A gear rotation-stopping mechanism and a turntable mechanism

Abstract

The utility model discloses a gear rotation stopping mechanism and carousel mechanism belong to mechanical field, including fixed base and the rotation stopping subassembly of fixed on fixed base, and with carousel drive piece synchronous drive's rotation stopping drive motor, under the electrification state, rotation stopping drive motor drives rotation stopping subassembly and rotates away with carousel drive piece synchronous gear, under the power-off state, rotation stopping drive motor loses the electricity and releases rotation stopping subassembly, and then rotation stopping subassembly contacts and hinders the rotation of gear to realize the rotation stopping, the present application passes through rotation stopping subassembly, makes rotation stopping subassembly contact and hinder the rotation of gear to realize the rotation stopping after power failure, can effectively make up the security risk that carousel continues to overshoot rotation after abnormal power failure of existing mechanism, reaches fast rotation stopping.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to a gear anti-rotation mechanism and a turntable mechanism. Background Technology

[0002] When operating a turntable mechanism, operators often encounter abnormal situations requiring an emergency stop. However, the turntable typically does not stop rotating immediately after a power outage; it continues to rotate due to inertia until it gradually comes to a stop. This overshooting rotation can worsen the injury to the operator. Current technology generally uses safety light curtains to control the emergency stop of the turntable while it is powered on. When an operator touches the safety light curtain area, the turntable can be stopped instantly during rotation, effectively preventing injury from the rotating mechanism. However, if the operator has already been caught or pulled when the turntable starts rotating, and the light curtain malfunctions and fails to provide an emergency stop, the operator must urgently press the emergency stop button to cut off the turntable's power. After the power outage, the turntable will continue to rotate due to inertia until it gradually comes to a stop. This overshooting rotation can worsen the injury to the operator, failing to protect their safety.

[0003] Therefore, there is an urgent need for a mechanism that can quickly stop the rotation after an abnormal power outage to overcome the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to realize a mechanism and turntable mechanism that can quickly stop the turntable after an abnormal power failure.

[0005] The objective of this utility model is achieved through the following technical solution: A gear anti-rotation mechanism includes a fixed base, an anti-rotation component fixed on the fixed base, and an anti-rotation drive motor that is synchronously driven with a turntable drive component. When powered on, the anti-rotation drive motor drives the anti-rotation component away from the gear that rotates synchronously with the turntable drive component; In the power-off state, the anti-rotation drive motor loses power and releases the anti-rotation component, thereby the anti-rotation component contacts and hinders the rotation of the gear to achieve anti-rotation.

[0006] Preferably, the anti-rotation assembly includes an anti-rotation element, which includes a rack gear and a bearing. One end of the rack gear is rotatably connected to the fixed base through the bearing, and the rack gear and the gear are located on the same horizontal plane.

[0007] Preferably, the anti-rotation component further includes a universal ball, through which the bar gear slides on the fixed base.

[0008] Preferably, the anti-rotation assembly further includes an elastic tightening member, which includes a fixed end, a traction section, and an elastic element. One end of the elastic element is connected to the fixed base through the fixed end, and the other end is fixedly connected to the smooth side of the rack gear. One end of the traction section is fixedly connected to the rack gear, and the other end is connected to the anti-rotation drive motor.

[0009] Preferably, the elastic tightening component further includes a wire winding wheel, which is located on the fixed end, and the anti-rotation drive motor is a wire tightening motor, which is connected to the wire winding wheel in a transmission connection.

[0010] Preferably, the traction section is a steel wire rope, and the elastic element is a compression spring.

[0011] Preferably, there are multiple elastic elements, which are located on both sides of the traction section.

[0012] Preferably, the gear anti-rotation mechanism further includes a positioning element, which includes a baffle and an optical coupler. The baffle is located at one end of the bar gear, and the optical coupler is fixed to the fixed base on the same side as the baffle.

[0013] Preferably, the number of optical couplers is two.

[0014] A turntable mechanism includes the aforementioned gear anti-rotation mechanism, and further includes a turntable and a turntable drive component, wherein the turntable drive component includes a turntable drive motor and a gear connected to the turntable drive motor.

[0015] Compared with existing technologies, the gear anti-rotation mechanism and turntable mechanism of this utility model have the following advantages: The gear anti-rotation mechanism and turntable mechanism of this application release potential energy through the elastic element of the anti-rotation component after power failure, so that the rack gear meshes with the gear. This can effectively make up for the safety hazards of the turntable continuing to overshoot and rotate after abnormal power failure in existing mechanisms. Even if the operator is operating the machine normally, the possibility of this abnormality is low. However, once it occurs, the mechanism can stop the turntable instantly, which can play an absolute role in protecting the personal safety of the personnel. This mechanism effectively makes up for the safety hazards of existing mechanisms and makes the operation of the turntable mechanism safer. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present application. In the drawings: Figure 1 This is a schematic diagram of the turntable mechanism of this utility model; Figure 2This is a schematic diagram of the gear anti-rotation mechanism of this utility model; Figure 3 This is a partial structural schematic diagram of the gear anti-rotation mechanism of this utility model from another perspective.

[0017] In the diagram: 100, turntable; 200, turntable drive component; 201, pinion; 202, gear; 203, turntable drive motor; 300, anti-rotation component; 301, rack gear; 302, bearing; 303, universal ball; 400, elastic tensioning component; 401, traction section; 402, elastic component; 403, anti-rotation drive motor; 404, fixed end; 405, wire winding wheel; 500, fixed base; 600, baffle; 700, optocoupler. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Figures 1-3 The present invention provides a gear anti-rotation mechanism and a turntable mechanism, including a fixed base 500, an anti-rotation component fixed on the fixed base 500, and an anti-rotation drive motor 403 that is synchronously driven with the turntable drive component 200. When powered on, the anti-rotation drive motor 403 drives the anti-rotation component away from the gear that rotates synchronously with the turntable drive component 200; In the power-off state, the anti-rotation drive motor 403 loses power and releases the anti-rotation component, thereby the anti-rotation component contacts and hinders the rotation of the gear to achieve anti-rotation.

[0021] The anti-rotation assembly includes an anti-rotation component 300, which includes a rack gear 301 and a bearing 302. One end of the rack gear 301 is rotatably connected to the fixed base 500 through the bearing 302. The rack gear 301 and the gear are located on the same horizontal plane.

[0022] In a preferred embodiment of this application, the anti-rotation component 300 further includes a universal ball 303, which is located on the lower end face of the rack gear 301 away from the bearing 302, and slides on the fixed base 500 via the universal ball 303. The universal ball 303 is provided on the lower end face of the rack gear 301 away from the bearing 302 and slides in engagement with the fixed base 500. The rolling friction characteristics of the universal ball 303 significantly reduce sliding resistance, while the point contact positioning characteristics of the universal ball 303 ensure that the rack gear 301 maintains precise meshing throughout its movement.

[0023] The anti-rotation assembly also includes an elastic tightening member 400, which includes a fixed end 404, a traction section 401, and an elastic member 402. One end of the elastic member 402 is connected to the fixed base 500 through the fixed end 404, and the other end is fixedly connected to the smooth side of the rack gear 301. One end of the traction section 401 is fixedly connected to the rack gear 301, and the other end is connected to the anti-rotation drive motor 403.

[0024] Under normal conditions, the rack gear 301 tightens the traction section 401 away from the pinion 201 through the anti-rotation drive motor 403. At this time, the elastic element 402 is in a compressed state. When the turntable 100 in the rotating state experiences an abnormal power failure, the anti-rotation drive motor 403 loses its kinetic energy. At this time, the elastic element 402 releases its elastic force, causing the rack gear 301 to mesh with the pinion 201, thereby driving the turntable 100 to stop rotating.

[0025] Specifically, the fixed end 404 and the anti-rotation drive motor 403 are respectively fixed on the upper and lower sides of the fixed base 500.

[0026] The elastic tightening component 400 also includes a wire winding wheel 405, which is located on the fixed end 404. The anti-rotation drive motor 403 is a wire tightening motor, and the wire tightening motor is connected to the wire winding wheel 405 in a transmission connection.

[0027] In a preferred embodiment of this application, the traction section 401 is a steel wire rope, and the elastic element 402 is a compression spring. The two ends of the elastic element 402 are fixedly connected. Specifically, there are multiple elastic elements 402, each located on both sides of the traction section 401. By using a steel wire rope as the traction section 401 and a compression spring as the elastic element 402, and by using a steel wire tensioning motor to drive a steel wire winding wheel 405 to wind and unwind the steel wire rope, the high tensile strength of the steel wire rope and the elastic restoring characteristics of the compression spring are utilized to achieve stable transmission and elastic buffering of traction power, effectively offsetting load fluctuations during transmission and improving the operational reliability of the traction system.

[0028] The gear anti-rotation mechanism also includes a positioning component, which includes a baffle 600 and an optical coupler 700. The baffle 600 is located at one end of the rack gear 301, and the optical coupler 700 is fixed on the fixed base 500 on the same side as the baffle 600.

[0029] Specifically, there are two optocouplers 700. The side closer to the fixed end 404 is the initial photoelectric position, at which time the elastic element 402 is in a compressed state; the side closer to the turntable 100 is the final photoelectric position, at which time the bar gear 301 meshes with the pinion 201, and the turntable 100 stops rotating. This application uses two optocouplers 700 to calibrate the initial and final photoelectric positions respectively, which can accurately sense the compressed state of the elastic element 402 and the gear meshing state, and achieve precise positioning of the traction stroke and the rotation of the turntable 100.

[0030] Specifically, the traction section 401 is connected to the rack gear 301 via a lifting ring. This connection simplifies the assembly and disassembly process of the traction section 401 and the rack gear 301.

[0031] This application also includes a turntable mechanism, including a gear anti-rotation mechanism, a turntable 100 and a turntable drive 200, the turntable drive 200 including a turntable drive motor 203 and gears connected to the turntable drive motor 203.

[0032] In one embodiment of this application, the turntable drive 200 includes a pinion 201 and a gear 202, which mesh with each other, and a fixed base 500 is disposed close to the pinion 201.

[0033] In a preferred embodiment of this application, the turntable drive 200 includes a multi-stage gear set designed according to actual conditions such as rotational speed and torque.

[0034] The implementation process of this application is as follows: First, after the machine is installed and debugged, the turntable 100 can rotate and operate normally. When the machine is powered on, one end of the rack gear 301 is fixed to the fixed base 500 with the bearing 302, and the other end is at the initial photoelectric position of the optocoupler 700. A sliding universal ball 303 is fixed at the bottom of the rack gear 301. The universal ball 303 rotates and slides along the bearing 302. The anti-rotation drive motor 403 drives the wire winding wheel 405 to tighten the traction section 401 and the elastic element 402 is in a pressing state. When the turntable 100 in the rotating state experiences an abnormal power failure, the anti-rotation drive motor 403 instantly cuts off the kinetic energy, the traction section 401 of the turntable drive component 200 loosens, and the rack gear 301 is instantly ejected by the elastic element 402 and meshes with the pinion 201. Finally, at the moment of meshing, the pinion 201 and the large gear 202 stop rotating, thereby stopping the turntable 100 instantly. The entire power outage process is completed instantaneously until the turntable 100 stops. The gear anti-rotation mechanism and turntable mechanism of this application release potential energy through the elastic element 402, causing the rack gear 301 to mesh with the pinion 201. This effectively compensates for the safety hazard of the turntable 100 continuing to overshoot and rotate after an abnormal power outage in existing mechanisms. Even if the operator is operating the machine normally, the probability of this abnormality is low. However, if it does occur, the mechanism can instantly stop the turntable 100, providing absolute protection for personnel safety. This mechanism effectively compensates for the safety hazards of existing mechanisms, making the operation of the turntable 100 safer.

[0035] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A gear anti-rotation mechanism, characterized in that: It includes a fixed base, an anti-rotation component fixed on the fixed base, and an anti-rotation drive motor that drives synchronously with the turntable drive component; When powered on, the anti-rotation drive motor drives the anti-rotation component away from the gear that rotates synchronously with the turntable drive component; In the power-off state, the anti-rotation drive motor loses power and releases the anti-rotation component, thereby the anti-rotation component contacts and hinders the rotation of the gear to achieve anti-rotation.

2. The gear anti-rotation mechanism according to claim 1, characterized in that: The anti-rotation assembly includes an anti-rotation element, which includes a rack gear and a bearing. One end of the rack gear is rotatably connected to the fixed base through the bearing, and the rack gear and the gear are located on the same horizontal plane.

3. The gear anti-rotation mechanism according to claim 2, characterized in that: The anti-rotation component also includes a universal ball, through which the bar gear slides on the fixed base.

4. The gear anti-rotation mechanism according to claim 2, characterized in that: The anti-rotation assembly also includes an elastic tightening member, which includes a fixed end, a traction section, and an elastic element. One end of the elastic element is connected to the fixed base through the fixed end, and the other end is fixedly connected to the smooth side of the rack gear. One end of the traction section is fixedly connected to the rack gear, and the other end is connected to the anti-rotation drive motor.

5. The gear anti-rotation mechanism according to claim 4, characterized in that: The elastic tightening component also includes a wire winding wheel, which is located on the fixed end. The anti-rotation drive motor is a wire tightening motor, which is connected to the wire winding wheel in a transmission connection.

6. The gear anti-rotation mechanism according to claim 4, characterized in that: The traction section is a steel wire rope, and the elastic element is a compression spring.

7. The gear anti-rotation mechanism according to claim 4, characterized in that: There are multiple elastic elements, which are located on both sides of the traction section.

8. The gear anti-rotation mechanism according to claim 2, characterized in that: The gear anti-rotation mechanism further includes a positioning element, which includes a baffle and an optical coupler. The baffle is located at one end of the bar gear, and the optical coupler is fixed to the fixed base on the same side as the baffle.

9. The gear anti-rotation mechanism according to claim 8, characterized in that: The number of optocouplers is two.

10. A turntable mechanism, characterized in that: The device includes the gear anti-rotation mechanism as described in any one of claims 1-9, and further includes a turntable and a turntable drive component, wherein the turntable drive component includes a turntable drive motor and a gear connected to the turntable drive motor.

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