CN205478653U - Novel piston head connection structure - Google Patents
Novel piston head connection structure Download PDFInfo
- Publication number
- CN205478653U CN205478653U CN201620222128.7U CN201620222128U CN205478653U CN 205478653 U CN205478653 U CN 205478653U CN 201620222128 U CN201620222128 U CN 201620222128U CN 205478653 U CN205478653 U CN 205478653U
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- CN
- China
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- piston
- seal groove
- piston rod
- semicircle card
- groove
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Abstract
The utility model provides a novel piston head connection structure, belongs to hydraulic equipment technical field, includes the piston rod and installs the piston in piston rod head portion, be equipped with external screw thread, seal groove, semicircle draw -in groove and jump ring groove on the piston rod head portion excircle in proper order, be equipped with the sealing washer in the seal groove, be equipped with the semicircle card in the semicircle draw -in groove, set up the jump ring in the jump ring groove, the utility model discloses simple structure, the theory of operation clarity, the mode that has adopted screw thread, sealing washer, semicircle card, jump ring and protecting cap to combine together between piston rod and the piston, the utility model discloses compare with structure in the past, under the equal diameter of axle, the axial load ability has obtained reinforcing by a wide margin, and the piston has obtained fixedly in that circumference and axial are all corresponding, and the safety factor has obtained further increase, has ensured the zonulae occludens of piston and piston rod.
Description
Technical field
This utility model belongs to technical field of hydraulic equipment, relates to a kind of piston head attachment structure, particularly relates to the attachment structure of a kind of piston and piston rod.
Background technology
Piston can be divided into monoblock type and assembled with the attachment structure of piston rod, monoblock type connects frequently with welding type, welding type is connected to bear bigger load and piston repeatedly moves back and forth the lower gravitation that easily produces in commissure and concentrates, and causes the fracture of piston rod root, causes job failure；Therefore in the connection commonly used assembled connected mode of big load condition lower piston Yu piston rod, common assembled has threaded, the types such as back-up ring connection and taper pin connection, wherein with threaded the most commonly used, when using threaded, piston is placed on piston rod, the axial restraint of piston is carried out at piston other end fastening nut, the most easily there is play rotationally and axially radially in piston, piston and cylinder body is so made easily to produce abrasion, gap between outside piston and cylinder body, gap between piston rod and piston hole is all by increase, ultimately result in piston resistance to increase；When operating pressure is higher or load is relatively big, diameter of piston rod the least in the case of, the screw thread of piston rod may transship, if the bearing capacity of piston rod to be increased on traditional structure, the diameter of axle of piston rod have to be increased, the diameter of axle once increases, the effective active area of piston just decreases, and reduces work efficiency.Utility model content
This utility model deficiency present on above-mentioned piston and piston rod attachment structure makes improvements; a kind of novel piston head attachment structure is proposed; further improve the connected mode of piston and piston rod; under the equal diameter of axle; the bearing capacity that piston is axial can be increased; will not depart from piston rod during guaranteeing piston movement, improve the security performance of operating, piston operational efficiency can be increased substantially.
The technical solution of the utility model is: a kind of novel piston head attachment structure, including piston rod and the piston being arranged on piston rod head；It is characterized in that: on described piston rod head cylindrical, be sequentially provided with external screw thread, seal groove, semicircle draw-in groove and jump-ring slot, be provided with sealing ring in described seal groove, described semicircle draw-in groove be provided with semicircle card, described jump-ring slot arranges jump ring；Described piston inner hole is provided with the female thread matched with described external screw thread, become placed against on the left of described semicircle card in its right end face with described piston, described semicircle card periphery is provided with semicircle card overcoat, described semicircle card overcoat left end face becomes placed against its right end face at described piston, the its right end face at described semicircle card overcoat is become placed against on the left of described jump ring, being provided with protecting cap on the right side of described jump ring, described protecting cap carries out axial restraint by clamp nut.
Described seal groove is made up of the first seal groove and the second seal groove, is mounted on sealing ring in the first seal groove and the second seal groove.
Described sealing ring is O RunddichtringO.
Hemisect is formed by described semicircle card by after annulus overall processing, for dissection type mounting structure.
The outside diameter of described semicircle card is more than the internal diameter of piston.
Described protecting cap is annular catch.
The beneficial effects of the utility model are: a kind of novel piston head attachment structure that the utility model proposes, simple in construction, operation principle is clear, the mode that screw thread, sealing ring, semicircle card, jump ring and protecting cap combine is have employed between piston rod with piston, the present invention is compared with conventional structure, under the equal diameter of axle, axial load ability has obtained significantly strengthening, piston is fixed the most accordingly at circumferential and axial, safety factor has obtained further increase, has ensured the compact siro spinning technology of piston and piston rod.
Accompanying drawing explanation
Fig. 1 is piston crown structural representation in this utility model.
Fig. 2 is this utility model integral installation distribution structure schematic diagram.
In figure: piston rod 1, external screw thread the 2, first seal groove the 3, second seal groove 4, semicircle draw-in groove 5, jump-ring slot 6, piston 7, sealing ring 8, semicircle card overcoat 9, semicircle card 10, protecting cap 11.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1-2, a kind of novel piston head attachment structure, including piston rod 1 and the piston 7 being arranged on piston rod 1 head；It is sequentially provided with external screw thread 2, seal groove, semicircle draw-in groove 5 and jump-ring slot 6 on piston rod 1 head cylindrical, in seal groove, is provided with sealing ring 8, semicircle draw-in groove 5 is provided with semicircle card 10, jump-ring slot 6 arranges jump ring；Piston 7 endoporus is provided with the female thread matched with external screw thread 2, become placed against on the left of semicircle card 10 in its right end face with piston 7, semicircle card 10 periphery is provided with semicircle card overcoat 9, semicircle card overcoat 9 left end face becomes placed against its right end face at piston 7, the its right end face at semicircle card overcoat 9 is become placed against on the left of jump ring, being provided with protecting cap 11 on the right side of jump ring, protecting cap 11 carries out axial restraint by clamp nut.
As shown in Figure 1-2, a kind of novel piston head attachment structure, piston rod head is provided with external screw thread 2, and external screw thread effect mainly increases axially loaded, prevents piston from circumferentially rotating and axial play；
Seal groove is made up of the first seal groove 3 and the second seal groove 4, is mounted on sealing ring 8 in the first seal groove 3 and the second seal groove 4, and in the present embodiment, sealing ring 8 is O RunddichtringO；The effect of sealing ring mainly prevents from producing between piston and axle leakage further；
Hemisect is formed by semicircle card 10 by after annulus overall processing, for dissection type mounting structure；Semicircle card plays the effect to piston axially loaded, enhances the bearing capacity of piston, changes loosening of in the past only causing with nut check；The outside diameter of semicircle card 10 is more than the internal diameter of piston 7.
Semicircle card overcoat 9 mainly constraint semicircle card, prevents semicircle card from departing from, the radial motion of constraint semicircle card；
Jump ring effect is the axially-movable of constraint semicircle card overcoat；
Protecting cap 11 is annular catch, Main Function be when jump ring is of long duration occur fracture or sewage character to its corrosion ineffective time, stop semicircle card overcoat play.
A kind of novel piston head attachment structure that the utility model proposes, under the equal diameter of axle, axial load ability has obtained significantly strengthening, piston is fixed the most accordingly at circumferential and axial, safety factor has obtained further increase, ensure the compact siro spinning technology of piston and piston rod, be particularly well-suited to load occasion high-power, big.
Claims (6)
1. a novel piston head attachment structure, including piston rod (1) and the piston (7) that is arranged on piston rod (1) head；It is characterized in that: on described piston rod (1) head cylindrical, be sequentially provided with external screw thread (2), seal groove, semicircle draw-in groove (5) and jump-ring slot (6), sealing ring (8) it is provided with in described seal groove, being provided with semicircle card (10) in described semicircle draw-in groove (5), described jump-ring slot arranges jump ring in (6)；Described piston (7) endoporus is provided with the female thread matched with described external screw thread (2), described semicircle card (10) left side becomes placed against in its right end face with described piston (7), described semicircle card (10) periphery is provided with semicircle card overcoat (9), described semicircle card overcoat (9) left end face becomes placed against its right end face in described piston (7), the its right end face described semicircle card overcoat (9) is become placed against on the left of described jump ring, protecting cap (11) it is provided with on the right side of described jump ring, described protecting cap (11) carries out axial restraint by clamp nut.
A kind of novel piston head attachment structure the most according to claim 1, it is characterized in that: described seal groove is made up of the first seal groove (3) and the second seal groove (4), in the first seal groove (3) and the second seal groove (4), be mounted on sealing ring (8).
A kind of novel piston head attachment structure the most according to claim 2, it is characterised in that: described sealing ring (8) is O RunddichtringO.
A kind of novel piston head attachment structure the most according to claim 1, it is characterised in that: hemisect is formed by described semicircle card (10) by after annulus overall processing, for dissection type mounting structure.
A kind of novel piston head attachment structure the most according to claim 1, it is characterised in that: the outside diameter of described semicircle card (10) is more than the internal diameter of piston (7).
A kind of novel piston head attachment structure the most according to claim 1, it is characterised in that: described protecting cap (11) is annular catch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620222128.7U CN205478653U (en) | 2016-03-22 | 2016-03-22 | Novel piston head connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620222128.7U CN205478653U (en) | 2016-03-22 | 2016-03-22 | Novel piston head connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478653U true CN205478653U (en) | 2016-08-17 |
Family
ID=56651261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620222128.7U Active CN205478653U (en) | 2016-03-22 | 2016-03-22 | Novel piston head connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205478653U (en) |
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2016
- 2016-03-22 CN CN201620222128.7U patent/CN205478653U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |