JP3222851U - Pump freeze prevention system for vehicle sediment removal equipment - Google Patents

Abstract

An object of the present invention is to provide a vehicle sediment removal device that automatically drains a pump under a certain condition in accordance with a decrease in ambient temperature of a vehicle sediment removal device or an operating state, thereby preventing the pump from being damaged by freezing. A pump freeze prevention system is provided. A pump freeze prevention system 1 according to the present invention includes a temperature sensor 11 for detecting an ambient temperature of the vehicle sediment removal device, an operation state confirmation sensor 12 for confirming an operation state of the vehicle sediment removal device, A drain valve that takes in a temperature signal from the temperature sensor 11 and an operation state signal from the operation state confirmation sensor 12 and drains water in the pump unit when the ambient temperature is below a certain temperature and the operation state is in a resting state. And an open driving means 21. [Selection] Figure 6

Description

  The present invention relates to a pump freeze prevention system for a vehicle earth and sand removal device, and more specifically, the pump automatically drains water under a certain condition in accordance with a decrease in ambient temperature or an operating state of the vehicle earth and sand removal device. The present invention relates to a pump freeze prevention system for a vehicle earth and sand removal device that can prevent damage.

  The vehicle's earth and sand removal device is used to prevent the removal of soil and sand adhering to the wheels and body of the vehicle and other foreign substances adhering to the site when the construction vehicle leaves the site. This device removes earth and sand.

  There are various means for removing earth and sand, such as a method of passing through a puddle provided in the passage of a vehicle to drop the earth and sand, a method of rotating the wheels idly and blowing water to shake the earth and sand, etc. Exists.

  In this case, as a method of idling the wheel on the roll provided in the passage and shaking off the earth and sand, a wet type in which water is sprayed and the earth and sand are dropped simultaneously with the rotation of the wheel, and water is not used. There are two types of structure, dry type.

  The present invention relates to a pump anti-freezing system for a vehicle earth and sand removal device that prevents the pump from freezing in a structure that operates with the driving force of the wheel described above and uses a water injection pump.

  When the above-mentioned vehicle earth and sand removal device is installed in a cold region and actually used, the cleaning water collected in the pump freezes and the pump breaks when the winter temperature falls below freezing point. Will happen.

  In other words, to prevent damage to the pump due to freezing, it is necessary to open the pump valve on the day when freezing is anticipated and pay attention to the drainage in the pump. The water in the pump freezes and the expansion of the ice leads to damage to the pump.

  The applicant of the present application previously described in Japanese Patent Application Laid-Open No. 2004-228867 on the front wheel base, the rear wheel base, the central slope connecting the front wheel base and the rear wheel base, and the rear wheel base for entering the vehicle. Washing of water, etc., with a gantry body provided with a continual inlet side slope and an exit side slope for embarkation connected to the front wheel gantry, the front wheel gantry and the rear wheel driers provided on the front wheel gantry and the rear wheel gantry, respectively. A cleaning medium supply means for supplying a cleaning medium, and a tank for storing the medium and a pump; and the front wheel driving roller in conjunction with the rotational force of the rear wheel driving roller by the engine operation of the vehicle located on the rear wheel mount. A rotation interlocking means for rotating and driving the pump of the cleaning medium supply means; and a nozzle that is provided on each of the front wheel mount and the rear wheel mount and communicates with the cleaning medium supply means. A cleaning medium supply pipe for the vehicle body, and a vehicle body cleaning medium injection section that is disposed along the traveling direction of the vehicle with respect to the gantry body and communicates with the cleaning medium supply means. In addition, the vehicle mud washing apparatus is configured such that the tires of the vehicle and the vehicle body are muddy by injection of a cleaning medium such as water on the front and rear wheels of the vehicle on the rear wheel mount and the vehicle body of the vehicle. A device is proposed.

JP 2017-154615 A

  The present invention has been made in view of the above circumstances, and based on the technology of Patent Document 1, the pump automatically drains water under certain conditions according to the decrease in the ambient temperature and the operating state of the vehicle's sediment removal device. An object of the present invention is to provide a pump freeze prevention system for a vehicle earth and sand removal device that can prevent the pump from being damaged by freezing.

  The present invention includes a water tank for storing water for removing earth and sand and a drain valve, and takes in water from the water tank to supply water for injecting water to the wheels of the vehicle and the vehicle body. A pump freeze prevention system for a vehicle earth and sand removal device provided in a wet-type vehicle earth and sand removal device having a temperature sensor for detecting an ambient temperature of the vehicle and the earth and sand removal device; The operating state confirmation sensor for confirming the operating state of the earth and sand removal device, the temperature signal from the temperature sensor, and the operating state signal from the operating state confirmation sensor are taken in, the ambient temperature is below a certain temperature, and the operating state is in the dormant state. The main feature is that it has a drain valve opening drive means for draining water in the pump unit.

  According to the first aspect of the present invention, the automatic drainage of the pump is performed under a certain condition according to the decrease in the ambient temperature and the operating state of the vehicle's sediment removal device, and the vehicle can prevent the pump from being damaged by freezing. It is possible to realize and provide a pump freeze prevention system for the earth and sand removal device.

  According to the second aspect of the present invention, a temperature sensor that detects the ambient temperature of the vehicle's sediment removal device, an operation state confirmation sensor that confirms the operational state of the vehicle's sediment removal device, and a temperature signal from the temperature sensor. The operation state signal from the operation state confirmation sensor is fetched, and when the ambient temperature is below a certain temperature and the operation state is in a resting state, it is determined that the pump can be frozen, and an open drive signal is sent to the drain valve of the pump unit. The drainage valve is opened by opening the drainage valve to drain the water in the pump unit, and the drainage valve opening drive means having a power supply unit for supplying the required power is provided, and the same as the device according to claim 1. The vehicle's earth and sand removal device can automatically prevent the pump from being frozen and damaged by automatically draining the pump under certain conditions according to the decrease in ambient temperature and operating conditions of the vehicle's earth and sand removal device. It can be provided to achieve pumping antifreeze system location.

  According to the invention of claim 3, in the invention of claim 1 or 2, the operating state confirmation sensor is configured as a non-contact type using a hall element and a magnet, so that it can be operated with low power. It is possible to realize and provide a pump freeze prevention system for a vehicle sediment removal apparatus that can accurately detect the operating state of the vehicle sediment removal apparatus in a small size and not affected by an external environment.

  According to the invention of claim 4, in the invention of claim 2, since the solar cell that does not need to be replaced and hardly deteriorates is adopted as the power supply unit, Even in such a case, it is possible to realize and provide a pump freeze prevention system for a vehicle earth and sand removal device that can accurately perform the draining operation of the pump unit by the drain valve opening driving means.

  According to the invention of claim 5, in the invention of claim 1 or 2, the drain valve opening drive means has a changeover switch, and the ambient temperature is below a certain temperature or the operating state is in a resting state. When one of them is satisfied, a pump freeze prevention system for a vehicle earth and sand removal device that drains water from the pump unit can be realized and provided.

FIG. 1 is a schematic front view of a vehicle earth and sand removal device including a pump freeze prevention system according to an embodiment of the present invention. FIG. 2 is a partially enlarged schematic front view showing a part of a gantry and a pump unit of a vehicle sediment removal apparatus according to the present embodiment. FIG. 3 is a partially enlarged schematic plan view showing a part of the gantry and the pump unit of the vehicle earth and sand removing device according to the present embodiment. FIG. 4 is a partially enlarged schematic side view showing a part of a gantry and a pump unit of a vehicle sediment removal apparatus according to this embodiment. FIG. 5 is a schematic front view showing a tank of the vehicle earth and sand removing device according to the present embodiment. FIG. 6 is a block diagram showing a temperature sensor for operating the drain valve constituting the pump freeze prevention system according to the present embodiment, an operating state confirmation sensor, and a control system for the drain valve opening drive means. It is.

  The present invention is a pump freezing of a vehicle earth and sand removal device that can automatically prevent the pump from being frozen and damaged by automatically draining the pump under certain conditions according to the decrease in the ambient temperature of the vehicle and the operating condition of the earth and sand removal device. The purpose of providing a prevention system is to provide a water tank for storing water for removing earth and sand, and a drain valve, and take water from the water tank and inject water into the vehicle wheels and the vehicle body on the mount A pump freeze prevention system for a vehicle earth and sand removal device provided in a wet-type vehicle earth and sand removal device having a pump unit for supplying water for the temperature sensor for detecting an ambient temperature of the vehicle earth and sand removal device An operational state confirmation sensor for confirming an operational state of the vehicle's earth and sand removal device, a temperature signal from the temperature sensor, and an operational state signal from the operational state confirmation sensor Intake, when the ambient temperature is below a certain temperature, and the operation state is inactive, it is determined that the pump can be frozen, and an opening drive signal is sent to the drain valve of the pump unit to open the drain valve, and the pump unit The water drain valve opening drive means provided with the electric power part which performs the drainage of the inside and supplies the required power is realized.

  Hereinafter, a pump freeze prevention system of a vehicle earth and sand removal device according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a schematic configuration of a vehicle earth and sand removing device 51 including a pump freeze prevention system 1 according to an embodiment of the present invention.

  As shown in FIG. 1, the vehicle earth and sand removing device 51 includes a front wheel base 52, a rear wheel base 53, a front wheel base 52, and a rear wheel base 53 on which a front wheel W 1 and a rear wheel W 2 of a vehicle C such as a dump truck are placed. A central slope 54, an entrance-side slope 55 connected to the rear wheel mount 53 for entry of the vehicle C, and an exit-side slope 56 connected to the front wheel mount 52, on a ground G such as a construction site. The gantry main body 57 arranged, the front wheel driving roller 61 and the rear wheel driving roller 62 provided on the front wheel gantry 52 and the rear wheel gantry 53, a tank 81 (see FIG. 5) for storing a cleaning medium such as water, and a pump The front wheel drive is provided in conjunction with a cleaning medium supply means 64 that includes a unit 63 and supplies a cleaning medium, and a rotational force of a rear wheel drive roller 62 by an engine operation of the vehicle C located on the rear wheel mount 53. The roller 61 is rotated, and the rotation interlocking drive unit 65 for operating the pump unit 63 of the cleaning medium supply unit 64 and the front wheel mount 52 and the rear wheel mount 53 are provided to communicate with the cleaning medium supply unit 64, respectively. A cleaning medium supply pipe (not shown) having a nozzle and a cleaning medium for a vehicle body (not shown) having a nozzle arranged in the traveling direction of the vehicle C with respect to the gantry body 57 and communicating with the cleaning medium supply means 64. And an injection unit.

  The tires of the vehicle C and the sand removal of the vehicle body are removed by spraying the cleaning medium onto the tires of the front wheel W1 and the rear wheel W2 of the vehicle C on the front wheel mount 52 and the rear wheel mount 53 and the vehicle body of the vehicle C. It is configured to drop to the ground G side.

  In FIG. 1, reference numeral 71 denotes a guide rail portion arranged along the gantry body 57.

  Next, the tank 81 and the pump unit 63 constituting the pump freeze prevention system 1 according to the present embodiment will be described in detail with reference to FIGS.

  The pump unit 63 includes a pump main body 3 that takes in water, which is a cleaning medium from the tank 81, through the strainer 2, a vertical pipe 4 that stands vertically upward from the pump main body 3, and an upper end of the vertical pipe 4. The check valve 5 attached to the check valve 5, the branch pipe 6 attached to the lower part of the check valve 5, and the other end of the hose 7 having one end connected to the branch pipe 6 are connected to the ground G below the pump body 3. A water drain valve 8 made of, for example, an electromagnetic valve, is provided nearby.

  The pump unit 63 includes a rear wheel side pulley 62b attached to the drive shaft 62a of the rear wheel drive roller 62 on the rear wheel mount 53 side, and a pump side pulley 63b attached to the pump shaft 63a of the pump unit 63. The pump rotation drive mechanism 10 having the belt 9 wound around the rear wheel side pulley 62b and the pump side pulley 63b is provided, and the impeller of the pump body 3 rotates in conjunction with the rotation of the rear wheel drive roller 62. As a result of the pump operation, water from the tank 81 is sucked into the pump body 3, and water is pumped from the pump body 3 to the cleaning medium supply means 64 in conjunction with the rotation of the rear wheel drive roller 62. It is configured such that water is jetted from a nozzle jet port (not shown) toward the rear wheel W2 and the like of the vehicle C.

  In this case, when the rotational force of the rear wheel drive roller 62 increases, the water pressure of water increases and the injection pressure also increases.

  The tank 81 is preferably disposed below the horizontal line aa on the lower side of the check valve 5 shown in FIG.

In the pump freeze prevention system 1 according to this embodiment, as shown in FIGS. 2 and 4, an automatic water drain valve 19 is disposed on the rear side of the water drain valve 8. In this case, if the drain valve 8 is always opened, the water is drained from the automatic drain valve 19.
The automatic drain valve 19 contains a control system for the drain valve opening driving means shown in FIG.
In addition, it has the temperature sensor 11 shown in FIG. 3, the operation state confirmation sensor 12, and the drain valve opening drive means 21 for performing the opening drive with respect to the drain valve 8 and performing drain automatically.

The temperature sensor 11 detects the ambient temperature of the vehicle earth and sand removal device 51.
And the said operation state confirmation sensor 12 is the small electric power arrange | positioned in the non-contact state in the outer side vicinity of a pair of magnet Mg1, Mg2 attached to the drive shaft 62a of the said rear-wheel drive roller 62, and the magnet Mg1, Mg2. It is configured to be a non-contact type using a hall element 13 that is operable, small, and not influenced by the external environment, and detects the operating state of the vehicle's sediment removal device 51.

  As shown in FIG. 3, the pair of magnets Mg1 and Mg2 are arranged such that the N and S magnetic poles facing the hall element 13 are different from each other with respect to the drive shaft 62a and spaced apart by 180 degrees, for example. Yes.

  The Hall element 13 is an element that responds to a change in magnetic field, and when the drive shaft 62a rotates, the output signal is turned on and off whenever the polarity of the magnetic field by the magnets Mg1 and Mg2 changes. Or the continuation of the off signal, it is possible to confirm whether or not the earth and sand removal device 51 of the vehicle is in operation.

  As shown in FIG. 6, the drain valve opening drive means 21 includes a program memory 22 that stores an operation program of the pump freeze prevention system 1 according to the present embodiment, and a control unit 23 that controls each element by the operation program. An A / D converter 24 that converts the temperature signal from the temperature sensor 11 into a digital signal and sends it to the controller 23; and a detection signal (operating state signal) of the operating state confirmation sensor 12 is converted into a digital signal. A / D conversion unit 25 sent to the control unit 23, a temperature threshold information storage unit 26 storing temperature threshold information such as 0 degrees Celsius or less, which is a freezing state of the pump body 3, and the vehicle An operating state threshold information storage unit that stores in advance operating state threshold information such as 30 minutes of non-operating, 1 hour of non-operating, etc., in which the operating state of the earth and sand removing device 51 means a dormant state. 7, a drain valve opening drive unit 28 for opening and closing the draining valve 8 has.

Then, the control unit 23 refers to the temperature signal and temperature threshold information based on the operation program, and refers to the output signal and the operation state threshold information of the operation state confirmation sensor 12 so that the ambient temperature is a predetermined temperature or less. (For example, 0 degrees Celsius or less), and when the operating state is a resting state (for example, 30 or more non-operating) and it is determined that the pump can be frozen, the controller 23 controls the drain valve opening drive unit 28. A drain valve opening signal is sent out, and a drain valve opening drive signal is sent from the drain valve opening drive unit 28 to the drain valve 19 to automatically open the drain valve 8, and the pump unit 63. It is configured to drain water inside.
Depending on the conditions at the site where the pump freeze prevention system 1 according to the present embodiment is arranged, the pump unit can be used when the ambient temperature is equal to or lower than a certain temperature or the operation state is in a dormant state. It is also possible to employ a water drain valve opening drive means so as to drain water in 63.

  Further, the drain valve opening drive means 21 has a power supply unit 29 for supplying electric power necessary for the operation of the drain valve opening drive means 21 and electric power necessary for the opening / closing operation of the drain valve 8.

  As the power source 29, a solar cell that does not require replacement and hardly deteriorates is adopted.

  In addition, it is of course possible to use various batteries such as a storage battery, a nickel cadmium battery, and a lithium battery, a commercial power source, or a combination thereof.

  Next, a manual draining operation of the pump unit 63 in the pump freeze prevention system 1 according to the present embodiment will be described.

First, the water supply valve 82 of the tank 81 is closed, and then the water supply hose 83 to the pump unit 63 attached to the water supply valve 82 is removed.

  And while opening the drain valve 8 of the lower part of the pump unit 63, the drain plug (not shown) of the pump main body 3 is opened, and the pump unit 63 is drained.

  In addition, when returning to the original state after draining water, the drain plug of the pump body 3 is closed and the drain valve 8 at the lower part of the pump unit 63 is closed.

  Next, a hose 83 is attached to the water supply valve 82 of the tank 81 and the water supply valve 82 is opened.

  Then, the rear wheel W2 of the vehicle C is idly rotated, and the rear wheel driving roller 62 is rotated, for example, ten times.

  Thereby, it can return to the state which water shines in the original.

  Although not shown in the drawing, the operating state confirmation sensor 12 employs an infrared transmission / reception sensor and a reflection piece. From the infrared transmission / reception sensor, a small reflection piece attached to the drive shaft 62a of the rear wheel drive roller 62 is used. It is also possible to configure so that the operation of the earth and sand removing device 51 of the vehicle is confirmed by irradiating infrared rays, receiving the reflected wave and obtaining a detection signal.

  According to the pump freeze prevention system 1 of the present embodiment described above, the pump unit 63 can be operated under a certain condition in accordance with a decrease in the ambient temperature of the vehicle sediment removal device 51 and the operating state of the vehicle sediment removal device 51. Automatic drainage can be performed to prevent the pump unit 63 from being frozen and damaged.

  The anti-freezing system for pumps of the present invention can be suitably used as a soil removal device for wet-type vehicles in cold regions where the ambient temperature is low in winter and the possibility of freezing of the pump is large.

DESCRIPTION OF SYMBOLS 1 Pump freeze prevention system 2 Strainer 3 Pump main body 4 Vertical pipe line 5 Check valve 6 Branch pipe 7 Hose 8 Drain valve 9 Belt 10 Pump rotation drive mechanism part 11 Temperature sensor 12 Operation state confirmation sensor 13 Hall element 19 Automatic drain valve 21 valve opening drive means 22 program memory 23 control unit 24 A / D conversion unit 25 A / D conversion unit 26 temperature threshold value information storage unit 27 operating state threshold value information storage unit 28 drain valve valve opening drive unit 29 power supply unit 51 vehicle Sediment removal device 52 Front wheel mount 53 Rear wheel mount 54 Central slope 55 Inlet slope 56 Outlet slope 57 Mount body 61 Front wheel drive roller 62 Rear wheel drive roller 62a Drive shaft 62b Rear wheel pulley 63 Pump unit 63a Pump shaft 63b Pump side Pulley 6 Cleaning medium supply means 65 rotates interlocking drive unit 71 guide rail 81 tank 82 water supply valve 83 Hose C vehicle G ground Mg1 magnet Mg2 rear wheel magnet W1 wheel W2

Claims (5)

A water tank for storing water for removing soil and sand, a pump unit for supplying water for taking water from the water tank and for injecting water to the vehicle wheels and the vehicle body on the gantry, with a drain valve A pump freeze prevention system for a vehicle sediment removal apparatus provided in a wet vehicle sediment removal apparatus comprising:
A temperature sensor for detecting the ambient temperature of the vehicle's sediment removal device;
An operational state confirmation sensor for confirming the operational state of the vehicle's earth and sand removal device;
Takes in the temperature signal from the temperature sensor and the operation state signal from the operation state confirmation sensor, and when the ambient temperature is below a certain temperature and the operation state is in a dormant state, the drain valve opens to drain the pump unit. Means,
A pump freeze prevention system for a vehicle earth and sand removal device. A water tank for storing water for removing soil and sand, a pump unit for supplying water for taking water from the water tank and for injecting water to the vehicle wheels and the vehicle body on the gantry, with a drain valve A pump freeze prevention system for a vehicle sediment removal apparatus provided in a wet vehicle sediment removal apparatus comprising:
A temperature sensor for detecting the ambient temperature of the vehicle's sediment removal device;
An operational state confirmation sensor for confirming the operational state of the vehicle's earth and sand removal device;
The temperature signal from the temperature sensor and the operation state signal from the operation state confirmation sensor are taken in. When the ambient temperature is below a certain temperature and the operation state is in a resting state, it is determined that the pump can be frozen. A drain valve opening drive means comprising an electric power unit that sends an opening drive signal to the drain valve to open the drain valve, drains water in the pump unit, and supplies the required power,
A pump freeze prevention system for a vehicle earth and sand removal device.   3. The pump freeze prevention system for a vehicle sediment removal apparatus according to claim 1 or 2, wherein the operating state confirmation sensor is configured in a non-contact type using a hall element and a magnet.   3. The pump freeze prevention system for a vehicle earth and sand removal device according to claim 2, wherein the power supply unit uses a solar battery.   The drain valve opening drive means has a changeover switch to drain water in the pump unit when the ambient temperature is below a certain temperature or the operating state is satisfied. The pump freeze prevention system of the earth and sand removal apparatus of the vehicle of Claim 1 or 2 characterized by the above-mentioned.

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