Adjustable device and method for sealing oil holes in bushings

Abstract

This invention provides an adjustable device and method for sealing oil holes in bushings, relating to the field of bushing technology. The invention includes an adjusting device and a fixing device. The adjusting device is installed on the inner wall of the bushing body via the fixing device. The adjusting device uses an mounting head and a sealing ring to seal the holes in the bushing body, facilitating subsequent oil pipeline sealing and pressure testing. The adjusting device includes an adjusting plate installed on the inner wall of the bushing body via the fixing device. Two support plates are slidably arranged on the inner wall of the adjusting plate. The support plates have an "I"-shaped cross-section, and threaded screws are threaded through the surfaces of the two support plates. Operating blocks are installed on the surfaces of the screws. This invention can better ensure the sealing performance of the bushing body and the stable assembly of the sealing ring during pressure testing of the reducer's oil pipeline, thus facilitating the normal conduct of the test and improving the reliability and accuracy of the test results.

Description

Technical Field

[0001] This invention relates to the field of bushing technology, and in particular to an adjustable device and method for sealing oil holes inside bushings. Background Technology

[0002] Bushings are an important component inside a speed reducer. Their main functions are to prevent oil leakage, isolate contaminants, and ensure the normal operation of all internal components. They are typically combined with other components such as bearings, gears, and housings to provide sealing, protection, and extend service life.

[0003] To improve the performance of bearings in existing speed reducers, a small hole is drilled in the bushing to allow lubricating oil to be applied to the bearing for lubrication and protection. To ensure the quality of the speed reducer, a pressure test is performed on the oil pipeline. During this test, the hole in the bushing needs to be sealed to ensure uniform stress on the bushing. The common sealing method is to fill the hole with a sealing ring. However, it has been found that the sealing ring deforms and is squeezed out under stress, which affects the pressure test and causes errors in the test results of the oil pipeline, thus affecting the normal use of the speed reducer. Summary of the Invention

[0004] The technical problem this invention aims to solve is as follows: To improve the performance of bearings in existing speed reducers, a small hole is drilled in the bushing to allow lubricating oil to be applied to the bearing for lubrication and protection. To ensure the quality of the speed reducer, a pressure test is performed on the oil pipeline. During this test, the hole in the bushing is typically sealed to ensure uniform stress on the bushing. The usual sealing method is to fill the hole with a sealing ring. However, it has been found that the sealing ring deforms and is squeezed out under stress, affecting the pressure test results and causing errors in the oil pipeline test results, thus impacting the normal operation of the speed reducer.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an adjustable device for sealing the oil hole in the bushing, comprising an adjusting device and a fixing device. The adjusting device is installed on the inner wall of the bushing body by means of the fixing device. The adjusting device seals the hole in the bushing body by means of the mounting head and the sealing ring, which facilitates the subsequent sealing of the oil pipeline and pressure test.

[0006] The effect achieved by the above components is as follows: when the oil pipeline of the reducer is pressure tested, the adjusting device is first installed on the inner wall of the bushing body with the help of the fixing device, then the adjusting device is operated to seal the holes of the bushing body, and finally the corresponding test is carried out by the pressure given by the equipment.

[0007] Preferably, the adjusting device includes an adjusting plate mounted on the inner wall of the bushing body by means of a fixing device. Two support plates are slidably arranged on the inner wall of the adjusting plate. The cross-section of the support plate is "I" shaped. The surfaces of the two support plates are respectively threaded with screws, and the surfaces of the screws are equipped with operating blocks. Mounting plates are rotatably mounted on both sides of the surfaces of the two support plates, and mounting blocks are mounted on both mounting plates. The inner wall of the mounting block is provided with a mounting groove, and the mounting block is equipped with a mounting head by means of the mounting groove. A sealing ring is mounted on the surface of the mounting head.

[0008] The aforementioned components achieve the following effects: during pressure testing of the reducer's oil lines, they better ensure the sealing performance of the bushing body and guarantee the stable assembly of the sealing ring, thereby facilitating the normal conduct of the test and improving the reliability and accuracy of the test results.

[0009] Preferably, the adjusting device further includes a fixing head installed at the end of the screw that contacts the inner wall of the bushing body, wherein the fixing head increases the connection strength between the screw and the bushing body.

[0010] The effect achieved by the above-mentioned components is that, through the setting of the fixing head made of rubber material, the friction is further increased when the screw contacts the inner wall of the bushing body, and it is not easy to cause damage to the inside of the bushing body due to excessive squeezing force, thus ensuring the normal use of the bushing body in the future.

[0011] Preferably, the adjusting device further includes a fixing ring mounted on the arc surface of the screw, wherein the fixing ring is located between the support plate and the fixing head.

[0012] The effect achieved by the above components is as follows: by setting the fixing ring, the screw contacts and presses against the inner wall of the bushing body, and after the position of the support plate is fixed, the fixing ring is rotated to make the fixing ring contact the surface of the support plate, thereby ensuring the stability of the screw position, preventing it from rotating and loosening, and ensuring the stable assembly of the sealing ring.

[0013] Preferably, the adjusting device further includes a connecting plate installed on the inner wall of the adjusting plate, wherein springs are respectively installed on both sides of the connecting plate, and the other end of the springs is connected to the surface of the supporting plate.

[0014] The effect achieved by the above components is as follows: when the adjustment device is installed and fixed in the inner wall of the bushing body by the setting of the spring and the connecting plate, the two support plates on the adjustment plate will slide under the elastic force of the spring, so that the sealing ring on the mounting head can be quickly inserted into the hole of the bushing body, which facilitates subsequent operation and improves the ease of use of the adjustment device.

[0015] Preferably, the mounting slot on the mounting block and the mounting head are connected by a plug-in connection.

[0016] The effect achieved by the above components is that, through the insertion of the mounting slot and the mounting head, mounting heads with different end face specifications can be replaced, enabling the use of sealing rings with different specifications of holes, thereby further improving the functionality of the adjustment device.

[0017] Preferably, the fixing device includes U-shaped plates installed on both sides of the surface of the adjusting plate, and a clamping plate is inserted into the inner wall of the two U-shaped plates. The clamping plate is inserted into the inner wall of the bushing body. The clamping plate and the U-shaped plates are connected and fixed by a fixing rod. A thread is opened on the arc surface of one end of the fixing rod, and a nut is threaded on the arc surface of the fixing rod.

[0018] The effects achieved by the above components are: the adjustment device can be assembled more conveniently and quickly during use, thus making it easier to conduct pressure tests on the oil pipeline, and also facilitating the inspection and maintenance of the device components, ensuring efficient sealing of the bushing body holes.

[0019] Preferably, a reinforcing pad, which is a rubber pad, is fixedly connected to the inner wall of the card plate.

[0020] The effect achieved by the above components is that, by setting the reinforcing pad, it is less likely that gaps will be generated between the card plate and the arc surface of the bushing body, and the friction is further increased, thereby better ensuring the positional stability of the adjustment device and improving the performance of the fixing device.

[0021] Preferably, the fixing device further includes a bolt threaded through the surface of the clamping plate, and a pressure block is installed at one end of the bolt.

[0022] The effect achieved by the above components is as follows: by setting the bolts and pressure blocks, rotating the bolts threaded on the clamping plate causes the pressure blocks fixedly connected to the bolts to contact and press against the inner wall of the bushing body, making the position of the clamping plate more stable, thereby better ensuring the fixed position of the adjusting plate of the adjusting device and preventing abnormal sliding deviation.

[0023] Preferably, a method of using an adjustable device for sealing an oil hole in a bushing includes the following steps:

[0024] Step 1: When using the adjustable device to seal the holes in the bushing body in preparation for the subsequent pressure test, first place the adjusting plate in the inner wall of the bushing body, then attach the clamping plate to the arc surface of the bushing body, and insert both ends of the clamping plate into the inner wall of the U-shaped plate that is fixedly connected to both sides of the adjusting plate surface. Then, pass the fixing rod through the surface of the adjusting plate and the two clamping plates, and then thread the nut onto the fixing rod until the nut contacts and presses against the surface of the clamping plate on one side. Finally, rotate the bolt on the clamping plate so that the pressure block at one end of the bolt contacts and presses against the surface of the bushing body, thus fixing the position of the adjusting plate of the adjusting device.

[0025] Step 2: Then, install the sealing ring corresponding to the size of the bushing body hole onto the corresponding size mounting head and fix it with glue. Then insert the mounting head into the mounting groove on the surface of the mounting block and then loosen the support plate. Under the action of the spring force fixed on the connecting plate, the support plate will slide on the inner wall of the adjusting plate, so that the mounting plate on the mounting head will rotate relative to one end of the support plate, thereby driving the sealing ring into the hole of the bushing body for filling and sealing.

[0026] Step 3: Finally, rotate the screws on the two support plates so that one end of the screw approaches the inner wall of the bushing body under the rotation of the operating block, until the fixing head on the screw contacts and presses against the inner wall of the bushing body, fixing the position of the support plates and the mounting head. Then rotate the fixing ring on the screw to contact the support plate, positioning the screw and ensuring the stability of the device. Finally, perform a pressure test on the bushing body and the corresponding oil pipeline.

[0027] The beneficial effects of this invention are:

[0028] 1. In this invention, the screws on the two support plates are rotated, causing one end of the screw to move closer to the inner wall of the bushing body under the rotation of the operating block, until the fixing head on the screw contacts and presses against the inner wall of the bushing body, thus fixing the position of the support plates and the mounting head. Then, the fixing ring on the screw is rotated to contact the support plate, positioning the screw pair and ensuring the stability of the device. Finally, a pressure test is performed on the bushing body and the corresponding oil pipeline.

[0029] 2. This invention can better ensure the sealing performance of the bushing body and the stable assembly of the sealing ring when conducting pressure tests on the oil pipeline of the reducer, thereby facilitating the normal conduct of the test and improving the reliability and accuracy of the test results. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the structure of the adjustable device and method for sealing the oil hole in the bushing proposed in this invention under the condition of use.

[0032] Figure 2 This is a schematic diagram of the adjusting device in the adjustable device and method for sealing the oil hole in the bushing proposed in this invention.

[0033] Figure 3 This is an exploded structural diagram of the adjusting device in the adjustable device and method for sealing the oil hole in the bushing proposed in this invention.

[0034] Figure 4This is a schematic diagram of the fixing device in the adjustable device and method for sealing the oil hole inside the bushing proposed in this invention.

[0035] Figure 5 This is a schematic diagram of the component structure of the adjusting device in the adjustable device and method for sealing the oil hole in the bushing proposed in this invention.

[0036] Legend: 1. Adjustment device; 101. Adjustment plate; 102. Support plate; 103. Mounting plate; 14. Mounting block; 15. Mounting groove; 16. Mounting head; 17. Sealing ring; 18. Screw; 19. Fixing head; 110. Connecting plate; 111. Spring; 112. Operating block; 113. Fixing ring; 2. Fixing device; 21. U-shaped plate; 22. Clamping plate; 23. Fixing rod; 24. Nut; 25. Reinforcing pad; 26. Bolt; 27. Pressure block; 3. Bushing body; 4. Hole. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] Figure 1 and Figure 2 An adjustable device and method for sealing oil holes in a bushing are shown, comprising an adjusting device 1 and a fixing device 2. The adjusting device 1 is installed on the inner wall of the bushing body 3 by means of the fixing device 2. The adjusting device 1 seals the hole 4 of the bushing body 3 by means of the mounting head 16 and the sealing ring 17, which facilitates subsequent oil pipeline sealing and pressure testing.

[0040] Figure 1 , Figure 2 and Figure 3The adjustment device 1 shown includes an adjustment plate 101 mounted on the inner wall of the bushing body 3 by means of a fixing device 2. Two support plates 102 are slidably arranged on the inner wall of the adjustment plate 101. The cross-section of the support plates 102 is "I" shaped. The surfaces of the two support plates 102 are respectively threaded with screws 18, and the surfaces of the screws 18 are equipped with operating blocks 112. Mounting plates 103 are rotatably mounted on both sides of the surfaces of the two support plates 102, and mounting blocks 14 are mounted on both mounting plates 103. The inner wall of the mounting block 14 is provided with a mounting groove 15, and the mounting block 14 is equipped with a mounting head 16 by means of the mounting groove 15. A sealing ring 17 is mounted on the surface of the mounting head 16. When the oil pipeline of the reducer is pressure tested, the rubber sealing ring 17 is first installed on the mounting head 16 with adhesive, and then the mounting head 16 is installed. The head 16 is inserted into the inner wall of the mounting groove 15 on the surface of the mounting block 14. Then, the adjusting plate 101 of the adjusting device 1 is mounted on the inner wall of the bushing body 3 with the help of the fixing device 2, so that the sealing ring 17 is aligned with the hole 4. Then, the two support plates 102 on the inner wall of the adjusting plate 101 are slid, and one end of the two support plates 102 will move closer to each other. At this time, the mounting plate 103 at the other end will rotate, so that the mounting block 14 moves closer to the hole 4 until the sealing ring 17 on the mounting head 16 is inserted into the hole 4 of the bushing body 3 to seal it. Finally, the corresponding test is carried out by the pressure given by the equipment. At this time, when the oil pipeline of the reducer is pressure tested, the sealing performance of the bushing body 3 can be better guaranteed, and the stable assembly of the sealing ring 17 can also be guaranteed, which facilitates the normal conduct of the test and improves the reliability and accuracy of the test results.

[0041] Figure 1 , Figure 2 and Figure 3 The adjustment device 1 shown also includes a fixing head 19 installed at the end of the screw 18 that contacts the inner wall of the bushing body 3. The fixing head 19 increases the connection strength between the screw 18 and the bushing body 3. The fixing head 19, made of rubber, further increases the friction when the screw 18 contacts the inner wall of the bushing body 3, and is less likely to cause damage to the inside of the bushing body 3 due to excessive squeezing force, thus ensuring the normal use of the bushing body 3. The adjustment device 1 also includes a fixing ring 113 installed on the arc surface of the screw 18. The fixing ring 113 is located between the support plate 102 and the fixing head 19. With the fixing ring 113, after the screw 18 contacts and squeezes the inner wall of the bushing body 3 to fix the position of the support plate 102, the fixing ring 113 is rotated to contact the surface of the support plate 102, thereby ensuring the stability of the position of the screw 18 and preventing it from rotating and loosening, thus ensuring the stable assembly of the sealing ring 17.

[0042] Figure 1 , Figure 2 and Figure 3The adjustment device 1 shown also includes a connecting plate 110 installed on the inner wall of the adjustment plate 101. Springs 111 are installed on both sides of the connecting plate 110. The other end of the springs 111 is connected to the surface of the support plate 102. With the springs 111 and the connecting plate 110, when the adjustment device 1 is installed and fixed in the inner wall of the bushing body 3, the two support plates 102 on the adjustment plate 101 will slide under the elastic force of the springs 111, so that the sealing ring 17 on the mounting head 16 can be quickly inserted into the hole 4 of the bushing body 3, which facilitates subsequent operation and improves the ease of use of the adjustment device 1. The mounting groove 15 on the mounting block 14 is connected to the mounting head 16 by plugging. By plugging the mounting groove 15 to the mounting head 16, mounting heads 16 with different end face specifications can be replaced, which enables the use of sealing rings 17 with different specifications of holes 4, further improving the functionality of the adjustment device 1.

[0043] Figure 1 , Figure 2 and Figure 4 The fixing device 2 shown includes U-shaped plates 21 installed on both sides of the surface of the adjusting plate 101. A retaining plate 22 is inserted into the inner wall of both U-shaped plates 21, and the retaining plate 22 is inserted into the inner wall of the bushing body 3. The retaining plate 22 and the U-shaped plates 21 are connected and fixed by a fixing rod 23. A thread is provided on the arc surface of one end of the fixing rod 23, and a nut 24 is threaded onto the arc surface of the fixing rod 23. When using the fixing device 2 to install and fix the adjusting device 1, first adjust the adjusting plate 101 of the adjusting device 1 so that the sealing ring 17 is aligned with the hole 4 on the bushing body 3, and then snap the retaining plate 22 onto the bushing body 3. On the arc surface, both sides of the clamping plate 22 are simultaneously inserted into the inner wall of the U-shaped plate 21 fixedly connected to both sides of the surface of the adjusting plate 101. Then, the fixing rod 23 passes through the clamping plate 22 and the U-shaped plate 21. Finally, the nut 24 is threaded onto the fixing rod 23, so that the nut 24 contacts and presses against the surface of the clamping plate 22, fixing the position of the clamping plate 22, thereby fixing the position of the adjusting plate 101. At this time, the adjusting device 1 can be assembled more conveniently and quickly when in use, thus making it easier to perform pressure tests on the oil pipeline and to inspect and maintain the components of the device, ensuring efficient sealing of the bushing body 3 hole 4.

[0044] Figure 1 , Figure 2 and Figure 4The inner wall of the shown clamping plate 22 is fixedly connected with a reinforcing pad 25, which is a rubber pad. The reinforcing pad 25 makes it less likely for gaps to form between the clamping plate 22 and the arc surface of the bushing body 3, and further increases the friction, thereby better ensuring the positional stability of the adjusting device 1 and improving the performance of the fixing device 2. The fixing device 2 also includes a bolt 26 that is threaded through and connected to the surface of the clamping plate 22. One end of the bolt 26 is equipped with a pressure block 27. By rotating the bolt 26 threaded on the clamping plate 22, the pressure block 27 fixedly connected to the bolt 26 comes into contact with and presses against the inner wall of the bushing body 3, making the position of the clamping plate 22 more stable, thereby better ensuring the position of the adjusting plate 101 of the adjusting device 1 is fixed and less prone to abnormal sliding or displacement.

[0045] Working principle: When using the adjustable device to seal the hole 4 of the bushing body 3 in preparation for the subsequent pressure test, first, the adjusting plate 101 is placed in the inner wall of the bushing body 3. Then, the clamping plate 22 is clamped onto the arc surface of the bushing body 3, and both ends of the clamping plate 22 are inserted into the inner wall of the U-shaped plate 21 that is fixedly connected to both sides of the surface of the adjusting plate 101. Then, the fixing rod 23 passes through the surface of the adjusting plate 101 and the two clamping plates 22. Then, the nut 24 is threaded onto the fixing rod 23 until the nut 24 contacts and presses against the surface of one side of the clamping plate 22. Finally, the bolt 26 on the clamping plate 22 is rotated so that the pressure block 27 at one end of the bolt 26 contacts and presses against the surface of the bushing body 3, fixing the position of the adjusting plate 101 of the adjusting device 1. Then, the sealing ring 17 corresponding to the size of the hole 4 of the bushing body 3 is installed on the corresponding size mounting head 16 and fixed with glue. Then, the mounting head 16 is inserted into the assembly. In the mounting groove 15 on the surface of mounting block 14, the support plate 102 is then released. Under the elastic force of the spring 111 fixedly connected to the connecting plate 110, the support plate 102 slides on the inner wall of the adjusting plate 101, causing the mounting plate 103 on the mounting head 16 to rotate relative to one end of the support plate 102. This drives the sealing ring 17 into the hole 4 of the bushing body 3 for filling and sealing. Finally, the screws 18 on the two support plates 102 are rotated, causing one end of the screws 18 to move closer to the inner wall of the bushing body 3 under the rotation of the operating block 112, until the fixing head 19 on the screws 18 contacts and presses against the inner wall of the bushing body 3, fixing the position of the support plate 102 and the mounting head 16. Then, the fixing ring 113 on the screws 18 is rotated, causing the fixing ring 113 to contact the support plate 102, positioning the screws 18 and ensuring the stability of the device. Then, a pressure test is performed on the bushing body 3 and the corresponding oil pipeline.

[0046] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An adjustable device for sealing an oil hole in a bushing, characterized in that: The device includes an adjusting device (1) and a fixing device (2). The adjusting device (1) is installed on the inner wall of the bushing body (3) by means of the fixing device (2). The adjusting device (1) seals the hole (4) of the bushing body (3) by means of the mounting head (16) and the sealing ring (17) to facilitate subsequent oil pipeline sealing and pressure testing. The adjusting device (1) includes an adjusting plate (101) installed on the inner wall of the bushing body (3) by means of the fixing device (2). Two support plates (102) are slidably arranged on the inner wall of the adjusting plate (101). The cross section of the support plate (102) is "I". The surfaces of the two support plates (102) are respectively threaded with screws (18). The surfaces of the screws (18) are equipped with operating blocks (112). Mounting plates (103) are rotatably mounted on both sides of the surfaces of the two support plates (102). The mounting plates (103) on both sides are jointly equipped with mounting blocks (14). The inner wall of the mounting block (14) is provided with a mounting groove (15), wherein the mounting block (14) is equipped with a mounting head (16) by means of the mounting groove (15), and a sealing ring (17) is installed on the surface of the mounting head (16); the fixing device (2) includes U-shaped plates (21) installed on both sides of the surface of the adjusting plate (101), and the inner walls of the two U-shaped plates (21) are connected to a clamping plate (22), and the clamping plate (22) is connected to the inner wall of the bushing body (3). The clamping plate (22) and the U-shaped plate (21) are connected and fixed by a fixing rod (23), and a thread is provided on the arc surface of one end of the fixing rod (23), and a nut (24) is threaded on the arc surface of the fixing rod (23); a reinforcing pad (25) is fixedly connected to the inner wall of the clamping plate (22), and the reinforcing pad (25) The adjustment device (1) is a rubber pad; the adjustment device (1) also includes a fixing head (19) installed at the end of the screw (18) that contacts the inner wall of the bushing body (3), wherein the fixing head (19) increases the connection strength between the screw (18) and the bushing body (3); the adjustment device (1) also includes a fixing ring (113) installed on the arc surface of the screw (18), wherein the fixing ring (113) is located between the support plate (102) and the fixing head (19); the adjustment device (1) also includes a connecting plate (110) installed on the inner wall of the adjustment plate (101), wherein springs (111) are respectively installed on both sides of the connecting plate (110), and the other end of the springs (111) is connected to the surface of the support plate (102).

2. The adjustable device for sealing the oil hole inside a bushing according to claim 1, characterized in that: The mounting slot (15) on the mounting block (14) and the mounting head (16) are connected by a plug-in connection.

3. An adjustable device for sealing an oil hole in a bushing according to claim 2, characterized in that: The fixing device (2) also includes a bolt (26) that is threaded through the surface of the clamping plate (22) and a pressure block (27) is installed at one end of the bolt (26).

4. A method of use, comprising the steps described in any one of claims 1-3, of using an adjustable device for sealing an oil hole in a bushing: Step 1: When using the adjustable device to seal the hole (4) of the bushing body (3) in preparation for the subsequent pressure test, first place the adjusting plate (101) in the inner wall of the bushing body (3), then clamp the clamping plate (22) on the arc surface of the bushing body (3), and insert the two ends of the clamping plate (22) into the inner wall of the U-shaped plate (21) that is fixedly connected to both sides of the surface of the adjusting plate (101), then pass the fixing rod (23) through the surface of the adjusting plate (101) and the two clamping plates (22), then thread the nut (24) onto the fixing rod (23) until the nut (24) contacts and presses against the surface of the clamping plate (22) on one side, and finally rotate the bolt (26) on the clamping plate (22) so that the pressure block (27) at one end of the bolt (26) contacts and presses against the surface of the bushing body (3), so that the position of the adjusting plate (101) of the adjusting device (1) is fixed. Step 2: Then, install the sealing ring (17) corresponding to the size of the hole (4) of the bushing body (3) onto the mounting head (16) of the corresponding size and fix it with glue. Then insert the mounting head (16) into the mounting groove (15) on the surface of the mounting block (14). Then loosen the support plate (102). The support plate (102) will slide on the inner wall of the adjusting plate (101) under the elastic force of the spring (111) fixedly connected to the connecting plate (110). This will cause the mounting plate (103) on the mounting head (16) to rotate relative to one end of the support plate (102), thereby driving the sealing ring (17) into the hole (4) of the bushing body (3) for filling and sealing. Step 3: Finally, rotate the screws (18) on the two support plates (102) so that one end of the screws (18) moves closer to the inner wall of the bushing body (3) under the rotation of the operating block (112) until the fixing head (19) on the screws (18) contacts and presses against the inner wall of the bushing body (3), so that the positions of the support plates (102) and the mounting head (16) are fixed. Then rotate the fixing ring (113) on the screws (18) so that the fixing ring (113) contacts the support plate (102) to position the screws (18) and ensure the stability of the device. Then, perform a pressure test on the bushing body (3) and the corresponding oil pipeline.

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