CN217502127U - Quick driving device of hydraulic control valve and hydraulic operating mechanism - Google Patents

Abstract

The utility model relates to a quick drive arrangement and hydraulic pressure operating mechanism of hydraulic control valve, the quick drive arrangement of hydraulic control valve is equipped with the pull rod along the direction guide movement of fore-and-aft direction on the mount pad, and this pull rod is used for pushing forward the pilot valve case of hydraulic control valve in order to open the pilot valve, and quick drive arrangement still includes rubber buffer and reset spring; the pull rod is fixedly provided with an impact head which is used for impacting the rubber buffer piece when the pull rod moves forwards in place so as to buffer the impact of the pull rod on the valve core of the pilot valve; the return spring is used for applying backward return elastic force to the pull rod so as to force the pull rod to return to the corresponding initial position. The utility model provides a quick drive arrangement of hydraulic control valve has effectively solved reset spring's the great technical problem who influences the quick combined floodgate effect of hydraulic pressure operating mechanism easily of elasticity modulus.

Description

Quick driving device of hydraulic control valve and hydraulic operating mechanism

Technical Field

The utility model belongs to the technical field of hydraulic control valve, concretely relates to quick drive arrangement and hydraulic pressure operating mechanism of hydraulic control valve.

Background

The hydraulic operating mechanism is widely applied to a high-voltage circuit breaker, and in the hydraulic operating mechanism, a hydraulic control valve is a component for receiving and converting a control signal, which not only determines the opening and closing positions of the hydraulic operating mechanism, but also greatly influences the opening and closing speed of the hydraulic operating mechanism.

At present, a hydraulic control valve is often driven by an electromagnet and a repulsion mechanism together to open a pilot valve, for example, as shown in fig. 1, a circuit breaker, a hydraulic control valve and a hydraulic operating mechanism are provided in the chinese invention patent with application publication No. CN112443526A, the hydraulic control valve of the present invention includes a repulsion mechanism, the repulsion mechanism is used as a fast driving device of the hydraulic control valve, when the pilot valve is to be opened, an electromagnet coil 2 is electrified, a switch K is closed, a power supply capacitor C is electrified to a repulsion coil 5, a large current change generates a reverse induced current in the repulsion coil 4, a large repulsion force is generated between the repulsion coil 5 and the repulsion disk 4, the repulsion disk 4 is pushed to move towards the pilot valve, and the repulsion disk 4 pushes a movable iron core 1 to move to open the pilot valve. At the moment, the reset spring is in a compressed state under the pushing of the stop disc 6, when the repulsive force between the repulsive force coil 5 and the repulsive force disc 4 is removed, the electromagnetic coil 2 provides magnetic force to enable the movable iron core 1 to keep acting to push the pilot valve core to be opened, and in the process, the reset spring 3 stores elastic potential energy under the pushing of the stop disc 6 to rapidly drive the movable iron core 1 to reset when the reset is needed.

When the repulsion mechanism is actually used, the repulsion between the repulsion disc 4 and the repulsion coil 5 is large, in order to guarantee effective buffering, the reset spring 3 with large elastic modulus needs to be adopted to balance the impact force between the pull rod 1 and the pilot valve spool, but the reset spring 3 with large elastic modulus is adopted, so that the initial speed increase of the movable iron core 1 is slow when closing is caused, and the speed increase effect of the repulsion disc 4 can be reduced to influence the quick closing effect of the hydraulic operating mechanism.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quick drive arrangement of hydraulic control valve to solve among the prior art the technical problem that the elasticity modulus corresponding to repulsion dish and solenoid's reset spring is great influences hydraulic pressure operating mechanism's quick combined floodgate effect easily. And simultaneously, the utility model also provides an use the quick drive arrangement's of above-mentioned hydraulic control valve hydraulic pressure operating mechanism.

In order to achieve the above object, the present invention provides a quick driving device for a hydraulic control valve, which comprises:

the quick driving device of the hydraulic control valve comprises an installation seat, wherein a pull rod is assembled on the installation seat in a guiding and moving mode along the front-back direction, the pull rod is used for pushing a pilot valve core of the hydraulic control valve forwards to open a pilot valve, and the pull rod comprises a movable iron core or is the movable iron core; the mounting seat is also provided with an electromagnet coil for applying driving force to the movable iron core so as to drive the pull rod to move forwards from the initial position; the quick driving device further comprises a repulsion mechanism, the repulsion mechanism comprises a repulsion disc and a repulsion coil, and the repulsion disc is fixedly arranged on the pull rod and used for applying driving force to the pull rod to drive the pull rod to move forwards from an initial position; the quick driving device also comprises a rubber buffer and a return spring; the rubber buffer piece is arranged on the mounting seat or is fixedly arranged opposite to the mounting seat, an impact head is fixedly arranged on the pull rod, and the impact head is used for impacting the rubber buffer piece when the pull rod moves forwards so as to buffer the impact of the pull rod on the pilot valve spool; the return spring is used for applying backward return elastic force to the pull rod so as to force the pull rod to return to the corresponding initial position.

The beneficial effects are that: the utility model provides a quick drive arrangement of hydraulic control valve, under repulsion mechanism and electromagnet coil's drive, the pull rod moves forward fast, and striking head compression reset spring on the pull rod before the pilot valve case is pushed away in pull rod front end top, and striking head hits at the rubber bolster, has reduced the impact of pull rod to the pilot valve case greatly. Meanwhile, the return spring completes energy storage in compression, and after the pull rod completes work, the pull rod returns to a corresponding initial position under the elastic return acting force provided by the return spring. Although the reset spring plays a certain buffering role in the compression process, the rubber buffering piece plays a main buffering role, so that the spring with smaller elastic modulus can be selected when the reset spring is selected, the spring can provide reset elastic force for the pull rod, and therefore the pull rod is driven by the repulsion mechanism and the electromagnet coil to move forwards, the resistance provided by the reset pressure spring with small elastic modulus is also smaller, and the quick switching-on effect of the hydraulic control valve is better and remarkable.

As a further improvement, the rubber buffer piece is a buffer cylinder which is coaxially sleeved outside the pull rod at intervals.

The beneficial effects are that: the rubber buffer piece is a buffer cylinder, so that the rubber buffer piece is favorable for installation and improves the assembly efficiency.

As a further improvement, the buffer cylinder is positioned at the front side of the impact head, the rear end of the buffer cylinder is provided with a rear baffle for the impact head to directly impact, so that the impact head impacts the rubber buffer, and the rear baffle is assembled on the mounting seat along the front-rear direction in a guiding manner.

The beneficial effects are that: the rear end of the buffer cylinder is provided with the rear baffle, when the impact head impacts the buffer cylinder, the rear baffle and the impact head are directly impacted, the buffer cylinder is protected, and the service life of the equipment is prolonged.

As a further improvement, the rear baffle is installed on the installation seat in a guiding manner along the front-back direction through a guide rod, and one of the rear baffle and the installation seat is fixedly assembled with the guide rod, and the other one is slidably assembled with the guide rod in a guiding manner.

The beneficial effects are that: the back baffle passes through the guide bar and installs on the mount pad along the fore-and-aft direction, but the design makes relative slip between back baffle and the mount pad like this, and when striking head hit the buffer cylinder, the buffer cylinder takes place compression deformation back, and the back baffle can be along with buffer cylinder synchronous motion, guarantees the buffering effect.

As a further improvement, a rear side center hole is formed in the rear baffle, a rear convex ring is arranged at the hole edge of the rear side center hole, the rear convex ring is arranged in a protruding mode forwards and is in positioning insertion fit with the inner hole of the buffer cylinder, and then the rear convex ring is in positioning assembly with the buffer cylinder.

The beneficial effects are that: the rear baffle is provided with a rear convex ring, so that the buffer cylinder is positioned conveniently during installation, and the stability of the buffer cylinder is ensured.

As a further improvement, the rear side of the mounting seat is correspondingly provided with a front baffle, the front end of the buffer cylinder is in top press fit with the front baffle, the front baffle is provided with a front side center hole, a front convex ring is arranged at the hole edge of the front side center hole and is arranged in a protruding mode backwards and used for guiding, positioning and mounting a return spring.

The beneficial effects are that: the rear side correspondence of mount pad is equipped with preceding baffle, is equipped with preceding bulge loop on the preceding baffle, and the mount pad is equipped with preceding bulge loop for convenient processing with preceding baffle components of a whole that can function independently design, is for convenient installation reset spring on the preceding baffle, has the guide effect to reset spring when reset spring atress compression simultaneously.

As a further improvement, the reset spring is a reset pressure spring, the reset pressure spring is located in the buffer cylinder and sleeved outside the pull rod, the front end of the reset pressure spring is in pushing fit with the mounting seat, and the rear end of the reset pressure spring is in pushing fit with the impact head.

The beneficial effects are that: reset spring is the pressure spring that resets, makes things convenient for the suit outside the pull rod to arrange in the buffer cylinder, not only convenient equipment can also effectively avoid the pressure spring that resets to receive the influence.

As a further improvement, a front limiting plate and a rear limiting plate are arranged corresponding to the pull rod, the front limiting plate is positioned on the front side of the repulsion plate, and the front limiting plate is used for stopping, limiting and matching with the repulsion plate when the pull rod moves forwards to a proper position; the rear limiting plate is located on the rear side of the impact head and used for being matched with the stop limiting position of the impact head when the pull rod returns to the initial position backwards.

The beneficial effects are that: the design of the front limiting plate and the rear limiting plate can further limit the pull rod when the pull rod moves forwards in place or returns to the original position, so that the accuracy and the stability of the device are guaranteed.

As a further improvement, at least one of the front limiting plate and the rear limiting plate is a polytetrafluoroethylene plate.

The beneficial effects are that: the polytetrafluoroethylene sheet has excellent wear resistance and electrical insulation.

The utility model provides a hydraulic pressure operating mechanism's technical scheme is:

the hydraulic control mechanism comprises a hydraulic control valve, the hydraulic control valve comprises a pilot valve and a quick driving device, the pilot valve is provided with a pilot valve spool, and the quick driving device is used for pushing the pilot valve spool to move forwards so as to open the pilot valve; the quick driving device of the hydraulic control valve comprises an installation seat, wherein a pull rod is assembled on the installation seat in a guiding and moving mode along the front-back direction, the pull rod is used for pushing a pilot valve core of the hydraulic control valve forwards to open a pilot valve, and the pull rod comprises a movable iron core or is the movable iron core; the mounting seat is also provided with an electromagnet coil for applying driving force to the movable iron core so as to drive the pull rod to move forwards from the initial position; the quick driving device further comprises a repulsion mechanism, the repulsion mechanism comprises a repulsion disc and a repulsion coil, and the repulsion disc is fixedly arranged on the pull rod and used for applying driving force to the pull rod to drive the pull rod to move forwards from an initial position; the quick driving device also comprises a rubber buffer and a return spring; the rubber buffer piece is arranged on the mounting seat or is fixedly arranged opposite to the mounting seat, an impact head is fixedly arranged on the pull rod, and the impact head is used for impacting the rubber buffer piece when the pull rod moves forwards so as to buffer the impact of the pull rod on the pilot valve spool; the return spring is used for applying backward return elastic force to the pull rod so as to force the pull rod to return to the corresponding initial position.

The beneficial effects are that: the utility model provides a quick drive arrangement of hydraulic control valve, under repulsion mechanism and electromagnet coil's drive, the pull rod moves forward fast, and striking head compression reset spring on the pull rod before the pilot valve case is pushed away in pull rod front end top, and striking head hits at the rubber bolster, has reduced the impact of pull rod to the pilot valve case greatly. Meanwhile, the return spring completes energy storage in compression, and after the pull rod completes work, the pull rod returns to a corresponding initial position under the elastic return acting force provided by the return spring. Although the reset spring plays a certain buffering role in the compression process, the rubber buffering piece plays a main buffering role, so that the spring with smaller elastic modulus can be selected when the reset spring is selected, the spring can provide reset elastic force for the pull rod, and therefore the pull rod is driven by the repulsion mechanism and the electromagnet coil to move forwards, the resistance provided by the reset pressure spring with small elastic modulus is also smaller, and the quick switching-on effect of the hydraulic control valve is better and remarkable.

As a further improvement, the rubber buffer piece is a buffer cylinder which is coaxially sleeved outside the pull rod at intervals.

The beneficial effects are that: the rubber buffer piece is a buffer cylinder, so that the rubber buffer piece is favorable for installation and improves the assembly efficiency.

As a further improvement, the buffer cylinder is positioned at the front side of the impact head, a rear baffle is arranged at the rear end of the buffer cylinder and is directly impacted by the impact head, so that the impact head impacts the rubber buffer, and the rear baffle is assembled on the mounting seat along the front-rear direction in a guiding manner.

The beneficial effects are that: the rear end of the buffer cylinder is provided with the rear baffle, when the impact head impacts the buffer cylinder, the rear baffle and the impact head are directly impacted, the buffer cylinder is protected, and the service life of the equipment is prolonged.

As a further improvement, the rear baffle is installed on the installation seat in a guiding manner along the front and back direction through a guide rod, and one of the rear baffle and the installation seat is fixedly assembled with the guide rod, and the other one is slidably assembled with the guide rod in a guiding manner.

The beneficial effects are that: the back baffle passes through the guide bar and installs on the mount pad along the fore-and-aft direction, but the design makes relative slip between back baffle and the mount pad like this, and when striking head hit the buffer cylinder, the buffer cylinder takes place compression deformation back, and the back baffle can be along with buffer cylinder synchronous motion, guarantees the buffering effect.

As a further improvement, a rear side center hole is formed in the rear baffle, a rear convex ring is arranged at the hole edge of the rear side center hole, the rear convex ring is arranged in a protruding mode forwards and is in positioning insertion fit with the inner hole of the buffer cylinder, and then the rear convex ring is in positioning assembly with the buffer cylinder.

The beneficial effects are that: the rear baffle is provided with a rear convex ring, so that the buffer cylinder is positioned conveniently during installation, and the stability of the buffer cylinder is ensured.

As a further improvement, the rear side of the mounting seat is correspondingly provided with a front baffle, the front end of the buffer cylinder is in top press fit with the front baffle, the front baffle is provided with a front side center hole, a front convex ring is arranged at the hole edge of the front side center hole and is arranged in a protruding mode backwards and used for guiding, positioning and mounting a return spring.

The beneficial effects are that: the rear side correspondence of mount pad is equipped with preceding baffle, is equipped with preceding bulge loop on the preceding baffle, and the mount pad is equipped with preceding bulge loop for convenient processing with preceding baffle components of a whole that can function independently design on the preceding baffle, is for convenient installation reset spring, has the guide effect to reset spring when reset spring atress compression simultaneously.

As a further improvement, the reset spring is a reset pressure spring, the reset pressure spring is positioned in the buffer cylinder and sleeved outside the pull rod, the front end of the reset pressure spring is in pushing fit with the mounting seat, and the rear end of the reset pressure spring is in pushing fit with the impact head.

The beneficial effects are that: reset spring is the pressure spring that resets, makes things convenient for the suit outside the pull rod to arrange in the buffer cylinder, not only convenient equipment can also effectively avoid the pressure spring that resets to receive the influence.

As a further improvement, a front limiting plate and a rear limiting plate are arranged corresponding to the pull rod, the front limiting plate is positioned on the front side of the repulsion plate, and the front limiting plate is used for stopping, limiting and matching with the repulsion plate when the pull rod moves forwards to a proper position; the rear limiting plate is located on the rear side of the impact head and used for being matched with the stop limiting position of the impact head when the pull rod returns to the initial position backwards.

The beneficial effects are that: the design of the front limiting plate and the rear limiting plate can further limit the pull rod when the pull rod moves forwards in place or returns to the original position, so that the accuracy and the stability of the device are guaranteed.

As a further improvement, at least one of the front limiting plate and the rear limiting plate is a polytetrafluoroethylene plate.

The beneficial effects are that: the polytetrafluoroethylene plate has excellent wear resistance and electrical insulation.

Drawings

FIG. 1 is a schematic diagram of a prior art quick drive for a hydraulic control valve;

fig. 2 is a schematic structural diagram of a quick driving device of a hydraulic control valve provided in this embodiment;

fig. 3 is a schematic structural view of the quick drive apparatus of fig. 2 mounted on a hydraulic actuator.

Description of reference numerals:

in fig. 1: 1. a movable iron core; 2. an electromagnet coil; 3. a return spring; 4. a repulsive force plate; 5. a repulsion coil; 6. and a stopping disc.

In fig. 2 to 3: 1. a movable iron core; 2. an electromagnet coil; 3. a front mounting base; 31. a front limiting plate; 4. a repulsive force plate; 5. a repulsion coil; 6. a base; 7. a guide seat; 71. a guide hole; 8. a front baffle; 81. a front convex ring; 82. a guide rod; 9. a tailgate; 91. a rear convex ring; 10. a buffer cylinder; 11. resetting the pressure spring; 12. a striking head; 13. a rear limiting plate; 14. a pilot valve; 15. a hydraulic control valve; 16. a pilot valve spool; 17. a hydraulic mechanism main body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model provides a hydraulic pressure operating mechanism's embodiment 1:

as shown in fig. 2 and fig. 3, the hydraulic operating mechanism provided in the present embodiment includes a hydraulic control valve 15, the hydraulic control valve 15 includes a pilot valve 14 and a quick driving device, the pilot valve 14 has a pilot valve spool 16, and the quick driving device is used for driving a pull rod to push the pilot valve spool 16 to move forward, so as to open the pilot valve 14. The quick driving device is provided with a rubber buffer piece and a return spring. In the quick driving device of this embodiment, the return spring is mainly used to apply a backward return elastic acting force to the pull rod, and the buffer between the pull rod and the pilot valve spool 16 is mainly provided by a rubber buffer, so as to avoid using a return spring with a large elastic modulus, and solve the technical problem that the large elastic modulus of the return spring affects the quick switching-on effect of the hydraulic operating mechanism in the prior art.

Specifically, as shown in fig. 2, the quick drive device is provided with a mounting base including a guide base 7, the guide base 7 is provided with a guide hole 71, a pull rod is slidably fitted in the guide hole 71 in the front-rear direction, the pull rod is a plunger 1, and when the plunger 1 moves forward, the plunger pushes a pilot valve spool 16 of a hydraulic control valve 15 to open a pilot valve 14. The driving mechanism of the movable iron core 1 comprises a repulsion mechanism and an electromagnet coil 2, the repulsion mechanism comprises a repulsion disc 4 and a repulsion coil 5, and the driving mechanism is used for driving the movable iron core 1 to move forwards from a corresponding initial position so as to push against a pilot valve core 16 of a hydraulic control valve 15.

In this embodiment, the rear end of the movable iron core 1 is provided with the striking head 12, a return spring is arranged between the striking head 12 and the guide seat 7, the return spring adopts a return pressure spring 11, the return pressure spring 11 compresses and stores force under the extrusion of the striking head 12 and the guide seat 7 in the process that the movable iron core 1 moves forward from the initial position, and when the movable iron core 1 needs to return to the corresponding initial position after completing the work, the return pressure spring 11 applies backward return elastic acting force to the movable iron core 1, so that the movable iron core 1 can return to the corresponding initial position.

In this embodiment, a front baffle 8 is correspondingly disposed on the rear side of the guide seat 7, a front center hole is disposed on the front baffle 8, the front center hole has the same radial size as the guide hole 71 and coaxially corresponds to the guide hole, a front protruding ring 81 is disposed along the hole edge of the front center hole, the front protruding ring 81 protrudes rearward, the reset compression spring 11 is sleeved on the movable iron core 1 during installation, so that the rear end of the reset compression spring 11 is installed in the installation position of the impact head 12, then the movable iron core 1 penetrates through the guide hole 71 on the installation seat, so that the front end of the reset compression spring 11 is sleeved on the front protruding ring 81 in a guiding and positioning manner, at this time, the front end of the reset compression spring 11 forms a pushing fit with the front baffle 8, and the rear end of the reset compression spring 11 forms a pushing fit with the impact head 12.

In this embodiment, for buffering the impact that movable iron core 1 caused to pilot valve case 16, be equipped with the rubber bolster between impact head 12 and the guide holder 7, the rubber bolster is buffer cylinder 10, buffer cylinder 10 is coaxially the interval suit in the outside of movable iron core 1 and pressure spring 11 that resets, for the location installation to buffer cylinder 10, the rear end of buffer cylinder 10 is equipped with backplate 9, still be equipped with the rear side centre bore on the backplate, the hole edge department of rear side centre bore is equipped with back bulge loop 91, back bulge loop 91 is protruding to arrange forward, insert the hole location of buffer cylinder 10 on back bulge loop 91. The backplate 9 is installed on the mount pad through guide bar 82 along the fore-and-aft direction, specifically be fixed being equipped with guide bar 82 on the preceding baffle 8 of guide pad 7, guide bar 82 extends along the fore-and-aft direction, backplate 9 is passed to the rear end of guide bar 82, the front end of guide bar 82 is equipped with the screw thread of appointed design length, guide bar 82 carries out fixed mounting through threaded connection and guide pad, thereby make the front end of buffer cylinder 10 push away the contact with preceding baffle 8, the rear end of buffer cylinder 10 pushes away the contact with backplate 9, it is different according to actual demand operating mode, the accessible is adjusted the degree of depth that screw thread precession guide pad 7 on guide bar 82 and is adjusted the precompression volume of buffer cylinder 10. When the impact head 12 directly impacts the tailgate 9, the cushion cylinder 10 is further compressed and deformed by the impact of the impact head 12, and the tailgate 9 presses the cushion cylinder 10 forward along the guide rod 82. When the movable iron core 1 returns to the corresponding initial position, the buffer cylinder 10 is restored to the original state by the elasticity of the buffer cylinder, and at the moment, the buffer cylinder 10 pushes the rear baffle 9 backwards, so that the rear baffle 9 moves backwards.

It should be particularly emphasized that, in the present embodiment, when the plunger 1 moves forward from the initial position to the position to push against the pilot valve spool 16 of the hydraulic control valve 15, the return pressure spring 11 may play a certain role in buffering when being compressed to store energy, but when the impact head 12 directly impacts the tailgate 9, the buffer cylinder 10 plays a main role in buffering, and at this time, the compressed energy storage of the return pressure spring 11 only applies a backward return elastic acting force to the plunger 1.

In this embodiment, the mounting base further includes a base 6, and the base 6 is located on the front side of the guide base 7. The repulsion disc 4 is fixedly arranged on the movable iron core 1 and is positioned on the front side of the base 6. The repulsion coil 5 is correspondingly arranged with the repulsion plate 4, the repulsion coil 5 is arranged on the base 6, and meanwhile, a power supply circuit is also arranged on the base 6 and used for supplying power to the repulsion coil 5. The supply line comprises a capacitor C and a switch S. In addition, the movable iron core 1 is circumferentially provided with an electromagnet coil 2, and the electromagnet coil 2 is arranged in front of the repulsion plate 4.

In this embodiment, a front limiting plate 31 and a rear limiting plate 13 are arranged corresponding to the movable iron core 1, the front limiting plate 31 and the rear limiting plate 13 are both made of teflon, the front limiting plate 31 is fixedly mounted on the front mounting base 3 and located on the front side of the repulsion disk 4, the front mounting base 3 is fixedly mounted on the front side of the guide base 7 through a connecting rod, and the front limiting plate 31 is used for being stopped and limited by the repulsion disk 4 when the movable iron core 1 moves forward to a proper position. The rear limiting plate 13 is fixed on the guide seat 7 and located at the rear side of the impact head 12, and the rear limiting plate 13 is used for being matched with the impact head 12 in a stopping and limiting manner when the movable iron core 1 returns to the initial position backwards. It should be noted that, when the movable iron core 1 moves forward to the designed distance value, the movable iron core 1 is in pushing contact with the pilot valve spool 16.

In this embodiment, the pilot valve 14 is installed on a hydraulic mechanism main body 17 of a hydraulic operation structure, when the pilot valve 14 needs to be opened, the electromagnet coil 2 is energized, the switch S is opened at the same time, the capacitor C charges the repulsion coil 5, the electromagnet coil 2 generates a forward magnetic force on the moving iron core 1, meanwhile, a pulse current is generated in the repulsion coil 5, the pulse current generates an alternating magnetic field around the repulsion coil 5, the alternating magnetic field generates a reverse induced eddy current on the repulsion coil 4, the repulsion coil 4 and the repulsion coil 5 interact to generate a repulsion force, the moving iron core 1 moves forward from an initial position under the driving of the electromagnet coil 2 and the repulsion coil 4, the front end of the moving iron core 1 pushes against the pilot valve core 16, when the moving iron core 1 moves in place, the pilot valve 14 is opened, in this process, the impact head 12 compresses the reset compression spring 11 to directly impact the back baffle 9, the repulsion plate 4 moves forward to be matched with the front limiting plate 31 in a stopping and limiting way.

In this embodiment, the pilot valve spool 16 is required to be kept in an open state during the opening of the main valve spool of the hydraulic control valve 15, but due to the characteristics of the repulsive force mechanism itself, the repulsive force is rapidly attenuated after the occurrence of the repulsive force. At this time, only the electromagnet coil 2 keeps acting on the movable iron core 1, so that the pilot valve spool 16 keeps an opening state. When the pilot valve 14 needs to be closed, the electromagnet coil 2 and the repulsion coil 5 are powered off at the same time, the reset pressure spring 11 provides backward reset elastic acting force for the movable iron core 1, the movable iron core 1 moves backward to a corresponding initial position, and at the moment, the impact head 12 and the rear baffle 9 are pushed to be in limit fit.

The utility model provides a hydraulic pressure operating mechanism includes quick drive arrangement, and the last correspondence of quick drive arrangement is equipped with rubber buffer and pressure spring 11 that resets, when opening pilot valve 14, strikes head 12 forward movement striking buffer cylinder 10 under the drive of moving iron core 1, can cushion and move the impact that iron core 1 caused to pilot valve case 16. When the pilot valve 14 is closed, the return compression spring 11 is used for applying backward return elastic force to the pull rod to force the pull rod to return to the corresponding initial position. In this hydraulic pressure operating mechanism, buffer cylinder 10 plays the effect of main buffering impact, when selecting for use the pressure spring 11 that resets, can select the pressure spring 11 that resets that the elastic modulus is less, guarantee that the pressure spring 11 that resets can provide the elastic force that resets to effectively solve the great technical problem who influences the quick closing effect of hydraulic pressure operating mechanism of the elastic modulus of position spring.

The utility model provides a hydraulic pressure operating mechanism's embodiment 2:

the difference from example 1 is mainly that: in example 1, the tie rod is a movable iron core. In this embodiment, the pull rod includes movable iron core and helping hand pole, and movable iron core and the coaxial arrangement of helping hand pole and be located the place ahead of helping hand pole, and fixed mounting has the repulsion dish on the helping hand pole, and the repulsion dish corresponds and is equipped with the repulsion coil, and movable iron core circumference has around electromagnet coil, and when the pilot valve was opened to needs, repulsion coil and electromagnet coil switched on simultaneously, and the repulsion dish drives helping hand pole top and pushes away movable iron core and move forward to push away movable iron core and move forward fast.

The utility model provides a hydraulic pressure operating mechanism's embodiment 3:

the difference from example 1 is mainly that: in example 1, the rubber cushion is a cushion cylinder which is coaxially fitted around the outside of the tie rod at intervals. In this embodiment, the rubber bolster is a plurality of buffering posts, and buffering post and pull rod parallel arrangement, location installation in the front between baffle and the backplate, and the same can cushion the impact that movable core caused the pilot valve case, and the central point department of each buffering post all leads and is equipped with corresponding guide bar, also can set up the recess on the side in opposite directions of front and back baffle to the buffering post is placed in the location.

The utility model provides a hydraulic pressure operating mechanism's embodiment 4:

the difference from example 1 is mainly that: in embodiment 1, the impact head is located at the rear end of the plunger. In this embodiment, the striking head is located the middle part of movable iron core, and is located the front side of repulsion dish, correspondingly, rubber buffer fixed mounting on corresponding installed part, the installed part can with mount pad fixed mounting, perhaps the installed part is independently separately arranged with the mount pad, the installed part is relatively fixed with the mount pad for the rubber spare is arranged in the front between limiting plate and the striking head.

The utility model provides a hydraulic pressure operating mechanism's embodiment 5:

the difference from example 1 is mainly that: in embodiment 1, a front baffle is provided on the rear side of the guide shoe. In this embodiment, the rear side of guide holder does not be equipped with preceding baffle, and the rear end hole of guiding hole has arranged preceding bulge loop along the backward extension of department, and the front end and the guide holder fixed assembly of guide bar.

The utility model provides a hydraulic pressure operating mechanism's embodiment 6:

the difference from example 1 is mainly that: in embodiment 1, the return compression spring is a return compression spring. In this embodiment, the pressure spring that resets is the extension spring that resets, and the one end and the striking head of extension spring that resets are connected, and the other end is connected with back limiting plate.

The utility model provides a hydraulic pressure operating mechanism's embodiment 7:

the difference from example 1 is mainly that: in example 1, both the front stopper plate and the rear stopper plate are made of polytetrafluoroethylene. In this embodiment, only one of the front and rear limiting plates is a teflon plate.

The utility model provides a quick drive arrangement's of hydraulic control valve embodiment:

the structure of the quick driving device of the hydraulic control valve in this embodiment is the same as that of the quick driving device of the hydraulic control valve in the hydraulic operating mechanism, and details are not described herein again.

In other embodiments, the structure of the quick driving device of the hydraulic control valve may also adopt the structure in any one of embodiments 2 to 7 of the hydraulic operating mechanism, and will not be described herein again.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made without inventive effort to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A quick driving device of a hydraulic control valve comprises an installation seat, wherein a pull rod is arranged on the installation seat in a guiding and moving mode along the front-back direction, the pull rod is used for pushing a pilot valve spool (16) of the hydraulic control valve (15) forwards to open a pilot valve (14), and the pull rod comprises a movable iron core (1) or is the movable iron core (1); the mounting seat is also provided with an electromagnet coil (2) for applying driving force to the movable iron core (1) so as to drive the pull rod to move forwards from the initial position; the quick driving device further comprises a repulsion mechanism, the repulsion mechanism comprises a repulsion disc (4) and a repulsion coil (5), and the repulsion disc (4) is fixedly mounted on the pull rod and used for applying driving force to the pull rod to drive the pull rod to move forwards from an initial position; the quick driving device is characterized by also comprising a rubber buffer and a return spring (11); the rubber buffer piece is arranged on the mounting seat or is fixedly arranged opposite to the mounting seat, an impact head (12) is fixedly arranged on the pull rod, and the impact head (12) is used for impacting the rubber buffer piece when the pull rod moves forwards so as to buffer the impact of the pull rod on the pilot valve spool (16); the return spring (11) is used for applying backward return elastic force to the pull rod to force the pull rod to return to the corresponding initial position.

2. The quick drive of a hydraulic control valve according to claim 1, characterized in that the rubber buffer is a buffer cylinder (10), and the buffer cylinder (10) is coaxially fitted around the outside of the tension rod at intervals.

3. The quick driving device of the hydraulic control valve according to claim 2, characterized in that the buffer cylinder (10) is located at the front side of the impact head (12), the rear end of the buffer cylinder (10) is provided with a rear baffle (9) for the impact head (12) to directly impact, so that the impact head (12) impacts the rubber buffer, and the rear baffle (9) is assembled on the mounting seat in a guiding manner along the front-rear direction.

4. The quick drive device of a hydraulic control valve according to claim 3, characterized in that the tailgate (9) is installed on the mount base by a guide rod (82) in a front-rear direction guide, and one of the tailgate (9) and the mount base is fixedly fitted with the guide rod (82) and the other is slidably fitted with the guide rod (82).

5. The quick driving device of the hydraulic control valve according to claim 4, characterized in that the rear baffle (9) is provided with a rear central hole, a rear convex ring (91) is arranged at the hole edge of the rear central hole, and the rear convex ring (91) is arranged in a forward protruding manner, positioned and inserted with the inner hole of the buffer cylinder (10) and further positioned and assembled with the buffer cylinder (10).

6. The quick driving device of the hydraulic control valve according to claim 4, characterized in that a front baffle (8) is correspondingly arranged on the rear side of the mounting seat, the front end of the buffer cylinder (10) is in press fit with the front baffle (8), a front center hole is arranged on the front baffle (8), a front convex ring (81) is arranged at the hole edge of the front center hole, and the front convex ring (81) is arranged in a protruding manner backwards and used for guiding, positioning and mounting the return spring (11).

7. The quick driving device of the hydraulic control valve according to any one of claims 2 to 6, wherein the return spring (11) is a return compression spring, the return compression spring is located in the buffer cylinder (10) and sleeved outside the pull rod, the front end of the return compression spring is in pushing fit with the mounting seat, and the rear end of the return compression spring is in pushing fit with the impact head (12).

8. The quick driving device of the hydraulic control valve according to any one of claims 1 to 6, characterized in that a front limiting plate (31) and a rear limiting plate (13) are arranged corresponding to the pull rod, the front limiting plate (31) is arranged at the front side of the repulsive disc (4), and the front limiting plate (31) is used for being in stop limiting fit with the repulsive disc (4) when the pull rod moves forwards to a certain position; the rear limiting plate (13) is located on the rear side of the impact head (12), and the rear limiting plate (13) is used for being matched with the impact head (12) in a stopping and limiting mode when the pull rod is restored to the initial position backwards.

9. The quick drive of hydraulic control valves according to claim 8, characterized in that at least one of the front limiting plate (31) and the rear limiting plate (13) is a teflon plate.

10. A hydraulic operating mechanism comprises a hydraulic control valve (15), wherein the hydraulic control valve (15) comprises a pilot valve (14) and a quick driving device, the pilot valve (14) is provided with a pilot valve spool (16), and the quick driving device is used for pushing the pilot valve spool (16) to move forwards so as to open the pilot valve (14); characterized in that the quick drive device adopts the quick drive device of the hydraulic control valve of any one of claims 1 to 9.

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