KR20170130146A - Multi-purpose Utility vehicle for construction and snow removing work - Google Patents

Abstract

Disclosed is a multi-purpose carrier vehicle for a construction and snow-removing work, which has a pair of left and right steerable front wheels and a pair of right and left rear wheels. According to the present invention, an engine is mounted on a mounting space between the front wheels and the rear wheels, and a transmission combination consisting of a continuously variable transmission (HST) that carries out primary continuously-variable shifting while rotating by a power output from an engine output shaft and a transmission that carries out secondary negative shifting with respect to a power which is primarily continuously-variable shifted is mounted at a rear end of the engine. The transmission comprises: a rear differential unit that distributes a transmission power to the left and right rear wheels according to a driving situation; a front wheel driving shaft that outputs a part of the transmission power of the transmission for driving the front wheels; and a PTO driving shaft that outputs another part of the transmission power for pulling a front side of a vehicle body. A PTO propeller shaft is provided between the front wheels and the rear wheels for pulling the front side of the vehicle body of the power output from the PTO driving shaft, and a PTO shaft protruding partially forward of the vehicle body is connected to a front end of the PTO propeller shaft opposite the PTO drive shaft.

Description

[0001] Multi-purpose vehicle for construction and snow removal [0002]

The present invention relates to a multipurpose transportation vehicle for construction and snow removal, and more particularly, to a multipurpose transportation vehicle for construction and snow removal work to which a power take off (PTO) for drawing engine power to the outside is applied.

Utility vehicle (UTV) is widely used in a wide range of fields such as distribution, construction, leisure, and industrial use. Especially, it is advantageous for structural runway, and it is mainly used as a transportation means for carrying and transporting soil or crops at a construction site or an agricultural site, or carrying and carrying tools necessary for various operations.

In order to quickly load and unload a load mounted on the loading car, the loading car is tilted backward within a limited angular range with respect to the hinge portion at the rear of the car body such as a dump vehicle, The loading box is constructed with a dumping structure capable of returning to the loading position.

In recent years, in order to improve the usability of the conventional multipurpose transportation vehicle limited to the movement and transportation, various types of working machines such as a snow removing apparatus can be attached to the front or rear of the vehicle, and a part of the power output by the engine and shifted by the transmission (Power Take Off) so as to drive the above-mentioned working machine by pulling the power take-off device to the outside.

However, in the case of a conventional multipurpose transportation vehicle used for construction and snow removal work, the vehicle body and the vehicle structure are considerably complicated, so that the engine is output within the limited design range, and the forward power for pulling the power shifted by the transmission There is a problem that it is very difficult to apply a power take off (PTO).

Korean Patent Publication No. 2012-0009216 (published on Feb. 02, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multipurpose transportation vehicle for a construction and snow removal work, to which a forward PTO function capable of outputting power from an engine and shifted by a speed shift device to a vehicle forward side is added.

According to the present invention as means for solving the problem,

1. A multi-purpose vehicle for construction and snow removal, comprising a pair of left and right steerable front wheels and a pair of right and left rear wheels,

A continuously variable transmission (HST) which carries an engine mounted on a space between the front wheel and the rear wheel divided by a stack frame and a base frame constituting the vehicle body, A transmission combination constituted by a transmission for performing a secondary upshift to a continuously-variable shifted power is mounted at a rear end of the engine,

The transmission includes a rear differential unit that receives transmission power from the transmission and distributes the rear differential power to the left and right rear wheels according to the driving situation, a front wheel drive shaft that outputs some of the transmission power of the transmission for the front wheel drive, And a PTO drive shaft for outputting the vehicle body forwardly for pulling out the vehicle body,

A PTO propeller shaft is provided between the front wheel and the rear wheel for pulling forward power of the power output from the PTO drive shaft, and a PTO shaft partially protruding forward of the vehicle body is connected to the front end of the PTO propeller shaft opposite to the PTO drive shaft. And provides a multi-purpose vehicle for work.

In an embodiment of the present invention, the engine may be disposed in the mounting space such that an engine flywheel outputting power is directed toward the rear of the vehicle body.

The continuously variable transmission is constituted by a variable displacement hydraulic pump driven by engine power and a variable displacement hydraulic motor driven by a hydraulic oil supplied by a hydraulic pump, a continuously variable transmission is mounted on the front end of the transmission, The engine can be mounted on the front end of the continuously variable transmission adjacent to the mounted surface.

Preferably, the front wheel drive shaft and the PTO drive shaft are extended so as to protrude outside the front end of the transmission in the transmission, and the front wheel drive shaft and the PTO drive shaft are parallel to each other.

A front wheel propeller shaft may be installed between the front wheel side ahead shift unit and the transmission so that the power output from the front wheel drive shaft can be transmitted as driving power to the left and right front pair of wheels.

Further, the vehicle body applied to the present invention may further include: the base frame; a front suspension frame disposed at the front end of the base frame for alleviating an impact in front of the vehicle body; a dashboard disposed at a rear end of the front suspension frame, And a loading frame disposed above the base frame rearward of the mid-sheathed frame so that the loading space is formed between the mid-sheathed frame and the base frame. .

The multi-purpose vehicle for construction and snow removal according to an embodiment of the present invention includes a front PTO function capable of driving a working machine attached to the front of the vehicle, such as a snow removal device, It is possible to further maximize the utility of the vehicle and meet the demands of the market demanding more various functions.

1 is a side view of a multi-purpose vehicle for construction and snow removal according to an embodiment of the present invention.
2 is a plan view of a multi-purpose vehicle for construction and snow removal according to an embodiment of the present invention.
3 is a perspective view of a vehicle body of a multi-purpose vehicle for construction and snow removal according to an embodiment of the present invention, which includes a combination of an engine and a transmission, and is equipped with a power transmitting element for transmitting a shift power to wheels and a working machine.
Fig. 4 is a side view of the vehicle shown in Fig. 3; Fig.
Fig. 5 is a view of the vehicle body shown in Fig. 3; Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It is to be understood that the terms "comprises", "having", and the like in the specification are intended to specify the presence of stated features, integers, steps, operations, elements, parts or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Also, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

In addition, the terms " part, "" unit," " module, "and the like, which are described in the specification, refer to a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software .

In the following description with reference to the accompanying drawings, the same reference numerals are given to the same constituent elements, and a duplicate description thereof will be omitted. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a side view of a multi-purpose vehicle for construction and snow removal according to an embodiment of the present invention, and FIG. 2 is a plan view of a multi-purpose vehicle for construction and snow removal according to an embodiment of the present invention. Referring to these drawings, the outline of a multipurpose transportation vehicle for construction and snow removal according to an embodiment of the present invention will be briefly described.

Referring to Figs. 1 and 2, a driver's seat 10 is provided between a pair of steerable front left and right front wheels 1 and a pair of right and left rear wheels 2. The driver's seat 10 is provided with a seat 12 for seating and a steering wheel (not shown) for steering the wheel is provided in the space of the driver's seat 10 in front of the seat 12, .

A roll over protective structure (ROPS) 20 surrounds the driver's seat 10 so that the driver can be safely protected from the rollover. A radiator room 30 surrounded by the bonnet is formed in front of the driver's seat 10. The radiator room 30 is provided with a radiator (not shown) for discharging part of the heat generated in the engine 40 through the cooling water.

A driving power is output by an engine 40 (see Fig. 3) disposed in a space for partitioning a vehicle body frame behind the seat 12, and a loading box 50 for cargo hostility is provided on the frame behind the driver's seat 10 . The loading box 50 is provided in a dump-able form that can be lowered at one time from the hinge portion of one side toward the rear of the vehicle body.

The power output from the engine 40 is shifted at an appropriate speed through a transmission combination (to be described later with reference to Figs. 3 to 5) which is directly connected to the rear end of the engine 40 to be transmitted to the rear wheel 2 or the front wheel 1 and the rear wheel 2 ) Are all transmitted to the driving force. And a portion thereof is used as a front worker driving power which is pulled out to the front of the vehicle through the PTO propeller shaft 102 and the PTO shaft 104 to be described later and selectively attached to the front of the vehicle.

The arrangement of the engine and the transmission combination and the structure of the power take-off power transmission system for pulling out the engine output to the vehicle for driving the traveling vehicle and the working machine to transmit the shifted power to the wheel by the driving power 3 to 5 will be referred to.

FIG. 3 is a perspective view of a vehicle body of a multipurpose vehicle for construction and snow removal according to an embodiment of the present invention, which includes a combination of an engine and a continuously variable transmission and includes a power transmission element for transmitting a shift power to wheels and a working machine. 3 are side and plan views of the vehicle body shown in Fig. 3, respectively. It is noted that some frames and components are omitted in FIGS. 3 and 4 for the sake of understanding of the invention.

3 to 5, the vehicle body 60 includes a pair of left and right base frames 62L and 62R arranged in the longitudinal and longitudinal directions. A tip suspension frame 63 is provided at the front end of the base frame 62 to mitigate the impact in front of the vehicle body 60 and a dashboard frame 64 for mounting the dashboard is provided at the rear of the front suspension frame 63 .

At the center of the base frame 62, a mid-shear frame 65 constituting a seating portion is provided. The mid-sheath frame 65 is composed of a horizontal sheet supporting frame 650 for supporting the sheet and a plurality of vertical connecting rods 652 for connecting the base frame 62 and the sheet supporting frame 650. And a loading frame 66 for supporting the loading box is connected to the rear end of the meanding frame 65 at the rear upper end of the base frame 62. [

A predetermined mounting space S between the front wheel 1 and the rear wheel 2 defined by the loading frame 66 and the base frame 62 as the loading frame 66 is disposed above the base frame 62 The engine 40 is disposed. Further, a transmission combination 45 for shifting the power output by the output shaft of the engine 40 to a speed suitable for operation or traveling is coupled to the rear end of the engine 40.

A loading box 50 having a loading surface on which a product can be loaded is mounted on the loading frame 66 at the rear of the vehicle body and is divided by the loading frame 66 under the loading box 50 and the vehicle body base frame 62, The engine 40 can be firmly and stably mounted to the mounting space S via the mounting base 68 or a separate independent mounting member (not shown).

As described above, the transmission combination 45 shifts the power output from the engine 40 at a speed suitable for operation or traveling, and outputs the power for driving the work machine in front of the vehicle and / or the vehicle . To this end, an input shaft (not shown) of the transmission combination 45 is directly connected to the flywheel 42 for outputting the power generated by the engine 40 so as to transmit power.

The engine 40 can be disposed in the loading space S in the longitudinal direction of the vehicle body so that the flywheel 42 faces the rear of the vehicle body and the transmission combination 45 is configured such that the optimal shift And may be a combination of different types of transmissions having different structures and different transmission principles for optimizing the shifting power output from the engine 40. [

The transmission combination 45 can be safely and firmly mounted on the rear end suspension frame 67 at the rear end of the base frames 62L and 62R. The rear end suspension frame 67 includes a plurality of suspension supports 672 connecting the rear frames 670 and the rear frames 670 coupled to the rear ends of the base frames 62L and 62R and the loading frames 66, .

Specifically, the transmission combination 45 includes a continuously variable transmission 45a that primarily determines the rotational speed and direction of the power through a stepless shift while being rotated by the power output from the engine 40, And a transmission 45b for selecting a pair of gears having a gear ratio of a desired speed to implement a secondary shift.

The continuously variable transmission 45a corresponding to the primary transmission includes a variable displacement hydraulic pump driven by engine power and a variable displacement hydraulic motor driven by hydraulic oil supplied by the hydraulic pump to output the primary transmission power (HST, Hydrostatic Transmission), and the transmission 45b, which is a secondary transmission, may be constituted by a plurality of shift elements (a plurality of pairs of gears, shifters, shift shafts, etc.).

A rear differential gear unit 92 is installed in the transmission 45b opposite to the continuously variable transmission 45a. The rear differential unit 92 distributes the final shifted power by the transmission 45b to a pair of right and left rear wheels 2 (Fig. 1) via a rear wheel axle (not shown) according to the running situation . More specifically, the power is appropriately distributed in accordance with the load magnitudes applied to the left and right rear wheels 2.

Although not shown, the rear differential unit 92 includes a differential case having a ring gear, a pair of differential pinions rotatably mounted on the differential gear shaft in the differential case, a differential pinion gear- And a pair of left and right side gears provided at the left and right differential coaxial end portions, and the like. Since this is a well-known structure, a detailed description will be omitted.

The transmission 45b is further provided with a front wheel drive shaft 452 for outputting some of the final transmission power for front wheel drive and a PTO drive shaft 450 for pulling out another part of the transmission power to the front of the vehicle body. The front wheel drive shaft 452 and the PTO drive shaft 450 may be directly connected to the final transmission shaft in the transmission 45b in a powertransmissible manner or through a power transmission element such as a gear.

The front wheel drive shaft 452 and the PTO drive shaft 450 are extended to protrude outside the front end of the transmission 45b inside the transmission 45b and are arranged to be parallel to each other, (PTO propeller shafts 102, 72, and 102, which will be described later) that transmit the power output from the first and second shafts 451 and 452 to the other can be prevented from being interchanged or interfered with each other.

The front wheel drive shaft 452 is connected to the front wheel propeller shaft 72 constituting the drive system for power transmission. The front end of the front wheel propeller shaft 72 opposite to the front wheel drive shaft 452 is connected to the front drive unit 82 which is arranged in the vehicle width direction at the center of the front end suspension frame 63 described above. The transmission power output by the front wheel drive shaft 452 can be transmitted to the front wheel 1 as driving power through the front wheel propeller shaft 72 and the front drive unit 82. [

Specifically, the front wheel propeller shaft 72 includes an axle coupling element constituted by a pair of yokes and a cross shaft connecting the yokes, and an input shaft splined to the front wheel drive shaft 452 so as to absorb a change in length according to driving conditions And a shaft-like element such as a steel pipe-type propelling shaft connected to the input shaft through the coupling element.

The power output from the PTO drive shaft 450 is used as a power for driving the front working machine which is pulled out toward the front of the vehicle body through the PTO transmission system 100 and attached to the front of the vehicle body. At this time, the PTO transmission system 100 includes a PTO shaft 104 and a PTO propeller shaft 102 for transmitting power between the PTO shaft 104 and the PTO shaft 104 for finally outputting PTO power to the front working machine Lt; / RTI >

The PTO propeller shaft 102 is disposed between the front wheel and the rear wheel and more specifically between the front differential unit 82 and the transmission 45b in the longitudinal direction of the vehicle body to transmit power output from the PTO drive shaft 450 to the PTO shaft And the PTO shaft 104 is installed such that a part of the front end (the output end 104a connected to the power shaft on the power side for power transmission) protrudes forward of the vehicle body.

The PTO shaft 104 can be rotatably supported by a supporting member 120 (see FIG. 3) having a bearing and fixed to the leading end suspension frame 63 by a predetermined connecting member (not shown), and the PTO propeller shaft 102 may include a shaft element composed of a shaft coupling element, an input shaft and a propeller shaft, as in the case of the front wheel propeller shaft 72.

5, the aforementioned continuously variable transmission is mounted on the front end side of the transmission 45b, and is connected to the front end of the continuously variable transmission 45a adjacent to the side on which the transmission 45b is mounted, The engine 40 is deflected to one side with respect to the vehicle widthwise center line C so that the front wheel propeller shaft 72 and the PTO propeller shaft 102 can be freed up on the opposite side as they are deflected .

The multi-purpose vehicle for construction and snow removal according to the present invention includes a front PTO function capable of driving a working machine attached to the front of the vehicle, for example, a snow removal device, It is possible to further maximize the utility of the vehicle as compared with the prior art, and to meet the demands of the market demanding more various functions.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

1: front wheel 2: rear wheel
10: driver's seat 12: seat
20: Overturn prevention structure 30: Radiator room
40: engine assembly 42: flywheel
50: Carrier 60: Car body
62: base frame 63: end suspension frame
64: Dashboard frame 65: Midseaf frame
66: stacking frame 67: rear end suspension frame
68: Mounting base 72: Front propeller shaft
82: front differential unit 92: rear differential unit
100: PTO electric system 102: PTO propeller shaft
104: PTO shaft 450: PTO drive shaft
452: front wheel drive shaft S: engine mounting space

Claims (6)

1. A multi-purpose vehicle for construction and snow removal, comprising a pair of left and right steerable front wheels and a pair of right and left rear wheels,
A continuously variable transmission (HST) in which an engine is mounted in a mounting space between the front wheel and the rear wheel, the front wheel and the rear wheel being divided by a loading frame and a base frame constituting the vehicle body, A transmission combination constituted by a transmission for performing a secondary upshift to the first continuously variable transmission is mounted at the rear end of the engine,
The transmission includes a rear differential unit that receives transmission power from the transmission and distributes the rear differential power to the left and right rear wheels according to the driving situation, a front wheel drive shaft that outputs some of the transmission power of the transmission for the front wheel drive, And a PTO drive shaft for outputting the vehicle body forward drawing of the vehicle,
A PTO propeller shaft is disposed between the front wheel and the rear wheel for pulling forward power of the power output from the PTO drive shaft, and a PTO shaft partially protruding forward of the vehicle body is connected to the front end of the PTO propeller shaft opposite the PTO drive shaft. Multipurpose vehicle for work.
The method according to claim 1,
Wherein the engine is disposed in the mounting space such that an engine flywheel for outputting power is directed toward the rear of the vehicle body.
The method according to claim 1,
The continuously variable transmission is constituted by a variable displacement hydraulic pump driven by engine power and a variable displacement hydraulic motor driven by hydraulic oil supplied by a hydraulic pump,
Wherein the engine is mounted on a front end portion of the continuously variable transmission adjacent to a surface on which the transmission is mounted, and the continuously variable transmission is mounted on the front end portion of the transmission.
The method according to claim 1,
Wherein the front wheel drive shaft and the PTO drive shaft are extended so as to protrude outside the front end of the transmission in the transmission, wherein the front wheel drive shaft and the PTO drive shaft are parallel to each other.
The method according to claim 1,
And a front wheel propeller shaft is installed between the front drive unit and the transmission such that the power output from the front wheel drive shaft can be transmitted as driving power to the pair of left and right front wheels.
The method according to claim 1,
The vehicle body,
A base frame;
A front suspension frame disposed at a front end of the base frame for alleviating a shock in front of the vehicle body;
A dashboard frame disposed at a rear end of the leading end frame and mounted with a dashboard;
A mid-sheath frame installed at a center of the base frame and constituting a seating portion;
And a loading frame disposed above the base frame behind the mid-sheath frame to form the mounting space between the base frame and the base frame.

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