A large flange forging equipment and forging method

Abstract

The present invention relates to the technical field of flange forging equipment, and discloses a large flange forging equipment and a forging method, which includes a supporting base, a forging hammer driven by hydraulic pressure is arranged on the supporting base, a forging support plate is arranged at the upper end of the supporting base, a forging top plate is slidably arranged on the forging support plate, a displacement mechanism for driving the forging top plate to rotate eccentrically is arranged on the supporting base, a protective purification mechanism for avoiding the splashing of impurities during the forging process by air flow is slidably arranged outside the supporting base, a pulse air supply mechanism for intermittently supplying gas to the protective purification mechanism as the positioning grooved wheel rotates is arranged inside the supporting base, and a plurality of gravity centering mechanisms for centering the flange are equidistantly arranged along the circumferential direction on the forging top plate. The present invention does not need to manually hold a rod to adjust the position of the forging flange raw material, has high operation efficiency, improves the protection ability for operators, improves the forging quality, and at the same time improves the protection ability for the forging hammer.

Description

Technical Field

[0001] The present invention relates to the technical field of flange forging equipment, and specifically refers to a large flange forging equipment and a forging method. Background Art

[0002] When forging a large flange, by applying a huge pressure to the metal blank, the grains inside the metal are refined and homogenized. This dense organizational structure significantly improves the strength and toughness of the large flange, enabling the flange to withstand higher pressures and stresses. Therefore, large forged flanges are widely used in multiple industries such as oil and gas, chemical industry, and electric power.

[0003] The large flange forging equipment currently in use is usually composed of a forging hammer driven by different powers (usually pneumatic or hydraulic drive) and a supporting plate. During use, the operator places the forging flange raw material on the supporting plate, and the forging hammer moves up and down to forge the forging flange raw material. Since it is necessary to forge different positions of the forging flange raw material, the currently commonly used method in the industry is to manually hold a self-made rod-shaped tool to move the forging flange raw material, so that the forging hammer can contact different positions of the forging flange raw material for forging. This operation method requires multiple people to cooperate, with low operation efficiency. Moreover, since the operator needs to be close to the high-temperature forging flange raw material, during the forging process, impurities (such as various components of the raw material oxide layer) generated on the surface of the forging flange raw material are likely to splash, polluting the operation site and having an adverse impact on the physical health of the operator. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a large flange forging equipment and a forging method.

[0005] To solve the above technical problems, the technical solution provided by the present invention is: a large flange forging device, including a supporting base, on which a hydraulically driven forging hammer is provided. A forging support plate is provided at the upper end of the supporting base, and a forging top plate is slidably arranged on the forging support plate. A displacement mechanism for driving the forging top plate to rotate is provided on the supporting base. The displacement mechanism includes a support frame arranged in the supporting base. A positioning grooved wheel is rotatably provided at the upper end of the support frame. A positioning chute is provided at the upper end of the positioning grooved wheel. A positioning slider is slidably arranged in the positioning chute. Symmetrically arranged positioning slide columns that are slidably matched with the forging top plate are provided at the upper end of the positioning slider. A power mechanism for driving the positioning grooved wheel to rotate circumferentially and adjusting the distance between the positioning slider and the center of the positioning grooved wheel during the rotation of the positioning grooved wheel is provided on the support frame. A protective purification mechanism for avoiding the splashing of impurities during the forging process by airflow is slidably arranged outside the supporting base. A pulse air supply mechanism for intermittently supplying gas to the protective purification mechanism as the positioning grooved wheel rotates is provided in the supporting base. A plurality of gravity centering mechanisms for centering the flange are equidistantly arranged along the circumferential direction on the forging top plate.

[0006] As an improvement, the power mechanism includes a driving motor arranged on one side of the support frame. A primary grooved wheel and a secondary grooved wheel are provided at the output end of the driving motor. The secondary grooved wheel is connected to the positioning grooved wheel by a belt. The primary grooved wheel drives the pulse air supply mechanism to supply gas to the protective purification mechanism.

[0007] As an improvement, an adjusting rotating column is rotatably arranged on the support frame. An adjusting bevel gear and a mating bevel gear are respectively provided at both ends of the adjusting rotating column. A synchronous toothed ring is rotatably arranged on the support frame. A synchronous rod is provided inside the synchronous toothed ring. A synchronous bevel gear meshing with the mating bevel gear is rotatably arranged on the synchronous rod. A power bevel gear meshing with the synchronous bevel gear is rotatably arranged on the support frame. A synchronous rotating column is rotatably arranged on one side of the support frame. A synchronous gear and a mating gear are respectively provided at both ends of the synchronous rotating column. The mating gear meshes with the synchronous toothed ring. A positioning gear meshing with the synchronous gear is provided at the lower end of the positioning grooved wheel. A positioning screw threadedly engaged with the positioning slider is rotatably arranged in the positioning chute. A positioning bevel gear meshing with the adjusting bevel gear is provided at one end of the positioning screw. When the power bevel gear is stationary, the adjusting bevel gear and the positioning grooved wheel rotate at the same angular velocity.

[0008] As an improvement, the protective purification mechanism includes a protective cover plate slidably arranged outside the supporting base. The protective cover plate is driven by an electric push rod to slide along the axis direction of the supporting base. An air storage chamber is provided at the lower end of the protective cover plate. The air storage chamber is communicated with the pulse air supply mechanism. A purification air pipe is communicated with the air storage chamber. A purification nozzle facing the center of the protective cover plate is provided on the purification air pipe. A protective ring plate is provided at the top end of the protective cover plate.

[0009] As an improvement, the pulse air supply mechanism includes an air collecting barrel arranged in a supporting base, the air collecting barrel is connected to the air storage bin, a one-way air inlet valve is connected to the lower end of the air collecting barrel, and a sealing piston is provided in the air collecting barrel for sealing sliding movement, which reciprocates up and down in a straight line as the first-stage groove wheel rotates.

[0010] As an improvement, the sealing piston extends into the gas collecting barrel at one end and is sleeved with a pulse spring. The gas collecting barrel is provided with a fixed support plate at the upper end. A rotating bracket is rotatably provided on one side of the fixed support plate. A rotating lever is provided on the rotating bracket. A rotating crank that rotates with the sealing piston is rotatably provided at one end of the rotating bracket. A driving plate that intermittently cooperates with the rotating lever is rotatably provided on the rotating bracket. The driving plate drives the rotating lever to drive the rotating bracket to rotate. The driving plate is driven by a primary groove wheel transmission.

[0011] As an improvement, the gravity centering mechanism includes centering brackets equidistantly arranged along the circumferential direction of the forging top plate, and no less than four groups of centering brackets are arranged. Centering arms are symmetrically rotatable on multiple groups of centering brackets, and centering gear rings are provided on the centering arms to cooperate with adjacent centering arms. Multiple groups of centering grooves are provided on one centering arm, and a centering plate is provided on the other centering arm. Centering pins that cooperate with the centering grooves are connected to the centering brackets by ropes.

[0012] As an improvement, the centering bracket is rotatably matched with the forged top plate, a centering slide column is slidably provided on the forged top plate, the centering slide column passes through the forged top plate, an adjustment bracket is provided at the lower end of the centering slide column and the centering bracket is slidably matched with the centering bracket, and a centering spring connected to the adjustment bracket is provided on the forged top plate.

[0013] A large flange forging method, using the large flange forging equipment, the steps are as follows:

[0014] Step 1: Drive the protection and purification mechanism downward until the protection and purification mechanism and the forging top plate are at the same level, and put the forging flange raw material into the forging top plate;

[0015] Step 2: The gravity centering mechanism centers the forged flange raw material, and drives the protection and purification mechanism to move upward to shield the forged flange raw material;

[0016] Step 3: Drive the forging hammer to move up and down to forge the forged flange raw material. During this process, the displacement mechanism is driven to move by the power mechanism, and the displacement mechanism is rotated by the forging top plate. During the rotation process, the rotation trajectory of the forging top plate is adjusted so that the forging hammer can forge the flange raw material.

[0017] Step 4: The pulse gas supply mechanism intermittently supplies gas to the protective purification mechanism, and the protective purification mechanism sprays gas to blow off the flange raw material and the raw material adhering to the forging hammer during the forging process.

[0018] The beneficial effects of the present invention compared with the prior art are as follows: The displacement mechanism drives the forging top plate to drive the forging flange raw material to rotate, and forging operations are carried out on different positions of the forging flange raw material. There is no need to manually hold a rod to adjust the position of the forging flange raw material. While the operation efficiency is relatively high, the operators are kept away from the forging site, improving the protection ability for the operators. The pulse air supply mechanism intermittently supplies air to the protection and purification mechanism as it moves with the displacement mechanism. The protection and purification mechanism blows off the impurities generated on the surface of the forging flange raw material during the forging process and the impurities adhered to the forging hammer through the airflow, achieving the cleaning of impurities, improving the forging quality and the protection ability for the forging hammer at the same time. Specifically:

[0019] 1. When the power bevel gear rotates, there is a difference in the angular velocity of the adjusting bevel gear and the positioning grooved wheel during rotation. The adjusting bevel gear drives the positioning bevel gear meshing with it to rotate, and the positioning screw drives the positioning slider to slide along the positioning chute, realizing the adjustment of the rotation trajectory of the forging top plate. Without stopping the machine, the position of the forging flange raw material can be adjusted, making the forging operation more continuous and improving the forging operation efficiency;

[0020] 2. When the electric push rod extends, the electric push rod drives the protective cover plate to move upward to shield the flange forging raw material, preventing the impurities generated on the surface of the flange forging raw material from splashing out of the protective cover plate, protecting the working site environment and the physical health of the operators at the same time. The gas is ejected from the purification nozzle through the purification air pipe, thereby cleaning the impurities. After the forging is completed, the electric push rod drives the protective cover plate to move downward until the upper end surface of the protective cover plate is flush with the forging top plate. At this time, the protective cover plate does not shield the forging flange raw material, facilitating the transfer of the forged forging flange raw material out of the forging top plate;

[0021] 3. The pulse air supply mechanism realizes the purpose of intermittently and quickly transporting the gas in the gas collection barrel to the gas storage bin without setting power elements through the linkage structure, simplifies the structure, and reduces the maintenance and repair costs of the device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of a large flange forging device and forging method of the present invention.

[0023] Figure 2 is an exploded view of a large flange forging device and forging method of the present invention.

[0024] Figure 3 is a structural schematic diagram of the displacement mechanism of a large flange forging device and forging method of the present invention.

[0025] Figure 4 is an exploded view of the displacement mechanism of a large flange forging device and forging method of the present invention.

[0026] Figure 5 It is a cross-sectional view of the displacement mechanism of a large flange forging equipment and forging method of the present invention.

[0027] Figure 6 It is a schematic structural diagram of the protection and purification mechanism of a large flange forging equipment and forging method of the present invention.

[0028] Figure 7 It is a schematic structural diagram of the pulse gas supply mechanism of a large flange forging equipment and forging method of the present invention.

[0029] Figure 8 It is an exploded view of the pulse gas supply mechanism of a large flange forging equipment and forging method of the present invention.

[0030] Figure 9 It is a cross-sectional view of the pulse gas supply mechanism of a large flange forging equipment and forging method of the present invention.

[0031] Figure 10 It is an exploded view of the gravity centering mechanism of a large flange forging equipment and forging method of the present invention.

[0032] Figure 11 It is a cross-sectional view of the gravity centering mechanism of a large flange forging equipment and forging method of the present invention.

[0033] Figure 12 It is a schematic structural diagram of a large flange forging equipment and forging method of the present invention in a non-operating state.

[0034] As shown in the figure: 1. Support base; 11. Forged top plate; 12. Forging hammer; 13. Forging support plate; 2. Displacement mechanism; 21. Support frame; 22. Positioning grooved pulley; 221. Positioning gear; 222. Positioning chute; 223. Positioning slider; 224. Positioning screw; 225. Positioning bevel gear; 226. Positioning slide column; 23. Adjusting rotating column; 231. Adjusting bevel gear; 232. Matching bevel gear; 24. Synchronous toothed ring; 241. Synchronous rod; 242. Synchronous bevel gear; 25. Power bevel gear; 26. Synchronous rotating column; 261. Synchronous gear; 262. Matching gear; 27. Driving motor; 271. First-stage grooved pulley; 272. Second-stage grooved pulley; 3. Protection and purification mechanism; 31. Protective cover plate; 32. Air storage chamber; 33. Purification air pipe; 331. Purification nozzle; 332. Protective ring plate; 4. Pulse air supply mechanism; 41. Air collecting barrel; 411. One-way air inlet valve; 42. Sealing piston; 421. Pulse spring; 43. Rotating bracket; 431. Rotating lever; 432. Rotating crank; 44. Driving dial; 441. Driving grooved pulley; 45. Transmission grooved pulley; 451. Transmission bevel gear; 452. Pulse bevel gear; 453. Pulse grooved pulley; 46. Fixed support plate; 5. Gravity centering mechanism; 51. Centering bracket; 52. Centering rotating arm; 521. Centering toothed ring; 522. Centering groove; 523. Centering dial; 524. Centering pin; 53. Centering slide column; 531. Adjusting bracket; 532. Centering spring. Detailed implementation mode

[0035] The present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Combined with the attached Figure 1 and the attached Figure 2 and the attached Figure 3 Combined with the attached Figure 12 As shown in the figure, a large flange forging device includes a support base 1. A hydraulically driven forging hammer 12 is provided on the support base 1. The support base 1 is a hollow barrel-shaped structure with an opening at the lower end and a forging support plate 13 at the upper end. Multiple through holes for impurities to fall are formed on the forging support plate 13. A forging top plate 11 is slidably arranged on the forging support plate 13. A displacement mechanism 2 for driving the forging top plate 11 to rotate is provided on the support base 1. A protection and purification mechanism 3 for avoiding the splashing of impurities during forging by airflow is slidably arranged outside the support base 1. A pulse air supply mechanism 4 for intermittently supplying gas to the protection and purification mechanism 3 as the positioning grooved pulley 22 rotates is arranged inside the support base 1. Multiple gravity centering mechanisms 5 for centering the flange are equidistantly arranged along the circumferential direction on the forging top plate 11.

[0037] Working principle of the present invention: The forged flange blank after cutting is heated to the forging temperature to form the forging flange raw material. The forging flange raw material is placed on the forging top plate 11, and the displacement mechanism 2 drives the forging top plate 11 to rotate. The forging top plate 11 drives the forging flange raw material to rotate synchronously, increasing the moving range of the forging flange raw material and facilitating the full forging operation on the forging flange raw material. During this process, the forging hammer 12 drops at a fixed position, enabling the forging hammer 12 to cover different positions of the forging flange raw material. Further, the forging hammer 12 can perform forging operations on different positions of the forging flange raw material, without the need to manually hold a rod to adjust the position of the forging flange raw material to perform forging operations on different positions of the forging flange raw material. While the operation efficiency is high, the operating personnel are kept away from the forging site, improving the protection ability for the operating personnel. Even further, the pulse air supply mechanism 4 intermittently supplies air to the protection and purification mechanism 3 as the displacement mechanism 2 moves. The protection and purification mechanism 3 blows off the impurities generated on the surface of the forging flange raw material during the forging process and the impurities adhered to the forging hammer 12 through the airflow, and the impurities enter the support base 1 through the through holes under the action of gravity. The impurities flow out of the support base 1 through the opening at the lower end of the support base 1, realizing the cleaning of the impurities.

[0038] Combined with the attached Figure 3 , the attached Figure 4 , the attached Figure 5 and the attached Figure 11 As shown in the figure, the displacement mechanism 2 includes a support frame 21 arranged in the support base 1. The upper end of the support frame 21 is rotatably provided with a positioning grooved wheel 22. The upper end of the positioning grooved wheel 22 is provided with a positioning chute 222. A positioning slider 223 is slidably arranged in the positioning chute 222. The upper end of the positioning slider 223 is symmetrically provided with positioning slide columns 226 that are slidably matched with the forging top plate 11. The lower end of the forging top plate 11 is provided with a connecting sleeve that is slidably matched with the positioning slide columns 226. The support frame 21 is provided with a power mechanism that drives the positioning grooved wheel 22 to perform circular rotation and adjusts the distance between the positioning slider 223 and the center of the positioning grooved wheel 22 during the rotation of the positioning grooved wheel 22. The power mechanism includes a driving motor 27 arranged on one side of the support frame 21. The output end of the driving motor 27 is provided with a first-stage grooved wheel 271 and a second-stage grooved wheel 272. The second-stage grooved wheel 272 is connected to the positioning grooved wheel 22 by a belt. The first-stage grooved wheel 271 drives the pulse air supply mechanism 4 to supply gas to the protection and purification mechanism 3.

[0039] Working principle of the displacement mechanism 2: The driving motor 27 drives the first-stage sheave 271 and the second-stage sheave 272 to rotate synchronously. The second-stage sheave 272 drives the positioning sheave 22 to rotate through a belt. During the rotation of the positioning sheave 22, the positioning chute 222 and the positioning slider 223 rotate synchronously. The positioning slider 223 drives the forging top plate 11 to rotate through the positioning slide post 226. When the axis of the forging top plate 11 is collinear with the axis of the positioning sheave 22, the forging top plate 11 performs circular rotation. When the axis of the forging top plate 11 driven by the positioning slider 223 through the positioning slide post 226 is not collinear with the axis of the positioning sheave 22, the forging top plate 11 performs eccentric rotation, that is, the forging top plate 11 rotates around the axis of the positioning sheave 22. By adjusting the position of the positioning slider 223, the relative position between the axis of the forging top plate 11 and the axis of the positioning sheave 22 can be adjusted, and further the position of the forging top plate 11 can be adjusted. Since the forging top plate 11 supports the forging flange raw material, the position of the forging flange raw material can be adjusted to achieve the purpose of forging the forging flange raw material at different positions.

[0040] Combined with the attached Figure 3 , attached Figure 4 and attached Figure 5 As shown, an adjusting rotating column 23 is rotatably provided on the support frame 21. An adjusting bevel gear 231 and a mating bevel gear 232 are respectively provided at both ends of the adjusting rotating column 23. A synchronous toothed ring 24 is rotatably provided on the support frame 21. A synchronous rod 241 is provided inside the synchronous toothed ring 24. A synchronous bevel gear 242 meshing with the mating bevel gear 232 is rotatably provided on the synchronous rod 241. A power bevel gear 25 meshing with the synchronous bevel gear 242 is rotatably provided on the support frame 21. The power bevel gear 25 can be directly driven by a motor to perform circular rotation, or a worm gear is provided at the lower end of the power bevel gear 25, and it is driven to rotate by a worm meshing with the worm gear driven by the motor, or the worm is driven by a crank to drive the worm gear to rotate. A synchronous rotating column 26 is rotatably provided on one side of the support frame 21. A synchronous gear 261 and a mating gear 262 are respectively provided at both ends of the synchronous rotating column 26. The mating gear 262 meshes with the synchronous toothed ring 24. A positioning gear 221 meshing with the synchronous gear 261 is provided at the lower end of the positioning sheave 22. A positioning screw 224 in threaded fit with the positioning slider 223 is rotatably provided in the positioning chute 222. A positioning bevel gear 225 meshing with the adjusting bevel gear 231 is provided at one end of the positioning screw 224. When the power bevel gear 25 is stationary, the adjusting bevel gear 231 and the positioning sheave 22 rotate at the same angular velocity.

[0041] The working principle of the driving of the positioning bevel gear 225 by the power bevel gear 25: During the rotation of the positioning grooved pulley 22, the positioning gear 221 rotates synchronously. The positioning gear 221 drives the synchronous rotating column 26 to rotate through the synchronous gear 261 engaged therewith. While the mating gear 262 rotates, it drives the synchronous gear ring 24 engaged therewith to rotate. During the rotation of the synchronous gear ring 24, the synchronous bevel gear 242 is driven by the synchronous rod 241 to revolve around the axis of the synchronous gear ring 24;

[0042] When the power bevel gear 25 remains stationary, since the synchronous bevel gear 242 is engaged with the power bevel gear 25, the synchronous bevel gear 242 rotates around the axis of the synchronous gear ring 24 while rotating on its own axis. The synchronous bevel gear 242 drives the adjusting rotating column 23 to rotate through the mating bevel gear 232 engaged therewith, and the adjusting bevel gear 231 rotates synchronously. At this time, the adjusting bevel gear 231 and the positioning grooved pulley 22 rotate at the same angular velocity. Therefore, the positioning bevel gear 225 engaged with the adjusting bevel gear 231 is in a relatively stationary state. At this time, the positioning screw 224 does not rotate, and the positioning slider 223 does not slide;

[0043] Furthermore, when the power bevel gear 25 is rotated, there is a difference in the angular velocity between the adjusting bevel gear 231 and the positioning grooved pulley 22. At this time, the adjusting bevel gear 231 drives the positioning bevel gear 225 engaged therewith to rotate. The positioning screw 224 rotates and drives the positioning slider 223 in threaded cooperation therewith to slide along the positioning chute 222. The positioning slider 223 drives the forging top plate 11 to move through the positioning sliding column 226, thereby realizing the adjustment of the rotation trajectory of the forging top plate 11. The position of the forging flange raw material can be adjusted without stopping the machine, making the forging operation more continuous and improving the efficiency of the forging operation.

[0044] Combined with Fig. Figure 1 、Fig. Figure 2 、Fig. Figure 6 and Fig. Figure 12 As shown, the protection and purification mechanism 3 includes a protective cover plate 31 slidably arranged outside the supporting base 1. The protective cover plate 31 is provided with a transparent window. The protective cover plate 31 is driven by an electric push rod to slide along the axis direction of the supporting base 1. A gas storage chamber 32 is provided at the lower end of the protective cover plate 31. The gas storage chamber 32 is communicated with the pulse air supply mechanism 4 through a freely telescopic pipeline. A purification air pipe 33 is communicated with the gas storage chamber 32. The purification air pipes 33 are arranged at equal intervals along the circumferential direction of the gas storage chamber 32 and there are no less than six groups. The purification air pipes 33 are provided with purification nozzles 331 facing the center of the protective cover plate 31. A protective ring plate 332 is provided at the top end of the protective cover plate 31.

[0045] Working principle of the protection and purification mechanism 3: When the electric push rod extends, the electric push rod drives the protective cover plate 31 to move upward, and the air storage chamber 32 moves upward synchronously. The protective cover plate 31 shields the flange forging raw material, so as to prevent the impurities generated on the surface of the flange forging raw material from splashing out of the protective cover plate 31 during the forging process. At the same time, the pulse air supply mechanism 4 sends gas into the air storage chamber 32 through a pipeline, and after passing through the purification air pipe 33, it is ejected from the purification nozzle 331. The ejected gas cleans the impurities. After the forging is completed, the electric push rod shortens, and the electric push rod drives the protective cover plate 31 to move downward until the upper end surface of the protective cover plate 31 is flush with the forging top plate 11. At this time, it is convenient to transfer the forged flange raw material out of the forging top plate 11.

[0046] Combined with the attached Figure 2 、attached Figure 6 、attached Figure 7 、attached Figure 8 and attached Figure 9 As shown in, the pulse air supply mechanism 4 includes an air collection barrel 41 arranged in the supporting base 1. The air collection barrel 41 is communicated with the air storage chamber 32. A one-way intake valve 411 is communicated and arranged at the lower end of the air collection barrel 41. The one-way intake valve 411 controls the flow direction of the gas to ensure that the gas can only flow into the air collection barrel 41 and cannot flow out of the air collection barrel 41. It is composed of parts such as a valve body, a valve core, a spring and a seal. This is the current existing technology and will not be elaborated here. A sealing piston 42 that moves up and down linearly reciprocally with the rotation of the first-stage sheave 271 is slidably arranged in the air collection barrel 41 in a sealed manner;

[0047] One end of the sealing piston 42 extending into the air collection barrel 41 is sleeved with a pulse spring 421. A fixed support plate 46 is arranged at the upper end of the air collection barrel 41. A rotating bracket 43 is rotatably arranged on one side of the fixed support plate 46. A rotating dial 431 is arranged on the rotating bracket 43. A rotating crank 432 that rotates in cooperation with the sealing piston 42 is rotatably arranged at one end of the rotating bracket 43. A driving dial 44 that is intermittently matched with the rotating dial 431 is rotatably arranged on the rotating bracket 43. A driving sheave 441 is arranged at one end of the driving dial 44. A transmission sheave 45 that is connected to the driving sheave 441 by a belt is rotatably arranged on the air collection barrel 41. A transmission bevel gear 451 is arranged at one end of the transmission sheave 45. A pulse bevel gear 452 that meshes with the transmission bevel gear 451 is rotatably arranged on the air collection barrel 41. A pulse sheave 453 that is connected to the first-stage sheave 271 by a belt is arranged at the upper end of the pulse bevel gear 452.

[0048] Working principle of the pulse air supply mechanism 4: The first-level Geneva wheel 271 rotates. The first-level Geneva wheel 271 drives the pulse Geneva wheel 453 to rotate through a belt. The pulse bevel gear 452 rotates synchronously and drives the driving bevel gear 451 meshing with it to rotate. The driving Geneva wheel 45 rotates and drives the driving Geneva wheel 441 and the driving dial 44 to rotate synchronously through a belt. During the circumferential rotation of the driving dial 44, it intermittently contacts the rotating lever 431. When the driving dial 44 contacts the rotating lever 431 and drives the rotating bracket 43 to rotate through the rotating lever 431, the rotating bracket 43 drives the rotating crank 432 to move upward. The sealing piston 42 moves upward and compresses the pulse spring 421. The gas enters the air collecting barrel 41 through the one-way intake valve 411. The driving dial 44 continues to rotate until the driving dial 44 loses the limit on the rotating lever 431. The pulse spring 421 resets and drives the sealing piston 42 to quickly reset, and then conveys the gas in the air collecting barrel 41 to the gas storage bin 32 through a pipeline to purge impurities.

[0049] Combined with the attached Figure 1 , the attached Figure 2 , the attached Figure 10 And the attached Figure 11 As shown, the gravity centering mechanism 5 includes centering brackets 51 rotatably arranged at equal intervals along the circumferential direction of the forging top plate 11. The centering brackets 51 are L-shaped structures. There are no less than four groups of centering brackets 51. Symmetrically rotatable centering arms 52 are arranged on multiple groups of the centering brackets 51. A centering tooth ring 521 cooperating with the adjacent centering arm 52 is arranged on the centering arm 52. Multiple groups of centering grooves 522 are arranged on one centering arm 52, and a centering dial 523 is arranged on the other centering arm 52. A centering pin 524 cooperating with the centering groove 522 is connected to the centering bracket 51 by a rope. A centering slide column 53 is slidably arranged on the forging top plate 11. The centering slide column 53 penetrates the forging top plate 11. A regulating bracket 531 slidably cooperating with the centering bracket 51 is arranged at the lower end of the centering slide column 53. Symmetric slide rods slidably cooperating with the regulating bracket 531 are symmetrically arranged on the centering bracket 51. A centering spring 532 connected to the regulating bracket 531 is arranged on the forging top plate 11.

[0050] The working principle of the gravity centering mechanism 5 is as follows: the forged flange raw material is placed on the forged top plate 11, and the forged flange raw material drives the centering slide column 53 to slide downward by gravity, and the adjusting bracket 531 slides downward synchronously and drives the centering bracket 51 to rotate, and the adjusting bracket 531 squeezes the centering spring 532, and the centering spring 532 is forced to shrink. During the rotation of the centering bracket 51, the multiple groups of centering rotating arms 52 arranged on the upper part thereof are driven to rotate synchronously toward and abut against the forged flange raw material, thereby centering the forged flange raw material. Perform centering clamping, and further, pull out the centering pin 524 from the centering groove 522. At this time, the two adjacent centering arms 52 can rotate freely. Move the centering plate 523. Due to the setting of the centering tooth ring 521, the two centering arms 52 rotate synchronously, and then the centering arms 52 can be freely adjusted according to the size and placement position of the forged flange raw material. After the adjustment is completed, the centering pin 524 is matched with the corresponding centering groove 522 to achieve the fixation of the position of the centering arm 52.

[0051] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 10 With attached Figure 11 As shown, a large flange forging method, using the large flange forging equipment, the steps are as follows:

[0052] Step 1: drive the protection and purification mechanism 3 to move downward until the protection and purification mechanism 3 and the forging top plate 11 are at the same horizontal plane, and put the forging flange raw material on the forging top plate 11;

[0053] Step 2: The gravity centering mechanism 5 centers the forged flange raw material, and drives the protection and purification mechanism 3 to move upward to shield the forged flange raw material;

[0054] Step 3: driving the forging hammer 12 to move up and down to forge the forged flange raw material. During this process, the displacement mechanism 2 is driven to move by the power mechanism, and the displacement mechanism 2 is rotated by the forging top plate 11. During the rotation process, the rotation trajectory of the forging top plate 11 is adjusted so that the forging hammer 12 can forge the flange raw material.

[0055] Step 4: The pulse gas supply mechanism 4 intermittently supplies gas to the protection and purification mechanism 3, and the protection and purification mechanism 3 sprays gas to blow off the flange raw material and the raw material adhering to the forging hammer 12 during the forging process.

[0056] In the specific implementation of the present invention, the forging flange raw material is placed on the forging top plate 11. The forging flange raw material drives the centering slide column 53 to slide downward by gravity. The centering bracket 51 drives a plurality of groups of centering swing arms 52 to approach and abut against the forging flange raw material synchronously, so as to center and clamp the forging flange raw material. Then, operate the electric push rod to extend, and the protective cover plate 31 moves upward to shield the forging flange raw material, completing the preparatory work before forging;

[0057] When forging, start the forging hammer 12. The forging hammer 12 moves up and down reciprocally and abuts against the forging flange raw material, so as to perform forging operations on the forging flange raw material. During this process, start the drive motor 27. The first-stage sheave 271 and the second-stage sheave 272 rotate synchronously. The forging top plate 11 drives the forging flange raw material to rotate, so as to forge different positions of the forging flange raw material;

[0058] During this process, the first-stage sheave 271 drives the pulse sheave 453 to rotate. The rotating bracket 43 drives the rotating crank 432 to move up and down reciprocally. With the cooperation of the pulse spring 421, the gas enters the air collection barrel 41 through the one-way intake valve 411 and is quickly transported to the air storage chamber 32, and then is ejected from the purification nozzle 331 after passing through the purification air pipe 33. The ejected gas cleans the impurities;

[0059] Finally, after the forging is completed, operate the electric push rod to shorten. The electric push rod drives the protective cover plate 31 to move downward until the upper end surface of the protective cover plate 31 is flush with the forging top plate 11, and then transfer the forged forging flange raw material out of the forging top plate 11.

[0060] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A large flange forging device, including a supporting base (1), on which a hydraulically driven forging hammer (12) is provided. It is characterized in that: A forging support plate (13) is provided at the upper end of the supporting base (1), and a forging top plate (11) is slidably arranged on the forging support plate (13). A displacement mechanism (2) for driving the forging top plate (11) to rotate is provided on the supporting base (1). The displacement mechanism (2) includes a support frame (21) arranged inside the supporting base (1). A positioning grooved wheel (22) is rotatably provided at the upper end of the support frame (21). A positioning chute (222) is provided at the upper end of the positioning grooved wheel (22). A positioning slider (223) is slidably arranged in the positioning chute (222). Symmetrically arranged positioning slide columns (226) that are slidably matched with the forging top plate (11) are provided at the upper end of the positioning slider (223); A power mechanism for driving the positioning grooved wheel (22) to rotate in a circle and adjusting the distance between the positioning slider (223) and the center of the positioning grooved wheel (22) during the rotation of the positioning grooved wheel (22) is provided on the support frame (21); The power mechanism includes a driving motor (27) arranged on one side of the support frame (21). A primary grooved wheel (271) and a secondary grooved wheel (272) are provided at the output end of the driving motor (27). The secondary grooved wheel (272) is connected to the positioning grooved wheel (22) by a belt. The primary grooved wheel (271) drives a pulse gas supply mechanism (4) to supply gas to a protection and purification mechanism (3); An adjusting rotating column (23) is rotatably arranged on the support frame (21). Adjusting bevel gears (231) and mating bevel gears (232) are respectively provided at both ends of the adjusting rotating column (23). A synchronous toothed ring (24) is rotatably arranged on the support frame (21). A synchronous rod (241) is provided inside the synchronous toothed ring (24). A synchronous bevel gear (242) meshing with the mating bevel gear (232) is rotatably arranged on the synchronous rod (241). A power bevel gear (25) meshing with the synchronous bevel gear (242) is rotatably arranged on the support frame (21). A synchronous rotating column (26) is rotatably arranged on one side of the support frame (21). Synchronous gears (261) and mating gears (262) are respectively provided at both ends of the synchronous rotating column (26). The mating gear (262) meshes with the synchronous toothed ring (24). A positioning gear (221) meshing with the synchronous gear (261) is provided at the lower end of the positioning grooved wheel (22); A positioning screw rod (224) that is in threaded cooperation with the positioning slider (223) is rotatably arranged in the positioning chute (222). A positioning bevel gear (225) meshing with the adjusting bevel gear (231) is provided at one end of the positioning screw rod (224). When the power bevel gear (25) is stationary, the adjusting bevel gear (231) and the positioning grooved wheel (22) rotate at the same angular velocity; The supporting base (1) is movably provided with a protective and purifying mechanism (3) for avoiding impurity splashing during the forging process through air flow in the circumferential direction. A pulse air supply mechanism (4) is arranged in the supporting base (1) to intermittently supply gas to the protective and purifying mechanism (3) as the positioning grooved wheel (22) rotates. A plurality of gravity centering mechanisms (5) for centering the flange are equidistantly arranged along the circumferential direction on the forging top plate (11). The gravity centering mechanism (5) includes centering brackets (51) equidistantly arranged along the circumferential direction of the forging top plate (11). There are no less than four groups of centering brackets (51). A plurality of centering arms (52) are symmetrically and rotatably arranged on each group of centering brackets (51). A centering gear ring (521) for cooperating with the adjacent centering arm (52) is arranged on the centering arm (52). A plurality of centering grooves (522) are arranged on one centering arm (52), and a centering dial (523) is arranged on the other centering arm (52). A centering pin (524) cooperating with the centering groove (522) is connected to the centering bracket (51) through a rope. The centering bracket (51) is rotationally matched with the forging top plate (11). A centering slide column (53) is slidably arranged on the forging top plate (11). The centering slide column (53) penetrates through the forging top plate (11). An adjusting bracket (531) slidably matched with the centering bracket (51) is arranged at the lower end of the centering slide column (53). A centering spring (532) connected to the adjusting bracket (531) is arranged on the forging top plate (11).

2. The large flange forging equipment according to claim 1, characterized in that: The protective and purifying mechanism (3) includes a protective cover plate (31) slidably arranged on the outside of the supporting base (1). The protective cover plate (31) is driven by an electric push rod to slide along the axial direction of the supporting base (1). A gas storage chamber (32) is arranged at the lower end of the protective cover plate (31). The gas storage chamber (32) is communicated with the pulse air supply mechanism (4). A purification air pipe (33) is communicated with the gas storage chamber (32). A purification nozzle (331) facing the center of the protective cover plate (31) is arranged on the purification air pipe (33). A protective ring plate (332) is arranged at the top end of the protective cover plate (31).

3. A large flange forging device according to claim 2, characterized in that: The pulse air supply mechanism (4) includes a gas collecting barrel (41) arranged in the supporting base (1). The gas collecting barrel (41) is communicated with the gas storage chamber (32). A one-way intake valve (411) is communicated with the lower end of the gas collecting barrel (41). A sealing piston (42) that makes a reciprocating linear motion up and down as the first-stage grooved wheel (271) rotates is hermetically slidably arranged in the gas collecting barrel (41).

4. A large flange forging device according to claim 3, characterized in that: The sealing piston (42) extends into the gas collecting barrel (41), and one end of the sealing piston (42) is sleeved with a pulse spring (421). The upper end of the gas collecting barrel (41) is provided with a fixed support plate (46). A rotating bracket (43) is rotatably provided on one side of the fixed support plate (46). A rotating lever (431) is provided on the rotating bracket (43). A rotating crank (432) that is rotatably matched with the sealing piston (42) is rotatably provided on one end of the rotating bracket (43). A driving lever (44) that is intermittently matched with the rotating lever (431) is rotatably provided on the rotating bracket (43). The driving lever (44) shifts the rotating lever (431) to drive the rotating bracket (43) to rotate. The driving lever (44) is driven by the primary groove wheel (271).

5. A method for forging a large flange, using the large flange forging equipment described in any one of claims 1-4, characterized in that: The steps are as follows: Step 1: driving the protection and purification mechanism (3) to move downward until the protection and purification mechanism (3) and the forging top plate (11) are at the same horizontal plane, and placing the forging flange raw material on the forging top plate (11); Step 2: The gravity centering mechanism (5) centers the forged flange raw material, and drives the protection and purification mechanism (3) to move upward to form a shield for the forged flange raw material; Step 3: driving the forging hammer (12) to move up and down to forge the forged flange raw material. During this process, the displacement mechanism (2) is driven to move by the power mechanism, and the displacement mechanism (2) drives the forged flange raw material to rotate through the forging top plate (11). During the rotation process, the rotation trajectory of the forging top plate (11) is adjusted so that the forging hammer (12) can forge the part of the flange raw material; Step 4: The pulse gas supply mechanism (4) intermittently supplies gas to the protective purification mechanism (3), and the protective purification mechanism (3) sprays gas to blow off the flange raw material and the raw material adhering to the forging hammer (12) during the forging process.

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