An encoder mounting structure for a crane drum

Abstract

This utility model relates to an encoder mounting structure for a crane drum, comprising: a drum; a first transmission gear connected to one end of the drum's rotating shaft; a second transmission gear meshing with the first transmission gear; a bearing mounting seat mounted on the crane drum, with the second transmission gear mounted on the bearing mounting seat; and an encoder, the input end of which is connected to the second transmission gear. The encoder detects the drum's rotation signal through the transmission of the first and second transmission gears. The encoder mounting structure for the crane drum of this utility model mainly consists of a drum, a first transmission gear, a second transmission gear, a bearing mounting seat, and an encoder. The encoder and the drum are connected by gear transmission between the first and second transmission gears, thereby detecting the motor's operating status. By changing the encoder's mounting method, replacing the coaxial connection with a gear connection, it addresses situations where the encoder cannot be directly connected to the motor shaft.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to an encoder mounting structure for a crane drum. Background Technology

[0002] During crane lifting operations, the lifted and lowered objects need to be lifted and lowered smoothly, reliably, and safely. In particular, the lifting and lowering speeds need to be uniform. The lifting and lowering speeds are controlled by the rotational speed of the drum, which in turn is controlled by a motor to regulate its speed and number of rotations. Therefore, during crane lifting operations, it is necessary to collect key crane data, such as lifting capacity, travel distance, lifting height, and lowering depth, to promptly detect and address machine malfunctions and improper control, preventing damage to the crane and potential engineering accidents.

[0003] Encoders are commonly used for monitoring motor speed and position. An encoder is a detection element used in speed control or position control systems. Photoelectric encoders, in particular, are sensors that convert the mechanical geometric displacement on the output shaft into pulses or digital signals through photoelectric conversion, and are typically used to measure motor speed. Encoders are usually coaxially connected and mounted at the rear end of the motor shaft, directly connected to it. However, in some special cases, the installation space for the motor on a crane is limited, making it impossible to install the encoder on the motor. Therefore, a new encoder installation method is urgently needed. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the electrode installation position on the crane is limited in the prior art, and there is not enough space to install the encoder.

[0005] To solve the above-mentioned technical problems, this utility model provides an encoder mounting structure for a crane drum, comprising: a drum; a first transmission gear connected to one end of the drum's rotating shaft; a second transmission gear meshing with the first transmission gear; a bearing mounting seat mounted on the crane drum, the second transmission gear being mounted on the bearing mounting seat; and an encoder, the input end of which is connected to the second transmission gear. The encoder is used to detect the rotation signal of the drum through the transmission of the second and first transmission gears. This crane drum encoder mounting structure of this utility model, where the encoder is connected to the drum via gear rotation to collect the motor's rotation signal, is suitable for situations where the motor shaft and encoder cannot be coaxially mounted, and is particularly suitable for applications with limited installation space.

[0006] In one embodiment of this utility model, the transmission gear is provided with a plurality of locking screws, and the transmission gear is locked to one end of the drum shaft by the plurality of locking screws.

[0007] In one embodiment of this utility model, a bearing is provided on the bearing mounting base, and the transmission gear two is connected to the inner ring of the bearing.

[0008] In one embodiment of this utility model, the bearing mounting seat is provided with a cover, the cover covers the transmission gear two, and the input end of the encoder passes through the cover and is connected to the transmission gear two.

[0009] In one embodiment of this utility model, the cover is provided with a plurality of locking screws, and the cover is locked to the bearing mounting seat by the plurality of locking screws.

[0010] In one embodiment of this utility model, a limit adapter is provided at one end of the drum housing where the encoder is installed, and the bearing mounting seat is installed on the limit adapter.

[0011] In one embodiment of this utility model, the limiting adapter is provided with a plurality of locking screws, and the limiting adapter is locked to the outer shell of the drum by the plurality of locking screws.

[0012] In one embodiment of this utility model, a lifting height limiter is connected to the limiting adapter plate, and the lifting height limiter is used to limit the lifting height of the crane hook.

[0013] In one embodiment of this utility model, the input end of the lifting height limiter is connected to the first transmission gear, and a cylindrical pin is provided between the input end of the lifting height limiter and the first transmission gear. The input end of the lifting height limiter is connected to the first transmission gear through the cylindrical pin.

[0014] In one embodiment of this utility model, the limiting adapter plate is provided with a through hole, and the input end of the lifting height limiter passes through the through hole and is connected to the transmission gear.

[0015] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0016] The encoder mounting structure for the crane drum described in this utility model mainly consists of a drum, a first transmission gear, a second transmission gear, a bearing mounting base, and an encoder. The encoder and the drum are connected by gear transmission through the first and second transmission gears, thereby detecting the operating status of the motor. By changing the installation method of the encoder, the coaxial connection is replaced with a gear connection to compensate for the situation where the encoder cannot be directly connected to the motor shaft. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the encoder mounting structure of the crane drum in a preferred embodiment of the present invention.

[0019] Explanation of the markings on the attached drawings: 1. Drum; 2. Drive gear one; 2. Locking screw one; 2. Drive gear two; 3. Bearing mounting seat; 4. Bearing; 4. Encoder; 5. Cover; 6. Locking screw two; 6. Limiting adapter; 7. Locking screw three; 7. Lifting height limiter; 72. Through hole; 73. Cylindrical pin; 8. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0021] Reference Figure 1 As shown, the encoder mounting structure for a crane drum of this utility model includes: a drum 1; a first transmission gear 2, which is connected to one end of the rotating shaft of the drum 1; a second transmission gear 3, which meshes with the first transmission gear 2; a bearing mounting seat 4, which is mounted on the crane drum, and the second transmission gear 3 is mounted on the bearing mounting seat 4; and an encoder 5, whose input end is connected to the second transmission gear 3. The encoder 5 is used to detect the rotation signal of the drum 1 through the transmission of the second transmission gear 3 and the first transmission gear 2.

[0022] In the above structure, the transmission gear 2 is provided with a plurality of locking screws 21, and the transmission gear 2 is locked to one end of the drum 1 shaft by the plurality of locking screws 21.

[0023] In the above structure, the bearing mounting base 4 is provided with a bearing 41, and the transmission gear 3 is connected to the inner ring of the bearing 41.

[0024] In the above structure, the bearing mounting base 4 is provided with a cover 6, which covers the transmission gear 3. The input end of the encoder 5 passes through the cover 6 and is connected to the transmission gear 3. The cover 6 is provided with several locking screws 61, and the cover 6 is locked to the bearing mounting base 4 by the several locking screws 61.

[0025] In the above structure, a limiting adapter plate 7 is provided at one end of the outer shell of the drum 1 where the encoder 5 is installed, and the bearing mounting seat 4 is installed on the limiting adapter plate 7. The limiting adapter plate 7 is provided with several locking screws 71, and the limiting adapter plate 7 is locked to the outer shell of the drum 1 by the several locking screws 71.

[0026] In the above structure, a lifting height limiter 72 is connected to the limiting adapter plate 7, which is used to limit the lifting height of the crane hook. The input end of the lifting height limiter 72 is connected to the transmission gear 2, and a cylindrical pin 8 is provided between the input end of the lifting height limiter 72 and the transmission gear 2. The input end of the lifting height limiter 72 is connected to the transmission gear 2 through the cylindrical pin 8. The limiting adapter plate 7 has a through hole 73, through which the input end of the lifting height limiter 72 passes and connects to the transmission gear 2.

[0027] The input end of the lifting height limiter 72 is connected to the transmission gear 2, which is connected to the drum. In this way, the lifting height limiter 72, the transmission gear 2 and the drum 1 rotate synchronously, which makes it convenient to detect the number of rotations and speed of the drum 1, so as to monitor the lifting height of the hook and play a safety protection role.

[0028] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An encoder mounting structure for a crane drum, characterized in that, include: reel; The first transmission gear is connected to one end of the rotating shaft of the drum; The second transmission gear meshes with the first transmission gear. A bearing mounting base is installed on the crane drum, and the second transmission gear is mounted on the bearing mounting base; The encoder has its input end connected to the second transmission gear. The encoder is used to detect the rotation signal of the drum through the transmission of the second transmission gear and the first transmission gear.

2. An encoder mounting structure for a crane drum as claimed in claim 1, characterised in that: The transmission gear is provided with several locking screws, and the transmission gear is locked to one end of the drum shaft by the several locking screws.

3. The encoder mounting structure for a crane drum as claimed in claim 1, characterized in that: The bearing mounting base is equipped with a bearing, and the transmission gear two is connected to the inner ring of the bearing.

4. An encoder mounting structure for a crane drum according to claim 1 or 3, characterized in that: The bearing mounting base is provided with a cover, which covers the second transmission gear, and the input end of the encoder passes through the cover and is connected to the second transmission gear.

5. An encoder mounting structure for a crane drum as claimed in claim 4, characterised in that: The cover is provided with several locking screws, and the cover is locked to the bearing mounting seat by several locking screws.

6. An encoder mounting structure for a hoist drum as defined in claim 1, wherein: The encoder is mounted on one end of the drum housing, and a limit adapter is provided on the limit adapter. The bearing mounting seat is mounted on the limit adapter.

7. An encoder mounting structure for a crane drum as claimed in claim 6, characterised in that: The limiting adapter plate is provided with several locking screws, and the limiting adapter plate is locked to the outer shell of the drum by several locking screws.

8. An encoder mounting structure for a crane drum as defined in claim 6, characterized in that: The limit adapter is connected to a lifting height limiter, which is used to limit the lifting height of the crane hook.

9. An encoder mounting structure for a crane drum as claimed in claim 8, characterised in that: The input end of the lifting height limiter is connected to the first transmission gear, and a cylindrical pin is provided between the input end of the lifting height limiter and the first transmission gear. The input end of the lifting height limiter is connected to the first transmission gear through the cylindrical pin.

10. The encoder mounting structure for a crane drum according to claim 9, characterized in that: The limiting adapter plate is provided with a through hole, and the input end of the lifting height limiter passes through the through hole and is connected to the transmission gear.

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