JPH043673Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a high-pressure washing vehicle that cleans the inside of various piping and equipment such as sewer pipes and boilers with high-pressure water.

2. Description of the Related Art High-pressure washing vehicles are commonly used for the purpose of cleaning and removing sludge adhering to the insides of various piping and equipment such as water and sewage pipes and boilers. Normally, this type of high-pressure washing vehicle consists of three parts, an engine pump chamber 1, a tank chamber 2, and an operation chamber 3, as shown in FIG. By operating the plunger pump, the normal pressure water stored in the water tank in the tank chamber 2 is converted into high pressure water.
A hose reel 13 is housed in the operation deal chamber 3, and the base end of the hose wound on the hose reel is connected to the plunger pump via a predetermined pipe. During cleaning work, the injection nozzle attached to the tip of the hose is inserted into the equipment to be cleaned, such as a sewer pipe, and then the hose is wound onto the operation panel and hose reel provided in the operation deal room 3. By operating the hose, a plunger pump injects high-pressure water from the injection nozzle connected to the tip of the hose, and the hose is automatically advanced by the injection pressure of the high-pressure water. while stirring the sludge inside the sewer pipe. After this, the hose is retracted while being wound onto the hose reel,
The sludge was washed and removed.

Problems that the invention aims to solve By the way, in the conventional high-pressure washing vehicle mentioned above, the hose reel is supported on a base fixed to the vehicle body, so when operating the hose, it is necessary to extend the hose in only a limited direction. It is difficult to work, but the workability is poor.
Furthermore, depending on where the high-pressure washing vehicle is parked, it is often impossible to carry out the work.

To deal with this problem, a hose reel is attached to the vehicle body via a turntable, and high-pressure water piping is installed to pump high-pressure water to the hose reel, as well as a hydraulic motor that rotates the hose reel and winds the hose. A high-pressure washing vehicle has been proposed in which the hydraulic piping is formed from a flexible material and the hose reel can be rotated in a horizontal plane. However, another problem with this high-pressure washing vehicle is that the high-pressure water pipe and the hydraulic pipe swing as the turntable rotates, reducing work efficiency.

In addition, for the high pressure water piping and hydraulic piping mentioned above,
Since torsional force is applied repeatedly due to the rotation of the turntable, there is also an inconvenience that the durability deteriorates as the period of use passes.

Furthermore, since the turntable rotation device described above uses a bidirectional power transmission means, when some external force is applied to the hose reel or turntable, the turntable rotates and changes the direction in which the hose reel is pulled out. It also has the disadvantage that it changes. This phenomenon was particularly likely to occur during pumping of high-pressure water, and had an extremely high risk of causing an accident.

Furthermore, since the control panel is fixed directly on the floor of the control room so that it can be operated from outside the vehicle body and from the rear, it is possible to rotate the hose reel in the working direction and move the hose in a straight line. Even if it were pulled out without much effort, these operations required going to the rear of the vehicle and operating the control panel, which was a major obstacle to improving work efficiency.

The main purpose of the present invention is to find a solution to the above-mentioned problems found in conventional high-pressure washing vehicles.

Means for Solving the Problems In view of these objectives, the present invention includes a turntable 12 rotatably disposed at the rear of the vehicle body, and a turntable 12 disposed on the turntable 12 and rotated by a hydraulic motor 31. A hose reel 13 to be driven, an operation panel 15 disposed on the turntable 12 in parallel with the hose reel 13 and with the operation surface facing the direction in which the hose is pulled out, and a self-locking mechanism on the turntable 12. a drive device 18 that provides a turning motion via a reducer 20; a high-pressure water pipe 34 that supplies water to the hose reel 13 via a swivel joint 33 disposed on the rotation axis of the turntable 12; The gist of the present invention is a high-pressure washing vehicle comprising a hydraulic piping 36 that pressure-feeds hydraulic fluid to the hydraulic motor via a swivel joint 35 disposed on the rotation axis of the turntable 12.

Operation By arranging the operation panel 15 on the turntable 12 in parallel with the hose reel 13 and with the operation surface aligned in the hose withdrawal direction, the hose reel 13 can be operated at the hose withdrawal position. It became possible to operate both the machine and the control panel at the same time.

Embodiment FIGS. 1 to 4 are drawings showing an embodiment of the present invention.

In these drawings, 10 is a fixed base fixed to the floor 3a of the operation deal chamber 3 and has a hollow shaft 11 erected on the upper surface; 12 is a turntable rotatably supported on the fixed base 10; 13 is a bracket 14,1 on the top surface of the turntable 12.
a hose reel rotatably supported via 4;
15 indicates an operation panel.

The turntable 12 has a side body portion 12a.
is rotatably fitted onto the hollow shaft 11 of the fixed base 10 via bearings 16, 16, and a large sprocket 17 is fixed to the side body portion 12a. Further, an operation panel 15 is disposed on the turntable 12 in parallel with the hose reel 13 and with its operation surface facing the direction in which the hose is pulled out from the hose reel. The cords connected to the operation panel are housed in an aligned state within a protective cover (not shown) attached to the turntable so that they will not be entangled or pulled when the turntable 12 rotates. There is. Furthermore, a drive device 18 is disposed on the side of the turntable 12 to give the turntable 12 a turning motion. The drive device 18 includes a hydraulic motor 19 and a reduction gear 20, and the driving force of the hydraulic motor 19 is transmitted to the reduction gear 20 via a shaft coupling 21.
The signal is transmitted from a small sprocket 22 fixedly attached to the output shaft of the reducer 20 to a large sprocket 17 via a roller chain 23 to rotate the turntable 12 in a desired direction. The speed reducer 20 has a self-locking function using a worm gear or the like, and power is transmitted in only one direction.

The hose reel 13 is fixed to a support shaft 24 rotatably supported at both ends by brackets 14, 14. A large sprocket 26 is disposed at one end of the support shaft 24 via a dog clutch 25, and a swivel joint 27 is disposed at the other end. A hose connection part 28 is fixed to the inner side surface of the hose reel 13 supported on the support shaft 24, and the hose connection part 28 is connected to the swivel via a communication hole 24a formed in the support shaft 24. It communicates with joint 27. An open window 29a is formed in a part of the hose winding drum 29 of the hose reel 13, and the base end of the hose is inserted into the winding drum 29 through the open window 29a and connected to the hose connection part 28. It is connected.

A hydraulic motor 31 with a small sprocket 30 fixed to the tip of the main shaft is disposed on the bracket 14 that supports the end of the spindle 24 on the large sprocket 26 side. A roller chain 32 is wrapped around it.

Reference numeral 33 denotes a swivel joint disposed on the upper wall 3b of the operation chamber 3 and coaxially with the rotation axis of the turntable 12, and a high-pressure water pipe extending from the engine pump chamber 1 is connected to the swivel joint. [not shown], and a high-pressure water pipe 34 extending toward a swivel joint 27 attached to the support shaft 24 of the hose reel 13 is connected. As mentioned above, the high-pressure water pipe 34 has a swivel joint 33 whose rotation center is located on the same straight line as the turntable 12 and the hose reel 13.
Turntable 1
The turntable rotates integrally with the turntable 12 and the hose reel 13 without changing the relative arrangement positions of the turntable 2 and the hose reel 13. The high-pressure water thus sent out from the engine pump chamber 1 flows into the support shaft 24 via the swivel joint 33, the high-pressure water pipe 34, and the swivel joint 27.
It is supplied to the hose connection part 28 from the communication hole 24a.

Reference numeral 35 denotes a swivel joint disposed below the floor 3a of the operation deal chamber 3 and coaxially with the rotation axis of the turntable 12, and connected to a hydraulic pipe [not shown] and a hose extending from a hydraulic power source (not shown). A hydraulic pipe 36 is connected to a hydraulic motor 31 that rotates the reel 13. The hydraulic piping 36
is connected to the hydraulic motor 31 via a relay joint 37 fixed to the top surface of the turntable 12, and similarly to the high-pressure water pipe 34, the relative position between the turntable 12 and the hose reel 13 can be changed. It rotates integrally with the turntable 12 and the hose reel 13 without any interference.

In addition, numeral 38 in the figure indicates a support for preventing the high-pressure water pipe 34 from swinging, which is installed upright on the bracket 14 of the hose reel 13.

Hereinafter, a procedure for cleaning sewer pipes, etc. using the high-pressure washing vehicle according to the present invention will be explained.

Note that the hose reel 13 has a hose connection portion 28.
It is assumed that a hose of a predetermined length whose base end is connected to is wound around the hose, and a desired high-pressure water injection nozzle is connected to the distal end of the hose.

First, the high-pressure washing vehicle is stopped close to the area to be cleaned, such as a manhole in a sewer pipe, and then the hydraulic motor 19 of the drive device 18 is activated to rotate the turntable 12 and the hose is wound onto the hose reel 13. Direct the extension direction of the hose toward the area to be cleaned. At this time, the high pressure water pipe 34 and the hydraulic pipe 36 are connected to each swivel joint 33,
The turntable 12 is rotated around the turntable 35 as the center of rotation.
The hose reel 13 rotates integrally with the hose reel 13 without changing their relative positional relationship.

When the hydraulic motor 19 of the drive device 18 is stopped after the high-pressure water injection nozzle attached to the tip of the hose pulled out from the hose reel 13 is directed toward the area to be cleaned, the speed reducer 20 causes the power transmission direction to be aligned. Since it is self-locking in only one direction, even if an external force is applied to the turntable 12 or the hose reel 13, the turntable 12 and the hose reel 13 are held in the position when the hydraulic motor 18 is stopped.

Next, the dog clutch 25 is disengaged to allow the hose reel 13 to rotate freely, and the hose wound around the hose reel 13 is extended and the high-pressure water injection nozzle connected to the tip of the hose is passed through the manhole. It is inserted into the sewer pipe, and then the operation panel 15 is operated to start the engine installed in the engine pump chamber 1, thereby operating the plunger pump connected to the engine and pumping the tank chamber. The normal pressure water stored in the water tank in the water tank 2 is converted into high pressure water, and the water is pumped toward the operation deal chamber 3. The high-pressure water pumped toward the operation deal chamber 3 is connected to a swivel joint 33 and a high-pressure water pipe 3.
4. The water is force-fed through the swivel joint 27, the communication hole 24a provided in the support shaft 24, the hose connection part 28, and the hose to a high-pressure water injection nozzle, and is sprayed rearward from the injection nozzle. The high-pressure water injection nozzle advances inside the sewer pipe together with the hose while stirring the sludge inside the sewer pipe by jetting high-pressure water.

After the hose is automatically extended by a predetermined length, the hydraulic motor 31 is activated and the meshing clutch 25 is switched to the engaged state, and the driving force of the hydraulic motor 31 is applied to the small sprocket 30, the roller chain 32, the large sprocket 26, and the meshing It is transmitted to the support shaft 24 via the clutch 25 and rotates the hose reel 13.

By rotating the hose reel 13, the hose is wound back onto the hose reel 13, and sludge in the sewer pipe is washed and removed by jetting high-pressure water rearward from the high-pressure water jet nozzle.

Effects of the invention As can be understood from the above explanation, in the device of the invention, both the operation panel and the hose reel are arranged in parallel on the same turntable, so the extension direction of the hose reel can be adjusted. Regardless of the situation, you can operate the operation panel while checking the condition of the hose and the progress of cleaning work. Therefore, the work can be carried out efficiently regardless of the parking position of the high-pressure washing vehicle or the rotating direction of the hose reel.

Furthermore, according to the present invention, the hose reel can be freely rotated to extend the hose toward the desired cleaning target position without increasing the burden on the high-pressure water piping, so compared to conventional devices, , work efficiency is greatly improved. In addition, since a self-locking reducer is used in the power unit that rotates the hose reel, even if an external force is applied to the hose reel for some reason, the direction of the hose reel will not change and cleaning operations can be carried out safely. I can do it.

[Brief explanation of drawings]

FIG. 1 is a rear view of a high-pressure washing vehicle according to the present invention, FIG. 2 is a longitudinal sectional view of a turntable, and FIGS. 3 and 4 are a side view and a front view of a hose reel. FIG. 5 is a schematic side view of a conventional high-pressure washing vehicle. 12...Turntable, 13...Hose reel, 15...Operation panel, 18...Drive device, 20...
...Self-locking speed reducer, 31...Hydraulic motor, 33, 35...Swivel joint, 34...
...High pressure water piping, 36...Hydraulic piping.

Claims (1)

[Scope of utility model registration request] a turntable rotatably disposed at the rear of the vehicle; a hose reel disposed on the turntable and rotationally driven by a hydraulic motor; and a hose reel disposed on the turntable in parallel with the hose reel;
and an operation panel disposed with an operation surface facing the direction in which the hose is pulled out, a drive device that provides a turning motion to the turntable via a self-locking speed reducer, and a drive device disposed on the rotation axis of the turntable. A high-pressure water pipe that supplies high-pressure water to the hose reel through a swivel joint arranged on the rotary shaft, and a pressure that pumps hydraulic oil to the hydraulic motor through a swivel joint arranged on the rotation axis of the turntable. A high-pressure washing vehicle characterized by consisting of oil piping.