Anti-falling emergency parking protection device for scraper reclaimer

Abstract

This utility model provides a fall prevention emergency stop protection device for a scraper conveyor, including a protective net, a traction rope, a main connecting ring, and an emergency stop device connected to the control end of the scraper conveyor. The emergency stop device and the main connecting ring are respectively set at two adjacent corners of the upper end of the scraper conveyor inlet trough. One end of the traction rope is fixedly connected to the emergency stop device, and the other end can be movably passed through the main connecting ring and fixed at the other corner of the upper end of the scraper conveyor inlet trough away from the emergency stop device, arranged diagonally with the emergency stop device. Two adjacent edges of the protective net are respectively fixed on the two edges of the upper end of the scraper conveyor inlet trough opposite to the traction rope. The other two edges of the protective net are fixed at intervals along the extension direction of the traction rope, so that the protective net is pulled by the traction rope to be laid parallel to the upper end of the scraper conveyor inlet trough, which can prevent workers from falling, facilitate workers' grip, and improve the safety of workers.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology for scraper conveyors, specifically to an emergency stop protection device for scraper conveyors to prevent falls. Background Technology

[0002] Scraper transfer conveyors are coal mining equipment used in conjunction with scraper conveyors, crushers, and belt conveyors. In the working environment of a fully mechanized mining face, the inlet chute of the scraper transfer conveyor needs to connect with the scraper conveyor to transfer coal transported from the face to the belt conveyor. Due to the special environment, limited space, and complex equipment operation of fully mechanized mining faces, workers often need to cross over the inlet chute of the scraper transfer conveyor to work. However, existing scraper transfer conveyors have an open design above the inlet chute to facilitate coal entry into the chute, posing a risk of workers falling into the chute during operation. If a person falls into the scraper conveyor and the transfer machine fails to stop in time, the chain and crusher of the scraper conveyor are very likely to cause serious injury to the falling person. In order to effectively prevent scraper conveyor injury incidents, in the existing technology, a pull rope emergency stop switch is generally installed above the inlet chute of the scraper conveyor. A pull rope is set on the pull rope emergency stop switch. If the operator falls into the chute, he can pull the pull rope emergency stop switch to stop the scraper conveyor in an emergency.

[0003] However, in actual use, the safety of existing pull-rope emergency stop switches is constrained by many factors. First, the visibility is poor in the longwall mining face, and the pull rope connected to the pull-rope emergency stop switch is generally a single, thin design, making it difficult for operators to observe the position of the pull rope. Second, when operators fall into the chute, they are usually in a state of panic and it is difficult for them to accurately grab the pull rope. Therefore, even if a pull-rope emergency stop switch is installed, injuries still occur frequently on scraper conveyors during actual operation, posing a significant safety hazard. Utility Model Content

[0004] In view of this, it is necessary to provide a fall protection device for scraper conveyors that can prevent workers from falling.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An emergency stop protection device for a scraper conveyor includes a quadrilateral protective net matching the scraper conveyor's inlet trough, a traction rope, a main connecting ring, and an emergency stop device connected to the scraper conveyor's control end. The emergency stop device and the main connecting ring are respectively located at two adjacent corners of the upper end of the scraper conveyor's inlet trough. One end of the traction rope is fixedly connected to the emergency stop device, and the other end can be movably passed through the main connecting ring and fixedly located at another corner of the upper end of the scraper conveyor's inlet trough away from the emergency stop device, diagonally opposite to the emergency stop device. Two adjacent edges of the protective net are respectively fixed to the two edges of the upper end of the scraper conveyor's inlet trough opposite to the traction rope. The other two edges of the protective net are fixed at intervals along the extension direction of the traction rope, so that the protective net can be pulled by the traction rope to lay it parallel to the upper end of the scraper conveyor's inlet trough for protection. The protective net can pull the traction rope after being subjected to external force, so that the traction rope can trigger the emergency stop device to stop the scraper conveyor in an emergency.

[0007] Preferably, the emergency stop device includes a pull rope switch connected to the control end of the scraper conveyor and an auxiliary pull rope mechanism. The auxiliary pull rope mechanism is located at one corner of the upper end of the inlet trough of the scraper conveyor and is fixedly connected to the traction rope. The pull rope switch is located on the side of the auxiliary pull rope mechanism away from the main connecting ring. A connecting rope is provided on the pull rope switch. The far end of the connecting rope away from the pull rope switch is connected to the auxiliary pull rope mechanism. The traction rope can pull the auxiliary pull rope mechanism to rotate. When the auxiliary pull rope mechanism rotates, it can pull the connecting rope to trigger the pull rope switch to work, so as to perform an emergency stop on the scraper conveyor.

[0008] Preferably, the auxiliary pull rope mechanism includes a bracket, a traction arm, and a counterweight. The bracket is vertically installed at one corner of the upper end of the inlet trough of the scraper conveyor. The traction arm is longitudinally pinned to the upper end of the bracket. The upper end of the traction arm extends towards the main connecting ring, and its lower end extends towards the pull rope switch. It can rotate freely up and down around the bracket. The connecting rope and the traction rope are respectively connected to the lower end of the traction arm. The counterweight is fixedly installed at the upper end of the traction arm. By counterweighting the traction arm, the traction arm can pull the traction rope towards the pull rope switch, thereby resetting the pull rope switch.

[0009] Preferably, the weight of the counterweight is greater than the tension of the traction rope pulling the unloaded protective net, and less than the weight of the worker's body.

[0010] Preferably, the anti-fall emergency stop protection device for the scraper conveyor further includes a guide ring. The guide ring is set on the upper edge of the scraper conveyor inlet groove on the side of the support facing the main connecting ring, close to the support, and aligned in a straight line with the traction arm and the main connecting ring on the support. The traction rope passes through the guide ring and is connected to the lower end of the traction arm. The traction rope can be freely pulled and moved in the guide ring.

[0011] Preferably, the anti-fall emergency stop protection device for the scraper conveyor further includes several auxiliary connecting rings. The auxiliary connecting rings are fixed at intervals along the extension direction of the traction rope on the upper edge of the inlet groove of the scraper conveyor. The traction rope passes through each auxiliary connecting ring in sequence and can be freely pulled and moved in each auxiliary connecting ring.

[0012] Preferably, the fall prevention emergency stop protection device for the scraper conveyor further includes several fixing rings, which are fixed at intervals on the two edges of the upper end of the scraper conveyor inlet groove opposite to the traction rope, and are respectively fixedly connected to the two edges of the protective net at intervals.

[0013] Preferably, the protective net is a grid structure woven from steel wire rope or nylon rope, with a mesh size of 15-20cm; the traction rope is a steel wire rope.

[0014] Preferably, the protective net is provided with a number of connecting buckles at intervals on its four edges, and the protective net is fixedly connected to the fixing ring and the traction rope through the connecting buckles.

[0015] Preferably, the fall prevention emergency stop protection device for the scraper conveyor further includes a reset switch, which is electrically connected to the control terminal of the scraper conveyor. The reset switch releases the stop state of the scraper conveyor.

[0016] As can be seen from the above technical solution, the anti-fall emergency stop protection device for scraper conveyors provided in this application includes a protective net, a traction rope, a main connecting ring, and an emergency stop device connected to the control end of the scraper conveyor. The emergency stop device and the main connecting ring are respectively set at two adjacent corners of the upper end of the scraper conveyor inlet trough. One end of the traction rope is fixedly connected to the emergency stop device, and the other end can be movably passed through the main connecting ring and fixedly set at the other corner of the upper end of the scraper conveyor inlet trough away from the emergency stop device, arranged diagonally with the emergency stop device. Two adjacent edges of the protective net are respectively fixed on the two edges of the upper end of the scraper conveyor inlet trough opposite to the traction rope. The other two edges of the protective net are fixed at intervals along the extension direction of the traction rope. The protective netting is pulled along the guide rope to be laid parallel to the upper end of the scraper conveyor's inlet trough for sealing and protection. The advantages are: the parallel-laid protective netting has a large coverage area, preventing workers from falling from above the inlet trough; even if a worker falls from the front of the inlet trough, they can easily grab the netting from below. Furthermore, the two edges of the netting are fixed to the guide rope at intervals, creating multiple points of tension. When a worker grabs the netting from below, they can easily pull the guide rope through the netting, which in turn triggers the emergency stop device to stop the scraper conveyor, improving worker safety and reducing the risk of injury from the scraper conveyor. Attached Figure Description

[0017] Figure 1 This is a side view of the structure of the utility model installed at the upper end of the inlet trough of the scraper transfer machine.

[0018] Figure 2 A top view of the protective netting laid parallel to the upper end of the scraper conveyor inlet trough.

[0019] Figure 3 This is a side view of the emergency parking device.

[0020] In the diagram: 10 protective net, 11 connecting buckle, 20 traction rope, 30 main connecting ring, 40 emergency stop device, 41 pull rope switch, 42 auxiliary pull rope mechanism, 43 connecting rope, 421 bracket, 422 traction arm, 423 counterweight, 424 limit plate, 425 pin, 426 connecting hole, 50 secondary connecting ring, 60 fixing ring, and 70 guide ring. Detailed Implementation

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Please refer to Figures 1 to 3This utility model provides a fall-prevention emergency stop protection device for a scraper conveyor, including a quadrilateral protective net 10 matching the scraper conveyor inlet trough, a traction rope 20, a main connecting ring 30, and an emergency stop device 40 connected to the scraper conveyor control end. The emergency stop device 40 and the main connecting ring 30 are respectively set at two adjacent corners of the upper end of the scraper conveyor inlet trough. One end of the traction rope 20 is fixedly connected to the emergency stop device 40, and the other end can be movably passed through the main connecting ring 30 and then fixedly set at another corner of the upper end of the scraper conveyor inlet trough away from the emergency stop device 40, arranged diagonally with the emergency stop device 40. Two adjacent edges of the protective net 10 are respectively fixed to the scraper conveyor inlet. On the two edges opposite to the traction rope 20 at the upper end of the trough, the other two edges of the protective net 10 are fixed at intervals along the extension direction of the traction rope 20, so that the protective net 10 can be pulled by the traction rope 20, so that the protective net 10 is laid parallel to the upper end of the scraper transfer machine inlet trough. The protective net 10 establishes a protective barrier at the upper end of the scraper transfer machine inlet trough. First, it can prevent workers from falling from above the inlet trough. Second, the horizontally laid protective net 10 has a large coverage area. If a worker falls from the front of the inlet trough, he can easily grab the protective net 10 from below. Then, the protective net 10 can be used to pull the traction rope 20, and the traction rope 20 can trigger the emergency stop device 40 to stop the scraper transfer machine in an emergency.

[0023] Specifically, the emergency stop device 40 includes a pull rope switch 41 connected to the control end of the scraper conveyor and an auxiliary pull rope mechanism 42. The upper end of the scraper conveyor inlet slot has a rectangular opening. The auxiliary pull rope mechanism 42 includes a bracket 421, a traction arm 422, and a counterweight 423. The bracket 421 is vertically installed at one corner of the upper opening of the scraper conveyor inlet slot. The main connecting ring 30 has a ring structure and is fixedly installed at the other corner of the upper end of the scraper conveyor inlet slot adjacent to the bracket 421. The pull rope switch 41 is located on the side of the bracket 421 away from the main connecting ring 30 and is spaced apart from the bracket 421. The pull rope switch 41 and the scraper... The control terminal of the transfer machine is connected to control the stopping of the scraper transfer machine. A pin 425 is horizontally arranged on the upper end of the bracket 421. The middle part of the traction arm 422 is longitudinally pinned to the upper end of the bracket 421 via the pin 425. The upper end of the traction arm 422 extends towards the main connecting ring 30, and its lower end extends towards the pull rope switch 41. It can freely rotate up and down around the bracket 421 towards the main connecting ring 30. One end of the traction rope 20 is fixedly connected to the lower end of the traction arm 422. The other end of the traction rope 20 can movably pass through the main connecting ring 30 and is fixedly set at the upper end of the scraper transfer machine inlet groove away from the bracket 421. The bracket 421 is arranged diagonally. Two adjacent edges of the protective net 10 are respectively fixed to the two adjacent edges of the upper end of the scraper conveyor inlet chute. The other two edges of the protective net 10 are fixed at intervals to the traction rope 20 along its extension direction. A connecting hole 426 is provided at the lower end of the traction arm 422. A pull rope 43 is provided on the pull rope switch 41 to trigger its operation. The far end of the pull rope 43, away from the pull rope switch 41, is connected to the connecting hole 426 at the lower end of the traction arm 422. The counterweight 423 is fixedly installed at the upper end of the traction arm 422 to counterweight the traction arm 422. Under the weight of the counterweight 423, the lower end of the traction arm 422 rotates towards the pull rope switch 41, which pulls the traction rope 20 towards the pull rope switch 41, resetting the pull rope switch 41. This also pulls the protective net 10, causing it to be laid parallel to the upper end of the scraper conveyor inlet trough. When the protective net 10 is subjected to a downward pulling force, it can generate a reverse pulling force on the traction rope 20. The traction rope 20 can pull the lower end of the traction arm 422 towards the main connecting ring 30. Furthermore, the traction arm 422 can pull the pull rope 43 to trigger the pull rope switch 41, thereby stopping the scraper conveyor in an emergency.

[0024] Please refer to Figure 3In the above embodiment, the weight of the counterweight 423 is greater than the pulling force of the traction rope 20 pulling the unloaded protective net 10, and less than the weight of the worker's body. Furthermore, a limit plate 424 is provided on the side of the bracket 421 facing the main connecting ring 30. The limit plate 424 is used to limit and stop the lower end of the traction arm 422. When the traction rope 20 pulls the lower end of the traction arm 422 towards the main connecting ring 30 and pulls the pull rope 43 to trigger the pull rope switch 41, the lower end of the traction arm 422 will be stopped by the limit plate 424, restricting its continued rotation. The auxiliary pull rope mechanism 42 can protect the pull rope switch 41, preventing excessive tension from the traction rope 20 from damaging the pull rope switch 41.

[0025] Please refer to Figure 1 or Figure 2 In the above embodiment, a guide ring 70 is fixedly installed on the upper edge of the scraper conveyor inlet groove on the side of the support 421 facing the main connecting ring 30. The guide ring 70 is close to the support 421 and is aligned in a straight line with the traction arm 422 and the main connecting ring on the support 421. The ring hole of the guide ring 70 is directly opposite the traction arm 422. The traction rope 20 passes through the guide ring 70 and is connected to the lower end of the traction arm 422. The traction rope 20 can be freely pulled and moved in the guide ring 70. The guide ring 70 can limit and guide the traction rope 20, so that the traction rope 20 is aligned in a straight line with the lower end of the traction arm 422. This allows the traction rope 20 to exert a straight pulling force on the traction arm 422 after being subjected to the lateral pulling force of the protective net 10, so that the lower end of the traction arm 422 can easily rotate towards the main connecting ring 30.

[0026] Please continue reading. Figure 2 Furthermore, the anti-fall emergency stop protection device for the scraper conveyor also includes several auxiliary connecting rings 50. These auxiliary connecting rings 50 are fixedly installed at intervals along the extension direction of the traction rope 20 on the upper edge of the inlet groove of the scraper conveyor. The auxiliary connecting rings 50 are ring-shaped structures. The traction rope 20 passes through each auxiliary connecting ring 50 in sequence and can be freely pulled and moved within each auxiliary connecting ring 50. The auxiliary connecting rings 50 can form a multi-point fixation for the traction rope 20, improving the support force of the traction rope 20 and strengthening the sealing at the edge of the protective net 10 connected to the traction rope 20.

[0027] Furthermore, the anti-fall emergency stop protection device for the scraper conveyor also includes several fixing rings 60. The fixing rings 60 are fixed at intervals on the two edges opposite to the traction rope 20 at the upper end of the scraper conveyor inlet groove by welding or bolts. Several connecting buckles 11 are provided at intervals on the four edges of the protective net 10. The protective net 10 is fixedly connected to the fixing rings 60 and the traction rope 20 through the connecting buckles 11.

[0028] The anti-fall emergency stop protection device for the scraper conveyor also includes a reset switch. The reset switch is electrically connected to the control terminal of the scraper conveyor. When the scraper conveyor is stopped by the pull rope switch 41 and an emergency stop is triggered, the reset switch must be manually operated to release the stop state of the scraper conveyor.

[0029] In a preferred embodiment, the fall prevention emergency stop protection device for the scraper conveyor also includes an audible and visual alarm device. The audible and visual alarm device is electrically connected to the control terminal of the scraper conveyor. When the scraper conveyor makes an emergency stop, the audible and visual alarm device can emit corresponding audible and visual cues to provide a reminder.

[0030] It should be noted that when the protective net 10 is fixedly connected to the traction rope 20 through the connecting buckle 11, the connecting buckle 11 should be fixed between the two secondary connecting rings 50, or fixed on the side of the secondary connecting ring 50 away from the bracket 421, so that the traction rope 20 can be freely pulled and moved in the secondary connecting ring 50, and prevent the traction rope 20 from being blocked by the connecting buckle 11 when pulling the traction arm 422.

[0031] In the above embodiments, the traction rope 20 is a flexible steel wire rope; the protective net 10 is a grid structure woven from steel wire rope or nylon rope, and its mesh size is preferably 15-20cm. The large mesh structure makes it easy for workers to grip.

[0032] This scraper conveyor uses a fall-prevention emergency stop protection device. A traction rope 20 pulls a protective net 10, laying it parallel to the top of the scraper conveyor's inlet trough for sealing and protection. If a worker falls from above the inlet trough, the net 10 can catch them. Furthermore, the parallel-laid net 10 provides a wider grabbing area; if a worker falls from the front of the inlet trough, they can easily grab the net 10 from below. Additionally, the two edges of the net 10 are fixed to the traction rope 20 at intervals, creating multiple points of force. Once a worker grabs the net 10, they can easily pull the traction rope 20, which in turn activates a pull-rope switch 41, stopping the scraper conveyor. After stopping, the scraper conveyor must be manually deactivated. This fall-prevention emergency stop protection device improves worker safety and reduces the risk of injury from the scraper conveyor.

[0033] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A kind of anti-falling emergency parking protective device for scraper reclaimer, it is characterized in that: The system includes a quadrilateral protective netting that matches the inlet trough of the scraper conveyor, a traction rope, a main connecting ring, and an emergency stop device connected to the control end of the scraper conveyor. The emergency stop device and the main connecting ring are respectively located at two adjacent corners of the upper end of the scraper conveyor inlet trough. One end of the traction rope is fixedly connected to the emergency stop device, and the other end can be movably passed through the main connecting ring and fixedly located at the other corner of the upper end of the scraper conveyor inlet trough away from the emergency stop device, diagonally opposite to the emergency stop device. Two adjacent edges of the protective netting are respectively fixed to the two edges of the upper end of the scraper conveyor inlet trough opposite to the traction rope. The other two edges of the protective netting are fixed at intervals along the extension direction of the traction rope, so that the protective netting can be pulled by the traction rope to be laid parallel to the upper end of the scraper conveyor inlet trough for protection. The protective netting can pull the traction rope after being subjected to external force, so that the traction rope can trigger the emergency stop device to stop the scraper conveyor in an emergency.

2. The anti-falling emergency parking protective device for the scraper reclaimer according to claim 1, characterized in that: The emergency stop device includes a pull rope switch connected to the control end of the scraper conveyor and an auxiliary pull rope mechanism. The auxiliary pull rope mechanism is located at one corner of the upper end of the inlet trough of the scraper conveyor and is fixedly connected to the traction rope. The pull rope switch is located on the side of the auxiliary pull rope mechanism away from the main connecting ring. A connecting rope is provided on the pull rope switch. The far end of the connecting rope away from the pull rope switch is connected to the auxiliary pull rope mechanism. The traction rope can pull the auxiliary pull rope mechanism to rotate. When the auxiliary pull rope mechanism rotates, it can pull the connecting rope to trigger the pull rope switch to work, so as to perform an emergency stop on the scraper conveyor.

3. The anti-falling emergency parking protective device for the scraper reclaimer according to claim 2, characterized in that: The auxiliary rope pulling mechanism includes a bracket, a traction arm, and a counterweight. The bracket is erected at one corner of the upper end of the inlet trough of the scraper conveyor. The traction arm is longitudinally pinned to the upper end of the bracket. The upper end of the traction arm extends towards the main connecting ring, and its lower end extends towards the rope pulling switch. It can rotate freely up and down around the bracket. The connecting rope and the traction rope are respectively connected to the lower end of the traction arm. The counterweight is fixedly installed at the upper end of the traction arm. By counterweighting the traction arm, the traction arm can pull the traction rope towards the rope pulling switch, thereby resetting the rope pulling switch.

4. The anti-falling emergency parking protective device for the scraper reclaimer according to claim 3, characterized in that: The weight of the counterweight is greater than the tension of the traction rope pulling the unloaded protective net, and less than the weight of the worker's body.

5. The anti-falling emergency parking protective device for the scraper reclaimer according to claim 1 or 4, characterized in that: It also includes a guide ring, which is set on the upper edge of the scraper conveyor inlet groove on the side of the support facing the main connecting ring, close to the support, and aligned in a straight line with the traction arm and the main connection on the support. The traction rope passes through the guide ring and is connected to the lower end of the traction arm, and the traction rope can be freely pulled and moved in the guide ring.

6. The anti-falling emergency parking protective device for the scraper reclaimer according to claim 1 or 4, characterized in that: It also includes several auxiliary connecting rings, which are fixed at intervals along the extension direction of the traction rope on the upper edge of the inlet trough of the scraper conveyor. The traction rope passes through each auxiliary connecting ring in sequence and can be freely pulled and moved in each auxiliary connecting ring.

7. The anti-falling emergency parking protective device for the scraper reclaimer according to claim 5, characterized in that: It also includes several fixing rings, which are fixed at intervals on the two edges of the upper end of the scraper conveyor inlet trough opposite to the traction rope, and are respectively fixedly connected to the two edges of the protective net at intervals.

8. The fall protection device for a scraper conveyor as described in claim 6, characterized in that: The protective net is a grid structure woven from steel wire rope or nylon rope, with a mesh size of 15-20cm; the traction rope is a steel wire rope.

9. The fall protection device for an emergency stop of a scraper conveyor as described in claim 8, characterized in that: Several connecting buckles are spaced apart on the four edges of the protective net, and the protective net is fixedly connected to the fixing ring and the traction rope through the connecting buckles.

10. The fall protection device for an emergency stop of a scraper conveyor as described in claim 1, characterized in that: It also includes a reset switch, which is electrically connected to the control terminal of the scraper conveyor and can be used to release the stop state of the scraper conveyor.

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