CN211647350U

CN211647350U - Arm support

Info

Publication number: CN211647350U
Application number: CN201922326228.0U
Authority: CN
Inventors: 章西荣; 陈立新; 贺冬冬; 王清平; 焦玉林
Original assignee: Jiangsu Ruicen Automobile Co ltd
Current assignee: Jiangsu Ruicen Automobile Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-10-09
Anticipated expiration: 2029-12-20

Abstract

The utility model provides an arm support, which relates to the technical field of engineering vehicle accessories and comprises a base and a rotating platform, wherein the rotating platform is placed on the base, a fixed support is placed on the rotating platform, the arm support is hinged on the fixed support, the fixed support and the arm support are provided with an amplitude variation device, the base is provided with fixed support legs, the fixed support legs comprise horizontal support bars and vertical support legs, the fixed support legs are uniformly distributed around the base, the support bars are fixed on the base through vertical fixed shafts, the support bars can be rotated to be retracted and extended, a first hydraulic oil cylinder is placed on the base at one side of the support bars, and a piston rod of the first hydraulic oil cylinder; the vertical supporting legs are arranged at the end parts of the supporting rods, second hydraulic cylinders are arranged in the supporting legs and are arranged downwards, and circular supporting legs are arranged at the tail parts of the piston rods and are used for being in contact with the ground.

Description

Arm support

Technical Field

The utility model relates to an engineering vehicle accessory technical field, concretely relates to cantilever crane.

Background

The cantilever type engineering machine is mainly used for concrete pumping, elevating fire fighting and the like, wherein a concrete pump truck is a typical cantilever type engineering machine, and the cantilever type engineering machine mainly utilizes pumping power to convey concrete to a specified position along a conveying pipeline.

The conveying pipeline is generally arranged on a foldable arm support device, the arm support device is generally provided with a plurality of sections of arm supports which are sequentially hinged, adjacent arm supports are connected through a link mechanism, and when the concrete pump truck is in a non-working state, all the sections of arm supports are in a folded state; when the concrete pump truck is in a working state, the boom is opened by driving each link mechanism through the telescopic action of the hydraulic oil cylinder, and the coordinated action of the link mechanisms among all sections of the boom is further controlled, so that the tail end hose reaches a preset position, and concrete pumping work is implemented.

However, the arm support in the prior art is usually installed on an engineering vehicle through a support rod, the problem of installation mismatch among different models exists, meanwhile, the installation process of the arm support is complicated, and the development of an integrated arm support system is important for installation and use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a novel arm support, which can solve the technical problem in the background technology.

The utility model discloses a following technical scheme realizes: an arm support comprises a base and a rotating table, wherein the rotating table is placed on the base, a fixed support is placed on the rotating table, the fixed support is hinged with the arm support, amplitude changing devices are arranged on the fixed support and the arm support, a fixed support leg is arranged on the base and comprises a horizontal support rod and a vertical support leg, the fixed support leg is uniformly distributed around the base, the support rod is fixed to the base through a vertical fixed shaft, the support rod can rotate to be retracted and extended, a first hydraulic oil cylinder is placed on the base on one side of the support rod, and a piston rod of the first hydraulic oil cylinder is hinged to the support rod; the vertical supporting legs are arranged at the end parts of the supporting rods, second hydraulic cylinders are arranged in the supporting legs and are arranged downwards, and circular supporting legs are arranged at the tail parts of the piston rods and are used for being in contact with the ground.

Preferably, the amplitude variation device preferably selects an amplitude variation oil cylinder, wherein a cylinder body of the amplitude variation oil cylinder and a piston rod of the amplitude variation oil cylinder are respectively hinged with the fixed support and the arm support.

Preferably, the support rod is internally provided with at least one section of inner rod in a sleeved mode, the inner rod can slide in the support rod, the surface of the inner rod is provided with a groove, the end portion of the support rod is provided with a stud, a threaded hole is formed in the support rod for placing the stud, and the inner rod is fixed in the groove after the stud is inserted into the groove.

Preferably, the tail part of the stud is provided with a rubber pad.

Compared with the prior art, the utility model discloses with the cantilever crane, integrated into one piece sets up between roating seat and the base, form a cantilever crane system, the base can welded fastening to engineering vehicle on, also can reserve mechanical connection's bolt hole on the base, the convenient connection, simultaneously on the base from having the fixed stabilizer blade that is used for supporting usefulness, the lifting protection wheel of the automobile body of not only being convenient for, simultaneously, under special environment, only also can the after-use under the cantilever crane condition, its supporting effect is unanimous with the supporting leg on the vehicle, can also guarantee simultaneously that cantilever crane stability is good, bear stronger torsion.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the base of FIG. 1;

fig. 3 is a schematic view of the structure of the fixing leg.

In the figure: 1. a base; 2. a rotating table; 3. a support bracket; 4. a boom; 5. a variable amplitude device; 6. a support bar; 7. an inner rod; 8. supporting legs; 9. a first hydraulic cylinder; 10. a piston rod; 11. a groove; 12. and (4) bolts.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1, an arm support 4 includes a base 1 and a rotating table 2, the base 1 is used for fixing an arm support 4 system on an engineering vehicle, wherein the rotating table 2 can rotate, a support bracket 3 is fixedly disposed on the rotating table 2, the support bracket 3 and the rotating table 2 are integrally formed, the support bracket 3 is made of hot forming steel, and strength is ensured, wherein the support bracket 3 is connected with the arm support 4, the arm support 4 is hinged to the support bracket 3, an amplitude variation device 5 is disposed between the arm support 4 and the support bracket 3, the amplitude variation device 5 can be an amplitude variation oil cylinder or an amplitude variation air cylinder, because of a large lifting force, the amplitude variation oil cylinder is preferred, a cylinder body and a piston rod 10 of the amplitude variation oil cylinder are respectively hinged to the support bracket 3 and the arm support 4, the arm support 4 is further hinged to an extended arm support 4, and is adjusted.

Further, a fixed support leg for fixing is arranged on the base 1, the fixed support leg is formed by combining a support rod 6 which is horizontally arranged and a support leg 8 which is vertically arranged, wherein the support leg 8 is arranged at the end part of the support rod 6, the support rod 6 for fixing is uniformly distributed around the circle center of the base 1 and is fixed on the base 1 through a vertical fixed shaft, the support rod 6 rotates around the fixed shaft in a memorial manner and can be folded and unfolded, wherein the support rod 6 is driven by a first hydraulic oil cylinder 9 to rotate and unfold, because the first hydraulic oil cylinder 9 is placed to limit the rotating angle of the support rod 6, the support rod 6 cannot be completely folded and unfolded onto the base 1 but can be placed tightly against the side wall of the base 1, wherein, an inner rod 7 is sleeved in the support rod 6, the inner rod 7 can slide in the support rod 6, at least one inner rod 7 is connected in the support rod 6, the regulation of 6 lengths of bracing piece carries out calculation control according to torsion and other power that produce in the actual hoist and mount, bracing piece 6 can guarantee to hang the card process more stable, bracing piece 6 is fixed mainly to be fixed through the recess 11 that sets up on interior pole 7 and the bolt 12 cooperation that supports the tip setting, the screw hole has been set up at 6 tip of bracing piece, the screw is twisted in the screw hole, fix in the screw inserts recess 11, it is fixed mainly for the antiskid, when supporting leg 8 supported, it is less to produce the sliding force.

In order to better fix the inner rod 7, a rubber pad is arranged at the bottom of the bolt 12 and contacts with the groove 11, so that sliding is better prevented.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a cantilever crane, includes base and revolving stage, and the revolving stage is placed on the base, has placed the fixed bolster on the revolving stage, and the last articulated cantilever crane that has of fixed bolster, fixed bolster and cantilever crane are provided with and become width of cloth device, its characterized in that: the base is provided with fixing support legs, the fixing support legs comprise horizontal support rods and vertical support legs, the fixing support legs are uniformly distributed on the periphery of the base, the support rods are fixed to the base through vertical fixing shafts, the support rods can be rotated to be retracted and retracted, a first hydraulic oil cylinder is placed on the base on one side of each support rod, and a piston rod of the first hydraulic oil cylinder is hinged to the support rods; the vertical supporting legs are arranged at the end parts of the supporting rods, second hydraulic cylinders are arranged in the supporting legs and are arranged downwards, and circular supporting legs are arranged at the tail parts of the piston rods and are used for being in contact with the ground.

2. The boom of claim 1, wherein: the amplitude variation device preferably selects an amplitude variation oil cylinder, wherein a cylinder body of the amplitude variation oil cylinder and a piston rod of the amplitude variation oil cylinder are respectively hinged with the fixed support and the arm support.

3. The boom of claim 1, wherein: still the cover is equipped with interior pole of at least one section in the bracing piece, and interior pole can slide in the bracing piece, and interior pole surface is provided with the recess, and the bracing piece tip is provided with the double-screw bolt, sets up the screw hole on the bracing piece of placing the double-screw bolt, and the pole in the double-screw bolt inserts the recess internal fixation.

4. The boom of claim 3, wherein: the tail part of the stud is provided with a rubber pad.