JP3624306B2 - Low pollution type road and land traveling vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention comprises a construction work table, a general road traveling vehicle that is loaded with construction materials, and has front and rear iron wheels for traveling on rails such as railway vehicles, and mainly overhead wires in tunnels and underground passages. The present invention relates to a low-pollution type road / railway working vehicle used for inspection and repair of inner walls.
[0002]
[Prior art]
In general, this type of road and land traveling work vehicle has a configuration in which a front and rear iron wheel for running on a rail is mounted on a truck or the like that is a road traveling work vehicle equipped with front and rear wheel tires for road driving. When traveling on the road, the front and rear iron wheels are stored, and when traveling on the rails, the respective steel wheels are lowered and placed on the rails so as to be able to roll, and the front wheel tires are floated, while the rear wheel tires are driven by the rail travel force. Is supposed to give
[0003]
Since such a conventional road-rail traveling work vehicle uses a gasoline engine or a diesel engine as a drive source, in a poorly ventilated environment in a tunnel or an underground passage, filling of exhaust gas is inevitable. For this reason, it not only harms the health of the worker, but also has a disadvantage that it cannot perform highly safe and reliable inspection and repair work, particularly when repair and inspection take a long time.
[0004]
Therefore, in order to carry out reliable inspection and repair work with a high degree of health and safety for workers, a battery that does not generate exhaust gas apart from the normal driving engine for traveling in tunnels with poor ventilation etc. An orbital combined vehicle equipped with a drive motor unit and transmitting the driving force thereby to the drive wheels has been developed and publicly known (for example, JP-A-8-290770).
[0005]
The above-mentioned improved known track-mounted vehicle is the most preferable and excellent because it can perform work on a rail with poor ventilation while ensuring the health management and safe and reliable inspection or repair of the worker. It is.
[0006]
[Problems to be solved by the invention]
However, a battery-powered motor unit that is mounted separately from the engine for normal driving requires a large mounting space, which not only reduces the mounting space for equipment and materials for essential inspection and repair, but also sufficient Since it is not possible to secure a sufficient amount of charge, the time for continuous operation is short, and the required cruising distance cannot be obtained in low-speed operation for inspection, etc. There was a fatal inconvenience that the benefits could not be utilized.
[0007]
In addition, a large pressing force is required to transmit the rotational force from the battery-driven motor unit to the rubber tire via the driving drum so that the rubber tire does not idle with respect to the rail, and this causes a gap between the driving drum and the rubber tire. In addition, since the surface pressure between the rubber tire and the rail is increased, especially the rubber tire and the rail are always accompanied by contact wear, the rubber tire is worn at an abnormally early stage and is forced to be replaced. The rubber tire and the battery are required to be replaced and replaced, and the running cost is high.
[0008]
In addition, when entering the rail from the road and exiting from the rail to the road at a railroad crossing, etc., if there is no flat surface or taxiway wide enough to change the direction of the vehicle, the vehicle can enter smoothly. If the vehicle handle is turned back and forth repeatedly, much of the time is consumed for entering and exiting, and equipment for periodic inspections and repairs as well as for recovery work in the event of an accident. The urgency of bringing in cannot be satisfied.
[0009]
For this reason, a road-rail working vehicle loaded with equipment can be safely and in a short time without the need for a taxiway, even from the nearest narrow railroad crossing that can arrive at the repair and repair point the fastest. Therefore, it is required to be able to escape from the rail on the road in a short time after the work is completed.
[0010]
The present invention provides a road-railing working vehicle that has a long continuous operation time and is highly safe in terms of health for workers and has low running costs even when working inside a long tunnel or the like. One issue . Further, it is a second object to provide a road-rail traveling work vehicle that can travel quickly and safely even when traveling on a rail in a place where the upper surface of the rail is lower than a portion close to the rail, such as a snowy area or a railroad crossing . It is a third object of the present invention to provide a road-rail traveling work vehicle that can safely enter and exit from the rail even in a narrow level crossing.
[0011]
[Means for Solving the Problems]
First , the low-pollution type road and land traveling work vehicle according to the present invention that achieves the first and second problems includes a front wheel tire (1) and a rear wheel tire (2) for traveling on a road, and a front wheel for traveling on a rail. (3) and a rear wheel (4) equipped with a track and road traveling work vehicle,
Separate from the tire traveling drive source comprising a gasoline or diesel engine, a LPG engine (L) as iron ring traveling drive source,
A hydraulic pump (P) driven by the LPG engine (L),
The front iron wheel (3) and the rear iron wheel (4) are provided with an iron wheel drive hydraulic motor (6) that is operated by the hydraulic pump (P ), and the power from the iron wheel drive hydraulic motor (6) is used as an emergency clutch. An iron ring assembly (8) adapted to be transmitted via (H) ,
With
The height of the front iron wheel (3) and the rear iron wheel (4) is determined by the hydraulic cylinder (7) operated by the hydraulic pump (P) , the retracted position when traveling on the road surface, and the guide position when traveling by rail driven by the tire. , And hold control to three positions with the iron wheel drive position by iron wheel drive,
According to the necessity of iron wheel driving, the tire driving power source and the iron wheel driving power source are mutually changed by hydraulic operation control at the same time as the height control of the front iron wheel (3) and the rear iron wheel (4). It is characterized by that.
[0012]
[0013]
More specifically, as described in claim 2 , in the low pollution type road and land traveling work vehicle according to claim 1 , the iron wheel assembly (8) can be moved up and down freely with respect to the chassis frame (S). While being connected by a hydraulic cylinder (71), the height position of the iron ring assembly (8) is a lock member (9) that moves in and out by a lock control cylinder (72) installed in the iron ring assembly (8). ) Is held by a lock receiving member (10) integrated with the set chassis frame (S) so as to be releasably locked, and includes a holding control means for the height positions of the front iron wheel (3) and the rear iron wheel (4). .
[0014]
The low-pollution軌陸combined traveling working vehicle according to the present invention for achieving the third object is the assumption that the process comprises the first and second assignment achievement means, as described in claim 3, front tire The chassis frame (S) between the (1) and the rear tire (2) is provided with lifting and turning means comprising jack means (J) and turntable means (T) controlled by hydraulic means, It is the structure which converted into either a road surface running state and a rail running state by the whole raising / lowering and direction change.
[0015]
As the lifting / lowering turning means, as described in claim 4 , 3 to 3 of jack means (J) connected to the low pollution type road / railway working vehicle with a turntable means (T) in a universal joint configuration. 4 sets together is equipped with, to combine the balance adjustment means on said jack means (J), examples of the balance adjusting means, as described in claim 5, the fixed part or the chassis frame of the jack means (J) (S ) And the turntable (T) of the turntable (11) are connected to each other in a pivoted state, and the interval between the two is enlarged or reduced.
[0016]
[Action and effect of the invention]
According to the low pollution type road and land traveling work vehicle according to the present invention configured as described above, a hydraulic pump (P) and a generator (E) are provided separately from a tire traveling drive source composed of gasoline or a diesel engine. Since the LPG engine (L) as a driving source for the iron wheel running is mounted and the hydraulic motor (6) for driving the iron wheel is driven, the exhaust gas cannot be eliminated at all, unlike the battery-powered driving source. Occurrence can be suppressed to a low level , and the working environment can be improved even in work inside a long tunnel or the like , and safety in terms of the health of the worker can be ensured . In addition, it is possible to obtain a sufficient low travel time and cruising distance, low running costs, and a low-pollution type road / railway working vehicle that is more practical and substantially superior to that of a battery-mounted drive source. be able to.
[0017]
In this type of track-and-rail operation work, which is necessary for this type of track-and-rail work vehicle, the height of the front iron wheel (3) and rear iron wheel (4) is maintained at the guide position and the retracted position with reference to the ground on which the tire runs. Secured by controlling .
[0018]
Also, the height of the front iron wheel (3) and rear iron wheel (4) is maintained at three positions: the retracted position when traveling on the road, the guide position when running on rails driven by tires, and the position for traveling on iron wheels driven by iron wheels. In addition to controlling , the driving force of the LPG engine (L) is reliably transmitted to the front iron wheel (3) and the rear iron wheel (4) by the hydraulic pump (P) and the iron wheel drive hydraulic motor to drive the wheel on the rail. Make sure that it is safe and secure.
[0019]
In addition, since the wheel is set at a position for iron wheel driving by iron wheel driving and the tire is maintained at a high position, the front wheel is driven by an LPG engine (L) as a driving source for driving traveling when traveling on a rail in a snowy area. (3) and can drive the travel by the rear iron wheels (4), occurs when the tire driving cars, a driving safety by eliminating the derailment due riding of the tire on snow rail adjacent position written by wedge plow Can be increased.
[0020]
Furthermore, the chassis frame (S) between the front wheel tire (1) and the rear wheel tire (2) is provided with lifting / lowering turning means, and jack means (J) connected with the turntable means (T) with a universal joint configuration. Are connected to the jack means (J) with its fixed part or chassis frame (S) and the turntable (T) of the turntable (11) in a pivoted state, Since the distance between the two is increased or reduced, the entire vehicle is lifted with jacking means (J) at the nearest narrow railroad crossing that can arrive at the repair and repair site the fastest on the railroad-powered work vehicle loaded with equipment. Rotating with turntable means (T) and then descending and reverse operation, securing the guideway etc. by entering on the rail from the road and exiting from the rail after the work is completed on the road It can be done safely and in a short time.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
And [Example]
The drawing schematically shows a four-wheel-wheel drive type low pollution type road and land traveling work vehicle according to an embodiment of the present invention .
[0022]
The four-wheel-wheel drive type low-pollution road and land traveling work vehicle according to the illustrated embodiment is equipped with a front wheel tire (1) for road traveling, a rear tire (2) for a double tire type, and a total displacement of 4985. A vehicle consisting of a cc Isuzu diesel engine (maximum output 150ps / 3100rpm) has been remodeled into a low-pollution type road / railway working vehicle, and the remodeled part is used for rail travel behind the front wheel tire (1). The front iron wheel (3) whose height is controlled by the front iron wheel height position control unit (A), and the rear wheel height , as described above, at the rear of the rear wheel tire (2). The rear iron wheel (4) controlled by the position control section (B) is further turned between the front wheel tire (1) and the rear wheel tire (2) with the jack means (J) controlled by hydraulic means. Ascending and descending turning means comprising table means (T) and having balance adjusting means, The chassis frame (S) is used to equip the chassis frame (S) with a material loading space (20), and a 1.5 KVA generator (E), hydraulic pump (P) and LPG gas tank (G ) Equipped with LPG engine (L) (maximum output 24.3KW / 1800rpm), folding work table (22) made of aluminum instead of iron for weight reduction, with struts (21) Each part will be described in detail below.
[0023]
First, the tire will be described. The positional relationship between the front tire (1) and the rear tire (2) of the double tire type, and the front iron wheel (3) and the rear iron wheel (4) is the same as that in the prior art. That is, the front tire (1) and the rear tire (2) are not specially modified, and the inner width of the rear tire (2) matches the parallel width of the rail (R).
[0024]
If the rear tire (2) is a single tire model or if the inner tire width interval of the double tire does not match the rail width interval, the tire width interval is set via the spacer when attaching the tire. Of course, it is adjusted so as to match the interval.
[0025]
Next, the front iron wheel (3), the rear iron wheel (4) and the holding control means for these height positions will be explained. As shown in FIGS. 3 and 4, the front iron wheel (3) and the rear iron wheel (4) The pair of front iron wheels (3) constitutes a front iron ring assembly (8) in which power from the iron wheel driving hydraulic motor (6) is transmitted via the emergency clutch (H), As shown in FIG. 1, the front wheel height position control in the width direction between the loading section (C) and the cab (D) in which the LPG engine (L) and the folding work table (22) are provided in a hierarchical manner. As shown in FIGS. 3 and 4, the front iron ring assembly (8) is moved up and down in conjunction with a lifting hydraulic cylinder (71) as shown in FIGS. ) Is held and controlled in three positions: a retracted position (a) when traveling on a road surface with tires, a guide position (b) when traveling with a rail driven by tires, and a position (d) for traveling with iron wheels. Become That.
[0026]
As shown in FIGS. 1, 5 and 6, the pair of rear iron wheels (4) is also configured so that the power from the iron wheel driving hydraulic motor (6) is transmitted via the emergency clutch (H). The rear wheel assembly (8) is configured as a rear wheel height position control unit (B) below the rear portion of the loading portion (C) of the traveling vehicle, and the rear wheel assembly (8) The rear hydraulic wheel (4) is moved up and down in conjunction with the lifting hydraulic cylinder (71), the retracted position (a) when traveling on the road surface by the tire, the guide position (b) when traveling on the rail driven by the tire, and the iron wheel drive The holding control is performed at three positions (see FIG. 5) with the iron wheel traveling position (d).
[0027]
The front iron wheel (3) and the rear iron wheel (4) are moved in and out from the lock control cylinder (72) provided in each iron wheel assembly (8) separately from the lifting hydraulic cylinder (71). A lock receiving member (10) in which a locking member (9) that operates in a bell crank shape is vertically fixed with the chassis frame (S) as a base, and a receiving portion (10a) is formed at a height setting interval of the iron ring. The receiving wheel (10a) is supported and locked so that the height of the iron wheel includes a retracted position when traveling on the road surface, a guide position when traveling by rail driving by a tire drive, and a position for traveling by iron wheel using an iron wheel drive. Three positions are secured.
[0028]
In addition, considering the prevention of derailment accidents at railroad crossings where the upper surface of the rail (R) is lower than the road surface, the height of each steel wheel at such a railroad crossing is used for traveling on an iron wheel drive regardless of the driving force transmission. As the height position (d), the front and rear tires are higher than the road surface and are completely lifted from the rail (R) so that they can pass by running inertia due to the front iron wheel (3) and the rear iron wheel (4).
[0029]
In this embodiment, the third problem, that is, the roadside working vehicle loaded with the equipment or after the work is repaired, at the nearest narrow railroad crossing that can arrive at the repair site, etc., from the road. Chassis frame (S) between front wheel tire (1) and rear wheel tire (2) so that entry onto the rail and escape from the rail after completion of work to the road can be performed quickly and safely Is equipped with lifting and turning means. This elevating and turning means includes three or more sets of jack means that are controlled to extend and contract by hydraulic means and also have a balance adjusting means for raising and lowering and changing the direction of the entire vehicle to convert to either a road running state or a rail running state. (J) and a set of turntable means (T) including a turntable (11) that rotates via a bearing with respect to a planar rectangular base (12) that is a ground contact portion.
[0030]
The lifting / lowering means is composed of three or more sets of jack means (J) and a set of turntable means (T) so as to be suitable for lifting the vehicle on average, and these include a front wheel tire (1) and a rear wheel. Installed in the chassis frame (S) on the left and right of the center of gravity in the front-rear direction, avoiding the propeller shaft, on the lower surface between the tires (2), to control the up and down (lift) and turn of the entire vehicle Auxiliary that is pivotally attached to the chassis frame (S) at the base end on the cylinder side and to the peripheral edge of the turntable (11) at the extension end to allow rotation in the tilt direction. The fixed side of a pair of main hydraulic cylinders (74) each having a cylinder (73) is fixed to the chassis frame (S) and the movable side extends downward, and the tip of the movable side is turned to the turntable. Adapted to the turntable (11) of the means (T) to the forward / backward inclination based on the traveling direction of the vehicle And a locking cylinder (not shown) for securing the extension of the jack means (J) or the retracted state of the turntable means (T).
[0031]
The balance adjusting means of the jack means (J) has a structure in which the other fixed portion or the chassis frame (S) and the turntable (T) of the turntable means (T) are connected in a pivoted state. Alternatively, the distance between the chassis frame (S) and the turntable (11) is enlarged / reduced, but the expansion / contraction or link mechanism of the auxiliary cylinder (73) can be confirmed by the biaxial tilt confirmation means that can be confirmed by a level or a horizontal sensor. It is good also as a means to control.
[0032]
[0033]
In addition, each hydraulically-operated device in the low-pollution type road and land traveling work vehicle according to the embodiment of the present invention is connected to the hydraulic pump (P) driven by the LPG engine (L), and is interposed in the piping path. The movement of each part is adjusted and controlled by the switching valve, the control valve, etc., but the control system hydraulic piping diagram is shown in FIG.
[Brief description of the drawings]
FIG. 1 is a side view of a low-pollution type road and land traveling work vehicle according to an embodiment of the present invention.
FIG. 2 is a rear view of a low-pollution type road and land traveling work vehicle according to an embodiment of the present invention .
FIG. 3 is a partial view of the front wheel height position control unit (A) as viewed from the side, with the guide position omitted and the iron wheel traveling position and the storage position .
FIG. 4 is a partial side view showing the front wheel height position control unit (A) viewed from the width direction of the vehicle, omitting an intermediate portion of the vehicle .
FIG. 5 is a partial explanatory view showing the rear wheel height position control unit (B) as viewed from the width direction of the vehicle.
FIG. 6 is a partial side view showing a rear iron wheel height position control unit (B) as an iron wheel traveling position .
FIG. 7 is an explanatory view of a lifting / lowering turning means .
FIG. 8 is a control system hydraulic piping diagram of each hydraulic operating device in the low pollution type road and land traveling work vehicle according to the embodiment.
[Explanation of symbols]
(L) LPG engine
(A) Front wheel height position controller
(B) Rear wheel height position controller
(1) Front wheel tire
(2) Rear wheel tire
(3) Front wheel
(4) Rear iron wheel
(6) Iron wheel drive hydraulic motor
(7) Hydraulic cylinder
(71) Lifting hydraulic cylinder
(72) Cylinder for lock control
(8) Iron ring assembly
(9) Lock member
(10) Lock receiving member
(11) Turntable
(J) Jacking means
(T) Turntable means
(E) Generator
(S) Chassis frame
(P) Hydraulic pump
(G) LPG gas tank

Claims (5)

A road and land traveling vehicle equipped with front wheel tires (1) and rear wheel tires (2) for running on the road, and front iron wheels (3) and rear iron wheels (4) for running on the rails ,
Separate from the tire traveling drive source comprising a gasoline or diesel engine, a LPG engine (L) as iron ring traveling drive source,
A hydraulic pump (P) driven by the LPG engine (L),
The front iron wheel (3) and the rear iron wheel (4) are provided with an iron wheel drive hydraulic motor (6) that is operated by the hydraulic pump (P ), and the power from the iron wheel drive hydraulic motor (6) is used as an emergency clutch. An iron ring assembly (8) adapted to be transmitted via (H) ,
With
The height of the front iron wheel (3) and the rear iron wheel (4) is determined by the hydraulic cylinder (7) operated by the hydraulic pump (P) , the retracted position when traveling on the road surface, and the guide position when traveling by rail driven by the tire. , And hold control to three positions with the iron wheel driving position by iron wheel drive,
According to the necessity of iron wheel driving, the tire driving power source and the iron wheel driving power source are mutually changed by hydraulic operation control at the same time as the height control of the front iron wheel (3) and the rear iron wheel (4). A low-pollution type road and land working vehicle characterized by The wheel assembly (8) is connected to the chassis frame (S) by a lifting hydraulic cylinder (71) so as to be movable up and down, and the height of the wheel assembly (8) is connected to the wheel assembly (8). the locking member infested or swings equipped allowed the lock control cylinder (72) (9), by the set chassis frame (S) and integral lock receiving member (10), releasably locking the support, before The low-pollution type road and land traveling work vehicle according to claim 1, further comprising holding control means for height positions of the iron wheel (3) and the rear iron wheel (4) . The chassis frame (S) between the front wheel tire (1) and the rear wheel tire (2) is provided with lifting / lowering means comprising jack means (J) and turntable means (T) controlled by hydraulic means. The low-pollution type road / land use traveling work vehicle according to claim 1 , wherein the vehicle is converted into either a road surface traveling state or a rail traveling state by raising and lowering and changing the direction of the entire vehicle. 4. Low pollution according to claim 3 , wherein three to four sets of jack means (J) connected with the turntable means (T) in a universal joint configuration are provided, and the jack means (J) is also provided with a balance adjusting means. Type track and land traveling vehicle. The balance adjusting means is configured to connect the fixed part of the jack means (J) or the chassis frame (S) and the turntable (11) of the turntable means (T) in a pivoted state, and to enlarge or reduce the distance between the two. The low-pollution type roadway combined traveling work vehicle according to claim 4 .

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