Integrated electric control lifter

Abstract

The utility model discloses an integrated electric control lifter, which belongs to the technical field of tractor lifters and comprises a lifter shell, a plurality of lifting control valves and a lifting arm rotatably mounted on the lifter shell through a rotating shaft, a cavity with an opening at the bottom is arranged in the lifter shell, a valve block of each lifting control valve is mounted in the cavity, and the lifting control valves are mounted on the lifting arm. A plurality of oil ports communicated with the inner side and the outer side of the shell are formed in the side wall of the lifter shell; the lifting control valves are connected through pipeline assemblies; the lifting control valves are connected with the oil ports through pipeline assemblies; a feedback mechanism used for measuring the position state of the lifting arm is arranged on the lifter shell, the feedback input end of the feedback mechanism is connected to the end of the rotating shaft and rotates along with the lifting arm, the lifting control valve is matched with the feedback mechanism to achieve various functions of the lifter, and the lifting control valve, the lifter shell and the feedback mechanism are made into a whole. In the whole tractor assembling process, the electric control lifting valve does not need to be installed independently, the whole tractor assembling time is shortened, and the productivity is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tractor lifters, and in particular relates to an integrated electric-controlled lifter. Background Art

[0002] At present, the rear electric lifting systems of various types of tractors are split, that is, the lifting device structure is separated from the electric lifting valve. During the assembly of the tractor, the electric lifting valve needs to be installed separately. In addition, since the electric lifting valve requires multiple valves to be connected through pipeline components, the assembly process is complicated, resulting in a long assembly time and low production efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an integrated electric-controlled lifter, in which a lift control valve is integrated inside a lifter housing. During the assembly of a tractor, the lift control valve no longer needs to be installed separately, thus shortening the assembly time of the whole machine and improving productivity.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] An integrated electric-controlled lifter comprises a lifter housing, a plurality of lift control valves and a lift arm rotatably mounted on the lifter housing via a rotating shaft, wherein a cavity with a bottom opening is arranged in the lifter housing, a valve block of each lift control valve is mounted in the cavity, a plurality of oil ports connecting the inside and outside of the housing are arranged on the side wall of the lifter housing, and each of the lift control valves and the lift control valves and the oil ports are connected via a pipeline assembly; a feedback mechanism for measuring the position state of the lift arm is arranged on the lifter housing, a feedback input end of the feedback mechanism is connected to the end of the rotating shaft and rotates with the lift arm.

[0006] Furthermore, the lift control valve includes a plurality of solenoid valves, and the electromagnets of the solenoid valves extend from the side walls of the lift housing to the outside.

[0007] Furthermore, the lifting control valve includes a pressure compensation valve, a proportional valve, a relief valve, a proportional relief valve and an oil replenishing valve, and the electromagnets of the proportional valve and the proportional relief valve extend from opposite side walls of the lifter housing respectively.

[0008] Furthermore, the proportional valve and the relief valve form a descent control valve group and are integrated into the first valve block; the proportional relief valve and the oil replenishment valve form a downward pressure control valve group and are integrated into the second valve block.

[0009] Furthermore, the lifter also includes an electromagnetic reversing valve installed on the upper end surface of the lifter housing, and the electromagnetic reversing valve is connected to the lift control valve and the oil port through an external pipeline.

[0010] Furthermore, the oil port includes an oil inlet port for connecting to an oil pump, an oil return port for connecting to an oil tank, and two oil ports for connecting to a lifting cylinder.

[0011] Furthermore, the feedback input end is a rotating plate fixed to the axial end face of the rotating shaft, and the feedback mechanism also includes a connecting rod, one end of which is eccentrically connected to the rotating plate and the other end is connected to an angle sensor for transmitting data to the electronic control unit.

[0012] Furthermore, the edge of the rotating plate is provided with a corner portion protruding radially outward, and one end of the connecting rod is rotatably connected to the corner portion.

[0013] Furthermore, a bracket is fixedly provided on the side of the lifter shell, the connecting rod and the angle sensor are installed on the plate surface of the bracket away from one end of the lifter shell side wall, and the other end of the connecting rod and the angle sensor are relatively arranged on both sides of the bracket.

[0014] After adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The integrated electric-controlled lifter of the utility model includes a lifter housing, a plurality of lift control valves and a lift arm rotatably mounted on the lifter housing through a rotating shaft, a cavity with a bottom opening is arranged in the lifter housing, a valve block of each lift control valve is mounted in the cavity, a plurality of oil ports connected to the inside and outside of the housing are arranged on the side wall of the lifter housing, and each lift control valve and the lift control valve and the oil port are connected through a pipeline assembly; a feedback mechanism for measuring the position state of the lift arm is arranged on the lifter housing, a feedback input end of the feedback mechanism is connected to the end of the rotating shaft and rotates with the lift arm, the present application integrates the lift control valve inside the lifter housing, and cooperates with the feedback mechanism to realize the lift, neutral, lowering, floating and other functions of the lifter, and the lift control valve is made into a whole with the lifter housing and the feedback mechanism, and during the assembly process of the tractor, the electric-controlled lift valve no longer needs to be installed separately, which shortens the assembly time of the whole machine and improves productivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the integrated electric control lifter of the utility model;

[0017] Figure 2 yes Figure 1 A side view structural schematic diagram of;

[0018] Figure 3 yes Figure 1 Schematic diagram of the internal structure;

[0019] In the figure, 10-lifter housing, 11-lifting arm, 12-rotating shaft, 13-cavity, 14-oil inlet, 15-oil return port, 16-oil through port, 21-electromagnetic reversing valve, 22-pressure compensation valve, 23-proportional valve, 24-proportional overflow valve, 25-first valve block, 26-second valve block, 27-pipeline assembly, 30-feedback mechanism, 31-rotating plate, 32-corner, 33-connecting rod, 34-angle sensor, 35-bracket. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0021] like Figure 1 As shown, an integrated electric-controlled lifter includes a lifter housing 10, a plurality of lift control valves, and a lift arm 11 rotatably mounted on the lifter housing 10 via a rotating shaft 12. The end of the lift arm 11 away from the lifter housing 10 is connected to a lift cylinder and a pull rod. When the lift cylinder is actuated, the lift arm 11 and the pull rod drive the agricultural implement to be lifted or lowered.

[0022] like Figure 3 As shown, a cavity 13 with a bottom opening is provided in the lift housing 10, and the valve block of each lift control valve is installed in the cavity 13. The side wall of the lift housing 10 is provided with a plurality of oil ports connected to the inside and outside of the housing, and each lift control valve and the oil port are connected through a pipeline assembly 27. The lift control valve is integrated on the lift housing 10 and assembled in advance as a whole, which can effectively shorten the assembly time and improve productivity when the tractor is assembled. In addition, the present application adopts a hidden design, and each lift control valve is installed inside the housing, and the valve block is installed in the lift housing 10, which is not easy to rust, and the leaked hydraulic oil will not leak to the outside, and will not pollute the environment.

[0023] The oil port includes an oil inlet 14 for connecting to an oil pump, an oil return port 15 for connecting to an oil tank, and two oil ports 16 for connecting to a lifting cylinder. The two oil ports 16 are located on opposite side walls of the lifter, respectively, to facilitate connecting pipelines. The hydraulic oil enters the lifter through the oil inlet 14, and after the flow and pressure are adjusted by multiple lift control valves, it flows to the lifting cylinder through the oil port 16, driving the lifting cylinder to rise and fall, thereby realizing the functions of the lifter such as lifting, neutralization, lowering, and floating.

[0024] like Figure 1 and Figure 2As shown together, the lifting control valve includes a plurality of solenoid valves, and the electromagnets of the solenoid valves extend from the side walls of the lift housing 10 to the outside. The electromagnets extend outside the housing for easy wiring. Specifically, the lifting control valve includes electronically controlled and non-electronically controlled valves such as a pressure compensation valve 22, a proportional valve 23, a relief valve, a proportional relief valve 24, and an oil replenishment valve. The electromagnets of the proportional valve 23 and the proportional relief valve 24 extend from the opposite side walls of the lift housing 10 respectively to avoid interference between wiring.

[0025] like Figure 3 As shown, the proportional valve 23 and the relief valve form a descent control valve group, which is integrated into the first valve block 25; the proportional relief valve 24 and the oil replenishing valve form a down pressure control valve group, which is integrated into the second valve block 26, and the oil replenishing valve is specifically a one-way valve. The descent control valve group and the down pressure control valve group are valve group structures commonly used in lifters. After being integrated into an integrated valve group, it is convenient to use and install each lifter, and can reduce the assembly time of the lifter.

[0026] like Figure 1 As shown, the lifter also includes an electromagnetic reversing valve 21 installed on the upper end surface of the lifter housing 10, and the electromagnetic reversing valve 21 is connected to the lift control valve and the oil port through an external pipeline. The electromagnetic reversing valve 21 has a high action frequency during the operation of the lifter and is more prone to failure than other valves. Therefore, installing it outside the lifter housing 10 is conducive to subsequent maintenance and replacement, and there is no need to disassemble the entire lifter, saving time and effort.

[0027] like Figure 1 and Figure 3 As shown together, a feedback mechanism 30 for measuring the position state of the lifting arm 11 is provided on the lift housing 10, and the feedback input end of the feedback mechanism 30 is connected to the end of the rotating shaft 12 and rotates with the lifting arm 11. The feedback mechanism 30 provides real-time feedback, and ensures that the lifting action of the lifter is accurate and timely by controlling the input current of the electromagnet of the proportional valve 23 and the proportional relief valve 24.

[0028] Specifically, the feedback input end is a rotating plate 31 fixed to the axial end surface of the rotating shaft 12, and the feedback mechanism 30 also includes a connecting rod 33, one end of the connecting rod 33 is eccentrically connected to the rotating plate 31, and the other end is connected to an angle sensor 34 for transmitting data to the electronic control unit. The edge of the rotating plate 31 is provided with a corner portion 32 protruding outward in the radial direction, and one end of the connecting rod 33 is rotatably connected to the corner portion 32. The detection value of the angle sensor 34 corresponds to the rotation angle of the lifting arm 11, so the corresponding lifting height of the lifting cylinder and the agricultural implement can be converted through the detection value.

[0029] A bracket 35 is fixedly provided on the side of the lift housing 10, and the connecting rod 33 and the angle sensor 34 are installed on the plate surface of the bracket 35 away from one end of the side wall of the lift housing 10, and the other end of the connecting rod 33 and the angle sensor 34 are arranged oppositely on both sides of the bracket 35. The bracket 35 can support and fix the connecting rod 33 and the angle sensor 34, and when away from the lift housing 10, it can avoid interference with pipelines and wiring.

[0030] The integrated electric-controlled lifter of the utility model installs each lift control valve in the cavity of the lifter housing. The lift control valve cooperates with a feedback mechanism for measuring the position state of the lift arm to realize the lifter's lifting, neutral, lowering, floating and other functions. The lift control valve is made into a whole with the lifter housing and the feedback mechanism. During the assembly of the tractor, it is no longer necessary to install it separately, which shortens the assembly time of the whole machine and improves productivity.

[0031] In the description of this specification, the word description such as "several" means one or more. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0032] In the description of this specification, unless otherwise clearly defined, words such as "setting", "installation", and "connection" should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above words in this utility model based on the specific content of the technical solution.

[0033] Although the specific implementation methods of the utility model are described above, those skilled in the art should understand that the described embodiments are only part of the implementation methods of the utility model, rather than all the implementation methods, which are only examples, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various changes or modifications to these implementation methods without departing from the principle and essence of the utility model and without any creative work, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. An integrated electric control lifter, comprising a lifter housing, a plurality of lift control valves and a lift arm rotatably mounted on the lifter housing via a rotating shaft, characterized in that: A cavity with a bottom opening is provided in the lift housing, a valve block of each lift control valve is installed in the cavity, a side wall of the lift housing is provided with a plurality of oil ports communicating with both sides of the housing, and each lift control valve and the lift control valve and the oil ports are connected via a pipeline assembly; The lifter housing is provided with a feedback mechanism for measuring the position state of the lift arm. The feedback input end of the feedback mechanism is connected to the end of the rotating shaft and rotates with the lift arm.

2. The integrated electric control lifter according to claim 1, characterized in that: The lift control valve comprises a plurality of solenoid valves, and the electromagnets of the solenoid valves extend outward from the side wall of the lift housing.

3. The integrated electric control lifter according to claim 2, characterized in that: The lifting control valve comprises a pressure compensation valve, a proportional valve, a relief valve, a proportional relief valve and an oil replenishing valve. The electromagnets of the proportional valve and the proportional relief valve extend from opposite side walls of the lifter housing respectively.

4. The integrated electric control lifter according to claim 3, characterized in that: The proportional valve and the relief valve form a descending control valve group and are integrated into the first valve block; the proportional relief valve and the oil replenishing valve form a downward pressure control valve group and are integrated into the second valve block.

5. The integrated electric control lifter according to claim 1, characterized in that: The lifter further comprises an electromagnetic reversing valve mounted on the upper end surface of the lifter housing, and the electromagnetic reversing valve is connected to the lift control valve and the oil port through an external pipeline.

6. The integrated electric control lifter according to claim 1, characterized in that: The oil port comprises an oil inlet port for connecting to an oil pump, an oil return port for connecting to an oil tank, and two oil ports for connecting to a lifting cylinder.

7. The integrated electric control lifter according to any one of claims 1 to 6, characterized in that: The feedback input end is a rotating plate fixed to the axial end face of the rotating shaft. The feedback mechanism also includes a connecting rod, one end of which is eccentrically connected to the rotating plate and the other end is connected to an angle sensor for transmitting data to an electronic control unit.

8. The integrated electric control lifter according to claim 7, characterized in that: The edge of the rotating plate is provided with a corner portion protruding radially outward, and one end of the connecting rod is rotatably connected to the corner portion.

9. The integrated electric control lifter according to claim 7, characterized in that: A bracket is fixedly provided on the side of the lifter housing, the connecting rod and the angle sensor are installed on a plate surface of the bracket away from one end of the lifter housing side wall, and the other end of the connecting rod and the angle sensor are arranged on both sides of the bracket opposite to each other.

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