Supporting device for machining leakage stopping ring of water turbine

Abstract

The invention relates to a supporting device for machining a leakage stopping ring of a water turbine. The supporting device mainly comprises a fixing frame, a rotating disc, a rotating mechanism, a telescopic clamping mechanism, a clamping block linkage mechanism and the like. The rotary disc is driven by the rotary driving motor, the axial position of the telescopic rod is adjusted in cooperation with the threaded column and the lifting block, and then precise clamping and rotary machining of the leakage stopping ring body are achieved. The telescopic clamping mechanism is composed of a telescopic rod, a clamping block and the like, clamping switching of the outer ring face and the inner ring face of the leakage stopping ring body can be achieved according to machining requirements, the stability in the machining process is improved, rapid switching between different machining faces can be achieved on the premise that the leakage stopping ring body is not disassembled, and the machining efficiency is improved. The problems that in a traditional device, the fixing mode is not flexible, the coaxiality is difficult to guarantee, the clamping stability is insufficient, and adjustment operation is tedious are solved, and the high-precision machining device has the advantages of being easy and convenient to operate, high in machining precision, high in machining efficiency and high in clamping stability and is widely suitable for high-precision machining of the water turbine leakage stopping ring.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical processing support devices, and particularly relates to a processing support device for a water turbine gland seal ring. Background Art

[0002] A water turbine is a device that uses hydraulic energy to generate electricity or drive machinery. A gland seal ring is usually provided inside it to reduce the leakage between the shafting and the casing, thereby improving the operating efficiency of the water turbine. With the increasing requirements for the working reliability and efficiency of hydraulic power generation equipment, the machining accuracy and assembly quality of the gland seal ring become particularly important. However, since the gland seal ring generally has an annular structure, during the actual machining process, it is often necessary to perform machining operations such as cutting, drilling, or turning on its inner ring surface or outer ring surface with relatively high concentricity. In the prior art, the following problems usually exist in the machining support for such annular workpieces: 1. The fixing method is not flexible enough: Most traditional toolings can only be fixed on a single outer ring or inner ring of the workpiece, and it is difficult to quickly switch the machining of the inner and outer ring surfaces on the same tooling. If it is necessary to machine both the inner ring surface and the outer ring surface of the gland seal ring, it usually requires multiple disassembly, installation, and realignment, which not only increases the operation difficulty but also reduces the production efficiency.

[0003] 2. It is difficult to ensure the coaxiality: During the machining process, the annular workpiece needs to be strictly concentric with the rotating shaft of the machine tool. If the positioning method of the existing tooling has a large deviation or insufficient stability, it is easy to cause radial runout or inclination during machining, affecting the matching accuracy between the gland seal ring and the water turbine shafting, and thus unable to fully meet the high-precision gland seal requirements.

[0004] 3. The clamping stability is insufficient: When the gland seal ring is clamped for machining, it needs to withstand cutting forces or drilling forces in different directions. If the tooling structure cannot effectively accommodate and position gland seal rings of various sizes, or the clamping force distribution is uneven, it is easy for the workpiece to loosen or deform during machining, resulting in damaged machining quality.

[0005] 4. The adjustment operation is cumbersome: When some toolings adjust the clamping stroke or replace the clamping surface, it is necessary to manually disassemble and install multiple parts and perform repeated debugging to meet the requirements. This not only increases the usage time but also easily causes deviation in the clamping position due to human errors, unable to meet the higher requirements for machining efficiency and quality.

[0006] In summary, the existing devices for machining and supporting the water turbine gland seal ring still have deficiencies such as being unable to flexibly complete the machining of the inner and outer ring surfaces on the same tooling, difficult to ensure the clamping coaxiality, and cumbersome operation when adjusting the clamping method. Summary of the Invention

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to provide a support device for processing a leak-proof ring of a turbine, which can be realized by clamping the inner and outer ring surfaces of the leak-proof ring in different ways without disassembling the leak-proof ring workpiece, ensuring the processing concentricity and improving the clamping stability and efficiency, thereby meeting the continuous improvement of the precision and efficiency of hydropower equipment.

[0008] To achieve the above object, the present invention provides the following technical solutions: A turbine leak-proof ring processing support device, comprising a fixing frame and a leak-proof ring body, wherein a rotating mechanism is arranged on the upper surface of the fixing frame, wherein the rotating mechanism comprises a rotating disk mounted on the output shaft of a rotating drive motor, and wherein the rotating mechanism is used to rotate the leak-proof ring body; Four extension rods are evenly arranged on the outside of the turntable, the extension rods extend beyond the outside of the turntable, a slide groove is provided on the upper surface of the extension rods, and a telescopic clamping mechanism is provided on the upper surface of the turntable, and the telescopic clamping mechanism is used to clamp and fix the leak-proof ring body; The telescopic clamping mechanism includes a threaded column vertically rotating at the center of the upper surface of the turntable and telescopic rods sliding in the slide grooves respectively, and a clamping block is vertically slidably installed on the surface of the telescopic rod, and the clamping block is used to clamp the leak-proof ring body; A clamping block linkage mechanism is provided on the lower surface of the turntable, and the clamping block linkage mechanism is used for synchronously controlling the extension and retraction of the four clamping blocks.

[0009] Furthermore, bolt fixing grooves are symmetrically provided on both sides of the bottom of the fixing frame, the leak-proof ring body is placed on the upper surface of the four telescopic rods, mounting holes are provided on the surface of the telescopic rods, and the clamping blocks are slidably installed in the mounting holes.

[0010] Furthermore, a rotating handle is provided on the top of the threaded column, a lifting block is screwed on the surface of the threaded column, four first connecting rods are evenly connected on the surface of the lifting block, and one end of the four first connecting rods away from the lifting block is respectively hinged to the inner end of the telescopic rod.

[0011] Furthermore, the inner and outer surfaces of the clamping block are evenly provided with anti-slip grooves, a connecting rod is vertically provided at the bottom of the clamping block, the connecting rod passes through the lower surface of the telescopic rod, and two limit plates are provided at the bottom of the connecting rod, and the two limit plates are respectively placed under the telescopic rod.

[0012] Furthermore, a lower extension plate is symmetrically arranged below the end of the extension rod, and the clamp linkage mechanism includes a rotating gear rotating between the two lower extension plates and a gear rod sliding on the lower surface of the extension rod, and the lower surface of the extension rod is provided with a groove matching the gear rod, and a swing plate is arranged on the outer side of the rotating gear surface, and the swing plate is placed below the telescopic rod.

[0013] Furthermore, a U-shaped groove is provided on the surface of the swing plate, the swing plate is placed between the two limit plates, and the connecting rod passes through the U-shaped groove.

[0014] Furthermore, the gear rod passes through between the two lower extension plates, and the gear rod is meshed with the rotating gear.

[0015] Furthermore, bosses are evenly arranged on the lower surface of the turntable, a rotating ring is rotatably installed between the plurality of bosses, the rotating ring coincides with the center of the turntable, a second connecting rod is evenly hinged on the surface of the rotating ring, and one end of the second connecting rod facing away from the rotating ring is hinged to the end of the gear rod.

[0016] Furthermore, an arc-shaped groove is provided on the upper surface of the turntable, and a locking knob is screwed on one side of the upper surface of the rotating ring, and the locking knob passes through the arc-shaped groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The fixing method in the prior art is not flexible enough. The technical solution sets a telescopic clamping mechanism and a clamping block linkage mechanism on the turntable, so that the leak-proof ring body can be pressed against the outer ring surface by the clamping block, or pressed against the inner ring surface by moving the clamping block inward, thereby realizing rapid switching of the inner and outer ring surfaces; the turntable and the fixed frame cooperate with the rotating drive motor, which can complete the flexible switching of different processing surfaces while keeping the leak-proof ring body intact, thereby improving the processing efficiency and reducing the positioning errors caused by multiple disassembly and assembly.

[0018] In the prior art, coaxiality is difficult to ensure. The technical solution is to evenly arrange extension rods around the circumference of the turntable and cooperate with slide grooves and telescopic rods so that the main body of the leak-proof ring is evenly distributed around the center of the turntable when clamped; the cooperation between the threaded column and the lifting block can drive the telescopic rod to synchronously adjust the radial or axial direction, and the four clamping blocks can be driven by the clamping block linkage mechanism to move synchronously, ensuring that the main body of the leak-proof ring is concentric with the rotating axis of the turntable, thereby improving the coaxiality during processing, reducing the runout error and obtaining higher processing accuracy.

[0019] The clamping stability in the prior art is insufficient. The technical solution of this invention provides anti-slip grooves on the inside and outside of the clamping block, and cooperates with the swing plate through the connecting rod and the limit plate, so that the clamping block can provide stable and uniform contact pressure when it is close to the stop-leak ring body; the telescopic rod is made of high-strength material and slides smoothly in the slide groove, and the radial position of the clamping block is adjusted by the first connecting rod and the lifting block, which can maintain reliable support and stable clamping effect in the processing of stop-leak ring bodies of various sizes, thereby avoiding loosening or deformation of the workpiece.

[0020] In the prior art, the adjustment operation is cumbersome. In this technical solution, a rotating ring, a toothed rod and a rotating gear are arranged on the lower surface of the turntable, and an arc-shaped groove and a locking knob are used for linkage adjustment. By rotating the corresponding components, multiple clamping blocks can be driven to contract or expand simultaneously, and positioning can be quickly completed when different ring surfaces need to be processed; this structure reduces the steps of repeatedly disassembling and assembling accessories, and combines a rotating handle and a lifting block to make the clamping or loosening operation more convenient, thereby shortening the preparation time before workpiece processing and reducing the operation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional external support structure diagram of the present invention; Figure 2 is a three-dimensional internal support structure diagram of the present invention; Figure 3 is of the present invention Figure 2 cross-sectional structure diagram; Figure 4 is a telescopic clamping structure diagram of the present invention; Figure 5 is a bottom view structure diagram of the turntable of the present invention; Figure 6 is an installation structure diagram of the swing plate and the clamping block of the present invention; Figure 7 is a three-dimensional structure diagram of the clamping block of the present invention; Figure 8 is a bottom view structure diagram of the clamping block linkage mechanism of the present invention; Figure 9 is a three-dimensional structure diagram of the turntable of the present invention.

[0022] In the drawings, the list of components represented by each reference numeral is as follows: 1. Fixed frame; 11. Bolt fixing groove; 12. Rotating drive motor; 2. Rotating mechanism; 21. Turntable; 22. Arc-shaped groove; 23. Extension rod; 24. Chute; 25. Lower extension plate; 26. Boss; 3. Telescopic clamping mechanism; 31. Threaded column; 32. Rotating handle; 33. Lifting block; 34. First connecting rod; 35. Telescopic rod; 36. Installation hole; 37. Clamping block; 371. Anti-slip pattern; 38. Connecting rod; 39. Limiting plate; 4. Clamping block linkage mechanism; 41. Rotating gear; 42. Swing plate; 43. U-shaped groove; 44. Toothed rod; 45. Rotating ring; 46. Second connecting rod; 47. Locking knob; 5. Leak-proof ring body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the purpose and advantages of the present invention clearer and more understandable, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0024] Embodiment 1: Refer to Figures 1-9 , a processing support device for a water turbine gland packing, including a fixing frame 1 and a gland packing main body 5. A rotating mechanism 2 is arranged on the upper surface of the fixing frame 1. The rotating mechanism 2 includes a turntable 21 installed on the output shaft of a rotating drive motor 12. The rotating mechanism 2 is used to rotate the gland packing main body 5; the processing support device for the water turbine gland packing is applicable to the high-precision concentric processing requirements of the inner ring surface and the outer ring surface of the gland packing during the operation of the water turbine; the fixing frame 1 is made of Q235 carbon steel and has a thickness of 10 mm to ensure stability; the rotating drive motor 12 is selected as the Y series with a model of 3.0 kW and has a rated speed of 1450 revolutions per minute; the turntable 21 is made of 45# steel and is subjected to overall quenching and tempering treatment to improve strength and wear resistance; the rotating mechanism 2 can provide a stable torque during machining processes such as turning and grinding; thus avoiding eccentricity and runout problems during the machining of the inner and outer ring surfaces of the gland packing main body 5.

[0025] Four extension rods 23 are evenly arranged on the outer side of the turntable 21. The extension rods 23 extend beyond the outer side of the turntable 21. A chute 24 is opened on the upper surface of the extension rod 23. A telescopic clamping mechanism 3 is arranged on the upper surface of the turntable 21. The telescopic clamping mechanism 3 is used to clamp and fix the gland packing main body 5; the four extension rods 23 are respectively made of 45# steel and are subjected to quenching and tempering treatment to ensure relatively high stiffness and toughness; the length of the chute 24 is between 100 mm and 200 mm to adapt to gland packing main bodies 5 of different specifications; the telescopic clamping mechanism 3 rotates synchronously with the turntable 21 and realizes high-precision clamping of the gland packing main body 5 through multi-point contact; thus improving the stability of the gland packing main body 5 during turning and drilling operations.

[0026] 3 includes a threaded column 31 vertically rotating at the center of the upper surface of the turntable 21 and telescopic rods 35 respectively sliding in the chute 24. A clamping block 37 is vertically slidably installed on the surface of the telescopic rod 35. The clamping block 37 is used to clamp the gland packing main body 5; the threaded column 31 is made of stainless steel 304 and is precision turned to ensure surface finish and thread meshing accuracy; the telescopic rod 35 is made of 45# steel and is matched with a high-precision bushing to achieve smooth up and down movement; the clamping block 37 can be finely adjusted on the surface of the telescopic rod 35 and avoids radial runout of the gland packing main body 5 during machining through multi-point contact; thus realizing the adjustable clamping requirements for the inner ring surface or the outer ring surface of the gland packing main body 5.

[0027] The lower surface of the turntable 21 is provided with a clamping block linkage mechanism 4, which is used to synchronously control the expansion and contraction of the four clamping blocks 37; the clamping block linkage mechanism 4 ensures the consistency of the four clamping blocks 37 when moving axially or radially through an overall linkage structure; when it is necessary to switch different processing surfaces of the leak-proof ring body 5, rapid contraction or expansion operations can be carried out; thus, high-precision processing requirements for the inner ring surface and the outer ring surface can be met without disassembling the leak-proof ring body 5.

[0028] Refer to Figures 3-7 , on both sides of the bottom of the fixed frame 1, bolt fixing grooves 11 are symmetrically opened. The leak-proof ring body 5 is placed on the upper surfaces of the four telescopic rods 35. Installation holes 36 are opened on the surfaces of the telescopic rods 35, and the clamping blocks 37 are slidably installed in the installation holes 36; high-strength bolts of model M12 can be installed inside the bolt fixing grooves 11 to firmly fix the fixed frame 1 on the machine tool or the base; the diameter of the leak-proof ring body 5 can be between 300 mm and 800 mm according to the design requirements and is made of corrosion-resistant alloy steel; the number of the installation holes 36 and the size of the clamping blocks 37 can be adjusted according to the specific specifications of the leak-proof ring body 5 and can maintain good centering during processing; thus, the efficiency and reliability of the leak-proof ring body 5 during processing are further improved.

[0029] Refer to Figures 3-4 , a rotating handle 32 is provided at the top of the threaded column 31. A lifting block 33 is screwed on the surface of the threaded column 31. Four first connecting rods 34 are evenly hinged on the surface of the lifting block 33. One ends of the four first connecting rods 34 away from the lifting block 33 are respectively hinged to the inner ends of the telescopic rods 35; the rotating handle 32 is made of aluminum alloy 6061 and is subjected to an anti-slip surface treatment; the lifting block 33 is made of 45# steel and is quenched and tempered to enhance wear resistance and hardness; the length of the first connecting rod 34 can be in the range of 50 mm to 100 mm and is connected to the lifting block 33 and the telescopic rod 35 through precision hinge bearings; thus, when the threaded column 31 is rotated, the lifting block 33 is driven to move axially and the position of the telescopic rod 35 is synchronously adjusted.

[0030] Refer to Figures 6-7 , anti-slip lines 371 are evenly arranged on the inner and outer surfaces of the clamping block 37. A connecting rod 38 is vertically arranged at the bottom of the clamping block 37. The connecting rod 38 penetrates through the lower surface of the telescopic rod 35. Two limiting plates 39 are arranged at the bottom of the connecting rod 38, and the two limiting plates 39 are respectively placed below the telescopic rod 35; the depth of the anti-slip lines 371 can be between 0.5 mm and 1.0 mm and can effectively increase the friction force with the leak-proof ring body 5; the connecting rod 38 is made of 40Cr material and is quenched and tempered to ensure sufficient strength; the two limiting plates 39 are made of high-quality alloy steel and maintain a gap of 0.2 mm to 0.5 mm from the telescopic rod 35 so as to move smoothly when the clamping block linkage mechanism 4 works; thus, a stable clamping effect on the leak-proof ring body 5 without damaging the surface is ensured.

[0031] Refer toFigures 8-9 , symmetrically arranged below the end of the extension rod 23 are lower extension plates 25. The clamp block linkage mechanism 4 includes a rotating gear 41 that rotates between the two lower extension plates 25 and a rack 44 that slides on the lower surface of the extension rod 23. A groove adapted to the rack 44 is provided on the lower surface of the extension rod 23. An oscillating plate 42 is provided on the outer surface of the rotating gear 41, and the oscillating plate 42 is placed below the telescopic rod 35; the lower extension plate 25 is made of Q235 carbon steel and fixed to the extension rod 23 by welding; the rotating gear 41 can be selected with a module of 2.5 or 3.0 and surface hardened with carburized steel; a sliding gap of 0.1 mm to 0.3 mm is reserved between the rack 44 and the groove to ensure smooth transmission and reduce wear; the oscillating plate 42 can swing at a certain angle driven by the rotating gear 41 and realize the control of the upward or downward movement of the connecting rod 38 and the clamping block 37; thus meeting the rapid switching requirements of the seal ring body 5 on different processing surfaces.

[0032] Refer to Figures 5-8 , a U-shaped groove 43 is provided on the surface of the oscillating plate 42. The oscillating plate 42 is placed between the two limiting plates 39, and the connecting rod 38 passes through the U-shaped groove 43; the depth of the U-shaped groove 43 is 5 mm to 10 mm and can accommodate the smooth passage of the connecting rod 38 during the up and down movement; the gap between the two limiting plates 39 and the oscillating plate 42 can be controlled at about 0.2 mm to ensure the precise position during the linkage of the clamping block 37; by controlling the horizontal swing of the oscillating plate 42 under the action of the rotating gear 41, the connecting rod 38 can be driven to make a vertical movement; thus realizing the synchronous lifting adjustment of the clamping block 37.

[0033] Refer to Figures 5-8 , the rack 44 passes through between the two lower extension plates 25, and the rack 44 meshes with the rotating gear 41; the pitch accuracy of the rack 44 can reach ISO5 level and is nitrided with alloy steel to improve the surface hardness; a tolerance of 0.1 mm to 0.2 mm is reserved between the inner wall of the lower extension plate 25 and the rack 44 to facilitate the smooth movement of the rack 44; when the rotating gear 41 rotates, it can drive the rack 44 to move horizontally at the same time and control the height of the connecting rod 38 and the clamping block 37 through the oscillating plate 42; thus meeting the precise adjustment of the clamping position during the processing of the turbine seal ring.

[0034] Refer to Figures 5-9, the lower surface of the turntable 21 is evenly provided with bosses 26. A rotating ring 45 is rotatably installed between multiple bosses 26. The rotating ring 45 coincides with the center of the turntable 21. The surface of the rotating ring 45 is evenly hinged with second connecting rods 46. One end of the second connecting rod 46 away from the rotating ring 45 is hinged to the end of the rack 44; the height of the boss 26 is 10 mm to 15 mm and is connected to the turntable 21 by an integral casting process; the diameter of the rotating ring 45 can be 60% to 70% of the diameter of the turntable 21 and is made of aluminum alloy 6061 material to reduce the overall weight; the second connecting rod 46 is made of 40Cr material and is connected to the rotating ring 45 and the rack 44 through ball joints to adapt to a certain angular deviation; thus, by rotating the rotating ring 45, the rack 44 is driven to move synchronously in the horizontal direction and the unified linkage of the clamping block 37 is realized.

[0035] Refer to Figure 3 and Figure 9 , an arc-shaped groove 22 is provided on the upper surface of the turntable 21. One side of the upper surface of the rotating ring 45 is screwed with a locking knob 47. The locking knob 47 passes through the arc-shaped groove 22; the center of the arc-shaped groove 22 is coaxial with the center of the turntable 21 and can form an adjustment angle within a range of 90 degrees to 180 degrees; the locking knob 47 is made of M8 stainless steel screw and is equipped with a plastic anti-slip knob head; one side of the surface of the rotating ring 45 is matched with the locking knob 47 through threads and can lock the clamping block linkage mechanism 4 at a specified angle after positioning; thus, a more convenient positioning function is provided when adjusting the machining of the outer ring surface or the inner ring surface of the anti-leakage ring main body 5.

[0036] Embodiment 2: Improve the flexibility of the fixing method Embodiment description: The purpose of this embodiment is to improve the flexibility of the fixing method of the support device for machining the anti-leakage ring of the water turbine. For this reason, a telescopic clamping mechanism and a clamping block linkage mechanism are arranged on the turntable, which can adjust the inner ring surface and the outer ring surface of the anti-leakage ring main body simultaneously during clamping. The turntable 21 is made of 45 steel and is quenched and tempered to ensure high strength and wear resistance. The telescopic clamping mechanism includes a threaded column 31, a lifting block 33 and a telescopic rod 35. Among them, the threaded column 31 is made of stainless steel 304 to ensure the surface finish and the thread meshing accuracy. The rotary drive motor 12 is of Y series with a power of 3.0 kW and a speed of 1450 revolutions per minute.

[0037] Experimental data:

[0038] Experimental control data analysis: Compared with the traditional device, after adopting the device of the present invention, the eccentricity of the anti-leakage ring main body is significantly reduced, and the clamping force and stability are improved. The processing time is reduced by about 5% to 10% under the same conditions.

[0039] Embodiment 3: Improve the coaxiality Example Description: This embodiment aims to improve the coaxiality of the machining support device for the water turbine gland packing. By uniformly arranging four extension rods 23 on the outer side of the turntable 21 and adopting the telescopic rod 35 composed of the precision threaded column 31 and the lifting block 33, it can ensure that the gland packing body is strictly concentric with the rotation axis of the turntable during clamping. The telescopic rod 35 is made of 45# steel and its surface is quenched. The rotation stability of the turntable 21 is ensured by the cooperation of the rotation drive motor 12 and the turntable.

[0040] Experimental Data:

[0041] Analysis of Experimental Control Data: Experiments show that by adopting the device of the present invention, the coaxiality error of the gland packing body is controlled within 0.003 mm, which is significantly better than the error range (0.01 mm) of the traditional device. At the same time, the machining accuracy is improved to within 3μm, meeting the requirements of high-precision machining.

[0042] Example 4: Improving Clamping Stability Example Description: This embodiment optimizes the clamping stability and adopts structures such as the anti-slip thread 3° connecting rod 38 and the limiting plate 39 to improve the stability of the clamping block. Anti-slip threads 371 are uniformly arranged on the inner and outer sides of the clamping block 37, and the connection method between the clamping block and the telescopic rod ensures stability through precise fit. The sliding property of the telescopic rod 35 is ensured by the design of the precision shaft sleeve, ensuring uniform clamping force during machining and avoiding the offset or loosening of the gland packing body caused by the machining force.

[0043] Experimental Data:

[0044] Analysis of Experimental Control Data: After comparing the device of the present invention with the traditional device, the clamping force is around 600N, and the deviation amount and vibration amplitude are controlled to the minimum, showing extremely high machining stability, especially stronger stability during high-load machining.

[0045] Example 5: Simplifying Adjustment Operations Example Description: This embodiment optimizes the operation simplicity. By using the rotating gear 41 and the toothed rod 44 for linkage adjustment and combining with the rotating ring 45 and the locking knob 47, the position of the clamping block can be quickly adjusted without disassembling the device. The tooth pitch of the rotating gear 41 is designed as module 3 and its surface is strengthened by carburizing steel. By adjusting the rotating ring 45, the precise positioning and contraction of the clamping block 37 are driven, simplifying the operation process and improving the machining efficiency.

[0046] Experimental data:

[0047] Analysis of experimental control data: By rotating the gear and locking knob to adjust the device, the position accuracy of the clamping block is controlled within 0.1 mm. Compared with the traditional device, the adjustment time is reduced by about 15%, and the processing time is also shortened.

[0048] The working principle of the present invention is as follows: When in use, first, the overall fixation of the fixing frame 1 is maintained through the cooperation of the bolt and the bolt fixing groove 11. Then, the main body 5 of the anti-leakage ring to be processed is hoisted and placed on the surfaces of the four telescopic rods 35. Rotate the rotating handle 32 to control the rotation of the threaded column 31, and then control the lifting block 33 to move axially up and down. The telescopic rod 35 slides inside the sliding groove 24 and is limited by the sliding groove 24. When the lifting block 33 moves axially, the telescopic rod 35 can be controlled to move through the first connecting rod 34 to adjust the position of the mounting hole 36. When pulling the telescopic rod 35 closer, the four clamping blocks 37 can be moved inward, and then the outer ring surface of the main body 5 of the anti-leakage ring is squeezed and fixed. Control its rotation through the rotating drive motor 12 to process the inner ring surface of the main body 5 of the anti-leakage ring. After processing, the four clamping blocks 37 are moved downward through the clamp linkage mechanism 4 so that they no longer exceed the upper surface of the telescopic rod 35. Then, control the movement of the telescopic rod 35 to move the mounting hole 36 to the inside of the main body 5 of the anti-leakage ring. Then, control the clamping block 37 to move upward, and then control the telescopic rod 35 to push outward to squeeze the inner ring surface of the main body 5 of the anti-leakage ring, which is convenient for processing the outer ring surface of the main body 5 of the anti-leakage ring. Whether it is clamping the inner ring surface or the outer ring surface, centering clamping can be achieved, so that the main body 5 of the anti-leakage ring after clamping is concentric with the rotation axis of the turntable 21. Thus, without disassembling the main body 5 of the anti-leakage ring, the clamping method can be adjusted according to different processing surfaces, improving the stability and convenience during the machining of the main body 5 of the anti-leakage ring; The clamp linkage mechanism 4 can synchronously control the up and down telescoping of the four clamping blocks 37. When controlling, loosen the locking knob 47 so that the locking knob 47 moves along the trajectory of the arc-shaped groove 22, and then control the rotation of the bottom rotating ring 45. When the rotating ring 45 rotates, the toothed rod 44 is synchronously controlled to move through the second connecting rod 46. Since the toothed rod 44 meshes with the rotating gear 41, when the toothed rod 44 moves, the swing plate 42 can be driven to swing at a certain angle. The swing plate 42 is placed between the two limiting plates 39. Therefore, when the swing plate 42 swings, the connecting rod 38 can be controlled to move up and down. When the toothed rod 44 is controlled to move outward through the rotating ring 45, at this time, the swing plate 42 swings downward to control the clamping block 37 to move downward. On the contrary, the clamping block 37 can be controlled to move upward to achieve synchronous control of the four clamping blocks 37, facilitating the convenience when adjusting different clamping surfaces of the main body 5 of the anti-leakage ring.

[0049] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in the art without special description and limitation.

Claims

1. A machining support device for a water turbine gland packing ring, comprising a fixing frame (1) and a gland packing ring main body (5), characterized in that: A rotating mechanism (2) is provided on the upper surface of the fixing frame (1), the rotating mechanism (2) comprising a rotating disk (21) mounted on the output shaft of the rotating drive motor (12), the rotating mechanism (2) being used to rotate the leak-proof ring body (5); Four extension rods (23) are evenly arranged on the outside of the rotating disk (21), the extension rods (23) extend beyond the outside of the rotating disk (21), a slide groove (24) is provided on the upper surface of the extension rods (23), and a telescopic clamping mechanism (3) is provided on the upper surface of the rotating disk (21), the telescopic clamping mechanism (3) is used to clamp and fix the leak-proof ring body (5); The telescopic clamping mechanism (3) comprises a threaded column (31) vertically rotating at the center of the upper surface of the turntable (21) and telescopic rods (35) respectively sliding in the slide grooves (24), and a clamping block (37) is vertically slidably mounted on the surface of the telescopic rod (35), and the clamping block (37) is used to clamp the leak-proof ring body (5); A clamping block linkage mechanism (4) is provided on the lower surface of the rotating disk (21), and the clamping block linkage mechanism (4) is used to synchronously control the extension and retraction of the four clamping blocks (37).

2. The machining support device for a water turbine gland packing ring according to claim 1, characterized in that: Bolt fixing grooves (11) are symmetrically provided on both sides of the bottom of the fixing frame (1). The leak-proof ring body (5) is placed on the upper surface of the four telescopic rods (35). The surfaces of the telescopic rods (35) are provided with mounting holes (36). The clamping blocks (37) are slidably installed in the mounting holes (36).

3. The machining support device for a water turbine gland packing ring according to claim 1, characterized in that: A rotating handle (32) is provided at the top of the threaded column (31); a lifting block (33) is screwed onto the surface of the threaded column (31); four first connecting rods (34) are evenly connected to the surface of the lifting block (33); and one end of the four first connecting rods (34) facing away from the lifting block (33) is hinged to the inner end of the telescopic rod (35).

4. The machining support device for a water turbine gland packing ring according to claim 1, characterized in that: The inner and outer surfaces of the clamping block (37) are evenly provided with anti-slip grooves (371); a connecting rod (38) is vertically provided at the bottom of the clamping block (37); the connecting rod (38) passes through the lower surface of the telescopic rod (35); two limit plates (39) are provided at the bottom of the connecting rod (38); the two limit plates (39) are respectively placed below the telescopic rod (35).

5. The machining support device for a water turbine gland packing ring according to claim 4, characterized in that: A lower extension plate (25) is symmetrically arranged below the end of the extension rod (23); the clamping block linkage mechanism (4) comprises a rotating gear (41) rotating between the two lower extension plates (25) and a gear rod (44) sliding on the lower surface of the extension rod (23); a groove matching the gear rod (44) is provided on the lower surface of the extension rod (23); a swing plate (42) is arranged on the outer side of the surface of the rotating gear (41); and the swing plate (42) is placed below the telescopic rod (35).

6. The machining support device for a water turbine gland packing ring according to claim 5, characterized in that: A U-shaped groove (43) is provided on the surface of the swing plate (42); the swing plate (42) is placed between the two limit plates (39); and the connecting rod (38) passes through the U-shaped groove (43).

7. The machining support device for a water turbine gland packing ring according to claim 5, characterized in that: The gear rod (44) passes through between the two lower extension plates (25), and the gear rod (44) and the rotating gear (41) are meshed with each other.

8. The machining support device for a water turbine gland packing ring according to claim 7, characterized in that: Bosses (26) are evenly arranged on the lower surface of the rotating disk (21), a rotating ring (45) is rotatably mounted between the plurality of bosses (26), the rotating ring (45) coincides with the center of the rotating disk (21), second connecting rods (46) are evenly hinged on the surface of the rotating ring (45), and one end of the second connecting rod (46) facing away from the rotating ring (45) is hinged to the end of the gear rod (44).

9. The machining support device for a water turbine gland packing ring according to claim 8, characterized in that: An arc-shaped groove (22) is formed on the upper surface of the rotating disk (21), and a locking knob (47) is screwed on one side of the upper surface of the rotating ring (45), wherein the locking knob (47) passes through the arc-shaped groove (22).

Images