A crane travel positioning device

Abstract

This utility model relates to a crane positioning device, specifically a crane travel positioning device. A grating disk is fixedly sleeved on the motor output shaft. Multiple through holes are evenly distributed around the circumference of the grating disk. An electric switch transmitter and a photoelectric switch receiver are coaxially aligned and face each other. The photoelectric signal emitted by the switch transmitter passes through the through holes and illuminates the photoelectric switch receiver. In this utility model, the distance between the photoelectric switch transmitter and the photoelectric switch receiver is generally 30-50 mm, allowing for reliable use in strong electromagnetic fields, high dust levels, or outdoor rain and snow environments. Both the photoelectric switch transmitter and the photoelectric switch receiver are connected to the power supply equipment or PLC components via cables, and are not affected by strong electromagnetic fields, high dust levels, or outdoor rain and snow. This utility model is low in cost, simple to install, and stable and convenient to use, solving the problem of crane travel positioning data being affected by the environment at a relatively low cost.

Description

Technical Field

[0001] This utility model relates to a crane positioning device, specifically a crane travel positioning device. Background Technology

[0002] During the movement of overhead cranes in industrial sites, it is necessary to record the distance traveled and the specific location. The most widely used existing technologies are Gray bus positioning, laser positioning, or radar positioning. Although these methods can all achieve the positioning function, they all have certain limitations.

[0003] In strong electromagnetic fields, the Gray busbar is severely interfered with, resulting in significant deviations in positioning data.

[0004] In dusty or outdoor rainy / snowy environments, laser positioning data is inaccurate and cannot meet industrial needs. Utility Model Content

[0005] The purpose of this invention is to provide a crane positioning device that uses a photoelectric switch to achieve crane positioning. It is unaffected by strong electromagnetic fields, high dust levels, and outdoor rain and snow, and solves the problem of crane positioning data being affected by the environment at a lower cost.

[0006] The overhead crane includes an overhead crane traveling motor, which is fixedly connected to the overhead crane. The overhead crane traveling motor includes a motor output shaft. This utility model discloses an overhead crane traveling positioning device, which includes a grating disk, a bracket, a photoelectric switch transmitter, and a photoelectric switch receiver. The grating disk is fixedly sleeved on the motor output shaft and is coaxial with the motor output shaft. The grating disk has multiple through holes, which are evenly distributed around the axis of the grating disk. The bracket includes a base plate and two upright plates, which form a "U" shape. The two upright plates are parallel, and the grating disk is rotatably connected between the two upright plates. The base plate is fixedly connected to the overhead crane. The photoelectric switch transmitter and the photoelectric switch receiver are respectively fixedly connected to the two upright plates. The photoelectric switch transmitter and the photoelectric switch receiver are coaxial and facing each other. The photoelectric switch transmitter and the photoelectric switch receiver are respectively located on both sides of the grating disk. The photoelectric signal emitted by the photoelectric switch transmitter passes through the through holes and illuminates the photoelectric switch receiver.

[0007] Furthermore, the grating disk has a central hole at its center, which is fixedly connected to the motor output shaft.

[0008] Furthermore, the inner wall of the central hole is provided with a keyway, and the outer wall of the motor output shaft is provided with a keyway. The keyway on the inner wall of the central hole and the keyway on the outer wall of the motor output shaft are connected by a key, and the central hole and the motor output shaft are fixedly connected by the key and the keyway.

[0009] Furthermore, both upright plates are provided with connecting holes on their upper parts, and the two connecting holes are coaxial; the main body of the photoelectric switch transmitter passes through one connecting hole, and the two mounting nuts of the photoelectric switch transmitter are respectively abutted on the left and right sides of the connecting hole; the main body of the photoelectric switch receiver passes through the other connecting hole, and the two mounting nuts of the photoelectric switch receiver are respectively abutted on the left and right sides of the connecting hole.

[0010] Furthermore, 50 through holes are evenly distributed around the circumference of the grating disk.

[0011] The beneficial effects of this utility model are as follows: In this utility model, the distance between the photoelectric switch transmitter and the photoelectric switch receiver only needs to be sufficient to allow the rotation of the disc grating. Therefore, the distance between the photoelectric switch transmitter and the photoelectric switch receiver is generally 30 mm to 50 mm, which can be reliably used in strong electromagnetic fields, high dust, or outdoor rain and snow environments. Both the photoelectric switch transmitter and the photoelectric switch receiver are connected to the power supply equipment or PLC components through cables, and will not be affected by strong electromagnetic fields, high dust, or outdoor rain and snow. This utility model is low in cost, simple to install, stable and convenient to use, and solves the problem of the crane's travel positioning data being affected by the environment at a relatively low cost. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a partial cross-sectional view of the grating disk of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the grating disk of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the bracket of this utility model.

[0016] In the diagram: 1. Crane traveling motor; 101. Motor output shaft; 2. Grating disk; 201. Center hole; 202. Through hole; 3. Bracket; 301. Base plate; 302. Vertical plate; 303. Connecting hole; 4. Photoelectric switch transmitter; 5. Photoelectric switch receiver. Detailed Implementation

[0017] like Figures 1-4As shown, the overhead crane includes an overhead crane traveling motor 1, which is fixedly connected to the overhead crane. The overhead crane traveling motor 1 includes a motor output shaft 101. The overhead crane traveling positioning device of this utility model includes a grating disk 2, a bracket 3, a photoelectric switch transmitter 4, and a photoelectric switch receiver 5. The grating disk 2 is fixedly sleeved on the motor output shaft 101, and the grating disk 2 is coaxial with the motor output shaft 101. The grating disk 2 has multiple through holes 202, which are evenly distributed around the axis of the grating disk 2. The bracket 3 includes a base plate 301 and two uprights. The plate 302, two upright plates 302 and a base plate 301 form a "U" shape. The two upright plates 302 are parallel. The grating disk 2 is rotatably connected between the two upright plates 302. The base plate 301 is fixedly connected to the overhead crane. The photoelectric switch transmitter 4 and the photoelectric switch receiver 5 are fixedly connected to the two upright plates 302 respectively. The photoelectric switch transmitter 4 and the photoelectric switch receiver 5 are coaxial and facing each other. The photoelectric switch transmitter 4 and the photoelectric switch receiver 5 are respectively located on both sides of the grating disk 2. The photoelectric signal emitted by the photoelectric switch transmitter 4 passes through the through hole 202 and then shines on the photoelectric switch receiver 5.

[0018] The grating disk 2 has a central hole 201 at its center, which is fixedly connected to the motor output shaft 101. The inner wall of the central hole 201 has a keyway, and the outer wall of the motor output shaft 101 has a keyway. The keyway on the inner wall of the central hole 201 and the keyway on the outer wall of the motor output shaft 101 are connected by a key. The central hole 201 and the motor output shaft 101 are fixedly connected by the key and the keyway.

[0019] Both upright plates 302 have connection holes 303 on their upper parts, and the two connection holes 303 are coaxial; the main body of the photoelectric switch transmitter 4 passes through one connection hole 303, and the two mounting nuts of the photoelectric switch transmitter 4 are respectively abutted on the left and right sides of the connection hole 303; the main body of the photoelectric switch receiver 5 passes through the other connection hole 303, and the two mounting nuts of the photoelectric switch receiver 5 are respectively abutted on the left and right sides of the connection hole 303.

[0020] In this embodiment, 50 through holes 202 are evenly distributed around the circumference of the grating disk 2.

[0021] When installing bracket 3, pay attention to the positions of photoelectric switch transmitter 4 and photoelectric switch receiver 5. Ensure that the photoelectric signal emitted by photoelectric switch transmitter 4 passes through through hole 202 and illuminates photoelectric switch receiver 5. After adjusting the position, weld and fix bracket 3, or use other fixing methods.

[0022] When the motor output shaft 101 rotates, the disc grating 2 rotates synchronously, and the photoelectric switch transmitter 4 continuously emits photoelectric signals. Since the disc grating 2 has multiple through holes 202 evenly distributed around its circumference, the photoelectric signals emitted by the photoelectric switch transmitter 4 pass through the through holes 202 in a pulsed manner. Therefore, the signal received by the photoelectric switch receiver 5 is a pulse signal. This pulse signal is then connected to the PLC system. In the PLC system, a linear proportional conversion is performed based on the distance the equipment moves and the number of pulse signals to obtain the distance moved by each additional pulse signal. Thus, the distance the equipment moves can be calculated based on the number of pulse signals. Using the initial position as zero, the distance moved is the position data. When the motor reverses, the current position data is subtracted from the distance moved to obtain the position data. Since the use and conversion of PLC systems are common knowledge in this field, the specific use and conversion of PLC systems will not be described in detail again.

[0023] The photoelectric switch transmitter 4 and photoelectric switch receiver 5 of this invention form a through-beam photoelectric switch. Theoretically, the maximum distance between the photoelectric switch transmitter 4 and photoelectric switch receiver 5 can reach 50 mm. However, in this invention, the distance between the photoelectric switch transmitter 4 and photoelectric switch receiver 5 only needs to be sufficient to allow the rotation of the disc grating 2. Therefore, the distance between the photoelectric switch transmitter 4 and photoelectric switch receiver 5 in this invention is generally 30 mm to 50 mm. It can be reliably used in strong electromagnetic fields, high dust, or outdoor rain and snow environments. Both the photoelectric switch transmitter 4 and photoelectric switch receiver 5 are connected to the power supply equipment or PLC components through cables and will not be affected by strong electromagnetic fields, high dust, or outdoor rain and snow.

Claims

1. A crane traveling and positioning device, the crane including a crane traveling motor (1), the crane traveling motor (1) being fixedly connected to the crane, the crane traveling motor (1) including a motor output shaft (101), characterized in that: The system includes a grating disk (2), a bracket (3), a photoelectric switch transmitter (4), and a photoelectric switch receiver (5). The grating disk (2) is fixedly sleeved on the motor output shaft (101). The grating disk (2) is coaxial with the motor output shaft (101). The grating disk (2) has multiple through holes (202), which are evenly distributed around the axis of the grating disk (2). The bracket (3) includes a base plate (301) and two upright plates (302). The two upright plates (302) and the base plate (301) form a "U" shape. 302) Parallel, the grating disk (2) is rotatably connected between the two vertical plates (302), the base plate (301) is fixedly connected to the crane, the photoelectric switch transmitter (4) and the photoelectric switch receiver (5) are respectively fixedly connected to the two vertical plates (302), the photoelectric switch transmitter (4) and the photoelectric switch receiver (5) are coaxial and facing each other, the photoelectric switch transmitter (4) and the photoelectric switch receiver (5) are respectively located on both sides of the grating disk (2), the photoelectric signal emitted by the photoelectric switch transmitter (4) passes through the through hole (202) and then shines on the photoelectric switch receiver (5).

2. The overhead crane traveling and positioning device according to claim 1, characterized in that: The grating disk (2) has a central hole (201) at its center, and the central hole (201) is fixedly connected to the motor output shaft (101).

3. The overhead crane traveling and positioning device according to claim 2, characterized in that: The inner wall of the central hole (201) is provided with a keyway, and the outer wall of the motor output shaft (101) is provided with a keyway. The keyway on the inner wall of the central hole (201) and the keyway on the outer wall of the motor output shaft (101) are connected by a key. The central hole (201) and the motor output shaft (101) are fixedly connected by the key and the keyway.

4. The overhead crane traveling and positioning device according to claim 1, characterized in that: The two upright plates (302) are provided with connecting holes (303) on the upper part, and the two connecting holes (303) are coaxial; the main body of the photoelectric switch transmitter (4) passes through one connecting hole (303), and the two mounting nuts of the photoelectric switch transmitter (4) are respectively abutted on the left and right sides of the connecting hole (303); the main body of the photoelectric switch receiver (5) passes through the other connecting hole (303), and the two mounting nuts of the photoelectric switch receiver (5) are respectively abutted on the left and right sides of the connecting hole (303).

5. A crane traveling and positioning device according to any one of claims 1-4, characterized in that: The aforementioned through holes (202) are evenly distributed around the circumference of the grating disk (2) in 50 locations.

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