A motor vehicle detection line axle load measuring device

Abstract

The present invention discloses a motor vehicle detection line axle load measuring device, which relates to the technical field of weighing devices, and comprises: a support plate, a fixed block is fixedly installed on the top of the support plate, and a support assembly, wherein the support assembly comprises a negative pressure pump, and valves are arranged on the outer surfaces of the air inlet pipe and the air outlet pipe of the negative pressure pump. The motor vehicle detection line axle load measuring device first detects the load condition of the motor vehicle wheels when the front and rear wheels of the motor vehicle are respectively on the surfaces of the first measuring block and the second measuring block. When the load difference is large, the negative pressure pump is started to drive the movable rod to move to the center position of the bottom of the motor vehicle, and the first cylinder on the side with larger load is started to lift one side of the motor vehicle to find out the reason for the uneven force on the wheels of the motor vehicle, thereby solving the problem that the motor vehicle detection line axle load measuring device in the prior art cannot analyze the motor vehicle according to the force condition of the wheels, which may easily cause safety accidents.

Description

Technical Field

[0001] The invention relates to the technical field of weighing devices, in particular to a motor vehicle detection line axle load measuring device. Background Art

[0002] The motor vehicle inspection line axle load measuring device is a device used to measure the axle load of motor vehicles. It is often used for vehicle load detection and overload detection of heavy-loaded vehicles. The device can sense the pressure on the axle suspension system and then convert these signals into electrical signals. Then, the data acquisition system collects these electrical signals and transmits them to the computer control system for processing and analysis. The use of axle load measuring devices can improve the accuracy and efficiency of vehicle detection, especially in the fields of road traffic supervision, highway tolls, transportation management and traffic safety. It plays an important role. It can effectively prevent the driving of overloaded vehicles, reduce road damage and safety risks, and protect the integrity and service life of transportation infrastructure.

[0003] Existing heavy motor vehicle stations are places that provide services specifically for heavy trucks and transport vehicles. These stations use motor vehicle inspection line axle load measuring devices to detect the weight and axle load of the vehicle, which is very important for ensuring the compliance and safety of trucks on the road. Existing heavy vehicles are prone to load stacking and offset, which makes the cargo inside the vehicle light on one side and heavy on the other. The vehicle's center of gravity changes due to uneven weight during later driving, which in turn leads to a decrease in vehicle stability, causing rollover and loss of control. However, most of the existing motor vehicle inspection line axles simply measure the load condition of the motor vehicle, and are unable to judge the load condition of the motor vehicle based on the force condition of each wheel, which in turn brings certain risks to the operation of the motor vehicle.

[0004] Therefore, we propose a motor vehicle detection line axle load measurement device to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a motor vehicle detection line axle load measuring device to solve the problem that the motor vehicle detection line axle load measuring device proposed in the above background technology cannot analyze the motor vehicle according to the stress conditions of the wheels and is likely to cause safety accidents.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A motor vehicle detection line axle load measuring device, comprising: a support plate, a fixed block is fixedly installed on the top of the support plate, a support assembly, the support assembly includes a negative pressure pump, valves are arranged on the outer surfaces of the air inlet pipe and the air outlet pipe of the negative pressure pump, a groove is opened on the top of the support plate, a fixed pipe is fixed between the opposite inner walls of the groove, a piston is slidably connected inside the fixed pipe, a moving pipe is fixed on the outer surface of the piston, a movable rod is fixedly installed on the outer surface of the movable pipe, a bearing block is fixed on the top of the movable rod near the two side edges, an auxiliary pipe is movably embedded between the two bearing blocks, a lifting rod is rotatably sleeved on the outer surface of the auxiliary pipe, a first cylinder is arranged on the top of the movable rod near the two side edges, four bearing blocks are fixed on the bottom of the auxiliary pipe, two of the four bearing blocks form a group, a limiting rod is fixed between the outer surfaces of each group of the bearing blocks, and a rotating block is rotatably sleeved on the outer surfaces of the two limiting rods.

[0007] Preferably, the outer surface of the negative pressure pump is fixedly connected to the inner wall of the groove by screws, and one end of the air inlet pipe and the air outlet pipe of the negative pressure pump are fixedly penetrated into the interior of the fixed pipe.

[0008] Preferably, a telescopic tube is fixed inside the other side of the groove, one end of the telescopic tube is fixedly connected to one end of the movable tube, one end of the movable tube is movably penetrated to the outside of the fixed tube, and the outer surfaces of the two rotating blocks are respectively fixedly connected to one end of the two first cylinders.

[0009] Preferably, a deceleration assembly is arranged on the outer surface of the support plate, and the deceleration assembly includes a slope, the outer surface of the slope is fixedly connected to the outer surface of the support plate, a plurality of slide grooves are arranged on the top of the slope, a connecting groove is arranged on the outer surface of the slope, and a second cylinder is arranged on the inner bottom surface of the connecting groove.

[0010] Preferably, a lifting block is fixedly installed on the top of the second cylinder, and a plurality of baffle rods are fixedly connected to the top of the lifting block. The outer surfaces of the plurality of baffle rods are respectively slidably connected to the inner parts of a plurality of slide grooves. A support rod is fixed on the top of the support plate near one side edge, and a radar speed meter is arranged on the top of the support rod.

[0011] Preferably, a control system is arranged on the outer surface of the fixed block, and a movable component is arranged on the top of the support plate, and the movable component includes two sliding rods, one end of each of the sliding rods is fixedly connected to the outer surface of the fixed block, one end of each of the sliding rods is fixedly connected to a limiting block, and the bottoms of the two limiting blocks are fixedly connected to the top of the support plate.

[0012] Preferably, the outer surfaces of the two sliding rods are slidably connected with sliders, a support frame is fixed between the tops of the two sliders, a fixing frame is fixedly installed on the outer surface of the fixed block, a forward and reverse motor is arranged on the inner wall of the fixed frame, the output shaft of the forward and reverse motor is fixedly connected with a screw rod, and one end of the screw rod is movably penetrated to the outside of the fixed block.

[0013] Preferably, the outer surface of the screw rod is connected to the internal thread of the support frame, a laser rangefinder is arranged on the outer surface of the fixed frame, electric push rods are arranged on the relative inner walls of the fixed blocks, a first measuring block is fixed at one end of the two electric push rods, a first pressure sensor is arranged inside the two first measuring blocks, and two connecting plates are fixedly installed on the top of the two first measuring blocks.

[0014] Preferably, a first hydraulic rod is provided on the outer surface of the two connecting plates, a first positioning block is fixed at one end of the two first hydraulic rods, a multi-stage electric telescopic rod is provided on the relative inner wall of the support frame, a second measuring block is fixed at one end of the two multi-stage electric telescopic rods, and a second pressure sensor is provided on the inner top surface of the two second measuring blocks near one side edge.

[0015] Preferably, a third cylinder is arranged near the center of the inner top surface of the two second measuring blocks, the bottom end of the third cylinder is fixedly connected to a lifting plate, two load plates are fixed to the top of the two second measuring blocks, second hydraulic rods are arranged on the outer surfaces of the two load plates, and a second positioning block is fixedly installed at one end of the two second hydraulic rods.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the front and rear wheels of a motor vehicle are respectively on the surfaces of a first measuring block and a second measuring block, the load condition of the wheels of the motor vehicle is first detected. When the load difference is large, the negative pressure pump is started to drive the movable rod to move to the center position of the bottom of the motor vehicle, and the first cylinder on the side with a larger load is started to lift one side of the motor vehicle to find out the cause of the uneven force on the wheels of the motor vehicle. This solves the problem in the prior art that the axle load measurement device of the motor vehicle detection line cannot analyze the motor vehicle according to the force condition of the wheels, which may easily cause safety accidents.

[0018] 2. When it is necessary to detect the load condition of a motor vehicle, first drive the motor vehicle to the surface of the slope, detect the running speed of the motor vehicle by using a radar speed meter, determine the height to which the barrier lever needs to rise by using a control system, start the second cylinder, limit the speed of the motor vehicle, and reduce the running speed of the motor vehicle to the required speed. Through the action of the deceleration component, the motor vehicle that needs load detection can quickly reduce the speed to the required speed.

[0019] 3. After the motor vehicle enters the top of the support plate, the distance between the two wheels of the motor vehicle is first detected by a laser rangefinder, and the two electric push rods are started so that the outer surfaces of the two first measuring blocks are respectively facing the two wheels of the motor vehicle, and then the forward and reverse motors are started so that the two second measuring blocks and the two first measuring blocks are all at the bottom of the front and rear wheels, so that the motor vehicle detection line axle load measuring device can perform load detection on motor vehicles of different sizes, thereby improving the practicality of the motor vehicle detection line axle load measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front perspective view of a motor vehicle detection line axle load measuring device of the present invention;

[0021] Figure 2 It is a cross-sectional perspective view of a deceleration component part of a motor vehicle detection line axle load measurement device according to the present invention;

[0022] Figure 3 It is a three-dimensional diagram of a moving component part of a motor vehicle detection line axle load measurement device of the present invention;

[0023] Figure 4 It is a partially cutaway stereoscopic view of a first measuring block of a motor vehicle detection line axle load measuring device of the present invention;

[0024] Figure 5 It is a partially cutaway stereoscopic view of a second measuring block of a motor vehicle detection line axle load measuring device of the present invention;

[0025] Figure 6 It is a cross-sectional perspective view of the fixed pipe structure of a motor vehicle detection line axle load measurement device of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0027] Figure 8 It is a perspective view of the structure of the lifting rod part of a motor vehicle detection line axle load measurement device of the present invention;

[0028] Fig. 9 For the present invention Figure 8 Enlarged view of point B in the middle.

[0029] In the figure:

[0030] 1. Support plate; 2. Fixed block; 3. Speed ​​reduction assembly; 301. Slope; 302. Slide; 303. Connecting groove; 304. Second cylinder; 305. Lifting block; 306. Stop rod; 307. Support rod; 308. Radar speedometer; 4. Moving assembly; 401. Slide rod; 402. Sliding block; 403. Stop block; 404. Support frame; 405. Fixed frame; 406. Forward and reverse motor; 407. Screw rod; 408. Laser rangefinder; 409. Electric push rod; 410. First measuring block; 411. First pressure sensor; 412. Connecting plate; 413. First hydraulic rod; 414. First positioning Block; 415, multi-stage electric telescopic rod; 416, second measuring block; 417, second pressure sensor; 418, third cylinder; 419, lifting plate; 420, load plate; 421, second hydraulic rod; 422, second positioning block; 5, control system; 6, groove; 7, support assembly; 701, negative pressure pump; 702, valve; 703, fixed pipe; 704, piston; 705, moving pipe; 706, telescopic pipe; 707, movable rod; 708, bearing block; 709, auxiliary pipe; 710, lifting rod; 711, first cylinder; 712, load-bearing block; 713, limit rod; 714, rotating block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described 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.

[0032] See also Figure 1-9The present invention provides a technical solution: a motor vehicle detection line axle load measuring device, comprising: a support plate 1, a fixed block 2 is fixedly installed on the top of the support plate 1, a support assembly 7, the support assembly 7 includes a negative pressure pump 701, valves 702 are arranged on the outer surfaces of the air inlet pipe and the air outlet pipe of the negative pressure pump 701, a groove 6 is opened on the top of the support plate 1, a fixed pipe 703 is fixed between the relative inner walls of the groove 6, a piston 704 is slidably connected inside the fixed pipe 703, a moving pipe 705 is fixed on the outer surface of the piston 704, and a movable rod is fixedly installed on the outer surface of the moving pipe 705 707, bearing blocks 708 are fixed to the top of the movable rod 707 near the edges of both sides, an auxiliary tube 709 is movably embedded between the two bearing blocks 708, a lifting rod 710 is rotatably sleeved on the outer surface of the auxiliary tube 709, a first cylinder 711 is arranged at the top of the movable rod 707 near the edges of both sides, four bearing blocks 712 are fixed to the bottom of the auxiliary tube 709, the four bearing blocks 712 form a group of two, a limiting rod 713 is fixed between the outer surfaces of each group of bearing blocks 712, and a rotating block 714 is rotatably sleeved on the outer surfaces of the two limiting rods 713.

[0033] like Figure 1 and Figure 6-7 As shown, the outer surface of the negative pressure pump 701 is fixedly connected to the inner wall of the groove 6 by screws, and one end of the air inlet pipe and the air outlet pipe of the negative pressure pump 701 are fixedly passed through the interior of the fixed pipe 703. By passing the air inlet pipe and the air outlet pipe through the interior of the fixed pipe 703, the movement of the movable tube 705 is facilitated.

[0034] like Figure 1 and Figure 6-9 As shown, a telescopic tube 706 is fixed inside the other side of the groove 6, one end of the telescopic tube 706 is fixedly connected to one end of the moving tube 705, and one end of the moving tube 705 is movable through the outside of the fixed tube 703. The outer surfaces of the two rotating blocks 714 are respectively fixedly connected to one end of the two first cylinders 711. The telescopic tube 706 supports the moving tube 705 to make it more stable during the movement. The two first cylinders 711 are started to extend, thereby driving the two rotating blocks 714 to move upward, and then driving the auxiliary tube 709 to rotate upward.

[0035] like Figure 1-2 As shown, a deceleration assembly 3 is arranged on the outer surface of the support plate 1, and the deceleration assembly 3 includes a ramp 301. The outer surface of the ramp 301 is fixedly connected to the outer surface of the support plate 1, and a plurality of slide grooves 302 are provided on the top of the ramp 301. A connecting groove 303 is provided on the outer surface of the ramp 301, and a second cylinder 304 is arranged on the inner bottom surface of the connecting groove 303. The motor vehicle enters the top of the support plate 1 through the ramp 301, and the movement of the blocking rod 306 is facilitated by the opening of a plurality of slide grooves 302.

[0036] like Figure 1-2 As shown, a lifting block 305 is fixedly installed on the top of the second cylinder 304, and a plurality of baffle rods 306 are fixedly connected to the top of the lifting block 305. The outer surfaces of the plurality of baffle rods 306 are respectively slidably connected to the inner parts of the plurality of slide grooves 302. A support rod 307 is fixed to the top of the support plate 1 near one side edge, and a radar speed meter 308 is arranged on the top of the support rod 307. When it is necessary to detect the load condition of the motor vehicle, the motor vehicle is first driven to the surface of the slope 301, and the running speed of the motor vehicle is detected by the radar speed meter 308. Then, the second cylinder 304 is started to extend it, thereby driving the lifting block 305 to move upward. The movement of the lifting block 305 drives the plurality of baffle rods 306 to move upward, thereby limiting the speed of the motor vehicle, so that the running speed of the motor vehicle is reduced to the required speed.

[0037] like Figure 1 and Figure 3 As shown, a control system 5 is arranged on the outer surface of the fixed block 2, and a moving component 4 is arranged on the top of the supporting plate 1. The moving component 4 includes two sliding bars 401. One ends of the two sliding bars 401 are fixedly connected to the outer surface of the fixed block 2. One ends of the two sliding bars 401 are fixedly connected to limit blocks 403. The bottoms of the two limit blocks 403 are fixedly connected to the top of the supporting plate 1. The connection between the two sliding bars 401 and the fixed block 2 ensures the stability of the sliding bars 401. The two limit blocks 403 prevent the two sliders 402 from sliding out of the outer surface of the sliding bars 401.

[0038] like Figure 1 and Figure 3 As shown, the outer surfaces of the two slide bars 401 are slidably connected with the slider 402, a support frame 404 is fixed between the tops of the two sliders 402, a fixing frame 405 is fixedly installed on the outer surface of the fixing block 2, a forward and reverse motor 406 is arranged on the inner wall of the fixing frame 405, and the output shaft of the forward and reverse motor 406 is fixedly connected with a screw rod 407, one end of the screw rod 407 is movable and penetrates to the outside of the fixing block 2, and the two slide bars 401 play a role of limiting the two sliders 402. When the forward and reverse motor 406 is started, the screw rod 407 is driven to rotate, thereby driving the support frame 404 to move along the two slide bars 401.

[0039] like Figure 1 and Figure 3-4As shown, the outer surface of the screw rod 407 is connected to the internal thread of the support frame 404, the outer surface of the fixed frame 405 is provided with a laser rangefinder 408, and the relative inner walls of the fixed block 2 are provided with electric push rods 409, one end of the two electric push rods 409 is fixed with a first measuring block 410, the interior of the two first measuring blocks 410 is provided with a first pressure sensor 411, and the top of the two first measuring blocks 410 is fixed with two connecting plates 412. Through the threaded connection between the screw rod 407 and the support frame 404, the support frame 404 is driven to move during the rotation of the screw rod 407, and the two electric push rods 409 are started to extend or shorten, so as to drive the two first measuring blocks 410 to move until the outer surfaces of the two first measuring blocks 410 are respectively facing the two wheels of the motor vehicle.

[0040] like Figure 3-5 As shown, first hydraulic rods 413 are provided on the outer surfaces of the two connecting plates 412, and first positioning blocks 414 are fixed at one ends of the two first hydraulic rods 413. Multi-stage electric telescopic rods 415 are provided on the opposite inner walls of the support frame 404, and second measuring blocks 416 are fixed at one ends of the two multi-stage electric telescopic rods 415. Second pressure sensors 417 are provided on the inner top surfaces of the two second measuring blocks 416 near one side edge. The two first hydraulic rods 413 are started to extend and drive the two first positioning blocks 414 to move. The two multi-stage electric telescopic rods 415 are started to drive the two second measuring blocks 416 to move, and the load condition of the motor vehicle is detected by the second pressure sensor 417.

[0041] like Figure 5 As shown, a third cylinder 418 is arranged near the center of the inner top surface of the two second measuring blocks 416, and the bottom end of the third cylinder 418 is fixedly connected with a lifting plate 419, and two load plates 420 are fixedly arranged on the top of the two second measuring blocks 416, and a second hydraulic rod 421 is arranged on the outer surface of the two load plates 420, and a second positioning block 422 is fixedly installed at one end of the two second hydraulic rods 421. When the front and rear wheels of the motor vehicle are respectively on the surface of the first measuring block 410 and the second measuring block 416, the two first hydraulic rods 413 and the second hydraulic rod 421 are respectively started to extend, and the first positioning block 414 and the second positioning block 422 are respectively driven to move toward the center position of the support plate 1 to position the wheels of the motor vehicle.

[0042] The use method and working principle of the device: when it is necessary to detect the load condition of a motor vehicle, first drive the motor vehicle to the surface of the slope 301, and detect the running speed of the motor vehicle through the radar speed meter 308, wherein the radar speed meter 308 is a commonly used traffic monitoring device, and its working principle is based on radar technology. The radar speed meter 308 measures the running speed of the vehicle by emitting a beam of microwave signals and receiving the reflections of these signals. The radar speed meter 308 transmits the signal to the control system 5, and the control system 5 determines the height to which the barrier rod 306 needs to rise, and then the control system 5 starts the second cylinder 304 to extend it, driving the lifting block 305 to move upward, and the movement of the lifting block 305 drives the multiple barrier rods 306 to move upward, The speed of the motor vehicle is limited so that the running speed of the motor vehicle is reduced to the required speed. Through the action of the deceleration component 3, the motor vehicle that needs load detection can quickly reduce to the required speed. The motor vehicle enters the top of the support plate 1 through the slope 301. First, the distance between the two wheels of the motor vehicle is detected by the laser rangefinder 408, and the signal is transmitted to the control system 5. The two electric push rods 409 are started by the control system 5 to extend or shorten them, driving the two first measuring blocks 410 to move until the outer surfaces of the two first measuring blocks 410 are respectively facing the two wheels of the motor vehicle. Then, the distance between the front and rear wheels of the motor vehicle is continuously detected by the laser rangefinder 408, and the signal is transmitted to the control system 5. The forward and reverse motors are started by the control system 5. 406, driving the two sliders 402 to slide along the two slide bars 401 respectively, thereby driving the support frame 404 to move along the slide bar 401, thereby driving the two second measuring blocks 416 to move. When the distance between the two second measuring blocks 416 and the two first measuring blocks 410 is equal to the distance between the center parts of the front and rear wheels of the motor vehicle, the forward and reverse motors 406 are turned off, and then the two multi-stage electric telescopic rods 415 are started to drive the two second measuring blocks 416 to move to the same position as the distance between the two first measuring blocks 410, and then the two third cylinders 418 are started to extend them, driving the two lifting plates 419 to move downward until the rollers at the bottom of the two lifting plates 419 contact the top of the support plate 1, and through the action of the moving assembly 4, the machine The motor vehicle detection line axle load measuring device can perform load detection on motor vehicles of different sizes, thereby improving the practicality of the motor vehicle detection line axle load measuring device. When the front and rear wheels of the motor vehicle are respectively on the surfaces of the first measuring block 410 and the second measuring block 416, the two first hydraulic rods 413 and the second hydraulic rods 421 are respectively started to extend, and the first positioning block 414 and the second positioning block 422 are respectively driven to move toward the center position of the support plate 1 to position the wheels of the motor vehicle to prevent the wheels of the motor vehicle from moving during the load measurement process. Then, the load condition of the wheels of the motor vehicle is detected by the first pressure sensor 411 and the second pressure sensor 417, and the output signal is transmitted to the control system 5. The load condition of the motor vehicle is analyzed by the control system 5.When the load conditions on both sides of the motor vehicle are quite different, the negative pressure pump 701 is first started, and the valve 702 on the surface of the intake pipe is opened to deliver gas to the inside of the fixed pipe 703. Under the pressure of the gas, the piston 704 is driven to move forward, and then the movable pipe 705 is driven to move forward, thereby driving the movable rod 707 to move. When the movable rod 707 moves to the center position of the bottom of the motor vehicle, the first cylinder 711 on the side with the larger load is started to extend it, driving the rotating block 714 to move upward, and then driving one side of the lifting rod 710 to rotate upward along the auxiliary pipe 709 to lift one side of the motor vehicle, so that the chassis frame part of the motor vehicle is on the same horizontal line and is in a parallel state with the support plate 1. Then, the load conditions on both sides of the motor vehicle are measured through the first pressure sensor 411 and the second pressure sensor 417. When the load conditions on both sides of the motor vehicle still have a large deviation, it indicates that the weight distribution of the load in the motor vehicle is uneven and needs to be adjusted. When the first pressure sensor 411 When the load on both sides of the motor vehicle is evenly measured by the second pressure sensor 417, it indicates that the wheel pressure on one side of the motor vehicle is insufficient, and the analysis result can be transmitted to the control system 5, and the signal is transmitted to the staff through the control system 5 to measure and adjust the motor vehicle. Through the function of the support component 7, the motor vehicle can judge whether the cargo accumulation in the motor vehicle is even by the load condition of each side of the wheel when measuring the load, which solves the problem that the motor vehicle detection line axle load measurement device in the prior art cannot analyze the load of the motor vehicle according to the force condition of the wheel, which may easily cause safety accidents during the operation of the motor vehicle. Among them, the control system 5 and the second cylinder 304, the radar speed meter 308, the forward and reverse motor 406, the laser rangefinder 408, the electric push rod 409, the first pressure sensor 411, the first hydraulic rod 413, the multi-stage electric telescopic rod 415, the second pressure sensor 417, the third cylinder 418, the second hydraulic rod 421, the negative pressure pump 701 and the first cylinder 711 are all electrically connected.

[0043] The wiring diagram of the second cylinder 304, the radar speed meter 308, the forward and reverse motor 406, the laser rangefinder 408, the electric push rod 409, the first pressure sensor 411, the first hydraulic rod 413, the multi-stage electric telescopic rod 415, the second pressure sensor 417, the third cylinder 418, the second hydraulic rod 421, the control system 5, the negative pressure pump 701 and the first cylinder 711 in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the second cylinder 304, the radar speed meter 308, the forward and reverse motor 406, the laser rangefinder 408, the electric push rod 409, the first pressure sensor 411, the first hydraulic rod 413, the multi-stage electric telescopic rod 415, the second pressure sensor 417, the third cylinder 418, the second hydraulic rod 421, the control system 5, the negative pressure pump 701 and the first cylinder 711 are no longer explained in detail.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. 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 motor vehicle detection line axle load measuring device, characterized in that: include: A support plate (1), a fixing block (2) being fixedly mounted on the top of the support plate (1); A support assembly (7), the support assembly (7) comprising a negative pressure pump (701), the outer surfaces of the air inlet pipe and the air outlet pipe of the negative pressure pump (701) are both provided with valves (702), the top of the support plate (1) is provided with a groove (6), a fixed tube (703) is fixed between the opposite inner walls of the groove (6), a piston (704) is slidably connected inside the fixed tube (703), a movable tube (705) is fixed on the outer surface of the piston (704), a movable rod (707) is fixedly installed on the outer surface of the movable tube (705), and the top of the movable rod (707) is fixed near the two side edges. A bearing block (708) is fixed, an auxiliary tube (709) is movably embedded between the two bearing blocks (708), a lifting rod (710) is rotatably sleeved on the outer surface of the auxiliary tube (709), a first cylinder (711) is arranged at the top of the movable rod (707) near the edges of both sides, four bearing blocks (712) are fixed at the bottom of the auxiliary tube (709), two of the four bearing blocks (712) form a group, a limiting rod (713) is fixed between the outer surfaces of each group of bearing blocks (712), and a rotating block (714) is rotatably sleeved on the outer surfaces of the two limiting rods (713); A control system (5) is arranged on the outer surface of the fixed block (2); a moving assembly (4) is arranged on the top of the support plate (1); the moving assembly (4) comprises two sliding rods (401); one end of each of the two sliding rods (401) is fixedly connected to the outer surface of the fixed block (2); one end of each of the two sliding rods (401) is fixedly connected to a limiting block (403); and the bottoms of each of the two limiting blocks (403) are fixedly connected to the top of the support plate (1); The outer surfaces of the two sliding rods (401) are slidably connected to a slider (402), a support frame (404) is fixed between the tops of the two sliders (402), a fixing frame (405) is fixedly installed on the outer surface of the fixing block (2), a forward and reverse motor (406) is arranged on the inner wall of the fixing frame (405), an output shaft of the forward and reverse motor (406) is fixedly connected to a screw rod (407), and one end of the screw rod (407) is movably penetrated to the outside of the fixing block (2); The outer surface of the screw rod (407) is connected to the inner thread of the support frame (404); a laser rangefinder (408) is arranged on the outer surface of the fixing frame (405); electric push rods (409) are arranged on the opposite inner walls of the fixing block (2); a first measuring block (410) is fixed to one end of each of the two electric push rods (409); a first pressure sensor (411) is arranged inside each of the two first measuring blocks (410); and two connecting plates (412) are fixedly installed on the top of each of the two first measuring blocks (410); A first hydraulic rod (413) is disposed on the outer surface of the two connecting plates (412), a first positioning block (414) is fixed to one end of the two first hydraulic rods (413), a multi-stage electric telescopic rod (415) is disposed on the opposite inner wall of the support frame (404), a second measuring block (416) is fixed to one end of the two multi-stage electric telescopic rods (415), and a second pressure sensor (417) is disposed on the inner top surface of the two second measuring blocks (416) near one side edge; A third cylinder (418) is disposed near the center of the inner top surface of the two second measuring blocks (416); the bottom end of the third cylinder (418) is fixedly connected to a lifting plate (419); two load plates (420) are fixedly disposed on the top of the two second measuring blocks (416); a second hydraulic rod (421) is disposed on the outer surface of the two load plates (420); and a second positioning block (422) is fixedly mounted on one end of the two second hydraulic rods (421).

2. The motor vehicle detection line axle load measuring device according to claim 1, characterized in that: The outer surface of the negative pressure pump (701) is fixedly connected to the inner wall of the groove (6) via screws, and one end of the air inlet pipe and the air outlet pipe of the negative pressure pump (701) are fixedly penetrated into the interior of the fixed pipe (703).

3. The motor vehicle detection line axle load measuring device according to claim 2, characterized in that: A telescopic tube (706) is fixed inside the other side of the groove (6), one end of the telescopic tube (706) is fixedly connected to one end of the movable tube (705), one end of the movable tube (705) is movably extended to the outside of the fixed tube (703), and the outer surfaces of the two rotating blocks (714) are respectively fixedly connected to one end of the two first cylinders (711).

4. The motor vehicle detection line axle load measuring device according to claim 3, characterized in that: A deceleration assembly (3) is arranged on the outer surface of the support plate (1), the deceleration assembly (3) comprises a slope (301), the outer surface of the slope (301) is fixedly connected to the outer surface of the support plate (1), a plurality of slide grooves (302) are arranged on the top of the slope (301), a connecting groove (303) is arranged on the outer surface of the slope (301), and a second cylinder (304) is arranged on the inner bottom surface of the connecting groove (303).

5. The motor vehicle detection line axle load measuring device according to claim 4, characterized in that: A lifting block (305) is fixedly mounted on the top of the second cylinder (304), a plurality of blocking rods (306) are fixedly connected to the top of the lifting block (305), the outer surfaces of the plurality of blocking rods (306) are respectively slidably connected to the inside of the plurality of slide grooves (302), a support rod (307) is fixed to the top of the support plate (1) near one side edge, and a radar speed meter (308) is arranged on the top of the support rod (307).

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