Pesticide spraying frame lifting system and sprayer

Abstract

The utility model relates to a pesticide spraying frame lifting system and a spraying machine, the lifting system comprises a proportioning valve, two balance valves and two executing mechanisms, the proportioning valve is provided with an oil inlet P, an oil return port T, a first oil outlet and a second oil outlet; the two balance valves are provided with a first connector, a second connector, a third connector and a fourth connector respectively, the two second connectors are communicated with ascending cavities of the two executing mechanisms through first pipelines respectively, and the two third connectors are communicated with descending cavities of the two executing mechanisms through second pipelines respectively. One first oil outlet is communicated with one first connector through an oil supply pipeline, and the other first connector is communicated with the oil supply pipeline through a third pipeline; wherein one second oil outlet is communicated with one fourth connector through an oil return pipeline, and the other fourth connector is communicated with the oil return pipeline through a fourth pipeline. The hydraulic lifting device has the advantages of being simple in structure, reasonable in design, capable of achieving lifting of the pesticide spraying frame through hydraulic pressure, accurate in control, good in control accuracy and small in impact.

Description

Technical Field

[0001] The utility model relates to the technical field of sprayers, in particular to a medicine spraying frame lifting system and a sprayer. Background Art

[0002] A sprayer is a machine that disperses liquid into a mist. It is a type of machinery that can be used for agricultural, medical, and other purposes (such as industrial). Agricultural applications are classified as agricultural machinery and plant protection machinery. Human-powered sprayers are generally called sprayers, while those powered by power (engines or electric motors) are called spray machines.

[0003] The lifting control of traditional sprayers is mechanical, with poor control accuracy and large impact. Utility Model Content

[0004] The utility model provides a medicine spraying frame lifting system and a sprayer, aiming to solve the problems in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A spray rack lifting system includes a proportional control valve, two balancing valves, and two actuators. The proportional control valve is provided with an oil inlet P, an oil return port T, an oil outlet 1, and an oil outlet 2. The oil inlet P is connected to the oil outlet 1, and the oil return port T is connected to the oil outlet 2, or the oil inlet P is connected to the oil outlet 2, and the oil return port T is connected to the oil outlet 1.

[0007] The two balancing valves are respectively provided with an interface 1 and an interface 2 that are connected to or disconnected from each other, and an interface 3 and an interface 4 that are connected to each other. The two interfaces 2 are respectively connected to the rising chambers of the two actuators through pipeline 1, and the two interfaces 3 are respectively connected to the descending chambers of the two actuators through pipeline 2; one of the oil outlets 1 is connected to one of the interfaces 1 through the oil supply pipeline, and the other interface 1 is connected to the oil supply pipeline through pipeline 3; one of the oil outlets 2 is connected to one of the interfaces 4 through the return oil pipeline, and the other interface 4 is connected to the return oil pipeline through pipeline 4.

[0008] The beneficial effects of the utility model are as follows: during operation, the oil fed in through the oil inlet P reaches the two actuators after passing through the two balancing valves, and the oil in the two actuators is returned through the oil return port T after passing through the two balancing valves, which makes the operation convenient and efficient.

[0009] The utility model has a simple structure and a reasonable design, utilizes hydraulic pressure to realize the lifting and lowering of the spraying frame, realizes precise control, has good control accuracy and small impact.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the two balancing valves respectively include a safety valve and a one-way valve, and an oil port on each of the two safety valves is connected to one end of each of the two pipelines one; another oil port on one of the safety valves is connected to one end of the oil supply pipeline, and another oil port on the other safety valve is connected to one end of the pipeline three;

[0012] The two ends of one of the one-way valves are respectively connected to one of the pipelines 1 and the oil supply pipeline through pipelines, and the two ends of the other one-way valve are respectively connected to the other pipeline 1 and the pipeline 3 through pipelines.

[0013] The beneficial effect of adopting the above further solution is that during operation, when the valve core of the proportional control valve is in the right position, the two safety valves are disconnected, and the oil reaches the two actuators respectively through the two one-way valves to realize the raising of the spray rack;

[0014] When the valve core of the proportional control valve is in the left position, the oil cannot pass through the two one-way valves. Part of the oil reaches the two actuators respectively, and part of the oil reaches the two safety valves to open the two safety valves. At this time, the oil in the descending chambers of the two actuators is returned through the two safety valves to realize the descending of the spray rack.

[0015] Furthermore, the spring interfaces on the two safety valves are respectively connected to the oil return pipeline and the second pipeline through throttling pipelines.

[0016] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and utilizing two throttling pipelines to allow the oil to reach the two safety valves to open the two safety valves.

[0017] Furthermore, a throttle valve is fixedly installed on each of the two throttling pipelines.

[0018] The beneficial effects of adopting the above further solution are simple structure and reasonable design. Two throttle valves are used to control the oil reaching the two safety valves, preventing the two actuators from driving the spray rack to drop suddenly, thereby ensuring the stable operation of the two actuators.

[0019] Furthermore, it also includes an energy storage mechanism, which is connected to the two pipelines through pipelines.

[0020] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the provision of an energy storage mechanism to ensure stable operation of the two actuators.

[0021] Furthermore, the energy storage mechanism includes two accumulators, and the two accumulators are connected to the two pipelines through pipelines respectively.

[0022] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and stable operation of the two actuators is ensured by providing two accumulators.

[0023] Furthermore, the two actuators are hydraulic cylinders respectively.

[0024] The beneficial effects of adopting the above further solution are simple structure, reasonable design, utilization of the extension and retraction of the hydraulic cylinder to realize the lifting and lowering of the spraying frame, and convenient operation.

[0025] Furthermore, the proportional control valve is a hydraulic proportional control valve.

[0026] The beneficial effect of adopting the above further solution is that the hydraulic proportional control valve is reasonably set, and the hydraulic proportional control valve can accurately adjust the hydraulic flow in the hydraulic system according to the size of the electrical signal.

[0027] Furthermore, the proportional control valve is a three-position four-way hydraulic proportional control valve.

[0028] The beneficial effect of adopting the above further solution is that the hydraulic proportional control valve is reasonably set, and the hydraulic proportional control valve can accurately adjust the hydraulic flow in the hydraulic system according to the size of the electrical signal.

[0029] The utility model also relates to a sprayer, comprising the above-mentioned spray rack lifting system.

[0030] The beneficial effect of adopting the above further solution is that the utility model also provides a sprayer with a simple structure and reasonable design. The sprayer uses hydraulic pressure to realize the lifting and lowering of the spray rack, achieving precise control, good control accuracy and small impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the utility model;

[0032] Figure 2 This is a schematic diagram of the principle of the spraying rack in the utility model when it rises;

[0033] Figure 3 This is a schematic diagram of the principle of the spraying rack in the utility model when it descends.

[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0035] 1. Proportional control valve; 2. Pipeline 1; 3. Pipeline 2; 4. Pipeline 3; 5. Oil supply line; 6. Oil return line; 7. Safety valve; 8. Check valve; 9. Throttle line; 10. Throttle valve; 11. Accumulator; 12. Hydraulic cylinder; 13. Pipeline 4. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0040] Example 1

[0041] like Figures 1 to 3 As shown, this embodiment provides a spray rack lifting system, including a proportional control valve 1, two balancing valves and two actuators. The proportional control valve 1 is provided with an oil inlet P, an oil return port T, an oil outlet 1 and an oil outlet 2. The oil inlet P is connected to the oil outlet 1 and the oil return port T is connected to the oil outlet 2, or the oil inlet P is connected to the oil outlet 2 and the oil return port T is connected to the oil outlet 1;

[0042] The two balancing valves are respectively provided with an interface 1 and an interface 2 that are connected or disconnected to each other, and an interface 3 and an interface 4 that are connected to each other. The two interfaces 2 are respectively connected to the rising chambers of the two actuators through pipeline 1 2, and the two interfaces 3 are respectively connected to the descending chambers of the two actuators through pipeline 2 3; one of the oil outlets 1 is connected to one of the interfaces 1 through the oil supply pipeline 5, and the other interface 1 is connected to the oil supply pipeline 5 through pipeline 3 4; one of the oil outlets 2 is connected to one of the interfaces 4 through the return oil pipeline 6, and the other interface 4 is connected to the return oil pipeline 6 through pipeline 4 13.

[0043] During operation, the oil fed in through the oil inlet P reaches the two actuators after passing through two balancing valves, and the oil in the two actuators is returned through the oil return port T after passing through two balancing valves respectively, which makes the operation convenient and efficient.

[0044] This embodiment has a simple structure and a reasonable design, and utilizes hydraulic pressure to realize the lifting and lowering of the spraying frame, thereby achieving precise control, good control accuracy, and small impact.

[0045] Example 2

[0046] Based on Example 1, in this embodiment, the two balancing valves respectively include a safety valve 7 and a one-way valve 8, and one oil port on each of the two safety valves 7 is respectively connected to one end of the two pipelines 1 2; another oil port on one of the safety valves 7 is connected to one end of the oil supply pipeline 5, and another oil port on the other safety valve 7 is connected to one end of the pipeline 3 4;

[0047] The two ends of one of the one-way valves 8 are connected to one of the pipelines 1 2 and the oil supply pipeline 5 through pipelines, and the two ends of the other one-way valve 8 are connected to the other pipeline 1 2 and the pipeline 3 4 through pipelines.

[0048] During operation, when the valve core of the proportional control valve 1 is in the right position, the two safety valves 7 are disconnected, and the oil reaches the two actuators through the two one-way valves 8 to realize the rise of the spray rack;

[0049] When the valve core of the proportional control valve 1 is in the left position, the oil cannot pass through the two one-way valves 8. Part of the oil reaches the two actuators respectively, and part of the oil reaches the two safety valves 7 to open the two safety valves 7. At this time, the oil in the descending chambers of the two actuators is returned through the two safety valves 7 to realize the descent of the spray rack.

[0050] Example 3

[0051] On the basis of Example 2, in this embodiment, the spring interfaces on the two safety valves 7 are respectively connected to the oil return line 6 and the second line 3 through the throttling line 9.

[0052] This solution has a simple structure and a reasonable design. Two throttling pipelines 9 are used to allow the oil to reach the two safety valves 7 so as to open the two safety valves 7 .

[0053] It should be noted that the two safety valves 7 and the two one-way valves 8 respectively adopt existing technologies, and their specific decoupling and principles are not described in detail here.

[0054] Example 4

[0055] On the basis of Example 3, in this embodiment, a throttle valve 10 is fixedly installed on each of the two throttle pipes 9 .

[0056] This solution has a simple structure and a reasonable design. It uses two throttle valves 10 to control the oil reaching the two safety valves 7, preventing the two actuators from causing the spray rack to drop suddenly, thereby ensuring the stable operation of the two actuators.

[0057] Example 5

[0058] On the basis of the above embodiments, this embodiment further includes an energy storage mechanism, which is connected to the two pipelines 1 and 2 respectively through pipelines.

[0059] This solution has a simple structure and reasonable design, and the stable operation of the two actuators is ensured by setting up an energy storage mechanism.

[0060] Example 6

[0061] On the basis of Example 5, in this embodiment, the energy storage mechanism includes two accumulators 11, and the two accumulators 11 are connected to the two pipelines 2 through pipelines respectively.

[0062] This solution has a simple structure and a reasonable design, and the two accumulators 11 are provided to ensure stable operation of the two actuators.

[0063] Example 7

[0064] On the basis of the above embodiments, in this embodiment, the two actuators are hydraulic cylinders 12 respectively.

[0065] This solution has a simple structure and a reasonable design. The spraying frame is lifted and lowered by utilizing the extension and retraction of the hydraulic cylinder 12, and the operation is convenient.

[0066] Example 8

[0067] On the basis of the above embodiments, in this embodiment, the proportional control valve 1 is a hydraulic proportional control valve.

[0068] The hydraulic proportional control valve is reasonably set up, and the hydraulic proportional control valve can accurately adjust the hydraulic flow in the hydraulic system according to the size of the electrical signal.

[0069] Example 9

[0070] On the basis of Example 8, in this embodiment, the proportional control valve 1 is a three-position four-way hydraulic proportional control valve.

[0071] The hydraulic proportional control valve is reasonably set up, and the hydraulic proportional control valve can accurately adjust the hydraulic flow in the hydraulic system according to the size of the electrical signal.

[0072] Example 10

[0073] On the basis of the above embodiments, this embodiment further provides a sprayer, comprising the above-mentioned spray rack lifting system.

[0074] This embodiment also provides a sprayer with a simple structure and reasonable design. The sprayer utilizes hydraulic pressure to achieve the lifting and lowering of the spray rack, thereby achieving precise control, good control accuracy, and small impact.

[0075] The working principle of this utility model is as follows:

[0076] During operation, when the valve core of the proportional control valve 1 is in the right position, the two safety valves 7 are disconnected, and the oil reaches the rising chambers of the two hydraulic cylinders 12 through the two one-way valves 8 to realize the rising of the spray rack;

[0077] When the valve core of the proportional control valve 1 is in the left position, the oil cannot pass through the two one-way valves 8. Part of the oil reaches the descending chambers of the two hydraulic cylinders 12 respectively. At the same time, part of the oil reaches the two safety valves 7 through the two throttle valves 10 to open the two safety valves 7. At this time, the oil in the descending chambers of the two hydraulic cylinders 12 returns through the two safety valves 7 to realize the descent of the spray rack.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0079] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0080] 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 spray rack lifting system, characterized by: The proportional regulating valve (1) comprises two balancing valves and two actuators. The proportional regulating valve (1) is provided with an oil inlet P, an oil return port T, an oil outlet 1 and an oil outlet 2. The oil inlet P is connected to the oil outlet 1 and the oil return port T is connected to the oil outlet 2, or the oil inlet P is connected to the oil outlet 2 and the oil return port T is connected to the oil outlet 1. The two balancing valves are respectively provided with an interface 1 and an interface 2 that are connected or disconnected with each other, and an interface 3 and an interface 4 that are connected with each other. The two interfaces 2 are respectively connected with the rising chambers of the two actuators through the pipeline 1 (2), and the two interfaces 3 are respectively connected with the descending chambers of the two actuators through the pipeline 2 (3); one of the oil outlets 1 is connected with one of the interfaces 1 through the oil supply pipeline (5), and the other interface 1 is connected with the oil supply pipeline (5) through the pipeline 3 (4); one of the oil outlets 2 is connected with one of the interfaces 4 through the oil return pipeline (6), and the other interface 4 is connected with the oil return pipeline (6) through the pipeline 4 (13).

2. The spray rack lifting system according to claim 1, characterized in that: The two balancing valves respectively include a safety valve (7) and a one-way valve (8), and one oil port on each of the two safety valves (7) is connected to one end of each of the two pipelines (2); another oil port on one of the safety valves (7) is connected to one end of the oil supply pipeline (5), and another oil port on the other safety valve (7) is connected to one end of the pipeline (4); The two ends of one of the one-way valves (8) are respectively connected to one of the pipelines 1 (2) and the oil supply pipeline (5) through pipelines, and the two ends of the other one-way valve (8) are respectively connected to the other pipeline 1 (2) and the pipeline 3 (4) through pipelines.

3. The spray rack lifting system according to claim 2, characterized in that: The spring interfaces on the two safety valves (7) are respectively connected to the oil return pipeline (6) and the second pipeline (3) through the throttling pipeline (9).

4. The spray rack lifting system according to claim 3, characterized in that: A throttle valve (10) is fixedly installed on each of the two throttle pipelines (9).

5. The spray rack lifting system according to any one of claims 1 to 4, characterized in that: It also includes an energy storage mechanism, which is connected to the two pipelines (2) through pipelines.

6. The spray rack lifting system according to claim 5, characterized in that: The energy storage mechanism comprises two energy accumulators (11), and the two energy accumulators (11) are connected to the two pipelines (2) through pipelines respectively.

7. The spray rack lifting system according to any one of claims 1 to 4, characterized in that: The two actuators are respectively hydraulic cylinders (12).

8. The spray rack lifting system according to any one of claims 1 to 4, characterized in that: The proportional regulating valve (1) is a hydraulic proportional regulating valve.

9. The spray rack lifting system according to claim 8, characterized in that: The proportional control valve (1) is a three-position, four-way hydraulic proportional control valve.

10. A sprayer, characterized in that: It comprises the spray rack lifting system as described in any one of claims 1 to 9.

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