KR20030070430A - Power Take Off Device For Road Sweeping Vehicle - Google Patents

Abstract

PURPOSE: A power extractor for a road surface sweeper is provided to reduce air pollution, noise, and economical loss and improve the space application of the interior of a vehicle by removing an auxiliary engine driving cleaning equipment. CONSTITUTION: In a road surface sweeper having a power transmitting device transmitting the power of an engine(20) through a crankshaft(21), a flywheel(22), a clutch, and a transmission(30) to a driving wheel for traveling and loading cleaning equipment(40), a power extractor for the road surface sweeper is composed of a first pulley(11) combined to the end of the crankshaft to rotate to transfer the power of the engine to the driving wheel and a second pulley(12) connected by a belt(13) to interlock with the first pulley and the second pulley transmitting the power of the engine to the cleaning equipment.

Description

Power Take Off Device For Road Sweeping Vehicle

The present invention relates to a road sweeping vehicle, and in particular, a power for a road sweeper for providing driving power for a sweeping apparatus in a sweeping vehicle equipped with a sweeping equipment for the purpose of cleaning the garbage discarded in a road, a parking lot, an industrial complex, an airfield runway and a playground. It relates to a drawing device.

In recent years, the interest in beautification of the surrounding environment has been increasing day by day due to the improvement of the public awareness, and in particular, the treatment of waste is important in relation to the urban aesthetics.

On the other hand, street litter, such as fallen leaves, garbage, and sand, scattered around the roads not only harms the aesthetics of the city, but also flows into sewage pipes and causes water pollution, so it is necessary to remove them from time to time.

Currently, local governments, etc. handle roadbed garbage using cleaning vehicles equipped with cleaning equipment. In general, road cleaning vehicles are separate from main engines for driving driving wheels, and auxiliary engines for driving cleaning equipment, for example, blowers. Equipped with.

That is, as illustrated in FIGS. 4 and 5, the main engine 100 provides power to the drive wheel 140 through the propulsion shaft 130 via the clutch 110 and the transmission 120, and assists the power. The engine 200 supplies power to the blowers 240 and the V-belt 270 to the blower 240 for sucking the rubbish on the road surface, which is brushed by the brush 210, through the suction port 220 to the loading box 230. Done.

However, the conventional road sweeper equipped with such a power transmission system not only increases air pollution and noise due to smoke by operating the auxiliary engine during operation, but also increases the fuel consumption due to the maintenance cost for the auxiliary engine and the vehicle load. As a result of causing economic losses, there is a problem of reducing the space utilization efficiency inside the vehicle.

The present invention has been made to solve the above problems, the object of which is to eliminate the conventional auxiliary engine for driving the cleaning equipment, to reduce air pollution, work noise and economic loss, and An object of the present invention is to provide a power take-off device for a road sweeper that increases space utilization efficiency.

1 is a perspective view showing a power take-off apparatus according to the present invention,

Figure 2 is a block diagram showing a coupling relationship between the power take-off device and the engine and cleaning equipment according to the present invention,

3 is a view showing a power transmission system of a road sweeper equipped with a power take-off device according to the present invention;

Figure 4 is a view showing a road sweeping vehicle equipped with a conventional power transmission system,

5 is a view showing a power transmission system of a conventional road sweeper.

<Explanation of symbols for the main parts of the drawings>

11: first pulley 11a, 12a: shaft hole 11b: fastening hole

12 second pulley 12b driven shaft 13 belt

14 pulley housing 14a flange 14b locking pin hole

20: engine 21: crankshaft 22: flywheel

30: transmission 31: clutch cover 40: cleaning equipment

50: hydraulic system 51: hydraulic pump 52: hydraulic tank

53: motor 54: flow path 55: control valve

56: relief valve

The power take-off for a road sweeper according to the present invention for achieving the above object is provided with a power transmission device for transmitting the power of the engine to the drive wheel through the crankshaft and flywheel and the clutch and the transmission, the cleaning vehicle equipped with cleaning equipment A first pulley coupled to a distal end of the crankshaft to rotate to transmit power of the engine to the driving wheel side; It is characterized in that it comprises a second pulley which is connected to the belt so as to interlock with the first pulley for transmitting the power of the engine to the cleaning equipment side.

Here, a hydraulic system for controlling the power of the engine received from the first pulley may be interposed between the second pulley and the cleaning equipment.

In addition, the first pulley and the second pulley may be embedded in a pulley housing interposed between the distal end of the crankshaft and the flywheel.

Preferably, the belt is a timing belt, and the first and second pulleys may be timing belt pulleys, respectively.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

The power take-off device of the present invention is interposed between the crankshaft and the flywheel of the engine that provides the rotational power to the driving wheels of the cleaning vehicle, thereby drawing the rotational power of the engine transmitted from the engine to the driving wheel through the clutch and the transmission to the cleaning equipment side. Characterized in that it can be used, the configuration through the following examples will be able to clearly understand.

1 is a perspective view showing a power take-off device according to the present invention, Figure 2 is a block diagram showing a coupling relationship of the power take-off device, the engine and the cleaning equipment.

As shown, the power take-off device of the present invention has a pair of pulleys, that is, the first pulley 11 and the second pulley 12 are connected to each other by a belt 13, and the pulley housing 14 It has a structure in which the first and second pulleys 11 and 12 are installed.

In particular, in the figure, the belt 13 is made of a timing belt suitable for high-speed rotation, and the first and second pulleys 11 and 12 are shown as an embodiment consisting of timing belt pulleys accordingly.

The first pulley 11 is arranged to be positioned between the crankshaft 21 and the flywheel 22 of the engine 20 in the pulley housing 14, and the second pulley 12 is arranged in the pulley housing 14. It is installed with the bearing in the protruding flange portion 14a.

In addition, shaft holes 11a and 12a are formed at the central portions of the first pulley 11 and the second pulley 12 in the axial direction, respectively. The flywheel 22 and the flywheel 22 are formed through the shaft holes 11a of the first pulley 11. The driven shaft 12b is coupled to the shaft hole 12a of the second pulley 12 so as to be connected to a cleaning system 40, for example, a control system for driving a blower (to be described later).

In addition, the outer periphery of the shaft hole (11a) of the first pulley 11 is formed with a plurality of fastening holes (11b) for fastening to the distal end of the crankshaft 21, the pulley housing in the same direction as these fastening holes (11b) Locking pin holes 14b for engaging the engine 20 side and the transmission 30 side, more specifically, the clutch cover 31 side, are formed on the front and rear surfaces of the 14.

Meanwhile, a control system for controlling the operation of the cleaning equipment 40 is connected to the driven shaft 12b coupled to the shaft hole 12a of the second pulley 12. In this embodiment, the hydraulic system 50 is a suitable example. I adopt).

That is, the hydraulic pump 51 is coupled to the driven shaft 12b via a member such as a bracket and a bearing, and the hydraulic pump 51 is the hydraulic tank 52 and the motor 53 on the cleaning equipment 40 side. Are each connected to. In the flow path 54 between the hydraulic pump 51, the hydraulic tank 52, and the motor 53, a control valve 55 and a relief valve 56 are interposed, and such a hydraulic system can be implemented by conventional techniques. Detailed description thereof will be omitted.

The cleaning equipment 40 mentioned in the embodiment of the present invention mainly refers to a blower for suctioning garbage / dirt, etc. of the road surface, but also includes other cleaning equipment such as a brush for sweeping the road surface from the power take-off device. The power drawn may not only drive one cleaning device, but may also drive two or more cleaning devices by further including a third pulley and a driven shaft.

The following describes the operational relationship of the present invention based on the above embodiment.

First, as described with reference to FIG. 2, the power take-off device of the present invention is installed between the engine 20 block and the transmission 30, in particular the clutch cover 31, wherein the crankshaft on the engine 20 side is provided. (21) One end of the first pulley 11 is coupled to the distal end, the other end of the first pulley 11 is coupled to the flywheel 31, the flywheel 31 is connected to the clutch cover 31.

The cleaning device is equipped with a driven shaft 12b coupled to the hydraulic pump 51 in the shaft hole of the second pulley 12 connected by the first pulley 11 and the belt 13 to be interlocked with the first pulley 11. It is associated with a hydraulic system 50 that controls 40.

Therefore, when the engine 20 is started, its rotational power is transmitted to the crankshaft 21 so that the first pulley 11 coupled to the crankshaft 21 rotates at the same speed as the engine 20. At the same time, the second pulley 12 also rotates at the same rotational speed.

That is, the rotational power received by the first pulley 11 is transmitted to the transmission 30 and also to the second pulley 12, wherein the hydraulic pressure of the hydraulic system 50 linked to the second pulley 12 is applied. The pump 51 is also driven, but the operating hydraulic pressure is in the idling state only when it is started.

Subsequently, when the cleaning equipment 40 is to be cleaned and operated, the control valve 55 of the hydraulic system 50 is controlled to operate the hydraulic pressure to drive the motor 53 of the cleaning equipment 40 to perform the work. You can do it.

In particular, by adjusting the opening amount of the control valve 55 it is possible to control the operating rate of the cleaning equipment 40 by adjusting the operating flow rate and the hydraulic pressure accordingly.

On the other hand, ordinary road sweepers are driven by a blower or brush while driving, and the cleaning speed is very slow compared to the speed of a general driving purpose, so that only one main engine for driving does not run out of power. It is possible to carry out both running and cleaning.

The power transmission system of the road sweeper according to the power take-off device of the present invention as described above is summarized in FIG. 3, but the power of the main engine for driving is driven by the power take-off device of the present invention through the driving clutch and the transmission. Meanwhile, the cleaning equipment is driven through the hydraulic pump, the control valve and the motor of the hydraulic system.

As described above, the power take-off device for a road cleaning vehicle according to the present invention has the effect of reducing air pollution and work noise by eliminating the conventional auxiliary engine for driving the cleaning equipment.

In addition, since there is no need for an auxiliary device due to the conventional auxiliary engine, there is an economic benefit as well as an effect of increasing the space utilization efficiency inside the vehicle.

In addition, since the device for cleaning is simplified, there is an effect that the driver can perform the operation easily and simply.

Claims (4)

In a cleaning vehicle equipped with a cleaning device having a power transmission device for transmitting the power of the engine to the drive wheel for driving through the crankshaft, flywheel, clutch and transmission, A first pulley coupled to a distal end of the crankshaft to rotate to transmit power of the engine to the driving wheel side; And a second pulley connected to the belt so as to interlock with the first pulley to transmit power of the engine to the cleaning equipment. The method of claim 1, And a hydraulic system for controlling the power of the engine received from the first pulley between the second pulley and the cleaning equipment. The method of claim 1, And the first pulley and the second pulley are embedded in a pulley housing interposed between the distal end of the crankshaft and the flywheel. The method of claim 1, And the belt is a timing belt, and the first and second pulleys are timing belt pulleys, respectively.