CN201739494U - Special air-cylinder piston rod for hump speed reducer - Google Patents
Special air-cylinder piston rod for hump speed reducer Download PDFInfo
- Publication number
- CN201739494U CN201739494U CN2010202751500U CN201020275150U CN201739494U CN 201739494 U CN201739494 U CN 201739494U CN 2010202751500 U CN2010202751500 U CN 2010202751500U CN 201020275150 U CN201020275150 U CN 201020275150U CN 201739494 U CN201739494 U CN 201739494U
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- Prior art keywords
- rod
- piston rod
- cylinder piston
- rod head
- smooth
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- Expired - Lifetime
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- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
The utility model provides a special air-cylinder piston rod for a hump speed reducer, comprising an end part, a rod part and a rod head, wherein the end part and the rod head are respectively located at the two ends of the rod part, the rod head which is a step-shaped shaft comprises an external thread part and a smooth part connected with a piston, the end part is provided with a front end hole in which a reinforced fixing sleeve tightly attached to the hole wall is arranged, the rod head also comprises a curved surface transition structure between the smooth part and the rod part, and the top end of the rod head is also provided with a pin shaft part on which a pin hole is arranged. The special air-cylinder piston rod for the hump speed reducer has the following benefits: as the strength of the hole wall of the front end hole is enhanced, the air-cylinder piston rod cannot be easily cracked; as the connecting transition position between the rod head and the rod body adopts smooth transition, stress concentration is eliminated and the safety factor is increased; as the position of the piston is fixed by the pin shaft part, displacement is prevented; as the rod head is the step-shaped shaft, the maximum thrust area of an air cylinder can be maintained at the same time as the strength of the wall thickness is met.
Description
Technical field
The utility model relates to a kind of piston rod, especially relates to a kind of cylinder piston rod of hump decelerator special use.
Background technique
Cylinder piston rod is the power unit of hump decelerator special use, as main power transmission part, the cylinder piston rod structure need satisfy the join strength requirement of the required maximum ouput force of hump decelerator to piston rod, also needs to have the characteristics of being convenient to field maintenance simultaneously.But the bar of the cylinder piston rod that uses footpath is thinner at present, the front aperture hole wall is thinner, using impact lower piston rod front aperture to deform, even fracture, the bar head that connects piston simultaneously is general tool withdrawal groove with the intermediate location that is connected of the body of rod, causes that easily stress concentrates, and causes fracture, exist safe and reliable coefficient low, influence problems such as working efficiency.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, piston rod that intensity is really up to the mark, safe and reliable, especially is fit to the cylinder piston rod of hump decelerator special use.
The technical solution of the utility model is:
A kind of cylinder piston rod of hump decelerator special use, comprise end, bar portion and bar head, described end and bar head lay respectively at the two ends of described bar portion, described bar head is stepped axle, comprise male thread portion and the smooth that is connected with piston, there is a front aperture described end, is provided with a reinforcement fixed cover of being close to hole wall in the described front aperture.
Preferably, described bar head also comprises the surface blending structure between described smooth and described bar portion.
Preferably, described surface blending structure is the smooth curved surface that chamfering and circular arc are formed by connecting, the connection part rounding off.
Preferably, described bar crown end also is provided with the bearing pin part, has pin-and-hole on the described bearing pin part.
Preferably, described reinforcement fixed cover is a copper sheathing.
Advantage and the good effect that the utlity model has are:
Owing to adopt technique scheme, the front aperture hole wall intensity of piston rod increases, not easy-rupturing; The body of rod is a rounding off with connection intermediate location between the bar head that is connected piston, has eliminated the phenomenon that stress is concentrated, and improves safety coefficient; The existence of bearing pin part can prevent the displacement of piston; The bar head is stepped axle, when satisfying wall thickness intensity, keeps the area of thrust surface of cylinder maximum; Have simple in structurely, easy to maintenance, processing cost is low, the manufacturing efficiency advantages of higher.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an assembling schematic representation of the present utility model.
Among the figure:
1, end 2, bar portion 3, bar head 4, front aperture
5, smooth 6, male thread portion 7, reinforcement fixed cover 8, surface blending structure
9, bearing pin part 10, pin-and-hole 11, piston 12, end cap
13, bearing pin
Embodiment
The utility model is described in further detail below in conjunction with the drawings and the specific embodiments.
As depicted in figs. 1 and 2, the utility model comprises end 1, bar portion 2 and bar head 3, end 1 and bar head 3 lay respectively at the two ends of bar portion 2, bar head 3 is stepped axle, comprises male thread portion 6 and the smooth 5 that is connected with piston 11, and there is a front aperture 4 end 1, be provided with a reinforcement fixed cover 7 of being close to hole wall in the described front aperture 4, strengthening fixed cover 7 is copper sheathing, and male thread portion 6 links to each other with structures such as baffle plate, end caps 12, guarantees that piston 11 is unshift.In use, stair-stepping bar head 3 not only satisfies wall thickness intensity, guarantees the maximum thrust area of cylinder simultaneously; Strengthening fixed cover 7 has increased the intensity of front aperture 4, makes it be difficult for breaking; Bar head 3 also comprises the surface blending structure 8 between described smooth 5 and described bar portion 2, surface blending structure 8 is the smooth curved surface that chamfering and circular arc are formed by connecting, the connection part rounding off, the stress concentration phenomenon has been eliminated in slick and sly transition, has improved intensity; Bar head 3 tops also are provided with bearing pin part 9, have pin-and-hole 10 on the described bearing pin part 9, have an outside bearing pin 13 to be inserted in the pin-and-hole 10, fix the position of piston 11, prevent displacement.
Above mode of execution has been described in detail the utility model, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limit practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (5)
1. the cylinder piston rod of a hump decelerator special use, comprise end (1), bar portion (2) and bar head (3), described end (1) and bar head (3) lay respectively at the two ends of described bar portion (2), described bar head (3) is stepped axle, comprise male thread portion (6) and the smooth (5) that is connected with piston (11), there is a front aperture (4) described end (1), it is characterized in that: be provided with a reinforcement fixed cover (7) of being close to hole wall in the described front aperture (4).
2. the cylinder piston rod of hump decelerator special use according to claim 1 is characterized in that: described bar head (3) also comprises the surface blending structure (8) that is positioned between described smooth (5) and the described bar portion (2).
3. the cylinder piston rod of hump decelerator special use according to claim 2 is characterized in that: described surface blending structure (8) is the smooth curved surface that chamfering and circular arc are formed by connecting, the connection part rounding off.
4. according to the cylinder piston rod of any one described hump decelerator special use among the claim 1-3, it is characterized in that: described bar head (3) top also is provided with bearing pin part (9), has pin-and-hole (10) on the described bearing pin part (9).
5. the cylinder piston rod of hump decelerator special use according to claim 1 is characterized in that: described reinforcement fixed cover (7) is a copper sheathing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202751500U CN201739494U (en) | 2010-07-29 | 2010-07-29 | Special air-cylinder piston rod for hump speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202751500U CN201739494U (en) | 2010-07-29 | 2010-07-29 | Special air-cylinder piston rod for hump speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739494U true CN201739494U (en) | 2011-02-09 |
Family
ID=43554769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202751500U Expired - Lifetime CN201739494U (en) | 2010-07-29 | 2010-07-29 | Special air-cylinder piston rod for hump speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739494U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128261A (en) * | 2011-03-07 | 2011-07-20 | 成都三环金属制品有限公司 | Connecting structure and installation method for piston and piston rod |
| CN102889381A (en) * | 2012-10-31 | 2013-01-23 | 宁波培源电器制造有限公司 | Piston rod |
| CN103752796A (en) * | 2014-02-13 | 2014-04-30 | 江苏博众汽车部件有限公司 | Piston air cylinder for pressure casting |
-
2010
- 2010-07-29 CN CN2010202751500U patent/CN201739494U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128261A (en) * | 2011-03-07 | 2011-07-20 | 成都三环金属制品有限公司 | Connecting structure and installation method for piston and piston rod |
| CN102889381A (en) * | 2012-10-31 | 2013-01-23 | 宁波培源电器制造有限公司 | Piston rod |
| CN103752796A (en) * | 2014-02-13 | 2014-04-30 | 江苏博众汽车部件有限公司 | Piston air cylinder for pressure casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN RAILWAY SIGNAL CO., LTD. Free format text: FORMER NAME: TIANJIN RAILWAY SIGNAL FACTORY |
|
| CP03 | Change of name, title or address |
Address after: 300300 Tianjin city Dongli District Road No. 1199 a Patentee after: Tianjin Railway Signal Co., Ltd. Address before: 300300 No. 1, Tianjin Road, Dongli, China Patentee before: Tianjin Railway Signal Factory |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |