CN212455045U - Preceding top jar sheath assembly structure and preceding top jar - Google Patents
Preceding top jar sheath assembly structure and preceding top jar Download PDFInfo
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- CN212455045U CN212455045U CN202020741907.4U CN202020741907U CN212455045U CN 212455045 U CN212455045 U CN 212455045U CN 202020741907 U CN202020741907 U CN 202020741907U CN 212455045 U CN212455045 U CN 212455045U
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Abstract
The utility model provides a preceding top jar sheath assembly structure and preceding top jar belongs to the pneumatic cylinder field. According to the front jacking cylinder jacket assembling structure, the multi-stage inner cylinder barrels with the gradually decreased inner diameters are arranged in the jacket barrel, and the multi-stage inner cylinder barrels can extend out relative to the jacket barrel in an end-to-end connection mode or can be sequentially nested in the jacket barrel in a shrinkage mode; the upper end of the sheath cylinder is provided with a supporting plate, the supporting plate is provided with a first assembling hole which is in a circular truncated cone shape and is communicated up and down, and the inner diameter of the first assembling hole is sequentially reduced from bottom to top; the upper end of the last-stage inner cylinder barrel is provided with a piston rod, the shape of the lower end of the piston rod is matched with the first assembling hole, and the upper end of the piston rod is provided with an external thread; the piston rod stretches into first pilot hole from the lower extreme of backup pad, and piston rod lower extreme and first pilot hole cooperation, piston rod upper end threaded connection nut. The utility model discloses can be when the dump truck self-discharging tipping bucket process produces the impact force, its assembly face can more and more inseparable, can not produce not hard up phenomenon, and the top jar is inefficacy before avoiding.
Description
Technical Field
The utility model belongs to the technical field of the pneumatic cylinder and specifically relates to a preceding top jar sheath assembly structure and preceding top jar is related to.
Background
At present, the jacking cylinder is as lifting cylinder body before tipper generally adopts FC formula, and in the tipper use, the fitting surface of current FC formula jacking cylinder assembly structure receives the impact force of vehicle self-discharging tipping bucket in-process, causes the fitting surface to become flexible easily, finally leads to preceding jacking cylinder inefficacy.
Patent document CN209414308U discloses a hydraulic cylinder for a light anti-bending muck truck, the top end of the hydraulic cylinder penetrates through a top cover and is locked and fixed through a locknut, similar to the current FC type front top cylinder assembly structure, the assembly surface of the hydraulic cylinder is easy to loosen in the process of self-discharging and tipping of the truck, and finally the front top cylinder is caused to fail.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a preceding top jar sheath assembly structure and preceding top jar can not produce not hard up at its fitting surface of vehicle self-discharging tipping bucket in-process.
In order to achieve the above object, the present invention adopts the following technical solutions:
a front jacking cylinder sheath assembling structure comprises a sheath cylinder, an inner cylinder barrel, a supporting plate, a piston rod and a nut;
a multistage inner cylinder barrel with gradually decreased inner diameter is arranged in the sheath barrel, and the multistage inner cylinder barrels can extend out relative to the sheath barrel in an end-to-end connection mode or are sequentially nested in the sheath barrel in a shrinkage mode;
the upper end of the sheath cylinder is provided with a supporting plate, the supporting plate is provided with a first assembling hole which is in a circular truncated cone shape and is communicated up and down, and the inner diameter of the first assembling hole is sequentially reduced from bottom to top;
the upper end of the last-stage inner cylinder barrel is provided with a piston rod, the shape of the lower end of the piston rod is matched with the first assembling hole, and the upper end of the piston rod is provided with an external thread;
the piston rod stretches into first pilot hole from the lower extreme of backup pad, and piston rod lower extreme and first pilot hole cooperation, piston rod upper end threaded connection nut.
Furthermore, a top cover is arranged on the supporting plate, a cylindrical second assembly hole which is communicated up and down is formed in the top cover, the inner diameter of the second assembly hole is larger than that of the upper end of the first assembly hole, and an annular assembly shoulder is formed on the upper surface of the supporting plate in the second assembly hole; the upper end of the piston rod is provided with a gasket, and the gasket is positioned on the assembling shoulder.
Further, the gasket is provided as a flat gasket.
Further, the nut is configured as a lock nut.
Further, the taper of the inner wall of the first assembly hole is 10 degrees.
Furthermore, a four-stage inner cylinder with gradually reduced inner diameter is arranged in the sheath cylinder.
Furthermore, an upper hinge shaft is arranged on the sheath cylinder, and a lower hinge shaft is arranged at the lower end of the first-stage inner cylinder barrel.
A front jacking cylinder comprising the front jacking cylinder jacket assembling structure as described above.
The utility model has the beneficial technical effects that:
the utility model discloses preceding top jar sheath assembly structure is applied to preceding top jar, simple structure, and manufacturing cost is lower, and first pilot hole in the backup pad is the tapering fitting surface with the piston rod lower extreme, and when self-discharging vehicle tipping bucket process produced the impact force, its fitting surface can more and more inseparable, can not produce not hard up phenomenon, and the top jar inefficacy before avoiding.
Drawings
Fig. 1 is a schematic structural view of a front jacking cylinder according to an embodiment of the present invention, wherein the upper part of the drawing is a sectional view;
fig. 2 is a partial sectional view of the front top cylinder jacket assembling structure according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
Certain embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
The embodiment of the utility model provides an in, a preceding top cylinder sheath assembly structure is provided, please refer to fig. 1, fig. 2 and show, set up interior cylinder of level four (first level inner cylinder 21, second grade inner cylinder 22, tertiary inner cylinder 23, final stage inner cylinder 24) that the internal diameter degressive in the sheath section of thick bamboo 1, but cylinder end to end stretches out from the lower extreme of sheath section of thick bamboo 1 in the level four, perhaps, cylinder shrink nests in proper order in sheath section of thick bamboo 1 in the level four.
An upper hinge shaft 6 is arranged on the sheath cylinder 1, and a lower hinge shaft 7 is arranged at the lower end of the first-stage inner cylinder 21. The upper hinge shaft 6 is used for being assembled with a container of the dump truck, and the lower hinge shaft 7 is used for being assembled with a chassis of the dump truck.
The upper end of a sheath section of thick bamboo 1 sets up backup pad 3, and the first pilot hole 31 that link up from top to bottom is seted up to the intermediate position of backup pad 3, and first pilot hole 31 is the round platform form, and the internal diameter of first pilot hole 31 reduces from making progress in proper order down. In this embodiment, the taper of the inner wall of the first fitting hole 31 is preferably 10 °, which is better matched with the lower end of the piston rod 4.
The upper end of the last-stage inner cylinder barrel 24 is provided with a piston rod 4, the shape of the lower end of the piston rod 4 is matched with the first assembling hole 31, and the upper end of the piston rod 4 is provided with an external thread.
The piston rod 4 extends into the first assembling hole 31 from the lower end of the supporting plate 3, the lower end of the piston rod 4 is matched with the first assembling hole 31, and the upper end of the piston rod 4 is in threaded connection with the locking nut 5.
In order to enable the piston rod 4 to be firmly locked by the locking nut 5, the top cover 8 is welded on the supporting plate 3, the top cover 8 is provided with a second assembling hole 81 which is vertically communicated, and the second assembling hole 81 is cylindrical. The inner diameter of the second fitting hole 81 is larger than that of the upper end of the first fitting hole 31, and the upper surface of the support plate 3 in the second fitting hole 81 forms an annular fitting shoulder 32. The upper end of the piston rod 4 is provided with a flat washer 9, and the flat washer 9 is positioned on the assembly shoulder 32.
The embodiment also provides a front top cylinder, which comprises the front top cylinder jacket assembling structure.
Up to this point, the present embodiment has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly recognize a front top cylinder jacket assembling structure of the present invention. The utility model discloses a preceding top jar sheath assembly structure is applied to dump vehicle's preceding top jar, and first pilot hole 31 in the backup pad 3 is the tapering fitting surface with 4 lower extremes of piston rod, and when dump vehicle self-discharging tipping bucket process produced the impact force, its fitting surface can more and more inseparable, can not produce not hard up phenomenon, and the top jar is inefficacy before avoiding.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a preceding top cylinder sheath assembly structure which characterized in that: comprises a sheath cylinder, an inner cylinder barrel, a supporting plate, a piston rod and a nut;
a multistage inner cylinder barrel with gradually decreased inner diameter is arranged in the sheath barrel, and the multistage inner cylinder barrels can extend out relative to the sheath barrel in an end-to-end connection mode or are sequentially nested in the sheath barrel in a shrinkage mode;
the upper end of the sheath cylinder is provided with a supporting plate, the supporting plate is provided with a first assembling hole which is in a circular truncated cone shape and is communicated up and down, and the inner diameter of the first assembling hole is sequentially reduced from bottom to top;
the upper end of the last-stage inner cylinder barrel is provided with a piston rod, the shape of the lower end of the piston rod is matched with the first assembling hole, and the upper end of the piston rod is provided with an external thread;
the piston rod stretches into first pilot hole from the lower extreme of backup pad, and piston rod lower extreme and first pilot hole cooperation, piston rod upper end threaded connection nut.
2. The front head cylinder jacket assembling structure as set forth in claim 1, wherein: a top cover is arranged on the supporting plate, a cylindrical second assembling hole which is communicated up and down is formed in the top cover, the inner diameter of the second assembling hole is larger than that of the upper end of the first assembling hole, and an annular assembling shoulder is formed at the part, in the second assembling hole, of the upper surface of the supporting plate; the upper end of the piston rod is provided with a gasket, and the gasket is positioned on the assembling shoulder.
3. The front head cylinder jacket assembling structure as set forth in claim 2, wherein: the gasket is configured as a flat gasket.
4. The front head cylinder jacket assembling structure as set forth in claim 1, wherein: the nut is configured as a locking nut.
5. The front head cylinder jacket assembling structure as set forth in claim 1, wherein: the taper of the inner wall of the first assembly hole is 10 degrees.
6. The front head cylinder jacket assembling structure as set forth in claim 1, wherein: four-stage inner cylinder barrels with decreasing inner diameters are arranged in the sheath barrels.
7. The front head cylinder jacket assembling structure as set forth in claim 1, wherein: an upper hinge shaft is arranged on the sheath cylinder, and a lower hinge shaft is arranged at the lower end of the first-stage inner cylinder.
8. A front jacking cylinder is characterized in that: a front jack-boot fitting structure comprising any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020741907.4U CN212455045U (en) | 2020-05-07 | 2020-05-07 | Preceding top jar sheath assembly structure and preceding top jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020741907.4U CN212455045U (en) | 2020-05-07 | 2020-05-07 | Preceding top jar sheath assembly structure and preceding top jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212455045U true CN212455045U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020741907.4U Active CN212455045U (en) | 2020-05-07 | 2020-05-07 | Preceding top jar sheath assembly structure and preceding top jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212455045U (en) |
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2020
- 2020-05-07 CN CN202020741907.4U patent/CN212455045U/en active Active
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