Polygonal jib welding rotary positioner

Abstract

The utility model relates to a polygonic boom welding rotary positioner, belongs to the technical field of welding tooling, and is characterized by comprising a driving overturning frame, a driven overturning frame, an intermediate connecting frame, a rolling support, a pressing frame and a power system, the driving overturning frame and the driven overturning frame are oppositely arranged and are connected through the intermediate connecting frame, form an overturning frame assembly, are used for the arm body to pass through and play a supporting role to the arm body, the pressing frame is installed in the overturning frame assembly and comprises a upper pressing frame and a lower pressing frame used in cooperation and is used for pressing and fixing the arm body, the rolling support supports the driving overturning frame and the driven overturning frame respectively and constitutes a rolling friction pair with the driving overturning frame and the driven overturning frame, and the power system drives the driving overturning frame, drives the overturning frame assembly and the arm body to rotate synchronously, discards long-term occupation of the crane or manual overturning, reduces the labor intensity, and is stable in structure, simple and convenient to use, low in manufacturing cost and economic and practical.

Description

Technical Field

[0001] This utility model relates to a polygonal boom welding rotary positioner, belonging to the field of welding tooling technology. Background Technology

[0002] The boom cylinder bracket of a knuckle boom truck-mounted crane is the main stress point for the power output of the boom's extension and retraction. Therefore, the welding quality of the cylinder bracket and its boom head components is crucial to structural stability. The welding angles of components such as the cylinder bracket, reinforcing plate, lifting lugs, and the end plate at the boom head cover a large range, requiring 360° rotation during welding to achieve the optimal welding angle and weld bead formation. Therefore, the ease and accuracy of boom angle changes during welding are key to welding efficiency and quality.

[0003] There are generally two methods currently used: (1) Use a crane or F wrench to flip the boom, but the angle of the boom flip is uncontrollable and cannot guarantee the best welding angle. At the same time, the crane is occupied for a long time and the flipping efficiency is low. (2) Using a lifting chain turning machine for turning, although the turning efficiency and angle can be effectively controlled, damage to the arm body by the chain is unavoidable. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a polygonal boom welding rotary positioner to solve the rotational displacement problem during polygonal boom welding.

[0005] The technical solution of this utility model is as follows: A polygonal boom welding rotary positioner is characterized by comprising: an active tilting frame, a driven tilting frame, an intermediate connecting frame, a rolling support, a clamping frame, and a power system; the active tilting frame and the driven tilting frame are arranged opposite to each other and connected by the intermediate connecting frame to form a tilting frame assembly, which is used for the boom to pass through and to support the boom. The clamping frame is installed on the tilting frame assembly and includes an upper clamping frame and a lower clamping frame used in conjunction to clamp and fix the arm body; the rolling support supports the active tilting frame and the driven tilting frame respectively, and forms a rolling friction pair with them; the power system drives the active tilting frame, driving the tilting frame assembly and the arm body to rotate synchronously.

[0006] The above solution is mainly used for welding the boom body of a polygonal crane. The boom body is clamped by the tilting frame assembly, which can achieve 360° rotation and can be stably stopped at any angle, so that the welding part is always in the best welding posture, improving welding quality and efficiency. The active tilting frame and the driven tilting frame are connected by an intermediate connecting frame, so that the tilting frame assembly has a certain length and ensures the stability and synchronization of the mechanism when the boom body rotates.

[0007] Furthermore, the power system, serving as the power output component of the tilting mechanism, includes: a geared motor, a drive shaft, and a gear. The geared motor drives and connects to the drive shaft, and the gear is sleeved outside the drive shaft. The geared motor can be a self-locking geared motor, transmitting power to the drive shaft via a coupling. The drive shaft is mounted on rolling supports at both ends using bearings, and the middle of the drive shaft is fixed to the gear via a key structure. The gear meshes with the rack of the active tilting frame. This eliminates the need for long-term overhead crane or manual tilting, reducing labor intensity.

[0008] Furthermore, the active tilting frame is a tilting frame that directly interacts with the power system, comprising: a circular main frame and two rings of supporting protrusions and a rack on the circumference of the circular main frame; the two rings of supporting protrusions are arranged in parallel and roll in cooperation with the corresponding rolling guide sleeves on the rolling support; the rack is located between the two rings of supporting protrusions and meshes with the gears of the power system for transmission. The circular main frame consists of a large arc-shaped main rotating frame and a small arc-shaped rotating sealing door. One end of the rotating sealing door is connected to one end of the main rotating frame through a rotating assembly, and the other end of the rotating sealing door is connected to the other end of the main rotating frame through a locking assembly, thereby forming a stable circular rotating body.

[0009] The driven tilting frame has no central rack, and the rest of the structure is consistent with the active tilting frame, including: a circular sub-frame and two rings of supporting protrusions on the circumference of the circular sub-frame. The two rings of supporting protrusions are arranged in parallel and roll in cooperation with the corresponding rolling guide sleeves on the rolling support. Similarly, the circular sub-frame is composed of a large arc-shaped main rotating frame and a small arc-shaped rotating sealing door. One end of the rotating sealing door is connected to one end of the main rotating frame through a rotating assembly, and the other end of the rotating sealing door is connected to the other end of the main rotating frame through a locking assembly, thereby forming a stable circular rotating body.

[0010] In the above scheme, the tilting frame assembly serves as the main carrier for clamping the arm and driving its synchronous rotation. Through the rotating door, rotating components (including the rotating shaft, etc.), and locking components (including fastening bolts, etc.), the rotating door is closed and opened, making the corresponding tilting frame into an "openable door" structure. After "opening the door", a C-shaped entrance is formed, which facilitates the loading and unloading of the arm. The supporting protrusion is circular, and its outer circular surface is used to roll with the rolling guide sleeve of the rolling support, which facilitates the rotation of the tilting frame.

[0011] Furthermore, the rolling support includes: an active support frame, a driven support frame, and a rolling guide sleeve; the tops of the active support frame and the driven support frame are respectively arc-shaped, and rolling guide sleeves are respectively provided at both ends of the arc-shaped top of the active support frame, and similarly, rolling guide sleeves are respectively provided at both ends of the arc-shaped top of the driven support frame.

[0012] In the above scheme, the rolling guide sleeve and the support protrusion of the tilting frame form a rolling friction pair. When the equipment is running, the outer circular surface of the support protrusion presses on the circumferential surface of the rolling guide sleeve to support the tilting frame in the rotating state.

[0013] Furthermore, the intermediate connecting frame includes: a main frame of the connecting frame formed by connecting an upper crossbeam, a lower crossbeam, a left column, and a right column; the left column and the right column are respectively connected to the active flipping frame and the driven flipping frame through two connecting blocks, so that the flipping frame and the intermediate connecting frame become a whole rotating structure.

[0014] Furthermore, the clamping frame also includes: a lead screw, a crank handle, a pair of linear guide rails, and a connecting plate; there are two upper clamping frames, which are respectively installed on the active tilting frame and the driven tilting frame; the pair of linear guide rails are respectively installed on the left and right columns, and the connecting plate is respectively connected to the sliders of the two linear guide rails; there are two lower clamping frames, which are respectively installed on both ends of the connecting plate; The lead screw connects the upper and lower crossbeams, the crank handle is connected to the screw end of the lead screw, and the middle part of the connecting plate is connected to the nut of the lead screw. Rotating the crank handle causes the connecting plate to move along the linear guide rail through the lead screw, thereby causing the lower clamping frame to move up and down, changing the distance between the upper and lower clamping frames.

[0015] In the above scheme, two linear guide rails are symmetrically arranged, and a lead screw is set in the middle. By rotating the lead screw (screw) with a crank, the lower clamping frame is raised and lowered along the linear guide rail, thereby clamping and releasing the arm.

[0016] Furthermore, the upper clamping frame (the part in contact with the arm body) is provided with an upper V-shaped pad that matches the arm body structure, and the lower clamping frame (the part in contact with the arm body) is provided with a lower V-shaped pad that matches the arm body structure; the upper and lower V-shaped pads are detachable and replaceable, and are connected to the upper and lower clamping frames respectively by bolts or other detachable methods, which can adapt to polygonal arms at different angles. After clamping, the two are in surface contact, and cooperate with the upper clamping frame on the rotating frame to achieve the arm body clamping action, without relative displacement, and without damage to the surface of the arm body during rotation.

[0017] Before using this invention, select upper and lower V-shaped pads with angles corresponding to the boom structure of different machine models; during use: ① Open the rotating sealing door locking assembly of the main and driven flipping brackets, open the rotating sealing door, insert the corresponding arm body, then close the rotating sealing door and lock the sealing door; ②Then, rotate the crank on the intermediate connecting frame, adjust the position of the lower clamping frame by raising and lowering it, and adjust the arm body to be as close as possible to the center of the tilting frame. Then adjust the position of the lower clamping frame so that the upper and lower clamping frames clamp the arm body. ③ Start the reduction motor, which drives the tilting frame assembly to rotate to a suitable angle through gears and racks, so as to achieve flat or angled welding of all welds; ④ After welding is completed, open the rotating sealing door and take out the arm body.

[0018] This utility model rotary positioner can achieve 360° rotation and work stably at any angle; it is designed with replaceable V-shaped pads to adapt to polygonal arms at different angles; it eliminates the need for long-term overhead crane or manual turning, reducing labor intensity; it has a stable structure, is simple and convenient to use, and has low manufacturing cost, making it economical and practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the power system in this utility model; Figure 3 This is a schematic diagram of the structure of the rolling support in this utility model; Figure 4 This is a schematic diagram of the active tilting frame in this utility model; Figure 5 This is a schematic diagram of the structure of the intermediate connecting frame in this utility model; Figure 6 This is a diagram showing the usage state of the rotary positioner of this utility model (the diagram shows the initial state when the arm to be welded is clamped into the positioner; the welding seam of the arm head and arm tail to be welded is rotated to the flat welding or horizontal welding position by adjusting the positioner). In the diagram: 1. Active tilting frame; 2. Driven tilting frame; 3. Intermediate connecting frame; 4. Rolling support; 5. Pressing frame; 6. Power system; 7. Gear motor; 8. Drive shaft; 9. Gear; 10. Coupling; 11. Active support frame; 12. Driven support frame; 13. Rolling guide sleeve; 14. Support ridge; 15. Rack; 16. Main rotating frame; 17. Rotating sealing door; 18. Rotating assembly; 19. Locking assembly; 20. Upper crossbeam; 21. Lower crossbeam; 22. Left column; 23. Right column; 24. Connecting block; 25. Upper pressing frame; 26. Lower pressing frame; 27. Lead screw; 28. Handle; 29. ​​Linear guide rail; 30. Connecting plate; 31. Bearing; 32. Upper V-shaped pad; 33. Lower V-shaped pad; 34. Arm body. Detailed Implementation

[0020] A polygonal boom welding rotary positioner, such as Figure 1 As shown, the assembly includes: an active tilting frame 1, a driven tilting frame 2, an intermediate connecting frame 3, a rolling support 4, a clamping frame 5, and a power system 6. The active and driven tilting frames are arranged opposite to each other and connected by the intermediate connecting frame to form a tilting frame assembly, which is used for the boom to pass through and to support the boom. The rolling support supports the active and driven tilting frames respectively. The power system drives the active tilting frame, causing the tilting frame assembly and the boom to rotate synchronously.

[0021] Power system, such as Figure 2 As shown, it includes: a geared motor 7, a drive shaft 8, and a gear 9. The geared motor transmits power to the drive shaft through a coupling 10. The two ends of the drive shaft are mounted on rolling supports using bearings 31. The middle part of the drive shaft is fixed to the gear through a flat key structure. The gear meshes with the rack of the drive tilting frame.

[0022] Rolling supports, such as Figure 3 As shown, it includes: an active support frame 11, a driven support frame 12, and a rolling guide sleeve 13; the tops of the active support frame and the driven support frame are respectively arc-shaped, and rolling guide sleeves are respectively provided at both ends of the arc-shaped tops. The rolling guide sleeves and the support protrusions of the tilting frame form a rolling friction pair. When the equipment is running, the outer circular surface of the support protrusions presses on the circumferential surface of the rolling guide sleeve to support the tilting frame in the rotating state.

[0023] Active tilting frame, such as Figure 4As shown, it includes: a circular main frame and two rings of supporting protrusions 14 and a ring of racks 15 disposed on the circumference of the circular main frame; the two rings of supporting protrusions are arranged in parallel and roll in cooperation with the corresponding rolling guide sleeves on the rolling support; the rack is located between the two rings of supporting protrusions and meshes with the gears of the power system for transmission; the circular main frame is composed of a large arc-shaped main rotating frame 16 and a small arc-shaped rotating sealing door 17, one end of the rotating sealing door is hinged to one end of the main rotating frame through a rotating assembly 18 (including a rotating shaft, etc.), and the other end of the rotating sealing door is connected to the other end of the main rotating frame through a locking assembly 19 (including bolts, etc.), forming an openable and closable rotating sealing door.

[0024] The driven tilting frame lacks the central ring of toothed racks; the rest of the structure is identical to that of the active tilting frame.

[0025] Intermediate connecting frame, such as Figure 5 As shown, it includes: a main frame of the connecting frame formed by connecting the upper crossbeam 20, the lower crossbeam 21, the left column 22, and the right column 23; the left column and the right column are respectively connected to the active tilting frame and the passive tilting frame through two connecting blocks 24, so that the tilting frame and the middle connecting frame become a whole rotating structure.

[0026] In one embodiment of this utility model, the clamping frame includes two upper clamping frames 25 and two lower clamping frames 26 used in cooperation, as well as a lead screw 27, a crank handle 28, a pair of linear guide rails 29, and a connecting plate 30; the two upper clamping frames are respectively installed on the active flipping frame and the driven flipping frame; the pair of linear guide rails 29 are respectively installed on the left and right columns, the connecting plate 30 is respectively connected to the sliders of the two linear guide rails, and the two lower clamping frames are respectively installed at both ends of the connecting plate.

[0027] The lead screw connects the upper and lower crossbeams, the crank handle is connected to the screw end of the lead screw, and the middle part of the connecting plate is connected to the nut of the lead screw. Rotating the crank handle causes the connecting plate to move along the linear guide rail through the lead screw, thereby causing the lower clamping frame to move up and down, changing the distance between the upper and lower clamping frames, and realizing the clamping and loosening of the arm body.

[0028] In one embodiment of this utility model, the upper clamping frame is provided with an upper V-shaped pad 32 that matches the structure of the arm body at the contact part with the arm body, and the lower clamping frame is provided with a lower V-shaped pad 33 that matches the structure of the arm body at the contact part with the arm body; the upper and lower V-shaped pads are detachable and replaceable, and are respectively connected to the upper and lower clamping frames with bolts, which can adapt to polygonal arms with different angles.

Claims

1. A polygonal boom welding rotary positioner, characterized in that, include: The system includes an active tilting frame, a driven tilting frame, an intermediate connecting frame, a rolling support, a clamping frame, and a power system. The active and driven tilting frames are arranged opposite to each other and connected by an intermediate connecting frame to form a tilting frame assembly, which is used for the arm to pass through and to support the arm. The clamping frame is installed on the tilting frame assembly and includes an upper clamping frame and a lower clamping frame used in conjunction to clamp and fix the arm body; the rolling support supports the active tilting frame and the driven tilting frame respectively, and forms a rolling friction pair with them; the power system drives the active tilting frame, driving the tilting frame assembly and the arm body to rotate synchronously.

2. The polygonal boom welding rotary positioner according to claim 1, characterized in that, The power system includes: a geared motor, a drive shaft, and gears; the geared motor drives and connects to the drive shaft, and the gears are sleeved outside the drive shaft.

3. A polygonal boom welding rotary positioner according to claim 2, characterized in that, The rolling support includes: an active support frame, a driven support frame, and a rolling guide sleeve; the tops of the active support frame and the driven support frame are respectively arc-shaped, and rolling guide sleeves are respectively provided at both ends of the arc-shaped top of the active support frame, and similarly, rolling guide sleeves are respectively provided at both ends of the arc-shaped top of the driven support frame.

4. A polygonal boom welding rotary positioner according to claim 3, characterized in that, The active tilting frame includes: a circular main frame and two rings of supporting protrusions and a rack on the circumference of the circular main frame; the two rings of supporting protrusions are arranged in parallel and roll in cooperation with the corresponding rolling guide sleeves on the rolling support; the rack is located between the two rings of supporting protrusions and meshes with the gears of the power system for transmission. The circular main frame consists of a large arc-shaped main rotating frame and a small arc-shaped rotating sealing door. One end of the rotating sealing door is connected to one end of the main rotating frame through a rotating assembly, and the other end of the rotating sealing door is connected to the other end of the main rotating frame through a locking assembly.

5. A polygonal boom welding rotary positioner according to claim 4, characterized in that, The driven tilting frame includes: a circular sub-frame and two rings of supporting protrusions on the circumference of the circular sub-frame. The two rings of supporting protrusions are arranged in parallel and roll in cooperation with the corresponding rolling guide sleeves on the rolling support. The circular sub-frame consists of a large arc-shaped main rotating frame and a small arc-shaped rotating sealing door. One end of the rotating sealing door is connected to one end of the main rotating frame through a rotating assembly, and the other end of the rotating sealing door is connected to the other end of the main rotating frame through a locking assembly.

6. A polygonal boom welding rotary positioner according to claim 1 or 5, characterized in that, The intermediate connecting frame includes a main frame formed by connecting an upper crossbeam, a lower crossbeam, a left column, and a right column; the left column and the right column are respectively connected to the active tilting frame and the passive tilting frame through connecting blocks.

7. A polygonal boom welding rotary positioner according to claim 6, characterized in that, The clamping frame also includes: a lead screw, a crank handle, a pair of linear guide rails, and a connecting plate; there are two upper clamping frames, which are respectively installed on the active tilting frame and the driven tilting frame; the pair of linear guide rails are respectively installed on the left and right columns, and the connecting plate is respectively connected to the sliders of the two linear guide rails; there are two lower clamping frames, which are respectively installed at both ends of the connecting plate; The lead screw connects the upper and lower crossbeams, the crank handle is connected to the screw end of the lead screw, and the middle part of the connecting plate is connected to the nut of the lead screw. Rotating the crank handle causes the connecting plate to move along the linear guide rail through the lead screw, thereby causing the lower clamping frame to move up and down, changing the distance between the upper and lower clamping frames.

8. A polygonal boom welding rotary positioner according to claim 7, characterized in that, The upper clamping frame is equipped with an upper V-shaped pad that matches the arm body structure, and the lower clamping frame is equipped with a lower V-shaped pad that matches the arm body structure. The upper and lower V-shaped pads are detachably connected to the corresponding clamping frames.

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