JP2009061629A - Shoot driver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shoot driver capable of further reducing the operating load of an operator and suppressing deterioration in the function of a mixer car. <P>SOLUTION: The shoot driver 1 includes: a rotative drive means 2 for performing rotative dive of a shoot S installed in the rear end of an mixer car M so as to be rotatable and elevatable; and an elevating driving means 3 driving the shoot S so as to be elevated, when it receives a shoot storage command, the shoot S is lowered by the elevating driving means 3, so as to be lowered to a storage height, further, the shoot S is rotated in the storage direction by the rotative drive means 2, so as to be rotated to the storage rotation position, and the shoot S is stored to the storage position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a chute drive device that drives a chute installed in a rear end of a mixer vehicle so as to be capable of turning and raising and lowering.

  The mixer truck is configured to load mortar, ready-mixed concrete, etc. (hereinafter referred to as “biocon”) in a mixer drum that is rotatably mounted on a gantry and transport it from the biocon factory to a construction site.

  In this mixer truck, the raw concrete is discharged to the construction site at the construction site, and a chute installed at the rear end of the mixer truck is used for the convenience of discharging the raw concrete.

  The chute is installed at the rear end of the mixer truck so as to be able to turn and lift. The operator of the mixer truck turns the chute and raises the chute so that the raw concrete discharged from the mixer drum is brought to a stop position of the mixer truck to some extent. It can be put into the desired construction location without depending on it.

  However, the chutes are heavy and do not need to be noticed if there is no raw kon accumulated, and they are very heavy when the raw kon is deposited. It will be tough.

In view of this situation, a technique has been developed in which a hydraulic cylinder performs chute turning and raising / lowering operations for the purpose of reducing the work burden on the operator (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 01-153207 (Embodiment of the Invention, FIG. 1)

  However, in the conventionally proposed chute driving device, as described above, the chute turning and raising / lowering are only driven by the hydraulic cylinder, and the operator needs to control it.

  Therefore, when the live control unit is discharged, it is necessary to store the chute in the storage position suitable for the traveling of the mixer vehicle. Therefore, the operator must drive the chute until the chute is stored.

  If the raw concrete remaining in the mixer drum or on the chute solidifies, the mixing performance of the mixer drum deteriorates and the raw concrete discharge efficiency deteriorates. Although it is desirable to clean the chute, as described above, the operator must drive the chute at once, and as a result, it takes time to clean up and results in the deterioration of the performance of the mixer truck. It has become.

  Therefore, the present invention was devised in order to improve the above-mentioned problems, and the object of the present invention is to provide a chute drive that can further reduce the operator's work load and suppress the deterioration of the function of the mixer truck. Is to provide a device.

  In order to achieve the above object, in a chute drive device comprising a turning drive means for turning a chute installed at a rear end of the mixer vehicle so as to be capable of turning and raising and lowering, and a raising / lowering drive means for raising and lowering the chute Upon receipt of the chute storage command, the chute is lowered by the raising / lowering driving means and lowered to the retracted height, and the chute is swung in the retracted direction by the turning drive means and swung to the retracted swiveling position, and the chute is stored in the retracted position. It is characterized by doing.

  According to the chute drive device of the present invention, when the chute is stored, the operator is cut and there is no need to drive the chute, so that the operator's work burden can be reduced.

  In addition, since the operator does not need to drive the chute when storing the chute, the operator can quickly return home after completion of the discharge operation. Since the time required for cleaning the chute can be shortened, the function deterioration of the mixer truck can be suppressed.

  Therefore, according to this chute drive device, it is possible to further reduce the work burden on the operator and to suppress the functional deterioration of the mixer truck.

  The present invention will be described below based on the illustrated embodiment. FIG. 1 is a schematic diagram of a chute driving device according to an embodiment. FIG. 2 is a rear view of the mixer truck. FIG. 3 is a front view of a controller that operates the chute driving device.

As shown in FIG. 1, the chute drive device 1 according to the embodiment includes a turning drive unit 2 that drives the chute S to turn, a raising / lowering driving unit 3 that drives the chute S up and down,
A height position detecting means 4 for detecting that the chute S has been lowered to the retracted height, a turning position detecting means 5 for detecting that the chute S has been turned to the retracted turning position, a turning drive means 2 and an elevation drive means 3 are provided. A control unit 6 to be controlled and a controller 7 capable of inputting various commands to the control unit 6 by an operator's operation are provided.

  On the other hand, the chute S is installed at the rear end of the mixer truck M so as to be capable of turning and raising and lowering. More specifically, a cylindrical base 10 is provided at the rear end of the mixer truck M, and the chute S is inserted into the base 10 via a shaft 11 that can turn freely to the base 10. Installed on the mixer truck.

  Further, the chute S is hinged to the upper end of the shaft 11 so that the lower end, which is the tip, can be turned up and down, that is, can be raised and lowered.

  As shown in FIG. 2, the chute S is directed rightward with respect to the traveling direction of the mixer truck M and is in a state where the tip of the chute S is lowered to be suitable for traveling of the mixer truck when not in use. Stored.

  That is, in the case of this embodiment, the storage position of the chute S is approximately 90 degrees to the right with respect to the traveling direction with respect to the turning direction and the lowest with respect to the ascending direction. The storage position of approximately 90 degrees to the right with respect to the turning direction is the storage turning position, and the lowest position is the storage height. In the case of this embodiment, the storage position of the chute S is as described above, but this does not prevent the other positions from being the storage position of the chute S.

  In the case of this embodiment, the turning drive means 2 is a motor 15 that is installed on the base 10 to turn the chute S by driving the shaft 11 to turn. The motor 15 is a reduction gear 16. The shaft 11 can be swung in either the left or right direction via the.

  Further, the raising / lowering drive means 3 is interposed between the lower end of the shaft 11 and the tip of the chute S, and is attached to the hydraulic cylinder 17 so as to be rotatable in the vertical direction. The hydraulic pump 18 includes an electric motor that supplies oil, and a control valve 19 that switches expansion, contraction, and stop of the hydraulic cylinder 17. In this case, when the hydraulic cylinder 17 is extended to the maximum, the tip of the chute S is positioned at the uppermost position. On the other hand, when the hydraulic cylinder 17 is contracted to the minimum, the tip of the chute S is positioned at the lowest position and becomes the storage height. Is set to

  Further, the height position detection means 4 only needs to be able to detect that the chute S reaches the retracted height. In this case, it is detected that the chute S is positioned at the retracted height when the hydraulic cylinder 17 is contracted most. Specifically, for example, a proximity switch that detects that the tip of the rod 17a in the hydraulic cylinder 17 is closest to the cylinder 17b is used. The sensing principle of the proximity switch is not particularly limited, and a capacitance type, an ultrasonic type, a photoelectric type, or the like can be used. Further, instead of the proximity switch, a contact-type switch may be used, or by sensing the stroke of the hydraulic cylinder 17, it may be detected that the chute S is at the storage height.

  Further, the turning position detecting means 5 only needs to detect that the chute S is in the retracted turning position. In this case, when the chute S becomes approximately 90 degrees with respect to the traveling direction of the mixer vehicle M, the chute S is detected. It is a proximity switch that detects the closest approach. This proximity switch may be installed on the bodywork of the mixer truck M or the like. Note that the proximity switch in the turning position detecting means 5 is not particularly limited in the same manner as the proximity switch in the height position detecting means 4 described above, and a contact type switch is used instead of the proximity switch. It may be used to detect that the chute S is in the retracted turning position.

  The motor 15, the hydraulic pump 18 with an electric motor, the control valve 19, the proximity switch serving as the height position detecting means 4, and the proximity switch serving as the turning position detecting means 5 are connected to the control unit 6, and the operator When the control command is input by operating the controller 7, the control unit 6 drives the chute S in the turning and elevation directions as instructed by the operator.

  Specifically, as shown in FIG. 3, the controller 7 includes a left turn button 21 that outputs a control command for turning the chute S to the left by the operator's pressing to the control unit 6, and a right turn of the chute S by the operator's pressing. A right turn button 22 that outputs a control command to rotate to the control unit 6 and a control command to rotate the chute S in the elevation direction, that is, the tip of the chute S upward by pressing by the operator, are output to the control unit 6. The up button 23, the down button 24 that outputs a control command to the control unit 6 to rotate the chute S in the depression direction by the operator's pressing, that is, the lower end of the chute S, and the chute S are stored by the operator's pressing. The motor 15 and the storage button 25 which outputs the control command which drives the control valve 19 to the control part 6 are comprised so that it may store in a position.

  That is, when the control unit 6 receives a control command from the controller 7 in response to pressing of the left turn button 21, the right turn button 22, the up button 23, and the down button 24 by the operator, the motor 15 is operated according to the control command. It is driven to turn the chute S in the direction intended by the operator, and the control valve 19 is switched to drive the hydraulic cylinder 17 to raise the chute S in the direction intended by the operator.

  On the other hand, when the operator presses the storage button 25 and the control unit 6 receives a control command for storing the chute S, the control unit 6 performs the following operation.

  First, the control unit 6 switches the control valve 19 to supply hydraulic oil from the electric motor-equipped hydraulic pump 18 so as to contract the hydraulic cylinder 17 and lower the chute S or drive the electric motor-equipped hydraulic pump 18. Instead, only the control valve 19 is switched and the hydraulic cylinder 17 is contracted by the dead weight of the chute S to lower the chute S. The descent of the chute S is performed until the proximity switch serving as the height position detecting means 4 detects the approach of the chute S. The proximity switch detects the approach of the chute S and an ON signal is sent to the control unit 6. When input, the control unit 6 switches the control valve 19 to stop the contraction of the hydraulic cylinder 17 and brings the hydraulic cylinder 17 into a locked state. In this state, the chute S has been lowered to the retracted height and is maintained in that state.

  Next, the control unit 6 drives the motor 15 to turn the chute S rightward. The right turn of the chute S is performed until the proximity switch serving as the turning position detecting means 5 detects the approach of the chute S. The proximity switch detects the approach of the chute S, and the ON signal is sent to the control unit 6. When the signal is input to, the control unit 6 stops driving the motor 15. In this state, the chute S is in a state where it is lowered to the retracted height and is in a retracted turning position that is substantially 90 degrees with respect to the traveling direction of the mixer truck M. That is, the chute S is stored in the storage position.

  As described above, in the chute driving device 1, since the operator does not need to drive the chute S when the chute S is stored, the work burden on the operator can be reduced.

  Also, since the operator does not need to drive the chute S when storing the chute S, the operator can quickly return home after the completion of the live-container discharge operation. Since the time required to clean the mixer drum and chute can be shortened, the deterioration of the function of the mixer truck can be suppressed.

  Therefore, according to this chute drive device 1, it is possible to further reduce the work burden on the operator and to suppress the functional deterioration of the mixer truck.

  Furthermore, since the operator can securely store the chute S at a predetermined position only by instructing the chute driving device 1 to store the chute S, the forgetting to store the chute S can be prevented.

  Further, when the chute S is retracted, it is possible to turn the chute S prior to the descent of the chute S, but when the chute S is retracted as in the present embodiment, the chute S is first lowered. By turning the chute S to the swivel retracted position, the radius created by the locus of the tip of the chute S can be kept to a minimum when the chute S is turned. There is an advantage that interference with objects (buildings, vehicles, etc.) can be prevented.

  Further, in the present embodiment, the drive source in the turning drive means 2 is the motor 15 and the drive source in the elevation drive means 3 is the hydraulic cylinder 17, but the drive source is not limited to these.

  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 the schematic of the chute drive device in one embodiment. It is a rear view of a mixer car. It is a front view of the controller which operates a chute drive device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chute drive device 2 Rotation drive means 3 Elevation drive means 4 Height position detection means 5 Rotation position detection means 6 Control part 7 Controller 10 Base 11 Shaft 15 Motor 16 Reduction gear 17 Hydraulic cylinder 17a Rod 17b Cylinder 18 Hydraulic pressure with electric motor Pump 19 Control valve 21 Left turn button 22 Right turn button 23 Up button 24 Down button 25 Storage button M Mixer vehicle S Chute

Claims (3)

In a chute drive device comprising a turning drive means for turning and driving a chute installed at the rear end of the mixer vehicle so as to be capable of turning and raising and lowering and a raising and lowering drive means for raising and lowering the chute, when a chute storage command is received, the chute The chute drive device is characterized in that the chute is lowered by the elevation drive means and lowered to the retracted height, and the chute is swung in the retracted direction by the swivel drive means and swung to the retracted swivel position to store the chute in the retracted position. . The height position detecting means for detecting that the chute has been lowered to the retracted height and the turning position detecting means for detecting that the chute has been swung to the retracted turning position are provided, and the chute is stored by the height position detecting means. The lift drive means is stopped when it is detected that it has been lowered to a height, and the turn drive means is stopped when the turning position detecting means detects that the chute has turned to the retracted turning position, and the chute is stored in the retracted position. The chute drive device according to claim 1. The chute drive device according to claim 1 or 2, wherein the turning drive means and the elevation drive means can be independently driven by an external operation.

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