Low-vibration deformation-resistant rolling mill stand

Abstract

The utility model provides a low-vibration deformation-resistant rolling mill stand, which belongs to the technical field of metallurgical equipment, and comprises a rolling mill stand, four groups of prestressed steel pull rods, a support frame, a connecting seat, a telescopic spring, a shock absorption sleeve and a support, and is characterized in that the four groups of prestressed steel pull rods are arranged at the end corners of the upper end and the lower end of the inner side of the rolling mill stand; a closed-loop stress frame is formed, the closed-loop stress frame has certain bearing capacity and deformation capacity through stretching and fixing, an eccentric compression effect is generated in the rolling mill stand, the external load effect is reduced, and tensile deformation caused by rolling force can be compensated. The X-shaped cross supporting structure of the supporting frame can stretch, retract, open and close up and down along with vibration and impact of the machine frame, the supporting feet at the lower end of the supporting frame can move in the connecting base sliding grooves in the bottom and extrude the telescopic springs on the left side and the right side in the connecting base outwards, and therefore the rigidity requirement and impact load distribution are balanced, and stress concentration is avoided.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, and in particular to a low-vibration, deformation-resistant rolling mill stand. Background Technology

[0002] A rolling mill is a piece of equipment used to roll metal. The mill stand is the largest and heaviest component in the entire mill stand, accounting for 45-50% of its weight. The mill stand bears all the rolling forces, horizontal tensions, inertial impacts, and balancing forces from the roll balancing device acting on the rolls. The deformation of the mill stand under these forces directly affects the dimensional accuracy of the rolled workpiece.

[0003] Due to insufficient vibration suppression of the existing rolling mill stand, rolling force fluctuations cause stand resonance and vibration acceleration, which affects the surface quality of the plate. The stand columns have high deflection under rolling load, resulting in excessive parallelism of the roll axis, which reduces rolling accuracy. This leads to roll swaying and uneven plate thickness caused by vibration and deformation of the rolling mill stand, and will shorten the life of the equipment in the long run.

[0004] Therefore, this application provides a low-vibration, deformation-resistant rolling mill stand to meet the requirements. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose a low-vibration, deformation-resistant rolling mill stand.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A low-vibration, anti-deformation rolling mill stand includes: a rolling mill stand, a prestressed steel tie rod, a support frame, a connecting seat, a telescopic spring, a damping sleeve, and a support. The bottom end of the rolling mill stand has a rolling mill base plate mounting surface. The inner side of the rolling mill stand has a support roll liner mounting surface. A balance cylinder mounting surface is located in the middle of the side of the support roll liner mounting surface on the rolling mill stand. A prestressed steel tie rod is mounted on the side of the rolling mill stand located on the support roll liner mounting surface. A first anchoring plate is mounted at one end of the prestressed steel tie rod, and a second anchoring plate is mounted at the other end. A damper is mounted in the middle section of the prestressed steel tie rod. A support frame is mounted at the bottom of the rolling mill stand. A connecting seat is mounted at the bottom of the support frame. A telescopic spring is mounted inside the connecting seat. A damping sleeve is vertically mounted at the bottom of the connecting seat, and a support is mounted at the other end of the damping sleeve.

[0008] Preferably, the prestressed steel tie rods are provided in four sets, and the four sets of prestressed steel tie rods are respectively installed vertically at the upper and lower ends of the mounting surface of the balance cylinder.

[0009] Preferably, the first group of anchor pads of the prestressed steel pull rod abut against the surfaces on the top and bottom of the balance cylinder mounting surface, and the second group of anchor pads of the prestressed steel pull rod abut against the upper and lower ends of the inner cavity of the rolling mill stand respectively.

[0010] Preferably, the dampers of the prestressed steel pull rod are arranged at the end corners of the upper and lower ends of the inner cavity of the rolling mill stand.

[0011] Preferably, the support frame is arranged in an X-shaped cross, two supports of the support frame are connected with the end corners of the rolling mill bottom plate mounting surface respectively, and a rotating shaft is arranged in the middle of the support frame.

[0012] Preferably, the connecting seat is in a rectangular strip shape, a rectangular-shaped sliding groove is arranged on the inner side of the connecting seat, and the lower ends of the two supports of the support frame are mounted on the left and right ends of the sliding groove of the connecting seat.

[0013] Preferably, the telescopic spring is arranged in a transverse direction, and the other end of the telescopic spring abuts against the side surface of the two supports of the support frame.

[0014] Preferably, the support base is parallel to the connecting seat through the damping sleeve, and the support base is made of rubber material.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] In the above scheme, the prestressed steel pull rod is arranged, four groups of prestressed steel pull rods are arranged at the end corners of the upper and lower ends of the inner side of the rolling mill stand, a closed loop stress frame is formed, the tensile deformation caused by the rolling force can be compensated, it has certain bearing capacity and deformation capacity through stretching and fixing, due to the joint action of prestress and new external load, the axial tension is generated in the pull rod, the force is transmitted to the rolling mill stand through the eccentric anchoring of the rod end from the balance cylinder mounting surface of the rolling mill stand, the eccentric compression is generated in the rolling mill stand, the bending moment generated by part of the external load is overcome, the external load effect is reduced, and the bending resistance of the stand is improved, at the same time, due to the pressure effect of the pull rod transmitted to the stand, the shear capacity of the inclined section is improved, and the anti-vibration performance of the rolling mill stand structure can be improved.

[0017] In the above scheme, the X-shaped cross support frame is additionally arranged at the middle of the bottom of the rolling mill stand, the X-shaped cross support structure of the support frame can be stretched and contracted up and down with the vibration impact of the stand, the supporting legs at the lower end of the support frame can move in the connecting seat sliding groove at the bottom and extrude the telescopic springs on the left and right sides inside the connecting seat, so that the rigid demand and impact load distribution are balanced, and stress concentration is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable a person skilled in the relevant art to make and use the present disclosure.

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the specific connection structure schematic view of the prestressed steel pull rod of the utility model;

[0021] Figure 3 It is the specific connection structure schematic view of the support frame and the connecting seat of the utility model;

[0022] Figure 4 It is the specific structure schematic view of the connecting seat of the utility model.

[0023] [Reference signs]

[0024] 1-rolling mill stand; 2-prestressed steel pull rod; 3-support frame; 4-connecting seat; 5-elastic spring; 6-damping sleeve; 7-support; 101-rolling mill bottom plate mounting surface; 102-supporting roller lining plate mounting surface; 103-balance cylinder mounting surface; 201-first anchoring pad plate; 202-second anchoring pad plate; 203-damper.

[0025] As shown in the drawings, in order to clearly realize the structure of the embodiments of the utility model, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the utility model in the specific structure, device and environment, according to the specific needs, the person skilled in the art can adjust or modify these devices and environment, and the adjustment or modification still includes in the range of the appended claims. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the scope of protection of the utility model.

[0027] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] As Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model discloses a kind of low-vibration deformation-resistant rolling mill stand, the embodiment of the utility model provides, including: rolling mill stand 1, prestressed steel pull rod 2, support frame 3, connecting seat 4, telescopic spring 5, shock-absorbing sleeve 6 and support 7, the bottom end of rolling mill stand 1 is provided with rolling mill bottom plate mounting surface 101, the inner side of rolling mill stand 1 is provided with support roll lining plate mounting surface 102, the side surface of rolling mill stand 1 at support roll lining plate mounting surface 102 is provided with balance cylinder mounting surface 103, prestressed steel pull rod 2 is installed at the side surface of rolling mill stand 1 at support roll lining plate mounting surface 102, the first anchoring pad plate 201 is installed at the one end of the pull rod of prestressed steel pull rod 2, the second anchoring pad plate 202 is installed at the other end of the pull rod of prestressed steel pull rod 2, damper 203 is installed at the middle section of the pull rod of prestressed steel pull rod 2, support frame 3 is installed at the bottom of rolling mill stand 1, connecting seat 4 is installed at the bottom of support frame 3, telescopic spring 5 is installed at the inner side of connecting seat 4, shock-absorbing sleeve 6 is vertically installed at the bottom of connecting seat 4, support 7 is installed at the other end of shock-absorbing sleeve 6.

[0029] In the embodiment, prestressed steel pull rod 2 is provided with four groups, and the four groups of prestressed steel pull rod 2 are vertically installed at the upper and lower ends of balance cylinder mounting surface 103, and the four groups of prestressed steel pull rod 2 are arranged at the end corners at the upper and lower ends of the inner side of rolling mill stand 1, forming a closed loop stress frame, which can compensate the tensile deformation caused by rolling force, and prestressed steel pull rod 2 can be supported at the upper and lower ends of balance cylinder mounting surface 103, which has certain bearing capacity and deformation capacity by stretching and fixing, and due to the combined action of prestress and additional external load, axial tension is generated in the pull rod, which is transmitted to the component through eccentric anchoring at the end of the rod, and eccentric compression is generated in the component, which overcomes the bending moment generated by part of the external load, reduces the external load effect, and thus improves the bending resistance of the component.

[0030] In the embodiment, the first group of anchoring pads 201 of the prestressed steel rod 2 abut against the surfaces on the top and bottom of the balance cylinder mounting surface 103, and the second group of anchoring pads 202 of the prestressed steel rod 2 abut against the upper and lower ends of the inner cavity of the rolling mill stand 1 respectively, so that the prestressed steel rod 2 at the upper and lower ends of the inner cavity of the rolling mill stand 1 can transmit the eccentric anchoring of the rod end to the rolling mill stand 1 through the second anchoring pads 202.

[0031] In the embodiment, the dampers 203 of the prestressed steel rod 2 are arranged at the corner of the upper and lower ends of the inner cavity of the rolling mill stand 1, so as to facilitate adjustment of the damping force of the dampers 203 at the corner of the upper and lower ends of the inner cavity of the rolling mill stand 1.

[0032] In the embodiment, the support frame 3 is arranged in an “X” shape, two supports of the support frame 3 are connected with the corners of the rolling mill bottom plate mounting surface 101 respectively, and a rotating shaft is arranged in the middle of the support frame 3, so that the rotating shaft arranged in the middle of the support frame 3 enables the support frame 3 to be opened and closed up and down, and the support frame 3 can move along with the vibration and impact of the stand.

[0033] In the embodiment, the connecting seat 4 is in a rectangular strip shape, a rectangular chute is arranged on the inner side of the connecting seat 4, and the lower ends of the two supports of the support frame 3 are mounted on the left and right ends of the chute of the connecting seat 4, so that when the support frame 3 is opened and closed up and down along with the vibration and impact of the stand, the support frame 3 can move in the chute of the connecting seat 4 and extrude the compression spring 5 outward.

[0034] In the embodiment, the telescopic spring 5 is arranged horizontally, and the other end of the telescopic spring 5 abuts against the side surface of the two supports of the support frame 3, so that the telescopic spring 5 on the side surface of the support frame 3 can provide side support for the support frame 3, and the impact force can be buffered by extruding the telescopic spring 5 when the impact occurs.

[0035] In the embodiment, the support 7 is parallel to the connecting seat 4 through the damping sleeve 6, and the support 7 is made of rubber material, so that the impact load is guided to the rolling mill base through the damping sleeve 6 and the support 7, and stress concentration is avoided.

[0036] The utility model covers any alternative, modification, equivalent method and scheme which is made on the essence and range of the utility model. In order to make the public have the thorough understanding of the utility model, the specific details are explained in the following preferred embodiment of the utility model, and the utility model can also be completely understood without the description of these details for the person skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the utility model, the well-known method, process, flow, element and circuit etc. are not explained in detail.

[0037] The above merely is preferred implementation manner of the present application, it should be pointed out, for ordinary skilled person in the technical field, on the premise of not departing from the principle of the present application, can make a number of improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the present application.

Claims

1. A low-vibration, deformation-resistant rolling mill stand, characterized in that, include: The rolling mill frame (1), prestressed steel tie rod (2), support frame (3), connecting seat (4), telescopic spring (5), shock-absorbing sleeve (6), and support (7) are provided. The bottom end of the rolling mill frame (1) is provided with a rolling mill base plate mounting surface (101). The inner side of the rolling mill frame (1) is provided with a support roll liner mounting surface (102). The middle of the side of the rolling mill frame (1) located on the support roll liner mounting surface (102) is provided with a balance cylinder mounting surface (103). The side of the rolling mill frame (1) located on the support roll liner mounting surface (102) is provided with a prestressed steel tie rod (2). A first anchor plate (201) is installed at one end of the prestressed steel tie rod (2), a second anchor plate (202) is installed at the other end of the tie rod, a damper (203) is installed in the middle section of the tie rod, a support frame (3) is installed at the bottom of the rolling mill frame (1), a connecting seat (4) is installed at the bottom of the support frame (3), a telescopic spring (5) is installed on the inner side of the connecting seat (4), a shock-absorbing sleeve (6) is installed vertically at the bottom of the connecting seat (4), and a support (7) is installed at the other end of the shock-absorbing sleeve (6).

2. The low-vibration, deformation-resistant rolling mill stand according to claim 1, characterized in that: The prestressed steel tie rod (2) is provided in four sets, and the four sets of prestressed steel tie rods (2) are respectively installed vertically at the upper and lower ends of the balance cylinder mounting surface (103).

3. The low-vibration, anti-deformation rolling mill stand according to claim 1, characterized in that: One set of first anchor plates (201) of the prestressed steel tie rod (2) abuts against the top and bottom surfaces of the balance cylinder mounting surface (103), and another set of second anchor plates (202) of the prestressed steel tie rod (2) abuts against the upper and lower ends of the inner cavity of the rolling mill frame (1).

4. The low-vibration, anti-deformation rolling mill stand according to claim 1, characterized in that: The damper (203) of the prestressed steel tie rod (2) is arranged at the upper and lower corners of the inner cavity of the rolling mill stand (1).

5. The low-vibration, deformation-resistant rolling mill stand according to claim 1, characterized in that: The support frame (3) is arranged in an "X" shape. The two supports of the support frame (3) are connected to the end corners of the rolling mill base plate mounting surface (101) respectively, and a rotating shaft is provided in the middle of the support frame (3).

6. The low-vibration, deformation-resistant rolling mill stand according to claim 5, characterized in that: The connecting seat (4) is rectangular and has a rectangular groove on its inner side. The lower ends of the two supports of the support frame (3) are installed on the left and right ends of the groove of the connecting seat (4).

7. The low-vibration, deformation-resistant rolling mill stand according to claim 1, characterized in that: The telescopic spring (5) is arranged horizontally, and the other end of the telescopic spring (5) abuts against the sides of the two supports of the support frame (3).

8. The low-vibration, deformation-resistant rolling mill stand according to claim 1, characterized in that: The support (7) is parallel to the connecting seat (4) through the shock-absorbing sleeve (6), and the support (7) is made of rubber.

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