Auxiliary device for pipe well construction in municipal engineering

Abstract

The present invention belongs to the technical field of cranes, and relates to an auxiliary device for pipe well construction for municipal engineering, including a connecting sleeve, a connecting rope, an inner rod, a connecting plate, a guide rail, a sliding frame and a support arm, wherein the end of the pull rope of the crane is connected to a connecting sleeve, the inner rod is slidably connected to the connecting sleeve, the bottom of the inner rod is connected to a connecting plate, a plurality of guide rails are evenly spaced along the circumferential direction of the connecting plate, each guide rail is slidably connected to a sliding frame, a support arm is rotatably connected to the sliding frame, the support arm can rotate to resist the inner wall of the pipe well, and a connecting rope is connected between the support arm and the upper outer side of the connecting sleeve. In the process of splicing the pipe well, the present invention can adjust the position of the entire device by swinging the positioning support rod, thereby adjusting the position of the pipe well, so that the two pipe wells are aligned with each other, and the position offset of the pipe wells is prevented from affecting the splicing, and the operation is more convenient during splicing.

Description

Technical Field

[0001] The invention belongs to the technical field of cranes and relates to an auxiliary device for pipe well construction in municipal engineering. Background Art

[0002] With the advancement of urbanization, municipal engineering construction is becoming more and more frequent, among which pipe well construction is an indispensable part. As an important part of urban infrastructure, pipe wells carry multiple functions such as water supply, drainage, heating, and communication. During the construction of pipe wells, lifting equipment is required to lift the pipe wells into the pre-dug foundation pit.

[0003] At present, in the process of using lifting equipment to lift the pipe well to the foundation pit, since the pipe well is set up in sections, it needs to be lifted repeatedly for many times. However, during the lifting process, the pipe well lifted later is difficult to align with the pipe well lifted previously. When performing the alignment operation, it is necessary to manually operate the lifting equipment repeatedly to achieve the alignment between the pipe wells. The overall operation process is relatively cumbersome and inefficient. Summary of the invention

[0004] In view of this, the present invention provides an auxiliary device for pipe well construction for municipal engineering.

[0005] The technical implementation scheme of the present invention is: an auxiliary device for pipe well construction for municipal engineering, including a connecting sleeve, a connecting rope, an inner rod, a connecting plate, a guide rail, a sliding frame, a support arm, a guide assembly, a lifting mechanism and a positioning mechanism, the end of the pull rope of the crane is connected to a connecting sleeve, the inner rod is slidably connected to the connecting sleeve, the bottom of the inner rod is connected to a connecting plate, a plurality of guide rails are evenly spaced along the circumferential direction of the connecting plate, each guide rail is slidably connected to a sliding frame, a support arm is rotatably connected to the sliding frame, the support arm can rotate to resist the inner wall of the pipe well, and a connecting rod is connected between the support arm and the upper outer side of the connecting sleeve. Rope, a guide assembly is provided on the inner rod, a lifting mechanism for controlling the movement of the inner rod is provided on the connecting sleeve, a positioning mechanism for positioning the pipe well is provided on the connecting plate, the positioning mechanism includes a screw motor, a positioning strut, a cylinder and a connecting rod, a screw motor is installed in the middle of the bottom of the connecting plate, the screw position of the screw motor can slide up and down in the inner rod, the lower part of the screw of the screw motor is hingedly connected to a plurality of positioning struts at uniform intervals along the circumferential direction, the inside of the screw of the screw motor is hollow, a cylinder is installed on the upper part of the screw, and a connecting rod is hingedly connected between the bottom end of the telescopic rod of the cylinder and the upper part of the positioning strut.

[0006] As an improvement of the above-mentioned scheme, the guide assembly includes a limiting cone block, a return cone block and a limiting ring. The lower part of the inner rod is connected to the limiting cone block, the lower part of the inner rod is slidably connected to the return cone block, the return cone block is located below the limiting cone block, and the lower part of the inner rod is fixedly connected to a limiting ring for limiting the return cone block.

[0007] As an improvement of the above scheme, the pulling mechanism includes a sleeve, a limit block and an elastic member. The sleeve is connected to the bottom of the connecting sleeve, the limit blocks are connected to the sleeve at evenly spaced intervals along the circumferential direction, an inclined surface is provided at the bottom of the limit block, and an elastic member is connected between the limit block and the sleeve.

[0008] As an improvement of the above solution, the positioning support rod is provided with a guide groove corresponding to the thread position on the screw rod, so that a thread groove is formed between the outer surface of the positioning support rod and the lower part of the screw rod.

[0009] As an improvement of the above scheme, an adjustment mechanism is also included, which includes a connecting rod, a spiral disk and a guide rod. Two connecting rods are connected to the side of the sliding frame close to the connecting plate. The middle of the top of the connecting plate is rotatably connected to the spiral disk. The top of the connecting rod is connected to a guide rod, and the guide rod extends into the spiral groove of the spiral disk.

[0010] As an improvement on the above scheme, it also includes a locking mechanism, which includes a liquid storage naan, a connecting pipe, a cylinder body, a ratchet, a locking tooth and two elastic members. The lower part of the inner rod is connected to the liquid storage naan, and the liquid storage naan is located between the limiting cone block and the return cone block. A circular groove is provided on the top of the return cone block, and the circular groove is adapted to the liquid storage naan. Ratchets are connected to the front and rear sides of the rotation point of the support arm, and the two sides of the sliding frame are connected to the cylinder body. The cylinder body is slidably connected with a locking tooth, and the locking tooth can be inserted into the ratchet to lock the support arm. Two elastic members are connected between the locking tooth and the cylinder body. A connecting pipe is connected between the liquid storage naan and the position of the cylinder body close to the connecting plate, and the bottom of the locking tooth is inclined.

[0011] As an improvement of the above solution, a friction plate is also included, and one side of the lower part of the support arm away from the connecting plate is hingedly connected to the friction plate.

[0012] As an improvement of the above solution, it also includes a guide wheel, and the lower part of the positioning support rod is rotatably connected to the guide wheel.

[0013] The beneficial effects of the present invention are as follows: 1. During the process of splicing the pipe wells, the present invention can adjust the position of the entire device by swinging the positioning strut, thereby adjusting the position of the pipe wells so that the two pipe wells are aligned with each other, avoiding the position offset of the pipe wells affecting the splicing, and making the operation more convenient during splicing.

[0014] 2. During the operation of the present invention, it is only necessary to control the connection sleeve to move up and down to achieve the fixing and lifting of the pipe well. The overall operation process is more convenient and the work efficiency is effectively improved.

[0015] 3. During the lifting process, the present invention can lock the support arm through the locking teeth and the ratchet to prevent the support arm from swinging in the opposite direction, thereby achieving the effect of locking the support arm, ensuring stability during operation, and improving safety performance during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention and the crane.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the connecting sleeve, inner rod and connecting plate of the present invention.

[0019] Figure 4 It is a cross-sectional view of the present invention.

[0020] Figure 5 It is a cross-sectional view of the present invention in a hoisting state.

[0021] Figure 6 It is a cross-sectional view of the operating state of the present invention.

[0022] Figure 7 It is a cross-sectional view of the positioning mechanism of the present invention.

[0023] Figure 8 It is a cross-sectional view of the positioning mechanism of the present invention in operation.

[0024] Fig. 9 It is a partial schematic diagram of the positioning mechanism of the present invention after being cut away and operating.

[0025] Fig.10 It is a schematic diagram of the first structure of the regulating mechanism of the present invention.

[0026] Fig.11 This is a second structural schematic diagram of the regulating mechanism of the present invention.

[0027] Fig.12 It is a structural schematic diagram of the locking mechanism of the present invention.

[0028] Fig.13 It is a structural schematic diagram of the locking mechanism of the connecting sleeve and the inner rod after being cut open.

[0029] Fig.14 It is a cross-sectional view of the locking mechanism of the present invention.

[0030] Fig.15 It is a schematic diagram of the connection relationship between the friction plate and the support arm of the present invention.

[0031] Fig.16 It is a schematic diagram of the connection relationship between the guide wheel and the positioning support rod of the present invention.

[0032] Markings in the figure are: 1-crane, 2-pull rope, 3-connecting sleeve, 4-connecting rope, 5-inner rod, 51-limiting cone block, 52-return cone block, 53-limiting ring, 61-sleeve, 62-limiting block, 63-elastic part one, 7-connecting plate, 8-guide rail, 9-sliding frame, 10-support arm, 101-screw motor, 102-positioning support rod, 103-cylinder, 104-connecting rod, 111-connecting rod, 112-spiral disk, 113-guide rod, 121-liquid storage naan, 122-connecting pipe, 123-cylinder body, 124-ratchet, 125-locking tooth, 126-elastic part two, 13-friction plate, 14-guide wheel, 100-tube well. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0034] An auxiliary device for pipe well construction in municipal engineering, such as Figure 1-Figure 9 As shown, it includes a connecting sleeve 3, a connecting rope 4, an inner rod 5, a connecting plate 7, a guide rail 8, a sliding frame 9, a support arm 10, a guide assembly, a lifting mechanism and a positioning mechanism. The end of the pull rope 2 of the crane 1 is connected to the connecting sleeve 3, the inner rod 5 is slidably connected in the connecting sleeve 3, the bottom of the inner rod 5 is connected to the connecting plate 7, three guide rails 8 are evenly spaced along the circumferential direction on the connecting plate 7, each guide rail 8 is slidably connected to a sliding frame 9, and a support arm 10 is rotatably connected to the sliding frame 9. The support arm 10 can rotate to resist the inner wall of the pipe shaft 100, and a connecting rope 4 is connected between the support arm 10 and the upper outer side of the connecting sleeve 3. A guide assembly is provided on the inner rod 5, and a lifting mechanism for controlling the movement of the inner rod 5 is provided on the connecting sleeve 3. A positioning mechanism for positioning the pipe shaft 100 is provided on the connecting plate 7.

[0035] like Figure 4 As shown, the guide assembly includes a limiting cone block 51, a return cone block 52 and a limiting ring 53. The lower part of the inner rod 5 is connected to the limiting cone block 51, and the lower part of the inner rod 5 is slidably connected to the return cone block 52. The return cone block 52 is located below the limiting cone block 51. The lower part of the inner rod 5 is fixedly connected to the limiting ring 53. The limiting ring 53 is located below the return cone block 52 and is used to limit the return cone block 52.

[0036] like Figure 3-Figure 5As shown, the lifting mechanism includes a sleeve 61, a limit block 62 and an elastic member 63. The sleeve 61 is connected to the bottom of the connecting sleeve 3. The limit blocks 62 are evenly spaced along the circumferential direction on the sleeve 61. An inclined surface is provided at the bottom of the limit block 62. The limit block 62 can be stuck between the limit cone block 51 and the return cone block 52. An elastic member 63 is connected between the limit block 62 and the sleeve 61, and the elastic member 63 is a return spring.

[0037] like Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, the positioning mechanism includes a screw motor 101, a positioning support rod 102, a cylinder 103 and a connecting rod 104. The screw motor 101 is installed in the middle of the bottom of the connecting plate 7. The screw position of the screw motor 101 can slide up and down in the inner rod 5. The lower part of the screw of the screw motor 101 is hingedly connected with three positioning support rods 102 at uniform intervals along the circumferential direction. The positioning support rod 102 is provided with a guide groove corresponding to the thread position on the screw, so that a thread groove is formed between the outer surface of the positioning support rod 102 and the lower part of the screw. The inside of the screw of the screw motor is hollow. The cylinder 103 is installed on the upper inner part of the screw. The connecting rod 104 is hingedly connected between the bottom end of the telescopic rod of the cylinder 103 and the upper inner part of the positioning support rod 102, so that the operation of the cylinder 103 can drive the positioning support rod 102 to swing outward through the connecting rod 104.

[0038] When it is necessary to construct the pipe well 100, this auxiliary device can be used. When in use, first use the crane 1 to drive the lifting rope to lift the device above the pipe well 100, and then lower the device. When lowering, the guide rail 8 will resist the pipe well 100. At this time, the guide rail 8, the connecting plate 7 and the inner rod 5 are supported by the pipe well 100 and no longer move downward. Then continue to lower the connecting sleeve 3. At this time, the bottom inclined surface of the limit block 62 is squeezed by the return cone block 52 and moves downward. The elastic member 63 is stretched until the limit block 62 moves to the outer lower part of the return cone block 52. At this time, the crane 1 can be controlled to pull the connecting sleeve 3 upward by the pull rope 2. When the connecting sleeve 3 moves upward, it drives the limit block 62 to move upward. At this time, under the action of the elastic member 63, the limit block 62 When the limit block 62 moves to contact with the limit cone block 51, the limit block 62 presses against the outer surface of the limit cone block 51 and will not be blocked by the limit cone block 51. Then, the limit block 62 continues to move upward and can move out along the outer surface of the limit cone block 51. During the movement, the elastic member 63 gradually drives the limit block 62 to reset, so that the limit block 62 moves out from between the limit cone block 51 and the return cone block 52, thereby unlocking the limit block 62. When the support arm 10 is swung, the support arm 10 can be driven to swing outward to resist the pipe well 100, thereby completing the lifting of the pipe well 100. After the pipe well 100 is hoisted to the foundation pit, the pull rope 2 can be controlled to loosen and the pipe well 100 can be lowered. During the lowering process, the connecting sleeve 3 will be driven to move downward. When the connecting sleeve 3 moves downward, the limit block 62 will move downward. When the limit block 62 moves downward, it can be squeezed by the outer surface of the limit cone block 51 and move outward until it moves between the limit cone block 51 and the return cone block 52, and then it is stuck between the limit cone block 51 and the return cone block 52 under the action of the elastic member 63. At this time, the pipe well 100 is completely lowered, and then Continue to add the pipe well 100, and when placing the subsequent pipe well 100, after hoisting the pipe well 100 to the foundation pit position, the screw motor 101 can be controlled to drive the upper screw to move downward until the lower part of the screw and the positioning support rod 102 move to the inside of the already placed pipe well 100. At this time, the telescopic rod of the cylinder 103 is in an extended state, and then the telescopic rod of the cylinder 103 can be controlled to retract and drive the three positioning support rods 102 to move outwards and against the inner wall of the pipe well 100 through the connecting rod 104. When the positioning support rod 102 moves, if there is a position deviation, the inner wall of the pipe well 100 can be squeezed to adjust the overall position of the device, thereby adjusting the position of the hoisted pipe well 100, so that the two pipe wells 100 are aligned with each other, and then the pipe well 100 is lowered after alignment.After lowering the pipe well 100, the telescopic rod of the cylinder 103 can be extended. In this way, the device can be used to construct the pipe well 100. When placing the pipe well 100, the pipe well 100 placed later can be positioned so that the pipe well 100 placed later is aligned with the pipe well 100 placed previously, which makes the operation more convenient.

[0039] like Fig.10 and Fig.11 As shown, an adjustment mechanism is also included, which includes a connecting rod 111, a spiral disk 112 and a guide rod 113. Two connecting rods 111 are connected to one side of the sliding frame 9 close to the connecting plate 7. The middle of the top of the connecting plate 7 is rotatably connected to the spiral disk 112. The top of the connecting rod 111 is connected to the guide rod 113. The guide rod 113 extends into the spiral groove of the spiral disk 112, so that the spiral disk 112 can squeeze the guide rod 113 to move through the spiral groove when rotating, so as to drive the sliding frame 9 to move through the connecting rod 111, thereby adjusting the position of the sliding frame 9. An operating handle is connected to the eccentric position of the top of the spiral disk 112 to facilitate the operation of the spiral disk 112 to rotate.

[0040] Before lifting the pipe well 100, the position of the support arm 10 can be adjusted according to the size of the pipe well 100 to be lifted. During adjustment, the spiral disk 112 is controlled to rotate to extrude the guide rod 113 outward through the threaded groove thereon. When moving, the guide rod 113 drives the sliding frame 9 to move through the connecting rod 111. When moving, the sliding frame 9 can adjust the position of the support arm 10, thereby controlling the supporting position of the support arm 10.

[0041] like Figure 12-14 As shown, a locking mechanism is also included, which includes a liquid storage naan 121, a connecting pipe 122, a cylinder body 123, a ratchet 124, a locking tooth 125 and an elastic member 126. The lower part of the inner rod 5 is connected to the liquid storage naan 121, and the liquid storage naan 121 is located between the limiting cone block 51 and the return cone block 52. A circular groove is provided on the top of the return cone block 52, and the circular groove is adapted to the liquid storage naan 121 so that the return cone block 52 will not squeeze the liquid storage naan 121 when it moves up. The front and rear sides of the rotation point of the support arm 10 are connected to the ratchet 124, and the front and rear sides of the sliding frame 9 are connected to the cylinder body. 123, a locking tooth 125 is slidably connected in the cylinder body 123, and the locking tooth 125 can be inserted into the ratchet 124 to lock the support arm 10, and an elastic member 126 is connected between the locking tooth 125 and the cylinder body 123, and the elastic member 126 is a compression spring. A connecting pipe 122 is connected between the liquid storage naan 121 and the position of the cylinder body 123 close to the connecting plate 7, and the liquid in the liquid storage naan 121 can enter the cylinder body 123 through the connecting pipe 122 when it is squeezed, thereby squeezing the locking tooth 125 to move to the right, and the bottom of the locking tooth 125 is inclined.

[0042] When the limit block 62 is located between the limit cone block 51 and the return cone block 52, the limit block 62 squeezes the liquid storage naan 121, and the liquid in the liquid storage naan 121 enters the cylinder body 123 through the connecting pipe 122, thereby squeezing the locking tooth 125 to move in the direction away from the ratchet 124, and the elastic member 126 is compressed, so that the locking tooth 125 is disengaged from the ratchet 124. At this time, the pipe well 100 is also in a state where the pipe well 100 is not lifted. During lifting, the limit block 62 is no longer located between the limit cone block 51 and the return cone block 52, and no longer squeezes the liquid storage naan 121. At this time, under the action of the elastic member 126, the locking tooth 125 moves and inserts into the ratchet 124 , and at the same time, the liquid in the cylinder 123 is squeezed back into the liquid storage naan 121, and then the ratchet 124 is driven to rotate when the support arm 10 swings, and the ratchet 124 can repeatedly squeeze the locking tooth 125 through the inclined position of the locking tooth 125. After the ratchet 124 has completed its rotation, the locking tooth 125 can be inserted into the ratchet 124 to clamp the ratchet 124 and the support arm 10. If during operation, the connecting rope 4 breaks and causes the support arm 10 to swing in the opposite direction, at this time, the locking tooth 125 cooperates with the ratchet 124 to fix the support arm 10, thereby avoiding the support arm 10 returning to its original position due to the breakage of the connecting rope 4, thereby playing a role in protecting the overall safety of the device.

[0043] like Fig.15 As shown, a friction plate 13 is also included. The side of the lower part of the support arm 10 away from the connecting plate 7 is hingedly connected with the friction plate 13. When the support arm 10 swings, it can drive the friction plate 13 to swing and contact the inner wall of the pipe well 100. At this time, the support arm 10 applies pressure to the friction plate 13, and the friction plate 13 can increase the contact area with the pipe well 100, increase the friction force, and thus improve the stability when lifting the pipe well 100.

[0044] like Fig.16 As shown, it also includes a guide wheel 14. The lower part of the positioning strut 102 is rotatably connected to the guide wheel 14. After the positioning strut 102 moves to abut against the inner wall of the placed pipe well 100, the positioning strut 102 will move downward when the newly hoisted pipe well 100 is lowered. At this time, the guide wheel 14 can reduce the friction between the positioning strut 102 and the pipe well 100.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An auxiliary device for pipe well construction in municipal engineering, characterized by: The crane (1) comprises a connecting sleeve (3), a connecting rope (4), an inner rod (5), a connecting plate (7), a guide rail (8), a sliding frame (9), a support arm (10), a guide assembly, a lifting mechanism and a positioning mechanism. The end of the pull rope (2) of the crane (1) is connected to the connecting sleeve (3), the inner rod (5) is slidably connected to the connecting sleeve (3), the bottom of the inner rod (5) is connected to the connecting plate (7), a plurality of guide rails (8) are evenly spaced and connected to the connecting plate (7) along the circumferential direction, each guide rail (8) is slidably connected to a sliding frame (9), the sliding frame (9) is rotatably connected to a support arm (10), the support arm (10) can be rotated to abut against the inner wall of the pipe well (100), a connecting rope (4) is connected between the support arm (10) and the upper outer portion of the connecting sleeve (3), the inner rod (5) is provided with a guide assembly, the The connecting sleeve (3) is provided with a lifting mechanism for controlling the movement of the inner rod (5), and the connecting plate (7) is provided with a positioning mechanism for positioning the pipe well (100), the positioning mechanism comprising a screw motor (101), a positioning support rod (102), a cylinder (103) and a connecting rod (104). The screw motor (101) is installed in the middle of the bottom of the connecting plate (7), and the screw of the screw motor (101) can slide up and down in the inner rod (5). The lower part of the screw of the screw motor (101) is hingedly connected to a plurality of positioning support rods (102) at even intervals along the circumferential direction. The interior of the screw of the screw motor (101) is hollow, and the cylinder (103) is installed on the upper part of the screw, and the connecting rod (104) is hingedly connected between the bottom end of the telescopic rod of the cylinder (103) and the upper part of the positioning support rod (102).

2. The auxiliary device for pipe well construction for municipal engineering as claimed in claim 1, characterized in that: The guide assembly comprises a limiting cone block (51), a return cone block (52) and a limiting ring (53); the lower portion of the inner rod (5) is connected to the limiting cone block (51); the lower portion of the inner rod (5) is slidably connected to the return cone block (52); the return cone block (52) is located below the limiting cone block (51); and the lower portion of the inner rod (5) is fixedly connected to the limiting ring (53) for limiting the return cone block (52).

3. The auxiliary device for pipe well construction for municipal engineering as claimed in claim 2, characterized in that: The lifting mechanism comprises a sleeve (61), a limit block (62) and an elastic member (63); the sleeve (61) is connected to the bottom of the connecting sleeve (3); the limit blocks (62) are connected to the sleeve (61) at even intervals along the circumferential direction; an inclined surface is provided at the bottom of the limit block (62); and the elastic member (63) is connected between the limit block (62) and the sleeve (61).

4. The auxiliary device for pipe well construction for municipal engineering as claimed in claim 1, characterized in that: The positioning support rod (102) is provided with a guide groove corresponding to the position of the thread on the screw rod, so that a thread groove is formed between the outer surface of the positioning support rod (102) and the lower part of the screw rod.

5. The auxiliary device for pipe well construction for municipal engineering as claimed in claim 1, characterized in that: It also includes an adjustment mechanism, which includes a connecting rod (111), a spiral disk (112) and a guide rod (113); the sliding frame (9) is connected to two connecting rods (111) on one side close to the connecting plate (7); the spiral disk (112) is rotatably connected to the middle of the top of the connecting plate (7); the top of the connecting rod (111) is connected to a guide rod (113); and the guide rod (113) extends into the spiral groove of the spiral disk (112).

6. The auxiliary device for pipe well construction for municipal engineering as claimed in claim 2, characterized in that: The inner rod (5) further comprises a locking mechanism, wherein the locking mechanism comprises a liquid storage naan (121), a connecting pipe (122), a cylinder body (123), a ratchet (124), a locking tooth (125) and a second elastic member (126). The lower part of the inner rod (5) is connected to the liquid storage naan (121), the liquid storage naan (121) is located between the limiting cone block (51) and the return cone block (52), the return cone block (52) has a circular groove on the top, the circular groove is adapted to the liquid storage naan (121), and the front and rear sides of the rotation point of the support arm (10) are both connected to ratchets. The sliding frame (9) is connected to a cylinder body (123) on both sides, a locking tooth (125) is slidably connected in the cylinder body (123), and the locking tooth (125) can be inserted into the ratchet wheel (124) to lock the support arm (10), an elastic member (126) is connected between the locking tooth (125) and the cylinder body (123), a connecting pipe (122) is connected between the liquid storage naan (121) and the position of the cylinder body (123) close to the connecting plate (7), and the bottom of the locking tooth (125) is inclined.

7. The auxiliary device for pipe well construction for municipal engineering as claimed in claim 1, characterized in that: It also includes a friction plate (13), and one side of the lower part of the support arm (10) away from the connecting plate (7) is hingedly connected to the friction plate (13).

8. The auxiliary device for pipe well construction for municipal engineering as claimed in claim 1, characterized in that: It also includes a guide wheel (14), and the lower part of the positioning support rod (102) is rotatably connected to the guide wheel (14).

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