CN104759870A - Horizontal limiting device for bolt drawing machine - Google Patents
Horizontal limiting device for bolt drawing machine Download PDFInfo
- Publication number
- CN104759870A CN104759870A CN201510105558.0A CN201510105558A CN104759870A CN 104759870 A CN104759870 A CN 104759870A CN 201510105558 A CN201510105558 A CN 201510105558A CN 104759870 A CN104759870 A CN 104759870A
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- China
- Prior art keywords
- piston rod
- stretching machine
- piston
- cylinder body
- bolt stretching
- 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.)
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- 239000007788 liquid Substances 0.000 claims description 19
- 239000000725 suspension Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract 3
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention relates to a horizontal limiting device for a bolt drawing machine. The problems that the horizontal adjustment of the existing bolt drawing machine is inconvenient and the like are solved. The horizontal limiting device comprises a cylinder body, wherein an empty chamber is formed inside the cylinder body; one end of the cylinder body is open and the other end of the cylinder body is closed; the open end of the cylinder body is closed through a cylinder cover; a piston rod is arranged in the cylinder body in a penetrating mode; one end of the piston rod is arranged in the cylinder cover in a penetrating mode and connected with a lifting hook; the other end of the piston rod is arranged at the closed end of the cylinder body in a penetrating mode and the closed end is connected with an installation frame; a piston body sleeves the piston rod, wherein the empty chamber can be divided into a main chamber and an auxiliary chamber through the piston body; the outer side of the cylinder body is provided with a valve seat which is provided with a piston sliding control structure; an elastic reset structure is arranged between the piston body and the cylinder cover, wherein a trend that the piston body moves towards the direction of the auxiliary chamber can be kept through the elastic reset structure. According to the horizontal limiting device for the bolt drawing machine, the structure is simple, the stability is good, the operation is easy, the horizontal inclined angle can be convenient to adjust through the bolt drawing machine, and the accuracy is high.
Description
Technical field
The invention belongs to mechanical equipment technical field, especially relate to one
bolt stretching machine Compact Mounts.
Background technology
Bolt stretching machine is a kind of hydraulic power source provided by fluid power booster, utilize the expansion force that superpressure oil pump produces, the bolt of the power that is applied in is elongated in its elastic deformation area, diameter of bolt slight deformation, thus make nut be easy to loosen or apply as hydraulic pressure excessively full connection the device of axial force, carry out top pressure to install, thus making the bolt of all size be convenient to device that is fastening and dismounting, it is widely used in the fields such as petrochemical industry, nuclear power, wind-powered electricity generation, water power, thermoelectricity, boats and ships, railway, Aero-Space, mining, heavy-duty machinery.Because it belongs to super-pressure product, need very accurate during installation, horizontal tilt angle during the installation of existing bolt stretching machine is many first by the mode of manual measurement, then suspender is adopted to adjust its Realize, poor stability when making bolt stretching machine install like this, installation process is comparatively loaded down with trivial details, and levelness is inadequate, poor accuracy, so greatly hinders normal mounting and the use of bolt stretching machine.
In order to solve prior art Problems existing, people have carried out long-term exploration, propose solution miscellaneous.Such as, Chinese patent literature discloses a kind of auxiliary installation device for hydraulic bolt tensioning jack [application number: 201010250201.9], comprise clamp system, slide block guide rail mechanism and connecting rod, clamp system comprises clamping plate, bearing pin, clamping plate bolt and nut, jump ring, for multiple hydraulic bolt tensioning jack is fixed on this device; Slide block guide rail mechanism comprises slide block, guide rail, upper cover plate, index dial, limited block, and connecting rod one end is connected with the bearing pin of clamp system by the kidney-shaped hole slot on it, and the slide block of the other end and slide block guide rail mechanism, is connected through the hinge.Such scheme to some extent solves existing
bolt stretching machine Compact Mountsthe problem of inconvenience is installed, but the program still fundamentally cannot solve the inconvenience of horizontal tilt angle adjustment, the problem of poor accuracy.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of simple and reasonable, good stability
bolt stretching machine Compact Mounts.
For achieving the above object, present invention employs following technical proposal: this
bolt stretching machine Compact Mounts, comprise the cylinder body that inside has cavity, it is characterized in that, described cylinder body open at one end, the other end is closed, and described cylinder body opening end is closed by cylinder cap, piston rod is equipped with in described cylinder body, described piston rod one end is arranged in cylinder cap and this end is connected with the suspension hook be connected with top cover suspender by dismountable structure, the described piston rod other end is arranged in cylinder body blind end and this blind end is connected with the installing rack be connected with bolt stretching machine one end, be arranged with on the piston rod and be fixedly linked with piston rod and cavity can be separated into the piston body of main chamber and secondary cavity, valve seat is provided with outside cylinder body, described valve seat is provided with and can injects in main chamber according to bolt stretching machine horizontal tilt angle or extracting liquid thus the piston slip control structure that piston body is moved back and forth, and between described piston body and cylinder cap, be provided with the elastic reset structure that piston body can be made to keep to secondary cavity direction movement tendency.Obviously, here suspension hook is connected with containment internal head cover suspender, installing rack is connected with bolt stretching machine and makes whole bolt stretching machine install good stability, and realize the angle of inclination of bolt stretching machine one end when piston slip control structure control piston body slides, thus realize the adjustment of horizontal tilt angle.
Above-mentioned
bolt stretching machine Compact Mountsin, described piston slip control structure comprises the obliquity sensor be arranged on bolt stretching machine, described obliquity sensor is by controller and the 2/2-way hydraulic valve be arranged on valve seat, and described 2/2-way hydraulic valve is connected with main chamber by interface channel.Namely bolt stretching machine horizontal tilt angle is measured by obliquity sensor, as levelness does not meet the demands, the operating position that 2/2-way hydraulic valve changes valve core of the electromagnetic valve is controlled according to controller, thus make hydraulic oil enter main chamber, piston rod in cylinder body, relative position moves, thus reduce the height of bolt stretching machine in this position, when generation adjusting range exceeds the situation of actual angle of inclination, again level-off again after piston rod adjustment need to be made in Compact Mounts to reset, namely connecting passage is unimpeded, piston rod relies on its deadweight that hydraulic oil is discharged main chamber, realize Compact Mounts zero.
Above-mentioned
bolt stretching machine Compact Mountsin, described interface channel comprises and being arranged in valve seat and L-shaped first liquid passage, described first liquid passage two ends are respectively equipped with sealing-plug, and described first liquid passage end sidepiece is connected with 2/2-way hydraulic valve, other end sidepiece is connected with main chamber by the second liquid passage vertical with this end.Obviously, sealing-plug is here convenient to the injection of hydraulic oil or the maintenance of device.
Above-mentioned
bolt stretching machine Compact Mountsin, be provided with the limiting bush being placed on piston rod in described main chamber, and described limiting bush and cylinder cap are fixedly linked.Make to carry out axial limiting to the movement of piston body.
Above-mentioned
bolt stretching machine Compact Mountsin, described elastic reset structure comprises and being arranged in main chamber and the back-moving spring be sheathed on piston rod, and described back-moving spring one end to be arranged in limiting bush and with limiting bush bottom mutually against, the other end is against setting on the piston body.
Above-mentioned
bolt stretching machine Compact Mountsin, described installing rack comprises the support body in having U-shaped opening, described piston rod is through support body and extend towards U-shaped opening, described support body one end and cylinder body are fixedly linked, the other end is provided with can by the bearing pin of U-shaped closure of openings, and one end that described bearing pin is positioned at outside support body is provided with resilient key, and described resilient key is connected with support body by steel wire rope.Namely by bearing pin, U-shaped closure of openings is realized being connected of support body and bolt stretching machine.
Above-mentioned
bolt stretching machine Compact Mountsin, described dismountable structure comprises the turnbuckle be arranged between piston rod end and suspension hook, and described turnbuckle one end is connected with piston rod is removable, and the other end is connected with suspension hook is removable.
Above-mentioned
bolt stretching machine Compact Mountsin, described valve seat is connected with cylinder body by some bolts, and described valve seat is provided with the cover body that can cover on 2/2-way hydraulic valve.
Above-mentioned
bolt stretching machine Compact Mountsin, described controller is connected with the reset button of the zeros data that obliquity sensor can be recorded.When bolt stretching machine first time is located in accurate location, take accurate location as benchmark, by zero-setting button, the obliquity sensor on bolt stretching machine is reset, with accurate location surface for relative level face.
Above-mentioned
bolt stretching machine Compact Mountsin, described cylinder cap is connected with cylinder body by some set bolts, and described piston rod outer circumferential is provided with some sealing rings between piston rod and cylinder cap.Obviously, sealing when piston body moves is which enhanced.
Compared with prior art, originally
bolt stretching machine Compact Mountsadvantage be: structure is simple, good stability, is easy to operation, and make bolt stretching machine be convenient to adjustment horizontal tilt angle, accuracy is high.
Accompanying drawing explanation
fig. 1for structural representation provided by the invention
figure.
fig. 2for structure provided by the invention is analysed and observe
figure.
fig. 3for structural frames provided by the invention
figure.
in figure, cylinder body 1, cylinder cap 11, set bolt 111, sealing ring 112, valve seat 12, bolt 121, cover body 122, limiting bush 13, piston rod 2, suspension hook 3, turnbuckle 31, installing rack 4, U-shaped opening 41, support body 42, bearing pin 43, resilient key 44, steel wire rope 45, piston body 5, main chamber 51, secondary cavity 52, piston slip control structure 6, obliquity sensor 61, controller 62, 2/2-way hydraulic valve 63, interface channel 64, first liquid passage 641, sealing-plug 642, second liquid passage 643, elastic reset structure 7, back-moving spring 71, reset button 8.
Detailed description of the invention
Below in conjunction with
accompanying drawingthe present invention will be further described in detail with detailed description of the invention.
as Fig. 1shown in-3, this
bolt stretching machine Compact Mounts, comprise the cylinder body 1 that inside has cavity, cylinder body 1 open at one end, the other end is closed, and cylinder body 1 opening end is closed by cylinder cap 11, piston rod 2 is equipped with in cylinder body 1, piston rod 2 one end is arranged in cylinder cap 11 and this end is connected with the suspension hook 3 be connected with top cover suspender by dismountable structure, piston rod 2 other end is arranged in cylinder body 1 blind end and this blind end is connected with the installing rack 4 be connected with bolt stretching machine one end, piston rod 2 is arranged with and is fixedly linked with piston rod 2 and cavity can be separated into the piston body 5 of main chamber 51 and secondary cavity 52, valve seat 12 is provided with outside cylinder body 1, valve seat 12 is provided with and can injects in main chamber 51 according to bolt stretching machine horizontal tilt angle or extracting liquid thus the piston slip control structure 6 that piston body 5 is moved back and forth, and between piston body 5 and cylinder cap 11, be provided with the elastic reset structure 7 that piston body 5 can be made to keep to secondary cavity 52 direction movement tendency, namely suspension hook 3 is here connected with containment internal head cover suspender, installing rack 4 is connected with bolt stretching machine and makes whole bolt stretching machine install good stability, and the angle of inclination of bolt stretching machine one end is realized when piston slip control structure 6 control piston body 5 slides, thus realize the adjustment of horizontal tilt angle.
Particularly, piston slip control structure 6 in the present embodiment comprises the obliquity sensor 61 be arranged on bolt stretching machine, obliquity sensor 61 is by controller 62 and the 2/2-way hydraulic valve 63 be arranged on valve seat 12, and 2/2-way hydraulic valve 63 is connected with main chamber 51 by interface channel 64, namely bolt stretching machine horizontal tilt angle is measured by obliquity sensor 61, as levelness does not meet the demands, the operating position that 2/2-way hydraulic valve 63 changes valve core of the electromagnetic valve is controlled according to controller 62, thus make hydraulic oil enter main chamber 51, piston rod 2 in cylinder body, relative position moves, thus reduce the height of bolt stretching machine in this position, when generation adjusting range exceeds the situation of actual angle of inclination, again level-off again after piston rod 2 adjustment need to be made in Compact Mounts to reset, even if connecting passage 64 is unimpeded, piston rod 2 relies on its deadweight that hydraulic oil is discharged main chamber 51, realize Compact Mounts zero.Wherein, here interface channel 64 comprises and is arranged on first liquid passage 641 in valve seat 12 and L-shaped, first liquid passage 641 two ends are respectively equipped with sealing-plug 642, and first liquid passage 641 one end sidepiece is connected with 2/2-way hydraulic valve 63, other end sidepiece is connected with main chamber 51 by the second liquid passage 643 vertical with this end, and namely sealing-plug 642 is here convenient to the injection of hydraulic oil or the maintenance of device.
Further, in order to axial limiting can be carried out to the movement of piston body 2, in main chamber 51, be provided with the limiting bush 13 being placed on piston rod 2, and limiting bush 13 and cylinder cap 11 are fixedly linked.Elastic reset structure 7 in the present embodiment comprises and being arranged in main chamber 51 and the back-moving spring 71 be sheathed on piston rod 2, and back-moving spring 71 one end to be arranged in limiting bush 13 and with limiting bush 13 bottom mutually against, the other end is against being arranged on piston body 5.Preferably, here installing rack 4 comprises the support body 42 in having U-shaped opening 41, piston rod 2 is through support body 42 and extend towards U-shaped opening 41, support body 42 one end and cylinder body 1 are fixedly linked, the other end is provided with the bearing pin 43 U-shaped opening 41 can closed, and bearing pin 43 one end be positioned at outside support body 42 is provided with resilient key 44, and resilient key 44 is connected with support body 42 by steel wire rope 45, namely by bearing pin 43 by closed for U-shaped opening 41 thus realize being connected of support body 42 and bolt stretching machine.
Further, the dismountable structure in the present embodiment comprises the turnbuckle 31 be arranged between piston rod 2 end and suspension hook 3, and turnbuckle 31 one end is connected with piston rod 2 is removable, and the other end is connected with suspension hook 3 is removable.Wherein, here valve seat 12 is connected with cylinder body 1 by some bolts 121, and valve seat 12 is provided with the cover body 122 that can cover on 2/2-way hydraulic valve 63, similarly, here cylinder cap 11 is connected with cylinder body 1 by some set bolts 111, and piston rod 2 outer circumferential is provided with some sealing rings 112 between piston rod 2 and cylinder cap 11, which enhances sealing when piston rod 2 moves.In addition, controller 62 in the present embodiment is connected with the reset button 8 of the zeros data that obliquity sensor 61 can be recorded, when bolt stretching machine first time is located in accurate location, take accurate location as benchmark, by zero-setting button, obliquity sensor 61 on bolt stretching machine is reset, with accurate location surface for relative level face.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ cylinder body 1 herein, cylinder cap 11, set bolt 111, sealing ring 112, valve seat 12, bolt 121, cover body 122, limiting bush 13, piston rod 2, suspension hook 3, turnbuckle 31, installing rack 4, U-shaped opening 41, support body 42, bearing pin 43, resilient key 44, steel wire rope 45, piston body 5, main chamber 51, secondary cavity 52, piston slip control structure 6, obliquity sensor 61, controller 62, 2/2-way hydraulic valve 63, interface channel 64, first liquid passage 641, sealing-plug 642, second liquid passage 643, elastic reset structure 7, back-moving spring 71, term such as reset button 8 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (10)
1. a bolt stretching machine Compact Mounts, comprise the cylinder body (1) that inside has cavity, it is characterized in that, described cylinder body (1) open at one end, the other end is closed, and described cylinder body (1) opening end is closed by cylinder cap (11), piston rod (2) is equipped with in described cylinder body (1), described piston rod (2) one end is arranged in cylinder cap (11) and this end is connected with the suspension hook (3) be connected with top cover suspender by dismountable structure, described piston rod (2) other end is arranged in cylinder body (1) blind end and this blind end is connected with the installing rack (4) be connected with bolt stretching machine one end, piston rod (2) is arranged with and is fixedly linked with piston rod (2) and cavity can be separated into the piston body (5) of main chamber (51) and secondary cavity (52), valve seat (12) is provided with in cylinder body (1) outside, described valve seat (12) is provided with can according to bolt stretching machine horizontal tilt angle to injecting in main chamber (51) or extracting liquid thus the piston slip control structure (6) making piston body (5) move back and forth, and between described piston body (5) and cylinder cap (11), be provided with the elastic reset structure (7) that piston body (5) can be made to keep to secondary cavity (52) direction movement tendency.
2. bolt stretching machine Compact Mounts according to claim 1, it is characterized in that, described piston slip control structure (6) comprises the obliquity sensor (61) be arranged on bolt stretching machine, described obliquity sensor (61) is by controller (62) and the 2/2-way hydraulic valve (63) be arranged on valve seat (12), and described 2/2-way hydraulic valve (63) is connected with main chamber (51) by interface channel (64).
3. bolt stretching machine Compact Mounts according to claim 2, it is characterized in that, described interface channel (64) comprises and being arranged in valve seat (12) and L-shaped first liquid passage (641), described first liquid passage (641) two ends are respectively equipped with sealing-plug (642), and described first liquid passage (641) one end sidepiece is connected with 2/2-way hydraulic valve (63), other end sidepiece is connected with main chamber (51) by the second liquid passage (643) vertical with this end.
4. the bolt stretching machine Compact Mounts according to claim 1 or 2 or 3, it is characterized in that, be provided with the limiting bush (13) being placed on piston rod (2) in described main chamber (51), and described limiting bush (13) and cylinder cap (11) are fixedly linked.
5. bolt stretching machine Compact Mounts according to claim 4, it is characterized in that, described elastic reset structure (7) comprises and being arranged in main chamber (51) and the back-moving spring (71) be sheathed on piston rod (2), and described back-moving spring (71) one end to be arranged in limiting bush (13) and with limiting bush (13) bottom mutually against, the other end is against being arranged on piston body (5).
6. bolt stretching machine Compact Mounts according to claim 4, it is characterized in that, described installing rack (4) comprises in the support body with U-shaped opening (41) (42), described piston rod (2) is through support body (42) and extend towards U-shaped opening (41), described support body (42) one end and cylinder body (1) are fixedly linked, the other end is provided with the bearing pin (43) U-shaped opening (41) can closed, and one end that described bearing pin (43) is positioned at support body (42) outside is provided with resilient key (44), and described resilient key (44) is connected with support body (42) by steel wire rope (45).
7. bolt stretching machine Compact Mounts according to claim 4, it is characterized in that, described dismountable structure comprises the turnbuckle (31) be arranged between piston rod (2) end and suspension hook (3), and described turnbuckle (31) one end is connected with piston rod (2) is removable, the other end is connected with suspension hook (3) is removable.
8. bolt stretching machine Compact Mounts according to claim 2, it is characterized in that, described valve seat (12) is connected with cylinder body (1) by some bolts (121), and described valve seat (12) is provided with the cover body (122) that can cover on 2/2-way hydraulic valve (63).
9. bolt stretching machine Compact Mounts according to claim 2, is characterized in that, described controller (62) is connected with the reset button (8) of the zeros data that obliquity sensor (61) can be recorded.
10. bolt stretching machine Compact Mounts according to claim 1, it is characterized in that, described cylinder cap (11) is connected with cylinder body (1) by some set bolts (111), and described piston rod (2) outer circumferential is provided with some sealing rings (112) be positioned between piston rod (2) and cylinder cap (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105558.0A CN104759870A (en) | 2015-03-10 | 2015-03-10 | Horizontal limiting device for bolt drawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105558.0A CN104759870A (en) | 2015-03-10 | 2015-03-10 | Horizontal limiting device for bolt drawing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104759870A true CN104759870A (en) | 2015-07-08 |
Family
ID=53642139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510105558.0A Pending CN104759870A (en) | 2015-03-10 | 2015-03-10 | Horizontal limiting device for bolt drawing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104759870A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820112A (en) * | 2021-09-16 | 2021-12-21 | 常州格林电力机械制造有限公司 | Performance test method of valve pin type bolt stretching leveling device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2282553A1 (en) * | 1975-07-15 | 1976-03-19 | Suspa Federungstech | Variable length hydraulically lockable control unit - has inner cylinder guided axially in outer one to control ports |
| JP2000062693A (en) * | 1998-08-20 | 2000-02-29 | Soqi Inc | Hydrotilt device |
| CN103967863A (en) * | 2014-05-09 | 2014-08-06 | 中科华核电技术研究院有限公司 | Hydraulic cylinder for lifting |
| CN203845701U (en) * | 2014-05-09 | 2014-09-24 | 中科华核电技术研究院有限公司 | Horizontal adjustment device |
| CN204673262U (en) * | 2015-03-10 | 2015-09-30 | 常州格林电力机械制造有限公司 | Bolt stretching machine Compact Mounts |
-
2015
- 2015-03-10 CN CN201510105558.0A patent/CN104759870A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2282553A1 (en) * | 1975-07-15 | 1976-03-19 | Suspa Federungstech | Variable length hydraulically lockable control unit - has inner cylinder guided axially in outer one to control ports |
| JP2000062693A (en) * | 1998-08-20 | 2000-02-29 | Soqi Inc | Hydrotilt device |
| CN103967863A (en) * | 2014-05-09 | 2014-08-06 | 中科华核电技术研究院有限公司 | Hydraulic cylinder for lifting |
| CN203845701U (en) * | 2014-05-09 | 2014-09-24 | 中科华核电技术研究院有限公司 | Horizontal adjustment device |
| CN204673262U (en) * | 2015-03-10 | 2015-09-30 | 常州格林电力机械制造有限公司 | Bolt stretching machine Compact Mounts |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820112A (en) * | 2021-09-16 | 2021-12-21 | 常州格林电力机械制造有限公司 | Performance test method of valve pin type bolt stretching leveling device |
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Application publication date: 20150708 |