Gap adjusting device for shakeout mechanism of sand planting machine

Abstract

The utility model relates to the technical field of sand planting machines, in particular to a gap adjusting device for a sand shakeout mechanism of a sand planting machine, which comprises a driving roller, a sand silo and a sand cutter shaft, the driving roller is rotatably connected onto a mounting seat, sand cutter mounting blocks are arranged at the top of the mounting seat, and the sand cutter shaft is connected between the two sand cutter mounting blocks. One end of the sand cutter shaft is provided with a positioning guide rod, and the other end is provided with an encoder; wherein an air cylinder is connected to one mounting seat, a pneumatic rod at the output end of the air cylinder is rotationally connected with the bottom end of the positioning guide rod, a fine adjustment motor is fixedly mounted on the side face of the sand silo through a connecting plate, a front-back telescopic protruding head is arranged at the output end of the fine adjustment motor, and the protruding head abuts against the positioning guide rod in a pushing mode. According to the gap adjusting device provided by the utility model, the encoder of the gap adjusting device is directly connected with the sanding cutter shaft, the displacement of the sanding cutter is directly measured, and compared with the traditional mode that the encoder is connected with a motor, errors of the motor and errors in the transmission process are avoided, and the gap adjusting device is more accurate.

Description

A gap adjustment device for the sand dropping mechanism of a sand planting machine Technical Field

[0001] This utility model relates to the field of sand planting machine technology, and in particular to a gap adjustment device for the sand dropping mechanism of a sand planting machine. Background Technology

[0002] Currently, sand planting machines on the market integrate sand dropping, sand spreading, and sand planting processes. During sand dropping, the sand and gravel are evenly sprinkled onto the lower plate bed through the sand dropping mechanism. During sand dropping, after the sand particles in the sand box are released, the sand particles are guided to the lower sand drive roller by the guiding action of the sand box side plate. The lower sand drive roller is driven to rotate by the motor. A sand knife is installed above the sand outlet of the lower sand drive roller to control the sand output, thereby buffering the sand particles and guiding them evenly onto the lower plate bed.

[0003] In existing technologies, the encoder is connected to the motor. When the motor is working, there will be certain errors due to its own vibration and transmission process, which will lead to the inability to accurately control the amount of sand falling. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a gap adjustment device for the sand dropping mechanism of a sand planting machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gap adjustment device for the sand dropping mechanism of a sand planting machine includes a drive roller, a sand bin, and a sand cutter shaft, wherein:

[0007] The two ends of the drive roller are rotatably connected to the mounting seats on both sides. Each mounting seat on both sides is provided with a sanding blade mounting block. The sanding blade shaft is rotatably connected between the two sanding blade mounting blocks. The two ends of the sanding blade shaft pass through the sanding blade mounting blocks on the same side and extend outward. A positioning guide rod is rotatably installed on one end of the sanding blade shaft, and an encoder is installed on the other end of the sanding blade shaft.

[0008] The mounting base is a strip-shaped support structure, with a cylinder rotatably connected to one of the mounting bases. The front end of the pneumatic rod at the output end of the cylinder is rotatably connected to the bottom end of the positioning guide rod.

[0009] In a preferred embodiment, the mounting base is provided with a motor reducer for controlling the rotation of the drive roller, and the motor reducer and the cylinder are located on two different mounting bases.

[0010] The sand chamber is fixedly connected to the sand blade mounting blocks at corresponding positions on both sides of the lower back plate facing the sand blade shaft. A fine-tuning motor is fixedly installed on the side of the sand chamber through a connecting plate. A positioner is provided at the output end of the fine-tuning motor. A protrusion extends backward from the inside of the positioner and pushes against the upper half of the positioning guide rod.

[0011] In a preferred embodiment, a sanding blade is provided at the bottom of the sanding blade shaft, and the sanding blade is located above the drive roller.

[0012] In a preferred embodiment, the bottom discharge port of the sand bin is located above the sand cutter.

[0013] The beneficial effects of this utility model are:

[0014] The gap adjustment device proposed in this solution solves the problem that when the encoder is connected to the motor, there will be certain errors during the motor transmission process, which makes it impossible to accurately control the amount of sand falling. The encoder of this gap adjustment device is directly connected to the sand cutter shaft and directly measures the displacement of the sand cutter. Compared with the traditional encoder connected to the motor, it avoids the errors of the motor itself and the transmission process, thus making it more accurate. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the gap adjustment device of the sand-falling mechanism proposed in this utility model;

[0016] Figure 2 is a schematic diagram showing the positional distribution of the encoder and the sander shaft in the installation state of the gap adjustment device proposed in this utility model.

[0017] In the diagram: 1. Mounting base; 2. Drive roller; 3. Motor reducer; 4. Sand chamber; 5. Sand cutter shaft; 6. Shaft end; 7. Positioning guide rod; 8. Cylinder; 9. Lower chamber back plate; 10. Positioner; 11. Fine-tuning motor; 12. Protrusion head; 13. Sand cutter mounting block; 14. Encoder. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In this embodiment, referring to Figures 1-2, a gap adjustment device for the sand dropping mechanism of a sand planting machine includes a drive roller 2, a sand bin 4, and a sand cutter shaft 5, wherein:

[0020] The two ends of the drive roller 2 are rotatably connected to the mounting bases 1 on both sides. The top of the mounting bases 1 on both sides is provided with a sanding knife mounting block 13. The sanding knife shaft 5 is rotatably connected between the two sanding knife mounting blocks 13. The two ends of the sanding knife shaft 5 pass through the sanding knife mounting block 13 on the same side and extend outward. A positioning guide rod 7 is rotatably installed on one side of the shaft end 6 of the sanding knife shaft 5, and an encoder 14 is installed on the other side of the shaft end 6 of the sanding knife shaft 5.

[0021] Mounting base 1 is a strip-shaped support structure. A cylinder 8 is rotatably connected to one of the mounting bases 1. The front end of the pneumatic rod at the output end of the cylinder 8 is rotatably connected to the bottom end of the positioning guide rod 7. A motor reducer 3 for controlling the rotation of the drive roller 2 is provided on the mounting base 1. The motor reducer 3 and the cylinder 8 are located on two different mounting bases 1.

[0022] The sand bin 4 has its lower back plate 9 facing the sand cutter shaft 5, and the corresponding sand cutter mounting blocks 13 are fixedly connected to both sides. A sand cutter is installed at the bottom of the sand cutter shaft 5, and the sand cutter is located above the drive roller 2. In addition, the bottom discharge port of the sand bin 4 is located above the sand cutter.

[0023] A fine-tuning motor 11 is fixedly mounted on the side of the sand chamber 4 via a connecting plate. A positioner 10 is installed at the output end of the fine-tuning motor 11. A protrusion 12 extends rearward from the positioner 10, pushing against the upper half of the positioning guide rod 7. The positioner 10 has a worm gear transmission assembly inside. The fine-tuning motor 11 controls the rotation of the worm gear inside the positioner 10, driving the worm wheel to transmit motion. A center hole with internal threads is formed at the center of the worm wheel. The tail of the protrusion 12 has a self-made lead screw thread and is helically inserted into the worm wheel of the positioner 10. When the worm wheel rotates, it controls the protrusion 12 to extend forward and press against the positioning guide rod 7.

[0024] The gap adjustment process has two steps: First, the cylinder 8 pushes the positioning guide rod 7 to rotate around the fulcrum and tilt it; Second, the fine-tuning motor 11 controls the protrusion 12 to extend and retract back and forth, and the protrusion 12 will approach the upper half of the positioning guide rod 7 during its forward movement.

[0025] The positioning guide rod 7 is tilted and contacts the protrusion 12, while the fine-tuning motor 11 controls the protrusion 12 to move closer to or away from the positioning guide rod 7. Traditional encoders 14 are directly or indirectly mounted on the motor shaft to measure the angle and speed of motor rotation. Compared to the traditional method, in this embodiment, the gap-adjusting encoder 14 is connected to the sanding blade shaft 5 to directly measure the displacement of the sanding blade. This avoids errors generated by the motor itself and during transmission, ensuring more accurate measurements.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gap adjustment device for the sand dropping mechanism of a sand planting machine, characterized in that, The assembly includes a drive roller (2), a sand chamber (4), and a sanding blade shaft (5). The drive roller (2) is rotatably connected at both ends to mounting bases (1) on both sides. Each mounting base (1) has a sanding blade mounting block (13) at its top. The sanding blade shaft (5) is rotatably connected between the two sanding blade mounting blocks (13). Both ends of the sanding blade shaft (5) pass through the sanding blade mounting blocks (13) on the same side and extend outwards. A positioning guide rod (7) is rotatably mounted on one end (6) of the sanding blade shaft (5), and an encoder (14) is mounted on the other end (6). The mounting base (1) is a strip-shaped support structure. A cylinder (8) is rotatably connected to one of the mounting bases (1). The pneumatic rod at the output end of the cylinder (8) is rotatably connected to the bottom end of the positioning guide rod (7). The sand chamber (4) is fixedly connected to the sand knife mounting block (13) at the corresponding position on both sides of the lower chamber back plate (9) facing the sand knife shaft (5). A fine-tuning motor (11) is fixedly installed on the side of the sand chamber (4) through a connecting plate. A positioner (10) is provided at the output end of the fine-tuning motor (11). A protrusion (12) extends from the inside of the positioner (10) and pushes against the upper half of the rod body of the positioning guide rod (7).

2. The gap adjustment device for the sand dropping mechanism of a sand planting machine according to claim 1, characterized in that, The mounting base (1) is provided with a motor reducer (3) for controlling the rotation of the drive roller (2), and the motor reducer (3) and the cylinder (8) are located on two different mounting bases (1).

3. The gap adjustment device for the sand dropping mechanism of a sand planting machine according to claim 1, characterized in that, The bottom of the sanding shaft (5) is provided with a sanding blade, which is located above the drive roller (2).

4. The gap adjustment device for the sand dropping mechanism of a sand planting machine according to claim 3, characterized in that, The bottom discharge port of the sand bin (4) is located above the sand cutter.

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