Lifting and rotating auxiliary device

Abstract

The invention relates to the technical field of pipe fitting polishing, in particular to a lifting and rotating auxiliary device which comprises a base, a lifting mechanism and a rotating mechanism. The lifting mechanism is arranged on the upper surface of the base, the rotating mechanism is fixedly arranged on the upper top wall of the lifting mechanism, the rotating mechanism is connected with a to-be-polished pipe fitting, the lifting mechanism can drive the rotating mechanism to synchronously ascend and descend in the height direction of the rotating mechanism, and the rotating mechanism can drive the pipe fitting to rotate. According to the lifting and rotating auxiliary device, the labor intensity of workers is effectively relieved, the occupational disease risk is reduced, manpower and material resources are saved, the burdens of the workers are relieved, meanwhile, the workers can be assisted in polishing the grooves of the pipe fittings, and the overall construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe fitting grinding, and particularly relates to a lifting and rotating auxiliary device. Background Art

[0002] In many nuclear power installation projects, a large number of pipe fittings need to be grooved and ground to ensure that the pipe fitting grooves meet the requirements.

[0003] Currently, on-site grooving and grinding mainly use a support frame to fix the pipe fittings, and then manually turn and grind the pipe fittings. After the upper groove of the pipe fitting is ground, especially for large pipelines, at least two to three people are required to cooperate to complete the movement, fixation, and multiple rotations of the pipe fittings to ensure that all parts of the pipe fitting are ground. Moreover, the height of the pipe fitting support frame is fixed, and people with a height not matching the height of the support frame need to bend down or adjust the height of the bottom of the support frame. The labor intensity of the grinding workers is relatively high, time-consuming and laborious, and the construction efficiency is too low. Summary of the Invention

[0004] (1) The present invention provides a lifting and rotating auxiliary device to alleviate the technical problems of low construction efficiency and excessive labor intensity of workers in the prior art.

[0005] (2) Technical Solution

[0006] To solve the above technical problems, an embodiment of the present invention provides a lifting and rotating auxiliary device, including a base, a lifting mechanism, and a rotating mechanism;

[0007] The lifting mechanism is arranged on the upper surface of the base, the rotating mechanism is fixedly arranged on the upper top wall of the lifting mechanism, the rotating mechanism is connected to the pipe fitting to be ground, the lifting mechanism can drive the rotating mechanism to lift synchronously along its own height direction, and the rotating mechanism can drive the pipe fitting to rotate.

[0008] Further, the lifting mechanism includes a lifting plate, a lifting rod, a sleeve assembly, and a power assembly;

[0009] The rotating mechanism is arranged on the upper surface of the lifting plate, the sleeve assembly is arranged on the lower bottom surface of the lifting plate, the power assembly is below the lifting plate, the lifting rod is fixedly arranged on the power assembly, and the top end of the lifting rod is fixedly connected to the lower bottom surface of the lifting rod. The power assembly can move along the height direction of the sleeve to adjust the height of the lifting plate synchronously through the lifting rod.

[0010] Further, the sleeve assembly includes four inner sleeves and an outer sleeve. The four inner sleeves and the outer sleeve are rectangularly distributed on the lower bottom surface of the lifting plate. One end of the inner sleeve is fixedly connected to the lifting plate, and the other end is sleeved inside the outer sleeve. The inner sleeve can telescopically move along the height direction of the outer sleeve.

[0011] Further, the power assembly includes a box body, a lead screw, a worm gear, and a first motor.

[0012] A fixing plate is provided below the lifting plate. The box body is arranged below the fixing plate. The lifting rod is fixedly arranged on the outer wall of the box body. The worm gear is arranged inside the box body. The lead screw is connected to the worm gear and passes through the outer wall of the box body 205 at both ends. One end of the lead screw facing the lifting plate is fixedly connected to the fixing plate. The first motor is arranged outside the box body and is in transmission connection with the worm gear.

[0013] Further, the rotating mechanism includes a support assembly, a clamping assembly, a transmission assembly, and a second motor.

[0014] The support assembly is fixedly arranged on the upper surface of the lifting plate. The clamping assembly and the transmission assembly are both arranged on the support assembly. The clamping assembly is used to fix the pipe fitting. The second motor is arranged below the support assembly. One end of the transmission assembly is in transmission connection with the second motor, and the other end is in transmission connection with the clamping assembly.

[0015] Further, the support assembly includes a bottom plate and a connecting plate. The bottom plate is fixedly arranged on the upper surface of the lifting plate. The connecting plate is vertically connected to the bottom plate. The clamping assembly and the transmission assembly are respectively arranged on both sides of the connecting plate.

[0016] Further, the clamping assembly includes a chuck and a connecting pipe. One end of the chuck is threadedly connected to the connecting pipe, and the other end is used to fix the pipe fitting. The end of the connecting pipe facing away from the chuck is threadedly connected to the transmission assembly.

[0017] Further, the transmission assembly includes a first pulley, a second pulley, and a transmission belt. The first pulley is threadedly connected to the end of the connecting pipe facing away from the chuck. The second pulley is in transmission connection with the output end of the second motor. The first pulley and the second pulley are in transmission connection through the transmission belt.

[0018] Further, a plurality of universal casters are installed on the lower bottom wall of the base.

[0019] Further, each universal caster is respectively provided with a braking member.

[0020] Advantages of the present invention:

[0021] A lifting and rotating auxiliary device provided by the present invention comprises a base, a lifting mechanism and a rotating mechanism; the lifting mechanism is arranged on the upper surface of the base, and the rotating mechanism is fixedly arranged on the upper top wall of the lifting mechanism and is connected to the pipe fitting to be polished through the rotating mechanism. That is, first install the pipe fitting to be polished on the rotating mechanism and fix it, then drive the rotating mechanism to lift synchronously along its own height direction through the lifting mechanism, so as to lift the upper surface of the pipe fitting to be polished to a height suitable for the staff to polish. Finally, drive the pipe fitting to be polished to rotate through the rotating mechanism to complete the polishing of the pipe fitting bevel. The whole operation process is very simple and convenient, effectively reducing the labor intensity of the staff, reducing the risk of occupational diseases, saving manpower and material resources and reducing the burden on the staff, while also being able to assist the staff to complete the polishing of the pipe fitting bevel and improve the overall construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of a lifting and rotating auxiliary device provided by an embodiment of the invention;

[0024] Figure 2 It is a schematic diagram of the structure of the lifting mechanism of a lifting and rotating auxiliary device provided by an embodiment of the invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of the box body of a lifting and rotating auxiliary device provided by an embodiment of the invention;

[0026] Figure 4 It is a schematic diagram of the structure of the rotating mechanism of a lifting and rotating auxiliary device provided by an embodiment of the invention;

[0027] Figure 5 It is a schematic diagram of the structure of the transmission component of a lifting and rotating auxiliary device provided by an embodiment of the invention;

[0028] Figure 6 It is a schematic diagram of the connection between the universal caster and the base of a lifting and rotating auxiliary device provided by an embodiment of the invention.

[0029] Reference Signs:

[0030] 100 - Base; 101 - Universal Caster; 102 - Brake Component;

[0031] 200 - Lifting mechanism; 201 - Lifting plate; 202 - Lifting rod; 203 - Inner sleeve; 204 - Outer sleeve; 205 - Box body; 206 - Lead screw; 207 - Worm gear; 208 - First motor; 209 - Fixed plate;

[0032] 300 - Rotating mechanism; 301 - Second motor; 302 - Base plate; 303 - Connecting plate; 304 - Chuck; 305 - Connecting pipe; 306 - First pulley; 307 - Second pulley; 308 - Transmission belt; 309 - Claw; 310 - Crank. Detailed implementation manners

[0033] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0036] As Figures 1 to 6 shown, the present invention provides a lifting and rotating auxiliary device, including a base 100, a lifting mechanism 200, and a rotating mechanism 300; the lifting mechanism 200 is provided on the upper surface of the base 100, the rotating mechanism 300 is fixedly provided on the upper top wall of the lifting mechanism 200, the rotating mechanism 300 is connected to the pipe fitting to be polished, the lifting mechanism 200 can drive the rotating mechanism 300 to lift synchronously along its own height direction, and the rotating mechanism 300 can drive the pipe fitting to rotate.

[0037] In this embodiment, the lifting and rotating auxiliary device includes a base 100, a lifting mechanism 200, and a rotating mechanism 300; the lifting mechanism 200 is arranged on the upper surface of the base 100, and the rotating mechanism 300 is fixedly arranged on the upper top wall of the lifting mechanism 200 and is connected to the pipe fitting to be polished through the rotating mechanism 300. That is, first, the pipe fitting to be polished is installed on the rotating mechanism 300 and fixed, and then the lifting mechanism 200 drives the rotating mechanism 300 to lift synchronously along its own height direction to lift the upper surface of the pipe fitting to be polished to a height suitable for the staff to polish. Finally, the rotating mechanism 300 drives the pipe fitting to be polished to rotate to complete the polishing of the pipe fitting groove. The whole operation process is very simple and convenient, effectively reducing the labor intensity of the staff, reducing the risk of occupational diseases, saving manpower and material resources, and reducing the burden on the staff. At the same time, it can assist the staff to complete the polishing of the pipe fitting groove and improve the overall construction efficiency.

[0038] According to an embodiment provided by the present invention, as Figure 1 , Figure 2 and Figure 3 shown, the lifting mechanism 200 includes a lifting plate 201, a lifting rod 202, a sleeve assembly, and a power assembly; the rotating mechanism 300 is arranged on the upper surface of the lifting plate 201, the sleeve assembly is arranged on the lower bottom surface of the lifting plate 201, the power assembly is below the lifting plate 201, the lifting rod 202 is fixedly arranged on the power assembly, and the top end of the lifting rod 202 is fixedly connected to the lower bottom surface of the lifting rod 202. The power assembly can move along the height direction of the sleeve to synchronously move the lifting plate 201 through the lifting rod 202 to adjust the height of the lifting plate 201.

[0039] In this embodiment, the rotating mechanism 300 is installed on the upper surface of the lifting plate 201. The power assembly drives the lifting rod 202 to move synchronously along the height direction of the sleeve. Since the top end of the lifting rod 202 is fixedly connected to the lower bottom surface of the lifting plate 201, it can drive the lifting plate 201 to lift, and at the same time, it will synchronously drive the rotating mechanism 300 located on the upper surface of the lifting plate 201 to lift to a height suitable for the staff to polish the pipe fitting.

[0040] According to an embodiment provided by the present invention, as Figure 1 , Figure 2 and Figure 3 shown, the sleeve assembly includes four inner sleeves 203 and an outer sleeve 204. The four inner sleeves 203 and the outer sleeve 204 are distributed in a rectangular shape on the lower bottom surface of the lifting plate 201. One end of the inner sleeve 203 is fixedly connected to the lifting plate 201, and the other end is sleeved inside the outer sleeve 204. The inner sleeve 203 can expand and contract along the height direction of the outer sleeve 204.

[0041] In this embodiment, four groups of inner sleeves 203 and outer sleeves 204 are distributed in a rectangular shape on the lower bottom surface of the lifting plate 201, and the inner sleeve 203 can be telescoped along the length direction of the outer sleeve 204. That is to say, the end of the inner sleeve 203 facing away from the outer sleeve 204 is welded and fixed to the lower bottom surface of the lifting plate 201, and the end of the outer sleeve 204 facing away from the inner sleeve 203 is welded and fixed to the base 100. Through the cooperation of the inner sleeve 203 and the outer sleeve 204, a guiding function can be achieved to ensure that the lifting plate 201 can only move up and down, so as to lift the rotating mechanism 300 to a height suitable for the staff to perform grinding.

[0042] According to an embodiment provided by the present invention, as Figure 3 shown, the power assembly includes a box body 205, a lead screw 206, a worm gear 207, and a first motor 208; a fixing plate 209 is provided below the lifting plate 201, the box body 205 is arranged below the fixing plate 209, the lifting rod 202 is fixedly arranged on the outer wall of the box body 205, the worm gear 207 is arranged inside the box body 205, the lead screw 206 is connected to the worm gear 207 and both ends thereof pass through the outer wall of the box body 205, and one end of the lead screw 206 facing the lifting plate 201 is fixedly connected to the fixing plate 209. The first motor 208 is arranged outside the box body 205 and is in transmission connection with the worm gear 207.

[0043] In this embodiment, a fixing plate 209 is further arranged below the lifting plate 201, a box body 205 is arranged below the fixing plate 209, the lifting rod 202 is welded and fixed on the outer wall of the box body 205, and the other end of the lifting rod 202 passes through the fixing plate 209 and is fixedly connected to the lower bottom wall of the lifting plate 201. The box body 205 is made of an iron plate and is used to place the worm gear 207 and the lead screw 206. The worm gear 207 is in transmission connection with the output end of the first motor 208 through a worm. The motor provides power for the entire lifting mechanism 200. A nut is welded to the center of the worm gear 207 for connecting with the lead screw 206. Both ends of the lead screw 206 pass through the box body 205 and are respectively fixedly connected to the lower bottom wall of the lifting plate 201 and the upper surface of the base 100. Through the transmission cooperation of the worm gear 207 and the lead screw 206, the position of the box body 205 on the lead screw 206 is changed, and the lifting rod 202 outside the box body 205 is used to drive the lifting plate 201 to lift and lower.

[0044] According to an embodiment provided by the present invention, as Figure 1 、 Figure 4 and Figure 5 shown, the rotating mechanism 300 includes a support assembly, a clamping assembly, a transmission assembly, and a second motor 301; the support assembly is fixedly arranged on the upper surface of the lifting plate 201, the clamping assembly and the transmission assembly are both arranged on the support assembly, the clamping assembly is used to fix the pipe fitting, the second motor 301 is arranged below the support assembly, one end of the transmission assembly is in transmission connection with the second motor 301, and the other end is in transmission connection with the clamping assembly.

[0045] In this embodiment, the support assembly is fixedly installed on the upper surface of the lifting plate 201. At the same time, the clamping assembly and the transmission assembly are both arranged on the support assembly. Thus, the lifting mechanism 200 can drive the rotating mechanism 300 to lift synchronously. The staff can adjust the lifting mechanism 200 to drive the rotating mechanism 300, ensuring that the upper surface of the pipe fitting is at a height convenient for grinding for grinding. Finally, the second motor 301 drives the transmission assembly to rotate, and the transmission assembly drives the clamping assembly to rotate synchronously, thereby enabling the pipe fitting to rotate to ensure the construction efficiency.

[0046] According to an embodiment provided by the present invention, as Figure 1 and Figure 4 shown, the support assembly includes a bottom plate 302 and a connecting plate 303. The bottom plate 302 is fixedly arranged on the upper surface of the lifting plate 201, and the connecting plate 303 is vertically connected to the bottom plate 302. The clamping assembly and the transmission assembly are respectively arranged on both sides of the connecting plate 303.

[0047] In this embodiment, the bottom plate 302 is connected and fixed to the lifting plate 201 by bolts, and the connecting plate 303 is vertically installed on the bottom plate 302, so that the clamping assembly and the transmission assembly can be correspondingly installed on both sides of the connecting plate 303, enabling the second motor 301 to drive the transmission assembly and the clamping assembly to rotate synchronously to achieve the rotation function of driving the pipe fitting to rotate.

[0048] According to an embodiment provided by the present invention, as Figure 1 、 Figure 4 and Figure 5 shown, the clamping assembly includes a chuck 304 and a connecting pipe 305. One end of the chuck 304 is threadedly connected to the connecting pipe 305, and the other end is used to fix the pipe fitting. The end of the connecting pipe 305 facing away from the chuck 304 is threadedly connected to the transmission assembly.

[0049] In this embodiment, one end of the chuck 304 is threadedly connected to the connecting pipe 305, and the other end fixes the pipe fitting. Since the end of the connecting pipe 305 facing away from the chuck 304 is threadedly connected to the transmission assembly, the transmission assembly can be driven to rotate by the second motor 301, and finally transmitted to the chuck 304 through the connecting pipe 305 to drive the pipe fitting in the chuck 304 to rotate.

[0050] Optionally, two connecting plates 303 may be provided. The two connecting plates 303 are spaced along the length direction of the bottom plate 302. The connecting pipe 305 is arranged between the two connecting plates 303. A chuck 304 and a transmission assembly are respectively arranged on the two sides of the two connecting plates 303 facing away from the connecting pipe 305. At the same time, in order to ensure the detachability of the connecting pipe 305 and the chuck 304, the connecting plate 303 is set as two independent upper and lower parts. A groove is provided on the adjacent side of the upper and lower parts, which is convenient for assembly. At least six rotary bearings are arranged at the groove to prevent the support pipe from shifting while ensuring the rotatability of the chuck 304, and the upper and lower parts of the connecting plate 303 are fixed by screws. The lower half of the connecting plate 303 is directly fixed on the upper surface of the bottom plate 302 by welding.

[0051] Certainly, the chuck 304 is provided in a hollow shape, that is, the inside of the chuck 304 is hollow, and one end facing away from the connecting pipe 305 is open. During use, the pipe fitting is placed in the opening, and is fixed by the clamping claws 309 arranged circumferentially on the chuck 304. A crank 310 is arranged on the side wall of the chuck 304, and the crank 310 can drive the clamping claws 309 to move towards the pipe fitting to clamp the pipe fitting in the chuck 304 for subsequent rotation and grinding operations. At the same time, the chuck 304 can be adapted to pipe fittings with different pipe diameters through the clamping claws 309, enhancing the overall applicability.

[0052] According to an embodiment provided by the present invention, as Figure 1 、 Figure 4 and Figure 5 shown, the transmission assembly includes a first pulley 306, a second pulley 307 and a transmission belt 308. The first pulley 306 is threadedly connected to the end of the connecting pipe 305 facing away from the chuck 304. The second pulley 307 is drivingly connected to the output end of the second motor 301. The first pulley 306 and the second pulley 307 are drivingly connected by the transmission belt 308.

[0053] In this embodiment, the power is transmitted from the output end of the second motor 301 to the second pulley 307. The second pulley 307 and the first pulley 306 are drivingly connected by the transmission belt 308. Then, driven by the second pulley 307, the first pulley 306 rotates synchronously. At the same time, since the first pulley 306 is threadedly connected to the end of the connecting pipe 305 facing away from the chuck 304, the first pulley 306 can synchronously drive the connecting pipe 305 to rotate. Finally, the chuck 304 is synchronously driven to rotate by the connecting pipe 305, so as to realize the synchronous rotation of the first pulley 306, the second pulley 307, the connecting pipe 305 and the chuck 304 driven by the second motor 301, thereby realizing the rotation function of the rotating mechanism 300 and driving the pipe fitting to rotate for grinding, thus improving the construction efficiency.

[0054] According to an embodiment provided by the present invention, as Figure 1 andFigure 6 As shown, a plurality of universal casters 101 are installed on the lower bottom wall of the base 100.

[0055] In this embodiment, in order to enable the lifting and rotating auxiliary device provided in this embodiment to achieve the moving function, the base 100 is set as a movable base 100. That is to say, a plurality of universal casters 101 are installed on the lower bottom wall of the base 100 and fixed to the base 100 by bolts, and the base 100 is moved by manual pushing in cooperation with the universal casters 101.

[0056] Certainly, the base 100 is preferably set in a rectangular shape. Correspondingly, four universal casters 101 are provided, and the four universal casters 101 are symmetrically arranged at the four vertices of the base 100 to ensure the stability and convenience of movement.

[0057] According to an embodiment provided by the present invention, as Figure 1 and Figure 6 shown, each universal caster 101 is respectively provided with a braking member 102.

[0058] In this embodiment, in order to ensure the safety of pipe fitting grinding, each universal caster 101 is respectively provided with a braking member 102 to ensure the braking function of the base 100.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lifting and rotating auxiliary device, characterized in that: It comprises a base (100), a lifting mechanism (200) and a rotating mechanism (300); The lifting mechanism (200) is arranged on the upper surface of the base (100), the rotating mechanism (300) is fixedly arranged on the upper top wall of the lifting mechanism (200), the rotating mechanism (300) is connected to the pipe to be polished, the lifting mechanism (200) can drive the rotating mechanism (300) to be lifted and lowered synchronously along its own height direction, and the rotating mechanism (300) can drive the pipe to rotate.

2. The lifting and rotating auxiliary device according to claim 1, characterized in that: The lifting mechanism (200) shown comprises a lifting plate (201), a lifting rod (202), a sleeve assembly and a power assembly; The upper surface of the lifting plate (201) is provided with the rotating mechanism (300), the lower bottom surface of the lifting plate (201) is provided with the sleeve assembly, the power assembly is below the lifting plate (201), the lifting rod (202) is fixed to the power assembly, and the top end of the lifting rod (202) is fixedly connected to the lower bottom surface of the lifting rod (202), and the power assembly can move along the height direction of the sleeve to adjust the height of the lifting plate (201) through the synchronous movement of the lifting rod (202).

3. The lifting and rotating auxiliary device according to claim 2, characterized in that: The sleeve assembly comprises four groups of inner sleeves (203) and outer sleeves (204); the four groups of inner sleeves (203) and outer sleeves (204) are distributed in a rectangular shape on the lower bottom surface of the lifting plate (201); one end of the inner sleeve (203) is fixedly connected to the lifting plate (201), and the other end is sleeved inside the outer sleeve (204); the inner sleeve (203) can be extended and retracted along the height direction of the outer sleeve (204).

4. The lifting and rotating auxiliary device according to claim 3, characterized in that: The power assembly comprises a housing (205), a screw rod (206), a worm gear (207) and a first motor (208); A fixed plate (209) is provided below the lifting plate (201); the box body (205) is provided below the fixed plate (209); the lifting rod (202) is fixedly provided on the outer wall of the box body (205); the worm wheel (207) is provided in the box body (205); the screw rod (206) is connected to the worm wheel (207), and both ends thereof pass through the outer wall of the box body (205); one end of the screw rod (206) facing the lifting plate (201) is fixedly connected to the fixed plate (209); and the first motor (208) is provided on the outer side of the box body (205) and is drivingly connected to the worm wheel (207).

5. The lifting and rotating auxiliary device according to claim 2, characterized in that: The rotating mechanism (300) comprises a supporting assembly, a clamping assembly, a transmission assembly and a second motor (301); The support assembly is fixedly mounted on the upper surface of the lifting plate (201); the clamping assembly and the transmission assembly are both mounted on the support assembly; the clamping assembly is used to fix the pipe; the second motor (301) is disposed below the support assembly; one end of the transmission assembly is transmission-connected to the second motor (301); and the other end is transmission-connected to the clamping assembly.

6. The lifting and rotating auxiliary device according to claim 5, characterized in that: The supporting assembly comprises a bottom plate (302) and a connecting plate (303); the bottom plate (302) is fixedly arranged on the upper surface of the lifting plate (201); the connecting plate (303) is vertically connected to the bottom plate (302); and the clamping assembly and the transmission assembly are respectively arranged on both sides of the connecting plate (303).

7. The lifting and rotating auxiliary device according to claim 6, characterized in that: The clamping assembly comprises a clamping disc (304) and a connecting tube (305); one end of the clamping disc (304) is threadedly connected to the connecting tube (305), and the other end is used to fix the pipe fitting; and one end of the connecting tube (305) away from the clamping disc (304) is threadedly connected to the transmission assembly.

8. The lifting and rotating auxiliary device according to claim 7, characterized in that: The transmission assembly comprises a first pulley (306), a second pulley (307) and a transmission belt (308); the first pulley (306) is threadedly connected to an end of the connecting tube (305) away from the chuck (304); the second pulley (307) is transmission-connected to an output end of the second motor (301); the first pulley (306) and the second pulley (307) are transmission-connected via the transmission belt (308).

9. The lifting and rotating auxiliary device according to any one of claims 1 to 8, characterized in that: A plurality of universal casters (101) are installed on the lower bottom wall of the base (100).

10. The lifting and rotating auxiliary device according to claim 9, characterized in that: Each of the universal casters (101) is provided with a brake component (102).

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