WO2013143264A1 - Engineering machinery and landing leg positioning and supporting device thereof - Google Patents
Engineering machinery and landing leg positioning and supporting device thereof Download PDFInfo
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- WO2013143264A1 WO2013143264A1 PCT/CN2012/082037 CN2012082037W WO2013143264A1 WO 2013143264 A1 WO2013143264 A1 WO 2013143264A1 CN 2012082037 W CN2012082037 W CN 2012082037W WO 2013143264 A1 WO2013143264 A1 WO 2013143264A1
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- leg
- support device
- positioning support
- cylinder
- leg positioning
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Classifications
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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
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
Definitions
- the present invention relates to the field of construction machinery, and more particularly to a construction machine and a leg positioning support device thereof.
- legs such as large tonnage, oversized tonnage wheeled cranes.
- a wheeled crane Taking a wheeled crane as an example, it mainly uses large-span radiating legs. Due to the large bearing capacity, the cross-section design of the outriggers is increased. Therefore, the legs cannot be designed on the frame like the small tonnage wheeled cranes. Radiant leg structure is widely used. This type of leg structure first needs to realize the swinging and retracting of the legs.
- 1 to 3 are schematic views showing the structure of a positioning support device for three types of legs in the prior art. In the positioning support device shown in Fig. 1, one end of the cylinder 30 is mounted on the chassis 10, and the other end is connected to the leg.
- FIG. 2 differs from FIG. 1 in that a strut 40 is added to the base of FIG. Wherein, one end of the strut 40 is connected to the chassis 10, and the other end is connected to the leg 20.
- the stay 40 is disposed outside the cylinder 30. Therefore, the length of the strut 40 is long, and there is a problem of the stability of the strut of the slender rod.
- 3 differs from FIG. 2 in that the strut 40 of FIG.
- FIG. 3 is located inside the cylinder 30, and the length of the cylinder 30 is increased as compared with FIG.
- the positioning support device of Figures 2 and 3 allows the relative position between the leg 20 and the chassis 10 to be relatively fixed, and the turning moment of the upper vehicle during the starting rotation and rotation is constituted by the chassis 10, the stay 40 and the leg 20. A stable triangular mechanism is transmitted to the ground. Please refer to Fig. 2 and Fig. 3.
- the pins of the four struts need to be unplugged first, and then the pins are inserted after the legs are moved in place. In this process, due to the problem of over-positioning of the cylinder and the struts, the pins are difficult to align and the operation is complicated.
- the present invention is directed to an engineering machine and its leg positioning support device to solve the problems of high cost and inconvenient operation in the prior art.
- a leg positioning support device for a construction machine comprising: a cylinder, the cylinder is mounted on a chassis of the construction machine; a strut, one end of the strut and a piston of the cylinder The rod is pivotally connected and the other end is pivotally coupled to the legs of the work machine; a locking member that locks the piston rod in at least one position that is fixed relative to the chassis.
- the leg positioning support device further includes a guide rail disposed on the chassis, and the oil cylinder is slidably coupled to the guide rail. Further, a locking hole that cooperates with the locking member is disposed on the rail.
- a locking hole is respectively provided at a position of the guide rail corresponding to the fully extended position of the cylinder and a fully contracted position.
- the guide rail has a C-shaped cross section, and the opening of the C-shaped cross section is upward.
- one or more struts are respectively disposed on both sides of the cylinder.
- the cross section of the strut is rectangular, circular, circular, or variable in cross section.
- the locking member is a pin.
- the angle between the strut and the leg is 90° ⁇ 15°.
- FIG. 1 is a schematic structural view showing a positioning support device of a leg of a first form in the prior art
- FIG. 2 is a schematic view showing a second form of the prior art.
- FIG. 4 is a schematic structural view showing the positioning support device of the present invention in a running state
- 5 is a schematic structural view showing the positioning support device of the present invention in an operating state
- FIG. 6 is a schematic sectional view showing the first type of strut
- FIG. 7 is a view schematically showing the second type of strut
- FIG. 9 is a schematic cross-sectional view of the guide rail.
- a leg positioning support device for a construction machine is provided. As shown in FIG. 4 and FIG.
- the leg positioning support device of the present invention comprises: a cylinder 30, the cylinder 30 is mounted on the chassis 10 of the construction machine; the strut 40, one end of the strut 40 and the piston rod of the cylinder 30 are pivotable The ground connection is connected, and the other end is pivotally connected to the leg 20 of the construction machine; the locking member 50, the locking member 50 locks the piston rod in at least one position opposite to the chassis 10.
- the cylinder 30 is disposed in the direction of travel of the construction machine.
- one or more struts 40 are respectively disposed on two sides of the cylinder 30, so that one cylinder can be used to realize the positioning support of the two legs on both sides thereof, and the hydraulic center is correspondingly reduced.
- the locking member 50 is a pin.
- the locking member 50 may be of other forms, such as a bolt or the like.
- the leg positioning support device is gathered at the position shown in FIG.
- the cylinder 30 is in a fully extended state, the legs 20 on both sides are in a collapsed state, and the legs 20 are in a locked state under the action of the locking member 50 to prevent the legs from swinging during the running of the chassis.
- the locking member 50 will be operated first to unlock the piston rod.
- the cylinder 30 is contracted, and one end of the strut 40 is moved together to swing the leg 20 to the outside. Out.
- the legs 20 also move into position.
- the lock member 50 is operated to lock the piston rod.
- the support of the legs is completely dependent on the struts, so that the two functions of the oil cylinders from the swing and the support in the prior art become the function of only swinging, thereby reducing the cylinder size and further reducing the cost.
- the leg positioning support device further includes a guide rail 60 disposed on the chassis 10, the cylinder 30 being slidably coupled to the rail 60.
- the guide rail 60 is provided with a locking hole that cooperates with the locking member 50.
- a locking hole is provided at a position of the guide rail 60 corresponding to the fully extended position of the cylinder 30 and the fully contracted position, respectively.
- the bearing effect of the strut reduces the size of the strut (the strut is approximately positive pressure due to the inertial force and the turning moment, so the force component is small and the size is correspondingly reduced), which reduces the weight of the strut.
- the cross-section of the struts 40 can be rectangular, circular (or rod-like in other cross-sections), annular (or tubular in other cross-section) or variable-section (e.g., at different locations).
- the cross sections are different) to suit different needs.
- the guide rail 60 has a C-shaped cross section, and the opening of the C-shaped cross section is upward. Locking holes are provided at both ends of the guide rail 60.
- the construction machine of the present invention comprises a leg and a leg positioning support device for positioning and supporting the leg, and the leg positioning support device is the leg positioning in the above embodiments.
- construction machinery is a crane.
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Abstract
Engineering machinery and a landing leg positioning and supporting device thereof. The landing leg positioning and supporting device comprises: an oil cylinder (30), the oil cylinder (30) being mounted on a chassis (10) of the engineering machinery; a supporting rod (40), one end of the supporting rod (40) being pivotably connected to a piston rod of the oil cylinder (30), and the other end being pivotably connected to a landing leg (20) of the engineering machinery; and a locking piece (50), the locking piece (50) locking the piston rod to at least one position which is relatively fixed with the chassis (10). The supporting rod (40) is driven by the landing leg (20) to swing, position, and support the landing leg (20), so that the oil cylinder (30) only has a function of rotation, thereby reducing the size of the oil cylinder and reducing the cost. In addition, the landing leg positioning and supporting device avoids the over-positioning problem of the supporting rod (40) and the oil cylinder (30), so that the length of the supporting rod (40) does not need to be adjusted, having the advantages of convenient operation and high work efficiency.
Description
工程机械及其支腿定位支撑装置 技术领域 本发明涉及工程机械领域， 更具体地，涉及一种工程机械及其支腿定位支撑装置。 背景技术 现有技术中很多工程车辆都带有支腿， 例如大吨位、 超大吨位的轮式起重机。 以 轮式起重机为例， 它主要采用大跨距辐射式支腿， 因承载大， 支腿结构截面设计增大， 因而， 不能像中小吨位轮式起重机那样将支腿设计在车架上， 所以广泛采用辐射式的 支腿结构形式。 这种支腿结构形式首先需要实现支腿的摆出与收回。 图 1-图 3分别示出了现有技术中的三种支腿的定位支撑装置的结构示意图。 在图 1所示的定位支撑装置中， 油缸 30的一端安装在底盘 10上， 另一端与支腿 TECHNICAL FIELD The present invention relates to the field of construction machinery, and more particularly to a construction machine and a leg positioning support device thereof. BACKGROUND OF THE INVENTION Many engineering vehicles in the prior art have legs, such as large tonnage, oversized tonnage wheeled cranes. Taking a wheeled crane as an example, it mainly uses large-span radiating legs. Due to the large bearing capacity, the cross-section design of the outriggers is increased. Therefore, the legs cannot be designed on the frame like the small tonnage wheeled cranes. Radiant leg structure is widely used. This type of leg structure first needs to realize the swinging and retracting of the legs. 1 to 3 are schematic views showing the structure of a positioning support device for three types of legs in the prior art. In the positioning support device shown in Fig. 1, one end of the cylinder 30 is mounted on the chassis 10, and the other end is connected to the leg.
20连接。 这样， 不用增加其它的部件， 只需要将油缸 30的长度增大， 可即实现对支 腿的摆动定位与支撑， 并承受一定的载荷。 但是， 其缺点是增加了成本。 图 2与图 1的不同之处在于， 在图 1的基础上增加了撑杆 40。 其中， 撑杆 40的 一端与底盘 10连接， 另一端与支腿 20连接。 撑杆 40设置在油缸 30的外侧。 因此， 撑杆 40的长度较长， 存在细长杆的压杆稳定性问题。 图 3与图 2的不同之处在于， 图 3的撑杆 40位于油缸 30的内侧， 油缸 30的长度与图 2相比会有所增长。 图 2和图 3 中的定位支撑装置使支腿 20与底盘 10之间的相对位置比较固定， 上车在启动回转和 回转过程中的回转力矩通过底盘 10、撑杆 40和支腿 20构成的稳定的三角形机构传递 到地面。 请参考图 2和图 3， 在支腿摆开和收回时， 需要先将四个撑杆的销子拔开， 等支腿运动到位后再插入销子。 在此过程中， 因油缸与撑杆存在过定位的问题， 销子 很难对位， 操作起来比较复杂。 另外， 在图 1-图 3所示的三种方式中， 均需要采用四个油缸作为驱动装置， 才能 实现对四个支腿的定位支撑， 具有成本高的缺点。 发明内容 本发明旨在提供一种工程机械及其支腿定位支撑装置， 以解决现有技术成本高、 操作不便的问题。
为解决上述技术问题， 根据本发明的一个方面， 提供了一种工程机械的支腿定位 支撑装置， 包括： 油缸， 油缸安装在工程机械的底盘上； 撑杆， 撑杆的一端与油缸的 活塞杆可枢转地连接， 另一端与工程机械的支腿可枢转地连接； 锁定件， 锁定件将活 塞杆锁定在与底盘相对固定的至少一个位置上。 进一步地，支腿定位支撑装置还包括设置在底盘上的导轨， 油缸与导轨滑动连接。 进一步地， 导轨上设置有与锁定件配合的锁定孔。 进一步地， 导轨的对应于油缸的完全伸出的位置处和完全收缩的位置处分别设置 有一个锁定孔。 进一步地， 导轨具有 C形截面， C形截面的开口向上。 进一步地， 油缸的两侧分别设置有一个或多个的撑杆。 进一步地， 撑杆的截面是矩形、 圆形、 环形、 或变截面的。 进一步地， 锁定件是销轴。 进一步地， 当支腿完全打开时， 撑杆与支腿的夹角为 90°±15°。 根据本发明的另一个方面， 提供了一种工程机械， 包括支腿和用于对支腿进行定 位和支撑的支腿定位支撑装置， 该支腿定位支撑装置是上述的支腿定位支撑装置。 本发明通过支腿驱动撑杆对支腿进行摆出、 定位和支撑， 使得油缸仅起到摆转的 作用， 因而减小了油缸大小， 降低了成本。 另外， 本发明不存在撑杆与油缸的过定位 问题， 无需调节撑杆的长度， 具有操作方便、 工作效率高的特点。 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 示意性示出了现有技术中的第一种形式的支腿的定位支撑装置的结构示意 图； 图 2 示意性示出了现有技术中的第二种形式的支腿的定位支撑装置的结构示意 图；
图 3 示意性示出了现有技术中的第三种形式的支腿的定位支撑装置的结构示意 图； 图 4示意性示出了本发明中的定位支撑装置在行驶状态时的结构示意图； 图 5示意性示出了本发明中的定位支撑装置在工作状态时的结构示意图； 图 6示意性示出了第一种撑杆的截面示图； 图 7示意性示出了第二种撑杆的截面示图； 图 8示意性示出了第三种撑杆的截面示图； 以及 图 9示意性示出了导轨的截面示意图。 图中附图标记： 10、 底盘； 20、 支腿； 30、 油缸； 40、 撑杆； 50、 锁定件； 60、 导轨。 具体实施方式 以下结合附图对本发明的实施例进行详细说明， 但是本发明可以由权利要求限定 和覆盖的多种不同方式实施。 作为本发明的第一方面， 提供了一种工程机械的支腿定位支撑装置。 如图 4和图 5所示， 本发明的支腿定位支撑装置包括： 油缸 30， 油缸 30安装在工程机械的底盘 10上； 撑杆 40， 撑杆 40的一端与油缸 30的活塞杆可枢转地连接， 另一端与工程机械 的支腿 20可枢转地连接； 锁定件 50， 锁定件 50将活塞杆锁定在与底盘 10相对固定 的至少一个位置上。优选地， 油缸 30沿工程机械的行驶的方向设置。在优选的实施例 中， 油缸 30的两侧分别设置有一个或多个撑杆 40， 这样就可以使用一个油缸实现对 其两侧的两个支腿的定位支撑， 也相应的减少了液压所需要的阀及相应的电气控制设 备， 从而降低了成本， 同时也提高了可靠性。 优选地， 锁定件 50是销轴， 当然， 锁定 件 50也可以是其它形式的， 例如螺栓等。 在行驶状态时， 支腿定位支撑装置收拢于图 4所示的位置。此时， 油缸 30位于完 全伸出的状态，两侧的支腿 20处于收拢的状态，支腿 20在锁定件 50的作用下处于锁 定状态， 以避免支腿在底盘行驶过程中发生摆动。 请参考图 5， 当需要将支腿 20摆出时， 先将操作锁定件 50， 以解除对活塞杆的锁 定。 接着， 使油缸 30收缩， 并带动撑杆 40的一端一起运动， 从而将支腿 20向外侧摆
出。 当油缸 30完全收缩到位后， 支腿 20也运动到位。 此时， 再操作锁定件 50将活塞 杆锁定。 支腿的支撑完全依靠撑杆进行， 使得油缸由现有技术中的摆转加支撑承载的 两个作用， 变成了仅具有摆转的作用， 因而减小了油缸大小， 进一步降低了成本。 另 夕卜， 与现有技术中的增加撑杆来承受回转力矩和回转惯性力的情形相比， 本发明不存 在撑杆与油缸的过定位问题， 无需调节撑杆的长度 （现有技术中需调节撑杆的长度）， 因而提高了工作效率。 在一个优选的实施例中， 支腿定位支撑装置还包括设置在底盘 10上的导轨 60， 油缸 30与导轨 60滑动连接。 优选地， 导轨 60上设置有与锁定件 50配合的锁定孔。 进一步地， 导轨 60的对应于油缸 30的完全伸出的位置处和完全收缩的位置处分别设 置有一个锁定孔。 这样， 当需要锁定时， 只需要将锁定件 50插入导轨 60上的锁定孔 和活塞杆上的相应锁定位置处即可。 由于活塞杆的完全伸出状态和完全收缩状态的长 度相对来说是比较固定的， 很容易将锁定件 50与锁定孔对准， 从而使锁定的操作使得 不再复杂。 如图 5所示， 当支腿 20完全打开时， 撑杆 40与支腿 20的夹角为 90°±15°， 因而 改变了现有技术中该夹角一般小于 45°的问题， 提高了撑杆的承载效果， 减小了撑杆 的大小 （由于承受回转惯性力和回转力矩时， 撑杆近似正压力， 因而分力小， 其尺寸 也相应地减少）， 减轻了撑杆的重量。 如图 6、 7和 8所示，撑杆 40的截面可以是矩形、圆形（或其它截面形式的棒状）、 环形（或其它截面形式的管状）或变截面的 （例如， 在不同位置的截面是不同的）， 以 适应于不同的需要。 如图 9所示， 导轨 60具有 C形截面， C形截面的开口向上。 锁定孔设置在导轨 60的两端。 作为本发明的第二方面， 提供了一种工程机械。 请再次参考图 4和图 5， 本发明 中的工程机械包括支腿和用于对支腿进行定位支撑的支腿定位支撑装置， 该支腿定位 支撑装置是上述各实施例中的支腿定位支撑装置。 特别地， 工程机械是起重机。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 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。
20 connections. Thus, without adding other components, it is only necessary to increase the length of the cylinder 30, so that the swinging positioning and support of the legs can be achieved, and a certain load can be withstood. However, its disadvantage is the increased cost. 2 differs from FIG. 1 in that a strut 40 is added to the base of FIG. Wherein, one end of the strut 40 is connected to the chassis 10, and the other end is connected to the leg 20. The stay 40 is disposed outside the cylinder 30. Therefore, the length of the strut 40 is long, and there is a problem of the stability of the strut of the slender rod. 3 differs from FIG. 2 in that the strut 40 of FIG. 3 is located inside the cylinder 30, and the length of the cylinder 30 is increased as compared with FIG. The positioning support device of Figures 2 and 3 allows the relative position between the leg 20 and the chassis 10 to be relatively fixed, and the turning moment of the upper vehicle during the starting rotation and rotation is constituted by the chassis 10, the stay 40 and the leg 20. A stable triangular mechanism is transmitted to the ground. Please refer to Fig. 2 and Fig. 3. When the legs are opened and retracted, the pins of the four struts need to be unplugged first, and then the pins are inserted after the legs are moved in place. In this process, due to the problem of over-positioning of the cylinder and the struts, the pins are difficult to align and the operation is complicated. In addition, in the three modes shown in FIG. 1 to FIG. 3, four cylinders are required as the driving device, so that the positioning support of the four legs can be realized, which has the disadvantage of high cost. SUMMARY OF THE INVENTION The present invention is directed to an engineering machine and its leg positioning support device to solve the problems of high cost and inconvenient operation in the prior art. In order to solve the above technical problem, according to an aspect of the present invention, a leg positioning support device for a construction machine is provided, comprising: a cylinder, the cylinder is mounted on a chassis of the construction machine; a strut, one end of the strut and a piston of the cylinder The rod is pivotally connected and the other end is pivotally coupled to the legs of the work machine; a locking member that locks the piston rod in at least one position that is fixed relative to the chassis. Further, the leg positioning support device further includes a guide rail disposed on the chassis, and the oil cylinder is slidably coupled to the guide rail. Further, a locking hole that cooperates with the locking member is disposed on the rail. Further, a locking hole is respectively provided at a position of the guide rail corresponding to the fully extended position of the cylinder and a fully contracted position. Further, the guide rail has a C-shaped cross section, and the opening of the C-shaped cross section is upward. Further, one or more struts are respectively disposed on both sides of the cylinder. Further, the cross section of the strut is rectangular, circular, circular, or variable in cross section. Further, the locking member is a pin. Further, when the leg is fully opened, the angle between the strut and the leg is 90° ± 15°. According to another aspect of the present invention, there is provided a construction machine comprising a leg and a leg positioning support device for positioning and supporting the leg, the leg positioning support device being the leg positioning support device described above. The invention swings, positions and supports the legs through the leg driving struts, so that the oil cylinder only plays the role of swinging, thereby reducing the cylinder size and reducing the cost. In addition, the present invention does not have the problem of over-positioning of the strut and the cylinder, and does not need to adjust the length of the strut, and has the characteristics of convenient operation and high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG. In the drawings: FIG. 1 is a schematic structural view showing a positioning support device of a leg of a first form in the prior art; FIG. 2 is a schematic view showing a second form of the prior art. Schematic diagram of the positioning support device of the leg; 3 is a schematic structural view showing a positioning support device of a leg of a third form in the prior art; FIG. 4 is a schematic structural view showing the positioning support device of the present invention in a running state; 5 is a schematic structural view showing the positioning support device of the present invention in an operating state; FIG. 6 is a schematic sectional view showing the first type of strut; FIG. 7 is a view schematically showing the second type of strut A cross-sectional view of Fig. 8 is schematically shown in Fig. 8; and Fig. 9 is a schematic cross-sectional view of the guide rail. Reference numerals in the figure: 10, chassis; 20, legs; 30, cylinder; 40, strut; 50, locking member; 60, guide rail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention are described in detail below with reference to the accompanying drawings. As a first aspect of the invention, a leg positioning support device for a construction machine is provided. As shown in FIG. 4 and FIG. 5, the leg positioning support device of the present invention comprises: a cylinder 30, the cylinder 30 is mounted on the chassis 10 of the construction machine; the strut 40, one end of the strut 40 and the piston rod of the cylinder 30 are pivotable The ground connection is connected, and the other end is pivotally connected to the leg 20 of the construction machine; the locking member 50, the locking member 50 locks the piston rod in at least one position opposite to the chassis 10. Preferably, the cylinder 30 is disposed in the direction of travel of the construction machine. In a preferred embodiment, one or more struts 40 are respectively disposed on two sides of the cylinder 30, so that one cylinder can be used to realize the positioning support of the two legs on both sides thereof, and the hydraulic center is correspondingly reduced. The required valves and corresponding electrical control equipment reduce costs and increase reliability. Preferably, the locking member 50 is a pin. Of course, the locking member 50 may be of other forms, such as a bolt or the like. In the running state, the leg positioning support device is gathered at the position shown in FIG. At this time, the cylinder 30 is in a fully extended state, the legs 20 on both sides are in a collapsed state, and the legs 20 are in a locked state under the action of the locking member 50 to prevent the legs from swinging during the running of the chassis. Referring to Figure 5, when the leg 20 needs to be swung out, the locking member 50 will be operated first to unlock the piston rod. Then, the cylinder 30 is contracted, and one end of the strut 40 is moved together to swing the leg 20 to the outside. Out. When the cylinder 30 is fully retracted into position, the legs 20 also move into position. At this time, the lock member 50 is operated to lock the piston rod. The support of the legs is completely dependent on the struts, so that the two functions of the oil cylinders from the swing and the support in the prior art become the function of only swinging, thereby reducing the cylinder size and further reducing the cost. In addition, compared with the prior art in which the struts are increased to withstand the slewing moment and the slewing inertia force, the present invention does not have the problem of over-positioning of the struts and the cylinders, and there is no need to adjust the length of the struts (prior art) The length of the struts needs to be adjusted, thus improving work efficiency. In a preferred embodiment, the leg positioning support device further includes a guide rail 60 disposed on the chassis 10, the cylinder 30 being slidably coupled to the rail 60. Preferably, the guide rail 60 is provided with a locking hole that cooperates with the locking member 50. Further, a locking hole is provided at a position of the guide rail 60 corresponding to the fully extended position of the cylinder 30 and the fully contracted position, respectively. Thus, when locking is required, it is only necessary to insert the locking member 50 into the locking hole on the guide rail 60 and the corresponding locking position on the piston rod. Since the length of the fully extended state of the piston rod and the fully contracted state are relatively fixed, it is easy to align the locking member 50 with the locking hole, so that the locking operation is no longer complicated. As shown in FIG. 5, when the leg 20 is fully opened, the angle between the strut 40 and the leg 20 is 90°±15°, thus changing the problem that the angle is generally less than 45° in the prior art, and the problem is improved. The bearing effect of the strut reduces the size of the strut (the strut is approximately positive pressure due to the inertial force and the turning moment, so the force component is small and the size is correspondingly reduced), which reduces the weight of the strut. As shown in Figures 6, 7, and 8, the cross-section of the struts 40 can be rectangular, circular (or rod-like in other cross-sections), annular (or tubular in other cross-section) or variable-section (e.g., at different locations). The cross sections are different) to suit different needs. As shown in Fig. 9, the guide rail 60 has a C-shaped cross section, and the opening of the C-shaped cross section is upward. Locking holes are provided at both ends of the guide rail 60. As a second aspect of the invention, a construction machine is provided. Referring to FIG. 4 and FIG. 5 again, the construction machine of the present invention comprises a leg and a leg positioning support device for positioning and supporting the leg, and the leg positioning support device is the leg positioning in the above embodiments. Support device. In particular, construction machinery is a crane. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
Claims
1. 一种工程机械的支腿定位支撑装置， 其特征在于， 包括： A leg positioning support device for a construction machine, comprising:
油缸 （30)， 所述油缸 （30) 安装在所述工程机械的底盘 （10) 上； 撑杆（40)， 所述撑杆（40) 的一端与所述油缸（30) 的活塞杆可枢转地连 接， 另一端与所述工程机械的支腿 （20) 可枢转地连接； a cylinder (30), the cylinder (30) is mounted on a chassis (10) of the construction machine; a strut (40), one end of the strut (40) and a piston rod of the cylinder (30) are Pivotly connected, the other end being pivotally connected to the legs (20) of the construction machine;
锁定件（50)， 所述锁定件（50)将所述活塞杆锁定在与所述底盘（10)相 对固定的至少一个位置上。 A locking member (50) that locks the piston rod in at least one position that is fixed relative to the chassis (10).
2. 根据权利要求 1所述的支腿定位支撑装置， 其特征在于， 所述支腿定位支撑装 置还包括设置在所述底盘（10)上的导轨（60)，所述油缸（30)与所述导轨（60) 滑动连接。 2. The leg positioning support device according to claim 1, wherein the leg positioning support device further comprises a guide rail (60) disposed on the chassis (10), the cylinder (30) and The guide rails (60) are slidably connected.
3. 根据权利要求 2所述的支腿定位支撑装置， 其特征在于， 所述导轨 （60) 上设 置有与所述锁定件 （50) 配合的锁定孔。 The leg positioning support device according to claim 2, wherein the guide rail (60) is provided with a locking hole that cooperates with the locking member (50).
4. 根据权利要求 3所述的支腿定位支撑装置， 其特征在于， 所述导轨 （60) 的对 应于所述油缸 （30) 的完全伸出的位置处和完全收缩的位置处分别设置有一个 所述锁定孔。 4. The leg positioning support device according to claim 3, wherein a position of the guide rail (60) corresponding to the fully extended position of the cylinder (30) and a fully retracted position are respectively provided One of the locking holes.
5. 根据权利要求 2所述的支腿定位支撑装置， 其特征在于， 所述导轨 （60) 具有 C形截面， 所述 C形截面的开口向上。 The leg positioning support device according to claim 2, wherein the guide rail (60) has a C-shaped cross section, and the C-shaped cross section opening is upward.
6. 根据权利要求 1-5中任一项所述的支腿定位支撑装置， 其特征在于， 所述油缸The leg positioning support device according to any one of claims 1 to 5, wherein the cylinder
(30) 的两侧分别设置有一个或多个所述的撑杆 （40)。 One or more of the above-mentioned struts (40) are respectively disposed on both sides of (30).
7. 根据权利要求 1-5中任一项所述的支腿定位支撑装置， 其特征在于， 所述撑杆The leg positioning support device according to any one of claims 1 to 5, wherein the strut
(40) 的截面是矩形、 圆形、 环形、 或变截面的。 The section of (40) is rectangular, circular, circular, or variable in cross section.
8. 根据权利要求 1-5中任一项所述的支腿定位支撑装置， 其特征在于， 所述锁定 件 （50) 是销轴。 The leg positioning support device according to any one of claims 1 to 5, wherein the locking member (50) is a pin.
9. 根据权利要求 1-5中任一项所述的支腿定位支撑装置， 其特征在于， 当所述支 腿 （20) 完全打开时， 所述撑杆 （40) 与所述支腿 （20) 的夹角为 90°±15°。 The leg positioning support device according to any one of claims 1 to 5, characterized in that, when the leg (20) is fully opened, the strut (40) and the leg ( 20) The angle is 90 ° ± 15 °.
0. 一种工程机械， 包括支腿和用于对所述支腿进行定位和支撑的支腿定位支撑装 置， 其特征在于， 所述支腿定位支撑装置是权利要求 1-9中任一项所述的支腿 0. A construction machine comprising a leg and a leg positioning support device for positioning and supporting the leg, wherein the leg positioning support device is any one of claims 1-9 Said leg
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210088839.6 | 2012-03-29 | ||
| CN201210088839.6A CN102602829B (en) | 2012-03-29 | 2012-03-29 | Engineering machinery and supporting leg positioning and supporting device thereof |
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| Publication Number | Publication Date |
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| WO2013143264A1 true WO2013143264A1 (en) | 2013-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2012/082037 WO2013143264A1 (en) | 2012-03-29 | 2012-09-26 | Engineering machinery and landing leg positioning and supporting device thereof |
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| Country | Link |
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| CN (1) | CN102602829B (en) |
| WO (1) | WO2013143264A1 (en) |
Cited By (1)
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| CN112754409A (en) * | 2021-01-13 | 2021-05-07 | 中南大学湘雅二医院 | Tissue retractor used in oral surgery |
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| CN102602829B (en) * | 2012-03-29 | 2014-02-19 | 中联重科股份有限公司 | Engineering machinery and supporting leg positioning and supporting device thereof |
| CN102849133B (en) * | 2012-09-27 | 2016-04-06 | 中联重科股份有限公司 | Hoisting equipment |
| CN104389851B (en) * | 2014-11-20 | 2017-04-26 | 徐州徐工施维英机械有限公司 | Hydraulic limiting device and concrete pump truck |
| CN107500122B (en) * | 2017-08-25 | 2019-09-10 | 郑州新大方重工科技有限公司 | A kind of folding crane |
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Also Published As
| Publication number | Publication date |
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| CN102602829B (en) | 2014-02-19 |
| CN102602829A (en) | 2012-07-25 |
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