A lifting method for a pipe forging for a pressure vessel during quenching treatment

Abstract

The present invention relates to the technical field of quenching forging pipes, and more specifically, to a lifting method for quenching forging pipes for pressure vessels. The lifting mechanism includes a bracket, a movable plate is slidably provided inside the bracket, a hydraulic rod is fixedly connected to the bottom of the movable plate, an electric clamp is provided at the output end of the hydraulic rod for clamping the forging from the forging area to the quenching area, and two control mechanisms are provided on the outer wall of the electric clamp; the present invention starts the hydraulic rod to move upward, driving the electric clamp, the control mechanism, the receiving mechanism and the connecting plate to reset and move, and under the force of the No. 1 reset spring to restore the deformation, the two connecting plates are driven to move toward the central axis of the hydraulic rod in cooperation with the rotating ring and the movable rod, and gradually fit together, so that when the electric clamp clamps the forging to be quenched and moves to the quenching area, the two connecting plates are in a V shape, which can receive the molten beads dropped from the bottom of the forging to prevent the molten beads from scattering everywhere.

Description

Technical Field

[0001] The invention relates to the technical field of quenching of pipe forgings, in particular to a lifting method in quenching treatment of pipe forgings for pressure vessels. Background Art

[0002] Pressure vessels refer to closed equipment that contains gas or liquid and bears a certain pressure. In order to more effectively implement scientific management and safety supervision and inspection, my country's "Safety Supervision Regulations for Pressure Vessels" divides pressure vessels into three categories according to working pressure, medium hazard and its role in production. Pressure vessels usually have many pipe forgings made of heat-resistant steel. During the processing of forgings, the forgings need to be quenched, that is, the forgings are heated to above the critical point of austenitization temperature, kept at a temperature for a certain period of time for austenitization, and then rapidly cooled at a cooling rate greater than the critical cooling rate to transform the supercooled austenite into martensite.

[0003] In the existing technical system, most of the ways to quench butt-joint forgings are to clamp the forgings with a hoist and then place the butt-joint forgings in clean water for water cooling. However, during the clamping process of the forgings after heat treatment, the molten beads on the surface of the forgings will fall from the surface of the forgings, thereby posing a risk of scalding operators and equipment. Moreover, most quenching boxes are open-topped. When the forgings are immersed in clean water, the boiling water splashes outside the quenching box, also posing a risk of scalding operators. Moreover, the clean water inside most quenching boxes flows slowly, so when the forgings are quenched, the uniformity of the water temperature inside the quenching box cannot be guaranteed, thereby reducing the quenching efficiency. In view of this, we propose a lifting method for quenching butt-joint forgings for pressure vessels. Summary of the invention

[0004] The object of the present invention is to provide a lifting method for a pipe forging for a pressure vessel during quenching treatment, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides a lifting method for a pipe forging for a pressure vessel during quenching treatment, comprising the following steps:

[0006] S1. Move and clamp the pipe forging to be quenched by the lifting mechanism;

[0007] S2. When the pipe forging to be quenched is moved to the quenching area, the pipe forging is immersed in the quenching area for quenching treatment;

[0008] S3. After the quenching of the pipe forging is completed, it is transferred out of the quenching area, wherein:

[0009] The lifting mechanism comprises a bracket, a movable plate is slidably arranged inside the bracket, a hydraulic rod is fixedly connected to the bottom of the movable plate, an electric clamp is arranged at the output end of the hydraulic rod for clamping the forging from the forging area to the quenching area, two control mechanisms are arranged on the outer wall of the electric clamp, and a receiving mechanism is arranged inside the two control mechanisms;

[0010] When the electric clamp is driven downward by the output end of the hydraulic rod to clamp the outside of the forging, the two receiving mechanisms are driven by the control mechanism to be parallel to each other and located on the outside of the forging. When the electric clamp is driven upward by the output end of the hydraulic rod to transfer to the quenching area, the two receiving mechanisms are driven by the control mechanism to be V-shaped and located below the forging. When the forging is quenched, the receiving mechanism reciprocates to disturb the quenching liquid.

[0011] As a further improvement of the present technical solution, the receiving mechanism includes a hollow sleeve fixedly connected to the bottom of the L-shaped plate, the control mechanism includes a hollow sleeve fixedly connected to both sides of the electric clamp, the hollow sleeves are slidably connected with mounting blocks, the mounting blocks are fixedly connected to a No. 1 spur rack on one side close to the electric clamp, a through groove is provided on the side of the hollow sleeve close to the electric clamp, a No. 2 spur rack is fixedly connected to the side of the electric clamp close to the through groove, and the No. 2 spur rack passes through the through groove, a gear is rotatably connected to the inside of the hollow sleeve, one side of the gear is meshed with the No. 1 spur rack, and the other side of the gear is meshed with the No. 2 spur rack.

[0012] As a further improvement of the technical solution, the receiving mechanism includes fixed rods respectively fixedly connected to the inside of the two mounting blocks, and the outer walls of the fixed rods are rotatably connected to movable rods.

[0013] As a further improvement of the technical solution, a rotating ring is fixedly connected to one side of the receiving plate, a rotating ring is fixedly connected to one side of the movable rod, and the rotating ring is rotatably connected to the fixed rod.

[0014] As a further improvement of the technical solution, an L-shaped plate is fixedly connected to the bottom of the mounting block, a No. 1 return spring is fixedly connected to the top of the L-shaped plate, and the side of the No. 1 return spring away from the L-shaped plate is fixedly connected to one side of the rotating ring.

[0015] As a further improvement of the technical solution, the outer wall of the movable rod is slidably connected to a rectangular rod, and a connecting plate is fixedly connected to a side of the rectangular rod close to the electric clamp.

[0016] As a further improvement of the present technical solution, a groove is provided on one side of the movable rod inside the rectangular rod, a telescopic rod is fixedly connected in the groove, and a side of the telescopic rod away from the movable rod is fixedly connected to one side of the rectangular rod, and a No. 2 return spring is sleeved on the outer wall of the telescopic rod.

[0017] As a further improvement of the technical solution, a positioning plate is fixedly connected to the front side of the connecting plate, and a protective plate is slidably connected inside the positioning plate.

[0018] As a further improvement of the technical solution, a pressure plate is fixedly connected to the fixed plate, a plurality of No. 3 return springs are fixedly connected to the inner wall of the positioning plate, and the side of the No. 3 return spring away from the positioning plate is fixedly connected to one side of the protective plate.

[0019] As a further improvement of the technical solution, a sliding groove is provided on the inner wall of the hollow sleeve, a sliding block is slidably connected in the sliding groove, and a side of the sliding block away from the sliding groove is fixedly connected to the outer wall of the mounting block.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the lifting method of the pipe forging for quenching treatment for the pressure vessel, when the electric clamp clamps the forging, the control mechanism drives the receiving mechanism to move, so that the two receiving mechanisms are in a parallel vertical state to avoid interference with the clamping of the electric clamp. In the process of the electric clamp clamping the forging and moving it to the quenching pool, the control mechanism drives the receiving mechanism to move, so that the two receiving mechanisms are in a V-shaped state to shield the bottom of the forging, effectively preventing the molten beads from falling and scalding the operator and equipment.

[0022] 2. In the lifting method of the pipe forging for quenching treatment for the pressure vessel, when the forging is immersed in the quenching pool, the hydraulic rod is started to move up and down, and the control mechanism is cooperated to drive the receiving mechanism to move back and forth, thereby disturbing the quenching liquid inside the quenching pool, causing the quenching liquid to flow, further improving the balance of the quenching liquid temperature, and improving the quenching efficiency of the device; and when the forging is immersed in the quenching pool, the receiving mechanism is in a vertical state, so the receiving mechanism can shield the two sides and the front side of the quenching pool, effectively preventing the boiling quenching liquid from flying out of the quenching pool and scalding the operator, thereby improving the use effect of the device.

[0023] 3. In the lifting method of the quenching treatment of the pipe forging for the pressure vessel, by starting the hydraulic rod to move up and down, cooperating with the control mechanism and the receiving mechanism, under the action of the No. 1 reset spring, the connecting plate is driven to move back and forth, thereby disturbing the quenching liquid inside the quenching pool, realizing the flow of the quenching liquid, making the temperature of the quenching liquid more balanced, and improving the quenching efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 It is a first cross-sectional structural diagram of the present invention;

[0026] Figure 3 It is a rear view structural diagram of the present invention;

[0027] Figure 4 It is a cross-sectional structural diagram of the positioning plate of the present invention;

[0028] Figure 5 is a second cross-sectional view of the present invention;

[0029] Figure 6 It is a structural diagram of the control mechanism of the present invention;

[0030] Figure 7 It is a side sectional structural diagram of the present invention;

[0031] Figure 8 It is an enlarged structural diagram of A of the present invention;

[0032] Fig. 9 It is a cross-sectional structural diagram of the movable rod of the present invention.

[0033] The meaning of each number in the figure is:

[0034] 100. Bracket; 101. Moving plate; 102. Hydraulic rod; 103. Electric gripper; 200. Control mechanism; 201. Hollow sleeve; 202. Mounting block; 203. Spur rack No. 1; 204. Spur rack No. 2; 205. Gear; 300. Receiving mechanism; 301. Fixed rod; 302. Movable rod; 40. Rotating ring; 41. L-shaped plate; 42. Return spring No. 1; 50. Rectangular rod; 51. Connecting plate; 52. Telescopic rod; 53. Return spring No. 2; 60. Positioning plate; 61. Protective plate; 62. Return spring No. 3; 70. Slider. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 9 As shown, this embodiment provides a lifting method for a pipe forging for a pressure vessel during quenching treatment, comprising the following steps:

[0037] S1. Move and clamp the pipe forging to be quenched by the lifting mechanism;

[0038] S2. When the pipe forging to be quenched is moved to the quenching area, the pipe forging is immersed in the quenching area for quenching treatment;

[0039] S3. After the quenching of the pipe forging is completed, it is transferred out of the quenching area, wherein:

[0040] The lifting mechanism includes a bracket 100, and a moving plate 101 is slidably provided inside the bracket 100. The lifting mechanism is composed of a screw, a driving motor, a connecting block, etc. The screw is rotatably connected to the inner wall of the bracket 100. By starting the driving motor, the screw is driven to rotate, thereby driving the moving block to move, thereby driving the moving plate 101 to move, and realizing driving the forging to move from the heat treatment area to the quenching area. A hydraulic rod 102 is fixedly connected to the bottom of the moving plate 101. The output end of the hydraulic rod 102 is provided with an electric clamp 103 for clamping the forging to move from the forging area to the quenching area. The electric clamp 103 is composed of a control motor and a gripper, etc. The control motor is driven to drive the gripper to move and clamp the forging. Two control mechanisms 200 are provided on the outer wall of the electric clamp 103, and a receiving mechanism 300 is provided inside the two control mechanisms 200.

[0041] When the output end of the hydraulic rod 102 drives the electric clamp 103 to move downward to the outside of the forging for clamping, the control mechanism 200 drives the two receiving mechanisms 300 to be parallel to each other and located on the outside of the forging to prevent the receiving mechanisms 300 from interfering with the operation of the electric clamp 103 when the electric clamp 103 clamps the forging. When the output end of the hydraulic rod 102 drives the electric clamp 103 to move upward to the quenching area, the control mechanism 200 drives the two receiving mechanisms 300 to be V-shaped and located below the forging to receive the molten beads dropped from the bottom of the forging. When the forging is quenched, the receiving mechanisms 300 reciprocately disturb the quenching liquid, so that the temperature of the quenching liquid inside the quenching pool is more balanced, thereby improving the quenching efficiency of the device.

[0042] In the existing technical system, most of the methods for quenching butt-jointed pipe forgings are to clamp the forgings with a hoist and then place the pipe forgings in clean water for water cooling. However, during the clamping process of the forgings after heat treatment, the molten beads on the surface of the forgings will fall from the surface of the forgings, thereby posing a risk of scalding operators and equipment. Moreover, most quenching boxes are open-topped. When the forgings are placed in clean water for immersion, the boiling water splashes outside the quenching box, thereby posing a risk of scalding operators. Moreover, the clean water inside most quenching boxes flows slowly, thereby failing to ensure uniform water temperature inside the quenching box when quenching the forgings. , thereby reducing the efficiency of quenching, so by setting the control mechanism 200 and the receiving mechanism 300, when the electric clamp 103 clamps the forging, the control mechanism 200 drives the receiving mechanism 300 to move, so that the two receiving mechanisms 300 are in a parallel vertical state, avoiding interference with the clamping of the electric clamp 103, and in the process of the electric clamp 103 clamping the forging and moving it to the quenching pool, the control mechanism 200 drives the receiving mechanism 300 to move, so that the two receiving mechanisms 300 are in a V-shaped state, shielding the bottom of the forging, effectively preventing the molten beads from falling and scalding the operator and equipment;

[0043] When the forging is immersed in the quenching pool, the hydraulic rod 102 is started to move up and down, and the control mechanism 200 is cooperated to drive the receiving mechanism 300 to move back and forth, thereby disturbing the quenching liquid inside the quenching pool, causing the quenching liquid to flow, further improving the balance of the quenching liquid temperature, and improving the quenching efficiency of the device; and when the forging is immersed in the quenching pool, the receiving mechanism 300 is in a vertical state, so the receiving mechanism 300 can shield the two sides and the front side of the quenching pool, effectively preventing the boiling quenching liquid from flying out of the quenching pool and scalding the operator, thereby improving the use effect of the device.

[0044] In order to drive the receiving mechanism 300 to move and change the shape, Figure 5 and Figure 6 As shown, the control mechanism 200 includes a hollow sleeve 201 fixedly connected to both sides of the electric clamp 103, a mounting block 202 is slidably connected inside the hollow sleeve 201, a first spur rack 203 is fixedly connected to the side of the mounting block 202 close to the electric clamp 103, a through slot is provided on the side of the hollow sleeve 201 close to the electric clamp 103, a second spur rack 204 is fixedly connected to the side of the electric clamp 103 close to the through slot, and the second spur rack 204 passes through the through slot. When the hydraulic rod 102 drives the electric clamp 103 to move, it can drive the No. 2 spur rack 204 to move. The hollow sleeve 201 is internally rotatably connected with a gear 205. One side of the gear 205 is meshed and connected with the No. 1 spur rack 203, and the other side of the gear 205 is meshed and connected with the No. 2 spur rack 204. The No. 2 spur rack 204 moves, driving the gear 205 to mesh and rotate, thereby driving the No. 1 spur rack 203 to move, and then driving the mounting block 202 to move.

[0045] Considering the need to drive the receiving mechanism 300 to move, Figure 5 As shown, the receiving mechanism 300 includes fixed rods 301 respectively fixedly connected to the inside of two mounting blocks 202. When the mounting blocks 202 move, the fixed rods 301 are driven to move. The outer walls of the fixed rods 301 are rotatably connected to the movable rods 302. The fixed rods 301 move, thereby driving the movable rods 302 to move.

[0046] Considering that the movable rod 302 needs to be reset after moving, such as Figure 8 As shown, a rotating ring 40 is fixedly connected to one side of the movable rod 302, and the rotating ring 40 is rotatably connected to the fixed rod 301. When the movable rod 302 is squeezed, the movable rod 302 is driven to rotate on the outer wall of the fixed rod 301, thereby driving the rotating ring 40 to rotate.

[0047] In order to drive the rotating ring 40 to reset, the movement and reset are as follows: Figure 8As shown, an L-shaped plate 41 is fixedly connected to the bottom of the mounting block 202, and a No. 1 return spring 42 is fixedly connected to the top of the L-shaped plate 41, and the side of the No. 1 return spring 42 away from the L-shaped plate 41 is fixedly connected to one side of the rotating ring 40. The rotating ring 40 moves and pulls the No. 1 return spring 42, causing the No. 1 return spring 42 to deform. Subsequently, when the hydraulic rod 102 drives the electric clamp 103 to move upward, it drives the No. 2 spur rack 204 and the gear 205 to reset and move, thereby driving the No. 1 spur rack 203 to move downward, and then drives the mounting block 202 and the fixed rod 301 to move downward. The fixed rod 301 moves downward, driving the movable rod 302 to move downward. At this time, under the force of the No. 1 return spring 42 to restore the deformation, it drives the rotating ring 40 to reset and move, thereby driving the movable rod 302 to reset and move.

[0048] In order to avoid catching the molten beads falling from the bottom of the forging, Fig. 9 As shown, the outer wall of the movable rod 302 is slidably connected with a rectangular rod 50, and a connecting plate 51 is fixedly connected to the side of the rectangular rod 50 close to the electric clamp 103. When the movable rod 302 moves, the connecting plate 51 is driven to move. After the clamping is completed, the hydraulic rod 102 is started to move upward, driving the electric clamp 103 to move upward, thereby driving the No. 2 spur rack 204, the gear 205 and the No. 1 spur rack 203 to reset and move, thereby driving the mounting block 202 to move downward. Under the force of the No. 1 reset spring 42 to restore the deformation, the rotating ring 40 is driven to reset and move, thereby pulling the movable rod 302 to reset and rotate, and then driving the rectangular rod 50 and the connecting plate 51 to reset and move, so that the two connecting plates 51 gradually move and fit together, so that when the electric clamp 103 clamps the forging to be quenched and moves to the quenching area, The two connecting plates 51 are V-shaped, which can receive the molten beads falling from the bottom of the forging to prevent the molten beads from scattering and causing damage to operators and equipment; and when the hydraulic rod 102 drives the forging to be immersed in the quenching pool and the forging is quenched, the hydraulic rod 102 is started to move up and down, and the control mechanism 200, the receiving mechanism 300 and the No. 1 reset spring 42 are cooperated to drive the connecting plate 51 to move back and forth, thereby disturbing the quenching liquid inside the quenching pool, realizing the flow of the quenching liquid, and improving the quenching efficiency of the device; and when the electric clamp 103 drives the forging to be immersed in the quenching pool, the connecting plate 51 is in a horizontal and vertical state, so the connecting plate 51 can shield both sides of the quenching pool to prevent the boiling quenching liquid from flying out of the quenching pool, thereby improving the use effect of the device.

[0049] In order to better fit the two connecting plates 51, the molten beads are received, such as Fig. 9As shown, a groove is provided on one side of the movable rod 302 located inside the rectangular rod 50, and a telescopic rod 52 is fixedly connected in the groove, and the side of the telescopic rod 52 away from the movable rod 302 is fixedly connected to one side of the rectangular rod 50, and a No. 2 return spring 53 is sleeved on the outer wall of the telescopic rod 52. When the movable rod 302 is reset and moves, and rotates toward the central axis of the hydraulic rod 102, the two connecting plates 51 gradually fit together and are squeezed, thereby driving the two rectangular rods 50 to slide on the outer wall of the movable rod 302, and then driving the telescopic rod 52 and the No. 2 return spring 53 to contract. Subsequently, under the force of the No. 2 return spring 53 to restore the deformation, the telescopic rod 52, the rectangular rod 50 and the connecting plate 51 can be driven to reset and move.

[0050] In order to prevent the quenching liquid from flying out of the quenching tank, Figure 4 As shown, a positioning plate 60 is fixedly connected to the front side of the connecting plate 51, and a protective plate 61 is slidably connected inside the positioning plate 60. When the electric clamp 103 drives the forging to be immersed in the quenching pool, the connecting plate 51 is in a horizontal state and parallel to each other. At this time, the two protective plates 61 are in a parallel state, which can shield the front side of the quenching pool to prevent the boiling quenching liquid from flying out of the quenching pool and scalding the operator, thereby improving the use effect of the device.

[0051] In order to drive the protective plate 61 to reset and move, Figure 4 As shown, a plurality of No. 3 return springs 62 are fixedly connected to the inner wall of the positioning plate 60, and the side of the No. 3 return spring 62 away from the positioning plate 60 is fixedly connected to one side of the protective plate 61. Under the force of the No. 3 return spring 62 to restore the deformation, the protective plate 61 is driven to return and move, so that the protective plate 61 can shield the front side of the quenching pool to prevent the boiling quenching liquid from flying out of the quenching pool and scalding the operator, thereby improving the use effect of the device.

[0052] In order to improve the stability of the mounting block 202 when it moves, Figure 5 As shown, a sliding groove is provided on the inner wall of the hollow sleeve 201, and a slider 70 is slidably connected in the sliding groove, and the side of the slider 70 away from the sliding groove is fixedly connected to the outer wall of the mounting block 202. When the mounting block 202 moves, the slider 70 is driven to slide in the sliding groove. The slider 70 is provided to provide stability when the mounting block 202 moves.

[0053] Working principle: when it is necessary to clamp the forging to be quenched, the hydraulic rod 102 is started to move downward, driving the electric clamp 103 to move downward, thereby driving the No. 2 spur rack 204 to move downward, and then driving the gear 205 to mesh and rotate. The gear 205 rotates, driving the No. 2 spur rack 204 to move upward, thereby driving the mounting block 202 inside the hollow sleeve 201, and then moving upward, thereby driving the movable rod 302 to move upward. The movable rod 302 moves upward, cooperates with the telescopic rod 52, and drives the rectangular rod 50 to move, thereby driving the connecting plate 51 to move upward. At this time, the connecting plate 51 and the hollow sleeve 201 are squeezed, and the force generated drives the movable rod 302 to rotate on the outer wall of the fixed rod 301, thereby driving the rotating ring 40 to rotate, and then pulling the No. 1 return spring 42, causing the No. 1 return spring 42 to deform. When the electric clamp 103 moves above the forging to be quenched, this When the connecting plate 51 is received into the hollow sleeve 201, the electric clamp 103 is then started to clamp the forging to be quenched; after the clamping is completed, the hydraulic rod 102 is started to move upward, driving the electric clamp 103 to move upward, thereby driving the No. 2 spur rack 204, the gear 205 and the No. 1 spur rack 203 to reset and move, thereby driving the mounting block 202 to move downward, and under the force of the No. 1 reset spring 42 to restore the deformation, the rotating ring 40 is driven to reset and move, thereby pulling the movable rod 302 to reset and rotate, and then driving the rectangular rod 50 and the connecting plate 51 to reset and move, so that the two connecting plates 51 move toward the central axis of the hydraulic rod 102 and gradually fit together, so that when the electric clamp 103 clamps the forging to be quenched and moves to the quenching area, the two connecting plates 51 are in a V shape, which can receive the molten beads falling from the bottom of the forging to prevent the molten beads from scattering everywhere and causing damage to operators and equipment;

[0054] When the electric clamp 103 moves to the top of the quenching area, the hydraulic rod 102 is started to drive the forging to be immersed in the quenching pool to quench the forging. When the hydraulic rod 102 moves downward, the connecting plate 51 moves toward the inside of the hollow sleeve 201 according to the above principle. By starting the hydraulic rod 102 to move up and down, the control mechanism 200 and the receiving mechanism 300 are coordinated, and the connecting plate 51 is driven to move back and forth under the action of the No. 1 return spring 42, thereby disturbing the quenching liquid inside the quenching pool, realizing the flow of the quenching liquid, and improving the quenching efficiency of the device.

[0055] And when the connecting plate 51 is in a V-shape, the two protective plates 61 move close to each other and squeeze each other, driving the protective plate 61 to move toward the inside of the positioning plate 60, thereby squeezing the No. 3 reset spring 62. When the electric clamp 103 drives the forging to immerse into the quenching pool, the two connecting plates 51 are retracted into the hollow sleeve 201. Under the force of the No. 3 reset spring 62 to restore the deformation, the protective plate 61 is driven to reset and move, so that the protective plate 61 can block the front side of the quenching pool, and when the connecting plate 51 is retracted into the hollow sleeve 201, due to the large size of the connecting plate 51, both sides of the quenching pool can be blocked to prevent the boiling quenching liquid from splashing out from the inside of the quenching pool, thereby reducing the occurrence of burns to operators and improving the use effect of the device.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lifting method for a pipe forging for a pressure vessel during quenching treatment, characterized in that: The following steps are involved: S1. Move and clamp the pipe forging to be quenched by the lifting mechanism; S2. When the pipe forging to be quenched is moved to the quenching area, the pipe forging is immersed in the quenching area for quenching treatment; S3. After the quenching of the pipe forging is completed, it is transferred out of the quenching area, wherein: The lifting mechanism comprises a bracket (100), a movable plate (101) is slidably provided inside the bracket (100), a hydraulic rod (102) is fixedly connected to the bottom of the movable plate (101), an output end of the hydraulic rod (102) is provided with an electric clamp (103) for clamping a forging and moving it from a forging area to a quenching area, two control mechanisms (200) are provided on the outer wall of the electric clamp (103), and a receiving mechanism (300) is provided inside the two control mechanisms (200); When the output end of the hydraulic rod (102) drives the electric clamp (103) to move downward to the outside of the forging for clamping, the control mechanism (200) drives the two receiving mechanisms (300) to be parallel to each other and located outside the forging; when the output end of the hydraulic rod (102) drives the electric clamp (103) to move upward to the quenching area, the control mechanism (200) drives the two receiving mechanisms (300) to be V-shaped and located below the forging; when the forging is quenched, the receiving mechanisms (300) reciprocate to disturb the quenching liquid; The control mechanism (200) comprises a hollow sleeve (201) fixedly connected to both sides of the electric clamp (103), the hollow sleeve (201) is slidably connected with a mounting block (202), a side of the mounting block (202) close to the electric clamp (103) is fixedly connected with a first spur rack (203), a side of the hollow sleeve (201) close to the electric clamp (103) is provided with a through slot, a side of the electric clamp (103) close to the through slot is fixedly connected with a second spur rack (204), and the second spur rack (204) passes through the through slot, a gear (205) is rotatably connected to the hollow sleeve (201), one side of the gear (205) is meshedly connected with the first spur rack (203), and the other side of the gear (205) is meshedly connected with the second spur rack (204); The receiving mechanism (300) comprises fixed rods (301) respectively fixedly connected to the inside of the two mounting blocks (202), and the outer walls of the fixed rods (301) are rotatably connected to movable rods (302); A rotating ring (40) is fixedly connected to one side of the movable rod (302), and the rotating ring (40) is rotatably connected to the fixed rod (301); An L-shaped plate (41) is fixedly connected to the bottom of the mounting block (202), a No. 1 return spring (42) is fixedly connected to the top of the L-shaped plate (41), and a side of the No. 1 return spring (42) away from the L-shaped plate (41) is fixedly connected to a side of the rotating ring (40).

2. The lifting method for the quenching treatment of the pipe forging for a pressure vessel according to claim 1, characterized in that: The outer wall of the movable rod (302) is slidably connected to a rectangular rod (50), and a connecting plate (51) is fixedly connected to a side of the rectangular rod (50) close to the electric clamp (103).

3. The method for lifting a pipe forging for a pressure vessel during quenching treatment according to claim 2, characterized in that: A groove is provided on one side of the movable rod (302) located inside the rectangular rod (50), a telescopic rod (52) is fixedly connected in the groove, and a side of the telescopic rod (52) away from the movable rod (302) is fixedly connected to a side of the rectangular rod (50), and a No. 2 return spring (53) is sleeved on the outer wall of the telescopic rod (52).

4. The method for lifting a pipe forging for a pressure vessel during quenching treatment according to claim 2, characterized in that: A positioning plate (60) is fixedly connected to the front side of the connection plate (51), and a protective plate (61) is slidably connected inside the positioning plate (60).

5. The method for lifting a pipe forging for a pressure vessel during quenching treatment according to claim 4, characterized in that: A plurality of No. 3 return springs (62) are fixedly connected to the inner wall of the positioning plate (60), and the side of the No. 3 return springs (62) away from the positioning plate (60) is fixedly connected to one side of the protective plate (61).

6. The method for lifting a pipe forging for a pressure vessel during quenching treatment according to claim 1, characterized in that: The inner wall of the hollow sleeve (201) is provided with a sliding groove, a sliding block (70) is slidably connected in the sliding groove, and a side of the sliding block (70) away from the sliding groove is fixedly connected to the outer wall of the mounting block (202).

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