Safety protection mechanism for machine frame of plant protection spraying machine

Abstract

A plant protection sprayer rack safety protection mechanism belongs to agricultural machinery. Seat plates are fixedly installed on the upper portion and the lower portion of the end of a main beam frame respectively, a front arc-shaped strip-shaped hole and a rear arc-shaped strip-shaped hole which are equal in arc radius are symmetrically formed in the seat plates, a round through hole is formed in the position, between the front arc-shaped strip-shaped hole and the rear arc-shaped strip-shaped hole, of the seat plates, and connecting rotary plates with front through holes and rear through holes are fixedly installed on the upper portion and the lower portion of the end of a side beam frame respectively. A front pin shaft and a rear pin shaft are respectively inserted into a front through hole, a front arc-shaped strip-shaped hole, a rear through hole and a rear arc-shaped strip-shaped hole, a tension spring column is inserted into a round through hole, a tension spring seat plate inserted with a threaded rod is fixedly arranged on a side beam frame, two ends of a tension spring are respectively hung on the tension spring column and the threaded rod, and a nut is fixedly arranged on the threaded rod; the mechanism realizes front and back bidirectional safety protection of the rack, and is simple and reasonable in structure, low in manufacturing cost, good in safety protection effect, long in service life, low in use cost and wide in application range.

Description

Technical Field

[0001] This utility model belongs to agricultural machinery and mainly relates to the safety protection mechanism of the upper frame of a plant protection sprayer. Background Technology

[0002] Traditional plant protection sprayers, with their modular frames, lack safety protection mechanisms in their structural design, resulting in a lack of safety protection for the frames. During field operations, if the frame is obstructed or collided with by trees, utility poles, large rocks, tree roots, or other obstacles, damage to the sprayer frame or equipment can occur. Especially in recent years, with the increase in cultivated land area and the development of intensive farming practices in my country, large, wide-format plant protection sprayers have rapidly developed and are increasingly used to meet the needs of large-scale plant protection spraying operations, leading to a higher incidence of frame or equipment damage. Therefore, the safety of plant protection sprayer frames has become a priority in scientific and technological work. Currently, protective mechanisms to safeguard the frame have been developed and applied, but due to structural design deficiencies, numerous technical problems remain, including complex structures, high manufacturing costs, short component lifespans, and frequent maintenance and parts replacement, which urgently need to be addressed. Summary of the Invention

[0003] The purpose of this utility model is to address the problems existing in the prior art and, in combination with the actual needs of current plant protection spraying machinery operations, to develop and design a new structure for the safety protection mechanism of the plant protection sprayer frame, achieving the goals of simple structure, low manufacturing cost, good safety protection performance, and long service life.

[0004] The basic design of this utility model is as follows: symmetrically mounted seat plates are fixed to the upper and lower parts of the main beam frame end. A front arc-shaped strip hole and a rear arc-shaped strip hole with equal arc radii are symmetrically arranged on the front and rear parts of the seat plates. A through hole is provided on the seat plate between the front and rear arc-shaped strip holes. A connecting rotary plate is symmetrically fixed to the upper and lower parts of the side beam frame end. A front through hole and a rear through hole are symmetrically opened on the front and rear parts of the connecting rotary plate. The seat plate and the connecting rotary plate are arranged in an overlapping insertion configuration. A front pin is inserted from top to bottom into the front through hole on the connecting rotary plate and the front arc-shaped strip hole on the seat plate. The shaft can slide within the front arc-shaped slot. The rear pin is inserted sequentially from top to bottom into the rear through hole on the connecting rotary plate and the rear arc-shaped slot on the seat plate, and the rear pin can slide within the rear arc-shaped slot, thus hinged the main beam frame and the side beam frame into one unit. A tension spring column is inserted and fixed into the through hole on the seat plate, and a tension spring seat plate is fixed on the side beam frame. The threaded rod is axially movable and inserted into the tension spring seat plate. The nut is screwed onto the outer end of the threaded rod, and the nut contacts and engages with the outer end face of the tension spring seat plate. The two ends of the tension spring are respectively hooked onto the tension spring column and the threaded rod. The tension of the tension spring maintains and restores the straight-line structure of the side beam frame and the main beam frame as a whole, thus forming the safety protection mechanism of the plant protection sprayer frame.

[0005] This utility model achieves front and rear dual-directional safety protection for the plant protection machine frame. It features a novel, simple, and reasonable structure, low manufacturing cost, good safety protection effect, long service life, reduced operating costs, wide applicability, and high degree of versatility, providing technical support for the safety of plant protection sprayers. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of the safety protection mechanism of the plant protection sprayer frame;

[0007] Figure 2 yes Figure 1 Top view;

[0008] Figure 3 This is a schematic diagram of the base plate structure;

[0009] Figure 4 This is a schematic diagram of the connecting rotary plate structure;

[0010] Figure 5 This is a schematic diagram of the safety protection status of the safety protection mechanism of the plant protection sprayer frame.

[0011] Part number description in the image:

[0012] 1. Main beam frame, 2. Front pin, 3. Tension spring column, 4. Tension spring, 5. Threaded rod, 6. Tension spring seat plate, 7. Nut, 8. Side beam frame, 9. Connecting rotary plate, 9-1. Front through hole, 9-2. Rear through hole, 10. Seat plate, 10-1. Front arc-shaped strip hole, 10-2. Rear arc-shaped strip hole, 10-3. Round through hole, 11. Rear pin. Detailed Implementation

[0013] The following is a detailed description of the embodiments of this utility model with reference to the accompanying drawings. A safety protection mechanism for a plant protection sprayer frame includes a main beam frame 1 and a side beam frame 8. A base plate 10 is symmetrically fixed to the upper and lower parts of the end of the main beam frame 1. A front arc-shaped strip hole 10-1 and a rear arc-shaped strip hole 10-2 with equal arc radii are symmetrically provided on the front and rear parts of the base plate 10. A through hole 10-3 is provided on the base plate 10 between the front arc-shaped strip hole 10-1 and the rear arc-shaped strip hole 10-2. A connecting rotating plate 9 is symmetrically fixed to the upper and lower parts of the end of the side beam frame 8. A front through hole 9-1 and a rear through hole 9-2 are symmetrically provided on the front and rear parts of the connecting rotating plate 9. The base plate 10 and the connecting rotating plate 9 are arranged in an overlapping insertion configuration. A front pin 2 is inserted sequentially from top to bottom into the front through hole 9-1 on the connecting rotating plate 9 and the base plate. The front arc-shaped slot 10-1 on the 10 is inserted into the front arc-shaped slot 10-1, and the front pin 2 can slide in the front arc-shaped slot 10-1. The rear pin 11 is inserted from top to bottom into the rear through hole 9-2 on the connecting rotary plate 9 and the rear arc-shaped slot 10-2 on the seat plate 10, and the rear pin 11 can slide in the rear arc-shaped slot 10-2. Thus, the main beam frame 1 and the side beam frame 8 are hinged together. The tension spring column 3 is inserted into the round through hole 10-3 on the seat plate 10. The tension spring seat plate 6 is fixed on the side beam frame 8. The threaded rod 5 is axially movable and inserted into the tension spring seat plate 6. The nut 7 is screwed on the outer end of the threaded rod 5. The nut 7 is in contact with the outer end face of the tension spring seat plate 6. The two ends of the tension spring 4 are respectively hooked on the tension spring column 3 and the threaded rod 5. The tension of the tension spring 4 maintains and restores the straight-line structure of the side beam frame 8 and the main beam frame 1 as a whole.

[0014] During operation, when the plant protection sprayer moves forward and encounters obstacles such as trees or utility poles, the side beam frame 8, under the resistance of their backward push, rotates around the rear pin 11 on the seat plate 10 at the end of the main beam frame 1 via the connecting rotary plate 9. Under the control of the front pin 2 and the front arc-shaped strip hole 10-1 on the seat plate 10, it completes the rearward and lateral rotation to avoid hard collisions and obstructions from obstacles. At this time, the tension spring 4 is stretched and rises. When the side beam frame 8 is no longer in contact with the obstacle, under the tension of the tension spring 4, the side beam frame 8 immediately reverses and moves back through the cooperation of the tension spring column 3 and the tension spring seat plate 6. This causes the front pin 2 to quickly return to the initial position at the inner end of the front arc-shaped strip hole 10-1 on the seat plate 10. At this time, the main beam frame 1 and the side beam frame 8 return to a straight frame state and continue normal operation. When the plant protection sprayer is moving backward and the side beam frame 8 encounters an obstacle, the movement is opposite to the aforementioned rotation direction, which ensures the safety of the implement and the frame.

Claims

1. A safety protection mechanism for the frame of a plant protection sprayer, comprising a main beam frame (1) and side beam frames (8), characterized in that: A seat plate (10) is symmetrically fixed to the upper and lower parts of the end of the main beam frame (1). A front arc-shaped strip hole (10-1) and a rear arc-shaped strip hole (10-2) with equal arc radii are symmetrically arranged on the front and rear parts of the seat plate (10). A through hole (10-3) is provided on the seat plate (10) between the front arc-shaped strip hole (10-1) and the rear arc-shaped strip hole (10-2). At the end of the side beam frame (8)... A rotating plate (9) is symmetrically fixed to the upper and lower parts of the connecting plate (9). A front through hole (9-1) and a rear through hole (9-2) are symmetrically opened on the front and rear parts of the connecting plate (9). The base plate (10) and the connecting plate (9) are arranged in an overlapping insertion configuration. The front pin (2) is inserted from top to bottom into the front through hole (9-1) on the connecting plate (9) and the front arc-shaped strip hole (10-1) on the base plate (10). (2) The rear pin (11) can slide in the front arc-shaped strip hole (10-1). The rear pin (11) is inserted from top to bottom into the rear through hole (9-2) on the connecting rotary plate (9) and the rear arc-shaped strip hole (10-2) on the seat plate (10). The rear pin (11) can slide in the rear arc-shaped strip hole (10-2). Thus, the main beam frame (1) and the side beam frame (8) are hinged together. A fixed tension spring column is inserted into the round through hole (10-3) on the seat plate (10). (3) A tension spring seat plate (6) is fixed on the side beam frame (8). The threaded rod (5) is axially movable and inserted into the tension spring seat plate (6). The nut (7) is screwed onto the outer end of the threaded rod (5). The nut (7) is in contact with the outer end face of the tension spring seat plate (6). The two ends of the tension spring (4) are respectively hooked onto the tension spring column (3) and the threaded rod (5). The tension of the tension spring (4) maintains and restores the straight-line structure of the side beam frame (8) and the main beam frame (1).

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