CN202031911U - Limiting tension cylinder for tunneller - Google Patents
Limiting tension cylinder for tunneller Download PDFInfo
- Publication number
- CN202031911U CN202031911U CN2011200920299U CN201120092029U CN202031911U CN 202031911 U CN202031911 U CN 202031911U CN 2011200920299 U CN2011200920299 U CN 2011200920299U CN 201120092029 U CN201120092029 U CN 201120092029U CN 202031911 U CN202031911 U CN 202031911U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston rod
- tensioning hydro
- gland
- clamp
- Prior art date
- 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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- Clamps And Clips (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model discloses a limiting tension cylinder for tunneller, which comprises a rod head (1), a gland (4), a cylinder seat (5), a tension cylinder (6) and a piston rod (7), wherein a check ring (2) is arranged at the end part of the piston rod (7); a plug-in type clamp plate (3) is arranged on the piston rod (7) between the check ring (2) and the gland (4); and the clamp plate (3) is a circular ring capable of containing the inlet and the outlet gaps of the piston rod (7). The limiting tension cylinder remains undamaged under the load action of big load impact, has a simple and reasonable structural design, is convenient and reliable to mount, prolongs the service life, and reduces the failure rate.
Description
Technical field
The utility model relates to a kind of oil cylinder, and the scraper chain tension device that particularly relates to a kind of mining equipment development machine first transport airplane adopts the differential cylinder limit structure.
Background technique
At present, domestic development machine scraper chain adopts the tension device of oil cylinder tensioning form, all adopts two-way cylinder and infinite place structure, and tensioning hydro-cylinder is easy to damage under the heavy load impact loading.
The model utility content
Technical problem to be solved in the utility model provides a kind of can not the damage and the spacing tensioning hydro-cylinder of the reliable development machine of tensioning under the heavy load impact loading.
In order to solve the problems of the technologies described above, the spacing tensioning hydro-cylinder of development machine that the utility model adopts, comprise bar head, gland, oil cylinder seat, tensioning hydro-cylinder and piston rod thereof, tensioning hydro-cylinder is installed on the oil cylinder seat by gland, the piston rod top of tensioning hydro-cylinder is provided with the bar head, end at described piston rod is provided with back-up ring, is provided with the clamp that can plug on the piston rod that is between described back-up ring and the described gland.
The structure of described clamp is the annulus that is provided with the breach that can hold described piston rod turnover.
Described bar head is that the head circle of position is spherical.
Adopt the spacing tensioning hydro-cylinder of development machine of technique scheme, by changing the tensioning hydro-cylinder structure, increase clamp and can realize the spacing of tensioning hydro-cylinder, after the tension device tensioning is finished, clamp is installed on piston rod, making that piston rod head is stressed acts on oil cylinder seat through back-up ring, clamp, gland, increases the working life of tensioning hydro-cylinder.The bar head is that the head circle of position is spherical, the power unit of tensioning; Back-up ring with bar head and the piston rod structure that links into an integrated entity, plays the effect of locating clamp plate; Clamp plays the spacing effect of piston rod; Gland is with the stressed effect that reaches oil cylinder seat of clamp; Oil cylinder seat is fixed on the back chute of first transport airplane of development machine, plays the supporting effect of oil cylinder; Tensioning hydro-cylinder is a differential cylinder, and after tensioning was finished, the oil pressure off-load made the oil cylinder cavity power that do not withstand shocks, and tension force and stroke of tension are provided.
In sum, the spacing tensioning hydro-cylinder of the novel development machine of this use has following characteristics:
1, structural design is simple, reasonable, easy for installation, reliable;
2, the increase of spacing clamp, more reliable realization chain tension in the working life of improving tensioning hydro-cylinder, reduces rate of fault.
Description of drawings
Fig. 1 is an oil cylinder tension device sectional drawing;
Fig. 2 is a clamp design of part schematic representation;
Fig. 3 installs sectional drawing for clamp.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, tensioning hydro-cylinder 6 is installed on the oil cylinder seat 5 by gland 4, piston rod 7 tops of tensioning hydro-cylinder 6 are provided with the spherical bar head 1 of head circle of position, are provided with back-up ring 2 in the end of piston rod 7, be provided with the clamp 3 that can plug on the piston rod 7 that is between back-up ring 2 and the gland 4, the structure of clamp 3 is the annulus 9 that is provided with the breach 8 that can hold piston rod 7 turnover.
As shown in Figure 1, tensioning hydro-cylinder 6 is inserted oil cylinder seat 5 from the left side, gland 4 is connected with oil cylinder seat 5 by screw, and back-up ring 2 is fixed on the bar head 1, with tensioning hydro-cylinder 6 by being threaded; Oil cylinder seat 5 is fixed on the chute side plate of back.
As Fig. 1, Fig. 2 and shown in Figure 3,, adjust the tightness of scraper chain by the overhang of tensioning hydro-cylinder 6, when scraper chain reaches predetermined degree of dangling, insert one or more clamp 3 from piston rod 7, after slotting the leaning on clamp 3 is moved to correct position, realize the spacing of tensioning hydro-cylinder 6.When the material transportation produced excessive load, under the effect of clamp 3, tensioning hydro-cylinder 6 can not withdrawn automatically, guaranteed the elasticity of scraper chain, reduced rate of fault, strengthened the working life of oil cylinder, improved conveying efficiency.
Claims (3)
1. spacing tensioning hydro-cylinder of development machine, comprise bar head (1), gland (4), oil cylinder seat (5), tensioning hydro-cylinder (6) and piston rod (7) thereof, tensioning hydro-cylinder (6) is installed on the oil cylinder seat (5) by gland (4), piston rod (7) top of tensioning hydro-cylinder (6) is provided with bar head (1), it is characterized in that: be provided with back-up ring (2) in the end of described piston rod (7), on the piston rod (7) that is between described back-up ring (2) and the described gland (4), be provided with the clamp (3) that can plug.
2. the spacing tensioning hydro-cylinder of development machine according to claim 1 is characterized in that: described clamp (3) is for being provided with the annulus that can hold described piston rod (7) turnover breach.
3. the spacing tensioning hydro-cylinder of development machine according to claim 1 and 2 is characterized in that: described bar head (1) is spherical for the head circle of position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200920299U CN202031911U (en) | 2011-03-31 | 2011-03-31 | Limiting tension cylinder for tunneller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200920299U CN202031911U (en) | 2011-03-31 | 2011-03-31 | Limiting tension cylinder for tunneller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031911U true CN202031911U (en) | 2011-11-09 |
Family
ID=44894209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200920299U Expired - Fee Related CN202031911U (en) | 2011-03-31 | 2011-03-31 | Limiting tension cylinder for tunneller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031911U (en) |
-
2011
- 2011-03-31 CN CN2011200920299U patent/CN202031911U/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 |
Granted publication date: 20111109 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |