CN207736203U - A kind of large-torque hydraulic wrench - Google Patents
A kind of large-torque hydraulic wrench Download PDFInfo
- Publication number
- CN207736203U CN207736203U CN201721796487.4U CN201721796487U CN207736203U CN 207736203 U CN207736203 U CN 207736203U CN 201721796487 U CN201721796487 U CN 201721796487U CN 207736203 U CN207736203 U CN 207736203U
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- China
- Prior art keywords
- spanner
- hydraulic
- torque
- cylinder
- hydraulic cylinder
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- 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.)
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model is related to it is a kind of facilitate adjusting, torque can be accurately controlled, easy to operate, low manufacture cost and with extensive versatility large-torque hydraulic wrench, the spanner of plurality of specifications can be matched, with broad applicability a large amount of expenses are saved without customizing special sleeve spanner；Hydraulic cylinder is connected using single oil pipe, and hydraulic stem piston rod devises extension spring, and after action, piston rod can automatically reset, and improve efficiency；It can be used in the environment of narrow space, Adjustable bracing bar of arranging in pairs or groups is easy for installation；Kit assembles and operation is easy, and manufacturing cost is relatively fewer；It can ensure installation quality by each 5 screw-down torque of nut of oil pressure energy equal control.
Description
Technical field
The utility model is related to a kind of hydraulic spanner field more particularly to it is a kind of facilitate adjusting, can accurately control torque,
Easy to operate, low manufacture cost and the large-torque hydraulic wrench with extensive versatility.
Background technology
It is well known that mechanical equipment is usually all made of having multiple parts to assemble, the most commonly used is using stud
The fastening method of connection.Bolt need to coordinate with nut, so that bolt tension is deformed by tightening nut, and generating enough clamping forces makes
Part is closely adjacent to, to ensure part reliably working under the environment such as dynamic loading, high/low temperature, vibration.
The assembly fastening of large-sized bolt is always a difficult problem of industry generally existing.Common fastening method has greatly
Hammer taps spanner method, hydraulic stretch method, hydraulic spanner method, electrical heating pulling method etc., cuts both ways.Wherein, sledgehammer taps spanner
Method is most traditional fastening method, is not only taken a lot of work laborious, is controlled the pre-fastening moment of the fastening of bolt inaccurate but also uneasy
Entirely.
Hydraulic spanner method is that a kind of more fastening method is used in current industry, its fastening principle and conventional method one
Sample, and generate certain pretightning force by tightening nut.It common are in the market：It is hollow type hydraulic torque wrench, driving
Hydraulic torque wrench, big torsion hydraulic spanner etc., are typically combined with link mechanism by hydraulic device and are constituted, with traditional people
The features such as power method is compared, and has torque big, laborsaving, and installation accuracy is higher.But there is also problems with：Adaptability is poor, by
Space limit, hydraulic spanner be monoblock type, one can only often correspond to spanner the nut using a model specification, such as
Hollow type hydraulic torque wrench, also some hydraulic spanners are only applicable to interior Hexagonal jacket, for some nuts and apparatus body compared with
Close to, such as hubbed flange or equipment or screw rod stretch out it is longer, sleeve just put it is not in place cannot use, for example drive
Ejector half hydraulic torque wrench, big torsion hydraulic spanner etc.；Inconvenient for operation, most of hydraulic spanner is double tube, and use is electronic
High-pressure oil pump is less problematic, but when with manual hydraulic oil pump, and piston rod cannot automatically reset, and two oil pipes need frequently to exchange,
It is troublesome in poeration；The hydraulic torque wrench efficiency of big sized bolt is low, for example, M42 or more bolt, hydraulic spanner is complicated and heavy,
Hanging device is needed, it is inconvenient, for the bolt of small dimension, although hydraulic spanner small volume, inefficient, not as good as leaning on
Manpower can tighten nut, and hydraulic spanner is not just used at this time；It is complicated, it is easily damaged, and repair complexity, it is costly；
It involves great expense, a set of spanner market price will be tens of thousands of, more than 10 ten thousand yuan of expensive needs.
Patent Office of the People's Republic of China disclosed a kind of invention patent mandate of hydraulic spanner, Authorization Notice No. on October 21st, 2015
CN103737524B is used and is set hydraulic cylinder in ontology, reduces the volume of hydraulic spanner, can in more multi-environment middle use, and
And be additionally arranged decompression function, be conducive to manual manipulation, but it is there are still restricted application, integrated design limitation its
The problems such as used nut style.
Utility model content
To solve, the adaptability that above-mentioned hydraulic spanner in the prior art is widely present is poor, limited by space, operate not
The hydraulic torque wrench efficiency of convenient, big sized bolt is low, it is complicated, be easily damaged and repair complicated, costly and cost
The problems such as expensive, provides and a kind of facilitating adjusting, can accurately control torque, is easy to operate, low manufacture cost and with extensive
The large-torque hydraulic wrench of versatility.
To achieve the above object, the utility model uses following technical scheme：
A kind of large-torque hydraulic wrench, including spanner and supporting rod, the spanner handle is equipped with two connecting holes, described
R type connecting rods are equipped between supporting rod and spanner, supporting rod is connect with r type connecting rod short ends, connecting hole and r type length of connecting rod in the middle part of spanner
End connection, r types connecting rod connection is there are one hydraulic cylinder, and long end and one end of hydraulic cylinder connect in r type connecting rods, hydraulic cylinder it is another
One end connects spanner handle end connecting hole.Kit is that multiple components assemble, and the direct use of spanner is common in the market
It is heavy tap double offset ring spanner or open-end wrench, without customizing socket wrench specially adapted for it, can by the different specification size of bolt into
Row is replaced;Can the operation in the environment of narrow space, such as nut circumference narrow space place, open-end wrench can be used.
It is not influenced by screw rod extension elongation.
Preferably, the hydraulic cylinder is divided into cylinder barrel, preceding connector and rear connector, it is equipped between rear connector and cylinder barrel
Cylinder cap, cylinder barrel is interior to be equipped with piston rod, and piston rod is hollow structure, and an extension spring is installed in piston rod.The piston of hydraulic cylinder
Bar is automatically replied by extension spring, more convenient manipulation and improves guarantee it resets complete, is improved work efficiency.
Preferably, the r types connecting rod is connect with supporting rod by pin.Pin is easy to connect to pacify supporting rod
Dress.
Preferably, the supporting rod is spliced by 15~20mm thickness steel plates and 10~12mm steel plates, which is provided with
Multiple pin connection holes.Supporting rod thickness is adjustable with the arm of force, substantially increases its scope of application, can be in narrow environment
Middle use.
Preferably, it is 50~300mm that the middle part connecting hole on the spanner handle, which connect pitch of holes with end,.Spanner adds
If connecting hole is very convenient, it is only necessary to punch, the torque of spanner can be adjusted according to Deutsche industry norm (DIN), generate effective torsion.
Preferably, being set on the preceding connector of the hydraulic cylinder there are one oilhole, oilhole connects hydraulic pump by pipeline.It adopts
With single oil pipe fuel feeding or oil return, as long as two people lift when only needing 2~3 people that all operationss operation can be completed under normal circumstances
Tool, again encapsulation enter nut, it will be able to fast quick-detach or fastening can compare and accurately control torque, pressure gauge is installed on oil pump
And oil pressure control, screw-down torque is accurately controlled by oil pressure, torque repeatable accuracy is up to ± 5%, keeps equipment fastener equal
It is even to tighten, improve assembly precision.
Preferably, the hydraulic pump is preferably the hydraulic pump with manually and automatically two kinds of control models.Automatically it is controlling
MANUAL CONTROL mode can be switched in the case that molding formula is inconvenient to use, increase its use scope.
Preferably, the spanner is any one tapped in spanner or open-end wrench.Tap spanner and open-end wrench
All it is the common spanner type in market, therefore large-torque hydraulic wrench provided by the utility model has very extensive be applicable in
Property.
The utility model has the beneficial effects that：
1）Large-torque hydraulic wrench provided by the utility model can match the spanner of plurality of specifications, have generally applicable
Property, without customizing special sleeve spanner, save a large amount of expenses；
2）Hydraulic cylinder is connected using single oil pipe, and hydraulic stem piston rod devises extension spring, after action, piston
Bar can automatically reset, and improve efficiency；
3）It can be used in the environment of narrow space, Adjustable bracing bar of arranging in pairs or groups is easy for installation；
4）Kit assembles and operation is easy, and manufacturing cost is relatively fewer;
5）It can ensure installation quality by each 5 screw-down torque of nut of oil pressure energy equal control.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of the utility model supporting rod；
Fig. 3 is the side cross-sectional, view of the utility model supporting rod；
Fig. 4 is the schematic diagram of the utility model r type connecting rods；
Fig. 5 is the side cross-sectional, view of the utility model r type connecting rods；
Fig. 6 is the schematic diagram of the utility model hydraulic cylinder；
Fig. 7 is the schematic diagram of connector before the utility model hydraulic cylinder；
Fig. 8 is the side cross-sectional, view of connector before the utility model hydraulic cylinder；
Fig. 9 is the enlarged drawing of part A in Fig. 7；
Figure 10 is the schematic diagram of connector after the utility model hydraulic cylinder；
Figure 11 is the side cross-sectional, view of connector after the utility model hydraulic cylinder；
Wherein, 1 spanner, 101 middle part connecting holes, 102 end connecting holes, 2 supporting rods, 201 pin connection holes, 3 r type connecting rods,
301 r type length of connecting rod ends, long end in 302 r type connecting rods, 303 r type connecting rod short ends, 4 hydraulic cylinders, connector before 401 connect after 402
Junctor, 403 cylinder barrels, 404 cylinder caps, 405 oilholes, 406 piston rods, 407 springs, 408 bayonets, 5 nuts.
Specific implementation mode
It is carried out with reference to the utility model embodiment and Figure of description technical solution in the embodiment of the present invention clear
Chu is fully described by, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole embodiments.Base
In the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There is other embodiment, belongs to the scope of protection of the utility model.
As shown in Figure 1, a kind of high-torque hydraulic pulls 1 hand, including spanner 1 and supporting rod 2,1 handle of the spanner is equipped with
Two connecting holes, are equipped with r types connecting rod 3 between the supporting rod 2 and spanner 1, supporting rod 2 connect with r type connecting rods short end 303, pulls
1 middle part connecting hole 101 of hand is connect with r type length of connecting rod end 301, and the r types connecting rod 3 connection is there are one hydraulic cylinder 4, in r type connecting rods
Long end 302 is connect with one end of hydraulic cylinder 4, and the other end of hydraulic cylinder 4 connects 1 handle end connecting hole 102 of spanner.Kit
It is that multiple components assemble, spanner 1 directly taps double offset ring spanner or open-end wrench using heavy type common in the market, without
Socket wrench specially adapted for it is customized, can be replaced by the different specification size of bolt;Can the operation in the environment of narrow space, than
Such as the place that 5 peripheral space of nut is narrow, open-end wrench can be used.Also it is not influenced by screw rod extension elongation.
Preferably, the hydraulic cylinder 4 divides for cylinder barrel 403, preceding connector 401 and rear connector 402, rear connector 402
It is equipped with cylinder cap 404 between cylinder barrel 403, piston rod 406 is equipped in cylinder barrel 403, piston rod 406 is hollow structure, in piston rod
One extension spring 407 is installed in 406.The piston rod 406 of hydraulic cylinder 4 is automatically replied by extension spring 407, and more convenient manipulation is simultaneously
And improve and ensure that it is resetted completely, it improves work efficiency.
As shown in Figure 1, the r types connecting rod 3 is connect with supporting rod 2 by pin.Pin is easy to connect to carry out supporting rod 2
Installation.
As shown in Figures 1 to 3, the supporting rod 2 is spliced by 15~20mm thickness steel plates and 10~12mm steel plates, thereon
Equipped with multiple pin connection holes 201.2 thickness of supporting rod is adjustable with the arm of force, substantially increases its scope of application, can be narrower
It is used in small environment.
As shown in Fig. 1,4 and 5, middle part connecting hole 101 and 102 spacing of end connecting hole on 1 handle of the spanner are 50
~300mm.It is very convenient that spanner 1 adds connecting hole, it is only necessary to and it punches, the torque of spanner 1 can be adjusted according to Deutsche industry norm (DIN),
Generate effective torsion.
As shown in Fig. 1,6 and 7, set on the preceding connector 401 of the hydraulic cylinder 4 there are one oilhole 405, oilhole 405 passes through
Pipeline connects hydraulic pump.Using single oil pipe fuel feeding or oil return, only need 2~3 people that all operationss work can be completed under normal circumstances
As long as two people lift tool when industry, encapsulation enters nut 5 again, it will be able to which fast quick-detach or fastening can compare and accurately control torsion
Square, installation pressure gauge and oil pressure control on oil pump accurately control screw-down torque by oil pressure, torque repeatable accuracy up to ±
5%, so that equipment fastener is uniformly tightened, improves assembly precision.
The hydraulic pump is preferably the hydraulic pump with manually and automatically two kinds of control models.It is not square in automatic control mode
Just MANUAL CONTROL mode can be switched in the case of use, increase its use scope.
The spanner 1 is any one tapped in spanner or open-end wrench.It is all market to tap spanner and open-end wrench
1 type of common spanner, therefore high-torque hydraulic provided by the utility model pulls 1 hand with very extensive applicability.
As shown in figs. 7-9, the connection of itself and cylinder barrel 403 can be improved in 401 inner bayonet 408 of connector before when hydraulic cylinder 4 is installed
Stability leads to 4 pressure leakage of hydraulic cylinder when preventing hydraulic pump from applying intensified pressure suddenly to it.
As shown in Figure 10~11, rear connector 402 be double-layer structure, can lifting hydraulic cylinder 4 mounting stability.
In use, the specification size selection for the nut 5 dismantled on demand taps spanner, and it is assembled on hydraulic cylinder 4, uses pin
Son is reliably connected, and hydraulic spanner 1 is mounted on and is needed on dismounting or the nut 5 fastened, 2 length of supporting rod is adjusted, and it is suitable to find
Position secure support, prevent from skidding, connect oil pump, the oilhole on hydraulic cylinder 4 is connected to the quick coupling of high-pressure oil pipe
405, oil pressure adjusting valve（Overflow valve）It is adjusted to the scale of setting, opens oil pump return valve, starts oil pump, slowly closing reflux
Valve increases oil pressure, and piston rod 406 is ejected forward under the action of oil pressure, under the collective effect of r types connecting rod 3 and supporting rod 2,
It pushes and taps spanner, nut 5 rotates, and when oil pressure reaches the oil pressure of calculated in advance setting, that is, is automatically stopped pressurization, illustrates at this time
It has reached and needs torque, close oil pump, after waiting piston rods 406 to reset, integrally lift hydraulic spanner 1, replacing angle will strike again
It hits spanner and puts into nut 5, continue to dismantle or tighten, until fulfiling assignment.
Hydraulic spanner 1 can generate great torsion, and the design uses torque estimation algorithm, in order to determine various specifications nut 5
Required torque, the utility model Primary Reference Deutsche industry norm (DIN), screw-down torque be standard in numerical value ×（70~
80）% dismantles 1.5~2 times that power is coupling mechanism force, thus can efficiently dismount nut 5, time saving and energy saving, greatly improves work
Efficiency.
Claims (8)
1. a kind of large-torque hydraulic wrench, including spanner（1）And supporting rod（2）, which is characterized in that the spanner（1）On handle
If there are two connecting hole, the supporting rod（2）With spanner（1）Between be equipped with r type connecting rods（3）, supporting rod（2）It is short with r type connecting rods
End（303）Connection, spanner（1）Middle part connecting hole（101）With r type length of connecting rod end（301）Connection, the r types connecting rod（3）It is connected with
One hydraulic cylinder（4）, long end in r type connecting rods（302）With hydraulic cylinder（4）One end connection, hydraulic cylinder（4）The other end connection pull
Hand（1）Handle end connecting hole（102）.
2. a kind of large-torque hydraulic wrench according to claim 1, which is characterized in that the hydraulic cylinder（4）It is divided into cylinder barrel
（403）, preceding connector（401）With rear connector（402）, rear connector（402）With cylinder barrel（403）Between be equipped with cylinder cap（404）,
Cylinder barrel（403）It is interior to be equipped with piston rod（406）, piston rod（406）For hollow structure, in piston rod（406）Interior installation one stretches bullet
Spring（407）.
3. a kind of large-torque hydraulic wrench according to claim 1 or 2, which is characterized in that the r types connecting rod（3）With branch
Strut（2）It is connected by pin.
4. a kind of large-torque hydraulic wrench according to claim 1 or 2, which is characterized in that the supporting rod（2）By 15~
20mm thickness steel plates and 10~12mm steel plates are spliced into, and which is provided with multiple pin connection holes（201）.
5. a kind of large-torque hydraulic wrench according to claim 1 or 2, which is characterized in that the spanner（1）On handle
Middle part connecting hole（101）With end connecting hole（102）Spacing is 50~300mm.
6. a kind of large-torque hydraulic wrench according to claim 2, which is characterized in that the hydraulic cylinder（4）Preceding connection
Body（401）On set there are one oilhole（405）, oilhole（405）Hydraulic pump is connected by pipeline.
7. a kind of large-torque hydraulic wrench according to claim 6, which is characterized in that the hydraulic pump be with manually and
The hydraulic pump of automatic two kinds of control models.
8. a kind of large-torque hydraulic wrench according to claim 1 or 2, which is characterized in that the spanner（1）It is pulled to tap
Any one in hand or open-end wrench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721796487.4U CN207736203U (en) | 2017-12-20 | 2017-12-20 | A kind of large-torque hydraulic wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721796487.4U CN207736203U (en) | 2017-12-20 | 2017-12-20 | A kind of large-torque hydraulic wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207736203U true CN207736203U (en) | 2018-08-17 |
Family
ID=63118806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721796487.4U Expired - Fee Related CN207736203U (en) | 2017-12-20 | 2017-12-20 | A kind of large-torque hydraulic wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207736203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109129285A (en) * | 2018-10-30 | 2019-01-04 | 重庆特通阀门有限公司 | A kind of hydraulic spanner |
| CN110091277A (en) * | 2019-06-04 | 2019-08-06 | 青岛黄海学院 | Multifunctional telescopic hydraulic wrench |
-
2017
- 2017-12-20 CN CN201721796487.4U patent/CN207736203U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109129285A (en) * | 2018-10-30 | 2019-01-04 | 重庆特通阀门有限公司 | A kind of hydraulic spanner |
| CN110091277A (en) * | 2019-06-04 | 2019-08-06 | 青岛黄海学院 | Multifunctional telescopic hydraulic wrench |
| CN110091277B (en) * | 2019-06-04 | 2020-11-27 | 青岛黄海学院 | Multifunctional telescopic hydraulic wrench |
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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: 20180817 Termination date: 20201220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |