Clamping fixture for manufacturing grab bucket supporting rod

Abstract

A clamping fixture for manufacturing a grab bucket supporting rod belongs to the technical field of machining and comprises an I-shaped base, the base comprises a longitudinal beam and a cross beam, a first mounting hole is formed in the middle of the cross beam and detachably connected with a supporting seat through a bolt, and a first threaded hole is transversely formed in the supporting seat; the first threaded hole is connected with a supporting positioning shaft; the supporting and positioning shaft comprises a threaded part and a supporting part, the threaded part and the supporting part are fixedly connected through a positioning plate, the threaded part is in threaded connection with the first threaded hole, the supporting part is used for being inserted into a shaft hole of the grab bucket supporting rod, and the positioning plate is used for being attached to and positioned on a side plate of the grab bucket supporting rod. According to the grab bucket supporting rod positioning device, supporting and positioning of the ends of the grab bucket supporting rod are achieved, supporting stability and positioning precision are high, displacement of workpieces is limited, the problems of size deviation, assembly deformation and the like are avoided, repeated manufacturing precision of the grab bucket supporting rod is high, it is effectively guaranteed that the center distance between the two ends of the supporting rod is consistent, and product consistency is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a jig for manufacturing grab bucket struts. Background Technology

[0002] The grab bucket strut is an important component of the grab bucket structure. Both ends of the grab bucket strut are provided with shaft holes, which are used to connect to the upper support beam and the bucket body respectively, so as to connect the various parts of the grab bucket into a whole and ensure that the grab bucket can work together during operation to achieve effective grabbing and lifting of materials.

[0003] During the fabrication of grab bucket struts, a jig is required to fix and position the workpiece to improve assembly and welding efficiency and quality, and to ensure the machining accuracy and consistency of the grab bucket struts. Existing jigs for grab bucket strut fabrication typically consist of a base and several support and limiting seats. These support and limiting seats are fixed to the base by welding, providing support and limiting for the grab bucket struts, facilitating subsequent assembly and welding.

[0004] Existing jigs for making grab bucket struts mostly have U-shaped support and limiting seats. While these can support and limit the grab bucket struts, they are prone to problems such as workpiece displacement, dimensional deviation, and deformation. They also result in poor repeatability and cannot guarantee consistent center distance between the two ends of the strut, affecting product consistency. In addition, one end of the strut needs to be welded with a synchronizing gear for synchronous engagement between struts. However, existing jigs for making grab bucket struts mostly only focus on the positioning of the strut body, making it difficult to guarantee the welding and positioning accuracy of the synchronizing gear, which affects the pairing and use of the struts. Utility Model Content

[0005] To address the technical problem in the existing grab bucket strut manufacturing jigs mentioned above, which cannot guarantee the consistent center distance between the two ends of the strut, resulting in poor repeatability and affecting product consistency, this utility model provides a grab bucket strut manufacturing jig.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a jig for manufacturing grab bucket struts, comprising: an I-shaped base, the base including longitudinal beams and transverse beams, a first mounting hole at the middle position of the transverse beams, a support seat detachably connected to the first mounting hole by bolts, a first threaded hole arranged laterally on the support seat, the first threaded hole being connected to a support positioning shaft; the support positioning shaft includes a threaded part and a support part, the threaded part and the support part being fixedly connected by a positioning plate, the threaded part being threadedly connected to the first threaded hole, the support part being used to be inserted into the shaft hole of the grab bucket strut, and the positioning plate being used to fit and position against the side plate of the grab bucket strut. Through the cooperation of the support part and the positioning plate, the end of the grab bucket strut is supported and positioned, with high support stability and positioning accuracy, limiting workpiece displacement, avoiding problems such as dimensional deviation and assembly deformation, and high repeatability of the grab bucket strut manufacturing accuracy, effectively ensuring that the center distance at both ends of the strut is consistent, thus improving product consistency.

[0008] Preferably, the longitudinal beam is provided with a number of second mounting holes at intervals along its length. The second mounting holes are used to detachably connect to the support seat by bolts, which facilitates the adjustment of the position of the support seat on the longitudinal beam to meet the positioning and support requirements of grab bucket struts of different lengths. In addition, different specifications of support positioning shafts can be replaced according to the requirements of different specifications of shaft holes, thereby meeting the manufacturing requirements of grab bucket crossbars of different specifications, and the overall adaptability is strong.

[0009] Preferably, the crossbeam is provided with a number of third mounting holes at intervals along its length. The third mounting holes are used for detachable connection with the support seat by bolts, so that the position of the support seat on the crossbeam can be adjusted as needed to meet different working requirements.

[0010] Preferably, the top of the support base is provided with a second threaded hole, which is perpendicular to the first threaded hole. The second threaded hole is threadedly connected to the support positioning shaft and can be used for the vertical installation of the support positioning shaft. When the synchronous gear needs to be welded and installed, two support bases can be installed on the two crossbeams respectively. The positions of the four support bases are adjusted so that the support positioning shaft on the support base is set vertically. Thus, the two grab bucket struts are horizontally supported and positioned by the four support bases, and the ends of the two grab bucket struts are positioned for installing the synchronous gears. The synchronous gears can be welded to the outer circle of the corresponding grab bucket strut ends, which facilitates the control of the installation position relationship of the synchronous gears and ensures the meshing accuracy between the synchronous gears.

[0011] Preferably, both the longitudinal beam and the transverse beam are provided with guide grooves, which are slidably connected to the support base to guide the support base and facilitate the adjustment of the support base position.

[0012] Preferably, the support base includes a base plate, and a guide block is fixedly provided at the bottom of the base plate and slidably connected to the guide groove so as to slide along the corresponding guide groove and play a guiding role. A column is fixedly provided on the base plate, and a fourth mounting hole is provided on the base plate to facilitate connection with the base by bolts. The first threaded hole and the second threaded hole are both provided on the column for detachable connection with the support positioning shaft.

[0013] Preferably, the column is a rectangular column that can contact the positioning plate to support and position the positioning plate, ensuring the accuracy of the positioning reference.

[0014] Preferably, a reinforcing plate is fixed between the longitudinal beam and the transverse beam, which can effectively improve the connection strength and stability between the longitudinal beam and the transverse beam.

[0015] Preferably, the end of the support is hemispherical, which makes it easier to guide and insert the support.

[0016] Preferably, both the guide groove and the guide block have rectangular cross-sections, which facilitates the limiting and guiding of the guide block and prevents the guide block from deflecting.

[0017] As can be seen from the above technical solutions, the advantages of this utility model are:

[0018] 1. A support base is installed on the base, and a support positioning shaft is installed on the support base. The support positioning shaft is connected to the shaft hole at the end of the grab bucket support rod. Through the cooperation of the support part and the positioning plate, the end of the grab bucket support rod is supported and positioned. The support stability and positioning accuracy are high, which restricts the displacement of the workpiece and avoids problems such as dimensional deviation and assembly deformation. The grab bucket support rod has high repeatability and precision, which effectively ensures that the center distance at both ends of the support rod is consistent and improves the consistency of the product.

[0019] 2. Several second mounting holes are provided at intervals along the length of the longitudinal beam to facilitate the adjustment of the position of the support seat on the longitudinal beam, so as to meet the positioning and support requirements of grab bucket struts of different lengths. In addition, different specifications of support positioning shafts can be replaced according to the requirements of different specifications of shaft holes, thereby meeting the manufacturing requirements of grab bucket crossbars of different specifications, and the overall adaptability is strong.

[0020] 3. The support positioning shaft can be vertically installed on the support base, and two adjustable support bases are provided on each of the two crossbeams. When welding and installing the synchronous gears, the positions of the four support bases can be adjusted so that the support positioning shaft on the support base is set vertically. Thus, the two grab bucket struts are horizontally supported and positioned simultaneously by the four support bases, thereby positioning the ends of the two grab bucket struts for installing the synchronous gears. The synchronous gears can be welded to the outer circle of the corresponding grab bucket strut ends, which facilitates the control of the installation position relationship of the synchronous gears and ensures the meshing accuracy between the synchronous gears. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the grab bucket strut manufacturing jig used to manufacture the strut body according to one or more embodiments of the present invention (bolts not shown).

[0023] Figure 2 This is a structural schematic diagram of the base according to one or more embodiments of the present invention;

[0024] Figure 3 This is a structural schematic diagram of the support base according to one or more embodiments of the present invention;

[0025] Figure 4 This is a structural schematic diagram of the support positioning shaft according to one or more embodiments of the present invention;

[0026] Figure 5 This is a schematic diagram of the use state of the grab bucket strut manufacturing jig according to one or more embodiments of the present invention when installing the synchronization gear (bolts are not shown).

[0027] The components represented by the various reference numerals in the diagram are:

[0028] 1. Base; 2. Support seat; 3. Support positioning shaft; 4. Longitudinal beam; 5. Cross beam; 6. Guide groove; 7. First mounting hole; 8. Second mounting hole; 9. Third mounting hole; 10. Base plate; 11. Column; 12. Guide block; 13. Fourth mounting hole; 14. First threaded hole; 15. Second threaded hole; 16. Threaded part; 17. Positioning plate; 18. Support part; 19. Reinforcing plate. Detailed Implementation

[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0030] Example 1

[0031] In a typical embodiment of this utility model, such as Figures 1-4As shown, a jig for manufacturing a grab bucket strut is proposed, comprising: a base 1, a support seat 2, and a support positioning shaft 3. At least one pair of support seats 2 are provided, and the support seats 2 are detachably mounted on the base 1. The support positioning shaft 3 is detachably connected to the support seat 2 via a threaded connection. The support positioning shaft 3 is used to connect to the shaft hole at the end of the grab bucket strut. The two support positioning shafts 3 have the same horizontal height. The base 1 has an I-shaped structure, including longitudinal beams 4 and transverse beams 5. Two transverse beams 5 are provided, and the two transverse beams 5 are fixedly mounted at both ends of the longitudinal beams 4 by welding. The transverse beams 5 are perpendicular to the longitudinal beams 4. Several first mounting holes 7 are provided at the middle position of the two transverse beams 5 for bolt installation. The two support seats 2 are detachably connected to the middle area of ​​the two transverse beams 5 via bolt installation. The support seat 2 has a horizontally arranged first threaded hole 14, and the support positioning shaft 3 is threadedly connected to the first threaded hole 14, so that the support positioning shaft 3 is detachably mounted laterally on the support seat 2.

[0032] In this embodiment, in order to improve the connection strength between the longitudinal beam 4 and the transverse beam 5, a reinforcing plate 19 is welded and fixed between the longitudinal beam 4 and the transverse beam 5. The reinforcing plate 19 is inclined, which can effectively improve the connection firmness and stability between the longitudinal beam 4 and the transverse beam 5.

[0033] like Figure 4 As shown, the support positioning shaft 3 includes a threaded portion 16, a positioning plate 17, and a support portion 18. Both the threaded portion 16 and the support portion 18 are cylindrical structures. The threaded portion 16 has external threads and can be threadedly connected to the first threaded hole 14 on the support base 2 to achieve a detachable connection between the support positioning shaft 3 and the support base 2. The positioning plate 17 is fixedly installed on one end of the threaded portion 16 by welding, and the support portion 18 is fixedly installed on the positioning plate 17 by welding. The support portion 18 is connected to the threaded portion 16. The 6-axis configuration includes a support part 18 for insertion into the shaft hole of the grab bucket strut, and a positioning plate 17 for contact with the side plate of the grab bucket strut. Through the cooperation of the support part 18 and the positioning plate 17, the end of the grab bucket strut is supported and positioned. The support has high stability and positioning accuracy, which limits the displacement of the workpiece and avoids problems such as dimensional deviation and assembly deformation. The grab bucket strut has high repeatability and precision, which effectively ensures that the center distance between the two ends of the strut is consistent and improves the consistency of the product. In order to facilitate the insertion of the support part 18, the end of the support part 18 is set as a hemispherical shape.

[0034] Specifically, such as Figure 2As shown, the longitudinal beam 4 is provided with several second mounting holes 8 at intervals along its length. The second mounting holes 8 are used for bolt installation. The support seat 2 can be detachably installed on the longitudinal beam 4 by bolt installation. When the length of the grab bucket support rod to be manufactured is shorter than the distance between the two crossbeams 5, a support seat 2 can be installed at a designated position on the longitudinal beam 4 to change the distance between the two support seats 2 to meet the needs of grab bucket support rods of different lengths. At the same time, since the support positioning shaft 3 and the support seat 2 can be detachably installed, different specifications of support positioning shaft 3 can be replaced according to the shaft hole requirements of different specifications (the diameter of the thread part 16 between different specifications of support positioning shaft 3 is the same, and the diameter of the support part 18 is different), thereby meeting the manufacturing requirements of grab bucket crossbars of different specifications, and the overall adaptability is strong.

[0035] Understandably, since the length of the grab bucket support rods of different specifications to be manufactured in the actual factory area is fixed, the distance between the first mounting hole 7 and the second mounting holes 8 at different positions needs to be determined according to the length of the grab bucket support rods of different specifications in actual production. The specific dimensions are not restricted here, so as to realize the quick installation and positioning of the support seat 2 and improve work efficiency.

[0036] like Figure 3 As shown, the support base 2 includes a base plate 10, a column 11, and a fourth mounting hole 13. The column 11 is fixedly mounted on the base plate 10 by welding. There are two fourth mounting holes 13, which are opened on the base plate 10 and are distributed opposite each other on both sides of the column 11. The fourth mounting holes 13 are used for bolt installation. In this embodiment, the column 11 is a rectangular column structure. A first threaded hole 14 is opened laterally on the column 11 to support the lateral installation of the positioning shaft 3. A second threaded hole 15 is opened at the top of the column 11. The second threaded hole 15 is perpendicular to the first threaded hole 14 and is used to support the vertical installation of the positioning shaft 3.

[0037] like Figure 2 As shown, several third mounting holes 9 are spaced apart along the length of the crossbeam 5. The third mounting holes 9 are distributed on both sides of the first mounting holes 7. The third mounting holes 9 are also used for the installation of the support seats 2. When it is necessary to weld and install the synchronous teeth, two support seats 2 can be installed on the two crossbeams 5 respectively. The positions of the four support seats 2 are adjusted so that the support positioning shafts 3 on the support seats 2 are set vertically. Thus, the two grab bucket struts are horizontally supported and positioned by the four support seats 2, and the ends of the two grab bucket struts are positioned for installing the synchronous teeth. The synchronous teeth can be welded to the outer circle of the corresponding grab bucket strut ends to ensure the meshing accuracy between the synchronous teeth.

[0038] It is understood that in other embodiments, an auxiliary crossbeam can also be fixedly installed on the beam of the longitudinal beam 4. The auxiliary crossbeam is used to support the installation of the support seat 2 to further expand the adaptability of the entire jig. The specific configuration can be made according to actual needs, and no further restrictions are imposed here.

[0039] Guide grooves 6 are provided on both the longitudinal beam 4 and the transverse beam 5. The guide grooves 6 are set along the length direction of the corresponding longitudinal beam 4 and transverse beam 5. A guide block 12 is also fixedly provided at the bottom of the base plate 10 of the support seat 2. The cross-section of the guide groove 6 and the guide block 12 is rectangular, so as to limit and guide the guide block 12 and prevent the guide block 12 from deflecting. The guide block 12 is used to be inserted into the guide groove 6 so as to slide along the corresponding guide groove 6 and play a guiding role. Thus, the position of the support seat 2 can be directly pushed after the bolts are removed, making it easier to adjust the position of the support seat 2.

[0040] It should be noted that the guide blocks 12 at the bottom of the two support seats 2 used to connect with the longitudinal beam 4 and the transverse beam 5 are set in different directions.

[0041] The specific working principle is as follows:

[0042] like Figure 5 As shown, when making the grab bucket strut body, a support 2 is installed at the middle position of a crossbeam 5, so that the fourth mounting hole 13 on the support 2 is aligned with the first mounting hole 7 on the crossbeam 5 and bolts are installed. Then, according to the length of the strut body to be made, another support 2 is installed at the middle position of another crossbeam 5 / at the designated position of the longitudinal beam 4, and the first threaded hole 14 of each support 2 is threaded to a transversely arranged support positioning shaft 3.

[0043] First, connect one side plate with shaft holes at both ends of the grab bucket strut to two support positioning shafts 3, and position the side plate against the positioning plate 17. At this time, the side plate is placed vertically. Weld the internal support plate to the positioned side plate. Then install and weld the other side plate with shaft holes at both ends. Finally, weld the edge plate to complete the production of the strut body.

[0044] When installing the synchronizing gear, two support seats 2 are installed on the two crossbeams 5 respectively. According to the end position relationship of the two grab bucket struts used to install the synchronizing gear, the distance between the two support seats 2 on the same crossbeam 5 is adjusted. Then, according to the length of the grab bucket strut, the distance between the two support seats 2 on the other crossbeam 5 is adjusted so that the distance between the two support seats 2 on the two crossbeams 5 used to connect the same grab bucket strut meets the length requirement of the grab bucket strut.

[0045] Then, a vertically positioned support positioning shaft 3 is threaded into the second threaded hole 15 of each support seat 2. The two grab bucket struts are installed between the support seats 2 on the two crossbeams 5 respectively. At this time, the side plates of the struts are placed horizontally. One synchronous tooth is manually placed on the outer circle of the end of the corresponding strut, adjusted and welded. Then, another synchronous tooth is manually placed on the outer circle of the end of the other strut, adjusted to effectively mesh with the fixed synchronous tooth, and then welded. This completes the installation of all synchronous teeth, resulting in higher efficiency and precision in the production of grab bucket struts.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A jig for manufacturing grab bucket struts, comprising: The base (1) is an I-shaped base, which includes a longitudinal beam (4) and a transverse beam (5). The crossbeam (5) has a first mounting hole (7) at the middle position. The first mounting hole (7) is detachably connected to a support seat (2) by bolts. The support seat (2) has a first threaded hole (14) arranged horizontally. The first threaded hole (14) is connected to a support positioning shaft (3). The support positioning shaft (3) includes a threaded part (16) and a support part (18). The threaded part (16) and the support part (18) are fixedly connected by a positioning plate (17). The threaded part (16) is threadedly connected to the first threaded hole (14). The support part (18) is used to be inserted into the shaft hole of the grab bucket support rod. The positioning plate (17) is used to fit and position against the side plate of the grab bucket support rod.

2. The jig for manufacturing grab bucket struts according to claim 1, characterized in that, The longitudinal beam (4) is provided with several second mounting holes (8) at intervals along its length. The second mounting holes (8) are used for detachable connection with the support base (2) by bolts.

3. The jig for manufacturing grab bucket struts according to claim 1, characterized in that, The crossbeam (5) is provided with several third mounting holes (9) at intervals along its length. The third mounting holes (9) are used for detachable connection with the support base (2) by bolts.

4. The jig for manufacturing grab bucket struts according to claim 1, characterized in that, The top of the support base (2) is provided with a second threaded hole (15), which is perpendicular to the first threaded hole (14). The second threaded hole (15) is used to connect with the support positioning shaft (3) by thread.

5. The jig for manufacturing grab bucket struts according to claim 4, characterized in that, Guide grooves (6) are provided on both the longitudinal beam (4) and the transverse beam (5), and the guide grooves (6) are slidably connected to the support base (2).

6. The jig for manufacturing grab bucket struts according to claim 5, characterized in that, The support base (2) includes a base plate (10), a guide block (12) that is slidably connected to the guide groove (6) is fixedly provided at the bottom of the base plate (10), a column (11) is fixedly provided on the base plate (10), a fourth mounting hole (13) is provided on the base plate (10), and the first threaded hole (14) and the second threaded hole (15) are both provided on the column (11).

7. The jig for manufacturing grab bucket struts according to claim 6, characterized in that, The column (11) is a rectangular column.

8. The jig for manufacturing grab bucket struts according to claim 1, characterized in that, A reinforcing plate (19) is fixed between the longitudinal beam (4) and the transverse beam (5).

9. The jig for manufacturing grab bucket struts according to claim 1, characterized in that, The end of the support part (18) is hemispherical.

10. The jig for manufacturing grab bucket struts according to claim 6, characterized in that, The cross-sections of both the guide groove (6) and the guide block (12) are rectangular.

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