End face bevel cutting mechanism of tower crane standard knot supporting rod

Abstract

The invention discloses an end face bevel cutting mechanism for tower crane standard knot stay bars, which comprises a laser cutting mechanism, stay bar clamping mechanisms and a stay bar feeding mechanism, a laser head of the laser cutting mechanism can translate, a plurality of groups of stay bar clamping mechanisms are arranged below the laser cutting mechanism, the stay bar clamping mechanisms are used for clamping the stay bars, and the stay bar feeding mechanism is used for feeding the stay bars. Movement and rotation of the supporting rod are achieved through the supporting rod clamping mechanism; and the inclined surface and the cambered surface of the end surface can be conveniently machined when the supporting rod is cut off.

Description

Technical Field

[0001] The present invention relates to the field of processing equipment for tower crane standard sections, and particularly to an end face bevel cutting mechanism for the struts of tower crane standard sections. Background Art

[0002] The current struts are cut from long hollow pipes into multiple segments. Each cut strut needs to be further cut to form an inclined surface, which facilitates the fitting of both ends of the strut to the outer wall of the main limb, and then welding is carried out. After such cutting, the end face still needs to be processed again, increasing the operation process (the end face of the strut still needs to be processed for the inclined surface and arc surface after cutting), reducing the production efficiency. At the same time, the inclined surface and arc surface of the end face need to be processed manually by a flame cutting machine and a laser cutting machine, increasing the labor cost and equipment cost. At the same time, the processing of the above struts is basically carried out by workers using traditional processes and equipment, which does not conform to the current trend of intelligent processing and reducing the labor intensity of workers. Summary of the Invention

[0003] Aiming at the deficiencies of the above prior art, the present invention proposes an end face bevel cutting mechanism for the struts of tower crane standard sections, which facilitates the processing of the end face inclined surface and arc surface when the strut is cut, shortening the processing time of the strut, improving the processing efficiency, and realizing intelligent processing at the same time.

[0004] To achieve the above object, the solution of the present invention: an end face bevel cutting mechanism for the struts of tower crane standard sections, including a laser cutting mechanism, a strut clamping mechanism and a strut feeding mechanism. The laser head of the laser cutting mechanism can translate. Multiple groups of strut clamping mechanisms are installed below the laser cutting mechanism. The strut clamping mechanism clamps the strut, and the movement and rotation of the strut are realized through the strut clamping mechanism. Multiple groups of strut clamping mechanisms are located on the front and rear sides of the laser cutting mechanism. A strut feeding mechanism is arranged on the strut clamping mechanism, and the strut is pushed to the strut clamping mechanism through the strut feeding mechanism. A waste collection trough is installed below the laser cutting mechanism; The strut clamping mechanism includes a mounting seat, a side pressing wheel and a swinging pressing wheel. Among them, a mounting seat is installed on the waste collection trough, a rotating ring is installed on the mounting seat in a rotatable connection manner, a rotating power component is arranged between the rotating ring and the mounting seat, and a side pressing wheel and a swinging pressing wheel are installed on the rotating component, and the strut is clamped by the side pressing wheel and the swinging pressing wheel; The strut feeding mechanism includes a pushing component and a lifting component. A liftable lifting component is installed behind multiple groups of strut clamping mechanisms. A pushing component is installed at one end of the lifting component away from the strut clamping mechanism. The pushing component is that a pushing plate is installed on the piston rod of the pushing hydraulic cylinder, and the pushing plate abuts against one end of the strut.

[0005] Preferably, there are two swing pressing wheels, upper and lower. Each swing pressing wheel is installed at one end of a swing arm through a bearing. A power driving component is installed on the swing pressing wheel to rotate the swing pressing wheel through the power driving component. The other end of the swing arm is hinged to a rotating ring. A swing component is arranged between the rotating ring and the swing arm. There are two side pressing wheels which are arranged oppositely. A telescopic component is arranged between each side pressing wheel and a rotating component. The two side pressing wheels are synchronously closed and separated through the telescopic component. The stay bar is clamped by the side pressing wheels and the swing pressing wheels.

[0006] Preferably, the swing component includes a linkage gear, a clamping hydraulic cylinder and a sliding rod. The clamping hydraulic cylinder is installed on the rotating ring. A sliding rod is fixed outside the swing arm. A linkage rod is installed on the piston rod of the clamping hydraulic cylinder. Two long strip-shaped holes are formed in the linkage plate. The sliding rod extends into the long strip-shaped holes of the linkage plate. Mutually meshing linkage gears are installed at the hinge joint between the swing arm and the rotating ring, and the swing arms are synchronously separated and closed; the telescopic component includes a sliding rectangular rod, a lifting plate and a slider. Sliders are fixed on the two side walls of each sliding rectangular rod. Lifting plates are arranged on both sides of the sliding rectangular rod. An inclined groove with an outward inclination at the top is formed in the lifting plate. The slider extends into the inclined groove. The tops of multiple lifting plates are fixed on the same cross bar. A pressing hydraulic cylinder is arranged between the cross bar and the rotating ring.

[0007] Preferably, the rotation power component includes a toothed ring and a rotation stepper motor. The rotation stepper motor is installed on the mounting base. A toothed ring is fixed on the outer wall of the rotating ring. A gear is installed on the output shaft of the rotation stepper motor. The gear meshes with the toothed ring. An angular displacement sensor is installed at one end of the side pressing wheel to detect the displacement of the stay bar; the power driving component includes a belt pulley and a displacement stepper motor. The displacement stepper motor is installed on the swing arm. Belt pulleys are installed on the output shaft of the displacement stepper motor and one end of the swing pressing wheel on the same swing arm. Multiple belt pulleys are driven by a synchronous belt.

[0008] Preferably, the lifting component is multiple rollers arranged side by side. The two ends of multiple rollers are installed on a lifting frame through bearings. A lifting hydraulic cylinder is arranged between the lifting frame and the ground; a limiting component is installed on the lifting component. When the lifting frame rises, the limiting component moves the stay bar towards the middle. The limiting component includes a vertical limiting plate, a moving ring and a swing rod. A moving ring is sleeved on the roller. Multiple moving rings on the same side are connected to the same straight rod. A vertically extending vertical limiting plate is fixed on each straight rod. Vertically extending columns are arranged on both sides of the lifting frame. A swing rod is hinged between the top of the column and the straight rod.

[0009] Compared with the prior art, the advantages of the present invention are as follows: it is convenient to realize the processing of the end face inclined plane and the arc surface when the support rod is cut, which shortens the processing time of the support rod, improves the processing efficiency, and realizes intelligent processing at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a top view of the present invention.

[0011] Figure 2 It is a schematic diagram of the position of the laser cutting mechanism and the support rod clamping mechanism of the present invention.

[0012] Figure 3 It is a schematic diagram of the rotating ring, the side pressing wheel and the swinging pressing wheel of the support rod clamping mechanism of the present invention.

[0013] Figure 4 It is a schematic diagram of the side pressing wheel and the telescopic assembly of the present invention.

[0014] Figure 5 It is a schematic diagram of the lifting assembly, the roller and the limiting assembly.

[0015] Wherein, 1. Laser cutting mechanism; 2. Support rod clamping mechanism; 3. Mounting seat; 4. Rotating ring; 5. Side pressing wheel; 6. Telescopic assembly; 7. Sliding rectangular rod; 8. Lifting plate; 9. Slide block; 10. Oblique groove; 11. Cross bar; 12. Tightening hydraulic cylinder; 13. Swinging pressing wheel; 14. Swinging arm; 15. Swinging assembly; 16. Linkage gear; 17. Clamping hydraulic cylinder; 18. Sliding rod; 19. Linkage rod; 21. Support rod feeding mechanism; 22. Pushing assembly; 23. Pushing plate; 24. Lifting assembly; 25. Roller; 26. Lifting frame; 27. Lifting hydraulic cylinder; 28. Limiting assembly; 29. Vertical limiting plate; 30. Moving ring; 31. Swinging rod; 32. Waste collection tank; 33. Rotating power assembly; 34. Tooth ring; 35. Rotating stepper motor; 36. Gear; 37. Angular displacement sensor; 38. Power driving assembly; 39. Belt pulley; 40. Displacement stepper motor; 41. Synchronous belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Now, with reference to the accompanying drawings, the present invention will be further described.

[0017] As Figure 1As described in , an end face bevel cutting mechanism for a tower crane standard section strut includes a laser cutting mechanism 1, a strut clamping mechanism 2, and a strut feeding mechanism 21. The laser head of the laser cutting mechanism 1 can move horizontally left and right. Multiple groups of strut clamping mechanisms 2 are installed below the laser cutting mechanism 1. The strut clamping mechanism 2 clamps the strut, and the movement and rotation of the strut are achieved through the strut clamping mechanism 2. Multiple groups of strut clamping mechanisms 2 are located on the front and rear sides of the laser cutting mechanism 1. A strut feeding mechanism 21 is arranged on the strut clamping mechanism 2, and the strut is pushed to the strut clamping mechanism 2 through the strut feeding mechanism 21. A waste collection tank 32 is installed below the laser cutting mechanism 1. In this way, the strut is clamped by multiple groups of strut clamping mechanisms 2, and then the strut feeding mechanism 21 transports the strut forward. At the same time, the strut clamping mechanism 2 can realize the rotation of the strut. When the strut rotates, the laser cutting mechanism 1 cuts the strut.

[0018] The strut clamping mechanism 2 includes a mounting seat 3, a side pressing wheel 5, and a swinging pressing wheel 13. The bottom of the waste collection tank 32 is installed on the ground by bolts. Multiple groups of side-by-side mounting seats 3 are installed on the waste collection tank 32 by bolt fastening. A rotating ring 4 is installed on the mounting seat 3 by means of rotational connection (that is, a rotating ring 4 is installed on the top of the mounting seat 3 through a bearing and a bearing seat, and the rotating rings 4 on multiple mounting seats 3 are coaxial). A rotating power assembly 33 is arranged between the rotating ring 4 and the mounting seat 3, and the rotation of the rotating ring 4 is achieved through the rotating power assembly 33. A side pressing wheel 5 and a swinging pressing wheel 13 are installed on the rotating assembly, and the strut is clamped by the side pressing wheel 5 and the swinging pressing wheel 13, so as to clamp the strut. The strut is located at the center of the rotating ring 4, and the strut is coaxial with the central axis of the rotating ring 4. The strut rotates coaxially with the rotating ring 4, and the strut is cut into multiple sections by the laser cutting mechanism 1. The strut is divided into a circular support rod and a rectangular strut. When cutting the circular strut, only the rotating ring 4 needs to rotate. When cutting the rectangular strut, the laser head needs to move horizontally left and right, so that the rectangular strut can be cut.

[0019] The pole feeding mechanism 21 includes a pushing component 22 and a lifting component 24. A liftable lifting component 24 is installed behind multiple groups of pole clamping mechanisms 2. A pushing component 22 is installed at one end of the lifting component 24 away from the pole clamping mechanism 2. The pushing component 22 is that a pushing plate 23 is installed on the piston rod of the pushing hydraulic cylinder, and the pushing plate 23 abuts against one end of the pole. Place the pole to be cut on the lifting component 24. When it is necessary to feed the pole onto the rotating ring 4, lift it up through the lifting component 24 so that the pole is coaxial with the rotating ring 4. Push the pole towards the rotating ring 4 through the pushing component 22, and clamp the pole through the side pressing wheel 5 and the swinging pressing wheel 13 on the pole. Clamping the pole by the side pressing wheel 5 and the swinging pressing wheel 13 does not affect the forward feeding of the pole.

[0020] There are two swinging pressing wheels 13, upper and lower. Each swinging pressing wheel 13 is respectively installed at one end of two swinging arms 14 through bearings. A power driving component 38 is installed on the swinging pressing wheel 13 to rotate the swinging pressing wheel 13 through the power driving component 38. The other end of the swinging arm 14 is hinged on the rotating ring 4, and the swinging arm 14 rotates with the rotating ring 4. A swinging component 15 is arranged between the rotating ring 4 and the swinging arm 14 to make the two swinging pressing wheels 13 approach each other through the swinging component 15. There are two side pressing wheels 5 and the side pressing wheels 5 are arranged oppositely. A telescopic component 6 is arranged between each side pressing wheel 5 and the rotating component to synchronously approach and separate the two side pressing wheels 5 through the telescopic component 6, and clamp the pole through the side pressing wheel 5 and the swinging pressing wheel 13.

[0021] The swing assembly 15 includes a linkage gear 16, a clamping hydraulic cylinder 17 and a sliding rod 18. The clamping hydraulic cylinder 17 is installed on the rotating ring 4 by bolt fastening. The sliding rod 18 is fixed to the outside of the swing arm 14 by welding. A linkage rod 19 is installed on the piston rod of the clamping hydraulic cylinder 17 by welding. Two long strip holes arranged up and down are opened on the linkage plate. The sliding rod 18 extends into the long strip holes of the linkage plate. The linkage gear 16 meshing with each other is installed by welding at the hinge of the swing arm 14 and the rotating ring 4. In this way, the two swing arms 14 swing in linkage, and the swing arms 14 are synchronously separated and closed. When working, the strut is pushed to the swing pressing wheel 13 by the pushing assembly 22. Through the retraction of the clamping hydraulic cylinder 17, the two swing arms 14 swing inward, so that the swing pressing wheel 13 positions and clamps the strut; the telescopic assembly 6 includes a sliding rectangular rod 7, The lifting plate 8 and the slider 9 are fixed with sliders 9 on both side walls of each sliding rectangular rod 7 by welding. The lifting plates 8 arranged on both sides of the sliding rectangular rod 7 are provided with inclined grooves 10 with the tops inclined outwardly. The sliders 9 extend into the inclined grooves 10 and the sliders 9 slide in the inclined grooves 10. When the lifting plate 8 is lifted, the sliders 9 move in the slide grooves, thus driving the sliding rectangular rod 7 to extend and retract. The tops of the multiple lifting plates 8 are fixed to the same cross bar 11 by bolts. A tightening hydraulic cylinder 12 is installed between the cross bar 11 and the rotating ring 4 by bolts. When the tightening hydraulic cylinder 12 retracts upward, the lifting plate 8 moves upward, so that the telescopic rod moves inward, so that the side pressing wheels 5 come together to clamp the struts, and when the tightening hydraulic cylinder 12 is lifted downward, the lifting plate 8 moves downward, so that the sliding rectangular rod 7 moves outward, and the side pressing wheels 5 move away from each other and open.

[0022] The rotary power assembly 33 includes a toothed ring 34 and a rotary stepper motor 35. The rotary stepper motor 35 is mounted on the mounting base 3. The toothed ring 34 is fixed to the circumferential outer wall of the rotary ring 4 by welding. A gear 36 is fixed to the output shaft of the rotary stepper motor 35 by welding. The gear 36 meshes with the toothed ring 34. An angular displacement sensor 37 is mounted on one end of the side pressing wheel 5 by bolt fastening. The displacement of the support rod is detected by the angular displacement sensor 37. When the support rod moves, the side pressing wheel 5 starts to rotate, driving the angular displacement sensor 37 to rotate. The angular displacement sensor 37 measures the rotation angle of the side pressing wheel 5. The angular displacement sensor 37 is connected and communicates with the PLC controller through a wireless module. The movement of the support rod is monitored by the PLC controller, which facilitates controlling the cutting length of the support rod. The power drive assembly 38 includes a belt pulley 39 and a displacement stepper motor 40. The displacement stepper motor 40 is mounted on the swing arm 14 by bolt fastening. Belt pulleys 39 are mounted on the output shaft of the displacement stepper motor 40 and one end of the swing pressing wheel 13 on the same swing arm 14 by bolt fastening. Multiple belt pulleys 39 are driven by a timing belt 41. The movement of the support rod is driven by the rotation of the swing pressing wheel 13. The displacement stepper motor 40 communicates with the PLC controller through an encoder and a wireless module. The PLC controller controls the start, stop, forward rotation, and reverse rotation of the displacement stepper motor 40.

[0023] When cutting the end of the support rod, a semicircular notch needs to be cut out. When cutting the end of the support rod, first cut a circular notch, and then connect the two circular notches by a flat cut to complete the cutting. When cutting the circular notch, the support rod needs to move back and forth. Thus, the displacement stepper motor 40 controls the forward and reverse rotation of the swing pressing wheel 13 to achieve the forward and backward movement of the support rod.

[0024] The lifting component 24 is multiple rollers 25 arranged side by side. Both ends of the multiple rollers 25 are installed on the lifting frame 26 through bearings. There are two lifting frames 26 and the lifting frames 26 are located at both ends of the multiple rollers 25. A lifting hydraulic cylinder 27 is fixed between each lifting frame 26 and the ground by welding. The lifting of the lifting frame 26 is realized through the lifting hydraulic cylinder 27. A limiting component 28 is installed on the lifting component 24. When the lifting frame 26 rises, the limiting component 28 moves the support rod towards the middle. The limiting component 28 includes a vertical limiting plate 29, a moving ring 30 and a swing rod 31. A moving ring 30 that moves on the roller 25 is sleeved on the roller 25. Multiple moving rings 30 on the same side are connected to the same straight rod by bolting. A vertically extending vertical limiting plate 29 is fixed on each straight rod by welding. Uprights extending upwards are fixed on the ground on the left and right sides of the lifting frame 26 by bolting. A swing rod 31 is hinged between the top of the upright and the straight rod. When the roller 25 lifts upwards, the moving ring 30 moves towards the middle under the action of the swing rod 31. In this way, the vertical limiting plate 29 pushes the support rod towards the middle. When the two vertical limiting plates 29 clamp the support rod, the vertical limiting plate 29 clamps and positions the support rod, which is convenient for the subsequent support rod clamping mechanism 2 to clamp the support rod.

Claims

1. A tower crane standard section strut end bevel cutting mechanism, comprising a laser cutting mechanism, a strut clamping mechanism and a strut feeding mechanism, wherein the laser head of the laser cutting mechanism can be translated, wherein a plurality of strut clamping mechanisms are installed below the laser cutting mechanism, characterized in that: The strut clamping mechanism clamps the struts, and the movement and rotation of the struts are realized by the strut clamping mechanism. Multiple sets of strut clamping mechanisms are located at the front and rear sides of the laser cutting mechanism. A strut feeding mechanism is arranged on the strut clamping mechanism, and the materials are pushed to the strut clamping mechanism by the strut feeding mechanism. A waste collection tank is installed under the laser cutting mechanism. The support rod clamping mechanism includes a mounting seat, a side pressing wheel and a swing pressing wheel, wherein the mounting seat is mounted on the waste collection tank, a rotating ring is mounted on the mounting seat by a rotating connection, a rotating power component is arranged between the rotating ring and the mounting seat, and a side pressing wheel and a swing pressing wheel are mounted on the rotating component, and the support rod is clamped by the side pressing wheel and the swing pressing wheel; The support rod feeding mechanism includes a pushing assembly and a lifting assembly. A lifting assembly that can be raised and lowered is installed behind the multiple groups of support rod clamping mechanisms. A pushing assembly is installed at the end of the lifting assembly away from the support rod clamping mechanism. The pushing assembly is a pushing plate installed on the piston rod of a pushing hydraulic cylinder, and the pushing plate is against one end of the support rod.

2. The end bevel cutting mechanism of a tower crane standard pitch brace according to claim 1, characterized in that: There are two upper and lower swing pressing wheels, each of which is installed at one end of the swing arm through a bearing, and a power drive component is installed on the swing pressing wheel, and the swing pressing wheel is rotated by the power drive component. The other end of the swing arm is hinged on the rotating ring, and a swing component is arranged between the rotating ring and the swing arm. There are two side pressing wheels and the side pressing wheels are arranged opposite to each other. A telescopic component is arranged between each side pressing wheel and the rotating component, and the two side pressing wheels are synchronously brought together and separated by the telescopic component, and the support rod is clamped by the side pressing wheel and the swinging pressing wheel.

3. The end bevel cutting mechanism of a tower crane standard pitch brace according to claim 2, characterized in that: The swing assembly includes a linkage gear, a clamping hydraulic cylinder and a sliding rod. The clamping hydraulic cylinder is installed on a rotating ring. A sliding rod is fixed on the outside of the swing arm. A linkage rod is installed on the piston rod of the clamping hydraulic cylinder. Two long holes are opened on the linkage plate. The sliding rod extends into the long holes of the linkage plate. Mutually meshing linkage gears are installed at the hinge of the swing arm and the rotating ring, so that the swing arm can be synchronously separated and closed; the telescopic assembly includes a sliding rectangular rod, a lifting plate and a slider. Sliders are fixed on the two side walls of each sliding rectangular rod. Lifting plates are arranged on both sides of the sliding rectangular rod. An inclined groove with the top inclined outward is opened on the lifting plate. The slider extends into the inclined groove. The tops of multiple lifting plates are fixed on the same cross bar. A clamping hydraulic cylinder is arranged between the cross bar and the rotating ring.

4. The end bevel cutting mechanism of a tower crane standard pitch brace according to claim 3, characterized in that: The rotating power component includes a gear ring and a rotating stepper motor. The rotating stepper motor is installed on the mounting seat, and a gear ring is fixed on the outer wall of the rotating ring. A gear is installed on the output shaft of the rotating stepper motor, and the gear is meshed with the gear ring. An angular displacement sensor is installed at one end of the side pressing wheel, and the displacement of the support rod is detected by the angular displacement sensor; the power drive component includes a pulley and a displacement stepper motor. The displacement stepper motor is installed on the swing arm, and pulleys are installed on the output shaft of the displacement stepper motor and one end of the swing pressing wheel located on the same swing arm, and multiple pulleys are driven by synchronous belts.

5. The end bevel cutting mechanism of a tower crane standard pitch brace according to claim 4, characterized in that: The lifting assembly is a plurality of rollers arranged side by side, and both ends of the plurality of rollers are installed on the lifting frame through bearings, and a lifting hydraulic cylinder is arranged between the lifting frame and the ground; a limit assembly is installed on the lifting assembly, and when the lifting frame rises, the limit assembly moves the support rod to the middle, and the limit assembly includes a vertical limit plate, a movable ring and a swing rod, and a movable ring is sleeved on the roller, and multiple movable rings located on the same side are connected to the same straight rod, and an upwardly extending vertical limit plate is fixed on each straight rod, and upwardly extending columns are arranged on both sides of the lifting frame, and a swing rod is hinged between the top of the column and the straight rod.

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