Auxiliary welding tool for top frame of hoistway ladder

Abstract

The utility model belongs to the technical field of engineering machinery and provides a shaft ladder top frame auxiliary welding tool which comprises a welding platform and a movable pressing mechanism, the welding platform is provided with a workpiece placing position, and the movable pressing mechanism comprises a movable support and a movable pressing piece. The movable support is arranged in a sliding mode, at least part of the movable support extends to the position above the workpiece placing position, the movable pressing piece is arranged on the movable support and located above the workpiece placing position, and the movable pressing piece is used for pressing the shaft ladder top frame on the workpiece placing position in the Z-axis direction. According to the tool, Z-axis pressing can be rapidly conducted on a top plate and a bottom frame near a welding point, rapid adjustment of the pressing position of the movable pressing piece can be achieved, the welding quality is guaranteed, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction machinery, and particularly relates to an auxiliary welding tooling for a hoistway ladder top frame. Background Art

[0002] In order to facilitate the installation of a construction hoist, the existing hoistway ladders have been developed towards modularization. The hoistway ladder top frame, as a component of the double-cage top structure at the top of the hoistway ladder, is a general term for two types of components, namely the cage top and the ceiling. The structures of the cage top and the ceiling are very similar, both consisting of a bottom frame and a top plate. Among them, the top plate is generally a T3 thin plate or a checkered steel plate. When the top plate is welded to the bottom frame, since the top plate is relatively thin and the weld seam is long, it is necessary to use a clamp to clamp the top plate near the welding point to the bottom frame. As the welding point moves, it is necessary to manually frequently switch the position of the clamp. Manually disassembling and assembling the clamp not only takes a lot of time, resulting in very low production efficiency, but also the clamping effect of this clamping method is unstable, and it is difficult to ensure the welding gap between the bottom frame and the top plate. Summary of the Utility Model

[0003] Aiming at the above defects or deficiencies, the utility model provides an auxiliary welding tooling for a hoistway ladder top frame, aiming to solve the technical problem that the adjustment of the clamp position takes a lot of time during the welding of the existing hoistway ladder top frame, resulting in low production efficiency.

[0004] To achieve the above object, the utility model provides an auxiliary welding tooling for a hoistway ladder top frame. The auxiliary welding tooling for a hoistway ladder top frame includes a welding platform and a movable pressing mechanism. The welding platform is provided with a workpiece placement position. The movable pressing mechanism includes a movable support and a movable pressing member. The movable support is slidably arranged and at least partially extends above the workpiece placement position. The movable pressing member is arranged on the movable support and is located above the workpiece placement position. The movable pressing member is used to press the hoistway ladder top frame on the workpiece placement position along the Z-axis direction.

[0005] In an embodiment of the utility model, the welding platform is provided with a sliding guide member extending along a first direction. The sliding guide member is located on the side of the workpiece placement position in a second direction, and the second direction is perpendicular to the first direction in the horizontal direction. The movable support includes a first support portion slidably engaged with the sliding guide member and a second support portion extending above the workpiece placement position. The movable pressing member is arranged on the second support portion.

[0006] In an embodiment of the utility model, the second support portion spans the workpiece placement position along the second direction. Sliding guide members are provided on both sides of the workpiece placement position in the second direction. First support portions are respectively provided at both ends of the second support portion, and the first support portions at both ends are respectively slidably engaged with the corresponding sliding guide members.

[0007] In an embodiment of the present utility model, the number of movable pressing members is multiple, and the multiple movable pressing members are arranged at intervals along the second direction on the second support portion.

[0008] In an embodiment of the present utility model, the number of movable brackets is multiple, the multiple movable brackets are sequentially arranged on the sliding guide member, and a movable pressing member is provided on each sliding guide member.

[0009] In an embodiment of the present utility model, the welding platform is flip - settable, and the auxiliary welding tooling for the shaft top ladder frame further includes a positioning and clamping mechanism arranged around the workpiece placement position, and the positioning and clamping mechanism is used for three - axis positioning and clamping and fixing of the shaft top ladder frame placed on the workpiece placement position.

[0010] In an embodiment of the present utility model, the positioning and clamping mechanism includes an X - axis clamping assembly and a Y - axis clamping assembly. The X - axis clamping assembly includes an X - axis reference block and an X - axis pushing member which are arranged on the welding platform and are respectively located on opposite sides of the workpiece placement position in the first direction. The Y - axis clamping assembly includes a Y - axis reference block and a Y - axis pushing member which are arranged on the welding platform and are respectively located on opposite sides of the workpiece placement position in the second direction.

[0011] In an embodiment of the present utility model, the welding platform includes a bottom platform body and a first mounting seat, a second mounting seat, a third mounting seat, and a fourth mounting seat arranged on the bottom platform body. The first mounting seat and the second mounting seat are arranged at intervals along the first direction, the third mounting seat and the fourth mounting seat are arranged at intervals along the second direction, and the first mounting seat, the second mounting seat, the third mounting seat, and the fourth mounting seat jointly enclose to form a workpiece placement position. The X - axis reference block and the X - axis pushing member are respectively arranged on the first mounting seat and the second mounting seat, and the Y - axis reference block and the Y - axis pushing member are respectively arranged on the third mounting seat and the fourth mounting seat.

[0012] In an embodiment of the present utility model, a plurality of groups of first adjustment hole groups are arranged at intervals along the first direction on the bottom platform body, and the first mounting seat and / or the second mounting seat are selectively detachably installed with one of the groups of first adjustment hole groups on the corresponding side.

[0013] In an embodiment of the present utility model, the positioning and clamping mechanism further includes a third pressing assembly. The third pressing assembly includes a plurality of Z - axis fixed pressing members, and the plurality of Z - axis fixed pressing members are respectively arranged on the first mounting seat and the second mounting seat in opposite directions, and / or the plurality of Z - axis fixed pressing members are respectively arranged on the third mounting seat and the fourth mounting seat in opposite directions.

[0014] Through the above - mentioned technical solution, the auxiliary welding tooling for the shaft top ladder frame provided by the embodiment of the present utility model has the following beneficial effects:

[0015] The hoistway ladder top frame generally consists of a bottom frame and a top plate. After the bottom frame and the top plate are placed in place at the workpiece placement position, by moving the movable support, the movable pressing member can be moved to the vicinity of the welding point. At this time, operating the movable pressing member can press the top plate near the welding point against the bottom frame, thereby ensuring the weld gap between the bottom frame and the top plate at the welding point during welding, reducing the deformation of the top plate at the welding point, and ensuring the welding quality. As the welding point moves, when it is necessary to adjust the pressing position of the movable pressing member, only need to loosen the movable pressing member and then move the movable support. In summary, the auxiliary welding tooling for the hoistway ladder top frame in the present utility model can quickly perform Z-axis pressing on the top plate and the bottom frame near the welding point, thereby ensuring the welding quality between the top plate and the bottom frame. At the same time, as the welding point moves, the pressing position of the movable pressing member can also be quickly adjusted, thereby greatly shortening the time spent on adjusting the clamping position and effectively improving the production efficiency.

[0016] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation section. Brief Description of the Drawings

[0017] The drawings are used to provide an understanding of the present utility model and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic structural diagram of the auxiliary welding tooling for the hoistway ladder top frame in the embodiment of the present utility model from the first perspective;

[0019] Figure 2 is a schematic structural diagram of the auxiliary welding tooling for the hoistway ladder top frame in the embodiment of the present utility model from the second perspective.

[0020] Description of the Reference Numerals in the Drawings

[0021] 1. Welding platform; 11. Bottom platform body; 12. First mounting seat; 13. Second mounting seat; 14. Third mounting seat; 15. Fourth mounting seat; 16. First adjustment hole group; 17. Matching hole; 18. Sliding guide; 2. Movable pressing mechanism; 21. Movable support; 211. First support part; 212. Second support part; 22. Movable pressing member; 31. X-axis clamping assembly; 311. X-axis reference block; 312. X-axis pushing member; 32. Y-axis clamping assembly; 321. Y-axis reference block; 322. Y-axis pushing member; 33. Z-axis fixed pressing member; K. Workpiece placement position; 41. Frame; 42. Pivot shaft; 43. Pivot mounting seat; 5. Hoistway ladder top frame. Specific Implementation

[0022] The following is a detailed description of specific embodiments of the present utility model in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0023] The auxiliary welding tooling for the hoistway ladder top frame of the present utility model will be described below with reference to the accompanying drawings.

[0024] The present utility model provides an auxiliary welding tooling for a hoistway ladder top frame, as Figure 1 and Figure 2 shown, the auxiliary welding tooling for the hoistway ladder top frame includes a welding platform 1 and a movable pressing mechanism 2.

[0025] A workpiece placement position K is provided on the welding platform 1, and the workpiece placement position K is used for placing the hoistway ladder top frame 5.

[0026] The movable pressing mechanism 2 includes a movable bracket 21 and a movable pressing member 22. The movable bracket 21 is slidably arranged and at least partially extends above the workpiece placement position K. The movable pressing member 22 is arranged on the movable bracket 21 and is located above the workpiece placement position K. The movable pressing member 22 is used to press the hoistway ladder top frame 5 on the workpiece placement position K in the Z-axis direction.

[0027] The hoistway ladder top frame 5 generally consists of a bottom frame and a top plate. After the bottom frame and the top plate are placed in place on the workpiece placement position K, by moving the movable bracket 21, the movable pressing member 22 can be moved to the vicinity of the welding point. At this time, operating the movable pressing member 22 can press the top plate near the welding point against the bottom frame, thereby ensuring the weld gap between the bottom frame and the top plate at the welding point during welding, reducing the deformation of the top plate at the welding point, and ensuring the welding quality. As the welding point moves, when it is necessary to adjust the pressing position of the movable pressing member 22, only need to loosen the movable pressing member 22 and then move the movable bracket 21. In summary, the auxiliary welding tooling for the hoistway ladder top frame in the present utility model can quickly perform Z-axis pressing on the top plate and the bottom frame near the welding point, thereby ensuring the welding quality between the top plate and the bottom frame. At the same time, as the welding point moves, the pressing position of the movable pressing member 22 can also be quickly adjusted, thereby greatly shortening the time spent on adjusting the clamping position and effectively improving the production efficiency.

[0028] In an embodiment of the present utility model, the movable pressing member 22 can be a pure mechanical pressing device such as a push-pull clamp or a vertical clamp, or an electrically driven telescopic driving member such as a cylinder, an electric cylinder, or an oil cylinder.

[0029] In an embodiment of the present utility model, there are many ways to slidably arrange the movable bracket 21, such as Figure 1 and Figure 2As shown, a sliding guide 18 can be provided on the welding platform 1. The movable bracket 21 can include a first bracket portion 211 that slidably cooperates with the sliding guide 18 and a second bracket portion 212 that extends above the workpiece placement position K. By arranging the movable pressing member 22 on the second bracket portion 212, it is convenient to perform Z-axis pressing on the shaft top frame 5 at the workpiece placement position K.

[0030] As Figure 1 and Figure 2 shown, in an embodiment of the present invention, the sliding guide 18 can extend along a first direction or other directions. The first direction refers to the same direction as the X-axis direction (length direction) of the shaft top frame 5 when the shaft top frame 5 is placed at the workpiece placement position K, and the second direction refers to the same direction as the Y-axis direction (width direction) of the shaft top frame 5 when the shaft top frame 5 is placed at the workpiece placement position K. When the shaft top frame 5 is welded, it is generally welded sequentially along the X-axis direction (length direction) and the Y-axis direction (width direction) of the shaft top frame 5. Therefore, in order to facilitate the movable pressing member 22 to quickly move to the vicinity of the welding point, the sliding guide 18 can be arranged to extend along the first direction.

[0031] As Figure 1 shown, when the sliding guide 18 extends along the first direction, in order to facilitate the movable pressing member 22 to quickly move to the vicinity of the welding point during welding in the Y-axis direction, the second bracket portion 212 can be arranged to straddle the workpiece placement position K along the second direction, and a plurality of movable pressing members 22 arranged at intervals along the second direction can be provided on the second bracket portion 212.

[0032] In an embodiment of the present invention, the sliding guide 18 can also be arranged to extend along the second direction. At this time, the second bracket portion 212 needs to straddle the workpiece placement position K along the first direction.

[0033] As Figure 1 and Figure 2 shown, in an embodiment of the present invention, the sliding guide 18 can be located on the side of the workpiece placement position K to avoid the upper area of the shaft top frame 5, so as to facilitate the shaft top frame 5 to enter and exit the workpiece placement position K.

[0034] In an embodiment of the present invention, the movable bracket 21 can be completely moved out from above the workpiece placement position K, that is, the movable bracket 21 can be moved to the outside of the first mounting seat 12 or the second mounting seat 13.

[0035] In an embodiment of the present invention, the sliding guide 18 can be structures such as a slide rail and a chute. The movement of the movable bracket 21 on the sliding guide 18 can be driven manually or by electrical components, such as a lead screw motor, a rack motor, etc.

[0036] AsFigure 1 and Figure 2 As shown in Figure 2 , in the embodiment of the present utility model, according to the different spanning directions of the movable bracket 21, sliding guides 18 can be provided on both sides of the workpiece placement position K in the first direction or both sides in the second direction. First support parts 211 can be respectively provided at both ends of the second support part 212, and the first support parts 211 at both ends can be respectively in sliding fit with the corresponding sliding guides 18 on the corresponding side. At this time, the movable bracket 21 is in a "door" shape, and this shape can not only realize the stable movement of the movable bracket 21, but also maintain the structural stability when the movable pressing part presses in the Z-axis direction.

[0037] As Figure 1 and Figure 2 As shown in Figure 2 , in the embodiment of the present utility model, the number of movable brackets 21 is multiple, and the multiple movable brackets 21 are sequentially arranged on the sliding guides 18, and a movable pressing part 22 is provided on each sliding guide 18. By providing multiple movable brackets 21, the pressing range of the movable pressing mechanism 2 in the first direction can be increased, and the adjustment frequency of the movable brackets 21 can be reduced.

[0038] As Figure 1 and Figure 2 As shown in Figure 2 , in the embodiment of the present utility model, the welding platform 1 is preferably rotatably arranged. By rotatably arranging the welding platform 1, it is convenient for personnel to weld the shaftway ladder top frame 5 from different angles.

[0039] In the embodiment of the present utility model, there are many ways to realize the flip installation of the welding platform 1. As Figure 1 shown in Figure 1 , this tooling can also include a frame 41, and a pivot mounting seat 43 rotatably mounted through a pivot shaft 42 is provided on the frame 41. By connecting the pivot mounting seat 43 with the welding platform 1, the flip function of the welding platform 1 can be realized.

[0040] As Figure 1 and Figure 2 As shown in Figure 2 , in the embodiment of the present utility model, the shaftway ladder top frame auxiliary welding tooling further includes a positioning and clamping mechanism arranged around the workpiece placement position K, and the positioning and clamping mechanism is used for three-axis positioning and clamping and fixing of the shaftway ladder top frame 5 placed on the workpiece placement position K. By providing the positioning and clamping mechanism, when the welding platform 1 flips, the shaftway ladder top frame 5 can be prevented from sliding or falling randomly within the workpiece placement position K.

[0041] Specifically, as Figure 1 and Figure 2As shown, in the embodiment of the present utility model, the positioning and clamping mechanism includes an X-axis clamping assembly 31 and a Y-axis clamping assembly 32. The X-axis clamping assembly 31 includes an X-axis reference block 311 and an X-axis pushing member 312 which are arranged on the welding platform 1 and are located on opposite sides of the workpiece placement position K in the first direction. The Y-axis clamping assembly 32 includes a Y-axis reference block 321 and a Y-axis pushing member 322 which are arranged on the welding platform 1 and are located on opposite sides of the workpiece placement position K in the second direction. By pushing the hoistway ladder top frame 5 in the direction of the X-axis reference block 311 with the X-axis pushing member 312, clamping and positioning of the hoistway ladder top frame in the X-axis direction can be achieved. By pushing the hoistway ladder top frame 5 in the direction of the Y-axis reference block 321 with the Y-axis pushing member 322, clamping and positioning of the hoistway ladder top frame in the Y-axis direction can be achieved.

[0042] As Figure 1 and Figure 2 shown, in the embodiment of the present utility model, the X-axis pushing member 312 and the Y-axis pushing member 322 can be threaded push rods, cams, electrically driven telescopic pushing members, etc. The electrically driven telescopic pushing members include cylinders, hydraulic cylinders, electric cylinders, etc.

[0043] As Figure 1 and Figure 2 shown, in the embodiment of the present utility model, the welding platform 1 includes a bottom platform body 11 and a first mounting seat 12, a second mounting seat 13, a third mounting seat 14, and a fourth mounting seat 15 arranged on the bottom platform body 11. The first mounting seat 12 and the second mounting seat 13 are arranged at intervals in the first direction. The third mounting seat 14 and the fourth mounting seat 15 are arranged at intervals in the second direction. The first mounting seat 12, the second mounting seat 13, the third mounting seat 14, and the fourth mounting seat 15 together enclose to form a workpiece placement position K. The X-axis reference block 311 and the X-axis pushing member 312 are respectively arranged on the first mounting seat 12 and the second mounting seat 13. The Y-axis reference block 321 and the Y-axis pushing member 322 are respectively arranged on the third mounting seat 14 and the fourth mounting seat 15. By arranging the first mounting seat 12, the second mounting seat 13, the third mounting seat 14, and the fourth mounting seat 15, it is convenient for the X-axis pushing member 312 and the Y-axis pushing member 322 to horizontally push the hoistway ladder top frame 5.

[0044] In the embodiment of the present utility model, at least one of the first mounting seat 12 and the second mounting seat 13 is detachably mounted on the bottom platform body 11, and the distance between the first mounting seat 12 and the second mounting seat 13 is adjustable. And / or at least one of the third mounting seat 14 and the fourth mounting seat 15 is detachably mounted on the bottom platform body 11, and the distance between the third mounting seat 14 and the fourth mounting seat 15 is adjustable.

[0045] Specifically, as Figure 1 and Figure 2As shown, in the embodiment of the present utility model, a plurality of groups of first adjustment hole groups 16 arranged at intervals in the first direction may be provided on the bottom platform body 11. Among them, the first adjustment hole group 16 may be located only on one side in the first direction of the workpiece placement position K, or the first adjustment hole group 16 may be provided on both opposite sides. A mating hole 17 for mating with one of the groups of first adjustment hole groups 16 is provided on the first mounting seat 12 and / or the second mounting seat 13. By selectively aligning and installing at least one of the first mounting seat 12 and the second mounting seat 13 with different groups of first adjustment hole groups 16 on the corresponding side, the adjustment of the distance between the first mounting seat 12 and the second mounting seat 13 can be realized. Thus, when the model size of the hoistway ladder top frame 5 changes, the clamping and positioning of the hoistway ladder top frame in the X-axis direction of this model can also be achieved. Similarly, the third mounting seat 14 and the fourth mounting seat 15 can also be adjusted in distance by means of detachable setting to be compatible with the clamping and positioning of hoistway ladder top frames 5 of different widths.

[0046] As Figure 1 and Figure 2 As shown, in the embodiment of the present utility model, the positioning and clamping mechanism further includes a third pressing assembly. The third pressing assembly includes a plurality of Z-axis fixed pressing members 33. The plurality of Z-axis fixed pressing members 33 are arranged on the first mounting seat 12 and the second mounting seat 13 in opposite directions, and / or the plurality of Z-axis fixed pressing members 33 are arranged on the third mounting seat 14 and the fourth mounting seat 15 in opposite directions. Through the plurality of Z-axis fixed pressing members 33, the pressing and fixing of the hoistway ladder top frame 5 along the Z-axis direction on both opposite sides can be realized, that is, this tooling realizes the three-axis clamping and positioning of the hoistway ladder top frame 5 through three groups of pressing assemblies.

[0047] As Figure 1 and Figure 2 As shown, in the embodiment of the present utility model, the first mounting seat 12 and the second mounting seat 13 may be respectively arranged at intervals from the edge of the bottom platform body 11 to reserve a space for installing electrical equipment. Of course, the third mounting seat 14 and the fourth mounting seat 15 may also be respectively arranged at intervals from the edge of the bottom platform body 11.

[0048] In summary, using the welding tooling of the present utility model can improve the welding efficiency by at least 25%, and the welding deformation amount of the top plate can be controlled within 8 mm, far exceeding the 15 mm specified by the industry standard, bringing huge improvements in working hours and quality benefits. At the same time, this tooling can be compatible with hoistway ladder top frames 5 of different sizes, broadening the usage scenarios, improving the utilization rate of the tooling, and enabling one set of tooling to be used for multiple models.

[0049] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0050] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0051] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0052] Although the embodiments of the present utility model have been described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A hoistway ladder top frame auxiliary welding tool, characterized in that: The auxiliary welding tooling of the hoistway ladder top frame (5) comprises: A welding platform (1) having a workpiece placement position (K); and The movable clamping mechanism (2) comprises a movable bracket (21) and a movable clamping member (22), wherein the movable bracket (21) is slidably arranged and at least partially extends above the workpiece placement position (K), and the movable clamping member (22) is arranged on the movable bracket (21) and located above the workpiece placement position (K), and the movable clamping member (22) is used to clamp the hoistway ladder top frame (5) on the workpiece placement position (K) along the Z-axis direction.

2. The auxiliary welding tool for the hoistway ladder top frame according to claim 1 is characterized in that: The welding platform (1) is provided with a sliding guide (18) extending along a first direction, the sliding guide (18) being located on the side of the workpiece placement position (K) in a second direction, the second direction being perpendicular to the first direction in a horizontal direction; The movable bracket (21) comprises a first bracket portion (211) slidably matched with the sliding guide member (18) and a second bracket portion (212) extending above the workpiece placement position (K), and the movable clamping member (22) is arranged on the second bracket portion (212).

3. The auxiliary welding tool for the hoistway ladder top frame according to claim 2 is characterized in that: The second bracket portion (212) spans the workpiece placement position (K) along the second direction, and the sliding guide members (18) are provided on both sides of the workpiece placement position (K) in the second direction. The first bracket portions (211) are provided at both ends of the second bracket portion (212), and the first bracket portions (211) at both ends are slidably matched with the sliding guide members (18) on the corresponding sides.

4. The auxiliary welding tool for the hoistway ladder top frame according to claim 2 is characterized in that: There are a plurality of movable pressing members (22), and the plurality of movable pressing members (22) are arranged on the second bracket portion (212) at intervals along the second direction.

5. The auxiliary welding tool for the hoistway ladder top frame according to claim 2 is characterized in that: There are a plurality of movable brackets (21), and the plurality of movable brackets (21) are sequentially arranged on the sliding guide member (18), and each sliding guide member (18) is provided with the movable pressing member (22).

6. The auxiliary welding tool for the hoistway ladder top frame according to any one of claims 1 to 5, characterized in that: The welding platform (1) can be turned over, and the shaft ladder top frame (5) auxiliary welding tool also includes a positioning clamping mechanism arranged around the workpiece placement position (K), and the positioning clamping mechanism is used to perform three-axis positioning and clamping on the shaft ladder top frame (5) placed on the workpiece placement position (K).

7. The auxiliary welding tool for the hoistway ladder top frame according to claim 6 is characterized in that: The positioning clamping mechanism comprises an X-axis clamping assembly (31) and a Y-axis clamping assembly (32); the X-axis clamping assembly (31) comprises an X-axis reference block (311) and an X-axis push piece (312) which are arranged on the welding platform (1) and are arranged on two opposite sides of a first direction of the workpiece placement position (K); and the Y-axis clamping assembly (32) comprises a Y-axis reference block (321) and a Y-axis push piece (322) which are arranged on the welding platform (1) and are arranged on two opposite sides of a second direction of the workpiece placement position (K).

8. The auxiliary welding tool for the hoistway ladder top frame according to claim 7 is characterized in that: The welding platform (1) comprises a bottom platform body (11) and a first mounting seat (12), a second mounting seat (13), a third mounting seat (14) and a fourth mounting seat (15) arranged on the bottom platform body (11); the first mounting seat (12) and the second mounting seat (13) are arranged at intervals along the first direction; the third mounting seat (14) and the fourth mounting seat (15) are arranged at intervals along the second direction; the first mounting seat (12), the second mounting seat (13), the third mounting seat (14) and the fourth mounting seat (15) are jointly arranged to form the workpiece placement position (K); the X-axis reference block (311) and the X-axis push member (312) are respectively arranged on the first mounting seat (12) and the second mounting seat (13); the Y-axis reference block (321) and the Y-axis push member (322) are respectively arranged on the third mounting seat (14) and the fourth mounting seat (15).

9. The auxiliary welding tool for the hoistway ladder top frame according to claim 8 is characterized in that: The bottom platform body (11) is provided with a plurality of groups of first adjustment hole groups (16) spaced apart along the first direction, and the first mounting seat (12) and / or the second mounting seat (13) are selectively detachably mounted with one of the groups of the first adjustment hole groups (16) on the corresponding side.

10. The auxiliary welding tool for the hoistway ladder top frame according to claim 8, characterized in that: The positioning clamping mechanism also includes a third clamping assembly, which includes a plurality of Z-axis fixed clamping members (33), wherein the plurality of Z-axis fixed clamping members (33) are arranged on the first mounting seat (12) and the second mounting seat (13) in relative directions, and / or the plurality of Z-axis fixed clamping members (33) are arranged on the third mounting seat (14) and the fourth mounting seat (15) in relative directions.

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