Elastic proximity switch device for sugarcane harvester

Abstract

The utility model discloses an elastic proximity switch device for a sugarcane harvester, which comprises a rack, a control device, a driving device, a material box and a fan are arranged on the rack, the driving device is used for driving the material box and the fan to displace, and a first proximity switch and a second proximity switch are arranged on the rack. The first proximity switch is used for sensing the fan, and the second proximity switch is used for sensing the material box; buffer devices corresponding to the second proximity switch and the first proximity switch are arranged on the material box and the fan; and the control device is used for receiving signals of the first proximity switch and the second proximity switch so as to control the driving device.

Description

Technical Field

[0001] The utility model relates to an elastic proximity switch device for a sugarcane harvester. Background Art

[0002] A proximity switch is a control induction element often used in an electrical system. Its main function is to sense the distance between two objects, so as to send a signal to control the movement of the object.

[0003] For the existing sugarcane harvester with a hopper type, when discharging after the hopper is full, the blower needs to be lifted first to prevent collision between the blower and the hopper. After discharging the hopper, the blower can only be lowered when the hopper falls onto the vehicle frame to prevent collision between the blower and the hopper. To prevent collision between the blower and the hopper, there are two control methods. One is that the driver visually makes manual control during operation, but this method is prone to misoperation by the driver and is generally not used. The other method is to install two proximity switches on the vehicle frame to sense the positions between the hopper and the vehicle frame, and between the blower and the vehicle frame, so as to control the lifting and lowering movements of the hopper and the blower. This method will not cause misoperation, so it is widely used.

[0004] For the existing proximity switch, the general sensing distance is 2 - 3 mm, and the sensing distance is relatively small. Therefore, during the lifting and lowering process of the hopper and the blower, it is very easy for the hopper and the blower to collide with the proximity switch, damaging the proximity switch and causing the machine to malfunction. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide an elastic proximity switch device for a sugarcane harvester.

[0006] An elastic proximity switch device for a sugarcane harvester includes a vehicle frame. A control device, a driving device, a hopper, and a blower are provided on the vehicle frame. The driving device is used to drive the hopper and the blower to displace. A first proximity switch and a second proximity switch are provided on the vehicle frame. The first proximity switch is used to sense the blower, and the second proximity switch is used to sense the hopper. Buffer devices corresponding to the second proximity switch and the first proximity switch are provided on the hopper and the blower.

[0007] The control device is used to receive the signals of the first proximity switch and the second proximity switch to control the driving device.

[0008] Preferably, the buffer device includes a spring and a contact block. One end of the spring is fixedly connected to the hopper or the blower, and the other end of the spring is fixedly connected to the contact block.

[0009] Preferably, the driving device is an oil cylinder. The base of the oil cylinder is connected to the vehicle frame, and the floating joint of the oil cylinder is hinged to the hopper or the blower.

[0010] Beneficial effect: Compared with the prior art, the utility model adds a contact block with a soft spring on the proximity switch seat and the fan. The contact block is used for the proximity switch to sense the distance. Because it is connected to the material box and the fan with a spring, during the lifting process of the material box and the fan, if the proximity switch contacts the material box and the fan, the compression and buffering effect of the spring can protect the proximity switch from being damaged by the material box and the fan. At the same time, it can also sense the position of the material box and the fan to make the machine work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram showing that the material box and the fan are both in a lifted state;

[0012] Figure 2 This is a schematic diagram showing that the material box and the fan are both in the lifted state;

[0013] Figure 3 yes Figure 1 Schematic diagram of the proximity switch and buffer device at A in the middle;

[0014] In the figure, 1. fan, 2. material box, 3. oil cylinder, 4. spring, 5. contact block, 6. proximity switch. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0016] like Figures 1-3 As shown, fan 1, material box 2, oil cylinder 3, spring 4, contact block 5, proximity switch 6;

[0017] An elastic proximity switch device for a sugarcane harvester comprises a frame, the frame is provided with a control device, a driving device, a material box 2, and a fan 1, the driving device is used to drive the material box 2 and the fan 1 to move, the frame is provided with a first proximity switch 6 and a second proximity switch 6, the first proximity switch 6 is used to sense the fan 1, and the second proximity switch 6 is used to sense the material box 2; the material box 2 and the fan 1 are provided with a buffer device corresponding to the second proximity switch 6 and the first proximity switch 6;

[0018] The control device is used to receive signals from the first proximity switch 6 and the second proximity switch 6 to control the drive device.

[0019] In this embodiment, the buffer device includes a spring 4 and a contact block 5 , one end of the spring 4 is fixedly connected to the material box 2 or the fan 1 , and the other end of the spring 4 is fixedly connected to the contact block 5 .

[0020] In this embodiment, the driving device is an oil cylinder 3. The base of the oil cylinder 3 is connected to the frame, and the floating joint of the oil cylinder 3 is hinged to the material box 2 or the fan 1.

[0021] Instructions for use: When the oil cylinder extends, the fan is lifted to the highest position. When the first proximity switch senses that the fan has been lifted to the highest position and the controller receives the signal sent by the first proximity switch, at this time, the material box oil cylinder can be controlled to extend to lift the material box for discharging.

[0022] When the material box oil cylinder extends and the material box is lifted to the in-place state, the material in the material box can be discharged at this time.

[0023] After the material box has finished discharging, when the first proximity switch senses that the fan is still at the highest position and the controller receives the signal sent by the first proximity switch, at this time, the material box oil cylinder can be operated to retract to lower the material box to the lowest position. When the second proximity switch senses that the material box is at the lowest position and the controller receives the signal sent by the first proximity switch, at this time, the fan oil cylinder can be operated to retract to lower the fan.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An elastic proximity switch device for a sugarcane harvester, characterized in that, It includes a frame, on which there are a control device, a driving device, a material box, and a fan. The driving device is used to drive the displacement of the material box and the fan. There are a first proximity switch and a second proximity switch on the frame. The first proximity switch is used to sense the fan, and the second proximity switch is used to sense the material box. Buffer devices corresponding to the second proximity switch and the first proximity switch are provided on the material box and the fan. The control device is used to receive the signals of the first proximity switch and the second proximity switch to control the driving device.

2. The elastic proximity switch device for a sugarcane harvester according to claim 1, characterized in that, The buffer device includes a spring and a contact block. One end of the spring is fixedly connected to the material box or the fan, and the other end of the spring is fixedly connected to the contact block.

3. The elastic proximity switch device for a sugarcane harvester according to claim 1, characterized in that, The driving device is an oil cylinder. The base of the oil cylinder is connected to the frame, and the floating joint of the oil cylinder is hinged to the material box or the fan.

Images