JPH0647080U - Power carrier - Google Patents

Abstract

(57) [Summary] [Purpose] The handle mounting structure can be simplified, a crawler traveling device suitable for traveling on rough terrain can be used, and the traveling device can be easily steered. [Structure] Left and right crawler traveling devices 1, 1, riding step 3, handle 4 having left and right grips 40, 40, and power transmission means for transmitting power from an engine 5a to the crawler traveling device. A power carrier, wherein the handle is provided so that it can be erected between an upper position for riding and a lower position for walking, and the power transmission means independently transmits power to the left and right crawler traveling devices. The left and right steering clutches 8, 8 that are intermittently connected are provided, and the left and right operation levers 8 that operate the left and right steering clutches.
0 and 80 are provided on the left and right grips of the handle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power carrier mainly used in places where rough terrain traveling is required, such as agricultural work.

[0002]

[Prior art]

 Conventionally, as a power carrier, a handle is provided at the rear of the vehicle body extending rearward, and the handle is provided at the upper position for riding, which is operated in a riding state on a riding step provided at the rear of the vehicle. There is known a device that can be erected from a boarding step to a lower position for walking which is operated in a walking state where the user gets off the boarding step.

Therefore, when the worker rides on the boarding step and drives, the steering wheel is positioned at the upper position for boarding, and when the worker gets off the boarding step and walks while driving, Since the handle can be positioned at the lower position for walking, the position of the handle can be switched according to the driving position of the worker.

[0004]

[Problems to be solved by the device]

 However, in the above-described conventional power carrier, the steering wheel is also used for steering the traveling device. That is, it has both a tilting structure that switches the steering wheel between the upper position for riding and the lower position for walking, and a steering structure that steers the direction of the traveling device to the left or right in conjunction with the lateral rotation of the steering wheel itself. There is. Therefore, there is a problem that the structure for attaching the steering wheel becomes complicated due to the combination of the tilting structure and the steering structure.

Further, since the steering wheel is steered by turning to the left and right, a force is required for its operation, and the steering wheel can be turned left or right while riding in a narrow boarding step, or can be moved left or right while walking. Since it is worn out, it is difficult to operate the handle, and there is a problem that operability and safety are poor.

Further, since the steering structure changes the direction of the traveling device by rotating the handle itself to the left and right, the traveling device can be applied only to the one using wheels. Therefore, it is difficult to apply this conventional handle structure to the crawler traveling device, so it is not suitable for rough terrain traveling necessary for agricultural work, and its application range is limited to road surface traveling. There was a problem.

The present invention has been made in view of the above problems, can simplify the handle mounting structure, can use a crawler traveling device suitable for traveling on rough terrain, and can drive the traveling device. It is an object of the present invention to provide a power carrier that can be easily steered.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the power carrier of the present invention has crawler traveling devices provided on the left and right sides of the vehicle body, riding steps provided on the rear portion of the vehicle body, and left and right grip portions. A power carrier having a handle extending rearward from a rear portion of a vehicle body, and a power transmitting means for transmitting power from an engine to the crawler traveling device, wherein the handle is provided on a riding step. The upper position for riding operated in the riding state and the lower position for walking operated in the walking state dismounted from the riding step, and the power transmission means are provided with left and right crawler traveling. There are left and right steering clutches that independently connect and disconnect the power transmission to the device, and the left and right operating levers that operate the left and right steering clutches are installed on the left and right grips of the handle. It is.

[0009]

[Action]

 In the power carrier of the present invention, the handle is provided so as to be able to be erected between the riding upper position and the walking lower position. Therefore, when the worker rides on the boarding step and drives, the handle is positioned at the upper position for riding, and when the worker gets off the boarding step and walks while driving, the handle Since it can be positioned at the lower position for walking, the position of the steering wheel can be switched according to the driving position of the worker.

Further, the power transmission means for transmitting the power from the engine to the crawler traveling device is provided with the left and right steering clutches for independently connecting and disconnecting the power transmission to the left and right crawler traveling devices, respectively. The left and right steering clutches are operated by the left and right operation levers provided on the left and right grips of the handle. For example, when the vehicle body is turned to the left, the left steering lever is used to disengage the left steering clutch to cut off power transmission to the left crawler traveling device, which stops the left crawler traveling device. However, since only the crawler traveling device on the right side travels, the vehicle body can be turned to the left.

Further, as described above, since the traveling device is steered by the disengagement of the steering clutch, a crawler traveling device suitable for traveling on rough terrain can be used as the traveling device.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a power carrier according to an embodiment. In this power carrier, crawler traveling devices 1 and 1 are provided on the left and right sides of a vehicle body, a loading platform 2 is provided above the crawler traveling devices 1 and 1, and a riding step 3 is provided at a rear portion of the vehicle body behind the loading platform 2. And a handle 4 having left and right grips 40, 40 is provided at the rear of the vehicle body so as to extend rearward.

Power is transmitted to the crawler traveling devices 1 and 1 from an engine 5a mounted on the rear portion of the vehicle body via a dynamic force transmitting means. In this power transmission means, a transmission belt 53 is provided between the engine pulley 50 provided on the engine 5a and the intermediate pulley 51a pivotally supported by the vehicle body frame 6 and between the intermediate pulley 51b and the transmission pulley 52 provided on the mission 5b. 54, and drive sprockets 56, 56 for driving the left and right output shafts 55, 55 of the mission 5b by engaging and driving the left and right crawler traveling devices 1, 1 are connected.

A traveling main clutch 7 is provided between the engine pulley 50 and the intermediate pulley 51a. As the traveling main clutch 7, a tension clutch that presses and separates from the transmission belt 53 in conjunction with the operation of the main clutch lever 70 provided on the handle 4 is used. That is, when the main clutch lever 70 is rotated upward, the traveling main clutch 7 is pressed against the transmission belt 53 and the transmission belt 53 is tensioned, so that power is transmitted from the engine pulley 50 to the intermediate pulley 51a. To be done. On the contrary, when the main clutch lever 70 is rotated downward, the traveling main clutch 7 is separated from the transmission belt 53, and the transmission belt 53 is loosened, so that the power transmission from the engine pulley 50 to the intermediate pulley 51a. Be refused.

Further, inside the mission 5b, left and right steering clutches 8 and 8 are provided, which independently connect and disconnect power transmission to the left and right crawler traveling devices 1 and 1, respectively. Claw clutches are used for the steering clutches 8 and 8.

Left and right operation levers 80, 80 for operating the left and right steering clutches 8, 8 are provided in the grip portions 40, 40 of the handle 4. Therefore, for example, when the left operating lever 80 is squeezed, the left steering clutch 8 is disengaged and the power transmission to the left crawler traveling device 1 is cut off, so that only the right crawler traveling device 1 is operated. The car will run and the car body will turn to the left.

The handle 4 includes an upper riding position (solid line position in FIG. 1) operated in a riding state on the riding step 3 and a lower walking position operated in a walking state alighted from the riding step 3. It is provided so that it can be tilted up and down with (the position of the phantom line in FIG. 1).

Next, the mounting structure of the handle 4 will be described with reference to FIGS. As shown in FIG. 2, the handlebar 4 has a bearing frame 41 fixed to the body frame 6 by extending in the left-right direction, and a bearing shaft 41 is rotatably inserted into the bearing pipe 41. The handle bars 4a, 4a are fixed, and grip portions 40, 40 are formed at the tips of the left and right handle bars 4a, 4a.

A horizontal shaft 44 is rotatably supported between the left and right handlebars 4a, 4a via brackets 43, 43, and one end of the arms 45, 45 is fixed to the horizontal shaft 44. A locking pin 46 is projected from the tip of the arm 45. On the other hand, as shown in FIGS. 3 and 4, a positioning plate 47 is fixed to the vehicle body frame 6, and a guide groove 48 having an upper locking groove 48a and a lower locking groove 48b is provided in the positioning plate 47. Has been formed.

The locking pin 46 is fitted into the guide groove 48, and the handle 4 is in the riding upper position (the position shown in FIG. 3) with the locking pin 46 engaged with the upper locking groove 48a. The handle 4 is positioned at the lower walking position (the position shown in FIG. 4) with the locking pin 46 engaged with the lower locking groove 48b. The engagement of the engagement pin 46 is switched by a lever 45a provided on the arm 45, and the engagement state of the engagement pin 46 with the engagement grooves 48a and 48b is held by a spring 49. It

Next, the operation of the embodiment will be described. First, the switching of the position of the handle 4 will be described. In the present embodiment, the handle 4 is selectively positioned between the riding upper position and the walking lower position by switching engagement between the upper locking groove 48a and the lower locking groove 48b of the locking pin 46. can do. Therefore, when the worker rides on the boarding step 3 and drives, the handle 4 is positioned in the riding upper position, and when the worker gets off the boarding step 3 and walks while driving, Since the handle 4 can be positioned at the lower position for walking, the position of the handle 4 can be switched according to the driving position of the worker.

Next, the traveling operation of the traveling device will be described. The power from the engine 5a is transmitted to the crawler traveling devices 1, 1 via the intermediate pulleys 51a, 51b and the mission 5b. At this time, when the main clutch lever 70 is turned upward with the left and right steering clutches 8, 8 being engaged, the traveling main clutch 7 is engaged, and the power from the engine 5a is transmitted to the crawler traveling devices 1, 1. The car body moves forward. When the main clutch lever 70 is rotated downward, the traveling main clutch 7 is disengaged, the power transmission from the engine 5a is cut off, and the vehicle body stops.

Next, the steering operation of the traveling device will be described. The left and right steering clutches 8, 8 which independently connect and disconnect the power transmission to the left and right crawler traveling devices 1, 1 are provided with left and right operation levers 80, 80 provided on the left and right grips 40, 40 of the handle 4. It is operated by. For example, when the vehicle body is turned to the left, the left operation lever 80 is used to disengage the left steering clutch 8 to cut off the power transmission to the left crawler traveling device 1. Since the device 1 is stopped and only the right crawler traveling device 1 travels, the vehicle body can be turned to the left.

As described above, since the traveling device is steered by connecting and disconnecting the steering clutches 8, 8, the crawler traveling device 1, 1 suitable for traveling on rough terrain can be used as the traveling device. .

Next, another example of the handle mounting structure will be described with reference to FIGS. 5 and 6. As shown in FIG. 5, the handle 4 extends in the left-right direction on the vehicle body frame 6, and a support shaft 90 is rotatably supported by bearings 91, 91. Dollar bars 4a, 4a are fixed.

As shown in FIG. 6, a disc 92 is fixed to the support shaft 90, and an upper engagement hole 92 a and a lower engagement hole 92 b are formed on the outer peripheral surface of the disc 92. On the other hand, a guide cylinder 93 is fixed to the body frame 6 above the disk 92, and a locking pin 93b having a knob 93a at the upper end is fitted in the guide cylinder 93. The locking pin 93b is biased downward by the spring 94. With the locking pin 93b engaged with the upper locking hole 92a, the handle 4 is positioned at the riding upper position (solid line position in FIG. 6), and the locking pin 93b is positioned in the lower locking hole 92b. In the engaged state, the handle 4 is positioned at the lower walking position (position indicated by phantom line in FIG. 6).

Next, another example of the handle mounting structure will be described with reference to FIG. The handle 4 has a bearing tube 95 fixed to the body frame 6 so as to extend in the left-right direction. A support shaft 96 is rotatably inserted into the bearing pipe 95. Bosses 97, 97 provided at the base ends of 4a, 4a are axially slidably supported by splines 96a, 96a.

A chrysanthemum seat 98 is formed between the flange 95 a of the bearing tube 95 and the flange 97 a of the boss 97, and a cam lever 99 is provided at one end of the support shaft 96. By axially sliding and fixing the seat 98 in the engaged state, the handle 4 is fixed at a predetermined position. In order to switch the position of the handle 4, the pressing of the cam lever 99 against the boss 97 is released, the chrysanthemum seat 98 is separated, and the handle 4 is tilted to a predetermined position in this state, and then, as described above. Then, the boss 97 is slid and fixed by the cam lever 99 so that the chrysanthemum seat 98 is engaged.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment.

[0030]

[Effect of device]

 As described above, in the power carrier of the present invention, since the handle is provided so as to be able to be erected between the riding upper position and the walking lower position, the handle is located at the driving position of the operator. The position of the handle can be switched accordingly.

Further, the steering of the crawler traveling device can be performed by the left and right operation levers provided on the steering wheel, instead of the conventional steering method of rotating the steering wheel left and right. Therefore, it is not necessary to combine the steering structure with the steering structure, the steering structure can be simplified, steering can be performed easily and safely, and the crawler traveling device suitable for running on rough terrain can be used. The effect is obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a power carrier according to an embodiment.

FIG. 2 is a plan view showing a mounting structure of a handle provided on the power carrier.

FIG. 3 is a side view showing a mounting structure of a handle provided on the power carrier.

FIG. 4 is a side view showing a mounting structure of a handle provided on the power carrier.

FIG. 5 is a plan view showing another example of the handle attachment structure.

FIG. 6 is a sectional view showing a mounting structure of the handle.

FIG. 7 is a plan view showing another example of a handle mounting structure.

[Explanation of symbols]

 1 Crawler traveling device 3 Riding step 4 Handle 40 Grip part 5a Engine 8 Steering clutch 80 Operating lever

Claims (1)

[Scope of utility model registration request] 1. A crawler traveling device provided on the left and right of the vehicle body, a riding step provided on the rear portion of the vehicle body, a handle having left and right grip portions, and extending rearward at the rear portion of the vehicle body. A power carrier having power transmission means for transmitting power from an engine to the crawler traveling device, wherein the handle is an upper position for riding which is operated in a riding state on a riding step, and a riding step The left and right steering wheels are provided so that they can be erected between the lower position for walking that is operated in the alighted walking state, and the power transmission means independently interrupts power transmission to the left and right crawler traveling devices, respectively. A power carrier, wherein a clutch is provided, and left and right operation levers for operating the left and right steering clutches are provided in the left and right grip portions of the handle.