An auxiliary device for the vertical hoisting of large metallurgical rolls

Abstract

The present invention discloses an auxiliary device for the vertical hoisting of large metallurgical rolls. The auxiliary device includes a roll horizontal support mechanism and a roll commutation mechanism. The roll horizontal support mechanism is used for the support of the roll when it is placed horizontally and the installation before the position and attitude adjustment. The roll commutation mechanism realizes the change of the position and attitude from the horizontal direction to the vertical state during the hoisting of the roll through the contact and cooperation between the arc surfaces. Compared with the prior art, the present invention realizes the spatial position adjustment of the roll without damage, and at the same time ensures the stability and safety of the hoisting.

Description

Technical Field

[0001] The present invention belongs to the field of roll hoisting, and particularly relates to an auxiliary device for vertically hoisting large metallurgical rolls. Background Art

[0002] During the vertical machining or shrink-fitting hot installation process of large metallurgical rolls, the rolls need to be hoisted onto a vertical lathe or a hot installation station. During this process, the axis of the roll needs to be changed from a horizontal state to a vertical state. The main surfaces of the roll are all cylindrical surfaces, and the surfaces are the working surface and the bearing installation surface. Direct hoisting will cause surface damage. Therefore, it cannot be smoothly completed only by a crane, and a special hoisting tool needs to be designed. Through the hoisting tool, the roll can be smoothly transitioned from the horizontal axis state to the vertical axis state, ensuring that the spatial position adjustment is completed without damaging the roll; and avoiding the problem that if the roll axis is not in a vertical state during the shrink-fitting process, it will cause the roll sleeve and the roll core to be prematurely locked, resulting in the failure of the shrink-fitting and causing very large economic losses.

[0003] At the same time, due to the large weight, large length, and special shape of large metallurgical rolls, it is very difficult to accurately control the position and attitude of the rolls during vertical hoisting, posing a greater safety hazard to the personnel and equipment at the hoisting site. If a special roll vertical hoisting device and hoisting tool can be designed, it can not only improve the hoisting efficiency, stability, and safety during the hoisting process, but also have obvious engineering significance and application value. Summary of the Invention

[0004] The purpose of the present invention is to provide an auxiliary device for vertically hoisting large metallurgical rolls, which can achieve spatial position adjustment without damaging the large metallurgical rolls, and at the same time ensure the stability and safety of hoisting. The present invention respectively designs a roll horizontal support mechanism, hoisting tools on both sides of the roll, a roll position adjustment device, a roll limit device, and a sliding surface lubrication device, so as to achieve a smooth and safe transition of the roll from a horizontal position to a vertical position and hoisting.

[0005] The technical solution to realize the present invention is: an auxiliary device for vertically hoisting large metallurgical rolls, the auxiliary device includes a roll horizontal support mechanism and a roll commutation mechanism. The roll horizontal support mechanism is used for the support when the roll is horizontally placed and the installation before the position and attitude adjustment; the roll commutation mechanism realizes the change of the position and attitude from the horizontal direction to the vertical state during the hoisting process of the roll through the contact and cooperation between the arc surfaces.

[0006] Compared with the prior art, the present invention has the following remarkable advantages:

[0007] 1. Through the setting of the roll commutation mechanism, the present invention can achieve spatial position adjustment without damaging the roll.

[0008] 2. The design of the arc surfaces in each structural component of the present invention, in conjunction with the use of its crane, enables the smooth movement of the roll during the process from the horizontal position to the vertical position.

[0009] 3. The roll horizontal support mechanism disclosed in the present invention is used for the support of the roll when it is horizontally placed and for the installation before the position and attitude adjustment; at the same time, it protects the surface of the roll from damage.

[0010] 3. The auxiliary device for the vertical hoisting of the roll disclosed in the present invention ensures the stability and safety of the roll hoisting, saves manpower, and reduces the safety hazards to the personnel and equipment at the hoisting site. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the three-dimensional view of the present invention patent;

[0012] Figure 2 is the schematic diagram of the roll system support seat;

[0013] Figure 3 is the schematic diagram of the upright guide disk of the lower support seat;

[0014] Figure 4 is the schematic diagram of the trapezoidal slideway;

[0015] Figure 5 is the schematic diagram of the hydraulic control mechanism;

[0016] Figure 6 is the schematic diagram of the limit pin;

[0017] Figure 7 is the schematic diagram of the guide groove;

[0018] Figure 8 is the schematic diagram of the support shaft;

[0019] Figure 9 is the schematic diagram of the bearing seat;

[0020] Figure 10 is the schematic diagram of the rolling bearing;

[0021] Figure 11 is the schematic diagram of the elastic retaining ring;

[0022] Figure 12 is the schematic diagram of the roll;

[0023] Figure 13 is the schematic diagram of the upper lifting disk part;

[0024] Figure 14 is the schematic diagram of the support block;

[0025] Figure 15 is the schematic diagram of the fixing block;

[0026] Figure 16 Schematic diagram of the lower support base;

[0027] Figure 17 For the limit pin to pop out after the roll is erected;

[0028] Figure 18 Schematic diagram of the roll erected after the operation of the present invention;

[0029] Figure 19 Schematic diagram of adjusting the position of the bearing block through the holes on the guide groove.

[0030] Reference numerals:

[0031] 1 - Hydraulic control mechanism, 2 - Trapezoidal slideway, 3 - Vertical guide disc of the lower support base, 4 - Support block, 5 - Lower support base, 6 - Bearing block, 7 - Support shaft, 8 - Roll, 9 - Upper lifting disc, 10 - Fixed block, 11 - Roll system support base, 12 - Guide groove. Detailed implementation manners

[0032] The following combines the attached Figure 1-19 and specific embodiments to further introduce the present invention.

[0033] As Figure 1 shown: The present invention is an auxiliary device for the vertical hoisting of large metallurgical rolls, which can achieve the spatial position adjustment without damaging the rolls. Generally, when the maximum diameter of a roll exceeds 1000 mm or the weight exceeds 20 t, it can be defined as a large roll. Due to the large volume and weight of such rolls, there are usually difficulties in hoisting. The specific structure includes: a roll horizontal support mechanism and a roll commutation mechanism; the roll horizontal support mechanism is used for the support of the roll 8 when it is horizontally placed and for facilitating the installation before the position and attitude adjustment. The roll commutation mechanism realizes the change of the position and attitude from the horizontal axis direction to the vertical axis state during the hoisting of the roll through the contact fit between the arc surfaces;

[0034] The roll horizontal support mechanism includes a roll system support base 11 and a support shaft mechanism; the roll system support base 11 is fixedly installed on the ground, and two groups of trapezoidal chutes are symmetrically machined on the upper surface, and fine grooves are machined on the upper surface of the trapezoidal chutes for subsequent addition of lubricating grease. The trapezoidal chutes on the upper surface of the roll system support base 11 are used for installing the guide groove.

[0035] As Figure 2 shown, a first arc surface is arranged at the end of the surface of the roll system support base 11 perpendicular to the chute direction.

[0036] Among them, the support shaft mechanism includes: a guide groove 12, a bearing block 6 and a support shaft 7;

[0037] As Figure 7As shown in the figure, a sliding groove is provided at the bottom of the guide groove 12, which is fitted with the sliding groove of the roll system support seat 11 to achieve a sliding connection between the two.

[0038] There are two sets of guide grooves 12;

[0039] Above the guide groove 12, a row of round holes are equidistantly arranged for fixedly installing the bearing seat 6 through screws. The support shaft 7 is rotatably installed with the bearing seat 6 through a rolling bearing and is limited by an elastic retaining ring; an arc-shaped rotating body structure is arranged in the middle of the support shaft 7 for better fitting with the outer cylindrical surface of the roll 8.

[0040] Preferably, the number of bearing seats 6 provided on each guide groove 12 is ≥ 2;

[0041] At the same time, according to the rolls 8 of different lengths, the distance between the bearing seats 6 on each guide groove 12 is adjusted by installing the bearing seats 6 in different round holes on the guide groove 12.

[0042] The roll commutation mechanism includes a pose adjustment mechanism and a guide disk limiting mechanism;

[0043] Among them, the pose adjustment mechanism includes a lower support upright guide disk 3, a support block 4 and a lower support seat 5; the lower support upright guide disk 3 is installed at the end of the first arc surface of the roll system support seat 11; the support block 4 is slidably installed on the lower support upright guide disk 3. In the horizontal state, the bottom of the lower support seat 5 is movably fitted on the arc surface of the lower support upright guide disk 3, and the outer circular wall of the lower support seat 5 is supported by the support block 4.

[0044] A second arc surface is recessed inward on the lower support upright guide disk 3, and the radius of curvature of the second arc surface is the same as that of the first arc surface;

[0045] A pair of trapezoidal convex grooves are symmetrically arranged at a position near the bottom on the second arc surface of the lower support upright guide disk 3 for installing the support block 4 and limiting the support block 4 to slide along the bottom curved surface; and the cross-sectional shape of the convex groove is high at both ends and low in the middle, so that the support block 4 will not move left and right under the action of gravity, making the support more stable.

[0046] On the symmetry axis of the lower support upright guide disk 3, a hole is provided at the bottom of the second arc surface, and a limit pin is installed in the hole through a spring; during the hoisting process, the fifth arc surface at the bottom of the lower support seat 5 presses the limit pin to temporarily press the limit pin back into the hole. After being completely erected, the hole at the bottom of the lower support seat 5 is located above the limit pin. At this time, since there is no restriction above, the limit pin will automatically return to the previous position and be stuck at the round hole at the bottom of the lower support seat 5 to limit and maintain the erected state of the lower support seat 5.

[0047] The bottom of the support block 4 is machined into a third arc surface, and the curvature radius of the third arc surface is the same as that of the first arc surface;

[0048] A trapezoidal groove is machined on the third arc surface of the support block 4 for mating installation with the trapezoidal protrusion on the vertical guide disc 3 of the lower support seat;

[0049] The top of the support block 4 is provided with a fourth arc surface for supporting the lower support seat 5; the curvature radius of the fourth arc surface is the same as that of the outer circular wall of the lower support seat 5.

[0050] A handle is provided on the support block 4 to increase the distance between the two support blocks 4 during the hoisting process so that the distance between the two support blocks 4 can allow the lower support seat 5 to pass through.

[0051] There are two groups of support blocks 4, and the structures of the two groups of support blocks 4 are axisymmetric.

[0052] A fifth arc surface is machined at the bottom of the lower support seat 5, and the fifth arc surface is in contact and cooperation with the first arc surface, and their curvature radii are the same.

[0053] Four hooks are provided on the lower support seat 5 and are evenly distributed along the circumferential direction for connecting the steel wire rope during hoisting.

[0054] A support installation hole for the roll 8 is provided in the middle of the lower support seat 5 for supporting and installing the roll 8.

[0055] The guide disc limiting mechanism includes: a hydraulic control mechanism 1 and a trapezoidal slideway 2; the trapezoidal slideway 2 is fixedly installed on the ground, and a trapezoidal groove is provided at the bottom of the vertical guide disc 3 of the lower support seat for sliding installation with the trapezoidal slideway 2 and realizing the limit perpendicular to the length direction of the trapezoidal slideway 2; the hydraulic control mechanism 1 is hinged on the ground, and one end of the hydraulic rod in the hydraulic control mechanism 1 is hinged to the rear of the vertical guide disc 3 of the lower support seat, and the hydraulic rod is controlled by the hydraulic cylinder so that the vertical guide disc 3 of the lower support seat can perform reciprocating linear motion on the trapezoidal slideway 2.

[0056] The trapezoidal slideway 2 is fixed to the ground, and small grooves are machined on its upper surface for facilitating lubrication during subsequent work.

[0057] The auxiliary device for the vertical hoisting of large metallurgical rolls further includes: an upper lifting disc 9 and a fixing block 10; the upper lifting disc 9 is installed at one end of the roll 8 away from the lower support seat 5,

[0058] The installation method of the upper lifting disc 9 is: after the upper lifting disc 9 is sleeved on the end of the roll 8, it is rotated by an angle, and due to the matching of their own shapes, the fixing block 10 is filled in the gap to prevent the circumferential movement between the two from causing loosening of the fit.

[0059] The surface of the upper lifting plate 9 is provided with 4 hook-shaped bends, which are evenly distributed along the circumferential direction for connecting the steel wire rope during lifting.

[0060] An auxiliary device for the vertical lifting of large metallurgical rolls disclosed by the present invention has the following working process for the lifting of large metallurgical rolls:

[0061] When a large roll 8 needs to be lifted, first, the lower support base vertical guide plate 3 is docked with the curved surface of the roll system support base 11, the support block 4 is installed on the lower support base vertical guide plate 3, the lower support base 5 is transported to the support block 4 through the support shaft 7, and the bottom of the lower support base 5 is in contact and cooperation with the curved surface of the lower support base guide plate 3. After one end of the roll 8 is sleeved into the upper lifting plate 9, the other end is transported into the lower support base 5 through the support shaft 7. The two support blocks are pulled in opposite directions through the handle on the support block 4, leaving enough gaps in the middle for the roll to stand up. The steel wire rope is passed through two pairs of hook-shaped bends and then lifted by a hoist. During this process, the fifth arc surface at the bottom of the lower support base 5 closely adheres to the second arc surface of the lower support base vertical guide plate 3 and is lubricated with grease to reduce friction. When the roll 8 and the lower support base 5 stand up, they will push against the guide groove 12 and move backward. When the roll 8 and the lower support base 5 are completely upright, the limit pin will pop out and be stuck at the round hole at the bottom of the lower support base 5 to play a limiting role.

[0062] The above shows and describes the basic principles, main features, and advantages of this invention. This invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of this invention. Without departing from the spirit and scope of this invention, this invention will have various changes and improvements, and these changes and improvements all fall within the scope of this invention claimed. The scope of protection claimed for this invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for vertically hoisting large metallurgical rolls, characterized in that: The auxiliary device includes a roller horizontal support mechanism and a roller reversing mechanism. The roller horizontal support mechanism is used to support the roller when it is placed horizontally and to install it before adjusting its position and posture. The roller reversing mechanism realizes the change of posture from horizontal to vertical during the roller hoisting process through the contact and cooperation between the arc surfaces. The horizontal support mechanism of the rolling roller includes a roller support seat and a support shaft mechanism. The roller support seat is fixedly installed on the ground, the support shaft mechanism and the roller support seat are slidably installed, and a first arc surface is arranged on the end of the surface of the roller support seat perpendicular to the direction of the slide groove; The roller reversing mechanism includes a posture adjustment mechanism and a guide plate limiting mechanism; the posture adjustment mechanism is used to assist in adjusting the posture when hoisting the roller; the guide plate limiting mechanism is used to limit the position of the upright guide plate of the lower support seat in the posture adjustment mechanism; The posture adjustment mechanism includes a lower support seat upright guide plate, a support block and a lower support seat; the lower support seat upright guide plate is installed at the end of the roller system support seat; two groups of support blocks are provided, and the two groups of support blocks are axisymmetric structures; the support block is slidably installed on the lower support seat upright guide plate; the bottom of the lower support seat is in contact with the lower support seat upright guide plate, and the outer circular wall of the lower support seat is supported by the support block; A second arc surface is arranged on the upright guide plate of the lower support seat, a fifth arc surface is arranged on the bottom of the lower support seat, and a third arc surface is processed on the bottom of the support block; the first arc surface, the third arc surface, the second arc surface and the fifth arc surface have the same curvature radius; the third arc surface, the second arc surface and the fifth arc surface are in contact and fit; A pair of trapezoidal convex grooves are symmetrically arranged on the second arc surface of the upright guide plate of the lower support seat, which are used to install the support block and limit the support block to slide along the bottom curved surface; and the cross-sectional shape of the convex groove is high at both ends and low in the middle, so that the support block will not move along the trapezoidal convex groove under the action of gravity; a hole is arranged at the bottom of the second arc surface of the upright guide plate of the lower support seat and on the axis of symmetry of the upright guide plate of the lower support seat, and a limit pin is installed in the hole through a spring, which is used to limit and maintain the upright state of the lower support seat.

2. The auxiliary device for vertically hoisting large metallurgical rolls according to claim 1, characterized in that: The support shaft mechanism comprises: a guide groove, a bearing seat and a support shaft, wherein the guide groove sliding roller is on the support seat; the bearing seat is fixedly connected to the guide groove, and the support shaft is rotationally connected to the bearing seat via a rolling bearing.

3. The auxiliary device for vertically hoisting large metallurgical rolls according to claim 1, characterized in that: A fourth arc surface is provided on the top of the support block for supporting the lower support seat; the curvature radius of the fourth arc surface is the same as the curvature radius of the outer circular wall of the lower support seat; a handle is provided on the support block for pulling the support block in the sliding direction during lifting.

4. The auxiliary device for vertically hoisting large metallurgical rolls according to claim 1, characterized in that: Four hooks are arranged on the lower support seat, evenly distributed along the circumferential direction, for connecting the wire rope during lifting; a supporting installation hole for the roller is opened in the middle of the lower support seat for supporting and installing the roller.

5. The auxiliary device for vertically hoisting large metallurgical rolls according to claim 1, characterized in that: The device also includes an upper lifting plate, which is installed at one end of the roller away from the lower support seat and is used to connect with the hoisting machine when the roller is lifted.

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