JP2002160546A - Vehicle power system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle power system capable of producing a high power, without damaging an existing vehicle structure. SOLUTION: A standard alternator is provided in the engine room 27 of a vehicle 11, which has a pair of brackets 31, 31 for mounting a rear guard 32 on the rear of a vehicle body 12. The space formed between the brackets 31, 31 is utilized for mounting of an additional alternator 51, which is driven by a PTO shaft(Power Transmission Output Shaft) via a belt drive mechanism 63.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular power generator having a plurality of power generators.

[0002]

2. Description of the Related Art An alternator (alternating current generator) mounted on a construction machine or the like is disposed integrally with an engine in an engine room, extracts power from a crankshaft of the engine, and rotates a fan for cooling the engine. The fan belt is used to rotate the alternator together with the fan to generate electricity.

An alternator of a construction machine is usually mounted by using an open-type alternator for heat radiation (cooling). However, in a work site where a large amount of dust is generated or where salt damage occurs, the alternator is closed. It is necessary to attach a type (shield type) alternator.

[0004] This hermetic alternator cannot be improved in heat radiation efficiency and is used only in construction machines requiring a relatively low current of about 35 amperes.

[0005]

Therefore, when an additional light for working in a dark place or an air conditioner is mounted on a cab of a construction machine using a hermetic alternator, three cabs are required.
At about 5 amps, there is a problem that the current is insufficient and the battery is likely to rise.

On the other hand, to develop a sealed high-output alternator of, for example, more than 35 amps, which can be used even in a site where a large amount of dust or salt damage occurs,
There are many problems in terms of cost, and there is a problem that the size becomes large and cannot be mounted in the engine room of the vehicle.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to install a power generator for a vehicle having a substantially high output without damaging an existing vehicle structure.

[0008]

According to a first aspect of the present invention, there is provided a power generator installed in an engine room of a vehicle and an engine power installed at a rear portion of the vehicle and protruding from a rear end of the vehicle. A power generator for a vehicle comprising: the one generator driven by the take-out shaft and the other generator separately from the one generator; in this way, without changing one generator in the engine room, Since the other generator is additionally installed and driven by the engine power take-off shaft, a substantially high-output vehicle generator can be installed without damaging the existing vehicle structure such as the engine room, and the large-sized high-output No generator is required.

According to a second aspect of the present invention, in the vehicle power generating device according to the first aspect, one of the generators and the other generator are each a sealed alternator. It can also be used at work sites where salt damage occurs.

According to a third aspect of the present invention, in the vehicle power generator according to the first or second aspect, a belt transmission mechanism for transmitting torque from an engine power take-off shaft to the other generator, and a belt of the belt transmission mechanism are provided. A belt tension adjusting mechanism that moves and adjusts the other generator in the direction of variably adjusting the tension. The belt tension of the belt transmission mechanism is adjusted by moving and adjusting the other generator by the belt tension adjusting mechanism. Since it is reliably variably adjusted, the torque of the engine power take-off shaft is appropriately transmitted to the other generator.

According to a fourth aspect of the present invention, in the vehicle power generator according to any one of the first to third aspects, the vehicle is a tractor for a construction machine capable of mounting a cab on a vehicle body. Tractor is provided with a pair of brackets at the rear of the vehicle body, and the other generator is disposed between the pair of brackets, and effectively utilizes the empty space between the pair of brackets at the rear of the vehicle body. By installing an additional generator, it is possible to add a cab light for working in dark places due to mounting the cab on the vehicle body, and to adopt an air conditioner specification cab.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a tractor for a construction machine as a vehicle (hereinafter simply referred to as a tractor 11). The tractor 11 has a traveling device 13 provided on the left and right portions of a vehicle body 12.

The traveling device 13 is provided with a sprocket 14, an idler 15 and a guide roller 16 on both sides of the vehicle body 12, respectively, around which a crawler belt, that is, a track 17, is mounted and driven by the sprocket 14.

Further, a base end of an arm 23 is rotatably supported by a pin 22 on each of frame members 21 which support the guide rollers 16 and the like on both sides of the vehicle body 12. A blade (not shown) that can be moved up and down by a hydraulic cylinder (not shown) is mounted. When the blade is configured to perform the soil discharging action in the forward and backward movements, the blade is a two-way dozer.

The tractor 11 has a driver's seat 24 on the vehicle body 12.
An operation lever 25, a pedal 26, and the like, which are operated by an operator sitting in the driver's seat 24, are provided. An engine room 27 is further provided in front of the operation lever 25, and an engine (not shown) is provided in the engine room 27. Is stored.

A cab 28 for protecting an operator can be mounted on the vehicle body 12. This cab 28 has
Electrical equipment such as a cab light 29 for working in a dark place, an air conditioner for air conditioning in the cab, room lights, and electric wipers for front and rear windows (all not shown) are provided.

As shown in FIG. 1, the tractor 11 has a pair of brackets 31, 31 attached to a rear portion of the vehicle body 12, as shown in FIG. The pair of brackets 31, 31 is a rear guard formed into an oval shape by a steel pipe.
32 is a welded rear guard bracket.
As shown in FIG. 2, engagement holes 33 for engaging a vehicle suspension hook or wire are formed in the upper portions of the pair of brackets 31, 31, respectively.

As shown in FIGS. 3 and 4, a pair of rear guard mounting brackets 31, 31 are integrally formed with mounting plates 34 at the upper and lower portions of the vehicle body 12 side. Since a bolt insertion hole 35 is formed in the body 34, the mounting plate portion 34 is fastened to a mounting counterpart member 37 on the vehicle body 12 side by a bolt 36, so that the pair of brackets 31, 31 Fixed to. As shown in FIG. 3, a pair of brackets
31 and 31 are connected by an upper rib material 38 and a lower rib material 39 for reinforcement.

In the engine room 27 of the tractor 11, a standard alternator 41 as one generator as shown in FIGS. 5 and 6 is provided. The standard alternator 41 is an existing hermetic AC generator that can cope with work sites where dust and salt damage occur.

The standard alternator 41 is mounted on a front housing cover 42 at the front of the engine via a mounting plate 43 through a mounting plate 43. The standard alternator 41 is rotated by a rotating support shaft 45 inserted into the bearing 44. 1 protruding at the bottom of 41
A pair of mounting plates 46 are rotatably supported, and a mounting plate 47 protruding above the standard alternator 41 is inserted into an arc groove 51 of a support arm 49 which is supported by a support member 48 at a fixed position. It is fixed by the bolt 52 provided.

A pulley 54 fitted to a shaft member 53 connected to the crankshaft of the engine and protruding from a lower portion of the front housing cover 42, a pulley 55 for driving a fan for cooling the engine, and a standard alternator
Endless belt with pulley 57 fitted to drive shaft 56 of 41
The pulleys 55 and 57 are rotated by the power transmitted from the pulley 54 of the shaft member 53 to the belt 58, and a fan and a standard alternator 41 coaxial with the pulleys 55 and 57
Are rotated to generate AC power. The pulleys 54, 55, and 57 use V pulleys, and the belt 58 uses a V belt.

The standard alternator 41 loosens the bolt 52 and adjusts the rotation in the clockwise direction in FIG. 5 with the rotation support shaft 45 as a fulcrum, thereby applying tension to the belt 58 and setting the bolt at a position where an appropriate tension can be maintained. Fixed by 52.

As shown in FIGS. 1 and 2, at the rear of the vehicle body 12 of the tractor 11 and at a position surrounded by a pair of brackets 31, 31 to which the rear guard 32 is attached, the other generator is provided. Additional alternator 61 is installed.

The additional alternator 61 is an existing hermetic AC generator capable of coping with work sites where dust and salt damage occur, and uses the same alternator 41 as the standard alternator 41.

As shown in FIGS. 3 and 4, an additional alternator 61 is provided with a power take-off shaft (hereinafter, referred to as an engine power take-off shaft) protruding from the rear end of the vehicle body 12.
This power take-off shaft is called "P @ Shaft 62".
).

Between the PT shaft 62 and the additional alternator 61, a belt transmission mechanism 63 for transmitting a rotational force from the PT shaft 62 to the additional alternator 61 is provided.

As shown in FIG. 3, in the belt transmission mechanism 63, a pulley 67 is integrated with a pulley shaft 66 which is connected to a P shaft 62 of the engine and a coupling 65 inside a bearing case 64 and rotates integrally. Is fitted to this pulley
An endless belt 71 is wound around a pulley 69 fitted on a drive shaft 68 of an additional alternator 61, and a PT
(4) The pulley 69 of the drive shaft 68 of the additional alternator 61 is rotated by the power transmitted from the shaft 62 to the belt 71 via the pulley 67, so that the additional alternator 61 generates AC power. The pulleys 67 and 69 use V pulleys, and the belt 71 uses a V belt.

A belt tension adjusting mechanism 72 for moving and adjusting the additional alternator 61 in a direction for variably adjusting the belt tension of the belt transmission mechanism 63 is provided.

As shown in FIG. 4, in the belt tension adjusting mechanism 72, an alternator mounting plate 73 is fixed to the inner surface of one bracket 31 with bolts, and protrudes from the lower portion of the alternator mounting plate 73. A mounting plate 76 protruding from the lower portion of the additional alternator 61 is rotatably connected to the bearing portion 74 by a rotation support shaft 75, and is rotated by a bearing portion 77 protruding from the upper portion of the alternator mounting plate 73. A base end of a belt tension adjusting link 79 is rotatably connected to the base shaft 78 by a moving support shaft 78.
A thread portion 81 is formed on the distal end side of the belt tension adjusting link 79.

Further, a mounting plate 82 is projected above the additional alternator 61, and a connecting member 84 is
Are rotatably mounted, and the threaded portion 81 of the belt tension adjusting link 79 is inserted into the coupling body 84, and nuts 85 arranged on both sides of the coupling body 84 are screwed into the threaded portion 81, and these nuts 85 The joint body 84 is moved by the rotation of
By tightening the connector 84 at 85, the position of the connector 84 is fixed.

As shown in FIGS. 2 and 3, the additional alternator 61, the belt transmission mechanism 63, and the belt tension adjusting mechanism 72 are covered by a protective cover 86 attached between the pair of brackets 31, 31, so that protection is provided. Have been.

The protective cover 86 is provided with a pair of brackets 3
The intermediate mounting plate 89 is mounted from the upper mounting plate 87 fixed between the first and the 31st to the lower mounting plate 88 on the lower rib member 39, and the intermediate portion is fixed to the inner surface of the pair of brackets 31 and 31.
It is bolted to.

FIG. 7 shows an electric circuit diagram of the alternator, and shows a sealed standard alternator 41 in the engine room 27.
And a rear sealed additional alternator 61 are connected by a wiring 91 so that they can be operated in parallel.
Is connected to a coil 94 of a relay 93, and a contact 95 for switching from an off position to an on position by energizing the coil 94 has an alternator lamp installed on the driver's seat side.
96 are connected. By turning on the lamp 96, the operator can confirm the operation of the additional alternator 61.

In such a configuration, the belt tension of the belt transmission mechanism 63 is reliably and variably adjusted by moving and adjusting the additional alternator 61 by the belt tension adjusting mechanism 72, so that the rotational force of the PТО shaft 62 is reduced by the additional alternator. Appropriately communicated to 61.

Then, a sealed standard alternator 41 in the engine room 27 is driven by a shaft member 53 connected to the crankshaft of the engine, and a sealed additional alternator 61 mounted on the rear part of the vehicle body 12 is driven by a PT shaft 62. , And the standard alternator 41 and the additional alternator 61 are operated in parallel.

The alternating current output from the standard alternator 41 and the additional alternator 61 is converted into direct current by a rectifier (not shown) such as a diode, and charges a battery mounted on the vehicle.

Thus, the sealed standard alternator 41
At the same time, an additional alternator 61
The cab 28 of the air conditioner specification can be installed on the vehicle body 12 or the cab light for dark place work because the battery can be charged efficiently according to the power generation capacity by adding it to the rear end to increase the power generation capacity. It is possible to add 29 or attach the above-mentioned electrical components and other attachments requiring electric power.

Further, the additional alternator 61 is additionally mounted by effectively utilizing an empty space between the pair of brackets 31, 31 at the rear of the vehicle body 12, so that the existing vehicle structure such as the engine room 27 is not damaged. A high-power vehicle power generator can be installed substantially, and a large-sized high-power sealed alternator that is not easily developed is unnecessary.

[0040]

According to the first aspect of the present invention, one of the generators in the engine room is not changed and the other generator is additionally mounted at the rear of the vehicle body and driven by the engine power take-off shaft. In addition, a substantially high-power vehicle power generator can be installed without damaging the existing vehicle structure such as an engine room, and a large-sized high-power generator that is not easily developed can be eliminated.

According to the second aspect of the present invention, since one of the generators and the other of the generators are sealed alternators, it is possible to cope with work sites where dust and salt damage occur.

According to the third aspect of the invention, the other generator is moved and adjusted by the belt tension adjusting mechanism, whereby the belt tension of the belt transmission mechanism can be reliably and variably adjusted, and the rotational force of the engine power take-off shaft can be reduced. It can be properly transmitted to the other generator.

According to the fourth aspect of the present invention, the other generator can be additionally mounted by effectively utilizing the empty space between the pair of brackets at the rear portion of the vehicle body, and the cab is mounted on the vehicle body. Addition of cab light for dark place work,
It is possible to adopt an air conditioner specification cab.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a vehicle equipped with a vehicle power generation device according to the present invention.

FIG. 2 is a rear view of the vehicle.

FIG. 3 is a cross-sectional view showing a portion where an additional alternator of the vehicle power generator is installed.

FIG. 4 is a rear view showing a portion where an additional alternator of the vehicle power generating device is installed.

FIG. 5 is a front view showing an installation portion of a standard alternator of the vehicle power generating device.

FIG. 6 is a side view showing an installation part of a standard alternator of the vehicle power generation device.

FIG. 7 is an electric circuit diagram showing an alternator connection circuit of the vehicle power generator.

[Explanation of symbols]

11 Tractor for construction machinery as a vehicle 12 Body 27 Engine room 28 Cab 31 Bracket 41 Standard alternator as one generator 61 Additional alternator as the other generator 62 Power take-off shaft (PТО shaft) as engine power take-off shaft 63 Belt transmission mechanism 72 Belt tension adjustment mechanism

Claims (4)

[Claims] 1. A generator installed in an engine room of a vehicle and the one generator driven by an engine power take-out shaft installed at a rear part of the vehicle body and protruding from a rear end of the vehicle body. And a generator for the other vehicle. 2. The vehicle generator according to claim 1, wherein the one generator and the other generator are each a sealed alternator. 3. A belt transmission mechanism for transmitting torque from the engine power take-off shaft to the other generator, and a belt tension adjustment mechanism for moving and adjusting the other generator in a direction for variably adjusting the belt tension of the belt transmission mechanism. The power generator for a vehicle according to claim 1, wherein the power generator is provided. 4. A vehicle is a tractor for a construction machine to which a cab can be mounted, the tractor for a construction machine includes a pair of brackets at a rear portion of a vehicle body, and the other generator is disposed between the pair of brackets. The vehicular power generator according to any one of claims 1 to 3, wherein