Excavator hydraulic control valve capable of being controlled remotely

Abstract

The utility model discloses an excavator hydraulic control valve capable of being controlled remotely, and relates to the technical field of hydraulic control valves. Comprising a driving motor, a speed reducing mechanism, a transmission mechanism, an adjusting control mechanism, a protection assembly and a hydraulic valve, the driving motor, the speed reducing mechanism, the transmission mechanism, the adjusting control mechanism and the hydraulic valve are connected in sequence, the protection assembly is arranged at the side end of the driving motor, and the protection assembly comprises a side cover, external holes, a partition plate, an internal hole, a baffle and a discharge outlet; the external holes horizontally correspond to the partition plate, the internal holes and the external holes in the partition plate are arranged in a staggered mode, a discharge outlet is formed in the side end of the side cover in a penetrating mode, and a baffle is arranged on the inner side of the partition plate. The protection assembly is arranged, and the internal holes and the external holes in the protection assembly are arranged in a staggered mode, so that even if liquid enters the interior from the external holes, the liquid can be blocked by the partition plate and then flows out of the discharge outlet downwards along the side wall of the partition plate; when the accumulated water is too much, the baffle plate can prevent the accumulated water from permeating into the core area of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic control valves, in particular to a remotely controlled hydraulic control valve for an excavator. Background Art

[0002] At present, various types of hydraulic valves on the market, including pressure control valves and flow control valves, are all manually adjusted except for proportional solenoid adjustment. The adjustment screw is manually turned to push the push rod, and the push rod compresses the spring, so that the hydraulic valve core has a certain opening pressure; or the push rod directly drives the hydraulic valve core to move, and the flow rate of the hydraulic valve is controlled by changing the area of ​​the flow window of the valve core. It is impossible to achieve remote automatic adjustment of hydraulic valves through manual adjustment. Utility Model Content

[0003] The utility model provides a remotely controllable hydraulic control valve for an excavator, which overcomes the shortcomings described in the background technology.

[0004] The technical solution adopted by the utility model to solve its technical problem is:

[0005] A remotely controllable hydraulic control valve for an excavator comprises a drive motor, a reduction mechanism, a transmission mechanism, an adjustment control mechanism, a protective component and a hydraulic valve. The drive motor, the reduction mechanism, the transmission mechanism, the adjustment control mechanism and the hydraulic valve are connected in sequence. A protective component is arranged at the side end of the drive motor. The protective component comprises a side cover, an external hole, a partition plate, an internal hole, a baffle plate and a discharge port. The side cover is detachably connected to the drive motor. A plurality of external holes are arranged on the side cover. The external holes correspond horizontally to the partition plate, and the internal holes and the external holes on the partition plate are staggered. A discharge port is arranged through the side end of the side cover. A baffle plate is arranged on the inner side of the partition plate, and the height of the baffle plate is at least five centimeters. A control box for receiving remote control signals is arranged on the drive motor. An antenna is connected to the control box. The antenna is convenient for improving the signal reception effect.

[0006] A preferred technical solution: a convex block is arranged on the inner end of the side cover, a connecting recess is arranged at the corresponding position of the driving motor, and the convex block matches the connecting recess.

[0007] A preferred technical solution: The excavator hydraulic control valve also includes a sensor, and the sensor includes a linear displacement sensor, an angular displacement sensor or a pressure sensor.

[0008] A preferred technical solution: the transmission mechanism is a cam transmission mechanism, including a transmission gear, a first cam, and a second cam. The sensor is arranged above the second cam. The transmission gear is meshed with the output gear of the reduction mechanism. The first cam is arranged on the rotating shaft of the transmission gear.

[0009] A preferred technical solution: at least one discharge port is provided, and the through direction of the discharge port is perpendicular to the through direction of the external hole.

[0010] A preferred technical solution: the baffle is made of copper.

[0011] A preferred technical solution: the external hole on the side cover is installed in a ring shape.

[0012] By adopting the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model provides a protective component in which internal holes and external holes are staggered, so that even if liquid enters the interior from the external hole, it will be blocked by the partition and then flow out from the discharge port downward along the side wall; when there is a lot of water accumulation, the baffle can also prevent it from penetrating into the core area of ​​the motor (the area where the motor stator winding and the rotor are located); the drive motor usually has a fan body at the outer end to transfer the heat in the motor, and sufficient gas channels are reserved between the partition and the side cover to discharge the gas outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0017] Figure 3 It is a structural schematic diagram of another hydraulic control valve.

[0018] Description of main reference numerals:

[0019] 1. Driving motor; 2. Speed ​​reduction mechanism; 3. Sensor; 4. Transmission mechanism; 41. Transmission gear; 42. First cam; 43. Second cam; 44. Sliding gear; 45. Adjusting screw; 5. Position detection switch; 6. Adjusting control mechanism; 61. Push rod; 62. Spring; 63. Cone valve seat; 7. Hydraulic valve; 9. Protective assembly; 90. Side cover; 91. External hole; 92. Spacer; 93. Baffle; 94. Discharge port; 95. Built-in hole; 96. Bump. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 3As shown, the present embodiment provides a remotely controllable hydraulic control valve for an excavator, comprising a drive motor 1, a reduction mechanism 2, a transmission mechanism 4, an adjustment control mechanism 6, a protection component 9, and a hydraulic valve 7. The drive motor 1, the reduction mechanism 2, the transmission mechanism 4, the adjustment control mechanism 6, and the hydraulic valve 7 are connected in sequence. A protection component 9 is arranged at the side end of the drive motor 1. The protection component 9 comprises a side cover 90, an external hole 91, a partition plate 92, an internal hole 95, a baffle 93, and a discharge port 94. The side cover 90 is detachably connected to the drive motor 1. A plurality of external holes 91 are arranged on the side cover 90. The external holes 91 correspond horizontally to the partition plate 92, and the internal holes 95 on the partition plate 92 are staggered with the external holes 91. A discharge port 94 is arranged through the side end of the side cover 90. A baffle 93 is arranged on the inner side of the partition plate 92, and the height of the baffle 93 is at least five centimeters. A control box for receiving a remote control signal is arranged on the drive motor 1, and an antenna is connected to the control box.

[0021] The drive motor 1 is used to provide a power source for the hydraulic control valve of the excavator, the reduction mechanism 2 is used to adjust the output of the drive motor 1 to a suitable speed output, the conventional mechanism is used to convert the rotary motion output by the reduction mechanism 2 into linear motion, and the adjustment control mechanism 6 is used to adjust the working condition of the valve core of the hydraulic control valve of the excavator under the linear motion of the transmission mechanism 4. The drive motor 1 can be a DC motor, an AC motor, etc.

[0022] Taking the remotely controllable excavator hydraulic control valve in this embodiment as an example, its principle is: a drive motor 1 is adjusted by a reduction mechanism 2 to output a suitable speed, and then the transmission mechanism 4 is used to convert the rotational motion into linear motion, and then the adjustment control mechanism 6 is driven to adjust the excavator hydraulic control valve. The excavator hydraulic control valve is adjusted by controlling the forward and reverse rotation of the drive motor 1, so the excavator hydraulic control valve can be accurately adjusted; by issuing a motor control command at the remote end, the excavator hydraulic control valve can be remotely controlled.

[0023] Based on the above principle, the power source of the hydraulic control valve of the excavator comes from the drive motor 1. In order to ensure its life and reduce the adverse effects of the external environment or use on the drive motor 1 after the hydraulic control valve is installed on the excavator, a protective component 9 is set. The impact of the external environment mostly refers to liquid (rainwater), and the impact during use mostly refers to heat dissipation. The side cover 90 is staggered with built-in holes 95 and external holes 91, so that even if the liquid enters the interior from the external hole 91, it will be blocked by the partition, and then flow down along its side wall from the discharge port 94; when there is a lot of water accumulation, the baffle 93 can also prevent it from penetrating into the core area of ​​the motor (the area where the motor stator winding and rotor are located). The drive motor 1 is usually provided with a fan body at the outer end to transfer the heat in the motor, and sufficient gas channels are reserved between the partition and the side cover 90 to discharge it outward.

[0024] Furthermore, a protrusion 96 is provided on the inner end of the side cover 90 , and a connecting recess is provided at a corresponding position of the driving motor 1 , and the protrusion 96 matches the connecting recess.

[0025] Furthermore, the excavator hydraulic control valve also includes a sensor 3, and the sensor 3 includes a linear displacement sensor, an angular displacement sensor or a pressure sensor.

[0026] Furthermore, the transmission mechanism 4 is a cam transmission mechanism 4, including a transmission gear 41, a first cam 42, and a second cam 43. The sensor 3 is arranged above the second cam 43. The transmission gear 41 is meshed with the output gear of the reduction mechanism 2. The first cam 42 is arranged on the rotating shaft of the transmission gear 41.

[0027] Furthermore, at least one discharge port 94 is provided, and a penetration direction of the discharge port 94 is perpendicular to a penetration direction of the external hole 91 .

[0028] Furthermore, the baffle 93 is made of copper.

[0029] Furthermore, the external hole 91 on the side cover 90 is installed in a ring shape.

[0030] The hydraulic valve 7 is a pressure control valve. The working conditions of the valve core of the hydraulic valve 7 are adjusted as follows: the linear motion output by the transmission mechanism 4 compresses the spring 62 that supports the valve core. The compression distance of the spring 62 determines the pressure on the valve core of the hydraulic valve 7, that is, the opening pressure of the valve core determined by the linear motion distance output by the transmission mechanism 4. When the pressure of the liquid on the valve core is greater than the opening pressure, the hydraulic valve 7 is actuated.

[0031] The hydraulic control valve of the excavator also includes a position detection switch 5 for detecting the limit position of the hydraulic valve 7. The specific position of the position detection switch 5 is not specifically limited. The position detection switch 5 can be set in the transmission mechanism 4 or in the adjustment control structure, so that when the linear motion output by the transmission mechanism 4 reaches the limit position, the output signal controls the drive motor 1 to stop rotating. This can avoid damage to the transmission mechanism 4 and the drive motor 1 due to the forced operation of the drive motor 1 when the transmission mechanism 4 reaches the limit retraction position.

[0032] The hydraulic control valve of the excavator also includes a sensor 3 for real-time detection of the adjustment output value of the hydraulic valve 7. The sensor 3 can be a linear displacement sensor, an angular displacement sensor or a pressure sensor. The position of the sensor 3 is also not specifically limited. The sensor 3 can directly or indirectly detect the linear motion distance output by the transmission mechanism 4 and output the corresponding voltage value. If the hydraulic valve 7 is calibrated, that is, the curve relationship between the adjustment pressure or adjustment flow of the hydraulic valve 7 and the voltage value output by the sensor 3, when the adjustment pressure or adjustment flow of the hydraulic valve 7 needs to be quantitatively controlled, it is only necessary to determine the corresponding voltage value according to the curve relationship, and then control the rotation of the drive motor 1 so that the sensor 3 outputs the voltage value. In addition, the sensor 3 and the electric adjustment hydraulic valve 7 can also form a closed-loop control system, and the hydraulic valve 7 can be automatically controlled or intelligently controlled through intelligent control elements (PLC, counter, etc.).

[0033] As a connection method, the drive motor 1, the reduction mechanism 2 and the transmission mechanism 4 are connected by screws, the hydraulic valve 7 and the adjustment control mechanism 6 are connected by screws, and then the adjustment control mechanism 6 and the transmission mechanism 4 are connected by screws. The position detection element is fixed according to the structural requirements. As a preferred embodiment, the sensor element is generally installed in a threaded manner and can be directly screwed on.

[0034] As another specific structure of the transmission mechanism 4, the transmission mechanism 4 is a screw transmission mechanism 4, including a sliding gear 44 matched with the output gear of the reduction mechanism 2, and the sliding gear 44 moves along the axial direction of the output gear under the rotation of the output gear of the reduction mechanism 2. The sliding gear 44 is fixedly connected with an adjusting screw 45, and a position detection switch 5 is provided under the adjusting screw 45. When the limit position of the hydraulic valve 7 is detected, a control signal is sent to control the driving motor 1 to stop rotating.

[0035] When the transmission mechanism 4 is a cam transmission mechanism 4 , the core principle is: the push rod 61 in the regulating control mechanism 6 is pushed out gradually, the spring 62 under the push rod 61 is compressed, a certain pressure is generated on the valve core, and the valve core presses against the cone valve seat 63 .

[0036] The above are only preferred embodiments of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A remotely controlled hydraulic control valve for excavators. It is characterized in that It includes a driving motor, a reduction mechanism, a transmission mechanism, an adjustment and control mechanism, a protective component, and a hydraulic valve, which are connected in sequence. A protective component is arranged at the side end of the driving motor, and the protective component includes a side cover, an external hole, a partition plate, an internal hole, a baffle plate, and a discharge port. The side cover is detachably connected to the driving motor. A plurality of external holes are arranged on the side cover, and the external holes correspond horizontally to the partition plate, and the internal holes and the external holes on the partition plate are staggered. A discharge port is arranged through the side end of the side cover, and a baffle plate is arranged on the inner side of the partition plate, and the height of the baffle plate is at least five centimeters. A control box for receiving remote control signals is arranged on the driving motor, and an antenna is connected to the control box.

2. The remotely controllable hydraulic control valve for excavators according to claim 1, It is characterized in that A convex block is arranged on the inner side end of the side cover, and a connecting recess is arranged at a corresponding position of the driving motor, and the convex block matches the connecting recess.

3. The remotely controllable hydraulic control valve for excavators according to claim 2, It is characterized in that The excavator hydraulic control valve further comprises a sensor, and the sensor comprises a linear displacement sensor, an angular displacement sensor or a pressure sensor.

4. The remotely controllable hydraulic control valve for excavators according to claim 3, It is characterized in that The transmission mechanism is a cam transmission mechanism, including a transmission gear, a first cam, and a second cam. The sensor is arranged above the second cam. The transmission gear is meshed with an output gear of a reduction mechanism. The first cam is arranged on the rotating shaft of the transmission gear.

5. The remotely controllable hydraulic control valve for excavators according to claim 1, It is characterized in that At least one discharge port is provided, and the through direction of the discharge port is perpendicular to the through direction of the external hole.

6. The remotely controllable hydraulic control valve for excavators according to claim 1, It is characterized in that The baffle is made of copper.

7. The remotely controllable hydraulic control valve for excavators according to claim 1, It is characterized in that The external hole on the side cover is installed in a ring shape.

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