CN203665410U - Hollow hydraulic wrench - Google Patents
Hollow hydraulic wrench Download PDFInfo
- Publication number
- CN203665410U CN203665410U CN201420021569.1U CN201420021569U CN203665410U CN 203665410 U CN203665410 U CN 203665410U CN 201420021569 U CN201420021569 U CN 201420021569U CN 203665410 U CN203665410 U CN 203665410U
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- CN
- China
- Prior art keywords
- ratchet
- piston rod
- oil cylinder
- fine
- ratchet wheel
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- Expired - Fee Related
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses a hollow hydraulic wrench. The hollow hydraulic wrench comprises a rotating joint, an oil cylinder, a piston rod, a hook head, two baffles, a force transmission plate, a fine-tooth ratchet wheel, a pawl, a spring and a hinge pin. The rotating joint is communicated with the oil cylinder, the piston rod is arranged inside the oil cylinder, and the hook head is in threaded connection with one end of the piston rod. The force transmission plate is positioned through the fine-tooth ratchet wheel, the hook head and the hinge pin. The fine-tooth ratchet wheel is arranged on the force transmission plate, a groove is formed in the position, close to the upper portion of the force transmission plate, of the force transmission plate, and the pawl is arranged in the groove. One end of the pawl is meshed with the fine-tooth ratchet wheel in a multi-tooth mode, and the other end of the pawl tightly presses the wall of the groove through the spring. The two baffles are fixed by screws and resilient pins through a cushion block and a counter-force arm. According to the hollow hydraulic wrench, the 'clamping' phenomenon is avoided, the structure is simple and convenient, manufacture is relatively easy, production cost is lowered, by the adoption of the fine-tooth ratchet wheel, strength is high, torque output precision is high, transmission efficiency is high, and the fault rate is lowered.
Description
Technical field
The utility model belongs to maintenance of equipment technical field, is specifically related to a kind of hollow type hydraulic spanner.
Background technology
When each overhaul of the equipments, all can carry out fastening or dismounting to the connecting bolt at maintenance position, use common wrench to carry out manual operation, workload is larger, and some larger bolts, as continuous casting segment set bolt, the Converter bolt that inclines, because of its size large, space is little, and quantity is many, does not overhaul for a long time and has occurred the phenomenon of getting rusty, use general tool artificial unloading or fastening more difficult, transmission accuracy is low, efficiency is also lower.
At present, also occurred some hollow type hydraulic spanners, its control procedure is such: piston rod drives gib head motion, gib head promotes inner pushing plate and rotates, spring-compressed ratchet, and ratchet coordinates with the single tooth of bastard ratchet, under the promotion of ratchet, thereby ratchet rotation screws or dismantles nut.When piston rod backhaul, for preventing that ratchet from reversing, and arranges lock pawl on ratchet side.At work, often can run into owing to will discharging after bolt and nut strain, cause lock pawl and ratchet to take off not open the phenomenon that spanner be cannot take out, at this moment, need to be pressed onto and to be greater than the pressure setting on pump, pull lock pawl and just can deal with problems.And transmission accuracy and efficiency will differ from, structure is comparatively complicated.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of hollow type hydraulic spanner, eliminates " stuck phenomenon ", features simple structure, manufactures relatively simply, reduces production costs, and adopts serration ratchet, and intensity is high, and transmission accuracy, efficiency are high, reduce fault rate.
For solving the problems of the technologies described above, the utility model provides a kind of hollow type hydraulic spanner, it comprises swivel joint, oil cylinder, piston rod, gib head, two baffle plates, force transmitting board, serration ratchet, ratchet, spring and bearing pins, swivel joint is communicated with oil cylinder, piston rod is arranged on oil cylinder inside, and gib head is connected with piston rod threaded one end; Described force transmitting board is located by serration ratchet, gib head, bearing pin, serration ratchet is arranged on force transmitting board, and the place that force transmitting board gets close to serration ratchet top has groove, and ratchet is arranged in this groove, engage with serration ratchet is multiple tooth one end, and the other end is by spring compression cell wall; Two gears are pulled by cushion block and counter-force arm screw and resilient key and are fixed.
Hydraulic pump hydraulic oil out enters the rodless cavity of piston by swivel joint, promote piston and move right, and the fluid of rod chamber returns pumping plant fuel tank from swivel joint; Gib head promotes force transmitting board simultaneously, and force transmitting board promotes ratchet, and ratchet promotes ratchet, and ratchet promotes bolt and nut and rotates; In the time of piston arrives limit on the left, pumping plant commutation, rod chamber comes oily, rodless cavity oil return, piston moves right, and drives force transmitting board and ratchet to move right by gib head and bearing pin, so repeatedly, thus the object that has reached tools for bolts ' pretension or dismantled.
A kind of hollow type hydraulic spanner the utility model proposes, eliminates " stuck phenomenon ", features simple structure, manufactures relatively simply, reduces production costs, and adopts serration ratchet, and intensity is high, and transmission accuracy, efficiency are high, have reduced fault rate.
Accompanying drawing explanation
Fig. 1 is the hollow type hydraulic spanner structural representation in background technology.
A kind of hollow type hydraulic spanner structural representation that Fig. 2 proposes for the utility model.
The specific embodiment
Referring to accompanying drawing 1, in background technology, hollow type hydraulic spanner, its control procedure is such: piston rod drives gib head motion, and gib head promotes inner pushing plate 11 and rotates, spring-compressed ratchet, ratchet coordinates with the single tooth of bastard ratchet, and under the promotion of ratchet, thereby ratchet rotation screws or dismantle nut.When piston rod backhaul, on ratchet side, lock pawl 12 is set for preventing that ratchet from reversing.At work, often can run into owing to will discharging after bolt and nut strain, cause lock pawl and ratchet to take off not open the phenomenon that spanner be cannot take out, at this moment, need to be pressed onto and to be greater than the pressure setting on pump, pull lock pawl and just can deal with problems.And transmission accuracy and efficiency will differ from, structure is comparatively complicated.
Referring to accompanying drawing 2, the utility model propose a kind of hollow type hydraulic spanner, it comprises swivel joint 1, oil cylinder 3, piston rod 2, gib head 4, baffle plate 5, force transmitting board 6, serration ratchet 7, ratchet 8, spring 9 and bearing pin 10, swivel joint is communicated with oil cylinder, piston rod is arranged on oil cylinder inside, and gib head is connected with piston rod one end retaining thread; Described force transmitting board is located by serration ratchet, gib head, bearing pin, serration ratchet is arranged on force transmitting board, and the place that force transmitting board gets close to serration ratchet top has groove, and ratchet is arranged in this groove, engage with serration ratchet is multiple tooth one end, and the other end is by spring compression cell wall; Two gears are pulled by cushion block 13 and counter-force arm 14 use screws and resilient key and are fixed.
Hydraulic pump hydraulic oil out enters the rodless cavity of piston by swivel joint, promote piston and move right, and the fluid of rod chamber returns pumping plant fuel tank from swivel joint; Gib head promotes force transmitting board simultaneously, and force transmitting board promotes ratchet, and ratchet promotes ratchet, and ratchet promotes bolt and nut and rotates; In the time of piston arrives limit on the left, pumping plant commutation, rod chamber comes oily, rodless cavity oil return, piston moves right, and drives force transmitting board and ratchet to move right by gib head and bearing pin, so repeatedly, thus the object that has reached tools for bolts ' pretension or dismantled.
A kind of hollow type hydraulic spanner the utility model proposes, eliminates " stuck phenomenon ", features simple structure, manufactures relatively simply, reduces production costs, and adopts serration ratchet, and intensity is high, and transmission accuracy, efficiency are high, have reduced fault rate.
Claims (1)
1. a hollow type hydraulic spanner, it comprises swivel joint, oil cylinder, piston rod, gib head, two baffle plates, force transmitting board, serration ratchet, ratchet, spring and bearing pins, swivel joint is communicated with oil cylinder, and piston rod is arranged on oil cylinder inside, and gib head is connected with piston rod threaded one end; Described force transmitting board is located by serration ratchet, gib head, bearing pin, serration ratchet is arranged on force transmitting board, and the place that force transmitting board gets close to serration ratchet top has groove, and ratchet is arranged in this groove, engage with serration ratchet is multiple tooth one end, and the other end is by spring compression cell wall; Two gears are pulled by cushion block and counter-force arm screw and resilient key and are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420021569.1U CN203665410U (en) | 2014-01-15 | 2014-01-15 | Hollow hydraulic wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420021569.1U CN203665410U (en) | 2014-01-15 | 2014-01-15 | Hollow hydraulic wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203665410U true CN203665410U (en) | 2014-06-25 |
Family
ID=50961743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420021569.1U Expired - Fee Related CN203665410U (en) | 2014-01-15 | 2014-01-15 | Hollow hydraulic wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203665410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753466A (en) * | 2014-01-15 | 2014-04-30 | 马鞍山市三江机械有限公司 | Hollow hydraumatic spanner |
-
2014
- 2014-01-15 CN CN201420021569.1U patent/CN203665410U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753466A (en) * | 2014-01-15 | 2014-04-30 | 马鞍山市三江机械有限公司 | Hollow hydraumatic spanner |
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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: 20140625 Termination date: 20180115 |