Vehicle-mounted dynamic weighing monitoring device

Abstract

The invention discloses a vehicle-mounted dynamic weighing monitoring device, and relates to the technical field of weighing, and the device comprises a detection mechanism, the detection mechanism comprises a bearing box, the left and right side plates of the bearing box are respectively provided with a hydraulic cylinder, the output end of each hydraulic cylinder is provided with a sleeve sheet, and the upper end of the bottom plate of the bearing box is provided with two symmetrical push blocks in a sliding manner. The upper ends of the push blocks are provided with first inclined faces, the two first inclined faces form a V-shaped face, a pressing block is placed on the V-shaped face, a protruding block is arranged in the center of the upper end of the pressing block, a through opening is formed in the center of a top plate of the bearing box, the protruding block penetrates through the through opening, and the periphery of the through opening and the periphery of the protruding block form an annular opening. A lower connecting seat fixed with the end part of the steel plate spring is arranged at the lower end of the bottom end of the bearing box. Through the weight transmission structure design of the pressing block and the pushing block, loss in the weight transmission process is greatly reduced, the dynamic change of the vehicle-mounted weight can be accurately captured, and the vehicle-mounted dynamically-changed weight can be sufficiently and accurately transmitted.

Description

Technical Field

[0001] The invention relates to the field of weighing technology, in particular to a vehicle-mounted dynamic weighing monitoring device. Background Art

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

[0003] (1) Spatial limitations: The system needs to be installed on a specific road section and cannot cover the entire road network, causing a large number of vehicles to detour to avoid detection.

[0004] (2) Environmental sensitivity: The sensor is easily affected by rain, snow, temperature changes and road wear, and its accuracy decreases significantly after long-term use;

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

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

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vehicle-mounted dynamic weighing monitoring device, including a detection mechanism, the detection mechanism including a load-bearing box, hydraulic cylinders are respectively provided on the left and right side plates of the load-bearing box, a sleeve is installed on the output end of the hydraulic cylinder, two symmetrical push blocks are slidably arranged on the upper end of the bottom plate of the load-bearing box, adjacent push blocks and the sleeve are connected to the sleeve through a strain gauge, an inclined surface is provided on the upper end of the push block, the two inclined surfaces form a V-shaped surface, a pressure block is placed on the V-shaped surface, a protrusion is provided on the center of the upper end of the pressure block, a through opening is provided in the center of the top plate of the load-bearing box, the protrusion passes through the through opening, the through opening and the outer periphery of the protrusion form a ring opening, an upper connecting seat for fixing to a vehicle frame is provided on the upper end of the protrusion, and a lower connecting seat for fixing to the end of a leaf spring is provided on the lower end of the bottom end of the load-bearing box.

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

[0009] As a preferred technical solution of the present invention, an inclined slide is provided on the first inclined surface, and a second ball bearing that moves in coordination with the inclined slide is provided on the second inclined surface.

[0010] As a preferred technical solution of the present invention, a second smooth path is provided on the lower end surface of the top plate of the bearing box, and a fourth ball bearing which moves in coordination with the second smooth path is provided on the upper end surface of the pressing block.

[0011] As a preferred technical solution of the present invention, the front and rear side plates of the carrying box are both provided with sliding grooves, and the front and rear side surfaces of the pressing block are respectively provided with ball bearings three that move in coordination with the sliding grooves.

[0012] As a preferred technical solution of the present invention, a smooth track is provided on the upper surface of the bottom plate of the bearing box, and a ball bearing that cooperates with the smooth track is provided on the lower surface of the push block.

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

[0014] As a preferred technical solution of the present invention, the angle between the inclined plane 1 and the horizontal plane is set to 45°.

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

[0016] Compared with the prior art, the present invention provides a vehicle-mounted dynamic weighing 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 is transmitted to the two push blocks through the pressure block, and the data of the two push blocks are monitored by the strain gauge. The total value of the strain gauge after being mounted on the vehicle and the total value of the strain gauge before being mounted on the vehicle are obtained, so as to know the weight of the vehicle. By monitoring the change value of each strain gauge, the change of the weight of the vehicle can be grasped, and it is also convenient to judge the control of the vehicle's driving speed for safe driving. In the process of vehicle driving, the weight of the vehicle can be dynamically weighed, so as to grasp the vehicle's weight data.

[0018] The weight transfer structure between the pressure block and the push block in the present invention enhances the weight transfer effect, greatly reduces the loss in the weight transfer process, can accurately capture the dynamic changes of the weight during the vehicle's on-board process, and can fully and accurately transfer the dynamically changing weight of the vehicle, so as to select the real and effective data of the vehicle's on-board weight. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3It is a schematic diagram of the internal structure of the monitoring device of the present invention;

[0022] Figure 4 It is a schematic diagram of the front view structure of the monitoring device of the present invention;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the monitoring device of the present invention;

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

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

[0026] In the figure: 1. frame; 2. leaf spring; 3. detection mechanism; 31. bearing box; 32. hydraulic cylinder; 33. sleeve; 34. strain gauge; 35. push block; 36. pressure block; 37. upper connecting seat; 38. lower connecting seat; 311. smooth path one; 312. slide frame; 313. slide groove; 314. through port; 315. smooth path two; 351. inclined surface one; 352. inclined slideway; 353. ball one; 361. inclined surface two; 362. ball two; 363. ball three; 364. ball four; 365. bump. DETAILED DESCRIPTION

[0027] Reference Figure 1-Figure 7 The present invention provides a technical solution: a vehicle-mounted dynamic weighing monitoring device, comprising a detection mechanism 3, the detection mechanism 3 comprising a bearing box 31, a hydraulic cylinder 32 is respectively provided on the left and right side plates of the bearing box 31, a sleeve 33 is installed on 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 bearing box 31, adjacent push blocks 35 are connected to the sleeve 33 through a strain gauge 34, an inclined surface 351 is provided on the upper end of the push block 35, the two inclined surfaces 351 form a V-shaped surface, a pressure block 36 is placed on the V-shaped surface, a protrusion 365 is provided at the center of the upper end of the pressure block 36, a through opening 314 is provided at the center of the top plate of the bearing box 31, the protrusion 365 passes through the through opening 314, the through opening 314 and the outer periphery of the protrusion 365 form a ring opening, an upper end of the protrusion 365 is provided with an upper connecting seat 37 for fixing to the frame 1, 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 bearing box 31.

[0028] In this embodiment, the ring mouth arranged between the through opening 314 and the protrusion 365 can make the outer peripheral side wall of the protrusion 365 and the carrying box 31 in a non-contact state. That is to say, when the vehicle is running, if the speed of the vehicle changes, the cargo on the vehicle will generate inertia force, and the inertia force will be transmitted to the upper connecting seat 37, the protrusion 365 and the pressure block 36, so that the upper connecting seat 37, the protrusion 365 and the pressure block 36 have micro-displacement along the direction of travel. Through the design of the ring mouth, in this situation, a certain gap can be maintained between the protrusion 365 and the carrying box 31, so that the inertia force can be fully transmitted to the upper connecting seat 37, the protrusion 365 and the pressure block 36.

[0029] In this embodiment, inclined surfaces 361 are respectively provided on the left and right sides of the lower end of the pressure block 36, and the included angle of the two inclined surfaces 361 is the same as the included angle of the V-shaped surface, so that when the pressure block 36 is subjected to the weight of the vehicle, the pressure block 36 can transfer the force and micro-displacement to the two push blocks 35 more stably and accurately.

[0030] In this embodiment, an inclined slide 352 is provided on the inclined surface 1 351, and a ball 2 362 is provided on the inclined surface 361 for movement in cooperation with the inclined slide 352, so that the process of generating micro-displacement between the inclined surface 1 351 and the inclined surface 2 361 is smoother, and the friction force between the inclined surface 1 351 and the inclined surface 2 361 is greatly reduced, so that the force exerted on the pressure block 36 can be accurately transmitted to the push block 35.

[0031] In this embodiment, a second smooth path 315 is provided on the lower end surface of the top plate of the supporting box 31, and a fourth ball 364 is provided on the upper end surface of the pressing block 36 to move in cooperation with the second smooth path 315, so that when the pressing block 36 generates a micro-displacement, the resistance to the lateral change of the pressing block 36 is greatly reduced, so that the force and micro-displacement change of the pressing block 36 can be fully and accurately transmitted to the pushing block 35.

[0032] In this embodiment, the front and rear side panels of the carrying box 31 are provided with sliding grooves 313, and the front and rear side surfaces of the pressure block 36 are respectively provided with ball bearings 363 that cooperate with the sliding grooves 313 to greatly reduce the resistance to the vertical change of the pressure block 36 during the process of the pressure block 36 generating a micro-displacement, so that the force and micro-displacement changes on the pressure block 36 can be fully and accurately transmitted to the push block 35.

[0033] In this embodiment, a smooth path 311 is provided on the upper end surface of the bottom plate of the carrying box 31, and a ball 353 is provided on the lower end surface of the push block 35 for movement in cooperation with the smooth path 311, so that the process of micro-displacement of the push block 35 on the upper end surface of the bottom plate of the carrying box 31 is smoother, and the friction force between the push block 35 and the upper end surface of the bottom plate of the carrying box 31 is greatly reduced, so that the force and micro-displacement received by the push block 35 can be accurately transmitted to the strain gauge 34.

[0034] In this embodiment, the left and right side panels of the supporting box 31 are respectively provided with sliding frames 312 for sliding connection with the sleeve 33, so as to reduce the load of the eccentric force of the sleeve 33 on the output end of the hydraulic cylinder 32, improve the protection effect of the hydraulic cylinder 32, and at the same time, it is beneficial to guide the change process of the micro-displacement of the strain gauge 34 and the push block 35.

[0035] In this embodiment, the angle between the inclined plane 351 and the horizontal plane is set to 45°, so as to facilitate the calculation of the dynamic weight change of the vehicle, and at the same time, it is beneficial to the transmission accuracy and smoothness of the force and micro-variable change between the push block 35 and the pressure block 36.

[0036] In this embodiment, 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, so as to improve the accuracy of data transmission and the stability and 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 connection seat 37, the protrusion 365 and the pressing block 36 , the pressure data of the strain gauge 34 facing the front of the vehicle is recorded as , the pressure data of the strain gauge 34 facing the rear of the vehicle is recorded as , the two push blocks 35 are synchronously regulated by the two hydraulic cylinders 32 to be in a contact state, and there is no force between the two push blocks 35. At this time, the ball four 364 also contacts with the smooth path 2 315, and there is no force between the pressure 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, the ball four 364 also just contacts with the smooth path 2 315, at this time, ,and That is, through the setting of the inclined plane 1 351 and the inclined plane 2 361, gravity The normal force applied to the push block 35 towards the front of the vehicle is recorded as , Horizontal component of normal force ,Right now ,gravity The normal force applied to the push block 35 towards the rear of the vehicle is recorded as , Horizontal component of normal force ,Right now ,and ,Right now , The size of the record is related to the horizontal Equal, that is , The size of L is related to the horizontal direction of the record. Equal, that is Therefore, for debugging the contact state of the two push blocks 35, it is possible to observe and First, the two hydraulic cylinders 32 are used to synchronously control the two push blocks 35 so that the initial and Synchronous changes, monitoring and data until and The total value gradually increases to greater than When the two push blocks 35 are in contact, there is an interaction force between the two push blocks 35, and the ball 4 364 on the pressure block 36 is just in contact with the smooth track 2 315. At this time, the two push blocks 35 are synchronously regulated by the two hydraulic cylinders 32. and The total value is equal to When , it indicates that the two push blocks 35 are just touching, and there is no force between the two push blocks 35, and the gravity of the pressing block 36 Acting on the two push blocks 35, gravity Convenience and monitoring and The total value of is equal to that of the pressure block 36 and the two push blocks 35, and the initial debugging is completed;

[0039] Step 2: By fixing the upper connecting seat 37 to the frame 1, the lower connecting seat 38 is fixedly connected to the end of the leaf spring 2;

[0040] Step 3: When the vehicle is unloaded and stationary, monitor and The values ​​of and initial , and The total value is recorded as When the vehicle is loaded and the vehicle is stationary, the monitoring and The total value is recorded as , the weight of the vehicle ;

[0041] Step 4: When the vehicle is driving, monitor and The dynamic value of the vehicle load can be dynamically monitored. and When the independent dynamic value of and When the value of changes, they are recorded as and , that is, if The value is greater than hour, The value is less than At this time, the vehicle weight center is toward the monitoring The direction of movement changes, if The value is less than hour, The value is greater than At this time, the vehicle weight center is toward the monitoring The direction of movement changes, if The value is equal to hour, The value of is equal to At this time, the vehicle weight center does not change. and The total value is equal to and The total value of the vehicle weight No change, if and The total value is not equal to and When the total value of changes, that is, through and Through monitoring, we can know the state of vehicle speed, whether the vehicle is in a constant speed or variable speed. and The size of the change in the amount is convenient for judging the vehicle's weight and helps the vehicle's dynamic and safe driving.

[0042] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the invention, which should be covered by the protection scope of the present 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 pressure block (36) is placed, and a protrusion (365) is provided at the center of the upper end of the pressure block (36). A through hole (314) is provided at the center of the top plate of the support box (31). The protrusion (365) passes through the through hole (314). The through hole (314) and the outer periphery of the protrusion (365) form a ring. An upper connecting seat (37) for fixing to the frame (1) is provided at the upper end of the protrusion (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 support box (31).

2. A vehicle-mounted dynamic weighing monitoring device according to claim 1, characterized in that: 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.

3. A vehicle-mounted dynamic weighing monitoring device according to claim 2, 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).

4. 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).

5. The 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).

6. 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).

7. 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).

8. The vehicle-mounted dynamic weighing monitoring device according to claim 1, characterized in that: The angle between the inclined plane 1 (351) and the horizontal plane is set to 45°.

9. 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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