CN211306145U - Improved hydraulic wrench - Google Patents
Improved hydraulic wrench Download PDFInfo
- Publication number
- CN211306145U CN211306145U CN201921604337.8U CN201921604337U CN211306145U CN 211306145 U CN211306145 U CN 211306145U CN 201921604337 U CN201921604337 U CN 201921604337U CN 211306145 U CN211306145 U CN 211306145U
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- pawl
- shell
- ratchet wheel
- fixed block
- pressure oil
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses an improved hydraulic wrench, which is characterized in that the improved hydraulic wrench comprises a shell, a hydraulic cylinder, a ratchet wheel, a pawl, a rotating body and a counter-force arm; a reaction arm is arranged on the shell; a hydraulic cylinder is arranged in the shell; a piston is arranged in the hydraulic cylinder; a piston rod is arranged on the piston; a pawl is arranged on the piston rod; the piston rod is connected with the pawl through a driving pin; the pawl is matched and connected with the ratchet wheel; a driving shaft is arranged on the ratchet wheel; a backstop pawl is arranged on the side edge of the ratchet wheel; the stopping pawl is matched with the ratchet wheel and connected with the upper end of the shell, and a fixed block is arranged at the upper end of the shell; the fixed block is provided with a rotating body; a rotary joint is arranged on the rotary body; and the rotary joint is provided with a male joint and a female joint. The utility model discloses simple structure, convenient to use can automatic oil extraction when the oil pressure surpasss rated pressure, comes stabilizing force, protection device, increase of service life practices thrift the cost.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a hydraulic machinery technical field specifically indicates a modified hydraulic wrench.
[ background of the invention ]
Hydraulic wrench is with hydraulic pressure as power, provide big moment of torsion output, a professional bolt tightening tool for the installation of bolt and dismantlement, often be used for screwing up and the bolt that the pine is greater than an inch of tearing open, application range is very extensive, present hydraulic wrench application can make the oil pressure unstable, take place the card pause phenomenon when causing the piston rod activity, the oil pressure too high still can cause the damage to seal assembly such as sealing washer, lead to spanner to damage unable normal work after seal assembly damages, thereby make the life of spanner reduce, and the cost is improved. To this end, we propose an improved hydraulic wrench.
[ summary of the invention ]
The utility model aims at solving the above problems and providing an improved hydraulic wrench.
In order to achieve the above purpose, the utility model provides a following technical scheme: an improved hydraulic wrench is characterized by comprising a shell, a hydraulic cylinder, a ratchet wheel, a pawl, a rotating body and a counterforce arm; a reaction arm is arranged on the shell; a hydraulic cylinder is arranged in the shell; a piston is arranged in the hydraulic cylinder; a piston rod is arranged on the piston; a pawl is arranged on the piston rod; the piston rod is connected with the pawl through a driving pin; the pawl is matched and connected with the ratchet wheel; a driving shaft is arranged on the ratchet wheel; a backstop pawl is arranged on the side edge of the ratchet wheel; the backstop pawl is matched and connected with the ratchet wheel; springs are fixedly arranged on the pawl and the backstop pawl; the other end of the spring is fixedly arranged on the shell.
Preferably, a fixed block is mounted at the upper end of the shell; the fixed block is provided with a rotating body; a rotary joint is arranged on the rotary body; and the rotary joint is provided with a male joint and a female joint.
Preferably, a safety valve is arranged on the side edge of the fixed block; the safety valve comprises a valve rod, a spring and a nut; a valve hole is formed in the side edge of the fixed block; a valve rod and a nut are arranged in the valve hole; a spring is arranged between the valve rod and the nut; the valve hole is connected with a low-pressure oil pipe.
Preferably, a sealing ring is arranged at the joint of the shell and the high-pressure oil pipe and the low-pressure oil pipe of the fixed block; a plurality of sealing rings are arranged at the joint of the fixed block and the rotating body; and a plurality of sealing rings are arranged at the joint of the rotating body and the rotating joint.
Preferably, the rotating body, the fixed block and the shell are internally provided with a high-pressure oil pipe (17) and a low-pressure oil pipe; and the high-pressure oil pipe and the low-pressure oil pipe are both connected with the hydraulic cylinder.
The utility model has the advantages that: this hydraulic wrench simple structure, convenient to use can automatic oil extraction when the oil pressure surpasss rated pressure, comes stabilizing pressure, protection device, increase of service life practices thrift the cost.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an external view of the present invention.
Fig. 3 is a partial enlarged view of the position a of the present invention.
Fig. 4 is a partial enlarged view of the position B of the present invention.
Illustration of the drawings: 1 reaction arm; 2, a hydraulic cylinder; 3 stopping the pawl; 4, a shell; 5 driving the shaft; 6, ratchet wheel; 7 a pawl; 8 driving the pin; 9 a safety valve; 901 nuts; 902 a spring; 903 a valve stem; 904 a valve bore; 10, fixing blocks; 11 a swivel joint; 12, female connection; 13, male connection; 14 a piston; 15 a piston rod; 16 sealing rings; 17 high-pressure oil pipes; 18 rotating the block; 19 low pressure tubing; 20 springs.
Detailed Description
The following describes an improved hydraulic wrench according to the present invention with reference to the accompanying drawings.
Referring to fig. 1-4, the improved hydraulic wrench of the present embodiment is characterized by comprising a housing 4, a hydraulic cylinder 2, a ratchet 6, a pawl 7, a rotator 18 and a reaction arm 1; the shell 4 is provided with a reaction arm 1; a hydraulic cylinder 2 is arranged in the shell 4; a piston 14 is arranged in the hydraulic cylinder 2; a piston rod 15 is arranged on the piston 14; the piston rod 15 is provided with a pawl 7; the piston rod 15 is connected with the pawl 7 through a driving pin 8; the pawl 7 is matched and connected with the ratchet wheel 6; a driving shaft 5 is arranged on the ratchet wheel 6; a backstop pawl 3 is arranged on the side edge of the ratchet wheel 6; the backstop pawl 3 is matched and connected with the ratchet 6; springs 20 are fixedly arranged on the pawl 7 and the backstop pawl 3; the other end of the spring 20 is fixedly arranged on the shell 4; a fixed block 10 is arranged at the upper end of the shell 4; a rotating body 18 is arranged on the fixed block 10; the rotary joint 11 is arranged on the rotary body 18; the rotary joint 11 is provided with a male joint 13 and a female joint 12; and a safety valve 9 is arranged on the side edge of the fixed block 10. The safety valve 9 comprises a valve rod 903, a spring 902 and a nut 901; a valve hole 904 is formed in the side edge of the fixed block 10; a valve rod 903 and a nut 901 are arranged in the valve hole 904; a spring 902 is arranged between the valve rod 903 and the nut 901; the valve hole 904 is connected with the low-pressure oil pipe 19; a sealing ring 16 is arranged at the joint of the shell 4 and an oil pipe 17 of the fixed block 10; a plurality of sealing rings 16 are arranged at the joint of the fixed block 10 and the rotating body 18; a plurality of sealing rings 16 are arranged at the joint of the rotating body 18 and the rotating joint 11; the rotating body 18, the fixed block 10 and the shell 4 are internally provided with a high-pressure oil pipe 17 and a low-pressure oil pipe 19; the high-pressure oil pipe 17 and the low-pressure oil pipe 19 are both connected with the hydraulic cylinder 2.
The utility model discloses a working process, at first the public connecing 13 and the high pressure fuel pipe connection on the hydraulic wrench swivel joint 11, female connecing 12 and the low pressure oil pipe connection, then start electric pump high pressure oil and get into public connecing 13 through high pressure fuel pipe, high pressure oil gets into rotator 18 through high pressure fuel pipe, then get into the high pressure fuel pipe who is connected with the pneumatic cylinder, finally get into pneumatic cylinder 2 again, high pressure oil gets into pneumatic cylinder and promotes piston 14 forward motion, thereby drive piston rod 15 forward motion, piston rod 15 drives pawl 7 through drive pin 8 and moves, pawl motion promotes ratchet 6 and rotates, thereby the ratchet drives drive shaft 5 and rotates, after piston rod 15 pushes to the summit, the electric pump switches into the low pressure, low pressure oil gets into female connecing 12 from low pressure fuel pipe, the low pressure has from female connecing inflow low pressure fuel pipe and then gets into rotator 18, then flows into the low pressure fuel pipe who, finally, the low-pressure oil enters the hydraulic cylinder 2 again, the low-pressure oil enters the hydraulic cylinder to push the piston to move back, so that the piston rod 15 is driven to move back, the piston rod drives the pawl 7 through the driving pin, the springs on the pawl and the backstop pawl are contracted, then the pawl and the backstop pawl clamp 3 clamp the ratchet 6 from two directions to prevent the ratchet from rotating back, when the pressure of the low-pressure oil exceeds the rated pressure, the pressure of the low-pressure oil pipe is under the pressure of the safety valve 9, the valve rod 903 is pushed to move back, the spring 902 also contracts, the low-pressure oil pipe is communicated with the outside to begin oil drainage, when the pressure of the safety valve 9 is greater than the pressure of the low-pressure oil pipe, the valve rod 902 is pushed to move forward until the connection between
The beneficial effects of the utility model, this hydraulic wrench simple structure, convenient to use, through the side installation relief valve 9 at fixed block 10, pressure when in the low pressure oil pipe is greater than the pressure in the relief valve 9 valve, low pressure oil in the low pressure oil pipe promotes the valve rod rearward movement to drive the spring and be the shrink motion, start the oil drain when low pressure oil pipe is connected with the external world, when pressure reduces, the spring begins to reset, low pressure oil pipe and external end are connected and are stopped draining. Therefore, the pressure in the wrench can be stabilized, the safety in use is ensured, the service life of the wrench can be prolonged, and the cost is saved.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (5)
1. An improved hydraulic wrench is characterized by comprising a shell (4), a hydraulic cylinder (2), a ratchet wheel (6), a pawl (7), a rotating body (18) and a reaction arm (1); the shell (4) is provided with a reaction arm (1); a hydraulic cylinder (2) is arranged in the shell (4); a piston (14) is arranged in the hydraulic cylinder (2); a piston rod (15) is arranged on the piston (14); a pawl (7) is arranged on the piston rod (15); the piston rod (15) is connected with the pawl (7) through a driving pin (8); the pawl (7) is matched and connected with the ratchet wheel (6); a driving shaft (5) is arranged on the ratchet wheel (6); a backstop pawl (3) is arranged on the side edge of the ratchet wheel (6); the backstop pawl (3) is matched and connected with the ratchet wheel (6); springs (20) are fixedly arranged on the pawl (7) and the backstop pawl (3); the other end of the spring (20) is fixedly arranged on the shell (4).
2. An improved hydraulic wrench as claimed in claim 1, wherein: a fixed block (10) is arranged at the upper end of the shell (4); a rotating body (18) is arranged on the fixed block (10); a rotary joint (11) is arranged on the rotary body (18); and a male connector (13) and a female connector (12) are arranged on the rotary joint (11).
3. An improved hydraulic wrench as claimed in claim 2, wherein: a safety valve (9) is arranged on the side edge of the fixed block (10); the safety valve (9) comprises a valve rod (903), a spring (902) and a nut (901); a valve hole (904) is formed in the side edge of the fixed block (10); a valve rod (903) and a nut (901) are installed in the valve hole (904); a spring (902) is arranged between the valve rod (903) and the nut (901); the valve hole (904) is connected with a low-pressure oil pipe (19).
4. An improved hydraulic wrench as claimed in claim 1 or claim 2, in which: a sealing ring (16) is arranged at the joint of the shell (4) and the high-pressure oil pipe (17) and the low-pressure oil pipe (19) of the fixed block (10); a plurality of sealing rings (16) are arranged at the joint of the fixed block (10) and the rotating body (18); and a plurality of sealing rings (16) are arranged at the joint of the rotating body (18) and the rotating joint (11).
5. An improved hydraulic wrench as claimed in claim 1 or claim 2, in which: a high-pressure oil pipe (17) and a low-pressure oil pipe (19) are arranged in the rotating body (18), the fixed block (10) and the shell (4); and the high-pressure oil pipe (17) and the low-pressure oil pipe (19) are connected with the hydraulic cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921604337.8U CN211306145U (en) | 2019-09-25 | 2019-09-25 | Improved hydraulic wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921604337.8U CN211306145U (en) | 2019-09-25 | 2019-09-25 | Improved hydraulic wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211306145U true CN211306145U (en) | 2020-08-21 |
Family
ID=72064741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921604337.8U Active CN211306145U (en) | 2019-09-25 | 2019-09-25 | Improved hydraulic wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211306145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388140A (en) * | 2022-09-13 | 2022-11-25 | 天津第一机床有限公司 | Ratchet and pawl feeding mechanism with accurate tooth shifting structure |
-
2019
- 2019-09-25 CN CN201921604337.8U patent/CN211306145U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388140A (en) * | 2022-09-13 | 2022-11-25 | 天津第一机床有限公司 | Ratchet and pawl feeding mechanism with accurate tooth shifting structure |
| CN115388140B (en) * | 2022-09-13 | 2023-05-09 | 天津第一机床有限公司 | Ratchet pawl feeding mechanism with accurate tooth shifting structure |
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