Trailer-mounted moving device capable of nitrogen charging and boosting

Abstract

The present invention relates to a trailer-mounted moving device capable of nitrogen charging and boosting, wherein a nitrogen tank can be loaded on and unloaded from a trailer to improve convenience of loading, and wheel steering of the trailer in accordance with a towing position may be more easily controlled.

Description

Trailer-mounted mobile device capable of nitrogen charging and pressurization

[0001] The present invention relates to a trailer-mounted mobile device capable of nitrogen charging and pressurization, which improves the convenience of loading by enabling loading and unloading of a nitrogen tank on a trailer, and which enables easier control of the wheel steering of the trailer according to the towing position.

[0002] In general, nitrogen supply devices are widely used in various industrial fields, and are used to supply nitrogen to manufacturing processes such as aircraft, semiconductors, automobiles, and flat panel displays.

[0003] The majority of nitrogen-fueled trailers used in aircraft rely on imported equipment. While mobile nitrogen supply units (Korean Patent Publication No. 10-2004-0041994) have been disclosed, these technologies lacked separate lifting equipment, limiting transport using equipment like forklifts and cranes. Furthermore, nitrogen tanks had to be transported and loaded onto nitrogen-fueled trailers, which was inconvenient.

[0004] In addition, the conventional nitrogen-filled trailer (Korean Patent No. 10-1971338) discloses a trailer configuration that improves the convenience of loading, but there was a problem in that a pair of front wheels were connected to one axle of the wheel axle, making it difficult to steer the front wheels when a large load was applied to the trailer body.

[0005] Therefore, research is required on a nitrogen-filled trailer that increases the convenience of loading, enables easy steering of the wheels regardless of the load applied to the trailer, and has a control device for safely controlling the supply of nitrogen gas, thereby increasing safety and efficiency.

[0006] Korean Patent Publication No. 10-2004-0041994

[0007] Korean Patent No. 10-1971338

[0008] The present invention aims to improve the convenience of loading by enabling loading and unloading of a nitrogen tank onto a trailer using a hydraulic cylinder and a loading arm.

[0009] In addition, the present invention aims to facilitate steering of a trailer according to the displacement of a tow bar by separately providing a link part capable of steering a wheel.

[0010] In addition, the present invention aims to improve the stability of handling a nitrogen tank by providing a control unit that controls the operation of a trailer and the internal pressure of a nitrogen tank.

[0011] The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems to be solved by the present invention that are not mentioned herein will be clearly understood by a person having ordinary skill in the technical field to which the present invention pertains from the description below.

[0012] According to one embodiment of the present invention, a trailer-mounted moving device capable of nitrogen charging and pressurization comprises: a trailer body part having a receiving space for loading nitrogen tanks at the top and bottom, respectively, and a pressure control device for controlling the pressure of nitrogen gas supplied from a nitrogen tank at the front, and a tow bar for controlling the moving direction of the trailer; a nitrogen tank tray part provided at the top of the trailer body part to store a nitrogen tank; a hydraulic cylinder provided at the top of the trailer body part to transmit power to load the nitrogen tank tray part onto the trailer body part or unload it onto the ground; a loading arm part coupled with the hydraulic cylinder to rotate the nitrogen tank tray part at a preset angle; a wheel part provided at the bottom of the trailer body part, a pair of front wheels coupled with the tow bar, and two pairs of rear wheels respectively coupled to a support shaft extending from one side of the trailer body part; a wheel link part provided between the front wheels and the tow bar to control the moving direction of the front wheels according to the displacement of the tow bar; a nitrogen tank part for storing the nitrogen tank and rotating the trailer It can be characterized by including a control unit that controls the overall operation of loading onto a body part and supplying nitrogen gas from a nitrogen tank to the pressure control device by condensing it.

[0013] In addition, the nitrogen tank tray part according to one embodiment of the present invention may include a two-stage upper tray and a lower tray, wherein the upper tray and the lower tray are formed in a pair of semi-cylindrical shapes to surround the outer surface of the nitrogen tank, a support frame for storing the nitrogen tank, a fixing frame provided at one end of the support frame and having a fastening groove formed into which an inlet of the nitrogen tank is inserted and fastened to prevent movement of the nitrogen tank, one or more straps provided on a side of the support frame and configured to support the outer surface of the nitrogen tank, and a fastening part for storing a nitrogen tank in one of the pair of support frames and fixing the other support frame to form a cylindrical shape.

[0014] In addition, a loading arm according to one embodiment of the present invention may include a rotating link coupled with the hydraulic cylinder, and an arm frame having one end coupled with the rotating link and the other end coupled with the nitrogen tank tray, and operating in response to the rotating motion of the rotating link.

[0015] In addition, a hydraulic cylinder according to an embodiment of the present invention may be characterized in that it is operated by a motor provided at the bottom of the trailer body, and the motor is configured with a rechargeable battery.

[0016] In addition, a wheel link unit according to an embodiment of the present invention may include a first wheel link unit provided on one side of one of a pair of front wheels, a second wheel link unit provided on one side of the tow bar and coupled with the first wheel link unit, a third wheel link unit provided on one side of the other of the pair of front wheels, and a fourth wheel link unit provided between the pair of front wheels and coupled with the first wheel link unit and the third wheel link unit.

[0017] The present invention has the effect of improving the convenience of loading by enabling loading and unloading of a nitrogen tank onto a trailer using a hydraulic cylinder and a loading arm.

[0018] In addition, the present invention has the effect of facilitating steering of the trailer according to the displacement of the tow bar by separately providing a link part capable of steering the wheels.

[0019] In addition, the present invention has a control unit that controls the operation of the trailer and the internal pressure of the nitrogen tank, thereby having the effect of improving the stability of handling the nitrogen tank.

[0020] FIG. 1 is a drawing showing the overall shape of a trailer-mounted mobile device capable of nitrogen charging and pressurization according to an embodiment of the present invention.

[0021] Figure 2 is a drawing showing a state of unloading a nitrogen tank according to an embodiment of the present invention.

[0022] FIG. 3 is a plan view of a trailer-mounted mobile device capable of nitrogen charging and pressurization according to an embodiment of the present invention.

[0023] FIG. 4 is a drawing showing the configuration of a nitrogen tank tray according to an embodiment of the present invention.

[0024] Figure 5 is a drawing showing the configuration of a wheel part according to one embodiment of the present invention.

[0025] FIG. 6 is a drawing illustrating a trailer-mounted mobile device capable of nitrogen charging and pressurization according to another embodiment of the present invention.

[0026] Specific details, including the problems to be solved, means of solving them, and effects of the invention, are included in the embodiments and drawings described below. The advantages and features of the present invention, and methods for achieving them, will become clearer with reference to the embodiments described below in detail, along with the accompanying drawings.

[0027] Hereinafter, the present invention will be described in more detail with reference to the attached drawings.

[0028]

[0029] FIG. 1 is a drawing showing the overall shape of a trailer-mounted mobile device capable of nitrogen charging and pressurization according to an embodiment of the present invention, FIG. 2 is a drawing showing a state of unloading a nitrogen tank according to an embodiment of the present invention, FIG. 3 is a drawing showing a plane of a trailer-mounted mobile device capable of nitrogen charging and pressurization according to an embodiment of the present invention, FIG. 4 is a drawing showing the configuration of a nitrogen tank tray part according to an embodiment of the present invention, FIG. 5 is a drawing showing the configuration of a wheel part according to an embodiment of the present invention, and FIG. 6 is a drawing showing a trailer-mounted mobile device capable of nitrogen charging and pressurization according to another embodiment of the present invention.

[0030]

[0031] Referring to FIG. 1, a trailer-mounted mobile device (1000) capable of nitrogen charging and pressurization according to an embodiment of the present invention may include a trailer body (100), a nitrogen tank tray (120), a hydraulic cylinder (130), a loading arm (140), a wheel (150), a wheel link (160), and a control unit (170).

[0032] The trailer body (100) can form a receiving space so that nitrogen tanks can be loaded at the top and bottom, respectively. A pressure control device (110) capable of controlling the pressure of nitrogen gas supplied from the nitrogen tank can be provided at the front of the trailer body (100).

[0033] Referring to FIG. 3, the pressure control device (110) may be configured to include a housing (111), a control instrument panel (112), a pressure control unit (113), and an operating valve unit (114).

[0034] The housing (111) can protect internal components from external impact.

[0035] Additionally, the control panel (112) can externally display the high pressure side pressure, low pressure side pressure, and pressure inside the nitrogen tank.

[0036] The pressure control unit (113) can be configured to communicate with the pressure booster and relief valve provided inside the housing (111) to selectively reduce or increase the high pressure side pressure and the low pressure side pressure. The pressure booster controls the pressure of the nitrogen gas according to a command received from the pressure control unit (113), and when the pressure inside the pressure booster drops below a preset pressure, a booster inside the pressure booster reduces the space inside the pressure booster using the same principle as a piston, thereby increasing the pressure of the nitrogen gas.

[0037] In addition, the relief valve can automatically open and release nitrogen gas when the pressure inside the booster device exceeds a preset pressure, thereby preventing the pressure of the gas inside the booster device from increasing.

[0038] The operating valve unit (114) may be composed of an exhaust valve, a high-pressure supply valve, a booster operating valve, and a low-pressure supply valve. High-pressure nitrogen and low-pressure nitrogen can be charged by the on / off operation of the operating valve unit (114).

[0039] In addition, a hose storage unit may be further provided on the side of the pressure control device (110). It may include a high-pressure automatic hose reel and a low-pressure automatic hose reel that are used differently depending on the pressure of the gas. More specifically, the high-pressure automatic hose reel and the low-pressure automatic hose reel are combined on both sides of the pressure control device (110), and the high-pressure hose and the low-pressure hose are used depending on the required pressure, and after use, the hose can be configured to be automatically reeled back by an elastic body provided on each hose reel.

[0040] In addition, a pressure distribution valve unit may be further provided to condense nitrogen gas supplied from a nitrogen tank and supply it to a pressure control device (110). The pressure distribution valve unit may be configured to communicate with the nitrogen tank to supply nitrogen gas in one direction, and to condense the supplied nitrogen gas and supply it to the pressure control device (110).

[0041] Next, a tow bar (153) that rotates together with the trailer's wheel axle to control the direction of movement may be provided at the front of the trailer body (100).

[0042] A nitrogen tank tray (120) may be provided on the upper part of the trailer body (100). The nitrogen tank tray (120) may be composed of two stages: an upper tray and a lower tray. More specifically, according to one embodiment, the upper tray may be composed of a support frame (121), a fixed frame (122), a strap (123), and a fastening part (124).

[0043] Referring to Fig. 4, the support frame (121) is formed in a pair of semi-cylindrical shapes to surround the outer surface of the nitrogen tank, thereby allowing the nitrogen tank to be stored in the internal space. The pair of support frames (121) can be connected to each other by a hinge that rotates 90 degrees.

[0044] A fixed frame (122) can be provided at one end of the support frame (121). A fastening groove (122a) is formed on the plate-shaped body so that the inlet of a nitrogen tank can be inserted, and the nitrogen tank can be inserted into the fastening groove (122a) to prevent the flow of the nitrogen tank.

[0045] The strap (123) may be provided on the side of the support frame (121). It may be provided at the top, middle, and bottom of the support frame (121) and configured to support the outer surface of the nitrogen tank.

[0046] A fastening member (124) may be provided on one side of the support frame (121). One of the pair of support frames (121) may be opened to accommodate a nitrogen tank inside, and the support frame (121) may be shielded and fastened in a cylindrical shape.

[0047] The lower tray may be configured to have the same shape as the upper tray, and the upper tray and the lower tray may be configured to be detachably coupled to each other.

[0048] The upper trays are provided in multiple numbers symmetrically on the left and right sides, and nitrogen tanks can be stored in each of the upper trays on the left and right sides. The lower trays are also provided in multiple numbers symmetrically on the left and right sides, and a total of four nitrogen tanks can be loaded onto the trailer body (100).

[0049] In addition, a buffer member may be further provided on one side of the nitrogen tank tray section (120) so as to be configured to alleviate impact with the ground when the nitrogen tank tray section (120) is lowered vertically to the ground.

[0050] The nitrogen tank tray (120) can be configured in various shapes to improve the convenience of storing and loading the nitrogen tank.

[0051] According to another embodiment, the nitrogen tank tray (120) may be configured so that the upper tray slides on the trailer body (100). Referring to FIG. 6, rollers and rails are mounted on the lower end of the upper tray, so that when a nitrogen tank is loaded, the nitrogen tank slides along the rail to the upper end of the trailer body (100), and the position of the upper tray can be fixed with a fixing pin.

[0052] Referring to Fig. 2, a plurality of hydraulic cylinders (130) may be provided symmetrically on the upper side of the trailer body (100). The hydraulic cylinders (130) may be combined with a loading arm (140) to be described below, and may transmit power to load the nitrogen tank tray (120) horizontally on the trailer body (100) or unload it vertically toward the ground.

[0053] In addition, a motor (131) may be further provided at the bottom of the trailer body (100). The hydraulic cylinder (130) is operated by the motor (131), and the motor (131) is configured with a rechargeable battery and can transmit power to the hydraulic cylinder (130).

[0054] The loading arm (140) is provided at the top of the trailer body (100) and can be combined with the hydraulic cylinder (130). More specifically, the loading arm (140) can include a rotation link (141) and an arm frame (142).

[0055] The rotary link (141) is coupled to one end of the hydraulic cylinder (130) and can be rotated at a preset angle from the trailer body (100) by the operation of the hydraulic cylinder (130). More specifically, when the hydraulic cylinder (130) is coupled to the central axis of the rotary link (141) and the hydraulic cylinder (130) is operated, the rotary link (141) that is folded horizontally on the trailer body (100) is rotated to one side (vertically).

[0056] The above-mentioned rotary link (141) may be configured in a boomerang shape bent at a certain angle, or in a crossed X shape (e.g., scissor lift) having a central rotary contact point, and the design can be changed in various forms.

[0057] One end of the arm frame (142) is connected to the upper end of the rotary link (141), and the other end is connected to the nitrogen tank tray section (120), so that the arm frame (142) can be loaded horizontally on the trailer body section (100) or moved downward vertically while supporting the end of the nitrogen tank tray section (120) in response to the rotary motion of the rotary link (141).

[0058] The wheel unit (150) may be provided at the bottom of the trailer body unit (100). The wheel unit (150) may be composed of a pair of front wheels (151) and two pairs of rear wheels (152). The front wheels (151) may be coupled to a tow bar (153), and the rear wheels (152) may be coupled to a support shaft extending to one side from the bottom of the trailer body unit (100), respectively. A shock absorber may be separately attached to the upper portion of the rear wheels (152) to absorb shock when the trailer moves.

[0059] A wheel link (160) may be provided between the front wheel (151) and the tow bar (153). More specifically, the wheel link (160) may include a first wheel link (161), a second wheel link (162), a third wheel link (163), and a fourth wheel link (164).

[0060] The first wheel link (161) is provided on one side of a pair of front wheels (151) and can control the movement direction of the front wheels (151).

[0061] The second wheel link (162) is provided on one side of the tow bar (153) and can be combined with the first wheel link (161). Power can be transmitted to the first wheel link (161) depending on the movement direction of the tow bar (153).

[0062] The third wheel link (163) is provided on one side of the other of the pair of front wheels (151) and can control the direction of movement of the front wheel (151).

[0063] The fourth wheel link (164) is provided between a pair of front wheels (151), and one end is connected to the first wheel link (161), and the other end is connected to the third wheel link (163), so that the direction of the front wheel (151) can be controlled according to the direction of movement of the tow bar (153).

[0064] Referring to Fig. 5, when the tow bar (153) is rotated to the left, the second wheel link (162) connected to the tow bar (153) pulls the first wheel link (161) connected to the right front wheel (151a), thereby rotating the right front wheel (151a) to the right.

[0065] And, the fourth wheel link (164) connected to the first wheel link (161) pulls the third wheel link (163) connected to the left front wheel (151b), causing the right front wheel (151a) to rotate in the same direction as the rotation angle.

[0066] Accordingly, depending on the displacement of the tow bar (153), the right front wheel (151a) of the pair of front wheels (151) is pulled in the A direction, and the left front wheel (151b) is pushed in the B direction, so that even if a large load is applied to the trailer body (100), the rotation of the wheel unit (150) is easily controlled.

[0067] The control unit (170) may be provided on one side of the trailer body (100). When the nitrogen tank is stored in the nitrogen tank tray (120), the entire operation of loading onto the trailer body (100) and condensing the nitrogen gas in the nitrogen tank and supplying it to the pressure control device (110) can be controlled.

[0068] For example, an inclination sensor that detects the inclination angle with respect to the ground is provided at the bottom of the trailer body (100), and the angle of the loading arm (140) can be controlled by increasing or decreasing the expansion amount of the hydraulic cylinder (130) based on the sensed inclination information.

[0069] The control unit (170) may be configured to load and move a nitrogen tank, and to condense and distribute the gas in the nitrogen tank by providing various types of sensors (temperature sensors, pressure sensors, vibration detection sensors, inclination sensors, etc.) at preset locations of the control unit (170), monitor sensing data collected from the sensors through a wired or wireless communication network, and transmit the collected sensing data to a preset terminal of the task manager (an electronic terminal capable of wireless or wired communication, such as a smartphone, tablet PC, PC, or laptop) using a server, etc., so that the sensing data can be checked.

[0070] Here, the sensor provided in the control unit extracts real-time sensing data (temperature value, pressure value, vibration value, slope value, etc.) at preset intervals, generates histogram distribution data of the extracted sensing data, and analyzes the distribution data of the histogram of the generated sensing data to determine the reliability of the real-time sensing data. However, if the average value (Aerr) calculated by [Mathematical Formula 1] below is greater than the preset limit value (Serr), a fault diagnosis is performed to determine that an error has occurred in the real-time sensing data collected from the sensor provided in the control unit, and the fault diagnosis can be transmitted to the administrator's preset terminal.

[0071]

[0072] [Mathematical Formula 1]

[0073]

[0074] Here, Aerr is the average error of the histogram distribution data for each single sensor, Taver is the overall average of the histogram distribution data for each single sensor, Paver is the partial average of the histogram distribution data for n sensing data sensed by a single sensor, and Tσ is the overall standard deviation of the histogram distribution data for each single sensor.

[0075]

[0076] More specifically, Taver is the overall average of histogram distribution data for each single sensor, and means the value calculated by calculating the overall average of histogram distribution data generated for each single sensor over a preset period (e.g., 1 minute, 10 minutes, 30 minutes, 1 hour, 1 day, etc.), and Tσ means the value calculated by calculating the overall standard deviation of histogram distribution data for each single sensor over a preset period (e.g., 1 minute, 10 minutes, 30 minutes, 1 hour, 1 day, etc.).

[0077] In addition, Paver is a partial average of histogram distribution data for n single images among single sensing data generated during a preset period (e.g., 1 minute, 10 minutes, 30 minutes, 1 hour, 1 day, etc.), and in the process of collecting real-time sensing data collected from a preset location within the control unit, sensing data of a single sensor and histogram distribution data for the sensing data are generated a preset number of times (n times), and the average of the histogram distribution data for the preset number of times (n times) is calculated, so it can be referred to as a partial average because it corresponds to the average of some histogram distribution data.

[0078] At this time, if the estimated mean is calculated with 95% confidence using some averages, the estimated mean (μ) is It has a range.

[0079] Therefore, the average error (Aerr), which is the difference between the upper or lower limit of the estimated average (μ) and the overall average (Taver), can be calculated as in [Mathematical Formula 1].

[0080] Therefore, the fact that the average error (Aerr) calculated by [Mathematical Formula 1] is greater than the preset limit error (Serr) means that there is a very high possibility that the real-time sensing data collected through the preset sensor in the control unit is being input incorrectly due to a sensor failure. Therefore, when the condition is satisfied, the collected real-time sensing data can be judged as unreliable (failure diagnosis).

[0081] Meanwhile, fault diagnosis can compare the average value (Aerr) calculated by [Mathematical Formula 1] with a preset limit value (Serr) to determine whether there is an error in real-time sensing data.

[0082] For example, in the case of performing a fault diagnosis of a temperature sensor by providing a temperature sensor inside a control unit, the temperature inside the control unit is measured through the temperature sensor provided inside the control unit to determine whether the measured temperature is outside a preset range, whether real-time temperature sensing data shows a pattern that is periodically repeated within a preset section size, whether the temperature around the control unit is measured to determine whether the measured temperature is outside a preset range, and whether the ratio of the sensor's operating time and non-operating time is analyzed to determine whether the ratio is outside a preset ratio range, and if at least one of the conditions is satisfied, it can be determined that an error has occurred in the real-time sensing data.

[0083] Below, the specific details of the error judgment methods are explained in detail.

[0084] First, in order to measure the temperature of the control unit and determine whether the measured temperature is out of the preset range, a separate temperature sensor is installed within a preset distance from the temperature sensor installed inside the control unit, and the temperature of the control unit can be monitored in real time through the temperature sensor. This utilizes the technical principle that the heating temperature is maintained within the allowable range (preset heating temperature range) if the temperature sensor inside the control unit is operating normally. If the heating is excessive or there is no heating at all, it can be assumed that it is overloaded or not operating at all. In such cases, it can be determined that an error has occurred in the temperature sensor installed inside the control unit, and this can be assumed to mean that an error has occurred in the real-time sensing data.

[0085] Next, in order to determine whether there is an error in the real-time sensing data, it is possible to monitor whether the real-time sensing data shows a pattern that is periodically repeated within a preset interval size. This utilizes the technical principle that if a foreign substance is introduced into the control unit where the sensor is located, the introduced foreign substance may cause the sensing data values ​​to be repeatedly output in a specific pattern within the preset interval size. In this case, the preset interval size can be determined according to [Mathematical Formula 2] below.

[0086] [Equation 2]

[0087] Arange = {(Taver + Dmax) - (Taver - Dmax)}*0.3

[0088] Arange is the preset interval size, Taver is the overall average over the preset period, and Dmax is the maximum deviation over the preset period.

[0089] For example, if the overall average for a preset period is 70 and the maximum deviation is 20, Arange is 12, so if values ​​that are repeatedly output periodically within a range where the difference between the maximum and minimum values ​​does not exceed 12 (e.g., similar values ​​such as 52, 62, 52, 62, 53, 62, 52, 63 are repeatedly output), it can be assumed that a foreign substance has entered the control unit where the sensor is located, causing an error in the real-time sensing data.

[0090] Next, in the case where a humidity sensor that measures humidity is provided inside the control unit, in order to measure the humidity inside the control unit and determine whether the measured humidity exceeds a preset value, an external humidity sensor is separately provided within a preset distance from the control unit where the humidity sensor is located, and the humidity measured simultaneously with the humidity sensor inside the control unit can be monitored in real time through the external humidity sensor. This utilizes the technical principle that if moisture enters the control unit, it will operate abnormally. If the humidity sensed by the humidity sensor provided inside the control unit exceeds the preset value compared to the external humidity sensor, it can be assumed that moisture has entered the control unit. Therefore, in this case, it can be determined that there is a problem with the measurement environment that measures the humidity sensor provided inside the control unit, which can be assumed to be an error in the real-time sensing data.

[0091] Finally, by analyzing the ratio of the operating time and non-operating time of the preset sensor installed inside the control unit, it is possible to determine whether the ratio is outside the preset ratio range, and based on the result, it can be determined that an error has occurred in the real-time sensing data.

[0092] For example, if a vibration measurement sensor installed inside the control unit is set to collect data every 0.1 seconds for power saving, the ratio of operating time to non-operating time is 10:1, but if the ratio is reversed to 1:10 or changes to a significantly different ratio (e.g., a ratio change of 30% or more) as a result of analysis through real-time monitoring, it can be determined that there is a malfunction of the vibration measurement sensor and an error has occurred in the real-time vibration sensing data.

[0093] As such, in one embodiment of the present invention, when performing a fault diagnosis, it is possible to determine whether there is an error in real-time sensing data by considering all of the multiple fault diagnosis methods, and the final determination can be made as a Stotal value that reflects all of the multiple fault diagnosis methods as in [Mathematical Formula 3] below.

[0094] [Equation 3]

[0095] Stotal = W1*Raver + W2*Rtem + W3*Rrep + W4*Rhum + W5*Rrat

[0096] Here, Stotal is the sum of multiple error judgment values, Raver is the error judgment value derived by comparing the average value (Aerr) calculated by [Mathematical Formula 1] with the preset limit value (Serr) (one value between 0 and 1 depending on whether there is an error), Rtem is the value that determines whether there is an error depending on whether the temperature is out of the preset range (one value between 0 and 1 depending on whether there is an error), Rrep is the value that determines whether there is an error depending on whether a repeating pattern appears (one value between 0 and 1 depending on whether there is an error), Rhum is the value that determines whether there is an error depending on whether the humidity is out of the preset range (one value between 0 and 1 depending on whether there is an error), Rrat is the value that determines whether there is an error by analyzing the ratio of the operating time and the non-operating time (one value between 0 and 1 depending on whether there is an error), W1 is the Raver item weight, W2 is the Rtem item weight, W3 is the Rrep item weight, W4 is the Rhum item weight, and W5 is the Rrat item weight, respectively. It means.

[0097] For example, if Stotal is 4 or more, it can be preset that there is an error in the real-time sensing data, and if the heating temperature is a very important parameter, W2 can be preset to 3, and W1, W3, W4, and W5 can all be preset to 1.

[0098] Under these conditions, if the results of monitoring errors according to multiple fault diagnosis methods are 1 for Raver, 1 for Rtem, 0 for Rrep, 0 for Rhum, and 0 for Rrat, then Stotal becomes 4, so it can be determined that there is an error in the real-time sensing data.

[0099]

[0100] Although the embodiments of the present invention have been described with limited examples and drawings, the embodiments of the present invention are not limited to the described embodiments, and various modifications and variations are possible based on this description by those skilled in the art. Therefore, the embodiments of the present invention should be understood solely by the scope of the claims set forth below, and all equivalent or equivalent modifications thereof are deemed to fall within the scope of the present invention.

[0101] 1000, 2000: Trailer-mounted mobile device capable of nitrogen charging and pressurization

[0102] 100: Trailer body

[0103] 110: Pressure control device 111: Housing

[0104] 112: Control panel 113: Pressure control unit

[0105] 114: Operating valve section

[0106] 120: Nitrogen tank tray 121: Support frame

[0107] 122: Fixed frame 122a: Fastening groove

[0108] 123: Strap 124: Fastener

[0109] 130: Hydraulic cylinder 131: Motor

[0110] 140: Loading arm 141: Rotating link

[0111] 142: Dark Frame

[0112] 150: Wheel 151: Front wheel

[0113] 152: Rear wheel 153: Tow bar

[0114] 160: Wheel link part 161: First wheel link part

[0115] 162: Second wheel link 163: Third wheel link

[0116] 164: 4th wheel link

[0117] 170: Control unit

Claims

1. A trailer body having a storage space for loading nitrogen tanks at the top and bottom, a pressure control device for controlling the pressure of nitrogen gas supplied from the nitrogen tank at the front, and a towing bar for controlling the direction of movement of the trailer; A nitrogen tank tray section provided on the upper part of the trailer body for storing a nitrogen tank; A hydraulic cylinder provided on the upper part of the trailer body to transmit power to load the nitrogen tank tray onto the trailer body or unload it onto the ground; A loading arm unit coupled with the above hydraulic cylinder and rotating the nitrogen tank tray unit at a preset angle; A wheel unit provided at the bottom of the trailer body, wherein a pair of front wheels are connected to the tow bar and two pairs of rear wheels are connected to a support axle extending from one side of the trailer body; A wheel link provided between the front wheel and the tow bar, which controls the movement direction of the front wheel according to the displacement of the tow bar; A trailer-mounted mobile device capable of nitrogen charging and pressurization, comprising a control unit that controls the overall operation of storing a nitrogen tank, loading it onto the trailer body, and condensing nitrogen gas in the nitrogen tank and supplying it to the pressure control device.

2. In paragraph 1, The above nitrogen tank tray section, It consists of two upper trays and two lower trays. The upper tray and lower tray are formed into a pair of semi-cylindrical shapes to surround the outer surface of the nitrogen tank, and serve as a support frame for storing the nitrogen tank; A fixed frame having a fastening groove formed at one end of the above support frame into which the inlet of the nitrogen tank is inserted and fastened, thereby preventing the flow of the nitrogen tank; One or more straps provided on the side of the above support frame and configured to support the outer surface of the nitrogen tank; A trailer-mounted mobile device capable of nitrogen charging and pressurization, comprising a fastening member that stores a nitrogen tank in one of a pair of support frames and fastens the other support frame to form a cylindrical shape.

3. In paragraph 1, The above loading arm part, A rotating link coupled with the above hydraulic cylinder; A trailer-mounted mobile device capable of nitrogen charging and pressurization, comprising an arm frame, one end of which is coupled to the above-mentioned rotary link, and the other end of which is coupled to the above-mentioned nitrogen tank tray, and which operates in response to the rotational motion of the above-mentioned rotary link.

4. In paragraph 1, The above hydraulic cylinder, It is operated by a motor provided at the bottom of the trailer body. A trailer-mounted mobile device capable of nitrogen charging and pressurization, characterized in that the above motor comprises a rechargeable battery.

5. In paragraph 1, The above wheel link part, A first wheel link provided on one side of a pair of front wheels; A second wheel link portion provided on one side of the above tow bar and coupled with the first wheel link portion; A third wheel link provided on one side of the other of a pair of front wheels; A trailer-mounted mobile device capable of being nitrogen-filled and pressurized, comprising a fourth wheel linkage provided between a pair of front wheels and coupled to a first wheel linkage and a third wheel linkage.

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