Weighing device of crawler crane

Abstract

The utility model provides a weight taking device of a crawler crane, which comprises a weight box, a stand column is fixedly arranged in the weight box, according to the weight taking device of the crawler crane, a pressing plate is pressed downwards, so that an extrusion cylinder drives a swinging block to move to one side of the extrusion plate, and the pressing plate is pressed downwards; when the extrusion cylinder moves downwards, the inclined plane of the limiting plate is driven to extrude the inclined plane of the limiting groove, so that the limiting plate shrinks towards one side, then when the swing block is located on one side of the extrusion plate, the limiting spring resets to push one end of the limiting plate to enter the limiting groove, and the limiting plate limits the moved swing block; then, when the stand column inclines, a swing block is driven to impact an extrusion plate to move towards one side, so that the extrusion plate impacts a trigger switch to stop working of the weight-taking assembly, overload weight-taking of the weight-taking assembly can be prevented, and the situation that an existing weight-taking device cannot stop working during overload weight-taking, so that the stand column inclines to cause damage to the weight-taking assembly is avoided; and economic loss is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a weight-taking device of a crawler crane. Background Art

[0002] Crawler crane is a self-propelled crane used in high-rise building construction. It is a boom rotating crane that uses crawler tracks to travel. The crawler tracks have a large ground contact area, good passability, strong adaptability, and can travel with loads. It is suitable for lifting operations on construction sites.

[0003] In a weighing device for a crawler crane proposed in the prior art patent application number "202122223032.6", a column is installed in the center of the counterweight box, and an electric turntable is installed on the top of the column. However, the existing weighing device cannot stop working when it is overloaded, causing the column to tilt and damage the weighing assembly, resulting in economic losses.

[0004] Therefore, it is necessary to provide a weight-removing device for a crawler crane to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model provides a weight taking device for a crawler crane, which solves the problem that the existing weight taking device cannot stop working when overloaded, causing the column to tilt and damage the weight taking component, resulting in economic losses.

[0006] In order to solve the above technical problems, the utility model provides a crawler crane weight-taking device, comprising a counterweight box, a column is fixedly installed inside the counterweight box, a weight-taking assembly is arranged on the column, a support plate is fixedly installed on the column, a limiting cylinder is fixedly installed on the support plate, a sliding groove is provided on one side of the limiting cylinder, and a limiting groove is provided on the other side of the limiting cylinder, a connecting plate is fixedly installed inside the limiting cylinder, a reset spring is fixedly connected to the upper surface of the connecting plate, an extrusion cylinder is fixedly connected to the upper end of the reset spring, a pressing plate is fixedly installed on the upper end of the extrusion cylinder, and a swing rope is fixedly connected to the bottom end of the extrusion cylinder, a swing block is fixedly connected to the bottom end of the swing rope, a pulling column is slidably connected to the extrusion cylinder, a positioning plate and a limiting plate are fixedly installed at both ends of the pulling column, and a limiting spring is sleeved on the surface of the pulling column, a telescopic member is fixedly installed on the inner side surface of the limiting cylinder, an extrusion plate is fixedly installed on the output end of the telescopic member, and a trigger switch is fixedly installed on the inner side surface of the limiting cylinder.

[0007] Preferably, the bottom end of the limiting cylinder is located inside the supporting plate, and a limiting hole is provided inside the connecting plate to facilitate the downward movement of the rocking block.

[0008] Preferably, the return spring is located inside the limiting cylinder, the extrusion cylinder is slidably connected to the limiting cylinder, and the swing rope and the swing block are located inside the return spring.

[0009] Preferably, a slot is provided on the extrusion cylinder to facilitate the movement of the limiting plate, and the positioning plate is located inside the sliding slot.

[0010] Preferably, the limiting plate is slidably connected to the extrusion cylinder, and one end of the limiting plate is triangular, and one end of the limiting plate is located inside the limiting groove.

[0011] Preferably, two ends of the limit spring are fixedly connected to the side surface of the slot and the side surface of the limit plate respectively, and the extrusion plate is arc-shaped.

[0012] Preferably, the trigger switch is located on one side of the extrusion plate.

[0013] Compared with the related art, the crawler crane weight taking device provided by the utility model has the following beneficial effects:

[0014] The utility model provides a weight-taking device for a crawler crane, which drives a pressing plate downward to drive an extrusion cylinder to move a rocking block to one side of the extrusion plate, and drives the inclined surface of the limiting plate to squeeze the inclined surface of the limiting groove while the extrusion cylinder moves downward, so that the limiting plate contracts to one side, and then when the rocking block is located at one side of the extrusion plate, the limiting spring resets and pushes one end of the limiting plate into the interior of the limiting groove, so that the limiting plate limits the moved rocking block, and then when the column is tilted, the rocking block is driven to hit the extrusion plate to move to one side, so that the extrusion plate hits a trigger switch to suspend the operation of the weight-taking component, thereby preventing the weight-taking component from overloading and overloading, and avoiding the inability of the existing weight-taking device to suspend work when overloading, so that the column tilts and causes the weight-taking component to be damaged, resulting in economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of a weight-removing device for a crawler crane provided by the utility model;

[0016] Figure 2 for Figure 1 A side sectional view of the limiting cylinder shown;

[0017] Figure 3 for Figure 1 A bottom view of the limiting cylinder is shown.

[0018] Numbers in the figure: 1. counterweight box, 2. column, 3. weight removal assembly, 4. support plate, 5. limit cylinder, 51. sliding groove, 52. limit groove, 6. connecting plate, 7. reset spring, 8. extrusion cylinder, 81. slot, 9. pressing plate, 10. swing rope, 11. swing block, 1101, limit hole, 12. pulling column, 13. positioning plate, 14. limit plate, 15. limit spring, 16. telescopic member, 17. extrusion plate, 18. trigger switch. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of a weight-removing device for a crawler crane provided by the utility model; Figure 2 for Figure 1 A side sectional view of the limiting cylinder shown; Figure 3 for Figure 1 A crawler crane weight-removing device comprises a counterweight box 1, a column 2 is fixedly installed inside the counterweight box 1, a weight-removing assembly 3 is arranged on the column 2, a support plate 4 is fixedly installed on the column 2, a limit cylinder 5 is fixedly installed on the support plate 4, a sliding groove 51 is provided on one side of the limit cylinder 5, and a limit groove 52 is provided on the other side of the limit cylinder 5, a connecting plate 6 is fixedly installed inside the limit cylinder 5, a reset spring 7 is fixedly connected to the upper surface of the connecting plate 6, an extrusion cylinder 8 is fixedly connected to the upper end of the reset spring 7, and the extrusion cylinder 8 is fixedly connected to the upper end of the reset spring 7. A pressing plate 9 is fixedly installed on the upper end, and a swing rope 10 is fixedly connected to the bottom end of the extrusion cylinder 8, and a swing block 11 is fixedly connected to the bottom end of the swing rope 10. A pulling column 12 is slidably connected to the extrusion cylinder 8, and a positioning plate 13 and a limit plate 14 are fixedly installed at both ends of the pulling column 12, and a limit spring 15 is sleeved on the surface of the pulling column 12. A telescopic part 16 is fixedly installed on the inner side surface of the limit cylinder 5, and an extrusion plate 17 is fixedly installed on the output end of the telescopic part 16. A trigger switch 18 is fixedly installed on the inner side surface of the limit cylinder 5.

[0021] The counterweight box 1, the column 2 and the weight removal assembly 3 adopt the existing technology, and the bottom of the counterweight box 1 is provided with a threaded groove for facilitating the movement of the counterweight box 1.

[0022] The bottom end of the limiting cylinder 5 is located inside the supporting plate 4 , and a limiting hole 1101 is provided inside the connecting plate 6 to facilitate the downward movement of the rocking block 11 .

[0023] The support plate 4 can support the limiting cylinder 5 , and the limiting cylinder 5 can limit the extrusion cylinder 8 .

[0024] The return spring 7 is located inside the limiting cylinder 5 , the extrusion cylinder 8 is slidably connected to the limiting cylinder 5 , and the swing rope 10 and the swing block 11 are located inside the return spring 7 .

[0025] The return spring 7 can drive the extrusion cylinder 8 to move, and the swing rope 10 can drive the swing block 11 to move.

[0026] The extrusion cylinder 8 is provided with a slot 81 for facilitating the movement of the limiting plate 14 , and the positioning plate 13 is located inside the sliding slot 51 .

[0027] The extrusion cylinder 8 will drive the swing rope 10 to move, the card slot 81 can limit the limit plate 14, the sliding slot 51 can limit the positioning plate 13, and the positioning plate 13 moves inside the sliding slot 51.

[0028] The limiting plate 14 is slidably connected to the extrusion cylinder 8 , and one end of the limiting plate 14 is triangular, and one end of the limiting plate 14 is located inside the limiting groove 52 .

[0029] Pull the positioning plate 13 to one side, so that the positioning plate 13 drives the pulling column 12 to move to one side, so that the pulling column 12 drives one end of the limiting plate 14 to no longer be located inside the limiting groove 52, so that the limiting plate 14 no longer limits the extrusion cylinder 8, so that the reset spring 7 resets and drives the extrusion cylinder 8 to move upward, so that the extrusion cylinder 8 drives the rocking block 11 to move to the inside of the reset spring 7, and then can drive the rocking block 11 to reset.

[0030] Two ends of the limit spring 15 are fixedly connected to the side surface of the clamping groove 81 and the side surface of the limit plate 14 respectively, and the pressing plate 17 is arc-shaped.

[0031] The limiting spring 15 can push the limiting plate 14 to move.

[0032] The trigger switch 18 is located on one side of the pressing plate 17 .

[0033] The trigger switch 18 can control the weight removal component 3 to stop working.

[0034] The working principle of the weight taking device of the crawler crane provided by the utility model is as follows:

[0035] When the weight-removing device needs to be used, first press the pressing plate 9 downward, so that the pressing plate 9 drives the extrusion cylinder 8 to move downward, and the extrusion cylinder 8 drives the swing rope 10 and the swing block 11 to move downward, so that the swing block 11 passes through the limiting hole 1101 and is located on one side of the extrusion plate 17. While the extrusion cylinder 8 moves downward, it drives the inclined surface of the limiting plate 14 to squeeze the plane of the limiting groove 52, so that the limiting plate 14 shrinks to one side. Then, when the swing block 11 is located on one side of the extrusion plate 17, the limiting spring 15 resets and pushes one end of the limiting plate 14 to move to the inside of the limiting groove 52, so that the limiting plate 14 limits the extrusion cylinder 8, so that the extrusion cylinder 8 limits the moved swing block 11. Then, when the column 2 tilts, the swing block 11 hits the extrusion plate 17 to one side, so that the extrusion plate 17 squeezes the trigger switch 18 to suspend the operation of the weight-removing component 3, thereby preventing the weight-removing component 3 from overloading.

[0036] Compared with the related art, the crawler crane weight taking device provided by the utility model has the following beneficial effects:

[0037] By pressing the pressing plate 9 downward, the extrusion cylinder 8 drives the rocking block 11 to move to one side of the extrusion plate 17. When the extrusion cylinder 8 moves downward, it drives the inclined surface of the limiting plate 14 to squeeze the inclined surface of the limiting groove 52, so that the limiting plate 14 shrinks to one side. Then, when the rocking block 11 is located on one side of the extrusion plate 17, the limiting spring 15 resets and pushes one end of the limiting plate 14 into the interior of the limiting groove 52, so that the limiting plate 14 limits the moved rocking block 11. Then, when the column 2 tilts, it will drive the rocking block 11 to hit the extrusion plate 17 and move to one side, so that the extrusion plate 17 hits the trigger switch 18 to stop the weight removal component 3 from working, thereby preventing the weight removal component 3 from overloading and preventing the existing weight removal device from being unable to suspend work when overloaded, causing the column 2 to tilt and damage the weight removal component 3, resulting in economic losses.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A weight removal device for a crawler crane, comprising a counterweight box (1), a column (2) fixedly mounted inside the counterweight box (1), a weight removal assembly (3) arranged on the column (2), characterized in that: A support plate (4) is fixedly mounted on the upright column (2), a limiting cylinder (5) is fixedly mounted on the support plate (4), a sliding groove (51) is provided on one side of the limiting cylinder (5), and a limiting groove (52) is provided on the other side of the limiting cylinder (5), a connecting plate (6) is fixedly mounted inside the limiting cylinder (5), a return spring (7) is fixedly connected to the upper surface of the connecting plate (6), an extrusion cylinder (8) is fixedly connected to the upper end of the return spring (7), a pressing plate (9) is fixedly mounted on the upper end of the extrusion cylinder (8), and a bottom end of the extrusion cylinder (8) is fixedly connected to the bottom end of the extrusion cylinder (8). There is a swing rope (10), the bottom end of which is fixedly connected to a swing block (11), the extrusion cylinder (8) is slidably connected to a pulling column (12), the two ends of the pulling column (12) are respectively fixedly installed with a positioning plate (13) and a limit plate (14), and a limit spring (15) is sleeved on the surface of the pulling column (12), the inner side surface of the limit cylinder (5) is fixedly installed with a telescopic part (16), the output end of the telescopic part (16) is fixedly installed with an extrusion plate (17), and the inner side surface of the limit cylinder (5) is fixedly installed with a trigger switch (18).

2. The crawler crane weight removal device according to claim 1, characterized in that: The bottom end of the limiting cylinder (5) is located inside the supporting plate (4), and a limiting hole (1101) is provided inside the connecting plate (6) to facilitate the downward movement of the rocking block (11).

3. The crawler crane weight removal device according to claim 1, characterized in that: The return spring (7) is located inside the limit cylinder (5), the extrusion cylinder (8) is slidably connected to the limit cylinder (5), and the swing rope (10) and the swing block (11) are located inside the return spring (7).

4. The crawler crane weight removal device according to claim 1, characterized in that: The extrusion cylinder (8) is provided with a slot (81) for facilitating the movement of the limiting plate (14), and the positioning plate (13) is located inside the sliding slot (51).

5. The crawler crane weight removal device according to claim 1, characterized in that: The limiting plate (14) is slidably connected to the extrusion cylinder (8), and one end of the limiting plate (14) is triangular, and one end of the limiting plate (14) is located inside the limiting groove (52).

6. The crawler crane weight taking device according to claim 4, characterized in that: The two ends of the limit spring (15) are respectively fixedly connected to the side surface of the clamping groove (81) and the side surface of the limit plate (14), and the extrusion plate (17) is arc-shaped.

7. The crawler crane weight removal device according to claim 1, characterized in that: The trigger switch (18) is located on one side of the extrusion plate (17).

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