Plant protection machine frame

Abstract

The utility model provides a plant protection machine frame, which belongs to the technical field of plant protection machines and is characterized in that one end of a first frame is hinged with one end of a second frame, a first extension arm is hinged on one side of the first frame, a second extension arm is hinged on the other side of the first frame, and an electric control hydraulic valve assembly is arranged at one end of the first frame; the electric control hydraulic valve assembly is connected with a first hydraulic pipe, a second hydraulic pipe and a third hydraulic pipe, the first hydraulic pipe extends towards the first frame, the second hydraulic pipe extends towards the second frame, and the third hydraulic pipe extends from the first frame to the second frame; the electric control hydraulic valve assembly is arranged at the end of the first vehicle frame, the electric control hydraulic valve assembly cannot be damaged in the using process of the plant protection vehicle frame, the first hydraulic pipe extends towards the first vehicle frame, the second hydraulic pipe extends towards the second vehicle frame, and the third hydraulic pipe extends towards the second vehicle frame. The first hydraulic pipe, the second hydraulic pipe and the third hydraulic pipe cannot be broken due to buffering vibration of the plant protection vehicle frame.

Description

Technical Field

[0001] The utility model relates to the technical field of plant protection machines, in particular to a plant protection machine frame. Background Art

[0002] Plant protection machines are widely used as agricultural equipment throughout China. Patent publication number: CN108739765A, Patent Name: Plant Protection Machine, Sprayer Boom Device, and Plant Protection Method. The patent discloses that "the nozzle assembly is height-adjustably connected to the extension arm, thereby enabling the plant protection machine to spray at different heights." While the extension arm can change the spraying height and expand the spraying area, its deployment changes the center of gravity of the entire machine. If the machine travels over bumpy roads, it will experience significant sway, and the extension arm will undulate with the road surface, easily damaging or breaking the extension arm or frame. In order to reduce the bumps during the movement of the plant protection machine, a buffer cylinder is set on the frame of the plant protection machine to reduce the bumps of the plant protection machine. In order to reduce the buffering of the plant protection machine, the frame of the plant protection machine is usually divided into two hinged parts, and the buffering effect is achieved by bending the frame of the plant protection machine. However, after the frame is divided into two parts, the hydraulic oil pipe controlled by the electric hydraulic valve is prone to bending or cutting due to the frame during the buffering process, resulting in failure of the expansion arm or other parts controlled by the electric hydraulic valve.

[0003] Therefore, there is an urgent need for a plant protection machine frame that can protect the electronically controlled hydraulic valve pipeline. Utility Model Content

[0004] In view of this, the utility model provides a plant protection machine frame for protecting a hydraulic pipeline controlled by an electronically controlled hydraulic valve.

[0005] The technical solution of the present utility model is achieved in this way: by setting the position of the electronically controlled hydraulic valve assembly, damage to the first hydraulic pipe, the second hydraulic pipe and the third hydraulic pipe is avoided.

[0006] On the basis of the above technical solution, preferably, a plant protection machine frame includes a first frame, a second frame, a first arm and a second arm, one end of the first frame is hinged to one end of the second frame, the first arm is hinged to one side of the first frame, and the second arm is hinged to the other side of the first frame, and an electronically controlled hydraulic valve assembly is provided at one end of the first frame away from the second frame, and the electronically controlled hydraulic valve assembly is connected to a first hydraulic pipe, a second hydraulic pipe and a third hydraulic pipe, the first hydraulic pipe extends toward the first frame, the second hydraulic pipe extends toward the second frame, and the third hydraulic pipe extends from the first frame to the second frame.

[0007] On the basis of the above technical solution, preferably, it also includes a first arm hydraulic cylinder, one end of the first arm hydraulic cylinder is hinged to the first frame, and the other end is hinged to the first arm, and the end of the first hydraulic pipe away from the electronically controlled hydraulic valve assembly is connected to the first arm hydraulic cylinder.

[0008] On the basis of the above technical solution, preferably, it also includes a second arm hydraulic cylinder, one end of the second arm hydraulic cylinder is hinged to the first frame, and the other end is hinged to the second arm, and the end of the second hydraulic pipe away from the electronically controlled hydraulic valve assembly is connected to the second arm hydraulic cylinder.

[0009] On the basis of the above technical solution, preferably, it further includes a cylinder body, a first end cover, a second end cover, a piston rod and a piston, the piston is arranged in the cylinder body, the first end cover is arranged at one end of the cylinder body, the second end cover is arranged at the other end of the cylinder body, one end of the piston rod passes through the second end cover and is connected to the piston, and also includes a spring, one end of the spring is arranged on the second end cover, and the other end is arranged on the first end cover. As the piston moves in the cylinder body, the spring is compressed or stretched.

[0010] On the basis of the above technical solution, preferably, the cylinder body is hinged to the second frame, the piston rod is hinged to the first frame, and the third hydraulic pipe is arranged on a side away from the cylinder body.

[0011] On the basis of the above technical solution, preferably, the cylinder body is provided with an air hole, the air hole is provided at one end of the cylinder body close to the second cylinder head, and the air hole is communicated with the interior of the cylinder body.

[0012] On the basis of the above technical solution, preferably, a plurality of first sealing rings are provided on the periphery of the piston, a plurality of second sealing rings are provided on the periphery of the second end cover; and a plurality of third sealing rings are provided between the piston rod and the second end cover.

[0013] On the basis of the above technical solution, preferably, the second end cover is connected to the cylinder body through a threaded connection; one end of the piston rod is inserted into the piston, and the end of the piston rod inserted into the piston is connected to the piston through a threaded connection.

[0014] On the basis of the above technical solution, preferably, one end of the piston rod passes through the piston, and a plurality of fourth sealing rings are provided between the piston rod and the piston.

[0015] On the basis of the above technical solution, preferably, the cylinder body is provided with an oil filling port, the oil filling port is provided at one end of the cylinder body close to the first cylinder head, and the oil filling port is communicated with the interior of the cylinder body.

[0016] The utility model has the following beneficial effects compared with the prior art:

[0017] (1) The electronically controlled hydraulic valve assembly is arranged at the end of the first frame. The electronically controlled hydraulic valve assembly will not be damaged during the use of the agricultural machinery frame. The first hydraulic pipe, the second hydraulic pipe and the third hydraulic pipe, the first hydraulic pipe extends in the direction of the first frame, and the second hydraulic pipe extends in the direction of the second frame. The first hydraulic pipe, the second hydraulic pipe and the third hydraulic pipe will not be broken due to the buffering vibration of the agricultural machinery frame;

[0018] (2) When the agricultural machinery is traveling on a bumpy road, the spring piston rod transmits the external force exerted by the bumps during the movement of the agricultural machinery to the spring. The spring acts as a buffer for the entire frame during compression or extension, thereby protecting both the frame and the extension arm on the frame from damage or breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a three-dimensional diagram of a frame of a plant protection machine according to the present invention;

[0021] Figure 2 This is a top view of a frame of a plant protection machine according to the present invention;

[0022] Figure 3 This is a front view of a frame of a plant protection machine according to the present invention;

[0023] Figure 4 For this utility model Figure 1 A partial enlarged view of . DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-4As shown, a plant protection machine frame includes a first frame 31, a second frame 32, a first arm 33 and a second arm 34. One end of the first frame 31 is hinged to one end of the second frame 32, the first arm 33 is hinged to one side of the first frame 31, and the second arm 34 is hinged to the other side of the first frame 31. An electronically controlled hydraulic valve assembly 4 is provided at one end of the first frame 31 away from the second frame 32. The electronically controlled hydraulic valve assembly 4 is connected to a first hydraulic pipe 41, a second hydraulic pipe 42, a third hydraulic pipe 43 and a fourth hydraulic pipe 44. The first hydraulic pipe 41 extends toward the first frame 31, the second hydraulic pipe 42 extends toward the second frame 32, and the third hydraulic pipe 43 and the fourth hydraulic pipe 44 extend from the first frame 31 to the second frame 32. The electronically controlled hydraulic valve assembly 4 is disposed at the end of the first frame 31. The frame of the agricultural machinery will not be damaged during use. The first hydraulic pipe 41, the second hydraulic pipe 42, and the third hydraulic pipe 43 extend toward the first frame 31, and the second hydraulic pipe 42 extends toward the second frame 32. These pipes will not rupture due to the vibration buffering of the agricultural machinery frame. Each of the first hydraulic pipe 41, the second hydraulic pipe 42, and the third hydraulic pipe 43 includes two pipes: an oil inlet pipe and an oil return pipe. Only the oil inlet pipe is labeled here.

[0026] It also includes a first arm hydraulic cylinder 51, one end of which is hinged to the first frame 31 and the other end is hinged to the first arm 33. The end of the first hydraulic pipe 41 away from the electronically controlled hydraulic valve assembly 4 is connected to the first arm hydraulic cylinder 51.

[0027] It also includes a second arm hydraulic cylinder 52, one end of which is hinged to the first frame 31 and the other end is hinged to the second arm 34, and the end of the second hydraulic pipe 42 away from the electronically controlled hydraulic valve assembly 4 is connected to the second arm hydraulic cylinder 52.

[0028] It also includes a cylinder body 1, a first end cover 13, a second end cover 15, a piston rod 22 and a piston 21. The piston 21 is arranged in the cylinder body 1. The first end cover 13 is arranged at one end of the cylinder body 1, and the second end cover 15 is arranged at the other end of the cylinder body 1. One end of the piston rod 22 passes through the second end cover 15 and is connected to the piston 21. It also includes a spring 3. One end of the spring 3 is arranged on the second end cover 15, and the other end is arranged on the piston 21. As the piston 21 moves in the cylinder body 1, the spring 3 is compressed or stretched. When the agricultural machinery is traveling on a bumpy road, the piston rod 22 transfers the external force applied by the bumps during the movement of the agricultural machinery to the spring 3. The spring 3 acts as a buffer for the entire frame during compression or stretching, which can protect both the frame and the extension arm on the frame from being damaged or broken.

[0029] The cylinder body 1 is hinged to the second frame 32, the piston rod 22 is hinged to the first frame 31, and the third hydraulic pipe 43 is arranged on a side away from the cylinder body 1. The third hydraulic pipe 43 is arranged on a side away from the cylinder body 1 to prevent damage to the third hydraulic pipe 43 during the buffering process between the first frame 31 and the second frame 32.

[0030] The spring 3 is sleeved on the piston rod 22, and the spring 3 is welded or plugged with the piston 21, and the spring 3 is welded or plugged with the second end cover 15. The spring 3 is a flexible material. Since the force applied to the plant protection machine during movement is particularly large, in order to improve the reliability of the spring 3, the preferred method is to sleeve the spring 3 on the piston rod 22 to prevent the spring 3 from being damaged or failing due to external force. If the spring 3 is to exert its tension or compression to offset the external force applied to the plant protection machine during the bumping process and reduce the damage to the plant protection machine caused by the external force, it needs to be connected to the piston 21 and the second end cover 15. Since the spring 3 is subjected to a large force, welding is usually used, and it can also be fixed by hanging or plugging. The above fixing methods are all existing methods, which can be implemented by those skilled in the art and will not be described in detail.

[0031] The cylinder body 1 is provided with an air hole 12, which is provided at one end of the cylinder body 1 near the second end cover 15, and the air hole 12 is connected to the interior of the cylinder body 1. The air hole 12 is used to inflate the cylinder body 1 to increase the pressure in the cylinder body 1. The increased pressure is the pressure between the piston 21 and the second end cover 15, which increases the resistance of the piston 21 to move toward the second end cover 15, avoids frequent compression of the spring 3 resulting in spring failure, and cushions the force of the spring 3 and the pressure of the gas, providing an additional layer of buffering protection. During use, the buffering capacity is stronger, the reliability is significantly improved, and the protection of the frame and extension arm is significantly improved. The sealing device on the air hole 12 is not drawn in the accompanying drawings. Since the air hole 12 is subjected to high pressure, a threaded cap is usually used to set a pipe thread to connect with the air hole 12, which also has a sealing effect.

[0032] A plurality of first sealing rings 211 are provided on the periphery of the piston 21 to prevent gas from flowing out of the cylinder body 1 from the piston 21. The first sealing rings 211 are provided on the piston 21. A plurality of second sealing rings 151 are provided on the periphery of the second end cover 15 to prevent gas from flowing out of the cylinder body 1 from the second end cover; a plurality of third sealing rings 152 are provided between the piston rod 22 and the second end cover 15 to prevent gas from flowing out of the cylinder body 1 from the gap between the piston rod 22 and the second end cover 15.

[0033] The second end cover 15 is connected to the cylinder body 1 by a threaded connection, which is convenient for disassembly and maintenance; one end of the piston rod 22 is inserted into the piston 21, and the end of the piston rod 22 inserted into the piston 21 is connected to the piston 21 by a threaded connection, which is convenient for disassembly and maintenance; one end of the piston rod 22 passes through the piston 21, and a plurality of fourth sealing rings 212 are provided between the piston rod 22 and the piston 21 to prevent gas from flowing out of the cylinder body 1 from between the piston rod 22 and the piston 21.

[0034] The cylinder body 1 is provided with an oil filling port 11, which is arranged at one end of the cylinder body 1 close to the first end cover 13. The oil filling port 11 is connected to the interior of the cylinder body 1. Oil is injected into the cylinder body 1 through the oil filling port 11 to improve the lubrication effect between the piston 21 and the cylinder body 1, making the entire buffer device more sensitive and reliable.

[0035] The first end cover 13 is buckled on the cylinder body 1 , and a connecting ring 14 is provided on the side of the first end cover 13 away from the cylinder body 1 . The end cover 13 is used to seal the cylinder body 1 , and the connecting ring 14 is used to install the device on the vehicle frame.

[0036] The end of the piston rod 22 extending through the second end cover 15 and out of the cylinder body 1 is provided with an external thread. The end of the piston rod 22 extending out of the cylinder body 1 is provided with an external thread for easy connection with an external cylinder or hydraulic cylinder.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A plant protection machine frame, comprising a first frame (31), a second frame (32), a first extension arm (33) and a second extension arm (34), wherein one end of the first frame (31) is hinged to one end of the second frame (32), the first extension arm (33) is hinged to one side of the first frame (31), and the second extension arm (34) is hinged to the other side of the first frame (31), characterized in that: An electric-controlled hydraulic valve assembly (4) is provided at one end of the first frame (31) away from the second frame (32); the electric-controlled hydraulic valve assembly (4) is connected to a first hydraulic pipe (41), a second hydraulic pipe (42) and a third hydraulic pipe (43); the first hydraulic pipe (41) extends toward the first frame (31), the second hydraulic pipe (42) extends toward the second frame (32), and the third hydraulic pipe (43) extends from the first frame (31) to the second frame (32).

2. The frame of the plant protection machine according to claim 1, characterized in that: The vehicle further comprises a first arm hydraulic cylinder (51), one end of the first arm hydraulic cylinder (51) being hinged to the first vehicle frame (31) and the other end being hinged to the first arm (33), and one end of the first hydraulic pipe (41) being away from the electronically controlled hydraulic valve assembly (4) being in communication with the first arm hydraulic cylinder (51).

3. The frame of the plant protection machine according to claim 1, characterized in that: The vehicle further comprises a second arm hydraulic cylinder (52), one end of the second arm hydraulic cylinder (52) being hinged to the first vehicle frame (31) and the other end being hinged to the second arm (34), and one end of the second hydraulic pipe (42) being away from the electronically controlled hydraulic valve assembly (4) being in communication with the second arm hydraulic cylinder (52).

4. The frame of the plant protection machine according to claim 1, characterized in that: The invention also includes a cylinder body (1), a first end cover (13), a second end cover (15), a piston rod (22) and a piston (21), wherein the piston (21) is arranged in the cylinder body (1), the first end cover (13) is arranged at one end of the cylinder body (1), the second end cover (15) is arranged at the other end of the cylinder body (1), one end of the piston rod (22) passes through the second end cover (15) and is connected to the piston (21), and further includes a spring (3), one end of the spring (3) is arranged on the second end cover (15), and the other end is arranged on the piston (21), and the spring (3) is compressed or stretched when the piston (21) moves in the cylinder body (1) as the piston rod (22) moves.

5. The frame of the plant protection machine according to claim 4, characterized in that: The cylinder body (1) is hinged to the second frame (32), the piston rod (22) is hinged to the first frame (31), and the third hydraulic pipe (43) is arranged on a side away from the cylinder body (1).

6. The frame of the plant protection machine according to claim 4, characterized in that: The cylinder body (1) is provided with an air hole (12), which is provided at one end of the cylinder body (1) close to the second end cover (15), and the air hole (12) is communicated with the interior of the cylinder body (1).

7. The frame of the plant protection machine according to claim 4, characterized in that: A plurality of first sealing rings (211) are provided on the outer periphery of the piston (21), a plurality of second sealing rings (151) are provided on the outer periphery of the second end cover (15); and a plurality of third sealing rings (152) are provided between the piston rod (22) and the second end cover (15).

8. The frame of the plant protection machine according to claim 4, characterized in that: The second end cover (15) is connected to the cylinder body (1) via a threaded connection; one end of the piston rod (22) is inserted into the piston (21), and the end of the piston rod (22) inserted into the piston (21) is connected to the piston (21) via a threaded connection.

9. The frame of the plant protection machine according to claim 4, characterized in that: One end of the piston rod (22) passes through the piston (21), and a plurality of fourth sealing rings (212) are provided between the piston rod (22) and the piston (21).

10. The frame of the plant protection machine according to claim 4, characterized in that: The cylinder body (1) is provided with an oil filling port (11), which is provided at one end of the cylinder body (1) close to the first end cover (13), and is communicated with the interior of the cylinder body (1).

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