CN201828364U - Pre-pressure testing device for composite spring with screw rod - Google Patents
Pre-pressure testing device for composite spring with screw rod Download PDFInfo
- Publication number
- CN201828364U CN201828364U CN2010205422914U CN201020542291U CN201828364U CN 201828364 U CN201828364 U CN 201828364U CN 2010205422914 U CN2010205422914 U CN 2010205422914U CN 201020542291 U CN201020542291 U CN 201020542291U CN 201828364 U CN201828364 U CN 201828364U
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- piston
- piston cylinder
- screw
- screw rod
- complex spring
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Abstract
The utility model relates to a pre-pressure testing device for a composite spring with a screw rod, which comprises a piston barrel. A density meter is arranged on the outer wall of the piston barrel; a pipe orifice of an elastic metal knee pipe of the density meter is communicated with an inner cavity of the piston barrel; an active piston and a passive piston are arranged in tandem in the piston barrel; the two pistons are respectively arranged on two sides of the pipe orifice of the elastic metal knee pipe of the density meter; a pressure cavity is formed between two opposite end surfaces of the two pistons and inside the piston barrel; a pressure transmitting medium is filled in the pressure cavity; the two pistons are respectively matched with the inner wall of the piston barrel hermetically; a pushing mechanism for pushing the pistons is arranged at one end of the piston barrel, close to the active piston; an opening for the penetration of a composite spring to be tested is arranged at the other end of the piston barrel; the opening is provided with an end cover for preventing the composite spring from exiting; and the end cover is provided with a through hole through which the screw bolt of the composite spring passes. By the utility model, the structures of the conventional similar devices are greatly simplified, and the production cost of the similar devices is decreased.
Description
Technical field
The utility model relates to the initial tension of spring technical field of measurement and test, especially a kind of precompression proving installation that is used to the complex spring of screw rod.
Background technology
In high-voltage electrical equipment, the spring that usually needs certain-length and certain pressure, in process of production, generally can be the spring length section of being cut on demand, calculate the precompression of spring according to the stiffness factor of spring routine, still, the actual stiffness factor of the spring of same model is different in fact, therefore, the pre-pressure of the spring value that measures by said method is not very accurate; In the high-voltage electrical equipment assembling process,, just the equipment that assembles must be disintegrated again if the precompression of the spring that uses can not satisfy the demands, change spring then, waste the human and material resources capital so greatly, increased production cost, also reduced production efficiency simultaneously; The equipment of existing large-scale survey spring force on the market can be to the precompression of spring accurate measurement of making comparisons, still, and the said equipment complex structure and costing an arm and a leg.
The utility model content
The purpose of this utility model is to provide a kind of precompression proving installation that is used to the complex spring of screw rod, to solve existing precompression proving installation complex structure and the expensive problem that is used to the complex spring of screw rod.
In order to address the above problem, this uses the following scheme of novel employing: be used to the precompression proving installation with the complex spring of screw rod, comprise piston cylinder, the outer wall of described piston cylinder is provided with density meter, the elastic metallic curved tube mouth of pipe of described density meter communicates with the inner chamber of described piston cylinder, one in front and one in back be provided with active piston and passive piston in the described piston cylinder, described two-piston is divided into the both sides of the elastic metallic curved tube mouth of pipe of described density meter, form the pressure cavity in described piston cylinder inside between the opposing end surface of described two-piston, be filled with pressure transmitting medium in the described pressure cavity, described two-piston cooperates with the inner wall sealing of described piston cylinder respectively, described piston cylinder is provided with the pushing mechanism that is used to promote piston near an end of described active piston, the other end is provided with and is used for the opening that tested complex spring penetrates, described opening is provided with and is used for the end cap that the described complex spring of block withdraws from, and described end cap is provided with and is used for the through hole that the complex spring screw rod passes.
Described pushing mechanism is a lead-screw, and described piston cylinder is provided with first end cap away from an end of described end cap, described lead-screw be bolted in described first end cap and with described piston drive movingly.
Described lead-screw is provided with trip gear away from an end of described lead-screw.
Described trip gear is a throw rod, and the axis of described throw rod and the axis normal of described lead-screw and movable plug-in mounting and described lead-screw are away from an end of described piston cylinder.
Be arranged with at least one O-ring seal respectively on described two-piston and the side face that described piston cylinder cooperates.
The precompression proving installation that is used to the complex spring of screw rod of the present utility model only comprises a piston cylinder, is arranged at end cap, thrust unit and its inner two-piston at described piston cylinder both ends and be arranged at the outer density meter of described piston cylinder respectively, simplify the structure of existing same device greatly, reduced the production cost that is used to the precompression proving installation of the complex spring of screw rod.
Further, thrust unit adopts lead-screw, can come the driven plunger motion by turning lead-screw by the mode of threaded engagement, simultaneously, can realize self-locking when it reaches the working position; An end that is provided with thrust unit at described piston cylinder is provided with first end cap, can be used for protecting its inner components (as piston) not to be subjected to the influence of factor such as dust in the external environment condition, lead-screw cooperates with piston cylinder by first end cap simultaneously, can be when the two matching thread damages, change first end cap easily, reduced maintenance cost of the present utility model; On described lead-screw, trip gear is set, can alleviate staff's labour intensity, omitted instruments such as spanner, trip gear adopts throw rod and throw rod to cooperate with lead-screw is movable, can further alleviate staff's labour intensity by lever principle; On described two-piston, O-ring seal is set, can further guarantees being sealed and matched between the two.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Embodiment
As shown in Figure 1, be used to precompression proving installation with the complex spring of screw rod, comprise piston cylinder 1, the outer wall of described piston cylinder 1 is provided with density meter 2, the mouth of pipe of the elastic metallic curved tube of described density meter 2 and the inner chamber of described piston cylinder 1 connect, one in front and one in back be provided with active piston and passive piston in the described piston cylinder 1, described two-piston cooperates with the inner wall sealing of described piston cylinder 1 by O-ring seal 4 respectively, each piston is provided with two O-ring seals, certainly, in other embodiments one or two above O-ring seals can also be set on described piston, two pistons and described piston cylinder 1 be engaged in the described density meter 2 metal curved tube mouths of pipe under part form a cavity 5, be filled with hydraulic oil in the described cavity 5, certainly, in other embodiments, described hydraulic oil can also be other gas or liquid medium, one end of described piston cylinder 1 is provided with the pushing mechanism that is used to promote piston, described pushing mechanism comprises lead-screw 6 and is arranged at the throw rod 7 of lead-screw 6 one ends, the axis normal of the axis of described throw rod 7 and described lead-screw 6 and be inserted into the end of described lead-screw 6 away from described piston cylinder 1, described throw rod 7 is slidingly matched with described lead-screw 6, described piston cylinder is provided with first end cap 10 near an end of pushing mechanism, and described lead-screw 6 is spirally connected with described first end cap 10 and cooperates with described active piston transmission; Certainly, in other embodiments, described trip gear can also be other structures such as handwheel; The other end of described piston cylinder 1 is provided with and is used for the opening that tested complex spring penetrates, described opening is provided with and is used for the end cap 8 that the described complex spring of block withdraws from, described complex spring has screw rod 9 along its axis, and described end cap 8 is provided with a side that is used to meet the through hole piston cylinder that spring spiro rod passes and is set with and is used for fixing the fixed mount 11 that is used to the precompression proving installation of the complex spring of screw rod of the present utility model; The utility model in use, elder generation packs tested complex spring in the piston cylinder 1, tighten end cap 8, rotate 6 rotations of throw rod 7 drive lead-screws then and make its 1 extension in described piston cylinder simultaneously, observe the screw rod 9 that spring exposes, when complex spring reaches critical conditions and is about to compress, promptly when screw rod 9 apparent movements non-when moving, read the pressure values P of density meter 2, the internal diameter of known piston tube is obtained lifting surface area S, by the F(bullet)=PS-4F(friction force) calculate the pretightning force of spring, F(bullet wherein) be pre-pressure of the spring, F(friction force) be the friction force between O-ring seal and the described piston cylinder, when N O-ring seal, the F(bullet)=and PS-NF(friction force), F(friction force wherein) can obtain according to the decrement (presetting) of O-ring seal and with the friction factor of piston cylinder.
Claims (5)
1. be used to precompression proving installation with the complex spring of screw rod, it is characterized in that: comprise piston cylinder, the outer wall of described piston cylinder is provided with density meter, the elastic metallic curved tube mouth of pipe of described density meter communicates with the inner chamber of described piston cylinder, one in front and one in back be provided with active piston and passive piston in the described piston cylinder, described two-piston is divided into the both sides of the elastic metallic curved tube mouth of pipe of described density meter, form the pressure cavity in described piston cylinder inside between the opposing end surface of described two-piston, be filled with pressure transmitting medium in the described pressure cavity, described two-piston cooperates with the inner wall sealing of described piston cylinder respectively, described piston cylinder is provided with the pushing mechanism that is used to promote piston near an end of described active piston, the other end is provided with and is used for the opening that tested complex spring penetrates, described opening is provided with and is used for the end cap that the described complex spring of block withdraws from, and described end cap is provided with and is used for the through hole that the complex spring screw rod passes.
2. the precompression proving installation that is used to the complex spring of screw rod according to claim 1, it is characterized in that: described pushing mechanism is a lead-screw, described piston cylinder is provided with first end cap away from an end of described end cap, described lead-screw be bolted in described first end cap and with described active piston transmission movingly.
3. the precompression proving installation that is used to the complex spring of screw rod according to claim 2 is characterized in that: described lead-screw is provided with trip gear away from an end of described lead-screw.
4. the precompression proving installation that is used to the complex spring of screw rod according to claim 3, it is characterized in that: described trip gear is a throw rod, and the axis of described throw rod and the axis normal of described lead-screw and movable plug-in mounting and described lead-screw are away from an end of described piston cylinder.
5. according to each described precompression proving installation that is used to the complex spring of screw rod of claim 1-4, it is characterized in that: be arranged with at least one O-ring seal respectively on described two-piston and the side face that described piston cylinder cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205422914U CN201828364U (en) | 2010-09-26 | 2010-09-26 | Pre-pressure testing device for composite spring with screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205422914U CN201828364U (en) | 2010-09-26 | 2010-09-26 | Pre-pressure testing device for composite spring with screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201828364U true CN201828364U (en) | 2011-05-11 |
Family
ID=43966891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205422914U Expired - Fee Related CN201828364U (en) | 2010-09-26 | 2010-09-26 | Pre-pressure testing device for composite spring with screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201828364U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376192A (en) * | 2012-04-19 | 2013-10-30 | 鸿富锦精密工业（深圳）有限公司 | Spring detection device |
| CN117949201A (en) * | 2024-03-25 | 2024-04-30 | 苏州工业园区耐斯达自动化技术有限公司 | Pre-pressure testing machine and testing method thereof |
-
2010
- 2010-09-26 CN CN2010205422914U patent/CN201828364U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376192A (en) * | 2012-04-19 | 2013-10-30 | 鸿富锦精密工业（深圳）有限公司 | Spring detection device |
| CN117949201A (en) * | 2024-03-25 | 2024-04-30 | 苏州工业园区耐斯达自动化技术有限公司 | Pre-pressure testing machine and testing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151225 Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee after: Pinggao Group Co., Ltd. Patentee after: Henan high General Electric Co., Ltd. Address before: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee before: Pinggao Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20180926 |