Roller vertical clamping and positioning tool for assembling and welding

Abstract

The utility model relates to the technical field of assembly or welding process equipment, in particular to a roller vertical clamping and positioning tool for assembly and welding, which comprises a pit arranged on an operation site, a centering positioner arranged at the bottom of the pit and a centering clamp arranged on the periphery of the opening of the pit. The centering positioner comprises a centering seat ring and a conical positioning hole formed in the upper end face of the centering seat ring. The centering clamping device comprises a pair of synchronous clamping devices and a pair of V-shaped clamping blocks, wherein the pair of synchronous clamping devices is fixed to the periphery of the pit opening portion of the pit and arranged on the two sides of the periphery of the pit opening portion respectively, and the pair of V-shaped clamping blocks is correspondingly arranged at the front ends of the pair of synchronous clamping devices and used for clamping the outer circle of a roller. According to the utility model, vertical hoisting during roller assembling and welding is facilitated, and the convenience and the production efficiency of roller assembling operation or roller welding operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of assembly or welding process equipment technology, specifically to a vertical clamping and positioning fixture for assembly and welding of rolling mill rolls. Background Technology

[0002] Rolls are core components in rolling mills. There are many types of rolls; depending on the needs, they can be welded parts or assemblies formed by assembling and mating two or more components. For welded rolls, the roll is usually placed horizontally before welding. The drawback is that the weight of the roll components can cause significant welding deformation, and the weld quality is difficult to control. For assembled rolls, the roll is usually placed horizontally before butt-jointing assembly. The drawback is that the assembly parts are not easily aligned accurately during hoisting, resulting in lower assembly efficiency.

[0003] Therefore, it is necessary to improve the assembly and welding techniques of the rolls to address the aforementioned problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a vertical clamping and positioning fixture for rolls used in assembly and welding. It aims to facilitate vertical hoisting during roll assembly and welding, and improve the convenience and production efficiency of roll assembly or welding operations. The specific technical solution is as follows:

[0005] A vertical clamping and positioning fixture for assembling and welding rolls includes a pit set in the operating area, a centering locator set at the bottom of the pit, and a centering clamp set around the pit opening. The centering locator includes a centering ring and a conical positioning hole set on the upper end face of the centering ring. The centering clamp includes a pair of synchronous clamps fixed around the pit opening and positioned on both sides of the pit opening, and a pair of V-shaped clamps corresponding to the front end of the pair of synchronous clamps for clamping the outer circle of the roll.

[0006] Preferably, the pair of synchronous clamps are a pair of synchronous clamping cylinders or a pair of servo electric cylinders, and the pair of V-shaped clamps are fixed to the front end of the telescopic rod of the pair of synchronous clamping cylinders or the pair of servo electric cylinders.

[0007] Preferably, the centering positioner further includes a lifter installed at the bottom of the pit, and the centering seat is fixed to the upper part of the lifter.

[0008] Preferably, the lifting device is a scissor lift, and the centering seat is fixed to the lifting platform of the scissor lift.

[0009] As a further improvement of this utility model, a rotary table is provided on the lifting platform, and the centering seat is fixed on the rotary table of the lifting platform.

[0010] In this utility model, the pit is a cylindrical pit that is set vertically downward and formed by concrete pouring. A maintenance passage is provided on one side of the cylindrical pit along the vertical direction, and a ladder is provided on the maintenance passage.

[0011] Preferably, a bottom steel plate for installing the lifting device is pre-embedded in the bottom of the pit, and a pit opening pre-embedded steel plate for installing the synchronous clamping device is pre-embedded on the ground outside the pit opening.

[0012] Preferably, a surrounding plate is provided above the pit opening, and mounting holes are provided on both sides of the lower part of the surrounding plate. The housing of the synchronous clamping cylinder or servo electric cylinder is located outside the surrounding plate and fixed to the pre-embedded steel plate at the pit opening. The telescopic rod of the synchronous clamping cylinder or servo electric cylinder passes through the mounting holes and enters into the surrounding plate.

[0013] As a further improvement, the vertical clamping and positioning fixture for assembly and welding of the present invention is further provided with an infrared radiation heating device for preheating the shaft hole on the roll during roll assembly or for preheating the welding part on the roll during roll welding. The infrared radiation heating device includes an infrared radiation heating plate disposed on the inner wall of the enclosure and located above the mounting hole.

[0014] Preferably, an asbestos board is provided on the clamping surface of the V-shaped clamping block.

[0015] In this utility model, a centering pin is also provided. The centering pin can be installed in the conical positioning hole of the centering ring. It can be used specifically for centering when the lower end of the roll has a center hole or a through hole, which is beneficial to further improve the centering accuracy.

[0016] The method of using this utility model is as follows:

[0017] (1) Preparation: Adjust the height of the centering ring in the vertical direction to a suitable position by using the lifting device to adjust the height of the vertical rolls to be assembled or welded as required.

[0018] (2) Lifting: The roll is lifted into the pit so that the outer circle of the lower end of the roll is positioned on the conical positioning hole of the centering seat, thereby realizing the automatic centering of the outer circle of the lower end of the roll;

[0019] (3) Fixing: Open a pair of synchronous clamps that act as centering clamps, and use a pair of V-shaped clamps on the pair of synchronous clamps to clamp the upper outer circle of the roll and achieve automatic centering of the upper outer circle of the roll;

[0020] (4) Preheating: Turn on the infrared radiation heating device to preheat the shaft hole or welding part on the upper part of the roll that needs to be assembled;

[0021] (5) Assembly or welding: For the roll shaft holes that need to be assembled, the assembly parts are hoisted onto the roll shaft holes to achieve assembly and docking; for the roll parts that need to be welded, welding is performed using a welding device after preheating.

[0022] Preferably, an infrared temperature detection sensor can also be installed on the enclosure to monitor the temperature of the heated part of the roll.

[0023] After welding, an infrared radiation heating device can be used to keep the welded rolls warm.

[0024] The beneficial effects of this utility model are:

[0025] First, the present invention provides a vertical clamping and positioning fixture for assembling and welding rolls. By setting a centering ring with a conical positioning hole at the bottom of the pit and setting a pair of synchronous clamps on both sides of the pit opening, the automatic centering of the rolls after vertical hoisting is achieved. The centering accuracy is good and the operation efficiency is high. The vertical hoisting and positioning of the rolls can greatly facilitate the assembly or welding of the rolls.

[0026] Secondly, the vertical clamping and positioning fixture for roll assembly and welding of this utility model is equipped with an infrared radiation heating device, which can realize preheating before roll assembly or welding, ensuring the smooth progress of roll assembly and improving the quality of welding.

[0027] Third, the vertical clamping and positioning fixture for rolls used in assembly and welding of this utility model has a centering ring that can be raised, lowered and rotated, which is beneficial to further improve the adaptability and flexibility of roll assembly or welding, and meet the needs of special assembly or special welding. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of a vertical clamping and positioning fixture for assembly and welding of rolls according to this utility model.

[0029] Figure 2 The rolls are hoisted to Figure 1 A schematic diagram of the structure for vertical clamping and positioning within the pit;

[0030] Figure 3 This is a schematic diagram (top view) of the horizontal cross-section of a cylindrical pit.

[0031] Figure 4 Is Figure 1 A schematic diagram (top view) of a structure in which asbestos boards are installed on a pair of clamping blocks.

[0032] In the diagram: 1. Roller, 2. Pit, 3. Centering locator, 4. Centering clamp, 5. Centering seat, 6. Conical positioning hole, 7. Synchronous clamp (synchronous clamping cylinder or servo electric cylinder), 8. V-shaped clamp, 9. Telescopic rod, 10. Lifter, 11. Turntable, 12. Maintenance passage, 13. Ladder, 14. Pit bottom embedded steel plate, 15. Pit opening embedded steel plate, 16. Enclosure, 17. Mounting hole, 18. Infrared radiation heating device, 19. Infrared radiation heating plate, 20. Asbestos board. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0034] like Figures 1 to 4 The present invention illustrates an embodiment of a vertical clamping and positioning fixture for assembling and welding rolls, comprising a pit 2 set in the operating area, a centering locator 3 set at the bottom of the pit 2, and a centering adjuster 4 set around the opening of the pit 2. The centering locator 3 includes a centering seat ring 5 and a conical positioning hole 6 set on the upper end face of the centering seat ring 5. The centering clamping device 4 includes a pair of synchronous clamping devices 7 fixed around the opening of the pit 2 and positioned on both sides of the opening, and a pair of V-shaped clamping blocks 8 corresponding to the front end of the pair of synchronous clamping devices 7 for clamping the outer circle of the roll 1.

[0035] Preferably, the pair of synchronous clamping devices 7 are a pair of synchronous clamping cylinders or a pair of servo electric cylinders, and the pair of V-shaped clamping blocks 8 are correspondingly fixed at the front end of the telescopic rod 9 of the pair of synchronous clamping cylinders or the pair of servo electric cylinders.

[0036] Preferably, the centering locator 3 further includes a lifter 10 installed at the bottom of the pit 2, and the centering seat 5 is fixed at the upper end of the lifter 10.

[0037] Preferably, the lifting device 10 is a scissor lift, and the centering ring 5 is fixed to the lifting platform of the scissor lift.

[0038] As a further improvement of this embodiment, a rotary table 11 is provided on the lifting platform, and the centering seat 5 is fixed on the rotary table 11 of the lifting platform.

[0039] In this embodiment, the pit 2 is a cylindrical pit that is set vertically downward and formed by concrete pouring. A maintenance passage 12 is provided on one side of the cylindrical pit along the vertical direction, and a ladder 13 is provided on the maintenance passage.

[0040] Preferably, a bottom embedded steel plate 14 for installing the lifting device is pre-embedded in the bottom of the pit, and a pit-mouth embedded steel plate 15 for installing the synchronous clamping device is pre-embedded on the ground outside the pit opening of the pit 2.

[0041] Preferably, a surrounding plate 16 is provided above the pit opening. The lower two sides of the surrounding plate 16 are provided with mounting holes 17. The housing of the synchronous clamping cylinder or servo cylinder is located outside the surrounding plate and fixed on the pre-embedded steel plate 15 at the pit opening. The telescopic rod 9 of the synchronous clamping cylinder or servo cylinder passes through the mounting holes 17 and enters into the surrounding plate 18.

[0042] As a further improvement, the vertical clamping and positioning fixture for assembly and welding of the roll in this embodiment is also provided with an infrared radiation heating device 18 for preheating the shaft hole on the roll 1 during assembly or for preheating the welding part on the roll 1 during welding. The infrared radiation heating device 18 includes an infrared radiation heating plate 19 disposed on the inner wall of the enclosure 16 and located above the mounting hole 17.

[0043] Preferably, an asbestos board 20 is provided on the clamping surface of the V-shaped clamping block 8.

[0044] In this embodiment, a centering pin (not shown in the figure) is also provided. The centering pin can be installed in the tapered positioning hole 6 of the centering ring 5. It can be used specifically for centering when the lower end of the roll 1 has a center hole or through hole, which is beneficial to further improve the centering accuracy.

[0045] The usage method of this embodiment is as follows:

[0046] (1) Preparation: Adjust the height of the centering ring 5 in the vertical direction to a suitable position by using the lifting device 10 to adjust the height of the vertical roll 1 to be assembled or welded as needed.

[0047] (2) Lifting: The roll 1 is lifted into the pit 2 so that the outer circle of the lower end of the roll 1 is positioned on the conical positioning hole 6 of the centering seat ring 5, thereby realizing the automatic centering of the outer circle of the lower end of the roll 1.

[0048] (3) Fixing: Open a pair of synchronous clamps that serve as centering clamps 4, and clamp the upper outer circle of the roll 1 by a pair of V-shaped clamps 8 on the pair of synchronous clamps and realize the automatic centering of the upper outer circle of the roll 1.

[0049] (4) Preheating: Turn on the infrared radiation heating device 18 to preheat the shaft hole or welding part on the upper part of the roll 1 that needs to be assembled;

[0050] (5) Assembly or welding: For the roller 1 shaft hole that needs to be assembled, the assembly parts are hoisted onto the roller 1 shaft hole to achieve assembly docking; for the roller 1 part that needs to be welded, welding is performed using a welding device after preheating.

[0051] Preferably, an infrared temperature detection sensor can also be installed on the enclosure 16 to monitor the temperature of the heating part of the roll 1.

[0052] After welding, the infrared radiation heating device 18 can be used to keep the welded roll 1 warm.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A vertical clamping and positioning fixture for assembling and welding rolls, characterized in that, The device includes a pit set in the operating area, a centering locator set at the bottom of the pit, and a centering clamp set around the pit opening. The centering locator includes a centering ring and a conical positioning hole set on the upper end face of the centering ring. The centering clamp includes a pair of synchronous clamps fixed around the pit opening and positioned on both sides of the pit opening, and a pair of V-shaped clamps corresponding to the front end of the pair of synchronous clamps for clamping the outer circle of the roll.

2. The vertical clamping and positioning fixture for rolls used in assembly and welding according to claim 1, characterized in that, The pair of synchronous clamps are a pair of synchronous clamping cylinders or a pair of servo electric cylinders, and the pair of V-shaped clamps are fixed to the front end of the telescopic rod of the pair of synchronous clamping cylinders or the pair of servo electric cylinders.

3. The vertical clamping and positioning fixture for rolls used in assembly and welding according to claim 1, characterized in that, The centering positioner also includes a lifter installed at the bottom of the pit, and the centering seat is fixed to the upper part of the lifter.

4. A vertical clamping and positioning fixture for assembling and welding rolls according to claim 3, characterized in that, The lifting device is a scissor lift, and the centering seat is fixed to the lifting platform of the scissor lift.

5. A vertical clamping and positioning fixture for assembling and welding rolls according to claim 4, characterized in that, The lifting platform is equipped with a turntable, and the centering seat is fixed on the turntable of the lifting platform.

6. A vertical clamping and positioning fixture for assembling and welding rolls according to claim 5, characterized in that, The pit is a cylindrical pit that is set vertically downward and formed by pouring concrete. A maintenance passage is provided on one side of the cylindrical pit along the vertical direction, and a ladder is provided on the maintenance passage.

7. A vertical clamping and positioning fixture for assembling and welding rolls according to claim 3, characterized in that, The bottom of the pit is pre-embedded with a steel plate for installing the lifting device, and the ground around the pit opening is pre-embedded with a steel plate for installing the synchronous clamping device.

8. A vertical clamping and positioning fixture for assembling and welding rolls according to claim 7, characterized in that, A surrounding plate is provided above the pit opening. Mounting holes are provided on both sides of the lower part of the surrounding plate. The housing of the synchronous clamping cylinder or servo electric cylinder is located outside the surrounding plate and fixed to the pre-embedded steel plate at the pit opening. The telescopic rod of the synchronous clamping cylinder or servo electric cylinder passes through the mounting holes and enters into the surrounding plate.

9. A vertical clamping and positioning fixture for assembling and welding rolls according to claim 8, characterized in that, It is also equipped with an infrared radiation heating device for preheating the shaft hole on the roll during roll assembly or for preheating the welded part on the roll during roll welding. The infrared radiation heating device includes an infrared radiation heating plate disposed on the inner wall of the enclosure and located above the mounting hole.

10. A vertical clamping and positioning fixture for assembling and welding rolls according to claim 1, characterized in that, A layer of asbestos board is provided on the clamping surface of the V-shaped clamping block.

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