CN217435687U

CN217435687U - Folding supporting leg

Info

Publication number: CN217435687U
Application number: CN202220631302.9U
Authority: CN
Inventors: 邱洪伟; 孙筑华
Original assignee: Heisi Intelligent Equipment Weihai Co ltd
Current assignee: Heisi Intelligent Equipment Weihai Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-09-16
Anticipated expiration: 2032-03-23

Abstract

The utility model provides a folding landing leg, it is complicated that it has solved current vehicle landing leg structure, the technical problem that the reliability is low, including mount pad, push rod, sleeve, elastic component, support piece, landing leg backing plate. Wherein, the fixed end of the push rod is hinged with the mounting seat and sleeved with a sleeve. One end of the supporting piece is hinged with the sleeve, the other end of the supporting piece is hinged with the mounting seat, and an elastic piece is arranged between the sleeve and the push rod. The movable end of the push rod is provided with a supporting leg base plate, and a limiting structure is arranged between the mounting seat and the push rod. In terms of size, it is necessary to ensure that the lower edge of the sleeve in the vertical direction is lower than the lower edge of the fixed end of the push rod in the unfolded state. The utility model discloses a linkage structure that push rod, sleeve, elastic component and support piece formed makes the one-way concertina movement of push rod can accomplish to expand the extension or fold and return and contract, has accomplished automatic demand when guaranteeing simple structure, possesses good stability and maintenance, maintenance convenience, but wide application in vehicle engineering technical field.

Description

Folding supporting leg

Technical Field

The utility model relates to a vehicle engineering technical field, in particular to folding landing leg.

Background

The supporting legs are used as common structural units in various special vehicles, and need to lift or support the vehicle body when in use. For engineering vehicles, the supporting legs are generally large in design size, and mainly need to have corresponding large-tonnage supporting capacity and also need transverse stretching and deformation capacity, so that the problems of attractiveness, wind resistance, long-distance driving safety, space occupation and the like are not needed to be considered due to the adoption of an externally-hung design. To car as a house, its outfit landing leg will promote parking stability and maintenance convenience greatly, so car as a house on few the world all is furnished with the landing leg, but combines pleasing to the eye, windage, safe scheduling problem of traveling, generally does not suggest to carry out outer hanging design with the car as a house landing leg.

For example, chinese patent CN203920547U discloses a full-automatic side car body large space retractable floor hidden leg inward-folding self-locking caravan, which designs a retractable foundation frame system to lift the whole caravan, bears each functional unit, and is provided with a retractable lifting unit, a floor triple-folding mechanism, a leg automatic inward-folding self-locking unit, and a caravan plate assembly. The upper floor is fixed, the left lifting floor and the right lifting floor are sequentially overlapped under the upper floor, the lifting floors are pulled out and retracted during stretching, the effective area is enlarged to the maximum extent, four supporting leg units are respectively arranged at two ends of a basic frame, supporting leg oil cylinders are arranged on supporting leg cross rods, oil cylinder rotating shafts are pulled by connecting rods to enable the supporting leg oil cylinders to be perpendicular to the cross rods, and supporting leg oil cylinder plungers are discharged from the cylinders, so that the purpose of supporting a caravan is achieved. Above-mentioned technical scheme has realized better space utilization to hidden design has been carried out the car as a house landing leg, has solved above-mentioned technical problem to a certain extent, but combines its technical scheme to know, and this type automated design overall structure is comparatively complicated, influences follow-up life and the convenience of maintaining, maintaining.

SUMMERY OF THE UTILITY MODEL

The utility model discloses just for solve above-mentioned background art not enough, provide a full-automatic, simple structure's folding landing leg.

Therefore, the utility model provides a folding supporting leg, which mainly comprises a mounting seat, a push rod, a sleeve, an elastic part, a supporting part and a supporting leg base plate;

the mounting seat is mounted on the vehicle body; the fixed end of the push rod is hinged with the mounting seat to form a first hinge; the sleeve is sleeved on the push rod; one end of the supporting piece is hinged with the sleeve, the other end of the supporting piece is hinged with the mounting seat, and a second hinge joint is formed; the first hinge joint and the second hinge joint are not on the same vertical line of the horizontal plane;

the elastic piece is arranged between the sleeve and the fixed end of the push rod;

the movable end of the push rod is provided with the supporting leg base plate;

a limiting structure is arranged between the mounting seat and the push rod;

in the unfolded state, the position of the lower edge of the sleeve in the vertical direction is lower than the lower edge of the fixed end of the push rod.

Preferably, the push rod is one of an electric push rod, a hydraulic push rod and a pneumatic push rod.

Preferably, the mounting seat is integrally of a U-shaped structure, the bottom surface of the mounting seat is fixedly connected with the vehicle body, and the two convex edges are arranged downwards and are respectively hinged with the fixed end of the push rod.

Preferably, the supporting parts are two symmetrically arranged connecting rods which are respectively positioned at two sides of the push rod; one end of the connecting rod is hinged to the convex edge, and the other end of the connecting rod is hinged to the outer side face of the sleeve.

Preferably, the elastic part is a spring, one end of the elastic part is connected with the fixed end of the push rod, and the other end of the elastic part is connected with the upper end face of the sleeve.

Preferably, the supporting leg base plate main body is of a flat plate structure, a shaft support is arranged on the upper surface of the supporting leg base plate main body, and the shaft hole is of a long round hole structure.

Preferably, the upper surface of the landing leg backing plate is also provided with an elastic cushion block.

Preferably, the movable end of the push rod is provided with a shaft sleeve, two rotating shafts are symmetrically arranged on the peripheral side face of the shaft sleeve, and the rotating shafts are inserted into the long round hole structure.

Preferably, a limiting structure is arranged between the mounting seat and the fixed end of the push rod.

Preferably, the limiting structure comprises a limiting pin and a boss; the limiting pin is arranged on the mounting seat; the boss is arranged at the fixed end of the push rod.

The utility model discloses there is following beneficial effect:

the utility model discloses a linkage structure that push rod, sleeve, elastic component and support piece formed makes push rod one-way motion can accomplish to expand the extension or fold and contract back, has accomplished automatic demand when guaranteeing simple structure, possesses good stability and maintenance, maintenance convenience.

Drawings

FIG. 1 is a rear perspective view of an embodiment of the present invention;

FIG. 2 is a front perspective view of an embodiment of the present invention;

fig. 3 is an enlarged schematic view of the installation position of the limit pin in the embodiment of the present invention;

the labels in the figure are: 1. the device comprises a motor, 2 parts of a supporting part, 3 parts of an elastic part, 4 parts of a sleeve, 5 parts of a push rod, 6 parts of a support leg base plate and 7 parts of a limiting pin.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments to assist understanding of the invention. The method used in the utility model is a conventional method if no special regulation is provided; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.

The embodiment provides a folding leg, as shown in fig. 1 and 2, mainly comprising a mounting seat, a push rod 5, a sleeve 4, an elastic member 3, a support member 2 and a leg backing plate 6.

Wherein, the mounting seat is arranged on the vehicle body; preferably, the mounting seat is integrally of a U-shaped structure, the bottom surface of the mounting seat is fixedly connected with a girder of the vehicle body through two U-shaped connecting sheets and bolts, and convex edges on two sides of the mounting seat are arranged downwards and are respectively hinged with the fixed end of the push rod 5.

Preferably, push rod 5 can be one of them for electric putter, hydraulic push rod, pneumatic push rod, selects electric putter in this embodiment, can save the space of other equipment like this, and motor 1 then is the syntropy design with the pars contractilis of push rod 5, reduces axial dimension, and the reduction gear switching is passed through to the centre, and inside screw rod transmission through, can possess the ability of auto-lock when realizing the increase moment of torsion, guarantees the security that push rod 5 used.

The fixed end of the push rod 5 is hinged with the mounting seat to form a first hinge. The push rod 5 is further sleeved with a sleeve 4, specifically, the telescopic part of the push rod 5 is a cylindrical piston rod, and the fixed part is sleeved with the sleeve 4 and can slide relatively. One end of the support member 2 is hinged with the sleeve, and the other end is hinged with the mounting seat to form a second hinge; preferably, the support member 2 is two symmetrically arranged connecting rods, which are respectively located at two sides of the push rod 5, and one end of the connecting rod is hinged with the convex edge of the mounting seat, and the other end is hinged with the surface of the outer side surface of the sleeve.

In order to ensure that the linkage effect is realized in the telescopic process, an offset design is required, namely the first hinge joint and the second hinge joint are not on the same vertical line of the horizontal plane, so that after the telescopic frame is completely unfolded, as shown by a black line frame in fig. 2, a triangular structure formed by the push rod 5, the support member 2 and the mounting seat is formed.

Correspondingly, in order to realize the linkage effect, an elastic part 3 is also required to be arranged between the fixed ends of the sleeve 4 and the push rod 5; preferably, the elastic member 3 is a spring, one end of which abuts against the fixed end (reducer) of the push rod 5, and the other end of which abuts against the upper end face of the sleeve 4, wherein, in order to relatively stabilize the position of the spring, a ring of flange is processed on the upper end face of the sleeve 4 for supporting the end face of the spring.

A supporting leg base plate 6 is arranged at the movable end of the push rod 5; preferably, the main body of the supporting leg base plate 6 is of a flat plate structure, a shaft support is arranged on the upper surface of the supporting leg base plate, and the shaft hole is of a long round hole structure. Further, as shown in the figure, a shaft sleeve is installed at the movable end of the push rod 5, two rotating shafts are symmetrically arranged on the peripheral side of the shaft sleeve, and the rotating shafts are inserted into the long round hole structure, so that the rotating shafts can have a certain movement allowance. As shown in fig. 1, in order to ensure that the landing leg base plate 6 can be correctly returned after being lowered, an inverted trapezoidal structure is further arranged at the bottom of the shaft sleeve. Like this, after the landing leg is folding to the inboard, landing leg backing plate 6 receives the influence of gravity, can pass through slotted hole structure lateral shifting, and then behind 5 horizontality of push rod, self also rotates into the state that is close the horizontality, can shelter from axle sleeve part and sleeve 4 tip, avoids the stone debris that the road surface jumped up in high-speed driving to bump. Furthermore, in order to prevent the leg pad 6 from colliding against the sleeve 4 due to the jolt, it is designed to mount an elastic pad on the upper surface of the leg pad 6, as shown in fig. 2, for buffering the impact due to the jolt.

In order to prevent the push rod 5 from continuing to perform the turning motion after being unfolded to the folded state, a limiting structure is arranged between the mounting seat and the fixed end of the push rod 5; preferably, as shown in fig. 3, the limit structure comprises a limit pin 7 and a boss. The limit pin 7 is arranged on the mounting seat and downwards penetrates through the mounting hole, and the boss is arranged on the fixed end of the push rod 5, so that after the push rod 5 is turned to a vertical position, the boss touches the limit pin 7 to stop turning continuously.

In terms of design size, it is necessary to ensure that the lower edge of the sleeve 4 is positioned lower than the lower edge of the fixed end of the push rod 5 in the vertical direction in the unfolded state.

Working process

In the unfolding process of the electric supporting leg, the motor 1 drives the telescopic part of the push rod 5 to stretch out, and at the moment, because the spring 3 is in a compressed state, thrust can be applied to the sleeve 4, so that the distance between the first hinge joint and the sleeve 4 is prolonged, and further, because a distance exists between the second hinge joint and the first hinge joint of the supporting piece 2, the push rod 5 integrally carries out overturning motion (which can be simply understood as the fixed length of two sides of a triangle, one side of the fixed length side is fixed, and the movable side increases the length) under the limitation of the supporting piece 2, and is transferred to a vertical state from a horizontal state; when the angle perpendicular to the ground is reached, the push rod 5 does not rotate under the action of the limit screw, at the moment, the sleeve 4 does not slide along the push rod 5 continuously due to position limitation, and the movable end of the push rod 5 is gradually exposed out of the lower edge of the sleeve 4 under the continuous driving of the motor 1 until the supporting leg base plate 6 is contacted with the ground, so that the supporting effect is achieved. The fully deployed configuration is shown in figures 1 and 2.

When the folding bicycle is recovered, the action is opposite to the action, firstly, the motor 1 drives the piston rod to retract, the shaft sleeve firstly abuts against the lower edge of the sleeve 4, then the sleeve 4 is driven to compress the spring 3, the distance between the first hinge joint and the sleeve 4 is shortened, and the push rod 5 is forced to turn inwards from the vertical state to the horizontal state under the limitation of the supporting piece 2.

The operation mode of a single electric supporting leg is explained, in the actual use of the trailer, a scheme of combined action of four groups of electric supporting legs is generally adopted, the four groups of electric supporting legs are adjusted through a set of complete control system, and the horizontal error of the trailer after adjustment reaches 0.2 degrees by using the horizontal sensor.

In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

However, the above description is only an embodiment of the present invention, and the scope of the present invention should not be limited thereto, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims

1. A folding leg is characterized by comprising a mounting seat, a push rod, a sleeve, an elastic piece, a supporting piece and a leg base plate;

the movable end of the push rod is provided with the supporting leg base plate;

a limiting structure is arranged between the mounting seat and the push rod;

2. The folding leg of claim 1 wherein said push rod is one of an electric push rod, a hydraulic push rod, and a pneumatic push rod.

3. The foldable leg as claimed in claim 1, wherein the mounting seat is a U-shaped structure, the bottom surface is fixedly connected to the vehicle body, and the two flanges are downwardly disposed and hinged to the fixed end of the push rod respectively.

4. A folding leg as claimed in claim 3, wherein said support member is two symmetrically disposed links, one on each side of said push rod; one end of the connecting rod is hinged to the convex edge, and the other end of the connecting rod is hinged to the outer side face of the sleeve.

5. A foldable leg as claimed in claim 1, wherein said resilient member is a spring having one end connected to said fixed end of said push rod and the other end connected to the upper end surface of said sleeve.

6. The folding leg as claimed in claim 1, wherein the leg rest main body is a flat plate structure, the upper surface is provided with a shaft support, and the shaft hole is a slotted hole structure.

7. A folding leg as claimed in claim 6, wherein said leg rest is further provided with a resilient pad on the upper surface thereof.

8. A folding leg as claimed in claim 6 or 7, wherein a shaft sleeve is mounted at the movable end of the push rod, two rotating shafts are symmetrically arranged on the peripheral side of the shaft sleeve, and the rotating shafts are inserted into the oblong hole structure.

9. The folding leg as claimed in claim 1, wherein a limiting structure is provided between the mounting seat and the fixed end of the push rod.

10. The folding leg of claim 9 wherein said stop structure comprises a stop pin and a boss; the limiting pin is arranged on the mounting seat; the boss is arranged at the fixed end of the push rod.