Water conservancy project underground pipeline installation centering equipment and use method thereof

Abstract

The invention discloses hydraulic engineering underground pipeline installation centering equipment and a using method thereof. The hydraulic engineering underground pipeline installation centering equipment comprises a box body, and a drawer is arranged in the box body. According to the pipeline welding device, through cooperative use of the clamping mechanism, the telescopic mechanism and the transverse movement mechanism, the device can be suitable for welding of two sets of pipelines with the same length and can also be suitable for welding of pipelines with different lengths, and the practicability and applicability of the device are improved; and after cooling is finished, the output end of an electric telescopic rod extends to drive a clamping block to be clamped in a clamping groove, the rotating speed of the output end of a twisting motor is controlled, and the two welded water conservancy pipelines are slowly rotated, so that the water conservancy pipelines are rapidly cooled, and the situation that workers are scalded in the follow-up pipeline taking-out process is avoided. And whether the welding seam falls off or not is observed, so that the quality of the welding seam is detected conveniently and quickly.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline installation welding, and in particular to a water conservancy project underground pipeline installation centering device and a use method thereof. Background Art

[0002] Water conservancy projects are an important part of modern urban and agricultural industrial production processes. Pipelines are commonly used equipment for transporting water resources in water conservancy projects. In the current pipeline application process, pipelines need to be welded to extend their length.

[0003] Chinese patent CN116441807A discloses a pipeline welding device for water conservancy projects, including a fixing frame, a support block, a first positioning unit, a second positioning unit, a positioning tube and an auxiliary tube. The pipeline to be welded is placed on the support block, and one end of the pipeline is gradually inserted into the positioning tube. The first positioning unit clamps the pipeline. Since the other end of the pipeline is placed on the support block, the pipeline will not bend. At the same time, the sleeve to be welded is inserted into the auxiliary tube. The self-centering chuck clamps the sleeve to be coaxial with the auxiliary tube. The auxiliary tube is then inserted into the positioning tube. The second positioning unit clamps the auxiliary tube. Under the action of the transmission device, if the axis of the pipeline clamped by the first positioning unit changes, the auxiliary tube clamped by the second positioning unit changes synchronously, thereby ensuring that the pipeline and the sleeve can always remain in a coaxial state, thereby ensuring that the weld between the pipeline and the sleeve remains uniform and smooth.

[0004] However, the above device is not provided with a structure for detecting the quality of the pipeline welding seam after welding. The traditional detection method is to fix one end of the pipeline after welding, and the staff use a hammer to hit the pipeline to observe whether it is detached, which is more troublesome and difficult to meet the needs of the staff. Summary of the invention

[0005] In order to solve the above technical problems, a water conservancy project underground pipeline installation centering equipment and a method of using the same are provided. The technical solution solves the problem that the above device proposed in the above background technology is not provided with a structure for detecting the quality of the pipeline welding seam after welding, and the traditional detection method is to fix one end of the pipeline after welding, and the staff uses a hammer to hit the pipeline to observe whether it is detached, which is a rather troublesome problem.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A device for installing and centering underground pipelines in a water conservancy project comprises a box body, a frame is welded to the top end of the box body, telescopic mechanisms are installed on both sides of the left and right sides of the inside of the frame, clamping mechanisms are provided on the ends of two groups of telescopic mechanisms close to each other, and a connecting frame is fixedly installed on the inner rear side of the frame by bolts, the interior of the connecting frame is connected to a support plate by installing a lateral movement mechanism, a rotating cylinder is rotatably connected to the bottom end of the front side of the support plate, a rotating mechanism is also provided on the front side of the support plate, a mounting block is embedded in the interior of the rotating cylinder, and a welding assembly is installed on the mounting block.

[0008] Preferably, the welding assembly includes an air cooler, which is fixedly mounted on the top of the mounting block, an electric push rod is fixedly connected to the bottom of the mounting block, an output end of the electric push rod is fixedly connected to the welding head, and a fixing plate is welded on the left side of the mounting block, a purification box and an air pump are installed on the top of the fixing plate, the input end of the air pump is connected to the suction head through an air pipe, and the output end of the air pump is connected to the purification box through an air pipe.

[0009] Preferably, the telescopic mechanism includes a connecting seat, a first movable plate, a second movable plate and a third movable plate, the connecting seat is welded to the inner wall of the box body, the top and bottom ends of the connecting seat are rotatably connected to the first rotating arm, the other end of the first rotating arm is rotatably connected to the second rotating arm, the other end of the second rotating arm is rotatably connected to the third rotating arm, and the top and bottom ends of the third movable plate are rotatably connected to the fourth rotating arm, the other end of the fourth rotating arm is rotatably connected to the third rotating arm, and the middle parts of the two groups of the second rotating arms are rotatably connected to the top and bottom ends of the first movable plate, respectively, and the middle parts of the two groups of the third rotating arms are rotatably connected to the top and bottom ends of the second movable plate, respectively, and the top end of one group of the first rotating arms is fixedly connected to a driven gear, a servo motor is fixedly installed on the top of the connecting seat, and the output end of the servo motor is fixedly connected to a driving gear meshing with the driven gear, and the outer side of the third movable plate is welded to the movable part through a plurality of groups of first fixed rods.

[0010] Preferably, the front and back sides of the connecting seat are rotatably connected to a fifth rotating arm, the other end of the fifth rotating arm is rotatably connected to a sixth rotating arm, the end of the sixth rotating arm away from the fifth rotating arm is rotatably connected to a seventh rotating arm, the other end of the seventh rotating arm is rotatably connected to the eighth rotating arm, the middle parts of the two groups of the sixth rotating arms are rotatably connected to the front and rear sides of the first movable plate, the middle parts of the two groups of the seventh rotating arms are rotatably connected to the front and rear sides of the second movable plate, and the other ends of the two groups of the eighth rotating arms are rotatably connected to the front and rear sides of the third movable plate.

[0011] Preferably, the clamping mechanism includes a rotating shaft, a threaded rod and a movable plate, the movable parts on both sides are rotatably connected to the inside of the rotating parts, a fixed frame is welded to the outer end of the rotating shaft, the threaded rod is rotatably connected to the inside of the fixed frame, the threads opened at both ends of the threaded rod have opposite rotation directions, the movable plate is provided with two groups and are respectively threadedly connected to the two ends of the outer surface of the threaded rod, a guide rail is also welded to the inside of the fixed frame, the movable plate is slidably connected to the guide rail, and one end of the threaded rod is fixedly connected to the output end of the first stepper motor, the first stepper motor is installed on the outside of the fixed frame, and the two groups of movable plates are provided with clamping grooves on the sides close to each other, and rubber pads are installed on the inner walls of the clamping grooves.

[0012] Preferably, a torsion motor is installed on the outer wall of the movable part on the left, the rotating shaft on the left is fixedly connected to the output end of the torsion motor, an electric telescopic rod is installed on the top of the movable part on the right, a card block is fixedly connected to the output end of the electric telescopic rod, and a card slot matching the card block is opened on the fixed frame on the right.

[0013] Preferably, the lateral movement mechanism includes a first gear and a second gear, the first gear and the second gear are respectively rotatably connected to both sides of the interior of the connecting frame, the first gear is connected to the second gear through a chain, the support plate is fixedly connected to the outer surface of the chain, a second stepper motor is fixedly installed at a position near the right side of the top of the connecting frame, one end of the first gear is fixedly connected to the output end of the second stepper motor, and baffles are welded at left and right symmetrical positions inside the connecting frame, slots are penetrated on the baffles for the chain to pass through, a slide groove is provided on the front side of the connecting frame, a slider matched with the slide groove is fixedly connected to the support plate, and the slider is slidably connected to the inside of the slide groove.

[0014] Preferably, the rotating mechanism includes a driving gear, which is rotatably connected to the front top end of the support plate, a transmission gear is fixedly installed on the outer surface of the rotating cylinder, the driving gear is transmission-connected to the transmission gear through a gear conveyor belt, and a flip motor is installed on the back of the support plate, and the outer middle part of the driving gear is fixedly connected to the output end of the flip motor.

[0015] Preferably, a drawer is provided inside the box, a frame door is hinged on the front side of the frame, an observation window is installed in the middle of the frame door, a push handle and a controller are fixedly installed on the left side of the frame, the controller is located above the push handle, and universal wheels are provided at the four corners of the bottom end of the box.

[0016] A method for using a centering device for installing an underground pipeline in a water conservancy project comprises the following steps:

[0017] S1: The two sets of frame doors are opened automatically, and the two sets of water conservancy pipes to be welded are loaded through the external mechanical arm, and the output ends of the first stepper motors on both sides are rotated, thereby driving the threaded rod to rotate, so that the two sets of moving plates on both sides are close to each other, so as to clamp the two sets of water conservancy pipes to be welded;

[0018] S2: The output ends of the servo motors on both sides rotate, thereby driving the driving gear to rotate, so that the driven gear and the first rotating arm at the top rotate, and then the second rotating arm, the third rotating arm, the fourth rotating arm, the fifth rotating arm, the sixth rotating arm, the seventh rotating arm and the eighth rotating arm all rotate synchronously, so that the third movable plates on both sides approach each other, thereby driving the two groups of water conservancy pipes to be welded to approach each other, so that the connection surfaces are fitted together;

[0019] S3: The welding head is in the middle of the top of the edge of the connection surface. The welding head welds here first. The output end of the electric telescopic rod contracts, driving the card block to disengage from the inside of the card slot. By twisting the output end of the motor, the two sets of water conservancy pipes connected together are driven to rotate. The welding head continues to weld, thereby realizing the welding of the annular part of the edge of the entire connection surface. The smoke generated during welding is sucked into the purification box by the suction head for purification;

[0020] S4. After welding is completed, the output end of the flip motor is used to drive the driving gear to rotate. Driven by the gear conveyor belt, the transmission gear and the rotating cylinder are rotated as a whole, so that the cooling fan is facing downward, the cooling fan is started, and the output end of the twisting motor is rotated again, so that the annular part of the edge of the entire connection surface is cooled by air;

[0021] S5. After the cooling is completed, the output end of the electric telescopic rod is extended, driving the card block to be stuck inside the card slot, so that the fixed frame on the right cannot rotate. The speed of the output end of the twisting motor is controlled to slowly rotate the two sets of water conservancy pipes after welding to observe whether the welding seam will fall off, thereby realizing the quality inspection of the welding seam, which is convenient and quick;

[0022] S6. After the test is completed, the clamp on the welded pipe is released and the pipe falls into the drawer, making it easier for the staff to collect it.

[0023] Compared with the prior art, the present invention provides a water conservancy project underground pipeline installation centering device and a method of using the same, which has the following beneficial effects:

[0024] 1. The present invention is provided with a clamping mechanism, a telescopic mechanism and a lateral movement mechanism for coordinated use. Two groups of clamping mechanisms are used to clamp two groups of water conservancy pipes to be welded respectively. The connecting surfaces of the two groups of water conservancy pipes to be welded are fitted together by the telescopic mechanism. The horizontal position of the welding head is adjusted by the lateral movement mechanism, so that the device is not only applicable to welding two groups of pipes with the same length, but also applicable to welding pipes with different lengths, thereby improving the practicality and applicability of the device.

[0025] 2. The present invention is provided with such a telescopic mechanism, which is multi-stage telescopic. When fully retracted, the volume is small, and the space left inside the frame is small, so that the connection surfaces of pipes of different lengths can be well fitted.

[0026] 3. The present invention is then provided with a purification box, an air pump and an air suction head for coordinated use, so that the smoke particles generated during the welding process enter the purification box for purification. A rotating mechanism is also provided to drive the rotating cylinder to rotate, so that the cold air fan faces downward, and the water conservancy pipeline is quickly cooled to prevent the staff from being scalded in the subsequent process of removing the pipeline.

[0027] 4. After the cooling is completed, the output end of the electric telescopic rod of the present invention extends, driving the card block to be stuck in the card slot, so that the fixed frame on the right side cannot rotate, and the rotation speed of the output end of the twisting motor is controlled to slowly rotate the two groups of water conservancy pipes after welding to observe whether the welding seam will fall off, thereby realizing the quality inspection of the welding seam, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0030] Figure 3 It is a partial structural schematic diagram of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the telescopic mechanism in the present invention;

[0032] Figure 5 For the present invention Figure 3 Schematic diagram of the proposed enlarged structure at A;

[0033] Figure 6 For the present invention Figure 3 Schematic diagram of the proposed enlarged structure at B;

[0034] Figure 7 It is a structural schematic diagram of the lateral motion mechanism in the present invention;

[0035] Figure 8 It is a structural schematic diagram of the rotating mechanism in the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the welding assembly in the present invention.

[0037] The numbers in the figure are:

[0038] 1. Box body; 101. Drawer; 102. Push handle; 103. Frame; 104. Frame door; 105. Observation window; 106. Controller; 107. Universal wheel; 108. Connection frame; 109. Support plate; 110. Rotating cylinder; 111. Mounting block; 112. Fixing plate; 113. Electric push rod; 114. Welding head; 115. Air cooler; 116. Purification box; 117. Air pump; 118. Suction head;

[0039] 2. Telescopic mechanism; 201. Connecting seat; 202. First movable plate; 203. Second movable plate; 204. Third movable plate; 205. First rotating arm; 206. Second rotating arm; 207. Third rotating arm; 208. Fourth rotating arm; 209. Fifth rotating arm; 210. Sixth rotating arm; 211. Seventh rotating arm; 212. Eighth rotating arm; 213. First fixed rod; 214. Movable member; 215. Driven gear; 216. Servo motor; 217. Driving gear; 218. Driving motor;

[0040] 3. Clamping mechanism; 301. Rotating shaft; 302. Fixed frame; 303. Threaded rod; 304. Guide rail; 305. Moving plate; 306. First stepper motor; 307. Twisting motor; 308. Electric telescopic rod; 309. Card block; 310. Card slot;

[0041] 4. lateral motion mechanism; 401. first gear; 402. second gear; 403. chain; 404. second stepping motor; 405. baffle; 406. slideway; 407. slider;

[0042] 5. Rotating mechanism; 501. Driving gear; 502. Transmission gear; 503. Gear conveyor belt; 504. Flipping motor. DETAILED DESCRIPTION

[0043] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0044] Example 1

[0045] Please refer to Figure 1-9As shown, an underground pipeline installation and centering equipment for a water conservancy project includes a box body 1, a frame 103 is welded to the top of the box body 1, telescopic mechanisms 2 are installed on both sides of the left and right sides of the inside of the frame 103, and clamping mechanisms 3 are provided on the ends of the two sets of telescopic mechanisms 2 close to each other, and a connecting frame 108 is fixedly installed on the inner rear side of the frame 103 by bolts, the interior of the connecting frame 108 is connected to a support plate 109 by installing a lateral movement mechanism 4, the front bottom end of the support plate 109 is rotatably connected to a rotating cylinder 110, and a rotating mechanism 5 is also provided on the front side of the support plate 109, and a mounting block 111 is embedded and connected to the inside of the rotating cylinder 110, and a welding assembly is installed on the mounting block 111.

[0046] The welding assembly includes an air cooler 115, which is fixedly mounted on the top of the mounting block 111. An electric push rod 113 is fixedly connected to the bottom of the mounting block 111. The output end of the electric push rod 113 is fixedly connected to the welding head 114. A fixing plate 112 is welded to the left side of the mounting block 111. A purification box 116 and an air pump 117 are installed on the top of the fixing plate 112. The input end of the air pump 117 is connected to the suction head 118 through an air pipe, and the output end of the air pump 117 is connected to the purification box 116 through an air pipe.

[0047] Example 2

[0048] Please refer to Figure 4 As shown, the telescopic mechanism 2 includes a connecting seat 201, a first movable plate 202, a second movable plate 203 and a third movable plate 204. The connecting seat 201 is welded to the inner wall of the box body 1. The top and bottom ends of the connecting seat 201 are rotatably connected to the first rotating arm 205. The other end of the first rotating arm 205 is rotatably connected to the second rotating arm 206. The other end of the second rotating arm 206 is rotatably connected to the third rotating arm 207. The top and bottom ends of the third movable plate 204 are rotatably connected to the fourth rotating arm 208. The other ends of the fourth rotating arm 208 are rotatably connected to the third rotating arm 207. The connecting seat 201 is connected, and the middle parts of the two groups of second rotating arms 206 are respectively rotatably connected to the top and bottom ends of the first movable plate 202, and the middle parts of the two groups of third rotating arms 207 are respectively rotatably connected to the top and bottom ends of the second movable plate 203, and the top of one group of first rotating arms 205 is fixedly connected to a driven gear 215, a servo motor 216 is fixedly installed on the top of the connecting seat 201, and the output end of the servo motor 216 is fixedly connected to a driving gear 217 meshing with the driven gear 215, and the outer side of the third movable plate 204 is welded to the movable part 214 through a plurality of groups of first fixed rods 213.

[0049] Please refer to Figure 4As shown, the front and back sides of the connecting seat 201 are rotatably connected to the fifth rotating arm 209, the other end of the fifth rotating arm 209 is rotatably connected to the sixth rotating arm 210, the end of the sixth rotating arm 210 away from the fifth rotating arm 209 is rotatably connected to the seventh rotating arm 211, the other end of the seventh rotating arm 211 is rotatably connected to the eighth rotating arm 212, the middle parts of the two groups of sixth rotating arms 210 are rotatably connected to the front and rear sides of the first movable plate 202, the middle parts of the two groups of seventh rotating arms 211 are rotatably connected to the front and rear sides of the second movable plate 203, and the other ends of the two groups of eighth rotating arms 212 are rotatably connected to the front and rear sides of the third movable plate 204.

[0050] In this scheme, the principle of the telescopic mechanism 2 is as follows: the output end of the servo motor 216 drives the driving gear 217 to rotate, so that the driven gear 215 and the first rotating arm 205 at the top rotate, and then the second rotating arm 206, the third rotating arm 207, the fourth rotating arm 208, the fifth rotating arm 209, the sixth rotating arm 210, the seventh rotating arm 211 and the eighth rotating arm 212 all rotate synchronously, so that the first movable plate 202, the second movable plate 203 and the third movable plate 204 can move left and right, thereby realizing the change of the spacing between the clamping mechanisms 3 on both sides.

[0051] Example 3

[0052] Please refer to Figure 5 As shown, the clamping mechanism 3 includes a rotating shaft 301, a threaded rod 303 and a movable plate 305. The movable parts 214 on both sides are rotatably connected to the rotating shaft 301. The outer end of the rotating shaft 301 is welded to a fixed frame 302. The threaded rod 303 is rotatably connected to the inside of the fixed frame 302. The threads opened at both ends of the threaded rod 303 have opposite rotation directions. The movable plate 305 is provided with two groups and is respectively threadedly connected to the two ends of the outer surface of the threaded rod 303. A guide rail 304 is also welded to the inside of the fixed frame 302. The movable plate 305 is slidably connected to the guide rail 304, and one end of the threaded rod 303 is fixedly connected to the output end of the first stepper motor 306. The first stepper motor 306 is installed on the outer side of the fixed frame 302. A clamping groove is opened on the side where the two groups of movable plates 305 are close to each other, and a rubber pad is installed on the inner wall of the clamping groove.

[0053] In this solution, the principle of the clamping mechanism 3 is as follows: the threaded rod 303 is driven to rotate by the output end of the first stepper motor 308, so that the two groups of movable plates 305 are close to each other, and the two groups of clamping grooves clamp the pipes. Since the two groups of clamping mechanisms 3 are symmetrically arranged, the two groups of clamping mechanisms 3 can respectively clamp the two groups of pipes to be welded, and the centers of the two groups of pipes to be welded are located on the same horizontal line, achieving center alignment.

[0054] Example 4

[0055] Please refer to Figure 5 and Figure 6 As shown, a torsion motor 307 is installed on the outer wall of the left movable part 214, and the left rotating shaft 301 is fixedly connected to the output end of the torsion motor 307. An electric telescopic rod 308 is installed on the top of the right movable part 214, and a clamping block 309 is fixedly connected to the output end of the electric telescopic rod 308, and a clamping slot 310 adapted to the clamping block 309 is opened on the right fixed frame 302.

[0056] In this solution, by controlling the output end of the electric telescopic rod 308 to extend, the card block 309 is driven to be stuck in the card slot 310, thereby preventing the right fixed frame 302 from deflecting under its own gravity, so that the right fixed frame 302 can also maintain a horizontal state.

[0057] Example 5

[0058] Please refer to Figure 7 As shown, the lateral movement mechanism 4 includes a first gear 401 and a second gear 402, and the first gear 401 and the second gear 402 are rotatably connected to the inner sides of the connection frame 108 respectively. The first gear 401 is transmission-connected to the second gear 402 through a chain 403, and the support plate 109 is fixedly connected to the outer surface of the chain 403. A second stepper motor 404 is fixedly installed at a position near the right side of the top of the connection frame 108, one end of the first gear 401 is fixedly connected to the output end of the second stepper motor 404, and baffles 405 are welded at left-right symmetrical positions inside the connection frame 108, and a notch for the chain 403 to pass through is opened on the baffle 405, and a slide groove 406 is opened on the front side of the connection frame 108, and a slider 407 adapted to the slide groove 406 is fixedly connected to the support plate 109, and the slider 407 is slidably connected to the inside of the slide groove 406.

[0059] In this solution, the principle of the lateral motion mechanism 4 is as follows: the output end of the second stepper motor 404 drives the first gear 401 to rotate, so that the chain 403 is driven, and then the support plate 109 can reciprocate in the horizontal direction; because in real life, the welding of water conservancy pipelines is not only for two pipelines of the same length, but also includes the welding of short pipelines and long pipelines. Through this setting, the position of the welding head 114 in the horizontal direction is changed, thereby improving the practicality and applicability of the device. And by providing two sets of baffles 405, the support plate 109 can always move between the two sets of baffles 405, and the slide groove 406 and the slider 407 are provided for coordinated use, thereby improving the stability of the movement of the support plate 109.

[0060] Example 6

[0061] Please refer to Figure 8As shown, the rotating mechanism 5 includes a driving gear 501, which is rotatably connected to the front top of the support plate 109, and a transmission gear 502 is fixedly installed on the outer surface of the rotating cylinder 110. The driving gear 501 is transmission-connected to the transmission gear 502 through a gear conveyor belt 503, and a flip motor 504 is installed on the back of the support plate 109, and the outer middle part of the driving gear 501 is fixedly connected to the output end of the flip motor 504.

[0062] In this solution, the principle of the rotating mechanism 5 is as follows: the output end of the flip motor 504 drives the driving gear 501 to rotate, and under the drive of the gear conveyor belt 503, the transmission gear 502 and the rotating cylinder 110 rotate as a whole, so that the air cooler 115 is facing downward to quickly cool the water pipe.

[0063] Example 7

[0064] Please refer to Figure 1 As shown, a drawer 101 is provided inside the box 1, a frame door 104 is hinged on the front side of the frame 103, an observation window 105 is installed in the middle of the frame door 104, a push handle 102 and a controller 106 are fixedly installed on the left side of the frame 103, the controller 106 is located above the push handle 102, and universal wheels 107 are provided at the four corners of the bottom end of the box 1.

[0065] In this solution, the frame door 104 is an automatic door that can be opened and closed automatically. The arrangement of the universal wheels 107 and the push handle 102 makes it easy for the user to move the device.

[0066] A method for using a centering device for installing an underground pipeline in a water conservancy project comprises the following steps:

[0067] S1: The two sets of frame doors 104 are automatically opened, and the two sets of water conservancy pipes to be welded are loaded through the external mechanical arm, and the output ends of the first stepper motors 308 on both sides are rotated, thereby driving the threaded rod 303 to rotate, so that the two sets of moving plates 305 on both sides are close to each other, so as to clamp the two sets of water conservancy pipes to be welded;

[0068] S2: The output ends of the servo motors 216 on both sides rotate, thereby driving the driving gear 217 to rotate, so that the driven gear 215 and the first rotating arm 205 at the top rotate, and then the second rotating arm 206, the third rotating arm 207, the fourth rotating arm 208, the fifth rotating arm 209, the sixth rotating arm 210, the seventh rotating arm 211 and the eighth rotating arm 212 rotate synchronously, so that the third movable plates 204 on both sides approach each other, thereby driving the two groups of water conservancy pipes to be welded to approach each other, so that the connection surfaces are fitted together;

[0069] S3: The welding head 114 is located at the middle of the top of the edge of the connection surface. The welding head 114 welds this part first. The output end of the electric telescopic rod 308 contracts, driving the clamping block 309 to disengage from the inside of the clamping slot 310. The output end of the twisting motor 307 rotates, thereby driving the two groups of water conservancy pipes connected together to rotate. The welding head 114 continues to weld, thereby realizing the welding of the annular part of the edge of the entire connection surface. The smoke generated during welding is sucked into the purification box 116 by the suction head 118 for purification;

[0070] S4, after welding is completed, the output end of the flip motor 504 is used to drive the driving gear 501 to rotate, and the transmission gear 502 and the rotating cylinder 110 are rotated as a whole under the drive of the gear conveyor belt 503, so that the cooling fan 115 is facing downward, the cooling fan 115 is started, and the output end of the twisting motor 307 is rotated again, so that the annular part of the edge of the entire connection surface is cooled by air;

[0071] S5. After the cooling is completed, the output end of the electric telescopic rod 308 is extended, driving the card block 309 to be stuck in the card slot 310, so that the fixed frame 302 on the right side cannot rotate, and the speed of the output end of the twisting motor 307 is controlled to slowly rotate the two groups of water conservancy pipes after welding to observe whether the welding seam will fall off, thereby realizing the quality inspection of the welding seam, which is convenient and quick;

[0072] S6. After the inspection is completed, the clamping of the welded pipe is released, and the pipe falls into the drawer 101, which is convenient for the staff to collect.

[0073] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for centering underground pipelines in water conservancy projects, characterized in that: The invention comprises a box body (1), the top end of which is welded with a frame (103), telescopic mechanisms (2) are installed on both left and right sides of the frame (103), the ends of two sets of telescopic mechanisms (2) close to each other are provided with clamping mechanisms (3), and a connecting frame (108) is fixedly installed on the rear side of the frame (103) by bolts, the interior of the connecting frame (108) is connected to a support plate (109) by installing a lateral movement mechanism (4), the front bottom end of the support plate (109) is rotatably connected with a rotating cylinder (110), the front side of the support plate (109) is also provided with a rotating mechanism (5), the interior of the rotating cylinder (110) is embedded with a mounting block (111), and a welding assembly is installed on the mounting block (111).

2. The underground pipeline installation and centering equipment for water conservancy projects according to claim 1 is characterized in that: The welding assembly comprises an air cooler (115), wherein the air cooler (115) is fixedly mounted on the top of a mounting block (111), an electric push rod (113) is fixedly connected to the bottom of the mounting block (111), an output end of the electric push rod (113) is fixedly connected to a welding head (114), and a fixing plate (112) is welded to the left side of the mounting block (111), a purification box (116) and an air pump (117) are mounted on the top of the fixing plate (112), an input end of the air pump (117) is connected to an air suction head (118) via an air pipe, and an output end of the air pump (117) is connected to the purification box (116) via an air pipe.

3. The underground pipeline installation and centering equipment for water conservancy projects according to claim 1 is characterized in that: The telescopic mechanism (2) comprises a connecting seat (201), a first movable plate (202), a second movable plate (203) and a third movable plate (204); the connecting seat (201) is welded to the inner wall of the box body (1); the top and bottom ends of the connecting seat (201) are both rotatably connected to a first rotating arm (205); the other end of the first rotating arm (205) is rotatably connected to a second rotating arm (206); the other end of the second rotating arm (206) is rotatably connected to a third rotating arm (207); and the top and bottom ends of the third movable plate (204) are both rotatably connected to a fourth rotating arm (208); the other ends of the fourth rotating arm (208) are respectively rotatably connected to the third rotating arm (207). The connecting seat (201) is rotatably connected, and the middle parts of the two groups of the second rotating arms (206) are respectively rotatably connected to the top and bottom ends of the first movable plate (202), and the middle parts of the two groups of the third rotating arms (207) are respectively rotatably connected to the top and bottom ends of the second movable plate (203), and the top end of one group of the first rotating arms (205) is fixedly connected to a driven gear (215), a servo motor (216) is fixedly installed on the top of the connecting seat (201), and the output end of the servo motor (216) is fixedly connected to a driving gear (217) meshing with the driven gear (215), and the outer side of the third movable plate (204) is welded to the movable part (214) through a plurality of groups of first fixed rods (213).

4. The underground pipeline installation and centering equipment for water conservancy projects according to claim 2 is characterized in that: The front side and the back side of the connecting seat (201) are both rotatably connected to a fifth rotating arm (209); the other end of the fifth rotating arm (209) is rotatably connected to a sixth rotating arm (210); one end of the sixth rotating arm (210) away from the fifth rotating arm (209) is rotatably connected to a seventh rotating arm (211); the other end of the seventh rotating arm (211) is rotatably connected to an eighth rotating arm (212); the middle parts of the two groups of the sixth rotating arms (210) are rotatably connected to the front and rear sides of the first movable plate (202), the middle parts of the two groups of the seventh rotating arms (211) are rotatably connected to the front and rear sides of the second movable plate (203), and the other ends of the two groups of the eighth rotating arms (212) are rotatably connected to the front and rear sides of the third movable plate (204).

5. The underground pipeline installation and centering equipment for water conservancy projects according to claim 3 is characterized in that: The clamping mechanism (3) comprises a rotating shaft (301), a threaded rod (303) and a movable plate (305); the movable parts (214) on both sides are rotatably connected to the rotating shaft (301); a fixed frame (302) is welded to the outer end of the rotating shaft (301); the threaded rod (303) is rotatably connected to the inside of the fixed frame (302); the threads at both ends of the threaded rod (303) are in opposite directions; the movable plate (305) is provided with two groups of threads respectively threadedly connected to the threaded rod (303); Guide rails (304) are welded to the interior of the fixed frame (302) at both ends of the outer surface of the rod (303), the movable plate (305) is slidably connected to the guide rails (304), and one end of the threaded rod (303) is fixedly connected to the output end of the first stepper motor (306), and the first stepper motor (306) is installed on the outside of the fixed frame (302). A clamping groove is provided on the side where the two groups of movable plates (305) are close to each other, and a rubber pad is installed on the inner wall of the clamping groove.

6. The underground pipeline installation and centering equipment for water conservancy projects according to claim 4, characterized in that: A twisting motor (307) is installed on the outer wall of the movable part (214) on the left side, and the rotating shaft (301) on the left side is fixedly connected to the output end of the twisting motor (307). An electric telescopic rod (308) is installed on the top of the movable part (214) on the right side, and a clamping block (309) is fixedly connected to the output end of the electric telescopic rod (308), and a clamping slot (310) adapted to the clamping block (309) is opened on the fixed frame (302) on the right side.

7. The underground pipeline installation and centering equipment for water conservancy projects according to claim 1 is characterized in that: The lateral motion mechanism (4) comprises a first gear (401) and a second gear (402), the first gear (401) and the second gear (402) being rotatably connected to two sides of the interior of the connection frame (108), the first gear (401) being transmission-connected to the second gear (402) via a chain (403), the support plate (109) being fixedly connected to the outer surface of the chain (403), a second stepping motor (404) being fixedly installed at a position near the right side of the top of the connection frame (108), the first One end of the gear (401) is fixedly connected to the output end of the second stepper motor (404), and baffles (405) are welded at left and right symmetrical positions inside the connection frame (108), and a slot for the chain (403) to pass through is opened on the baffle (405), and a slide groove (406) is opened on the front side of the connection frame (108), and a slider (407) adapted to the slide groove (406) is fixedly connected to the support plate (109), and the slider (407) is slidably connected to the inside of the slide groove (406).

8. The underground pipeline installation and centering equipment for water conservancy projects according to claim 1 is characterized in that: The rotating mechanism (5) comprises a driving gear (501), the driving gear (501) being rotatably connected to the front top end of the support plate (109), a transmission gear (502) being fixedly mounted on the outer surface of the rotating cylinder (110), the driving gear (501) being transmission-connected to the transmission gear (502) via a gear conveyor belt (503), and a flip motor (504) being mounted on the back of the support plate (109), and the outer middle portion of the driving gear (501) being fixedly connected to the output end of the flip motor (504).

9. The underground pipeline installation and centering equipment for water conservancy projects according to claim 1, characterized in that: A drawer (101) is arranged inside the box (1), a frame door (104) is hingedly connected to the front side of the frame (103), an observation window (105) is installed in the middle of the frame door (104), a push handle (102) and a controller (106) are fixedly installed on the left side of the frame (103), the controller (106) is located above the push handle (102), and universal wheels (107) are arranged at the four corners of the bottom end of the box (1).

10. A method for using a centering device for underground pipeline installation in a water conservancy project, characterized in that: The method of installing and centering an underground pipeline of a water conservancy project according to any one of claims 1 to 9 comprises the following steps: S1: The two sets of frame doors (104) are automatically opened, and the two sets of water conservancy pipes to be welded are loaded through the external mechanical arm, and the output ends of the first stepper motors (308) on both sides are rotated, thereby driving the threaded rod (303) to rotate, so that the two sets of movable plates (305) on both sides are close to each other, so as to clamp the two sets of water conservancy pipes to be welded; S2: The output ends of the servo motors (216) on both sides rotate, thereby driving the driving gear (217) to rotate, so that the driven gear (215) and the first rotating arm (205) at the top rotate, and then the second rotating arm (206), the third rotating arm (207), the fourth rotating arm (208), the fifth rotating arm (209), the sixth rotating arm (210), the seventh rotating arm (211) and the eighth rotating arm (212) all rotate synchronously, so that the third movable plates (204) on both sides approach each other, thereby driving the two groups of water conservancy pipelines to be welded to approach each other, so that the connection surfaces are fitted together; S3: The welding head (114) is located at the middle of the top of the edge of the connection surface. The welding head (114) first welds this part. The output end of the electric telescopic rod (308) contracts, driving the clamping block (309) to disengage from the inside of the clamping slot (310). The output end of the twisting motor (307) rotates, thereby driving the two groups of water conservancy pipes connected together to rotate. The welding head (114) continues to weld, thereby achieving welding of the annular part of the edge of the entire connection surface, and the smoke generated during welding is sucked into the purification box (116) by the suction head (118) for purification; S4, after the welding is completed, the output end of the flip motor (504) is used to drive the driving gear (501) to rotate, and the transmission gear (502) and the rotating cylinder (110) are driven by the gear conveyor belt (503) to rotate as a whole, so that the cooling fan (115) is turned downward, the cooling fan (115) is started, and the output end of the twisting motor (307) is rotated again, so that the annular part of the edge of the entire connection surface is cooled by air; S5, after the cooling is completed, the output end of the electric telescopic rod (308) is extended, driving the clamping block (309) to be clamped in the clamping slot (310), so that the fixing frame (302) on the right side cannot rotate, and the rotation speed of the output end of the twisting motor (307) is controlled to slowly rotate the two groups of water conservancy pipelines after welding to observe whether the welding seam will fall off, thereby realizing the quality inspection of the welding seam, which is convenient and quick; S6. After the test is completed, the clamping of the welded pipe is released, and the pipe falls into the drawer (101), which is convenient for the staff to collect.

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