JPS6120448B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive control operation device for a driven body such as a mixer drum mounted on a vehicle such as a concrete mixer truck.

In general, a driven body such as a mixer drum mounted on the body frame of a vehicle such as a concrete mixer truck is controlled to perform forward, reverse, increase, and deceleration control to charge, mix, and discharge fresh concrete. ing. However, since the conventional operation control uses mechanical mechanisms such as links and cables, the operation location is fixed and limited.
The operator cannot smoothly control the driven body while monitoring the operating state thereof, which is not only inefficient, but also poses a risk of causing an unexpected accident.

Accordingly, the present invention provides an efficient, safe, nimble, and reliable way to control the operation of the driven body so that the operation of the driven body can be controlled not only inside the driver's cab but also easily and easily from outside the driver's cab. It is an object of the present invention to provide a drive control operation device for a driven body mounted on a vehicle, which has a simple configuration.

In order to achieve such an object, the present invention provides a driven body that is rotatably mounted on a vehicle; a drive device for rotating the driven body in forward, reverse, increasing, and deceleration rotation; and an operating section of this drive device. an electric servo control device for forward, reverse, increase, and deceleration control of the device; an electric servo control device that is independently installed inside and outside the driver's cabin of the vehicle and connected to the electric servo control device; an internal operating device and an external operating device configured to separately input output signals to the electric servo control device; respectively, and a positive
It is characterized by being able to perform reverse, increase, and deceleration control continuously.

An embodiment in which the present invention is applied to a concrete mixer truck will be described below with reference to FIGS. 1 and 2.

In FIG. 1, a mixer drum 2 is rotatably supported on a body frame 1 of a mixer truck V. The mixer drum 2 is interlocked with a hydraulic motor Mo, which is a reversible variable displacement hydraulic pump P rotationally driven by a traveling engine E.
(hereinafter simply referred to as a pump).

The pump P is located in the driver's cab of the mixer truck V.
Internal controller 3 installed in the cab or driver's cab
They are each electrically and remotely controlled by external operating devices 4 that are removably provided at several locations outside the cab. FIG. 2 shows the control circuit. This circuit will be explained below.The operating shaft 5 of the servo valve for controlling the pump P
A control lever 6 is connected to the control lever 6, and by swinging the control lever 6 left and right, the rotation of the pump P can be controlled.In other words, the control lever 6 can be moved from the stop position S shown in FIG. When it swings to the right, the pump P, that is, the mixer drum 2, is rotated in the normal direction F, and as the swing angle is increased, its rotation speed is gradually increased and it rotates at a constant speed (C, D, S) at position C. Further, when the pump P swings to the left from the stop position S, the pump P, that is, the mixer drum 2 is reversed R, and as the swing angle increases, the rotation speed is gradually increased.

The operation lever 6 is interlocked with a reduction gear 9 via an interlocking rod 7 and a swing lever 8, and this reduction gear 9 is further interlocked with an electric motor M via an operation lever position detector 10. By controlling the rotation, the rotation of the pump P can be electrically controlled.

Next, to explain the rotation control system of the electric motor M, a power switch box 11 and an internal operating device 3 are provided inside the cab of the mixer drum 2, and the internal operating device 3 and the internal operating device 3 are provided outside the cab of the mixer drum 2. An external operating device 4 having the same structure is movably provided.

The power switch box 11 has two switching pieces 12 and 13, and these switch pieces 1
2 and 13 are connected to a power supply circuit 15 connected to a battery 14. Further, a plurality of outlets 16 ₁ , 16 ₂ , 16 ₃ are connected to the power supply circuit 15 , and these outlets 16 ₁ , 16 ₂ , 16 ₆ are connected at appropriate intervals on the mixer truck V, for example, on the side and rear of the vehicle body. and can be mounted on. The variable resistor 17 in the internal operating device 3 is directly connected to the power supply circuit 15, and a plug 19 is connected to the variable resistor 18 of the external operating device 4.
9 can be selectively plugged into the outlets 16 ₁ , 16 ₂ , 16 ³ . When the changeover switches 12 and 13 are switched to the left side in FIG. 2, the power supply circuit 15 is connected to the internal operating device 3, and when switched to the right side, the power supply circuit 15 is connected to the external operating device 4.

As shown in FIG. 3, an operation panel 24 for operating the variable resistor 17 and changeover switch pieces 12 and 13 of the changeover switch box 11 are attached to the operation panel of the internal operation device 3. The operation panel of the external operation device 4 has an operation camera 2 for operating the variable resistor 18, as shown in FIG.
5 is provided.

Therefore, the lead wires extending from the external controller 4 are made long and are connected to the outlets 16 ₁ , 16 ₂ , 1.
6 A position away from ₃ , that is, mixer truck V
The external operating device 4 can be operated even from a remote position.

The operation camera 24 or 25 of the internal or external operating device 3, 4 is rotated clockwise from the stop position S (second
When the operating lever 6 is rotated to the right (moved to the right in FIG. 2), the operating lever 6 is controlled to swing toward the forward rotation F side, and when rotated to the left (moved to the left in FIG. 2), the operating lever 6 is controlled to swing toward the reverse rotation R side.

20 and 21 are changeover switch pieces 12, 13
The differential circuit 20 is a differential circuit and a drive circuit that are connected to the power supply circuit 15 by the ON operation of By switching, an output signal is selectively inputted via the output circuit 22, and an output signal from the operating lever position detector 10 interposed between the electric motor M and the reduction gear 9 is inputted via the feedback circuit 23. It is becoming more and more like this. A control output signal from the differential circuit 20 obtained by comparing the two output signals is input to the electric motor M via the drive circuit 21 to rotationally drive it. The rotational direction and rotational speed of the electric motor M are controlled by the input control output signal, and the control output of the electric motor M is controlled by the control lever position detector 10 and the speed reducer 9.
When the operating lever 6 is oscillated to a predetermined position via the link mechanism, the lever position detection signal detected by the operating lever position detector 10 is transmitted to the differential circuit via the feedback circuit 23. 20 is input. and the differential circuit 2
0, the drive circuit 21, the electric motor M, and the operating lever position detector 10 constitute an electric servo control device SC.

Next, the operation of the first embodiment of the present invention shown in Figs. When switched to the left side in FIG. 2 (upper side in FIG. 3), the internal controller 3, the differential circuit 20, the drive circuit 21, and the operating lever position detector 10 are all connected to the power supply circuit 15, All output signals from the operating lever position detector 10 are input to the differential circuit 20. Now, if the operation camera 24 of the internal controller 3 is rotated clockwise in FIG. 3 (to the right in FIG. 2), the electric motor M is driven to rotate in the normal direction, and the operation lever 6 is swung rightward. The mixer drum 2 can be driven to rotate in the forward direction. Then, if the amount of clockwise rotation of the operation camera 24 increases, the mixer drum 2 can be rotated at an increased speed in the forward rotation direction, and if the operation camera 24 is rotated to the position where its pointer indicates the C position,
The mixer drum 2 can be rotated at a constant speed (CDS). Further, if the operation camera 24 is rotated counterclockwise in FIG. 3 (to the left in FIG. 2), the electric motor M is driven in the reverse direction, and the operation lever 6
The mixer drum 2 can be driven in the reverse direction by swinging to the left. If the amount of rotation of the operation camera 24 in the counterclockwise direction increases, the mixer drum 2 can be rotated at an increased speed in the reverse direction.

Next, when controlling the rotation of the mixer drum 2 outside the operator's cab, insert the plug 19 of the external controller 4 into one of several outlets 16 ₁ , 16 ₂ , 16 ₃ installed at appropriate locations on the mixer truck V. After that, when the changeover switch pieces 12 and 13 are switched to the right side in FIG. 2 (lower side in FIG. 3), the external controller 4 and the electric servo control device SC are connected to the power supply circuit 15, The mixer dom 2 can be rotationally controlled by rotating the operation camera 25 of the external controller 4. Since the operation procedure using the external operating device 4 is exactly the same as that for the internal operating device 3 described above, detailed explanation thereof will be omitted.

A second embodiment of the invention is shown in FIGS. 5-7. In this embodiment, the rotation of the mixer drum 2 is controlled not only by the swinging operation of the control lever 6 of the servo valve of the pump P as described above, but also by the driving engine E which is the drive source of the pump P. The accelerator lever 26 of the engine E is connected to another electric servo control device SC' having exactly the same structure as the electric servo control device SC via a connecting rod 27. There is.

The two electric servo control devices SC, SC' are connected in parallel to the power supply circuit 15 via three switch pieces 28, 29, 30, and the switch pieces 28, 29, 30 are connected to the left and right sides. No matter which side is turned on, it is connected to the power supply circuit 15 and operated. The internal and external actuators 3 and 4 each have a control lever 6 for the servo valve of the pump P.
Other variable resistors 31 and 32 for swinging control of the accelerator lever 26 of the engine E are arranged in parallel to the singing motion control variable resistors 17 and 18, and these resistors 31 and 32 also serve as output circuits, respectively. 22' to the differential circuit 20' of the electric servo control device SC', and the output signal from the variable resistor 31 or 32 is connected to the differential circuit 20' and the drive circuit 21'. The power is sent to the electric motor M', and the output of the engine E can be increased or decelerated via the connecting rod 27 and the accelerator lever 26 by rotating the electric motor M' in the forward or reverse direction. As shown in FIG. 6, on the operation panel of the internal operation device 3, there is an operation camera 24 for controlling the pump P, a changeover switch piece 28,
In addition to 29 and 30, an operation camera 33 for controlling the accelerator of the engine E is provided, and as shown in FIG. An operation camera 34 for controlling the accelerator of the engine E is provided.

Next, to explain the operation of this second embodiment, the triple switch pieces 28, 29, 3
0 to the left side (upper side in Figure 6), the internal controller 3 and the electric servo controllers SC, SC' are both connected to the power supply circuit 15 and put into operation. As in the first embodiment, the mixer drum 2 can be controlled to rotate by swinging the operating lever 6, and the accelerator lever 26 can also be controlled to swing by rotating the operating lever 33. If the operation camera 33 is rotated clockwise (moved to the right in FIG. 5), the output voltage applied to the differential circuit 20' increases and the accelerator lever 2
6 to the right, that is, to increase the output, the mixer drum 2 can be rotated at high output speed. Also, by rotating the operation camera 33 counterclockwise (move to the left in Figure 5), the differential The output voltage applied to the circuit 20' decreases and swings to the left, that is, to the output decreasing side, so that the mixer drum 2 can be rotated at a low output deceleration.

Furthermore, by switching the changeover switch pieces 28, 29, and 30 to the right side (lower side in Figure 6), the external controller 4 and the electric servo control devices SC, SC' will be connected to the power supply circuit 15, and the external controller By rotating the operation panels 25 and 34 on the operation panel 4, the pump P and engine E are controlled in exactly the same way as when relying on the internal operation device 3 described above, and the mixer drum 2 is controlled.
The rotation can be controlled.

Therefore, in this second embodiment, the mixer drum 2 can be individually controlled for forward, reverse, increase, and deceleration by both the servo valve control of the reversible variable displacement hydraulic pump P and the accelerator control of the engine E.

As described above, according to the present invention, a driven body such as a mixer drum rotatably mounted on a vehicle; a drive device for forward, reverse, increase, deceleration and retreat of this driven body; an electric servo control device for controlling forward, reverse, increase, and deceleration of the device in conjunction with an operating section; a driver's cabin of the vehicle;
an internal operating device and an external operating device each independently installed on the outside and connected to the electric servo control device to input output signals to the device;
The driven body can be selectively controlled for forward, reverse rotation, increase, deceleration, and stop using these internal and external operating devices, so that the driven body can be monitored from inside the driver's cab as well as from outside the driver's cab while observing its driving state. The above control can be performed, and the driven body can be operated efficiently and safely.

In particular, the internal operating device and external operating device are
Each of the electric servo control devices is provided with an operation camera for variably adjusting the voltage supplied to the electric servo control device, and the forward, reverse, increase, and deceleration control of the driven body can be performed continuously. By simply operating the operating device, the voltage supplied to the electric servo control device can be variably adjusted according to the amount of operation, and the driven body can be continuously controlled for forward, reverse, increase, and deceleration. Therefore, the operation of the driven object can be finely controlled according to the operating conditions, and the operating state of the driven object can be arbitrarily set by the operation photographing, and the operating state can be set as desired. can also be understood numerically.

[Brief explanation of the drawing]

Fig. 1 is a side view of a mixer truck equipped with the device of the present invention, Fig. 2 is an electrical control circuit diagram of the first embodiment of the device of the present invention, Fig. 3 is a front view of the operation panel of the internal controller, and Fig. 4 is a side view of a mixer truck equipped with the device of the present invention. The figure is a front view of the control panel of the external control device, FIG. 5 is an electric control circuit diagram of the second embodiment of the device of the present invention, FIG. 6 is a front view of the control panel of the internal control device, and FIG. It is a front view of the operation panel of the external operation device. Cab...Driver's cab, E...Engine as a drive device, P...Reversible variable displacement hydraulic pump as a drive device, SC, SC'...Electric servo control device, V...
...Mixer truck as a vehicle, 3... Internal operating device, 4... External operating device, 16 ₁ , 16 ₂ , 16 ₃
...Outlet as a connecting device, 19...Plug as a connecting device.

Claims (1)

[Scope of Claims] 1. A driven body rotatably mounted on a vehicle; A drive device for rotating this driven body in forward, secondary, increasing, and deceleration rotations; Interlocked with an operating section of this drive device; and an electric servo control device for controlling forward, reverse, increase, and deceleration of the device; installed independently inside and outside the driver's cabin of the vehicle, and connected to the electric servo control device to send an output signal to the device. an internal controller and an external controller, each of which is configured to input a voltage separately; A drive control operating device for a driven body mounted on a vehicle, which is capable of continuously performing forward, reverse, increase, and deceleration control of the driven body. 2. The drive control operation device for a driven body mounted on a vehicle according to claim 1, wherein a separable connector is provided between the external operating device and the electric servo control device. Drive control operation device for the drive body. 3. In the drive control operating device for a driven body mounted on a vehicle according to claim 1, the internal operating device and the external operating device are provided with a changeover switch for selectively connecting them to a power supply circuit. , a drive control operation device for a driven body mounted on a vehicle that can be selectively operated from inside or outside the driver's cab.