A kind of device of changing rolling mill press head frame and pressure head
Technical field
The utility model relates to a kind of device of changing rolling mill press head frame and pressure head, belongs to strip mill maintenance of equipment instrument technical field.
Background technology
At present, while changing the operation of strip mill pressure head frame and single pressure head on the roll line of middle broadband, without specific purpose tool, can only rely on overhead traveling crane operation.In actual job, find, current operation has the following disadvantages: first, change pressure frame narrow space, maintenance activity is had to certain restriction; Secondly, utilize overhead traveling crane lifting to have certain potential safety hazard; Have, also need whole pressure frame to pull down while changing single pressure head, need to take out roller, want down time to change eight hours above time, impact is produced.In addition, in operation, also can cause labor strength large, and industrial accident easily occurs.In view of current replacing pressure frame and pressure head exist these deficiencies, be necessary the replacing rolling mill press head frame of design specialized and the instrument of pressure head.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of device of changing rolling mill press head frame and pressure head, this device can support safely and reliably, change quickly and easily rolling mill press head frame and pressure head, and can effectively reduce labor strength and guarantee safety in production.
The technical scheme solving the problems of the technologies described above is:
A kind of device of changing rolling mill press head frame and pressure head, its formation comprises lower support roll of rolling mill, base, hoistable platform, screw jack, positioning guide column, roll change buggy, base is positioned at lower support roll of rolling mill upper surface, screw jack is installed by base central authorities, positioning guide column is installed respectively in the both sides of base, the bottom surface of hoistable platform is connected support with positioning guide column by screw jack, roll change buggy is positioned at the outside of lower support roll of rolling mill and hoistable platform, and the plane after the upper plane of roll change buggy and hoistable platform landing flushes.
The device of above-mentioned replacing rolling mill press head frame and pressure head, it also has pressure head clamp, hanger, counterweight and connecting rod, pressure head clamp horizontal positioned, one end of pressure head clamp is connected with one end of pressure head by bolt, the other end of pressure head clamp is connected with one end of connecting rod, and the other end of connecting rod is provided with counterweight, and hanger is arranged at connecting rod top, hanger and overhead traveling crane major-minor hook match, and counterweight and pressure head be take hanger and balanced each other as fulcrum.
The beneficial effects of the utility model are:
The utility model is when changing rolling mill press head frame, by jack, drive hoistable platform to move up and down, fall after pressure head frame, by roll change buggy, extracting pressure head frame out frame transports, the restriction that while not only having eliminated because of maintenance, overhead traveling crane anxiety is brought, has also avoided personnel to enter operation in narrow space and the contingent potential safety hazard of overhead traveling crane mismate; The utility model, when the single pressure head of dismounting, utilizes pressure head clamp coupler link, overhead traveling crane operation, need not take out roller again, originally the activity duration of eight hours, only needs 40 minutes now.The utility model is simple in structure, easy to operate, can effectively increase work efficiency, and has not only greatly alleviated workman's labour intensity, has avoided the generation of industrial accident simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model is changed pressure head frame;
Fig. 2 is the structural representation that the utility model is changed pressure head.
In figure, mark is as follows: lower support roll of rolling mill 1, base 2, hoistable platform 3, screw jack 4, positioning guide column 5, roll change buggy 6, depress leading screw 7, pressure head 8, pressure head clamp 9, bolt 10, connecting rod 11, hanger 12, counterweight 13.Pressure head 1, clamp 2, hanger 3, counterweight 4 and connecting rod 5; Lower support roll of rolling mill 6, base 7, hoistable platform 8, screw jack 9, positioning guide column 10.
The specific embodiment
The utility model comprises lower support roll of rolling mill 1, base 2, hoistable platform 3, screw jack 4, positioning guide column 5, roll change buggy 6, pressure head clamp 9, bolt 10, connecting rod 11, hanger 12, counterweight 13.
In figure, show, base 2 is positioned at lower support roll of rolling mill 1 upper surface, screw jack 4 is installed by base 2 central authorities, positioning guide column 5 is installed respectively in the both sides of screw jack 4, the bottom surface of hoistable platform 3 is connected support by screw jack 4 with positioning guide column 5, and screw jack 4 can promote hoistable platform 3 and slide up and down along positioning guide column 5.
In figure, show, roll change buggy 6 is positioned at the outside of lower support roll of rolling mill 1 and hoistable platform 3, and the plane after the upper plane of roll change buggy 6 and hoistable platform 3 landing flushes, for transporting the pressure head frame dropping on hoistable platform 3.
In figure, show, pressure head clamp 9 horizontal positioned, one end of pressure head clamp 9 is connected with one end of pressure head 8 by bolt 10, the other end of pressure head clamp 9 is connected with one end of connecting rod 11, the other end of connecting rod 11 is provided with counterweight 13, hanger 12 is arranged at connecting rod 11 tops, and hanger 12 matches with overhead traveling crane major-minor hook.Counterweight 13 weight are slightly larger than the weight of pressure head 8, by the hanger 12 of overhead traveling crane hook above, are fulcrum, and hitch equilibrium pressure 8 position, sky below, are positioned on fulcrum center of gravity.
The course of work of the present utility model is as follows:
While changing pressure head frame, base 2 and hoistable platform 3 are placed on lower support roll of rolling mill 1, utilize screw jack 4 that hoistable platform 3 is raised to pressure head 8 belows, remove the clamp of pressure head 8.Operation screw jack 4 slowly falls pressure head frame, after depressing leading screw 7 and departing from completely, utilizes roll change buggy 6 by pressure head frame extraction frame, handling to be driven a vehicle.Install by anti-operation in tandem.
While changing pressure head 8, pressure head clamp 9 is connected with pressure head 8 use bolts 10, by overhead traveling crane major-minor hook block, hangs hanger 12 complex equilibriums, promote and depress after leading screw 7, pressure head 8 is extracted out from pressure head frame, complete dismounting.More renew pressure head 8 by above anti-sequential analysis.