KR101055906B1 - Stepless speed change control device for passenger rice transplanter - Google Patents

Abstract

The present invention relates to a continuously variable control apparatus for a passenger rice transplanter, the foot pedal being rotated in the forward and backward directions by the user's foot operation; A power transmission member extending in a vertical direction of the center of the rotational shaft of the foot pedal to transmit rotational force in a transverse direction of the gas; A shaft support portion configured to axially couple the power transmission member to the vehicle body in a rotatable state; A first rotating arm rotated in a state extending perpendicularly to an outer diameter of the power transmission member; A link in which a first end of the first rotary arm is pivotally connected and linearly moved; It is characterized by consisting of a configuration including a variable valve to change the capacity of the hydraulic pump in conjunction with the linear movement of the link.

The present invention, as the shift operation is made by the stepping pedal operation, there is a convenience that can perform other operations instead of using a hand for the shift operation.

Passenger rice transplanter, continuously variable transmission, foot pedal

Description

Continuously variable control device for passenger rice transplanter {CONTROL DEVICE FOR A CONTINUOUSLY VARIABLE TRANSMISSION}

1 is a perspective view schematically showing the structure of a continuously variable control device according to the present invention.

Figure 2 is a plan view schematically showing a state in which the continuously variable speed control apparatus according to the present invention is installed in a passenger rice transplanter.

3 is a front view schematically showing a state where the continuously variable speed control apparatus according to the present invention is installed in a passenger rice transplanter.

Figure 4 is an enlarged view of the main portion showing only the continuously variable speed control device of FIG.

Figure 5 is a schematic diagram showing a pedal lock of the continuously variable control device according to the invention.

Figure 6 is a conceptual diagram schematically showing the interlocking relationship between the foot pedal and the governor lever of the continuously variable control device according to the present invention.

7 is a perspective view showing another embodiment of the power transmission member according to the present invention.

8 is a schematic diagram showing another embodiment of the foot pedal of the continuously variable control device according to the present invention.

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

100: continuously variable control device 110: foot pedal

111: shaft coupling portion 113: scaffolding portion

115: pedal wire 116: wire arm

117: governor lever 118: accelerator wire

119: fuel injection device 120: power transmission member

121: first rotating arm 123: second rotating arm

130: shaft support member 131: body fixing

133: bearing support 150: link

151: length member 153: cap

155: connection port 155a: screw portion

160: variable valve 170: neutral return device

180: shock absorber 190: pedal lock

191: Pedal support plate 191a: tooth part

193: fixing bracket 193a: fixing key

200: continuously variable transmission 300: mission

400: engine 410: output shaft

500: rear wheel

The present invention relates to a continuously variable control apparatus for a passenger rice transplanter, and particularly in an agricultural vehicle using a hydrostatic continuously variable transmission apparatus, by allowing a shift operation to be performed by stepping pedal operation without using a hand. The present invention relates to a continuously variable control apparatus of a passenger rice transplanter, which can be easily adapted to general passengers who are not familiar with the method of operating a continuously variable transmission, and to focus more on the operation of a work device such as a rice transplanter.

In general, a hydrostatic CVT used in a continuously variable steering vehicle such as a rice transplanter allows a shift to be made by varying the capacity of the hydraulic pump by a valve operation. At this time, the speed ratio of the forward / reverse side is controlled by adjusting the capacity of the hydraulic pump from zero to the maximum value.

The conventional continuously variable speed control device for controlling the capacity of the hydraulic pump is configured to operate the lever by hand, and the hydraulic valve operation is performed by the link and the power transmission member linked to the lever.

As such a conventional technique, as in Japanese Patent Laid-Open No. 2002-87099 (02.3.26), a technique has been proposed in which the hydrostatic stepless speed change operation is carried out by hand to move forward and backward.

However, such a prior art, since the shift operation by the hand is made during the forward / reverse, there is a hassle to shift the operation using the hand during the busy operation, such as the transfer operation, and thus the work is temporarily stopped. There was a problem that the efficiency was greatly reduced.

In addition, the shift operation method of the prior art has a problem that the shift operation by the hand is awkward, and not easily skilled because most drivers are used to driving habits of the vehicle.

An object of the present invention for solving the above problems is in a farming vehicle using a hydrostatic continuously variable transmission device, by the stepless pedal operation without the use of the hand by the stepless pedal operation, by the stepless transmission operation method by hand. It is to provide a continuously variable control device for a passenger rice transplanter that can be easily adapted to ordinary passengers who are not familiar with it, and to focus more on the operation of a work device such as a rice transplanter by hand.

In addition, another object of the present invention is to operate the governor lever acting as an accelerator pedal of a general passenger car in conjunction with the foot pedal, after the shift of the continuously variable transmission, the need of a separate engine RPM (speed) operation of the passenger transplanter. The present invention provides a continuously variable control device.

Still another object of the present invention is to install a passenger pedal by allowing a foot pedal, a pedal fixing device for fixing the foot pedal, and an interlock device for interlocking the governor lever and the governor lever to be installed on the opposite side of the hydrostatic CVT. The present invention provides a continuously variable control apparatus for a rice transplanter that distributes space and balances the weight with a hydrostatic CVT.

In accordance with the present invention, the continuously variable speed control apparatus for a passenger transplanter according to the present invention has a hydrostatic stepless transmission on one side of a mission, and the engine is located in front of the mission. In a passenger rice transplanter equipped with an output shaft is mounted in the lateral direction, the rear wheel and a planting device capable of planting at the rear of the mission,

The hydrostatic CVT is interlocked by a foot pedal to operate shifting and acceleration / deceleration, and the foot pedal is characterized in that a neutral return device is installed.

Another embodiment of the continuously variable speed control apparatus for a passenger rice transplanter according to the present invention for achieving the above object is equipped with a hydrostatic continuously variable transmission on one side of the mission, based on the traveling direction of the gas, the output shaft of the engine is transverse Mounted in the direction, the rear of the mission is equipped with a planting apparatus capable of rear wheel and planting work in a passenger rice transplanter,

The hydrostatic continuously variable transmission is linked to the rotational power of the power transmission member rotates together in conjunction with the foot pedal operation, the foot pedal structure is characterized in that it is installed on the opposite side of the hydrostatic continuously variable control device.

Another embodiment of the continuously variable speed control apparatus for a passenger rice transplanter according to the present invention for achieving the object, the foot pedal to be rotated in the forward and reverse direction by the user's foot operation; A power transmission member extending in a vertical direction of the center of the rotational shaft of the foot pedal to transmit rotational force in a transverse direction of the gas; A shaft support portion configured to axially couple the power transmission member to the vehicle body in a rotatable state; A first rotating arm rotated in a state extending perpendicularly to an outer diameter of the power transmission member; A link in which a first end of the first rotary arm is pivotally connected and linearly moved; It is characterized by consisting of a configuration including a variable valve to change the capacity of the hydraulic pump in conjunction with the linear movement of the link.

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

1 is a perspective view schematically showing a structure of a continuously variable control device according to the present invention, Figure 2 is a plan view schematically showing a state in which the continuously variable control device according to the present invention is installed in a passenger rice transplanter, Figure 3 4 is a front view schematically showing a state where the continuously variable speed control apparatus according to the present invention is installed in a passenger rice transplanter, and FIG. 4 is an enlarged view illustrating main parts of only the continuously variable speed control apparatus of FIG. 3.

Referring to the schematic structure of a passenger rice transplanter to which the continuously variable speed control device according to the present invention as shown in the same drawing is applied, the hydrostatic stepless endlessness is applied to one side of the mission 300 based on the traveling direction of the gas. Transmission 200 is mounted, the output shaft 410 of the engine 400 is mounted in the transverse direction in front of the mission 300, the rear wheel 500 and the planting planting operation is possible to the rear of the mission 300 An apparatus (not shown) is installed.

At this time, the hydrostatic stepless transmission 200 is shifted by the continuously variable speed control device 100 capable of operating the foot pedal 110. Referring to the configuration of the continuously variable speed control device 100, first, the foot pedal The 110 is installed on at least one of the left and right sides of the body of the rice transplanter in a state of being rotated in the forward and backward directions by the user's foot operation.

In this case, the foot pedal 110 is preferably installed on the opposite side of the hydrostatic CVT 200 as shown in FIG.

In addition, the foot pedal 110 may be installed at both ends of the left and right sides of the gas to be selectively operated according to the needs of the operator, each foot pedal 110 at this time may be installed to be operated simultaneously or individually operated. .

As described above, when the foot pedal 110 is operated individually, any one of them may be used as a forward operation pedal and the other may be used as a reverse operation pedal.

In addition, a power transmission member 120 is installed to extend in the direction of the rotational axis of the foot pedal 110 so that rotational force is transmitted in the transverse direction of the gas, and the power transmission member 120 uses the shaft support member 130. It is coupled to the vehicle body in a rotatable state.

The first rotary arm 121 is vertically installed and rotated on the outer diameter of the power transmission member 120, and one end of the link 150 is pivotally connected to the front end of the first rotary arm 121 so as to linearly move. Done.

At this time, the variable valve 160 is installed to be linked to the linear motion of the link 150 to vary the capacity of the hydraulic pump to the shift operation of the continuously variable transmission (200) is made.

The foot pedal 110 is composed of a shaft coupling portion 111 is formed in the center of the rotation shaft at the bottom, and the footrest portion 113 is horizontally coupled to the top of the shaft coupling portion 111. At this time, the state in which the scaffolding portion 113 is horizontal in a neutral state with respect to the center of the rotation axis becomes a neutral state, and the state in which the scaffolding portion 113 is inclined toward the front side (counterclockwise in the drawing) is a forward state of the gas. The state inclined to the rear side (clockwise in the drawing) becomes the reverse state of the body.

The power transmission member 120 is made of a bar-shaped bar (bar), it is installed in the transverse direction of the gas. In this case, the power transmission member 120 is fixedly installed by a plurality of shaft support members 130 to maintain a rotatable state.

In this case, the power transmission member 120, as well as the bar (bar), as well as the cable 120 as shown in Figure 7 may be used. At this time, the cable 120 is installed in the fiber core in the state capable of flowing, the fiber tube is fixed at both ends by a bracket or the like, by pulling or restoring both sides of the iron core using a lever or the like, a predetermined distance or more Ensure power transfer to a remote location.

In addition, the power transmission member 120 may be a chain, drive belt, gear and link coupling structure and the like.

As described above, the shaft support member 130 has a vehicle body fixing portion 131 formed at one end thereof to be fixed to the vehicle body, and a bearing support portion 133 formed at the other end thereof to support the shaft support member 130 in a rotatable state. do.

At this time, one end of the power transmission member 120 supported by the shaft support member 130 is an input shaft for inputting the rotational force, the other end is an output shaft for outputting the rotational force, the input shaft is the foot pedal 110 The first rotary arm 121 is coupled to the output shaft.

The first rotary arm 121 is rotated in a state extending perpendicular to the outer diameter of the power transmission member 120, the link 150 is coupled to the outermost front end of the first rotary arm 121 is coupled.

The link 150 serves to convert the rotational movement of the first rotary arm 121 into a linear movement, the length member 151 having a thread tab formed at both ends, and at both ends of the length member 151, respectively. It is composed of a hemispherical cap 153 which is lengthwise adjusted by being screwed to the left and right, and a spherical connector 155 that is mated and multiaxially rotated in the respective caps 153.

The threaded portion 155a is extended to each connection port 155 to be coupled with the variable valve 160 of the link 150 and the hydrostatic stepless speed transmission 200.

The variable valve 160 is rotated in conjunction with the linear movement of the link 150, the role of varying the capacity of the hydraulic pump by the amount of rotation.

Figure 5 is a schematic diagram showing a pedal fixing device 190 of the continuously variable control device 100 according to the present invention, as shown in the figure so as to enable locking and unlocking on one side of the center of rotation of the foot pedal 110 By the pedal fixing device 190 installed, the operation state of the foot pedal 110 can be fixed and maintained.

The pedal fixing device 190 is a pedal support plate 191 is formed in the rotation radius of the shaft coupling portion 111 of the foot pedal 110, and a fastener 191 for limiting the rotation of the pedal support plate 191 It is composed of

The front end of the pedal support plate 191 forms a curved surface of the same center as the center of the rotation axis of the shaft coupling portion 111, and forms a tooth portion 191a of equal intervals on the curved surface.

In addition, a fixing key 193a is formed at the distal end of the fixing tool 193 so as to be matched with the teeth at a point where the teeth of the teeth 191a meet with the extension line of the center of the rotation shaft.

In addition, the present invention may be such that the shock absorber 180 and the neutral return device 170 is installed at one end of the power transmission member 120 as shown in FIGS.

Here, the shock absorber may be used as a spring, dustproof rubber, hydraulic device, etc., when the external force and shock is applied to the object, absorbs the kinetic energy to mitigate the vibration and shock applied to the object Refers to a device, in the present invention, a shock absorber 180 using a hydraulic cylinder is used to prevent a sudden acceleration operation of the foot pedal 110.

In this case, one end of the shock absorber 180 is hinged to the second rotary arm 123 extending vertically from one end of the power transmission member 120, and the other end is reciprocated in the hinge coupled to the vehicle body side. .

Here, the neutral return device 170 is installed in parallel with the shock absorber 180, the neutral return device 170 is a structure that maintains the position of the piston neutral by a pair of elastic members installed inside the cylinder Consists of

That is, when the foot pedal 110 is rotated in the forward or backward direction, one side elastic member of the neutral return device 170 is compressed by the piston, the external force applied to the foot pedal 110 and at the same time the elastic member The restoring force is exerted to restore the piston and the foot pedal 110 linked thereto to a neutral position.

The neutral return device 170 and the shock absorber 180 as described above may be installed at one end of the power transmission member 120 at the same time or divided into both ends.

6 is a conceptual diagram schematically illustrating an interlocking relationship between a foot pedal and a governor lever of the continuously variable control device according to the present invention. As shown in the figure, the foot pedal 110 is mechanically linked to the governor lever 117. In addition to the shift operation of the continuously variable transmission 200, the engine speed (RPM), that is, the output can be adjusted.

Referring to the mechanical linkage structure, the pedal wire 115 is connected to one end of the foot pedal 110, the pedal wire 115 is connected to the wire arm 116 to rotate the wire arm 116 To control. At this time, the other end rotation part of the wire arm 116 is coupled to the accelerator wire 118 that is interlocked by the governor lever 117, the accelerator wire 118 controls the fuel injection device 119 of the engine to output the engine To control.

At this time, the pedal wire 115 is made of a double structure of the cable outer shell (115a) and the core wire (115b), the outer shell (115a) of the plurality of levers that are linked to the foot pedal 110 as shown in FIG. One core (hatch hatched in the figure) may be interlocked, and the core wire 115b may be individually manipulated by another lever (the remaining unhatched lever) interlocked with the foot pedal 110.

In addition, the governor lever 117 is a device corresponding to an accelerator pedal of a vehicle, and is operated using a hand.

8 is a schematic view showing another embodiment of the foot pedal of the continuously variable control device according to the present invention, as shown in the same figure, the foot pedal 110 can be installed so that a pair of forward and backward pedals are separated and operated separately. have.

At this time, each pedal is to link the separate arm and the link to move the pedal wire 115 forward and backward.

Referring to the operation of the present invention having the above configuration as follows.

First, when the user rotates the foot pedal 110 in the forward or backward direction using the foot, the power transmission member 120 coupled with the shaft coupling portion 111 of the foot pedal 110 is rotated. .

The rotational force of the power transmission member 120 is transmitted through the first rotational arm 121, and the rotational force transmitted through the first rotational arm 121 causes the link 150 to linearly move.

At this time, the linear movement of the link 150 rotates the variable valve 160 of the continuously variable transmission 200. The variable valve 160 is capable of forward and reverse rotation and adjusts the supply hydraulic pressure by the amount of rotation.

In this case, the wire arm 116 is interlocked by the pedal wire 115 associated with the foot pedal 110, and the accelerator wire 118 connected to the wire arm 116 interlocks with the fuel injection device 119. The engine's power (RPM) is adjusted.

The driver may fix the position of the foot pedal 110 by operating the pedal lock 190 to continuously maintain a proper shift state.

The present invention, as the shift operation is made by the stepping pedal operation, there is a convenience that can perform other operations instead of using the hand shifting operation, familiar with the continuously variable transmission operation method by hand. There is a convenience that can be easily adapted to ordinary passengers who are not.

In addition, the present invention has the effect of eliminating the inconvenience of operating a separate engine RPM (speed) by shifting the governor lever acting as an accelerator pedal of a general passenger car in conjunction with the foot pedal.

The present invention has the effect that the work efficiency is significantly improved by replacing the use of hands necessary for the shift operation and the RPM operation by using a foot, thereby increasing the hand operation convenience of a work device such as a rice transplanter.

The present invention also provides a foot pedal, a pedal fixing device for fixing the foot pedal, and an interlock device for interlocking the governor lever and the governor lever to be installed on the opposite side of the hydrostatic stepless transmission, thereby eliminating spatial constraints. In addition, since the device is installed on the opposite side of the hydrostatic type, it is effective in terms of weight balance.

Claims (15)

delete delete delete delete delete A foot pedal rotated in the forward and backward directions by a user's foot manipulation; A power transmission member extending in the rotational axis direction of the foot pedal to transmit rotational force in the transverse direction of the gas; A shaft support portion configured to axially couple the power transmission member to the vehicle body in a rotatable state; A first rotating arm rotated in a state extending perpendicularly to an outer diameter of the power transmission member; A link in which a first end of the first rotary arm is pivotally connected and linearly moved; And A variable valve linked with a linear motion of the link to change a capacity of the hydraulic pump; Continuously variable speed operation apparatus for a passenger rice transplanter comprising a configuration comprising a. The method of claim 6, The foot pedal is mechanically linked to the governor lever and linked to operate, the stepless speed operation apparatus of the passenger rice transplanter, characterized in that the operation of the RPM (speed) operation of the engine is carried out at the same time. The method of claim 7, wherein The foot pedal is a continuously variable operation apparatus of the rice transplanter, characterized in that the operation state is maintained fixed by the pedal fixing device installed to enable the lock and release on one side of the rotation center. The method of claim 6, One side of the power transmission member is characterized in that the neutral return device for installing a shock absorber for preventing the rapid acceleration operation of the foot pedal and the pedal pedal to return to the neutral position when the pedal lock is unlocked at the same time is installed Continuously variable control. The method of claim 6, The power transmission member 120 is a continuously variable operation apparatus of a rice transplanter, characterized in that the rod-shaped bar is used. The method of claim 6, The power transmission member 120 is a continuously variable control apparatus for a rice transplanter, characterized in that the cable is used. The method of claim 6, The power transmission member 120 is a continuously variable operation apparatus of a rice transplanter, characterized in that the chain is used. The method of claim 6, The power transmission member 120 is a continuously variable operation apparatus of the rice transplanter, characterized in that the drive belt is used. The method of claim 6, The power transmission member 120 is a continuously variable operation apparatus of a rice transplanter, characterized in that the link coupling structure is used. The method of claim 6, The foot pedal is a continuously variable operation apparatus of the rice transplanter, characterized in that the pair of forward and reverse pedals are separated and installed to operate individually.

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