KR19990041899U - Heavy-duty engine accelerator pedal lock - Google Patents

Abstract

The engine speed can be easily fixed at a predetermined predetermined speed by using a hydraulic valve that controls the flow direction of the hydraulic oil discharged from the master cylinder according to the pressurization of the accelerator pedal.

According to a preferred embodiment, an accelerator pedal rotatably mounted at a predetermined position of a vehicle body, a first link one end of which is hinged to the accelerator pedal and interlocked when the accelerator pedal is pressed, and one end of which is hinged to the first link other end And a second link, one end of which is hinged to the other end of the second link and the other end of which is rotatably fixed to the vehicle body predetermined position, and one end of which is hinged to the middle of the third link, so that the linear movement is performed when the accelerator pedal is pressed. A first hydraulic cylinder which is connected to the rod and the other end of the rod to generate a predetermined operating pressure when the power is transmitted due to the accelerator pedal pressurization, and is connected to the first hydraulic cylinder and discharged from the first hydraulic cylinder A second hydraulic cylinder which drives in accordance with pressure to adjust the opening and closing angle of the throttle lever, and is installed in a flow path between the first hydraulic cylinder and the second hydraulic cylinder, It is provided with an engine accelerator pedal fixing device for controlling the flow direction, and is provided with a hydraulic valve for switching the pressure by the user to fix the engine speed to a set speed of the predetermined range.

Therefore, by using a hydraulic valve that controls the flow direction of the hydraulic oil discharged from the master cylinder according to the pressurization of the accelerator pedal, the structure of the device for easily fixing the engine speed to a predetermined predetermined speed by simplifying the installation cost and It has the advantage of reducing the after-sales cost and providing convenience to the user by the easy operation of the fixing device.

Description

Heavy-duty engine accelerator pedal lock

The present invention relates to an engine accelerator pedal fixing device for heavy equipment, and more specifically, by using a hydraulic valve for controlling the flow direction of the hydraulic oil discharged from the master cylinder (Master cylinder) according to the pressure of the accelerator pedal (Accelerator Pedal) The present invention relates to an engine accelerator pedal fixing device for making it easy to fix an engine speed at a predetermined predetermined speed.

As schematically shown in Figure 1, the engine accelerator pedal fixing device for heavy equipment according to the prior art, the accelerator pedal is fixed to a predetermined position of the vehicle body and operates within a predetermined angle (within 55 °) in accordance with the pressing force by the user ( 1) and a plurality of link members 2 which are hinged and fixed so as to be interlocked with the accelerator pedal 1 so as to be linked with each other during the operation of the accelerator pedal 1 to perform a predetermined mechanical link movement, and the link member 2 is once And a master cylinder (3) connected to the unit and generating a working pressure of a predetermined pressure when power is transmitted through the link member (2) due to the pressure of the accelerator pedal (1), and through the wire (4) to the master cylinder (3). It is connected and is configured with an accelerator pedal rocker (5) for fixing the engine speed not shown in accordance with the operating pressure discharged from the master cylinder (3) in a predetermined range.

The engine accelerator pedal fixing device according to the related art, which is configured as described above, has a first link 6 integrally connected to the accelerator pedal 1 when the accelerator pedal 1 is pressurized to a predetermined pressure by a user's foot. Is rotated in a clockwise direction in the drawing, the second link 7 having one end pivotably connected to the first link 6 is horizontally moved in the left direction on the drawing, and the one end pivoting with the second link 7. The third link 8, which is connected to the other end and hinged to the vehicle body at a predetermined position, is rotated counterclockwise in the drawing with the lower end as a pivot point, and the third link 8 is pivotable. The rods 9 connected to each other are horizontally moved in the left direction on the drawing.

Due to this, as the rod 9 moves to drive the piston rod not shown in the master cylinder 3, the operating pressure generated from the master cylinder 3 is transmitted through the wire 4 to the accelerator pedal rocker 5. Is delivered).

Therefore, in order to fix the engine speed to the set speed in the predetermined range, the accelerator pedal is used by the user's hand when the power is transmitted to the accelerator pedal rocker 5 by the power transmitted when the accelerator pedal 1 is pressurized to a predetermined pressure. By adjusting the rocker 5, it is possible to fix the engine speed at a set speed.

However, when fixing the engine speed at the set speed as described above, by pressing the accelerator pedal 1 by the user's foot and at the same time by adjusting the accelerator pedal rocker 5 using the user's hand, The user had to take the inconvenience when fixing the engine speed to a predetermined range.

And, as described above, as the device for fixing the engine speed to the predetermined predetermined speed is composed of a link and a cable, there is a problem in that the installation cost and after-sales (A / S) cost is increased due to the complicated structure of the device. .

Accordingly, an object of the present invention is to simplify the structure of an apparatus for easily fixing the engine speed to a predetermined predetermined speed by using a hydraulic valve that controls the flow direction of the hydraulic oil discharged from the master cylinder according to the pressure of the accelerator pedal. It is to provide an engine accelerator pedal fixing device for heavy equipment to reduce installation cost and after-sales cost, and to provide convenience to the user by easy operation of the fixing device.

1 is a schematic configuration diagram of a conventional engine accelerator pedal fixing device for heavy equipment,

2 is a schematic configuration diagram of an engine accelerator pedal fixing device for heavy equipment according to an embodiment of the present invention.

* Explanation of symbols used in the main part of the drawing

10: accelerator pedal

11: auxiliary pedal

12: first link

13: second link

14: third link

15: loading

F: Euro

S: valve spring

V: Hydraulic Valve

SL: Throttle lever

CY1: 1st hydraulic cylinder

CY2: 2nd hydraulic cylinder

An object of the present invention as described above, an accelerator pedal rotatably mounted at a predetermined position of the vehicle body, one end is hinged to the accelerator pedal, the first link is interlocked when the accelerator pedal is pressed, and one end is connected to the other end of the first link. A second link that is hinged and fixed, a third link having one end hinged to the other end of the second link and the other end rotatably fixed to the vehicle body predetermined position, and one end hinged to the middle of the third link to pressurize the accelerator pedal. A linearly moving rod, a first hydraulic cylinder connected to the other end of the rod to generate a predetermined working pressure upon transmission of power due to the accelerator pedal pressure, and a first hydraulic cylinder connected to the first hydraulic cylinder and discharged from the first hydraulic cylinder A second hydraulic cylinder for adjusting the opening / closing angle of the throttle lever by driving according to the operating pressure, and a flow path between the first hydraulic cylinder and the second hydraulic cylinder, Controlling the flow direction and is switched to the pressing by the user is achieved by a heavy equipment engines accelerator pedal retainer, characterized by configured by comprising a hydraulic valve for fixing the engine speed at a predetermined rotational speed is set in a range to provide.

According to a preferred embodiment, the hydraulic valve is a first state of the initial state of opening the flow path so that the operating pressure discharged from the first hydraulic cylinder by the accelerator pedal pressure is supplied to the second hydraulic cylinder, and the user It is provided with a second state to close the flow path when switching by the pressurized by, and to block the supply of hydraulic oil to the second hydraulic cylinder to fix the throttle lever at a predetermined angle.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the technical scope of the present invention.

2 is a schematic configuration diagram of an engine accelerator pedal fixing device for heavy equipment according to an embodiment of the present invention.

As shown in detail in the drawing, the accelerator pedal 10 is rotatably mounted within a predetermined angle (within 55 °) at a predetermined position of the vehicle body, and when the accelerator pedal 10 is pressurized to perform a mechanical link motion. A plurality of link members (L) for transmitting power according to the pressure of the accelerator pedal (10) is connected to the accelerator pedal (10), the predetermined operation during power transmission through the link member (L) due to the pressure of the accelerator pedal (10). The first hydraulic cylinder (master cylinder) CY1 generating pressure is connected to the link member L, and is driven according to the operating pressure discharged from the first hydraulic cylinder CY1 to open and close the throttle lever SL. The second hydraulic cylinder (CY2) for adjusting the pressure is connected to the first hydraulic cylinder (CY1), the auxiliary pedal by the user in the flow path (F) between the first hydraulic cylinder (CY1) and the second hydraulic cylinder (CY2) 11) By controlling the flow direction of the hydraulic fluid by pressurization, the engine speed is set to the set speed of the predetermined range. Establishes hydraulic valves (V) are provided.

At this time, the above-described hydraulic valve (V) is switched at the time of pressurizing the auxiliary pedal (11) in order to fix the first state (I) of the initial state of opening the flow path (F) and the engine speed at the set speed, the flow path ( F) is closed and it has the 2nd state (II) which interrupts supply of hydraulic fluid to 2nd hydraulic cylinder CY2. The aforementioned link member L is hinged and fixed to the accelerator pedal 10 so that the first link 12 interlocked when the accelerator pedal 10 is pressed, and a second link having one end hinged to the other end of the first link 12. (13) and a third link (14), one end of which is hinged to the other end of the second link (13) and the other end of which is rotatably fixed to the vehicle body predetermined position, and hinged to the intermediate side of the third link (14). The accelerator pedal 10 is configured to include a rod 15 that moves linearly when pressed.

Reference numeral S is a valve spring for elastically biasing the opening state of the flow path (F) as an initial state when removing the load pressurizing it from the auxiliary pedal (11).

Referring to the method of using the engine accelerator pedal fixing device for heavy equipment according to the present invention is configured as follows.

When the accelerator pedal 10 is pressed by the user at a predetermined pressure, the first link 12 integrally connected to the accelerator pedal 10 is interlocked and rotates clockwise in the drawing, and one end of the first link 12 is connected to the accelerator pedal 10. The second link 13 which is rotatably connected to the other end is horizontally moved in the left direction in the drawing, and the first link is rotatably connected to the other end of the second link 13 and the other end is hinged and fixed to the vehicle body predetermined position. 14 rotates counterclockwise in the drawing with the lower end as a pivot point, and a rod 15 pivotably connected to the middle of the third link 14 is horizontally moved leftward in the drawing. As a result, as the piston 15 drives the piston rod (not shown) of the first hydraulic cylinder CY1 due to the movement of the rod 15, the operating pressure discharged from the first hydraulic cylinder CY1 is reduced through the flow path F. 2 is delivered to the hydraulic cylinder (CY2).

Therefore, the opening and closing angle of the throttle lever SL is adjusted according to the pressing force for pressing the accelerator pedal 10, so that the engine speed can be adjusted to a predetermined predetermined speed.

At this time, when the engine rotational speed is to be fixed at the predetermined predetermined rotational speed, the operating pressure of the predetermined pressure discharged from the first hydraulic cylinder CY1 by pressing the accelerator pedal 10 is the second hydraulic pressure through the flow path F. The flow path F is closed as the auxiliary pedal 11 is pressed in the state supplied to the cylinder CY2 to switch to the second state II in the downward direction in the drawing. As a result, the hydraulic oil is discharged from the first hydraulic cylinder CY1 to shut off the supply of hydraulic oil to the second hydraulic cylinder CY2, and the driving of the second hydraulic cylinder CY2 is stopped. Therefore, even when the driver's foot is removed from the accelerator pedal 10, the aforementioned throttle lever SL maintains a predetermined angle, so that the engine speed can be fixed at the set speed.

In addition, when the load pressing the auxiliary pedal 11 is removed, the hydraulic valve V is switched to the first state I of the initial state by the valve spring S, so that the aforementioned flow path F is opened. The hydraulic fluid discharged from the first hydraulic cylinder CY1 by the pressure pedal 10 is supplied to the second hydraulic cylinder CY2.

As described above, according to a preferred embodiment of the present invention, by using a hydraulic valve for controlling the flow direction of the hydraulic oil discharged from the master cylinder according to the pressurization of the accelerator pedal of the apparatus for easily fixing the engine speed to a predetermined predetermined speed By simplifying the structure, the installation cost and after-sales cost are reduced, and the fixing device can be easily operated to provide convenience to the user.

Claims (2)

An accelerator pedal rotatably mounted at a vehicle body predetermined position; A first link having one end hinged to the accelerator pedal and interlocked when the accelerator pedal is pressed; A second link, one end of which is hinged to the other end of the first link; A third link having one end hinged to the second link end and the other end rotatably fixed to the vehicle body predetermined position; In an acceleration device, one end of which is hinged to the middle of the third link and consists of a rod that linearly moves when the accelerator pedal is pressed. A first hydraulic cylinder connected to the other end of the rod to generate a predetermined working pressure when the power is transmitted due to the accelerator pedal pressure; A second hydraulic cylinder connected to the first hydraulic cylinder and driven according to an operating pressure discharged from the first hydraulic cylinder to adjust the opening and closing angle of the throttle lever; And It is installed in the flow path between the first hydraulic cylinder and the second hydraulic cylinder to control the flow direction of the working oil, and is configured to include a hydraulic valve for switching the pressure by the user to fix the engine speed to the set speed of the predetermined range Heavy-duty engine accelerator pedal fixing device characterized in that. According to claim 1, wherein the hydraulic valve; A first state of an initial state of opening the flow path such that an operating pressure discharged from the first hydraulic cylinder by the accelerator pedal pressurization is supplied to the second hydraulic cylinder; And The engine accelerator pedal fixed for the heavy equipment, characterized in that for closing the flow path when switching by the user, and the second hydraulic cylinder to block the supply of hydraulic oil to secure the throttle lever at a predetermined angle Device.