Mounting and positioning device for center swivel joint of excavator

Abstract

The utility model provides an excavator center swivel joint installing and positioning device which comprises a positioning disc used for being connected with a swivel support of a swivel joint, a shaft hole penetrating through the thickness of the positioning disc is formed in the positioning disc, the shaft hole and the swivel support are coaxial, the shaft hole is used for being arranged on the swivel joint in a sleeved mode, and the positioning disc is used for being connected with the swivel support. The periphery of the shaft hole is provided with a plurality of screw head groove holes penetrating through the thickness of the shaft hole, the screw head groove holes correspond to the positions of a plurality of screw heads on the swivel joint respectively, and the screw head groove holes are communicated with the shaft hole. Based on the mounting and positioning device, the positioning accuracy and the positioning efficiency of the center swivel joint of the excavator can be improved, so that the mounting efficiency of the center swivel joint of the excavator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator assembly, in particular to an installation positioning device for the central swing joint of an excavator. Background Art

[0002] With the rapid development of construction machinery, the application range of excavators is becoming more and more extensive. Among them, the central swing joint, as an important part of the excavator, enables the excavator to have the ability to rotate during construction.

[0003] At present, for the installation of the central swing joint of an excavator, generally after the lower frame is installed to a certain extent, the lower end surface of the central swing joint is placed at the corresponding position on the lower frame. Due to reasons such as welding deformation of the main frame, the connecting surface on the lower frame often has a certain degree of deformation; and in order to ensure the rotational stability of the swing joint, it is necessary to ensure a high coaxiality between the swing joint and the swing support; in the prior art, in order to ensure the coaxiality between the swing joint and the swing support, it is necessary to manually measure the distance between the swing support and the swing joint multiple times to correct the position of the swing joint. Although this method can complete the positioning of the central swing joint during installation, due to the need for manual measurement, there are problems such as reading errors and long time spent on repeated measurement; therefore, in the prior art, when assembling the central swing joint of an excavator, there are problems of low positioning accuracy and low positioning efficiency of the central swing joint. Therefore, how to improve the positioning accuracy and positioning efficiency of the central swing joint, so as to improve the installation efficiency of the central swing joint of the excavator is a technical problem to be solved urgently. Summary of the Utility Model

[0004] In view of this, the embodiments of the present utility model provide an installation positioning device for the central swing joint of an excavator to eliminate or improve one or more defects existing in the prior art.

[0005] One aspect of the present utility model provides an installation positioning device for the central swing joint of an excavator, and the installation positioning device includes:

[0006] A positioning disk, used for connecting with the swing support of the swing joint. The positioning disk has an axial hole penetrating through its thickness, and the axial hole is coaxial with the swing support. The axial hole is used for sleeving on the swing joint. The outer periphery of the axial hole has a plurality of screw head slots penetrating through its thickness, and the plurality of screw head slots respectively correspond to the positions of a plurality of screw heads on the swing joint, and each screw head slot communicates with the axial hole.

[0007] In some embodiments of the present utility model, the installation positioning device includes a handle, and the handle is located on the side of the positioning disk away from the swing support.

[0008] In some embodiments of the present utility model, the number of the handles is multiple, and the multiple handles are symmetrically arranged with respect to the axis of the shaft hole.

[0009] In some embodiments of the present utility model, the positioning disk is a circular disk, and the shaft hole is coaxial with the positioning disk.

[0010] In some embodiments of the present utility model, a rabbet connection is provided between the positioning disk and the slewing bearing.

[0011] In some embodiments of the present utility model, a circular boss is provided on one side of the positioning disk close to the slewing bearing, and the circular boss is used to be arranged in the inner hole of the slewing bearing.

[0012] In some embodiments of the present utility model, the thickness of the positioning disk is greater than the thickness of the circular boss.

[0013] In some embodiments of the present utility model, the number of the screw head slots is five, and the five screw head slots are evenly and spaced along the outer circumference of the shaft hole.

[0014] In some embodiments of the present utility model, the handle is a U-shaped rod, and the two end portions of the vertical rods of the U-shaped rod are fixedly connected to the positioning disk.

[0015] In some embodiments of the present utility model, the ratio range of the diameter of the positioning disk to the diameter of the shaft hole is 3:1 to 5:1; and / or,

[0016] The ratio range of the diameter of the shaft hole to the thickness of the positioning disk is 3:1 to 9:1.

[0017] For the excavator center swivel joint installation and positioning device disclosed in the embodiments of the present utility model, the shaft hole in the positioning disk is sleeved on the swivel joint, and the positioning disk is also connected to the slewing bearing. Since the shaft hole is coaxial with the slewing bearing, the swivel joint and the slewing bearing can be quickly made coaxial based on this center swivel joint installation and positioning device, thereby realizing the rapid positioning of the swivel joint. This not only improves the positioning efficiency of the excavator center swivel joint, but also improves the positioning accuracy, thus improving the installation efficiency of the excavator center swivel joint and reducing the assembly cost of the excavator.

[0018] The additional advantages, objects, and features of the present utility model will be partially described below, and will become partially obvious to those of ordinary skill in the art after studying the following text, or can be learned from the practice of the present utility model. The objects and other advantages of the present utility model can be achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0019] Those skilled in the art will understand that the objectives and advantages achievable with the present utility model are not limited to those specifically described above, and the above and other objectives achievable with the present utility model will be more clearly understood based on the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present utility model, form a part of this application, and do not limit the present utility model. The components in the drawings are not drawn to scale, but are only for showing the principles of the present utility model. To facilitate showing and describing some parts of the present utility model, the corresponding parts in the drawings may be enlarged, that is, may become larger relative to other components in the exemplary device actually manufactured according to the present utility model. In the drawings:

[0021] Figure 1 FIG. is a schematic structural diagram of an installation and positioning device for a center swivel joint of an excavator according to an embodiment of the present utility model.

[0022] Figure 2 is Figure 1 a front view of the shown installation and positioning device.

[0023] Figure 3 FIG. is a reference diagram for the use of an installation and positioning device for a center swivel joint of an excavator according to an embodiment of the present utility model.

[0024] Figure 4 Figure 3 an exploded view corresponding to the shown reference diagram for use.

[0025] Reference numerals:

[0026] Positioning disk 100, shaft hole 110, screw head slot hole 120, handle 130, circular boss 140, swivel joint 200, swing support 300, lower carriage 400 DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. Here, the illustrative embodiments of the present utility model and their descriptions are used to explain the present utility model, but do not limit the present utility model.

[0028] Here, it should also be noted that, in order to avoid obscuring the present utility model with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present utility model are shown in the drawings, while other details less related to the present utility model are omitted.

[0029] It should be emphasized that when the term "comprising / including" is used herein, it refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0030] Here, it should also be noted that the orientation terms such as "left end" and "right end" in the content of this specification are relative to the position and direction shown in the drawings; if there is no special description, the term "connection" in this article can not only refer to direct connection, but also represent indirect connection with an intermediate object. Direct connection means that two components are connected without the aid of an intermediate component, and indirect connection means that two components are connected with the aid of other components.

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals represent the same or similar components.

[0032] Figure 1 It is a schematic structural diagram of an installation and positioning device for a center swing joint of an excavator according to an embodiment of the present invention, as Figure 1 shown, the installation and positioning device includes:

[0033] A positioning disk 100, which is used to connect with the swing support 300 of the swing joint 200. The positioning disk 100 has a shaft hole 110 penetrating through its thickness. The shaft hole 110 is coaxial with the swing support 300. The shaft hole 110 is used to sleeved on the swing joint 200. The outer periphery of the shaft hole 110 has a plurality of screw head slots 120 penetrating through its thickness, and the plurality of screw head slots 120 respectively correspond to the positions of a plurality of screw heads on the swing joint 200. Each of the screw head slots 120 is communicated with the shaft hole 110.

[0034] When the installation positioning device is specifically used, the bottom end face of the positioning disk 100 contacts the top end face of the slewing bearing 300. Since the shaft hole 110 on the positioning disk 100 is coaxial with the slewing bearing 300, the central slewing joint 200 after positioning and adjustment based on this installation positioning device is also coaxial with the slewing bearing 300. And after the position of the slewing joint 200 is determined based on this installation positioning device, an auxiliary support component such as a gasket can be further installed between the bottom end of the slewing joint 200 and the lower frame 400, and then the slewing joint 200 and the lower frame 400 are further connected to complete the assembly of the central slewing joint. In addition, after the slewing bearing 300 is fixed on the lower frame 400, the installation positioning device generally moves step by step from top to bottom along the height direction of the slewing joint 200 to the position of the slewing bearing 300 and is connected to the slewing bearing. Since there are generally multiple screw heads on the slewing joint 200, in order to prevent interference between the installation positioning device and the screw heads on the slewing joint 200 during movement, a plurality of screw head slots 120 are provided around the shaft hole 110 of the positioning disk 100, and the plurality of screw head slots 120 communicate with the shaft hole 110. In this embodiment, the positioning disk 100 can specifically be a metal disk, and its thickness is not specifically limited and can be set according to actual needs.

[0035] Further, in order to facilitate the disassembly of the installation positioning device, the installation positioning device includes a handle 130, and the handle 130 is located on a side of the positioning disk 100 away from the slewing bearing 300. From Figure 2 As can be seen from the illustrated embodiment, the handle 130 is located above the positioning disk 100, and the bottom of the positioning disk 100 is used to connect to the slewing bearing 300. In this embodiment, holding the handle 130 above the positioning disk 100 can detach the installation positioning device; in addition, the handle 130 can specifically be arranged outside the screw head slot 120.

[0036] In one embodiment, the number of handles 130 is multiple, and the multiple handles 130 are symmetrically arranged with respect to the axis of the shaft hole 110. In this embodiment, the multiple handles 130 are symmetrically arranged with each other. At this time, the multiple handles 130 are symmetrically arranged on both sides of the shaft hole 110, and the number of handles 130 is not specifically limited; for example, when the number of handles 130 is four, two handles 130 are respectively arranged on both sides of the shaft hole 110; and if the number of handles 130 is two, one handle 130 is respectively arranged on both sides of the shaft hole 110. In addition, in some embodiments, the multiple handles 130 can also be evenly and spaced along the outer circumference of the shaft hole 110. For example, when the number of handles 130 is three, the three handles 130 are evenly and spaced along the outer circumference of the shaft hole 110.

[0037] Further, the handle 130 may specifically be in the shape of a U-shaped rod. The ends of the two vertical rods of the U-shaped rod are fixedly connected to the positioning disc 100. As Figure 1 and Figure 2 shown, there are two handles 130 on the positioning disc 100. Both of the two handles 130 are located outside the screw head slot 120, and the two handles 130 are respectively located on both sides of the axis of the shaft hole 110. The U-shaped handle 130 includes a cross bar and two vertical rods located at both ends of the cross bar. The cross bar and the two vertical rods can be processed by an integral molding method. In this embodiment, the bottom ends of the vertical rods are connected to the positioning disc 100. Exemplarily, the vertical rods and the positioning disc 100 can be connected by bonding or welding. It can be understood that setting the handle 130 in the shape of a U is only a preferred example in this embodiment. In other embodiments, the handle 130 can also be in other shapes, such as a vertical rod shape, etc.

[0038] In one embodiment, the shape of the positioning disc 100 is circular. At this time, the positioning disc 100 is a circular disc, and the shaft hole 110 is coaxial with the positioning disc 100. In this embodiment, the sum of the radius of the shaft hole 110 and the dimension of the screw head slot 120 in the radial direction of the positioning disc 100 should be less than the radius of the positioning disc 100. And as Figure 3 shown, during the use of the installation positioning device in this embodiment, the positioning disc 100 is also coaxial with the slewing bearing 300, and the diameter of the positioning disc 100 is less than the diameter of the slewing bearing 300; in addition, the positioning disc 100 can be a metal disc, and the thickness of the positioning disc 100 is not specifically limited. In a specific embodiment, the ratio range of the diameter of the positioning disc 100 to the diameter of the shaft hole 110 can be set to 3:1 to 5:1, and the diameter dimension of the shaft hole 110 depends on the diameter dimension of the rotary joint 200. For example, when the diameter of the shaft hole 110 on the positioning disc 100 is 30 mm, the overall diameter dimension of the positioning disc 100 can be set between 90 mm and 150 mm; for the specific thickness of the positioning disc 100, if the value is too small, it is difficult to ensure the stability of the installation positioning device. Therefore, in some embodiments, the thickness of the positioning disc 100 can be determined based on the following conditions: the ratio range of the diameter of the shaft hole 110 to the thickness of the positioning disc 100 is 3:1 to 9:1. For example, when the diameter of the shaft hole 110 is 30 mm, the thickness of the positioning disc 100 is between 3.3 mm and 10 mm.

[0039] Further, in order to achieve a quick connection between the positioning disk 100 and the slewing bearing 300, a spigot connection is adopted between the positioning disk 100 and the slewing bearing 300. A spigot connection generally includes a male spigot and a female spigot. During assembly, the short cylinder of the male spigot closely fits with the short hole of the female spigot, so that the bottom end face of the positioning disk 100 closely fits with the top end face of the slewing bearing. In an embodiment, the male spigot is provided on the positioning disk 100, and the female spigot that mates with the male spigot is provided on the slewing bearing 300; similarly, the male spigot can also be provided on the slewing bearing 300, and the corresponding female spigot that mates with the male spigot is provided on the positioning disk 100.

[0040] In Figure 2 the shown installation positioning device, the male spigot is located on the positioning disk 100, while the female spigot is located on the slewing bearing 300. Refer to Figure 3 and Figure 4 the use reference diagram of the shown installation positioning device, then a circular boss 140 is provided on one side of the positioning disk 100 close to the slewing bearing 300. The circular boss 140 is used to be arranged in the inner hole of the slewing bearing 300. In this embodiment, the circular boss 140 serves as the male spigot, and the inner hole serves as the female spigot. Then, the cooperation between the circular boss 140 and the inner hole of the slewing bearing 300 realizes the spigot connection between the positioning disk 100 and the slewing bearing 300. It can be understood that in some embodiments, the spigot connection method between the positioning disk 100 and the slewing bearing 300 is only an example. In addition, other connection methods can also be adopted.

[0041] When the shape of the positioning disk 100 is circular, since the shaft hole 110 is coaxial with the positioning disk 100, a plurality of screw head slots 120 around the shaft hole 110 are evenly and spaced along the circumferential direction of the positioning disk 100. As Figure 1 shown, the number of the screw head slots 120 is five, and the five screw head slots 120 are evenly and spaced along the outer circumference of the shaft hole 110; specifically, the number and position of the screw head slots 120 can be set based on the number and position of the screw heads on the rotary joint 200, as long as it is ensured that when the rotary joint 200 is positioned based on this installation positioning device, interference between the positioning disk 100 and the screw heads on the rotary joint 200 can be effectively avoided.

[0042] In addition, when the convex stop with the shape of the circular boss 140 is located at the bottom of the positioning disk 100, the thickness of the positioning disk 100 is set to be greater than the thickness of the circular boss 140. Exemplarily, the ratio of the thickness of the positioning disk 100 to the thickness of the circular boss 140 can be set to 3:1 to 6:1. For example, when the thickness of the positioning disk 100 is 30 mm, the thickness range of the circular boss 140 is 5 mm to 10 mm. It can be understood that the thicknesses of the circular boss 140 and the positioning disk 100 defined in this embodiment are both examples, and can be specifically set according to actual needs.

[0043] In the excavator center swivel joint installation positioning device disclosed in the above embodiment, during use, first place the lower end of the center swivel joint at the corresponding position of the lower frame 400, and the top of the swivel joint is higher than the slewing bearing. At this time, sleeved the shaft hole 110 of the installation positioning device on the outside of the swivel joint, and move the installation positioning device from top to bottom from the top of the swivel joint, and make the circular boss 140 of the installation positioning device form a stop connection with the inner hole of the slewing bearing. In this state, the swivel joint and the slewing bearing are coaxial, and then connect the bottom end of the swivel joint to the top end of the upper frame based on auxiliary adjusting devices such as gaskets. Therefore, based on this installation positioning device, the positioning of the swivel joint during the installation process can be quickly realized, thus improving the positioning efficiency of the swivel joint.

[0044] It can be found through the above embodiment that in the excavator center swivel joint installation positioning device disclosed in the embodiment of the present invention, the shaft hole in the positioning disk is sleeved on the swivel joint, and the positioning disk is also connected to the slewing bearing. Since the shaft hole and the slewing bearing are coaxial, based on this center swivel joint installation positioning device, the swivel joint and the slewing bearing can be quickly made coaxial, thus realizing the quick positioning of the swivel joint. This not only improves the positioning efficiency of the center swivel joint of the excavator, but also improves the positioning accuracy, thereby improving the installation efficiency of the excavator center swivel joint and reducing the assembly cost of the excavator. In addition, this installation positioning device has a simple structure, is convenient to use, and has a low manufacturing cost.

[0045] In the present invention, features described and / or illustrated for one embodiment can be used in the same or similar manner in one or more other embodiments, and / or combined with the features of other embodiments or replace the features of other embodiments.

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the embodiments of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An installation positioning device for the center swivel joint of an excavator, characterized in that The installation and positioning device includes: A positioning disk for connecting with the rotary support of the rotary joint. The positioning disk has a shaft hole penetrating through its thickness, and the shaft hole is coaxial with the rotary support. The shaft hole is used to sleeve on the rotary joint. The outer periphery of the shaft hole has a plurality of screw head slot holes penetrating through its thickness, and the plurality of screw head slot holes respectively correspond to the positions of a plurality of screw heads on the rotary joint. Each screw head slot hole communicates with the shaft hole.

2. The installation and positioning device for the center swivel joint of an excavator according to claim 1, wherein The installation and positioning device includes a handle, and the handle is located on the side of the positioning disk away from the rotary support.

3. The installation and positioning device for the center swivel joint of an excavator according to claim 2, characterized in that, The number of the handles is multiple, and the multiple handles are symmetrically arranged with respect to the axis of the shaft hole.

4. The installation and positioning device for the center swivel joint of an excavator according to claim 1, characterized in that, The positioning disk is a circular disk, and the shaft hole is coaxial with the positioning disk.

5. The installation and positioning device for the center swivel joint of an excavator according to claim 4, characterized in that, A stop connection is provided between the positioning disk and the rotary support.

6. The installation and positioning device for the center swivel joint of an excavator according to claim 5, characterized in that, A circular boss is provided on the side of the positioning disk close to the rotary support, and the circular boss is used to be arranged in the inner hole of the rotary support.

7. The installation and positioning device for the center swivel joint of an excavator according to claim 6, characterized in that, The thickness of the positioning disk is greater than the thickness of the circular boss.

8. The excavator center swivel joint installation positioning device according to claim 1, characterized in that The number of the screw head slot holes is five, and the five screw head slot holes are evenly and spacedly arranged along the outer periphery of the shaft hole.

9. The installation and positioning device for the center swivel joint of an excavator according to claim 3, characterized in that, The handle is in a U-shaped rod shape, and the two end portions of the vertical rods of the U-shaped rod are fixedly connected to the positioning disk.

10. The excavator center swivel joint installation and positioning device according to any one of claims 4 to 7, characterized in that The ratio range of the diameter of the positioning disk to the diameter of the shaft hole is from 3:1 to 5:1; and / or, The ratio range of the diameter of the shaft hole to the thickness of the positioning disk is from 3:1 to 9:1.

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