CN110520708A

CN110520708A - Test equipment

Info

Publication number: CN110520708A
Application number: CN201880014666.9A
Authority: CN
Inventors: 张顺; 钟志勇
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2018-03-29
Filing date: 2018-09-14
Publication date: 2019-11-29
Also published as: CN208254743U; WO2019184267A1

Abstract

A kind of test equipment, for testing spring, including feeding assembly (200), for installing spring to be tested；Pressing assembly (100), the force side of pressing assembly (100) act on feeding assembly (200), to press the spring in feeding assembly (200)；The power part (300) being electrically connected with pressing assembly (100) is moved back and forth for controlling pressing assembly (100)；By power part (300), electrically control pressing assembly (100) moves back and forth pressing or is located away from feeding assembly (200), with the spring in test feed component (200).The test equipment enables to that spring compression is consistent and spring force decaying is consistent, and testing efficiency is high, easy to operate, and can guarantee the accuracy of test data.

Description

Test equipment

Technical Field

The embodiment of the invention relates to the field of spring test equipment, in particular to test equipment.

Background

With the continuous improvement of unmanned aerial vehicle technical level, the spring also more and more frequently is applied to various miniaturized unmanned aerial vehicles. Because the structure of the spring that uses on the unmanned aerial vehicle is little and quantity is many, lead to the spring supplied materials can't test and supervision effectively.

At present, the spring can be tested only in a mode of manually pressing the spring, so that the spring is not pressed uniformly, the attenuation of the elastic force of the spring is not uniform, and the service life of the spring is difficult to judge whether the service life meets the standard under the unified standard. And the test efficiency of adopting this kind of test mode is low, the action is single, causes the number of times easily to miss and examines.

Disclosure of Invention

The technical scheme disclosed by the embodiment of the invention can at least solve the following technical problems: at present, the spring can only be tested in a mode of manually pressing the spring, so that the spring is inconsistent in compression and inconsistent in attenuation of the spring elasticity.

One or more embodiments of the present invention disclose a test apparatus for testing a spring, including:

the feeding assembly is used for installing a spring to be tested;

the force application end of the pressing component acts on the feeding component to press the spring in the feeding component;

the power part is electrically connected with the pressing component and is used for controlling the pressing component to reciprocate;

the power part electrically controls the pressing component to reciprocate to press or separate from the feeding component so as to test the spring in the feeding component.

In one or more embodiments of the present invention, the pressing assembly includes a pressing plate, and a first pressing cylinder and a second pressing cylinder electrically connected to the power part;

the first lower air cylinder is fixedly arranged on the pressing plate, and the transmission end of the first lower air cylinder is in contact with the feeding assembly and is used for pressing or separating the spring in the feeding assembly;

the pressing plate is fixed at the transmission end of the second pressing cylinder, and the pressing plate is driven to move through the transmission end of the second pressing cylinder so as to adjust the positions of the pressing plate and the first pressing cylinder.

In one or more embodiments of the invention, the compression assembly further comprises a housing for supporting the second down-pressure cylinder;

the shell is provided with a pair of guide rail pairs, the guide rail pairs are provided with movable sliding blocks, and the pressing plates are fixed on the sliding blocks and can reciprocate along the guide rail pairs.

In one or more embodiments of the present invention, the pressing assembly further includes a buffer spring for buffering the movement of the pressing plate, one end of the buffer spring is fixed on the housing, and the other end of the buffer spring is fixed on the pressing plate.

In one or more embodiments of the present invention, a buffer portion for protecting the driving end of the first down cylinder is further included, and the buffer portion is in contact with the driving end of the first down cylinder.

In one or more embodiments of the invention, the feed assembly comprises:

the spring guide pin is arranged between the cover plate and the support plate, and a spring is sleeved on the spring guide pin;

the positions of the carrier plate and the pressing component are fixed with each other, one end of the spring guide pin is installed on the carrier plate, the other end of the spring guide pin penetrates through the cover plate, and the cover plate moves towards or away from the carrier plate along the spring guide pin under the action of the pressing component.

In one or more embodiments of the present invention, the feeding assembly further includes a linear slide rail, one end of the linear slide rail is fixed on the carrier plate, and the other end of the linear slide rail passes through the cover plate, and the cover plate reciprocates along the linear slide rail.

In one or more embodiments of the present invention, the feeding assembly further includes a limiting screw, one end of the limiting screw is fixed on the carrier plate, and the other end of the limiting screw penetrates through the cover plate and is provided with a limiting portion at an end portion thereof, so as to limit the cover plate.

In one or more embodiments of the invention, the feeder assembly further comprises a receiving plate, wherein the feeder assembly is fixed on the receiving plate;

the bearing plate is also provided with a positioning pin for positioning the position of the feeding assembly.

In one or more embodiments of the invention, the feed assembly further comprises a stationary portion;

and the support plate of the feeding assembly is arranged on the bearing plate through the fixing part.

Compared with the prior art, the embodiment of the invention has the beneficial effects that:

in one or more possible embodiments of the invention, by arranging the pressing component and utilizing the mechanical motion characteristics of the cylinder in the pressing component and matching the action of the power part, a human is simulated to manually apply constant micro-distance reciprocating motion pressure to the spring so as to enable the spring to be adjustably pressed repeatedly in a small range, thereby testing the elasticity limit of the spring, testing the service life limit of the elasticity of the spring and judging whether the spring is aged or not; in this embodiment, the support plate in the feeding assembly is arranged to be a detachable structure, and the sizes of the spring positioning pins and the spring via holes on the support plate are changed rapidly, so that the feeding assembly can be compatible with different types of springs. The technical scheme provided by the embodiment of the invention can keep the compression of the spring consistent and the attenuation of the elastic force of the spring consistent, has high test efficiency and simple operation, and can ensure the accuracy of test data.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used 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 invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an exploded view of a test apparatus according to an embodiment of the present invention;

FIG. 2 is a front view of a compression assembly according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a compression assembly in accordance with an embodiment of the present invention;

FIG. 4 is an exploded view of a feed assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view illustrating the installation of the cover plate, the carrier plate and the spring guide pin according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of the accommodating portion according to the embodiment of the invention.

100	Press fit assembly
110	First down-pressure cylinder
111	A first regulating part
120	Second down-pressure cylinder
121	Second regulating part
130	Pressing plate

131	Cylinder through hole
140	Shell body
141	Opening of the container
150	Guide rail pair
160	Buffer spring
170	Mounting seat
200	Feeding assembly
210	Cover plate
211	Guide hole
212	Mounting hole of sliding rail
213	Limiting hole
214	Groove
220	Support plate
221	Mounting hole
222	Screw hole
230	Spring guide pin
240	Linear sliding rail
241	Supporting spring
242	Supporting spring guide pin
250	Limit screw
260	Limiting part
270	Fixing part
280	Positioning part
290	Hand-held part
300	Power unit

400	Buffer part
500	Bearing plate
510	Locating pin
600	Accommodating part
610	Display assembly
620	Push button assembly

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a 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. The terms "first", "second", and the like in the claims, the description, and the drawings of the specification of the present application are used for distinguishing between different objects and not for describing a particular order. The test equipment involved in the detailed description is only a preferred embodiment and is not intended to be all possible embodiments of the present invention.

The test equipment mainly tests the springs on the unmanned aerial vehicle, and tests the elasticity limit of the springs by repeatedly pressing the springs for the rated times until the springs break, so as to test the service life limit of the elasticity of the springs and judge whether the springs are aged. Moreover, the test equipment that this embodiment provided can be compatible different specification and dimension's spring, only needs to be changed set up spring locating pin and spring via hole size on the support plate that is arranged in installing the feeding subassembly of spring among the test equipment to switch the spring on the different model unmanned aerial vehicle and test, of course, a plurality of springs can be installed simultaneously to test these springs simultaneously. In some embodiments, the test equipment can also test the springs of other equipment, and is not limited to the test of the springs on the unmanned aerial vehicle.

Referring to fig. 1, a schematic structural diagram of a testing apparatus according to an embodiment of the present invention is shown, and the technical content of the claims is described. The testing device comprises a pressing component 100, a feeding component 200 and a power part 300; the feeding assembly 200 is used for installing the spring to be tested, and the force applying end of the pressing assembly 100 acts on the feeding assembly 200 to press the spring in the feeding assembly 200. The power portion 300 is electrically connected to the pressing assembly 100, and the power portion 300 is used for controlling the pressing assembly 100 to reciprocate. In this embodiment, the testing device electrically controls the pressing assembly 100 to reciprocate to press on or separate from the feeding assembly 200 through the power portion 300, so as to test the spring in the feeding assembly 200. In this embodiment, the power unit 300 is a component for controlling, such as an electromagnetic valve, and controls the movement of the first and second air cylinders 110 and 120 by controlling the on/off of the electromagnetic valve; specifically, the testing device sets condition parameters including, but not limited to, a running distance, time, times, and the like of the pressing component 100, so that the pressing component 100 repeatedly presses the spring installed in the feeding component 200 under a certain premise of pressing force, pressing distance, and pressing time until the spring is broken, so as to test the elastic limit of the spring. In practical application, the testing equipment only needs to disassemble the spring on the unmanned aerial vehicle and place the spring in the feeding assembly 200, so that the use is convenient; moreover, be provided with a plurality of spring test positions on the feeding subassembly 200, applicable in a plurality of springs test simultaneously to through quick replacement feeding subassembly 200 can be compatible different specification and dimension's spring, thereby improved the efficiency of software testing of spring.

In one or more possible embodiments of the present invention, referring to fig. 2 and 3, the pressing assembly 100 includes a first pressing cylinder 110, a second pressing cylinder 120, and a pressing plate 130, wherein the first pressing cylinder 110 and the second pressing cylinder 120 are electrically connected to the power portion 300. The first lower air cylinder 110 is fixedly installed on the pressing plate 130, and a transmission end of the first lower air cylinder 110 is in contact with the feeding assembly 200, and is used for pressing or separating a spring in the feeding assembly 200; the pressing plate 130 is fixed at the transmission end of the second pressing cylinder 120, and the pressing plate 130 is driven by the transmission end of the second pressing cylinder 120 to move, so as to adjust the positions of the pressing plate 130 and the first pressing cylinder 110, and adjust the position between the first pressing cylinder 110 and the feeding assembly 200, i.e., adjust the position between the pressing plate 130 and the feeding assembly 200. In this embodiment, the pressing assembly 100 further includes a housing 140 for supporting the second pressing cylinder 120, and the second pressing cylinder 120 is disposed inside the housing 140. In the embodiment of the present invention, the housing 140 is further provided with an opening 141, one end of the pressing plate 130 is fixed behind the driving end of the second air cylinder 120, and the other end of the pressing plate extends from the opening 141 to the outside of the housing 140, and the first air cylinder 110 is fixedly mounted on the pressing plate 130, so that the linkage between the first air cylinder 110 and the second air cylinder 120 is realized.

In one or more possible embodiments of the present invention, in order to avoid the shaking of the pressing plate 130 during the movement process, the present embodiment provides a pair of guide rail pairs 150 on the housing 140, the guide rail pairs 150 are provided with movable sliding blocks, and the pressing plate 130 is fixed on the sliding blocks and can reciprocate along the pair of guide rail pairs 150. The pair of guide rail pairs 150 are respectively fixed on the housing 140 and symmetrically disposed at two sides of the opening 141, and under the combined action of the pair of guide rail pairs 150 and the slider, the movement of the pressing plate 130 is more stable, and the vibration of the pressing plate 130 in the movement process is reduced. Of course, it should be understood by those skilled in the art that the prevention of the shake during the movement of the pressing plate 130 is not limited to the embodiment that the pressing plate 130 is fixed on the pair of guide rail pairs 150, and other driving devices may be installed on the housing 140, such as: the technical effects of the present embodiment can also be achieved by a conveying air rail, a conveying belt, etc., and mounting the pressing plate 130 on the conveying air rail or the conveying belt.

In an embodiment of the present invention, the pressing plate 130 is provided with a cylinder through hole 131, when the first hold-down cylinder 110 is installed on the pressing plate 130, the driving end of the first hold-down cylinder 110 is disposed in a region corresponding to the cylinder through hole 131, and the first hold-down cylinder 110 drives the driving end of the first hold-down cylinder 110 to reciprocate in the cylinder through hole 131, so as to repeatedly press and bond the spring installed in the feeding assembly 200, thereby testing the elasticity of the spring. Of course, the arrangement of the cylinder through hole 131 in this embodiment is only for the convenience of repeatedly pressing and connecting the driving end of the first air cylinder 110 to the spring installed in the feeding assembly 200, and the structure of the pressing plate 130 is not limited, and it should be understood by those skilled in the art that in other embodiments of the present invention, the technical effects of this embodiment can also be achieved by only applying the movement of the driving end of the first air cylinder 110 to the feeding assembly 200 and pressing and connecting the spring of the feeding assembly 200, for example, arranging the driving end of the first air cylinder 110 outside the pressing plate 130.

Of course, in one or more possible embodiments of the present invention, the first air cylinder 110 is provided with a first adjusting portion 111 for adjusting the stroke of the first air cylinder 110, and the second air cylinder 120 is provided with a second adjusting portion 121 for adjusting the stroke of the second air cylinder 120. The first adjusting portion 111 is fixed at a cylinder rod end of the first down-pressure cylinder 110, the second adjusting portion 121 is fixed at a cylinder rod end of the second down-pressure cylinder 120, and in this embodiment, both the first adjusting portion 111 and the second adjusting portion 121 are adjusting knobs. In the actual use process, the pressing distance of the transmission end of the first pressing cylinder 110 can be adjusted only by adjusting the position of the first adjusting part 111 at the end part of the cylinder rod so as to adjust the stroke of the first pressing cylinder 110; similarly, by adjusting the position of the second adjusting portion 121 at the end of the cylinder rod, so as to adjust the stroke of the second air cylinder 120, the pressing distance of the driving end of the second air cylinder 120 can be adjusted, so as to adjust the position of the pressing plate 130 or the first air cylinder 110. Therefore, in the present embodiment, by using the scheme that the first adjusting part 111 and the second adjusting part 121 respectively adjust the strokes of the first down-pressure cylinder 110 and the second down-pressure cylinder 120, the constant macro reciprocating pressure applied by the human hand to the spring is simulated, so that the spring can be adjustably and repeatedly pressed in a small range, and the effect of uniformly pressing the spring is achieved.

In one or more possible embodiments of the present invention, when the driving end of the first down-pressure cylinder 110 drives the pressing plate 130 to move, the first down-pressure cylinder 110 moves at a high speed and at an excessively frequent frequency, and the driving end of the first down-pressure cylinder 110 is in contact with the pressing plate 130. Therefore, in this embodiment, the pressing assembly 100 further includes a buffer spring 160 for buffering the movement of the pressing plate 130, one end of the buffer spring 160 is fixed on the housing 140, and the other end thereof is fixed on the pressing plate 130. Specifically, the press-fit assembly 100 is further provided with an installation seat 170 for installing the buffer spring 160, the installation seat 170 is fixed on the housing 140 and located on the upper side of the opening 141, the installation seat 170 and one end of the buffer spring 160, and the other end of the buffer spring 160 is fixed on the pressing plate 130, and the movement of the pressing plate 130 can be slowed down by the action of the buffer spring 160, so that the pressing plate 130 plays a role of buffering. Of course, it should be understood by those skilled in the art that the structure for mounting the buffer spring 160 is not limited to the mounting seat 170 in the embodiment, and other fixing structures, such as a hook structure, may be provided according to specific requirements.

In one or more possible embodiments of the present invention, the driving end of the first lower air cylinder 110 is an air cylinder pressing head, and the air cylinder pressing head can repeatedly press and press a spring installed in the feeding assembly 200 under the action of the first lower air cylinder 110. Since the driving end of the first down cylinder 110 is a cylinder ram and the cylinder ram is a precision element, in order to protect the driving end of the first down cylinder 110, i.e., the cylinder ram in the first down cylinder 110, the test apparatus further includes a buffer part 400, and the buffer part 400 is in contact with the driving end of the first down cylinder 110. And in this embodiment the central zone on the apron 210 still is provided with recess 214, recess 214 is used for placing buffer 400 to through the cylinder pressure head with buffer 400's contact, thereby avoid the cylinder pressure head with apron 210 makes because of direct contact the cylinder pressure head collides with, leads to the damage of cylinder pressure head, reduces the life of cylinder pressure head. In some embodiments, the buffer portion 400 is made of, but not limited to, rubber, silicon gel, etc., and can reduce direct collision between the cylinder ram and the buffer portion 400 and friction between the cylinder ram and the buffer portion, so as to increase the service life of the cylinder ram, in this embodiment, the buffer portion 400 is made of buffer acrylic rubber. Of course, the projected shape of the recess 214 on the cover plate 210 is the same as the projected shape of the buffer part 400 on the cover plate 210, so that the buffer part 400 can be completely received in the recess 214. In addition, in order to make the stress on the cover plate 210 uniform, the position of the groove 214 is located at the center of gravity of the cover plate 210, i.e. at the center of the cover plate 210, and the guide hole 211 is arranged around the center of the cover plate 210, so as to prevent the cylinder ram from colliding with the spring guide pin 230 penetrating through the guide hole 211. It should be understood by those skilled in the art that the buffer portion 400 is disposed on the cover plate 210, and may be disposed on other components, for example, the area where the cylinder head of the first down-pressure cylinder 110 contacts the cover plate 210, and the technical effects of the present embodiment may also be achieved.

In one or more possible embodiments of the present invention, referring to fig. 4 and 5, the feeding assembly 200 includes a cover plate 210, a carrier plate 220 disposed on one side of the cover plate 210, and a spring guide pin 230 disposed between the cover plate 210 and the carrier plate 220, the positions of the carrier plate 220 and the press-fit assembly 100 are fixed to each other, one end of the spring guide pin 230 is mounted on the carrier plate 220, the other end passes through the cover plate 210, and the cover plate 210 moves along the spring guide pin 230 toward or away from the carrier plate 220 by the press-fit assembly 100. The carrier plate 220 is disposed on the opposite side of the driving end of the first down-pressure cylinder of the press-fit assembly 100, and no relative movement occurs between the carrier plate 220 and the press-fit assembly 100. In this embodiment, the cover plate 210 is provided with a plurality of guide holes 211 for guiding the spring guide pins 230, the carrier plate 220 is provided with a plurality of mounting holes 221 for mounting the spring guide pins 230, the number of the guide holes 211 is the same as that of the mounting holes 221, and the positions of the guide holes 211 correspond to the positions of the mounting holes 221 one by one; after the spring guide pin 230 is sleeved with a spring, the cover plate 210 is placed at the upper end of the spring guide pin 230, and the pressing component 100 pushes the cover plate 210 to move toward the carrier plate 220, so that the upper end of the spring guide pin 230 passes through the guide hole 211, so that the cover plate 210 presses the upper end of the spring, and this is repeated, so that the cover plate 210 repeatedly presses the spring, and the elasticity of the spring is tested. Of course, in one or more possible embodiments of the present invention, the number of the guide holes 211 or the number of the mounting holes 221 are not limited in this embodiment, and it should be understood by those skilled in the art that, in the actual application process, the number of the guide holes 211 or the number of the mounting holes 221 may be set according to specific testing requirements, or the guide holes 211 or the mounting holes 221 may be selected according to the number of the springs to be tested; for the positions of the guide hole 211 and the mounting hole 221, it is only necessary to ensure that the guide hole 211 and the mounting hole 221 are correspondingly disposed under the action of the spring guide pin 230, and the specific position setting is not limited in this embodiment. In this embodiment, the size of the spring guide pin 230 is slightly smaller than the size of the spring through hole installed on the spring guide pin 230, so that the spring can be quickly and accurately installed in the spring guide pin 230. Of course, it should be understood by those skilled in the art that the spring guide pin 230 and the carrier plate 220 are detachably mounted, and when springs of different types need to be replaced, the spring guide pin 230 only needs to be replaced to adapt to the size of the spring through hole, so that the efficiency of spring testing is improved.

In one or more possible embodiments of the present invention, the feeding assembly 200 further includes a linear slide rail 240 for supporting and guiding the cover plate 210 to move back and forth, one end of the linear slide rail 240 is fixed on the carrier plate 220, and the other end passes through the cover plate 210, and the cover plate 210 can move back and forth along the linear slide rail 240 under the action of the pressing assembly 100. Specifically, the cover plate 210 is further provided with a slide rail mounting hole 212 for guiding the linear slide rail 240, the upper end of the linear slide rail 240 passes through the slide rail mounting hole 212, and the lower end of the linear slide rail 240 is fixed on the carrier plate 220; in this embodiment, a support spring 241 for supporting the linear slide rail 240 and a support spring guide pin 242 for guiding the support spring 241 are sleeved inside the linear slide rail 240 at a time. In some embodiments, since the cover plate 210 is a square plate, in order to make the movement of the cover plate 210 on the linear slide rail 240 more stable, the number of the slide rail mounting holes 212 is four, and the number of the slide rail mounting holes is four at four corners of the square cover plate 210, that is, the number of the linear slide rail 240 is four in this embodiment, and the number of the support springs 241 and the number of the support spring guide pins 242 are four. Of course, it should be understood by those skilled in the art that the number of the linear slides 240 in the embodiment is not limited to four, but is only a preferred embodiment of the present invention, and in other embodiments, the linear slides 240 may be provided in other numbers, such as: eight, etc.

In one or more possible embodiments of the present invention, the feeding assembly 200 further includes a limiting screw 250, one end of the limiting screw 250 is fixed on the carrier plate 220, and the other end of the limiting screw passes through the cover plate 210 and is provided with a limiting portion 260 at an end portion thereof to limit the cover plate 210. Specifically, an external thread is arranged at one end of the carrier plate 220, where the limit screw 250 is fixed, and the cover plate 210 is provided with a limit hole 213 for guiding the limit screw 250; after the position of the cover plate 210 is determined, the limiting screw 250 passes through the limiting hole 213, and the end of the limiting screw 250 with the external thread is screwed into the carrier plate 220 for fixing. Of course, the cover plate 210 can reciprocate along the middle region of the limiting screw 250 under the action of the pressing assembly 100, when the pressing assembly 100 returns to the original position, the cover plate 210 returns to the original position under the action of the tested spring and the linear slide 240 and the limiting screw 250, and the limiting portion 260 limits the original position of the cover plate 210. In this embodiment, the cover plate 210 is respectively provided with two limiting holes 213, the two limiting holes 213 are respectively disposed on two sides of the cover plate 210, and the number of the limiting screws 250 is two, but the cover plate 210 can be limited by providing two limiting screws 250 in this embodiment; however, it should be understood by those skilled in the art that in other embodiments, the number of the set limiting screws 250 is not limited to two, and may be specifically set according to the requirement, such as: three, four, etc., which are not limited in this embodiment; similarly, the position of the limit screw 250 is not limited in this embodiment.

In one or more possible embodiments of the present invention, the testing apparatus further includes a receiving plate 500, the feeding component 200 is fixed on the receiving plate 500, and the receiving plate 500 is further provided with a positioning pin 510 for positioning the feeding component 200; in this embodiment, the pressing assembly 100 and the power portion 300 are fixed in the receiving plate 500. The feeding assembly 200 further includes a fixing portion 270, and after the feeding assembly 200 is positioned by the positioning pin 510, the carrier plate 220 of the feeding assembly 200 is mounted on the receiving plate 500 by the fixing portion 270. Specifically, the carrier 220 is provided with a screw hole 222 for installing the fixing portion 270, the fixing portion 270 passes through the screw hole 222 and fixes the carrier 220 on the press-fit component 100, and in this embodiment, the fixing portion 270 is a screw structure, and the carrier 220 can be detached from the press-fit component 100 by screwing the screw structure, so as to replace the carrier 220 with other specifications. In order to make the connection between the carrier 220 and the pressing assembly 100 more secure, the number of the screw structures is a pair, and the pair of screw structures are respectively disposed at the opposite corners of the carrier 220. Of course, those skilled in the art should understand that in the other embodiments, the number of the screw structures is not limited to two, and may be specifically set according to the requirement, such as: three, four, etc., which are not limited in this embodiment. In some embodiments, the fixing portion 270 is not limited to a screw structure, and other structures may be provided according to specific test requirements, such as: a snap structure, etc. therefore, in other embodiments of the present invention, if the fixing portion 270 includes other structures, the technical effect of the present embodiment is achieved, and it should be considered as a simple modification of the fixing portion 270, and the scope of the present invention is also within the scope of the present invention.

In this embodiment, the feeding assembly 200 further includes a positioning portion 280, the positioning portion 280 is a carrier positioning guide pin, the carrier positioning guide pin is embedded on the lower end surface of the carrier 220, the position of the carrier positioning guide pin is arranged corresponding to the position of the positioning pin 510, and the position of the carrier 220 on the press-fit assembly 100 can be positioned, when the carrier is replaced, the carrier 220 can be quickly positioned to the position of the press-fit assembly 100 by matching the carrier positioning guide pin and the positioning pin 510, so that the carrier 220 is located at the press-fit position of the press-fit assembly 100, and the stroke and the position of the first down-pressure cylinder 110 and the second down-pressure cylinder 120 do not need to be adjusted again, thereby improving the testing efficiency. In some embodiments, the feeding assembly 200 further comprises a carrying portion 290 for facilitating carrying the carrier plate 220, the carrying portion 290 being secured to the carrier plate 220; the portable part 290 is two handle structures, and the two handle structures are fixed on two sides of the carrier plate 220, so that the carrier plate 220 can be conveniently carried by a hand, and the speed of replacing the carrier plate 220 can be increased.

In one or more possible embodiments of the present invention, referring to fig. 6, the testing apparatus further includes a receiving portion 600 for receiving the power portion 300. The accommodating part 600 is of a box structure, the power part 300 is arranged in the box structure, a display component 610 used for displaying set parameters and a button component 620 used for controlling the pressing component 100 to act are arranged on the accommodating part 600, the distance, time, frequency and the like of the operation of the pressing component 100 can be manually set on the display component 610, and therefore the display component is used on the pressing component 100, the pressing component 100 is enabled to repeatedly press and install the spring in the feeding component 200 on the premise of certain pressing force, pressing distance and pressing time until the spring is broken, and the elastic limit of the spring is tested. Of course, the button assembly 620 is disposed on the outer surface of the accommodating portion 600, and includes, but is not limited to, a start button for controlling the start of the pressing assembly 100, a stop button for controlling the stop of the pressing assembly 100, an emergency stop button for controlling the emergency stop of the pressing assembly 100, and the like, which are located on both sides of the display assembly 610, and therefore, in this embodiment, the movement of the pressing assembly 100, i.e., the movement of the first and second pressing cylinders 110 and 120, may also be controlled according to the button assembly 620.

In one or more possible embodiments of the present invention, by setting the pressing component 100, and using the mechanical movement characteristics of the cylinder in the pressing component 100, in cooperation with the action of the power part 300, a human is simulated to manually apply a constant macro reciprocating pressure to the spring, so that the spring can be adjustably pressed repeatedly within a small range, and thus the elastic force limit of the spring is tested, and the life limit of the elastic force of the spring is tested, so as to determine whether the spring is aged; in this embodiment, the carrier plate of the feeding assembly 200 is configured to be detachable, and the sizes of the spring positioning pins and the spring via holes on the carrier plate are changed rapidly, so that the feeding assembly 200 can be compatible with different types of springs. The technical scheme provided by the embodiment of the invention can keep the compression of the spring consistent and the attenuation of the elastic force of the spring consistent, has high test efficiency and simple operation, and can ensure the accuracy of test data.

In this embodiment, it should be understood by those skilled in the art that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including other elements not expressly listed, in addition to those listed; the directional terms front, rear, upper and lower, etc. are used to define the structures in the drawings and the positions of the structures relative to each other, and are used for clarity and convenience of the technical solutions. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all the possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

A test apparatus for testing a spring, comprising:

the feeding assembly is used for installing a spring to be tested;

the force application end of the pressing component acts on the feeding component to press the spring in the feeding component;

the power part is electrically connected with the pressing component and is used for controlling the pressing component to reciprocate;

the power part electrically controls the pressing component to reciprocate to press or separate from the feeding component so as to test the spring in the feeding component.
The test apparatus of claim 1, wherein: the pressing component comprises a pressing plate, a first pressing cylinder and a second pressing cylinder which are electrically connected with the power part;

the first lower air cylinder is fixedly arranged on the pressing plate, and the transmission end of the first lower air cylinder is in contact with the feeding assembly and is used for pressing or separating the spring in the feeding assembly;

the pressing plate is fixed at the transmission end of the second pressing cylinder, and the pressing plate is driven to move through the transmission end of the second pressing cylinder so as to adjust the positions of the pressing plate and the first pressing cylinder.
The test apparatus of claim 2, wherein: the pressing assembly further comprises a shell for supporting the second pressing cylinder;

the shell is provided with a pair of guide rail pairs, the guide rail pairs are provided with movable sliding blocks, and the pressing plates are fixed on the sliding blocks and can reciprocate along the guide rail pairs.
The test apparatus of claim 3, wherein: the pressing assembly further comprises a buffer spring for buffering the movement of the pressing plate, one end of the buffer spring is fixed on the shell, and the other end of the buffer spring is fixed on the pressing plate.
The test apparatus of claim 2, wherein: the buffer part is used for protecting the transmission end of the first downward air cylinder and is in contact with the transmission end of the first downward air cylinder.
The testing apparatus of claim 1, wherein the feeding assembly comprises:

the spring guide pin is arranged between the cover plate and the support plate, and a spring is sleeved on the spring guide pin;

the positions of the carrier plate and the pressing component are fixed with each other, one end of the spring guide pin is installed on the carrier plate, the other end of the spring guide pin penetrates through the cover plate, and the cover plate moves towards or away from the carrier plate along the spring guide pin under the action of the pressing component.
The test apparatus of claim 6, wherein the feeding assembly further comprises a linear slide, one end of the linear slide is fixed on the carrier plate, and the other end of the linear slide passes through the cover plate, and the cover plate reciprocates along the linear slide.
The testing apparatus of claim 7, wherein the feeding assembly further comprises a limiting screw, one end of the limiting screw is fixed on the carrier plate, the other end of the limiting screw penetrates through the cover plate, and a limiting portion is arranged at the end of the limiting screw to limit the cover plate.
The test apparatus of claim 6, further comprising a take-up plate, the feeding assembly secured to the take-up plate;

the bearing plate is also provided with a positioning pin for positioning the position of the feeding assembly.
The testing apparatus of claim 9, wherein the feeding assembly further comprises a fixture;

and the support plate of the feeding assembly is arranged on the bearing plate through the fixing part.