Driving mechanism of electric lifting device

Abstract

The utility model relates to the technical field of lifting devices, in particular to a driving mechanism of an electric lifting device. A driving mechanism of an electric lifting device comprises a frame body, a driving motor is fixedly arranged at the upper end of the frame body, a bimodal coupling locking anti-falling mechanism is installed on an output shaft of the driving motor, and two sets of transmission wheel shafts are rotatably arranged at the upper end of the frame body; an output shaft of the driving motor is in transmission connection with the two sets of transmission wheel shafts through belts, and lifting workbenches are arranged on the two sets of transmission wheel shafts in a liftable mode through transmission chains. A load is lifted in the mode that the motor is matched with the chain, the controllability of the lifting height is guaranteed, when electrical faults or overload or mechanical failures occur, the driving mechanism can be braked and locked, accidental descending caused by sudden power loss is prevented, the situation that the lifting workbench is out of control and falls is effectively avoided, and the working efficiency is improved. Therefore, the safety of personnel or goods is protected, and the accident risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a driving mechanism of an electric lifting device. Background Art

[0002] Electric lifting device is a mechanical device that uses electricity to move objects or platforms vertically up and down. It is widely used in warehousing logistics, equipment maintenance and industrial automation. The driving mechanism is an important part to ensure the stability, safety and efficiency of the lifting device.

[0003] Existing electric lifting device drive mechanisms often use telescopic cylinders to lift and lower loads, but the range of their lifting heights is limited. In the event of electrical failure, overload or mechanical failure, the braking effect is poor and cannot effectively prevent overload damage and safety accidents. At the same time, the load stays on the lifting device, and the emergency response capability is poor.

[0004] Therefore, it is necessary to provide an electric lifting device driving mechanism to solve the problems in the above-mentioned background technology. Utility Model Content

[0005] In response to the above problems, the present application provides an electric lifting device drive mechanism, which lifts and lowers the load through a motor in conjunction with a chain, thereby ensuring the controllability of the lifting height. When an electrical failure, overload or mechanical failure occurs, the electric cylinder is powered off, and the locking seat forces the electric cylinder to contract and brake and lock the output shaft of the motor under the action of the locking spring to prevent accidental descent due to sudden loss of power, effectively preventing the lifting platform from falling out of control, thereby protecting the safety of personnel or goods and reducing the risk of accidents.

[0006] To achieve the purpose of this application, this application provides the following technical solutions:

[0007] The present application provides a driving mechanism of an electric lifting device, comprising: a frame, a driving motor is fixedly arranged on the upper end of the frame, a dual-mode coupling locking anti-falling mechanism is installed on the output shaft of the driving motor, the dual-mode coupling locking anti-falling mechanism comprises a bottom shell fixedly arranged on the frame, a locking plate is rotatably arranged in the bottom shell, the locking plate is fixedly connected to the output shaft of the driving motor, and locking holders are hingedly arranged on both sides of the bottom shell, the locking holders can limit and release the locking plate through a dual-mode locking unit, and two groups of transmission axles are rotatably arranged on the upper end of the frame, the output shaft of the driving motor is respectively connected to the two groups of transmission axles through belts, a lifting workbench is lifted and lowered on the two groups of transmission axles through a transmission chain, and the lifting workbench can be vertically lifted and lowered and arranged in the frame.

[0008] In a possible implementation, the dual-mode coupling locking anti-fall mechanism also includes a first locking spring connected to the lower end of the locking seat on both sides, the upper end of the locking seat on both sides is connected to the card plate through a second locking spring, and the upper ends of the locking seat on both sides are connected through a third locking spring.

[0009] In a possible implementation, the first locking spring, the second locking spring, and the third locking spring are all made of a high-elastic material.

[0010] In a possible implementation, the dual-mode locking unit is fixedly disposed on the bottom shell, and both sides of the dual-mode locking unit are in conflict with the upper ends of the locking seats on both sides.

[0011] In a possible implementation manner, the bottom shell can be closed by a cover shell.

[0012] In one possible implementation, the dual-mode locking unit includes: an electric cylinder body, which is configured as two, and a threaded seat is fixedly provided on one side of the electric cylinder body away from the output end, and the threaded seats on both sides are symmetrically and movably limited on the bottom shell, and the threaded seats on both sides can be threadedly connected through a lock cylinder, and a handle is fixedly provided on the lock cylinder.

[0013] In a possible implementation, the output ends of the electric cylinder body are in conflict with the upper end of the locking seat.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model lifts and lowers the load by means of a motor in conjunction with a chain, thereby ensuring the controllability of the lifting height. When an electrical fault, overload or mechanical failure occurs, the electric cylinder is powered off, and the locking seat forces the electric cylinder to contract and brake and lock the output shaft of the motor under the action of the locking spring to prevent accidental descent caused by sudden loss of power, effectively avoiding the uncontrolled fall of the lifting platform, thereby protecting the safety of personnel or goods and reducing the risk of accidents. In addition, during routine maintenance or overhaul of the lifting device, no complicated tools are required, and maintenance or overhaul work can be carried out by adjusting the power on and off of the electric cylinder, thereby improving efficiency and reducing interference with normal operations.

[0016] 2. When the utility model cannot rely on electric drive, the distance between the electric cylinders can be adjusted by the handle to control the locking range of the locking seat, so as to gradually and safely adjust the lifting platform to ensure smooth landing or removal of trapped people or objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation on the present application.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the dual-mode coupling locking anti-falling mechanism in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the cover shell in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the dual-mode locking unit in the utility model;

[0022] Figure numerals: 1. frame; 2. driving motor; 3. dual-mode coupling locking anti-fall mechanism; 4. transmission wheel shaft; 5. belt; 6. transmission chain; 7. lifting workbench; 31. bottom shell; 32. locking plate; 33. locking card seat; 34. first locking spring; 35. card plate; 36. second locking spring; 37. third locking spring; 38. dual-mode locking unit; 39. cover shell; 381. electric cylinder body; 382. threaded seat; 383. lock cylinder; 384. handle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, unless otherwise specified, the meaning of "plurality" is three or more.

[0025] Figure 1-Figure 4An electric lifting device driving mechanism provided in an embodiment of the present application includes: a frame 1, a driving motor 2 is fixedly arranged on the upper end of the frame 1, and a dual-mode coupling locking anti-falling mechanism 3 is installed on the output shaft of the driving motor 2, and the dual-mode coupling locking anti-falling mechanism 3 includes a bottom shell 31 fixedly arranged on the frame 1, a locking plate 32 is rotatably arranged in the bottom shell 31, the locking plate 32 is fixedly connected to the output shaft of the driving motor 2, and locking seats 33 are hingedly arranged on both sides of the bottom shell 31, and the locking seats 33 can limit and release the locking plate 32 through a dual-mode locking unit 38, and two groups of transmission axles 4 are rotatably arranged on the upper end of the frame 1, the output shaft of the driving motor 2 is respectively connected to the two groups of transmission axles 4 through belts 5, and a lifting workbench 7 is provided on the two groups of transmission axles 4 so as to be liftable through a transmission chain 6, and the lifting workbench 7 can be vertically lifted and lowered in the frame 1.

[0026] Based on the above technical solution, under normal circumstances, the locking seat 33 is in an open state. When it is necessary to lift or lower goods or people, the drive motor 2 is started, and the drive motor 2 drives the transmission shaft 4 to rotate through the belt 5. The transmission shaft 4 drives the transmission chain 6 to lift and lower, so that the lifting work platform 7 is lifted and lowered through the transmission of the transmission chain 6; when an electrical fault, overload or mechanical failure occurs, the locking seat 33 rotates inward so that the rotation of the drive motor 2 can be braked, so that the lifting work platform 7 stays at the fault position.

[0027] On the basis of the above technical solution, the present application lifts and lowers the load (cargo or personnel) by driving the motor 2 in cooperation with the transmission chain 6, thereby ensuring the controllability of the lifting height. When an electrical failure, overload or mechanical failure occurs, the locking socket 33 brakes and locks the output shaft of the driving motor 2 to prevent accidental descent due to sudden loss of power, effectively avoiding the uncontrolled fall of the lifting platform 7, thereby protecting the safety of personnel or cargo and reducing the risk of accidents.

[0028] In one possible implementation, the dual-mode coupling locking anti-fall mechanism 3 also includes a first locking spring 34 connected to the lower end of the locking seat 33 on both sides, the upper ends of the locking seat 33 on both sides are connected to the clamping plate 35 through a second locking spring 36, and the upper ends of the locking seat 33 on both sides are connected through a third locking spring 37.

[0029] By adopting the above technical solution, in the event of electrical failure, overload or mechanical failure, during the process of the first locking spring 34, the second locking spring 36 and the third locking spring 37 recovering their deformation, the locking seats 33 on both sides can clamp and limit the locking plate 32.

[0030] In a possible implementation, the first locking spring 34 , the second locking spring 36 and the third locking spring 37 are all made of a highly elastic material, thereby increasing the braking effect of the locking seat 33 on the locking plate 32 .

[0031] In one possible implementation, the dual-mode locking unit 38 is fixedly arranged on the bottom shell 31, and both sides of the dual-mode locking unit 38 are in conflict with the upper ends of the locking sockets 33 on both sides, that is, under normal circumstances, the dual-mode locking unit 38 makes the locking sockets 33 open, and the locking sockets 33 do not restrict the rotation of the drive motor 2; when an electrical fault, overload or mechanical failure occurs, the dual-mode locking unit 38 reduces the inward deflection of the locking sockets 33 on both sides through the action of the locking sockets 33, thereby enabling the locking sockets 33 to brake the rotation of the drive motor 2.

[0032] In a possible implementation, the bottom shell 31 may be closed by a cover shell 39 to prevent impurities and the like from entering the dual-mode coupling locking anti-fall mechanism 3 and affecting the braking of the drive motor 2 .

[0033] In one possible implementation, the dual-mode locking unit 38 includes: an electric cylinder body 381, the electric cylinder body 381 is configured as two, and a threaded seat 382 is fixedly provided on one side of the electric cylinder body 381 away from the output end, and the threaded seats 382 on both sides are symmetrically and movably limited on the bottom shell 31, and the threaded seats 382 on both sides can be threadedly connected through a lock cylinder 383, and a handle 384 is fixedly provided on the lock cylinder 383.

[0034] By adopting the above technical solution, under normal circumstances, the threaded seat 382 of the electric cylinder 381 is retracted in the lock cylinder 383. When an electrical failure, overload or mechanical failure occurs and it is necessary to switch to manual mode, the handle 384 is manually turned, and the electric cylinders 381 on both sides move relative to each other in the lock cylinder 383 until the goods or personnel land stably and smoothly on the ground, thereby protecting the safety of personnel or goods and reducing the risk of accidents.

[0035] In one possible implementation, the output ends of the electric cylinder body 381 are in conflict with the upper ends of the locking seats 33. Under normal circumstances, that is, the electric cylinder body 381 is in a powered-on state, at which time the electric cylinder body 381 is extended, and the electric cylinder body 381 causes the locking seats 33 on both sides to open, and the locking seats 33 do not restrict the rotation of the drive motor 2; when a fault occurs, the electric cylinder body 381 is powered off, and the locking seats 33 on both sides force the electric cylinder body 381 to contract during the process of the first locking spring 34, the second locking spring 36 and the third locking spring 37 recovering their deformation, so that the locking seat 33 brakes the locking plate 32.

[0036] On the basis of the above technical solution, during routine maintenance or inspection of the lifting device, no complicated tools are required. The rotation of the drive motor 2 can be braked by adjusting the power on and off of the electric cylinder 381, thereby performing maintenance or inspection work, thereby improving efficiency and reducing interference with normal operations.

[0037] During specific implementation, under normal circumstances, the threaded seat 382 of the electric cylinder 381 is retracted in the lock cylinder 383, the electric cylinder 381 is energized, the electric cylinder 381 is extended, and the locking seat 33 is in an open state. When it is necessary to lift goods or personnel, start the drive motor 2, and the drive motor 2 drives the transmission shaft 4 to rotate through the belt 5, and the transmission shaft 4 drives the transmission chain 6 to lift, so that the lifting workbench 7 is lifted and lowered through the transmission of the transmission chain 6; when an electrical fault, overload or mechanical failure occurs, the electric cylinder 381 is powered off, and the locking seats 33 on both sides force the electric cylinder 381 to shrink during the process of the first locking spring 34, the second locking spring 36 and the third locking spring 37 recovering their deformation, so that the locking seat 33 brakes the locking plate 32, and the lifting workbench 7 stays at the fault position. When it is necessary to switch to manual mode, manually turn the handle 384, and the electric cylinders 381 on both sides move relative to each other until the goods or personnel land stably and smoothly on the ground.

[0038] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.

Claims

1. An electric lifting device driving mechanism, comprising: A frame (1), characterized in that a driving motor (2) is fixedly arranged at the upper end of the frame (1), a dual-mode coupling locking anti-falling mechanism (3) is installed on the output shaft of the driving motor (2), and the dual-mode coupling locking anti-falling mechanism (3) includes a bottom shell (31) fixedly arranged on the frame (1), a locking plate (32) is rotatably arranged in the bottom shell (31), the locking plate (32) is fixedly connected to the output shaft of the driving motor (2), and locking plates (32) are hingedly arranged on both sides of the bottom shell (31). A locking seat (33) is provided, wherein the locking seat (33) can limit and release the locking plate (32) through a dual-mode locking unit (38), and two groups of transmission axles (4) are rotatably provided at the upper end of the frame (1), and the output shaft of the drive motor (2) is respectively connected to the two groups of transmission axles (4) through belts (5), and a lifting workbench (7) is provided on the two groups of transmission axles (4) so ​​as to be liftable through a transmission chain (6), and the lifting workbench (7) can be vertically lifted and lowered in the frame (1).

2. The electric lifting device driving mechanism according to claim 1, characterized in that: The dual-mode coupling locking anti-falling mechanism (3) further comprises a first locking spring (34) connected to the lower ends of the locking seats (33) on both sides, the upper ends of the locking seats (33) on both sides are connected to the clamping plate (35) via a second locking spring (36), and the upper ends of the locking seats (33) on both sides are connected via a third locking spring (37).

3. The electric lifting device driving mechanism according to claim 2, characterized in that: The first locking spring (34), the second locking spring (36) and the third locking spring (37) are all made of highly elastic material.

4. The electric lifting device driving mechanism according to claim 1, characterized in that: The dual-mode locking unit (38) is fixedly arranged on the bottom shell (31), and both sides of the dual-mode locking unit (38) are in contact with the upper ends of the locking seats (33) on both sides.

5. The electric lifting device driving mechanism according to claim 1, characterized in that: The bottom shell (31) can be closed by a cover shell (39).

6. The electric lifting device driving mechanism according to claim 1, characterized in that: The dual-mode locking unit (38) comprises: an electric cylinder body (381), the electric cylinder body (381) being configured as two, a threaded seat (382) being fixedly provided on one side of the electric cylinder body (381) away from the output end, the threaded seats (382) on both sides being symmetrically and movably limited and arranged on the bottom shell (31), the threaded seats (382) on both sides being threadably connected through a lock cylinder (383), and a handle (384) being fixedly provided on the lock cylinder (383).

7. The electric lifting device driving mechanism according to claim 6, characterized in that: The output ends of the electric cylinder body (381) are in conflict with the upper end of the locking seat (33).

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