Clamp for machining hydraulic turbine blade

Abstract

The utility model discloses a hydraulic type steam turbine blade machining clamp, which belongs to the technical field of steam turbine blade machining, and comprises two bases, a telescopic rod is connected between the two bases in a sliding manner, a supporting mechanism is fixedly connected above one base, and a clamping mechanism is fixedly connected above the other base. A supporting mechanism is fixedly connected to one base, a rotary clamping mechanism is rotationally connected to the interior of the supporting mechanism, a hydraulic cylinder is fixedly connected to the side end of each base, the output end of each hydraulic cylinder is rotationally connected with the corresponding rotary clamping mechanism, a blade to be machined is clamped by the output end of each rotary clamping mechanism, and a rotary clamping air cylinder is fixedly connected to the other base. By means of the rotary clamping mechanism and the rotary clamping air cylinder, the turbine blade can be clamped for high-strength application, the turbine blade can be machined in all directions through rotation, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine blade processing, in particular to a hydraulic steam turbine blade processing fixture. Background Art

[0002] Steam turbine blades are a general term for the steel used for the moving and static blades in steam turbines. Blades are key components of steam turbines and are also one of the most delicate and important components. They withstand high temperature, high pressure, huge centrifugal force, steam force, steam excitation force, corrosion and vibration, as well as water droplet erosion in the wet steam zone under extremely harsh conditions. Their aerodynamic performance, processing geometry, surface roughness, installation clearance, operating conditions, scaling and other factors all affect the efficiency and output of the steam turbine, while their structural design, vibration intensity and operating mode have a decisive influence on the safety and reliability of the unit.

[0003] There are many different types of turbine blade clamps on the market. The Chinese utility model with publication number CN221111419U discloses a new hydraulic turbine blade processing clamp. The turbine hydraulic clamp clamps the turbine blades through a plurality of hydraulic cylinders connected to the limiting parts to achieve a fixing effect. Although it can effectively clamp the turbine blades and meet high-intensity applications, in actual use, after the turbine blades are clamped, they need to be processed in all directions. The machine can only process one side of the turbine blade, and then the staff manually flips it over and processes other positions again, which cannot improve the processing efficiency. In addition, the turbine blade clamp is only for one type of turbine blade and cannot process different types of turbine blades. The effect is too simple.

[0004] Therefore, it is urgent to provide a hydraulic steam turbine blade processing fixture to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a hydraulic steam turbine blade processing fixture.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a hydraulic turbine blade processing fixture, including two bases, a telescopic rod is slidably connected between the two bases, a support mechanism is fixedly connected to the top of one of the bases, a rotary clamping mechanism is rotatably connected inside the support mechanism, a hydraulic cylinder is fixedly connected to the side end of the base, the output end of the hydraulic cylinder is rotatably connected to the rotary clamping mechanism, the output end of the rotary clamping mechanism clamps the blade to be processed, and a rotary clamping cylinder is fixedly connected to the other base, the output end of the rotary clamping cylinder is used to clamp the other end of the blade to be processed.

[0007] The utility model is further configured as follows: the support mechanism comprises a support frame fixed on one of the bases, a slide groove is provided inside the support frame, and two rotating disks are slidably installed in the slide groove.

[0008] Through the above technical solution, the two rotating disks can rotate stably inside the chute.

[0009] The present invention is further configured as follows: the fulcrums of the support frame are respectively fixed at two ends of one of the bases.

[0010] The above technical solution makes the overall structure simpler and stronger, and also facilitates quick combination with the combination joint.

[0011] The utility model is further configured as follows: the two rotating disks are in a semicircular shape as a whole, and the rotating disks can always drive the rotating column during rotation.

[0012] Through the above technical solution, the two rotating disks can achieve a stable balance during rotation, thereby driving the rotating column to rotate.

[0013] The present invention is further configured as follows: the rotary clamping mechanism includes two clamping arms and a main body, the main body is rotatably connected to the output end of the hydraulic cylinder, the clamping ends of the two clamping arms are fixedly connected to a multi-point clamping disc, the main body is provided with two front-to-back symmetrical rotating supports, the ends of the two clamping arms are respectively rotatably connected to the corresponding rotating supports, the middle parts of the two clamping arms are fixedly connected to a rotating column, and the two rotating columns are rotatably connected to the rotating disc.

[0014] Through the above technical solution, through the interaction of various components, the force pushing the main body forward can be converted into a force for the clamping arm to clamp inward, thereby clamping and fixing the turbine blades and achieving the effect of all-round processing of the turbine blades.

[0015] The utility model is further configured as follows: the multi-point clamping disc includes a side disc, a plurality of circular holes are opened inside the side disc, a cylinder is slidably connected in the circular hole, and a spring is fixedly connected to the end of the cylinder.

[0016] Through the above technical solution, different types of steam turbine blades can be more effectively reinforced, ensuring the stability of the steam turbine blades during processing and improving product quality.

[0017] The utility model is further configured as follows: the rotary clamping cylinder includes a chassis fixed to another base therein, a shell is fixedly connected to the chassis, one end of the shell is rotatably connected to a rotating shaft, one end of the rotating shaft is slidably connected to a plurality of clamping arms 2, the plurality of clamping arms 2 are used to clamp the ends of the blades to be processed, and the front end of the shell is fixedly connected to a ventilation pipe.

[0018] Through the above technical solution, the turbine blades can be effectively clamped and the turbine blades can be driven to rotate for all-round processing.

[0019] 1. The utility model can clamp the turbine blades for high-strength applications through the rotary clamping mechanism and the rotary clamping cylinder, and can perform all-round processing on the turbine blades through rotation, thereby speeding up work efficiency.

[0020] 2. The utility model can effectively clamp different types of turbine blades through the multi-point chuck, so that the turbine blades themselves can be more stable when processing the turbine blades, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0022] Figure 2 This is a structural diagram of the support mechanism of the utility model;

[0023] Figure 3 This is a partial enlarged view of the rotary clamping mechanism of the utility model;

[0024] Figure 4 It is a partial cross-sectional view of the multi-point chuck of the utility model.

[0025] In the figure: 1. Base; 2. Telescopic rod; 3. Support mechanism; 4. Rotary clamping mechanism; 5. Hydraulic cylinder; 6. Blade to be processed; 7. Rotary clamping cylinder; 31. Support frame; 32. Slide; 33. Rotating disk; 41. Clamping arm 1; 42. Multi-point chuck; 43. Rotating support; 44. Main body; 45. Rotary column; 421. Side plate; 422. Round hole; 423. Cylinder; 424. Spring; 71. Chassis; 72. Shell; 73. Rotating axis; 74. Clamping arm 2; 75. Ventilation pipe. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0027] See also Figure 1-Figure 4The fulcrums of the support frame 31 are respectively fixed at the two ends of one of the bases 1, and the two rotating disks 33 are slidably installed in the chute 32.

[0028] like Figure 3 As shown, the support mechanism 3 is internally rotatably connected with a rotary clamping mechanism 4, which includes two clamping arms 41 and a main body 44. The main body 44 is rotatably connected to the output end of the hydraulic cylinder 5. The clamping ends of the two clamping arms 41 are fixedly connected to the multi-point clamping disc 42. The main body 44 is provided with two front and rear symmetrical rotating supports 43. The ends of the two clamping arms 41 are rotatably connected to the corresponding rotating supports 43 respectively. The middle parts of the two clamping arms 41 are fixedly connected with a rotary column 45, and the two rotary columns 45 are rotatably connected to the rotating disc 33. The output end of the hydraulic cylinder 5 pushes the main body 44 to allow the clamping arms 41 on both sides to clamp the blades 6 to be processed. The rotary column 45 passing through the inner wall of the clamping arm 41 is connected to the rotating disc 33 of the support frame 31, so the rotary column 45 always remains stable. The rotating support 43 installed at the end of the clamping arm 41 can convert the force of the main body 44 pushing forward into the force of the clamping arm 41 clamping inward, thereby clamping and fixing the blade 6 to be processed.

[0029] like Figure 4 As shown, the multi-point clamping disc 42 includes a side disc 421, and a plurality of circular holes 422 are opened inside the side disc 421. A cylinder 423 is slidably connected in the circular hole 422, and a spring 424 is fixedly connected to the end of the cylinder 423. The length of each cylinder 423 inside the side disc 421 can be changed by the expansion and contraction of the spring 424, and can achieve good and effective clamping according to the thickness and shape of different types of turbine blades, so that when the blade 6 to be processed is processed, the blade 6 itself can be more stable, thereby improving product quality.

[0030] like Figure 1 As shown, a hydraulic cylinder 5 is fixedly connected to the side end of the base 1 , and an output end of the hydraulic cylinder 5 is rotatably connected to a rotary clamping mechanism 4 , and an output end of the rotary clamping mechanism 4 clamps a blade 6 to be processed.

[0031] The other base 1 is fixedly connected to a rotary clamping cylinder 7, and the output end of the rotary clamping cylinder 7 is used to clamp the other end of the blade 6 to be processed. The rotary clamping cylinder 7 includes a chassis 71 fixed to the other base 1 therein, and a shell 72 is fixedly connected to the chassis 71. One end of the shell 72 is rotatably connected to a rotating shaft 73, and one end of the rotating shaft 73 is slidably connected to multiple clamping arms 74. Multiple clamping arms 74 are used to clamp the ends of the blade 6 to be processed. The front end of the shell 72 is fixedly connected to a ventilation pipe 75. The rotary clamping cylinder 7 rotates through the ventilation pipe 75 on the shell 72, and the clamping arm 74 installed on the rotating shaft 73 is clamped through the ventilation pipe 75. When the machine needs to process the rest of the blade 6 to be processed, the rotating shaft 73 will drive the multiple clamping arms 74 holding the blade 6 to be processed to rotate together, and the chassis 71 is connected to the base 1 so that the rotary clamping cylinder 7 as a whole can achieve the effect of stable operation.

[0032] like Figure 1 As shown, during processing, the telescopic rod 2 is first manually adjusted to the appropriate position, so that the rotary clamping mechanism 4 and the rotary clamping cylinder 7 clamp the blade 6 to be processed, and the output end of the hydraulic cylinder 5 pushes the rotary clamping mechanism 4 to clamp the blade 6 to be processed. When one side is processed, the rotary clamping cylinder 7 clamps the end of the blade 6 to be processed and rotates, thereby driving the rotary clamping mechanism 4 to rotate together. The rotary clamping mechanism 4 can rotate more stably during the processing through the support frame 31, making its overall structure simpler and stronger.

[0033] When the utility model is in use, after the blade to be processed 6 is placed in the device, the telescopic rod 2 is first manually adjusted to a suitable position, so that the rotary clamping mechanism 4 and the rotary clamping cylinder 7 clamp the blade to be processed 6, and the rotary clamping cylinder 7 clamps the end of the blade to be processed 6. The chassis 71 is connected to the base 1, which can make the rotary clamping cylinder 7 as a whole achieve the effect of stable operation. After clamping both ends of the blade to be processed 6, it starts to be processed. When one side is processed, the rotary clamping mechanism 4 will release the blade to be processed 6, and the base 1 is extended by manually adjusting the telescopic rod 2. At this time, the rotary clamping cylinder 7 still clamps the end of the blade to be processed 6. At this time, the part of the blade to be processed that was previously clamped by the rotary clamping mechanism 4 is processed. After the processing is completed, the rotary clamping mechanism 4 clamps the blade to be processed 6 again through the telescopic rod 2. , then the rotary clamping cylinder 7 clamps the end of the blade to be processed 6 and rotates, thereby driving the rotary clamping mechanism 4 to rotate together. The rotary clamping mechanism 4 can rotate more stably during the processing through the support frame 31, making its overall structure simpler and stronger. When the blade to be processed 6 is completely processed, the part clamped by the rotary clamping mechanism 4 on the other side is processed again, and then the rotary clamping mechanism 4 releases the processed turbine blade, and the rotary clamping cylinder 7 will also release the clamping arm 2 74 through the vent pipe 75. Finally, the turbine blade is taken out and the next turbine blade is put in to perform the above-mentioned processing steps. The rotary clamping mechanism 4 and the rotary clamping cylinder 7 can clamp the blade to be processed 6 for high-intensity application, and the turbine blade can be processed in all directions through rotation, which speeds up work efficiency.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic steam turbine blade machining fixture comprising two bases (1), characterized in that: A telescopic rod (2) is slidably connected between the two bases (1); a support mechanism (3) is fixedly connected to the top of one of the bases (1); a rotary clamping mechanism (4) is rotatably connected inside the support mechanism (3); a hydraulic cylinder (5) is fixedly connected to the side end of the base (1); an output end of the hydraulic cylinder (5) is rotatably connected to the rotary clamping mechanism (4); the output end of the rotary clamping mechanism (4) clamps the blade (6) to be processed; a rotary clamping cylinder (7) is fixedly connected to the other base (1); the output end of the rotary clamping cylinder (7) is used to clamp the other end of the blade (6) to be processed.

2. A hydraulic steam turbine blade machining fixture according to claim 1, characterized in that: The support mechanism (3) comprises a support frame (31) fixed on one of the bases (1); a slide groove (32) is provided inside the support frame (31); and two rotating disks (33) are slidably mounted in the slide groove (32).

3. The hydraulic steam turbine blade machining fixture according to claim 2, characterized in that: The supporting points of the support frame (31) are respectively fixed at two ends of one of the bases (1).

4. The hydraulic steam turbine blade machining fixture according to claim 2, characterized in that: The two rotating disks (33) are semicircular in shape as a whole.

5. The hydraulic steam turbine blade machining fixture according to claim 2, characterized in that: The rotary clamping mechanism (4) includes two clamping arms (41) and a main body (44), wherein the main body (44) is rotatably connected to the output end of the hydraulic cylinder (5), the clamping ends of the two clamping arms (41) are fixedly connected to the multi-point clamping disc (42), and the main body (44) is provided with two front-to-back symmetrical rotating supports (43), the ends of the two clamping arms (41) are rotatably connected to the corresponding rotating supports (43), and the middle parts of the two clamping arms (41) are fixedly connected to a rotating column (45), and the two rotating columns (45) are rotatably connected to the rotating disc (33).

6. The hydraulic steam turbine blade machining fixture according to claim 5, characterized in that: The multi-point clamping disc (42) includes a side disc (421), a plurality of circular holes (422) are provided inside the side disc (421), a cylinder (423) is slidably connected in the circular hole (422), and a spring (424) is fixedly connected to the end of the cylinder (423).

7. The hydraulic steam turbine blade machining fixture according to claim 1, characterized in that: The rotary clamping cylinder (7) includes a chassis (71) fixed to another base (1) thereof, a housing (72) fixedly connected to the chassis (71), one end of the housing (72) being rotatably connected to a rotating shaft (73), one end of the rotating shaft (73) being slidably connected to a plurality of clamping arms (74), the plurality of clamping arms (74) being used to clamp the ends of the blades (6) to be processed, and a ventilation pipe (75) being fixedly connected to the front end of the housing (72).

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