JP3216121B2 - Hand guided rolling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand-guided rolling machine in which one of rolling rollers rotatably supported in front and rear of a frame is rotatable around a vertical axis with respect to the frame.

[0002]

2. Description of the Related Art Conventionally, a hand-guided rolling machine is provided with a rolling roller driven by a hydraulic (hydraulic) motor before and after a frame, and an operator operates a bar handle provided at a rear portion of the frame. Is being steered. In order to facilitate the turning property and the steering at the time of the rolling work, there has been known one in which the front and rear rolling rollers are relatively rotatable around a vertical axis. For example, Japanese Patent Publication No. 54-1196
In the device disclosed in Japanese Patent Application Publication No. 3 (1993) -214, roller drums (rolling rollers) are provided on a front frame and a rear frame, respectively, and the front frame and the rear frame are opposed to each other by an indirect coupling and a hydraulic cylinder device. The front and rear frames are pivotable about a vertical axis. A control box (bar handle) is mounted on the rear frame, and a hydraulic control handle is provided on the control box. By operating this handle, fluid is selectively supplied from the pump to both ends of the cylinder of the hydraulic cylinder device, and the front and rear pressure rollers relatively move around the vertical axis by moving the front frame relative to the rear frame. It turns and the compaction machine is steered. In the device disclosed in Japanese Patent Publication No. 52-31083, at least one of roller bodies (rolling rollers) provided before and after the frame is supported at one end in the width direction of the frame so as to be rotatable around a vertical axis. The other end of the roller body is horizontally guided by a sliding member in a sliding guide portion on the opposite side of the frame. A hydraulic cylinder is connected to the sliding member, and the displacement of the piston of the cylinder causes the sliding member to slide on the sliding guide portion, whereby the roller body turns around one end in the width direction of the frame, and the rolling machine is steered. Is to be done.

[0003]

In the prior art described above, since the turning of the rolling machine is a hydraulic system using a cylinder, a large hydraulic pump is used for traveling and steering of the rolling machine. It requires a high-powered engine to drive it, and is expensive. In addition, since hydraulic pipes are required for traveling and steering, respectively, there is a problem in that the piping and the like are complicated. Also, since the center of rotation of the pressure roller is at one end in the frame width direction,
Even if the compaction roller is turned at the same cutting angle in the left-right direction with a large minimum turning radius and poor turning performance, the turning radius in the left-right direction is different and the turning speed is different.
Also, when the frame has a vibration generating device, the vibration generated by the vibration generating device on the frame side is provided between the pressure roller and the frame because there is a gap between the bearing and a gap between the sliding guide portion and the sliding member. It is absorbed by the above gap and does not sufficiently transmit to the roller. For these reasons, there is a problem that the rolling function while applying vibration is not sufficient. An object of the present invention is to provide a hand-guided compacting machine that is inexpensive and has good operability by making it possible to use a small hydraulic pump by eliminating the need for cylinders and pipes for steering, thereby making the compacting machine compact. It is in. Also,
Another object is to transmit the vibration generated on the frame side to the pressure roller, and to reduce the vibration of the steering pressure roller transmitted to the bar handle.

[0004]

In order to solve the above-mentioned problems, in the present invention, a pressure roller is supported rotatably forward and backward with respect to a frame, and one of the pressure rollers rotates around a vertical axis. In a compacting machine that is possible, the frame is composed of a main frame and a sub-frame, the main-frame-side compaction roller is rotatably supported on the main frame, and the steering compaction roller is rotated on the sub-frame. Support the sub-frame with respect to the main frame as much as possible
Pivotable about a vertical axis at the center
Pivot the dollar around the vertical axis at the rear end of the frame
The other end of the link with one end pivotally attached to this bar handle
Part to the connecting member of the sub-frame and turn the bar handle.
Is the distance from the center of rotation to the link the center of rotation of the subframe?
To the link and set the bar handle to the left.
Manually operate to the right to move the steering compaction roller through the link.
The steering wheel is configured to be steered (claim 1).

Further , a vibration generator is provided on the main frame, and
A vertical pivot is projected at the center of the frame
The vertical pivot axis is pivotally supported on the main frame and
Pressing the frame against the frame
With no play in the vertical direction with respect to the main frame
It is supported as possible (claim 2). Also, the link
A shaft provided with an anti-vibration member at the frame side end, and inserted through the anti-vibration member
Is connected to a connecting member provided on the sub-frame (claim 3).

In addition, metal is used for bearings provided on the main frame.
Fits and pivots the lower shaft of the vertical pivot on the metal
Through the center shaft of the vertical swivel axis
The upper surface of the annular member provided above the receiver and the upper part of the vertical pivot axis
A leaf spring is interposed between the collar of the shaft and the leaf spring.
By the force, the step part of the vertical pivot axis is
The lower surface of the annular member is pressed against the upper surface of the bearing.
And play the sub-frame vertically with respect to the main frame.
The vehicle can be turned in a state where there is no rotation (claim 4) .

Further, a lower shaft portion is provided between the annular member and the bearing.
A plate member with a large diameter hole is interposed, and the upper surface of the plate member is
Metal and annular part
Form a grease passage space between the material and the annular member
Grease supplied from the grease nipple
Supply between the lower surface of the annular member and the plate member from the lease passage space,
In addition, the spiral grease groove formed on the inner peripheral surface of the metal
To feed between the lower surface of the metal and the step of the vertical swivel axis.
(Claim 5) .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, the frame 2 of the hand-guided rolling machine 1 is composed of a main frame 3 and a sub-frame 4. The main frame 3 includes left and right side plates 5 and 5 and base materials 7 and 8. The left and right side plates 5 and 5 are connected by base materials 7 and 8 bridged between the side plates 5 and 5. The upper plate 6 is attached to the upper plate 6 via vibration isolating members 9 for preventing vibrations provided at both ends of the base materials 7 and 8 from being transmitted to the upper plate 6. On the upper plate 6, a fuel tank 10, an engine 11, a watering tank 12, and the like are arranged. The main frame 3 has a main frame side pressure roller 13
Are provided rotatably. The main-frame-side pressure roller 13 is driven to rotate by a hydraulic pump (not shown) driven by the engine 11 and is vibrated by a known vibrating device 14 having an eccentric weight provided at a substantially central position of the main frame 3. . A bearing 15 is integrally welded to a center position of the base material 8 on the sub-frame side of the main frame 3.
As shown in FIG. 2, a metal 17 having a grease groove 16 formed in a spiral shape on the inner peripheral surface thereof is integrally fitted in the bearing 15.

The sub-frame 4 rotatably supports the steering pressure roller 18. The steering pressure roller 18 supported by the sub-frame 4 supports the main frame side pressure roller 13. In the same manner as described above, it is driven by the above-described hydraulic pump (not shown) and is also given vibration by the vibration generator 14.
A vertical turning shaft 19 is provided upright at a center position in the left-right direction of the steering pressure roller 18, that is, a center position in the left-right direction of the sub-frame 4. A lower shaft portion 19a of the vertical turning shaft 19 is rotatably inserted into the metal 17 of the bearing 15, and an upper shaft portion 19c of the vertical turning shaft 19 is inserted through a hole 20 provided in the upper plate 6 to be turned upward. It protrudes upward from the plate 6.

An annular member 23 provided with a grease nipple 22 communicating with the grease groove 16 via a grease passage 21 is key-connected to a central shaft portion 19b of the vertical turning shaft 19. Between the annular member 23 and the bearing 15, there is provided a plate member 25 attached to the rear base member 8 with bolts 24 and having a hole larger in diameter than the lower shaft portion 19a through which the vertical turning shaft 19 can be inserted. The upper surface of the plate member 25 is interposed and the annular member 23
Grease passage space 2 through which the grease can pass between the annular member 23 and the metal 17.
6 are formed. Upper shaft portion 19c of vertical turning shaft 19
Are fitted with a plurality of leaf springs (biasing members) 27,
The leaf spring 27 is provided between the upper surface of the annular member 23 and the upper shaft portion 19c.
And a collar 29 whose movement is restricted by a nut 28 screwed into the ring 17. The collar 29 is compressed and interposed between the collar 29 and the stepped portion 19 d of the vertical turning shaft 19 on the lower surface of the metal 17 by the spring force. The lower surface is always pressed against the upper surface of the bearing 15 via the plate member 25, so that the sub-frame 4 can turn around the vertical axis without play in the main frame 3 in the vertical direction. The grease supplied from the grease nipple 22 is supplied from the grease passage space 26 between the lower surface of the annular member 23 and the plate member 25, and the grease passage space 2
6 through the grease groove 16 and is supplied between the lower surface of the metal 17 and the step portion 19d to reduce the friction between the vertical turning shaft 19 and the bearing 15.

A vertical pipe member 30 is integrally provided at the rear end of the upper plate 6 of the main frame 3, and a rib 31 is welded between the pipe member 30 and the upper plate 6. One end of a bar handle 32 is connected to the pipe member 30 so as to be rotatable around a vertical axis by a bar handle connection shaft 33, so that the bar handle 32 can swing rightward and leftward with respect to the frame 2. The bar handle 32 includes a bar member 34, a rotating portion 35 connected to one end of the bar member 34, and an operation portion 36 provided on the other end. Rotating part 35
The upper plate 38 is welded to the upper portion of the frame 2 between the left and right plates 37, 37, and the lower plate 39 is welded to the lower portion. The lower surface of the upper plate 38 and the upper surface of the lower plate 39 are slidably contacted with the upper and lower end surfaces of the pipe member 30, respectively, and the bar handle connecting shaft 33 is inserted and axially attached thereto. On the other side between the left and right plates 37, 37, a distal end portion of a bar member 34 is connected so as to be vertically swingable. Also, the bar handle 32 is a booster mechanism 4
0 is connected to the sub-frame 4.

As shown in FIGS. 3 and 4, the booster mechanism 40 has one end of a link 41 pivotally attached to a projecting portion 39b of a lower plate 39 via a shaft 41a, and the other end integrally with the sub-frame 4. It is constituted by being axially attached to the provided connecting member 42.
The link 41 includes a hollow shaft member 43, a spherical joint 44, and a vibration isolating member 45 as shown in FIG. A nut 46 is welded to the bar handle 32 side of the hollow shaft member 43, and a spherical joint 44 is screwed to the nut 46 so that the length can be adjusted in the longitudinal direction of the link, and the position is fixed by tightening a nut 47. The shaft 41a passes through the spherical member 44a of the spherical joint 44. Sub-frame 4 of hollow shaft member 43
An annular storage member 48 is provided on the side, and an anti-vibration rubber 45 as an anti-vibration member is stored inside the annular storage member 48. Anti-vibration rubber 4
A bearing 49 penetrates through the center of the link 5, and the link 41 and the connecting member 4 are rotated by a shaft 50 rotatably supported by the bearing 49.
2 are connected. The distance L1 from the rotation center of the bar handle 32 to the link 41 is set shorter than the distance L2 from the rotation center of the sub-frame 4 to the link 41.

When the rolling machine 1 is operated along the curved rolling surface or the direction of the rolling machine 1 is changed during the rolling work on the road surface, the operator manually operates the bar handle 32 to the right. Or, when turning to the left, the turning operation of the bar handle 32 is transmitted to the steering pressure roller 18 via the link 41, and the steering pressure roller 18 is steered following the bar handle 32, It is easy to change direction and roll along curved roads. At this time, since the distance L2 is set to be larger than the distance L1, the cutting angle θ2 of the steering pressure roller 18 with respect to the left-right rotation angle θ1 of the bar handle 32 is θ2 = θ1 × L1 / L2. Bar handle 3
The force F1 required for operating the steering pressure roller 18 is
F1 = F × L where F is the force required to steer the vehicle directly
Since it is 1 / L2, it is possible to reduce the work load on the operator when turning the compacting machine 1. Further, at this time, the steering pressure roller 18 is steered left and right around the vertical axis at the center position in the left and right direction. Rolling roller 18
The steering angle is the same, so that the steering does not feel strange.
Also, when the vibration device 14 is operated during the rolling work,
Since the sub-frame 4 is supported by the main frame 3 so that there is no play in the vertical direction as described above, the vibration is sufficiently transmitted to the steering pressure roller 18 so that the vibration pressure operation can be reliably performed. Become. At this time, the vibration from the steering pressure roller 18 is absorbed by the vibration isolating rubber 45 of the link 41, and the vibration is prevented from being transmitted to the bar handle 32.

FIGS. 5 and 6 show a second embodiment.
And the bearing 1 is mounted on the sub-frame 4 in front of the main frame 3.
5 and vertical swivel axis 19 enable swivel around vertical axis
Provided so that one end of the link 41A is rotatable on the sub-frame 4.
It is pivotally attached to the other end of the link 41A and the rear end of the upper plate 6.
And the bar handle 32 connected to it through a vibration isolating rubber 45.
To be manually operated.

[0015]

As described above, in the present invention, the rolling machine
The sub frame supporting the steering compaction roller is used as the main frame.
Around the vertical axis at the center of the sub-frame in the left-right direction.
Swivelable and bar hand via link to secondary frame
Roller and manually operated the bar handle
To steer the pressure roller as in the past.
No need for cylinders and piping, and use a small pump
It does not require a high-power engine. This
A compact rolling machine is inexpensive and has a simple configuration.
Wear. In addition, the work load on the operator during steering can be reduced.
You. Also, if the turning radius when turning left and right is the same,
Without discomfort. Also, sub-frame and bar handle
Between the roller and the roller.
Absorbed by the vibration member. In addition, the sub frame becomes the main frame
Mounted without play in the vertical direction, so the main frame side
The vibration of the vibrating device is transmitted to the steering compaction roller,
Vibration compaction work can be performed reliably.

[Brief description of the drawings]

FIG. 1 is a side view of a hand-guided rolling machine.

FIG. 2 is an enlarged side view of a main part of FIG.

FIG. 3 is an enlarged plan view of a main part of FIG. 1;

FIG. 4 is a partial cross-sectional view of a link.

FIG. 5 is a second embodiment.

FIG. 6 is a plan view of FIG . 5;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 rolling machine 2 frame 3 main frame 4 sub-frame 18 steering rolling roller 19 vertical turning shaft 27 leaf spring (biasing member) 32 bar handle 40 booster mechanism 41 link 45 vibration-proof rubber (vibration-proof member) 50 Axis L1 Distance from bar handle rotation center to link L2 Distance from subframe rotation center to link

Claims (5)

(57) [Claims] 1. A rolling machine in which a pressure roller is rotatably supported back and forth with respect to a frame, and one of the pressure rollers is rotatable about a vertical axis. The main frame-side compaction roller is rotatably supported on the main frame, the steering compaction roller is rotatably supported on the sub-frame, and the sub-frame is Right and left direction of steering compaction roller
The bar hand is provided so as to be pivotable around the vertical axis at the center position.
Pivoting around the vertical axis at the rear end of the frame
The other end of the link with one end pivotally attached to this bar handle
Part to the connecting member of the sub-frame and turn the bar handle.
Is the distance from the center of rotation to the link the center of rotation of the subframe?
To the link and set the bar handle to the left.
Manually operate to the right to move the steering compaction roller through the link.
A hand-guided rolling machine characterized in that it is configured to steer . 2. An exciter is provided on a main frame, and a sub frame is provided.
A vertical swivel axis projects from the center of the
The pivot axis is pivotally supported on the main frame and the main frame is
The auxiliary frame is pressed against the
Swivel with no play in the vertical direction relative to the frame
2. The hand-guided compacting machine according to claim 1, wherein the compacting machine is supported by a hand . 3. A connection in which an anti-vibration member is provided at an end of the link on the sub-frame side, and a shaft inserted through the anti-vibration member is provided on the sub-frame.
3. The hand-guided compacting machine according to claim 2, wherein the machine is connected to a member . 4. A metal is fitted to a bearing provided on a main frame.
And insert the lower pivot of the vertical pivot axis into the metal so that it can pivot.
Through a key connected to the central shaft of the vertical swivel shaft.
The upper surface of the annular member provided on the upper side, and the upper shaft portion of the vertical pivot axis
A leaf spring is interposed between the collar and the spring force of the leaf spring.
This allows the vertical swivel axis step to be
Further, the lower surface of the annular member is pressed against the upper surface of the bearing,
No play in the vertical direction with respect to the main frame
3. The vehicle according to claim 2, wherein the vehicle is capable of turning in a state.
Is a hand-guided rolling machine according to 3. 5. A larger than a lower shaft portion between an annular member and a bearing.
A plate member with a hole with a diameter is interposed, and the upper surface of the plate member is
The lower surface of the material slides so that the metal and the annular member
The grease passage space is formed between the
Grease supplied from the lease nipple
Between the lower surface of the annular member and the plate member from the
Through the spiral grease groove formed on the inner peripheral surface of the metal.
Supply between the lower surface of the metal and the step of the vertical swivel axis
5. The hand-guided compacting machine according to claim 4, wherein: