JPS6237165B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a road roller of the type having rollers located one behind the other in the running direction and having parallel axes and a vibrating device consisting of a rotatable unbalanced weight. A travelable device that flattens road surfaces, etc.
This invention relates to a so-called vibrating roller safety device of the type in which an operator performs operations such as steering, forward movement, and reverse movement from a handle part while driving.

(Prior art and problems) In general, this type of vibrating roller can move forward and backward, but it does not have a steering device to change the direction of travel, so it is difficult for the operator to change the direction of travel by input. A very long connecting rod is provided, and a ring-shaped handle is provided at the tip of the connecting rod. In addition, the handle is located approximately 1 m from the road surface so that it can be easily operated by the operator, and the control mechanism for the vibrating roller is concentrated near the handle to facilitate operation. .

For this purpose, the operator of the vibrating roller holds a handle and positions himself facing the direction of movement of the vibrating roller.

Furthermore, vibrating rollers are generally designed and manufactured so that a control lever or the like is provided above the connecting rod of the handle so that the operator can perform various operations while walking, and the vibrating roller is operated from above the handle.

Conventional types of vibrating rollers have such a structure, so if an operator accidentally falls down while reversing the vibrating roller, the handle is located about 1 meter above the road surface as described above, and it is difficult to control the vibrating roller. Because the levers are located on the top of the connecting rod and are not designed to be operated from the road side, it is not possible to switch the control lever to the forward position from the position where it fell, causing the vibration roller to move backward. It was common for people to get stuck under them, causing serious accidents.

FIG. 1 shows the general shape of a conventional vibrating roller.

An engine 1 having an engine air cleaner 2 and an exhaust muffler 3 is mounted on a frame 4, and a device (not shown) for rotating a roller 5 by the output of the engine 1 and a device for giving vibration to the roller 5 are provided. A device (not shown) is provided, and a handle 6 for operating the vibrating roller is provided at the tip of the connecting rod 9.
A brake lever 7 for parking (the operating mechanism is not shown), a control lever 8 for forward and reverse operation (the operating mechanism is not shown), etc. are installed in the upper part of the connecting rod 9 near the handle 6. are located on the upper side for easier operation.

Fig. 2 is a view of the handle part in Fig. 1 from above, and the shape of the handle is oriented in two directions perpendicular to the direction of movement so that the operator can easily grip the handle in the direction of movement of the vibrating roller. It is made so that you can hold the books side by side. Normally, operators face the forward direction and hold the handlebars with both hands in order to maintain a stable position for the rollers that vibrate up and down, so they are unaware of obstacles behind them when reversing. When you get caught in an obstacle, you cannot immediately operate the control lever, and when you fall, as mentioned above, there is no control lever within reach of your body on the road, so you have to get up and move the upper side of the connecting rod. It was impossible to switch the vibrating rollers, which were moving backward toward the body, to forward motion other than by operating the control lever.

(Purpose) In order to solve the above-mentioned problems, the present invention has been made to prevent the operator from falling down during backward movement of the vibrating roller.
By switching the control lever from the reverse position to the forward position while the vehicle is in a fallen position, it is possible to quickly escape from a dangerous situation, thereby preventing serious accidents, as well as ensuring the safety of the operator and improving the safety of the equipment. The purpose is to

(Structure) In order to achieve the above-mentioned object, the present invention provides a road roller having a roller having a vibrating device consisting of axes parallel to each other in the running direction and consisting of a rotatable unbalanced weight. In a so-called vibrating roller, which is a movable device that flattens road surfaces, etc., and in which the operator performs operations such as steering, forward movement, and reverse movement from the handle part while driving, there is a control lever that can be rotated on a connecting rod. A link mechanism is provided on the side opposite to the roller of the control lever, and a rotatable protector is provided on the roller side with respect to the link mechanism, and one end of the control lever and the protector are connected to the link mechanism. The protective device is connected by a wire via a mechanism, and is configured to operate in conjunction with a control lever to switch the control lever from a reverse position to a forward position only when the protective device is rotated in one direction. .

(Example) Hereinafter, the present invention will be described in detail based on the drawings.

Incidentally, parts that are the same as those in the conventional example are indicated by the same reference numerals.

FIG. 3 shows an embodiment according to the present invention.
A rotatable protector 40 is provided near the control lever 8 of the connecting rod 9, and a rotatable pulley 41 is provided on the connecting rod on the anti-roller side of the protector, and this is used as a link mechanism to connect the protector and the control lever. are connected by a wire 44 via the pulley, and both ends thereof are connected to rotatable joints 42 and 43, respectively,
The rotary universal joint is connected to the control lever 8 described above.
and a portion of the protector 40, respectively.

Next, to explain the operation, in Fig. 3, the control lever 8 is in position A.
is the neutral position, and the vibrating roller does not move forward or backward. Further, B indicates a reverse position, and C indicates a forward position.

On the other hand, the position of the protective equipment 40 is shown as a neutral position, b as backward position, and c as forward position. When the vibrating roller moves backward, the control lever 8 is at position B, and the protector 40 is at position b. If the operator falls in this state, the operator moves the control lever 8 connected by the wire 44 from B to A by operating the protective equipment 40 in the forward direction of the vibrating roller from b to a to c. →C and the forward position can be changed. As a result, the vibrating roller can move forward without crushing the operator, thereby preventing accidents. In addition, even if the control lever is set to the neutral position and the protective gear 40 is accidentally moved to the reverse position, since the protective gear and the control lever 8 are connected by the wire 44, the wire will bend and the control will be controlled. The position of the lever 8 is not moved from the neutral position. That is, due to the presence of the pulley 41 serving as a link mechanism, the protector 40 moves the control lever 8 in the forward direction (direction C) only when it rotates in the forward direction (direction c); ), the control lever 8 does not move and remains at the same position. Therefore, the vibrating roller does not move backward.

4 to 6 show other embodiments of the present invention, in which in place of the pulley 41 and wire 44 in FIG. 3, a link is supported to rotate around a fulcrum 46. An example is shown in which the arm 45 is used as a link mechanism between the protector 41 and the control lever 8, and the protector 40 and the control lever 8 are connected by a cable wire 49 fixed with a wire 47 and two clips 48. As is well known, the cable wire 49 has a wire 51 slidably inserted into a flexible protection tube 50 as shown in FIG. Further, as shown in FIG. 6, the protective device 40 and the link arm 45 are connected by a rod 53 via two rotatable joints 52, and the link arm 45 and the control lever 8 are connected by a wire 54. May be connected.

In short, a link mechanism corresponding to the pulley 41 or link arm 45 is provided on the opposite roller side of the control lever 8 provided on the connecting rod 9, and the control lever and the protector 40 are connected by a wire via the link mechanism. By doing so, even if the protective device 40 is accidentally operated to a position corresponding to the reverse position of the control lever 8 when the control lever 8 is in the neutral position, the wire will not bend and the control lever 8 will not be moved to the reverse position. Can be used with very safe vibrating rollers.

(Effects) As described above, according to the present invention, even if the operator falls down during the reversing operation of the vibrating roller, the operator can easily operate the control lever while remaining in the fallen position.

Furthermore, even if the operator accidentally operates the protective equipment or safety ring from the neutral position to the reverse position, the control lever position will not be moved due to bending of the wire, ensuring essential safety (fail-safe) for the driver. The safety of the device can be improved.

As a result, it is possible to prevent the serious accident of falling under the reversing roller during reversing work, which often occurred during compaction work of vibrating rollers and putting the driver at risk, and is highly effective. There's something big about it.

[Brief explanation of the drawing]

FIG. 1 shows a side view of a conventional vibrating roller, and FIG. 2 shows the handle of FIG. 1 viewed from above. FIG. 3 shows a side view of one embodiment of the invention;
4 to 6 show other embodiments of the invention. 5...Roller, 6...Handle, 8...Control lever, 21...Safety ring, 22...Lever, 44, 47, 54...Wire, 41...Pulley, 40...Protective equipment, 46... The fulcrum of Link's arm, 53... Rod.

Claims (1)

[Claims] 1. A travelable device for flattening a road surface, etc., having a roller having a vibrating device consisting of axes parallel to each other in the traveling direction and consisting of a rotatable unbalanced weight, In a so-called vibrating roller of the type in which an operator performs operations such as steering, forward movement, and reverse movement from the handle part while driving, a rotatable control lever is provided on the connecting rod, and a link mechanism is installed on the side opposite to the roller of the control lever. At the same time, a rotatable protector is provided on the roller side with the link mechanism as a reference, and one end of the control lever and the protector are connected with a wire via the link mechanism, so that the protector can be rotated in one direction. 1. A safety device for a vibrating roller, characterized in that it is configured to operate in conjunction with a control lever to switch the control lever from a reverse position to a forward position only when the control lever is rotated.