JP2014152485A - Hand guide roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand guide roller capable of improving an operator's work environment.SOLUTION: A hand guide roller includes: a traveling machine body 1 that comprises at least an engine 13 and an exhaust pipe 14; rollers 2 and 2 that are attached to the traveling machine body 1; an operation rod 3 that is elongated backward from the rear of the traveling machine body 1; a frame-like wall member 4 that covers front and rear parts and both side parts of the traveling machine body 1; and a hood 5 that covers an upper part of the frame-like wall member 4. Air is exhausted from the front side of the traveling machine body 1 or the frame-like wall member 4.

Description

  The present invention relates to a hand guide roller for compacting a paving body or the like.

  As a hand guide roller which compacts a paving body etc., the thing of patent documents 1 is mentioned, for example. FIG. 6 is a side view showing a conventional hand guide roller. As shown in FIG. 6, a conventional hand guide roller 100 includes a traveling machine body 101 having an engine E and an exhaust pipe D, a pair of rollers 102 attached to the traveling machine body 101, and a rearward extension from the traveling machine body 102. The operation rod 103 and a box-shaped housing 104 that covers the front and rear, side, and top of the traveling machine body 101 are configured. The exhaust port Da of the exhaust pipe D is exposed at the upper part of the housing 104. That is, the exhaust discharged from the engine E is discharged from the upper part of the housing 104 to the outside.

JP 2012-241390 A

  The conventional hand guide roller 100 shields the engine sound by covering the front and rear, both sides, and the upper part of the traveling machine body 101 with the housing 104, but the engine sound inevitably leaks to the outside through the exhaust pipe D. There is a problem. When exhausting from the upper part of the housing 104 as in the conventional hand guide roller 100, the distance between the exhaust port Da and the operator is close and close to the height of the operator's ear, and noise is generated for the operator. growing.

  Usually, a muffler is provided on the base end side of the exhaust pipe D. However, in order to obtain a sufficient silencing effect, it is necessary to install a large muffler. However, in a limited space of the traveling machine body 101, it is difficult to attach a large muffler that can provide a sufficient silencing effect. Further, there is a problem that the operator can easily suck the exhaust gas depending on the wind direction.

  The present invention has been created to solve such problems, and an object of the present invention is to provide a hand guide roller capable of improving an operator's working environment.

  In order to solve the above problems, the present invention provides a traveling machine body including at least an engine and an exhaust pipe, a roller attached to the traveling machine body, an operating rod extending rearward from a rear portion of the traveling machine body, and the traveling A frame-like wall member that covers the front and rear portions and both sides of the airframe, and a hood that covers an upper portion of the frame-like wall member, and is configured to exhaust from the front side of the traveling airframe or the frame-like wall member. It is characterized by being.

  According to such a configuration, since the exhaust can be performed from the front side of the hand guide roller, the distance between the operator and the exhaust port can be made larger than before, and the direction of the exhaust port is set to the front on the front side of the hand guide roller. can do. This makes it easier for the exhaust to diffuse before it reaches the operator. Further, since the sound is transmitted not around the hand but around the hand guide roller, the amount of attenuation of the sound becomes larger than in the prior art, and the sound volume reaching the operator can be reduced. Therefore, the operator's work environment can be improved.

  The exhaust pipe includes a rising portion extending upward, a rising portion spaced apart from the rising portion and extending downward, the rising portion and the falling portion It is preferable that at least a folded portion that is connected to each other and folded in the vertical direction and an extending portion that extends from the other end portion of the falling portion toward the front side are provided.

  According to this configuration, rainwater does not go up the exhaust pipe during wind and rain, and rainwater can be prevented from flowing into the engine even when the engine of the hand guide roller is stopped.

  The hood is provided with a hood main body and a dome-shaped protruding portion protruding upward from a part of the hood main body, and the folded portion is disposed in the vicinity of the protruding portion. preferable.

  It is known that even a lightweight membrane member or plate member that has almost no sound insulation and sound absorption effect in a planar shape can be made into a sound insulation and sound absorption structure by fixing its periphery as a dome-shaped curvature shape. It has been. If a part of the hood is projected to form a dome shape, the hood body around it is regarded as a fixed part. When the hood is closed. If the folded portion of the exhaust pipe is disposed in the vicinity of the dome-shaped protrusion, the noise generated from the surface of the exhaust pipe can be sound-insulated and absorbed by the dome-shaped protrusion, thereby reducing the noise.

  Moreover, it is preferable that at least one of the hood main body and the protruding portion includes a lower layer portion, an upper layer portion, and an air layer portion formed between the lower layer portion and the upper layer portion.

  According to such a configuration, by providing the air layer inside the hood, the sound insulation / sound absorption effect can be further enhanced, and an increase in temperature related to the upper surface of the hood can be suppressed by the heat insulation effect.

  Moreover, it is preferable that the rib which connects the said lower layer part and the said upper layer part is formed.

  According to such a configuration, the strength and rigidity of the hood can be improved.

  According to the hand guide roller of the present invention, the operator's working environment can be improved.

1 is an overall perspective view of a hand guide roller according to an embodiment of the present invention. It is a schematic side view which shows the internal structure of the hand guide roller which concerns on this embodiment. It is a top view of the hand guide roller concerning this embodiment. It is a bottom view of the hood which concerns on this embodiment. 4A is a sectional view taken along the line II in FIG. 4, FIG. 4B is a sectional view taken along the line II-II in FIG. 4, and FIG. 4C is a sectional view taken along the line III-III in FIG. It is a side view which shows the conventional hand guide roller.

  Embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the hand guide roller H according to the present embodiment is a machine that compacts a paving body and the like. The hand guide roller H mainly includes a traveling machine body 1, rollers 2 and 2, an operation rod 3, a frame-like wall member 4, and a hood 5. In the description, “up and down”, “left and right”, and “front and back” follow the arrows in FIG.

  As shown in FIGS. 1 and 2, the traveling machine body 1 includes a support plate 11, side frames 12, 12, an engine 13, an exhaust pipe 14, a suspension hook 15, a battery BT, a fuel tank FT, The hydraulic oil tank WT, a hydraulic pump, an accompanying member, etc. are comprised. The support plate 11 is a metal plate-like member, and each device and the frame-like wall member 4 constituting the traveling machine body 1 are installed. The side frames 12 are plate-like members installed on the left and right sides of the support plate 11.

  The engine 13 is a device that serves as a travel drive source. The exhaust pipe 14 is a pipe that exhausts exhaust discharged from the engine 13 to the outside. The exhaust pipe 14 includes a rising portion 14a, a folded portion 14b, a falling portion 14c, and an extending portion 14d. The rising portion 14a may be a simple cylindrical tube, but in the present embodiment, a muffler having a silencing effect is used. Cylindrical tubes having the same outer diameter are used for the folded portion 14b, the falling portion 14c, and the extending portion 14d. The rising portion 14a has a larger outer diameter than the folded portion 14b.

  The rising part 14a and the falling part 14c are extended in the vertical direction, and are arranged at intervals. The folded portion 14b is provided so as to be bent in the vertical direction and is a portion that connects the upper end of the rising portion 14a and the upper end of the falling portion 14c. The falling portion 14c is fixed to an internal wall L1 erected on the traveling machine body 1 via brackets M and M. In addition, in this embodiment, although the raising part 14a and the falling part 14c were provided in parallel with the perpendicular direction, you may incline with respect to a perpendicular direction.

  The extending portion 14 d extends from the lower end of the falling portion 14 c to the front side of the traveling machine body 1. The extending portion 14d is slightly inclined downward toward the outside of the traveling machine body 1. Moreover, as shown in FIG. 3, the extending part 14d is extended toward the right front side. As shown in FIG. 2, the distal end side of the extending portion 14 d passes through the front plate 16 attached to the traveling machine body 1. In order to avoid the inflow of rainwater, the exhaust port 14e is preferably opened forward, sideward or downward.

  As shown in FIG. 2, the hanging hook 15 is firmly fixed to the support plate 11. The hanging hook 15 is a hook used when the hand guide roller H is lifted or hung by a crane or the like.

  The roller 2 is a cylindrical iron ring that is in contact with a pavement or the like. In the present embodiment, two rollers 2 are provided at the front and rear with a space therebetween, and are arranged so as to be parallel to each other. The roller 2 rotates forward and backward as the engine 13 is driven. In addition, you may comprise so that the roller 2 may vibrate.

  The operating rod 3 is a device for operating the hand guide roller H. The operating rod 3 extends from the rear part of the traveling machine body 1 toward the rear. The operation rod 3 is provided with an operation member such as a lever.

  As shown in FIG. 1, the frame-like wall member 4 is a frame-like member that covers the front side, the left side, the right side, and the rear side of the traveling machine body 1. In this embodiment, the frame-like wall member 4 is composed of a front cover 21, side covers 22 and 22, and a water tank 23.

  The front cover 21 is a metal plate-like member and is erected on the front end of the support plate 11. The front cover 21 is slightly inclined to the rear side. The lateral covers 22, 22 are metal plate-like members, and are provided perpendicular to the support plate 11 at the left and right ends of the support plate 11. The height of the front cover 21 is lower than that of the lateral cover 22. The heights of the side covers 22 and 22 are the same.

  The water tank 23 is a hollow container for storing water sprayed on the peripheral surface of the roller 2. The water tank 23 constitutes a part of the frame-shaped wall member 4 as a member that covers the rear side of the traveling machine body 1. The length of the water tank 23 in the left-right direction is substantially equal to the distance between the side covers 22 and 22. Further, the height of the water tank 23 is substantially equal to the height of the lateral cover 22. The engine 13, the exhaust pipe 14, and the like of the traveling machine body 1 are covered with a frame-like wall member 4 including a front cover 21, side covers 22, 22 and a water tank 23.

  On the front wall of the water tank 23, an overhang portion 23a is formed that projects forward. A storage pocket PO is formed in a space surrounded by the front wall of the water tank 23, the overhang portion 23a, and the inner wall L2. The storage pocket PO can store materials such as instruction manuals.

  As shown in FIG. 1, the hood 5 is a resin plate-like member that covers the upper portion of the frame-like wall member 4. In the present embodiment, the hood 5 includes a hood main body 31, a protruding portion 32, and a handle 33.

  As shown in FIGS. 4 and 5A to 5C, the hood body 31 includes a lower layer portion 41, an upper layer portion 42 that is separated from the lower layer portion 41, and a lower layer portion 41 and an upper layer portion 42. The formed air layer portion 43, the long hole 37, and the attachment portion 38 are configured. The hood body 31 has a two-layer structure and is hollow inside.

  The long hole 37 penetrates in the vertical direction at the center in the left-right direction of the hood body 31. The long hole 37 is formed along the front-rear direction. The suspension hook 15 is inserted through the long hole 37 (see FIG. 1). The attachment portion 38 is formed behind the long hole 37 and penetrates in the vertical direction. The attachment part 38 is a part to which the handle 33 is attached.

  Further, as shown in FIG. 4, on the back side of the hood body 31, a pair of first recesses 51, a pair of second recesses 52, a pair of third recesses 53, a pair of side grooves 54, and a rear part A groove 55 is formed. The 1st recessed part 51, the 2nd recessed part 52, and the 3rd recessed part 53 are formed on the straight line extended in the front-back direction.

  The first recess 51 extends along the front-rear direction on both the left and right sides of the long hole 37. The 1st recessed part 51 exhibits planar view oblong shape. As shown to (a) of FIG. 5, the 1st recessed part 51 is comprised by a pair of rib 51a, 51a which connects the lower layer part 41 and the upper layer part 42, and has a cross-sectional substantially triangular shape.

  As shown in FIG. 4, the second recess 52 extends along the left-right direction on both the left and right sides of the rear side of the protrusion 32. The 2nd recessed part 52 exhibits planar view oblong shape. As shown in FIG. 5B, the second recess 52 is composed of ribs 52a and 52a that connect the lower layer portion 41 and the upper layer portion 42 and a bottom portion 52b, and has a substantially trapezoidal cross section.

  As shown in FIG. 4, the third recesses 53 are formed on the left and right sides on the front side of the protrusion 32. The third recess 53 has a circular shape in plan view. As shown in FIG. 5B, the third recess 53 is configured by ribs 53a and 53a and a bottom 53b that connect the lower layer portion 41 and the upper layer portion 42, and has a substantially trapezoidal cross section.

  As shown in FIG. 4 and FIG. 5A, the side grooves 54 extend along the front-rear direction at the left and right ends on the back side of the hood body 31. The side groove 54 is a portion into which the tip of the lateral cover 22 enters.

  The rear groove 55 extends along the left-right direction at the rear end of the back side of the hood main body 31 as shown in FIG. 4 and FIG. The rear groove 55 is a part into which the upper end of the water tank 23 enters.

  Further, as shown in FIG. 5B, a connection plate 56 is formed at the front end on the back side of the hood body 31. The connection plate 56 is formed perpendicular to the hood body 31. As shown in FIG. 2, the connection plate 56 is connected via a bracket 57 to a shaft portion 17 extending in the left-right direction on the front side of the traveling machine body 1.

  Thereby, the hood 5 can be rotated around the shaft portion 17 by the hinge mechanism. The operator can open and close the hood 5 by grasping the handle 33 and lifting or lowering it. The rear portion of the hood 5 is in contact with the buffer member N. The buffer member N is provided at the upper end of the inner wall L <b> 2 formed at the rear portion of the traveling machine body 1. By providing the buffer member N, it is possible to absorb the impact between the traveling machine body 1 and the hood 5 when the hood 5 is closed.

  As shown in FIG. 2, the rear side of the hood main body 31 (the portion on the rear side of the protruding portion 32) is slightly inclined so as to become lower toward the front side. Further, as shown in FIG. 5B, the front side of the hood main body 31 is formed of a curved surface that decreases toward the front. The front end of the hood body 31 is abutted against the upper end of the front cover 21.

  As shown in FIG. 1, the protrusion 32 is formed at the center in the left-right direction on the front side of the hood body 31. The protrusion 32 is formed in a dome shape so as to protrude upward from the hood body 31 in a part of the hood body 31. As shown in FIG. 5C, a hollow portion 32 a for allowing the folded portion 14 b of the exhaust pipe 14 to escape is formed inside the protruding portion 32. Although the folding | returning part 14b should just be arrange | positioned in the vicinity of the protrusion part 32, it is preferable to be arrange | positioned inside the hollow part 32a like this embodiment. The protrusion 32 is formed integrally with the hood body 31 in this embodiment. The protruding portion 32 also includes a lower layer portion 41, an upper layer portion 42, and an air layer portion 43.

  Although the method for forming the hood 5 is not particularly limited, in the present embodiment, the hood main body 31, the protruding portion 32, and the connection plate 56 are integrally formed by rotational molding.

  According to the hand guide roller H according to the present embodiment formed as described above, the air can be exhausted from the front side of the hand guide roller H, so that the distance between the operator and the exhaust port 14e can be made larger than before. At the same time, on the front side of the hand guide roller H, the direction of the exhaust port 14e is forward. This makes it easier for the exhaust to diffuse before it reaches the operator. Further, since the sound is transmitted so as to wrap around the hand guide roller H, the amount of attenuation of the sound becomes larger than before, and the sound volume reaching the operator can be reduced. Therefore, the operator's work environment can be improved.

  Moreover, since the exhaust pipe 14 according to the present embodiment includes the rising portion 14a, the turn-up portion 14b, the falling portion 14c, and the extending portion 14d, rainwater traces the exhaust pipe 14 during wind and rain. In addition, even when the engine of the hand guide roller H is stopped, rainwater can be prevented from flowing into the engine.

  Here, even if it is a light-weight film member or plate member that has almost no sound insulation / sound absorption effect in a planar shape, a sound insulation / sound absorption structure is obtained by fixing its periphery as a dome-shaped curvature shape. It is known (International Publication WO 2004/107313). In this regard, as in the present embodiment, if a part of the hood 5 is protruded into a dome shape, the surrounding hood body 31 is regarded as a fixed portion.

  Since the protruding portion 32 is formed in a dome shape, when sound pressure acts on the protruding portion 32, expansion and contraction vibration is generated in the in-plane direction while increasing or decreasing the curvature. By generating an in-plane expansion / contraction vibration by the sound pressure, sound insulation effect due to elasticity and sound absorption effect due to elastic loss can be achieved. That is, if the folded portion 14b of the exhaust pipe 14 is disposed in the vicinity of the dome-shaped protrusion 32, the noise generated from the surface of the exhaust pipe 14 is sound-insulated and absorbed by the dome-shaped protrusion 32, Noise can be reduced.

  In addition, since the support plate 11, the frame-like wall member 4, and the hood 5 according to the present embodiment constitute a casing that covers the front and rear parts, both side parts, and the upper and lower parts of the traveling machine body 1, engine sounds can be shielded. . Moreover, since the hood 5 has a two-layer structure including the air layer portion 43, the sound insulation effect can be improved, and the temperature increase related to the upper surface of the hood 5 can be suppressed by the heat insulation effect.

  Moreover, since the rib 51a, 52a, 53a which connects the lower layer part 41 and the upper layer part 42 is formed in the hood 5, the intensity | strength of the hood 5 can be improved. In the present embodiment, the first concave portion 51, the second concave portion 52, and the third concave portion 53 including the ribs 51a, 52a, and 53a are formed at a plurality of locations, and the shapes are different from each other. In addition, the rigidity can be improved. In addition, since the first concave portion 51, the second concave portion 52, and the third concave portion 53 are arranged symmetrically, the strength and rigidity can be improved in a balanced manner.

  Moreover, the bending vibration of the hood 5 can be suppressed by improving the rigidity of the hood 5. Thereby, the soundproofing effect of the hood 5 can be improved. Moreover, the wavelength of the bending vibration of the hood 5 can be shortened by projecting a part of the hood 5 to deform the cross section. Thereby, since the resonance frequency can be changed, the soundproofing effect can be improved.

  Further, by providing the handle 33 and opening and closing the hood 5, maintenance such as inspection of internal devices such as the battery BT and the hydraulic oil tank WT and replenishment of the water tank 23 can be easily performed. Further, by providing the handle 33 at a position close to the operation rod 3, it is easier to perform maintenance.

  Moreover, since the hood main body 31, the protrusion part 32, and the connection plate 56 are integrally molded, manufacture of the hood 5 becomes easy. Further, the hood 5 may be made of metal, but in the present embodiment, the hood 5 is formed of resin, so that the weight can be reduced.

  Although the embodiments of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, a sound absorbing material may be provided in the air layer portion 43. Thereby, the soundproofing effect can be further improved. In the present embodiment, the hood 5 has a two-layer structure, but may have three or more layers, or a single layer (a solid structure without the air layer portion 43). In the present embodiment, both the hood main body 31 and the protruding portion 32 have a two-layer structure, but at least one of them may have a two-layer structure.

  In the present embodiment, the hood main body 31 and the protruding portion 32 are integrated, but may be separate. Further, the hood body 31 may be configured from a plurality of members. Further, either the hood main body 31 or the protrusion 32 may be transparent so that the inside can be visually recognized.

  In the present embodiment, the rear side of the frame-like wall member 4 is configured using the water tank 23, but the front cover 21 and the side covers 22, 22 are provided by providing a rear cover in front of or behind the water tank 23. And the frame-like wall member 4 may be comprised with a rear cover.

  Moreover, although the protrusion part 32 was provided in the center of the left-right direction in this embodiment, you may provide in the position of other than that.

  Further, the shape of the exhaust pipe 14 may be another shape as long as the exhaust pipe 14 has a folded portion 14b that is folded back and forth. For example, the exhaust pipe 14 may omit the falling part 14c and directly connect the folded part 14b and the extended part 14d.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Roller 3 Operation rod 4 Frame-shaped wall member 5 Hood 11 Support plate 12 Side plate 13 Engine 14 Exhaust pipe 14a Upright part 14b Turn-up part 14c Falling part 14d Extension part 14e Exhaust port 15 Suspension hook 21 Front Cover 22 Side cover 23 Fuel tank 31 Hood main body 32 Projection portion 33 Handle 41 Lower layer portion 42 Upper layer portion 43 Air layer portion 51 First recess 51a Rib 52 Second recess 52a Rib 53 Third recess 53a Rib H Hand guide roller

Claims (5)

A traveling body having at least an engine and an exhaust pipe; and
A roller attached to the traveling machine body;
An operating rod extending rearward from the rear portion of the traveling machine body;
A frame-like wall member that covers the front and rear and both sides of the traveling machine body;
A hood that covers an upper portion of the frame-shaped wall member,
A hand guide roller configured to exhaust air from a front side of the traveling machine body or the frame-shaped wall member.   The exhaust pipe includes a rising portion extending upward, a falling portion spaced apart from the rising portion and extending downward, and one end of the rising portion and the falling portion 2. The apparatus according to claim 1, further comprising: a folded portion that connects the portions and is folded in the vertical direction; and an extending portion that extends from the other end portion of the falling portion toward the front side. The described hand guide roller.   The hood is provided with a hood main body and a dome-shaped protrusion protruding upward in a part of the hood main body, and the folded portion is disposed in the vicinity of the protrusion. The hand guide roller according to claim 2.   The at least one of the hood main body and the protruding portion includes a lower layer portion, an upper layer portion, and an air layer portion formed between the lower layer portion and the upper layer portion. The hand guide roller according to 3.   The hand guide roller according to claim 4, wherein a rib that connects the lower layer portion and the upper layer portion is formed.

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