Bucket rod fan-shaped seat positioning device and bucket rod positioning system

Abstract

The invention relates to the technical field of excavator bucket rod positioning, and discloses a bucket rod fan-shaped seat positioning device and a bucket rod positioning system.The bucket rod fan-shaped seat positioning device comprises a first positioning assembly and a second positioning assembly, the first positioning assembly comprises a reaming positioning structure and a first driving mechanism, and the reaming positioning structure comprises a reaming insertion part; the first driving mechanism is used for driving the reaming positioning structure to move so as to enable the reaming inserting part to be inserted into a reaming hole of the bucket rod fan-shaped seat; and the second positioning assembly comprises a welding seam positioning structure and a second driving mechanism, the welding seam positioning structure comprises a clamping structure capable of being placed in a mode of being matched with the fan-shaped outer contour of the bucket rod fan-shaped base, and the second driving mechanism is used for driving the welding seam positioning structure to move so that the clamping structure can be clamped in a splicing welding seam of the bucket rod fan-shaped base and the bucket rod side plate. According to the bucket rod fan-shaped seat positioning device and the bucket rod positioning system, the consistency and uniformity of the tailor-welding gap between the bucket rod fan-shaped seat and the bucket rod side plate can be guaranteed, and the quality of bucket rod products can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of excavator boom positioning, and specifically relates to a boom fan-shaped seat positioning device and a boom positioning system. Background Art

[0002] The dipper arm of the excavator is an important part connecting the bucket and the boom. Figure 6 As shown in the figure, it is mainly composed of a side plate assembly, a fan-shaped seat and an ear plate seat. In the production process of the boom, the uniformity of the welding gap between the fan-shaped seat and the side plate will directly affect the production quality of the boom. Therefore, the positioning accuracy of the fan-shaped seat is very important. If the fan-shaped seat is positioned by pins manually, not only will the gap between the fan-shaped seat and the side plate be uneven, but it will also consume a lot of manpower and time, resulting in low production efficiency. Therefore, it is urgent to provide an efficient positioning device. Summary of the invention

[0003] In response to at least one of the above-mentioned defects or shortcomings of the prior art, the present application provides a boom fan-shaped seat positioning device and a boom positioning system, which can ensure the consistency and uniformity of the welding gap between the boom fan-shaped seat and the boom side plate, improve the welding quality, save labor costs and improve production efficiency.

[0004] In order to achieve the above-mentioned purpose, the present application provides a bucket arm fan seat positioning device, comprising:

[0005] A first positioning assembly, comprising a reaming hole positioning structure and a first driving mechanism, wherein the reaming hole positioning structure comprises a reaming hole plug-in portion, and the first driving mechanism is used to drive the reaming hole positioning structure to move so that the reaming hole plug-in portion is plugged into the reaming hole of the boom sector seat; and

[0006] The second positioning assembly includes a weld positioning structure and a second driving mechanism, wherein the weld positioning structure includes a clamping structure that can be matched with the fan-shaped outer contour of the boom fan-shaped seat, and the second driving mechanism is used to drive the weld positioning structure to move so that the clamping structure is clamped in the splicing weld between the boom fan-shaped seat and the boom side plate.

[0007] In some embodiments, the weld positioning structure includes a positioning plate, the clamping structure is disposed on the positioning plate and includes a plurality of clamping die assemblies arranged in sequence and spaced apart, the connecting lines between the plurality of clamping die assemblies match the fan-shaped outer contour setting of the boom fan-shaped seat, and the clamping die assembly includes a top surface and a bottom surface for respectively abutting the welding surface of the boom fan-shaped seat and the welding surface of the boom side plate.

[0008] In some embodiments, the reaming hole positioning structure includes a guide positioning shaft and a positioning joint connected to the end of the guide positioning shaft, the positioning joint is formed as the reaming hole plug-in portion, the boom fan-shaped seat positioning device includes a movable mounting seat, the movable mounting seat is provided with a guide sleeve portion, the guide positioning shaft can be axially movably inserted into the guide sleeve portion, and the first driving mechanism is transmission-connected to the guide positioning shaft.

[0009] In some embodiments, one end of the guide positioning shaft is connected to the positioning joint, and the outer peripheral wall of the other end is provided with a stop portion extending radially, and the boom fan seat positioning device includes a limit block detachably connected to the end surface of the guide sleeve portion for abutting the stop portion.

[0010] In some embodiments, the first driving mechanism is formed as a first telescopic mechanism, which includes a first cylinder portion and a first telescopic rod telescopically and movably inserted into the first cylinder portion, the movable mounting seat is provided with a first supporting structure, the first cylinder portion is fixedly connected to the first supporting structure, and the first telescopic rod is transmission-connected to the end of the guide positioning shaft.

[0011] In some embodiments, the weld positioning structure includes a positioning plate that is movably sleeved on the guide positioning shaft, and the clamping structure is disposed on the positioning plate.

[0012] In some embodiments, the second driving mechanism is formed as a second telescopic mechanism, which includes a second cylinder portion and a second telescopic rod telescopically and movably inserted into the second cylinder portion, the movable mounting seat is provided with a second supporting structure, the second cylinder portion is fixedly connected to the second supporting structure, and the second telescopic rod is fixedly connected to the positioning plate.

[0013] In some embodiments, the arm sector seat positioning device includes a lifting drive mechanism for driving the movable mounting seat to lift and lower.

[0014] In some embodiments, the boom fan-shaped seat positioning device also includes a support frame and a height-adjustable height limit column, the support frame includes an upper limit cover and a lower limit platform spaced apart in an upper and lower direction, the lifting drive mechanism is arranged between the upper limit cover and the lower limit platform, the height limit column is vertically arranged on one of the upper limit cover and the lower limit platform, and the lifting drive mechanism can drive the movable mounting seat to move up and down until it abuts against the limit end of the height limit column.

[0015] A second aspect of the present application provides a boom positioning system, which includes the above-mentioned boom fan-shaped seat positioning device.

[0016] Through the above technical scheme, when the arm fan-shaped seat positioning device of the present invention is used to perform a positioning operation on the arm fan-shaped seat, the first driving mechanism can be used to drive the reaming hole positioning structure to move toward the arm fan-shaped seat, so that the reaming hole plug-in portion is inserted into the reaming hole of the arm fan-shaped seat, thereby completing the rough positioning of the arm fan-shaped seat, and then the second driving mechanism is used to drive the weld positioning structure to move toward the arm fan-shaped seat until the clamping structure is clamped in the splicing weld between the arm fan-shaped seat and the arm side plate. Since the arrangement shape of the clamping structure is similar to the fan-shaped outer contour of the arm fan-shaped seat and the thickness is uniform, the spacing of the splicing welds between the arm fan-shaped seat and the arm side plate can be ensured to be consistent and have extremely high uniformity, thereby effectively improving the welding quality. At the same time, the entire positioning process has a high degree of automation, and there is no need for manual pin positioning, which can greatly improve the production efficiency of the arm and reduce labor costs.

[0017] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0019] Figure 1 It is a schematic diagram of a bucket arm fan-shaped seat positioning device in a specific implementation manner of the present application;

[0020] Figure 2 for Figure 1 A cross-sectional view AA of the arm sector seat positioning device;

[0021] Figure 3 for Figure 1 A schematic diagram of the other side of the arm sector seat positioning device;

[0022] Figure 4 for Figure 3 A cross-sectional view BB of the bucket arm sector seat positioning device;

[0023] Figure 5 for Figure 1 A schematic diagram of a movable mounting seat in a bucket arm sector seat positioning device;

[0024] Figure 6 The present invention is a schematic diagram of an excavator bucket arm in the prior art.

[0025] Description of Reference Numerals

[0026] 1 Reaming positioning structure 101 Guide positioning shaft

[0027] 1011 stopper 102 positioning joint

[0028] 2 First drive mechanism 201 First cylinder part

[0029] 202 first telescopic rod 3 welding seam positioning structure

[0030] 301 positioning plate 302 card mold assembly

[0031] 3021 card mold 3022 adjustable connection block

[0032] 4 Second drive mechanism 401 Second cylinder part

[0033] 402 second telescopic rod 5 movable mounting seat

[0034] 501 guide sleeve portion 502 first supporting structure

[0035] 503 Second support structure 6 limit block

[0036] 7 Lifting drive mechanism 701 upper bearing

[0037] 702 lower bearing 703 screw

[0038] 704 Nut 705 Guide Rail

[0039] 706 Slider 707 Handwheel

[0040] 8 Support frame 801 upper limit cover

[0041] 802 Lower limit table 9 Height limit column

[0042] 10 Arm fan-shaped seat 11 Arm side plate DETAILED DESCRIPTION

[0043] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0044] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0045] like Figures 1 to 6As shown, the first exemplary embodiment of the present application provides a bucket arm sector seat positioning device, which includes a first positioning assembly and a second positioning assembly. The first positioning assembly includes a reaming hole positioning structure 1 and a first driving mechanism 2, the reaming hole positioning structure 1 includes a reaming hole plug-in portion, and the first driving mechanism 2 is used to drive the reaming hole positioning structure 1 to move so that the reaming hole plug-in portion can be plugged into the reaming hole of the bucket arm sector seat 10; the second positioning assembly includes a weld positioning structure 3 and a second driving mechanism 4, the weld positioning structure 3 includes a clamping structure that can match the fan-shaped outer contour of the bucket arm sector seat 10, and the second driving mechanism is used to drive the weld positioning structure 3 to move so that the clamping structure is clamped in the joint weld between the bucket arm sector seat and the bucket arm side plate 11.

[0046] It can be seen that when the arm fan-shaped seat positioning device of the exemplary embodiment is used to perform the positioning operation on the arm fan-shaped seat 10, the first driving mechanism 2 can be used to drive the reaming hole positioning structure 1 to move toward the arm fan-shaped seat 10 until the reaming hole plug-in portion of the reaming hole positioning structure 1 is aligned and plugged into the reaming hole of the arm fan-shaped seat 10, thereby completing the rough positioning of the arm fan-shaped seat 10, and then the second driving mechanism 4 is used to drive the weld positioning structure 3 to move toward the arm fan-shaped seat 10 until the clamping structure of the weld positioning structure 3 is clamped in the splicing weld between the arm fan-shaped seat 10 and the arm side plate 11. Thanks to the shape of the clamping structure being similar to the fan-shaped outer contour of the arm fan-shaped seat 10 and the uniform thickness of the clamping structure, it can ensure that the spacing of the splicing welds between the arm fan-shaped seat 10 and the arm side plate 11 is consistent and has extremely high uniformity, thereby effectively improving the welding quality of the arm fan-shaped seat 10. At the same time, the entire positioning process of the boom sector seat 10 is highly automated, and there is no need for manual pin positioning, which can greatly improve the production efficiency of the boom and reduce labor costs.

[0047] In an optional or preferred embodiment, the weld positioning structure 3 includes a positioning plate 301, and the clamping structure is arranged on the positioning plate 301. Specifically, the clamping structure includes a plurality of clamping die assemblies 302 arranged in sequence and spaced apart, and the connection line between the plurality of clamping die assemblies 302 matches the fan-shaped outer contour of the bucket arm sector seat. The clamping die assembly 302 includes a clamping die 3021, and the top surface and the bottom surface of the clamping die 3021 are respectively used to abut the welding surface of the bucket arm sector seat and the welding surface of the bucket arm side plate. The clamping die 3021 can be mounted on the positioning plate 301 by means of an internal thread cylindrical pin and an internal hexagon screw. Furthermore, the clamping die assembly 302 also includes an adjustable connecting block 3022, which can be installed between the clamping die 3021 and the positioning plate 301, and a gasket for buffering can be provided between the adjustable connecting block 3022 and the positioning plate 301. The position of the clamping die 3021 relative to the positioning plate 301 can be fine-tuned by adding or removing the gasket, so as to adapt to the positioning requirements of the boom sector seat 10 of different sizes. The present application does not limit the specific structural shape of the positioning plate 301. For example, it can be the sector-shaped positioning plate shown in the accompanying drawings, and it can also be set to a rectangle, a circle, etc., as long as it can meet the arrangement and installation of multiple clamping die assemblies 302. Preferably, the positioning plate 301 is set to a sector-shaped positioning plate, and its outer contour is similar to the outer contour of the boom sector seat, refer to Figure 1 As shown, a plurality of clamping mold assemblies 302 are sequentially and spaced apart from each other on the outer edge of the positioning plate 301 .

[0048] In other embodiments, the clamping structure may also be a clamping strip extending and arranged to match the outer contour of the bucket arm sector seat 10, and the length of the clamping strip may be longer than the above-mentioned clamping die 3021, and can be integrally clamped in the joint weld between the bucket arm sector seat 10 and the bucket arm side plate 11. It should be noted that the present application does not limit the specific structure of the clamping structure, as long as it can be adaptively limited and clamped in the joint weld.

[0049] In an optional or preferred embodiment, Figure 2 As shown, the reaming hole positioning structure 1 includes a guide positioning shaft 101 and a positioning joint 102 connected to the end of the guide positioning shaft 101. The positioning joint 102 is formed as the above-mentioned reaming hole plug-in portion, which can be adapted to the reaming hole of the boom sector seat 10 and plugged therein. Specifically, the positioning joint 102 can be connected together with a boss structure at the end of the guide positioning shaft 101 through a groove structure on its own structure with a small clearance, and at the same time, the positioning joint 102 and the guide positioning shaft 101 are locked through a hexagon socket screw. Therefore, the positioning joint 102 of this exemplary embodiment can support disassembly and replacement, and has higher flexibility and adaptability. At the same time, the boom sector seat positioning device also includes a movable mounting seat 5, such as Figure 5As shown, the movable mounting seat 5 is provided with a guide sleeve portion 501, and the guide positioning shaft 101 can be inserted into the guide sleeve portion 501 movably along the axial direction. For example, a copper-based graphite sleeve with a lubricating effect can be provided between the guide positioning shaft 101 and the guide sleeve portion 501 to improve the sliding smoothness of the guide positioning shaft 101. The first driving mechanism 2 is connected to the guide positioning shaft 101 in a transmission manner, so as to drive the guide positioning shaft 101 to move along the guide sleeve portion 501, and drive the positioning joint 102 to be inserted into the reaming hole of the bucket arm sector seat 10.

[0050] In an optional or preferred embodiment, one end of the guide positioning shaft 101 is connected to the positioning joint 102, and the outer peripheral wall of the other end is provided with a stopper 1011 extending in the radial direction. Figure 3 As shown, the arm sector seat positioning device includes a stopper block 6 detachably connected to the end surface of the guide sleeve portion 501 for abutting against the stopper portion 1011. Therefore, by replacing the stopper blocks 6 of different thicknesses or increasing or decreasing different numbers, the length of the portion of the guide positioning shaft 101 extending out of the guide sleeve portion 501 can be controlled, so that the positioning joint 102 can be inserted into the reaming hole of the arm sector seat 10 at an appropriate depth.

[0051] In an optional or preferred embodiment, Figure 2 and Figure 5 As shown, the first driving mechanism 2 is formed as a first telescopic mechanism, which includes a first cylinder portion 201 and a first telescopic rod 202 which is telescopically and movably inserted into the first cylinder portion 201, and the movable mounting seat 5 is provided with a first supporting structure 502, the first cylinder portion 201 is fixedly connected to the first supporting structure 502, and the first telescopic rod 202 is transmission-connected to the end of the guide positioning shaft 101.

[0052] In the embodiment shown in the drawings, the first telescopic rod 202 is connected to the other end of the guide positioning shaft 101 opposite to the positioning joint 102 in a transmission manner. When the first telescopic rod 202 is retracted to the first cylinder portion 201, the guide positioning shaft 101 can be driven to extend out of the guide sleeve portion 501, thereby driving the positioning joint 102 to move in a direction close to the arm sector seat 10; conversely, when the first telescopic rod 202 extends out of the first cylinder portion 201, the guide positioning shaft 101 can be driven to retract to the guide sleeve portion 501, thereby driving the positioning joint 102 to move in a direction away from the arm sector seat 10. Of course, in other embodiments, the first telescopic mechanism can be arranged in the reverse direction, so that when the first telescopic rod 202 extends out of the first cylinder portion 201, the guide positioning shaft 101 is driven to extend out of the guide sleeve portion 501, and when the first telescopic rod 202 is retracted to the first cylinder portion 201, the guide positioning shaft 101 is driven to retract to the guide sleeve portion 501. The present application does not limit the arrangement direction of the first telescopic mechanism and the connection method with the guide positioning shaft 101 .

[0053] In an optional or preferred embodiment, Figure 2 As shown, the positioning plate 301 can be movably sleeved on the guide positioning shaft 101 along the axial direction. For example, a copper-based graphite set with a lubricating effect can be set between the positioning plate 301 and the guide positioning shaft 101, so as to ensure the sliding smoothness of the positioning plate 301. Therefore, under the drive of the second driving mechanism 4, the weld positioning structure 3 can move toward the arm sector seat 10 under the guidance of the guide positioning shaft 101, so as to realize the clamping structure clamping in the joint weld between the arm sector seat 10 and the arm side plate 11. Under the support of the guide positioning shaft 101, the movement stability of the weld positioning structure 3 can be better, thereby improving the positioning accuracy of the clamping structure. At the same time, the guide positioning shaft 101 is cleverly used as the guide structure of the weld positioning structure 3, and no other additional guide structures are required, so that the overall structure of the arm sector seat positioning device can be simplified and the manufacturing cost can be reduced.

[0054] Furthermore, the second driving mechanism 4 is formed as a second telescopic mechanism, which includes a second cylinder portion 401 and a second telescopic rod 402 which is telescopically and movably inserted into the second cylinder portion 401, and the movable mounting seat 5 is provided with a second supporting structure 503, the second cylinder portion 401 is fixedly connected to the second supporting structure 503, and the second telescopic rod 402 is fixedly connected to the positioning plate 301.

[0055] In the embodiment shown in the drawings, when the second telescopic rod 402 extends out of the second cylinder portion 401, the positioning plate 301 can be driven to move in a direction away from the movable mounting seat 5, thereby driving the clamping die 3021 to move in a direction close to the arm sector seat 10; on the contrary, when the second telescopic rod 402 retracts to the second cylinder portion 401, the positioning plate 301 can be driven to move in a direction close to the movable mounting seat 5, thereby driving the clamping die 3021 to move in a direction away from the arm sector seat 10. Of course, in other embodiments, the second telescopic mechanism can be arranged in the opposite direction, so that when the second telescopic rod 402 extends out of the second cylinder portion 401, the positioning plate 301 is driven to move in a direction close to the movable mounting seat 5, and when the second telescopic rod 402 retracts to the second cylinder portion 401, the positioning plate 301 is driven to move in a direction away from the movable mounting seat 5. The present application does not limit the arrangement direction of the second telescopic mechanism and the connection method with the positioning plate 301.

[0056] In an optional or preferred embodiment, the arm fan-shaped seat positioning device includes a lifting drive mechanism 7 for driving the movable mounting seat 5 to lift and lower. Specifically, the lifting drive mechanism 7 can be a screw drive mechanism, a telescopic drive mechanism, etc. This embodiment takes the screw drive mechanism as an example. Figure 4As shown, it includes an upper bearing 701, a lower bearing 702, a screw rod 703, a nut 704, a guide rail 705, a slider 706 and a hand wheel 707. The upper bearing 701 and the lower bearing 702 are respectively mounted on the upper limit cover 801 and the lower limit platform 802 of the support frame 8 through the bearing mounting seat, the screw rod 703 is mounted in the upper bearing 701 and the lower bearing 702 through interference fit, the nut 704 is connected to the screw rod 703 through a spiral fit, the nut 704 can be mounted in the nut fixing seat through interference fit, the nut fixing seat is fixedly connected to the movable mounting seat 5 through bolts and washers, the guide rail 705 is arranged on the support frame 8 along a vertical extension, the slider 706 is slidably connected to the guide rail 705 and fixedly connected to the movable mounting seat 5, and the hand wheel 707 is mounted on the screw rod 703 through a flat key. Thus, by rotating the hand wheel 707, the screw rod 703 can be driven to rotate, so that the nut 704 moves along the axial direction of the screw rod 703, and the nut 704 is fixedly connected to the movable mounting seat 5 through the nut fixing seat, and the movable mounting seat 5 is fixedly connected to the slider 706, so that when the nut 704 moves along the axial direction of the screw rod 703, it can drive the movable mounting seat 5 to slide along the guide rail 705 to achieve the effect of lifting and lowering. Because the first positioning assembly and the second positioning assembly are both installed on the movable mounting seat 5, the first positioning assembly and the second positioning assembly can achieve lifting and lowering adjustment.

[0057] In an optional or preferred embodiment, the boom fan-shaped seat positioning device also includes a support frame 8 and a height-adjustable height limit column 9, the support frame 8 includes an upper limit cover 801 and a lower limit platform 802 spaced apart from each other, the lifting drive mechanism 7 is arranged between the upper limit cover 801 and the lower limit platform 802, the height limit column 9 is vertically arranged on one of the upper limit cover 801 and the lower limit platform 802, the lifting drive mechanism 7 can drive the movable mounting seat 5 to move up and down to the limit end abutting against the height limit column 9, in other words, when the lifting drive mechanism 7 drives the movable mounting seat 5 to lift and adjust, when the movable mounting seat 5 abuts against the height limit column 9, it can be confirmed that the movable mounting seat 5 at this time has reached the preset height, thereby improving the positioning accuracy. Specifically, in this exemplary embodiment, the height limiting column 9 can be inserted in the upper limit cover 801 or the lower limit platform 802 through a small clearance fit, and the limiting end of the height limiting column 9 can be provided with a gasket, or a gasket can be provided on the end face of the movable mounting seat 5 to prevent the movable mounting seat 5 from being damaged when it contacts the height limiting column 9. As shown in the accompanying drawings, when the height limiting column 9 is set on the lower limit platform 802, when the movable mounting seat 5 drops to abut against the height limiting column 9, it can be regarded as the movable mounting seat 5 is at a preset height. In other embodiments, when the height limiting column 9 is set on the upper limit cover 801, when the movable mounting seat 5 rises to abut against the height limiting column 9, it can be regarded as the movable mounting seat 5 is at a preset height. This application does not limit the installation position of the height limiting column 9, as long as it can meet the height adjustment requirements. Of course, when the height limiting column 9 is set on the lower limit platform 802, the height limiting column 9 can support the movable mounting seat 5, thereby improving the stability of the movable mounting seat 5.

[0058] The second exemplary embodiment of the present application provides a boom positioning system, which includes the above-mentioned boom fan-shaped seat positioning device. Obviously, the boom positioning system of this exemplary embodiment has all the technical effects brought by the above-mentioned boom positioning system, which are not limited here.

[0059] In the description of the present application, it should be understood that 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In this application, 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 connection; 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 this application can be understood according to specific circumstances.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described 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.

[0062] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. The bucket arm fan-shaped seat positioning device is characterized by: include: A first positioning assembly comprises a reaming hole positioning structure (1) and a first driving mechanism (2), wherein the reaming hole positioning structure (1) comprises a reaming hole plug-in portion, and the first driving mechanism (2) is used to drive the reaming hole positioning structure (1) to move so that the reaming hole plug-in portion is plugged into the reaming hole of the boom sector seat; and The second positioning assembly comprises a weld positioning structure (3) and a second driving mechanism (4), wherein the weld positioning structure (3) comprises a clamping structure capable of matching the fan-shaped outer contour of the boom fan-shaped seat, and the second driving mechanism is used to drive the weld positioning structure (3) to move so that the clamping structure is clamped in the joint weld between the boom fan-shaped seat and the boom side plate.

2. The arm sector seat positioning device according to claim 1, characterized in that: The weld positioning structure (3) comprises a positioning plate (301), the clamping structure is arranged on the positioning plate (301) and comprises a plurality of clamping die assemblies (302) arranged in sequence and spaced apart, the connection line between the plurality of clamping die assemblies (302) matches the fan-shaped outer contour setting of the boom fan-shaped seat, and the clamping die assembly (302) comprises a clamping die (3021) whose top and bottom surfaces are respectively used to abut against the welding surface of the boom fan-shaped seat and the welding surface of the boom side plate.

3. The arm sector seat positioning device according to claim 1, characterized in that: The reaming hole positioning structure (1) comprises a guide positioning shaft (101) and a positioning joint (102) connected to the end of the guide positioning shaft (101), wherein the positioning joint (102) is formed as the reaming hole plug-in portion, and the boom fan-shaped seat positioning device comprises a movable mounting seat (5), wherein the movable mounting seat (5) is provided with a guide sleeve portion (501), and the guide positioning shaft (101) can be axially movably inserted into the guide sleeve portion (501), and the first driving mechanism (2) is transmission-connected to the guide positioning shaft (101).

4. The arm sector seat positioning device according to claim 3, characterized in that: One end of the guide positioning shaft (101) is connected to the positioning joint (102), and the outer peripheral wall of the other end is provided with a stopper (1011) extending in the radial direction, and the boom sector seat positioning device includes a limit block (6) detachably connected to the end surface of the guide sleeve portion (501) for abutting against the stopper (1011).

5. The arm sector seat positioning device according to claim 3, characterized in that: The first driving mechanism (2) is formed as a first telescopic mechanism, comprising a first cylinder portion (201) and a first telescopic rod (202) telescopically and movably inserted into the first cylinder portion (201), the movable mounting seat (5) is provided with a first supporting structure (502), the first cylinder portion (201) is fixedly connected to the first supporting structure (502), and the first telescopic rod (202) is drivingly connected to the end of the guide positioning shaft (101).

6. The arm sector seat positioning device according to claim 3, characterized in that: The weld positioning structure (3) comprises a positioning plate (301) movably sleeved on the guide positioning shaft (101), and the clamping structure is arranged on the positioning plate (301).

7. The arm sector seat positioning device according to claim 6, characterized in that: The second driving mechanism (4) is formed as a second telescopic mechanism, which includes a second cylinder portion (401) and a second telescopic rod (402) which is telescopically and movably inserted into the second cylinder portion (401), and the movable mounting seat (5) is provided with a second supporting structure (503), the second cylinder portion (401) is fixedly connected to the second supporting structure (503), and the second telescopic rod (402) is fixedly connected to the positioning plate (301).

8. The arm sector seat positioning device according to claim 3, characterized in that: The arm sector seat positioning device comprises a lifting drive mechanism (7) for driving the movable mounting seat (5) to lift and lower.

9. The arm sector seat positioning device according to claim 8, characterized in that: The arm fan-shaped seat positioning device also includes a support frame (8) and a height-adjustable height-limiting column (9), wherein the support frame (8) includes an upper limit cover (801) and a lower limit platform (802) spaced apart from each other, the lifting drive mechanism (7) is arranged between the upper limit cover (801) and the lower limit platform (802), the height-limiting column (9) is vertically arranged on one of the upper limit cover (801) and the lower limit platform (802), and the lifting drive mechanism (7) is capable of driving the movable mounting seat (5) to move upward and downward until it abuts against a limit end of the height-limiting column (9).

10. The arm positioning system is characterized by: The boom positioning system comprises a boom sector seat positioning device according to any one of claims 1 to 9.

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