Press-fit connecting device for steel pipe plug

Abstract

The invention relates to the technical field of steel pipe plugs, in particular to a steel pipe plug press-fit connecting device which comprises a workbench, a steel pipe body and a plug body and further comprises a plurality of extrusion plates which are all arranged above the workbench and used for extruding the steel pipe body. According to the press-fit connecting device for the steel pipe plug, one end of the steel pipe body is synchronously extruded through the multiple extrusion plates, rapid and stable embedding of the plug body is achieved, the press-fit efficiency is remarkably improved, and the press-fit connecting device has the advantages that the press-fit connecting device is simple in structure, convenient to use and high in practicability. The extrusion grooves matched with the plug body and one end of the steel pipe body are formed in the opposite ends of the extrusion plates, it is ensured that pressure is evenly distributed in the pressing process, local overload or untight sealing is avoided, the steel pipe body can be pre-corrected through the correction frame and the correction grooves arranged on the workbench, the coaxiality of the steel pipe body and the plug body is ensured, and the pressing quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe plugs, and specifically to a press-fitting connection device for steel pipe plugs. Background Art

[0002] A steel pipe plug, also known as a pipe cap, a head, or a blind head, is a pipe fitting used to seal the end of a steel pipe. Its main function is to prevent medium leakage or external impurities from entering the pipeline system. It is widely used in fields such as petroleum, chemical industry, water treatment, construction, and machinery manufacturing. It is particularly indispensable during pipeline maintenance, testing, or temporary plugging. Steel pipe plugs are divided into various types, such as welded plugs, threaded plugs, crimped plugs, and flange plugs;

[0003] However, in our actual life, we found that during the installation of existing crimped plugs, manual crimping pliers or electric crimping pliers are usually used. However, manual crimping pliers rely on manual operation, and long-term use may cause worker fatigue, affecting the installation efficiency. Moreover, manual operation is difficult to ensure that the pressure of each crimping is consistent, which may lead to unstable crimping effects and increase the risk of leakage. Electric crimping pliers rely on battery power supply. If the battery power is insufficient or the charging efficiency is low, it will cause frequent interruption of operations and is not suitable for long-term work. Therefore, we propose a press-fitting connection device for steel pipe plugs. Summary of the Invention

[0004] One technical problem to be solved by this application is: when it is necessary to perform crimping installation of a steel pipe plug, how to reduce the dependence on manpower while also improving the crimping efficiency of the steel pipe plug, ensuring that the crimping pressure is consistent each time, and reducing the risk of leakage.

[0005] To solve the above technical problem, the embodiment of this application provides a press-fitting connection device for steel pipe plugs, including a workbench, a steel pipe body, and a plug body, and further including:

[0006] Extrusion plates, a plurality of which are provided, and all the plurality of extrusion plates are arranged above the workbench and are used to extrude the steel pipe body, driving the plug body to be embedded at one end of the steel pipe body. The opposite ends of the plurality of extrusion plates are inclined surfaces, and the opposite ends of the plurality of extrusion plates are provided with extrusion grooves, and all the plurality of extrusion grooves are used in cooperation with the plug body and one end of the steel pipe body;

[0007] Drive plates, a plurality of which are provided, and each of the plurality of drive plates is attached to the opposite end of the corresponding extrusion plate and is slidably arranged at one end of its inclined surface;

[0008] The pressing assembly is arranged above the workbench. By using the pressing assembly, multiple driving plates are driven to slide at the opposite ends of the corresponding pressing plates, and the inclined surfaces of the multiple pressing plates are pressed, so as to drive the multiple pressing plates to press one end of the steel pipe body, thereby embedding the plug body into the steel pipe body.

[0009] In some embodiments, the pressing assembly includes a support member arranged above the workbench for supporting the positions of the multiple pressing plates. A driving member is arranged above the workbench. By using the driving member to generate power, multiple driving plates are driven to slide at the opposite ends of the corresponding pressing plates. A transmission member is arranged above the workbench. By using the transmission member to transmit the power generated by the driving member, multiple driving plates are driven to slide outside the multiple pressing plates.

[0010] In some embodiments, the support member includes a support plate arranged on the workbench. A support rod is fixedly arranged on the support plate through bolts. A round plate is arranged at the end of the support rod away from the support plate. Multiple pressing plates are all slidably arranged in the round plate, and the multiple pressing plates are arranged in an annular equidistant manner centered on the axis of the round plate. Multiple limiting plates are slidably arranged in the round plate, and limiting springs are arranged at the bottoms of the multiple limiting plates. The other ends of the multiple limiting springs are all arranged in the round plate. One ends of the multiple limiting plates are arranged on one side of the corresponding pressing plates.

[0011] In some embodiments, the driving member includes a first electric push rod arranged at the bottom of the workbench. A push plate is arranged at the output end of the first electric push rod. A driving box for storing hydraulic oil is arranged at the bottom of the workbench. The push plate is slidably arranged in the driving box. Multiple driving hoses for transmitting hydraulic oil are arranged at one end of the driving box away from the first electric push rod. One ends of the multiple driving hoses away from the driving box are provided with a driving sleeve. The driving sleeve is slidably arranged outside the support rod, and multiple driving plates are all arranged on the inner wall of the driving sleeve. The driving hoses communicate with the driving sleeve.

[0012] In some embodiments, the transmission member includes a first sealed plate arranged outside the support rod. A first sealing strip is arranged outside the first sealed plate. The driving sleeve is slidably arranged outside the first sealed plate. A second sealed plate is arranged on the inner wall of the driving sleeve, and a second sealing strip is arranged in the second sealed plate. The second sealed plate is slidably arranged outside the support rod. The driving hoses are located between the first sealed plate and the second sealed plate.

[0013] In some embodiments, a correction frame is arranged on the workbench. A correction groove is opened at the top of the correction frame, and the height of the axis of the correction frame is the same as that of the round plate. The correction groove is used in cooperation with the steel pipe body.

[0014] In some embodiments, a guide member is provided on the outer side of the support rod. The guide member includes a plurality of guide grooves formed on the outer side of the support rod. Guide plates are slidably arranged in the plurality of guide grooves, and the plurality of guide plates are all arranged at one end of the drive sleeve close to the support plate.

[0015] In some embodiments, a conveyor belt for transporting the steel pipe body is provided at the bottom of the workbench. An intermittent feeding assembly is provided above the workbench. The intermittent feeding assembly is used to drive the steel pipe body and the plug body for transportation. A blanking plate is provided at the top of the workbench, and one end of the blanking plate close to the steel pipe body is in a slope shape;

[0016] The intermittent feeding assembly includes a clamping member arranged on the workbench. The clamping member is used to clamp and transport the steel pipe body above the conveyor belt, and drive the steel pipe body to be concentric with the circular plate. A pushing and pulling member is arranged on the workbench. The pushing and pulling member is used to drive the steel pipe body concentric with the circular plate into the space between a plurality of pressing plates.

[0017] In some embodiments, the clamping member includes a clamping shaft rotatably arranged on the workbench. A clamping plate is arranged on the outer side of the clamping shaft. A plurality of clamping brackets are arranged on the outer side of the clamping plate. Arc-shaped plates are arranged at one ends of the plurality of clamping brackets away from the clamping plate. A plurality of balls are rotatably arranged in the plurality of arc-shaped plates. Clamping magnets for cooperating with the steel pipe body are arranged at the concave portions of the plurality of arc-shaped plates.

[0018] In some embodiments, the pushing and pulling member includes a second electric push rod arranged on the workbench. The second electric push rod and the circular plate are concentric. A push rod is arranged at the output end of the second electric push rod. A pushing and pulling magnet for cooperating with the steel pipe body is arranged at one end of the push rod away from the second electric push rod;

[0019] A pushing and pulling wheel is arranged on the outer side of the clamping shaft. A plurality of first sliding grooves are formed on the outer side of the pushing and pulling wheel. Second sliding grooves are arranged on one side of the plurality of first sliding grooves close to the clamping plate, and the plurality of second sliding grooves communicate with the plurality of first sliding grooves. The plurality of second sliding grooves are closer to the axis of the pushing and pulling wheel than the first sliding grooves. A plurality of third sliding grooves are formed on the outer side of the pushing and pulling wheel. One end of the third sliding groove communicates with one end of the second sliding groove close to the first sliding groove, and the other end extends to the outside of another first sliding groove and communicates with the end of the first sliding groove away from the second sliding groove. The third sliding groove is in a slope shape. The end communicating with the second sliding groove is at the same height as the second sliding groove, and the end communicating with the first sliding groove is flush with the bottom of the first sliding groove, presenting an overall slope shape;

[0020] A first sliding rod is provided at the bottom of the push-pull rod. A second sliding rod is slidably arranged within the first sliding rod. A telescopic spring is provided at the top of the second sliding rod, and the top of the telescopic spring is arranged within the first sliding rod. The bottom of the second sliding rod is slidably arranged within the first sliding groove, and the second sliding groove cooperates with the first sliding groove, the second sliding groove, and the third sliding groove for use.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. By synchronously extruding one end of the steel pipe body with multiple pressing plates, the rapid and stable embedding of the plug body is realized, significantly improving the pressing efficiency. Pressing grooves matching the plug body and one end of the steel pipe body are provided at the opposite ends of the pressing plates, ensuring uniform distribution of pressure during the pressing process, avoiding local overload or poor sealing. The correction frame and correction groove provided on the workbench can pre-correct the steel pipe body to ensure the coaxiality of the steel pipe body and the plug body, improving the pressing quality.

[0023] 2. The clamping member realizes the precise clamping and positioning of the steel pipe body through structures such as the clamping shaft, the clamping plate, the clamping bracket, and the arc-shaped plate, ensuring that the steel pipe body and the circular plate maintain the same axis. The pushing and pulling member realizes the precise pushing and pulling of the steel pipe body through structures such as the second electric push rod, the push-pull rod, and the push-pull magnet, ensuring that the steel pipe body smoothly enters between the multiple pressing plates for pressing, and driving the steel pipe body to separate in time after the steel pipe body is extruded. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the plug body of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the pressing assembly of the present invention;

[0027] Figure 4 It is a schematic diagram of a partial structure of the driving member of the present invention;

[0028] Figure 5 It is a schematic side sectional view of the structure of the driving box of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the guiding member of the present invention;

[0030] Figure 7 It is a schematic side sectional view of the structure of the driving sleeve of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the transmission member of the present invention;

[0032] Figure 9Schematic side sectional view of the circular plate structure of the present invention;

[0033] Figure 10 Schematic diagram of the structure of Embodiment 2 of the present invention;

[0034] Figure 11 Schematic diagram of the structure of the intermittent feeding assembly of the present invention;

[0035] Figure 12 Schematic diagram of the structure of the clamping member of the present invention;

[0036] Figure 13 Schematic diagram of a partial structure of the pushing and pulling member of the present invention;

[0037] Figure 14 Schematic diagram of the structure of the telescopic spring of the present invention;

[0038] Figure 15 Schematic side sectional view of the structure of the second sliding groove of the present invention;

[0039] Figure 16 Schematic side sectional view of the structure of the third sliding groove of the present invention.

[0040] In the figure: 1, workbench; 2, steel pipe body; 3, plug body; 4, extrusion plate; 5, extrusion groove; 6, driving plate; 7, pressing assembly; 8, support member; 81, support plate; 82, support rod; 83, circular plate; 84, limiting plate; 85, limiting spring; 9, driving member; 91, first electric push rod; 92, pushing plate; 93, driving box; 94, driving hose; 95, driving sleeve; 10, transmission member; 101, first sealing plate; 102, first sealing strip; 103, second sealing plate; 104, second sealing strip; 11, correction frame; 12, correction groove; 13, guiding member; 131, guiding groove; 132, guiding plate; 14, conveyor belt; 15, intermittent feeding assembly; 16, blanking plate; 17, clamping member; 171, clamping shaft; 172, clamping plate; 173, clamping bracket; 174, arc plate; 175, ball; 176, clamping magnet; 18, pushing and pulling member; 181, second electric push rod; 182, push-pull rod; 183, push-pull magnet; 184, push-pull wheel; 185, first sliding groove; 186, second sliding groove; 187, third sliding groove; 188, first sliding rod; 189, second sliding rod; 1810, telescopic spring. Detailed implementation manners

[0041] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0042] Example 1: Please refer to Figures 1-9 , the present invention provides a technical solution: a pressing connection device for a steel pipe plug, including a workbench 1, a steel pipe body 2 and a plug body 3, and further including:

[0043] Extrusion plates 4, a plurality of which are provided, and the plurality of extrusion plates 4 are all arranged above the workbench 1 for extruding the steel pipe body 2 to drive the plug body 3 to be embedded at one end of the steel pipe body 2. The opposite ends of the plurality of extrusion plates 4 are inclined surfaces, and the opposite ends of the plurality of extrusion plates 4 are respectively provided with extrusion grooves 5, and the plurality of extrusion grooves 5 are all used in cooperation with the plug body 3 and one end of the steel pipe body 2;

[0044] Drive plates 6, a plurality of which are provided, and the plurality of drive plates 6 are respectively attached to the opposite ends of the corresponding extrusion plates 4 and are slidably arranged at one end of their inclined surfaces;

[0045] A pressing component 7 is arranged above the workbench 1. The pressing component 7 is used to drive the plurality of drive plates 6 to slide on the opposite ends of the corresponding extrusion plates 4 and extrude the inclined surfaces of the plurality of extrusion plates 4, so as to drive the plurality of extrusion plates 4 to extrude one end of the steel pipe body 2, so that the plug body 3 is embedded in the steel pipe body 2.

[0046] The pressing component 7 includes a support member 8 arranged above the workbench 1 for supporting the positions of the plurality of extrusion plates 4. A driving member 9 is arranged above the workbench 1. The driving member 9 is used to generate power to drive the plurality of drive plates 6 to slide on the opposite ends of the corresponding extrusion plates 4. A transmission member 10 is arranged above the workbench 1. The transmission member 10 is used to transmit the power generated by the driving member 9 to drive the plurality of drive plates 6 to slide outside the plurality of extrusion plates 4.

[0047] The support member 8 includes a support plate 81 disposed on the workbench 1. A support rod 82 is fixedly disposed on the support plate 81 by bolts. One end of the support rod 82 away from the support plate 81 is provided with a circular plate 83. A plurality of pressing plates 4 are all slidably disposed within the circular plate 83, and the plurality of pressing plates 4 are arranged annularly and equidistantly centered on the axis of the circular plate 83. A plurality of limiting plates 84 are slidably disposed within the circular plate 83, and limiting springs 85 are provided at the bottoms of the plurality of limiting plates 84. The other ends of the plurality of limiting springs 85 are all disposed within the circular plate 83. One ends of the plurality of limiting plates 84 are all disposed on one side of the corresponding pressing plate 4. When the plurality of driving plates 6 on the inner wall of the driving sleeve 95 press the pressing plate 4, the pressing plate 4 will slide within the circular plate 83 when being pressed. At this time, the limiting plate 84 disposed on one side of the pressing plate 4 will be in close fit with the limiting groove within the circular plate 83, preventing the pressing plate 4 from moving excessively, thereby ensuring that the pressing plate 4 operates stably within a predetermined range and maintaining a uniform pressing force. When the limiting plate 84 moves, the limiting spring 85 disposed at the bottom of the limiting plate 84 will start to be compressed and store energy. When the driving sleeve 95 retracts, the limiting spring 85 releases the stored energy and pushes the limiting plate 84 to reset, ensuring that the pressing plate 4 returns to its initial position. Its function is to ensure the tight combination of the plug body 3 and the steel pipe body 2 by precisely controlling the moving range and force of the pressing plate 4, and to improve the stability and sealing performance of the overall structure.

[0048] The driving member 9 includes a first electric push rod 91 disposed at the bottom of the workbench 1. The output end of the first electric push rod 91 is provided with a push plate 92. A driving box 93 for storing hydraulic oil is disposed at the bottom of the workbench 1. The push plate 92 is slidably disposed within the driving box 93. A plurality of driving hoses 94 for transmitting hydraulic oil are disposed at one end of the driving box 93 away from the first electric push rod 91. The other ends of the plurality of driving hoses 94 away from the driving box 93 are provided with a driving sleeve 95. The driving sleeve 95 is slidably disposed outside the support rod 82, and a plurality of driving plates 6 are all disposed on the inner wall of the driving sleeve 95. The driving hoses 94 communicate with the driving sleeve 95. When the first electric push rod 91 is started, the first electric push rod 91 will push the push plate 92 at its output end and cause the push plate 92 to slide within the driving box 93, so that the hydraulic oil within the driving box 93 is transmitted to the driving sleeve 95 through the driving hoses 94. Its function is to drive the change of the oil pressure within the driving sleeve 95 through the flow of the hydraulic oil within the driving box 93, so that the driving sleeve 95 slides outside the support rod 82, and then pushes the plurality of driving plates 6 to slide along the back end of the pressing plate 4 to achieve precise pressing, ensuring that the plug body 3 is firmly embedded within the steel pipe body 2.

[0049] The transmission part 10 includes a first sealing plate 101 arranged outside the support rod 82. A first sealing strip 102 is arranged outside the first sealing plate 101. The driving sleeve 95 is slidably arranged outside the first sealing plate 101. A second sealing plate 103 is arranged on the inner wall of the driving sleeve 95, and a second sealing strip 104 is arranged inside the second sealing plate 103. The second sealing plate 103 is slidably arranged outside the support rod 82. The driving hose 94 is located between the first sealing plate 101 and the second sealing plate 103. When the hydraulic oil pressure in the driving sleeve 95 increases, since the first sealing plate 101 is arranged outside the support rod 82, the first sealing plate 101 will not displace. However, the second sealing plate 103 is arranged on the inner wall of the driving sleeve 95. Under the action of the oil pressure, the second sealing plate 103 will slide towards the direction of the circular plate 83, so that the driving sleeve 95 follows the second sealing plate 103 and slides towards the direction of the circular plate 83 together. The first sealing strip 102 and the second sealing strip 104 respectively arranged on the first sealing plate 101 and the second sealing plate 103 will closely adhere to the outside of the support rod 82 to form a double seal, preventing the leakage of hydraulic oil, ensuring the stable movement of the driving sleeve 95. Its function is to effectively improve the stability and reliability of the hydraulic system through the double-sealing structure, ensure that the driving sleeve 95 can still be precisely controlled to slide under high-pressure environment, and then guarantee the accuracy of the extrusion process and the firmness of the plug body 3, and extend the service life of the equipment.

[0050] A correction frame 11 is arranged on the workbench 1. A correction groove 12 is opened at the top of the correction frame 11, and the correction frame 11 has the same axial center height as the circular plate 83. The correction groove 12 is used in cooperation with the steel pipe body 2. The steel pipe body 2 inserted with the plug body 3 is placed between multiple extrusion plates 4, and the position of the steel pipe body 2 is adjusted through the correction groove 12 opened on the correction frame 11, so that the steel pipe body 2 is located at the center point of the correction groove 12, thereby ensuring that the steel pipe body 2 and the circular plate 83 maintain the same axial center. Its function is to improve the positioning accuracy of the steel pipe body 2, reduce the processing error, ensure the uniformity and stability of the extrusion process, and ultimately improve the product quality and production efficiency.

[0051] A guide member 13 is provided on the outer side of the support rod 82. The guide member 13 includes a plurality of guide grooves 131 formed on the outer side of the support rod 82. A guide plate 132 is slidably disposed in each of the plurality of guide grooves 131, and the plurality of guide plates 132 are all disposed at one end of the drive sleeve 95 close to the support plate 81. When the drive sleeve 95 slides on the outer side of the support rod 82, the guide plate 132 disposed on the outer side of the drive sleeve 95 will slide together with the drive sleeve 95. Under the action of the guide groove 131, the guide plate 132 will limit the movement trajectory of the drive sleeve 95 to prevent it from shifting, ensuring that the drive sleeve 95 moves linearly along the support rod 82, further optimizing the accuracy of the extrusion process. Its function is to effectively restrict the movement path of the drive sleeve 95 through the precise cooperation between the guide plate 132 and the guide groove 131, avoiding errors caused by shifting, thereby further enhancing the stability and reliability of the extrusion process, ensuring the processing accuracy of the product, and extending the service life of the equipment.

[0052] During use, when the staff needs to press the plug body 3 at one end of the steel pipe body 2, first insert the plug body 3 into one end of the steel pipe body 2, and then place the steel pipe body 2 with the plug body 3 inserted between multiple pressing plates 4. Adjust the position of the steel pipe body 2 through the correction groove 12 opened on the correction frame 11, so that the steel pipe body 2 is located at the center point of the correction groove 12, thereby ensuring that the steel pipe body 2 and the circular plate 83 are on the same axis. Subsequently, start the first electric push rod 91. The first electric push rod 91 will push the push plate 92 at its output end, and make the push plate 92 slide in the drive box 93, so that the hydraulic oil in the drive box 93 is transmitted to the drive sleeve 95 through the drive hose 94. At this time, the hydraulic oil pressure in the drive sleeve 95 increases. When the hydraulic oil pressure in the drive sleeve 95 becomes larger, since the first sealing plate 101 is arranged outside the support rod 82, the first sealing plate 101 will not displace. And the second sealing plate 103 is arranged on the inner wall of the drive sleeve 95. Under the action of the oil pressure, the second sealing plate 103 will slide towards the circular plate 83 direction, so that the drive sleeve 95 follows the second sealing plate 103 and slides towards the circular plate 83 direction together. The first sealing strip 102 and the second sealing strip 104 respectively arranged on the first sealing plate 101 and the second sealing plate 103 will closely fit on the outside of the support rod 82 to form a double seal, preventing hydraulic oil leakage and ensuring the stable movement of the drive sleeve 95. When the drive sleeve 95 moves, multiple drive plates 6 arranged on the inner wall of the drive sleeve 95 will move together with the drive sleeve 95. Since the drive plates 6 are in contact with the inclined surfaces of the pressing plates 4 and generate a wedge-shaped acting force, it prompts the pressing plates 4 to apply a uniform pressure to the steel pipe body 2, so that the pressing grooves 5 at the relative ends of the multiple pressing plates 4 tightly clamp the steel pipe body 2, ensuring that the plug body 3 is firmly embedded and ensuring the tight combination of the plug body 3 and the steel pipe body 2, thereby effectively preventing the steel pipe body 2 from loosening or falling off during subsequent processing, further improving the stability and durability of the overall structure, and ensuring the safety and reliability of the product during use;

[0053] When the driving sleeve 95 slides outside the support rod 82, the guiding plate 132 arranged outside the driving sleeve 95 will slide together with the driving sleeve 95. Under the action of the guiding groove 131, the guiding plate 132 will limit the moving track of the driving sleeve 95, prevent it from deviating, ensure that the driving sleeve 95 moves linearly along the support rod 82, and further optimize the accuracy of the extrusion process. When the multiple driving plates 6 on the inner wall of the driving sleeve 95 extrude the extrusion plate 4, the extrusion plate 4 will slide inside the circular plate 83 when being extruded. At this time, the limiting plate 84 arranged on one side of the extrusion plate 4 will closely cooperate with the limiting groove in the circular plate 83 to prevent the extrusion plate 4 from moving excessively, thereby ensuring that the extrusion plate 4 operates stably within a predetermined range and maintaining a uniform extrusion force. When the limiting plate 84 moves, the limiting spring 85 arranged at the bottom of the limiting plate 84 will start to compress and store energy. When the driving sleeve 95 retracts, the limiting spring 85 releases the stored energy and pushes the limiting plate 84 to reset, ensuring that the extrusion plate 4 returns to its initial position. After the extrusion and fixation of the steel pipe body 2 are completed, the first electric push rod 91 is started to reset, the hydraulic oil in the driving box 93 flows back, the pressure inside the driving sleeve 95 decreases, and the second sealing plate 103 resets under the action of the pressure, so that the multiple extrusion plates 4 gradually loosen the steel pipe body 2, and the driving sleeve 95 and each component return to their initial states in turn, ensuring that the entire device can be reused and improving work efficiency.

[0054] Embodiment 2: Please refer to Figures 10-16 , the present invention provides a technical solution: A steel pipe plug pressing and connecting device, including a workbench 1, a steel pipe body 2 and a plug body 3, further including:

[0055] Extrusion plates 4, multiple extrusion plates 4 are provided, and the multiple extrusion plates 4 are all arranged above the workbench 1, and are used to extrude the steel pipe body 2, drive the plug body 3 to be embedded in one end of the steel pipe body 2. The opposite ends of the multiple extrusion plates 4 are all inclined surfaces, and the opposite ends of the multiple extrusion plates 4 are all provided with extrusion grooves 5, and the multiple extrusion grooves 5 are all used in cooperation with the plug body 3 and one end of the steel pipe body 2;

[0056] Driving plates 6, multiple driving plates 6 are provided, and the multiple driving plates 6 are respectively attached to the opposite ends of the corresponding extrusion plates 4 and are slidably arranged at one end of the inclined surface thereof;

[0057] A pressing assembly 7, arranged above the workbench 1, uses the pressing assembly 7 to drive the multiple driving plates 6 to slide on the opposite ends of the corresponding extrusion plates 4 and extrude the inclined surfaces of the multiple extrusion plates 4, drive the multiple extrusion plates 4 to extrude one end of the steel pipe body 2, so that the plug body 3 is embedded in the steel pipe body 2.

[0058] The pressing assembly 7 includes a support member 8 disposed above the workbench 1 for supporting the positions of a plurality of pressing plates 4. Above the workbench 1, a driving member 9 is provided. Using the driving member 9 to generate power, a plurality of driving plates 6 are driven to slide on the opposite ends of the corresponding pressing plates 4. Above the workbench 1, a transmission member 10 is provided. Using the transmission member 10 to transmit the power generated by the driving member 9, a plurality of driving plates 6 are driven to slide outside the plurality of pressing plates 4.

[0059] The support member 8 includes a support plate 81 disposed on the workbench 1. On the support plate 81, a support rod 82 is fixedly provided by bolts. At the end of the support rod 82 away from the support plate 81, a circular plate 83 is provided. A plurality of pressing plates 4 are all slidably disposed within the circular plate 83, and the plurality of pressing plates 4 are arranged in an annular equidistant manner centered on the axis of the circular plate 83. A plurality of limiting plates 84 are slidably disposed within the circular plate 83, and limiting springs 85 are provided at the bottoms of the plurality of limiting plates 84. The other ends of the plurality of limiting springs 85 are all disposed within the circular plate 83. One ends of the plurality of limiting plates 84 are all disposed on one side of the corresponding pressing plate 4. When the plurality of driving plates 6 on the inner wall of the driving sleeve 95 press the pressing plate 4, the pressing plate 4 will slide within the circular plate 83 when being pressed. At this time, the limiting plate 84 disposed on one side of the pressing plate 4 will closely cooperate with the limiting groove within the circular plate 83 to prevent the pressing plate 4 from moving excessively, thereby ensuring that the pressing plate 4 operates stably within a predetermined range and maintaining a uniform pressing force. When the limiting plate 84 moves, the limiting spring 85 disposed at the bottom of the limiting plate 84 will start to compress and store energy. When the driving sleeve 95 retracts, the limiting spring 85 releases the stored energy and pushes the limiting plate 84 to reset, ensuring that the pressing plate 4 returns to its initial position. Its function is to ensure the tight combination of the plug body 3 and the steel pipe body 2 by precisely controlling the moving range and force of the pressing plate 4, and to improve the stability and sealing performance of the overall structure.

[0060] The driving member 9 includes a first electric push rod 91 disposed at the bottom of the workbench 1. A push plate 92 is provided at the output end of the first electric push rod 91. A driving box 93 for storing hydraulic oil is arranged at the bottom of the workbench 1. The push plate 92 is slidably disposed within the driving box 93. A plurality of driving hoses 94 for transmitting hydraulic oil are provided at one end of the driving box 93 away from the first electric push rod 91. One ends of the plurality of driving hoses 94 away from the driving box 93 are provided with a driving sleeve 95. The driving sleeve 95 is slidably disposed outside the support rod 82, and a plurality of driving plates 6 are all arranged on the inner wall of the driving sleeve 95. The driving hoses 94 communicate with the driving sleeve 95. When the first electric push rod 91 is started, the first electric push rod 91 will push the push plate 92 at its output end and cause the push plate 92 to slide within the driving box 93, so that the hydraulic oil in the driving box 93 is transmitted to the driving sleeve 95 through the driving hoses 94. Its function is that through the flow of the hydraulic oil in the driving box 93, the oil pressure within the driving sleeve 95 is affected and thus changes, causing the driving sleeve 95 to slide outside the support rod 82, and then pushing the plurality of driving plates 6 to slide along the back end of the pressing plate 4, achieving precise extrusion and ensuring that the plug body 3 is firmly embedded within the steel pipe body 2.

[0061] The transmission member 10 includes a first sealing plate 101 disposed outside the support rod 82. A first sealing strip 102 is provided outside the first sealing plate 101. The driving sleeve 95 is slidably disposed outside the first sealing plate 101. A second sealing plate 103 is arranged on the inner wall of the driving sleeve 95, and a second sealing strip 104 is provided within the second sealing plate 103. The second sealing plate 103 is slidably disposed outside the support rod 82. The driving hoses 94 are located between the first sealing plate 101 and the second sealing plate 103. When the hydraulic oil pressure within the driving sleeve 95 increases, since the first sealing plate 101 is disposed outside the support rod 82, the first sealing plate 101 will not displace. However, the second sealing plate 103 is arranged on the inner wall of the driving sleeve 95, and under the action of the oil pressure, the second sealing plate 103 will slide towards the direction of the circular plate 83, so that the driving sleeve 95 follows the second sealing plate 103 and slides towards the direction of the circular plate 83 together. The first sealing strip 102 and the second sealing strip 104 respectively arranged on the first sealing plate 101 and the second sealing plate 103 will closely adhere to the outside of the support rod 82 to form a double seal, preventing hydraulic oil leakage and ensuring the stable movement of the driving sleeve 95. Its function is that through the double-sealing structure, the stability and reliability of the hydraulic system are effectively improved, ensuring that the sliding of the driving sleeve 95 can still be precisely controlled under a high-pressure environment, and further guaranteeing the accuracy of the extrusion process and the firmness of the plug body 3, and extending the service life of the equipment.

[0062] A guiding member 13 is provided on the outer side of the support rod 82. The guiding member 13 includes a plurality of guiding grooves 131 formed on the outer side of the support rod 82. A guiding plate 132 is slidably disposed in each of the plurality of guiding grooves 131, and the plurality of guiding plates 132 are all disposed at one end of the driving sleeve 95 close to the support plate 81. When the driving sleeve 95 slides on the outer side of the support rod 82, the guiding plate 132 disposed on the outer side of the driving sleeve 95 will slide together with the driving sleeve 95. Under the action of the guiding groove 131, the guiding plate 132 will limit the movement track of the driving sleeve 95 to prevent it from shifting, ensuring that the driving sleeve 95 moves linearly along the support rod 82, further optimizing the accuracy of the extrusion process. Its function is to effectively restrict the movement path of the driving sleeve 95 through the precise cooperation between the guiding plate 132 and the guiding groove 131, avoid errors caused by shifting, thereby further improving the stability and reliability of the extrusion process, ensuring the processing accuracy of the product, and extending the service life of the equipment.

[0063] A conveyor belt 14 for transporting the steel pipe body 2 is provided at the bottom of the workbench 1. An intermittent feeding assembly 15 is provided above the workbench 1. The intermittent feeding assembly 15 is used to drive the transportation of the steel pipe body 2 and the plug body 3. A blanking plate 16 is provided at the top of the workbench 1, and one end of the blanking plate 16 close to the steel pipe body 2 is in a slope shape;

[0064] The intermittent feeding assembly 15 includes a clamping member 17 provided on the workbench 1. The clamping member 17 is used to clamp and transport the steel pipe body 2 above the conveyor belt 14, driving the steel pipe body 2 to be concentric with the circular plate 83. A pushing and pulling member 18 is provided on the workbench 1. The pushing and pulling member 18 is used to drive the steel pipe body 2 concentric with the circular plate 83 into the plurality of pressing plates 4.

[0065] The clamping member 17 includes a clamping shaft 171 rotatably arranged on the workbench 1. A clamping plate 172 is arranged on the outer side of the clamping shaft 171. A plurality of clamping brackets 173 are arranged on the outer side of the clamping plate 172. Arc-shaped plates 174 are arranged at one ends of the plurality of clamping brackets 173 away from the clamping plate 172. A plurality of ball bearings 175 are rotatably arranged in each of the plurality of arc-shaped plates 174. Clamping magnets 176 used in cooperation with the steel pipe body 2 are arranged at the recesses of the plurality of arc-shaped plates 174. When the second sliding rod 189 slides in the first sliding groove 185 and the second sliding groove 186, the push-pull wheel 184 will not rotate and remains stationary, ensuring that the pressing process of the steel pipe body 2 and the plug body 3 is not interfered. When the second sliding rod 189 slides reversely and reaches between the second sliding groove 186 and the third sliding groove 187, the steel pipe body 2 that has completed pressing will disengage from between the plurality of pressing plates 4. When the second sliding rod 189 slides along the third sliding groove 187, the push-pull wheel 184 will rotate as the second sliding rod 189 moves. When the push-pull wheel 184 rotates, the push-pull wheel 184 will drive the clamping shaft 171 at its axis to rotate together. When the clamping shaft 171 rotates, the clamping plate 172 on the outer side of the clamping shaft 171 will rotate together with it. The clamping brackets 173 arranged on the outer side of the clamping plate 172 will rotate together with the clamping plate 172 and drive the arc-shaped plates 174 at one ends of them to rotate together. In this process, the steel pipe body 2 that has been adsorbed by the clamping magnet 176 and has completed pressing will also rotate accordingly, and gradually move out of the adsorption range of the push-pull magnet 183 during its gradual rotation, and finally realize the complete separation of the steel pipe body 2 and the clamping magnet 176. As the arc-shaped plate 174 continues to rotate, the steel pipe body 2 that has completed pressing will contact the blanking plate 16, and will disengage from the adsorption of the clamping magnet 176 under the extrusion of the blanking plate 16 and smoothly slide onto the blanking plate 16;

[0066] Meanwhile, the clamping brackets located below will gradually approach the closest un-pressed steel pipe body 2 on the conveyor belt 14 while driving the arc-shaped plates 174 to rotate, and under the action of the clamping magnet 176, adsorb the steel pipe body 2 onto the arc-shaped plates 174, making it fit with the plurality of ball bearings 175. With the reciprocating continuous operation of the second electric push rod 181, the plurality of arc-shaped plates 174 will sequentially adsorb and transfer the un-pressed steel pipe bodies 2 to the pressing area one by one, and send out the steel pipe bodies 2 that have been pressed one by one, ensuring the high efficiency and precision of the whole process. The plurality of ball bearings 175 arranged on the arc-shaped plates 174 can provide a smooth transition when the push-pull plate pushes the steel pipe body 2 into and out of between the plurality of pressing plates 4, reduce the frictional resistance, and ensure the stability of the steel pipe body 2 during the pressing process. Its function is to improve the working efficiency and pressing accuracy of the whole pressing process, and at the same time ensure the continuity and reliability of the production process.

[0067] The push-pull member 18 includes a second electric push rod 181 disposed on the workbench 1. The second electric push rod 181 and the circular plate 83 are located on the same axis. A push-pull rod 182 is disposed at the output end of the second electric push rod 181. A push-pull magnet 183 that cooperates with the steel pipe body 2 is disposed at one end of the push-pull rod 182 away from the second electric push rod 181.

[0068] A push-pull wheel 184 is disposed outside the clamping shaft 171. A plurality of first sliding grooves 185 are formed on the outside of the push-pull wheel 184. A second sliding groove 186 is disposed on one side of the plurality of first sliding grooves 185 close to the clamping plate 172. The plurality of second sliding grooves 186 communicate with the plurality of first sliding grooves 185. The plurality of second sliding grooves 186 are closer to the axis of the push-pull wheel 184 than the first sliding grooves 185. A plurality of third sliding grooves 187 are formed on the outside of the push-pull wheel 184. One end of the third sliding groove 187 communicates with one end of the second sliding groove 186 close to the first sliding groove 185, and the other end extends to the outside of another first sliding groove 185 and communicates with the end of the first sliding groove 185 away from the second sliding groove 186. The third sliding groove 187 is in a slope shape. The end that communicates with the second sliding groove 186 is at the same height as the second sliding groove 186, and the end that communicates with the first sliding groove 185 is flush with the bottom of the first sliding groove 185, presenting an overall slope shape.

[0069] A first sliding rod 188 is provided at the bottom of the push-pull rod 182. A second sliding rod 189 is slidably arranged within the first sliding rod 188. A telescopic spring 1810 is provided at the top of the second sliding rod 189. The top of the telescopic spring 1810 is arranged within the first sliding rod 188. The bottom of the second sliding rod 189 is slidably arranged within the first sliding groove 185. And the second sliding groove 186 cooperates with the first sliding groove 185, the second sliding groove 186, and the third sliding groove 187. When the second electric push rod 181 is started, the second electric push rod 181 will push the push-pull rod 182, causing the push-pull magnet 183 to adsorb one end of the steel pipe body 2 away from the plug body 3. As the second electric push rod 181 continues to push the push-pull rod 182, the steel pipe body 2 gradually enters between the plurality of pressing plates 4. When the push-pull rod 182 is pushed by the second electric push rod 181, the first sliding rod 188 provided at the bottom of the push-pull rod 182 will drive the second sliding rod 189 to slide within the first sliding groove 185. As the push-pull rod 182 continues to move, the second sliding rod 189 will enter the second sliding groove 186. Since the second sliding groove 186 is closer to the axis of the push-pull wheel 184 than the first sliding groove 185, the height of the second sliding groove 186 is lower than that of the first sliding groove 185. When the second sliding rod 189 enters the second sliding groove 186, the telescopic spring 1810 will push the second sliding rod 189, causing the bottom end of the second sliding rod 189 to fit with the bottom of the second sliding groove 186 and continue to slide along the second sliding groove 186 until the second sliding rod 189 reaches the end of the second sliding groove 186 away from the first sliding groove 185. At this time, the end of the steel pipe body 2 with the plug body 3 will reach between the plurality of pressing plates 4 and wait for clamping. Then, the first electric push rod 91 is started, causing the plurality of pressing plates 4 to tightly clamp the steel pipe body 2. After the clamping between the steel pipe body 2 and the plug body 3 is completed, the second electric push rod 181 is started to reset, driving the push-pull rod 182 to reset, causing the second sliding rod 189 to slide in the second sliding groove 186 in the reverse direction. Since the height of the first sliding groove 185 is higher than that of the second sliding groove 186, the second sliding rod 189 cannot return to the initial first sliding groove 185 again and can only slide along the ramp-like structure of the third sliding groove 187 into another first sliding groove 185 communicating with the third sliding groove 187. When the second sliding rod 189 slides along the third sliding groove 187, the telescopic spring 1810 is gradually compressed, providing a stable resistance to ensure smooth sliding and facilitating the smooth transition of the second sliding rod 189 from the first sliding groove 185 to the second sliding groove 186 during the next operation, realizing cyclic and precise positioning and clamping. When the second sliding rod 189 enters another first sliding groove 185 through the third sliding groove 187, the push-pull wheel 184 rotates under the extrusion of the second sliding rod 189 and the third sliding rod. Its function is to, through the cooperation between the first sliding groove 185, the second sliding groove 186, the third sliding groove 187 and the second sliding rod 189,Make the crimping process of the steel pipe body 2 and the plug body 3 more precise and efficient, reduce the operation process of the staff, reduce human error, improve the overall work efficiency, ensure the consistency and stability of each crimping, extend the service life of the equipment, and optimize the production process.

[0070] When in use, when the staff needs to crimp the plug body 3 at one end of the steel pipe body 2, first start the second electric push rod 181. The second electric push rod 181 will push the push-pull rod 182, so that the push-pull magnet 183 adsorbs one end of the steel pipe body 2 away from the plug body 3. As the second electric push rod 181 continues to push the push-pull rod 182, the steel pipe body 2 gradually enters between the plurality of pressing plates 4. When the push-pull rod 182 is pushed by the second electric push rod 181, the first sliding rod 188 provided at the bottom of the push-pull rod 182 will drive the second sliding rod 189 to slide in the first sliding groove 185. As the push-pull rod 182 continues to move, the second sliding rod 189 will enter the second sliding groove 186. Since the second sliding groove 186 is closer to the axis of the push-pull wheel 184 than the first sliding groove 185, the height of the second sliding groove 186 is lower than that of the first sliding groove 185. When the second sliding rod 189 enters the second sliding groove 186, the telescopic spring 1810 will push the second sliding rod 189, so that the bottom end of the second sliding rod 189 fits with the bottom of the second sliding groove 186 and continues to slide along the second sliding groove 186 until the second sliding rod 189 reaches the end of the second sliding groove 186 away from the first sliding groove 185. At this time, the end of the steel pipe body 2 with the plug body 3 will reach between the plurality of pressing plates 4 and wait for crimping. Then start the first electric push rod 91 to tightly crimp the steel pipe body 2 by the plurality of pressing plates 4. After the crimping between the steel pipe body 2 and the plug body 3 is completed, start the second electric push rod 181 to reset, drive the push-pull rod 182 to reset, so that the second sliding rod 189 slides in the second sliding groove 186 in the opposite direction. Since the height of the first sliding groove 185 is higher than that of the second sliding groove 186, the second sliding rod 189 cannot return to the initial first sliding groove 185 again and can only slide along the ramp-shaped structure of the third sliding groove 187 into another first sliding groove 185 communicated with the third sliding groove 187. When the second sliding rod 189 slides along the third sliding groove 187, the telescopic spring 1810 is gradually compressed to provide a stable resistance, ensuring smooth sliding and facilitating the second sliding rod 189 to smoothly transition from the first sliding groove 185 to the second sliding groove 186 during the next operation, realizing cyclic and precise positioning and crimping. When the second sliding rod 189 enters another first sliding groove 185 through the third sliding groove 187, the push-pull wheel 184 rotates under the extrusion of the second sliding rod 189 in cooperation with the third sliding rod;

[0071] When the second sliding rod 189 slides within the first sliding groove 185 and the second sliding groove 186, the push-pull wheel 184 will not rotate and remains stationary, ensuring that the crimping process of the steel pipe body 2 and the plug body 3 is not interfered with. When the second sliding rod 189 slides in the reverse direction and reaches between the second sliding groove 186 and the third sliding groove 187, the crimped steel pipe body 2 will separate from between the plurality of pressing plates 4. When the second sliding rod 189 slides along the third sliding groove 187, the push-pull wheel 184 will rotate as the second sliding rod 189 moves. When the push-pull wheel 184 rotates, the push-pull wheel 184 will drive the clamping shaft 171 at its axis to rotate together. When the clamping shaft 171 rotates, the clamping plate 172 outside the clamping shaft 171 will rotate together with it, and the clamping bracket 173 provided outside the clamping plate 172 will rotate together with the clamping plate 172 and drive the arc plate 174 at one end of it to rotate together. During this process, the steel pipe body 2 that has been crimped and adsorbed by the clamping magnet 176 will also rotate accordingly, and gradually move out of the adsorption range of the push-pull magnet 183 during its gradual rotation, ultimately achieving the complete separation of the steel pipe body 2 from the clamping magnet 176. As the arc plate 174 continues to rotate, the crimped steel pipe body 2 will come into contact with the blanking plate 16, and under the extrusion of the blanking plate 16, it will break away from the adsorption of the clamping magnet 176 and smoothly slide onto the blanking plate 16;

[0072] Meanwhile, the clamping bracket located below will gradually approach the nearest uncrimped steel pipe body 2 on the conveyor belt 14 while driving the arc plate 174 to rotate, and under the action of the clamping magnet 176, adsorb the steel pipe body 2 onto the arc plate 174, making it fit with the plurality of ball bearings 175. With the continuous reciprocating operation of the second electric push rod 181, the plurality of arc plates 174 will sequentially adsorb and transfer the uncrimped steel pipe bodies 2 to the extrusion area one by one, and send out the crimped steel pipe bodies 2 one by one, ensuring the high efficiency and precision of the entire process. The plurality of ball bearings 175 provided on the arc plate 174 can provide a smooth transition when the push-pull plate pushes the steel pipe body 2 into and out of between the plurality of pressing plates 4, reducing the frictional resistance and ensuring the stability of the steel pipe body 2 during the crimping process;

[0073] When the steel pipe body 2 with the plug body 3 enters between multiple pressing plates 4, the first electric push rod 91 is started. The first electric push rod 91 will push the push plate 92 at its output end and make the push plate 92 slide in the drive box 93, so that the hydraulic oil in the drive box 93 is transmitted to the drive sleeve 95 through the drive hose 94. At this time, the hydraulic oil pressure in the drive sleeve 95 increases. When the hydraulic oil pressure in the drive sleeve 95 becomes larger, since the first sealing plate 101 is arranged outside the support rod 82, the first sealing plate 101 will not generate displacement. And the second sealing plate 103 is arranged on the inner wall of the drive sleeve 95. Under the action of the oil pressure, the second sealing plate 103 will slide towards the circular plate 83, so that the drive sleeve 95 follows the second sealing plate 103 and slides towards the circular plate 83 together. The first sealing strip 102 and the second sealing strip 104 respectively arranged on the first sealing plate 101 and the second sealing plate 103 will closely fit on the outside of the support rod 82 to form a double seal, prevent the leakage of hydraulic oil, and ensure the stable movement of the drive sleeve 95. When the drive sleeve 95 moves, the multiple drive plates 6 arranged on the inner wall of the drive sleeve 95 will move together with the drive sleeve 95. Since the drive plates 6 are in contact with the inclined surfaces of the pressing plates 4 and generate a wedge-shaped acting force, the pressing plates 4 are urged to apply a uniform pressure to the steel pipe body 2, so that the pressing grooves 5 at the relative ends of the multiple pressing plates 4 tightly clamp the steel pipe body 2, ensure that the plug body 3 is firmly embedded, ensure the tight combination of the plug body 3 and the steel pipe body 2, thus effectively preventing the steel pipe body 2 from loosening or falling off during subsequent processing, further improving the stability and durability of the overall structure, and ensuring the safety and reliability of the product during use;

[0074] When the drive sleeve 95 slides outside the support rod 82, the guide plate 132 provided on the outside of the drive sleeve 95 will slide together with the drive sleeve 95. Under the action of the guide groove 131, the guide plate 132 will limit the movement trajectory of the drive sleeve 95, prevent it from deviating, ensure that the drive sleeve 95 moves linearly along the support rod 82, and further optimize the accuracy of the extrusion process. When the multiple drive plates 6 on the inner wall of the drive sleeve 95 extrude the extrusion plate 4, the extrusion plate 4 will slide inside the circular plate 83 when being extruded. At this time, the limiting plate 84 provided on one side of the extrusion plate 4 will closely cooperate with the limiting groove in the circular plate 83 to prevent the extrusion plate 4 from moving excessively, so as to ensure that the extrusion plate 4 operates stably within a predetermined range and maintains a uniform extrusion force. When the limiting plate 84 moves, the limiting spring 85 provided at the bottom of the limiting plate 84 will start to compress and store energy. When the drive sleeve 95 retracts, the limiting spring 85 releases the stored energy and pushes the limiting plate 84 to reset, ensuring that the extrusion plate 4 returns to its initial position. After the extrusion and fixation of the steel pipe body 2 are completed, the first electric push rod 91 is started to reset, the hydraulic oil in the drive box 93 flows back, the pressure inside the drive sleeve 95 decreases, and the second sealing plate 103 resets under the action of the pressure, so that the multiple extrusion plates 4 gradually loosen the steel pipe body 2, and the drive sleeve 95 and each component return to their initial states in turn, ensuring that the entire device can be reused and improving work efficiency.

[0075] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0076] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A pressing and connecting device for a steel pipe plug, comprising a workbench (1), a steel pipe body (2) and a plug body (3), characterized in that: It further includes: A plurality of extrusion plates (4) are provided, and the plurality of extrusion plates (4) are all arranged above the workbench (1) and are used for extruding the steel pipe body (2) to drive the plug body (3) to be embedded in one end of the steel pipe body (2). The opposite ends of the plurality of extrusion plates (4) are inclined surfaces, and the opposite ends of the plurality of extrusion plates (4) are respectively provided with extrusion grooves (5), and the plurality of extrusion grooves (5) are all used in cooperation with the plug body (3) and one end of the steel pipe body (2). A plurality of driving plates (6) are provided, and the plurality of driving plates (6) are respectively attached to the opposite ends of the corresponding extrusion plates (4) and are slidably arranged at one end of the inclined surface thereof. A pressing assembly (7) is arranged above the workbench (1). The pressing assembly (7) is used to drive the plurality of driving plates (6) to slide on the opposite ends of the corresponding extrusion plates (4) and press the inclined surfaces of the plurality of extrusion plates (4), so as to drive the plurality of extrusion plates (4) to extrude one end of the steel pipe body (2), thereby embedding the plug body (3) into the steel pipe body (2).

2. The steel pipe plug pressing connection device according to claim 1, wherein: The pressing assembly (7) includes a support member (8) arranged above the workbench (1) for supporting the positions of the plurality of extrusion plates (4). A driving member (9) is arranged above the workbench (1). The driving member (9) generates power to drive the plurality of driving plates (6) to slide on the opposite ends of the corresponding extrusion plates (4). A transmission member (10) is arranged above the workbench (1). The transmission member (10) transmits the power generated by the driving member (9) to drive the plurality of driving plates (6) to slide outside the plurality of extrusion plates (4).

3. The steel pipe plug pressing and connecting device according to claim 2, wherein: The support member (8) includes a support plate (81) arranged on the workbench (1). A support rod (82) is fixedly arranged on the support plate (81) through bolts. A circular plate (83) is arranged at one end of the support rod (82) away from the support plate (81). The plurality of extrusion plates (4) are all slidably arranged in the circular plate (83), and the plurality of extrusion plates (4) are arranged in an annular equidistant manner centered on the axis of the circular plate (83). A plurality of limiting plates (84) are slidably arranged in the circular plate (83), and limiting springs (85) are arranged at the bottoms of the plurality of limiting plates (84). The other ends of the plurality of limiting springs (85) are arranged in the circular plate (83), and one ends of the plurality of limiting plates (84) are arranged on one side of the corresponding extrusion plate (4).

4. The steel pipe plug pressing connection device according to claim 3, characterized in that: The driving member (9) includes a first electric push rod (91) arranged at the bottom of the workbench (1). A push plate (92) is arranged at the output end of the first electric push rod (91). A driving box (93) for storing hydraulic oil is arranged at the bottom of the workbench (1). The push plate (92) is slidably arranged in the driving box (93). A plurality of driving hoses (94) for transmitting hydraulic oil are arranged at one end of the driving box (93) away from the first electric push rod (91). One ends of the plurality of driving hoses (94) away from the driving box (93) are provided with a driving sleeve (95). The driving sleeve (95) is slidably arranged on the outer side of the support rod (82). And a plurality of driving plates (6) are all arranged on the inner wall of the driving sleeve (95). The driving hoses (94) communicate with the driving sleeve (95).

5. The steel pipe plug press-fit connection device according to claim 4, characterized in that: The transmission member (10) includes a first sealing plate (101) arranged on the outer side of the support rod (82). A first sealing strip (102) is arranged on the outer side of the first sealing plate (101). The driving sleeve (95) is slidably arranged on the outer side of the first sealing plate (101). A second sealing plate (103) is arranged on the inner wall of the driving sleeve (95). And a second sealing strip (104) is arranged in the second sealing plate (103). The second sealing plate (103) is slidably arranged on the outer side of the support rod (82). The driving hoses (94) are located between the first sealing plate (101) and the second sealing plate (103).

6. The steel pipe plug pressing connection device according to claim 1, characterized in that: A correction frame (11) is arranged on the workbench (1). A correction groove (12) is opened at the top of the correction frame (11). And the correction frame (11) has the same axial center height as the circular plate (83). The correction groove (12) is used in cooperation with the steel pipe body (2).

7. The steel pipe plug pressing connection device according to claim 3, wherein: A guiding member (13) is arranged on the outer side of the support rod (82). The guiding member (13) includes a plurality of guiding grooves (131) opened on the outer side of the support rod (82). A guiding plate (132) is slidably arranged in each of the plurality of guiding grooves (131). And a plurality of guiding plates (132) are all arranged at one end of the driving sleeve (95) close to the support plate (81).

8. The steel pipe plug pressing and connecting device according to claim 1, characterized in that: A conveyor belt (14) for transmitting the steel pipe body (2) is arranged at the bottom of the workbench (1). An intermittent feeding assembly (15) is arranged above the workbench (1). The intermittent feeding assembly (15) is used to drive the steel pipe body (2) and the plug body (3) for conveying. A blanking plate (16) is arranged at the top of the workbench (1). And one end of the blanking plate (16) close to the steel pipe body (2) is in a slope shape; The intermittent feeding assembly (15) includes a clamping member (17) disposed on the workbench (1). The clamping member (17) is used to clamp and convey the steel pipe body (2) above the conveyor belt (14), and drive the steel pipe body (2) to be coaxial with the circular plate (83). A pushing and pulling member (18) is disposed on the workbench (1), and the pushing and pulling member (18) is used to drive the steel pipe body (2) that is coaxial with the circular plate (83) into the space between multiple pressing plates (4).

9. The steel pipe plug pressing connection device according to claim 8, characterized in that: The clamping member (17) includes a clamping shaft (171) rotatably disposed on the workbench (1). A clamping plate (172) is disposed on the outer side of the clamping shaft (171). Multiple clamping brackets (173) are disposed on the outer side of the clamping plate (172). Arc-shaped plates (174) are disposed at one ends of the multiple clamping brackets (173) away from the clamping plate (172). Multiple balls (175) are rotatably disposed in each of the multiple arc-shaped plates (174). Clamping magnets (176) that cooperate with the steel pipe body (2) are disposed at the recesses of the multiple arc-shaped plates (174).

10. The steel pipe plug pressing connection device according to claim 9, characterized in that: The pushing and pulling member (18) includes a second electric push rod (181) disposed on the workbench (1). The second electric push rod (181) and the circular plate (83) are coaxial. A push rod (182) is disposed at the output end of the second electric push rod (181). A pushing and pulling magnet (183) that cooperates with the steel pipe body (2) is disposed at one end of the push rod (182) away from the second electric push rod (181). A pushing and pulling wheel (184) is disposed on the outer side of the clamping shaft (171). Multiple first sliding grooves (185) are formed on the outer side of the pushing and pulling wheel (184). A second sliding groove (186) is disposed on one side of the multiple first sliding grooves (185) close to the clamping plate (172), and the multiple second sliding grooves (186) communicate with the multiple first sliding grooves (185). The multiple second sliding grooves (186) are closer to the axis of the pushing and pulling wheel (184) than the first sliding grooves (185). Multiple third sliding grooves (187) are formed on the outer side of the pushing and pulling wheel (184). One end of the third sliding groove (187) communicates with one end of the second sliding groove (186) close to the first sliding groove (185), and the other end thereof extends to the outside of another first sliding groove (185) and communicates with the end of the first sliding groove (185) away from the second sliding groove (186). The third sliding groove (187) is in a slope shape, and the end thereof communicating with the second sliding groove (186) is at the same height as the second sliding groove (186), and the end communicating with the first sliding groove (185) is flush with the bottom of the first sliding groove (185), presenting an overall slope shape. A first sliding rod (188) is provided at the bottom of the push rod (182). A second sliding rod (189) is slidably arranged within the first sliding rod (188). A telescopic spring (1810) is provided at the top of the second sliding rod (189). The top of the telescopic spring (1810) is arranged within the first sliding rod (188). The bottom of the second sliding rod (189) is slidably arranged within the first sliding groove (185), and the second sliding rod (189) is used in cooperation with the first sliding groove (185), the second sliding groove (186), and the third sliding groove (187).

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