High-toughness elevator fitting welding processing device

Abstract

The application discloses a high-toughness elevator accessory welding processing device, which comprises a workbench, a shell, a movable gantry, a welding device and a segmented clamping device. A plurality of clamping units are arranged on both sides of the accessory to be welded along the segmented clamping device. When the gantry moves, the trapezoidal limiting block first drives the cross rod to make the bolt exit the locking part of the cam, the rack sliding assembly drives the gear and the cam to rotate to switch the clamping or releasing state of the clamping plate, and the bolt is reset to lock under the action of the third spring. The device is also provided with a post-welding pressure detection device and a pulse spraying device triggered by the stroke of a push plate. The structure can elastically compensate the plate surface error at different positions, keep the lap joint area stably attached, and complete the pressure toughness response collection and spraying cleaning after welding.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding equipment for high-toughness elevator parts. Background Technology

[0002] High-toughness steel elevator components are subjected to alternating loads over long periods of service. The fit, deformation, and post-weld integrity of their welded joints directly affect the subsequent assembly accuracy and reliability. The main function of welding fixtures is to position and constrain the components to be welded, ensuring that the original material properties are maintained stably during the welding process, rather than directly measuring the material's toughness through the fixture itself.

[0003] Existing technologies include multi-point or segmented welding fixtures, as well as solutions that utilize pressure sensors to monitor clamping force and spray cooling for post-weld workpieces. However, existing segmented fixtures are typically driven by multiple cylinders or actuators, resulting in numerous pipelines and control components. The consistency of action at each clamping point is easily affected by differences in actuator response.

[0004] There is a lack of direct positional correspondence between the clamping action and the moving welding mechanism. Areas that the welding head has not yet passed may be prematurely released due to misoperation, or the welded area may remain rigidly constrained for a long time, thus exacerbating local deformation. Existing pressure sensors are mostly used to monitor the clamping force of the fixture itself. This signal cannot be equated with material toughness, nor can it directly reflect the compressive response of the welded component under a set external force. If the spray device operates continuously before the weld has fully solidified, it may also create excessively large local temperature differences.

[0005] Therefore, there is a need to provide a welding processing apparatus that allows the stroke of the moving welding mechanism to sequentially release the locking of the clamping unit, drive the clamping unit to switch states and relock it, while applying a repeatable detection load to the component after welding and triggering a spray at the end of the detection stroke, so as to reduce the number of independent actuators and make the sequential relationship of clamping, detection and spraying clearer. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-toughness elevator component welding processing device, which solves the problems of poor action consistency when multiple clamping points are driven separately, mismatch between clamping state and welding position, and unclear post-weld inspection and spraying sequence.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-toughness elevator parts welding processing device includes a worktable, a housing, welding components and a segmented clamping device, wherein the housing is disposed on the worktable and forms a processing position for the elevator parts to be welded;

[0009] The welding assembly includes a gantry that moves along the processing position and a welding device disposed on the gantry;

[0010] The clamping assembly includes a clamping push plate that moves toward or away from the processing position and a plurality of clamping units spaced apart along the clamping push plate. Each clamping unit includes a protective shell that compensates for movement relative to the clamping push plate, a clamping plate that presses against the elevator parts to be welded, a gear and a cam that are rotatably disposed in the protective shell, and a pin that restricts the rotation of the cam. The cam is driven to cooperate with the clamping plate to switch the clamping plate between a clamping position and a releasing position.

[0011] The gantry frame is equipped with a trapezoidal limiting block and a rack sliding assembly that meshes with a gear, and the pin drive is connected to a crossbar that contacts the trapezoidal limiting block;

[0012] When the gantry moves to the corresponding clamping unit, the trapezoidal limit block first drives the pin to exit the locking position of the cam through the crossbar. Then the rack and pinion sliding assembly drives the gear and cam to rotate. After the trapezoidal limit block passes the crossbar, the pin restricts the rotation of the cam again, so that multiple clamping units switch sequentially and maintain the clamping state as the welding device moves.

[0013] The housing is also equipped with a detection component that applies a detection load to the welded elevator components and collects the force response, as well as a spray component that is triggered by the pushing action of the detection component and sprays a cooling medium onto the welded area.

[0014] Preferably, the workbench is provided with the housing, and the upper part of the housing forms the bearing assembly; the housing is provided with a lead screw and a first limiting rod arranged along the extension direction of the processing position, the gantry is threadedly connected to the lead screw and slidably connected to the first limiting rod, and the first motor is drivenly connected to the lead screw.

[0015] Preferably, the housing is provided with a limiting screw and a second limiting rod that are parallel to each other. The clamping push plate is threadedly connected to the limiting screw and slidably connected to the second limiting rod, respectively. The second motor is drivenly connected to the limiting screw to drive the clamping push plate to move closer to or away from the processing position.

[0016] Preferably, the protective shell includes a first semi-open protective shell, a first fixing rod is provided on the clamping push plate, the first semi-open protective shell is movable relative to the first fixing rod along the clamping direction, and a first spring is provided between the first semi-open protective shell and the clamping push plate; the clamping plate is connected to a third fixing rod, and a second spring is provided between the third fixing rod and the first semi-open protective shell. Preferably, the pressure sensor is provided with a pressure-bearing diaphragm.

[0017] Preferably, a second fixed rod is rotatably disposed inside the first semi-open protective shell, the gear and the cam are respectively disposed on the second fixed rod, and the cam cooperates with the third fixed rod; the rack sliding assembly is disposed on the gantry frame through a telescopic rod, and can mesh with the corresponding gear under the drive of the clamping push plate.

[0018] Preferably, a second half-open protective shell is provided below the first half-open protective shell, the pin is movably disposed on the second half-open protective shell and can cooperate with the locking part on the cam, a third spring is provided between the pin and the second half-open protective shell, the third spring is used to push the pin to move toward the locking part, and the crossbar is driven to cooperate with the pin.

[0019] Preferably, the detection assembly includes a sliding support, a pressure-bearing component, a pressure sensor, a hydraulic telescopic rod, and a push plate. The sliding support is slidably disposed on the housing and connected to the clamping push plate. The pressure-bearing component is movably disposed on the sliding support. The pressure sensor is disposed on the force transmission path of the pressure-bearing component. The push plate is disposed on the telescopic end of the hydraulic telescopic rod to push the welded elevator parts toward the pressure-bearing component.

[0020] Preferably, the pressure-bearing component includes a triangular block, an L-shaped fixing plate is provided on the sliding support, the triangular block is slidably disposed on the sliding support along the force direction of the pressure sensor, the pressure sensor is disposed between the L-shaped fixing plate and the triangular block, and a pressure-bearing diaphragm is provided on the side of the pressure sensor facing the triangular block.

[0021] Preferably, the spray assembly includes a first push rod, a second push rod, a water cylinder, a piston, a fourth spring, a water inlet pipe, a water outlet pipe, and a sprayer. The first push rod is disposed on the push plate, and the second push rod is connected to the piston. The first push rod and the second push rod are arranged opposite each other along the pushing direction and have a gap in the initial state. The piston is sealed and slidably disposed inside the water cylinder. The fourth spring is disposed between the piston and the water cylinder. The water inlet pipe and the water outlet pipe are respectively connected to the water cylinder and are respectively provided with one-way valves. The sprayer is disposed at the water outlet end of the water outlet pipe. The worktable is provided with a drain hole at the part below the sprayer.

[0022] Preferably, an outlet check valve is installed in the outlet pipe and an inlet check valve is installed in the inlet pipe.

[0023] Preferably, the workbench located below the sprayer has several drainage holes.

[0024] Preferably, a pressure-bearing diaphragm is provided on the upward-facing side of the pressure sensor.

[0025] Preferably, the welding device consists of an electric telescopic rod and a welding gun, with the electric telescopic rod controlling the welding gun to move up and down.

[0026] The present invention has the following beneficial effects:

[0027] 1. The segmented clamping device uses a limiting screw and clamping push plate to achieve segmented clamping of the plate. The segmented clamping is uniform in force, eliminates interlayer gaps, and improves the weld strength and fatigue resistance of the workpiece. The cam locking mechanism is formed with a cam, pin and third spring, which can lock the clamping position during the welding process to prevent the push plate from retracting. The gear and cam are synchronously driven, and the semi-open protective shell isolates the spattered weld slag and protects the internal transmission parts.

[0028] 2. Each clamping unit compensates for the installation error of the clamping push plate and the local height difference of the plate to be welded by the first spring and the second spring respectively, so that multiple clamping plates can fit the parts to be welded respectively; after the cam reaches the clamping position, it is locked by the pin, which can reduce the cam rotation and clamping force fluctuation caused by welding vibration.

[0029] 3. The trapezoidal limit block, crossbar, pin, rack and pinion sliding assembly, gear and cam cooperate with the movement stroke of the gantry frame, so that the displacement of the same gantry frame can complete the unlocking, state switching and relocking of the clamping unit, without the need to configure a drive cylinder for each clamping point.

[0030] By setting the position of each component relative to the welding device, the clamping unit can be released after the welding device has passed through the corresponding area.

[0031] 4. After welding, the testing device applies a set pushing stroke to the elevator components. The pressure sensor collects the reaction force transmitted by the triangular block. This signal is used to characterize the pressure response of the welded component under uniform testing conditions, rather than directly equating a single pressure value with material toughness. The initial distance between the first and second push rods ensures that the spraying action occurs during the pressure testing stroke, avoiding continuous spraying during the welding process.

[0032] 5. The piston, the fourth spring, and the one-way valves in the inlet and outlet pipes allow the water cylinder to drain liquid during one propulsion stroke and replenish liquid when the push plate resets, forming a quantitative intermittent spray; the drain hole is used to promptly discharge coolant and washed-off welding debris, reducing liquid accumulation in the working area. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a high-toughness elevator parts welding and processing device proposed in this invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of a high-toughness elevator parts welding and processing device proposed in this invention;

[0035] Figure 3This invention proposes a high-toughness elevator component welding and processing device. Figure 2 A magnified view of a section at point A in the middle;

[0036] Figure 4 This is a cross-sectional view of a water cylinder for a high-toughness elevator parts welding and processing device proposed in this invention.

[0037] Figure 5 This is a schematic diagram showing the connection between the gantry frame and the segmented clamping device of a high-toughness elevator parts welding and processing device proposed in this invention.

[0038] Figure 6 This is a cross-sectional view of a segmented clamping device for a high-toughness elevator parts welding and processing apparatus proposed in this invention.

[0039] In the diagram: 1. Workbench, 2. Housing, 3. Hydraulic telescopic rod, 4. Lead screw, 5. Push plate, 6. Gantry frame, 7. Water outlet pipe, 8. Water inlet pipe, 9. Water cylinder, 10. Second push rod, 11. First push rod, 12. Sprayer, 13. Elevator accessories, 14. Welding device, 15. First motor, 16. First limit rod, 17. Limit lead screw, 18. Second limit rod, 19. Telescopic rod, 20. Rack and pinion sliding assembly, 21. Trapezoidal limit block, 22. Clamping push plate, 23. 24. Gear, 25. Clamping plate, 26. First half-open protective shell, 27. First fixed rod, 28. First spring, 29. Crossbar, 30. Third fixed rod, 31. Second spring, 32. Second half-open protective shell, 33. Cam, 34. Third spring, 35. Pin, 36. Sliding support, 37. L-shaped fixed plate, 38. Triangular block, 39. Pressure sensor, 40. Piston, 41. Fourth spring, 42. Second motor, 43. Pressure plate. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] Reference Figures 1-6 A high-toughness elevator component welding processing device includes a workbench 1, a housing 2, welding components and a segmented clamping device, wherein the housing 2 is disposed on the workbench 1 and forms a processing position for the elevator component 13 to be welded;

[0042] The welding assembly includes a gantry 6 that moves along the processing position and a welding device 14 disposed on the gantry;

[0043] The clamping assembly includes a clamping push plate 22 that moves toward or away from the processing position and a plurality of clamping units spaced apart along the clamping push plate 22. Each clamping unit includes a protective shell that compensates for movement relative to the clamping push plate 22, a clamping plate 25 that presses against the elevator part 13 to be welded, a gear 24 and a cam 33 that are rotatably disposed in the protective shell, and a pin 35 that restricts the rotation of the cam 33. The cam 33 is driven to cooperate with the clamping plate 25, so that the clamping plate 25 switches between a clamping position and a releasing position. The gantry is provided with a trapezoidal limiting block 21 and a rack sliding assembly 20 that meshes with the gear 24. The pin 35 is driven to be connected to a crossbar 29 that contacts the trapezoidal limiting block 21.

[0044] When the gantry 6 moves to the corresponding clamping unit, the trapezoidal limiting block 21 first drives the pin 35 to exit the locking position of the cam 33 through the crossbar 29. Then, the rack and pinion sliding assembly 20 drives the gear 24 and the cam 33 to rotate. After the trapezoidal limiting block 21 passes through the crossbar 29, the pin 35 restricts the rotation of the cam 33 again, so that multiple clamping units switch sequentially as the welding device moves and maintain the clamping state.

[0045] The housing 2 is also provided with a detection component that applies a detection load to the welded elevator components and collects the force response, and a spray component that is triggered by the pushing action of the detection component and sprays a cooling medium onto the welded area.

[0046] In this invention, the workbench 1 and the housing 2 together constitute the frame, the upper part of the housing 2 constitutes the bearing component, the gantry 6 constitutes the moving frame, the clamping push plate 22 constitutes the clamping base, the first half-open protective shell 26 constitutes the mounting base, the clamping plate 25 constitutes the clamping member, the cam 33 constitutes the state switching member, the pin 35 constitutes the locking member, the trapezoidal limit block 21 constitutes the triggering member, and the rack and pinion sliding assembly 20 and the gear 24 together constitute the transmission member.

[0047] The segmented clamping device is installed on both sides of the machining position, including a limiting screw 17, a second limiting rod 18, a telescopic rod 19, a rack and pinion sliding assembly 20, a clamping push plate 22, a second motor 42, and multiple clamping units arranged at intervals along the clamping push plate 22. The output end of the second motor 42 is connected to the limiting screw 17 for transmission. The clamping push plate 22 is threadedly connected to the limiting screw 17 and slidably connected to the second limiting rod 18, allowing the clamping push plate 22 to move closer to or further away from the machining position. In each clamping unit, a first fixing rod 27 is fixed to the clamping push plate 22, a first half-open protective shell 26 is slidably sleeved on the first fixing rod 27, and a first spring 28 is sleeved on the first fixing rod 27 and abuts against the clamping push plate 22 and the first half-open protective shell 26; a third fixing rod 30 is slidably disposed on the first half-open protective shell 26, and the end of the third fixing rod 30 facing the machining position is fixed to the clamping plate 25; a second spring 31 is disposed between the third fixing rod 30 and the first half-open protective shell 26. The second fixed rod 23 is rotatably mounted on the first semi-open protective shell 26. The gear 24 and cam 33 are both fixed to the second fixed rod 23, and the working surface of the cam 33 abuts against the third fixed rod 30. The second semi-open protective shell 32 is fixed to the bottom of the first semi-open protective shell 26. The pin 35 is slidably mounted on the second semi-open protective shell 32. The third spring 34 pushes the pin 35 toward the locking part of the cam 33. The crossbar 29 is connected to the pin 35. The first semi-open protective shell 26 and the second semi-open protective shell 32 are used to prevent welding spatter from entering the mating area of ​​the gear 24, cam 33, and pin 35.

[0048] During clamping, the second motor 42 drives the limit screw 17 to rotate, causing the clamping push plate 22 to move towards the processing position, and each clamping plate 25 contacts the elevator component 13 in sequence. The first spring 28 allows the first half-open protective shell 26 to make a small displacement relative to the clamping push plate 22, and the second spring 31 allows the clamping plates 25 to compensate for local plate height differences, thereby preventing one clamping point from contacting first and then hindering other clamping points from continuing to fit. After the cam 33 rotates to the clamping position, the pin 35 engages with the locking part of the cam 33 under the action of the third spring 34. During welding, the first motor 15 drives the gantry 6 to move forward; the trapezoidal limit block 21 first presses the crossbar 29, causing the pin 35 to temporarily disengage from the locking part of the cam 33, and then the rack and pinion sliding assembly 20 meshes with the corresponding gear 24 and drives the cam 33 to rotate, thereby switching the state of the clamping unit. After the trapezoidal limit block 21 passes the crossbar 29, the pin 35 resets and locks the cam 33. By setting the trapezoidal limiting block 21 and the rack sliding assembly 20 on the rear side of the welding device 14 along the forward direction, the corresponding clamping unit can be released after the welding device 14 passes; when the gantry 6 is reset in the reverse direction, each cam 33 rotates back to its initial position in the opposite direction.

[0049] The detection device includes a sliding support 36, a triangular block 38, an L-shaped fixing plate 37, a pressure sensor 39, a hydraulic telescopic rod 3, and a push plate 5. The sliding support 36 is slidably mounted on the housing 2 and connected to the clamping push plate 22, allowing the detection position to be adjusted according to the clamping specifications. The L-shaped fixing plate 37 is fixed to the sliding support 36. The triangular block 38 is slidably mounted on the sliding support 36 along the force direction of the pressure sensor 39. The pressure sensor 39 is positioned between the L-shaped fixing plate 37 and the triangular block 38, with a pressure-bearing diaphragm on the side of the pressure sensor 39 facing the triangular block 38. The hydraulic telescopic rod 3 is fixed to the worktable 1, and the push plate 5 is fixed to the telescopic end of the hydraulic telescopic rod 3 and faces the welded elevator component 13.

[0050] After welding is completed and the clamping is released, the hydraulic telescopic rod 3 pushes the push plate 5, causing the elevator component 13 to move towards the triangular block 38. Once the elevator component 13 contacts the triangular block 38, the triangular block 38 transmits the reaction force to the pressure sensor 39, which outputs a corresponding force signal. This signal can be compared by an external controller with a reference range set for the same specification and the same propulsion stroke to detect situations such as significant loosening of the welded components, abnormal lap gaps, or low load-bearing response. This test is a tooling test under a set load and cannot replace toughness tests such as material impact tests and tensile tests.

[0051] The cooling device includes a first push rod 11, a second push rod 10, a water cylinder 9, a water inlet pipe 8, a water outlet pipe 7, a sprayer 12, a fourth spring 41, a piston 40, and a pressure plate 43. The pressure plate 43 is fixed to the housing 2 and located on one side of the detection device, used to support the elevator component 13 as it moves to the detection and spraying position. The first push rod 11 is fixed to the push plate 5, and the second push rod 10 is fixed to the piston 40. The first push rod 11 and the second push rod 10 are coaxial and opposite each other, with a gap in the initial state. The piston 40 is sealed and slidably disposed inside the water cylinder 9. The fourth spring 41 is disposed between the piston 40 and the water cylinder 9. The water inlet pipe 8 and the water outlet pipe 7 are respectively connected to the water cylinder 9. The sprayer 12 is installed at the outlet end of the water outlet pipe 7 and faces the welded elevator component 13.

[0052] During use, the post-weld dwell time can be preset according to the material and welding process. The hydraulic telescopic rod 3 is activated after the weld has solidified. The first stroke of the push plate 5 is used to push the elevator component 13 and complete the pressure response acquisition. When the push plate 5 continues to move forward to the second stroke, the first push rod 11 contacts the second push rod 10 and pushes the piston 40. The coolant in the water cylinder 9 forms a primary spray through the outlet pipe 7 and the sprayer 12 to reduce the temperature of subsequent handling and wash away surface debris. The outlet check valve in the outlet pipe 7 is used to limit the backflow of coolant, and the inlet check valve in the inlet pipe 8 is used to prevent liquid backflow in the cylinder. When the push plate 5 resets, the first push rod 11 separates from the second push rod 10, the fourth spring 41 drives the piston 40 to reset, and the inlet pipe 8 replenishes the water cylinder 9. The sprayed liquid and debris are discharged through the drain hole located below the sprayer 12 on the worktable 1.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-toughness elevator parts welding processing device, comprising a worktable (1), a housing (2), a welding assembly, and a segmented clamping assembly, characterized in that: The housing (2) is set on the workbench (1) and forms a processing position for the elevator parts (13) to be welded; The welding assembly includes a gantry (6) that moves along the processing position and a welding device (14) disposed on the gantry. The clamping assembly includes a clamping push plate (22) that moves toward or away from the processing position and a plurality of clamping units spaced apart along the clamping push plate (22). Each clamping unit includes a protective shell that compensates for movement relative to the clamping push plate (22), a clamping plate (25) that presses against the elevator accessory (13) to be welded, a gear (24) and a cam (33) that are rotatably disposed in the protective shell, and a pin (35) that restricts the rotation of the cam (33). The cam (33) is driven to cooperate with the clamping plate (25) to switch the clamping plate (25) between the clamping position and the release position. The gantry is provided with a trapezoidal limiting block (21) and a rack sliding assembly (20) that meshes with a gear (24). The pin (35) is connected to a crossbar (29) that contacts the trapezoidal limiting block (21). When the gantry (6) moves to the corresponding clamping unit, the trapezoidal limit block (21) first drives the pin (35) to exit the locking position of the cam (33) through the crossbar (29). Then the rack and pinion sliding assembly (20) drives the gear (24) and the cam (33) to rotate. After the trapezoidal limit block (21) passes through the crossbar (29), the pin (35) restricts the rotation of the cam (33) again, so that multiple clamping units switch sequentially and maintain the clamping state as the welding device moves. The housing (2) is also provided with a detection component that applies a detection load to the welded elevator parts and collects the force response, and a spray component that is triggered by the pushing action of the detection component and sprays a cooling medium onto the welded area.

2. The high-toughness elevator component welding and processing device according to claim 1, characterized in that, The workbench (1) is provided with the housing (2), and the upper part of the housing (2) forms the bearing assembly; the housing (2) is provided with a lead screw (4) and a first limiting rod (16) arranged along the extension direction of the processing position; the gantry frame (6) is threadedly connected to the lead screw (4) and slidably connected to the first limiting rod (16); and the first motor (15) is drivenly connected to the lead screw (4).

3. The high-toughness elevator component welding and processing device according to claim 2, characterized in that, The housing (2) is provided with a limiting screw (17) and a second limiting rod (18) that are parallel to each other. The clamping push plate (22) is threadedly connected to the limiting screw (17) and slidably connected to the second limiting rod (18). The second motor (42) is drivenly connected to the limiting screw (17) to drive the clamping push plate (22) to move closer to or away from the processing position.

4. The high-toughness elevator component welding and processing device according to claim 1, characterized in that, The protective shell includes a first half-open protective shell (26), a first fixing rod (27) is provided on the clamping push plate (22), the first half-open protective shell (26) can move relative to the first fixing rod (27) along the clamping direction, and a first spring (28) is provided between the first half-open protective shell (26) and the clamping push plate (22); the clamping plate (25) is connected to a third fixing rod (30), and a second spring (31) is provided between the third fixing rod (30) and the first half-open protective shell (26).

5. The high-toughness elevator component welding and processing device according to claim 4, characterized in that, A second fixing rod (23) is rotatably arranged inside the first half-open protective shell (26). The gear (24) and the cam (33) are respectively arranged on the second fixing rod (23). The cam (33) cooperates with the third fixing rod (30). The rack sliding assembly (20) is arranged on the gantry (6) through the telescopic rod (19) and can mesh with the corresponding gear (24) under the drive of the clamping push plate (22) on the telescopic rod (19).

6. The high-toughness elevator component welding and processing device according to claim 5, characterized in that, A second half-open protective shell (32) is provided below the first half-open protective shell (26). The pin (35) is movably disposed on the second half-open protective shell (32) and can cooperate with the locking part on the cam (33). A third spring (34) is provided between the pin (35) and the second half-open protective shell (32). The third spring (34) is used to push the pin (35) to move toward the locking part. The crossbar (29) is in transmission cooperation with the pin (35).

7. The high-toughness elevator component welding and processing device according to claim 6, characterized in that, The trapezoidal limiting block (21) is disposed on both sides of the gantry frame (6). When the trapezoidal limiting block (21) moves with the gantry frame (6), it contacts the crossbar (29) so that the crossbar (29) drives the pin (35) to exit the locking part of the cam (33). The rack and pinion sliding assembly (20) meshes with the corresponding gear (24) after the pin (35) exits, and resets the pin (35) after the trapezoidal limiting block (21) passes the crossbar (29).

8. The high-toughness elevator component welding and processing device according to claim 3, characterized in that, The detection assembly includes a sliding support (36), a pressure-bearing component, a pressure sensor (39), a hydraulic telescopic rod (3), and a push plate (5). The sliding support (36) is slidably disposed on the housing (2) and connected to the clamping push plate (22). The pressure-bearing component is movably disposed on the sliding support (36). The pressure sensor (39) is disposed on the force transmission path of the pressure-bearing component. The push plate (5) is disposed at the telescopic end of the hydraulic telescopic rod (3) to push the welded elevator parts toward the pressure-bearing component.

9. A high-toughness elevator component welding and processing device according to claim 8, characterized in that, The pressure-bearing component includes a triangular block (38), and an L-shaped fixing plate (37) is provided on the sliding support (36). The triangular block (38) is slidably disposed on the sliding support (36) along the force direction of the pressure sensor (39). The pressure sensor (39) is disposed between the L-shaped fixing plate (37) and the triangular block (38), and a pressure-bearing diaphragm is provided on the side of the pressure sensor (39) facing the triangular block (38).

10. A high-toughness elevator component welding processing device according to claim 8 or 9, characterized in that, The spray assembly includes a first push rod (11), a second push rod (10), a water cylinder (9), a piston (40), a fourth spring (41), an inlet pipe (8), an outlet pipe (7), and a sprayer (12). The first push rod (11) is disposed on the push plate (5), and the second push rod (10) is connected to the piston (40). The first push rod (11) and the second push rod (10) are disposed opposite to each other along the pushing direction and have a gap in the initial state. The piston (40) is sealed and slidably disposed in the water cylinder (9). The fourth spring (41) is disposed between the piston (40) and the water cylinder (9). The inlet pipe (8) and the outlet pipe (7) are respectively connected to the water cylinder (9) and are respectively provided with one-way valves. The sprayer (12) is disposed at the outlet end of the outlet pipe (7). The workbench (1) is provided with a drain hole at the part below the sprayer (12).

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