A vehicle-mounted dynamic weighing and monitoring device

Abstract

The present invention discloses a vehicle on-vehicle dynamic weighing and monitoring device, which relates to the technical field of weighing. It includes a detection mechanism. The detection mechanism includes a bearing box. Hydraulic cylinders are respectively arranged on the left and right side plates of the bearing box. A sleeve piece is installed at the output end of the hydraulic cylinder. Two symmetrical push blocks slide on the upper end of the bottom plate of the bearing box. Adjacent push blocks and the sleeve piece are connected through a strain gauge. An inclined surface one is arranged at the upper end of the push block. Two inclined surfaces one form a V-shaped surface. A pressing block is placed on the V-shaped surface. A convex block is arranged at the center of the upper end of the pressing block. A through hole is arranged at the center of the top plate of the bearing box. The convex block penetrates through the through hole. An annular opening is formed between the through hole and the outer periphery of the convex block. A lower connecting seat for fixing with the end of the leaf spring is arranged at the lower end of the bottom end of the bearing box. Through the design of the weight transfer structure of the pressing block and the push block, the loss in the weight transfer process is greatly reduced, the dynamic change of the vehicle load weight can be accurately captured, and the weight of the vehicle dynamic change can be fully and accurately transferred.

Description

Technical Field

[0001] The present invention relates to the technical field of weighing, and specifically to a vehicle-mounted dynamic weighing and monitoring device. Background Art

[0002] In the field of transportation, vehicle dynamic weighing and monitoring is an important link to ensure road safety and standardize freight management. Traditional dynamic weighing systems mainly rely on road-embedded sensors (such as piezoelectric sensors, bending plate sensors, etc.) to calculate the total weight by measuring the axle loads when the vehicle passes through a specific section. However, there are often problems:

[0003] (1) Spatial limitation: It needs to be fixedly installed on a specific section and cannot cover the entire road network, resulting in a large number of vehicles detouring to avoid detection;

[0004] (2) Environmental sensitivity: The sensors are easily affected by rain, snow, temperature changes and road surface wear, and the accuracy drops significantly after long-term use;

[0005] (3) Large data error: The dynamic load fluctuations (such as bumps, braking, acceleration) when the vehicle passes at high speed will cause the measured value to deviate from the true static load, and the error can exceed ±15% especially under complex road conditions.

[0006] Therefore, it is necessary to provide a vehicle-mounted dynamic weighing and monitoring device to solve the problems raised in the above background art. Summary of the Invention

[0007] To achieve the above object, the present invention provides the following technical solution: A vehicle-mounted dynamic weighing and monitoring device includes a detection mechanism. The detection mechanism includes a bearing box. Hydraulic cylinders are respectively arranged on the left and right side plates of the bearing box. A sleeve is installed at the output end of the hydraulic cylinder. Two symmetrical push blocks slide on the upper end of the bottom plate of the bearing box. Adjacent push blocks and the sleeve are connected by a strain gauge. An inclined surface one is provided at the upper end of the push block. Two inclined surfaces one form a V-shaped surface. A pressure block is placed on the V-shaped surface. A convex block is provided at the center of the upper end of the pressure block. A through hole is provided at the center of the top plate of the bearing box. The convex block penetrates through the through hole. A ring-shaped hole is formed between the through hole and the outer circumference of the convex block. An upper connecting seat for fixing to the vehicle frame is provided at the upper end of the convex block. A lower connecting seat for fixing to the end of the leaf spring is provided at the lower end of the bearing box bottom.

[0008] As a preferred technical solution of the present invention, inclined surfaces two are respectively provided on the left and right sides of the lower end of the pressure block. The included angle between the two inclined surfaces two is the same as the included angle of the V-shaped surface.

[0009] As a preferred technical solution of the present invention, an inclined slideway is provided on the inclined surface one, and a ball two that cooperates with the inclined slideway in movement is provided on the inclined surface two.

[0010] As a preferred technical solution of the present invention, a second smooth track is provided on the lower end surface of the top plate of the carrying box, and a fourth ball is provided on the upper end surface of the pressing block and is in cooperative movement with the second smooth track.

[0011] As a preferred technical solution of the present invention, sliding surface grooves are provided on the front and rear side plates of the carrying box, and third balls are respectively provided on the front and rear side surfaces of the pressing block and are in cooperative movement with the sliding surface grooves.

[0012] As a preferred technical solution of the present invention, a first smooth track is provided on the upper end surface of the bottom plate of the carrying box, and a first ball is provided on the lower end surface of the pushing block and is in cooperative movement with the first smooth track.

[0013] As a preferred technical solution of the present invention, sliding frames for slidably connecting with the sleeve pieces are respectively provided on the left and right side plates of the carrying box.

[0014] As a preferred technical solution of the present invention, the included angle between the first inclined surface and the horizontal plane is set to 45°.

[0015] As a preferred technical solution of the present invention, the axes of the output ends of the two hydraulic cylinders and the centers of gravity of the two pushing blocks are on the same straight line.

[0016] Compared with the prior art, the present invention provides a vehicle on-vehicle dynamic weighing and monitoring device, which has the following beneficial effects:

[0017] In the present invention, through the structural design of the detection mechanism, the weight of the vehicle on-vehicle is transmitted to the two pushing blocks through the pressing block. By monitoring the data of the two pushing blocks through the strain gauges, obtaining the total value of the strain gauges after vehicle loading and the total value of the strain gauges before vehicle loading, the weight of the vehicle on-vehicle can be known. By monitoring the change values of each strain gauge, the weight change of the vehicle on-vehicle can be mastered, and it is also convenient to judge the control of the vehicle driving speed for safe driving. Moreover, during the vehicle driving process, the weight of the vehicle on-vehicle can be dynamically weighed, so as to master the weight data of the vehicle on-vehicle.

[0018] In the present invention, through the weight transmission structural mode between the pressing block and the pushing block, the weight transmission effect is enhanced, the loss during the weight transmission process is greatly reduced, the dynamic change of the weight during the vehicle on-vehicle process can be accurately captured, and the dynamically changing weight of the vehicle on-vehicle can be fully and accurately transmitted, so as to select the true and effective data of the vehicle on-vehicle weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic installation structure diagram of the monitoring device of the present invention;

[0020] Figure 2 It is a schematic structure diagram of the monitoring device of the present invention;

[0021] Figure 3Schematic diagram of the internal structure of the monitoring device of the present invention;

[0022] Figure 4 Front view structure schematic diagram of the monitoring device of the present invention;

[0023] Figure 5 Cross-sectional structure schematic diagram of the monitoring device of the present invention;

[0024] Figure 6 For the explosion of the monitoring device of the present invention Figure 1 ;

[0025] Figure 7 For the explosion of the monitoring device of the present invention Figure 2 ;

[0026] In the figure: 1, vehicle frame; 2, leaf spring; 3, detection mechanism; 31, bearing box; 32, hydraulic cylinder; 33, sleeve piece; 34, strain gauge; 35, push block; 36, pressing block; 37, upper connecting seat; 38, lower connecting seat; 311, smooth track 1; 312, sliding frame; 313, sliding surface groove; 314, through port; 315, smooth track 2; 351, inclined surface 1; 352, inclined slideway; 353, ball 1; 361, inclined surface 2; 362, ball 2; 363, ball 3; 364, ball 4; 365, convex block. Specific embodiments

[0027] Referring to Figures 1 - 7 , the present invention provides a technical solution: a vehicle on-vehicle dynamic weighing monitoring device, including a detection mechanism 3, the detection mechanism 3 includes a bearing box 31, hydraulic cylinders 32 are respectively arranged on the left and right side plates of the bearing box 31, a sleeve piece 33 is installed at the output end of the hydraulic cylinder 32, two symmetrical push blocks 35 slide on the upper end of the bottom plate of the bearing box 31, the adjacent push blocks 35 and the sleeve piece 33 are connected by a strain gauge 34, an inclined surface 1 351 is arranged at the upper end of the push block 35, two inclined surfaces 1 351 form a V-shaped surface, a pressing block 36 is placed on the V-shaped surface, a convex block 365 is arranged at the center of the upper end of the pressing block 36, a through port 314 is arranged at the center of the top plate of the bearing box 31, the convex block 365 penetrates through the through port 314, a ring port is formed between the through port 314 and the outer circumference of the convex block 365, an upper connecting seat 37 for fixing to the vehicle frame 1 is arranged at the upper end of the convex block 365, and a lower connecting seat 38 for fixing to the end of the leaf spring 2 is arranged at the lower end of the bottom end of the bearing box 31.

[0028] In this embodiment, the annular opening provided between the through port 314 and the convex block 365 can keep the outer peripheral side wall of the convex block 365 in a non-contact state with the carrying box 31. That is to say, when the vehicle is running, if the vehicle speed changes, the goods carried by the vehicle will generate an inertial force, which is transmitted to the upper connecting seat 37, the convex block 365 and the pressing block 36, causing the upper connecting seat 37, the convex block 365 and the pressing block 36 to have a micro variable displacement along the traveling direction. Through the design of the annular opening, during this process, there can always be a certain gap between the convex block 365 and the carrying box 31, so that the inertial force can be fully transmitted to the upper connecting seat 37, the convex block 365 and the pressing block 36.

[0029] In this embodiment, second inclined surfaces 361 are respectively provided on the left and right sides of the lower end of the pressing block 36, and the included angle between the two second inclined surfaces 361 is the same as the included angle of the V-shaped surface, so that when the pressing block 36 receives the weight carried by the vehicle, the process of transmitting the acting force and the micro variable displacement to the two pushing blocks 35 is more stable and accurate.

[0030] In this embodiment, an inclined slideway 352 is provided on the first inclined surface 351, and a second ball 362 that cooperates with the inclined slideway 352 in movement is provided on the second inclined surface 361, so that the process of generating a micro variable displacement between the first inclined surface 351 and the second inclined surface 361 is smoother, greatly reducing the frictional acting force between the first inclined surface 351 and the second inclined surface 361, and enabling the acting force received by the pressing block 36 to be accurately transmitted to the pushing block 35.

[0031] In this embodiment, a second smooth path 315 is provided on the lower end surface of the top plate of the carrying box 31, and a fourth ball 364 that cooperates with the second smooth path 315 in movement is provided on the upper end surface of the pressing block 36, so that during the process of the pressing block 36 generating a micro variable displacement, the resistance suffered by the pressing block 36 during the lateral change process is greatly reduced, and the acting force and the micro variable displacement change received by the pressing block 36 can be fully and accurately transmitted to the pushing block 35.

[0032] In this embodiment, sliding surface grooves 313 are provided on the front and rear side plates of the carrying box 31, and third balls 363 that cooperate with the sliding surface grooves 313 in movement are respectively provided on the front and rear side surfaces of the pressing block 36, so that during the process of the pressing block 36 generating a micro variable displacement, the resistance suffered by the pressing block 36 during the vertical change process is greatly reduced, and the acting force and the micro variable displacement change received by the pressing block 36 can be fully and accurately transmitted to the pushing block 35.

[0033] In this embodiment, a first smooth track 311 is provided on the upper end surface of the bottom plate of the bearing box 31, and a first ball 353 that cooperates with the first smooth track 311 is provided on the lower end surface of the push block 35, so that the process of the micro variable displacement of the push block 35 on the upper end surface of the bottom plate of the bearing box 31 is more smooth, greatly reducing the frictional force between the push block 35 and the upper end surface of the bottom plate of the bearing box 31, enabling the force received by the push block 35 and the micro variable displacement to be accurately transmitted to the strain gauge 34.

[0034] In this embodiment, sliding frames 312 for slidably connecting with the sleeve piece 33 are respectively provided on the left and right side plates of the bearing box 31, so as to reduce the load of the eccentric shaft acting force of the sleeve piece 33 on the output end of the hydraulic cylinder 32, improve the protection effect on the hydraulic cylinder 32, and at the same time, facilitate guiding the change process of the micro variable displacement of the strain gauge 34 and the push block 35.

[0035] In this embodiment, the included angle between the first inclined surface 351 and the horizontal plane is set to 45°, so as to facilitate calculating the change of the vehicle's on-vehicle dynamic weight, and at the same time, is conducive to the transmission accuracy and transmission smoothness of the acting force and the micro variable change amount between the push block 35 and the pressing block 36.

[0036] In this embodiment, the axes of the output ends of the two hydraulic cylinders 32 and the centers of gravity of the two push blocks 35 are on the same straight line, so as to improve the accuracy of data transmission and the stable strength of the structure.

[0037] In specific implementation, it includes the following steps:

[0038] Step 1: Debug the detection mechanism 3, and record the gravity of the upper connecting seat 37, the convex block 365, and the pressing block 36 , the pressure data of the strain gauge 34 facing the vehicle head is recorded as , the pressure data of the strain gauge 34 facing the vehicle tail is recorded as , synchronously control the two push blocks 35 to be in a contacting state through the two hydraulic cylinders 32, and there is no acting force between the two push blocks 35. At this time, the fourth ball 364 also contacts with the second smooth track 315 in cooperation, and there is no acting force between the pressing block 36 and the lower end surface of the top plate of the bearing box 31; among them, when the two push blocks 35 just contact and the fourth ball 364 just contacts with the second smooth track 315, at this time, , and , that is to say, through the settings of the first inclined surface 351 and the second inclined surface 361, the normal force exerted on the push block 35 facing the vehicle head by the gravity is recorded as , the horizontal component of the normal force , that is , the normal force exerted on the push block 35 facing the vehicle tail by the gravity is recorded as , The horizontal component of the normal force , that is , and , that is , The magnitude of is equal to the recorded in the horizontal direction, that is , The magnitude of L is equal to the recorded in the horizontal direction, that is , therefore, for the debugging of the contact state of the two pusher blocks 35, it can be assisted by observing the and data. First, synchronously control the two pusher blocks 35 through the two hydraulic cylinders 32 so that initially and change synchronously, monitor the and data until and The total value of gradually increases to be greater than , indicating that the two pusher blocks 35 are in contact and there is an interaction force between the two pusher blocks 35, and the ball four 364 on the pressing block 36 also just fits and contacts with the smooth track two 315. At this time, synchronously control the two pusher blocks 35 through the two hydraulic cylinders 32, and observe the and until the total value is equal to , then it indicates that the two pusher blocks 35 just contact and there is no force between the two pusher blocks 35, and the gravity of the pressing block 36 acts on the two pusher blocks 35, and the gravity is equal to the monitored and total value, completing the initial debugging of the positions of the pressing block 36 and the two pusher blocks 35;

[0039] Step two: Fix the upper connecting seat 37 to the vehicle frame 1 and fix the lower connecting seat 38 to the end of the leaf spring 2;

[0040] Step three: When the vehicle is unloaded and stationary, monitor the and values at this time, and record them as the initial and the initial , and The total value of is recorded as , when the vehicle is loaded and stationary, monitor the monitored and The total value of is recorded as , and the weight carried by the vehicle;

[0041] Step Four: During vehicle driving, by monitoring and dynamic values, the vehicle's on-vehicle weight can be dynamically monitored. Among them, when there are changes in the independent dynamic values of and , the change in the on-vehicle weight center can be judged. That is to say, when there are changes in the values of and , they are respectively recorded as and . That is, if the value of is greater than , the value of will be less than . At this time, the on-vehicle weight center changes and moves towards the direction where is located. If the value of is less than , the value of will be greater than . At this time, the on-vehicle weight center changes and moves towards the direction where is located. If the value of is equal to , the value of will be equal to . At this time, the on-vehicle weight center has no change. If the total value of and is equal to the total value of and , the on-vehicle weight has not changed. If the total value of and is not equal to the total value of and , then the on-vehicle weight has changed. That is to say, by monitoring and , the state of the vehicle's driving speed can be known, whether the vehicle is moving at a constant speed or changing speed. At the same time, through and the magnitude of the change, it is convenient to judge the vehicle's on-vehicle weight situation, which helps the vehicle to drive safely dynamically.

[0042] The above is only a preferred specific embodiment of the invention, but the protection scope of the invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the invention, according to the technical solution of the invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the invention.

Claims

1. A vehicle-mounted dynamic weighing monitoring device, comprising a detection mechanism (3), characterized in that: The detection mechanism (3) comprises a carrying box (31), and hydraulic cylinders (32) are respectively arranged on the left and right side plates of the carrying box (31), and a sleeve (33) is installed at the output end of the hydraulic cylinder (32). Two symmetrical push blocks (35) are slidably arranged on the upper end of the bottom plate of the carrying box (31), and the adjacent push blocks (35) are connected to the sleeve (33) through a strain gauge (34). An inclined surface (351) is arranged on the upper end of the push block (35), and the two inclined surfaces (351) form a V-shaped surface, and the V-shaped surface A pressing block (36) is placed, a convex block (365) is provided at the center of the upper end of the pressing block (36), a through hole (314) is provided at the center of the top plate of the carrying box (31), the convex block (365) passes through the through hole (314), the through hole (314) and the outer periphery of the convex block (365) form a ring, an upper connecting seat (37) for fixing to the frame (1) is provided at the upper end of the convex block (365), and a lower connecting seat (38) for fixing to the end of the leaf spring (2) is provided at the lower end of the bottom end of the carrying box (31); The left and right sides of the lower end of the pressing block (36) are respectively provided with inclined surfaces 2 (361), and the included angle of the two inclined surfaces 2 (361) is the same as the included angle of the V-shaped surface; The angle between the inclined plane 1 (351) and the horizontal plane is set to 45°.

2. A vehicle-mounted dynamic weighing monitoring device according to claim 1, characterized in that: The first inclined surface (351) is provided with an inclined slideway (352), and the second inclined surface (361) is provided with a second ball (362) that moves in coordination with the inclined slideway (352).

3. A vehicle-mounted dynamic weighing monitoring device according to claim 1, characterized in that: The lower end surface of the top plate of the bearing box (31) is provided with a second smooth path (315), and the upper end surface of the pressing block (36) is provided with a fourth ball (364) that moves in coordination with the second smooth path (315).

4. A vehicle-mounted dynamic weighing monitoring device according to claim 1, characterized in that: The front and rear side plates of the carrying box (31) are both provided with sliding grooves (313), and the front and rear side surfaces of the pressing block (36) are respectively provided with ball bearings (363) that move in coordination with the sliding grooves (313).

5. The vehicle-mounted dynamic weighing monitoring device according to claim 1, characterized in that: The upper end surface of the bottom plate of the bearing box (31) is provided with a smooth track (311), and the lower end surface of the push block (35) is provided with a ball (353) that moves in coordination with the smooth track (311).

6. The vehicle-mounted dynamic weighing monitoring device according to claim 1, characterized in that: The left and right side plates of the carrying box (31) are also respectively provided with sliding frames (312) for sliding connection with the sleeve (33).

7. The vehicle-mounted dynamic weighing monitoring device according to claim 1, characterized in that: The axis centers of the output ends of the two hydraulic cylinders (32) and the gravity centers of the two push blocks (35) are on the same straight line.

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