Turbine blade root arc measuring device

Abstract

The utility model belongs to the technical field of turbine blade detection, and particularly relates to a turbine blade root arc measuring device which comprises a base. Positioning plates are slidably mounted at the two ends of the interior of the sliding groove, two sliding holes are formed in one side of the lower end of each positioning plate, sliding blocks are slidably mounted in the sliding holes, clamping plates are fixedly mounted at one ends of the sliding blocks, an adjusting box is fixedly mounted on one side of the center of the upper portion of the support, and a lead screw is rotatably mounted in the adjusting box; a sliding seat is arranged in the adjusting box and slidably mounted on the lead screw, a sliding rail is fixedly mounted at the bottom of the sliding seat, a fixing block is slidably mounted in the sliding rail, a second air cylinder is fixedly mounted at the bottom of the fixing block, a fixing seat is fixedly mounted on a piston rod of the second air cylinder, and a lever indicator is fixedly mounted on the fixing seat. By using the measuring device provided by the utility model, the accurate measurement of the blade root arc of the turbine blade can be realized, and the measuring efficiency and precision are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine blade detection technical field, concretely is a steam turbine blade blade root arc measuring device. BACKGROUND

[0002] Steam turbine is widely used in thermal power plant, nuclear power plant, warship, chemical industry, metallurgy and transportation and so on important field.

[0003] The steam turbine blade blade root arc measuring device uses the principle of measurement: first, place the blade on the workbench and fix it with the clamping device, then adjust the position of the slide and the height of the column, so that the lever dial gauge measuring head contacts the blade root arc, reads the lever dial gauge reading, and the size and shape information of the blade root arc can be obtained.

[0004] The shape of the blade root arc of the steam turbine blade is often complex, and the traditional measurement method may need to adjust the measurement position and angle several times to obtain complete measurement data. This not only increases the measurement time, but also may introduce new errors due to multiple adjustments. Utility model content

[0005] In order to make up for the deficiency of the prior art, the shape of the blade root arc of the steam turbine blade is often complex, and the traditional measurement method may need to adjust the measurement position and angle several times to obtain complete measurement data. This not only increases the measurement time, but also may introduce new errors due to multiple adjustments.

[0006] The utility model solves its technical problem adopts the technical scheme: A steam turbine blade blade root arc measuring device, including the base, Fixedly installed with the support on the base upper portion, The support top fixedly installed with the sliding slot, The inside both ends of sliding slot are slidably installed with the locating plate, The upper end of locating plate is equipped with the threaded hole, And its lower end one side is equipped with two slide holes, The inside of slide hole is slidably installed with the sliding block, The both ends of sliding block all run through the locating plate, And its outer end rotatably installs the connecting rod, Another end fixedly installed with the clamping plate, The upper central side of support is fixedly installed with the adjusting box, The inside of adjusting box is rotatably installed with the screw rod, The inside of adjusting box is slidably installed with the sliding seat on the screw rod, The bottom of sliding seat is fixedly installed with the sliding rail, The inside of sliding rail is slidably installed with the fixed block, One end of sliding rail is fixedly installed with the third air cylinder, The piston rod of third air cylinder is fixedly connected on the fixed block, The bottom of fixed block is fixedly installed with the second air cylinder, The piston rod of second air cylinder is fixedly installed with the fixed seat, The fixed seat is fixedly installed with the lever dial gauge, through a series of innovative design and technical scheme, realized the quick, accurate, automatic measurement of steam turbine blade blade root arc, improved the precision and efficiency of measurement, reduced the operation difficulty and error risk.

[0007] Preferably, one end of the sliding slot is fixedly installed with a first motor, the inside of the sliding slot is provided with a bidirectional screw rod, both ends of the bidirectional screw rod are rotatably installed in the inside of the sliding slot, the upper end of the locating plate is slidably installed on both ends of the bidirectional screw rod respectively, the rotating shaft of the first motor is fixedly connected with one end of the bidirectional screw rod, the bidirectional screw rod is driven to rotate by the first motor, which can synchronously drive the two locating plates to move in opposite or same directions in the sliding slot, realizing the quick and automatic positioning of the steam turbine blade, reducing the time and error of manual adjustment.

[0008] Preferably, the lower end of the locating plate is fixedly installed with a first air cylinder on the outside, a mounting seat is fixedly installed on the piston rod of the first air cylinder, the other end of the connecting rod is rotatably installed on the mounting seat respectively, the position of the mounting seat and the connecting rod can be adjusted by the extension and contraction of the first air cylinder, thereby driving the clamping plate to clamp or release the blade, realizing the flexible and stable clamping of the blade.

[0009] Preferably, one end of the adjusting box is fixedly installed with a second motor, the rotating shaft of the second motor is fixedly connected with one end of the screw rod, the screw rod is driven to rotate by the second motor, which can drive the sliding seat and the lever dial gauge to move in the direction of the screw rod in the adjusting box, realizing the automatic adjustment of the measurement position.

[0010] Preferably, the inside of the support is provided with a roller conveyor fixedly installed on the upper portion of the base, both ends of the roller conveyor penetrate through the support and extend to the upper portion of both ends of the base, the blade can be conveyed by the roller conveyor, which can reduce the time and labor of manual carrying, improving the overall efficiency of measurement.

[0011] Preferably, the base is centrally provided with through holes on both sides, and a U-shaped plate is fixedly installed at the bottom of the base below the through holes, a sleeve is fixedly installed at the inner bottom of the U-shaped plate, a sliding rod is slidably installed in the sleeve, a double-action air cylinder is fixedly installed at the top of the sliding rod, a lifting plate is arranged above the double-action air cylinder, connecting seats are fixedly installed at both ends of the double-action air cylinder, supporting rods are rotatably installed on the upper and lower sides of the connecting seats, and the other ends of the two supporting rods above the connecting seats are rotatably installed at the bottom of the lifting plate, and the other ends of the other two supporting rods are rotatably installed at the inner bottom of the U-shaped plate.

[0012] The utility model has the advantages that:

[0013] 1. The utility model discloses a turbine blade root arc measurement device, which comprises a base, a roller conveyor, a double-action air cylinder, a lifting plate, a connecting rod, a first air cylinder, a slide block, a clamping plate, a first motor, a slide, a slide seat, a slide rod, a second motor, a screw rod, a slide block, a clamping plate, a second air cylinder, a lever dial gauge, a third air cylinder and a second air cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0015] Figure 1 It is a side structure schematic view of the measuring device.

[0016] Figure 2 Structure diagram of the other side of the measuring device;

[0017] Figure 3 Structure diagram of the fixing device;

[0018] Figure 4 Structure diagram of the measuring mechanism;

[0019] Figure 5 Structure diagram of the lifting mechanism.

[0020] In the figure: 1, base; 2, support; 3, sliding groove; 4, bidirectional screw; 5, first motor; 6, positioning plate; 7, sliding block; 8, clamping plate; 9, connecting rod; 10, mounting seat; 11, first air cylinder; 12, adjusting box; 13, second motor; 14, screw; 15, sliding seat; 16, sliding rail; 17, fixed block; 18, third air cylinder; 19, second air cylinder; 20, fixed seat; 21, lever dial gauge; 22, roller conveyor; 23, lifting plate; 24, support rod; 25, U-shaped plate; 26, sleeve; 27, sliding rod; 28, bidirectional air cylinder; 29, connecting seat. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figures 1-5As shown, a steam turbine blade root arc measuring device, including base 1; the base 1 upper fixedly installed with support 2, the support 2 top fixedly installed with chute 3, the chute 3 inside both ends are slidably installed with positioning plate 6, the positioning plate 6 upper end are all provided with threaded hole, and its lower end one side are all provided with two sliding holes, sliding hole inside slidably installed with sliding block 7, the sliding block 7 both ends all penetrate positioning plate 6, and its outer end rotatably installed with connecting rod 9, additionally one end fixedly installed with clamping plate 8, the support 2 upper central one side fixedly installed with adjusting box 12, the adjusting box 12 inside rotatably installed with lead screw 14, the adjusting box 12 inside is provided with sliding seat 15 and is slidably installed on lead screw 14, the sliding seat 15 bottom fixedly installed with slide rail 16, the slide rail 16 inside slidably installed with fixed block 17, the slide rail 16 one end fixedly installed with third air cylinder 18, the third air cylinder 18 piston rod is fixedly connected on fixed block 17, the fixed block 17 bottom fixedly installed with second air cylinder 19, the second air cylinder 19 piston rod is fixedly installed with fixed seat 20 on, the fixed seat 20 is fixedly installed with lever dial gauge 21; When using the measuring device to measure the steam turbine blade root arc, place the blade on the upper part of the conveying roller of the roller conveyor 22, then start the roller conveyor 22 to transport the blade to the support 2 below, start the bidirectional cylinder 28, the bidirectional cylinder 28 pushes the lifting plate 23 through the gap between the conveying rollers through the supporting rod 24, lifts the blade to the middle of the lower end of the two positioning plates 6, starts the first motor 5 to drive the bidirectional screw 4 to rotate, the bidirectional screw 4 drives the positioning plate 6 to relatively slide in the chute 3, so that the distance between the positioning plates 6 is equal to the width of the blade, start the first air cylinder 11, the first air cylinder 11 piston rod pushes the mounting seat 10 to move outward, the mounting seat 10 pulls the sliding block 7 to relatively slide in the positioning plate 6 through the connecting rod 9, drives the clamping plate 8 to clamp and fix the upper and lower sides of the blade, starts the second motor 13 to drive the lead screw 14 to rotate, the lead screw 14 drives the sliding seat 15 to slide in the adjusting box 12, at the same time, the sliding seat 15 drives the lever dial gauge 21 to move, adjusts the longitudinal position of the lever dial gauge 21 above the base 1, then starts the third air cylinder 18 and the second air cylinder 19, the third air cylinder 18 drives the fixed block 17 to slide in the slide rail 16, at the same time, the fixed block 17 drives the lever dial gauge 21 to move horizontally, so that the lever dial gauge 21 moves to the upper side of the blade root, the second air cylinder 19 drives the lever dial gauge 21 to move downward through the fixed seat 20, so that the needle of the lever dial gauge 21 contacts with the blade root, observes the reading of the lever dial gauge 21, sets as the origin, then moves the lever dial gauge 21 to measure the blade root arc.

[0023] The first motor 5 is fixedly installed at one end of the chute 3, the bidirectional screw rod 4 is arranged in the chute 3, both ends of the bidirectional screw rod 4 are rotatably installed in the chute 3 through bearings, the positioning plates 6 are slidably installed at the upper ends of the bidirectional screw rod 4, and the rotating shaft of the first motor 5 is fixedly connected with one end of the bidirectional screw rod 4.

[0024] The first air cylinders 11 are fixedly installed at the lower ends of the positioning plates 6, the mounting seats 10 are fixedly installed on the piston rods of the first air cylinders 11, and the other ends of the connecting rods 9 are rotatably installed on the mounting seats 10.

[0025] The second motor 13 is fixedly installed at one end of the adjusting box 12, and the rotating shaft of the second motor 13 is fixedly connected with one end of the screw rod 14.

[0026] The roller conveyor 22 is fixedly installed on the upper portion of the base 1, and both ends of the roller conveyor 22 extend to the upper portions of both ends of the base 1 through the support 2.

[0027] The bottom base 1 is provided with a through hole on both sides of the center, and a U-shaped plate 25 is fixedly installed on the bottom of the bottom base 1 below the through hole. A sleeve 26 is fixedly installed on the inner bottom of the U-shaped plate 25. A sliding rod 27 is slidably installed in the sleeve 26. A double-action air cylinder 28 is fixedly installed on the top end of the sliding rod 27. A lifting plate 23 is arranged above the double-action air cylinder 28. Connecting seats 29 are fixedly installed on both ends of the double-action air cylinder 28. Support rods 24 are rotatably installed on the upper and lower sides of the connecting seats 29. The other ends of the two support rods 24 above the connecting seats 29 are rotatably installed on the bottom of both ends of the lifting plate 23. The other ends of the other two support rods 24 are rotatably installed on the inner bottom of both ends of the U-shaped plate 25.

[0028] When the measuring device is used to measure the blade root arc of the steam turbine blade, the blade is placed on the upper part of the conveying roller of the roller conveyor 22, and then the roller conveyor 22 is started to transport the blade to the bottom of the support 2. The double-action air cylinder 28 is started to drive the connecting seat 29 to move away from both ends of the double-action air cylinder 28, and at the same time drive the support rod 24 to expand. The support rod 24 pushes the lifting plate 23 to pass through the gap between the conveying rollers under the action of the U-shaped plate 25, and lifts the blade to the middle of the lower end of the two positioning plates 6.

[0029] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A turbine blade root fillet measuring device, characterised in that: The utility model relates to a kind of adjustable base for supporting and positioning, including base (1);The bracket (2) is fixedly installed on the upper portion of the base (1), the bracket (2) top is fixedly installed with sliding slot (3), the inside both ends of the sliding slot (3) are slidably installed with locating plate (6), the upper end of the locating plate (6) is equipped with threaded hole, and its lower end one side is equipped with two sliding holes, sliding block (7) is slidably installed in sliding hole, the both ends of the sliding block (7) are all penetrated locating plate (6), and its outer end is rotatably installed with connecting rod (9), and the other end is fixedly installed with clamping plate (8), the bracket (2) upper portion central one side is fixedly installed with adjusting box (12), the adjusting box (12) is rotatably installed with screw rod (14), the inside of the adjusting box (12) is provided with sliding seat (15) slidingly installed on screw rod (14), the bottom of the sliding seat (15) is fixedly installed with slide rail (16), the inside of the slide rail (16) is slidably installed with fixed block (17), one end of the slide rail (16) is fixedly installed with third air cylinder (18), the piston rod of the third air cylinder (18) is fixedly connected on fixed block (17), the bottom of the fixed block (17) is fixedly installed with second air cylinder (19), the piston rod of the second air cylinder (19) is fixedly installed with fixed seat (20), the fixed seat (20) is fixedly installed with lever dial gauge (21).

2. A device for measuring the fillet of a blade root of a turbine blade according to claim 1, characterized in that: One end of the sliding slot (3) is fixedly installed with first motor (5), the inside of the sliding slot (3) is provided with bidirectional screw rod (4), the both ends of the bidirectional screw rod (4) are rotatably installed in the inside of the sliding slot (3), the upper end of the locating plate (6) is slidably installed on the both ends of bidirectional screw rod (4) respectively, the rotating shaft of the first motor (5) is fixedly connected with one end of bidirectional screw rod (4).

3. The device for measuring the fillet of a blade root of a steam turbine according to claim 1, characterized in that: The lower end of the locating plate (6) is fixedly installed with first air cylinder (11) outside, the piston rod of the first air cylinder (11) is fixedly installed with mounting seat (10), the other end of the connecting rod (9) is rotatably installed on mounting seat (10) respectively.

4. The turbine blade root arc measuring device of claim 1, wherein: One end of the adjusting box (12) is fixedly installed with second motor (13), the rotating shaft of the second motor (13) is fixedly connected with one end of screw rod (14).

5. The turbine blade root arc measuring device of claim 1, wherein: The inside of the bracket (2) is provided with roller conveyor (22) fixedly installed on the upper portion of the base (1), the both ends of the roller conveyor (22) are all penetrated bracket (2) and extend to the upper portion of the both ends of the base (1).

6. A turbine blade root arc measuring device according to claim 1, wherein: The base (1) is provided with a through hole on both sides of the center, and a U-shaped plate (25) is fixedly installed at the bottom of the base (1) below the through hole. A sleeve (26) is fixedly installed at the inner bottom of the U-shaped plate (25). A sliding rod (27) is slidingly installed in the sleeve (26). A two-way air cylinder (28) is fixedly installed at the top of the sliding rod (27). A lifting plate (23) is arranged above the two-way air cylinder (28). Connection seats (29) are fixedly installed at both ends of the two-way air cylinder (28). Support rods (24) are rotatably installed on the upper and lower sides of the connection seats (29). The other ends of the two support rods (24) above the connection seats (29) are rotatably installed at the bottom of the two ends of the lifting plate (23). The other ends of the other two support rods (24) are rotatably installed at the inner bottom of the two ends of the U-shaped plate (25).

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