KR102353595B1 - A direction change device for a walking type work machine that works by transmitting power in a direct gear method - Google Patents

Abstract

The present invention relates to a direction switching apparatus of a walking type working machine working by delivering motive power in a direct gear scheme. In accordance with the present invention, the direction switching apparatus includes: an engine part driven by fuel supplied from a fuel tank; a mission part including a power delivery assembly such that a rotating force due to the driving of the engine part can be delivered to a wheel driving part and a walking type working machine; the wheel driving part installed to be replaceable in a lower part of the mission part so as to be moved by the rotating force delivered from the mission part; a steering part installed in the rear of the mission part such that the wheel driving part can be moved and rotated in a desired direction; and a direction switcher comprising a power delivery part installed in the rear of the mission part such that the rotating force of the mission part can be delivered to the walking type working machine, while interconnected with the steering part and the power delivery part to convert a vertical rotating angle of the steering part, and covert a lateral rotating angle of the steering part and the power delivery to smoothen the driving of the walking type working machine. The present invention is capable of preventing an accident by reducing the fatigue of workers.

Description

A direction change device for a walking type work machine that works by transmitting power in a direct gear method

The present invention relates to a direction changing device for a walking-type work machine, and more particularly, a water pump, a spray sterilizer, a lawn mower, a vine remover, etc. can be combined and used in one power transmission device, as well as a rotary, a vinyl coated work machine, A walking that can selectively use a double-edged resting machine, etc., and works by transmitting power in a direct gear method that can change the direction of the walk-behind work machine by rotating the steering part of the walk-behind work machine up and down, left and right through a single cable. It is related to the direction changing device of the type working machine.

In general, in the past, all the work necessary for farming was done manually, but as the industry developed, many agricultural works were mechanized.

As an example, in rice farming in the past, all work was done manually, such as plowing paddy fields with a plow using the power of cattle, planting seedlings in the paddy fields, chopping mature rice with a sickle, and threshing the cut rice. lost.

However, as the industry developed, tractors were used to plow paddy fields, and what used to be planted by humans was replaced with a 'transferr', and a 'combine' replaced what used to be cut, shaken, and threshed with a sickle. As mechanization was achieved, farming using machines became common.

A cultivator, a tractor, a rice transplanter, a pumping machine, and a spray sterilizer are used as agricultural machines used in agriculture, but these agricultural machines have no choice but to perform limited tasks only.

That is, the transplanting machine is used only for transplanting rice, and the tiller, the tractor, etc. are limitedly used only for moving cargo on a trailer or for rotary work.

In addition, these agricultural machines move forward, backward, and change direction as the operator boards and operates them, but the operator has difficulties in operating it.

In other words, the heavy and large size of the agricultural machine itself makes it tough for the operator to operate.

requires strength.

Accordingly, there is a need for a walking machine that can be easily operated by an operator without effort and can be used by combining various types of agricultural machines with one power transmission device.

Korean Patent Publication No. 10-2013-0069520 Korean Patent Publication No. 10-2013-0010824 Korean Patent Publication No. 10-2011-0008249 Republic of Korea Utility Registration No. 20-0489768

The present invention for solving the problems of the prior art has the following objects.

An object of the present invention is to provide a direction changing device for a walking type work machine that transmits power in a direct gear method driven by a large torque by transmitting power generated from an engine to a gear.

The present invention is a walking type work machine that works by transmitting power in a direct gear method that can be used by attaching a rotary to the wheel driving part, as well as combining the power transmission part with agricultural machinery such as a water pump, a spray sterilizer, and a lawn mower. To provide a direction change device.

An object of the present invention is to provide a direction changing device for a walking type work machine that works by transmitting power in a direct gear method that prevents overturning during walking by a front support installed in the front and a rear support installed in the rear.

The present invention is a direct gear method that can change the direction of a walking type work machine by locking/unlocking a direction changing device made by double splitting a steering unit and a power transmission unit with a single cable through a simple operation. An object of the present invention is to provide a direction changing device for a walking type working machine.

The present invention for achieving the above object, the engine unit driven by the fuel supplied from the fuel tank; a transmission unit provided with a power transmission assembly to transmit rotational force according to the driving of the engine unit to a wheel driving unit and a walking type work machine; a wheel driving unit that is replaceably installed in the lower portion of the transmission unit so as to be movable by the rotational force transmitted from the transmission unit; a steering unit installed at the rear of the transmission unit so that the wheel driving unit moves and rotates in a desired direction; It consists of a power transmission unit installed at the rear of the transmission unit so that the rotational force of the transmission unit is transmitted to the walking type work machine, and is installed in conjunction with the steering unit and the power transmission unit to convert the vertical rotation angle of the steering unit, and the steering unit and the power transmission unit It is characterized in that it includes a direction changing device that converts the left and right rotation angles to ensure smooth operation of the walking type work machine.

The engine unit is driven by the fuel supplied from the fuel tank, and an air purifier is installed on one side to supply purified air to the rear, and an exhaust gas outlet is installed on one side of the air purifier to discharge exhaust gas burned in the engine assembly. is installed, a gasket is installed on one side of the engine assembly, a flange is installed on one side of the engine assembly, the flange is fixed by a bolt, and the rotational force of the engine assembly is smoothly transmitted to the transmission unit A bearing is installed, a pressure release screw is installed on the flange to adjust the pressure of the engine assembly, an engine cover is installed on the upper part of the engine assembly, the engine cover is installed on the engine assembly, and if necessary It is detachably installed with bolts, flat washers and rubber washers to separate the engine cover. There is this.

The transmission unit, the engine unit is provided with a front support installed in front of the engine unit so as not to be conducted forward during movement and rotation, and a power transmission assembly is provided to transmit the rotational force according to the driving of the engine unit to the wheel driving unit and the walker, , The gearbox assembly is provided with a shaft coupled to the engine unit, a clutch core is coupled to one side of the shaft, and a gear shift assembly rotating together with the shaft is coupled to the shaft, and the clutch core is firmly coupled to the shaft Washers, bearings, washers and bolts are fastened as much as possible, and a position spring for adjusting the installation position of the shaft is installed on the shaft, a fixture is fixed so that the position spring does not come off the shaft, and both sides of the shaft are sealed. A seal is installed to maintain the shaft, a bearing is installed so that the shaft rotates smoothly, a double spur gear is engaged to transmit a rotational force to the wheel driving unit, and a bevel gear shaft is installed inside the double spur gear, The bevel gear shaft is coupled to the double spur gear by a flat key, a bearing is coupled to allow the bevel gear shaft to rotate smoothly, and a reverse shaft is coupled to the gearbox assembly to perform reverse movement, and one side of the reverse shaft is sealed. A seal is installed so as to be possible, a reverse gear push plate is coupled to the reverse shaft, a reverse gear is installed on the reverse shaft, a seat spring is installed so that the reverse gear is stably coupled, and a reverse gear movement limiter is installed on the reverse gear. is installed, a reverse gear spring is installed between the reverse gear and the reverse gear movement limiter, a coater and a nut are fastened to stably install the reverse gear spring, a bearing is coupled to the other side of the shaft, and the bearing of A first stopper washer is installed on one side, a gasket is installed on one side of the first stopper washer, and an oil sealing plate is installed on the gearbox assembly by a bolt on one side of the gasket, and the position of the shaft is provided on the gearbox assembly. A position pin to adjust is installed, and the position pin is attached to the gearbox assembly by a washer, a spring washer and a bolt. coupled, and a clutch line is installed in the gearbox assembly, and the clutch line is characterized in that the clutch line is fastened to the gearbox assembly by a nut.

The wheel driving unit is installed on the lower surface of the gearbox assembly, and the wheel driving unit is provided with a rotary that drains the ground as well as the tire is coupled to the wheel driving unit so that the power transmission device is moved, and the power transmission assembly is installed at the lower portion of the gearbox assembly, , A crank cabinet is installed in the power transmission assembly to install a wheel output shaft, a bevel gear is installed on a bottom surface of the gearbox assembly, a bearing is coupled to the bevel gear, and a shaft is provided between the gearbox assembly and the power transmission assembly. A gasket is installed, a crank cabinet is fixed to the power transmission assembly, an oil drain plug is installed on the bottom surface of the crank cabinet to drain oil, and the power transmission assembly is bolted to be firmly installed on the gearbox assembly. It is fastened, and a spring washer and a flat washer are installed together with the bolt, a shaft spacer, a washer and a bearing are installed on the wheel output shaft, and a working bevel gear engaged with the bevel gear shaft is installed on the wheel output shaft, and the crank cabinet A gasket is installed in close contact with the wheel output shaft, a bearing is installed on the wheel output shaft, a flange is installed on the outer surface of the crank cabinet, and a gearbox guard for stably coupling the wheel output shaft is installed on the flange, the gearbox guard An oil seal is provided on the inner surface, and the gearbox guard is characterized in that it is closely installed on the flange by a flange bolt, a spring washer, and a flat washer.

The steering unit includes a lower gear formed on an upper surface of the handle frame to rotate the handle frame in vertical and horizontal directions with respect to the transmission unit, a fixed shaft formed at a predetermined height such that a rotation bracket is coupled to the upper surface of the lower gear; and a rotational bracket having an upper gear on a bottom surface thereof to be coupled to the lower gear, and a direction changing assembly including side gears formed on both sides of the rotation bracket, respectively, so that the wheel driving unit moves and rotates in a desired direction. It is characterized in that it is installed at the rear of the transmission unit.

The power transmission unit may include a rotating lever formed to have a predetermined length on the steering unit, a bracket installed to correspond to the rotating lever, a switch installed on the bracket to emergency stop the engine unit, and a rotating frame rotatably installed on the bracket , is composed of a stop plate installed on the rotating frame to move the switch forward and backward, and an emergency stop lever for emergency stop driving of the engine unit is included, and is installed at the rear of the transmission unit so that the rotational force of the transmission unit is transmitted to the walking machine. It is characterized by being

and a power transmission gear installed in the transmission unit to transmit the rotational force of the engine unit to the wheel driving unit and the power transmission unit at the same rotational speed; a rear support installed at the rear of the transmission unit to prevent the power transmission device from being overturned to the rear; a central shaft installed on the central shaft adapter so as to be adjustable in height; It is characterized in that it includes; a rear assembly installed between the transmission unit and the central axis adapter.

The direction control unit in the present invention includes a left and right rotation angle fixing bracket provided on the arm of the power transmission unit, a left and right rotation angle adjustment bracket which is installed in conjunction with the steering bar of the steering unit so as to be rotatably coupled to the upper end of the left and right rotation angle fixing bracket, and It is characterized in that it consists of a vertical rotation angle fixing bracket that is fixedly installed on the steering bar.

The left and right rotation angle adjustment bracket is made to be rotatable with the left and right rotation angle fixing bracket by a hinge shaft, a first fixing tube in which a first cable is fixedly installed is provided on one side, and a second cable is fixedly installed on the other side. It is characterized by having a fixed tube.

A plurality of intermittent holes are provided in each of the left-right rotation angle fixing bracket and the vertical rotation angle fixing bracket, and the direction is changed by being locked/unlocked through the first cable and the second cable.

On the other hand, the angle changing cable has one end interlocked with the operation lever of the steering unit and the other end of the main cable connected to the distributor, the first cable interlocked with the main cable connected to the distributor, and the left and right ends of the first cable. A first fixing pin installed as a first fixing tube of the adjustment bracket to control the left and right rotation angle of the steering unit, a second cable interlocked with the main cable connected to the distributor, and an end of the second cable for adjusting the left and right rotation angle of the bracket It is characterized in that it is provided as a second fixing pin installed as a second fixing pipe to control the vertical rotation angle of the steering unit.

At this time, the first cable and the second cable are provided with fasteners for fixing the first and second fixing pins, and the fixing pins are released between the first fixing pin and the fastener, and between the second fixing pin and the fastener. It is characterized in that a tension spring for returning to its original state is provided.

As described above, according to the power transmission device for a walking type work machine according to the present invention, the ground can be drained to a certain depth by coupling a rotary or the like to the wheel driving unit, and a water pump, a spray sterilizer, It can be used in combination with lawn mowers, etc., so that it can be used for multiple purposes by combining a number of agricultural machines with one power transmission device, and the power transmission device is stable by the front support installed in the front and the rear support installed in the rear The effect that it can be used is obtained.

In addition, according to the power transmission device for a walking type work machine according to the present invention, an emergency stop lever is installed on the handle frame to emergency stop the engine in case of an emergency situation, and other agricultural machines can be operated by the casing and connection bushing of the power transmission assembly. It can be combined easily, and there is an effect that the combination and separation of the trailer can be made simple and easy by the trailer pin.

In addition, the present invention provides an effect of easily changing the direction of the steering unit up and down and left and right through a simple operation of the direction changing device and using this to easily change the direction of the walking type work machine, and minimizes the turning radius when changing the direction to reduce the fatigue of the operator This has the effect of preventing accidents.

1 is a three-dimensional view showing a power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
Figure 2 is a three-dimensional view showing the engine unit of the power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
3 is an exploded three-dimensional view showing a transmission unit, a front support, and a power transmission unit of the power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
4 to 5 are exploded three-dimensional views showing the transmission of the power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
6 is an exploded three-dimensional view showing a wheel driving unit of the power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
7 is an exploded three-dimensional view showing a steering unit of the power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
8 is an exploded three-dimensional view showing a direction change assembly of a power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
9 is an exploded three-dimensional view showing an emergency stop lever of the power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
10 is an exploded three-dimensional view showing an emergency stop lever of the power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
11 is an exploded three-dimensional view illustrating a power transmission assembly of a power transmission device for a walking type work machine according to a preferred embodiment of the present invention.
12 to 15 are views for explaining the structure of the direction changing device according to the second embodiment of the walking machine according to the embodiment of the present invention.
16 to 17 are views for explaining the structure of the angle change cable according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In the following description of the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, the terms to be described later are terms set in consideration of functions in the present invention, and these terms may vary according to the intention or custom of the producer producing the product, and definitions of terms should be made based on the content throughout this specification.

(Example)

The power transmission device for a walking type work machine according to a preferred embodiment of the present invention is based on the applicant's pre-registered "power transmission device for a walking type work machine" (Utility Registration No. 0489768), and the overall power transmission device configuration is shown It will be looked at again below with reference to FIGS. 1 to 11 .

The power transmission device in this embodiment transmits the engine unit 100 driven by the fuel supplied from the fuel tank, and the rotational force according to the driving of the engine unit 100 to the wheel driving unit 300 and the walking type work machine. The transmission unit 200 provided with a power transmission assembly, the wheel driving unit 300 installed replaceably in the lower part of the transmission unit 200 so as to be movable by the rotational force transmitted from the transmission unit 200, the wheel driving unit The steering unit 400 installed at the rear of the transmission unit 200 so that the 300 is moved and rotated in a desired direction, and the transmission unit 200 so that the rotational force of the transmission unit 200 is transmitted to the walking type work machine. and a power transmission unit 500 installed at the rear of the It includes a power transmission gear installed in the transmission unit 200 to transmit.

The power transmission device for a walking type work machine according to an embodiment of the present invention transmits the rotational force according to the driving of the engine unit 100 to the wheel driving unit 300 and the power transmission unit 500 at the same rotational speed as that of the engine. Of course, it allows the power transmission device to rotate freely forward and backward, left and right, and transmits power to rotary, double-edged resting machine, plastic covering working machine, water pump, spray sterilizer, vine remover, lawn mower, trailer, etc. Different types of walking agricultural machines can be freely attached to the delivery device and used.

That is, as shown in FIG. 1 , the power transmission device for a walking type work machine according to an embodiment of the present invention includes an engine unit 100 for generating a rotational force, and a transmission unit for transmitting the rotational force generated by the engine unit 100 . (200), a wheel drive unit 300 that receives rotational force from the transmission unit 200 and rotates to move the power transmission device, a steering unit 400 that converts the power transmission device to the left and right and front and rear directions in a desired direction, and Rotary, double-edged resting machine, plastic coating working machine, water pump, spray sterilizer, vine remover, lawn mower, a power transmission unit 500 installed at the rear of the transmission unit 200 to transmit rotational force to agricultural machines such as trailers.

On the other hand, the transmission unit 200 is provided with a power transmission gear to transmit the rotational force generated by the engine unit 100 with a large torque, and a rotary is directly coupled to the wheel driving unit 300 so as to spread the ground, and the The power transmission unit 500 is provided with a power transmission assembly to transmit rotational force to agricultural machinery such as a water pump and a spray sterilizer, and an emergency stop assembly is installed in the steering unit 400 to immediately drive the engine unit 100 in an emergency situation. make it stop

As shown in Figure 2, the power transmission device for a walking type work machine of the present invention is provided with an engine unit 100 to generate a rotational force. An engine assembly 111 is installed on one side of the engine unit 100 , and a gasket 112 is installed on one side of the engine assembly 111 .

In addition, a flange 113 is installed on one side of the engine assembly 111 , the flange 113 is fixed by a bolt 115 , and the rotational force of the engine assembly 111 is smoothly transmitted to the transmission unit 200 . A bearing 116 is installed so as to be possible.

A pressure release screw 117 is installed on the flange 113 to adjust the pressure of the engine assembly 111 , and an engine cover 121 is installed on the top of the engine assembly 111 .

The engine cover 121 is installed on the upper part of the engine assembly 111 and is separated by a bolt 118 , a flat washer 119 and a rubber washer 120 so that the engine cover 121 can be removed if necessary. installed possible.

In addition, a headlamp 122 for emitting light is installed on the front of the engine cover 121 , and an engine cover bracket 123 is installed on the front of the engine cover 121 .

In addition, a starter lever 125 is installed on one side of the engine assembly 111 , and a fuel tank 126 for supplying fuel is installed on an upper portion of the engine assembly 111 .

An air purifier 127 is installed at the rear of the engine assembly 111 to supply purified air, and an exhaust gas outlet ( 128) is installed.

3 is an exploded three-dimensional view showing the transmission unit 200 and the power transmission unit 500 of the present invention, as in FIGS. 1 and 3 , at the rear of the engine unit 100 , of the engine assembly 111 . The transmission unit 200 for transmitting the rotational force is installed.

A front support 150 for supporting the power transmission device at a predetermined height is provided in front of the transmission unit 200 so that the power transmission device is not conducted forward. A rear support stand 160 for supporting at a predetermined height is provided.

The front support 150 is installed in front of the mission unit 200, the front support 150 is a support 151 provided at a predetermined height, a bumper 152 installed on the bottom of the mission unit 200, It consists of an engine bracket 153 that is seated on the upper surface of the bumper 151 .

A bumper 152 is fixed to an upper end of the support 151 in a horizontal direction, and an engine bracket 153 is installed on an upper surface of the bumper 152 .

The bumper 152 and the engine bracket 153 are vertically fixed by a nut 154 and a bolt 158 , and the engine bracket 153 is in close contact with the transmission unit 200 and a nut 156 in the horizontal direction. ), a spring washer 156, a flat washer 157, and a bolt 159 are firmly installed.

The rear support 160 is installed to prevent the power transmission device from being overturned to the rear, and the rear support 160 is a central shaft adapter 161 and a central shaft adapter 161 that is height-adjustably installed. It consists of a shaft 162 and a rear assembly 166 installed between the transmission unit 200 and the central shaft adapter 161 .

The central shaft adapter 161 has a predetermined length so that the rear assembly 166 and the central shaft 162 are coupled, and a central shaft 162 formed at a predetermined height is provided at the rear of the central shaft adapter 161. do.

A plurality of holes are formed in the central shaft 162 at regular height intervals, and a fixing pin 163 and a coater for fixing the fixing pin 163 so that the central shaft 162 is coupled to the central shaft adapter 161 . (164) is provided.

In addition, a rear assembly 166 is installed between the transmission unit 200 and the central axis adapter 161 . In the rear assembly 166, a pair of plates are formed to be spaced apart by a predetermined interval so as to be coupled to the transmission unit 200, and a trailer pin 167 and a cotter are coupled to the rear of the rear assembly 166 so that a trailer is coupled. (168) is provided.

The transmission unit 200 is a wheel driving unit ( 300) consists of a power transmission unit assembly 202 to be installed.

5a shows the power transmission unit 500 coupled to the gearbox assembly 201 of the transmission unit 200, and FIG. 5b shows the wheel drive unit 300 coupled to the gearbox assembly 201. .

3 to 5, the gearbox assembly 201 of the transmission unit 200 is provided with a shaft 217 coupled to the engine unit 100, and a clutch core 211 is provided on one side of the shaft 217. are combined

In addition, a gear shift assembly 218 rotating together with the shaft 217 is coupled to the shaft 217 , and the clutch core 211 includes a washer 212 , a bearing 213 , and a washer 212 to be firmly coupled to the shaft 217 , The washer 214 and the bolt 215 are fastened.

In addition, a position spring 219 for adjusting the installation position of the shaft 217 is installed on the shaft 217 , and a fixture 220 is fixed to prevent the position spring 219 from being separated from the shaft 217 .

In addition, seals 221 are installed on both sides of the shaft 217 to maintain a sealed state, and bearings 222 are installed so that the shaft 217 rotates smoothly.

In addition, a double spur gear 231 is engaged with the gear shift assembly 218 to transmit rotational force to the wheel driving unit 300 , and a bevel gear shaft 232 is installed inside the double spur gear 231 .

The bevel gear shaft 232 is coupled to the double spur gear 231 by a flat key 233 , and a bearing 234 is coupled so that the bevel gear shaft 232 rotates smoothly.

In addition, a reverse shaft 241 is coupled to the gearbox assembly 201 to perform reverse movement, a seal 242 is installed on one side of the reverse shaft 241 to be sealed, and a reverse gear push is provided on the reverse shaft 241 . The plate 243 is coupled.

A reverse gear 244 is installed on the reverse shaft 241 , a seat spring 245 is installed so that the reverse gear 244 is stably coupled, and a reverse gear movement limiter 247 is installed on the reverse gear 244 . ) is installed, and a reverse gear spring 246 is installed between the reverse gear 244 and the reverse gear movement limiter 247, and a coater 248 and a nut so that the reverse gear spring 246 is stably installed. (249) is signed.

A bearing 251 is coupled to the other side of the shaft 217 , a first stopper washer 252 is installed at one side of the bearing 251 , and a gasket 254 is provided at one side of the first stopper washer 252 . is installed, and an oil sealing plate 255 is installed to the gearbox assembly 201 by bolts 256 on one side of the gasket 254 .

In addition, a position pin 261 for adjusting the position of the shaft 217 is installed in the gear box assembly 201, and the position pin 261 is formed by a washer 262, a spring washer 263 and a bolt 264. It is coupled to the gearbox assembly 201 .

In addition, the gear box assembly 201 is provided with a clutch line 265, the clutch line 265 is fastened to the gear box assembly 201 to the nut 266.

6 is an exploded three-dimensional view showing a wheel driving unit of the power transmission device for a walking type work machine according to a preferred embodiment of the present invention.

4 to 6, the wheel driving unit 300 is installed on the lower surface of the gearbox assembly 201, and the tire 361 is coupled to the wheel driving unit 300 so that the power transmission device moves. A rotary (not shown) for plowing the ground is installed.

A power transmission assembly 202 is installed at a lower portion of the gearbox assembly 201 , and a crank cabinet 317 is installed in the power transmission assembly 202 so that a wheel output shaft 341 is installed.

A bevel gear 311 is installed on the bottom surface of the gearbox assembly 201, a bearing 312 is coupled to the bevel gear 311, and between the gearbox assembly 201 and the power transmission assembly 202 A shaft gasket 313 is installed.

A crank cabinet 317 is fixed to the power transmission assembly 202 , and an oil drain plug 318 is installed on a bottom surface of the crank cabinet 317 to drain oil.

A bolt 319 is fastened to the power transmission assembly 202 to be firmly installed on the gearbox assembly 201 , and a spring washer 321 and a flat washer 320 are installed to the bolt 319 together.

A shaft spacer 342, a washer 343, and a bearing 344 are installed on the wheel output shaft 341, and a working bevel gear 345 engaged with the bevel gear shaft 331 is installed on the wheel output shaft 341. and a gasket 346 in close contact with the crank cabinet 317 is installed.

A bearing 347 is installed on the wheel output shaft 341 , and a flange 348 is installed on an outer surface of the crank cabinet 317 .

A gearbox guard 350 for stably coupling the wheel output shaft 341 is installed on the flange 348, and an oil seal 351 is provided on the inner surface of the gearbox guard 350, and the gearbox guard 350 ) is installed closely on the flange 348 by a flange bolt 349, a spring washer 353, and a flat washer 354.

As shown in FIG. 6 , the tires 361 are respectively installed on both sides of the wheel output shaft 341 .

The wheel driving unit 300 includes a tire 361 , a tire shaft 362 is fixed to one side of the tire 361 , and the tire shaft 362 is detachably hollow to the wheel shaft 341 . formed in the shape

In addition, the tire shaft 362 is provided with a fixing pin 363 and a coater 366 to be firmly installed on the wheel shaft 341 , and the tire shaft 362 is connected to the tire by a bolt 364 and a nut 365 . It is installed on the shaft 362 .

As shown in FIGS. 5A and 7 , in the steering unit 400 , a clutch fork shaft 411 is installed on one side of the gearbox assembly 201 , and the clutch fork shaft 411 has a clutch fork 412 . is installed

A bolt 413 and a coater 414 are installed on the clutch fork 412 so that the clutch fork shaft 411 is firmly installed, and a seal 415 is coupled to one side of the clutch fork 412, and the clutch A bush 416 is coupled to the other side of the fork 412 .

A holder clutch 417 is coupled to the clutch fork shaft 411 , and a pair of washers 419 and a nut 420 are coupled to the holder clutch 417 .

In addition, a shift arm 431 is installed on the other side of the gearbox assembly 201 , and a bush 432 and a fork shaft 433 are installed on one side of the shift arm 431 .

A shift fork 434 is installed on the fork shaft 433 , a coater 436 and a washer 437 are installed on the shift fork 434 , and a flat washer 440 is installed on the other side of the shift arm 431 . , the spring washer 441 and the nut 442 are fastened.

As shown in FIG. 7 , the steering unit 400 has a handle frame 451 installed at the rear of the transmission unit 200 so that the power transmission device can be freely adjusted in the left and right directions and in the vertical direction.

A rubber handle 452 is coupled to the front end of the handle frame 451 , and an accelerator 453 for controlling the operation of the engine unit 100 is installed on one side of the handle frame 451 , each of the handle frames 451 . Brake handles 454 and 455 are installed to change the direction to the left or right.

Fixing pins 456 and 457 are respectively installed at upper and lower sides of the brake handles 454 and 455 to rotate by a predetermined angle on the handle frame 451 .

Wires 458 and 460 are respectively connected to the brake handles 454 and 455 , and a tool box 461 is installed in the handle frame 451 , and the tool box 461 is a handle frame by a bolt 462 . It is fixed at (451).

In addition, a case 463 is provided in the tool box 461 , and a cover 464 is installed in the case 463 to be opened and closed, and the cover 464 is installed to be opened and closed by a hinge 465 .

A direction changing assembly 470 for freely changing the direction of the power transmission device in the left and right or up and down directions is installed on one side of the handle frame 451, and the direction changing assembly 470 allows the operator to easily operate the handle frame 451 It is installed so that it can rotate freely in the up-down direction and left and right direction so that it can be adjusted.

As shown in FIG. 8 , the direction changing assembly 470 is fixed such that a lower gear 473 is formed on the upper surface of the frame 472 , and a rotation bracket 474 is coupled to the upper surface of the lower gear 473 . An axis 473a is formed.

In addition, an upper gear 475 is formed on a bottom surface of the rotation bracket 474 to correspond to the lower gear 473 , and side gears 476 are formed on both sides of the rotation bracket 474 , respectively.

7 and 8, a handle height adjustment lever 477 is installed on one side of the direction change assembly, and the handle height adjustment lever 477 is oriented by a bearing 478 and a washer 479. It is rotatably installed on the conversion assembly 470 .

In addition, a plate 481 is installed on the other side of the direction changing assembly 470 , a case 482 is installed on the upper surface of the plate 481 , and the case 482 is installed by bolts 483 and 484 . do.

An emergency stop lever 490 is installed on the handle frame 451 , and the emergency stop lever 490 enables the engine unit 100 to be emergency stopped during operation.

9 and 10 , the emergency stop lever 490 includes a rotary lever 491 formed in a predetermined length, a bracket 492 installed to correspond to the rotary lever 491, and the bracket 492 ), a switch 493 for emergency stop of the engine unit 100 is installed.

In addition, a rotation frame 494 is rotatably installed on the bracket 492 , and a stop plate 495 for moving the switch 493 forward and backward is installed on the rotation frame 494 .

5A, a power transmission unit 500 is installed at the rear of the transmission unit 200 to transmit the rotational force generated by the engine unit 100 to a spray sterilizer, a water pump, a vine remover, a lawn mower, and the like.

A line 511 is coupled to the tip of the shaft 217 , an O-ring 512 is installed on one side of the line 511 , and a spindle sleeve 513 is installed on the other side of the line 511 .

In addition, a seal 514 and a second stopper washer 515 are installed on the spindle sleeve 513 , a round nut 516 is fastened on the second stopper washer 515 , and a keyset is provided on the spindle sleeve 513 . 518 is coupled, and the key set 518 is firmly fixed by a flat key 517 .

In addition, a washer 519 and a nut 520 are fastened to one side of the key set 518 , and a power transmission assembly 530 is installed at the tip of the spindle sleeve 513 by a bolt 521 .

The power transmission assembly 530 transmits rotational force to the pump or lawn mower of the water pump by driving the engine unit 100 by coupling agricultural machines that require power, such as a water pump or a spray sterilizer.

As shown in FIG. 11 , the power transmission assembly 530 has a fixed cover 531 fixed to the rear surface of the gearbox assembly 201, and a predetermined length to transmit a rotational force to the inside of the fixed cover 531. The coupling shaft 532 to be installed, the casing 535 fastened to the outer surface of the fixed cover 531, and the coupling bushing 540 coupled to the coupling shaft 532 to transmit rotational force to the water pump or spray sterilizer, etc. includes

The fixing cover 531 is formed to have a predetermined diameter, and the connecting shaft 532 has protrusions protruding at regular intervals. In addition, the casing 535 is fastened so that the connecting shaft 532 is not exposed to the outside in a state in which a water pump or a spray sterilizer is connected, and a handle 536 protruding outward so as to be coupled to and separated from the fixed cover 531 . ) is formed.

In addition, a cover protrusion 537 protruding inwardly is formed on the casing 535 , and the connecting bushing 540 is formed as a hollow having a predetermined length, and the hollow is inserted into the protrusion of the connecting shaft 532 . A key groove 541 is formed so as to be coupled, and a bolt hole 542 is formed in the bushing 540 for connection to be fastened with a bolt.

Since the configuration according to the above embodiment is a known technology disclosed in the applicant's pre-registered "Power Transmission Device for Walking Type Work Machine" (Utility Registration No. 0489768), additional technical description will be omitted.

On the other hand, as shown in the accompanying drawings 12 to 17, the direction changing device in the present invention is installed with the arm 501 of the power transmission unit 500 and the steering bar 401 of the steering unit 400 It consists of a direction control unit 1000, an operation lever 1300 provided on a handle including a steering unit 400, and an angle change cable 1200 that connects and operates the direction control unit 1000.

The operation lever 1300 is made of one, and the angle changing cable 1200 to be described below is operated by the operation of the operation lever 1300 to form a left and right rotation angle fixing bracket 1110 and a vertical rotation angle fixing bracket 1130. ), the direction change of the walking type work machine is made by locking/unlocking it.

The direction control unit 1000 is installed in conjunction with the left and right rotation angle fixing bracket 1110 provided on the arm 501 of the power transmission unit 500 and the steering bar 401 of the steering unit 400 to rotate the left and right sides. It consists of a left and right rotation angle adjustment bracket 1120 that is rotatably coupled to the upper end of the angle fixing bracket 1110 and a vertical rotation angle fixing bracket 1130 that is fixedly installed on the steering bar 401 .

And the left and right rotation angle adjustment bracket 1120 is made to be rotatable with the left and right rotation angle fixing bracket 1110 by a hinge shaft 1121, and a first fixed tube 1122 in which a first cable 1230 is fixedly installed on one side. is provided, and a second fixing tube 1123 to which the second cable 1240 is fixedly installed is provided on the other side.

A plurality of intermittent holes 1111 and 1131 are provided in each of the left and right rotation angle fixing bracket 1110 and vertical rotation angle fixing bracket 1130, and a first cable 1230 and a second cable 1240 are provided. It is locked/released through the direction change.

At this time, the intermittent holes 1111 of the left and right rotation angle fixing bracket 1110 are provided at regular intervals in a cylindrical shape around the hinge shaft 1121, and the angle of the intermittent hole and the intermittent hole is preferably 15 to 20 degrees, The present invention is not limited thereto and may be configured at various angles.

On the other hand, it is preferable that the left and right rotation angle fixing bracket 1110 is made horizontally.

And the vertical rotation angle fixing bracket 1130 is provided with an acute angle and an arc shape on the front side, it is preferable to configure the vertical and left and right rotation angle fixing bracket 1110 of the steering bar 401 vertically, and the intermittent hole 1131 The angle of the intermittent hole 1131 and the intermittent hole 1131 is preferably provided at about 8 to 12 degrees, but is not limited thereto and may be configured at various angles.

The angle change cable 1200 has one end interlocked with the operation lever 1300 of the steering unit 400 and the other end of the main cable 1210 connected to the distributor 1220, and the distributor 1220. The first cable 1230 interlocked with the main cable 1210 and the end of the first cable 1230 are installed as the first fixing tube 1122 of the left and right rotation angle adjustment bracket 1120 to control the left and right rotation angle of the steering unit. A first fixing pin 1231 to the end of the second cable 1240 and the second cable 1240 that is interlocked with the main cable 1210 connected to the distributor 1220, a right and left rotation angle adjustment bracket 1120 ) is installed as a second fixing pipe 1123 and consists of a second fixing pin 1241 that controls the vertical rotation angle of the steering unit.

And the first cable 1230 and the second cable 1240 are provided with fasteners 1232 and 1242 for fixing the first and second fixing pins 1231 and 1241, and the first fixing pins are provided. Between the 1231 and the fastener 1232 , the second fixing pin 1241 and the fastener 1242 , the first and second fixing pins 1231 and 1241 are released, and a tension spring 1233 for returning to its original state. ) (1243) is provided.

That is, while the first fixing pin 1231 of the first cable 1230 is introduced into the first fixing tube 1122, the fastener 1232 is fastened to the first fixing tube, but the outer periphery of the fastener and the first It is preferable to form a screw on the outer periphery of the fixed tube and screw-fasten it.

In addition, the second fixing pin 1231 of the second cable 1240 fastens the fastener 1242 to the second fixing tube in a state in which it is introduced into the second fixing tube 1123, but the outer periphery of the fastener and the second It is preferable to form a screw on the outer periphery of the fixed tube and screw it.

The left and right rotation operation and the vertical rotation operation of the present invention configured as described above are performed as follows.

First, the angle change cable 1200 is pulled by operating the operation lever 1300, and the first and second cables 1230 and 1240 are pulled accordingly, thereby pulling the first and second fixing pins 1231 and 1241. ) is reversed, and the left and right rotation angle fixing bracket 1110 and vertical rotation angle fixing bracket 1130 are released.

That is, when it is necessary to adjust the vertical rotation of the steering unit 400, when the operation lever 1300 is operated, the first introduced into the intermittent holes 1111 and 1131 of the left and right and vertical rotation angle fixing brackets 1110 and 1130 , 2 fixing pins 1231 and 1241 are released, and at this time, when the operating lever 1300 is released after setting the angle by rotating the steering unit 400 up and down, the first and second fixing pins 1231 and 1241 are released. It is returned to its original state by the elastic force of the tension springs 1233 and 1243 and the interruption is made again.

In addition, when the direction of the walking-type work machine is changed, when the operation lever 1300 is operated as described above, the first and second The fixing pins 1231 and 1241 are released, and when the operating lever 1300 is released after setting the angle by rotating the steering unit 400 left and right, the released first and second fixing pins 1231 and 1241 are tension springs. It is returned to its original state by (1233) and (1243), and intermittent control is made again.

In this state, if the steering unit 400 is pushed to the left or right, the direction of the walking type work machine can be changed through the minimum turning radius.

That is, when the walking type work machine turns left, the operation lever 1300 is operated to make the left turn in the released state of the fixing pin, and then the lever is released and the left turn is attempted in the state where the intermittent operation is made.

When turning a sharp corner, if the direction is changed by the above method, there is an advantage in that the corner can be turned through a minimum turning radius.

In addition, since it is possible to rotate with a minimum turning radius, the fatigue of the driver can be reduced.

In addition, in this direction changing device, by operating the lever, the first and second fixing pins 1231 and 1241 are released at the same time in the intermittent holes 111 and 131 so that the up and down and left and right directions can be switched at the same time, so that the direction can be changed more smoothly can be done

The specific embodiments of the present invention have been described above.

However, the spirit and scope of the present invention is not particularly limited to these specific embodiments, and it is common knowledge in the art that various modifications and variations are possible without changing the gist of the present invention. Those who have should understand.

Accordingly, since the above-described embodiments are provided to fully inform those of ordinary skill in the art to which the present invention pertains to the scope of the invention, it should be understood that they are exemplary in all respects and not limiting, is only defined by the scope of the claims.

100: engine unit 200: mission unit
300: wheel driving unit 400: steering unit
500: power transmission unit 501: female
1000: direction control unit 1110: left and right rotation angle fixing bracket
1111, 1131: intermittent hole 1120: left and right rotation angle adjustment bracket
1121: hinge shaft 1122: first fixed tube
1123: second fixing tube 1130: vertical rotation angle fixing bracket
1200: angle change cable 1210: main cable
1220: distributor 1230: first cable
1231: first fixing pin 1232,1242: fastener
1233,1243: tension spring 1240: second cable
1241: second fixing pin 1300: operation lever

Claims (13)

an engine unit driven by fuel supplied from the fuel tank;
a transmission unit provided with a power transmission assembly to transmit rotational force according to the driving of the engine unit to a wheel driving unit and a walking type work machine;
a wheel driving unit that is replaceably installed in the lower portion of the transmission unit so as to be movable by the rotational force transmitted from the transmission unit;
a steering unit installed at the rear of the transmission unit so that the wheel driving unit moves and rotates in a desired direction;
It consists of a power transmission unit installed at the rear of the mission unit so that the rotational force of the transmission unit is transmitted to the walking type work machine,
A direction changing device that is installed in conjunction with the steering unit and the power transmission unit to convert the vertical rotation angle of the steering unit, and converts the left and right rotation angles of the steering unit and the power transmission unit to ensure smooth operation of the walking type work machine; is included,
The direction change device,
A direction control unit installed with the arm of the power transmission unit and the steering bar of the steering unit;
It is provided with an angle changing cable that connects and operates an operation lever provided on a handle including a steering unit and the direction control unit,
The direction control unit,
A left and right rotation angle fixing bracket provided on the arm of the power transmission unit,
It consists of a left and right rotation angle adjustment bracket that is installed in conjunction with the steering bar of the steering unit so as to be rotatably coupled to the upper end of the left and right rotation angle fixing bracket, and a vertical rotation angle fixing bracket that is fixedly installed on the steering bar,
The left and right rotation angle adjustment bracket is made to be rotatable with the left and right rotation angle fixing bracket by a hinge shaft, a first fixing tube to which the first cable is fixedly installed is provided on one side, and a second cable is fixedly installed to the other side A fixed tube is provided,
A plurality of intermittent holes are provided in each of the left and right rotation angle fixing bracket and the vertical rotation angle fixing bracket, and the direction is changed by locking/unlocking through the first cable and the second cable,
The angle change cable is
One end is installed interlocking with the operation lever of the steering unit, and the other end is a main cable connected to the distributor,
A first cable interlocked with the main cable connected to the distributor and a first fixing pin installed as a first fixing tube of a left-right rotation angle adjustment bracket at the end of the first cable to control the left-right rotation angle of the steering unit;
A second cable interlocked with the main cable connected to the distributor and a second fixing pin installed as a second fixing pipe of a left and right rotation angle adjustment bracket at the end of the second cable to control the vertical rotation angle of the steering unit; A direction change device for a walking type work machine that works by transmitting power in a direct gear method.
The method of claim 1,
The engine unit,
Engine assembly driven by fuel supplied from the fuel tank, an air purifier installed at one side to supply purified air to the rear, and an exhaust gas outlet installed at one side of the air purifier to discharge exhaust gas burned in the engine assembly is installed, a gasket is installed on one side of the engine assembly, a flange is installed on one side of the engine assembly, the flange is fixed by a bolt, and a bearing is installed so that the rotational force of the engine assembly is smoothly transmitted to the transmission unit, , A pressure release screw is installed on the flange to adjust the pressure of the engine assembly, an engine cover is installed on the upper part of the engine assembly, the engine cover is installed on the engine assembly, and the engine cover is removed as needed It is detachably installed by bolts, flat washers and rubber washers so that A device for changing the direction of a walking machine that works by transmitting power through a gear method. The method of claim 1,
The mission unit,
The engine unit is provided with a front support installed in front of the engine unit so as not to be conducted forward during movement and rotation, and a power transmission assembly is provided to transmit the rotational force according to the driving of the engine unit to the wheel driving unit and the walker, and a gearbox assembly is provided with a shaft coupled to the engine unit, a clutch core is coupled to one side of the shaft, and a gear shift assembly rotating together with the shaft is coupled to the shaft, and the clutch core is a washer and bearing so as to be firmly coupled to the shaft , the washer and the bolt are fastened, and a position spring for adjusting the installation position of the shaft is installed on the shaft, a fixture is fixed to prevent the position spring from being separated from the shaft, and seals are provided on both sides of the shaft to maintain a sealed state A bearing is installed so that the shaft rotates smoothly, a double spur gear is engaged to transmit a rotational force to the wheel driving unit in the gear shift assembly, a bevel gear shaft is installed inside the double spur gear, and the bevel gear shaft is flat It is coupled to the double spur gear by a key, the bearing is coupled so that the bevel gear shaft rotates smoothly, the reverse shaft is coupled to the gearbox assembly so that the reverse is performed, and a seal is installed on one side of the reverse shaft to be sealed. , a reverse gear push plate is coupled to the reverse shaft, a reverse gear is installed on the reverse shaft, a seat spring is installed so that the reverse gear is stably coupled, and a reverse gear movement limiter is installed on the reverse gear, and the reverse gear is installed. A reverse gear spring is installed between the gear and the reverse gear movement limiter, a coater and a nut are fastened to stably install the reverse gear spring, a bearing is coupled to the other side of the shaft, and a first stopper is provided on one side of the bearing A washer is installed, a gasket is installed on one side of the first stopper washer, an oil sealing plate is installed on the gearbox assembly by a bolt on one side of the gasket, and a position pin for adjusting the position of the shaft is provided on the gearbox assembly installed, and the position pin is coupled to the gearbox assembly by a washer, a spring washer and a bolt, and the gearbox assembly has a clutch. A line is installed, and the clutch line is fastened to a gearbox assembly with a nut. The method of claim 1,
The wheel drive unit,
It is installed on the lower surface of the gearbox assembly, and the wheel driving unit is provided with a tire coupled to the wheel drive unit to move the power transmission device, as well as a rotary for plowing the ground. A crank cabinet is installed to install a wheel output shaft, a bevel gear is installed on a bottom surface of the gearbox assembly, a bearing is coupled to the bevel gear, and a shaft gasket is installed between the gearbox assembly and the power transmission assembly, A crank cabinet is fixed to the power transmission assembly, an oil drain plug is installed on a bottom surface of the crank cabinet to drain oil, and a bolt is fastened to the power transmission assembly to be securely installed in the gearbox assembly, and the bolt is installed with a spring washer and a flat washer, a shaft spacer, a washer and a bearing are installed on the wheel output shaft, a working bevel gear engaged with the bevel gear shaft is installed on the wheel output shaft, and a gasket in close contact with the crank cabinet A bearing is installed on the wheel output shaft, a flange is installed on the outer surface of the crank cabinet, a gearbox guard for stably coupling the wheel output shaft is installed on the flange, and an oil seal is provided on the inner surface of the gearbox guard and the gearbox guard is a direction changing device for a walking type work machine that works by transmitting power in a direct gear method, characterized in that it is installed closely on the flange by a flange bolt, a spring washer, and a flat washer. The method of claim 1,
The steering unit,
A lower gear formed on the upper surface of the handle frame to rotate the handle frame in vertical and horizontal directions with respect to the transmission unit, a fixed shaft formed at a predetermined height such that a rotation bracket is coupled to the upper surface of the lower gear, and the lower gear a rotation bracket having an upper gear formed on a bottom surface to be coupled correspondingly, and a direction changing assembly including side gears formed on both sides of the rotation bracket, respectively, and the rear of the transmission unit so that the wheel driving unit moves and rotates in a desired direction A direction change device for a walking type work machine that works by transmitting power in a direct gear method, characterized in that it is installed in the The method of claim 1,
The power transmission unit,
A rotating lever formed to have a predetermined length in the steering unit, a bracket installed to correspond to the rotating lever, a switch installed on the bracket to emergency stop the engine unit, a rotating frame rotatably installed on the bracket, and front and rear of the switch It is composed of a stop plate installed on the rotating frame to move the engine and includes an emergency stop lever for emergency stop driving of the engine unit, characterized in that it is installed at the rear of the transmission unit so that the rotational force of the transmission unit is transmitted to the walking machine. , a direction change device for a walking type work machine that works by transmitting power directly through the gear method. The method of claim 1,
The mission unit,
and a power transmission gear installed in the transmission unit to transmit the rotational force of the engine unit to the wheel driving unit and the power transmission unit at the same rotational speed; a rear support installed at the rear of the transmission unit to prevent the power transmission device from being overturned to the rear; a central shaft installed on the central shaft adapter so as to be adjustable in height; A direction changing device for a walking type work machine that works by transmitting power in a direct gear method, characterized in that it includes; a rear assembly installed between the transmission unit and the central shaft adapter.
The method of claim 1,
The power transmission unit further includes a power transmission assembly installed to transmit rotational force to a water pump, a spray sterilizer, a lawn mower, and the like;
The power transmission assembly may include a fixed cover fixed to the rear surface of the gearbox assembly;
a shaft for connection installed with a predetermined length to transmit rotational force to the inside of the fixed cover;
a casing fastened to the outer surface of the fixed cover;
A direction changing device for a walking type work machine that works by directly transmitting power in a gear method, including a connecting bushing coupled to the connecting shaft to transmit rotational force to a water pump or a spray sterilizer. delete delete delete delete The method of claim 1,
The first cable and the second cable are provided with fasteners for fixing the first and second fixing pins, and the fixing pins are released between the first fixing pin and the fastener, and between the second fixing pin and the fastener. A direction changing device for a walking type work machine that works by transmitting power in a direct gear method, characterized in that a tension spring for returning to its original state is further provided.

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