Coke oven maintenance platform anti-collision safety guardrail

Abstract

The utility model discloses an anti-collision safety guardrail for a coke oven maintenance platform. The anti-collision safety guardrail comprises a lifting guardrail assembly and an anti-collision assembly, the anti-collision assembly comprises a laser range finder arranged on the maintenance platform, a displacement sensor arranged on the lifting type guardrail assembly, a PLC and an alarm. The signal output ends of the laser range finder and the displacement sensor are both in signal connection with the signal input end of the PLC, and the signal output end of the PLC is respectively in signal connection with the signal input ends of the alarm and the driving device of the coke pusher. The coke pusher maintenance platform has the advantages that the distance between the coke pusher and the maintenance platform and the lifting state of the guardrail are detected through the laser range finder and the displacement sensor respectively, and when the states of the coke pusher and the guardrail are not matched, the PLC triggers the alarm to give an alarm in time to remind workers to check and control starting and stopping of the coke pusher, so that safety accidents are avoided, and meanwhile the safety of the coke pusher is guaranteed. And the safety guardrail is prevented from being damaged due to collision with the coke pusher.

Description

Technical fields:

[0002] This utility model relates to a safety railing, and more particularly to a collision-proof safety railing for a coke oven maintenance platform. Background technology:

[0004] In the daily maintenance of coke ovens, the maintenance platform serves as the operating area for workers. Safety railings are important facilities to ensure the safety of maintenance personnel. Their main function is to prevent maintenance personnel from falling accidentally, while also providing a certain degree of protection and isolation for passing equipment and tools.

[0005] Currently, most safety railings used on coke oven maintenance platforms are fixed structures. These railings are primarily designed to prevent falls, but they are inadequate in dealing with impacts. The coke oven maintenance environment is complex, with large maintenance equipment moving frequently, leading to frequent collisions between equipment and railings during operations. Existing fixed railings cannot effectively cushion impacts, easily causing deformation and damage, and even loosening and collapse of the entire railing structure. This not only increases maintenance costs but also seriously threatens the lives of maintenance personnel. Furthermore, traditional railings lack clear warning signs after a collision, making it difficult to quickly attract the attention of workers and enabling timely and effective countermeasures, potentially leading to secondary accidents. Therefore, there is an urgent need to develop a safety railing for coke oven maintenance platforms that can effectively prevent collisions and has a collision warning function to improve the safety of coke oven maintenance operations. Utility Model Content:

[0007] In order to solve the above problems, the purpose of this utility model is to provide a collision-proof safety railing for a coke oven maintenance platform.

[0008] This utility model is implemented by the following technical solution:

[0009] A safety guardrail for a coke oven maintenance platform, comprising a lifting guardrail assembly and a collision prevention assembly;

[0010] The anti-collision assembly includes a laser rangefinder mounted on the maintenance platform, a displacement sensor mounted on the lifting guardrail assembly, a PLC controller, and an alarm. The signal output terminals of the laser rangefinder and the displacement sensor are both connected to the signal input terminal of the PLC controller. The signal output terminal of the PLC controller is connected to the alarm and the signal input terminal of the drive device of the coke pusher, respectively.

[0011] Furthermore, the anti-collision component also includes a camera mounted on the coke pusher and a display in the control room. The signal output terminal of the camera is connected to the signal input terminal of the PLC controller, and the signal output terminal of the PLC controller is connected to the signal input terminal of the display.

[0012] Furthermore, the lifting guardrail assembly includes a track and at least one set of guardrail assemblies; the track is fixed to the coke pusher car, and the track includes a descending track, a horizontal track and a lifting track connected in sequence;

[0013] Each set of guardrail components includes a vertical slide rail fixed to the side wall below the maintenance platform and a guardrail slidably disposed within the vertical slide rail;

[0014] An upper sliding block and a lower sliding block are slidably arranged from top to bottom in the vertical slide rail, and the upper sliding block and the lower sliding block are connected by a connecting component;

[0015] The axle of the roller that matches the track is fixedly mounted on the lower sliding block;

[0016] The top of the vertically installed middle post is fixedly connected to the guardrail, and the bottom of the middle post is fixedly connected to the upper sliding block.

[0017] Furthermore, the length of the horizontal track is not less than the length of the coke pusher.

[0018] Furthermore, both the descent track and the lifting track have open ends.

[0019] Furthermore, the connecting assembly includes a connecting rod, the two ends of which are fixedly connected to the upper sliding block and the lower sliding block, respectively.

[0020] Furthermore, the connecting assembly also includes a self-locking assembly, which includes a hinge frame and a tension spring. The hinge frame includes four sequentially hinged connecting rods and is an axisymmetric structure about the vertical direction. One end of the tension spring is connected to the hinge point at the top of the hinge frame, and the other end of the tension spring is connected to the hinge point at the bottom of the hinge frame.

[0021] The top end of the connecting rod is fixedly connected to the upper sliding block, the bottom end of the connecting rod is connected to the hinge point at the top end of the hinge frame, and the hinge point at the bottom end of the hinge frame is connected to the lower sliding block.

[0022] Furthermore, two limiting grooves are symmetrically provided on the two opposite inner walls of the vertical slide; the longitudinal section of the limiting groove is an isosceles triangle, and the base of the isosceles triangle is parallel to the length direction of the vertical slide; the two hinge points in the middle of the hinge frame are respectively slidably disposed in the two limiting grooves.

[0023] Furthermore, the displacement sensor is a pull rope displacement sensor, which is located at the bottom of the vertical slide, and a pull rope fixer connected to the pull rope of the pull rope displacement sensor is installed on the middle upright.

[0024] Advantages of this utility model:

[0025] The distance between the coke pusher and the maintenance platform, as well as the lifting status of the guardrail, are detected by a laser rangefinder and a displacement sensor, respectively. When the status of the coke pusher and the guardrail do not match, the PLC controller triggers an alarm to issue an alarm in a timely manner, reminding the staff to check and control the start and stop of the coke pusher. This not only avoids safety accidents but also ensures that the safety guardrail will not be damaged due to collision with the coke pusher, thus playing a collision prevention role and ensuring safe operation.

[0026] Meanwhile, as the coke pusher car moves, the guardrail automatically descends along the track to avoid interference with the pushing rods on the car. When the car stops moving and the coke oven needs maintenance, the guardrail remains in a lowered state. When the car completes its pushing or maintenance work and moves away from the maintenance platform, the guardrail automatically rises along the lifting track, providing reliable protection for maintenance workers. Furthermore, the self-locking mechanism automatically locks the guardrail after it reaches its designated position, preventing it from sliding down in unexpected situations and further enhancing safety.

[0027] This utility model features an ingenious and compact design, is easy to operate, and provides an efficient, safe, and reliable anti-collision safety railing for coke oven maintenance platforms. Attached image description:

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the guardrail assembly in this embodiment;

[0031] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0032] Figure 3 This is a schematic diagram of the connection component in this embodiment;

[0033] Figure 4 This is a schematic diagram of the track structure in this embodiment;

[0034] Figure 5 This is a schematic diagram of the installation of the guardrail components in this embodiment;

[0035] Figure 6 This is a control principle diagram for this embodiment.

[0036] In the diagram: 1. Maintenance platform; 2. Track; 21. Descending track; 22. Horizontal track; 23. Lifting track; 3. Guardrail assembly; 31. Vertical slide; 32. Guardrail; 33. Upper sliding block; 34. Lower sliding block; 35. Connecting assembly; 351. Connecting rod; 352. Hinge frame; 353. Tension spring; 354. Limiting groove; 36. Roller; 37. Intermediate upright; 4. Coke pusher; 51. Laser rangefinder; 52. Displacement sensor; 53. PLC controller; 54. Alarm; 55. Camera; 56. Monitor. Detailed implementation method:

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Example 1:

[0040] like Figure 1-6 The diagram shows a coke oven maintenance platform anti-collision safety railing, which includes a lifting railing assembly and an anti-collision assembly.

[0041] The lifting guardrail assembly includes a track and at least one set of guardrail assemblies 3; the track is fixed on the coke pusher 4, and the track includes a descending track 21, a horizontal track 22 and a lifting track 23 connected in sequence; wherein, the length of the horizontal track 22 is 2 meters longer than the length of the coke pusher 4, and the free ends of the descending track 21 and the lifting track 23 are both open structures.

[0042] Each set of guardrail components 3 includes a vertical slide rail 31 fixed to the side wall below the maintenance platform 1 and a guardrail 32 slidably installed in the vertical slide rail 31;

[0043] An upper sliding block 33 and a lower sliding block 34 are slidably arranged from top to bottom in the vertical slide rail 31. The upper sliding block 33 and the lower sliding block 34 are connected by a connecting assembly 35. The axle of the roller 36 that matches the track is fixedly installed on the lower sliding block 34. The top of the vertically arranged intermediate pole 37 is fixedly connected to the middle of the guardrail 32, and the bottom of the intermediate pole 37 is fixedly connected to the upper sliding block 33.

[0044] In this embodiment, the connecting component 35 includes a connecting rod 351, with both ends of the connecting rod 351 fixedly connected to the upper sliding block 33 and the lower sliding block 34, respectively; it also includes a self-locking component, which includes a hinge frame 352 and a tension spring 353. The hinge frame 352 includes four sequentially hinged connecting rods and is an axisymmetric structure about the vertical direction; one end of the tension spring 353 is connected to the hinge point at the top of the hinge frame 352, and the other end of the tension spring 353 is connected to the hinge point at the bottom of the hinge frame 352; the top of the connecting rod 351 is fixedly connected to the upper sliding block 33, the bottom of the connecting rod 351 is connected to the hinge point at the top of the hinge frame 352, and the hinge point at the bottom of the hinge frame 352 is connected to the lower sliding block 34. Two symmetrical limiting grooves 354 are provided on two opposite inner walls of the vertical slide rail 31, and the two limiting grooves 354 are respectively provided on opposite outer sides of the vertical slide rail 31; the longitudinal section of the limiting groove 354 is an isosceles triangle, and the base of the isosceles triangle is parallel to the length direction of the vertical slide rail 31; the two hinge points in the middle of the hinge frame 352 are respectively slidably disposed in the two limiting grooves 354. In this embodiment, since the wall thickness of the vertical slide rail 31 is small, the limiting grooves 354 are provided on the outside of the vertical slide rail 31.

[0045] The anti-collision assembly includes a laser rangefinder 51 mounted on the maintenance platform 1, a displacement sensor 52 mounted on the lifting guardrail assembly, a PLC controller 53, and an alarm 54. The signal output terminals of the laser rangefinder 51 and the displacement sensor 52 are both connected to the signal input terminal of the PLC controller 53. The signal output terminal of the PLC controller 53 is connected to the signal input terminal of the alarm 54 and the drive device of the coke pusher 4, respectively.

[0046] The anti-collision assembly also includes a camera 55 mounted on the coke pusher 4 and a display 56 located in the control room. The signal output terminal of the camera 55 is connected to the signal input terminal of the PLC controller 53, and the signal output terminal of the PLC controller 53 is connected to the signal input terminal of the display 56.

[0047] In this embodiment, the displacement sensor 52 is a pull rope displacement sensor. The pull rope displacement sensor is located at the bottom of the vertical slide 31, and a pull rope fixer connected to the pull rope of the pull rope displacement sensor is installed on the middle upright 37.

[0048] Instructions for use:

[0049] When using this embodiment as a safety railing for the coke-side maintenance platform 1, firstly, a track is fixed on the side of the coke pusher 4 closest to the maintenance platform 1, and the front and rear ends of the horizontal track 22 are aligned with the front and rear ends of the coke pusher 4, so that the descending track 21 is located in front of the coke pusher 4 and the lifting track 23 is located behind the coke pusher 4. Since the self-locking component can limit the movement of the railing component 3 when the coke pusher 4 is not close to the maintenance platform 1, that is, when the track on the coke pusher 4 does not interact with the railing assembly 3, the railing assembly 3 is kept in a raised state, thus protecting the maintenance platform 1. Therefore, when installing the track, the height of the free end of the descending track 21 should match the height of the roller 36 of the railing assembly 3 in the raised state. To facilitate the entry of the roller 36 into the descending track 21, the free end of the descending track 21 is set as an open structure.

[0050] As the coke pusher 4 moves forward and approaches the maintenance platform 1, the roller 36 first enters the descending track 21. With the coke pusher 4 continuing to move forward, limited by the height of the descending track 21, the roller 36 can only drive the lower sliding block 34 to move downwards along the descending track 21 within the vertical slide rail 31, thereby driving the upper sliding block 33 to also move downwards. The downward movement of the upper sliding block 33 drives the intermediate upright 37 downwards, which in turn causes the guardrail 32 to move downwards. In this embodiment, by adjusting the length or tilt angle of the descending track 21, the guardrail 32 can be positioned at a height that does not obstruct the movement of the coke pusher 4 when the roller 36 reaches the end of the descending track 21; thus, the normal coke pushing operation of the coke pusher 4 can be guaranteed.

[0051] Afterwards, the coke pusher 4 continues to move forward and arrives near the maintenance platform 1, where it begins the coke pushing operation. During this process, since the roller 36 is within the horizontal track 22, that is, at the same height as the end of the descending track 21, the guardrail 32 is always in a descending state when the roller 36 is within the horizontal track 22, ensuring the normal operation of the coke pusher 4.

[0052] As the coke pusher 4 continues to move forward, and the roller 36 moves into the lifting track 23, the roller 36 moves upward in the opposite direction to the movement of the roller 36 in the lowering track 21. This causes the lower sliding block 34 to move upward as well. The upward movement of the lower sliding block 34 further causes the upper sliding block 33 to move upward. Under the action of the middle upright 37, the guardrail 32 rotates upward, eventually reaching the raised state, thus achieving the effect of protecting workers' safety during operation.

[0053] In this embodiment, when the coke pusher 4 moves away from the maintenance platform 1, the two hinge points in the middle of the hinge frame 352 are restricted within the two limiting grooves 356 by the self-locking component, preventing movement and thus forming a self-lock. This provides limiting protection for the upper sliding block 33 and the lower sliding block 34, preventing them from moving up and down and ensuring that the safety railing does not descend. Only when the track forcibly applies external force to the roller 36 will the two hinge points in the middle of the hinge frame 352 be forcibly displaced, thereby causing the railing 32 to descend.

[0054] In this embodiment, by setting tracks at different angles, and with the track limiting the rollers 36, the safety railing can be raised and lowered without any power drive when the coke pusher 4 moves. When the coke pusher 4 needs to approach the maintenance platform 1 on the coke oven side for operation, the safety railing will automatically lower to ensure the normal operation of the coke pusher 4; when the coke pusher 4 leaves, the safety railing will automatically rise, which can protect the safety of the workers and greatly reduce the risk of falling. The entire structure adopts a pure mechanical drive principle, without the need for a power drive mechanism, and has high reliability, thereby improving the protective effect.

[0055] To improve the anti-collision effect, an anti-collision component is set up in this embodiment. A laser rangefinder 51 mounted on the maintenance platform 1 can detect the position H1 of the coke pusher 4 from the maintenance platform 1 in real time; a displacement sensor 52 can detect the vertical displacement H2 of the guardrail 32 in real time. H1 and H2 are uploaded to the PLC controller 53. Based on H1, the positional relationship between the coke pusher 4 and the maintenance platform 1 can be determined; based on H2, the lifting / lowering state of the guardrail 32 can be determined. When the two states do not match, if it is determined that the coke pusher 4 is moving away from the maintenance platform 1 while the guardrail 32 is in a lowering state, it indicates an abnormality, and the PLC controller 53 triggers an alarm. The alarm 54 sounds, reminding staff to check the situation promptly to prevent maintenance personnel from falling from the maintenance platform 1 and causing a safety accident. If it is determined that the coke pusher 4 is close to the maintenance platform 1, but the guardrail 32 is in the raised state, it indicates an abnormality. The PLC controller 53 triggers the alarm 54 to sound, reminding staff to check the situation promptly and controlling the drive device of the coke pusher 4 to stop the coke pusher 4, ensuring that the safety guardrail 32 is not damaged due to a collision with the coke pusher 4. When the two states match, that is, when the guardrail 32 is in the lowered state, the PLC controller 53 controls the drive device of the coke pusher 4 to restart the coke pusher 4. In this embodiment, by setting up a camera 55 and a display 56, the on-duty personnel can check the situation at multiple locations in the central control room without frequently traveling to the site, which can save manpower and improve work efficiency.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. The anti-collision safety railing in this embodiment can serve as either a safety railing on the coke side or a safety railing on the machine side; the coke car in this embodiment can be either a coke pusher car or a coke catcher car. Any modifications, equivalent substitutions, or improvements made to the guardrail assembly 3 and the track 2, as long as their structure and working principle are within the spirit and principles of this utility model, should be included within the protection scope of this utility model.

Claims

1. A collision-resistant safety railing for a coke oven maintenance platform, characterized in that, Including retractable guardrail components and anti-collision components; The anti-collision assembly includes a laser rangefinder mounted on the maintenance platform, a displacement sensor mounted on the lifting guardrail assembly, a PLC controller, and an alarm. The signal output terminals of the laser rangefinder and the displacement sensor are both connected to the signal input terminal of the PLC controller. The signal output terminal of the PLC controller is connected to the alarm and the signal input terminal of the drive device of the coke pusher, respectively.

2. The anti-collision safety railing for a coke oven maintenance platform according to claim 1, characterized in that, The anti-collision assembly also includes a camera mounted on the coke pusher and a display in the control room. The signal output terminal of the camera is connected to the signal input terminal of the PLC controller, and the signal output terminal of the PLC controller is connected to the signal input terminal of the display.

3. The anti-collision safety railing for a coke oven maintenance platform according to claim 1, characterized in that, The lifting guardrail assembly includes a track and at least one set of guardrail assemblies; the track is fixed to the coke pusher car, and the track includes a descending track, a horizontal track and a lifting track connected in sequence; Each set of guardrail components includes a vertical slide rail fixed to the side wall below the maintenance platform and a guardrail slidably disposed within the vertical slide rail; An upper sliding block and a lower sliding block are slidably arranged from top to bottom in the vertical slide rail, and the upper sliding block and the lower sliding block are connected by a connecting component; The axle of the roller that matches the track is fixedly mounted on the lower sliding block; The top of the vertically installed middle post is fixedly connected to the guardrail, and the bottom of the middle post is fixedly connected to the upper sliding block.

4. The anti-collision safety railing for a coke oven maintenance platform according to claim 3, characterized in that, The length of the horizontal track is not less than the length of the coke pusher.

5. The anti-collision safety railing for a coke oven maintenance platform according to claim 3, characterized in that, Both the descending track and the ascending track have open ends.

6. The anti-collision safety railing for a coke oven maintenance platform according to claim 3, characterized in that, The connecting assembly includes a connecting rod, the two ends of which are fixedly connected to the upper sliding block and the lower sliding block, respectively.

7. The anti-collision safety railing for a coke oven maintenance platform according to claim 6, characterized in that, The connecting assembly further includes a self-locking assembly, which includes a hinge frame and a tension spring. The hinge frame includes four sequentially hinged connecting rods and is an axisymmetric structure about the vertical direction. One end of the tension spring is connected to the hinge point at the top of the hinge frame, and the other end of the tension spring is connected to the hinge point at the bottom of the hinge frame. The top end of the connecting rod is fixedly connected to the upper sliding block, the bottom end of the connecting rod is connected to the hinge point at the top end of the hinge frame, and the hinge point at the bottom end of the hinge frame is connected to the lower sliding block.

8. The anti-collision safety railing for a coke oven maintenance platform according to claim 7, characterized in that, Two limiting grooves are symmetrically provided on two opposite inner walls of the vertical slide; the longitudinal section of the limiting groove is an isosceles triangle, and the base of the isosceles triangle is parallel to the length direction of the vertical slide; the two hinge points in the middle of the hinge frame are respectively slidably disposed in the two limiting grooves.

9. The anti-collision safety railing for a coke oven maintenance platform according to claim 3, characterized in that, The displacement sensor is a pull rope displacement sensor, which is located at the bottom of the vertical slide. A pull rope fixer connected to the pull rope of the pull rope displacement sensor is installed on the middle upright.

Images