JPH0627906U - Compaction machine - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the operability and the safety of the vibration control of the compaction roller. [Configuration] In addition to the main switch 23 for operating the hydraulic motor control electromagnetic valves 17 and 18 of the vibration generating mechanism 7, an automatic return type temporary stop switch for temporarily stopping the vibration at the speed change lever 13 or the steering handle grip portion. 25 is provided. [Effect] Since vibration is temporarily stopped while traveling at a predetermined speed or more, operability is improved and safety is ensured. Since the temporary stop switch 25 is an automatic reset type, it is safe to operate erroneously, and the temporary stop switch 25 and the speed change lever 13 can be simultaneously operated with one hand even while traveling.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a compacting machine used for compacting roadbed / roadbed and compacting asphalt, and more particularly to a compacting machine provided with a temporary stop switch for temporarily stopping a vibration generating mechanism.

[0002]

[Prior art]

 In a conventional compacting machine, an eccentric weight of a vibration generating mechanism is rotated by a hydraulic motor during traveling to vibrate the compaction roller to compact the road surface. The electromagnetic valve that controls the hydraulic motor operates by being supplied with power when the main switch is turned on to supply pressure oil to the hydraulic motor. As a result, the hydraulic motor is rotated, the rolling pressure is applied to the rolling roller, and the road surface is compacted.

By the way, in paving work and the like, it is necessary to stop the vibration because extra rolling pressure is not applied outside the paving work area. Also, because there are obstacles such as manholes and curbs on the road surface, it is necessary to stop the vibration even in this part. To cope with this, when the gear shift lever is set to the neutral position, the electromagnetic valve is set to the OFF position when the vehicle body is stopped, and the vibration is stopped.

[0004]

[Problems to be solved by the device]

 However, it is possible to turn off the main switch that operates the electromagnetic valve for controlling the hydraulic motor when passing through such an obstacle, but there are the following problems.

That is, when the main switch is on the operation panel, one hand is always on the speed change lever and the other hand is on the steering handle. Therefore, when trying to operate the main switch, the speed change lever or steering handle is operated. Either one of these hands must be released to operate the switch, which is dangerous and operability is poor. Also, if the speed change lever has a main switch, the main switch is an alternate switch, so you do not notice that the main switch is ON when you stop the operation with the main switch ON and restart the operation. It may be dangerous to drive.

An object of the present invention is to provide a compacting machine which is excellent in operability and safety when used for paving work and the like.

[0007]

[Means for Solving the Problems]

 The compaction machine according to claim 1 comprises a compaction roller for compacting a road surface, a vibration generation mechanism for vibrating the compaction roller, and a main switch for instructing activation / deactivation of the vibration generation mechanism. In a compaction machine equipped with a main switch arranged on the operation panel of the seat section, a temporary stop switch for temporarily stopping the vibration generating mechanism is provided separately from the main switch, and the temporary stop switch is provided. It is installed at or near the grip of the steering handle of the driver's seat or the top grip of the operating lever.

According to a second aspect of the present invention, the temporary stop switch is an automatic reset type that operates only when the switch is operated.

[0009]

[Action]

 In the compaction machine according to claim 1, when performing asphalt paving work, etc., the main switch is turned on, pressure oil is supplied to the hydraulic motor that drives the vibration generating mechanism, and the hydraulic motor is rotated to roll the compaction. Rolling pressure is applied to the rollers to compact the road surface. At this time, it is necessary to stop the vibration in advance and pass before outside the painting work area or immediately before obstacles such as manholes and curbs.

In such a case, if the temporary stop switch in the vicinity is operated with one hand on the speed change lever or the other hand on the steering handle in front of an obstacle, the operation panel Even if you do not operate the main switch by extending your other hand to the main switch of the, the hydraulic pressure supply to the hydraulic motor is stopped via the electromagnetic directional control valve, and the hydraulic motor gradually reduces its rotation speed, causing vibration. Will stop.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is a side view of the compacting machine, FIG. 2 is a plan view of the compacting machine, FIG. 3 is a plan view of an operation panel portion of a driver's seat, and FIG. 4 is a side view thereof.

As shown in FIGS. 1 and 2, the compacting machine of this embodiment includes a front rolling roller 2 and a rear rolling roller 3 in front of and behind the vehicle body 1. The front pressure roller 2 is steered by a steering cylinder 4. Both the compaction rollers 2 and 3 are drive wheels, and are driven by converting the output from the engine 6 arranged under the driver's seat portion 5 into a hydraulic drive system. A vibration generating mechanism 7 is built in each of the two compaction rollers 2 and 3. The vibration generating mechanism 7 has a well-known structure including a hydraulic motor 8 and an eccentric weight (not shown) that is rotated by this rotational force.

The driver's seat 5 includes a driver's seat 9 which is long in the left-right direction, an operation panel 10 located in front of the driver's seat 9, a steering wheel 11 arranged in the center of the operation panel 10, and an upper portion of the driver's seat 9. It has a head guard 12 for covering and a speed change lever 13 arranged on the left and right sides of the operation panel 10. As shown in FIG. 3, the operation panel 10 is provided with switches and meters 14 having substantially the same function so that they can be operated on both the left and right sides of the driver's seat 9. Corresponding to this, the shift levers 13 are also arranged on both sides of the driver's seat 9. As shown in FIGS. 3 and 4, the speed change lever 13 can be started, stopped, changed speed, and moved forward and backward with a single lever, and is supported by the vehicle body 1 so as to be swingable around a shaft 15.

FIG. 5 is a configuration diagram of a vibration control unit of the vibration generating mechanism. The configuration of the vibration control unit will be described based on this figure. In the vibration control, the electromagnetic valve 17 for the front rolling pressure for controlling the hydraulic motor for the front pressure roller and the hydraulic motor for the rear rolling roller are controlled. The electromagnetic valve 18 for rear-rolling pressure is controlled to be switched between strong and weak and OFF, and a detection switch 21 for detecting the shift position of the speed change lever 13, a vibration mode switch 22 for setting a vibration mode, and electromagnetic valves 17, 18 are used. And a control circuit 24 for controlling the electromagnetic valves 17 and 18 by signals from the main switch 23, the mode switch 22 and the detection switch 21. . Further, a temporary stop switch 25 for temporarily stopping the vibration is interposed in a signal line connecting the main switch 23 and the control circuit 24. The temporary stop switch 25 is an automatic reset type switch.

The detection switch 21 detects the forward movement position, the reverse movement position, and the neutral position of the speed change lever 13. The mode switch 22 can select a mode in which the front pressure roller 2 and the rear pressure roller 3 are vibrated, a mode in which only the front pressure roller 2 is vibrated, and a mode in which only the rear pressure roller 3 is vibrated. . The main switch 23 is an alternate switch, and the main switch 23 and the mode switch 22 are included in the switches 14 on the operation panel 9 as shown in FIG. The state can be notified to the driver by means of an indicator lamp or the like.

The control circuit 24 is composed of a general microcomputer (however, a combination of a relay and the like may be used), and the electromagnetic valve 17, based on the shift lever neutral position signal from the detection switch 21. Lever neutral stop means 26 for turning OFF 18 and valve control means for switching the electromagnetic valves 17, 18 to strong position / weak position / OFF position based on the mode signal and the strength signal from the mode switch 22 and the main switch 23. 27 and a temporary stop means 28 for temporarily stopping the electromagnetic valves 17, 18 based on a stop signal from the temporary stop switch 25. The electromagnetic valves 17 and 18 are three-position switching valves capable of switching among three positions of strong position / OFF position / weak position, and a pump 29, a tank 30 and a hydraulic motor 8 are connected to the ports thereof. .

FIG. 6 is a view showing a state in which the temporary stop switch is arranged on the shift lever portion. As shown in the figure, the temporary stop switch 25 is arranged on the upper surface of the switch mounting box 32 near the lower side of the upper grip 31 of the speed change lever 13. The switch mounting box 32 is mounted on the speed change lever 13 by a bolt 33 via a sandwiching member 34 so that the mounting position can be adjusted.

In the above configuration, when performing asphalt pavement work, etc., the main switch is turned on, the electromagnetic valve is operated to supply pressure oil to the hydraulic motor, and the rotation is increased to about 3000 rpm. Apply rolling pressure to and compact the road surface. In this case, when passing over the joint between the pavement surface and the other portion or over an obstacle such as a manhole or curb, it is necessary to pass the vibration immediately before the passage.

When passing through such an obstacle, the temporary stop switch 25 in the vicinity thereof is operated with one hand while operating the speed change lever 13 while traveling before this obstacle. Then, the temporary stop means 28 outputs an OFF signal to the electromagnetic valves 17 and 18, and the electromagnetic valves 17 and 18 are turned off. Therefore, the electromagnetic valves 17 and 18 can be in the OFF position without reaching the main switch 23 and operating the main switch 23. When the electromagnetic valves 17 and 18 are turned off, the supply of pressure oil to the hydraulic motor 8 is interrupted, the rotational speed of the hydraulic motor 8 is gradually decreased, and the vibration is stopped.

In the case of a conventional compacting machine, when passing through an obstacle as described above, release the hand from the speed change lever 13 or the steering handle in front of the obstacle and switch the main switch to the off position to generate vibration. Since it stops and passes over obstacles, operability is poor and dangerous. On the other hand, in the compacting machine of this embodiment, the vibration can be temporarily stopped while traveling at a constant speed, so that the operability is good and the safety is high. After passing the obstacle, if you release your hand from the pause switch 25, the pause switch 25 is an automatic return switch, so the control circuit 24 receives the signal from the main switch 23 as it is and passes the obstacle. You can run while vibrating again in the previous vibration mode.

In addition, at a connecting portion of a pavement surface that requires compaction and a road surface that does not require compaction, when the vehicle passes a target point while traveling, the temporary stop switch 25 is operated to stop the vibration. Then, as in the case of passing through the above-mentioned obstacle, the excess part is not compacted and the workability is improved.

Although it may be possible to place a temporary stop switch at the driver's feet, if the temporary stop switch is arranged at the feet, the switch will be operated frequently when it is not intended, and it may be difficult for a beginner to operate. It is not appropriate because it causes many troubles. In this respect, if the speed change lever 13 or the steering handle grip portion is provided with the temporary stop switch 25, the switch operation can be visually checked during operation, and the operation can be performed after confirmation.

Further, in the above embodiment, the temporary stop switch 25 is arranged in the vicinity of the lower side of the upper end grip portion 31 of the transmission lever 13 which is always operated to improve the operability, but is arranged in the grip portion 31. Even if the same effect can be expected.

[0024]

[Effect of device]

 According to the compacting machine of claim 1, as described above, the vibration temporary stop switch is provided separately from the main switch on the operation panel, so that the steering wheel or the speed change lever can be run without releasing the hand. Vibration can be stopped temporarily, improving operability and further increasing safety.

According to the compacting machine of the second aspect, since the temporary stop switch is configured to be an automatic reset type that operates only when it is operated, the influence of erroneous operation is reduced.

[Brief description of drawings]

FIG. 1 is a side view of a compacting machine according to an embodiment.

FIG. 2 is a plan view of the compaction machine.

FIG. 3 is a plan view showing an operation panel section of a driver's seat section of the compacting machine.

FIG. 4 is a side view showing an operation panel section of a driver's seat section of the compacting machine.

FIG. 5 is a configuration diagram of a vibration control unit of the vibration generating mechanism of the compaction machine.

FIG. 6 is a diagram showing a temporary stop switch and a shift lever portion of the compaction machine.

[Explanation of symbols]

 1 Vehicle Main Body 2, 3 Rolling Roller 5 Driver's Seat 6 Engine 7 Vibration Generation Mechanism 8 Hydraulic Motor 9 Driver's Seat 10 Operation Panel 11 Steering Handle 13 Shift Lever 17, 18 Electromagnetic Valve 21 Detection Switch 22 Mode Switch 23 Main Switch 24 Control Circuit 25 Pause switch 31 Upper grip part 32 Switch mounting box 34 Clamping member

Claims (2)

[Scope of utility model registration request] 1. An operation panel for a driver's seat, which comprises a compaction roller for compacting a road surface, a vibration generation mechanism for vibrating the compaction roller, and a main switch for instructing activation / deactivation of the vibration generation mechanism. In a compaction machine including a main switch arranged above, a temporary stop switch for temporarily stopping the vibration generating mechanism is provided separately from the main switch, and the temporary stop switch is used for steering of a driver's seat. A compaction machine characterized in that it is arranged at or near the grip of the handle or the grip of the gear shift lever. 2. The compacting machine according to claim 1, wherein the temporary stop switch is an automatic reset type switch that operates only when the switch is operated.