A static car scale

Abstract

The present invention relates to a static automobile scale, which includes an approach, a scale panel, bolts, a lifting lug, a round shaft, nuts, a positioning seat, a frame, a steel plate, a foundation, a conical pressure head, a top cone, a lock nut, an adjustment sleeve, a sensor, a lifting sleeve, a locking nut, a hydraulic cylinder, a control cone sleeve, a speed regulating valve, a manual reversing valve, a relief valve and a jack. The threaded end of the round shaft passes through the lifting lug hole and the inner hole of the control cone sleeve and passes through the hole at the other end of the lifting lug. The hydraulic cylinder is placed on the foundation steel plate, the lifting sleeve stud is fastened in the threaded hole of the hydraulic cylinder piston rod, the hydraulic cylinder piston rod is connected to the lifting sleeve, the sensor is connected to the lifting sleeve, the adjustment sleeve is connected to the upper part of the sensor, the top cone is connected to the adjustment sleeve, and the hydraulic cylinder is fixed to the steel plate by bolts; the conical pressure head is connected to the hole below the scale panel; the lead screw is connected to the flat threaded hole in the frame; the technical solution has a simple structure, is firm and reliable, reduces maintenance time, improves work efficiency, ensures measurement accuracy, and stabilizes the weighing amount.

Description

Technical Field

[0001] The invention relates to a static automobile scale, belonging to the technical field of automobile transportation weighing and metering. Background Art

[0002] Existing truck scales are essentially electromechanical electronic scales, consisting of multiple scale panels, upper and lower load cells, load cells, main and limit stops, weighing instruments, a metering control system, and a receipt printing system. Truck scales are used for third-level trade settlements, with an accuracy error within ±0.5%. Because the scale panel is completely supported by the load cells and cannot be obstructed under no-load conditions, the vehicle's movement on and off the scale causes violent, irregular shaking, which impacts significantly with the screw limiters. This can cause the cement foundation to sink over time, severely wear the load cell contacts, reducing their lifespan and weighing accuracy, and cause localized deformation of the scale panel. Therefore, a new solution is urgently needed to address these technical issues. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the prior art and provides a static automobile scale. The technical solution has a simple structure, is firm and reliable, has a low manufacturing cost, reduces maintenance time, improves operating efficiency, ensures measurement accuracy, and stabilizes the weighing volume.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a static automobile scale, comprising a guideway, a scale panel, bolts, lifting ears, a round shaft, nuts, a positioning seat, a frame, a steel plate, a foundation, a conical pressure head, a top cone, a lock nut, an adjustment sleeve, a sensor, a lifting sleeve, a locking nut, a hydraulic cylinder, a control cone sleeve, a speed regulating valve, a manual reversing valve, a relief valve and a jack, the threaded end of the round shaft passes through the lifting ear hole and the inner hole of the control cone sleeve, passes through the hole at the other end of the lifting ear, and is fastened by a nut; the hydraulic cylinder is placed on the foundation steel plate, the lifting sleeve stud is fastened in the threaded hole of the hydraulic cylinder piston rod, the hydraulic cylinder piston rod is connected to the lifting sleeve, the sensor is connected to the lifting sleeve, the adjustment sleeve is connected to the top of the sensor, the top cone is connected to the adjustment sleeve, and the hydraulic cylinder is fixed to the steel plate by bolts; the conical pressure head is connected to the hole below the scale panel; the lead screw is connected to the flat threaded hole in the frame, and the ferrule is connected to the lead screw and the frame is welded to the steel plate.

[0005] As an improvement of the present invention, the circular shaft, lifting ear and control cone sleeve form component one, the hydraulic cylinder, foundation, steel plate, lifting sleeve and hydraulic cylinder form component two, and the top cone stud and adjustment sleeve form component three.

[0006] As an improvement of the present invention, the static scale further includes a positioning seat dovetail groove, all circular shafts are arranged in the positioning seat dovetail groove, and the control cone sleeve is provided with gaps in the conical surfaces at both ends of the dovetail groove.

[0007] A method for installing a static vehicle scale, comprising the following steps:

[0008] Step 1: Place four jacks steadily on the base steel plate, lift the first scale panel horizontally and place it on the four jacks and make sure it is stable; Step 2: Place the lifting lugs on the workbench, align the conical surfaces of the two control cone sleeves, and align the control cone sleeve holes with the lifting lug holes;

[0009] Step 3: Insert the threaded end of the round shaft into the lifting ear hole and the inner hole of the control cone sleeve, and then pass it out from the other end hole of the lifting ear, and then tighten the nut. In this way, assemble the other round shafts, lifting ears and control cone sleeves to complete the assembly, which is called component one;

[0010] Step 4: Pass four bolts through the through holes of the scale panel and the lifting lugs, and fasten the four components to the bottom of the scale panel with nuts. Note that the short side of the scale panel close to the guideway is installed parallel to the two circular axes of the two components, and the two circular axes of the two components at the middle connection position are installed perpendicular to the short side of the scale panel.

[0011] Step 5: Place the four locating seats in the preset fixed positions of the foundation steel plate, align the dovetail groove with the direction of the circular axis, ensure the gap between the approach and the scale panel, lift the first scale panel, and manually adjust all the control cone sleeves to both sides of the circular axis. Place four jacks on the edge of the locating seats for safety protection. The height of the jacks should be lower than the distance from the top corner of the dovetail groove to the steel plate. After lifting the first scale panel, slowly lower it so that the circular axis of component 2 falls smoothly into the dovetail grooves of the four locating seats and is in full contact. The control cone sleeves are in the conical surfaces at both ends of the dovetail groove with a certain gap. In this way, the first scale panel is supported and positioned by the combination of component 1 and the locating seats. Remove the lifting equipment;

[0012] Step 6: Move the four jacks to the basic steel plates in the middle and at the exit. The height of the four jacks is greater than the height of the locating seats. Lift the second scale panel and place it on the four jacks. Fasten component one to the exit position of the second scale panel. The circular axis of component one is parallel to the short side of the scale panel. Only one component one and a locating seat are installed at the connection position of the scale panel. Place the two locating seats on the steel plate and align them with the circular axis of component one. Release the four jacks at the same time. The middle position of the scale panel is fully connected. The circular axis of component one below the exit position of the second scale panel is fully implemented in the dovetail groove of the locating seat. At this point, the two scale panels of the static truck scale are installed in place. Use electric welding to weld the locating seat firmly to the steel plate and remove the jacks.

[0013] Step 7: Insert all cone pressure heads into the mounting holes below the scale panel and secure them firmly. Select a support position on the scale panel at random and place a jack next to the positioning seat. This will not affect subsequent operations and does not apply force. It also serves as a safety measure.

[0014] Step 8: Place the hydraulic cylinder on the base steel plate, tighten the jacking sleeve stud into the threaded hole of the hydraulic cylinder piston rod, and then tighten the lock nut, which is called component 2. Then put the lower contact of the sensor into the inner hole of the jacking sleeve;

[0015] Step 9: Screw the top cone stud to the bottom of the threaded hole of the adjusting sleeve. Do not tighten the top cone locknut. This is called component three. Put the adjusting sleeve optical hole on the sensor contact.

[0016] Step 10: Slowly move the assembly consisting of the hydraulic cylinder, jacking sleeve, sensor, adjustment sleeve, and top cone, called the large assembly, to the bottom of the cone pressure head and hold it steady. Hold the adjustment sleeve with your hand and rotate the top cone to raise it so that the cone head is in full contact with the surface of the inner conical hole of the cone pressure head. Note that the center of the cone pressure head and the large assembly are in a straight line. Use a marker to draw a straight line mark on the surface of the top cone and the cone pressure head. Then reverse the top cone once and align the straight line marks so that there is a certain gap between the cone head and the cone pressure head. Then draw a line on the steel plate to determine the position of the hydraulic cylinder threaded hole. After the above process is completed, apply force to the jack at this point and lift the scale panel until the large assembly is moved out of the inner conical hole of the cone pressure head as a whole.

[0017] Step 11: Remove component 2, sensor, and component 3 and gently place them on the steel plate. Drill and process four threaded holes for the hydraulic cylinder according to the markings on the steel plate. Tighten the locknut of component 3, making sure the straight line marks are straight, and install the sealing ring in the groove of the top cone.

[0018] Step 12: Move component 2 to the processed threaded hole position, fasten the hydraulic cylinder to the steel plate with bolts, and then tighten the lock nut to ensure it is firm.

[0019] Step 13: Move the frame and wrap component 2 inside it. Insert the top cone of component 3 through the hole above the frame from the inside out. Insert the sealing ring into the hole. Hold component 3 with your hand to prevent it from falling, with the frame opening facing outward.

[0020] Step 14: Place the lower contact of the sensor in the light hole of the lifting sleeve, and pull down component three by hand so that the inner hole below the adjustment sleeve is placed on the upper contact of the sensor;

[0021] Step 15: Tighten the two screws to the threaded holes in the frame, and respectively put the two card plates from top to bottom, so that the card plate through holes are placed on the screw rod light column, and then tighten the nuts to fix the card plates, ensuring that the gaps between the arcs of the two card plates and the cylindrical surface of the sensor are equal, so that the sensor has room to move;

[0022] Step 16: The large component is completely positioned in the frame, slowly move the frame, fine-tune the straightness of the large component, and then slowly release the jack at this point to ensure that the three cone heads of the component are in the cone holes in the cone pressure head; at this moment, the hydraulic lifting mechanism of one point of the static car scale is assembled, remove the jack, and use electric welding to weld the frame firmly to the steel plate.

[0023] Step 17: Follow the steps 8 to 16 to assemble the hydraulic lifting mechanisms of the other five points of the static truck scale.

[0024] Step 18: Connect the six sensors to the weighing instrument and observe whether the sensor analog values are equal. If there are large values, it means that the sensor is faulty or stressed. At this time, loosen the anti-loosening nut of component three, screw down the top cone one circle, and observe that the analog value of the sensor on the weighing instrument decreases. Then rotate the top cone to contact the inner cone surface of the cone pressure head and mark a straight line. Then screw down the top cone one circle again. The straight line marks are aligned. The sensor analog value is close to the other values. Finally, tighten the anti-loosening nut of component three. Use this method to ensure that the analog value of each sensor is similar when it is unloaded and not weighed. Place the weighing instrument in a fixed and conspicuous position on the console.

[0025] Step 19: According to the hydraulic system circuit diagram, connect the 6 hydraulic cylinders, 12 speed control valves, a manual reversing valve, and two relief valves with oil pipes, ensuring that the joints are tightened and there is no oil leakage. The static truck scale hydraulic control circuit connection is now complete.

[0026] Step 20: Remove the jack and other tools. The static vehicle scale is now fully installed.

[0027] A method for using a static automobile scale, comprising the following steps:

[0028] 1) Start the hydraulic system, the manual reversing valve is in the middle position, and the system is in a pressure-free state;

[0029] 2) Turn on the weighing instrument, and the meter will display the value of 0;

[0030] 3) The car is put on the scale. The driver gets off the car and goes to the control console. He switches the manual reversing valve to the upward weighing position. The piston rods of the six hydraulic cylinders rise simultaneously, lifting the scale panel. The sensors bear the load and the weighing instrument displays the car weight.

[0031] 4) The driver turns the manual reversing valve to the lower scale reset position, and the six hydraulic cylinders unload and descend simultaneously, and the weighing instrument display returns to 0; 5) The manual reversing valve is turned to the middle position. At this moment, the system is depressurized, the driver takes away the measurement receipt, and the vehicle leaves the scale and weighing is completed.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] 1. Current vehicle scales have numerous structural flaws. Using sensors directly as support components not only affects weighing accuracy but also reduces their lifespan. The screw stoppers on vehicle scales cause severe, irregular impacts and shaking when the vehicle is loaded or unloaded. This reduces the gaps between the scale panels, deforms the connectors, and frequently causes stop bolts to bend and break. This can also lead to problems such as weight shifting, zero drift, and mechanical failures such as sensor tilt and severe wear of the pressure contacts. Static vehicle scales completely avoid these drawbacks.

[0034] 2. The two circular shafts of the static automobile component cooperate with the positioning seat to control the scale panel on the car without shaking or impact, proving that the positioning and support effects of the scale panel are good, achieving the ability to carry loads in a static and stable manner. The car can get on and off the scale as if walking on flat ground, eliminating the state of violent impact and shaking of the scale panel, and eliminating the phenomenon of displacement and deformation of the scale panel.

[0035] 3. The two control cone sleeves and the dovetail groove of the positioning seat of component 2, the two cone surfaces cooperate to effectively prevent the displacement caused by the up and down movement of the scale panel, ensure that the circular shaft and the dovetail groove have an accurate reset effect and good centering performance.

[0036] 4. When installing component two at the inlet and outlet of the scale panel, the circular shaft is perpendicular to the length of the scale panel to prevent shaking when the vehicle is on or off the scale. When installing component two at the connection point of the scale panel, the circular shaft is parallel to the length of the scale panel to control lateral displacement of the scale body. This eliminates the scale panel's shaking and impact when the vehicle is on or off the scale.

[0037] 5. The large assembly consists of a cone pressure head, hydraulic cylinder, lifting sleeve, sensor, adjustment sleeve, and top cone. When the truck scale is stationary and not weighing, the top cone is separated from the cone pressure head, the sensor is not subjected to any load, and the weighing instrument displays zero. When weighing, the top cone engages with the inner conical surface of the cone pressure head, the sensor is loaded, and the weighing instrument displays the measured data. This separation eliminates the previously loaded conditions in both stationary and loaded sensor states, resulting in significant differences in the analog values displayed on the weighing instrument. This indicates that each sensor is subjected to uneven pressure, and the sensor bearing the heaviest load is likely to fail first. On a static truck scale, when each sensor is unloaded and not in contact with the scale panel, the weighing instrument displays the factory-set analog values. Only when loaded does the sensor analog values change? When the scale panel rises, each sensor is evenly loaded, and the analog values remain similar. This demonstrates that static truck scales with separate support and weighing elements are superior to conventional truck scales, making sensor failures easier to diagnose.

[0038] 6. The lifting sleeve and adjustment sleeve replace the original upper and lower pressure heads. The original upper and lower pressure heads were made of wear-resistant alloy. After use, it was found that the upper and lower contacts of the sensor were worn and failed, while the upper and lower pressure heads were intact. The lifting sleeve and adjustment sleeve are both made of carbon steel, which serves as a connection and load-bearing function in the large assembly. There is no friction and wear caused by impact and shaking, which also extends the service life of the sensor.

[0039] 7. The adjustment sleeve and top cone are threaded together to meet installation requirements. Rotating the top cone downward allows the adjustment sleeve and top cone to rest on the sensor's upper contact. Rotating the top cone upward allows the cone tip to enter the inner conical hole of the cone pressure head and adjust the gap.

[0040] 8. The top cone head and the inner cone hole of the cone pressure head cooperate to achieve automatic centering and vertical alignment, so that the sensor can withstand vertical force more evenly and accurately.

[0041] 9. The frame protects large components and also prevents dust. The screw and ferrule ensure that the sensor can tilt within a controllable gap and has a good trajectory when moving up and down.

[0042] 10. The sealing ring prevents the mud and water mixture above the scale body from entering the frame and affecting the movement of large components.

[0043] 11. Hydraulic cylinder is the most stable and high-quality actuator. The hydraulic control circuit has the highest utilization rate in today's society. It can carry a large system and is easy to operate. It is most suitable for use in static truck scales.

[0044] 12. The current car scale takes 30-40 seconds to weigh the car, while the static car scale only takes 30 seconds to complete the weighing, and the weighing accuracy fully meets the sensor measurement requirements, and the pressure point repeatability is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the entry and exit structure of the car scale;

[0046] Figure 2 This is a structural diagram of the connection position of the two scale panels of the automobile scale;

[0047] Figure 3 It is the hydraulic system circuit control diagram;

[0048] Figure 4 This is a schematic diagram of the installation of a static truck scale;

[0049] Figure 5 This is a schematic diagram of a static truck scale weighing;

[0050] Figure 6 This is a static car scale diagram;

[0051] In the figure: 1-approach, 2-scale panel, 3-bolt, 4-lifting ear, 5-round shaft, 6-nut, 7-locating seat, 8-frame, 9-steel plate, 10-foundation, 11-cone pressure head, 12-top cone, 13-sealing ring, 14-locking nut, 15-adjusting sleeve, 16-sensor, 17-lifting sleeve, 18-locking nut, 19-clamping plate, 20-screw, 21-control taper sleeve, 22-hydraulic cylinder, 23-speed control valve, 24-manual reversing valve, 25-relief valve, 26-jack, 27-car, 28-control console, 29-operator, 30-weighing instrument, 31-rising weighing mark, 32-center mark, 33-center mark, 34-static car scale. DETAILED DESCRIPTION

[0052] In order to deepen the understanding of the present invention, this embodiment is described in detail below with reference to the accompanying drawings.

[0053] Example 1: See Figure 1 A static automobile scale includes an approach 1, a scale panel 2, bolts 3, a lifting ear 4, a round shaft 5, a nut 6, a positioning seat 7, a frame 8, a steel plate 9, a foundation 10, a conical pressure head 11, a top cone 12, a lock nut 13, an adjustment sleeve 14, a sensor 15, a lifting sleeve 16, a locking nut 17, a hydraulic cylinder 18, a control cone sleeve 19, a speed regulating valve 20, a manual reversing valve 21, a relief valve 22, and a jack 23. The threaded end of the round shaft passes through the lifting ear hole and the inner hole of the control cone sleeve, and passes through the hole at the other end of the lifting ear and is fastened by a nut; the hydraulic cylinder is placed on the base steel plate, the lifting sleeve stud is fastened in the threaded hole of the hydraulic cylinder piston rod, and the hydraulic cylinder piston rod is connected to the lifting sleeve. The sensor 15 is connected to the lifting sleeve 16. The adjustment sleeve 14 is connected to the top of the sensor 15. The top cone 12 is connected to the adjustment sleeve 14. The hydraulic cylinder is bolted to the steel plate. The conical pressure head is connected to the hole below the scale panel. The screw is connected to the flat threaded hole in the frame. The ferrule and the screw-connecting frame are welded to the steel plate. The circular shaft 5, the lifting lug 4, and the control cone sleeve 19 form assembly one. The hydraulic cylinder 18, the base 10, the steel plate 9, the lifting sleeve 16, and the hydraulic cylinder 18 form assembly two. The top cone stud and the adjustment sleeve 14 form assembly three. The static scale also includes a dovetail groove in the positioning base. All circular shafts are positioned within the dovetail groove. The control cone sleeve has clearances within the conical surfaces at both ends of the dovetail groove. The static vehicle scale uses a separate support and weighing structure. Support assembly one ensures that the scale panel does not jolt when the vehicle is loaded and unloaded, ensuring the mechanical performance of the scale body is intact. Weighing assembly three protects the sensor from wear, ensures accurate vertical force measurement, and quickly and accurately returns to zero position, extending the sensor life and ensuring precise weighing. The hydraulic control system has a simple structure, is easy to operate, does not have too many control components, and is easier to troubleshoot. The most important thing is that the static truck scale is stable when the car is loaded and unloaded, does not damage the scale body and foundation, and has a more accurate weighing accuracy than the currently used truck scales, with a lower failure rate.

[0054] Example 2: See Figure 1 , a static vehicle scale installation method, the method comprising the following steps:

[0055] Step 1: Place four jacks steadily on the base steel plate, lift the first scale panel horizontally and place it on the four jacks and make sure it is stable; Step 2: Place the lifting lugs on the workbench, align the conical surfaces of the two control cone sleeves, and align the control cone sleeve holes with the lifting lug holes;

[0056] Step 3: Insert the threaded end of the round shaft into the lifting ear hole and the inner hole of the control cone sleeve, and then pass it out from the other end hole of the lifting ear, and then tighten the nut. In this way, assemble the other round shafts, lifting ears and control cone sleeves to complete the assembly, which is called component one;

[0057] Step 4: Pass four bolts through the through holes of the scale panel and the lifting lugs, and fasten the four components to the bottom of the scale panel with nuts. Note that the short side of the scale panel close to the guideway is installed parallel to the two circular axes of the two components, and the two circular axes of the two components at the middle connection position are installed perpendicular to the short side of the scale panel.

[0058] Step 5: Place the four locating seats in the preset fixed positions of the foundation steel plate, align the dovetail groove with the direction of the circular axis, ensure the gap between the approach and the scale panel, lift the first scale panel, and manually adjust all the control cone sleeves to both sides of the circular axis. Place four jacks on the edge of the locating seats for safety protection. The height of the jacks should be lower than the distance from the top corner of the dovetail groove to the steel plate. After lifting the first scale panel, slowly lower it so that the circular axis of component 2 falls smoothly into the dovetail grooves of the four locating seats and is in full contact. The control cone sleeves are in the conical surfaces at both ends of the dovetail groove with a certain gap. In this way, the first scale panel is supported and positioned by the combination of component 1 and the locating seats. Remove the lifting equipment;

[0059] Step 6: Move the four jacks to the basic steel plates in the middle and at the exit. The height of the four jacks is greater than the height of the locating seats. Lift the second scale panel and place it on the four jacks. Fasten component one to the exit position of the second scale panel. The circular axis of component one is parallel to the short side of the scale panel. Only one component one and a locating seat are installed at the connection position of the scale panel. Place the two locating seats on the steel plate and align them with the circular axis of component one. Release the four jacks at the same time. The middle position of the scale panel is fully connected. The circular axis of component one below the exit position of the second scale panel is fully implemented in the dovetail groove of the locating seat. At this point, the two scale panels of the static truck scale are installed in place. Use electric welding to weld the locating seat firmly to the steel plate and remove the jacks.

[0060] Step 7: Insert all cone pressure heads into the mounting holes below the scale panel and secure them firmly. Select a support position on the scale panel at random and place a jack next to the positioning seat. This will not affect subsequent operations and does not apply force. It also serves as a safety measure.

[0061] Step 8: Place the hydraulic cylinder on the base steel plate, tighten the jacking sleeve stud into the threaded hole of the hydraulic cylinder piston rod, and then tighten the lock nut, which is called component 2. Then put the lower contact of the sensor into the inner hole of the jacking sleeve;

[0062] Step 9: Screw the top cone stud to the bottom of the threaded hole of the adjusting sleeve. Do not tighten the top cone locknut. This is called component three. Put the adjusting sleeve optical hole on the sensor contact.

[0063] Step 10: Slowly move the assembly consisting of the hydraulic cylinder, jacking sleeve, sensor, adjustment sleeve, and top cone, called the large assembly, to the bottom of the cone pressure head and hold it steady. Hold the adjustment sleeve with your hand and rotate the top cone to raise it so that the cone head is in full contact with the surface of the inner conical hole of the cone pressure head. Note that the center of the cone pressure head and the large assembly are in a straight line. Use a marker to draw a straight line mark on the surface of the top cone and the cone pressure head. Then reverse the top cone once and align the straight line marks so that there is a certain gap between the cone head and the cone pressure head. Then draw a line on the steel plate to determine the position of the hydraulic cylinder threaded hole. After the above process is completed, apply force to the jack at this point and lift the scale panel until the large assembly is moved out of the inner conical hole of the cone pressure head as a whole.

[0064] Step 11: Remove component 2, sensor, and component 3 and gently place them on the steel plate. Drill and process four threaded holes for the hydraulic cylinder according to the markings on the steel plate. Tighten the locknut of component 3, making sure the straight line marks are straight, and install the sealing ring in the groove of the top cone.

[0065] Step 12: Move component 2 to the processed threaded hole position, fasten the hydraulic cylinder to the steel plate with bolts, and then tighten the lock nut to ensure it is firm.

[0066] Step 13: Move the frame and wrap component 2 inside it. Insert the top cone of component 3 through the hole above the frame from the inside out. Insert the sealing ring into the hole. Hold component 3 with your hand to prevent it from falling, with the frame opening facing outward.

[0067] Step 14: Place the lower contact of the sensor in the light hole of the lifting sleeve, and pull down component three by hand so that the inner hole below the adjustment sleeve is placed on the upper contact of the sensor;

[0068] Step 15: Tighten the two screws to the threaded holes in the frame, and respectively put the two card plates from top to bottom, so that the card plate through holes are placed on the screw rod light column, and then tighten the nuts to fix the card plates, ensuring that the gaps between the arcs of the two card plates and the cylindrical surface of the sensor are equal, so that the sensor has room to move;

[0069] Step 16: The large component is completely positioned in the frame, slowly move the frame, fine-tune the straightness of the large component, and then slowly release the jack at this point to ensure that the three cone heads of the component are in the cone holes in the cone pressure head; at this moment, the hydraulic lifting mechanism of one point of the static car scale is assembled, remove the jack, and use electric welding to weld the frame firmly to the steel plate.

[0070] Step 17: Follow the steps 8 to 16 to assemble the hydraulic lifting mechanisms of the other five points of the static truck scale.

[0071] Step 18: Connect the six sensors to the weighing instrument and observe whether the sensor analog values are equal. If there are large values, it means that the sensor is faulty or stressed. At this time, loosen the anti-loosening nut of component three, screw down the top cone one circle, and observe that the analog value of the sensor on the weighing instrument decreases. Then rotate the top cone to contact the inner cone surface of the cone pressure head and mark a straight line. Then screw down the top cone one circle again. The straight line marks are aligned. The sensor analog value is close to the other values. Finally, tighten the anti-loosening nut of component three. Use this method to ensure that the analog value of each sensor is similar when it is unloaded and not weighed. Place the weighing instrument in a fixed and conspicuous position on the console.

[0072] Step 19: According to the hydraulic system circuit diagram, connect the 6 hydraulic cylinders, 12 speed control valves, a manual reversing valve, and two relief valves with oil pipes, ensuring that the joints are tightened and there is no oil leakage. The static truck scale hydraulic control circuit connection is now complete.

[0073] Step 20: Remove the jack and other tools. The static vehicle scale is now fully installed.

[0074] Example 3: See Figure 1 A method for using a static vehicle scale comprises the following steps:

[0075] 1) Start the hydraulic system, the manual reversing valve is in the middle position, and the system is in a pressure-free state;

[0076] 2) Turn on the weighing instrument, and the meter will display the value of 0;

[0077] 3) The car is put on the scale. The driver gets off the car and goes to the control console. He switches the manual reversing valve to the upward weighing position. The piston rods of the six hydraulic cylinders rise simultaneously, lifting the scale panel. The sensors bear the load and the weighing instrument displays the car weight.

[0078] 4) The driver turns the manual reversing valve to the lower scale reset position, the six hydraulic cylinders unload and descend at the same time, and the weighing instrument display returns to 0; 5) The manual reversing valve is turned to the middle position, at this moment the system is pressure-free, the driver takes away the metering ticket, and the car leaves the scale and weighing is completed. It should be noted that the above embodiments are not intended to limit the scope of protection of the present invention, and equivalent changes or substitutions made on the basis of the above technical solutions fall within the scope of protection of the claims of the present invention.

Claims

1. A method for installing a static automobile scale, the automobile scale comprising an approach, a scale panel, bolts, a lifting lug, a round shaft, nuts, a positioning seat, a frame, a steel plate, a foundation, a conical pressure head, a top cone, a lock nut, an adjustment sleeve, a sensor, a lifting sleeve, a locking nut, a hydraulic cylinder, a control cone sleeve, a speed regulating valve, a manual reversing valve, a relief valve, and a jack. The threaded end of the round shaft passes through the lifting lug hole and the inner hole of the control cone sleeve, passes through the hole at the other end of the lifting lug, and is fastened by a nut; the hydraulic cylinder is placed on the foundation steel plate, the lifting sleeve stud is fastened to the threaded hole of the hydraulic cylinder piston rod, the hydraulic cylinder piston rod is connected to the lifting sleeve, the sensor is connected to the lifting sleeve, the adjustment sleeve is connected to the upper part of the sensor, the top cone is connected to the adjustment sleeve, and the hydraulic cylinder is fixed to the steel plate by bolts; the conical pressure head is connected to the hole below the scale panel; the lead screw is connected to the flat threaded hole in the frame, the ferrule is connected to the lead screw, and the frame is welded to the steel plate; The circular shaft, lifting lug and control cone sleeve form component one, the hydraulic cylinder, foundation, steel plate, lifting sleeve and hydraulic cylinder form component two, and the top cone stud and adjustment sleeve form component three; The static scale also includes a positioning seat dovetail groove, all circular shafts are arranged in the positioning seat dovetail groove, and the control cone sleeve is provided with a gap in the cone surface at both ends of the dovetail groove; it is characterized in that The static vehicle scale installation method includes the following steps: Step 1: Place four jacks stably on the base steel plate, lift the first scale panel flat and place it on the four jacks and make sure it is stable; Step 2: Place the lifting lug on the workbench, align the tapered surfaces of the two control taper sleeves, and align the control taper sleeve hole with the lifting lug hole; Step 3: Insert the threaded end of the round shaft into the lifting ear hole and the inner hole of the control cone sleeve, and then pass it out from the other end hole of the lifting ear, and then tighten the nut. In this way, assemble the other round shafts, lifting ears and control cone sleeves to complete the assembly, which is called component one; Step 4: Pass four bolts through the through holes of the scale panel and the hanging ear plane, and fasten the four components to the bottom of the scale panel with nuts. Step 5: Place the four locating seats in the preset fixed positions of the foundation steel plate, align the dovetail groove with the direction of the circular axis, ensure the gap between the approach and the scale panel, lift the first scale panel, and manually adjust all the control cone sleeves to both sides of the circular axis. Place four jacks on the edge of the locating seats for safety protection. The height of the jacks should be lower than the distance from the top corner of the dovetail groove to the steel plate. After lifting the first scale panel, slowly lower it so that the second circular axis of the assembly falls smoothly into the dovetail groove of the four locating seats and is in full contact. The control cone sleeves should be in the conical surfaces at both ends of the dovetail groove with a certain gap. Remove the lifting equipment. Step 6: Move the four jacks to the basic steel plates in the middle and at the exit. The height of the four jacks is greater than the height of the locating seats. Lift the second scale panel and place it on the four jacks. Fasten component one to the exit position of the second scale panel. The circular axis of component one is parallel to the short side of the scale panel. Only one component one and a locating seat are installed at the connection position of the scale panel. Place the two locating seats on the steel plate and align them with the circular axis of component one. Release the four jacks at the same time. The middle position of the scale panel is fully connected. The circular axis of component one below the exit position of the second scale panel is fully implemented in the dovetail groove of the locating seat. At this point, the two scale panels of the static truck scale are installed in place. Use electric welding to weld the locating seat firmly to the steel plate and remove the jacks. Step 7: Insert all cone pressure heads into the mounting holes below the scale panel and firmly press them against each other. Select a support position on the scale panel at random and place a jack next to the positioning seat. Step 8: Place the hydraulic cylinder on the base steel plate, tighten the jacking sleeve stud into the threaded hole of the hydraulic cylinder piston rod, and then tighten the lock nut, which is called component 2. Then put the lower contact of the sensor into the inner hole of the jacking sleeve; Step 9: Screw the top cone stud to the bottom of the threaded hole of the adjusting sleeve. Do not tighten the top cone locknut. This is called component three. Put the adjusting sleeve optical hole on the sensor contact. Step 10: Slowly move the assembly consisting of the hydraulic cylinder, lifting sleeve, sensor, adjustment sleeve, and top cone, called the large assembly, under the cone pressure head and hold it steady. Hold the adjustment sleeve with your hand and rotate the top cone to raise it so that the cone head is in full contact with the surface of the tapered hole inside the cone pressure head. Step 11: Remove component 2, sensor, and component 3 and gently place them on the steel plate. Drill and process four threaded holes for the hydraulic cylinder according to the markings on the steel plate. Tighten the locknut of component 3, making sure the straight line marks are straight, and install the sealing ring in the groove of the top cone. Step 12: Move component 2 to the position of the processed threaded hole, fasten the hydraulic cylinder to the steel plate with bolts, and then tighten the lock nut to ensure it is firm; Step 13: Move the frame and wrap component 2 inside it. Insert the top cone of component 3 through the hole above the frame from the inside out. Insert the sealing ring into the hole. Hold component 3 with your hand to prevent it from falling, with the frame opening facing outward. Step 14: Place the lower contact of the sensor in the light hole of the lifting sleeve, and pull down component three by hand so that the inner hole below the adjustment sleeve is placed on the upper contact of the sensor; Step 15: Tighten the two screws to the threaded holes in the frame, and respectively put the two card plates from top to bottom, so that the card plate through holes are placed on the screw rod light column, and then tighten the nuts to fix the card plates, ensuring that the gaps between the arcs of the two card plates and the cylindrical surface of the sensor are equal, so that the sensor has room to move; Step 16: Position the large component completely within the frame, slowly move the frame, fine-tune the straightness of the large component, and then slowly release the jack at this point to ensure that the three cone heads of the component are in the cone holes of the cone pressure head; Step 17: Follow the steps 8 to 16 to assemble the hydraulic lifting mechanisms of the other five points of the static truck scale. Step 18: Connect the six sensors to the weighing instrument and observe whether the analog values of the sensors are equal. If there are large values, it means that the sensor is faulty or stressed. At this time, loosen the anti-loosening nut of component three, screw down the top cone one circle, and observe that the analog value of the sensor on the weighing instrument decreases. Then rotate the top cone to contact the inner conical surface of the cone pressure head and mark a straight line. Screw down the top cone one circle again to align the straight line marks. Finally, tighten the anti-loosening nut of component three. Follow this method to ensure that the analog values of each sensor are similar when no-load and not weighing. Place the weighing instrument in a fixed and conspicuous position on the console. Step 19: Connect the 6 hydraulic cylinders, 12 speed regulating valves, a manual reversing valve, and two relief valves with oil pipes, ensuring that the joints are tightened and there is no oil leakage. The static truck scale hydraulic control circuit connection is now complete. Step 20: Remove the jack and the static car scale is now fully installed.

2. The static automobile scale installation method according to claim 1, characterized in that: How to use a static car scale includes the following steps: 1) Start the hydraulic system, the manual reversing valve is in the middle position, and the system is in a pressure-free state; 2) Turn on the weighing instrument, and the meter will display the value of 0; 3) The car is placed on the scale. The driver gets off the car and goes to the control console. He switches the manual reversing valve to the upward weighing position. The piston rods of the six hydraulic cylinders rise simultaneously, lifting the scale panel. The sensors bear the load, and the weighing instrument displays the car's weight. 4) The driver turns the manual reversing valve to the lower scale reset position, and the six hydraulic cylinders unload and descend simultaneously, and the weighing instrument display returns to 0; 5) The manual reversing valve is turned to the middle position. At this moment, the system is pressure-free. The driver takes away the metering receipt and the vehicle leaves the scale for weighing.

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