WO2013053173A1 - 可伸缩式履带底盘及具有该底盘的工程机械 - Google Patents

可伸缩式履带底盘及具有该底盘的工程机械 Download PDF

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Publication number
WO2013053173A1
WO2013053173A1 PCT/CN2011/083264 CN2011083264W WO2013053173A1 WO 2013053173 A1 WO2013053173 A1 WO 2013053173A1 CN 2011083264 W CN2011083264 W CN 2011083264W WO 2013053173 A1 WO2013053173 A1 WO 2013053173A1
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WO
WIPO (PCT)
Prior art keywords
crawler
hollow
sliding
sliding beam
inner cavity
Prior art date
Application number
PCT/CN2011/083264
Other languages
English (en)
French (fr)
Inventor
钱奂云
何清华
朱建新
Original Assignee
山河智能装备股份有限公司
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 山河智能装备股份有限公司 filed Critical 山河智能装备股份有限公司
Priority to JP2014534912A priority Critical patent/JP5903493B2/ja
Priority to US13/824,546 priority patent/US20140224555A1/en
Priority to KR1020147012628A priority patent/KR101618696B1/ko
Publication of WO2013053173A1 publication Critical patent/WO2013053173A1/zh

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Classifications

    • 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
    • B62D55/084—Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/10—Dead axles, i.e. not transmitting torque adjustable for varying track
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/10—Dead axles, i.e. not transmitting torque adjustable for varying track
    • B60B35/1036—Dead axles, i.e. not transmitting torque adjustable for varying track operated with power assistance
    • 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
    • B62D55/10—Bogies; Frames
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E02D7/16—Scaffolds or supports for drivers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/06—Dredgers; Soil-shifting machines mechanically-driven with digging screws
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • E02F9/024—Travelling-gear, e.g. associated with slewing gears with laterally or vertically adjustable wheels or tracks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D49/00—Tractors
    • B62D49/06—Tractors adapted for multi-purpose use
    • B62D49/0678—Tractors of variable track width or wheel base

Definitions

  • the present invention relates to crawler chassis technology for construction machinery, and more particularly to a retractable crawler chassis, and to a crawler type construction machine having the same. BACKGROUND OF THE INVENTION
  • a construction machinery chassis since the crawler type of walking has both adaptability and flexibility, the crawler chassis has a wide range of applications in construction machinery, such as pile drivers, drills, cranes, and the like. With the development of engineering technology, engineering operations have put forward higher requirements for crawler-type construction machinery.
  • the current crawler construction machinery has a retractable structure, that is, a retractable crawler chassis has emerged.
  • the crawler chassis has two states: operation status and transition In the state, during the construction work, the crawler chassis is in operation, and the crawler frames on both sides extend to both sides, so that the width of the crawler chassis is increased to improve the stability of the construction machinery; when the transport is transferred, the chassis is in transition. In the state, the crawler frames on both sides are retracted, which reduces the width of the crawler chassis and makes the transfer transportation more convenient.
  • Crawler Chassis Generally, the crawler chassis of a crawler crane is borrowed.
  • the disadvantages are: In order to achieve the contraction and widening of the tracks on both sides, there is a large gap between the track bracket and the overhanging beam of the chassis; After widening to the maximum size, the amount of overlap between the overhanging beam and the crawler bracket is small, and there are unstable factors in the structure, which may cause the column in the operation to shake and the like; and the track width is also limited: generally ⁇ 4300mm.
  • a hinge plate structure is adopted.
  • the structure can make the track width of the track reach about 4600mm, but still has the following disadvantages:
  • the hinge plate structure itself has the problem of instability, and there is still a problem that there is a large gap between the track bracket and the outrigger beam, and the pile frame walking and operation are still not Smooth; therefore, the important performance parameters of the height of the pile post, the weight of the work carried, and the maximum working torque can be compromised.
  • the chassis is provided with a base, a hollow outwardly extending beam, a hollow sliding beam, a sliding beam, and one end of the hollow sliding beam and the sliding beam are respectively fixed with the crawler walking device, The other end is movably inserted into the hollow outrigger.
  • the crawler can be moved by the hollow sliding beam and the sliding beam with respect to the outrigger of the chassis. When the crawler moves on both sides, the front end of the sliding beam can be inserted.
  • the hollow portion of the hollow sliding beam forms an overlapping state.
  • the sliding beam and the hollow sliding beam can be overlapped when the crawler traveling device is inwardly contracted, the size of the track is widened when the two crawler belts are extended, which increases the overall stability of the pile frame, but still has the following disadvantages:
  • the width of the track on both sides should be ⁇ 3300mm. Therefore, when the track on both sides is widened to the maximum size ( ⁇ 6000mm), the sliding beam and the hollow sliding beam are completely disengaged, and the sliding beam and the extension are extended. There is a limit to the actual amount of overlap between the beams, and there are still unstable factors in the structure.
  • the chassis is further provided with a sliding beam and a fixing device
  • the outrigger is hollow structure
  • one end of the sliding beam is fixed with the crawler walking device
  • the other end is movably Inserted into the hollow outrigger beam
  • the crawler walking device can be moved relative to the outrigger beam by means of the sliding beam, and can be rigidly fixedly coupled with the outrigger beam of the chassis by means of the fixing device. Since the crawler walking device overlaps and moves relative to the hollow sliding seat of the chassis by the sliding beam, the width of the crawler walking device on both sides is wider than that of the prior art (4300 mm) while ensuring sufficient overlapping length between each other.
  • Patent CN101402377A discloses a retractable crawler chassis comprising left and right crawler frames, left and right telescopic cylinders and a center frame, and a left telescopic cylinder mounted between the center frame and the left track frame, right telescopic oil
  • the cylinder is installed between the center frame and the right crawler frame, the left crawler frame includes a left telescopic beam, the right crawler frame includes a right telescopic beam, the left telescopic beam cooperates with a left telescopic hole of the center frame, and the right telescopic beam and the right frame of the right telescopic
  • the hole is matched; the telescopic direction of the left telescopic cylinder is parallel to the center line of the left telescopic hole, and the telescopic direction of the right telescopic cylinder is parallel to the center line of the right telescopic hole.
  • the technical problem to be solved by the present invention is to provide a retractable crawler chassis based on the above-mentioned retractable crawler chassis, and the crawler chassis structure is more reasonable, so that the state change or conversion is more convenient.
  • the machine is more stable and safer to walk and work.
  • the present invention provides a retractable crawler chassis comprising: at least one fixed hollow slide, further comprising at least one hollow left sliding beam, at least one right sliding beam, one end of the hollow left sliding beam
  • the left crawler frame is fixedly coupled, and the other end is movably inserted into the inner cavity of the hollow sliding seat from a left end of the hollow sliding seat; one end of the right sliding beam is fixedly coupled with the right crawler frame, and One end is movably inserted into the inner cavity of the left sliding beam from the right end of the hollow slide.
  • the present invention provides a retractable crawler chassis comprising: a left crawler frame, a right crawler frame, a base, at least one left telescopic cylinder and at least one right telescopic cylinder, the left telescopic cylinder being mounted between the base and the left crawler frame,
  • the right telescopic cylinder is mounted between the base and the right crawler frame, the base is provided with at least one fixed hollow sliding seat, and further comprises at least one hollow left sliding beam, at least one right sliding beam, the hollow left One end of the sliding beam is fixedly coupled with the left crawler frame, and the other end is movably inserted into the inner cavity of the hollow sliding seat from the left end of the hollow sliding seat; one end of the right sliding beam is fixedly coupled with the right crawler frame, and the other end is hollow The right end of the carriage is movably inserted into the inner cavity of the hollow slide and the inner cavity of the left slide beam.
  • the front end of the right sliding beam is inserted into the inner cavity of the hollow left sliding beam. in.
  • the left sliding beam and the right sliding beam are overlapped and overlapped, which further ensures and improves the overall stability of the equipment supported by the retractable track chassis.
  • the retractable crawler chassis further includes a stepped intermediate transition beam
  • the right sliding beam is a hollow structure having an inner cavity
  • one end of the intermediate transition beam is large, the other end is small, and the small end of the intermediate transition beam is movably Inserted into the inner cavity of the right sliding beam
  • the big end of the intermediate transition beam is located outside the inner cavity of the right sliding beam
  • the big end of the intermediate transition beam and the right sliding beam can be inserted into the cavity of the hollow left sliding beam together
  • an intermediate transition beam slip limit mechanism is arranged on the hollow left sliding beam, the right sliding beam and/or the intermediate transition beam, The small end of the intermediate transition beam cannot be separated from the inner cavity of the right sliding beam when sliding, and the large end cannot be separated from the inner cavity of the hollow left sliding beam when sliding.
  • the slip limiting mechanism includes: an axially extending long groove is disposed on the right sliding beam, and the first convex embedded in the long groove is disposed at the front end of the hollow left sliding beam. Block, the sliding beam can move in the groove during sliding, and the maximum stroke is blocked by the big end of the intermediate transition beam; the intermediate transition beam is provided with an axially extending long waist groove, sliding on the right The front end of the inner cavity of the beam is provided with a second protrusion embedded in the long waist groove, and the second beam can move in the long waist groove during the sliding process.
  • the bumps are in contact with the large end of the intermediate transition beam and the right end of the long waist groove, and the intermediate transition beam protrudes from the sliding beam to make the crawler belts on both sides
  • the outer width is widened to the maximum design width, and the intermediate transition beams can be used to maintain more overlapping of the sliding beams on both sides, thereby further ensuring and improving the overall stability of the pile frame during walking and operation.
  • the hollow sliding seat, the hollow left sliding beam and the right sliding beam are provided with positioning pin holes, and the hollow left sliding beam and the right sliding beam are fixed to each other by the positioning pin passing through the positioning pin hole and the hollow sliding seat.
  • the hollow sliding seat comprises a front hollow sliding seat and a rear hollow sliding seat
  • the left sliding beam comprises a front left sliding beam and a rear left sliding beam
  • the right sliding beam comprises a front right sliding beam and a rear right sliding beam
  • the front hollow sliding seat cooperates with the front left sliding beam and the front right sliding beam
  • the rear hollow sliding seat cooperates with the rear left sliding beam and the rear right sliding beam.
  • the front hollow sliding seat is located at a front portion of the base; the rear hollow sliding seat is located at a rear portion of the base, and the front hollow sliding seat and the rear hollow sliding seat are parallel to each other.
  • the left telescopic cylinder is between the front left sliding beam and the rear left sliding beam
  • the right telescopic cylinder is between the front right sliding beam and the rear right sliding beam.
  • the hollow sliding seat penetrates the left end and the right end of the base.
  • the crawler type construction machine provided by the present invention comprises a crawler chassis, and the crawler chassis is a retractable crawler chassis according to any one of the foregoing aspects.
  • the crawler type construction machine provided by the present invention includes crawler pile driving machinery, crawler drilling machine, crawler pile driver, crawler type rake machine, crawler type excavator, crawler type milling machine, crawler type mixer, crawler type excavator, crawler belt Transporters, crawler trucks, crawler cranes, crawler mining machinery, etc.
  • the retractable crawler chassis of the present invention has the following positive effects and advantages: Since the left and right crawler frames overlap and move relative to each other by the sliding cross beam and the hollow slide of the chassis, a sufficient amount of overlap between the sliding beam and the hollow slide is ensured. At the same time, the expansion of the crawler belts on both sides is wider than the prior art (5000 ⁇ 6000mm) (up to 6000 ⁇ 7000mm), and the stability of the construction machinery during walking and operation is improved; in the preferred scheme, on both sides When the crawler walking device is widened to the maximum size, the intermediate transition beams prevent more overlap between the sliding beams, which further ensures and improves the stability of the construction machinery during walking and operation. Since the left and right crawler frames can be moved and contracted relative to the base, and can be rigidly coupled with the sliding beam, the stability of the construction machinery and the operation can be ensured from the structural form. The beneficial effects of improved stability are:
  • FIG. 1 is a front view showing the structure of a retractable crawler chassis construction machine
  • FIG. 2 is a schematic view showing the structure of a retractable crawler chassis
  • FIG. 3 is a cross-sectional structural view of FIG. 2A-A
  • FIG. 5 is a cross-sectional view taken along line CC of FIG. 4;
  • FIG. 1 is a front view showing the structure of a retractable crawler chassis construction machine
  • FIG. 2 is a schematic view showing the structure of a retractable crawler chassis
  • FIG. 3 is a cross-sectional structural view of FIG. 2A-A
  • FIG. 5 is a cross-sectional view taken along line CC of FIG. 4
  • FIG. 1 is a front view showing the structure of a retractable crawler chassis construction machine
  • FIG. 2 is a schematic view showing the structure of a retractable crawler chassis
  • FIG. 3 is a cross-sectional structural view of FIG. 2A-A
  • FIG. 5 is a cross-sectional view taken along line
  • Embodiment 1 provides a retractable crawler chassis of a pile driver.
  • the retractable crawler chassis includes a base 1, a left crawler frame 2, a right crawler frame 3, a left telescopic cylinder 18, and a right telescopic cylinder. 19.
  • the base 1 is provided with a rear hollow sliding seat 4 and a front hollow sliding seat 20 which are fixed to the left and right of the base 1 and fixed to the base 1.
  • the rear hollow sliding seat 4 is located at the rear of the base 1, and the front hollow sliding seat 20 is located at the base.
  • the retractable crawler chassis further includes a hollow rear left slide beam 5 and a rear right slide beam 7, a hollow front left slide beam 21 and front Right sliding beam 22, one end of the hollow rear left sliding beam 5 is fixedly coupled with the left crawler frame 2, and the other end is movably inserted into the inner cavity of the rear hollow sliding seat 4 from the left end of the rear hollow sliding seat 4, One end of the rear right sliding beam 7 is fixedly coupled with the right crawler frame 3, and the other end is movably inserted into the inner cavity of the rear hollow sliding seat 4 and the first inner cavity 6 of the rear left sliding beam 5 from the right end of the rear hollow sliding seat 4.
  • One end of the hollow front left sliding beam 21 is fixedly coupled with the left crawler frame 2, and the other end is movably inserted into the inner cavity of the front hollow sliding seat 20 from the left end of the front hollow sliding seat 20, the front right One end of the sliding beam 22 is fixedly coupled with the right crawler frame 3, and the other end is from the front.
  • 20 is a right end empty carriage is movably inserted into the hollow lumen of the front carriage and the lumen 20 of the left sliding beam 21.
  • the rear hollow sliding seat 4, the hollow rear left sliding beam 5 and the rear right sliding beam 7 are provided with a plurality of positioning pin holes, and the hollow rear left sliding beam 5 and the rear right sliding beam are respectively respectively passed through the positioning pin shafts 16, 17.
  • the front hollow sliding seat 20 the hollow front left sliding beam 21 and the front right sliding beam 22 are also provided with a plurality of positioning pin holes, which are respectively hollow through the positioning pins 23 and 24
  • the front left sliding beam 21 and the front right sliding beam 22 and the front hollow sliding seat 20 are fixed to each other, and the expanded width of the left crawler frame 2 and the right crawler frame 3 can be conveniently adjusted by using a plurality of positioning pin holes provided.
  • the left telescopic cylinder 18 is installed between the base 1 and the left crawler frame 2, and the right telescopic cylinder 19 is installed between the base 1 and the right crawler frame 3, and the left telescopic cylinder 18 slides the beam 5 and the front left rear Between the left sliding beams 21, the right telescopic cylinder 19 is between the rear right sliding beam 7 and the front right sliding beam 22.
  • the rear right sliding beam 7 of the retractable crawler chassis of the first embodiment is a hollow structure having a second inner cavity 8.
  • a stepped rear intermediate transition beam 11 is further provided, and the small end 9 of the rear intermediate transition beam 11 is movably inserted into the rear right sliding beam 7 Among the second inner cavities 8, the large end 10 of the intermediate transition beam 11 is located outside the second inner cavity 8 of the rear right sliding beam, and the large end 10 of the rear intermediate transition beam 11 and the rear right sliding beam 7 are insertably movable together.
  • an axially long groove 13 is provided in the rear right sliding beam 7, and is disposed at the front end of the first inner cavity 6 of the hollow rear left sliding beam 5 a projection 12 embedded in the axially long groove 13, the projection 12 being movable within the groove 13 during sliding, and being received by the large end 10 of the rear intermediate transition beam 11 Blocking;
  • the rear intermediate transition beam 11 is provided with an axial long waist groove 14 , which is disposed in the front end of the second inner cavity 8 of the rear right sliding beam 7 and embedded in the axial long waist groove 14
  • the bump 15 , the sliding beam 15 can move in the axial long waist groove 14 during the sliding process, so that the small end 9 of the rear intermediate transition beam 11 can not be separated from the rear right sliding beam 7 when sliding Among the second inner chambers 8, the large end 10 of the intermediate transition beam 11 cannot be detached from the first inner chamber 6 of the hollow rear left sliding beam 5 when sliding.
  • the front intermediate sliding beam 21 and the front right sliding beam 22 of the retractable crawler chassis are also provided with the same front intermediate transition beam and the sliding limit mechanism in the inner cavity of the front right sliding beam 22, which will not be described in detail herein.
  • the rear intermediate transition beam 11 and the front intermediate transition beam are provided with positioning pin holes for fixing the pin shaft.
  • the rear left sliding beam 5 and the front left sliding beam 21 are respectively moved to the left with respect to the rear hollow sliding seat 4 and the front hollow sliding seat 20, respectively, and the rear right sliding beam 7 and the front right sliding beam 22 are respectively sliding relative to the rear.
  • the seat 4 and the front hollow slide 20 are moved to the right.
  • the rear left cross beam 5 and the front left sliding beam 21 have a front end and a middle transition beam respectively
  • the large end contact and the two intermediate transition beams respectively protrude from the cavity of the rear right sliding beam 7 and the front right sliding beam 22;
  • the rear right sliding beam 7 and the front right sliding beam 22 have the convex portions at the front end of the inner cavity respectively
  • the right end of the axial long waist groove on the rear intermediate transition beam 11 and the front intermediate transition beam (the latter intermediate transition beam 11 is described as an example, the front intermediate transition beam is not shown in the figure), and
  • the rear intermediate transition beam 11 and the front intermediate transition beam are respectively protruded from the inner cavity of the rear left sliding beam 5 and the front left sliding beam 21, so that the left crawler frame 2 and the right crawler frame 3 are outwardly widened to the maximum design width.
  • the rear intermediate transition beam 11 and the front intermediate transition beam By means of the rear intermediate transition beam 11 and the front intermediate transition beam, the mutual overlapping of the sliding beams on both sides can be maintained, and the stability of the engineering machine operation is further ensured and improved.
  • the right sliding beam 7 is straight in the cavity of the left sliding beam 5.
  • the right sliding beam 7 needs to extend through the intermediate transition beam. Slide the beam into the cavity of the beam 5 to the left.
  • the retractable crawler chassis provided in the first embodiment can control the left telescopic cylinder 18 and the right telescopic cylinder 19 through the hydraulic system during the state transition, thereby pushing the left crawler frame 2 and the right crawler frame 3 to move to the left.
  • the change in width between the track frame 2 and the right track frame 3 makes the operation very simple and improves the operational performance of the retractable track chassis state transition.
  • the intermediate cross beam can be used to keep the sliding beams on both sides more overlapping, thereby ensuring the operation.
  • the rigidity and strength of the crawler chassis can meet the rigidity and strength requirements of the construction work, and the telescopic crawler chassis can be applied in construction machinery such as large pile drivers.
  • the front and rear two hollow slides penetrate the left and right ends of the base 1 to match the width of the transition state.
  • the retractable crawler chassis provided by the present invention can have a larger width than the width of the base 1 in the working state.
  • the left telescopic cylinder 18 and the right telescopic cylinder 19 are bilaterally symmetrical, and the extension lines of the telescopic directions of the two are slewingly supported by the base 1 and the center of the crawler frame, and the left and right crawler frames 2, 3 are moved to both sides.
  • the left and right crawler frames 2, 3 are balanced, the left and right crawler frames 2, 3 are prevented from being deflected during the movement, thereby causing damage to the cooperation relationship between the sliding beam and the hollow sliding seat.
  • a corresponding telescopic cylinder can be disposed between the corresponding sliding beam and the hollow sliding seat.
  • Synchronous operation of multiple telescopic cylinders can push the left and right crawler frames 2, 3 to move synchronously.
  • a construction machine having the above-described retractable crawler chassis is also provided.
  • the front and rear two hollow sliding seats are included, the front hollow sliding seat 4 is located at the front of the base 1, and the rear hollow sliding seat 20 is located at the rear of the base 1, the front hollow sliding seat 20 and the rear hollow sliding seat 4 Parallel to each other.
  • the four sliding beams are symmetrical back and forth, which can ensure the stability of the engineering machinery such as the pile driver shown in Fig. 1.
  • the retractable crawler chassis provided by the present invention will be described in detail by taking the pile driver shown in FIG. 1 as an example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Jib Cranes (AREA)
  • Body Structure For Vehicles (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

一种可伸缩式履带底盘及具有该底盘的工程机械，包括左履带架（2）、右履带架（3）、底座（1）、左伸缩油缸（18）、右伸缩油缸（19）、左滑动横梁（5、21）和右滑动横梁（7、22）；伸缩油缸（18、19）安装在底座与左履带架之间；底座上设有中空滑座（4），滑动横梁（5、21、7、22）的一端与履带架固定联结，滑动横梁的另一端可移动地插入中空滑座之中，右滑动横梁还插入左滑动横梁的中空部。使工程机械的状态改变或转换更方便，整机行走和作业稳定性更高、更安全可靠。

Description

可伸缩式履带底盘及具有该底盘的工程机械 与之相关申请的交叉引用 本申请要求 2011 年 10 月 11 日提交至中国国家知识产权局、 申请号为 201110305831.6的专利申请的优先权。 技术领域 本发明涉及工程机械的履带底盘技术， 尤其是涉及一种可伸缩式履带底盘， 还涉 及到具有该底盘的履带式工程机械。 背景技术 在工程机械底盘中， 由于履带式行走方式兼具适应性和灵活性， 因此履带底盘在 工程机械中具有广泛的应用， 如在打桩机、 钻孔机、 起重机等均有使用。 随着工程技术的发展， 工程作业也对履带式工程机械提出了更高的要求， 比如说， 近年来， 建筑工程中桩基础工程迅猛发展， 超高建筑不断增加， 桩基础的直径和深度 也不断增加。 桩基础的直径和深度的增加对桩工机械的稳定性提出了更高的要求， 要 求在施工作业中， 履带式底盘宽度能够增加。 同样， 其他的工程作业也对相应履带式 工程机械提出相同的要求， 在施工作业时， 要求履带底盘有较大的宽度， 以保证工程 机械的稳定性。 增加履带底盘的宽度虽然能够解决施工作业时的稳定性问题， 但单纯增加履带底 盘的宽度意味着增大底盘尺寸和重量， 从而带来制造成本上升， 使用过程中能耗增加， 转场运输不便等问题。 为了协调施工作业的稳定性与转场运输的灵活性， 当前的履带 式工程机械已经有可伸缩的结构， 即已经出现可伸缩式履带底盘， 该履带底盘有两种 状态： 作业状态和转场状态， 在进行施工作业时， 履带底盘处于作业状态， 两侧履带 架分别向两侧伸出， 使履带底盘的宽度增加， 以提高工程机械的稳定性； 在运输转场 时， 底盘处于转场状态， 两侧履带架缩回， 使履带底盘的宽度减小， 使转场运输更加 方便。 被公知的 （如机械工业出版社出版的 《桩工机械》 第五章第 79页〜第 92页发表 的） 履带式底盘： 一般是借用履带式起重机的履带底盘。 其不足之处是： 为实现两侧 的履带的收缩和扩宽， 履带支架与底盘的外伸横梁之间存在较大间隙； 而且履带向外 扩宽至最大尺寸后，外伸横梁与履带支架间的搭接量少，在结构上存在不稳定的因素， 会造成作业中的立柱发生摇晃等现象；而且履带展宽尺寸也受到限制：一般≤4300mm。 为了进一步展宽和增加搭接量， 采取了一种铰链板的结构， 运输收缩时两个铰链板打 开， 展宽时两个铰链板合并， 以实现延长横梁、 增加搭接量的目的， 虽然这种结构可 使履带展宽尺寸达到约 4600mm， 但仍存在以下不足： 铰链板结构本身存在不稳定的 问题、 履带支架与外伸横梁之间存在较大间隙的问题仍然存在， 桩架行走和作业仍不 平稳； 因此， 桩架立柱的高度、 搭载工作的重量、 可承受最大工作扭矩等重要性能参 数都要打折扣。 又如专利 CN101806063A—种履带式桩架及其安装方法中公开了：底盘设有底座、 中空外伸横梁、 中空滑动横梁、 滑动横梁， 中空滑动横梁和滑动横梁的一端分别与履 带行走装置固定、 另一端可移动地插入中空的外伸横梁之中， 履带行走装置可借助中 空滑动横梁和滑动横梁相对底盘外伸横梁进行移动，当两侧履带行走装置向内收缩时， 滑动横梁的前端可插入中空滑动横梁的中空部， 形成重叠状态。 虽然因履带行走装置 向内收缩时，滑动横梁与中空滑动横梁可形成重叠状态， 使两侧履带伸出时尺寸扩宽， 增加了桩架整体的稳定性， 但仍存在以下不足： 为了便于运输， 两侧的履带收缩状态 的宽度尺寸要保证≤3300mm， 所以， 当两侧履带向外扩宽至最大尺寸（≤6000mm)时， 滑动横梁与中空滑动横梁已完全脱开， 滑动横梁与外伸横梁间的实际搭接量有一定限 度， 在结构上仍存在不稳定的因素。 又如专利 CN1587543A电动液压履带式桩架公开了： 所述的底盘还设有滑动横梁 和固定装置， 并且外伸横梁是中空结构的， 滑动横梁的一端与履带行走装置固定， 另 一端可移动地插入中空的外伸横梁之中， 履带行走装置即可借助滑动横梁相对底盘外 伸横梁进行移动、 又可借助固定装置与底盘外伸横梁相互刚性固定联接。 由于履带行 走装置借助滑动横梁与底盘中空滑座相互重叠及相对移动， 在保证相互之间有足够的 搭接长度的同时， 使两侧履带行走装置扩宽尺寸比现有技术（4300mm)更宽（可达到 5000〜6000mm); 同时， 在两侧履带行走装置向外扩宽至最大尺寸时， 滑动横梁之间 也可保持相互重叠搭接， 从结构上进一步保证和提高了桩架行走和作业时整体的稳定 性。 而履带行走装置收缩时尺寸仍保持≤3300mm， 无需拆卸履带就可整体运输。 但仍 存在以下不足：如果大型履带桩架要求两侧履带行走装置扩宽尺寸更宽时（>6000mm) 时， 由于结构尺寸制约， 滑动横梁与中空滑动横梁将脱开， 滑动横梁与外伸横梁间的 实际搭接量有限， 在结构上仍存在不稳定的因素。 专利 CN101402377A公开了一种可伸缩式履带底盘， 该履带底盘包括左、 右履带 架、 左、 右伸缩油缸和中心架， 左伸缩油缸安装在中心架与左履带架之间， 右伸缩油 缸安装在中心架与右履带架之间， 左履带架包括左伸缩梁， 右履带架包括右伸缩梁， 左伸缩梁与中心架的左伸缩孔相配合， 右伸缩梁与中心架的右伸缩孔相配合； 左伸缩 油缸的伸缩方向与左伸缩孔中线平行，右伸缩油缸的伸缩方向与右伸缩孔的中线平行。 该可伸缩式履带底盘虽易达到更宽的扩宽尺寸， 但若扩宽至最宽尺寸时， 在结构上仍 存在不稳定的因素。 发明内容 一方面， 本发明所要解决的技术问题是在上述可伸缩式履带底盘的基础上， 提供 一种可伸缩式履带底盘， 履带底盘结构更合理， 以使状态的改变或转换更方便， 整机 行走和作业稳定性更高、 更安全可靠。 为解决上述技术问题， 本发明提供可伸缩式履带底盘包括： 至少一个固定的中空 滑座， 还包括至少一个中空的左滑动横梁、 至少一个右滑动横梁， 所述中空的左滑动 横梁的一端与所述左履带架固定联结、 另一端从所述中空滑座的左端可移动地插入所 述中空滑座的内腔之中； 所述右滑动横梁的一端与所述右履带架固定联结， 另一端从 所述中空滑座的右端可移动地插入所述左滑动横梁的内腔之中。 进一步地， 本发明提供可伸缩式履带底盘包括： 左履带架、 右履带架、 底座、 至 少一左伸缩油缸和至少一个右伸缩油缸，所述左伸缩油缸安装在底座与左履带架之间， 所述右伸缩油缸安装在底座与右履带架之间， 所述底座上设有至少一个固定的中空滑 座， 还包括至少一个中空的左滑动横梁、 至少一个右滑动横梁， 所述中空的左滑动横 梁的一端与左履带架固定联结、 另一端从中空滑座的左端可移动地插入中空滑座的内 腔之中； 所述右滑动横梁的一端与右履带架固定联结， 另一端从中空滑座的右端可移 动地插入中空滑座的内腔和左滑动横梁的内腔之中。 进一步地， 所述中空的左滑动横梁和右滑动横梁在左履带架、 右履带架向内收缩 或向外扩宽至最大幅宽时， 右滑动横梁的前端插入中空左滑动横梁的内腔之中。 左滑 动横梁和右滑动横梁重叠搭接在一起， 从结构上进一步保证和提高了可伸缩式履带底 盘所支撑设备作业时整体的稳定性。 进一步地， 可伸缩式履带底盘还包括阶梯状的中间过渡横梁， 所述右滑动横梁为 具有内腔的中空结构， 中间过渡横梁的一端大， 另一端小， 中间过渡横梁的小端可移 动地插入右滑动横梁的内腔之中， 中间过渡横梁的大端位于右滑动横梁的内腔之外， 中间过渡横梁的大端与右滑动横梁可一同移动地插入中空左滑动横梁的内腔之中， 在 中空左滑动横梁、 右滑动横梁和 /或中间过渡横梁上设有中间过渡横梁滑移限位机构， 使所述的中间过渡横梁的小端在滑动时不能脱离右滑动横梁的内腔之中、 大端在滑动 时不能脱离中空左滑动横梁的内腔之中。 进一步地， 所述滑移限位机构包括： 在右滑动横梁上设有一轴向延伸的长凹槽， 配套地在中空的左滑动横梁的内腔前端设置嵌入长凹槽之中的第一凸块， 滑动横梁在 滑动过程中第一凸块可在凹槽内移动， 而最大行程受到中间过渡横梁的大端的阻挡； 在中间过渡横梁设有一轴向延伸的长腰形凹槽， 在右滑动横梁的内腔前端设置嵌入长 腰形凹槽之中的第二凸块， 滑动横梁在滑动过程中第二凸块可在长腰形凹槽内移动。 两侧履带行走装置在向外扩宽的过程中， 凸块与中间过渡横梁的大端、 长腰形凹槽右 端接触， 并使中间过渡横梁从滑动横梁中伸出来， 使两侧履带行走装置向外扩宽至最 大设计宽度， 也能借助中间过渡横梁保持两侧滑动横梁的有更多的相互搭接， 从结构 上进一步保证和提高了桩架行走和作业时整体的稳定性。 进一步地， 所述中空滑座、 中空的左滑动横梁和右滑动横梁设有定位销孔， 中空 的左滑动横梁和右滑动横梁通过穿过定位销孔的定位销轴与中空滑座相互固定。 进一步地， 所述中空滑座包括前中空滑座和后中空滑座， 所述左滑动横梁包括前 左滑动横梁和后左滑动横梁； 所述右滑动横梁包括前右滑动横梁和后右滑动横梁； 所 述前中空滑座与前左滑动横梁和前右滑动横梁相配合， 所述后中空滑座与后左滑动横 梁和后右滑动横梁相配合。 进一步地， 所述前中空滑座位于底座前部； 所述后中空滑座位于底座后部， 前中 空滑座和后中空滑座相互平行。 进一步地， 所述左伸缩油缸在前左滑动横梁和后左滑动横梁之间， 所述右伸缩油 缸在前右滑动横梁和后右滑动横梁之间。 进一步地， 所述中空滑座贯通底座左端和右端。 在不冲突的情况下， 以上改进或优选技术方案可单独或合并实施。 所述中空的左 滑动横梁、 右滑动横梁及其它左右部件可以互换左右位置。 另一方面， 本发明所要解决的技术问题是提供一种履带式工程机械， 其履带底盘 结构更合理， 工作状态的改变或转换更方便， 整机行走和作业稳定性更高、 更安全可 罪。 为解决上述技术问题， 本发明提供的履带式工程机械包括履带底盘， 所述履带底 盘为前述任一项所述技术方案的可伸缩式履带底盘。 本发明提供的履带式工程机械包括履带式桩工机械、履带式钻机、履带式压桩机、 履带式夯机、 履带式掘削机、 履带式铣削机、 履带式搅拌机、 履带式挖掘机、 履带式 运输机、 履带式作业车、 履带式起重机、 履带式矿用机械等。 本发明可伸缩式履带底盘具有如下积极效果及优点： 由于左、 右履带架借助滑动 横梁与底盘中空滑座相互重叠及相对移动， 在保证滑动横梁与中空滑座之间有足够搭 接量的同时， 使两侧履带行走装置扩宽尺寸比现有技术（5000〜6000mm)更宽（可达 到 6000〜7000mm)， 并提高了工程机械行走和作业时的稳定性； 优选方案中， 在两侧 履带行走装置向外扩宽至最大尺寸时， 借助中间过渡横梁使滑动横梁之间仍然保持有 更多的相互重叠搭接，从结构上进一步保证和提高了工程机械行走和作业时的稳定性。 由于左、 右履带架既能相对底座移动缩扩， 又可与滑动横梁刚性联接固定， 从结 构形式上保证了工程机械行走及作业的稳定性。 稳定性提高的有益效果在于：
①提高了工程机械施工时的安全可靠性， 可防止工程机械发生倾翻等事故；
②当工程机械立柱或悬臂高度不变时，可在工程机械上安装使用更大型号的打桩、 钻孔或起吊器具等作业装置， 扩大工程机械的使用范围和利用率； ③当工程机械配备的作业装置型号不变时， 可增加立柱或悬臂的长度， 加大作业 范围， 提高施工效率；
④在满足工程机械作业安全和稳定性的前提下， 易使工程机械的履带行走装置收 缩后的尺寸≤3300mm， 无需拆卸履带就可整体运输移动， 方便转场且效率高。 附图说明 构成本申请的一部分的附图用来提供对本发明的进一步理解， 本发明的示意性实 施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在附图中： 图 1是具有可伸缩式履带底盘工程机械的实施例主视结构示意图； 图 2是可伸缩式履带底盘结构示意图； 图 3是图 2A-A向剖视结构示意图； 图 4是图 3所示实施例底盘收缩状态结构示意图； 图 5是图 4的 C-C向剖视图。 具体实施方式 下面结合附图对本发明进行详细描述， 本部分的描述仅是示范性和解释性， 不应 对本发明的保护范围有任何的限制作用。 实施例一提供了一种桩机的可伸缩式履带底盘， 如图 2所示， 该可伸缩式履带底 盘包括底座 1、 左履带架 2、 右履带架 3、 左伸缩油缸 18和右伸缩油缸 19。 底座 1上 设有贯通底座 1的左右并固定在底座 1上的后中空滑座 4、 前中空滑座 20， 所述后中 空滑座 4位于底座 1的后部， 前中空滑座 20位于底座 1的前部； 后中空滑座 4和前中 空滑座 20相互平行；该可伸缩式履带底盘还包括中空的后左滑动横梁 5和后右滑动横 梁 7、中空的前左滑动横梁 21和前右滑动横梁 22，所述中空的后左滑动横梁 5的一端 与左履带架 2固定联结、 另一端从后中空滑座 4的左端可移动地插入后中空滑座 4的 内腔之中， 所述后右滑动横梁 7的一端与右履带架 3固定联结， 另一端从后中空滑座 4的右端可移动地插入后中空滑座 4的内腔和后左滑动横梁 5的第一内腔 6之中； 所 述中空的前左滑动横梁 21的一端与左履带架 2固定联结、 另一端从前中空滑座 20的 左端可移动地插入前中空滑座 20的内腔之中， 所述前右滑动横梁 22的一端与右履带 架 3固定联结， 另一端从前中空滑座 20的右端可移动地插入前中空滑座 20的内腔和 左滑动横梁 21的内腔之中。 所述后中空滑座 4、 中空的后左滑动横梁 5和后右滑动横 梁 7设有多个定位销孔，通过定位销轴 16、 17分别将中空的后左滑动横梁 5和后右滑 动横梁 7与后中空滑座 4相互固定； 所述前中空滑座 20、 中空的前左滑动横梁 21和 前右滑动横梁 22也设有多个定位销孔， 通过定位销轴 23、 24分别将中空的前左滑动 横梁 21和前右滑动横梁 22与前中空滑座 20相互固定，利用设置的多个定位销孔，可 方便地调节左履带架 2、 右履带架 3扩展的幅宽。 所述左伸缩油缸 18安装在底座 1与 左履带架 2之间，所述右伸缩油缸 19安装在底座 1与右履带架 3之间，所述左伸缩油 缸 18在后左滑动横梁 5和前左滑动横梁 21之间，所述右伸缩油缸 19在后右滑动横梁 7和前右滑动横梁 22之间。 如图 3所示， 实施例一可伸缩式履带底盘的后右滑动横梁 7为具有第二内腔 8的 中空结构。 后左滑动横梁 5和后右滑动横梁 7的第二内腔 8内， 还设有阶梯状的后中 间过渡横梁 11， 后中间过渡横梁 11的小端 9可移动地插入后右滑动横梁 7的第二内 腔 8之中， 中间过渡横梁 11的大端 10位于后右滑动横梁的第二内腔 8之外， 后中间 过渡横梁 11的大端 10与后右滑动横梁 7可一同移动地插入中空的后左滑动横梁 5的 第一内腔 6之中， 在后右滑动横梁 7上设有一轴向长凹槽 13， 配套地在中空的后左滑 动横梁 5的第一内腔 6前端设置嵌入所述轴向长凹槽 13之中的凸块 12， 滑动横梁在 滑动过程中所述凸块 12可在凹槽 13内移动， 而受到后中间过渡横梁 11的大端 10的 阻挡； 在所述后中间过渡横梁 11设有一轴向长腰形凹槽 14， 配套地在后右滑动横梁 7 的第二内腔 8前端设置嵌入所述轴向长腰形凹槽 14之中的凸块 15， 滑动横梁在滑动 过程中所述凸块 15可在轴向长腰形凹槽 14内移动， 使后中间过渡横梁 11 的小端 9 在滑动时不能脱离后右滑动横梁 7的第二内腔 8之中、 中间过渡横梁 11的大端 10在 滑动时不能脱离中空的后左滑动横梁 5的第一内腔 6之中。 该可伸缩式履带底盘的前 左滑动横梁 21和前右滑动横梁 22的内腔内也设有与前述结构相同的前中间过渡横梁 及滑移限位机构， 在此不再详述。在后中间过渡横梁 11及前中间过渡横梁设有供销轴 固定的定位销孔。 实施例一提供的可伸缩式履带底盘的工作过程如下：当左伸缩油缸 18与右伸缩油 缸 19的活塞处于收缩状态时 （参见图 2)， 如图 4和图 5所示， 后左滑动横梁 5和前 左滑动横梁 21分别在后中空滑座 4和前中空滑座 20的空腔内， 中空的后右滑动横梁 7和前右滑动横梁 22分别通过后中空滑座 4和前中空滑座 20的右侧伸入后左滑动横 梁 5和前左滑动横梁 21的空腔内， 可伸缩式履带底盘收缩至最窄， 便于运输和转场。 在进行施工作业， 需要增加履带底盘的宽度时， 使左伸缩油缸 18与右伸缩油缸 19的 活塞伸出缸体， 推动左履带架 2和右履带架 3分别向两侧移动， 再参见图 2和图 3， 后左滑动横梁 5和前左滑动横梁 21分别相对于后中空滑座 4和前中空滑座 20向左移 动， 后右滑动横梁 7和前右滑动横梁 22分别相对于后中空滑座 4和前中空滑座 20向 右移动。 当左履带架 2和右履带架 3分别向外扩宽的过程中， 滑动横梁移动到一定位 置时，后左滑动横梁 5和前左滑动横梁 21内腔前端的凸块与分别与其中间过渡横梁的 大端接触、并使两个中间过渡横梁分别从后右滑动横梁 7和前右滑动横梁 22的空腔内 伸出； 后右滑动横梁 7和前右滑动横梁 22内腔前端的凸块分别与后中间过渡横梁 11 和前中间过渡横梁（本发明中仅以后中间过渡横梁 11为例进行描述， 前中间过渡横梁 未在图中体现）上的轴向长腰形凹槽的右端接触， 并使后中间过渡横梁 11和前中间过 渡横梁分别从后左滑动横梁 5和前左滑动横梁 21的内腔内伸出，使左履带架 2和右履 带架 3向外扩宽至最大设计宽度时，也能借助后中间过渡横梁 11和前中间过渡横梁保 持两侧滑动横梁的有更多的相互搭接， 从结构上进一步保证和提高了工程机械作业时 的稳定性。 通常， 当履带展宽在一定宽度内， 例如小于 6000mm时， 右滑动横梁 7— 直都会位于左滑动横梁 5的腔体内， 当履带展宽大于 6000mm时， 右滑动横梁 7就需 要借助中间过渡横梁伸入到左滑动横梁 5的腔体内。 在滑动横梁移动过程中， 左履带架 2和右履带架 3达到预定位置后， 将相应滑动 横梁、 中空滑座与中间过渡横梁通过定位销轴 16、 17、 23、 24锁止， 使履带底盘处于 作业状态或转场状态。 根据以上描述， 实施例一提供的可伸缩式履带底盘在进行状态转换时， 可以通过 液压系统控制左伸缩油缸 18和右伸缩油缸 19， 进而推动左履带架 2和右履带架 3移 动， 实现左履带架 2、 右履带架 3之间宽度的改变， 使操作过程非常简单， 提高了可 伸缩式履带底盘状态转换的操作性能。 同时， 由于该履带底盘在作业状态下， 滑动横 梁与中空滑座之间有较大的相互搭接， 尤其是能够借助中间过渡横梁保持两侧滑动横 梁有更多的相互搭接， 能够保证作业状态下， 该履带底盘的刚度和强度， 能够满足施 工作业对刚度和强度的要求， 使可伸缩式履带底盘能够在大型的桩机等工程机械中应 用。 本实施例中， 为了在作业状态下， 使可伸缩式履带底盘提供更大的扩展跨距， 前、 后两个中空滑座均贯通底座 1的左右两端， 与转场状态下的宽度相比， 本发明提供的 可伸缩式履带底盘， 在作业状态下， 可以增加的宽度比底座 1的宽度更大。 本实施例中， 左伸缩油缸 18和右伸缩油缸 19左右对称， 且二者的伸缩方向的延 长线通过底座 1回转支承和履带架的中心， 在左、 右履带架 2、 3向两侧移动时， 能够 保证左、 右履带架 2、 3受力平衡， 避免左、 右履带架 2、 3在移动过程中产生偏斜， 导致损害滑动横梁与中空滑座的配合关系。 本领域技术人员可以理解， 为了避免左、 右履带架 2、 3偏斜， 也可以在相应滑动横梁与中空滑座之间单设相应的伸缩油缸。 多 个伸缩油缸同步工作， 就能推动左、 右履带架 2、 3同步移动。 本发明的另一个方面， 还提供了一种具有上述可伸缩式履带底盘的工程机械。 本 实施例中， 包括前、 后两个中空滑座， 前中空滑座 4位于底座 1的前部， 后中空滑座 20位于底座 1的后部， 前中空滑座 20和后中空滑座 4相互平行。 并使四个滑动横梁 前后左右对称， 能够保证如图 1所示桩机等工程机械受力的稳定。 上述仅以如图 1 所示的桩机为例对本发明提供的可伸缩式履带底盘进行详细描 述， 本领域技术人员可以理解， 在其他类型的履带工程机械中， 利用上述可伸缩式履 带底盘同样能够达到上述发明目的， 具备相应的技术效果。 由于可伸缩式履带底盘具备上述的技术特点和技术效果， 带有上述可伸缩式履带 底盘的履带式工程机械也具备上述的技术特点和技术效果。 以上所述仅为本发明的优选实施例而已， 对于本领域的技术人员来说， 本发明可 以有各种更改和变化。凡在本发明权利要求限定的精神和原则之内，所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种可伸缩式履带底盘， 包括底座、 左履带架和右履带架， 其特征在于： 所述 底座上设有至少一个固定的中空滑座， 还包括至少一个中空的左滑动横梁、 至 少一个右滑动横梁， 所述中空的左滑动横梁的一端与所述左履带架固定联结、 另一端从所述中空滑座的左端可移动地插入所述中空滑座的内腔之中； 所述右 滑动横梁的一端与所述右履带架固定联结， 另一端从所述中空滑座的右端可移 动地插入所述左滑动横梁的内腔之中。
2. 一种可伸缩式履带底盘， 包括底座、 左履带架、 右履带架、 至少一左伸缩油缸 和右伸缩油缸， 所述左伸缩油缸安装在所述底座与所述左履带架之间， 所述右 伸缩油缸安装在所述底座与所述右履带架之间， 其特征在于： 所述底座上设有 至少一个固定的中空滑座， 还包括至少一个中空的左滑动横梁、 至少一个右滑 动横梁， 所述中空的左滑动横梁的一端与所述左履带架固定联结、 另一端从所 述中空滑座的左端可移动地插入所述中空滑座的内腔之中； 所述右滑动横梁的 一端与所述右履带架固定联结， 另一端从所述中空滑座的右端可移动地插入所 述左滑动横梁的内腔之中。
3. 根据权利要求 1或 2所述的可伸缩式履带底盘， 其特征在于： 所述中空的左滑 动横梁和右滑动横梁在左履带架、右履带架向内收缩或向外扩宽至最大幅宽时， 右滑动横梁的前端插入中空左滑动横梁的内腔之中。
4. 根据权利要求 1或 2所述的可伸缩式履带底盘， 其特征在于： 还包括阶梯状的 中间过渡横梁， 所述右滑动横梁为具有内腔的中空结构， 所述中间过渡横梁的 一端大， 另一端小， 所述中间过渡横梁的小端可移动地插入所述右滑动横梁的 内腔之中， 所述中间过渡横梁的大端位于右滑动横梁的内腔之外， 所述中间过 渡横梁的大端与所述右滑动横梁可一同移动地插入所述中空的左滑动横梁的内 腔之中， 在所述中空的左滑动横梁、所述右滑动横梁和 /或所述中间过渡横梁上 设有中间过渡横梁的滑移限位机构， 使所述的中间过渡横梁的小端在滑动时不 能脱离右滑动横梁的内腔之中、 大端在滑动时不能脱离所述中空的左滑动横梁 的内腔之中。
5. 根据权利要求 4所述的可伸缩式履带底盘， 其特征在于： 所述滑移限位机构包 括： 在所述右滑动横梁上设有一沿轴向延伸的长凹槽， 配套地在所述中空的左 滑动横梁的内腔前端设置嵌入所述长凹槽之中的第一凸块， 所述第一凸块在所 述长凹槽内可移动， 而所述第一凸块的最大行程受到所述中间过渡横梁的大端 的阻挡； 在所述中间过渡横梁设有一沿轴向延伸的长腰形凹槽， 配套地在所述 右滑动横梁的内腔前端设置嵌入所述长腰形凹槽之中的第二凸块， 所述第二凸 块在所述长腰形凹槽内可移动。
6. 根据权利要求 1或 2所述的可伸缩式履带底盘， 其特征在于： 所述中空滑座、 中空的左滑动横梁和右滑动横梁设有定位销孔， 通过定位销轴分别将中空的左 滑动横梁和右滑动横梁与中空滑座相互固定。
7. 根据权利要求 2所述的可伸缩式履带底盘， 其特征在于： 所述中空滑座包括前 中空滑座和后中空滑座， 所述左滑动横梁包括前左滑动横梁和后左滑动横梁； 所述右滑动横梁包括前右滑动横梁和后右滑动横梁； 所述前中空滑座与前左滑 动横梁和前右滑动横梁相配合， 所述后中空滑座与后左滑动横梁和后右滑动横 梁相配合。
8. 根据权利要求 7所述的可伸缩式履带底盘， 其特征在于： 所述前中空滑座位于 底座前部；所述后中空滑座位于底座后部，前中空滑座和后中空滑座相互平行。
9. 根据权利要求 7所述的可伸缩式履带底盘， 其特征在于： 所述左伸缩油缸在前 左滑动横梁和后左滑动横梁之间， 所述右伸缩油缸在前右滑动横梁和后右滑动 横梁之间。
10. 根据权利要求 1或 2所述的可伸缩式履带底盘， 其特征在于， 所述中空滑座贯 通底座左右。
11. 一种履带式工程机械， 包括履带底盘， 其特征在于： 所述履带底盘为权利要求 1-10任一项所述的可伸缩式履带底盘。
12. 根据权利要求 11所述的履带式工程机械，其特征在于：所述工程机械包括履带 式桩工机械、 履带式钻机、 履带式压桩机、 履带式夯机、 履带式掘削机、 履带 式铣削机、 履带式搅拌机、 履带式挖掘机、 履带式运输机、 履带式作业车、 履 带式起重机、 履带式矿用机械。
PCT/CN2011/083264 2011-10-11 2011-11-30 可伸缩式履带底盘及具有该底盘的工程机械 WO2013053173A1 (zh)

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