PVC pipe connecting device

Abstract

The invention discloses a PVC (polyvinyl chloride) pipe connecting device, relates to the technical field of pipe connecting equipment, and aims to provide the PVC pipe connecting device which can be mounted on an excavator and can automatically complete pipe butt joint. The PVC pipe connecting device is technically characterized by comprising a framework, a connecting part connected with an excavator arm support is arranged on the framework, a sliding rail is arranged on the framework, and the sliding rail is provided with a sliding block; a sliding rail is arranged on the framework, a first horizontal moving part is arranged on the sliding rail, hinge seats are arranged below the framework and the first horizontal moving part, and clamping parts are arranged on the side faces of the hinge seats. The pipes are clamped, then the pipes are lifted through an excavator to leave the ground, then the first horizontal moving component drives the clamping component connected with the first horizontal moving component to horizontally move through the hinge base, the two pipes horizontally move, and the purpose of automatically splicing and connecting the pipes is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe connection equipment, and specifically relates to a PVC pipe connection device. Background Technique

[0002] The full name of PVC pipe is polyvinyl chloride pipe, which has good tensile and compressive strength, can withstand a certain amount of pressure and tension, and the inner wall of the pipe is smooth, with little resistance when the fluid flows through the pipe. It has excellent acid resistance, alkali resistance, and corrosion resistance, is not affected by moist water and soil pH, and can maintain stable performance in various harsh chemical environments. No anti-corrosion treatment is required during pipeline laying, and it is widely used in scenarios such as water supply pipes, drainage pipes, wire pipes, and cable protection pipes, and occupies a large share in the construction field, municipal engineering field, agricultural irrigation field, and some industrial transportation fields.

[0003] Among them, the PVC pipes used in some municipal engineering and agricultural irrigation projects are relatively large in size. When connecting, it is necessary to manually push the two pipes to be butted. Since the pipes are large in size and their own weight is also large, this method has low efficiency on the one hand, and on the other hand, the labor intensity of manual work is large, which further makes the pipe connection time too long, resulting in low overall project efficiency. Summary of the Invention

[0004] (I) Technical Problems to be Solved In view of the deficiencies of the prior art, the present invention provides a PVC pipe connection device that can be installed on an excavator and automatically complete the pipe connection.

[0005] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solution: A PVC pipe connection device, including a framework, a connection component for connecting with the excavator boom is provided on the framework, a slide rail is provided on the framework, a first horizontal moving component is provided on the slide rail, hinge seats are provided under both the framework and the first horizontal moving component, a clamping component is provided on the side of the hinge seat, and a self-tightening clamping block that fits the pipe is provided on the end face of the clamping component; The clamping component includes a first clamping arm and a second clamping arm rotatably connected to the hinge seat. A third hydraulic cylinder is hinged on the sides of the first clamping arm and the second clamping arm. Clamping plates connected to the self-tightening clamping block are provided at the bottoms of both the first clamping arm and the second clamping arm, and a fixed pin shaft for connecting with the self-tightening clamping block is provided on the clamping plate; The self-tightening clamping block includes a wedge block horizontally slidably connected to the clamping plate. The side of the wedge block is set as an arc surface that fits the outer wall of the pipe, and anti-slip stripes are provided inside the arc surface. A sliding pin shaft is provided on the wedge block, a return spring is provided on the sliding pin shaft, and the other end of the return spring is connected to the fixed pin shaft.

[0006] Preferably, the connecting component includes a connecting frame provided on the skeleton. A connecting plate is rotatably provided on the connecting frame. A first rotary oil cylinder drivingly connected to the connecting frame is provided on the connecting plate. A connecting pin shaft connected to the forearm of the excavator is provided on one side of the connecting plate.

[0007] Preferably, the first horizontal moving component includes a first sliding frame. A first sliding seat slidably matched with the slide rail is provided under the first sliding frame. A first front hinge plate is provided on the side surface of the first sliding frame. A first hydraulic cylinder is provided in the first front hinge plate. A first rear hinge plate connected to the skeleton is provided at the tail end of the first hydraulic cylinder.

[0008] Preferably, a second horizontal moving component is provided on the slide rail. A third horizontal moving component is provided under the second horizontal moving component. A grinding component for processing the inner and outer surfaces of the pipe is provided on the side surface of the third horizontal moving component; The grinding component includes a speed increaser connected to the third horizontal movement. A second rotary oil cylinder is provided at the input end of the speed increaser. An output shaft penetrating both sides is provided at the output end of the speed increaser. Outer wall grinding assemblies and inner wall grinding assemblies are provided at both ends of the output shaft.

[0009] Preferably, the second horizontal moving component includes a second sliding frame. A second sliding seat slidably matched with the slide rail is provided under the second sliding frame. A second front hinge plate is provided on the side surface of the second sliding frame. A second hydraulic cylinder is provided in the second front hinge plate. A second rear hinge plate connected to the skeleton is provided at the tail end of the second hydraulic cylinder.

[0010] Preferably, the third horizontal moving component includes a suspension frame connected to the speed increaser. Rollers hung on both sides of the second sliding frame are provided on the suspension frame. A fourth hydraulic cylinder is provided on the side surface of the suspension frame. A support plate connected to the second sliding frame is provided at the tail end of the fourth hydraulic cylinder.

[0011] Preferably, the outer wall grinding assembly includes a first rotating disk connected to the output shaft. Outer wall grinding blocks and outer wall wiping cotton fitting to the outer wall of the pipe are embedded in the first rotating disk. Chamfer cutters corresponding to the outer side edge positions of the pipe are provided in the first rotating disk.

[0012] Preferably, the inner wall grinding assembly includes a second rotating disk connected to the output shaft. Inner wall grinding blocks and inner wall wiping cotton fitting to the inner wall of the pipe are embedded in the second rotating disk.

[0013] Preferably, a gluing component is provided in the inner wall grinding assembly, and the gluing component includes a fixed plate connected to the inner wall of the second rotating disk and a battery, the fixed plate is provided with an electromagnetic telescopic rod electrically connected to the battery, the electromagnetic telescopic rod is provided with a fixing frame, and the side of the fixing frame is provided with a gluing wheel group that fits with the inner wall of the pipe.

[0014] Preferably, the glue coating wheel group includes a glue storage hopper connected to a fixed frame, a rotating glue roller is rotatably provided on the glue storage hopper, and a threaded fixing groove connected to a glue tank is provided under the glue storage hopper.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a PVC pipe connection device, which has the following beneficial effects: 1. By setting a first horizontal moving component and a clamping component, when in use, the excavator uses the connecting component to lift the skeleton and places the clamping components on both sides of the pipe. The two clamping components are distributed on the sides of the pipes on both sides that need to be docked. Then the third hydraulic cylinder works to drive the first clamping arm and the second clamping arm inward, so that the first clamping arm and the second clamping arm drive the self-tightening clamping block to fit the outer wall of the pipe through the clamping plate and clamp the pipe. Then the excavator is used to lift the pipe off the ground. Then the first horizontal moving component uses the articulated seat to drive the clamping component connected thereto to move horizontally, so that the two clamping components are close to each other, and the pipes clamped by them are also moved horizontally accordingly, so as to achieve the purpose of automatically splicing and docking the pipes without manual operation and intervention, which greatly improves work efficiency.

[0016] 2. By setting a self-tightening clamping block, the self-tightening clamping block mainly consists of a wedge block that slides with the clamping plate. When the clamping component is pulled inward toward the center, the wedge block is in contact with the outer wall of the pipe and cannot move by itself. The clamping plate will use movement to apply force to the wedge block. At this time, after the wedge block is subjected to force, it will use its own inclined surface to move inward, thereby squeezing the pipe and making it fit more closely with the pipe. The reset spring can use its own elastic force to drive the wedge block to reset after completing the clamping work.

[0017] 3. By setting up the grinding parts, the grinding parts are arranged under the second horizontal moving part and the third horizontal moving part, which can perform horizontal movement in the X-axis and Y-axis directions. It is mainly driven by the second rotary cylinder and the speed increaser, and can be connected to the original hydraulic system of the excavator. There are outer wall grinding and tightening and inner wall grinding components for the pipe on both sides. The inner and outer walls of the butt-jointed pipes can be ground to remove the oxide layer and dirt of the pipes, increase the tightness of the pipes after connection, and the pipes are automatically completed without human participation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Schematic three-dimensional view of the present invention; Figure 2 Schematic three-dimensional view of the connecting component of the present invention; Figure 3 Schematic view of the connection mode between the first horizontal moving component and the clamping component of the present invention; Figure 4 Schematic view of the connection mode between the self-tightening clamping block and the clamping plate of the present invention; Figure 5 Schematic view of the connection mode between the second horizontal moving component and the third horizontal moving component of the present invention; Figure 6 Schematic three-dimensional view of the second horizontal moving component of the present invention; Figure 7 Schematic view of the connection mode between the third horizontal moving component and the grinding component of the present invention; Figure 8 Schematic three-dimensional view of the outer wall grinding assembly of the present invention; Figure 9 Schematic three-dimensional view of the inner wall grinding assembly of the present invention; Figure 10 Schematic three-dimensional view of the gluing component of the present invention; Figure 11 Schematic sectional view of the gluing wheel set of the present invention.

[0019] In the figure: 1. Skeleton; 2. Connecting component; 201. Connecting frame; 202. Connecting plate; 203. First rotary oil cylinder; 204. Connecting pin shaft; 3. First horizontal moving component; 301. First sliding frame; 302. First sliding seat; 303. First front hinge plate; 304. First hydraulic cylinder; 305. First rear hinge plate; 4. Second horizontal moving component; 401. Second sliding frame; 402. Second sliding seat; 403. Second front hinge plate; 404. Second hydraulic cylinder; 405. Second rear hinge plate; 5. Clamping component; 501. First clamping arm; 502. Third hydraulic cylinder; 503. Second clamping arm; 504. Clamping plate; 505. Fixed pin shaft; 6. Self-tightening clamping block; 601. Wedge block; 602. Anti-slip stripes; 603. Sliding pin shaft; 604. Return spring; 7. Grinding component; 701. Speed increaser; 702. Second rotary oil cylinder; 703. Outer wall grinding assembly; 7031. First rotary disc; 7032. Outer wall grinding block; 7033. Outer wall wiping cotton; 7034. Chamfer cutter; 704. Inner wall grinding assembly; 7041. Second rotary disc; 7042. Inner wall grinding block; 7043. Inner wall wiping cotton; 705. Output shaft; 8. Slide rail; 9. Third horizontal moving component; 901. Suspension bracket; 902. Roller; 903. Fourth hydraulic cylinder; 904. Support plate; 10. Hinge seat; 11. Glue - applying component; 1101. Fixed plate; 1102. Electromagnetic telescopic rod; 1103. Fixed frame; 1104. Glue - applying wheel set; 11041. Glue storage hopper; 11042. Rotating rubber roller; 1143. Threaded fixing groove; 1105. Storage battery. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-11 , a PVC pipe connection device, including a framework 1, a connection component 2 connected to the excavator boom is provided on the framework 1, a slide rail 8 is provided on the framework 1, a first horizontal moving component 3 is provided on the slide rail 8, hinge seats 10 are provided under both the framework 1 and the first horizontal moving component 3, a clamping component 5 is provided on the side of the hinge seat 10, a self - tightening clamping block 6 that fits the pipe is provided on the end face of the clamping component 5, the clamping component 5 includes a first clamping arm 501 and a second clamping arm 503 rotatably connected to the hinge seat 10, a third hydraulic cylinder 502 is hinged to the sides of the first clamping arm 501 and the second clamping arm 503, clamping plates 504 connected to the self - tightening clamping block 6 are provided at the bottoms of the first clamping arm 501 and the second clamping arm 503, and a fixed pin shaft 505 connecting the clamping plate 504 to the self - tightening clamping block 6 is provided on the clamping plate 504; Such as Figure 3As shown, by setting the first horizontal moving component 3 and the clamping component 5, when in use, the excavator uses the connecting component 2 to lift the skeleton 1, and places the clamping component 5 on both sides of the pipe. The two clamping components 5 are distributed on the sides of the pipes on both sides that need to be docked, and then the third hydraulic cylinder 502 works to drive the first clamping arm 501 and the second clamping arm 503 inward, so that the first clamping arm 501 and the second clamping arm 503 drive the self-tightening clamping block 6 to fit the outer wall of the pipe through the clamping plate 504, and clamp the pipe. Then, the excavator is used to lift the pipe to make it leave the ground, and then the first horizontal moving component 3 uses the articulated seat 10 to drive the clamping component 5 connected thereto to move horizontally, so that the two clamping components 5 are close to each other, and the pipes clamped by them are also moved horizontally accordingly, so as to achieve the purpose of automatically splicing and docking the pipes, without manual operation and intervention, and greatly improve the work efficiency; In addition, when placing pipes, two sets of clamping components 5 can be used to clamp the same pipe, and then an excavator can be used to place it into a pre-excavated pipe groove, and then another pipe can be placed in the same way. This can also be used for the pre-placement of pipes, further reducing the labor intensity of manual labor. In addition, this method eliminates the need for manual labor to enter the pipe groove, reducing the risk of manual work.

[0022] The self-tensioning clamping block 6 comprises a wedge block 601 horizontally slidably connected to the clamping plate 504, the side of the wedge block 601 is arranged as an arc surface that fits the outer wall of the pipe, and the arc surface is provided with anti-slip stripes 602, the wedge block 601 is provided with a sliding pin 603, the sliding pin 603 is provided with a return spring 604, and the other end of the return spring 604 is connected to the fixed pin 505; like Figure 4 As shown, by setting a self-tightening clamping block 6, the self-tightening clamping block 6 mainly consists of a wedge block 601 that slides with the clamping plate 504. When the clamping component 5 is pulled inward toward the center, the wedge block 601 is in contact with the outer wall of the pipe and cannot move by itself, and the clamping plate 504 will use the movement to apply force to the wedge block 601. At this time, after the wedge block 601 is subjected to force, it will use its own inclined surface to move inward, thereby squeezing the pipe and making it fit more closely with the pipe. After completing the clamping work, the reset spring 604 can use its own elastic force to drive the wedge block 601 to reset, and the clamping force is proportional to the force when the pipe is docked.

[0023] The connecting component 2 includes a connecting frame 201 arranged on the frame 1, a connecting plate 202 is rotatably arranged on the connecting frame 201, a first rotating oil cylinder 203 is provided on the connecting plate 202 and is transmission-connected to the connecting frame 201, and a connecting pin 204 connected to the excavator arm is provided on one side of the connecting plate 202; like Figure 2As shown in the figure, by setting the first rotary oil cylinder 203 and the connecting pin shaft 204, there are two connecting pin shafts 204, and their dimensions and specifications follow the requirements of the industry's excavators. In addition, it can further be connected to an excavator equipped with a quick coupler, so that the excavator only needs to connect the equipment when pipe connection is required. The first rotary oil cylinder 203 can use the original hydraulic system of the excavator for rotary drive, enabling it to adjust the direction of the framework 1, making it more convenient to use.

[0024] The first horizontal moving component 3 includes a first sliding frame 301. A first sliding seat 302 that is slidably matched with the slide rail 8 is provided below the first sliding frame 301. A first front hinge plate 303 is provided on the side of the first sliding frame 301. A first hydraulic cylinder 304 is provided inside the first front hinge plate 303. A first rear hinge plate 305 connected to the framework 1 is provided at the tail end of the first hydraulic cylinder 304. As Figure 3 shown in the figure, by setting the first sliding frame 301, the first sliding frame 301 is arranged on the slide rail 8 through the first sliding seat 302, enabling it to move horizontally under the drive of the first hydraulic cylinder 304, and then using the clamping component 5 to achieve the purpose of driving pipe connection. In addition, by arranging the first sliding frame 301 in the upper part, the first sliding seat 302 is in a compression state, making the movement more stable, and the bearing capacity can be improved without changing the specifications of the first sliding seat 302.

[0025] A second horizontal moving component 4 is provided on the slide rail 8. A third horizontal moving component 9 is provided below the second horizontal moving component 4. A grinding component 7 for processing the inner and outer surfaces of the pipe is provided on the side of the third horizontal moving component 9. The grinding component 7 includes a speed increaser 701 connected to the third horizontal movement. A second rotary oil cylinder 702 is provided at the input end of the speed increaser 701. An output shaft 705 penetrating both sides is provided at the output end of the speed increaser 701. Outer wall grinding assemblies 703 and inner wall grinding assemblies 704 are provided at both ends of the output shaft 705. As Figure 5 shown in the figure, by setting the grinding component 7, the grinding component 7 is arranged below the second horizontal moving component 4 and the third horizontal moving component 9, and can perform horizontal movement in the X-axis and Y-axis directions. It is mainly driven by the second rotary oil cylinder 702 and speeded up by the speed increaser 701. It can be connected to the original hydraulic system of the excavator, and outer wall grinding assemblies 703 and inner wall grinding assemblies 704 for the pipe are provided on both sides, which can grind the inner and outer walls of the pipe to be connected, achieving the purpose of removing the oxide layer and dirt on the pipe, increasing the tightness after pipe connection, and automatically completing the work without manual participation.

[0026] The second horizontal moving member 4 includes a second sliding frame 401. A second sliding seat 402 that slidably cooperates with the slide rail 8 is provided under the second sliding frame 401. A second front hinge plate 403 is provided on the side surface of the second sliding frame 401. A second hydraulic cylinder 404 is provided inside the second front hinge plate 403. A second rear hinge plate 405 connected to the skeleton 1 is provided at the tail end of the second hydraulic cylinder 404; As Figure 5 and Figure 6 shown, by providing the second sliding frame 401 and the second sliding seat 402, the second sliding frame 401 is connected to the slide rail 8 by means of the second sliding seat 402 at the bottom, enabling the third horizontal moving member 9 and the grinding member 7 to move horizontally, so that the grinding member 7 can be sleeved and inserted into the pipe. When grinding work is carried out, the pipe does not need to move.

[0027] The third horizontal moving member 9 includes a suspension frame 901 connected to the speed increaser 701. Rollers 902 hung on both sides of the second sliding frame 401 are provided on the suspension frame 901. A fourth hydraulic cylinder 903 is provided on the side surface of the suspension frame 901. A support plate 904 connected to the second sliding frame 401 is provided at the tail end of the fourth hydraulic cylinder 903; As Figure 5 and Figure 7 shown, by providing the fourth hydraulic cylinder 903 and the rollers 902, the rollers 902 are hung on both sides of the second sliding frame 401, and the grinding member 7 can be supported by means of the suspension frame 901, while the fourth hydraulic cylinder 903 can drive the suspension frame 901 to move horizontally. When grinding work is carried out, the grinding member 7 is aligned with the pipe, and when the pipes are joined, the grinding member 7 is moved away.

[0028] The outer wall grinding assembly 703 includes a first rotating disk 7031 connected to the output shaft 705. An outer wall grinding block 7032 and an outer wall wiping cotton 7033 that fit with the outer wall of the pipe are embedded in the first rotating disk 7031. A chamfering cutter 7034 corresponding to the outer side edge position of the pipe is provided inside the first rotating disk 7031; As Figure 8 shown, by providing the outer wall grinding block 7032 and the outer wall wiping cotton 7033, the first rotating disk 7031 can rotate rapidly by means of the output shaft 705 and drive the outer wall grinding block 7032 to grind the outer wall of the pipe, removing the oxide layer and epidermal dirt on the outer wall of the pipe. At the same time, the powder generated by grinding is wiped by the outer wall wiping cotton 7033 on the other side to avoid a large amount of powder affecting the adhesion of the glue. The chamfering cutter 7034 provided on the first rotating disk 7031 can chamfer the pipe port, making the insertion of the pipe smoother and avoiding the problem that the edge of the pipe is too sharp and easily scratches the inner wall of the butt joint pipe.

[0029] The inner wall grinding assembly 704 includes a second rotating disk 7041 connected to the output shaft 705. The second rotating disk 7041 is internally fitted with an inner wall grinding block 7042 and an inner wall wiping cotton 7043 that fit the inner wall of the pipe; As Figure 9 shown, by setting the inner wall grinding block 7042 and the inner wall wiping cotton 7043, the first rotating disk 7031 can rotate rapidly using the output shaft 705 and drive the inner wall grinding block 7042 to grind the inner wall of the pipe, removing the oxide layer and surface dirt on the inner wall of the pipe. At the same time, the inner wall wiping cotton 7043 on the other side is used to wipe the powder generated by grinding, avoiding a large amount of powder from affecting the adhesion of the glue; In addition, it should be further noted that large PVC pipes are pre-expanded at one end during production, so the pipes can be directly butt-jointed during installation without a pipe joint. At the same time, for large PVC pipes, the sealing ring can be pre-installed in the pipe in the factory using existing mature technologies, so there is no need to install the sealing ring either.

[0030] The inner wall grinding assembly 704 is internally provided with a glue application component 11. The glue application component 11 includes a fixing plate 1101 connected to the inner wall of the second rotating disk 7041 and a storage battery 1105. An electromagnetic telescopic rod 1102 electrically connected to the storage battery 1105 is provided on the fixing plate 1101. A fixing frame 1103 is provided on the electromagnetic telescopic rod 1102, and a glue application wheel set 1104 that fits the inner wall of the pipe is provided on the side of the fixing frame 1103; As Figure 10 shown, by setting the electromagnetic telescopic rod 1102 and the storage battery 1105, the electromagnetic telescopic rod 1102 can perform telescopic movement by using the magnetic property generated after the electromagnet is energized. When glue application work is required, it moves the glue application wheel set 1104 outwards to make it fit the inner wall of the pipe, and uses the movement of the second rotating disk 7041 to realize the glue application work on the pipe. The storage battery 1105 can supply power to the electromagnetic telescopic rod 1102, and a remote control unit is further provided, which can simplify the laying of wired circuits and prevent it from affecting the work of the second rotating disk 7041.

[0031] The glue application wheel set 1104 includes a glue storage hopper 11041 connected to the fixing frame 1103. A rotating glue roller 11042 is rotatably provided on the glue storage hopper 11041, and a threaded fixing groove 1143 connected to the glue tank is opened under the glue storage hopper 11041; As Figure 11As shown in the figure, by setting up a glue storage hopper 11041, a rotating rubber roller 11042 is rotatably arranged on the glue storage hopper 11041, and the bottom is connected to the glue tank by a threaded fixing groove 1143. When the glue storage hopper 11041 is inverted, the glue in the glue tank will flow into the storage hopper and come into contact with the rotating rubber roller 11042. And it is smeared on the inner wall of the pipe as the rotating rubber roller 11042 rotates. After the rotating rubber roller 11042 fits with the inner wall of the pipe, it will rotate itself as the second rotating disc 7041 rotates. When the glue storage hopper 11041 is upright, the excess glue will flow back into the glue tank, while meeting the requirement of the rotating rubber roller 11042 for glue application, realizing the purpose of automatic feeding and avoiding the glue from solidifying due to long-term contact with the outside world.

[0032] Working principle: Place the clamping component 5 on both sides of the pipe to be joined. Then, the third hydraulic cylinder 502 drives the clamping plate 504 to rotate through the first clamping arm 501 and the second clamping arm 503, so that the clamping plate 504 clamps the pipe by using the self-tightening clamping block 6. Then, lift the pipe to a certain height. Subsequently, the third horizontal moving component 9 aligns the grinding component 7 with the pipe. With the cooperation of the second horizontal moving component 4, use the grinding component 7 to grind the inner and outer walls of the pipe to be joined. Then, apply the special PVC pipe glue inside the pipe. Subsequently, the grinding component 7 moves away, and the first horizontal moving component 3 drives the pipe at one end to move by using the clamping component 5, so that the pipes are butted, realizing the purpose of automatic grinding, glue application, and joining of PVC pipes.

[0033] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements, or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A PVC pipe connection device, comprising a skeleton (1), characterized in that: A connecting component (2) for connecting with an excavator boom is arranged on the framework (1). A slide rail (8) is arranged on the framework (1). A first horizontal moving component (3) is arranged on the slide rail (8). Hinge seats (10) are arranged under both the framework (1) and the first horizontal moving component (3). A clamping component (5) is arranged on the side surface of the hinge seat (10). A self-tightening clamping block (6) that fits the pipe is arranged on the end surface of the clamping component (5). The clamping component (5) includes a first clamping arm (501) and a second clamping arm (503) that are rotatably connected to the hinge seat (10). A third hydraulic cylinder (502) is hinged on the side surfaces of the first clamping arm (501) and the second clamping arm (503). Clamping plates (504) connected to the self-tightening clamping block (6) are arranged at the bottoms of both the first clamping arm (501) and the second clamping arm (503). A fixing pin shaft (505) connected to the self-tightening clamping block (6) is arranged on the clamping plate (504). The self-tightening clamping block (6) includes a wedge block (601) that is horizontally slidably connected to the clamping plate (504). The side surface of the wedge block (601) is set to an arc surface that fits the outer wall of the pipe, and anti-slip stripes (602) are arranged inside the arc surface. A sliding pin shaft (603) is arranged on the wedge block (601). A return spring (604) is arranged on the sliding pin shaft (603). The other end of the return spring (604) is connected to the fixing pin shaft (505).

2. The PVC pipe connection device according to claim 1, characterized in that: The connecting component (2) includes a connecting frame (201) arranged on the framework (1). A connecting plate (202) is rotatably arranged on the connecting frame (201). A first rotary oil cylinder (203) that is drivingly connected to the connecting frame (201) is arranged on the connecting plate (202). A connecting pin shaft (204) for connecting with the small arm of the excavator is arranged on one side of the connecting plate (202).

3. The PVC pipe connection device according to claim 1, characterized in that: The first horizontal moving component (3) includes a first sliding frame (301). A first sliding seat (302) that is slidably matched with the slide rail (8) is arranged under the first sliding frame (301). A first front hinge plate (303) is arranged on the side surface of the first sliding frame (301). A first hydraulic cylinder (304) is arranged inside the first front hinge plate (303). A first rear hinge plate (305) connected to the framework (1) is arranged at the tail end of the first hydraulic cylinder (304).

4. A PVC pipe connection device according to claim 1, characterized in that: A second horizontal moving component (4) is arranged on the slide rail (8). A third horizontal moving component (9) is arranged under the second horizontal moving component (4). A grinding component (7) for processing the inner and outer surfaces of the pipe is arranged on the side surface of the third horizontal moving component (9). The grinding component (7) includes a speed increaser (701) that is horizontally connected to the third one. A second rotary oil cylinder (702) is arranged at the input end of the speed increaser (701). An output shaft (705) that penetrates both sides is arranged at the output end of the speed increaser (701). Outer wall grinding assemblies (703) and inner wall grinding assemblies (704) are arranged at both ends of the output shaft (705).

5. A PVC pipe connection device according to claim 4, characterized in that: The second horizontal moving member (4) includes a second sliding frame (401). A second sliding seat (402) that is slidably engaged with a slide rail (8) is provided under the second sliding frame (401). A second front hinge plate (403) is provided on the side of the second sliding frame (401). A second hydraulic cylinder (404) is provided inside the second front hinge plate (403). A second rear hinge plate (405) connected to the skeleton (1) is provided at the tail end of the second hydraulic cylinder (404).

6. The PVC pipe connection device according to claim 5, characterized in that: The third horizontal moving member (9) includes a suspension frame (901) connected to a speed increaser (701). Rollers (902) that are hung on both sides of the second sliding frame (401) are provided on the suspension frame (901). A fourth hydraulic cylinder (903) is provided on the side of the suspension frame (901). A support plate (904) connected to the second sliding frame (401) is provided at the tail end of the fourth hydraulic cylinder (903).

7. A PVC pipe connection device according to claim 4, characterized in that: The outer wall grinding assembly (703) includes a first rotating disk (7031) connected to an output shaft (705). An outer wall grinding block (7032) and an outer wall wiping cotton (7033) that are fitted to the outer wall of the pipe are embedded in the first rotating disk (7031). A chamfering cutter (7034) corresponding to the outer side edge position of the pipe is provided inside the first rotating disk (7031).

8. A PVC pipe connection device according to claim 4, characterized in that: The inner wall grinding assembly (704) includes a second rotating disk (7041) connected to the output shaft (705). An inner wall grinding block (7042) and an inner wall wiping cotton (7043) that are fitted to the inner wall of the pipe are embedded in the second rotating disk (7041).

9. A PVC pipe connection device according to claim 8, characterized in that: A glue applying component (11) is provided inside the inner wall grinding assembly (704). The glue applying component (11) includes a fixing plate (1101) and a storage battery (1105) that are connected to the inner wall of the second rotating disk (7041). An electromagnetic telescopic rod (1102) electrically connected to the storage battery (1105) is provided on the fixing plate (1101). A fixing frame (1103) is provided on the electromagnetic telescopic rod (1102). A glue applying wheel set (1104) that is fitted to the inner wall of the pipe is provided on the side of the fixing frame (1103).

10. A PVC pipe connection device according to claim 9, characterized in that: The glue applying wheel set (1104) includes a glue storage hopper (11041) connected to the fixing frame (1103). A rotating glue roller (11042) is rotatably provided on the glue storage hopper (11041). A threaded fixing groove (1143) connected to a glue tank is opened under the glue storage hopper (11041).

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