Hand-held switch of chain hoist

Abstract

The utility model belongs to the technical field of hoisting equipment, and relates to a hand-held switch of a chain hoist, which comprises a lifting hook unit, a hand-held control unit and an electric control unit, the hand-held control unit and the lifting hook unit are connected through a hanging plate and a shell, and the electric control unit is arranged in the shell and mounted on the hanging plate. A horizontal control rod is rotationally arranged in the shell, a shifting piece is arranged on the control rod, the upper end and the lower end of the shifting piece correspond to an ascending terminal button and a descending terminal button of the electric control unit respectively, a control button for driving the control rod to rotate is arranged on the shell, and when the control rod rotates in different directions, the shifting piece is driven to rotate. And the shifting piece respectively touches the ascending terminal button and the descending terminal button and controls the lifting hook unit to ascend and descend. The hand-held switch for the chain hoist provided by the utility model can more accurately control the lifting of a workpiece and improve the working efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting equipment and relates to a handheld switch for a chain hoist. Background Technology

[0002] Chain hoists, as a type of lightweight lifting equipment, are widely used in factories, warehouses, docks, logistics, and construction sites due to their small size, light weight, and ease of operation. They are essential equipment for improving labor efficiency and the working environment. Therefore, ease of operation and efficiency are the main considerations for designers.

[0003] Traditional chain hoists have separate, independent components for the hook and switch. For example, Chinese utility model patent CN2809991Y (publication date: 2006-08-23) discloses a handheld switch box for an electric hoist, which includes an upper cover, a lower cover, and a wire inlet connector. A push-button switch is installed on the upper cover, and a waterproof cover is provided at the push-button switch location. The wire inlet connector has a wire inlet hole. The key feature is that the shape of the wire inlet connector is conical, and the mating part between the wire inlet connector and the hole in the switch box is an annular groove. The left end face of the annular groove is an inner conical surface. The wire inlet portion of the wire inlet hole is conical, and an annular lip is provided on the hole wall of the wire inlet hole.

[0004] This type of separate switch makes it difficult to observe the working status of the workpiece during operation. Therefore, it cannot achieve precise control of precision and fragile workpieces, which greatly reduces the efficiency of operation. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a handheld switch for a chain hoist, which allows for more precise control of workpiece lifting and lowering, thereby improving work efficiency.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0007] A handheld switch for a chain hoist includes a hook unit, a handheld control unit, and an electrical control unit. The handheld control unit and the hook unit are connected to a housing via a mounting plate. The electrical control unit is housed inside the housing and mounted on the mounting plate. A horizontal control rod is rotatably mounted inside the housing. A lever is mounted on the control rod, with its upper and lower ends corresponding to the up and down terminals of the electrical control unit, respectively. A control button on the housing drives the control rod to rotate. When the control rod rotates in different directions, the lever touches the up and down terminals, respectively, and controls the lifting and lowering of the hook unit.

[0008] In the aforementioned handheld switch for a chain hoist, the hook unit, the mounting plate, and the outer casing are connected as a whole by fasteners, and the mounting plate and the outer casing are located in the middle of the hook unit.

[0009] In the aforementioned handheld switch for a chain hoist, the control button is located on the side of the housing and is connected to the control rod via a transmission component. When the control button rotates around its rotation axis in different directions, it drives the control rod to rotate in different directions. The rotation axis is located in the middle of the control button, and the upper and lower ends of the control button are raised outward to increase the pressing stroke.

[0010] In the aforementioned handheld switch for a chain hoist, a pair of control buttons are provided, located on the left and right sides of the outer casing respectively; a pair of transmission components are provided, respectively connecting the control buttons and one end of the control rod; the two control buttons and the transmission components synchronously drive the control rod to rotate.

[0011] In the above-mentioned handheld switch for a chain hoist, the transmission component includes a support frame, the control lever is rotatably connected to the support frame, the end of the control lever is provided with a first bevel gear, the rotating shaft of the control button passes through the support frame and is rotatably connected to it, and a second bevel gear is fitted on the rotating shaft inside the support frame, the first bevel gear and the second bevel gear meshing and transmitting power; preferably, the first bevel gear and the second bevel gear are both half gears.

[0012] In the above-mentioned handheld switch for a chain hoist, the central part of the control lever and the rotating shaft inside the support frame are both square shafts. The paddle, the first bevel gear, and the second bevel gear are provided with square shaft holes that fit onto the corresponding square shafts. The paddle, the first bevel gear, and the second bevel gear are interference-fitted with the square shafts, or the square shafts are provided with axially limiting shoulders or retaining rings.

[0013] In the above-mentioned handheld switch for a chain hoist, the electrical control unit is provided with an emergency stop switch, and the outer casing is provided with a through hole for the emergency stop switch to pass through; the emergency stop switch, the rising terminal button, and the falling terminal button are distributed vertically.

[0014] In the aforementioned handheld switch for a chain hoist, a cable connector is provided on the top of the housing, and a spiral cable passes through the cable connector and is electrically connected to the electrical control unit.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] 1. This utility model provides a handheld switch for a chain hoist, which integrates the handheld control unit and the electrical control unit into the hook unit to form an integrated control assembly. After the operator places the workpiece, he / she can directly press the switch to control the lifting or lowering of the hook. During operation, the height of the workpiece can be directly observed, achieving precise control and improving work efficiency. It also has the advantages of flexible operation, safety and reliability, stable structure and convenient disassembly.

[0017] 2. This utility model improves the transmission structure of the switch. Through the transmission component composed of the support frame, the first bevel gear and the second bevel gear, the driving force generated by pressing the control button can be stably transmitted to the control lever and the paddle, thereby realizing the precise driving of the terminal button. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a perspective view of the present invention (with part of the outer shell removed);

[0020] Figure 3 This is a transmission structure diagram of this utility model;

[0021] Reference numerals: 1. Hook unit; 11. Cable connector; 12. Spiral cable; 2. Handheld control unit; 21. Hanging plate; 22. Housing; 23. Control lever; 24. Paddle; 25. Control button; 26. Rotating shaft; 27. Support frame; 28. First bevel gear; 29. ​​Second bevel gear; 3. Electrical control unit; 31. Rising terminal button; 32. Lowering terminal button; 33. Emergency stop switch. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-3 :

[0023] A handheld switch for a chain hoist includes a hook unit 1, a handheld control unit 2, and an electrical control unit 3. The handheld control unit 2 and the hook unit 1 are connected to a housing 22 via a mounting plate 21. The electrical control unit 3 is disposed inside the housing 22 and mounted on the mounting plate 21. A horizontal control rod 23 is rotatably disposed inside the housing 22. A lever 24 is provided on the control rod 23. The upper and lower ends of the lever 24 correspond to the rising terminal button 31 and the falling terminal button 32 of the electrical control unit 3, respectively. A control button 25 is provided on the housing 22 to drive the control rod 23 to rotate. When the control rod 23 rotates in different directions, the lever 24 touches the rising terminal button 31 and the falling terminal button 32, respectively, and controls the lifting and lowering of the hook unit 1.

[0024] In this embodiment, the hook unit 1 is connected to the electric hoist and used for lifting workpieces; the electrical control unit 3 is connected to the control system and controls the lifting and lowering of the hook unit 1. In this embodiment, the electrical control unit 3, the rising terminal button 31, the falling terminal button 32, and the emergency stop switch 33 are all the same as in the prior art; the handheld control unit 2 is used for manual operation and acts on the terminal elements of the electrical control unit 3; the hanging plate 21 is a load-bearing component, which connects the hook shells of the upper and lower hook units 1 and is also used to set the electrical control unit 3. During operation, after the operator places the workpiece, they drive the control lever 23 to rotate by pressing the control button 25. When the control lever 23 rotates, the paddle 24 mounted on the control lever 23 swings up and down. Referring to the attached diagram, when the control lever 23 drives the upper end of the paddle 24 to rotate towards the electronic control unit 3, the upper end of the paddle 24 touches the rising terminal button 31 and drives the hook to rise through the rising terminal button 31. When the control lever 23 drives the lower end of the paddle 24 to rotate towards the electronic control unit 3, the lower end of the paddle 24 touches the lowering terminal button 32 and drives the hook to descend through the lowering terminal button 32.

[0025] In this embodiment, the hook unit 1, the hanging plate 21, and the outer shell 22 are connected as one unit by fasteners, and the hanging plate 21 and the outer shell 22 are disposed in the middle of the hook unit 1.

[0026] In this embodiment, the specific structure of the control lever 23 driven by the control button 25 is as follows: the control button 25 is located on the side of the housing 22 and is connected to the control lever 23 through a transmission component. When the control button 25 rotates around its rotation axis 26 in different directions, it drives the control lever 23 to rotate in different directions. The rotation axis 26 is located in the middle of the control button 25, and the upper and lower ends of the control button 25 are raised outward to increase the pressing stroke.

[0027] To achieve more precise control, a pair of control buttons 25 are provided, located on the left and right sides of the housing 22 respectively; a pair of transmission components are provided, respectively connecting one end of the control button 25 and one end of the control lever 23; the two control buttons 25 and the transmission components synchronously drive the control lever 23 to rotate; of course, when a pair of control buttons 25 are provided, control can also be achieved by using only one of the control buttons 25.

[0028] The specific structure of the transmission component in this embodiment is as follows: the transmission component includes a support frame 27, the control lever 23 is rotatably connected to the support frame 27, a first bevel gear 28 is provided at the end of the control lever 23, the rotation shaft 26 of the control button 25 passes through the support frame 27 and is rotatably connected to it, a second bevel gear 29 is fitted on the rotation shaft 26 inside the support frame 27, and the first bevel gear 28 and the second bevel gear 29 mesh and drive each other; preferably, the first bevel gear 28 and the second bevel gear 29 are both half gears; when the control button 25 is pressed to rotate around the rotation shaft 26, the second bevel gear 29 fitted on the rotation shaft 26 rotates accordingly, and drives the first bevel gear 28 meshing with it to rotate, and when the first bevel gear 28 rotates, the control lever 23 and the paddle 24 rotate accordingly.

[0029] Preferably, the middle part of the control lever 23 and the rotating shaft 26 in the support frame 27 are both square shafts, and the paddle 24, the first bevel gear 28 and the second bevel gear 29 are provided with square shaft holes that are fitted onto the corresponding square shafts; the paddle 24, the first bevel gear 28 and the second bevel gear 29 are interference-fitted with the square shafts, or the square shafts are provided with axially limiting shoulders or retaining rings.

[0030] The aforementioned electronic control unit 3 is equipped with an emergency stop switch 33, and the housing 22 is provided with a through hole for the emergency stop switch 33 to pass through; the emergency stop switch 33, the rising terminal button 31 and the falling terminal button 32 are distributed vertically; emergency braking can be achieved through the emergency stop switch 33.

[0031] The top of the housing is provided with a cable connector 11, and the spiral cable 12 passes through the cable connector 11 and is electrically connected to the electronic control unit 3; the cable connector 11 is preferably a waterproof connector.

[0032] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A handheld switch for a chain hoist, characterized in that, The device includes a hook unit (1), a handheld control unit (2), and an electric control unit (3). The handheld control unit (2) and the hook unit (1) are connected to the outer shell (22) via a mounting plate (21). The electric control unit (3) is located inside the outer shell (22) and mounted on the mounting plate (21). A horizontal control rod (23) is rotatably installed inside the outer shell (22). A paddle (24) is provided on the control rod (23). The upper and lower ends of the paddle (24) correspond to the rising terminal button (31) and the falling terminal button (32) of the electric control unit (3), respectively. A control button (25) is provided on the outer shell (22) to drive the control rod (23) to rotate. When the control rod (23) rotates in different directions, the paddle (24) touches the rising terminal button (31) and the falling terminal button (32) respectively and controls the hook unit (1) to rise and fall.

2. The handheld switch for a chain hoist according to claim 1, characterized in that, The control button (25) is located on the side of the housing (22) and is connected to the control lever (23) via a transmission component. When the control button (25) rotates around its rotation axis (26) in different directions, it drives the control lever (23) to rotate in different directions.

3. A handheld switch for a chain hoist according to claim 2, characterized in that, The control buttons (25) are provided in pairs, located on the left and right sides of the outer casing (22); the transmission components are provided in pairs, respectively connecting one end of the control buttons (25) and the control lever (23); the two control buttons (25) and the transmission components synchronously drive the control lever (23) to rotate.

4. A handheld switch for a chain hoist according to claim 2, characterized in that, The transmission component includes a support frame (27), the control lever (23) is rotatably connected to the support frame (27), the end of the control lever (23) is provided with a first bevel gear (28), the rotating shaft (26) of the control button (25) passes through the support frame (27) and is rotatably connected to it, and a second bevel gear (29) is fitted on the rotating shaft (26) inside the support frame (27), and the first bevel gear (28) and the second bevel gear (29) mesh and transmit power.

5. A handheld switch for a chain hoist according to claim 4, characterized in that, The central part of the control lever (23) and the rotating shaft (26) inside the support frame (27) are both square shafts. The paddle (24), the first bevel gear (28), and the second bevel gear (29) are provided with square shaft holes fitted onto the corresponding square shafts.

6. A handheld switch for a chain hoist according to claim 1, characterized in that, An emergency stop switch (33) is provided on the electronic control unit (3), and a through hole is provided on the outer casing (22) for the emergency stop switch (33) to pass through.

7. A handheld switch for a chain hoist according to claim 1, characterized in that, The top of the housing (22) is provided with a cable connector (11), and the spiral cable (12) passes through the cable connector (11) and is electrically connected to the electronic control unit (3).

Images