CN201807873U - Rolling device for surface of inside and outside oil seal grooves of piston of power shift transmission of engineering machinery - Google Patents
Rolling device for surface of inside and outside oil seal grooves of piston of power shift transmission of engineering machinery Download PDFInfo
- Publication number
- CN201807873U CN201807873U CN2010205423090U CN201020542309U CN201807873U CN 201807873 U CN201807873 U CN 201807873U CN 2010205423090 U CN2010205423090 U CN 2010205423090U CN 201020542309 U CN201020542309 U CN 201020542309U CN 201807873 U CN201807873 U CN 201807873U
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- piston
- oil seal
- power shift
- cup
- columnar body
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Abstract
The utility model relates to a rolling device for the surfaces of inside and outside oil seal grooves of a piston of a power shift transmission of engineering machinery, belonging to the technical field of engineering machinery. The rolling device is used for enhancing the surface quality of the inside and outside oil seal grooves of the piston. The rolling device comprises a rolling head and an elastic seat, wherein the rolling head comprises a columnar main body, a rotating shaft, a bearing, a press cover and a rolling wheel, wherein the rear end of the columnar main body is connected with a machine tool turret through the elastic seat, and the front end surface is provided with a stepped hole; the bearing is sleeved on the rotating shaft and fixed in the stepped hole of the columnar main body through the press cover; the rolling wheel is coaxial with the rotating shaft and fixedly connected with one end of the rotating shaft, which extends out of the press cover of the bearing, and the width of the rolling wheel is matched with the width of the inside and outside oil seal grooves of the piston of the power shift transmission of a bulldozer. The utility model has simple structure and low cost and can enhance the surface quality of the inside and outside oil seal grooves of the piston of the power shift transmission of the bulldozer, ensure the sealing property of the power shift transmission of the bulldozer, prolong the service life of the integral bulldozer and reduce the maintaining cost of the bulldozer.
Description
Technical field
The utility model relates to a kind of being used for oil seal groove inside and outside the engineering machinery dynamic power shift gear box piston is carried out rolling and processing, to improve the device of its surface quality, belongs to technical field of engineering machinery.
Background technology
The engineering machinery transmission dynamic power shift gear box generally adopts hydraulic power, the surfaces externally and internally of dynamic power shift gear box piston is provided with the oil sealing groove, the piston ring (material is a polytetrafluoroethylene) that oil sealing is used is housed in the oil sealing groove, during dynamic power shift gear box work, piston ring is close in the oil sealing groove and with piston back and forth movement in piston seat, if the surface quality of oil sealing bottom land is poor, roughness is low, will influence the sealing property between piston ring and the oil sealing groove, cause the piston ring leakage of oil, oil pressure reduces, and then causes gearbox shifting to be short of power.At present, the oil sealing groove generally adopts the turning moulding, and its surface roughness can not satisfy the requirement (generally requiring oil sealing rooved face roughness should reach Ra0.8) of roughness, and wearability is relatively poor, and service life is shorter.If the employing grinding-shaping though can make oil sealing rooved face roughness reach requirement, can not guarantee that machining accuracy and processing cost are too high, make us being difficult to accepting.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of oil seal groove surface quality and low inside and outside oil seal groove surface rolling device of engineering machinery dynamic power shift gear box piston of processing cost of improving is provided.
The alleged problem of the utility model realizes with following technical proposals:
The inside and outside oil seal groove surface rolling device of a kind of engineering machinery dynamic power shift gear box piston, form by milled head and spring support, described milled head is by columnar body, rotating shaft, bearing, bearing gland and roller are formed, the rear end of described columnar body is connected with lathe cutter platform by spring support, the end face of front end is provided with coaxial with it shoulder hole, described bearing holder (housing, cover) is contained on the rotating shaft and is fixed on by gland in the shoulder hole of columnar body, described roller and rotating shaft coaxle are also fixedlyed connected with the end that revolving spindle goes out bearing gland, and the inside and outside oil seal groove of its width and engineering machinery dynamic power shift gear box piston is complementary.
The inside and outside oil seal groove surface rolling device of above-mentioned engineering machinery dynamic power shift gear box piston, comprise cup-shaped pedestal and alignment pin that the columnar body rear end external diameter of internal diameter and milled head is complementary in the formation of described spring support, described cup-shaped pedestal is sleeved on the columnar body rear end and is fixed on the lathe cutter platform by positioning handle, described alignment pin places in the oval pin-and-hole of pin-and-hole on the cup-shaped holders body sidewall and columnar body rear end, is provided with butterfly spring between the interior end of described cup-shaped pedestal and the columnar body rear end face.
The inside and outside oil seal groove surface rolling device of above-mentioned engineering machinery dynamic power shift gear box piston, be provided with the milled head caging bolt coaxial in the screwed hole of described cup-shaped pedestal bottom centre with the cup-shaped pedestal, the centre bore that the end that described milled head caging bolt is positioned at cup-shaped pedestal inside passes butterfly spring is relative with the columnar body rear end face, and an end that is positioned at the cup-shaped holders external body is provided with adjusting knob.
The inside and outside oil seal groove surface rolling device of above-mentioned engineering machinery dynamic power shift gear box piston, described bearing is two deep groove ball bearings that are stacked together.
The utility model utilizes the inside and outside oil seal groove of pair of rollers engineering machinery dynamic power shift gear box piston to carry out rolling and processing, the surface roughness of oil seal groove is reached more than the Ra0.8, improved the sealing property between piston ring and the oil sealing groove greatly, avoided the leakage of hydraulic oil, guarantee oil sealing pressure, improved the complete machine performance.The columnar body of milled head adopts oval pin-and-hole to be connected with the cup-shaped pedestal, the compressible butterfly spring of milled head in the roll extrusion process, to floating, amount of floating can be by the adjusting knob adjustment along the cup-shaped holders axon, and this structure is convenient to cooperating between the oil seal groove inside and outside roller and the piston.
After using the utility model that oil seal groove inside and outside the piston is carried out rolling and processing, wearing and tearing and cut wound in the time of not only can reducing piston ring and pack piston groove into, the piston ring life-span is improved greatly, and the loose oil seal groove superficial density of casting is increased, improve the wearability on oil seal groove surface, prolonged the service life of piston.
In a word, the utility model is simple in structure, and is with low cost, can improve the surface quality of the inside and outside oil seal groove of engineering machinery dynamic power shift gear box piston, guarantees the sealing property of engineering machinery dynamic power shift gear box, prolongs the service life of complete machine, reduces its maintenance cost.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Fig. 4 is the A-A cutaway view;
Fig. 5 is the utility model roll extrusion piston water jacket schematic diagram;
Fig. 6 is the utility model roll extrusion piston inside groove schematic diagram;
Fig. 7 is the cutaway view of piston.
Each label is among the figure: 1, adjusting knob; 2, butterfly spring; 3, pad; 4, cup-shaped pedestal; 5, alignment pin; 6, columnar body; 7, clamp nut; 8, packing ring; 9, bearing; 10, gland; 11, rotating shaft; 12, roller; 13, positioning handle; 14, piston; 15; Inside groove; 16, water jacket; 17, milled head caging bolt.
The specific embodiment
Referring to Fig. 1～Fig. 4, the utility model comprises milled head and spring support two parts, connects with alignment pin 5 between the two, and milled head is the main device for carrying out said of roll extrusion, is made up of columnar body 6, bearing 9, gland 10, rotating shaft 11, roller 12.Bearing 9(two cover deep groove ball bearings are housed on the rotating shaft 11), and compress with packing ring 8 and clamp nut 7, rotating shaft 11 and bearing 9 are packed in the shoulder hole of columnar body 6 front ends simultaneously, lock with gland 10, with bolt roller 12 is connected with rotating shaft 11 again.
Spring support is made up of cup-shaped pedestal 4, alignment pin 5, butterfly spring 2, milled head caging bolt 17, four pairs of butterfly springs 2 are equipped with in cup-shaped pedestal 4 inside, a pad 3(pad 3 is adorned not necessarily in butterfly spring 2 front portions, can cancel), pad 3 usefulness columnar body 6 compress, and there is a screwed hole at the center, rear end of cup-shaped pedestal 4, interior dress milled head caging bolt 17, milled head caging bolt 17 front ends withstand on the pad 3, and the rear end is provided with adjusting knob 1, are used for adjusting the amount of floating backward of milled head.
Using method of the present utility model is as follows:
Referring to Fig. 5, Fig. 6, pack into the positioning handle 13 of spring support in the lathe cutter platform and compress, piston 14 usefulness special toolings are clamped on the engine lathe, centering cylindrical and end face run-out≤0.02mm, workpiece is rotated, mobile cutter platform with the roller on the milled head 12 to aliging with the piston cannelure, the width of roller 12 is than the little 0.1mm of width of piston groove, and roller 12 is free to rotate, with hand moving horizontal slide carriage roller 12 is shaken to carrying out roll extrusion with slowly exerting pressure after bottom land contacts along piston grooves, the roll extrusion power of roller is 20-25kg, and the part rotating speed is 75-100r/min during roll extrusion, and the duration of roll extrusion is 1 minute.
The utility model can guarantee the surface roughness of piston groove effectively, it is reached more than the Ra0.8, strengthened sealing property, wearing and tearing and cut wound when piston ring is packed piston groove into have so not only been reduced, the piston ring life-span is improved greatly, oil sealing pressure is normal, and cast than tissue density's increase after the roll extrusion of the loose surface process, having improved the piston groove surface abrasion resistance, piston ring is fitted in piston groove closely, avoided draining, gearbox shifting is smooth and easy, flexible movements, and power reaches designing requirement, reduce maintenance cost, improved the complete machine performance.
Claims (4)
1. the inside and outside oil seal groove surface rolling device of an engineering machinery dynamic power shift gear box piston, it is characterized in that, this device is made up of milled head and spring support, described milled head is by columnar body (6), rotating shaft (11), bearing (9), bearing gland (10) and roller (12) are formed, the rear end of described columnar body (6) is connected with lathe cutter platform by spring support, the end face of front end is provided with coaxial with it shoulder hole, described bearing (9) is sleeved on rotating shaft (11) and goes up and be fixed in the shoulder hole of columnar body (6) by gland (10), described roller (12) is coaxial with rotating shaft (11) and fixedly connected with an end of rotating shaft (11) projecting shaft pressure cap (10), and the inside and outside oil seal groove of its width and bull-dozer dynamic power shift gear box piston is complementary.
2. according to oil seal groove surface rolling device inside and outside the described engineering machinery dynamic power shift gear box of claim 1 piston, it is characterized in that, comprise cup-shaped pedestal (4) and alignment pin (5) that columnar body (6) the rear end external diameter of internal diameter and milled head is complementary in the formation of described spring support, described cup-shaped pedestal (4) is sleeved on columnar body (6) rear end and is fixed on the lathe cutter platform by positioning handle (13), described alignment pin (5) places in the oval pin-and-hole of pin-and-hole on cup-shaped pedestal (4) sidewall and columnar body (6) rear end, is provided with butterfly spring (2) between the interior end of described cup-shaped pedestal (4) and columnar body (6) rear end face.
3. according to oil seal groove surface rolling device inside and outside the described engineering machinery dynamic power shift gear box of claim 2 piston, it is characterized in that, be provided with the milled head caging bolt (17) coaxial in the screwed hole of described cup-shaped pedestal (4) bottom centre with cup-shaped pedestal (4), described milled head caging bolt (17) is positioned at the inner end of cup-shaped pedestal (4), and to pass the centre bore of butterfly spring (2) relative with columnar body (6) rear end face, and an end that is positioned at cup-shaped pedestal (4) outside is provided with adjusting knob (1).
4. according to oil seal groove surface rolling device inside and outside claim 1 or the 2 described engineering machinery dynamic power shift gear box pistons, it is characterized in that described bearing (9) is two deep groove ball bearings that are stacked together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205423090U CN201807873U (en) | 2010-09-26 | 2010-09-26 | Rolling device for surface of inside and outside oil seal grooves of piston of power shift transmission of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205423090U CN201807873U (en) | 2010-09-26 | 2010-09-26 | Rolling device for surface of inside and outside oil seal grooves of piston of power shift transmission of engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201807873U true CN201807873U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205423090U Expired - Fee Related CN201807873U (en) | 2010-09-26 | 2010-09-26 | Rolling device for surface of inside and outside oil seal grooves of piston of power shift transmission of engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201807873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941132A (en) * | 2010-09-26 | 2011-01-12 | 河北宣化工程机械股份有限公司 | Surface rolling device of inner oil seal groove and outer oil seal groove of power shift transmission piston in construction machinery |
-
2010
- 2010-09-26 CN CN2010205423090U patent/CN201807873U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941132A (en) * | 2010-09-26 | 2011-01-12 | 河北宣化工程机械股份有限公司 | Surface rolling device of inner oil seal groove and outer oil seal groove of power shift transmission piston in construction machinery |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20160926 |