JP2008195309A - Insensitive structure of horizontal control device in track traveling vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent any wasteful operation of a posture control mechanism in a vicinity of a critical angle sensed by an inclination sensor by making the inclination sensor insensitive when the posture of an engine or the like is horizontally controlled by the inclination sensor. <P>SOLUTION: In a horizontal control device in a track traveling vehicle, a specified vehicle and/or a section of the track traveling vehicle traveling on a track is longitudinally tilted by a tilting mechanism, an inclination sensor for sensing the inclination is fitted to the vehicle and/or the section, and the tilting mechanism is operated by the output of the inclination sensor to return the vehicle and/or the section in a horizontal condition. An insensitive structure of the horizontal control device in the track traveling vehicle is characterized in that the tilting mechanism is not operated in an inclination of a predetermined range by adjusting the output of the inclination sensor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, when a rail vehicle traveling on a rail laid on an inclined ground or the like approaches a steep slope, the tilting mechanism is used to return the posture of the engine or the like that is not good to the state to a horizontal position. The present invention relates to a sensitivity desensitizing structure in which a tilting mechanism is not operated by appropriately spoiling a sensing signal for sensing the critical tilt in a horizontal control device.

  In orchards opened on the slopes of mountains, etc., to transport harvests, materials, personnel, etc., or to perform various horticultural work, a rail (many single rails) are erected from the base to the destination. In some cases, the traveling vehicle may travel along this rail. Rails laid on such terrain are repeatedly uphill and downhill, and are often steep (about 45 °). By the way, this kind of rail travel vehicle consists of a tow vehicle and a cargo cart, and many tow vehicles have an engine of an internal combustion engine as a driving source. Thus, if the engine is tilted too much, inconvenience occurs.

  Specifically, the engine oil in this type of engine (4 cycles) is supplied by pumping up the oil provided in the oil reservoir with a scooping mechanism linked to the crank rod. This scooping mechanism will not function sufficiently, resulting in oil supply failure and seizure. Further, since the fuel is supplied by the intake air sucked from the carburetor, the position of the carburetor becomes a position above the fuel tank, or the internal float causes malfunction, thereby causing a fuel supply defect. In addition, when the fuel tank is full, the fuel leaks from the cap portion, so that the fuel can be put in little by little, and it is necessary to refuel again.

  Therefore, the present applicant has proposed a horizontal holding structure that always corrects the attitude of the engine even if there is an inclination (Patent Document 1). In this system, the engine is installed so that it can be tilted back and forth by a tilt mechanism, and the tilt is judged by a tilt sensor or human eyes, and the tilt mechanism is operated to return to a horizontal posture. Among these, when the tilt mechanism is controlled by the tilt sensor, when the tilt sensor senses a predetermined tilt (critical angle) of the engine and generates a sensing signal, the tilt mechanism is activated to return the engine posture to horizontal. When the attitude of the engine falls within a predetermined inclination, the operation of the tilting mechanism is stopped.

For this reason, in the vicinity of the critical angle at which the tilt sensor emits a sensing signal, the tilting mechanism is repeatedly activated and stopped every time it enters and exits this angle. Therefore, the operation of the equipment increased, and the posture correction was not so much expected. In addition, frequent occurrence of such a situation leads to waste of energy as well as wear of contacts of electrical parts, wear of brushes of electric motors, and mechanical wear of movable parts. The above is about the engine, but it is the same whether it is a seat or a cabin, and it is the same even if it is a vehicle itself.
Japanese Patent Application No. 2000-267920

  In the present invention, the tilt mechanism is not operated within a critical angle that does not cause a problem even if it is tilted, that is, the sensitivity of the tilt sensor is insensitive to eliminate equipment consumption and energy waste. is there.

  Under the above problems, the present invention makes it possible to tilt a specific vehicle or / and part of a rail traveling vehicle traveling on a rail according to claim 1 back and forth by a tilting mechanism, and In a horizontal control device for a rail vehicle, in which a tilt sensor for detecting tilt is attached to the part and the tilting mechanism is operated by the output of the tilt sensor to return the vehicle or / and the part to the horizontal level, the sensing signal of the tilt sensor Thus, there is provided a sensitivity desensitization structure for a horizontal control device in a rail vehicle in which the tilt mechanism is inactivated in a certain range of tilt.

  In this, the present invention prepares three inclination sensors for neutral, upstream and downstream, which generate a sensing signal when a certain inclination (critical angle) is detected, as described above, and for upstream and downstream. The tilt sensor is mounted in advance with a pre-tilt in the up and down directions, and the tilt mechanism in the up tilt is operated in the AND state of the sensing signals of the neutral and up tilt sensors, and the tilt in the down tilt The mechanism operates in the AND state of the sensing signals of the neutral and descending tilt sensors. Alternatively, the mechanism according to claim 3, wherein the critical angle for generating the sensing signal is an upward and downward tilt sensor. The means is smaller than the neutral inclination sensor, and the rail traveling vehicle described in claim 4 is a rail traveling vehicle on which the towing vehicle pulls the carriage and travels forward and backward. Tow car An engine provided, in which the tilting mechanism is provided with means for tilting back and forth of the engine with telescopic cylinder.

  According to the first aspect of the present invention, when the vehicle or part is tilted less than the critical angle, the tilt mechanism for posture control does not operate. In other words, since the sensitivity has been desensitized, the device reacts and wears out and the waste of energy can be eliminated. Further, according to the means of claim 2 or 3, a simple device configuration is sufficient, and according to the means of claim 4, it is possible to control the attitude of the engine with a simple structure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a rail traveling vehicle according to the present invention. A rail 1 is supported on a ground by a column 2 and provided at a constant height. The rail 1 in this example is a single rail, and is laid with straight lines and curves to the destination along the slope of the ground. A traveling vehicle 3 is placed on the rail 1 and travels using the rail 1 as a guide. The traveling vehicle 3 in this example is divided into a towing vehicle 4 and a loading cart 5, and loads the loading cart 5 and pulls it by the towing vehicle 4. For this purpose, the towing vehicle 4 is equipped with an engine 7, a mission 8, and various kinds of operation tools 9 on a frame 6, and the cart 5 has a frame 10 on which a load can be loaded. The vehicle 4 is connected by a tow bar 11.

  Both the towing vehicle 4 and the loading cart 5 are mounted on the single rail 1 without falling down. FIG. 2 is a cross-sectional view of the main part of the undercarriage of the transport vehicle 3 showing this, but the rail 1 has a square cross section, and a rack 12 having a width smaller than the width is affixed to the back surface thereof. It is installed. A support wheel 13 and a drive wheel 14 that sandwich the rail 1 from above and below are attached to the frame 6 of the towing vehicle 4. Among these, the support wheel 13 includes a body portion 13 a mounted on the upper surface of the rail 1 and a flange 13 b extending to the side surface of the rail 1, and the drive wheel 14 is connected to both the pinion 14 a meshing with the rack 12 and the outside of the rack 12. The body 14b applied to the lower surface of the rail 1 and the flange 14c extending to the side surface of the rail 1 are used, and derailment and the like can be prevented by sandwiching the rail 1 from above and below.

  An upper wheel 15 and a lower wheel 16 having the same structure as described above are also provided in the frame 10 of the cart 5 so that derailment and the like are prevented. In this example, the cart 5 does not require self-propelling ability, and the lower wheel 16 is not provided with a pinion. By the way, the above is a single-rail type that supports weight and travels with a single rail 1, but may be a multiple-rail type that lays weight-supporting rails on both sides of the rail 1. .

  As described above, when the driving wheel 14 of the towing vehicle 4 is driven by the power of the engine 7, the traveling vehicle 3 including the towing vehicle 4 and the loading cart 5 travels along the rail 1. However, since the rail 1 is usually inclined forward and backward, if it remains as it is, the posture of the engine 7 and the like changes and various problems occur as described above. Therefore, even if the rail 1 is inclined, the engine 7 can be tilted back and forth so that the engine 7 can be held horizontally, and this can be operated by the tilt mechanism 24.

  FIG. 3 is a cross-sectional view of the main part of the towing vehicle 4 showing the tilting mechanism 17, and FIG. 4 is a vertical cross-sectional view. First, a horizontal support shaft 17 extending left and right on the frame 6 is supported by a bracket 18. The engine 7 is supported by the support shaft 17. Specifically, a boss 19 is rotatably fitted to the support shaft 17, and an arm 20 is extended from the boss 19 to support the base 21 of the engine 7. A lever 22 is projected below the boss 19, and an extension cylinder (electric cylinder in this example) 23 fixed to the frame 6 is connected to the lever 22. Thus, if the telescopic cylinder 23 is expanded and contracted, the engine 7 can be tilted back and forth, so that the posture can be controlled. It should be noted that the telescopic cylinder 23 at this time needs to be locked at that position so that the amount of expansion and contraction does not change even when an external force is applied to the engine 7.

  By the way, normally, the power of the engine 7 is transmitted to the mission 8 by the belt 26. That is, the centrifugal crack of the engine 7 is transmitted as an output shaft 27 from a pulley 28 provided on the output shaft 27 to a pulley 30 fitted to the input shaft 29 of the transmission 8 by the belt 26. With the above-described configuration, the engine 7 is moved back and forth. The length of the belt 26 is changed by tilting, which is not good. Therefore, in this example, the idle pulley 31 is attached to the support shaft 17 described above, and this idle pulley 31 is used as a relay point of the belt 26 to cope with this. Specifically, the upstream belt 26A that hangs the belt 26 between the output pulley 28 and the idle pulley 31 of the engine 7 and the downstream belt 26B that hangs between the idle pulley 31 and the input pulley 30 of the transmission 8. It is divided into and. In addition, as the tilting mechanism 24, the output shaft 27 itself may be the support shaft 17.

  In the present invention, the tilt mechanism 24 described above is operated by the tilt sensor 25 attached to the engine 7 or the like. The tilt sensor 25 of this example is configured to automatically generate an electrical signal when a certain angle (this is called a critical angle) is tilted, and to stop the signal transmission when it falls within the critical angle (OMRON Corporation). The control device (not shown) reads this sensing signal and expands and contracts the telescopic cylinder 23 in a predetermined direction and amount so as to return the attitude of the engine 7 to a horizontal position. Specifically, as the inclination sensor 25, three identical sensors that emit a sensing signal at a critical angle of ± 13 ° are prepared, one is a neutral inclination sensor 25A, and the remaining one is an upstream sensor. They are used as the inclination sensor 25B and the downward inclination sensor 25C. FIG. 5 is an explanatory diagram showing the state of attachment of these inclination sensors 25. The inclination sensor 25A for neutrality is attached horizontally, but the inclination sensors 25B and 25C for upward and downward use 7 ° (this) (Referred to as a pre-angle) and tilted upward or downward.

  Next, the relationship between the inclination detection by the inclination sensors 25A to 25C and the driving of the inclination mechanism 24 will be described. FIG. 6 is an explanatory view showing the operation of the inclination sensors 25A to 25C and the movement of the telescopic cylinder 23 of the inclination mechanism 24. Basically, however, the telescopic cylinder 23 is configured such that the neutral tilt sensor 25A senses the critical angle and the upward or downward tilt sensors 25B and 25C sense the critical angle. The sensor signal is activated when the detected signal is in an AND state. That is, when the rail 1 is tilted by 6 ° during the upward tilt, the upward tilt sensor 25B has a pre-angle of 7 °, so that the tilt angle is 13 °, which is detected as a critical angle and a sensing signal is generated. However, since the neutral inclination sensor 25A is still 6 °, it is not detected as a critical angle, and no detection signal is generated. Therefore, at this time, the telescopic cylinder 23 is not yet operated (since the sensing signals of the two inclination sensors 25A and 25B are not in the AND state), and the attitude of the engine 7 is not corrected.

  When the inclination of the rail 1 is further increased to 13 °, the neutral inclination sensor 25A detects a critical angle and generates a detection signal, and the detection signal of the upward inclination sensor 25B enters an AND state. . In this state, the telescopic cylinder 23 is shortened and the posture of the engine 7 is returned to the horizontal. It should be noted that once the neutral inclination sensor 25A issues a detection signal, the state is self-maintained and continues until the upward or downward inclination sensors 25B and 25C no longer sense the critical angle. That is, the upward inclination sensor 25B generates a start signal for the telescopic cylinder 23, and the neutral inclination sensor 25A outputs an end signal. Accordingly, the correction of the engine 7 to the horizontal posture continues during this state, and when the posture of the engine 7 becomes less than 6 °, the telescopic cylinder 23 stops operating. The operation of the telescopic cylinder 23 is stopped even if the inclination of the rail 1 is actually less than 6 °. Therefore, the posture correction of the engine 7 stops after all because the posture is corrected and is less than 6 °. The inclination of the rail 1 is less than 6 °.

  The above is the same even when the rail 1 is inclined downward, and when the downward inclination of the rail 1 is 13 °, the telescopic cylinder 23 is operated and the posture of the engine 7 is returned to the horizontal. And if the attitude | position of the engine 7 is corrected and it will be less than 6 degrees, or the inclination of the rail 1 will be less than 6 degrees, the action | operation of the expansion-contraction cylinder 23 will stop, and the engine 7 will be fixed to the attitude | position. From the above, if the attitude of the engine 7 or the inclination of the rail 1 is less than ± 6 °, the tilting mechanism 24 does not react, and no unnecessary operation is performed during this time. It is called. Even in such a case, there is no problem for the engine 7 with the inclination posture within about ± 6 °.

  FIGS. 7 to 10 are circuit diagrams showing this state. When the upward inclination sensor 25B detects the critical angle, the contact is closed and a current flows through the coil U1 of the relay U1 (FIG. 7). Close the contact u1. Next, when the neutral inclination sensor 25A senses the critical angle, the contact is closed, a current flows through the coil H1 of the relay H1 (FIG. 9), and the open contact h1 is closed. In this state, a current flows through the coil U2 of the relay U2 that controls the driving of the motor (not shown) that is the driving source of the telescopic cylinder 23, the open contact u2 is closed, the motor is driven, and the telescopic cylinder 23 is operated. Thus, the posture of the engine 7 is returned to the horizontal. At this time, the operation of the neutral inclination sensor 25A is held by the open contact u2 of the relay U2, and continues until the upward inclination sensor 25B stops operating or the downward inclination sensor 25C operates (FIG. 10). .

  The same applies to the downward inclination sensor 25C. When a critical angle is detected, the contact is closed and a current flows through the coil D1 of the relay D1 (FIG. 8), and the open contact d1 is closed. When the inclination sensor 25A senses the critical angle, the contact is closed and a current flows through the coil H1 of the relay H1 (FIG. 9), and the open contact h1 is closed. In this state, a current flows through the coil D2 of the relay D2 that controls the driving of the motor, which is the driving source of the telescopic cylinder 23, the open contact d2 is closed, the motor is driven, the telescopic cylinder 23 is operated, and the engine 7 The posture is returned to the horizontal. The operation of the neutral inclination sensor 25A at this time is self-held by the open contact d2 of the relay D2, and continues until the downward inclination sensor 25C stops operating or the upward inclination sensor 25B operates (FIG. 10). .

  The above is the basic form of the present invention, and the present invention is not limited to this. For example, the critical angle is not limited to ± 13 °, and it is not limited to the engine that controls the posture horizontally, but may be a seat or the like, or the entire vehicle in some cases. Further, the actuator of the tilt mechanism is not limited to the electric cylinder, and may be a fluid pressure cylinder or the like. Further, the pre-angle of the tilt sensor is the same for both the upward and downward directions, but it may be different. Similarly, the tilt angles for the uphill, the downhill, and the neutral may have different critical angles to be sensed. Specifically, the tilt sensor for ascending and descending may have a smaller angle perceived as the critical angle than the tilt sensor for neutral, and according to this, it is possible that no pre-angle is required. become.

It is a side view of a rail travel vehicle. It is a cross-sectional view around the drive wheel of the rail vehicle. It is a cross-sectional view around the support shaft of the rail vehicle. It is a longitudinal cross-sectional view around the support shaft of a rail vehicle. It is a schematic diagram of inclination sensor attachment. It is explanatory drawing which shows the relationship between an inclination sensor and a tilting mechanism. It is a circuit diagram which controls the action | operation of an inclination sensor and an expansion-contraction cylinder. It is a circuit diagram which controls the action | operation of an inclination sensor and an expansion-contraction cylinder. It is a circuit diagram which controls the action | operation of an inclination sensor and an expansion-contraction cylinder. It is a circuit diagram which controls the action | operation of an inclination sensor and an expansion-contraction cylinder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rail 2 Support | pillar 3 Traveling vehicle 4 Towing vehicle 5 Cargo truck 6 Frame 7 Engine 8 Mission 9 Operation tool 10 Frame 11 Connector 12 Rack 13 Support wheel 13a 〃 Body 13b フ ラ ン ジ Flange 14 Drive wheel 14a ピ Pinion 14b 〃 Body 14c flange 15 upper wheel 16 lower wheel 17 spindle 18 bracket 19 boss 20 arm 21 base 22 lever 23 telescopic cylinder 24 tilting mechanism 25 tilt sensor 25a neutral tilt sensor 25b upward tilt sensor 25c downward 26 Belt 26A Upstream belt 26B Downstream belt 27 Output shaft 28 Pulley 29 Input shaft 30 Pulley 31 Idle pulley

Claims (4)

  A specific vehicle or / and part of a rail vehicle traveling on the rail can be tilted back and forth by a tilting mechanism, and a tilt sensor is attached to the vehicle or / and part to sense the tilt, and the output of the tilt sensor In a horizontal control device for a rail vehicle that operates the tilting mechanism to return the vehicle or / and the part to a horizontal position, the tilting mechanism is disabled in a certain range of tilt by adjusting the sensing signal of the tilt sensor. A sensitivity desensitization structure of a horizontal control device in a rail vehicle characterized by the above.   Three inclination sensors that generate a detection signal when a certain inclination (critical angle) is detected are prepared for neutral, upward, and downward, and the upward and downward inclination sensors are only pre-angled in the upward and downward directions. The tilting mechanism for the uphill tilt is operated in the AND state of the sensing signals of the neutral and uphill tilt sensors, and the tilting mechanism for the downhill tilt is used for the sensing signals of the neutral and down tilt sensors. The sensitivity desensitization structure of the horizontal control apparatus in the rail vehicle according to claim 1, wherein the structure is operated in an AND state.   3. The sensitivity desensitizing structure for a horizontal control device in a rail vehicle according to claim 2, wherein a critical angle for generating a sensing signal is smaller for an upward inclination sensor and a downward inclination sensor than for a neutral inclination sensor.   The track traveling vehicle is a rail traveling vehicle in which the towing vehicle travels by pulling the carriage on the rail, and the engine that can be tilted back and forth is an engine provided in the towing vehicle. The sensitivity desensitization structure of the horizontal control apparatus in the rail traveling vehicle according to any one of claims 1 to 3, which is tilted.