Tension car emergency brake system

Abstract

The present application relates to the technical field of braking device, especially to the emergency braking system of tension trolley, the electromagnet module is fixedly connected to the bottom of the trolley frame, the bottom end of the electromagnet module is magnetically attracted to the magnet block, the stop block is fixedly connected to the magnet block, the recess is arranged at the bottom end of the stop block, the two sides of the recess are provided with the limiting plates, the track is located between the two limiting plates, the bottom end surface of each limiting plate is lower than the upper end surface of the track, and the friction plate is detachably connected to the recess. After the electromagnet module is electrified, the same-polarity magnetic field is generated, the same-polarity repulsion principle is utilized, the magnet block is pushed downward, the magnet block is separated from the electromagnet module, the magnet block drives the stop block to move downward, the bottom end of the limiting plate is in contact with the upper end surface of the track through the friction plate after the stop block moves downward by a certain distance, the friction force is utilized to slow down and brake the wheel, the violent collision with the equipment arranged in front and behind the tension trolley is avoided, and the safety performance is improved.

Description

Technical Field

[0001] This invention relates to the field of braking device technology, and more particularly to an emergency braking system for a tensioning trolley. Background Technology

[0002] Hydraulic tensioning is one of the commonly used tensioning methods for belt conveyors. The tensioning system is connected to the tensioning trolley via a steel wire rope. When working, one end of the tensioning trolley is connected to the conveyor belt, and the other end is connected to the tensioning device via a steel wire rope. During the operation of the belt conveyor, the tensioning trolley is responsible for continuously tensioning the conveyor belt to maintain sufficient friction between the conveyor belt and the drive drum, ensuring that the conveyor does not slip during startup, operation, and braking.

[0003] During the process of applying tension to the conveyor belt, the tensioning wire rope is subjected to large alternating loads and impact loads for a long time. In addition, wear and tear can easily cause it to break. When the tensioning wire rope or the conveyor belt suddenly breaks, the tensioning trolley loses its restraint instantly and becomes out of control. Under the action of inertia and residual tension, it will slide rapidly along the track, which can easily cause violent collisions with the equipment arranged in front of and behind the tensioning trolley. This not only damages the equipment structure but also threatens the personal safety of on-site personnel. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where, when the tensioning wire breaks, it is prone to violent collisions with equipment arranged in front of and behind the tensioning trolley, causing not only damage to the equipment structure but also threatening the personal safety of on-site personnel. Therefore, an emergency braking system for the tensioning trolley is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The design includes an emergency braking system for a tensioning trolley, comprising an electromagnet module fixedly connected to the bottom of the frame. Several wheels are mounted on the frame, each wheel being rotatably connected to a track. A magnet is magnetically attracted to the bottom of the electromagnet module, and a stop block is fixedly connected to the magnet block. The stop block has inclined surfaces on opposite sides and a groove at its bottom. Limiting plates are provided on both sides of the groove. The track is located between two limiting plates, and the bottom surface of each limiting plate is lower than the upper surface of the track. A friction plate is detachably connected to the groove.

[0006] Preferably, the frame is equipped with anti-climb hooks to prevent derailment.

[0007] Preferably, the stop is a non-metallic nylon block, and the stop and the limiting plate are an integral structure.

[0008] Preferably, the bottom end of the friction plate is provided with anti-wear teeth.

[0009] Preferably, the friction plate is provided with a plurality of locking blocks, and the groove is provided with a plurality of locking slots, each of the locking blocks engaging with a corresponding locking slot.

[0010] Preferably, each of the two sides of the stop block is provided with a fixed seat, and each fixed seat is fixedly connected with a guide rod. Both sides of the electromagnet module are fixedly connected with perforated plates, and each guide rod cooperates with the corresponding perforated plate.

[0011] Preferably, a reinforcing plate is fixedly connected to both sides of the stop block, a fixing plate is detachably connected to each reinforcing plate, a connecting plate is detachably connected to the bottom end of each fixing plate, a vertical plate is fixedly connected to the bottom end of the connecting plate, and a gap is provided between the vertical plate and the side wall of the track.

[0012] Preferably, an elastic pad is installed on the side of each vertical plate closest to the track.

[0013] The emergency braking system for tensioning trolleys proposed in this invention has the following advantages: When the electromagnet module is energized, it generates a magnetic field with the same polarity as the magnet. Utilizing the principle of like poles repulsion, the magnet is pushed downwards, causing it to separate from the electromagnet module. The magnet then drives the stop block to move downwards. After the stop block moves downwards a certain distance, the bottom end of the limit plate contacts the upper surface of the track through a friction plate. The friction force is used to decelerate and brake the wheels, preventing violent collisions with the equipment arranged in front of and behind the tensioning trolley and improving safety performance. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the emergency braking system for the tensioning trolley proposed in this invention; Figure 2 This is a side view of the emergency braking system for the tensioning trolley proposed in this invention. Figure 3 This is a schematic diagram of the connection between the stop block and the fixed seat in the emergency braking system of the tensioning trolley proposed in this invention; Figure 4 This is a schematic diagram of the connection between the friction plate and the anti-wear teeth in the emergency braking system of the tensioning trolley proposed in this invention; Figure 5 This is a cross-sectional schematic diagram of the connection between the friction plate and the anti-wear teeth in the tensioning trolley emergency braking system proposed in this invention. Figure 6 This is a schematic diagram of the structure in this invention where the stop block falls and comes into contact with the wheel.

[0015] In the diagram: 1. Electromagnet module; 2. Frame; 3. Wheel; 4. Track; 5. Speed ​​monitor; 6. Alarm; 7. Anti-climb hook; 8. Magnet block; 9. Stop block; 10. Inclined surface; 11. Groove; 12. Limiting plate; 13. Friction plate; 14. Anti-wear teeth; 15. Locking block; 16. Locking slot; 17. Fixing seat; 18. Guide rod; 19. Perforated plate; 20. Reinforcing plate; 21. Fixing plate; 22. Connecting plate; 23. Vertical plate; 24. Elastic pad. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] Example 1: Refer to Figures 1-5 The emergency braking system of the trolley includes an electromagnet module 1, which is fixedly connected to the bottom of the frame 2. Several wheels 3 are mounted on the frame 2, each wheel 3 being rolled onto a track 4. The frame 2 is equipped with a speed monitor 5 for speed detection, an alarm 6, and an anti-derailment hook 7. A magnet block 8 is magnetically attracted to the bottom of the electromagnet module 1, and a stop block 9 is fixedly connected to the magnet block 8. The stop block 9 has inclined surfaces 10 on both opposite sides, and a groove 11 at its bottom. Limiting plates 12 are provided on both sides, and the track 4 is located between the two limiting plates 12. The stop block 9 is a non-metallic nylon block, and the stop block 9 and the limiting plate 12 are an integral structure. The bottom end of each limiting plate 12 is lower than the upper end of the track 4. A friction plate 13 is detachably connected to the groove 11. There is a gap between the friction plate 13 and the upper end of the track 4. The bottom end of the friction plate 13 is provided with anti-wear teeth 14, which are nylon teeth. Several locking blocks 15 are provided on the friction plate 13, and several slots 16 are opened on the groove 11. Each locking block 15 is engaged with the corresponding slot 16.

[0018] Work process: Initially, the electromagnet module 1 is in a de-energized state and does not generate electromagnetic repulsion. The magnet block 8 is attracted to the bottom of the electromagnet module 1 by its own magnetism, thereby lifting the stop block 9 so that the friction plate 13 at the bottom end maintains a set distance from the upper surface of the track 4 and does not contact the track 4, thus not affecting the normal driving of the trolley. The anti-climb hook 7 assists the trolley to prevent the wheels 3 from derailing during operation. Speed ​​monitor 5 monitors the speed of the trolley in real time. When speed monitor 5 detects that the trolley is out of control, the trolley's control system controls the electromagnet module 1 to be energized. The electromagnet module 1 generates a magnetic field with the same polarity as the magnet block 8. Using the principle of like poles repulsion, the magnet block 8 is pushed downward, causing the magnet block 8 to separate from the electromagnet module 1. The magnet block 8 drives the stop block 9 to move downward. Since the track 4 is located between the two limit plates 12, the stop block 9 will not deviate when it moves downward. After the stop block 9 moves downward a certain distance, the bottom end of the limit plate 12 contacts the upper surface of the track 4 through the friction plate 13. The friction plate 13 contacts the upper surface of the track 4 through the anti-wear teeth 14. The stop block 9 is popped out instantly by using electromagnetic like poles repulsion, avoiding mechanical jamming, with rapid braking response and high reliability. After the wheel 3 travels a certain distance, it contacts the inclined plane 10 and applies a downward squeezing force to the stop block 9. The stop block 9 is squeezed and contacts the upper surface of the track 4 through the friction plate 13 and the anti-wear teeth 14. The nylon non-metallic material will not produce metal impact or sparks with the track. The friction force slows down and brakes the wheel 3 to avoid violent collisions with the equipment arranged in front and behind the tensioning trolley, thus improving safety performance. At the same time, the alarm 6 emits an audible and visual alarm to remind the on-site personnel that the equipment has been braked in an emergency and needs to be inspected in time. The friction plate 13 can be quickly disassembled and assembled via the locking block 15 and the locking slot 16 without the need to replace the entire stop block 9. It is also equipped with anti-wear teeth 14 at the bottom, which concentrates the wear on the friction plate while ensuring braking force, making it easy to replace and extending the service life of the track and the main structure.

[0019] Example 2: After maintenance, it is inconvenient to place the magnet block 8 in the initial position at the bottom of the electromagnet module 1. Refer to... Figures 3-5 As another preferred embodiment of the present invention, the difference from embodiment 1 is that the stop block 9 is provided with a fixed seat 17 on both sides, and a guide rod 18 is fixedly connected to each fixed seat 17. The electromagnet module 1 is fixedly connected to both sides with a perforated plate 19. Each guide rod 18 cooperates with the corresponding perforated plate 19. When inspecting and repositioning, the guide rod 18 is inserted into the perforated plate 19. The guide rod 18 cooperates with the perforated plate 19 to limit the stop block 9, so as to quickly place the magnet block 8 at the initial position at the bottom of the electromagnet module 1.

[0020] Example 3: When wheel 3 presses against the inclined surface 10 of stop block 9, stop block 9 is prone to shaking. (Refer to...) Figures 3-5As another preferred embodiment of the present invention, the difference from embodiment 1 is that both sides of the stop block 9 are fixedly connected to a reinforcing plate 20, each reinforcing plate 20 is detachably connected to a fixing plate 21, each fixing plate 21 is detachably connected to a connecting plate 22 at the bottom end, the bottom end of the connecting plate 22 is fixedly connected to a vertical plate 23, a gap is provided between the vertical plate 23 and the side wall of the track 4, and an elastic pad 24 is installed on the side of each vertical plate 23 near the track 4. The stop block 9 fixes the reinforcing plate 20, and the reinforcing plate 20 fixes the vertical plate 23 through the fixing plate 21. When the wheel 3 squeezes the inclined surface 10 and causes the stop block 9 to shake, the vertical plate 23 contacts the side wall of the track 4 through the elastic pad 24 to limit the stop block 9, so that the stop block 9 will not shake when squeezed, thus improving the braking effect.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A trolley emergency braking system, comprising an electromagnet module (1), the electromagnet module (1) being fixedly connected to the bottom of a frame (2), the frame (2) having a plurality of wheels (3) mounted thereon, each wheel (3) being rotatably connected to a track (4), characterized in that, in: The bottom end of the electromagnet module (1) is magnetically attracted to a magnet block (8), and a stop block (9) is fixedly connected to the magnet block (8). The stop block (9) has inclined surfaces (10) on both sides. The bottom end of the stop block (9) has a groove (11). The two sides of the groove (11) are provided with limiting plates (12). The track (4) is located between the two limiting plates (12). The bottom end of each limiting plate (12) is lower than the upper end of the track (4). A friction plate (13) is detachably connected to the groove (11).

2. The emergency braking system for the tensioning trolley according to claim 1, characterized in that, The frame (2) is equipped with anti-climb hooks (7) to prevent derailment.

3. The emergency braking system for the tensioning trolley according to claim 1, characterized in that, The stop block (9) is a non-metallic nylon block, and the stop block (9) and the limiting plate (12) are an integral structure.

4. The emergency braking system for the tensioning trolley according to claim 1, characterized in that, The friction plate (13) is provided with anti-wear teeth (14) at its bottom end.

5. The tensioning trolley emergency braking system according to claim 4, characterized in that, The friction plate (13) is provided with a number of locking blocks (15), and the groove (11) is provided with a number of locking slots (16). Each locking block (15) is engaged with a corresponding locking slot (16).

6. The emergency braking system for the tensioning trolley according to claim 2, characterized in that, The stop block (9) has a fixed seat (17) on each side. Each fixed seat (17) is fixedly connected to a guide rod (18). Both sides of the electromagnet module (1) are fixedly connected to perforated plates (19). Each guide rod (18) is matched with the corresponding perforated plate (19).

7. The emergency braking system for the tensioning trolley according to claim 6, characterized in that, The two sides of the stop block (9) are fixedly connected with reinforcing plates (20), and each reinforcing plate (20) is detachably connected with a fixing plate (21). The bottom end of each fixing plate (21) is detachably connected with a connecting plate (22). The bottom end of the connecting plate (22) is fixedly connected with a vertical plate (23). There is a gap between the vertical plate (23) and the side wall of the track (4).

8. The emergency braking system for the tensioning trolley according to claim 7, characterized in that, Each of the vertical plates (23) has an elastic pad (24) installed on the side closest to the track (4).

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