Anti-misoperation device for multi-way valve

Abstract

An anti-misoperation device for a multi-way valve comprises a support, the multi-way valve is installed on the upper portion of the support, and a valve element is movably arranged in the multi-way valve. A multi-connecting-rod structure is further arranged in the middle of the support, the upper end of the multi-connecting-rod structure is connected with the valve element, the lower end of a multi-connecting-rod structure is connected with a pedal, the pedal comprises a fixed section, and one end of the fixed section is hinged to a folding section; the pedal is connected with the valve element of the multi-way valve through the connecting rod structure, meanwhile, the structure of the pedal is improved, the pedal can be folded, a driver can conveniently put the feet on the pedal to extend the legs and feet to have a rest, and accidents can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of excavator technology, and more specifically to a device for preventing misoperation of a multi-way valve. Background Technology

[0002] The hydraulic system of an excavator is an assembly that organically connects various hydraulic components with pipelines according to the transmission requirements of the excavator's working devices and various mechanisms. It mainly includes a hydraulic oil tank, main pump, multi-way valve, various pipelines, and components such as cylinders and motors that perform various actions. Its function is to use hydraulic oil as the working medium, utilize the hydraulic pump to convert the engine's mechanical energy into hydraulic energy and transmit it, and then convert the hydraulic energy back into mechanical energy through hydraulic cylinders and hydraulic motors to realize the various actions of the excavator. The multi-way valve is a combination valve, mainly composed of two or more directional valves. Through modular design, the valve bodies can be combined according to different functional requirements, providing a reliable system solution. The multi-way valve can be combined with various auxiliary valves such as safety valves, overload valves, replenishing valves, flow dividers, brake valves, and check valves to control the movement of multiple actuators.

[0003] When in use, the oil circuit needs to be connected by controlling the valve core through the pedal to achieve various functions. When not in use, the pedal should not be pressed to prevent accidental connection of the oil circuit and unexpected movement. However, the current pedal structure takes up space and is easy to be accidentally pressed during use. Utility Model Content

[0004] One advantage of this invention is that it provides an anti-misoperation device for multi-way valves. The pedal is connected to the valve core of the multi-way valve through a linkage structure. At the same time, the structure of the pedal is improved so that it can be folded. This not only makes it convenient for the driver to place his feet on the pedal to extend his legs and rest, but also effectively prevents accidents.

[0005] To achieve at least one of the above advantages of this utility model, this utility model provides a device for preventing misoperation of a multi-way valve, including a bracket, with a multi-way valve mounted on the upper part of the bracket, and a valve core movably disposed inside the multi-way valve.

[0006] The bracket also has a multi-link structure in the middle. The upper end of the multi-link structure is connected to the valve core, and the lower end of the multi-link is connected to a pedal. The pedal includes a fixed section, and one end of the fixed section is hinged to a folding section.

[0007] According to one embodiment of the present invention, a base is fixedly provided at the lower end of the fixed section, and a shaft is connected to the lower end of the base in the transverse direction. The shaft passes through the bracket and is connected to a first connecting rod. A second connecting rod is hinged to the other end of the first connecting rod, and the upper end of the second connecting rod is hinged to the valve core.

[0008] According to one embodiment of the present invention, a protruding block is provided at the end of the base, and the protruding block is used to limit the rotation angle of the folding section.

[0009] According to one embodiment of the present invention, the upper part of the multi-way valve is provided with two handles.

[0010] According to one embodiment of the present invention, a protective shell is also provided on the outside of the multi-way valve.

[0011] According to one embodiment of the present invention, the extension direction of the first connecting rod is the same as the direction of the base. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0013] Figure 2 This is a schematic diagram of the external structure of Embodiment 1 of the present utility model;

[0014] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0015] In the attached diagram: 1. Handle, 2. Protective shell, 3. Fixed section, 4. First pin, 5. Base, 6. Folding section, 7. Shaft, 8. First connecting rod, 9. Second pin, 10. Second connecting rod, 11. Valve core, 12. Multi-way valve, 13. Bracket. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description will be provided in conjunction with the appendix of this utility model. Figure 1 ~Appendix Figure 3 The present invention will be described in more detail below.

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0019] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0020] This utility model provides a misoperation prevention device for a multi-way valve, including a bracket 13. A multi-way valve 12 is mounted on the upper part of the bracket 13, and a valve core 11 is movably disposed inside the multi-way valve 12. A multi-link structure is also provided in the middle of the bracket 13. The upper end of the multi-link structure is connected to the valve core 11, and the lower end of the multi-link structure is connected to a pedal. The pedal includes a fixed section 3, one end of which is hinged to a folding section 6. A base 5 is fixedly disposed at the lower end of the fixed section 3. A shaft 7 is connected to the lower end of the base 5 in a transverse direction. The shaft 7 passes through the bracket 13 and is connected to a first connecting rod 8. The other end of the first connecting rod 8 is hinged to a second connecting rod 10, the upper end of which is hinged to the valve core 11. A protruding block is provided at the end of the base 5 to limit the rotation angle of the folding section 6. Two handles 1 are provided on the upper part of the multi-way valve 12. A protective shell 2 is also provided on the outside of the multi-way valve 12. The extension direction of the first connecting rod 8 is the same as the direction of the base 5.

[0021] The first embodiment of this utility model is as follows:

[0022] A device for preventing misoperation of a multi-way valve includes a bracket 13. A multi-way valve 12 is mounted on the upper part of the bracket 13. A valve core 11 is movably disposed inside the multi-way valve 12. When the valve core 11 moves upward, the oil circuit inside the multi-way valve 12 is in a connected state. At this time, the handle 1 on the upper part of the multi-way valve 12 controls the switching of different oil circuits to connected or closed states, thereby realizing the function of the multi-way valve 12. When the valve core 11 moves downward, the oil circuit inside the multi-way valve 12 is closed, the multi-way valve 12 cannot work, and the various structures will not move.

[0023] The bracket 13 is also provided with a multi-link structure in the middle. The multi-link includes a shaft 7 that passes through the bracket 13. A bearing is provided between the shaft 7 and the bracket 13. The outer end of the shaft 7 is fixedly connected to the base 5. The base 5 is connected to the fixed section 3 of the pedal. The fixed section 3 extends forward. The inner end of the shaft 7 is fixedly connected to the first link 8. The other end of the first link 8 is hinged to the second link 10 through the second pin 9. The upper end of the second link 10 is hinged to the valve core 11. When the fixed section 3 of the pedal is pressed forward, the first link 8 can be driven to rotate clockwise downward, and the second link 10 can be driven to move downward. At this time, the oil circuit of the multi-way valve 12 is disconnected.

[0024] The rear end of the fixed section 3 is hinged to the folding section 6 via the first pin 4. When in use, the folding section 6 is unfolded to the rear. At this time, the driver's foot can be placed on the fixed section 3 and the folding section 6. Stepping forward will disconnect the oil circuit, and stepping backward will move the second linkage 10 upward, thereby moving the valve core 11 upward and connecting the oil circuit of the multi-way valve 12.

[0025] When not in use, the folding section 6 can be folded forward and to the side. Since there is no longer a force point on the rear side, the driver cannot press the pedal to the rear side, thus preventing the oil circuit from being connected and ensuring that no accidents will occur. At the same time, the driver can relax by placing his foot on the pedal without worrying about accidents.

[0026] The end of the base 5 is provided with a protruding block, which is used to limit the rotation angle of the folding section 6, so that the maximum folding angle of the folding section 6 is limited to the horizontal state, and to provide a force point so that the valve core 11 can be moved when the folding section 6 is stepped on.

[0027] The multi-way valve 12 is also equipped with a protective shell 2 for protection.

[0028] Example 2 Figure 3 The multi-way valve 12 is located below the bracket 13. The bracket 13 and the multi-link structure are similar in specific configuration, but the implementation principle is the same. Both disconnect the oil circuit by pressing the pedal forward and connect the oil circuit by pressing the pedal backward. At the same time, the folding section can be folded forward, and the pedal cannot be pressed backward to ensure that no accident occurs. Different structures based on this principle are all within the protection scope of this utility model.

[0029] It should be noted that the terms "first, second, and third" used in this utility model are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any modifications or variations.

Claims

1. A device for preventing misoperation of a multi-way valve, characterized in that: Includes a bracket, the upper part of which is equipped with a multi-way valve, and the multi-way valve has a valve core that is movably disposed inside; The bracket is also provided with a multi-link structure in the middle. The upper end of the multi-link structure is connected to the valve core, and the lower end of the multi-link is connected to a pedal. The pedal includes a fixed section, and one end of the fixed section is hinged to a folding section.

2. The anti-misoperation device for a multi-way valve according to claim 1, characterized in that: A base is fixedly installed at the lower end of the fixed section, and a shaft is connected to the lower end of the base in the lateral direction. The shaft passes through the bracket and is connected to a first connecting rod. A second connecting rod is hinged to the other end of the first connecting rod, and the upper end of the second connecting rod is hinged to the valve core.

3. The anti-misoperation device for a multi-way valve according to claim 2, characterized in that: The base has a protruding block at its end, which is used to limit the rotation angle of the folded section.

4. The anti-misoperation device for a multi-way valve according to claim 1, characterized in that: The multi-way valve has two handles on its upper part.

5. The anti-misoperation device for a multi-way valve according to claim 1, characterized in that: The multi-way valve is also equipped with a protective shell.

6. The anti-misoperation device for a multi-way valve according to claim 2, characterized in that: The first connecting rod extends in the same direction as the base.

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