Tension adjusting device for luffing steel wire rope of tower crane

Abstract

The utility model discloses a tension adjusting device for a luffing steel wire rope of a tower crane, which comprises two connecting rods, a U-shaped handle and a rope passing wheel, a connecting column is arranged between the two connecting rods, the U-shaped handle is rotatably connected between the right ends of the two connecting rods, an inclined rod is arranged at the left end of each connecting rod, and the rope passing wheel is arranged on the inclined rod. A rope passing wheel is arranged between the two inclined rods, and a balancing weight positioning assembly is arranged on the connecting rod on the right sides of the inclined rods. The balancing weight positioning assembly is arranged at the left end of the connecting rod, the tension force of the steel wire rope is adjusted by changing the positions or the number of the balancing weights, the abrasion degree is greatly reduced, the maintenance time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a steel wire rope tensioning force regulating mechanism, in particular to a tower crane luffing steel wire rope tensioning force regulating device, belonging to a steel wire rope tension regulating device. Background Art

[0002] When the crane's luffing mechanism is lifting heavy objects, the luffing wire rope will become loose, resulting in insufficient tension in the wire rope, which reduces the sliding friction between the wire rope and the pulley and increases the consumption between the oil-free galvanized wire rope and the pulley. The service life of the wire rope and the pulley is excessively consumed due to insufficient tension in the wire rope. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a tower crane luffing wire rope tension adjustment device, which adjusts the tension of the wire rope by changing the position or number of counterweight blocks, greatly reduces monthly wear, reduces maintenance time, and improves work efficiency.

[0004] The technical solution adopted by the utility model to solve the technical problem is:

[0005] A tower crane luffing wire rope tensioning force adjustment device includes a connecting rod, a U-shaped handle and a rope pulley. There are two connecting rods, and a connecting column is provided between the two connecting rods. A U-shaped handle is rotatably connected between the right ends of the two connecting rods. An inclined rod is provided at the left end of each connecting rod, and a rope pulley is provided between the two inclined rods. A counterweight block positioning assembly is provided on the connecting rod on the right side of the inclined rod.

[0006] The U-shaped handle is fixedly connected to the base, and a guide wheel is arranged above the base.

[0007] The included angle between the oblique rod and the connecting rod is 120°.

[0008] The counterweight positioning assembly consists of a first baffle, a second baffle and a U-shaped positioning frame. There are three first baffles distributed on the connecting rod with the same spacing. Second baffles are provided at both ends of the first baffle located in the middle. A counterweight is provided between two adjacent first baffles, and the counterweight is fixed by a U-shaped positioning frame.

[0009] A connecting block is provided outside the adjacent first baffle, and the end of the U-shaped positioning frame passes through the connecting block and is fixed by bolts outside the connecting block.

[0010] The positive beneficial effects of the utility model are:

[0011] 1. The utility model can realize force transmission by rotatably connecting a U-shaped handle at the right end of the connecting rod and fixing the U-shaped handle to the base. By arranging a connecting column between the two connecting rods, the stability and reliability of the device during use are guaranteed.

[0012] 2. The utility model sets a counterweight positioning assembly at the left end of the connecting rod and adjusts the tension of the wire rope by changing the position or number of the counterweight, which greatly reduces wear and tear, shortens maintenance time, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 This is a diagram of the use state of the utility model;

[0015] Among them: 1-connecting rod, 2-connecting column, 3-U-shaped handle, 4-oblique rod, 5-line wheel, 6-first baffle, 7-second baffle, 8-connecting block, 9-U-shaped positioning frame, 10-bolt, 11-counterweight, A-line pay-off device, B-base. DETAILED DESCRIPTION

[0016] The present invention will be further explained and illustrated below with reference to the accompanying drawings:

[0017] For example, see Figure 1-Figure 2 A tower crane luffing wire rope tensioning force adjustment device includes a connecting rod 1, a U-shaped handle 3 and a rope pulley 5. There are two connecting rods 1, and a connecting column 2 is provided between the two connecting rods 1. The U-shaped handle 3 is rotatably connected between the right ends of the two connecting rods 1. An oblique rod 4 is provided at the left end of each connecting rod 1, and a rope pulley 5 is provided between the two oblique rods 4. A counterweight positioning assembly is provided on the connecting rod 1 on the right side of the oblique rod 4.

[0018] The U-shaped handle 3 is fixedly connected to the base B, and a wire-releasing device A is provided above the base B.

[0019] The included angle between the diagonal rod 4 and the connecting rod 1 is 120°.

[0020] The counterweight positioning assembly consists of a first baffle 6, a second baffle 7 and a U-shaped positioning frame 9. There are three first baffles 6, which are distributed on the connecting rod 1 with the same spacing. Second baffles 7 are provided at both ends of the first baffle 6 located in the middle. A counterweight 11 is provided between the two adjacent first baffles 6, and the counterweight 11 is fixed by the U-shaped positioning frame 9.

[0021] A connecting block 8 is provided on the outside of the adjacent first baffle 6 , and the end of the U-shaped positioning frame 9 passes through the connecting block 8 and is fixed by bolts on the outside of the connecting block 8 .

[0022] In the above description, the three first baffles divide the counterweight positioning assembly into two spaces. When in use, the tooling personnel can adjust the tension of the wire rope by changing the position or number of the counterweights.

[0023] In the above description, a U-shaped handle is connected to the right end of the connecting rod by rotation, and the U-shape is welded to the base. The rope pulley on the connecting rod serves as a transition for the wire rope. The counterweight block is placed in the two spaces formed by the first baffle, and the counterweight block is fixed by a U-shaped positioning frame to increase the overall deadweight to adjust the tension of the wire rope.

[0024] The utility model provides a counterweight positioning assembly at the left end of the connecting rod and adjusts the tension of the wire rope by changing the position or number of the counterweights, which greatly reduces wear and tear, shortens maintenance time, and improves work efficiency.

Claims

1. A tower crane luffing wire rope tensioning force adjustment device, comprising a connecting rod (1), a U-shaped handle (3) and a rope pulley (5), characterized in that: There are two connecting rods (1), and a connecting column (2) is provided between the two connecting rods (1). A U-shaped handle (3) is rotatably connected between the right ends of the two connecting rods (1). An inclined rod (4) is provided at the left end of each connecting rod (1), and a pulley (5) is provided between the two inclined rods (4). A counterweight positioning assembly is provided on the connecting rod (1) on the right side of the inclined rod (4).

2. The tower crane luffing wire rope tensioning force adjustment device according to claim 1, characterized in that: The U-shaped handle (3) is fixedly connected to the base (B), and a wire-releasing device (A) is provided above the base (B).

3. The tower crane luffing wire rope tensioning force adjustment device according to claim 1, characterized in that: The included angle between the oblique rod (4) and the connecting rod (1) is 120°.

4. The tower crane luffing wire rope tensioning force adjustment device according to claim 1, characterized in that: The counterweight positioning assembly consists of a first baffle (6), a second baffle (7) and a U-shaped positioning frame (9), wherein the first baffles (6) are three and are distributed on the connecting rod (1) at the same intervals, and second baffles (7) are provided at both ends of the first baffle (6) located in the middle, and a counterweight (11) is provided between two adjacent first baffles (6), and the counterweight (11) is fixed by the U-shaped positioning frame (9).

5. The tower crane luffing wire rope tensioning force adjusting device according to claim 4, characterized in that: A connecting block (8) is provided outside the adjacent first baffle (6), and the end of the U-shaped positioning frame (9) passes through the connecting block (8) and is fixed by bolts outside the connecting block (8).

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