A flexible anti-collision protection device for gantry crane legs

Abstract

This utility model discloses a flexible anti-collision protection device for gantry crane legs, relating to the field of gantry crane technology. The utility model includes a movable base, with the gantry legs fixedly connected to the top outer wall of the movable base. By incorporating rubber buffer blocks and positioning posts, the rubber buffer blocks are inserted into the positioning box. The movement of the rubber buffer blocks pushes the connecting block to move, and the positioning post pushes the positioning plate inside the connecting block. The positioning plate pulls the connecting rod, causing it to rotate the limiting rod around the inside of the connecting block and push the first locking block to insert into the positioning post. This achieves a rapid limiting effect by inserting the rubber buffer block into the positioning box and then having multiple limiting rods push the locking block into the positioning post. This prevents situations where strong light, dust, or other factors might obstruct the laser beam, causing false alarms in the light curtain and potentially leading to direct collisions between the gantry legs and obstacles, resulting in leg deformation.

Description

Technical Field

[0001] This utility model belongs to the field of gantry crane technology, and in particular relates to a flexible anti-collision protection device for gantry crane legs. Background Technology

[0002] According to the published patent CN204022335U, the laser anti-collision protection device for the flexible outriggers of a gantry crane includes multiple laser light curtain emitting devices installed on the outer side of the upper platform of the flexible outrigger and multiple matching receiving devices arranged on the outer side of the lower crossbeam platform of the flexible outrigger. A sound and light alarm is installed in the operator's cab of the gantry crane. A relay is connected to the output terminal of the receiving device, and the contacts of the relay are connected to the input terminal of the sound and light alarm. The device is sensitive and accurate in its action, easy to install and use, and improves the safety of the gantry crane when lifting large objects, increases the safety of crane operation, and reduces the probability of accidents. However, it still has the following shortcomings:

[0003] After completion, the above equipment simply detects the distance between various parts and objects through the laser light curtain transmitter and activates the sound and light alarm after collecting the signal with the receiver. However, factors such as strong light and dust may block the laser beam, causing the light curtain to trigger a false alarm. This may cause the door leg to collide directly with the obstacle, resulting in door leg deformation. Utility Model Content

[0004] The purpose of this utility model is to provide a flexible anti-collision protection device for gantry crane legs. Through the protection mechanism and the limiting mechanism, it solves the problem that factors such as strong light and dust may block the laser beam, causing false alarms in the light curtain, which may cause the legs to collide directly with obstacles and deform.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a flexible anti-collision protection device for the legs of a gantry crane, including a movable base, on the top outer wall of which the gantry crane legs are fixedly connected;

[0007] The outer wall of the movable base is provided with a protective mechanism, which includes a positioning box. The outer wall of the positioning box is fixedly connected to the outer wall of the movable base. Several laser rangefinders are fixedly connected to the inner wall of the positioning box. A rubber buffer block is inserted into the inner wall of the positioning box. A connecting block is fixedly connected to the outer wall of the rubber buffer block. A positioning post is slidably connected to the inner wall of the connecting block. A damping spring is fixedly connected to the inner wall of the connecting block. A positioning plate is fixedly connected to the outer wall of the end of the damping spring away from the connecting block. Several connecting rods are rotatably connected to the inner wall of the positioning plate. A limit rod is rotatably connected to the outer wall of the end of the connecting rod away from the positioning plate. A first locking block is fixedly connected to the outer wall of the limit rod. A limit mechanism is provided on the inner wall of the positioning box.

[0008] Furthermore, the inner wall of the first locking block is provided with a locking groove, and a plurality of pressure springs are fixedly connected to the inner wall of the positioning post. The outer wall of the end of the pressure spring away from the positioning post is fixedly connected to a second locking block.

[0009] Furthermore, the outer wall of the positioning post is fixedly connected to the inner wall of the positioning box, the outer wall of the limiting rod is rotatably connected to the inner wall of the connecting block, the outer wall of the second locking block is inserted into the inner wall of the locking groove, and the outer wall of the second locking block is engaged with the inner wall of the first locking block.

[0010] Furthermore, the limiting mechanism includes a motor, the outer wall of which is fixedly connected to the inner wall of the positioning box, the inner wall of the positioning box is provided with a sliding groove, the output end of the motor is fixedly connected to a connecting shaft through a coupling, the outer wall of the connecting shaft is rotatably connected to the inner wall of the positioning box, a first positioning rod is fixedly connected to the outer wall of the connecting shaft, and a plurality of first support rods are fixedly connected to the outer wall of the first positioning rod.

[0011] Furthermore, a second positioning rod is rotatably connected to the outer wall of the end of the first support rod away from the first positioning rod, a second support rod is fixedly connected to the outer wall of the second positioning rod, the outer wall of the second positioning rod is slidably connected to the inner wall of the slide groove, and a limit plate is fixedly connected to the bottom outer wall of the second support rod, the outer wall of the limit plate is slidably connected to the inner wall of the positioning box.

[0012] Furthermore, a second fixing block is fixedly connected to the outer wall of the limiting plate, a second connecting rod is rotatably connected to the outer wall of the second fixing block, a positioning shaft is rotatably connected to the outer wall of the end of the second connecting rod away from the second fixing block, and a first connecting rod is rotatably connected to the outer wall of the positioning shaft.

[0013] Furthermore, a first fixing block is rotatably connected to the outer wall of the end of the first connecting rod away from the positioning axis, the outer wall of the first fixing block is fixedly connected to the inner wall of the positioning box, and a plurality of dampers are fixedly connected to the outer wall of the limiting plate.

[0014] Furthermore, a spring is fixedly connected to the outer wall of the damper, the outer wall of the damper is fixedly connected to the inner wall of the positioning box, and the outer wall of the spring is fixedly connected to the outer wall of the limiting plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model incorporates a rubber buffer block and a positioning post. The rubber buffer block is inserted into the positioning box, and its movement pushes the connecting block to move. The positioning post then pushes the positioning plate inside the connecting block, which in turn pulls the connecting rod, causing the limiting rod to rotate around the inside of the connecting block and push the first locking block to insert into the positioning post. This achieves a rapid positioning effect by inserting the rubber buffer block into the positioning box and having multiple limiting rods push the locking block into the positioning post. This prevents situations where strong light, dust, or other factors might block the laser beam, causing false alarms in the light curtain and potentially causing the door leg to collide directly with obstacles, resulting in door leg deformation.

[0017] 2. This utility model incorporates a limiting plate and springs. A connecting shaft drives the first positioning rod to rotate inside the positioning box, which in turn moves the first support rod. The first support rod pulls the second positioning rod, which in turn moves the second support rod. A sliding groove restricts the second support rod's movement within a certain range and direction, allowing it to horizontally push the limiting plate. When the limiting plate is impacted, it compresses the dampers and springs on the rear side. The interaction of the dampers and springs absorbs the pressure and vibration on the limiting plate, effectively restricting the position of the rubber buffer block. This achieves the goal of clamping and limiting the rubber buffer block through the movement of the limiting plate, while the four dampers and four springs on the outer side of the limiting plate work together to alleviate and absorb the pressure and vibration when impacted. This prevents the protective part from accidentally shifting or bending due to the impact force generated when the door leg is hit from the side, which could lead to breakage and loss of protective effect.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0020] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the protective structure of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a cross-sectional view of the overall structure of this utility model;

[0024] Figure 5 This is a cross-sectional view of the limiting structure of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Movable seat; 101. Door leg; 2. Protection mechanism; 201. Positioning box; 202. Laser rangefinder; 203. Rubber buffer block; 204. Connecting block; 205. Positioning column; 206. Damping spring; 207. Positioning plate; 208. Connecting rod; 209. Limiting rod; 210. First locking block; 211. Pressure spring; 212. Second locking block; 213. Slot; 3. Limiting mechanism; 301. Motor; 302. Connecting shaft; 303. First positioning rod; 304. First support rod; 305. Second positioning rod; 306. Slide groove; 307. Second support rod; 308. Limiting plate; 309. Damper; 310. Spring; 311. First fixing block; 312. First connecting rod; 313. Positioning shaft; 314. Second connecting rod; 315. Second fixing block. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 As shown, this utility model is a flexible anti-collision protection device for the legs of a gantry crane, including a movable base 1, and a gantry crane leg 101 is fixedly connected to the top outer wall of the movable base 1;

[0029] The outer wall of the movable base 1 is provided with a protective mechanism 2, which includes a positioning box 201. The outer wall of the positioning box 201 is fixedly connected to the outer wall of the movable base 1. Several laser rangefinders 202 are fixedly connected to the inner wall of the positioning box 201. The laser rangefinders 202 can monitor the distance between the movable base 1 and the object in real time. A rubber buffer block 203 is inserted into the inner wall of the positioning box 201. The rubber buffer block 203 physically absorbs and mitigates the impact force generated after the movable base 1 hits the object. A connecting block 204 is fixedly connected to the outer wall of the rubber buffer block 203. A positioning post 205 is slidably connected to the inner wall of the connecting block 204. The positioning post 205 is used to conveniently restrict the movement of the connecting block 204 inside the positioning box 201. A damping spring 206 is fixedly connected to the inner wall of the connecting block 204. A positioning plate 207 is fixedly connected to the outer wall of the end of the damping spring 206 away from the connecting block 204. When the positioning post 205 pushes the positioning plate 207 inside the connecting block 204 to move, it simultaneously presses the connecting rod 208 on the rear side of the positioning plate 207. The elasticity of the connecting rod 208 relieves and absorbs the pressure on the positioning plate 207. Several connecting rods 208 are rotatably connected to the inner wall of the positioning plate 207. The outer wall of the end of the connecting rod 208 away from the positioning plate 207... A rotatable limiting rod 209 is connected. The movement of the positioning plate 207 drives the connecting rod 208 to rotate around the interior of the positioning plate 207, while simultaneously pushing the limiting rod 209 to rotate around the interior of the connecting block 204. A first locking block 210 is fixedly connected to the outer wall of the limiting rod 209. A limiting mechanism 3 is provided on the inner wall of the positioning box 201. A locking groove 213 is opened on the inner wall of the first locking block 210. The rotation of the limiting rod 209 pushes the first locking block 210 to insert it into the interior of the positioning post 205. Several pressure springs 211 are fixedly connected to the inner wall of the positioning post 205. The pressure springs 211 are far from the fixed position. A second locking block 212 is fixedly connected to the outer wall of one end of the positioning post 205. The movement of the first locking block 210 pushes the second locking block 212 to move, while squeezing the pressure spring 211 on the rear side. The elasticity of the pressure spring 211 pushes the second locking block 212 back to its original position and locks the first locking block 210 inside the positioning post 205. The outer wall of the positioning post 205 is fixedly connected to the inner wall of the positioning box 201. The outer wall of the limiting rod 209 is rotatably connected to the inner wall of the connecting block 204. The outer wall of the second locking block 212 is inserted into the inner wall of the slot 213. The outer wall of the second locking block 212 is locked into the inner wall of the first locking block 210.

[0030] The limiting mechanism 3 includes a motor 301, a starter motor 301, and an outer wall of the motor 301 fixedly connected to the inner wall of the positioning box 201. The inner wall of the positioning box 201 has a sliding groove 306. The output end of the motor 301 is fixedly connected to a connecting shaft 302 via a coupling. The outer wall of the connecting shaft 302 is rotatably connected to the inner wall of the positioning box 201. A first positioning rod 303 is fixedly connected to the outer wall of the connecting shaft 302. When the motor 301 drives the connecting shaft 302 to rotate, it simultaneously drives the first positioning rod 303 to rotate inside the positioning box 201. Several first support rods 304 are fixedly connected to the outer wall of the first positioning rod 303. The outer wall of the first support rod 304 furthest from the first positioning rod 303 rotates... A second positioning rod 305 is movably connected, and a second support rod 307 is fixedly connected to the outer wall of the second positioning rod 305. The outer wall of the second positioning rod 305 is slidably connected to the inner wall of the slide groove 306. The rotation of the first support rod 304 pulls the second positioning rod 305, causing it to move the second support rod 307. At the same time, the slide groove 306 restricts the movement range of the second support rod 307. A limit plate 308 is fixedly connected to the bottom outer wall of the second support rod 307. The outer wall of the limit plate 308 is slidably connected to the inner wall of the positioning box 201. The movement of the second support rod 307 causes the limit plate 308 to contact the outer side of the rubber buffer block 203, and the limit plate 308 clamps the rubber buffer block 203.

[0031] A second fixing block 315 is fixedly connected to the outer wall of the limiting plate 308. A second connecting rod 314 is rotatably connected to the outer wall of the second fixing block 315. During the movement of the limiting plate 308, the second fixing block 315 is moved, and the second connecting rod 314 is rotated around the outer side of the second fixing block 315. A positioning shaft 313 is rotatably connected to the outer wall of the end of the second connecting rod 314 away from the second fixing block 315. A first connecting rod 312 is rotatably connected to the outer wall of the positioning shaft 313. A first fixing block 311 is rotatably connected to the outer wall of the end of the first connecting rod 312 away from the positioning shaft 313. The rotation of the second connecting rod 314 pushes the positioning shaft 313 to move outward, and the positioning shaft 313 pulls the first connecting rod 312. It rotates around the outer side of the first fixed block 311, thereby using the rotation of the second connecting rod 314 and the first connecting rod 312 to stabilize the movement of the limiting plate 308 while sharing the impact force and vibration delivered to the limiting plate 308 when the rubber buffer block 203 is hit. The outer wall of the first fixed block 311 is fixedly connected to the inner wall of the positioning box 201. Several dampers 309 are fixedly connected to the outer wall of the limiting plate 308. Springs 310 are fixedly connected to the outer wall of the dampers 309. The dampers 309 and springs 310 work together to relieve and absorb the pressure and vibration on the limiting plate 308. The outer wall of the dampers 309 is fixedly connected to the inner wall of the positioning box 201. The outer wall of the springs 310 is fixedly connected to the outer wall of the limiting plate 308.

[0032] One specific application of this embodiment is:

[0033] When the operator needs to use the equipment, first insert the rubber buffer block 203 into the positioning box 201. The movement of the rubber buffer block 203 pushes the connecting block 204 into the positioning box 201, allowing the connecting block 204 to wrap around the positioning post 205. The positioning post 205 restricts the movement range of the connecting block 204, preventing it from shifting. During the movement of the connecting block 204, the positioning post 205 pushes the positioning plate 207 inside the connecting block 204, causing the positioning plate 207 to compress the damping spring 206 connected inside the connecting block 204. The elasticity of the damping spring 206 relieves and absorbs the pressure on the positioning plate 207. The positioning plate 207 pulls the connecting rod 208, causing it to move the limiting rod 209 around the positioning plate 204. Rotating around the inside of the connecting block 204, the rotation of the limiting rod 209 pushes the first locking block 210 to insert into the inside of the positioning post 205, and the first locking block 210 presses against multiple second locking blocks 212 inside the positioning post 205. The movement of the second locking blocks 212 presses against the pressure spring 211 inside the positioning post 205, and the elasticity of the pressure spring 211 pushes the second locking blocks 212 to insert into the inside of the first locking block 210, so that the second locking blocks 212 and the first locking blocks 210 are locked inside the positioning post 205. At this time, the rubber buffer block 203 is fixed inside the positioning box 201. Then, the laser rangefinder 202 fixed inside the positioning box 201 is activated to monitor the distance between the moving seat 1 and the object in real time. Then, the electric... The machine 301 drives the connecting shaft 302 to rotate. The connecting shaft 302 drives the first positioning rod 303 to rotate inside the positioning box 201. Simultaneously, the rotation of the first positioning rod 303 moves the first support rod 304. The first support rod 304 pulls the second positioning rod 305, which in turn moves the second support rod 307. The sliding groove 306 restricts the second support rod 307 within a certain range and direction, allowing it to horizontally push the limiting plate 308. The limiting plate 308 on the other side moves in the same way, bringing the two limiting plates 308 closer together to clamp the rubber buffer block 203, preventing it from being damaged by vibration and impact when subjected to shock. If the movement is too large, a misalignment will occur. During the movement of the limiting plate 308, the second fixing block 315 will move. The second fixing block 315 pulls the second connecting rod 314, causing it to rotate around the second fixing block 315, while simultaneously moving the positioning shaft 313. The movement of the positioning shaft 313 pulls the first connecting rod 312, causing it to rotate around the outside of the first fixing block 311. Thus, by having the second connecting rod 314 and the first connecting rod 312 rotate around the outside of the positioning shaft 313 simultaneously, the movement of the limiting plate 308 can be stabilized. The second connecting rod 314 and the first connecting rod 312 also share the impact force and vibration received by the limiting plate 308. When the limiting plate 308 is impacted, it will compress the damper 309 and the spring 310 on the rear side.The damper 309 and the spring 310 work together to absorb the pressure and vibration experienced by the limiting plate 308, thereby allowing the limiting plate 308 to effectively restrict the position of the rubber buffer block 203.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A flexible anti-collision protection device for gantry crane legs, comprising a movable base (1), characterized in that, The top outer wall of the movable seat (1) is fixedly connected to a hanging door leg (101); The outer wall of the movable base (1) is provided with a protective mechanism (2), the protective mechanism (2) includes a positioning box (201), the outer wall of the positioning box (201) is fixedly connected to the outer wall of the movable base (1), a plurality of laser rangefinders (202) are fixedly connected to the inner wall of the positioning box (201), a rubber buffer block (203) is inserted into the inner wall of the positioning box (201), a connecting block (204) is fixedly connected to the outer wall of the rubber buffer block (203), and a positioning column (205) is slidably connected to the inner wall of the connecting block (204). A damping spring (206) is fixedly connected to the inner wall of the connecting block (204). A positioning plate (207) is fixedly connected to the outer wall of the end of the damping spring (206) away from the connecting block (204). A plurality of connecting rods (208) are rotatably connected to the inner wall of the positioning plate (207). A limit rod (209) is rotatably connected to the outer wall of the end of the connecting rod (208) away from the positioning plate (207). A first locking block (210) is fixedly connected to the outer wall of the limit rod (209). A limit mechanism (3) is provided on the inner wall of the positioning box (201).

2. The flexible anti-collision protection device for gantry crane legs according to claim 1, characterized in that, The inner wall of the first locking block (210) is provided with a locking groove (213), and the inner wall of the positioning post (205) is fixedly connected with a plurality of pressure springs (211), and the outer wall of the end of the pressure spring (211) away from the positioning post (205) is fixedly connected with a second locking block (212).

3. The flexible anti-collision protection device for gantry crane legs according to claim 2, characterized in that, The outer wall of the positioning post (205) is fixedly connected to the inner wall of the positioning box (201), the outer wall of the limiting rod (209) is rotatably connected to the inner wall of the connecting block (204), the outer wall of the second card block (212) is inserted into the inner wall of the card slot (213), and the outer wall of the second card block (212) is engaged with the inner wall of the first card block (210).

4. The flexible anti-collision protection device for gantry crane legs according to claim 3, characterized in that, The limiting mechanism (3) includes a motor (301), the outer wall of the motor (301) is fixedly connected to the inner wall of the positioning box (201), the inner wall of the positioning box (201) is provided with a sliding groove (306), the output end of the motor (301) is fixedly connected to a connecting shaft (302) through a coupling, the outer wall of the connecting shaft (302) is rotatably connected to the inner wall of the positioning box (201), the outer wall of the connecting shaft (302) is fixedly connected to a first positioning rod (303), and the outer wall of the first positioning rod (303) is fixedly connected to a plurality of first support rods (304).

5. A flexible anti-collision protection device for gantry crane legs according to claim 4, characterized in that, The outer wall of the first support rod (304) away from the first positioning rod (303) is rotatably connected to the second positioning rod (305). The outer wall of the second positioning rod (305) is fixedly connected to the second support rod (307). The outer wall of the second positioning rod (305) is slidably connected to the inner wall of the slide groove (306). The bottom outer wall of the second support rod (307) is fixedly connected to the limiting plate (308). The outer wall of the limiting plate (308) is slidably connected to the inner wall of the positioning box (201).

6. A flexible anti-collision protection device for gantry crane legs according to claim 5, characterized in that, The outer wall of the limiting plate (308) is fixedly connected to a second fixing block (315), the outer wall of the second fixing block (315) is rotatably connected to a second connecting rod (314), the outer wall of the second connecting rod (314) away from the second fixing block (315) is rotatably connected to a positioning shaft (313), and the outer wall of the positioning shaft (313) is rotatably connected to a first connecting rod (312).

7. A flexible anti-collision protection device for gantry crane legs according to claim 6, characterized in that, The outer wall of the first connecting rod (312) away from the positioning shaft (313) is rotatably connected to a first fixing block (311). The outer wall of the first fixing block (311) is fixedly connected to the inner wall of the positioning box (201). The outer wall of the limiting plate (308) is fixedly connected to several dampers (309).

8. A flexible anti-collision protection device for gantry crane legs according to claim 7, characterized in that, A spring (310) is fixedly connected to the outer wall of the damper (309), the outer wall of the damper (309) is fixedly connected to the inner wall of the positioning box (201), and the outer wall of the spring (310) is fixedly connected to the outer wall of the limiting plate (308).

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