Correcting device for welding large-tonnage gantry

Abstract

The correcting device comprises a hydraulic clamp body, a hydraulic unit used for controlling the hydraulic clamp body, a KBK sliding rail cantilever crane mechanism and an electric control unit used for controlling the KBK sliding rail cantilever crane mechanism, and the hydraulic clamp body is installed on the KBK sliding rail cantilever crane mechanism through an anti-falling piece and used for adjusting the position of the hydraulic clamp body. According to the correcting device for welding of the large-tonnage gantry, the hydraulic correcting mechanism is adopted and matched with the special clamp to correct the gantry, the problem that the large-tonnage gantry cannot be corrected through pure manpower can be effectively solved, and the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of portal frame welding, in particular to a correction device for large-tonnage portal frame welding. BACKGROUND

[0002] The existing large-tonnage portal frame models cover 5-10t, and the opening range of the portal frame covers 544-957mm. Due to welding deformation in the welding production process, correction is required. The current correction method is generally to correct by using a pure manual correction clamping tool, but the correction force required for large-tonnage portal frames is large, manual correction has limited effect and high labor intensity, and the correction coverage rate is less than 10%.

[0003] How to reduce the correction strength of the large-tonnage portal frame after welding is a technical problem to be solved by those skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] To solve the above technical problems, the utility model provides a correction device for large-tonnage portal frame welding, which adopts a hydraulic correction mechanism and is matched with a special clamp for portal frame correction, can effectively solve the problem that pure manual correction cannot be performed on large-tonnage portal frames, and reduces the labor intensity of employees.

[0005] The technical scheme provided by the utility model is as follows:

[0006] A correction device for large-tonnage portal frame welding, comprising a hydraulic clamp body, a hydraulic unit for controlling the hydraulic clamp body, a KBK sliding rail cantilever crane mechanism, and an electrical control unit for controlling the KBK sliding rail cantilever crane mechanism, the hydraulic clamp body is installed on the KBK sliding rail cantilever crane mechanism through an anti-falling piece for adjusting the position of the hydraulic clamp body.

[0007] Preferably, the anti-falling piece is a chain structure.

[0008] Preferably, a balancer is arranged on the anti-falling piece.

[0009] Preferably, the KBK sliding rail cantilever crane mechanism comprises a cantilever crane and a KBK sliding rail, the KBK sliding rail is arranged on the cantilever crane, and the upper end of the anti-falling piece is connected with the KBK sliding rail and can slide along the KBK sliding rail.

[0010] Preferably, the hydraulic clamp body comprises a chuck and a cylinder, the number of the chucks is two and they are symmetrically arranged at the left and right ends of the cylinder, and a lifting point and a pipe joint are arranged on the cylinder.

[0011] Preferably, the chuck is a C-shaped structure.

[0012] The present application has the following advantages over the prior art:

[0013] The correction device for large-tonnage portal welding in the application is composed of a hydraulic clamp body, a hydraulic unit, a KBK sliding rail cantilever crane mechanism and an electrical control unit, and the movement, compression and opening of the chuck are realized through the controller of the hydraulic clamp body and the electrical control unit. The chuck and the portal are fixed through the gauge, the chuck moving process drives the portal channel steel to deform within a certain range to realize the portal opening size correction, and the portal opening size after correction meets the drawing requirements. The correction device of the application is suitable for the portal correction of a forklift with a large tonnage of 5-10t, realizes labor-saving operation, meets the correction problem of different opening sizes of the portal, and reduces the working intensity of employees. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 It is a structural schematic view of the correction device for large-tonnage portal welding in the embodiment of the present application.

[0016] Figure 2 It is a structural schematic view of the hydraulic clamp body in the embodiment of the present application.

[0017] Figure 3 It is a structural schematic view of the electrical control unit in the embodiment of the present application.

[0018] Figure 4 It is a structural schematic view of the hydraulic unit in the embodiment of the present application.

[0019] Reference signs:

[0020] 1, hydraulic clamp body; 11, chuck; 12, oil cylinder; 13, lifting point; 14, pipeline joint; 2, hydraulic unit; 3, KBK sliding rail cantilever crane mechanism; 31, cantilever crane; 32, KBK sliding rail; 4, anti-falling piece; 5, balancer. DETAILED DESCRIPTION

[0021] In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] As Figures 1-4As shown, the utility model embodiment provides a kind of correction device for large tonnage portal welding, including hydraulic clamp body 1, hydraulic unit 2 for controlling hydraulic clamp body 1, KBK sliding rail cantilever crane mechanism 3 and electrical control unit for controlling KBK sliding rail cantilever crane mechanism 3, hydraulic clamp body 1 is installed on KBK sliding rail cantilever crane mechanism 3 by anti-falling piece 4 for adjusting the position of hydraulic clamp body 1, and anti-falling piece 4 is chain structure, and balance 5 is equipped on anti-falling piece 4.

[0023] In the embodiment, KBK sliding rail cantilever crane mechanism 3 includes cantilever crane 31 and KBK sliding rail 32, KBK sliding rail 32 is arranged on cantilever crane 31, and the upper end of anti-falling piece 4 is connected with KBK sliding rail 32 and can slide along KBK sliding rail 32.Using KBK cantilever crane 31 and hydraulic clamp body 1 are used in combination, and the rated lifting capacity of cantilever crane 31 is 145kg, which solves the problem that the hydraulic clamp body is too heavy and the staff is inconvenient to take.

[0024] In the embodiment, hydraulic clamp body 1 includes chuck 11 and oil cylinder 12, the number of chuck 11 is two and symmetrically arranged at the left and right ends of oil cylinder 12, chuck 11 can be made of 45 steel material, and the material can reach HRC32 after quenching and tempering heat treatment, and lifting point 13 and pipe joint 4 are arranged on oil cylinder 12, so that hydraulic clamp body 1 can be conveniently lifted and taken through lifting point 13.Chuck 11 is of C-shaped structure, which is convenient for clamping the two ends of portal. The rated working pressure of hydraulic clamp body 1 can reach 30MPa, and the maximum correction force can reach 60t, so that effective opening correction of large tonnage portal can be realized.

[0025] The correction method of the large tonnage portal welding correction device in the embodiment is as follows: portal correction is divided into three steps: ① after portal body welding is completed, the portal body is lifted and sent to the ground by crane and turned over; ② the inner opening size of several points is manually measured; ③ the KBK sliding rail cantilever crane mechanism 3 is operated to take hydraulic clamp body 1 and place it at the required correction position at the position where the inner opening size is too small or too large, and the C-shaped chuck 11 is clamped at the portal channel steel position, so that the inner opening size of the portal body is opened / tightened to the required size on the drawing.

[0026] In the embodiment, facing different types of opening workpieces, the large tonnage portal welding correction device in the embodiment can be designed with two kinds of hydraulic clamp bodies 1, the stroke of 1# hydraulic clamp body 1 is 130mm, the cylinder diameter is 150mm, and the cylinder diameter is 85mm. The stroke of 2# hydraulic clamp body 1 is 300mm, the cylinder diameter is 150mm, and the cylinder diameter is 85mm. For the minimum size of portal opening 544mm, the maximum size of portal opening 957mm, and the case of large span, two different size oil cylinders 12 are selected to match the corresponding portal opening, so that the length of hydraulic clamp body 1 will not be too long, and deformation or fracture will not easily occur, and the stress is more stable.

[0027] The large tonnage portal welding correction device in the embodiment is suitable for the correction of full series of large tonnage portal products.

[0028] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A large tonnage gantry welding correction device, characterized by, The hydraulic clamp body (1), the hydraulic unit (2) for controlling the hydraulic clamp body (1), the KBK sliding rail cantilever crane mechanism (3) and the electrical control unit for controlling the KBK sliding rail cantilever crane mechanism (3), the hydraulic clamp body (1) is installed on the KBK sliding rail cantilever crane mechanism (3) through the anti-falling part (4) for adjusting the position of the hydraulic clamp body (1).

2. The correction device for large tonnage gantry welding according to claim 1, characterized in that, The anti-falling part (4) is a chain structure.

3. The correction device for large tonnage gantry welding according to claim 1, characterized in that, The anti-falling part (4) is provided with a balancer (5).

4. The correction device for large tonnage gantry welding according to claim 1 or 2 or 3, characterized in that, The KBK sliding rail cantilever crane mechanism (3) comprises a cantilever crane (31) and a KBK sliding rail (32), the KBK sliding rail (32) is arranged on the cantilever crane (31), and the upper end of the anti-falling part (4) is connected with the KBK sliding rail (32) and can slide along the KBK sliding rail (32).

5. The correction device for large tonnage gantry welding according to claim 1 or 2 or 3, characterized in that, The hydraulic clamp body (1) comprises a chuck (11) and an oil cylinder (12), the number of the chuck (11) is two and the chucks are symmetrically arranged at the left and right ends of the oil cylinder, and the oil cylinder (12) is provided with a lifting point (13) and a pipeline joint (14).

6. The correction device for large tonnage gantry welding according to claim 5, characterized in that, The chuck (11) is a C-shaped structure.

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