JP3694455B2 - Vehicle power generation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular power generation apparatus including a plurality of generators.
[0002]
[Prior art]
An alternator (alternator) installed in a construction machine or the like is disposed integrally with the engine in the engine room, and has a fan belt for taking out power from the engine crankshaft and rotating the engine cooling fan. Using it, the alternator is rotated with the fan to generate electricity.
[0003]
Construction machine alternators are usually installed with open-type alternators for heat dissipation (cooling), but they are sealed (shielded) at work sites where large amounts of dust or salt damage occur. Type) alternator must be installed.
[0004]
This hermetic alternator cannot be improved in heat dissipation efficiency and is used only in construction machines that require a relatively low current of about 35 amperes.
[0005]
[Problems to be solved by the invention]
Therefore, when an extension light for working in a dark place or an air conditioner is attached to a cab of a construction machine using a sealed alternator, there is a problem that current is insufficient at about 35 amperes and the battery tends to rise.
[0006]
On the other hand, it is difficult to develop a high output alternator that is larger than 35 amperes and can be used even at sites where a large amount of dust or salt damage occurs. There is a problem that can not be installed in the engine room.
[0007]
The present invention has been made in view of these points, and an object of the present invention is to install a substantially high-output vehicle power generation device without impairing the existing vehicle structure.
[0008]
[Means for Solving the Problems]
The invention described in claim 1 is provided at one of the generators installed in the engine room of a tractor for a construction machine capable of mounting a cab on which an electrical component is mounted, and at the rear part of the vehicle body of the tractor for a construction machine. A generator separate from the one generator disposed between a pair of brackets and disposed inside a rear guard provided between the brackets and rotatably connected to the one bracket ; A belt transmission mechanism for transmitting a rotational force from the engine power take-off shaft projecting between the pair of brackets from the rear to the other generator, and a belt tension of the belt transmission mechanism provided between one bracket and the other generator the a vehicle generator apparatus comprising a belt tension adjusting mechanism for moving and adjusting the other of the generator in the direction to variably adjusted, thus, without changing one of the generator in the engine room Since the other generator is additionally attached to the rear part of the vehicle body and driven by the engine power take-off shaft, it is possible to install a substantially high-output vehicle power generation device without damaging the existing vehicle structure such as the engine room, A large high-power generator is not required. Further, by moving and adjusting the other generator by the belt tension adjusting mechanism, the belt tension of the belt transmission mechanism can be variably adjusted and the rotational force of the engine power take-off shaft can be appropriately transmitted to the other generator. In addition, the other generator can be additionally installed by effectively using the space between the pair of brackets at the rear of the vehicle body, and an additional cab light for work in the dark due to the installation of the cab on the vehicle body, An air conditioner specification cab can be used.
[0009]
According to a second aspect of the present invention, in the vehicular power generation device according to the first aspect, the one generator and the other generator are sealed alternators, respectively. It can also handle the work site where it occurs.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0011]
1 and 2 show a tractor for a construction machine as a vehicle (hereinafter simply referred to as a tractor 11). The tractor 11 is provided with a traveling device 13 on the left and right sides of a vehicle body 12. FIG.
[0012]
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, and a crawler belt, that is, a track 17, is wound around these and driven to rotate by the sprocket 14.
[0013]
Further, the base end of the arm 23 is pivotally supported by pins 22 on the frame member 21 that pivotally supports the guide roller 16 and the like on both sides of the vehicle body 12, and a hydraulic cylinder ( A blade (not shown) that can be moved up and down by a not shown) is mounted. When the blades are configured to perform soiling action in forward and reverse directions, a two-way dozer is provided.
[0014]
The tractor 11 is provided with a driver's seat 24 on the vehicle body 12, an operation lever 25 and a pedal 26 which are operated by an operator seated on the driver's seat 24, and an engine room 27 is provided in front of the tractor 11. An engine (not shown) is housed in the engine room 27.
[0015]
A cab 28 can be mounted on the vehicle body 12 to protect the operator. The cab 28 is equipped with electrical components such as a cab light 29 for working in a dark place, an air conditioner for air conditioning in the cab, an indoor lamp, and an electric wiper for the front window and the rear window (both not shown). Yes.
[0016]
As shown in FIG. 1, the tractor 11 has a pair of brackets 31 and 31 attached to the rear portion of the vehicle body 12 as shown in FIG. The pair of brackets 31 and 31 are rear guard brackets to which a rear guard 32 formed into an oval shape by a steel pipe is welded, and as shown in FIG. Engagement holes 33 for engaging a vehicle hanging hook or wire are formed in the upper part.
[0017]
As shown in FIGS. 3 and 4, a pair of brackets 31, 31 for mounting the rear guard are integrally formed with mounting plate portions 34 at the upper and lower sides of the vehicle body 12, and bolts are attached to these mounting plate portions 34. Since the insertion hole 35 is formed, the pair of brackets 31 and 31 are fixed to the rear portion of the vehicle body 12 by fastening the mounting plate portion 34 to the mounting counterpart member 37 on the vehicle body 12 side with the bolt 36. . As shown in FIG. 3, the pair of brackets 31, 31 are connected by a reinforcing upper rib member 38 and a lower rib member 39.
[0018]
A standard alternator 41 as one generator as shown in FIGS. 5 and 6 is installed in the engine room 27 of the tractor 11. The standard alternator 41 is an existing hermetic AC generator that can be used at work sites where dust and salt damage occur.
[0019]
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. A rotating support shaft 45 inserted into the bearing unit 44 is used to lower the standard alternator 41. A pair of mounting plates 46 projecting from each other are pivotally supported, and a mounting plate 47 projecting from the upper portion of the standard alternator 41 is supported by a support arm 49 pivotally supported by a support member 48 in a fixed position. It is fixed by a bolt 52 inserted in the arc groove 51.
[0020]
The pulley 54 is connected to the crankshaft of the engine and is fitted to the shaft member 53 protruding from the lower portion of the front housing cover 42, the pulley 55 for driving the engine cooling fan, and the drive of the standard alternator 41. An endless belt 58 is wound around a pulley 57 fitted to the shaft 56, and the pulleys 55, 57 are rotated by the power transmitted from the pulley 54 of the shaft member 53 to the belt 58, and these pulleys 55, 57 The coaxial fan and the standard alternator 41 are rotated to generate AC power. The pulleys 54, 55, and 57 use V pulleys, and the belt 58 uses a V belt.
[0021]
The standard alternator 41 loosens the bolt 52 and adjusts the belt 58 in the clockwise direction with the rotation support shaft 45 as a fulcrum, thereby applying tension to the belt 58 and fixing it with the bolt 52 at a position where appropriate tension can be maintained. Has been.
[0022]
As shown in FIGS. 1 and 2, an additional alternator as the other generator is located at the rear of the vehicle body 12 of the tractor 11 and surrounded by a pair of brackets 31, 31 to which the rear guard 32 is attached. 61 is installed.
[0023]
The additional alternator 61 is an existing hermetic AC generator that can handle work sites where dust and salt damage occur, and uses the same one as the standard alternator 41.
[0024]
As shown in FIGS. 3 and 4, the additional alternator 61 is provided by a power take-off shaft (hereinafter referred to as “PТО shaft 62”) as an engine power take-off shaft protruding from the rear end of the vehicle body 12. Driven.
[0025]
Between the PTO shaft 62 and the additional alternator 61, a belt transmission mechanism 63 that transmits a rotational force from the PTO shaft 62 to the additional alternator 61 is provided.
[0026]
As shown in FIG. 3, in this belt transmission mechanism 63, a pulley 67 is integrally fitted to a pulley shaft 66 that is coupled with a PТO shaft 62 and a coupling 65 of an engine inside a bearing case 64 and rotates integrally. An endless belt 71 is wound around this pulley 67 and a pulley 69 fitted to the drive shaft 68 of the additional alternator 61, and is transmitted from the PTO shaft 62 to the belt 71 via the pulley 67. The pulley 69 of the drive shaft 68 of the additional alternator 61 is rotated by the power, and AC power generation by the additional alternator 61 is performed. The pulleys 67 and 69 use V pulleys, and the belt 71 uses a V belt.
[0027]
A belt tension adjusting mechanism 72 that moves and adjusts the additional alternator 61 in a direction to variably adjust the belt tension of the belt transmission mechanism 63 is provided.
[0028]
As shown in FIG. 4, in the belt tension adjusting mechanism 72, an alternator mounting plate 73 is fixed to the inner side surface of one bracket 31 with a bolt, and a bearing portion 74 is provided projecting from the lower portion of the alternator mounting plate 73. Further, a mounting plate 76 projecting from the lower portion of the additional alternator 61 is pivotally connected by a pivotal support shaft 75, and a rotation support shaft is connected to a bearing portion 77 protruding from the upper portion of the alternator mounting plate 73. 78, the base end of the belt tension adjusting link 79 is rotatably connected. A threaded portion 81 is formed on the front end side of the belt tension adjusting link 79.
[0029]
Further, a mounting plate 82 projects from the upper portion of the additional alternator 61, and a connecting body 84 is rotatably attached to the mounting plate 82 by a pin 83, and a threaded portion 81 of a belt tension adjusting link 79 is inserted into the connecting body 84. The nuts 85 arranged on both sides of the connecting body 84 are screwed into the threaded portion 81, the connecting body 84 is moved by the rotation of these nuts 85, and by tightening the connecting body 84 with these nuts 85, The position of the connecting body 84 is fixed.
[0030]
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 and protected by a protective cover 86 attached between the pair of brackets 31 and 31. .
[0031]
The protective cover 86 is attached from the upper mounting plate 87 fixed between the pair of brackets 31 and 31 to the lower mounting plate 88 on the lower rib member 39, and the intermediate portion is the inner surface of the pair of brackets 31 and 31. It is bolted to the intermediate mounting plate 89 fixed to.
[0032]
FIG. 7 shows an electrical circuit diagram of the alternator. A sealed standard alternator 41 in the engine room 27 and a rear sealed additional alternator 61 are connected to each other by a wiring 91 so that they can be operated in parallel. The wiring 92 is connected to a coil 94 of a relay 93, and an alternator lamp 96 installed on the driver's seat side is connected to a contact 95 that is switched from an off position to an on position by energizing the coil 94. . The operator can confirm the operation of the additional alternator 61 by turning on the lamp 96.
[0033]
In such a configuration, the belt tension of the belt transmission mechanism 63 is reliably 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 appropriate for the additional alternator 61. Is transmitted to.
[0034]
The sealed standard alternator 41 in the engine room 27 is driven by the shaft member 53 connected to the crankshaft of the engine, and the sealed additional alternator 61 mounted on the rear part of the vehicle body 12 is driven by the PTO shaft 62. These standard alternator 41 and additional alternator 61 are operated in parallel.
[0035]
The AC electricity output from the standard alternator 41 and the additional alternator 61 is converted to DC by a rectifier (not shown) such as a diode, and charges a battery mounted on the vehicle.
[0036]
In this manner, together with the sealed standard alternator 41, similarly, a sealed additional alternator 61 is additionally attached to the rear end of the vehicle body 12 to improve the power generation capacity and efficiently charge the battery corresponding to power generation consumption. In addition, it is possible to mount an air conditioner-specific cab 28 on the vehicle body 12, add a cab light 29 for work in the dark, or mount the electrical equipment and other attachments that require electric power.
[0037]
Further, since the additional alternator 61 is additionally mounted by effectively utilizing the empty space between the pair of brackets 31, 31 at the rear of the vehicle body 12, the existing vehicle structure such as the engine room 27 is not substantially damaged. There is no need for a large high-power sealed alternator that can be installed with a high-power vehicle generator and is not easily developed.
[0038]
【The invention's effect】
According to the first aspect of the present invention, since one generator in the engine room is not changed and the other generator is additionally attached to the rear part of the vehicle body and driven by the engine power take-off shaft, Without damaging the existing vehicle structure, it is possible to install a substantially high-output power generator for a vehicle and eliminate the need for a large high-power generator that is not easily developed. Further, by moving and adjusting the other generator by the belt tension adjusting mechanism, the belt tension of the belt transmission mechanism can be variably adjusted, and the rotational force of the engine power take-off shaft can be appropriately transmitted to the other generator. In addition, the other generator can be additionally installed by effectively using the space between the pair of brackets at the rear of the vehicle body, and an additional cab light for working in the dark due to the installation of the cab on the vehicle body, An air conditioner specification cab can be used.
[0039]
According to the second aspect of the present invention, since one generator and the other generator are sealed alternators, it is possible to cope with work sites where dust and salt damage occur.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a vehicle equipped with a vehicle power generator according to the present invention.
FIG. 2 is a rear view of the vehicle.
FIG. 3 is a cross-sectional view showing an installation portion of an additional alternator of the above vehicle power generator.
FIG. 4 is a rear view showing a portion where the additional alternator of the vehicle power generator is installed.
FIG. 5 is a front view showing an installation portion of a standard alternator of the vehicle power generator.
FIG. 6 is a side view showing an installation portion of a standard alternator of the above vehicle power generator.
FIG. 7 is an electric circuit diagram showing an alternator connection circuit of the vehicle power generator.
[Explanation of symbols]
11 Tractors for construction machinery as vehicles
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 an engine power take-off shaft
63 Belt transmission mechanism
72 Belt tension adjustment mechanism

Claims (2)

One generator installed in the engine room of a tractor for construction machinery that can be fitted with a cab equipped with electrical components ,
The one generator arranged between a pair of brackets provided at the rear part of the vehicle body of the tractor for construction machinery and inside a rear guard provided between these brackets and rotatably connected to one bracket The other generator separate from
A belt transmission mechanism for transmitting rotational force from the engine power take-off shaft protruding between the pair of brackets from the rear of the vehicle body to the other generator;
A vehicle power generation comprising a belt tension adjusting mechanism provided between one bracket and the other power generator for moving and adjusting the other power generator in a direction to variably adjust the belt tension of the belt transmission mechanism. apparatus. The power generator for a vehicle according to claim 1, wherein each of the one generator and the other generator is a hermetic alternator.

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