JP6087661B2 - Vibration roller - Google Patents

Description

  The present invention relates to a vibrating roller, and more particularly to a hand-guided vibrating roller.

  As a hand guide type vibration roller, for example, as described in Japanese Patent Application Laid-Open No. 2005-307475, a bottom roller of a fuselage frame is provided with a roller drum for compaction used for compacting the ground surface, and a power unit (gasoline). Engine and other motors, hydraulic pumps, hydraulic motors, etc.) and vibration generators are mounted on the fuselage frame, and the handlebars that support the operating handles protrude from the lower rear side of the fuselage frame diagonally upward. There is known a vibrating roller that is arranged in such a manner that an operator can perform various operations such as forward and backward advancement, steering, and stopping while walking on the rear side of the aircraft.

  The handle bar of this type of vibration roller is constructed so that the base end is pivotally attached to the lower part of the rear side of the fuselage frame and the tip side can be rotated (raised) in the vertical direction. Is held in the “use position” that extends obliquely upward on the rear side of the fuselage frame, and the handlebar stands upright (stands up) from the pivot point when stored or loaded onto a transport vehicle. "Position" can be held.

  As a means for holding the handlebar in the “use position” or “storing position”, a manual latch type stopper (held in the cylinder and urged by the latch spring so that the tip portion protrudes from the cylinder is generally used. Lock pin, the lock hole through which the tip of the lock pin penetrates when the handlebar is in the “use position”, the lock hole through which the tip of the lock pin penetrates when the handlebar is in the “storage position”, and the lock hole And an operation grip for releasing the lock by pulling out the tip of the lock pin penetrating into the lock pin is often arranged.

JP 2005-307475 A

  In the conventional vibration roller, the manual latch type stopper for holding the handlebar in the “use position” or “storage position” has an operation grip for releasing the lock, and the pivot point of the base end portion of the handlebar is Although it is configured to be pulled in the horizontal direction toward the side of the fuselage frame in the vicinity, the pivot point of the handlebar in the vibration roller is almost always set to a low position. The handlebar must be bent low when performing the unlocking operation of the handlebar, resulting in an unstable posture and, as a result, an inconvenience that may cause a fall accident. It has been pointed out.

  The present invention is intended to solve the above-described problems in the prior art, and is a hand-guided vibration that allows the operator to perform the unlocking operation of the handlebar while maintaining a stable "standing position" with both feet. The object is to provide a roller.

  In the vibration roller according to the present invention, the operation handle is attached to the rear side of the body frame via the handle bar, and the handle bar is pivotally attached to the body frame via the horizontal shaft held at the lower rear side of the body frame. The handle bar is configured such that the front end side of the handle bar can be pivoted in the vertical direction, and the handle bar is in a posture in which the handle bar protrudes obliquely upward from the rear lower part of the body frame, and the handle bar is horizontal. A manual latch type stopper that can lock the posture of the handlebar at each storage position that stands up from the shaft is disposed above the horizontal shaft that pivotally supports the handlebar, and the manual latch type stopper The lock pin and the latch pin that urges the lock pin so that the tip of the lock pin protrudes downward toward the horizontal axis. A spring, an operation grip for releasing the lock of the handlebar, and a fixed stopper member that engages with the tip of the protruding lock pin and restricts the rotation of the handlebar. It is arranged above the horizontal axis that pivots the bar, and the handlebar can be unlocked by pulling upwards, regardless of whether the handlebar is in the use position or the storage position. It is characterized by being composed.

  The fixed stopper member is fixed above the horizontal axis, and has an upward arc-shaped surface concentric with the horizontal axis, a front end surface formed on the front side of the body of the arc-shaped surface, and a body of the arc-shaped surface. A rear end surface formed on the rear side, the handlebar is in the use position, and when the front end of the lock pin is in a protruding state, the rear end surface of the fixed stopper member is “the front end of the lock pin. Is located on the front side of the fuselage and is located at a position where it engages and interferes with the lock pin when the handlebar is to be rotated upward, and the handlebar is restricted from rotating upward. When the handle bar is in the storage position and the front end of the lock pin is in the protruding state, the front end surface of the fixed stopper member is “the rear side of the front end of the lock pin, Handlebar downward When trying to rotate, is arranged on the lock pin and the engaging position interfering ", it is preferable that the handle bar is configured to restrict the pivoting downward side.

  The fixed stopper member includes a rear side lock hole that receives the tip of the lock pin when the handle bar is in the use position and locks the handle bar posture, and a lock pin of the lock pin when the handle bar is in the storage position. You may comprise so that the front side lock hole which receives a front-end | tip part and locks the attitude | position of a handlebar may each be formed in a circular arc surface.

  In the vibration roller according to the present invention, the operation grip for releasing the lock of the handlebar by the manually latched stopper is disposed above the horizontal axis that pivotally supports the handlebar, and the handlebar is in the use position, and Since the lock can be released by pulling upwards in any position of the stowed position, the worker is stable in the vicinity of the operation handle attached to the tip of the handlebar. In this “standing position”, the operator can reach out from above the handlebar and grasp the operation grip to perform the unlocking operation, and thus it is possible to avoid accidents such as a worker falling over.

FIG. 1 is a side view schematically showing the configuration of the vibration roller according to the first embodiment of the present invention. FIG. 2 is a partially enlarged sectional view of the manual latch type stopper 20 in a state where the handle bar 18 is locked at the use position D shown in FIG. FIG. 3 is a partially enlarged cross-sectional view of the manual latch type stopper 20 in a state in which the handle bar 18 is locked at the storage position U shown in FIG. FIG. 4 is a diagram illustrating a state in which the lock by the manual latch type stopper 20 is released and the handle bar 18 is being rotated.

  Hereinafter, embodiments of the vibration roller according to the present invention will be described. FIG. 1 is a side view schematically showing the configuration of the vibration roller according to the first embodiment of the present invention. The vibration roller is used for compaction of roads and other ground surfaces, and includes a power unit (a prime mover 11, a hydraulic pump 12, and traveling hydraulic motors 13 and 13), an exciter, and a body frame 10. 14 and a fuel tank 15 are mounted, and an operation handle 30 is attached to the rear (left side in FIG. 1) of the body frame 10 via a handle bar 18.

  The handle bar 18 has a proximal end pivotally attached to the rear lower portion 16 of the body frame 10, and the distal end side (and the operation handle 30 attached to the distal end portion) can be rotated in the vertical direction. It is configured so that it can be undulated. More specifically, a pair of brackets 19 that hold the horizontal shaft 17 are attached to the rear lower portion 16 of the body frame 10 so as to protrude toward the rear of the body frame 10. The part is pivotally supported by the horizontal shaft 17.

  Rotation of the handle bar 18 pivotally supported by the horizontal shaft 17 is performed at a position indicated by a solid line in FIG. 1 (use position D) (the handle bar 18 is inclined rearward and upward from the rear lower portion 16 of the body frame 10. Within the range (rotation allowable range) from the position in the protruding position) to the position indicated by the broken line (storage position U) (the position in which the handlebar 18 stands upright (stands up) from the horizontal shaft 17) Rotation exceeding these positions is restricted by a pair of protrusions (not shown) formed on the bracket 19.

  Further, a manual latch type stopper 20 that can lock the attitude of the handle bar 18 at the use position D and the storage position U is disposed on the base end portion of the handle bar 18 and the bracket 19. As shown in FIG. 2, the manual latch type stopper 20 includes a cylinder 22, a lock pin 23, a latch spring 24, an operation grip 27, and a fixed stopper member 25.

  More specifically, the cylinder 22 is positioned above the horizontal shaft 17 via the cross beam 21 welded to the base end portion of the handlebar 18 with the axis center orthogonal to the horizontal shaft 17. It is fixed. The lock pin 23 is held in the cylinder 22 so as to be slidable in the axial direction. The latch spring 24 is held in the cylinder 22, and the front end of the lock pin 23 is moved downward (from the front end of the cylinder 22), regardless of whether the handlebar 18 is in the use position D or the storage position U. It is biased to project toward the horizontal shaft 17 side. The operation grip 27 is disposed on the opposite side of the cylinder 22 (opposite to the protruding direction of the lock pin 23), and the latch spring is used regardless of whether the handle bar 18 is in the use position D or the storage position U. The lock pin 23 is accommodated in the cylinder 22 by being pulled upward (opposite to the protruding direction of the lock pin 23) against the urging force of 24, and the tip of the lock pin 23 protrudes from the tip of the cylinder 22. It is possible to be in a state that does not.

  As shown in FIG. 2, the fixed stopper member 25 is fixed above the horizontal shaft 17 in the bracket 19 and has an upward arcuate surface 25 c concentric with the horizontal shaft 17. Further, a front end face 25a is formed on the front side (front side in the body frame 10) of the arc-shaped surface 25c, and a rear end face 25b is formed on the rear side (back side in the body frame 10).

  2 when the handle bar 18 is in the position shown in FIG. 2 (use position D shown by a solid line in FIG. 1) and the tip of the lock pin 23 is in the protruding state (when the operation grip 27 is not pulled). The rear end surface 25b of the stopper member 25 is located on the front side of the distal end portion of the lock pin 23 (the handle bar 18 is to be rotated upward (toward the storage position U indicated by the broken line in FIG. 1)). (It is disposed at a position where it engages with and interferes with the lock pin 23), and the handlebar 18 is configured to be restricted from rotating upward. The handle bar 18 is configured not to rotate downward from the position shown in FIG. 2 (use position D shown by a solid line in FIG. 1) by a projection (not shown) formed on the bracket 19. Therefore, when the handle bar 18 is in the position shown in FIG. 2 (use position D shown by a solid line in FIG. 1) and the tip of the lock pin 23 is in the protruding state, the posture of the handle bar 18 is in the use position. It will be locked at D.

  On the other hand, when the handle bar 18 is in the position shown in FIG. 3 (the storage position U shown by the broken line in FIG. 1) and the tip of the lock pin 23 is in the protruding state (when the operation grip 27 is not pulled). The front end face 25a of the fixed stopper member 25 is located on the rear side of the front end of the lock pin 23 (the handle bar 18 is rotated downward (toward the use position D shown by a solid line in FIG. 1)). The handle bar 18 is restricted from rotating downward (toward the use position D indicated by the solid line in FIG. 1). It is configured. The handle bar 18 is configured so as not to rotate to the front side of the machine body from the position shown in FIG. 3 (the storage position U shown by a broken line in FIG. 1) by a projection (not shown) formed on the bracket 19. Therefore, when the handle bar 18 is in the position shown in FIG. 3 (the storage position U indicated by the broken line in FIG. 1) and the tip end portion of the lock pin 23 is in the protruding state, the posture of the handle bar 18 is It will be locked in position U.

  When the operation grip 27 is pulled upward against the urging force of the latch spring 24 (the direction opposite to the protruding direction of the lock pin 23), the lock pin 23 is accommodated in the cylinder 22, and the lock pin 23 Of the fixed stopper member 25 does not interfere with any of the front end face 25a and the rear end face 25b. As a result, the lock by the manual latch type stopper 20 is released, and the handlebar within the allowable rotation range. 18 rotations are possible. That is, the handle bar 18 is moved from the position shown in FIG. 2 (use position D shown by a solid line in FIG. 1) to the position shown in FIG. 3 (the storage position U shown by a broken line in FIG. 1) or in the opposite direction. It becomes possible to rotate to.

  When the operation grip 27 is pulled upward to release the lock and the handlebar 18 is rotated from the use position D to the storage position U, the tip of the lock pin 23 is located behind the fixed stopper member 25. After the upper edge of the side end face 25b is overcome, even if the hand is released from the operation grip 27, the distal end face of the lock pin 23 remains on the fixed stopper member 25 as shown in FIG. The handle bar 18 can be rotated without sliding in the arcuate surface 25c, and when the tip of the lock pin 23 exceeds the upper edge of the front end surface 25a, the lock pin 23 is in a protruding state by the urging force of the latch spring 24, and the handle bar 18 is locked at the storage position U.

  Similarly, when the handle bar 18 is rotated from the storage position U toward the use position D, when the tip of the lock pin 23 passes over the upper edge of the front end face 25a of the fixed stopper member 25, the operation grip 27 Even if the hand is released, the tip surface of the lock pin 23 slides on the arcuate surface 25c of the fixed stopper member 25 until the use position D is reached, and the handle bar 18 is rotated without being locked. When the front end of the lock pin 23 exceeds the upper edge of the rear end face 25b, the lock pin 23 is projected by the urging force of the latch spring 24, and the handle bar 18 is locked at the use position D. Will be.

  Incidentally, the angular position of the handle bar 18 where the tip of the lock pin 23 contacts the front end face 25a or the rear end face 25b of the fixed stopper member 25, and a pair of protrusions (handle bar provided on the bracket 19). The lock pin 23 is provided so that a slight play angle is provided between the base end portion of the handle bar 18 and a projection (which defines a rotation allowable range of 18) (not shown). Therefore, it is preferable to set the size and arrangement position of the fixed stopper member 25.

  As described above, in the vibration roller according to the present embodiment, the operation grip 27 for releasing the lock of the handle bar 18 by the manual latch type stopper 20 is provided above the horizontal shaft 17 that pivotally supports the handle bar 18. Even if the handlebar 18 is disposed and in either the use position D or the storage position U, the lock can be released by pulling upward (obliquely upward). An operator can perform a lock release operation by reaching out from above the handlebar 18 and grasping the operation grip 27 while keeping a stable standing posture in the vicinity of the operation handle 30 attached to the tip of the handlebar 18. it can.

  In the present embodiment, the vibration roller that can lock the rotation of the handle bar 18 at the storage position U and the use position D has been described. However, any one of the arcuate surfaces 25c of the fixed stopper member 25 is described. An intermediate lock hole for receiving the distal end portion of the lock pin 23 is drilled at the position, and the handle bar 18 is slightly higher than the use position D and the storage position U (for example, slightly higher than the use position D shown by a solid line in FIG. 1). The height position of the operation handle 30 at the distal end portion of the handle bar 18 may be changed according to the height of the operator to be operated.

  Further, the fixed stopper member 25 is formed to be larger than that shown in FIG. 2, and the rear side lock hole that receives and locks the front end portion of the lock pin 23 at the use position D, and the front end of the lock pin 23 at the storage position U. You may make it form the front side lock hole which receives and locks a part in the circular arc-shaped surface 25c, respectively.

10: Airframe frame,
11: Motor,
12: Hydraulic pump,
13: Hydraulic motor for traveling,
14: shaker,
15: Fuel tank,
16: Lower rear side,
17: horizontal axis,
18: Handlebar,
19: Bracket,
20: Manual latch type stopper
21: Cross beam,
22: cylinder,
23: Lock pin,
24: latch spring,
25: Fixed stopper member,
25a: front end face,
25b: rear end face,
25c: an arcuate surface,
27: Operation grip,
30: Operation handle,
D: Use position,
U: Storage position

Claims (1)

The operation handle is attached to the rear side of the fuselage frame via the handle bar, the handle bar is pivotally attached to the fuselage frame via a horizontal shaft held at the lower rear side of the fuselage frame, and the front end side of the handle bar is moved up and down In the vibration roller configured to be rotatable in the direction,
The handlebar position is adjusted at the use position where the handlebar protrudes obliquely upward from the lower rear side of the fuselage frame and at the storage position where the handlebar stands upward from the horizontal axis. A manually latchable stopper that can be locked is located above the horizontal axis that pivots the handlebar,
A manually latched stopper, a lock pin, a latch spring that urges the lock pin so that the tip of the lock pin protrudes downward toward the horizontal axis, and an operation grip for unlocking the handlebar; A fixed stopper member that engages with the tip of the lock pin in a protruding state and restricts the rotation of the handlebar;
The operation grip is disposed above the horizontal axis that pivotally supports the handlebar, and the handlebar is locked by pulling upward regardless of whether the handlebar is in the use position or the storage position. It is configured to be released,
A fixed stopper member is fixed above the horizontal axis, and has an upward arcuate surface concentric with the horizontal axis, a front end surface formed on the front side of the fuselage and the rear side of the arcuate surface. And a rear end face formed on
When the handle bar is in the use position and the front end of the lock pin is in the protruding state, the rear end surface of the fixed stopper member is the front side of the machine body at the front end of the lock pin, and the handle bar is moved upward. When trying to rotate, it is arranged at a position where it engages and interferes with the lock pin, and is configured to restrict the handlebar from rotating upward,
When the handlebar is in the stowed position and the front end of the lock pin is in the protruding state, the front end surface of the fixed stopper member is on the rear side of the fuselage and the handlebar is rotated downward. A vibration roller, wherein the vibration roller is arranged at a position where it engages with and interferes with a lock pin and restricts the handlebar from rotating downward when it is to be moved .

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