CN211667021U - Novel stress application hydraulic bolt - Google Patents
Novel stress application hydraulic bolt Download PDFInfo
- Publication number
- CN211667021U CN211667021U CN201922396007.0U CN201922396007U CN211667021U CN 211667021 U CN211667021 U CN 211667021U CN 201922396007 U CN201922396007 U CN 201922396007U CN 211667021 U CN211667021 U CN 211667021U
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- bolt
- taper sleeve
- nut
- fastening nut
- hydraulic
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Abstract
The utility model provides a novel afterburning hydraulic bolt, it can solve traditional hydraulic bolt and install and remove the process complicacy, and is consuming time for a long time, simultaneously, uses the frock more, and is with high costs, in addition, has the not hard up technical problem of potential safety hazard of tight set nut. The utility model provides a novel afterburning hydraulic bolt, its includes elasticity taper sleeve, tie bolt and lock nut, and elasticity taper sleeve suit is outside tie bolt, tie bolt's middle part and elasticity taper sleeve taper fit, tie bolt's both ends position and lock nut screw-thread fit, its characterized in that: one end of the elastic taper sleeve is provided with an annular flanging which is radially outward convex, each fastening nut is respectively provided with pushing bolts which are annularly and uniformly distributed around the axis and are in threaded connection with the fastening nuts, the heads of the pushing bolts are provided with through holes, and the heads of the pushing bolts on the same fastening nut are connected and fixed after being penetrated by steel wires.
Description
Technical Field
The utility model relates to a bolt technical field especially relates to a hydraulic bolt that is used for flange and flange joint, concretely relates to novel afterburning hydraulic bolt.
Background
Traditional hydraulic bolt includes the elasticity taper sleeve, tie bolt and holding nut, during the assembly, at first the elasticity taper sleeve suit inserts two flange fit for each other's fitting hole after the tie bolt is outer together, secondly with last clamping ring and install and remove the hydro-cylinder and promote tie bolt, make the elasticity taper sleeve expand tightly and with fitting hole interference fit, once more, holding nut is installed respectively at tie bolt's both ends, install the pull ring and install and remove the hydro-cylinder, carry out the pump oil, utilize the pull ring simultaneously, constantly tighten up the nut, reach the prestressing force of design with the tensile tie bolt, at this moment, the nut of two flange terminal surfaces just sticiss on the flange surface, be in the same place tie bolt and flange fastening. This structure need cooperate clamping ring, pull ring and install and remove the hydro-cylinder, installs and removes the process complicacy, and is of a specified duration consuming time, simultaneously, uses the frock more, and is with high costs, in addition, has the not hard up potential safety hazard of holding nut.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel afterburning hydraulic bolt, it can solve traditional hydraulic bolt and install and remove the process complicacy, and is consuming time for a long time, simultaneously, uses the frock more, and is with high costs, in addition, has the not hard up technical problem of potential safety hazard of tight set nut.
Its technical scheme is such, a neotype afterburning hydraulic bolt, it includes elasticity taper sleeve, tie bolt and lock nut, the elasticity taper sleeve suit is outside the tie bolt, the middle part of tie bolt with elasticity taper sleeve taper fit, the both ends position and the lock nut screw-thread fit of tie bolt, its characterized in that: one end of the elastic taper sleeve is provided with an annular flanging which is outwards convex along the radial direction, and each fastening nut is respectively provided with pushing bolts which are annularly and uniformly distributed around the axis and are in threaded connection with the fastening nuts.
Furthermore, each fastening nut is provided with 2N pushing bolts, wherein N is an even number which is more than or equal to 2.
Furthermore, each fastening nut is provided with 8 jacking bolts.
Furthermore, the two ends of the tensioning bolt are respectively sleeved with a gasket between the fastening nut and the elastic taper sleeve.
Furthermore, the heads of the pushing bolts are provided with through holes, and the heads of the pushing bolts on the same fastening nut are connected and fixed after penetrating through by steel wires.
The thrust augmentation hydraulic bolt of the utility model adds the thrust bolt on the fastening nut, in the installation process, the thrust bolt of the locking end is screwed to drive the tensioning bolt to move, the elastic taper sleeve expands tightly, the tensioning bolt and the flange are fixed together, thus the bolt installation does not need to prepare the press ring and assemble and disassemble the oil cylinder, similarly, in the disassembly process, the thrust bolt of the loosening end is screwed to drive the tensioning bolt to move reversely, the elastic taper sleeve is loosened, the tensioning bolt is disassembled from the installation hole of the flange, the assembly and disassembly processes only need a torque wrench to screw the thrust bolt, in the actual installation process after loading, the adjustment process after the sizes of the press ring and the pull ring are not accordant can be effectively avoided, the assembly and disassembly process is simpler and faster, meanwhile, the preparation of auxiliary tools such as the press ring and the pull ring can be reduced, the cost is low, in addition, the thrust bolt of the locking end can increase the pretightening force of the, the locking nut is prevented from loosening.
Drawings
Fig. 1 is a schematic structural view of the stressing hydraulic bolt of the present invention.
FIG. 2 is an initial installation view of a stressing hydraulic bolt;
fig. 3 is a mounting completion diagram of the stressing hydraulic bolt.
Detailed Description
As shown in fig. 1, a novel afterburning hydraulic bolt, it includes elasticity taper sleeve 5, tie bolt 4 and lock nut 2, and 5 suits of elasticity taper sleeve are outside tie bolt 4, and 5 taper fit of middle part and the elasticity taper sleeve of tie bolt 4, the both ends position and the 2 screw-thread fit of lock nut of tie bolt 4, its characterized in that: one end of the elastic taper sleeve 5 is provided with an annular flanging 6 which protrudes radially outwards and is used for being attached to the outer side surface of a flange to be connected, each fastening nut 2 is provided with 8 pushing bolts 1 which are annularly and uniformly distributed around an axis and are in threaded connection with the fastening nuts 2, two end parts of each tensioning bolt 4 are positioned between the fastening nuts 2 and the elastic taper sleeve 5 and are respectively sleeved with a gasket 3, the heads of the pushing bolts 1 are provided with through holes, the heads of the pushing bolts 1 on the same fastening nut 2 are connected and fixed after being penetrated through by steel wires 7, the pushing bolts can be prevented from being loosened, and the fastening nuts are further prevented from being loosened.
In fig. 1, 2 and 3, the left side of the forced hydraulic bolt is a jacking bolt at the locking end, and the right side of the forced hydraulic bolt is a jacking bolt at the loosening end. The top-pushing bolt at the locking end is attached to the gasket, namely the pre-tightening effect of the top-pushing bolt is increased on the basis of the fastening nut, and the pre-tightening force is better compared with that of the traditional hydraulic bolt.
The installation process is shown in fig. 2 and 3:
1) before the tension bolt is installed, a proper amount of clean lubricating oil is coated on the contact surface of the tension bolt and the elastic taper sleeve;
2) the elastic taper sleeve is plugged into the flange hole (a gap is reserved between the elastic taper sleeve and the flange hole, and the installation is easy), and then the tensioning bolt is plugged;
3) loading a hardened gasket, screwing in a fastening nut provided with a jacking bolt, screwing the jacking bolt in a diagonal mode (namely mid-span installation) by using a torque wrench, enabling the tensioning bolt and an elastic taper sleeve to generate relative movement, namely the elastic taper sleeve expands and generates certain interference with a flange hole, stopping screwing in the jacking bolt when the torque reaches (is digitally displayed by the torque wrench), then loosening the jacking bolt on the side, screwing the fastening nut, and screwing in the jacking bolt until the jacking bolt is attached to the gasket;
4) a fastening nut at the other end is arranged, and the pushing bolt is screwed down, and the pushing bolt stops being screwed in when the torque force reaches;
5) and penetrating a stainless steel wire on the pushing bolt for looseness prevention, so that the hydraulic bolt is completely installed.
The disassembly process is as follows:
1) before the hydraulic bolt is disassembled, the installation pre-tightening force of the tensioning bolt (namely, the pushing bolt and the tightening nut at the locking end are disassembled) is eliminated;
2) removing the steel wire, screwing down the pushing bolt at the loosening end until the tensioning bolt is loosened and separated, automatically contracting the elastic taper sleeve, and taking out the tensioning bolt and the elastic taper sleeve from the bolt hole;
3) other hydraulic bolts are disassembled in a diagonal mode (namely mid-span installation).
Claims (5)
1. The utility model provides a novel afterburning hydraulic bolt, its includes elasticity taper sleeve, tie bolt and lock nut, elasticity taper sleeve suit is outside tie bolt, tie bolt's middle part with elasticity taper sleeve taper fit, tie bolt's both ends position and lock nut screw-thread fit, its characterized in that: one end of the elastic taper sleeve is provided with an annular flanging which is outwards convex along the radial direction, and each fastening nut is respectively provided with pushing bolts which are annularly and uniformly distributed around the axis and are in threaded connection with the fastening nuts.
2. The new type of stressing hydraulic bolt according to claim 1, characterized in that: each fastening nut is provided with 2N pushing bolts, and N is an even number more than or equal to 2.
3. The new type of stressing hydraulic bolt according to claim 2, characterized in that: and 8 pushing bolts are arranged on each fastening nut.
4. The new type of stressing hydraulic bolt according to claim 1, characterized in that: the two ends of the tensioning bolt are respectively sleeved with a gasket between the fastening nut and the elastic taper sleeve.
5. The new type of stressing hydraulic bolt according to claim 1, characterized in that: the head of each jacking bolt is provided with a through hole, and the head of each jacking bolt on the same fastening nut is connected and fixed after being penetrated by a steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922396007.0U CN211667021U (en) | 2019-12-25 | 2019-12-25 | Novel stress application hydraulic bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922396007.0U CN211667021U (en) | 2019-12-25 | 2019-12-25 | Novel stress application hydraulic bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211667021U true CN211667021U (en) | 2020-10-13 |
Family
ID=72736773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922396007.0U Active CN211667021U (en) | 2019-12-25 | 2019-12-25 | Novel stress application hydraulic bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211667021U (en) |
-
2019
- 2019-12-25 CN CN201922396007.0U patent/CN211667021U/en active Active
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