Locking anti-overshoot device
By designing a locking and anti-overshoot device in a multi-layer concrete seepage anti-overshooting device, and using anti-overshooting teeth and spring mechanisms to prevent the driving gear from being toothed, the problem of teeth detached caused by deviation during long-term repeated rotation is solved, and the stable operation of the locking disc and the reduction of the failure rate is achieved.
Patent Information
- Application Number
- CN202422086556.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In multi-layer concrete anti-seepage instrument, the driving gear is prone to deviation during the long-term forward and reverse rotation, causing the end of the rack to distend, affecting the operation of the locking disc.
A locking anti-overshoot device is designed, including anti-overshoot teeth located at both ends of the rack, which rotates unidirectionally through the pin shaft and meshs with the driving gear, and the anti-overshooting teeth are maintained in an anti-overshoot state with an anti-overshooting spring to avoid tooth loss.
Effectively prevent the driving gear from distressing at the end of the rack, ensure the normal operation of the locking disc, and reduce the failure rate of the anti-seepage instrument.
Smart Images
Figure CN222864017U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locking devices for anti-seepage instruments, in particular to a locking device to prevent overshooting. Background Art
[0002] In the multi-layer concrete impermeability tester, it is necessary to unlock the test platform during each loading and unloading process. Most of the existing multi-layer concrete impermeability testers use a latch locking structure, and the servo motor is basically used to drive the latch to open and close the lock. Its working time can be controlled by servo, but in long-term repeated forward and reverse engineering, deviations are inevitable, so the drive gear may be disengaged at the end of the rack, causing the locking failure problem. Utility Model Content
[0003] The utility model aims to provide a locking anti-overshoot device to solve the problem that a gear rack driving structure is prone to tooth disengagement.
[0004] In order to solve the above technical problems, the utility model provides a locking anti-overshooting device to prevent the driving gear from overshooting and disengaging from the two ends of the rack, including anti-overshooting teeth located at the two ends of the rack, and the two anti-overshooting teeth are respectively rotated unidirectionally at the two ends of the rack through a pin shaft;
[0005] The heads of the two anti-overshoot teeth are meshed with the driving gear, and the two tails are connected by an anti-overshoot tension spring; when the driving gear is located at any end of the rack and rotates continuously, the anti-overshoot teeth rotate around the pin shaft under the action of the driving gear and tilt toward the middle of the rack to avoid the rotation of the driving gear; when the driving gear rotates in the opposite direction, the anti-overshoot teeth rotate around the pin shaft under the action of the driving gear and tilt toward the end of the rack. At this time, the middle part of the anti-overshoot teeth abuts against the end of the rack, preventing it from continuing to rotate outward, thereby re-engaging the disengaged driving gear with the rack.
[0006] Preferably, two anti-overshoot teeth are symmetrically arranged at both ends of the rack.
[0007] Preferably, the head of the anti-overshoot tooth is a tooth that meshes with the driving gear. When the anti-overshoot tooth cannot rotate, the position of the rack can be adjusted while the driving gear continues to rotate so that it meshes with the driving gear again.
[0008] Preferably, the anti-overshoot tension spring is connected between the two tails of the anti-overshoot teeth, and under the action of tension, the two anti-overshoot teeth are ensured to be always in an anti-overshoot state.
[0009] Preferably, the middle portion of the rack is rotatably connected to the rack seat via a pin shaft, and as the locking disk of the impermeability tester rotates, the rack rotates around the pin shaft to adjust its angle, so that the linear rack is always fully meshed with the driving gear.
[0010] Preferably, the rack and the anti-overshoot teeth at both ends are installed in the installation groove of the rack seat, and the rack and the anti-overshoot teeth at both ends are installed on the same plane, so that the driving gear naturally transitions between the rack and the anti-overshoot teeth.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] Although the rotary motor used to drive the gear is a servo motor, and its working time can be controlled by servo, it is inevitable that deviations will occur during long-term and repeated forward and reverse rotation. In this way, the drive gear may be dislocated at the end of the rack. Once the teeth are dislocated, it will affect the operation of the entire locking disk, making the layer of the impermeability test bench invalid. Moreover, since the impermeability test benches in the utility model are all linked, if one layer fails, the impermeability test benches on this layer and below will all lose their locking function. Therefore, the anti-overshoot mechanism of the utility model is adopted. Even if deviations occur during long-term and repeated forward and reverse rotation of the rotary motor, the anti-overshoot mechanism can adjust the position of the rack in the first time to make it mesh with the drive gear and restore the normal operation of the locking disk. It is equivalent to providing a mechanical insurance for the locking disk, which greatly reduces the failure rate of the impermeability tester. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the installation of the locking anti-overshoot device provided by the utility model in the gear rack drive structure;
[0014] Figure 2 It is a schematic diagram of the anti-overshoot state of the locking anti-overshoot device provided by the utility model;
[0015] Figure 3 It is a schematic diagram of the avoidance state of the locking anti-overshoot device provided by the utility model.
[0016] In the figure: 1. anti-overshoot tooth; 2. anti-overshoot tension spring; 3. rack seat; 4. mounting groove; 100. driving gear; 200. rack; 300. rotating motor. DETAILED DESCRIPTION
[0017] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example
[0020] The utility model provides a locking anti-overshoot device, please refer to Figure 1-3 , to prevent the driving gear 100 from overshooting and disengaging from the two ends of the rack 200, including anti-overshoot teeth 1 located at the two ends of the rack 200, and the two anti-overshoot teeth 1 are respectively rotated unidirectionally at the two ends of the rack 200 through the pin shaft; and the heads of the two anti-overshoot teeth 1 are meshed with the driving gear 100, and the two tails are connected by the anti-overshoot tension spring 2. Figure 2 As shown, when the driving gear 100 is located at any end of the rack 200 and rotates continuously, the anti-overshooting tooth 1 rotates around the pin under the action of the driving gear 100 and tilts toward the middle of the rack 200 to avoid the rotation of the driving gear 100. Figure 3 As shown, when the driving gear 100 rotates in the opposite direction, the anti-overshoot tooth 1 rotates around the pin shaft under the action of the driving gear 100 and tilts toward the end of the rack 200. At this time, the middle part of the anti-overshoot tooth 1 abuts against the end of the rack 200, preventing it from continuing to rotate outward, thereby re-engaging the disengaged driving gear 100 with the rack 200.
[0021] Specifically, two anti-overshoot teeth 1 are symmetrically arranged at both ends of the rack 200. And the head of the anti-overshoot tooth 1 is a tooth, which meshes with the driving gear 100. When the anti-overshoot tooth 1 cannot rotate, the position of the rack 200 can be adjusted under the continuous rotation of the driving gear 100 to make it mesh with the driving gear 100 again. Although the rotating motor 300 used for the rotation of the driving gear is a servo motor, its working time can be controlled by servo, but in the long-term repeated forward and reverse engineering, deviations are inevitable, so that the driving gear 100 may be dislocated at the end of the rack 200. Once dislocated, it will affect the operation of the entire locking disk, making the layer of the impermeability test bench invalid. And because the impermeability test benches in the utility model are all linked, if one layer fails, the impermeability test benches of this layer and the impermeability test benches below it will all lose their locking function. Therefore, by adopting the anti-overshoot mechanism of the utility model, even if the rotating motor 300 has deviations during long-term repeated forward and reverse rotation, the anti-overshoot mechanism can adjust the position of the rack 200 in the first time to make it mesh with the driving gear 100 and restore the normal operation of the locking disk. This is equivalent to providing a mechanical insurance for the locking disk, which greatly reduces the failure rate of the anti-permeability tester.
[0022] Furthermore, the anti-overshoot tension spring 2 is connected between the two tails of the anti-overshoot teeth 1, and ensures that the two anti-overshoot teeth 1 are always in the anti-overshoot state under the action of tension, thereby avoiding the problem that the two anti-overshoot teeth 1 cannot be reset after entering the avoidance state under the action of the driving gear 100.
[0023] Furthermore, the middle portion of the rack 200 is rotatably connected to the rack seat 3 via a pin shaft. As the locking disk of the impermeability tester rotates, the rack 200 rotates around the pin shaft to adjust its angle, so that the linear rack 200 is always fully meshed with the driving gear 100.
[0024] Furthermore, the rack 200 and the anti-overshoot teeth 1 at both ends are installed in the installation groove 4 of the rack seat 3, and the rack 200 and the anti-overshoot teeth 1 at both ends are installed on the same plane, so that the driving gear 100 naturally transitions between the rack 200 and the anti-overshoot teeth 1.
[0025] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.
Claims
1. A locking anti-overshoot device for preventing a driving gear (100) from overshooting and disengaging teeth from both ends of a rack (200), characterized in that: It comprises anti-overshoot teeth (1) located at both ends of the rack (200), and the two anti-overshoot teeth (1) are respectively unidirectionally rotated at both ends of the rack (200) via pins; The heads of the two anti-overshoot teeth (1) are meshed with the driving gear (100), and the two tails are connected via an anti-overshoot tension spring (2); when the driving gear (100) is located at any end of the rack (200) and rotates continuously, the anti-overshoot teeth (1) rotate around the pin shaft under the action of the driving gear (100) and tilt toward the middle of the rack (200) to avoid the rotation of the driving gear (100); when the driving gear (100) rotates in the opposite direction, the anti-overshoot teeth (1) rotate around the pin shaft under the action of the driving gear (100) and tilt toward the end of the rack (200); at this time, the middle of the anti-overshoot teeth (1) abuts against the end of the rack (200), so that it can no longer rotate outward, thereby re-engaging the disengaged driving gear (100) with the rack (200).
2. A locking and anti-overshooting device as claimed in claim 1, characterized in that: The two anti-overshoot teeth (1) are symmetrically arranged at two ends of the rack (200).
3. A locking and anti-overshooting device as claimed in claim 2, characterized in that: The head of the anti-overshoot tooth (1) is a tooth which meshes with the driving gear (100). When the anti-overshoot tooth (1) cannot rotate, the position of the rack (200) can be adjusted under the continuous rotation of the driving gear (100) so that it meshes with the driving gear (100) again.
4. A locking and anti-overshooting device as claimed in claim 1, characterized in that: The anti-overshoot tension spring (2) is connected between the two tails of the anti-overshoot teeth (1), and ensures that the two anti-overshoot teeth (1) are always in an anti-overshoot state under the action of tension.
5. A locking and anti-overshooting device as claimed in claim 1, characterized in that: The middle part of the rack (200) is rotatably connected to the rack seat (3) via a pin shaft. As the locking disk of the impermeability tester rotates, the rack (200) rotates around the pin shaft to adjust its angle, so that the linear rack (200) is always fully meshed with the driving gear (100).
6. A locking and anti-overshooting device as claimed in claim 5, characterized in that: The rack (200) and the anti-overshoot teeth (1) at both ends are installed in the installation groove (4) of the rack seat (3), and the rack (200) and the anti-overshoot teeth (1) at both ends are installed on the same plane, so that the driving gear (100) naturally transitions between the rack (200) and the anti-overshoot teeth (1).