CN103754281A - Contact area and tightness adjustable crawler wheel - Google Patents

Contact area and tightness adjustable crawler wheel Download PDF

Info

Publication number
CN103754281A
CN103754281A CN201410036604.1A CN201410036604A CN103754281A CN 103754281 A CN103754281 A CN 103754281A CN 201410036604 A CN201410036604 A CN 201410036604A CN 103754281 A CN103754281 A CN 103754281A
Authority
CN
China
Prior art keywords
bearing
contact area
flexibly connected
group
wheel
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.)
Granted
Application number
CN201410036604.1A
Other languages
Chinese (zh)
Other versions
CN103754281B (en
Inventor
陈宇
宋慧新
邵春鸣
曹宇
赵宁
马明
肖洁
王超
王成玲
侯友山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China North Vehicle Research Institute
Original Assignee
China North Vehicle Research Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China North Vehicle Research Institute filed Critical China North Vehicle Research Institute
Priority to CN201410036604.1A priority Critical patent/CN103754281B/en
Publication of CN103754281A publication Critical patent/CN103754281A/en
Application granted granted Critical
Publication of CN103754281B publication Critical patent/CN103754281B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Vehicle Body Suspensions (AREA)

Abstract

The invention belongs to the technical field of vehicles and provides a contact area and tightness adjustable crawler wheel in order to achieve the functions of the contact area adjustment and the tightness adjustment of a rubber crawler and enable the vehicles to have high maneuverability and trafficability performance simultaneously. Through the contact area and tightness adjustable crawler wheel, the adjustment of different contact areas on the three road conditions such as highways, cross-country and extreme conditions can be achieved by controlling oil charge and oil discharge of a double-acting hydraulic cylinder in a contact area adjusting mechanism on the premise of ensuring original steering, braking, transmitting and other functions; through the control over a tension cylinder in a crawler tensioning mechanism, the tensioning and loosening of the rubber crawler can be achieved so that it can be guaranteed that the crawlers of the vehicles will not fall off in the running or steering process of the vehicles, and the road condition adaptive capacity of the vehicles are improved. The contact area and tightness adjustable crawler wheel has a certain military value and social and economic benefits.

Description

The Athey wheel that a kind of ground contact area and degree of tightness are adjustable
Technical field
The invention belongs to vehicle technology field, be specifically related to the adjustable Athey wheel of a kind of ground contact area and degree of tightness.
Background technology
Along with the variation of mission and the task of army, range of use and the region of military-designed vehicle are more and more extensive, Local Adaptation ability and maneuverability to vehicle are had higher requirement, this wheeled or continuously tracked vehicle for routine cannot meet, and particularly continuously tracked vehicle is not suitable for the main direction of the following new pattern of operation.Wheeled car, with the advantage of its maneuverability, is adapted to the above-mentioned pattern of operation, but wheeled car compares and have higher ground connection pressure than continuously tracked vehicle, when by the extreme road conditions such as marsh, snowfield, depression may occur, and weakens its mobile operations.Wheeled car running gear should continue to develop its high maneuverability, also should absorb the cross-country traveling advantage of continuously tracked vehicle, to adapt to environment complicated and changeable in modern operation simultaneously.Therefore, wheeled car is installed the adjustable shoe converting unit of taking turns of ground contact area, can adjust according to different road conditions the ground contact area of crawler belt, realizes its high maneuverability and has cross-country traveling feature concurrently.
At present, there is being installed on the Athey wheel of some specific vehicle in commercial market, improved the carrying capacity of vehicle.But what above-mentioned Athey wheel adopted is fixed sturcture, track area is unadjustable, therefore, when improving trafficability, has sacrificed greatly the manoevreability of vehicle, in the application of a lot of occasions, is all restricted.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is to provide a kind of ground contact area and the adjustable Athey wheel of degree of tightness, realizes its ground contact area and the adjustable function of rubber belt track degree of tightness, and vehicle is possessed compared with the ability of high maneuverability and crossing ability simultaneously.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides the adjustable Athey wheel of a kind of ground contact area and degree of tightness, comprise imput shaft, driving wheel, rubber belt track, group of alloys frame, bearing wheed assembly and carrier wheel assembly, described imput shaft is fixedly connected with by binding bolt with driving wheel, imput shaft is flexibly connected by bearing with group of alloys frame, and driving wheel contacts with rubber belt track; Carrier wheel assembly one end is flexibly connected with the corresponding journal stirrup of group of alloys frame by bearing, and its other end contacts with rubber belt track; It is characterized in that: this is taken turns shoe converting unit and also comprises track tension device and ground contact area regulating mechanism, and described track tension device one end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame, and the other end contacts with rubber belt track; Ground contact area regulating mechanism upper end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame, and lower end bearing wheed assembly contacts with rubber belt track, is provided with guiding mechanism between ground contact area regulating mechanism and group of alloys frame simultaneously.
Wherein, described track tension device comprises support arm, tensioning hydro-cylinder, tension wheel, tension wheel installation bearing and tension wheel installation shaft, wherein said support arm one end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame, and the other end is flexibly connected by bearing with the middle part of tension wheel installation shaft; Tensioning hydro-cylinder rodless cavity one end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame, and its rod chamber one end is flexibly connected by bearing pin with support arm; 2 tension wheels are fixedly connected with by flat key with the two ends of tension wheel installation shaft.
Wherein, described ground contact area regulating mechanism comprises bearing wheed support arm, bearing wheed, double acting hydraulic cylinder, bearing wheed installation bearing and bearing wheed installation shaft; Wherein 2 bearing wheed support arm upper ends are flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame respectively, and its lower end is flexibly connected by bearing with 2 bearing wheed installation shaft respectively; The two ends of double acting hydraulic cylinder are flexibly connected by bearing with 2 bearing wheed support arms, and its middle part SDeflector face coordinates with the guide groove of group of alloys frame; 4 bearing wheeds are fixedly connected with by flat key with the two ends of 2 bearing wheed installation shaft.
(3) beneficial effect
Compared with prior art, the present invention possesses following beneficial effect:
1, the present invention is guaranteeing originally to turn to, outside the function such as braking and transmission, by controlling the oil charging-discharging of double acting hydraulic cylinder in ground contact area regulating mechanism, can realize the adjusting of different ground contact areas under highway, cross-country, three kinds of road conditions conditions of extreme condition; By the control to tensioning hydro-cylinder in track tension device, can realize the tensioning of rubber belt track and loosen, guarantee vehicle travel or steering procedure in can there is not crawler belt obscission, improved the road conditions adaptive capacity of vehicle; There are certain Military value and economic results in society.
Accompanying drawing explanation
Fig. 1 is the outside drawing of the adjustable Athey wheel of ground contact area provided by the invention and degree of tightness;
Fig. 2 is ground contact area provided by the invention and the adjustable Athey wheel of the degree of tightness structural representation when the medium ground contact area;
Fig. 3 is the structural representation of the adjustable Athey wheel of ground contact area provided by the invention and degree of tightness when maximum ground contact area;
Fig. 4 is the structural representation of the adjustable Athey wheel of ground contact area provided by the invention and degree of tightness when minimum ground contact area;
Fig. 5 is the structural representation of track tension device in the adjustable Athey wheel of ground contact area provided by the invention and degree of tightness;
Fig. 6 is the structural representation of ground contact area regulating mechanism in the adjustable Athey wheel of ground contact area provided by the invention and degree of tightness.
The specific embodiment
For making object of the present invention, content and advantage clearer, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
The present invention is based on the vehicle of existing wheel car, the structure design that employing can be exchanged with wheeled car tire, its mounting interface size can be mated completely with the wheel limit assembly of former car, guarantee originally to turn to, outside the function such as braking and transmission, also can realize the adjusting of different ground contact areas under highway, cross-country, three kinds of road conditions conditions of extreme condition, be provided with track tension device simultaneously, guarantee vehicle travel or steering procedure in can there is not crawler belt obscission, improved the road conditions adaptive capacity of vehicle.
As illustrated in fig. 1 and 2, the Athey wheel that ground contact area provided by the invention and degree of tightness are adjustable, comprise imput shaft 1, driving wheel 2, rubber belt track 3, group of alloys frame 5, bearing wheed assembly 7 and carrier wheel assembly 8, described imput shaft 1 is fixedly connected with by binding bolt with driving wheel 2, imput shaft 1 is flexibly connected by bearing with group of alloys frame 5, and driving wheel 2 contacts with rubber belt track 3; Carrier wheel assembly 8 one end are flexibly connected with the corresponding journal stirrup of group of alloys frame 5 by bearing, and its other end contacts with rubber belt track 3; This is taken turns shoe converting unit and also comprises track tension device 4 and ground contact area regulating mechanism 6, and described track tension device 4 one end are flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame 5, and the other end contacts with rubber belt track 3; Ground contact area regulating mechanism 6 upper ends are flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame 5, lower end bearing wheed assembly 7 contacts with rubber belt track 3, between ground contact area regulating mechanism 6 and group of alloys frame 5, be provided with guiding mechanism, to keep the stability of carrying out converting unit of taking turns provided by the invention simultaneously.
Driving wheel 2 is connected with vehicle wheel limit assembly, and Vehicular turn and braking function rely on former vehicle wheel side assembly to realize.Driving wheel 2 receives the power that transmission shaft transmits, and coordinates transmission of power to rubber belt track 3 by teeth groove, can realize normally travelling of vehicle.
As shown in Fig. 2,3 and 4, the Athey wheel that ground contact area provided by the invention and degree of tightness are adjustable, relies on the spacing and built-in travel switch in the inside of double acting hydraulic cylinder 16, can be to ground contact area adjustment, be divided into successively 3 kinds of operating modes of medium, minimum and maximum ground contact area.
As shown in Figure 5, described track tension device 4 comprises support arm 9, tensioning hydro-cylinder 10, tension wheel 11, tension wheel installation bearing 12 and tension wheel installation shaft 13, wherein said support arm 9 one end are flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame 5, and the other end is flexibly connected by bearing with the middle part of tension wheel installation shaft 13; Tensioning hydro-cylinder 10 rodless cavity one end are flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame 5, and its rod chamber one end is flexibly connected by bearing pin with support arm 9; 2 tension wheels 11 are fixedly connected with by flat key with the two ends of tension wheel installation shaft 13.
As shown in Figure 6, described ground contact area regulating mechanism 6 comprises bearing wheed support arm 14, bearing wheed 15, double acting hydraulic cylinder 16, bearing wheed installation bearing 17 and bearing wheed installation shaft 18; Wherein 2 bearing wheed support arm 14 upper ends are flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame 5 respectively, and its lower end is flexibly connected by bearing with 2 bearing wheed installation shaft 18 respectively; The two ends of double acting hydraulic cylinder 16 are flexibly connected by bearing with 2 bearing wheed support arms 14, its middle part SDeflector face coordinates with the guide groove of group of alloys frame 5, guarantee that double acting hydraulic cylinder 16 can only move up and down with respect to group of alloys frame 5, maintain the stability of bearing wheed assembly 7; 4 bearing wheeds 15 are fixedly connected with by flat key with the two ends of 2 bearing wheed installation shaft 18.
The present invention arranges ground contact area regulating mechanism 6, by the oil charging-discharging control to double acting hydraulic cylinder 16 in ground contact area regulating mechanism 6, can realize the adjusting of the ground contact area of wheel shoe converting unit.When giving double acting hydraulic cylinder 16 rodless cavities when oil-filled, two ends piston rod is overhanging, promotes 2 bearing wheed support arms 14 around the corresponding journal stirrup bearing pin abduction of group of alloys frame 5, and then 2 bearing wheed assembly 7 spacing increases, track area increase; Otherwise double acting hydraulic cylinder 16 two ends rod chambers are oil-filled when giving, two ends piston rod retraction drives 2 bearing wheed support arms 14 to receive in the corresponding journal stirrup bearing pin of group of alloys frame 5, and then 2 bearing wheed assembly 7 spacing reduce, and track area reduces.
The present invention arranges track tension device 4, by the control to tensioning hydro-cylinder 10 in track tension device 4, realizes the tensioning of rubber belt track and loosens.When tensioning hydro-cylinder 10 rodless cavities are when oil-filled, piston rod is overhanging, promotes support arm 9 around the corresponding journal stirrup bearing pin abduction of group of alloys frame 5, and then outwards promotion rubber belt track 3 of tension wheel 11, until reach preset pressure position, rubber belt track 3 tensionings; Otherwise when tensioning hydro-cylinder 10 rod chambers are when oil-filled, piston rod inside contracts, and drives support arm 9 to receive in the corresponding journal stirrup bearing pin of group of alloys frame 5, and then tension wheel 11 inwardly regains, until it is interior spacing to reach tensioning hydro-cylinder 10, rubber belt track 3 loosens.
The Athey wheel ground contact area that ground contact area provided by the invention and degree of tightness are adjustable regulates before action, make rubber belt track 3 loosening ups; Wheel is carried out converting unit ground contact area and is regulated after action, do rubber belt track 3 tensioning actions.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also carry out some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.

Claims (3)

1. a ground contact area and the adjustable Athey wheel of degree of tightness, comprise imput shaft (1), driving wheel (2), rubber belt track (3), group of alloys frame (5), bearing wheed assembly (7) and carrier wheel assembly (8), described imput shaft (1) is fixedly connected with by binding bolt with driving wheel (2), imput shaft (1) is flexibly connected by bearing with group of alloys frame (5), and driving wheel (2) contacts with rubber belt track (3); Carrier wheel assembly (8) one end is flexibly connected with the corresponding journal stirrup of group of alloys frame (5) by bearing, and its other end contacts with rubber belt track (3); It is characterized in that: this is taken turns shoe converting unit and also comprises track tension device (4) and ground contact area regulating mechanism (6), described track tension device (4) one end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame (5), and the other end contacts with rubber belt track (3); Ground contact area regulating mechanism (6) upper end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame (5), lower end bearing wheed assembly (7) contacts with rubber belt track (3), is provided with guiding mechanism between ground contact area regulating mechanism (6) and group of alloys frame (5) simultaneously.
2. the adjustable Athey wheel of ground contact area as claimed in claim 1 and degree of tightness, it is characterized in that: described track tension device (4) comprises support arm (9), tensioning hydro-cylinder (10), tension wheel (11), tension wheel installation bearing (12) and tension wheel installation shaft (13), wherein said support arm (9) one end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame (5), and the other end is flexibly connected by bearing with the middle part of tension wheel installation shaft (13); Tensioning hydro-cylinder (10) rodless cavity one end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame (5), and its rod chamber one end is flexibly connected by bearing pin with support arm (9); 2 tension wheels (11) are fixedly connected with by flat key with the two ends of tension wheel installation shaft (13).
3. the adjustable Athey wheel of ground contact area as claimed in claim 1 and degree of tightness, is characterized in that: described ground contact area regulating mechanism (6) comprises bearing wheed support arm (14), bearing wheed (15), double acting hydraulic cylinder (16), bearing wheed installation bearing (17) and bearing wheed installation shaft (18); Wherein 2 bearing wheed support arms (14) upper end is flexibly connected by bearing pin with the corresponding journal stirrup of group of alloys frame (5) respectively, and its lower end is flexibly connected by bearing with 2 bearing wheed installation shaft (18) respectively; The two ends of double acting hydraulic cylinder (16) are flexibly connected by bearing with 2 bearing wheed support arms (14), and its middle part SDeflector face coordinates with the guide groove of group of alloys frame (5); 4 bearing wheeds (15) are fixedly connected with by flat key with the two ends of 2 bearing wheed installation shaft (18).
CN201410036604.1A 2014-01-25 2014-01-25 A kind of contact area and the adjustable Athey wheel of degree of tightness Expired - Fee Related CN103754281B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410036604.1A CN103754281B (en) 2014-01-25 2014-01-25 A kind of contact area and the adjustable Athey wheel of degree of tightness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410036604.1A CN103754281B (en) 2014-01-25 2014-01-25 A kind of contact area and the adjustable Athey wheel of degree of tightness

Publications (2)

Publication Number Publication Date
CN103754281A true CN103754281A (en) 2014-04-30
CN103754281B CN103754281B (en) 2016-07-20

Family

ID=50521659

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410036604.1A Expired - Fee Related CN103754281B (en) 2014-01-25 2014-01-25 A kind of contact area and the adjustable Athey wheel of degree of tightness

Country Status (1)

Country Link
CN (1) CN103754281B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104590410A (en) * 2015-01-15 2015-05-06 同济大学 Track driving device based on driving of oil cylinder
CN105882774A (en) * 2016-05-05 2016-08-24 中国北方车辆研究所 Crawler wheel capable of realizing interconversion between wheel type state and crawler type state
CN107804385A (en) * 2017-10-30 2018-03-16 北京理工大学 A kind of track takeup
CN108104812A (en) * 2017-12-28 2018-06-01 山东里能鲁西矿业有限公司 A kind of mining hydraulic splits rock machine
CN110481662A (en) * 2019-09-24 2019-11-22 履地科技(天津)有限公司 A kind of adjustable rubber belt track wheel of ground pressure
CN111409866A (en) * 2020-04-03 2020-07-14 中国北方车辆研究所 Wheel-track combined type lunar vehicle with high trafficability
CN110481662B (en) * 2019-09-24 2024-06-04 履地科技(天津)有限公司 Rubber crawler wheel with adjustable grounding pressure

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3863790B2 (en) * 2002-02-15 2006-12-27 ヤンマー農機株式会社 Tractor
JP2007118902A (en) * 2005-10-31 2007-05-17 Iseki & Co Ltd Crawler traveling device of tractor
CN201220698Y (en) * 2008-06-17 2009-04-15 李立顺 Externally hung track apparatus for drive wheel of double-shaft transport vehicle
CN102398638A (en) * 2010-09-12 2012-04-04 湖南省农友机械集团有限公司 Crawler travelling device with adjustable chassis height
CN202378982U (en) * 2011-12-28 2012-08-15 山推工程机械股份有限公司 Variable grounding specific pressure walking device of bulldozer
CN202400181U (en) * 2012-01-04 2012-08-29 江苏柳工机械有限公司 Triangular track travelling system with suspension shock-absorbing device
CN202703731U (en) * 2012-07-12 2013-01-30 厦门厦工机械股份有限公司 Crawler travelling device with independent damping function
CN202847861U (en) * 2012-10-23 2013-04-03 抚顺起重机制造有限责任公司 Tensioning device of hydraulic band track device
CN203381699U (en) * 2013-07-10 2014-01-08 江苏省农垦农业发展股份有限公司 Tractor walking device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3863790B2 (en) * 2002-02-15 2006-12-27 ヤンマー農機株式会社 Tractor
JP2007118902A (en) * 2005-10-31 2007-05-17 Iseki & Co Ltd Crawler traveling device of tractor
CN201220698Y (en) * 2008-06-17 2009-04-15 李立顺 Externally hung track apparatus for drive wheel of double-shaft transport vehicle
CN102398638A (en) * 2010-09-12 2012-04-04 湖南省农友机械集团有限公司 Crawler travelling device with adjustable chassis height
CN202378982U (en) * 2011-12-28 2012-08-15 山推工程机械股份有限公司 Variable grounding specific pressure walking device of bulldozer
CN202400181U (en) * 2012-01-04 2012-08-29 江苏柳工机械有限公司 Triangular track travelling system with suspension shock-absorbing device
CN202703731U (en) * 2012-07-12 2013-01-30 厦门厦工机械股份有限公司 Crawler travelling device with independent damping function
CN202847861U (en) * 2012-10-23 2013-04-03 抚顺起重机制造有限责任公司 Tensioning device of hydraulic band track device
CN203381699U (en) * 2013-07-10 2014-01-08 江苏省农垦农业发展股份有限公司 Tractor walking device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104590410A (en) * 2015-01-15 2015-05-06 同济大学 Track driving device based on driving of oil cylinder
CN104590410B (en) * 2015-01-15 2016-08-31 同济大学 A kind of caterpillar drive based on hydraulic oil cylinder driving
CN105882774A (en) * 2016-05-05 2016-08-24 中国北方车辆研究所 Crawler wheel capable of realizing interconversion between wheel type state and crawler type state
CN105882774B (en) * 2016-05-05 2018-05-08 中国北方车辆研究所 It is a kind of that the wheeled Athey wheel mutually changed with crawler type state can be achieved
CN107804385A (en) * 2017-10-30 2018-03-16 北京理工大学 A kind of track takeup
CN108104812A (en) * 2017-12-28 2018-06-01 山东里能鲁西矿业有限公司 A kind of mining hydraulic splits rock machine
CN108104812B (en) * 2017-12-28 2019-11-05 山东里能鲁西矿业有限公司 A kind of mining hydraulic splits rock machine
CN110481662A (en) * 2019-09-24 2019-11-22 履地科技(天津)有限公司 A kind of adjustable rubber belt track wheel of ground pressure
CN110481662B (en) * 2019-09-24 2024-06-04 履地科技(天津)有限公司 Rubber crawler wheel with adjustable grounding pressure
CN111409866A (en) * 2020-04-03 2020-07-14 中国北方车辆研究所 Wheel-track combined type lunar vehicle with high trafficability
CN111409866B (en) * 2020-04-03 2021-08-03 中国北方车辆研究所 Wheel-track combined type lunar vehicle with high trafficability

Also Published As

Publication number Publication date
CN103754281B (en) 2016-07-20

Similar Documents

Publication Publication Date Title
CN103754281A (en) Contact area and tightness adjustable crawler wheel
CN206841556U (en) One kind wheel carries out switchable type walking mechanism
CN203740003U (en) Track and tire switching mechanism of tracked engineering vehicle
CN107415608B (en) APM train engineering truck
CN203528622U (en) Car with tires and caterpillar bands capable of being switched over
CN104691634A (en) Deformation device of crawler belt running system
CN107200074A (en) A kind of flat-bed trailer equipped with snow tire
CN207790702U (en) Engineering truck track travel device
CN203498728U (en) Wheeled multifunctional operation robot
CN107351930A (en) The displacement device and method of a kind of caterpillar chassis
CN202279172U (en) Articulated barrier-free crawler device
CN104163201B (en) ATV is bowed chassis
CN104760466A (en) Infinitely-telescopic axle assembly
CN204567823U (en) A kind of deformation device of crawler belt driving system
CN204567838U (en) Crawler belt spiral Dual Drive vehicle
CN206914478U (en) A kind of electric bicycle shoe
CN203345078U (en) Track vehicle wheel with adjustable obstacle crossing height
CN206766168U (en) A kind of crawler unit of convenient regulation crawler belt
CN105416426A (en) Tensioning device for excavator crawler belt
CN103448798A (en) Hydraulic-support articulated steering chassis device
CN208393508U (en) Changeable type pedrail mechanism and engineering machinery comprising the mechanism
CN208746111U (en) A kind of adaptive transport vehicle
CN108505554A (en) A kind of wheel shoe interchangeable bull-dozer
CN203246524U (en) Caterpillar band walking mechanism with adjustable inclination angle
CN104724203A (en) Crawler belt type spiral dual drive vehicle

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
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: 20160720

Termination date: 20210125