CN204673563U - Main bearing bolt stretching device - Google Patents
Main bearing bolt stretching device Download PDFInfo
- Publication number
- CN204673563U CN204673563U CN201520147281.3U CN201520147281U CN204673563U CN 204673563 U CN204673563 U CN 204673563U CN 201520147281 U CN201520147281 U CN 201520147281U CN 204673563 U CN204673563 U CN 204673563U
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- CN
- China
- Prior art keywords
- stretching device
- hydraulic
- oil pipe
- pressure oil
- df4d
- 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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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to a kind of stretching device, especially Main bearing bolt stretching device.This stretching device comprises electrodynamic pump, high-pressure oil pipe, handle, pull bar, hydraulic piston, hydraulic cylinder and gripper shoe, electrodynamic pump is connected with two hydraulic cylinders by high-pressure oil pipe, hydraulic piston is placed in hydraulic cylinder, and hydraulic piston is provided with pull bar, gripper shoe is provided with between two hydraulic cylinders, electrodynamic pump is provided with Pressure gauge, high-pressure oil pipe is connected with two hydraulic cylinders by distributor, this apparatus structure is simple and reliable, solve main-bearing stud fastening problems in DF4D diesel engine unit process of assembling, extensively can promote when DF4D diesel engine overhauls in locomotive depot, meet in Railway Bureau DF4D diesel engine the assembling demand with overhaul of repairing.
Description
Technical field
The utility model relates to a kind of stretching device, especially Main bearing bolt stretching device.
Background technology
DF4D diesel engine main bearing stud uses the steel alloy stud of high strength, hardness HB302-341, tensile strength >=981MPa, yield strength >=804 MPa, the Tightening moment that DF4D diesel engine main bearing stud requires is large, amount of tension is high, and common torsion fastener cannot meet the fastening requirements of DF4D diesel engine main bearing stud 0.84-0.90mm amount of tension, therefore, be badly in need of a kind of main-bearing stud stretching device of design, for completing the fastening work of DF4D diesel engine main bearing stud.
Utility model content
In order to overcome the deficiency of the amount of tension difference of existing stretching device, the utility model provides Main bearing bolt stretching device.
The utility model solves the technical scheme that its technical problem adopts: Main bearing bolt stretching device, comprise electrodynamic pump, high-pressure oil pipe, handle, pull bar, hydraulic piston, hydraulic cylinder and gripper shoe, electrodynamic pump is connected with two hydraulic cylinders by high-pressure oil pipe, hydraulic piston is placed in hydraulic cylinder, and hydraulic piston is provided with pull bar, between two hydraulic cylinders, be provided with gripper shoe.
According to another embodiment of the present utility model, comprise electrodynamic pump further and be provided with Pressure gauge.
According to another embodiment of the present utility model, comprise high-pressure oil pipe further and be connected with two hydraulic cylinders by distributor.
The beneficial effects of the utility model are, this apparatus structure is simple and reliable, solve main-bearing stud fastening problems in DF4D diesel engine unit process of assembling, extensively can promote when DF4D diesel engine overhauls in locomotive depot, meet in Railway Bureau DF4D diesel engine the assembling demand with overhaul of repairing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
1. electrodynamic pumps, 2. Pressure gauge, 3. high-pressure oil pipe, 4. handle, 5. distributor, 6. pull bar, 7. hydraulic piston, 8. hydraulic cylinder, 9. gripper shoe in figure.
Detailed description of the invention
If Fig. 1 is structural representation of the present utility model, Main bearing bolt stretching device, it is characterized in that, comprise electrodynamic pump 1, high-pressure oil pipe 3, handle 4, pull bar 6, hydraulic piston 7, hydraulic cylinder 8 and gripper shoe 9, electrodynamic pump 1 is connected with two hydraulic cylinders 8 by high-pressure oil pipe 3, hydraulic piston 7 is placed in hydraulic cylinder 8, and hydraulic piston 7 is provided with pull bar 6, gripper shoe 9 is provided with between two hydraulic cylinders 8, electrodynamic pump 1 is provided with Pressure gauge 2, and high-pressure oil pipe 3 is connected with two hydraulic cylinders 8 by distributor 5.
Caught handle 4 before this, the pull bar 6 of its stretching device is utilized to be arranged on main-bearing stud head, then the high-pressure oil pipe 3 between electrodynamic pump 1 and stretching device is connected, fastening pull rod 6 and main-bearing stud, open electrodynamic pump 1 subsequently, hydraulic oil enters between hydraulic piston 7 and hydraulic cylinder 8 by high-pressure oil pipe 3, observing Pressure gauge 2 makes after it reaches the force value of regulation, pull bar 6 is driven up to move when hydraulic piston 7 up moves, thus realize the object of main-bearing stud stretching, finally close electrodynamic pump 1, remove high-pressure oil pipe 3, take off stretching device, this apparatus structure is simple and reliable, solve main-bearing stud fastening problems in DF4D diesel engine unit process of assembling, extensively can promote when DF4D diesel engine overhauls in locomotive depot, meet in Railway Bureau DF4D diesel engine the assembling demand with overhaul of repairing.
Claims (3)
1. Main bearing bolt stretching device, it is characterized in that, comprise electrodynamic pump (1), high-pressure oil pipe (3), handle (4), pull bar (6), hydraulic piston (7), hydraulic cylinder (8) and gripper shoe (9), electrodynamic pump (1) is connected with two hydraulic cylinders (8) by high-pressure oil pipe (3), hydraulic piston (7) is placed in hydraulic cylinder (8), and hydraulic piston (7) is provided with pull bar (6), between two hydraulic cylinders (8), be provided with gripper shoe (9).
2. Main bearing bolt stretching device according to claim 1, is characterized in that, electrodynamic pump (1) is provided with Pressure gauge (2).
3. Main bearing bolt stretching device according to claim 1, is characterized in that, high-pressure oil pipe (3) is connected with two hydraulic cylinders (8) by distributor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520147281.3U CN204673563U (en) | 2015-03-16 | 2015-03-16 | Main bearing bolt stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520147281.3U CN204673563U (en) | 2015-03-16 | 2015-03-16 | Main bearing bolt stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204673563U true CN204673563U (en) | 2015-09-30 |
Family
ID=54173285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520147281.3U Expired - Fee Related CN204673563U (en) | 2015-03-16 | 2015-03-16 | Main bearing bolt stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204673563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005910A (en) * | 2019-07-30 | 2020-04-14 | 宝鸡石油机械有限责任公司 | Quick assembly disassembly device for hydraulic cylinder |
-
2015
- 2015-03-16 CN CN201520147281.3U patent/CN204673563U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005910A (en) * | 2019-07-30 | 2020-04-14 | 宝鸡石油机械有限责任公司 | Quick assembly disassembly device for hydraulic cylinder |
| CN111005910B (en) * | 2019-07-30 | 2022-06-10 | 宝鸡石油机械有限责任公司 | Quick assembly disassembly device for hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150930 |