CN2360320Y

CN2360320Y - Side surrounding tension reinforced covering equipment for passenger carriage

Info

Publication number: CN2360320Y
Application number: CN 97238291
Authority: CN
Inventors: 陈作式; 杨敬滋
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-04
Filing date: 1997-06-04
Publication date: 2000-01-26
Anticipated expiration: 2007-06-04

Abstract

The utility model relates to a device which is provided for assembling and welding covering skin of the side wall of a passenger car body by applying the theory of metal ductility and the principle of mechanics of materials. The device is mainly composed of a supporting framework, fixed and moveable clamping tools, a stretching mechanism, a pushing device, and hydraulic and electric parts. The covering skin is glued on the framework and is welded in a method of no fewer than 5 freedom degrees after most of internal stress is released by reinforced prestretching and hydraulic off-loading and a program of properly tensional force is reserved under one-time clamping of materials. The passenger car can obtain an ideal straight appearance by using the device. The agitation noise of the covering skin is low in a travel. The device has the advantages of fewer wastes of the materials, capability of the reduction of framework material input, less internal stress of the covering skin, long service life, and less energy consumption per hour of the covering skin.

Description

Bus body gusset stretch-draw stiffened skin equipment

The utility model relates to the novel process equipment in the bus body manufacturing, is mainly used in assembly welding passenger vehicle gusset exterior skin.

For the monoblock exterior skin of skeleton type bus body gusset, for improving outward appearance, improve its tall and straight degree, need welding again after the skin material stretch-draw, original tensioning process is to utilize body framwork cold drawn, this method is because allowed pulling force is little, weak effect.Second generation technology is the heat expansion method, and covering is welded under heat expansion, promptly shrinks tension after the cooling, with this method outward appearance bigger improvement is arranged, but negative effect is big, the energy consumption height, labor condition is abominable, the operator directly is subjected to high heat baking, more its disadvantageously, it is low that the vehicle body that processes is like this kept the life-span of original-shape, old and feeble fast, internal stress is big, after the galling, easily tears.

The purpose of this utility model provides a kind of suitable China's national situation, carries out brand new bus body gusset stretch-draw stiffened skin skin technology, that can reduce production costs and reach first-class covering effect equipment.

The utility model be achieved in that bus body gusset stretch-draw stiffened skin equipment by support frame [2], stationary fixture [1] and mobile anchor clamps [3], drawing mechanism [4], hydraulic pressure and electric [5], push unit [6], etc. form.Principal character is: support frame [2] is a welded-steel plate construction, and its length and width bear whole stretching antagonistic forces by the vehicle decision of institute's covering, and its strained condition is eccentric compression; Fixing and mobile anchor clamps [1], [3] are arranged in the support frame two ends, and broad ways clamping skin material [7] is implemented to clamp by the press strip mode with the manual spiral of multiple spot; Drawing mechanism [4] is fixed on an end of support frame [2], built-in mobile anchor clamps [3], and under the dragging of oil cylinder piston bar, mobile anchor clamps [3] are along two cylindrical slideway slippages; Hydraulic pressure adopts integrated circuit; Push unit [6] must satisfy the requirement of at least 5 degree of freedom.Concrete technological process is: clamping skin material [7], with hydraulic pressure material is implemented to stretch at normal temperatures, make the tensile stress that in material, produces surpass about 20% of the material yield limit, after reaching the setting pulling force, can the removal most of pulling force of hydraulic efficiency pressure system (at this moment, material is made elastic recovery and is discharged most of internal stress), and in material reservation＜350Kg.f/cm ²Residual stress, material is being kept under the slack-free state, by upper skeleton and welding.

Below in conjunction with accompanying drawing the utility model is done comparatively detailed description:

The integral structure figure of Fig. 1 bus body gusset stretch-draw stiffened skin equipment;

The interrelation figure of Fig. 2 support frame, anchor clamps, drawing mechanism etc.;

Fig. 3 is the internal organs view of Fig. 2;

Fig. 4 trolley type thrust gear;

Fig. 5 suspension type thrust gear;

Among the above-listed figure: [1] is stationary fixture; [2] be support frame;

[3] be mobile anchor clamps; [4] be drawing mechanism;

[5] be hydraulic pressure and electric; [6] be push unit;

[7] be skin material; [8] be principal post;

[9] be dolly; [10] be counterbalanced weight;

[11 is steel cable;

The utility model is made up of two major parts:

1, the clamping of skin material and stretching (seeing accompanying drawing 3)

A, support frame [2]

Be equivalent to body, other parts are installed thereon, be welded-steel plate construction, lengths of frame and width bear whole stretching antagonistic forces by the vehicle decision of institute's covering, and its strained condition is eccentric compression.

B, fixing and mobile anchor clamps

Be arranged in support frame [2] two ends (seeing accompanying drawing 3), broad ways clamping skin material is implemented to clamp by the mode of press strip with the manual spiral of multiple spot, press strip is an integral type, length is slightly larger than the covering width, and the quantity of cramping point depends on the covering width, general spacing 140 millimeter.

C, drawing mechanism [4]

Be fixed on an end (seeing accompanying drawing 2,3) of support frame [2], built-in mobile anchor clamps [3], under the dragging of oil cylinder piston bar, mobile anchor clamps [3] are along two cylindrical slideway slippages, thus realization is to the processing of skin material.In drawing mechanism, also be provided with the stroke link stopper, travel switch and stroke scale.

D, hydraulic pressure and electric

Hydraulic pressure adopts integrated circuit, and fuel tank places mill floor.

2, push unit [6]

The utility model be with material under clamping, after finishing the prestretching of material, off-load, tensioning supervisor, stick skeleton and welding, action by upper skeleton, (another can move generation by vehicle must to satisfy the requirement of at least 5 degree of freedom, total can realize 6 degree of freedom), two Analysis of Nested Design are arranged for this reason:

A, bracing frame is installed in (see figure 4) on the little frame of array, is provided with screw mechanism or elevating ram on dolly, when making framework lean on upper skeleton, framework can be realized 5 degree of freedom.

B, framework is suspended on column [8] (see figure 5) with steel wire [11], the other end of steel rope is equipped with counterbalanced weight [10], and this method can realize 6 degree of freedom.

The utility model has the advantages that:

1, material can be received the effect of killing three birds with one stone by powerful prestretching and answer.

A produces plastic deformation, causes metal flow, is once to smooth more thoroughly process, coiled material Can exempt smoothing operation in advance after the uncoiling blanking, directly installation is used, and can obtain desirable tall and straight outward appearance, And this flat after, can be placed on the skeleton and weld, do not have transport process, can effectively guarantee matter Amount reduces waste product.

B, material have improved the ability of material opposing permanent deformation, thereby have improved the vehicle body life-span by flow harden.The sclerosis of material on the other hand helps improving the integral rigidity of vehicle body, thus can reduce covering under steam agitate noise.

C, by replying (the most of load of removal), eliminated the most internal stress that in prestretching, causes, this internal stress will jeopardize the life-span of vehicle body, thereby the huge drawback of having avoided the heat expansion method to bring.During the cold contraction of heat expansion method, formed huge internal stress, when acting on external force direction on the covering when consistent with framework deformation, total stressed of covering is this two power phase superposition, causes the covering elongation strain easily, influences the vehicle body life-span.Owing to eliminated most of internal stress, can also stop the generation of " tearing " effectively.

2, the suitable attenuate of covering, the body framwork materials can reduce, thereby reduce the vehicle body deadweight, reduce production costs.

3, reduced the skin material new field of technical activity technical requirements of (uncoiling, smoothing, accumulating), reduced productive costs from another side.

4, tens of/one that energy consumption is low, consumption of current only reaches electrothermal way.

5, labor condition is improved.

6, equipment meets Chinese current national conditions, and is simple in structure, and operation is cheap easily.

Claims

1, a kind of bus body gusset stretch-draw stiffened skin equipment, mainly by support frame, fixing and mobile anchor clamps, drawing mechanism, push unit, hydraulic pressure and partly composition such as electric is characterized in that:

A, support frame are welded-steel plate construction.

B, fixing be arranged in the support frame two ends, implement clamping by the mode of press strip with the manual spiral of multiple spot with mobile anchor clamps;

The c drawing mechanism is fixed on support frame one end, built-in mobile anchor clamps, and travel switch, stroke scale, oil cylinder connects with Hydraulic Station with rubber tube, spurs mobile anchor clamps by piston rod, thereby realizes the stretching to skin material;

D, push unit can be made up of the array dolly, can realize that also available steel rope is suspended on support frame on the column to the moving of support frame, lifting, rotation, and the rope other end is equipped with counterbalanced weight, realizes the operation to framework.

2, covering equipment according to claim 1 is characterized in that: the press strip of holder part is an integral type, and length is slightly larger than the covering width, and the quantity of cramping point depends on the covering width, and general spacing is 140 millimeter.