CN102530740A

CN102530740A - Lorry-mounted crane

Info

Publication number: CN102530740A
Application number: CN2012100675313A
Authority: CN
Inventors: 王传新
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-15
Filing date: 2012-03-15
Publication date: 2012-07-04

Abstract

The invention discloses a lorry-mounted crane, which consists of a chassis (1), a slewing center, a boom (4), an amplitude oil cylinder (5), a winch (7) and a lifting hook (8), wherein the rotation center comprises a slewing bearing (2), a turntable (3) and a slewing drive (6), the slewing bearing (2) is fixed on the chassis (1) through bolts, the top end of the boom (4) is movably connected with the lifting hook (8), the crane is laterally arranged at the central part of a carriage, and the slewing center is positioned at the center of the longitudinal direction of the carriage and is deviated to one side along the left-right direction. The turntable (3) adopts a double-vertical plate box-type structure, and a connecting piece is arranged at a position which is close to a rear hinged point of the turntable (3). The cross section of the boom (4) is polygonal. The lifting hook (8) is connected with the top end of the boom (4) through a sliding block of a boom head, and the outer end part of the sliding block is provided with a barb structure.

Description

A kind of lorry-mounted crane

Affiliated field

The present invention relates to a kind of elevator machinery, turntable, polygonal cross-section crane arm, the arm head slide block that especially has two riser boxes is the new exclusive lorry-mounted crane of plug-in type all standing form.

Background technology

At present, artificial loading and unloading are adopted in the cement brick transhipment mostly on the market, and efficient is lower and cost is higher.Even use the elevator machinery operation, hoisting crane is placed in the front and rear part of railway carriage mostly, needs enough brachiums to carry article; Existing turntable is the veneer reinforced structure, the stress concentration of back hinge, easy mechanical breakdown such as tear; The crane arm cross section is quadrangular section mostly, and tension turns round that intensity is little, weight is big; Crane arm arm head slide block is local the covering in the arm cylindrical shell, stress concentration, and local stiffness is not enough.Therefore, receive a lot of restrictions during application.

Summary of the invention

[0003] in order to overcome above defective, the invention provides a kind of later-model lorry-mounted crane, hoisting crane is installed in the centre in compartment; Can quickly and easily article be transported in the railway carriage; Shorten the length of crane arm greatly, saved the complete machine material, assembling is also convenient.

In order to reach above purpose, the present invention has adopted following technical scheme: a kind of lorry-mounted crane, form by chassis, center of gyration, crane arm, amplitude oil cylinder, elevator, suspension hook etc.; Said center of gyration comprises pivoting support, turntable, rotary reducer; Pivoting support is through being bolted on the chassis, and the crane arm top is connected with suspension hook, and said hoisting crane is horizontally set with in the railway carriage centre; Center of gyration is positioned at the center of compartment fore-and-aft direction, is partial to a side on the left and right directions.

Turntable according to the invention adopts two riser box-structures, and the hinge place is provided with attaching parts after near turntable; Said crane arm cross section is a polygon; Said suspension hook is connected with the crane arm top through the arm head slide block, and the slide block outer end is provided with overhead structure.

After adopting above technical scheme; A kind of lorry-mounted crane of the present invention; Because hoisting crane is horizontally set with in the railway carriage centre, convenient and swift during the loading and unloading article, the length of crane arm also correspondingly shortens greatly; Save material effectively, had simple in structure, good manufacturability, advantage that torsion stiffness is big simultaneously.

Description of drawings

Below in conjunction with accompanying drawing the present invention is further described.

Fig. 1 is a crane structure scheme drawing of the present invention.

Fig. 2 is running condition figure of the present invention.

The specific embodiment

According to Fig. 1, shown in Figure 2, a kind of lorry-mounted crane of the present invention is made up of chassis 1, center of gyration, crane arm 4, amplitude oil cylinder 5, elevator 7, suspension hook 8 etc.; Said center of gyration comprises pivoting support 2, turntable 3, rotary reducer 6; Pivoting support 2 is through being bolted on the chassis 1, and crane arm 4 tops are connected with suspension hook 8, and said hoisting crane is horizontally set with in the railway carriage centre; Center of gyration is positioned at the center of compartment fore-and-aft direction, is partial to a side on the left and right directions; Crane arm is flat during vehicle ' lies prone, and is positioned at interior, and it is less to take up room, and crane arm and travel direction are 90 °, are no more than 700mm from baseplane, compartment to crane arm vertex size.Hoisting crane is maximum during work plays lifting moment 9.6kN.m, but lift heavy 2t during the 4.8m amplitude, lifting altitude 3.4m; Minimum radius is 1.2m, more than the lifting altitude 4m, because the hoisting crane volume-diminished is in light weight, need not add clump weight, has practiced thrift load-carrying and space so again.

Turntable 3 according to the invention adopts two riser box-structures; This structure composition the advantage of veneer reinforcement and framed structure; Its constructional feature is that the box-structure that the power of turntable 3 back hinges is formed through double-deck riser is delivered on the chassis 1, and the box-structure that double-deck riser is formed is not strengthened on chassis 1, is having box-structure to connect near hinge place, turntable 3 back; It can disperse the stress of hinge behind the existing hoisting crane; The tension that increases crane arm is turned round intensity, reduces the weight of crane arm, reduces the local contact stress of arm cylindrical shell lower cover.

Crane arm according to the invention 4 cross sections are polygon, and polygonal cross-section has tension with respect to quadrangular section and turns round that intensity is big, in light weight, the lifting performance advantages of higher, can effectively reduce crane arm downwarp and side sway, can reach its intended purposes.

Suspension hook 8 according to the invention is connected with crane arm 4 tops through the arm head slide block, and the slide block outer end is provided with overhead structure, and the outside face of slide block contacts with acromere arm cylinder inner surface, and inside face contacts with internal segment arm barrel outer surface; The single bending line equal in length of slide block width dimensions and cylindrical shell; The slide block gauge equals the spacing of cylindrical shell; The length of slide block can arbitrarily extend along arm.

The present invention is when vehicle ', and suspension hook 8 detachably gets off, and is placed in the railway carriage, during use, again suspension hook 8 is installed to crane arm 4 front ends.

The present invention also has been equipped with hold-down arm with car, and hold-down arm one end is connected with hoisting crane, and the other end is placed on the ground.When needs suspension hook railway carriage opposite side article, crane arm 4 rotates to opposite sense, and at this moment hold-down arm can carry the strength of crane arm 4.

Crane arm 4 arm heads adopt the veneer reinforced structure; The arm head slide block is a plug-in type all standing form; Crane arm bar shaped plug-in type slide block is arranged along the cylindrical shell direction; The slider designs length of this version does not receive the restriction of crane arm structure basically, and the slide block Design of length is reasonable, and the local stress that produces because of contact is controlled in the tolerance zone.The slide block structure characteristics: the crane arm cylindrical shell extends to head foremost, does not have the independent arm header structure, and novel bar shaped plug-in type slide block is arranged along the cylindrical shell direction; The slide block outer end is provided with overhead structure; Overhead structure is stuck on the head front end face during assembling, stops that slide block moves in cylindrical shell, contacts with acromere arm cylinder inner surface at the outside face of slide block; Inside face contacts with internal segment arm barrel outer surface, the single bending line equal in length of slide block width dimensions and cylindrical shell.The slide block gauge equals the spacing of cylindrical shell, and the length of slide block can arbitrarily extend along arm.Because slide block can be done very longly, thereby has increased the area of contact of bearing surface, has reduced the local contact stress of lower cover.Novel bar shaped plug-in type slide block processing is simple, easy to assembly.Reasonably design size has guaranteed itself and the curvature tolerance that contacts of cylindrical shell.

Telescoping mechanism of the present invention is single cylinder duplex type row four joint arm mechanisms, and this mechanism has that cost is low, performance is safe and reliable, fault rate is low, flexible efficient advantages of higher.

A kind of lorry-mounted crane of the present invention cooperates the application of special mould clamp can effectively reduce labor strength, improves cargo handing efficient more than 80%, reduces cost more than 50%.Have higher economic value and more considerable market outlook, the extensive handling mode of present stage is produced than far-reaching influence.

Claims

1. lorry-mounted crane; Form by chassis (1), center of gyration, crane arm (4), amplitude oil cylinder (5), elevator (7), suspension hook (8); Said center of gyration comprises pivoting support (2), turntable (3), rotary reducer (6); Pivoting support (2) is through being bolted on the chassis (1), and crane arm (4) top is connected with suspension hook (8), it is characterized in that: said hoisting crane is horizontally set with in the railway carriage centre; Center of gyration is positioned at the center of compartment fore-and-aft direction, is partial to a side on the left and right directions.

2. lorry-mounted crane according to claim 1 is characterized in that: said turntable (3) adopts two riser box-structures, is being provided with attaching parts near hinge place, turntable 3 back.

3. lorry-mounted crane according to claim 1 is characterized in that: crane arm (4) cross section is a polygon.

4. lorry-mounted crane according to claim 1 is characterized in that: said suspension hook (8) is connected with crane arm (4) top through the arm head slide block, and the slide block outer end is provided with overhead structure.