CN106612661A - Hydraulically-controlled vibrating type suppressing roller - Google Patents

Abstract

The invention discloses a hydraulically controlled vibrating pressure roller, which aims to solve the disadvantages of unstable pressure on the ridge table, single function and uneven suppression of the pressure roller during the working process. It consists of a fixed roller, a moving roller , a vibration generator, a bracket, a hydraulic pump, a hydraulic cylinder and a three-position four-way reversing valve. The vibration generator makes the pressure of the pressure roller on the soil more uniform, thereby making the density of the soil layer on the surface of the ridge more uniform. Using hydraulic pressure to control the initial pressure of the pressing roller on the ridge can be more stable, and a higher quality of pressing can be obtained, which can also ensure a good growth environment for crops. There are raised stripes on the outer surface of the moving roller, which can break up the soil clods more easily and suppress the soil more evenly.

Description

A hydraulically controlled vibrating pressure roller

technical field

The invention belongs to a hydraulically controlled vibrating pressure roller in the field of agricultural seeding in arid environment.

Background technique

The pressure roller plays an important role in the sowing process of crops. After the crops are sown, the soil is compacted and compacted, which can increase the density of the soil above the crop seeds, which is conducive to the retention of water in the soil and can make the crops better. Germination and emergence. Before there was no pressure roller on the planter, people needed to rely on their own body weight to step on it with their feet to keep the moisture in the soil, which may have an impact on the germination rate of crops due to the uneven force of people. At present, the pressing roller on the seeder is composed of a roller frame and several rollers installed on the roller frame, and the axis direction of the roller is perpendicular to the advancing direction of the traction machine. When working, the pressure roller passes the sown ridge under the drive of the traction machine, and suppresses the ridge formed during the sowing process under the joint action of the pressure roller's own gravity and external force. This suppression method may exist in the suppression process because the pressure of the suppression roller on the surface of the ridge may change at any time. This suppression method will affect the suppression effect to a certain extent, and will increase the evaporation of water on the ridge, which is harmful to the seeds. The germination rate and the growth and development of crops in the later stage will have a great impact.

Contents of the invention

The purpose of the present invention is to overcome the pressure roller that is generally used now can not guarantee the stability of the pressure on the surface of the ridge table during the suppression process, the pressure of the pressure roller on the surface of the ridge table is unstable during the suppression process, and the pressure of the pressure roller on the soil surface will be unstable. A wide range of changes occurs, resulting in problems such as uneven soil density after suppression and insufficient suppression pressure during the suppression process. A hydraulically controlled vibrating pressure roller is designed. Under the vibration of the vibration generator, it can increase The pressure of the pressing roller on the soil makes the density of the soil more uniform after pressing, so as to reduce the loss of water in the soil. The striped protrusions on the surface of the moving roller can reduce the slipping phenomenon during the pressing process, and can also reduce the work wear of the moving roller during the process, prolonging the service life

The invention includes a fixed roller, an electromagnetic vibration generator, a bracket, a moving roller, a bearing, a hydraulic cylinder, a three-position four-way reversing valve, a hydraulic pump, a connecting bracket, a connecting shaft and a pipeline, and the fixed roller is placed on the moving roller Inside, the fixed roller and the moving roller are connected by bearings. The hydraulic cylinder, three-position four-way reversing valve, hydraulic pump, connecting shaft and pipeline constitute a hydraulic control system. The hydraulic pump is connected to the three-position four-way reversing valve through the pipeline, and the hydraulic cylinder is controlled by the three-position four-way reversing valve. The inner piston rises and falls or stands still. When the three-position four-way reversing valve is in position ①, the connecting shaft will move downward, and the pressure of the pressure roller on the ground will increase. When the three-position four-way reversing valve When it is at the position ③, the connecting shaft will move upwards, and the pressure of the pressure roller on the ground will decrease. The pressure of the rollers on the ground will also remain unchanged, which is beneficial to the pressing process of the pressing rollers to keep the pressure on the surface of the ridge table stable and improve the quality of work.

Two electromagnetic vibration generators are symmetrically fixed on the inner lower side of the fixed roller through the center line, and the electromagnetic vibration generator is fixed in the fixed roller through a bracket, and the electromagnetic vibration generator vibrates alternately; the two exposed ends of the fixed roller are There are connecting brackets installed and fixed, and both connecting brackets are connected with the hydraulic cylinder. The hydraulic pump communicates with the hydraulic cylinder through the three-position four-way reversing valve, and the hydraulic pump transmits the hydraulic fluid to the hydraulic cylinder through the hydraulic pipeline. The one-way reversing valve can realize the rise, fall or stop of the connecting bracket, and then control the pressure of the moving roller on the surface of the ridge table. When the three-position four-way reversing valve is placed in the middle position, it is the pressure-holding state, that is, the pressure of the pressure roller on the surface of the ridge table remains stable, and the uniform suppression of the surface of the ridge table can be realized.

The surface of the moving roller has two anti-slip stripes, which can increase the wear resistance and toughness of the moving roller and prolong the service life. Each anti-skid stripe has two stripe protrusions distributed on the circumferential surface of the moving roller, and the distance between adjacent stripe protrusions is L, where the value range of L is 100mm to 120mm, and the contour curve of the stripe protrusions is the parametric equation of the cardioid, A part of , where: the value range of θ is 0≤θ≤π, X is the axial direction of the moving roller, where 16mm≤X≤20mm, Y is the height of the stripe protrusions in the normal direction on the surface of the moving roller, where 3mm≤Y≤12mm.

The vibration frequency of the electromagnetic vibration generator is n ₁ , where 50Hz≤n ₁ ≤100Hz; the vibration power of the electromagnetic vibration generator is p ₁ , where 100w≤p ₁ ≤150w.

The inner diameter of the fixed roller is r ₁ , 30mm≤r ₁ ≤60mm, the outer diameter is R ₁ , 35mm≤R ₁ ≤70mm, R ₁ ≥r ₁ +3mm; the inner diameter of the moving roller is r ₂ , 50mm≤r ₂ ≤155mm, r ₂ ≥R ₁ +15mm, outer diameter is R ₂ , 55mm≤R ₂ ≤160mm, R ₂ ≥r ₂ +3mm;

The support is a tetrahedral structure, and its four planes are composed of three base planes XOY, XOZ, and YOZ in the space coordinate system and an inclined plane intersecting the three planes, and the included angle between the inclined plane and the XOY plane is The angle between the slope and the XOZ and YOZ planes is in

When the electromagnetic vibration generator vibrates alternately, the fixed roller can also vibrate, and the moving roller can also vibrate to realize the suppression on the ridge, the suppression force is relatively uniform, and the soil density is also relatively uniform, which can effectively reduce the loss of water. .

In order to solve the problems of insufficient pressure on the soil and uneven pressure on ridges by most pressing rollers, the present invention adopts an electromagnetic vibration generator to generate uniform pressing force, so as to realize uniform pressing on the soil and make the density of the soil surface Uniformity, reducing water loss, is conducive to the growth and development of crops in arid environments. The present invention uses a hydraulic control system to control the pressure of the pressure roller on the ridge table on the connection shaft of the pressure roller that is more widely used at present, so that the pressure of the pressure roller to the ridge The pressure on the table surface is more stable and the operation effect is better, which is extremely important for the growth of crops in arid environment, and the surface of the moving roller has stripes and protrusions, which can reduce slipping and wear.

Compared with the prior art, the present invention has beneficial effects as follows:

Aiming at the problem that the pressure of the pressure roller varies widely and the pressure on the soil is uneven during the working process of the pressure roller, the invention designs a pressure roller equipped with an electromagnetic vibration generating device and a hydraulic pressure control pressure stability. The electromagnetic vibration generator can make the pressure of the pressure roller on the soil more uniform during the working process, and then the density of the soil layer will be more uniform, which is very beneficial for water retention in relatively dry areas, and it is also conducive to the growth and development of crops . This design uses the load circuit of the hydraulic pump to keep the pressure, which can ensure that the pressure on the ridge does not change greatly during the working process of the pressure roller. Compared with the common pressure roller that is widely used at present, it can obtain relatively high pressure. The quality can reduce the loss of water well, which is very important for the growth of crops in arid environment, and the surface of the moving roller has stripes and protrusions, which can prevent slipping during the suppression work, and have a higher work efficiency. quality.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the hydraulic control system of the present invention.

Fig. 3 is a schematic diagram of the structure of the moving roller of the present invention.

detailed description

Please refer to Fig. 1, Fig. 2 and Fig. 3, the present invention includes a fixed roller 1, an electromagnetic vibration generator 2, a bracket 3, a moving roller 4, a bearing 5, a hydraulic cylinder 6, and a three-position four-way reversing valve 7 , a hydraulic pump 8, a connecting bracket 9, a connecting shaft 10 and a pipeline 11, the fixed roller 1 is placed inside the moving roller 4, and the fixed roller 1 and the moving roller 4 are connected by a bearing 5. Hydraulic cylinder 6, three-position four-way reversing valve 7, hydraulic pump 8, connecting shaft 10 and pipeline 11 constitute a hydraulic control system, hydraulic pump 8 is connected with three-position four-way reversing valve 7 through pipeline 11, The four-way reversing valve 7 controls the rise and fall of the piston in the hydraulic cylinder 6 or remains still. When the three-position four-way reversing valve 7 is in position ①, the connecting shaft 10 will move downward, and the pressure of the pressure roller against the ground will will increase, when the three-position four-way reversing valve 7 is at position ③, the connecting shaft 10 will move upwards, and the pressure of the pressure roller on the ground will decrease. When the three-position four-way reversing valve 7 is at position ②, this When it is a pressure-holding state, the connecting shaft 10 will remain stationary, and the pressure of the pressing rollers to the ground will also remain constant, which helps the pressing process of the pressing rollers to keep the pressure on the surface of the ridge table stable and improve the quality of work.

Two electromagnetic vibration generators 2 are symmetrically fixed on the inner lower side of the fixed roller 1 through the center line, and the electromagnetic vibration generator 2 is fixed in the fixed roller 1 through the bracket 3, and the electromagnetic vibration generator 2 vibrates alternately; the fixed roller The two exposed ends of 1 are fixed with connecting brackets 9, and the two connecting brackets 9 are connected to the hydraulic cylinder 6. The hydraulic pump 8 communicates with the hydraulic cylinder 6 through the three-position four-way reversing valve 7, and the hydraulic pump 8 passes through the hydraulic pressure. The pipeline transports the hydraulic fluid to the hydraulic cylinder 6. By controlling the three-position four-way reversing valve 7, the rise, fall or rest of the connecting bracket 9 can be realized, thereby controlling the pressure of the driving roller 4 on the surface of the ridge. When the three-position four-way reversing valve 7 is placed in the middle position, it is a pressure-holding state at this time, that is, the pressure of the pressing roller on the surface of the ridge table remains stable, and the uniform suppression of the surface of the ridge table can be realized.

The surface of the moving roller 4 has two anti-skid stripes 12, the anti-skid stripes 12 can increase the wear resistance and toughness of the moving roller 1 and prolong the service life. Each anti-skid stripe 12 has two stripe protrusions distributed on the circumferential surface of the moving roller 4, and the distance between adjacent stripe protrusions is L, wherein the value range of L is 100mm-120mm, and the The contour curve is the parametric equation of the cardioid, A part of , where: the value range of θ is 0≤θ≤π, X is the axial direction of the moving roller, where 16mm≤X≤20mm, Y is the height of the stripe protrusions in the normal direction on the surface of the moving roller, where 3mm≤Y≤12mm.

The vibration frequency of the electromagnetic vibration generator 2 is n ₁ , where 50Hz≤n ₁ ≤100Hz; the vibration power of the electromagnetic vibration generator 2 is p ₁ , where 100w≤p ₁ ≤150w.

The inner diameter of the fixed roller 1 is r ₁ , 30mm≤r ₁ ≤60mm, the outer diameter is R ₁ , 35mm≤R ₁ ≤70mm, R ₁ ≥r ₁ +3mm; the inner diameter of the moving roller 4 is r ₂ , 50mm≤ r ₂ ≤155mm, r ₂ ≥R ₁ +15mm, the outer diameter is R ₂ , 55mm≤R ₂ ≤160mm, R ₂ ≥r ₂ +3mm;

The support 3 is a tetrahedral structure, and its four planes are respectively composed of three base planes XOY, XOZ, and YOZ in the space coordinate system and an inclined plane intersecting the three planes, and the included angle between the inclined plane and the XOY plane is The angle between the slope and the XOZ and YOZ planes is in

When the electromagnetic vibration generator 2 alternately vibrates, the fixed roller 1 can also vibrate, and the moving roller 4 can also vibrate, so as to realize the suppression on the ridge, the suppression force is relatively uniform, and the density of the soil is also relatively uniform, which can effectively reduce the loss of moisture.

Claims (7)

1. A hydraulically controlled vibrating pressure roller, characterized in that it comprises a fixed roller (1), an electromagnetic vibration generator (2), a support (3), a moving roller (4), a bearing (5), a hydraulic Cylinder (6), three-position four-way reversing valve (7), hydraulic pump (8), connecting bracket (9), connecting shaft 10 and pipeline 11, the fixed roller (1) is placed inside the moving roller (4) , the fixed roller (1) and the moving roller (4) are connected through bearings (5); hydraulic cylinder (6), three-position four-way reversing valve (7), hydraulic pump (8), connecting shaft (10 ) and the pipeline (11) constitute a hydraulic control system, the hydraulic pump (8) is connected to the three-position four-way reversing valve (7) through the pipeline (11), and the hydraulic cylinder is controlled by the three-position four-way reversing valve (7) (6) The rise and fall of the inner piston or stand still; two electromagnetic vibration generators (2) are symmetrically fixed on the inner lower side of the fixed roller (1) through the center line, and the electromagnetic vibration generator (2) passes through the bracket (3) fixed in the fixed roller (1), the electromagnetic vibration generator (2) vibrates alternately; the two exposed ends of the fixed roller (1) are fixed with connecting brackets (9), and the two connecting brackets (9) are connected with the hydraulic cylinder (6), the hydraulic pump (8) communicates with the hydraulic cylinder (6) through the three-position four-way reversing valve (7), and the hydraulic pump (8) delivers the hydraulic fluid to the hydraulic pressure through the hydraulic pipeline. Cylinder (6), by controlling the three-position four-way reversing valve (7), the rise, fall or standstill of the connecting bracket (9) can be realized, and then the pressure of the driving roller (4) on the surface of the ridge can be controlled. When the three-position four-way reversing valve (7) is placed in the middle position, it is in a pressure maintaining state at this moment. 2. A hydraulically controlled vibrating pressure roller according to claim 1, characterized in that: the surface of the moving roller (4) has two anti-slip stripes (12). 3. A hydraulically controlled vibrating pressure roller according to claim 2, characterized in that: each of the anti-skid stripes (12) has two stripes raised on the peripheral surface of the moving roller (4) , and the distance between adjacent striped protrusions is L, where the value of L ranges from 100mm to 120mm, and the contour curve of the striped raised part is the parametric equation of the heart-shaped line. A part of , where: the value range of θ is 0≤θ≤π, X is the axial direction of the moving roller, where 16mm≤X≤20mm, Y is the height of the stripe protrusions in the normal direction on the surface of the moving roller, where 3mm≤Y≤12mm. 4. A hydraulically controlled vibrating pressure roller according to claim 1, characterized in that: the vibration frequency of the electromagnetic vibration generator (2) is n ₁ , where 50Hz≤n _1≤100Hz ; the electromagnetic vibration occurs The vibration power of the device (2) is p ₁ , where 100w≤p _1≤150w . 5. A hydraulically controlled vibrating pressure roller according to claim 1, characterized in that: the inner diameter of the fixed roller (1) is r ₁ , 30mm≤r ₁ ≤60mm, and the outer diameter is R ₁ , 35mm ≤R ₁ ≤70mm, R ₁ ≥r ₁ +3mm; the inner diameter of the moving roller (4) is r ₂ , 50mm≤r ₂ ≤155mm, r ₂ ≥R ₁ +15mm, the outer diameter is R ₂ , 55mm≤R ₂ ≤160mm, R ₂ ≥r ₂ +3mm. 6. A hydraulically controlled vibrating pressure roller according to claim 1, characterized in that: the support (3) is a tetrahedral structure, and its four planes are respectively XOY, XOZ, YOZ in the spatial coordinate system It is composed of three base surfaces and a slope intersecting with the three surfaces, and the angle between the slope and the XOY plane is The angle between the slope and the XOZ and YOZ planes is in . 7. A hydraulically controlled vibrating pressure roller according to claim 1, characterized in that: when the three-position four-way reversing valve (7) is located at position ①, the connecting shaft (10) will move downwards to suppress The pressure of the roller against the ground will increase. When the three-position four-way reversing valve (7) is in position ③, the connecting shaft (10) will move upwards, and the pressure of the pressing roller against the ground will decrease. When the direction valve (7) is at the position ②, it is in the pressure maintaining state at this time, the connecting shaft (10) will remain stationary, and the pressure of the pressure roller on the ground will also remain unchanged, which is beneficial to the pressure roller to keep the ridges aligned during the suppression process. The pressure on the table surface is stable, improving the quality of work.