A guide device

Abstract

The utility model provides a kind of guiding device, including base pipe, and the elastic framework is arranged outside base pipe, and the elastic framework is connected with the both ends of base pipe, and gap is equipped between the elastic framework and base pipe, and rubber ring is equipped on base pipe, and rubber ring is placed in gap, and the plug is set in one end of base pipe, and the other end is connected with hole protection sleeve pipe.The guiding device of the utility model is guided by the plug and supported by the elastic framework, so that the guiding device is close to the center position of drilling hole, and plays the role of deviation correction and straightening.The elastic framework deforms at the bending of drilling hole and the place blocked by coal cinder, so that the guiding device can pass smoothly;then the elastic framework gives springback compensation by the support of rubber ring, so that the elastic framework restores to its original shape, and the guiding device returns to the center position of drilling hole, and continues to maintain the role of deviation correction and straightening.

Description

Technical Field

[0001] This utility model relates to the field of gas extraction technology, specifically to a guiding device. Background Technology

[0002] Currently, coal mines mainly adopt the method of inserting protective casing into the borehole to improve the efficiency of gas drainage and extend the service life of gas drainage boreholes. However, due to the large drilling depth and the influence of factors such as residue in the borehole, deviation is prone to occur during the drilling process. When pushing the protective casing into the borehole, the resistance in the borehole is relatively large, and the end of the protective casing is prone to getting stuck in the borehole wall at the deviation position. Therefore, the depth to which the protective casing is pushed into the borehole is limited, making it impossible to achieve the goal of inserting the protective casing into the full depth of the borehole, reducing the effect of coal seam gas drainage and reducing the service life of gas drainage boreholes. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to increase the pushing depth of the protective sleeve.

[0004] This utility model solves the above-mentioned technical problems through the following technical means: This utility model provides a guiding device, including a base tube, an elastic skeleton is provided on the outside of the base tube, the elastic skeleton is connected to both ends of the base tube, a gap is provided between the elastic skeleton and the base tube, a rubber ring is provided on the base tube and placed in the gap, a plug is provided at one end of the base tube and the other end is connected to a protective sleeve.

[0005] Beneficial effects: The guiding device of this utility model, guided by the plug and supported by the elastic frame, brings the guiding device close to the center of the borehole, playing a role in correction and straightening. The elastic frame deforms at bends in the borehole or where cinders blockage occurs, allowing the guiding device to pass smoothly; then, the elastic frame is supported by the rubber ring and provides rebound compensation, causing the elastic frame to return to its original shape, and the guiding device returns to the center of the borehole, continuing to maintain the correction and straightening functions.

[0006] Preferably, the base pipe is one of PVC pipe, steel pipe or iron pipe.

[0007] Preferably, the elastic frame is a spring steel sheet.

[0008] Preferably, the elastic skeleton is riveted to both ends of the base tube.

[0009] Preferably, multiple rubber rings are provided, and the multiple rubber rings are arranged on the base tube with the same spacing.

[0010] Preferably, the plug is inserted into the end of the base pipe.

[0011] Preferably, the plug is arc-shaped.

[0012] Preferably, the base tube is threadedly connected to the protective sleeve.

[0013] The advantages of this utility model are: 1. The plug of the guide device of this utility model is arc-shaped, which can reduce the resistance when pushing the protective casing and improve the efficiency of lowering the protective casing. The elastic frame of the guide device of this utility model is a spring steel sheet, which reduces the contact area with the borehole wall and reduces friction. The spring steel sheet supports and corrects deviation and keeps the device straight, so that the guide device is close to the center of the borehole and avoids blockage caused by borehole deviation or deformation.

[0014] 2. This utility model utilizes the synergistic effect of the spring steel sheet and the rubber ring to bring the guiding device closer to the borehole center, maintaining its correction and straightening functions. When the borehole experiences localized deformation or cinder blockage, the spring steel sheet deforms laterally under external pushing force. Supported by the rubber ring, a beneficial gap is created between the spring steel sheet and the borehole wall, allowing the casing to advance deeper into the borehole. After passing through the abnormal section, the spring steel sheet rebounds due to the support of the rubber ring, restoring its original shape and bringing the guiding device closer to the borehole center, continuing its correction and straightening functions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the guiding device in an embodiment of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] according to Figure 1 As shown, this embodiment provides a guiding device, which includes a base tube 11. An elastic skeleton 13 is provided on the outside of the base tube 11. The elastic skeleton 13 is fixed at both ends of the base tube 11. A gap is provided between the elastic skeleton 13 and the base tube 11. A rubber ring 12 is provided in the gap. The rubber ring 12 is sleeved on the base tube 11. A plug 14 is provided at one end of the base tube 11, and the other end is threadedly connected to a protective sleeve 20.

[0019] The base tube 11 is a PVC pipe, and the elastic skeleton 13 is a spring steel sheet. Multiple spring steel sheets are arranged around the outer circumference of the base tube 11. The multiple spring steel sheets are riveted to both ends of the base tube 11 and wrap around the base tube 11. There is an arc-shaped gap between the multiple spring steel sheets and the base tube 11, which reduces the contact area between the spring steel sheets and the borehole wall, reduces the friction of pushing, and plays a role in correction and straightening through the support of the spring steel sheets, so that the guiding device is close to the center of the borehole and avoids blockage caused by borehole deviation, deformation, etc.

[0020] Multiple rubber rings 12 are provided, and the specific number can be set according to the needs. In this embodiment, three rubber rings 12 are provided on the base tube 11. The rubber rings 12 will deform under external pressure, and when the pressure is removed, the rubber rings 12 will return to their original shape, which can provide spring steel sheet rebound compensation.

[0021] The top of the plug 14 is arc-shaped, and the bottom of the plug 14 is inserted into one end of the base tube 11, which can reduce the resistance when the protective sleeve 20 is pushed and improve the efficiency of the lower protective sleeve 20.

[0022] In this embodiment, the synergistic effect of the spring steel sheet and the rubber ring 12 allows the guiding device to approach the center of the borehole, continuing its correction and straightening functions. When the borehole experiences local deformation or coal slag blockage, the spring steel sheet deforms laterally under external pushing force. Supported by the rubber ring 12, a beneficial gap is created between the spring steel sheet and the borehole wall, allowing the casing 20 to advance deeper into the borehole. After passing through the abnormal section, the spring steel sheet rebounds due to the support of the rubber ring 12, restoring its original shape and allowing the guiding device to approach the center of the borehole, continuing its correction and straightening functions.

[0023] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A guiding device, characterized in that, Includes a base tube (11), an elastic skeleton (13) is provided on the outside of the base tube (11), the elastic skeleton (13) is connected to both ends of the base tube (11), a gap is provided between the elastic skeleton (13) and the base tube (11), a rubber ring (12) is provided on the base tube (11), the rubber ring (12) is placed in the gap, a plug (14) is provided at one end of the base tube (11), and the other end is connected to the protective sleeve (20).

2. The guiding device according to claim 1, characterized in that, The base pipe (11) is one of PVC pipe, steel pipe or iron pipe.

3. The guiding device according to claim 1, wherein the elastic frame (13) is a spring steel sheet.

4. The guiding device according to claim 1, wherein the elastic skeleton (13) is riveted to both ends of the base tube (11).

5. According to claim 1, the guide device is provided with multiple rubber rings (12), and the multiple rubber rings (12) are arranged on the base tube (11) with the same spacing.

6. The guiding device according to claim 1, wherein the plug (14) is inserted into the end of the base tube (11).

7. The guide device according to claim 1, wherein the plug (14) is arc-shaped.

8. The guiding device according to claim 1, wherein the base tube (11) is threadedly connected to the protective sleeve (20).

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