Sieve plate device of small harvester

Abstract

A sieve plate device of a small harvester comprises a main supporting frame, a screening rod, a positioning U-shaped plate, a traction block, a screening rod positioning block, a driving connecting rod, a screw connecting column, a U-shaped plate mounting screw and a magnet, an inner supporting frame and outer supporting frames are arranged at the bottom of the main supporting frame, an inner supporting frame array group is located in the middle, and the outer supporting frames are distributed on the two sides of the inner supporting frame array group. A positioning block connecting groove is formed in the outer supporting frame, a screening rod positioning block is matched with the positioning block connecting groove, the screening rod positioning block is connected with the positioning block connecting groove, the screening rod positioning block slides in the positioning block connecting groove, an upper connecting rod mounting groove is formed in the top of the screening rod positioning block, and a driving connecting rod is arranged on one side of the screening rod positioning block. An upper connecting rod mounting column is arranged on one side of the driving connecting rod and rotationally connected with the upper connecting rod mounting groove.

Description

Technical Field

[0001] The utility model relates to the field of harvesters, in particular to a small-sized harvester sieve plate device. Background Art

[0002] An existing patent (publication number: CN104126377B) proposes a small harvester screen plate device, including frames on both sides, characterized in that: spaced arc-shaped fixing plates are fixedly connected between the frames on both sides, each arc-shaped fixing plate matches the roller on the harvester, and the plate surfaces of each arc-shaped fixing plate are parallel to each other and perpendicular to the axis of the rotating shaft of the roller. Each arc-shaped fixing plate is passed through by spaced square steel bars, and at least one round steel bar is provided between the two adjacent square steel bars. However, in this device, "the round steel bars and the square steel bars are passed through the arc-shaped fixing plates, and the connection with the arc-shaped fixing plates is welding." The round steel bars fixed by welding are difficult to disassemble, and the round steel bars are smaller in diameter and more susceptible to wear. If some round steel bars need to be replaced, the entire screen plate needs to be disassembled and replaced, which increases maintenance costs. Summary of the Invention

[0003] In response to the above-mentioned deficiencies in the prior art, the utility model provides a small harvester screen plate device that, when performing maintenance operations on the harvester screen plate, removes the U-shaped plate mounting screws and then takes off the positioning U-shaped plate, rotates the screw drive cap to lift the traction block, and simultaneously lifts the screening rod positioning block until one side of the screening rod avoidance groove coincides with the side of the outer screen rod connecting groove. The screening rods at various positions can be taken out separately, and the taking-out method is convenient, does not require a large amount of additional operating space, facilitates the separate maintenance of the screening rods at various positions, and reduces maintenance costs.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A small harvester screen plate device includes a main support frame, a screening rod, a positioning U-shaped plate, a traction block, a screening rod positioning block, a driving connecting rod, a screw connecting column, a U-shaped plate mounting screw, and a magnet. The bottom of the main support frame is provided with an inner support frame and an outer support frame, the inner support frame array group is in the center position, the outer support frames are distributed on both sides of the inner support frame array group, the outer support frame has a positioning block connecting groove inside, the screening rod positioning block is adapted to the positioning block connecting groove, the screening rod positioning block is connected to the positioning block connecting groove, the screening rod positioning block slides inside the positioning block connecting groove, and the screening rod positioning block The top is provided with an upper connecting rod mounting groove, one side of the screening rod positioning block is provided with a driving connecting rod, one side of the driving connecting rod is provided with an upper connecting rod mounting column, the upper connecting rod mounting column is rotatably connected to the upper connecting rod mounting groove, the other side of the driving connecting rod is provided with a lower connecting rod mounting groove, one side of the driving connecting rod is provided with a traction block, one side of the traction block is provided with a lower connecting rod mounting column, the lower connecting rod mounting groove is rotatably connected to the lower connecting rod mounting column, the middle part of the traction block is provided with a screw mounting groove, the surface of the main support frame is provided with a screw connecting groove, the position of the screw connecting groove corresponds to the position of the screw mounting groove, and the screw connecting column is rotatably connected to the screw connecting groove.

[0006] The bottom of the screw connecting column is provided with a screw driving cap, the top of the screw connecting column is provided with a driving screw, the driving screw is threadedly connected to the screw mounting groove, the top of the driving screw is provided with an upper limit block, the bottom of the traction block is provided with a traction block connecting column, one side of the main support frame is provided with a traction block connecting groove, the traction block connecting groove is adapted to the traction block connecting column, the traction block connecting groove is connected to the traction block connecting column, and the traction block connecting column slides inside the traction block connecting groove. The bottom of the outer support frame is provided with an outer screen rod connecting groove, and multiple groups of outer sieve rod connecting grooves are evenly arranged around the outer support frame. The bottom of the inner support frame is provided with an inner sieve rod connecting groove, and multiple groups of inner sieve rod connecting grooves are evenly arranged around the inner support frame. The position of the outer sieve rod connecting groove corresponds to the position of the inner sieve rod connecting groove, the screening rod is adapted to the outer sieve rod connecting groove and the inner sieve rod connecting groove, and the screening rod is sequentially connected to the inner sieve rod connecting groove and the outer sieve rod connecting groove from the middle to both sides.

[0007] The screening rod is inserted into the outer screen rod connecting groove and the inner screen rod connecting groove, and screening rod positioning plates are provided on both sides of the screening rod, and the screening rod positioning plates are pressed against the side of the outer support frame. The bottom of the screening rod positioning block is provided with a screening rod placement groove, and multiple groups of screening rod placement grooves are evenly arranged around the screening rod positioning block. The position of the screening rod placement groove corresponds to the position of the outer screen rod connecting groove, and a screening rod avoidance groove is provided on one side of the screening rod placement groove, and a screening rod positioning groove is provided on the other side of the screening rod placement groove. The bottom opening of the screening rod placement groove is the same as the diameter of the screening rod, the screening rod positioning groove is adapted to the screening rod, and the screening rod positioning groove is connected to the screening rod.

[0008] Beneficial effects: 1. When the utility model is used to maintain the harvester screen plate, the positioning U-shaped plate is removed after the U-shaped plate mounting screws are disassembled, and the screw drive cap is turned to lift the traction block, so that the screening rod positioning block is lifted synchronously until one side of the screening rod avoidance groove coincides with the side of the outer screen rod connecting groove. This allows the screening rods at various positions to be taken out separately, and the removal method is convenient, does not require a large amount of additional operating space, and is convenient for separate maintenance of the screening rods at various positions, thereby reducing maintenance costs.

[0009] 2. The magnet of the utility model is inserted into the magnet mounting groove and fixed. The magnet can provide a basic fixation for the screening rod when the screening rod is installed, so that during the installation or removal of the screening rod, even if the screening rod loses the fixation of the screening rod positioning groove and the positioning U-shaped plate, it will not fall directly, further increasing the convenience of the maintenance process.

[0010] 3. The utility model provides an upper limit block on the top of the driving screw, so that the upper limit block limits the traction block, so that when the traction block runs to contact with the upper limit block, the side of the screening rod avoidance groove coincides with one side of the outer screen rod connecting groove, which facilitates the insertion of the screening rod and avoids the screening rod positioning block from obstructing the insertion of the screening rod due to the screening rod positioning block running too far, thereby increasing the convenience when installing the screening rod.

[0011] 4. The bottom of the screening rod positioning groove of the utility model is provided with a circular arc chamfer, so that when the screening rod positioning groove is pressed against the side of the screening rod, even if the screening rod positioning groove and the screening rod are not completely aligned, the circular arc chamfer can guide the screening rod to move to the correct position, completing the matching of the screening rod positioning groove and the screening rod. At the same time, the surface of the screening rod will not be scratched during the guiding process, thereby ensuring the safety of the screening rod installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic structural diagram of a small harvester sieve plate device.

[0013] Figure 2 This is a partially enlarged view of a small harvester sieve plate device described in the utility model.

[0014] Figure 3 This is a partial front view of a small harvester sieve plate device described in the utility model.

[0015] Figure 4 This is a partial front cross-sectional view of a small harvester sieve plate device described in the utility model.

[0016] Figure 5 This is a structural schematic diagram of the main support frame described in the present utility model.

[0017] Figure 6 This is a structural schematic diagram of the screening rod positioning block described in the present utility model.

[0018] Figure 7 This is a schematic structural diagram of the traction block described in the utility model.

[0019] Figure 8 This is a schematic diagram of the positioning U-shaped plate structure described in the present utility model. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments:

[0021] Example 1:

[0022] A small harvester screen plate device includes a main support frame 1, a screening rod 5, a positioning U-shaped plate 8, a traction block 9, a screening rod positioning block 10, a drive connecting rod 12, a screw connecting column 22, a U-shaped plate mounting screw 28, and a magnet 32. The bottom of the main support frame 1 has an inner support frame 2 and an outer support frame 3. The inner support frame 2 array group is in the center position, and the outer support frame 3 is distributed on both sides of the inner support frame 2 array group. The outer support frame 3 has a positioning block connecting groove 24 inside. The screening rod positioning block 10 is adapted to the positioning block connecting groove 24. The screening rod positioning block 10 is connected to the positioning block connecting groove 24. The screening rod positioning block 10 slides inside the positioning block connecting groove 24. The top of the screening rod positioning block 10 It has an upper connecting rod mounting groove 11, a driving connecting rod 12 is provided on one side of the screening rod positioning block 10, an upper connecting rod mounting column 13 is provided on one side of the driving connecting rod 12, the upper connecting rod mounting column 13 is rotatably connected to the upper connecting rod mounting groove 11, and a lower connecting rod mounting groove 14 is provided on the other side of the driving connecting rod 12, a traction block 9 is provided on one side of the driving connecting rod 12, a lower connecting rod mounting column 15 is provided on one side of the traction block 9, the lower connecting rod mounting groove 14 is rotatably connected to the lower connecting rod mounting column 15, a screw mounting groove 16 is provided in the middle of the traction block 9, a screw connecting groove 23 is provided on the surface of the main support frame 1, the position of the screw connecting groove 23 corresponds to the position of the screw mounting groove 16, and the screw connecting column 22 is rotatably connected to the screw connecting groove 23.

[0023] Example 2:

[0024] The bottom of the screw connecting column 22 of the present invention is provided with a screw driving cap 19, the top of the screw connecting column 22 is provided with a driving screw 17, the driving screw 17 is threadedly connected to the screw mounting groove 16, the top of the driving screw 17 is provided with an upper limit block 18, and the top of the driving screw 17 is provided with an upper limit block 18, so that the upper limit block 18 limits the traction block 9, so that when the traction block 9 runs to contact with the upper limit block 18, the side of the screening rod avoidance groove 27 coincides with one side of the outer screen rod connecting groove 4, which is convenient for putting in the screening rod 5, avoiding the screening rod positioning block 10 from running too far, causing the screening rod positioning block 10 to hinder the putting in of the screening rod 5, and increasing the convenience when installing the screening rod 5. The bottom of the traction block 9 has a traction block connecting column 21 , the main support frame 1 has a traction block connecting groove 20 on one side, the traction block connecting groove 20 is adapted to the traction block connecting column 21, the traction block connecting groove 20 is connected to the traction block connecting column 21, and the traction block connecting column 21 slides inside the traction block connecting groove 20, and the bottom of the outer support frame 3 has an outer sieve rod connecting groove 4, and multiple groups of outer sieve rod connecting grooves 4 are evenly arranged around the outer support frame 3, and the bottom of the inner support frame 2 has an inner sieve rod connecting groove 7, and multiple groups of inner sieve rod connecting grooves 7 are evenly arranged around the inner support frame 2, and the position of the outer sieve rod connecting groove 4 corresponds to the position of the inner sieve rod connecting groove 7, the screening rod 5 is adapted to the outer sieve rod connecting groove 4 and the inner sieve rod connecting groove 7, and the screening rod 5 is connected to the inner sieve rod connecting groove 7 and the outer sieve rod connecting groove 4 in sequence from the middle to both sides.

[0025] Example 3:

[0026] The screening rod 5 of the utility model is inserted into the outer screen rod connecting groove 4 and the inner screen rod connecting groove 7. The screening rod 5 has screening rod positioning plates 6 on both sides. The screening rod positioning plates 6 are pressed against the side of the outer support frame 3. The bottom of the screening rod positioning block 10 has a screening rod placement groove 26. Multiple groups of screening rod placement grooves 26 are evenly arranged around the screening rod positioning block 10. The position of the screening rod placement groove 26 corresponds to the position of the outer screen rod connecting groove 4. One side of the screening rod placement groove 26 has a screening rod avoidance groove 27, and the other side of the screening rod placement groove 26 has a screening rod positioning groove 25. The screening rod The bottom of the positioning groove 25 is provided with an arc chamfer, so that when the screening rod positioning groove 25 is pressed against the side of the screening rod 5, even if the screening rod positioning groove 25 and the screening rod 5 are not completely aligned, the arc chamfer can guide the screening rod 5 to move to the correct position, completing the cooperation between the screening rod positioning groove 25 and the screening rod 5. At the same time, the surface of the screening rod 5 will not be scratched during the guiding process, ensuring the safety of the installation process of the screening rod 5. The bottom opening of the screening rod placement groove 26 is the same diameter as the screening rod 5, the screening rod positioning groove 25 is adapted to the screening rod 5, and the screening rod positioning groove 25 is connected to the screening rod 5.

[0027] Example 4:

[0028] The screening rod positioning groove 25 described in the present invention is sleeved on the outside of the screening rod 5, and the top of the inner screen rod connecting groove 7 is provided with a magnet mounting groove 31, the magnet 32 ​​is adapted to the magnet mounting groove 31, the magnet 32 ​​is connected to the magnet mounting groove 31, the magnet 32 ​​is inserted into the magnet mounting groove 31, and the magnet 32 ​​is inserted into the magnet mounting groove 31 and fixed. The magnet 32 ​​can provide a basic fixation for the screening rod 5 when the screening rod 5 is installed, so that during the installation or removal of the screening rod 5, even if the screening rod 5 loses the fixation of the screening rod positioning groove 25 and the positioning U-shaped plate 8, it will not fall directly, further increasing the convenience of the maintenance process. The magnet 32 ​​is attracted to the screening rod 5, and a positioning U-shaped plate 8 is provided at the bottom of the main support frame 1. The positioning U-shaped plate 8 is pressed tightly against the lower part of the screening rod 5 array group. There are U-shaped plate mounting platforms 33 on both sides of the positioning U-shaped plate 8, and a screw avoidance groove 29 is provided in the middle of the U-shaped plate mounting platform 33.

[0029] Example 5:

[0030] The bottom of the main support frame 1 described in the present invention has a screw mounting groove 30, and the position of the screw mounting groove 30 corresponds to the position of the screw avoidance groove 29. The U-shaped plate mounting screw 28 passes through the screw avoidance groove 29 and is threadedly connected to the screw mounting groove 30. When performing maintenance work on the harvester screen plate, the U-shaped plate mounting screw 28 is removed and the positioning U-shaped plate 8 is removed. The screw drive cap 19 is rotated to lift the traction block 9, and the screening rod positioning block 10 is lifted synchronously until one side of the screening rod avoidance groove 27 coincides with the side of the outer screen rod connecting groove 4. This allows the screening rod 5 at each position to be taken out separately. The removal method is convenient and does not require a large amount of additional operating space. It is convenient to perform separate maintenance on the screening rod 5 at each position, reducing maintenance costs. The nut of the U-shaped plate mounting screw 28 is pressed tightly on the lower part of the U-shaped plate mounting platform 33.

[0031] Example 6:

[0032] The utility model installation steps are as follows: insert the screening rod positioning block 10 into the positioning block connecting groove 24 of the main support frame 1, insert the magnet 32 ​​into the magnet mounting groove 31 of the main support frame 1 and fix it, rotate the screw connecting column 22 and the screw connecting groove 23 of the main support frame 1, insert the traction block connecting column 21 of the traction block 9 into the traction block connecting groove 20 of the main support frame 1, thread the driving screw 17 of the screw connecting column 22 to the screw mounting groove 16 of the traction block 9, rotate the upper connecting rod mounting column 13 of the driving connecting rod 12 to the upper connecting rod mounting groove 11 of the screening rod positioning block 10, rotate the lower connecting rod mounting groove 14 of the driving connecting rod 12 to the lower connecting rod mounting column 15 of the traction block 9, rotate the screw connecting column 22 The screw drive cap 19 rises to the limit position, so that one side of the screening rod avoidance groove 27 coincides with one side of the outer screen rod connecting groove 4, and the screening rod 5 is inserted into the outer screen rod connecting groove 4 and the inner screen rod connecting groove 7 of the main support frame 1, so that the screening rod positioning plate 6 of the screening rod 5 is pressed against the inner side of the outer support frame 3, so that the magnet 32 ​​and the screening rod 5 are attracted, and the screw drive cap 19 is rotated in reverse to make the traction block 9 move downward until the screening rod positioning groove 25 is pressed against the side of the screening rod 5, and the positioning U-shaped plate 8 is pressed against the lower part of the screening rod 5 array group, and the U-shaped plate mounting screw 28 is passed through the screw avoidance groove 29 of the positioning U-shaped plate 8 and is threadedly connected to the screw mounting groove 30 of the main support frame 1, so that the nut of the U-shaped plate mounting screw 28 is pressed against the lower part of the U-shaped plate mounting platform 33 of the positioning U-shaped plate 8, and the installation of this device is completed.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A small harvester screen device, characterized in that : It includes a main support frame (1), a screening rod (5), a positioning U-shaped plate (8), a traction block (9), a screening rod positioning block (10), a driving connecting rod (12), a screw connecting column (22), a U-shaped plate mounting screw (28), and a magnet (32). The bottom of the main support frame (1) has an inner support frame (2) and an outer support frame (3). The inner support frame (2) array group is in a central position. The outer support frame (3) is distributed on both sides of the inner support frame (2) array group. The outer support frame (3) has a positioning block connecting groove (24) inside. The screening rod positioning block (10) is adapted to the positioning block connecting groove (24). The screening rod positioning block (10) is connected to the positioning block connecting groove (24). The screening rod positioning block (10) slides inside the positioning block connecting groove (24). The top of the screening rod positioning block (10) has an upper connecting rod. A mounting groove (11) is provided on one side of the screening rod positioning block (10), and a driving connecting rod (12) is provided on one side of the driving connecting rod (12), and an upper connecting rod mounting column (13) is provided on one side of the driving connecting rod (12), and the upper connecting rod mounting column (13) is rotatably connected to the upper connecting rod mounting groove (11). The other side of the driving connecting rod (12) is provided with a lower connecting rod mounting groove (14), and a traction block (9) is provided on one side of the traction block (9), and a lower connecting rod mounting column (15) is provided on one side of the traction block (9), and the lower connecting rod mounting groove (14) is rotatably connected to the lower connecting rod mounting column (15). A screw mounting groove (16) is provided in the middle of the traction block (9), and a screw connecting groove (23) is provided on the surface of the main support frame (1), and the position of the screw connecting groove (23) corresponds to the position of the screw mounting groove (16), and the screw connecting column (22) is rotatably connected to the screw connecting groove (23).

2. A small harvester sieve plate device according to claim 1, characterized in that The bottom of the screw connecting column (22) is provided with a screw driving cap (19), the top of the screw connecting column (22) is provided with a driving screw (17), the driving screw (17) is threadedly connected to the screw mounting groove (16), the top of the driving screw (17) is provided with an upper limit block (18), the bottom of the traction block (9) is provided with a traction block connecting column (21), one side of the main support frame (1) is provided with a traction block connecting groove (20), the traction block connecting groove (20) is adapted to the traction block connecting column (21), the traction block connecting groove (20) is connected to the traction block connecting column (21), and the traction block connecting column (21) is connected to the traction block connecting column (21). The block connection groove (20) slides inside, the outer support frame (3) has an outer sieve rod connection groove (4) at the bottom, and multiple groups of outer sieve rod connection grooves (4) are evenly arranged around the outer support frame (3), the inner support frame (2) has an inner sieve rod connection groove (7) at the bottom, and multiple groups of inner sieve rod connection grooves (7) are evenly arranged around the inner support frame (2), the position of the outer sieve rod connection groove (4) corresponds to the position of the inner sieve rod connection groove (7), the screening rod (5) is adapted to the outer sieve rod connection groove (4) and the inner sieve rod connection groove (7), and the screening rod (5) is sequentially connected to the inner sieve rod connection groove (7) and the outer sieve rod connection groove (4) from the middle to both sides.

3. A small harvester sieve plate device according to claim 2, characterized in that : The screening rod (5) is inserted into the outer screen rod connecting groove (4) and the inner screen rod connecting groove (7), and the screening rod (5) has screening rod positioning plates (6) on both sides, and the screening rod positioning plates (6) are pressed against the side of the outer support frame (3). The bottom of the screening rod positioning block (10) has a screening rod placement groove (26), and multiple groups of screening rod placement grooves (26) are evenly arranged around the screening rod positioning block (10). The position of the screening rod placement groove (26) corresponds to the position of the outer screen rod connecting groove (4). One side of the screening rod placement groove (26) has a screening rod avoidance groove (27), and the other side of the screening rod placement groove (26) has a screening rod positioning groove (25). The bottom opening of the screening rod placement groove (26) is the same as the diameter of the screening rod (5), the screening rod positioning groove (25) is adapted to the screening rod (5), and the screening rod positioning groove (25) is connected to the screening rod (5).

4. A small harvester sieve plate device according to claim 3, characterized in that : The screening rod positioning groove (25) is sleeved on the outside of the screening rod (5), and the top of the inner screen rod connecting groove (7) has a magnet mounting groove (31), the magnet (32) is adapted to the magnet mounting groove (31), the magnet (32) is connected to the magnet mounting groove (31), the magnet (32) is inserted into the magnet mounting groove (31), the magnet (32) and the screening rod (5) are attracted, and a positioning U-shaped plate (8) is provided at the bottom of the main support frame (1), the positioning U-shaped plate (8) is pressed against the lower part of the screening rod (5) array group, and U-shaped plate mounting platforms (33) are provided on both sides of the positioning U-shaped plate (8), and a screw avoidance groove (29) is provided in the middle of the U-shaped plate mounting platform (33).

5. A small harvester sieve plate device according to claim 1, characterized in that The bottom of the main support frame (1) has a screw mounting groove (30), the position of the screw mounting groove (30) corresponds to the position of the screw avoidance groove (29), the U-shaped plate mounting screw (28) passes through the screw avoidance groove (29) and is threadedly connected to the screw mounting groove (30), and the nut of the U-shaped plate mounting screw (28) is pressed against the lower part of the U-shaped plate mounting platform (33).

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