A rotary arm support for a reverse circulation drilling rig

Abstract

The utility model discloses a rotating arm support of reverse circulation drilling machine belongs to drilling equipment spare and parts technical field. This support passes through reasonable spare and parts layout and structure design, including support main part, bearing assembly, connecting flange, positioning pin etc.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling equipment components, specifically to a rotating arm support for a reverse circulation drilling rig. Background Technology

[0002] Reverse circulation drilling rigs are commonly used in geological exploration, foundation engineering construction, and other fields. The proper operation of their rotating arm is crucial to the drilling rig's efficiency and construction quality. The rotating arm support, as a key component supporting the rotating arm, directly affects the stability, rotational accuracy, and overall performance of the drilling rig due to its structural rationality. Traditional reverse circulation drilling rig rotating arm supports suffer from suboptimal structural design and insufficient fit between components. This leads to problems such as arm swaying and low rotational accuracy during operation, thus affecting the drilling rig's performance and making installation and maintenance inconvenient. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a rotating arm support for a reverse circulation drilling rig to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A rotating arm support for a reverse circulation drilling rig includes a support body. A connecting flange for connecting to the rotating arm is provided on one side of the support body. The connecting flange is rotatably connected to the support body via a bearing assembly. The bearing assembly includes a deep groove ball bearing and a thrust ball bearing arranged sequentially, both of which are sleeved on the rotating shaft of the support body. A locating pin for positioning the rotating arm is also provided on the support body, and the locating pin is detachably connected to the support body. A mounting base for connecting to the drilling rig frame is provided at the bottom of the support body, and the mounting base has multiple mounting holes.

[0006] Furthermore, the connecting flange is provided with a keyway for transmission connection with the rotating arm. The keyway engages with the key on the rotating arm to achieve more reliable transmission and prevent relative rotation between the connecting flange and the rotating arm.

[0007] Furthermore, the support body is provided with a lubrication oil passage for lubricating the bearing assembly. The lubrication oil passage is connected to an external lubrication device, which can provide lubricating oil to the bearing assembly in a timely manner, reduce bearing wear, and extend its service life.

[0008] Furthermore, the mounting base and the support body are integrally formed, which enhances the strength and stability of the overall structure and can better withstand the load generated when the rotating arm is working.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model, by setting up a bearing assembly consisting of a deep groove ball bearing and a thrust ball bearing, can effectively improve the stability and accuracy of rotation between the connecting flange and the support body, making the rotating arm more stable during operation. The deep groove ball bearing can withstand radial loads, and the thrust ball bearing can withstand axial loads.

[0011] The positioning pins allow for precise positioning of the rotating arm during installation or in specific working conditions, preventing the rotating arm from shifting and ensuring operational accuracy. Furthermore, the positioning pins are detachable, facilitating adjustment or replacement as needed.

[0012] Multiple mounting holes on the mounting base facilitate the secure installation of the support onto the drilling rig frame. The mounting base and the support body are integrally molded, resulting in high structural strength and the ability to withstand large loads, ensuring the stability of the support during operation.

[0013] The keyway design on the connecting flange makes the transmission between the rotating arm and the connecting flange more reliable, avoids relative rotation, and improves the efficiency and accuracy of power transmission. The lubrication channels effectively lubricate the bearing components, reduce wear, extend bearing life, and lower equipment maintenance costs. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0015] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 is a side view of this utility model.

[0017] Figure 3 is a cross-sectional view of the present invention along the AA direction.

[0018] In the diagram: 1 - Support body; 2 - Connecting flange; 3 - Deep groove ball bearing; 4 - Thrust ball bearing; 5 - Shaft; 6 - Locating pin; 7 - Mounting seat; 8 - Mounting hole; 9 - Keyway; 10 - Lubrication channel. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Referring to Figures 1-3, this utility model provides a technical solution:

[0021] A rotating arm support for a reverse circulation drilling rig includes a support body 1. A connecting flange 2 for connecting to the rotating arm is provided on one side of the support body 1. The connecting flange 2 is rotatably connected to the support body 1 via a bearing assembly. The bearing assembly includes a deep groove ball bearing 3 and a thrust ball bearing 4 arranged sequentially, both of which are sleeved on the rotating shaft 5 of the support body 1. A positioning pin 6 for positioning the rotating arm is also provided on the support body 1, and the positioning pin 6 is detachably connected to the support body 1. A mounting base 7 for connecting to the drilling rig frame is provided at the bottom of the support body 1, and the mounting base 7 has multiple mounting holes 8.

[0022] The aforementioned connecting flange 2 is provided with a keyway 9 for transmission connection with the rotating arm. The keyway 9 engages with the key on the rotating arm to achieve reliable transmission and prevent relative rotation. The support body 1 is provided with a lubrication channel 10 for lubricating the bearing assembly. The lubrication channel 10 connects to an external lubrication device to provide timely lubrication to the bearing assembly. The mounting base 7 and the support body 1 are integrally formed, enhancing the overall structural strength and stability.

[0023] The working principle and usage process of this embodiment are as follows:

[0024] In use, the support is installed on the drilling rig frame using bolts or other fasteners through the mounting holes 8 on the mounting base 7. The rotating arm is connected to the connecting flange 2 via a key and keyway 9, achieving a transmission connection between the rotating arm and the connecting flange 2. The deep groove ball bearing 3 bears the radial load, and the thrust ball bearing 4 bears the axial load, ensuring the stability and accuracy of rotation between the connecting flange 2 and the support body 1. When positioning of the rotating arm is required, the positioning pin 6 is inserted into the corresponding positioning hole of the support body 1 and the rotating arm to achieve precise positioning. At the same time, the external lubrication device provides lubricating oil to the deep groove ball bearing 3 and the thrust ball bearing 4 through the lubrication oil passage 10, reducing bearing wear and extending service life.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotating arm support for a reverse circulation drilling rig, characterized in that, The system includes a support body, on one side of which is a connecting flange for connecting to a rotating arm. The connecting flange is rotatably connected to the support body via a bearing assembly. The bearing assembly includes a deep groove ball bearing and a thrust ball bearing arranged in sequence, both of which are sleeved on the rotating shaft of the support body. The support body also has a locating pin for positioning the rotating arm, which is detachably connected to the support body. The bottom of the support body has a mounting base for connecting to the drilling rig frame, and the mounting base has multiple mounting holes.

2. The rotating arm support for a reverse circulation drilling rig according to claim 1, characterized in that, The connecting flange is provided with a keyway for connecting with the rotary arm drive.

3. The rotating arm support for a reverse circulation drilling rig according to claim 1, characterized in that, The support body is provided with a lubrication oil passage for lubricating the bearing assembly, and the lubrication oil passage is connected to an external lubrication device.

4. The rotating arm support for a reverse circulation drilling rig according to claim 1, characterized in that, The mounting base and the main body of the support are integrally formed.

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