Hollowed-out driving wheel for large crawler crane

Abstract

The utility model belongs to the technical field of crawler driving wheels, and particularly relates to a hollow type driving wheel for a large crawler crane, which comprises a rotating drum, a supporting plate is fixedly connected in the rotating drum, a bidirectional threaded rod is arranged on the supporting plate, the bidirectional threaded rod penetrates through the supporting plate and is rotatably connected with the supporting plate, two movable openings are formed in the rotating drum, and the two movable openings are communicated with the supporting plate. The two-way threaded rod is sleeved with two symmetrically-arranged moving boxes in a threaded mode, the ends, away from each other, of the two moving boxes are fixedly connected with arc-shaped plates, the two moving boxes are arranged on the two parts, opposite in thread rotating direction, of the two-way threaded rod in a threaded mode respectively, and a rotating rod is rotationally connected into the rotating cylinder; and the right end of the rotating rod penetrates through the rotating cylinder. The crawler belt is opened through the two arc-shaped plates, the driving disc can be replaced by a single person, the replacement efficiency is high, and manpower is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of crawler drive wheels, in particular to a hollow drive wheel for a large crawler crane. Background Art

[0002] The crawler drive wheel is a key component of a crawler crane, responsible for transmitting power and driving the crawler movement. The drive wheel transmits the driving force of the travel motor to the crawler through a gear structure, enabling the vehicle to travel and turn smoothly on various terrains.

[0003] When the drive wheel is in use, it will wear out due to the vibration during the travel of the crawler crane and needs to be replaced from time to time. When replacing the existing drive wheel, after jacking up the crawler crane, it requires the cooperation of multiple people to first spread the crawler, and then remove the drive wheel for replacement. It is difficult for a worker to replace it alone.

[0004] Therefore, we propose a hollow drive wheel for large crawler crane to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a hollow drive wheel for a large crawler crane.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A hollow drive wheel for a large crawler crane includes a rotating drum, a support plate is fixedly connected to the rotating drum, a bidirectional threaded rod is provided on the support plate, the bidirectional threaded rod passes through the support plate and is rotatably connected thereto, two movable openings are provided on the rotating drum, two symmetrically arranged moving boxes are threadedly sleeved on the bidirectional threaded rod, and the ends of the two moving boxes that are away from each other are fixedly connected to an arc plate, and the two moving boxes are respectively threadedly sleeved on the two parts of the bidirectional threaded rod with opposite threads.

[0008] Preferably, a rotating rod is rotatably connected inside the rotating drum, the right end of the rotating rod passes through the rotating drum, the right end of the rotating rod is fixedly connected to a rotating disk, a first gear is fixedly sleeved on the bidirectional threaded rod, a second gear is fixedly sleeved on the rotating rod, and the first gear and the second gear are engaged with each other.

[0009] Preferably, the curved surfaces of the two curved plates are both provided with tooth-shaped patterns.

[0010] Preferably, a ring is fixedly sleeved on the rotating drum, four bolts are fixedly connected to the ring, nuts are threadedly sleeved on the four bolts, a driving disk is sleeved on the rotating drum, and four mounting holes are opened on the driving disk.

[0011] Preferably, a motor is provided at the rear of the rotating drum, and the rear end of the rotating drum is fixedly connected to the output end of the motor.

[0012] Preferably, both left and right ends of the bidirectional threaded rod are fixedly connected with stoppers.

[0013] Compared with existing technologies, the advantages of this device are:

[0014] 1. Use two curved plates to spread the crawler tracks, remove the old drive disc, and fasten the new drive disc with four nuts. Rotate the rotating disc in the opposite direction to move the two moving boxes closer to each other. Insert the tooth blocks on the new rotating disc into the tooth grooves of the crawler tracks. The drive disc can be replaced by one person.

[0015] In summary, the utility model can support the crawler track with two arc-shaped plates, so that a single person can complete the replacement of the driving disc, which has high replacement efficiency and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of a hollow drive wheel for a large crawler crane proposed in the present utility model;

[0017] Figure 2 This is a disassembled three-dimensional diagram of the rotating drum and driving disc of a hollow driving wheel for a large crawler crane proposed in the utility model;

[0018] Figure 3 This is a disassembled three-dimensional diagram of a bidirectional threaded rod and a moving box in a hollow drive wheel for a large crawler crane proposed in the utility model;

[0019] Figure 4 The utility model is a cross-sectional view of a hollow drive wheel rotating drum for a large crawler crane.

[0020] In the figure: 1 rotating drum, 2 supporting plate, 3 bidirectional threaded rod, 4 movable opening, 5 moving box, 6 arc plate, 7 first gear, 8 rotating rod, 9 second gear, 10 rotating disk, 11 stopper, 12 ring, 13 bolt, 14 nut, 15 driving disk, 16 mounting hole, 17 motor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figures 1-4A hollow driving wheel for a large crawler crane includes a rotating drum 1, a supporting plate 2 is fixedly connected to the rotating drum 1, a bidirectional threaded rod 3 is provided on the supporting plate 2, the bidirectional threaded rod 3 passes through the supporting plate 2 and is rotatably connected thereto, and two movable openings 4 are provided on the rotating drum 1, and two symmetrically arranged moving boxes 5 are threadedly sleeved on the bidirectional threaded rod 3. The two moving boxes 5 are fixedly connected with an arc plate 6 at one end away from each other, and the two moving boxes 5 are respectively threadedly sleeved on the two parts of the bidirectional threaded rod 3 with opposite threads. When the bidirectional threaded rod 3 rotates, the two moving boxes 5 can move towards or away from each other under the limit of the two movable openings 4.

[0023] A rotating rod 8 is rotatably connected inside the rotating drum 1. The right end of the rotating rod 8 passes through the rotating drum 1. The right end of the rotating rod 8 is fixedly connected to a rotating disk 10. A first gear 7 is fixedly sleeved on the bidirectional threaded rod 3. A second gear 9 is fixedly sleeved on the rotating rod 8. The first gear 7 and the second gear 9 are engaged with each other. By rotating the rotating disk 10, the rotating rod 8 is driven to rotate. The rotation of the second gear 9 drives the first gear 7 to rotate, thereby rotating the bidirectional threaded rod 3. Depending on the rotation direction of the rotating disk 10, the two moving boxes 5 are determined to move closer to or away from each other. Blocks 11 are fixedly connected to the left and right ends of the bidirectional threaded rod 3 to prevent the two moving boxes 5 from detaching from the bidirectional threaded rod 3.

[0024] A circular ring 12 is fixedly provided on the drum 1, and four bolts 13 are fixedly connected to the circular ring 12. Nuts 14 are threadedly provided on the four bolts 13. A driving disc 15 is provided on the drum 1, and four mounting holes 16 are opened on the driving disc 15. The four mounting holes 16 on the driving disc 15 pass through the four bolts 13 respectively. The driving disc 15 is against the circular ring 12 and is fastened by four nuts 14. A motor 17 is provided at the rear of the drum 1, and the rear end of the drum 1 is fixedly connected to the output end of the motor 17. The tooth blocks of the driving disc 15 are inserted into the tooth grooves of the track, thereby driving the track to operate, and the arc surfaces of the two arc-shaped plates 6 are provided with tooth-shaped patterns.

[0025] When using the present invention, when the drive disc 15 is replaced, the crane is lifted by a jack or other tooling, and the rotating disc 10 is rotated to make the two mobile boxes 5 move away from each other, and the crawler track is spread out by the two arc plates 6. The arc surfaces of the two arc plates 6 are provided with tooth-shaped patterns to prevent slipping. Then the four nuts 14 are unscrewed in turn, the old drive disc 15 is removed, and the new drive disc 15 is fastened thereto by the four nuts 14. The rotating disc 10 is rotated in the opposite direction to make the two mobile boxes 5 move closer to each other, and the tooth blocks on the new rotating disc 10 are inserted into the tooth grooves of the crawler track. The replacement can be completed by one person.

[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hollow drive wheel for a large crawler crane, comprising a rotating drum (1), characterized in that: A support plate (2) is fixedly connected to the rotating drum (1), and a bidirectional threaded rod (3) is provided on the supporting plate (2). The bidirectional threaded rod (3) passes through the supporting plate (2) and is rotatably connected thereto. Two movable openings (4) are provided on the rotating drum (1), and two symmetrically arranged moving boxes (5) are threadedly sleeved on the bidirectional threaded rod (3). The ends of the two moving boxes (5) that are away from each other are fixedly connected to an arc plate (6), and the two moving boxes (5) are respectively threadedly sleeved on two parts of the bidirectional threaded rod (3) with opposite thread rotation directions.

2. The hollow drive wheel for a large crawler crane according to claim 1, characterized in that: A rotating rod (8) is rotatably connected inside the rotating drum (1), the right end of the rotating rod (8) passes through the rotating drum (1), and the right end of the rotating rod (8) is fixedly connected to a rotating disk (10). A first gear (7) is fixedly sleeved on the bidirectional threaded rod (3), and a second gear (9) is fixedly sleeved on the rotating rod (8), and the first gear (7) and the second gear (9) are meshed with each other.

3. The hollow drive wheel for a large crawler crane according to claim 1, characterized in that: The arc surfaces of the two arc-shaped plates (6) are both provided with tooth-shaped patterns.

4. The hollow drive wheel for a large crawler crane according to claim 1, characterized in that: A circular ring (12) is fixedly sleeved on the rotating drum (1), and four bolts (13) are fixedly connected to the circular ring (12). Nuts (14) are threadedly sleeved on the four bolts (13). A driving disk (15) is sleeved on the rotating drum (1), and four mounting holes (16) are opened on the driving disk (15).

5. The hollow drive wheel for a large crawler crane according to claim 1, characterized in that: A motor (17) is provided at the rear of the rotating drum (1), and the rear end of the rotating drum (1) is fixedly connected to the output end of the motor (17).

6. The hollow drive wheel for a large crawler crane according to claim 1, characterized in that: Both left and right ends of the bidirectional threaded rod (3) are fixedly connected with stoppers (11).

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