CN220033819U

CN220033819U - Laser alignment mechanism for rotor hoisting

Info

Publication number: CN220033819U
Application number: CN202321069320.3U
Authority: CN
Inventors: 孔祥初; 严天明; 王乐胜; 邬浩
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-11-17
Anticipated expiration: 2033-05-06

Abstract

The utility model discloses a laser alignment mechanism for hoisting a rotor, which comprises a plurality of plugboard mechanisms; one end of each plugboard mechanism is connected with a laser ranging sensor, the illumination direction of the laser ranging sensor is vertical downwards, and the laser ranging sensors are electrically connected with a control module in the plugboard mechanism; a plurality of laser ranging sensors are used for sensing annular light spot arrays and are matched with a target mechanism below. The system is used for solving the problems that in the existing hoisting and lowering process of the rotor of the hydroelectric generating set, whether the rotor collides with the inner wall of the stator or not needs to be manually judged, the efficiency is poor, the misjudgment probability is high and the operation risk is high, and the system has the characteristics of high judgment accuracy and small operation risk when the hoisting process is automatically monitored by the laser ranging to judge whether the hoisting process is offset or not.

Description

Laser alignment mechanism for rotor hoisting

Technical Field

The utility model belongs to the technical field of maintenance of hydraulic generators, and particularly relates to a laser alignment mechanism for hoisting a rotor.

Background

The gap between the stator and the rotor of the large-sized hydroelectric generating set is small, the risk of collision, extrusion and the like with the stator exists when the rotor is lifted in and lifted out, and personnel are often required to monitor and early warn between the stator and the rotor; in the prior art, a plugboard method is generally adopted for early warning and monitoring, a plurality of operators are required to respectively surround a circle around the periphery of a stator, then each operator holds a rope, the bottom end of the rope is tied with a plugboard, the operators need to continuously draw the rope in the rotor lowering process to pull the plugboard to slide up and down, and whether the plugboard is extruded by the rotor and the stator is sensed through the stress condition of hand feeling; for this reason, operators need to climb up and down the stator and climb over the bus bar, so that the safety risks of edge operation and under the suspended objects exist; the method of pulling the plugboard by hands not only has uneven speed, but also is easy to misjudge, and has various problems of untimely alarm feedback and untimely linkage with the crane after alarm; therefore, a laser alignment mechanism for rotor hoisting needs to be designed to solve the above problems.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a laser alignment mechanism for hoisting a rotor, which is used for solving the problems that in the hoisting and lowering process of the rotor of the existing hydroelectric generating set, whether the rotor collides with the inner wall of a stator needs to be manually judged, the efficiency is poor, the misjudgment probability is high and the operation risk is high.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the laser alignment mechanism for rotor hoisting comprises a plurality of plugboard mechanisms; one end of each plugboard mechanism is connected with a laser ranging sensor, the illumination direction of the laser ranging sensor is vertical downwards, and the laser ranging sensors are electrically connected with a control module in the plugboard mechanism; a plurality of laser ranging sensors are used for sensing annular light spot arrays and are matched with a target mechanism below.

Preferably, the target mechanism comprises a target ring of annular structure, the upper surface of the target ring being the horizontal plane of the annular structure.

Preferably, the laser ranging sensors form an annular array of light spots that are co-circular and fall on an annular horizontal plane.

Preferably, the side surfaces of the target ring are of slope-shaped conical surface structures, and the inclination of the side surfaces of the target ring is smaller than 30 degrees.

Preferably, the inner diameter of the target ring is larger than the diameter of the rotor, and the circle center of the target ring coincides with the circle center of the preset position when the rotor is hoisted.

Further, one end of the plugboard mechanism is connected with a support, the upper surface of the support is connected with a direct current motor, the output end of the direct current motor is connected with a winding roll, and the surface of the winding roll is wound with a rigid rope.

Further, the direct current motor is provided with a motor forward and backward rotation driving control module with the model of RYC-FB001, and the motor forward and backward rotation driving control module is electrically connected with the remote control module.

Preferably, a telescopic rod is connected to one side surface of the support, a U-shaped frame is connected to the end part of the telescopic rod, and a fixed pulley is rotatably connected to the inner wall of the U-shaped frame; the other end of the rigid rope bypasses the upper surface of the fixed pulley and is connected with the plugboard.

Further, the laser ranging sensor is preferably a Kellett TLS-01C laser ranging sensor, which can detect a vertical or inclined object within a distance of 30m without being affected by color, material or glossiness.

The beneficial effects of the utility model are as follows:

the system greatly reduces the number of operators required, and no more manual plugboards are needed for anti-collision monitoring; the offset of the rotor in the hoisting process can be reflected in time by the way that the laser ranging sensor is matched with the target below; the rotor hoisting process is safer, more stable and more reliable; the alignment monitoring system can also provide real-time data of the offset and the offset direction through data calculation, so that the lifting equipment can accurately correct the callback, the risk of collision caused by callback is avoided, and the time required for correcting errors is shortened.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic front view of the present utility model;

FIG. 3 is a schematic view of the present utility model in the implementation of lifting;

FIG. 4 is a schematic diagram of a target mechanism according to the present utility model;

in the figure: the device comprises a plugboard mechanism 1, a laser ranging sensor 31, a target ring 32, a support 141, a direct current motor 142, a telescopic rod 143, a U-shaped frame 144, a fixed pulley 145, a winding roll 146, a rigid rope 147 and a plugboard 2.

Detailed Description

Example 1:

as shown in fig. 1 to 4, a laser alignment mechanism for rotor hoisting comprises a plurality of plugboard mechanisms 1; one end of each plugboard mechanism 1 is connected with a laser ranging sensor 31, the illumination direction of the laser ranging sensor 31 is vertical downwards, and the laser ranging sensors 31 are electrically connected with a control module in the plugboard mechanism 1; a plurality of laser ranging sensors 31 form an annular array of light spots that cooperate with the underlying target mechanism.

Preferably, the target mechanism comprises a target ring 32 of annular structure, and the upper surface of the target ring 32 is the horizontal plane of the annular structure.

Preferably, the laser ranging sensors 31 form an annular array of spots that are co-circular and fall on an annular horizontal plane.

Preferably, the side surfaces of the target ring 32 are of a slope-shaped conical surface structure, and the inclination of the side surfaces of the target ring 32 is less than 30 degrees.

Preferably, the inner diameter of the target ring 32 is larger than the diameter of the rotor, and the circle center of the target ring 32 coincides with the circle center of the preset position when the rotor is hoisted.

Further, one end of the board inserting mechanism 1 is connected with a support 141, the upper surface of the support 141 is connected with a direct current motor 142, the output end of the direct current motor 142 is connected with a winding roll 146, and a rigid rope 147 winds the surface of the winding roll 146.

Further, the DC motor 142 is provided with a motor forward and reverse rotation driving control module with the model RYC-FB001, and the motor forward and reverse rotation driving control module is electrically connected with the remote control module 5.

Preferably, a telescopic rod 143 is connected to one side surface of the support 141, a U-shaped frame 144 is connected to the end part of the telescopic rod 143, and a fixed pulley 145 is rotatably connected to the inner wall of the U-shaped frame 144; the other end of the rigid rope 147 is connected with the plugboard 2 by winding around the upper surface of the fixed pulley 145.

Further, the laser ranging sensor 31 is preferably a Kellett TLS-01C laser ranging sensor 31, which can detect a vertical or inclined object within a distance of 30m without being affected by color, material or glossiness.

Example 2:

the working principle of the laser alignment mechanism for hoisting the rotor is as follows:

the length of the telescopic rod 143 at the end part of the plugboard mechanism 1 is adjusted, so that the light spot of each laser ranging sensor 31 falls on the horizontal plane of the annular structure on the upper surface of the target ring 3; in the lowering process, when the offset occurs, the light spot irradiated downwards by part of the laser ranging sensor 31 moves to the outside of the annular horizontal plane of the target ring 32 and falls on the conical surface outside the target ring 32; at this time, the controller of the board inserting mechanism 1 detects that the data difference between the different laser ranging sensors 31 exceeds a preset value, and then drives the corresponding alarm module to perform early warning.

The above embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments of the present utility model may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims

1. The laser alignment mechanism for rotor hoisting comprises a plurality of plugboard mechanisms (1); the method is characterized in that: one end of each plugboard mechanism (1) is connected with a laser ranging sensor (31), the illumination direction of the laser ranging sensor (31) is vertically downward, and the laser ranging sensor (31) is electrically connected with a control module in the plugboard mechanism (1); a plurality of laser ranging sensors (31) form an annular light spot array and are matched with a target mechanism below.

2. The laser alignment mechanism for rotor hoisting of claim 1 wherein: the target mechanism comprises a target ring (32) with an annular structure, and the upper surface of the target ring (32) is a horizontal plane with the annular structure.

3. The laser alignment mechanism for rotor hoisting of claim 1 wherein: the laser ranging sensors (31) form an annular light spot array with the same circle and fall on an annular horizontal plane.

4. The laser alignment mechanism for rotor hoisting of claim 2 wherein: the side surfaces of the target ring (32) are of slope-shaped conical surface structures, and the inclination of the side surfaces of the target ring (32) is smaller than 30 degrees.

5. The laser alignment mechanism for rotor hoisting of claim 2 wherein: the inner diameter of the target ring (32) is larger than the diameter of the rotor, and the circle center of the target ring (32) coincides with the circle center of the preset position when the rotor is hoisted.