CN212959345U - Hydraulic loading device - Google Patents
Hydraulic loading device Download PDFInfo
- Publication number
- CN212959345U CN212959345U CN202021383609.9U CN202021383609U CN212959345U CN 212959345 U CN212959345 U CN 212959345U CN 202021383609 U CN202021383609 U CN 202021383609U CN 212959345 U CN212959345 U CN 212959345U
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- Prior art keywords
- piston
- inner cavity
- oil
- compression space
- hydraulic
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- 239000003921 oil Substances 0.000 claims abstract description 39
- 230000006835 compression Effects 0.000 claims abstract description 24
- 238000007906 compression Methods 0.000 claims abstract description 24
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model provides a hydraulic pressure loading device, include: a housing, a piston, and a drive rod; the shell is provided with a cylindrical inner cavity, and the two ends of the inner cavity are respectively an open end and a closed end along the axial direction of the inner cavity; the piston is cylindrical with the diameter matched with the inner cavity, and extends into the inner cavity from the opening end so as to form a compression space between the piston and the inner wall of the closed end, an oil inlet hole allowing hydraulic oil to enter the compression space is formed in the side wall of the compression space, and an oil outlet hole used for communicating the compression space with the loading oil cylinder is formed in the closed end; the driving rod is connected to one side of the piston, which is far away from the closed end, and can drive the piston to move along the axis of the inner cavity so as to push hydraulic oil entering the compression space from the oil inlet hole to be discharged from the oil outlet hole and enter the loading oil cylinder. The utility model has the advantages of easily remove, work strong adaptability can noise abatement pollution, can also carry out accurate control to the speed of producing oil simultaneously.
Description
Technical Field
The utility model relates to a thrust measurement technical field, in particular to hydraulic loading device.
Background
The working force sensor is an important part for engine test and test, and needs to be calibrated in order to improve the precision of the working force sensor. At present, the calibration of the working force sensor is carried out by using an oil cylinder for loading, and the driving of the oil cylinder is carried out through a hydraulic station. The hydraulic station is not easy to move, the working adaptability is poor, and the noise is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydraulic pressure loading device, it easily removes, and work strong adaptability can the noise abatement pollution simultaneously.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a hydraulic loading device for to the inside injection hydraulic oil of loading cylinder on the engine test bed, in order to change loading force of loading cylinder, include: a housing, a piston, and a drive rod;
the shell is provided with a cylindrical inner cavity, and two ends of the inner cavity are respectively an open end and a closed end along the axial direction of the inner cavity;
the piston is cylindrical, the diameter of the piston is matched with that of the inner cavity, the piston extends into the inner cavity from the opening end, so that a compression space is formed between the piston and the inner wall of the closed end, an oil inlet hole allowing hydraulic oil to enter the compression space is formed in the side wall of the compression space, and an oil outlet hole used for communicating the compression space with the loading oil cylinder is formed in the closed end;
the driving rod is connected to one side, far away from the closed end, of the piston and can drive the piston to move along the axis of the inner cavity so as to push hydraulic oil entering the compression space from the oil inlet hole to be discharged from the oil outlet hole and enter the loading oil cylinder.
Preferably, the driving rod is provided with threads, the piston is provided with a screw hole matched with the threads on the driving rod, and the driving rod is in threaded connection with the screw hole and drives the piston to move by screwing in or screwing out.
Preferably, the device also comprises a connecting sleeve;
the piston is provided with a mounting groove, the connecting sleeve is fixedly arranged in the mounting groove, and the screw hole is formed in the connecting sleeve.
Preferably, including pins
The side wall of the mounting groove is provided with a first pin hole, the connecting sleeve is provided with a second pin hole corresponding to the first pin hole, and the pin is arranged in the first pin hole and the second pin hole in a penetrating mode so as to fix the connecting sleeve in the mounting groove.
Preferably, the number of the second pin holes is at least two, the at least two second pin hole holes are uniformly distributed in the circumferential direction of the connecting sleeve, the number of the first pin holes is equal to that of the second pin holes and is in one-to-one correspondence, and the number of the pins is equal to that of the second pin holes and is in one-to-one correspondence.
Preferably, a sealing member is provided between the outer wall of the piston and the side wall of the inner chamber to seal a gap between the outer wall of the piston and the side wall of the inner chamber.
Preferably, an annular mounting groove extending along the circumferential direction of the inner cavity is formed in the side wall of the inner cavity, and the sealing component is annular and matched with the mounting groove and is arranged in the mounting groove.
Preferably, the device further comprises a driving device;
the driving device is connected with the driving rod and drives the driving rod to drive the piston to move.
Preferably, the drive apparatus includes a motor and a speed reducer, the motor being connected to the drive rod through the speed reducer.
The utility model discloses a hydraulic loading device, through wiping privately the actuating lever drive the piston is followed the axis motion of inner chamber is passed through in order to promote the inlet port gets into the hydraulic oil in compression space is followed the oil outlet is got rid of, and enters into technical scheme among the loading cylinder has easily to remove, and work strong adaptability can noise abatement pollution's advantage simultaneously.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the hydraulic loading device of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
Wherein: 1. a housing; 11. an inner cavity; 12. a closed end; 13. compressing the space; 14. an oil inlet hole; 15. an oil outlet hole; 16. mounting grooves; 2. a piston; 21. a screw hole; 22. connecting sleeves; 23. a pin; 24. a first pin hole; 25. a second pin hole; 3. a drive rod; 4. a sealing member; 5. a drive device; 51. an electric motor; 52. and a speed reducer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following will explain the mobile working chair of the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, a hydraulic loading device for injecting hydraulic oil into a loading cylinder (not shown) on an engine test bed to change a loading force of the loading cylinder includes: a housing 1, a piston 2 and a drive rod 3. The housing 1 has a cylindrical inner cavity 11, and the two ends of the inner cavity 11 are an open end (not shown) and a closed end 12 along the axial direction of the inner cavity 11. The piston 2 has a cylindrical shape with a diameter matched with that of the inner cavity 11 and extends into the inner cavity 11 from the open end so that a compression space 13 is formed between the piston 2 and the inner wall of the closed end 12, an oil inlet 14 for allowing hydraulic oil to enter the compression space 13 is provided on the side wall of the compression space 13, and an oil outlet 15 for communicating the compression space 13 with the charging cylinder is provided on the closed end 12. The driving rod 3 is connected to the side of the piston 2 away from the closed end 12 and can drive the piston 2 to move along the axis of the inner cavity 11 so as to push hydraulic oil entering the compression space 13 from the oil inlet 14 to be discharged from the oil outlet 15 and enter the loading cylinder. When the hydraulic loading device is used, hydraulic oil can be firstly injected into the compression space 13 from the oil inlet 14, then the oil inlet is blocked, the oil outlet 15 is correspondingly connected with the loading oil cylinder, then the driving rod 3 is driven by external driving force to drive the piston 2 to move towards the closed end 12, and then the hydraulic oil in the compression space 13 is pressed into the loading oil cylinder through the oil outlet 15 to drive the loading oil cylinder to work. By adopting the technical scheme, the hydraulic loading device can be manufactured to be small and exquisite, is convenient to move, improves the working adaptability, reduces the noise and reduces the noise pollution.
As an alternative, as shown in fig. 1, a screw thread is provided on the driving rod 3, a screw hole 21 matching with the screw thread on the driving rod 3 is provided on the piston 2, and the driving rod 3 is screwed into the screw hole 21 and drives the piston 2 to move by screwing in or out. By adopting the mode, the speed of injecting the hydraulic oil into the loading oil cylinder can be controlled by controlling the rotating speed of the driving rod 3, and the fine adjustment effect is realized. In specific work, the speed of injecting the hydraulic oil into the loading oil cylinder can be flexibly controlled.
Further, as shown in fig. 1 and fig. 2, the connecting device further includes a connecting sleeve 22; the piston 2 is provided with an installation groove 16, a connecting sleeve 22 is fixedly arranged in the installation groove 16, and a screw hole 21 is formed in the connecting sleeve 22. The connecting sleeve and the piston 2 are manufactured in a split mode, so that the piston or the connecting sleeve can be maintained or replaced conveniently. Specifically, as shown in fig. 2, the connecting device includes a pin 23, a first pin hole 24 is provided on a side wall of the mounting groove 16, a second pin hole 25 corresponding to the first pin hole 24 is provided on the connecting sleeve 22, and the pin 23 is inserted into the first pin hole 24 and the second pin hole 25 to fix the connecting sleeve 22 in the mounting groove 16. Therefore, the installation firmness of the connecting sleeve 2 can be ensured, and the connecting sleeve 22 is prevented from being separated from the installation groove 16. In actual manufacturing, the number of the second pin holes 25 is at least two, the connecting sleeves 22 with 25 holes of at least two second pin holes are uniformly arranged in the circumferential direction, the number of the first pin holes 24 is equal to that of the second pin holes 25 and corresponds to the number of the first pin holes 25 one by one, and the number of the pins 23 is equal to that of the second pin holes 25 and corresponds to one by one. The firmness of the connection sleeve 22 can be further improved by fixing the connection sleeve 22 by means of at least two pins 23.
As an embodiment, as shown in fig. 1, a sealing member 4 is provided between the outer wall of the piston 2 and the side wall of the inner chamber 11 to seal a gap between the outer wall of the piston 2 and the side wall of the inner chamber 11. This can prevent the hydraulic oil in the compression space 13 from leaking out from the gap between the outer wall of the piston 2 and the side wall of the inner chamber 11. Further, as shown in the figure, an annular mounting groove 16 extending along the circumferential direction of the inner cavity 11 is provided on the side wall of the inner cavity 11, and the sealing member 4 is annular and is disposed in the mounting groove 16 to ensure the mounting firmness of the sealing member 4, in practical use, the sealing member 4 may be a framework oil seal, but is not limited thereto, and may be other members capable of achieving the purpose of the invention.
As an embodiment, as shown in fig. 1, a driving device 5; the driving device 5 is connected with the driving rod 3 and drives the driving rod 3 to drive the piston 2 to move. Specifically, as shown in the figure, the drive device 5 includes a motor 51 and a speed reducer 52, and the motor 51 is connected to the drive lever 3 through the speed reducer 52. When the driving rod 3 is screwed into the screw hole 21, the motor 51 drives the driving rod 3 to rotate through the speed reducer 52, so as to realize screwing in or screwing out of the driving rod 3 in the screw hole 21.
The above embodiment is the utility model has the advantages of easily remove, work strong adaptability can noise abatement pollution, can also carry out accurate control to the speed of producing oil simultaneously.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. The utility model provides a hydraulic loading device for to the inside hydraulic oil that injects of loading cylinder on the engine test bed, in order to change loading force of loading cylinder, its characterized in that:
the method comprises the following steps: a housing, a piston, and a drive rod;
the shell is provided with a cylindrical inner cavity, and two ends of the inner cavity are respectively an open end and a closed end along the axial direction of the inner cavity;
the piston is cylindrical, the diameter of the piston is matched with that of the inner cavity, the piston extends into the inner cavity from the opening end, so that a compression space is formed between the piston and the inner wall of the closed end, an oil inlet hole allowing hydraulic oil to enter the compression space is formed in the side wall of the compression space, and an oil outlet hole used for communicating the compression space with the loading oil cylinder is formed in the closed end;
the driving rod is connected to one side, far away from the closed end, of the piston and can drive the piston to move along the axis of the inner cavity so as to push hydraulic oil entering the compression space from the oil inlet hole to be discharged from the oil outlet hole and enter the loading oil cylinder.
2. The hydraulic loading device of claim 1, wherein:
the driving rod is provided with threads, the piston is provided with a screw hole matched with the threads on the driving rod, and the driving rod is connected in the screw hole in a threaded manner and drives the piston to move by screwing in or screwing out.
3. The hydraulic loading device of claim 2, wherein:
the device also comprises a connecting sleeve;
the piston is provided with a mounting groove, the connecting sleeve is fixedly arranged in the mounting groove, and the screw hole is formed in the connecting sleeve.
4. The hydraulic loading device of claim 3, wherein:
comprising a pin
The side wall of the mounting groove is provided with a first pin hole, the connecting sleeve is provided with a second pin hole corresponding to the first pin hole, and the pin is arranged in the first pin hole and the second pin hole in a penetrating mode so as to fix the connecting sleeve in the mounting groove.
5. The hydraulic loading device of claim 4, wherein:
the number of the second pin holes is at least two, the at least two second pin hole holes are uniformly distributed in the circumferential direction of the connecting sleeve, the number of the first pin holes is equal to that of the second pin holes and corresponds to the first pin holes in a one-to-one mode, and the number of the pins is equal to that of the second pin holes and corresponds to that of the second pin holes in a one-to-one mode.
6. The hydraulic loading device according to any one of claims 1 to 5, wherein:
and a sealing part is arranged between the outer wall of the piston and the side wall of the inner cavity and used for sealing a gap between the outer wall of the piston and the side wall of the inner cavity.
7. The hydraulic loading device of claim 6, wherein:
the side wall of the inner cavity is provided with an annular mounting groove extending along the circumferential direction of the inner cavity, and the sealing component is annular and matched with the mounting groove and is arranged in the mounting groove.
8. The hydraulic loading device according to any one of claims 1 to 5, wherein:
also includes a drive device;
the driving device is connected with the driving rod and drives the driving rod to drive the piston to move.
9. The hydraulic loading device of claim 8, wherein:
the driving apparatus includes a motor and a speed reducer, and the motor is connected to the driving rod through the speed reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021383609.9U CN212959345U (en) | 2020-07-14 | 2020-07-14 | Hydraulic loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021383609.9U CN212959345U (en) | 2020-07-14 | 2020-07-14 | Hydraulic loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212959345U true CN212959345U (en) | 2021-04-13 |
Family
ID=75392691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021383609.9U Expired - Fee Related CN212959345U (en) | 2020-07-14 | 2020-07-14 | Hydraulic loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212959345U (en) |
-
2020
- 2020-07-14 CN CN202021383609.9U patent/CN212959345U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20210413 |