A structural device with reverse transmission and precise self-locking
By using a structural device with reverse transmission precision self-locking in the electric door reel, self-locking is achieved by meshing and separation between the self-locking gear and the passive rotating disc, the problem of uncontrolled decline in the electric door reel during power outage, transmission chain breakage or electronic lock failure is solved, and safety reliability and self-locking accuracy are improved.
Patent Information
- Application Number
- CN202420703736.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-07
AI Technical Summary
Existing electric door reel machines are prone to lose control and decline in the event of power outage, transmission chain breakage, or electronic lock rectifier silicon breakdown by lightning, which poses safety hazards.
The structural device of precise self-locking with reverse transmission is adopted, including an active rotating disc, a self-locking shaft, a self-locking gear, a passive rotating disc and a spring. Self-locking is achieved through meshing and separation between the self-locking gear and the passive rotating disc. When the motor stops rotating, the spring elastic pressure makes the self-locking gear mesh with the meshing teeth to achieve physical self-locking.
It effectively solves the problem of uncontrolled and descent of the door rolling machine caused by power outage, transmission chain breakage and electronic lock failure, improves safety and reliability, and achieves self-locking accuracy through gear transmission.
Smart Images
Figure CN222701895U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of rolling door machines, and in particular to a reverse transmission precise self-locking structural device applied to an electric rolling door machine. Background Art
[0002] Electric rolling door machines have long been widely used in shops of all sizes. Since electric rolling door machines have a certain weight, when encountering sudden situations such as power outages, motor failures, motor drive belt or chain breakage during the ascent or descent process, the electric rolling door machines are likely to fall out of control. Such a heavy rolling door machine can easily hit people or objects when it falls, which poses an unsafe factor. Although many electric rolling doors in the prior art have adopted anti-fall functions, most of them are improvements in controlling motors, and all adopt electronic anti-fall. The rectifier silicon in the electronic anti-fall is often struck by lightning, causing failures. There are still uncontrollable situations in the event of power outages, so the problem of uncontrolled descent of electric rolling door machines has not been completely solved. Summary of the invention
[0003] In order to solve the defects and problems existing in the prior art of preventing electric rolling door machines from falling, a reverse transmission precise self-locking structural device is provided.
[0004] The technical solution adopted by the present invention to solve its technical problems is: a reverse transmission precise self-locking structural device of the present invention comprises an active rotating disk and a self-locking shaft, the self-locking shaft passes through the center position of the active rotating disk and is in sliding cooperation with the active rotating disk, a self-locking gear is fixed on the self-locking shaft, the self-locking gear cooperates with two passive rotating disks, the two passive rotating disks are both semicircular structures, and the two passive rotating disks are symmetrically distributed to form a disc structure, meshing teeth are provided at the inner ring of the passive rotating disk, the passive rotating disk meshes with the self-locking gear on the self-locking shaft through the meshing teeth, two fixed columns are provided between the two passive rotating disks, the fixed columns are fixed on the main shaft rotating disk, and rotate synchronously with the main shaft rotating disk, a passive rotating cover is provided at the upper end of the passive rotating disk, the passive rotating cover covers the outer end of the passive rotating disk, a spring is pressed inwardly on the passive rotating cover, and the other end of the spring is pressed on the outer end of the passive rotating disk.
[0005] Limiting grooves are also arranged on both sides of the passive rotating disk, and limiting posts are matched on the limiting grooves.
[0006] The limiting column is fixed on the passive rotating cover.
[0007] The beneficial effects of the present invention are as follows: compared with the prior art, a reverse transmission precise self-locking structural device of the present invention is self-locking through the meshing and separation between the self-locking gear on the self-locking shaft and the meshing teeth on the two passive rotating disks. When the active rotating disk rotates clockwise or counterclockwise, under the pressure of the two fixed columns, the self-locking gear on the self-locking shaft separates from the meshing teeth on the two passive rotating disks, and the active rotating disk drives the passive rotating disk to rotate clockwise or counterclockwise. When the active rotating disk does not rotate, under the elastic pressure of the spring, the self-locking gear on the self-locking shaft meshes with the meshing teeth on the two passive rotating disks, and the passive rotating disk is self-locked and fixed to the self-locking shaft, and the passive rotating cover is directly connected to the drum of the rolling door machine, and the rolling door machine is directly physically self-locked, which solves the problems of power outages, transmission chain breakage, and electronic lock rectifier silicon being struck by lightning. The use of this mechanical self-locking structure has high safety and reliability, and the use of gear transmission has the advantages of precise self-locking and the like. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The following is a further description of a reverse transmission precise self-locking structural device of the present invention in conjunction with the accompanying drawings and specific implementation methods.
[0009] Figure 1 It is a schematic diagram of the structure of a reverse transmission precise self-locking structural device of the present invention in a normal stop state;
[0010] Figure 2 It is a schematic diagram of the side structure of a reverse transmission precise self-locking structural device of the present invention in a normal stop state;
[0011] Figure 3 It is a schematic structural diagram of a reverse transmission precise self-locking structural device of the present invention when the active rotating disk rotates clockwise;
[0012] Figure 4 It is a schematic structural diagram of a reverse transmission precise self-locking structural device of the present invention when the active rotating disk rotates counterclockwise;
[0013] Figure 5 It is a schematic structural diagram of a reverse transmission precise self-locking structural device of the present invention when the active rotating disk is self-locked clockwise;
[0014] Figure 6 It is a schematic structural diagram of a reverse transmission precise self-locking structural device of the present invention when the active rotating disk is self-locked counterclockwise. DETAILED DESCRIPTION
[0015] like Figure 1 and Figure 2As shown, a reverse transmission precise self-locking structural device of the present invention includes an active rotating disk 1 and a self-locking shaft 2. The active rotating disk 1 is connected to the motor shaft of the motor rolling door machine and is driven to rotate by the motor shaft of the motor rolling door machine. The self-locking shaft 2 is fixed on the frame. The center position of the active rotating disk 1 has a through hole (not shown in the figure). The self-locking shaft 2 passes through the through hole at the center position of the active rotating disk 1. The self-locking shaft 2 and the active rotating disk 1 are in sliding cooperation, that is, the active rotating disk 1 is driven to rotate by the motor, and the self-locking shaft 2 is in a fixed state. A self-locking gear 21 is fixed on the self-locking shaft 2, and the self-locking gear 21 cooperates with two passive rotating disks 3.
[0016] like Figure 1 and Figure 2 As shown, the two passive rotating disks 3 are both semicircular structures, and the two passive rotating disks 3 are symmetrically distributed to form a disc structure. The inner ring of the passive rotating disk 3 is provided with meshing teeth 31, and the passive rotating disk 3 meshes with the self-locking gear 21 on the self-locking shaft 2 through the meshing teeth 31. Two fixed columns 11 are provided between the two passive rotating disks 3, that is, two fixed columns 11 are sandwiched in the gap between the two passive rotating disks 3, and the two fixed columns 11 are distributed on both sides of the passive rotating disk 3. The fixed columns 11 are fixed on the main shaft rotating disk 1, and the fixed columns 11 rotate synchronously with the main shaft rotating disk 1. A passive rotating cover 4 is provided at the upper end of the passive rotating disk 3, and the passive rotating cover 4 covers the outer end of the passive rotating disk 3. A spring 41 is pressed inwardly on the passive rotating cover 4, and the other end of the spring 41 is pressed on the outer end of the passive rotating disk 3. A spring hole 33 is provided at the outer end of the passive rotating disk 3, and one end of the spring 41 is pressed by the passive rotating cover 4, and the other end of the spring 41 is pressed on the passive rotating disk 3. The passive rotating disk 3 is also provided with limiting grooves 32 on both sides, and the limiting grooves 32 are matched with limiting posts 42. The limiting posts 42 are fixed on the passive rotating cover 4, and the limiting posts 42 and the passive rotating cover 4 protect synchronous movement.
[0017] like Figure 3 As shown, when the main shaft rotating disk 1 rotates clockwise, the main shaft rotating disk 1 and the two fixed columns 11 rotate clockwise. At this time, the fixed column 11 on the right presses on the passive rotating disk 3 below, and the fixed column 11 on the left presses on the passive rotating disk 3 above. The passive rotating disk 3 below and the passive rotating disk 3 above are driven to rotate by the fixed column 11 on the right and the fixed column 11 on the left. The passive rotating disk 3 below and the passive rotating disk 3 above compress the spring 41 under the pressure of the two fixed columns 11, so that the meshing teeth 31 of the passive rotating disk 3 are separated from the self-locking gear 21 on the self-locking shaft 2. At this time, the passive rotating cover 4 and the passive rotating disk 3 are driven to rotate by the main shaft rotating disk 1, and the self-locking shaft 2 is not self-locking.
[0018] like Figure 4As shown, when the main shaft rotating disk 1 rotates counterclockwise, the main shaft rotating disk 1 and the two fixed columns 11 rotate counterclockwise. At this time, the fixed column 11 on the left side presses on the passive rotating disk 3 below, and the fixed column 11 on the right side presses on the passive rotating disk 3 above. The passive rotating disk 3 below and the passive rotating disk 3 above are driven to rotate by the fixed columns 11 on the left and the fixed columns 11 on the right. The passive rotating disk 3 below and the passive rotating disk 3 above are compressed by the spring 41 under the pressure of the two fixed columns 11, so that the meshing teeth 31 of the passive rotating disk 3 are separated from the self-locking gear 21 on the self-locking shaft 2. At this time, the passive rotating cover 4 and the passive rotating disk 3 are driven to rotate by the main shaft rotating disk 1, and the self-locking shaft 2 is not self-locking.
[0019] like Figure 5 and Figure 6 As shown, when the main shaft rotating disk 1 stops after rotating clockwise or counterclockwise, since the fixed column 11 stops rotating, the fixed column 11 has no pressure on the passive rotating disk 3, and the passive rotating disk 3 is pressed inwardly under the elastic force of the spring 41, so that the meshing teeth 31 of the passive rotating disk 3 mesh with the self-locking gear 21 on the self-locking shaft 2. At this time, the passive rotating cover 4 and the passive rotating disk 3 are both fixed to the self-locking shaft 2, that is, when the motor of the rolling door machine stops rotating, the passive rotating disk 3 is disengaged from the main shaft rotating disk 1, and is self-locked and fixed by the self-locking shaft 2, thereby having a safe self-locking and anti-falling function.
[0020] To sum up, compared with the prior art, the reverse transmission precise self-locking structural device of the present invention is self-locking through the meshing and separation between the self-locking gear on the self-locking shaft and the meshing teeth on the two passive rotating disks. When the active rotating disk rotates clockwise or counterclockwise, under the pressure of the two fixed columns, the self-locking gear on the self-locking shaft separates from the meshing teeth on the two passive rotating disks, and the active rotating disk drives the passive rotating disk to rotate clockwise or counterclockwise. When the active rotating disk does not rotate, under the elastic pressure of the spring, the self-locking gear on the self-locking shaft meshes with the meshing teeth on the two passive rotating disks, and the passive rotating disk is self-locked and fixed to the self-locking shaft, and the passive rotating cover is directly connected to the drum of the rolling door machine, and the rolling door machine is directly physically self-locked, which solves the problems of power outages, transmission chain breakage, and electronic lock rectifier silicon being struck by lightning. The use of this mechanical self-locking structure has high safety and reliability, and the use of gear transmission has the advantages of precise self-locking and the like.
[0021] The present invention has been described illustratively and not restrictively according to the embodiments of the present invention, but it should be understood that changes and / or modifications may be made by those skilled in the art without departing from the relevant protection scope defined by the claims.
Claims
1. A reverse transmission precise self-locking structural device, characterized by: It includes an active rotating disk and a self-locking shaft. The self-locking shaft passes through the center position of the active rotating disk and is in sliding cooperation with the active rotating disk. A self-locking gear is fixed on the self-locking shaft. The self-locking gear cooperates with two passive rotating disks. The two passive rotating disks are both semicircular structures, and the two passive rotating disks are symmetrically distributed to form a disc structure. Meshing teeth are provided at the inner ring of the passive rotating disk. The passive rotating disk meshes with the self-locking gear on the self-locking shaft through the meshing teeth. Two fixing columns are provided between the two passive rotating disks. The fixing columns are fixed on the main shaft rotating disk and rotate synchronously with the main shaft rotating disk. A passive rotating cover is provided at the upper end of the passive rotating disk. The passive rotating cover covers the outer end of the passive rotating disk. A spring is pressed inwardly on the passive rotating cover, and the other end of the spring is pressed on the outer end of the passive rotating disk.
2. A reverse transmission precise self-locking structural device according to claim 1, characterized in that: Limiting grooves are also arranged on both sides of the passive rotating disk, and limiting posts are matched on the limiting grooves.
3. A reverse transmission precise self-locking structural device according to claim 2, characterized in that: The limiting column is fixed on the passive rotating cover.