Brake mechanism of light-load lever block

Abstract

The utility model relates to the technical field of lever blocks, in particular to a brake mechanism of a light-load lever block, which comprises a transmission box and a speed reduction box arranged on one side of the transmission box, the transmission box is connected with the speed reduction box through a connecting bolt, the transmission box comprises a box body, the top of the box body is fixedly connected with an upper lifting hook, and the upper lifting hook is fixedly connected with a lower lifting hook. The side, away from the speed reduction box, of the box body is rotationally connected with a handle, a hand chain wheel is arranged in an inner cavity of the box body, the outer surface of the hand chain wheel is sleeved with a hand chain, one end of the hand chain is fixedly connected with a lower lifting hook, the other end of the hand chain is fixedly connected with a lower lifting frame, and the side, away from the box body, of the handle is provided with a brake assembly. According to the utility model, the braking effect is better, so that the braking effect can be ensured when the braking is needed, and the serious influence on the operation safety and the operation efficiency due to the poor braking effect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lever hoists, in particular to a braking mechanism of a light-load lever hoist. Background Art

[0002] A light-load lever hoist is a manual lifting tool used to lift or move light objects. It is operated manually and uses the principle of leverage to lift heavy objects to a certain height. Light-load lever hoists usually have the characteristics of compact structure, simple operation, and easy carrying. They are suitable for light-duty operations such as homes, offices, and warehouses. The lifting capacity of a light-load lever hoist is generally less than 1 ton, and different specifications and models can be selected according to actual needs. At the same time, lever hoists are usually made of high-strength alloy materials with high wear resistance and corrosion resistance, ensuring their reliability and safety in various operating occasions.

[0003] At present, although the traditional light-load lever hoist has many advantages and is widely used, it still has some shortcomings. For example, its braking effect is not good. Therefore, it is difficult to ensure the braking effect when braking is required, which will have a serious impact on operation safety and operation efficiency. Therefore, a braking mechanism of a light-load lever hoist is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a braking mechanism for a light-load lever hoist, which has a better braking effect. Therefore, it can ensure the braking effect when braking is required, thereby avoiding serious impact on operation safety and operation efficiency due to poor braking effect, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A braking mechanism for a light-load lever hoist comprises a transmission box and a reduction box arranged on one side of the transmission box, the transmission box and the reduction box being connected by connecting bolts, the transmission box comprising a box body, the top of the box body being fixedly connected with an upper hook, the box body being rotatably connected with a handle on a side away from the reduction box, a hand chain wheel being provided in an inner cavity of the box body, a hand chain strip being sleeved on an outer surface of the hand chain wheel, one end of the hand chain strip being fixedly connected with a lower hook, and the other end being fixedly connected with a lower hanging frame, and a braking assembly being provided on a side of the handle away from the box body.

[0007] Preferably, a long axis passes through the center of the reduction box near the transmission box, and one end of the long axis near the transmission box passes through the transmission box and is fixedly connected to the hand chain wheel and the handle.

[0008] Preferably, the brake assembly includes a brake box fixedly connected to the outer wall of the handle, a driving gear is provided at the top of the inner cavity of the brake box, a driven gear is provided below the driving gear, the driving gear and the driven gear are meshed and connected through the gears thereon, and the central axes of the driving gear and the driven gear are rotatably connected to the rear wall of the brake box.

[0009] Preferably, a micro motor is provided on one side of the brake box, the output end of the micro motor passes through the side wall of the brake box and is fixedly connected to the central axis of the driving gear, and hinge rods are oppositely provided at the front edges of the driving gear and the driven gear.

[0010] Preferably, one end of the hinged rod away from the driving gear and the driven gear is fixedly connected to a connecting plate, pulleys are symmetrically provided at the upper and lower ends of the connecting plate, sliding grooves are symmetrically opened on the inner top wall and the inner bottom wall of the brake box, and the pulleys are respectively slidably connected to adjacent sliding grooves.

[0011] Preferably, a brake rod is fixedly connected to the center of one side wall of the connecting plate, one end of the brake rod passes through the side wall of the brake box and the side wall of the box body and extends to the inner cavity of the box body, and a brake friction pad is fixedly connected to the through end of the brake rod, and the brake friction pad and the hand chain wheel are arranged to correspond in position and have matching specifications.

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

[0013] In the utility model, the hand chain can be transmitted through the reduction box, the transmission box and the reduction box can be connected through the connecting bolts, the whole can be suspended through the upper hook, the material can be suspended through the lower hook and the lower hanging frame, the hand chain wheel can be driven to rotate through the handle, thereby driving the handle thereon to rotate at the same time, so as to lift or lower the material, and the brake assembly can provide a good braking effect, so it can ensure the braking effect when braking is needed, thereby avoiding serious impact on operation safety and operation efficiency due to poor braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is a side view of the utility model;

[0016] Figure 3 It is an exploded view of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the brake assembly of the utility model;

[0018] Figure 5 It is a schematic diagram of the lateral structure of the brake box of the utility model.

[0019] In the figure: 1, transmission box; 2, reduction box; 3, connecting bolts; 4, box body; 5, upper hook; 6, handle; 7, hand chain wheel; 8, hand chain; 9, lower hook; 10, lower hanging frame; 11, long shaft; 12, brake box; 13, driving gear; 14, driven gear; 15, micro motor; 16, hinged rod; 17, connecting plate; 18, pulley; 19, sliding groove; 20, brake rod; 21, brake friction plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0022] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] A braking mechanism of a light-load lever hoist comprises a transmission box 1 and a reduction box 2 arranged on one side of the transmission box 1, the transmission box 1 and the reduction box 2 are connected by connecting bolts 3, the transmission box 1 comprises a box body 4, an upper hook 5 is fixedly connected to the top of the box body 4, a handle 6 is rotatably connected to the side of the box body 4 away from the reduction box 2, a hand chain wheel 7 is provided in the inner cavity of the box body 4, a hand chain 8 is sleeved on the outer surface of the hand chain wheel 7, one end of the hand chain 8 is fixedly connected to a lower hook 9, and the other end is fixedly connected to a lower hanging frame 10, and a braking assembly is provided on the side of the handle 6 away from the box body 4.

[0025] A long axis 11 runs through the center of the reduction box 2 near the transmission box 1, and one end of the long axis 11 near the transmission box 1 runs through the transmission box 1 and is fixedly connected to the hand chain wheel 7 and the handle 6. The reduction box 2 and the long axis 11 therein can transmit the hand chain 8; the brake assembly includes a brake box 12 fixedly connected to the outer wall of the handle 6, a driving gear 13 is provided at the top of the inner cavity of the brake box 12, a driven gear 14 is provided below the driving gear 13, the driving gear 13 and the driven gear 14 are meshed and connected through the gears thereon, the central axes of the driving gear 13 and the driven gear 14 are rotatably connected to the rear wall of the brake box 12, a micro motor 15 is provided on one side of the brake box 12, the output end of the micro motor 15 runs through the side wall of the brake box 12 and is fixedly connected to the central axis of the driving gear 13, and the front edges of the driving gear 13 and the driven gear 14 are oppositely provided with An articulated rod 16, one end of the articulated rod 16 away from the driving gear 13 and the driven gear 14 is fixedly connected to a connecting plate 17, pulleys 18 are symmetrically provided at the upper and lower ends of the connecting plate 17, the inner top wall and the inner bottom wall of the brake box 12 are symmetrically provided with sliding grooves 19 and the pulleys 18 are slidably connected to adjacent sliding grooves 19 respectively, a brake rod 20 is fixedly connected to the center of one side wall of the connecting plate 17, one end of the brake rod 20 passes through the side wall of the brake box 12 and the side wall of the box body 4 and extends to the inner cavity of the box body 4, a brake friction pad 21 is fixedly connected to the through end of the brake rod 20, and the brake friction pad 21 and the hand chain wheel 7 are arranged in corresponding positions and matching specifications, the brake assembly can provide a good braking effect, so it can ensure the braking effect when braking is required, thereby avoiding serious impact on operation safety and operation efficiency due to poor braking effect.

[0026] Working process: first hang the upper hook 5 on the hoisting part, hang the material on the lower hook 9, and then turn the handle 6. The rotation of the handle 6 will drive the hand chain wheel 7 to rotate, and then drive the hand chain 8 to rotate after being transmitted through the components in the reduction box 2 and the long shaft 11, thereby driving the lower hook 9 and the material thereon to be lifted and lowered. When braking is required, first start the micro motor 15. The micro motor 15 can drive the driven gear 14 to rotate by driving the active gear 13, thereby simultaneously driving the articulated rods 16 thereon to push the connecting plate 17, so that the connecting plate 17 pushes the brake rod 20 forward through the sliding of the pulley 18 in the sliding groove 19, and the brake rod 20 simultaneously drives the brake friction plate 21 at its end to contact the hand chain wheel 7 and brake the hand chain wheel 7 through friction. Therefore, the braking effect can be guaranteed when braking is required, thereby avoiding serious impact on operation safety and operation efficiency due to poor braking effect. When braking is not required, just reverse the micro motor 15 to disengage the brake friction plate 21 from the hand chain wheel 7.

[0027] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brake mechanism for a light-load lever hoist, comprising a transmission box (1) and a reduction box (2) arranged on one side of the transmission box (1), characterized in that: The transmission box (1) is connected to the reduction box (2) via a connecting bolt (3). The transmission box (1) comprises a box body (4). An upper hook (5) is fixedly connected to the top of the box body (4). A handle (6) is rotatably connected to the side of the box body (4) away from the reduction box (2). A hand chain wheel (7) is provided in the inner cavity of the box body (4). A hand chain (8) is sleeved on the outer surface of the hand chain wheel (7). One end of the hand chain (8) is fixedly connected to a lower hook (9), and the other end is fixedly connected to a lower hanging frame (10). A brake assembly is provided on the side of the handle (6) away from the box body (4).

2. The brake mechanism of a light-load lever hoist according to claim 1, characterized in that: A long shaft (11) passes through the center of the reduction box (2) on one side close to the transmission box (1); one end of the long shaft (11) close to the transmission box (1) passes through the transmission box (1) and is fixedly connected to the hand chain wheel (7) and the handle (6).

3. The brake mechanism of a light-load lever hoist according to claim 1, characterized in that: The brake assembly comprises a brake box (12) fixedly connected to the outer wall of the handle (6), a driving gear (13) is provided at the top of the inner cavity of the brake box (12), a driven gear (14) is provided below the driving gear (13), the driving gear (13) and the driven gear (14) are meshed and connected via gears thereon, and the central axes of the driving gear (13) and the driven gear (14) are both rotatably connected to the rear wall of the brake box (12).

4. The brake mechanism of a light-load lever hoist according to claim 3, characterized in that: A micro motor (15) is provided on one side of the brake box (12), the output end of the micro motor (15) passes through the side wall of the brake box (12) and is fixedly connected to the central axis of the driving gear (13), and hinge rods (16) are provided opposite to each other at the front edges of the driving gear (13) and the driven gear (14).

5. The brake mechanism of a light-load lever hoist according to claim 4, characterized in that: One end of the hinged rod (16) away from the driving gear (13) and the driven gear (14) is fixedly connected to a connecting plate (17), and pulleys (18) are symmetrically provided at the upper and lower ends of the connecting plate (17). The inner top wall and the inner bottom wall of the brake box (12) are symmetrically provided with sliding grooves (19), and the pulleys (18) are respectively slidably connected to adjacent sliding grooves (19).

6. The brake mechanism of a light-load lever hoist according to claim 5, characterized in that: A brake rod (20) is fixedly connected to the center of one side wall of the connecting plate (17), one end of the brake rod (20) penetrates the side wall of the brake box (12) and the side wall of the box body (4) and extends to the inner cavity of the box body (4), and a brake friction plate (21) is fixedly connected to the through end of the brake rod (20), and the brake friction plate (21) and the hand chain wheel (7) are arranged in a corresponding position and with matching specifications.

Images