CN219177436U

CN219177436U - Overload protection structure

Info

Publication number: CN219177436U
Application number: CN202320227553.5U
Authority: CN
Inventors: 姜九江; 杨智勇; 项建敏
Original assignee: Hangzhou Cheerday Beer Co ltd
Current assignee: Hangzhou Cheerday Beer Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-06-13
Anticipated expiration: 2033-02-16

Abstract

The utility model discloses an overload protection structure, which aims to solve the defects that the existing overload protection structure has large requirement on space in the elastic deformation direction and is not beneficial to being arranged at a narrow position. The utility model comprises a roller attached to a deformation surface of a device to be detected, a rotating shaft fixedly connected with the roller, an encoder for measuring the rotating angle of the rotating shaft and a mounting seat for positioning the encoder, wherein the rotating shaft is eccentrically connected with the roller, a coil spring is connected between the rotating shaft and the mounting seat, the direction of the force of the device to be detected on the roller is a first direction, the direction from the contact point of the device to be detected and the roller to an eccentric connection point is a second direction, and the first direction and the second direction are not collinear. The application provides an overload protection device for measuring deformation degree of a deformation surface by using the rotation angle of an eccentric roller, and the deformation of the deformation surface in the normal phase direction is converted into a measurement structure attached to the deformation surface, so that the occupation of the space in the elastic deformation direction is greatly reduced.

Description

Overload protection structure

Technical Field

The utility model relates to the field of overload protection of mechanical structures, in particular to an overload protection structure.

Background

After the execution part of the mechanical structure is blocked by faults, the power part continuously provides power, and the load applied to the device exceeds the limit to cause the damage of the device. By providing an overload protection structure, the power of the power section can be cut off after the execution section is stuck. And when the worker eliminates the fault, the worker can start the machine again to ensure the normal work of the mechanical structure.

The current overload protection structure generally comprises a spring and an inductive switch, when the load borne by the executing part is lifted, elastic deformation can be generated, the spring is compressed, so that the inductive bracket reaches the position of the inductive switch, overload protection is triggered, and the power part does not provide power any more.

The disadvantage of the above-described device is that the spring and the inductive switch need to occupy more space in the direction of elastic deformation, which is disadvantageous for placement inside some narrow devices.

In view of this, the present application aims to realize an overload protection structure that reduces the space occupation for the elastic deformation direction.

Disclosure of Invention

The overload protection structure overcomes the defects that the existing overload protection structure has large requirement on space in the elastic deformation direction and is not beneficial to being arranged at a narrow position, and can reduce the occupation of the space in the elastic deformation direction.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides an overload protection structure, include with the gyro wheel of waiting to detect the laminating of the deformation face of device, the pivot of fixed connection gyro wheel, measure the encoder of pivot turned angle and be used for the mount pad of location encoder, pivot and gyro wheel eccentric connection are connected, be connected with the coil spring between pivot and the mount pad, wait to detect the direction of device to the gyro wheel and be first direction, wait to detect the direction of the contact point to the eccentric tie point of device and gyro wheel and be the second direction, first direction and second direction are non-collineation.

When the load applied to the device to be detected is too large, elastic deformation (i.e. the deformation capable of resetting) can be generated on the surface of the device to be detected, and if the space position of the elastic deformation direction is smaller, the overload protection structure in the prior art is quite unfavorable to install. The present application provides a roller that is essentially an eccentric. And through setting up the position of gyro wheel, receive the load when waiting to detect the device, after producing deformation, can produce the thrust with the normal looks direction of elastic deformation face for the gyro wheel, this thrust is along first direction, because the elastic deformation face is not collinear with eccentric tie point's direction that is second direction and first direction, consequently, can produce the component perpendicular with the second direction, this component can promote the gyro wheel and rotate, the rotation of gyro wheel drives the rotation of pivot, the spring force of coil spring has been overcome in the pivot, relative encoder rotates, the encoder has recorded the deflection angle of pivot, trigger the alarm after reaching certain limit, cut off power. The elastic deformation surface losing the load can be reset, no corresponding pressure is generated on the roller, the roller is only subjected to the elastic force of the coil spring at the moment, and the coil spring rotates to drive the rotating shaft and the roller to reset to the initial state. Through above-mentioned structure, this application utilizes the gyro wheel to change the mode of laying of current overload protection structure along deformation face normal phase direction into the mode laminating with the deformation face, greatly reduced the occupation to the space of elastic deformation direction.

Preferably, the rotation axis is parallel to the deformation surface of the device to be detected. The mode parallel to the deformation surface of the device to be detected simplifies the change of the gesture of the roller in the motion process and simplifies the design complexity.

Preferably, the rotary shaft is provided with a damping piece, and the damping piece is abutted against the rotary shaft. When the roller is reset, the damping fin can prevent the roller from reciprocating and swinging, so that the roller is reset rapidly.

Preferably, the encoder is electrically connected to the controller. The controller is electrically connected with the power part of the device to be detected, receives the electric signal of the encoder, and controls the power part to cut off power when the value indicated by the electric signal exceeds a threshold value.

Preferably, the side wall surface of the roller is provided with a friction layer. The friction layer comprises friction lines, and the friction layer prevents slipping between the roller and the device to be detected.

Compared with the prior art, the utility model has the beneficial effects that: the application provides an overload protection device for measuring deformation degree of a deformation surface by using the rotation angle of an eccentric roller, and the deformation of the deformation surface in the normal phase direction is converted into a measurement structure attached to the deformation surface, so that the occupation of the space in the elastic deformation direction is greatly reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of the device to be tested according to the utility model without deformation;

FIG. 3 is a schematic diagram of the deformation of the device to be tested according to the present utility model;

in the figure:

the device comprises a deformation surface 1, a roller 2, a friction layer 3, a rotating shaft 4, a mounting seat 5, an encoder 6, a coil spring 7, a first direction 8, a second direction 9 and a damping fin 10.

Detailed Description

The disclosure is further described below with reference to the drawings and examples.

Examples:

the device is used for implementing the overload protection device on a sterilizing machine and is used for detecting a chain net of a sterilizing agent so as to provide effective protection for the sterilizing agent.

An overload protection structure, as shown in fig. 1 to 3, comprises a roller 2 attached to a deformation surface 1 of a device to be detected, a rotating shaft 4 fixedly connected with the roller 2, an encoder 6 for measuring the rotating angle of the rotating shaft 4, and a mounting seat 5 for positioning the encoder 6, wherein the rotating shaft 4 is eccentrically connected with the roller 2, a coil spring 7 is connected between the rotating shaft 4 and the mounting seat 5, the direction of the force of the device to be detected on the roller 2 is a first direction 8, the direction from the contact point of the device to be detected on the roller 2 to an eccentric connection point is a second direction 9, and the first direction 8 and the second direction 9 are not collinear. The encoder 6 is electrically connected to a controller. The controller is electrically connected with the power part of the device to be detected, receives the electric signal of the encoder 6, and controls the power part to cut off power when the value indicated by the electric signal exceeds a threshold value. The side wall surface of the roller 2 is provided with a friction layer 3. The friction layer 3 comprises friction lines, and the friction layer 3 prevents slipping between the wheel 2 and the device to be detected.

When the load applied to the device to be detected is too large, elastic deformation (i.e. the deformation capable of resetting) can be generated on the surface of the device to be detected, and if the space position of the elastic deformation direction is smaller, the overload protection structure in the prior art is quite unfavorable to install. The present application provides a roller 2 that is essentially an eccentric. And through setting up the position of gyro wheel 2, after waiting to detect the device and receiving the load, produce deformation, can produce the thrust with elastic deformation face 1 normal looks direction for gyro wheel 2, this thrust is along first direction 8, because elastic deformation face 1 and eccentric tie point's direction that is second direction 9 and first direction 8 are not collinear, consequently, can produce the component perpendicular with second direction 9, this component can promote gyro wheel 2 rotation, the rotation of gyro wheel 2 drives the rotation of pivot 4, the elasticity of coil spring 7 has been overcome to pivot 4, relative encoder 6 rotates, encoder 6 has recorded the deflection angle of pivot 4, trigger the alarm after reaching certain limit, cut off power. The elastic deformation surface 1 losing the load can be reset, no corresponding pressure is generated on the roller 2, the roller 2 is only subjected to the elastic force of the coil spring 7 at the moment, and the coil spring 7 rotates to drive the rotating shaft 4 and the roller 2 to be reset to the initial state. Through above-mentioned structure, this application utilizes gyro wheel 2 to change the mode of laying of current overload protection structure along deformation face 1 normal phase direction into the mode of laminating with deformation face 1, greatly reduced the occupation to the space of elastic deformation direction.

In some embodiments, the axis of rotation 4 is parallel to the deformation surface 1 of the device to be inspected. The mode parallel to the deformation surface 1 of the device to be detected simplifies the change of the gesture of the roller 2 in the motion process and simplifies the design complexity.

In some embodiments, a damping sheet 10 is further included, and the damping sheet 10 abuts against the rotating shaft 4. When the roller 2 is reset, the damping fin 10 can prevent the roller 2 from swinging reciprocally, so that the roller 2 is reset rapidly.

The above-described embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

Claims

1. The utility model provides an overload protection structure, characterized by, including with wait that the deformation face of detection device laminating is gyro wheel, the pivot of fixed connection gyro wheel, measure the encoder of pivot turned angle and be used for locating the mount pad of encoder, pivot and gyro wheel eccentric connection are connected, are connected with the coil spring between pivot and the mount pad, wait to detect the direction of device to the gyro wheel and be first direction, wait to detect the direction of the contact point to the eccentric tie point of device and gyro wheel and be the second direction, first direction and second direction non-collineation.

2. An overload protection structure according to claim 1, wherein the rotation axis is parallel to the deformation surface of the device to be detected.

3. The overload protection structure of claim 1, further comprising a damper, the damper abutting the shaft.

4. An overload protection structure according to claim 1, wherein the encoder is electrically connected to the controller.

5. An overload protection structure according to any one of claims 1 to 4, wherein the side wall surface of the roller is provided with a friction layer.