Portable aluminum alloy lever block

Abstract

The utility model belongs to the technical field of manual starting tools, and particularly relates to a portable aluminum alloy lever block which comprises a body aluminum shell, a first connecting block is fixedly arranged at the top of the body aluminum shell, a first lifting hook is movably arranged at the top of the first connecting block, a guide wheel is arranged in the body aluminum shell, a chain is arranged on the guide wheel, and a second lifting hook is movably arranged on the first lifting hook. Through the arrangement of the lengthening rod, the grip, the storage hole, the spring, the guide plate and the positioning rod, when the length of the rocking handle needs to be increased, the positioning rod is pressed inwards, the positioning rod extrudes the guide plate, the guide plate extrudes the spring again, and after the positioning rod retracts into the storage hole, the lengthening rod can be pulled outwards, so that the length of the rocking handle can be increased. The lengthening rod moves in the mounting cavity, when the positioning rod moves to the position of the positioning hole, the spring pushes the guide plate, then the guide plate pushes the positioning rod to enable the positioning rod to be popped out of the positioning hole, positioning of the lengthening rod is achieved, the whole length of the rocking handle is lengthened, torque can be increased, and power consumption of operators is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of manual starting tools, in particular to a lightweight aluminum alloy hand-operated hoist. Background Art

[0002] A lever hoist is a simple, portable manual lifting tool. It can be used for lifting, pulling, lowering, and calibrating. A lever hoist uses a lever to manually pull a handle, leveraging the force to create a linear traction force that matches the load. This force acts alternately on the load within the mechanism, driving the load.

[0003] However, the force rocker of the existing lever hoist is fixed in length. When greater force is required for operation, the handle cannot be extended to increase the torque. Therefore, the user needs to increase the output torque, which increases the user's workload. For this reason, a lightweight aluminum alloy lever hoist is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a lightweight aluminum alloy hand-plate hoist.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lightweight aluminum alloy hand-operated hoist, comprising an aluminum shell body, a first connecting block is fixedly provided on the top of the aluminum shell body, a first hook is movably provided on the top of the first connecting block, a guide wheel is provided inside the aluminum shell body, a chain is provided on the guide wheel, a second connecting block is fixedly provided on one end of the chain, a second hook is movably provided on the bottom of the second connecting block, a crank is movably provided on the front of the aluminum shell body, a switching claw is provided on the crank, an installation cavity is provided inside the crank, a plurality of positioning holes are provided on the front of the crank, and an extension structure is provided inside the installation cavity.

[0006] As a further description of the above technical solution:

[0007] The inner walls of the first hook and the second hook are both provided with a plurality of grooves, and the depth of the grooves is one centimeter.

[0008] As a further description of the above technical solution:

[0009] The extension structure includes an extension rod movably connected to the installation cavity, a handle is fixedly provided at one end of the extension rod, a storage hole is provided on the front of the extension rod, a guide plate is movably provided in the storage hole, a positioning rod is fixedly provided on one side of the guide plate, and the positioning rod and the positioning hole are adapted to each other.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the storage hole is provided with two sliding grooves, and two sliders are fixedly provided on the outside of the guide plate. The sliders and the sliding grooves are movably connected. A spring is fixedly provided on the side of the guide plate away from the positioning rod, and the other end of the spring is fixedly connected to the inner wall of the storage hole.

[0012] As a further description of the above technical solution:

[0013] Limiting grooves are provided on both inner walls of the installation cavity, and limiting bars are fixedly provided on both sides of the extension rod, and the limiting grooves and the limiting bars are movably connected.

[0014] As a further description of the above technical solution:

[0015] A plurality of arc-shaped grooves are provided on the side of the handle, and the inner walls of the plurality of arc-shaped grooves are provided with silicone pads.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the existing technology, this lightweight aluminum alloy hand-operated hoist is equipped with an extension rod, a handle, a storage hole, a spring, a guide plate and a positioning rod. When the length of the crank handle needs to be increased, the positioning rod is pressed inward, the positioning rod squeezes the guide plate, and the guide plate squeezes the spring. When the positioning rod is retracted into the storage hole, the extension rod can be pulled outward and the extension rod moves in the installation cavity. When the positioning rod moves to the position of the positioning hole, the spring pushes the guide plate, and the guide plate pushes the positioning rod to make it pop out of the positioning hole, thereby realizing the positioning of the extension rod. Lengthening the overall length of the crank handle can increase the torque and reduce the operator's energy consumption.

[0018] 2. Compared with the existing technology, this lightweight aluminum alloy hand-operated hoist can increase the comfort and stability of holding by arranging multiple arc grooves on the handle, reduce hand fatigue caused by long-term operation, and also increase the friction between the hook and the weight by arranging grooves on the inner wall of the hook, preventing the weight from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the lightweight aluminum alloy hand-operated hoist proposed in the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the crank handle of the lightweight aluminum alloy hand-operated hoist proposed in the utility model;

[0021] Figure 3 This is an exploded schematic diagram of the extended structure in the lightweight aluminum alloy hand-operated hoist proposed in the utility model.

[0022] Legend:

[0023] 1. Main body aluminum shell; 2. First connecting block; 3. First hook; 4. Guide wheel; 5. Chain; 6. Second connecting block; 7. Second hook; 8. Groove; 9. Crank handle; 10. Switching claw; 11. Positioning hole; 12. Mounting cavity; 13. Extension structure; 131. Extension rod; 132. Handle; 133. Arc groove; 134. Limiting strip; 135. Storage hole; 136. Slide groove; 137. Spring; 138. Guide plate; 139. Positioning rod; 140. Slider. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figures 1 to 3 The utility model provides a lightweight aluminum alloy hand-plate hoist: it includes a main body aluminum shell 1, a first connecting block 2 is fixedly provided on the top of the main body aluminum shell 1, a first hook 3 is movably provided on the top of the first connecting block 2, a guide wheel 4 is provided in the main body aluminum shell 1, a chain 5 is provided on the guide wheel 4, one end of the chain 5 is fixedly provided with a second connecting block 6, a second hook 7 is movably provided on the bottom of the second connecting block 6, the inner walls of the first hook 3 and the second hook 7 are provided with a plurality of grooves 8, the depth of the groove 8 is one centimeter, the groove 8 can increase the friction between the hook and the weight to prevent the weight from slipping, a crank handle 9 is movably provided on the front of the main body aluminum shell 1, a switching claw 10 is provided on the crank handle 9, a mounting cavity 12 is provided in the crank handle 9, and a plurality of positioning holes 11 are provided on the front of the crank handle 9;

[0026] In order to achieve the purpose of adjusting the length of the crank handle 9, an extension structure 13 is provided in the installation cavity 12. The extension structure 13 includes an extension rod 131 movably connected to the installation cavity 12. Limiting grooves are provided on the inner walls on both sides of the installation cavity 12. Limiting bars 134 are fixed on both sides of the extension rod 131. The limiting grooves and the limiting bars 134 are movably connected. A handle 132 is fixed on one end of the extension rod 131. A storage hole 135 is provided on the front of the extension rod 131. A guide plate 138 is movably provided in the storage hole 135. Two sliding grooves 136 are provided on the inner wall of the storage hole 135. Two sliders 140 are fixed on the outside of the guide plate 138. The slider 140 and the sliding groove 136 are movably connected. A spring 137 is fixed on the side of the guide plate 138 away from the positioning rod 139. The other end of the spring 137 is fixedly connected to the inner wall of the receiving hole 135, and a positioning rod 139 is fixedly provided on one side of the guide plate 138. The positioning rod 139 is adapted to the positioning hole 11. When the positioning rod 139 is pressed inward, the positioning rod 139 squeezes the guide plate 138, and the guide plate 138 squeezes the spring 137. When the positioning rod 139 is retracted into the receiving hole 135, the extension rod 131 can be pulled outward, and the extension rod 131 moves in the installation cavity 12. When the positioning rod 139 moves to the position of the positioning hole 11, the spring 137 pushes the guide plate 138, and the guide plate 138 pushes the positioning rod 139 to pop out of the positioning hole 11, thereby realizing the positioning of the extension rod 131. Lengthening the overall length of the crank handle 9 can increase the torque and reduce the operator's power consumption.

[0027] In order to improve the comfort of use, multiple arc grooves 133 are provided on the side of the handle 132, and the inner walls of the multiple arc grooves 133 are provided with silicone pads. The setting of the arc grooves 133 can increase the comfort and stability of holding and reduce hand fatigue caused by long-term operation.

[0028] Working principle: If greater force is required to operate, first press the positioning rod 139 inward, the positioning rod 139 squeezes the guide plate 138, and the guide plate 138 squeezes the spring 137. When the positioning rod 139 retracts into the storage hole 135, the extension rod 131 can be pulled outward, and the extension rod 131 moves in the installation cavity 12. When the positioning rod 139 moves to the position of the positioning hole 11, the spring 137 pushes the guide plate 138, and the guide plate 138 pushes the positioning rod 139 to pop out from the positioning hole 11, thereby positioning the extension rod 131. Extending the overall length of the crank handle 9 can increase the torque and reduce the operator's force consumption. The multiple arc grooves 133 provided on the handle 132 can fit the fingers more closely, increase the comfort and stability of holding, and reduce the hand fatigue caused by long-term operation. The multiple grooves 8 provided on the inner walls of the first hook 3 and the second hook 7 can increase the friction between the hook and the weight to prevent the weight from slipping.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lightweight aluminum alloy hand-operated hoist, comprising an aluminum shell (1), characterized in that: A first connecting block (2) is fixedly provided on the top of the main body aluminum shell (1), a first hook (3) is movably provided on the top of the first connecting block (2), a guide wheel (4) is provided in the main body aluminum shell (1), a chain (5) is provided on the guide wheel (4), a second connecting block (6) is fixedly provided at one end of the chain (5), a second hook (7) is movably provided at the bottom of the second connecting block (6), a crank handle (9) is movably provided on the front surface of the main body aluminum shell (1), a switching claw (10) is provided on the crank handle (9), a mounting cavity (12) is provided in the crank handle (9), a plurality of positioning holes (11) are provided on the front surface of the crank handle (9), and an extension structure (13) is provided in the mounting cavity (12).

2. The lightweight aluminum alloy hand-operated hoist according to claim 1 is characterized in that: The inner walls of the first hook (3) and the second hook (7) are both provided with a plurality of grooves (8), and the depth of the grooves (8) is one centimeter.

3. The lightweight aluminum alloy hand-operated hoist according to claim 1 is characterized in that: The extension structure (13) includes an extension rod (131) movably connected to the installation cavity (12), a handle (132) is fixedly provided at one end of the extension rod (131), a storage hole (135) is provided on the front of the extension rod (131), a guide plate (138) is movably provided in the storage hole (135), a positioning rod (139) is fixedly provided on one side of the guide plate (138), and the positioning rod (139) is adapted to the positioning hole (11).

4. The lightweight aluminum alloy hand-operated hoist according to claim 3 is characterized by: The inner wall of the receiving hole (135) is provided with two sliding grooves (136), the outside of the guide plate (138) is fixedly provided with two sliders (140), the sliders (140) and the sliding grooves (136) are movably connected, and a spring (137) is fixedly provided on the side of the guide plate (138) away from the positioning rod (139), and the other end of the spring (137) is fixedly connected to the inner wall of the receiving hole (135).

5. The lightweight aluminum alloy hand-operated hoist according to claim 3 is characterized by: Limiting grooves are provided on both inner walls of the installation cavity (12), and limiting strips (134) are fixedly provided on both sides of the extension rod (131), and the limiting grooves and the limiting strips (134) are movably connected.

6. The lightweight aluminum alloy hand-operated hoist according to claim 3 is characterized by: A plurality of arc-shaped grooves (133) are provided on the side of the handle (132), and the inner walls of the plurality of arc-shaped grooves (133) are provided with silicone pads.

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