Underwater probe transmission sealing structure

Abstract

The utility model discloses an underwater probe transmission sealing structure, and belongs to the technical field of geophysical prospecting logging detection. The structure comprises a motor protection shell, a transmission protection shell and a probe protection shell which are coaxially arranged, a motor is arranged in the motor protection shell, the transmission protection shell is located between the motor protection shell and the probe protection shell, one end of the transmission protection shell is connected with the motor protection shell, a transmission mechanism is arranged in the transmission protection shell, and the other end of the transmission protection shell is connected with the probe protection shell. A sealing assembly is arranged on the transmission mechanism and located on the inner side of the transmission protection shell in a sleeved mode, the sealing assembly is arranged close to the probe protection shell, and the probe protection shell is connected with an output shaft of the motor through the transmission mechanism. The sealing assembly is sleeved on the inner side of the transmission protection shell on the transmission mechanism, and one end, close to the probe protection shell, of the transmission protection shell is sealed through the sealing assembly, so that water is prevented from entering the motor protection shell, the motor is further prevented from wading into water, and the motor is protected.

Description

Technical Field

[0001] The utility model relates to an underwater probe transmission sealing structure, belonging to the technical field of geophysical well logging detection. Background Art

[0002] Deepwater holes are often encountered in geophysical well logging projects. The probe rotates in the water to carry out detection work. Generally, a motor is used to drive the probe to rotate via a transmission assembly. To protect the probe and motor, they are usually placed in a protective shell. However, since the motor is stationary relative to the probe, the protective shell needs to be disconnected at the connection between the transmission assembly and the probe. Based on this, how to seal the transmission assembly to prevent the motor from wading through water is a technical problem that needs to be urgently solved by technicians in this field. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an underwater probe transmission sealing structure.

[0004] The utility model is achieved through the following technical solutions:

[0005] An underwater probe transmission sealing structure includes a coaxially arranged motor protective shell, a transmission protective shell and a probe protective shell, wherein a motor is provided in the motor protective shell, the transmission protective shell is located between the motor protective shell and the probe protective shell, and one end of the transmission protective shell is connected to the motor protective shell, a transmission mechanism is provided in the transmission protective shell, a sealing assembly is sleeved on the inner side of the transmission protective shell on the transmission mechanism, and the sealing assembly is arranged close to the probe protective shell, and the probe protective shell is connected to the output shaft of the motor through the transmission mechanism.

[0006] The transmission mechanism includes a transmission assembly connecting the probe protection shell and the motor output shaft. The transmission assembly is coaxially arranged with the transmission protection shell and is rotationally connected to the transmission protection shell through a connecting assembly.

[0007] The transmission assembly includes a transfer shaft and a transmission shaft. One end of the transfer shaft is connected to the output shaft of the motor. One end of the transmission shaft is connected to the end of the transfer shaft away from the motor through a coupling, and the other end is connected to the probe protective shell.

[0008] The connecting assembly comprises two bearings, both of which are sleeved on the transmission shaft, and a bearing pad is sleeved on the transmission shaft between the inner rings of the two bearings.

[0009] The inner ring of the bearing close to the sealing assembly of the two bearings is axially limited by the shoulder on the transmission shaft, and the outer ring is axially limited by the step in the transmission protective shell. The inner ring of the other bearing is axially limited by the inner retaining ring of the bearing sleeved on the transmission shaft, and the outer ring is axially limited by the outer retaining ring of the bearing provided in the transmission protective shell.

[0010] The bearing is a deep groove ball bearing.

[0011] The sealing assembly includes a cylindrical sleeve, and multiple grooves are provided on the inner wall and outer wall of the cylindrical sleeve along the circumferential direction. O-rings are provided in some or all of the grooves on the inner wall of the cylindrical sleeve, and O-rings are provided in some or all of the grooves on the outer wall of the cylindrical sleeve.

[0012] The beneficial effect of the present invention is that a sealing component is sleeved on the inner side of the transmission protective shell on the transmission mechanism, so that the end of the transmission protective shell close to the probe protective shell is sealed by the sealing component, thereby preventing water from entering the motor protective shell, further preventing the motor from wading in water, and protecting the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] In the figure: 1-motor protection case, 2-motor, 3-transmission protection case, 4-bearing, 5-cylindrical sleeve, 6-O-ring, 7-transmission shaft, 8-probe protection case, 9-bearing pad, 10-bearing outer retaining ring, 11-bearing inner retaining ring, 12-coupling, 13-adapter shaft, 14-circlip. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0016] like Figure 1 As shown, the underwater probe transmission sealing structure described in the present invention includes a coaxially arranged motor protection shell 1, a transmission protection shell 3 and a probe protection shell 8. The motor protection shell 1 is provided with a motor 2, and the transmission protection shell 3 is located between the motor protection shell 1 and the probe protection shell 8, and one end of the transmission protection shell 3 is connected to the motor protection shell 1. A transmission mechanism is provided in the transmission protection shell 3, and a sealing component is sheathed on the inner side of the transmission protection shell 3 on the transmission mechanism, and the sealing component is arranged close to the probe protection shell 8. The probe protection shell 8 is connected to the output shaft of the motor 2 through the transmission mechanism. Figure 1As shown, when in use, the probe installed inside is protected by the probe protective shell 8, and one end of the transmission protective shell 3 is connected to the motor protective shell 1 to protect the transmission mechanism and the motor 2. The motor 2 drives the probe protective shell 8 and the probe installed in the probe protective shell 8 to rotate together through the transmission mechanism to carry out the detection work. Since the probe protective shell 8 is rotating, while the motor protective shell 1 and the transmission protective shell 3 are stationary, the transmission protective shell 3 is not connected to the probe protective shell 8 to form a seal. Therefore, a sealing component is installed on the inner side of the transmission protective shell 3 on the transmission mechanism to seal the end of the transmission protective shell 3 close to the probe protective shell 8 through the sealing component, thereby preventing water from entering the motor protective shell 1, further preventing the motor 2 from wading through water, and protecting the motor 2.

[0017] Specifically, one end of the motor protection shell 1 away from the transmission protection shell 3 is sealed.

[0018] The transmission mechanism includes a transmission assembly connecting the probe protection shell 8 and the output shaft of the motor 2. The transmission assembly is coaxially arranged with the transmission protection shell 3 and is rotationally connected to the transmission protection shell 3 through a connecting assembly.

[0019] The transmission assembly includes an adapter shaft 13 and a transmission shaft 7. One end of the adapter shaft 13 is connected to the output shaft of the motor 2. One end of the transmission shaft 7 is connected to the end of the adapter shaft 13 away from the motor 2 through a coupling 12, and the other end is connected to the probe protective shell 8.

[0020] The connecting assembly includes two bearings 4, each mounted on a transmission shaft 7. A bearing pad 9 is mounted on the transmission shaft 7 between the inner rings of the two bearings 4. The transmission shaft 7 is rotationally connected to the transmission protective housing 3 via the two bearings 4, ensuring coaxiality between the transmission shaft 7 and the transmission protective housing 3 and ensuring rotational stability of the transmission shaft 7 relative to the transmission protective housing 3.

[0021] The inner ring of the bearing 4 close to the sealing assembly of the two bearings 4 is axially limited by the shoulder on the transmission shaft 7, and the outer ring is axially limited by the step in the transmission protective shell 3. The inner ring of the other bearing 4 is axially limited by the bearing inner retaining ring 11 mounted on the transmission shaft 7, and the outer ring is axially limited by the bearing outer retaining ring 10 provided in the transmission protective shell 3.

[0022] The bearing 4 is a deep groove ball bearing.

[0023] The sealing assembly includes a cylindrical sleeve 5, and a plurality of grooves are provided on the inner wall and the outer wall of the cylindrical sleeve 5 along the circumferential direction. O-type sealing rings 6 are provided in some or all of the grooves on the inner wall of the cylindrical sleeve 5, and O-type sealing rings 6 are provided in some or all of the grooves on the outer wall of the cylindrical sleeve 5. Figure 1As shown, the end of the cylindrical sleeve 5 away from the bearing 4 is axially restrained by a retaining spring 14 installed in the transmission protective housing 3, while the other end of the cylindrical sleeve 5 is axially restrained by one of the bearings 4. The friction between the sealing assembly, the transmission protective housing 3, and the transmission shaft 7, as well as the sealing ability of the sealing assembly, can be adjusted as needed by adjusting the number of O-rings 6 on the inner and outer walls of the cylindrical sleeve 5.

Claims

1. An underwater probe transmission sealing structure, characterized by: The invention comprises a motor protection shell (1), a transmission protection shell (3) and a probe protection shell (8) which are coaxially arranged. A motor (2) is arranged in the motor protection shell (1). The transmission protection shell (3) is located between the motor protection shell (1) and the probe protection shell (8), and one end of the transmission protection shell (3) is connected to the motor protection shell (1). A transmission mechanism is arranged in the transmission protection shell (3). A sealing component is sleeved on the inner side of the transmission protection shell (3) on the transmission mechanism, and the sealing component is arranged close to the probe protection shell (8). The probe protection shell (8) is connected to the output shaft of the motor (2) through the transmission mechanism.

2. The underwater probe transmission sealing structure according to claim 1, characterized in that: The transmission mechanism comprises a transmission assembly connecting the probe protection shell (8) and the output shaft of the motor (2); the transmission assembly is coaxially arranged with the transmission protection shell (3) and is rotationally connected to the transmission protection shell (3) via a connecting assembly.

3. The underwater probe transmission sealing structure according to claim 2, characterized in that: The transmission assembly comprises a transfer shaft (13) and a transmission shaft (7), one end of the transfer shaft (13) is connected to the output shaft of the motor (2), one end of the transmission shaft (7) is connected to the end of the transfer shaft (13) away from the motor (2) through a coupling (12), and the other end is connected to the probe protective shell (8).

4. The underwater probe transmission sealing structure according to claim 3, characterized in that: The connecting assembly comprises two bearings (4), both bearings (4) are sleeved on a transmission shaft (7), and a bearing pad (9) is sleeved on the transmission shaft (7) between the inner rings of the two bearings (4).

5. The underwater probe transmission sealing structure according to claim 4, characterized in that: The inner ring of the bearing (4) close to the sealing assembly of the two bearings (4) is axially limited by a shaft shoulder on the transmission shaft (7), and the outer ring is axially limited by a step in the transmission protection shell (3); the inner ring of the other bearing (4) is axially limited by a bearing inner retaining ring (11) sleeved on the transmission shaft (7), and the outer ring is axially limited by a bearing outer retaining ring (10) provided in the transmission protection shell (3).

6. The underwater probe transmission sealing structure according to claim 4, characterized in that: The bearing (4) is a deep groove ball bearing.

7. The underwater probe transmission sealing structure according to claim 1, characterized in that: The sealing assembly comprises a cylindrical sleeve (5), wherein a plurality of grooves are provided on the inner wall and the outer wall of the cylindrical sleeve (5) along the circumferential direction, and an O-type sealing ring (6) is provided in some or all of the grooves on the inner wall of the cylindrical sleeve (5), and an O-type sealing ring (6) is provided in some or all of the grooves on the outer wall of the cylindrical sleeve (5).

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