CN216524762U

CN216524762U - Spring life testing device

Info

Publication number: CN216524762U
Application number: CN202123264560.2U
Authority: CN
Inventors: 王凯; 王勋; 肖龙君; 晏彧
Original assignee: Wuhan Kesmart Intelligent Control Equipment Co ltd
Current assignee: Wuhan Kesmart Intelligent Control Equipment Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-05-13
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a spring service life testing device which comprises a sleeve, a fixed seat and a reciprocating telescoping mechanism, wherein the sleeve is fixed on the fixed seat, one end of the sleeve is provided with an opening for a tested spring to be arranged in the sleeve, the other end of the sleeve is provided with a sealing part, the reciprocating telescoping mechanism is provided with a telescopic rod capable of stretching into the sleeve, when the reciprocating telescoping mechanism telescopes, the telescopic rod can repeatedly compress and release the tested spring in the sleeve, the spring service life testing device also comprises a controller and a counter, the controller controls the reciprocating motion of the reciprocating telescoping mechanism, and the counter counts the reciprocating motion times of the reciprocating telescoping mechanism. The spring service life test device has the advantages that after a tested spring is arranged in the sleeve, the service life test of the spring can be carried out by opening the reciprocating telescoping mechanism, the sleeve can guide the compression and rebound of the spring, and meanwhile, the sleeve can prevent the broken spring from popping out to hurt people when the spring is broken in the spring test process; the structure is simple, and the operation is convenient; the telescopic link stretches into the adjustable maximum length in the sleeve, can realize the test to the spring of different length, and the suitability is good.

Description

Spring life testing device

Technical Field

The utility model belongs to the field of spring performance testing, and particularly relates to a spring life testing device.

Background

The spring is a mechanical part which works by utilizing elasticity, is an important element in an industrial system, has large usage amount, is various in types and is widely applied. According to different use scenes, the spring has various functions, such as measurement, reset, driving, buffering, sounding, pressing and the like. In a door closer product, a spring is one of important parts, and the quality of the spring is directly related to the quality of the door closer.

The performance of the spring is mainly reflected by the bearing capacity and the fatigue life of the spring. In the product design process, the bearing capacity and the fatigue life of the spring can be obtained through theoretical calculation, the bearing capacity can be compared with a theoretical result through simple tests, the difference between the bearing capacity and the theoretical result is usually not large, the fatigue life influence factors are more, uncontrollable factors are more, the theoretical calculation result cannot be directly applied to an actual scene, and even a spring manufacturer cannot completely ensure that the service life of the spring is consistent with the theoretical result. Therefore, in the product design verification stage, the fatigue life of the spring needs to be tested and verified, and the fatigue life is used as a judgment basis. The existing common spring service life testing device has the problems of lack of an effective safety protection structure, poor automation degree and the like, and counting components.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a spring service life testing device, aiming at overcoming the defects in the prior art.

The technical scheme for solving the technical problems is as follows: the utility model provides a spring life testing arrangement, its includes sleeve, fixing base and reciprocal telescopic machanism, the sleeve is fixed in on the fixing base, sleeve one end opening is packed into for the spring under test in the sleeve, the sleeve other end is equipped with the closure, reciprocal telescopic machanism has the scalable telescopic link in the sleeve, during the flexible action of reciprocal telescopic machanism, the telescopic link can compress repeatedly and release the spring under test in the sleeve still includes controller and counter, controller control reciprocal telescopic machanism reciprocates, the counter statistics reciprocal number of times of moving of reciprocal telescopic machanism.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, still include the bottom plate that the level set up, the fixing base has two and all controls to separate to be fixed in the upper surface of bottom plate, the sleeve level set up and control both ends correspond and two fixing base fixed connection, reciprocal telescopic machanism is fixed in the bottom plate left side just reciprocal telescopic machanism's flexible end through the installation piece with the left end fixed connection of telescopic link, the right-hand member warp of telescopic link sleeve left end opening stretches into in the sleeve.

The adoption of the further scheme has the beneficial effects that the bottom plate is convenient for fixing and mounting each part, and simultaneously ensures that the test operation is relatively stable; the front and the rear parts of the sleeve are fixed by the two fixing seats, so that the fixing effect is good; the telescopic rod with different length can be conveniently replaced and adjusted by connecting the mounting block with the telescopic rod.

Furthermore, the right end of the sleeve is detachably connected with the closing piece, the closing piece is a bolt or a bolt, and the right end of the sleeve is provided with a jack matched with the bolt or a screw hole matched with the bolt.

Adopt above-mentioned further scheme's beneficial effect be, the closure member of bolt or bolt form, simple structure and easy dismouting, processing low in manufacturing cost simultaneously.

Further, the front side and the rear side of the fixing seat are respectively provided with an outward flange, the outward flanges are provided with fixing holes, and the bottom plate is provided with screw holes corresponding to the fixing holes.

Adopt the beneficial effect of above-mentioned further scheme to be, easily realize the installation of fixing base and fix.

Furthermore, a first channel is formed in the fixing seat, the sleeve penetrates through the first channel in a left-right extending mode, a first locking screw hole is formed in the fixing seat and is vertically communicated with the first channel, and a first locking bolt is connected to the first locking screw hole in an internal thread mode.

The further scheme has the beneficial effects that when the sleeve is required to be fixed, the outer wall of the sleeve in the first channel can be compressed through screwing and fixing the first locking bolt into the first locking bolt hole, so that the sleeve is fixed and positioned; when the sleeve needs to be detached, the first locking bolt is unscrewed, and therefore the pressing and positioning of the sleeve are released.

Further, set up left right direction on the installation piece and extend the confession the second passageway that the telescopic link penetrated, still be equipped with on the installation piece with the perpendicular second locking screw that communicates of second passageway, second locking screw female connection has second locking bolt.

The beneficial effect who adopts above-mentioned further scheme is that, similar with first locking bolt's effect principle, the locking location and the unblock release of second passageway on telescopic link and the installation piece are realized to the second locking bolt.

Further, the second channel penetrates through the mounting block in the left-right direction.

The beneficial effect who adopts above-mentioned further scheme is that, when the passageway that the second passageway is run through, can be with the longer and the whole top that is located reciprocal telescopic machanism of telescopic link doing of telescopic link to can be more convenient regulation telescopic link can stretch into the telescopic internal maximum length.

Further, still include the connecting block, the connecting block pass through bolt fixed connection in the installation piece left side, the left side of connecting block with reciprocal telescopic machanism's flexible fixed connection, the bottom surface of installation piece and connecting block with the bottom plate upper surface is all spaced apart.

The beneficial effect who adopts above-mentioned further scheme is that, the connecting block is favorable to raising installation piece and bottom plate upper surface spaced distance, has also raised the height of second passageway to be convenient for the telescopic link left end runs through and passes from reciprocal telescopic machanism top after the second passageway, after being convenient for unscrew second locking bolt, can hold the left end push-and-pull telescopic link of telescopic link and adjust its telescopic maximum possible length that stretches into.

Further, the sleeve is made of transparent material or at least has an axially extending section of a viewing window made of transparent material.

Adopt above-mentioned further scheme's beneficial effect be, be convenient for direct observation sleeve in the working condition of the spring that is tested, if the fracture damage then can terminate the test in advance, stop reciprocating telescoping mechanism's operation.

Further, the reciprocating telescopic mechanism is an air cylinder, a hydraulic cylinder or an electric cylinder.

The beneficial effect who adopts above-mentioned further scheme is that, above-mentioned three kinds of telescopic machanism are more commonly used and convenient to use.

Compared with the prior art, the utility model has the technical effects and advantages that:

after the spring that receives the test is packed into in the sleeve, open reciprocal telescopic machanism and can carry out spring life test, the sleeve can lead to spring compression and resilience, and the sleeve can also prevent that the spring from popping out and hurting people, simple structure, convenient operation when splitting in the spring test process simultaneously.

The closing part can be dismantled, can install the shutoff that this end of sleeve then realized to the spring of sleeve after the closing part is installed and pour out the spring that the test was accomplished to the one end of muffjoint closing part in to the sleeve after pulling down, guarantees to blockking of the spring that is tested, ensures to test smoothly.

The telescopic link stretches into the adjustable maximum length in the sleeve to the realization is to the test of the spring of different length, and the suitability is good.

Drawings

FIG. 1 is an isometric view of a spring life testing apparatus (controller and counter not shown) according to the present invention;

FIG. 2 is a top view of the spring life testing apparatus shown in FIG. 1;

FIG. 3 is a front view of the spring life testing apparatus shown in FIG. 1;

fig. 4 is a schematic view of the spring life testing apparatus shown in fig. 3, when a transparent observation window is provided on the sleeve.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a sleeve; 2. a fixed seat; 3. a reciprocating telescoping mechanism; 4. a closure; 5. a telescopic rod; 6. a base plate; 7. mounting blocks; 8. flanging; 9. a first locking screw hole; 10. a second locking screw hole; 11. connecting blocks; 12. and (4) an observation window.

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.

In the description of the present invention, if terms indicating orientation such as "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., are used, they indicate orientation or positional relationship based on that shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the utility model provides a spring life testing device, which includes a sleeve 1, a fixed seat 2 and a reciprocating telescoping mechanism 3, wherein the sleeve 1 is fixed on the fixed seat 2, one end of the sleeve 1 is opened for a tested spring to be installed in the sleeve 1, the other end of the sleeve 1 is provided with a sealing part 4, the reciprocating telescoping mechanism 3 is provided with a telescopic rod 5 capable of extending into the sleeve 1, when the reciprocating telescoping mechanism 3 telescopes, the telescopic rod 5 can repeatedly compress and release the tested spring in the sleeve 1, the spring life testing device further includes a controller and a counter, the controller controls the reciprocating motion of the reciprocating telescoping mechanism 3, and the counter counts the reciprocating motion times of the reciprocating telescoping mechanism 3.

It should be noted that the controller and the counter are commercially available products, and a person skilled in the art can select and install the controller according to needs, and the controller can realize the times of reciprocating actions of the reciprocating telescoping mechanism (or control the time of continuous operation of power supply when the telescoping frequency is fixed), so as to ensure that the tested spring is repeatedly compressed and contracted and recovers the set times to test whether the service life of the tested spring reaches the standard; according to the requirement, the controller can also be used for controlling the reciprocating telescoping mechanism to continuously run until the spring is broken and damaged, and the counter counts the reciprocating action times when the spring is damaged, so as to determine the maximum service life (the maximum times of repeated compression and rebound) of the spring. If the automatic stop of the reciprocating telescoping mechanism after the spring is broken and the inspection of the mechanical property of the spring during the service life are required to be realized, a force sensor can be additionally arranged and connected to the telescopic rod or the closing part (for example, the telescopic rod is divided into two parts, the middle part is connected with the force sensor), the signal output end of the force sensor is electrically connected with the controller to acquire the force data in real time, when the spring is broken, the maximum pressure detected by the force sensor is greatly reduced and is abnormal, the controller receives the abnormal signal and can automatically control the reciprocating telescoping mechanism to stop running, and the corresponding product of the utility model containing the force sensor also can be included in the protection range of the utility model.

In an embodiment of the utility model, the testing mechanism further comprises a bottom plate 6 which is horizontally arranged, two fixing seats 2 are respectively fixed on the upper surface of the bottom plate 6 at left and right intervals, the sleeve 1 is horizontally arranged, the left end and the right end of the sleeve 1 are correspondingly and fixedly connected with the two fixing seats 2, the reciprocating telescopic mechanism 3 is fixed on the left side of the bottom plate 6, the telescopic end of the reciprocating telescopic mechanism 3 is fixedly connected with the left end of the telescopic rod 5 through a mounting block 7, and the right end of the telescopic rod 5 extends into the sleeve 1 through an opening at the left end of the sleeve 1.

In one embodiment of the utility model, the closing piece 4 is detachably connected to the right end of the sleeve 1, the closing piece 4 is a bolt or a bolt, and the right end of the sleeve 1 is provided with a jack matched with the bolt or a screw hole matched with the bolt.

It should be noted that the bolt and the bolt are preferably arranged perpendicular to the axis of the sleeve, which has the advantage of good blocking effect, and the closing member is not easy to fall off from the sleeve when the spring is pressed for testing. It will be appreciated that the closure member is not limited to a latch or bolt arrangement and may be of other conceivable readily removable arrangements than a strong threaded end cap which is threadably engaged with one end of the sleeve.

In an embodiment of the present invention, the front side and the rear side of the fixing seat 2 are both provided with outward flanges 8, the outward flanges 8 are provided with fixing holes, and the bottom plate 6 is provided with screw holes corresponding to the fixing holes.

In an embodiment of the present invention, the fixing base 2 is provided with a first channel extending in a left-right direction for the sleeve 1 to pass through, the fixing base 2 is further provided with a first locking screw hole 9 vertically communicated with the first channel, and the first locking screw hole 9 is connected with a first locking bolt in an internal thread manner.

In an embodiment of the present invention, a second channel is formed in the mounting block 7, the second channel extends in the left-right direction for the telescopic rod 5 to penetrate through, a second locking screw hole 10 vertically communicated with the second channel is further formed in the mounting block 7, and a second locking bolt is connected to the second locking screw hole 10 through an internal thread.

In one embodiment of the utility model, the second channel extends through the mounting block 7 in the left-right direction.

In one embodiment of the utility model, the device further comprises a connecting block 11, the connecting block 11 is fixedly connected to the left side of the mounting block 7 through a bolt, the left side of the connecting block 11 is fixedly connected with the telescopic end of the reciprocating telescopic mechanism 3, and the bottom surfaces of the mounting block 7 and the connecting block 11 are spaced from the upper surface of the bottom plate 6.

The bolt connection between the connecting block and the mounting block is preferably two bolts in front and back, and the connecting block is threaded after the mounting block is inserted from right to left.

In one embodiment of the utility model, the sleeve 1 is made entirely of transparent material or at least axially extending section of a viewing window 12 made of transparent material.

The transparent material is preferably tempered glass or organic glass.

In one embodiment of the present invention, the reciprocating telescoping mechanism 3 is a cylinder, a hydraulic cylinder or an electric cylinder.

The basic principle of the utility model is as follows: the spring that needs accept the test is filled in the sleeve from the one end of the closure piece that the sleeve was torn down, then installs the closure piece again and carries out the shutoff to this end of sleeve, can be based on the length that receives the spring of testing before here, the length that the telescopic link stretched into the sleeve other end has been adjusted in advance, then starts reciprocal telescopic machanism operation through the controller, can test receiving the spring of testing, can test whether the spring can withstand reciprocal shrink and kick-back appointed number of times, can also test the spring the biggest reciprocal shrink and kick-back number of times before the fracture.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a spring life test device, its characterized in that includes sleeve (1), fixing base (2) and reciprocal telescopic machanism (3), sleeve (1) is fixed in on fixing base (2), sleeve (1) one end opening is packed into in order to supply to receive the spring of experimenting in sleeve (1), sleeve (1) other end is equipped with closure (4), reciprocal telescopic machanism (3) have can stretch into telescopic link (5) in sleeve (1), during reciprocal telescopic machanism (3) flexible action, telescopic link (5) can compress repeatedly and release the spring of experimenting in sleeve (1) still includes controller and counter, controller control reciprocal telescopic machanism (3) reciprocating motion, the counter statistics the number of times of reciprocal telescopic machanism (3) reciprocating motion.

2. The spring life testing device according to claim 1, further comprising a horizontally arranged bottom plate (6), wherein two fixing seats (2) are fixed on the upper surface of the bottom plate (6) at left and right intervals, the sleeve (1) is horizontally arranged, the left end and the right end of the sleeve (1) correspond to the two fixing seats (2) and are fixedly connected with the left end of the bottom plate (6), the reciprocating telescoping mechanism (3) is fixed on the left side of the bottom plate (6), the telescoping end of the reciprocating telescoping mechanism (3) is fixedly connected with the left end of the telescoping rod (5) through a mounting block (7), and the right end of the telescoping rod (5) extends into the sleeve (1) through the opening at the left end of the sleeve (1).

3. The spring life testing device according to claim 2, characterized in that the closing piece (4) is detachably connected to the right end of the sleeve (1), the closing piece (4) is a bolt or a bolt, and the right end of the sleeve (1) is provided with a jack matched with the bolt or a screw hole matched with the bolt.

4. The spring life testing device according to claim 2, wherein outward flanges (8) are arranged on the front side and the rear side of the fixing seat (2), fixing holes are formed in the outward flanges (8), and screw holes corresponding to the fixing holes are formed in the bottom plate (6).

5. The spring life testing device according to claim 2, wherein a first channel is formed in the fixing seat (2) and extends in the left-right direction to allow the sleeve (1) to penetrate through, a first locking screw hole (9) is further formed in the fixing seat (2) and is vertically communicated with the first channel, and a first locking bolt is connected to the first locking screw hole (9) in an internal thread mode.

6. The spring life testing device according to claim 2, wherein a second channel is formed in the mounting block (7) and extends in the left-right direction for the telescopic rod (5) to penetrate through, a second locking screw hole (10) vertically communicated with the second channel is further formed in the mounting block (7), and a second locking bolt is connected to the second locking screw hole (10) in an internal thread mode.

7. A spring life test device according to claim 6, wherein said second channel extends through said mounting block (7) in a left-right direction.

8. The spring life testing device according to claim 7, further comprising a connecting block (11), wherein the connecting block (11) is fixedly connected to the left side of the mounting block (7) through a bolt, the left side of the connecting block (11) is fixedly connected with the telescopic end of the reciprocating telescopic mechanism (3), and the bottom surfaces of the mounting block (7) and the connecting block (11) are spaced from the upper surface of the bottom plate (6).

9. A spring life test device according to any one of claims 1 to 8, wherein the sleeve (1) is made entirely of transparent material or has at least one axially extending section of a viewing window (12) made of transparent material.

10. A spring life test device according to any one of claims 1 to 8, wherein said reciprocating telescoping mechanism (3) is a pneumatic, hydraulic or electric cylinder.