Laser cladding system for shield machine scraper

Abstract

The present invention discloses a laser cladding system for a shield machine scraper, the laser cladding system for the shield machine scraper comprises a cladding component and a fixing component, the cladding component comprises a laser cladding device and a six-axis robot, the laser cladding device is connected to the six-axis robot, the fixing component comprises a base and a mounting seat, the mounting seat is connected to the base, the mounting seat has a plurality of moving parts, the moving parts are movable along the radial direction of the mounting seat, the moving parts are provided with fixings, and the plurality of fixings are respectively inserted into the bolt holes of the shield machine scraper. The laser cladding system for the shield machine scraper of the present invention utilizes a six-axis robot equipped with a laser cladding device to perform automated laser cladding of wear-resistant materials on the shield machine scraper, avoiding the disadvantages of low efficiency, high cost, and uncontrollable welding quality caused by the related art that the wear resistance of the scraper can only be improved by artificial surfacing of wear-resistant materials and welding of wear-resistant alloy blocks.

Description

Technical Field

[0001] The invention relates to the technical field of shield construction, and in particular to a laser cladding system for a shield machine scraper. Background Art

[0002] The scraper is an important tool on the cutterhead of the shield machine and is widely used in various soft soil shields. When the shield machine is excavating, the scraper will be squeezed and rubbed with the soil or rock for a long time. Therefore, there are problems of easy wear and high consumption during use. Improving the wear resistance of the shield machine scraper is one of the important tasks in the production of the shield machine. In the related technology, the means to improve the wear resistance of the shield machine scraper are mainly through artificial surfacing of wear-resistant materials and welding of wear-resistant alloy blocks, etc., which have the disadvantages of low production efficiency, large labor input, uncontrollable welding quality, and limited arrangement of wear-resistant materials. This welding method has relatively high cost and relatively poor effect. It may even require frequent shutdown and replacement due to frequent wear of the scraper, which will delay the construction period and cause greater losses. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a laser cladding system for a shield machine scraper to solve the technical problems of low efficiency, high cost and uncontrollable welding quality of the related art welding method.

[0005] The laser cladding system of the shield machine scraper according to the embodiment of the present invention comprises:

[0006] A cladding assembly, the cladding assembly comprising a laser cladding device and an adjusting device, the adjusting device having a supporting portion and a disassembling portion at its end and a plurality of adjusting portions located between the supporting portion and the disassembling portion, the adjusting portion being rotatable, and the laser cladding device being connected to the disassembling portion;

[0007] A fixing component, which is located on one side of the cladding component. The fixing component includes a base and a mounting seat, which is connected to the base. The mounting seat is cylindrical and arranged in a horizontal direction. The mounting seat has a plurality of movable parts, and the plurality of movable parts are spaced around the central axis of the mounting seat. The movable part is movable along the radial direction of the mounting seat. A fixing part is provided on the movable part, and the plurality of fixing parts are respectively inserted into the bolt holes of the shield machine scraper, and the area to be operated of the shield machine scraper faces the laser cladding device.

[0008] The laser cladding system for the shield machine scraper of the embodiment of the present invention utilizes a six-axis robot equipped with a laser cladding device to perform automated laser cladding of wear-resistant materials on the shield machine scraper, thereby avoiding the disadvantages of low efficiency, high cost, and uncontrollable welding quality that the related technology can only rely on manually surfacing wear-resistant materials and welding wear-resistant alloy blocks to improve the wear resistance of the scraper.

[0009] In some embodiments, the adjustment device is a six-axis robot.

[0010] In some embodiments, the fixing assembly further includes a fixing bracket, the mounting seat is connected to the base via the fixing bracket, and the mounting seat is rotatable on the fixing bracket.

[0011] In some embodiments, the fixed bracket includes two vertical plates and a plurality of connecting rods, the two vertical plates are spaced apart in the horizontal direction, and the two vertical plates are connected by the plurality of connecting rods.

[0012] In some embodiments, a main shaft is provided between the two vertical plates, the main shaft is rotatably connected to the vertical plates, and the mounting seat is connected to one end of the main shaft.

[0013] In some embodiments, a motor is provided at the other end of the main shaft, and the motor is fixed on one side of the vertical plate.

[0014] In some embodiments, the angle between two adjacent moving parts on the mounting base is 60°, 90°, 120° or 180°.

[0015] In some embodiments, a driving member is provided in the mounting seat, and the driving member is connected to the plurality of moving parts to drive the plurality of moving parts to move closer to or away from each other.

[0016] In some embodiments, the fixing member is a steel rod, and the axial direction of the fixing member is parallel to the axial direction of the mounting seat.

[0017] In some embodiments, a threaded hole is provided on the movable portion, and an external thread that fits in the threaded hole is provided on the peripheral wall of the fixing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a laser cladding system for a shield machine scraper according to an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of a cladding assembly of a shield machine scraper according to an embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of a fixing assembly of a shield machine scraper according to an embodiment of the present invention.

[0021] Figure 4 It is a front view of the scraper.

[0022] Figure 5 is a side view of the scraper.

[0023] Reference numerals:

[0024] 100-scraper, 200-bolt hole, 300-cladding part,

[0025] 1- cladding component, 11- laser cladding device, 12- adjustment device,

[0026] 2-fixed component, 21-base, 22-mounting seat, 221-moving part, 222-fixed part, 23-fixed bracket, 24-spindle, 25-motor. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] The laser cladding system for a shield machine scraper according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0029] like Figures 1 to 5 As shown, the laser cladding system for a shield machine scraper according to an embodiment of the present invention comprises: a cladding component 1 and a fixing component 2.

[0030] The cladding assembly 1 includes a laser cladding device 11 and an adjusting device 12. The adjusting device 12 has a supporting portion and a disassembly portion located at its end and multiple adjusting portions located between the supporting portion and the disassembly portion. The adjusting portion is rotatable, and the laser cladding device 11 is connected to the disassembly portion to realize multi-angle adjustment of the laser cladding device 11.

[0031] Preferably, the adjustment device 12 is a six-axis robot, the base of the six-axis robot is the support part, the upper arm and forearm of the six-axis robot are the adjustment part, and the wrist of the six-axis robot is the disassembly part. The base provides stable support for the robot. The upper arm is used to connect the base and the forearm, and can perform large-scale movements. The forearm is used to connect the upper arm and the wrist to increase the working range of the robot. The wrist is used to connect the forearm and the end effector (laser cladding device 11), and is responsible for accurately controlling the position and posture of the end effector.

[0032] The six-axis robot has six rotating joints, each of which corresponds to one degree of freedom, and can achieve pitch, yaw, roll, extension, rotation, and wrist flipping. The six-axis robot can simulate the movement of human arms and adapt to complex working environments. It can accurately control the position and posture of the end effector and is suitable for precision operations. The robot's motion trajectory can be easily set through teaching programming or computer-aided programming.

[0033] The fixing assembly 2 is located on one side of the cladding assembly 1, and the fixing assembly 2 includes a base 21 and a mounting seat 22. The base 21 is horizontally fixed on the ground, and the mounting seat 22 is connected to the base 21. The mounting seat 22 is cylindrical and arranged in the horizontal direction. The mounting seat 22 has a plurality of moving parts 221, and the plurality of moving parts 221 are spaced around the central axis of the mounting seat 22. The moving parts 221 are movable along the radial direction of the mounting seat 22. The moving parts 221 are provided with fixing parts 222, and the plurality of fixing parts 222 are respectively inserted into the bolt holes 200 of the shield machine scraper 100, and the area to be operated of the shield machine scraper 100 faces the laser cladding device 11.

[0034] It can be understood that after selecting a plurality of suitable bolt holes 200 on the scraper 100 to be laser clad, and passing a plurality of fixing members 222 on the cladding mounting seat 22 through the plurality of bolt holes 200 respectively, a plurality of moving parts 221 are synchronously moved outward or inward to lock the scraper 100. The six-axis robot fixed on one side is equipped with a laser cladding device 11, and the scraper 100 is automatically laser clad according to the programmed program. The cladding part 300 of the scraper 100 after the operation is completed is as shown in FIG. Figure 4 and Figure 5 shown.

[0035] The laser cladding system for the shield machine scraper of the embodiment of the present invention utilizes a six-axis robot equipped with a laser cladding device 11 to perform automated laser cladding of wear-resistant materials on the shield machine scraper 100, thereby avoiding the disadvantages of low efficiency, high cost, and uncontrollable welding quality that the wear resistance of the scraper 100 can only be improved by manually surfacing wear-resistant materials and welding wear-resistant alloy blocks in the related technology.

[0036] Therefore, the shield machine scraper 100 is laser-clad with wear-resistant materials to enhance the wear resistance of the scraper 100, increase the service life of the tool, reduce the frequency of stopping the shield machine for tool replacement, improve excavation efficiency, and reduce construction costs.

[0037] Compared with the traditional alloy block inlay method, the laser cladding method has the advantages of better wear resistance and better applicability, which can further reduce the frequency of shield machine shutdown and tool change during operation, improve excavation efficiency and reduce construction costs.

[0038] A six-axis robot is used to replace manual operation. After the program is written once, the cladding operation can be automatically performed in batches, which improves production efficiency, shortens manufacturing time and saves production costs.

[0039] In some embodiments, Figure 1 and Figure 3 As shown, the fixing assembly 2 further includes a fixing bracket 23, and the mounting seat 22 is connected to the base 21 via the fixing bracket 23, so that the scraper 100 to be processed is fixed at a certain height, which is convenient for implementing the laser cladding operation.

[0040] Furthermore, the mounting seat 22 is rotatable on the fixed bracket 23, so as to facilitate the adjustment of the angle of the scraper 100 and further improve the production efficiency.

[0041] Alternatively, if Figure 1 and Figure 3 As shown, the fixed bracket 23 includes two vertical plates and multiple connecting rods. The two vertical plates are spaced apart in the horizontal direction, and the two vertical plates are connected by multiple connecting rods. A frame structure is adopted to reduce costs.

[0042] Alternatively, if Figure 1 and Figure 3 As shown, a main shaft 24 is provided between the two vertical plates, the main shaft 24 is rotatably connected to the vertical plates, and the mounting seat 22 is connected to one end of the main shaft 24 , thereby realizing the rotation function of the mounting seat 22 .

[0043] Furthermore, if Figure 1 and Figure 3 As shown, a motor 25 is provided at the other end of the main shaft 24 , and the motor 25 is fixed to one side of the vertical plate. The main shaft 24 is driven to rotate by the motor 25 to drive the mounting seat 22 to rotate, thereby adjusting the angle of the scraper 100 .

[0044] In some embodiments, the mounting base 22 is a chuck, and the moving part 221 is a claw on the chuck. The angle between two adjacent moving parts 221 on the mounting base 22 is 60°, 90°, 120° or 180°, and different angles correspond to different types of chucks, such as a two-claw chuck, a three-claw chuck, a four-claw chuck, and a six-claw chuck.

[0045] Preferably, the mounting seat 22 is a three-jaw chuck. A driving member (a meshing bevel gear set) is provided inside the mounting seat 22, and the driving member is connected to the plurality of moving parts 221 to drive the plurality of moving parts 221 to move closer to or farther from each other.

[0046] Specifically, the bevel gear is rotated with a voltaic wrench, and the bevel gear drives the flat rectangular thread, and then drives the three claws to move centripetally. Because the pitch of the flat rectangular thread is equal, the three claws move the same distance, which has the function of automatic centering. The three-jaw chuck is composed of a large bevel gear, three small bevel gears, and three claws. The three small bevel gears are meshed with the large bevel gear, and the back of the large bevel gear has a flat thread structure, and the three claws are equally installed on the flat thread. When the small bevel gear is turned with a wrench, the large bevel gear rotates, and the flat thread on its back causes the three claws to approach or withdraw from the center at the same time.

[0047] In some embodiments, Figure 1 and Figure 3 As shown, the fixing member 222 is a steel rod, and the axial direction of the fixing member 222 is parallel to the axial direction of the mounting seat 22. The steel rod is inserted into the bolt hole 200 of the scraper 100 and adjusted inwardly or outwardly to lock the scraper 100.

[0048] Optionally, a threaded hole is provided on the movable part 221, and an external thread that fits in the threaded hole is provided on the peripheral wall of the fixing part 222, so that the fixing part 222 and the movable part 221 can be detachably connected. According to the size of the bolt hole 200 of the actual scraper 100, the fixing part 222 of matching size can be replaced to improve the adaptability of the device.

[0049] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A laser cladding system for a shield machine scraper, characterized in that: include: A cladding assembly, the cladding assembly comprising a laser cladding device and an adjusting device, the adjusting device having a supporting portion and a disassembling portion at its end and a plurality of adjusting portions located between the supporting portion and the disassembling portion, the adjusting portion being rotatable, and the laser cladding device being connected to the disassembling portion; A fixing component, which is located on one side of the cladding component. The fixing component includes a base and a mounting seat, which is connected to the base. The mounting seat is cylindrical and arranged in a horizontal direction. The mounting seat has a plurality of movable parts, and the plurality of movable parts are spaced around the central axis of the mounting seat. The movable part is movable along the radial direction of the mounting seat. A fixing part is provided on the movable part, and the plurality of fixing parts are respectively inserted into the bolt holes of the shield machine scraper, and the area to be operated of the shield machine scraper faces the laser cladding device.

2. The laser cladding system for shield machine scraper according to claim 1, characterized in that: The adjusting device is a six-axis robot.

3. The laser cladding system for a shield machine scraper according to claim 1, characterized in that: The fixing assembly also includes a fixing bracket, the mounting seat is connected to the base via the fixing bracket, and the mounting seat is rotatable on the fixing bracket.

4. The laser cladding system for a shield machine scraper according to claim 3, characterized in that: The fixing bracket includes two vertical plates and a plurality of connecting rods. The two vertical plates are spaced apart in the horizontal direction, and the two vertical plates are connected by the plurality of connecting rods.

5. The laser cladding system for a shield machine scraper according to claim 4, characterized in that: A main shaft is provided between the two vertical plates, the main shaft is rotatably connected to the vertical plates, and the mounting seat is connected to one end of the main shaft.

6. The laser cladding system for a shield machine scraper according to claim 5, characterized in that: A motor is provided at the other end of the main shaft, and the motor is fixed on one side of the vertical plate.

7. The laser cladding system for a shield machine scraper according to claim 1, characterized in that: The angle between two adjacent moving parts on the mounting seat is 60°, 90°, 120° or 180°.

8. The laser cladding system for a shield machine scraper according to claim 7, characterized in that: A driving member is provided in the mounting seat, and the driving member is connected to the plurality of moving parts to drive the plurality of moving parts to move closer to or farther from each other.

9. The laser cladding system for a shield machine scraper according to claim 8, characterized in that: The fixing piece is a steel rod, and the axial direction of the fixing piece is parallel to the axial direction of the mounting seat.

10. The laser cladding system for a shield machine scraper according to claim 9, characterized in that: The movable part is provided with a threaded hole, and the peripheral wall of the fixing part is provided with an external thread matched in the threaded hole.

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