CN214621562U - Nickel-titanium cylindrical helical thrust spring force measuring device with large height-diameter ratio - Google Patents
Nickel-titanium cylindrical helical thrust spring force measuring device with large height-diameter ratio Download PDFInfo
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- CN214621562U CN214621562U CN202121015964.5U CN202121015964U CN214621562U CN 214621562 U CN214621562 U CN 214621562U CN 202121015964 U CN202121015964 U CN 202121015964U CN 214621562 U CN214621562 U CN 214621562U
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Abstract
The utility model relates to a nickel titanium cylindrical helical thrust spring force measuring device with large height-diameter ratio relates to the field of spring dynamometry technique, including first dynamometry piece, gag lever post and second dynamometry piece, set up the spacing hole with the gag lever post adaptation on the first dynamometry piece, second dynamometry piece is installed to the gag lever post, and the gag lever post passes the spacing hole on the first dynamometry piece, forms between first dynamometry piece and the second dynamometry piece and carries out the measuring space who measures to thrust spring. This application has the staff of being convenient for to big height footpath than thrust spring carry out the advantage of power value test.
Description
Technical Field
The application relates to the field of spring force measurement technology, in particular to a nickel-titanium cylindrical helical thrust spring force measurement device with a large height-diameter ratio.
Background
The thrust spring is a spiral spring which provides thrust for a pressure source by bearing pressure, the thrust spring is generally wound by a metal wire to form a spiral shape, the thrust spring is widely applied to the fields of medical instruments, hand tools, home care, shock absorption, engine valves and the like, particularly the thrust spring in the field of the medical instruments is more widely applied, and the nickel-titanium spiral thrust spring with a large height-diameter ratio (larger than 50) applied in the field of the medical instruments generally needs to accurately measure the force value of the spring and then can guide a user to accurately select a proper model.
To nickel titanium thrust spring that big height-diameter ratio, at the in-process that carries out the power value and measure, because nickel titanium thrust spring that big height-diameter ratio is crooked relatively easily taking place in the in-process stability of compression, lead to big height-diameter ratio nickel titanium thrust spring to be difficult to carry out the power value through the mode of compression and measure, so design a dynamometry device that is fit for big height-diameter ratio nickel titanium thrust spring and carries out the power value and measure becomes the problem that awaits the opportune moment.
SUMMERY OF THE UTILITY MODEL
In order to improve the problem that big height-diameter ratio nickel titanium thrust spring among the correlation technique is difficult to carry out the power measurement with the mode of compression, this application provides a big height-diameter ratio nickel titanium cylinder spiral thrust spring force measuring device.
The application provides a pair of big radius ratio nickel titanium cylinder helical thrust spring measuring force device adopts following technical scheme:
the utility model provides a nickel titanium cylindrical helical thrust spring force measuring device of big height-diameter ratio, includes first dynamometry piece, gag lever post and second dynamometry piece, sets up the spacing hole with the gag lever post adaptation on the first dynamometry piece, and second dynamometry piece is installed to the gag lever post, and the gag lever post passes the spacing hole on the first dynamometry piece, forms between first dynamometry piece and the second dynamometry piece and carries out the measuring space that measures to thrust spring.
Through adopting above-mentioned technical scheme, at the in-process of carrying out thrust spring power value measurement, the staff at first locates the gag lever post with thrust spring cover, and make thrust spring and second dynamometry piece butt, later make the gag lever post pass the spacing hole on the first dynamometry piece, and make thrust spring deviate from the one end and the first locating part butt of second dynamometry piece, and make thrust spring keep natural state, then be connected first dynamometry piece and gag lever post respectively with universal tester's chuck, and produce axial extension to the measuring force device through universal tester, alright so with the power value of measuring thrust spring, and at the in-process of measuring because the effect of gag lever post, can restrict thrust spring's bending.
Optionally, the first force measuring piece is of a cylindrical structure, one end of the first force measuring piece is provided with a mounting opening, the other end of the first force measuring piece is closed, a limiting hole is formed in an end face, far away from one end of the mounting opening, of the first force measuring piece, and the limiting rod penetrates through the limiting hole from the inside of the first force measuring piece and then extends out of the first force measuring piece.
Through adopting above-mentioned technical scheme, carry out the in-process that the power value detected to thrust spring, the first dynamometry piece of tube-shape can restrict thrust spring on the one hand, avoids thrust spring to produce the bending as far as, and on the other hand can also play certain protection effect to thrust spring.
Optionally, the second force measuring piece is located inside the first force measuring piece, and a connecting piece used for sealing the first force measuring piece is detachably connected to one end, far away from the limiting hole, of the first force measuring piece.
Through adopting above-mentioned technical scheme, carrying out the in-process that thrust spring power value detected, the cooperation of first dynamometry piece and connecting piece can be better protects thrust spring.
Optionally, the connecting piece includes a connecting shell, a connector is provided at one end of the connecting shell, and the first force measuring piece is connected to the connecting shell through the connector by screw thread.
Through adopting above-mentioned technical scheme, the connection shell passes through threaded connection's mode demountable installation to first dynamometry piece.
Optionally, the connecting piece further comprises a connecting rod mounted to the connecting shell, the connecting rod having a smaller diameter than the first force measuring piece.
By adopting the technical scheme, the connecting piece can be more conveniently mounted on the chuck of the universal detection machine
Optionally, the second load cell is provided as a circular plate-like structure.
Through adopting above-mentioned technical scheme, in the power value that business turn over thrust spring detected the in-process, the second dynamometry piece can be better suit with thrust spring.
Optionally, the second force measuring piece is detachably mounted to the limit rod.
By adopting the technical scheme, standard modular production between the second force measuring piece and the limiting rod is facilitated.
Optionally, a mounting hole is formed in the second force measuring piece, the limiting rod comprises a first portion and a second portion which are coaxially and integrally arranged, the first portion is matched with the mounting hole, the diameter of the second portion is larger than that of the first portion, the first portion penetrates through the mounting hole in the second force measuring piece, a nut is in threaded connection with the first portion, on one side, far away from the second portion, of the second force measuring piece, and a clamping force for the second force measuring piece is formed between the nut and the second portion.
Through adopting above-mentioned technical scheme, the staff is through wearing to locate the mounting hole of second locating part with the first portion of gag lever post, then with nut threaded connection in the first portion of gag lever post, forms the clamp force to the second locating part between nut and the second portion to can dismantle the second locating part and be fixed in the gag lever post.
Optionally, the device further comprises a measuring piece for monitoring the compression amount of the thrust spring.
Through adopting above-mentioned technical scheme, can be more convenient measure thrust spring's the decrement at thrust spring's power value measurement in-process.
Optionally, the measuring part is fixedly connected to the second force measuring part, a measuring hole arranged along the length direction of the first force measuring part is formed in the outer peripheral surface of the first force measuring part, and a scale mark arranged along the length direction of the measuring hole is arranged on the first force measuring part at the position of the measuring hole.
Through adopting above-mentioned technical scheme, after thrust spring received the clamp force of first dynamometry piece and second dynamometry piece and began to produce deformation, surveying personnel can be through the comparatively accurate observation of the scale mark on the first dynamometry piece after the measuring pointer begins to warp from thrust spring, measure the amount of exercise of pointer in the measuring hole, and measure the amount of exercise of pointer in the measuring hole and be thrust spring's compressive capacity promptly, like this when surveying personnel in the process of measuring thrust spring's power value, the staff alright with the accurate power value of thrust spring under corresponding the deflection (such as 80%, 60%, 40% and 20% etc. of thrust spring compression ratio) with comparatively easy survey.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the thrust spring force value measuring device is characterized in that a first force measuring part, a second force measuring part and a limiting rod are arranged, a limiting hole is formed in the first force measuring part, the second force measuring part is installed on the limiting rod, the limiting rod penetrates through the first force measuring part, a measuring space is formed between the first force measuring part and the second force measuring part, a worker sleeves a thrust spring on the limiting rod in the measuring space in the process of measuring the force value of the thrust spring, then the force value of the thrust spring can be measured by axially stretching the first force measuring part and the limiting rod, and in the process of measuring the force value of the thrust spring, the thrust spring can be prevented from being bent as far as possible due to the action of the limiting rod;
2. the first force measuring piece is of a cylindrical structure, and the connecting piece is arranged on the first force measuring piece, so that the thrust spring is safer in the measuring process;
3. the second force measuring part is provided with a measuring part, the first force measuring part is provided with a measuring hole distributed along the length direction of the first force measuring part, and the first force measuring part at the position of the measuring hole is provided with scale marks distributed along the length direction of the measuring hole; after the thrust spring begins to deform due to the clamping force of the first force measuring piece and the second force measuring piece, a measurer can accurately observe that the measuring pointer begins to deform from the thrust spring through the scale marks on the first force measuring piece, the movement amount of the measuring pointer in the measuring hole is measured, and the movement amount of the measuring pointer in the measuring hole is the compression amount of the thrust spring.
Drawings
Fig. 1 is a schematic structural diagram of an external shape of a force measuring device in an embodiment of the present application.
Fig. 2 is a cross-sectional view of a force measuring device in an embodiment of the present application.
Fig. 3 is a top view of the first load cell in an embodiment of the present application.
Description of reference numerals: 1. a first force measuring member; 11. an installation port; 12. a limiting hole; 13. measuring a hole; 14. scale lines; 2. a limiting rod; 21. a first part; 22. a second section; 3. a second force measuring member; 31. mounting holes; 4. measuring a space; 5. a connecting member; 51. a connecting shell; 511. a connecting port; 52. a connecting rod; 6. a compression nut; 7. a measuring member; 8. a thrust spring.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a nickel-titanium cylindrical helical thrust spring force measuring device with a large height-diameter ratio. Referring to fig. 1 and 2, the force measuring device comprises a first force measuring piece 1, a limiting rod 2 and a second force measuring piece 3, the first force measuring piece 1 is of a cylindrical structure with a circular section, a mounting hole 11 is formed in one end of the first force measuring piece 1, the other end of the first force measuring piece 1 is sealed, a limiting hole 12 matched with the limiting rod 2 for use is formed in the end face of one end, away from the mounting hole 11, of the first force measuring piece 1, and the limiting hole 12 is coaxial with the first force measuring piece 1.
The second force measuring piece 3 is installed at one end of the limiting rod 2, one end, away from the second force measuring piece 3, of the limiting rod 2 penetrates out of the first force measuring piece 1 through the limiting hole 12, the second force measuring piece 3 is located in the first force measuring piece 1, and a measuring space 4 for force value testing of the thrust spring 8 is formed between the first force measuring piece 1 and the second force measuring piece 3.
In the process of carrying out the experiment of the nickel titanium thrust spring 8 dynamometry of big height-diameter ratio, the staff chooses suitable dynamometry device for use to the size of thrust spring 8, will guarantee at the in-process of selecting the dynamometry device that the staff locates gag lever post 2 with thrust spring 8 cover, the inboard of thrust spring 8 is close as far as with the outer peripheral face of gag lever post 2 mutually to avoid thrust spring 8 to appear crooked at the in-process of compressing as far as.
Then, the worker makes one end of the limiting rod 2 far away from the second force measuring piece 3 penetrate out of the first force measuring piece 1 through the limiting hole 12, then one end of the first force measuring piece 1 far away from the limiting hole 12 in the force measuring device and one end of the limiting rod 2 extending out of the first force measuring piece 1 are respectively fixed at two chuck positions of a universal testing machine, then the force measuring device is axially stretched through the universal testing machine, the second force measuring piece 3 moves for a certain distance towards the limiting hole 12 on the basis of not contacting with the thrust spring 8 in the process of axially stretching the force measuring device by the universal testing machine, the influence of external factors (such as the friction force of the limiting rod 2 and the first force measuring piece 1) can be eliminated as much as possible in the process, after the second force measuring piece 3 contacts with the thrust spring 8, the thrust spring 8 is compressed by force, and the thrust spring 8 is compressed, the limiting rod 2 can limit the thrust spring 8, so that the thrust spring 8 is prevented from being bent as much as possible, and the force value of the thrust spring 8 can be detected smoothly.
In order to facilitate a worker to fix the first force measuring piece 1 to a chuck of a universal testing machine, a connecting piece 5 is arranged at one end, far away from the limiting hole 12, of the first force measuring piece 1, the connecting piece 5 comprises a connecting shell 51 and a connecting rod 52 which are integrally arranged, a connecting port 511 matched with the first force measuring piece 1 is formed in one surface, facing the first force measuring piece 1, of the connecting shell 51, and one end, far away from the limiting hole 12, of the first force measuring piece 1 is in threaded connection with the connecting shell 51 through the connecting port 511; the diameter of the connecting rod 52 is smaller than the first force measuring part 1, the connecting rod 52 is connected to the side of the connecting shell 51 facing away from the connecting opening 511, and the connecting rod 52 and the connecting shell 51 are arranged coaxially.
In the process of carrying out the experiment of thrust spring 8 dynamometry, the staff can be with connecting shell 51 threaded connection of connecting piece 5 in first dynamometry piece 1 after installing gag lever post 2 and thrust spring 8 to first dynamometry piece 1 in, then be fixed in on the chuck of universal tester connecting rod 52 of connecting piece 5.
With reference to fig. 3, further, in order to enable the second force measuring part 3 to better accommodate the thrust spring 8, the second force measuring part 3 is provided as a circular plate-like structure, and the axis of the second force measuring part 3 is collinear with the axis of the gag lever post 2. In this way the second load cell 3 can better adapt to the thrust spring 8 when the thrust spring 8 is under the clamping force of the first load cell 1 and the second load cell 3.
Referring to fig. 2 and 3, further, the second force measuring piece 3 is detachably connected with the limiting rod 2, and specifically, a mounting hole 31 is coaxially formed in the second force measuring piece 3; the limiting rod 2 comprises a first portion 21 and a second portion 22 which are integrally arranged, the first portion 21 and the second portion 22 are coaxially arranged, the first portion 21 and a mounting hole 31 in the second force measuring piece 3 are adapted, the diameter of the second portion 22 is larger than that of the first portion 21, the first portion 21 in the limiting rod 2 penetrates through the mounting hole 31 in the second force measuring piece 3, a compression nut 6 is connected to one end, deviating from the second portion 22, of the first portion 21 in a threaded mode, a clamping force for the second force measuring piece 3 is formed between the compression nut 6 and the second portion 22, and the thrust spring 8 is sleeved on the second portion 22 of the limiting rod 2. The detachable connection between the first force measuring part 1 and the limiting rod 2 can facilitate standard modular production of the second force measuring part 3 and the limiting part by workers.
Still further, the force measuring device further comprises a measuring part 7 for monitoring the deformation of the thrust spring 8, specifically, the measuring part 7 is a measuring pointer which is fixedly connected to the outer peripheral surface of the second force measuring part 3, a measuring hole 13 which is arranged along the length direction of the first force measuring part 1 is formed in the outer side surface of the first force measuring part 1, the measuring pointer extends into the measuring hole 13, and one end of the measuring pointer, which is far away from the second force measuring part 3, is flush with the outer peripheral surface of the first force measuring part 1.
Referring to fig. 1, the second force measuring part 3 at the periphery of the measuring hole 13 is provided with a scale mark 14 for detecting the movement distance of the measuring pointer on the first force measuring part 1, and the scale mark 14 is arranged along the length direction of the first force measuring part 1.
After the thrust spring 8 begins to deform by the clamping force of the first force measuring part 1 and the second force measuring part 3, a worker can observe that the self-thrust spring 8 begins to deform through the scale marks 14 on the first force measuring part 1, the motion amount of the measuring pointer in the measuring hole 13 is measured, and the motion amount of the measuring pointer in the measuring hole 13 is the compression amount of the thrust spring 8, so that when the worker measures the force value of the thrust spring 8, the worker can easily measure the accurate force value of the thrust spring 8 under the corresponding deformation amount.
The implementation principle of the nickel-titanium cylindrical helical thrust spring force measuring device with the large height-diameter ratio is as follows: in the process of measuring the force of the helical thrust spring 8 with the large height-diameter ratio, a worker firstly penetrates out the second part 22 of the limiting rod 2 from the inside of the first force measuring part 1 through the limiting hole 12, then the worker sleeves the thrust spring 8 on the second part 22 of the limiting rod 2 in the first force measuring part 1, then the second force measuring part 3 is arranged in the first force measuring part 1, a measuring pointer on the second force measuring part 3 is arranged in the measuring hole 13 in a penetrating mode, then the first part 21 of the limiting rod 2 penetrates through the mounting hole 31 in the second force measuring part 3, the second force measuring part 3 is fixed on the limiting rod 2 through a nut, and finally the worker connects the connecting shell 51 of the connecting piece 5 to the first force measuring part 1 through threads.
After the thrust spring 8 is mounted to the force measuring device, a worker fixes the first portion 21 of the force measuring device, which extends out of the first force measuring part 1, and the connecting rod 52 of the connecting piece 5 to two chuck positions of a universal testing machine respectively, the universal testing machine axially stretches the limiting rod 2 and the connecting rod 52, in the stretching process, the second force measuring part 3 moves for a certain distance towards the direction of the limiting hole 12 on the basis of not contacting with the thrust spring 8, in the process, the influence of external factors (such as friction force between the limiting rod 2 and the first force measuring part 1 and the like) can be eliminated as much as possible, and after the second force measuring part 3 contacts with the thrust spring 8, the worker can detect the force value of the thrust spring 8 under a specific deformation amount through measuring the movement amount of a pointer in the measuring hole 13.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a nickel titanium cylindrical helical thrust spring measuring force device of big height-diameter ratio which characterized in that: the device comprises a first force measuring piece (1), a limiting rod (2) and a second force measuring piece (3), wherein a limiting hole (12) matched with the limiting rod (2) is formed in the first force measuring piece (1), the second force measuring piece (3) is installed on the limiting rod (2), the limiting rod (2) penetrates through the limiting hole (12) in the first force measuring piece (1), and a measuring space (4) for measuring a thrust spring (8) is formed between the first force measuring piece (1) and the second force measuring piece (3).
2. The force measuring device of claim 1, wherein the force measuring device comprises: the first force measuring piece (1) is of a cylindrical structure, a mounting opening (11) is formed in one end of the first force measuring piece (1), the other end of the first force measuring piece (1) is sealed, a limiting hole (12) is formed in the end face, far away from one end of the mounting opening (11), of the first force measuring piece (1), and a limiting rod (2) penetrates through the limiting hole (12) from the inside of the first force measuring piece (1) and then extends out of the first force measuring piece (1).
3. The force measuring device of claim 2, wherein the force measuring device comprises: the second force measuring piece (3) is positioned inside the first force measuring piece (1), and one end, far away from the limiting hole (12), of the first force measuring piece (1) is detachably connected with a connecting piece (5) used for sealing the first force measuring piece (1).
4. The force measuring device of claim 3, wherein the force measuring device comprises: the connecting piece (5) comprises a connecting shell (51), a connecting port (511) is formed in one end of the connecting shell (51), and the first force measuring piece (1) is connected to the connecting shell (51) through the connecting port (511) in a threaded mode.
5. The force measuring device of claim 4, wherein the force measuring device comprises: the connecting piece (5) further comprises a connecting rod (52) mounted to the connecting shell (51), the diameter of the connecting rod (52) being smaller than the first force measuring piece (1).
6. The force measuring device of claim 1, wherein the force measuring device comprises: the second force measuring element (3) is arranged in a circular plate-shaped structure.
7. The force measuring device of claim 1, wherein the force measuring device comprises: the second force measuring piece (3) is detachably mounted to the limiting rod (2).
8. The force measuring device of claim 7, wherein the force measuring device comprises: the utility model discloses a force measuring device, including first portion (21) and second portion (22), the mounting hole (31) has been seted up on second dynamometry piece (3), gag lever post (2) are including coaxial and integrative first portion (21) and the second portion (22) that set up, first portion (21) and mounting hole (31) adaptation, the diameter of second portion (22) is greater than first portion (21), mounting hole (31) on second dynamometry piece (3) are passed in first portion (21), and threaded connection has the nut on second dynamometry piece (3) keep away from first portion (21) of second portion (22) one side, form the clamp force to second dynamometry piece (3) between nut and second portion (22).
9. The force measuring device of claim 8, wherein the force measuring device comprises: the device also comprises a measuring piece (7) for monitoring the compression amount of the thrust spring (8).
10. The force measuring device of claim 9, wherein the force measuring device comprises: the measuring part (7) is fixedly connected to the second force measuring part (3), the outer peripheral surface of the first force measuring part (1) is provided with a measuring hole (13) which is arranged along the length direction of the first force measuring part (1), and the first force measuring part (1) at the position of the measuring hole (13) is provided with a scale mark (14) which is arranged along the length direction of the measuring hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121015964.5U CN214621562U (en) | 2021-05-12 | 2021-05-12 | Nickel-titanium cylindrical helical thrust spring force measuring device with large height-diameter ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121015964.5U CN214621562U (en) | 2021-05-12 | 2021-05-12 | Nickel-titanium cylindrical helical thrust spring force measuring device with large height-diameter ratio |
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| Publication Number | Publication Date |
|---|---|
| CN214621562U true CN214621562U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121015964.5U Active CN214621562U (en) | 2021-05-12 | 2021-05-12 | Nickel-titanium cylindrical helical thrust spring force measuring device with large height-diameter ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214621562U (en) |
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2021
- 2021-05-12 CN CN202121015964.5U patent/CN214621562U/en active Active
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