CN110779702A

CN110779702A - Device for verifying durability of springs in batches

Info

Publication number: CN110779702A
Application number: CN201911133491.6A
Authority: CN
Inventors: 李迎吉; 苗盈; 陈义
Original assignee: Wuxi Institute of Technology
Current assignee: Wuxi Institute of Technology
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-02-11

Abstract

The invention discloses a device for verifying the durability of springs in batches, aiming at providing a device which has the detection capability which can be changed according to the springs and has wide applicability, its technical scheme main points are, including lower base, locate the last closing cap at base top down, by the spring mounting groove that lower base and last closing cap formed, the inside of spring mounting groove is equipped with spring replacement mechanism, the inside of spring replacement mechanism is equipped with multiunit experiment spring, the bottom of base is equipped with the drive casing down, drive casing department is equipped with detection mechanism, detection mechanism is including the drive shaft of locating drive casing one end, fixed connection is in the cam of drive shaft one end, locate the drive block at cam top, the cover is located the connecting seat at drive block top and is located the lift cylinder at connecting seat top, the cam is triangle-like's structure, drive block roll connection is in the inside of connecting seat, and the bottom is salient by the bottom of connecting seat.

Description

Device for verifying durability of springs in batches

Technical Field

The invention relates to the technical field of spring detection equipment, in particular to a device for verifying durability of springs in batches.

Background

The automobile product has wider and wider application range and larger holding capacity all over the world, and the spring is used as a common mechanical part and is widely applied to the automobile product. In order to ensure the safety and reliability of automobile products, all parts must pass strict experimental examination and verification to be used on the automobile. Because the required cycle number of the spring is high, the number of experimental samples also needs to meet a certain proportion, and therefore, a lot of difficulties are brought to the verification of the spring.

The existing common verification mode is to verify the durability of the spring by a spring tester, the cycle times of the normal spring are 60 to 100 ten thousand, if the spring tester is used for performing the durability test of the spring, only a few samples can be verified each time, and the number of samples is far from the experimental requirement; secondly, if the circulation is carried out for 100 ten thousand times, a long time is needed, and the energy consumption of the experimental machine is very high; in addition, there is also a requirement for spring size, and different testing machines are required to verify different sized springs.

At present, chinese patent publication No. CN 205157180U discloses a spring durability testing apparatus, which includes a worktable, a stroke control mechanism, a spring fixing post, an adjusting mechanism, and a spring to be tested, wherein the spring fixing post is disposed on the worktable, the spring to be tested is mounted on the spring fixing post, the stroke control mechanism is disposed at one end of the spring to be tested to compress or stretch the spring to be tested, and the adjusting mechanism is disposed at the other end of the spring to be tested to adjust the free extension length of the spring to be tested.

Although this kind of spring durability test device can carry out the durability test to the spring of multiple specification, has the universality, but: the device can not detect a large quantity of springs at the same time, and the detection period, frequency and precision of the device have improved space.

Disclosure of Invention

The invention aims at the technical problems, overcomes the defects of the prior art, and provides a device for verifying the durability of springs in batch, which can verify the durability of the springs efficiently and at low cost.

The technical scheme of the invention is further defined as follows: the utility model provides a device of spring durability is verified in batches, includes lower base, locates the upper cover at base top down, by the spring mounting groove that base and upper cover formed down, the inside of spring mounting groove is equipped with spring replacement mechanism, the inside of spring replacement mechanism is equipped with multiunit experiment spring, the bottom of base is equipped with the drive casing down, drive casing department is equipped with detection mechanism, detection mechanism is including the drive shaft of locating drive casing one end, fixed connection in the cam of drive shaft one end, locate the drive block at cam top, the connecting seat of cover locating the drive block top and locate the lift cylinder at connecting seat top, the cam is the structure of class triangle-shaped, drive block roll connection is in the inside of connecting seat, and the bottom is salient by the bottom of connecting seat.

By adopting the technical scheme, when the cam rotates, the lifting column body moves along with the cam, moves from the highest point to the lowest point along with the cam and then moves from the lowest point to the highest point, so that the lifting column body can be used as a cycle to move repeatedly, the spring replacing mechanism is convenient to install or disassemble the experimental spring on the lower base, and the detection object can be replaced in time.

Further, the spring replacement mechanism is including locating the first spout at base top down, locating the second spout of upper cover bottom, embedding the inside first sliding block of first spout and embedding the inside second sliding block of second spout, the top fixedly connected with multiunit installation base of first sliding block, the first guide post of top fixedly connected with of installation base, the outside at first guide post is established to the experiment spring housing, one side of second sliding block is equipped with swing joint in the installation footstock of second sliding block, the bottom of installation footstock is equipped with the locating hole.

Through adopting above-mentioned technical scheme, first sliding block is located first spout and slides, and the second sliding block is located the second spout and slides, is in forward state when first guide post on the installation base can guarantee to test the spring mounting, and the installation base cooperates inside the spring mounting groove with the installation footstock with the second sliding block restriction, meanwhile, is convenient for change the experiment spring at any time.

Further, be equipped with installation mechanism between connecting seat and the lift cylinder, dismantlement and installation between installation mechanism auxiliary connection seat and the lift cylinder, installation mechanism is including seting up mounting groove on the connecting seat lateral wall, the locking spring that one end was fixed in the mounting groove top and fixed connection keeps away from the locking lug of mounting groove one end in locking spring, be equipped with the draw-in groove on the lateral wall of lift cylinder, locking lug is by outside protrusion in the draw-in groove.

Through adopting above-mentioned technical scheme, installation mechanism's setting is convenient for change lift cylinder, connecting seat, can in time change the drive block of frictional deformation, and locking lug compresses tightly the back, and the connecting seat is the activity that makes progress, and after reacing the draw-in groove, locking spring resets, pops out locking lug, and locking lug is located inside the draw-in groove, fixes the position of connecting seat.

Furthermore, a second guide column is arranged between the lower base and the upper sealing cover, the second guide column penetrates through the upper sealing cover at the top to the lower base at the bottom, the second guide column is fixedly connected inside the upper sealing cover, a column sleeve is arranged between the second guide column and the lower base, the column sleeve is fixedly connected to the outer side of the bottom of the second guide column, and the bottom of the column sleeve is in threaded connection with the top of the driving shell.

Through adopting above-mentioned technical scheme, the second guide post is in the state of positive up-and-down motion when can guaranteeing down base up-and-down motion, and the pressure that further guarantees to test the spring and receive is forward pressure, has improved the precision that detects, through the column jacket with the screw-thread fit of drive shell, is convenient for fix second guide post, upper cover at drive shell top.

Further, one pot head of drive shaft is equipped with first connection bearing, another pot head of drive shaft is equipped with the second and connects the bearing, first connection bearing, second are connected the bearing and are all fixed in the inside of drive casing.

Through adopting above-mentioned technical scheme, the position of drive shaft is connected through first connection bearing, second to the drive casing, guarantees simultaneously that the drive shaft can normally rotate in drive casing inside.

Furthermore, a first end cover is arranged between the first connecting bearing and the driving shell, and a second end cover is arranged between the second connecting bearing and the driving shell.

Through adopting above-mentioned technical scheme, the end cover is used for installing first connection bearing and second connection bearing.

Furthermore, a level meter is installed at the top of the upper sealing cover and used for detecting the horizontal position of the upper sealing cover.

Through adopting above-mentioned technical scheme, the setting of spirit level can detect whether the upper cover is in the horizontally state to the power that the assurance experiment spring received is forward pressure.

The invention has the beneficial effects that:

(1) in the invention, the detection of the experimental spring, namely simple stretching and resetting compression, is realized through the change of the distance between the upper sealing cover and the lower base, the working stroke of the spring is determined by the height difference of the cam at the lowest point and the highest point, the spring experiment with different working strokes can be carried out by replacing the cams with different height differences, and the experimental device has wider applicability.

(2) According to the invention, the number and the size of the experimental springs can be changed through the mounting mechanism, different numbers of springs can be mounted according to the requirements of actual experiments, springs of different types can also be mounted, different experimental springs can be conveniently detected, multiple groups of experimental springs can be detected, the cost is lower, and the efficiency is improved at the same time.

(3) According to the invention, the stretching frequency of the spring can be changed by changing the motion frequency of the driving shaft, the driving can be realized by using a common motor, the energy consumption is low, and the detection range can be easily changed.

(4) According to the invention, the first guide post ensures that the experimental spring cannot be easily deflected when being installed, the second guide post ensures that the experimental spring cannot be easily deflected when being stretched and contracted, the load direction is ensured to be in a forward state, and the detection precision is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1;

fig. 2 is a schematic structural view of the interior of the drive case in embodiment 1;

fig. 3 is a schematic view at the lower base in embodiment 1;

FIG. 4 is a schematic view of the upper closure in example 1;

FIG. 5 is a schematic view of the mounting mechanism in embodiment 1.

In the figure, 1, a lower base; 2. an upper sealing cover; 3. a spring mounting groove; 4. a spring replacement mechanism; 41. a first chute; 42. a second chute; 43. a first slider; 44. a second slider; 5. an experimental spring; 6. a drive housing; 7. a detection mechanism; 71. a drive shaft; 72. a cam; 73. a drive block; 74. a connecting seat; 75. a lifting column; 8. installing a base; 9. a first guide post; 10. installing a top seat; 11. positioning holes; 12. an installation mechanism; 121. mounting grooves; 122. a locking spring; 123. locking the bump; 13. a card slot; 14. a second guide post; 15. a column sleeve; 16. a first connecting bearing; 17. a second connecting bearing; 18. a first end cap; 19. a second end cap; 20. a level gauge.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a device for verifying the durability of springs in batches is shown in figures 1 and 2, wherein a driving shell 6 is arranged at the bottom of the device, a driving shaft 71 with one end protruding out of the driving shell 6 is arranged inside the driving shell 6, a first connecting bearing 16 and a second connecting bearing 17 are arranged outside two ends of the driving shaft 71, a first end cover 18 is arranged between the first connecting bearing 16 and the driving shell 6, a second end cover 19 is arranged between the second connecting bearing 17 and the driving shell 6, and the driving shaft 71 protrudes out of the driving shell 6 towards one side, close to the second end cover 19, of the driving shell 6.

As shown in fig. 1 and 2, the detection mechanism 7 is disposed inside the driving housing 6, the detection mechanism 7 includes a driving shaft 71, a cam 72, a driving block 73, a connecting seat 74 and a lifting column 75, the triangular cam 72 is fixed outside the driving shaft 71, the cam 72 is located between the first connecting bearing 16 and the second connecting bearing 17, the driving block 73 is closely attached to the top of the cam 72, the connecting seat 74 is sleeved on the top of the driving block 73, the driving block 73 is connected inside the connecting seat 74 in a rolling manner, the driving block 73 can roll around its central axis inside the connecting seat 74, the bottom of the driving block 73 protrudes outwards from the bottom of the connecting seat 74, and when the cam 72 rotates, the driving block 73 is attached to the top of the cam 72 and rolls synchronously.

As shown in fig. 1, fig. 2 and fig. 5, the lifting cylinder 75 is disposed at the top of the connecting seat 74, the mounting mechanism 12 is disposed between the lifting cylinder 75 and the connecting seat 74, the mounting mechanism 12 includes a mounting groove 121, a locking spring 122 and a locking protrusion 123, the mounting mechanism 12 is mainly used for realizing the detachment and the mounting between the connecting seat 74 and the lifting cylinder 75, the mounting groove 121 is disposed on the side wall of the connecting seat 74, the top of the mounting groove 121 is fixedly connected with the locking spring 122, one end of the locking spring 122 is embedded and fixed on the connecting seat 74, the locking protrusion 123 is fixed at the other end of the locking spring 122, a clamping groove 13 is disposed on the lifting cylinder 75 near the top of the mounting groove 121, and the locking.

As shown in fig. 1, 3 and 4, the lifting column is fixed at the bottom of the lower base 1, the lifting column 75 can push the lower base 1 to move up and down when moving up and down, the upper cover 2 is arranged at the top of the lower base 1, a spring mounting groove 3 is formed between the lower base 1 and the upper cover 2, a spring replacing mechanism 4 is arranged inside the spring mounting groove 3, the spring replacing mechanism 4 comprises a first sliding groove 41, second spout 42, first sliding block 43 and second sliding block 44, the top at base 1 is seted up down to first spout 41, second spout 42 is seted up in the bottom of last closing cap 2, first sliding block 43 is located the inside slip that slides of first spout 41, second sliding block 44 is located the inside slip that slides of second spout 42, the orderly interval arrangement in top of first sliding block has twenty-five group's installation base 8, the first guide post 9 of top fixedly connected with of installation base 8, experiment spring 5 cover is established in the outside of first guide post 9.

As shown in fig. 1, 3 and 4, one side of the second sliding block 44 is provided with a mounting top seat 10 capable of sliding on the side wall of the second sliding block 44, and the bottom of the mounting top seat 10 is provided with twenty-five sets of positioning holes 11 corresponding to the mounting bases 8 one by one.

As shown in fig. 1, four sets of second guide posts 14 are disposed between the lower base 1 and the upper sealing cover 2, the second guide posts 14 penetrate from the top of the upper sealing cover 2 to the bottom of the lower base 1, a post sleeve 15 is sleeved at the bottom of the second guide posts 14, the bottom of the post sleeve 15 is in threaded connection with the top of the driving housing 6, the lower base 1 can move up and down outside the post sleeve 15, and the top of the second guide posts 14 is fixedly connected inside the upper sealing cover 2.

As shown in fig. 1, a level 20 is mounted on the top of the upper cover 2.

In the embodiment of the invention, before the device works, the driving shaft 71 is connected with an external driving motor, the driving shaft 71 is rotated to keep the cam 72 at the lowest point, the lifting column 75 and the lower base 1 are at the lowest point, the first sliding block 43 and the second sliding block 44 are moved, the mounting top seat 10 is taken down, the experimental spring 5 is sleeved on the mounting base 8 according to requirements, the experimental spring 5 is sleeved outside the first guide column 9 at the same time, the mounting top seat 10 is installed back to the second sliding block 44, the first sliding block 43 and the second sliding block 44 are pushed back to the inside of the spring mounting groove 3, and the position of the upper cover 2 is adjusted through the level gauge 20 to ensure that the upper cover is at the video position.

When the device works, the driving shaft 71 is driven by a driving motor connected with the outside to generate rotary motion, the cam 72 on the driving shaft 71 moves from the lowest point to the highest point, the lifting column 75 is pushed to move from the lowest point to the highest point, the lifting column 75 pushes the lower base 1 plate to move upwards, the position of the upper sealing cover 2 is kept still, the spring is compressed from the longest position to the shortest position, when the cam 72 on the driving shaft 71 moves from the highest point to the lowest point, the lower base 1 moves downwards under the action of the spring pressure, the lifting column 75 moves downwards until the lifting column 75 contacts the cam 72 again, a working cycle is completed, each circle of the driving shaft 71 is rotated, the experiment spring 5 completes 3 cycles, and the experiment spring 5 is repeatedly compressed and reset, so that the durability of the spring can be verified as required.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims.

Claims

1. A device for verifying the durability of springs in batches comprises a lower base (1), an upper sealing cover (2) arranged at the top of the lower base (1), and a spring installation groove (3) formed by the lower base (1) and the upper sealing cover (2), and is characterized in that a spring replacing mechanism (4) is arranged inside the spring installation groove (3), a plurality of groups of experimental springs (5) are arranged inside the spring replacing mechanism (4), a driving shell (6) is arranged at the bottom of the lower base (1), a detection mechanism (7) is arranged at the position of the driving shell (6), the detection mechanism (7) comprises a driving shaft (71) arranged at one end of the driving shell (6), a cam (72) fixedly connected to one end of the driving shaft (71), a driving block (73) arranged at the top of the cam (72), a connecting seat (74) sleeved at the top of the driving block (73), and a lifting cylinder (75) arranged at the top of the connecting seat (74), the cam (72) is of a triangle-like structure, the driving block (73) is connected to the inside of the connecting seat (74) in a rolling mode, and the bottom of the driving block is protruded from the bottom of the connecting seat (74).

2. The apparatus for batch verification of spring durability as claimed in claim 1, wherein: spring replacement mechanism (4) including locate first spout (41) at base (1) top down, locate second spout (42) of closing cap (2) bottom, first sliding block (43) inside embedding first spout (41) and embedding second spout (42) inside second sliding block (44), the top fixedly connected with multiunit installation base (8) of first sliding block (43), the first guide post (9) of top fixedly connected with of installation base (8), experiment spring (5) cover is established in the outside of first guide post (9), one side of second sliding block (44) is equipped with swing joint in installation footstock (10) of second sliding block (44), the bottom of installation footstock (10) is equipped with locating hole (11).

3. The apparatus for batch verification of spring durability as claimed in claim 2, wherein: be equipped with installation mechanism (12) between connecting seat (74) and lift cylinder (75), dismantlement and installation between installation mechanism (12) auxiliary connection seat (74) and the lift cylinder (75), installation mechanism (12) are including offering mounting groove (121), the locking spring (122) and fixed connection of fixing in mounting groove (121) top locking lug (123) of keeping away from mounting groove (121) one end in locking spring (122) and the installation between installation mechanism (12) auxiliary connection seat (74) and the lift cylinder (75), be equipped with draw-in groove (13) on the lateral wall of lift cylinder (75), locking lug (123) are by outside protrusion in draw-in groove (13).

4. An apparatus for batch validation of spring durability according to claim 3 wherein: be equipped with second guide post (14) between lower base (1) and last closing cap (2), second guide post (14) run through to lower base (1) of bottom by last closing cap (2) at top, second guide post (14) fixed connection is in the inside of last closing cap (2), be equipped with between second guide post (14) and lower base (1) column cover (15), column cover (15) fixed connection is in the outside of second guide post (14) bottom, the bottom threaded connection of column cover (15) is in the top of drive shell.

5. The apparatus for batch verification of spring durability as claimed in claim 4, wherein: one pot head of drive shaft (71) is equipped with first connection bearing (16), the other pot head of drive shaft (71) is equipped with second connection bearing (17), first connection bearing (16), second connection bearing (17) are all fixed in the inside of drive casing (6).

6. An apparatus for batch validation of spring durability according to claim 5 wherein: a first end cover (18) is arranged between the first connecting bearing (16) and the driving shell (6), and a second end cover (19) is arranged between the second connecting bearing (17) and the driving shell (6).

7. The apparatus for batch verification of spring durability as claimed in claim 6, wherein: a level gauge (20) is installed at the top of the upper sealing cover (2), and the level gauge (20) is used for detecting the horizontal position of the upper sealing cover (2).