CN107695641B - A hydraulic drum driven continuous belt changing device - Google Patents

Abstract

The invention discloses a continuous belt changing device driven by a hydraulic drum. The belt changing device includes a belt unloading mechanism for removing an old conveyor belt and a belt supply mechanism for providing a new conveyor belt. The starting end of the new conveyor belt is connected; the unloading mechanism is provided with a roller group that drives the old conveyor belt to move, the roller group includes more than two friction rollers, and the friction rollers in the roller group are The radially intermeshing and interlocking or the meshing and interlocking through the meshing intermediate pieces; at least one friction roller in the roller group is provided with a driving component for driving the friction roller to rotate.

Description

A hydraulic drum driven continuous belt changing device

technical field

The invention relates to the technical field of belt conveyor maintenance, in particular to a hydraulic drum-driven continuous belt changing device.

Background technique

Belt conveyor is an important equipment in coal production. It plays an irreplaceable role in coal production and is an extremely important part of realizing coal from working face to ground. Among them, the tape is the carrier for carrying and transporting coal, but during the long-term use of the tape, there is friction between the belt surface and the material, and the friction between the tape and the roller, resulting in scratches on the surface of the tape, and even corrosion of the steel wire rope. The fracture phenomenon has buried a safety hazard for the operation of the tape. Therefore, in order to ensure the safe and stable operation of the belt, it must be replaced regularly. With the continuous increase of coal transportation, the length, volume and weight of the belt also increase accordingly. In addition, the surrounding conditions of the belt conveyor equipment are complicated, resulting in Replacing tape is complex and arduous. Especially for conveyors with large inclination and long distances, it is more difficult to change the belt, and accidents such as belt slippage and belt breakage are prone to occur; and because the underground operation is forced to stop production during the belt change, the length of the belt change directly affects the coal mine. It is very important to improve the economic benefits of the coal industry and shorten the belt changing time.

In response to the above problems, the industry has also proposed solutions, such as the utility model patent with the announcement number CN203975734U and the name "belt conveyor belt changing device". The driving motor drives the hoisting drum to rotate through the planetary gear transmission. The surface of the hoisting drum is wound with a steel wire rope, one end of the steel wire rope is fixedly connected with the drum body, and the other end is connected with a tape splint, which is connected with the old belt. ; When the drive motor drives the hoisting drum to rotate, it pulls the old belt to remove. The device is driven by a planetary gear transmission, which has the advantage of a large transmission ratio, but the device cannot realize the synchronization of pulling the old belt and feeding the new belt, and can only perform short-distance tape replacement.

Another example is the invention patent with the publication number CN104003230A and the title of "A belt retracting device for belt conveyors", which consists of a hydraulic cylinder, an upper and lower crawler chassis, a hydraulic motor, and an anti-deviation device, among which the hydraulic cylinder Drive the upper and lower crawler chassis to clamp the tape, and the hydraulic motor with high torque rotates at both ends of the upper and lower crawler chassis to drive the crawler to move. The retracting and unwinding device described in this patent can realize continuous belt changing, and realize the synchronization of pulling the old belt and feeding the new belt. However, the power components that drive the conveyor belt to move include both hydraulic cylinders and hydraulic motors. The pressure of the hydraulic cylinders and the rotational speed of the hydraulic motors are mutually restricted. The control is complicated and the power consumption is high. Moreover, because of the upper and lower crawler discs, the volume is relatively large. .

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present invention are expected to provide a hydraulic drum-driven continuous belt changing device, which can not only realize the synchronization of pulling the old belt and feeding the new belt, but also has simple control, low power consumption and small size.

In order to achieve the above object, the technical scheme of the present invention is achieved in this way:

An embodiment of the present invention provides a hydraulic drum-driven continuous belt changing device, the belt changing device includes a belt unloading mechanism for removing an old conveyor belt and a belt supply mechanism for providing a new conveyor belt. The tail end of the old conveyor belt connected with the starting end of the new conveyor belt; the unloading mechanism is provided with a roller group that drives the old conveyor belt to move, the roller group includes more than two friction rollers, and the friction rollers in the roller group The radial direction of the rollers is intermeshing and interlocking or intermeshing and interlocking through the intermeshing middle piece; at least one friction roller in the roller group is provided with a driving component for driving the friction roller to rotate.

Preferably, the belt supply mechanism is provided with a roller group that drives the new conveyor belt to move, the roller group includes two or more friction rollers, and the radial directions of the friction rollers in the roller group are meshed with each other or through meshing The middle piece is engaged; at least one friction roller in the roller group is provided with a driving component for driving the friction roller to rotate.

Preferably, the roller groups of the belt unloading mechanism and the belt supply mechanism are provided with two friction rollers, and the two friction rollers of each roller group are meshed and linked by at least one first cylindrical gear, and each of the two friction rollers of the roller group is meshed and linked. A second cylindrical gear meshing with the first cylindrical gear is fixed at one end of the two friction rollers of the roller group in the same direction.

Preferably, the roller groups of the belt unloading mechanism and the belt supply mechanism respectively set the shape of the old conveyor belt and the new conveyor belt between the two friction rollers to be S-shaped, and the two friction rollers of each roller group pass through the two friction rollers. The two mutually meshing first cylindrical gears are meshed and linked.

Preferably, the friction roller comprises a roller whose outer surface is covered with rubber and a roller shaft, the roller rotates relative to the roller shaft; the driving component is a hydraulic motor, and the hydraulic motor is fixed to the roller shaft , the belt unloading mechanism and the belt supply mechanism are both provided with speed regulating components for adjusting the rotational speed of the hydraulic motor.

Preferably, each of the friction drums is provided with two hydraulic motors, and the hydraulic motors are fixed on both ends of the friction drum; a reduction box is also arranged in the friction drum, and the input end of the reduction box is connected to the The output end of the hydraulic motor is connected to the drum.

Preferably, the roller sets of the belt unloading mechanism and the belt supply mechanism are provided with inter-roller connecting plates that are fixedly connected to the roller shafts of the two friction rollers, and a center parallel to the roller shafts is arranged in the middle of the inter-roller connecting plates. A shaft, the connecting plate between the rollers and the roller group rotate relative to the central axis.

Preferably, the connecting plate between the rollers is provided with a worm gear that drives the central shaft to rotate, the worm gear is sleeved on the central shaft, and one end of the worm is provided with a hand crank to facilitate the rotation of the worm, so The hand crank is located on the upper side of the connecting plate between the rollers.

Preferably, both the belt unloading mechanism and the belt supply mechanism are provided with a tensioning mechanism for providing tension to the old conveyor belt or the new conveyor belt, and the tensioning mechanisms are both arranged above the roller group; the The tensioning mechanism includes two friction rollers respectively arranged on the old conveyor belt and the bottom of the new conveyor belt, and the friction rollers are linked with the friction rollers of the roller group through a third cylindrical gear.

Preferably, the belt changing device is further provided with a braking mechanism, and the braking mechanism is arranged at one end of the belt changing device; the braking mechanism includes a friction braking component and a power component, and the friction braking component It is arranged at the input end of the old conveyor belt and/or the output end of the new conveyor belt, and the power component is a hydraulic cylinder.

Preferably, the braking mechanism is further provided with a speed sensor for detecting the moving speed of the old conveyor belt and/or the new conveyor belt, and the power component is electrically connected to the speed sensor.

Preferably, the friction braking component includes a fixed bottom plate and a movable braking plate, and the bottom plate and the braking plate are respectively located above and below the old conveyor belt and/or the new conveyor belt; The moving plate is connected with the piston rod of the hydraulic cylinder; the friction braking part is further provided with an elastic part which pushes the braking plate to brake the old conveyor belt and/or the new conveyor belt.

In the hydraulic roller-driven continuous belt changing device provided by the embodiment of the present invention, a roller group including two or more friction rollers is arranged in the belt unloading mechanism, and the friction rollers in the roller group drive the old conveyer that needs to be removed from the belt conveyor. The belt moves, the movement of the old conveyor belt can drive the movement of the new conveyor belt that replaces the old conveyor belt, and the radial intermeshing linkage of the friction rollers in the roller group or the meshing linkage through the meshing middle piece simplifies the The setting of the driving components in the friction drum is simple to control, and the load of each friction drum is averaged, which saves power consumption on the whole; it can be seen that the hydraulic drum-driven continuous belt changing device of the embodiment of the present invention realizes the pulling of the old belt and the sending of the new belt. The belt is synchronized, and the control is simple, the power consumption is low, and the volume is small, which is more suitable for belt changing of large inclination or long-distance belt conveyors.

Description of drawings

1 is a schematic diagram of a hydraulic drum-driven continuous belt changing device according to an embodiment of the present invention;

2 is a schematic diagram of a friction roller in a hydraulic roller-driven continuous belt changing device according to an embodiment of the present invention;

Fig. 3 is the sectional schematic diagram of Fig. 2;

4 is a schematic diagram of a connecting plate between rollers in a hydraulic drum-driven continuous belt changing device according to an embodiment of the present invention;

Fig. 5 is the projection schematic diagram of Fig. 4;

6 is a schematic diagram of a braking mechanism in a hydraulic drum-driven continuous belt changing device according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of FIG. 6 .

Detailed ways

An embodiment of the present invention provides a hydraulic drum-driven continuous belt changing device, the belt changing device includes a belt unloading mechanism for removing an old conveyor belt and a belt supply mechanism for providing a new conveyor belt. The tail end of the old conveyor belt connected with the starting end of the new conveyor belt; the unloading mechanism is provided with a roller group that drives the old conveyor belt to move, the roller group includes more than two friction rollers, and the friction rollers in the roller group The radial direction of the rollers is intermeshing and interlocking or intermeshing and interlocking through the intermeshing middle piece; at least one friction roller in the roller group is provided with a driving component for driving the friction roller to rotate.

In order to better understand the belt changing device, before introducing the belt changing device, first introduce the belt changing process of the entire belt conveyor. The belt changing process includes the following steps:

1) Stop the machine, stop the operation of the belt conveyor, and disengage the power drive device from the conveyor belt, so that the conveyor belt is in a free state;

2) Fixed belt changing device, if it is an inclined shaft conveyor, it should be fixed under the head of the upper part of the conveyor shaft, if it is other conveyors, it can be at any position below the conveyor, preferably both ends of the conveyor;

3) Connect, cut off the old conveyor belt under the belt conveyor corresponding to the belt changing device, then connect one end to the belt unloading mechanism of the belt changing device, and the other end to the belt supplying mechanism of the belt changing device, and connect with the The new conveyor belt is connected; when connecting, it is also necessary to fix a special connecting belt at the head of the two conveyor belts at the truncation, because after the truncation, the length of the conveyor belt is not enough to connect to the unloading mechanism of the belt changing device at the same time. belt supply mechanism;

4) Change the belt, open the belt unloading mechanism and the belt supply mechanism of the belt changing device, and start changing the belt. The speed of the unloading mechanism and the belt supply mechanism can be adjusted according to the belt changing situation;

The belt change in the above step 4 can have two working modes; one is the automatic mode, that is, the belt is automatically changed after it is turned on, until the change is completed or the operator stops it manually; the other is the jog mode, that is, it only works after turning on The preset time will automatically stop, such as working for 1 minute, it will automatically stop. The jog mode is suitable for debugging or troubleshooting.

In order to be able to understand the features and technical contents of the embodiments of the present invention in more detail, the present invention will be further described below with reference to the accompanying drawings and specific application embodiments. The accompanying drawings are for reference only and are not intended to limit the present invention. Example.

1 is a schematic diagram of a hydraulic drum-driven continuous belt changing device according to an embodiment of the present invention. As shown in FIG. 1 , a hydraulic drum-driven continuous belt changing device includes a belt unloading mechanism, a belt supply mechanism and a braking mechanism; wherein,

The belt unloading mechanism is provided with a roller group that drives the old conveyor belt 7 to move. The roller group includes two friction rollers 2-2 and 2-3, and the diameters of the friction rollers 2-2 and 2-3 are The first cylindrical gears 12-1 and 12-2 meshing with each other are meshed and linked; the friction rollers 2-2 and 2-3 are fixed at one end of the friction rollers 2-2 and 2-3 in the same direction. 12-2 meshed second cylindrical gears 1-2, 1-3;

The friction rollers 2-2 and 2-3 are each provided with two hydraulic motors 23, and the hydraulic motors 23 are fixed to both ends of the friction rollers;

The hydraulic motor 23 has the advantages of small size, light weight, simple structure, good manufacturability, insensitivity to oil pollution, impact resistance and low inertia;

Further, the rotational speed of the hydraulic motor 23 can be adjusted to make the movement between the unloading mechanism and the supplying mechanism more coordinated; speed parts;

Specifically, the speed regulating component can be a variable pump, that is, the speed of the hydraulic motor 23 can be adjusted by adjusting the oil supply through the variable pump; the variable pump can be controlled by the control component of the belt changing device (Fig. not shown) to control;

It can be understood that the speed regulating component can also be other components that regulate the flow of liquid flowing into the hydraulic motor 23. For example, the speed regulating component can be a flow valve, that is, under the condition of a certain oil pump specification, it controls the liquid flowing into the hydraulic motor 23. flow;

Further, the control component may be a programmable logic controller (PLC, Programmable Logic Controller);

It can be understood that the control unit may also be other logic control units, such as microcontrollers (Microcontrollers).

In this way, when the belt changing device works, the two hydraulic motors 23 drive the friction rollers 2-2 and 2-3 to rotate, and the rotation of the friction rollers 2-2 and 2-3 pulls the old conveyor belt 7 to move. Realize the removal of the old conveyor belt 7;

Further, the start and stop of the hydraulic motor 23 can also be controlled by the control part, so that the movements of the two friction rollers in the roller group of the belt unloading mechanism are more coordinated.

Since the radial directions of the friction rollers 2-2 and 2-3 are meshed and linked by the two mutually meshing first cylindrical gears 12-1 and 12-2, it is a rigid linkage, so that when the loads of the friction rollers are inconsistent, , play the role of average load, save power consumption as a whole.

It can be understood that, in addition to establishing a linkage relationship between the friction rollers 2-2 and 2-3 through cylindrical gears, linkage can also be established through other meshing methods, such as chain sprockets, synchronous belt synchronous pulleys, and the like.

In order to reduce the load of the belt unloading mechanism, the belt supply mechanism is provided with a roller group that drives the new conveyor belt 11 to move. The roller group has two friction rollers 2-1 and 2-4, and the friction roller The radial directions of 2-1 and 2-4 are meshed and linked by two mutually meshing first cylindrical gears 12-1 and 12-2; one end of the friction rollers 2-1 and 2-4 in the same direction is the second cylindrical gears 1-1 and 1-4 meshing with the first cylindrical gears 12-1 and 12-2;

Like the belt unloading mechanism, the friction rollers 2-1 and 2-4 of the belt supply mechanism are each provided with two hydraulic motors 23, and the hydraulic motors 23 are fixed to both ends of the friction rollers.

Fig. 2 is a schematic diagram of a friction roller in a hydraulic roller-driven continuous belt changing device according to an embodiment of the present invention, and Fig. 3 is a schematic cross-sectional view of Fig. 2; as shown in Figs. 2-3, the friction roller includes an outer surface coating There is a drum 24 with rubber 22 and a drum shaft (not shown in the figure), the drum 24 rotates relative to the drum shaft; the driving component is a hydraulic motor 23, and the hydraulic motor 23 is fixed to the drum shaft ; There is also a reduction box 25 in the friction drum, the input end of the reduction box 25 is connected to the hydraulic motor 23, and the output end is connected to the drum 24;

Since the rotational speed of the hydraulic motor 23 is generally relatively high, the reduction box 25 is provided. In order to obtain a relatively large reduction ratio, the reduction box 25 may be reduced in multiple stages.

As shown in Figure 1, in order to increase the friction force between the friction roller and the conveyor belt, the roller groups of the belt unloading mechanism and the belt supply mechanism respectively separate the old conveyor belt 7 and the new conveyor belt 11 between the two friction rollers. Shape is set to S shape;

Specifically, the technical effect of setting the shape of the old conveyor belt 7 and the new conveyor belt 11 to be S-shaped between the two friction rollers is: the belt changing device pulls out the old conveyor belt 7 of the belt conveyor, and at the same time pulls out the old conveyor belt 7 of the belt conveyor. The old conveyor belt 11 is fed in synchronously, and the new conveyor belt 11 replaces the position of the old conveyor belt 7. Because the old conveyor belt 7 and the new conveyor belt 11 have an S-shaped shape between the two friction rollers, the friction force is large, which avoids conveying. The self-weight of the belt slides freely, which avoids the free movement of the conveyor belt on the conveyor.

In order to facilitate setting the shape of the old conveyor belt 7 and the new conveyor belt 11 to be S-shaped between the two friction rollers, in the embodiment of the present invention, the roller groups of the belt unloading mechanism and the belt supply mechanism are both set so that they can be vertically mounted. direction turn;

Specifically, the roller sets of the belt unloading mechanism and the belt supply mechanism are provided with inter-roller connecting plates 5 that are fixedly connected to the roller shafts of the two friction rollers. The central axis 51 of the rollers, the connecting plate 5 between the rollers and the roller group can rotate relative to the central axis 51; the connecting plate 5 between the rollers is shown in Figures 4 and 5;

As shown in FIG. 1 , FIG. 4 and FIG. 5 , in order to facilitate the rotation of the roller group of the belt unloading mechanism and the belt supply mechanism in the vertical direction, the connecting plate 5 between the rollers is provided with a roller that drives the central shaft 51 to rotate. Turbine worm, the worm wheel 8 is sleeved on the central shaft 51, and one end of the worm 9 is provided with a hand crank 52 that is convenient to rotate the worm 9, and the hand crank 52 is located on the connecting plate 5 between the rollers the upper side;

In this way, rotating the hand crank 52 drives the worm 9 to rotate, and the rotation of the worm 9 drives the worm wheel 8 to rotate. The radial direction of the worm wheel 8 and the central shaft 51 is linked, so that the entire roller group will be vertically direction turn;

The process of setting the shape of the old conveyor belt 7 to an S shape between the two friction rollers is: using other power devices such as a winch to pull the old conveyor belt 7, so that the old conveyor belt 7 passes through the unloading mechanism at an upward angle of 45° The passage between the two friction rollers reaches the top of the friction rollers 2-2; then, the worm 9 is rotated to drive the worm wheel 8 to rotate, thereby driving the inter-roller connecting plate 5-2 to rotate, turning 180°, that is, the old conveyor belt is completed. 7 S-shaped winding;

The process of setting the shape of the new conveyor belt 11 between the two friction rollers to be S-shaped is similar and will not be repeated here.

Further, both the belt unloading mechanism and the belt supply mechanism are provided with a tensioning mechanism for providing tension to the old conveyor belt 7 or the new conveyor belt 11, and the tensioning mechanisms are all arranged above the roller group;

The tensioning mechanism is used to prevent the old conveyor belt 7 or the new conveyor belt 11 from sliding down under the action of gravity, so it is arranged above the roller group;

Specifically, the belt changing device sets the old conveyor belt 7 and the new conveyor belt 11 to the roller group, when the power components of the roller group have not been turned on, or the belt changing device is suspended during the working process, so As mentioned above, the old conveyor belt 7 and the new conveyor belt 11 will slide down under the action of gravity, and this slide down may have a certain impact on the entire belt changing process, so it needs to be avoided.

The tensioning mechanism includes two friction rollers (not shown in the figure) which are respectively arranged on the old conveyor belt 7 or the new conveyor belt 11, and the friction rollers are connected to the drum through a third cylindrical gear. Group friction roller linkage;

Specifically, fourth cylindrical gears 4-2 and 6-2 are provided at one end of the two friction rollers above and below the new conveyor belt 11 in the same direction. The fourth cylindrical gear 4-2 is connected to the third The cylindrical gear 3-2 is meshed, and the third cylindrical gear 3-2 is meshed with the second cylindrical gear 1-3 of the friction drum;

Similarly, fourth cylindrical gears 4-1 and 6-1 are provided at one end of the two friction rollers above and below the old conveyor belt 7 in the same direction. The fifth cylindrical gear 4-1 is connected to the third cylindrical gear 4-1. The cylindrical gear 3-1 is meshed, and the third cylindrical gear 3-1 is meshed with the second cylindrical gear 1-4 of the friction drum;

Because the two friction rollers are pressed against each other, the old conveyor belt 7 or the new conveyor belt 11 cannot move along the surface of the friction rollers, and the fourth cylindrical gear 4-2 is linked with the friction rollers of the roller group, and the old conveyor belt 7 or the gravity of the new conveyor belt 11 cannot pull the friction roller to rotate, therefore, the tensioning mechanism effectively prevents the old conveyor belt 7 and the new conveyor belt 11 from sliding down under the action of gravity;

More specifically, the technical effect of setting the tensioning mechanism in the belt changing device: on the basis that the shape of the old conveyor belt 7 and the new conveyor belt 11 between the two friction rollers is set to be S-shaped, the conveyor belt can be further avoided due to The free sliding caused by its own weight also avoids the free movement of the conveyor belt on the conveyor;

Further, the shape of the old conveyor belt 7 and the new conveyor belt 11 between the two friction rollers is S-shaped and the tensioning mechanism can be set independently, which can independently produce the effect of avoiding the free sliding of the conveyor belt due to its own weight, It can also be used in combination for better results.

When the belt changing device is working normally, the friction roller rotates with the rotation of the friction roller, and the rotation direction is consistent with the moving direction of the old conveyor belt 7 or the new conveyor belt 11, which further helps the old conveyor belt 7 or the new conveyor belt 11. The movement of the new conveyor belt 11, that is, increasing the tension of the old conveyor belt 7 or the new conveyor belt 11;

In addition, since the number of teeth of the fourth cylindrical gear 4-2 and the third cylindrical gear 3-2 is much smaller than that of the second cylindrical gears 1-3 and 1-4, the rotation is accelerated, so during normal operation, The old conveyor belt 7 or the new conveyor belt 11 will slip on the friction roller of the tensioning mechanism, but it will not affect the work of the whole device.

6 is a schematic diagram of a braking mechanism in a hydraulic drum-driven continuous belt changing device according to an embodiment of the present invention, and FIG. 7 is a schematic cross-sectional view of FIG. 6 . As shown in FIG. 1 , FIG. 6 and FIG. 7 , the braking mechanism Set at one end of the belt changing device, the braking mechanism includes a braking box and a hydraulic cylinder 17; wherein,

The brake box, that is, the friction brake component, includes an upper brake box 20, a middle brake box 21 and a lower brake box 14, and the old conveyor belt 7 from the upper brake box 20 and the middle brake box 21. The new conveyor belt 11 passes between the middle brake box 21 and the lower brake box 14; the upper brake box 20 and the lower brake box 14 are both provided with a braking direction toward the conveyor belt. Brake plates 15-2, 15-1, the top of the middle brake box 21 cooperates with the upper brake box 20 to brake the old conveyor belt 7, that is, the top of the middle brake box 21 is The bottom plate matched with the brake plate 15-2 of the upper brake box 20; the bottom of the middle brake box 21 cooperates with the lower brake box 14 to brake the new conveyor belt 11, that is, the The bottom of the middle brake box 21 is the bottom plate matching the brake plate 15-1 of the lower brake box 14;

Specifically, the brake plates 15-2 and 15-1 are connected with the piston rod of the hydraulic cylinder 17;

Further, the upper brake box 20 is also provided with an elastic member 18 that pushes the brake plate 15-2 to brake the old conveyor belt 7; The moving plate 15-1 is an elastic member 18 for braking the new conveyor belt 11; the elastic member may be a butterfly spring.

Specifically, when the belt changing device is working normally, the control component, ie the PLC, instructs the piston rod of the hydraulic cylinder 17 to contract, the elastic component 18 is greatly compressed and is in an energy storage state, and the brake plates 15-2, 15 -1 is suspended; when braking is required, the control component instructs the piston rod of the hydraulic cylinder 17 to extend, and the brake plates 15-2 and 15-1 are braked under the dual pressure of the hydraulic cylinder 17 and the elastic member 18. verb: move;

In this way, when the hydraulic cylinder 17 of the braking mechanism cannot work due to the power failure or failure of the hydraulic pump, the braking plates 15-2 and 15-1 can be pushed by the elastic components to perform braking, so as to solve the problem. The problem of power failure or failure to brake;

The friction brake component of the embodiment of the present invention is made into three brake boxes, upper, middle and lower, which is convenient for manufacture and assembly. It can be understood that other structures are also possible.

Further, the braking mechanism is also provided with a speed sensor (not shown in the figure) for detecting the moving speed of the old conveyor belt 7 and the new conveyor belt 11, and the hydraulic cylinder 17 is electrically connected to the speed sensor .

Specifically, the hydraulic cylinder 17 is electrically connected to the speed sensor through the control component, that is, the speed sensor is electrically connected to the control component, and the control component is then electrically connected to the hydraulic cylinder 17. When the speed sensor detects that the moving speed of the old conveyor belt 7 or the new conveyor belt 11 is abnormal, it notifies the control part, and the control part instructs the hydraulic cylinder 17 to brake;

Further, in addition to detecting the moving speed of the old conveyor belt and the new conveyor belt through the speed sensor, the braking mechanism can also be provided with an encoder to detect the rotational speed of the friction rollers in the roller group of the belt unloading mechanism and the belt supply mechanism. When the encoder detects that the rotational speed of the friction drum is abnormal, it can also notify the control component to perform braking, and the control component can be a PLC.

Further, in order to support and fix the belt unloading mechanism, the belt supply mechanism and the braking mechanism, the belt changing device is provided with uprights 13-1 and 13-2 fixed on the ground. The box 14 is fixed to the uprights 13-1 and 13-2, and the upper brake box 20 and the middle brake box 21 are sequentially fixed to the lower brake box 14;

One side of the upper brake box 20, the middle brake box 21 and the lower brake box 14 is provided with beams 10-1 and 10-2 for fixing the belt unloading mechanism and the belt supply mechanism, because they are in the form of cantilever beams , so the beams 10-1 and 10-2 adopt relatively stable triangular shapes;

The connecting plates 5 between the rollers of the belt unloading mechanism and the belt supply mechanism are respectively fixed to the beams 10-1 and 10-2.

The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the within the protection scope of the present invention.

Claims (11)

1. A hydraulic drum-driven continuous belt changing device, characterized in that the belt changing device comprises a belt unloading mechanism for removing the old conveyor belt and a belt supply mechanism for providing a new conveyor belt, and the tail end of the old conveyor belt is It is connected with the starting end of the new conveyor belt; the unloading mechanism is provided with a roller group that drives the old conveyor belt to move, the roller group includes two friction rollers, and the friction rollers in the roller group are radially intermeshing and interlocking or meshing and interlocking through the meshing intermediate pieces; each friction roller in the roller group is provided with a driving component that drives the friction roller to rotate; The belt unloading mechanism is provided with an inter-roller connecting plate that is fixedly connected to the roller shafts of the two friction rollers. rotate relative to the central axis; The connecting plate between the rollers is provided with a worm gear and a worm that drives the central shaft to rotate, the worm gear is sleeved on the central shaft, and one end of the worm is provided with a hand crank for rotating the worm. The handle is located on the upper side of the connecting plate between the rollers. 2 . The hydraulic roller-driven continuous belt changing device according to claim 1 , wherein the belt supply mechanism is provided with a roller group for driving the new conveyor belt to move, and the roller group includes two or more friction belts. 3 . rollers, and the radial directions of the friction rollers in the roller group are meshed with each other or by engaging intermediate pieces; at least one friction roller in the roller group is provided with a driving component that drives the friction roller to rotate. 3 . The hydraulic drum-driven continuous belt changing device according to claim 2 , wherein the drum groups of the belt unloading mechanism and the belt supply mechanism are both provided with two friction drums, and each of the drum groups has two friction drums. The two friction rollers are meshed and linked by at least one first cylindrical gear, and one end of the two friction rollers of each roller group in the same direction is fixed with a second cylindrical gear that meshes with the first cylindrical gear. 4 . The hydraulic drum-driven continuous belt changing device according to claim 3 , wherein the roller groups of the belt unloading mechanism and the belt supply mechanism respectively place the old conveyor belt and the new conveyor belt between the two friction rollers. 5 . The shape of the roller is set to be S-shaped, and the two friction rollers of each roller group are meshed and linked by two mutually meshing first cylindrical gears. 5 . The hydraulic drum-driven continuous belt changing device according to claim 3 or 4 , wherein the friction drum comprises a drum and a drum shaft whose outer surface is covered with rubber, and the drum is opposite to the drum. 6 . The shaft rotates; the driving component is a hydraulic motor, the hydraulic motor is fixed on the drum shaft, and the belt unloading mechanism and the belt supply mechanism are provided with speed regulating components for adjusting the rotational speed of the hydraulic motor. 6. The hydraulic drum-driven continuous belt changing device according to claim 5, wherein each of the friction drums is provided with two hydraulic motors, and the hydraulic motors are fixed to both ends of the friction drum; The friction drum is also provided with a reduction box, the input end of the reduction box is connected to the hydraulic motor, and the output end of the reduction box is connected to the drum. 7 . The hydraulic drum-driven continuous belt changing device according to claim 6 , wherein the drum group of the belt supply mechanism is provided with a connecting plate between the rollers that is fixedly connected to the drum shafts of the two friction drums, and the rollers 7 . A central axis parallel to the roller shaft is arranged in the middle of the inter-roller connecting plate, and the inter-roller connecting plate and the roller group rotate relative to the central axis. 8 . The hydraulic drum-driven continuous belt changing device according to claim 7 , wherein the belt unloading mechanism and the belt supply mechanism are both provided with tensioners that provide tension to the old conveyor belt or the new conveyor belt. 9 . The tensioning mechanism is arranged above the roller group; the tensioning mechanism includes two friction rollers respectively arranged above and below the old conveyor belt or the new conveyor belt. The three cylindrical gears are linked with the friction rollers of the roller group. 9. The hydraulic drum-driven continuous belt changing device according to any one of claims 1 to 4, wherein the belt changing device is further provided with a braking mechanism, and the braking mechanism is arranged on the belt changing device. One end of the device; the braking mechanism includes a friction braking part and a power part, the friction braking part is arranged at the input end of the old conveyor belt and/or the output end of the new conveyor belt, the power part for the hydraulic cylinder. 10. The hydraulic drum-driven continuous belt changing device according to claim 9, wherein the braking mechanism is further provided with a speed sensor for detecting the moving speed of the old conveyor belt and/or the new conveyor belt, The power component is electrically connected to the speed sensor. 11. The hydraulic drum-driven continuous belt changing device according to claim 10, wherein the friction braking component comprises a fixed bottom plate and a movable braking plate, the bottom plate and the braking plate are respectively located in the The upper and lower parts of the old conveyor belt and/or the new conveyor belt; the brake plate is connected with the piston rod of the hydraulic cylinder; The elastic element for the braking of the conveyor belt and/or the new conveyor belt.

Images