CN202022257U - Track rigidity tensioning mechanism - Google Patents
Track rigidity tensioning mechanism Download PDFInfo
- Publication number
- CN202022257U CN202022257U CN2011201255194U CN201120125519U CN202022257U CN 202022257 U CN202022257 U CN 202022257U CN 2011201255194 U CN2011201255194 U CN 2011201255194U CN 201120125519 U CN201120125519 U CN 201120125519U CN 202022257 U CN202022257 U CN 202022257U
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- CN
- China
- Prior art keywords
- track
- longeron
- blocking plate
- oil cylinder
- tensioning device
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Abstract
The utility model relates to an engineering machinery chassis with a track structure, and provides a track rigidity tensioning mechanism which maintains the normal operation of the engineering machinery chassis. The track rigidity tensioning mechanism comprises a track assembly, a leading wheel, a tensioning device, a longitudinal girder and the like. Sliding rails of the two sides of the leading wheel and lugs of the two sides of a tensioning device support connected with the sliding rails are installed in a groove of a mud-blocking plate of the end portion of the longitudinal girder, and rectangular holes for installing adjusting cushions are reserved on vertical plates of the two sides of the mud-blocking plate. A blocking plate is arranged in the groove. When oil is added into a tensioning device oil cylinder, the length of the tensioning device is increased continuously, and accordingly a certain gap is formed between the lugs of the two sides of the tensioning device support and the blocking plate arranged in the groove of mud-blocking plate of the longitudinal girder. By continuously installing corresponding adjusting cushions, the tension of a track is changed. When the tension conforms to the requirement, an oil-filling valve is rotated out properly, the fact that the oil in oil cylinder leaks out freely can be guaranteed, and accordingly the oil cylinder can avoid bearing any extra loading. The impact force received by the leading wheel during the chassis running process is delivered to the longitudinal girder through the adjusting cushions.
Description
Technical field
The utility model relates to crawler belt rotary drilling rig chassis, realizes the structure that track tensioning force changes by the stroke that changes oil cylinder in the tightening device, is particularly useful for the crawler body of big-and-middle-sized construction machinery and equipment.
Background technology
At present, in order to ensure the ride comfort of motion during the rotary drilling rig walking, prevent that the crawler belt overrelaxation from causing drive wheel to jump tooth, great majority contain in the longeron of caterpillar belt structure rotary drilling rig, are equipped with the track tensioning force adjustable structure.During the walking of chassis, in case the crawler belt overrelaxation occurs or take place drive wheel to jump tooth and phenomenon that can't cruising, must in time in the oil cylinder of tightening device, replenish grease,, guarantee that track tensioning force maintains in the reasonable range by improving the predetermincd tension of compression spring.
Described track tensioning force adjustable structure mainly is made up of tensioning hydro-cylinder, compression spring.In use, at first in tensioning hydro-cylinder, inject grease, this spring is produced certain amount of compression (predetermincd tension).In driving process, when impulsive force that crawler belt produced passed to spring in this structure through guide wheel, this spring produced corresponding distortion thereupon and absorbs its energy, simultaneously impulsive force is reduced to bottom line, thereby guarantees this chassis stable working.Along with construction machinery and equipment complete machine matter (weight) amount constantly increases, the impulsive force that its chassis is produced in motion process also can significantly increase thereupon, at this moment, traditional compression spring can't satisfy the requirement of actual job operating mode, and a new difficult problem has appearred in the structure design of tightening device thereupon.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, reliable and practical, can be widely used in time adjusting track tensioning force in the chassis of various heavy engineering machinery caterpillar belt structures, keeps the crawler belt rigidity stretching device of crawler belt normal working.
The purpose of this utility model is achieved in that this mechanism is made up of parts such as track rail assembly, guide wheel, tightening device, caterpillar wheel, track carrying wheel, adjusting pad, longerons.Its guide wheel, tightening device are installed in the inside of longeron casing, and caterpillar wheel, track carrying wheel are installed in respectively on the fixed pan up and down of longeron, and track rail assembly holds this longeron along its length and arranges.
Adjusting pad in the described mechanism, by the shape unanimity but some different steel plates of thickness form, can be in the use according to the needs of actual tensile force, increase and decrease its quantity and change different thicknesss of slab, to realize the adjustment of the best tensile force of crawler belt, this steel plate all leaves special ledge structure, matches with the groove of longeron, can play in the use to prevent the effect that comes off.Tightening device is made up of parts such as oil cylinder and bearing, nuts, and oil cylinder is assembled into one by cylinder body, piston rod, fuel feeding valve, the front end of this bearing and the slide rail of guide wheel are by bolted connection together, its rear end is fixed on the cylinder body of oil cylinder by nut, the exposed junction of oil cylinder piston bar is installed in the circular hole of longeron riser.The journal stirrup of the slide rail of guide wheel both sides and bearing both sides, be installed in the groove of longeron end mudwing, on the riser of mudwing both sides, with the cooresponding position of this groove, leaving can be for the rectangular opening that adjusting pad is installed, bottom (innermost) near the mudwing grooves on two sides also is provided with baffle arrangement.
During installation, at first as required by bolted connection together the aft end face of the front end of bearing in the tightening device and guide wheel slide rail, assembled components is put in the longeron casing from an end of longeron mudwing, guarantee the exposed junction of oil cylinder piston bar, place the circular hole of longeron riser, and keep its fuel feeding valve to point to the outside of longeron; Caterpillar wheel, track carrying wheel then are installed; Again track rail assembly is flattened and places ground, with institute's stack-mounted longeron parts be positioned over track rail assembly above, finish the connection of crawler belt head and the tail bearing pin then.Continuous filling grease in the fuel feeding valve on being installed in the oil cylinder piston bar, increase along with tightening device length, will form certain clearance between the baffle plate in this bearing both sides journal stirrup and longeron mudwing groove, need in time to place the steel plate (adjusting pad) of respective numbers this moment, and guarantee that thickness, the quantity of guide wheel both sides installation steel plate are identical.When track tensioning force met the requirements, the fuel feeding valve in suitably screwing out on the piston rod can freely release this in-oil cylinder part grease in the driving process of chassis, guaranteed that oil cylinder avoids any outer carrying.
Advantage of the present utility model solves in the big-and-middle-sized engineering machinery chassis structure, and the requirement of crawler belt super large tensile force also can in time be adjusted; During travelling in the chassis, avoid oil cylinder in this stretching device because of bearing excessive axial load, a difficult problem that causes part to damage, this stretching device is simple in structure, dependable performance, easy to maintenance.
Be described further below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is an example structure figure of the present utility model.
Fig. 2 is to view among Fig. 1.
The specific embodiment
Guide wheel (2) two a wood side-guides end with threaded hole, contact as required, use bolt (3) to connect together with the front end face of tightening device (5) bearing; Put into its casing just assembling the all-in-one-piece parts from an end of longeron (6) mudwing, with the exposed junction of oil cylinder piston bar in the tightening device (5), be installed in the circular hole of longeron riser, and keep its fuel feeding valve directed outside simultaneously; Caterpillar wheel (7) and track carrying wheel (8) are installed on longeron immediately; Track rail assembly (1) flattening is placed ground; Longeron (6) and institute's stack-mounted parts thereof are placed on the track rail assembly (1) together, finish the connection of this track rail assembly head and the tail bearing pin.The grease of then in the oil cylinder of tightening device, annotating, continuous increase along with tightening device (5) total length, between the journal stirrup and the baffle plate in longeron (6) the mudwing groove of end bearing both sides, certain clearance will occur before this device, adjusting pad (4) in time is installed according to the size in gap.When track tensioning force met the requirements, the continuation that can stop this adjusting pad was added, and suitably unscrews the fuel feeding valve on the oil cylinder immediately, guarantees that the grease in the tightening device oil cylinder can freely release.
Claims (3)
1. one kind is widely used in the chassis that all kinds of large-scale engineering machineries contain caterpillar belt structure, satisfy the crawler belt rigidity stretching device of crawler belt super large tensile force requirement, it is characterized in that: this mechanism comprises track rail assembly, guide wheel, longeron, caterpillar wheel, track carrying wheel, tightening device, bolt, adjusting pad, its guide wheel, tightening device are installed in the inside of longeron casing, caterpillar wheel, track carrying wheel are installed in respectively on the fixed pan up and down of longeron, and track rail assembly holds this longeron along its length and arranges.
2. crawler belt rigidity stretching device according to claim 1 is characterized in that containing in the tightening device oil cylinder and fuel feeding valve.
3. crawler belt rigidity stretching device according to claim 1 is characterized in that adjusting pad by the shape unanimity, and some different steel plates of thickness are formed, and all steel plates all leave ledge structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201255194U CN202022257U (en) | 2011-04-17 | 2011-04-17 | Track rigidity tensioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201255194U CN202022257U (en) | 2011-04-17 | 2011-04-17 | Track rigidity tensioning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202022257U true CN202022257U (en) | 2011-11-02 |
Family
ID=44847218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201255194U Expired - Lifetime CN202022257U (en) | 2011-04-17 | 2011-04-17 | Track rigidity tensioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202022257U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505629A (en) * | 2011-11-17 | 2012-06-20 | 成都市新筑路桥机械股份有限公司 | Caterpillar track walking mechanism for steel box girder hanging type bridge checking vehicle |
| CN102745272A (en) * | 2011-04-17 | 2012-10-24 | 徐州徐工基础工程机械有限公司 | Engineering mechanical chassis caterpillar track tension device |
| CN102765430A (en) * | 2011-05-05 | 2012-11-07 | 徐州徐工基础工程机械有限公司 | Combined tensioning mechanism for caterpillar band |
| CN103171637A (en) * | 2011-12-24 | 2013-06-26 | 广西玉柴重工有限公司 | Crawler belt frame structure of crawler-type skip loader |
-
2011
- 2011-04-17 CN CN2011201255194U patent/CN202022257U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745272A (en) * | 2011-04-17 | 2012-10-24 | 徐州徐工基础工程机械有限公司 | Engineering mechanical chassis caterpillar track tension device |
| CN102765430A (en) * | 2011-05-05 | 2012-11-07 | 徐州徐工基础工程机械有限公司 | Combined tensioning mechanism for caterpillar band |
| CN102505629A (en) * | 2011-11-17 | 2012-06-20 | 成都市新筑路桥机械股份有限公司 | Caterpillar track walking mechanism for steel box girder hanging type bridge checking vehicle |
| CN103171637A (en) * | 2011-12-24 | 2013-06-26 | 广西玉柴重工有限公司 | Crawler belt frame structure of crawler-type skip loader |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Zhaocheng Document name: Notice of termination of patent right |