阅读说明：本技术 一种工程车辆及其辅助支撑腿 (Engineering vehicle and auxiliary supporting leg thereof ) 是由 肖求辉 于传强 姚晓光 邹立叶 曾昆雷 胡彩凤 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种工程车辆及其辅助支撑腿,辅助支撑腿包括支撑杆、耳座和垂直设于所述支撑杆第一端的升降支腿组件；所述支撑杆的第二端固接旋转销,所述耳座均设有销孔和定位孔,所述支撑杆和所述耳座通过所述销孔和旋转销转动连接；还包括固接于所述旋转销且用以沿所述定位孔轴向升降定位所述支撑杆和所述耳座的定位组件。本发明所提供的辅助支撑腿安装及撑收方便,有助于提高工程车辆的支撑稳定性和便利性。(The invention discloses an engineering vehicle and an auxiliary supporting leg thereof, wherein the auxiliary supporting leg comprises a supporting rod, an ear seat and a lifting supporting leg assembly vertically arranged at a first end of the supporting rod; the second end of the supporting rod is fixedly connected with a rotating pin, the lug seats are provided with pin holes and positioning holes, and the supporting rod and the lug seats are rotationally connected through the pin holes and the rotating pin; still include the rigid coupling in rotatory round pin just is used for following the locating hole axial goes up and down to position the bracing piece with the locating component of ear seat. The auxiliary supporting leg provided by the invention is convenient to install, support and retract, and is beneficial to improving the supporting stability and convenience of the engineering vehicle.)

1. An auxiliary supporting leg is characterized by comprising a supporting rod, an ear seat and a lifting supporting leg assembly vertically arranged at a first end of the supporting rod; the second end of the supporting rod is fixedly connected with a rotating pin, the lug seats are provided with pin holes and positioning holes, and the supporting rod and the lug seats are rotationally connected through the pin holes and the rotating pin; still include the rigid coupling in rotatory round pin just is used for following the locating hole axial goes up and down to position the bracing piece with the locating component of ear seat.

2. The auxiliary support leg according to claim 1, wherein the positioning assembly comprises a positioning plate, a positioning sleeve integrated with the positioning plate, and a positioning pin arranged in the positioning sleeve; the bottom of the positioning pin is provided with a first convex shoulder, the positioning pin further comprises an elastic piece sleeved on the positioning pin, two ends of the elastic piece are respectively abutted to the first convex shoulder and the positioning sleeve, a through hole is formed in the top end of the positioning sleeve, and the top of the positioning pin is provided with a limiting part penetrating through the through hole and a lifting assembly.

3. The auxiliary support leg as claimed in claim 2, wherein the limiting part comprises a limiting boss arranged at the top end of the positioning pin and a limiting nut in threaded fit with the limiting boss.

4. The auxiliary support leg according to claim 2, wherein the middle portion of the positioning pin is provided with a second shoulder having a diameter larger than that of the through hole.

5. The auxiliary support leg as claimed in any one of claims 2 to 4, wherein the top end of the positioning pin is provided with a mounting screw hole along the axial direction, and the lifting assembly comprises a looped bolt matched with the mounting screw hole.

6. The auxiliary support leg according to any one of claims 2 to 4, wherein a flat square head is arranged at the top of the rotating pin, and the positioning plate is provided with a flat square hole matched with the flat square head.

7. The auxiliary support leg as claimed in claim 6, wherein the top end of the rotation pin is provided with a fastening screw hole along the axial direction, and the positioning plate is fixed to the rotation pin by a fastening bolt and the fastening screw hole.

8. The auxiliary support leg as claimed in claim 1, wherein the lifting leg assembly comprises an internally threaded sleeve vertically disposed at the first end of the support rod, a leg body engaged with the internally threaded sleeve, a support seat disposed at the bottom of the leg body, and a rotating rod vertically disposed at the top of the leg body.

9. A working vehicle, characterized in that it comprises an auxiliary support leg according to any one of claims 1-8.

10. The work vehicle of claim 9, wherein the work vehicle is an omni-directional mobile aerial work platform equipped with mecanum wheels.

Technical Field

The invention relates to the technical field of engineering machinery, in particular to an auxiliary supporting leg. The invention also relates to an engineering vehicle with the auxiliary supporting leg.

Background

In the process of using some special vehicles, the special vehicles can normally run on a relatively horizontal basis, and in order to improve the stability of the vehicles, supporting legs are usually installed on the vehicles and used for leveling the vehicles. Meanwhile, the supporting legs are used for supporting the ground, so that most of vehicle weight is borne, the loads of the steel plate spring and the tire of the chassis are reduced, and the service lives of the steel plate spring and the tire are prolonged. The supporting leg of installation usually is the hydraulic pressure supporting leg on the vehicle at present, and the hydraulic pressure supporting leg is arranged in the outside of vehicle, not only occupies a large amount of spaces, receive and releases moreover and opens and realize that the location supports very inconveniently.

How to improve the convenience of supporting leg support becomes a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide an auxiliary supporting leg which can improve the convenience of engineering vehicle support. Another object of the invention is to provide a working vehicle comprising the auxiliary support leg.

In order to achieve the purpose, the invention provides an auxiliary supporting leg, which comprises a supporting rod, an ear seat and a lifting supporting leg assembly, wherein the lifting supporting leg assembly is vertically arranged at the first end of the supporting rod; the second end of the supporting rod is fixedly connected with a rotating pin, the lug seats are provided with pin holes and positioning holes, and the supporting rod and the lug seats are rotationally connected through the pin holes and the rotating pin; still include the rigid coupling in rotatory round pin just is used for following the locating hole axial goes up and down to position the bracing piece with the locating component of ear seat.

Optionally, the positioning assembly includes a positioning plate, a positioning sleeve integrally disposed with the positioning plate, and a positioning pin disposed in the positioning sleeve; the bottom of the positioning pin is provided with a first convex shoulder, the positioning pin further comprises an elastic piece sleeved on the positioning pin, two ends of the elastic piece are respectively abutted to the first convex shoulder and the positioning sleeve, a through hole is formed in the top end of the positioning sleeve, and the top of the positioning pin is provided with a limiting part penetrating through the through hole and a lifting assembly.

Optionally, the limiting part comprises a limiting boss arranged at the top end of the positioning pin and a limiting nut in threaded fit with the limiting boss.

Optionally, a second shoulder is arranged in the middle of the positioning pin, and the diameter of the second shoulder is larger than that of the through hole.

Optionally, the top end of the positioning pin is provided with an installation screw hole along the axial direction, and the lifting assembly comprises a bolt with a ring, which is matched with the installation screw hole.

Optionally, a flat square head is arranged at the top of the rotating pin, and a flat square hole matched with the flat square head is formed in the positioning plate.

Optionally, a fastening screw hole is axially formed in the top end of the rotating pin, and the positioning plate is tightly pressed and fixed to the rotating pin through the fastening bolt and the fastening screw hole.

Optionally, the lifting leg assembly comprises an internal thread sleeve vertically arranged at the first end of the support rod, a leg body matched with the internal thread sleeve, a support seat arranged at the bottom of the leg body, and a rotary rod vertically arranged at the top of the leg body.

The invention further provides an engineering vehicle which comprises the auxiliary support leg.

Optionally, the work vehicle is an omni-directional mobile aerial work platform equipped with mecanum wheels.

Compared with the prior art, the auxiliary supporting leg provided by the invention is fixed on the engineering vehicle only through the ear seat, the positioning component is pulled to be separated from the positioning hole, the relative locking of the supporting rod and the ear seat is removed, the supporting rod and the positioning pin synchronously rotate around the ear seat, the supporting rod is adjusted to a proper position, the supporting rod and the ear seat are locked again by utilizing the matching of the positioning component and the positioning hole, then the lifting supporting leg component is adjusted to a proper supporting height, the rotation and the opening are stable and convenient, and the stability and the convenience of supporting the engineering vehicle are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a retracted state of an auxiliary support leg provided by an embodiment of the invention;

FIG. 2 is a schematic view of an expanded state of an auxiliary support leg provided by an embodiment of the invention;

FIG. 3 is a cross-sectional view of an auxiliary support leg provided by an embodiment of the present invention;

FIG. 4 is a schematic view of the ear mount of FIG. 3;

FIG. 5 is a schematic view of the positioning plate of FIG. 3;

FIG. 6 is a schematic view of the locating pin of FIG. 3;

fig. 7 is a schematic view of the rotating pin of fig. 3.

Wherein:

1-chassis, 2-fastening bolt, 3-ear seat, 4-support rod, 5-support leg body, 6-rotating rod, 7-support seat, 8-positioning plate, 9-positioning sleeve, 10-positioning pin, 11-elastic piece, 12-bolt with ring, 13-limit nut, 14-locking nut, 15-rotating pin, 16-pressing plate and 81-flat square hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 7, fig. 1 is a schematic view illustrating a retracted state of an auxiliary support leg according to an embodiment of the present invention, fig. 2 is a schematic view illustrating an extended state of the auxiliary support leg according to the embodiment of the present invention, fig. 3 is a cross-sectional view of the auxiliary support leg according to the embodiment of the present invention, fig. 4 is a schematic view illustrating an ear seat in fig. 3, fig. 5 is a schematic view illustrating a positioning plate in fig. 3, fig. 6 is a schematic view illustrating a positioning pin in fig. 3, and fig. 7 is a schematic view illustrating a rotation pin in fig. 3.

The auxiliary supporting leg provided by the invention comprises a lifting supporting leg assembly, an ear seat 3 and a supporting rod 4, wherein the ear seat 3 is fixedly arranged on a chassis 1 of a vehicle, the lifting supporting leg assembly is vertically arranged at the first end of the supporting rod 4 far away from the ear seat 3, and the supporting height is adjusted by adjusting the height of the lifting supporting leg assembly; the second end of the support rod 4 is fixedly connected with a rotating pin 15, and the rotating pin 15 is rotatably connected with the lug seat 3, so that the rotating pin 15 and the support rod 4 synchronously rotate; rotatory round pin 15 fixed connection locating component, ear seat 3 then sets up the locating hole, utilizes the component that can follow the locating hole elevating movement location among the locating component to fix a position ear seat 3 and bracing piece 4 rotatory round pin 15, and the rotation of restriction rotatory round pin 15, and then the rotation of restriction bracing piece 4 and lift landing leg subassembly.

The auxiliary support leg provided by the invention is described in more detail with reference to the accompanying drawings and specific embodiments.

In one embodiment of the present invention, the connection between the support rod 4 and the ear mount 3 can be realized by referring to fig. 3, 4 and 7, in order to realize the synchronous rotation of the support rod 4 and the rotation pin 15. The two sides of the middle upper part of the rotating pin 15 are cut to form a flat square structure, and the flat square structure is matched with a corresponding flat square hole arranged on the supporting rod 4, so that the supporting rod 4 and the rotating pin 15 are fixedly connected and circumferentially limited. The bottom of swivel pin 15 sets up spacing convex shoulder, and the top sets up the rotating part, realizes the rotation of relative ear seat 3 pinhole with the help of the rotating part on swivel pin 15 and its top, also realizes that the rotation of bracing piece 4 is opened or is withdrawed, borrows the locating hole location realization of locating component and ear seat 3 simultaneously and opens the state or withdraws the fixed of state.

Referring to fig. 5 and fig. 6, the positioning assembly includes a positioning plate 8, a positioning sleeve 9, and a positioning pin 10 and an elastic member 11 disposed in the positioning sleeve 9, wherein the positioning plate 8 and the positioning sleeve 9 are integrally formed. In order to realize the synchronous rotation of the positioning assembly and the rotating pin 15, the positioning assembly is utilized to position the positioning pin 10, namely the supporting rod 4, similarly, two sides of the rotating part at the top end of the rotating pin 15 are also cut to form a flat square head, the positioning plate 8 is provided with a flat square hole 81 matched with the flat square head, and the positioning assembly and the rotating pin 15, namely the supporting rod 4, are synchronously rotated by means of the flat square hole 81.

The top of the rotating pin 15 is provided with a fastening screw hole along the axial direction, and the rotating pin 15 is fixed on the lug seat 3 by means of the matching of the fastening bolt 2 and the fastening screw hole after penetrating the hole position of the support rod 4 and the pin hole of the rotating pin 15 from bottom to top. Furthermore, a pressure plate 16 can be arranged above the positioning plate 8 as required, and the fastening bolt 2 is fixed on a fastening screw hole of the rotating pin 15 after penetrating through the pressure plate 16, so that the rotating pin 15 is prevented from falling off.

The positioning principle of the positioning assembly is as follows, the opening of the positioning sleeve 9 is arranged downwards, the bottom end of the positioning pin 10 is provided with a first convex shoulder, a boss is arranged below the first convex shoulder, the elastic part 11 is sleeved on the periphery of the positioning pin 10, and two ends of the elastic part 11 are respectively abutted to the positioning sleeve 9 and the first convex shoulder. The top end of the locating sleeve 9 is provided with a through hole, the top end of the locating pin 10 is provided with a limiting part, and the limiting part penetrates through the through hole and is connected with the lifting assembly. The limiting part is a limiting boss arranged at the top end of the positioning pin 10, and the limiting boss is provided with an external thread and is matched and limited above the through hole by a limiting nut 13. The ear seat 3 is provided with at least two groups of positioning holes, one group of positioning holes is used for positioning the retraction state of the supporting rod 4, and at least one group of positioning holes is used for positioning the extension state of the supporting rod 4.

When the support rod 4 is in a retracted state, the elastic piece 11 acts on the first shoulder, and under the action of the elastic force generated by the elastic piece 11, the boss at the bottom end of the positioning pin 10 is pushed and pressed in the positioning hole of the ear seat 3; when the supporting rod 4 needs to be rotated and opened, the positioning pin 10 is lifted up through the lifting component, the boss at the bottom end of the positioning pin 10 is taken out of the positioning hole, the lifting component is loosened when the positioning sleeve 9 and the positioning pin 10 are aligned to the other group of positioning holes, and the boss at the bottom end of the positioning pin 10 enters the positioning hole again under the elastic action of the elastic component 11 to lock the supporting rod 4.

In an alternative embodiment provided by the present invention, the pulling assembly employs a looped bolt 12, and the looped bolt 12 is mounted to the looped screw hole at the top end of the positioning pin 10 by forming the mounting screw hole at the top end of the positioning pin 10 along the axial direction. Further, a locking nut 14 may be disposed between the band bolt 12 and the stop nut 13, and the band bolt 12 may be connected to the mounting screw hole after passing through the locking nut 14. It should be noted that the application does not specifically limit the connection structure between the pulling assembly and the positioning pin 10, as long as the pulling of the positioning pin 10 to unlock the rotation pin 15 and the support rod 4 by the positioning pin 10 is conveniently achieved.

On the basis of the above embodiments, the center of the positioning pin 10 provided by the present application is further provided with a second shoulder, the outer diameter of the second shoulder is smaller than that of the first shoulder so as to be matched with the elastic member 11, and the outer diameter of the second shoulder is larger than that of the through hole of the positioning sleeve 9, so as to avoid that the elastic member 11 is compressed too much or the positioning pin 10 passes through the through hole when the positioning pin 10 is pulled upwards.

After the support rod 4 is rotated to the opening position and positioned by the positioning assembly, the lifting leg assembly needs to be adjusted to adjust the support height of the auxiliary support leg. Optionally, the lifting leg assembly provided herein specifically comprises an internally threaded sleeve, a leg body 5 and a support base 7. The perpendicular rigid coupling of internal thread sleeve is in the first end of bracing piece 4, and landing leg body 5 then offers with internal thread sleeve complex external screw thread, and supporting seat 7 sets up the bottom at landing leg body 5. Realize the telescopic lift adjustment of the relative internal thread of landing leg body 5 through rotatory landing leg body 5, supporting seat 7 then is used for the area of contact of increase with ground, and prior art can be referred to in the connection of supporting seat 7 and landing leg body 5.

Preferably, the lifting leg assembly further comprises a rotating rod 6, the top of the leg body 5 is provided with a hole, the rotating rod 6 is vertical to the leg body 5 and is fixed in the hole at the top of the leg body 5, so that the leg body 5 can be easily rotated by rotating one end of the rotating rod 6 far away from the leg body 5, and the height of the lifting leg assembly can be adjusted.

As shown in fig. 1 and 2, the invention also provides a working vehicle, which comprises a chassis 1 and the auxiliary supporting legs described in the above embodiments. The engineering vehicle at least comprises four groups of auxiliary supporting legs, and the ear seats 3 of the four groups of auxiliary supporting legs are welded on two sides of the chassis 1 in pairwise symmetry. When the supporting rod 4 and the lifting leg assembly are in a retracting state, the supporting rod 4 is attached to the side portion of the chassis 1, so that the arrangement space is saved. Further, the engineering vehicle is specifically an omnidirectional moving aerial work platform, that is, the engineering vehicle further comprises a lifting work platform arranged above the chassis 1, the omnidirectional moving aerial work platform is specifically a mecanum wheel type work platform, and two pairs of four sets of mecanum wheels are respectively arranged at four corners of the chassis 1.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The engineering vehicle and the auxiliary supporting legs thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.