JP2006239943A - Drum operating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum operating device capable of being reduced in cost and capable of preventing erroneous drum rotating operation. <P>SOLUTION: In the drum operating device equipped with a control unit 2 for controlling the driving of the drum D of a mixer truck V and an operation part 1 capable of transmitting a drum driving order to the control unit 2 through signal lines 13 and 26, the control unit 2 is equipped with a plurality of signal lines 26 each having a first terminal 25 provided to the leading end thereof and the operation part 1 is equipped with the second terminal 12 connectable to the first terminal 25. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement of a drum operation device that drives a drum of a mixer vehicle.

  For mixer trucks, drums are mounted on the chassis because of the need to transport mortar, ready-mixed concrete, etc. (hereinafter referred to as “raw concrete”) from the ready concrete factory to the construction site. In order to prevent this, the drum is normally rotated and stirred continuously. When the drum arrives at the construction site, it is necessary to reverse the drum in order to discharge the raw concrete from the drum.

  Therefore, a drum operation device is mounted on the mixer vehicle so that an operator can perform a rotation driving operation of the drum.

  The drum operation device includes a control device that controls a hydraulic pump that supplies hydraulic pressure to a hydraulic motor that rotationally drives the drum, and an operation unit that transmits a drive command for discharging, rotating, and stopping the drum to the control device. However, since the mixer truck is generally large, a plurality of operation units are installed in the driver's seat of the mixer car, on the left and right sides of the rear side of the mixer car, etc. in order to reduce the work burden on the operator. Yes.

  By providing operation units at a plurality of locations on the mixer truck as described above, the operator can perform drum rotation operation at any one of the operation units installed in the vicinity for discharging, charging, and kneading the raw concrete. Therefore, the operator is not forced to move to the operation unit far away, thereby reducing the operator's work load.

Further, in this drum operation device, in order to prevent a person other than the operator from operating the operation unit by mistake and performing the drum rotation operation against the intention of the operator, the drum rotation operation is not performed. An operation right is always assigned to one operation unit (see Patent Document 1).
Japanese Patent Laid-Open No. 2002-172612 (page 4, right column, 24th line to 39th line, FIG. 1)

  However, in the conventional drum operation device, as described above, since it is necessary to install substantially the same operation units at a plurality of locations for both the mixer trucks, the cost increases.

  Further, when the operation right is mistakenly given to an operation unit other than the operation unit near the operator, there is also a concern that the drum rotation operation may be performed by an operation by a person other than the operator.

  Therefore, the present invention was devised in order to improve the above-described problems, and an object of the present invention is to provide a drum operation device that can reduce costs and prevent erroneous drum rotation operations. It is to be.

  In order to achieve the above-described object, the present invention provides a drum operation device including a control device that drives and controls a drum of a mixer vehicle, and an operation unit that can transmit a drum drive command to the control device via a signal line. The control device includes a plurality of signal lines each having a first terminal at the tip, and the operation unit includes a second terminal connectable to the first terminal.

  According to the present invention, in this drum operation device, the second terminal on one operation unit side can be connected to any one of the first terminals on the control device side, and the operator can It is possible to select a first terminal that is convenient in performing various operations such as charging, discharging, and kneading of the raw food.

  Furthermore, since this drum operation device is provided with a plurality of second terminals, it is not necessary to provide only one operation section, and the cost of the drum operation device can be reduced. .

  Furthermore, since the operator will carry it to the vicinity of the 1st terminal which aims at an operation part suitably, and only one operation part is used for drum rotation drive operation, a person other than an operator mistakenly operates an operation part. There is no operation.

  Accordingly, it is possible to prevent a drum operation unintended by the operator from being performed by a person other than the operator, so that various operations involving the drum rotation operation can be performed safely.

  The present invention will be described below based on the illustrated embodiment. FIG. 1 is a diagram illustrating a drum operation device according to an embodiment. FIG. 2 is a diagram conceptually showing the configuration of the drum drive control system.

  As shown in FIG. 1, the drum operating device according to the embodiment includes an operating unit 1 and a control device 2.

  As shown in FIG. 2, the control device 2 includes a vehicle speed detection unit 21 that detects whether or not the mixer vehicle is running, and a detection unit 22 that detects whether or not the parking brake B is applied. When it is determined that the mixer truck is running, the hydraulic motor M that drives the drum D and the hydraulic pump P that supplies hydraulic oil to the hydraulic motor M are controlled so as not to rotate and discharge. .

  Specifically, the control device 2 is set so as to not accept the command even when there is a command for discharging rotation from the drum operation device. The controller 2 performs discharge rotation prevention control of the drum D.

  Since the control device 2 is well known, it will not be described in detail. Based on this, the rotation direction and rotation speed of the drum D are controlled.

  Incidentally, the detection means 22 for detecting whether the parking brake B is applied or not is specifically a position sensor for detecting the position of the lever of the parking brake B, for example.

  In addition, as shown in FIG. 1, four first terminals 25 have a pair of support columns L that support a drum D provided in the cab C of the mixer vehicle V and on the left and right sides of the mixer vehicle V, Each of the first terminals 25 is installed in the vicinity of the hopper H in the mixer vehicle V, and each of the first terminals 25 is connected to the control device 2 via a signal line 26.

  The first terminals 25 are installed at four locations, which are predetermined positions of the mixer vehicle as described above. However, at least two first terminals 25 may be provided for convenience when the operator performs the drum rotation operation. Also, if convenient, four or more may be installed.

  In turn, the operation unit 1 includes a volume type operation switch for operating the rotation direction and rotation speed of the drum D (not shown), a rocker type changeover switch for switching the life and death of the discharge rotation prevention control of the control device 2, and the drum D A push switch type stop switch that stops the rotation of the operation unit main body 11, a second terminal 12, and a signal line 13 that connects the operation unit main body 11 and the second terminal 12. ing.

  Further, the length of the signal line 13 is set to a length suitable for the operator to perform various operations such as charging, discharging, and kneading of the raw food.

  The second terminal 12 can be connected to the first terminal 25 installed at each of the above-described locations. When the operator operates each switch (not shown) of the operating device body 11, the second terminal 12 responds to the operation. A predetermined command is sent as a signal to the control device 2 via the signal lines 13 and 26, the first terminal 25, and the second terminal 12, that is, the operation unit 1 communicates with the control device 2. It is possible.

  In addition, about the structure of the 1st terminal 25 and the 2nd terminal 12, specifically, it controls from the operation part 1, such as making the 1st terminal 25 into a female terminal and making the 2nd terminal 12 into a male terminal. What is necessary is just to electrically connect the signal line 13 and the signal line 26 so that a drum drive command can be transmitted to the apparatus 2.

  Further, the control device 2 maintains the drum D in the stopped state when the operator maintains the operation switch (not shown) in the neutral position, and when the operator twists to the left from the neutral position, the drum D is discharged and rotated. When it is twisted, the drum D is thrown in and rotated, and the rotational speed of the drum D can be controlled according to the degree of twist. Furthermore, the control device 2 is set so as to perform control to stop the rotation of the drum D when the operator presses a stop switch (not shown).

  When the switch (not shown) is in a position where the control device 2 performs the discharge rotation prevention control, even if the operation switch is twisted to the discharge rotation side, the control device 2 does not discharge and rotate the drum D. When the operation switch is twisted to the discharge rotation side when the changeover switch is in the position to release the discharge rotation prevention control, the control device 2 controls the drum D to rotate and discharge.

  As described above, in this drum operation device, the second terminal 12 on one operation unit 1 side can be connected to any one of the first terminals 25 on the control device 2 side. For example, in the case where the live control unit is always discharged on the spot while swinging the chute S of the mixer truck V to the left side, the operator connects the second terminal 12 to the first terminal 25 installed on the column L. Thus, the operation unit 1 can be operated while the chute S is operated.

  In other words, the operator can select the first terminal 25 that is convenient in performing various operations such as charging, discharging, and kneading of the raw food.

  Furthermore, since this drum operation device is provided with a plurality of second terminals 25, it is not necessary to provide only one operation unit 1 and to reduce the cost of the drum operation device. Can do.

  Furthermore, the operator appropriately transports to the vicinity of the first terminal 25 aiming at the operation unit 1 and only one operation unit 1 is used for the drum rotation driving operation. The operation unit is not operated.

  Accordingly, it is possible to prevent a drum operation unintended by the operator from being performed by a person other than the operator, so that various operations involving the drum rotation operation can be performed safely.

  Further, in the case where the signal line is provided in the operation unit, there is an advantage that the operator can easily see the tip of the chute during the operation of discharging the raw food, and the burden on the operator in the discharging operation can be reduced.

  This is the end of the description of the embodiment of the present invention, but the scope of the present invention is of course not limited to the details shown or described.

It is a figure which shows the drum operation apparatus in one Embodiment. It is a figure which shows notionally the structure of a drum drive control system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation part 2 Control apparatus 11 Operation part main body 12 2nd terminals 13, 26 Signal line 21 Vehicle speed detection means 22 Detection means 25 1st terminal B Parking brake C Driver's cab D Drum H Hopper L Post M Hydraulic motor P Hydraulic pump S chute V mixer truck

Claims (4)

In a drum operation device including a control device for driving and controlling a drum of a mixer car and an operation unit capable of transmitting a drum drive command to the control device via a signal line, the control device includes a first terminal at a tip. A drum operation device comprising a plurality of signal lines, and the operation unit comprising a second terminal connectable to the first terminal. The drum operating device according to claim 1, wherein the first terminal is provided at a predetermined position in a driver's cab of the mixer truck and behind the mixer truck. The drum operating device according to claim 2, wherein the predetermined positions are the left and right side portions at the rear of the mixer truck and the vicinity of the hopper. The drum operating device according to any one of claims 1 to 3, wherein the operation unit includes a signal line, and a second terminal is provided at a tip of the signal line.

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