High and low speed conversion device

Abstract

The utility model discloses a high-low speed conversion device, and particularly relates to the technical field of planting equipment, the high-low speed conversion device comprises an outer frame, an inner frame, a high-speed driving mechanism and a low-speed driving mechanism, a linear telescopic assembly of the high-speed driving mechanism is respectively connected with the outer frame and the inner frame, and can drive the inner frame to move at a high speed relative to the outer frame; the low-speed driving mechanism comprises a transmission assembly, the transmission assembly comprises a first transmission end, a second transmission end and a clutch unit for controlling connection or disconnection of the first transmission end and the second transmission end, and when the low-speed driving mechanism works, the linear telescopic assembly is in an unpowered state, the first transmission end is connected with the second transmission end, and the inner frame moves at a low speed relative to the outer frame; when the high-speed driving mechanism works, the first transmission end and the second transmission end are disconnected, the linear telescopic assembly is in a powered state, and the inner frame moves at a high speed relative to the outer frame. The device is simple in structure, low in manufacturing cost and capable of improving high-low speed switching efficiency and reducing operation difficulty and risks.

Description

TECHNICAL FIELD

[0001] The utility model relates to a planting equipment technical field, in particular to a high low speed conversion device. BACKGROUND

[0002] The desert planting equipment needs to frequently cope with different operation scenes when working, such as switching from fast driving on flat sandy land to low-speed precision operation in planting area, and in the transmission system of the traditional planting equipment, high-low speed switching often needs to go through a complex mechanical power gear shifting process, which not only leads to slow switching speed, power interruption and other problems in the switching process, but also limits the power performance and working efficiency of the equipment, and in the special environment of the desert, it can also cause inconvenience in high-low speed conversion of the equipment, increase operation difficulty and risk. SUMMARY

[0003] The utility model discloses a high low speed conversion device to solve the above-mentioned prior art problems, simple structure, low manufacturing cost, can improve high-low speed switching efficiency, reduce operation difficulty and risk.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] The utility model provides a high low speed conversion device, including outer frame, inner frame, high speed drive mechanism and low speed drive mechanism, the inner frame is installed in the outer frame, the high speed drive mechanism includes linear telescopic subassembly, one end of linear telescopic subassembly is connected with the outer frame, and the other end is connected with the inner frame, the low speed drive mechanism includes power component and transmission component, the transmission component includes first transmission end, second transmission end and clutch unit, the first transmission end is connected with the power component, the clutch unit is installed on the inner frame, the clutch unit is used to disconnect or intercommunication transmission connection between the first transmission end and the second transmission end, when the low speed drive mechanism works, the linear telescopic subassembly is in the state of no power, the clutch unit makes the first transmission end intercommunication transmission connection with the second transmission end, so that the inner frame moves at low speed relative to the outer frame, and the linear telescopic subassembly moves along with the inner frame, when high speed drive mechanism works, the clutch unit makes the first transmission end disconnect transmission connection with the second transmission end, and the linear telescopic subassembly is in the state of power, so that the inner frame moves at high speed relative to the outer frame.

[0006] Preferably, the linear telescopic subassembly is a pneumatic cylinder or a hydraulic cylinder.

[0007] Preferably, the first transmission end comprises two gears and a transmission shaft, the two gears are fixedly connected with two ends of the transmission shaft, the transmission shaft is installed on a shaft mounting seat hinged with the inner frame, the power assembly is connected with the transmission shaft and can drive the transmission shaft to rotate around itself, the second transmission end comprises two racks, the two racks are fixedly installed on two sides of the outer frame respectively, the clutch unit is connected with the shaft mounting seat and can drive the shaft mounting seat to move close to or away from the inner frame, thereby separating or engaging the gears with the racks.

[0008] Preferably, the power assembly comprises a motor and a speed reducer, the motor is connected with the speed reducer, and the speed reducer is in transmission connection with the transmission shaft.

[0009] Preferably, the clutch unit is a telescopic air cylinder, a fixed end of the telescopic air cylinder is fixedly connected with the inner frame, and a free end of the telescopic air cylinder is connected with the shaft mounting seat.

[0010] Preferably, the outer frame has a sliding track, the inner frame is arranged in the outer frame and is in sliding connection with the sliding track through a sliding block.

[0011] The racks are parallel to the sliding tracks.

[0012] The utility model discloses relative to prior art has obtained following technical effect:

[0013] The utility model provides a high low speed conversion device, including the high speed drive mechanism and low speed drive mechanism for switching the running speed of inner frame relative to outer frame under different working conditions, the linear telescopic subassembly of high speed drive mechanism is connected with outer frame and inner frame respectively, and low speed drive mechanism includes transmission assembly, and the clutch unit of transmission assembly can control first transmission end and second transmission end connection or disconnect, when needing low speed, linear telescopic subassembly is the unpowered state, and the clutch unit makes first transmission end and second transmission end intercommunication transmission connection, and transmission assembly drives inner frame to make low speed motion relative to outer frame, when needing high speed, the clutch unit makes first transmission end and second transmission end disconnect transmission connection, and linear telescopic subassembly is the powered state, and can drive inner frame high speed removal relative to outer frame, and high low speed conversion device's structure is simple, and the manufacturing cost is low, and operating personnel can switch high low speed according to different operation demand and topographic condition, improve operation efficiency and the adaptability of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical schemes in the embodiments of the present application or in the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a structural schematic diagram of the high-low speed conversion device.

[0016] Figure 2 It is a schematic diagram of the high-low speed conversion device in the initial state of high-speed driving.

[0017] Figure 3 It is a schematic diagram of the high-low speed conversion device in the motion of high-speed driving.

[0018] Figure 4 It is a schematic diagram of the initial state of the low-speed driving mechanism when driving at low speed.

[0019] Figure 5 It is a schematic diagram of the low-speed driving mechanism when driving at low speed.

[0020] Figure 6 It is a schematic diagram of the low-speed driving mechanism in the motion when driving at low speed.

[0021] In the figure: 1-linear telescopic assembly; 2-inner frame; 3-gear; 4-power unit; 5-transmission shaft; 6-clutch unit; 7-sliding block; 8-sliding rail; 9-outer frame; 10-rack; 11-axle mounting seat. DETAILED DESCRIPTION

[0022] The technical schemes in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] The purpose of the present application is to provide a high-low speed conversion device to solve the problems in the prior art, which has simple structure, low manufacturing cost, can improve the high-low speed switching efficiency, and reduce the operation difficulty and risk.

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in combination with the drawings and specific embodiments.

[0025] The present application provides a high-low speed conversion device, which comprises a linear telescopic assemblyFigures 1-6 As shown, it comprises an outer frame 9, an inner frame 2, a high-speed driving mechanism and a low-speed driving mechanism, the inner frame 2 is slidingly installed in the outer frame 9, the high-speed driving mechanism comprises a linear telescopic assembly 1, one end of the linear telescopic assembly 1 is connected with the outer frame 9, and the other end is connected with the inner frame 2; the low-speed driving mechanism comprises a power assembly and a transmission assembly, the transmission assembly comprises a first transmission end, a second transmission end and a clutch unit 6, the first transmission end is connected with the power assembly, the clutch unit is installed on the inner frame 2, and the clutch unit is used for disconnecting or connecting the transmission connection between the first transmission end and the second transmission end, when the low-speed driving mechanism works, the linear telescopic assembly 1 is in a non-powered state, the clutch unit makes the first transmission end and the second transmission end in transmission connection, so that the inner frame 2 moves at a low speed relative to the outer frame 9, and the linear telescopic assembly 1 moves with the inner frame 2; when the high-speed driving mechanism works, the clutch unit makes the first transmission end and the second transmission end disconnected in transmission connection, the linear telescopic assembly 1 is in a powered state, so that the inner frame 2 moves at a high speed relative to the outer frame 9. When low-speed driving is required, the linear telescopic assembly 1 is in a non-powered state, the power assembly is connected with the transmission assembly, so that the inner frame 2 moves at a low speed relative to the outer frame 9, when low-speed driving is required, the power assembly is disconnected with the transmission assembly, the linear telescopic assembly 1 is in a powered state, and drives the inner frame 2 to move at a high speed relative to the outer frame 9, so that the structure is simple, the manufacturing cost is low, and the operator can quickly switch high speed and low speed according to different operation requirements and terrain conditions, and the operation efficiency and the adaptability of the equipment are improved.

[0026] It is further preferred in the embodiment of the utility model that the linear telescopic assembly 1 is a pneumatic cylinder or a hydraulic cylinder, the pneumatic cylinder or the hydraulic cylinder has a fast action speed, and the time from static to maximum output force is short, so that the start and stop of relative movement can be quickly realized, thereby realizing high-speed movement. When the linear telescopic assembly 1 is a pneumatic cylinder, the non-powered state of the pneumatic cylinder is that the air inlet and the air outlet of the pneumatic cylinder are in an open state (for example, the valve is closed or the pipeline is disconnected), and the internal gas can freely enter and exit, at this time, the first transmission end and the second transmission end are in transmission connection, the inner frame 2 moves at a low speed relative to the outer frame 9, and further can drive the piston rod to extend and retract. When the linear telescopic assembly 1 is a hydraulic cylinder, the non-powered state of the hydraulic cylinder is that the oil inlet and the oil return of the hydraulic cylinder are communicated with the oil tank (for example, the reversing valve is in the middle position or the oil circuit is bypassed), and the oil can flow freely, at this time, the first transmission end and the second transmission end are in transmission connection, the inner frame 2 moves at a low speed relative to the outer frame 9, and further can drive the piston rod to extend and retract.

[0027] Further preferably in the embodiment of the utility model, the first transmission end comprises two gears 3 and a transmission shaft, the two gears 3 are fixedly connected with the two ends of the transmission shaft 5, the transmission shaft 5 is installed on the shaft mounting seat 11 hinged with the inner frame 2, the power assembly is connected with the transmission shaft 5 and can drive the gear 3 shaft to rotate around itself, the second transmission end comprises two racks 10, the two racks 10 are fixedly installed on the two sides of the outer frame 9 respectively, the clutch unit 6 is connected with the shaft mounting seat 11 and can drive the shaft mounting seat 11 to move close to or away from the inner frame 2, thereby making the gear 3 separate or engage with the rack 10.

[0028] Further preferably in the embodiment of the utility model, the motor is connected with the speed reducer, the speed reducer is in transmission connection with the transmission shaft 5, the clutch unit 6 is a telescopic cylinder, the fixed end of the telescopic cylinder is fixedly connected with the inner frame 2, and the free end of the telescopic cylinder is connected with the shaft mounting seat 11. The telescopic cylinder extends out, pushes the transmission shaft 5 to rise, makes the gear 3 separate from the rack 10, the telescopic cylinder retracts, pulls the transmission shaft 5 to descend, and makes the gear 3 engage with the rack 10.

[0029] Further preferably in the embodiment of the utility model, the outer frame 9 has a sliding track 8, the inner frame 2 is arranged in the outer frame 9 and is in sliding connection with the sliding track 8 through the sliding block 7.

[0030] Further preferably in the embodiment of the utility model, the rack 10 is parallel with the sliding track 8.

[0031] When high-speed movement is needed, the motor does not provide power, the cylinder or hydraulic cylinder of the high-speed driving mechanism 1 is used to deliver power, drives the inner frame 2 and the power unit 4, the clutch unit 6, the transmission shaft 5 and the gear 3 on the inner frame 2, and realizes high-speed driving through the sliding block 7 quickly sliding on the sliding track 8.

[0032] When low-speed movement is needed, the cylinder or hydraulic cylinder of the high-speed driving mechanism does not provide power, the motor drives the transmission shaft 5 to start self-transmission, meanwhile the telescopic cylinder of the clutch unit 6 extends out, can drive the transmission shaft 5 and the power unit 4 installed on the transmission shaft 5 to start slowly descending, until the gear 3 and the rack 10 engage, the transmission shaft 5 rotates, drives the gear 3 to move on the rack 10, and further drives the inner frame 2 to move on the sliding track 8 through the sliding block 7, simultaneously drives the cylinder or hydraulic cylinder of the high-speed driving mechanism in the state of no power to move relative to the outer frame 9, and realizes low-speed driving.

[0033] The principle and implementation mode of the utility model are described by applying specific examples, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A high-low speed conversion device, characterized by: The application relates to a high-speed and low-speed driving mechanism, which comprises an outer frame, an inner frame, a high-speed driving mechanism and a low-speed driving mechanism, the inner frame is slidingly installed in the outer frame, the high-speed driving mechanism comprises a linear telescopic assembly, one end of the linear telescopic assembly is connected with the outer frame, and the other end is connected with the inner frame; the low-speed driving mechanism comprises a power assembly and a transmission assembly, the transmission assembly comprises a first transmission end, a second transmission end and a clutch unit, the first transmission end is connected with the power assembly, the clutch unit is installed on the inner frame, and the clutch unit is used for disconnecting or connecting the transmission connection between the first transmission end and the second transmission end; when the low-speed driving mechanism works, the linear telescopic assembly is in a non-powered state, the clutch unit connects the first transmission end and the second transmission end in transmission connection, the inner frame moves at a low speed relative to the outer frame, and the linear telescopic assembly moves along with the inner frame; when the high-speed driving mechanism works, the clutch unit disconnects the transmission connection between the first transmission end and the second transmission end, the linear telescopic assembly is in a powered state, and the inner frame moves at a high speed relative to the outer frame.

2. The high-low speed conversion device of claim 1, wherein: The linear telescopic assembly is a pneumatic cylinder or a hydraulic cylinder.

3. The high-low speed conversion device of claim 1, wherein: The first transmission end comprises two gears and a transmission shaft, the two gears are fixedly connected with two ends of the transmission shaft, the transmission shaft is installed on a shaft mounting seat which is hinged with the inner frame, the power assembly is connected with the transmission shaft and can drive the transmission shaft to rotate around itself; the second transmission end comprises two racks, the two racks are fixedly installed on two sides of the outer frame respectively; the clutch unit is connected with the shaft mounting seat and can drive the shaft mounting seat to move close to or away from the inner frame, so as to separate or engage the gears and the racks.

4. The high-low speed conversion device of claim 3, wherein: The power assembly comprises a motor and a speed reducer, the motor is connected with the speed reducer, and the speed reducer is in transmission connection with the transmission shaft.

5. The high-low speed conversion device of claim 4, wherein: The clutch unit is a telescopic pneumatic cylinder, a fixed end of the telescopic pneumatic cylinder is fixedly connected with the inner frame, and a free end of the telescopic pneumatic cylinder is connected with the shaft mounting seat.

6. The high-low speed conversion device of claim 3, wherein: The outer frame has a sliding track, the inner frame is arranged in the outer frame and is slidingly connected with the sliding track through a sliding block.

7. The high-low speed conversion device of claim 6, wherein: The racks are parallel to the sliding track.

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