Positioning tool for welding portal frame of elevator car

Abstract

The invention discloses a positioning tool for welding an elevator car portal frame, and belongs to the technical field of elevator car portal frames, the positioning tool comprises a bottom plate and a clamping plate, a through hole is formed in the surface of the bottom plate, a motor is fixedly connected to the inner wall of the bottom plate, and a limiting rod is fixedly connected to the upper surface of the bottom plate; the device further comprises a threaded rod, the threaded rod is rotationally arranged in the bottom plate, a stand column is fixedly connected to the upper surface of the bottom plate, and a long pin is rotationally arranged in the stand column; and the hook is fixedly connected to the outer wall of the clamping plate. When the positioning tool for welding the portal frame of the elevator car works, a workpiece is placed on a clamping plate on one side, then a motor is started, when the motor works, a threaded rod is driven to rotate through an auxiliary bevel gear, and at the moment, the clamping plates on the left side and the right side move towards the middle position of a bottom plate under the action of the threaded rod, a lower connecting block and a limiting rod; and finally, the clamping plates on the left side and the right side position and fix the workpiece, and the operation process is rapid and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of elevator car gantry frames, in particular to a positioning tool for welding an elevator car gantry frame. Background Art

[0002] Elevator is a common means of transportation. Its rational use can not only transport people but also goods, which improves the comfort of residents and logistics efficiency. In addition, there are special elevators such as sightseeing elevators, which enrich daily life. The elevator car gantry is one of the important components of the elevator. The elevator car gantry is generally composed of two columns and an upper beam. It is the supporting structure of the elevator during use. At the same time, the elevator car gantry also has the functions of guiding operation and door control. The elevator car gantry ensures the normal use of the elevator as a whole. When processing the elevator car gantry, positioning tooling is required; During the welding process, a large amount of welding slag will fall, and the welding slag is in a molten state. If these welding slags come into contact with the driving structure of the positioning tooling, the driving structure will be stuck, which will affect the subsequent use of the positioning tooling and bring unnecessary troubles to the welding work; In order to overcome the above defects, prior art 1 (Chinese patent with application number CN202110834190.7 and application date 2021-07-23) provides a structural member welding positioning device, which can avoid accidents such as burns on the hands of workers during welding, simplify the operation process, improve positioning efficiency, and achieve the purpose of double-sided welding of the structural member to be welded at one time, which can effectively improve work efficiency and avoid the welding slag falling on the ground when welding the structural member, which takes a lot of time to clean up, thereby effectively reducing the workload of the staff; Prior art 2 (Chinese patent with application number CN202311086510.0 and application date 2023-08-28) A titanium ingot welding positioning device, which can fix the sleeve to the wall through a connecting mechanism, that is, complete the fixation of the titanium ingot; then the welding mechanism rotates around the titanium ingot to complete the welding of the titanium ingot, and finally the slag removal mechanism rotates around the titanium ingot to remove the welding slag at the weld of the titanium ingot; And prior art 3 (Chinese patent with application number CN202011593526.7 and application date 2020-12-29) a welding slag removal device, which can automatically process the welding slag of the welded parts and collect the removed welding slag and waste gas, has a good cleaning function and has an environmental protection effect; During the welding process, the temperature of the workpiece being welded is relatively high, so it is necessary to perform simple auxiliary cooling on the workpiece after welding. However, the device in the above application does not have an auxiliary cooling structure during use, so the workpiece takes a long time to cool down and the work efficiency is low.

[0003] In view of the above problems, it is urgent to carry out innovative design based on the original positioning tooling for elevator car gantry welding. Summary of the invention

[0004] The object of the present invention is to provide a positioning tool for welding an elevator car gantry to solve the problem proposed in the above background technology that during use, there is no auxiliary cooling structure, resulting in a long cooling time for the workpiece and low work efficiency.

[0005] To achieve the above object, the present invention provides the following technical solution: a positioning tool for welding an elevator car gantry, comprising a bottom plate and a clamping plate, wherein a through hole is opened on the surface of the bottom plate, a motor is fixedly connected to the inner wall of the bottom plate, and a limit rod is fixedly connected to the upper surface of the bottom plate; The clamping plate is slidably arranged on the surface of the limiting rod, and the limiting rod is an inverted "U" shape when viewed from the front, and the clamping plates are symmetrically distributed about the center of the bottom plate; A positioning tool for welding an elevator car gantry, further comprising: A threaded rod, the threaded rod is rotatably arranged inside the bottom plate, a column is fixedly connected to the upper surface of the bottom plate, and a long pin is rotatably arranged inside the column; A hook, the hook is fixedly connected to the outer wall of the clamping plate, and the surface of the hook is hung with an external fireproof cloth, and the fireproof cloth is wound and fixedly connected to the surface of the long pin when working; A long board, the long board is fixedly connected to the upper surface of the bottom board, a rotating shaft is rotatably arranged inside the long board, a movable board is fixedly connected to the surface of the rotating shaft, and the long board is symmetrically distributed about the center of the bottom board; A vertical rod is fixedly connected to the upper surface of the bottom plate, a connecting shaft is rotatably arranged inside the vertical rod, and a fan is fixedly connected to the end of the connecting shaft.

[0006] Preferably, the output end of the motor and the end of the threaded rod are fixedly connected with an auxiliary bevel gear, the lower surface of the clamping plate is fixedly connected with a lower connecting block, and the lower connecting block is threadedly connected to the threaded rod, and the rotation directions of the left and right sides of the threaded rod are opposite, and the clamping plate is an inverted "L" structure when viewed from the front.

[0007] Preferably, the long pin passes through the interior of the column, and a torsion spring having an elastic reset function is fixedly connected to the surface of the long pin, and the other side of the torsion spring is fixedly connected to the inner wall of the column.

[0008] Preferably, a connecting plate is fixedly connected to the surface of the long pin, and the connecting plate is a circular structure when viewed from the front, and a first magnet is fixedly connected to the surface of the connecting plate.

[0009] Preferably, the first magnets are symmetrically distributed about the center of the connecting plate, and the surface of the movable plate is fixedly connected with second magnets corresponding to the first magnets.

[0010] Preferably, the magnetic poles of the second magnet and the first magnet at adjacent positions are the same, the height of the end of the movable plate is higher than the height of the long pin, and the height of the end of the movable plate is lower than the height of the hook.

[0011] Preferably, a counterweight block is fixedly connected to the surface of the rotating shaft, and a limiting groove corresponding to the counterweight block is opened inside the long plate.

[0012] Preferably, a first bevel gear is fixedly connected to the surface of the long pin, and the first bevel gear is symmetrically distributed about the center of the long pin.

[0013] Preferably, a second bevel gear is fixedly connected to the other side of the connecting shaft, and the second bevel gear corresponds to the first bevel gear one-to-one.

[0014] Preferably, a protection frame is fixedly connected to the upper surface of the bottom plate, and the protection frame is threadedly connected to an external protection net during operation.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the elevator car gantry welding positioning tool adopts a new structural design, and the welding slag is collected by the set fireproof cloth. At the same time, the fireproof cloth will cover the transmission structure when working, so that the transmission mechanism is not affected, so that the device as a whole can work smoothly. At the same time, a movable plate is also provided, so that the movable plate can hit the lower side of the fireproof cloth, so that the welding slag on the fireproof cloth can be better discharged, thereby facilitating the cleaning of the staff and improving the work efficiency. A fan is also provided, and the air flow is accelerated by the rotation of the fan, so that the welding heat can be better taken away, which is convenient for cooling, shortening the cooling process, and improving the work efficiency. The specific contents are as follows: (1) When the elevator car gantry welding positioning tool is in operation, the workpiece is placed on a clamping plate on one side, and then the motor is started. When the motor is working, the threaded rod is driven to rotate through the auxiliary bevel gear. At this time, the clamping plates on the left and right sides move to the middle position of the bottom plate under the action of the threaded rod, the lower connecting block and the limit rod. Finally, the clamping plates on the left and right sides position and fix the workpiece. The operation process is quick and convenient; Furthermore, during the movement of the clamping plate, the fireproof cloth and the long pin are driven to rotate through the hook, and then the fireproof cloth is unfolded. When the fireproof cloth is unfolded, it can cover the threaded rod, so that the welding slag in the processing process will not contact the transmission mechanism, and then the welding slag will not remain on the transmission mechanism, thereby ensuring the stable operation of the transmission mechanism and improving work efficiency; Furthermore, when the clamping plates are approaching each other, the long pin rotates inside the column, and the long pin stretches the torsion spring. After the welding is completed, the staff controls the motor to rotate the motor. At this time, the clamping plate moves back under the action of the threaded rod, the limit rod and the lower connecting block, that is, the hook moves back, and then the long pin and the fireproof cloth lose the tension of the hook. At this time, the long pin rotates under the action of the torsion spring, and when the long pin rotates, the fireproof cloth will be rolled up to facilitate the next use of the fireproof cloth; (2) The positioning fixture for welding the elevator car gantry will drive the connecting plate to rotate synchronously during the rotation of the long pin. When the connecting plate rotates, the first magnet on the surface of the connecting plate will intermittently approach the second magnet on the surface of the movable plate. Then, the movable plate and the rotating shaft will rotate inside the long plate under the action of the mutual repulsive magnetic force between the first magnet and the second magnet and the counterweight block. When the movable plate rotates, it will hit the lower surface of the fireproof cloth again and again, causing the welding slag to fall around, making it easy for the staff to collect and clean it; Furthermore, during the rotation and reset of the long pin, the limit groove limits the rotation angle of the counterweight block, thereby limiting the rotation angle of the rotating shaft and the movable plate, thereby ensuring the working stability of the movable plate and preventing excessive rotation; (3) The positioning fixture for welding the elevator car gantry frame, during the rotation of the long pin, the long pin drives the connecting shaft to rotate inside the vertical rod through the first bevel gear and the second bevel gear. When the connecting shaft rotates, it drives the fan to rotate. When the fan is working, it accelerates the flow of air, allowing the airflow to take away heat faster, which has the effect of assisting cooling and improving work efficiency; Furthermore, an external protective net is threadedly connected to the protective frame, so that during operation, the fan will not affect the staff and accidental injuries will not occur, thereby ensuring normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the connection structure between the base plate and the clamping plate of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the bottom plate of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the structure of the clamping plate in working state of the present invention; Figure 5This is a schematic diagram of the connection structure between the column and the long pin of the present invention; Figure 6 This is a schematic diagram of the structure of the movable plate in working state of the present invention; Figure 7 This is a schematic diagram of the connection structure between the rotating shaft and the counterweight block of the present invention; Figure 8 It is a schematic diagram of the connection structure between the long pin and the first bevel gear of the present invention; Fig. 9 It is a schematic diagram of the connection structure of the connecting shaft and the fan of the present invention.

[0017] In the figure: 1. bottom plate; 2. motor; 3. clamping plate; 4. limiting rod; 5. threaded rod; 6. auxiliary bevel gear; 7. lower connecting block; 8. column; 9. long pin; 10. hook; 11. connecting plate; 12. first magnet; 13. long plate; 14. rotating shaft; 15. movable plate; 16. second magnet; 17. counterweight; 18. limiting slot; 19. first bevel gear; 20. torsion spring; 21. connecting shaft; 22. second bevel gear; 23. fan; 24. protection frame; 25. vertical rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: By setting the clamping plate 3, the workpiece can be quickly clamped and positioned, and the work efficiency is fast. In addition, a hook 10 and a long pin 9 are also provided. At the same time, the long pin 9 can be wound and fixedly connected to the fireproof cloth outside, so that the fireproof cloth protects the transmission mechanism, such as Figure 1-Figure 7 As shown: A positioning tool for welding an elevator car gantry, comprising a bottom plate 1 and a clamping plate 3, a through hole is opened on the surface of the bottom plate 1, a motor 2 is fixedly connected to the inner wall of the bottom plate 1, and a limit rod 4 is fixedly connected to the upper surface of the bottom plate 1, the clamping plate 3 is slidably arranged on the surface of the limit rod 4, and the limit rod 4 is an inverted "U" shape when viewed from the front, and the clamping plates 3 are symmetrically distributed about the center of the bottom plate 1; A positioning tool for welding an elevator car gantry, further comprising: The threaded rod 5 is rotatably arranged inside the bottom plate 1, and the upper surface of the bottom plate 1 is fixedly connected with a column 8, and the inside of the column 8 is rotatably arranged with a long pin 9 and a hook 10, the hook 10 is fixedly connected to the outer wall of the clamping plate 3, and the surface of the hook 10 is hung with an external fireproof cloth, and the fireproof cloth is wound and fixedly connected to the surface of the long pin 9 when working; The long board 13 is fixedly connected to the upper surface of the bottom board 1, and a rotating shaft 14 is rotatably arranged inside the long board 13, and a movable board 15 is fixedly connected to the surface of the rotating shaft 14, and the long board 13 is symmetrically distributed about the center of the bottom board 1; The vertical rod 25 is fixedly connected to the upper surface of the bottom plate 1 , and a connecting shaft 21 is rotatably arranged inside the vertical rod 25 , and a fan 23 is fixedly connected to the end of the connecting shaft 21 .

[0020] The output end of the motor 2 and the end of the threaded rod 5 are fixedly connected with an auxiliary bevel gear 6, the lower surface of the clamping plate 3 is fixedly connected with a lower connecting block 7, and the lower connecting block 7 is threadedly connected to the threaded rod 5, and the rotation directions of the left and right sides of the threaded rod 5 are opposite, and the front view of the clamping plate 3 is an inverted "L" structure.

[0021] During operation, the workpiece is placed on the clamping plate 3 on one side, and then the motor 2 is started. When the motor 2 is working, the threaded rod 5 is driven to rotate inside the bottom plate 1 through the auxiliary bevel gear 6. At this time, the clamping plates 3 on the left and right sides move to the middle position of the bottom plate 1 under the action of the threaded rod 5, the lower connecting block 7 and the limit rod 4. Finally, the clamping plates 3 on the left and right sides position and fix the workpiece. The operation process is fast and convenient. During the movement of the clamping plate 3, the fireproof cloth and the long pin 9 are driven to rotate through the hook 10, and then the fireproof cloth is unfolded. When the fireproof cloth is unfolded, it can cover the threaded rod 5, so that the workpiece can be loaded. The welding slag during the working process will not contact the transmission mechanism, and the welding slag will not remain on the transmission mechanism, which ensures the stable operation of the transmission mechanism and improves the work efficiency. In the process of the clamping plates 3 approaching each other, the long pin 9 rotates inside the column 8. At this time, the long pin 9 will stretch the torsion spring 20. After the welding is completed, the staff controls the motor 2 to rotate the motor 2. At this time, the clamping plate 3 moves back, and the long pin 9 and the fireproof cloth lose tension. At this time, the long pin 9 rotates under the action of the torsion spring 20, and when the long pin 9 rotates, the fireproof cloth will be rolled up for the next use.

[0022] Embodiment 2: Different from Embodiment 1, the movable plate 15 can hit the lower surface of the fireproof cloth again and again, so that the welding slag on the surface of the fireproof cloth falls off, which is convenient for the staff to clean up and improves the work efficiency. Figure 5-Figure 8 As shown: The long pin 9 passes through the interior of the column 8, and the surface of the long pin 9 is fixedly connected with a torsion spring 20 which plays an elastic reset role, and the other side of the torsion spring 20 is fixedly connected to the inner wall of the column 8, and the surface of the long pin 9 is fixedly connected with a connecting plate 11, and the front view of the connecting plate 11 is a circular structure, and the surface of the connecting plate 11 is fixedly connected with a first magnet 12.

[0023] The first magnet 12 is symmetrically distributed about the center of the connecting plate 11, and the surface of the movable plate 15 is fixedly connected with a second magnet 16 corresponding to the first magnet 12, and the second magnet 16 has the same magnetic pole as the first magnet 12 at the adjacent position, and the end height of the movable plate 15 is higher than the height of the long pin 9, and the end height of the movable plate 15 is lower than the height of the hook 10, and the surface of the rotating shaft 14 is fixedly connected with a counterweight block 17, and the interior of the long plate 13 is provided with a limiting groove 18 corresponding to the counterweight block 17 When the long pin 9 rotates inside the column 8, it will drive the connecting plate 11 to rotate synchronously. When the connecting plate 11 rotates, the first magnet 12 will intermittently approach the second magnet 16 on the surface of the movable plate 15. When the first magnet 12 approaches the second magnet 16, the movable plate 15 rotates toward the outside of the long plate 13 under the action of the mutually repulsive magnetic force between the first magnet 12 and the second magnet 16. At this time, the rotating shaft 14 rotates synchronously, and then the counterweight 17 slides inside the limiting groove 18. When the first magnet 12 is away from the second magnet 16, the rotating shaft 14 and the movable plate 15 rotate back under the action of the counterweight 17. The above process is repeated. The movable plate 15 and the rotating shaft 14 rotate back and forth inside the long plate 13 under the action of the mutually repulsive magnetic force and the counterweight 17. When the movable plate 15 rotates, it will hit the lower surface of the fireproof cloth again and again, causing the welding slag to fall around, which is convenient for the staff to collect and clean (the limiting groove 18 limits the rotation angle of the counterweight 17 to ensure stability).

[0024] Embodiment 3: Different from Embodiment 2, the fan 23 is provided to accelerate the airflow after the welding is completed, so that the heat is taken away more quickly, thereby increasing the cooling rate. Figure 1 and Figure 2 as well as Fig. 9 Shown A first bevel gear 19 is fixedly connected to the surface of the long pin 9, and the first bevel gear 19 is symmetrically distributed about the center of the long pin 9. A second bevel gear 22 is fixedly connected to the other side of the connecting shaft 21, and the second bevel gear 22 corresponds to the first bevel gear 19 one by one. A protective frame 24 is fixedly connected to the upper surface of the base plate 1, and the protective frame 24 is threadedly connected to the external protective net during operation.

[0025] During the rotation of the long pin 9, the long pin 9 drives the connecting shaft 21 to rotate inside the vertical rod 25 through the first bevel gear 19 and the second bevel gear 22. When the connecting shaft 21 rotates, the fan 23 is driven to rotate. When the fan 23 is working, the airflow is accelerated, so that the airflow takes away heat faster, which has the effect of assisting cooling and improving work efficiency. The external protective net is threadedly connected to the protective frame 24, and then during the working process, the fan 23 will not affect the staff, and no accidental injury will occur, thereby ensuring the normal progress of the work.

[0026] The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

Claims

1. A positioning tool for welding an elevator car gantry, comprising a base plate (1) and a clamping plate (3), wherein a through hole is provided on the surface of the base plate (1), a motor (2) is fixedly connected to the inner wall of the base plate (1), and a limit rod (4) is fixedly connected to the upper surface of the base plate (1); The clamping plate (3) is slidably arranged on the surface of the limiting rod (4), and the limiting rod (4) is in an inverted "U" shape when viewed from the front, and the clamping plates (3) are symmetrically distributed about the center of the bottom plate (1); It is characterized in that Also includes: A threaded rod (5), the threaded rod (5) being rotatably arranged inside the base plate (1), and a column (8) being fixedly connected to the upper surface of the base plate (1), and a long pin (9) being rotatably arranged inside the column (8); A hook (10), wherein the hook (10) is fixedly connected to the outer wall of the clamping plate (3), and a fireproof cloth from the outside is hung on the surface of the hook (10), and the fireproof cloth is wound and fixedly connected to the surface of the long pin (9) when in operation; a long plate (13), the long plate (13) being fixedly connected to the upper surface of the bottom plate (1), a rotating shaft (14) being rotatably arranged inside the long plate (13), a movable plate (15) being fixedly connected to the surface of the rotating shaft (14), and the long plates (13) being symmetrically distributed about the center of the bottom plate (1); A vertical rod (25) is fixedly connected to the upper surface of the bottom plate (1), a connecting shaft (21) is rotatably arranged inside the vertical rod (25), and a fan (23) is fixedly connected to the end of the connecting shaft (21).

2. The elevator car gantry welding positioning tool according to claim 1, characterized in that: The output end of the motor (2) and the end of the threaded rod (5) are both fixedly connected with an auxiliary bevel gear (6); the lower surface of the clamping plate (3) is fixedly connected with a lower connecting block (7); the lower connecting block (7) is threadedly connected to the threaded rod (5); the left and right sides of the threaded rod (5) have opposite rotation directions; and the clamping plate (3) has an inverted "L" structure when viewed from the front.

3. The positioning tool for welding an elevator car gantry according to claim 1, characterized in that: The long pin (9) passes through the interior of the column (8), and a torsion spring (20) having an elastic reset function is fixedly connected to the surface of the long pin (9), and the other side of the torsion spring (20) is fixedly connected to the inner wall of the column (8).

4. The positioning tool for welding an elevator car gantry according to claim 1, characterized in that: A connecting plate (11) is fixedly connected to the surface of the long pin (9), and the connecting plate (11) is a circular structure when viewed from the front, and a first magnet (12) is fixedly connected to the surface of the connecting plate (11).

5. The positioning tool for welding an elevator car gantry according to claim 4, characterized in that: The first magnets (12) are symmetrically distributed about the center of the connecting plate (11), and a second magnet (16) corresponding to the first magnet (12) is fixedly connected to the surface of the movable plate (15).

6. The elevator car gantry welding positioning tool according to claim 5, characterized in that: The second magnet (16) has the same magnetic pole as the first magnet (12) at adjacent positions, the height of the end of the movable plate (15) is higher than the height of the long pin (9), and the height of the end of the movable plate (15) is lower than the height of the hook (10).

7. The elevator car gantry welding positioning tool according to claim 1, characterized in that: A counterweight block (17) is fixedly connected to the surface of the rotating shaft (14), and a limiting groove (18) corresponding to the counterweight block (17) is provided inside the long plate (13).

8. The elevator car gantry welding positioning tool according to claim 1, characterized in that: A first bevel gear (19) is fixedly connected to the surface of the long pin (9), and the first bevel gear (19) is symmetrically distributed about the center of the long pin (9).

9. The elevator car gantry welding positioning tool according to claim 8, characterized in that: A second bevel gear (22) is fixedly connected to the other side of the connecting shaft (21), and the second bevel gear (22) corresponds to the first bevel gear (19) in a one-to-one manner.

10. The elevator car gantry welding positioning tool according to claim 1, characterized in that: A protection frame (24) is fixedly connected to the upper surface of the bottom plate (1), and the protection frame (24) is threadedly connected to an external protection net during operation.

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