Clamping and supporting equipment for turbine blade polishing

Abstract

The utility model relates to the technical field of steam turbine blade production, in particular to clamping and supporting equipment for steam turbine blade polishing, which comprises a base, supporting frames, a clamping knob, a connecting shaft, a clamping seat, a motor, a sleeve, a socket, a blade and a supporting mechanism, the clamping rotary knob is in threaded connection with the top of the supporting frame at one end, the motor is installed on the outer side of the top of the supporting frame at the other end, and the connecting shaft is movably connected with the end of the clamping rotary knob. And in the polishing machining process, along with the fact that the motor drives the blade to rotate, the supporting mechanism can automatically adjust the supporting height, it is guaranteed that the supporting mechanism is attached to the bottom of the blade, the height of the supporting mechanism can be locked in the polishing machining process, and the situation that machining work is affected by blade deformation in the polishing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine blade production, in particular to a clamping and supporting device for polishing steam turbine blades. Background Art

[0002] The power blades are the key parts of the steam turbine and one of the most delicate and important parts. They are subjected to 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. Their structural design, vibration intensity and operating mode have a decisive influence on the safety and reliability of the unit.

[0003] After the power blades of the steam turbine are produced, their surfaces need to be effectively ground and polished. Since the blades have a certain elasticity and are long and narrow in structure, applying pressure during polishing can easily cause the blades to be compressed and produce elastic deformation, thus affecting the polishing operation. Therefore, it is necessary to effectively clamp the power blades while providing effective support for their bottom during the polishing process. The surface of the power blades is curved, so a support device is required that can automatically adjust the height and effectively lock it. Utility Model Content

[0004] The utility model aims at the defects in the prior art and provides a clamping and supporting device for polishing steam turbine blades.

[0005] The utility model is achieved through the following technical solutions:

[0006] The top end face of said sliding arm is fixedly provided with a toothed connecting strip which is cooperatively connected with said toothed connecting strip.

[0007] In a preferred embodiment of the present invention, one end of the clamping shaft passes through and extends to the outside of one side of the mounting tube, and a waist-shaped hole is opened on the outside of the mounting tube to match the clamping shaft;

[0008] The waist-shaped hole provides space for the clamping shaft on the surface of the rod to move up and down when the height of the rod is adjusted.

[0009] In a preferred embodiment of the present invention, the exterior of the clamping shaft is provided with a thread, the interior of the fastening knob is provided with a threaded hole that matches the exterior thread of the clamping shaft, and the exterior of the mounting tube is provided with a flat surface that facilitates locking of the fastening knob;

[0010] After tightening the tightening knob, the height of the insertion rod into the mounting tube can be effectively fixed, and the outer surface of the mounting tube increases the contact area between the inner side of the tightening knob and the mounting tube, thereby improving the locking effect.

[0011] In a preferred embodiment of the present invention, the bottom of the support block is an arc-shaped structure, and the inner side of the bottom of the connecting seat is provided with an arc groove that matches the arc groove;

[0012] The arc-shaped structure at the bottom of the support block fits into the arc groove at the bottom of the connecting seat, thereby providing effective support for the adjustment of the support block.

[0013] In a preferred embodiment of the present invention, a slot is provided on the inner side of the holder to match one end of the blade, and the top of the support block fits the bottom of the blade.

[0014] The beneficial effects of the utility model are:

[0015] The clamping and supporting equipment for polishing turbine blades can clamp and limit the two ends of the blades through the clamping seat and the socket, and adjust the blade angle through the rotation of the motor to facilitate polishing. During the polishing process, as the motor drives the blade to rotate, the support mechanism can automatically adjust the support height to ensure that it fits the bottom of the blade, and the height of the support mechanism can be locked during polishing to avoid blade deformation during polishing that affects the processing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the clamping and supporting device for polishing turbine blades of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of the clamping and supporting device for polishing turbine blades of the present invention;

[0018] Figure 3 The utility model is a schematic diagram of the support mechanism structure of the clamping support equipment for polishing turbine blades.

[0019] In the figure: 1. Base; 2. Support frame; 3. Clamping knob; 4. Connecting shaft; 5. Clamping seat; 6. Motor; 7. Sleeve; 8. Socket; 9. Blade; 10. Support mechanism; 101. Mounting tube; 102. Insert rod; 103. Clamping shaft; 104. Fastening knob; 105. Spring; 106. Connecting seat; 107. Support block. DETAILED DESCRIPTION

[0020] The following detailed description of preferred embodiments of the present invention, combined with the accompanying drawings, will facilitate understanding of the advantages and features of the present invention by those skilled in the art, thereby more clearly defining the scope of protection of the present invention. Directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are intended solely to refer to the directions in the accompanying drawings. Therefore, these directional terms are intended to illustrate and facilitate understanding of the present invention and are not intended to limit the present invention.

[0021] like Figure 1-3 The clamping support device for polishing a steam turbine blade shown in the figure includes a base 1, a support frame 2, a clamping knob 3, a connecting shaft 4, a clamping seat 5, a motor 6, a sleeve 7, a socket 8, a blade 9 and a supporting mechanism 10. The support frame 2 is fixedly arranged at both ends of the upper surface of the base 1, the clamping knob 3 is threadedly connected to the top of the support frame 2 at one end, the motor 6 is installed on the outside of the top of the support frame 2 at the other end, the connecting shaft 4 is movably connected to the end of the clamping knob 3, the clamping seat 5 is fixedly arranged at the end of the connecting shaft 4, the sleeve 7 is sleeved and fixed to the output end of the motor 6, the socket 8 is fixedly arranged at the top of the sleeve 7, and the blade 9 is clamped in the socket 8 Between the bracket 5, the support mechanism 10 is arranged at the bottom of the blade 9. The support mechanism 10 includes a mounting tube 101, an insertion rod 102, a clamping shaft 103, a fastening knob 104, a spring 105, a connecting seat 106 and a support block 107. The insertion rod 102 is clamped on the inner side of the top of the mounting tube 101, the clamping shaft 103 is fixedly arranged on the bottom outside of the insertion rod 102, the fastening knob 104 is arranged on the outside of the clamping shaft 103, the spring 105 is arranged on the inner side of the bottom of the mounting tube 101, the connecting seat 106 is fixedly arranged on the top of the insertion rod 102, and the support block 107 is movably connected to the inner side of the top of the connecting seat 106.

[0022] Specifically, one end of the clamping shaft 103 passes through and extends to the outside of one side of the mounting tube 101. A waist-shaped hole that cooperates with the clamping shaft 103 is provided on the outside of the mounting tube 101. The clamping shaft 103 is provided with a thread on the outside. The tightening knob 104 is provided with a threaded hole that cooperates with the thread on the outside of the clamping shaft 103 on the inside. The mounting tube 101 is provided with a plane that is convenient for locking the tightening knob 104. The bottom of the support block 107 is an arc-shaped structure. The inner side of the bottom of the connecting seat 106 is provided with an arc groove that cooperates with it. The inner side of the clamping seat 5 is provided with a clamping groove that cooperates with one end of the blade 9. The top of the support block 107 fits with the bottom of the blade 9.

[0023] In this embodiment, the blade 9 is first clamped. After one end of the blade 9 is inserted into the slot at the end of the socket 8, the clamping knob 3 is rotated to push the connecting shaft 4 forward, thereby moving the holder 5 at the end of the connecting shaft 4 forward until the inner slot of the holder 5 is clamped to the outside of one end of the blade 9 to realize the clamping work. In this way, the motor 6 rotates, driving the sleeve 7 to rotate, and the blade 9 clamped by the holder 5 and the socket 8 can be slowly rotated, thereby adjusting the angle and position, which is convenient for adjusting the polishing area.

[0024] Furthermore, after loosening the fastening knob 104, the height of the support block 107 can be effectively adjusted. As the blade 9 rotates, the bottom surface of the blade 9 applies pressure to the support block 107, so that the insertion rod 102 applies pressure to the spring 105 inside the mounting tube 101. The support block 107 is movably connected to the top of the connecting seat 106 to ensure that it can effectively fit with the bottom of the blade 9. After the position of the blade 9 is adjusted, the fastening knob 104 on the surface of the clamping shaft 103 is tightened to make the inner side of the fastening knob 104 effectively fit with the outer plane of the mounting tube 101, thereby achieving the effect of locking the height of the support block 107. In this way, during the polishing process, applying pressure to the surface of the blade 9 can effectively reduce the deformation of the blade 9, prevent the blade 9 from falling off, and ensure the polishing effect.

[0025] It should be noted that the parts not covered in the present invention are the same as the existing technology or can be implemented by using the existing technology; the various drives in the present invention can be implemented by using corresponding power structures such as cylinders, oil cylinders, electric cylinders, motors, etc. in combination with connecting rods, guide rods, etc., and are not limited to the description in the specification and the structure in the drawings.

[0026] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "set," and "provided with" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A clamping and supporting device for polishing a steam turbine blade, comprising a base (1), a support frame (2), a clamping knob (3), a connecting shaft (4), a holder (5), a motor (6), a sleeve (7), a socket (8), a blade (9) and a supporting mechanism (10), characterized in that: The support frame (2) is fixedly arranged at both ends of the upper surface of the base (1); the clamping knob (3) is threadedly connected to the top of the support frame (2) at one end; the motor (6) is installed on the outer side of the top of the support frame (2) at the other end; the connecting shaft (4) is movably connected to the end of the clamping knob (3); the holder (5) is fixedly arranged at the end of the connecting shaft (4); the sleeve (7) is sleeved and fixed to the output end of the motor (6); the socket (8) is fixedly arranged at the top of the sleeve (7); the blade (9) is clamped between the socket (8) and the holder (5); and the support mechanism (10) is arranged at the bottom of the blade (9); The support mechanism (10) comprises a mounting tube (101), an insertion rod (102), a clamping shaft (103), a fastening knob (104), a spring (105), a connecting seat (106) and a supporting block (107); the insertion rod (102) is clamped on the inner side of the top of the mounting tube (101); the clamping shaft (103) is fixedly arranged on the outer bottom of the insertion rod (102); the fastening knob (104) is arranged on the outer side of the clamping shaft (103); the spring (105) is arranged on the inner side of the bottom of the mounting tube (101); the connecting seat (106) is fixedly arranged on the top of the insertion rod (102); and the supporting block (107) is movably connected to the inner side of the top of the connecting seat (106).

2. The clamping and supporting device for polishing steam turbine blades according to claim 1, characterized in that: One end of the clamping shaft (103) passes through and extends to the outside of one side of the mounting tube (101), and a waist-shaped hole matching the clamping shaft (103) is provided on the outside of the mounting tube (101).

3. The clamping and supporting device for polishing steam turbine blades according to claim 1, characterized in that: The outside of the clamping shaft (103) is provided with a thread, the inside of the fastening knob (104) is provided with a threaded hole that matches the thread on the outside of the clamping shaft (103), and the outside of the mounting tube (101) is provided with a plane that facilitates locking of the fastening knob (104).

4. The clamping and supporting device for polishing steam turbine blades according to claim 1, characterized in that: The bottom of the support block (107) is an arc-shaped structure, and the inner side of the bottom of the connecting seat (106) is provided with an arc groove that matches the arc structure.

5. The clamping and supporting device for polishing steam turbine blades according to claim 1, characterized in that: A slot is provided on the inner side of the holder (5) to match one end of the blade (9), and the top of the support block (107) fits the bottom of the blade (9).

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