CN104015823A - Pull rod and expanding device with pull rod - Google Patents
Pull rod and expanding device with pull rod Download PDFInfo
- Publication number
- CN104015823A CN104015823A CN201410243271.XA CN201410243271A CN104015823A CN 104015823 A CN104015823 A CN 104015823A CN 201410243271 A CN201410243271 A CN 201410243271A CN 104015823 A CN104015823 A CN 104015823A
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- China
- Prior art keywords
- pull bar
- rod
- pull rod
- oppositely
- ring
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Abstract
The invention discloses a pull rod which comprises a rod body, a flange integrally formed at the front end of the rod body and a limiting mechanism arranged at the tail of the rod body. The limiting mechanism comprises an annular groove formed in the tail of the rod body, an oppositely-opened ring and a pressing cover, the oppositely-opened ring and the pressing cover are embedded in the annular groove in a matched mode, a cavity capable of containing the oppositely-opened ring is formed in the front end of the pressing cover, and the back end of the pressing cover is located by a clamping ring relative to the rod body. By means of the pull rod, an oppositely-opened ring type limiting mechanism is adopted in the limiting mechanism of the pull rod, the oppositely-opened ring serves as a main bearing object of force, and the pressing cover only locates the oppositely-opened ring to prevent the oppositely-opened ring from dropping; compared with the structure that limiting is achieved through tail end threads and nuts in a matched mode, the pull rod is convenient to manufacture and machine, and meanwhile the assembly difficulty is reduced. Meanwhile, the flange is adopted at the front end of the pull rod for location, namely, location is achieved through steps, the structure is simple, assembling is easily achieved, the connecting strength is high, and meanwhile the pull rod can be effectively prevented from rotating through corresponding polygonal design.
Description
Technical field
The present invention relates to field of mechanical technique, particularly relate to a kind of pull bar and there is the swelling device of this pull bar.
Background technology
Crawler type traveling machine, as bulldozer etc., to have tractive force large, the advantages such as grounding pressure is low, the strong turn radius of hill climbing ability is little, therefore in engineering construction, extensively use, the running gear of crawler type traveling machine is for supporting body, driving engine is passed to the torque on drive wheel and rotatablely move to change the propulsive effort that promotes bulldozer work and travel into.Caterpillar belt tightening device is as the core component of crawler body system, to guarantee the suitable tensioner degree of crawler belt on the one hand, guaranteeing the drive efficiency of caterpillar system, is in the process of walking guide wheel and crawler belt to be encountered the absorption damping of obstacle on the other hand, promotes the life-span on whole chassis.
Pull bar is as the main stressed member in tightening device, and the precompressed compression of spring limits by pull bar.The pull bar of commonly using both at home and abroad at present in swelling device mainly adopts at front end fixing to prevent the rotation of pull bar by pin and front guide bracket, in rear end, by nut, the spacing of its relative rear guide bracket fixed in the cooperation of pull bar end with lock pad, this traditional Tiebar structure technique and assembling are complicated, and the degree of modularity is low.
Summary of the invention
The object of the invention is for the technological deficiency existing in prior art, and a kind of pull bar is provided and there is the swelling device of this pull bar.
For realizing the technical scheme that object of the present invention adopts, be:
A kind of pull bar, comprise the body of rod, be integrally formed in lever front end flange, with the stop gear that is arranged on described body of rod afterbody, described stop gear comprises the ring groove that forms body of rod afterbody, is embedded in matchingly the divided ring in described ring groove, and gland, described gland front end is formed with and described divided ring can be held to cavity wherein, and described gland rear end is located by the relative body of rod of snap ring.
The flange of described lever front end is polygonized structure, is formed with the polygon position-limited trough mating with described flange accordingly at the rear portion of the inner chamber of pull bar link.
Described body of rod center is formed with the oiling passage of axial perforation and is provided with oil hole to fuel feeding valve is installed at described body of rod afterbody.
Comprise front guide bracket, rear guide bracket and oil cylinder, described pull bar front end is communicated with the shoe cream room of oil cylinder.
Compared with prior art, the invention has the beneficial effects as follows:
The stop gear of pull bar of the present invention adopts splits ring type stop gear, and divided ring mainly holds receptor as power, and gland is just located divided ring and prevented that it from coming off, and than end thread nut, coordinates spacing structure, is convenient to manufacture processing, has reduced assembly difficulty simultaneously.Simultaneously pull bar front end adopts flange location, utilizes step location, simple in structure be easy to assembling and Joint strenght high, by corresponding polygon design, can effectively prevent that described pull bar from rotating simultaneously.
The present invention adopts the swelling device of this pull bar, utilizes the Oil Guide function of pull bar to simplify unit design, the operating effect while having improved oiling.
Accompanying drawing explanation
Figure 1 shows that the blast structural representation with pull bar of the present invention;
Figure 2 shows that the packaging cross section structure schematic diagram of the swelling device with pull bar of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As illustrated in fig. 1 and 2, pull bar of the present invention comprises the body of rod 1, be integrally formed in the flange 2 of lever front end, the stop gear of body of rod rear end is set, described stop gear comprises the ring groove 3 that forms body of rod afterbody, be embedded in matchingly the divided ring 4 in described ring groove, and gland 5, described gland front end is formed with and described divided ring can be held to cavity wherein, described gland rear end is located by the relative body of rod of snap ring 6, draw-in groove is also set on the body of rod of pull bar, from pull bar tail end, be inserted in and make divided ring to embed in the cavity of gland on gland, then snap ring is embedded in draw-in groove, utilize divided ring and snap ring the relative pull bar of gland can be located.
Ring type stop gear is split in employing, and divided ring mainly holds receptor as power, and gland is just located divided ring and prevented that it from coming off, and than end thread nut, coordinates spacing structure, is convenient to manufacture processing, has reduced assembly difficulty simultaneously.Front end adopts flange location simultaneously, utilize step location, simple in structure be easy to assembling and Joint strenght high, for preventing that described pull bar from rotating, the flange of described lever front end is polygonized structure, as hexagon or octagon, at the rear portion of the inner chamber with pull bar link, be formed with accordingly the polygon position-limited trough mating with described flange.Wherein, described pull bar link can be front guide bracket or rear guide bracket or miscellaneous part, because adopt step location, at corresponding connection parts part, can comprise inner chamber that a bottom base panel is formed with through hole to realize the connection of pull bar front end and corresponding pull bar link by step-like position limiting structure, in the present invention, by the Cross section Design of intracavity bottom, be that the polygonized structure corresponding with the cross section of flange is to form polygon position-limited trough, polygon position-limited trough can effectively prevent that with coordinating of flange both from relatively rotating, and then realizes the anti-rotation design of pull bar.
Meanwhile, for ease of oiling in swelling device, the body of rod center of described pull bar is formed with the oiling passage 7 of axial perforation and is provided with oilhole at described pull bar afterbody, and described pull bar front end is communicated with the shoe cream room of oil cylinder.By pull bar, as conduction, can change oiling position, improve operability.It is pointed out that being applicable to this novel pull bar can be the swelling device that comprises arbitrarily oil cylinder, only need the oiling channel connection of the shoe cream room of oil cylinder and this novel pull bar to realize the object of convenient oiling.
With pull bar, should be used as in the swelling device of front guide bracket and oil cylinder Integral design is further elaborated and illustrates below.
This swelling device comprises rear guide bracket 8, front guide bracket 9, axle 10, pull bar and be held the spring 11 being positioned between rear guide bracket and front guide bracket, wherein, described rear guide bracket cross section is convex shape structure, and it comprises cylinder and is integrally formed in the flange-like bulge loop of cylinder rear end, and is axially provided with axially extending bore, described front guide bracket comprises the cylindrical shell of front opening and is integrally formed the outer rim of barrel front end, described axle front end is fixedly installed guide wheel back-end support and inserts matchingly in described front guide bracket inner chamber and at its afterbody and be provided with sealing mechanism to form piston structure, the aft end face of described axle and the cavity between front guide bracket inner chamber base plate are shoe cream room, simultaneously, the front end of described front guide bracket be fixedly installed catch and oil sealing with the axle described in positioning and guiding and between axle and baffle ring, arrange oil sealing with anti-skidding process in front end dust enter oil pocket, wherein, on the rear end base plate of described front guide bracket, be formed with through hole, the flange of pull bar front end of the present invention is limited in the inner chamber of front guide bracket and can in shoe cream room, carries grease by the oilhole of pull bar afterbody, between the body of rod of pull bar and through hole, keep sealing to reveal to prevent grease, the rear end of described pull bar is passed the axially extending bore of rear guide bracket and is provided with stop gear at described tail end, definition before and after wherein in the present invention refers to that guide wheel end is front, but the definition of front and back is just called to distinguish and can't be construed as limiting protection scope of the present invention name of parts.
Wherein, the flange of described pull bar front end is polygonized structure, as regular hexagon, in the rear end of the inner chamber of described front guide bracket, be formed with the polygon position-limited trough mating with described flange accordingly, polygon flange embeds matchingly in polygon position-limited trough and can effectively avoid both to relatively rotate, it is simple that the anti-rotation structure coordinating with pull bar with traditional pin is compared technique, reduced tooling cost.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. a pull bar, it is characterized in that, comprise the body of rod, be integrally formed in lever front end flange, and be arranged on the stop gear of described body of rod afterbody, described stop gear comprises the ring groove that forms body of rod afterbody, be embedded in matchingly the divided ring in described ring groove, and gland, described gland front end is formed with and described divided ring can be held to cavity wherein, and described gland rear end is located by the relative body of rod of snap ring.
2. pull bar as claimed in claim 1, is characterized in that, the flange of described lever front end is polygonized structure, is formed with the polygon position-limited trough mating with described flange accordingly at the rear portion of the inner chamber of pull bar link.
3. pull bar as claimed in claim 2, is characterized in that, described body of rod center is formed with the oiling passage of axial perforation and is provided with oil hole to fuel feeding valve is installed at described body of rod afterbody.
4. a swelling device with pull bar claimed in claim 3, is characterized in that, comprises front guide bracket, rear guide bracket and oil cylinder, and described pull bar front end is communicated with the shoe cream room of oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243271.XA CN104015823B (en) | 2014-05-30 | 2014-05-30 | Pull bar and the swelling device with the pull bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243271.XA CN104015823B (en) | 2014-05-30 | 2014-05-30 | Pull bar and the swelling device with the pull bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104015823A true CN104015823A (en) | 2014-09-03 |
| CN104015823B CN104015823B (en) | 2017-07-18 |
Family
ID=51432911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410243271.XA Active CN104015823B (en) | 2014-05-30 | 2014-05-30 | Pull bar and the swelling device with the pull bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104015823B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202225935U (en) * | 2011-08-02 | 2012-05-23 | 山推工程机械股份有限公司 | Crawler tensioning device |
| CN202608923U (en) * | 2012-06-26 | 2012-12-19 | 济宁市吉华工程机械有限公司 | Tensioning device of chassis walking mechanism of rotary drilling rig |
| CN202608924U (en) * | 2012-06-26 | 2012-12-19 | 济宁市吉华工程机械有限公司 | Tensioning and buffering device of paver walking mechanism |
| US20130099433A1 (en) * | 2011-10-19 | 2013-04-25 | Timothy D. Wodrich | Recoil spring assembly |
| CN203078630U (en) * | 2012-12-31 | 2013-07-24 | 泉州市泉永机械发展有限公司 | Excavator track tensioning cylinder |
| CN103381859A (en) * | 2013-07-09 | 2013-11-06 | 北京理工大学 | Automatic takeup suitable for tracked robot |
| CN203996526U (en) * | 2014-05-30 | 2014-12-10 | 天津柳工机械有限公司 | Pull bar and there is the swelling device of this pull bar |
-
2014
- 2014-05-30 CN CN201410243271.XA patent/CN104015823B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202225935U (en) * | 2011-08-02 | 2012-05-23 | 山推工程机械股份有限公司 | Crawler tensioning device |
| US20130099433A1 (en) * | 2011-10-19 | 2013-04-25 | Timothy D. Wodrich | Recoil spring assembly |
| CN202608923U (en) * | 2012-06-26 | 2012-12-19 | 济宁市吉华工程机械有限公司 | Tensioning device of chassis walking mechanism of rotary drilling rig |
| CN202608924U (en) * | 2012-06-26 | 2012-12-19 | 济宁市吉华工程机械有限公司 | Tensioning and buffering device of paver walking mechanism |
| CN203078630U (en) * | 2012-12-31 | 2013-07-24 | 泉州市泉永机械发展有限公司 | Excavator track tensioning cylinder |
| CN103381859A (en) * | 2013-07-09 | 2013-11-06 | 北京理工大学 | Automatic takeup suitable for tracked robot |
| CN203996526U (en) * | 2014-05-30 | 2014-12-10 | 天津柳工机械有限公司 | Pull bar and there is the swelling device of this pull bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104015823B (en) | 2017-07-18 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150911 Address after: 213000 Jiangsu city of Changzhou province Yancheng Wujin high tech Industrial Development Zone, Road No. 588 Applicant after: LIUGONG CHANGZHOU MACHINERY CO., LTD. Applicant after: Guangxi Liugong Machinery Co., Ltd. Address before: 300300 No. three, No. 203, Tianjin Airport Economic Zone, Binhai New Area, Tianjin Applicant before: Tianjin Liugong Machinery Co., Ltd. Applicant before: Guangxi Liugong Machinery Co., Ltd. |
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