Manual winch for crane

Abstract

The invention belongs to the technical field of belt transportation, and particularly relates to a manual winch for a crane, which comprises a support, a protective shell is fixedly connected to one side of the outer wall of the support, a handle is rotatably connected to the inside of the protective shell, a driving wheel is fixedly connected to one end of the handle, a driven wheel is rotatably connected to the inside of the protective shell, and the driven wheel is meshed with the driving wheel. A transmission belt is arranged on the outer wall of the first concave wheel; a second concave wheel is arranged on the inner wall of the transmission belt; a two-way screw rod is fixedly connected to the interior of the second concave wheel; the two ends of the two-way screw rod are rotationally connected to the interior of the support; a sliding block is in threaded connection with the outer wall of the two-way screw rod, the lower surface of the sliding block is slidably connected to the outer wall of the support, two symmetrical guide wheels are rotationally connected into the sliding block, a line roller is rotationally connected into the support, and a limiting assembly is arranged in the rotating rod.

Description

Technical Field

[0001] The invention belongs to the technical field of belt transportation and relates to a manual winch for a crane. Background Art

[0002] A crane is a mechanical device used for lifting, transporting, loading and unloading heavy objects. It is usually used on construction sites to meet the needs of lifting or dragging materials. It is mainly composed of wire ropes, winches, electric hoists, hydraulic systems, control systems and other parts. Among these parts, the winch plays a key role, which lifts or lowers heavy objects by winding and releasing the wire rope.

[0003] A manual winch is disclosed in the patent with announcement number CN208249748U, which includes a rotating shaft, a drum arranged on the outer periphery of the rotating shaft and rotating with the rotating shaft, a lifting rope with one end fixed to the outer periphery of the drum and the other end used to connect to the material storage bucket, a rocker arm arranged at the end of the drum and used to drive the drum to rotate, and a connecting assembly arranged at the axial end of the rotating shaft and used to be connected to the belt conveyor frame, and the connecting assembly and the rocker arm are respectively located at the axial ends of the drum. The manual winch provided by the invention can be conveniently fixed to the outer side of the belt conveyor through a connecting component according to the severity of material accumulation in a certain part of the belt conveyor, and the drum arranged on the outer periphery of the rotating shaft is driven to rotate by manually shaking the rocker arm, so that the lifting rope on the drum is wrapped around the outer periphery of the drum, thereby driving the material accumulation bucket at the lower end of the lifting rope to move upward, thereby realizing the transfer of accumulated materials, effectively improving the work efficiency of the operators and ensuring the safety of the working environment. In this application, the transfer of accumulated materials is realized by manually shaking the rocker arm. Such an arrangement and then manually rotating the rocker arm makes it difficult to control the direction of the lifting rope, resulting in the lifting rope being placed randomly on the wire roll, which may cause the lifting rope to be knotted, twisted or worn, thereby reducing the service life of the wire rope. Summary of the invention

[0004] In order to make up for the above shortcomings, the present invention provides a manual winch for a crane, aiming to improve the problem that the lifting rope is randomly placed on the wire roll, causing the lifting rope to be knotted, twisted or worn, affecting the service life.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A manual winch for a crane comprises a support, wherein one side of the outer wall of the support is fixedly connected to a protective shell, the interior of the protective shell is rotatably connected to a handle, one end of the handle is fixedly connected to a driving wheel, the interior of the protective shell is rotatably connected to a driven wheel, the driven wheel meshes with the driving wheel, the interior of the driven wheel is fixedly connected to a rotating rod, the outer wall of the rotating rod is fixedly connected to a concave wheel 1, the outer wall of the concave wheel 1 is provided with a transmission belt, the inner wall of the transmission belt is provided with a concave wheel 2, the interior of the concave wheel 2 is fixedly connected to a bidirectional screw, both ends of the bidirectional screw are rotatably connected to the interior of the support, the outer wall of the bidirectional screw is threadedly connected to a slider, the lower surface of the slider is slidably connected to the outer wall of the support, the interior of the slider is rotatably connected to two symmetrical guide wheels, the interior of the support is rotatably connected to a wire roller, and a limiting assembly is provided inside the rotating rod.

[0007] Furthermore, the limiting assembly comprises a rectangular block, and an outer wall of the rectangular block is slidably connected to the inside of the rotating rod.

[0008] Furthermore, a baffle is fixedly connected to the outer wall of the rotating rod, and one side of the outer wall of the baffle is attached to the outer wall of the rectangular block.

[0009] Furthermore, a sliding rod is fixedly connected to the other side of the outer wall of the baffle, and the outer wall of the sliding rod is slidably connected to the inside of the wire roll.

[0010] Furthermore, a connecting rod is fixedly connected to the outer wall of the sliding rod, and a spring is sleeved on one end of the connecting rod.

[0011] Furthermore, one end of the spring is fixedly connected to the inside of the wire roll, and the other end of the spring is fixedly connected to the outer wall of the sliding rod.

[0012] Furthermore, the outer wall of the connecting rod is slidably connected to the inside of the wire roll, and the other end of the connecting rod is fixedly connected to a rack.

[0013] Furthermore, a rotating shaft is fixedly connected to the interior of the wire roll, a gear is rotatably connected to the outer wall of the rotating shaft, and the gear is meshed with a rack.

[0014] Beneficial effects of the present invention:

[0015] 1. In the present invention, the driving wheel is driven to rotate by rotating the handle, thereby driving the driven wheel to rotate, thereby achieving a driving effect, and then the rotation of the driven wheel drives the rotating rod to rotate, thereby driving the concave wheel 1 to rotate, and then the concave wheel 2 on the other side is driven to rotate by the transmission belt to achieve a linkage effect, and then the bidirectional screw is driven to rotate, so that the slider slides on its outer wall, and then the internal guide wheel is rotated to transport the lifting line, thereby achieving the effect of reducing friction and protecting the lifting line, and finally the lifting line is regularly retracted and released by the sliding of the slider, which solves the problem of arbitrarily placing the lifting rope on the line roller and affecting the service life, and achieves the effect of regularly arranging the wire harness to avoid knotting, twisting or wear.

[0016] 2. In the present invention, the baffle is used to push the rectangular blocks and the sliding rod on both sides to move, so that the sliding rod pushes the connecting rod and the rack to move, and the rack drives the gear to rotate on the outer wall of the rotating shaft, and at the same time, the rectangular blocks on both sides are moved out from the inside of the rotating rod to achieve a linkage effect, so that the wire roll can be removed. During installation, the baffle is first pulled, and then the rectangular block is bounced into the inside of the rotating rod by the spring to complete the disassembly and assembly process, so as to achieve the effect of disassembling and assembling the wire roll, thereby facilitating the replacement of the lifting line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of a manual winch for a crane of the present invention;

[0018] Figure 2 It is a cross-sectional schematic diagram of a support of a manual winch for a crane according to the present invention;

[0019] Figure 3 It is a cross-sectional schematic diagram of a slider of a manual winch for a crane of the present invention;

[0020] Figure 4 The present invention is a schematic cross-sectional diagram of a wire roll of a manual winch for a crane.

[0021] In the figure: 1. support; 2. protective shell; 3. handle; 4. driving wheel; 5. driven wheel; 6. rotating rod; 7. cam wheel 1; 8. transmission belt; 9. bidirectional screw; 10. slider; 11. guide wheel; 12. wire roll; 13. rectangular block; 14. baffle; 15. sliding rod; 16. connecting rod; 17. spring; 18. rack; 19. rotating shaft; 20. gear; 21. cam wheel 2. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and technical solutions.

[0023] Reference Figure 1-3, an embodiment of the present invention: a manual winch for a crane, comprising a support 1, a protective shell 2 is fixedly connected to one side of the outer wall of the support 1, a handle 3 is rotatably connected inside the protective shell 2, one end of the handle 3 is fixedly connected to a driving wheel 4, a driven wheel 5 is rotatably connected inside the protective shell 2, the driven wheel 5 is meshed with the driving wheel 4, a rotating rod 6 is fixedly connected inside the driven wheel 5, a concave wheel 7 is fixedly connected to the outer wall of the rotating rod 6, a transmission belt 8 is arranged on the outer wall of the concave wheel 7, a concave wheel 21 is arranged on the inner wall of the transmission belt 8, a bidirectional screw 9 is fixedly connected inside the concave wheel 21, both ends of the bidirectional screw 9 are rotatably connected to the inside of the support 1, a slider 10 is threadedly connected to the outer wall of the bidirectional screw 9, the lower surface of the slider 10 is slidably connected to the outer wall of the support 1, two symmetrical guide wheels 11 are rotatably connected inside the slider 10, a wire roller 12 is rotatably connected inside the support 1, and a limiting component is arranged inside the rotating rod 6;

[0024] Specifically, first, the lifting line is passed through the slider 10 and clamped between the two guide wheels 11, and one end is connected to the crane. Then the handle 3 is turned, and the driving wheel 4 starts to rotate inside the protective shell 2. The rotation of the driving wheel 4 drives the rotation of the driven wheel 5 through the meshing relationship. The rotation of the driven wheel 5 further drives the rotating rod 6 to rotate, and then prompts the cam wheel 1 7 to start rotating. The rotation of the cam wheel 1 7 drives the cam wheel 2 21 on the other side to rotate through the transmission belt 8. The rotation of the cam wheel 21 further drives the bidirectional screw 9 to rotate. There is a threaded connection relationship between the bidirectional screw 9 and the slider 10. Therefore, the rotation of the bidirectional screw 9 makes the slider 10 slide on its outer wall. In this process, the guide wheel 11 inside the slider 10 starts to rotate to transport the lifting line, thereby achieving the effect of regular reeling and releasing of the line.

[0025] Reference Figure 4 The limiting assembly includes a rectangular block 13, and the outer wall of the rectangular block 13 is slidably connected to the inside of the rotating rod 6;

[0026] Specifically, the rectangular block 13 can make the wire roll 12 rotate along with the rotation of the rotating rod 6, thereby achieving a connection effect.

[0027] Reference Figure 4The outer wall of the rotating rod 6 is fixedly connected with a baffle 14, one side of the outer wall of the baffle 14 is attached to the outer wall of the rectangular block 13, and the other side of the outer wall of the baffle 14 is fixedly connected with a slide bar 15, the outer wall of the slide bar 15 is slidably connected to the inside of the line roller 12, and the outer wall of the slide bar 15 is fixedly connected to a connecting rod 16, one end of the connecting rod 16 is sleeved with a spring 17, one end of the spring 17 is fixedly connected to the inside of the line roller 12, the other end of the spring 17 is fixedly connected to the outer wall of the slide bar 15, and the outer wall of the connecting rod 16 is slidably connected to the inside of the line roller 12, the other end of the connecting rod 16 is fixedly connected with a rack 18, and the inside of the line roller 12 is fixedly connected with a rotating shaft 19, and the outer wall of the rotating shaft 19 is rotatably connected with a gear 20, and the gear 20 is meshed with the rack 18;

[0028] Specifically, the baffle 14 is pulled to drive the rectangular block 13 to move, thereby driving the slide bar 15 to move, and realizing the operation of the entire device. In the process of the baffle 14 driving the rectangular block 13 and the slide bar 15 to move, the gear 20 also starts to operate. The connection between the gear 20 and the outer wall of the rotating shaft 19 enables the movement of the baffle 14 to be converted into the rotation of the gear 20. This rotation will further drive the rack 18 on the other side to move, thereby realizing the simultaneous movement of the rectangular blocks 13 on both sides. When it is necessary to take out the wire roll 12, it is only necessary to press the baffle 14 to start its operation. Subsequently, the spring 17 takes effect and pops the rectangular block 13 out of the rotating rod 6. At this time, the wire roll 12 can be smoothly taken out from the rotating rod 6. During the installation process, the baffle 14 is first pressed to allow the spring 17 to push the rectangular block 13 to move to the inside of the rotating rod 6, thereby achieving the effect of disassembly and assembly.

[0029] Working principle: When it is necessary to use a manual winch for a crane, first pass the lifting line through the slider 10 and connect it to the crane, then turn the handle 3 to drive the driving wheel 4 to rotate inside the protective shell 2, and then drive the driven wheel 5 to rotate through the meshing relationship, and then drive the rotating rod 6 to rotate through the rotation of the driven wheel 5, so that the cam wheel 1 7 is driven to rotate through the rotating rod 6, and then the cam wheel 2 21 on the other side is driven to rotate through the transmission belt 8, and then the bidirectional screw 9 is driven to rotate, and then the threaded connection relationship between the bidirectional screw 9 and the slider 10 is used to make the slider 10 slide on the outer wall of the bidirectional screw 9, thereby driving the guide wheel 11 inside the slider 10 to rotate to control the lifting line The wire is transported, which reduces the friction of the wire and protects the wire. The wire is then regularly retracted and released through the slider 10, and then the baffle 14 is pressed, so that the rectangular blocks 13 and the slide bar 15 on both sides are moved through the baffle 14, and then the connecting rod 16 and the rack 18 are pushed to move through the movement of the slide bar 15, thereby driving the gear 20 to rotate on the outer wall of the rotating shaft 19, and then driving the rack 18 on the other side to move, so that the rectangular blocks 13 on both sides are moved out of the interior of the rotating rod 6 at the same time, and then the wire roll 12 can be removed. When installing, first press the baffle 14, and then the rectangular block 13 is bounced into the interior of the rotating rod 6 through the spring 17, so as to achieve the effect of disassembly and assembly.

Claims

1. A manual winch for a crane, comprising a support (1), characterized in that: A protective shell (2) is fixedly connected to one side of the outer wall of the support (1); a handle (3) is rotatably connected to the interior of the protective shell (2); one end of the handle (3) is fixedly connected to a driving wheel (4); a driven wheel (5) is rotatably connected to the interior of the protective shell (2); the driven wheel (5) is meshed with the driving wheel (4); a rotating rod (6) is fixedly connected to the interior of the driven wheel (5); a concave wheel (7) is fixedly connected to the outer wall of the rotating rod (6); a transmission belt (8) is provided on the outer wall of the concave wheel (7); and the inner wall of the transmission belt (8) is A second cam wheel (21) is provided, a bidirectional screw rod (9) is fixedly connected inside the second cam wheel (21), both ends of the bidirectional screw rod (9) are rotatably connected inside the support (1), a slider (10) is threadedly connected to the outer wall of the bidirectional screw rod (9), the lower surface of the slider (10) is slidably connected to the outer wall of the support (1), two symmetrical guide wheels (11) are rotatably connected inside the slider (10), a wire roller (12) is rotatably connected inside the support (1), and a limit position component is provided inside the rotating rod (6).

2. A manual winch for a crane according to claim 1, characterized in that: The limiting assembly comprises a rectangular block (13), the outer wall of the rectangular block (13) being slidably connected to the interior of the rotating rod (6).

3. A manual winch for a crane according to claim 2, characterized in that: The outer wall of the rotating rod (6) is fixedly connected with a baffle (14), and one side of the outer wall of the baffle (14) is in contact with the outer wall of the rectangular block (13).

4. A manual winch for a crane according to claim 3, characterized in that: A sliding rod (15) is fixedly connected to the other side of the outer wall of the baffle (14), and the outer wall of the sliding rod (15) is slidably connected to the inside of the wire roll (12).

5. A manual winch for a crane according to claim 4, characterized in that: The outer wall of the sliding rod (15) is fixedly connected with a connecting rod (16), and one end of the connecting rod (16) is sleeved with a spring (17).

6. A manual winch for a crane according to claim 5, characterized in that: One end of the spring (17) is fixedly connected to the inside of the wire roll (12), and the other end of the spring (17) is fixedly connected to the outer wall of the sliding rod (15).

7. A manual winch for a crane according to claim 6, characterized in that: The outer wall of the connecting rod (16) is slidably connected to the inside of the wire roll (12), and the other end of the connecting rod (16) is fixedly connected to a rack (18).

8. A manual winch for a crane according to claim 7, characterized in that: The inside of the wire roll (12) is fixedly connected with a rotating shaft (19), the outer wall of the rotating shaft (19) is rotatably connected with a gear (20), and the gear (20) is meshed with the rack (18).

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