阅读说明：本技术 一种车用支撑腿 (A kind of supporting leg for vehicles ) 是由 梁承锋 宁德逵 葛鹏 叶华 涂从喜 于 2019-08-08 设计创作，主要内容包括：本发明提供了一种车用支撑腿,包括支撑腿、转动构件、第一连杆、推动缸、第二连杆、固定架,固定架包括横梁和两侧支脚,横梁为空心方管,横梁的方管内壁设置有用于铰接的凸台,支脚的侧边设置有纵向通槽,支脚下端与转动构件一端铰接,转动构件另一端与支撑腿中部固定连接,转动构件中部与第一连杆一端铰接,第一连杆另一端与第二连杆一端铰接,第二连杆另一端与支脚上端铰接,第一连杆中部与推动缸一端铰接,推动缸另一端与凸台铰接。本发明提供了一种车用支撑腿,采用垂直展开方式,展开后形成连杆死点,主动件不直接承受侧翻力矩,结构简单,支撑稳定,支撑腿可收拢,收拢后占用空间小。(The present invention provides a kind of supporting leg for vehicles, including supporting leg, revolving member, first connecting rod, push cylinder, second connecting rod, fixed frame, fixed frame includes crossbeam and two sides stabilizer blade, crossbeam is hollow square tube, the square tube inner wall of crossbeam is provided with for hinged boss, the side of stabilizer blade is provided with longitudinal through slot, stabilizer blade lower end and revolving member one end are hinged, it is fixedly connected in the middle part of the revolving member other end and supporting leg, it is hinged with first connecting rod one end in the middle part of revolving member, the first connecting rod other end and second connecting rod one end are hinged, the second connecting rod other end and stabilizer blade upper end are hinged, it is hinged with promotion cylinder one end in the middle part of first connecting rod, push the cylinder other end and boss hinged.The present invention provides a kind of supporting leg for vehicles, using vertically deployable mode, connecting rod dead point are formed after expansion, driving link does not bear rollover torque directly, and structure is simple, supporting & stablizing, and supporting leg can collapse, and occupies little space after gathering.)

1. a kind of supporting leg for vehicles, it is characterised in that: including supporting leg (1), revolving member (2), first connecting rod (3), push cylinder (4), second connecting rod (5), fixed frame (6), the fixed frame (6) include crossbeam (61), and are located at the branch of crossbeam (61) two sides Foot (62), the crossbeam (61) are hollow square tube, and the square tube inner wall of crossbeam (61) is provided with for hinged boss (63), described The side of stabilizer blade (62) is provided with longitudinal through slot (64), and stabilizer blade (62) lower end and revolving member (2) one end are hinged, the rotation structure It is fixedly connected in the middle part of part (2) other end and supporting leg (1), the first hinge ear, the first hinge ear is provided in the middle part of the revolving member (2) Hinged with first connecting rod (3) one end, first connecting rod (3) other end and second connecting rod (5) one end are hinged, the second connecting rod (5) other end and stabilizer blade (62) upper end are hinged, and the second hinge ear, the second hinge ear and promotion are provided in the middle part of the first connecting rod (3) Cylinder (4) one end is hinged, and promotion cylinder (4) other end and boss (63) are hinged.

2. a kind of supporting leg for vehicles as described in claim 1, it is characterised in that: the supporting leg (1) is internally provided with hydraulic Oil cylinder or mechanical screw cylinder.

3. a kind of supporting leg for vehicles as described in claim 1, it is characterised in that: the promotion cylinder (4) is hydraulic cylinder or machine Tool formula screw rod cylinder.

Technical field

The invention belongs to engineering truck fields, are specifically related to a kind of supporting leg for vehicles.

Background technique

Many vehicle-mounted engineering equipments at work, can generate biggish rollover torque, the moment of resistance of confrontation rollover torque with The width of vehicle body is directly proportional, and vehicle width need to meet standard GB/T 1589-2004 " road vehicle contour dimension, axle load and Quality limit value ", body width has maximum value, it is meant that the moment of resistance is limited, when the moment of resistance can not fight rollover torque, needs to design Special support leg increases body width to increase the moment of resistance, and then guarantees that vehicle body is stablized.

There is telescopic and horizontal rotation type in existing support leg mechanism.Telescopic leg due between telescoping member not Avoidablely there are gap, amplification effect can be generated to gap again in component ends supporting point, be not able to satisfy stability requirement compared with High support；Horizontal rotation type needs to reserve enough spaces rotating horizontally in spatial dimension, at the same mechanism design link compared with More, structure is more complex.

Summary of the invention

In order to solve the above technical problems, the present invention provides a kind of supporting leg for vehicles, using vertically deployable mode, after expansion Connecting rod dead point is formed, driving link does not bear rollover torque directly, and structure is simple, supporting & stablizing, and supporting leg can collapse, and accounts for after gathering It is small with space.

The present invention is achieved by the following technical programs.

A kind of supporting leg for vehicles, including supporting leg, revolving member, first connecting rod, promotion cylinder, second connecting rod, fixed frame, institute Stating fixed frame includes crossbeam, and the stabilizer blade positioned at crossbeam two sides, and the crossbeam is hollow square tube, and the square tube inner wall of crossbeam is arranged Have for hinged boss, the side of the stabilizer blade is provided with longitudinal through slot, and stabilizer blade lower end and revolving member one end are hinged, described Be fixedly connected in the middle part of the revolving member other end and supporting leg, be provided with the first hinge ear in the middle part of the revolving member, the first hinge ear with First connecting rod one end is hinged, and the first connecting rod other end and second connecting rod one end are hinged, the second connecting rod other end and branch Foot upper end is hinged, the second hinge ear is provided in the middle part of the first connecting rod, the second hinge ear and promotion cylinder one end are hinged, the promotion cylinder The other end is hinged with boss.

The supporting leg is internally provided with hydraulic cylinder or mechanical screw cylinder, can stretch, and saves space.

The promotion cylinder is hydraulic cylinder or mechanical screw cylinder, convenient for the expansion of control supporting leg or is collapsed.

When being unfolded under working condition, cylinder elongation is pushed to push first connecting rod rotation, first connecting rod drives revolving member and the Two connecting rods rotate together, push cylinder in place when, first connecting rod and second connecting rod are in a straight line, under this state, first connect The two sides stabilizer blade and revolving member of bar and second connecting rod and fixed frame form stable triangular structure, form connecting rod dead point, A small amount of cross component force caused by pushing cylinder to be subjected only to because of part tolerance, supporting & stablizing.The hydraulic oil that supporting leg passes through internal setting Cylinder or mechanical screw cylinder are extended, and with ground face contact, are formed and are stablized support.

When packing up under off position, revolving member, first connecting rod, second connecting rod are accommodated in the through slot of fixed frame, are pushed away Dynamic cylinder is accommodated in the square tube of the crossbeam of fixing bracket body, supporting leg by the hydraulic cylinder of internal setting or mechanical screw cylinder into Row is shunk, and guarantees that body width meets national standard.

The beneficial effects of the present invention are:

Compared with prior art, a kind of supporting leg for vehicles provided by the invention, structure is simple, and driving link is to push cylinder, pushes away Dynamic cylinder and supporting leg are all made of hydraulic cylinder or mechanical screw cylinder, it is easy to accomplish automation control；By pushing the flexible of cylinder Connecting rod mechanism movement is driven, so that realizing that rotating member reaches needs position；When not working, supporting leg is accommodated in fixed frame longitudinal direction In through slot, occupy little space；When work, supporting leg is in dead point state after expanding in place, and can optimize significantly push cylinder in this way Force environment improves the reliability of complete equipment, improves the stabilization of support effect to reduce the design difficulty for pushing cylinder Property.

Detailed description of the invention

Structural schematic diagram when Fig. 1 is present invention expansion；

Fig. 2 is the top view of Fig. 1；

Fig. 3 is the structural schematic diagram when present invention collapses；

Structural schematic diagram when Fig. 4 is a kind of case study on implementation expansion of the invention；

Fig. 5 is structural schematic diagram when a kind of case study on implementation of the invention collapses.

In figure: 1- supporting leg, 2- revolving member, 3- first connecting rod, 4- push cylinder, 5- second connecting rod, 6- fixed frame, 61- Crossbeam, 62- stabilizer blade, 63- boss, 64- through slot.

Specific embodiment

Be described further below technical solution of the present invention, but claimed range be not limited to it is described.

As shown in Figures 1 to 5, a kind of supporting leg for vehicles, including supporting leg 1, revolving member 2, first connecting rod 3, promotion cylinder 4, second connecting rod 5, fixed frame 6, the fixed frame 6 include crossbeam 61, and the stabilizer blade 62 positioned at 61 two sides of crossbeam, the crossbeam 61 be hollow square tube, and the square tube inner wall of crossbeam 61 is provided with for hinged boss 63, and the side of the stabilizer blade 62 is provided with vertical To through slot 64,62 lower end of stabilizer blade and 2 one end of revolving member are hinged, fixed in the middle part of 2 other end of revolving member and supporting leg 1 to connect It connects, the first hinge ear is provided in the middle part of the revolving member 2, the first hinge ear and 3 one end of first connecting rod are hinged, the first connecting rod 3 The other end and 5 one end of second connecting rod are hinged, and 5 other end of second connecting rod and 62 upper end of stabilizer blade are hinged, in the first connecting rod 3 Portion is provided with the second hinge ear, and the second hinge ear and promotion 4 one end of cylinder are hinged, and 4 other end of promotion cylinder and boss 63 are hinged.

As shown in Figures 1 to 5, the supporting leg 1 is internally provided with hydraulic cylinder or mechanical screw cylinder, can be stretched Space is saved in contracting.

As shown in Figures 1 to 5, the promotion cylinder 4 is hydraulic cylinder or mechanical screw cylinder, is opened up convenient for control supporting leg 1 It opens or collapses.

As shown in Figure 1 and Figure 2, when being unfolded under working condition, push the elongation of cylinder 4 that first connecting rod 3 is pushed to rotate, first connecting rod 3 Drive revolving member 2 and second connecting rod 5 to rotate together, push cylinder 4 in place when, first connecting rod 3 and second connecting rod 5 be in one it is straight On line, stable triangular structure is formed with the two sides stabilizer blade 62 and revolving member 2 of fixed frame 6, forms connecting rod dead point, is pushed Cylinder 4 a small amount of cross component force, supporting & stablizing caused by being subjected only to because of part tolerance.The hydraulic cylinder that supporting leg 1 passes through internal setting Or mechanical screw cylinder is extended, and with ground face contact, is formed and is stablized support.

As shown in figure 3, revolving member 2, first connecting rod 3, second connecting rod 5 are accommodated in fixation when packing up under off position In the through slot 64 of frame 6, cylinder 4 is pushed to be accommodated in the square tube of crossbeam 61 of fixed frame 6, supporting leg 1 is hydraulic by internal setting Oil cylinder or mechanical screw cylinder are shunk, and guarantee that body width meets national standard.

A kind of specific implementation case of the invention as shown in Figure 4, Figure 5 is provided with after engineering truck headstock with the tailstock Supporting leg for vehicles provided by the present invention after expansion, is provided which to stablize support in the headstock tailstock, convenient for construction operation；After gathering, It occupies little space, body width meets national standard.

A kind of supporting leg for vehicles provided by the invention, structure is simple, and driving link is to push cylinder, and cylinder and supporting leg is pushed to use Hydraulic cylinder or mechanical screw cylinder, it is easy to accomplish automation control；By pushing the flexible drive connecting rod mechanism movement of cylinder, from And it realizes that rotating member reaches and needs position；When not working, supporting leg is accommodated in the through slot of fixed frame longitudinal direction, is occupied little space； When work, supporting leg is in dead point state after expanding in place, and can optimize the force environment for pushing cylinder significantly in this way, pushes away to reduce The design difficulty of dynamic cylinder, improves the reliability of complete equipment, improves the stability of support effect.