Positioning device used by truss arm middle section laser projection positioning system

Abstract

The utility model relates to a positioning device used by a truss arm middle section laser projection positioning system, which comprises a lining used for being inserted into a hinge point hole of a joint assembly; the round seat B is magnetically connected with the connector assembly through a magnetic block B; the connecting body is used for being inserted into the bushing; the extension rod is provided with a coding point; one side of the round seat A is connected with the shaft body, the other side of the round seat A is connected with the extension rod, and the round seat A is magnetically connected with the lining through a magnetic block A. The device is simple in design structure, light in weight design, easy to manufacture and store, universal, convenient to use and simple to operate. The device is matched with a laser projection positioning system for use, so that the scribing task can be accurately and efficiently completed, the product quality is improved, the labor intensity of workers is reduced, and the repair cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of laser projection positioning technology, and in particular to a positioning device used in a laser projection positioning system for intermediate sections of truss arms. Background Technology

[0002] The intermediate section of the truss boom is a key load-bearing structural component of the crawler crane, and its quantity determines the lifting height and radius of the product. The maximum length of the intermediate section of the truss boom exceeds 12 meters. It consists of the main structure and its auxiliary parts. The main structure is welded from a large number of seamless steel pipes and joint assemblies. The joint assemblies are equipped with hinge holes for the through-axis connection between intermediate sections of the truss boom or between intermediate sections of the truss boom and other booms. The diameter of the hinge holes increases with the tonnage of the product. The auxiliary parts are irregularly distributed and welded to the main structure, including small parts such as pull plate brackets, walkway plate mounting parts, ladder parts, shaft pull-out brackets, lifting lugs, and other small parts. A single intermediate section of the truss boom may have dozens of auxiliary parts.

[0003] There are two main typical production processes for truss arm intermediate sections:

[0004] (1) Process flow 1: Pipe assembly and splicing → Pipe welding → Fan assembly marking and splicing → Fan assembly welding → Machining (joint assembly) → Overall marking and splicing → Overall welding → Auxiliary parts marking and splicing → Auxiliary parts welding.

[0005] (2) Process flow 2: Pipe assembly and splicing → Pipe welding → Fan assembly marking and splicing → Fan assembly welding → Overall marking and splicing → Overall welding → Machining (joint assembly) → Auxiliary parts marking and splicing → Auxiliary parts welding.

[0006] The difference between the two production processes lies in whether the machining process occurs after the assembly welding process or after the overall welding process. The similarity is that the machining process is completed before the marking and assembly of the auxiliary parts. The traditional truss arm intermediate section production process uses manual marking for the auxiliary parts, making it difficult to effectively guarantee production quality. Furthermore, due to the large number of auxiliary parts in the truss arm intermediate section, the marking and assembly processes require a long time, affecting the product delivery cycle.

[0007] 3D laser projection technology reads the contour information of a digital model, forms a corresponding projection path, and emits a point light source that moves rapidly along the projection path to create the 3D contour of the workpiece. Its development and application can effectively solve the problems and shortcomings of traditional production processes and improve the automation level of manufacturing. Therefore, laser projection positioning systems are increasingly widely used in the manufacturing industry. However, due to the lack of highly accurate and flexible positioning devices, 3D laser projection technology has not yet been widely applied in the manufacturing process of truss arm intermediate sections.

[0008] The existing technology involves directly affixing the coding points to the appropriate positions on the workpiece of the truss arm intermediate section, using a laser projector to locate the coding point positions and align the projection file with the actual object, then projecting the workpiece position and contour information to be projected once, and completing the positioning of the small auxiliary parts of the truss arm intermediate section.

[0009] The existing technology allows for arbitrary placement of coding points, making them difficult to accurately identify in the product model. This results in poor projection accuracy of the workpiece to be assembled, affecting product quality.

[0010] In existing technology, the coding points are directly attached to the workpiece, which makes it difficult for the laser projector to recognize them. The laser projector position often needs to be adjusted multiple times to locate the coding point, which takes a long time and affects the production efficiency of the product.

[0011] In the production process of existing truss arm intermediate sections, dust and welding slag often accumulate on the surface, resulting in the coding points not being firmly adhered and easily falling off.

[0012] In existing technology, after the assembly of the auxiliary small parts of the intermediate section of the truss arm is completed, the coding point needs to be removed. Since the coding point is sometimes closely fitted, the removal time is relatively long.

[0013] Therefore, it is necessary to design a positioning device for the laser projection positioning system of the intermediate section of the truss arm to improve the problems in the existing technology. Utility Model Content

[0014] This utility model relates to a positioning device used in a laser projection positioning system for intermediate sections of truss booms. By setting coded points on the positioning device, it can be used for coordinate system alignment and dynamic tracking of the laser projection positioning system. It is applicable to the production of intermediate sections of truss booms for crawler cranes of various specifications and sizes, specifically replacing the marking process for auxiliary small parts of the intermediate sections of the truss boom, thus having a wide coverage. This device connects to the hinge point holes of the joint assembly, enabling precise positioning and projection of the laser projector's outline of the workpiece to be assembled during the use of the laser projection positioning system. This effectively improves production efficiency and product quality, reduces labor intensity for workers, and minimizes production costs caused by rework and repair.

[0015] To achieve the above-mentioned technical objectives, this utility model discloses a positioning device used in a laser projection positioning system for intermediate sections of truss arms, comprising:

[0016] Bushing, including:

[0017] The boss has an outer diameter that matches the diameter of the hinge point hole of the joint assembly of the truss arm intermediate section, and is used to insert into the hinge point hole of the joint assembly.

[0018] The circular base B has a through hole in the center, and the edges of the circular base B extend beyond the range of the connecting boss. The circular base B and the connector assembly are magnetically connected by the magnetic block B.

[0019] Connector, including:

[0020] The shaft body has an outer diameter that matches the central through hole of the round seat B, and is used to insert into the bushing;

[0021] An extension rod, on which coded points are provided;

[0022] Round seat A, the four edges of which extend beyond the connecting shaft, one side of round seat A is connected to the shaft, and the other side is connected to the extension rod. Round seat A and bushing are magnetically connected by magnetic block A.

[0023] Furthermore, the extension rod is provided with a groove, which has two layers. The upper groove is provided with a transparent protective sheet, and the lower groove is provided with a coding point.

[0024] Furthermore, the outer edge of the extension rod is provided with a groove that connects to the groove, and the groove depth is greater than that of the upper groove.

[0025] Furthermore, the four edges of the circular seat A extend beyond the connecting shaft, and two or more magnetic blocks A are arranged on the edges extending beyond the connecting shaft, evenly distributed around the center of the circular seat A.

[0026] Furthermore, the four edges of the circular base B extend beyond the range of the connecting boss, and two or more magnetic blocks B are arranged on the edges extending beyond the range of the connecting boss, evenly distributed around the center of the circular base B.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] First, the magnetic blocks on the bushing are used to attach to the connector assembly, and the magnetic blocks on the connector are used to attach to the bushing seat. The connector can also be rotated to adjust the angle according to the position of the laser projector in the laser projection positioning system, so as to prevent loose fit and falling off during use. It is convenient to install and disassemble, simple to operate, and ensures safety and reliability.

[0029] Secondly, the extension rod is equipped with a groove with two layers. The upper groove is equipped with a transparent protective sheet, and the lower groove is equipped with a coding point. The coding point is protected from damage or falling off during the production process.

[0030] Third, a groove is provided on the outer edge of the extension rod to connect to the groove. The groove is deeper than the upper groove so as to be used to lift the transparent protective sheet and replace the coding point.

[0031] Fourth, the outer diameter of the bushing boss is designed to adapt to changes in the joint hole diameter, while the inner diameter of the bushing boss and the connecting body assembly remain unchanged, reducing manufacturing costs. Only the bushing assembly needs to be replaced to be applicable to the production of intermediate sections of truss booms for multiple series of crawler cranes, making it versatile.

[0032] Fifth, the overall structure of this utility model is simple and lightweight, making it easy to manufacture and store. When used in conjunction with a laser projection positioning system, this device can accurately and efficiently complete the marking task, improve product quality, reduce the labor intensity of workers, and reduce rework costs. Attached Figure Description

[0033] Figure 1 This is a diagram showing the usage state of this utility model;

[0034] Figure 2 This is a three-dimensional structural diagram of the connector of this utility model;

[0035] Figure 3 This is a three-dimensional structural diagram of the bushing of this utility model.

[0036] Among them, 1 is the connector, 2 is the bushing, 3 is the joint assembly, 4 is the intermediate section of the truss arm, 5 is the positioning device used by the laser projection positioning system, 1-1 is the extension rod, 1-2 is the round seat A, 1-3 is the shaft, 1-4-1 is the upper groove, 1-4-2 is the lower groove, 1-5 is the slot, 1-6 is the magnetic block A, 2-1 is the round seat B, 2-2 is the boss, and 2-3 is the magnetic block B. Specific Implementation

[0037] like Figure 1 The positioning device 5 shown is used in a laser projection positioning system for a truss arm intermediate section. It connects to the holes on the machined joint assembly 3 of the truss arm intermediate section 4, enabling the laser projection positioning system to accurately position and project the outline of the workpiece to be assembled. The number of devices used is set according to requirements. The laser projector is used to locate the coded points, aligning the projection file with the actual object. Then, the position and outline information of the workpiece to be projected are projected once, completing the assembly point positioning of the auxiliary small parts of the truss arm intermediate section 4.

[0038] like Figure 2 and Figure 3 As shown, a positioning device used in a laser projection positioning system for a truss arm intermediate section includes:

[0039] Bushing, including:

[0040] Boss 2-2, the outer diameter of which matches the diameter of the hinge point hole of the joint assembly 3 of the truss arm intermediate section, is used to insert into the hinge point hole of the joint assembly 3;

[0041] The round seat B2-1 has a through hole in the center. The edges of the round seat B2-1 extend beyond the range of the connecting boss 2-2. The round seat B2-1 and the connector assembly 3 are magnetically connected by the magnetic block B2-3.

[0042] Connector 1 includes:

[0043] Shaft 1-3, the outer diameter of which matches the center through hole of round seat B2-1, is used to insert into the bushing;

[0044] Extension rod 1-1, on which coding points are provided;

[0045] The circular seat A1-2 extends beyond the connecting shaft on all four sides. One side of the circular seat A1-2 is connected to the shaft 1-3, and the other side is connected to the extension rod 1-1. The circular seat A1-2 and the bushing 2 are magnetically connected by a magnetic block A1-6.

[0046] The extension rod 1-1 has a groove with two layers. The upper groove 1-4-1 has a transparent protective sheet, and the lower groove 1-4-2 has a coded point attached to it. The outer edge of the extension rod 1-1 has three slots 1-5 that connect to the groove. The depth of the slots 1-5 is greater than that of the upper groove 1-4-1.

[0047] The four edges of the circular base A1-2 extend beyond the range of the connecting shaft. Four magnetic blocks A1-6 are set on the edges that extend beyond the range of the connecting shaft 1-3, and are evenly distributed around the center of the circular base A1-2.

[0048] The four edges of the circular base B2-1 extend beyond the range of the connecting boss 2-2. Four magnetic blocks B2-3 are set on the edges that extend beyond the range of the connecting boss 2-2, and are evenly distributed around the center of the circular base B2-1.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solution of the present utility model without departing from the design principle of the present utility model should be included within the protection scope defined by the claims of the present utility model.

Claims

1. A positioning device used in a laser projection positioning system for a truss arm intermediate section, characterized in that, include: Bushing, including: The boss (2-2) has an outer diameter that matches the diameter of the hinge hole of the joint assembly (3) of the intermediate section of the truss arm, and is used to insert into the hinge hole of the joint assembly (3); The circular seat B (2-1) has a through hole in the center. The edges of the circular seat B (2-1) extend beyond the range of the connecting boss (2-2). The circular seat B (2-1) and the connector assembly (3) are magnetically connected by the magnetic block B (2-3). Connector (1), comprising: The outer diameter of the shaft (1-3) matches the central through hole of the round seat B (2-1) for insertion into the bushing; Extension rod (1-1), on which coding points are provided; Round seat A (1-2), the four edges of round seat A (1-2) extend beyond the connecting shaft. One side of round seat A (1-2) is connected to shaft (1-3), and the other side is connected to extension rod (1-1). Round seat A (1-2) and bushing (2) are magnetically connected by magnetic block A (1-6).

2. The positioning device used in the laser projection positioning system for the intermediate section of a truss arm according to claim 1, characterized in that, The extension rod (1-1) is provided with a groove, which has two layers. The upper groove (1-4-1) is provided with a transparent protective sheet, and the lower groove (1-4-2) is provided with a coding point.

3. The positioning device used in the laser projection positioning system for the intermediate section of a truss arm according to claim 2, characterized in that, The outer edge of the extension rod (1-1) is provided with a groove (1-5) connecting to the groove, and the depth of the groove (1-5) is greater than that of the upper groove (1-4-1).

4. The positioning device used in the laser projection positioning system for the intermediate section of a truss arm according to claim 1, characterized in that, The four edges of the circular seat A (1-2) extend beyond the range of the connecting shaft. Two or more magnetic blocks A (1-6) are set on the edges that extend beyond the range of the connecting shaft (1-3), and are evenly distributed around the center of the circular seat A (1-2) along the edge of the circular seat A (1-2).

5. The positioning device used in the laser projection positioning system for the intermediate section of a truss arm according to claim 1, characterized in that, The four edges of the circular seat B (2-1) extend beyond the range of the connecting boss (2-2). Two or more magnetic blocks B (2-3) are set on the edges that extend beyond the range of the connecting boss (2-2), and are evenly distributed around the center of the circular seat B (2-1) along the edge of the circular seat B (2-1).

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