A welding tool for an elevator car frame

Abstract

The application relates to the elevator frame welding technical field, in particular to a kind of welding tool of elevator frame.A kind of welding tool of elevator frame includes base, base is provided with the first positioning platform for positioning front partition plate and rear partition, the second positioning platform for positioning rear baffle, the third positioning platform for positioning front baffle, the fourth positioning platform for positioning support special-shaped plate, the first clamp for clamping and fixing support special-shaped plate, the second clamp for positioning front partition plate, the third clamp for clamping and fixing front partition plate, the fourth clamp for positioning rear partition plate, the fifth clamp for clamping and fixing rear partition plate, the sixth clamp for positioning base plate.The welding tool in the application can simplify welding process, improve welding efficiency, welding operation meets assembly installation requirements, and shortens the delivery cycle of elevator frame.

Description

Technical Field

[0001] This application relates to the field of elevator frame welding technology, and in particular to a welding fixture for elevator frames. Background Technology

[0002] As a multi-functional lifting machinery, the elevator is widely used in construction, factory workshops, logistics transportation, container freight, industrial production and other fields. It can effectively solve various lifting operation problems and improve production efficiency. The elevator frame is usually welded from high-strength steel.

[0003] refer to Figure 1 The existing elevator frame structure includes a base plate 100. L-shaped baffles 101 are welded to both sides of the upper surface of the base plate 100 along its length. A rear baffle 102 is welded to one side of the base plate 100 along its width. The base plate 100 has two positioning holes 1001, located near the rear baffle 102. Square tubes 103, providing support, are welded to both sides of the lower surface of the base plate 100 along its length. Side baffles 104 are welded to both sides of the lower surface of the base plate 100 along its length, with the two square tubes 103 located between the two side baffles 104. The lower surface of the base plate 100 includes two spaced-apart front partition plates 105 and rear partition plates 106, both sides of which are welded to the inner walls of the two side baffles 104. The vertical projection of the positioning holes 1001 lies between the vertical projections of the rear baffle 102 and the rear partition plate 106. The bottom of the front partition plate 105 has two spaced-apart positioning tooling holes A1051, and a positioning annular post A is coaxially welded to the positioning tooling hole A1051. The bottom of the rear partition plate 106 has two spaced-apart positioning tooling holes B1061, and a positioning annular post B is coaxially welded to the positioning tooling hole B1061; the upper part of the rear partition plate 106 has a positioning tooling hole C1062. A front baffle 107 is welded to the lower surface of the base plate 100, and both sides of the front baffle 107 are welded to the inner walls of two side baffles 104. Between the front baffle 107 and the front partition plate 105, two spaced-apart support plates 108 for mounting the front wheels are welded, and the support plates 108 have through holes 1081 for mounting the front wheel axles. The existing frame of the lifting platform is made by manually welding and calibrating the various components in sequence, which has the problems of low production efficiency, complex process and long delivery cycle of the frame of the lifting platform. Utility Model Content

[0004] To address the technical problems of low production efficiency, complex processes, and long processing cycles in existing elevator frames, this application provides a welding fixture for elevator frames.

[0005] The welding fixture for a lifting platform frame provided in this application is achieved through the following technical solution: A welding fixture for a lifting platform frame includes a base, which is provided with a first positioning platform for positioning a front partition plate and a rear partition plate; a second positioning platform for positioning a rear baffle plate; a third positioning platform for positioning the front baffle plate; a fourth positioning platform for positioning a support plate; a first clamp for clamping and fixing the support plate; a second clamp for positioning the front partition plate; a third clamp for clamping and fixing the front partition plate; a fourth clamp for positioning the rear partition plate; a fifth clamp for clamping and fixing the rear partition plate; and a sixth clamp for positioning a base plate.

[0006] The welding fixtures in this application can simplify the welding process, improve welding efficiency, ensure that the welding operation meets the assembly and installation requirements, and shorten the delivery cycle of the elevator frame.

[0007] Preferably, the first positioning platform includes a lifting block A connected to the base and a positioning plane connected to the lifting block A, with the lower surface of the front partition plate in contact with the positioning plane and the lower surface of the rear partition plate in contact with the positioning plane.

[0008] Preferably, the second positioning platform includes a base plate A connected to the base and a vertical plate A vertically connected to the base plate A, with the lower surface of the rear baffle in contact with the upper surface of the vertical plate A.

[0009] Preferably, the third positioning platform includes a base plate B connected to the base and a vertical plate B vertically connected to the base plate B, with the lower surface of the front baffle in contact with the upper surface of the vertical plate B.

[0010] Preferably, the fourth positioning platform includes a vertical plate C vertically connected to the base plate B, a base plate C connected to the base, a vertical plate D vertically connected to the base plate C, and a positioning plate connected to the upper surfaces of the vertical plates C and D. The side of the positioning plate contacts the inner side of the supporting irregular plate. A notch A is formed on the upper surface of the vertical plate C. A notch B is formed on the upper surface of the vertical plate D. The lower surface of the supporting irregular plate contacts the upper surface of the notch A of the vertical plate C and also contacts the upper surface of the notch B of the vertical plate D.

[0011] Preferably, the first clamp includes a base plate D connected to the base, a vertical plate E vertically connected to the base plate D, and a reinforcing rib A vertically connected to the base plate D. The side of the reinforcing rib A is connected to the vertical plate E. A cylinder A is connected to the side of the vertical plate E. The push rod of the cylinder A is connected to a disc-shaped clamp for clamping and fixing the support plate, so that the inner side of the support plate is in close contact with the side of the positioning plate.

[0012] Preferably, the second clamp includes a base plate E connected to the base, a vertical plate F vertically connected to the base plate E, and a reinforcing rib B vertically connected to the base plate E, with the reinforcing rib B connected to the vertical plate F on its side; a clamp mounting block is connected to the upper surface of the base plate E; the clamp mounting block is provided with a sliding column hinge clamp for positioning the front partition plate; the sliding column hinge clamp passes through the positioning tooling hole A of the front partition plate to complete the positioning of the front partition plate.

[0013] Preferably, the third clamp includes a base plate F connected to the base, a vertical plate G vertically connected to the base plate F, a support plate A connected to the upper surface of the vertical plate G, and a cylinder B connected to the upper surface of the support plate A; the push rod of the cylinder B is connected to a rectangular clamping piece for clamping and fixing the front partition plate, so that the side of the front partition plate is in close contact with the side of the vertical plate F, thereby completing the positioning and clamping of the front partition plate.

[0014] Preferably, the fourth clamp includes a base plate G connected to the base, a lifting block B connected to the upper surface of the base plate G, and a cylinder C connected to the upper surface of the lifting block B; the push rod of the cylinder C passes through the positioning tooling hole B of the rear partition plate to complete the positioning of the rear partition plate.

[0015] Preferably, the fifth clamp includes a base plate H connected to the base, a vertical plate H perpendicularly connected to the base plate H, and a cylinder D connected to the side of the vertical plate H; the push rod of the cylinder D passes through the positioning tooling hole C of the rear partition plate; the push rod of the cylinder D is detachably connected to a positioning clamping piece; the positioning clamping piece abuts against one side of the rear partition plate, and the cylinder D can make the rear partition plate abut against the vertical plate H to complete the positioning, clamping and fixing of the rear partition plate.

[0016] Preferably, the sixth clamp includes a vertical plate I vertically connected to the base plate H, a support plate B connected to the upper surface of the vertical plate I, a cylinder E connected to the lower surface of the support plate B and located on one side of the vertical plate I, and a vertical plate J connected to the upper surface of the support plate B. The upper surface of the vertical plate J is in contact with the lower surface of the substrate. The push rod of the cylinder E passes through the positioning holes of the support plate B and the substrate in sequence to complete the positioning and fixing of the substrate.

[0017] In summary, this application has the following advantages: 1. The welding fixture of this application can simplify the welding process, improve welding efficiency, ensure that the welding operation meets the assembly and installation requirements, and shorten the delivery cycle of the elevator frame.

[0018] 2. The welding fixture of this application can simplify the welding calibration process and improve the efficiency of welding operations. Attached Figure Description

[0019] Figure 1 These are structural diagrams of the elevator frame from different perspectives.

[0020] Figure 2These are structural diagrams of the elevator frame from different perspectives, demonstrating... Figure 1 Positioning holes on the substrate that are not visible in the image.

[0021] Figure 3 This is a schematic diagram of the overall structure of the welding fixture for the elevator frame.

[0022] Figure 4 This is a partial structural diagram of the welding fixture for the elevator frame, mainly showing the structure of the first positioning platform, the third positioning platform, and the fourth positioning platform. Figure 5 This is a partial structural diagram of the welding fixture for the elevator frame, mainly showing the structure of the second positioning platform, the first clamp, the third clamp, the fourth clamp, and the sixth clamp.

[0023] Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle.

[0024] Figure 7 This is a partial structural diagram of the welding fixture for the elevator frame, mainly showing the structure of the fourth clamp.

[0025] In the diagram, 1. Base; 100. Base plate; 1001. Positioning hole; 101. L-shaped baffle; 102. Rear baffle; 103. Square tube; 104. Side baffle; 105. Front partition plate; 1051. Positioning fixture hole A; 106. Rear partition plate; 1061. Positioning fixture hole B; 1062. Positioning fixture hole C; 107. Front baffle; 108. Supporting irregular plate; 1081. Through hole; 2. First positioning platform; 21. Lifting block A; 22. Positioning plane; 3. Second positioning platform; 31. Base plate A; 32. Vertical plate A; 4. Third positioning platform; 41. Base plate B; 42. Vertical plate B; 5. Fourth positioning platform; 51. Vertical plate C; 511. Notch A; 52. Base plate C; 53. Vertical plate D; 531. Notch B; 5 4. Positioning plate; 6. First clamp; 61. Base plate D; 62. Vertical plate E; 63. Reinforcing rib A; 64. Cylinder A; 65. Disc clamp; 7. Second clamp; 70. Third clamp; 701. Base plate F; 702. Vertical plate G; 703. Bearing plate A; 704. Cylinder B; 705. Rectangular clamp; 71. Base plate E; 72. Vertical plate F; 73. Reinforcing rib A; 74. Cylinder B; 75. Rectangular clamp; 76. Base plate E; 77. Vertical plate F; 78. Reinforcing rib A; 79. Reinforcing rib A; 70 ... 74. Rib B; 75. Fixture mounting block; 8. Sliding column hinge clamp; 9. Fourth fixture; 10. Fifth fixture; 11. Base plate H; 12. Vertical plate H; 13. Cylinder D; 14. Positioning clamp; 15. Base plate G; 16. Lifting block B; 17. Cylinder C; 18. Sixth fixture; 19. Vertical plate I; 10. Bearing plate B; 11. Cylinder E; 12. Vertical plate J. Detailed Implementation

[0026] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example: Refer to Figure 3 A welding fixture for a lifting platform frame includes a base 1, a first positioning platform 2 for positioning a front partition plate 105 and a rear partition plate 106, a second positioning platform 3 for positioning a rear baffle 102, a third positioning platform 4 for positioning a front baffle 103, a fourth positioning platform 5 for positioning and supporting a shaped plate 108, a first clamp 6 for clamping and fixing the shaped plate 108, a second clamp 7 for positioning the front partition plate 105, a third clamp 70 for clamping and fixing the front partition plate 105, a fourth clamp 8 for positioning the rear partition plate 106, a fifth clamp 80 for clamping and fixing the rear partition plate 106, and a sixth clamp 9 for positioning a base plate 100.

[0028] Reference Figure 3 The first positioning platform 2 includes a lifting block A21 that is detachably and fixedly connected to the base 1 by bolts, and a positioning plane 22 that is detachably and fixedly connected to the upper surface of the lifting block A21 by bolts. The function of the positioning plane 22 is to position the front partition 105 and the rear partition 106. Specifically, the lower surface of the front partition 105 is in contact with the positioning plane 22, and the lower surface of the rear partition 106 is in contact with the positioning plane 22.

[0029] Reference Figure 3 and Figure 5 The second positioning platform 3 includes a base plate A31 that is detachably and fixedly connected to the base 1 by bolts, and a vertical plate A32 that is vertically and fixedly connected to the base plate A31. The function of the vertical plate A32 is to position the rear baffle 102. Specifically, the lower surface of the rear baffle 102 is in contact with the upper surface of the vertical plate A32.

[0030] Reference Figure 3 The third positioning platform 4 includes a base plate B41 that is detachably and fixedly connected to the base 1 by bolts, and a vertical plate B42 that is vertically connected to the base plate B41. The lower surface of the front baffle 103 is in contact with the upper surface of the vertical plate B42. Reference Figure 3 and Figure 4The fourth positioning platform 5 includes a vertical plate C51 vertically and fixedly connected to the base plate B41, a base plate C52 detachably and fixedly connected to the base 1 by bolts, a vertical plate D53 vertically and fixedly connected to the base plate C52, and a positioning plate 54 fixedly connected to the upper surface of the vertical plates C51 and D53. The side of the positioning plate 54 along its length direction contacts the inner side of the supporting irregular plate 108. The vertical plates C51 and D53 have the same structure. The upper surface of the vertical plate C51 has a notch A511, and the upper surface of the vertical plate D53 has a notch B531, for positioning the supporting irregular plate 108. Specifically, the lower surface of the supporting irregular plate 108 contacts the upper surface of the notch A511 of the vertical plate C51, and the lower surface of the supporting irregular plate 108 also contacts the upper surface of the notch B531 of the vertical plate D53.

[0031] Reference Figure 3 and Figure 5 The first clamp 6 is used to clamp and fix the shaped support plate 108 after it has been positioned, facilitating welding operations by humans or robotic arms. The first clamp 6 includes a base plate D61 that is detachably and fixedly connected to the base 1 by bolts, a vertical plate E62 that is vertically and fixedly connected to the base plate D61, and a reinforcing rib A63 that is vertically and fixedly connected to the base plate D61. The side of the reinforcing rib A63 is fixedly connected to the vertical plate E62. A cylinder A64 is fixedly connected to the side of the vertical plate E62. The push rod of the cylinder A64 is connected to a disc clamp 65 for clamping and fixing the shaped support plate 108. The cylinder A64 drives the disc clamp 65 to move. After the disc clamp 65 abuts against the side of the shaped support plate 108, it pushes the shaped support plate 108 towards the positioning plate 54, so that the inner side of the shaped support plate 108 is tightly attached to the side of the positioning plate 54, thus completing the clamping and fixing of the shaped support plate 108 after it has been positioned.

[0032] Reference Figure 5 and Figure 6 The second clamp 7 is used to position the front partition plate 105. The second clamp 7 includes a base plate E71 detachably and fixedly connected to the base 1 by bolts, a vertical plate F72 vertically and fixedly connected to the base plate E71, and a reinforcing rib B73 vertically and fixedly connected to the base plate E71. The reinforcing rib B73 is also fixedly connected to the vertical plate F72 on its side. A clamp mounting block 74 is fixedly connected to the upper surface of the base plate E71. The clamp mounting block 74 is connected to a sliding column hinge clamp 75 for positioning the front partition plate 105. By moving the sliding column hinge clamp 75, the sliding column of the sliding column hinge clamp 75 passes through the positioning tooling hole A1051 of the front partition plate 105, thus completing the positioning of the front partition plate 105.

[0033] Reference Figure 5 and Figure 6The sliding column hinge clamp 75 is an existing hinge clamp, including a mounting block vertically and fixedly connected to the base plate 71, a connector 751 fixedly connected to the mounting block, a hinge adapter 752 hinged to one end of the connector 751, a handle 753 hinged to the hinge adapter 752, a sliding column hinge fitting 754 hinged to the hinge adapter 752, a sliding column 755 hinged to the sliding column hinge fitting 754, and a sliding sleeve 756 fixedly connected to the clamp mounting block 74. One end of the sliding column hinge fitting 754 is hinged to the hinge adapter 752 and the other end is hinged to the sliding column 755. One end of the connector 751 is hinged to the hinge adapter 752, and the other end of the connector 751 is fixedly connected to the periphery of the sliding column 755. That is, by adjusting the handle 753, the sliding column 755 can move axially within the sliding sleeve 756 to position the front partition plate 105.

[0034] Reference Figure 3 and Figure 5 The third clamp is used to position and clamp the front partition plate 105. The third clamp 70 includes a base plate F701 that is detachably and fixedly connected to the base 1 by bolts, a vertical plate G702 that is vertically and fixedly connected to the base plate F701, a support plate A703 that is fixedly connected to the upper surface of the vertical plate G702, and a cylinder B704 that is fixedly connected to the upper surface of the support plate A703. The push rod of the cylinder B704 is connected to a rectangular clamping piece 705 for clamping and fixing the front partition plate 105. The cylinder B704 drives the rectangular clamping piece 705 to move, so that the side of the front partition plate 105 is in close contact with the side of the vertical plate F72, thus completing the positioning and clamping of the front partition plate 105.

[0035] Reference Figure 3 and Figure 5 The fourth clamp 8 is used to position the rear partition plate 106. The fourth clamp 8 includes a base plate G81 that is detachably and fixedly connected to the base 1 by bolts, a lifting block B82 fixedly connected to the upper surface of the base plate G81, and a cylinder C83 fixedly connected to the upper surface of the lifting block B82. The push rod of the cylinder C83 passes through the positioning tooling hole B1061 of the rear partition plate 106 to complete the positioning of the rear partition plate 106.

[0036] Reference Figure 3 and Figure 7The fifth clamp 80 is used for positioning and clamping the rear partition plate 106. The fifth clamp 80 includes a base plate H801 detachably and fixedly connected to the base 1 by bolts, a vertical plate H802 vertically and fixedly connected to the base plate H801, and a cylinder D803 fixedly connected to the side of the vertical plate H802. The push rod of the cylinder D803 passes through the positioning tooling hole C1062 of the rear partition plate 106. The push rod of the cylinder D803 is detachably and fixedly connected to a positioning clamping piece 804. The specific operation process is as follows: To position the rear partition plate 106, the push rod of the cylinder D803 passes through the positioning tooling hole C1062 of the rear partition plate 106, and the positioning clamping piece 804 is fixedly connected to the push rod of the cylinder D803 by a snap-fit ​​mechanism, so that the rear partition plate 106 is located between the vertical plate H802 and the positioning clamping piece 804. The positioning clip 804 abuts against one side of the rear partition plate 106. The cylinder D803 can make the rear partition plate 106 abut against the vertical plate H802, thus completing the positioning and clamping of the rear partition plate 106.

[0037] Reference Figure 3 The sixth clamp 9 is used to position and fix the substrate 100. The sixth clamp 9 includes a vertical plate I91 fixedly connected to the base plate H801, a support plate B92 fixedly connected to the upper surface of the vertical plate I91, a cylinder E93 fixedly connected to the lower surface of the support plate B92 and located on one side of the vertical plate I91, and a vertical plate J94 fixedly connected to the upper surface of the support plate B92. The upper surface of the vertical plate J94 contacts the lower surface of the substrate 100, thus positioning the substrate 100. The push rod of the cylinder E93 passes through the positioning hole 1001 of the support plate B92 and the substrate 100 in sequence, thus fixing the substrate 100.

[0038] The welding fixtures in this application can simplify the welding process, improve welding efficiency, ensure that the welding operation meets the assembly and installation requirements, and shorten the delivery cycle of the elevator frame.

[0039] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A welding fixture for a lifting platform frame, characterized in that: The system includes a base (1), which is provided with a first positioning platform (2) for positioning the front partition (105) and the rear partition (106); a second positioning platform (3) for positioning the rear baffle (102); a third positioning platform (4) for positioning the front baffle (103); a fourth positioning platform (5) for positioning and supporting the irregular plate (108); and a clamping and fixing support for the irregular plate. The base (1) is provided with a first clamp (6) for the plate (108); the base (1) is provided with a second clamp (7) for positioning the front partition plate (105); the base (1) is provided with a third clamp (70) for clamping and fixing the front partition plate (105); the base (1) is provided with a fourth clamp (8) for positioning the rear partition plate (106); the base (1) is provided with a fifth clamp (80) for clamping and fixing the rear partition plate (106); the base (1) is provided with a sixth clamp (9) for positioning the base plate (100).

2. The welding fixture for a lifting platform frame according to claim 1, characterized in that: The first positioning platform (2) includes a lifting block A (21) connected to the base (1) and a positioning plane (22) connected to the lifting block A (21). The lower surface of the front partition plate (105) is in contact with the positioning plane (22); the lower surface of the rear partition plate (106) is in contact with the positioning plane (22).

3. The welding fixture for a lifting platform frame according to claim 1, characterized in that: The second positioning platform (3) includes a base plate A (31) connected to the base (1) and a vertical plate A (32) vertically connected to the base plate A (31). The lower surface of the rear baffle (102) is in contact with the upper surface of the vertical plate A (32). The third positioning platform (4) includes a base plate B (41) connected to the base (1) and a vertical plate B (42) vertically connected to the base plate B (41). The lower surface of the front baffle (103) is in contact with the upper surface of the vertical plate B (42).

4. The welding fixture for a lifting platform frame according to claim 1, characterized in that: The fourth positioning platform (5) includes a vertical plate C (51) vertically connected to the base plate B (41), a base plate C (52) connected to the base (1), a vertical plate D (53) vertically connected to the base plate C (52), and a positioning plate (54) connected to the upper surfaces of the vertical plate C (51) and the vertical plate D (53). The side of the positioning plate (54) is in contact with the inner side of the supporting irregular plate (108). The upper surface of the vertical plate C (51) is provided with a notch A (511). The upper surface of the vertical plate D (53) is provided with a notch B (531). The lower surface of the supporting irregular plate (108) is in contact with the upper surface of the notch A (511) of the vertical plate C (51) and also with the upper surface of the notch B (531) of the vertical plate D (53).

5. The welding fixture for a lifting platform frame according to claim 4, characterized in that: The first clamp (6) includes a base plate D (61) connected to the base (1), a vertical plate E (62) vertically connected to the base plate D (61), and a reinforcing rib A (63) vertically connected to the base plate D (61). The side of the reinforcing rib A (63) is connected to the vertical plate E (62). The side of the vertical plate E (62) is connected to a cylinder A (64). The push rod of the cylinder A (64) is connected to a disc clamp (65) for clamping and fixing the support irregular plate (108), so that the inner side of the support irregular plate (108) is in close contact with the side of the positioning plate (54).

6. The welding fixture for a lifting platform frame according to claim 1, characterized in that: The second fixture (7) includes a base plate E (71) connected to the base (1), a vertical plate F (72) vertically connected to the base plate E (71), and a reinforcing rib B (73) vertically connected to the base plate E (71). The reinforcing rib B (73) is connected to the vertical plate F (72) on its side. A fixture mounting block (74) is connected to the upper surface of the base plate E (71). The fixture mounting block (74) is provided with a sliding column hinge clamp (75) for positioning the front partition plate (105). The sliding column hinge clamp (75) passes through the positioning tooling hole A (1051) of the front partition plate (105) to complete the positioning of the front partition plate (105).

7. The welding fixture for a lifting platform frame according to claim 6, characterized in that: The third clamp (70) includes a base plate F (701) connected to the base (1), a vertical plate G (702) vertically connected to the base plate F (701), a support plate A (703) connected to the upper surface of the vertical plate G (702), and a cylinder B (704) connected to the upper surface of the support plate A (703). The push rod of the cylinder B (704) is connected to a rectangular clamping piece (705) for clamping and fixing the front partition plate (105), so that the side of the front partition plate (105) is in close contact with the side of the vertical plate F (72), thereby completing the positioning and clamping of the front partition plate (105).

8. The welding fixture for a lifting platform frame according to claim 1, characterized in that: The fourth clamp (8) includes a base plate G (81) connected to the base (1), a lifting block B (82) connected to the upper surface of the base plate G (81), and a cylinder C (83) connected to the upper surface of the lifting block B (82); the push rod of the cylinder C (83) passes through the positioning tooling hole B (1061) of the rear partition plate (106) to complete the positioning of the rear partition plate (106).

9. The welding fixture for a lifting platform frame according to claim 8, characterized in that: The fifth clamp (80) includes a base plate H (801) connected to the base (1), a vertical plate H (802) vertically connected to the base plate H (801), and a cylinder D (803) connected to the side of the vertical plate H (802). The push rod of the cylinder D (803) passes through the positioning tooling hole C (1062) of the rear partition plate (106). The push rod of the cylinder D (803) is detachably connected to a positioning clamping piece (804). The positioning clamping piece (804) abuts against one side of the rear partition plate (106). The cylinder D (803) can make the rear partition plate (106) abut against the vertical plate H (802) to complete the positioning and clamping of the rear partition plate (106).

10. The welding fixture for a lifting platform frame according to claim 7, characterized in that: The sixth clamp (9) includes a vertical plate I (91) vertically connected to the base plate H (801), a support plate B (92) connected to the upper surface of the vertical plate I (91), a cylinder E (93) connected to the lower surface of the support plate B (92) and located on one side of the vertical plate I, and a vertical plate J (94) connected to the upper surface of the support plate B (92). The upper surface of the vertical plate J (94) is in contact with the lower surface of the substrate (100). The push rod of the cylinder E (93) passes through the positioning holes (1001) of the support plate B (92) and the substrate (100) in sequence to complete the positioning and fixing of the substrate (100).

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