Pipeline joint installation auxiliary tool

Abstract

The invention relates to a pipeline joint installation auxiliary tool, and relates to the technical field of pipeline joint installation, the pipeline joint installation auxiliary tool comprises an end plate, one end of the end plate is provided with a positioning assembly, the positioning assembly is used for enabling the end plate and a pipeline to be coaxially arranged, the other end of the end plate is fixedly provided with an outer sleeve, and the outer sleeve is sleeved with a plurality of expansion joints; a plurality of driving blocks are arranged on the side, facing the outer sleeve, of the expansion joint and penetrate through the outer sleeve, an inner sleeve is inserted into the outer sleeve, a plurality of driving grooves are formed in the outer wall of the inner sleeve, the inner walls of the driving grooves abut against the driving blocks, and a driving assembly is arranged between the inner sleeve and the end plate. The driving assembly is used for driving the inner sleeve and the outer sleeve to move relatively. The flexible composite pipe connector has the advantages that the connector can be conveniently installed on the flexible composite pipe, and the situation that operators frequently straighten the flexible composite pipe is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline joint installation, and in particular to an auxiliary tool for pipeline joint installation. Background Art

[0002] A flexible composite pipe is a conveying pipe made of a polymer composite material with bending performance. Due to its good service performance and convenient and fast installation, it is widely used in various fields. Currently, joints are usually used to connect flexible composite pipes with other pipe fittings.

[0003] Since the flexible composite pipe is relatively soft, during the installation of the joint on the flexible composite pipe, the flexible composite pipe is prone to bending or sagging, resulting in the phenomenon that the flexible composite pipe and the joint are not concentric, making it difficult to align the joint and the flexible composite pipe on the same axis. Therefore, during the installation of the joint and the flexible composite pipe, the operator needs to frequently straighten the flexible composite pipe. Summary of the Invention

[0004] In order to facilitate the installation of the joint on the flexible composite pipe and reduce the situation where the operator frequently straightens the flexible composite pipe, the present application provides an auxiliary tool for pipeline joint installation.

[0005] The auxiliary tool for pipeline joint installation provided by the present application adopts the following technical solutions: An auxiliary tool for pipeline joint installation includes an end plate. A positioning component is arranged at one end of the end plate, and the positioning component is used to coaxially arrange the end plate with the pipeline. An outer sleeve is fixedly arranged at the other end of the end plate. A plurality of expansion joints are sleeved on the outer sleeve. A plurality of driving blocks are arranged on the side of the expansion joint facing the outer sleeve, and the driving blocks penetrate the outer sleeve. An inner sleeve is inserted into the outer sleeve. A plurality of driving grooves are formed on the outer wall of the inner sleeve, and the inner wall of the driving groove abuts against the driving block. A driving component is arranged between the inner sleeve and the end plate, and the driving component is used to drive the inner sleeve and the outer sleeve to move relative to each other.

[0006] By adopting the above technical solutions, when installing the joint on the flexible composite pipe, first insert the end plate into the pipeline and use the positioning component to coaxially arrange the end plate with the pipeline. Then use the driving component to make the inner sleeve approach the end plate. During the movement of the inner sleeve, the driving groove on the inner sleeve squeezes the driving block, so that the driving block expands the expansion joint, achieving the effect that the expansion joint abuts against the inner wall of the pipeline. By using the method of multiple expansion joints abutting against the inner wall of the pipeline, the flexible composite pipe is supported and straightened. During the installation of the joint and the flexible composite pipe, the phenomenon that the flexible composite pipe is bent or sagged, resulting in the non-concentricity of the flexible composite pipe and the joint, is reduced. It is convenient to align the joint and the flexible composite pipe on the same axis, and the situation where the operator frequently straightens the flexible composite pipe is reduced, achieving the effect of facilitating the installation of the joint on the flexible composite pipe.

[0007] Preferably, the driving groove includes a straight section, a concave section and an inclined section. The concave section is located between the straight section and the inclined section. One end of the concave section close to the end plate is connected to the straight section, and the other end of the concave section far from the end plate is connected to the inclined section. One end of the inclined section far from the concave section is in contact with the outer wall of the inner sleeve. An arc convex surface is provided at one end of the driving block far from the expansion joint, and the arc convex surface is used to abut against the straight section, the concave section and the inclined section.

[0008] By adopting the above technical solution, during the process of the inner sleeve approaching the end plate, the inclined surface on the inclined section pushes the driving block away from the axis of the inner sleeve, achieving the effect of expanding the expansion joint. When the inner sleeve is reset, the arc convex surface on the driving block fits with the arc surface of the concave section, so that the driving block forms a limit for the inner sleeve and reduces the shaking of the inner sleeve.

[0009] Preferably, a plurality of hoop grooves are formed in the expansion joint, and fixing hoops are arranged in the hoop grooves. The fixing hoops are used to abut the expansion joint against the outer sleeve. A plurality of bolt grooves are formed on one side of the expansion joint far from the driving block, and a plurality of fixing holes are formed on one side of the expansion joint facing the driving block. The corresponding fixing holes and bolt grooves communicate with each other. A plurality of fixing grooves are formed on one side of the driving block facing the expansion joint. Corresponding fixing bolts are commonly arranged in the bolt grooves, the fixing holes and the fixing grooves. The fixing bolts penetrate through the bolt grooves and the fixing holes, and the fixing bolts are threadedly connected with the fixing grooves. One end of the fixing bolt far from the fixing groove is located in the bolt groove.

[0010] By adopting the above technical solution, the fixing hoops tie the expansion joint to the outer sleeve, and the fixing bolts fix the expansion joint to the driving block, so that the driving block is not easily dropped from the outer sleeve.

[0011] Preferably, the driving assembly includes a driving screw, a driving nut and a driving spring. The inner sleeve is sleeved on the driving screw. One end of the driving screw is fixedly connected to the end plate, and a hand-held seat is fixedly arranged at the other end of the driving screw. The driving nut is sleeved on the driving screw, and the driving nut is threadedly connected with the driving screw. One end of the driving nut far from the hand-held seat abuts against one end of the inner sleeve far from the end plate. The driving spring is sleeved on the driving screw. One end of the driving spring is used to abut against the end plate, and the other end of the driving spring is used to abut against one end of the inner sleeve facing the end plate.

[0012] By adopting the above technical solution, when the driving nut is rotated, the driving nut moves along the driving screw. When the driving nut approaches the end plate, the driving nut pushes the inner sleeve to approach the end plate. At this time, the inner sleeve squeezes the driving spring. When the driving nut moves away from the end plate, the driving spring gradually resets and pushes the inner sleeve away from the end plate, achieving the effect of resetting the inner sleeve.

[0013] Preferably, a plurality of telescopic rods are arranged at one end of the driving nut facing the hand-held seat. The telescopic rods are circumferentially arrayed with the axis of the driving screw as the center. A telescopic sleeve is sleeved on the telescopic rod. A driving ring is jointly arranged at one end of the telescopic sleeve away from the driving nut. The driving ring is coaxially arranged with the driving screw, and the driving ring is rotatably connected with the hand-held seat.

[0014] By adopting the above technical solution, the rotation of the driving block drives the rotation of all the telescopic sleeves. The rotation of the telescopic sleeve drives the rotation of the telescopic rod. The rotation of the telescopic rod drives the rotation of the driving nut. While the driving nut rotates, it moves along the driving screw. The movement of the driving nut drives the telescopic rod to move along the telescopic sleeve.

[0015] Preferably, a driving motor is fixedly arranged on the hand-held seat. A driving gear is fixedly arranged on the output shaft of the driving motor. A transmission gear is sleeved on the driving ring. The transmission gear is fixedly connected with the driving ring. The transmission gear meshes with the driving gear.

[0016] By adopting the above technical solution, the start of the driving motor drives the rotation of the driving gear. The rotation of the driving gear drives the rotation of the transmission gear. The rotation of the transmission gear drives the rotation of the driving ring.

[0017] Preferably, the positioning assembly includes a plurality of positioning balls and a positioning motor. The positioning balls are used to abut against the inner wall of the pipeline. A positioning arm is rotatably arranged on the positioning ball. A positioning shaft is fixedly arranged on the positioning arm. The positioning shaft is rotatably connected with one end of the end plate away from the outer sleeve. The positioning shafts are circumferentially distributed with the axis of the end plate as the center. An external gear is sleeved on the positioning shaft. The external gear is fixedly connected with the positioning shaft. The positioning motor is fixedly connected with one end of the end plate away from the outer sleeve. The output shaft of the positioning motor is coaxially arranged with the axis of the end plate. An internal gear is fixedly arranged on the output shaft of the positioning motor. The external gears are all externally meshed with the internal gear.

[0018] By adopting the above technical solution, after the end plate is inserted into the pipeline, the positioning motor is started. The positioning motor drives the rotation of the internal gear. The rotation of the internal gear drives the rotation of the external gear. The rotation of the external gear drives the rotation of the positioning shaft. The rotation of the positioning shaft drives the rotation of the positioning arm. The rotation of the positioning arm drives the positioning ball to fit with the inner wall of the pipeline, achieving the effect of coaxially arranging the end plate and the pipeline.

[0019] Preferably, circular plates are commonly provided at one ends of the positioning shafts away from the end plates. A yoke is fixedly provided on one side of the circular plate facing the end plate. The yoke is a hollow cylinder. A groove is formed at one end of the yoke facing the internal gear. A wire die is arranged in the groove. A wire coil is wound on the wire die. A compression spring is inserted into the yoke. One end of the compression spring is fixedly connected to the inside of the yoke. An armature is fixedly provided at the other end of the compression spring. A limit ring is sleeved on the armature. The armature is slidably connected to the limit ring. The limit ring is fixedly connected to the yoke. Friction plates are arranged on the opposite surfaces of the armature and the internal gear. The opposite friction plates are used for abutting against each other.

[0020] By adopting the above technical solution, when the positioning motor is started, the wire coil is electrified, and the yoke attracts the armature to approach the yoke, creating a gap between the friction plates, facilitating the positioning motor to drive the internal gear to rotate. When the output shaft of the positioning motor stops, the wire coil is powered off, the electromagnetic force between the yoke and the armature disappears, and the compression spring resumes to drive the armature to reset, causing the friction plates to abut against each other, thereby making it difficult for the internal gear to rotate and reducing the situation of the positioning arm shaking.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. By providing an end plate, a positioning assembly, an outer sleeve, an expansion joint, a driving block, an inner sleeve, a driving groove, and a driving assembly, and using the method of multiple expansion joints abutting against the inner wall of the pipeline to support and straighten the flexible composite pipe, during the installation of the joint and the flexible composite pipeline, the phenomenon that the flexible composite pipe is bent or sagged, resulting in the non-concentricity of the flexible composite pipe and the joint, is reduced, facilitating the alignment of the joint and the flexible composite pipe on the same axis, and reducing the situation where the operator frequently straightens the flexible composite pipe, achieving the effect of facilitating the installation of the joint on the flexible composite pipe; 2. By providing a straight section, a concave section, an inclined section, and an arc convex surface, it is convenient for the inner sleeve to push the driving block away from the axis of the inner sleeve, achieving the effect of expanding the expansion joint, and at the same time reducing the situation of the inner sleeve shaking; 3. By providing a driving screw, a driving nut, a driving spring, and a hand-held seat, the effect of relative movement between the inner sleeve and the outer sleeve is achieved. Description of the Drawings

[0022] Figure 1 It is a cross-sectional view of an auxiliary tool for installing a pipeline joint in an embodiment of the present application.

[0023] Figure 2 It is a cross-sectional view showing the positional relationship between the inner sleeve and the driving groove in an embodiment of the present application.

[0024] Figure 3 It is a cross-sectional view showing the connection relationship between the expansion joint and the driving block in an embodiment of the present application.

[0025] Figure 4It is a cross-sectional view showing the connection relationship between the end plate and the hand-held seat in the embodiment of the present application.

[0026] Figure 5 It is a cross-sectional view showing the connection relationship between the positioning ball and the positioning shaft in the embodiment of the present application.

[0027] Figure 6 It is a cross-sectional view showing the connection relationship between the positioning motor and the positioning shaft in the embodiment of the present application.

[0028] Figure 7 It is a cross-sectional view showing the connection relationship between the friction plate and the end plate in the embodiment of the present application.

[0029] Figure 8 It is a cross-sectional view showing the positional relationship between the armature and the limiting ring in the embodiment of the present application.

[0030] Explanation of reference numerals: 1, end plate; 2, positioning assembly; 21, positioning ball; 211, positioning arm; 212, positioning shaft; 22, positioning motor; 221, internal gear; 222, external gear; 3, outer sleeve; 31, expansion joint; 311, hoop groove; 312, fixing hoop; 32, driving block; 321, arc convex surface; 4, inner sleeve; 41, driving groove; 411, straight section; 412, concave section; 413, inclined section; 5, driving assembly; 51, driving screw; 52, driving nut; 53, driving spring; 6, hand-held seat; 61, driving motor; 611, driving gear; 612, transmission gear; 62, driving ring; 621, telescopic sleeve; 622, telescopic rod; 7, fixing bolt; 71, bolt groove; 72, fixing hole; 73, fixing groove; 8, round plate; 81, magnetic yoke; 811, groove; 82, wire die; 83, wire coil; 84, compression spring; 85, armature; 86, friction plate; 87, limiting block. Detailed implementation manners

[0031] The following further elaborates on the present application in conjunction with the attached Figure 1-8 to make a more detailed description of the present application.

[0032] The embodiment of the present application discloses an auxiliary tool for installing a pipe joint. Refer to Figures 1 to 3, including an end plate 1, with a positioning component 2 installed at one end of the end plate 1. The positioning component 2 is used to coaxially set the end plate 1 with the pipeline. At the other end of the end plate 1, an outer sleeve 3 is installed, and the end plate 1 and the outer sleeve 3 are coaxially set. A number of expansion joints 31 are sleeved on the outer sleeve 3. A number of driving blocks 32 are installed on the side of the expansion joint 31 facing the outer sleeve 3. The driving blocks 32 penetrate through the outer sleeve 3, and an arc convex surface 321 is provided at one end of the driving block 32 away from the expansion joint 31. An inner sleeve 4 is inserted into the outer sleeve 3, and the inner sleeve 4 and the outer sleeve 3 are coaxially set. A number of driving grooves 41 are provided on the outer wall of the inner sleeve 4. The driving grooves 41 include a straight section 411, a concave section 412, and an inclined section 413. The concave section 412 is located between the straight section 411 and the inclined section 413. One end of the concave section 412 close to the end plate 1 is connected to the straight section 411, and the other end of the concave section 412 away from the end plate 1 is connected to the inclined section 413. One end of the inclined section 413 away from the concave section 412 is connected to the outer wall of the inner sleeve 4. The arc convex surface 321 is used to abut against the straight section 411, the concave section 412, and the inclined section 413. A driving component 5 is arranged between the inner sleeve 4 and the end plate 1. The driving component 5 is used to drive the inner sleeve 4 and the outer sleeve 3 to move relatively. When installing the joint on the flexible composite pipe, first insert the end plate 1 into the pipeline, and use the positioning component 2 to coaxially set the end plate 1 with the pipeline. Then use the driving component 5 to make the inner sleeve 4 approach the end plate 1. During the movement of the inner sleeve 4, the inclined surface on the inclined section 413 pushes the driving block 32 away from the axis of the inner sleeve 4, so that the driving block 32 expands the expansion joint 31, achieving the effect that the expansion joint 31 abuts against the inner wall of the pipeline. By using the method of multiple expansion joints 31 abutting against the inner wall of the pipeline, the flexible composite pipe is supported and straightened. During the installation of the joint and the flexible composite pipeline, the phenomenon that the flexible composite pipe is bent or sagged, resulting in the non-concentricity of the flexible composite pipe and the joint, is reduced. It is convenient for the joint and the flexible composite pipe to be aligned on the same axis, reducing the situation that the operator frequently straightens the flexible composite pipe, and achieving the effect of facilitating the installation of the joint on the flexible composite pipe.

[0033] Referring to Figure 1 and Figure 3 , a number of hoop grooves 311 are provided on the expansion joint 31, and a fixing hoop 312 is tied and fixed in the hoop grooves 311. The fixing hoop 312 ties the expansion joint 31 to the outer sleeve 3. A number of bolt grooves 71 are provided on the side of the expansion joint 31 away from the driving block 32, and a number of fixing holes 72 are provided on the side of the expansion joint 31 facing the driving block 32. The relative fixing holes 72 and the bolt grooves 71 communicate with each other. A number of fixing grooves 73 are provided on the side of the driving block 32 facing the expansion joint 31. A fixing bolt 7 is jointly arranged in the relative bolt grooves 71, fixing holes 72, and fixing grooves 73. The fixing bolt 7 penetrates through the bolt groove 71 and the fixing hole 72, and the fixing bolt 7 is threadedly connected to the fixing groove 73. One end of the fixing bolt 7 away from the fixing groove 73 is located in the bolt groove 71. The fixing bolt 7 fixes the expansion joint 31 on the driving block 32, so that the driving block 32 is not easily dropped from the outer sleeve 3.

[0034] To drive the relative movement between the inner sleeve 4 and the outer sleeve 3, refer to Figures 1 to 4 , the driving assembly 5 includes a driving screw 51, a driving nut 52 and a driving spring 53. The inner sleeve 4, the driving nut 52 and the driving spring 53 are all sleeved on the driving screw 51. One end of the driving screw 51 is fixedly connected to the end plate 1, and the other end of the driving screw 51 is installed with a hand-held seat 6. The driving nut 52 is located between the inner sleeve 4 and the hand-held seat 6. The driving nut 52 is threadedly connected to the driving screw 51. One end of the driving nut 52 away from the hand-held seat 6 abuts against one end of the inner sleeve 4 away from the end plate 1. The driving spring 53 is located between the inner sleeve 4 and the end plate 1. One end of the driving spring 53 is used to abut against the end plate 1, and the other end of the driving spring 53 is used to abut against one end of the inner sleeve 4 facing the end plate 1. When the driving nut 52 approaches the end plate 1, the driving nut 52 pushes the inner sleeve 4 towards the end plate 1. At this time, the inner sleeve 4 squeezes the driving spring 53. When the driving nut 52 moves away from the end plate 1, the driving spring 53 gradually resets and pushes the inner sleeve 4 away from the end plate 1. When the arc convex surface 321 on the driving block 32 fits with the arc surface of the recessed section 412, the inner sleeve 4 resets. At this time, the driving block 32 forms a limit on the inner sleeve 4 to reduce the shaking of the inner sleeve 4.

[0035] Refer to Figures 1 to 4 , a plurality of telescopic rods 622 are installed at one end of the driving nut 52 facing the hand-held seat 6. The telescopic rods 622 are circumferentially arranged around the axis of the driving screw 51. A telescopic sleeve 621 is sleeved on the telescopic rod 622. One end of the telescopic sleeve 621 away from the driving nut 52 is jointly installed with a driving ring 62. The driving ring 62 is coaxially arranged with the driving screw 51, and the driving ring 62 is rotatably connected to the hand-held seat 6. A driving motor 61 is installed on the hand-held seat 6, and a driving gear 611 is installed on the output shaft of the driving motor 61. A transmission gear 612 is sleeved on the driving ring 62. The transmission gear 612 is welded to the driving ring 62, and the transmission gear 612 meshes with the driving gear 611. When the driving motor 61 starts, it drives the driving gear 611 to rotate. The rotation of the driving gear 611 drives the transmission gear 612 to rotate. The rotation of the transmission gear 612 drives the driving ring 62 to rotate. The rotation of the driving block 32 drives all the telescopic sleeves 621 to rotate. The rotation of the telescopic sleeve 621 drives the telescopic rods 622 to rotate. The rotation of the telescopic rods 622 drives the driving nut 52 to rotate. While the driving nut 52 rotates, it moves along the driving screw 51. The movement of the driving nut 52 drives the telescopic rods 622 to move along the telescopic sleeves 621.

[0036] To make the end plate 1 coaxially arranged with the pipeline, refer to Figures 1 to 6, the positioning component 2 includes a plurality of positioning balls 21 and a positioning motor 22. The positioning balls 21 are used to abut against the inner wall of the pipeline. The positioning motor 22 is installed on the end wall of the end plate 1 away from the outer sleeve 3, and the output shaft of the positioning motor 22 is coaxially arranged with the axis of the end plate 1. A positioning arm 211 is rotatably arranged on the positioning ball 21, and a positioning shaft 212 penetrates through the positioning arm 211. The positioning shaft 212 is fixedly connected with the positioning arm 211. One end of the positioning shaft 212 is rotatably connected to the end of the end plate 1 away from the outer sleeve 3, and the positioning shafts 212 are circumferentially distributed around the axis of the end plate 1. An external gear 222 is sleeved on the positioning shaft 212, and the external gear 222 is fixedly connected with the positioning shaft 212. An internal gear 221 is installed on the output shaft of the positioning motor 22, and the external gears 222 are all externally meshed with the internal gear 221. After the end plate 1 is inserted into the pipeline, the positioning motor 22 is started. The positioning motor 22 drives the internal gear 221 to rotate. The rotation of the internal gear 221 drives the external gear 222 to rotate. The rotation of the external gear 222 drives the positioning shaft 212 to rotate. The rotation of the positioning shaft 212 drives the positioning arm 211 to rotate. The rotation of the positioning arm 211 drives the positioning ball 21 to fit against the inner wall of the pipeline, achieving the effect of coaxially setting the end plate 1 and the pipeline.

[0037] Reference Figures 1 to 8 , a circular plate 8 is commonly installed at one end of the positioning shaft 212 away from the end plate 1. A magnetic yoke 81 is installed on the side of the circular plate 8 facing the end plate 1. The magnetic yoke 81 is a hollow cylinder. A groove 811 is opened at one end of the magnetic yoke 81 facing the internal gear 221. A wire die 82 is installed in the groove 811, and a wire coil 83 is wound around the wire die 82. A compression spring 84 is inserted into the magnetic yoke 81. One end of the compression spring 84 is fixedly connected to the inside of the magnetic yoke 81, and an armature 85 is installed at the other end of the compression spring 84. A limiting ring 87 is sleeved on the armature 85. The armature 85 is slidably connected to the limiting ring 87, and the limiting ring 87 is fixedly installed on the magnetic yoke 81. Friction plates 86 are installed on the opposite surfaces of the armature 85 and the internal gear 221, and the opposite friction plates 86 are used to abut against each other. When the positioning motor 22 is started, the wire coil 83 is energized, and the magnetic yoke 81 attracts the armature 85 to approach the magnetic yoke 81, creating a gap between the friction plates 86, facilitating the positioning motor 22 to drive the internal gear 221 to rotate. When the output shaft of the positioning motor 22 stops, the wire coil 83 is de-energized, the electromagnetic force between the magnetic yoke 81 and the armature 85 disappears, and the compression spring 84 resumes to drive the armature 85 to reset, causing the friction plates 86 to abut against each other, thereby making it difficult for the internal gear 221 to rotate and reducing the situation of the positioning arm 211 shaking.

[0038] The implementation principle of an auxiliary tooling for installing a pipe joint in an embodiment of this application is as follows: When installing the joint on a flexible composite pipe, first insert the end plate 1 into the pipe, and use the positioning ball 21 to coaxialize the end plate 1 with the pipe. Then, move the inner sleeve 4 closer to the end plate 1. During the movement of the inner sleeve 4, the inclined surface on the inclined section 413 pushes the driving block 32 away from the axis of the inner sleeve 4, causing the driving block 32 to expand the expansion joint 31, achieving the effect of the expansion joint 31 abutting against the inner wall of the pipe. By using the method of multiple expansion joints 31 abutting against the inner wall of the pipe, the flexible composite pipe is supported and straightened. During the installation of the joint and the flexible composite pipe, the phenomenon that the flexible composite pipe is bent or sagged, resulting in the non-concentricity between the flexible composite pipe and the joint, is reduced, facilitating the alignment of the joint and the flexible composite pipe on the same axis, reducing the frequent straightening of the flexible composite pipe by the operator, and achieving the effect of facilitating the installation of the joint on the flexible composite pipe. After the joint is installed on the flexible composite pipe, reset the inner sleeve 4, and then remove the tooling from the pipe.

[0039] The above are all the preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An auxiliary tooling for installing a pipe joint, including an end plate, characterized in that: One end of the end plate is provided with a positioning component for coaxially arranging the end plate and the pipeline. The other end of the end plate is fixedly provided with an outer sleeve. A plurality of expansion joints are sleeved on the outer sleeve. A plurality of driving blocks are arranged on one side of the expansion joint facing the outer sleeve. The driving blocks penetrate through the outer sleeve. An inner sleeve is inserted into the outer sleeve. A plurality of driving grooves are formed on the outer wall of the inner sleeve. The inner wall of the driving groove abuts against the driving blocks. A driving component is arranged between the inner sleeve and the end plate for driving the inner sleeve and the outer sleeve to move relatively.

2. The auxiliary tooling for installing a pipe joint according to claim 1, wherein: The driving groove includes a straight section, a concave section and an inclined section. The concave section is located between the straight section and the inclined section. One end of the concave section close to the end plate is connected to the straight section. The other end of the concave section far from the end plate is connected to the inclined section. One end of the inclined section far from the concave section is connected to the outer wall of the inner sleeve. An arc convex surface is arranged at one end of the driving block far from the expansion joint for abutting against the straight section, the concave section and the inclined section.

3. The auxiliary tooling for installing a pipe joint according to claim 1, characterized in that: A plurality of hoop grooves are formed on the expansion joint. A fixing hoop is arranged in the hoop groove for abutting the expansion joint against the outer sleeve. A plurality of bolt grooves are formed on one side of the expansion joint far from the driving block. A plurality of fixing holes are formed on one side of the expansion joint facing the driving block. The corresponding fixing holes and bolt grooves communicate with each other. A plurality of fixing grooves are formed on one side of the driving block facing the expansion joint. A fixing bolt is commonly arranged in the corresponding bolt groove, fixing hole and fixing groove. The fixing bolt penetrates through the bolt groove and the fixing hole and is in threaded connection with the fixing groove. One end of the fixing bolt far from the fixing groove is located in the bolt groove.

4. The installation auxiliary tooling for a pipeline joint according to claim 1, characterized in that: The driving component includes a driving screw, a driving nut and a driving spring. The inner sleeve is sleeved on the driving screw. One end of the driving screw is fixedly connected to the end plate. A hand-held seat is fixedly arranged at the other end of the driving screw. The driving nut is sleeved on the driving screw and is in threaded connection with the driving screw. One end of the driving nut far from the hand-held seat abuts against one end of the inner sleeve far from the end plate. The driving spring is sleeved on the driving screw. One end of the driving spring is used for abutting against the end plate. The other end of the driving spring is used for abutting against one end of the inner sleeve facing the end plate.

5. An auxiliary tooling for installing a pipeline joint according to claim 4, characterized in that: A plurality of telescopic rods are arranged at one end of the driving nut facing the hand-held seat. The telescopic rods are circumferentially arrayed with the axis of the driving screw as the center. A telescopic sleeve is sleeved on the telescopic rod. A driving ring is commonly arranged at one end of the telescopic sleeve far from the driving nut. The driving ring is coaxially arranged with the driving screw and is rotatably connected to the hand-held seat.

6. The installation auxiliary tooling for a pipeline joint according to claim 5, characterized in that: A driving motor is fixedly arranged on the hand-held seat. A driving gear is fixedly arranged on the output shaft of the driving motor. A transmission gear is sleeved on the driving ring and is fixedly connected to the driving ring. The transmission gear meshes with the driving gear.

7. An auxiliary tool for installing a pipe joint according to claim 1, characterized in that: The positioning component includes a number of positioning balls and a positioning motor. The positioning balls are used to abut against the inner wall of the pipeline. A positioning arm is rotatably arranged on the positioning ball, and a positioning shaft is fixedly arranged on the positioning arm. The positioning shaft is rotatably connected to the end plate away from the outer sleeve. The positioning shafts are circumferentially distributed around the axis of the end plate. An external gear is sleeved on the positioning shaft, and the external gear is fixedly connected to the positioning shaft. The positioning motor is fixedly connected to the end plate away from the outer sleeve, and the output shaft of the positioning motor is coaxially arranged with the axis of the end plate. An internal gear is fixedly arranged on the output shaft of the positioning motor, and the external gears are all externally meshed with the internal gear.

8. An auxiliary tool for installing a pipe joint according to claim 7, characterized in that: A circular plate is commonly arranged at the ends of the positioning shafts away from the end plate. A magnetic yoke is fixedly arranged on the side of the circular plate facing the end plate. The magnetic yoke is a hollow cylinder. A groove is opened at one end of the magnetic yoke facing the internal gear, and a wire die is arranged in the groove. A wire coil is wound around the wire die. A compression spring is inserted into the magnetic yoke. One end of the compression spring is fixedly connected to the inside of the magnetic yoke, and an armature is fixedly arranged at the other end of the compression spring. A limit ring is sleeved on the armature, and the armature is slidably connected to the limit ring. The limit ring is fixedly connected to the magnetic yoke. Friction plates are arranged on the opposite surfaces of the armature and the internal gear, and the opposite friction plates are used to abut against each other.

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