Electric cam jacking type transplanter

Abstract

The utility model provides an electric cam jacking type transplanter which comprises a plurality of rows of conveying belts, a jacking type driving mechanism is arranged below the conveying belts, the jacking type driving mechanism comprises a jacking support and two driving shafts, the jacking support is connected with a shell in a sliding mode in the vertical direction, the driving shafts are connected with the shell in a rotating mode, a plurality of electric rollers are arranged on the jacking support, and the driving shafts are connected with the driving shafts in a rotating mode. Two parallel driving shafts are arranged below the jacking support, cams used for driving the jacking support to be close to or away from the conveying belt are arranged on the driving shafts, and a motor and a speed reducer are arranged on the driving shafts. According to the electric cam jacking type transplanter, the jacking support is adopted to drive the electric roller to be close to or away from the conveying belt, driving force is provided for the conveying belt when the electric roller is matched with the conveying belt, the whole transplanter is small in thickness and high in bearing capacity, and when objects do not need to be conveyed, the electric roller is away from the conveying belt, so that the pressure of the conveying belt is relieved; deformation of the conveying belt due to long-term tightening is avoided, and the service life of the conveying belt is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to an electric cam lifting type transplanter. Background Art

[0002] In the prior art, a conveyor belt consists of a mounting bracket and a driving wheel and a driven wheel provided on the mounting bracket. A belt is wound around the driving wheel and the driven wheel. In order to prevent slipping between the belt and the driving wheel and the driven wheel, the belt needs to be tensioned and installed on the driving wheel and the driven wheel. Once the belt is installed, it is always in a tensioned state whether it is working or not. After long-term use, the belt will be stretched and deformed, and manual adjustment is required, which affects normal production. If the belt is severely deformed, it will also affect the normal conveying of items. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: in order to overcome the deficiency that once the belt is installed in the prior art, it is always in a tensioned state whether it is working or not, and after long-term use, the belt will be stretched and deformed, and manual adjustment is required, which affects normal production. If the belt is severely deformed, it will also affect the normal conveying of items, the utility model provides an electric cam lifting type transplanter.

[0004] The technical solution adopted by the utility model to solve its technical problem is: an electric cam lifting type transplanter, including multiple rows of conveyor belts arranged in a box-shaped housing. A lifting driving mechanism is provided below the conveyor belt. The lifting driving mechanism includes a lifting bracket and at least two driving shafts. The lifting bracket is slidably connected to the housing in the vertical direction. The driving shafts are horizontally arranged in the housing and rotatably connected to the housing. A plurality of electric rollers are provided on the lifting bracket. At least two parallel driving shafts are provided below the lifting bracket. Cams for driving the lifting bracket to approach or move away from the conveyor belt are provided on the driving shafts. Motors and speed reducers are provided on the driving shafts. A first proximity switch is provided on the lifting bracket. An adjusting frame is provided in the housing. A high-position proximity switch and a low-position proximity switch that cooperate with the first proximity switch are provided on the adjusting frame. The first proximity switch, the high-position proximity switch, and the low-position proximity switch are signal-connected to the motor speed reducer.

[0005] The position of the conveyor belt inside the housing is fixed; the electric roller on the lifting support serves as the power source for the conveyor belt. When the position of the lifting support rises, the electric roller approaches and closely adheres to the belt of the conveyor belt, and drives the belt of the conveyor belt to rotate through friction; when the position of the lifting support drops, the electric roller moves away from the belt of the conveyor belt, and the conveyor belt stops rotating. The motor reducer is used to drive the drive shaft to rotate, thereby driving the cam provided on the drive shaft to rotate. Multiple cams cooperate with each other to control the lifting support to rise or fall in the vertical direction. By adjusting the height of the high proximity switch and the low proximity switch on the adjusting frame, when the first proximity switch corresponds to the high proximity switch, the long diameter of the cam cooperates with the lifting support. After the motor reducer receives the signal from the first proximity switch, it stops starting. At this time, the electric roller closely adheres to the belt of the conveyor belt; when the first proximity switch cooperates with the low proximity switch, the short diameter of the cam cooperates with the lifting support. After the motor reducer receives the signal from the first proximity switch, it stops starting. At this time, the electric roller is separated from the belt of the conveyor belt.

[0006] Furthermore, in order to extend the service life of the cam, a rubber wheel corresponding to the position of the cam is rotatably provided on the lifting support. By corresponding the rubber wheel to the position of the cam, when the cam rotates, the rubber wheel rotates synchronously. Compared with the cam directly abutted on the lifting support, the frictional loss of the cam is reduced, and the service life of the transplanter is extended.

[0007] Furthermore, the conveyor belt includes two opposite brackets, both ends of the brackets are fixedly connected to the housing, a row of first supporting wheels is provided between the upper sides of the brackets, a row of second supporting wheels is provided between the lower sides of the brackets, a belt is wound around the first supporting wheels and the second supporting wheels, and the electric roller is provided between any two adjacent second supporting wheels.

[0008] The first supporting wheels support the belt to convey items; when the electric roller approaches the belt, two supporting wheels are provided on both sides of the electric roller, so that the contact area between the belt and the electric roller is increased, the friction between the electric roller and the belt is increased, and the belt is prevented from slipping. Furthermore, in order to prevent the belt from sagging on the first supporting wheels and the second supporting wheels when the electric roller moves away from the belt of the conveyor belt, a transition plate fixedly connected to the bracket is provided between any two adjacent first supporting wheels, a tensioning wheel cooperating with the belt is provided below the transition plate, and a tensioning spring is provided between the tensioning wheel and the transition plate. The belt is straightened by the tensioning wheel, avoiding the belt from being scattered on the supporting wheels and avoiding skewing when the electric roller cooperates with the belt next time. The tensioning force of the tensioning wheel is much smaller than the tensioning force required when conveying items and will not affect the service life of the belt.

[0009] Furthermore, a plurality of guide columns are provided at the lower end of the lifting support, and linear bearings cooperating with the guide columns are provided at the bottom of the housing.

[0010] Further, in order to drive the cams on each drive shaft to act synchronously, so as to control the lifting support to rise or fall in the vertical direction, first synchronous gears are provided at both the output end of the reducer and on the drive shafts. A first synchronous belt is wound around between the first synchronous gears. Second synchronous gears are provided on the drive shafts, and a second synchronous belt is wound around between the second synchronous gears. The position angles of the cams on the drive shafts are the same.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: An electric cam lifting type transplanter provided by the present utility model uses a lifting support to drive an electric roller to approach or move away from a conveyor belt. When the electric roller cooperates with the conveyor belt, it provides driving force for the conveyor belt. The overall equipment has a small thickness, low installation space requirements, stable operation, and high bearing capacity. When there is no need to convey items, the electric roller moves away from the conveyor belt, reducing the pressure on the conveyor belt, avoiding deformation caused by long-term tension of the conveyor belt, and extending the service life of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present utility model will be further described below with reference to the drawings and embodiments.

[0013] Figure 1 is a schematic structural diagram of the best embodiment of the present utility model;

[0014] Figure 2 is a schematic internal structure diagram of the conveyor belt;

[0015] <{ Figure 3 [[ID= {20]]is a schematic structural diagram of the lifting support;

[0016] Figure 4 is a schematic transmission structure diagram of the cam.

[0017] In the figure: 1. Housing, 11. Linear bearing, 12. Guide post, 13. High-position proximity switch, 14. Adjusting frame, 15. Low-position proximity switch, 2. Conveyor belt, 21. Support, 22. First idler pulley, 23. Second idler pulley, 24. Belt, 25. Transition plate, 26. Tensioning pulley, 27. Tensioning spring, 3. Lifting support, 31. Rubber wheel, 32. First proximity switch, 4. Drive shaft, 41. Cam, 5. Electric roller, 6. Reducer, 7. First synchronous belt, 8. Second synchronous belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will now be described in detail with reference to the drawings. This figure is a simplified schematic diagram, which only shows the basic structure of the present utility model in a schematic manner, so it only shows the components related to the present utility model.

[0019] As Figures 1-4As shown in the figure, an electric cam lifting type transplanter of the utility model includes three rows of conveyor belts 2 arranged in a box-shaped housing 1. The conveyor belt 2 includes two brackets 21 arranged opposite to each other. Both ends of the bracket 21 are fixedly connected to the housing 1. A row of first supporting wheels 22 is arranged between the upper sides of the brackets 21, and a row of second supporting wheels 23 is arranged between the lower sides of the brackets 21. A belt 24 is wound around the first supporting wheels 22 and the second supporting wheels 23. A transition plate 25 fixedly connected to the bracket 21 is arranged between any two adjacent first supporting wheels 22. A tensioning wheel 26 cooperating with the belt 24 is arranged below the transition plate 25. A tensioning spring 27 is arranged between the tensioning wheel 26 and the transition plate 25.

[0020] A lifting type driving mechanism is arranged below the conveyor belt 2. The lifting type driving mechanism includes a lifting bracket 3 and two driving shafts 4. The lifting bracket 3 is slidably connected to the housing 1 in the vertical direction. A plurality of guide columns 12 are arranged at the lower end of the lifting bracket 3. A linear bearing 11 cooperating with the guide columns 12 is arranged at the bottom of the housing 1.

[0021] The driving shaft 4 is horizontally arranged in the housing 1 and is rotationally connected to the housing 1. Two parallel electric rollers 5 are arranged on the lifting bracket 3. The electric rollers 5 are arranged between any two adjacent second supporting wheels 23. Two parallel driving shafts , two driving shafts 4 are symmetrically arranged with the center of the lifting bracket 3 as the center. A cam 41 for driving the lifting bracket 3 to approach or move away from the conveyor belt 2 is arranged on the driving shaft 4. A rubber wheel 31 corresponding to the position of the cam 41 is rotatably arranged on the lifting bracket 3.

[0022] A motor and a reducer 6 are arranged on the driving shaft 4. A first proximity switch 32 is arranged on the lifting bracket 3. An adjusting frame 14 is arranged in the housing 1. A high-position proximity switch 13 and a low-position proximity switch 15 cooperating with the first proximity switch 32 are arranged on the adjusting frame 14. The first proximity switch 32, the high-position proximity switch 13, and the low-position proximity switch 15 are signal-connected to the motor reducer 6. First synchronous gears are arranged at the output end of the reducer 6 and on the driving shaft 4. A first synchronous belt 7 is wound around the first synchronous gears. Second synchronous gears are arranged on the driving shafts 4. A second synchronous belt 8 is wound around the second synchronous gears. The position angles of the cams 41 on the driving shafts 4 are the same.

[0023] Working process:

[0024] In the initial state, when the short diameter of the cam 41 is timed with the rubber wheel 31 on the lifting bracket 3, the electric roller 5 is not in contact with the belt 24 of the conveyor belt 2, and the belt 24 is kept in a taut state through the tensioning wheel 26.

[0025] When it is necessary to convey an item, the motor reducer 6 drives the drive shaft 4 to rotate through the first synchronous belt 7. The two drive shafts 4 rotate synchronously through the second synchronous belt 8. The four cams 41 cooperate with each other to lift the jacking bracket 3. When the first proximity switch 32 corresponds to the high-position proximity switch 13, the first proximity switch 32 transmits a signal to the controller, and the controller controls the motor reducer 6 to stop rotating. At this time, the long diameter of the cam 41 cooperates with the rubber wheel 31 on the jacking bracket 3, and the electric roller 5 is closely attached to the belt 24 of the conveyor belt 2. When the electric roller 5 rotates, it drives the belt 24 to rotate through friction, so as to realize the conveyance of the item.

[0026] When stopping the conveyance of the item, the electric roller 5 stops rotating. The motor reducer 6 drives the drive shaft 4 to rotate through the first synchronous belt 7. The two drive shafts 4 rotate synchronously through the second synchronous belt 8. The four cams 41 cooperate with each other to control the jacking bracket 3 to descend smoothly. When the first proximity switch 32 corresponds to the low-position proximity switch 15, the first proximity switch 32 transmits a signal to the controller, and the controller controls the motor reducer 6 to stop rotating. At this time, the short diameter of the cam 41 cooperates with the rubber wheel 31 on the jacking bracket 3, and the electric roller 5 is separated from the belt 24 of the conveyor belt 2. The tension pulley 26, the tension spring 27 and the transition plate 25 cooperate with each other to keep the belt 24 always in a straight state, avoiding the belt 24 from sagging and skewing on the first supporting roller 22 and the second supporting roller 23.

[0027] In the present utility model, directions and references (such as up, down, left, right, etc.) may only be used to assist in the description of the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the claimed subject matter is defined only by the appended claims and their equivalents.

[0028] Inspired by the above ideal embodiments of the present utility model, through the above description, relevant workers can make various changes and modifications completely within the scope not departing from the present utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electric cam lift transplanter, characterized by: The invention comprises a plurality of conveyor belts (2) arranged in a box-type shell (1), a lifting drive mechanism is provided below the conveyor belt (2), the lifting drive mechanism comprises a lifting bracket (3) and at least two drive shafts (4), the lifting bracket (3) is slidably connected to the shell (1) in a vertical direction, the drive shaft (4) is horizontally arranged in the shell (1) and is rotatably connected to the shell (1), a plurality of electric rollers (5) are provided on the lifting bracket (3), at least two parallel drive shafts (4) are provided below the lifting bracket (3), and the drive shaft (4) is provided with a plurality of electric rollers (5) for A cam (41) drives the lifting bracket (3) to move closer to or away from the conveyor belt (2), a motor and a reducer (6) are provided on the driving shaft (4), a first proximity switch (32) is provided on the lifting bracket (3), an adjustment frame (14) is provided in the housing (1), a high-position proximity switch (13) and a low-position proximity switch (15) that cooperate with the first proximity switch (32) are provided on the adjustment frame (14), and the first proximity switch (32), the high-position proximity switch (13), and the low-position proximity switch (15) are connected to the motor reducer (6) for signal.

2. The electric cam lift transplanter according to claim 1, characterized in that: A rubber wheel (31) is rotatably provided on the lifting bracket (3) and corresponds to the position of the cam (41).

3. The electric cam lift transplanter according to claim 1, characterized in that: The conveyor belt (2) includes two brackets (21) arranged opposite to each other, both ends of the brackets (21) are fixedly connected to the housing (1), a row of first supporting rollers (22) are provided between the upper sides of the brackets (21), a row of second supporting rollers (23) are provided between the lower sides of the brackets (21), a belt (24) is wound around the first supporting rollers (22) and the second supporting rollers (23), and the electric roller (5) is provided between any two adjacent second supporting rollers (23).

4. The electric cam lift transplanter according to claim 3, characterized in that: A transition plate (25) fixedly connected to the bracket (21) is provided between any two adjacent first supporting wheels (22), a tensioning wheel (26) cooperating with the belt (24) is provided below the transition plate (25), and a tensioning spring (27) is provided between the tensioning wheel (26) and the transition plate (25).

5. The electric cam lift transplanter according to claim 1, characterized in that: A plurality of guide columns (12) are provided at the lower end of the lifting bracket (3), and a linear bearing (11) cooperating with the guide columns (12) is provided at the bottom of the housing (1).

6. The electric cam lift transplanter according to claim 1, characterized in that: The output end of the reducer (6) and the drive shaft (4) are both provided with a first synchronous gear, a first synchronous belt (7) is wound between the first synchronous gears, and the drive shaft (4) is both provided with a second synchronous gear, a second synchronous belt (8) is wound between the second synchronous gears, and the position angles of the cams (41) on the drive shafts (4) are the same.

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