Anti-shifting device and active control anti-shifting system for oil tank of commercial vehicle

Abstract

The invention relates to the technical field of chassis oil tank systems, and provides an anti-movement device for an oil tank of a commercial vehicle, comprising: a limiting support device comprising a fixing frame, a strap and a protruding structure, the two ends of the strap being fixed to the two ends of the fixing frame and surrounding the oil tank; a pair of protruding structures used for limiting is arranged on the two sides, corresponding to each strap, of the outer portion of the oil tank. Each automatic pre-tightening device comprises a sheet-shaped pressure sensor, an electric transmission mechanism and a pre-tightening bolt, and the sheet-shaped pressure sensors are arranged between the protruding structures and the strap gaps; the pre-tightening bolt is connected with the end part of the fixing frame and the end part of the strap; and when the oil tank has a shifting trend and the pressure value of the sheet-shaped pressure sensor is greater than a set upper boundary value, the electric transmission mechanism controls the pre-tightening bolt to rotate, so that the end part of the fixing frame and the end part of the strap are close to each other, and the strap is tightened. According to the anti-play device and the active control anti-play system, the oil tank can be prevented from playing at a higher level.

Description

Technical Field

[0001] The present invention relates to the technical field of chassis oil tank systems, and in particular to an anti-movement device for an oil tank of a commercial vehicle and an active control anti-movement system. Background Art

[0002] At present, the front end of the main fuel tank of a commercial vehicle is a urea tank and its supporting device, and the rear end of the main fuel tank is a rear fender. The gap between the rear end of the main fuel tank and the rear fender is small, and an indicator light is provided on the rear fender adjacent to the rear end of the main fuel tank. The distance between the front and rear ends of the main fuel tank is particularly compact in some commercial vehicle models. Once the main fuel tank moves, the indicator light may be damaged at best, or the fuel tank may be damaged at worst.

[0003] In the related art, in order to solve the problem of oil tank movement, technicians in this field set more than one pair of fixed protrusions on the oil tank and tied the oil tank by connecting fastening belts. Each pair of fixed protrusions is used to limit the connecting fastening belt, and the oil tank is prevented from moving by bundling with a combination of fixed protrusions and connecting fastening belts.

[0004] However, after long-term use, the connections at both ends of the fixing protrusions and the connecting fastening belts may become loose, or the connecting fastening belts themselves may be deformed. This often causes the fuel tank to move after being installed for a period of time, thereby causing it to hit the rear fender, or the urea tank and its supporting device, resulting in adverse consequences. Summary of the invention

[0005] The present application provides an anti-movement device for a commercial vehicle fuel tank and an active control anti-movement system, which can prevent the fuel tank from moving at a higher level.

[0006] In a first aspect, an embodiment of the present application provides an anti-movement device for a commercial vehicle fuel tank, comprising:

[0007] The position limiting support device comprises a fixing frame, a hoop and a protruding structure, wherein the fixing frame is L-shaped and supports the oil tank; two ends of the hoop are fixed to two ends of the fixing frame and embrace the oil tank; a pair of protruding structures for position limiting are arranged on the outside of the oil tank corresponding to two sides of each hoop;

[0008] A plurality of automatic pre-tightening devices, each of which comprises a sheet pressure sensor, an electric transmission mechanism and a pre-tightening bolt, wherein the sheet pressure sensor is arranged between the protruding structure and the gap of the hoop; the pre-tightening bolt connects the end of the fixing frame and the end of the hoop; when the oil tank has a tendency to move and the pressure value of the sheet pressure sensor is greater than the set upper boundary value, the electric transmission mechanism controls the pre-tightening bolt to rotate, so that the end of the fixing frame and the end of the hoop are close to each other, thereby tightening the hoop.

[0009] In combination with the first aspect, in one embodiment, the pre-tightening bolt has a non-threaded section and a threaded section; the non-threaded section matches the end of the hoop, the threaded section matches the end of the fixing frame, and the protruding end of the pre-tightening bolt is coaxially arranged with one of the gears in the gear set, and when the gear rotates, the threaded section drives the end of the hoop to approach the end of the fixing frame.

[0010] In combination with the first aspect, in one embodiment, the electric transmission mechanism includes a motor, a gear pair and two spindles; the two spindles are respectively fixed to the ends of the fixing frame and the ends of the band; the pre-tightening bolt vertically penetrates the two spindles, and the spindle at the end of the band matches the non-threaded section, and the spindle at the end of the fixing frame matches the threaded section;

[0011] The motor is arranged at the bottom of the horizontal frame of the fixed frame; the gear pair comprises a driving gear and a driven gear, and the driven gear is coaxially fixed to the protruding end of the pre-tightening bolt; the motor drives the pre-tightening bolt to rotate through the driving gear and the driven gear.

[0012] In combination with the first aspect, in one embodiment, the anti-slip device further includes a controller, the controller is used to obtain the deceleration, fuel volume and slope of the current driving state of the vehicle, and obtain the set upper boundary value and the set lower boundary value of the current driving state by looking up the table according to the deceleration, fuel volume and slope;

[0013] When the pressure value of the sheet pressure sensor is greater than the set upper boundary value, the controller starts to tighten the strap through the motor, gear set and pre-tightening bolts until the pressure value of the sheet pressure sensor is equal to the set lower boundary value, and the motor stops.

[0014] In combination with the first aspect, in one embodiment, at least one of the two ends of each hoop is connected to the end of the fixing frame by a pre-tightening bolt;

[0015] The position limiting support device comprises more than two fixing frames and an equal number of hoops.

[0016] In combination with the first aspect, in one embodiment, when designing the raised structure, the force that the raised structure needs to withstand during braking is calculated based on the maximum capacity of the fuel tank, the density of the oil, the maximum absolute value of the vehicle's acceleration and the maximum safe slope of the vehicle; and the total design length of the raised structure is estimated based on the tear strength of the material of the raised structure.

[0017] In a second aspect, an embodiment of the present application provides an active control anti-drifting system for a commercial vehicle fuel tank, comprising:

[0018] A tampering warning light installed on the instrument panel;

[0019] A fuel level sensor disposed in the fuel tank is used to obtain fuel level data of the current driving status;

[0020] A slope sensor disposed outside the fuel tank is used to obtain the slope of the vehicle in the current driving state;

[0021] An acceleration sensor, used to obtain the absolute value of the acceleration of the current driving state;

[0022] The vehicle-mounted ECU is used to receive data from the oil level sensor, the inclination sensor, the acceleration sensor and all the sheet pressure sensors in the above-mentioned anti-slip device, and obtain the set upper boundary value and the set lower boundary value of the current driving state by looking up the table according to the oil level, inclination and acceleration absolute value data;

[0023] When the pressure value of any sheet pressure sensor is greater than the set upper boundary value, the on-board ECU controls the tampering warning light to flash, and the on-board ECU tightens the corresponding hoop through the motor, gear set and pre-tightening bolts until the pressure value of the corresponding sheet pressure sensor is equal to the set lower boundary value, the motor stops, and the tampering warning light stops flashing.

[0024] In combination with the second aspect, in one embodiment, the pre-tightening bolt has a non-threaded section and a threaded section; the non-threaded section matches the end of the hoop, the threaded section matches the end of the fixing frame, and the protruding end of the pre-tightening bolt is coaxially arranged with one of the gears in the gear set, and when the gear rotates, the threaded section drives the end of the hoop to approach the end of the fixing frame.

[0025] In combination with the second aspect, in one embodiment, the electric transmission mechanism includes a motor, a gear pair and two spindles; the two spindles are respectively fixed to the ends of the fixing frame and the ends of the band; the pre-tightening bolt vertically penetrates the two spindles, and the spindle at the end of the band matches the non-threaded section, and the spindle at the end of the fixing frame matches the threaded section;

[0026] The motor is arranged at the bottom of the horizontal frame of the fixed frame; the gear pair comprises a driving gear and a driven gear, and the driven gear is coaxially fixed to the protruding end of the pre-tightening bolt; the motor drives the pre-tightening bolt to rotate through the driving gear and the driven gear.

[0027] In combination with the second aspect, in one embodiment, at least one of the two ends of each hoop is connected to the end of the fixing frame by a pre-tightening bolt;

[0028] The position limiting support device comprises more than two fixing frames and an equal number of hoops.

[0029] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0030] 1. The anti-swaying device of the present application limits and binds the oil tank through a fixing frame, a hoop and a raised structure to prevent the oil tank from moving; the most critical thing is that, on this basis, a number of automatic pre-tightening devices are set to connect the end of the fixing frame and the end of the hoop, and the pressure between the raised structure and the hoop gap is monitored by a sheet pressure sensor to see whether it is normal. When it is abnormal, that is, there is a tendency of movement and the pressure value of the sheet pressure sensor is greater than the set upper boundary value, the motor controls the rotation of the pre-tightening bolt through a gear set to tighten the hoop, and when the oil tank has not moved but only has a tendency to move, the oil tank is prevented from moving at the root, especially for the situation where the limit support device has a certain service life, it can achieve a higher level of prevention of oil tank movement.

[0031] 2. The anti-slip device of the present application provides an ingenious electric transmission mechanism to realize pre-tightening movement at the end of the hoop and the end of the fixing frame. The electric transmission mechanism includes a motor, a gear pair and two spindles. The pre-tightening bolt vertically penetrates the two spindles, and the pre-tightening bolt is connected to one spindle without a thread (i.e., a through-hole through-connection), and the pre-tightening bolt is threadedly connected to the other spindle. The motor drives the driving gear to rotate, and the driving gear drives the driven gear to rotate, thereby driving the pre-tightening bolt to rotate, thereby driving the two spindles to approach each other, thereby achieving the purpose of tightening the hoop.

[0032] 3. The active control anti-drifting system of the present application obtains the absolute values ​​of the oil quantity, inclination and acceleration of the current driving state through the oil quantity sensor, inclination sensor and acceleration sensor. The on-board ECU looks up the table with the absolute values ​​of the oil quantity, inclination and acceleration to obtain the set upper boundary value and the set lower boundary value of the current driving state. When the pressure value of any sheet pressure sensor is greater than the set upper boundary value, the on-board ECU controls the flickering warning light to flash, and the on-board ECU actively controls the rotation of the motor. The motor tightens the corresponding strap through the gear set and the pre-tightening bolt until the pressure value of the corresponding sheet pressure sensor is equal to the set lower boundary value. The motor stops and the flickering warning light stops flashing. The anti-drifting system uniformly and comprehensively manages all straps and performs targeted pre-tightening, thereby achieving a higher level of fuel tank anti-drifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of a protruding structure and a hoop of an anti-movement device provided in an embodiment of the present application;

[0035] Figure 2A side view of a fuel tank, a raised structure and a band provided in an embodiment of the present application;

[0036] Figure 3 for Figure 1 Bottom view of

[0037] Figure 4 for Figure 1 A partial enlarged view of middle A;

[0038] Figure 5 for Figure 4 Bottom view of

[0039] Figure 6 A block diagram of an anti-tampering system provided in an embodiment of the present application;

[0040] In the figure: 1. oil tank; 2. raised structure; 3. hoop; 4. fixing frame; 5. driven gear; 6. pre-tightening bolt; 7. driving gear; 8. core shaft. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] The embodiment of the present application provides an anti-movement device for a commercial vehicle fuel tank, which can prevent the fuel tank from moving at a higher level, and solve the technical problem that the traditional technical solution for preventing the fuel tank from moving will still move after long-term use and then hit the rear fender or urea tank.

[0043] It is worth mentioning that the anti-movement device of the present application is not only for oil tanks, but also for various gas tanks, and can also be used to prevent the gas tanks from moving.

[0044] First, as Figures 1 to 5 As shown, the present application discloses an embodiment of an anti-movement device for a commercial vehicle fuel tank, wherein the anti-movement device comprises a limit support device and a plurality of automatic pre-tightening devices.

[0045] The position limiting support device includes a fixing frame 4, a band 3 and a protruding structure 2. The fixing frame 4 is an L-shaped steel structure, and the L-shaped steel structure supports the oil tank 1. The two ends of the band 3 are fixed to the two ends of the fixing frame 4 and surround the oil tank 1. The outside of the oil tank 1 is provided with more than one pair of protruding structures 2 for position limiting corresponding to both sides of the width of each band 3.

[0046] The fixing frame 4 is supported and loaded, the band 3 is tied and fixed, and the raised structure 2 further limits the movement of the band 3, and the combination prevents the oil tank 1 from moving. The raised structure 2 can improve the assembly efficiency. By adding the raised structure 2 to the oil tank 1, workers can quickly find the installation position of the band during assembly, thereby improving the assembly efficiency. The raised structure 2 reduces costs, and the installation position of the band can be located through the raised structure position, without the need for additional positioning marks.

[0047] The combination of the raised structure 2 and the band can reduce the risk of collision between the fuel tank and surrounding parts and reduce maintenance costs. Due to the presence of the raised structure 2, it is easier to locate the correct position of the band when inspecting and maintaining the fuel tank, thereby reducing the difficulty and cost of maintenance.

[0048] The band 3 is installed between the raised structures 2. On the one hand, these two raised structures 2 will serve as positioning references for workers during the assembly process to help them quickly find the correct installation position. On the other hand, the raised structures 2 increase the resistance to the relative movement between the band 3 and the fuel tank 1, preventing the fuel tank 1 from shaking during the driving of the car.

[0049] Among them, there are several automatic pre-tightening devices for connecting the end of the fixing frame 4 and the end of the hoop 3. Each automatic pre-tightening device includes a sheet pressure sensor, a motor, a gear set and a pre-tightening bolt 6. The sheet pressure sensor is set between the convex structure 2 and the gap between the hoop 3. When the oil tank does not move, the pressure value of the sheet pressure sensor is normal. When the oil tank has no tendency to move, the pressure value of the sheet pressure sensor will increase or decrease. By judging from the change in pressure value, it is judged that the oil tank has a tendency to move. The pre-tightening bolt connects the end of the fixing frame 4 and the end of the hoop 3; when the oil tank 1 has a tendency to move and the pressure value of the sheet pressure sensor is greater than the set upper boundary value, the motor controls the rotation of the pre-tightening bolt through the gear set to tighten the hoop 3.

[0050] It is worth noting that the automatic pre-tightening device of the present application is not for remedial action after movement occurs; rather, it is for pre-tightening when there is a tendency of movement, thereby fundamentally preventing the oil tank from moving.

[0051] The anti-swaying device of the present application limits and binds the oil tank 1 through the fixing frame 4, the band 3 and the protruding structure 2 to prevent the oil tank from moving; the most critical thing is that, on this basis, a number of automatic pre-tightening devices for connecting the end of the fixing frame 4 and the end of the band 3 are set, and the pressure between the protruding structure 2 and the gap of the band 3 is monitored by a sheet pressure sensor to see whether it is normal, and when it is abnormal, that is, there is a tendency of movement and the pressure value of the sheet pressure sensor is greater than the set upper boundary value, the motor controls the rotation of the pre-tightening bolt through the gear set to tighten the band 3, and when the oil tank 1 has not moved but only has a tendency of moving, the oil tank is prevented from moving at the root, especially for the situation where the limit support device has a little service life, it can achieve a higher level of prevention of oil tank movement.

[0052] Furthermore, in one embodiment, the pre-tightening bolt 6 has a non-threaded section and a threaded section.

[0053] The non-threaded section matches the end of the band 3, the threaded section matches the end of the fixing frame 4, and the protruding end of the pre-tightening bolt 6 is coaxially arranged with one of the gears in the gear set. When the gear rotates, the threaded section drives the end of the band 3 to approach the end of the fixing frame 4, thereby tightening the band 3 to achieve the purpose of tightening the oil tank 1.

[0054] like Figure 4 As shown, the cap end of the pre-tightening bolt is a non-threaded section, and the protruding end of the pre-tightening bolt, i.e., the part adjacent to the gear, is a threaded section.

[0055] In the anti-movement device of the present application, the pre-tightening bolt 6 is divided into a non-threaded section and a threaded section. The non-threaded section and the threaded section are matched with the end of the band 3 and the end of the fixing frame 4 respectively. The non-threaded section will idle, and the threaded section will drive the two ends to approach each other, thereby tightening the band 3, thereby achieving the purpose of tightening the oil tank 1, and preventing the oil tank 1 from moving when the oil tank 1 has a tendency to move.

[0056] like Figure 4 and Figure 5 As shown, further, in one embodiment, the electric transmission mechanism includes a motor, a gear pair and two spindles 8.

[0057] The two mandrels 8 are respectively fixed to the ends of the fixing frame 4 and the ends of the band 3, providing a basis for subsequent connection. The pre-tightening bolt 6 vertically penetrates the two mandrels 8, and specifically, the pre-tightening bolt 6 is vertical to the middle of the length of the two mandrels 8. The mandrel 8 at the end of the band 3 is matched with the non-threaded section, and the mandrel 8 at the end of the fixing frame 4 is matched with the threaded section.

[0058] Specifically, the fixing frame 4 is divided into a vertical frame and a horizontal frame, and the motor is arranged at the bottom of the horizontal frame of the fixing frame; the gear pair includes a driving gear 7 and a driven gear 5, and the driven gear 5 is coaxially fixed to the protruding end of the pre-tightening bolt; the driving gear 7 is arranged at the output end of the motor, and the motor drives the pre-tightening bolt to rotate through the driving gear 7 and the driven gear 5.

[0059] The anti-slip device of the present application provides an ingenious electric transmission mechanism to realize pre-tightening movement at the end of the hoop 3 and the end of the fixing frame 4. The electric transmission mechanism includes a motor, a gear pair and two spindles 8. The pre-tightening bolt 6 vertically penetrates the two spindles 8, and the pre-tightening bolt 6 is non-threadedly connected to one spindle 8 (i.e., connected by a through hole), and the pre-tightening bolt 6 is threadedly connected to the other spindle 8. The motor drives the driving gear to rotate, and the driving gear drives the driven gear to rotate, thereby driving the pre-tightening bolt to rotate, thereby driving the two spindles 8 to approach each other, thereby achieving the purpose of tightening the hoop.

[0060] Furthermore, in one embodiment, the anti-movement device also includes a controller, which is used to obtain the deceleration, oil level and slope of the vehicle's current driving state, wherein the deceleration can be obtained directly, the oil level can be obtained through an oil level sensor, and the slope can be obtained through a slope sensor.

[0061] The controller obtains the upper and lower boundary values ​​of the current driving state by looking up the table according to the deceleration, fuel volume and slope. Specifically, when the vehicle has different decelerations, different fuel volumes and different slopes, even if there is no tendency to move, the inertia force is different. Therefore, different upper and lower boundary values ​​need to be set for different current driving states.

[0062] Specifically, the upper boundary value and the lower boundary value are set by weighting the normal inertial extrusion force without a tendency to move that is measured in advance.

[0063] When the pressure value of the sheet pressure sensor is greater than the set upper boundary value, the controller starts to tighten the hoop 3 through the motor, gear set and pre-tightening bolts, so that the pressure value measured by the sheet pressure sensor will become smaller and smaller until the pressure value of the sheet pressure sensor is equal to the set lower boundary value, indicating that it has been fully tightened and the oil tank has no tendency to move, and the controller controls the motor to stop.

[0064] The anti-swaying device of the present application has a controller for obtaining the deceleration, fuel volume and slope of the vehicle's current driving state. The controller obtains a set upper boundary value and a set lower boundary value of the current driving state based on the deceleration, fuel volume and slope through a table lookup. Different upper and lower boundary values ​​are given for different states of the fuel tank. Compared with the set threshold value, the boundary value setting is more accurate, which can make the swaying trend judgment more precise and achieve the purpose of preventing swaying at a higher level.

[0065] Further, in one embodiment, at least one of the two ends of each band 3 is connected to the end of the fixing frame 4 by a pre-tightening bolt 6; specifically, the band 3 may be fixed at one end by a pre-tightening bolt 6, and the pre-tightening may be performed after the position limiting support device is used for a long time. The band 3 may also be fixed at both ends by a pre-tightening bolt 6, and the pre-tightening may be performed after the position limiting support device is used for a long time.

[0066] The position limiting support device comprises more than two fixing frames 4 and an equal number of hoops 3. Specifically, the fixing frames 4 can be two, three or four.

[0067] Furthermore, in one embodiment, when designing the raised structure 2, the force that the raised structure 2 needs to withstand during braking is calculated based on the maximum capacity of the fuel tank, the density of the oil, the maximum absolute value of the vehicle's acceleration, and the maximum safe slope of the vehicle; and the total design length of the raised structure 2 is estimated based on the tear strength of the material of the raised structure 2.

[0068] Specifically, the maximum absolute value of the vehicle's acceleration is the national standard value, 7m / s^2. The maximum safe inclination of the vehicle is also the national standard value, 16.5°.

[0069] Usually the density range of national standard diesel is 0.83~0.855g / ml, and the mass of 800L fuel tank is m=800×1000×0.83~0.855÷1000=664~684kg.

[0070] When the 800L tank brakes on flat ground, the maximum forward thrust of the tank is F = 664 ~ 684 × 7 = 4648 ~ 4788 N. The maximum force when braking on a slope is Fp = (4648 ~ 4788 N) / cos (16.5) = 6621 ~ 6820 N.

[0071] When the strap is loose, the raised structure 2 of the fuel tank has to withstand a force of 6621 to 6820N.

[0072] The tear strength of the material of the raised structure 2 is required to be ≥10N / mm, and the total design length of the raised structure is required to reach 6621~6820÷10=662.1~682mm.

[0073] When the fuel tank has two sections of straps, the total length is 682mm, with each section being 341mm.

[0074] When the fuel tank has three sections of straps, the total length is 684mm, with each section being 228mm.

[0075] Preferably, the hoop 3 comprises a steel belt and a cushion belt, the steel belt is located at the lower layer, the cushion belt is located at the upper layer, and the raised structure is more than three times the total height of the steel belt and the cushion belt.

[0076] In one example, the height of the raised structure is set to 15 mm (3 times the thickness of the hoop, the thickness of the steel belt is 1.8±0.1 mm, and the thickness of the cushion belt is 3±0.5 mm). The width of the raised structure is 27 mm (the hoop is 80 mm, and the raised width is 81 / 3=27 mm).

[0077] It is worth mentioning that the anti-movement device can also be used in gas tanks. When the anti-movement device is used in the gas tank, the limit support device is set as usual. However, the power source of the automatic pre-tightening device is realized by the gas tank and the solenoid valve. The gas tank and the solenoid valve drive the gears to rotate to realize the rotation of the pre-tightening bolts.

[0078] like Figure 6 As shown, in the second aspect, the present application also discloses an embodiment of an active control anti-drifting system for a commercial vehicle fuel tank, the anti-drifting system comprising a drifting warning light, a fuel level sensor, a tilt sensor, an acceleration sensor and a vehicle-mounted ECU.

[0079] Among them, the tampering warning light is set on the instrument panel.

[0080] The fuel level sensor is installed in the fuel tank and is used to obtain the fuel level data of the current driving status.

[0081] The slope sensor is installed outside the fuel tank and is used to obtain the slope of the vehicle in the current driving state.

[0082] The acceleration sensor is used to obtain the absolute value of the acceleration of the current driving state.

[0083] The on-board ECU signal is connected to the oil level sensor, inclination sensor, acceleration sensor and all the sheet pressure sensors in the above-mentioned anti-movement device. The on-board ECU is used to receive data from the oil level sensor, inclination sensor, acceleration sensor and all the sheet pressure sensors in the above-mentioned anti-movement device, and to obtain the set upper boundary value and the set lower boundary value of the current driving state according to the oil level, inclination and acceleration absolute value data by looking up the table.

[0084] When the pressure value of any sheet pressure sensor is greater than the set upper boundary value, the on-board ECU controls the tampering warning light to flash, and the on-board ECU tightens the corresponding hoop 3 through the motor, gear set and pre-tightening bolts until the pressure value of the corresponding sheet pressure sensor is equal to the set lower boundary value, the motor stops, and the tampering warning light stops flashing.

[0085] Specifically, when there are three straps 3 , if one of the straps 3 is abnormal, the corresponding anti-movement device is controlled to tighten the corresponding strap 3 .

[0086] The active control anti-drifting system of the present application obtains the absolute values ​​of the oil quantity, inclination and acceleration of the current driving state through the oil quantity sensor, inclination sensor and acceleration sensor. The on-board ECU obtains the set upper boundary value and the set lower boundary value of the current driving state by looking up the table with the absolute values ​​of the oil quantity, inclination and acceleration. When the pressure value of any sheet pressure sensor is greater than the set upper boundary value, the on-board ECU controls the flickering warning light to flash, and the on-board ECU actively controls the rotation of the motor. The motor tightens the corresponding strap 3 through the gear set and the pre-tightening bolt until the pressure value of the corresponding sheet pressure sensor is equal to the set lower boundary value. The motor stops and the flickering warning light stops flashing. The anti-drifting system uniformly and comprehensively manages all straps and performs targeted pre-tightening, thereby achieving a higher level of fuel tank anti-drifting.

[0087] Furthermore, the active control anti-drifting system of the present application is shown in Table 1 in one example:

[0088] Table 1

[0089]

[0090] When the detection number is 1, the pressure value detected by the sheet pressure sensor is greater than the set upper boundary value (734N) of the current driving state, that is, 737N>734N, indicating that the fuel tank 1 has a tendency to move, and the on-board ECU actively controls the motor to tighten the pre-tightening bolt and tighten the hoop.

[0091] The test times are 2 to 8, the pre-tightening bolts are gradually tightened and the hoop is gradually tightened.

[0092] Until the 9th detection time, the pressure value detected by the sheet pressure sensor is less than the set lower boundary value of the current driving state (244.67N), that is, 243N<244.67N, indicating that the fuel tank 1 has no tendency to move, the on-board ECU actively controls the motor to stop, and the movement warning light stops flashing.

[0093] Specifically, two adjacent tests are performed at a set time interval.

[0094] Furthermore, the active control anti-drifting system of the present application is shown in Table 2 in another example:

[0095] Table 2

[0096]

[0097] When the detection number is 1, the pressure value detected by the sheet pressure sensor is greater than the set upper boundary value (871N) of the current driving state, that is, 873N>871N, indicating that the fuel tank 1 has a tendency to move, and the on-board ECU actively controls the motor to tighten the pre-tightening bolt and tighten the hoop.

[0098] During the test times 2 to 7, the pre-tightening bolts are gradually tightened and the straps are gradually tightened.

[0099] Until the 8th detection, the pressure value detected by the sheet pressure sensor is less than the set lower boundary value of the current driving state (290.33N), that is, 287N<290.33N, indicating that the fuel tank 1 has no tendency to move, the on-board ECU actively controls the motor to stop, and the movement warning light stops flashing.

[0100] Furthermore, in one embodiment, the pre-tightening bolt 6 has a non-threaded section and a threaded section.

[0101] The non-threaded section matches the end of the band 3, the threaded section matches the end of the fixing frame 4, and the protruding end of the pre-tightening bolt 6 is coaxially arranged with one of the gears in the gear set. When the gear rotates, the threaded section drives the end of the band 3 to approach the end of the fixing frame 4, thereby tightening the band 3 to achieve the purpose of tightening the oil tank 1. Figure 4 As shown, the cap end of the pre-tightening bolt is a non-threaded section, and the protruding end of the pre-tightening bolt, i.e., the part adjacent to the gear, is a threaded section.

[0102] In the active control anti-movement system of the present application, the pre-tightening bolt 6 is divided into a non-threaded section and a threaded section. The non-threaded section and the threaded section are matched with the end of the band 3 and the end of the fixing frame 4 respectively. The non-threaded section will idle, and the threaded section will drive the two ends to approach each other, thereby tightening the band 3, thereby achieving the purpose of tightening the fuel tank 1, and preventing the fuel tank 1 from moving when the fuel tank 1 has a tendency to move.

[0103] like Figure 4 and Figure 5 As shown, further, in one embodiment, the electric transmission mechanism includes a motor, a gear pair and two spindles 8.

[0104] The two mandrels 8 are fixed to the ends of the fixing frame 4 and the end of the band 3, respectively, to provide a basis for subsequent connection. The pre-tightening bolt 6 vertically penetrates the two mandrels 8, and specifically, the pre-tightening bolt 6 is vertical to the middle of the length of the two mandrels. The mandrel 8 at the end of the band 3 is matched with the non-threaded section, and the mandrel 8 at the end of the fixing frame 4 is matched with the threaded section.

[0105] Specifically, the fixing frame 4 is divided into a vertical frame and a horizontal frame, and the motor is arranged at the bottom of the horizontal frame of the fixing frame; the gear pair includes a driving gear 7 and a driven gear 5, and the driven gear 5 is coaxially fixed to the protruding end of the pre-tightening bolt; the driving gear 7 is arranged at the output end of the motor, and the motor drives the pre-tightening bolt to rotate through the driving gear 7 and the driven gear 5.

[0106] The active control anti-slip system of the present application provides an ingenious electric transmission mechanism to realize pre-tightening movement at the end of the hoop 3 and the end of the fixing frame 4. The electric transmission mechanism includes a motor, a gear pair and two spindles 8. The pre-tightening bolt 6 vertically penetrates the two spindles 8, and the pre-tightening bolt 6 is non-threadedly connected to one spindle 8 (i.e., connected by a through hole), and the pre-tightening bolt 6 is threadedly connected to the other spindle 8. The motor drives the active gear to rotate, and the active gear drives the driven gear to rotate, thereby driving the pre-tightening bolt to rotate, thereby driving the two spindles 8 to approach each other, thereby achieving the purpose of tightening the hoop.

[0107] Further, in one embodiment, at least one of the two ends of each band 3 is connected to the end of the fixing frame 4 by a pre-tightening bolt 6; specifically, the band 3 may be fixed at one end by a pre-tightening bolt 6, and the pre-tightening may be performed after the position limiting support device is used for a long time. The band 3 may also be fixed at both ends by a pre-tightening bolt 6, and the pre-tightening may be performed after the position limiting support device is used for a long time.

[0108] The position limiting support device comprises more than two fixing frames 4 and an equal number of hoops 3. Specifically, the fixing frames 4 can be two, three or four.

[0109] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0110] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0111] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A commercial vehicle fuel tank anti-movement device, characterized in that: Include: The position limiting support device comprises a fixing frame (4), a band (3) and a protruding structure (2); the fixing frame (4) is L-shaped and supports the oil tank (1); the two ends of the band (3) are fixed to the two ends of the fixing frame (4) and surround the oil tank (1); a pair of protruding structures (2) for position limiting are arranged on the outside of the oil tank (1) corresponding to the two sides of each band (3); A plurality of automatic pre-tightening devices, each of which comprises a sheet-like pressure sensor, an electric transmission mechanism and a pre-tightening bolt (6), wherein the sheet-like pressure sensor is arranged between a protruding structure (2) and a gap between a band (3); the pre-tightening bolt connects an end of a fixing frame (4) and an end of a band (3); when the oil tank (1) has a tendency to move and the pressure value of the sheet-like pressure sensor is greater than a set upper boundary value, the electric transmission mechanism controls the pre-tightening bolt to rotate, so that the end of the fixing frame (4) and the end of the band (3) are close to each other, thereby tightening the band (3).

2. The anti-movement device for a commercial vehicle fuel tank according to claim 1, characterized in that: The pre-tightening bolt (6) has a non-threaded section and a threaded section; The non-threaded section matches the end of the band (3), the threaded section matches the end of the fixing frame (4), and the protruding end of the pre-tightening bolt (6) is coaxially arranged with one of the gears in the gear set. When the gear rotates, the threaded section drives the end of the band (3) to approach the end of the fixing frame (4).

3. The anti-movement device for a commercial vehicle fuel tank as claimed in claim 2, characterized in that: The electric transmission mechanism comprises a motor, a gear pair and two spindles (8); Two mandrels (8) are respectively fixed to the ends of the fixing frame (4) and the ends of the band (3); the pre-tightening bolt (6) vertically penetrates the two mandrels (8), and the mandrel (8) at the end of the band (3) is matched with the non-threaded section, and the mandrel (8) at the end of the fixing frame (4) is matched with the threaded section; The motor is arranged at the bottom of the horizontal frame of the fixed frame; the gear pair comprises a driving gear (7) and a driven gear (5), and the driven gear (5) is coaxially fixed to the protruding end of the pre-tightening bolt; the motor drives the pre-tightening bolt to rotate through the driving gear (7) and the driven gear (5).

4. The anti-movement device for a commercial vehicle fuel tank according to claim 1, characterized in that: The anti-slip device further comprises a controller, which is used to obtain the deceleration, fuel volume and slope of the current driving state of the vehicle, and obtain the set upper boundary value and the set lower boundary value of the current driving state by looking up the table according to the deceleration, fuel volume and slope; When the pressure value of the sheet pressure sensor is greater than the set upper boundary value, the controller starts to tighten the band (3) through the motor, the gear set and the pre-tightening bolts until the pressure value of the sheet pressure sensor is equal to the set lower boundary value, and the motor stops.

5. The anti-movement device for a commercial vehicle fuel tank as claimed in claim 1, characterized in that: At least one of the two ends of each hoop (3) is connected to the end of the fixing frame (4) via a pre-tightening bolt (6); The position-limiting support device comprises more than two fixing frames (4) and an equal number of hoops (3).

6. The anti-movement device for a commercial vehicle fuel tank as claimed in claim 1, characterized in that: When the protruding structure (2) is designed, the force that the protruding structure (2) needs to bear during braking is calculated based on the maximum capacity of the oil tank, the density of the oil, the maximum absolute value of the vehicle's acceleration, and the maximum safe inclination of the vehicle; Then, the total design length of the protruding structure (2) is estimated based on the tear strength of the material of the protruding structure (2).

7. An active control anti-drifting system for a commercial vehicle fuel tank, characterized in that: Include: A tampering warning light installed on the instrument panel; A fuel level sensor disposed in the fuel tank is used to obtain fuel level data of the current driving status; A slope sensor disposed outside the fuel tank is used to obtain the slope of the vehicle in the current driving state; An acceleration sensor, used to obtain the absolute value of the acceleration of the current driving state; The vehicle-mounted ECU is used to receive data from the oil level sensor, the inclination sensor, the acceleration sensor and all the sheet pressure sensors in the anti-drifting device as claimed in claim 1, and obtain the set upper boundary value and the set lower boundary value of the current driving state by looking up the table according to the oil level, inclination and acceleration absolute value data; When the pressure value of any sheet-shaped pressure sensor is greater than the set upper boundary value, the on-board ECU controls the tampering warning light to flash, and the on-board ECU tightens the corresponding hoop (3) through the motor, gear set and pre-tightening bolts until the pressure value of the corresponding sheet-shaped pressure sensor is equal to the set lower boundary value, the motor stops, and the tampering warning light stops flashing.

8. The active control anti-drifting system for a commercial vehicle fuel tank as claimed in claim 7, characterized in that: The pre-tightening bolt (6) comprises a non-threaded section and a threaded section; the non-threaded section matches the end of the band (3), the threaded section matches the end of the fixing frame (4), and the protruding end of the pre-tightening bolt (6) is coaxially arranged with one of the gears in the gear set, and when the gear rotates, the threaded section drives the end of the band (3) to approach the end of the fixing frame (4).

9. The active control anti-drifting system for a commercial vehicle fuel tank as claimed in claim 8, characterized in that: The electric transmission mechanism comprises a motor, a gear pair and two mandrels (8); the two mandrels (8) are respectively fixed to the ends of the fixing frame (4) and the ends of the band (3); the pre-tightening bolt (6) vertically penetrates the two mandrels (8), and the mandrel (8) at the end of the band (3) is matched with the non-threaded section, and the mandrel (8) at the end of the fixing frame (4) is matched with the threaded section; The motor is arranged at the bottom of the horizontal frame of the fixed frame; the gear pair comprises a driving gear (7) and a driven gear (5), and the driven gear (5) is coaxially fixed to the protruding end of the pre-tightening bolt; the motor drives the pre-tightening bolt to rotate through the driving gear (7) and the driven gear (5).

10. The active control anti-drifting system for a commercial vehicle fuel tank as claimed in claim 7, characterized in that: At least one of the two ends of each hoop (3) is connected to the end of the fixing frame (4) via a pre-tightening bolt (6); The position-limiting support device comprises more than two fixing frames (4) and an equal number of hoops (3).

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