JP2006249755A - Power transmission structure in snowplow - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To supply an efficient snowplow mainly used for securing a life road up to a main trunk road, and performing work by effectively using motive power of an engine by easily coping with this request due to frequently requiring to restrain a snow jetting distance by a condition of a work section along an alley having a building on the left and right, a work distance short section and a snow removing water passage, in a small snowplow. <P>SOLUTION: A transmission 60 capable of shifting without stopping rotation of a fan 43, is arranged between an output shaft 11 of the engine 10 and a fan transmission shaft 42 of a snow removing part 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a power transmission structure from a power source to a snow removal part in a snow remover having power used for snow removal work.

  Conventionally, in the power transmission of a snowplow with power used for snow removal work, a power source engine is installed in the traveling part to configure the power transmission path of the traveling part, while the snow on the road is crushed and scraped to the center. A snow removing part is arranged in front of the traveling part, and a rotor is arranged horizontally, a fan for ejecting snow is arranged at the rear center part of the rotor, and a rotor cover and a chute are arranged to form a snow flow path. In general, a structure in which the engine and the fan transmission shaft of the snow removal unit are linked and connected via a transmission tool is common.

As these known technologies: 1) The engine output shaft is mounted sideways, and a rotor is installed horizontally at the front of the crawler-type running section with a bevel case and PTO shaft in front of the engine. In the walking type snowplow equipped with a snow cover that is configured by arranging a rotor cover and a chute to form a flow path, the power transmission to the snow remover is transmitted between the engine output shaft and the bevel case. The shaft is connected by a belt transmission system, and the vertical axis that protrudes rearward from the bevel case and the PTO shaft are connected by the belt transmission system after meshing with the bevel gear, and the fan transmission that protrudes behind the PTO shaft and the snow removal part. There is a structure in which the shafts are interlocked and connected via a refractive transmission tool (for example, see Patent Document 1).

2) As another example, a rotor is installed horizontally at the front part of the crawler type traveling unit in which the output shaft of the engine is mounted in the longitudinal direction, and a fan is disposed behind the rotor, and a flow path is formed. In the walking type snow remover equipped with a snow removing part configured by arranging a rotor cover and a chute, the power transmission to the traveling part is made by connecting the output shaft of the engine and a rotating shaft for fixing the disc by a belt transmission system, Power is transmitted to the drive sprocket via a T-type friction plate type continuously variable transmission and gear speed reducer, and the power transmission to the snow removal part is a belt transmission system with an engine output shaft and a fan transmission shaft protruding behind the snow removal part. (See, for example, Patent Document 2).
Etc. are conventional techniques.

Japanese Utility Model Publication 1-138915 JP-A-10-68108

  In the prior arts 1) and 2), the transmission is not woven into the power transmission path from the engine to the snow removal section, and the rotational speed of the fan is proportional to only the rotational speed of the engine. If you want to reduce the snow squirting distance in snow removal work such as along alleys and structures along the snow drainage channel where there are buildings on the left and right, the only way is to make the snow that collides with the chute adjuster provided at the tip of the chute. There is a problem that power is not used effectively.

The problem to be solved by the present invention is as described above. Next, technical means for solving this problem will be described.
That is, in claim 1, in the snow remover in which a snow removing portion having a rotating rotor that is installed horizontally is disposed in front of a traveling portion having a power source, and the power source and the snow removing portion are interlocked and connected via a transmission tool. As a means, the power source 10 and the fan transmission shaft 42 of the snow removal unit 4 are linked together via the transmission 60.

  According to a second aspect of the present invention, a rotor for crushing snow on the road and scraping it to the center is disposed horizontally, a fan for ejecting snow is disposed at the rear center of the rotor, and a snow flow path is formed. In a snow remover in which a snow removing portion configured by arranging a rotor cover is arranged in front of a traveling portion equipped with an engine, a transmission 60 is provided between the output shaft 11 of the engine 10 and the fan transmission shaft 42 of the snow removing portion 4. Interlocking connection was used as a means.

  According to a third aspect of the present invention, the transmission 60 is used as a means capable of shifting without stopping the rotation of the fan 43. In the fourth aspect, the fan transmission of the output shaft 11 of the engine 10 and the snow removal section 4 is used. The speed change between the shafts 42 was used as a means of decelerating from the rotational speed of the fan 43 during standard work.

Since the present invention is configured as described above, the following effects can be obtained.
That is, as described in claim 1, by connecting the power source and the fan transmission shaft of the snow removal part through a transmission, the alley with buildings on the left and right, the section with a short working distance, and the snow drainage channel It is often necessary to reduce the snow squirt distance depending on the conditions of the workplace, such as work along the road, so it is easy to cope with it, and the engine speed of the engine is increased by reducing the rotational speed of the fan that requires large power, etc. It is possible to effectively use the power to increase the work efficiency, and to further facilitate the selection and arrangement of the engine arrangement and speed change means such as hydraulic speed change, belt speed change, and gear speed change.

  Further, as described in claim 2, by providing a transmission between the output shaft of the engine and the fan transmission shaft of the snow removal portion and interlockingly connecting the same, the alley and the working distance with buildings on the left and right are the same as described above. It is often necessary to reduce the snow squirt distance depending on the conditions of the workplace, such as work along a short section or snow drainage channel, so this can be handled easily, and the remaining power is reduced by reducing the rotational speed of fans that require large power. As the speed is increased, the power of the engine is effectively used to increase the work efficiency, and the transmission is arranged directly between the output shaft of the engine and the fan transmission shaft of the snow removal part without bypassing the power transmission path. The effect is simple and compact in structure.

  In addition, as described in claim 3, when the speed change device is capable of shifting without stopping the rotation of the fan, there are times when the snow discharge distance is suppressed depending on the conditions of the work place, and when it is necessary to spray away. Even if it occurs frequently, the fan is always rotated to cope with it, so that clogging of the chute can be prevented, and, similarly to the above, the engine power can be effectively used to increase the work efficiency.

  According to the fourth aspect of the present invention, the speed change between the engine output shaft and the fan transmission shaft of the snow removal portion is in a direction decelerating from the rotational speed of the fan shaft at the time of standard work. When the remaining engine speed is increased and the running speed is increased, and the amount of snow accumulation is small, the resistance of pushing the snow is reduced by the rotation of the rotor, so the engine does not drop even if the vehicle speed is increased. The snow removal work can be performed by using the snow remover in a dozer-like manner.

Next, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a plan view showing the configuration of a crawler type walking snow blower incorporating the present invention, FIG. 2 is also an overall side view, FIG. 3 is an overall view along arrow A, and FIG. 5 is a partial view of the essential part of the arrow B as well.

First, the overall configuration of a crawler type walking snow blower incorporating the present invention will be described with reference to FIGS. 1, 2, and 3.
The overall configuration of the walking type snowplow according to the embodiment is such that a traveling unit 1 having a mission case 12 that is arranged with a pair of crawlers 3 </ b> L and 3 </ b> R on the left and right and interlocked with the engine 10 is arranged in the center of the aircraft. In the rear part, an operation panel 50 in which an operation body group 6 of each function is arranged and a control part 5 composed of a handle 53 are arranged, and a rotor 47 is provided in front of the traveling part 1 and a fan 43 is arranged behind the rotor 47. The snow removing part 4 is arranged and the rotor cover 48 and the chute 49 are arranged so that the inclination and height of the snow removing part 4 can be adjusted with respect to the crawler grounding surface. It is composed.

  The traveling unit 1 fastens and fixes the engine 10 in the forward projecting direction to the upper part of a frame body 71 extending in the front-rear direction, and has steering clutch shafts 14 </ b> L and 14 </ b> R projecting left and right from the frame body 71. The transmission case 11 is fixed to the inner casing of the frame body 71, and the output shaft 11 and the transmission case 12 are interlocked and connected by a tension clutch type travel drive belt 18. The crawlers 3L and 3R are connected to the steering clutch shafts 14L and 14R. While connecting the side cases 35L and 35R to be arranged, a connecting body that connects the rear upper portion of the side cases 35L and 35R and the cylinder upper mounting body 73 that extends to the rear provided on the handle mounting body 72 fixed to the rear portion of the frame body 71 37, an electric lift cylinder 29 is installed, and as the lift cylinder 29 expands and contracts, the side view The frame body 71 with respect to the ground surface is a structure that determines the rotated steering clutch shaft 14L · 14R in the axial position.

  In addition, the operation unit 5 includes an operation panel 50 horizontally disposed on the rear upper surface of the traveling unit 1 and a left and right member 53 </ b> L that extends rearward in the vicinity of a part of both sides of the operation panel 50. 53R is smoothly connected to the lateral member 53a at the rear end portion and arranged in a handle 53 forming a U shape in plan view. The operation panel 50 of the embodiment includes an accelerator operating body 56, a speed change operation. A body 54, left and right steering operation bodies 55L and 55R, a chute operation body 51, a fan speed change operation body 68, a tilt adjustment switch 58 and a height adjustment switch body 59 of the snow removal section 4, and a deadman system for the handle 53 The traveling clutch operating body 52 and the snow removal clutch operating body 57 are provided.

  The snow removal part 4 is a flange-shaped bearing that is fastened and fixed to a plurality of mounting seats 48d, 48d,... Provided on a rear end surface of the fan cover 48b on a fan transmission shaft 42 that is located at the center and protrudes rearward and extends forward. The body 44 is arranged at the rear part and pivotally supported, the fan 43 is fixed to the middle part, and engaged with a reduction case 45 having an auger transmission shaft 45b protruding left and right at the tip part. On the other hand, the left and right rotors 47L and 47R are mounted on the rotor transmission shaft 45b, and the rotor cover 48 is fixed to the fan cover 48b on which the chute 49 is disposed, so that the snow of the rotating part is supported. It is the structure arrange | positioned so that a channel | path may be formed.

  Moreover, the structure which mounts the snow removal part 4 to the driving | running | working part 1 attaches the snow removal part attachment body 78 which contact | connects the rear surface of the bearing body 44, and fits on the outer periphery to the bearing body 44 so that rotation is possible, and also the snow removal part attachment body 78. Is fastened to the frame body 71, and a U-shaped fitting 48e provided on the outer periphery of the rear end of the fan cover 48b is connected to the arm 78b provided on the snow removing portion attachment body 78 by the electric rotating cylinder 24. In this structure, the inclination of the snow removal portion 4 with respect to the crawler ground contact surface is adjusted by the expansion and contraction of the rotating cylinder 24.

The power transmission between the output shaft 11 of the engine 10 incorporating the present case and the fan transmission shaft 42 of the snow removal unit 4 will be described in detail with reference to FIGS. 4 and 5.
In the power transmission structure between the output shaft 11 and the fan transmission shaft 42 of the embodiment, two transmission paths of a fan transmission belt 61 and a low speed transmission belt 62 configured by a belt tension clutch system are arranged, and switching of the transmission paths is performed by the fan. A switching device 7 that can be operated without stopping the rotation of 43 is provided in the operation system.

  In other words, the power transmission structure is such that the fan transmission belt 61 and the low-speed transmission belt 62 are loosely wound in parallel around the output shaft 11 and the fan transmission shaft 42, while the tension fulcrum shaft provided rearwardly projecting from the rear portion of the snow removal portion mounting body 78. A fan tension 63 and a low-speed tension 64 with a roller at the tip are attached to 65 so as to be turnable in the left-right direction, and both are placed at a turning position away from the belt by return springs 69 and 69. In addition, by operating the snow removal clutch operating body 57, one of the rollers is pressed against the belt to transmit a predetermined rotation to the fan 43.

  The structure of the operation system having the switching device 7 includes a crank 81L and a low-speed crank 81R that are pivotally supported along the surface outside the crank mounting plate 71b that is erected along the right side surface of the frame 71. A switching device in which one end of the crank 81L is connected to a fan tension 63 protruding from the right side surface of the frame 71 so as to be adjustable in length by a link arm 63c and a rod 82L, and the other end of the crank 81L is disposed in the vicinity of the control unit 5. The low-speed link arm 64c and the low-speed rod are fixedly connected to a low-speed tension 64 projecting from the right side surface of the frame 71. 82R is connected so that the length can be adjusted, and the other end of the low-speed crank 81R is connected at a low speed at a predetermined position of the connecting body 84 of the switching device 7. Swingably connected by head 83R.

  Next, the structure of the switching device 7 is such that a switching fulcrum seat 75 fixed to the handle mounting body 72 is provided with a fulcrum shaft 86b on one side and two pins 86c and 86c on the opposite side in a predetermined position. A fulcrum shaft 86b of the lever mounting body 86 is rotatably mounted, a fan speed change operating body 68 is fixed to the right end of the pins 86c and 86c, and the operation of the fan speed change operating body 68 is provided on the operation panel 50 in the front-rear direction. It is configured to move in the hook groove 50c (shown in FIG. 1) and maintain the engagement with the hook groove 50c at the front end or the rear end, while the rod support 75c provided at the rear portion of the switching fulcrum seat 75 has a clutch rod 85. It is inserted so as to be movable in the front-rear direction, and the connecting body 84 is engaged at a predetermined position so as to be rotatable at the front end, and the rear end is one end of a clutch spring 87 hung on an intermediate crank 88 interlocking with the snow removal clutch operating body 57. With a structure that is connected by multiplying That.

  The movement of the switching device 7 will be described. If the snow removal clutch operating body 57 is turned on when the fan speed change operating body 68 is rotated forward and engaged at the front end of the hooking groove 50c (the state shown in FIG. 4), the movement is changed. As a result, the clutch rod 85 is pulled backward by a predetermined amount, and the connecting body 84 is also moved by the same amount at the engagement position of the clutch rod 85. However, since the connecting body 84 contacts the pin 86c above the lever mounting body 86, the connecting body 84 is connected. The body 84 rotates and the lower part moves rearward greatly. Accordingly, the fan tension 63 connected to the connecting rod 83L is rotated to insert the fan transmission belt 61, and the power is transmitted from the output shaft 11 of the engine 10 to the fan transmission shaft 42. Can be done.

  Even if the fan speed change operating body 68 is rotated backward from the above state and operated to engage with the rear end of the latching groove 50c, the connecting body 84 is pushed and rotated by the pin 86c below the lever mounting body 86. Therefore, the fan tension 63 is moved to the cutting position by the return spring 69, and on the contrary, the low speed tension belt 64 connected to the connecting rod 83R is rotated to enter the low speed transmission belt 62, and the engine 10 The power transmission can be quickly switched from the output shaft to the fan transmission shaft 42.

  In this embodiment, the speed is changed between the output shaft 11 of the engine 10 and the fan transmission shaft 42 of the snow removal unit 4 by belt transmission in two paths. However, even if a belt type continuously variable transmission is incorporated in the meantime, the same effect is obtained. can get.

  Incorporating these effects, snow removal work frequently occurs when it is necessary to hold down the snow squirt distance due to the conditions of the workplace, the amount of snow, the snow quality, etc. However, it is uneconomical to respond by lowering the rotation speed of the engine, and changing the rotation speed of the fan makes it easy to operate and can fully demonstrate the capabilities of the machine. The possibility of adopting it to a small snowplow that does not have is great.

It is a top view which shows the structure of the crawler type walk-type snow remover incorporating the present invention. It is the whole whole side view. It is an A arrow whole view similarly. It is a principal part right side view similarly. It is a B arrow principal part fragmentary figure similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling part 4 Snow removal part 5 Control part 6 Control body group 7 Switching apparatus 18 Traveling transmission belt 48 Rotor cover 53 Handle 60 Transmission 61 Fan transmission belt 62 Low speed transmission belt 71 Frame body 72 Handle attachment body A arrow projection direction of figure Shows the projection direction of the figure

Claims (4)

  In a snow remover in which a snow removing unit having a rotating rotor that is installed horizontally is disposed in front of a traveling unit equipped with a power source, and the power source and the snow removing unit are linked to each other via a transmission device, the power source 10 and the snow removing unit 4 A power transmission structure in a snowplow, wherein the fan transmission shafts 42 are linked together via a transmission 60.   A rotor that crushes snow on the road and scrapes it to the center is arranged horizontally, a fan that ejects snow is arranged at the rear center of the rotor, and a rotor cover that forms a snow flow path is arranged. In a snow remover in which a snow removing portion is disposed in front of a traveling portion equipped with an engine, a speed change device 60 is provided between the output shaft 11 of the engine 10 and the fan transmission shaft 42 of the snow removing portion 4 to be interlocked with each other. Power transmission structure in a snowplow.   The power transmission structure in the snowplow according to claim 1 or 2, wherein the transmission (60) is capable of shifting without stopping the rotation of the fan (43). The speed change between the output shaft 11 of the engine 10 and the fan transmission shaft 42 of the snow removal section 4 is a direction decelerating from the rotational speed of the fan 43 at the time of standard work. Power transmission structure in a snowplow.

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