A rotary clamping mechanism of a steam turbine T-blade grinder

Abstract

The utility model relates to turbine blade clamp technical field, concretely is a kind of rotating clamping mechanism of turbine T type blade grinding machine, including T type blade, the clamping mechanism of clamping T type blade and the rotating height-adjusting mechanism installed on clamping mechanism;The rotating height-adjusting mechanism includes assembly backplate, the movable mounting of assembly backplate has runner, and the built-in rack is arranged in the vertical groove in runner interior. By installing rotating height-adjusting mechanism on existing grinding machine, the distance between clamping mechanism and abrasive belt and grinding wheel on grinding machine is controlled using rotating height-adjusting mechanism, and T type blade is fixed using clamping mechanism and keeps parallel state with the surface of grinding machine, after T type blade is driven by clamping mechanism and adheres to the outer surface of abrasive belt or grinding wheel, after T type blade is driven by rotating height-adjusting mechanism and rotates quickly, the radial width of blade inner curved surface can be formed periodic polishing after rotating height-adjusting mechanism rotation ends, ensure the continuity and high accuracy of blade inner curve each time polishing.

Description

Technical Field

[0001] This utility model relates to the field of turbine blade clamping technology, specifically a rotary clamping mechanism for a turbine T-blade grinding machine. Background Technology

[0002] The grinding of steam turbine T-blades is mainly to remove dirt from the blade surface, reduce frictional resistance, eliminate internal stress, and ensure the geometric accuracy of the blade, thereby improving the efficiency and safety of the steam turbine.

[0003] Currently, turbine T-blades are mainly produced by belt grinding and multi-robot collaborative grinding. Belt grinding requires the use of a grinding machine. However, the clamping module on the grinding machine has certain drawbacks when clamping the blades and cooperating with the belt grinding. Due to the significant difference between the inner and outer curvatures of the T-blade, the clamping module on the transmission grinding machine has difficulty matching the belt or grinding wheel with the direction of the inner curvature of the blade. Therefore, there is a large interference surface during the grinding process, which seriously affects the roundness and accuracy of the inner curvature of the blade.

[0004] In view of this, a rotary clamping mechanism for a steam turbine T-blade grinding machine was designed to solve the above problems. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by this utility model is as follows: A rotary clamping mechanism for a turbine T-blade grinding machine includes a T-blade, a clamping mechanism for clamping the T-blade, and a rotary height adjustment mechanism mounted on the clamping mechanism. The rotary height adjustment mechanism includes an assembly back plate, a rotating wheel movably mounted within the assembly back plate, a built-in rack in a vertical groove inside the rotating wheel, a load-bearing pad installed inside the rotating wheel, a horizontally placed hydraulic component fixedly mounted within the assembly back plate, a chuck mounted on the hydraulic component, a traction arm movably mounted at the other end of the chuck, a guide rod mounted within the rotating wheel, and the other end of the traction arm movably mounted on the guide rod. The clamping mechanism includes a first support rod mounted within the built-in rack, a positioning block fixedly mounted on the first support rod, a base movably mounted outside the positioning block, a second support rod mounted within the base, and clamps mounted at the top ends of both the first and second support rods. The T-blade is clamped within the two clamps.

[0007] In a preferred embodiment, the present invention can be further configured as follows: a reinforcing spring is fixedly installed in the vertical groove inside the rotating wheel, and the top of the reinforcing spring is fixedly installed on the built-in rack; a gear shaft is movably installed in the load-bearing pad; a housing is installed on the two studs on the back of the rotating wheel; a motor is fixedly installed in the housing; pulleys are installed on both the motor and the gear shaft; and a transmission belt is connected to the two pulleys.

[0008] In a preferred embodiment, the present invention can be further configured such that the column head in the middle of the wheel is mounted in a hole inside the mounting back plate via a bearing.

[0009] In a preferred embodiment, the present invention can be further configured as follows: a base is fixedly installed on the outside of the first support rod, a shell is fixedly installed inside the base, an electromagnet is provided inside the shell, a coil is provided on the electromagnet, a magnetic column is movably installed inside the shell, and a lever arm is movably installed at the bottom end of the magnetic column, and the other end of the lever arm is movably installed on the base.

[0010] In a preferred embodiment, the present invention can be further configured such that: the interior of the mounting back plate has two through holes, and two symmetrically distributed clamping plates are fixedly installed on the side of the mounting back plate facing the rotating wheel.

[0011] In a preferred embodiment, the present invention can be further configured such that: a rectangular groove is provided on the inner side of the clamp, and a coating is provided in the rectangular groove to increase frictional resistance.

[0012] In a preferred embodiment, the present invention can be further configured such that the wire ends on the coil are connected to the conductors on the top of the housing.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: 1. This utility model installs a rotary height adjustment mechanism on an existing grinding machine. The rotary height adjustment mechanism controls the distance between the clamping mechanism and the sanding belt and grinding wheel on the grinding machine. The clamping mechanism fixes the T-shaped blade and keeps it parallel to the surface of the grinding machine. As the clamping mechanism drives the T-shaped blade to fit against the outer surface of the sanding belt or grinding wheel, the rotary height adjustment mechanism drives the T-shaped blade to rotate rapidly. The diameter and width of the inner curved surface of the blade can then be adjusted to form a periodic grinding after the rotary height adjustment mechanism finishes rotating, ensuring the continuity and high precision of each grinding of the inner curved surface of the blade. Attached Figure Description

[0014] Figure 1 This is a schematic diagram illustrating the use of this utility model; Figure 2 This is a bottom view of the present invention; Figure 3 This is an exploded view of the rotary height adjustment mechanism of this utility model; Figure 4 This utility model Figure 3 Enlarged view of point A in the middle; Figure 5 This is an exploded view of the clamping mechanism of this utility model.

[0015] Figure label: 100. Rotary height adjustment mechanism; 110. Rotary wheel; 1101. Load-bearing pad; 1102. Built-in rack; 1103. Reinforcing spring; 120. Guide rod; 130. Assembly back plate; 140. Hydraulic component; 150. Clamp; 1501. Traction arm; 160. Chassis; 1601. Motor; 1602. Pulley; 1603. Drive belt; 1604. Gear shaft; 200 Clamping mechanism; 210 First support rod; 2101 Positioning block; 220 Second support rod; 2201 Base; 230 Clamp; 240 Base; 250 Housing; 2501 Electromagnet; 2502 Coil; 2503 Magnetic column; 260 Lever arm; 300, T-shaped blades. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0017] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0018] The following describes, with reference to the accompanying drawings, some embodiments of a turbine T-blade grinding machine with a rotary clamping mechanism.

[0019] Example 1: Combination Figures 1 to 5 As shown, the present invention provides a rotary clamping mechanism for a turbine T-blade grinding machine, including a T-blade 300, a clamping mechanism 200 for clamping the T-blade 300, and a rotary height adjustment mechanism 100 installed on the clamping mechanism 200. The rotary height adjustment mechanism 100 is used to provide a rotary platform for the clamping mechanism 200, and the clamping mechanism 200 is used to provide a clamping platform for the T-blade 300.

[0020] The rotating height adjustment mechanism 100 includes an assembly back plate 130, a rotating wheel 110 is movably installed inside the assembly back plate 130, an internal rack 1102 is provided in the vertical groove inside the rotating wheel 110, a load-bearing pad 1101 is installed inside the rotating wheel 110, a horizontally placed hydraulic component 140 is fixedly installed inside the assembly back plate 130, a clamp 150 is installed on the hydraulic component 140, a traction arm 1501 is movably installed at the other end of the clamp 150, a guide rod 120 is installed inside the rotating wheel 110, and the other end of the traction arm 1501 is movably installed on the guide rod 120. The assembly back plate 130 has two through holes inside, and two symmetrically distributed clamps are fixedly installed on the side of the assembly back plate 130 facing the rotating wheel 110. The central column of the rotating wheel 110 is mounted in a hole inside the mounting back plate 130 via a bearing; The clamping mechanism 200 includes a first support rod 210 installed inside the built-in rack 1102, a positioning block 2101 fixedly installed on the first support rod 210, a base 2201 movably installed outside the positioning block 2101, a second support rod 220 installed inside the base 2201, and a clamp 230 installed at the top of both the first support rod 210 and the second support rod 220. The T-shaped blade 300 is clamped in two clamps 230. The inner side of the clamps 230 is provided with a rectangular groove, and a coating to increase friction resistance is provided in the rectangular groove.

[0021] In use, the rotary wheel 110 is fixed to the grinding machine with bolts. The motor 1601 is driven via a cloud-based system. As the transmission shaft inside the motor 1601 reverses, one pulley 1602 on the transmission shaft drives the transmission belt 1603. The transmission belt 1603 then drives another pulley 1602 and the gear shaft 1604. Ultimately, the gear shaft 1604 lifts the internal rack 1102 upwards. The first support rod 210, fixed inside the internal rack 1102, then lifts the fixed T-shaped blade 300 to its highest position. As the grinding wheel inside the machine... After the belt or grinding wheel rotates, the motor 1601 is controlled to rotate forward. As the built-in rack 1102 descends, the T-shaped blade 300 will move towards the sanding belt or grinding wheel until the inner wall of the T-shaped blade 300 is in contact with the sanding belt or grinding wheel. Then, the hydraulic component 140 is operated until the hydraulic rod extends and stretches the chuck 150 and the traction arm 1501. The guide rod 120 will control the rotating wheel 110 and the fixed T-shaped blade 300 to rotate regularly. After the rotation is completed, the inner bend of the T-shaped blade 300 will be continuously and with high precision.

[0022] Example 2: Combination Figure 3 and Figure 4As shown, based on Embodiment 1, a reinforcing spring 1103 is fixedly installed in the vertical groove inside the rotating wheel 110, and the top of the reinforcing spring 1103 is fixedly installed on the built-in rack 1102. A gear shaft 1604 is movably installed inside the load-bearing pad 1101. A housing 160 is installed on two studs on the back of the rotating wheel 110. A motor 1601 is fixedly installed inside the housing 160. Pulleys 1602 are installed on both the motor 1601 and the gear shaft 1604, and a transmission belt 1603 is connected to the two pulleys 1602.

[0023] Preferably, a nut is installed on the stud on the back of the rotor 110, and the housing 160 is inserted into two studs and locked in place by two nuts. The internal shaft of the gear shaft 1604 can be installed in the load-bearing pad 1101 through a bearing. When the built-in rack 1102 is pushed down and the reinforcing spring 1103 is compressed, the moment the horizontal T-shaped blade 300 is finished being ground by the sanding belt or grinding wheel, the stopped chassis 160 will lose its positioning support for the built-in rack 1102. The reinforcing spring 1103 will then quickly push the clamping mechanism 200 and the ground T-shaped blade 300 upwards. This process can prevent the T-shaped blade 300 from being over-ground and damaged.

[0024] Example 3: Combination Figure 5 As shown, in the above embodiment, a base 240 is fixedly installed on the outside of the first support rod 210, and a housing 250 is fixedly installed inside the base 240. An electromagnet 2501 is provided inside the housing 250, and a coil 2502 is provided on the electromagnet 2501. A magnetic column 2503 is movably installed inside the housing 250, and a lever arm 260 is movably installed at the bottom end of the magnetic column 2503. The other end of the lever arm 260 is movably installed on the base 2201, and the wire end on the coil 2502 is connected to the wire on the top of the housing 250.

[0025] Preferably, a U-shaped frame is provided on the side of the base 2201 facing the first support rod 210, and the U-shaped frame is adapted to be installed on the outside of the positioning block 2101. As the magnetic field of the electromagnet 2501 moves downward, the magnetic column 2503 is pushed by the downward magnetic field, which will cause the power arm 260 to extend downward quickly, and the base 2201 and the second support rod 220 will quickly separate from the first support rod 210. Conversely, when the magnetic field of the electromagnet 2501 moves upward and the magnetic column 2503 is attracted to rise, the second support rod 220 and the first support rod 210 will quickly close, thereby realizing the rapid loading and unloading of the T-shaped blade 300.

[0026] The working principle and usage process of this utility model are as follows: Before use, the assembly back plate 130 is fixedly installed on the grinding machine with bolts until the two clamps 230 after being erected are perpendicular to the surface of the grinding machine. Then, the wires on the outer shell 250 are energized. As the magnetic field at the bottom of the electromagnet 2501 changes and pushes the magnetic column 2503 downward, the applied force arm 260 will push the base 2201 and the second support rod 220 to extend outward until the two clamps 230 are opened to the maximum state. Next, the T-shaped blade 300 with its T-shaped end is delivered into the gap between the two clamps 230. With the help of a change in the magnetic field of the electromagnet 2501, the rising magnetic column 2503 and lever arm 260 pull the base 2201 and the second support rod 220 towards the first support rod 210. Finally, the two clamps 230 clamp and fix the T-shaped blade 300 parallel to the surface of the grinding machine. The starting motor 1601 drives a pulley 1602, which in turn drives the transmission belt 1603 until the teeth... The axle 1604 controls the built-in rack 1102 and the clamping mechanism 200 to descend and approach the grinding mechanism of the grinding machine. While the clamping mechanism 200 descends, the hydraulic component 140 is used until the hydraulic rod inside the hydraulic component 140 extends outward and pulls the chuck 150 and the traction arm 1501 to bend inward. Finally, the bottom end of the traction arm 1501 will drive the guide rod 120 and the rotating wheel 110 to rotate. Finally, the horizontally placed T-shaped blade 300 can be ground along the inner arc surface of the grinding mechanism.

[0027] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rotary clamping mechanism for a turbine T-blade grinding machine, comprising a T-blade (300), characterized in that, It also includes a clamping mechanism (200) for clamping the T-shaped blade (300) and a rotary height adjustment mechanism (100) mounted on the clamping mechanism (200). The rotating height adjustment mechanism (100) includes an assembly back plate (130), in which a rotating wheel (110) is movably installed. A built-in rack (1102) is provided in the vertical groove inside the rotating wheel (110). A load-bearing pad (1101) is installed inside the rotating wheel (110). A horizontally placed hydraulic component (140) is fixedly installed inside the assembly back plate (130). A clamp (150) is installed on the hydraulic component (140). A traction arm (1501) is movably installed at the other end of the clamp (150). A guide rod (120) is installed inside the rotating wheel (110), and the other end of the traction arm (1501) is movably installed on the guide rod (120). The clamping mechanism (200) includes two clamps (230); The T-shaped blade (300) is held in two clamps (230).

2. The rotary clamping mechanism of a steam turbine T-blade grinding machine according to claim 1, characterized in that, A reinforcing spring (1103) is fixedly installed in the vertical groove inside the rotating wheel (110), and the top of the reinforcing spring (1103) is fixedly installed on the built-in rack (1102). A gear shaft (1604) is movably installed in the load-bearing pad (1101). A housing (160) is installed on the two studs on the back of the rotating wheel (110). A motor (1601) is fixedly installed in the housing (160). Pulleys (1602) are installed on both the motor (1601) and the gear shaft (1604), and a transmission belt (1603) is connected to the two pulleys (1602).

3. The rotary clamping mechanism of a steam turbine T-blade grinding machine according to claim 1, characterized in that, The column head in the middle of the wheel (110) is mounted in a hole inside the mounting back plate (130) via a bearing.

4. The rotary clamping mechanism of a steam turbine T-blade grinding machine according to claim 1, characterized in that, The clamping mechanism (200) further includes a first support rod (210) installed inside the built-in rack (1102). A positioning block (2101) is fixedly installed on the first support rod (210). A base (2201) is movably installed outside the positioning block (2101). A second support rod (220) is installed inside the base (2201). Two clamps (230) are respectively installed at the top ends of the first support rod (210) and the second support rod (220). The base (240) is fixedly installed on the outside of the base (240), and the outer shell (250) is fixedly installed inside the base (240). An electromagnet (2501) is provided inside the outer shell (2501), and a coil (2502) is provided on the electromagnet (2501). A magnetic column (2503) is movably installed inside the outer shell (250), and a lever arm (260) is movably installed at the bottom end of the magnetic column (2503). The other end of the lever arm (260) is movably installed on the base (2201).

5. The rotary clamping mechanism of a steam turbine T-blade grinding machine according to claim 1, characterized in that, The assembly back plate (130) has two through holes inside, and two symmetrically distributed clamps are fixedly installed on the side of the assembly back plate (130) facing the rotating wheel (110).

6. The rotary clamping mechanism of a steam turbine T-blade grinding machine according to claim 1, characterized in that, The clamp (230) has a rectangular groove on its inner side, and a coating to increase friction resistance is provided in the rectangular groove.

7. The rotary clamping mechanism of a steam turbine T-blade grinding machine according to claim 4, characterized in that, The wire ends on the coil (2502) are connected to the conductors on the top of the housing (250).

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