CN203297605U - Split type piston and piston rod structure - Google Patents
Split type piston and piston rod structure Download PDFInfo
- Publication number
- CN203297605U CN203297605U CN2013203391597U CN201320339159U CN203297605U CN 203297605 U CN203297605 U CN 203297605U CN 2013203391597 U CN2013203391597 U CN 2013203391597U CN 201320339159 U CN201320339159 U CN 201320339159U CN 203297605 U CN203297605 U CN 203297605U
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- China
- Prior art keywords
- piston
- rod
- piston rod
- attachment hole
- valve rod
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- 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
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- 238000010276 construction Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a split type piston and piston rod structure. The split type piston and piston rod structure comprises a piston rod (1) and a piston (2). The tail end of the piston rod (1) is provided with a connecting hole (3), and an internal thread (7) is arranged inside the connecting hole (3) and extends to the 3/5-4/5 of the connecting hole (3) from the opening end of the connecting hole (3). A connector (4) is arranged at the front end of the piston (2) and is composed of a polish rod part (5) and a threaded part (6) which is provided with an external thread (8) matched with the internal thread (7), the polish rod part (5) is provided with a groove (9) for being sleeved with a sealing ring, a valve rod containing cavity (13) through which a valve rod (11) can do axial reciprocating movement is formed inside the piston (2), and an oil way (14) communicated with the valve rod containing cavity (13) is arranged inside the piston (2). According to the split type piston and piston rod structure, the piston and the piston rod can be independently detached so that dismounting workload can be reduced. The replacement can be independently carried out so that and the purpose of saving energy can be achieved.
Description
Technical field
The utility model relates to the hydraulics field, is specifically a kind of piston rod construction of Split piston for stepping cylinder.
Background technique
At present, a kind of stepping cylinder is arranged, the piston rod of this stepping cylinder and piston are the integral type structure, and namely piston rod and piston are connected as a single entity, and both are inseparable.
Adopting the piston piston rod construction of above integral type to have advantages of is convenient to assemble, but also exist simultaneously some shortcomings: as just piston rod or piston, break down while needing repairing, need the piston piston rod construction of whole integral type is dismantled, and can not separately piston rod or piston be dismantled, therefore the integral demounting workload is large, and, as need requiring integral replacing during replacing, so just relatively waste.
The model utility content
The technical problems to be solved in the utility model is, provides a kind of piston and piston rod to dismantle separately, to reduce the dismantlement work amount, and can change separately to reach the Split piston piston rod construction of saving purpose.
for solving the problems of the technologies described above, the technological scheme of the utility model Split piston piston rod construction is: it comprises piston rod and piston, the end of described piston rod is provided with attachment hole, be provided with internal thread in this attachment hole, this internal thread extends to 3/5～4/5 of attachment hole from the opening end of attachment hole, the front end of described piston is provided with connecting head, this connecting head consists of polished rod section and screw section, described screw section is provided with the outside thread that matches with internal thread, described polished rod section is provided with the groove for sheathed seal ring, be provided with the valve rod receiving cavity for the valve rod axially reciprocating in described piston, also be provided with the oil circuit that is communicated with the valve rod receiving cavity in described piston.
The bottom of described attachment hole also is provided with a receiving bore, and the diameter of this receiving bore is less than the diameter of attachment hole.
The valve rod receiving cavity that is positioned at the piston connector position is provided with axle sleeve.
After adopting above structure, the utlity model has following advantage: the piston of Split piston piston rod construction of the present utility model connects by screw thread with piston rod, that is to say that piston and piston rod are split-type structural, compared with prior art, split-type structural can be dismantled separately, convenient maintenance separately and replacing, and can reach the saving purpose.
As improvement, the bottom of described attachment hole also is provided with a receiving bore, and the diameter of this receiving bore is less than the diameter of attachment hole, can hold the end of head of the valve rod of stepping cylinder.
As improvement, the valve rod receiving cavity that is positioned at the piston connector position is provided with axle sleeve, and after this axle sleeve arranged, the valve rod head was sheathed in axle sleeve, and axle sleeve and valve rod head frictional force reduce, and this moment, valve rod more easily carried out axially reciprocating.
Description of drawings
Fig. 1 is that the utility model Split piston piston rod construction is loaded on the sectional structure schematic diagram (being unkitted valve rod) on stepping cylinder.
Fig. 2 is the sectional structure schematic diagram (being unkitted axle sleeve) that the piston of the utility model Split piston piston rod construction is equipped with valve rod.
Fig. 3 is the sectional structure schematic diagram of the piston rod of the utility model Split piston piston rod construction.
Fig. 4 is the sectional structure schematic diagram (axle sleeve is housed) of the piston of the utility model Split piston piston rod construction.
As shown in the figure: 1, piston rod, 2, piston, 3, attachment hole, 4, connecting head, 5, polished rod section, 6, screw section, 7, internal thread, 8, outside thread, 9, groove, 10, receiving bore, 11, valve rod, 12, axle sleeve, 13, the valve rod receiving cavity, 14, oil circuit, 15, cylinder body, 16, front cylinder base, 17, rear cylinder seat, 18, rod chamber, 19, rodless cavity.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in the figure, Split piston piston rod construction of the present utility model, it comprises piston rod 1 and piston 2.The end of described piston rod 1 is provided with attachment hole 3, be provided with internal thread 7 in this attachment hole 3, this internal thread 7 extends to 3/5～4/5 of attachment hole 3 from the opening end of attachment hole 3, and in the present embodiment, described internal thread 7 extends to 4/5 of attachment hole 3 from the opening end of attachment hole 3.The front end of described piston 2 is provided with connecting head 4, this connecting head 4 consists of polished rod section 5 and screw section 6, described screw section 6 is provided with the outside thread 8 that matches with internal thread 7, the groove 9 that described polished rod section 5 is provided with for sheathed seal ring, in the present embodiment, seal ring adopts O-ring seals, during use, this O-ring seals is inserted in groove 9 and can realizes sealing effect.Be provided with the valve rod receiving cavity 13 for valve rod 11 axially reciprocatings in described piston 2, also be provided with the oil circuit 14 that is communicated with valve rod receiving cavity 13 in described piston 2.
As the improvement project of the present embodiment, the bottom of described attachment hole 3 also is provided with a receiving bore 10, and the diameter of this receiving bore 10 is less than the diameter of attachment hole 3, and this receiving bore 10 is for the end of the head of the valve rod 11 that holds stepping cylinder; The valve rod receiving cavity 13 that is positioned at piston 2 connecting head 4 places is provided with axle sleeve 12, and the head of 12 pairs of valve rods 11 of this axle sleeve can play the effect of guide-localization.
Split piston piston rod construction of the present utility model is used in stepping cylinder, with cylinder body 15, front cylinder base 16, the rear cylinder seat 17 of stepping cylinder, forms rod chamber 18, rodless cavity 19 as shown in Figure 1 after assembling.Under external force, valve rod 11 is made reciprocal axial motion, do in the process of reciprocal axial motion at valve rod 11, rod chamber 18, the interior oil pressure pressure of rodless cavity 19 change, have pressure difference, this moment, piston 2 was made reciprocal axial motion under the pressure difference effect, because piston 2 adopts and is threaded with piston rod 1, therefore piston rod 1 is also made reciprocal axial motion, thereby realize the working procedure of stepping cylinder.Because whole working principle and process are prior art, therefore at this, simply describe.
The piston of Split piston piston rod construction of the present utility model and piston rod adopt and are threaded, and are split-type structural, can dismantle separately, and remove simply, conveniently, can meet maintenance separately or change requirement.
Claims (3)
1. Split piston piston rod construction, it is characterized in that: it comprises piston rod (1) and piston (2), the end of described piston rod (1) is provided with attachment hole (3), be provided with internal thread (7) in this attachment hole (3), this internal thread (7) extends to 3/5～4/5 of attachment hole (3) from the opening end of attachment hole (3), the front end of described piston (2) is provided with connecting head (4), this connecting head (4) consists of polished rod section (5) and screw section (6), described screw section (6) is provided with the outside thread (8) that matches with internal thread (7), described polished rod section (5) is provided with the groove (9) for sheathed seal ring, be provided with the valve rod receiving cavity (13) for valve rod (11) axially reciprocating in described piston (2), also be provided with the oil circuit (14) that is communicated with valve rod receiving cavity (13) in described piston (2).
2. Split piston piston rod construction according to claim 1, it is characterized in that: the bottom of described attachment hole (3) also is provided with a receiving bore (10), and the diameter of this receiving bore (10) is less than the diameter of attachment hole (3).
3. Split piston piston rod construction according to claim 1 is characterized in that: be positioned at the valve rod receiving cavity (13) that piston (2) connecting head (4) locates and be provided with axle sleeve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203391597U CN203297605U (en) | 2013-06-13 | 2013-06-13 | Split type piston and piston rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203391597U CN203297605U (en) | 2013-06-13 | 2013-06-13 | Split type piston and piston rod structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297605U true CN203297605U (en) | 2013-11-20 |
Family
ID=49573613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203391597U Expired - Fee Related CN203297605U (en) | 2013-06-13 | 2013-06-13 | Split type piston and piston rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297605U (en) |
-
2013
- 2013-06-13 CN CN2013203391597U patent/CN203297605U/en not_active Expired - Fee Related
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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: 20131120 Termination date: 20170613 |