Auxiliary installation tools and installation methods for continuous casting machine ladle turntable

Abstract

The present invention relates to mechanical tooling, in particular to an auxiliary installation tool and installation method for a large ladle turntable of a continuous casting machine, comprising a transverse platform, the transverse platform comprising an operating platform, an assembly platform and a sliding track, a jacking frame is arranged on the sliding track, and the jacking frame is connected to the sliding track through a hand chain hoist; the large ladle turntable is placed inside the jacking frame, and the large ladle turntable is connected to the jacking frame through a jack. The overall structure of the present invention is safe and reliable, the operation is stable, the installation speed of the large ladle turntable is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to mechanical tooling, in particular to an auxiliary installation tool and an installation method for a ladle turntable of a continuous casting machine. Background Art

[0002] According to the requirements of the production process, the components of the large-package turntable are relatively large in size and weight, and are installed under the overhead crane beam, which makes installation difficult.

[0003] The traditional method of installing a large ladle turntable is: first, tie a hand chain hoist to the overhead crane beam above the large ladle turntable, and use the overhead crane and the hand chain hoist to install the base and slewing bearing in place. Then assemble the upper half of the large ladle turntable (slewing support table, white dry, lifting cylinder, swing arm and steel tank support, etc.), and fix the swing arm and slewing support table to prevent the assembled parts from moving. Finally, use the overhead crane of the molten steel receiving span and the overhead crane of the casting span to install the upper half of the large ladle turntable on the base using the double-machine lifting method.

[0004] The disadvantages of the traditional installation method are: (1) Welding is required when fixing the swing arm and the slewing support table, which will cause damage to the equipment. When hoisting the upper part of the large bag turntable, excessive force may cause movement between the components, which may cause danger. (2) When hoisting the base, the overhead crane and the hand winch will work together to pull diagonally and distort, which will pose a safety hazard. (3) When the two-span overhead crane hoists the upper part of the large bag turntable, the double-machine lifting safety is poor, and the initial stage of hoisting will cause diagonal pulling and distorting, which will pose a safety hazard. (4) The traditional method is greatly affected by factors such as the overhead crane, workshop steel structure, and large bag turntable size. If any of the above conditions is unfavorable, the installation difficulty will be greatly increased. (5) The installation period is long and the installation cost is high. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes an auxiliary installation tool and an installation method for a continuous casting machine ladle turntable, which can shorten the construction period and reduce the installation cost under the premise of reliable installation.

[0006] The present invention adopts the following technical solution:

[0007] An auxiliary installation tool for a large ladle turntable of a continuous casting machine comprises a transverse moving platform, the transverse moving platform comprises an operating platform, an assembly platform and a sliding track, a jacking frame is arranged on the sliding track, and the jacking frame is connected to the sliding track through a hand winch; the large ladle turntable is placed inside the jacking frame, and the large ladle turntable is connected to the jacking frame through a jack.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] The present invention utilizes a transverse moving platform and a jacking frame to complete the installation of a large-bale turntable, which greatly improves safety and accelerates construction progress to a certain extent.

[0010] Furthermore, the beneficial effects of the present invention are:

[0011] The jacking frame is a U-shaped structure with one end open. A connecting plate is provided at the open end of the jacking frame, and both ends of the connecting plate are respectively connected to the jacking frame by bolts.

[0012] Four jacks are provided, two on each of the two opposite sides of the jacking frame, and cushion blocks are symmetrically provided between the two jacks.

[0013] The jacking frame is rollingly connected to the sliding track through the tank trolley below it.

[0014] A lifting lug 1 is arranged at one end of the sliding track away from the operating platform, and a lifting lug 2 is arranged at a position corresponding to the lifting lug 1 on one side of the jacking frame away from the operating platform, and the lifting lug 1 and the lifting lug 2 are connected by a hand winch.

[0015] Two sliding rails are provided, and the distance between the two sliding rails is greater than the base diameter of the large bag turntable.

[0016] The lifting frame and the connecting plate are connected via a fixing plate.

[0017] The opening spacing of the opening ends of the jacking frame is larger than the diameter of the base of the large bag turntable.

[0018] The installation method using this tool is as follows:

[0019] A. Install the transverse platform: one end of the transverse platform is placed on the base of the ladle turntable, and the other end is placed on the base of the crystallizer vibration table;

[0020] B. Install the base and slewing bearing of the large bag turntable: install the base of the large bag turntable on the transverse platform and perform fine adjustment. After the fine adjustment of the base of the large bag turntable is completed, install the slewing bearing on the base of the large bag turntable;

[0021] C. Install the remaining equipment parts of the large ladle turntable; the remaining equipment parts of the large ladle turntable include the turntable support, swing rod, lifting cylinder, swing arm and molten steel tank support, which are installed in sequence into an integral module according to the drawings and specifications, and then the assembled integral module is installed on the base of the large ladle turntable;

[0022] D. Install the lifting frame: Install the tank trolley on the sliding track of the transverse platform, then install the lifting frame above the tank trolley, and push the lifting frame along the sliding track;

[0023] E. Horizontal movement of the bale turntable: Use the jack on the lifting frame to lift the bale turntable, add a cushion block between the lifting frame and the bale turntable, and then lower the jack to make the cushion block bear the gravity of the bale turntable; then use the hand chain hoist to pull the lifting frame to the side close to the bale turntable foundation until the bale turntable moves as a whole to the top of the bale turntable foundation;

[0024] F. Lower the large bag turntable: Start the jack, lift up the large bag turntable and remove the pads, check the longitudinal and transverse center lines and elevation deviations of the large bag turntable, and tighten the large bag turntable and the anchor bolts after the deviation requirements are met.

[0025] G. Dismantle the lifting frame and transverse platform: During dismantling, remove the jack, lifting frame, tank trolley and transverse platform in sequence.

[0026] This method is combined with the actual situation on site, takes advantage of the structural characteristics of the equipment foundation in the workshop, and adopts the method of lateral movement and jacking for modular installation, which greatly reduces the construction cost and improves the construction efficiency under the premise of safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the transverse platform;

[0029] Figure 3 It is a structural schematic diagram of the jacking frame;

[0030] Figure 4 for Figure 3 's directional view;

[0031] Figure 5 This is a structural diagram of the transverse platform installed on the basis of the large bag turntable;

[0032] Figure 6 A schematic diagram of the structure for installing the base of the large bag turntable;

[0033] Figure 7 It is a schematic diagram of the structure of the remaining part of the large bag turntable;

[0034] Figure 8 It is a schematic diagram of the structure in which the remaining part of the large bag turntable is installed on the base;

[0035] Fig. 9 for Figure 8 A magnified view of part A;

[0036] Fig.10 This is a structural diagram of the jacking frame installed on the transverse platform;

[0037] Fig.11 for Fig.10 A partial enlarged view of

[0038] Fig.12 It is a structural schematic diagram of installing the pads on the jacking frame;

[0039] Fig.13 for Fig.12 Enlarged view of part C;

[0040] Fig.14 for Fig.12 A magnified view of the D portion;

[0041] Fig.15 This is a schematic diagram of the large bag turntable after the overall lateral movement is completed;

[0042] Fig.16 This is a schematic diagram of the structure after the lifting frame and tank trolley are removed;

[0043] Fig.17 This is a diagram showing the position status of the large bag turntable base after fine adjustment and the large bag turntable foundation;

[0044] In the figure: transverse platform 1; operating platform 101; assembly platform 102; sliding track 103; lifting frame 2; guardrail 3; jack 4; pad 5; connecting plate 6; fixing plate 7; guide groove 8; lifting eye 1 9; lifting eye 2 10; large bag turntable foundation 11; large bag platform foundation top section 1101; large bag turntable base 12; large bag turntable base bottom section 1201; swing arm 13; molten steel tank support 14; swing rod 15; rotary support platform 16; tank trolley 17; hand chain hoist 18; longitudinal center line a19; longitudinal center line b20; transverse center line 21; reinforcement plate 22; slewing bearing 23. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0046] like Figure 1 , 2As shown, an auxiliary installation tool for a ladle turntable of a continuous casting machine is mainly composed of a transverse platform 1 and a jacking frame 2. The transverse platform 1 is mainly composed of an operating platform 101, an assembly platform 102 and a sliding track 103. The bottom frame of the operating platform 101 is welded by steel sections or angle steels. A layer of patterned plate is installed on the top of the operating platform 101. Guardrails 3 are installed on both sides of the operating platform 101 and the side away from the ladle turntable foundation 11. The sliding track 103 is made of two parallel steel sections. One end of the sliding track 103 is fixedly connected to the operating platform 101, and the other end is fixedly connected to the ladle turntable foundation 11. The side of the sliding track 103 close to the operating platform 101 is provided with an assembly platform 102. The assembly platform 102 is welded by steel sections, and the assembly platform 102 is placed between the two sliding tracks 103.

[0047] like Figure 3 , 4 As shown, the lifting frame 2 is a U-shaped structure with one end open, and the open end of the lifting frame 2 is closed by a connecting plate 6, and the lifting frame 2 and the connecting plate 6 form a rectangular frame structure. The connecting plate 6 and the lifting frame 2 are respectively made of steel, and bolt holes are respectively provided at both ends of the upper and lower flange plates of the connecting plate 6, and bolt holes are respectively provided at the two ends of the open end of the lifting frame 2 (the bolt holes on the lifting frame 2 are also provided on the upper and lower flange plates, and the top and bottom of the lifting frame 2 are respectively fixed to the connecting plate 6 by a fixing plate 7 and bolts), and the connecting plate 6 and the lifting frame 2 are connected by a rectangular fixing plate 7, and positioning holes are respectively provided on the fixing plate 7 corresponding to the bolt holes on the lifting frame 2 and the connecting plate 6, and then fixed by bolts.

[0048] like Figure 3 , 4 As shown, jacks 4 are symmetrically arranged on the two sides where the jacking frame 2 is connected to the connecting plate 6, with two jacks arranged on each side. The two jacks 4 on the same side are arranged at intervals, and a group of rigid pads 5 are symmetrically arranged between the two jacks 4. Each group of pads 5 is arranged close to the corresponding jacks 4, and the pads 5 can be formed by stacking multiple steel plates in layers.

[0049] like Figure 1 As shown, two tank trolleys 17 are respectively arranged on each sliding track 103. In order to prevent the tank trolleys 17 from sliding off the sliding track 103, channel steel is laid on the top of the sliding track 103 as a guide groove 8, and the tank trolleys 17 are placed in the guide groove 8. The two side edges of the jacking frame 2 are respectively placed on their corresponding tank trolleys 17, and then slowly pushed along the sliding track 103 to one side of the large bag turntable foundation 11.

[0050] A lifting lug 9 is provided at one end of each sliding rail 103 away from the operating platform 101 , and lifting lugs 10 are provided at both ends of the connecting plate 6 corresponding to the lifting lugs 9 on the sliding rail 103 on their respective sides, and the lifting lugs 19 and 10 are connected by a hand winch 18 .

[0051] In this embodiment, in order to push the lifting frame 2 along the sliding rail 103 to the bottom of the large bag turntable, the distance between the two sliding rails 103 should be greater than the diameter of the large bag turntable base 12, and the opening distance of the lifting frame 2 should also be greater than the diameter of the large bag turntable base 12.

[0052] In this embodiment, it is necessary to ensure that the upper surface of the operating platform 101, the upper surface of the assembly platform 102 and the upper surface of the sliding track 103 are all in a horizontal state, and the upper surface of the operating platform 101, the upper surface of the assembly platform 102 and the top cross-section of the large bag turntable base 11 are on the same horizontal plane.

[0053] In order to make the jacking frame 2 more stable, a reinforcement plate 22 is added at each top corner of the jacking frame 2. The reinforcement plate 22 is used to connect two adjacent sides of the jacking frame 2. A reinforcement plate 22 is also arranged between the jacking frame 2 and the connecting plate 6. A reinforcement plate 22 is arranged at each end of the connecting plate 6. The connection method between the reinforcement plate 22 and the connecting plate 6 is the same as the connection method between the jacking frame 2 and the connecting plate 6, and both are fixed by fixing plates 7 and bolts.

[0054] A method for installing a ladle turntable of a continuous casting machine using the tool is performed in the following steps:

[0055] A. Install the lateral platform 1: Figure 5 As shown, one end of the sliding track 103 of the transverse moving platform 1 is placed on the large bag turntable foundation 11 and is fixedly connected to the large bag turntable foundation 11. When installing the transverse moving platform 1, ensure that the center line between the two sliding tracks 103 is parallel to the horizontal center line of the large bag turntable to prevent the sliding track 103 from deviating during use. The operating platform 101 is placed on the foundation of the crystallizer vibration table and is firmly fixed to the crystallizer vibration table to prevent the transverse moving platform 1 from moving when the large bag turntable as a whole moves.

[0056] B. Install the base 12 and slewing bearing 23 of the large bag turntable: Figure 6 As shown, the base 1 of the large bag turntable platform is first placed on the assembly platform 102 and fine-tuned so that the longitudinal horizontal line of the bottom cross section 1201 of the large bag turntable platform base is parallel to the longitudinal horizontal line of the top cross section 1101 of the large bag platform foundation, and the transverse horizontal line of the bottom cross section 1201 of the large bag turntable base is in the same straight line as the transverse horizontal line of the large bag turntable foundation (as shown in FIG. Fig.17As shown, the longitudinal horizontal line of the bottom section 1201 of the large bag turntable base is the longitudinal horizontal line a19, and the longitudinal horizontal line of the top section 1101 of the large bag turntable base is the longitudinal horizontal line b20). After the large bag turntable base 12 is fine-tuned, the slewing bearing 23 is installed on the top of the large bag turntable base 12.

[0057] C. Install the remaining equipment parts of the large bag turntable: Figure 7 , 8 As shown in , 9, the remaining equipment components of the large ladle turntable are mainly composed of a turntable support platform 16, a rocker arm 15, a lifting cylinder, a swing arm 13 and a molten steel tank support 14. According to the drawings and specifications, the remaining equipment components are assembled into an integral module in sequence, and then the assembled integral module is installed on the base 12 of the large ladle turntable, and the fastening bolts between the integral module and the slewing bearing 23 are tightened according to the drawings and specifications.

[0058] D. Install the lifting frame 2: Fig.10 , 11 As shown, the guide groove 8 is installed and fixed on the sliding track 103, and then the tank trolley 17 is placed in the guide groove 8, the jacking frame 2 is installed on the tank trolley 17, and the jacks 4 are respectively installed on the side edges of the jacking frame 2, and the jacking frame 2 is slowly pushed in until the jacking frame 2 is placed directly below the overall structure of the bale turntable, and then the connecting plate 6 is closed and connected to the jacking frame 2, and the hand winch 18 is used to connect the lifting ears 10 at both ends of the connecting plate 6 to the lifting ears 9 on the corresponding sliding track 103.

[0059] E. Horizontal movement of the large bag turntable: Fig.12 , 13 As shown in 14, four jacks 4 are started at the same time, so that the four jacks 4 synchronously lift the large bag turntable as a whole. When the large bag turntable rises to the specified height, a cushion block 5 is placed between the lifting frame 2 and the large bag turntable, and then the jacks 4 are lowered at the same time. At this time, the weight of the large bag turntable falls on the cushion block 5 to avoid the safety hazard caused by the failure of the jacks 4; continue to use the hand winch 18 to pull the lifting frame 2 to slowly move the large bag turntable to one side of the large bag turntable foundation 11 until the large bag turntable as a whole moves to the top of the large bag turntable foundation 11 (as shown in FIG. Fig.15 as shown).

[0060] F. The large bag turntable falls back: Fig.16As shown, four jacks 4 are started simultaneously, so that the jacks 4 lift up the large bag turntable and bear the weight of the large bag turntable, the cushion block 5 is removed, and then the four jacks 4 are lowered simultaneously, and the large bag turntable is lowered back to the large bag turntable foundation 11, and the longitudinal and transverse center lines and elevation deviations of the large bag turntable are checked. After the deviation requirements are met, the large bag turntable base 12 is locked and fixed using the anchor bolts on the large bag turntable foundation 11.

[0061] G. Dismantle the lifting frame 2 and the transverse platform 1: When dismantling, first remove the jack 4 on the lifting frame 2, then remove the connecting plate 6 from the lifting frame 2, then remove the lifting frame 2 and the tank trolley 17 from the sliding track 103 in turn, and finally remove the transverse platform 1.

[0062] In the present invention, the lateral movement method is adopted to complete the translation of the large bag turntable, and the jacking method is used to complete the lifting and lowering of the large bag turntable. The whole process is safe and reliable, which greatly speeds up the construction progress and reduces the construction cost. It is worthy of promotion and application in actual work.

[0063] The above are only specific implementations of the present invention, but the protection of the present invention is not limited to this. All equivalent changes or substitutions to the technical features of the technical solution that can be thought of by technicians in this technical field are included in the protection scope of the present invention.

Claims

1. A method for installing a ladle turntable of a continuous casting machine, characterized in that; Follow these steps: A. Install the transverse platform: one end of the transverse platform is placed on the base of the ladle turntable, and the other end is placed on the base of the crystallizer vibration table; B. Install the base and slewing bearing of the large bag turntable: install the base of the large bag turntable on the transverse platform and perform fine adjustment. After the fine adjustment of the base of the large bag turntable is completed, install the slewing bearing on the base of the large bag turntable; C. Install the remaining equipment parts of the large ladle turntable; the remaining equipment parts of the large ladle turntable include the turntable support, swing rod, lifting cylinder, swing arm and molten steel tank support, which are installed in sequence into an integral module according to the drawings and specifications, and then the assembled integral module is installed on the base of the large ladle turntable; D. Install the jacking frame: install the guide groove and the tank trolley on the sliding track of the transverse platform, then install the jacking frame above the tank trolley, and push the jacking frame along the sliding track; E. Horizontal movement of the bale turntable: Use the jack on the lifting frame to lift the bale turntable, add a cushion block between the lifting frame and the bale turntable, and then lower the jack to make the cushion block bear the weight of the bale turntable; then use the hand chain hoist to pull the lifting frame to the side close to the bale turntable foundation until the bale turntable moves as a whole to the top of the bale turntable foundation; F. Lowering the large bag turntable: Start the jack, lift up the large bag turntable, remove the pad, then lower the jack, lower the large bag turntable to the large bag turntable foundation, check the longitudinal and transverse center lines and elevation deviations of the large bag turntable, and tighten the large bag turntable and the anchor bolts after the deviation requirements are met; G. Dismantle the lifting frame and transverse platform: During dismantling, remove the jack, lifting frame, tank trolley and transverse platform in sequence.

2. The method for installing the ladle turret of the continuous casting machine according to claim 1, characterized in that: The transverse platform includes an operating platform, an assembly platform and a sliding track, on which a lifting frame is arranged; the lifting frame is connected to the sliding track through a hand chain hoist; the large bag turntable is placed inside the lifting frame, and the large bag turntable is connected to the lifting frame through a jack.

3. The method for installing the ladle turret of the continuous casting machine according to claim 2, characterized in that: The jacking frame is a U-shaped structure with one end open. A connecting plate is provided at the open end of the jacking frame, and both ends of the connecting plate are respectively connected to the jacking frame by bolts.

4. The method for installing a ladle turret of a continuous casting machine according to claim 1, characterized in that: Four jacks are provided, two on each of the two opposite sides of the jacking frame, and cushion blocks are symmetrically provided between the two jacks.

5. The method for installing the ladle turret of the continuous casting machine according to claim 1, characterized in that: The lifting frame is rollingly connected to the sliding track through the tank trolley below it.

6. The method for installing the ladle turret of the continuous casting machine according to claim 1, characterized in that: A lifting lug 1 is arranged at one end of the sliding track away from the operating platform, and a lifting lug 2 is arranged at a position corresponding to the lifting lug 1 on one side of the jacking frame away from the operating platform, and the lifting lug 1 and the lifting lug 2 are connected by a hand winch.

7. The method for installing a ladle turret of a continuous casting machine according to claim 1, characterized in that: Two sliding rails are provided, and the distance between the two sliding rails is greater than the base diameter of the large bag turntable.

8. The method for installing the ladle turret of the continuous casting machine according to claim 3, characterized in that: The lifting frame and the connecting plate are connected via a fixing plate.

9. The method for installing the ladle turret of the continuous casting machine according to claim 3, characterized in that: The opening spacing of the opening ends of the jacking frame is larger than the diameter of the base of the large bag turntable.

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