Pin dismounting device for overhauling steam turbine of power plant

Abstract

The utility model discloses a power plant steam turbine overhaul pin dismounting device, and particularly relates to the technical field of pin dismounting, the power plant steam turbine overhaul pin dismounting device comprises a handle assembly, the top end of the handle assembly is fixedly provided with an edge prying assembly, the top end of the edge prying assembly is fixedly provided with a clamping assembly, and the edge prying assembly comprises a first mounting plate; according to the pin disassembling device for power plant steam turbine overhaul, the two prying knives can abut against the two sides of the inner end of the head of a pin, the pin can be prevented from being disengaged from the position between the two arc-shaped clamping jaws in the pin pulling process through the two prying knives, the pin can be conveniently pulled out, and the pin disassembling efficiency is improved. The two prying knives are controlled to be inserted between the head of the pin and the installation position from the two sides of the head of the pin, the pin can be pried up through the two prying knives, the pin becomes loose, and the situation that the pin and the installation position are connected too stubborn and cannot be disassembled conveniently and rapidly can be avoided. And the pin dismounting efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pin dismounting technical field, concretely is a kind of dismounting device for power plant steam turbine overhaul. BACKGROUND

[0002] Thermal power plant is simply called thermal power plant, and it is a factory that uses combustible materials (such as coal) as fuel to produce electric energy. Its basic production process is: when the fuel is burned, it heats the water to generate steam, converts the chemical energy of the fuel into heat energy, and the steam pressure drives the steam turbine to rotate, converts the heat energy into mechanical energy, and then the steam turbine drives the generator to rotate, converts the mechanical energy into electric energy. Thermal power plant is used with thermal power plant, and the thermal power plant needs to be overhauled during long-term use. The dismounting device is usually used during overhaul.

[0003] For example, the existing patent application No. 202222775563.0 dismounting device for thermal power plant steam turbine overhaul, including pin body and two parallel second support plates, two second support plates are provided with adjusting groove on one side, first support plate is symmetrically inserted into the inner cavity of two adjusting grooves, second air cylinder is symmetrically fixed and installed at the end of the inner cavity of two adjusting grooves, fixed flat plate is fixedly connected to the end of two first support plates away from second support plate, and abutting foot is fixedly connected to the end of second support plate away from fixed flat plate. The dismounting device for thermal power plant steam turbine overhaul can realize clamping and dismounting of pin body through the cooperation of first air cylinder, telescopic rod, driving rod, guide column, connecting rod, arc clamping claw, screw hole, bidirectional screw, motor, limiting slide block and limiting sliding groove. It can automatically clamp and dismount, can adapt to pin body of different diameters, has high stability and improves work efficiency.

[0004] However, the dismounting device for steam turbine overhaul still has some deficiencies in actual use, for example, the head end of the pin is clamped by two arc clamping claws to pull out and dismount the pin, but in the pulling-out process, the arc clamping claws do not clamp the head end of the pin and are separated from the head end of the pin, and the pin is too stubborn to be connected with the installation position, and the two arc clamping claws cannot pull out the pin. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a dismounting device for power plant steam turbine overhaul to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a dismounting device for power plant steam turbine overhaul, including handle assembly, the top end of handle assembly is fixedly installed with pry edge assembly, and the top end of pry edge assembly is fixedly installed with clamping assembly.

[0007] The pry edge assembly comprises a No. 1 mounting plate, a sliding groove is formed in the top surface of the No. 1 mounting plate, a No. 1 double-headed threaded rod is rotatably installed in the sliding groove, a No. 1 sliding block is threadedly connected to the two ends of the No. 1 double-headed threaded rod, a No. 1 servo motor is fixedly installed on one side surface of the No. 1 mounting plate, the output shaft of the No. 1 servo motor is fixedly connected to one end of the No. 1 double-headed threaded rod, a linear motor is fixedly installed on the top surface of each of the two No. 1 sliding blocks, an L-shaped mounting plate is fixedly installed on one side surface of the slider of each of the two linear motors, and a pry bar is fixedly installed on the top of the inner vertical surface of each of the two L-shaped mounting plates.

[0008] Preferably, the handle assembly comprises a round rod, an impact groove is formed in the inner bottom of the round rod, an impact head is slidably installed in the impact groove, and a pull rod is movably inserted into the bottom surface of the round rod.

[0009] Preferably, the top end of the pull rod is fixedly connected to the center of the bottom surface of the impact head, and a pull handle is fixedly installed at the bottom end of the pull rod.

[0010] Preferably, the clamping assembly comprises a No. 2 mounting plate, a groove is formed in the top surface of the No. 2 mounting plate, a No. 2 double-headed threaded rod is rotatably installed in the groove, and a No. 2 threaded block is threadedly connected to the two ends of the No. 2 double-headed threaded rod.

[0011] Preferably, a No. 2 servo motor is fixedly installed on one side surface of the No. 2 mounting plate, the output shaft of the No. 1 servo motor is fixedly connected to one end of the No. 1 double-headed threaded rod, a vertical plate is fixedly installed on the top surface of each of the two No. 2 threaded blocks, and an arc-shaped clamping claw is fixedly installed on the top of the inner side surface of each of the two vertical plates.

[0012] Preferably, the No. 1 mounting plate is fixedly installed on the top surface of the round rod, the No. 2 mounting plate is fixedly embedded in the embedded groove, the No. 1 mounting plate and the No. 2 mounting plate are arranged in a cross shape, and the two ends of the No. 1 double-headed threaded rod and the No. 2 double-headed threaded rod are oppositely arranged in terms of screw rotation direction.

[0013] Compared with the prior art, the pry edge assembly has the following beneficial effects:

[0014] The pin removing device for power plant turbine maintenance is characterized in that two pry bars are arranged on the inner ends of the two sides of the head of the pin, the two pry bars can avoid the pin from being separated from the two arc-shaped clamping claws during the process of pulling out the pin, effectively improve the success rate of removing the pin, control the two pry bars to be inserted from the two sides of the head of the pin to the position between the head of the pin and the installation position, pry the pin with the two pry bars, make the pin loose, avoid the pin from being too stubbornly connected with the installation position and being inconveniently removed, and effectively improve the efficiency of removing the pin. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1The utility model discloses a whole three -dimensional structure schematic diagram shows;

[0016] Figure 2 The utility model discloses a handle assembly three -dimensional structure schematic diagram shows;

[0017] Figure 3 The utility model discloses a pry edge assembly three -dimensional structure schematic diagram shows;

[0018] Figure 4 The utility model discloses a clamping assembly three -dimensional structure schematic diagram shows.

[0019] In the drawing: 1, handle assembly;101, round rod;102, impact groove;103, impact head;104, pull rod;105, pull handle;2, pry edge assembly;201, no. One mounting plate;202, embedded groove;203, no. One double -end threaded rod;204, no. One sliding block;205, no. One servo motor;206, linear motor;207, L-shaped mounting plate;208, pry bar;3, clamping assembly;301, no. Two mounting plates;302, no. Two double -end threaded rods;303, no. Two threaded blocks;304, no. Two servo motors;305, vertical plate;306, arc clamping claw. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the range of protection of the utility model.

[0021] As Figures 1-4 The utility model provides a technical scheme: including handle assembly 1, the top of handle assembly 1 is fixedly installed with pry edge assembly 2, the top of pry edge assembly 2 is fixedly installed with clamping assembly 3;

[0022] Pry edge assembly 2 includes one mounting plate 201, the top surface of one mounting plate 201 is provided with a sliding slot, one double -end threaded rod 203 is rotatably installed in the sliding slot, the rod body both ends of one double -end threaded rod 203 are all threadedly connected with one sliding block 204, one side of one mounting plate 201 is fixedly installed with one servo motor 205, the output shaft one end of one servo motor 205 is fixedly connected with one end of one double -end threaded rod 203, the top surface of two one sliding blocks 204 is all fixedly installed with linear motor 206, the slider one side of two linear motors 206 is fixedly installed with L-shaped mounting plate 207, the vertical portion inner side top of two L-shaped mounting plates 207 is all fixedly installed with pry bar 208.

[0023] In the embodiment, the handle assembly 1 comprises a round rod 101, an impact groove 102 is formed in the inner bottom of the round rod 101, an impact head 103 is slidably installed in the impact groove 102, a pull rod 104 is movably inserted into the bottom surface of the round rod 101, the top end of the pull rod 104 is fixedly connected with the bottom surface center of the impact head 103, and a pull handle 105 is fixedly installed at the bottom end of the pull rod 104.

[0024] The clamping assembly 3 comprises a No. 301 installation plate, a No. 302 double-headed threaded rod is rotatably installed in the top surface of the No. 301 installation plate, No. 303 threaded blocks are threadedly sleeved at both ends of the No. 302 double-headed threaded rod, a No. 304 servo motor is fixedly installed on one side of the No. 301 installation plate, the output shaft of the No. 205 servo motor is fixedly connected with one end of the No. 203 double-headed threaded rod, vertical plates 305 are fixedly installed on the top surfaces of the two No. 303 threaded blocks, arc-shaped clamping claws 306 are fixedly installed on the inner side top surfaces of the two vertical plates 305, the No. 201 installation plate is fixedly installed on the top surface of the round rod 101, the No. 301 installation plate is fixedly embedded in the embedded groove 202, the No. 201 installation plate and the No. 301 installation plate are cross-shaped, the screw rotation directions of the two ends of the No. 203 double-headed threaded rod and the No. 302 double-headed threaded rod are opposite, the No. 304 servo motor is started, the No. 302 double-headed threaded rod is rotated under the action of the No. 304 servo motor, the two vertical plates 305 are brought to approach each other, and the two arc-shaped clamping plates 306 are brought to approach each other and clamp the both sides of the pin head.

[0025] In use, first, the two pry knives 208 are located on both sides of the pin head, then the first servo motor 205, under the action of the first servo motor 205, the first double-headed threaded rod 203 rotates, the rotation of the first double-headed threaded rod 203 can drive the two first sliding blocks 204 to approach each other, the two first sliding blocks 204 approaching each other can drive the two pry knives 208 to approach each other, and the two pry knives 208 are controlled to be inserted between the pin head and the installation position from both sides of the pin head, the two pry knives 208 can pry the pin and make it loose, then the second servo motor 304 is started, under the action of the second servo motor 304, the rotation of the second double-headed threaded rod 302 can drive the two vertical plates 305 to approach each other, the two vertical plates 305 approaching each other can drive the two arc-shaped clamping plates 306 to approach each other and clamp the two sides of the pin head, then the pull handle 105 is manually pulled backward, the pull handle 105 can drive the impact head 103 to move quickly to the rear end, and finally the impact head 103 hits the inner surface of the impact groove 102 to apply a backward pulling force to the round rod 101, so that the pin can be pulled out from the installation position, at this time, the two pry knives 208 are located on both sides of the inner end of the pin head, and the two pry knives 208 can avoid the pin from being separated from the two arc-shaped clamping jaws 306 during the process of pulling out the pin, effectively improving the efficiency and success rate of disassembling the pin.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pin removing device for use in overhauling steam turbines of power plants, comprising a handle assembly (1), characterized in that The top end of the handle assembly (1) is fixedly installed with a pry edge assembly (2), and the top end of the pry edge assembly (2) is fixedly installed with a clamping assembly (3); The pry edge assembly (2) comprises a No. 1 mounting plate (201), the top surface of the No. 1 mounting plate (201) is provided with a sliding groove, a No. 1 double-headed threaded rod (203) is rotatably installed in the sliding groove, the rod body of the No. 1 double-headed threaded rod (203) is threadedly sleeved with a No. 1 sliding block (204) at both ends, a No. 1 servo motor (205) is fixedly installed on one side surface of the No. 1 mounting plate (201), the output shaft of the No. 1 servo motor (205) is fixedly connected with one end of the No. 1 double-headed threaded rod (203), the top surface of each of the two No. 1 sliding blocks (204) is fixedly installed with a linear motor (206), an L-shaped mounting plate (207) is fixedly installed on one side surface of the sliding block of each of the two linear motors (206), and a pry knife (208) is fixedly installed on the top of the inner side surface of the vertical part of each of the two L-shaped mounting plates (207).

2. A pin removing device for use in overhauling a steam turbine of a power plant according to claim 1, characterized in that The handle assembly (1) comprises a round rod (101), the inner bottom of the round rod (101) is provided with an impact groove (102), and an impact head (103) is slidably installed in the impact groove (102).

3. A pin removing device for use in overhauling a steam turbine of a power plant according to claim 2, characterized in that The top end of the pull rod (104) is fixedly connected with the bottom surface center of the impact head (103), and the bottom end of the pull rod (104) is fixedly installed with a pull handle (105).

4. The pin removing device for the repair of a steam turbine of a power plant according to claim 2, characterized in that The clamping assembly (3) comprises a No. 2 mounting plate (301), the top surface of the No. 2 mounting plate (301) is provided with a recess, and a No. 2 double-headed threaded rod (302) is rotatably installed in the recess, the rod body of the No. 2 double-headed threaded rod (302) is threadedly sleeved with a No. 2 threaded block (303) at both ends.

5. A pin removing device for use in overhauling a steam turbine of a power plant according to claim 4, characterized in that One side surface of the No. 2 mounting plate (301) is fixedly installed with a No. 2 servo motor (304), the output shaft of the No. 1 servo motor (205) is fixedly connected with one end of the No. 1 double-headed threaded rod (203), the top surface of each of the two No. 2 threaded blocks (303) is fixedly installed with a vertical plate (305), and the top of the inner side surface of each of the two vertical plates (305) is fixedly installed with an arc-shaped clamping claw (306).

6. A pin removing device for use in overhauling a steam turbine of a power plant according to claim 4, characterized in that The No. 1 mounting plate (201) is fixedly installed on the top surface of the round rod (101), the No. 2 mounting plate (301) is fixedly embedded in the embedded groove (202), the No. 1 mounting plate (201) and the No. 2 mounting plate (301) are cross-shaped, and the thread rotation directions of the two ends of the No. 1 double-headed threaded rod (203) and the No. 2 double-headed threaded rod (302) are opposite.

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