JP2010099868A - Firewood splitting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a firewood splitting machine which can suppress the inclination of a firewood splitting blade and prevent the deformation and breakage of the blade. <P>SOLUTION: In the fire wood splitting machine 1 having a firewood receiving part 3 contacting one side part of a firewood material, a firewood splitting cylinder 8 which fixes the firewood splitting blade 9 to a rod tip and drives the firewood splitting blade 9 to pressure-contact the opposite side part of the firewood material, and a guide mechanism guiding the firewood splitting blade 9, the guide mechanism is comprised of a guide rail part 11 extending in the stretch/contraction direction of the firewood splitting cylinder 8 and a slide plate 25 which is connected to the firewood splitting blade 9 and slides along the guide rail part 11. The slide plate 25 has an upward slide surface 27a which contacts the downward surface of the guide rail part 11 and limits the upward movement of the firewood splitting blade 9 and a downward slide surface 27b which contacts the upward surface of the guide rail part 11 and limits the downward movement of the firewood splitting blade 9. These slide surfaces 27a and 27b are formed to be longer than the size in the movement direction L of the firewood splitting blade 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a splitting machine, and more particularly to a splitting machine including a splitting cylinder for driving a splitting blade.

  Conventionally, in the wood splitting machine that performs the wood splitting work, for example, a cargo bed having wheels, a wood material placing portion provided on the cargo bed, a wood material suppressing portion provided on one side of the wood material placing portion, An apparatus including a hydraulic cylinder provided on the opposite side of the saddle member placing portion and a split blade provided at the rod tip of the hydraulic cylinder is disclosed (for example, see Patent Document 1). This wood splitter is equipped with a prime mover (for example, an engine or a motor), a hydraulic pump driven by this prime mover, and a switching valve that switches the flow of pressure oil from the hydraulic pump to the hydraulic cylinder according to the operation of the operation lever. ing. Then, the saddle material is placed in the contracted state of the hydraulic cylinder, and then the saddle material is split by extending the hydraulic cylinder.

  Further, in the splitting machine described in Patent Document 1, a pair of guide rail members extending in the extending and contracting direction of the hydraulic cylinder is provided, and the lower surfaces of the split blades are slidably contacted with the upper surfaces of these guide rail members. A casing penetrating between the members is suspended from the split blade, a pair of rollers is provided at the lower end of the casing, and these rollers are in contact with the lower surfaces of the pair of guide rail members. As a result, the split blade is guided to prevent the rod of the hydraulic cylinder from being bent during splitting.

Japanese Utility Model Publication No. 62-43705

However, the following problems exist in the above-described conventional technology.
That is, in the above-described prior art, since the lower surface of the split blade and the upper surface of the guide rail member are in sliding contact, a sufficient size is obtained for the sliding surface that restricts the downward movement of the split blade, Since the roller and the lower surface of the guide rail member are in line contact with each other, the sliding surface that restricts the upward movement of the split blade is not sufficiently large. Therefore, for example, when an upward bending moment is applied to the split blade by the pressing force of the split blade against the split material, the split blade may be inclined in the front-rear direction. More specifically, for example, as shown in FIG. 7 of Patent Document 1, when a casing is provided on the rear side of the split blade, an upward bending moment acts on the front portion of the split blade, so There was a possibility that the inclination of would occur. In addition, for example, when a casing is provided on the front side of the split blade, an upward bending moment may act on the rear portion of the split blade, which may cause a subsequent tilt. As a result, the wood splitting machine may be deformed or damaged.

  An object of the present invention is to provide a scissor that can suppress the inclination of the scissor blade and can prevent deformation and breakage.

  (1) In order to achieve the above-described object, the present invention has a rod receiving portion that contacts one side portion of the rod material, and a rod cutting blade at the tip of the rod, and the blade is pressed against the opposite side portion of the rod material. A splitting machine including a splitting cylinder that drives the splitting blade and a guide mechanism that guides the splitting blade, wherein the guide mechanism includes a guide rail portion that extends in an expansion / contraction direction of the splitting cylinder, and the splitting blade And a sliding portion that slides along the guide rail portion, the sliding portion contacting the guide rail portion and restricting the upward movement of the split blade. A moving surface and a sliding surface that contacts the guide rail portion and restricts the downward movement of the split blade, both of which are longer than the moving direction dimension of the split blade. Form.

  (2) In order to achieve the above-mentioned object, the present invention has a rod receiving portion that contacts one side portion of the rod material, and a rod cutting blade at the tip of the rod, and the blade is pressed against the opposite side portion of the rod material. A splitting machine including a splitting cylinder that drives the splitting blade and a guide mechanism that guides the splitting blade, wherein the guide mechanism includes a guide rail portion that extends in an expansion / contraction direction of the splitting cylinder, and the splitting blade And a slide plate that slides along the guide rail portion, and the slide plate abuts on a downward surface of the guide rail portion to restrict the upward movement of the split blade. An upward sliding surface, and a downward sliding surface that abuts the upward surface of the guide rail portion and restricts the downward movement of the split blade, both of the sliding surfaces of the split blade From moving direction dimensions Formed in Kunar so.

  According to the present invention, the sliding portion (for example, the slide plate) of the guide mechanism has both sliding surfaces that limit the upward and downward movement of the split blade longer than the size of the split blade in the moving direction. Since it forms, the inclination of the chopping blade can be suppressed. As a result, deformation and breakage of the wood splitter can be prevented.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing the overall structure of a wood splitting machine according to an embodiment of the present invention, and shows a state in which wood splitting work is possible. 2 is a top view seen from the direction of arrow II in FIG. 1, FIG. 3 is a front view seen from the direction of arrow III in FIG. 1, and FIG. 4 is seen from the direction of arrow IV in FIG. FIG. FIG. 5 is a cross-sectional view taken along a cross-section VV in FIG.

  1 to 5, the splitting machine 1 includes a mounting frame 2 on which a brazing material (not shown) is mounted, and one longitudinal side of the mounting frame 2 (left side in FIGS. 1 and 2). A hook receiving portion 3 that is fixed and abuts against one side (left side in FIGS. 1 and 2) of the hook material, a support base 4 provided on the lower side of the hook receiving portion 3, and a mounting frame 2 The cylinder frame 5 is slidably connected to the other side in the longitudinal direction (the right side in FIGS. 1 and 2), the axle 6 is rotatably provided below the cylinder frame 5, and the axle A wheel 7 provided at both ends, a double-acting splitting cylinder 8 fixed to the upper part of the cylinder frame 5, and a splitting blade 9 attached to the rod end of the splitting cylinder 8 are provided.

  The mounting frame 2 includes a square pipe 10 and a pair of angle members 12a and 12b joined to the square pipe 10 so as to form a guide rail portion 11 on the square pipe 10. The top surfaces of the angle members 12a and 12b constitute a saddle material placement surface on which the saddle material is placed.

  The eaves receiving portion 3 has an eaves plate 13 that is joined so that one end portion in the longitudinal direction of the mounting frame 2 penetrates and abuts against one side portion of the eaves material. The eaves plate 13 is, for example, a striped plate, and has a protrusion for preventing slipping on the surface of the eaves side (the right side in FIGS. 1 and 2). Further, on the side opposite to the brazing material in the gutter plate 13 (left side in FIGS. 1 and 2), it is arranged on both lateral sides of one end portion in the longitudinal direction of the mounting frame 2 and extends in the vertical direction. A pair of reinforcing square pipes 14 and an upper plate 15 spanning the upper ends (upper side in FIG. 1) of these square pipes 14 are provided. A handle 16 is provided between the square pipes 14 so as to be rotatable in the vertical direction. Then, for example, when the operator holds the handle 16 and lifts one side in the longitudinal direction of the wood splitter 1 and lifts the support base 4, the wood splitter 1 can be driven by the wheels 7.

  The cylinder frame 5 is composed of plate members 17a to 17d and the like so as to form a square pipe structure, and the other end portion in the longitudinal direction of the mounting frame 2 is inserted into the hollow portion. Thereby, the cylinder frame 5 is slidable with respect to the mounting frame 2. On the other side in the longitudinal direction of the mounting frame 2, for example, two pairs of through holes 18 that penetrate both side surfaces are formed. On the other hand, on one side in the longitudinal direction of the cylinder frame 5 (left side in FIGS. 1 and 2), there are two pairs of through holes 19 penetrating both side surfaces so as to correspond to the through holes 18 of the mounting frame 2, respectively. Is formed. Further, two pairs of through holes 20 penetrating both side surfaces are formed on the other side in the longitudinal direction of the cylinder frame 5 (right side in FIGS. 1 and 2) so as to correspond to the through holes 18 of the mounting frame 2. Has been. Then, for example, by inserting the fixing pin 21 into the through hole 18 of the mounting frame 2 and the through hole 19 (or 20) of the cylinder frame 5, the sliding position of the mounting frame 2 and the cylinder frame 5 is fixed. It is like that.

  For example, four support brackets 22 are provided on the upper portion of the cylinder frame 5, and the split cylinder 8 is fixed to the support brackets 22 via bolts. The cylinder for splitting 8 is arranged so that the tip of the rod expands and contracts toward the split plate 13, and the tip of the rod is shown with a split blade 9 (in this embodiment, a triangular prism-shaped vertical blade is shown as an example. For example, a cross blade or the like may be detachably attached. The splitting cylinder 8 is driven so as to press the splitting blade 9 against the side opposite side portion of the splitting material. Note that the blade edge of the blade 9 and the blade receiving plate 13 are not in contact with each other during the longest stroke of the blade cylinder 8. In addition, on one side in the longitudinal direction of the cylinder frame 5, for example, a pair of scissors for separating the scissors that have moved and adhered to the scissors blade 9 when the scissor cylinder 8 is shortened, from the scissors blade 9. A plate 23 is provided.

  Here, as the greatest feature of the present embodiment, a slide plate (horizontal plate) 25 is connected to the lower part of the split blade 9 via a vertical plate 24. The vertical plate 24 is inserted between the angle members 12a and 12b in the mounting frame 2 (and a notch 26 formed on one side in the longitudinal direction of the upper plate member 17a of the cylinder frame 5). The slide plate 25 is loosely fitted in a slide groove formed between the angle members 12a and 12b and the square pipe 10, and slides upward in contact with the upper plate inner surface (downward surface) of the angle members 12a and 12b. The surface 27a and a downward sliding surface 27b that abuts on the outer surface (upward surface) of the upper plate of the square pipe, and both the sliding surfaces 27a and 27b are longer than the moving direction dimension L of the split blade 9. Is formed. The sliding plate 25 slides along the guide rail portion 11 extending in the expansion / contraction direction of the splitting cylinder 8 to guide the splitting blade 9 (guide mechanism).

  In the present embodiment configured as described above, the slide plate 25 has sliding surfaces 27a and 27b for restricting the upward and downward movements of the split blade 9 from the moving direction dimension L of the split blade 9, respectively. Since it forms so that it may become long, the inclination of the chopping blade 9 can be suppressed. As a result, deformation and breakage of the wood splitter 1 can be prevented.

  Further, as another feature of the present embodiment, the split cylinder 8 has pipe joints 28a and 28b connected to, for example, the rod side oil chamber and the bottom side oil chamber, respectively, and other work machines (for example, mini loaders). Etc.) and is connected to and driven by hydraulic hoses 29a, 29b and the like. Details will be described below with reference to FIGS.

  FIG. 6 is a side view showing the entire structure of the mini loader, and FIG. 7 is a top view. Hereinafter, the front side (left side in FIGS. 6 and 7), the rear side (right side in FIGS. 6 and 7), and the left side (front side toward the paper surface in FIG. 7) and the right side (back side toward the paper surface in FIG. 6, upper side in FIG. 7) are simply referred to as front side, rear side, left side, and right side.

  6 and 7, the mini loader 100 includes a vehicle body frame 101, a traveling device 102 provided at a lower portion of the vehicle body frame 101, a power unit 103 provided on the rear side of the vehicle body frame 101, and the power unit 103. A driver's seat (seat) 104 provided in the upper part, a work implement support frame 105 and an operation unit frame 106 provided on the front side of the body frame 101, and the work implement support frame 105 can be turned up and down (can be raised and lowered). And a working machine 107 provided. The operation unit frame 106 includes an HST input lever 108 that can be manually operated in the front-rear direction, a travel lever 109 that can be manually operated in the front-rear direction, a left turning lever 110L and a right turning lever 110R that can be manually operated in the front-rear direction. A cross operation type work machine operation lever 111 that can be manually operated in the front-rear direction and the left-right direction, and an option operation lever 112 that can be manually operated in the front-rear direction are provided.

  The travel device 102 includes left and right drive wheels (sprockets) 113 disposed on the left and right sides of the body frame 101, left and right first driven wheels 114 rotatably supported on the left and right sides of the body frame 101, The left and right second driven wheels 115 rotatably supported below the driving wheel 113, and the left and right driven wheels wound around three driving wheels including the driving wheel 113, the first driven wheel 114, and the second driven wheel 115, respectively. An endless track crawler (crawler) 116, which is positioned between the first driven wheel 114 and the second driven wheel 115, is rotatably supported and supports, for example, three rolling wheels 117 respectively supporting the grounding portion of the shoe 116. It has.

  The work machine 107 includes a lift arm 118 connected to the work machine support frame 105 so as to be rotatable in the vertical direction, and a bucket 119 (work tool) connected to the tip of the lift arm 118 so as to be rotatable in the vertical direction. And.

  The lift arm 118 is integrally composed of a pair of left and right arm frames 120 and connecting members 121 and 122 connected between the left and right arm frames 120. The upper end side of a double-acting lift arm cylinder 123 is rotatably connected to the rear side connecting member 121 of the lift arm 118, and the lower end side of the lift arm cylinder 123 is rotatable to the work implement support frame 105. It is connected to the. The lift arm 118 moves up and down in accordance with the expansion and contraction drive of the lift arm cylinder 123.

  Further, an intermediate portion of the bell crank 124 (link main body) is rotatably supported by the front side connecting member 122 of the lift arm 118. A connection bar (not shown) is rotatably connected to one side (lower side in FIG. 1) of the bell crank 124, and a tip end portion of the connection bar is rotatably connected to the bucket 119. The other end of the bell crank 124 (upper side in FIG. 1) is connected to the front end side of the double-acting bucket cylinder 125 so as to be rotatable, and the rear end side of the bucket cylinder 125 is rotatable to the work implement support frame 105. It is connected to the. The inclination angle of the bucket 119 with respect to the lift arm 118 changes (becomes up and down) according to the expansion and contraction drive of the bucket cylinder 125.

  The work machine 107 is provided with an optional piping group 126 (specifically, optional hydraulic piping 126a and 126b connected to an optional control valve, which will be described later, and a drain piping connected to a hydraulic oil tank). Has been.

  FIG. 8 is a hydraulic circuit diagram showing the configuration of the power unit 103.

  In FIG. 8, a power unit 103 includes an engine 127 as a prime mover, a hydraulic continuously variable transmission (HST) 128 and a gear mechanism (not shown) for transmitting the power of the engine 127 to the left and right drive wheels 113. It has. Although not shown in detail, the hydraulic continuously variable transmission 129 constitutes a variable displacement travel hydraulic pump connected to the output shaft of the engine 127 via a main clutch mechanism, and a closed circuit with the travel hydraulic pump. And a hydraulic motor that is driven by the discharged pressure oil. The gear mechanism distributes the power of the hydraulic motor to two while decelerating at a predetermined reduction ratio, and transmits the distributed power to the left and right drive wheels 113 via the left and right clutch mechanisms.

  In accordance with the operation of the HST input lever 108, the main clutch mechanism is switched to the connected position or the disconnected position, and the traveling hydraulic pump of the hydraulic transmission 128 is driven or stopped. Further, in accordance with the operation of the travel lever 109, a swash plate adjustment mechanism (not shown) adjusts the tilt angle of the swash plate of the travel hydraulic pump so as to control the forward and backward travel and speed of the travel device 102. It has become. Further, the left or right clutch mechanism is switched to the disengagement position in accordance with the operation of the left turning lever 110L or the turning lever 110R, and the vehicle is caused to turn left or right.

  Further, the power unit 103 is configured to flow the hydraulic oil flow from the working machine hydraulic pump 129 and the optional hydraulic pump 130 driven by the engine 127 to the lift arm cylinder 123 and the bucket cylinder 125 from the working machine hydraulic pump 129, respectively. The lift arm control valve 131 and the bucket control valve 132 to be controlled, and an option for controlling the flow of pressure oil from the optional hydraulic pump 130 to the optional actuator (in this embodiment, the split cylinder 8 of the splitting machine 1). Control valve 133.

  The lift arm control valve 131 is switched according to the operation of the work implement operation lever 111 in the front-rear direction, and the lift arm cylinder 123 is extended or contracted, and the lift arm 118 is raised or lowered. Yes. Further, the bucket control valve 132 is switched in accordance with the operation in the left-right direction of the work implement operation lever 111 to extend or contract the bucket cylinder 125 so that the opening of the bucket 119 is directed upward or downward. It has become. Further, for example, when the split cylinder 8 of the splitting machine 1 is connected to the optional hydraulic pipes 126a and 126b via the hydraulic hoses 29a and 29b, the option control is performed according to the operation of the option option operating lever 112. The valve 134 is switched to extend or shorten the split cylinder 8.

  Returning to FIG. 1 to FIG. 5 described above, the scissor splitting machine 1 is provided with, for example, a U-shaped connecting fitting 29 (connecting member) capable of connecting the scissor receiving part 3 and the scissor cutting blade 9. An engagement hole 31 is formed in the upper plate portion 30 of the split blade 9 at the center in the width direction (in other words, the position corresponding to the rod of the split cylinder 8). An engagement hole 32a is formed in the upper plate 15 of the flange contact portion 3 at the same position in the width direction as the engagement hole 31 of the split blade 9, and a predetermined distance from the engagement hole 32a (specifically, the connecting fitting 29). The engagement hole 32b is formed so as to be separated by a distance between the one end and the other end. Then, as shown in the above-described FIG. 2 and the like, when the hook receiving portion 3 and the split blade 9 are not connected, while inserting one end of the connecting metal fitting 29 into the engagement hole 32a of the hook receiving portion 3, The other end is inserted into the engagement hole 32b. On the other hand, as shown in FIG. 9 and the like which will be described later, when connecting the scissor receiving portion 3 and the scissor blade 9, the one end portion of the connecting metal fitting 29 is inserted into the engagement hole 32 a of the scissor receiving portion 3 while the other The side end is inserted into the engagement hole 31 of the split blade 9.

  The storing operation of the wood splitter 1 configured as described above will be described with reference to FIGS.

  For example, in order to reduce the longitudinal dimension of the wood splitter 1 in order to carry the wood splitter 1 with the bucket 119 of the mini loader 100, first, the operator operates the option operating lever 112 of the mini loader 100 to set the wood cylinder 8 for splitting. Elongate and bring the split blade 9 closer to the split plate 13 (see FIG. 9). Then, the connecting metal fitting 30 is lifted to remove the other side end portion from the engagement hole 33b of the flange receiving portion 3 and rotate around the one end portion that is still inserted into the engagement hole 33a of the flange receiving portion 3. The other end is inserted into the engagement hole 32 of the split blade 9. Thereby, the scissor receiving part 3 and the scissors cutting blade 9 connect (refer FIG. 9). Then, the fixing pin 21 inserted through the through hole 18 of the mounting frame 2 and the through hole 19 of the cylinder frame 5 is removed, so that the mounting frame 2 and the cylinder frame 5 can slide. 10). Thereafter, the option operating lever 112 of the mini loader 100 is operated to shorten the split cylinder 9. At this time, the cylinder frame 5 slides with respect to the mounting frame 2 by the driving force of the splitting cylinder 9, and the longitudinal dimension of the splitting machine 1 is reduced. Then, the fixing pin 21 is inserted into the through hole 18 of the mounting frame 2 and the through hole 20 of the cylinder frame 5 to fix the sliding position of the mounting frame 2 and the cylinder frame 5 (see FIG. 11). Thus, the longitudinal dimension of the wood splitter 1 can be reduced, and the wood splitter 1 can be carried on the bucket 119 of the mini loader 100 (see FIG. 12).

It is a side view showing the whole structure of the wood splitter in one Embodiment of this invention, and shows the expansion | extension state of a wood splitter. FIG. 2 is a top view of the wood splitter viewed from the direction of arrow II in FIG. FIG. 3 is a front view of the wood splitter seen from the direction of arrow III in FIG. FIG. 4 is a rear view of the wood splitter viewed from the direction of arrow IV in FIG. 1. It is sectional drawing in the cross section VV in FIG. It is a side view showing the whole miniloader structure in one embodiment of the present invention. It is a top view showing the whole miniloader structure in one embodiment of the present invention. It is a circuit diagram showing the cylinder for splitting of a wood splitting machine with the hydraulic drive device of the mini loader in one Embodiment of this invention. It is a top view for demonstrating the accommodation operation | movement of the wood splitter in one Embodiment of this invention. It is a side view for demonstrating the accommodation operation | movement of the wood splitter in one Embodiment of this invention. It is a side view for demonstrating the accommodation operation | movement of the wood splitter in one Embodiment of this invention, and shows the shortened state of the wood splitter. It is a top view for demonstrating the accommodation operation | movement of the wood splitter in one Embodiment of this invention, and shows the state which stored the wood splitter in the bucket of the mini loader.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Splitting machine 3 Splitting part 8 Splitting cylinder 9 Splitting blade 11 Guide rail part 25 Slide plate (sliding part)
27a Sliding surface 27b Sliding surface

Claims (2)

A rod receiving portion that comes into contact with one side portion of the rod material, a rod for cutting that has a blade at the end of the rod, and that drives the blade to press against the opposite portion of the rod, and guides the blade In a wood splitter equipped with a guide mechanism
The guide mechanism is composed of a guide rail portion extending in the expansion / contraction direction of the splitting cylinder and a sliding portion that is provided on the split blade and slides along the guide rail portion,
The sliding portion is in contact with the guide rail portion and restricts upward movement of the split blade, and the sliding portion is in contact with the guide rail portion and restricts downward movement of the split blade. And a sliding surface that is formed so that both of the sliding surfaces are longer than the dimension in the moving direction of the split blade. A rod receiving portion that comes into contact with one side portion of the rod material, a rod for cutting that has a blade at the end of the rod, and that drives the blade to press against the opposite portion of the rod, and guides the blade In a wood splitter equipped with a guide mechanism
The guide mechanism is composed of a guide rail portion extending in the expansion / contraction direction of the splitting cylinder, and a slide plate that is connected to the split blade and slides along the guide rail portion,
The slide plate is in contact with the downward surface of the guide rail portion to restrict the upward movement of the split blade, and the slide plate is in contact with the upward surface of the guide rail portion of the split blade. A splitting machine having a downward sliding surface for restricting the downward movement, and both sliding surfaces are formed to be longer than the dimension of the split blade in the moving direction.

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