CN201458604U

CN201458604U - Wheeled crane movable weight

Info

Publication number: CN201458604U
Application number: CN2008201925423U
Authority: CN
Inventors: 艾凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-18
Filing date: 2008-11-18
Publication date: 2010-05-12
Anticipated expiration: 2018-11-18

Abstract

A wheeled crane movable weight relates to a wheeled crane, is in a structure of an improved wheeled crane weight, reduces the self weight of a suspension arm, increases the lift height and increases the amplitude and lifting weight. The movable weight is born by a weight frame and is connected with a fixed weight frame through a telescopic weight frame, and the fixed weight frame is fixed on the back part of a rotary table; when in working, the weight horizontally moves along the weight frame, so the stresses of the front bearing point and the back bearing point of the rotary table can be relatively balanced. A steel rope is connected with the weight and the arm end of the suspension arm to make the weight, the suspension arm and the rotary table keep a triangular structure, so the weight frame and the suspension arm can be prevented from bending, the whole stability of the crane is improved, and with a telescopic cab, a folding suspension arm frame and a weight fixing device, the motility and safety of the crane can not be influenced by the movable weight.

Description

Wheel crane mobile counterweight

Technical field

The utility model relates to wheel crane, specifically is meant a kind of mobile counterweight device that is used for wheel crane.

Technical background

Wheel crane is widely used with good manoevreability.But the constraint of conditions such as wheel crane is conducted oneself with dignity, arm slenderness ratio makes length, luffing and the lift heavy of its arm all restricted.

The utility model content

The purpose of this utility model is for overcoming the deficiency of above-mentioned wheel crane, improve wheel crane counter weight construction form, the horizontal throw of lengthening counterweight and turntable, connect counterweight and arm end by the winch steel rope, make counterweight, arm and turntable keep triangular structure, prevent counter-balanced carriage and arm bending, improve the hoisting crane resistance to overturning, reduce the arm deadweight, increase lifting altitude, increase amplitude and lift heavy.

For achieving the above object, the utility model adopts following technical scheme:

Wheel crane mobile counterweight is made up of counterweight, turntable, counter-balanced carriage, extendable weight frame, fixed weight frame, main arm winch, movable arm winch, contraction operator's compartment, folded boom arm support and counterweight anchor fitting; Counter-balanced carriage carrying counterweight is connected and fixed counter-balanced carriage by the extendable weight frame, and the fixed weight frame is fixed on the turntable rear portion, and counterweight connects arm arm end by arm winch steel rope.Because counterweight moves backward, counterweight is to the horizontal throw lengthening of turntable, the gravity of counterweight has increased the external load of turntable, make the stressed relative equilibrium of turntable front and back supporting-point, main arm winch is connected arm arm end with movable arm winch steel rope, makes counterweight, arm and turntable form triangular structure, be subjected to the effect of lineoutofservice signal pull, the counter-balanced carriage bending that causes when avoiding counterweight to move, the flexural deformation that causes when preventing arm because of lift heavy improves the resistance to overturning of hoisting crane.

The same longitudinal axis of fixed weight frame and arm, it connects counter-balanced carriage by at least one joint extendable weight frame, the horizontal throw of counterweight and turntable can be adjusted according to the needs of lift heavy and luffing thereupon, and counterweight and lift heavy have improved the stability of hoisting crane in same axis.

Counter-balanced carriage carrying counterweight, main arm winch and movable arm winch, its lowest part is higher than operator's compartment under the contraction state and the arm support under the folded state, the assurance mobile counterweight can be avoided the obstacle of operator's compartment and arm support in maximum radius of turn, do not influence the crossing ability of turntable.

Main arm winch steel rope connects main arm arm end, movable arm winch steel rope can be installed on the movable arm arm of the arbitrary joint end, make the counterweight under any operating mode, arm and turntable can keep triangular structure, and steel rope is stressed can to adopt pulley block structure when big.

Main arm winch and movable arm winch are provided with and counterweight, the winch switch and the steel rope stop motion mechanism of arm interlock, make in the hoisting crane work and when counterweight moves with the arm luffing, can loosen or tighten up steel rope synchronously, and make steel rope when motionless, be in stationary state, guarantee triangular structure the stablizing under any operating mode of counterweight, arm and turntable.

Shrink operator's compartment lower part periphery guide rail is set, be connected with the first half through jacking system, bearing circle is the angle adjustable structure, back of seat is a foldable structure, the operator's compartment first half can be dropped to along guide rail on every side cover the operator's compartment lower part, operator's compartment and arm support all are lower than turntable and counter-balanced carriage, allow turntable and counterweight also can avoid the obstacle of operator's compartment and arm support in maximum radius of turn, and good crossing ability is arranged.

The counterweight anchor fitting is installed in the underframe back segment, under counterweight and turntable return state, counterweight is fixed on the underframe, can keep counterweight stable when hoisting crane is travelled, and has improved drive safety.

The beneficial effects of the utility model:

1, improves crane stability

Because counterweight moves backward, counterweight is to the horizontal throw lengthening of turntable, and the gravity of counterweight has increased the external load of turntable, makes the stressed relative equilibrium of turntable front and back supporting-point, and because pull of steel wire is arranged, can increase the weight of counterweight.

2, reduce the arm deadweight, increase lifting altitude, increase amplitude and lift heavy

Because counterweight, arm and turntable have formed triangular structure, arm can comparatively safely be worked reliably, under equal constraint condition, prevent arm flexural deformation, strengthen resistance to overturning.

3, do not influence crossing ability and safety

Because counterweight is under pull of steel wire, make not flexural deformation of counter-balanced carriage, energy free control miles of relative movement is shunk operator's compartment and folded boom arm support, the assurance counterweight can be avoided obstacle in maximum radius of turn, and the counterweight anchor fitting can be securely fixed on the underframe counterweight when return.

Description of drawings

Accompanying drawing is a scheme drawing of the present utility model, among the figure

The main arm winch of 1---counterweight 6---

The movable arm winch of 2---turntables 7---

3---counter-balanced carriages 8---shrink operator's compartment

4---extendable weight frame 9---folded boom arm support

5---fixed weight frame 10---counterweight anchor fitting

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further described.

As shown in the figure: wheel crane arrives the work place, put down supporting leg after, can operate according to the following steps.

1, falls contraction operator's compartment 8, unclamp counterweight anchor fitting 10.

2, the movable arm that uses according to need is at its arm end installation activity arm winch 7 steel ropes.

3, rise arm, put down folded boom arm support 9.

4,, counterweight 1 is moved to suitable position with counter-balanced carriage 3 along extendable weight frame 4 and fixed weight frame 5 according to the requirement of lift heavy, arm height and amplitude and the obstacle in the radius of turn.

5, main arm winch 6 and movable arm winch 7 moving and the hoisting of arm, luffing in the operation process with counterweight, tighten up synchronously or loosen steel rope, the steel rope stop motion mechanism guarantees to be in stationary state all the time when steel rope is motionless, makes counterweight 1, arm and turntable 2 keep the triangle rock-steady structure.

6, after hours, counterweight 1 and turntable 2 returns are opened folded boom arm support 9, put down arm, and counterweight anchor fitting 10 is fixed on counterweight 1 on the underframe, recover to shrink operator's compartment 8, pack up supporting leg.

Claims

1. wheel crane mobile counterweight, form by counterweight (1), turntable (2), counter-balanced carriage (3), extendable weight frame (4), fixed weight frame (5), main arm winch (6), movable arm winch (7), contraction operator's compartment (8), folded boom arm support (9) and counterweight anchor fitting (10), it is characterized in that: counter-balanced carriage (3) carrying counterweight (1) is connected and fixed counter-balanced carriage (5) by extendable weight frame (4), fixed weight frame (5) is fixed on turntable (2) rear portion, and counterweight (1) connects arm arm end by arm winch steel rope.

2. according to the described wheel crane mobile counterweight of claim 1, it is characterized in that: described fixed weight frame (5) and the same longitudinal axis of arm, it connects counter-balanced carriage (3) by at least one joint extendable weight frame (4).

3. according to the described wheel crane mobile counterweight of claim 1, it is characterized in that: described counter-balanced carriage (3) carrying counterweight (1), main arm winch (6) and movable arm winch (7), its lowest part are higher than operator's compartment (8) under the contraction state and the arm support (9) under the folded state.

4. according to the described wheel crane mobile counterweight of claim 1, it is characterized in that: described main arm volume machine (6) steel rope connects main arm arm end, and movable arm winch (7) steel rope can be installed on the movable arm arm of the arbitrary joint end.

5. according to the described wheel crane mobile counterweight of claim 1, it is characterized in that: the winch switch and the steel rope stop motion mechanism of described main arm winch (6) and movable arm winch (7) setting and counterweight, arm interlock.

6. according to the described wheel crane mobile counterweight of claim 1, it is characterized in that: described contraction operator's compartment (8) lower part periphery is provided with guide rail, is connected with the first half through jacking system, and bearing circle is the angle adjustable structure, and back of seat is a foldable structure.

7. according to the described wheel crane mobile counterweight of claim 1, it is characterized in that: described counterweight anchor fitting (10) is installed in the underframe back segment.