Quick-change splicing point positioning device for excavator

Abstract

The utility model belongs to the technical field of positioning tools, and particularly discloses a quick-change splicing point positioning device for an excavator. Comprising a bottom plate, a supporting device, a positioning device, a limiting assembly and positioning pins, the supporting device, the positioning device and the limiting assembly are installed on the bottom plate, the positioning pins are installed on the limiting assembly and the positioning device, the limiting assembly is used for preventing position deviation of the excavator quick-changing device on the bottom plate, and the positioning device is used for positioning the excavator quick-changing device on the bottom plate. The limiting assembly comprises a first limiting piece, a second limiting piece and a third limiting piece, and the first limiting piece, the second limiting piece and the third limiting piece are all fixed to the bottom plate through bolts. In the practical application, the excavator quick-changing device is used for splicing point positioning of the excavator quick-changing device through the positioning device, the limiting assembly and the supporting device, and the device is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of positioning tooling, and specifically discloses a quick-change splicing point positioning device for an excavator. Background Art

[0002] In the current construction machinery field, especially in the application of excavator operations, the quick-change system has become one of the key technologies to improve operation flexibility and economic benefits. This system allows the excavator to quickly replace different functional attachments, such as buckets, breaker hammers, etc., without complex tools and a large amount of downtime, thus greatly enhancing the diversity and efficiency of operations, while effectively reducing maintenance and replacement costs. However, the core component of the quick-change system - the quick-change main body, due to its high structural complexity and strict dimensional precision requirements, poses significant challenges to the manufacturing process. In the absence of suitable auxiliary tools, not only is it difficult to achieve the clamping and precise positioning of the product, but also the difficulty and error rate of the welding process increase significantly, which directly restricts production efficiency and product quality.

[0003] A splicing point tooling for the lower part of an excavator quick-change with the patent application number CN210306472U includes a bottom plate. The front and rear sides of the upper end of the bottom plate are respectively provided with a front plate positioning device and a rear plate positioning device. The left and right sides of the upper end of the bottom plate are symmetrically provided with side plate positioning devices at positions between the front plate positioning device and the rear plate positioning device; a reinforcing rib positioning plate is arranged at a position between the two side plate positioning devices at the rear side of the front plate positioning device, and a rear plate support plate is arranged at a position between the two side plate positioning devices at the front side of the rear plate positioning device; the side plate positioning device includes a side plate positioning plate and a vertical quick clamp and a horizontal quick clamp arranged outside the side plate positioning plate. Positioning shafts are connected between the front and rear ends of the two side plate positioning plates. The above device positions the excavator quick-change through the front plate, rear plate positioning devices and side plate positioning devices, and cannot position the upper part of the excavator quick-change, and this tooling is not convenient to move. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that in the above-mentioned prior art, the splicing point tooling for the excavator quick-change cannot position the upper part of the excavator quick-change, and this splicing point tooling for the excavator quick-change is not convenient to move.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An excavator quick-change splicing positioning device, comprising a bottom plate, a support device, a positioning device, a limiting component and a tightening device. The support device, the positioning device and the limiting component are installed on the bottom plate. Positioning pins are installed on the limiting component and the positioning device. The limiting component is used to prevent the excavator quick-change device from shifting in position on the bottom plate. The limiting component includes a first limiting member, a second limiting member and a third limiting member. The first limiting member, the second limiting member and the third limiting member are all fixed to the bottom plate by bolts. The tightening device is installed at both ends of the bottom plate.

[0007] Further, the support device is installed on the bottom plate through a support pin shaft. The support pin shaft drives the support device to move up and down through rotation, realizing the supporting effect of the support device on the excavator quick-change. The pin shaft connection method allows the support device to move freely up and down in the vertical direction, which means that the operator can easily adjust the support height according to actual needs to adapt to different sizes or shapes of excavator quick-change devices, improving the versatility and application range of the device. By rotating the pin shaft to adjust the height of the support device, precise support for the excavator quick-change device can be achieved, ensuring its stability and balance during the splicing process, helping to improve the splicing accuracy, reducing deformation or assembly errors caused by improper support. Rotating the pin shaft is a simple and direct adjustment method. The operator can quickly adjust the position of the support device without complex tools, reducing the operation difficulty, improving the work efficiency, and at the same time reducing the time consumption during the assembly process. The pin shaft structure is simple, easy to disassemble and reinstall, facilitating daily maintenance and regular inspection, ensuring that the support device always maintains a good working state, and extending the service life of the entire positioning device.

[0008] Further, the tightening device includes a first tightening device and a second tightening device. The first tightening device is fixed to the bottom plate by a pin shaft, and the second tightening device is fixed to the bottom plate by bolts.

[0009] The first clamping device is fixed by a pin, which can ensure stable and reliable support during the clamping process, prevent the quick-change device from sliding or shifting during assembly, and improve work safety. The second clamping device is fixed by bolts to further strengthen the overall structure, ensure a stable clamping effect, and reduce work risks. The use of pins allows the first clamping device to adjust its position within a certain range to accommodate quick-change parts of different sizes or shapes, providing a wider range of adaptability and flexibility. The second clamping device fixed by bolts ensures the firmness of the fixing point. The combination of the two is flexible and can ensure tightness. The pin structure is convenient for quick disassembly and adjustment, simplifying the maintenance and replacement process. Bolt fixing provides a more stable installation method, which is convenient for precise adjustment and tightening. The combination of the two methods optimizes the convenience of maintenance operations. The dual design of the clamping device (pin and bolt fixing) makes the operation faster and easier during installation, adjustment and locking, reducing assembly time and improving overall work efficiency.

[0010] Furthermore, the positioning device includes a positioning groove and a positioning rod, the positioning groove is V-shaped as a whole, a buffer block is arranged on the positioning groove, the positioning rod is located above the positioning groove, the positioning rod is fixed to the positioning device through a positioning pin, and a support member is also arranged at the head end of the positioning rod, and the support member is used to support the positioning rod.

[0011] The design of the V-shaped positioning groove can adapt to and guide the positioning rod well, ensuring that during the assembly process, the quick-change parts can be quickly and accurately aligned to the predetermined position, improving the accuracy and efficiency of assembly. The buffer block arranged on the positioning groove can play a shock-absorbing and buffering role when the positioning rod contacts the positioning groove, reducing the wear caused by direct hard contact, extending the service life of the positioning device, and reducing the noise during operation. The positioning rod is fixed to the positioning device by a pin shaft. This design not only facilitates the adjustment of the position of the positioning rod, but also ensures its stability in the working state, and prevents displacement when subjected to external force. The support at the head end of the positioning rod further enhances the stability of the positioning rod, especially when subjected to greater pressure or impact force. It can effectively disperse the load and prevent the positioning rod from bending or damage, thereby ensuring the reliability of the entire positioning system.

[0012] Furthermore, the first limiting member, the second limiting member and the third limiting member are all provided with rubber pads, and the third limiting member is provided with the positioning pin.

[0013] The use of the rubber pad increases the friction between the limiting member and the contact surface of the quick-change device, effectively preventing sliding caused by vibration or external force during operation, ensuring the stability and accuracy of the limit. This is crucial for keeping the quick-change device in the correct position, avoiding assembly errors or safety accidents caused by displacement. As a soft material, the rubber pad can play a buffering role during the limiting process, reducing direct collision and friction between metals, protecting the surface of the quick-change device from damage, and also protecting the limiting member itself from wear, extending the service life of the entire device. The positioning pin design on the third limiting member ensures the precise positioning of the quick-change device during assembly. The positioning pin matches the corresponding hole positions on the quick-change device, can be quickly and accurately aligned, simplifies the assembly steps, improves work efficiency, and also avoids the error of manual alignment, enhancing the assembly accuracy of the finished product. The rubber pad also has good shock absorption and sound insulation effects, can effectively absorb the vibration and noise during assembly, create a quieter and more comfortable working environment, reduce the fatigue of operators, and improve the operation quality.

[0014] Furthermore, a plurality of cushion blocks are arranged on the bottom plate. The cushion blocks are made of rubber. A foot pad is further arranged at the bottom of the bottom plate. A plurality of lifting lugs are also arranged on the bottom plate. The foot pad is welded to the bottom of the bottom plate, and the lifting lugs are fixed to the bottom plate by bolts.

[0015] The setting of the rubber cushion blocks increases the friction between the bottom plate and the ground contact surface, effectively preventing the sliding of the equipment during operation. Especially when operating on an uneven or smooth ground, it can significantly improve the stability of the equipment and reduce the risk of accidental movement. The cushion blocks and foot pads made of rubber have good shock absorption performance, can absorb and weaken the vibration and noise generated during the operation of the equipment, provide a quieter and more comfortable working environment for the operator, and at the same time protect the equipment from vibration damage and extend the service life. The rubber cushion blocks and foot pads can effectively prevent the hard bottom plate from directly contacting the ground, preventing scratching or damaging the ground material of the work site, which is particularly important for sensitive or protected ground. The lifting lug design on the bottom plate enables the equipment to be easily lifted by a crane or a hook, facilitating the handling, installation or storage of the equipment. Especially when it is necessary to frequently change the work location or conduct large-scale equipment assembly, it greatly improves the operation flexibility and efficiency. The cushion blocks can be adjusted individually as needed to help the equipment achieve a better level state on uneven ground, which is crucial for ensuring the accuracy and stability of the quick-change splicing point positioning device.

[0016] The utility model has the following beneficial effects:

[0017] 1. By integrating a positioning device and a limiting component on the bottom plate and installing positioning pins on these components, it is possible to ensure the precise alignment of the excavator quick-change device during the assembly process, reduce dimensional errors caused by inaccurate positioning, and improve the assembly accuracy and overall performance of the final product.

[0018] 2. The limiting component (including the first limiting piece, the second limiting piece, and the third limiting piece) is fixed to the bottom plate by bolts, effectively preventing unnecessary movement or inclination of the quick-change device during the assembly operation, enhancing the stability of the overall structure, and ensuring the safety and continuity of the assembly operation.

[0019] 3. By installing a lifting lug on the bottom plate, it is convenient to move the device to the designated position with the help of a crane, improving the flexibility of the device. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present utility model.

[0021] Figure 2 is a schematic structural diagram of the present utility model for positioning the excavator quick-change.

[0022] Figure 3 is a schematic structural diagram of the positioning device of the present utility model.

[0023] Figure 4 is a schematic structural diagram of the third limiting piece of the present utility model.

[0024] Among them: 1 - bottom plate; 11 - foot; 12 - lifting lug; 13 - cushion block; 2 - tightening device; 21 - first tightening device; 22 - second tightening device; 3 - positioning pin; 4 - limiting component; 41 - first limiting piece; 42 - second limiting piece; 43 - third limiting piece; 5 - supporting device; 51 - supporting pin shaft; 6 - positioning device; 61 - positioning groove; 611 - buffer block; 62 - positioning rod; 63 - positioning pin shaft; 7 - excavator quick-change. Detailed Embodiment

[0025] The following further describes the present utility model in detail in conjunction with the drawings and specific preferred embodiments.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "left side", "right side", "upper part", "lower part", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not represent the importance of the components, so they cannot be understood as limitations to the present utility model. The specific dimensions adopted in this embodiment are only for illustrating the technical solution and do not limit the protection scope of the present utility model.

[0027] Referring to Figure 1 and the figures, it can be seen that a quick-change and alignment positioning device for an excavator includes a bottom plate 1 at the bottom of the device. Four feet 11 are welded to the bottom of the bottom plate 1. Four lifting lugs 12 are installed on the bottom plate 1 by bolts. Four cushion blocks 13 are also provided on the bottom plate 1. A tightening device 2, a limiting component 4, a supporting device 5, and a positioning device 6 are installed on the bottom plate 1 by bolts. Among them, the tightening device 2 includes a first tightening device 21 and a second tightening device 22. The first tightening device 21 is fixed to the bottom plate 1 by a strut. The second tightening device 22 is fixed to the bottom plate 1 by bolts. A first limiting member 41, a second limiting member 42, and a third limiting member 43 are fixed to the bottom plate 1 by bolts. A positioning pin 3 is provided on the first limiting member 41, and rubber pads are provided on the first limiting member 41, the second limiting member 42, and the third limiting member 43. The positioning device 6 is fixed to the bottom plate 1 by a support column.

[0028] In one embodiment, four feet 11 are welded at a predetermined position on the bottom plate 1. The feet 11 are used to improve the stability of the bottom plate 1. During welding, it is necessary to ensure that the welds are firm and evenly distributed. Four lifting lugs 12 are fixed to the predetermined position on the bottom plate 1 using suitable bolts and nuts. The lifting lugs 12 are used for hoisting the entire device. During installation, it is necessary to ensure that the fastener specifications match and the tightening force is appropriate to prevent over-tightening or over-loosening. Four cushion blocks 13 are placed on the bottom plate 1 according to the design requirements. The cushion blocks 13 are generally made of rubber and are used for shock absorption and protecting the bottom plate. Pay attention to the symmetrical position during placement to ensure overall balance. The first tightening device 21 is connected to the bottom plate 1 by a strut. It is necessary to ensure that the strut is firmly fixed to the tightening device 21. The second tightening device 22 is directly fixed to the bottom plate 1 by bolts. Ensure that the bolts are tightened during installation to avoid loosening during operation. The limiting component 4 (including the first limiting member 41, the second limiting member 42, and the third limiting member 43) is fixed to the bottom plate 1 by bolts. Ensure that the positioning pin 3 is correctly aligned with the positioning hole of the first limiting member 41. The contact surface should be cleaned before installing the rubber pads on the limiting component 4. The supporting device 5 is installed at a predetermined position and is connected to the bottom plate 1 through a support column. The supporting device 5 needs to be adjusted to a position where it can stably support the quick-change component. The positioning device 6 is fixed to the bottom plate 1 through a support column to ensure accurate positioning and effectively guide the installation of the quick-change component;

[0029] The positioning device 5 is tangent to the axial surface of the quick coupler 7 of the excavator. The positioning pin 3 and the positioning rod 62 rotate to achieve the positioning function, and the quick coupler 7 of the excavator is placed in the positioning groove 61. The positioning rod 62 rotates to press the axial surface of the quick coupler 7 of the excavator. The first tightening device 21 rotates to quickly tighten the quick coupler 7 of the excavator, and the second tightening device 22 prevents loosening after tightening. The support device 5 is in clearance fit with the cushion block 13 at the bottom, and tightening the support pin shaft 51 can achieve the supporting effect on the quick coupler 7 of the excavator. The limiting component 4 positions the quick coupler 7 of the excavator. The limiting component 4 can be turned around the axis, and when working, it is turned to the position parallel to the product, and when the operation is completed, it can be turned to the vertical position, which does not interfere with the product and does not need to be disassembled, saving the operator's time and improving work efficiency. The first limiting part 41 positions the side surface of the quick coupler 7 of the excavator through the positioning pin shaft 63.

[0030] Referring to Figure 3 , it can be seen that the positioning device 6 includes a positioning groove 61, a buffer block 611, a positioning rod 62 and a positioning pin shaft 63. The positioning groove 61 is V-shaped as a whole. A connecting rod buffer block 611 is arranged in the positioning groove 61. A positioning rod 62 is arranged above the positioning groove 61. The positioning rod 62 is fixed on the positioning device 6 through the positioning pin shaft 63, and a support bolt is also arranged at the head end of the positioning rod 62.

[0031] In one embodiment, the position of the positioning groove 61 is accurately calibrated at a predetermined position of the positioning device 6 to ensure its correct alignment relative to the quick coupler 7 of the excavator. A V-shaped positioning groove 61 is machined on the positioning device 6 using a machine tool. The buffer block 611 is placed in a pre-designed groove or fixed position in the positioning groove 61. The material of the buffer block 611 is usually selected as wear-resistant and shock-absorbing rubber or plastic, which is used to absorb impact and reduce wear to ensure that the buffer block 611 is firmly fixed. The positioning rod 62 is aligned with the reserved position above the positioning device 6, and the positioning rod 62 is fixed on the positioning device 6 through the positioning pin shaft 63. A support bolt is installed at the head end of the positioning rod 62 to provide additional supporting force and stability, especially when the positioning rod bears a large tightening force or operating force;

[0032] When positioning the quick coupler 7 of the excavator, first place the quick coupler 7 of the excavator in the positioning groove 61, rotate the positioning rod 62 through the positioning pin shaft 63, align the positioning rod 62 with the positioning groove 61 to achieve the top position of the upper part of the quick coupler 7 of the excavator. After the positioning rod 62 is aligned, rotate the support bolt to ensure that the support bolt contacts the positioning device 6, which plays an auxiliary supporting and positioning role for the positioning rod 62.

[0033] Referring to Figure 4 , it can be seen that the third limiting part 43 is fixed on the bottom plate 1 through bolts, and a positioning pin 3 is also arranged on the third limiting part 43.

[0034] In one embodiment, after the initial positioning of the excavator quick coupler 7 by the positioning device 6, the front and rear parts of the excavator quick coupler 7 are fixed by the first tightening device 21 and the second tightening device 22. When the limiting component 4 rotates to the side wall of the excavator quick coupler 7, the positioning pin 3 on the third limiting member 43 is adjusted to further clamp the excavator quick coupler 7 by the third limiting member 43, and the excavator quick coupler 7 is fixed on the bottom plate 1.

[0035] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A quick-change joint point positioning device for an excavator, characterized in that: It includes a base plate, a supporting device, a positioning device, a limiting assembly and a tightening device, the supporting device, the positioning device and the limiting assembly are installed on the base plate; positioning pins are installed on the limiting assembly and the positioning device, the limiting assembly is used to prevent the excavator quick-change device from shifting position on the base plate, the limiting assembly includes a first limiting member, a second limiting member and a third limiting member, the first limiting member, the second limiting member and the third limiting member are all fixed to the base plate by bolts, and the tightening device is installed at both ends of the base plate.

2. The excavator quick-change joint point positioning device according to claim 1, characterized in that: The support device is installed on the bottom plate through a support pin shaft, and the support pin shaft drives the support device to move up and down by rotating, so as to realize the supporting effect of the support device on the quick change of the excavator.

3. The quick-change joint point positioning device for an excavator according to claim 1, characterized in that: The jacking device comprises a first jacking device and a second jacking device, wherein the first jacking device is fixed to the bottom plate via a pin, and the second jacking device is fixed to the bottom plate via a bolt.

4. The quick-change joint point positioning device for an excavator according to claim 1, characterized in that: The positioning device includes a positioning groove and a positioning rod. The positioning groove is V-shaped as a whole. A buffer block is arranged on the positioning groove. The positioning rod is located above the positioning groove. The positioning rod is fixed to the positioning device through a positioning pin. A support member is also arranged at the head end of the positioning rod, and the support member is used to support the positioning rod.

5. The quick-change joint point positioning device for an excavator according to claim 1, characterized in that: The first limiting member, the second limiting member and the third limiting member are all provided with rubber pads, and the third limiting member is provided with the positioning pin.

6. The quick-change joint point positioning device for an excavator according to claim 1, characterized in that: The bottom plate is provided with a plurality of pads, the pads are made of rubber, the bottom of the bottom plate is provided with pads, the bottom of the bottom plate is provided with a plurality of ears, the pads are welded to the bottom of the bottom plate, and the ears are fixed to the bottom plate by bolts.

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