Wheel clamping device of car dumper

Abstract

The utility model relates to the technical field of railway car sliding prevention, in particular to a car dumper wheel clamping device. The wheel clamping device comprises two sets of wheel clamping units which are symmetrically arranged, the two sets of wheel clamping units are connected through an electric-hydraulic push rod, each wheel clamping unit comprises a first wheel clamping device and a second wheel clamping device, each first wheel clamping device comprises a first connecting rod assembly, wheel clamping assemblies are hinged to the two sides of each first connecting rod assembly, and each second wheel clamping device comprises a second connecting rod assembly. Clamping wheel assemblies are hinged to the two sides of the second connecting rod assembly, the clamping wheel assemblies located on the same side are jointly connected with a brake rail, and the first connecting rod assembly and the second connecting rod assembly are connected through a connecting assembly. The electric-hydraulic push rod can drive the connecting rod assemblies at the two ends of the electric-hydraulic push rod to act, the connecting assemblies can drive multiple sets of wheel clamping devices to act at the same time, a rail wheel hub is clamped and fixed through the brake rail, the linkage structure is simple, installation and adjustment are convenient, the electric-hydraulic push rod is fast and reliable to adjust, the system operation efficiency can be improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of railway anti-runaway technology, and in particular to a wheel clamp for a tipper. Background Technology

[0002] A tippler is a large mechanical device used to unload bulk materials from open railway wagons. It is a loading and unloading machine that can tilt or tilt rail vehicles to unload materials, suitable for ports with high transport volumes and industrial sectors such as metallurgy, coal, and thermal power. An electric anti-slip device is a parking and anti-slip device suitable for railway lines where tipplers unload coal. It is also equipment that meets the automation technology requirements for tippler parking and anti-slipping. As an important functional device of the tippler system, the anti-slip device is an indispensable component to ensure the safe and reliable operation of the tippler system; its performance directly affects the efficiency and safety of the tippler.

[0003] Chinese Patent Application No. 202222049599.0 discloses a special anti-slip device for wheel clamps on tippers, including a base frame. A travel track is symmetrically fixed on the front side of the base frame, and wheel clamp tracks are symmetrically slidably arranged on the front side of the base frame, with the wheel clamp tracks located between the travel tracks. A power mechanism is fixedly mounted on the front middle section of the base frame. A trapezoidal lead screw is fixedly connected to the output end of the power mechanism. Threaded seats are symmetrically threaded onto the trapezoidal lead screw. Connecting rod 1 is hinged to both sides of the threaded seats. Connecting seats are hinged between adjacent connecting rod 1. Connecting rod 2 is fixedly connected to the side of each connecting seat away from the trapezoidal lead screw. Fixing seats 1 are fixedly arranged in an array on each connecting rod 2. The top and bottom of seat one are both hinged with connecting rod three. This wheel clamp anti-slip device can effectively improve the stability of the wheel clamp when clamping the wheel hub. However, in use, it drives the trapezoidal lead screw to rotate through the power mechanism. The trapezoidal lead screw drives the threaded seat to move in opposite directions, which in turn drives the connecting rod, connecting seat, fixed seat and wheel clamp track to move. The wheel hub is clamped and fixed on the running track through the wheel clamp track. Through the adjustment structure of the lead screw and threaded seat, the speed of clamping or releasing the wheel hub is relatively slow and the adjustment efficiency is low. Moreover, the lead screw and threaded seat are wear parts and need to be maintained and replaced regularly, which increases the maintenance and replacement cost. In addition, its power mechanism uses a servo motor and reducer, which is expensive. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of existing anti-slip wheel clamps, which use a lead screw and threaded seat to drive the wheel clamping track to clamp or release the wheel hub. These problems are slow in adjustment speed, low in efficiency, and high in maintenance and replacement costs of the power mechanism. The invention provides a wheel clamp for a tipper, in which an electro-hydraulic actuator can drive the connecting rod assemblies at both ends to move. The connecting assembly can drive multiple sets of wheel clamping devices to move simultaneously, thereby driving multiple sets of wheel clamping assemblies to move. The wheel hub of the track is clamped and fixed by a brake rail. Its linkage structure is simple, easy to install and adjust, and the electro-hydraulic actuator can be adjusted quickly and reliably, which can improve the system operating efficiency and reduce maintenance costs.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is as follows: a tipper wheel clamper, comprising two sets of symmetrically arranged wheel clamping units, which are connected by an electro-hydraulic actuator. Each wheel clamping unit includes a first wheel clamping device and a second wheel clamping device. The first wheel clamping device includes a first connecting rod assembly and a wheel clamping assembly. The first connecting rod assembly includes a first connecting block and a second connecting block. The wheel clamping assembly is hinged to both sides of the first and second connecting blocks by connecting rods. The second wheel clamping device includes a second connecting rod assembly and a wheel clamping assembly. The second connecting rod assembly includes a third connecting block and a fourth connecting block. The wheel clamping assembly is hinged to both sides of the third and fourth connecting blocks by connecting rods. The wheel clamping assemblies in the first and second wheel clamping devices are respectively mounted on a crossbeam. Wheel clamping assemblies on the same side are connected to a brake rail. The first and second connecting rod assemblies are connected by a connecting assembly. Two adjacent first wheel clamping devices are respectively connected to the cylinder of the electro-hydraulic actuator and the telescopic rod of the electro-hydraulic actuator. The electro-hydraulic actuator is electrically connected to a controller, which is installed in a control box located on one side of the wheel clamper.

[0006] Furthermore, the clamping wheel assembly includes a first slider and a second slider, which are slidably mounted on the crossbeam. One end of the first slider is hinged to a connecting rod, and the other end of the first slider is connected to the second slider via a connecting screw. A buffer spring is sleeved on the connecting screw and is located between the first and second sliders. Limiting sliders are connected to both sides of the first slider, and the limiting sliders slide in cooperation with the first limiting groove on the second slider. Second limiting grooves are also provided on both sides of the second slider, and limiting screws pass through the second limiting grooves. The two ends of the limiting screws are connected to limiting plates, which are mounted on the crossbeam. The brake rail is mounted on the second slider.

[0007] Furthermore, the first slider is slidably connected to the mounting block via a first sliding plate, and the mounting block is mounted on the crossbeam.

[0008] Furthermore, the second slider is slidably connected to the crossbeam via the second sliding plate.

[0009] Furthermore, the connecting assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a first slide block, a second slide block, and a threaded tube. One end of the first connecting rod is threadedly connected to a first connecting block, and the other end of the first connecting rod passes through the second connecting block and the first slide block and is threadedly connected to one end of the threaded tube. One end of the second connecting rod is threadedly connected to the other end of the threaded tube, and the other end of the second connecting rod passes through the second slide block and is threadedly connected to the third connecting block. One end of the third connecting rod is threadedly connected to the third connecting block, and the other end of the third connecting rod passes through a fourth connecting block and slides with the fourth connecting block. The first slide block and the second slide block are mounted on a connecting plate, and the connecting plate is connected between the two crossbeams.

[0010] Furthermore, a limiting spring is sleeved on the first connecting rod, and the limiting spring is located between the first connecting block and the second connecting block.

[0011] Furthermore, a clamping wheel proximity switch is provided on the brake rail, and the clamping wheel proximity switch is electrically connected to the controller.

[0012] Furthermore, photoelectric switches for detecting when the railcar has stopped are provided on both sides of the brake rail. The photoelectric switches are mounted on the bracket and are electrically connected to the controller.

[0013] Furthermore, a protective cover is provided above the electro-hydraulic actuator, the first clamping wheel device, the second clamping wheel device, and the connecting assembly.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) The tipper wheel clamp of this utility model has an electro-hydraulic push rod that can drive the connecting rod assembly at both ends to move. The setting of the connecting assembly can drive multiple sets of wheel clamping devices to move simultaneously, thereby driving multiple sets of wheel clamping assemblies to move. The wheel hub of the rail is clamped and fixed by the brake rail. Its linkage structure is simple, easy to install and adjust, and the electro-hydraulic push rod can be adjusted quickly and reliably, which can improve the system operating efficiency and reduce maintenance costs.

[0016] (2) The wheel clamp of the tipper of this utility model can stably clamp the wheel hub of the railcar. A buffer spring is provided between the first slider and the second slider, which can play a buffering role when clamping the wheel hub. Through the cooperation of the limiting slider and the first limiting groove and the limiting screw and the second limiting groove, the wheel clamp can prevent the wheel hub from tilting when clamping.

[0017] (3) The tipper wheel clamp of this utility model can enable multiple sets of wheel clamping devices to move synchronously through the connecting components. When the telescopic rod of the electro-hydraulic push rod extends, the first connecting rod drives the threaded tube to move closer to the second slide, thereby driving the third connecting block and the fourth connecting block to move closer to each other and push the wheel clamping assembly to move outward. The setting of the first slide and the second slide can limit and guide the first connecting rod and the second connecting rod, ensuring the stable operation of the device. By connecting the first connecting rod and the second connecting rod through the threaded tube, the distance between the two sets of wheel clamping devices can be adjusted according to the clamping requirements during device installation, thereby making the device more flexible and more practical.

[0018] (4) The tipper wheel clamp of this utility model is provided with a limit spring on the first connecting rod, and the limit spring is located between the first connecting block and the second connecting block. When the telescopic rod of the electro-hydraulic push rod extends, the first connecting block and the second connecting block move relative to each other and squeeze the limit spring at the same time. The limit spring can keep the four connecting rods in a symmetrical position and prevent the connecting rods on both sides of the first connecting block or the connecting rods on both sides of the second connecting block from shifting inward, thereby ensuring the reliable operation of the equipment. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the tipper wheel clamp of this utility model.

[0020] Figure 2 This is a structural diagram of the tipper wheel clamp of this utility model without a protective cover.

[0021] Figure 3 This is a structural diagram of the first wheel clamping device of the tipper wheel clamping device of this utility model.

[0022] In the diagram: 1. Electro-hydraulic actuator, 2. First connecting block, 3. Second connecting block, 4. Connecting rod, 5. Third connecting block, 6. Fourth connecting block, 7. Crossbeam, 8. Brake rail, 9. First slider, 10. Second slider, 11. Connecting screw, 12. Buffer spring, 13. Limiting slider, 14. First limiting groove, 15. Second limiting groove, 16. Limiting screw, 17. Limiting plate, 18. First sliding plate, 19. Mounting block, 20. Second slider, 21. First connecting rod, 22. Second connecting rod, 23. Third connecting rod, 24. First slide block, 25. Second slide block, 26. Threaded tube, 27. Limiting spring, 28. Connecting plate, 29. Clamping wheel proximity switch, 30. Photoelectric switch, 31. Bracket, 32. Protective cover, 33. Control box. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments.

[0024] like Figure 1-3The illustrated tipper wheel clamp includes two sets of symmetrically arranged wheel clamping units connected by an electro-hydraulic actuator 1. Each wheel clamping unit includes a first wheel clamping device and a second wheel clamping device. The first wheel clamping device includes a first connecting rod assembly and a wheel clamping assembly. The first connecting rod assembly includes a first connecting block 2 and a second connecting block 3. The wheel clamping assembly is hinged to both sides of the first connecting block 2 and the second connecting block 3 via connecting rods 4. The second wheel clamping device includes a second connecting rod assembly and a wheel clamping assembly. The second connecting rod assembly includes a third connecting block 5 and a fourth connecting block 6. The wheel clamping assembly is hinged to both sides of the third connecting block 5 and the fourth connecting block 6 via connecting rods 4. The clamping wheel assemblies in the first and second clamping wheel devices are respectively mounted on the crossbeam 7. The clamping wheel assemblies on the same side are connected to the brake rail 8. The first and second connecting rod assemblies are connected by a connecting assembly. The two adjacent first clamping wheel devices are respectively connected to the cylinder of the electro-hydraulic actuator 1 and the telescopic rod of the electro-hydraulic actuator 1. The electro-hydraulic actuator 1 is electrically connected to the controller. The controller is installed in the control box 33. The control box 33 is located on one side of the clamping wheel device. A protective cover 32 is provided above the electro-hydraulic actuator 1, the first clamping wheel device, the second clamping wheel device and the connecting assembly. By providing the protective cover 32, dust accumulation on the equipment can be effectively prevented.

[0025] The wheel clamping assembly includes a first slider 9 and a second slider 10, which are slidably mounted on the crossbeam 7. One end of the first slider 9 is hinged to the connecting rod 4, and the other end of the first slider 9 is connected to the second slider 10 via a connecting screw 11. A buffer spring 12 is sleeved on the connecting screw 11, located between the first slider 9 and the second slider 10. The buffer spring 12 provides a buffering effect when clamping the wheel hub. Limiting sliders 13 are connected to both sides of the first slider 9, and the limiting sliders 13 are connected to the second slider 10. The first limiting groove 14 is slidably engaged, and the second slider 10 is also provided with second limiting grooves 15 on both sides. A limiting screw 16 is inserted in the second limiting groove 15. The two ends of the limiting screw 16 are connected to the limiting plate 17. The limiting plate 17 is installed on the crossbeam 7. The brake rail 8 is installed on the second slider 10. The wheel clamping assembly can stably clamp the rail wheel hub. Through the cooperation of the limiting slider 13 with the first limiting groove 14 and the limiting screw 16 with the second limiting groove 15, the wheel clamping assembly can play a better role in limiting and preventing tilting.

[0026] Preferably, a first sliding plate 18 is installed at the lower end of the first slider 9, and the first slider 9 is slidably connected to the mounting block 19 through the first sliding plate 18. The mounting block 19 is installed on the crossbeam 7. A second slider 20 is installed at the lower end of the second slider 10, and the second slider 10 is slidably connected to the crossbeam 7 through the second sliding plate 20.

[0027] The connecting assembly includes a first connecting rod 21, a second connecting rod 22, a third connecting rod 23, a first slide block 24, a second slide block 25, and a threaded tube 26. One end of the first connecting rod 21 is threadedly connected to the first connecting block 2, and the other end of the first connecting rod 21 passes through the second connecting block 3 and the first slide block 24 and is threadedly connected to one end of the threaded tube 26. A limiting spring 27 is sleeved on the first connecting rod 21 and is located between the first connecting block 2 and the second connecting block 3. One end of the second connecting rod 22 is threadedly connected to the other end of the threaded tube 26, and the other end of the second connecting rod 22 passes through the second slide block 25 and is threadedly connected to the third connecting block 5. One end of the third connecting rod 23 is threadedly connected to the third connecting block 5, and the other end of the third connecting rod 23 passes through the fourth connecting block 6 and slides with the fourth connecting block 6. The first slide block 24 and the second slide block 25 are mounted on a connecting plate 28, which is connected between two crossbeams 7.

[0028] Preferably, a clamping wheel proximity switch 29 is provided on the brake rail 8, and the clamping wheel proximity switch 29 is electrically connected to the controller.

[0029] Preferably, photoelectric switches 30 for detecting when the railcar has stopped are provided on both sides of the brake rail 8. The photoelectric switches 30 are mounted on the bracket 31 and are electrically connected to the controller.

[0030] When the wheel clamp of this utility model is in use, after the photoelectric switch 30 detects that the railcar has stopped in place, the wheel clamp starts to work. The telescopic rod of the electro-hydraulic push rod 1 extends, driving the first connecting rod assemblies at both ends to move backward. The first connecting rod assemblies drive the first sliders 9 on both sides to move backward along the mounting block 19. The limiting sliders 13 on both sides of the first slider 9 move the first limiting grooves 14 on the second slider 10, which can limit the first slider 9 and prevent it from tilting. The first slider 9 drives the second slider 10 to move outward through the buffer spring 12. The setting of the limiting screw 16 can limit the second slider 10 and prevent it from tilting. The second slider 10 drives the brake rail 8 to move outward, and then clamps and fixes the railcar wheel hub to the rail through the brake rail 8. The wheel clamp proximity switch 29 can detect whether the brake rail 8 is clamped in place. The connecting components enable multiple sets of clamping wheel devices to move synchronously. When the telescopic rod of the electro-hydraulic actuator 1 extends, the first connecting rod 21 drives the threaded tube 26 to move closer to the second slide block 25. The second connecting block 3 moves on the first connecting rod 21 closer to the first connecting block 2, thereby driving the third connecting block 5 and the fourth connecting block 6 to move closer to each other. The fourth connecting block 6 moves on the third connecting rod 23, while simultaneously pushing the clamping wheel assembly to move outward. The first slide block 24 and the second slide block 25 can limit and guide the first connecting rod 21 and the second connecting rod 22, ensuring the stable operation of the device. The threaded tube 26 connects the first connecting rod 21 and the second connecting rod 22. During device installation, the distance between the two sets of clamping wheel devices can be adjusted according to the clamping requirements, making the device more flexible and practical.

[0031] This utility model relates to a tipper wheel clamp, where an electro-hydraulic actuator can drive the connecting rod assemblies at both ends to move. The connecting assembly can drive multiple sets of wheel clamping devices to move simultaneously, thereby driving multiple sets of wheel clamping assemblies to move. The wheel hub of the railcar is clamped and fixed by a brake rail. Its linkage structure is simple, easy to install and adjust, and the electro-hydraulic actuator can be adjusted quickly and reliably, which can improve the system operating efficiency and reduce maintenance costs.

[0032] The above description, in conjunction with preferred technical solutions, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of the utility model is limited to these descriptions. For those skilled in the art, simple deductions and substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the scope of protection of this utility model.

Claims

1. A wheel clamp for a tipper, characterized in that: The device includes two sets of symmetrically arranged clamping wheel units connected by an electro-hydraulic actuator. Each clamping wheel unit includes a first clamping wheel device and a second clamping wheel device. The first clamping wheel device includes a first connecting rod assembly and a clamping wheel assembly. The first connecting rod assembly includes a first connecting block and a second connecting block. The clamping wheel assembly is hinged to both sides of the first and second connecting blocks via connecting rods. The second clamping wheel device includes a second connecting rod assembly and a clamping wheel assembly. The second connecting rod assembly includes a third connecting block and a fourth connecting block. The clamping wheel assembly is hinged to both sides of the third and fourth connecting blocks via connecting rods. The clamping wheel assemblies in the first and second clamping wheel devices are respectively mounted on a crossbeam. Clamping wheel assemblies on the same side are connected to a brake rail. The first and second connecting rod assemblies are connected by a connecting assembly. Two adjacent first clamping wheel devices are respectively connected to the cylinder body and the telescopic rod of the electro-hydraulic actuator. The electro-hydraulic actuator is electrically connected to a controller, which is installed in a control box located on one side of the clamping wheel device.

2. The tipper wheel clamp according to claim 1, characterized in that: The clamping wheel assembly includes a first slider and a second slider, which are slidably mounted on a crossbeam. One end of the first slider is hinged to a connecting rod, and the other end of the first slider is connected to the second slider via a connecting screw. A buffer spring is sleeved on the connecting screw and is located between the first and second sliders. Limiting sliders are connected to both sides of the first slider, and the limiting sliders slide in cooperation with a first limiting groove on the second slider. A second limiting groove is also provided on both sides of the second slider, and a limiting screw passes through the second limiting groove. The two ends of the limiting screw are connected to a limiting plate, which is mounted on the crossbeam. The brake rail is mounted on the second slider.

3. The tipper wheel clamp according to claim 2, characterized in that: The first slider is slidably connected to the mounting block via a first sliding plate, and the mounting block is mounted on the crossbeam.

4. The tipper wheel clamp according to claim 2, characterized in that: The second slider is slidably connected to the crossbeam via the second sliding plate.

5. A tipper wheel clamp according to claim 1, characterized in that: The connecting assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a first slide block, a second slide block, and a threaded tube. One end of the first connecting rod is threadedly connected to a first connecting block, and the other end of the first connecting rod passes through the second connecting block and the first slide block and is threadedly connected to one end of the threaded tube. One end of the second connecting rod is threadedly connected to the other end of the threaded tube, and the other end of the second connecting rod passes through the second slide block and is threadedly connected to the third connecting block. One end of the third connecting rod is threadedly connected to the third connecting block, and the other end of the third connecting rod passes through a fourth connecting block and slides with the fourth connecting block. The first slide block and the second slide block are mounted on a connecting plate, and the connecting plate is connected between two crossbeams.

6. A tipper wheel clamp according to claim 5, characterized in that: A limiting spring is fitted on the first connecting rod, and the limiting spring is located between the first connecting block and the second connecting block.

7. A tipper wheel clamp according to claim 1, characterized in that: A clamping wheel proximity switch is installed on the brake rail, and the clamping wheel proximity switch is electrically connected to the controller.

8. A tipper wheel clamp according to claim 1, characterized in that: Photoelectric switches for detecting when the railcar has stopped are installed on both sides of the brake rail. The photoelectric switches are mounted on the bracket and are electrically connected to the controller.

9. A tipper wheel clamp according to any one of claims 1 to 8, characterized in that: A protective cover is provided above the electro-hydraulic actuator, the first clamping wheel device, the second clamping wheel device, and the connecting assembly.

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