A steam turbine cylinder casting manufacturing forming machining tool device

Abstract

The application discloses a steam turbine cylinder casting manufacturing forming machining tool device, which comprises a machine body, a detection assembly, a placing table and a clamping mechanism, the clamping mechanism comprises a telescopic assembly installed on the machine body, a pair of installation grooves are symmetrically arranged in the telescopic assembly, a pair of pressure rods which are connected with each other through linkage structures are arranged in each installation groove, a lifting plate is slidably arranged at the lower part of the pair of installation grooves, the lifting plate is elastically connected with the telescopic assembly and is also connected with the pair of linkage structures, the lifting plate is vertically lifted through an actuator, in daily use, the lifting plate and the telescopic assembly are lifted / descended through the actuator, the linkage structures control the pressure rods to extend / withdraw from the installation grooves after the telescopic assembly is lifted / before the telescopic assembly is descended, and the clamping mechanism is located below the placing table during the feeding and discharging processes, so that the workpiece can be prevented from colliding with the clamping mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of steam turbine cylinder casting processing technology, in particular to a steam turbine cylinder casting manufacturing and forming processing tool device. BACKGROUND

[0002] The steam turbine is one of the three major equipment in thermal power plants, and its rotor and cylinder have high machining precision. The main components work in high-temperature and high-pressure environments. The steam turbine cylinder is the outer shell of the steam turbine. The steam turbine is one of the three major equipment in thermal power plants, and its rotor and cylinder have high machining precision. The main components work in high-temperature and high-pressure environments.

[0003] The following defects may exist if the inner wall smoothness of the steam turbine cylinder does not meet the standard:

[0004] Affect steam flow:

[0005] The rough surface will interfere with the streamline flow of steam, causing vortex and turbulence in local areas, increasing energy loss and reducing the efficiency of the steam turbine.

[0006] Uneven surface roughness may also cause uneven steam flow, making the steam pressure and flow rate distribution uneven in each part of the cylinder, thereby affecting the output and stability of the steam turbine.

[0007] Cause fouling and corrosion:

[0008] The rough inner wall surface is more prone to adsorb impurities, salts and moisture in the steam, etc. These substances accumulate to form a scale layer. Fouling will further affect the heat transfer efficiency of the steam, reducing the performance of the steam turbine.

[0009] At the same time, the metal surface under the scale layer is prone to form a local corrosion environment, accelerating the corrosion process of the cylinder and shortening the service life of the cylinder. Corrosion may also cause the cylinder wall thickness to thin and the strength to decrease, posing a safety hazard.

[0010] Cause component wear:

[0011] When the steam turbine is running, the rotor and other components rotate at high speed in the cylinder. The insufficient inner wall smoothness will cause the airflow in the gap between the rotor and the cylinder to be turbulent, exerting uneven force on the rotor blades and shaft seals and other components, increasing the degree of component wear.

[0012] Wear will cause the dimensional accuracy of the components to decrease, affecting the dynamic balance of the rotor and causing vibration problems. Severe vibration will not only affect the normal operation of the steam turbine, but also cause damage to the foundation and connecting components of the entire unit.

[0013] Generate thermal stress concentration:

[0014] Due to the rough surface of the inner wall, during the start, stop and load change process of the steam turbine, the heating and cooling speed of the cylinder body will be uneven. The local protrusions and depressions of the rough surface will form weak points of heat exchange, causing poor heat transfer and thermal stress concentration phenomenon.

[0015] Long-term thermal stress concentration will cause fatigue cracks in the cylinder body material, and the cracks may cause cylinder leakage after expansion, affecting the safety and reliability of the steam turbine.

[0016] Therefore, it is necessary to detect the smoothness of the inner wall of the steam turbine cylinder casting. In order to avoid the occurrence of the above defects, several solutions have appeared in the prior art:

[0017] The technical scheme disclosed in the invention with publication number CN118150688A for a steam turbine cylinder casting forming and machining tool equipment is that the cylinder casting is fixed by a supporting mechanism, and the inner diameter detection assembly of the detection mechanism is controlled by the diameter size of the unfolded control connecting arm one through the telescopic rod three, so as to control the detection head to be close to the inner wall of the cylinder casting for inspection.

[0018] The invention with publication number CN114739268B for a steam turbine cylinder casting forming and machining tool device discloses that the cast formed steam turbine cylinder is supported and positioned by a supporting mechanism, the detection position of the detection mechanism is adjusted according to the inner diameter size of the steam turbine cylinder, and the smoothness of the inner wall of the cylinder body is detected by the detection mechanism.

[0019] However, the supporting structures of the above two technical schemes are horizontal telescopic clamping structures arranged on both sides of the table top, which are easy to collide with the clamping structure during the feeding and discharging process of the steam turbine cylinder, causing damage or deformation of the clamping structure and affecting the clamping effect of the clamping structure on the steam turbine cylinder. SUMMARY

[0020] The present application aims to solve one of the technical problems existing in the prior art.

[0021] The present application provides a steam turbine cylinder casting forming and machining tool device, which comprises a machine body, a detection assembly, a placing table and a clamping mechanism. The clamping mechanism comprises a telescopic assembly mounted on the machine body, a pair of mounting grooves are symmetrically arranged in the telescopic assembly, a pair of pressure rods are arranged in each mounting groove and are connected with each other through linkage structures, a lifting plate is slidably arranged at the lower part of the pair of mounting grooves, the lifting plate is elastically connected with the telescopic assembly and is drivingly connected with the pair of linkage structures, and the lifting plate is controlled to vertically lift and lower by an actuator.

[0022] When the actuator controls the lifting plate to lift / lower, the telescopic assembly is lifted and then each pressure rod is extended out of the mounting groove / each pressure rod is retracted into the mounting groove through the cooperation of each linkage structure, and then the telescopic assembly is lowered.

[0023] The telescopic assembly comprises a pair of lifting shells slidably mounted on the machine body through the slots, each of the lifting shells is located at the two sides of the placing table, each mounting slot is arranged on the inner side wall of each lifting shell, and the bottom of the outer side wall of each lifting shell is provided with a blocking block, and the two ends of the lifting plate are movably mounted in the corresponding mounting slot through the elastic supporting members.

[0024] The elastic supporting member comprises a plurality of sliding holes formed in the lower end of each lifting shell, a sliding rod is arranged in each sliding hole, the top end of each sliding rod extends into the corresponding mounting slot and is fixedly connected with the bottom surface of the lifting plate, a circular plate is fixedly arranged at the bottom end of each sliding rod, and a supporting spring is arranged between each circular plate and the bottom surface of the corresponding lifting shell.

[0025] The linkage structure comprises a fixed beam fixedly arranged in the middle of the mounting slot, an upper floating beam slidably arranged on the upper portion of the mounting slot, a lower floating beam slidably arranged on the lower portion of the mounting slot, a plurality of hinge seats respectively arranged at the two ends of the fixed beam, the upper floating beam and the lower floating beam, a pair of connecting rods are hingedly arranged between adjacent hinge seats, the middle portions of the pair of connecting rods are hingedly connected with each other and rotatably connected with the end portion of the pressing rod, the lower floating beam and the upper floating beam are transmissionally connected with each other through the gear transmission structure, and the lower floating beam is fixedly connected with the lifting plate.

[0026] The gear transmission structure comprises a transmission gear rotatably arranged on the fixed beam, and the surfaces of the upper floating beam and the lower floating beam are fixedly provided with a rack meshing with the transmission gear.

[0027] The pair of hinge seats at the same horizontal height are detachably arranged on the upper floating beam, the fixed beam and the lower floating beam through the quick release structure.

[0028] The quick release structure comprises a dismounting slot, a telescopic control assembly, a pair of clamping seats and a pair of clamping frames, the telescopic control assembly is arranged in the middle of the dismounting slot, each clamping seat is arranged at the two ends of the dismounting slot, each clamping frame is slidably sleeved on the outer circumferential side of the clamping seat, and the two ends of the dismounting slot are provided with clamping grooves; the telescopic control assembly is used for controlling the pair of clamping frames to be inserted into / detached from the corresponding clamping grooves.

[0029] The dismounting slot comprises a central circular groove and a pair of square grooves, the opposite sides of the central circular groove are communicated with the two square grooves through inner grooves, and the pair of clamping grooves are arranged at one end of each square groove away from the inner groove.

[0030] The telescopic control assembly comprises a rotating disc with an internal hexagonal recess, a push plate arranged in each inner groove through a push spring, a pair of swing rods and a pair of fan-shaped grooves, the pair of fan-shaped grooves are arranged in the rotating disc, one end of each swing rod is hingedly arranged in the inner end of each fan-shaped groove, the other end of each swing rod is hingedly connected with a connecting rod, the other end of each connecting rod is fixedly connected with the corresponding push plate, each push plate is inclined towards the outer side of one end of the corresponding clamping groove, and the other end of each push plate is abutted with the push spring.

[0031] The telescopic control assembly further comprises an arc groove arranged at the inner end of the central circular groove, the center of the arc groove is concentric with the axis of the central circular groove, and one third of the arc groove is below the horizontal line 9 and the remaining two thirds are above the horizontal line 9; the inner end of the rotating disc is fixed with a limiting block, and the limiting block is slidingly installed in the arc groove.

[0032] The beneficial effects of the present application are as follows:

[0033] The lifting plate connected with the telescopic assembly elastically is lifted by the actuator, the telescopic assembly with the linkage structure and the plurality of pressing rods is first lifted and then the pressing rods are extended to fix the workpiece, each pressing rod is released from the fixation to the workpiece, and then the telescopic assembly is lowered, so that the clamping mechanism is above the placement table only when the workpiece is fixed, and the clamping mechanism is above the placement table when the workpiece needs to be transferred to the placement table or removed from the placement table, which can effectively avoid the workpiece from colliding with the clamping mechanism during the feeding and discharging process, and improve the stability and consistency of the clamping effect of the clamping mechanism on the workpiece.

[0034] In addition, among the plurality of pressing rods, the lower two pressing rods are used to press and fix the two sides of the workpiece, and the upper two pressing rods are used to press and fix the top of the workpiece, which can improve the fixing effect on the workpiece, compared with the prior art which only fixes the workpiece from two sides, the probability of movement of the workpiece during detection by the detection assembly is further reduced, and the precision during detection of the workpiece is improved.

[0035] Furthermore, each hinged seat is detachably installed through the quick release structure, when different types of workpieces need to be clamped, each quick release structure is operated to release the fixation on each hinged seat, each clamping seat together with the corresponding connecting rod and pressing rod is detached, the connecting rod corresponding to each pressing rod (the diameter of the pressing rod is adapted to the contour of the workpiece to be clamped) is installed through the cooperation of each hinged seat and each quick release structure, so as to adapt to the clamping and fixation of workpieces with different surfaces and improve the application range of the machining device. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a perspective view of the machining tool device for the steam turbine cylinder casting in the embodiment of the present application (during feeding and discharging);

[0037] Figure 2 It is a perspective view of the machining tool device for the steam turbine cylinder casting in the embodiment of the present application (during detection);

[0038] Figure 3 It is a perspective view of the machining tool device for the steam turbine cylinder casting in the embodiment of the present application (during detection and the machine body is cut open);

[0039] Figure 4 It is a perspective view of the clamping mechanism in the embodiment of the present application;

[0040] Figure 5 is a perspective view of the upper floating beam in the embodiment of the present application;

[0041] Figure 6 is a perspective view of the quick release structure in the embodiment of the present application;

[0042] Figure 7 is a perspective view of the quick release structure in the embodiment of the present application (without the rotating disc);

[0043] Figure 8 is a perspective view of the mounting groove structure in the embodiment of the present application;

[0044] Figure 9 is a perspective view of the rotating disc, connecting rod and push plate in the embodiment of the present application;

[0045] Figure 10 is a perspective view of the clamping seat in the embodiment of the present application;

[0046] Figure 11 is an assembled perspective view of the connecting rods and pressing rods in the embodiment of the present application;

[0047] Figure 12 is a schematic view of the abutting state of the limiting block and the upper / lower end of the arc groove in the embodiment of the present application.

[0048] Reference signs

[0049] 1 - body, 2 - detection assembly, 3 - placement table, 4 - clamping mechanism, 5 - telescopic assembly, 51 - mounting groove, 52 - slot, 53 - lifting shell, 54 - blocking block, 55 - elastic support, 551 - sliding hole, 552 - sliding rod, 553 - round plate, 554 - supporting spring, 6 - linkage structure, 61 - pressing rod, 62 - fixed beam, 63 - upper floating beam, 631 - cover, 64 - lower floating beam, 65 - hinged seat, 66 - connecting rod, 67 - gear transmission structure, 671 - transmission gear, 672 - rack, 7 - actuator, 71 - lifting plate, 72 - motor, 73 - screw rod, 8 - quick release structure, 81 - dismounting groove, 811 - central round groove, 812 - square groove, 813 - inner groove, 8131 - protruding part, 8132 - through groove, 82 - telescopic control assembly, 821 - inner hexagonal recess, 822 - rotating disc, 823 - push spring, 824 - push plate, 825 - swing rod, 826 - sector groove, 827 - connecting rod, 828 - arc groove, 829 - limiting block, 83 - clamping seat, 84 - clamping frame, 85 - clamping groove, 86 - square ring groove, 87 - blocking block, 88 - reset groove, 89 - reset spring, 9 - horizontal line. DETAILED DESCRIPTION

[0050] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0051] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0052] The tooling device for manufacturing and forming steam turbine cylinder castings provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0053] Example 1:

[0054] like Figures 1 to 11 As shown, this application provides a tooling device for manufacturing and forming steam turbine cylinder castings, including a body 1, a detection component 2, a placement platform 3, and a clamping mechanism 4. The clamping mechanism 4 includes a telescopic component 5 installed on the body 1. A pair of mounting slots 51 are symmetrically arranged in the telescopic component 5. Each mounting slot 51 is provided with a pair of pressure rods 61 that are mutually connected by a linkage structure 6. A lifting plate 71 is slidably arranged at the lower part of the pair of mounting slots 51. The lifting plate 71 is elastically connected to the telescopic component 5 and is also connected to the pair of linkage structures 6. The lifting plate 71 is vertically raised and lowered by an actuator 7.

[0055] When the actuator 7 controls the lifting plate 71 to rise / fall, it drives the telescopic assembly 5 to rise and then cooperates with each linkage structure 6 to make each pressure rod 61 extend out of the mounting groove 51 / cooperates with each linkage structure 6 to make the pressure rod 61 retract into the mounting groove 51, and then drives the telescopic assembly 5 to fall.

[0056] In this embodiment of the application, due to the aforementioned structure, when the workpiece on the top of the placement platform 3 needs to be clamped, the actuator 7 controls the lifting plate 71 to rise, and the telescopic assembly 5, which is elastically connected to the lifting plate 71, also rises until all the pressure rods 61 have moved above the placement platform 3. The telescopic assembly 5 has risen to its highest point and cannot rise further. The actuator 7 continues to operate to control the lifting plate 71 to rise, driving each linkage structure 6 to move, causing each pressure rod 61 to extend out of the mounting slot 51, approaching and pressing the left and right sides and the left and right ends of the workpiece from both sides and the top. Then, the detection assembly 2 (including an L-frame driven by a cylinder, with a rod on the L-frame and a probe at the other end of the rod) operates to detect the inner wall smoothness of the workpiece (the cylinder drives the L-frame to move, causing the probe to...). The probe extends into the inner wall of the workpiece. There are several probes arranged in a circular pattern. The smoothness of the inner wall of the workpiece can be detected simply by the rod moving in and out of the inner wall. After the smoothness of the inner wall of the workpiece is detected, the detection component 2 is removed from the workpiece (the cylinder drives the L-frame away from the workpiece until the probe is removed from the workpiece). Then, the actuator 7 controls the lifting plate 71 to descend. Each linkage structure 6 moves in the opposite direction, causing each pressure rod 61 to retract into the corresponding mounting groove 51, disengaging from contact with the workpiece surface and releasing the fixation of the workpiece. Then, the actuator 7 continues to operate, and the lifting plate 71 and the telescopic component 5 descend together until the top surface of the telescopic component 5 is flush with the top surface of the placement table 3. At this time, the workpiece can be removed from the placement table 3. After the next workpiece to be detected is placed on the top surface of the placement table 3, the actuator 7 will run again.

[0057] Example 2:

[0058] like Figures 1 to 4 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the telescopic component 5 includes a pair of lifting shells 53 that are slidably mounted on the body 1 through slots 52. Each lifting shell 53 is located on both sides of the placement platform 3. Each mounting slot 51 is respectively provided on the inner side wall of each lifting shell 53. Each lifting shell 53 has a blocking block 54 at the bottom of its outer side wall. Both ends of the lifting plate 71 are movably mounted in the corresponding mounting slot 51 through elastic support members 55.

[0059] Furthermore, the elastic support 55 includes several sliding holes 551 opened at the lower end of each lifting shell 53, each sliding hole 551 is provided with a sliding rod 552, the top end of each sliding rod 552 extends into the corresponding mounting groove 51 and is fixedly connected to the bottom surface of the lifting plate 71, and a circular plate 553 is fixed at the bottom end, and a support spring 554 is provided between each circular plate 553 and the bottom surface of the corresponding lifting shell 53.

[0060] The actuator 7 includes a motor 72 and a screw 73, which is connected to the lifting plate 71 via a screw hole for threaded transmission.

[0061] In this embodiment of the application, due to the above-mentioned structure, the motor 72 drives the screw 73 to rotate and perform threaded transmission through the screw hole 74. When the lifting plate 71 is raised, under the support of each support spring 554, the bottom surfaces of both ends of the lifting plate 71 are pressed against the bottom surfaces of each mounting groove 51. When the lifting plate 71 rises, it drives a pair of lifting shells 53 to rise together until each pressure rod 61 rises above the placement platform 3. The blocking block 54 on the outer wall of each lifting shell 53 also abuts against the top surface of the inner cavity of the machine body 1. Each lifting shell 53 can no longer rise, while the motor 72 continues to run. Since each lifting shell 53 can no longer rise, the lifting plate 71 continues to rise in each mounting groove 51. Each sliding rod 552 rises together with the lifting plate 71. Each support spring 554 is compressed and stores elastic potential energy. At the same time, the rising lifting plate 71 drives the linkage structure 6 to move, so that each pressure rod 61 extends out of the corresponding mounting groove 51 to fix the workpiece on the placement platform 3.

[0062] The motor 72 drives the screw 73 to rotate and transmits the screw through the screw hole 74. When the lifting plate 71 is lowered, each support spring 554 gradually extends but still supports the pair of lifting shells 53. During this process, each linkage structure 6 moves in the opposite direction until the bottom surface of the lifting plate 71 contacts the bottom surface of the pair of mounting slots 51. Each pressure rod 61 retracts into the corresponding mounting slot 51. Then the motor 72 continues to run, causing the lifting plate 71 to descend. At this time, each lifting shell 53 descends together with the lifting plate 71 until the top surface of each lifting shell 53 is flush with the surface of the placement platform 3. The actuator 7 then stops running.

[0063] Example 3:

[0064] like Figures 2 to 4 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the linkage structure 6 includes a fixed beam 62 fixed in the middle of the mounting groove 51, an upper floating beam 63 slidably mounted on the upper part of the mounting groove 51, a lower floating beam 64 slidably mounted on the lower part of the mounting groove 51, and a plurality of hinge seats 65 respectively mounted on both ends of the fixed beam 62, the upper floating beam 63 and the lower floating beam 64. A pair of connecting rods 66 are hinged between adjacent hinge seats 65. The middle parts of the pair of connecting rods 66 are hinged to each other and rotatably connected to the end of the pressure rod 61. The lower floating beam 64 and the upper floating beam 63 are connected to each other through a gear transmission structure 67. The lower floating beam 64 is fixedly connected to the lifting plate 71.

[0065] Furthermore, the top of the upper floating beam 63 is provided with a cover edge 631, and when the upper floating beam 63 rises to the top of the mounting groove 51, the top surface of the cover edge 631 is flush with the top surface of the lifting shell 53.

[0066] Furthermore, the gear transmission structure 67 includes a transmission gear 671 rotatably mounted on the fixed beam 62, and racks 672 that mesh with the transmission gear are fixed on the surfaces of the upper floating beam 63 and the lower floating beam 64.

[0067] In this embodiment of the application, due to the above-described structure, when the lifting plate 71 rises / falls in the mounting groove 51, it drives the lower floating beam 64 to approach / move away from the fixed beam 62. Each rack 672 meshes with the transmission rod gear 671, driving the upper floating beam 63 to simultaneously approach / move away from the fixed beam 62. This causes the end of each pair of connecting rods 66 away from the hinge seat 65 to extend / retract into the mounting groove 51, thereby controlling the extension / retraction of each pressure rod 61 into the mounting groove 51.

[0068] Example 4:

[0069] like Figures 4 to 11 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, a pair of hinged seats 65 at the same horizontal height are detachably mounted on the upper floating beam 63, the fixed beam 62 and the lower floating beam 64 via a quick-release structure 8.

[0070] Furthermore, the quick-release structure 8 includes a disassembly slot 81, a telescopic control component 82, a pair of card seats 83, and a pair of card frames 84. The telescopic control component 82 is located in the middle of the disassembly slot 81, each card seat 83 is located at both ends of the disassembly slot 81, and each card frame 84 is slidably sleeved on the outer periphery of the card seat 83. The two ends of the disassembly slot 81 are provided with card slots 85. The telescopic control component 82 is used to control the insertion / removal of the pair of card frames 84 into / out of the corresponding card slots 85.

[0071] Furthermore, the quick-release structure 8 also includes a square annular groove 86 arranged around the circumferential wall of the maximum diameter of each card holder 83. The card frame 84 is slidably disposed in the square annular groove 86 and has a sliding space with the square annular groove 86 in the lateral direction. The top and bottom of the square annular groove 86 are fixedly provided with a stop block 87. The top and bottom of the card frame 84 are provided with a reset groove 88. Each reset groove 88 is provided with a reset spring 89. The two ends of each reset spring 89 respectively abut against the corresponding stop block 87 and the end of the corresponding reset groove 88 away from the card slot 85.

[0072] Furthermore, the disassembly and assembly slot 81 includes a central circular slot 811 and a pair of square slots 812. The opposite sides of the central circular slot 811 are connected to the square slots 812 on both sides through an inner slot 813. A pair of locking slots 85 are respectively provided at the end of each square slot 812 away from the inner slot 813.

[0073] Furthermore, the top and bottom surfaces of the inner groove 813 near the central circular groove 811 are both provided with protrusions 8131, and a through groove 8132 is formed between adjacent pairs of protrusions 8131. One end of each thrust spring 823 abuts against the corresponding protrusion 8131, and the other end abuts against the corresponding push plate 824. Each connecting rod 827 is inserted into the through groove 8132 between corresponding pairs of protrusions 8131.

[0074] In this embodiment of the application, due to the above-described structure, when installing the hinge seat 65, the card holder 83 is aligned with the corresponding square groove 812, and then the card holder 83 is pressed into the square groove 812 until the card holder 83 is fully inserted into the square groove 812. Then, the telescopic control component 82 is operated to push the card frame 84 into the corresponding card slot 85. Each reset slot 88 moves with the card frame 84, compressing the reset spring 89. Each reset spring 89 stores elastic potential energy under compression, thus completing the installation of the hinge seat 65. When disassembling the hinge seat 65, the telescopic control component 82 is operated to release the force on the card frame 84. Each reset spring 89 releases elastic potential energy, pushing the corresponding reset slot 88 and the card frame 84 to slide away from the corresponding card slot 85 until the card frame 84 moves into the square groove 812. At this time, the card holder 83 can be disengaged from the square groove 812.

[0075] Example 5:

[0076] like Figures 5 to 12 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the telescopic control assembly 82 includes a turntable 822 with an internal hexagonal groove 821, push plates 824 installed in each inner groove 813 via thrust springs 823, a pair of rocker arms 825, and a pair of sector grooves 826. The pair of sector grooves 826 are spaced apart in the turntable 822. One end of each pair of rocker arms 825 is hinged to the inner end of each sector groove 826, and the other end is hinged to a connecting rod 827. The other end of each connecting rod 827 is fixedly connected to the corresponding push plate 824. Each push plate 824 is inclined towards the outer side of one end of the corresponding slot 85, and the other end abuts against the thrust spring 823.

[0077] Furthermore, the telescopic control assembly 82 also includes an arc groove 828 disposed at the inner end of the central circular groove 811. The center of the arc groove 828 is concentric with the axis of the central circular groove 811, and one-third of the arc groove 828 is located below the horizontal line 9, while the remaining two-thirds are located above the horizontal line 9. A limiting block 829 is fixedly disposed at the inner end of the turntable 822, and the limiting block 829 is slidably installed in the arc groove 828.

[0078] In this embodiment of the application, due to the adoption of the above structure, in the initial state, each limiting block 829 is located at the upper end of the corresponding arc groove 828, each push spring 823 is stretched, and the end of each push plate 824 away from the push spring 823 extends into the square groove 812. The outer side of the end of each push plate 824 is inclined, and when the clamping seat 83 is pressed into the square groove 812, it cooperates with the inclined portion of each push plate 824 to push each push plate 824 out of the square groove 812. In this process, each push spring 823 is compressed to store elastic potential energy, each connecting rod 827 moves together with the corresponding push plate 824, the push plate 824 pushes the swing rod 825 to rotate the rotating disc 822, and the limiting block 829 slides to the middle of the arc groove 828 (at this time, the limiting block 829 is still above the horizontal line 9, and the end of each swing rod 825 located in the corresponding fan-shaped groove 826 also does not cross the horizontal line 9), until the clamping seat 83 is completely inserted into the square groove 812, the clamping frame 84 is aligned with the push plate 824, and each push spring 823 releases the elastic potential energy to push each clamping frame 84 to slide into the clamping groove 85 (the total elastic force of each push spring 823 is greater than the total elastic force of each reset spring 89 on the corresponding clamping frame 84). Each connecting rod 827 moves together with each push plate 824 in the direction of the square groove 812, each swing rod 825 pulls the rotating disc 822 to rotate, and each limiting block 829 slides to abut against the upper end face of the corresponding arc groove 828. When it is necessary to disassemble each clamping seat 83, the rotating disc 822 is rotated to drive each swing rod 825 to pull the corresponding connecting rod 827 and push plate 824 to move to the central circular groove 811, each push spring 823 is compressed to store elastic potential energy, and each reset spring 89 releases the elastic potential energy to push the corresponding reset groove 88 to make the corresponding clamping frame 84 disengage from the corresponding clamping groove 85 and completely enter the corresponding square groove 812. Each limiting block 829 moves beyond the horizontal line 9 to the lower end of the arc groove 828, and at the same time, the end of each swing rod 825 located in the corresponding fan-shaped groove 826 also crosses the horizontal line 9. Then the worker takes out the inner hexagonal bolt from the inner hexagonal recess 821, the external force limit of the rotating disc 822 is removed, each push spring 823 releases the elastic potential energy and applies a pushing force away from the central circular groove 811 to each push plate 824. This will apply the force of the push spring 823 to each connecting rod 827 and swing rod 825, thereby making the limiting block 829 abut against the lower end of the arc groove 828, and making each push plate 824 unable to enter the square groove 812. After the worker takes out the clamping seat 83 from each square groove 812, the rotating disc 822 is rotated in the opposite direction to make each limiting block 829 slide to the upper end of the arc groove 828. When each limiting block 829 moves above the horizontal line 9, each push spring 823 releases the elastic potential energy to push the end of each push plate 824 with an inclined surface to extend into the square groove 812.

[0079] The horizontal line 9 is coaxial with the connecting rods 827 and the center of the rotating disc 822 is also on the horizontal line 9. When the limiting block 829 is located at the upper end of the arc groove 828, the pushing force of each pushing spring 823 applied to each push plate 824 away from the rotating disc 822 is transmitted to the rotating disc 822 through the connecting rods 827 and the swing rods 825, so that the rotating disc 822 bears a force in the clockwise direction, and the limiting block 829 abuts against the upper end of the arc groove 828. When the limiting block 829 rotates to the lower end of the arc groove 828, the rotating disc 822 rotates, and each swing rod 825 moves to the other side of the horizontal line 9. The pushing force of each pushing spring 823 applied to each push plate 824 away from the rotating disc 822 is transmitted to the rotating disc 822 through the connecting rods 827 and the swing rods 825, so that the rotating disc 822 bears a force in the counterclockwise direction, and the limiting block 829 abuts against the lower end of the arc groove 828.

[0080] It should be noted that the terms "comprising," "including," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. Additionally, it should be noted that the scope of the methods and apparatus of the present embodiments are not limited by the order of the steps or the sequences of the steps, as some steps can occur in different orders and / or concurrently with one another; for example, described methods can be performed in an order other than that described, and / or additional steps can be added, or steps can be omitted, or a combination thereof. Also, characteristics described in relation to certain examples can be combined in other examples.

[0081] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific embodiments described above, which are merely illustrative rather than restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, which are all within the protection scope of the present application.

Claims

1. A tooling device for manufacturing and forming steam turbine cylinder castings, comprising a body, a testing assembly, a placement platform, and a clamping mechanism, characterized in that, The clamping mechanism includes a telescopic assembly installed on the machine body. A pair of mounting slots are symmetrically arranged inside the telescopic assembly. Each mounting slot is provided with a pair of pressure rods that are connected to each other through a linkage structure. A lifting plate is slidably arranged at the lower part of the pair of mounting slots. The lifting plate is elastically connected to the telescopic assembly and is also connected to the pair of linkage structures through a transmission. The lifting plate is controlled to lift vertically by an actuator. When the actuator controls the lifting plate to rise / fall, it drives the telescopic assembly to rise and then, in conjunction with the linkage structure, causes each pressure rod to extend out of the mounting slot; or, in conjunction with the linkage structure, causes the pressure rod to retract into the mounting slot and then drives the telescopic assembly to fall. The telescopic assembly includes a pair of lifting shells that are slidably mounted on the body through slots. Each lifting shell is located on both sides of the placement platform. Each mounting slot is set on the inner side wall of each lifting shell. Each lifting shell has a blocking block at the bottom of its outer side wall. Both ends of the lifting plate are movably mounted in the corresponding mounting slots through elastic support members. The elastic support includes several sliding holes opened at the lower end of each lifting shell, each sliding hole is provided with a sliding rod, the top end of each sliding rod extends into the corresponding mounting groove and is fixedly connected to the bottom surface of the lifting plate, and a circular plate is fixed at the bottom end. A support spring is provided between each circular plate and the bottom surface of the corresponding lifting shell. The linkage structure includes a fixed beam fixed in the middle of the mounting groove, an upper floating beam slidably mounted on the upper part of the mounting groove, a lower floating beam slidably mounted on the lower part of the mounting groove, and several hinge seats respectively mounted on both ends of the fixed beam, the upper floating beam, and the lower floating beam. A pair of connecting rods are hinged between adjacent hinge seats. The middle parts of the pair of connecting rods are hinged to each other and rotatably connected to the end of the pressure rod. The lower floating beam and the upper floating beam are connected to each other through a gear transmission structure. The lower floating beam is fixedly connected to the lifting plate.

2. The tooling device for manufacturing and forming steam turbine cylinder castings according to claim 1, characterized in that, The gear transmission structure includes a transmission gear rotatably mounted on a fixed beam, and racks that mesh with the transmission gear are fixed on the surfaces of both the upper and lower floating beams.

3. The tooling device for manufacturing and forming steam turbine cylinder castings according to claim 1, characterized in that, A pair of hinged seats at the same horizontal level can be detachably installed on the upper floating beam, fixed beam, and lower floating beam via a quick-release structure.

4. The tooling device for manufacturing and forming steam turbine cylinder castings according to claim 3, characterized in that, The quick-release structure includes a disassembly slot, a telescopic control component, a pair of card seats, and a pair of card frames. The telescopic control component is located in the middle of the disassembly slot, each card seat is located at both ends of the disassembly slot, and each card frame is slidably sleeved on the outer periphery of the card seat. Card slots are provided at both ends of the disassembly slot, and the telescopic control component is used to control the insertion / removal of the pair of card frames into / out of the corresponding card slots.

5. The tooling device for manufacturing and forming steam turbine cylinder castings according to claim 4, characterized in that, The disassembly and assembly slot includes a central circular slot and a pair of square slots. The opposite sides of the central circular slot are connected to the square slots on both sides through an inner slot. A pair of locking slots are respectively set at the ends of each square slot away from the inner slot.

6. The tooling device for manufacturing and forming steam turbine cylinder castings according to claim 5, characterized in that, The telescopic control assembly includes a turntable with an internal hexagonal groove, push plates mounted in each inner groove via thrust springs, a pair of rocker arms, and a pair of sector grooves. The pair of sector grooves are spaced apart inside the turntable. One end of each pair of rocker arms is hinged to the inner end of each sector groove, and the other end is hinged to a connecting rod. The other end of each connecting rod is fixed to the corresponding push plate. Each push plate is inclined towards the outer side of one end of the corresponding slot, and the other end abuts against the thrust spring.

7. The tooling device for manufacturing and forming steam turbine cylinder castings according to claim 6, characterized in that, The telescopic control assembly also includes an arc groove disposed at the inner end of the central circular groove, the center of the arc groove being concentric with the axis of the central circular groove, and a limiting block being fixedly disposed at the inner end of the turntable, the limiting block being slidably installed in the arc groove.

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