CN219408870U - Heavy H-shaped steel straightening roll sheet assembly lifting appliance - Google Patents

Abstract

The utility model discloses an assembly lifting appliance for a heavy H-shaped steel straightening roll sheet, and belongs to the technical field of straightening roll assembly. The lifting appliance comprises lifting rods and lifting beams, wherein the lifting rods are connected with the lifting beams through traction pieces, two lifting rods are arranged, a first groove part is arranged in the middle of each lifting rod, a second groove part is arranged in the middle of each first groove part, and the two end parts of each first groove part and the two end parts of each second groove part are inclined planes. The straightening roller sheet assembling lifting appliance can be used for assembling and disassembling the straightening roller sheet and the gasket above the straightening roller sheet at one time, so that the labor intensity of operators is reduced, and meanwhile, the lifting safety of the straightening roller sheet and the gasket and the assembling efficiency of the straightening roller are improved.

Description

Heavy H-shaped steel straightening roll sheet assembly lifting appliance

Technical Field

The utility model belongs to the technical field of straightening roll assembly, and particularly relates to a lifting appliance for assembling a heavy H-shaped steel straightening roll sheet.

Background

The straightening process of the heavy H-shaped steel production line is an important production process of the heavy H-shaped steel production line, and a set of straightening rollers of the heavy H-shaped steel production line which is generally designed consists of a plurality of roller sets, wherein each set of straightening rollers is symmetrically assembled by an outer side gasket and an inner side gasket. And the straightening roll set needs to be changed with the straightening roll sheet every time the specification of the straightening roll is changed, and meanwhile, the inner side gasket, the middle gasket and the outer side gasket are all adjusted.

The existing straightening roller is disassembled and assembled on a straightening roller disassembling and assembling machine, and a taper hole at the lower end of a shaft sleeve is placed on a positioning taper seat of the disassembling and assembling machine and is fixed by a locking clamp; and then the operation of assembling and disassembling the straightening roller is carried out by adopting the magnetic chuck. In order to maintain balance of lifting of the straightening roll sheet, three permanent magnet suckers are generally adopted to lift the straightening roll sheet, the permanent magnet suckers are required to be pressed and loosened each time of lifting, and labor intensity of operators is high. In addition, the straightening roller sheet and the gasket are possibly larger than the weight of the straightening roller gasket due to the fact that the magnetic attraction force is larger than the weight of the straightening roller gasket in the process of disassembling and lifting, the magnetic force is conducted to the gasket below, and the magnetically attracted lower-layer gasket is possibly dropped in the air in the lifting process due to the fact that the magnetic attraction force is unstable, so that the potential safety hazard is large.

Through searching, the application of Chinese patent application number 201610608213.1 discloses a lifting appliance special for disassembling a straightening roller sheet of a rolling mill. This application includes "T" type support frame, "C" type counter-force pole and eccentric distance hanging claw, "T" type support frame includes fixed connection's vertical board and horizontal plate, vertical board is the arc, and the outside of vertical board is fixed with two otic placodes, "C" type counter-force pole is articulated with "T" type support frame through the otic placode, "C" type counter-force pole's lower extreme is not less than the lower extreme of vertical board, eccentric distance hanging claw is connected with "C" type counter-force pole's top is articulated, and the articulated position of eccentric distance hanging claw and "C" type counter-force pole deviates from the central point of eccentric distance hanging claw, the upper end of eccentric distance hanging claw is equipped with the through-hole that is used for hanging. The application can realize the lifting work among the straightening roll sheets of the small-spacing roll, so that the labor intensity is reduced. But the stability of the spreader of this application during handling is to be further improved.

Disclosure of Invention

1. Problems to be solved

Aiming at the problems of high labor intensity and poor safety of the existing straightening roller in disassembly and assembly work, the utility model provides a lifting appliance for assembling a heavy H-shaped steel straightening roller sheet. By adopting the technical scheme of the utility model, the straightening roll sheet and the gasket above the straightening roll sheet can be disassembled at one time, so that the labor intensity of operators is reduced, and the lifting safety of the straightening roll sheet and the gasket and the assembly efficiency of the straightening roll are improved.

2. Technical proposal

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model relates to an assembly lifting appliance for a heavy H-shaped steel straightening roll sheet, which comprises lifting rods and lifting beams, wherein the lifting rods and the lifting beams are connected through traction pieces, two lifting rods are arranged, a first groove part is arranged in the middle of each lifting rod, two end faces of each first groove part are inclined planes, the whole first groove part is in a tapered horn mouth shape, and the section of each first groove part is in an isosceles trapezoid shape.

Further, a second groove part is arranged in the middle of the first groove part, and two end faces of the second groove part are inclined planes.

Further, the length of the first groove part is smaller than the outer diameter of the straightening roll sheet and larger than the outer diameter of the straightening roll sheet; the opening depth is larger than the maximum arc height of the peripheral wall of the straightening roller sheet.

Further, the second groove part is provided with a depth greater than 2mm.

Further, the inclined planes of the first groove part and the second groove part are 40-50 degrees.

Further, the distance between the two suspenders is larger than the largest diameter of the straightening roll shim.

Further, the hanging beam comprises two main beam plates and a hanging plate connected with the two main beam plates, bosses are arranged at two ends of the bottom of the hanging plate, and a second hanging hole is formed in the hanging plate.

Further, the girder board include interconnect's first connecting plate and second connecting plate, the both ends of first connecting plate are connected with the reinforcing plate.

Further, first lifting holes are symmetrically formed in two ends of the lifting rod, third lifting holes are symmetrically formed in two ends of the second connecting plate, and the first lifting holes are connected with the third lifting holes through traction pieces.

Further, the distance between the third lifting holes is larger than the maximum diameter of the straightening roll gasket, and the distance between the two main beam plates is smaller than the distance between the two suspenders.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) The utility model relates to a heavy H-shaped steel straightening roll sheet assembling lifting appliance, which comprises a lifting rod and a lifting beam, wherein a first groove part is formed in the middle of the lifting rod, and two end faces of the first groove part are inclined planes; the lower pocket type lifting mode is adopted, the lifting work of the straightening roller sheet and the upper gasket can be completed through one-time lifting operation, and compared with the traditional single lifting mode, the lifting efficiency is greatly improved; meanwhile, the straightening roller sheet is positioned in the first groove part during lifting, and the step at the first groove part forms a surrounding state on the peripheral wall of the straightening roller sheet, so that the falling phenomenon can be effectively prevented, and the stability and the safety in the lifting process are ensured.

(2) According to the heavy H-shaped steel straightening roll sheet assembly lifting appliance, the second groove part is formed in the middle of the first groove part, and the second groove part is arranged, so that the middle of the worn straightening roll sheet is not contacted with the lifting rod, the outer diameter part of the straightening roll sheet is ensured to be contacted with the two ends of the first groove part, and the gravity of the worn straightening roll sheet and the upper gasket of the straightening roll sheet is effectively prevented from being concentrated in the middle of the lifting rod, so that the lifting rod is bent and deformed, and the stability and the safety in the lifting process are influenced.

(3) According to the heavy H-shaped steel straightening roll sheet assembly lifting appliance, the distance between the two lifting rods is larger than the diameter of the straightening roll gasket, and meanwhile, the distance between the third lifting holes is also larger than the maximum diameter of the straightening roll gasket, so that the steel wire rope cannot interfere with the straightening roll gasket in the lifting process after being connected, and friction damage of the steel wire rope is avoided; in addition, the distance between the two main beam plates is smaller than the distance between the two suspenders. By means of the design, after the steel wire rope is subjected to hoisting stress, a pulling force to the middle can be generated, so that the step of the first groove part of the suspender can be better clamped on the outer circle of the straightening roller sheet, and the hoisting stability and safety of the straightening roller sheet are ensured.

Drawings

FIG. 1 is a schematic diagram of the whole structure of a heavy H-shaped steel straightening roll sheet assembly lifting appliance;

FIG. 2 is a side view of a heavy H-section steel straightening roll sheet assembly hanger of the present utility model;

FIG. 3 is a schematic view of a boom according to the present utility model;

FIG. 4 is a top view of the boom of the present utility model;

FIG. 5 is a schematic view of a hanging beam according to the present utility model;

FIG. 6 is a schematic view of a lifting plate according to the present utility model;

FIG. 7 is a schematic view of the assembly of a lifting plate and a main beam plate according to the present utility model;

FIG. 8 is a schematic view of the structure of the straightening roll in the present utility model;

FIG. 9 is a schematic view of the construction of a straightening roll shim according to the utility model.

In the figure: 1. a boom; 11. a first groove portion; 12. a second groove portion; 13. a first lifting hole;

2. a hanging beam; 21. a main beam plate; 211. a first connection plate; 212. a second connecting plate; 22. a lifting plate; 221. a boss; 222. a second lifting hole; 23. a reinforcing plate; 24. a third lifting hole;

3. a traction member; 4. straightening the roll sheet; 41. a straightening roll sheet is arranged on the upper part; 42. a lower straightening roll sheet; 5. straightening a roller gasket; 51. an outer spacer; 52. an intermediate gasket; 53. an inner spacer; 54. and (5) processing holes.

Detailed Description

Because the straightening roller gasket does not have a proper lifting point, the traditional straightening roller is lifted by the permanent magnet sucker, and the problems of high labor intensity, low assembly efficiency and poor safety exist. Meanwhile, in the design of the straightening roller set, the phenomenon that the straightening roller sheet possibly slides in the straightening process is considered, and damage to the shaft sleeve and the straightening roller sheet is caused. In general, key grooves are designed on the shaft sleeve of the straightening roller, the straightening roller sheet and the straightening roller gasket to match, so that the synchronous operation of the straightening roller sheet and H-shaped steel in the straightening process is ensured, and the adverse effect caused by the slipping of the straightening roller sheet is avoided. Since the straightening roll sheet and the gasket are provided with key grooves, the key grooves of the straightening roll sheet and the gasket are matched with corresponding keys during assembly. Therefore, the assembly difficulty is increased, the clamping resistance with the shaft sleeve is possibly generated, and the risk that the sucker is separated from the straightening roll gasket is increased. The utility model aims to provide a straightening roller sheet assembling lifting appliance which is good in safety and high in lifting efficiency.

The utility model is further described below in connection with specific embodiments.

Example 1

As shown in fig. 1 and 2, the heavy H-section steel straightening roll sheet assembly lifting appliance of the embodiment comprises a lifting rod 1 and a lifting beam 2, wherein the lifting rod 1 is connected with the lifting beam 2 through a traction piece 3. Wherein, the boom 1 is symmetrically provided with two.

Referring to fig. 8, the straightening roll sheet 4 and the straightening roll shim 5, which are to be replaced, of the straightening roll set are mainly divided into an outer shim 51, an upper straightening roll sheet 41, a middle shim 52, a lower straightening roll sheet 42, and an inner shim 53, and total 5 areas. According to the heavy H-shaped steel straightening roll sheet assembly lifting tool, a lower pocket type design is adopted, the outer side gaskets 51 can be lifted together through lifting of the upper straightening roll sheet 41, the middle gaskets 52 can be lifted together through lifting of the lower straightening roll sheet 42, and lifting time of the straightening roll gaskets is effectively shortened.

Specifically, referring to fig. 3 and 4, a first groove portion 11 is provided in the middle of the boom 1, and both end surfaces of the first groove portion 11 are inclined surfaces, that is, the whole first groove portion 11 is tapered in a bell mouth shape. When the straightening roll sheet is used, the suspender 1 is clamped at the bottom of the straightening roll sheet 4 through the first groove part 11, one side with large opening degree of the first groove part 11 is placed inwards, the opening degree is small, and the side with small opening degree is positioned on the outer side, so that the step of the first groove part 11 forms a surrounding state on the outer peripheral wall of the straightening roll sheet 4, and the stability in the lifting process is ensured.

The length of the first groove 11 (calculated on the side with large opening) needs to satisfy the following conditions, firstly, the length of the first groove 11 needs to be smaller than the diameter of the straightening roll sheet 4, so as to ensure that the outer peripheral wall of the straightening roll sheet 4 can perform a certain stop effect on the step of the first groove 11, and prevent the boom 1 from sliding in opposite directions during the lifting process, thereby affecting the stability of the boom. Secondly, the length of the first groove part 11 needs to be larger than the outer diameter of the straightening roll gasket 5 so as to prevent interference between the traction piece 3 and the straightening roll gasket 5 in the lifting process. It is of course also necessary to ensure that the first groove part 11 is located entirely below the straightening roll sheet 4 in order to ensure a contact area between the two. In this embodiment, the length of the first groove 11 is about 950mm, so that the lifting requirements of the straightening roll sheets 4 of different types can be satisfied at the same time. The minimum diameter of the straightening roll sheet 4 used on site is 1230mm, and the maximum diameter is 1300mm; the diameter of the straightening roll shim 5 is typically about 750 mm.

The depth of the first groove 11 needs to be greater than the height of the largest arc of the straightening roll sheet 4, specifically, in this embodiment, the depth of the first groove 11 is about 45mm, and one opposite side is designed by considering the largest arc R32 of the straightening roll sheet 4, that is, in the disassembly and assembly process, besides the height of the round corners, the step of the first groove 11 still has part of the height to contact with the outer circle of the straightening roll sheet 4, so that the stability of the straightening roll sheet 4 on the lifting appliance is ensured; on the other hand, the contact part between the step of the first groove part 11 and the outer circle of the straight roller sheet 4 can meet the load requirement in the lifting process.

The inclination angle alpha is formed at two ends of the first groove part 11 (the whole first groove part is isosceles trapezoid, alpha is two base angles of the first groove part), and good matching with the peripheral walls of the straightening roll sheets 4 with different diameters needs to be met, so that enough contact area exists between the step part of the first groove part 11 and the peripheral walls of the straightening roll sheets 4, and the contact stability between the step part and the peripheral walls of the straightening roll sheets is ensured. In particular in this embodiment, the inclination angle α is 40 ° -50 °, preferably 45 °, to ensure that the outer circumferential surface of the straightening roll sheet 4 is still in good contact with the 45 ° inclined surface when the straightening roll sheet 4 is from 1300mm in maximum diameter to 1230mm in minimum diameter.

In addition, since the outer peripheral walls of both ends of the straightening roll sheet 4 are worn to some extent during the straightening, the entire middle thickness of the straightening roll sheet 4 is caused to be larger than the thicknesses of both ends. During the lifting process, only the middle part of the straightening roll sheet 4 is contacted with the first groove part 11, and the two ends of the straightening roll sheet are suspended. Because the gravity of the straightening roll sheet 4 and the upper gasket 5 thereof is concentrated in the middle part of the hanger rod 1, the hanger rod 1 is easy to bend, thereby influencing the stability and the safety in the lifting process.

In order to solve the above problem, in this embodiment, the second groove portion 12 is formed in the middle of the first groove portion 11, so as to ensure that the middle portion of the worn straightening roller sheet 4 is not contacted with the hanger rod 1, and ensure that the outer diameter portion of the straightening roller sheet is contacted with two end portions of the first groove portion 11, so that gravity of the worn straightening roller sheet and the upper gasket thereof can be effectively prevented from concentrating on the middle portion of the hanger rod, and bending deformation of the hanger rod is caused, thereby affecting stability and safety in the lifting process.

Since the process specifies that when the flatness of the straightening roll sheet 4 is greater than 2mm, the plane of the straightening roll sheet 4 is turned, the opening depth of the second groove portion 12 is greater than 2mm, preferably about 5mm, so that on one hand, the overall strength of the hanger rod 1 is ensured, and on the other hand, the middle portion of the straightening roll sheet 4 after abrasion is ensured not to be in contact with the hanger rod. The opening length of the second groove portion 12 is determined according to the worn length of the two ends of the straightening roll sheet 4, and in this embodiment, the opening length of the second groove portion 12 is preferably 808mm. And the inclined angles of the inclined surfaces at the two ends of the second groove part 12 are the same as those of the first groove part 11, so that the direction of the step surface of the second groove part 12 is consistent with that of the contact surface of the straightening roll sheet 4, and the lifting stability of the straightening roll sheet 4 is ensured.

In addition, two first hoisting holes 13 are symmetrically formed at positions of the boom 1 close to two ends and are used for connecting the traction piece 3. And the distance between the two suspenders 1 is required to be larger than the diameter of the straightening roll gasket 5 so as to prevent the traction piece 3 from interfering with the straightening roll gasket 5 in the lifting process.

As shown in fig. 5, the hanging beam 2 includes a main beam plate 21, a hanging plate 22, and a reinforcing plate 23. The main beam plates 21 and the reinforcing plates 23 are respectively provided with two reinforcing plates, and the reinforcing plates 23 are positioned between the two main beam plates 21 and used for connecting the end parts of the two main beam plates 21 so as to improve the overall strength of the hanging beam 2.

As shown in fig. 6 and 7, two ends of the bottom of the lifting plate 22 are provided with bosses 221, two main beam plates 21 are respectively located on the bosses 221, other joints are welded, and the lifting plate 22 is located at the center of the main beam plates 21. By the design, the boss 221 at the lower end of the stressed lifting plate 22 can eliminate or lighten the acting force of the gravity of the straightening roller sheet 4 and the gasket 5 on the welding point between the lifting plate 22 and the main beam plate 21, so that the stability between the lifting plate 22 and the main beam plate 21 can be ensured after being stressed. In addition, the lifting plate 22 is provided with a second lifting hole 222, and the second lifting hole 222 is preferably a waist-shaped slot and is located on the center line of the lifting plate 22 for the hook of the crane hook.

Specifically, in this embodiment, the main beam plate 21 includes a first connecting plate 211 and a second connecting plate 212 that are connected with each other, where the whole first connecting plate 211 is designed in a trapezoid, mainly considering that the weights of the straightening roll sheet 4 and the straightening roll gasket 5 are all concentrated in the middle position of the hanging beam 2 in the lifting process, and the main beam plate 21 adopts a trapezoid structure, so that the middle position of the hanging beam 2 can bear the requirement of corresponding strength.

The second connecting plate 212 is square, and the positions near the two ends of the second connecting plate are symmetrically provided with third lifting holes 24, the third lifting holes 24 are matched with the first lifting holes 13, and preferably, the first lifting holes 13 and the third lifting holes 24 are connected with shackles or lifting lugs (shown in the figure).

The distance between the third lifting holes 24 is larger than the maximum diameter of the straightening roller gaskets 5, so that the traction piece 3 can not interfere with the straightening roller gaskets 5 in the lifting process after passing through the third lifting holes 24, and possible friction damage of the traction piece 3 is avoided. In addition, the distance between the two main beam plates 21 is smaller than the distance between the two hanger rods 1. By means of the design, after the traction piece 3 is lifted and stressed, a pulling force towards the middle can be generated, so that the step of the first groove part 11 of the suspender 1 can be better clamped on the outer circle of the straightening roll sheet 4, and the lifting safety of the straightening roll sheet 4 is ensured.

The traction elements 3 are preferably steel wires which need to be able to carry the weight of the corresponding straightening roll sheet 4 and straightening roll shims 5. In particular, in this embodiment, the wire rope may be 10mm in diameter, with a single wire carrying more than 4 tons of weight to meet the load. Even meet the card and hinder when handling straightening roll piece 4 and gasket, wire rope can bear the weight of handling straightening roll piece 4 and straightening roll gasket 5 all, can prevent that it from dropping.

In the heavy H-shaped steel straightening roll sheet assembling lifting appliance, the lifting rod 1 can lift the straightening roll sheet 4 and the gaskets on the upper part of the straightening roll sheet at one time in a lower pocket mode, but the lifting rod still cannot lift the inner gaskets 53 positioned at the lowest part at one time. To further improve the efficiency of the whole handling operation, in this embodiment, as shown in fig. 9, the outer circle of the straightening roll shim 5 is provided with processing holes 54, preferably 6 equally divided processing holes 54, and then the lifting pins are inserted into the processing holes 54, so that the handling operation of one-time stacking can be performed by using the hanging strip.

The specifications of the straightening roll shim 5 are largely divided into thick shims and thin shims. In the normal assembly process, in order to reduce the assembly times, the back gasket is preferably used, and the thick gasket is generally placed below, and the thin gasket is mainly used for adjusting the size of each area and is generally placed above the gasket group. Therefore, the actual lifting requirement can be met only by processing the process holes 54 on the thick gaskets, wherein the thick gaskets are mainly 100mm and 60 mm.

The application method of the heavy H-shaped steel straightening roll sheet assembly lifting tool comprises the steps of firstly, lifting a group of straightening rolls on a straightening roll disassembling machine, locking a locking card, and disassembling an upper end nut; then, the first groove portion 11 of the boom 1 is engaged with the outer peripheral wall of the upper straightening roll piece 41, whereby the upper straightening roll piece 41 is lifted out integrally with the outer gasket 51 at the upper portion thereof; the lower straightening roll piece 42 and the upper middle gasket 52 are integrally lifted out in the same manner; then, the hanging strip is replaced, a pin is inserted into the process hole 54 of the inner spacer 53 positioned at the lowest part, and then the inner spacer 53 is lifted out integrally, and the whole disassembling operation is completed. The mounting operation is the reverse of the above steps.

A set of 9 sets of straightening rollers among heavy H rollers of a horse steel long material business part, a set of straightening rollers are assembled to be hoisted up and down for 11 times respectively, two or more hours are needed for disassembling and assembling a set of straightening rollers, at least more than 20 hours are needed for complete disassembly and assembly, and three shifts are needed for completing the time of assembling a whole set of straightening rollers in addition to the up-down disassembly and assembly of the straightening rollers and the up-down line operation of the whole set of straightening rollers. By adopting the assembly lifting tool of the embodiment, the back straightening roller gasket 5 is matched and improved, and only one shift of time is needed for assembling a set of straightening rollers, so that the assembly efficiency is improved by more than 60%.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (10)

1. The utility model provides a heavy H shaped steel straightening roll piece assembly hoist which characterized in that: including jib (1) and hanging beam (2), be connected through traction element (3) between jib (1) and the hanging beam (2), wherein, jib (1) be provided with two, the middle part of this jib (1) is equipped with first recess portion (11), and the both ends face of this first recess portion (11) is the inclined plane.

2. The heavy H-section steel straightening roll sheet assembly hanger of claim 1, wherein: the middle part of the first groove part (11) is provided with a second groove part (12), and two end surfaces of the second groove part (12) are inclined surfaces.

3. The heavy H-section steel straightening roll sheet assembly hanger of claim 2, wherein: the length of the first groove part (11) is smaller than the outer diameter of the straightening roller sheet (4) and larger than the outer diameter of the straightening roller gasket (5); the opening depth is larger than the maximum arc height of the peripheral wall of the straightening roller sheet (4).

4. A heavy H-section steel straightening roll sheet assembly hanger according to claim 3, characterized in that: the opening depth of the second groove part (12) is more than 2mm.

5. The heavy H-section steel straightening roll sheet assembly hanger of claim 4, wherein: the inclined planes of the first groove part (11) and the second groove part (12) are 40-50 degrees.

6. The heavy H-section steel straightening roll sheet assembly hanger of claim 5, wherein: the distance between the two suspenders (1) is larger than the maximum diameter of the straightening roll gasket (5).

7. The heavy H-section steel straightening roll sheet assembly hanger of any of claims 1-6, wherein: the lifting beam (2) comprises two main beam plates (21) and lifting plates (22) connected with the two main beam plates (21), bosses (221) are arranged at two ends of the bottom of each lifting plate (22), and second lifting holes (222) are formed in each lifting plate (22).

8. The heavy H-section steel straightening roll sheet assembly hanger of claim 7, wherein: the main beam plate (21) comprises a first connecting plate (211) and a second connecting plate (212) which are connected with each other, and reinforcing plates (23) are connected to two ends of the first connecting plate (211).

9. The heavy H-section steel straightening roll sheet assembly hanger of claim 8, wherein: the two ends of the suspender (1) are symmetrically provided with first lifting holes (13), the two ends of the second connecting plate (212) are symmetrically provided with third lifting holes (24), and the first lifting holes (13) are connected with the third lifting holes (24) through traction pieces (3).

10. The heavy H-section steel straightening roll sheet assembly hanger of claim 9, wherein: the distance between the third lifting holes (24) is larger than the maximum diameter of the straightening roll gaskets (5), and the distance between the two main girder plates (21) is smaller than the distance between the two suspenders (1).