Surfacing method and surfacing device for repairing seamless steel tube hot-rolled core rod

Abstract

The surfacing welding device comprises a machine base, a control box is fixedly connected to the top of the machine base, a clamping base is rotationally connected to the outer surface of the control box, and the surfacing welding device further comprises an auxiliary assembly fixedly connected to the top of the control box; the welding device comprises a machine base, a screw rod rotationally connected to the top of the machine base, a displacement base is rotationally connected to the outer surface of the screw rod, a mounting assembly is rotationally connected to the top of the displacement base, and a welding device is fixedly connected to the outer surface of the mounting assembly. According to the surfacing welding method and surfacing welding device for repairing the seamless steel pipe hot-rolled core rod, the surfacing welding position is adjusted along with movement of the displacement seat, the surfacing welding position is conveniently adjusted during surfacing welding of the core rod, and missing of the core rod in the surfacing welding process is prevented; and it is ensured that the core rod is stable during surfacing when the three welders conduct surfacing on the core rod.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to a surfacing welding method and a surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe. Background Art

[0002] As an economical and fast process for modifying the surface of materials, cladding welding uses electric welding or gas welding to melt metal and clad it on tools or machine parts. It is usually used to repair worn and cracked parts. Most of the existing mandrels are disposable. When the diameter is reduced or cracks, scratches and other defects appear on the surface during use, they are directly scrapped after being taken offline, resulting in a waste of materials and working hours. The existing mandrel repair in the industry is just a simple repair welding operation. There are no clear specifications and requirements for the materials, processes and post-processing used for repair, resulting in the service life of the repaired mandrel failing to meet the expected effect. However, it is easy for the equipment to miss something when repairing the mandrel, thereby reducing the repair effect of the equipment on the mandrel, so that the mandrel needs to be repaired twice after repair, and it is not easy to adjust and replace the repair parts during the repair process. When repairing the mandrel, the mandrel needs to be disassembled and replaced to replace the position of the mandrel cladding, which increases the difficulty of cladding the mandrel. In addition, it is not easy to collect the fallen welding slag during the cladding process of the equipment, so that the welding slag accumulates and affects the movement of the equipment.

[0003] In summary, it is easy for the equipment to miss something when repairing the mandrel, which reduces the repair effect of the equipment on the mandrel, so that the mandrel needs to be repaired again after repair, and it is not easy to adjust and replace the repair parts during the repair process, so that the mandrel needs to be disassembled and replaced when repairing the mandrel and the position of the mandrel welding needs to be changed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems by adopting the following technical solutions: a surfacing device for repairing a hot-rolled mandrel of a seamless steel pipe according to the present invention comprises a machine base, a control box is fixedly connected to the top of the machine base, a groove is provided below the position of the mandrel surfacing of the clamping seat through the machine base, the outer surface of the control box is rotatably connected to the clamping seat, and further comprises: An auxiliary component, which is fixedly connected to the top of the control box and is used for purifying the air during the surfacing work; A screw rod, which is rotatably connected to the top of the machine base, and is used to adjust the position of the surfacing. A driving motor is fixedly connected to one end of the screw rod, and a displacement seat is rotatably connected to the outer surface of the screw rod. A mounting assembly is rotatably connected to the top of the displacement seat, and a welder is fixedly connected to the outer surface of the mounting assembly. Three welders are arranged on the mounting assembly, and the welders are distributed in a circular shape on the mounting assembly. A collecting assembly, which is fixedly connected to the bottom of the inner cavity of the base, and is used to collect welding slag dropped by the welder during surfacing welding, and is located below the mandrel surfacing position through the collecting assembly; The mounting assembly includes a mounting cylinder, which is rotatably connected to the top of the displacement seat, and a rotating motor is fixedly connected through the bottom of the mounting cylinder, and the outer surface of the rotating motor is fixedly connected to the displacement seat. The mounting cylinder is used to adjust the position of the welder, and a fixing block is fixedly connected to the top of the mounting cylinder, and a blocking sleeve is fixedly connected to the bottom of the inner cavity of the mounting cylinder; An air supply tube is fixedly connected to the top of the inner cavity of the mounting tube, and is used to blow the core rod after the surfacing welding. The outer surface of the air supply tube is fixedly connected with a side support plate, which is distributed in a circular shape on the air supply tube through the side support plate. The air supply tube is connected to an air duct at a position away from the side support plate, and three air ducts are arranged on the air supply tube through the air duct, and the air ducts are distributed in a circular shape on the air supply tube.

[0005] Preferably, the side support plate is fixedly connected to the mounting tube at a position away from the air supply tube, and the bottom end of the fixing block is fixedly connected to the air supply tube.

[0006] Preferably, the bottom of the displacement seat is slidably connected to the machine base, and the outer surface of the welder passes through the mounting tube.

[0007] Preferably, the side of the clamping seat away from the mounting tube passes through the control box and extends to the inside of the control box, and the bottom of the auxiliary component passes through the control box and extends to the inside of the control box.

[0008] Preferably, a middle solid plate is fixedly connected to the inner surface of the barrier sleeve, and a side connection block is fixedly connected to the top of the middle solid plate; A pressing plate is fixedly connected to the middle solid plate near the side connecting block. Two pressing plates are arranged on the middle solid plate through the pressing plates and the side connecting blocks, and the two pressing plates are installed relative to each other, and the two side connecting blocks are installed relative to each other. The top of the pressing plate is fixedly connected to a supporting frame, and the top of the supporting frame is fixedly connected to a connecting plate. The top of the connecting plate is slidably connected to the air supply tube.

[0009] Preferably, the top of the connecting plate extends to the outside of the blocking sleeve, and the bottom of the supporting frame is slidably connected to the side connecting block.

[0010] Preferably, the auxiliary component comprises a bracket, the bracket is fixedly connected to the top of the control box, a blocking ring is fixedly connected to the top of the bracket, and a purification cartridge is slidably connected to the inner surface of the blocking ring; An auxiliary block is fixedly connected to the inner surface of the bracket, a buffer block is fixedly connected to the top of the auxiliary block, a spring is provided between the buffer block and the auxiliary block, two ends of the spring are respectively fixedly connected to the buffer block and the auxiliary block, the auxiliary block is fixedly connected to a position close to the bracket with an auxiliary rod, the auxiliary rods are distributed in a circular shape on the auxiliary block, and three auxiliary rods are provided.

[0011] Preferably, the bottom of the auxiliary block is fixedly connected to the control box, and the top of the buffer block is slidably connected to the purification cylinder.

[0012] Preferably, the collecting assembly comprises an abutment plate, which is fixedly connected to the bottom of the inner cavity of the base, the outer surface of the abutment plate is fixedly connected to a connecting plate, and the top of the abutment plate is fixedly connected to an arc plate; An extraction cylinder is fixedly connected to the abutment disk near the arc plate, and is used to suck the smoke generated during surfacing welding. A limiting frame is fixedly connected to the outer surface of the extraction cylinder, and the bottom of the limiting frame is fixedly connected to the abutment disk. A collection shell is fixedly connected to the extraction cylinder away from the limiting frame.

[0013] Preferably, a limiting sleeve is fixedly connected to the bottom of the inner cavity of the limiting frame, a reset plate is fixedly connected to the top of the limiting sleeve, and the reset plate is distributed on the limiting sleeve in a circular shape, a matching plate is fixedly connected to the top of the reset plate, and the outer surface of the matching plate is slidably connected to the limiting frame; A lifting plate is slidably connected to the bottom of the inner cavity of the limiting frame, a fixing rod is fixedly connected to the top of the lifting plate, a movable plate is fixedly connected to the top of the fixing rod, and an outer surface of the movable plate is slidably connected to the limiting frame.

[0014] The present invention provides a surfacing method and a surfacing device for repairing a hot-rolled mandrel of a seamless steel pipe. The invention has the following beneficial effects: 1. The surfacing method and device for repairing the hot-rolled mandrel of the seamless steel pipe are provided with a welder, a displacement seat, and a clamping seat. The clamping seat is horizontally installed on the control box, so that the control box controls the clamping of the clamping seat, which is convenient for maintaining the stability of the clamping seat on the mandrel, ensuring the accuracy of the mandrel when surfacing, and adjusting the surfacing position with the movement of the displacement seat, which is convenient for adjusting the surfacing position when surfacing the mandrel, and preventing the mandrel from being missed during the surfacing process. Three welders are arranged on the mounting assembly, ensuring that the three welders are stable when surfacing the mandrel, and avoiding the problem of cracking of the mandrel after the welder surfacing.

[0015] 2. The surfacing welding method and surfacing welding device for repairing the hot-rolled mandrel of the seamless steel pipe are vertically installed on the displacement seat through the installation tube, so that the installation tube drives the welder to move, and prevents the mandrel from tilting during surfacing welding, which may affect the surfacing welding of the mandrel. The side support plate and the fixing block cooperate with each other to fix the air supply tube, so that the installation position of the air supply tube inside the installation tube is not easy to loosen, so that the fixing block and the side support plate are used for support, so that the air supply tube and the side support plate cooperate to separate the activity space inside the installation tube.

[0016] 3. The surfacing welding method and device for repairing the hot-rolled mandrel of the seamless steel pipe generate wind force inside the installation tube through the air supply tube and transmit it to the air guide tube, so that the wind force flowing inside the installation tube flows through the grooves of the installation tube, so that the residual welding slag is blown when the wind force flows to the mandrel surfacing position, and the position where the wind guide tube discharges the wind force is close to the blocking sleeve, so that the wind guide tube can quickly enter the blocking sleeve when flowing, which is convenient for the wind guide tube to guide the discharge of wind force and the blocking sleeve to increase the contact area inside the installation tube.

[0017] 4. The surfacing welding method and device for repairing the hot-rolled mandrel of the seamless steel pipe divide the interior of the barrier sleeve by the middle solid plate, so that the installation position of the middle solid plate plays a restrictive role inside the barrier sleeve, so that the middle solid plate blocks the flow of wind, and the connecting plate can knock the air supply tube, so that the dust adhering to the air supply tube falls off when knocked, so as to keep the air supply tube clean, and the connecting plate connects the two support frames, so that the connecting plate is tilted to drive the support frame to move.

[0018] 5. The surfacing welding method and device for repairing the hot-rolled mandrel of the seamless steel pipe are provided with two pressing plates on the middle solid plate, so that the pressing plates can support the support frame by extension and contraction, thereby increasing the bearing capacity of the support frame and ensuring the stability of the support frame when it moves. Two side connecting blocks are provided on the middle solid plate, so that the side connecting blocks can limit the contraction of the pressing plates, so that the side connecting blocks can play a guiding role when contacting the support frame, and ensure that the pressing plates are squeezed when the support frame moves.

[0019] 6. The surfacing welding method and surfacing welding device for repairing the hot-rolled mandrel of the seamless steel pipe, through the bracket on the control box and the blocking ring to fix the purification cylinder, it is convenient for the blocking ring to place the purification cylinder, thereby increasing the bearing capacity of the blocking ring on the bracket, preventing the blocking ring from breaking due to pressure and causing the purification cylinder to fall, and placing activated carbon inside the purification cylinder, so that the purification cylinder is placed on the blocking ring to purify the air around the equipment, and preventing the equipment from generating odor when performing mandrel surfacing welding to affect the use of the equipment.

[0020] 7. The surfacing method and device for repairing the hot-rolled mandrel of the seamless steel pipe connect the control box and the bracket through the auxiliary block, so that the auxiliary block can increase the contact area, and the auxiliary rod can be used to limit the installation position of the purification cylinder, so that the auxiliary rod and the auxiliary block cooperate with each other for reinforcement, and the buffer block has a spring, so that the buffer block is shaken and moved up and down under the drive of the spring, and the buffer block is lifted and down to knock on the purification cylinder, so that the buffer block drives the purification cylinder to move when knocking, so that the lifting of the buffer block is not easy to tilt and affect the support of the buffer block.

[0021] 8. The surfacing method and device for repairing the hot-rolled mandrel of the seamless steel pipe are installed inside the machine base through the abutment plate, so that the abutment plate can limit the collection space inside the machine base, and the collection shell is collected on the abutment plate, so that there is a movable space between the collection shell and the abutment plate, so that the collection shell can fully collect the welding slag, and the collection shell has a buffer pad inside, so that when the inside of the collection shell contacts the welding slag, it is not easy to rebound and cause the welding slag to scatter, thereby reducing the difficulty of subsequent welding slag cleaning.

[0022] 9. The surfacing welding method and surfacing welding device for repairing the hot-rolled mandrel of the seamless steel pipe, through the arc plate located between the abutment plate and the collection shell, facilitates the fallen part of the welding slag to enter the groove of the machine base, prevents the welding slag from scattering everywhere and affecting the subsequent cleaning, and the extraction tube can generate suction on the abutment plate, so that the suction generated by the extraction tube flows on the collection shell, so that the suction circulated by the extraction tube cooperates with the collection shell to assist in the collection of welding slag, and prevents the smoke from flowing everywhere and affecting the purification of the air.

[0023] 10. The surfacing welding method and device for repairing the hot-rolled mandrel of a seamless steel pipe reinforces the installation position of the extraction tube by placing a restriction frame on the abutment plate, so that the installation position of the restriction frame can restrict the extraction tube, and prevent the extraction tube from being displaced on the abutment plate to affect the collection of welding slag. The reset plate supports the matching plate on the restriction sleeve, so that the reset plate can be extended and retracted under the pressure of the matching plate, so that the resetting plate can drive the matching plate to move by extension and retraction, and prevent the displacement of the restriction sleeve from affecting the position of the matching plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of another perspective of the present invention as a whole; Figure 3 It is a structural schematic diagram of the installation assembly of the present invention; Figure 4 It is a schematic structural diagram of the barrier sleeve of the present invention; Figure 5 It is a structural schematic diagram of the solid disk in the present invention; Figure 6 It is a structural schematic diagram of the auxiliary components of the present invention; Figure 7 It is a schematic diagram of the structure of the support of the present invention; Figure 8 is an enlarged view of the auxiliary rod of the present invention; Fig. 9 It is a schematic diagram of the structure of the collecting component of the present invention; Fig.10 A schematic diagram of the structure of the collection component of the present invention from another perspective; Fig.11 It is a structural schematic diagram of the limiting frame of the present invention; Fig.12 It is an enlarged view of the reset plate of the present invention.

[0025] In the figure: 1. base; 2. control box; 3. clamping seat; 4. auxiliary component; 41. purification cylinder; 42. blocking ring; 43. bracket; 44. auxiliary block; 45. buffer block; 46. auxiliary rod; 5. installation component; 51. fixed block; 52. air supply cylinder; 53. side support plate; 54. installation cylinder; 55. air guide duct; 56. barrier sleeve; 561. middle solid plate; 562. connecting plate; 563. side block; 564. pressing plate; 565. supporting frame; 6. collecting component; 61. abutting plate; 62. arc plate; 63. collecting shell; 64. connecting plate; 65. extraction cylinder; 66. limiting frame; 661. lifting plate; 662. fixing rod; 663. movable plate; 664. limiting sleeve; 665. reset plate; 666. matching plate; 7. displacement seat; 8. screw; 9. welding device. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0027] Example 1, please refer to Figure 1-Figure 12The present invention provides a technical solution: a surfacing device for repairing a hot-rolled mandrel of a seamless steel pipe, comprising a machine base 1, a control box 2 is fixedly connected to the top of the machine base 1, a groove is provided below the position of the mandrel surfacing of the clamping seat 3 through the machine base 1, so that the groove of the machine base 1 collects the welding slag to avoid the welding slag being scattered all over the machine base 1 and increasing the difficulty of collection, and the position of the groove of the machine base 1 can limit the moving distance of the displacement seat 7, so that the displacement seat 7 gradually stops when it moves close to the groove, so that the machine base 1 and the control box 2 cooperate with each other to play a limiting effect, avoiding In order to avoid displacement of components installed on the machine base 1 to affect the accuracy of surfacing, the outer surface of the control box 2 is rotatably connected with a clamping seat 3, which is horizontally installed on the control box 2, so that the control box 2 controls the clamping of the clamping seat 3, which is convenient for maintaining the stability of the clamping of the mandrel by the clamping seat 3. The mandrel is driven to rotate by the clamping seat 3 to adjust the subsequent surfacing position of the mandrel, ensuring the accuracy of the mandrel when surfacing, and the operation of the clamping seat 3 and the equipment is controlled by the control box 2, which is convenient for taking and placing the mandrel clamped by the clamping seat 3, and also includes: Auxiliary component 4, the auxiliary component 4 is fixedly connected to the top of the control box 2, and the auxiliary component 4 is used for air purification during surfacing work; The screw 8 is rotatably connected to the top of the machine base 1. The screw 8 is used to adjust the position of the surfacing. The screw 8 is driven by the driving motor to rotate, so that the screw 8 rotates clockwise on the machine base 1 to drive the displacement seat 7 to move in the direction close to the control box 2. The surfacing position is adjusted with the movement of the displacement seat 7, which is convenient for adjusting the position of the surfacing during the core rod surfacing to prevent the core rod from being missed during the surfacing process and ensure the thorough surfacing of the core rod. The screw 8 rotates counterclockwise to drive the displacement seat 7 to move away from the control box 2. When the displacement seat 7 drives the installation component 5 away from the control box 2, the movement of the installation component 5 on the displacement seat 7 is not easily affected. The rotation of the screw 8 can guide the displacement seat 7 to prevent the displacement seat 7 from When the machine base 1 is moved and tilted or stuck, the outer surface of the screw rod 8 is rotatably connected to the displacement seat 7, the top of the displacement seat 7 is rotatably connected to the mounting assembly 5, and the outer surface of the mounting assembly 5 is fixedly connected to the welder 9, and three welders 9 are arranged on the mounting assembly 5, so that the three welders 9 use low-alloy welding wire, medium-low alloy welding wire and high-alloy welding wire in turn for surfacing work, ensuring that the three welders 9 are stable when surfacing the core rod, avoiding the problem of cracking of the welder 9 after surfacing the core rod, and the use of the three welders 9 is adjusted with the clockwise rotation of the mounting assembly 5, so that the welder 9 is not prone to excessive rotation angle during the adjustment process, thereby avoiding deviation in contact between the welder 9 and the core rod; The collecting assembly 6 is fixedly connected to the bottom of the inner cavity of the machine base 1. The collecting assembly 6 is used to collect the welding slag dropped by the welder 9 during the surfacing welding. The collecting assembly 6 is installed inside the groove of the machine base 1, so that the collecting assembly 6 collects the dropped welding slag, which is convenient for the welding slag collected by the machine base 1 to be removed together during cleaning, ensuring the quick cleaning of the welding slag. The collecting assembly 6 can buffer the welding slag when it contacts the welding slag, so that the welding slag is not easy to splash during collection. The collecting assembly 6 is located below the mandrel surfacing position, so that the collecting assembly 6 corresponds to the mandrel clamped by the clamping seat 3; The mounting assembly 5 includes a mounting cylinder 54, which is rotatably connected to the top of the displacement seat 7 and is vertically mounted on the displacement seat 7 through the mounting cylinder 54, so that the mounting cylinder 54 is driven by the rotating motor to rotate, thereby adjusting the direction of the mounting cylinder 54, so that the mounting cylinder 54 can drive the welder 9 to move, and the position where the welder 9 is mounted on the mounting cylinder 54 is higher than the clamping position of the core rod, so that the welder 9 is not easily affected when surfacing the core rod, and the core rod is prevented from tilting during surfacing and affecting the surfacing of the core rod. The mounting cylinder 54 is used to The position of the device 9 is adjusted, the top of the installation cylinder 54 is fixedly connected with a fixing block 51, and the bottom of the inner cavity of the installation cylinder 54 is fixedly connected with a blocking sleeve 56. The blocking sleeve 56 is inside the installation cylinder 54, so that the blocking sleeve 56 can reinforce the bottom of the installation cylinder 54 to prevent the position of the installation cylinder 54 connecting the rotating motor and the displacement seat 7 from being affected, and the inside of the blocking sleeve 56 can guide the air flowing through the installation cylinder 54, so that the wind can flow through the blocking sleeve 56, so that the blocking sleeve 56 can increase the contact area inside the installation cylinder 54; The air supply tube 52 is fixedly connected to the top of the inner cavity of the mounting tube 54. The air supply tube 52 generates wind inside the mounting tube 54 and transmits it to the air guide 55, so that the air guide 55 discharges the wind into the mounting tube 54, so that the wind flowing inside the mounting tube 54 can flow through the grooves of the mounting tube 54, so that the residual welding slag can be blown when the wind flows to the core rod surfacing position, so that the wind can clean the core rod after surfacing. The air supply tube 52 is used to blow the core rod after surfacing. The outer surface of the air supply tube 52 is fixedly connected with a side support plate 53, and the air supply tube 52 is fixed by the cooperation of the side support plate 53 and the fixing block 51, so that the installation position of the air supply tube 52 inside the mounting tube 54 is not easy to loosen, thereby using the fixing block 51 and the side support plate 53 The side support plate 53 limits the installation position of the air supply cylinder 52 inside the installation cylinder 54, so that the air supply cylinder 52 and the side support plate 53 cooperate to separate the activity space inside the installation cylinder 54. The position of the air supply cylinder 52 away from the side support plate 53 is connected to the air duct 55, and three air ducts 55 are arranged on the air supply cylinder 52 to facilitate the air flow through the air duct 55 to discharge it to different positions inside the installation cylinder 54, thereby ensuring the circulation of wind inside the installation cylinder 54. The position where the air duct 55 discharges wind is close to the barrier sleeve 56, so that the air duct 55 can quickly enter the barrier sleeve 56 when it circulates, which is convenient for the air duct 55 to guide the discharge of wind.

[0028] The side support plate 53 is fixedly connected to the mounting tube 54 at a position away from the air supply tube 52 , and the bottom end of the fixing block 51 is fixedly connected to the air supply tube 52 .

[0029] The bottom of the displacement seat 7 is slidably connected to the machine base 1 , and the outer surface of the welder 9 passes through the mounting tube 54 .

[0030] The side of the clamping seat 3 away from the mounting tube 54 penetrates the control box 2 and extends to the inside of the control box 2 , and the bottom of the auxiliary component 4 penetrates the control box 2 and extends to the inside of the control box 2 .

[0031] The inner surface of the blocking sleeve 56 is fixedly connected with a middle solid plate 561, and the inside of the blocking sleeve 56 is separated by the middle solid plate 561, so that the middle solid plate 561 reinforces the position of the blocking sleeve 56 close to the mounting tube 54, thereby utilizing the mounting position of the middle solid plate 561 to play a restrictive role inside the blocking sleeve 56, so that the middle solid plate 561 can block the flow of wind, and the middle solid plate 561 is installed horizontally, and the top of the middle solid plate 561 is fixedly connected with a side connecting block 563, and the middle solid plate 561 is fixedly connected with the side connecting block 563. Two side blocks 563 are provided on the support frame 565, so that the side blocks 563 can limit the contraction of the pressing plate 564, so that the side blocks 563 can play a guiding role when contacting the support frame 565, ensuring that the pressing plate 564 is squeezed when the support frame 565 moves, and the side blocks 563 and the pressing plate 564 cooperate with each other between the support frame 565 and the middle solid plate 561, so as to support the support frame 565, avoid the middle solid plate 561 from tilting and affecting the extension and contraction of the pressing plate 564, and enable the side blocks 563 to be vertically installed on the middle solid plate 561; The pressing plate 564 is fixedly connected to the middle solid plate 561 near the side connecting block 563. Two pressing plates are set on the middle solid plate 561 through the pressing plate 564, so that the pressing plate 564 is retracted and expanded under the pressure of the support frame 565, so that the pressing plate 564 can support the support frame 565 by retracting and expanding, thereby increasing the bearing capacity of the support frame 565 and ensuring the stability of the support frame 565 when moving. The pressing plate 564 is retracted and expanded to cooperate with the connecting plate 562 to play a blocking effect, and the pressing plate 564 is elastic, so that the pressing plate 564 can push the support frame 565 to reset. The top of the pressing plate 564 is fixedly connected to the support frame 565, and the top of the support frame 565 is fixedly connected to the connecting plate 562. The connecting plate 562 contacts the air supply tube 52, so that the connecting plate 562 is affected by the wind. The connection disk 562 is lifted and lowered by the blowing force, so that the connection disk 562 is separated from the air supply tube 52. When the connection disk 562 contacts the air supply tube 52 again, the connection disk 562 can knock on the air supply tube 52, so that the dust adhering to the air supply tube 52 is knocked off, so as to keep the air supply tube 52 clean. The connection disk 562 is connected to the two support frames 565, so that the connection disk 562 drives the support frame 565 to move, so that the support frame 565 and the connection disk 562 cooperate with each other to play a supporting role. During the lifting process of the connection disk 562, it can tilt due to the push of the wind force, so that the connection disk 562 tilts and drives the support frame 565 to move, thereby adjusting the contact area between the connection disk 562 and the support frame 565, and the top of the connection disk 562 is slidably connected to the air supply tube 52.

[0032] The top of the connecting plate 562 extends to the outside of the blocking sleeve 56 , and the bottom of the supporting frame 565 is slidably connected to the side connecting block 563 .

[0033] The auxiliary component 4 includes a bracket 43, which is fixedly connected to the top of the control box 2. The bracket 43 cooperates with the blocking ring 42 on the control box 2 to fix the purification cartridge 41, so that the bracket 43 and the blocking ring 42 have a placement space, which is convenient for the blocking ring 42 to place the purification cartridge 41. The activity space exposed by the bracket 43 can be observed from the outside, and the bracket 43 can fix the blocking ring 42, so that the blocking ring 42 is reinforced by the bracket 43, thereby increasing the bearing force of the blocking ring 42 on the bracket 43, preventing the blocking ring 42 from being broken by pressure and causing the purification cartridge 41 to be broken. 1 falls, a blocking ring 42 is fixedly connected to the top of the bracket 43, and a purification cylinder 41 is slidably connected to the inner surface of the blocking ring 42. Activated carbon is placed inside the purification cylinder 41, and the purification cylinder 41 is placed on the blocking ring 42 to purify the air around the equipment, so as to prevent the equipment from generating odor during core rod surfacing and affecting the use of the equipment. When the purification cylinder 41 is shaken, it can move on the blocking ring 42, so that the purification cylinder 41 drives the activated carbon stored inside to move, ensuring that the activated carbon is fully in contact with the air inside the purification cylinder 41 for purification, and avoiding the activated carbon from accumulating inside the purification cylinder 41, resulting in incomplete use of the activated carbon; The auxiliary block 44 is fixedly connected to the inner surface of the bracket 43. The control box 2 and the bracket 43 are connected by the auxiliary block 44, so that the auxiliary block 44 can increase the contact area, thereby increasing the stability of the installation position of the bracket 43. Three auxiliary rods 46 are set on the auxiliary block 44, so that the auxiliary rods 46 can support the placed purification cylinder 41, so that the purification cylinder 41 can be placed vertically, ensuring that the purification cylinder 41 is not easily affected by excessive falling after installation. The auxiliary rods 46 can limit the installation position of the purification cylinder 41, ensuring that the auxiliary rods 46 reinforce the edge position of the purification cylinder 41, so that the auxiliary rods 46 and the auxiliary block 44 cooperate with each other for reinforcement, and the top of the auxiliary block 44 is fixed A buffer block 45 is connected, and the buffer block 45 has a spring, so that the buffer block 45 is shaken and raised and lowered by the spring. The buffer block 45 is raised and lowered to knock on the purification cylinder 41, so that the purification cylinder 41 is driven to move when the buffer block 45 knocks. As the purification cylinder 41 moves, the activated carbon can be driven to move, thereby providing thrust for the movement of the purification cylinder 41, and the lifting and lowering of the buffer block 45 is supported in cooperation with the auxiliary rod 46, so that the buffer block 45 can limit the installation position of the purification cylinder 41. The buffer block 45 is limited by the auxiliary rod 46 when it is lifted and lowered, so that the lifting of the buffer block 45 is not easy to tilt and affect the support of the buffer block 45, and the auxiliary block 44 is fixedly connected with the auxiliary rod 46 near the bracket 43.

[0034] The bottom of the auxiliary block 44 is fixedly connected to the control box 2 , and the top of the buffer block 45 is slidably connected to the purification cylinder 41 .

[0035] Among them, the collecting component 6 includes an abutment plate 61, which is fixedly connected to the bottom of the inner cavity of the machine base 1 and is installed inside the machine base 1 through the abutment plate 61, so that the abutment plate 61 can block the collecting space, which is convenient for the abutment plate 61 to limit the collecting space inside the machine base 1, and the connecting plate 64 on the abutment plate 61 supports the position of the connecting screw 8 of the machine base 1 close to one end of the control box 2, so that the position where the connecting plate 64 connects to the machine base 1 fixes the installation position of the abutment plate 61, preventing the abutment plate 61 from deviating in the groove of the machine base 1 and affecting the collection of welding slag. The abutment plate 61 and the connecting plate 64 cooperate with each other to block the welding slag, ensuring that the welding slag is fully collected inside the machine base 1. The outer surface of the abutment disk 61 is fixedly connected with a connecting plate 64, and the top of the abutment disk 61 is fixedly connected with an arc plate 62. The arc plate 62 is located between the abutment disk 61 and the collecting shell 63, so that the arc plate 62 blocks the abutment disk 61, which is convenient for some of the fallen welding slag to enter the groove of the machine base 1, ensuring that the welding slag dropped inside the machine base 1 is collected in an orderly manner, and preventing the welding slag from scattering everywhere and affecting subsequent cleaning. The arc plate 62 and the connecting plate 64 cooperate with each other to protect the abutment disk 61, so that the installation position of the arc plate 62 on the abutment disk 61 can be reinforced, so that the arc plate 62 can support the collecting shell 63 when it drops, and the arc plate 62 can limit the drop of the collecting shell 63; The extraction tube 65 is fixedly connected to the abutment disk 61 at a position close to the arc plate 62. The extraction tube 65 is used to suck the fume generated during surfacing welding. The extraction tube 65 can generate suction on the abutment disk 61, so that the suction generated by the extraction tube 65 can flow on the collecting shell 63, so that the suction flowing through the extraction tube 65 cooperates with the collecting shell 63 to assist in the collection of welding slag. The extraction tube 65 is used to absorb welding slag while collecting fume, so as to prevent the fume from circulating everywhere and affecting the purification of air. The extraction tube 65 can support the collecting shell 63, so that the extraction tube 65 supports the installation position of the collecting shell 63. The air inlet of the extraction tube 65 cooperates with the collecting shell 63 to collect welding slag, so that there is a gap between the position where the collecting shell 63 is connected to the extraction tube 65 and the arc plate 62. The gap allows the collecting shell 63 to maintain a horizontal state for collecting welding slag. The outer surface of the extraction tube 65 is fixedly connected to a limiting frame 66. The bottom of the limiting frame 66 is fixedly connected to the abutment plate 61. The position of the extraction tube 65 away from the limiting frame 66 is fixedly connected to the collecting shell 63. The welding slag is collected above the abutment plate 61 through the collecting shell 63, so that the collecting shell 63 corresponds to the position of the core rod surfacing, which is convenient for there to be a movable space between the collecting shell 63 and the abutment plate 61, so that the collecting shell 63 can fully collect the welding slag. The inside of the collecting shell 63 is provided with a buffer pad, so that when the inside of the collecting shell 63 contacts the welding slag, it is not easy to rebound and cause the welding slag to scatter. As the collecting shell 63 drops the welding slag to the outside of the collecting shell 63, the collecting shell 63 and the abutment plate 61 cooperate to collect the welding slag, thereby reducing the difficulty of subsequent welding slag cleaning.

[0036] The bottom of the inner cavity of the limiting frame 66 is fixedly connected with a limiting sleeve 664, and the installation position of the extraction tube 65 on the abutment disk 61 is reinforced by the limiting frame 66, so that the installation position of the limiting frame 66 can limit the extraction tube 65, and avoid the displacement of the extraction tube 65 on the abutment disk 61 to affect the collection of welding slag, and the limiting frame 66 can cooperate with the arc plate 62 to increase the weight of the abutment disk 61 itself, so that the limiting frame 66 and the movable plate 663 can reinforce the abutment disk 61 at different positions to ensure the firmness of the installation position of the limiting frame 66, and the top of the limiting sleeve 664 is fixedly connected with a reset plate 665, and the matching plate 666 is supported on the limiting sleeve 664 by the reset plate 665, so that the reset plate 665 can be extended and retracted by the pressure of the matching plate 666, so that the reset plate 665 can extend and retract to drive the matching plate 666 to move, and the reset plate 665 The limiting sleeve 664 is distributed in a circular shape, so that the limiting sleeve 664 cooperates with the reset plate 665 to fix the installation position of the matching plate 666, and keeps the limiting sleeve 664 vertically installed inside the limiting frame 66 to prevent the limiting sleeve 664 from being displaced and affecting the position of the matching plate 666. The top of the reset plate 665 is fixedly connected with the matching plate 666, and the matching plate 666 is moved along the limiting frame 66 by shaking, so that the matching plate 666 drives the reset plate 665 to move, so that the matching plate 666 squeezes the reset plate 665, and the reset plate 665 is extended to push the matching plate 66 to reset, ensuring that the matching plate 666 adjusts the support position when moving inside the limiting frame 66, so that the matching plate 666 reinforces the inside of the limiting frame 66, thereby increasing the bearing capacity of the limiting frame 66, and the outer surface of the matching plate 66 is slidably connected to the limiting frame 66; The lifting plate 661 is slidably connected to the bottom of the inner cavity of the limiting frame 66. The lifting plate 661 is moved inside the limiting frame 66 by the pressure of the movable plate 663 through the fixing rod 662, so that the elastic force of the lifting plate 661 can push the movable plate 663 to reset, so that the movable plate 663 is pushed by the lifting plate 661 to perform lifting and lowering movements, and the lifting plate 661 is prevented from tilting when performing lifting and lowering movements to affect the sliding of the movable plate 663. The extension and retraction of the lifting plate 661 can limit the lifting range of the movable plate 663, so that the lifting plate 661 and the limiting sleeve 664 cooperate with each other to ensure To maintain the contact area during lifting and lowering, the top of the lifting plate 661 is fixedly connected to a fixed rod 662, and the top of the fixed rod 662 is fixedly connected to a movable plate 663. The movable plate 663 is shaken inside the limiting frame 66 and moves with the matching plate 666, so that the movable plate 663 moves along the limiting frame 66 to squeeze the fixed rod 662, which is convenient for the movable plate 663 to move and the matching plate 666 to tighten the limiting frame 66, ensuring the movable space inside the limiting frame 66, preventing the movable plate 663 from getting stuck and affecting its use when moving, and the outer surface of the movable plate 663 is slidably connected to the limiting frame 66.

[0037] Example 2, please refer to Figure 1-Figure 12 On the basis of Example 1, the present invention provides a technical solution: a surfacing method of a surfacing device for repairing a hot-rolled mandrel of a seamless steel pipe, step 1: the mandrel is turned on a lathe to remove surface defects and is prepared for surfacing, and then the mandrel to be surfacing is clamped on a clamping seat 3, and the control box 2 controls the clamping of the clamping seat 3 on the machine base 1, so that the clamping seat 3 can rotate on the control box 2, and after the mandrel is clamped, the screw 8 is driven by the driving motor to rotate clockwise, so that the screw 8 rotates clockwise to drive the displacement seat 7 to move in a direction close to the control box 2, and vice versa, the screw 8 rotates counterclockwise to drive the displacement seat 7 to move in a direction away from the control box 2; Step 2: The installation cylinder 54 is driven by the displacement seat 7 to move to a position close to the core rod and stop, so that the three welders 9 arranged on the installation cylinder 54 respectively use low-alloy welding wire, medium-low alloy welding wire, and high-alloy welding wire. The installation cylinder 54 is driven by the rotating motor on the displacement seat 7 to rotate clockwise, so that the installation cylinder 54 rotates and drives the three welders 9 to sequentially install the low-alloy welding wire, medium-low alloy welding wire, and high-alloy welding wire to perform surfacing welding on the core rod. During the surfacing welding of the core rod, the clamping seat 3 rotates with the surfacing welding of the core rod, so as to adjust the surfacing position of the core rod. After the core rod is surfacing three times, the core rod is removed from the clamping seat 3; Step 3: Use the fixing block 51 and the side support plate 53 to fix the air supply cylinder 52 on the installation cylinder 54, so that the air supply cylinder 52 can deliver wind after the welder 9 completes the surfacing. The wind delivered by the air supply cylinder 52 flows through the air guide pipe 55 inside the installation cylinder 54. As the wind is discharged through the groove on the surface of the installation cylinder 54, it can blow toward the surfacing position of the core rod to blow off the welding slag remaining at the surfacing position of the core rod. The blocking sleeve 56 supports the middle solid plate 561 inside the installation cylinder 54. When the wind flows inside the installation cylinder 54, the wind pushes the connecting plate 562 to move inside the blocking sleeve 56, so that the connecting plate 562 drives the supporting frame 565 to move and squeeze the pressing plate 564. The pressing plate 564 expands and contracts on the middle solid plate 561, so that the connecting plate 562 is lifted and lowered. When the supporting frame 565 is lifted and lowered to contact the side connecting block 563, it moves along the side connecting block 563. Step 4: The bracket 43 cooperates with the blocking ring 42 to limit the installation position of the purification cylinder 41, so that the activated carbon placed inside the purification cylinder 41 can purify the air. The auxiliary block 44 is connected to the bracket 43, so that the auxiliary rods 46 distributed in a circular shape on the auxiliary block 44 support the purification cylinder 41. At the same time, the buffer block 45 has a spring, so that the buffer block 45 and the auxiliary rod 46 contact the purification cylinder 41 together. When the buffer block 45 shakes, the spring expands and contracts to drive the buffer block 45 to rise and fall, so that the buffer block 45 knocks the purification cylinder 41; Step 5: The welding slag generated by the surfacing welding on the clamping seat 3 gradually falls off through the core rod, and the machine base 1 is provided with a groove below the core rod surfacing position, and the groove receives the fallen welding slag, so that the extraction tube 65 generates suction on the abutment plate 61, and the suction generated by the extraction tube 65 absorbs the fallen welding slag, and at the same time, the extraction tube 65 absorbs the smoke generated during the surfacing welding process, so that the welding slag is sucked and falls onto the collecting shell 63, and the collecting shell 63 is located inside the machine base 1 below the position where the clamping seat 3 clamps the core rod, so that the collecting shell 63 collects the welding slag inside the groove of the machine base 1, and the connecting plate 64 supports the position of the machine base 1 connecting the screw 8 on the abutment plate 61; Step six: Use the limiting frame 66 to contact the extraction cylinder 65 on the abutment plate 61, so that the limiting frame 66 fixes the extraction cylinder 65, and along with the limiting sleeve 664, the matching plate 666 is supported via the reset plate 665, so that when the matching plate 666 is shaken, the reset plate 665 is driven to extend and retract, and the matching plate 666 moves along the limiting frame 66. At the same time, the movable plate 663 is shaken to squeeze the fixed rod 662, so that the fixed rod 662 squeezes the lifting plate 661 and moves along the limiting frame 66.

[0038] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe, comprising a machine base (1), a control box (2) being fixedly connected to the top of the machine base (1), a clamping seat (3) being rotatably connected to the outer surface of the control box (2), characterized in that: Also includes: An auxiliary component (4), the auxiliary component (4) being fixedly connected to the top of the control box (2), and the auxiliary component (4) being used for purifying air during surfacing work; A screw rod (8) rotatably connected to the top of the machine base (1), the screw rod (8) being used to adjust the position of the surfacing welding, the outer surface of the screw rod (8) being rotatably connected to a displacement seat (7), the top of the displacement seat (7) being rotatably connected to a mounting assembly (5), and the outer surface of the mounting assembly (5) being fixedly connected to a welder (9); A collecting component (6), the collecting component (6) being fixedly connected to the bottom of the inner cavity of the machine base (1), the collecting component (6) being used to collect welding slag dropped by the welder (9) during surfacing welding; The mounting assembly (5) comprises a mounting cylinder (54), the mounting cylinder (54) being rotatably connected to the top of the displacement seat (7), the mounting cylinder (54) being used to adjust the position of the welder (9), the top of the mounting cylinder (54) being fixedly connected to a fixing block (51), and the bottom of the inner cavity of the mounting cylinder (54) being fixedly connected to a blocking sleeve (56); An air supply tube (52) is fixedly connected to the top of the inner cavity of the mounting tube (54), and is used to blow the core rod after surfacing welding. The outer surface of the air supply tube (52) is fixedly connected to a side support plate (53), and a position of the air supply tube (52) away from the side support plate (53) is connected to an air guide pipe (55).

2. A surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe according to claim 1, characterized in that: The side support plate (53) is fixedly connected to the mounting tube (54) at a position away from the air supply tube (52), and the bottom end of the fixing block (51) is fixedly connected to the air supply tube (52).

3. The surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe according to claim 1, characterized in that: The bottom of the displacement seat (7) is slidably connected to the machine base (1), and the outer surface of the welder (9) passes through the mounting tube (54).

4. The surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe according to claim 1, characterized in that: The side of the clamping seat (3) away from the mounting cylinder (54) penetrates the control box (2) and extends into the interior of the control box (2), and the bottom of the auxiliary component (4) penetrates the control box (2) and extends into the interior of the control box (2).

5. The surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe according to claim 1, characterized in that: A middle solid plate (561) is fixedly connected to the inner surface of the barrier sleeve (56), and a side connection block (563) is fixedly connected to the top of the middle solid plate (561); A pressing plate (564) is fixedly connected to a position of the middle fixing plate (561) close to the side connection block (563); the top of the pressing plate (564) is fixedly connected to a support frame (565); the top of the support frame (565) is fixedly connected to a connecting plate (562); the top of the connecting plate (562) is slidably connected to the air supply tube (52).

6. A surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe according to claim 5, characterized in that: The top of the connection plate (562) extends to the outside of the blocking sleeve (56), and the bottom of the support frame (565) is slidably connected to the side connection block (563).

7. The surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe according to claim 1, characterized in that: The auxiliary component (4) comprises a bracket (43), the bracket (43) being fixedly connected to the top of the control box (2), a blocking ring (42) being fixedly connected to the top of the bracket (43), and a purification cartridge (41) being slidably connected to the inner surface of the blocking ring (42); An auxiliary block (44) is fixedly connected to the inner surface of the bracket (43), a buffer block (45) is fixedly connected to the top of the auxiliary block (44), and an auxiliary rod (46) is fixedly connected to the position of the auxiliary block (44) close to the bracket (43).

8. The surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe according to claim 7, characterized in that: The bottom of the auxiliary block (44) is fixedly connected to the control box (2), and the top of the buffer block (45) is slidably connected to the purification cylinder (41).

9. The surfacing welding device for repairing a hot-rolled mandrel of a seamless steel pipe according to claim 1, characterized in that: The collecting assembly (6) comprises an abutment plate (61), the abutment plate (61) being fixedly connected to the bottom of the inner cavity of the machine base (1), a connecting plate (64) being fixedly connected to the outer surface of the abutment plate (61), and an arc-shaped plate (62) being fixedly connected to the top of the abutment plate (61); An extraction tube (65) is fixedly connected to a position of the abutment disk (61) close to the arc plate (62), and the extraction tube (65) is used to extract smoke generated during cladding. A limiting frame (66) is fixedly connected to the outer surface of the extraction tube (65), and the bottom of the limiting frame (66) is fixedly connected to the abutment disk (61). A collection shell (63) is fixedly connected to a position of the extraction tube (65) away from the limiting frame (66).

10. A surfacing method for a surfacing device for repairing a hot-rolled mandrel of a seamless steel pipe, characterized in that: Step 1: After the core rod is turned on a lathe to remove surface defects, it is prepared for cladding, and then the core rod to be clad is clamped on the clamping seat (3). The control box (2) controls the clamping of the clamping seat (3) on the machine base (1) so that the clamping seat (3) can rotate on the control box (2). After the core rod is clamped, the screw rod (8) is driven by the driving motor to rotate clockwise, so that the screw rod (8) rotates clockwise to drive the displacement seat (7) to move in a direction close to the control box (2). Conversely, the screw rod (8) rotates counterclockwise to drive the displacement seat (7) to move in a direction away from the control box (2); Step 2: The displacement seat (7) drives the installation cylinder (54) to move to a position close to the core rod and stop, so that the three welders (9) arranged on the installation cylinder (54) respectively use low-alloy welding wire, medium-low alloy welding wire, and high-alloy welding wire. The installation cylinder (54) is driven by the rotating motor on the displacement seat (7) to rotate in a clockwise direction, so that the installation cylinder (54) rotates and drives the low-alloy welding wire, medium-low alloy welding wire, and high-alloy welding wire installed by the three welders (9) in sequence to perform overlay welding on the core rod. During the overlay welding of the core rod, the clamping seat (3) rotates along with the overlay welding of the core rod, thereby adjusting the overlay welding position of the core rod. After the core rod is overlaid three times, the core rod is removed from the clamping seat (3); Step 3: The air supply tube (52) is fixed on the installation tube (54) by using the fixing block (51) and the side support plate (53), so that the air supply tube (52) delivers wind after the welding of the welder (9) is completed. The wind delivered by the air supply tube (52) flows through the air guide pipe (55) inside the installation tube (54). As the wind is discharged through the groove on the surface of the installation tube (54), it can be blown toward the welding position of the core rod, blowing off the welding slag remaining at the welding position of the core rod. The blocking sleeve (56) is installed on the installation tube ( 54) internally supports the middle solid plate (561), when the wind force is generated in the internal flow of the installation tube (54), the wind force pushes the connection plate (562) to move inside the blocking sleeve (56), so that the connection plate (562) drives the support frame (565) to move and press the pressing plate (564), and the pressing plate (564) is extended and retracted on the middle solid plate (561), so that the connection plate (562) is lifted and lowered, and the support frame (565) moves along the side connection block (563) when it is lifted and lowered to contact the side connection block (563); Step 4: The bracket (43) and the blocking ring (42) are used to limit the installation position of the purification cylinder (41), so that the activated carbon placed inside the purification cylinder (41) can purify the air. The auxiliary block (44) is connected to the bracket (43), so that the auxiliary rods (46) distributed in a circular shape on the auxiliary block (44) support the purification cylinder (41). At the same time, the buffer block (45) has a spring, so that the buffer block (45) and the auxiliary rod (46) contact the purification cylinder (41) together. When the buffer block (45) shakes, the spring expands and contracts to drive the buffer block (45) to rise and fall, so that the buffer block (45) knocks the purification cylinder (41); Step 5: The welding slag generated by the surfacing welding on the clamping seat (3) gradually falls off through the core rod, and a groove is opened on the machine base (1) below the core rod surfacing position, and the groove receives the fallen welding slag, so that the extraction tube (65) generates suction on the abutment plate (61). The suction generated by the extraction tube (65) absorbs the fallen welding slag, and at the same time, the extraction tube (65) also absorbs the smoke generated during the surfacing welding process, so that the welding slag falls onto the collection shell (63) while being sucked. The collection shell (63) is located inside the machine base (1) below the position of the clamping seat (3) holding the core rod, so that the collection shell (63) collects the welding slag inside the groove of the machine base (1), and the connecting plate (64) supports the position of the machine base (1) connecting the screw (8) on the abutment plate (61); Step 6: Use the limiting frame (66) to contact the extraction tube (65) on the abutment plate (61), so that the limiting frame (66) fixes the extraction tube (65), and along with the limiting sleeve (664) supports the matching plate (666) via the reset plate (665), so that when the matching plate (666) is shaken, the reset plate (665) is driven to extend and retract, and the matching plate (666) moves along the limiting frame (66), and at the same time, the movable plate (663) is shaken to squeeze the fixed rod (662), so that the fixed rod (662) squeezes the lifting plate (661) and moves along the limiting frame (66).

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