CN202608923U - Tensioning device of chassis walking mechanism of rotary drilling rig - Google Patents
Tensioning device of chassis walking mechanism of rotary drilling rig Download PDFInfo
- Publication number
- CN202608923U CN202608923U CN 201220301293 CN201220301293U CN202608923U CN 202608923 U CN202608923 U CN 202608923U CN 201220301293 CN201220301293 CN 201220301293 CN 201220301293 U CN201220301293 U CN 201220301293U CN 202608923 U CN202608923 U CN 202608923U
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- CN
- China
- Prior art keywords
- oil cylinder
- drilling rig
- ring
- rotary drilling
- tensioning device
- 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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Abstract
The utility model discloses a tensioning device of a chassis walking mechanism of a rotary drilling rig. The tensioning device consists of an oil cylinder, a shaft, a spring, a pull rod, a fork ring, a sealing piece and an oil injection valve, wherein the shaft is arranged at one end of the oil cylinder, one end of the shaft, extending out of the oil cylinder, is provided with the oil injection valve, the spring is arranged between the oil cylinder and the fork ring, the other end of the oil cylinder is connected with the pull rod through threads, the tail end of the pull rod is connected with the fork ring, the sealing piece is arranged at an opening of the oil cylinder, and the sealing piece is of an assembly consisting of a sealing ring and a supporting ring. The pull rod and the oil cylinder are connected by threads, so that the strength is high; and an oil cylinder body adopts a solid forged structure, so that the welding defect of the welding structure can be effectively prevented due to welding. The tensioning device is reasonable in structure, and good in sealing property through adopting a front sealing structure, and can bear large load and be high pressure-resistant.
Description
Technical field
The utility model relates to a kind of swelling device of rotary drilling rig, relates in particular to a kind of rotary drilling rig traveling gear crawler belt swelling device.
Background technology
Rotary drilling rig is the construction machinery and equipment of pore-forming operation in a kind of suitable building foundation engineering; General hydraulic pilot control, the load sensing of adopting of complete machine operation; Have and operate characteristics such as light, comfortable, be mainly used in foundation constructions such as urban construction, highway bridge, industry and civil construction, continuous concrete wall, water conservancy, antiseepage bank protection.Existing rotary drilling rig mainly comprises chassis, turntable, brill mast and luffing mechanism; Wherein the chassis is one of key and pith of whole rotary drilling rig; The chassis mainly comprises traveling gear and swing type mechanism; Said traveling gear comprises: main car frame, walker and be installed in four-wheel one band on the walker; Said four-wheel one band comprises: drive wheel, caterpillar wheel, guide wheel, track carrying wheel, crawler belt, in the structure of above-mentioned four-wheel one band, wherein the crawler belt swelling device has very big influence to the crawler travel performance.In the prior art, the main method of tensioner crawler belt comprises spring swelling method, oil cylinder tensioner method, screw rod tensioner method.Wherein the spring swelling method is owing to have certain proportionate relationship between the elastic force of spring and its scantling of structure; Spring undersized; Its elastic force is not enough to crawler belt is remained on the state of tensioner, spring oversize, and the restriction of the crawler belt physical construction that rises is difficult for installing and using; And adopt oil cylinder and screw rod tensioner method, and because the good rigidly of oil cylinder and screw rod is not yielding, when crawler belt received impulsive force, crawler belt can not keep it to be in the tensioner state at any time, the effect of its tensioner will be had a strong impact on.
Summary of the invention
The utility model technical matters to be solved is the deficiency that overcomes prior art, and a kind of crawler belt swelling device of rational in infrastructure, long service life is provided.
For solving this technical matters, the utility model provides a kind of rotary drilling rig chassis traveling gear swelling device, comprises oil cylinder, axle, spring, pull bar, fork ring, sealing member, fuel feeding valve; One end of said oil cylinder is equipped with axle; An end that stretches out oil cylinder of said axle is provided with fuel feeding valve, between said oil cylinder and fork ring, spring is installed, and the other end of said oil cylinder is through the pull bar that has been threaded; The end of said pull bar is connected with the fork ring, and said sealing member is arranged at nearly cylinder ports place.
Said sealing member is the assembly of seal ring and support ring.
The place is provided with dust seal in cylinder ports.
Said oil cylinder adopts the solid forging structure.
Beneficial effect: pull bar of the utility model and oil cylinder adopt and are threaded, and intensity is high; Cylinder block adopts the solid forging structure, has effectively prevented welded structure because the weld defect that welding causes.The utility model is rational in infrastructure, adopts preposition seal structure, good seal performance, can bear big load, and is high pressure resistant.
Description of drawings
Fig. 1 is the structural representation front view of the utility model;
Fig. 2 is the structural representation left view of the utility model.
Among the figure: 1 fork ring, 2 oil cylinders, 3,4 springs, 5 pull bars, 8 fuel feeding valves, 9 seal rings, 10 support rings, 11 dust seals.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done specific descriptions.
Fig. 1 is the structural representation front view of the utility model.
Fig. 2 is the structural representation left view of the utility model.
The utility model provides a kind of rotary drilling rig chassis traveling gear swelling device; Comprise oil cylinder 2, axle 3, spring 4, pull bar 5, fork ring 1, sealing member, fuel feeding valve 8; One end of said oil cylinder 2 is equipped with axle 3, and an end that stretches out oil cylinder 2 of said axle 3 is provided with fuel feeding valve 8.
Mounting spring 4 between said oil cylinder 2 and fork ring 1.
The other end of said oil cylinder 2 is through the pull bar 5 that has been threaded, and pull bar 5 adopts with oil cylinder 2 and is threaded, and intensity is high.
The end of said pull bar 5 is connected with fork ring 1.
Said sealing member is the assembly of seal ring 9 and support ring 10, and the existence of support ring has prevented that effectively seal ring is influenced by pressure or temperature and produces deformation failure.
Said sealing member is arranged at 2 mouthfuls of places of nearly oil cylinder, adopts preposition seal structure, good seal performance, can bear big load, and is high pressure resistant.
Be provided with dust seal 11 at the cylinder ports place, can prevent effectively that dust from getting into cylinder interior, guarantee oil cylinder in-to-in cleanliness level, increased the service life of seal ring.
Said oil cylinder 2 adopts the solid forging structure, has effectively prevented welded structure because the weld defect that welding causes.
The above-mentioned embodiment of the utility model, just casehistory is not only, all in the utility model scope or the change that is equal in the scope of the utility model all surrounded by the utility model.
Claims (4)
1. rotary drilling rig chassis traveling gear swelling device; Comprise oil cylinder (2), axle (3), spring (4), pull bar (5), fork ring (1), sealing member, fuel feeding valve (8); One end of said oil cylinder (2) is equipped with axle (3); An end that stretches out oil cylinder (2) of said axle (3) is provided with fuel feeding valve (8), mounting spring (4) between said oil cylinder (2) and fork ring (1), and it is characterized in that: the other end of said oil cylinder (2) is through the pull bar that has been threaded (6); The end of said pull bar (6) is connected with fork ring (1), and said sealing member is arranged at nearly oil cylinder (2) mouthful place.
2. rotary drilling rig according to claim 1 chassis traveling gear swelling device is characterized in that: said sealing member is the assembly of seal ring (9) and support ring (10).
3. rotary drilling rig according to claim 1 chassis traveling gear swelling device is characterized in that: a mouthful place is provided with dust seal (11) at oil cylinder (2).
4. according to claim 1,2 or 3 described rotary drilling rig chassis traveling gear swelling devices, it is characterized in that: said oil cylinder (2) adopts the solid forging structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220301293 CN202608923U (en) | 2012-06-26 | 2012-06-26 | Tensioning device of chassis walking mechanism of rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220301293 CN202608923U (en) | 2012-06-26 | 2012-06-26 | Tensioning device of chassis walking mechanism of rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202608923U true CN202608923U (en) | 2012-12-19 |
Family
ID=47342645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220301293 Expired - Fee Related CN202608923U (en) | 2012-06-26 | 2012-06-26 | Tensioning device of chassis walking mechanism of rotary drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202608923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015823A (en) * | 2014-05-30 | 2014-09-03 | 天津柳工机械有限公司 | Pull rod and expanding device with pull rod |
-
2012
- 2012-06-26 CN CN 201220301293 patent/CN202608923U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015823A (en) * | 2014-05-30 | 2014-09-03 | 天津柳工机械有限公司 | Pull rod and expanding device with pull rod |
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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: 20121219 Termination date: 20150626 |
|
| EXPY | Termination of patent right or utility model |