Precast pile butt joint welding device

Abstract

The utility model discloses a precast pile butt joint welding device which comprises a lifting unit and a welding unit arranged on the lifting unit, and the lifting unit comprises a horizontal lifting ring clamped on the outer circle of a precast pile, a supporting arm connected with the lifting ring and a welding unit arranged on the lifting ring and capable of rotating around the precast pile. After the precast pile is held by the lifting unit, a working platform is formed, and the welding unit rotates around the precast pile on the working platform and is used for welding a seam, so that the flatness of the seam can be ensured, the welding quality is also easily ensured, and meanwhile, the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding machinery, in particular to a prefabricated pile joint welding device. Background Art

[0002] In the current piling construction, a drilling rig is first used to drill a hole, and then a pile driver is used to press the precast pile into the drilled hole. Since the length of the precast pile is fixed, when the hole depth is large, the precast piles need to be pressed into the hole one by one, and the two adjacent precast piles need to be welded together.

[0003] The usual practice is that when the lower precast pile enters the hole, the pile driver clamps the precast pile, and then the crane lifts another precast pile to the top of the lower precast pile. After alignment, the operator uses a welding gun to weld the joint.

[0004] This welding method requires a high level of technical skills from the operators. The welding quality is greatly affected by human factors and it is easy to have defects such as uneven welds, pores, slag inclusions, etc., which affect the connection strength between the precast piles and reduce the welding efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a rotary welding device for solving the problem that the welding between prefabricated piles is greatly affected by human factors, the welding efficiency is low, and defects such as uneven welds are easily generated, thereby affecting the connection strength between the prefabricated piles.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A prefabricated pile butt joint welding device comprises a lifting unit and a welding unit arranged on the lifting unit. The lifting unit comprises a horizontal lifting ring clamped on the outer circle of the prefabricated pile, a support arm connected to the lifting ring, and a welding unit arranged on the lifting ring and rotatable around the prefabricated pile.

[0008] Furthermore, the lifting ring includes a second lifting plate, a first lifting plate and a third lifting plate which are hinged in sequence, the second lifting plate, the first lifting plate and the third lifting plate are all horizontally arranged, the second lifting plate, the first lifting plate and the third lifting plate are all fan-shaped, one of the second lifting plate, the first lifting plate and the third lifting plate is connected to one end of the support arm, and the second lifting plate, the first lifting plate and the third lifting plate form a closed circular ring when closed.

[0009] Furthermore, the inner sides of the second lifting plate, the first lifting plate and the third lifting plate are all provided with flanges protruding inwards, and the inner sides of the flanges are arc surfaces for clamping the precast piles.

[0010] Further, the support arm includes a fixed arm, an intermediate arm, and a lifting arm that are sequentially hinged, and one end of the lifting arm away from the intermediate arm is hinged to a lifting ring.

[0011] Further, the lifting arm includes an upper connecting rod, a lower connecting rod arranged parallel to the lower part of the upper connecting rod, a first end block arranged at one end of the upper connecting rod, and a second end block arranged at the other end of the upper connecting rod. The upper connecting rod and the lower connecting rod are of equal length. One end of the upper connecting rod and one end of the lower connecting rod are both hinged to the first end block, and the other end of the upper connecting rod and the other end of the lower connecting rod are both hinged to the second end block. The connecting lines of the hinged parts of the upper connecting rod, the lower connecting rod, the first end block, and the second end block form a parallelogram. The first end block is hinged to the intermediate arm, and the second end block is hinged to the lifting ring.

[0012] Further, a pneumatic strut is provided between the first end block and the upper connecting rod. One end of the pneumatic strut is hinged to a position of the upper connecting rod close to the second end block, and the other end is hinged to the first end block. The position where the pneumatic strut is hinged to the first end block is below the upper connecting rod.

[0013] Further, a buckle is provided between the second lifting plate and the third lifting plate.

[0014] Further, a horizontal supporting plate is provided at the joint of the first lifting plate and the second lifting plate and / or at the joint of the third lifting plate and the first lifting plate. The supporting plate is located below the first lifting plate and is fixedly connected to the bottom surface of the first lifting plate.

[0015] Further, a rib plate is fixedly arranged under the flange. After the first lifting plate, the second lifting plate, and the third lifting plate are closed, the surface of the rib plate close to the precast pile is in close contact with the surface of the precast pile.

[0016] Further, the welding unit is a welding robot with the model JJ-III-Q1 / J-W.

[0017] The positive effects of the present utility model are as follows:

[0018] 1. The present utility model is provided with a support arm and a lifting unit. The lifting unit is provided with a welding unit, and the welding unit is a welding robot. The lifting unit is provided with a second lifting plate, a first lifting plate, and a third lifting plate that are sequentially hinged. After the second lifting plate, the first lifting plate, and the third lifting plate hold the precast pile, an operation platform is formed. The welding robot rotates around the precast pile on the operation platform and welds the joints, so that the flatness of the weld can be ensured, the welding quality is also easy to ensure, and the welding efficiency is improved at the same time.

[0019] 2. The support arm includes a fixed arm, an intermediate arm, and a lifting arm. When welding is required, the lifting unit is brought close to the precast pile, and after welding is completed, the lifting unit is moved away from the precast pile to avoid affecting subsequent operations.

[0020] 3. The lifting arm is provided with an upper connecting rod, a lower connecting rod, a first end block and a second end block, which can drive the lifting unit to move up and down, thereby facilitating the alignment of the welding robot with the joint between the upper and lower prefabricated piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the lifting unit;

[0022] Figure 2 It is a schematic diagram of the structure of the bottom of the lifting ring;

[0023] Figure 3 This is a working diagram of the lifting ring when it is closed and clamped on the precast pile;

[0024] Figure 4 It is a schematic diagram of the utility model installed on a pile driver;

[0025] In the figure:

[0026] 1. Fixed arm; 2. Column; 3. Middle arm; 4. First end block; 5. Lower connecting rod; 6. Second end block; 7. Upper connecting rod; 8. Gas strut; 9. First lifting plate; 10. Second lifting plate; 11. Third lifting plate; 12. Flange; 13. Rib plate; 14. Support plate; 15. Hinge; 16. Buckle; 17. Precast pile; 18. Welding unit; 19. Gap. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figures 1 to 4 As shown, a prefabricated pile butt joint welding device includes a lifting unit and a welding unit 18 arranged on the lifting unit, wherein the lifting unit includes a horizontal lifting ring clamped on the outer circle of the prefabricated pile 17, a support arm connected to the lifting ring, and a welding unit 18 arranged on the lifting ring and rotatable around the prefabricated pile 17.

[0029] The lifting ring includes a second lifting plate 10, a first lifting plate 9 and a third lifting plate 11 which are hinged in sequence in a counterclockwise direction through a hinge 15. The second lifting plate 10, the first lifting plate 9 and the third lifting plate 11 are all arranged horizontally, and the second lifting plate 10, the first lifting plate 9 and the third lifting plate 11 are all fan-shaped, and the middle part of the outer side of the first lifting plate 9 is connected to one end of the support arm. The second lifting plate 10, the first lifting plate 9 and the third lifting plate 11 form a closed circular ring after being closed, and the other end of the support arm is fixedly connected to one of the columns 2 of the pile driver.

[0030] A buckle 16 is provided between the second lifting plate 10 and the third lifting plate 11. The welding unit 18 is a welding robot, model JJ-III-Q1 / J-W, which can be used for gas shielded welding and argon arc welding.

[0031] The working process of the present utility model is as follows:

[0032] 1. The buckle 16 is opened, the second lifting plate 10 and the third lifting plate 11 are opened, the second lifting plate 10, the first lifting plate 9 and the third lifting plate 11 are clamped at the joint of the upper and lower two precast piles 17, the buckle 16 is locked, and the second lifting plate 10, the first lifting plate 9 and the third lifting plate 11 hold the precast pile 17 tightly.

[0033] 2. The two rollers of the welding robot are abutted against the surface of the precast pile, the welding torch of the welding robot is aligned with the joint of the upper and lower two precast piles 17, the welding robot is started, and the welding robot is rotated around the precast pile 17 to weld the joint.

[0034] Since the welding robot rotates around the precast pile 17 on the horizontal lifting unit, the flatness of the weld can be guaranteed, the welding quality is also easy to guarantee, and the welding efficiency is improved at the same time.

[0035] Embodiment 2

[0036] The difference between this embodiment and Embodiment 1 is that:

[0037] The support arm includes a fixed arm 1, an intermediate arm 3 and a lifting arm hinged in sequence. One end of the lifting arm far from the intermediate arm 3 is hinged to the first lifting plate 9, and one end of the fixed arm 1 far from the intermediate arm 3 is fixedly connected to the column 2.

[0038] The fixed arm 1, the intermediate arm 3 and the lifting arm can drive the lifting unit to swing horizontally, so that the lifting unit is close to the precast pile 17 when welding is required, and the lifting unit is far from the precast pile 17 after welding is completed.

[0039] The lifting arm includes an upper connecting rod 7, a lower connecting rod 5 arranged in parallel below the upper connecting rod 7, a first end block 4 arranged at the left end of the upper connecting rod 7, and a second end block 6 arranged at the right end of the upper connecting rod 7. The upper connecting rod 7 and the lower connecting rod 5 are of equal length. The left ends of the upper connecting rod 7 and the lower connecting rod 5 are both hinged to the right part of the first end block 4. The right ends of the upper connecting rod 7 and the lower connecting rod 5 are both hinged to the left part of the second end block 6. The connecting lines of the hinged parts of the upper connecting rod 7, the lower connecting rod 5, the first end block 4 and the second end block 6 form a parallelogram. The left part of the first end block 4 is hinged to the intermediate arm 3, and the right part of the second end block 6 is hinged to the middle part of the outside of the first lifting plate 9.

[0040] The upper connecting rod 7, the lower connecting rod 5, the first end block 4 and the second end block 6 can drive the lifting unit to move up and down, so as to facilitate the alignment of the welding robot on the lifting unit with the joint between the upper and lower prefabricated piles 17. When the lifting unit moves up and down, it can be ensured that its top surface always remains in a horizontal state, thereby ensuring that the welding robot always aligns with the joint between the upper and lower prefabricated piles 17 during welding.

[0041] A pneumatic strut 8 is provided between the first end block 4 and the upper connecting rod 7. One end of the pneumatic strut 8 is hinged to the upper connecting rod 7 near the right end, and the other end is hinged to the first end block 4. The position where the pneumatic strut 8 is hinged to the first end block 4 is located below the upper connecting rod 7.

[0042] After the gas pressure strut 8 is provided, the weight of the lifting unit is balanced, so that the lifting unit is more labor-saving when moving up and down.

[0043] Example 3

[0044] The difference between this embodiment and embodiment 1 is that:

[0045] The inner sides of the second lifting plate 10 , the first lifting plate 9 and the third lifting plate 11 are all provided with flanges 12 protruding inwards, and the inner sides of the flanges 12 are arc surfaces for clamping the precast piles 17 .

[0046] When the precast pile 17 is sandwiched between the second lifting plate 10, the first lifting plate 9 and the third lifting plate 11, only the flange 12 is in contact with the precast pile 17, and a gap 19 is formed between the flanges 12 around the precast pile 17, so that the welding slag generated during welding can fall from the gap 19 and avoid accumulation on the second lifting plate 10, the first lifting plate 9 and the third lifting plate 11, which affects the normal welding operation.

[0047] The first lifting plate 9 is hinged to the second end block 6, and the fixed arm 1, the middle arm 3 and the lifting arm are hinged in sequence, so that the circumferential positions of the second lifting plate 10, the first lifting plate 9 and the third lifting plate 11 can be adjusted, and then the position of the gap 19 can be adjusted, so that the welding slag generated during welding can fall smoothly from the gap 19.

[0048] A horizontal support plate 14 is provided at the joint between the first lifting plate 9 and the second lifting plate 10 and at the joint between the third lifting plate 11 and the first lifting plate 9 . The support plate 14 is located below the first lifting plate 9 and is welded to the bottom surface of the first lifting plate 9 .

[0049] The supporting plate 14 can ensure that the second supporting plate 10, the first supporting plate 9 and the third supporting plate 11 are in the same horizontal plane after being folded, thereby facilitating the movement of the welding robot.

[0050] A rib plate 13 is fixedly arranged below the flange 12. After the first lifting plate 9, the second lifting plate 10 and the third lifting plate 11 are closed, the surface of the rib plate 13 close to the precast pile 17 is in close contact with the surface of the precast pile 17.

[0051] The rib plate 15 plays a supporting role, so that after the second lifting plate 10 and the third lifting plate 11 are closed, the upper surface is guaranteed to be perpendicular to the precast pile 17, which is convenient for the welding robot to weld.

[0052] The described embodiments above are described in more detail and specifically, expressing the preferred embodiments of the present invention. It is only used to illustrate the technical ideas and features of the present invention. Its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, it is not limited to the present invention only. The patent scope of the present invention cannot be limited only by this embodiment. That is, any equivalent changes or modifications made in accordance with the spirit disclosed by the present invention, for researchers or technicians in the field, within the structure of the present invention, local improvements within the system and changes and transformations between subsystems are still within the patent scope of the present invention. At present, the technical solution of this application has been pilot-tested, that is, small-scale experiments before large-scale production of the product; after the pilot test, user usage research has been carried out on a small scale, and the research results show that the user satisfaction is relatively high; now preparations are underway for the formal production and industrialization of the product, including research on intellectual property risk early warning.

Claims

1. A prefabricated pile joint welding device, characterized in that: The invention comprises a lifting unit and a welding unit (18) arranged on the lifting unit. The lifting unit comprises a horizontal lifting ring clamped on the outer circle of the prefabricated pile (17), a support arm connected to the lifting ring, and a welding unit (18) arranged on the lifting ring and rotatable around the prefabricated pile (17).

2. A prefabricated pile joint welding device according to claim 1, characterized in that: The lifting ring comprises a second lifting plate (10), a first lifting plate (9) and a third lifting plate (11) which are hinged in sequence; the second lifting plate (10), the first lifting plate (9) and the third lifting plate (11) are all arranged horizontally; the second lifting plate (10), the first lifting plate (9) and the third lifting plate (11) are all fan-shaped; one of the second lifting plate (10), the first lifting plate (9) and the third lifting plate (11) is connected to one end of the supporting arm; the second lifting plate (10), the first lifting plate (9) and the third lifting plate (11) form a closed circular ring when closed.

3. A prefabricated pile joint welding device according to claim 2, characterized in that: The inner sides of the second lifting plate (10), the first lifting plate (9) and the third lifting plate (11) are all provided with flanges (12) protruding inwards, and the inner sides of the flanges (12) are arc surfaces for clamping the precast piles (17).

4. The prefabricated pile joint welding device according to claim 1, characterized in that: The support arm comprises a fixed arm (1), an intermediate arm (3) and a lifting arm which are hinged in sequence, and one end of the lifting arm away from the intermediate arm (3) is hinged to the lifting ring.

5. A prefabricated pile joint welding device according to claim 4, characterized in that: The lifting arm comprises an upper connecting rod (7), a lower connecting rod (5) arranged parallel to and below the upper connecting rod (7), a first end block (4) arranged at one end of the upper connecting rod (7), and a second end block (6) arranged at the other end of the upper connecting rod (7); the upper connecting rod (7) and the lower connecting rod (5) are of equal length; one end of the upper connecting rod (7) and one end of the lower connecting rod (5) are both hinged to the first end block (4); the other end of the upper connecting rod (7) and the other end of the lower connecting rod (5) are both hinged to the second end block (6); the connecting line of the hinged parts of the upper connecting rod (7), the lower connecting rod (5), the first end block (4) and the second end block (6) forms a parallelogram; the first end block (4) is hinged to the intermediate arm (3), and the second end block (6) is hinged to the lifting ring.

6. A prefabricated pile joint welding device according to claim 5, characterized in that: A pneumatic strut (8) is provided between the first end block (4) and the upper connecting rod (7); one end of the pneumatic strut (8) is hinged to a portion of the upper connecting rod (7) close to the second end block (6), and the other end is hinged to the first end block (4); the position where the pneumatic strut (8) is hinged to the first end block (4) is located below the upper connecting rod (7).

7. The prefabricated pile joint welding device according to claim 2, characterized in that: A buckle (16) is provided between the second lifting plate (10) and the third lifting plate (11).

8. The prefabricated pile joint welding device according to claim 2, characterized in that: A horizontal support plate (14) is provided at the joint between the first support plate (9) and the second support plate (10) and / or at the joint between the third support plate (11) and the first support plate (9); the support plate (14) is located below the first support plate (9) and is fixedly connected to the bottom surface of the first support plate (9).

9. The prefabricated pile joint welding device according to claim 3, characterized in that: A rib plate (13) is fixedly arranged below the flange (12); after the first supporting plate (9), the second supporting plate (10) and the third supporting plate (11) are closed, a side of the rib plate (13) close to the precast pile (17) is in close contact with the surface of the precast pile (17).

10. The prefabricated pile joint welding device according to claim 1, characterized in that: The welding unit (18) is a welding robot, model JJ-III-Q1 / JW.

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