An auxiliary connection device for pipe fittings

Abstract

An auxiliary docking device for pipe fittings includes a long plate, a first positioning mechanism, a second positioning mechanism, a third positioning mechanism, a fourth positioning mechanism, and a displacement part. The long plate is mounted on the ground via a bracket. The first and second positioning mechanisms are located on the same long side of the top surface of the long plate, while the third and fourth positioning mechanisms are located on the other long side of the top surface of the long plate. The first and third positioning mechanisms are opposite to each other in the width direction of the long plate, as are the second and fourth positioning mechanisms. The displacement part is connected to each positioning mechanism. This invention improves the accuracy and efficiency of gentle docking of pipe fitting ends.

Description

Technical Field

[0001] This utility model relates to a docking device, and more particularly to a device that can assist workers in docking the ends of two pipe fittings to facilitate subsequent welding, belonging to the technical field of pipe fitting auxiliary docking equipment. Background Technology

[0002] In the processing field, there is a requirement for pipe end joining, generally for square or round pipe ends. During the actual welding process, the ends of the two pipes need to be manually pressed together to facilitate subsequent welding. In actual production, welding is usually performed by manually holding the two pipes or placing them on a V-shaped support. This initial joining method has significant limitations, as it cannot well adapt to square pipes of various lengths and round pipes of various diameters, resulting in low welding accuracy and poor alignment of the two pipes. Therefore, a device is needed to assist workers in accurately aligning and joining the pipe ends, thereby improving the straightness of the welded pipes. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an auxiliary docking device for pipe fittings, which can not only reduce the labor intensity of workers, but also improve the accuracy and efficiency of pipe fitting end docking.

[0004] The problem described in this utility model is solved by the following technical solution: An end-joining auxiliary device for pipe fittings includes a long plate, a first positioning mechanism, a second positioning mechanism, a third positioning mechanism, a fourth positioning mechanism, and a displacement portion. The long plate is mounted on the ground via a bracket. The first and second positioning mechanisms are located on the same long side of the top surface of the long plate, while the third and fourth positioning mechanisms are located on the other long side of the top surface of the long plate. The first and third positioning mechanisms are opposite to each other in the width direction of the long plate, as are the second and fourth positioning mechanisms. The displacement portion is connected to each positioning mechanism.

[0005] The aforementioned auxiliary docking device for pipe fittings includes a displacement component comprising a first pull-down mechanism, a second pull-down mechanism, a lateral movement component, and a lifting component. The first pull-down mechanism is disposed between a first positioning mechanism and a second positioning mechanism. The second pull-down mechanism is disposed between a third positioning mechanism and a fourth positioning mechanism. The lateral movement component is disposed on a long plate and is located between the third positioning mechanism and the fourth positioning mechanism. The lifting component is disposed on the bottom surface of the long plate and is located between the first pull-down mechanism and the second pull-down mechanism.

[0006] The above-mentioned auxiliary docking device for pipe fittings includes a first positioning mechanism comprising two first positioning components, which are located on the same long side of the top surface of the long plate. Each first positioning component comprises a first square column, a first base plate, a first guide plate, a first horizontal plate, and a first lower pressure plate. The first square column is fixedly mounted on the top surface of the long plate. The first base plate is located at the bottom of the vertical end face of the first square column near the center line of the long plate. A V-shaped groove is provided at the center of the vertical end face of the first square column near the center line of the long plate. A guide hole is provided at the top of the first square column, and a first guide plate is inserted into the guide hole. The first horizontal plate is located at the top of the first guide plate, and the first lower pressure plate is located at the end of the bottom surface of the first horizontal plate, directly above the first base plate. A first horizontal support rod connects two adjacent first guide plates.

[0007] The above-mentioned auxiliary docking device for pipe fittings includes a second positioning mechanism comprising two second positioning components, which are located on the same long side of the top surface of the long plate. Each second positioning component comprises a second square column, a second bottom support plate, a second guide plate, a second horizontal plate, and a second lower pressure plate. The second square column is fixedly mounted on the top surface of the long plate. The second bottom support plate is located at the bottom of the vertical end face of the second square column near the center line of the long plate. A V-groove is located at the center of the vertical end face of the second square column near the center line of the long plate. A guide hole is located at the top of the second square column, and a second guide plate is inserted into the guide hole. The second horizontal plate is located at the top of the second guide plate, and the second lower pressure plate is located at the end of the bottom surface of the second horizontal plate, directly above the second bottom support plate. A second horizontal support rod connects two adjacent second guide plates.

[0008] The above-mentioned auxiliary docking device for pipe fittings includes a third positioning mechanism comprising two third positioning components, which are located on the same long side of the top surface of the long plate. Each third positioning component includes a third shaped column, a third bottom support plate, a third guide plate, a third horizontal plate, and a third downward pressure plate. The third shaped column presses against the top surface of the long plate. The third bottom support plate is located at the bottom of the vertical end face of the third shaped column near the center line of the long plate. A V-shaped groove is provided at the center of the vertical end face of the third shaped column near the center line of the long plate. A guide hole is provided at the top of the third shaped column, and a third guide plate is inserted into the guide hole. The third horizontal plate is located at the top of the third guide plate, and the third downward pressure plate is located at the end of the bottom surface of the third horizontal plate, directly above the third bottom support plate. A third horizontal support rod connects two adjacent third guide plates, and a bracket connects the bottom ends of the adjacent third shaped columns.

[0009] The above-mentioned auxiliary docking device for pipe fittings includes a fourth positioning mechanism comprising two fourth positioning components, which are located on the same long side of the top surface of the long plate. Each fourth positioning component includes a fourth square column, a fourth bottom support plate, a fourth guide plate, a fourth horizontal plate, and a fourth lower pressure plate. The fourth square column presses against the top surface of the long plate. The fourth bottom support plate is located at the bottom of the vertical end face of the fourth square column near the center line of the long plate. A V-shaped groove is provided at the center of the vertical end face of the fourth square column near the center line of the long plate. A guide hole is provided at the top of the fourth square column, and a fourth guide plate is inserted into the guide hole. The fourth horizontal plate is located at the top of the fourth guide plate, and the fourth lower pressure plate is located at the end of the bottom surface of the fourth horizontal plate, directly above the fourth bottom support plate. A fourth horizontal support rod connects two adjacent fourth guide plates, and a bracket connects the bottom ends of the adjacent fourth square columns.

[0010] The above-mentioned auxiliary docking device for pipe fittings includes a sliding plate, a positioning bolt, and a slide rail. The slide rail is located on the top surface of the long plate, and the center line of the slide rail is parallel to the width direction line of the long plate. The bottom surface of the sliding plate is provided with a groove, and the sliding plate slides on the slide rail through the groove at its bottom end. The center of the sliding plate is provided with a threaded hole, and the positioning bolt passes through the central threaded hole of the sliding plate and presses against the long plate. The two ends of the sliding plate are respectively connected to the nearest third square column and fourth square column.

[0011] The above-mentioned end auxiliary docking device for pipe fittings includes a first pull-down mechanism comprising a first horizontal rod and a first vertical rod; the centerline of the first horizontal rod is parallel to the length direction of the long plate, and the first horizontal rod is located directly below the long plate; there are two first vertical rods, which are respectively disposed at both ends of the first horizontal rod, the top end of the first first vertical rod is connected to the first horizontal support rod, and the top end of the second first vertical rod is connected to the second horizontal support rod.

[0012] The above-mentioned end auxiliary docking device for pipe fittings includes a second pull-down mechanism comprising a second horizontal rod and a second vertical rod; the centerline of the second horizontal rod is parallel to the length direction of the long plate, and the second horizontal rod is located directly below the long plate; there are two second vertical rods, which are respectively set at both ends of the second horizontal rod, the top end of the first second vertical rod is connected to the third horizontal support rod, and the top end of the second second vertical rod is connected to the fourth horizontal support rod.

[0013] The above-mentioned auxiliary docking device for pipe fittings includes a lifting component comprising an insert plate, a sleeve, and an electric cylinder. The insert plate is located at the center of the end face of the first horizontal rod near the second horizontal rod, and the sleeve is located at the center of the end face of the second horizontal rod near the first horizontal rod. The sleeve has an insertion hole, and the insert plate is inserted into the hole at the end of the sleeve. The electric cylinder housing is located at the end of the bottom face of the insert plate away from the sleeve, and the end of its piston rod passes through the through hole of the insert plate and connects to the bottom face of the long plate.

[0014] This utility model clamps and positions the pipe fittings through various positioning mechanisms, ensuring that the ends of the two pipe fittings can fit together and that subsequent welding operations can proceed smoothly; the pull-down mechanism ensures that the square tube can be reliably clamped; the V-shaped grooves on the end faces of the square columns on both sides reliably center and clamp the round tube. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a downward angle; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention at an elevation angle.

[0016] The list of labels in the diagram is as follows: 1. Long plate, 2. First pull-down mechanism, 3. Second pull-down mechanism, 4. First square column, 5. First base plate, 6. First guide plate, 7. First horizontal plate, 8. First pressure plate, 9. Second positioning mechanism, 10. Third positioning mechanism, 11. Fourth positioning mechanism, 12. Slide plate, 13. Positioning bolt, 14. Slide rail, 15. Insert plate, 16. Sleeve, 17. Electric cylinder. Detailed Implementation

[0017] See Figure 1 and Figure 2 This utility model includes a long plate 1, a first positioning mechanism, a second positioning mechanism 9, a third positioning mechanism 10, a fourth positioning mechanism 11, and a displacement part; the long plate 1 is set on the ground by a bracket; the first positioning mechanism and the second positioning mechanism 9 are set on the same long side of the top surface of the long plate 1, and the third positioning mechanism 10 and the fourth positioning mechanism 11 are set on the other long side of the top surface of the long plate 1. The first positioning mechanism and the third positioning mechanism 10 are opposite to each other in the width direction of the long plate 1, and the second positioning mechanism 9 and the fourth positioning mechanism 11 are opposite to each other in the width direction of the long plate 1; the displacement part is connected to each positioning mechanism; the four positioning mechanisms cooperate to clamp the pipe.

[0018] The displacement part includes a first pull-down mechanism 2, a second pull-down mechanism 3, a lateral movement component, and a lifting component; the first pull-down mechanism 2 is located between the first positioning mechanism and the second positioning mechanism 9; the pull-down mechanism can drive the guide plate in the positioning mechanism to rise and fall synchronously, thereby driving the pressure plate to rise and fall synchronously, and pressing the square tube by the downward movement of the pressure plate to ensure that the square tube does not move easily during the welding process after the joint is connected.

[0019] The second pull-down mechanism 3 is disposed between the third positioning mechanism 10 and the fourth positioning mechanism 11; the transverse moving member is disposed on the long plate 1 and is disposed between the third positioning mechanism 10 and the fourth positioning mechanism 11; the transverse moving member can drive the third positioning mechanism 10 and the fourth positioning mechanism 11 to move closer to the first positioning mechanism and the second positioning mechanism, thereby clamping and positioning the middle tube to ensure that the tubes at both ends can be aligned; the lifting member is disposed on the bottom end face of the long plate 1 and is disposed between the first pull-down mechanism 2 and the second pull-down mechanism 3; the lifting member can drive the first pull-down mechanism 2 and the second pull-down mechanism 3 to rise and fall synchronously, and then drive all the pressure plates to rise and fall synchronously through the pull-down mechanism, thereby pressing the square tube by the descent of the pressure plates to prevent it from moving during the welding process.

[0020] The first positioning mechanism includes two first positioning components, which are located on the same long side of the top surface of the long plate 1. Each first positioning component includes a first square column 4, a first bottom support plate 5, a first guide plate 6, a first horizontal plate 7, and a first lower pressure plate 8. The first square column is fixedly mounted on the top surface of the long plate 1. The first bottom support plate 5 is located at the bottom of the vertical end face of the first square column near the center line of the long plate 1. The bottom corner of the square tube is positioned by pressing against the right angle formed by the first square column 4 and the first lower pressure plate 8. The center of the vertical end face of the first square column near the center line of the long plate 1 is... The tube is provided with a V-shaped groove; when the square columns on both sides are close to each other, the two V-shaped grooves can clamp the round tube well; the top of the first square column 4 is provided with a guide hole, and a first guide plate 6 is inserted into the guide hole; the first horizontal plate 7 is located at the top of the first guide plate 6, and the first pressure plate 8 is located at the end of the bottom surface of the first horizontal plate 7, and the first pressure plate 8 is located directly above the first bottom support plate 5; a first horizontal support rod is connected between two adjacent first guide plates 6; the pull-down mechanism drives the pressure plate to rise and fall synchronously through the horizontal support rod, and the downward-moving pressure plate touches the top surface of the square tube to ensure that the square tube does not move easily.

[0021] The principle of the second positioning mechanism is the same as that of the first positioning mechanism; the second positioning mechanism 9 includes two second positioning components, and the two second positioning components are set on the long side of the same side of the top surface of the long plate 1; the second positioning component includes a second square column, a second bottom support plate, a second guide plate, a second horizontal plate and a second pressure plate; the second square column is fixedly set on the top surface of the long plate 1; the second bottom support plate is set at the bottom end of the vertical end face of the second square column near the center line of the long plate 1; a V-shaped groove is set at the center of the vertical end face of the second square column near the center line of the long plate 1; a guide hole is set at the top of the second square column, and a second guide plate is inserted into the guide hole; the second horizontal plate is set at the top of the second guide plate, and the second pressure plate is set at the end of the bottom end face of the second horizontal plate, and the second pressure plate is located directly above the second bottom support plate; a second horizontal support rod is connected between two adjacent second guide plates.

[0022] Both the third and fourth positioning mechanisms are slidable, moving closer to or further away from the first and second positioning mechanisms. The first pipe fitting is clamped by the mutual approach of the first and third positioning mechanisms, and the second pipe fitting is clamped by the second and fourth positioning mechanisms. After the two pipe fittings are clamped, their ends are aligned, allowing for welding operations. The third positioning mechanism 10 includes two third positioning elements, both positioned on the same long side of the top surface of the long plate 1. Each third positioning element includes a third triangular column, a third base plate, a third guide plate, a third horizontal plate, and a third pressure plate. The third-shaped column presses against the top surface of the long plate 1; the third bottom support plate is located at the bottom of the vertical end face of the third-shaped column near the center line of the long plate 1; a V-shaped groove is provided at the center of the vertical end face of the third-shaped column near the center line of the long plate 1; a guide hole is provided at the top of the third-shaped column, and a third guide plate is inserted into the guide hole; a third horizontal plate is located at the top of the third guide plate, and a third lower pressure plate is located at the end of the bottom end face of the third horizontal plate, with the third lower pressure plate directly above the third bottom support plate; a third horizontal support rod is connected between two adjacent third guide plates, and a bracket is connected between the bottom ends of the adjacent end faces of two adjacent third-shaped columns.

[0023] The fourth positioning mechanism 11 includes two fourth positioning components, which are located on the same long side of the top surface of the long plate 1. Each fourth positioning component includes a fourth square column, a fourth base plate, a fourth guide plate, a fourth horizontal plate, and a fourth lower pressure plate. The fourth square column presses against the top surface of the long plate 1. The fourth base plate is located at the bottom of the vertical end face of the fourth square column near the center line of the long plate 1. A V-shaped groove is provided at the center of the vertical end face of the fourth square column near the center line of the long plate 1. A guide hole is provided at the top of the fourth square column, and a fourth guide plate is inserted into the guide hole. The fourth horizontal plate is located at the top of the fourth guide plate, and the fourth lower pressure plate is located at the end of the bottom surface of the fourth horizontal plate, directly above the fourth base plate. A fourth horizontal support rod connects two adjacent fourth guide plates, and a bracket connects the bottom ends of the adjacent fourth square columns, ensuring that the two adjacent fourth square columns can slide synchronously.

[0024] The transverse component includes a sliding plate 12, a positioning bolt 13, and a slide rail 14. The slide rail 14 is disposed on the top surface of the long plate 1, and the center line of the slide rail 14 is parallel to the width direction line of the long plate 1. The bottom surface of the sliding plate 12 is provided with a sliding groove, and the sliding plate 12 is slidably disposed on the slide rail 14 through the sliding groove at its bottom end. The sliding plate 12 can slide through the slide rail 14, thereby smoothly approaching the first positioning mechanism and the second positioning mechanism. The center of the sliding plate 12 is provided with a threaded hole, and the positioning bolt 13 passes through the central threaded hole of the sliding plate 12 and presses against the long plate 1. Tightening the positioning bolt can fix the position of the sliding plate 12, which also relatively fixes the positions of the third positioning mechanism and the fourth positioning mechanism, ensuring that the pipe between each positioning mechanism is reliably clamped. The two ends of the sliding plate 12 are respectively connected to the nearest third square column and fourth square column. The sliding plate 12 drives the third square column and the fourth square column to slide synchronously, so that they approach the opposite first square column and second square column, thereby clamping the middle pipe.

[0025] The first pull-down mechanism 2 includes a first horizontal rod and a first vertical rod; the centerline of the first horizontal rod is parallel to the length direction of the long plate 1, and the first horizontal rod is located directly below the long plate 1; there are two first vertical rods, which are respectively set at both ends of the first horizontal rod, the top of the first first vertical rod is connected to the first horizontal support rod, and the top of the second first vertical rod is connected to the second horizontal support rod; when the first horizontal rod moves down, it drives the first horizontal support rod to move down synchronously, which in turn drives the lower pressure plate to move down, and finally the lower pressure plate touches the top surface of the square tube.

[0026] The second pull-down mechanism 3 is similar to the first pull-down mechanism, and it can drive the third and fourth pressure plates downward. The second pull-down mechanism 3 includes a second horizontal rod and a second vertical rod. The center line of the second horizontal rod is parallel to the length direction line of the long plate 1, and the second horizontal rod is located directly below the long plate 1. There are two second vertical rods, which are respectively set at both ends of the second horizontal rod. The top end of the first second vertical rod is connected to the third horizontal support rod, and the top end of the second second vertical rod is connected to the fourth horizontal support rod.

[0027] The lifting component includes an insert plate 15, a sleeve 16, and an electric cylinder 17. The insert plate 15 is located at the center of the end face of the first horizontal rod near the second horizontal rod, and the sleeve 16 is located at the center of the end face of the second horizontal rod near the first horizontal rod. The sleeve 16 has an insertion hole, and the insert plate 15 is inserted into the insertion hole at the end of the sleeve 16. The housing of the electric cylinder 17 is located at the end of the bottom face of the insert plate 15 away from the sleeve 16, and the end of its piston rod passes through the through hole of the insert plate 15 and connects to the bottom face of the long plate 1. When the horizontal rods on both sides approach or move away from each other, the cooperation of the sleeve 16 and the insert plate 15 ensures that the first and second horizontal rods can maintain a synchronous lifting state. The action of the electric cylinder 17 can drive the sleeve and the insert plate to lift synchronously, thereby driving the first and second horizontal rods to lift synchronously.

[0028] Operating principle: The clamping steps for square tubes and round tubes are different; Round tube: Press the circumferential sidewall of the round tube into the V-groove of the first square column and the second square column, then push the slide plate 12 to make the third square column and the fourth square column close to the opposite square column until the V-groove of each square column fits and locks the round tube. Then push the round tubes on both sides closer to each other and connect them. After the connection is complete, tighten the positioning bolts. At this time, the round tube is fixed and welding can begin. Square tube: Press the right-angled edge of one side of the bottom of the square tube against the right-angled edge formed by the first square column and the first base plate. Do the same for the other square tube, pressing it against the right-angled edge formed by the second square column and the second base plate. Then push the sliding plate so that the right-angled edges of the third square column and the third base plate, as well as the right-angled edges of the fourth square column and the fourth base plate, press against the right-angled plate on the other side of the square tube. Then push the tube to align its ends and tighten the positioning bolts. Then start the electric cylinder 17 to make the pull-down mechanism go down. At this time, all the lower pressure plates go down and press against the top surface of the square tube to align and fix it. At this time, the square tube is fixed and the subsequent welding operation can begin.

Claims

1. An end-joining auxiliary device for pipe fittings, characterized in that: It includes a long plate (1), a first positioning mechanism, a second positioning mechanism (9), a third positioning mechanism (10), a fourth positioning mechanism (11), and a displacement part; the long plate (1) is set on the ground by a bracket; the first positioning mechanism and the second positioning mechanism (9) are set on the same long side of the top surface of the long plate (1), the third positioning mechanism (10) and the fourth positioning mechanism (11) are set on the other long side of the top surface of the long plate (1), the first positioning mechanism and the third positioning mechanism (10) are opposite to each other in the width direction of the long plate (1), and the second positioning mechanism (9) and the fourth positioning mechanism (11) are opposite to each other in the width direction of the long plate (1); the displacement part is connected to each positioning mechanism.

2. The end auxiliary docking device for pipe fittings according to claim 1, characterized in that: The displacement part includes a first pull-down mechanism (2), a second pull-down mechanism (3), a lateral movement component, and a lifting component; the first pull-down mechanism (2) is disposed between the first positioning mechanism and the second positioning mechanism (9); the second pull-down mechanism (3) is disposed between the third positioning mechanism (10) and the fourth positioning mechanism (11); the lateral movement component is disposed on the long plate (1) and is disposed between the third positioning mechanism (10) and the fourth positioning mechanism (11); the lifting component is disposed on the bottom end face of the long plate (1) and is disposed between the first pull-down mechanism (2) and the second pull-down mechanism (3).

3. The end auxiliary docking device for pipe fittings according to claim 2, characterized in that: The first positioning mechanism includes two first positioning components, which are located on the same long side of the top surface of the long plate (1). The first positioning component includes a first square column (4), a first bottom support plate (5), a first guide plate (6), a first horizontal plate (7), and a first lower pressure plate (8). The first square column is fixedly located on the top surface of the long plate (1). The first bottom support plate (5) is located at the bottom of the vertical end face of the first square column near the center line of the long plate (1). A V-shaped groove is provided at the center of the vertical end face of the first square column near the center line of the long plate (1). A guide hole is provided at the top of the first square column (4), and the first guide plate (6) is inserted into the guide hole. The first horizontal plate (7) is located at the top of the first guide plate (6), and the first lower pressure plate (8) is located at the end of the bottom surface of the first horizontal plate (7). The first lower pressure plate (8) is located directly above the first bottom support plate (5). A first horizontal support rod is connected between two adjacent first guide plates (6).

4. The end auxiliary docking device for pipe fittings according to claim 3, characterized in that: The second positioning mechanism (9) includes two second positioning components, which are located on the same long side of the top surface of the long plate (1). The second positioning component includes a second square column, a second bottom support plate, a second guide plate, a second horizontal plate, and a second pressure plate. The second square column is fixedly located on the top surface of the long plate (1). The second bottom support plate is located at the bottom of the vertical end face of the second square column near the center line of the long plate (1). A V-shaped groove is provided at the center of the vertical end face of the second square column near the center line of the long plate (1). A guide hole is provided at the top of the second square column, and a second guide plate is inserted into the guide hole. The second horizontal plate is located at the top of the second guide plate, and the second pressure plate is located at the end of the bottom surface of the second horizontal plate. The second pressure plate is located directly above the second bottom support plate. A second horizontal support rod is connected between two adjacent second guide plates.

5. The end auxiliary docking device for pipe fittings according to claim 4, characterized in that: The third positioning mechanism (10) includes two third positioning components, which are located on the same long side of the top surface of the long plate (1). The third positioning component includes a third shaped column, a third bottom support plate, a third guide plate, a third horizontal plate, and a third pressure plate. The third shaped column presses against the top surface of the long plate (1). The third bottom support plate is located at the bottom of the vertical end face of the third shaped column near the center line of the long plate (1). A V-shaped groove is provided at the center of the vertical end face of the third shaped column near the center line of the long plate (1). A guide hole is provided at the top of the third shaped column, and a third guide plate is inserted into the guide hole. The third horizontal plate is located at the top of the third guide plate, and the third pressure plate is located at the end of the bottom surface of the third horizontal plate. The third pressure plate is located directly above the third bottom support plate. A third horizontal support rod is connected between two adjacent third guide plates, and a bracket is connected between the bottom ends of the adjacent third shaped columns.

6. The end auxiliary docking device for pipe fittings according to claim 5, characterized in that: The fourth positioning mechanism (11) includes two fourth positioning components, which are located on the same long side of the top surface of the long plate (1). The fourth positioning component includes a fourth square column, a fourth bottom support plate, a fourth guide plate, a fourth horizontal plate, and a fourth lower pressure plate. The fourth square column presses against the top surface of the long plate (1). The fourth bottom support plate is located at the bottom of the vertical end face of the fourth square column near the center line of the long plate (1). A V-shaped groove is provided at the center of the vertical end face of the fourth square column near the center line of the long plate (1). A guide hole is provided at the top of the fourth square column, and a fourth guide plate is inserted into the guide hole. The fourth horizontal plate is located at the top of the fourth guide plate, and the fourth lower pressure plate is located at the end of the bottom surface of the fourth horizontal plate. The fourth lower pressure plate is located directly above the fourth bottom support plate. A fourth horizontal support rod is connected between two adjacent fourth guide plates, and a bracket is connected between the bottom ends of the adjacent fourth square columns.

7. The end auxiliary docking device for pipe fittings according to claim 6, characterized in that: The transverse component includes a sliding plate (12), a positioning bolt (13), and a slide rail (14); the slide rail (14) is located on the top surface of the long plate (1), and the center line of the slide rail (14) is parallel to the width direction line of the long plate (1); the bottom surface of the sliding plate (12) is provided with a sliding groove, and the sliding plate (12) is slidably mounted on the slide rail (14) through the sliding groove at its bottom end; the center of the sliding plate (12) is provided with a threaded hole, and the positioning bolt (13) passes through the central threaded hole of the sliding plate (12) and presses against the long plate (1); the two ends of the sliding plate (12) are respectively connected to the nearest third square column and fourth square column.

8. The end auxiliary docking device for pipe fittings according to claim 7, characterized in that: The first pull-down mechanism (2) includes a first horizontal bar and a first vertical bar; the center line of the first horizontal bar is parallel to the length direction line of the long plate (1), and the first horizontal bar is located directly below the long plate (1); there are two first vertical bars, which are respectively set at both ends of the first horizontal bar, the top end of the first vertical bar is connected to the first horizontal support bar, and the top end of the second vertical bar is connected to the second horizontal support bar.

9. The end auxiliary docking device for pipe fittings according to claim 8, characterized in that: The second pull-down mechanism (3) includes a second horizontal bar and a second vertical bar; the center line of the second horizontal bar is parallel to the length direction line of the long plate (1), and the second horizontal bar is located directly below the long plate (1); there are two second vertical bars, which are respectively set at both ends of the second horizontal bar, the top end of the first second vertical bar is connected to the third horizontal support bar, and the top end of the second second vertical bar is connected to the fourth horizontal support bar.

10. The end auxiliary docking device for pipe fittings according to claim 9, characterized in that: The lifting component includes a plate (15), a sleeve (16), and an electric cylinder (17); the plate (15) is located at the center of the end face of the first horizontal rod near the second horizontal rod, and the sleeve (16) is located at the center of the end face of the second horizontal rod near the first horizontal rod; the sleeve (16) is provided with a hole, and the plate (15) is inserted into the hole at the end of the sleeve (16); the housing of the electric cylinder (17) is located at the end of the bottom end face of the plate (15) away from the sleeve (16), and the end of its piston rod passes through the hole of the plate (15) and is connected to the bottom end face of the long plate (1).

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