CN202451156U - Oil cylinder for coal mining machine - Google Patents
Oil cylinder for coal mining machine Download PDFInfo
- Publication number
- CN202451156U CN202451156U CN2012200227651U CN201220022765U CN202451156U CN 202451156 U CN202451156 U CN 202451156U CN 2012200227651 U CN2012200227651 U CN 2012200227651U CN 201220022765 U CN201220022765 U CN 201220022765U CN 202451156 U CN202451156 U CN 202451156U
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- Prior art keywords
- oil cylinder
- piston rod
- cylinder
- connecting plate
- coal
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Abstract
The utility model discloses an oil cylinder for a coal mining machine. The oil cylinder comprises an oil cylinder main body, a protecting cover and a fixing mechanism. The protecting cover comprises a connecting plate and a large sleeve. The oil cylinder main body comprises a piston rod and a cylinder body. The connecting plate and the piston rod are fixed through the fixing mechanism. The large sleeve is sleeved outside the cylinder body, is supported on the cylinder body, and can slide relative to the cylinder body. The connecting plate is a square connecting plate. A connecting plate inner square hole of the square connecting plate is matched with a connecting plate outer square shaft of the piston rod, and the protecting cover and the piston rod are relatively fixed through the fixing mechanism. According to the oil cylinder for the coal mining machine, by utilizing the protecting cover which is relatively fixed with the piston rod and can be expanded and contracted along with the piston rod along the cylinder body of the oil cylinder, the problem of abrasion to the piston rod of the oil cylinder of a thin seam coal mining machine is solved.
Description
Technical field
The utility model belongs to coal mine machinery equipment technology field, relates to a kind of coal-winning machine, relates in particular to a kind of coal-winning machine oil cylinder guard shield.
Background technology
China coal seam geological condition complicacy, the particularly girdle of China, the whole nation has a very wide distribution, and geological structure is complicated, mining equipment type selecting difficulty, exploitation rate is slow.Along with in thick and above coal seam by progressively exploitation, thinner seam and girdle have become the main mining coal seam of China.Effective exploitation of girdle has become the matter of great urgency.The urgent need exploitation of girdle mainly contains two big reasons: one, can improve resource recovery greatly, avoid the wasting of resources; Two,, avoid gas etc. to influence the security needs of other seam mining as the needs of liberation layer exploitation.
The low seam mining machinery fuselage is short, and the space is little; The girdle complicated geological condition, tomography, dirt band stone are intricate; Thereby make the low seam mining machinery oil cylinder often be in the condition work of very severe, the piston rod that particularly stretches out running under the wearing and tearing such as hard spoil, coal, causes the oil cylinder leakage of oil to use, and reduces application life greatly.
In order to improve the duty of coal-winning machine oil cylinder, the dealer proposes the coal-winning machine oil cylinder and adopts mounting means such as upside-down mounting to attempt to solve this wear problem; But because the limitation of the installation site of low seam mining machinery oil cylinder; Space, oil cylinder installation place is little; Long-pending coal (spoil) phenomenon is serious; A large amount of coals, spoil are often all being piled up with the below, rear end in oil cylinder front end below, and the mounting means of this upside-down mounting can't fundamentally solve the wear problem of oil cylinder piston bar.
For the low seam mining machinery oil cylinder, the coal-winning machine oil cylinder of particularly under more work plane such as spoil, hard coal, exploiting, urgent need will find a kind of wear problem of device solves oil cylinder piston bar.
The utility model content
The utility model technical problem to be solved is: a kind of coal-winning machine oil cylinder guard shield is provided, can solves the protection problem of coal-winning machine oil cylinder piston bar.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of coal-winning machine oil cylinder, said oil cylinder comprises: oil cylinder main body, guard shield, fixed mechanism;
Said guard shield comprises junction plate, big sleeve, and the oil cylinder main body comprises piston rod, cylinder body; Junction plate is fixed through fixed mechanism and piston rod; Big jacket casing is supported in cylinder body, and can slides relatively with cylinder body outside cylinder body.
As a kind of preferred version of the utility model, said junction plate is a square connecting plate, and square hole cooperates with the outer square shaft of the junction plate of piston rod in the junction plate of square connecting plate, makes guard shield and piston rod relative fixed through fixed mechanism.
As a kind of preferred version of the utility model, when two flexible extreme positions, large cylinder is supported in cylinder body to said piston rod all the time with respect to cylinder body.
As a kind of preferred version of the utility model, said fixed mechanism is a pivot pin.
The beneficial effect of the utility model is: the coal-winning machine oil cylinder that the utility model proposes, utilize relative fixed also can solve the wear problem of low seam mining machinery oil cylinder piston bar with piston rod along the flexible guard shield of cylinder block in piston rod.
Description of drawings
Fig. 1 is the structural representation of the utility model coal-winning machine oil cylinder.
Fig. 2 is the side sectional view of the utility model coal-winning machine oil cylinder.
Fig. 3 is the structural representation of the connecting hole of guard shield and piston rod.
The specific embodiment
Specify the preferred embodiment of the utility model below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, Fig. 2, the utility model has disclosed a kind of coal-winning machine oil cylinder, and said oil cylinder comprises: oil cylinder main body 3, guard shield 1, fixed mechanism 2; Said fixed mechanism 2 is a pivot pin 2.
Said guard shield 1 comprises junction plate 11, big sleeve 12, and oil cylinder main body 3 comprises piston rod 31, cylinder body 32; Junction plate 11 is fixing with piston rod 31 through pivot pin 2; Big sleeve 12 is enclosed within outside the cylinder body 32, is supported in cylinder body 32, and can slides relatively with cylinder body 32.
Please combine Fig. 3, square hole 111 cooperates with the outer square shaft 311 of the junction plate of oil cylinder piston bar 31 in the junction plate of square connecting plate 11, prevents that coal dust from entering into the chamber of exposing of piston rod; Big sleeve 12 is supported in cylinder block 32 and can slides relatively, and big sleeve 12 forms with cylinder block 32 and cooperates installation, prevents that coal dust from entering into the chamber of exposing of piston rod.
When two flexible extreme positions, large cylinder 12 is supported in cylinder block 32 to oil cylinder piston bar 31 all the time, makes piston rod be in guard mode all the time with respect to cylinder block 32.
Bearing pin 2 is arranged in oil cylinder guard shield 1 and the oil cylinder piston bar 31 simultaneously; Big sleeve 12 is sheathed on outside the cylinder block 32; Install simple and reliable, easy to maintenance, practical.
Here description of the utility model and application is illustrative, is not to want the scope of the utility model is limited in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation of spirit that does not break away from the utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to the embodiment that is disclosed.
Claims (4)
1. a coal-winning machine oil cylinder is characterized in that, said oil cylinder comprises: oil cylinder main body, guard shield, fixed mechanism;
Said guard shield comprises junction plate, big sleeve, and the oil cylinder main body comprises piston rod, cylinder body; Junction plate is fixed through fixed mechanism and piston rod; Big jacket casing is supported in cylinder body, and can slides relatively with cylinder body outside cylinder body.
2. coal-winning machine oil cylinder according to claim 1 is characterized in that:
Said junction plate is a square connecting plate, and square hole cooperates with the outer square shaft of the junction plate of piston rod in the junction plate of square connecting plate, makes guard shield and piston rod relative fixed through fixed mechanism.
3. coal-winning machine oil cylinder according to claim 1 is characterized in that:
When two flexible extreme positions, large cylinder is supported in cylinder body to said piston rod all the time with respect to cylinder body.
4. according to the described coal-winning machine oil cylinder of one of claim 1 to 3, it is characterized in that:
Said fixed mechanism is a pivot pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200227651U CN202451156U (en) | 2012-01-18 | 2012-01-18 | Oil cylinder for coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200227651U CN202451156U (en) | 2012-01-18 | 2012-01-18 | Oil cylinder for coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451156U true CN202451156U (en) | 2012-09-26 |
Family
ID=46867025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200227651U Expired - Fee Related CN202451156U (en) | 2012-01-18 | 2012-01-18 | Oil cylinder for coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451156U (en) |
-
2012
- 2012-01-18 CN CN2012200227651U patent/CN202451156U/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: 20120926 Termination date: 20130118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |