Automatic hydraulic clamp for steam turbine blade maintenance

Abstract

The embodiment of the invention provides an automatic hydraulic clamp for steam turbine blade maintenance, which is characterized in that connecting grooves are formed in the two sides of a connecting plate, the connecting grooves are symmetrical about an electric hydraulic push rod, positioning pins are arranged on the side walls of the connecting grooves, two swing columns are arranged in a fixed connecting sleeve, and the two swing columns are connected with the electric hydraulic push rod. The top ends of the two swing columns are connected with the two positioning pins correspondingly, a baffle is arranged on the inner wall of the bottom of the fixed connecting sleeve, a moving opening is formed in the outer wall of the top of the baffle, positioning seats are fixedly connected to the outer walls of the swing columns, pins are arranged in the positioning seats, one end of a self-locking plate is connected with the positioning seats through the pins, and the other end of the self-locking plate is connected with the fixed connecting sleeve. And through arrangement of a stabilizing strip and a sliding groove, rotation of the movable mechanism is prevented, damage to the internal structure of the fixed connecting sleeve caused by torsion of the clamping side plate when the object is grabbed is reduced, and the stability of the movable mechanism is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of steam turbines, and in particular to an automatic hydraulic clamp for maintaining steam turbine blades. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blades to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power devices.

[0003] After searching the Chinese patent with publication number CN217371415U, a turbine blade positioning fixture is disclosed. When the spline is connected to the left driving gear, the driving gear drives the blade root fixture to rotate through a belt to complete the cutting and forming of the turbine blade. When the spline is connected to the right driving gear, the driving gear drives the adjusting screw to rotate by meshing with the driven control gear. The position of the moving frame is changed by the adjusting screw, and the positioning and fixing operation of the turbine blade is completed by the moving frame, thereby preventing the turbine blade from shaking during the rotation process, and facilitating the improvement of the processing stability of the turbine blade.

[0004] However, there are still defects in the above patent. When the automatic hydraulic clamp for turbine blades in the technology is in use, the clamping force is not stable enough and the clamping side plates are not flexible enough. Summary of the invention

[0005] The embodiment of the present invention aims to solve at least one of the technical problems existing in the prior art, and provides an automatic hydraulic clamp for maintaining turbine blades.

[0006] The embodiment of the present invention provides an automatic hydraulic clamp for turbine blade maintenance, comprising a fixed connecting sleeve, the top inner wall of the fixed connecting sleeve is fixedly connected to a parallel plate, a positioning hole is opened inside the parallel plate, an electric hydraulic push rod is arranged inside the positioning hole, the bottom outer wall of the parallel plate is fixedly connected to two fixed seats, and the two fixed seats are symmetrical about the electric hydraulic push rod, a rotating shaft is inserted inside the two fixed seats, a self-locking plate is arranged at the bottom of the fixed seat, and one end of the self-locking plate is connected to the rotating shaft, and a movable mechanism is arranged at the bottom end of the electric hydraulic push rod, and the movable mechanism includes a connecting plate, The connecting plate is welded on the bottom outer wall of the electric hydraulic push rod, and connecting grooves are provided on both sides of the connecting plate, and the two connecting grooves are symmetrical about the electric hydraulic push rod, and positioning pins are provided on the side walls of the two connecting grooves. Two swing columns are provided inside the fixed connecting sleeve, and the tops of the two swing columns are respectively connected to the two positioning pins, and a baffle is provided on the bottom inner wall of the fixed connecting sleeve, and a moving opening is provided on the top outer wall of the baffle. A positioning seat is fixedly connected to the outer wall of the swing column, and a pin is provided inside the positioning seat, and one end of the self-locking plate is connected to the positioning seat through the pin.

[0007] In some possible embodiments, a protective connecting sleeve is sleeved on an outer wall of one side of the swing column, and the protective connecting sleeve is located at the bottom end of the swing column.

[0008] In some possible embodiments, a clamping side plate is welded to the bottom outer wall of the swing column, an outer wall of one side of the clamping side plate is provided with an anti-slip protrusion, and the anti-slip protrusion is located on opposite sides of the two clamping side plates.

[0009] In some possible embodiments, a sliding groove is formed on one side outer wall of the connecting plate, a stabilizing bar is disposed on the top outer wall of the baffle, and a top end of the stabilizing bar is slidably connected to the sliding groove.

[0010] In some possible embodiments, a ventilation hole is opened on an outer wall of one side of the fixed connection sleeve, and an annular air-permeable mesh plate is arranged inside the ventilation hole.

[0011] In some possible embodiments, a connecting ring is provided on the top outer wall of the fixed connecting sleeve, a supporting top plate is fixedly connected to the inner wall of the connecting ring, the electric hydraulic push rod is inserted into the interior of the supporting top plate, two supporting columns are provided inside the fixed connecting sleeve, the two supporting columns are distributed on both sides of the supporting top plate, and the bottom outer walls of the two supporting columns are welded to the top of the parallel plate.

[0012] The automatic hydraulic clamp for steam turbine blade maintenance according to the embodiment of the present invention has the following beneficial effects:

[0013] 1. The automatic hydraulic clamp for turbine blade maintenance in the embodiment of the present invention is advantageous in that the two swing columns are relatively still after grasping the object through the self-locking plate, thereby forming a self-locking structure, facilitating the opening and closing of the two clamping side plates, and increasing the flexibility of the clamping side plates.

[0014] 2. The automatic hydraulic clamp for turbine blade maintenance in the embodiment of the present invention prevents the rotation of the movable mechanism by providing a stabilizing bar and a sliding groove, reduces the damage to the internal structure of the fixed connecting sleeve caused by the twisting of the clamping side plate when grasping an object, and improves the stability of the movable mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of an automatic hydraulic clamp for steam turbine blade maintenance proposed by the present invention;

[0017] Figure 2 A schematic diagram of the internal structure of an automatic hydraulic clamp for steam turbine blade maintenance proposed by the present invention;

[0018] Figure 3 The present invention is a partial structural schematic diagram of an automatic hydraulic clamp for steam turbine blade maintenance.

[0019] In the figure: 1 fixed connecting sleeve, 2 annular breathable mesh plate, 3 connecting ring, 4 electric hydraulic push rod, 5 supporting top plate, 6 supporting column, 7 parallel plate, 8 positioning hole, 9 fixed seat, 10 rotating shaft, 11 self-locking plate, 12 positioning seat, 13 baffle, 14 stabilizing bar, 15 movable mechanism, 16 protective connecting sleeve, 17 swing column, 18 clamping side plate, 19 anti-slip protrusion, 20 connecting plate, 21 connecting groove, 22 positioning pin, 23 sliding groove. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0021] Unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. "Including" or "comprising" used in the embodiments of the present invention neither limit the shapes, numbers, steps, actions, operations, components, originals and / or their groups mentioned, nor exclude the appearance or addition of one or more other different shapes, numbers, steps, actions, operations, components, originals and / or their groups, or the addition of these. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number and order of the indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0022] Unless otherwise specifically stated, the relative arrangement of the components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship, and the techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices shown should be considered as part of the authorized specification. In all examples shown and discussed here, any specific other examples may have different values. It should be noted that similar symbols and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the embodiments of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the embodiments of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in the embodiments of the present invention and the features of the different embodiments or examples, without contradiction.

[0024] Below, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described here.

[0025] Please also see Figures 1 to 3 The embodiment of the present invention relates to an automatic hydraulic clamp for steam turbine blades, comprising a fixed connection sleeve 1, a parallel plate 7 is fixedly connected to the top inner wall of the fixed connection sleeve 1, a positioning hole 8 is opened inside the parallel plate 7, an electric hydraulic push rod 4 is arranged inside the positioning hole 8, two fixed seats 9 are fixedly connected to the bottom outer wall of the parallel plate 7, and the fixed seats 9 are symmetrical about the electric hydraulic push rod 4, a rotating shaft 10 is inserted inside the two fixed seats 9, a self-locking plate 11 is arranged at the bottom of the fixed seat 9, the self-locking rod 11 is conducive to forming a self-locking structure to prevent the object from falling off during the clamping, and one end of the self-locking plate 11 is connected to the rotating shaft 10, and the bottom end of the electric hydraulic push rod 4 is provided with a movable mechanism 15, and the movable mechanism The structure 15 includes a connecting plate 20, which is welded to the bottom outer wall of the electric hydraulic push rod 4. Connecting grooves 21 are provided on both sides of the connecting plate 20, and the connecting grooves 21 are symmetrical about the electric hydraulic push rod 4. Positioning pins 22 are provided on the side walls of the connecting grooves 21. Two swing columns 17 are provided inside the fixed connecting sleeve 1, and the tops of the two swing columns 17 are respectively connected to the two positioning pins 22. A baffle 13 is provided on the bottom inner wall of the fixed connecting sleeve 1, and a moving opening is provided on the top outer wall of the baffle 13. A positioning seat 12 is fixedly connected to the outer wall of the swing column 17, and a pin is provided inside the positioning seat 12, and one end of the self-locking plate 11 is connected to the positioning seat 12 through the pin.

[0026] Furthermore, a clamping side plate 18 is welded to the bottom outer wall of the swing column 17, and an anti-slip protrusion 19 is provided on one side outer wall of the clamping side plate 18, and the anti-slip protrusion 19 is located on the relatively inner sides of the two clamping side plates 18. The anti-slip protrusion 19 is conducive to holding the object better.

[0027] Furthermore, a sliding groove 23 is opened on one side outer wall of the connecting plate 20, and a stabilizing bar 14 is provided on the top outer wall of the baffle 13, and the top end of the stabilizing bar 14 is slidably connected to the sliding groove 23. The stabilizing bar 14 prevents the connecting plate 20 from rotating, thereby avoiding damage to the internal structure by the swing column 17.

[0028] Furthermore, a ventilation hole is opened on one side outer wall of the fixed connection sleeve 1, and an annular air-permeable mesh plate 2 is arranged inside the ventilation hole. The annular air-permeable mesh plate 2 not only prevents the entry of debris, but also increases the air circulation inside the self-locking fixing device.

[0029] Furthermore, a connecting ring 3 is provided on the top outer wall of the fixed connecting sleeve 1, a supporting top plate 5 is fixedly connected to the inner wall of the connecting ring 3, an electric hydraulic push rod 4 is inserted into the inside of the supporting top plate 5, and two supporting columns 6 are provided inside the fixed connecting sleeve 1. The two supporting columns 6 are distributed on both sides of the supporting top plate 5, and the bottom outer walls of the two supporting columns 6 are welded to the top of the parallel plate 7.

[0030] Furthermore, a protective connecting sleeve 16 is sleeved on the outer wall of one side of the swing column 17, and the protective connecting sleeve 16 is located at the bottom end of the swing column 17. The protective connecting sleeve 16 improves the safety of the self-locking fixture and increases the service life of the self-locking fixture.

[0031] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic hydraulic clamp for steam turbine blade maintenance, comprising a fixed connection sleeve (1), characterized in that: A parallel plate (7) is fixedly connected to the top inner wall of the fixed connection sleeve (1), a positioning hole (8) is opened inside the parallel plate (7), an electric hydraulic push rod (4) is arranged inside the positioning hole (8), two fixed seats (9) are fixedly connected to the bottom outer wall of the parallel plate (7), and the two fixed seats (9) are symmetrical about the electric hydraulic push rod (4); a rotating shaft (10) is inserted into the inside of the two fixed seats (9), a self-locking plate (11) is arranged at the bottom of the fixed seat (9), and one end of the self-locking plate (11) is connected to the rotating shaft (10), and a movable mechanism (15) is arranged at the bottom end of the electric hydraulic push rod (4), and the movable mechanism (15) includes a connecting plate (20), and the connecting plate (20) is welded to the electric hydraulic push rod (4). On the bottom outer wall of the connecting plate (20), both sides of the connecting plate (20) are provided with connecting grooves (21), and the two connecting grooves (21) are symmetrical about the electric hydraulic push rod (4), and the side walls of the two connecting grooves (21) are provided with positioning pins (22), and two swing columns (17) are provided inside the fixed connecting sleeve (1), and the top ends of the two swing columns (17) are respectively connected to the two positioning pins (22); the bottom inner wall of the fixed connecting sleeve (1) is provided with a baffle (13), and the top outer wall of the baffle (13) is provided with a moving opening, and the outer wall of the swing column (17) is fixedly connected with a positioning seat (12), and the positioning seat (12) is provided with a pin inside, and one end of the self-locking plate (11) is connected to the positioning seat (12) through the pin.

2. The automatic hydraulic clamp for steam turbine blade maintenance according to claim 1, characterized in that: A protective connecting sleeve (16) is sleeved on an outer wall of one side of the swing column (17), and the protective connecting sleeve (16) is located at the bottom end of the swing column (17).

3. The automatic hydraulic clamp for steam turbine blade maintenance according to claim 1, characterized in that: A clamping side plate (18) is welded to the bottom outer wall of the swing column (17), and an anti-slip protrusion (19) is provided on one side outer wall of the clamping side plate (18), and the anti-slip protrusion (19) is located on opposite sides of the two clamping side plates (18).

4. An automatic hydraulic clamp for steam turbine blade maintenance according to any one of claims 1 to 3, characterized in that: A sliding groove (23) is formed on one side outer wall of the connecting plate (20), a stabilizing bar (14) is provided on the top outer wall of the baffle (13), and the top end of the stabilizing bar (14) is slidably connected to the sliding groove (23).

5. An automatic hydraulic clamp for steam turbine blade maintenance according to any one of claims 1 to 3, characterized in that: A ventilation hole is formed on one side outer wall of the fixed connection sleeve (1), and an annular air-permeable mesh plate (2) is arranged inside the ventilation hole.

6. An automatic hydraulic clamp for steam turbine blade maintenance according to any one of claims 1 to 3, characterized in that: The top outer wall of the fixed connection sleeve (1) is provided with a connection ring (3), the inner wall of the connection ring (3) is fixedly connected with a support top plate (5), the electric hydraulic push rod (4) is inserted into the inside of the support top plate (5), and two support columns (6) are provided inside the fixed connection sleeve (1), the two support columns (6) are distributed on both sides of the support top plate (5), and the bottom outer walls of the two support columns (6) are welded to the top of the parallel plate (7).

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