CN107298134B - Self-loading and unloading crawler carrier vehicle - Google Patents
Self-loading and unloading crawler carrier vehicle Download PDFInfo
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- CN107298134B CN107298134B CN201710609134.7A CN201710609134A CN107298134B CN 107298134 B CN107298134 B CN 107298134B CN 201710609134 A CN201710609134 A CN 201710609134A CN 107298134 B CN107298134 B CN 107298134B
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- crawler
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- loading
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Jib Cranes (AREA)
- Manipulator (AREA)
Abstract
The invention discloses a self-loading and unloading crawler carrier, which comprises a crawler beam, a frame, a rotary platform, a suspension arm, a power box, a pitching oil cylinder, a crawler beam bracket and a transport box, wherein the transport box is a split transport box, the left and right independent transport boxes are respectively arranged on the crawler beam, the crawler beam bracket is arranged on the crawler beam, and the two transport boxes are respectively arranged on the left and right crawler beam brackets; one end of the frame is connected with the power box, the other end of the frame is overlapped with the crawler beams, and the telescopic rail transfer of the crawler chassis is realized by changing the overlapping length of the frame and the crawler beams and changing the distance between the two crawler beams; the rotary platform is arranged on the power box, the suspension arm and the pitching oil cylinder are arranged on the rotary platform, the telescopic end of the pitching oil cylinder is hinged with the middle part of the suspension arm, pitching of the suspension arm is achieved, and the rotary platform drives the suspension arm to achieve a rotary function. The requirements of the whole machine for the stability of the whole machine for transportation and different transportation widths are met, the gravity center position of the whole machine can be adjusted through rail transformation in the hoisting process, and the stability of the whole machine is improved.
Description
Technical Field
The invention relates to a self-loading and unloading crawler carrier, in particular to a self-loading and unloading crawler carrier for special terrain hoisting and transportation.
Background
The caterpillar transport vehicle belongs to a large-piece transport device which is carried out by a caterpillar running gear under special topography. At present, the crawler pipe conveyor, the crawler carrier and other devices are mainly used. The crawler pipe conveyer is important auxiliary construction equipment in petroleum and natural gas pipeline construction, and is mainly used for long-distance transportation of steel pipes in large-caliber oil and gas pipeline construction. The crawler carrier has higher off-road performance, is suitable for severe road conditions such as ditches, steep slopes, steps and the like, and is widely applied to the fields such as agriculture, exploration, deep forests, fire protection, military and the like. According to the difference of the highest speed, the functions of the whole machine and the structure form of the crawler chassis are also greatly different.
At present, in the construction engineering of water conservancy and hydropower, petroleum pipelines and wind power, most of the construction engineering is carried out under complex terrains such as mountain areas, hills, deserts and gobi deserts. The common wheel type transport vehicle has poor adaptability and great transport risk. Most crawler-type engineering vehicles such as loaders, pipe cranes, pipe conveyors, crawler-type transportation vehicles and the like are adopted. The loader and the pipe crane can only transport small-diameter steel pipes due to the limitation of the space size of the main machine, can only transport 2 large-diameter equipment at most, and has low travelling speed and low transport efficiency. The pipe conveyer is used in the field of pipeline transportation, and at most, two large-diameter steel pipes can be transported, so that the function is single.
Disadvantages of the prior art: at present, a crawler pipe conveyor is mainly adopted in the petroleum pipeline laying field, and can only meet the requirement of conveying two steel pipes with diameters larger than 1m, but cannot meet the requirement of conveying 4 steel pipes with large pipe diameters. The crawler carrier mainly adopts a crawler chassis with a suspension, has small transportation weight and high running speed, and does not have a self-dismounting function. The crawler conveyor is mainly a high-speed crawler chassis, has low bearing capacity and is not suitable for mountain transportation of heavy equipment.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides the self-loading and unloading crawler carrier which has the functions of wireless control, telescopic rail transfer, self loading and unloading and the like, can not only meet the transportation of 4 large-diameter steel pipes, but also meet the transportation requirements of other cargoes by adopting a container type transportation platform, and has strong adaptability and high transportation efficiency.
The technical scheme is as follows: in order to solve the technical problems, the invention adopts the following technical scheme:
a self-loading and unloading crawler carrier vehicle, characterized in that: comprises a track beam, a frame, a rotary platform, a suspension arm, a power box, a pitching oil cylinder, a track beam bracket and a transportation box,
the conveying boxes are split conveying boxes, the left conveying box and the right conveying box are independent conveying boxes, the track beam brackets are arranged on the track beams, and the two conveying boxes are respectively arranged on the left track beam bracket and the right track beam bracket;
one end of the frame is connected with the power box, the other end of the frame is overlapped with the track beams, the track beams are pushed outwards by changing the overlapping length of the frame and the track beams, the distance between the two track beams is changed, and the telescopic rail transfer of the track chassis is carried out;
the rotary platform is arranged on the power box, the suspension arm and the pitching oil cylinder are arranged on the rotary platform, the telescopic end of the pitching oil cylinder is hinged with the middle part of the suspension arm, pitching of the suspension arm is carried out, and the rotary platform drives the suspension arm to realize the rotary function.
As a preferred scheme, the self-loading and unloading crawler carrier is characterized in that: the crawler belt conveyor is provided with a controller and a wireless signal receiver, the wireless signal receiver is connected with the controller, the wireless signal receiver is in signal communication with the wireless remote controller, signals transmitted by the wireless remote controller are received, and the controller controls the power box to perform corresponding actions; the wireless remote controller is used for controlling various actions of the whole vehicle, unmanned operation is achieved, and long-distance wireless monitoring and operation are achieved through a wireless remote sensing technology.
As a preferred scheme, the self-loading and unloading crawler carrier is characterized in that: the crawler tractor further comprises a traction saddle, wherein the traction saddle is connected to the power box and used for performing the function of the crawler tractor.
As a preferred scheme, the self-loading and unloading crawler carrier is characterized in that: the track beam bracket is fixedly welded on the track beam.
As a preferred scheme, the self-loading and unloading crawler carrier is characterized in that: the track beam bracket is an assembled bracket, the height of the bracket can be adjusted relative to the track beam in a front-back rotating way, the left-right inclination can be adjusted in a left-right rotating way, and accordingly the front-back gravity center position of the whole transportation box can be timely adjusted according to mountain longitudinal slopes and transverse slopes.
As a preferred scheme, the self-loading and unloading crawler carrier is characterized in that: the track beam bracket is of a lifting structure, so that the front-back height of the track beam bracket is changed, the angle between the transport case and the track beam is adjusted, the angle change is carried out according to different climbing slopes, and the gravity center position of the whole machine is changed.
As a preferred scheme, the self-loading and unloading crawler carrier is characterized in that: the pushing oil cylinder and the swinging oil cylinder are arranged between the transportation box and the crawler beam bracket to move the transportation box back and forth and left and right, and the gravity center position of the whole machine is changed by adjusting the back and forth and left and right positions of the transportation box, so that the requirements on longitudinal and transverse gradients of mountain bodies are met.
As a preferred scheme, the self-loading and unloading crawler carrier is characterized in that: the transport case is two transport platforms, and every transport case has the structure of bilayer placing goods.
The beneficial effects are that: the self-loading and unloading crawler carrier provided by the invention has the following advantages: (1) The transportation capability of the large-diameter steel pipe can be solved, the transportation requirement of 4 steel pipes with the diameter of 1.4 meters can be met at maximum, the transportation capability is strong, and the transportation efficiency is greatly improved. (2) The weight of the transport case is directly transferred to the supporting wheels and the track shoes through the track beam brackets, so that the problem that the four wheels are subjected to uneven force due to the fact that the weight is transferred to the track beams through the frames by the traditional track running gear is avoided, the four wheels are subjected to abnormal abrasion, and the service life is prolonged. (3) The telescopic chassis rail-changing device is adopted, so that the requirements of complete machine transportation and different transportation widths on the stability of the complete machine are met, the gravity center position of the complete machine can be adjusted through rail changing in the hoisting process, and the stability of the complete machine is improved. (4) The transportation box or the track beam bracket can move left and right and back and forth, so that the climbing performance of the whole machine is improved, and the transportation box or the track beam bracket meets the requirement on the stability of the whole machine in the transportation process of longitudinal slopes and transverse slopes. (5) The multi-purpose container has more expansion functions, is not only used for container transportation, but also can be added with tools such as traction saddle, bulldozer blade and the like, and realizes one machine for multiple purposes; the multifunctional conveyor can integrate functions of lifting, conveying, traction and the like, and has high equipment utilization rate. (6) The invention adopts unmanned control, can realize remote control operation, and improves the safety of constructors in dangerous areas.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a telescoping track change of the crawler chassis of the present invention;
FIG. 3 is a schematic diagram of the whole machine in a transportation state according to the present invention;
FIG. 4 is a schematic view of the climbing state of the present invention;
FIG. 5 is a schematic diagram of the invention for changing the left and right center of gravity positions of a transport case;
FIG. 6 is a schematic view of the forward and backward movement of the transport case according to the present invention;
in the figure: track beam 1, frame 5, revolving platform 2, headstock 3, every single move hydro-cylinder 4, track beam bracket 6, transport case 7, steel pipe 8, davit 9, first bracket bracing piece 10, swing hydro-cylinder 11, second bracket bracing piece 12, pushing cylinder 13.
Detailed Description
The invention will be further described with reference to specific examples.
As shown in fig. 1 to 4, the self-loading and unloading crawler carrier comprises a crawler beam 1, a frame 5, a rotary platform 2, a suspension arm 9, a power box 3, a pitching oil cylinder 4, a crawler beam bracket 6, a transport box 7 and a wireless remote controller, wherein the crawler beam bracket 6 is connected to the crawler beam 1, the two transport boxes 7 are respectively arranged on the left crawler beam bracket 6 and the right crawler beam bracket 6, one end of the frame 5 is connected with the power box 3, the other end of the frame 5 is overlapped with the crawler beam 1, the rotary platform 2 is arranged on the power box 3, the rotary platform 2 is provided with the suspension arm 9 and the pitching oil cylinder 4, the telescopic end of the pitching oil cylinder 4 is hinged with the middle part of the suspension arm 9, the pitching of the suspension arm is realized through the telescopic movement of the pitching oil cylinder 4, and the rotary platform 2 drives the suspension arm to realize the rotary function.
The suspension arm not only has the auxiliary self-loading and unloading function, but also can adjust the gravity center position of the whole machine by turning and pitching the suspension arm in the transportation process, thereby improving the stability of the whole machine. In the transportation process of the crawler carrier, the suspension arm can be rotated to the rear part, the crawler beam changes the track to narrow the gauge, and the suspension arm downwards changes the amplitude to control the height of the whole machine, so that the transportation regulation is met, and the transportation state of the whole machine is shown in figure 3.
1. A transport case platform; the transport case is in the form of a split transport case, and the left transport case and the right transport case are independent transport cases. The invention adopts the transportation box 7 to be arranged on the track beam bracket 6, and directly transfers the load of transported goods to the track beam 1, and compared with the existing track transport vehicle, the invention transfers the transport weight to the frame and then to the track beam through the frame, and has the following advantages: first, can lighten the weight of the frame, reduce the height of the cross section of the frame, reduce the height of the gravity center of the whole machine. Second, the transport case can change the left and right positions of the gravity center along with the telescopic track change of the track beam. Thirdly, the load of the transported goods is directly transferred to the crawler frame, so that the stress of the supporting wheels of the crawler beam is uniform, and the load is transferred to the crawler beam through the frame in comparison with a conventional crawler conveyor, so that the situation that the stress on the inner side of the crawler beam is large, the stress on the outer side of the crawler beam is small, the abrasion on the inner sides of the supporting wheels and the crawler plates is severe, and the service life and the walking smoothness of a four-wheel belt are influenced is avoided. The structural form of the transport case can be changed into a container, a pipe carrier, a self-detaching trailer or other tool fixtures according to actual transport requirements. Meeting the requirements of different transportation working conditions. The transportation capability of the large-diameter steel pipe can be solved, the transportation requirement of transporting 4 steel pipes 8 with the diameter of 1.4 meters can be met at maximum, the transportation capability is strong, and the transportation efficiency is greatly improved.
2. As shown in fig. 2, the crawler carrier can realize track Liang Shanbian track change or bilateral track change, one end of the frame 5 is connected with the power box 3, the other end of the frame 5 is overlapped with the crawler beam 1, the crawler beam is pushed outwards by the oil cylinder through changing the overlapping length of the frame 5 and the crawler beam 1, the distance between the two crawler beams is changed, the telescopic track change of the crawler chassis is realized, the different road surface transportation widths are adapted, the lateral stability of the whole machine can be increased, and the larger transverse slope is adapted. The track gauge can be reduced in the transportation process, the requirement of road transportation width is met, the track gauge of the crawler chassis can be increased through track change in the working process, the stability of the whole machine is improved, meanwhile, single-side track change can be carried out according to the direction of a mountain crossslope, the gravity center position of the whole machine is changed, and the rollover resistance stability is improved. The chassis rail-changing can be carried out on a single side or a double side. According to the gravity center distribution of the whole machine when goods are hoisted in the self-dismounting process, the change of the crawler Liang Guiju is regulated, and the stability requirement of the whole machine is met.
3. As shown in fig. 4, the track beam bracket 6 can move left and right and back through the oil cylinder, so that the gravity center position of the whole machine is changed, and the climbing and adaptation capability is improved; the invention can realize the front-back and left-right movement between the transport case and the crawler carrier, and changes the gravity center position of the whole machine by adjusting the front-back and left-right positions of the transport case, thereby adapting to the longitudinal and transverse gradient requirements of the mountain.
The front and rear brackets of the crawler belt can be changed into lifting structures, so that the front and rear heights of the brackets of the crawler belt beam are changed, the angles of the transport case and the crawler belt beam are adjusted, the angle change is carried out according to different climbing slopes, and the gravity center position of the whole machine is changed.
The invention can also fix the transport case and the track beam bracket, and can change the gravity center position of the whole machine by moving the track beam bracket and the track beam back and forth or moving left and right, thereby adapting to the requirements of longitudinal and transverse slopes of mountain bodies.
As shown in fig. 5, the first bracket support bar 10, the track beam bracket 9 and the second bracket support bar 12 form a parallelogram four-bar linkage mechanism, and the swing cylinder 11 provides swing power. The swing cylinder pushes the first bracket support bar 10 to swing by an angle alpha, and the track beam bracket moves by a distance L, so that the left and right gravity center positions of the transport case are changed. According to the specific structural form, the driving mode of the swing oil cylinder can be changed into other power devices such as a rotating motor and the like.
As shown in fig. 6, the forward and backward movement of the transport case can be realized by adding the pushing oil cylinder 13 between the transport case 7 and the track beam bracket 6, the pushing oil cylinder 13 forms a certain included angle with the horizontal, the vertical load of the transport case can be born, and the friction resistance between the transport case and the track beam bracket in the forward and backward movement process is reduced. The back and forth movement can also adopt a gear rack structure form according to a specific structure.
The track beam bracket can be fixedly welded on the track beam, can also be assembled, is convenient to assemble and disassemble, and can reduce the transportation width of the host after being disassembled, thereby meeting the road transportation regulations. The track beam bracket has various forms, and the assembled bracket can adjust the height of the bracket relative to the track beam in a front-back rotating way, and adjust the left-right inclination in a left-right rotating way, so that the front-back gravity center position of the whole machine transportation box can be timely adjusted according to mountain longitudinal slopes and transverse slopes.
4. The crawler belt transport vehicle is provided with a controller and a wireless signal receiver, the wireless signal receiver is in signal communication with a wireless remote controller and receives signals transmitted by the wireless remote controller, the wireless signal receiver is connected with the controller, and the controller controls the power box 3 to perform corresponding actions; the whole car walking, lifting, turning, lifting, luffing, pushing and the like are realized by means of the wireless remote controller, the whole car walking, turning, lifting, luffing, turning, rail changing and braking are operated by the wireless remote controller, unmanned driving is realized, and long-distance wireless monitoring and operation are realized by means of a wireless remote sensing technology.
5. The invention adopts a modularized integration technology, has various functions, can be in the form of a single-section forehead arm, and meets the requirement of self-dismounting lifting capacity and working amplitude of a pipe. Meanwhile, the boom type can be changed into a telescopic arm and a folding arm according to different construction objects. The suspension arm 9 and the rotary platform 2 can be disassembled, the traction saddle is replaced on the power box, and the traction saddle can be added behind the main machine, so that the function of the crawler tractor is realized.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (7)
1. A self-loading and unloading crawler carrier vehicle, characterized in that: comprises a track beam, a frame, a rotary platform, a suspension arm, a power box, a pitching oil cylinder, a track beam bracket and a transportation box,
the conveying boxes are split conveying boxes, the left conveying box and the right conveying box are independent conveying boxes, the track beam brackets are arranged on the track beams, and the two conveying boxes are respectively arranged on the left track beam bracket and the right track beam bracket;
one end of the frame is connected with the power box, the other end of the frame is overlapped with the track beams, the track beams are pushed outwards by changing the overlapping length of the frame and the track beams, the distance between the two track beams is changed, and the telescopic rail transfer of the track chassis is carried out;
the rotary platform is arranged on the power box, the suspension arm and the pitching oil cylinder are arranged on the rotary platform, the telescopic end of the pitching oil cylinder is hinged with the middle part of the suspension arm, pitching of the suspension arm is carried out, and the rotary platform drives the suspension arm to realize a rotary function;
the pushing oil cylinder and the swinging oil cylinder are arranged between the transportation box and the crawler beam bracket to move the transportation box back and forth and left and right, and the gravity center position of the whole machine is changed by adjusting the back and forth and left and right positions of the transportation box, so that the requirements on longitudinal and transverse gradients of mountain bodies are met.
2. The self-loading and unloading crawler as in claim 1 wherein: the crawler belt conveyor is provided with a controller and a wireless signal receiver, the wireless signal receiver is connected with the controller, the wireless signal receiver is in signal communication with the wireless remote controller, signals transmitted by the wireless remote controller are received, and the controller controls the power box to perform corresponding actions; the wireless remote controller is used for controlling various actions of the whole vehicle, unmanned operation is achieved, and long-distance wireless monitoring and operation are achieved through a wireless remote sensing technology.
3. The self-loading and unloading crawler as in claim 1 wherein: the crawler tractor further comprises a traction saddle, wherein the traction saddle is connected to the power box and used for performing the function of the crawler tractor.
4. The self-loading and unloading crawler as in claim 1 wherein: the track beam bracket is fixedly welded on the track beam.
5. The self-loading and unloading crawler as in claim 1 wherein: the track beam bracket is an assembled bracket, the height of the bracket can be adjusted relative to the track beam in a front-back rotating way, the left-right inclination can be adjusted in a left-right rotating way, and accordingly the front-back gravity center position of the whole transportation box can be timely adjusted according to mountain longitudinal slopes and transverse slopes.
6. The self-loading and unloading crawler as in claim 1 wherein: the track beam bracket is of a lifting structure, so that the front-back height of the track beam bracket is changed, the angle between the transport case and the track beam is adjusted, the angle change is carried out according to different climbing slopes, and the gravity center position of the whole machine is changed.
7. The self-loading and unloading crawler as in claim 1 wherein: the transport case is two transport platforms, and every transport case has the structure of bilayer placing goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609134.7A CN107298134B (en) | 2017-07-25 | 2017-07-25 | Self-loading and unloading crawler carrier vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609134.7A CN107298134B (en) | 2017-07-25 | 2017-07-25 | Self-loading and unloading crawler carrier vehicle |
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| CN107298134A CN107298134A (en) | 2017-10-27 |
| CN107298134B true CN107298134B (en) | 2023-05-23 |
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| CN201710609134.7A Active CN107298134B (en) | 2017-07-25 | 2017-07-25 | Self-loading and unloading crawler carrier vehicle |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019178781A1 (en) * | 2018-03-21 | 2019-09-26 | 洛阳德平科技股份有限公司 | All-terrain crawler-type pipe transportation vehicle and construction method thereof |
| CN108791318A (en) * | 2018-04-11 | 2018-11-13 | 北京好运达智创科技有限公司 | A kind of mobile shipping cable car suitable for complicated landform |
| CN108454495B (en) * | 2018-04-18 | 2024-01-12 | 徐工集团工程机械股份有限公司 | High-efficient adjustable level track support |
| CN110053540A (en) * | 2019-04-10 | 2019-07-26 | 航天重型工程装备有限公司 | A kind of slidably lifting system |
| CN111409716B (en) * | 2020-04-30 | 2024-05-10 | 洛阳德平科技股份有限公司 | Crawler-type pipeline opposite-port engineering vehicle |
| CN112046629A (en) * | 2020-08-31 | 2020-12-08 | 国家林业和草原局北京林业机械研究所 | Power platform for afforestation and tending of hilly and mountainous regions and afforestation and tending method thereof |
| CN113443548B (en) * | 2021-08-31 | 2021-11-09 | 山东柏源技术有限公司 | Petroleum pipeline laying pipe fitting hoisting and conveying integrated equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1229356A (en) * | 1986-06-17 | 1987-11-17 | Nelson Macdonald | Expandable trailer |
| JPH09202238A (en) * | 1996-01-25 | 1997-08-05 | Masashige Ariyama | Carrying truck |
| JP2001310775A (en) * | 2000-04-27 | 2001-11-06 | C Tekku:Kk | Transporter with load-carrying platform |
| CA2464908A1 (en) * | 2003-04-14 | 2004-10-14 | Macmoter S.P.A. | Crawler-tracked vehicle with variable track width |
| CN101367207A (en) * | 2008-09-26 | 2009-02-18 | 郭长青 | Miniature self-service ground robot |
| CN102774438A (en) * | 2012-08-09 | 2012-11-14 | 徐工集团工程机械股份有限公司 | Crawler-type chassis structure and engineering mechanical device |
| CN104229640B (en) * | 2013-06-20 | 2016-08-10 | 北汽福田汽车股份有限公司 | A kind of crawler belt rail changing device and crane |
| DE202014005055U1 (en) * | 2014-06-24 | 2015-09-30 | Scheuerle Fahrzeugfabrik Gmbh | Transport vehicle, in particular self-propelled transport vehicle, with variable width |
| CN204037410U (en) * | 2014-09-05 | 2014-12-24 | 陈良 | Rubber caterpillar type automatic loading/unloading conveying car |
| CN207045484U (en) * | 2017-07-25 | 2018-02-27 | 徐工集团工程机械股份有限公司 | A kind of Self-loading-unloading tracked carrier |
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