CN106672553A - Hydraulic chain tightener of chain plate machine - Google Patents
Hydraulic chain tightener of chain plate machine Download PDFInfo
- Publication number
- CN106672553A CN106672553A CN201611061641.3A CN201611061641A CN106672553A CN 106672553 A CN106672553 A CN 106672553A CN 201611061641 A CN201611061641 A CN 201611061641A CN 106672553 A CN106672553 A CN 106672553A
- Authority
- CN
- China
- Prior art keywords
- chain
- valve
- oil cylinder
- hydraulic
- gas circuit
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/44—Belt or chain tensioning arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a hydraulic chain tightener of a chain plate machine. The hydraulic chain tightener comprises a hydraulic oil cylinder, a hydraulic oil pump providing high-pressure oil liquid for the hydraulic oil cylinder, an oil cylinder stretching oil conveying pipeline and an oil cylinder contracting oil conveying pipeline, and the oil cylinder stretching oil conveying pipeline and the oil cylinder contracting oil conveying pipeline are arranged between the hydraulic oil cylinder and the hydraulic oil pump and used for supplying oil. The hydraulic oil cylinder comprises an oil cylinder outer sleeve and an oil cylinder piston rod. The oil cylinder outer sleeve is provided with a first chain tightening connector. The oil cylinder piston rod is provided with a second chain tightening connector. Each of the first chain tightening connector and the second chain tightening connector comprises a connector body and a chain tightening pin column. Each connector body is provided with a chain fixing groove and a chain tightening pin hole, wherein the chain tightening pin hole penetrates the parts, on the two sides of the chain fixing groove, of the connector body, and the chain tightening pin column is arranged in the chain tightening pin hole. The hydraulic chain tightener is provided with a safety guaranteeing mechanism, and the probability that the pressure of the hydraulic pump is large, the stroke is long, and consequently the production safety accidents are caused is reduced; and meanwhile, adaptability is high, and the hydraulic pump cannot deflect under the action of large tension.
Description
Technical field
The present invention relates to a kind of coal mining implement safeguards frock technical field, particularly a kind of chain mat machine hydraulic pressure is tight
Chain device.
Background technology
Driving bolt supporting coal roadway adopts chain mat machine shipment, but when car is prolonged more than using it is artificial pinch, chain, it is artificial pinch, chain link
The operating type complex operation of bar, and while need multi agent cooperation, and need larger pulling force due to being tensioned chain mat machine, and people
Work mode is difficult to provide the pulling force for meeting requirement using other auxiliary equipments, makes chain mat machine tensioning insufficient, is often closing car
The lax situation of chain occurs afterwards, a chain operation is pinched so as to need to be tensioned chain mat machine again to re-start, not only the efficiency of operation
Low and operation effect is difficult to meet needs, just external pinch, during chain and pinch, the production after chain
Also there is potential safety hazard in journey.
For this purpose, the B of Chinese patent literature CN 103332450 discloses a kind of tight chain dress of mining side double-strand chain mat machine hydraulic pressure
Put, its structure mainly includes one group of scraper plate, and the section of scraper plate is with stepped I-shaped structure, at the two ends of scraper plate by connecting
Connect ring connection chain, wherein on two scraper plates respectively on be connected a fixture block, interval at least one is scraped between two fixture blocks
Plate, is hinged a hydraulic pump between two fixture blocks, and hydraulic pump connects hydraulic check valve by flexible pipe, and hydraulic check valve is first by flexible pipe connection
End valve.The deficiency that above-mentioned chain mat machine chain hydraulic chain tightener is present is：On the one hand safety guarantee mechanism is lacked, when hydraulic pump
Pressure is excessive and when long stroke, is easily caused connection ring button and deforms and even burst apart, so as to be easily caused production
Security incident；On the other hand double-strand chain mat machine is may be only available for, and the balance of hydraulic pump is difficult to protect during work
Card, under larger tension force effect deflection is susceptible to, and so as to affect the tensioning operation effectiveness of chain mat machine, or even easily causes life
Product accident.
The content of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of chain mat machine hydraulic tightener for motorcycle engine chain, with safety guarantee
Mechanism, reduce hydraulic pump pressure is excessive and the long probability for causing work safety accident of stroke, and applicability is wide, and hydraulic pump exists
Will not glance off under larger tension force effect.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of chain mat machine hydraulic tightener for motorcycle engine chain, including hydraulic jack, the hydraulic oil that provides high-voltage oil liquid for the hydraulic jack
Pump, be arranged between the hydraulic jack and the hydraulic oil pump be used for fuel feeding oil cylinder elongation pipeline road and oil cylinder shrink it is defeated
Oil pipe line, the hydraulic jack includes oil cylinder outer sleeve and cylinder piston rod, and the oil cylinder outer sleeve is away from the oil cylinder piston
One end of bar is provided with the first tight chain joint, and it is tight that the cylinder piston rod is provided with second away from one end of the oil cylinder outer sleeve
Chain joint, the first tight chain joint and the second tight chain joint include joint body and tight chain pin, the joint sheet
Chain fixing groove and tight chain pin-and-hole, the joint sheet of the tight chain pin-and-hole through the chain fixing groove both sides are provided with body
Body, the tight chain pin is arranged in the tight chain pin-and-hole.
As the further improvement of above-mentioned technical proposal, it is provided with the hydraulic oil pump and is stretched to the oil cylinder for control
The oil cylinder control handle of pipeline road conveying high-pressure fluid is shunk in long oil pipeline road to the oil cylinder.
As the further improvement of above-mentioned technical proposal, it is provided with the hydraulic oil pump for control to the hydraulic oil
The oil pump control valve rod of the high-voltage oil liquid pressure of cylinder conveying.
As the further improvement of above-mentioned technical proposal, be additionally provided with the hydraulic oil pump be delivered to for monitoring it is described
The oil liquid pressure table of the high-voltage oil liquid pressure of hydraulic jack.
Used as the further improvement of above-mentioned technical proposal, the oil cylinder to shrink and be provided with pneumatic cut-off valve on pipeline road,
The pneumatic cut-off valve connection control gas circuit pipe；The first tight chain joint is provided with the junction of the oil cylinder outer sleeve to be opened
Power easing valve, the tension force easing valve is connected on the control gas circuit pipe；And the tension force easing valve includes being fixedly connected institute
State the easing valve outer tube of the first tight chain joint, be fixedly connected slide bar in the easing valve of the oil cylinder outer sleeve；The easing valve
Outer tube include axis collinear arrange sealing slide opening and spring install room, the sealing slide opening close to the oil cylinder outer sleeve,
The spring installs room and connects the first tight chain joint；Slide bar includes that sealing sliding end and spring are installed in the easing valve
End, the sealing sliding end connects the oil cylinder outer sleeve, and the spring installation end is located at the spring and installs in room, and described
Spring is installed and the insurance valve spring being sleeved on the sealing sliding end is provided with room, and the internal diameter of the insurance valve spring is less than
The external diameter of the spring installation end；The easing valve outer tube has been disposed radially control gas circuit and has passed through at the sealing slide opening
Kong Yi, slide bar has also been disposed radially control gas circuit by hole two in the sealing sliding end in the easing valve, and the control
By hole one and the control gas circuit by the axially in parallel of hole two, the control gas circuit is located at the control to gas circuit processed by hole two
Gas circuit processed passes through between hole one and the spring installation end, and under the elastic force effect for overcoming the insurance valve spring, the control
Gas circuit processed can be moved to by hole two and pass through the axis collinear of hole one with the control gas circuit.
Used as the further improvement of above-mentioned technical proposal, oil cylinder to shrink and be provided with pneumatic cut-off valve on pipeline road, described
Pneumatic cut-off valve connection control gas circuit pipe；The second tight chain joint arranges tensioned guarantor with the junction of the cylinder piston rod
Dangerous valve, the tension force easing valve is connected on the control gas circuit pipe；And the tension force easing valve includes being fixedly connected described the
The easing valve outer tube of two tight chain joints, it is fixedly connected slide bar in the easing valve of the cylinder piston rod；The easing valve overcoat
Pipe includes that the sealing slide opening and spring of axis collinear setting installs room, and the sealing slide opening is described close to the cylinder piston rod
Spring installs room and connects the second tight chain joint；Slide bar includes sealing sliding end and spring installation end, institute in the easing valve
State sealing sliding end and connect the cylinder piston rod, the spring installation end is located at the spring and installs in room, and the spring
Install and the insurance valve spring being sleeved on the sealing sliding end is provided with room, the internal diameter of the insurance valve spring is less than described
The external diameter of spring installation end；The easing valve outer tube has been disposed radially control gas circuit and has passed through hole at the sealing slide opening
One, slide bar has also been disposed radially control gas circuit by hole two in the sealing sliding end in the easing valve, and the control
By hole one and the control gas circuit by the axially in parallel of hole two, the control gas circuit is located at the control to gas circuit by hole two
Gas circuit passes through between hole one and the spring installation end, and under the elastic force effect for overcoming the insurance valve spring, the control
Gas circuit can be moved to by hole two and pass through the axis collinear of hole one with the control gas circuit.
Compared with prior art, the invention has the beneficial effects as follows：
A kind of chain mat machine hydraulic tightener for motorcycle engine chain provided by the present invention, tensile force is big, and the tight chain of complete fulfillment is required, is shortened
Pinch, the time of chain link, it is artificial easy to operate, improve the security of operating personnel；And with safety guarantee mechanism, reduce hydraulic pressure
The pressure of pump is excessive and the long probability for causing work safety accident of stroke, and applicability is wide, and hydraulic pump is made in larger tension force
Will not glance off with.
Description of the drawings
With reference to the accompanying drawings and examples the present invention is further described.
Fig. 1 is a kind of structural representation of chain mat machine hydraulic tightener for motorcycle engine chain of the present invention；
Fig. 2 is the structural representation of the of the present invention first tight chain joint and the second tight chain joint；
Fig. 3 is the structural representation of tension force easing valve of the present invention.
Specific embodiment
Referring to figs. 1 to Fig. 3, Fig. 1 to Fig. 3 is the structural representation of a specific embodiment of the invention.
As shown in Figure 1 to Figure 3, a kind of chain mat machine hydraulic tightener for motorcycle engine chain, including hydraulic jack, height is provided for the hydraulic jack
Press oil the hydraulic oil pump 1 of liquid, be arranged between the hydraulic jack and the hydraulic oil pump 1 the oil cylinder elongation oil transportation for being used for fuel feeding
Pipeline 2 and oil cylinder shrink pipeline road 3, and the hydraulic jack includes oil cylinder outer sleeve 4 and cylinder piston rod 5, outside the oil cylinder
Sleeve 4 is provided with the first tight chain joint 6 away from one end of the cylinder piston rod 5, and the cylinder piston rod 5 is away from the oil cylinder
One end of outer sleeve 4 is provided with the second tight chain joint 7, and the first tight chain joint 6 and the second tight chain joint 7 include connecing
Head body 61 and tight chain pin 62, are provided with chain fixing groove 63 and tight chain pin-and-hole 64, the tight chain on the joint body 61
Pin-and-hole 64 runs through the joint body 61 of the both sides of chain fixing groove 63, and the tight chain pin 62 is arranged at the tight chain pin
In hole 64.It is provided with the hydraulic oil pump 1 and extend pipeline road 2 to the oil cylinder for control or shrink defeated to the oil cylinder
The oil cylinder control handle 8 of the conveying high-pressure fluid of oil pipe line 3.It is provided with the hydraulic oil pump 1 for control to the hydraulic oil
The oil pump control valve rod 9 of the high-voltage oil liquid pressure of cylinder conveying.Be additionally provided with the hydraulic oil pump 1 be delivered to for monitoring it is described
The oil liquid pressure table 10 of the high-voltage oil liquid pressure of hydraulic jack.
A kind of chain mat machine hydraulic tightener for motorcycle engine chain of said structure can be by the described first tight chain joint 6 and the second tight chain
Joint 7 fixes on the chain of needs pinch, the chain both sides for connecing, and then operating type is with the B of patent document CN 103332450
Disclosure, except for the difference that for the chain mat machine of chain structure, then needs the tight chain of a kind of chain mat machine hydraulic pressure described in two
, for the chain mat machine of three chain structures then needs a kind of chain mat machine hydraulic tightener for motorcycle engine chain described in three, but there is no balance in device
Property is difficult to ensure that, the problem of deflection is susceptible under larger tension force effect.
Further with improvement, the oil cylinder to shrink and be provided with pneumatic cut-off valve 31, the pneumatic cut-off valve on pipeline road 3
31 connection control gas circuit pipes 32；The first tight chain joint 6 arranges tensioned easing valve with the junction of the oil cylinder outer sleeve 4
33, the tension force easing valve 33 is connected on the control gas circuit pipe 32；And the tension force easing valve 33 includes being fixedly connected institute
State the easing valve outer tube 331 of the first tight chain joint 6, be fixedly connected slide bar 332 in the easing valve of the oil cylinder outer sleeve 4；Institute
State sealing slide opening 3311 and spring installation room 3312 that easing valve outer tube 331 is arranged including axis collinear, the sealing slide opening
3311 close to the oil cylinder outer sleeve 4, and the spring installs room 3312 and connects the described first tight chain joint 6；In the easing valve
Slide bar 332 includes sealing sliding end 3321 and spring installation end 3322, and the sealing sliding end 3321 connects the oil cylinder overcoat
Cylinder 4, the spring installation end 3322 is located at the spring and installs in room 3312, and the spring is installed in room 3312 and is provided with set
The insurance valve spring 333 being mounted on the sealing sliding end 3321, the internal diameter of the insurance valve spring 333 is pacified less than the spring
The external diameter at dress end 3322；The easing valve outer tube 331 has been disposed radially control gas circuit and has led at the sealing slide opening 3311
Via 1, slide bar 332 has also been disposed radially control gas circuit and has passed through in the sealing sliding end 3321 in the easing valve
Hole 2 3323, and the control gas circuit passes through the axially in parallel of hole 2 3323 by hole 1 and the control gas circuit, it is described
Control gas circuit is located at the control gas circuit and passes through between hole 1 and the spring installation end 3322 by hole 2 3323, and
Under overcoming the elastic force effect of the insurance valve spring 333, the control gas circuit can be moved to and the control by hole 2 3323
Gas circuit processed passes through the axis collinear of hole 1.
Similarly, the tension force easing valve 33 can also be arranged at the described second tight chain joint 7 and the cylinder piston rod 5
Junction, i.e.,：The tension force easing valve 33 includes being fixedly connected the easing valve outer tube 331 of the described second tight chain joint 7, consolidates
Surely slide bar 332 in the easing valve of the cylinder piston rod 5 is connected；The easing valve outer tube 331 includes what axis collinear was arranged
Sealing slide opening 3311 and spring install room 3312, and the sealing slide opening 3311 is installed close to the cylinder piston rod 5, the spring
Room 3312 connects the described second tight chain joint 7；Slide bar 332 includes sealing sliding end 3321 and spring installation end in the easing valve
3322, the sealing sliding end 3321 connects the cylinder piston rod 5, and the spring installation end 3322 is installed positioned at the spring
In room 3312, and the spring is installed and the insurance valve spring being sleeved on the sealing sliding end 3321 is provided with room 3312
333, the internal diameter of the insurance valve spring 333 is less than the external diameter of the spring installation end 3322；The easing valve outer tube 331 exists
Control gas circuit has been disposed radially by hole 1, slide bar 332 is described in the easing valve at the sealing slide opening 3311
Sealing sliding end 3321 has also been disposed radially control gas circuit by hole 2 3323, and the control gas circuit passes through the He of hole 1
By the axially in parallel of hole 2 3323, the control gas circuit is located at the control gas circuit and leads to the control gas circuit by hole 2 3323
It is described between via 1 and the spring installation end 3322, and under the elastic force effect for overcoming the insurance valve spring 333
Control gas circuit can be moved to by hole 2 3323 and pass through the axis collinear of hole 1 with the control gas circuit.
When the hydraulic jack pressure is excessive, stroke is excessive, in the elastic force effect for overcoming the insurance valve spring 333
Under, the control gas circuit can be moved to by hole 2 3323 and pass through the axis collinear of hole 1 with the control gas circuit, so as to
Make the pneumatic cut-off valve 31 connect the control gas circuit pipe 32, so as to cut off the fuel feeding that the oil cylinder shrinks pipeline road 3, stop
Only continue to shrink the hydraulic jack, to reach the purpose of safety guarantee.
Preferable enforcement to the present invention above is illustrated, and certainly, the present invention can also be adopted and above-mentioned enforcement
The different form of mode, the conversion of the equivalent that those of ordinary skill in the art are made on the premise of without prejudice to spirit of the invention
Or corresponding change, all should belong in protection scope of the present invention.
Claims (6)
1. a kind of chain mat machine hydraulic tightener for motorcycle engine chain, it is characterised in that：High-voltage oil liquid is provided including hydraulic jack, for the hydraulic jack
Hydraulic oil pump, be arranged between the hydraulic jack and the hydraulic oil pump oil cylinder elongation pipeline road and oil for being used for fuel feeding
Cylinder shrinks pipeline road, and the hydraulic jack includes oil cylinder outer sleeve and cylinder piston rod, and the oil cylinder outer sleeve is away from described
One end of cylinder piston rod is provided with the first tight chain joint, and the cylinder piston rod is arranged away from one end of the oil cylinder outer sleeve
There is the second tight chain joint, the first tight chain joint and the second tight chain joint include joint body and tight chain pin, institute
State and be provided with joint body chain fixing groove and tight chain pin-and-hole, institute of the tight chain pin-and-hole through the chain fixing groove both sides
Joint body is stated, the tight chain pin is arranged in the tight chain pin-and-hole.
2. a kind of chain mat machine hydraulic tightener for motorcycle engine chain according to claim 1, it is characterised in that：It is provided with the hydraulic oil pump
Pipeline road is extended for control to the oil cylinder or shrink the oil cylinder control of pipeline road conveying high-pressure fluid to the oil cylinder
Handle.
3. a kind of chain mat machine hydraulic tightener for motorcycle engine chain according to claim 1, it is characterised in that：It is provided with the hydraulic oil pump
The oil pump control valve rod of the high-voltage oil liquid pressure conveyed to the hydraulic jack for control.
4. a kind of chain mat machine hydraulic tightener for motorcycle engine chain according to claim 3, it is characterised in that：Also set up on the hydraulic oil pump
There is the oil liquid pressure table of the high-voltage oil liquid pressure that the hydraulic jack is delivered to for monitoring.
5. a kind of chain mat machine hydraulic tightener for motorcycle engine chain according to claim 1, it is characterised in that：The oil cylinder shrinks pipeline road
On be provided with pneumatic cut-off valve, the pneumatic cut-off valve connection control gas circuit pipe；Outside the first tight chain joint and the oil cylinder
The junction of sleeve arranges tensioned easing valve, and the tension force easing valve is connected on the control gas circuit pipe；And the tension force
Easing valve includes being fixedly connected the easing valve outer tube of the described first tight chain joint, being fixedly connected the insurance of the oil cylinder outer sleeve
Slide bar in valve；The easing valve outer tube includes that the sealing slide opening and spring of axis collinear setting installs room, the sealing slide opening
Close to the oil cylinder outer sleeve, the spring installs room and connects the first tight chain joint；Slide bar includes close in the easing valve
Envelope sliding end and spring installation end, the sealing sliding end connects the oil cylinder outer sleeve, and the spring installation end is located at described
Spring is installed in room, and the spring is installed and the insurance valve spring being sleeved on the sealing sliding end is provided with room, described
External diameter of the internal diameter of insurance valve spring less than the spring installation end；The easing valve outer tube is at the sealing slide opening along footpath
To control gas circuit is provided with by hole one, slide bar has also been disposed radially control gas in the sealing sliding end in the easing valve
Road is by hole two, and the control gas circuit passes through axially in parallel, the control gas in hole two by hole one and the control gas circuit
Road is located at the control gas circuit and passes through between hole one and the spring installation end by hole two, and is overcoming the insurance valve spring
Elastic force effect under, the control gas circuit can be moved to the control gas circuit by the axis collinear of hole one by hole two.
6. a kind of chain mat machine hydraulic tightener for motorcycle engine chain according to claim 1, it is characterised in that：Oil cylinder shrinks and set on pipeline road
It is equipped with pneumatic cut-off valve, the pneumatic cut-off valve connection control gas circuit pipe；The second tight chain joint and the cylinder piston rod
Junction tensioned easing valve is set, the tension force easing valve is connected on the control gas circuit pipe；And the tension force insurance
Valve includes being fixedly connected the easing valve outer tube of the described second tight chain joint, is fixedly connected in the easing valve of the cylinder piston rod
Slide bar；The easing valve outer tube include axis collinear arrange sealing slide opening and spring install room, the sealing slide opening close to
The cylinder piston rod, the spring installs room and connects the second tight chain joint；Slide bar includes that sealing is slided in the easing valve
Moved end and spring installation end, the sealing sliding end connects the cylinder piston rod, and the spring installation end is located at the spring
In installing room, and the spring is installed and the insurance valve spring being sleeved on the sealing sliding end, the insurance is provided with room
External diameter of the internal diameter of valve spring less than the spring installation end；The easing valve outer tube radially sets at the sealing slide opening
Control gas circuit is equipped with by hole one, slide bar has also been disposed radially control gas circuit and has led in the sealing sliding end in the easing valve
Via two, and the control gas circuit passes through the axially in parallel of hole two by hole one and the control gas circuit, the control gas circuit is led to
Via two is located at the control gas circuit and passes through between hole one and the spring installation end, and is overcoming the bullet of the insurance valve spring
Under power effect, the control gas circuit can be moved to by hole two and pass through the axis collinear of hole one with the control gas circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611061641.3A CN106672553B (en) | 2016-11-28 | 2016-11-28 | Hydraulic chain pressing device of chain scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611061641.3A CN106672553B (en) | 2016-11-28 | 2016-11-28 | Hydraulic chain pressing device of chain scraper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106672553A true CN106672553A (en) | 2017-05-17 |
| CN106672553B CN106672553B (en) | 2023-06-30 |
Family
ID=58866930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611061641.3A Active CN106672553B (en) | 2016-11-28 | 2016-11-28 | Hydraulic chain pressing device of chain scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106672553B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2655118A1 (en) * | 1989-11-30 | 1991-05-31 | Sachs Ind Sa | Hydraulic tensioner particularly for a chain |
| CN201962024U (en) * | 2011-03-12 | 2011-09-07 | 韶关市赛力乐液压件制造有限公司 | Multifunctional hydraulic safety supporting device |
| CN103332450A (en) * | 2013-05-21 | 2013-10-02 | 赵明 | Hydraulic chain tightening device for mining edge double chain plate machine |
| CN203903310U (en) * | 2014-06-21 | 2014-10-29 | 甘肃容和集团煤矿机械有限公司 | Novel hydraulic chain tightener |
| CN204528394U (en) * | 2015-03-03 | 2015-08-05 | 永城煤电控股集团有限公司 | A kind of scraper conveyor for coal mines chain is pinched and is connect device |
| CN206367796U (en) * | 2016-11-28 | 2017-08-01 | 淮北矿业股份有限公司 | A kind of chain mat machine hydraulic tightener for motorcycle engine chain |
-
2016
- 2016-11-28 CN CN201611061641.3A patent/CN106672553B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2655118A1 (en) * | 1989-11-30 | 1991-05-31 | Sachs Ind Sa | Hydraulic tensioner particularly for a chain |
| CN201962024U (en) * | 2011-03-12 | 2011-09-07 | 韶关市赛力乐液压件制造有限公司 | Multifunctional hydraulic safety supporting device |
| CN103332450A (en) * | 2013-05-21 | 2013-10-02 | 赵明 | Hydraulic chain tightening device for mining edge double chain plate machine |
| CN203903310U (en) * | 2014-06-21 | 2014-10-29 | 甘肃容和集团煤矿机械有限公司 | Novel hydraulic chain tightener |
| CN204528394U (en) * | 2015-03-03 | 2015-08-05 | 永城煤电控股集团有限公司 | A kind of scraper conveyor for coal mines chain is pinched and is connect device |
| CN206367796U (en) * | 2016-11-28 | 2017-08-01 | 淮北矿业股份有限公司 | A kind of chain mat machine hydraulic tightener for motorcycle engine chain |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106672553B (en) | 2023-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206754664U (en) | Quick release device | |
| CN1325753C (en) | Apparatus for work under pressure for oil-water well | |
| CN206367796U (en) | A kind of chain mat machine hydraulic tightener for motorcycle engine chain | |
| CN203817743U (en) | Hydraulic bolt tensioner | |
| CN205424261U (en) | From inflation formula seal for pipe joints device | |
| CN106672553A (en) | Hydraulic chain tightener of chain plate machine | |
| CN202884469U (en) | Vehicle liquefied natural gas bottle control pipeline structure | |
| CN203227995U (en) | Double-stage hydraulic stretcher | |
| CN201242016Y (en) | Oil collecting pipeline pressured leakage compensating apparatus | |
| CN203008882U (en) | Under-pressure working device of low-short type oil field water injection well | |
| CN209262679U (en) | Ore slurry pipeline | |
| CN201297146Y (en) | Gate valve replacing tooling of well head device | |
| CN204754868U (en) | Emergency control valve | |
| CN201027516Y (en) | Screw pump wellhead device | |
| CN104213848B (en) | Arc-shaped sealing device for opening hole of pipeline or drill rod with pressure and using method | |
| CN202622315U (en) | Stretcher for hydraulic bolt | |
| CN201277164Y (en) | Oil-draining lubricator type oil pump | |
| CN210599700U (en) | Anti-misoperation hydraulic clamp for rotary blowout preventer | |
| CN108798594B (en) | Dedicated pressure relief device in Downhole Construction | |
| CN202209327U (en) | Connection mode of hydraulic distributor | |
| CN203903310U (en) | Novel hydraulic chain tightener | |
| CN207554010U (en) | A kind of wellhead assembly valve allowing pressurized maintenance device | |
| CN203594376U (en) | Pulling-buckling type cable protector for tubing coupling portion | |
| CN203332842U (en) | Remote control hydraulic chain tensioning device of coal mine side double-chain chain plate machine | |
| CN201794850U (en) | Hydraulic reversing valve capable of conducting overload protection function in pressure maintaining process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jia Hui Inventor after: Zhao Shanliang Inventor after: Zhang Xian Inventor after: Wang Jianwen Inventor before: Jia Hui Inventor before: Zhao Shanliang Inventor before: Zhang Xian |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |