CN112727844A

CN112727844A - Hydraulic cylinder capable of preventing jamming from smoothly running

Info

Publication number: CN112727844A
Application number: CN202011613884.XA
Authority: CN
Inventors: 宋丙臣
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-30

Abstract

The invention relates to a hydraulic cylinder capable of preventing clamping stagnation from smoothly running, which comprises a cylinder bottom, a one-way valve, a flange, a Glan sealing ring, a Y-shaped sealing ring, a buffer sleeve, a cylinder barrel, a piston rod, an O-shaped sealing ring, a buffer exhaust valve, a guide sleeve, a cylinder cover, a St sealing ring, a dustproof ring, a cylinder head, a piston, a guard ring, a buffer sleeve, a screw hole and a screw. The hydraulic cylinder of the invention has no clamping stagnation during operation, relatively stable operation during use and no creeping defect.

Description

Hydraulic cylinder capable of preventing jamming from smoothly running

Technical Field

The invention relates to the technical field of hydraulic pressure, in particular to a hydraulic cylinder capable of preventing jamming from smoothly running.

Background

The hydraulic cylinder is an actuating element in a hydraulic transmission system and is an energy conversion device for converting hydraulic energy into mechanical energy. The hydraulic motor performs a continuous rotary motion, while the hydraulic cylinder performs a reciprocating motion. The hydraulic cylinder has three types, namely a piston cylinder, a plunger cylinder and a swing cylinder, wherein the piston cylinder and the plunger cylinder realize reciprocating linear motion and output speed and thrust, and the swing cylinder realizes reciprocating swing and outputs angular speed (rotating speed) and torque. The hydraulic cylinder may be used in combination of two or more or in combination with other mechanisms, in addition to being used singly. To accomplish a particular function. The hydraulic cylinder has various structural forms, and the classification method thereof also has various types: the motion mode can be divided into a linear reciprocating motion type and a rotary swinging type; the hydraulic pressure can be divided into a single-acting type and a double-acting type according to the action condition of the hydraulic pressure; according to the structural form, the device can be divided into a piston type, a plunger type, a multi-stage telescopic sleeve type, a rack and pinion type and the like; the device can be divided into a pull rod, an earring, a bottom foot, a hinge shaft and the like according to the installation form; the pressing force grades can be 16MPa, 25MPa, 31.5MPa and the like. A hydraulic cylinder is an actuator in a hydraulic system that converts hydraulic energy into mechanical energy. The faults can be basically summarized into hydraulic cylinder misoperation, no force pushing load, piston sliding or crawling and the like. Since the hydraulic cylinder is out of order and the equipment is stopped, it is often necessary to pay attention to the failure diagnosis and use maintenance work of the hydraulic cylinder. Therefore, the hydraulic cylinder capable of preventing the jamming from smoothly running is provided.

Disclosure of Invention

The invention aims to provide a hydraulic cylinder capable of preventing jamming from smoothly running so as to solve the problems of misoperation, incapability of pushing a load, piston slippage or crawling and the like of the hydraulic cylinder in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme that the hydraulic cylinder capable of preventing the smooth operation caused by clamping stagnation comprises a cylinder bottom, a one-way valve, a flange, a Glan sealing ring, a Y-shaped sealing ring, a buffer sleeve, a cylinder barrel, a piston rod, an O-shaped sealing ring, a buffer exhaust valve, a guide sleeve, a cylinder cover, a St sealing ring, a dustproof ring, a cylinder head, a piston, a guard ring, a buffer sleeve, a screw hole and a screw, wherein a communication hole is formed in the upper end of the cylinder bottom, the one-way valve is arranged inside the communication hole, the communication hole is connected with the one-way valve through threads, a first hydraulic cavity is arranged inside the cylinder bottom and is communicated with the first hydraulic cavity, a first oil port is further formed in the cylinder bottom, the buffer sleeve is arranged inside the first hydraulic cavity, the piston is arranged at the right end of the buffer sleeve, one end of the, The cylinder barrel is sleeved between the inner side between the cylinder bottom and the cylinder head, the piston and the buffer sleeve are arranged inside the cylinder barrel, the cylinder head is provided with an exhaust valve mounting hole, the inner thread of the mounting hole is provided with a buffer exhaust valve, the cylinder bottom is provided with a first inclined hole, the first inclined hole is communicated with the space where the left end face of the piston is located, the cylinder bottom and the cylinder head are opposite to each other and are located on the outer portion of the cylinder barrel, the cylinder bottom and the cylinder head are both provided with screw holes, screws are respectively arranged inside the screw holes, the screw head is in threaded connection with a flange, the cylinder head is further provided with a second oil port, the cylinder head is provided with a second inclined hole, the second inclined hole is communicated with the space where the right end face of the piston is located, the right end of the cylinder head is provided with a guide sleeve, and the guide sleeve and the cylinder cover are sleeved outside the piston rod, and a cylinder cover is also arranged at the right end of the cylinder head.

Preferably, the check valve comprises a valve body, an adjusting screw rod, a spring and a steel ball, the center of the valve body is in threaded connection with the adjusting screw rod, the upper end of the adjusting screw rod is a straight flat-head screw, the center of the valve body is a through hole, the spring is arranged in the through hole, the steel ball is arranged in the through hole, and the steel ball is abutted to the spring.

Preferably, the communication hole and the first oil port are arranged on the same straight line.

Preferably, an O-shaped ring groove is formed in the right end of the cylinder bottom, and a first O-shaped ring is arranged inside the O-shaped ring groove.

Preferably, the buffering exhaust valve comprises an exhaust valve body, the middle of the exhaust valve body is of a through structure and is in threaded connection with an exhaust valve core, the upper end of the exhaust valve core is in threaded connection with an adjusting nut, the lower end of the exhaust valve core is a conical surface, the cylinder head is provided with an exhaust small hole, and the conical surface at the lower end of the exhaust valve core is in linear contact with the exhaust small hole.

Preferably, the outside of cushion collar is provided with glan sealing washer, Y type sealing washer, two of Y type sealing washers set up the both sides at the piston.

Preferably, a stet sealing ring and a dustproof ring are arranged inside the position where the cylinder cover is in contact with the piston rod, and the dustproof ring is arranged on the right side of the stet sealing ring.

Preferably, a cylindrical pin for positioning is radially arranged at the position where the buffer sleeve is in threaded connection with the piston rod.

Compared with the prior art, the invention has the following beneficial effects:

1. this prevent smooth pneumatic cylinder of jamming operation is provided with the intercommunicating pore through the upper end at the cylinder bottom, and the intercommunicating pore is inside to be provided with the check valve, and the intercommunicating pore passes through threaded connection with the check valve, and the check valve includes valve body, adjusting screw, spring, steel ball, and the central threaded connection adjusting screw of valve body, adjusting screw upper end are a word crew cut screw, and the valve body center is the perforating hole, is provided with the spring in the perforating hole, and the inside of intercommunicating pore sets up the steel ball, and the steel ball offsets with. The structure is a one-way valve structure, and is used for opening the one-way valve under certain pressure, acting on the left side of the piston rod together with the first hydraulic cavity, and closing the one-way valve when the pressure is low, so that the impact on the piston rod can be prevented, and the stability of the operation of the piston rod is ensured;

2. this prevent smooth pneumatic cylinder of jamming operation, through be provided with the discharge valve mounting hole on the jar head, buffering discharge valve is installed to the internal thread of mounting hole, be provided with first inclined hole on the cylinder bottom, the space intercommunication at the left end face position place of first inclined hole and piston, be provided with the second inclined hole on the jar head, the space intercommunication at the right-hand member face position place of second inclined hole and piston, the setting of this structure can arrange inside gas through discharge valve in logical oil, the inside bubble that exists of prevention.

3. The hydraulic cylinder capable of preventing clamping stagnation and running smoothly is provided with the screw holes which are respectively provided with the screws inside and are connected with the flange in a threaded manner at the head part of the screw through the flange sleeved outside the cylinder barrel on one side opposite to the cylinder bottom and the cylinder head.

Drawings

FIG. 1 is a schematic structural diagram of a fluid cylinder of the present invention for preventing smooth operation of jamming;

FIG. 2 is a schematic structural view of a check valve of a hydraulic cylinder for preventing smooth operation due to jamming according to the present invention;

FIG. 3 is a schematic view of a bottom structure of a hydraulic cylinder for preventing smooth operation due to clamping stagnation according to the present invention;

fig. 4 is a partial assembly view of a fluid cylinder of the present invention for preventing smooth operation due to sticking.

In the figure: the cylinder bottom comprises a cylinder bottom 1, a one-way valve 2, a flange 3, a Glan sealing ring 4, a Y-shaped sealing ring 5, a buffer sleeve 6, a cylinder barrel 7, a piston rod 8, an O-shaped sealing ring 9, a buffer exhaust valve 10, a guide sleeve 11, a cylinder cover 12, a St sealing ring 13, a dust ring 14, a cylinder head 15, a piston 16, a buffer sleeve 18, a cylindrical pin 19, a screw hole 20, a screw 21, a first O-shaped ring 22, an installation hole 23, an exhaust valve body 24, an exhaust valve core 25, an adjusting nut 26, a second inclined hole 27, a second oil port 17, a valve body 201, an adjusting screw 202, a spring 203, a steel ball 204, a communication hole 101, a first oil port 103, a first hydraulic cavity 104, a first inclined hole 105 and an O.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the hydraulic cylinder for preventing jamming from running smoothly in the technical scheme provided by the invention comprises a cylinder bottom 1, a one-way valve 2, a flange 3, a glan sealing ring 4, a Y-shaped sealing ring 5, a buffer sleeve 6, a cylinder barrel 7, a piston rod 8, an O-shaped sealing ring 9, a buffer exhaust valve 10, a guide sleeve 11, a cylinder cover 12, a stet sealing ring 13, a dust ring 14, a cylinder head 15, a piston 16, a buffer sleeve 18, a screw hole 20 and a screw 21, wherein a communication hole 101 is formed in the upper end of the cylinder bottom 1, the one-way valve 2 is arranged in the communication hole 101, the communication hole 101 is in threaded connection with the one-way valve 2, a first hydraulic cavity 104 is formed in the cylinder bottom 1, the communication hole 101 is communicated with the first hydraulic cavity 104, a first oil port 103 is further formed in the cylinder bottom 1, the buffer sleeve 18 is arranged in the first hydraulic cavity 104, and a piston 16 is arranged, the center of the buffer sleeve 18 is connected with one end of a piston rod 8 through a thread, the piston rod 8 sequentially penetrates through a piston 16, a buffer sleeve 6 and a cylinder head 15, the cylinder barrel 7 is sleeved between the inner sides of the middle of a cylinder bottom 1 and the cylinder head 15, the piston 16 and the buffer sleeve 6 are arranged inside the cylinder barrel 7, an exhaust valve mounting hole 23 is formed in the cylinder head 15, a buffer exhaust valve 10 is installed on the inner thread of the mounting hole 23, a first inclined hole 105 is formed in the cylinder bottom 1, the first inclined hole 105 is communicated with the space where the left end face of the piston 16 is located, a flange 3 is sleeved on one side, opposite to the cylinder bottom 1 and the cylinder head 15, of the cylinder bottom 7, screw holes 20 are formed in the cylinder bottom 1 and the cylinder head 15, screws 21 are installed inside the screw holes 20, the heads of the screws 21 are connected with the flange 3 through threads, and a second oil port 17 is further formed in the cylinder head 15, the cylinder head 15 is provided with a second inclined hole 27, the second inclined hole 27 is communicated with a space where the right end face of the piston 16 is located, the guide sleeve 11 is installed at the right end of the cylinder head 15, the guide sleeve 11 and the cylinder cover 12 are sleeved on the outer portion of the piston rod 8, and the cylinder cover 12 is further installed at the right end of the cylinder head 15.

Further, the check valve 2 comprises a valve body 201, an adjusting screw 202, a spring 203 and a steel ball 204, the center of the valve body 201 is in threaded connection with the adjusting screw 202, the upper end of the adjusting screw 202 is a straight flat head screw, the center of the valve body 201 is a through hole, the spring 203 is arranged in the through hole, the steel ball 204 is arranged in the through hole 101, and the steel ball 204 abuts against the spring 203.

Further, the communication hole 101 and the first port 103 are disposed on the same straight line. This structure can reduce the spatial arrangement volume of the cylinder bottom 1.

Further, an O-ring groove 102 is provided at the right end of the cylinder bottom 1, and a first O-ring 22 is provided inside the O-ring groove 102. The first O-ring 22 is used to prevent oil leakage at the connection.

Further, the buffer exhaust valve 10 comprises an exhaust valve body 24, the middle of the exhaust valve body 24 is a through structure and is in threaded connection with an exhaust valve core 25, the upper end of the exhaust valve core 25 is in threaded connection with an adjusting nut 26, the lower end of the exhaust valve core 25 is a conical surface, the cylinder head 15 is provided with an exhaust small hole, and the conical surface at the lower end of the exhaust valve core 25 is in linear contact with the exhaust small hole.

Furthermore, a Glan sealing ring 4 and a Y-shaped sealing ring 5 are arranged outside the buffer sleeve 6, and the two Y-shaped sealing rings 5 are arranged on two sides of the piston 16.

Furthermore, a stet seal ring 13 and a dust ring 14 are arranged inside the position where the cylinder cover 12 contacts with the piston rod 8, and the dust ring 14 is arranged on the right side of the stet seal ring 13.

Further, a cylindrical pin 19 for positioning is radially arranged at the position where the buffer sleeve 18 is screwed with the piston rod 8. The piston rod 8 can be prevented from being disengaged from the cushion sleeve 18.

Example (b):

when the device is used, the first oil port 103 and the second oil port 17 are both connected with an oil pipe, hydraulic oil is conveyed to the oil pipe to push the piston 16 to move, the pressure at the first hydraulic cavity 104 rises to a certain pressure to firstly push the steel ball 204 to move upwards, the check valve 2 is opened, the hydraulic oil enters the left end of the piston 16 through the first inclined hole 105 and acts on the pressure oil together with the left end surface of the piston rod 8 to push the piston 16 to move together, because the one-way valve 2 starts to move at a large flow rate when the pressure is increased, the piston rod 8 can stably extend without clamping stagnation, the running speed is uniform, the movement is accurate, a part of hydraulic oil can be discharged when the buffering exhaust valve 10 arranged on the cylinder head 15 is installed, the air in the hydraulic cylinder can be exhausted completely, the exhaust valve core 25 is rotated downwards after the air is exhausted, and then the adjusting nut 26 is locked. The hydraulic cylinder of the invention has no clamping stagnation during operation, relatively stable operation during use and no creeping defect.

It is noted that, herein, 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hydraulic cylinder capable of preventing clamping stagnation and smooth operation comprises a cylinder bottom (1), a one-way valve (2), a flange (3), a buffer sleeve (6), a cylinder barrel (7), a piston rod (8), a buffer exhaust valve (10), a guide sleeve (11), a cylinder cover (12), a cylinder head (15), a piston (16), a buffer sleeve (18), a screw hole (20) and a screw (21), and is characterized in that a communication hole (101) is formed in the upper end of the cylinder bottom (1), the one-way valve (2) is arranged inside the communication hole (101), the communication hole (101) is in threaded connection with the one-way valve (2), a first hydraulic cavity (104) is arranged inside the cylinder bottom (1), the communication hole (101) is communicated with the first hydraulic cavity (104), a first oil port (103) is further arranged on the cylinder bottom (1), the buffer sleeve (18) is arranged inside the first hydraulic cavity (104), a piston (16) is arranged at the right end of the buffer sleeve (18), one end of a piston rod (8) is connected to the center of the buffer sleeve (18) in a threaded manner, the piston rod (8) sequentially penetrates through the piston (16), the buffer sleeve (6) and the cylinder head (15), the cylinder barrel (7) is sleeved between the inner sides of the middle of the cylinder bottom (1) and the cylinder head (15), the piston (16) and the buffer sleeve (6) are arranged inside the cylinder barrel (7), an exhaust valve mounting hole (23) is formed in the cylinder head (15), a buffer exhaust valve (10) is installed on the inner thread of the mounting hole (23), a first inclined hole (105) is formed in the cylinder bottom (1), the first inclined hole (105) is communicated with the space where the left end face of the piston (16) is located, a flange (3) is sleeved outside the cylinder barrel (7) and on one side, opposite to the cylinder head (15), all be provided with screw hole (20) on cylinder bottom (1) and cylinder head (15), screw (21) are all installed to the equal inside of screw hole (20), screw (21) head threaded connection flange (3), still be provided with second hydraulic fluid port (17) on cylinder head (15), be provided with second inclined hole (27) on cylinder head (15), the space intercommunication at the right-hand member face position place of second inclined hole (27) and piston (16), uide bushing (11) is installed to cylinder head (15) right-hand member, uide bushing (11), cylinder cap (12) cover are established in the outside of piston rod (8), cylinder head (15) right-hand member still installs cylinder cap (12).

2. The hydraulic cylinder capable of preventing clamping stagnation from smoothly running is characterized in that the one-way valve (2) comprises a valve body (201), an adjusting screw rod (202), a spring (203) and a steel ball (204), the center of the valve body (201) is in threaded connection with the adjusting screw rod (202), the upper end of the adjusting screw rod (202) is a straight flat head screw, the center of the valve body (201) is a through hole, the spring (203) is arranged in the through hole, the steel ball (204) is arranged in the through hole (101), and the steel ball (204) abuts against the spring (203).

3. The hydraulic cylinder capable of preventing the smooth operation of jamming according to claim 1, wherein the communication hole (101) and the first oil port (103) are arranged on the same straight line.

4. The hydraulic cylinder capable of preventing the smooth operation of jamming according to claim 1, wherein an O-shaped ring groove (102) is formed in the right end of the cylinder bottom (1), and a first O-shaped ring (22) is arranged inside the O-shaped ring groove (102).

5. The hydraulic cylinder capable of preventing jamming from smooth operation according to claim 1, wherein the buffering exhaust valve (10) comprises an exhaust valve body (24), the middle of the exhaust valve body (24) is of a through structure and is in threaded connection with an exhaust valve core (25), the upper end of the exhaust valve core (25) is in threaded connection with an adjusting nut (26), the lower end of the exhaust valve core (25) is a conical surface, the cylinder head (15) is provided with an exhaust small hole, and the conical surface at the lower end of the exhaust valve core (25) is in linear contact with the exhaust small hole.

6. The hydraulic cylinder capable of preventing the clamping stagnation from smoothly running is characterized in that a Glan sealing ring (4) and a Y-shaped sealing ring (5) are arranged outside the buffer sleeve (6), and the two Y-shaped sealing rings (5) are arranged on two sides of the piston (16).

7. The hydraulic cylinder capable of preventing the smooth operation of the jamming as claimed in claim 1, wherein a Stent seal ring (13) and a dust ring (14) are arranged inside a position where the cylinder cover (12) is contacted with the piston rod (8), and the dust ring (14) is arranged on the right side of the Stent seal ring (13).

8. The hydraulic cylinder for preventing the smooth operation of the jamming as claimed in claim 1, wherein a cylindrical pin (19) for positioning is radially arranged at the threaded connection position of the buffer sleeve (18) and the piston rod (8).