Device for connecting encoder and crown block steel wire rope reel shaft

Abstract

The utility model provides a device for connecting an encoder with a steel wire rope drum shaft of a crown block, which comprises a crown block body, a rain cover is arranged on the crown block body, the drum shaft is arranged in the rain cover, and one end of the drum shaft is connected with a motor. The supporting rod is located at the end, away from the motor, of the winding drum shaft in the rain cover, an output shaft is arranged at the upper end of the supporting rod, the output shaft is sleeved with a chain wheel capable of driving the output shaft to rotate, the end, away from the motor, of the winding drum shaft is sleeved with a lower chain wheel, and the upper chain wheel and the lower chain wheel are in transmission connection through a chain. And the output device is connected with a pulse encoder. Under the condition that the size of the rain cover is not changed, the height of the steel wire rope hook of the crown block can be accurately mastered; the structure is simple, cost is low, and usage is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of overhead crane equipment and relates to a device for connecting an encoder to the wire rope drum shaft of an overhead crane. Background Art

[0002] In the field of industrial manufacturing, many devices need to be periodically inspected, maintained, and serviced. Especially for outdoor devices, waterproof requirements are also involved. To prevent the influence of rain, snow, water slag, and fog on electrical devices, a rain shield adapted to the size of the device is mostly installed on the device. However, the space inside the rain shield is limited. If the length of the rain shield is too long, interference may occur during the movement of the overhead crane, making it impossible to install the pulse encoder on the drum drive shaft or the motor shaft. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a device for connecting an encoder to the wire rope drum shaft of an overhead crane in view of the problems existing in the prior art.

[0004] For this reason, the utility model adopts the following technical solutions:

[0005] A device for connecting an encoder to the wire rope drum shaft of an overhead crane includes an overhead crane body. A rain shield is provided on the overhead crane body. A drum shaft is provided inside the rain shield. One end of the drum shaft is connected to a motor. A support rod is provided on the overhead crane body. The support rod is located at the end of the drum shaft away from the motor inside the rain shield. An output shaft is provided at the upper end of the support rod. A sprocket capable of driving the output shaft to rotate is sleeved on the output shaft. A lower sprocket is sleeved on the end of the drum shaft away from the motor. The upper sprocket and the lower sprocket are connected by chain drive. A pulse encoder is connected to the output.

[0006] Further, the support rod is vertically arranged.

[0007] Further, the transmission ratio of the upper sprocket and the lower sprocket is 1:1.

[0008] Further, the output shaft is horizontally arranged.

[0009] Further, a connecting rod is fixed to the upper part of the support rod, and the pulse encoder is fixed to the connecting rod.

[0010] The beneficial effect of the utility model lies in that: by using the space position above the rain shield of the overhead crane body, the pulse encoder is installed above the rain shield and driven by chain drive to drive the output shaft to rotate. The output shaft is detected by the pulse encoder, so as to accurately master the height of the wire rope hook of the overhead crane without changing the size of the rain shield; the structure is simple, the cost is low, and the use method is convenient. Brief Description of the Drawings

[0011] As Figure 1It is a structural schematic diagram of the utility model;

[0012] In the figure, 1- overhead crane body, 2- rain cover, 3- reel shaft, 4- motor, 5- support rod, 6- output shaft, 7- upper sprocket, 8- lower sprocket, 9- chain, 10- pulse encoder, 11- connecting rod. DETAILED DESCRIPTION

[0013] The utility model is described in detail below with reference to the accompanying drawings:

[0014] like Figure 1 As shown, a device for connecting an encoder to a wire rope drum shaft of an overhead crane comprises an overhead crane body 1, a rain cover 2 is provided on the overhead crane body, a drum shaft 3 is provided inside the rain cover 2, the drum shaft 3 is a conventional structure of an existing overhead crane, a wire rope is wound around the drum shaft 3, and the wire rope can be wound up or released by rotating the drum shaft 3, one end of the drum shaft 3 is connected to a motor 4, and the motor 4 is used to drive the drum shaft 3 to rotate, a vertically arranged support rod 5 is provided on the overhead crane body 1, the support rod 5 is located at one end of the drum shaft 3 in the rain cover 2 away from the motor 4, and a horizontally arranged output shaft 6 is provided on the upper end of the support rod 5 Since the upper space inside the rain cover 2 is large, it is convenient for other components to be arranged. An upper sprocket 7 is sleeved on the output shaft 6 and can drive the output shaft 6 to rotate. A lower sprocket 8 is sleeved on the end of the drum shaft 3 away from the motor 4. The drum shaft 3 can drive the lower sprocket 8 to rotate. The upper sprocket 7 and the lower sprocket 8 are connected by a chain 9, and the transmission ratio between the upper sprocket 7 and the lower sprocket 8 is 1:1, that is, the output shaft 6 rotates one circle when the drum shaft 3 rotates one circle. The output shaft 6 is connected to a pulse encoder 10. Specifically, a connecting rod 11 is fixed to the upper part of the support rod 6, and the pulse encoder 10 is fixed to the connecting rod 11.

[0015] The usage of the utility model is as follows:

[0016] When the drum shaft 3 on the trolley body 1 rotates, driving the wire rope to be reeled in or released, causing the hook at the bottom of the wire rope to rise or fall, the drum shaft 3 drives the lower sprocket 8 to rotate, and the lower sprocket 8 drives the upper sprocket 7 and the output shaft 6 to rotate through the chain 9. When the output shaft 6 rotates, the pulse encoder 10 can record the rotation, rotation and angle of the output shaft 6, and then obtain the specific height of the hook at the bottom of the wire rope.

[0017] The device utilizes the upper space position of the rain cover 2 of the crane body 1, installs the pulse encoder 7 on the upper part of the drum shaft 3, and transmits the power through the chain 9, so as to realize the accurate control of the hook height of the crane wire rope.

Claims

1. A device for connecting an encoder to a crane wire rope drum shaft (3), comprising a crane body (1), a rain cover (2) being provided on the crane body (1), a drum shaft (3) being provided inside the rain cover (2), and a motor (4) being connected to one end of the drum shaft (3), characterized in that: The overhead crane body (1) is provided with a support rod (5), the support rod (5) being located at one end of the drum shaft (3) in the rain cover (2) away from the motor (4), an output shaft (6) being provided at the upper end of the support rod (5), an upper sprocket (7) being sleeved on the output shaft (6) and being capable of driving the output shaft (6) to rotate, a lower sprocket (8) being sleeved on one end of the drum shaft (3) away from the motor (4), the upper sprocket (7) and the lower sprocket (8) being connected to each other via a chain (9), and the output shaft (6) being provided with a pulse encoder (10) being connected thereto.

2. A device for connecting an encoder to a wire rope drum shaft (3) of a crane according to claim 1, characterized in that: The support rod (5) is arranged vertically.

3. The device for connecting an encoder to a wire rope drum shaft (3) of a crane according to claim 1, characterized in that: The transmission ratio of the upper sprocket (7) and the lower sprocket (8) is 1:

1.

4. The device for connecting an encoder to a wire rope drum shaft (3) of a crane according to claim 1, characterized in that: The output shaft (6) is arranged horizontally.

5. The device for connecting an encoder to a wire rope drum shaft (3) of a crane according to claim 1, characterized in that: A connecting rod (11) is fixed to the upper portion of the support rod (5), and the pulse encoder (10) is fixed on the connecting rod (11).

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