Silent crane

Abstract

The utility model discloses a silent crane, relates to the field of hoisting equipment, and aims to solve the problems that in the prior art, when an existing electric hoist is used for hoisting, the operation noise of a motor is large, noise is generated by friction between a hoisting steel wire rope and a lifting hook connecting structure, and the hearing of personnel is easily damaged after long-time operation. A wire guide is movably connected to an opening in the front end of the electric hoist, a sound insulation box is fixedly arranged on the outer side of the electric hoist, a sound absorption material layer is fixedly arranged on the inner end face of the sound insulation box, a strip-shaped opening is formed in the front end of the middle of the lower end face of the sound insulation box, and a first wear-resisting sound absorption pipe is movably connected into the strip-shaped opening. A steel wire rope is connected to the lower end of the soundproof box, a second wear-resistant sound absorption pipe is fixedly arranged at the rear end of the middle of the lower end face of the soundproof box, a lifting hook connector is movably connected to the middle of the steel wire rope, a rotating roller is rotationally connected into the lifting hook connector, and a wear-resistant rubber layer is fixedly arranged on the rotating roller.

Description

Technical Field

[0001] The utility model relates to the field of lifting equipment, in particular to a silent crane. Background Art

[0002] Electric hoist is a kind of lifting equipment installed on overhead crane and gantry crane. Electric hoist has the characteristics of small size, light weight, simple operation and easy use. It is used in industrial and mining enterprises, warehouses, docks and other places. The electric hoist has a compact structure and the motor axis is perpendicular to the drum axis. The electric hoist adopts a worm gear transmission device.

[0003] At present, when electric hoists are lifting, there are loud noises from the motor operation and noises from the friction between the lifting wire rope and the hook connection structure. Long-term operation can easily cause hearing damage to personnel. Therefore, the market urgently needs to develop a silent crane to help people solve the existing problems. Utility Model Content

[0004] The purpose of the utility model is to provide a silent crane to solve the problems mentioned in the above background technology that the current electric hoist has high noise during motor operation, noise generated by friction between the lifting wire rope and the hook connection structure, and hearing damage to personnel during long-term operation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silent crane, comprising an electric hoist, a wire guide movably connected to the front end opening of the electric hoist, a fixed end of a wire rope is fixedly arranged in the middle of the rear end of the electric hoist, a sound insulation box is fixedly arranged on the outside of the electric hoist, a sound-absorbing material layer is fixedly arranged on the inner end surface of the sound insulation box, a strip opening is arranged at the front end of the middle part of the lower end surface of the sound insulation box, a first wear-resistant sound-absorbing tube is movably connected in the strip opening, a wire rope is connected to the lower end of the sound insulation box, a second wear-resistant sound-absorbing tube is fixedly arranged at the rear end of the middle part of the lower end surface of the sound insulation box, a hook connector is movably connected to the middle part of the wire rope, a rotating roller is rotatably connected to the inside of the hook connector, and a wear-resistant rubber layer is fixedly arranged on the rotating roller.

[0006] Preferably, one end of the steel wire rope passes through the first wear-resistant sound-absorbing tube and the wire guide in sequence and is fixedly connected to the winch in the electric hoist, and the other end of the steel wire rope passes through the second wear-resistant sound-absorbing tube and is fixedly connected to the fixed end of the steel wire rope at the rear end of the electric hoist.

[0007] Preferably, the upper end of the first wear-resistant sound-absorbing tube extends to the interior of the sound insulation box and is fixedly connected to the lower end of the wire guide via an L-shaped connecting rod.

[0008] Preferably, a hook is fixedly connected to the lower end of the hook connector, and wear-resistant hoses are fixedly connected to the middle parts of both sides of the hook connector.

[0009] Preferably, the middle portion of the steel wire rope sequentially passes through the wear-resistant hose on one side of the hook connector to extend into the interior of the hook connector and passes through the lower end of the rotating roller before passing out from the wear-resistant hose on the other side of the hook connector.

[0010] Preferably, a fixed shaft is rotatably connected to the middle of the rotating roller, and the front and rear ends of the fixed shaft are respectively fixedly connected to the front and rear end surfaces inside the hook connector.

[0011] Preferably, a moving device is fixedly connected to the upper end of the sound insulation box, and a steel frame is movably connected to the upper end of the moving device.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a soundproof box is fixedly arranged on the outside of the electric hoist through the arrangement of a soundproof box, a steel wire rope is connected to the lower end of the soundproof box, one end of the steel wire rope passes through the first wear-resistant sound-absorbing tube and the wire guide in sequence and is fixedly connected to the winch in the electric hoist, the other end of one end of the steel wire rope passes through the second wear-resistant sound-absorbing tube and is fixedly connected to the fixed end of the steel wire rope at the rear end of the electric hoist, the contact position between the steel wire rope and the lower end surface of the soundproof box is separated by the first wear-resistant sound-absorbing tube 203 and the second wear-resistant sound-absorbing tube, respectively, so that the inside of the first wear-resistant sound-absorbing tube and the second wear-resistant sound-absorbing tube are in contact with the steel wire rope to eliminate friction noise, and a sound-absorbing material layer is fixedly arranged on the inner end surface of the soundproof box, and the noise of the motor inside the electric hoist when working is isolated inside the soundproof box by the sound-absorbing material layer.

[0014] 2. In the utility model, through the provision of wear-resistant hoses, the middle part of the wire rope passes through the wear-resistant hose on one side of the hook connector in turn, extends to the inside of the hook connector, and passes through the lower end of the rotating roller and then passes out from the wear-resistant hose on the other side of the hook connector. The two wear-resistant hoses are used to guide the position where the wire rope passes into the hook connector and the position where the wire rope passes out of the hook connector and to separate the wire rope from the hook connector, thereby eliminating the noise generated by the wire rope hitting the hook connector when it moves.

[0015] 3. In the utility model, through the provision of a wear-resistant rubber layer, a fixed shaft is rotatably connected to the middle of the rotating roller, and the front and rear ends of the fixed shaft are respectively fixedly connected to the front and rear end surfaces inside the hook connector. The wire rope passes through the lower end of the rotating roller inside the hook connector. When the wire rope moves, it can drive the rotating roller to rotate, thereby ensuring that the wire rope moves smoothly inside the hook connector. At the same time, the wear-resistant rubber layer on the rotating roller contacts the wire rope, thereby reducing the friction noise between the wire rope and the rotating roller when it moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a silent crane of the utility model;

[0017] Figure 2 It is the main sectional view of the utility model;

[0018] Figure 3 It is a side sectional view of the utility model;

[0019] Figure 4 It is an enlarged view of the detail A of the present utility model.

[0020] In the figure: 1. electric hoist; 101. wire rope; 102. wire guide; 103. fixed end of wire rope; 2. sound insulation box; 201. sound absorbing material layer; 202. strip opening; 203. first wear-resistant sound absorbing tube; 204. second wear-resistant sound absorbing tube; 205. L-shaped connecting rod; 3. hook connector; 301. hook; 302. wear-resistant hose; 4. rotating roller; 401. fixed shaft; 402. wear-resistant rubber layer; 5. moving device; 6. steel frame. 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 of the embodiments.

[0022] See also Figure 1-4 The utility model provides an embodiment: a silent crane, comprising an electric hoist 1, a wire guide 102 is movably connected to the front end opening of the electric hoist 1, a wire rope fixed end 103 is fixedly arranged in the middle of the rear end of the electric hoist 1, a sound insulation box 2 is fixedly arranged on the outside of the electric hoist 1, a sound absorbing material layer 201 is fixedly arranged on the inner end surface of the sound insulation box 2, a strip opening 202 is arranged at the front end of the middle part of the lower end surface of the sound insulation box 2, a first wear-resistant sound-absorbing tube 203 is movably connected in the strip opening 202, a wire rope 101 is connected to the lower end of the sound insulation box 2, a second wear-resistant sound-absorbing tube 204 is fixedly arranged at the middle rear end of the lower end surface of the sound insulation box 2, a hook connector 3 is movably connected to the middle part of the wire rope 101, a rotating roller 4 is rotatably connected to the hook connector 3, and a wear-resistant rubber layer 402 is fixedly arranged on the rotating roller 4.

[0023] Furthermore, one end of the steel wire rope 101 passes through the first wear-resistant sound-absorbing tube 203 and the wire guide 102 in sequence and is fixedly connected to the winch in the electric hoist 1, and the other end of the steel wire rope 101 passes through the second wear-resistant sound-absorbing tube 204 and is fixedly connected to the fixed end 103 of the steel wire rope at the rear end of the electric hoist 1. The contact position between the steel wire rope 101 and the lower end surface of the sound insulation box 2 is separated by the first wear-resistant sound-absorbing tube 203 and the second wear-resistant sound-absorbing tube 204, respectively, so that the inside of the first wear-resistant sound-absorbing tube 203 and the second wear-resistant sound-absorbing tube 204 are in contact with the steel wire rope 101 to eliminate friction noise.

[0024] Furthermore, the upper end of the first wear-resistant sound-absorbing tube 203 extends to the inside of the soundproof box 2 and is fixedly connected to the lower end of the wire guide 102 through the L-shaped connecting rod 205. When the electric hoist 1 is working, the wire guide 102 guides the lowering and winding of the wire rope 101. At the same time, the wire guide 102 drives the L-shaped connecting rod 205 to move synchronously, thereby making the first wear-resistant sound-absorbing tube 203 move in the strip opening 202, ensuring that the wire rope 101 remains vertical when passing through the first wear-resistant sound-absorbing tube 203, reducing friction and thereby reducing friction noise.

[0025] Furthermore, a hook 301 is fixedly connected to the lower end of the hook connector 3 , and wear-resistant hoses 302 are fixedly connected to the middle of both sides of the hook connector 3 .

[0026] Furthermore, the middle part of the wire rope 101 passes through the wear-resistant hose 302 on one side of the hook connector 3 in turn, extends to the inside of the hook connector 3, and passes through the wear-resistant hose 302 on the other side of the hook connector 3 after passing through the lower end of the rotating roller 4. The two wear-resistant hoses 302 guide the position where the wire rope 101 passes through the hook connector 3 and the position where the wire rope 101 passes through the hook connector 3, and separate the wire rope 101 from the hook connector 3, thereby eliminating the noise generated by the wire rope 101 hitting the hook connector 3 when it moves.

[0027] Furthermore, a fixed shaft 401 is rotatably connected in the middle of the rotating roller 4, and the front and rear ends of the fixed shaft 401 are respectively fixedly connected to the front and rear end surfaces inside the hook connector 3. The wire rope 101 passes through the lower end of the rotating roller 4 inside the hook connector 3. When the wire rope 101 moves, it can drive the rotating roller 4 to rotate, thereby ensuring that the wire rope 101 moves smoothly inside the hook connector 3. At the same time, the wear-resistant rubber layer 402 on the rotating roller 4 contacts the wire rope 101, thereby reducing the friction noise between the wire rope 101 and the rotating roller 4 when the wire rope 101 moves.

[0028] Furthermore, a moving device 5 is fixedly connected to the upper end of the sound insulation box 2 , and a steel frame 6 is movably connected to the upper end of the moving device 5 .

[0029] Working principle: When in use, a soundproof box 2 is fixedly arranged on the outside of the electric hoist 1, and a steel wire rope 101 is connected to the lower end of the soundproof box 2. One end of the steel wire rope 101 passes through the first wear-resistant sound-absorbing tube 203 and the wire guide 102 in sequence and is fixedly connected to the winch in the electric hoist 1. The other end of the steel wire rope 101 passes through the second wear-resistant sound-absorbing tube 204 and is fixedly connected to the fixed end 103 of the steel wire rope at the rear end of the electric hoist 1. The contact position between the steel wire rope 101 and the lower end surface of the soundproof box 2 is separated by the first wear-resistant sound-absorbing tube 203 and the second wear-resistant sound-absorbing tube 204, respectively, so that the inside of the first wear-resistant sound-absorbing tube 203 and the second wear-resistant sound-absorbing tube 204 are in contact with the steel wire rope 101 to eliminate friction noise. A sound-absorbing material layer 201 is fixedly arranged on the inner end surface of the soundproof box 2. The noise of the motor inside the electric hoist 1 when working is isolated from the inside of the soundproof box 2 by the sound-absorbing material layer 201. The middle part of the wire rope 101 passes through the wear-resistant hose 302 on one side of the hook connector 3 in turn, extends to the inside of the hook connector 3, and passes through the wear-resistant hose 302 on the other side of the hook connector 3 after passing through the lower end of the rotating roller 4. The two wear-resistant hoses 302 guide the wire rope 101 to pass through the hook connector 3 and the wire rope 101 to pass through the hook connector 3, and separate the wire rope 101 from the hook connector 3, thereby eliminating the noise generated by the wire rope 101 hitting the hook connector 3 when it moves. The wire rope 101 passes through the lower end of the rotating roller 4 inside the hook connector 3, and the rotating roller 4 can be driven to rotate when the wire rope 101 moves, thereby ensuring that the wire rope 101 moves smoothly inside the hook connector 3. At the same time, the wear-resistant rubber layer 402 on the rotating roller 4 contacts the wire rope 101, thereby reducing the friction noise between the wire rope 101 and the rotating roller 4 when it moves.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A silent crane, comprising an electric hoist (1), characterized in that: A wire guide (102) is movably connected to the front opening of the electric hoist (1), a steel wire rope fixed end (103) is fixedly arranged in the middle of the rear end of the electric hoist (1), a sound insulation box (2) is fixedly arranged on the outside of the electric hoist (1), a sound absorbing material layer (201) is fixedly arranged on the inner end surface of the sound insulation box (2), a strip opening (202) is arranged at the middle front end of the lower end surface of the sound insulation box (2), a first wear-resistant sound absorbing tube (203) is movably connected in the strip opening (202), a steel wire rope (101) is connected to the lower end of the sound insulation box (2), a second wear-resistant sound absorbing tube (204) is fixedly arranged at the middle rear end of the lower end surface of the sound insulation box (2), a hook connector (3) is movably connected to the middle of the steel wire rope (101), a rotating roller (4) is rotatably connected to the inside of the hook connector (3), and a wear-resistant rubber layer (402) is fixedly arranged on the rotating roller (4).

2. A silent crane according to claim 1, characterized in that: One end of the steel wire rope (101) passes through the first wear-resistant sound-absorbing tube (203) and the wire guide (102) in sequence and is fixedly connected to the winch in the electric hoist (1), and the other end of the steel wire rope (101) passes through the second wear-resistant sound-absorbing tube (204) and is fixedly connected to the steel wire rope fixed end (103) at the rear end of the electric hoist (1).

3. A silent crane according to claim 1, characterized in that: The upper end of the first wear-resistant sound-absorbing tube (203) extends into the interior of the sound insulation box (2) and is fixedly connected to the lower end of the wire guide (102) via an L-shaped connecting rod (205).

4. A silent crane according to claim 1, characterized in that: The lower end of the hook connector (3) is fixedly connected to a hook (301), and the middle parts of both sides of the hook connector (3) are fixedly connected to wear-resistant hoses (302).

5. A silent crane according to claim 4, characterized in that: The middle portion of the steel wire rope (101) sequentially passes through the wear-resistant hose (302) on one side of the hook connector (3) to extend into the interior of the hook connector (3) and passes through the lower end of the rotating roller (4) before passing out from the wear-resistant hose (302) on the other side of the hook connector (3).

6. A silent crane according to claim 1, characterized in that: A fixed shaft (401) is rotatably connected to the middle of the rotating roller (4), and the front and rear ends of the fixed shaft (401) are respectively fixedly connected to the front and rear end surfaces inside the hook connector (3).

7. A silent crane according to claim 1, characterized in that: The upper end of the soundproof box (2) is fixedly connected to a moving device (5), and the upper end of the moving device (5) is movably connected to a steel frame (6).

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