Auxiliary lifting appliance for rotor structure of expansion machine

Abstract

The utility model discloses an expander rotor structure auxiliary lifting appliance which comprises a supporting frame, a lifting plate and a lifting hook, a mounting plate is fixedly mounted on the outer side of the upper end of the lifting hook, a pull rod penetrates through the surface of the mounting plate, a pull ring is connected to the surface of the upper end of the pull rod, the pull rod can slide on the inner side of the mounting plate, and an arc-shaped clamping block is connected to the lower end of the pull rod. Springs are arranged at the upper ends of the arc-shaped clamping blocks and mounted on the outer sides of the pull rods, and limiting plates are fixedly mounted on the surfaces of the upper ends of the pull rods and arranged at the upper ends of the mounting plates.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary hangers, in particular to an auxiliary hanger for an expander rotor structure. Background Art

[0002] There are two types of expanders. One is the screw expander rotor: the screw expander rotor is usually composed of bilateral asymmetric female rotor and male rotor. The composition curve of the two rotors is an arc and its envelope, and the gear ratio is usually 6:5. The other is the turbine expander rotor: the turbine expander rotor is usually composed of the expander impeller, sealing sleeve, nut and main shaft. These components together constitute the core power part of the expander. When the rotor is running at high speed, its stability is crucial. The structure of the expander rotor is designed to achieve efficient and stable energy conversion. Through reasonable gear ratio, gap control and structural optimization and other measures, leakage can be reduced, efficiency can be improved and service life can be extended.

[0003] When installing the rotor structure, it is necessary to use a hoist to lift the rotor to the volute for installation. However, the traditional rotor hoist is simply connected to the rotor structure by connecting structures such as a lifting rope and a hook. Due to the shaking of the lifting rope, the rotor structure is easily caused to shake, which can easily cause damage to the rotor. Therefore, an auxiliary hoist for the expander rotor structure is proposed to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary hanger for an expander rotor structure to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary lifting device for an expander rotor structure, comprising a support frame, a lifting plate and a hook, a mounting plate is fixedly installed on the outer side of the upper end of the hook, a pull rod is penetrated through the surface of the mounting plate, a pull ring is connected to the surface of the upper end of the pull rod, and the pull rod can slide on the inner side of the mounting plate;

[0006] The lower end of the pull rod is connected with an arc-shaped clamping block, the upper end of the arc-shaped clamping block is provided with a spring, the spring is installed on the outside of the pull rod, the surface of the upper end of the pull rod is fixedly installed with a limit plate, and the limit plate is arranged on the upper end of the mounting plate.

[0007] Furthermore, a baffle is installed at one end of the upper surface of the lifting plate, and the baffles are provided in two groups. One group of baffles is installed on the upper surface of the other end of the hook, and a first servo motor is provided on one side of the baffle of one group. The first servo motor is installed on the upper surface of the lifting plate, and the output end of the first servo motor passes through one group of baffles and is connected to a bidirectional screw, and one end of the bidirectional screw is installed on the surface of the other group of baffles.

[0008] Furthermore, a through groove is provided on the surface of the lifting plate, two groups of sliding rods are fixedly installed on the inner side of the through groove, an internal threaded slider is provided on the outer side of the sliding rod, the upper end of the internal threaded slider is provided on the outer side of the bidirectional screw, and the lower end of the internal threaded slider is provided on the outer side of the sliding rod and can slide on its surface.

[0009] Furthermore, the support frames are provided with two groups, and the inner sides of the two groups of support frames are provided with sliding grooves, the inner sides of the sliding grooves are provided with threaded rods, the lower ends of the threaded rods are installed at the bottom of the inner sides of the sliding grooves, the upper ends of the threaded rods are connected to the second servo motor, and the second servo motor is installed on the surface of the upper ends of the support frames.

[0010] Furthermore, one end of the lifting plate is sleeved on the outside of the support frame, and an internal thread slide plate is provided on the inner side of one end of the lifting plate, and the internal thread slide plate passes through the slide groove and is installed on the outside of the threaded rod.

[0011] Furthermore, rollers are installed at the bottom of the support frame, and the rollers are arranged in multiple groups. The upper end of the internal threaded slider is provided with a shell, and the shell is installed on the upper surface of the lifting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The pull ring is used to drive the pull rod to move upward. In the process of pulling the pull rod upward, the arc-shaped clamping block is driven to move upward and squeeze the spring. Then the hook is hooked on the rotating rods at both ends of the rotor. Then the pull ring is released. At this time, the rebound force of the spring drives the arc-shaped clamping block and the spring to reset downward, so that the arc-shaped clamping block can be stuck on the surface of the rotating rods at both ends of the rotor, which can avoid shaking during the lifting process and easily cause damage to the rotor.

[0014] 2. The bidirectional screw is driven to rotate by the first servo motor, and the rotation of the bidirectional screw drives the two sets of first servo motors installed outside thereof to move left and right, thereby adjusting the position of the hook and adapting to rotor structures of different length specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main view of the utility model;

[0016] Figure 2 This is a schematic diagram of the regulating device of the utility model;

[0017] Figure 3 This is a schematic diagram of the lifting device of the utility model;

[0018] Figure 4 This is an enlarged schematic diagram of point A of the utility model;

[0019] In the figure: 1-support frame, 2-lifting plate, 3-hook, 4-housing, 5-slide groove, 6-roller, 7-baffle, 8-bidirectional screw, 9-internal thread slider, 10-first servo motor, 11-slide rod, 12-through groove, 13-threaded rod, 14-second servo motor, 15-pull ring, 16-pull rod, 17-spring, 18-mounting plate, 19-limiting plate, 20-arc block, 21-internal thread slider. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Please refer to Figure 1 to Figure 4 As shown, the utility model is an auxiliary lifting device for an expander rotor structure, comprising a support frame 1, a lifting plate 2 and a hook 3, a mounting plate 18 is fixedly installed on the outer side of the upper end of the hook 3, a pull rod 16 is penetrated through the surface of the mounting plate 18, a pull ring 15 is connected to the surface of the upper end of the pull rod 16, the pull rod 16 can slide on the inner side of the mounting plate 18, an arc-shaped block 20 is connected to the lower end of the pull rod 16, a spring 17 is arranged on the upper end of the arc-shaped block 20, the spring 17 is installed on the outer side of the pull rod 16, a limit plate 19 is fixedly installed on the surface of the upper end of the pull rod 16, and the limit plate 19 is arranged on the upper end of the mounting plate 18.

[0022] When in use, the pull ring 15 is used to drive the pull rod 16 to move upward. In the process of pulling the pull rod 16 upward, the arc block 20 is driven to move upward and squeeze the spring 17, and then the hook 3 is hooked on the rotating rods at both ends of the rotor. Then the pull ring 15 is released, and the rebound force of the spring 17 drives the arc block 20 and the spring 17 to reset downward, so that the arc block 20 can be stuck on the surface of the rotating rods at both ends of the rotor, which can avoid shaking during the lifting process.

[0023] Please refer to Figure 2A baffle 7 is installed at one end of the upper surface of the lifting plate 2, and two groups of baffles 7 are provided. One group of baffles 7 is installed on the upper surface of the other end of the hook 3. A first servo motor 10 is provided on one side of one group of baffles 7. The first servo motor 10 is installed on the upper surface of the lifting plate 2. The output end of the first servo motor 10 passes through one group of baffles 7 and is connected with a bidirectional screw 8. One end of the bidirectional screw 8 is installed on the surface of another group of baffles 7. The rotation of the first servo motor 10 can drive the bidirectional screw 8 to rotate, thereby driving the internal threaded slider 9 installed on its surface to move. The two groups of baffles 7 are provided to support the installation of the bidirectional screw 8.

[0024] Please refer to Figure 2 A through groove 12 is provided on the surface of the lifting plate 2, and two groups of sliding rods 11 are fixedly installed on the inner side of the through groove 12. An internally threaded slider 9 is provided on the outer side of the sliding rod 11. The upper end of the internally threaded slider 9 is provided on the outer side of the bidirectional screw 8, and the lower end of the internally threaded slider 9 is provided on the outer side of the sliding rod 11 and can slide on its surface. By providing two groups of sliding rods 11, the internally threaded slider 9 can be more stable when moving.

[0025] Please refer to Figure 1 , 3 The support frame 1 is provided with two groups, and the inner sides of the two groups of support frames 1 are provided with slide grooves 5. The inner side of the slide groove 5 is provided with a threaded rod 13. The lower end of the threaded rod 13 is installed at the bottom of the inner side of the slide groove 5. The upper end of the threaded rod 13 is connected to a second servo motor 14. The second servo motor 14 is installed on the surface of the upper end of the support frame 1. The threaded rod 13 is driven to rotate by the second servo motor 14, so as to drive the lifting plate 2 to move up and down in the slide groove 5.

[0026] Please refer to Figure 1 , 2 One end of the lifting plate 2 is sleeved on the outside of the support frame 1, and an internal thread slide plate 21 is provided on the inner side of one end of the lifting plate 2. The internal thread slide plate 21 passes through the slide groove 5 and is installed on the outside of the threaded rod 13. The rotation of the threaded rod 13 can drive the threaded slide plate 21 to move up and down, and at the same time can drive the lifting plate 2 to move, so as to facilitate the adjustment of the height of the hook 3.

[0027] Please refer to Figure 1 A roller 6 is installed at the bottom of the support frame 1, and multiple groups of rollers 6 are provided. A shell 4 is provided at the upper end of the internal threaded slider 9, and the shell 4 is installed on the upper surface of the lifting plate 2. The multiple groups of rollers 6 are provided to facilitate moving the device for lifting at different positions. The shell 4 is provided to protect the bidirectional screw 8 and the first servo motor 10.

[0028] Working principle: The utility model is an auxiliary lifting device for the rotor structure of an expander. First, the device is moved to the upper end of the expander volute, and then the threaded rod 13 is driven to rotate by the second servo motor 14. The rotation of the threaded rod 13 drives the lifting plate 2 to move downward, so that the hook 3 can follow and move downward to the upper end of the volute, and then the bidirectional screw 8 is driven to rotate by the first servo motor 10. The rotation of the bidirectional screw 8 drives the two groups of first servo motors 10 installed on the outside to move left and right, so that the position of the hook 3 can be adjusted to facilitate the lifting of the rotor structure, and then the pull ring 15 is pulled upward to drive the pull rod 16 to move upward. In the process of pulling the pull rod 16 upward, the arc block 20 is driven to move upward and squeeze the spring 17, and then the hook 3 is hooked on the rotating rods at both ends of the rotor, and then the pull ring 15 is released. At this time, the arc block 20 and the spring 17 are driven to reset downward by the rebound force of the spring 17, so that the arc block 20 can be stuck on the surface of the rotating rods at both ends of the rotor, which can avoid shaking during the lifting process.

[0029] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary lifting device for an expander rotor structure, comprising a support frame (1), a lifting plate (2) and a hook (3), characterized in that: A mounting plate (18) is fixedly mounted on the outer side of the upper end of the hook (3); a pull rod (16) is provided through the surface of the mounting plate (18); a pull ring (15) is connected to the surface of the upper end of the pull rod (16); and the pull rod (16) can slide on the inner side of the mounting plate (18); The lower end of the pull rod (16) is connected to an arc-shaped clamping block (20), and the upper end of the arc-shaped clamping block (20) is provided with a spring (17), and the spring (17) is installed on the outer side of the pull rod (16). A limit plate (19) is fixedly installed on the surface of the upper end of the pull rod (16), and the limit plate (19) is arranged on the upper end of the mounting plate (18).

2. The expander rotor structure auxiliary lifting device according to claim 1, characterized in that: A baffle (7) is installed at one end of the upper surface of the lifting plate (2), and the baffle (7) is provided in two groups. One group of baffles (7) is installed on the upper surface of the other end of the hook (3), and a first servo motor (10) is provided on one side of the baffle (7). The first servo motor (10) is installed on the upper surface of the lifting plate (2), and the output end of the first servo motor (10) passes through one group of baffles (7) and is connected to a bidirectional screw (8), and one end of the bidirectional screw (8) is installed on the surface of the other group of baffles (7).

3. The expander rotor structure auxiliary lifting device according to claim 2, characterized in that: A through groove (12) is provided on the surface of the lifting plate (2), two sets of sliding rods (11) are fixedly installed on the inner side of the through groove (12), an internal thread slider (9) is provided on the outer side of the sliding rod (11), the upper end of the internal thread slider (9) is provided on the outer side of the bidirectional screw rod (8), and the lower end of the internal thread slider (9) is provided on the outer side of the sliding rod (11) and can slide on the surface of the sliding rod (11).

4. The expander rotor structure auxiliary lifting device according to claim 1, characterized in that: The support frame (1) is provided with two groups, and a slide groove (5) is provided on the inner side of the two groups of support frames (1), and a threaded rod (13) is provided on the inner side of the slide groove (5), and the lower end of the threaded rod (13) is installed at the bottom of the inner side of the slide groove (5), and the upper end of the threaded rod (13) is connected to a second servo motor (14), and the second servo motor (14) is installed on the surface of the upper end of the support frame (1).

5. The expander rotor structure auxiliary lifting device according to claim 4, characterized in that: One end of the lifting plate (2) is sleeved on the outside of the support frame (1), and an internal thread slide plate (21) is provided on the inner side of one end of the lifting plate (2). The internal thread slide plate (21) passes through the slide groove (5) and is installed on the outside of the threaded rod (13).

6. The expander rotor structure auxiliary lifting device according to claim 3, characterized in that: A roller (6) is installed at the bottom of the support frame (1), and the roller (6) is provided in multiple groups. A shell (4) is provided at the upper end of the internal thread slider (9), and the shell (4) is installed on the upper surface of the lifting plate (2).

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