An expansion assembly for a rubber seal sleeve

Abstract

The utility model relates to the technical field of petroleum drilling and exploitation screw rod drilling tools, and specifically relates to an expansion assembly device for rubber sealing sleeve. The expansion assembly device comprises: a positioning disc movably installed on a mounting bracket, the positioning disc is provided with an expansion assembly for expanding the rubber sealing sleeve, the positioning disc can rotate around the center to adjust the posture of the expansion assembly to align with the spline tooth groove; a driving assembly is installed on the mounting bracket, the driving assembly is connected with the expansion assembly, and the driving assembly is used to drive the expansion assembly to perform the distraction action or the closing action. The expansion assembly driven to open and close is arranged in the application, the posture of the expansion assembly is positioned by cooperating with the positioning disc, the support rod on the chuck is aligned with the spline tooth groove of the universal shaft head, the demand of quick nondestructive assembly is satisfied, the complexity of manual operation and the time consumption are reduced, the work efficiency is improved, the labor intensity is reduced, and remarkable benefits are brought to the assembly and quality control of the rubber sealing sleeve.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling screw drill bit technology, specifically to an expansion assembly device for a rubber sealing sleeve. Background Technology

[0002] Rubber sealing sleeves are a special material used for sealing. They are elastic and are an indispensable part in the sealing universal joint assembly used in oil drilling screw tools. They can play a sealing role, ensuring that mud and other debris do not enter the friction surface of the spline (or teeth) during use, reducing the wear of important components such as the universal joint spline (or teeth), and extending the service life of the universal joint.

[0003] In related technologies, during the traditional assembly process of rubber seal sleeves, because the diameter of the small end of the rubber seal sleeve is much smaller than the diameter of the large end of the spline shaft, assembly is usually carried out manually by inserting multiple small steel rods into several spline grooves of the universal joint to continuously expand the rubber seal sleeve and push it into the spline shaft. However, this manual assembly method is not only slow, but also increases the labor intensity and labor costs of the operators. At the same time, manual operation cannot precisely control the expansion size and uniformity, and the rubber seal sleeve is easily damaged during assembly, which greatly reduces work efficiency and the quality of the assembled parts. Utility Model Content

[0004] In related technologies, manual operation cannot accurately control the expansion size and uniformity, and the rubber sealing sleeve is easily damaged during assembly, which greatly reduces work efficiency and the quality of assembled parts.

[0005] In a first aspect, embodiments of this application provide an expansion assembly device for a rubber sealing sleeve, comprising: a mounting bracket, a positioning plate, and a drive assembly; wherein,

[0006] A positioning plate is movably mounted on the mounting bracket. The positioning plate is provided with an expansion component for expanding the rubber sealing sleeve. The positioning plate can rotate around its center to adjust the posture of the expansion component to align with the spline groove.

[0007] A drive assembly is mounted on the mounting bracket and is connected to the expansion assembly. The drive assembly is used to drive the expansion assembly to perform an opening or closing action.

[0008] In conjunction with the first aspect, in one embodiment, the mounting bracket is provided with a crossed roller bearing, the inner ring of the crossed roller bearing is rotatable relative to its outer ring, the outer ring of the bearing is fixedly connected to the mounting bracket, and the inner ring of the bearing is connected to the positioning plate.

[0009] In conjunction with the first aspect, in one embodiment, the driving component includes:

[0010] A speed reducer is mounted on the mounting bracket, and the output shaft of the speed reducer is connected to a coupling, which passes through the crossed roller bearing and is connected to the expansion assembly.

[0011] A drive motor, which is connected to the reducer, can drive the expansion assembly to perform an opening or closing action via the coupling.

[0012] In conjunction with the first aspect, in one embodiment, the drive assembly further includes: a motor mounting base mounted on the side of the mounting bracket away from the positioning plate, the motor mounting base mounting the reducer and the drive motor, and the motor mounting base having a bearing mounting surface connected to the inner ring of the bearing.

[0013] In conjunction with the first aspect, in one embodiment, the expansion component includes:

[0014] A chuck is provided with multiple jaws and a drive shaft, the drive shaft being used to drive the multiple jaws to move, and the drive shaft being connected to the coupling;

[0015] Multiple support rods, the number of which corresponds to the number of the claw portions, and each support rod is mounted on one of the claw portions.

[0016] In conjunction with the first aspect, in one embodiment, the mounting bracket is provided with a limiting groove, the positioning plate is provided with a limiting post, the limiting post is located in the limiting groove, and the limiting post can move in the limiting groove as the positioning plate rotates.

[0017] In conjunction with the first aspect, in one embodiment, the positioning disk is provided with a handle.

[0018] In conjunction with the first aspect, in one embodiment, it further includes: a guide rail and a slider; wherein,

[0019] A slider is movably mounted on the guide rail, and the mounting bracket is supported on the slider. The slider can reciprocate along the guide rail.

[0020] In conjunction with the first aspect, in one embodiment, a limiting block is mounted on the guide rail, the limiting block being used to restrict the movement range of the slider.

[0021] In conjunction with the first aspect, in one embodiment, it further includes: a drive cylinder connected to the mounting bracket, the drive cylinder being used to drive the mounting bracket and the slider to move along the guide rail.

[0022] The beneficial effects of the technical solutions provided in this application include at least the following:

[0023] This application sets up an expansion component that can be driven to open and close, and uses a positioning plate to position the expansion component's posture, so that the support rod on the chuck is aligned with the spline groove of the universal joint head. This meets the requirements for rapid and non-destructive assembly, reduces the complexity and time consumption of manual operation, thereby improving work efficiency, reducing labor intensity, and bringing significant benefits to the assembly and quality control of rubber sealing sleeves. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the expansion assembly device in an embodiment of this application;

[0026] Figure 2 This is an exploded view of the expansion assembly device in an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the structure of the motor mounting base in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram of the structure of the crossed roller bearing in the embodiments of this application;

[0029] Figure 5 This is a schematic diagram of the mounting bracket in an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the positioning disk in an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the chuck structure in an embodiment of this application;

[0032] Figure 8 This is a schematic diagram of the support rod structure in an embodiment of this application;

[0033] Figure 9 This is a schematic diagram of the structure of the limiting block in an embodiment of this application.

[0034] In the diagram: 1. Mounting bracket; 11. Crossed roller bearing; 111. Bearing outer ring; 112. Bearing inner ring; 12. Limiting groove; 14. Outer ring fixing surface; 2. Positioning plate; 21. Limiting post; 22. Handle; 23. Positioning surface; 24. Fixing surface; 31. Chuck; 311. Chuck portion; 3111. Drive chuck; 3112. Pad; 312. Drive shaft; 32. Support rod; 4. Reducer; 41. Coupling; 5. Drive motor; 6. Motor mounting base; 61. Bearing mounting surface; 62. Motor mounting surface; 7. Guide rail; 71. Slider; 72. Slide base plate; 8. Limiting block; 9. Drive cylinder. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0036] In related technologies, manual operation cannot accurately control the expansion size and uniformity, and the rubber sealing sleeve is easily damaged during assembly, which greatly reduces work efficiency and the quality of assembled parts.

[0037] Firstly, such as Figure 1 and Figure 2 As shown, this application provides an expansion assembly device for a rubber sealing sleeve, which includes: a mounting bracket 1, a positioning plate 2, and a drive assembly; wherein,

[0038] The positioning disk 2 is movably mounted on the mounting bracket 1. The positioning disk 2 is provided with an expansion component for expanding the rubber sealing sleeve. The positioning disk 2 can rotate around its center to adjust the posture of the expansion component to align with the spline groove. The driving component is mounted on the mounting bracket 1 and is connected to the expansion component. The driving component is used to drive the expansion component to perform an opening or closing action.

[0039] It is worth noting that this application uses a drive component to drive the expansion of the rubber sealing sleeve, replacing manual operation and thus enabling precise control of the expansion dimensions. Furthermore, this application utilizes the positioning disc 2 to precisely control the orientation of the expansion component, facilitating alignment with the spline grooves of the universal joint head, meeting the requirements for rapid and non-destructive assembly, reducing the complexity and time consumption of manual operation, thereby improving work efficiency, reducing labor intensity, and bringing significant benefits to the assembly and quality control of the rubber sealing sleeve.

[0040] In some preferred embodiments, the mounting bracket 1 is provided with a crossed roller bearing 11, the inner ring 112 of the crossed roller bearing 11 is rotatable relative to its outer ring 111, the outer ring 111 is fixedly connected to the mounting bracket 1, and the inner ring 112 is connected to the positioning plate 2.

[0041] It is worth noting that this application utilizes the crossed roller bearing 11 to integrate the positioning disc 2 onto the mounting bracket 1, which saves space for the entire device and improves the product integration while ensuring the rotational adjustment function of the positioning disc 2.

[0042] Specifically, such as Figure 4 As shown, the crossed roller bearing 11 includes an outer ring 111 and an inner ring 112, wherein the outer ring 111 is fixedly connected to the mounting bracket 1, and the inner ring 112 is fixedly connected to the positioning plate 2.

[0043] It is understandable that when the positioning disk 2 rotates, it can drive the inner ring 112 of the bearing to rotate as well, thereby completing the integrated setup of the positioning disk 2 without affecting its rotation function.

[0044] In some preferred embodiments, such as Figure 5 As shown, the mounting bracket 1 is provided with a limiting groove 12, and the positioning plate 2 is provided with a limiting post 21. The limiting post 21 is located in the limiting groove 12, and the limiting post 21 can move in the limiting groove 12 as the positioning plate 2 rotates.

[0045] Optionally, the limiting post 21 is located on the lower end face of the positioning plate 2.

[0046] It is worth noting that the limiting groove 12 is set along the circumference of the steering wheel to limit the movement range of the limiting post 21, thereby limiting the rotation of the positioning disk 2.

[0047] Optionally, to facilitate operators in adjusting the posture of the expansion components, the positioning disk 2 is provided with a handle 22.

[0048] Understandably, during use, it is necessary to manually turn the handle 22 to drive the positioning plate 2 to rotate. By utilizing the rotatable characteristic of the crossed roller bearing, it is ensured that the six sets of support rods 32 correspond to the six sets of spline tooth grooves, making it possible for the rubber sealing sleeve to open the spline tooth end of the universal joint for feeding.

[0049] Furthermore, such as Figure 6 As shown, the positioning disk 2 includes a positioning surface 23 and a fixing surface 24, with the fixing surface 24 fixedly connected to the inner ring 112 of the bearing. The positioning surface 23 is fixedly connected to the expansion assembly.

[0050] In some specific embodiments, the drive assembly includes: a speed reducer 4 and a drive motor 5; wherein,

[0051] A speed reducer 4 is mounted on the mounting bracket 1. The output shaft of the speed reducer 4 is connected to a coupling 41, which passes through the crossed roller bearing 11 and is connected to the expansion assembly. A drive motor 5 is connected to the speed reducer 4. The drive motor 5 can drive the expansion assembly to perform an opening or closing action through the coupling 41.

[0052] It is worth noting that in this application, the drive motor 5 and the reducer 4 are fitted together. Furthermore, this application utilizes the crossed roller bearing 11 to fulfill the rotation function of the positioning disc 2, and its bearing bore allows the coupling 41 to pass through and connect to the expansion assembly. This integrates the expansion assembly and the drive assembly on both sides of the mounting bracket 1, further improving the overall integration.

[0053] Furthermore, such as Figure 3 As shown, the drive assembly further includes a motor mounting base 6, which is mounted on the side of the mounting bracket 1 away from the positioning disk 2. The motor mounting base 6 is equipped with the reducer 4 and the drive motor 5. The motor mounting base 6 is provided with a bearing mounting surface 61, which is connected to the inner ring 112 of the bearing.

[0054] It is worth noting that the inner ring 112 of the bearing is fitted and connected to the bearing mounting surface 61 and the fixing surface 24 on both sides, and can optionally be fixed by screws.

[0055] In some specific implementation methods, such as Figure 7 and Figure 8 As shown, the expansion assembly includes: a chuck 31 and a plurality of support rods 32; wherein,

[0056] The chuck 31 has multiple jaw portions 311 and a drive shaft 312. The drive shaft 312 is used to drive the multiple jaw portions 311 to move. The drive shaft 312 is connected to the coupling 41. Multiple support rods 32 are provided, the number of which corresponds to the number of jaw portions 311. Each support rod 32 is mounted on one jaw portion 311.

[0057] Specifically, such as Figure 7 As shown, the chuck portion 311 includes: a drive chuck 3111 and a pad 3112; wherein,

[0058] A drive jaw 3111 is connected to the drive shaft 312; a pad 3112 is mounted on the chuck 31, the pad 3112 is connected to the drive jaw 3111, and the support rod 32 is mounted on the pad 3112.

[0059] It is worth noting that the drive claw 3111 is welded and fixed to the pad 3112, so that when the drive claw 3111 is driven to move, it can drive the pad 3112 and the support rod 32 to perform opening or closing actions.

[0060] Optionally, the chuck 31 is fixedly connected to the positioning surface 23 of the positioning disk 2.

[0061] In some alternative implementations, such as Figure 7 As shown, the chuck 31 is a six-jaw chuck, that is, it includes six jaws 311. The drive shaft 312 of the chuck 31 is connected to the reducer 4 and the drive motor 5 through the coupling 41.

[0062] The operating principle of the expanded assembly device in this application includes:

[0063] In the initial state, the multiple jaws 311 of the chuck 31 are kept in the minimum closed state, that is, the six support rods 32 are also in the minimum closed state. When the power transmitted by the drive motor 5 and the reducer 4 is connected to the transmission shaft 312 through the coupling 41, the power is transmitted to the drive jaws 3111. The pad block 3112 is welded to the drive jaws 3111, which finally opens the six sets of support rods 32.

[0064] Understandably, the drive motor 5 can drive the support rod 32 to open or close by rotating forward and in reverse. The entire process of opening and closing the rubber seal sleeve is highly automated. The diameter of the opening is adjustable to adapt to rubber seal sleeves of various sizes, which improves work efficiency and reduces the complexity and labor intensity of manual operation. At the same time, its precise control ensures the accuracy and consistency of each feeding and opening, which provides convenience for subsequent rubber seal sleeve assembly work.

[0065] In some preferred embodiments, such as Figure 2 As shown, the expansion assembly device also includes: a guide rail 7 and a slider 71; wherein,

[0066] The slider 71 is movably mounted on the guide rail 7, and the mounting bracket 1 is supported on the slider 71. The slider 71 can reciprocate along the guide rail 7.

[0067] Optionally, the expansion assembly device further includes a drive cylinder 9 connected to the mounting bracket 1, the drive cylinder 9 being used to drive the mounting bracket 1 and the slider 71 to move along the guide rail 7.

[0068] It is understandable that the overall movement of the mounting bracket 1 and the support rod 32 on the guide rail can be controlled by driving the cylinder 9.

[0069] Furthermore, the guide rail 7 is arranged axially along the support rod 32 in its initial state.

[0070] It is understandable that the axial movement of the support rod 32 can be achieved through the cooperation of the guide rail 7 and the slider 71, which facilitates the adjustment of the position of the support rod 32 when performing expansion tasks.

[0071] In some alternative embodiments, a limiting block 8 is mounted on the guide rail 7 to limit the movement range of the slider 71. Further, the limiting block 8 is detachably mounted on the guide rail 7.

[0072] Understandably, the limit block 8 is used to limit the slider 71 after the position of the support rod 32 is determined, preventing it from moving during the expansion process.

[0073] In summary, the expansion assembly device of this application has a high degree of automation in the entire process of opening and closing the rubber sealing sleeve. The opening diameter is adjustable to adapt to rubber sealing sleeves of various sizes, which improves work efficiency and reduces the complexity and labor intensity of manual operation. At the same time, its precise control ensures the accuracy and consistency of each feeding and opening, which provides convenience for subsequent rubber sealing sleeve assembly work.

[0074] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0075] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0076] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. 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 this application. Therefore, this application 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 claimed herein.

Claims

1. An expansion assembly device for a rubber sealing sleeve, characterized in that, include: Mounting bracket (1); Positioning disk (2), which is movably mounted on the mounting bracket (1), is provided with an expansion component for expanding the rubber sealing sleeve. The positioning disk (2) can rotate around its center to adjust the posture of the expansion component to align with the spline groove. A drive assembly is mounted on the mounting bracket (1), the drive assembly is connected to the expansion assembly, and the drive assembly is used to drive the expansion assembly to perform an opening or closing action.

2. The expansion assembly device as described in claim 1, characterized in that: The mounting bracket (1) is provided with a cross roller bearing (11). The inner ring (112) of the cross roller bearing (11) can rotate relative to its outer ring (111). The outer ring (111) is fixedly connected to the mounting bracket (1), and the inner ring (112) is connected to the positioning plate (2).

3. The expansion assembly device as described in claim 2, characterized in that, The driving component includes: A speed reducer (4) is mounted on the mounting bracket (1), and the output shaft of the speed reducer (4) is connected to a coupling (41), which passes through the crossed roller bearing (11) and is connected to the expansion assembly. The drive motor (5) is connected to the reducer (4), and the drive motor (5) can drive the expansion assembly to perform an opening or closing action through the coupling (41).

4. The expansion assembly device as described in claim 3, characterized in that, The drive assembly further includes a motor mounting base (6), which is mounted on the side of the mounting bracket (1) away from the positioning plate (2). The motor mounting base (6) is equipped with the reducer (4) and the drive motor (5). The motor mounting base (6) is provided with a bearing mounting surface (61), which is connected to the bearing inner ring (112).

5. The expansion assembly device as described in claim 3, characterized in that, The expansion component includes: A chuck (31) is provided with a plurality of jaws (311) and a drive shaft (312). The drive shaft (312) is used to drive the plurality of jaws (311) to move. The drive shaft (312) is connected to the coupling (41). Multiple support rods (32) are provided, the number of which corresponds to the number of the claw portions (311), and each support rod (32) is mounted on one of the claw portions (311).

6. The expansion assembly device as described in claim 1, characterized in that: The mounting bracket (1) is provided with a limiting groove (12), and the positioning plate (2) is provided with a limiting post (21). The limiting post (21) is located in the limiting groove (12), and the limiting post (21) can move in the limiting groove (12) as the positioning plate (2) rotates.

7. The expansion assembly device as described in claim 1, characterized in that: The positioning disk (2) is provided with a handle (22).

8. The expansion assembly apparatus as claimed in claim 1, characterized in that, Also includes: Guide rail (7); The slider (71) is movably mounted on the guide rail (7), and the mounting bracket (1) is supported on the slider (71). The slider (71) can reciprocate along the guide rail (7).

9. The expansion assembly device as described in claim 8, characterized in that: A limiting block (8) is mounted on the guide rail (7), and the limiting block (8) is used to limit the movement range of the slider (71).

10. The expansion assembly apparatus as claimed in claim 8, characterized in that, Also includes: A drive cylinder (9) is connected to the mounting bracket (1) and is used to drive the mounting bracket (1) and the slider (71) to move along the guide rail (7).

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