CN2059156U

CN2059156U - Small crane mounted on truck

Info

Publication number: CN2059156U
Application number: CN 89209777
Authority: CN
Inventors: 依工; 杨鹏; 田光生
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-12-05
Filing date: 1989-12-05
Publication date: 1990-07-11

Abstract

The utility model relates to a portable crane mounted on a truck, comprising upright posts, cantilevers, a three-rope pulley block, a lifting mechanism, and a slewing mechanism. The utility model is characterized in that the utility model has two sections of upright posts; a hand-operated elevating mechanism comprising a gear and a gear rack and a hand-operated telescoping mechanism are arranged between the two sections of upright posts and two sections of cantilevers; the utility model adopts the hand-operated lifting mechanism and the slewing mechanism. The crane has simple structure, convenient maintenance and use, energy saving and low cost.

Description

Small crane mounted on truck

The miniature lorry-mounted crane of the utility model is a kind of improvement to lorry-mounted crane, and is lighter than existing hydraulic pressure lorry-mounted crane, is suitable for lifting than small articles.

Current except that using more at large the car hosit, on many transport vehicles the fluid pressure type lorry-mounted crane is housed, but Self-loading ﹠ self-unloading, lifting weight is big, the hoisting depth height, radius of turn is also bigger, this fluid pressure type lorry-mounted crane, majority is installed on the large-scale professional transport vehicle, and the transport vehicle little to the volume of goods loaded and unloaded, that transportation volume is less is just not too suitable, particularly be used to carry the transport trolley of less tool equipment on the building ground, as it is just very uneconomical to load onto the fluid pressure type lorry-mounted crane: complex structure, cost height, power consumption also need the special messenger to manipulate greatly.

The purpose of this utility model be development a kind of simple in structure, easy to operate, save the energy, light miniature lorry-mounted crane.

The miniature lorry-mounted crane of the utility model is made up of column, cantilever, three rope pulley groups, suspension hook, lift system and movable supporting legs, be characterized in that this hoisting crane is the telescopic columns of two joints, manual lifting mechanism and manual telescoping mechanism are being housed respectively between the two joint columns and between the two joint cantilevers, adopted hand hoisting mechanism, adopted swing type mechanism at column and cantilever junction.

Manual lifting mechanism and manual telescoping mechanism are the physical construction of gear and tooth bar cooperation, promptly on the second joint column (the second joint cantilever), tooth bar is housed vertically, this tooth bar and the gear mesh that is contained on the first segment column (first segment cantilever), handle is contained on the gear wheel shaft; Shake handle, gear rotates the drive tooth bar and moves, and has ratchet to brake at any time, so just can make the second joint column lifting (or the second joint cantilever is flexible).Two joint columns or two joint cantilevers all adopt suit to cooperate.

Hand hoisting mechanism forms by pulley, worm gear, worm screw with the coaxial reel of worm gear, shakes the handle rotary worm and drives worm gear and rotate, and the steel rope that will come from three rope pulley groups is walked around pulley on reel, thereby made the object up-down on the suspension hook.

The revolving sleeve that axis of revolution and axle outside are arranged in the swing type mechanism, axis of revolution inserts in the second joint column, and revolving sleeve and first segment cantilever are fixed together, and the second joint column and backing plate are fixed together, on axis of revolution top pressing plate and nut are housed, it is moving with regard to the wraparound rotating shaft that the promotion cantilever rotates back to pivoted housing around column.

The column of hoisting crane is close to the preceding guardrail of automobile, with the ∪ clamp column is fixed on the preceding guardrail, column lower end is fixed on the top of car chassis crossbeam, and movable supporting legs is housed on column, during work supporting leg is put on the position vertical with preceding guardrail, guarantees that column is stable.

This miniature lorry-mounted crane and existing hydraulic pressure lorry-mounted crane relatively have following advantage:

1, simple in structure, stretch out when column, cantilever and movable supporting legs work, before tightly leaning against after shrinking during inoperative on the guardrail, volume is less, easy to maintenance, flexible operation, be convenient to generally apply.

2, this equipment belongs to simple physical construction, and cost is low, and all uses M/C in the course of the work, can save a large amount of energy.

Fig. 1 is miniature lorry-mounted crane working state schematic representation.

Fig. 2 is three rope pulley groups and suspension hook structural representation.

Fig. 3 is cantilever telescoping mechanism and upright column elevator structure structural representation.

Fig. 4 is the A-A cutaway view of Fig. 3.

Fig. 5 is the lift system scheme drawing.

Fig. 6 is the cantilever gyration mechanism scheme drawing.

Automobile 1 is arranged among the figure, first segment column 2, the second joint column 3, manual lifting mechanism 4, first segment cantilever 5, the second joint cantilever 6, manual telescoping mechanism 7, three rope pulley groups 8, lift system 9, swing type mechanism 10, guardrail 11 before the automobile,

pulley

12,13,14,

sheave shaft

15,16, steel rope 17, right backplate 18, left side backplate 19, suspension hook 20, gear 21, gear wheel shaft 22, bearing 23, bearing seat 24, tooth bar 25, ratchet 26, spring 27, bearing block support 28, axis of revolution 29, revolving sleeve 30, backing plate 31, pressing plate 32, nut 33, screw rod 34, worm gear 35, worm gear and drum shaft 36, right side board 37, left side board 38, reel 39, pulley 40, sheave shaft 41, movable supporting legs 42.

Miniature lorry-mounted crane according to above-mentioned design plan manufacturing, promote bottom-to-top-height 2650mm, 1350mm on the car wherein, radius of turn 1160-2000mm, during lifting, handle shakes power 3Kg, and hoisting speed 0.8m/ minute, the thrust 15Kg of revolution cantilever, when the second joint cantilever stretches out, handle shakes power (band weight) and is 26Kg, and (not being with weight) handle shook power 11Kg, cantilever and vertical column expanding speed 4.5m/ minute when the second joint column stretched out, specified lifting weight 0.5T, this hoisting crane is contained in practicality on the small transporting vehicle of using the building ground, respond well, have light, flexibly, characteristics such as be suitable for.

Claims

1, a kind of miniature lorry-mounted crane, form by column, cantilever, three rope pulley groups (8), suspension hook (20), lift system (9) and movable supporting legs (43), it is characterized in that this hoisting crane is two joint telescopic columns (2,3), manual lifting mechanism (4) and manual telescoping mechanism (7) are being housed respectively between the two joint columns (2,3) and between the two joint cantilevers (5,6), adopted hand hoisting mechanism (9), adopted swing type mechanism (10) at column and cantilever junction.

2,, it is characterized in that manual lifting mechanism (4) and manual telescoping mechanism (7) are the physical construction of gear (21) and tooth bar (25) cooperation according to the described hoisting crane of claim 1.

3, according to claim 1,2 described hoisting cranes, it is characterized in that on the second joint column (3) tooth bar (25) being housed vertically, this tooth bar (25) and gear (21) engagement that is contained on the first segment column (2), handle is contained on the gear wheel shaft, shake handle, gear (21) rotates, and drives tooth bar (25) and moves.

4, according to claim 1,2 described hoisting cranes, it is characterized in that on the second joint cantilever (6), tooth bar (25) is housed vertically, and this tooth bar (25) and gear (21) engagement that is contained on the first segment cantilever (5) shake handle gear (21) rotating band carry-over bar (25) and move.

5,, it is characterized in that lift system (9) is made up of pulley (40), worm gear (35), worm screw (34) and the reel (39) coaxial with worm gear according to the described hoisting crane of claim 1.

6, according to the described hoisting crane of claim 1, it is characterized in that having in the swing type mechanism (10) revolving sleeve (30) of axis of revolution (29) and axle (29) outside, axis of revolution (29) inserts in the second joint column (3), swivel sleeve (30) is fixed together with first segment cantilever (5), the second joint column (3) is fixed together with backing plate (31), on axis of revolution (29) top pressing plate (32) and nut (33) is housed.