CN203891879U - Coal cutter rocker arm and novel seal structure of DO type floating oil seal for coal cutter rocker arm - Google Patents
Coal cutter rocker arm and novel seal structure of DO type floating oil seal for coal cutter rocker arm Download PDFInfo
- Publication number
- CN203891879U CN203891879U CN201420208096.6U CN201420208096U CN203891879U CN 203891879 U CN203891879 U CN 203891879U CN 201420208096 U CN201420208096 U CN 201420208096U CN 203891879 U CN203891879 U CN 203891879U
- Authority
- CN
- China
- Prior art keywords
- chamber
- float grease
- grease seal
- rocker arm
- seal
- 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 - Lifetime
Links
- 239000003245 coal Substances 0.000 title claims abstract description 33
- 238000007667 floating Methods 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 239000004519 grease Substances 0.000 claims description 77
- 230000008878 coupling Effects 0.000 claims description 33
- 238000010168 coupling process Methods 0.000 claims description 33
- 238000005859 coupling reaction Methods 0.000 claims description 33
- 238000005065 mining Methods 0.000 claims description 22
- 238000010276 construction Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a coal cutter rocker arm and a novel seal structure of a DO type floating oil seal for the coal cutter rocker arm. The seal structure comprises a drum connecting sleeve, an end cover, a floating oil seal, a first seat cavity, a second seat cavity, screws, pins and O-shaped sealing rings; the first seat cavity is mounted in the drum connecting sleeve, the dynamic floating seal ring assembly of the floating oil seal is mounted in the first seat cavity, the second seat cavity is mounted in the end cover, and the static floating seal ring assembly of the floating oil seal is mounted in the second seat cavity. The first seat cavity and the drum connecting sleeve are sealed by use of the O-shaped sealing ring, positioned by use of the pin and axially connected by use of the screw, and the second seat cavity and the end cover are sealed by use of the O-shaped sealing ring, positioned by use of the pin and axially connected by use of the screw. The novel seal structure of the DO type floating oil seal for the coal cutter rocker arm has the advantages that the floating oil seal is prevented from being damaged and then the drum connecting sleeve and the end cover can be prevented from being damaged together; as the cost of the end cover, in particular the drum connecting sleeve, is far higher than that of the floating oil seal, unnecessary economic loss can be avoided.
Description
Technical field
The utility model belongs to coal excavation apparatus technical field, relates to a kind of rocker arm of coal mining machine DO type float grease seal novel sealing structure.
Background technology
Under coal mine, in production practices, after rocker arm of coal mining machine damages with DO type float grease seal, cracked floating sealing ring often damages its chamber; If float grease seal seat chamber and cylinder coupling sleeve or end cover designs are into a single integrated structure, after floating oil sealing envelope is damaged, often cause the damage of cylinder coupling sleeve and end cap, the cost of end cap, especially cylinder coupling sleeve, far above float grease seal, will cause serious economic loss.
Cylinder coupling sleeve size and weight are larger, and processing is inconvenient, and float grease seal groove dimensions is higher to requirement on machining accuracy, therefore often causes the processing of float grease seal groove dimensions not in place, causes the initial failure of float grease seal;
In addition, due to reasons such as narrow space, instrument under mine are incomplete and rather dark, in the time that producing coal work plane carries out the replacing of float grease seal, be difficult to be seated, there is the float grease seal not long phenomenon losing efficacy service time, had a strong impact on reliability and the production efficiency of coal-winning machine.
In view of this, nowadays in the urgent need to designing a kind of new rocking arm DO type float grease seal hermetically-sealed construction, to overcome the above-mentioned defect of existing hermetically-sealed construction.
Utility model content
Technical problem to be solved in the utility model has: (1) provides a kind of rocker arm of coal mining machine DO type float grease seal novel sealing structure, after preventing that float grease seal from damaging, cylinder coupling sleeve and end cap is damaged, and causes larger economic loss; (2) the machining accuracy problem of float grease seal groove dimensions; (3) float grease seal is in the more difficult assembling of producing coal work plane or assemble the problems such as not in place.
In addition, the utility model also provides a kind of rocker arm of coal mining machine, can prevent from causing after float grease seal from damaging the damage of the damage of cylinder coupling sleeve and end cap.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
DO type float grease seal novel sealing structure for a kind of rocker arm of coal mining machine, described hermetically-sealed construction comprises: cylinder coupling sleeve, end cap, float grease seal, First chamber, second chamber, pin, screw and O-ring seals;
Described First chamber is arranged in cylinder coupling sleeve, and the moving floating sealing ring assembly of float grease seal is arranged in First chamber; Between First chamber and cylinder coupling sleeve, adopt O-ring seals to carry out radially or axial seal;
Described second chamber is arranged in end cap, and the quiet floating sealing ring assembly of float grease seal is arranged in second chamber; Between second chamber and end cap, adopt O-ring seals to carry out radially or axial seal;
As a kind of preferred version of the present utility model, the O-ring seals diameter between the O-ring seals diameter between described First chamber and cylinder coupling sleeve and second chamber and end cap, is chosen as 1.8mm, 2.65mm, 3.55mm, 5.3mm and 7mm according to bulk;
As a kind of preferred version of the present utility model, between described First chamber and cylinder coupling sleeve, carry out radial location, be axially connected with screw with pin;
As a kind of preferred version of the present utility model, between described second chamber and end cap, carry out radial location, be axially connected with screw with pin;
As a kind of preferred version of the present utility model, the maximum radial dimension of described float grease seal floating sealing ring is not less than 500mm.
First chamber in accompanying drawing, second chamber, the first O-ring seals, the second O-ring seals, float grease seal, pin and screw can be made to assembly-float grease seal assembly.When there is float grease seal assembly demand production line, this assembly is complete in the assembling of coal-winning machine producer, then mail to scene, only need simply seal, locate and be connected the replacing that can realize float grease seal.
The beneficial effects of the utility model are: (1), according to technique scheme, after float grease seal damages, is likely damaged First chamber or second chamber, but can not cause the damage of cylinder coupling sleeve and end cap, have avoided unnecessary loss; (2) cylinder coupling sleeve and First chamber, end cap and second chamber are designed to split formula structure, avoid processing the higher sizes of required precision such as float grease seal groove on cylinder coupling sleeve or the such heavy parts of end cap, facilitated the processing of cylinder coupling sleeve and end cap; (3) First chamber, second chamber size, weight are less, more easily ensure the machining accuracy of float grease seal groove dimensions, are conducive to improve the dependability of float grease seal; (4) assembling of float grease seal be improved to ground-mounted or assembled by coal-winning machine producer by down-hole assembling, significantly having improved the assembling effect of float grease seal, being conducive to extend the application life of float grease seal; Novel DO type float grease seal hermetically-sealed construction is taken behind scene, and shop floor worker can use after only needing simply to seal, position, axially connect with screw with pin with O shape circle.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model rocker arm of coal mining machine DO type float grease seal novel sealing structure.
concrete enforcementexample
mode
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment mono-
Refer to Fig. 1, the utility model has disclosed a kind of rocker arm of coal mining machine DO type float grease seal novel sealing structure, and described sealing mechanism comprises: cylinder coupling sleeve 1, end cap 2, pin 3, the first O-ring seals 4, First chamber 5, float grease seal 6, second chamber 7, the second O-ring seals 8 and screw 9.Described First chamber 5 is arranged in cylinder coupling sleeve 1, and the moving floating sealing ring assembly in float grease seal 6 is installed in First chamber 5; Described second chamber 7 is arranged in end cap 2, and the quiet floating sealing ring assembly in float grease seal 6 is arranged in second chamber 7.The maximum radial dimension of the floating sealing ring in float grease seal 6 is not less than 500mm.
Between described First chamber 5 and cylinder coupling sleeve 1, be provided with the first O-ring seals 4; Between second chamber 7 and end cap 2, be provided with the second O-ring seals 8.First chamber 5, second chamber 7 can adopt that pin positions, screw is axially connected respectively with between cylinder coupling sleeve 1, end cap 2.
Pin 3 shown in Fig. 1, the first O-ring seals 4, First chamber 5, float grease seal 6, second chamber 7, the second O-ring seals 8 and screw 9 are referred to as float grease seal assembly; This assembly can be assembled at coal mine ground, also can be assembled by the professional of coal-winning machine producer.After the on-the-spot float grease seal of producing coal damages, directly change this assembly, can realize float grease seal convenient, efficiently, change reliably.
DO type float grease seal novel sealing structure for the rocker arm of coal mining machine the utility model proposes, solve following problem: after (1) avoids float grease seal to damage, cylinder coupling sleeve is damaged together with end cap, the cost of end cap, especially cylinder coupling sleeve, far above float grease seal, has been avoided unnecessary economic loss; (2) due to cylinder coupling sleeve size and weight larger, processing get up difficulty larger; Float grease seal First chamber and cylinder coupling sleeve are designed to, after split formula structure, simplify the processing of cylinder coupling sleeve; (3) due to First chamber size and weight less, more easily processing, can improve the machining accuracy of float grease seal groove, is conducive to improve the dependability of float grease seal; (4) under mine because the light is dusky, the reason such as the complete and narrow space of instrument, float grease seal is difficult to be seated; Adopt the rocker arm of coal mining machine that the utility model discloses to use after DO type float grease seal novel sealing structure, the assembling of float grease seal can be improved to ground-mounted or be assembled by coal-winning machine producer by down-hole assembling, significantly improve the assembling effect of float grease seal, be conducive to extend the application life of float grease seal; Novel sealing structure is taken behind scene, and shop floor worker only needs simply to seal, to position, carry out axial connection can use with screw with pin with O shape circle.
Here description of the present utility model and application is illustrative, not wants scope of the present utility model to limit in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and for those those of ordinary skill in the art, the various parts of the replacement of embodiment and equivalence are known.Those skilled in the art are noted that in the situation that not departing from spirit of the present 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.In the situation that not departing from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (10)
1. a DO type float grease seal novel sealing structure for rocker arm of coal mining machine, is characterized in that, described hermetically-sealed construction comprises: cylinder coupling sleeve, end cap, float grease seal, First chamber, second chamber, pin, screw and O-ring seals; Described First chamber is arranged in cylinder coupling sleeve, and the first float grease seal is arranged in First chamber; Described second chamber is arranged in end cap, and the second float grease seal is arranged in second chamber.
2. DO type float grease seal novel sealing structure for rocker arm of coal mining machine according to claim 1, is characterized in that, described float grease seal comprises moving floating sealing ring assembly and quiet floating sealing ring assembly.
3. DO type float grease seal novel sealing structure for rocker arm of coal mining machine according to claim 1, is characterized in that, the moving floating sealing ring assembly of described float grease seal comprises moving floating sealing ring and O shape circle; The quiet floating sealing ring assembly of described float grease seal comprises quiet floating sealing ring and O shape circle; Described float grease seal move floating sealing ring, quiet floating sealing ring radially maximum size be not less than 500mm.
4. DO type float grease seal novel sealing structure for rocker arm of coal mining machine according to claim 1, is characterized in that, described First chamber is arranged in cylinder coupling sleeve; The moving floating sealing ring assembly of described float grease seal is arranged in First chamber.
5. DO type float grease seal novel sealing structure for rocker arm of coal mining machine according to claim 1, is characterized in that, described second chamber is arranged in end cap; The quiet floating sealing ring assembly of described float grease seal is arranged in second chamber.
6. DO type float grease seal novel sealing structure for rocker arm of coal mining machine according to claim 1, is characterized in that, between described First chamber and cylinder coupling sleeve, be respectively equipped with O-ring seals between second chamber and end cap and seal.
7. DO type float grease seal novel sealing structure for rocker arm of coal mining machine according to claim 1, is characterized in that, between described First chamber and cylinder coupling sleeve, between second chamber and end cap, sealing means comprises radial seal and two kinds of modes of axial seal.
8. DO type float grease seal novel sealing structure for rocker arm of coal mining machine according to claim 1, is characterized in that, described O-ring seals diameter of section comprises 1.8mm, 2.65mm, 3.55mm, 5.3mm and 7mm; Described cotter diameter comprises 8mm, 10mm, 12mm, 16mm and 20mm; Described screw thread diameter comprises M8, M10, M12, M16, M20.
9. DO type float grease seal novel sealing structure for rocker arm of coal mining machine according to claim 1, is characterized in that, between described First chamber and cylinder coupling sleeve, carry out radial location with pin between second chamber and end cap; Between described First chamber and cylinder coupling sleeve, be axially connected with screw between second chamber and end cap.
10. a rocker arm of coal mining machine, is characterized in that, described rocker arm of coal mining machine comprises float grease seal sealing mechanism, and described sealing mechanism comprises: cylinder coupling sleeve, end cap, the first float grease seal, the second float grease seal, First chamber, second chamber; Described First chamber is arranged in cylinder coupling sleeve, and the first float grease seal is arranged in First chamber; Described second chamber is arranged in end cap, and the second float grease seal is arranged in second chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208096.6U CN203891879U (en) | 2014-04-25 | 2014-04-25 | Coal cutter rocker arm and novel seal structure of DO type floating oil seal for coal cutter rocker arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208096.6U CN203891879U (en) | 2014-04-25 | 2014-04-25 | Coal cutter rocker arm and novel seal structure of DO type floating oil seal for coal cutter rocker arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203891879U true CN203891879U (en) | 2014-10-22 |
Family
ID=51718295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420208096.6U Expired - Lifetime CN203891879U (en) | 2014-04-25 | 2014-04-25 | Coal cutter rocker arm and novel seal structure of DO type floating oil seal for coal cutter rocker arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203891879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924973A (en) * | 2014-04-25 | 2014-07-16 | 天地上海采掘装备科技有限公司 | Rocker arm of coal mining machine and novel sealing structure of DO (Dissolved Oxygen) floating oil seal for rocker arm of coal mining machine |
-
2014
- 2014-04-25 CN CN201420208096.6U patent/CN203891879U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924973A (en) * | 2014-04-25 | 2014-07-16 | 天地上海采掘装备科技有限公司 | Rocker arm of coal mining machine and novel sealing structure of DO (Dissolved Oxygen) floating oil seal for rocker arm of coal mining machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103062419A (en) | Steel forged refrigeration valve | |
| CN202251961U (en) | Mechanical sealing device | |
| CN203891879U (en) | Coal cutter rocker arm and novel seal structure of DO type floating oil seal for coal cutter rocker arm | |
| CN204164340U (en) | Built-up piston seal arrangement | |
| CN103924973A (en) | Rocker arm of coal mining machine and novel sealing structure of DO (Dissolved Oxygen) floating oil seal for rocker arm of coal mining machine | |
| CN204628436U (en) | The RV speed reducer of high performance structures | |
| CN104712710A (en) | High-performance structure RV reduction machine | |
| CN202416308U (en) | Connecting structure of tubular pieces used in drill pile foundations | |
| CN102518801B (en) | Special faucet washing pipe compound sealing device for petroleum drilling machine | |
| CN105298410A (en) | Drill rod connector | |
| CN202327109U (en) | Water faucet flushing pipe composite sealing device special for petroleum drilling machine | |
| CN104121441A (en) | Mass flow water cooling and rotating device | |
| CN204553786U (en) | A kind of modified model oil seal system | |
| CN202228415U (en) | Overall integrated mechanical seal device for centrifugal pump | |
| CN204327927U (en) | A kind of floating sealing structure of continuous miner shipping device reducer | |
| CN204493720U (en) | The split type fixing seal device of stirrer main shaft | |
| CN205618165U (en) | Shaft drilling machine cutting -tool with real -time supervision cutter rotational speed function | |
| CN101532498A (en) | Mechanical seal of multilayer sludge pump | |
| CN202273634U (en) | Sealing structure for pressure test plug of oil well casing | |
| CN203948287U (en) | Oil transfer gear pump mechanism | |
| CN202012500U (en) | Single spring mechanical sealing device for sealing smudgy medium | |
| CN203614793U (en) | Ball valve | |
| CN200940595Y (en) | Novel serial machine seal structure for light and medium load chemical pump | |
| CN204299929U (en) | Inlet high pressure pump machine seals axle sleeve | |
| CN209818291U (en) | Split combined structure of rotor type mining slurry pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |
|
| CX01 | Expiry of patent term |