An electric remote-controlled self-propelled grain turning machine

Abstract

The invention discloses an electric remote-controlled self-propelled grain turning and drying machine, which relates to the field of agricultural turning and drying machinery, comprises a frame, and also comprises a turning and drying mechanism, a controller, a storage battery, a ridging mechanism, a remote control device and a rear wheel steering mechanism arranged on the frame; the turning and drying mechanism comprises a turning and drying roller, which is installed on the front side of the frame and can be driven to rotate by a driving component. The turning and drying machine designed by the invention can control the operation process of the turning and drying machine by a remote control device in a large-scale drying or storage scenario, and the rotation of the left reduction motor and the right reduction motor respectively drives the two turning and drying rollers to rotate. Since the wheel diameter of the traveling wheel is slightly larger than the turning and drying roller, the brush strips on the turning and drying rollers are inserted into the grain pile, and the grains are thrown back a certain distance to realize grain turning; compared with the existing turning and drying device, the turning and drying rollers and the brush strips are used in combination to realize the turning and drying and moving integrated design, and no motor vehicle towing and moving is required, thereby avoiding the problem of the motor vehicle crushing the grains.

Description

Technical Field

[0001] The invention belongs to the field of agricultural turning and drying machinery, and in particular relates to an electric remote-controlled self-propelled grain turning and drying machine. Background Art

[0002] After harvest, grains usually have a high moisture content, which is far from the moisture content required for storage. Usually, large-scale drying and drying are used to reduce the moisture content before large-scale storage. Otherwise, high moisture content may cause grains to mold and cause losses. During large-scale drying or large-scale storage, it is necessary to turn the grains over several times to ensure that the grains on the lower layer are evenly dried.

[0003] Traditional drying methods mostly use manual mechanical drying, which requires long-term mechanical drying under the scorching sun, with high labor intensity and low operating efficiency.

[0004] Later, small tractors, motorcycles and other motor vehicles were used as traction tools, and drying rakes were hung for drying operations. However, these motor vehicles are powered by gasoline or diesel engines, and their weight is generally too large, which can easily cause grain crushing. In addition, the operating speed is greatly affected by human factors, and it is difficult to maintain the optimal operating speed. Too fast speed leads to poor drying effect, and too slow speed leads to a high crushing rate.

[0005] Therefore, we provide an electric remote-controlled self-propelled grain turning machine to solve the above problems. Summary of the invention

[0006] In view of the problems that the current turning and drying operations using manual mechanical methods and hanging turning and drying rakes are insufficient, the present invention provides an electric remote-controlled self-propelled grain turning and drying machine.

[0007] The solution adopted by the present invention to solve its technical problems is: an electric remote-controlled self-propelled grain turning machine, including a frame, and also including a turning mechanism, a controller, a battery, a ridging mechanism, a remote control device and a rear wheel steering mechanism arranged on the frame; the turning mechanism includes a turning roller, which is installed on the front side of the frame and can be driven to rotate by a driving component, and the outer wall of the turning roller is surrounded by N detachable brush strips.

[0008] The ridging mechanism includes a support rod and N groups of parallel ridging units, the support rod is installed on the frame and located at the rear side of the turning roller, the ridging unit includes a ridging plate, the ridging plate is installed at the bottom of the support rod through a fixing rod, and a brush block is provided at the bottom of the ridging plate; the rear wheel steering mechanism includes a running wheel and a steering assembly, the running wheel is installed on the rear side of the frame, and the steering assembly is installed on the frame and can drive the steering of the running wheel.

[0009] The storage battery is electrically connected to the controller, the remote control device is connected to the controller, and the controller is respectively connected to the driving component and the steering assembly.

[0010] As a preferred technical solution of the present invention, there are two turning rollers, which are symmetrically arranged along the central axis of the frame. The driving component includes a left reduction motor and a right reduction motor, which are both installed on the frame. The output shafts of the left reduction motor and the right reduction motor are respectively fixedly connected to the two turning rollers, and the left reduction motor and the right reduction motor are respectively connected to the controller.

[0011] As a preferred technical solution of the present invention, a plurality of trapezoidal grooves are formed around the outer wall of the turning roller, and a trapezoidal block is installed at the bottom end of the brush strip. The trapezoidal block is arranged in the trapezoidal groove and can slide axially along the trapezoidal groove.

[0012] As a preferred technical solution of the present invention, a detachable retaining ring is provided at the outer end of the turning roller, and the retaining ring is in contact with the outer side surface of the trapezoidal block.

[0013] As a preferred technical solution of the present invention, the retaining ring is installed on the outer side of the sun turning roller by bolts.

[0014] As a preferred technical solution of the present invention, the steering assembly includes a steering motor and a mounting seat, the mounting seat is installed on the frame and located above the traveling wheel, the mounting seat is installed with a rear wheel axle through a bearing, the bottom end of the rear wheel axle is installed with a traveling wheel, the top end of the rear wheel axle is provided with a driven bevel gear, the steering motor is installed on the frame, and the output shaft thereof is provided with a driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear.

[0015] As a preferred technical solution of the present invention, the wheel diameter of the traveling wheel is larger than the diameter of the sun turning roller.

[0016] As a preferred technical solution of the present invention, an installation groove is opened in the ridging board, and a brush block is arranged in the installation groove. The brush block is installed at the bottom of the fixed rod, and its bottom protrudes from the ridging board. The bristles of the brush block are downward and in contact with the ground, and the ridging board is higher than the ground.

[0017] As a preferred technical solution of the present invention, a body angular displacement sensor is installed on the frame, and the body angular displacement sensor is connected to the controller.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The turning and drying machine designed in the present invention can control the operation process of the turning and drying machine through a remote control device in large-scale drying or storage scenarios. The rotation of the left reduction motor and the right reduction motor respectively drives the two turning and drying rollers to rotate. Since the wheel diameter of the walking wheel is slightly larger than the turning and drying roller, the brush strips on the turning and drying rollers are inserted into the grain pile and the grains are thrown back a certain distance to realize grain turning. Compared with the existing turning and drying devices, the turning and drying rollers and the brush strips are used in combination to realize an integrated design of turning and drying and moving. There is no need for motor vehicle to tow and move, and the problem of motor vehicle crushing grains is avoided. At the same time, the design of the brush strips can further reduce the grain breakage rate during the turning and drying process. In addition, remote control operation reduces labor intensity, and the fixed speed operation of the controller facilitates long-term constant speed operation, ensuring the turning and drying quality and efficiency, thereby bringing convenience to users and meeting usage requirements.

[0020] 2. The present invention is provided with a plurality of ridging units. When the turning machine is moving forward, the ridging plates push the grains in front to both sides. After ridging, the drying surface area is increased, thereby enhancing the drying effect. Meanwhile, the bristles at the bottom of the brush block are in contact with the ground, while the ridging plates are not in contact with the ground. This achieves a ridging effect while avoiding squeezing and crushing of the grains.

[0021] 3. The present invention provides a traveling wheel, a driving bevel gear, a driven bevel gear, a steering motor and a rear wheel shaft. The user can control the operation of the steering motor through a remote control device, and then control the independent steering of the traveling wheel to reduce the turning radius.

[0022] 4. The turning and drying machine designed by the present invention has an ingenious and unique structure, can be used for many types of grains, is electrically controlled, has stable power output, and is designed with a low front and a high back. During the turning and drying process, the center of gravity is on the turning and drying roller, and the turning and drying effect is good; remote control reduces labor intensity, and constant speed operation ensures the required work quality.

[0023] 5. The present invention can realize the rapid disassembly and assembly of the brush strips by setting trapezoidal grooves and trapezoidal blocks, so as to facilitate the replacement of brush strips of different heights according to usage needs, and also facilitate the replacement of a single damaged brush strip, further improving the practicality of the turning machine.

[0024] 6. The present invention sets a body angular displacement sensor. When the left turning roller encounters a large amount of grain accumulation and the brush strip encounters a large resistance, while the right turning roller has less grain and the brush strip contacts the ground, causing the frame to deviate, the body angular displacement sensor can monitor and process the deviation information of the frame and transmit the data to the controller. Then the controller accelerates the rotation of the left reduction motor and slows down the rotation of the right reduction motor to ensure the stable movement of the turning machine, reduce the difficulty of operating the turning machine, and further facilitate the use of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention;

[0026] Figure 2 It is a front view structural schematic diagram of Embodiment 1 of the present invention;

[0027] Figure 3 This is a right side structural diagram of Embodiment 1 of the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of a ridging mechanism according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of a drying roller according to a first embodiment of the present invention;

[0030] Figure 6 This is a control system diagram of Embodiment 1 of the present invention;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of the drying roller and the retaining ring according to the second embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the front view structure of Embodiment 3 of the present invention;

[0033] Fig. 9 This is a control system diagram of Embodiment 3 of the present invention;

[0034] Fig.10 It is a left-side cross-sectional structural schematic diagram of the storage state of the turning roller of the fourth embodiment of the present invention;

[0035] Fig.11 It is a left-side cross-sectional structural schematic diagram of the sun-turning roller in the extended state according to the fourth embodiment of the present invention;

[0036] Fig.12 This is the control system of embodiment 4 of the present invention.

[0037] In the figure: 1 frame, 2 battery, 3 controller, 41 walking wheel, 42 driving bevel gear, 43 driven bevel gear, 44 steering motor, 45 rear wheel shaft, 46 mounting seat, 51 left reduction motor, 52 right reduction motor, 53 turning roller, 54 brush strip, 55 trapezoidal groove, 56 trapezoidal block, 61 support rod, 62 fixing rod, 63 ridging plate, 64 brush block, 71 retaining ring, 72 bolt, 8 vehicle body angular displacement sensor, 91 forward and reverse motor, 92 screw rod one, 93 screw rod two, 94 nut, 95 ground rod, 96 movable groove, 97 conductive slip ring. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0039] See also Figure 1-12 The present invention provides a technical solution of an electric remote-controlled self-propelled grain turning machine:

[0040] Embodiment 1:

[0041] according to Figure 1-6 As shown, it includes a frame 1, and also includes a turning and drying mechanism, a controller 3, a battery 2, a ridging mechanism, a remote control device and a rear wheel steering mechanism arranged on the frame 1.

[0042] The turning and drying mechanism includes a turning and drying roller 53 and a driving component. There are two turning and drying rollers 53, and the two turning and drying rollers 53 are symmetrically arranged along the central axis of the frame 1. The driving component includes a left reduction motor 51 and a right reduction motor 52. The left reduction motor 51 and the right reduction motor 52 are both installed on the frame 1. The output shafts of the left reduction motor 51 and the right reduction motor 52 are respectively fixedly connected to the two turning and drying rollers 53. The left reduction motor 51 and the right reduction motor 52 are equipped with reducers, which can output low speed and large torque to drive the turning and drying rollers 53 to rotate for turning and drying operations. N detachable brush strips 54 are installed around the outer wall of the turning and drying roller 53. The brush strip 54 is a strip clamp that fixes a certain density of brush wires into a brush monomer. The rotation of the left reduction motor 51 and the right reduction motor 52 respectively drives the two turning and drying rollers 53 to rotate. Since the wheel diameter of the walking wheel 41 is slightly larger than the turning and drying roller 53, the turning and drying roller 5 The brush strips 54 on 3 are inserted into the grain pile and the grains are thrown back a certain distance to realize grain turning. Compared with the existing turning and drying device, the turning and drying rollers 53 and the brush strips 54 are used together to realize the integrated design of turning and drying and moving. There is no need for motor vehicle to tow and move, and the problem of motor vehicle crushing grains is avoided. At the same time, the design of the brush strips 54 can further reduce the grain breakage rate during the turning and drying process. The outer wall of the turning and drying roller 53 is surrounded by a plurality of trapezoidal grooves 55. The bottom end of the brush strips 54 is installed with a trapezoidal block 56. The trapezoidal block 56 is arranged in the trapezoidal groove 55 and can slide axially along the trapezoidal groove 55. By setting the trapezoidal groove 55 and the trapezoidal block 56, the brush strips 54 can be quickly disassembled and assembled, so that the brush strips 54 of different heights can be replaced according to the needs of use. At the same time, it is also convenient to replace a single damaged brush strip 54, further improving the practicality of the turning and drying machine.

[0043] The ridging mechanism includes a support rod 61 and N groups of ridging units arranged in parallel. The support rod 61 is installed on the frame 1 and is located at the rear side of the turning roller 53. The ridging unit includes a ridging plate 63. The ridging plate 63 is installed at the bottom of the support rod 61 through a fixed rod 62. A mounting groove is opened in the ridging plate 63. A brush block 64 is arranged in the mounting groove. The brush block 64 is installed at the bottom of the fixed rod 62, and its bottom protrudes from the ridging plate 63. The bristles of the brush block 64 face downward and contact the ground. The ridging plate 63 is slightly higher than the ground. By setting up multiple ridging units, when the turning machine is moving forward, the ridging plate 63 pushes the grains in front to both sides. After ridging, the drying surface area is increased, thereby enhancing the drying effect. At the same time, the bristles at the bottom of the brush block 64 contact the ground, while the ridging plate 63 does not contact the ground. While having a ridging effect, the grains are prevented from being squeezed and crushed.

[0044] The rear wheel steering mechanism includes a running wheel 41 and a steering assembly. The running wheel 41 is arranged on the rear side of the frame 1. The steering assembly is installed on the frame 1 and can drive the running wheel 41 to steer. The steering assembly includes a steering motor 44 and a mounting seat 46. The mounting seat 46 is installed on the frame 1 and is located above the running wheel 41. The mounting seat 46 is installed with a rear wheel shaft 45 through a bearing. The bottom end of the rear wheel shaft 45 is installed with the running wheel 41. The top end of the rear wheel shaft 45 is provided with a driven bevel gear 43. The steering motor 44 is installed on the frame 1, and an active bevel gear 42 is provided on its output shaft. The active bevel gear 42 is meshed with the driven bevel gear 43. The wheel diameter of the running wheel 41 is larger than the diameter of the turning roller 53. By arranging the running wheel 41, the active bevel gear 42, the driven bevel gear 43, the steering motor 44 and the rear wheel shaft 45, the user can control the operation of the steering motor 44 through a remote control device, and then control the independent steering of the running wheel 41 to reduce the turning radius.

[0045] The battery 2 is electrically connected to the controller 3, the remote control device is connected to the controller 3, the controller 3 is respectively connected to the left reduction motor 51, the right reduction motor 52 and the steering motor 44, the controller 3 independently controls the rotation speeds of the left reduction motor 51, the right reduction motor 52 and the steering motor 44 through a three-channel controller, and its functions are: remote control operation reduces labor intensity, and the fixed speed operation of the controller 3 is convenient for long-term constant speed operation, ensuring the quality and efficiency of turning and drying, thereby bringing convenience to users and meeting usage requirements.

[0046] When used specifically, the electric remote-controlled self-propelled grain turning and drying machine of the present invention is first transported to a drying yard, and according to the drying requirements of the grains, a brush strip 54 of a suitable height is selected, and a plurality of brush strips 54 are inserted into the trapezoidal groove 55 one by one, and the brush strips 54 are installed. Then, the left reduction motor 51 and the right reduction motor 52 are controlled to work by a remote control device, and the rotation of the left reduction motor 51 and the right reduction motor 52 respectively drives the two turning and drying rollers 53 to rotate. Since the wheel diameter of the walking wheel 41 is slightly larger than the turning and drying roller 53, the brush strip 54 on the turning and drying roller 53 is inserted into the grain pile and throws the grain backward for a certain distance to realize grain layer turning. At the same time, the turning and drying roller 53 and the brush strip 54 drive the frame 1 to gradually move forward during the rotation process. There are multiple ridge forming units. As the turning and drying machine moves forward, the ridge forming plate 63 pushes the grains in front to both sides. After ridge forming, the drying surface area is increased, thereby enhancing the drying effect.

[0047] When steering is required, the steering motor 44 is controlled by the remote control device to rotate, and the steering motor 44 drives the active bevel gear 42 to rotate. The active bevel gear 42 engages with the driven bevel gear 43 to rotate and steer the travel wheel 41, thereby rotating the entire turning machine to turn and dry grains in other areas.

[0048] Embodiment 2:

[0049] Based on the first embodiment, the same points are not repeated here, and the differences are as follows: Figure 7 As shown, a detachable retaining ring 71 is provided at the outer end of the turning roller 53. The retaining ring 71 contacts the outer side surface of the trapezoidal block 56. The retaining ring 71 is installed on the outer side surface of the turning roller 53 by means of bolts 72. By providing the retaining ring 71 and the bolts 72, the problem of the brush strip 54 sliding out of the trapezoidal groove 55 during rotation can be avoided, thereby further ensuring the stability of the brush strip 54 during use.

[0050] Embodiment three:

[0051] Based on the first embodiment, the same points are not repeated here, and the differences are as follows: Figure 8 and Fig. 9 As shown, a body angular displacement sensor 8 is installed on the frame 1, and the body angular displacement sensor 8 is connected to the controller 3. By setting the body angular displacement sensor 8, when the left turning roller 53 encounters a large amount of grain accumulation and the brush strip 54 is subject to greater resistance, while the right turning roller 53 has less grain and the brush strip 54 contacts the ground, causing the frame 1 to deviate, the body angular displacement sensor 8 can monitor and process the deviation information of the frame 1 and transmit the data to the controller 3, and then the controller 3 accelerates the rotation of the left reduction motor 51 and slows down the rotation of the right reduction motor 52 to ensure the stable forward movement of the turning machine, reduce the difficulty of operating the turning machine, and further facilitate the user to use it.

[0052] Embodiment 4:

[0053] Based on the first and third embodiments, the similarities are not repeated here, and the differences are as follows: Fig.10 , Fig.11 and Fig.12As shown, the interior of the turning roller 53 is hollow, and the outer wall of the turning roller 53 is surrounded by H movable grooves 96, the number of the movable grooves 96 is 3-6, and the movable grooves 96 are staggered with the trapezoidal grooves 55. The inner cavity of the turning roller 53 is provided with a screw 1 92 and a screw 2 93, and the opposite ends of the screw 1 92 and the screw 2 93 are fixedly connected, and the opposite ends of the screw 1 92 and the screw 2 93 are both equipped with bearings 2, and the two bearings 2 are respectively installed on the left and right side walls of the turning roller 53, and the screw 1 92 and the screw 2 93 are both threadedly connected with nuts 94, and the outer wall of the nut 94 is surrounded by There are H folding floor units, which include two floor rods 95. The top ends of the two floor rods 95 are hinged together and arranged in corresponding movable grooves 96. The bottom ends of the two floor rods 95 are respectively hinged to two hinge seats, and the two hinge seats are respectively installed on two nuts 94. The outer side surface of the turning roller 53 is installed with a forward and reverse motor 91 fixedly connected to the outer end of the screw rod 93; a conductive slip ring 97 is sleeved on the output shaft of the left reduction motor 51 or the right reduction motor 52, and the conductive slip ring 97 is connected to the forward and reverse motor 91 through electric wires, and the forward and reverse motor 91 is connected to the controller 3.

[0054] During the rotation of the drying roller 53 and the brush strips 54, due to excessive accumulation of grains, the drying roller 53 and the brush strips 54 on one side slip, causing the frame 1 to tilt and deviate as a whole. The controller 3 controls the forward and reverse motors 91 to rotate in the forward and reverse directions. The rotation of the forward and reverse motors 91 drives the screw rods 1 92 and 2 93 to rotate. The screw rods 1 92 and 2 93 make the two nuts 94 approach each other during the rotation. Then, under the restriction of the movable groove 96, the ground-lying rod 95 extends out of the movable groove 96 and contacts the ground (such as Fig.10 As shown), the friction between the turning roller 53 and the ground is increased, so that the turning roller 53 and multiple brush strips 54 on one side no longer slip and can move forward normally to turn the grains.

[0055] After the sun-turning roller 53 and the plurality of brush strips 54 move forward normally, the controller 3 controls the forward and reverse motors 91 to rotate in the reverse direction, so that the lying rods 95 are folded and stored in the storage slots (such as Fig.11 As shown), thereby ensuring the normal operation of the tedder.

Claims

1. An electric remote-controlled self-propelled grain turning machine, comprising a frame, characterized in that: It also includes a tanning mechanism, a controller, a storage battery, a ridging mechanism, a remote control device and a rear wheel steering mechanism arranged on the frame; the tanning mechanism includes a tanning roller, which is installed on the front side of the frame and can be driven to rotate by a driving component, and the outer wall of the tanning roller is surrounded by N detachable brush strips; the ridging mechanism includes a support rod and N groups of parallel ridging units, the support rod is installed on the frame and located at the rear side of the tanning roller, the ridging unit includes a ridging plate, the ridging plate is installed on the bottom of the support rod through a fixing rod, and a brush block is arranged at the bottom of the ridging plate; the rear wheel steering mechanism includes a running wheel and a steering assembly, the running wheel is installed on the rear side of the frame, and the steering assembly is installed on the frame and can drive the steering of the running wheel; a body angular displacement sensor is installed on the frame, and the body angular displacement sensor is connected to the controller; The interior of the turning and drying roller is hollow, and H movable grooves are formed around the outer wall of the turning and drying roller. Screw rod 1 and screw rod 2 are formed in the inner cavity of the turning and drying roller. The opposite ends of screw rod 1 and screw rod 2 are fixedly connected, and the opposite ends of screw rod 1 and screw rod 2 are both provided with bearing 2, and the two bearings 2 are respectively installed on the left and right side walls of the turning and drying roller. Nuts are threadedly connected to screw rod 1 and screw rod 2, and H folding and lying units are formed around the outer wall of the nut. The folding and lying units include two lying rods. The top ends of the two lying rods are hinged together and arranged in the movable grooves, and the bottom ends of the two lying rods are respectively hinged to two nuts. A forward and reverse motor fixedly connected to the outer end of screw rod 2 is installed on the outer side surface of the turning and drying roller; a conductive slip ring is sleeved on the driving component, and the conductive slip ring is connected to the forward and reverse motors through electric wires, and the forward and reverse motors are connected to the controller; The storage battery is electrically connected to the controller, the remote control device is connected to the controller, and the controller is respectively connected to the driving component and the steering assembly.

2. The electric remote-controlled self-propelled grain turning machine according to claim 1, characterized in that: There are two turning rollers, which are symmetrically arranged along the central axis of the frame. The driving component includes a left reduction motor and a right reduction motor, which are both installed on the frame. The output shafts of the left reduction motor and the right reduction motor are respectively fixedly connected to the two turning rollers, and the left reduction motor and the right reduction motor are respectively connected to the controller.

3. The electric remote-controlled self-propelled grain turning machine according to any one of claims 1 to 2, characterized in that: The outer wall of the drying roller is surrounded by a plurality of trapezoidal grooves, and a trapezoidal block is installed at the bottom end of the brush strip. The trapezoidal block is arranged in the trapezoidal groove and can slide axially along the trapezoidal groove.

4. The electric remote-controlled self-propelled grain turning machine according to claim 3 is characterized in that: The outer end of the sun turning roller is provided with a detachable retaining ring, and the retaining ring contacts the outer side surface of the trapezoidal block.

5. The electric remote-controlled self-propelled grain turning machine according to claim 4, characterized in that: The retaining ring is installed on the outer side of the sun turning roller through bolts.

6. The electric remote-controlled self-propelled grain turning machine according to claim 1, characterized in that: The steering assembly includes a steering motor and a mounting seat, the mounting seat is mounted on the frame and located above the traveling wheel, the mounting seat is mounted with a rear wheel shaft through a bearing, the bottom end of the rear wheel shaft is mounted with a traveling wheel, the top end of the rear wheel shaft is sleeved with a driven bevel gear, the steering motor is mounted on the frame, the output shaft thereof is sleeved with a driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear.

7. The electric remote-controlled self-propelled grain turning machine according to any one of claims 1 or 6, characterized in that: The wheel diameter of the traveling wheel is larger than the diameter of the sun turning roller.

8. The electric remote-controlled self-propelled grain turning machine according to claim 1, characterized in that: The ridging plate is provided with an installation groove in which a brush block is arranged. The brush block is installed at the bottom of the fixing rod, and its bottom protrudes from the ridging plate. The bristles of the brush block face downward and contact the ground, and the ridging plate is higher than the ground.

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