Fixing device for crawler crane counterweight frame

Abstract

The utility model discloses a fixing device for a crawler crane counterweight frame in the technical field of crawler cranes, which comprises a base, a U-shaped placing plate, a lifting lug, a long bolt and a counterweight block, the counterweight block is mounted on the U-shaped placing plate, a connecting groove is arranged at the bottom of the counterweight block, bumps are arranged at the top of the counterweight block and the top of the U-shaped placing plate, and the connecting groove is connected with the bumps. A fixing rod is arranged at the bottom of the U-shaped placement plate, a positioning rod is arranged on the fixing rod, a sliding groove is formed in the right side of the mounting opening, a moving block is arranged in the sliding groove, and after the positioning rod moves to the bottom of a clamping rod, a spring pushes the moving block to move the clamping rod to the bottom of the U-shaped placement plate. And the moving block drives the clamping rod to move to clamp the positioning rod, the U-shaped placing plate is fixed, and rapid installation of the crawler crane balance weight is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of crawler cranes, in particular to a fixing device for a counterweight frame of a crawler crane. Background Technique

[0002] Before using a crawler crane, a suitable counterweight needs to be installed on the crawler crane for assistance. For example, in a crawler crane counterweight interchange device (patent number: CN201922457356.9) disclosed in Chinese patent literature, the fixed bottom plate is fixed by multiple groups of bolts. When fixing, each bolt needs to be tightened, which wastes a long time. Moreover, the counterweight of the crawler crane is large in volume. When tightening the fixing bolts, it is necessary to work on the crawler crane for a long time, reducing the work safety of the staff. In addition, the counterweight blocks are all placed on the fixed bottom plate, and when hoisting the fixed bottom plate, it is impossible to hoist a single counterweight block, and it is impossible to flexibly adjust the counterweight blocks of the crawler crane.

[0003] Therefore, we propose a fixing device for a counterweight frame of a crawler crane Content of the Utility Model

[0004] The purpose of the utility model is to provide a fixing device for a counterweight frame of a crawler crane to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A fixing device for a counterweight frame of a crawler crane, including a base, a U-shaped placement plate, a lifting lug, a long bolt and a counterweight block. The counterweight block is installed on the U-shaped placement plate. A connecting groove is provided at the bottom of the counterweight block, and convex blocks are provided at the top of the counterweight block and the top of the U-shaped placement plate. A lifting ring is provided at the top of the convex block. An installation opening is provided on the base. A fixing rod is provided at the bottom of the U-shaped placement plate. A positioning rod is provided on the fixing rod. A sliding groove is provided on the right side of the installation opening. A moving block is provided in the sliding groove. A clamping rod is provided at the left end of the moving block. A threaded hole is provided in the middle of the right end of the moving block. A spring is provided on the right side of the moving block. A through hole is provided at the right end of the sliding groove.

[0006] Preferably, the inner wall of the lower half of the connecting groove is inclined and extends to both sides, and the height of the connecting groove is greater than the sum of the heights of the convex block and the lifting ring.

[0007] Preferably, the clamping rod is fixedly connected to the moving block, and the top of the clamping rod is provided as an inclined surface.

[0008] Preferably, the long bolt is matched with the threaded hole, and the right end of the threaded hole is chamfered.

[0009] Preferably, the inner wall of the upper half of the installation opening is inclined.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The fixing rod provided at the bottom of the U-shaped placement plate is installed into the installation opening. The upper part of the clamping rod is inclined. The fixing rod drives the positioning rod to move downward and pushes the clamping rod to move to the right. When the positioning rod moves to the bottom of the clamping rod, the spring pushes the moving block, and the moving block drives the clamping rod to move to clamp the positioning rod, so as to fix the U-shaped placement plate and complete the rapid installation of the crawler crane counterweight. When the long bolt does not disassemble the U-shaped placement plate, it does not need to be installed. The spring and the moving block are in the chute and will not be affected by external forces, so that the clamping rod stably fixes the positioning rod.

[0012] 2. Each counterweight block is provided with a connecting groove, a convex block and a lifting ring. The connecting groove at the bottom of the upper counterweight block will clamp the convex block provided at the top of the lower counterweight block, and stack layer by layer in this way. And the lifting ring hoists a single counterweight block, and the counterweight block can be adjusted flexibly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the counterweight block installation of the present utility model.

[0015] In the figure: 1, base; 2, U-shaped placement plate; 3, lifting lug; 4, long bolt; 5, counterweight block; 6, connecting groove; 7, convex block; 8, lifting ring; 9, installation opening; 10, fixing rod; 11, positioning rod; 12, chute; 13, moving block; 14, clamping rod; 15, threaded hole; 16, spring; 17, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0017] Please refer to Figure 1-2, the utility model provides a technical solution: a fixing device for a crawler crane counterweight frame, including a base 1, a U-shaped placement plate 2, a lifting lug 3, a long bolt 4 and a counterweight 5. The counterweight 5 is installed on the U-shaped placement plate 2. A connecting groove 6 is provided at the bottom of the counterweight 5. Convex blocks 7 are provided at the tops of both the counterweight 5 and the U-shaped placement plate 2. A lifting ring 8 is provided at the top of the convex block 7. An installation opening 9 is provided on the base 1. A fixing rod 10 is provided at the bottom of the U-shaped placement plate 2. A positioning rod 11 is provided on the fixing rod 10. A sliding groove 12 is provided on the right side of the installation opening 9. A moving block 13 is provided in the sliding groove 12. A clamping rod 14 is provided at the left end of the moving block 13. A threaded hole 15 is provided in the middle of the right end of the moving block 13. A spring 16 is provided on the right side of the moving block 13. A through hole 17 is provided at the right end of the sliding groove 12. For installing the counterweight 5, place the counterweight 5 on the U-shaped placement plate, hoist the U-shaped placement plate 2 and place it on the base 1. The fixing rod 10 provided at the bottom of the U-shaped placement plate 2 is installed into the installation opening 9. The upper part of the clamping rod 14 is inclined. The fixing rod 10 drives the positioning rod 11 to move downward and push the clamping rod 14 to move to the right. When the positioning rod 11 moves to the bottom of the clamping rod 14, the spring 16 pushes the moving block 13, and the moving block 13 drives the clamping rod 14 to move and clamp the positioning rod 11 to fix the U-shaped placement plate 2, completing the rapid installation of the crawler crane counterweight. When disassembling the U-shaped placement plate 2, move the long bolt 4 so that the long bolt 4 passes through the through hole 17 and cooperates with the threaded hole 15, and rotate the long bolt 4 and install it into the threaded hole 15. Pull the long bolt 4 to drive the moving block 13 to move to the right, so that the clamping rod 14 disengages from the fixation of the positioning rod 11 to disassemble the U-shaped placement plate 2. And when the long bolt 14 is not used for disassembling the U-shaped placement plate 2, it does not need to be installed. The spring 16 and the moving block 13 are in the sliding groove 12 and will not be affected by external forces. Thus, the clamping rod 14 stably fixes the positioning rod 11.

[0018] Wherein, the inner wall of the lower half of the connecting groove 6 is set to be inclined and extends to both sides. The height of the connecting groove 6 is greater than the sum of the heights of the convex block 7 and the lifting ring 8. Each counterweight 5 is provided with a connecting groove 6, a convex block 7 and a lifting ring 8. The connecting groove 6 at the bottom of the upper counterweight 5 will clamp the convex block 7 provided at the top of the lower counterweight 5, and stack layer by layer in this way. And the lifting ring 8 hoists a single counterweight 5 to flexibly adjust the counterweight 5;

[0019] The clamping rod 14 is fixedly connected to the moving block 13. The top of the clamping rod 14 is set to be a slope. The fixing rod 10 drives the positioning rod 11 to move downward, and the positioning rod 11 pushes the clamping rod 14 to move through the slope at the top of the clamping rod 14;

[0020] The long bolt 4 cooperates with the threaded hole 15. The right end of the threaded hole 15 is chamfered. The diameter of the right end of the threaded hole 15 is greater than the diameter of the threaded hole 5, making it easier to install the long bolt 4;

[0021] The inner wall of the upper half of the installation opening 9 is inclined, and the width of the top of the installation opening 9 is greater than the width of the lower part of the installation opening 9. When hoisting the U-shaped placement plate 2, the fixing rod 10 and the positioning rod 11 provided at the bottom of the U-shaped placement plate 2 are more easily installed into the installation opening 9.

[0022] Working principle: Hoist the U-shaped placement plate 2 and place it on the base 1. The fixing rod 10 provided at the bottom of the U-shaped placement plate 2 is installed into the installation opening 9. The upper part of the clamping rod 14 is inclined. The fixing rod 10 drives the positioning rod 11 to move downward and push the clamping rod 14 to move to the right. When the positioning rod 11 moves to the bottom of the clamping rod 14, the spring 16 pushes the moving block 13, and the moving block 13 drives the clamping rod 14 to move to clamp the positioning rod 11, fixing the U-shaped placement plate 2 and completing the rapid installation of the crawler crane counterweight. When disassembling the U-shaped placement plate 2, move the long bolt 4 so that the long bolt 4 passes through the through hole 17 and cooperates with the threaded hole 15, and rotate the long bolt 4 and install it into the threaded hole 15. Pull the long bolt 4 to drive the moving block 13 to move to the right, so that the clamping rod 14 is disengaged from the fixation of the positioning rod 11, and the U-shaped placement plate 2 is disassembled. Moreover, when the long bolt 14 disassembles the U-shaped placement plate 2, it does not need to be installed. The spring 16 and the moving block 13 are located in the chute 12 and will not be affected by external forces. Therefore, the clamping rod 14 stably fixes the positioning rod 11.

[0023] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a counterweight frame of a crawler crane, comprising a base (1), a U-shaped placing plate (2), a lifting lug (3), a long bolt (4) and a counterweight block (5), characterized in that: The counterweight block (5) is installed on the U-shaped placing plate (2). A connecting groove (6) is provided at the bottom of the counterweight block (5). Convex blocks (7) are provided at the top of the counterweight block (5) and the top of the U-shaped placing plate (2). A lifting ring (8) is provided at the top of the convex block (7). An installation opening (9) is provided on the base (1). A fixing rod (10) is provided at the bottom of the U-shaped placing plate (2). A positioning rod (11) is provided on the fixing rod (10). A sliding groove (12) is provided on the right side of the installation opening (9). A moving block (13) is provided in the sliding groove (12). A clamping rod (14) is provided at the left end of the moving block (13). A threaded hole (15) is provided in the middle of the right end of the moving block (13). A spring (16) is provided on the right side of the moving block (13). A through hole (17) is provided at the right end of the sliding groove (12).

2. The fixing device for a crawler crane counterweight frame according to claim 1, characterized in that: The inner wall of the lower half of the connecting groove (6) is inclined and extends to both sides. The height of the connecting groove (6) is greater than the sum of the heights of the convex block (7) and the lifting ring (8).

3. The fixing device for a crawler crane counterweight frame according to claim 1, characterized in that: The clamping rod (14) is fixedly connected to the moving block (13), and the top of the clamping rod (14) is provided as an inclined surface.

4. The fixing device for a crawler crane counterweight frame according to claim 1, characterized in that: The long bolt (4) is matched with the threaded hole (15), and the right end of the threaded hole (15) is chamfered.

5. The fixing device for a crawler crane counterweight frame according to claim 1, characterized in that: The inner wall of the upper half of the installation opening (9) is inclined.

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