A vertical wedge-shaped anti-falling mechanism

Abstract

A vertical wedge-shaped fall arrestor includes: a fixed frame, a braking assembly, and a buffer assembly. A cable reel is rotatably mounted inside the fixed frame, with a brake disc at one end. The braking assembly includes a limiting block mounted inside the fixed frame and located on one side of the cable reel's axis. The limiting block has an upward-facing first inclined surface on its inner side, and a locking block that moves along the first inclined surface. A downward-facing second inclined surface is located on the side of the locking block facing the limiting block. In application, the second inclined surface contacts the first inclined surface, and the side of the brake disc contacts the side of the locking block. The buffer assembly includes a mounting plate located above the fixed frame and mounted on a crane. A vertically movable pull rod passes through the mounting plate, with its lower end connected to the fixed frame. Multiple buffer pads are sequentially arranged vertically on the mounting plate, with the pull rod passing through the buffer pads and its upper end abutting against the uppermost buffer pad. This device has a simple structure, is easy to maintain, can quickly achieve braking, and reduces impact.

Description

Technical Field

[0001] This utility model relates to the field of braking equipment technology, and in particular to a vertical wedge-shaped anti-fall mechanism. Background Technology

[0002] Overhead cranes are indispensable lifting equipment in modern industrial production, widely used in factory cargo hoisting and movement, port loading and unloading, metallurgical manufacturing, and other scenarios. Their operational safety is directly related to personnel safety, equipment and property protection, and the stability of production processes. As a key safety component, overhead crane fall arrestors are used to quickly brake in unexpected situations such as crane stalling or rope breakage, preventing cargo from falling or equipment from going out of control.

[0003] However, traditional mechanical fall arresters are susceptible to dust, oil, and temperature and humidity fluctuations. In environments such as steel mills and ports, contamination of friction components increases the risk of brake failure, and a sudden increase in grease viscosity at low temperatures can cause jamming. Maintenance costs are high and reliability is poor. With the development of industrial automation and intelligence, higher requirements are being placed on the safety, reliability, environmental adaptability, and response efficiency of vehicle fall arresters. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned prior art, this application provides a vertical wedge-shaped fall arrest mechanism, which has a simple structure, is easy to maintain, can quickly achieve braking and reduce impact, and has strong practicality.

[0005] To achieve the above objectives, the present invention employs the following technology:

[0006] A vertical wedge-shaped fall arrestor includes: a fixing frame, a braking assembly, and a buffer assembly.

[0007] A cable reel is rotatably mounted inside the fixed frame, and a brake disc is provided at one end of the cable reel. The braking assembly includes a limiting block installed inside the fixed frame and located on one side of the cable reel's axis. The limiting block has an upward-facing first inclined surface inside, and a locking block that moves along the first inclined surface inside the limiting block. The locking block has a downward-facing second inclined surface on the side facing the limiting block. In application, the second inclined surface contacts the first inclined surface, and the side of the brake disc contacts the side of the locking block. The buffer assembly includes a mounting plate located above the fixed frame and mounted on the trolley. A pull rod that moves vertically through the mounting plate passes through it. The lower end of the pull rod is connected to the fixed frame. The mounting plate has multiple buffer pads arranged sequentially along the vertical direction. The pull rod passes through the buffer pads, and its upper end abuts against the uppermost buffer pad.

[0008] Furthermore, the winding reel is rotatably mounted on the support shaft, and both ends of the support shaft are mounted on the fixed frame.

[0009] Furthermore, a fixing seat is provided on one side of the fixing frame, at least a part of the fixing seat is located inside the fixing frame, and an installation hole is provided on the outside of the fixing seat. The limiting block and the locking block are both located in the installation hole. The limiting block is installed on the side plate, and the side plate is installed on the outside of the fixing seat.

[0010] Furthermore, the top of the fixing base is provided with a through hole leading to the mounting hole, and a guide rod is inserted through the through hole. The lower end of the guide rod is connected to the clamping block by a steel wire rope, and the upper end of the guide rod is provided with a magnetic block. The magnetic block is attracted to the electromagnet by magnetic force, and the electromagnet is installed on the fixing frame.

[0011] Furthermore, the inner side of the limiting block is provided with two limiting strips, the locking block is located between the two limiting strips, the inner side of the limiting strips is provided with guide blocks, and both sides of the locking block are provided with inclined sliding grooves, and the guide blocks slide in the sliding grooves.

[0012] Furthermore, the mounting base has an arc-shaped groove on the side facing the brake disc, the arc-shaped groove is connected to the mounting hole, and a part of the brake disc is located in the arc-shaped groove.

[0013] Furthermore, the tie rod is inserted into the sleeve, with both ends protruding from the sleeve. The lower end of the sleeve is mounted on the mounting plate, and the sleeve passes through the buffer pad in sequence.

[0014] Furthermore, the top of the mounting plate is provided with a buffer seat, which is hollow inside and has an opening at the top. All the buffer pads are located in the buffer seat. The opening of the buffer seat is provided with a pressure plate, which contacts the uppermost buffer pad and is fitted onto the sleeve.

[0015] Furthermore, a sleeve is provided above the pressure plate, with the lower end of the sleeve fitted onto the sleeve tube and the upper end abutting against the nut, which is installed on the upper end of the pull rod.

[0016] The advantages of this invention are as follows: When the equipment is powered off, the movement of the locking block is directly triggered by the power failure, thereby quickly achieving the braking operation of the winding reel. This not only simplifies the structure but also reduces the number of complex linkage components found in traditional mechanical fall arrestors. It not only reduces manufacturing difficulty and cost but also facilitates later maintenance and repair. Furthermore, fewer parts also reduce mechanical failures caused by component wear and jamming, extending the service life. During braking, the buffer pad provides cushioning, reducing the impact load generated during braking and thus reducing excessive damage to the crane and other structures caused by excessive impact load. Attached Figure Description

[0017] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an embodiment of this application.

[0019] Figure 2This is a cross-sectional structural diagram of the braking component according to an embodiment of this application.

[0020] Figure 3 for Figure 2 Enlarged diagram of point A.

[0021] Figure 4 This is a cross-sectional structural diagram of the buffer component according to an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0023] like Figures 1-4 As shown, this example provides a vertical wedge-shaped fall arrest mechanism, including: a fixing frame 100, a braking assembly 200, and a buffer assembly 300.

[0024] A winding reel 101 is rotatably mounted inside the fixing frame 100. A brake disc 102 is provided at one end of the winding reel 101. Braking of the winding reel 101 is achieved by clamping the brake disc 102. The braking assembly 200 includes a limiting block 201 installed inside the fixing frame 100 and located on one side of the axis of the winding reel 101. The inner side of the limiting block 201 has an upward-facing first inclined surface. A locking block 202, movable along the first inclined surface, is also provided inside the limiting block 201. The side of the locking block 202 facing the limiting block 201 has a downward-facing second inclined surface. During braking, the second inclined surface contacts the first inclined surface, and the side of the brake disc 102 contacts the side of the locking block 202. The surface contact utilizes friction to clamp the reel 101; the buffer assembly 300 includes a mounting plate 301 located above the fixed frame 100 and mounted on the crane. A pull rod 302, which moves vertically, passes through the mounting plate 301. The lower end of the pull rod 302 is connected to the fixed frame 100. Multiple buffer pads 303 are arranged sequentially along the vertical direction on the mounting plate 301. The pull rod 302 passes through the buffer pads 303 and its upper end abuts against the uppermost buffer pad 303. When the fixed frame 100 is impacted and moves downward, the impact force is transmitted to the buffer pads 303 through the pull rod 302, thereby reducing the impact force on the entire crane.

[0025] Specifically, the reel 101 is rotatably mounted on the support shaft 103, and both ends of the support shaft 103 are mounted on the fixing frame 100. The side of the reel 101 facing downwards is on the same side as the locking block 202. During braking, the locking block 202 moves downwards along the first inclined plane, and the distance between the side of the locking block 202 and the brake disc 102 gets closer and closer. When the reel 101 rotates, its side will contact the side of the locking block 202. As the reel 101 applies a downward force to the locking block 202, the brake disc 102 and the locking block 202 become increasingly tighter, thereby achieving braking of the reel 101.

[0026] Specifically, the fixing frame 100 has a fixing seat 104 on one side, at least a portion of which is located inside the fixing frame 100. The fixing seat 104 has a mounting hole 105 on its outer side, where a limiting block 201 and a locking block 202 are located. The limiting block 201 is mounted on a side plate 203, which is mounted on the outer side of the fixing seat 104. The top of the fixing seat 104 has a through hole 106 extending to the mounting hole 105. A guide rod 204 passes through the through hole 106, and its lower end is connected to the locking block 202 via a steel wire rope. A magnetic block 205 is located at the upper end of the guide rod 204, and the magnetic block 205 is connected by magnetic force. The magnetic block 205 is attracted to the electromagnet 206, which is mounted on the fixed frame 100. When the equipment is powered off due to a malfunction or other reasons, the electromagnet 206 is also powered off. The electromagnet 206 no longer attracts the magnetic block 205, so the magnetic block 205 and the locking block 202 will move rapidly downward under the action of gravity. Since the guide rod 204 and the locking block 202 are connected by a steel wire rope, the magnetic block 205 moves vertically under the guidance of the guide rod 204, while the locking block 202 moves downward along the first inclined plane. The locking block 202 will contact the brake disc 102, and the braking of the winding reel will be achieved under the action of friction.

[0027] Specifically, the inner side of the limiting block 201 is provided with two limiting strips 207, the locking block 202 is located between the two limiting strips 207, the inner side of the limiting strips 207 is provided with guide blocks 208, and both sides of the locking block 202 are provided with inclined sliding grooves 209. The length direction of the sliding grooves 209 is parallel to the second inclined surface, and the guide blocks 208 slide in the sliding grooves 209. Thus, as the locking block 202 moves downward, the distance between the locking block 202 and the brake disc 102 gets closer and closer, thereby achieving braking.

[0028] Specifically, the mounting base 104 has an arc-shaped groove 107 on the side facing the brake disc 102. The arc-shaped groove 107 communicates with the mounting hole 105. A portion of the brake disc 102 is located in the arc-shaped groove 107 to ensure that the brake disc 102 can contact the locking block 202 and ensure the braking effect of the locking block 202 on the brake disc 102.

[0029] Specifically, the pull rod 302 is inserted into the sleeve 304, with both ends extending out of the sleeve 304. The lower end of the sleeve 304 is mounted on the mounting plate 301, and the sleeve 304 passes through the buffer pad 303 in sequence. When braking, the pull rod 302 moves along the sleeve 304, which guides the movement of the pull rod 302.

[0030] Specifically, the top of the mounting plate 301 is provided with a buffer seat 305. The buffer seat 305 is hollow inside and has an opening at the top. The buffer pads 303 are all located in the buffer seat 305. The opening of the buffer seat 305 is provided with a pressure plate 306. The pressure plate 306 contacts the uppermost buffer pad 303 and is sleeved on the sleeve 304. A sleeve 307 is provided above the pressure plate 306. The lower end of the sleeve 307 is sleeved on the sleeve 304, and the upper end abuts against the nut. The nut is installed on the upper end of the pull rod 302. When braking, since there is a heavy object hanging below the reel 101, it will cause an impact on the entire device and the vehicle. At this time, the pull rod 302 moves along the sleeve 304, which will drive the sleeve 307 to move downward and push the pressure plate 306 toward the inside of the buffer seat 305, so that the buffer pad 303 is compressed, converting the impact force into a compressive force on the buffer pad 303, thereby reducing the impact on the vehicle.

[0031] Since the above are merely preferred embodiments of this utility model and are not intended to limit this utility model, it is obvious that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A vertical wedge-shaped fall arrestor mechanism, characterized in that, include: The fixed frame (100) has a winding reel (101) rotatably mounted inside, and a brake disc (102) is provided at one end of the winding reel (101). The braking assembly (200) includes a limiting block (201) installed inside the fixing frame (100) and located on one side of the axis of the winding reel (101). The limiting block (201) has an upward-facing first inclined surface on its inner side and a locking block (202) that moves along the first inclined surface on its inner side. The locking block (202) has a downward-facing second inclined surface on its side facing the limiting block (201). In application, the second inclined surface contacts the first inclined surface, and the side of the brake disc (102) contacts the side of the locking block (202). The buffer assembly (300) includes a mounting plate (301) disposed above the fixed frame (100) and mounted on the crane. A pull rod (302) is provided through the mounting plate (301) and is movable in the vertical direction. The lower end of the pull rod (302) is connected to the fixed frame (100). The mounting plate (301) is provided with a plurality of buffer pads (303) in sequence in the vertical direction. The pull rod (302) passes through the buffer pads (303) and its upper end abuts against the uppermost buffer pad (303).

2. The vertical wedge-shaped fall arrestor mechanism according to claim 1, characterized in that, The winding reel (101) is rotatably mounted on the support shaft (103), and both ends of the support shaft (103) are mounted on the fixing frame (100).

3. The vertical wedge-shaped fall arrestor mechanism according to claim 1, characterized in that, The fixing frame (100) has a fixing seat (104) on one side. At least a portion of the fixing seat (104) is located inside the fixing frame (100). The fixing seat (104) has a mounting hole (105) on the outside. The limiting block (201) and the locking block (202) are both located in the mounting hole (105). The limiting block (201) is installed on the side plate (203). The side plate (203) is installed on the outside of the fixing seat (104).

4. The vertical wedge-shaped fall arrestor mechanism according to claim 3, characterized in that, The top of the fixed base (104) is provided with a through hole (106) that extends through to the mounting hole (105). A guide rod (204) is inserted through the through hole (106). The lower end of the guide rod (204) is connected to the clamping block (202) by a steel wire rope. A magnetic block (205) is provided at the upper end of the guide rod (204). The magnetic block (205) is attracted to the electromagnet (206) by magnetic force. The electromagnet (206) is installed on the fixed frame (100).

5. The vertical wedge-shaped fall arrestor mechanism according to claim 1, characterized in that, The inner side of the limiting block (201) is provided with two limiting strips (207), the locking block (202) is located between the two limiting strips (207), the inner side of the limiting strips (207) is provided with a guide block (208), the locking block (202) is provided with inclined grooves (209) on both sides, and the guide block (208) slides in the grooves (209).

6. The vertical wedge-shaped fall arrestor mechanism according to claim 3, characterized in that, The mounting base (104) has an arc-shaped groove (107) on the side facing the brake disc (102), the arc-shaped groove (107) is connected to the mounting hole (105), and a portion of the brake disc (102) is located in the arc-shaped groove (107).

7. The vertical wedge-shaped fall arrestor mechanism according to claim 1, characterized in that, The pull rod (302) is inserted into the sleeve (304) and both ends protrude from the sleeve (304). The lower end of the sleeve (304) is installed on the mounting plate (301), and the sleeve (304) passes through the buffer pad (303) in sequence.

8. The vertical wedge-shaped fall arrestor mechanism according to claim 7, characterized in that, The mounting plate (301) is provided with a buffer seat (305) at the top. The buffer seat (305) is hollow inside and has an opening at the top. The buffer pads (303) are all located in the buffer seat (305). The opening of the buffer seat (305) is provided with a pressure plate (306). The pressure plate (306) contacts the uppermost buffer pad (303) and is sleeved on the sleeve (304).

9. The vertical wedge-shaped fall arrestor mechanism according to claim 8, characterized in that, A sleeve (307) is provided above the pressure plate (306). The lower end of the sleeve (307) is fitted onto the sleeve (304), and the upper end abuts against the nut. The nut is installed on the upper end of the pull rod (302).

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