A welding device suitable for the front cone and middle cylinder of a concrete mixing tank

Abstract

The present invention discloses a device for welding the front cone and the middle cylinder of a concrete mixing tank, comprising: a platform, a guide column, a rounding mechanism and a clamp. When assembling, the first cylinder section is first placed on the assembly mechanism, and the cylinder section is constrained to be coaxial with the assembly mechanism by the rounding mechanism. Then the second cylinder section is placed on the first cylinder section, and the second cylinder section is constrained to be coaxial with the assembly mechanism. After the two cylinder sections are coaxial, the top of the second cylinder section is clamped and pressed downward by a guide shaft that can be lifted and lowered, and after the two cylinder sections are fitted in place, spot welding is started at the junction of the two cylinder sections. The present invention provides a device for welding the front cone and the middle cylinder of a concrete mixing tank. When the two cylinder sections are assembled and spot welded, the two cylinder sections are constrained to be coaxial and can adapt to the assembly of cylinder sections of various diameters and heights without the need to replace a large number of special tooling.

Description

Technical Field

[0001] The invention relates to a butt welding device, in particular to a butt welding device suitable for a front cone and a middle cylinder assembly of a concrete mixing tank. Background Art

[0002] During the production of concrete mixing tanks, the welding process of the cylinder segments must ensure the coaxiality and roundness of the tank body. In actual production, a one-to-one special fixture is used to round the bottom cylinder segment, and then another cylinder segment is hoisted to the top of the bottom cylinder segment and stacked, and finally external spot welding is performed at the joints between the cylinder segments.

[0003] Most of the existing tooling is manual, huge in size, and heavy in weight. The installation is labor-intensive, time-consuming, and inefficient. In addition, a large number of hoisting operations are required by cranes during installation, which is very dangerous. At the same time, most of the existing tooling is special and cannot be changed in diameter. Therefore, multiple sets of tooling are required to meet the needs of daily production. The increase in the number of tooling requires a large area for storage. When spot welding, the tooling is only stacked and positioned on the butt joint surface. When the butt joint surface is poorly connected, the coaxiality of the tank body cannot be guaranteed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a welding device suitable for the front cone and middle cylinder of a concrete mixing tank.

[0005] The technical solution of the present invention is: a device for welding the front cone and the middle cylinder of a concrete mixing tank, comprising:

[0006] The platform comprises a guide seat, a reinforcing rib, and a stopper platform. A mounting hole is provided in the middle of the platform, a guide seat is fixedly inserted in the mounting hole, a hollow portion is left in the guide seat, a reinforcing rib is provided on the outer wall of the guide seat, and a stopper platform is provided on the platform and outside the reinforcing rib;

[0007] The guide column comprises a first-level lifting servo cylinder, a cylinder mounting seat, a first-level lifting guide column, a second-level lifting servo cylinder, and a second-level lifting guide column. The first-level lifting guide column is sleeved in the hollow part of the guide seat. The cylinder mounting seat is fixedly arranged inside the first-level lifting guide column. The lower end and the upper end of the cylinder mounting seat are respectively fixedly arranged with a first-level lifting servo cylinder and a second-level lifting servo cylinder. The piston rod of the first-level lifting servo cylinder is fixedly connected to the guide seat, and the piston rod of the second-level lifting servo cylinder is fixedly connected to the second-level lifting guide column.

[0008] A circular supporting mechanism, wherein the circular supporting mechanisms are provided in plurality and are circumferentially distributed on the disc of the first-level lifting guide column, each of the circular supporting mechanisms comprises a hydraulic cylinder, a slider, a slide seat, a reducing block, a cylinder seat and a limit block, and a limit block is provided between every two adjacent circular supporting mechanisms, the slide seat and the cylinder seat are both fixed on the disc and the cylinder seat is located on the inner side of the slide seat, a slider is slidably connected in the slide seat, a reducing block for simultaneously supporting the second barrel section and the first barrel section at the weld is fixedly provided at one end of the outer side of the slider, and the cylinder body and the piston rod of the hydraulic cylinder are respectively fixedly connected to the slider and the cylinder seat at both ends.

[0009] The hydraulic cylinder drives the sliding block and the reducing block to move to change the diameter of the support circle. By replacing the reducing block, the curvature and taper of different cylinder sections can be adapted.

[0010] The clamp comprises a clamp body and a clamp claw. The clamp body is fixedly arranged inside the top end of the secondary lifting guide column. The clamp body is connected and fixedly arranged on the top wall of the secondary lifting guide column. The clamp claw extends and moves toward the outside of the clamp body.

[0011] Preferably, the stop platform is formed by a plurality of annular protruding guide ribs arranged at a certain distance.

[0012] Preferably, the piston rod of the first-stage lifting servo cylinder is fixedly connected to the guide seat through a connecting rod.

[0013] Preferably, the piston rod of the secondary lifting servo cylinder is fixedly connected to the secondary lifting guide column through a connecting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) By designing a positioning device for assembling the cylinder sections of a concrete mixing tank, when welding is performed during the production process of the concrete mixing tank, the two cylinder sections can be coaxially positioned by the positioning device, and the second cylinder section and the first cylinder section at the weld can be supported simultaneously by the reducing block.

[0016] (2) This device uses a hydraulic lifting guide column to coaxially position and press two inverted stacked cylinder sections.

[0017] (3) A variable diameter support mechanism is installed in the middle of the guide column. The hydraulic cylinder drives the slider and the reducer to move to change the diameter of the support circle. By replacing the reducer, it can adapt to the curvature and taper of different cylinder sections. It can adapt to cylinder sections of various diameters, avoiding the use of one cylinder section with one diameter tooling, thus solving the problem of tooling occupying a large amount of space.

[0018] (4) A clamp is installed at the top of the guide column. The clamp passes through the large round hole at the top of the second cylinder section, and the clamp extends outward to hook the top of the second cylinder section. When the guide column descends, the clamp can press the cylinder section tightly. This avoids the use of counterweights to press the cylinder section, and the safety factor is higher during production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the overall internal explosion of the present invention.

[0021] Figure 3 for Figure 2 A partial enlarged view of the .

[0022] Figure 4 It is an overall front cross-sectional view of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figures 1 to 4 As shown, a device suitable for welding the front cone and the middle cylinder of a concrete mixing tank comprises a platform 1, a guide column 3, a rounding mechanism 2 and a clamp 4.

[0025] The platform 1 includes a guide seat 11, a reinforcing rib 12, and a stop platform 13. A mounting hole is opened in the middle of the platform 1, and the guide seat 11 is fixedly inserted in the mounting hole. The guide seat 11 has a hollow portion, and the outer wall of the guide seat 11 is provided with a reinforcing rib 12. A stop platform 13 is provided on the platform 1 and located on the outer side of the reinforcing rib 12.

[0026] The stop platform 13 is formed by a plurality of annular protruding guide ribs arranged at a certain distance.

[0027] The guide column 3 includes a first-level lifting servo cylinder 31, a cylinder mounting seat 32, a first-level lifting guide column 33, a second-level lifting servo cylinder 34, and a second-level lifting guide column 35. The first-level lifting guide column 33 is sleeved in the hollow part of the guide seat 11, and the cylinder mounting seat 32 is fixedly provided inside the first-level lifting guide column 33. The lower end and the upper end of the cylinder mounting seat 32 are respectively fixedly provided with the first-level lifting servo cylinder 31 and the second-level lifting servo cylinder 34. The piston rod of the first-level lifting servo cylinder 31 is fixedly connected to the guide seat 11 through a connecting rod, and the piston rod of the second-level lifting servo cylinder 34 is fixedly connected to the second-level lifting guide column 35 through a connecting rod.

[0028] The present invention has a plurality of support mechanisms 2 which are circumferentially distributed on the disc 25 of the first-level lifting guide column 33. Each support mechanism 2 includes a hydraulic cylinder 21, a slider 22, a slide seat 23, a reducer 24, a cylinder seat 26, and a limit block 27. A limit block 27 is provided between every two adjacent support mechanisms 2. The slide seat 23 and the cylinder seat 26 are fixed on the disc 25 and the cylinder seat 26 is located on the inner side of the slide seat 23. The slide seat 23 is slidably connected with the slide seat 22. A reducer 24 for simultaneously supporting the second barrel section 5 and the first barrel section 6 at the weld is fixedly provided at one end of the outer side of the slide seat 22. The cylinder body and the piston rod of the hydraulic cylinder 21 are respectively fixedly connected to the slider 22 and the cylinder seat 26 at both ends.

[0029] The hydraulic cylinder 21 drives the slide block 22 and the reducing block 24 to move so as to change the diameter of the support circle. By replacing the reducing block 24, the curvature and taper of different cylinder sections can be adapted.

[0030] The clamp 4 includes a clamp body 41 and a clamp claw 42. The clamp body 41 is fixed inside the top end of the secondary lifting guide column 35. The clamp body 41 is connected and fixed to the top wall of the secondary lifting guide column 35. The clamp claw 42 extends and moves outward from the clamp body 41.

[0031] The working principle of the present invention is:

[0032] The first cylinder section 6 is placed on the stop platform 13, and the stop constrains the circular position and roundness of the bottom of the first cylinder section 6;

[0033] The first cylinder section 6 is placed on the platform 1, and the support mechanism 2 fixed on the first-level lifting guide column 33 is raised and lowered by the first-level lifting guide column 33 to adjust the appropriate height, so that the height of the disc 25 is basically consistent with the height of the first cylinder section 6. The hydraulic cylinder 21 drives the slider 22 and the reducing block 24 to move to change the support circle diameter. By replacing the reducing block 24, it can adapt to the curvature and taper of different cylinder sections;

[0034] After positioning the first barrel section 6, the second barrel section 5 is stacked and placed on the first barrel section 6. The secondary lifting guide column 35 is raised to fit with the large circular hole on the top of the second barrel section 5, and the clamp 4 is passed through the large circular hole on the top of the second barrel section 5, so that the second barrel section 5 and the secondary lifting guide column 35 are coaxial. The clamping claw 42 is extended outward to hook the top of the second barrel section 5, and the secondary lifting servo cylinder 34 is retracted to press the two barrel sections tightly, coaxially, and concentrically with the fitting surfaces, and finally spot weld the joint of the two barrel sections;

[0035] In summary, the diameter and height can be changed to meet the clamping needs of tanks with different diameters and heights; one device can adapt to a variety of workpieces, saving a lot of tooling storage space; there is no need to use counterweights to press the cylinder section, and automatic clamping is more efficient and safer.

[0036] The lower part of the mechanism is a platform 1, on which a stop platform 13 for positioning the first cylinder segment 6 is installed. The guide column 3 in the middle of the mechanism is hydraulically driven and can be raised and lowered, and is used to coaxially guide and press the second cylinder segment 5 and the first cylinder segment 6. A support mechanism 2 is installed in the middle of the guide column 3, which can support the second cylinder segment 5 and the first cylinder segment 6 at the same time to ensure that the two contact surfaces are concentric. A secondary lifting guide column 35 is installed inside the liftable guide column 3 to adapt to the height change of the second cylinder segment 5. A hydraulically driven clamp 4 is installed on the top of the secondary lifting guide column 35 to fix the second cylinder segment 5. When the secondary lifting guide column 35 retracts, the second cylinder segment 5 and the first cylinder segment 6 are pressed.

[0037] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of rights of the present invention. Therefore, modifications, equivalent changes, improvements, etc. made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A welding device suitable for the front cone and middle cylinder of a concrete mixing tank, characterized in that: include: The platform comprises a guide seat, a reinforcing rib, and a stopper platform. A mounting hole is provided in the middle of the platform, a guide seat is fixedly inserted in the mounting hole, a hollow portion is left in the guide seat, a reinforcing rib is provided on the outer wall of the guide seat, and a stopper platform is provided on the platform and outside the reinforcing rib; A guide column, wherein the guide column comprises a first-level lifting servo cylinder, a cylinder mounting seat, a first-level lifting guide column, a second-level lifting servo cylinder, and a second-level lifting guide column. The first-level lifting guide column is sleeved in the hollow portion of the guide seat. The cylinder mounting seat is fixedly arranged inside the first-level lifting guide column. The lower end and the upper end of the cylinder mounting seat are respectively fixedly arranged with a first-level lifting servo cylinder and a second-level lifting servo cylinder. The piston rod of the first-level lifting servo cylinder is fixedly connected to the guide seat, and the piston rod of the second-level lifting servo cylinder is fixedly connected to the second-level lifting guide column. A rounding mechanism, wherein the rounding mechanism has a plurality of them, which are circumferentially distributed on the disc of the first-level lifting guide column, each of the rounding mechanisms comprises a hydraulic cylinder, a slider, a slide seat, a reducing block, a cylinder seat, and a limit block, and a limit block is provided between every two adjacent rounding mechanisms, the slide seat and the cylinder seat are both fixedly arranged on the disc and the cylinder seat is located on the inner side of the slide seat, a slider is slidably connected in the slide seat, and a reducing block for simultaneously supporting the second barrel section and the first barrel section at the weld is fixedly arranged at one end of the outer side of the slider, and the cylinder body and the piston rod of the hydraulic cylinder are respectively fixedly connected to the slider and the cylinder seat; The hydraulic cylinder drives the slider and the reducer to move to change the diameter of the support circle. By replacing the reducer, it can adapt to the curvature and taper of different cylinder sections. A clamp, the clamp comprising a clamp body and a clamp claw, the clamp body is fixedly arranged inside the top end of the secondary lifting guide column, the clamp body is connected and fixedly arranged on the top wall of the secondary lifting guide column, and the clamp claw extends and moves outward of the clamp body; The stop platform is formed by a plurality of annular protruding guide ribs arranged at a certain distance; The piston rod of the first-stage lifting servo oil cylinder is fixedly connected to the guide seat through a connecting rod.

2. The device for welding the front cone and the middle cylinder of a concrete mixing tank according to claim 1 is characterized in that: The piston rod of the secondary lifting servo oil cylinder is fixedly connected to the secondary lifting guide column through a connecting rod.

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