Hydraulic pilot handle with intelligent direction identification and control functions for crane

Abstract

A hydraulic pilot handle used for a crane and capable of intelligently recognizing and controlling the direction comprises a handle assembly, the handle assembly is connected with a valve body through a universal shaft, the valve body is provided with a plurality of valve rod assemblies, each valve rod assembly corresponds to the movement direction of the handle assembly, a circular cam is arranged above the valve rod assemblies and connected with the handle assembly, and the valve rod assemblies are connected with the circular cam. The valve rod assembly is connected with a pressure sensor, and the pressure sensor is connected with the system controller. According to the hydraulic pilot handle with the intelligent control direction recognition function for the crane, the pressure sensor is arranged at each valve rod assembly, the valve rod assemblies in which direction act are detected through the pressure sensors, and therefore the specific control direction of handle operation is detected; the function of recognizing the specific control direction of handle operation by converting mechanical pressure generated by handle action into corresponding electric output signals is achieved, the structure is compact, cost is low, and reliability is high.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, in particular to a hydraulic pilot handle with intelligent identification and control direction for a crane. Background Art

[0002] The intelligence of construction machinery is making great strides forward. Advanced cranes have high levels of safety monitoring and energy saving. Intelligent cranes are highly flexible automatic mechanical systems with automatic control operation and motion functions, editable functions, human-machine interaction functions and self-diagnosis functions, which can perform various tasks of cranes. At present, the technical route and control method are mature, but due to the high price of control components, small and medium-tonnage crane models have not been applied in batches.

[0003] In the prior art, hydraulic oil circuit switching is achieved through a handle, a connecting rod, a circular cam, a universal shaft, a plurality of hydraulic rods, a pilot valve body and a clamping plate, but the specific direction of the oil circuit switching cannot be identified.

[0004] The hydraulic handle is a device that controls the hydraulic system. It controls the operation of the hydraulic system by changing the on and off of the oil circuit. The hydraulic pilot handle usually consists of a handle, a pilot valve and a control rod. There are some buttons, switches or knobs on the handle. By operating these buttons, switches or knobs, the working state of the pilot valve can be changed, thereby realizing the control of the hydraulic system. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a hydraulic pilot handle with intelligent identification and control direction for cranes which has a simple structure and good effects.

[0006] The present invention is implemented with the following technical scheme: a hydraulic pilot handle with intelligent identification of control direction for cranes, comprising a handle assembly, wherein the lower part of the handle assembly is connected to a valve body via a universal shaft, a plurality of valve stem assemblies are arranged on the valve body, each valve stem assembly corresponds to the movement direction of the handle assembly, a circular cam is arranged above the valve stem assembly, the circular cam is connected to the handle assembly, the valve stem assembly is connected to a pressure sensor, and the pressure sensor is connected to a system controller.

[0007] It is further provided that: the handle assembly is connected with the universal shaft through threads.

[0008] The valve stem assembly is connected to the valve body through a clamping plate assembly.

[0009] The clamping plate assembly is provided with a valve stem hole, and the spherical structure on the top of the valve stem assembly extends above the clamping plate assembly and contacts the circular cam.

[0010] The valve body is provided with four groups of valve stem assemblies, which respectively correspond to the movements of the handle assembly in four directions: front, back, left, and right.

[0011] The pressure sensor is mounted on the clamping plate assembly, and a detection element of the pressure sensor is connected to the spherical structure at the top of the valve stem assembly.

[0012] The valve body is provided with a working oil port and a pressure oil port, and each set of valve stem components is connected to the working oil port and the pressure oil port.

[0013] The present invention has the following advantages: the hydraulic pilot handle with intelligent identification of control direction for the crane of the present invention is provided with a pressure sensor at each valve stem assembly, and the pressure sensor is used to detect the direction in which the valve stem assembly moves, thereby detecting the specific control direction of the handle operation, and realizing the function of identifying the specific control direction of the handle operation by converting the mechanical pressure generated by the handle action into a corresponding electrical output signal, and has a compact structure, low cost and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0015] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the component structure of the present invention; Figure 3 It is the hydraulic principle diagram of the present invention.

[0016] In the figure: 1. handle assembly, 2. universal shaft, 3. circular cam, 4. clamping plate assembly, 5. valve stem assembly, 6. valve body, 7. pressure sensor.

[0017] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0019] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 to Figure 2 A hydraulic pilot handle with intelligent identification of control direction for a crane shown in the figure includes a handle assembly 1, a valve body 6 is connected to the bottom of the handle assembly 1 through a universal shaft 2, a plurality of valve stem assemblies 5 are arranged on the valve body 6, each valve stem assembly 5 corresponds to the movement direction of the handle assembly 1, a circular cam 3 is arranged above the valve stem assembly 5, the circular cam 3 is connected to the handle assembly 1, the valve stem assembly 5 is connected to a pressure sensor 7, and the pressure sensor 7 is connected to the system controller. The hydraulic pilot handle with intelligent identification of control direction for the crane of the present invention comprises a handle assembly, a circular cam, a universal shaft, a valve body, a valve stem assembly and a pressure sensor. The universal shaft is connected to the handle assembly and placed above the valve body. A circular cam is also provided above the universal shaft. The circular cam is connected to the handle assembly. The valve stem assembly is provided on the valve body. The upper part of the valve stem assembly contacts the circular cam. The handle assembly drives the circular cam to move. The circular cam moves up and down to drive the valve stem assembly to move in the valve body, thereby realizing the opening and closing of the oil circuit. The valve stem assembly is connected to a pressure sensor. The pressure sensor can judge the movement of the handle by detecting the mechanical pressure generated by the valve stem assembly, and convert the movement of the handle into a corresponding electrical signal to be transmitted to the system controller, thereby realizing the controller's identification of the specific control direction of the handle operation.

[0022] like Figure 1 to Figure 2 The hydraulic pilot handle with intelligent identification and control direction for a crane shown in the figure, the handle assembly 1 is connected to the universal shaft 2 through threads. The hydraulic pilot handle with intelligent identification and control direction for a crane of the present invention, the handle assembly is connected to the universal shaft through threads, and the rotation of the handle assembly is realized through the universal shaft.

[0023] like Figure 1 to Figure 2A hydraulic pilot handle with intelligent identification and control direction for a crane is shown, and the valve stem assembly 5 is connected to the valve body 6 through the clamping plate assembly 4. The clamping plate assembly 4 is provided with a valve stem hole, and the spherical structure at the top of the valve stem assembly 5 extends above the clamping plate assembly 4 and contacts the circular cam 3. In the hydraulic pilot handle with intelligent identification and control direction for a crane of the present invention, the clamping plate assembly is installed on the upper part of the valve body to limit the movement position of the valve stem assembly, the valve stem assembly is placed inside the valve body, and through the valve stem hole reserved in the clamping plate assembly, the spherical structure at the top of the valve stem assembly is extended above the clamping plate assembly and contacts the circular cam, and the valve stem assembly is driven to move through the circular cam to realize the opening and closing of the oil circuits in all directions.

[0024] like Figure 1 to Figure 2 The hydraulic pilot handle with intelligent identification and control direction for a crane shown in the figure has four valve stem assemblies 5 arranged in the valve body 6, corresponding to the four directions of movement of the handle assembly 1, front, back, left, and right. The valve body of the present invention has four valve stem assemblies arranged in the valve body, corresponding to the four directions of movement of the handle assembly.

[0025] like Figure 1 to Figure 2 In the hydraulic pilot handle with intelligent identification of control direction for crane shown in the figure, the pressure sensor 7 is installed on the clamping plate assembly 4, and the detection element of the pressure sensor 7 is connected to the spherical structure at the top of the valve stem assembly 5. In the hydraulic pilot handle with intelligent identification of control direction for crane of the present invention, the pressure sensor includes a connecting part and a detecting part, and the connecting part of the pressure sensor is connected to the spherical structure at the top of the valve stem assembly. When the valve stem assembly moves, the spherical structure at the top of the valve stem assembly drives the connecting part of the pressure sensor to move, and the detecting part of the pressure sensor receives the signal and transmits it to the system controller to identify the movement direction of the handle.

[0026] like Figure 3 A hydraulic pilot handle with intelligent identification and control direction for a crane is shown, and the valve body 6 is provided with a working oil port and a pressure oil port, and each group of valve stem assemblies 5 connects the working oil port and the pressure oil port. The hydraulic pilot handle with intelligent identification and control direction for a crane of the present invention is provided with a pressure oil port and four working oil ports in the valve body, and the four working oil ports correspond to the four movement directions of the handle respectively. The valve stem assembly connects the working oil port and the pressure oil port in the valve body, and the connection and closing of the working oil port and the pressure oil port are realized through the movement of the valve stem assembly in the valve body. Specifically, after the valve stem assembly moves downward, the high-pressure P oil circuit in the valve body is connected to the corresponding working port (A or B or C or D), and the high-pressure oil flows to the corresponding working port, so that the actuator performs corresponding actions.

[0027] The hydraulic pilot handle with intelligent identification of control direction used for the crane of the present invention, when in use, when the crane needs to move, the operator bends the handle in the direction corresponding to the action, the handle assembly moves with the circular cam, the circular cam presses down the valve stem assembly in the corresponding direction, the movement of the valve stem assembly triggers the detection element of the pressure sensor, the pressure sensor converts the input mechanical pressure into an electrical output signal, the specific control direction of the handle operation can be judged through the electrical signals of the four pressure sensors, and the specific control direction of the handle operation can be identified, the structure is compact, the cost is low, and the reliability is high.

[0028] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0029] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0030] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A hydraulic pilot handle with intelligent identification and control direction for a crane, characterized in that: The invention comprises a handle assembly (1), wherein the handle assembly (1) is connected to a valve body (6) via a universal shaft (2) at its lower part, a plurality of valve stem assemblies (5) are arranged on the valve body (6), each valve stem assembly (5) corresponds to the movement direction of the handle assembly (1), a circular cam (3) is arranged above the valve stem assembly (5), the circular cam (3) is connected to the handle assembly (1), the valve stem assembly (5) is connected to a pressure sensor (7), and the pressure sensor (7) is connected to a system controller.

2. A hydraulic pilot handle with intelligent identification and control direction for a crane as claimed in claim 1, characterized in that: The handle assembly (1) and the universal shaft (2) are connected together via threads.

3. A hydraulic pilot handle with intelligent identification and control direction for a crane as claimed in claim 1, characterized in that: The valve stem assembly (5) is connected to the valve body (6) via a clamping plate assembly (4).

4. A hydraulic pilot handle with intelligent identification and control direction for a crane as claimed in claim 3, characterized in that: The clamping plate assembly (4) is provided with a valve stem hole, and the spherical structure at the top of the valve stem assembly (5) extends above the clamping plate assembly (4) and contacts the circular cam (3).

5. A hydraulic pilot handle with intelligent identification and control direction for a crane as claimed in claim 1, characterized in that: Four groups of valve stem assemblies (5) are arranged in the valve body (6), corresponding to the movements of the handle assembly (1) in four directions: front, back, left, and right.

6. A hydraulic pilot handle with intelligent identification and control direction for a crane as claimed in claim 1, characterized in that: The pressure sensor (7) is mounted on the clamping plate assembly (4), and a detection element of the pressure sensor (7) is connected to the spherical structure at the top of the valve stem assembly (5).

7. A hydraulic pilot handle with intelligent identification and control direction for a crane as claimed in claim 1, characterized in that: The valve body (6) is provided with a working oil port and a pressure oil port, and each set of valve stem components (5) is connected to the working oil port and the pressure oil port.

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