CN201318971Y - Moving resistance measuring device - Google Patents
Moving resistance measuring device Download PDFInfo
- Publication number
- CN201318971Y CN201318971Y CNU2008202211774U CN200820221177U CN201318971Y CN 201318971 Y CN201318971 Y CN 201318971Y CN U2008202211774 U CNU2008202211774 U CN U2008202211774U CN 200820221177 U CN200820221177 U CN 200820221177U CN 201318971 Y CN201318971 Y CN 201318971Y
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- China
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- cylinder body
- motion
- piston rod
- resistance
- hydraulic cylinder
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- Expired - Lifetime
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Abstract
The utility model discloses a moving resistance measuring device, which comprises a support. A pushing mechanism is arranged on a mounting plate of the support, wherein the moving direction of the pushing mechanism is identical to that of a measured object. The pushing mechanism is provided with a pushing rod capable of linearly reciprocating, one end of the pushing rod is fixedly equipped with a hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixedly connected with the pushing rod, the moving rod of a piston rod is identical to that of the pushing rod, and one end of the piston rod extending out of the cylinder body is used to be connected with the measured object. The cylinder body is divided into two chambers by a piston, lateral walls of the two chambers are all equipped with shock-proof pressure gauges capable of measuring pressure of the corresponding chamber, and the chambers are equipped with corresponding release valves. The moving resistance measuring device can realize bidirectional measurement of force, and can guarantee the measured object to be identical to the actual work state. For utilizing hydraulic pressure to transmit pressure, the utility model is compact in structure and convenient in connection, and then can accurately measure friction resistance of the measured object during moving process.
Description
Technical field
The utility model relates to a kind of measurement mechanism, especially a kind of resistance of motion measurement mechanism.
Background technology
Isolating switch can reliably in time cut-off when particularly primary cut-out requires to break down electric current in electrical network.For guaranteeing reliably in time to cut-off fault current, switch off time and speed are two key factors, and the friction of motion resistance of breaker body can directly influence this two factors, needs its friction of motion resistance is measured and controlled for this reason.Though existing dynamometric device is varied, but these device for measuring force can only be used to measure on the power of single direction as pulling force or thrust or consistent with limited very difficult assurance movement locus of testee connected mode and testee movement locus, complex structure is not easy to operation, is difficult to accurately measure breaker body part frictional resistance in motion process.
The utility model content
The purpose of this utility model provides a kind of resistance of motion measurement mechanism, can measure frictional resistance in the bidirectional-movement process of testee.
The technical solution of the utility model is: a kind of resistance of motion measurement mechanism, this device comprises support, the installing plate of support is provided with the direction of motion propulsive mechanism identical with testee direction of motion, but this propulsive mechanism has the pushing ram of straight reciprocating motion, one end of pushing ram is installed with hydraulic cylinder, the cylinder body of hydraulic cylinder is fixedlyed connected with pushing ram, and the direction of motion of piston rod is identical with the direction of motion of pushing ram, and the end that piston rod stretches out cylinder body is used for being connected with testee; Be equipped with the shock-proof pressure gauge of the indoor pressure of energy measurement corresponding cavity on the sidewall of two chambers that are divided into by piston of cylinder body, each chamber is provided with corresponding air release.
Described propulsive mechanism comprises that rotation is installed on the propelling screw on the support installing plate, the propelling leading screw that described pushing ram is and advances the screw spiral to assemble, and the bottom of described hydraulic cylinder body is connected with the end that advances leading screw.
Described hydraulic cylinder is provided with propelling leading screw concentric.
The cylinder mouth of described cylinder body is by sealing screw plug sealing, between sealing screw plug and the piston rod, be equipped with O-ring seal between sealing screw plug and the cylinder body; Between piston and cylinder body, be provided with O-ring seal.
The end of stretching out cylinder body of described piston rod is provided with crossover sub.
The utility model can solve following problem: 1. dynamometry amphicheirality, the i.e. equal energy measurement of pulling force and thrust; 2. movement locus rectilinearity, promptly the movement locus of the movement locus of survey instrument and testee is consistent; 3. installation and easy and simple to handle.
The utility model is according to the characteristic and the estimating its kinetic friction force size of product, adopt hydraulic pressure conducting pressure (use the shock-proof pressure gauge sense data), realize the rectilinearity of movement locus calculating kinetic friction force according to manometric measurement data with the mode of propulsive mechanism propelling.Piston rod is connected with testee, if this moment, pushing ram promoted cylinder body to the left movement (see figure 1), reason owing to testee friction of motion resistance, will produce pressure in the cylinder body of piston rod right side, by hydraulic oil in the cylinder body pressure is conducted to the tensimeter on the cylinder body of right side, the reading that this moment, tensimeter produced is by the just approximate friction force that the testee motion is produced that equals that converts; Equally, if pushing ram pulling cylinder body moves right, the numerical value of piston rod left side measuring pressure table demonstration is by the friction force of conversion with regard to being produced for the testee motion so.
Piston rod is connected with testee by crossover sub, is consistent with the movement locus of assurance measurement mechanism and the movement locus of testee, in order to eliminate the measured deviation that is caused because of the movement locus difference.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model and coupling part general assembly synoptic diagram.
Embodiment
As shown in Fig. 1,2, the utility model comprises propelling screw 1, advances leading screw 2, hydraulic cylinder 3, and piston rod 4, sealing screw plug 5, O-ring seal 6, O-ring seal 7, O-ring seal 8, piston 9 and the aircraft fluid that is filled in the chamber constitute.Piston 9 is housed in hydraulic cylinder 3, O-ring seal 8 is housed on the cylindrical of piston 9; In piston 9 terminations piston rod 4 is housed, an end of piston rod 4 is sleeved on the sealing screw plug 5, between piston rod 4 and sealing screw plug 5 O-ring seal 6 is housed; Sealing screw plug 5 is contained in again in hydraulic cylinder 3 terminations, with contacting of hydraulic cylinder 3 O-ring seal 7 is housed between the end face at sealing screw plug 5; The other end at hydraulic cylinder 3 is connected with propelling leading screw 2, advances to be equipped with on the leading screw 2 to advance screw 1, advances on the screw 1 installing plate 10 is housed; Be equipped with the shock-proof pressure gauge 14 of the indoor pressure of energy measurement corresponding cavity on the sidewall of two chambers that are divided into by piston of hydraulic cylinder 3, each chamber also is provided with corresponding air release 15, among Fig. 1, shock-proof pressure gauge 14 is installed in the A place of hydraulic cylinder 3 left and right two chambers, and air release 15 is loaded on the B place; Installing plate 10 is fixed on the support 12 by coupling bolt 11, and piston rod 4 is fixed together by crossover sub 13 and testee.
When frictional resistance is measured in motion process to the breaker body part, support 12 is that arc-chutes body fixed part links together with testee, piston rod 4 is fixed together by the motion parts of crossover sub 13 with breaker body, advance screw 1 to drive propelling leading screw 2 rectilinear motions by rotating, the motion parts that can drive piston rod 4 and breaker body owing to the reason of hydraulic oil in the cylinder body together moves, arc-chutes ontological existence frictional resistance in motion process, will produce data this moment on shock-proof pressure gauge 14, these data are exactly the pressure characterization value that needs the frictional resistance of measurement, can calculate the size of frictional resistance again in conjunction with the hydraulic cylinder physical dimension according to these data.
Compared with prior art, the bidirectional measurement that the utility model can realizable force, and can guarantee institute It is consistent with its actual working state to survey object, owing to utilizing hydraulic conduction pressure to make the measurement mechanism structure Small and exquisite, easy to connect, thus measure accurately the frictional resistance of testee in motion process.
Claims (6)
1, a kind of resistance of motion measurement mechanism, it is characterized in that: this device comprises support, the installing plate of support is provided with the direction of motion propulsive mechanism identical with testee direction of motion, but this propulsive mechanism has the pushing ram of straight reciprocating motion, one end of pushing ram is installed with hydraulic cylinder, the cylinder body of hydraulic cylinder is fixedlyed connected with pushing ram, and the direction of motion of piston rod is identical with the direction of motion of pushing ram, and the end that piston rod stretches out cylinder body is used for being connected with testee; Be equipped with the shock-proof pressure gauge of the indoor pressure of energy measurement corresponding cavity on the sidewall of two chambers that are divided into by piston of cylinder body, each chamber is provided with corresponding air release.
2, resistance of motion measurement mechanism according to claim 1, it is characterized in that: described propulsive mechanism comprises that rotation is installed on the propelling screw on the support installing plate, described pushing ram is and the propelling leading screw that advances the assembling of screw spiral that the bottom of described hydraulic cylinder body is connected with the end that advances leading screw.
3, resistance of motion measurement mechanism according to claim 2 is characterized in that: described hydraulic cylinder is provided with propelling leading screw concentric.
4, according to claim 1 or 2 or 3 described resistance of motion measurement mechanisms, it is characterized in that: the cylinder mouth of described cylinder body is by sealing screw plug sealing, between sealing screw plug and the piston rod, be equipped with O-ring seal between sealing screw plug and the cylinder body; Between piston and cylinder body, be provided with O-ring seal.
5, according to claim 1 or 2 or 3 described resistance of motion measurement mechanisms, it is characterized in that: the end of stretching out cylinder body of described piston rod is provided with crossover sub.
6, resistance of motion measurement mechanism according to claim 4 is characterized in that: the end of stretching out cylinder body of described piston rod is provided with crossover sub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202211774U CN201318971Y (en) | 2008-11-21 | 2008-11-21 | Moving resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202211774U CN201318971Y (en) | 2008-11-21 | 2008-11-21 | Moving resistance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318971Y true CN201318971Y (en) | 2009-09-30 |
Family
ID=41197735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202211774U Expired - Lifetime CN201318971Y (en) | 2008-11-21 | 2008-11-21 | Moving resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318971Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941502A (en) * | 2017-12-26 | 2018-04-20 | 吉林大学 | Measure the device of different pressure action lower seal stiction and kinetic force of friction |
| CN111929056A (en) * | 2020-09-03 | 2020-11-13 | 中国铁道科学研究院集团有限公司 | Sealing member motion resistance testing device |
| CN112097979A (en) * | 2020-08-28 | 2020-12-18 | 清华大学 | Method for measuring motion resistance of hydraulic cylinder of driving mechanism |
-
2008
- 2008-11-21 CN CNU2008202211774U patent/CN201318971Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941502A (en) * | 2017-12-26 | 2018-04-20 | 吉林大学 | Measure the device of different pressure action lower seal stiction and kinetic force of friction |
| CN107941502B (en) * | 2017-12-26 | 2024-02-27 | 吉林大学 | Device for measuring static friction force and dynamic friction force of sealing ring under different pressure forces |
| CN112097979A (en) * | 2020-08-28 | 2020-12-18 | 清华大学 | Method for measuring motion resistance of hydraulic cylinder of driving mechanism |
| CN112097979B (en) * | 2020-08-28 | 2021-07-13 | 清华大学 | Method for measuring motion resistance of hydraulic cylinder of driving mechanism |
| CN111929056A (en) * | 2020-09-03 | 2020-11-13 | 中国铁道科学研究院集团有限公司 | Sealing member motion resistance testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |
|
| CX01 | Expiry of patent term |