Clamping device of steel pipe joint welding machine and steel pipe joint welding machine

Abstract

The utility model discloses a clamping device of a steel pipe joint welding machine and the steel pipe joint welding machine, and relates to the technical field of joint welding machines. The clamping device is connected to the two sides of a gantry frame and comprises a base, a supporting base and a clamping mechanism. A supporting seat is connected to the base in a relatively moving mode, and the inward side of the supporting seat is connected with the clamping mechanism. The clamping mechanism is provided with at least two clamping cylinders, the clamping cylinders are spaced by a preset distance, and the distance between the two clamping cylinders in the vertical direction is gradually shortened from the outer side of the clamping device to the inner side of the clamping device. According to the steel pipe clamping device, different positions of the circumferential face of a steel pipe can be located, and the clamping mechanisms on the two sides can move relatively under the movement effect of the supporting base relative to the base so as to be suitable for clamping steel pipes of different sizes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the joint welding machine technical field, concretely relates to a kind of clamping device and steel pipe joint welding machine of steel pipe joint welding machine. BACKGROUND

[0002] The steel plate after folding forms steel material with larger length and periphery, and to meet the use requirement, two steel materials needing splicing need to be butt welded by steel pipe joint welding machine to form a steel pipe. In the use process of the existing steel pipe joint welding machine, the ends of the two half steel pipes are usually welded with the two ends of the connecting plate to realize preliminary locking, then the two half steel pipes are moved in the transmission device of the steel pipe joint welding machine, and the position of the steel pipe butt joint can face the welding assembly, and the splicing gap is welded by the welding assembly to realize the welding connection between the two half steel pipes.

[0003] However, the axial length of the steel pipe is long, and the steel pipe joint welding machine is easy to rotate in the circumferential direction during transmission of the steel pipe, and the axial direction of the steel pipe is easy to deviate, causing the gap position on the steel pipe to deviate from the welding assembly, which needs to be adjusted after stopping, reducing the work efficiency. Therefore, the prior art has a clamping assembly arranged to clamp the circumferential surface of the steel pipe to avoid the deviation of the position of the steel pipe. For example, the patent application No. CN201920902226.9, the patent name is a precise steel pipe joint welding mechanism for automobile, which discloses a press-in mechanism and a press-out mechanism and a supporting wheel, which can position the circumferential surface of the steel pipe, but the supporting wheel is arranged with wheel surface along the radial direction of the steel pipe and abuts against the circumferential surface of the steel pipe, therefore, the distance between the supporting wheels limits the size of the welded steel pipe, and cannot be applied to the clamping of steel pipes of different sizes, the press-in mechanism and the press-out mechanism include upper and lower pressure wheels, which are not suitable for the welding of non-circular steel pipes, and the wheel surface of the pressure wheel abuts against the circumferential surface of the steel pipe, which is easy to accelerate the wear between the wheel surface of the pressure wheel and the circumferential surface of the steel pipe when the size of the steel pipe deviates, thereby reducing the welding efficiency. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of clamping device and steel pipe joint welding machine of steel pipe joint welding machine, to solve the size limitation of the existing clamping device to steel pipe, cannot be applied to steel pipe of different sizes;Wheel surface and circumferential surface of steel pipe are rotatably connected, to accelerate the wear between steel pipe.

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

[0006] The clamping device of the steel pipe joint welding machine is connected to the two sides of the gantry frame and comprises a base, a support seat and a clamping mechanism.

[0007] The clamping device of the steel pipe joint welding machine has the following additional technical features:

[0008] The clamping mechanism comprises a fixed plate, a first clamping cylinder and a second clamping cylinder.

[0009] The first clamping cylinder has a first fixed end connected to the fixed plate and a first abutting end extending out of the fixed plate and capable of abutting against the outer wall of the steel pipe.

[0010] The second clamping cylinder has a second fixed end connected to the fixed plate and a second abutting end extending out of the fixed plate and capable of abutting against the outer wall of the steel pipe.

[0011] The end of the second abutting end is formed with a guide inclined surface abutting against the outer side of the steel pipe.

[0012] The support seat comprises a support seat body and a sliding module vertically distributed and connected to the support seat body.

[0013] One side of the bottom of the support seat body is connected with a sliding plate, and the other side of the bottom of the support seat body is connected with a sliding block.

[0014] The moving assembly comprises a fixed seat, a driving device and a gear assembly connected to the fixed seat.

[0015] The steel pipe joint welding machine further comprises a pushing device having oppositely arranged pushing and fixed segments.

[0016] The application also relates to a steel pipe joint welding machine which comprises a base, a gantry frame, a moving support mechanism, a moving welding mechanism and the clamping device of the steel pipe joint welding machine.

[0017] Thanks to the above technical scheme, the application has the following beneficial effects:

[0018] 1. A clamping device of a steel pipe joint welding machine, connected to the two sides of a gantry frame, comprising a base, a support seat and a clamping mechanism; the support seat is movably connected to the base, and the clamping mechanism is connected to the inward side of the support seat; the clamping mechanism comprises at least two clamping cylinders, the clamping cylinders are separated by a preset distance, and the distance between the two clamping cylinders gradually shortens from the outside of the clamping device to the inside of the clamping device in the vertical direction.

[0019] The clamping device is arranged on the two sides of the gantry frame, so that the two sides of the steel pipe in the radial direction can be effectively clamped, the steel pipe can be stably supported, deviation of the steel pipe in the radial direction can be prevented, the position of the joint seam after welding can be further prevented from deviating, and the working efficiency and quality of welding can be improved; the two sides of the gantry frame are respectively provided with the clamping device, and the clamping device on each side comprises a base, a support seat and a clamping mechanism; the base is used to connect the clamping device to the gantry frame, the support seat is used to move along the base, the clamping devices on the two sides can move relative to each other, the clamping device can move inward towards the steel pipe and move outward away from the steel pipe, and the clamping and loosening of the steel pipe can be realized.

[0020] Furthermore, the clamping mechanism includes at least two clamping cylinders with a preset distance between them. The vertical distance between the two clamping cylinders gradually decreases from the outside to the inside of the clamping device, i.e., from the side furthest from the steel pipe to the side closest to the steel pipe. This arrangement allows the clamping cylinder located at the upper part of the vertical direction to tilt downwards, while the clamping cylinder located at the lower part of the vertical direction can tilt upwards. This enables the two clamping cylinders to position different locations on the circumference of the steel pipe. The clamping mechanisms on both sides can move relative to each other under the action of the relative base movement of the support seat, making it suitable for clamping steel pipes of different sizes. This allows for both positioning of the steel pipe and positioning of steel pipes of different sizes, further expanding the applicable size range of welded steel pipes. Moreover, the clamping cylinders at different positions can further enhance the clamping of the steel pipe at different positions, making the force on the steel pipe evenly distributed throughout the welding machine and improving the stable support of the steel pipe. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a structural diagram of a clamping device for a steel pipe seam welding machine connected to a gantry frame, according to one embodiment of this application.

[0023] Figure 2 This is a structural diagram of a clamping device for a steel pipe seam welding machine according to one embodiment of this application, taken from a first angle.

[0024] Figure 3 This is a structural diagram of a clamping device for a steel pipe seam welding machine according to one embodiment of this application, taken from a second angle.

[0025] Figure 4 This is a structural diagram of a steel pipe joint welding machine according to one embodiment of this application;

[0026] In the picture,

[0027] 1. Base; 2. Support base; 21. Support base body; 22. Sliding module; 3. Clamping mechanism; 31. Fixed plate; 32. First clamping cylinder; 33. Second clamping cylinder; 4. First abutting end; 5. Second abutting end; 6. Support roller; 7. Slider; 8. Moving component; 81. Fixed base; 82. Drive device; 83. Gear assembly; 9. Pushing device; 10. Gantry frame; 11. Base; 12. Moving welding mechanism; 13. Moving support mechanism. Detailed Implementation

[0028] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can be practiced in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0029] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the present application.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description of the terms "embodiment", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0033] Embodiment 1

[0034] The present application relates to a clamping device of a steel pipe joint welding machine, which is connected to the two sides of the gantry frame 10, such as Figures 1-4As shown, it comprises a base 1, a support seat 2 and a clamping mechanism 3; the support seat 2 is movably connected to the base 1, and the clamping mechanism 3 is connected to the inner side of the support seat 2; the clamping mechanism 3 has at least two clamping cylinders, and the distance between the clamping cylinders is gradually shortened from the outer side of the clamping device to the inner side of the clamping device.

[0035] The clamping device is arranged on both sides of the gantry frame 10, and because the steel pipe moves in the gantry frame 10, the clamping device arranged on both sides of the gantry frame 10 can effectively clamp the two sides of the steel pipe in the radial direction, thereby stably supporting the steel pipe and preventing the steel pipe from deviating in the radial direction, further effectively preventing the position of the welded joint from deviating, and improving the working efficiency and quality of welding.

[0036] The gantry frame 10 has a clamping device on each side, and each clamping device comprises a base 1, a support seat 2 and a clamping mechanism 3; the base 1 is used to connect the entire clamping device to the gantry frame 10, and the support seat 2 is used to move along the base 1, so that the clamping devices on both sides can move relative to each other to move inward toward the steel pipe and move outward away from the steel pipe, thereby clamping and releasing the steel pipe.

[0037] The clamping mechanism 3 comprises at least two clamping cylinders, and the distance between the clamping cylinders is gradually shortened from the outer side of the clamping device to the inner side of the clamping device, i.e. the distance between the two clamping cylinders gradually shortens from the side away from the steel pipe to the side close to the steel pipe. In this way, the upper clamping cylinder in the vertical direction can be tilted downward, the lower clamping cylinder in the vertical direction can be tilted upward, or the upper clamping cylinder in the vertical direction can be tilted downward and the lower clamping cylinder in the vertical direction can be placed horizontally, so that the two clamping cylinders can be positioned at different positions of the circumference of the steel pipe, and the clamping mechanisms 3 on both sides can move relative to each other under the movement of the support seat 2 relative to the base 1, so as to be suitable for clamping steel pipes of different sizes, thereby achieving positioning of the steel pipe and positioning of steel pipes of different sizes, further expanding the applicable range of the size of the welded steel pipe, and the clamping cylinders at different positions can further enhance the clamping of the steel pipe at different positions, so that the stress on the steel pipe is evenly distributed in the entire welding machine, improving the stable support of the steel pipe.

[0038] As a preferred embodiment, as shown in Figures 2-3 The clamping mechanism 3 comprises a fixed plate 31, a first clamping cylinder 32 and a second clamping cylinder 33; the fixed plate 31 is connected to the support seat 2 and can move up and down along the support seat 2; the first clamping cylinder 32 and the second clamping cylinder 33 are respectively connected to the fixed plate 31 along the vertical direction of the fixed plate 31.

[0039] The first clamping cylinder 32 and the second clamping cylinder 33 are connected to the fixed plate 31 and vertically distributed in up and down directions, so as to contact the upper and lower positions of the outer wall of the steel pipe, thereby enhancing the stability of the steel pipe and preventing the steel pipe from deviating in the radial direction. The fixed plate 31 can move up and down along the support base 2, so as to adjust the position of the contact with the outer wall of the steel pipe, thereby being suitable for clamping steel pipes of different sizes. The height of the steel pipe in the radial direction is different, so the height of the first clamping cylinder 32 and the second clamping cylinder 33 needs to be adjusted accordingly.

[0040] The first clamping cylinder 32 and the second clamping cylinder 33 can be the same or different in structure. When the first clamping cylinder 32 and the second clamping cylinder 33 are different in structure:

[0041] The first clamping cylinder 32 has a first fixed end connected to the fixed plate 31 and a first abutting end 4 extending out of the fixed plate 31 and capable of abutting against the outer wall of the steel pipe. The first abutting end 4 preferably has a flat structure, and more preferably, the end face of the first abutting end 4 is provided with an elastic layer to prevent abrasion of the outer wall of the steel pipe.

[0042] The second clamping cylinder 33 has a second fixed end connected to the fixed plate 31 and a second abutting end 5 extending out of the fixed plate 31 and capable of abutting against the outer wall of the steel pipe.

[0043] The second abutting end 5 can have various embodiments, which are not limited to the following embodiments described in the present application:

[0044] Embodiment one: The end of the second abutting end 5 is formed with a guide inclined surface abutting against the outer side of the steel pipe. More specifically, the end face of the second abutting end 5 has a bent surface with two guide inclined surfaces connected at a certain angle to form the bent surface. Since the second clamping cylinder 33 is located at the lower position of the steel pipe, it is located at the position where the upper and lower circumferential surfaces of the steel pipe meet. In order to partially contact the upper circumferential surface of the steel pipe, the end face of the second abutting end 5 is provided with a bent surface having a certain angle. One of the two guide inclined surfaces can contact the upper outer wall of the steel pipe, and the other can contact the lower outer wall of the steel pipe.

[0045] In the second embodiment, the end of the second abutting end 5 is connected with a positioning rod, two ends of the positioning rod are movably connected with clamping blocks respectively, the clamping blocks are formed with arc surfaces at the inner sides thereof, and the clamping blocks can move up and down along the positioning rod. Since the inner sides of the two oppositely arranged clamping blocks are provided with the arc surfaces, the outer circumferential surfaces of steel pipes with different radial sizes can be wrapped, and the applicable range of the steel pipes is increased. Specifically, the positioning rod can be provided with threads, the clamping blocks are threadedly connected with the positioning rod, and the two ends of the positioning rod are provided with threads with opposite screw directions, so that the clamping blocks at the two ends can move relatively to clamp steel pipes with different radial sizes.

[0046] As a preferred embodiment, the support seat 2 comprises a support seat body 21 and a sliding module 22 distributed vertically in the support seat body 21; the fixed plate 31 is movably connected to the support seat body 21 through the sliding module 22; and the support seat body 21 is movably connected to the base 1 through the moving assembly 8.

[0047] The support seat body 21 is in a conical structure, and the inside of the support seat body 21 is hollow, so that the sliding module 22 can be placed on both sides of the inside of the support seat body 21, and the fixed plate 31 is slidably connected to the support seat body 21 through the sliding module 22.

[0048] Further, one side of the bottom of the support seat body 21 is connected with a sliding plate, and the other side of the bottom of the support seat body 21 is connected with the sliding block 7.

[0049] One side of the bottom of the support body body is vertically connected with a sliding plate, which can be connected with the moving assembly 8 as described below, and the sliding plate is used to realize the movement of the support body body relative to the base 1; the other side of the support body body is symmetrically provided with the sliding block 7 along the length direction of the support body body, the sliding block 7 is used to contact with the fixed seat 81, and the sliding block 7 is slidably connected to the sliding rail of the fixed seat 81, so as to realize the smooth sliding of the support body body along the base 1.

[0050] Further, the moving assembly 8 comprises a fixed seat 81, a driving device 82 and a gear assembly 83 connected to the fixed seat 81; the fixed seat 81 is connected to the bottom of the support seat body 21, and the sliding plate is threadedly connected with the output shaft of the gear assembly 83 in the fixed seat 81; the output shaft is driven to rotate by the driving device 82 to drive the sliding plate to move, so that the support seat body 21 moves relative to the base 1.

[0051] The fixed seat 81 is connected to the bottom of the support body in a frame structure, and the inside of the fixed seat 81 is connected with a driving device 82, which preferably adopts a motor. The other side of the fixed seat 81 is connected with a gear assembly 83, which includes a large gear and a small gear. The large gear is in meshing transmission with the gear on the motor rotating shaft of the motor, and the small gear is in meshing transmission with the large gear. The small gear is connected with an output shaft. The fixed seat 81 has a partition plate inside, which separates the inside of the fixed seat 81 into a first cavity and a second cavity. The driving device 82 and the large gear and the small gear of the gear assembly 83 are located in the first cavity. The output shaft connected with the small gear is rotatably connected to the partition plate through a bearing. One side of the output shaft extends into the first cavity, and the other side extends into the second cavity. The other end of the extension direction of the output shaft is rotatably connected to the inside of the fixed seat 81 through a bearing. The sliding plate is arranged in the second cavity and is threadedly connected with the output shaft. The motor drives the large gear to rotate, thereby driving the small gear to rotate, so that the output shaft rotates. The output shaft acts as a lead screw, and when the output shaft rotates, it can drive the sliding plate to move along the axial direction of the output shaft, thereby driving the support body on the top of the sliding plate to move. The moving assemblies 8 on both sides can respectively drive the corresponding support seat bodies 21 to move, thereby realizing the adjustment of the distance to adapt to the clamping of steel pipes of different sizes.

[0052] As a preferred embodiment, the steel pipe joint welding machine further comprises a pushing device 9, which has oppositely arranged pushing and fixed segments. The fixed segment is connected to the gantry frame 10 of the steel pipe joint welding machine. The pushing segment can extend and retract towards one side of the support seat 2 to push the support seat 2 to move along the base 1.

[0053] The pushing device 9 can adopt a hydraulic cylinder or an air cylinder. When a hydraulic cylinder is adopted, the piston rod of the hydraulic cylinder serves as the pushing segment, and the cylinder body of the hydraulic cylinder serves as the fixed segment. The fixed segment of the hydraulic cylinder is fixedly connected to the gantry frame 10, which is located outside the support seat 2. The pushing segment faces the side of the steel pipe and directly faces the support seat 2. When in use, when the piston rod of the driving hydraulic cylinder moves outward, it can further push the support seat 2 to move by the elongation of the pushing segment. When the support seat 2 needs to move away from the steel pipe, the pushing segment will retract back to reserve space for the outward movement of the support seat 2 and also limit the outward movement of the support seat 2 to prevent it from moving beyond the safe range.

[0054] Embodiment 2

[0055] The present application also relates to a steel pipe joint welding machine, such as Figure 4As shown, including base 11, gantry frame 10, mobile support mechanism 13, mobile welding mechanism 12 and the clamping device of the above-mentioned one steel pipe joint welding machine;Base 11 is connected with gantry frame 10, clamping device is connected to gantry frame 10;Mobile support mechanism 13 extends along the two sides of gantry frame 10, for supporting and driving steel pipe to move along the extension direction of mobile support structure;Mobile welding mechanism 12 is connected to the top of gantry frame 10 opposite to the steel pipe.

[0056] Gantry frame 10 is arranged on the two sides of the mobile support structure, and the top of the gantry frame 10 is provided with a mobile welding machine, and the mobile welding mechanism 12 can move up and down along the vertical direction to weld the steel pipe below, and the mobile support structure has a plurality of support rollers 6 extending in the direction perpendicular to the gantry frame 10, and the support rollers 6 can rotate under the driving action of the driving mechanism so as to drive the steel pipe held on the support rollers 6 to move along the axis direction of the steel pipe;In the process of moving the steel pipe, the clamping device symmetrically arranged on the two sides of the gantry frame 10 can clamp the two sides of the outer periphery of the steel pipe in the radial direction, so as to limit the radial direction of the steel pipe, and the cooperation of the mobile support structure, the mobile welding mechanism 12 and the clamping device realizes the joint welding of the steel pipe in the axial direction.

[0057] The parts not described in the utility model can be realized by using or referring to the existing technology.

[0058] Each embodiment in the specification adopts progressive mode, and the same and similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0059] The above only describes the embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the claim range of the utility model.

Claims

1. A clamping device of a steel pipe joint welding machine, connected to both sides of a portal frame, characterized in that, The device comprises a base, a supporting seat and a clamping mechanism; the supporting seat is movably connected to the base, and the clamping mechanism is connected to the inner side of the supporting seat; the clamping mechanism comprises at least two clamping cylinders, which are spaced apart by a preset distance, and the distance between the two clamping cylinders gradually decreases from the outer side of the clamping device to the inner side of the clamping device.

2. A clamping device for a steel pipe girth welding machine according to claim 1, characterized in that The clamping mechanism comprises a fixed plate, a first clamping cylinder and a second clamping cylinder. The fixed plate is connected to the supporting seat and can move up and down along the supporting seat; the first clamping cylinder and the second clamping cylinder are respectively connected to the fixed plate along the vertical direction of the fixed plate.

3. A clamping device for a steel pipe girth welding machine according to claim 2, characterized in that The first clamping cylinder has a first fixed end connected to the fixed plate and a first abutting end extending out of the fixed plate and capable of abutting against the outer wall of the steel pipe.

4. A clamping device for a steel pipe girth welding machine according to claim 2, characterized in that The second clamping cylinder has a second fixed end connected to the fixed plate and a second abutting end extending out of the fixed plate and capable of abutting against the outer wall of the steel pipe.

5. A clamping device for a steel pipe girth welding machine according to claim 4, characterized in that The end of the second abutting end is formed with a guide inclined surface abutting against the outer side of the steel pipe.

6. A clamping device for a steel pipe girth welding machine according to claim 2, characterized in that The supporting seat comprises a supporting seat body and a sliding module vertically distributed in the supporting seat body. The fixed plate is movably connected to the supporting seat body through the sliding module; and the supporting seat body is movably connected to the base through a moving assembly.

7. A clamping device for a steel pipe girth welding machine according to claim 6, characterized in that One side of the bottom of the supporting seat body is connected with a sliding plate, and the other side of the bottom of the supporting seat body is connected with a sliding block.

8. A clamping device for a steel pipe girth welding machine according to claim 7, characterized in that The moving assembly comprises a fixed seat, a driving device and a gear assembly connected to the fixed seat. The fixed seat is connected to the bottom of the supporting seat body, and the sliding plate is threadedly connected to the output shaft of the gear assembly in the fixed seat. The output shaft is driven to rotate by the driving device to drive the sliding plate to move, so that the supporting seat body moves relative to the base.

9. A clamping device for a steel pipe girth welding machine according to claim 1, characterized in that, The device further comprises a pushing device having oppositely arranged pushing segments and fixed segments; the fixed segments are connected to the gantry frame of the steel pipe joint welding machine; and the pushing segments can extend and retract towards one side of the supporting seat to push the supporting seat to move along the base.

10. A steel pipe joint welding machine characterized by comprising: The device comprises a base, a gantry frame, a moving supporting mechanism, a moving welding mechanism and the clamping device of any one of claims 1-9; the gantry frame is connected to the base, and the clamping device is connected to the gantry frame; the moving supporting mechanism extends along the two sides of the gantry frame to support and drive the steel pipe to move along the extension direction of the moving supporting mechanism; and the moving welding mechanism is connected to the top of the gantry frame and faces the steel pipe.

Images