Automobile overweight detection device for traffic transportation

Abstract

The invention relates to the technical field of traffic transportation safety, and provides an automobile overweight detection device for traffic transportation, which comprises a base, a fixed cavity is formed in the base, a quartz plate lower electrode is fixedly mounted at the bottom of the fixed cavity, and a piezoelectric quartz plate is fixedly mounted on the upper surface of the quartz plate lower electrode. And a quartz plate upper electrode is fixedly mounted on the upper surface of the piezoelectric quartz plate. By changing the opening state of the distribution valve, when the temperature is higher than the optimal temperature range of the piezoelectric quartz plate, the distribution valve enables the L pipe to be communicated with the upper oil pipe, and when the temperature is lower than the optimal temperature range of the piezoelectric quartz plate, the distribution valve enables the L pipe to be communicated with the lower oil pipe; and insulating heat-conducting hydraulic oil in the oil storage cavity is pumped into the fixed cavity through the oil inlet pipe, so that the piezoelectric quartz plate is ensured to be in an optimal temperature range, and the problem that the accuracy of automobile overweight detection is greatly reduced due to the fact that existing equipment cannot ensure that the quartz crystal is in a relatively proper working environment is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation safety, and in particular to a vehicle overweight detection device for transportation. Background Art

[0002] With the development of society, the types of transportation are becoming more and more diversified. Modern transportation modes mainly include railway transportation, road transportation, water transportation and air transportation. Among them, road transportation has always been an important part of transportation due to its strong adaptability. In practice, due to the large number of cars on the road every day, its sustainability is poor and it needs frequent maintenance. Some overweight vehicles will cause great damage to the road surface when driving on the road, especially when overweight vehicles pass through some bridges and roads. In the case of light, it will cause internal damage to the bridge body, and in the case of severe, it will even cause the bridge to collapse, causing significant economic losses and casualties.

[0003] The existing method usually uses dynamic weighing technology for overweight detection of automobiles. Although it has the advantages of rapid detection and no impact on traffic flow, it also has the disadvantage of relatively poor detection accuracy. Because temperature has a significant effect on the piezoelectric effect of quartz crystals. The piezoelectric effect of quartz crystals refers to the charge effect generated under the action of mechanical stress, and temperature changes will change the physical properties of quartz crystals, thereby affecting their piezoelectric properties. Existing equipment cannot ensure that the quartz crystal is in a more suitable working environment. When the ambient temperature rises or falls, it will affect the piezoelectric effect of the quartz crystal, resulting in a significant reduction in the accuracy of automobile overweight detection. Secondly, when there is moisture or snow on the surface of the weighing plate, the contact area and pressure distribution on the surface of the detection device will increase, and it will prevent the vehicle tires from directly contacting the load-bearing plate, resulting in the inability to correctly sense the pressure changes of the tires. Summary of the invention

[0004] The present invention provides a vehicle overweight detection device for transportation to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is as follows: A vehicle overweight detection device for transportation comprises a base, wherein a fixed cavity is provided inside the base, a quartz plate lower electrode is fixedly installed at the bottom of the fixed cavity, a piezoelectric quartz plate is fixedly installed on the upper surface of the quartz plate lower electrode, a quartz plate upper electrode is fixedly installed on the upper surface of the piezoelectric quartz plate, a temperature sensor is fixedly installed on the front and rear inner walls of the base, a sealing gasket is fixedly installed on the upper surface of the base, a pressure-bearing plate is slidably connected to the upper part of the base, a mounting cavity and two sliding grooves are provided inside the pressure-bearing plate, a driving motor is fixedly installed inside the mounting cavity, a driving wheel is fixedly connected to the output shaft of the driving motor, a sliding mechanism is provided inside the sliding groove, sealing baffles are provided at the front and rear of the base, a plurality of telescopic rods are fixedly installed on the lower surface of the sealing baffle, an oil inlet pipe and an oil return pipe are fixedly connected to the left side of the base, an oil pump is fixedly installed at the left end of the oil inlet pipe, and a heat dissipation mechanism is fixedly connected to the left side of the oil pump.

[0006] Preferably, the sliding mechanism includes a connecting plate, the bottom of the connecting plate is slidably connected to a sliding block, the left and right sides of the sliding block are fixedly connected to limiting blocks, the middle of the sliding block is threadedly connected to a threaded rod, the left end of the threaded rod is fixedly connected to a transmission wheel, a synchronous belt is transmission-connected between the transmission wheel and the drive wheel, the bottom of the connecting plate is fixedly connected to a permanent magnet, an electromagnet is arranged below the permanent magnet, and a scraper is fixedly connected between the two connecting plates.

[0007] Preferably, the oil return pipe comprises an L-tube, a distribution valve is fixedly mounted on the upper end of the L-tube, a lower oil pipe is connected to the left side of the distribution valve, and an upper surface of the distribution valve is connected to the upper oil pipe.

[0008] Preferably, the heat dissipation mechanism comprises an oil shell, an oil storage cavity is provided inside the oil shell, a heating plate is fixedly installed at the bottom of the oil storage cavity, a heat dissipation shell is fixedly connected to the upper surface of the oil shell, and a heat dissipation cavity is provided inside the heat dissipation shell.

[0009] Preferably, the oil storage cavity is connected to the oil pump and the heat dissipation cavity, the heat dissipation shell is made of heat-conducting material, and the right side of the oil shell is fixedly connected to the oil pump.

[0010] Preferably, the lower electrode and the upper electrode of the quartz plate are both adapted to the fixed cavity, the upper electrode and the fixed cavity are slidably connected and have good sealing, and the piezoelectric quartz plate is located at the center of the lower electrode and the upper electrode of the quartz plate.

[0011] Preferably, the pressure-bearing plate is adapted to the fixed cavity and has good sealing performance therebetween, and a notch is provided on the left side of the upper surface of the pressure-bearing plate, and the notch is adapted to the scraper.

[0012] Preferably, the lower end of the telescopic rod is fixedly connected to the base, and the sealing baffle is adapted to the connecting plate.

[0013] Preferably, the connecting plate is slidably connected to the sliding groove, the threaded rod is rotationally connected to the pressure plate, and the electromagnet is fixedly connected to the left end bottom of the sliding groove.

[0014] Preferably, the lower oil pipe is connected to the oil storage chamber, the upper oil pipe is connected to the heat dissipation chamber, and the L-tube, the lower oil pipe, the upper oil pipe and the oil inlet pipe are all made of heat-insulating materials.

[0015] The working principle and beneficial effects of the present invention are: 1. The present invention monitors the temperature of the insulating heat-conducting hydraulic oil inside the fixed cavity and around the piezoelectric quartz plate through a temperature sensor. When the temperature is higher than the optimal temperature range of the piezoelectric quartz plate, the distribution valve connects the L tube with the upper oil pipe; when the temperature is lower than the optimal temperature range of the piezoelectric quartz plate, the distribution valve connects the L tube with the lower oil pipe, and pumps the insulating heat-conducting hydraulic oil inside the oil storage cavity into the fixed cavity through the oil inlet pipe, thereby ensuring that the piezoelectric quartz plate is in the optimal temperature range, thereby solving the problem that the existing equipment cannot ensure that the quartz crystal is in a more suitable working environment, and when the ambient temperature increases or decreases, it will affect the piezoelectric effect of the quartz crystal, resulting in a greatly reduced accuracy of automobile overweight detection.

[0016] 2. The present invention drives the sealing baffle to move downward by shortening the telescopic rod, and the electromagnet is energized to generate a magnetic field that repels the permanent magnet, thereby moving the permanent magnet, the connecting plate and the scraper upward, and the lower surface of the scraper will be flush with the upper surface of the pressure plate. Then the driving motor is driven to rotate the driving wheel, and the driving wheel drives the transmission wheel to rotate through the synchronous belt, and the transmission wheel drives the threaded rod to rotate, so that the sliding block and the limit block drive the connecting plate and the scraper to move to the right, thereby scraping off the moisture, snow and some dust impurities on the upper surface of the pressure plate, thereby solving the problem that when there is moisture or snow on the surface of the existing weighing plate, the contact area and pressure distribution of the detection device surface will increase, and it will hinder the vehicle tire from directly contacting the load-bearing plate, resulting in the inability to correctly sense the pressure change of the tire.

[0017] 3. The present invention injects insulating heat-conducting hydraulic oil into the interior of the fixed cavity, thereby further ensuring that the piezoelectric quartz plate is in a centered state and is isolated from moisture, thereby reducing the influence of humidity on the piezoelectric quartz plate, and further ensuring that when a moving car passes over the upper surface of the pressure plate, the pressure plate will be subjected to pressure, so that the lower electrode of the quartz plate and the upper electrode of the quartz plate squeeze the piezoelectric quartz plate, and the piezoelectric quartz plate generates a piezoelectric effect to output an electric charge, making its detection accuracy more precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A half-section schematic diagram of the base of the present invention; Figure 3 A half-section schematic diagram of the heat dissipation mechanism of the present invention; Figure 4 A half-section schematic diagram of a pressure plate of the present invention; Figure 5 A half-section schematic diagram of the sliding groove of the present invention; Figure 6 It is a schematic diagram of the fixed cavity structure of the present invention.

[0020] In the figure: 1, base; 2, fixed cavity; 3, lower electrode of quartz plate; 4, piezoelectric quartz plate; 5, upper electrode of quartz plate; 6, temperature sensor; 7, sealing gasket; 8, pressure plate; 9, installation cavity; 10, sliding groove; 11, driving motor; 12, driving wheel; 13, sliding mechanism; 131, connecting plate; 132, sliding block; 133, limiting block; 134, threaded rod; 135, transmission wheel; 136, Synchronous belt; 137, permanent magnet; 138, electromagnet; 139, scraper; 14, sealing baffle; 15, telescopic rod; 16, oil inlet pipe; 17, oil return pipe; 171, L pipe; 172, distribution valve; 173, lower oil pipe; 174, upper oil pipe; 18, oil pump; 19, heat dissipation mechanism; 191, oil shell; 192, oil storage chamber; 193, heating plate; 194, heat dissipation shell; 195, heat dissipation chamber. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 6As shown, an embodiment of the present invention provides an overweight detection device for a vehicle used in transportation, comprising a base 1, a fixed cavity 2 is provided inside the base 1, a quartz plate lower electrode 3 is fixedly installed at the bottom of the fixed cavity 2, a piezoelectric quartz plate 4 is fixedly installed on the upper surface of the quartz plate lower electrode 3, a quartz plate upper electrode 5 is fixedly installed on the upper surface of the piezoelectric quartz plate 4, a temperature sensor 6 is fixedly installed on the front and rear inner walls of the base 1, a sealing gasket 7 is fixedly installed on the upper surface of the base 1, a pressure plate 8 is slidably connected to the upper part of the base 1, an installation cavity 9 and two sliding grooves 10 are provided inside the pressure plate 8, a drive motor 11 is fixedly installed inside the installation cavity 9, and the drive motor 1 The output shaft of the base 1 is fixedly connected with a driving wheel 12, a sliding mechanism 13 is arranged inside the sliding groove 10, sealing baffles 14 are arranged at the front and rear of the base 1, and a plurality of telescopic rods 15 are fixedly installed on the lower surface of the sealing baffle 14, an oil inlet pipe 16 and an oil return pipe 17 are fixedly connected to the left side of the base 1, an oil pump 18 is fixedly installed at the left end of the oil inlet pipe 16, and a heat dissipation mechanism 19 is fixedly connected to the left side of the oil pump 18, and the sliding mechanism 13 includes a connecting plate 131, a sliding block 132 is slidably connected to the bottom of the connecting plate 131, and a limiting block 133 is fixedly connected to the left and right sides of the sliding block 132, and a threaded rod 134 is threadedly connected to the middle of the sliding block 132. The left end of the threaded rod 134 is fixedly connected with a transmission wheel 135, and a synchronous belt 136 is connected to the transmission wheel 135 and the driving wheel 12. A permanent magnet 137 is fixedly connected to the bottom of the connecting plate 131, and an electromagnet 138 is arranged below the permanent magnet 137. A scraper 139 is fixedly connected between the two connecting plates 131. The oil return pipe 17 includes an L-tube 171, and a distribution valve 172 is fixedly installed on the upper end of the L-tube 171. The left side of the distribution valve 172 is connected with a lower oil pipe 173, and the upper surface of the distribution valve 172 is connected with an upper oil pipe 174. The heat dissipation mechanism 19 includes an oil shell 191, and an oil storage cavity 192 is opened inside the oil shell 191. The oil storage cavity A heating plate 193 is fixedly installed at the bottom of 192, and a heat dissipation shell 194 is fixedly connected to the upper surface of the oil shell 191. A heat dissipation cavity 195 is opened inside the heat dissipation shell 194. Its function is that when the present invention is used, the lower electrode 3 of the quartz plate and the upper electrode 5 of the quartz plate are connected to the corresponding data processing equipment of the existing dynamic weighing system. When a moving car passes over the upper surface of the pressure plate 8, the pressure plate 8 will be subjected to pressure, so that the lower electrode 3 of the quartz plate and the upper electrode 5 of the quartz plate squeeze the piezoelectric quartz plate 4, and the piezoelectric quartz plate 4 generates a piezoelectric effect and outputs an electric charge, which is collected and analyzed by the corresponding equipment of the dynamic weighing system, so as to determine whether the moving car is overweight.

[0023] Among them, the oil storage chamber 192 is connected with the oil pump 18 and the heat dissipation chamber 195, the heat dissipation shell 194 is made of heat-conducting material, the right side of the oil shell 191 is fixedly connected with the oil pump 18, the lower electrode 3 of the quartz sheet and the upper electrode 5 of the quartz sheet are both adapted to the fixed chamber 2, the upper electrode 5 of the quartz sheet and the fixed chamber 2 are slidingly connected and have good sealing, the piezoelectric quartz sheet 4 is located at the center position of the lower electrode 3 of the quartz sheet and the upper electrode 5 of the quartz sheet, and its function is to inject insulating heat-conducting hydraulic oil into the interior of the fixed chamber 2, while further ensuring that the piezoelectric quartz sheet 4 is in a centered state, it will isolate moisture from contact with it, thereby reducing the influence of humidity on the piezoelectric quartz sheet 4, and further ensure that when a moving car passes through the upper surface of the pressure plate 8, the pressure plate 8 will be subjected to pressure, so that the lower electrode 3 of the quartz sheet and the upper electrode 5 of the quartz sheet squeeze the piezoelectric quartz sheet 4, and the piezoelectric quartz sheet 4 generates a piezoelectric effect to output charge, making its detection accuracy more accurate.

[0024] Among them, the pressure plate 8 is adapted to the fixed cavity 2 and the sealing between them is good. A notch is opened on the left side of the upper surface of the pressure plate 8, and the notch is adapted to the scraper 139. The lower end of the telescopic rod 15 is fixedly connected to the base 1, and the sealing baffle 14 is adapted to the connecting plate 131. The connecting plate 131 is slidably connected to the sliding groove 10, and the threaded rod 134 is rotatably connected to the pressure plate 8. The electromagnet 138 is fixedly connected to the bottom of the left end of the sliding groove 10. Its function is to shorten the telescopic rod 15 to drive the sealing baffle 14 to move downward. The electromagnet 138 is energized to generate a magnetic field that repels the permanent magnet 137, thereby causing the permanent magnet 137, the connecting plate 131 and the scraper 139 to move upward. The lower surface of plate 139 will be flush with the upper surface of the pressure plate 8, and then the driving motor 11 will work to drive the driving wheel 12 to rotate, and the driving wheel 12 will drive the transmission wheel 135 to rotate through the synchronous belt 136, and the transmission wheel 135 will drive the threaded rod 134 to rotate, so that the sliding block 132 and the limit block 133 drive the connecting plate 131 and the scraper 139 to move to the right, thereby scraping off the moisture, snow and some dust impurities on the upper surface of the pressure plate 8, thereby solving the problem that when there is moisture or snow on the surface of the existing weighing plate, the contact area and pressure distribution of the surface of the detection device will increase, and it will hinder the vehicle tire from directly contacting the load-bearing plate, resulting in the inability to correctly sense the pressure changes of the tire.

[0025] Among them, the lower oil pipe 173 is connected to the oil storage chamber 192, the upper oil pipe 174 is connected to the heat dissipation chamber 195, the L tube 171, the lower oil pipe 173, the upper oil pipe 174, and the oil inlet pipe 16 are all made of heat-insulating materials. Their function is to monitor the temperature of the insulating heat-conducting hydraulic oil inside the fixed cavity 2 and around the piezoelectric quartz plate 4 through the temperature sensor 6. When the temperature is higher than the optimal temperature range of the piezoelectric quartz plate 4, the distribution valve 172 makes the L tube 171 and the upper oil pipe 174 open; when the temperature is lower than the optimal temperature range of the piezoelectric quartz plate 4, the distribution valve 172 opens the L tube 171 and the upper oil pipe 174 ... When the piezoelectric quartz plate 4 is in the optimal temperature range, the distribution valve 172 connects the L tube 171 with the lower oil pipe 173, and pumps the insulating heat-conducting hydraulic oil inside the oil storage chamber 192 into the fixed chamber 2 through the oil inlet pipe 16, thereby ensuring that the piezoelectric quartz plate 4 is in the optimal temperature range, thereby solving the problem that the existing equipment cannot ensure that the quartz crystal is in a more suitable working environment. When the ambient temperature rises or falls, it will affect the piezoelectric effect of the quartz crystal, resulting in a greatly reduced accuracy of vehicle overweight detection.

[0026] Working principle: The present invention is installed on the road surface, and the upper surface of the pressure plate 8 is flush with the road surface. Before using the present invention, inject a proper amount of insulating heat-conducting hydraulic oil into the oil storage cavity 192, the heat dissipation cavity 195, and the fixed cavity 2; When the present invention is used, the lower electrode 3 of the quartz plate and the upper electrode 5 of the quartz plate are connected to the corresponding data processing equipment of the existing dynamic weighing system. When the moving car passes through the upper surface of the pressure plate 8, the pressure plate 8 is subjected to pressure, so that the lower electrode 3 of the quartz plate and the upper electrode 5 of the quartz plate squeeze the piezoelectric quartz plate 4, and the piezoelectric quartz plate 4 generates a piezoelectric effect and outputs an electric charge, which is collected and analyzed by the corresponding equipment of the dynamic weighing system, so as to judge whether the moving car is overweight; During the weighing process, the temperature sensor 6 will monitor the temperature of the insulating heat-conducting hydraulic oil inside the fixed cavity 2 and around the piezoelectric quartz plate 4. When the temperature is higher than the optimal temperature range of the piezoelectric quartz plate 4, the distribution valve 172 is in a state where the L-tube 171 and the upper oil pipe 174 are connected and the lower oil pipe 173 is disconnected. The oil pump 18 works to pump the insulating heat-conducting hydraulic oil inside the oil storage cavity 192 into the fixed cavity 2 through the oil inlet pipe 16, and the insulating heat-conducting hydraulic oil with a higher temperature inside the fixed cavity 2 will enter the heat dissipation cavity 195 through the L-tube 171 and the upper oil pipe 174. The higher temperature insulating heat-conducting liquid will guide the temperature to the heat dissipation shell 194, and finally conduct the heat to the air, thereby completing the cooling and ensuring that the piezoelectric quartz plate 4 is in the optimal temperature range. The air flow and natural wind generated by the driving vehicle will accelerate the heat dissipation when blowing through the heat dissipation shell 194; when the temperature is lower than the optimal temperature range of the piezoelectric quartz plate 4, the distribution valve 172 is in a state where the L-tube 171 and the upper oil pipe 174 are not connected and are connected to the lower oil pipe 173, the heating plate 193 works to heat the insulating heat-conducting hydraulic oil inside the oil storage chamber 192 to the optimal temperature range, the oil pump 18 works to pump the insulating heat-conducting hydraulic oil inside the oil storage chamber 192 into the interior of the fixed chamber 2 through the oil inlet pipe 16, and the insulating heat-conducting hydraulic oil with a lower temperature inside the fixed chamber 2 will enter the interior of the oil storage chamber 192 through the L-tube 171 and the lower oil pipe 173, and then be heated by the working heating plate 193, thereby completing the temperature rise and ensuring that the piezoelectric quartz plate 4 is in the optimal temperature range; When there is moisture, snow and some dust impurities on the upper surface of the pressure plate 8, the telescopic rod 15 shortens and drives the sealing baffle 14 to move downward, and the electromagnet 138 is energized to generate a magnetic field that repels the permanent magnet 137, thereby causing the permanent magnet 137, the connecting plate 131 and the scraper 139 to move upward, and the lower surface of the scraper 139 will be flush with the upper surface of the pressure plate 8. Then the driving motor 11 starts to drive the driving wheel 12 to rotate, and the driving wheel 12 drives the transmission wheel 135 to rotate through the synchronous belt 136, and the transmission wheel 135 drives the threaded rod 134 to rotate, so that the sliding block 132 and the limit block 133 drive the connecting plate 131 and the scraper 139 to move to the right, thereby scraping off the moisture, snow and some dust impurities on the upper surface of the pressure plate 8.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle overweight detection device for transportation, comprising a base (1), a fixed cavity (2) is provided inside the base (1), a quartz plate lower electrode (3) is fixedly mounted on the bottom of the fixed cavity (2), a piezoelectric quartz plate (4) is fixedly mounted on the upper surface of the quartz plate lower electrode (3), a quartz plate upper electrode (5) is fixedly mounted on the upper surface of the piezoelectric quartz plate (4), and a temperature sensor (6) is fixedly mounted on the front and rear inner walls of the base (1), characterized in that: A sealing pad (7) is fixedly mounted on the upper surface of the base (1); a pressure plate (8) is slidably connected to the upper part of the base (1); a mounting cavity (9) and two sliding grooves (10) are provided inside the pressure plate (8); a driving motor (11) is fixedly mounted inside the mounting cavity (9); an output shaft of the driving motor (11) is fixedly connected to a driving wheel (12); a sliding mechanism (13) is provided inside the sliding groove (10); sealing baffles (14) are provided at the front and rear of the base (1); a plurality of telescopic rods (15) are fixedly mounted on the lower surface of the sealing baffle (14); an oil inlet pipe (16) and an oil return pipe (17) are fixedly connected to the left side of the base (1); an oil pump (18) is fixedly mounted on the left end of the oil inlet pipe (16); and a heat dissipation mechanism (19) is fixedly connected to the left side of the oil pump (18).

2. The vehicle overweight detection device for transportation according to claim 1, characterized in that: The sliding mechanism (13) comprises a connecting plate (131), the bottom of the connecting plate (131) is slidably connected to a sliding block (132), the left and right sides of the sliding block (132) are fixedly connected to limit blocks (133), the middle of the sliding block (132) is threadedly connected to a threaded rod (134), the left end of the threaded rod (134) is fixedly connected to a transmission wheel (135), a synchronous belt (136) is transmission-connected between the transmission wheel (135) and the driving wheel (12), the bottom of the connecting plate (131) is fixedly connected to a permanent magnet (137), an electromagnet (138) is arranged below the permanent magnet (137), and a scraper (139) is fixedly connected between the two connecting plates (131).

3. The vehicle overweight detection device for transportation according to claim 2, characterized in that: The oil return pipe (17) comprises an L-tube (171), a distribution valve (172) being fixedly mounted on the upper end of the L-tube (171), a lower oil pipe (173) being connected to the left side of the distribution valve (172), and an upper oil pipe (174) being connected to the upper surface of the distribution valve (172).

4. The vehicle overweight detection device for transportation according to claim 3, characterized in that: The heat dissipation mechanism (19) comprises an oil shell (191), an oil storage cavity (192) is provided inside the oil shell (191), a heating plate (193) is fixedly mounted on the bottom of the oil storage cavity (192), a heat dissipation shell (194) is fixedly connected to the upper surface of the oil shell (191), and a heat dissipation cavity (195) is provided inside the heat dissipation shell (194).

5. The vehicle overweight detection device for transportation according to claim 4, characterized in that: The oil storage cavity (192) is in communication with the oil pump (18) and the heat dissipation cavity (195); the heat dissipation shell (194) is made of a heat-conducting material; and the right side of the oil shell (191) is fixedly connected to the oil pump (18).

6. The vehicle overweight detection device for transportation according to claim 5, characterized in that: The quartz plate lower electrode (3) and the quartz plate upper electrode (5) are both adapted to the fixed cavity (2), the quartz plate upper electrode (5) is slidably connected to the fixed cavity (2), and the piezoelectric quartz plate (4) is located at the center of the quartz plate lower electrode (3) and the quartz plate upper electrode (5).

7. The vehicle overweight detection device for transportation according to claim 6, characterized in that: The pressure-bearing plate (8) is adapted to the fixed cavity (2); a notch is provided on the left side of the upper surface of the pressure-bearing plate (8); the notch is adapted to the scraper plate (139).

8. The vehicle overweight detection device for transportation according to claim 7, characterized in that: The lower end of the telescopic rod (15) is fixedly connected to the base (1), and the sealing baffle (14) is adapted to fit the connecting plate (131).

9. The vehicle overweight detection device for transportation according to claim 8, characterized in that: The connecting plate (131) is slidably connected to the sliding groove (10), the threaded rod (134) is rotationally connected to the pressure plate (8), and the electromagnet (138) is fixedly connected to the left end bottom of the sliding groove (10).

10. The vehicle overweight detection device for transportation according to claim 9, characterized in that: The lower oil pipe (173) is in communication with the oil storage chamber (192), the upper oil pipe (174) is in communication with the heat dissipation chamber (195), and the L-tube (171), the lower oil pipe (173), the upper oil pipe (174), and the oil inlet pipe (16) are all made of heat-insulating material.

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