An anti-collision device for the end beam of a double-girder crane

Abstract

This utility model provides an end beam anti-collision device for a double-girder crane, including a mounting plate fixedly connected to the end beam and two sets of anti-collision mechanisms disposed on the mounting plate. The two sets of anti-collision mechanisms are respectively disposed on the rails on the upper side of the two column beams. The anti-collision mechanism includes a fixed seat, clamping arms symmetrically disposed on both sides of the fixed seat, and a drive mechanism for driving the clamping arms to swing. This end beam anti-collision device for a double-girder crane combines elastic buffering and rail clamping mechanisms to prevent collisions, effectively overcoming the shortcomings of simple elastic buffering.

Description

Technical Field

[0001] This utility model relates to a crane accessory, specifically, to an anti-collision device for the end beam of a double-girder crane. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. It is also called an overhead crane, gantry crane, or hoist. A bridge crane is a lifting device that spans across workshops, warehouses, and material yards for material handling. Because its two ends rest on tall concrete pillars or metal supports, it resembles a bridge. The bridge frame of a double-girder bridge crane runs longitudinally along tracks laid on elevated structures on both sides, making full use of the space beneath the bridge frame for material handling without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery.

[0003] Bridge cranes mainly consist of a trolley mechanism and a trip trolley mechanism. The bridge frame of the trolley mechanism typically includes two main beams, with a running track on the upper side of the main beams. The end beams of the trip trolley mechanism have wheels on the lower side corresponding to the track, facilitating the movement of the trip trolley mechanism along the track. However, in actual use, if the trip trolley mechanism's braking is not timely or if a malfunction occurs, the trip trolley end beam can easily collide with the end beams of the main beams or the limiting plates at the ends of the track.

[0004] Currently, most anti-collision devices for crane end beams on the market involve setting spring buffer mechanisms on the crane end beams. For example, Chinese patent CN214359808U discloses an anti-collision device for the traveling end beam of an unmanned crane. However, the buffering effect of using a spring structure alone is limited.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an anti-collision device for the end beams of a double-girder crane.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A collision avoidance device for the end beam of a double-girder crane includes a mounting plate fixedly connected to the end beam and two sets of collision avoidance mechanisms mounted on the mounting plate. The two sets of collision avoidance mechanisms are respectively set on the upper rails of the two column beams. The collision avoidance mechanism includes a fixed seat, clamping arms symmetrically arranged on both sides of the fixed seat, and a drive mechanism for driving the clamping arms to swing. The clamping arms are hinged to the fixed seat. The drive mechanism includes a vertical sliding sleeve mounted on the fixed seat, a sliding column that slides with the vertical sliding sleeve, and a transmission component that drives the sliding column to move up and down. The lower end of the sliding column is hinged to the middle of the two clamping arms. The upper end of the sliding column is connected to an upper transmission block, which is located above the fixed seat. A longitudinal slider is provided between the upper transmission block and the fixed seat. A slide rail is provided between the upper transmission block and the fixed seat. The upper transmission block and / or the fixed seat are provided with a slide rail. The upper surface and / or the lower surface of the longitudinal slider include an inclined surface. The height of the longitudinal slider gradually decreases from the end away from the end beam to the end near the end beam. The longitudinal slider slides with the upper transmission block and / or the fixed seat. Limit plates are respectively provided at the end of the longitudinal slider away from the end beam and the end near the end beam.

[0009] The fixed base includes a support base and a front mounting plate and a rear mounting plate disposed on the lower side of the support base. The front mounting plate and the rear mounting plate are symmetrical to each other. The upper part of the clamping arm is fitted into the gap between the front mounting plate and the rear mounting plate. A through hole is provided in the middle of the support base. A vertical sliding sleeve is provided on the lower side of the support base corresponding to the through hole. The sliding column is disposed through the through hole and the vertical sliding sleeve.

[0010] A connecting seat is provided at the lower end of the sliding column, and connecting plates are provided on both sides of the connecting seat. The connecting plates are connected to the clamping arm through the first hinged connecting rod.

[0011] The clamping arm includes a clamping block, a second hinged link hinged to the upper end of the clamping block, and a third hinged link hinged to the middle of the clamping block; the second hinged link is hinged to the first hinged link, and the third hinged link is hinged to the lower side of the front mounting plate and the rear mounting plate; the second hinged link is an L-shaped link, and the middle part of the L-shaped link is hinged to the side of the front mounting plate and the rear mounting plate.

[0012] The connecting seat and the vertical sliding sleeve are connected by a spring, and the spring and the slide column are set coaxially; in the natural state, the two clamping arms are in the open state.

[0013] A first buffer block is installed on the limiting plate at the end of the longitudinal slider away from the end beam.

[0014] The mounting plate is equipped with several second buffer blocks.

[0015] Compared to existing technologies, the advantages of this invention are as follows: This invention provides an end beam anti-collision device for a double-girder crane that uses a rail clamping mechanism to reduce the probability of collision, fully overcoming the shortcomings of simple elastic buffering. Specifically, during use, if the trolley mechanism brakes in a timely manner or malfunctions, after the anti-collision mechanism contacts the limiting plate at the end of the rail, the longitudinal slider moves under force, and the clamping arm clamps the rail to prevent further impact. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the anti-collision mechanism in this utility model (I).

[0018] Figure 3 This is a schematic diagram (II) of the anti-collision mechanism in this utility model.

[0019] In the diagram: 1. Mounting plate; 2. Anti-collision mechanism; 3. Support base; 4. Front mounting plate; 5. Rear mounting plate; 6. Upper transmission block; 7. Longitudinal slider; 8. Limiting plate; 9. Connecting seat; 10. Spring; 11. Connecting plate; 12. First hinged link; 13. Second hinged link; 14. Third hinged link; 15. Clamping block; 16. First buffer block; 17. Slide rail. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit ​​installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.

[0022] like Figure 1-3As shown, an anti-collision device for the end beam of a double-girder crane includes a mounting plate 1 fixedly connected to the end beam and two sets of anti-collision mechanisms 2 disposed on the mounting plate 1. The two sets of anti-collision mechanisms 2 are respectively disposed on the upper rails of the two column beams. The anti-collision mechanism 2 includes a fixed base, clamping arms symmetrically disposed on both sides of the fixed base, and a drive mechanism for driving the clamping arms to swing. The clamping arms are hinged to the fixed base. The drive mechanism includes a vertical sliding sleeve disposed on the fixed base, a sliding column that slides with the vertical sliding sleeve, and a transmission component that drives the sliding column to move up and down. The lower end of the sliding column... The upper end of the sliding column is connected to an upper transmission block 6, which is hinged to the middle of the two clamping arms. The upper transmission block 6 is located above the fixed seat. A longitudinal slider 7 is provided between the upper transmission block 6 and the fixed seat. A slide rail 17 is provided between the upper transmission block 6 and / or the fixed seat. The upper surface and / or lower surface of the longitudinal slider 7 includes an inclined surface. The height of the longitudinal slider 7 gradually decreases from the end away from the end beam to the end near the end beam. The longitudinal slider 7 slides in cooperation with the upper transmission block 6 and / or the fixed seat. Limiting plates 8 are respectively provided at the end of the longitudinal slider 7 away from the end beam and the end near the end beam. Specifically, in this embodiment, the upper surface of the longitudinal slider is provided with an inclined surface, the lower surface is provided with a sliding protrusion, and the upper part of the fixed seat is provided with a groove-shaped slide rail. The sliding protrusion is engaged with the groove-shaped slide rail.

[0023] The anti-collision device of this double-girder crane uses a rail clamping mechanism to reduce the probability of collision, fully overcoming the shortcomings of simple elastic buffering. Specifically, during use, if the trolley mechanism brakes in a timely manner or malfunctions, the anti-collision mechanism will contact the limit plate at the end of the rail, causing the longitudinal slider to move under force, and the clamping arm to clamp the rail, preventing further impact.

[0024] In one embodiment, the fixing base includes a support base 3 and a front mounting plate 4 and a rear mounting plate 5 disposed on the lower side of the support base 3. The front mounting plate 4 and the rear mounting plate 5 are symmetrical to each other. The upper part of the clamping arm is fitted into the gap between the front mounting plate 4 and the rear mounting plate 5. A through hole is provided in the middle of the support base 3. A vertical sliding sleeve is provided on the lower side of the support base 3 corresponding to the through hole. The sliding column passes through the through hole and the vertical sliding sleeve for easy assembly.

[0025] In one embodiment, a connecting seat 9 is provided at the lower end of the sliding column, and connecting plates 11 are provided on both sides of the connecting seat 9. The connecting plates 11 are connected to the clamping arm through a first hinged connecting rod 12. The clamping arm is opened or closed by moving the sliding column up and down.

[0026] In one embodiment, the clamping arm includes a clamping block 15, a second hinged link 13 hinged to the upper end of the clamping block 15, and a third hinged link 14 hinged to the middle of the clamping block 15; the second hinged link 13 is hinged to the first hinged link 12, and the third hinged link 14 is hinged to the lower side of the front mounting plate 4 and the rear mounting plate 5; the second hinged link 13 is an L-shaped link, and the middle part of the L-shaped link is hinged to the side of the front mounting plate 4 and the rear mounting plate 5 for easy assembly.

[0027] In one embodiment, the connecting seat 9 is connected to the vertical sliding sleeve by a spring 10, and the spring 10 is coaxially arranged with the slide rail 17 column; in the natural state of the spring, the two clamping arms are in the open state so that the lifting trolley can move.

[0028] In one embodiment, a first buffer block 16 is installed on the limiting plate 8 at the end of the longitudinal slider 7 away from the end beam to provide initial buffering upon contact with the limiting plate 8 at the end of the track. If the first buffer block 16 contacts the limiting plate 8 at the end of the track, the trolley traveling mechanism brakes in time and stops moving forward, and the clamping arm and other mechanisms do not clamp. If the trolley traveling mechanism does not brake in time and continues to move forward, the longitudinal slider 7 moves to lift the sliding column, and the clamping arm clamps the track.

[0029] In other embodiments, a number of second buffer blocks are provided on the mounting plate 1. The second buffer blocks are not a necessary structure. If the track limiting blocks on the two main beams are connected, multiple buffer blocks can be evenly arranged on the mounting plate 1 to improve the buffering effect.

[0030] Specifically, the first buffer block 16 and the second buffer block can be made of common flexible buffer materials in the existing technology, such as rubber, polyurethane and other materials, or they can be directly assembled with commercially available JHQ-C-20 polyurethane buffers.

[0031] The above embodiments can be combined with each other.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An anti-collision device for the end beams of a double-girder crane, characterized in that: The system includes a mounting plate fixedly connected to the end beam and two sets of anti-collision mechanisms mounted on the mounting plate. The two sets of anti-collision mechanisms correspond to the tracks on the upper sides of the two column beams. Each anti-collision mechanism includes a fixed base, clamping arms symmetrically arranged on both sides of the fixed base, and a drive mechanism for swinging the clamping arms. The clamping arms are hinged to the fixed base. The drive mechanism includes a vertical sliding sleeve mounted on the fixed base, a sliding column that slides with the vertical sliding sleeve, and a transmission component that drives the sliding column to move up and down. The lower end of the sliding column is hinged to the middle of the two clamping arms. The upper end of the sliding column is connected to an upper transmission block, which is located above the fixed base. A longitudinal slider is provided between the upper transmission block and the fixed base. A slide rail is provided between the upper transmission block and the fixed base. The upper transmission block and / or the fixed base have a slide rail. The upper surface and / or the lower surface of the longitudinal slider include an inclined surface. The height of the longitudinal slider gradually decreases from the end furthest from the end beam to the end closest to the end beam. The longitudinal slider slides with the upper transmission block and / or the fixed base. Limit plates are provided at the ends of the longitudinal slider furthest from the end beam and the ends closest to the end beam.

2. The anti-collision device for the end beam of a double-girder crane according to claim 1, characterized in that: The fixed base includes a support base and a front mounting plate and a rear mounting plate disposed on the lower side of the support base. The front mounting plate and the rear mounting plate are symmetrical to each other. The upper part of the clamping arm is fitted into the gap between the front mounting plate and the rear mounting plate. A through hole is provided in the middle of the support base. A vertical sliding sleeve is provided on the lower side of the support base corresponding to the through hole. The sliding column is disposed through the through hole and the vertical sliding sleeve.

3. The anti-collision device for the end beam of a double-girder crane according to claim 2, characterized in that: A connecting seat is provided at the lower end of the sliding column, and connecting plates are provided on both sides of the connecting seat. The connecting plates are connected to the clamping arm through the first hinged connecting rod.

4. The anti-collision device for the end beam of a double-girder crane according to claim 3, characterized in that: The clamping arm includes a clamping block, a second hinged link hinged to the upper end of the clamping block, and a third hinged link hinged to the middle of the clamping block; the second hinged link is hinged to the first hinged link, and the third hinged link is hinged to the lower side of the front mounting plate and the rear mounting plate; the second hinged link is an L-shaped link, and the middle part of the L-shaped link is hinged to the side of the front mounting plate and the rear mounting plate.

5. The anti-collision device for the end beam of a double-girder crane according to claim 4, characterized in that: The connecting seat and the vertical sliding sleeve are connected by a spring, and the spring and the slide column are set coaxially; in the natural state, the two clamping arms are in the open state.

6. The anti-collision device for the end beam of a double-girder crane according to claim 5, characterized in that: A first buffer block is installed on the limiting plate at the end of the longitudinal slider away from the end beam.

7. The anti-collision device for the end beam of a double-girder crane according to claim 6, characterized in that: The mounting plate is equipped with several second buffer blocks.

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