CN211784776U

CN211784776U - Strength testing device

Info

Publication number: CN211784776U
Application number: CN201922075324.2U
Authority: CN
Inventors: 吴金华; 况智刚; 詹林涛; 田金如; 王进; 汪永颜
Original assignee: Fu Tai Hua Precision Electronic Zhengzhou Co Ltd
Current assignee: Fulian Precision Electronics Zhengzhou Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-10-27
Anticipated expiration: 2029-11-26

Abstract

An intensity testing device comprising: a connecting rod; the measuring head is arranged at one end of the connecting rod and used for abutting against or clamping the convex part of the workpiece; the force application piece is arranged at the other end of the connecting rod and is used for bearing external force; and the connecting rod is used for transmitting external force so that the measuring head applies force separated from the workpiece to the bulge. The strength testing device is provided with the measuring head, the measuring head is abutted to or clamped in the bulge of the workpiece, external force is applied to the force application part, the connecting rod is used for transmitting the external force to the measuring head, the measuring head applies shearing force or pulling force to the bulge, the workpiece is separated from the bulge, and strength testing is achieved. The measuring head is abutted against or clamped in the bulge part and cannot be limited by the small size of the hole arranged in the bulge part, and the strength of the measuring head is high, so that the reliability of the strength test of the measuring head on a workpiece is high.

Description

Strength testing device

Technical Field

The utility model relates to an intensity test device.

Background

When a workpiece is connected with other parts, a convex part 203 is generally arranged on the workpiece 200 in a welding or riveting connection mode, a threaded hole 2031 is arranged in the convex part 203, as shown in fig. 1, when the bonding strength between the convex part 203 and the workpiece 200 is tested, a column structure 300 with a bearing part 301 for bearing external force is adopted in the prior art, the column structure 300 is in threaded connection with the threaded hole 2031, external forces F1 and F2 are applied to the positive direction or the lateral direction of the bearing part 301, and the convex part bears shearing force or pulling force.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a strength testing apparatus to solve the above problems.

An intensity testing device comprising:

a connecting rod;

the measuring head is arranged at one end of the connecting rod and used for abutting against or clamping the protruding part of the workpiece;

the force application piece is arranged at the other end of the connecting rod and is used for bearing external force;

the connecting rod is used for transmitting the external force so that the measuring head applies force separated from the workpiece to the protruding portion.

Further, the gauge head includes:

a first clamping member;

a second clamping member;

and the connecting piece is used for connecting the first clamping piece and the second clamping piece and clamping the first clamping piece and the second clamping piece on two opposite sides of the protruding part.

Further, the first clamping piece and the second clamping piece are respectively provided with sawtooth structures in opposite directions.

Further, the gauge head further comprises:

an elastic member;

the first clamping piece is provided with a guide part extending to the second clamping piece;

the second clamping piece is provided with a guide hole;

the guide part is arranged in the guide hole and is used for sliding relative to the guide hole;

the elastic piece is arranged outside the guide part, and two ends of the elastic piece respectively abut against the first clamping piece and the second clamping piece.

Further, the connecting rod is arranged on the first clamping piece or the second clamping piece and extends to one side away from the connecting piece.

Further, the force applying member includes:

the joint is arranged on one side, deviating from the measuring head, of the connecting rod.

Further, the force application member further includes:

one end of the adapter is provided with a clamping hole, and the other end of the adapter is used for bearing external force;

the connector is used for being clamped into the clamping hole.

Further, the card hole runs through one side of the adaptor and includes:

the first hole is formed in one end, facing the connecting rod, of the adapter;

a second hole which is communicated with the first hole and has a larger hole diameter than the first hole;

the joint includes:

the connecting part is arranged on the connecting rod and is used for being clamped into the first hole from one side of the adapter;

the stopping part is arranged on one side, away from the connecting rod, of the connecting part and is used for being clamped into the second hole from one side of the adapter.

Further, the force application part is provided with a sliding hole;

the connecting rod is arranged in the sliding hole, and an included angle between the connecting rod and the force application piece is an acute angle.

Furthermore, the measuring head extends towards one side of the connecting rod, wherein the included angle between the connecting rod and the force application part is an acute angle.

Further, the measuring head is parallel to the force application part.

Further, the strength testing device further comprises:

a guide, comprising:

a support member provided with a chute; the force application piece is arranged on the sliding groove and is used for sliding in the sliding groove;

and the closing piece is arranged on the support piece and is used for closing or exposing the sliding chute.

Further, the closure includes:

the first rotating piece is arranged at one end of the supporting piece and is used for rotating relative to the supporting piece;

the second rotating piece is arranged at the other end of the supporting piece and is used for rotating relative to the supporting piece;

the pressing and holding piece is arranged on the second rotating piece and is used for rotating relative to the supporting piece;

the second rotating part is used for driving the pressing and holding part to rotate to one side of the first rotating part, which is far away from the supporting part, and the pressing and holding part rotates along the second rotating part and is used for pressing, holding and fixing the second rotating part.

The strength testing device is provided with the measuring head, the measuring head is abutted against or clamped on the bulge of the workpiece, external force is applied to the force application part, the connecting rod is used for transmitting the external force to the measuring head, the measuring head applies shearing force or pulling force to the bulge, the workpiece is separated from the bulge, and strength testing is achieved. The measuring head is abutted against or clamped in the bulge part and cannot be limited by the small size of the hole formed in the bulge part, and the measuring head is high in strength, so that the reliability of strength test on the workpiece is high.

Drawings

Fig. 1 is a prior art apparatus for performing a strength test on a workpiece.

Fig. 2 is a schematic perspective view of an embodiment of the strength testing apparatus of the present invention.

Fig. 3 is a schematic exploded perspective view of the strength testing apparatus shown in fig. 2.

FIG. 4 is a schematic view of the strength testing apparatus shown in FIG. 2 for testing the strength of another convex portion of a workpiece.

Fig. 5 is a schematic perspective view of an intensity testing device according to another embodiment of the present invention shown in fig. 1.

Fig. 6 is a schematic exploded perspective view of the strength testing apparatus shown in fig. 5.

Description of the main elements

Strength testing device

100, 400

Fixed

structure

101, 401

Connecting

rod

10, 40

Boss 41

Measuring

head

20, 50

First clamping member 21

Saw

tooth structures

211, 231

Guide part 213

Second clamping member 23

Guide hole 233

Locus of containment 2331

Connecting piece 25

Elastic member 27

Force application members

30, 60

Joint 31

Connecting part 311

Stopping part 313

Adapter 33

Card hole 331

First hole 3311

Second hole 3313

Slide hole 61

Guide member 70

Support 71

Sliding groove 711

Closure 73

First rotating part 731

Avoidance groove 7311

Groove 7313

The second rotating member 733

Pressing member 735

Pressing part 7351

Workpiece 200

Body 201

Projections 203, 203'

Threaded bore 2031

Cylinder structure 300

Receiving part 301

First direction X

Second direction Y

The following detailed description will further illustrate the present invention in conjunction with the above figures.

Detailed Description

The technology in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

An embodiment of the utility model provides an intensity testing device, include:

a connecting rod;

The strength testing device according to some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following embodiments, features of the embodiments may be combined with each other without conflict.

Referring to fig. 2 and 3, an embodiment of the present invention provides an intensity testing apparatus 100 for testing the bonding strength of a workpiece 200. Specifically, the strength testing apparatus 100 is used for performing a shear test and a tensile test on the workpiece 200. The projection 203 is welded to the body 201, but is not limited thereto. The welding direction is parallel to the extending direction of the protruding portion 203 to the side of the body 201. It is understood that, in other embodiments, the protrusion 203 and the body 201 may be connected in other manners, for example, the protrusion 203 is riveted to the body 201. The protrusion 203 is located outside the body 201.

In the shear test, a force perpendicular to the welding direction is applied to the projection 203, and the projection 203 is separated from the body 201; in the tensile test, a force parallel to the welding direction is applied to the projection 203, and the projection 203 is separated from the body 201.

The workpiece 200 is a camera support, but is not limited thereto. For example, the workpiece 200 may also be a support structure of a miniature product such as a tablet computer, an intelligent appliance, and a vehicle-mounted electronic device.

The first direction X is defined as an extending direction of the protrusion 203 toward the body 201, and the second direction Y is perpendicular to the first direction X.

The strength testing apparatus 100 includes a link 10, a probe 20, and a force applying member 30. The workpiece 200 is fixed to the body 201 by the fixing structure 101, and the protruding portion 203 is exposed. The measuring head 20 is disposed at one end of the connecting rod 10, and is used for clamping the protruding portion 203. The force applying member 30 is disposed at the other end of the connecting rod 10 and is configured to receive an external force. The link 10 transmits the external force so that the gauge head 20 applies a force to the protrusion 203 to be separated from the body 201.

The measuring head 20 comprises a first clamping part 21, a second clamping part 23 and a connecting part 25. The first clamping piece 21 and the second clamping piece 23 are oppositely arranged at two sides of the convex part 203. The connecting member 25 is used for connecting the first clamping member 21 and the second clamping member 23, so that the first clamping member 21 and the second clamping member 23 are clamped on two opposite sides of the protrusion 203.

The first clamping member 21 and the second clamping member 23 are respectively provided with a saw tooth structure 211 and a saw tooth structure 231 in an opposite direction so as to increase the clamping force of the first clamping member 21 and the second clamping member 23 to the convex part 203.

The probe 20 further comprises an elastic member 27. The first holding member 21 is provided with a guide portion 213 extending toward the second holding member 23. The second clamping member 23 is provided with a guide hole 233. The guide portion 213 is disposed in the guide hole 233 and configured to slide with respect to the guide hole 233. The guide hole 233 includes a receiving portion 2331 for receiving the elastic member 27. The elastic member 27 is sleeved outside the guiding portion 213, and two ends of the elastic member respectively abut against the bottom walls of the first clamping member 21 and the accommodating portion 2331. When the connecting member 25 is disconnected, the elastic member 27 urges the first clamping member 21 and the second clamping member 23 to move away from each other, so as to allow the protrusion 203 to enter therebetween.

It is understood that in other embodiments, the resilient member 27 may be omitted.

It is understood that in other embodiments, the receiving portion 2331 may be omitted. The elastic member 27 directly abuts against the first clamping member 21 and the second clamping member 23.

The connecting rod 10 is disposed on the second clamping member 23 and extends to a side away from the connecting member 25. The connecting rod 10 and the second clamping member 23 are of a one-piece structure, but are not limited thereto. It is understood that, in other embodiments, the connecting rod 10 may be disposed on the first clamping member 21.

The force applying member 30 includes a joint 31 and an adaptor member 33. The joint 31 is disposed on a side of the connecting rod 10 away from the measuring head 20. One end of the adaptor 33 is provided with a clamping hole 331, and the other end is used for connecting an external force application device. The joint 31 is used for being clamped into the clamping hole 331, so that the external force received by the adapter 33 is transmitted to the measuring head 20 through the connecting rod 10.

The locking hole 331 penetrates only one side of the adaptor 33. The card hole 331 includes a first hole 3311 and a second hole 3313 communicating with each other. The first hole 3311 is opened at an end of the adaptor 33 facing the connecting rod 10. The second holes 3313 have a larger diameter than the first holes 3311. The joint 31 includes a connecting portion 311 and a stopper portion 313. The connecting portion 311 is disposed on the connecting rod 10, and is used for being inserted into the first hole 3311 from one side of the adaptor 33. The stopping portion 313 is disposed on a side of the connecting portion 311 away from the connecting rod 10, and is used for being inserted into the second hole 3313 from a side of the adaptor 33.

It is understood that in other embodiments, the force applying member 30 may omit the adaptor member 33. The connector 31 is adapted to receive an external force.

The guide hole 233 is a square hole, and the guide portion 213 is a rectangular cylinder structure, so that the guide portion 213 cannot rotate in the guide hole 233, and the first clamping member 21 and the second clamping member 23 can relatively clamp the workpiece 200, it can be understood that in other embodiments, the shape of the guide hole 233 and the guide portion 213 may be other shapes as long as the guide hole 233 provides a guide for the movement of the guide portion 213.

When the protrusion 203 is subjected to a tensile test, a force F3 parallel to the first direction X is applied to the adaptor 33, so that the hole wall of the second hole 3313 abuts against the stopping portion 313 to pull the connecting rod 10 to move towards a side away from the measuring head 20, so that the measuring head 20 applies a tensile force parallel to the first direction X to the protrusion 203, and the protrusion 203 moves in a direction away from the body 201 along the first direction X, thereby implementing the tensile test.

When the shear test is performed on the protruding portion 203, a moment M1 is applied to one end of the adaptor 33 away from the joint 31, so that the clamping hole 331 clamps the joint 31 to rotate upward to drive the measuring head 20 to rotate downward, so that the measuring head 20 applies a shear force parallel to the second direction Y to the protruding portion 203, and the protruding portion 203 moves in the direction of separating from the body 201 along the second direction Y, thereby implementing the shear test.

Referring to fig. 4, in another embodiment, the protrusion 203' may also be located on the inner side of the body 201. The gauge head 20 extends into the body 201 and clamps the protrusion 203'. The shear test and the tensile test are respectively performed on the workpiece 200 by using the strength testing device 100 according to the method.

Referring to fig. 5 and 6, another strength testing apparatus 400 is provided for testing the bonding strength of the workpiece 200. The workpiece 200 is fixed to the body 201 by a fixing structure 401, and the projection 203 is exposed. The strength testing device 400 includes a connecting rod 40, a measuring head 50, and a force applying member 60. The measuring head 50 is disposed at one end of the connecting rod 40, and is used for abutting against the protruding portion 203. The measuring head 50 extends toward one side of the link 40. The measuring head 50 and the connecting rod 40 are a one-piece rod-shaped structure, but not limited thereto. The force applying member 60 is generally a rod-like structure. The force applying member 60 is disposed at the other end of the connecting rod 40 and is configured to receive an external force. The link 40 transmits the external force so that the gauge head 50 applies a force to the projection 203 to separate from the body 201.

The urging member 60 is provided with a slide hole 61. The link 40 is disposed in the slide hole 61. The included angle between the axis of the sliding hole 61 and the axis of the force application member 60 is an acute angle, so that the included angle between the connecting rod 40 and the force application member 60 is an acute angle. The measuring head 50 is located on one side of the connecting rod 40, which forms an acute angle with the force application member 60. The measuring head 50 is parallel to the force application member 60, but is not limited thereto. It is understood that in other embodiments, the measuring head 50 may also form an acute angle or an obtuse angle with the force applying member 60.

The included angle between the force application member 60 and the connecting rod 40 is an acute angle, so that the component force of the force F5 is increased. The measuring head 50 and the connecting rod 40 have smaller cross-sectional dimensions than the force application member 60 so as to enter the body 201 and abut against the convex portion 203.

It is understood that in other embodiments, the measuring head 50 may also clamp the protruding portion 203.

The strength testing device 400 further includes a guide 70. The guide comprises a support 71 and a closure 73. The supporting member 71 is provided with a sliding groove 711. The urging member 60 is provided in the slide groove 711, and is configured to slide in the slide groove 711. The closing member 73 is disposed on the supporting member 71 and is used for closing or exposing the sliding groove 711. The closure 73 includes: a first rotating member 731, a second rotating member 733, and a pressing member 735. The first rotating part 731 is disposed at one end of the supporting part 71 and is configured to rotate relative to the supporting part 71. The second rotating part 733 is disposed at the other end of the supporting part 71 and is configured to rotate relative to the supporting part 71. The pressing member 735 is disposed on the second rotating member 733 and is configured to rotate relative to the supporting member 71. The second rotating part 733 is configured to drive the pressing part 735 to rotate to a side of the first rotating part 731 departing from the supporting part 71, and the pressing part 735 rotates along the second rotating part 733 and is configured to press and fix the second rotating part 733.

One end of the first rotating member 731 is disposed on the supporting member 71, and the other end thereof is provided with an escape groove 7311. The first rotating member 731 rotates toward the second rotating member 733 with respect to the supporting member 71, and serves to close the sliding groove 711. The second rotating member 733 rotates relative to the supporting member 71 toward the first rotating member 731 and enters the avoiding groove 7311, which moves the pressing member 735 to a side of the first rotating member 731 away from the sliding groove 711. A groove 7313 is disposed on a side of the first rotating member 731 facing away from the sliding groove 711. The pressing member 735 is provided with a pressing portion 7351. The pressing portion 7351 is used to be inserted into the groove 7313, so that the pressing member 735 and the first rotating member 731 are fixed relatively.

When the strength test is performed on the work 200, the force F5 is applied to the force applying member 60 in the second direction Y. The force applying member 60 slides downward along the sliding groove 711 and presses the connecting rod 40, so that the force F5 is transmitted to the measuring head 50 through the connecting rod 40, the measuring head 50 abuts against the protruding portion 203, a shearing force parallel to the second direction Y is applied to the protruding portion 203, the protruding portion 203 moves in the direction of separating from the body 201 along the second direction Y, and a shearing force test is realized.

It is understood that in other embodiments, the guide member 70 may be omitted.

The connecting rod 40 is provided with a boss 41 projecting in the radial direction. The boss 41 is used for abutting against the force application member 60, so that the force application member 69 and the measuring head 50 are kept at a fixed distance.

In addition, other changes may be made by those skilled in the art without departing from the spirit of the invention, and it is intended that all such changes be considered within the scope of the invention.

Claims

1. An intensity testing device, comprising:

a connecting rod;

2. The strength testing apparatus of claim 1, wherein the probe comprises:

a first clamping member;

a second clamping member;

3. The strength testing apparatus of claim 2, wherein the probe further comprises:

an elastic member;

the second clamping piece is provided with a guide hole;

4. The strength testing apparatus of claim 2, wherein:

the connecting rod is arranged on the first clamping piece or the second clamping piece and extends to one side away from the connecting piece;

the force application member further includes:

the joint is arranged on one side, deviating from the measuring head, of the connecting rod and is used for being clamped into the clamping hole.

5. The strength testing apparatus of claim 4, wherein:

the card hole link up one side of adaptor, and include:

the first hole is formed in one end, facing the connecting rod, of the adapter;

the joint includes:

6. The strength testing apparatus of claim 1, wherein:

the force application part is provided with a sliding hole;

7. The strength testing apparatus of claim 6, wherein:

the measuring head extends towards one side of the connecting rod, wherein the included angle between the connecting rod and the force application part is an acute angle.

8. The strength testing apparatus of claim 7, wherein:

the measuring head is parallel to the force application part.

9. The strength testing apparatus of claim 7, further comprising:

a guide, comprising:

the supporting piece is provided with a sliding chute; the force application piece is arranged on the sliding groove and is used for sliding in the sliding groove;

10. The strength testing apparatus of claim 9, wherein the closure comprises: