Light pipe truss welding auxiliary positioning device and using method thereof

Abstract

The invention discloses a light pipe truss welding auxiliary positioning device and a using method thereof, and relates to the technical field of welding auxiliary structures, the light pipe truss welding auxiliary positioning device comprises a base unit, a vertical rod unit, a vertical rod limiting assembly arranged on a base, a vertical rod arranged on the vertical rod limiting assembly and a supporting rod limiting assembly arranged on the vertical rod; and the supporting unit comprises a supporting rod assembly arranged on the supporting rod limiting assembly, a positioning rod assembly arranged on the supporting rod assembly and a rotating reset assembly arranged on the positioning rod assembly. According to the light pipe truss welding auxiliary positioning device, the multiple sets of vertical rod units are arranged on the base, and the multiple sets of supporting units are arranged on the vertical rod units, so that a three-dimensional light pipe truss welding auxiliary structure is formed, workers are helped to position parts of pipelines or trusses to correct positions, welding is facilitated, and the welding efficiency is improved. By arranging the supporting rods and the positioning rods, it is ensured that all parts of the pipeline or the truss are accurately aligned.

Description

Technical Field

[0001] The invention relates to the technical field of welding auxiliary equipment, and in particular to a light pipe truss welding auxiliary positioning device and a use method thereof. Background Art

[0002] Lightweight pipe truss is a truss system used to support and carry light equipment, pipes or other structures, usually composed of light metal pipes and connectors. This truss structure is commonly found in buildings, industrial facilities, exhibition halls and other occasions.

[0003] In order to ensure the stability, durability and adaptability of the lightweight tube truss structure and enable the lightweight tube truss to play a role in various environments and applications, the lightweight tube truss needs to be welded and connected. When welding lightweight pipes or truss structures, workers must not only ensure the relative stability between multiple groups of tube trusses to be connected, but also ensure the connection point accuracy between multiple groups of tube trusses to be connected. Otherwise, the welding connection accuracy of the overall tube truss is low, which is easy to produce scrapped tube trusses. Summary of the invention

[0004] In view of the problems existing in the above-mentioned existing light pipe truss welding auxiliary positioning device, the present invention is proposed.

[0005] Therefore, the present invention provides a lightweight pipe truss welding auxiliary positioning device, the purpose of which is to solve the technical problem that when welding lightweight pipes or truss structures, the workers must not only ensure the relative stability between multiple groups of pipe trusses to be connected, but also ensure the connection point accuracy between the multiple groups of pipe trusses to be connected. Otherwise, the welding connection accuracy of the overall pipe truss is low, which easily leads to the generation of scrapped pipe trusses.

[0006] To solve the above technical problems, in a first embodiment of the present invention, the present invention provides the following technical solution: a lightweight tube truss welding auxiliary positioning device, comprising a base unit, a vertical pole unit, and a support unit.

[0007] Among them, the base unit includes a base, on which a Z-axis direction scale line is arranged; the upright pole unit includes an upright pole limiting assembly arranged on the base, an upright pole arranged on the upright pole limiting assembly, and a support rod limiting assembly arranged on the upright pole; and the support unit includes a support rod assembly arranged on the support rod limiting assembly, a positioning rod assembly arranged on the support rod assembly, and a rotation reset assembly arranged on the positioning rod assembly.

[0008] As a preferred solution of the lightweight tube truss welding auxiliary positioning device described in the present invention, the vertical pole limiting assembly includes a vertical pole mounting rod arranged on the base, a limiting seat arranged on the vertical pole mounting rod and connected to the base, and a Z-axis scale indicator arranged on the limiting seat.

[0009] As a preferred solution of the lightweight tube truss welding auxiliary positioning device described in the present invention, the vertical pole is arranged on the vertical pole mounting rod, a guide groove is arranged on the vertical pole, a reinforcing rod is arranged between the vertical pole and the vertical pole mounting rod, and a Y-axis direction scale line is arranged on the vertical pole.

[0010] As a preferred solution of the lightweight pipe truss welding auxiliary positioning device of the present invention, the support rod limiting assembly includes a support rod guide seat arranged on the vertical rod and slidably connected to the support rod assembly, a guide block connecting rod arranged on the support rod guide seat, and a guide block arranged on the guide block connecting rod and slidably arranged on the guide groove;

[0011] A locking knob is arranged on the support rod guide seat.

[0012] As a preferred solution of the lightweight tube truss welding auxiliary positioning device described in the present invention, wherein: the vertical poles are provided with two groups relative to each group of the vertical pole limiting assemblies, the support rod assemblies are provided on the two groups of the vertical poles, and two groups are provided relative to each group of the vertical pole limiting assemblies.

[0013] As a preferred solution of the light-weight pipe truss welding auxiliary positioning device of the present invention, wherein: the support rod assembly comprises a support rod arranged on the support rod limiting assembly, a rack arranged on the support rod, an X-direction scale line arranged on the support rod, and a connecting portion arranged at the ends of two groups of the support rods;

[0014] The connecting part includes a connecting seat 1 matched with the support rod, a connecting seat 2 matched with the support rod, and connecting bolts arranged on the connecting seat 1 and the connecting seat 2;

[0015] In two adjacent groups of support rods, one group of support rods is provided with docking pins, and the other group of support rods is provided with docking grooves.

[0016] As a preferred solution of the lightweight tube truss welding auxiliary positioning device described in the present invention, the positioning rod assembly includes an adjustment seat slidably arranged on the support rod, a rotating table rotatably arranged on the adjustment seat, a positioning rod arranged on the rotating table, and a gear part arranged on the adjustment seat and meshingly connected to the rack.

[0017] As a preferred solution of the lightweight tube truss welding auxiliary positioning device described in the present invention, the rotation reset assembly includes a guide rod mounting seat arranged on the adjustment seat, a guide rod arranged on the guide rod mounting seat, a steering connecting seat arranged on the rotating table and slidably connected to the guide rod, and a reset spring slidably arranged on the guide rod and located between the steering connecting seat and the guide rod mounting seat.

[0018] As a preferred solution of the lightweight pipe truss welding auxiliary positioning device of the present invention, wherein: the base is provided with supporting feet.

[0019] In a second embodiment of the present invention, a method for using a lightweight pipe truss welding auxiliary positioning device is provided, comprising:

[0020] Positioning of the base unit, stably setting the base unit on the welding work surface of the pipe truss, and using the support frame to improve the stability between the base unit and the welding work surface of the pipe truss;

[0021] The adjustment of the vertical pole, the limit seat slides on the base, thereby driving the vertical pole mounting rod and the vertical pole to slide relative to the base, and the Z-axis scale indicator points to the Z-axis direction scale line;

[0022] The support rod assembly is debugged, the support rod is slidably arranged on the support rod limit assembly, and before placing the pipe truss, the two groups of support rods on the vertical poles located on the same plane are separated from each other to facilitate the placement of the pipe truss;

[0023] The placement of the tube truss is to place the tube truss on the base, and according to the welding connection relationship of the tube truss, the positions of the vertical poles and the support rods on different planes are adjusted in sequence, the support rods are slidably arranged on the vertical poles in the Y-axis direction, and the support rods point to the scale line in the Y-axis direction, and the local lightweight tube truss is positioned by using the positioning rod assembly on the support rod, and the positioning rod assembly points to the scale line in the X-axis direction;

[0024] The positioning rod assembly performs high-precision positioning of the pipe truss, and utilizes the meshing connection between the gear portion and the rack to drive the adjustment seat to slide on the support rod, thereby performing high-precision positioning of the pipe truss located at different positions of the support rod;

[0025] The positioning rod assembly is debugged, and the static balance state of the return spring maintains the positioning rod at the initial position. When the tube truss approaches the positioning rod, the tube truss abuts against the positioning rod, causing the positioning rod and the rotating table to shift, thereby increasing the contact area between the positioning rod and the tube truss.

[0026] The beneficial effects of the present invention are as follows: by arranging multiple groups of vertical pole units on the base, and arranging multiple groups of support units on the vertical pole units, a three-dimensional lightweight pipe truss welding auxiliary structure is formed, which helps workers to position the components of the pipe or truss to the correct position for welding, and by arranging support rods and positioning rods, it is ensured that the various components of the pipe or truss are accurately aligned, so as to maintain the accuracy and strength of the structure during the welding process, and by adding a displacement servo structure, the degree of automation of positioning is improved, and by arranging structures such as displacement sensors, the dynamic recording of the relative positions of the positioning rods, support rods and vertical poles' three-dimensional positioning data is realized, and the three-dimensional simulation restoration of the pipe truss welding work is realized, which is convenient for workers to design and plan high-strength pipe trusses. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a structural schematic diagram of the light-weight pipe truss welding auxiliary positioning device of the present invention in a working state.

[0029] Figure 2 It is a structural schematic diagram of the lightweight pipe truss welding auxiliary positioning device of the present invention.

[0030] Figure 3 The structure of the vertical rod unit of the light-weight pipe truss welding auxiliary positioning device of the present invention is shown in FIG. Figure 1 .

[0031] Figure 4 It is a schematic structural diagram of a support unit of a lightweight pipe truss welding auxiliary positioning device of the present invention.

[0032] Figure 5 The structure of the vertical rod unit of the light-weight pipe truss welding auxiliary positioning device of the present invention is shown in FIG. Figure 2 .

[0033] Figure 6 for Figure 4 A partial enlarged view of point A in the middle.

[0034] Figure 7 for Figure 4 A partial enlarged view of point B in the middle.

[0035] Figure 8 The structure of the positioning rod unit of the auxiliary positioning device for welding of light pipe truss of the present invention is shown in FIG. Figure 1 .

[0036] Fig. 9It is an exploded view of the positioning rod unit of the lightweight pipe truss welding auxiliary positioning device of the present invention.

[0037] Fig.10 The structure of the positioning rod unit of the auxiliary positioning device for welding of light pipe truss of the present invention is shown in FIG. Figure 2 .

[0038] Fig.11 It is a cross-sectional view of a support rod unit of the lightweight pipe truss welding auxiliary positioning device of the present invention. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0042] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0043] Example 1, reference Figure 1-Figure 7 , which is the first embodiment of the present invention, provides a lightweight pipe truss welding auxiliary positioning device, including a base unit 100, a vertical pole unit 200, and a support unit 300.

[0044] The base unit 100 includes a base 101, and a Z-axis direction scale line 102 is arranged on the base 101. The base unit 100 is stably arranged on the welding work surface of the tube truss 400, and the Z-axis direction scale line 102 arranged on the base 101 cooperates with the upright unit 200, so as to facilitate the identification and recording of the welding positioning data of the tube truss 400 in the Z-axis direction.

[0045] The pole unit 200 includes a pole limiting assembly 201 disposed on the base 101, a pole 202 disposed on the pole limiting assembly 201, and a support rod limiting assembly 203 disposed on the pole 202. The pole limiting assembly 201 is provided to limit and fix the sliding of the pole 202 on the base 101, and the support rod limiting assembly 203 is provided to facilitate the setting of the support unit 300 on the pole 202 and the fixing of the support unit 300 on the pole 202.

[0046] The support unit 300 includes a support rod assembly 301 disposed on the support rod limiting assembly 203 , a positioning rod assembly 302 disposed on the support rod assembly 301 , and a rotation reset assembly 303 disposed on the positioning rod assembly 302 .

[0047] Furthermore, the vertical pole limiting assembly 201 includes a vertical pole mounting rod 201a disposed on the base 101, a limiting seat 201b disposed on the vertical pole mounting rod 201a and connected to the base 101, and a Z-axis scale indicator 201c disposed on the limiting seat 201b.

[0048] Furthermore, the vertical pole 202 is arranged on the vertical pole mounting rod 201a, a guide groove 202a is arranged on the vertical pole 202, a reinforcing rod 202b is arranged between the vertical pole 202 and the vertical pole mounting rod 201a, and a Y-axis direction scale line 202c is arranged on the vertical pole 202. The guide groove 202a is arranged to facilitate the sliding of the support rod limit assembly 203 relative to the vertical pole 202 in the Y-axis direction, and the reinforcing rod 202b is arranged to improve the connection strength between the vertical pole 202 and the vertical pole mounting rod 201a, thereby improving the positioning stability of the pipe truss 400.

[0049] Furthermore, the support rod limiting assembly 203 includes a support rod guide seat 203a arranged on the vertical pole 202 and slidably connected to the support rod assembly 301, a guide block connecting rod 203b arranged on the support rod guide seat 203a, and a guide block 203c arranged on the guide block connecting rod 203b and slidably arranged on the guide groove 202a; the support rod guide seat 203a is provided to facilitate guiding the sliding of the support rod 301a relative to the vertical pole 202, and a locking knob 203a-1 is provided on the support rod guide seat 203a. When the support rod 301a is set to a corresponding position relative to the vertical pole 202 for facilitating the placement of the pipe truss 400, the locking knob 203a-1 is used to lock the vertical pole 202.

[0050] Furthermore, two groups of vertical poles 202 are arranged relative to each group of vertical pole limiting assemblies 201, and support rod assemblies 301 are arranged on the two groups of vertical poles 202, and two groups are arranged relative to each group of vertical pole limiting assemblies 201. Before placing the tube truss 400, the two groups of support rod assemblies 301 on the vertical poles 202 located on the same plane are separated from each other to facilitate the placement of the tube truss 400.

[0051] During use, first position the base unit 100 and stably set the base unit 100 on the welding work surface of the tube truss 400; then debug the upright pole 202, use the upright pole limit assembly 201 to drive the upright pole 202 to slide relative to the base 101, and the Z-axis scale indicator 201c points to the Z-axis direction scale line 102, and set the corresponding Z-axis displacement data sensor on the upright pole limit assembly 201 to realize the Z-axis data parameter recording of the overall structure of the tube truss; then debug the support rod assembly 301, and before placing the tube truss 400, separate the two groups of support rod assemblies 301 on the upright pole 202 located on the same plane from each other to facilitate the placement of the tube truss 400; then place the tube truss 400 to be welded, The various pipeline trusses to be welded of the tube truss 400 are placed on the base 101 in sequence, and according to the welding connection relationship of the tube truss 400, the positions of the vertical poles 202 and the support rod assembly 301 on different planes are adjusted in sequence, the support rod assembly 301 is slidably set on the vertical pole 202 in the Y-axis direction, and a corresponding Y-axis displacement data sensor is set on the support rod assembly 301 to realize the Y-axis data parameter recording of the overall structure of the tube truss, and the positioning rod assembly 302 on the support rod assembly 301 is used to position the local lightweight tube truss 400, the positioning rod assembly 302 points to the X-axis direction scale line 301c, and a corresponding X-axis displacement data sensor is set on the positioning rod assembly 302 to realize the X-axis data parameter recording of the overall structure of the tube truss.

[0052] Example 2, reference Figure 1-Figure 11 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the support rod assembly 301 includes a support rod 301a provided on the support rod limiting assembly 203, a rack 301b provided on the support rod 301a, an X-axis direction scale line 301c provided on the support rod 301a, and a connecting portion 301d provided at the ends of the two groups of support rods 301a;

[0053] Compared with Example 1, further, the connecting portion 301d includes a connecting seat 1 301d-1 that cooperates with the support rod 301a, a connecting seat 2 301d-2 that cooperates with the support rod 301a, and a connecting bolt 301d-3 arranged on the connecting seat 1 301d-1 and the connecting seat 2 301d-2. The connecting bolt 301d-3 is used to lock the connecting seat 1 301d-1 and the connecting seat 2 301d-2, thereby realizing a reinforced connection between the two groups of support rods 301a, thereby improving the positioning stability of the pipe truss 400.

[0054] Preferably, among two adjacent groups of support rods 301a, one group of support rods 301a is provided with docking pins 301a-1, and the other group of support rods 301a is provided with docking grooves 301a-2, so as to facilitate the staff to position and separate the two groups of support rods 301a.

[0055] Furthermore, the positioning rod assembly 302 includes an adjustment seat 302c slidably disposed on the support rod 301a, a rotating platform 302b rotatably disposed on the adjustment seat 302c, a positioning rod 302a disposed on the rotating platform 302b, and a gear portion 302d disposed on the adjustment seat 302c and meshingly connected with the rack 301b. The gear portion 302d and the rack 301b are provided to achieve high-precision positioning of the pipe truss 400 by the positioning rod assembly 302. The meshing connection between the gear portion 302d and the rack 301b drives the adjustment seat 302c to slide on the support rod 301a, and the positioning rod assembly 302 moves automatically relative to the support rod 301a, thereby performing high-precision positioning of the pipe truss 400 located at different positions of the support rod 301a, and at the same time improving the degree of automation of positioning the pipe truss 400. The rotating table 302b is provided with a rotating table scale indicator 302b-1 for indicating the X-axis scale line 301c on the support rod 301a. The positioning rod 302a is provided with a positioning rod locking member 302b-2 for locking and fixing the positions of the positioning rod 302a and the rotating table 302b relative to the adjustment seat 302c, so as to fix the positioning rod 302a when the positioning rod 302a does not need to rotate relative to the adjustment seat 302c.

[0056] Furthermore, the rotation reset assembly 303 includes a guide rod mounting seat 303a arranged on the adjustment seat 302c, a guide rod 303b arranged on the guide rod mounting seat 303a, a steering connecting seat 303c arranged on the rotating table 302b and slidably connected to the guide rod 303b, and a reset spring 303d slidably arranged on the guide rod 303b and located between the steering connecting seat 303c and the guide rod mounting seat 303a. The static equilibrium state of the reset spring 303d maintains the positioning rod 302a at the initial position. When the tube truss 400 approaches the positioning rod 302a, the tube truss 400 abuts against the positioning rod 302a, causing the positioning rod 302a and the rotating table 302b to offset, thereby increasing the contact area between the positioning rod 302a and the tube truss 400.

[0057] Furthermore, the base 101 is provided with supporting feet 101a. The four feet of the base part of the supporting feet 101a are subjected to too concentrated force. The base can be eliminated or enlarged feet can be added to the base to increase the force-bearing area.

[0058] The remaining structures are the same as those of Example 1.

[0059] Example 3, reference Figure 1-Figure 11 , which is the third embodiment of the present invention, is based on the first and second embodiments and provides a method for using a lightweight pipe truss welding auxiliary positioning device.

[0060] The method includes: positioning the base unit 100, stably setting the base unit 100 on the welding work surface of the pipe truss 400, and using the support frame 101a to improve the stability between the base unit 100 and the welding work surface of the pipe truss 400;

[0061] The vertical pole 202 is debugged, and the limit seat 201b slides on the base 101, thereby driving the vertical pole mounting rod 201a and the vertical pole 202 to slide relative to the base 101, and the Z-axis scale indicator 201c points to the Z-axis direction scale line 102;

[0062] Debugging of the support rod assembly 301, the support rod 301a is slidably set on the support rod limit assembly 203, and before placing the tube truss 400, the two groups of support rods 301a on the vertical rods 202 located on the same plane are separated from each other to facilitate the placement of the tube truss 400;

[0063] The tube truss 400 is placed on the base 101, and the positions of the vertical poles 202 and the support rods 301a on different planes are adjusted in sequence according to the welding connection relationship of the tube truss 400. The support rods 301a are slidably arranged on the vertical poles 202 in the Y-axis direction, and the support rods 301a point to the scale line 202c in the Y-axis direction. The local lightweight tube truss 400 is positioned by using the positioning rod assembly 302 on the support rod 301a, and the positioning rod assembly 302 points to the scale line 301c in the X-axis direction;

[0064] The positioning rod assembly 302 can position the pipe truss 400 with high precision. The meshing connection between the gear part 302d and the rack 301b is used to drive the adjustment seat 302c to slide on the support rod 301a, thereby positioning the pipe truss 400 at different positions of the support rod 301a with high precision.

[0065] The positioning rod assembly 302 is debugged, and the static equilibrium state of the return spring 303d maintains the positioning rod 302a at the initial position. When the tube truss 400 approaches the positioning rod 302a, the tube truss 400 abuts against the positioning rod 302a, causing the positioning rod 302a and the rotating table 302b to shift, thereby increasing the contact area between the positioning rod 302a and the tube truss 400.

[0066] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0067] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A lightweight pipe truss welding auxiliary positioning device, characterized in that: include, A base unit (100) comprises a base (101), wherein the base (101) is provided with a Z-axis direction scale line (102); The pole unit (200) comprises a pole limiting assembly (201) arranged on the base (101), a pole (202) arranged on the pole limiting assembly (201), and a support rod limiting assembly (203) arranged on the pole (202); and, The support unit (300) comprises a support rod assembly (301) arranged on the support rod limiting assembly (203), a positioning rod assembly (302) arranged on the support rod assembly (301), and a rotation reset assembly (303) arranged on the positioning rod assembly (302).

2. The light-weight pipe truss welding auxiliary positioning device according to claim 1 is characterized in that: The vertical pole limiting assembly (201) comprises a vertical pole mounting rod (201a) arranged on the base (101), a limiting seat (201b) arranged on the vertical pole mounting rod (201a) and connected to the base (101), and a Z-axis scale indicator (201c) arranged on the limiting seat (201b).

3. The light-weight pipe truss welding auxiliary positioning device according to claim 2 is characterized in that: The vertical pole (202) is arranged on the vertical pole mounting rod (201a), a guide groove (202a) is arranged on the vertical pole (202), a reinforcing rod (202b) is arranged between the vertical pole (202) and the vertical pole mounting rod (201a), and a Y-axis direction scale line (202c) is arranged on the vertical pole (202).

4. The light-weight pipe truss welding auxiliary positioning device according to claim 3 is characterized in that: The support rod limiting assembly (203) comprises a support rod guide seat (203a) arranged on the vertical rod (202) and slidably connected to the support rod assembly (301), a guide block connecting rod (203b) arranged on the support rod guide seat (203a), and a guide block (203c) arranged on the guide block connecting rod (203b) and slidably arranged on the guide groove (202a); The support rod guide seat (203a) is provided with a locking knob (203a-1).

5. The light-weight pipe truss welding auxiliary positioning device according to claim 4 is characterized in that: Two groups of the vertical poles (202) are provided relative to each group of the vertical pole limiting assemblies (201); the support rod assemblies (301) are provided on the two groups of the vertical poles (202), and two groups are provided relative to each group of the vertical pole limiting assemblies (201).

6. The light-weight pipe truss welding auxiliary positioning device according to claim 5 is characterized in that: The support rod assembly (301) comprises a support rod (301a) arranged on the support rod limiting assembly (203), a rack (301b) arranged on the support rod (301a), an X-axis direction scale line (301c) arranged on the support rod (301a), and a connecting portion (301d) arranged at the ends of two groups of the support rods (301a); The connecting portion (301d) comprises a connecting seat 1 (301d-1) matched with the support rod (301a), a connecting seat 2 (301d-2) matched with the support rod (301a), and connecting bolts (301d-3) arranged on the connecting seat 1 (301d-1) and the connecting seat 2 (301d-2); In two adjacent groups of support rods (301a), one group of support rods (301a) is provided with a docking pin (301a-1), and the other group of support rods (301a) is provided with a docking groove (301a-2).

7. The light-weight pipe truss welding auxiliary positioning device according to claim 6 is characterized in that: The positioning rod assembly (302) comprises an adjustment seat (302c) slidably arranged on the support rod (301a), a rotating table (302b) rotatably arranged on the adjustment seat (302c), a positioning rod (302a) arranged on the rotating table (302b), and a gear part (302d) arranged on the adjustment seat (302c) and meshingly connected with the rack (301b).

8. The light-weight pipe truss welding auxiliary positioning device according to claim 7 is characterized in that: The rotation reset assembly (303) comprises a guide rod mounting seat (303a) arranged on the adjustment seat (302c), a guide rod (303b) arranged on the guide rod mounting seat (303a), a steering connection seat (303c) arranged on the rotating platform (302b) and slidably connected to the guide rod (303b), and a reset spring (303d) slidably arranged on the guide rod (303b) and located between the steering connection seat (303c) and the guide rod mounting seat (303a).

9. The light-weight pipe truss welding auxiliary positioning device according to claim 8, characterized in that: The base (101) is provided with supporting feet (101a).

10. A method for using the light-weight pipe truss welding auxiliary positioning device according to claim 9, characterized in that: The following steps are included: Positioning the base unit (100), stably arranging the base unit (100) on the welding work surface of the pipe truss (400); The vertical pole (202) is debugged, the limiting seat (201b) slides on the base (101), thereby driving the vertical pole mounting rod (201a) and the vertical pole (202) to slide relative to the base (101), and the Z-axis scale indicator (201c) points to the Z-axis direction scale line (102); The support rod assembly (301) is debugged, the support rod (301a) is slidably arranged on the support rod limiting assembly (203), and before placing the tube truss (400), two groups of the support rods (301a) on the vertical rods (202) located on the same plane are separated from each other to facilitate the placement of the tube truss (400); Placing the tube truss (400), placing the tube truss (400) on the base (101), and adjusting the positions of the vertical poles (202) and the support poles (301a) on different planes in sequence according to the welding connection relationship of the tube truss (400), wherein the support poles (301a) are slidably arranged on the vertical poles (202) in the Y-axis direction, and the support poles (301a) point to the Y-axis direction scale line (202c), and the local lightweight tube truss (400) is positioned by using the positioning rod assembly (302) on the support pole (301a), and the positioning rod assembly (302) points to the X-axis direction scale line (301c); The positioning rod assembly (302) performs high-precision positioning of the tube truss (400), and utilizes the meshing connection between the gear portion (302d) and the rack (301b) to drive the adjustment seat (302c) to slide on the support rod (301a), thereby performing high-precision positioning of the tube truss (400) located at different positions of the support rod (301a); The positioning rod assembly (302) is debugged, and the static equilibrium state of the return spring (303d) maintains the positioning rod (302a) at the initial position. When the tube truss (400) approaches the positioning rod (302a), the tube truss (400) abuts against the positioning rod (302a), causing the positioning rod (302a) and the rotating table (302b) to deviate, thereby increasing the contact area between the positioning rod (302a) and the tube truss (400).

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