CN201610874U - Gear-and-rack swing hydraulic cylinder - Google Patents
Gear-and-rack swing hydraulic cylinder Download PDFInfo
- Publication number
- CN201610874U CN201610874U CN2009202475705U CN200920247570U CN201610874U CN 201610874 U CN201610874 U CN 201610874U CN 2009202475705 U CN2009202475705 U CN 2009202475705U CN 200920247570 U CN200920247570 U CN 200920247570U CN 201610874 U CN201610874 U CN 201610874U
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Abstract
A gear-and-rack swing hydraulic cylinder belongs to hydraulic executive components in mechanical equipment, and is characterized in that a shaft block is arranged in the center at one end of a piston; corresponding to the shaft block, a U-shaped shaft groove capable of accommodating the shaft block is formed on the end surface of a rack shaft; the shaft block on the end surface of the piston is placed in the U-shaped shaft groove, so as to ensure that the piston is a float-type piston; a sealing combination comprising a U-shaped ring, a bearing ring and a Glyd ring is distributed on the circumferential surface of the piston; a bearing sleeve is mounted in the housing in which the rack shaft is mounted; an inclined surface capable of accommodating the lower half part of a gear shaft is formed on the circumferential surface of the bearing sleeve; and a clearance is formed between the external diameter of the gear shaft and the inclined surface.
Description
Technical field the utility model belongs to the hydraulic actuator of machinery, particularly need not any gear and just can make load directly obtain the gear rack oscillating motor of a kind of new structure of reciprocally swinging.
Background technique is present, in the various mechanisms of equipment such as harbour, metallurgy, electric power, executive component-gear rack oscillating motor as output high pulling torque in several angle, because it need not any gear and just can make load directly obtain the specific function of reciprocally swinging, is used widely.The gear rack oscillating motor is made up of cylinder cap, cylinder barrel, piston, Sealing, rack shaft, gear shaft, housing, symmetry is equipped with piston in cylinder barrel, with on the piston circumferential surface that touches mutually in the cylinder barrel or dress U-shaped seal ring or adopt Sealings such as Glais ring, rack shaft at the piston end surface center to be threaded and to be meshed with gear shaft, rack shaft is contained in the housing, start hydraulic transmission, piston makes gear shaft make reciprocally swinging with regard to left and right promotion tooth bar.In use the problem of Chu Xianing mainly is the leakage of oil owing to wearing and tearing cause sealing more relatively poor, and in long-term the use, because the bad leakage of oil of sealing is even more serious, the shortcoming and defect part of its existence is described below:
1, piston and rack shaft are one or fixedly connected with screw thread, under the effect of radial force, the copper sheathing meeting fair wear and tear of supporting tooth bar, piston is along with tooth bar produces radial displacement, produce radial force between piston and the cylinder barrel, when sliding, scratch the cylinder barrel internal surface, and make the inner wall of cylinder abrasion deformation become non-circular, let out in must causing.
2, the independent employing rubber rectangular ring that has of piston seal, the Sealing of this material weares and teares in reciprocating motion of the pistons comparatively fast, causes sealing to be easy to lose efficacy; The independent employing U-shaped circle or the Glais ring that have, but their independent using effect are not very desirable, because the metal filings that produces in the gear rack transmission is in to-and-fro motion, be easy to be stuck between primary seal and the cylinder barrel, destroy primary seal, scratch cylinder barrel, let out in also producing, have in addition enter hydraulic system, hydraulic system is produced harm.
3, the supporting tooth bar is a bit of brasses, produce under the radial force in the gear rack transmission, and the tooth bar to-and-fro motion, the brasses wearing and tearing are very fast, cause piston along with tooth bar produces radial displacement, destroy sealing, let out in the generation.
The summary of the invention the purpose of this utility model is to remedy above-mentioned the deficiencies in the prior art part, and provides and can reduce wear, and has sealing again reliably, and the gear rack oscillating motor of a kind of new structure rational in infrastructure.
The purpose of this utility model is to adopt following technological scheme to realize: the gear rack oscillating motor comprises cylinder cap, cylinder barrel, piston, Sealing, rack shaft, gear shaft, housing is formed, it is characterized in that: there is a piece at an end center of piston, corresponding with the axle piece, end face at rack shaft has the U profile shaft groove that can hold a piece, axle piece on the piston end surface is inserted in the U profile shaft groove, make piston be floating type piston, on the piston circumferential surface, be furnished with seal combination, the housing built-in hold bearing sleeve of rack shaft is being housed, on the circumferential surface of supporting sleeve, have the inclined-plane that can hold gear shaft lower half portion, and between gear shaft external diameter and inclined-plane spacing is arranged.Be located at the axle piece at piston end surface center, its transverse section or circular or square, on the rack shaft end face, have accordingly and hold a piece or circular or square U profile shaft groove, after the axle piece on the piston is inserted U profile shaft groove, when motion, piston can float in U type groove, so be called floating type piston; After the copper sheathing fair wear and tear of supporting rack shaft, piston can effectively not prevent sliding contact between tooth bar or axle sleeve wearing and tearing back piston and the cylinder barrel along with rack shaft produces radial displacement, consequently scratches cylinder barrel and makes in the cylinder barrel wearing and tearing generation and let out; Described seal combination adopts unique mode, from left to right adorns the seal combination by U-shaped circle, supporting ring, Glais ring combination on the piston circumferential surface in regular turn; Its primary seal adopts the U-shaped circle one, reliably seals hydraulic oil, adopts Glais ring one near the gear rack drive cavity, can wipe impurity such as abrasive dust, dirt that the gear rack transmission produces off, and the protection primary seal is injury-free, prevents that dirt from entering hydraulic system; The low together wearing and tearing of middle employing, the supporting ring that frictional force is little prevent that piston from directly contacting with cylinder barrel; Described supporting sleeve, its end face has a step, and during assembling, a side of step leans against on the housing seam, and opposite side leans against on the end face of cylinder barrel, and during the tooth bar to-and-fro motion, supporting sleeve can not produce axial float.The comprehensive above technical measures of being taked realize the purpose of this utility model.
Compared with prior art, the utility model can reduce wear, improve wear resistance, have again sealing reliable, let out in preventing, and rational in infrastructure, advantage such as easy to install.
Description of drawings
Fig. 1 is the main TV structure simplified schematic diagram of specific embodiment of the utility model
Embodiment
In specific embodiment shown in Figure 1, its structure comprises: cylinder barrel 1, piston 2, U-shaped circle 3, supporting ring 4, Glais ring 5, rack shaft 6, supporting sleeve 7, gear shaft 8, housing 9, cylinder cap 10, axle piece 11, U-shaped axial trough 12, its concrete feature is: cylinder cap 10 is housed respectively on cylinder barrel 1, floating type piston 2 is housed respectively in cylinder barrel 1, there is the axle piece 11 of circular cross sections at the end face center of piston 2, corresponding with axle piece 11, end face in rack shaft 6 has rounded U-shaped axial trough 12, on the circumferential surface of the piston 2 that floats, adorn in regular turn respectively by U-shaped circle 3, supporting ring 4, the seal combination that Glais ring 5 is formed, in housing 9, supporting sleeve 7 is housed, have the inclined-plane that can hold gear 8 lower half portions on the supporting sleeve 7, and between the circumferential surface of gear shaft 8 external diameters and supporting sleeve 7 spacing is arranged.
After the axle piece 11 on the piston was inserted U profile shaft groove 12, when motion, piston can float in U type groove 12, so be called floating type piston; After the copper sheathing fair wear and tear of supporting rack shaft 6, piston 2 can effectively not prevent sliding contact between tooth bar or axle sleeve wearing and tearing back piston 2 and the cylinder barrel 1 along with rack shaft 6 generation radial displacements, consequently scratches cylinder barrel 1 and makes in the cylinder barrel 1 wearing and tearing generation and let out; Its primary seal adopts the U-shaped circle one, reliably seals hydraulic oil, adopts Glais ring 5 one near the gear rack drive cavity, can wipe impurity such as abrasive dust, dirt that the gear rack transmission produces off, and the protection primary seal is injury-free, prevents that dirt from entering hydraulic system; Described supporting sleeve 7, its end face has a step, and during assembling, a side of step leans against on housing 9 seams, and opposite side leans against on the end face of cylinder barrel 1, and during the tooth bar to-and-fro motion, supporting sleeve 7 can not produce axial float.
Claims (1)
1. gear rack oscillating motor, comprise cylinder cap, cylinder barrel, piston, Sealing, rack shaft, gear shaft, housing is formed, it is characterized in that: there is a piece at an end center of piston, corresponding with the axle piece, end face at rack shaft has the U profile shaft groove that can hold a piece, axle piece on the piston end surface is inserted in the U profile shaft groove, make piston be floating type piston, on the piston circumferential surface, be furnished with seal combination, the housing built-in hold bearing sleeve of rack shaft is being housed, on the circumferential surface of supporting sleeve, have the inclined-plane that can hold gear shaft lower half portion, and between gear shaft external diameter and inclined-plane spacing is arranged, be located at the axle piece at piston end surface center, its transverse section or circular or square has accordingly on the rack shaft end face and holds a piece or circular or square U profile shaft groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202475705U CN201610874U (en) | 2009-10-27 | 2009-10-27 | Gear-and-rack swing hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202475705U CN201610874U (en) | 2009-10-27 | 2009-10-27 | Gear-and-rack swing hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610874U true CN201610874U (en) | 2010-10-20 |
Family
ID=42961507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202475705U Expired - Fee Related CN201610874U (en) | 2009-10-27 | 2009-10-27 | Gear-and-rack swing hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610874U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536956A (en) * | 2012-02-16 | 2012-07-04 | 长治清华机械厂 | Rotary oil cylinder for lorry-mounted crane |
| CN102556863A (en) * | 2012-02-16 | 2012-07-11 | 长治清华机械厂 | Revolution device for lorry-mounted crane |
| CN108757083A (en) * | 2018-05-25 | 2018-11-06 | 温州职业技术学院 | A kind of variable valve actuator for air of hydraulic-driven |
| CN110026460A (en) * | 2019-05-21 | 2019-07-19 | 杜宗英 | Dental chair headlamp annular rim U-shaped semi-finished product punching press symmetrically guarantees device |
-
2009
- 2009-10-27 CN CN2009202475705U patent/CN201610874U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536956A (en) * | 2012-02-16 | 2012-07-04 | 长治清华机械厂 | Rotary oil cylinder for lorry-mounted crane |
| CN102556863A (en) * | 2012-02-16 | 2012-07-11 | 长治清华机械厂 | Revolution device for lorry-mounted crane |
| CN108757083A (en) * | 2018-05-25 | 2018-11-06 | 温州职业技术学院 | A kind of variable valve actuator for air of hydraulic-driven |
| CN108757083B (en) * | 2018-05-25 | 2020-01-10 | 温州职业技术学院 | Hydraulically-driven variable valve mechanism |
| CN110026460A (en) * | 2019-05-21 | 2019-07-19 | 杜宗英 | Dental chair headlamp annular rim U-shaped semi-finished product punching press symmetrically guarantees device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Dalian Lianhe Technology Co., Ltd Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Dalian Lianhe Technology Co., Ltd Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101020 Termination date: 20121027 |