Anti-collision protection device for pull rope

Abstract

The utility model relates to an anti-collision protection device for a pull rope, and relates to the technical field of port equipment. The pull rope anti-collision protection device comprises a support, a code disc, a fixed pulley, a pull rope, a tension spring and a photoelectric switch, the support comprises a first fixing plate and a second fixing plate which are oppositely arranged in parallel, the fixed pulley is arranged on one side of the code disc, and the code disc and the fixed pulley are rotatably arranged between the first fixing plate and the second fixing plate. The photoelectric switch is arranged on the first fixing plate or the second fixing plate and detects the coded disc, the pull rope bypasses the fixed pulley, one end of the pull rope is connected with the tension spring, and the end, away from the pull rope, of the tension spring is fixed. The pull rope anti-collision protection device is simple in structure, high in reliability, small in influence of operation environment and capable of accurately sending out anti-collision early warning signals, the pull rope can automatically reset under the action of the tension spring after being touched, manual reset is not needed, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of port equipment, and particularly relates to a pull rope anti-collision protection device. Background Art

[0002] At present, mobile conveying equipment such as ship loaders, ship unloaders, stacker reclaimers, etc. are widely used in port bulk cargo transportation. During the operation of these equipment, large components such as the overall or cantilever steel structures need to move frequently in space to complete the transportation of bulk cargo materials. During the movement of the equipment and components, there is a risk of collision with other equipment, components, and materials. Once a collision occurs, the overall equipment or some components will be severely damaged, resulting in production suspension, property losses, and even personal injuries.

[0003] To prevent such accidental collision accidents, non-contact inductive switches such as radar, laser, and ultrasonic are usually used. When other objects enter the signal coverage area, an anti-collision warning signal is sent to stop the equipment from moving and avoid collisions. For example, the Chinese patent with the publication number CN209554386U discloses an anti-collision alarm system for the trolley traveling mechanism of a ship loader, which uses a radar sensor or an ultrasonic sensor as a ranging sensor to achieve the anti-collision function.

[0004] The disadvantage of such a ranging sensor is that during the bulk cargo handling process, a large number of particulate matters are likely to float in the air. When there are a large number of particles in the air, it will have an adverse effect on the normal operation of the radar sensor or the ultrasonic sensor, and it is difficult to accurately master the detection range of the radar sensor or the ultrasonic sensor, which is prone to false operations. Summary of the Utility Model

[0005] The utility model provides a pull rope anti-collision protection device with high reliability, little affected by the operating environment, and capable of accurately sending anti-collision warning signals.

[0006] The utility model provides a pull rope anti-collision protection device, which includes a bracket, a code disk, a fixed pulley, a pull rope, a tension spring, and a photoelectric switch. The bracket includes a first fixing plate and a second fixing plate that are opposite and parallel to each other. The fixed pulley is arranged on one side of the code disk. The code disk and the fixed pulley are rotatably arranged between the first fixing plate and the second fixing plate. The photoelectric switch is arranged on the first fixing plate or the second fixing plate and detects the code disk. The pull rope bypasses the fixed pulley. One end of the pull rope is connected to the tension spring, and the end of the tension spring away from the pull rope is fixed.

[0007] In one embodiment, the code disk includes a disk body and a plurality of convex teeth, and the plurality of convex teeth are arranged at equal intervals along the circumferential direction of the disk body.

[0008] In one embodiment, a groove is provided on the photoelectric switch, and the edge of the code disk is located in the groove.

[0009] In one embodiment, a plurality of through holes are provided on the disk body, and a plurality of threaded holes are provided on one side of the fixed pulley. The fixed pulley is fixed to the disk body by screws passing through the through holes and screwed into the threaded holes.

[0010] In one embodiment, the plurality of through holes are distributed on the same circumference and are equally spaced.

[0011] In one embodiment, the fixed pulley and the code disk are fixed to the bracket by a rotating shaft.

[0012] In one embodiment, bearings are provided on both the first fixing plate and the second fixing plate, and the rotating shaft is arranged on the bearings.

[0013] In one embodiment, the rotation axis of the fixed pulley coincides with the rotation axis of the code disk.

[0014] In one embodiment, a mounting seat is provided on the first fixing plate, and the photoelectric switch is detachably connected to the mounting seat.

[0015] In one embodiment, the pulling rope is a steel wire rope.

[0016] Compared with the prior art, the advantages of the present utility model are as follows: The pulling rope is tensioned by a tension spring and is arranged at a suitable position on one side of the protected part. When an object approaches the protected component, it first touches the pulling rope. The pulling rope acts within the elastic deformation stroke of the tension spring, causing the fixed pulley wound with the pulling rope to rotate, and driving the code disk fixed on one side of the fixed pulley to rotate together. The rotation of the code disk causes the photoelectric switch to emit a switching signal, stopping the movement of the protected component and achieving the protection purpose. The pulling rope anti-collision protection device of the present utility model has a simple structure, high reliability, little influence from the working environment, can accurately emit anti-collision warning signals, and can automatically reset under the action of the tension spring after the pulling rope is touched, without manual reset, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, the present utility model will be described in more detail based on embodiments and with reference to the drawings.

[0018] Figure 1 is a front structural schematic diagram of the pulling rope anti-collision protection device in the embodiment of the present utility model;

[0019] Figure 2 is a top structural schematic diagram of the pulling rope anti-collision protection device in the embodiment of the present utility model;

[0020] Figure 3It is a schematic front view structure diagram of the disc body in the embodiment of the present utility model;

[0021] Figure 4 It is a schematic front view structure diagram of the fixed pulley in the embodiment of the present utility model.

[0022] Reference numerals:

[0023] 1. Bracket; 11. First fixing plate; 12. Second fixing plate; 13. Adjusting hole; 2. Code disc; 21. Disc body; 211. Through hole; 22. Convex tooth; 3. Fixed pulley; 31. Threaded hole; 4. Pulling rope; 5. Pulling spring; 6. Photoelectric switch; 61. Groove; 7. Rotating shaft; 8. Bearing; 9. Mounting seat. Specific embodiments

[0024] The present utility model will be further described below with reference to the accompanying drawings.

[0025] As Figure 1 and Figure 2 shown, the pulling rope anti-collision protection device of an embodiment of the present utility model includes a bracket 1, a code disc 2, a fixed pulley 3, a pulling rope 4, a pulling spring 5 and a photoelectric switch 6. The bracket 1 includes a first fixing plate 11 and a second fixing plate 12 that are opposite and parallel to each other. The fixed pulley 3 is arranged on one side of the code disc 2. The code disc 2 and the fixed pulley 3 are rotatably arranged between the first fixing plate 11 and the second fixing plate 12. The photoelectric switch 6 is arranged on the first fixing plate 11 and detects the code disc 2. The pulling rope 4 bypasses the fixed pulley 3. One end of the pulling rope 4 is connected to the pulling spring 5, and the end of the pulling spring 5 away from the pulling rope 4 is fixed.

[0026] The pulling rope 4 is tensioned by the pulling spring 5 and is arranged at a suitable position on one side of the protected part. When an object approaches the protected component, it first touches the pulling rope 4. The pulling rope 4 acts within the elastic deformation stroke of the pulling spring 5 to cause the fixed pulley 3 wound by the pulling rope 4 to rotate, and drives the code disc 2 fixed on one side of the fixed pulley 3 to rotate together. The rotation of the code disc 2 causes the photoelectric switch 6 to emit a switching signal, so that the protected component stops moving, achieving the protection purpose. The pulling rope anti-collision protection device of this embodiment has a simple structure, high reliability, little influence from the working environment, can accurately emit anti-collision warning signals, and the pulling rope 4 can automatically reset under the action of the pulling spring 5 after being touched, without manual reset, and is convenient to use.

[0027] As Figure 1As shown in the figure, the code disk 2 includes a disk body 21 and a plurality of convex teeth 22, and the plurality of convex teeth 22 are arranged at equal intervals along the circumferential direction of the disk body 21. The photoelectric switch 6 is a kind of sensor. It converts the change in the intensity of light between the transmitting end and the receiving end into a change in current to achieve the purpose of detection. It uses the occlusion or reflection of the light beam by the detected object, and the synchronous circuit turns on the circuit to detect the presence or absence of an object. The convex teeth 22 can block the light beam of the photoelectric switch 6, while the gap between adjacent convex teeth 22 allows the light beam to pass through. When the code disk 2 rotates, the state of the photoelectric switch 6 also changes, thereby realizing the monitoring of the state of the code disk 2.

[0028] As Figure 2 shown, specifically, a groove 61 is provided on the photoelectric switch 6, and the edge of the code disk 2 is located in the groove 61.

[0029] As Figure 3 and Figure 4 shown, a plurality of through holes 211 are provided on the disk body 21, and a plurality of threaded holes 31 are provided on one side of the fixed pulley 3. The fixed pulley 3 is fixed on the disk body 21 by screws (not shown in the figure) passing through the through holes 211 and screwed into the threaded holes 31. The connection method between the fixed pulley 3 and the code disk 2 is simple and reliable and convenient for disassembly, and can realize the synchronous rotation of the two.

[0030] Furthermore, the plurality of through holes 211 are distributed on the same circumference and arranged at equal intervals, so that the center of gravity of the code disk 2 after opening holes does not shift significantly, and the code disk 2 can maintain stability when rotating. Correspondingly, the plurality of threaded holes 31 are also distributed on the same circumference and arranged at equal intervals, so that the center of gravity of the fixed pulley 3 after opening holes does not shift significantly, and the fixed pulley 3 can maintain stability when rotating.

[0031] As Figure 2 shown, the fixed pulley 3 and the code disk 2 are fixed on the bracket 1 through a rotating shaft 7, so that the fixed pulley 3 and the code disk 2 can rotate.

[0032] Furthermore, bearings 8 are provided on both the first fixing plate 11 and the second fixing plate 12, and the rotating shaft 7 is arranged on the bearings 8. By providing the bearings 8, the resistance when the fixed pulley 3 and the code disk 2 rotate is reduced, and the sensitivity of the device is improved.

[0033] In this embodiment, the rotation axis 7 line of the fixed pulley 3 coincides with the rotation axis 7 line of the code disk 2 to ensure the stability when the fixed pulley 3 and the code disk 2 rotate.

[0034] As Figure 1 and Figure 2As shown in the figure, a mounting seat 9 is provided on the first fixing plate 11, and the photoelectric switch 6 is threadedly connected to the mounting seat 9. An adjustment hole 13 is also formed on the first fixing plate 11, and the fixing position of the mounting seat 9 can be selected in the adjustment hole 13 to finely adjust the mounting position of the photoelectric switch 6, ensuring that the photoelectric switch 6 can function properly.

[0035] In this embodiment, the pull rope 4 is a steel wire rope, which can withstand a large tensile force and is not easily broken, can adapt to a relatively harsh working environment, and has high reliability.

[0036] The pull rope 4 is made of a thinner steel wire rope, and the tension spring 5 is made of a high-elasticity spring, so that the pull rope 4 will not bend and sag due to gravity, and the pull rope 4 is in a taut state.

[0037] One end of the pull rope 4 away from the tension spring 5 is fixed to a structure (not shown in the figure). When the structure supporting the pull rope 4 is deformed by impact, resulting in the slackening of the pull rope 4 or the breakage of the pull rope 4, the tension spring 5 can still pull the whole or part of the pull rope 4 to rotate the fixed pulley 3 and the code disc 2, thereby triggering the action of the photoelectric switch 6.

[0038] Although the present invention has been described with reference to the preferred embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pull rope anti-collision protection device, characterized in that: It includes a bracket, a code disk, a fixed pulley, a pull rope, a tension spring and a photoelectric switch. The bracket includes a first fixed plate and a second fixed plate that are arranged opposite to and in parallel. The fixed pulley is arranged on one side of the code disk. The code disk and the fixed pulley are rotatably arranged between the first fixed plate and the second fixed plate. The photoelectric switch is arranged on the first fixed plate or the second fixed plate and detects the code disk. The pull rope passes around the fixed pulley, one end of the pull rope is connected to the tension spring, and the tension spring is fixed away from one end of the pull rope.

2. The pull rope anti-collision protection device according to claim 1, characterized in that: The code disc comprises a disc body and a plurality of protruding teeth, wherein the plurality of protruding teeth are arranged at equal intervals along the circumference of the disc body.

3. The pull rope anti-collision protection device according to claim 2, characterized in that: The photoelectric switch is provided with a groove, and the edge of the code disk is located in the groove.

4. The pull rope anti-collision protection device according to claim 2, characterized in that: The disc body is provided with a plurality of through holes, a side of the fixed pulley is provided with a plurality of threaded holes, and the fixed pulley is fixed to the disc body by screws passing through the through holes and screwed into the threaded holes.

5. The pull cord anti-collision protection device according to claim 4, characterized in that: The plurality of through holes are distributed on the same circumference and arranged at equal intervals.

6. The pull cord anti-collision protection device according to claim 1, characterized in that: The fixed pulley and the code disc are fixed on the bracket via a rotating shaft.

7. The pull cord anti-collision protection device according to claim 6, characterized in that: The first fixing plate and the second fixing plate are both provided with bearings, and the rotating shaft is arranged on the bearings.

8. The pull cord anti-collision protection device according to claim 1, characterized in that: The rotation axis of the fixed pulley coincides with the rotation axis of the code disc.

9. The pull cord anti-collision protection device according to claim 1, characterized in that: The first fixing plate is provided with a mounting seat, and the photoelectric switch is detachably connected to the mounting seat.

10. The pull cord anti-collision protection device according to claim 9, characterized in that: The pull rope is a steel wire rope.

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