Manual winch for crane

Abstract

The utility model 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 utility model belongs to the technical field of belt transportation, and relates to a manual hoist for a crane. BACKGROUND

[0002] A crane is a mechanical device used for lifting, transporting and handling heavy objects, and can realize the needs of lifting or dragging materials on a construction site. It is mainly composed of a steel wire rope, a hoist, an electric hoist, a hydraulic system, a control system and other parts. Among these components, the hoist plays a key role, and it lifts or lowers heavy objects by winding and releasing the steel wire rope.

[0003] In the patent with the publication number CN208249748U, a manual hoist is disclosed, which includes a rotating shaft, a winding drum arranged on the outer periphery of the rotating shaft and in rotational cooperation with the rotating shaft, a lifting rope with one end fixed to the outer periphery of the winding drum and the other end used for connecting a material accumulation barrel, a rocker arm arranged at the end of the winding drum and used for driving the winding drum to rotate, and a connecting assembly arranged at the axial end of the rotating shaft and used for connecting with the rack of a belt conveyor. The connecting assembly and the rocker arm are respectively located at the axial ends of the winding drum. The manual hoist provided by the utility model can fix the device to the outer side of the belt conveyor according to the severity of material accumulation at a certain position on the belt conveyor, drive the winding drum arranged on the outer periphery of the rotating shaft to rotate by manually rocking the rocker arm, make the lifting rope on the winding drum wrap around the outer periphery of the winding drum, and then drive the material accumulation barrel at the lower end of the lifting rope to move upwards, realizing the transfer of the accumulated material, effectively improving the work efficiency of the operator, and ensuring the safety of the working environment. In the application, the transfer of the accumulated material is realized by manually rocking the rocker arm. This arrangement makes it difficult to control the direction of the lifting rope by manually rotating the rocker arm, resulting in random placement of the lifting rope on the winding drum, which may cause the lifting rope to knot, twist or wear, thereby reducing the service life of the steel wire rope. SUMMARY

[0004] To make up for the above shortcomings, the utility model provides a manual hoist for a crane, aiming to improve the problem of random placement of the lifting rope on the winding drum, causing the lifting rope to knot, twist or wear and affecting the service life.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A hand winch for a crane, comprising a support, a protective shell is fixedly connected to one side of the outer wall of the support, a handle is rotatably connected in the protective shell, a driving wheel is fixedly connected to one end of the handle, a driven wheel is rotatably connected in the protective shell, the driven wheel is engaged with the driving wheel, a rotating rod is fixedly connected in the driven wheel, a concave wheel one is fixedly connected to the outer wall of the rotating rod, a transmission belt is arranged on the outer wall of the concave wheel one, a concave wheel two is arranged on the inner wall of the transmission belt, a bidirectional screw rod is fixedly connected in the concave wheel two, both ends of the bidirectional screw rod are rotatably connected in the support, a sliding block is threadedly connected to the outer wall of the bidirectional screw rod, the lower surface of the sliding block is slidably connected to the outer wall of the support, two symmetrical guide wheels are rotatably connected in the sliding block, a wire roller is rotatably connected in the support, and a limiting assembly is arranged in the rotating rod.

[0007] Further, the limiting assembly comprises a rectangular block, and the outer wall of the rectangular block is slidably connected in the rotating rod.

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

[0009] Further, the outer wall of the baffle is fixedly connected with a sliding rod, and the outer wall of the sliding rod is slidably connected in the wire roller.

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

[0011] Further, one end of the spring is fixedly connected in the wire roller, and the other end of the spring is fixedly connected to the outer wall of the sliding rod.

[0012] Further, the outer wall of the connecting rod is slidably connected in the wire roller, and the other end of the connecting rod is fixedly connected with a rack.

[0013] Further, a rotating shaft is fixedly connected in the wire roller, a gear is rotatably connected to the outer wall of the rotating shaft, and the gear is engaged with the rack.

[0014] The utility model discloses beneficial effects:

[0015] 1. The utility model discloses a handle is rotated and drives the driving wheel rotation to realize the driving effect, and then the rotation of the driven wheel drives the rotation of the rotating rod, and then drives the concave wheel no. 1 rotation, and then the transmission belt drives the concave wheel no. 2 rotation on the other side, realizes the linkage effect, and then drives the bidirectional screw rotation, makes the sliding block slide on the outer wall, and then the rotation of the internal guide wheel conveys the lifting line, realizes the effect of reducing friction and protecting the lifting line, and finally the sliding of the sliding block regularly retracts and extends the lifting line, solves the problem that the lifting rope is randomly placed on the wire roller and influences the service life, achieves the effect of regularly arranging the wire harness and avoiding knotting, distortion or abrasion.

[0016] 2. The utility model discloses a baffle pushes the rectangular block on both sides and the sliding rod movement, makes the sliding rod push link and rack movement, drives the gear rotation on the outer wall of the rotating shaft through the rack, simultaneously makes the rectangular block on both sides move out from the inside of the rotating rod, realizes the effect of linkage, can thus detach the wire roller, when installing, first pulls the baffle, then utilizes the spring and pops into the inside of the rotating rod rectangular block, completes the dismounting process, reaches the effect that the wire roller is disassembled and replaced, thereby conveniently replacing the lifting line. DRAWINGS

[0017] Figure 1 It is the main body structure schematic diagram of the utility model of a kind of crane manual hoist;

[0018] Figure 2 It is the support section schematic diagram of the utility model of a kind of crane manual hoist;

[0019] Figure 3 It is the sliding block section schematic diagram of the utility model of a kind of crane manual hoist;

[0020] Figure 4 It is the wire roller section schematic diagram of the utility model of a kind of crane manual hoist.

[0021] In the drawing: 1, support; 2, protective shell; 3, handle; 4, driving wheel; 5, driven wheel; 6, rotating rod; 7, concave wheel no. 1; 8, transmission belt; 9, bidirectional screw; 10, sliding block; 11, guide wheel; 12, wire roller; 13, rectangular block; 14, baffle; 15, sliding rod; 16, link; 17, spring; 18, rack; 19, rotating shaft; 20, gear; 21, concave wheel no. 2. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further illustrated below in combination with the drawings and technical solutions.

[0023] Refer to Figures 1-3The utility model provides an embodiment: a manual hoist for a crane, including support 1, the outer wall one side of support 1 is fixedly connected with protective housing 2, the inside rotation of protective housing 2 is connected with handle 3, one end of handle 3 is fixedly connected with driving wheel 4, the inside rotation of protective housing 2 is connected with driven wheel 5, and driven wheel 5 is engaged with driving wheel 4, and the inside fixed connection of driven wheel 5 has rotary lever 6, the outer wall fixed connection of rotary lever 6 has concave wheel one 7, the outer wall of concave wheel one 7 is provided with transmission belt 8, the inner wall of transmission belt 8 is provided with concave wheel two 21, and the inside fixed connection of concave wheel two 21 has bidirectional screw rod 9, and the both ends of bidirectional screw rod 9 are rotatably connected in the inside of support 1, and the outer wall screw connection of bidirectional screw rod 9 has sliding block 10, and the lower surface sliding connection of sliding block 10 is in the outer wall of support 1, the inside rotation of sliding block 10 is connected with two symmetrical guide wheels 11, and the inside rotation of support 1 is connected with wire roller 12, and the inside of rotary lever 6 is provided with limit component;

[0024] Specifically, first, the wire is clamped between the two guide wheels 11 through the sliding block 10, one end is connected with the crane, then the handle 3 is rotated, the driving wheel 4 starts to rotate in the protective housing 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 rotation of the rotary lever 6, in turn, the concave wheel one 7 starts to rotate, the rotation of the concave wheel one 7 drives the rotation of the other side of the concave wheel two 21 through the transmission belt 8, the rotation of the concave wheel two 21 further drives the rotation of the bidirectional screw rod 9, and the bidirectional screw rod 9 and the sliding block 10 are in threaded connection, therefore, the rotation of the bidirectional screw rod 9 makes the sliding block 10 slide on its outer wall, in this process, the guide wheels 11 in the sliding block 10 start to rotate, the wire is conveyed, and the effect of regular take-up and pay-off is achieved.

[0025] Referring to Figure 4 , the limit component includes a rectangular block 13, and the outer wall of the rectangular block 13 is slidably connected in the inside of the rotary lever 6.

[0026] Specifically, the wire roller 12 can be rotated with the rotary lever 6 through the rectangular block 13, and the effect of connection is achieved.

[0027] Referring to 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, the other side of the outer wall of the baffle 14 is fixedly connected with a sliding rod 15, the outer wall of the sliding rod 15 is slidingly connected in the inner part of the wire roller 12, the outer wall of the sliding rod 15 is fixedly connected with 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 in the inner part of the wire roller 12, the other end of the spring 17 is fixedly connected to the outer wall of the sliding rod 15, the outer wall of the connecting rod 16 is slidingly connected in the inner part of the wire roller 12, the other end of the connecting rod 16 is fixedly connected with a rack 18, the inner part of the wire roller 12 is fixedly connected with a rotating shaft 19, the outer wall of the rotating shaft 19 is rotatably connected with a gear 20, the gear 20 is engaged with the rack 18;

[0028] Specifically, by pulling the baffle 14 to drive the rectangular block 13 to move, the sliding rod 15 is moved to realize the operation of the whole device. During the movement of the baffle 14 driving the rectangular block 13 and the sliding rod 15, the gear 20 also starts to operate. The connection of 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, realizing the simultaneous movement of the rectangular blocks 13 on both sides. When it is necessary to take out the wire roller 12, the baffle 14 is only needed to be pressed to start the operation. Then, the spring 17 plays a role to pop out the rectangular block 13 from the inner part of the rotating rod 6. At this time, the wire roller 12 can be smoothly taken out from the rotating rod 6. During the installation process, the baffle 14 is first pressed to make the spring 17 push the rectangular block 13 to move to the inner part of the rotating rod 6, thereby achieving the effect of disassembly and assembly.

[0029] Working principle: when need to use to the crane with manual hoist, first put the line through the slider 10 connected to the crane, and then by rotating the handle 3, thus driving the driving wheel 4 in the protection shell 2 inside rotation, and then through the meshing relationship drive the driven wheel 5 rotation, again through the driven wheel 5 rotation drive the rotation rod 6 rotation, thus through the rotation rod 6 drive the concave wheel 7 rotation, thus through the transmission belt 8 drive the other side of the concave wheel 21 rotation, and then drive the bidirectional screw 9 rotation, again through the bidirectional screw 9 and the slider 10 threaded connection relationship, make the slider 10 in the outer wall of the bidirectional screw 9 sliding, thus drive the slider 10 inside the guide wheel 11 rotation to the line conveying, to reduce the line friction, the effect of protecting the line, and then through the slider 10 to the line regularly, then press the baffle 14, thus through the baffle 14 drive both sides of the rectangular block 13 and the slide rod 15 movement, again through the slide rod 15 movement push the connecting rod 16 and the rack 18 movement, thus drive the gear 20 in the outer wall of the rotating shaft 19 rotation, and then drive the other side of the rack 18 movement, make both sides of the rectangular block 13 simultaneously move out of the inside of the rotating rod 6, then you can take down the line roller 12, when installing, first press the baffle 14, then through the spring 17 rectangular block 13 into the inside of the rotating rod 6, reached the effect of disassembly.

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 inside the protective shell (2). A drive wheel (4) is fixedly connected to one end of the handle (3). A driven wheel (5) is rotatably connected inside the protective shell (2). The driven wheel (5) meshes with the drive 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 provided on the outer wall of the concave wheel (7). The inner wall of the transmission belt (8) A concave wheel 2 (21) is provided, and a bidirectional screw 9 is fixedly connected inside the concave wheel 2 (21). Both ends of the bidirectional screw 9 are rotatably connected inside 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). A limit component is provided inside the rotating rod (6).

2. The manual winch for a crane according to claim 1, characterized in that: The limiting component includes a rectangular block (13), the outer wall of which is slidably connected to the inside of the rotating rod (6).

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

4. A manual winch for a crane according to claim 3, characterized in that: A slide rod (15) is fixedly connected to the other side of the outer wall of the baffle (14), and the outer wall of the slide 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: A connecting rod (16) is fixedly connected to the outer wall of the slide rod (15), and a spring (17) is sleeved on one end of the connecting rod (16).

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 roller (12), and the other end of the spring (17) is fixedly connected to the outer wall of the slide 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 roller (12) is fixedly connected to a rotating shaft (19), and the outer wall of the rotating shaft (19) is rotatably connected to a gear (20), which meshes with a rack (18).

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