Building engineering pipeline welding and grinding device

Abstract

The invention relates to the technical field of pipeline welding, in particular to a constructional engineering pipeline welding and grinding device which comprises a base and electric push rods fixedly connected to the two opposite sides of the upper end of the base, clamping pieces are fixedly connected to the ends, away from the base, of the electric push rods, pipeline bodies are clamped in the clamping pieces, and rotating wheels are rotationally arranged on the base. According to the building engineering pipeline welding and grinding device, the air bag is tightly attached to the inner wall of the pipeline body, ground waste cannot enter the pipeline body, the follow-up cleaning difficulty is reduced, when the pipeline body is tightly attached to the grinding rod, the grinding rod can grind the pipeline body, and when the pipeline body is away from the grinding rod, the grinding rod can grind the pipeline body. And the polishing rod can scrape and clean the outer wall of the air bag to prevent adhesion, and when the polishing rod is cleaned, gas leaked out of the air bag is reused, so that sweeps or liquid adhered to the air bag and the polishing rod can be blown off, and the cleaning effect of the polishing rod is further enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline welding, and specifically to a pipeline welding and grinding device for construction engineering. Background Art

[0002] Pipelines are widely used, mainly in industries such as heating, gas supply, long-distance transportation of oil and natural gas, and water conservancy projects. They are an indispensable part of construction. During construction, pipelines often need to be welded, and there are many welding methods. Arc welding is a commonly used welding method in current construction.

[0003] Generally, there will be a certain amount of rust on the outer surface of metal pipelines during long-term placement. If the rust on the outer surface of the metal pipeline is not removed during welding, it will affect the welding effect of the metal pipeline. In the prior art, on the construction site, the welding joints of two pipelines are usually directly ground flat, but grinding may generate a lot of dust and waste chips that will scatter into the pipeline. If not removed in time, after welding, the dust and waste chips in the longer pipeline are not easy to clean. If a dust removal device is used for adsorption during grinding, although the waste chips and dust can usually be effectively removed, a vacuum pump is still needed, which will occupy a lot of space. And when grinding the used pipeline, if there is residual liquid in the pipeline, then the waste chips and dust may adhere to the inner wall of the pipeline. At this time, when using a dust suction device, the dust suction effect will be greatly reduced. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a pipeline welding and grinding device for construction engineering.

[0005] The present invention adopts the following technical solutions. A pipeline welding and grinding device for construction engineering includes a base and electric push rods fixedly connected to two opposite sides of the upper end of the base. One end of the electric push rod away from the base is fixedly connected with a clamping member, and a pipeline body is clamped in the clamping member. A runner is rotatably arranged on the base, and the runner is located in the middle of the two clamping members on both sides. External teeth are fixedly connected to the outer wall of the runner, and a motor is fixedly connected to the outer wall of the bottom end of the base. The output end of the motor is fixedly connected with a second gear, and the second gear is rotatably arranged in the base. The second gear is meshed and connected with the external teeth. It further includes:

[0006] A waste chip prevention mechanism for preventing waste chips from splashing deep into the pipeline. The waste chip prevention mechanism is arranged in the runner and includes an airbag;

[0007] A grinding rod that can both grind the pipeline welding joint and clean the waste chips on the airbag. The grinding rod is arranged in the waste chip prevention mechanism;

[0008] An air jet mechanism that can clean the surface of the airbag through the gas discharged from the airbag. The air jet mechanism is arranged in the runner;

[0009] and a steering mechanism capable of using the smoother end of the polishing rod when cleaning the airbag, the steering mechanism being arranged inside the waste chip prevention mechanism.

[0010] As a further description of the above technical solution: The waste chip prevention mechanism includes connecting columns fixed to the centers of two opposite ends of the runner. An airbag is bonded to the connecting columns. Polishing rods are provided at both opposite ends of the runner. A sliding frame is slidably arranged on the side of the polishing rod close to the runner, and a first spring is fixedly connected between one end of the sliding frame and the runner. A rotating block is rotatably arranged at one end of the sliding frame close to the polishing rod. The polishing rod is rotatably arranged on the rotating block. A blocking rod is provided above the rotating block. One end of the central axis of the rotating block is fixedly connected with a first gear, and a toothed rod is meshed and connected above the first gear. The toothed rod is fixedly connected inside the runner. The central axis of the rotating block is rotatably arranged inside the rotating block and is rotatably arranged inside the sliding frame. One end of the sliding frame far from the polishing rod is fixedly connected with a sliding plate. An air storage sleeve is sleeved outside the sliding plate. A first guide groove is opened at the bottom end on the side of the air storage sleeve far from the polishing rod, and the other end of the first guide groove communicates with the inner cavity of the airbag. A limiting groove is opened on the inner wall of the air storage sleeve. One end of the sliding plate is movably inserted with a limiting block, and a second spring is fixedly connected between one end of the limiting block and the sliding plate. One side of the limiting block is movably inserted with a squeezing rod, and a third spring is fixedly connected between one end of the squeezing rod and the sliding plate.

[0011] As a further description of the above technical solution: The air jetting mechanism includes a fixed rod fixed to the upper surface of the bottom end of the base. A sliding disk is horizontally slidably arranged inside the connecting column. The sliding disk is fixedly connected to the air storage sleeve. An extrusion block is fixedly connected to the end of the sliding disk far from the air storage sleeve, and a movable plate is arranged on one side of the extrusion block. The movable plate is slidably arranged inside the connecting column. A fourth spring is fixedly connected between one end of the movable plate and the connecting column. The extrusion block is slidably arranged on the movable plate, and a fifth spring is fixedly connected between the end of the extrusion block far from the sliding disk and the movable plate. A second guide groove and a third guide groove are respectively opened on the connecting column and the movable plate, and one end of the second guide groove communicates with the inner cavity of the airbag.

[0012] As a further description of the above technical solution: The steering mechanism includes a torsion block rotatably arranged inside the rotating block, and a sixth spring is fixedly connected between one end of the torsion block and the rotating block. A fixed block is fixedly connected to the sliding frame. One end of the outer wall of the central axis of the rotating block is rotatably arranged with an adapter block, and a rotating shaft is fixedly connected to one end of the adapter block. The rotating shaft is rotatably arranged inside the central axis of the rotating block. A pull rope is wound around the outer wall of the rotating shaft, and one end of the pull rope is fixedly connected to the torsion block. The torsion block is fixedly connected to the polishing rod, and an arc portion is provided on the polishing rod.

[0013] As a further description of the above technical solution: A plurality of the polishing rods on both sides are arranged at equal intervals in a ring shape.

[0014] As a further description of the above technical solution: The polishing rod is in an inclined state when being extruded by the pipe body.

[0015] As a further description of the above technical solution: A nut is threadedly connected to the outer wall of the central axis of the rotating block, and the nut is located on two opposite sides of the rotating block.

[0016] As a further description of the above technical solution: The third guide groove and the second guide groove are located on the same horizontal plane.

[0017] The present invention provides an improved pipeline welding and grinding device for construction engineering. Compared with the prior art, it has the following improvements and advantages:

[0018] First: When the pipeline body presses on the grinding rod, the grinding rod will be compressed into the rotating wheel, so that the sliding frame can press the sliding plate inward, thereby squeezing the gas in the inner cavity of the air storage sleeve into the inner cavity of the airbag through the first guide groove, causing the airbag to start to expand, and then the airbag is closely attached to the inner wall of the pipeline body, and the grinding waste will not enter the pipeline body;

[0019] Second: The gas in the airbag will be instantaneously ejected outward through the third guide groove, and the ejected gas will blow off the waste chips adhered to the airbag and the grinding rod, further enhancing the cleaning effect of the grinding rod;

[0020] Third: The pull rope pulls the torsion block to one side, thereby driving the grinding rod to rotate, so that the arc portion abuts against the outer wall of the airbag, preventing the friction force of the grinding surface on the grinding rod from being too large and wearing out the airbag;

[0021] In summary, the airbag is closely attached to the inner wall of the pipeline body, and the grinding waste will not enter the pipeline body, reducing the subsequent cleaning difficulty. When the pipeline body is in close contact with the grinding rod, the grinding rod can grind the pipeline body. When the pipeline body is far away from the grinding rod, the grinding rod can scrape and clean the outer wall of the airbag to prevent adhesion. Moreover, when the grinding rod is cleaned, the gas leaking from the airbag is reused, and the waste chips or liquids adhered to the airbag and the grinding rod can be blown off, further enhancing the cleaning effect of the grinding rod. And when the grinding rod moves outwards, the arc portion abuts against the outer wall of the airbag, preventing the friction force of the grinding surface on the grinding rod from being too large and wearing out the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following further explains the present invention with reference to the drawings and embodiments:

[0023] Figure 1 It is a schematic structural diagram of a pipeline welding and grinding device for construction engineering provided by an embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the grinding rod provided by an embodiment of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the fixing rod provided by an embodiment of the present invention;

[0026] Figure 4 Is a three-dimensional sectional view of the runner provided by the embodiment of the present invention;

[0027] Figure 5 Is a three-dimensional sectional view of the connecting column provided by the embodiment of the present invention;

[0028] Figure 6 Is a three-dimensional sectional view of the air storage sleeve provided by the embodiment of the present invention;

[0029] Figure 7 Is a structural schematic diagram of the first gear provided by the embodiment of the present invention;

[0030] Figure 8 Is a structural schematic diagram of the fixed block provided by the embodiment of the present invention;

[0031] Figure 9 Is a structural schematic diagram of the rotating shaft provided by the embodiment of the present invention;

[0032] Figure 10 Is Figure 4 The enlarged view at position A in;

[0033] Figure 11 Is Figure 4 The enlarged view at position B in;

[0034] Figure 12 Is Figure 5 The enlarged view at position C in;

[0035] Figure 13 Is Figure 6 The enlarged view at position D in.

[0036] In the figure: 1, base; 2, electric push rod; 3, clamping member; 4, pipe body; 5, runner; 6, external teeth; 7, motor; 8, anti-waste chip mechanism; 81, connecting column; 82, grinding rod; 83, airbag; 84, air storage sleeve; 85, sliding plate; 86, first guide groove; 87, rotating block; 88, sliding frame; 89, first spring; 810, blocking rod; 811, limiting groove; 812, limiting block; 813, second spring; 814, squeezing rod; 815, third spring; 816, first gear; 817, toothed rod; 9, jet mechanism; 91, fixed rod; 92, sliding disk; 93, second guide groove; 94, movable plate; 95, fourth spring; 96, third guide groove; 97, extrusion block; 98, fifth spring; 10, steering mechanism; 101, torsion block; 102, sixth spring; 103, fixed block; 104, connecting block; 105, rotating shaft; 106, pulling rope; 107, arc portion; 11, second gear. Specific embodiments

[0037] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0038] Please refer to Figure 1 - Figure 13 , an embodiment of the present invention provides a technical solution: a welding and grinding device for building engineering pipelines, including a base 1 and electric push rods 2 fixedly connected to two opposite sides of the upper end of the base 1, and a clamping member 3 is fixedly connected to the end of the electric push rod 2 away from the base 1. A pipeline body 4 is clamped in the clamping member 3. A runner 5 is rotatably provided on the base 1, and the runner 5 is located in the middle of the two clamping members 3 on both sides. An external gear 6 is fixedly connected to the outer wall of the runner 5. A motor 7 is fixedly connected to the outer wall of the bottom end of the base 1. A second gear 11 is fixedly connected to the output end of the motor 7, and the second gear 11 is rotatably provided in the base 1. The second gear 11 is meshed with the external gear 6. It further includes:

[0039] A waste chip prevention mechanism 8 for preventing waste chips from splashing into the deep inside of the pipeline. The waste chip prevention mechanism 8 is arranged in the runner 5, and the waste chip prevention mechanism 8 includes an airbag 83;

[0040] A grinding rod 82, which can not only grind the welded part of the pipeline, but also clean the waste chips on the airbag 83. The grinding rod 82 is arranged in the waste chip prevention mechanism 8;

[0041] An air jet mechanism 9, which can clean the surface of the airbag 83 through the gas discharged from the airbag 83. The air jet mechanism 9 is arranged in the runner 5;

[0042] And a steering mechanism 10, which can make the smoother end of the grinding rod 82 be used when cleaning the airbag 83. The steering mechanism 10 is arranged in the waste chip prevention mechanism 8.

[0043] A plurality of grinding rods 82 are arranged at equal intervals in a ring shape on both sides.

[0044] Specifically, the airbag 83 is closely attached to the inner wall of the pipeline body 4, and the waste generated by grinding will not enter the pipeline body 4, reducing the subsequent cleaning difficulty. When the pipeline body 4 is closely attached to the grinding rod 82, the grinding rod 82 can grind the pipeline body 4. When the pipeline body 4 is far away from the grinding rod 82, the grinding rod 82 can scrape and clean the outer wall of the airbag 83 to prevent adhesion. And when the grinding rod 82 is cleaning, the gas leaked from the airbag 83 can be reused, and the waste chips or liquid adhered to the airbag 83 and the grinding rod 82 can be blown off, further enhancing the cleaning effect of the grinding rod 82. And when the grinding rod 82 moves outwards, the arc-shaped part 107 abuts against the outer wall of the airbag 83, preventing the friction force of the grinding surface on the grinding rod 82 from being too large and damaging the airbag 83.

[0045] In another embodiment provided by the present invention, the anti-waste chip mechanism 8 includes connecting columns 81 fixedly connected to the centers of two opposite ends of the runner 5. An airbag 83 is bonded to the connecting columns 81. Grinding rods 82 are provided at both opposite ends of the runner 5. A sliding frame 88 is slidably arranged on one side of the grinding rod 82 close to the runner 5. One end of the sliding frame 88 and the runner 5 are fixedly connected by a first spring 89. A rotating block 87 is rotatably arranged at one end of the sliding frame 88 close to the grinding rod 82. The grinding rod 82 is rotatably arranged on the rotating block 87. A blocking rod 810 is arranged above the rotating block 87. One end of the central axis of the rotating block 87 is fixedly connected with a first gear 816. A rack 817 is meshed and connected above the first gear 816. The rack 817 is fixedly connected inside the runner 5. The central axis of the rotating block 87 is rotatably arranged inside the rotating block 87 and is rotatably arranged inside the sliding frame 88. One end of the sliding frame 88 far from the grinding rod 82 is fixedly connected with a sliding plate 85. A gas storage sleeve 84 is sleeved outside the sliding plate 85. A first guide groove 86 is opened at the bottom end of one side of the gas storage sleeve 84 far from the grinding rod 82. The other end of the first guide groove 86 is communicated with the inner cavity of the airbag 83. A limiting groove 811 is opened on the inner wall of the gas storage sleeve 84. One end of the sliding plate 85 is movably inserted with a limiting block 812. One end of the limiting block 812 and the sliding plate 85 are fixedly connected by a second spring 813. One side of the limiting block 812 is movably inserted with an extrusion rod 814. One end of the extrusion rod 814 and the sliding plate 85 are fixedly connected by a third spring 815.

[0046] When the grinding rod 82 is extruded by the pipe body 4, it is in an inclined state.

[0047] A nut is threadedly connected to the outer wall of the central axis of the rotating block 87, and the nut is located on two opposite sides of the rotating block 87.

[0048] Specifically, when the pipe body 4 extrudes the grinding rod 82, the grinding rod 82 will be compressed into the runner 5, so that the sliding frame 88 can press the sliding plate 85 inward, thereby squeezing the gas in the inner cavity of the gas storage sleeve 84 into the inner cavity of the airbag 83 through the first guide groove 86, causing the airbag 83 to start to expand. Then, the airbag 83 is closely attached to the inner wall of the pipe body 4, and the waste generated by grinding will not enter the pipe body 4.

[0049] In another embodiment provided by the present invention, the air jet mechanism 9 includes a fixed rod 91 fixedly connected to the upper surface of the bottom end of the base 1. A sliding disk 92 is horizontally slidably arranged inside the connecting column 81. The sliding disk 92 is fixedly connected to the gas storage sleeve 84. An extrusion block 97 is fixedly connected to one end of the sliding disk 92 far from the gas storage sleeve 84. An activity plate 94 is arranged on one side of the extrusion block 97. The activity plate 94 is slidably arranged inside the connecting column 81. One end of the activity plate 94 and the connecting column 81 are fixedly connected by a fourth spring 95. The extrusion block 97 is slidably arranged on the activity plate 94. One end of the extrusion block 97 far from the sliding disk 92 and the activity plate 94 are fixedly connected by a fifth spring 98. A second guide groove 93 and a third guide groove 96 are respectively opened on the connecting column 81 and the activity plate 94. One end of the second guide groove 93 is communicated with the inner cavity of the airbag 83.

[0050] The guide groove three 96 and the guide groove two 93 are located on the same horizontal plane.

[0051] Specifically, the gas in the airbag 83 will instantaneously spray outwards through the guide groove three 96, and the sprayed gas will blow off the waste chips adhering to the airbag 83 and the grinding rod 82, further enhancing the cleaning effect of the grinding rod 82.

[0052] In another embodiment provided by the present invention, the steering mechanism 10 includes a torsion block 101 rotatably arranged in the rotating block 87, and a spring six 102 is fixedly connected between one end of the torsion block 101 and the rotating block 87. A fixed block 103 is fixedly connected to the sliding frame 88. One end of the outer wall of the central axis of the rotating block 87 is rotatably provided with an adapter block 104, and a rotating shaft 105 is fixedly connected to one end of the adapter block 104. The rotating shaft 105 is rotatably arranged in the central axis of the rotating block 87. A pull rope 106 is wound around the outer wall of the rotating shaft 105, and one end of the pull rope 106 is fixedly connected to the torsion block 101. The torsion block 101 is fixedly connected to the grinding rod 82, and an arc portion 107 is provided on the grinding rod 82.

[0053] Specifically, the pull rope 106 pulls the torsion block 101 to one side, thereby driving the grinding rod 82 to rotate, so that the arc portion 107 abuts against the outer wall of the airbag 83, preventing the frictional force of the grinding surface on the grinding rod 82 from being too large and damaging the airbag 83.

[0054] Working principle: When in use, first move the movable pipe body 4 away, then place the connecting column 81 in the inner cavities of the two pipe bodies 4 on both sides, and then clamp the pipe body 4 through the clamping member 3. When grinding is required, start the electric push rod 2 to make the pipe bodies 4 on both sides closely adhere to the grinding rod 82 on the rotating wheel 5. When the pipe body 4 squeezes the grinding rod 82, the grinding rod 82 will be compressed into the rotating wheel 5, so that the sliding frame 88 can press the sliding plate 85 inwards, thereby squeezing the gas in the inner cavity of the gas storage sleeve 84 into the inner cavity of the airbag 83 through the guide groove one 86, causing the airbag 83 to start to expand, and then the airbag 83 closely adheres to the inner wall of the pipe body 4. Then start the motor 7, and through the transmission of the gear two 11 and the external teeth 6, the grinding rod 82 grinds the end of the pipe body 4. At this time, the grinding waste will not enter the pipe body 4;

[0055] After grinding, the movable pipe body 4 is moved away by the electric push rod 2, and then the clamping member 3 is removed. When the pipe bodies 4 at both ends are far away from the runner 5, the grinding rod 82 will reset under the action of the first spring 89. When the grinding rod 82 moves to the outside, due to the transmission of the toothed rod 817 and the first gear 816, the grinding rod 82 will rotate to a vertical state. When the sliding plate 85 is pressed inward, the limiting block 812 will be bounced into the limiting groove 811. Therefore, when the sliding plate 85 resets later, it will drive the air storage sleeve 84 to move outward together, so that the gas in the airbag 83 will not leak. Then, the motor 7 is started to make the runner 5 rotate slowly. At this time, the grinding rod 82 can scrape off the waste chips adhered to the airbag 83 to prevent adhesion;

[0056] When the grinding rod 82 scrapes the waste chips, the runner 5 continues to rotate. At this time, the extrusion block 97 is pressed by the sliding disk 92 to the side close to the third guide groove 96. When the extrusion block 97 rotates to the bottom side, the extrusion block 97 will be pressed by the fixed rod 91. Then, the extrusion block 97 and the movable plate 94 move toward the direction of the second guide groove 93, so that the second guide groove 93 and the third guide groove 96 are connected. When they are connected, the gas in the airbag 83 will instantaneously spray out through the third guide groove 96. The sprayed gas will blow off the waste chips adhered to the airbag 83 and the grinding rod 82, further enhancing the cleaning effect of the grinding rod 82;

[0057] And when the grinding rod 82 moves outwards, when the connecting block 104 rotates, it will be blocked by the fixed block 103, so that the rotating shaft 105 rotates relative to the central axis of the rotating block 87. Thus, the pulling rope 106 pulls the torsion block 101 to one side, and then drives the grinding rod 82 to rotate, so that the arc portion 107 abuts against the outer wall of the airbag 83, preventing the friction force of the grinding surface on the grinding rod 82 from being too large and damaging the airbag 83;

[0058] After cleaning, the airbag 83 will gradually deflate, and the grinding rod 82 will continue to move outwards for reset. At this time, the extrusion rod 814 will be pressed by the runner 5, so that the extrusion rod 814 compresses the limiting block 812 inward, so that the limiting block 812 disengages from the limiting groove 811. The air storage sleeve 84 and the sliding plate 85 are both reset. At this time, the runner 5 is still rotating, and part of the gas outside and in the airbag 83 will enter the inner cavity of the air storage sleeve 84.

[0059] It should be noted that when the grinding rod 82 grinds, the pipe body 4 rotates clockwise relative to the grinding rod 82, so that the torsion block 101 presses toward the end away from the sixth spring 102. Therefore, the grinding rod 82 will not rotate at this time;

[0060] The inclination angle of the rotating block 87 can be adjusted by the nuts on the two opposite sides of the rotating block 87 to enhance its practicability.

[0061] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the descriptions in the above embodiments and the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe welding and grinding device for construction engineering, comprising a base (1) and electric push rods (2) fixedly connected to two opposite sides of the upper end of the base (1), and a clamping member (3) is fixedly connected to the end of the electric push rod (2) away from the base (1). A pipe body (4) is clamped in the clamping member (3). A runner (5) is rotatably arranged on the base (1), and the runner (5) is located in the middle of the two clamping members (3) on both sides. An external tooth (6) is fixedly connected to the outer wall of the runner (5). A motor (7) is fixedly connected to the outer wall of the bottom end of the base (1), and a second gear (11) is fixedly connected to the output end of the motor (7). The second gear (11) is rotatably arranged in the base (1). The second gear (11) is meshed and connected with the external tooth (6), and its characteristics are as follows: Further included are: A waste chip prevention mechanism (8) for preventing waste chips from splashing deep into the interior of the pipeline. The waste chip prevention mechanism (8) is disposed within the runner (5), and the waste chip prevention mechanism (8) includes an airbag (83); A grinding rod (82) that can both grind the welded joint of the pipeline and clean the waste chips on the airbag (83). The grinding rod (82) is disposed within the waste chip prevention mechanism (8); An air jetting mechanism (9) that can clean the surface of the airbag (83) with the gas discharged from the airbag (83). The air jetting mechanism (9) is disposed within the runner (5); And a steering mechanism (10) that can enable the smooth end of the grinding rod (82) to be used when cleaning the airbag (83). The steering mechanism (10) is disposed within the waste chip prevention mechanism (8).

2. The pipe welding and grinding device for construction engineering according to claim 1, characterized in that: The waste chip prevention mechanism (8) includes connecting columns (81) fixedly connected to the centers of two opposite ends of the runner (5). The airbag (83) is adhered to the connecting columns (81). Grinding rods (82) are provided at both opposite ends of the runner (5). A sliding frame (88) is slidably disposed on the side of the grinding rod (82) close to the runner (5), and a first spring (89) is fixedly connected between one end of the sliding frame (88) and the runner (5). A rotating block (87) is rotatably disposed at the end of the sliding frame (88) close to the grinding rod (82). The grinding rod (82) is rotatably disposed on the rotating block (87). A stop rod (810) is provided above the rotating block (87). One end of the central axis of the rotating block (87) is fixedly connected to a first gear (816), and a toothed rod (817) is meshed and connected above the first gear (816). The toothed rod (817) is fixedly connected within the runner (5). The central axis of the rotating block (87) is rotatably disposed within the rotating block (87) and is also rotatably disposed within the sliding frame (88). A sliding plate (85) is fixedly connected to the end of the sliding frame (88) away from the grinding rod (82). A gas storage sleeve (84) is sleeved outside the sliding plate (85). A first guide groove (86) is opened at the bottom end of the side of the gas storage sleeve (84) away from the grinding rod (82), and the other end of the first guide groove (86) communicates with the inner cavity of the airbag (83). A limiting groove (811) is opened on the inner wall of the gas storage sleeve (84). One end of the sliding plate (85) is movably inserted with a limiting block (812), and a second spring (813) is fixedly connected between one end of the limiting block (812) and the sliding plate (85). One side of the limiting block (812) is movably inserted with a squeezing rod (814), and a third spring (815) is fixedly connected between one end of the squeezing rod (814) and the sliding plate (85).

3. The a building engineering pipeline welding and grinding device according to claim 2, wherein: The jetting mechanism (9) includes a fixed rod (91) fixedly connected to the upper surface of the bottom end of the base (1). A sliding disc (92) is horizontally slidably arranged in the connecting column (81). The sliding disc (92) is fixedly connected to the air storage sleeve (84). One end of the sliding disc (92) away from the air storage sleeve (84) is fixedly connected with a pressing block (97). And a movable plate (94) is arranged on one side of the pressing block (97). The movable plate (94) is slidably arranged in the connecting column (81). A fourth spring (95) is fixedly connected between one end of the movable plate (94) and the connecting column (81). The pressing block (97) is slidably arranged on the movable plate (94). And a fifth spring (98) is fixedly connected between the end of the pressing block (97) away from the sliding disc (92) and the movable plate (94). A second guide groove (93) and a third guide groove (96) are respectively formed in the connecting column (81) and the movable plate (94). And one end of the second guide groove (93) is communicated with the inner cavity of the air bag (83).

4. The pipe welding and grinding device for construction engineering according to claim 2, wherein: The steering mechanism (10) includes a torsion block (101) rotatably arranged in the rotating block (87). And a sixth spring (102) is fixedly connected between one end of the torsion block (101) and the rotating block (87). A fixed block (103) is fixedly connected to the sliding frame (88). One end of the outer wall of the central axis of the rotating block (87) is rotatably provided with a connecting block (104). And one end of the connecting block (104) is fixedly connected with a rotating shaft (105). The rotating shaft (105) is rotatably arranged in the central axis of the rotating block (87). A pull rope (106) is wound around the outer wall of the rotating shaft (105). And one end of the pull rope (106) is fixedly connected with the torsion block (101). The torsion block (101) is fixedly connected with the grinding rod (82). An arc portion (107) is arranged on the grinding rod (82).

5. The a pipeline welding and grinding device for construction engineering according to claim 1, characterized in that: A plurality of the grinding rods (82) are arranged on both sides in an annular and equally spaced manner.

6. The a pipeline welding and grinding device for construction engineering according to claim 2, characterized in that: When the grinding rod (82) is squeezed by the pipe body (4), it is in an inclined state.

7. The a pipeline welding and grinding device for construction engineering according to claim 2, characterized in that: A nut is threadedly connected to the outer wall of the central axis of the rotating block (87), and the nut is located on two opposite sides of the rotating block (87).

8. The a pipeline welding and grinding device for construction engineering according to claim 3, wherein: The third guide groove (96) and the second guide groove (93) are located on the same horizontal plane.

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