Portal crane track assembly type anti-collision device

Abstract

The present application belongs to gantry crane technical field, specifically refers to a kind of gantry crane track assembly type anti-collision device, including hydraulic buffer assembly, self-adapting resistance component, telescopic component, lifting adjusting assembly, clamping assembly and booster component, the hydraulic buffer assembly is located in telescopic component, the telescopic component sliding is located on lifting adjusting assembly, the self-adapting resistance component is located in hydraulic buffer assembly.The present application is in non-working state, by adjusting the longitudinal height of telescopic sleeve, the buffer resistance when telescopic impact head compression can be adjusted, to adapt to different load working conditions;Not only this, due to the compression amount change of adjusting spring, only in non-working state can the elastic insert be slidably adjusted, so in the working process, even if adjusting spring is also continued to be compressed, but because the elastic insert cannot slide, thus will not produce the problem that buffer late-stage resistance decreases.

Description

Technical Field

[0001] This invention belongs to the field of gantry crane technology, specifically referring to a gantry crane track-mounted anti-collision device. Background Technology

[0002] On the ground track of the gantry crane, buffer limiters need to be installed to prevent collisions. The main function of the limiters is to buffer and absorb the impact force of moving parts when the electronic brake fails. On the one hand, it can prevent moving parts from derailing, and on the other hand, it can prevent rigid impact damage to moving parts when they collide with each other.

[0003] Existing buffers generally have a fixed structure and a fixed resistance during buffering, and the impact height and installation position of the buffers are difficult to adjust. For large equipment such as gantry cranes, the weight of moving parts is mainly affected by the load mass (the set speed generally does not change much). The performance requirements and technical characteristics of the buffers are completely different under no-load and full-load conditions.

[0004] Under heavy loads, not only is it necessary to have high buffer resistance, long buffer stroke, and high energy absorption limit, but it is also necessary to minimize the height of the impact point in order to avoid the problem of guide rail deformation caused by excessive impact force arm.

[0005] When the load is small, the buffer resistance should be small (if the resistance is too large, it will be close to a rigid impact and will easily damage the structure). At this time, the buffer strength is sufficient, and the height of the impact point should be appropriately increased so that the impact point is closer to the center of the gantry crane and the stopping effect is optimized. Summary of the Invention

[0006] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a gantry crane track-mounted anti-collision device. In the non-working state, the buffering resistance during the compression of the telescopic impact head can be adjusted by adjusting the longitudinal height of the telescopic sleeve, thereby adapting to different load conditions. Furthermore, since the compression of the adjusting spring can only be adjusted by sliding the elastic insert in the non-working state, even if the adjusting spring continues to be compressed during operation, the problem of reduced buffering resistance in the later stages will not occur because the elastic insert cannot slide.

[0007] The technical solution adopted by this invention is as follows: This invention proposes a gantry crane rail assembly anti-collision device, including a hydraulic buffer assembly, an adaptive resistance assembly, a telescopic assembly, a lifting adjustment assembly, a clamping assembly, and a pressurizing assembly. The hydraulic buffer assembly is disposed in the telescopic assembly, the telescopic assembly is slidably disposed on the lifting adjustment assembly, the adaptive resistance assembly is disposed in the hydraulic buffer assembly, the lifting adjustment assembly is disposed on the clamping assembly, and the pressurizing assembly is arrayed in the clamping assembly.

[0008] The hydraulic buffer assembly includes a hydraulic chamber and a piston rod. The hydraulic chamber is fixedly connected to the telescopic assembly, and the piston rod is engaged and slidably disposed in the hydraulic chamber. The adaptive resistance assembly includes a spring adjusting rod, which is engaged and slidably disposed in the hydraulic chamber.

[0009] When the piston rod slides in the hydraulic buffer assembly, it is subjected to resistance from the liquid. This resistance can dissipate the kinetic energy transmitted when the load impacts, thus absorbing the impact force and protecting the moving mechanism.

[0010] Furthermore, the adaptive resistance assembly also includes an adjusting spring, an elastic ring, and a valve ring. The piston rod has through holes and grooves evenly distributed in an annular pattern on its piston. The outer wall of the piston rod also has a stepped groove. The elastic ring and the valve ring are fitted into the stepped groove. The valve ring has elastic inserts evenly distributed in an annular pattern, and the elastic inserts are slidably disposed in the groove.

[0011] In the non-working state, by changing the pre-compression of the adjusting spring, the position of the valve ring relative to the stepped groove can be adjusted, thereby changing the position of the elastic insert in the slide groove, thus controlling the actual size of the through hole, and thus achieving the technical purpose of adjusting the buffer resistance.

[0012] In operation, the squeezing force between the elastic insert and the slide groove will increase sharply under the action of liquid thrust. At this time, even if the compression of the adjusting spring changes, the valve ring will not slide on the stepped groove, so there will be no problem of reduced resistance in the later stage of buffering.

[0013] Preferably, the elastic ring is made of an elastic material, and the adjusting spring is located between the valve ring and the spring adjusting rod.

[0014] Furthermore, the lifting adjustment assembly includes a trapezoidal outer frame and a butterfly plate. The trapezoidal outer frame is provided with a ramp, and the end of the spring adjusting rod is provided with a ramp platform. The ramp platform and the ramp are in sliding contact.

[0015] When the height of the ramp changes, the spring adjusting rod can automatically change its position in the hydraulic chamber due to the limiting position of the ramp, thereby automatically adjusting the buffer resistance.

[0016] Preferably, the trapezoidal outer frame is also provided with a longitudinal groove, the butterfly plate is engaged and slidably disposed in the longitudinal groove, and the butterfly plate is provided with a fastening hole. By means of bolts passing through the fastening hole and the longitudinal groove, the fixing and unlocking of the butterfly plate can be controlled.

[0017] Adjusting the height of the butterfly plate according to the load size allows for targeted optimization of the impact force transmission path, thereby optimizing the buffering effect.

[0018] The end of the hydraulic chamber is also equipped with a buffer chamber with a central hole. Its main function is to compensate for the change in the volume of the hydraulic chamber caused by the extension and retraction of the piston rod and the spring adjusting rod. Its presence will cause the telescopic sleeve to have a very small amount of misalignment in the initial stage of the buffer, but it will not affect the realization of the technical effect of this device.

[0019] Furthermore, the telescopic assembly includes a telescopic sleeve, a telescopic impact head, and a dust cover. The telescopic sleeve is fixedly connected to the butterfly plate, the hydraulic chamber is fixedly connected to the telescopic sleeve, the telescopic impact head is engaged and slidably disposed in the telescopic sleeve, the piston rod is fixedly connected to the telescopic impact head, and the dust cover is sleeved on the telescopic impact head.

[0020] Furthermore, the clamping assembly includes a split mounting base, an inner reinforcing rib, and a tensioning stud. The split mounting base and the trapezoidal outer frame are connected by bolts, and the inner reinforcing rib is fixed to the inner side of the split mounting base.

[0021] Preferably, the tensioning stud passes through the split mounting base and the inner reinforcing rib, and by tightening the nut at the end of the tensioning stud, the split mounting base can be squeezed toward the center.

[0022] During installation, only initial tightening is required. The clamping force of the pressurizing component on the guide rail body is relatively small, which has little impact on the lifespan of both the clamp and the guide rail body.

[0023] Furthermore, the booster assembly includes a longitudinal rotating shaft, an elliptical wheel, and a torsion spring. The longitudinal rotating shaft is rotatably disposed within the inner reinforcing rib, the elliptical wheel is fixedly connected to the bottom end of the longitudinal rotating shaft, and the torsion spring is disposed between the inner reinforcing rib and the elliptical wheel.

[0024] When absorbing impact, the slight sliding of the clamping assembly can drive the elliptical wheel to rotate, thereby greatly increasing the clamping force between the elliptical wheel and the guide rail body, achieving the technical effect of temporarily improving stability.

[0025] The beneficial effects achieved by the present invention using the above structure are as follows:

[0026] (1) When the piston rod slides in the hydraulic buffer assembly, it will be subject to resistance from the liquid. This resistance can consume the kinetic energy transmitted when the load impacts, and play a technical role in absorbing the impact force and protecting the moving mechanism.

[0027] (2) In the non-working state, by changing the pre-compression of the adjusting spring, the position of the valve ring relative to the stepped groove can be adjusted, thereby changing the position of the elastic insert in the slide groove, thereby controlling the actual size of the through hole, and thus achieving the technical purpose of adjusting the buffer resistance.

[0028] (3) In the working state, the squeezing force between the elastic insert and the slide will increase sharply under the action of liquid thrust. At this time, even if the compression of the adjusting spring changes, the valve ring will not slide on the stepped groove, so there will be no problem of reduced resistance in the later stage of buffering.

[0029] (4) When the height of the ramp changes, the spring adjusting rod can automatically change its position in the hydraulic chamber due to the limiting of the ramp, thereby automatically adjusting the buffer resistance.

[0030] (5) Adjusting the height of the butterfly plate according to the load size can optimize the transmission path of the impact force with a focus, thereby optimizing the buffering effect.

[0031] (6) Only initial locking is required during installation. The clamping force of the pressurizing component on the guide rail body is relatively small, which has little impact on the life of the fixture and the guide rail body.

[0032] (7) When absorbing impact, the slight sliding of the clamping component can drive the elliptical wheel to rotate, thereby greatly increasing the clamping force between the elliptical wheel and the guide rail body, and achieving the technical effect of temporarily improving stability. Attached Figure Description

[0033] Figure 1 This is a perspective view of a gantry crane track-mounted anti-collision device proposed in this invention;

[0034] Figure 2 This is a front view of a gantry crane track-mounted anti-collision device proposed in this invention;

[0035] Figure 3 This is a left view of a gantry crane track-mounted anti-collision device proposed in this invention;

[0036] Figure 4 for Figure 3 A cross-sectional view along the cutting line AA;

[0037] Figure 5 for Figure 4 A cross-sectional view along the cutting line BB;

[0038] Figure 6 for Figure 2 A cross-sectional view along the section line CC;

[0039] Figure 7 for Figure 2 A cross-sectional view along the cutting line DD;

[0040] Figure 8 This is an exploded structural diagram of an assembled anti-collision device for gantry crane tracks proposed in this invention;

[0041] Figure 9for Figure 4 A magnified view of a section at point I;

[0042] Figure 10 for Figure 8 A magnified view of a section at point II.

[0043] The components include: 1. Hydraulic buffer assembly; 2. Adaptive resistance assembly; 3. Telescopic assembly; 4. Lifting adjustment assembly; 5. Clamping assembly; 6. Pressure boosting assembly; 7. Guide rail body; 11. Hydraulic chamber; 12. Piston rod; 21. Spring adjusting rod; 22. Adjusting spring; 23. Elastic ring; 24. Valve ring; 31. Telescopic sleeve; 32. Telescopic impact head; 33. Dust cover; 41. Trapezoidal outer frame; 42. Butterfly plate; 51. Split mounting base; 52. Inner reinforcing rib; 53. Tensioning stud; 61. Longitudinal rotating shaft; 62. Elliptical wheel; 63. Torsion spring; 121. Through hole; 122. Step groove; 123. Slide groove; 211. Inclined platform; 241. Elastic insert; 411. Inclined section; 412. Longitudinal groove; 421. Fastening hole.

[0044] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0046] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] like Figures 1-10 As shown, the present invention proposes a gantry crane rail assembly anti-collision device, including a hydraulic buffer assembly 1, an adaptive resistance assembly 2, a telescopic assembly 3, a lifting adjustment assembly 4, a clamping assembly 5, and a pressurizing assembly 6. The hydraulic buffer assembly 1 is disposed in the telescopic assembly 3, the telescopic assembly 3 is slidably disposed on the lifting adjustment assembly 4, the adaptive resistance assembly 2 is disposed in the hydraulic buffer assembly 1, the lifting adjustment assembly 4 is disposed on the clamping assembly 5, and the pressurizing assembly 6 is arrayed in the clamping assembly 5.

[0048] The hydraulic buffer assembly 1 includes a hydraulic chamber 11 and a piston rod 12. The hydraulic chamber 11 is fixedly connected to the telescopic assembly 3, and the piston rod 12 is engaged and slidably disposed in the hydraulic chamber 11. The adaptive resistance assembly 2 includes a spring adjusting rod 21, which is engaged and slidably disposed in the hydraulic chamber 11.

[0049] When the piston rod 12 slides in the hydraulic buffer assembly 1, it will be subject to resistance from the liquid. This resistance can consume the kinetic energy transmitted when the load impacts, thus achieving the technical effect of absorbing the impact force and protecting the moving mechanism.

[0050] The adaptive resistance assembly 2 also includes an adjusting spring 22, an elastic ring 23, and a valve ring 24. The piston rod 12 has through holes 121 and sliding grooves 123 evenly distributed in an annular pattern on the piston. The outer wall of the piston rod 12 is also provided with a stepped groove 122. The elastic ring 23 and the valve ring 24 are fitted in the stepped groove 122. The valve ring 24 has elastic inserts 241 evenly distributed in an annular pattern on the valve ring 24. The elastic inserts 241 are slidably disposed in the sliding groove 123.

[0051] In the non-working state, by changing the pre-compression of the adjusting spring 22, the position of the valve ring 24 relative to the stepped groove 122 can be adjusted, thereby changing the position of the elastic insert 241 in the slide groove 123, thus controlling the actual size of the through hole 121, and achieving the technical purpose of adjusting the buffer resistance.

[0052] In the working state, the squeezing force between the elastic insert 241 and the slide groove 123 will increase sharply under the action of liquid thrust. At this time, even if the compression of the adjusting spring 22 changes, the valve ring 24 will not slide on the stepped groove 122, so there will be no problem of reduced resistance in the later stage of buffering.

[0053] The elastic ring 23 is made of elastic material, and the adjusting spring 22 is located between the valve ring 24 and the spring adjusting rod 21.

[0054] The lifting adjustment assembly 4 includes a trapezoidal outer frame 41 and a butterfly plate 42. The trapezoidal outer frame 41 is provided with a ramp 411, and the end of the spring adjustment rod 21 is provided with a ramp platform 211. The ramp platform 211 and the ramp 411 are in sliding contact.

[0055] When the height of the ramp 211 changes, due to the limiting of the ramp 411, the spring adjusting rod 21 can automatically change its position in the hydraulic chamber 11, thereby automatically adjusting the buffer resistance.

[0056] The trapezoidal outer frame 41 is also provided with a longitudinal groove 412. The butterfly plate 42 is engaged and slidably disposed in the longitudinal groove 412. The butterfly plate 42 is provided with a fastening hole 421. The fixing and unlocking of the butterfly plate 42 can be controlled by the bolt passing through the fastening hole 421 and the longitudinal groove 412.

[0057] Adjusting the height of the butterfly plate 42 according to the load size allows for targeted optimization of the impact transmission path, thereby optimizing the buffering effect.

[0058] The end of the hydraulic chamber 11 is also provided with a buffer chamber with a central hole. Its main function is to compensate for the change in the internal volume of the hydraulic chamber 11 caused by the extension and retraction of the piston rod 12 and the spring adjusting rod 21. Its presence will cause the telescopic sleeve 31 to have a very small amount of misalignment in the initial buffer stage, but it will not affect the realization of the technical effect of this device.

[0059] The telescopic assembly 3 includes a telescopic sleeve 31, a telescopic impact head 32, and a dust cover 33. The telescopic sleeve 31 is fixedly connected to the butterfly plate 42, the hydraulic chamber 11 is fixedly connected to the telescopic sleeve 31, the telescopic impact head 32 is engaged and slidably disposed in the telescopic sleeve 31, the piston rod 12 is fixedly connected to the telescopic impact head 32, and the dust cover 33 is sleeved on the telescopic impact head 32.

[0060] The clamping assembly 5 includes a split mounting base 51, an inner reinforcing rib 52, and a tensioning stud 53. The split mounting base 51 and the trapezoidal outer frame 41 are connected by bolts, and the inner reinforcing rib 52 is fixed to the inner side of the split mounting base 51.

[0061] The tensioning stud 53 passes through the split mounting base 51 and the inner reinforcing rib 52. By tightening the nut at the end of the tensioning stud 53, the split mounting base 51 can be squeezed toward the center.

[0062] During installation, only initial tightening is required. The clamping force of the pressurizing component 6 on the guide rail body 7 is relatively small, which has little impact on the lifespan of both the fixture and the guide rail body 7.

[0063] The booster assembly 6 includes a longitudinal rotating shaft 61, an elliptical wheel 62, and a torsion spring 63. The longitudinal rotating shaft 61 is rotatably disposed in the inner reinforcing rib 52, the elliptical wheel 62 is fixedly connected to the bottom end of the longitudinal rotating shaft 61, and the torsion spring 63 is disposed between the inner reinforcing rib 52 and the elliptical wheel 62.

[0064] When absorbing impact, the slight sliding of the clamping component 5 can drive the elliptical wheel 62 to rotate, thereby greatly increasing the clamping force between the elliptical wheel 62 and the guide rail body 7, achieving the technical effect of temporarily improving stability.

[0065] In practical use, the device first needs to be installed on the guide rail body 7. The two sets of clamping components 5 and pressure boosting components 6 are gradually brought closer from both sides of the guide rail body 7 so that the elliptical wheel 62 abuts against the groove of the guide rail body 7. Since the torsion spring 63 has the function of resetting the elliptical wheel 62, the short axis of the elliptical wheel 62 is perpendicular to the guide rail body 7 when there is no lateral force.

[0066] By tightening the nut at the end of the tensioning stud 53, the compressive force between the elliptical wheel 62 and the guide rail body 7 can be gradually increased until the initial locking is completed. At this time, the clamping force of the pressure boosting component 6 on the guide rail body 7 is relatively small, and the impact on the life of the fixture and the guide rail body 7 is small.

[0067] Then, the trapezoidal outer frame 41 is connected to the two separate mounting bases 51 by bolts, and it is ready for use.

[0068] When the device is subjected to a lateral impact, the slight sliding of the clamping component 5 can drive the elliptical wheel 62 to rotate, thereby greatly increasing the clamping force between the elliptical wheel 62 and the guide rail body 7, achieving the technical effect of temporarily improving stability.

[0069] When the butterfly plate 42 is in the low position, the telescopic impact head 32 extends out of the hydraulic chamber 11 to a large extent, the compression of the adjusting spring 22 is small, and therefore the deformation of the elastic ring 23 is also small. At this time, the elastic insert 241 extends into the slide groove 123 to a large extent, the actual area of ​​the through hole 121 is small, and the liquid flow is difficult. Therefore, when it is impacted, the buffering resistance of the telescopic impact head 32 is large.

[0070] Because the distance between the piston rod 12 and the spring adjusting rod 21 is relatively large, the stroke of the telescopic impact head 32 is relatively long, and the upper limit of the energy it can absorb is also relatively high; and at this time, the distance between the telescopic sleeve 31 and the guide rail body 7 is relatively short, the force arm of the impact force is also relatively short, and the upper limit of the stability of this device is even higher; this mode is suitable for working conditions with large loads.

[0071] When the butterfly plate 42 is in a high position, the telescopic impact head 32 extends out of the hydraulic chamber 11 with a smaller amplitude, the compression of the adjusting spring 22 is larger, and therefore the deformation of the elastic ring 23 is also larger. At this time, the elastic insert 241 extends into the slide groove 123 with a smaller amplitude, the actual area of ​​the through hole 121 is larger, and the liquid flows easily. Therefore, when subjected to impact, the buffering resistance of the telescopic impact head 32 is smaller.

[0072] Because the distance between the piston rod 12 and the spring adjusting rod 21 is relatively short, the stroke of the telescopic impact head 32 is relatively short, and the upper limit of the energy it can absorb is also relatively low. Furthermore, at this time, the distance between the telescopic sleeve 31 and the guide rail body 7 is relatively far. Under the premise of sufficient structural strength, the point of impact is closer to the center of the gantry, resulting in a higher stopping effect. This mode is suitable for working conditions with relatively small loads.

[0073] Although the energy absorption range of the low-level state can cover that of the high-level state, if the buffer resistance is too large at this time, it is equivalent to a hard limiter and it is difficult to play a buffering and protection role.

[0074] The compression of the adjusting spring 22 can only be adjusted by sliding the elastic insert 241 when it is not in operation. When in operation, the squeezing force between the elastic insert 241 and the slide groove 123 will increase sharply under the action of liquid thrust. At this time, even if the compression of the adjusting spring 22 changes, the valve ring 24 will not slide on the stepped groove 122, so there will be no problem of reduced resistance in the later stage of buffering.

[0075] In addition, specific engineering issues such as the selection of materials for components need to be determined in conjunction with the specific working conditions, for example:

[0076] If the product size is small, the elastic insert 241 can be made of a single piece of elastic metal material; if the product size is large, the elastic insert 241 needs to be divided into two parts: elastic and rigid. The elastic part is used for deformation and direction during sliding adjustment, and the rigid part is used to resist the impact of liquid.

[0077] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0078] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A gantry crane track-mounted anti-collision device, characterized in that: It includes a hydraulic buffer assembly (1), an adaptive resistance assembly (2), a telescopic assembly (3), a lifting adjustment assembly (4), a clamping assembly (5), and a pressurizing assembly (6). The hydraulic buffer assembly (1) is located in the telescopic assembly (3), the telescopic assembly (3) is slidably located on the lifting adjustment assembly (4), the adaptive resistance assembly (2) is located in the hydraulic buffer assembly (1), the lifting adjustment assembly (4) is located on the clamping assembly (5), and the pressurizing assembly (6) is arrayed in the clamping assembly (5). The hydraulic buffer assembly (1) includes a hydraulic chamber (11) and a piston rod (12). The hydraulic chamber (11) is fixed in the telescopic assembly (3). The piston rod (12) is engaged and slidably disposed in the hydraulic chamber (11). The adaptive resistance assembly (2) includes a spring adjusting rod (21). The spring adjusting rod (21) is engaged and slidably disposed in the hydraulic chamber (11).

2. The gantry crane track-mounted anti-collision device according to claim 1, characterized in that: The adaptive resistance component (2) further includes an adjusting spring (22), an elastic ring (23) and a valve ring (24). The piston rod (12) has a through hole (121) and a sliding groove (123) evenly distributed in an annular pattern on the piston. The outer wall of the piston rod (12) is also provided with a stepped groove (122). The elastic ring (23) and the valve ring (24) are fitted in the stepped groove (122). The valve ring (24) has an elastic insert (241) evenly distributed in an annular pattern. The elastic insert (241) is slidably disposed in the sliding groove (123).

3. The gantry crane track-mounted anti-collision device according to claim 2, characterized in that: The elastic ring (23) is made of elastic material, and the adjusting spring (22) is located between the valve ring (24) and the spring adjusting rod (21).

4. The gantry crane track-mounted anti-collision device according to claim 3, characterized in that: The lifting adjustment assembly (4) includes a trapezoidal outer frame (41) and a butterfly plate (42). The trapezoidal outer frame (41) is provided with a ramp (411). The end of the spring adjustment rod (21) is provided with a ramp platform (211). The ramp platform (211) and the ramp (411) are in sliding contact.

5. The gantry crane track-mounted anti-collision device according to claim 4, characterized in that: The trapezoidal outer frame (41) is also provided with a longitudinal groove (412), and the butterfly plate (42) is engaged and slidably disposed in the longitudinal groove (412). The butterfly plate (42) is provided with a fastening hole (421). The fixing and unlocking of the butterfly plate (42) can be controlled by the bolt passing through the fastening hole (421) and the longitudinal groove (412).

6. The gantry crane track-mounted anti-collision device according to claim 5, characterized in that: The telescopic assembly (3) includes a telescopic sleeve (31), a telescopic impact head (32), and a dust cover (33). The telescopic sleeve (31) is fixed to the butterfly plate (42), the hydraulic chamber (11) is fixed to the telescopic sleeve (31), the telescopic impact head (32) is engaged and slidably disposed in the telescopic sleeve (31), the piston rod (12) is fixed to the telescopic impact head (32), and the dust cover (33) is sleeved on the telescopic impact head (32).

7. A gantry crane track-mounted anti-collision device according to claim 6, characterized in that: The clamping assembly (5) includes a split mounting base (51), an inner reinforcing rib (52) and a tensioning stud (53). The split mounting base (51) and the trapezoidal outer frame (41) are connected by bolts. The inner reinforcing rib (52) is fixed to the inner side of the split mounting base (51).

8. A gantry crane track-mounted anti-collision device according to claim 7, characterized in that: The tensioning stud (53) passes through the split mounting base (51) and the inner reinforcing rib (52). By tightening the nut at the end of the tensioning stud (53), the split mounting base (51) can be squeezed toward the center.

9. A gantry crane track-mounted anti-collision device according to claim 8, characterized in that: The booster assembly (6) includes a longitudinal rotating shaft (61), an elliptical wheel (62) and a torsion spring (63). The longitudinal rotating shaft (61) is rotatably disposed in the inner reinforcing rib (52). The elliptical wheel (62) is fixed to the bottom end of the longitudinal rotating shaft (61). The torsion spring (63) is disposed between the inner reinforcing rib (52) and the elliptical wheel (62).

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