CN203765263U - Pressing machine - Google Patents
Pressing machine Download PDFInfo
- Publication number
- CN203765263U CN203765263U CN201420181466.1U CN201420181466U CN203765263U CN 203765263 U CN203765263 U CN 203765263U CN 201420181466 U CN201420181466 U CN 201420181466U CN 203765263 U CN203765263 U CN 203765263U
- Authority
- CN
- China
- Prior art keywords
- hole
- cylinder body
- medium
- pressing machine
- piston rod
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a pressing machine which comprises a power element, a connection sleeve, a hollow telescopic cylinder and a direction control valve. The power element comprises a hydraulic pump or a gas compressor, the connection sleeve is used for being in threaded connection with the end of a gear hub, the hollow telescopic cylinder is arranged on the connection sleeve, the extending end of a piston rod of the cylinder abuts against the end face of a chain wheel hub to limit axial displacement of the chain wheel hub away from the gear hub, and the direction control valve is disposed between the power element and a first medium cavity and a second medium cavity of the telescopic cylinder to control the power element to be communicated with the first medium cavity and the second medium cavity. Compared with the prior art, pressing taper match of the gear hub and the chain wheel hub is achieved through the pressing machine, assembly efficiency is remarkably improved, labor intensity of operators is remarkably reduced, particularly, pressing force can meet the requirement of the assembly process as much as possible by controlling the pressure of media in a pressure circuit, and accordingly transmission stability and safety of a final transmission system of a bulldozer can be improved.
Description
Technical field
The utility model relates to the technology of pressure mounting field of bulldozer final drive system middle gear hub and sprocket hub, particularly a kind of pressing machine.
Background technology
As shown in Figure 1, bull-dozer transmission mechanism comprise decelerator, differential mechanism, gear hub 1 ', sprocket hub 2 ' and crawler belt.The power of engine via decelerator, differential mechanism be passed to gear hub 1 ', gear hub 1 ' by left bearing 3 ' and right bearing 4 ' be connected in rotationally differential mechanism semiaxis 5 ' on.Gear hub 1 ' and sprocket hub 2 ' press-fit cooperation by suitable cone spline, sprocket hub 2 ' with gear hub 1 ' rotate and drive crawler belt to rotate, to realize bull-dozer walking.
Tradition press-fits in assembly technology, first, adopt gear-broach machine to gear hub 1 ' and sprocket hub 2 ' pairing draw after tooth; Then, by both separately and by gear hub 1 ' by bearing be installed on semiaxis 5 '; Again by sprocket hub 2 ' be sheathed on gear hub 1 ' and complete the pre-engagement of interior outer cone spline; Finally, gear hub 1 ' external part mounting nuts, and by artificial adjustment screw thread with respect to gear hub 1 ' screwing length adjust both thrust that press-fits.
Obviously, in above-mentioned traditional press-loading process by manually completing, there is large, the ineffective problem of labour intensity in a plurality of operations.Especially adopt artificial adjustment thrust to be difficult for reaching the setting thrust of assembly technology designing requirement, and thrust does not reach assembly technology requirement, will have influence on transmission stability and the reliability of whole transmission system.
In view of this, how laborsaving, efficiently and accurately to realize gear hub and sprocket hub press-loading process, is those skilled in the art's technical problems urgently to be resolved hurrily.
Utility model content
For above-mentioned defect, the utility model provides a kind of pressing machine, with laborsaving, efficiently and accurately realize press-fiting of gear hub and sprocket hub.
To achieve these goals, the utility model provides a kind of pressing machine, for press-fiting gear hub and the sprocket hub of bulldozer final drive mechanism, comprising:
Adapter sleeve, for being connected with the end thread of described gear hub;
Dynamical element, comprises hydraulic pump or gas compressor;
The telescoping cylinder of hollow, is sheathed on described adapter sleeve, and its piston rod external part can offset with the end face of described sprocket hub, to limit described sprocket hub along the axial displacement departing from described gear hub;
Directional control valve, is arranged between the first medium chamber and second medium chamber of described dynamical element and described telescoping cylinder, to control described dynamical element, is communicated with described first medium chamber or described second medium chamber.
Preferably, described telescoping cylinder comprises cylinder body and described piston rod, and described cylinder body has shoulder hole, and described shoulder hole comprises that the diameter of at least three sector holes and interstitial hole is greater than the diameter of left hole and right ports; Described piston rod is specially the multidiameter of hollow, and described multidiameter comprises that the diameter of at least three sections of axles and jackshaft is greater than the diameter of left-hand axis and right-hand axis, and described piston rod is sheathed on described adapter sleeve slidably;
Described jackshaft and described interstitial hole, described left-hand axis and described left hole, described right-hand axis and the equal slipper seal of described right ports are connected to form described first medium chamber and described second medium chamber; Described cylinder body offers first medium runner and second medium runner, and described first medium runner is communicated with described first medium chamber, and described second medium runner is communicated with described second medium chamber.
Preferably, described cylinder body comprises the first cylinder body and the second cylinder body being fixedly connected with, and in described the first cylinder body and described the second cylinder body, one has described left hole and described interstitial hole, and another one has described right ports; Described the first cylinder body and described the second cylinder body offer respectively described first medium runner and described second medium runner.
Preferably, in three groups of described left-hand axis and described left hole, described jackshaft and described interstitial hole and described right-hand axis and described right ports at least one group by the slipper seal of " Y " font axial seal, be connected.
Preferably, described directional control valve is specially three position four-way directional control valve, and the first working hole of described three position four-way directional control valve is communicated with described dynamical element, the second working hole is medium back flow mouth, the 3rd actuator port is communicated with described first medium chamber, the 4th actuator port is communicated with described second medium chamber;
Described three position four-way directional control valve is positioned at left position, described the first actuator port and described the 4th actuator port conducting, described the second working hole and described the 3rd working hole conducting; Be positioned at meta, described the first working hole, described the second working hole, described the 3rd working hole are all closed; Be positioned at right position, described the first working hole and described the 3rd working hole conducting, described the second working hole and described the 4th working hole conducting.
Preferably, also comprise pressure sensing cell, described pressure sensing cell is arranged between described directional control valve and described dynamical element or described telescoping cylinder, with the pressure medium in detected pressures loop.
Preferably, also comprise axial limiting mechanism, described axial limiting mechanism is fixedly connected on described adapter sleeve end, to limit described cylinder body with respect to the axial displacement of described piston rod.
Preferably, described axial limiting mechanism comprises, the first platen and nut, and described the first platen is sheathed on described adapter sleeve and fits with the end face of described telescoping cylinder, and described nut is connected with the end of described adapter sleeve and fits with the end face of described the first platen.
Preferably, also comprise the second platen, described the second platen is sheathed on the external part of described piston rod, and described piston rod coordinates with the end face of described sprocket hub by described the second platen.
Pressing machine provided by the utility model, comprises telescoping cylinder and the directional control valve of dynamical element, adapter sleeve, hollow, and wherein, dynamical element comprises hydraulic pump or gas compressor; Adapter sleeve is for being connected with the end thread of gear hub; Telescoping cylinder is sheathed on adapter sleeve, and its piston rod external part can offset with the axial end of sprocket hub, to limit sprocket hub along the axial displacement departing from gear hub; Directional control valve, is arranged between the first medium chamber and second medium chamber of dynamical element and telescoping cylinder, to control dynamical element, is communicated with first medium chamber or second medium chamber.
The operation principle of above-mentioned pressing machine is, adapter sleeve is threaded connection to the end of being fixed on gear hub, then controls directional control valve and control dynamical element piston rod and stretch out, and external part promotes sprocket hub and moves to vertically and press-fit in gear hub; Reach and set after thrust, control telescoping cylinder and retract, then adapter sleeve is removed by gear hub.
The pressing machine of this programme adopts adapter sleeve to be equipped with hydraulic control system or pneumatic control system, and that has realized gear hub and sprocket hub press-fits taper fit relation.Compare with existing manual assembly technique, efficiency of assembling is significantly improved, operator's labour intensity obviously reduces, especially by pressure medium in controlled pressure loop, making both press-fit thrust meets as much as possible assembly technology requirement, can improve transmission stability and the security of bulldozer final drive system.
Accompanying drawing explanation
Fig. 1 shows the assembly structural representation of bulldozer final drive mechanism middle gear hub and sprocket hub;
Fig. 2 shows the structural representation of the specific embodiment of the pressing machine course of work provided by the utility model;
Fig. 3 shows the local enlarged diagram in A place in Fig. 2;
Fig. 4 shows the hydraulic principle schematic diagram of pressing machine described in Fig. 2.
Corresponding relation in Fig. 1 between Reference numeral and all parts title:
1 ' gear hub, 1 ' sprocket hub, 3 ' left bearing, 4 ' right bearing, 5 ' semiaxis.
Corresponding relation in Fig. 2 to Fig. 4 between Reference numeral and all parts title:
1 gear hub, 2 sprocket hubs, 3 adapter sleeves, 4 hydraulic pumps, 5 telescoping cylinders, 51 first cylinder bodies, 52 second cylinder bodies, 53 piston rods, 54 " Y " font axial seal, a first medium chamber, b second medium chamber, 6 directional control valves, 7 hydraulic oil containers, 8 pressure sensing cells, 9 first platens, 10 nuts, 11 second platens.
The specific embodiment
Core object of the present utility model is, a kind of pressing machine is provided, and makes adapter sleeve be fixedly connected with hydraulic pressure or air pressure with gear hub again and controls telescoping cylinder flexible that is sheathed on adapter sleeve, efficient, laborsaving and complete accurately the press-loading process of sprocket hub and gear hub.
Now, in conjunction with Figure of description, a kind of specific embodiment of pressing machine that the utility model provides is described.It should be noted that, in this programme, the mentioned noun of locality " left side " " right side " is all that the Fig. 2 of take in Figure of description sets as benchmark, and therefore the appearance of the above-mentioned noun of locality does not limit protection domain of the present utility model.
Refer to Fig. 2, Fig. 2 shows the structural representation of the specific embodiment of the pressing machine course of work provided by the utility model.
As shown in Figure 2, the pressing machine that this programme provides, comprises telescoping cylinder 5 and the directional control valve 6 of dynamical element, adapter sleeve 3, hollow, and wherein, dynamical element comprises hydraulic pump 4 or gas compressor; Adapter sleeve 3 is for being connected with the end thread of gear hub 1; The telescoping cylinder of hollow is sheathed on adapter sleeve 3, and its piston rod 53 external parts can offset with the axial end of sprocket hub 2, to limit sprocket hub 2 along departing from the axial displacement of gear hub 1; Directional control valve 6 is arranged between the first medium chamber a and second medium chamber b of dynamical element and telescoping cylinder 5, to control dynamical element, is communicated with first medium chamber a or second medium chamber b.
The operation principle of above-mentioned pressing machine is, adapter sleeve 3 is threaded connection to the end of being fixed on gear hub 1, then controls directional control valve 6 and control dynamical element piston rod 53 and stretch out, and external part promotes sprocket hub 2 and moves to vertically and press-fit in gear hub 1; Reach and set after thrust, control telescoping cylinder 5 and retract, then adapter sleeve 3 is removed by gear hub 1.
The pressing machine of this programme adopts adapter sleeve 3 to be equipped with hydraulic control system or pneumatic control system, and that has realized gear hub 1 and sprocket hub 2 press-fits taper fit relation.Compare with existing manual assembly technique, efficiency of assembling is significantly improved, operator's labour intensity obviously reduces, especially by pressure medium in controlled pressure loop, making both press-fit thrust meets as much as possible assembly technology requirement, can improve transmission stability and the security of bulldozer final drive system.
Now take Hydraulic Power Transmission System as example, concrete structure and the control principle thereof of pressing machine in books scheme is described.It should be noted that, the similarities and differences of hydraulic control system and pneumatic control system is those skilled in the art's common practise, in actual applications Hydraulic Elements and hydraulic circuit is replaced into respectively correspondingly to pneumatic element and pneumatic circuit and is combined and can realize identical function.And substitute mode is between the two prior art, those skilled in the art can realize completely based on prior art, so do not repeat them here.
As shown in Figure 4, the figure shows the hydraulic principle figure of pressing machine shown in Fig. 2, particularly, Hydraulic Power Transmission System at least comprise hydraulic pump 4, telescoping cylinder 5, directional control valve 6 and, hydraulic oil container 7, wherein, the oil-in of hydraulic pump 4 is communicated with hydraulic oil container 7, directional control valve 6 is specially three position four-way directional control valve, and the first working hole of three position four-way directional control valve is communicated with hydraulic pump 4, the second working hole is that medium (fluid) refluxing opening is communicated with hydraulic oil container 7, the 3rd working hole is communicated with first medium chamber a, the 4th actuator port is communicated with second medium chamber b;
When three position four-way directional control valve is positioned at left position, the first working hole and the 4th working hole conducting, the second working hole and the 3rd working hole conducting; Be positioned at meta, the first working hole, the second working hole, the 3rd working hole are all closed; Be positioned at right position, the first working hole and the 3rd working hole conducting, the second working hole and the 4th working hole conducting.
It should be noted that, in this programme, adopt three position four-way directional control valve to control at any time telescoping cylinder according to erecting yard real work situation and stop action, once meet accident, can cut off in time oil circuit, thereby can improve processing safety and the reliability of erecting yard.Certainly, meeting on the piston rod 53 Telescopic bases of directional control valve 6 control telescoping cylinders 5, this directional control valve 6 also can adopt two position and four-way reversing valves or other structure direction control valves 6.In addition, in this programme, directional control valve 6 adopts manual control mode, is appreciated that directional control valve 6 also can adopt the conventional electromagnetism in this area or hydraulic control mode.
Further, be also provided with pressure sensing cell 8 in this programme, this pressure sensing cell 8 is arranged between directional control valve 6 and hydraulic pump 4 or telescoping cylinder, to detect real medium pressure in hydraulic circuit or pneumatic circuit.Operator can adjust according to pressure medium the output pressure of hydraulic pump 4, to meet the thrust of setting in technological procedure, so that thrust approaches setting value as much as possible, thereby actual interference fit and the theoretical value of gear hub 1 and sprocket hub 2 is close.
Next, in conjunction with Fig. 2 and Fig. 3, telescoping cylinder and adapter sleeve 3 concrete structure separately in this programme are described respectively, and assembly relation between the two, wherein, Fig. 3 shows the local enlarged diagram in A place of Fig. 2.
As shown in Figure 3, telescoping cylinder comprises cylinder body and piston rod 53, and cylinder body has shoulder hole, and shoulder hole comprises that the diameter of at least three sector holes and interstitial hole is greater than the diameter of left hole and right ports; Piston rod 53 is specially hollow multidiameter, and this multidiameter comprises that the diameter of at least three sections of axles and jackshaft is greater than the diameter of left-hand axis and right axle, and piston rod 53 is sheathed on adapter sleeve 3 slidably.
Wherein, jackshaft and interstitial hole, left hole and left-hand axis, right ports and right-hand axis slipper seal are connected to form first medium chamber a and second medium chamber b, and on cylinder body, offer first medium passage and second medium passage, first medium passage is communicated with first medium chamber a, and second medium passage is communicated with second medium chamber b.
Particularly, cylinder body comprises the first cylinder body 51 and the second cylinder body 52 being fixedly connected with, and in both, one has left hole and interstitial hole, and another one has right ports; The first cylinder body 51 and the second cylinder body 52 offer respectively first medium runner and second medium runner.
Above-mentioned telescoping cylinder is simple in structure, compact, rationally distributed, processing technology is simple.Be appreciated that satisfied and coordinate with adapter sleeve 3 and its piston rod 53 is moved axially with respect to adapter sleeve 3 on the basis of function, other structures that this telescoping cylinder also can adopt this area to adopt.
It should be noted that, in three groups of the left-hand axis of said structure telescoping cylinder and left hole, jackshaft and interstitial hole and right-hand axis and right ports, realize slipper seal and be connected at least one group by " Y " font axial seal 54, the openend of " Y " font axial seal 54 is towards medium one side.
This programme utilizes the strong feature of " Y " font axial seal sealing property, be appreciated that, meeting on the basis of cylinder body be slidably matched sealing intensity requirement and assembly technology requirement between face corresponding to piston rod 53, both by slipper seal other seals or the hermetically-sealed construction that also can adopt those skilled in the art to commonly use.
Further, concrete structure based on telescoping cylinder in this programme, be that telescoping cylinder is sheathed on adapter sleeve 3 slidably by piston rod 53, after first medium chamber a or second medium chamber b are communicated with dynamical element, for fear of cylinder body, under pressure medium effect, with respect to piston rod 53, endwisely slip, and make telescoping cylinder disabler.In this programme, also comprise axial limiting mechanism, this axial limiting mechanism is fixedly connected on the end of adapter sleeve 3, to limit cylinder body with respect to piston rod 53 axial displacements.
Particularly, this axial limiting mechanism comprises the first platen 9 and nut 10, and wherein, the first platen 9 is sheathed on the left side laminating of adapter sleeve 3 left cylinder, and nut 10 screws with the end of adapter sleeve 3 and fits with the left side of the first platen 9.
The axial limiting mechanism of said structure is simple in structure, certainly, meeting on the basis of axial limiting function, also can adopt the axial limiting mechanism of other structures.
In addition, it should be noted that, the pressing machine in this programme also comprises that the second platen 11, the second platens 11 are sheathed and is fixedly connected on the external part of piston rod 53, and piston rod 53 offsets by the second platen 11 and the end face of sprocket hub 2.Be appreciated that, based on gear hub 1 and sprocket hub 2 structures and assembling characteristics, this programme is realized the end face matching relationship of piston rod 53 and sprocket hub 2 by the second platen 11, thereby can reduce the radial dimension of piston rod 53, so reduced telescoping cylinder overall volume, make it possess miniaturization and light-weighted feature.
Certainly, meeting on the end face matching relationship functional requirement basis of piston rod 53 and sprocket hub 2, piston rod 53 can directly coordinate with sprocket hub 2 end faces.
The foregoing is only preferred embodiment of the present utility model, do not form the restriction to the utility model protection domain.Any any modification of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present utility model.
Claims (9)
1. a pressing machine, for press-fiting gear hub (1) and the sprocket hub (2) of bulldozer final drive mechanism, is characterized in that, comprising:
Adapter sleeve (3), for being connected with the end thread of described gear hub (1);
Dynamical element, comprises hydraulic pump (4) or gas compressor;
The telescoping cylinder of hollow (5), is sheathed on described adapter sleeve (3), and its piston rod (53) external part can offset with the end face of described sprocket hub (2), to limit described sprocket hub (2) along departing from the axial displacement of described gear hub (1);
Directional control valve (6), is arranged between the first medium chamber (a) and second medium chamber (b) of described dynamical element and described telescoping cylinder (5), to control described dynamical element, is communicated with described first medium chamber (a) or described second medium chamber (b).
2. pressing machine as claimed in claim 1, it is characterized in that, described telescoping cylinder (5) comprises cylinder body and described piston rod (53), and described cylinder body has shoulder hole, and described shoulder hole comprises that the diameter of at least three sector holes and interstitial hole is greater than the diameter of left hole and right ports; Described piston rod (53) is specially the multidiameter of hollow, and described multidiameter comprises that the diameter of at least three sections of axles and jackshaft is greater than the diameter of left-hand axis and right-hand axis, and described piston rod (53) is sheathed on described adapter sleeve (3) slidably;
Described jackshaft and described interstitial hole, described left-hand axis and described left hole, described right-hand axis and the equal slipper seal of described right ports are connected to form described first medium chamber (a) and described second medium chamber (b); Described cylinder body offers first medium runner and second medium runner, and described first medium runner is communicated with described first medium chamber (a), and described second medium runner is communicated with described second medium chamber (b).
3. pressing machine as claimed in claim 2, it is characterized in that, described cylinder body comprises the first cylinder body (51) and the second cylinder body (52) being fixedly connected with, in described the first cylinder body (51) and described the second cylinder body (52), one has described left hole and described interstitial hole, and another one has described right ports; Described the first cylinder body (51) and described the second cylinder body (52) offer respectively described first medium runner and described second medium runner.
4. pressing machine as claimed in claim 3, it is characterized in that, in three groups of described left-hand axis and described left hole, described jackshaft and described interstitial hole and described right-hand axis and described right ports, at least one group is connected by " Y " font axial seal (54) slipper seal.
5. pressing machine as described in any one in claim 1 to 4, it is characterized in that, described directional control valve (6) is specially three position four-way directional control valve, and the first working hole of described three position four-way directional control valve is communicated with described dynamical element, the second working hole is medium back flow mouth, the 3rd actuator port is communicated with described first medium chamber (a), the 4th actuator port is communicated with described second medium chamber (b);
Described three position four-way directional control valve is positioned at left position, described the first actuator port and described the 4th actuator port conducting, described the second working hole and described the 3rd working hole conducting; Be positioned at meta, described the first working hole, described the second working hole, described the 3rd working hole are all closed; Be positioned at right position, described the first working hole and described the 3rd working hole conducting, described the second working hole and described the 4th working hole conducting.
6. pressing machine as claimed in claim 5, it is characterized in that, also comprise pressure sensing cell (8), described pressure sensing cell (8) is arranged between described directional control valve (6) and described dynamical element or described telescoping cylinder (5), with the pressure medium in detected pressures loop.
7. the pressing machine as described in any one in claim 2 to 4, it is characterized in that, also comprise axial limiting mechanism, described axial limiting mechanism is fixedly connected on described adapter sleeve (3) end, to limit described cylinder body with respect to the axial displacement of described piston rod (53).
8. pressing machine as claimed in claim 7, it is characterized in that, described axial limiting mechanism comprises, the first platen (9) and nut (10), described the first platen (9) is sheathed on described adapter sleeve (3) and fits with the end face of described telescoping cylinder, and described nut (10) is connected with the end of described adapter sleeve (3) and fits with the end face of described the first platen (9).
9. the pressing machine as described in any one in claim 1 to 4, it is characterized in that, also comprise the second platen (11), the external part of the sheathed and described piston rod (53) of described the second platen (11), described piston rod (53) offsets by described the second platen (11) and the end face of described sprocket hub (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181466.1U CN203765263U (en) | 2014-04-15 | 2014-04-15 | Pressing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181466.1U CN203765263U (en) | 2014-04-15 | 2014-04-15 | Pressing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203765263U true CN203765263U (en) | 2014-08-13 |
Family
ID=51282509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181466.1U Expired - Fee Related CN203765263U (en) | 2014-04-15 | 2014-04-15 | Pressing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203765263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993032A (en) * | 2020-08-24 | 2020-11-27 | 上海赛科石油化工有限责任公司 | Clutch hub mounting and dismounting tool and mounting and dismounting method |
-
2014
- 2014-04-15 CN CN201420181466.1U patent/CN203765263U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993032A (en) * | 2020-08-24 | 2020-11-27 | 上海赛科石油化工有限责任公司 | Clutch hub mounting and dismounting tool and mounting and dismounting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103233932A (en) | High integration hydraulic driving unit structure | |
| CN204301938U (en) | Downhole packing test convenient type verifying attachment | |
| CN203765263U (en) | Pressing machine | |
| CN203604682U (en) | Electro-hydraulic large torque pore plate throttling valve | |
| CN108150121B (en) | jet flow pressurization type electric hydraulic bridge plug setting tool | |
| CN103659247B (en) | A kind of oil cylinder assembling line | |
| CN104153786A (en) | Energy-saving tunnel shield thrust hydraulic system with coaxial motors | |
| EP3061672B1 (en) | A hydraulic steering cylinder | |
| CN110345116B (en) | Manual or electric digital hydraulic rotary servo valve | |
| CN204200727U (en) | Axial plunger variable motor hydraulic speed regulation loop system | |
| CN206257341U (en) | The electro-hydraulic execution equipment of intelligence | |
| CN206458381U (en) | A kind of hydraulic control liquid drives continuous pipe drilling tractor | |
| CN205349907U (en) | Swing oil cylinder | |
| CN202402029U (en) | Telescopic device of cutting arm of road header | |
| CN204082772U (en) | Combined type screw thread self-locking hydraulic jack | |
| CN104100595A (en) | Combined type threaded self-locking hydraulic oil cylinder | |
| CN204253494U (en) | High speed and high pressure injection machine die cylinder | |
| CN107461377A (en) | A kind of dustproof cooling hydraulic press | |
| CN202597327U (en) | Rapid oil cylinder | |
| CN206309677U (en) | A kind of big flow servo valve | |
| WO2017084225A1 (en) | Cable-type static-pressure setting tool | |
| CN203926176U (en) | Integrated hydraulic hoists | |
| CN204386457U (en) | A kind of drilling fluid water booster system | |
| CN106122136B (en) | A kind of device and method of die cavity superpressure when preventing internal high pressure forming | |
| CN203362431U (en) | Hydraulic driving dual-liquid grouting pump |
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 |
Granted publication date: 20140813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |