CN210623505U - Crank hydraulic locking device - Google Patents
Crank hydraulic locking device Download PDFInfo
- Publication number
- CN210623505U CN210623505U CN201921311173.XU CN201921311173U CN210623505U CN 210623505 U CN210623505 U CN 210623505U CN 201921311173 U CN201921311173 U CN 201921311173U CN 210623505 U CN210623505 U CN 210623505U
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- CN
- China
- Prior art keywords
- crank
- shaft
- locking
- piston
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a crank hydraulic locking device, includes main shaft, crank disc, connecting rod, crank sleeve axle, crank locking shaft, piston, hydro-cylinder body, nut type check valve and notes nozzle assembly, the crank disc fastening is opened on the head of main shaft, and it has radial T type groove to crank disc, the square head of crank locking shaft can remove in T type groove, crank sleeve axle clearance fit is epaxial at crank locking, crank locking shaft passes through crank sleeve axle and bearing and is connected with the connecting rod, fixes the piston on the other end of crank locking shaft, a single-action hydro-cylinder assembly has been constituteed with the inner chamber of hydro-cylinder body to the piston, the head processing of hydro-cylinder body has the screw hole, and this screw hole passes through the oil pocket UNICOM of round hole and hydro-cylinder, twists nut type check valve in this screw hole, notes nozzle assembly inserts in the hydraulic fluid port of nut type check valve. The utility model discloses compact structure, locking are not hard, easily realize the automation.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment, especially mechanical equipment that crank radius needs to be adjusted.
Background
The crank radius adjusting structure is a structure widely used in machinery capable of converting rotary motion into linear motion, and a common adjusting method is to process a threaded hole on a crank shaft, screw a screw rod into the threaded hole on the crank shaft, fix two ends of the screw rod on a crank disc, and drive the crank shaft to move relative to the crank disc along a radius direction by rotating the screw rod, so that the adjustment of the crank radius is realized, and then locking is performed through a screw. However, this classical approach has a major problem: for the crank which needs to bear larger transmission force, the size of the screw rod and nut mechanism is larger, the whole adjusting mechanism is heavier, and the locking is more laborious.
Disclosure of Invention
In order to solve the mechanism that current crank radius adjusted the structure more heavy, the locking is more hard not enough, the utility model provides a crank hydraulic locking device has compact structure, locks not hard, easily realizes advantages such as automatic.
The utility model provides a technical scheme that its technical problem adopted is:
a crank hydraulic locking device comprises a main shaft, a crank disc, a connecting rod, a crank sleeve shaft, a crank locking shaft, a piston, an oil cylinder body, a nut type one-way valve and an oil injection nozzle assembly, the crank disc is fastened at the head of the main shaft, a radial T-shaped groove is arranged on the crank disc, the square head of the crank locking shaft can move in the T-shaped groove, the crank sleeve shaft is sleeved on the crank locking shaft in a clearance fit manner, the crank locking shaft is connected with the connecting rod through the crank sleeve shaft and the bearing, the other end of the crank locking shaft is fixedly provided with the piston, the piston and the inner cavity of the oil cylinder body form a single-acting oil cylinder assembly, the head of the oil cylinder body is provided with a threaded hole, the threaded hole is communicated with an oil cavity of the oil cylinder through a round hole, a nut-type one-way valve is screwed into the threaded hole, and the oil injection nozzle is always inserted into an oil port of the nut-type one-way valve.
Further, the crank disc is fastened to the head of the main shaft through screws.
Still further, the piston is fixed on the other end of the crank locking shaft through a nut.
The beneficial effects of the utility model are that: compact structure, easy realization of automation, and easy locking.
Drawings
Fig. 1 is a schematic view showing an embodiment of a clamping state of a cylinder of the hydraulic locking device for a crank of the present invention.
Fig. 2 is a schematic diagram of an embodiment of a nut-type check valve and nipple assembly of the hydraulic crank locking device of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, a hydraulic locking device for a crank comprises a main shaft 1, a crank disc 2, a connecting rod 3, a crank sleeve shaft 4, a crank locking shaft 5, a piston 6, an oil cylinder body 7, a nut-type one-way valve 8 and an oil injection nozzle assembly 9, wherein the crank disc 2 is fastened on the head of the main shaft 1 through a screw, a radial T-shaped groove is formed in the crank disc 2, a square head of the crank locking shaft 5 can move in the T-shaped groove, the crank sleeve shaft 4 is sleeved on the crank locking shaft 5 in a clearance fit manner, the crank locking shaft 5 is connected with the connecting rod 3 through the crank sleeve shaft 4 and a bearing, the piston 6 is fixed on the other end of the crank locking shaft 5 through a nut, the piston 6 and an inner cavity of the oil cylinder body 7 form a single-acting oil cylinder assembly, a threaded hole is processed on the head of the oil cylinder body 7 and is communicated with an oil cavity of the oil cylinder through the, the oil nozzle assembly 9 can be inserted into the oil port of the nut type check valve 8.
The working principle of the embodiment is as follows: the rotation of the main shaft 1 drives the crank disc 2 to rotate, the crank locking shaft 5 locked on the crank disc 2 and the crank sleeve shaft 4 rotate along with the crank disc 2, and then the connecting rod 3 drives the sliding block and other mechanisms to realize reciprocating linear motion.
When the radius of the crank needs to be adjusted, the rotary motion of the main shaft 1 needs to be stopped, the oil nozzle assembly 9 is inserted into the nut-type one-way valve 8, a steel ball in the nut-type one-way valve 8 is required to be jacked up, the oil cavity of the oil cylinder is decompressed at the moment, the tensile force of the crank locking shaft 5 disappears, the crank locking shaft 5 and the crank sleeve shaft 4 can move along the T-shaped groove in the crank disc 2, and the radius of the crank can be adjusted at the moment.
When the radius of the crank is adjusted to a proper position, pressure oil enters an oil cavity of the oil cylinder through the oil injection nozzle assembly 9, under the pulling of the piston, on one hand, a square head of the crank locking shaft 5 is tightly hung on a T-shaped groove of the crank disc 2, on the other hand, the oil cylinder body 7 presses a reaction force on the crank sleeve shaft 4, and the crank sleeve shaft 4 transmits the reaction force to the crank disc 2. When the pressure of the oil cavity reaches the requirement, the oil nozzle assembly 9 is pulled out of the nut-type one-way valve 8, the steel ball in the nut-type one-way valve 8 is reset, the pressure of the oil cavity of the oil cylinder is kept at the moment, and the tension of the crank locking shaft 5 is also kept, so that the locking of the crank is realized.
Claims (3)
1. A crank hydraulic locking device is characterized by comprising a main shaft, a crank disc, a connecting rod, a crank sleeve shaft, a crank locking shaft, a piston, an oil cylinder body, a nut-type one-way valve and an oil injection nozzle assembly, the crank disc is fastened at the head of the main shaft, a radial T-shaped groove is arranged on the crank disc, the square head of the crank locking shaft can move in the T-shaped groove, the crank sleeve shaft is sleeved on the crank locking shaft in a clearance fit manner, the crank locking shaft is connected with the connecting rod through the crank sleeve shaft and the bearing, the other end of the crank locking shaft is fixedly provided with the piston, the piston and the inner cavity of the oil cylinder body form a single-acting oil cylinder assembly, the head of the oil cylinder body is provided with a threaded hole, the threaded hole is communicated with an oil cavity of the oil cylinder through a round hole, a nut-type one-way valve is screwed into the threaded hole, and the oil injection nozzle is always inserted into an oil port of the nut-type one-way valve.
2. A hydraulic locking device with crank as claimed in claim 1, characterized in that the crank disk is fastened to the head of the main shaft by means of screws.
3. A hydraulic crank locking device according to claim 1 or 2 wherein the other end of the crank locking shaft is secured to the piston by a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921311173.XU CN210623505U (en) | 2019-08-13 | 2019-08-13 | Crank hydraulic locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921311173.XU CN210623505U (en) | 2019-08-13 | 2019-08-13 | Crank hydraulic locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210623505U true CN210623505U (en) | 2020-05-26 |
Family
ID=70764739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921311173.XU Expired - Fee Related CN210623505U (en) | 2019-08-13 | 2019-08-13 | Crank hydraulic locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210623505U (en) |
-
2019
- 2019-08-13 CN CN201921311173.XU patent/CN210623505U/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 |
Granted publication date: 20200526 Termination date: 20210813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |