Vehicle body of railway vehicle assembling take-up device
Technical field
The utility model relates to a kind of take-up device, and particularly a kind of car body of rail vehicle employed take-up device when assembling belongs to vehicle body of railway vehicle package technique field.
Background technology
At present in the rail vehicle production process, car body all is the sub-module assembling, when particularly connecting between the flat-top of car body and the roof side bar, because flat-top and roof side bar all are to adopt steel construction, in the production and blanking process in early stage, can produce small distortion unavoidably, make in the assembling procedure in later stage, can not cooperate well between two workpiece, do not reach the desired size of assembling, so in the assembling procedure in later stage, all will adopt a kind of take-up device, so that reach matching requirements between the workpiece that two needs weld together.
Existing take-up device, all be that the mode of pull bar two ends with welding is fixed together with the workpiece that needs tension, so after using up at every turn, must use instruments such as electric mill with the two ends of this take-up device from the workpiece to grinding, all can cause bigger damage to workpiece and pull bar like this, and it is time-consuming, effort, also dangerous, production efficiency is low, working strength of workers is big, is not suitable for the requirement that modern industrialization is produced.
In existing take-up device, the opposite screw pair structure of the rotation direction of employing is also arranged, as the patent No. is ZL94247995.5 disclosed " frame double hook turnbuckle ", a kind of double hook turnbuckle that can strain the flexible rope kind workpiece fast and effortlessly, it is by link span, the stirrup link mechanism that middle link span becomes with rod hinge connection forms, the two ends of linkage are rotary with double hook, the partner opposite screw pair of rotation direction of coarse pitch of double hook and link span, during pretension, coarse pitch on the double hook can make and speed up, behind the pretension, the handle of pulling along the stringing direction rotates by the strut that ratchet drives fine pitch, shorten distance between double hook to strut framework, make final stringing more laborsaving, avoided again simultaneously workpiece and double hook with handle rotate synchronously cause can't stringing drawback.This device mainly is applicable to tension flexible rope kind workpiece, is not suitable for the car body assembling of rail vehicle, and the two ends of this take-up device adopt the double hook structure, when installation and removal, all needs two are hooked on the workpiece or take off, and not only effort is also dangerous.
Summary of the invention
The utility model main purpose is to address the above problem and is not enough, provides a kind of car body that is used for rail vehicle employed simple to operation when assembling, and operating personnel's safety is not damaged the take-up device of workpiece.
For achieving the above object, the technical solution of the utility model is:
Comprise base and tensioning mechanism, an end of tensioning mechanism and base flexibly connect, and the other end of tensioning mechanism connects a hold down gag.
Further improvement of the utility model is, to flexibly connect by pin between described hold down gag and the tensioning mechanism, the other end of described hold down gag is a pincerlike structure that is used for clamping work pieces that is " L " type, described tensioning mechanism is made up of the framework that two screw mandrels and two ends have nut, described two screw mandrels and two nuts opposite screw pair structure of rotation direction that partners.
Content to sum up, vehicle body of railway vehicle assembling take-up device provided by the utility model, simple in structure, easy to operate, when the assembling car body, only need the edge of work of needs tension is inserted in the hold down gag, the rotation tensioning mechanism just can be strained workpiece by the opposite screw pair structure of rotation direction, is movably connected by latch structure between tensioning mechanism and the hold down gag, unclamp workpiece after inserting workpiece or use before no matter being to use, all very convenient, adopt between tensioning mechanism and the base to flexibly connect, after this device uses, this device can also be fallen on the ground, and avoid hurting sb.'s feelings.The use of this device can be enhanced productivity significantly, reduces working strength of workers, can also reduce hidden danger.
Description of drawings
Fig. 1 the utility model structural representation;
Fig. 2 the utility model structural representation in use;
Fig. 3 two kinds of user mode figure of the present utility model.
As shown in Figure 1 to Figure 3, base 1, tensioning mechanism 2, hold down gag 3, pin 4, workpiece 5, screw mandrel 6, nut 7, framework 8, pin 9.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
As shown in Figure 1 to Figure 3, described vehicle body of railway vehicle assembling take-up device:
Comprise base 1 and tensioning mechanism 2, base 1 directly fixes on the ground by expansion bolt, tensioning mechanism 2 is made up of the framework 8 that two screw mandrels 6 and two ends have nut 7, two screw mandrels 6 and two nuts 7 opposite screw pair structure of rotation direction that partners, by rotating frame 8, can be so that the screw mandrel at two ends 6 inwardly precessions simultaneously, or outwards screw out simultaneously, during the inside precession of two screw mandrels 6, just can strain connected workpiece 5.Wherein, framework 8 also can adopt other structure, as tubular structure or the like.
One end and the base 1 of tensioning mechanism 2 are movably connected by pin 9, after this device is used to complete, whole device can be fallen on the ground, can not hurt the workman who works around like this.
The other end of tensioning mechanism 2 connects a hold down gag 3, also be movably connected between hold down gag 3 and the tensioning mechanism 2 by pin 4, unclamp workpiece 5 after inserting workpiece 5 or use before no matter being to use, as long as the hold down gag 3 of active tip, do not need to move whole device, very easy to use.The top of hold down gag 3 is pincerlike structures that are used for clamping work pieces 5 that are " L " type, when the assembling car body, only the edge of the workpiece 5 that needs need be strained inserts in the pincerlike structure of hold down gag 3, and rotation tensioning mechanism 2 just can be strained workpiece 5 by the opposite screw pair structure of rotation direction.The edge thickness of La Jin workpiece 5 is too thick if desired, can not insert in the pincerlike structure, also pincerlike structure can be placed on the workpiece 5, and the edge of workpiece 5 is hooked on the base of the pincerlike structure of utilization " L " type, and rotation tensioning mechanism 2 also can be with workpiece 5 tensions.
As mentioned above, given in conjunction with the accompanying drawings and embodiments scheme content can derive the similar techniques scheme.In every case be the content that does not break away from technical solutions of the utility model, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical solutions of the utility model according to technical spirit of the present utility model.