CN2149373Y

CN2149373Y - Mobile crane

Info

Publication number: CN2149373Y
Application number: CN 92241472
Authority: CN
Inventors: 朱一多
Original assignee: BEIJING CRANE PLANT
Current assignee: BEIJING CRANE PLANT
Priority date: 1992-11-20
Filing date: 1992-11-20
Publication date: 1993-12-15
Anticipated expiration: 2002-11-20

Abstract

The utility model relates to a face tyre crane which is composed of a suspended hook, a suspended arm, a Y-shaped bracket, a rear axle, a front axle, a power device, a frame, an operator cabin, rising and derricking mechanisms, etc. The utility model is characterized in that the face tyre crane has the integral welded frame, deflecting front axle drive and full hydrostatic steering rear axle structure, and is a hoisting machine with hoisting and running functions. The utility model is especially suitable for harbors, railroad stations, etc. to load, unload and stack, and has the advantages that the structure is small and compact, the rear track L is big, the turning radius is small, the stability is good, the operation is safe and the hoisting performance is fine, the hidden trouble which the same foreign device is easy to overturn is avoided.

Description

Mobile crane

The utility model is a kind of elevator machinery that lifting and driving functions have both that has, and can be widely used in the loading and unloading and the palletizing operation of harbour, Railway station etc.

Existing similar front wheel-mounted crane, the standard 8 type hoisting cranes of the La Pier of routine Britain (RAPIER).Since this Vehicular turn rear track L little (having only 840mm) therefore lateral direction of car stressed with the bevelled situation under, center of gravity surpasses the edge line that laterally topples easily, particularly hang idling and bend this situation that more is prone to when travelling, there is serious accident potential, in actual the use overthrow accident takes place repeatedly.And the steering hardware of this car is reversible mechanical drive mode, and when adopting one side brake (a drive wheel braking, another drive wheel driven) emergency turn, revolution rapidly takes place bearing circle, very easily injures operating personal.And the lifting performance of this car can not satisfy present loading and unloading needs.

The purpose of this utility model is to overcome above-mentioned shortcoming exactly, provides a kind of stability good, safety of operation, flexibility and reliability, the front wheel-mounted crane that lifting performance is high.

Task of the present utility model is achieved in that

1, changes traditional double motors of rear axle driving and change the propons driving into, and adopt DC machine to drive propons, characteristics such as transmission is reversed greatly, load-carrying capacity height that it has.Propons is the offset structure through the transformation of the way simultaneously, and the propons after the improvement is a prerequisite to satisfy the needs of arranging engine installation in vehicle frame.

2, the rear-axle steering system changes welded type back axle hydrostatic steering system into by former mechanical reversible type structure.It is by hydraulic reservoir 5C(and vehicle frame one), to stablize flow divider valve 8D, all-hydraulic steering gear 8A(be a hydraulic distributing valve for Hydraulic Pump (in engine installation), compression indicator 8E, single channel), turn to oil cylinder 4F(at back axle 4 places) and bearing circle 4B form.The steering swivel system this by transverse hydro-cylinder, that crank block and cycloid formula all-hydraulic steering gear are formed is when back axle wheelspan L is big (to guarantee whole vehicle stability), still can realize turning to of big deflection angle, whole hoisting crane is turned to flexibly, and turn radius is little, can be at narrow sitework.Can solve hoisting crane three point support and the little contradiction of turn radius requirement after L widens preferably, produce the hidden danger of toppling, guarantee the safety of people's car thereby eliminated.

3, the integral type welded frame has replaced the frame-type vehicle frame, front end is except mudwing 5A, propons mounting bracket 5G, also be useful on the bearing 5H that the engine installation support is settled, on have shrouding 5D to be used to install operator's compartment, drive motor mounting bracket 5I is arranged at the shrouding bottom, the left and right sides is made box-shaped respectively, except making carrying structure, also serves as hydraulic reservoir and fuel tank.Reduced body frame structure for automotive like this, made car load small and exquisite flexibly.

Embodiment:

Below in conjunction with Figure of description the utility model embodiment is described further:

Accompanying drawing 1 is the profile lateral plan of one of the utility model embodiment: it is made up of suspension hook 1, arm 2, Shears 3, welded type back axle 4, vehicle frame 5, engine installation 6, propons 7, operator's compartment 8, lifting mechanism 9, luffing mechanism 10 etc.

Accompanying drawing 2 is the birds-eye view of welded type back axle, and wherein 4A is tire, link rod 4B, back bridge construction 4C, bracket assembly 4D, bearing pin 4E, turns to oil cylinder 4F, steering swivel 4G.The column 4H of steering swivel 4G is contained on the bridge construction 4C of back, wheel hub 4I is housed on the steering swivel 4G, tire is loaded on the steering swivel by wheel hub, turn to the piston rod 4J among the oil cylinder 4F to link by link rod 4B and steering swivel 4G, and act on chamber, the oil cylinder left and right sides by pressure oil (through turning to oil cylinder 4F last oil inlet and

outlet

4K, 4L) from all-hydraulic steering gear 8A, make the piston rod side-to-side movement, and make left and right sides tire, thereby realize that car load turns to around the central motion of steering swivel column separately.

Accompanying drawing 3 and 4 is the birds-eye view and the lateral plan of the utility model vehicle frame, and wherein 5A is mounting bracket 5K, back axle erection support 5L behind mounting bracket 5G, drive motor mounting bracket 5H before mudwing, fuel tank 5B, hydraulic reservoir 5C, upper sealing plate 5D, bumper/spoiler 5E, propons mount pad 5F, the engine installation, water tank mounting bracket 5J, the engine installation.It is characterized in that vehicle frame is the integral solder formula, front end also is useful on the bearing 5G that the engine installation support is installed except mudwing 5A, propons mounting bracket 5F, have shrouding 5A to be used to install operator's compartment above.Drive motor mounting bracket 5H is arranged at the shrouding bottom, is used for the installation of drive motor.The left and right sides is made box-shaped respectively, has also served as hydraulic reservoir and fuel tank except making carrying structure, has reduced body frame structure for automotive, makes car load small and exquisite flexibly.

Accompanying drawing 5 is the utility model bridge and actuating device figure before.Wherein 7 is that propons, 7A are that tire, 7B are that quincunx elastic clutch, 7C are direct-drive motor.Electrical motor 7C drives propons 7 by quincunx elastic clutch 7B makes whole hoisting crane finish the work of travelling.Its characteristics are that propons is offset, DC machine direct drive, the hoisting crane of changing over double motors of rear axle drive form.Propons offset or dish L(is from the front axle centre distance) engine installation needs the space to be as the criterion can settle down.Present embodiment L=400mm.

Accompanying drawing 6 is the operator's compartment 8 of the utility model, and wherein 8A is an all-hydraulic steering gear, the 8B bearing circle, and the 8C seat, the 8D single channel is stablized flow divider valve, the 8E compression indicator.Vehicle frame links with forward and backward bridge respectively by attachment bolt, and Shears links with the preceding end support of vehicle frame and back end support respectively by bearing pin, and arm links by axle and Shears.Arm head, arm end, arm middle pulley are housed to satisfy the winding needs of steel rope on the arm.

Travelling of hoisting crane relies on DC machine direct drive propons to realize.Propons is the offset construction machinery and equipment bridge through the special transformation of the way.The propons of the transformation of the way can satisfy the needs of arranging aroused in interest device in vehicle frame.The offset or dish L=400mm of present embodiment.Turning to of hoisting crane is to rely on rear-axle steering to realize, it a kind ofly is made up of transverse hydro-cylinder (turning to oil cylinder one), crank block and cycloid formula all-hydraulic steering gear, lead to the chamber, the left and right sides of oil cylinder from the pressure oil of hydraulic efficiency pressure system, make the side-to-side movement of oil cylinder piston bar and make tire, thereby realize the purpose that car load turns to around column central motion separately.Later-model steeraxle mechanism, (to guarantee whole vehicle stability) still can realize turning to of big deflection angle when track rear L is big, make car load turn to flexibly, turn radius is little, can be at narrow sitework.

Wheelspan L is 1800mm after the present embodiment.Imperial palace wheel deflection angle is 65 °, and minimum turning radius is that 4.2m(hull back gabarit is to the turning center distance), minimum operation path width is 5.3m.

Engine installation is made up of driving engine and DC machine, and the entire bracket front and back end links by elastic dampers and vehicle frame, has guaranteed the shock insulation between engine installation and the vehicle frame.Be separately fixed at before and after the crash-resistant Shears lower end before and after the vehicle frame, last end bearing arm can relative motion between arm and the Shears, can change work range with the assurance hoisting crane.The lifting function of hoisting crane is to be realized by the lifting mechanism that is installed on the vehicle frame afterbody, and the steel rope of drawing from reel twines hook is realized suspension hook by the rotation of reel lifting by the assembly pulley on the arm.The change at the crane arm elevation angle is to realize by the luffing mechanism that is installed on the vehicle frame afterbody, and the luffing steel rope is by behind the assembly pulley of arm afterbody, and fag end is fixed on the vehicle frame rear end, and the retractable by the luffing steel rope realizes facing upward or bowing of arm.

In addition, system and devices such as that this hoisting crane also is provided with is electric, hydraulic pressure and gas circuit are to guarantee the normal operation of hoisting crane.

Claims

1, a kind of front wheel-mounted crane, by suspension hook 1, arm 2, Shears 3, back axle 4, vehicle frame 5, engine installation 6, propons 7, operator's compartment 8, lifting mechanism 9, luffing mechanism 10 compositions such as grade is characterized in that having adopted:

A, integral type welded frame: it by mudwing 5A, fuel tank 5B, hydraulic fluid tank 5C, upper sealing plate 5D, bumper/spoiler 5E, propons mount pad 5F, engine installation before behind mounting bracket 5G, drive motor mounting bracket 5H, water tank mounting bracket 5J, the engine installation mounting bracket 5K, back axle erection support 5L etc. be welded into one

B, propons drive: it is made up of tire 7A, quincunx elastic clutch 7B, direct-drive motor etc., and is driven by direct current and to draw motor 7C and drive propons 7 by quincunx elastic clutch 7B, makes whole hoisting crane finish the work of travelling,

C, all-hydraulic rear-axle steering: it is by tire 4A, link rod 4B, back bridge construction 4C, bracket assembly 4D, bearing pin 4E, turn to oil cylinder 4F, compositions such as steering swivel 4G, the column 4H of steering swivel 4G is contained on the bridge construction 4C of back, wheel hub 4I is housed on the steering swivel 4G, tire is loaded on the steering swivel by wheel hub, turn to the piston rod 4J among the oil cylinder 4F to link by link rod 4B and steering swivel 4G, and by pressure oil from all-hydraulic steering gear 8A, through turning to the last oil inlet and outlet 4K of oil cylinder 4F, 4L, act on chamber, the oil cylinder left and right sides, make the piston rod side-to-side movement, and make left and right sides tire, thereby realize that car load turns to around the central motion of steering swivel column separately.

2, the hoisting crane according to claim 1 is characterized in that propons is an offset, and its offset or dish is 400 millimeters.

3, the hoisting crane according to claim 1 is characterized in that back axle is a welded structure.