CN218428151U - Device is screwed up to oil damper direction lid assembly disconnect-type - Google Patents
Device is screwed up to oil damper direction lid assembly disconnect-type Download PDFInfo
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- CN218428151U CN218428151U CN202222674740.6U CN202222674740U CN218428151U CN 218428151 U CN218428151 U CN 218428151U CN 202222674740 U CN202222674740 U CN 202222674740U CN 218428151 U CN218428151 U CN 218428151U
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Abstract
The utility model discloses a device is screwed up to oil pressure shock absorber direction lid assembly disconnect-type, including the spanner seat of cover at direction lid assembly tip, the split type drive seat and the driven seat of being provided with of spanner seat, drive seat and driven seat pass through the cylindric lock connection and can dismantle the installation repeatedly, drive the outside conversion handle who is connected with and is used for connecting torque wrench that can dismantle of seat, drive seat and conversion handle as drive unit, the outside handle that is connected with of driven seat can be dismantled, follow and install two at least on the seat and cover preformed hole complex pin with the direction, two pins are the subtend setting, are 90 with application of force conversion handle axis angle, follow seat, handle and pin as driven unit. In this way, the utility model discloses pin and the replacement of being convenient for of drive unit pinhole clearance fit guarantee the reliability that the direction lid assembly was screwed up, and the frock roll-off is avoided in the safety cover design to drop the damage and ensure staff operational safety nature.
Description
Technical Field
The utility model relates to an oil pressure shock absorber production technical field especially relates to a device is screwed up to oil pressure shock absorber direction lid assembly disconnect-type.
Background
The oil pressure vibration damper is partially structured as shown in fig. 1, and comprises an oil storage cylinder 01, a guide cover 02 and a piston rod 03, wherein in the working process of the vibration damper, a guide cover assembly is subjected to an oil pressure load with a continuously changing tensile cavity, the guide cover 02 is connected to the oil storage cylinder 01 through threads to limit the axial displacement of the working cylinder, the oil storage cylinder and a bottom valve assembly, after the vibration damper is installed in place, the guide cover 02 is embedded into the oil storage cylinder 01, the revolution surface of the guide cover 02 cannot be clamped from the outside, the guide cover 02 is difficult to screw and tighten into the oil storage cylinder 01, and auxiliary tools are needed.
Chinese patent No. CN201922465415.7 discloses a wrench for screwing a cover body assembly of an oil damper for a rail transit vehicle, which specifically describes that a groove is formed in the middle of the inner wall of a wrench body and is used for embedding an oil seal cover to be screwed together with the oil seal cover, a guide cover and the oil seal cover in a comparison document are protruded relative to an outer cylinder and can be embedded from the outside and cannot be applied to screwing of the guide cover embedded in an oil storage cylinder, the prior patent also discloses that a pin is fixed at the bottom of the wrench body and is used for being embedded into a pin hole in the top surface of the guide cover, and only the pin and the pin hole are matched together, so that the following problems exist in the process: the pin slides out of the pin hole easily, and in the screwing process, the pin is easy to deform and difficult to replace, so that the assembly efficiency of a product is directly influenced, and the screwing reliability is difficult to guarantee.
Based on the above defects and shortcomings, there is a need to improve the prior art and design a separate tightening device for a guide cover assembly of an oil pressure damper.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a device is screwed up to oil pressure shock absorber direction lid assembly disconnect-type, has solved oil pressure shock absorber direction lid assembly and has screwed up the frock roll-off, and the pin warp the difficult change problem, has improved assembly efficiency, screws up the reliability through designing split type device of screwing up.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a device is screwed up to oil damper direction lid assembly disconnect-type, including the spanner seat of cover at direction lid assembly tip, the split type drive seat and the driven seat of being provided with of spanner seat, drive seat and driven seat pass through the cylindric lock connection and can dismantle the installation repeatedly, drive the outside conversion handle that is connected with and is used for connecting torque wrench that can dismantle of seat, drive seat and conversion handle conduct drive unit, the outside handle that is connected with of driven seat can be dismantled, install two at least on the driven seat and cover preformed hole complex pin with the direction, two pins are the subtend setting, and are 90 with application of force conversion handle axis angle, follow-up seat, handle and pin as driven unit.
Preferably, the driving seat is provided with a pin hole c for mounting a pin, the pin is in clearance fit with the pin hole c, and the pin is assembled in the pin hole c in a dispensing manner.
Preferably, the height h of the lower part of the pin passing through the pin hole c is lower than the depth of the reserved hole on the guide cover.
Preferably, the pin is made of 45 steel.
Preferably, the outer side of the wrench seat extends downwards to form a protective cover, and the protective cover can be sleeved on the oil storage cylinder of the guide cover assembly.
Preferably, the extension end of the conversion handle is provided with a square interface matched with the torque wrench, and the upper surface of the square interface is horizontally arranged to ensure that the torque wrench can be horizontally arranged on the conversion handle.
Preferably, be equipped with the external screw thread on conversion handle and the handle, be equipped with the screw hole of complex with it on drive seat and the driven seat, external screw thread length is shorter than screw hole length, the screw thread installation department of drive seat and driven seat upwards extends and is provided with the installation boss.
Preferably, the opposite surfaces of the driving seat and the driven seat are provided with a boss and a groove for connection, a cylindrical pin hole for mounting a cylindrical pin is arranged in the vertical direction of the boss and the groove, and the cylindrical pin hole is a blind hole.
Compared with the prior art, the beneficial effects of the utility model are that:
in the process of screwing the screwing device, the conversion handle has larger stress, and the threaded connection is convenient for realizing interchangeability of parts and components and reducing the cost;
the whole structure is a symmetrical structure, so that the stress distribution of the tightening under the alternating load working condition is improved, the two pins are arranged in opposite directions, the angle between the two pins and the axis of the force application conversion handle is 90 degrees, and the influence of unbalanced force application on the tightening torque of the manual arm due to limited freedom is reduced;
the two pins are matched with the preformed hole of the guide cover assembly and transmit the rotation torque of the driving unit to the guide cover assembly;
the pin is in small clearance fit with a pin hole on a driving seat of the driving unit, and the pin is prevented from axially falling out in a dispensing mode;
the driving unit and the driven unit are provided with protective covers to prevent the pin from sliding off and falling off when being screwed, the conversion handle is provided with a square interface connected with the torque wrench, and the torque is accurately controlled and screwed through the digital display torque wrench.
Drawings
Fig. 1 is a schematic structural view of a guide cover assembly of an oil pressure shock absorber.
Fig. 2 is a schematic view of a tooling state of a separate tightening device for a guide cover assembly of an oil pressure damper.
Fig. 3 is a development view of a separate type tightening device for a guide cover assembly of an oil damper.
Fig. 4 is a partial sectional view showing a state of a tool of a separate type tightening device for a guide cap assembly of an oil damper.
Fig. 5 is a rotational sectional view of a separate type tightening device for a guide cap assembly of an oil damper.
FIG. 6 is a schematic view of pin shear forces.
00, a preformed hole, 01, an oil storage cylinder, 02, a guide cover, 03, a piston rod, 1, a wrench seat, 10, a tool end face, 11, a protective cover, 2, a driving seat, 3, a driven seat, 4, a cylindrical pin, 5, a conversion handle, 50, a square interface, 6, a handle, 7, a pin, c and a pin hole.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.
Referring to fig. 1 to 6, an embodiment of the present invention includes:
the separable screwing device for the guide cover assembly of the oil pressure shock absorber comprises a wrench seat 1 sleeved at the end part of the guide cover assembly, wherein the wrench seat 1 is provided with a driving seat 2 and a driven seat 3 in a split mode, the driving seat 2 and the driven seat 3 are connected through a cylindrical pin 4 and can be repeatedly disassembled and installed, a conversion handle 5 used for connecting a torque wrench is detachably connected to the outside of the driving seat 2, the driving seat 2 and the conversion handle 5 serve as driving units to bear screwing force and ensure effective transmission of the screwing force, a handle 6 is detachably connected to the outside of the driven seat 3, at least two pins 7 matched with reserved holes 00 on a guide cover 02 are installed on the driven seat 3, the handle 6 and the pins 7 serve as driven units to apply pressing force to prevent the wrench seat from jumping out of the guide cover, stability of the screwing process is ensured, the two pins are arranged in opposite directions, and the axis angle of the force application conversion handle is 90 degrees.
Be provided with the pinhole c that is used for installing pin 7 on the drive seat 2, pin 7 and pinhole c clearance fit, unilateral clearance is less than 0.05mm, pin 7 is assembled pinhole c in through the mode of gluing, and restriction pin 7 is axial displacement on drive seat 2.
The height h of the lower portion of the pin 7 penetrating through the pin hole c is lower than the depth of the reserved hole 00 on the guide cover 02, the lower portion of the pin 7 is guaranteed to be inserted into the reserved hole 00, meanwhile, the tool end face 10 of the wrench seat 1 can be in contact with the outer end face of the guide cover 02, the positioning performance of a screwing device is enhanced, the pre-tightening reliability is improved, and the round angle c-1 is arranged on the pin hole c, so that the risk of stress concentration is reduced.
Fig. 6 is a schematic diagram of shearing stress of the pin 7, the oil pressure shock absorber requires that the tightening torque of the piston assembly is 240n.m, the distance between two pins 7 and the central axis is 40.3mm, the shearing force F1 borne by a single pin is 5955N, and the shearing stress borne by the pin 7 is 59.265 MPa.
The outer side of the wrench seat 1 extends downwards to be provided with a protective cover 11, and the protective cover 11 can be sleeved on an oil storage cylinder 01 of the guide cover assembly to limit radial displacement of the screwing device together.
Be equipped with the external screw thread on conversion handle 5 and the handle 6, be equipped with complex screw hole with it on drive seat 2 and the driven seat 3, M20X 2-7H 6g is chooseed for use in the screw-thread fit, and the fine screw thread has good centering nature, and external screw thread length weak point is in screw hole length, and restriction conversion handle 5 stretches out the inner wall of drive seat 2, and restriction handle 6 stretches out the inner wall of driven seat 3, prevents that it from interfering with the direction lid assembly, the screw thread installation department upwards extends of drive seat 2 and driven seat 3 is provided with installation boss 23, guarantees joint strength, and there is great stress in the handing-over department A of drive seat 2 in conversion handle 5, increases conversion handle 5 diameters, improves overall structure intensity, increase of service life.
The opposite face of drive seat 2 and driven seat 3 is provided with connects with boss and recess, is provided with the cylindric lock hole that is used for installing cylindric lock 4 in the vertical direction of boss and recess, cylindric lock 4 and cylindric lock hole clearance fit, the cylindric lock hole is the blind hole, the displacement of blind hole bottom surface restriction cylindric lock, prevent that cylindric lock 4 from dropping, boss and recess butt joint roughness are established to Ra3.2, avoid long-term use to influence the location effect, cylindric lock hole and cylindric lock 4 both ends all are equipped with the introduction chamfer, assembly efficiency is improved.
The utility model relates to a device during operation is screwed up to oil damper direction lid assembly disconnect-type, place drive unit on the direction lid assembly earlier, two pins 7 cooperate with the preformed hole 00 of direction lid assembly, then dock driven unit and drive unit, cylindric lock 4 is put into the butt joint hole promptly in the cylindric lock hole, realize being connected of whole drive side and driven side, provide decurrent packing force through handle 6 at last, apply the tightening force through external torque spanner, the rotatory downstream of direction lid 02, under the combined action of the screw resistance moment of direction lid 02 and the screw contact surface of oil storage cylinder 01 and the friction torque of screw contact surface, realize the pretension of direction lid assembly.
The utility model relates to a device is screwed up to oil pressure shock absorber direction lid assembly disconnect-type through designing split type tightening device, and the symmetrical structure improves structural stress distribution, and pin subtend sets up to be 90 with application of force handle axis angle, improve the pretension reliability, the replacement of being convenient for of pin clearance fit screws up the design of frock safety cover and avoids the frock damage that drops, ensures the operational safety simultaneously.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides a device is screwed up to oil hydraulic damper direction lid assembly disconnect-type which characterized in that: including the cover at the spanner seat of direction lid assembly tip, the split type drive seat and the driven seat that is provided with of spanner seat, drive seat and driven seat pass through the cylindric lock connection and can dismantle the installation repeatedly, drive seat outside can be dismantled and be connected with the conversion handle that is used for connecting torque wrench, drive seat and conversion handle are as drive unit, can dismantle from the seat outside and be connected with the handle, follow and install at least on the seat two and the direction cover preformed hole complex pin, two pins are the subtend setting, are 90 with application of force conversion handle axis angle, follow seat, handle and pin as driven unit.
2. The separate tightening device for the guide cover assembly of the oil damper as claimed in claim 1, wherein: the driving seat is provided with a pin hole c for installing a pin, the pin is in clearance fit with the pin hole c, and the pin is assembled in the pin hole c in a dispensing mode.
3. The separate tightening device for the guide cover assembly of the oil damper as claimed in claim 2, wherein: the height h of the lower part of the pin penetrating through the pin hole c is lower than the depth of the reserved hole on the guide cover.
4. The separate tightening device for the guide cover assembly of the oil damper as claimed in claim 1, wherein: the pins are made of 45 steel.
5. The separate tightening device for the guide cover assembly of the oil damper as set forth in claim 1, wherein: the outer side of the wrench seat extends downwards to form a protective cover, and the protective cover can be sleeved on an oil storage cylinder of the guide cover assembly.
6. The separate tightening device for the guide cover assembly of the oil damper as claimed in claim 1, wherein: the conversion handle stretches out the end and is provided with the square interface with torque wrench complex, square interface upper surface level sets up, guarantees that torque wrench can horizontal installation on the conversion handle.
7. The separate tightening device for the guide cover assembly of the oil damper as claimed in claim 1, wherein: the conversion handle and the handle are provided with external threads, the driving seat and the driven seat are provided with threaded holes matched with the external threads, the length of the external threads is shorter than that of the threaded holes, and the thread mounting positions of the driving seat and the driven seat extend upwards to form mounting bosses.
8. The separate tightening device for the guide cover assembly of the oil damper as claimed in claim 1, wherein: the opposite face of drive seat and driven seat is provided with boss and recess for the connection, is provided with the cylindric lock hole that is used for installing the cylindric lock in the vertical direction of boss and recess, and the cylindric lock hole is the blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222674740.6U CN218428151U (en) | 2022-10-11 | 2022-10-11 | Device is screwed up to oil damper direction lid assembly disconnect-type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222674740.6U CN218428151U (en) | 2022-10-11 | 2022-10-11 | Device is screwed up to oil damper direction lid assembly disconnect-type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218428151U true CN218428151U (en) | 2023-02-03 |
Family
ID=85042050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222674740.6U Active CN218428151U (en) | 2022-10-11 | 2022-10-11 | Device is screwed up to oil damper direction lid assembly disconnect-type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218428151U (en) |
-
2022
- 2022-10-11 CN CN202222674740.6U patent/CN218428151U/en active Active
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