CN204553483U - Radially-compact type hydraulic nut - Google Patents
Radially-compact type hydraulic nut Download PDFInfo
- Publication number
- CN204553483U CN204553483U CN201520191435.9U CN201520191435U CN204553483U CN 204553483 U CN204553483 U CN 204553483U CN 201520191435 U CN201520191435 U CN 201520191435U CN 204553483 U CN204553483 U CN 204553483U
- Authority
- CN
- China
- Prior art keywords
- nut body
- piston
- cavity
- deep gouge
- nut
- 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
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Actuator (AREA)
Abstract
The utility model announces a kind of radially-compact type hydraulic nut.Comprise nut body and piston; Nut body one end face has a circle deep gouge, and the piston of cylindrical tube shape is slidably put in nut body deep gouge; The outer cylinder surface that piston enters the one end in nut body has a circle deep gouge, and in nut body deep gouge, have the shoulder that a circle coordinates with the piston deep gouge degree of depth, nut body shoulder is positioned at piston deep gouge; The connecting passage of connection first cavity and the 3rd cavity is had in nut body; Nut body also has connection second cavity and extraneous vent; Nut body other end has the plural oil hole being communicated to the 3rd cavity, and oil hole end is provided with the oil nozzle be fixed on nut body.Middle nut body inside of the present utility model is being provided with two-stage or multi-stage piston arrangement along its axial direction, effectively can increase the lifting surface area of piston, reduce radial dimension.When same operating conditions and impacting force, radial dimension is less, has higher practicability.
Description
Technical field
The utility model relates to a kind of machanical fastener, specifically a kind of radially-compact type hydraulic nut.
Background technique
Along with the progress of Large-Scale Equipment manufacturing technology, its package size and working parameters etc. constantly increase and improve, and the nut that corresponding needs are larger is used for fastening relevant component.Need the dismounting of the large pretightening force nut of the bolts and nuts, particularly high strength of frequent dismounting in some heavy equipment in the industries such as mine, metallurgy, petrochemical industry, nuclear power, normally adopt hydraulic spanner.But use hydraulic spanner dismounting nut will take larger space, dismounting is inconvenient, and pretightening force is difficult to control.In addition, the design of some device structure is comparatively compact, and the installing space being supplied to nut is less, has higher requirement to the dismounting of nut.
Summary of the invention
In order to overcome, existing nut dismounting is inconvenient, demand space is comparatively large, pretightening force is difficult to the deficiencies such as control, and the utility model provides a kind of radially-compact type hydraulic nut being specially adapted to the narrow and small applications of radial installing space.
The utility model solves the technological scheme that its technical problem adopts: a kind of radially-compact type hydraulic nut, comprises nut body and piston; Described nut body one end face has a circle deep gouge, and the piston of cylindrical tube shape is slidably put in nut body deep gouge; The outer cylinder surface that described piston enters the one end in nut body has a circle deep gouge, and in nut body deep gouge, have the shoulder that a circle coordinates with the piston deep gouge degree of depth, nut body shoulder is positioned at piston deep gouge; Outside described nut body shoulder and be the first cavity between piston, being the second cavity inside nut body shoulder and between piston, is the 3rd cavity between piston interior edge face and nut body; The connecting passage of connection first cavity and the 3rd cavity is had in described nut body; Nut body also has connection second cavity and extraneous vent; Nut body other end has the plural oil hole being communicated to the 3rd cavity, and oil hole end is provided with the oil nozzle be fixed on nut body.
It is further: be provided with the first seal ring, the second seal ring and the 3rd seal ring between described piston outer wall and nut body successively; Described first seal ring is positioned at outside the first cavity, and it is arranged in the deep gouge that is opened on piston outer wall; Second seal ring is arranged in the deep gouge that is opened on nut body shoulder; 3rd seal ring is between the second cavity and the 3rd cavity, and it is arranged in the deep gouge that is opened on piston outer wall; Be provided with the 4th seal ring between piston inner wall and nut body, the 4th seal ring is arranged in the deep gouge that is opened on piston inner wall.
Described oil hole comprises and is opened in oiling tapped hole on piston end surface and the first duct being communicated with oiling tapped hole and the 3rd cavity; Described oil nozzle is arranged in oiling tapped hole.
Described nut body end face has erection opening and prepackage hole; Described erection opening and prepackage hole respectively have two, are arranged symmetrically with.
Compared with prior art, the beneficial effects of the utility model are: nut body inside is being provided with two-stage or multi-stage piston arrangement along its axial direction, effectively can increase the lifting surface area of piston, reduce radial dimension.When same operating conditions and impacting force, radial dimension is less, has higher practicability.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Erection drawing when Fig. 3 is the utility model installation;
Erection drawing when Fig. 4 is the utility model dismounting;
Fig. 5 is a kind of structural drawing of nut body in specific embodiment;
Fig. 6 is a kind of structural drawing of piston in specific embodiment.
In figure: 1-nut body; 2-piston; 3-first seal ring; 4-second seal ring; 5-the 3rd seal ring; 6-first cavity; 7-oil nozzle; 8-second cavity; 9-the 3rd cavity; 10-oil hole; 10a-first duct; 10b-oiling tapped hole; 11-screw thread; 12-connecting passage; 12a-second duct; 12b-the 3rd duct; 12c-the 4th duct; 13-erection opening; 14-pre-installs hole; 15-vent; 16-oil sources; 17-pressure gauge; 18-pressure duct; 19-pressure measurement pipeline; 20-the 4th seal ring.
Embodiment
Be below a specific embodiment of the present utility model, existing the utility model is described in further detail by reference to the accompanying drawings.
As shown in Figure 1 to Figure 3, a kind of radially-compact type hydraulic nut, nut body 1 is provided with screw thread 11, this screw thread and need the formation that matches of the bolt installed to be threaded; Nut body 1 one end face has a circle deep gouge, and the piston 2 of cylindrical tube shape is slidably put in nut body 1 deep gouge; The outer cylinder surface that piston 2 enters the one end in nut body 1 has a circle deep gouge, the shoulder that a circle coordinates with the piston 2 deep gouge degree of depth is had in nut body 1 deep gouge, nut body 1 shoulder is positioned at piston 2 deep gouge, ensures that piston 2 can axially move within the specific limits; Form the first cavity 6 outside nut body 1 shoulder and between piston 2, inside nut body 1 shoulder and between piston 2, form the second cavity 8, between piston 2 interior edge face and nut body 1, form the 3rd cavity 9; First seal ring 3 is positioned at outside the first cavity 6, and it is arranged in the deep gouge that is opened on piston 2 outer wall; Second seal ring 4 is arranged in the deep gouge that is opened on nut body 1 shoulder; 3rd seal ring 5 is between the second cavity 8 and the 3rd cavity 9, and it is arranged in the deep gouge that is opened on piston 2 outer wall; Being provided with the 4th seal ring the 20, four seal ring 20 between piston 2 inwall and nut body 1 is arranged in the deep gouge that is opened on piston 2 inwall; Connecting passage 12 is communicated with the first cavity 6 and the 3rd cavity 9, and connecting passage 12 comprises the second duct 12a, the 3rd duct 2b and the 4th duct 12c; Vent 15 is communicated with the second cavity 8 with extraneous; Nut body 1 other end has the plural oil hole 10 being communicated to the 3rd cavity 9, oil hole 10 end is provided with the oil nozzle 7 be fixed on nut body 1, oil hole 10 comprises and is opened in oiling tapped hole 10b on piston 2 end face and the first duct 10a being communicated with oiling tapped hole 10b and the 3rd cavity 9, oil nozzle 7 is arranged in oiling tapped hole 10b, one-way valve is had in oil nozzle 7, closed condition is under nature, can be opened by outside connection, pass through oil nozzle, both the cavity oiling of nut can be given, also fluid or air can be discharged; Nut body 1 end face has two erection opening be arranged symmetrically with 13 and two prepackage holes 14 be arranged symmetrically with, and erection opening 13 can be used for the handling of hydraulic nut and dismounting
,prepackage hole 14 can be used for the dismounting after the preliminary installation of hydraulic nut and pressure release;
As shown in Figure 3, hydraulic nut is installed: 1, confirms that piston 2 is retracted in nut body 1 completely, and is placed into by nut on the bolt that will install.If needed, erection opening 13 can be used to lift.2, by prepackage hole 14, nut is tentatively installed.3, use pressure duct 18 to be connected with certain oil nozzle 7 of nut with pressure gauge 17 by oil sources 16 respectively with pressure measurement pipeline 19, inject high-voltage oil liquid.If needed, the highest one of position in oil nozzle first should be selected to be exhausted operation, and then to carry out oil injection operation.High-voltage oil liquid enters the 3rd cavity 9, and enters the first cavity 6 by connecting passage 12.Now, the protruding and workpiece pressing of the piston 2 of nut, vent 15 has gas to discharge simultaneously.4, when pressure gauge 16 is shown to required pressure, stop oiling, remove hydraulic power and pressure gauge, complete the installation of nut.
As shown in Figure 4, hydraulic nut is removed: 1, connects oil sources 16, carry out pressure release oil extraction by oil nozzle 7, removes the pretightening force of nut.2, use prepackage hole 14 to be removed by nut, if needed, use erection opening to lift.3, make it to retract completely by applying suitable external force to the piston 2 of nut.
As shown in Figure 5 and Figure 6, nut body 1 and piston 2 are split type, and have multiple component combination to form respectively, nut body 1 comprises 1a, 1b, 1c and 1d, is connected between each parts by bolt, and piston 2 comprises 2a, 2b and 2c, is connected between each parts by bolt.
Claims (4)
1. a radially-compact type hydraulic nut, comprises nut body (1) and piston (2); Described nut body (1) end face has a circle deep gouge, and the piston (2) of cylindrical tube shape is slidably put in nut body (1) deep gouge; It is characterized in that: the outer cylinder surface that described piston (2) enters the one end in nut body (1) has a circle deep gouge, in nut body (1) deep gouge, have the shoulder that a circle coordinates with piston (2) the deep gouge degree of depth, nut body (1) shoulder is positioned at piston (2) deep gouge; Being the first cavity (6) outside described nut body (1) shoulder and between piston (2), is the second cavity (8) inside nut body (1) shoulder and between piston (2), is the 3rd cavity (9) between piston (2) interior edge face and nut body (1); The connecting passage (12) of connection first cavity (6) and the 3rd cavity (9) is had in described nut body (1); Nut body (1) also has connection second cavity (8) and extraneous vent (15); Nut body (1) other end has the plural oil hole (10) being communicated to the 3rd cavity (9), and oil hole (10) end is provided with the oil nozzle (7) be fixed on nut body (1).
2. radially-compact type hydraulic nut according to claim 1, is characterized in that: be provided with the first seal ring (3), the second seal ring (4) and the 3rd seal ring (5) between described piston (2) outer wall and nut body (1) successively; Described first seal ring (3) is positioned at the first cavity (6) outside, and it is arranged in the deep gouge that is opened on piston (2) outer wall; Second seal ring (4) is arranged in the deep gouge that is opened on nut body (1) shoulder; 3rd seal ring (5) is positioned between the second cavity (8) and the 3rd cavity (9), and it is arranged in the deep gouge that is opened on piston (2) outer wall; Be provided with the 4th seal ring (20) between piston (2) inwall and nut body (1), the 4th seal ring (20) is arranged in the deep gouge that is opened on piston (2) inwall.
3. radially-compact type hydraulic nut according to claim 1, is characterized in that: described oil hole (10) comprises and is opened in oiling tapped hole (10b) on piston (2) end face and the first duct (10a) being communicated with oiling tapped hole (10b) and the 3rd cavity (9); Described oil nozzle (7) is arranged in oiling tapped hole (10b).
4. radially-compact type hydraulic nut according to claim 1, is characterized in that: described nut body (1) end face has erection opening (13) and prepackage hole (14); Described erection opening (13) and prepackage hole (14) respectively have two, are arranged symmetrically with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191435.9U CN204553483U (en) | 2015-04-01 | 2015-04-01 | Radially-compact type hydraulic nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191435.9U CN204553483U (en) | 2015-04-01 | 2015-04-01 | Radially-compact type hydraulic nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553483U true CN204553483U (en) | 2015-08-12 |
Family
ID=53828598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520191435.9U Expired - Fee Related CN204553483U (en) | 2015-04-01 | 2015-04-01 | Radially-compact type hydraulic nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204553483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401548A (en) * | 2017-08-10 | 2017-11-28 | 浙江恒成硬质合金有限公司 | A kind of hard alloy composite roll hydraulic nut |
-
2015
- 2015-04-01 CN CN201520191435.9U patent/CN204553483U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401548A (en) * | 2017-08-10 | 2017-11-28 | 浙江恒成硬质合金有限公司 | A kind of hard alloy composite roll hydraulic nut |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104723271A (en) | Bushing installation tool | |
| CN204961530U (en) | Hydraulic nut with overpressure protection function | |
| CN204553483U (en) | Radially-compact type hydraulic nut | |
| CN203756703U (en) | Prestress large hydraulic locking nut device | |
| CN201573171U (en) | Piston remover for ZL50F type loader pincer type brake-shoe | |
| CN203401452U (en) | Air compressor piston installer | |
| CN202029096U (en) | Nipple assembling tool | |
| CN204604217U (en) | A kind of stopping transportation pressure changes the device of high compression diameter ball valve | |
| CN204308542U (en) | A kind of novel single-stage stretcher | |
| CN210068918U (en) | Pressure difference preventing sealing plug for polycrystalline silicon production furnace body | |
| CN209599108U (en) | A kind of disassembly draw-off gear for motor reducer oil sealing | |
| CN201471365U (en) | Slip-type wheel puller | |
| CN206509717U (en) | A kind of general stretcher | |
| CN207736240U (en) | A kind of prefill valve dismantling device of 500t oil pipes end upsetting machine | |
| CN202883627U (en) | Screw joint device easy to disassemble and assemble | |
| CN206493242U (en) | A kind of positioner of strip of paper used for sealing mould | |
| CN205290468U (en) | Tight structure is pressed from both sides in decompression | |
| CN203235994U (en) | Novel inner outline pneumatic expansion type clamping device | |
| CN210422547U (en) | Wellhead valve is pressed and is changed and secondary seal device | |
| CN203248443U (en) | Hydraulic cylinder matching with multifunctional separating jack | |
| CN202628675U (en) | Limit structure of hydrocylinder with large cylinder diameter | |
| CN202910550U (en) | Installation tool used for installing bearing on installation shaft | |
| CN203347732U (en) | Well mouth blowout preventing device and well mouth pitching device | |
| CN204115702U (en) | Safety valve effective sealing diameter inquiry unit | |
| CN204366393U (en) | Single-stage high type bolt tensioning jack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20160401 |