CN219104050U

CN219104050U - LVDT sensor assembly for mechanical arm

Info

Publication number: CN219104050U
Application number: CN202223595058.4U
Authority: CN
Inventors: 王虎强; 杨凯翔; 朱明慧; 赵伟军
Original assignee: Lanzhou Flight Control Co Ltd
Current assignee: Lanzhou Flight Control Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-30
Anticipated expiration: 2032-12-29

Abstract

The utility model belongs to the technical field of mechanical arm motion sensing, and particularly relates to an LVDT sensor assembly for a mechanical arm; the LVDT sensor is based on two magnet supporting blocks, is adsorbed and mounted on a fixed connecting rod and a movable connecting rod of a mechanical arm which perform linear motion, and is used for measuring linear displacement data between the fixed connecting rod and the movable connecting rod.

Description

LVDT sensor assembly for mechanical arm

Technical Field

The utility model belongs to the technical field of motion sensing of mechanical arms, and particularly relates to an LVDT sensor assembly for a mechanical arm.

Background

The arm is often used for the higher work occasion of positioning accuracy, needs to install displacement sensor and feeds back positional information in real time so as to realize accurate location, and current displacement sensor mounting structure is complicated, consequently need optimize its mounting structure to reduce the structure complexity.

Disclosure of Invention

In view of this, the utility model provides an LVDT sensor assembly for a mechanical arm, in which an LVDT sensor (differential transformer type displacement sensor) is mounted on a fixed link and a movable link of the mechanical arm for linear motion based on two magnet supporting blocks, and is used for measuring linear displacement data between the fixed link and the movable link.

In order to achieve the technical purpose, the utility model adopts the following specific technical scheme:

an LVDT sensor assembly for a robotic arm, the robotic arm comprising:

a fixed connecting rod;

a motor fixed on the fixed connecting rod,

the track is fixedly and slidably arranged on the fixed connecting rod, and the motor drives the movable connecting rod to perform linear sliding motion along the track;

the sensor assembly includes:

the first permanent magnet supporting block is adsorbed on the fixed connecting rod;

the second permanent magnet supporting block is adsorbed on the movable connecting rod;

and the LVDT sensor is provided with a telescopic rod which is parallel to the track, one of a base or the telescopic rod is arranged on the first permanent magnet supporting block, and the other of the base or the telescopic rod is arranged on the second permanent magnet supporting block.

Further, the LVDT sensor is installed between the first permanent magnet support block and the second permanent magnet support block based on the end adsorption of the base and the telescopic rod.

Further, the cross section of the first permanent magnet supporting block is L-shaped, one plane adsorbs the fixed connecting rod, and the other plane adsorbs one of the base or the telescopic rod.

Further, the second permanent magnet support block has an L-shaped cross section, one plane adsorbs the moving connecting rod, and the other plane adsorbs the other of the base or the telescopic rod.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a diagram of the results of an installation of an LVDT sensor assembly for a robotic arm according to an embodiment of the present utility model;

wherein: 1. a motor; 2. a fixed connecting rod; 3. a moving connecting rod; 4. LVDT sensor; 5. a first permanent magnet support block; 6. and a second permanent magnet support block.

Detailed Description

Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

Other advantages and effects of the present disclosure will become readily apparent to those skilled in the art from the following disclosure, which describes embodiments of the present disclosure by way of specific examples. It will be apparent that the described embodiments are merely some, but not all embodiments of the present disclosure. The disclosure may be embodied or practiced in other different specific embodiments, and details within the subject specification may be modified or changed from various points of view and applications without departing from the spirit of the disclosure. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one of ordinary skill in the art will appreciate that one aspect described herein may be implemented independently of any other aspect and may be variously employed

Ways of combining two or more of these aspects. For example, an apparatus may be implemented and/or a method practiced using any 5 of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concepts of the disclosure by way of example, and that the illustrations show only the components that are relevant to the disclosure and not the number of components in accordance with an actual implementation

The purpose, shape and size of the drawing, the type, number and ratio of the components in its practical implementation may be a random 0 change, and the layout of the components may be more complex.

In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

In one embodiment of the present utility model, an LVDT sensor 4 assembly for a robotic arm is presented, as shown in fig. 1, the robotic arm comprising:

5, fixing the connecting rod 2;

a motor 1 fixed on a fixed connecting rod 2,

a moving connecting rod 3, the track is fixedly and slidingly arranged on the fixed connecting rod 2, and the moving connecting rod is driven by a motor 1 to perform linear sliding motion along the track;

as shown in fig. 1, the sensor assembly includes:

the first permanent magnet supporting block 5 is adsorbed on the fixed connecting rod 2;

a second permanent magnet support block 6 attached to the moving link 3;

the LVDT sensor 4 has a telescopic rod arranged parallel to the track, one of the base or telescopic rod being mounted on a first permanent magnet support block 5 and the other of the base or telescopic rod being mounted on a second permanent magnet support block 6.

In the present embodiment, the LVDT sensor 4 is suction-mounted between the first permanent magnet support block 5 and the second permanent magnet support block 6 based on the ends of the base and the telescopic rod.

In this embodiment, the first permanent magnet support block 5 has an L-shaped cross-sectional shape, one plane attracts the fixed link 2, and the other plane attracts one of the base or the telescopic rod.

In the present embodiment, the second permanent magnet support block 6 has an L-shaped cross-sectional shape, one plane sucking the moving link 3, the other plane sucking the other of the base or the telescopic rod.

In this embodiment, the first permanent magnet support block 5 and the second permanent magnet support block 6 are made of alnico (AINiCo). Both end portions of the LVDT sensor 4 are provided in a planar shape.

The assembly process of this embodiment is as follows: the first permanent magnet supporting block 5 is placed on the fixed connecting rod 2, the second permanent magnet supporting block 6 is placed on the movable connecting rod 3, and the contact surface is fixed by the attraction of the magnets; the LVDT sensor 4 is then placed between the permanent magnet support blocks 5 and 6 and the front and back surfaces of the LVDT sensor 4 are secured by magnet attraction. The telescopic rod of the LVDT sensor 4 is guaranteed to be parallel to the movement direction of the movable connecting rod.

The overall working principle of this embodiment is: the movable connecting rod 3 is driven to do linear motion through the rotation of the motor 1, meanwhile, the movable iron core of the LVDT sensor 4 generates linear displacement, and voltage signals are output, so that the linear displacement of the movable connecting rod 3 is monitored in real time.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the disclosure are intended to be covered by the protection scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. An LVDT sensor assembly for a robotic arm, the robotic arm comprising:

a fixed connecting rod;

a motor fixed on the fixed connecting rod,

the sensor assembly includes:

2. The LVDT sensor assembly for a robotic arm of claim 1, wherein the LVDT sensor is suction mounted between the first and second permanent magnet support blocks based on a base and ends of a telescoping rod.

3. The LVDT sensor assembly for a robotic arm of claim 2, wherein the first permanent magnet support block has an L-shaped cross-sectional shape, one planar surface attracting one of the fixed link, the other planar surface attracting one of the base or the telescoping rod.

4. The LVDT sensor assembly for a robotic arm of claim 3, wherein the second permanent magnet support block has an L-shaped cross-sectional shape, one planar surface attracting the other of the moving link, the other planar surface attracting the other of the base or telescoping rod.