Adjustable indent wheel disc seed-metering device

Abstract

The utility model discloses an adjustable indent wheel disc seed-metering device which comprises a transmission shaft and a shell, the shell is fixedly sleeved on the transmission shaft, one side of the shell is provided with a seed-metering opening, a driving disc, an adjusting disc and a plurality of indent gears are arranged in the shell, the driving disc is fixedly connected on the transmission shaft, the indent gears are clamped and supported by the driving disc and the adjusting disc, and the indent gears are clamped and supported by the adjusting disc. A plurality of indent gears are circumferentially and uniformly distributed between the driving disc and the adjusting disc, limiting grooves allowing the indent gears to axially rotate are further formed in the driving disc and the adjusting disc, and four indents which are different in size and used for storing seeds of different sizes are formed in each indent gear; the side, away from the indent gear, of the adjusting disc is further connected with a ratchet wheel and pawl mechanism used for controlling the indent gear to rotate to adjust the size of the indent. By utilizing the characteristics of one-way intermittent movement and fixed-angle rotation of a ratchet wheel in the ratchet wheel and pawl mechanism and the characteristic of stable gear transmission ratio, the replacement of indents with different sizes on the indent gear is realized, so that the seeding of seeds with different sizes is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to seeding machine seed metering technology, concretely relates to an adjustable nest eye wheel disc seed metering device. BACKGROUND

[0002] The seed metering device is a device for orderly sowing seeds of crops that farmers need to plant from a seed box of a seeding machine to a field. The existing nest eye seed metering device is generally a single seed metering device and a composite inner sleeve type multi-class seed metering device, and has the following defects: (1) the single seed metering device has a narrow application range and a low cost performance ratio; and (2) the composite inner sleeve seed metering device can sow seeds of different sizes but has a complicated operation for replacing the inner sleeve. SUMMARY

[0003] The utility model aims at providing an adjustable nest eye wheel disc seed metering device which can integrally sow multiple types of seeds and realize sowing of seeds of different sizes.

[0004] The utility model is realized through the following technical solutions:

[0005] An adjustable nest eye wheel disc seed metering device comprises a transmission shaft and a shell, the shell is fixedly sleeved on the transmission shaft, one side of the shell is provided with a seed metering port, a driving disc, an adjusting disc and a plurality of nest eye gears are arranged in the shell, the driving disc is fixedly connected to the transmission shaft, the driving disc and the adjusting disc clamp and support the nest eye gears, the plurality of nest eye gears are circumferentially and uniformly distributed between the driving disc and the adjusting disc, a limiting groove allowing the nest eye gears to rotate axially is further arranged on the driving disc and the adjusting disc, four nest eyes of different sizes for storing seeds of different sizes are arranged on the nest eye gears, and a ratchet and pawl mechanism for controlling rotation of the nest eye gears to adjust the size of the nest eyes is further connected to one side of the adjusting disc away from the nest eye gears.

[0006] Preferably, the ratchet and pawl mechanism comprises four pawls and a ratchet, the number of gear teeth of the outer gear of the ratchet is greater than the number of gear teeth of the inner ratchet and is a multiple of the number of gear teeth of the inner ratchet, the outer gear of the ratchet is engaged with the nest eye gears, the inner ratchet of the ratchet is a one-way tooth and is engaged with one end of the pawl, and the other end of the pawl is provided with a connecting head and a limiting connecting piece which are movably connected to the adjusting disc.

[0007] Further, a plurality of connecting holes and limiting grooves which are uniformly distributed around the center of the adjusting disc are arranged on the surface of the adjusting disc, the limiting grooves are arc-shaped slots, the connecting head is movably connected to the connecting hole, and the limiting connecting piece comprises a limiting slider and a spring, the limiting slider is movably connected to the limiting groove and is elastically connected to the limiting groove through the spring on one side.

[0008] Further, a connecting rotating shaft is arranged on one side of the ratchet away from the adjusting disc, an adjusting handle is fixedly connected to the transmission shaft and penetrates through the shell.

[0009] Preferably, the side of the driving disc away from the adjusting disc is provided with a connecting shaft, the connecting shaft is provided with an opening, and the driving disc is fixedly connected to the transmission shaft through the opening and a pin.

[0010] Preferably, a brush is axially sleeved on the transmission shaft, and the brush is installed in the driving disc, the adjusting disc and the socket gear.

[0011] Preferably, the driving disc and the adjusting disc are locked and fixed together through four screws and four nuts.

[0012] Preferably, the shell comprises a half shell one and a half shell two, and the half shell one and the half shell two are locked and fixed in combination by screws and nuts.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) the application utilizes the characteristics of one-way intermittent motion, fixed angle rotation and stable gear transmission ratio of the ratchet and pawl mechanism, realizes replacement of different size sockets of the socket gear, and further realizes seeding of different size seeds;

[0015] (2) the device is small and simple in structure, can realize multi-class seeding of one device at low cost, has high cost performance and good market prospect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an assembly structure diagram of the utility model;

[0017] Figure 2 It is a socket arrangement diagram of the socket gear of the utility model;

[0018] Figure 3 It is a ratchet distribution diagram of the utility model;

[0019] Figure 4 It is an adjusting disc structure diagram of the utility model;

[0020] Figure 5 It is a pawl structure diagram of the utility model;

[0021] Figure 6 It is a pawl and socket gear installation diagram of the utility model.

[0022] In the drawing: 1, screw one; 2, socket gear; 3, pin; 4, brush; 5, screw two; 6, half shell one; 7, nut one; 8, driving disc; 9, adjusting disc; 10, spring; 11, connecting shaft; 12, half shell two; 13, nut two; 14, adjusting handle; 15, pawl; 16, transmission shaft. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail in combination with specific embodiments, which are the explanation of the utility model but not the limitation.

[0024] Reference Figure 1 As shown in the figure, the embodiment provides an adjustable eye wheel seed meter, which is installed on a seeding machine. The seed meter comprises a transmission shaft 16, eight eye gear 2 are clamped and supported on the transmission shaft 16 through a driving disc 8, an adjusting disc 9, four screws 1 and four nuts 7, which provides conditions for the rotation of the eye gear 2 around the central axis of the transmission shaft 16, and as shown in the figure Figure 2 The eye gear 2 is provided with four different size eye holes for storing different size seeds. Eight eye gears 2 are uniformly distributed in the circumferential direction between the driving disc 8 and the adjusting disc 9, and the driving disc 8 and the adjusting disc 9 are provided with limiting grooves allowing the axial rotation of the eye gear 2. The side of the driving disc 8 away from the adjusting disc 9 is provided with a connecting shaft, the connecting shaft is provided with an opening, and the opening is connected with the opening pin 3 to fix the driving disc 8 on the transmission shaft 16. The adjusting disc 9 is connected with a ratchet and pawl mechanism, which is used to control the relative motion of the eye gear 2, the driving disc 8 and the adjusting disc 9. The side of the driving disc 8 and the side of the ratchet are respectively provided with half shell 1 and half shell 2 which can be combined and fixed. The half shell 1 and the half shell 2 are combined and fixed by screw 5 and nut 13 to fix the driving disc 8, the adjusting disc 9, the eye gear 2 and the ratchet and pawl mechanism in the shell.

[0025] As shown in the figure Figure 4 And Figure 6 The surface of the adjusting disc 9 is provided with connecting holes and limiting grooves uniformly distributed around the center. The limiting groove is an arc-shaped notch. The ratchet and pawl mechanism comprises four pawls 15 and a ratchet. Referring to Figure 5 The connecting head is provided at one end of the pawl for active connection with the connecting hole on the adjusting disc 9. The pawl is further provided with a limiting connecting piece comprising a limiting slider movably connected in the limiting groove of the adjusting disc 9. The limiting slider is elastically connected with the limiting groove by spring 10 at one side. The other end of the pawl is engaged with the inner ratchet gear of the ratchet to prevent the ratchet from reversing, as shown in the figure Figure 3As shown, the inner ratchet gear of the ratchet wheel is one-way tooth and the number of inner ratchet gear teeth is "24", the number of outer gear teeth is "72", the outer gear of the ratchet wheel is engaged with the hole gear, allowing when the ratchet wheel rotates counterclockwise one inner ratchet tooth, the corresponding outer tooth number rotates three teeth, and then drives the hole gear 2 to rotate 90°, so that the size of the hole on the hole gear 2 corresponding to the driving disc 8 and the adjusting disc 9 is replaced once, and the side of the ratchet wheel away from the adjusting disc 9 is provided with a connecting shaft 11, the connecting shaft 11 is movably connected to the transmission shaft 16 and fixedly connected to the adjusting handle 14, and the connecting shaft 11 penetrates the half shell two 12, and the adjusting handle 14 can be rotated to drive the ratchet wheel to rotate, and then drive the hole gear 2 to move relative to the driving disc 8 and the adjusting disc 9.

[0026] And in order to prevent the card and realize single grain precision seed, a brush 4 is also provided, which is axially installed and fixed in the driving disc 8, the adjusting disc 9 and the hole gear 2, and the lower end of the combined shell is provided with a seed outlet for allowing the seed to fall out, and the upper end opposite to the seed outlet is provided with a adding opening for adding seeds, the adding opening is communicated with the seed box of the seeding machine, and before starting seeding, the seeds are dropped into the hole through the adding opening, and then the seeds are transported from the upper to the lower by the rotation of the wheel, when the size of the hole on the hole gear 2 is communicated with the seed outlet, the seeds are dropped out of the hole under the action of gravity.

[0027] The seed metering device utilizes the intermittent motion of the ratchet wheel, the fixed angle rotation characteristics and the relatively stable characteristics of the gear transmission, realizes the adjustment of the hole size, and has the reverse self-locking feature, when in use, the seed metering device is installed on the seeding machine, when not working, the ratchet wheel is rotated by rotating the adjusting handle 14 counterclockwise to control the relative motion of the hole gear 2, the driving disc 8 and the adjusting disc 9, when the ratchet wheel rotates one inner ratchet tooth each time, the corresponding outer tooth number rotates three teeth, and then drives the hole gear to rotate 90°, so that the size of the hole on the hole gear 2 corresponding to the driving disc 8 and the adjusting disc 9 is replaced once, and the size of the hole is cyclically replaced with the rotation of the adjusting handle 14, and when the required hole size is adjusted, the adjusting handle 14 is stopped, the power of the seed metering device is turned on to start the motor to drive the transmission shaft 16 to rotate, and then drive the seed metering device to rotate along the transmission shaft 16, the seeds above are transported to the lower, the seeds in the hole are dropped out of the seed outlet under the action of gravity, the seed metering device realizes the seed metering action, and the seeds are accurately and singlely discharged.

[0028] The above is a further detailed description of the present application in combination with specific embodiments, which cannot be regarded as the specific implementation of the present application limited to these embodiments, and for ordinary skilled persons in the technical field of the present application, without departing from the concept of the present application, a number of simple deductions or replacements can be made, which should be regarded as belonging to the protection scope of the present application.

Claims

1. An adjustable seed metering disc, characterized in that, The device includes a drive shaft (16) and a housing. The housing is fixedly sleeved on the drive shaft (16) and has a seed discharge port on one side. Inside the housing are a drive disc (8), an adjustment disc (9), and several seed-hole gears (2). The drive disc (8) is fixedly connected to the drive shaft (16), and the drive disc (8) and the adjustment disc (9) clamp and support the seed-hole gears (2). Several seed-hole gears (2) are evenly distributed circumferentially between the drive disc (8) and the adjustment disc (9). The drive disc (8) and the adjustment disc (9) are also provided with limiting grooves that allow the seed-hole gears (2) to rotate axially. The seed-hole gears (2) are provided with four seed holes of different sizes for storing seeds of different sizes. The side of the adjustment disc (9) away from the seed-hole gears (2) is also connected to a ratchet and pawl mechanism for controlling the rotation of the seed-hole gears (2) to adjust the size of the seed holes.

2. The adjustable seed metering device with seed retrieval mechanism according to claim 1, characterized in that, The ratchet and pawl mechanism includes four pawls (15) and a ratchet. The number of teeth on the outer gear of the ratchet is greater than the number of teeth on the inner ratchet and is a multiple of the number of teeth on the inner ratchet. The outer gear of the ratchet meshes with the eyelet gear (2). The inner ratchet of the ratchet has one-way teeth and engages with one end of the pawl. The other end of the pawl is provided with a connector and a limiting connector, which are movably connected to the adjusting plate (9).

3. The adjustable seed metering device with a seed tray according to claim 2, characterized in that, The surface of the adjustment plate (9) is provided with connecting holes and limiting grooves evenly distributed around the center of the adjustment plate (9). The limiting groove is an arc-shaped groove. The connector is movably connected to the connecting hole. The limiting connector includes a limiting slider and a spring (10). The limiting slider is movably connected in the limiting groove and one side is elastically connected to the limiting groove through the spring (10).

4. An adjustable seed metering device with a seed tray according to claim 2, characterized in that, A connecting shaft (11) is provided on the side of the ratchet away from the adjusting disc (9), and an adjusting handle (14) is fixedly connected to the connecting shaft (11) on the transmission shaft (16) and through the housing.

5. An adjustable seed metering device with a seed tray according to claim 1, characterized in that, The active disc (8) is provided with a connecting shaft on the side away from the adjusting disc (9). The connecting shaft has an opening, and the active disc (8) is fixedly connected to the transmission shaft (16) by connecting the opening with a cotter pin (3).

6. The adjustable seed metering device with seed retrieval mechanism according to claim 1, characterized in that, A brush (4) is axially sleeved on the drive shaft (16), and the brush (4) is installed inside the drive disc (8), the adjustment disc (9) and the socket gear (2).

7. An adjustable seed metering device with a seed tray according to claim 1, characterized in that, The active disc (8) and the adjusting disc (9) are locked together by four screws (1) and four nuts (7).

8. An adjustable seed metering device with a seed tray according to claim 1, characterized in that, The housing includes a first half-shell (6) and a second half-shell (12), and the first half-shell (6) and the second half-shell (12) are fixed by a locking combination of a second screw (5) and a second nut (13).

Images