CN219935262U - Spring life test tool and load test equipment - Google Patents

Abstract

The utility model relates to a spring life test tool and load test equipment, wherein the spring life test tool comprises a bottom plate, and a positioning seat is assembled and connected on the bottom plate; the positioning rods are detachably arranged at the top of the positioning seat, are distributed at intervals, and are parallel to the height direction of the positioning seat in the axial direction; a plurality of connecting holes are formed in the pressing block in a penetrating manner along the axial direction of the positioning rods, the positioning rods penetrate through the connecting holes in a one-to-one correspondence manner and are in sliding fit with the connecting holes, the spring is sleeved on the positioning rods, and the spring is positioned between the pressing block and the positioning seat; and the driving assembly is used for driving the pressing block to reciprocate in the height direction of the positioning seat. The tool realizes a spring life test, and solves the problem of cost waste caused by failure of assembly when the gearbox is subjected to life test due to unsatisfactory part life.

Description

Spring life test tool and load test equipment

Technical Field

The utility model relates to the technical field of spring life tests, in particular to a spring life test tool and load test equipment.

Background

The effect of the spring in the whole manufacturing industry can not be replaced, the spring exists in any mechanical equipment basically, and the spring needs to be tested after the production is finished due to the vital effect of the spring, so that the performance and the service life of the spring are ensured. The failure modes of the spring comprise elastic failure, fatigue fracture and the like, wherein the fatigue fracture is the most important failure mode, and the sudden occurrence of the fatigue fracture often causes serious equipment accidents or personal accidents, so the fatigue resistance of the spring is one of important indexes for ensuring the high strength and the service life of the spring.

Springs are also used in automotive gearboxes where spring life testing is currently performed primarily by assembling spring-loaded components into the automotive gearbox and then combining the components with other parts in the gearbox. The main disadvantage of such tests is that they require the use of a gearbox and are performed together with the assembly, and once a failure occurs it is inconvenient to determine if there is a problem with the springs or other parts in the gearbox, and the test costs are high, requiring assembly and a series of mating parts in the gearbox each time.

Disclosure of Invention

The utility model aims to provide a spring life test tool and load test equipment, which solve the problem of cost waste caused by failure in assembly of a gearbox for life test due to unsatisfactory part life.

To this end, in a first aspect, an embodiment of the present utility model provides a spring life test tool, including:

the bottom plate is provided with a positioning seat;

the positioning rods are detachably arranged at the top of the positioning seat and are distributed at intervals, and the axial direction of each positioning rod is parallel to the height direction of the positioning seat;

the pressing block is provided with a plurality of connecting holes in a penetrating manner along the axial direction of the positioning rod, the positioning rods penetrate through the connecting holes in a one-to-one correspondence manner and are in sliding fit with the connecting holes, the spring is sleeved on the positioning rod, and the spring is positioned between the pressing block and the positioning seat; and

and the driving assembly is used for driving the pressing block to reciprocate in the height direction of the positioning seat.

In one possible implementation manner, the middle part of the positioning seat is provided with a lightening hole, and the lightening hole is penetratingly arranged on the positioning seat along the axial direction perpendicular to the positioning rod.

In one possible implementation manner, the positioning seat is in a rectangular plate structure, the opening direction of the lightening hole is parallel to the thickness direction of the positioning seat, and the orthographic projection of the lightening hole in the direction perpendicular to the opening direction of the lightening hole is rectangular.

In one possible implementation, the positioning seat is detachably connected with the bottom plate through a plurality of bolts, and the bolts are connected to the side wall surface of the lightening hole close to the bottom plate.

In one possible implementation manner, a plurality of first sleeves are arranged at the top of the positioning seat, the plurality of first sleeves are in one-to-one correspondence with the plurality of positioning rods, and the positioning rods are inserted into the first sleeves.

In one possible implementation manner, a second sleeve is arranged at one end of the connecting hole, which faces the positioning seat, and the positioning rod is in sliding fit with the second sleeve.

In one possible implementation, the first sleeve is a rigid wear part.

In one possible implementation, the plurality of positioning rods are uniformly spaced in a direction perpendicular to a height direction of the positioning seat.

In a second aspect, embodiments of the present utility model provide a load testing apparatus comprising.

The dynamic load test host comprises a base and an axial driving end arranged on the base; and

the spring life test fixture according to the first aspect, wherein a bottom plate of the spring life test fixture is detachably arranged on the base, and a driving assembly of the spring life test fixture is detachably connected with the axial driving end.

In one possible implementation manner, the driving assembly comprises a guide rod, the guide rod is arranged at one end of the pressing block, which is away from the positioning seat, and is positioned at the middle part of the pressing block, and a blind hole which can be in sliding fit with the positioning rod is formed in the pressing block; one end of the guide rod, which is far away from the pressing block, is in threaded fit with the axial driving end.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, a brief description will be given below of the drawings in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. In addition, in the drawings, like parts are designated with like reference numerals and the drawings are not drawn to actual scale.

Fig. 1 shows a schematic structural diagram of a spring life test tool provided by an embodiment of the utility model;

fig. 2 shows a schematic structural diagram of a load test apparatus according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a bottom plate; 2. a positioning seat; 3. a positioning rod; 4. briquetting; 5. a spring; 6. a lightening hole; 7. a bolt; 8. a first sleeve; 9. a guide rod; 10. a base; 11. an axial driving end; 12. a guide post; 13. and a sliding groove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, an embodiment of the present utility model provides a spring life test tool, including:

the base plate 1 is provided with a positioning seat 2;

the positioning rods 3 are detachably arranged at the top of the positioning seat 2, the positioning rods 3 are distributed at intervals, and the axial direction of the positioning rods 3 is parallel to the height direction of the positioning seat 2;

the pressing block 4 is provided with a plurality of connecting holes in a penetrating manner along the axial direction of the positioning rod 3, the positioning rods 3 penetrate through the connecting holes in a one-to-one correspondence manner and are in sliding fit with the connecting holes, the spring 5 is sleeved on the positioning rod 3, and the spring 5 is positioned between the pressing block 4 and the positioning seat 2; and

and the driving assembly is used for driving the pressing block 4 to reciprocate in the height direction of the positioning seat 2.

The spring 5 is sleeved on the outer periphery of the positioning rod 3, the connecting hole of the pressing block 4 is matched with one end, far away from the positioning seat 2, of the positioning rod 3, and at the moment, two ends of the spring 5 are respectively contacted with the positioning seat 2 and the pressing block 4. Under the action of the driving component, the driving pressing block 4 moves towards the direction of the positioning seat 2, so that the spring 5 is compressed under the stress; when the driving assembly drives the pressing block 4 to move towards the direction away from the positioning seat 2, the spring 5 stretches under the action of the restoring force of the spring 5. The service life test of the spring 5 is realized by controlling the acting force of the driving assembly for pressing down the spring 5 and controlling the frequency of the reciprocating cyclic motion of the driving pressing block 4 of the driving assembly.

Specifically, a plurality of locating levers 3 detachable sets up on positioning seat 2, is provided with the locating hole including positioning seat 2 on, and locating lever 3 and locating hole grafting cooperation are in order to realize the detachable connection of locating lever 3. Or, the outer periphery side of the positioning rod 3 is provided with external threads, the positioning seat 2 is also provided with a positioning hole, the inner periphery side of the positioning hole is provided with internal threads, and the internal threads are in threaded connection with the external threads to realize detachable connection of the positioning rod 3 and the positioning seat 2. Through setting up locating lever 3 detachable on positioning seat 2, when needs carry out life test to spring 5 of different models, locating lever 3 can be changed to with the spring 5 looks adaptation of corresponding model to the realization is to the life test of many types of spring 5.

Correspondingly, when the size of the positioning rod 3 is changed, the connecting hole of the pressing block 4 is used for being matched with the positioning rod 3, so that the pressing block 4 is also adjusted accordingly. Therefore, the driving assembly is detachably connected with the pressing block 4, so that the pressing block 4 is convenient to mount and dismount, and the user can conveniently replace.

In some embodiments, the middle part of the positioning seat 2 is provided with a weight-reducing hole 6, and the weight-reducing hole 6 is penetratingly provided on the positioning seat 2 along the direction perpendicular to the axis of the positioning rod 3. The weight of the positioning seat 2 can be reduced through the arrangement of the weight reducing holes 6, the cost of the positioning seat 2 is reduced, and the installation between the positioning seat 2 and the bottom plate 1 can be facilitated.

Optionally, the positioning seat 2 is in a rectangular plate structure, the opening direction of the lightening hole 6 is parallel to the thickness direction of the positioning seat 2, and the orthographic projection of the lightening hole 6 perpendicular to the opening direction thereof is rectangular. The front projection shape of the lightening hole 6 is similar to that of the positioning seat 2, so that the cost of the lightening hole 6 can be reduced to the greatest extent. The positioning seat 2 can take other forms to meet testing requirements or to enhance structural strength.

Specifically, the positioning seat 2 is assembled and connected to the bottom plate 1, the positioning seat 2 is detachably connected to the bottom plate 1 through a plurality of bolts 7, and the bolts 7 are connected to the side wall surface of the lightening hole 6 close to the bottom plate 1. The positioning seat 2 is detachably connected to the bottom plate 1 through the arrangement of the bolts 7, and the positioning seat 2 bears more pressure when the spring 5 is subjected to life test, so that the positioning seat 2 is convenient to replace by detaching the positioning seat 2 from the bottom plate 1 when the positioning seat 2 is damaged and the like.

Meanwhile, through the arrangement of the lightening holes 6, a plurality of wall surfaces of the lightening holes 6 of the positioning seat 2 can be connected, and the operation of a user is facilitated. The side wall surface of the lightening hole 6, which is close to the bottom plate 1, is the wall surface, which is positioned below and parallel to the horizontal plane, of the lightening hole 6, a first threaded hole is formed in the wall surface in a penetrating manner along the height direction of the positioning seat 2, a second threaded hole is formed in the corresponding position of the bottom plate 1 and the first threaded hole, and the bolt 7 is in threaded fit with the first threaded hole and the second threaded hole in sequence, so that the positioning seat 2 is assembled and connected on the bottom plate 1 through the bolt 7. The positioning seat 2 is assembled and connected with the bottom plate 1 through a plurality of bolts 7, that is, the first threaded holes and the second threaded holes are correspondingly provided with a plurality of bolts 7 respectively in threaded fit with the corresponding first threaded holes and second threaded holes, so that the positioning seat 2 is connected, and meanwhile, the stability of connection of the positioning seat 2 can be improved.

In some embodiments, the plurality of positioning rods 3 are uniformly spaced in a direction perpendicular to the height direction of the positioning seat 2, and in particular, the plurality of positioning rods 3 are uniformly spaced in a length direction of the positioning seat 2.

Optionally, the driving assembly comprises a guide rod 9, the guide rod 9 is connected to one side of the pressing block 4 far away from the positioning seat 2 and located at the middle position of the pressing block 4, and the synchronous motion of the pressing block 4 is driven by the movement of the guide rod 9. Correspondingly, in order to ensure the stress stability of the springs 5 on the positioning rods 3, the positioning rods 3 are provided with odd numbers, and the guide rods 9 correspond to the positioning rods 3 positioned in the middle.

Likewise, a blind hole is formed in one end of the guide rod 9, which is matched with the pressing block 4, and is formed in the middle of the guide rod 9 and is in sliding fit with the positioning rod 3; therefore, in the moving process of the pressing block 4, the positioning rod 3 positioned in the middle can be matched with the pressing block 4 stably, and accordingly life test of the spring 5 sleeved on the positioning rod 3 is achieved.

In some embodiments, a plurality of first sleeves 8 are disposed on the top of the positioning seat 2, the plurality of first sleeves 8 are in one-to-one correspondence with the plurality of positioning rods 3, and the positioning rods 3 are inserted into the first sleeves 8. The positioning rod 3 is convenient to connect with the positioning seat 2 through the arrangement of the first sleeve 8, and meanwhile, the stability of the positioning rod 3 after the positioning seat 2 can be guaranteed.

Optionally, the connecting hole is towards the one end of positioning seat 2 is provided with the second sleeve, locating lever 3 with second sleeve sliding fit, likewise, be convenient for be connected between locating lever 3 and the briquetting 4 through the telescopic setting of second, can also increase joint strength.

Optionally, the first sleeve 8 and the second sleeve are wear-resistant steel parts, and reliability after being disassembled and assembled with the positioning rod 3 for many times is guaranteed.

In summary, according to the spring life test tool provided in this embodiment, the life test of the plurality of types of springs 5 can be realized by simply replacing individual accessories. The service life of the spring 5 can be verified before the gearbox is assembled through the tool, and cost waste caused by failure of assembly when the gearbox is subjected to life test due to the fact that the service life of parts is not in line with the requirements can be prevented.

As shown in fig. 1-2, an embodiment of the present utility model further provides a load test apparatus, including:

the dynamic load test host comprises a base 10 and an axial driving end 11 arranged on the base 10; and

the spring life test fixture according to the foregoing embodiment, the bottom plate 1 of the spring life test fixture is detachably disposed on the base 10, and the driving component of the spring life test fixture is detachably connected with the axial driving end 11.

The dynamic load test host can provide alternating load with given frequency to carry out service life verification of the alternating force load of the spring 5.

Specifically, two guide posts 12 are arranged on the base 10 at intervals, the bottom plate 1 is positioned between the two guide posts 12, the guide posts 12 are arranged in an extending manner along the height direction of the positioning seat 2, and the two guide posts 12 respectively penetrate through two sides of the axial driving end 11; the reliability of the movement of the axial drive end 11 can be ensured under the guiding action of the two guide posts 12.

In some embodiments, the driving assembly includes a guide rod 9, where the guide rod 9 is disposed at one end of the pressing block 4 away from the positioning seat 2 and is located at a middle position of the pressing block 4, and a blind hole capable of being slidably matched with the positioning rod 3 is disposed inside the pressing block 4; one end of the guide rod 9, which is far away from the pressing block 4, is in threaded fit with the axial driving end 11. Through the spiro union cooperation of guide bar 9 and axial drive end 11, both can ensure the stability that guide bar 9 and axial drive end 11 are connected, the installation and the dismantlement of spring life test frock on dynamic load test host computer of still being convenient for simultaneously.

Optionally, two sliding grooves 13 are arranged on the base 10 at intervals, the two sliding grooves 13 are located on two opposite sides of the bottom plate 1, and the sliding grooves 13 extend along the height direction perpendicular to the positioning seat 2. The dynamic load test host computer still includes the clamp plate, is provided with the slide rail with the equal sliding fit of two spouts 13 on the clamp plate, through inlaying the slide rail in locating spout 13 to realize the location to the clamp plate, the clamp plate is pressed to be established on bottom plate 1, and connect the clamp plate on base 10 through the retaining member, thereby realize fixing bottom plate 1 on base 10, guarantee bottom plate 1's stability, when avoiding spring 5 life-span test to go on, bottom plate 1 takes place to remove, thereby influences the test.

Optionally, two pressing plates are provided, and the two pressing plates are respectively located at two opposite sides of the bottom plate 1, so that the fixing effect of the bottom plate 1 on the base 10 is further improved.

It should be noted that, in this embodiment, the driving assembly is not described in detail, and the driving assembly may have a conventional structure such as an air cylinder, an electric push rod, etc. according to common knowledge of those skilled in the art.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. Spring life test frock, its characterized in that includes:

the base plate (1), the base plate (1) is assembled and connected with a positioning seat (2);

the positioning rods (3) are detachably arranged at the top of the positioning seat (2), the positioning rods (3) are distributed at intervals, and the axial direction of the positioning rods (3) is parallel to the height direction of the positioning seat (2);

the pressing block (4) is penetrated and provided with a plurality of connecting holes along the axial direction of the positioning rod (3), the positioning rods (3) penetrate through the connecting holes in a one-to-one correspondence manner and are in sliding fit with the connecting holes, the spring (5) is sleeved on the positioning rod (3), and the spring (5) is positioned between the pressing block (4) and the positioning seat (2); and

and the driving assembly is used for driving the pressing block (4) to reciprocate in the height direction of the positioning seat (2).

2. The spring life test fixture according to claim 1, wherein a lightening hole (6) is formed in the middle of the positioning seat (2), and the lightening hole (6) is formed in the positioning seat (2) in a penetrating manner along the direction perpendicular to the axis of the positioning rod (3).

3. Spring life test fixture according to claim 2, characterized in that the positioning seat (2) is of rectangular plate-shaped structure, the opening direction of the lightening hole (6) is parallel to the thickness direction of the positioning seat (2), and the orthographic projection of the lightening hole (6) in the direction perpendicular to the opening direction of the lightening hole is rectangular.

4. The spring life test fixture according to claim 2, wherein the positioning seat (2) is detachably connected with the bottom plate (1) through a plurality of bolts (7), and the bolts (7) are connected to the side wall surface of the lightening hole (6) close to the bottom plate (1).

5. The spring life test fixture according to claim 1, wherein a plurality of first sleeves (8) are arranged at the top of the positioning seat (2), the plurality of first sleeves (8) are in one-to-one correspondence with the plurality of positioning rods (3), and the positioning rods (3) are inserted into the first sleeves (8).

6. The spring life test fixture according to claim 5, wherein a second sleeve is arranged at one end of the connecting hole, which faces the positioning seat (2), and the positioning rod (3) is in sliding fit with the second sleeve.

7. Spring life test fixture according to claim 5, characterized in that the first sleeve (8) is a rigid wear part.

8. Spring life test fixture according to claim 1, characterized in that the plurality of positioning rods (3) are arranged at regular intervals in the height direction perpendicular to the positioning seat (2).

9. A load testing apparatus, comprising:

the dynamic load test host comprises a base (10) and an axial driving end (11) arranged on the base (10); and

the spring life test fixture according to any of claims 1-8, wherein a bottom plate (1) of the spring life test fixture is detachably arranged on the base (10), and a driving assembly of the spring life test fixture is detachably connected with the axial driving end (11).

10. The load test device according to claim 9, wherein the driving assembly comprises a guide rod (9), the guide rod (9) is arranged at one end of the pressing block (4) away from the positioning seat (2) and is positioned at the middle position of the pressing block (4), and a blind hole which can be in sliding fit with the positioning rod (3) is formed in the pressing block (4); one end of the guide rod (9) far away from the pressing block (4) is in threaded fit with the axial driving end (11).