CN111637958A

CN111637958A - Real-time vehicle-mounted weighing system

Info

Publication number: CN111637958A
Application number: CN202010625465.1A
Authority: CN
Inventors: 赵纯源; 王豪伟; 李春明; 郑拴宁; 杨溢; 赵景柱
Original assignee: Institute of Urban Environment of CAS
Current assignee: Institute of Urban Environment of CAS
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-09-08

Abstract

The invention relates to the field of real-time measurement of vehicle load. The invention discloses a real-time vehicle-mounted weighing system which comprises a vehicle body main beam, an upper beam, 4 parallel limiters, at least 4 weighing mechanisms and an overload protection mechanism, wherein the upper beam is arranged on the vehicle body main beam through the weighing mechanisms, the 4 parallel limiters are distributed between the vehicle body main beam and the upper beam and used for limiting the parallel relative movement of the upper beam relative to the vehicle body main beam, and the overload protection mechanism is used for limiting the maximum distance of the vertical approaching movement of the upper beam relative to the vehicle body main beam so as to carry out overload protection on the weighing mechanisms. The invention can realize real-time weighing of the load, and has high consistency and accuracy, high safety of the automobile and stability of the sensor, and simpler structure.

Description

Real-time vehicle-mounted weighing system

Technical Field

The invention belongs to the field of real-time measurement of vehicle load, and particularly relates to a real-time vehicle-mounted weighing system.

Background

During the transportation process of the truck, the weight of the cargos before and after passing through each loading and unloading point needs to be monitored in real time. For example, before and after the garbage collection vehicle is loaded and unloaded through each garbage collection station, the cargo weight of the garbage collection vehicle needs to be monitored in real time.

There are currently some methods of weighing a load in real time: mainly fall into two main categories, one kind is on fixing the sensor to current vehicle load-carrying members, realizes weighing to car loading capacity through monitoring load-carrying members's deformation, as the patent publication: in cn201910644078.x, a sensor is attached to a leaf spring of an automobile, and the load of the automobile is weighed by monitoring the deformation of the leaf spring. The method has the advantages of simple installation and small modification amount, but has the defect of poor consistency and precision because the sensor is pasted on the steel plate spring, the consistency and the stability of the installation process have great influence on the consistency and the precision of the whole sensor, and the consistency and the precision of the whole sensor are also influenced by factors such as the fact that the material of the spring plate cannot be kept consistent.

The other type mainly loads the weight of the hopper directly on the sensor, so that relatively high consistency and accuracy can be achieved due to the fact that the load of the hopper is directly loaded on the sensor, but a relatively complex auxiliary structure is needed, and otherwise the safety of the automobile and the stability of the sensor are affected. As disclosed in the patent: CN201220394132.3, directly establish ties the sensor to the leaf spring position of car, realized direct weighing, improved the holistic uniformity and the accuracy of sensor, do not consider the overload protection to the sensor, this will reduce the life-span of sensor, influence the stability of sensor.

Disclosure of Invention

The invention aims to provide a real-time vehicle-mounted weighing device to solve the technical problems.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a real-time on-vehicle weighing system, includes automobile body girder, the upper beam, 4 parallel limiters, 4 at least weighing machine construct and overload protection mechanism, the upper beam passes through weighing machine and sets up on the automobile body girder, 4 parallel limiters distribute and set up between automobile body girder and upper beam for the restriction upper beam carries out overload protection with weighing machine for the perpendicular maximum distance that is close to the removal of automobile body girder for the upper beam.

Further, parallel limiter includes oblique connecting rod, go up stores pylon and lower seat, goes up the fixed setting of stores pylon on the upper beam, the lower seat is fixed to be set up on the automobile body girder, the both ends of oblique connecting rod rotate respectively and set up on last stores pylon and lower seat, 4 parallel limiters are two liang respectively and set up in the both sides and the one-to-one of automobile body girder, two sets of parallel limiter groups around constituting, two oblique connecting rods of every parallel limiter group constitute one with two hypotenuses of the isosceles trapezoid that the upper beam is parallel, lie in the automobile body girder with two oblique connecting rods of the parallel limiters of one side constitute one with two hypotenuses of upper beam vertically parallelogram, and this parallelogram's lower limb is parallel with the upper beam.

Furthermore, the height of the parallelogram is less than one tenth of the length of the diagonal link.

Furthermore, the quantity of weighing mechanism is 4, and the upper beam is the rectangle structure, and 4 weighing mechanism set up respectively on four angles of upper beam.

Furthermore, the weighing mechanism and the overload protection mechanism comprise a weighing box, a sensor base, a weighing sensor, a push rod and pressure angle iron, the weighing box is fixedly arranged on a vehicle body main beam, the sensor base and the weighing sensor are arranged in the weighing box, the weighing sensor is fixedly arranged on the sensor base, the sensor base is arranged on the inner bottom surface of the weighing box, the top of the weighing box is movably penetrated through by the push rod, the lower end of the push rod is fixed on the weighing sensor, the top end of the push rod is fixedly connected with the pressure angle iron, the pressure angle iron is fixedly connected with the upper beam, the bottom of the pressure angle iron is arranged in a gap with the top of the weighing box, and when the overload occurs, the pressure angle iron is abutted against the top of the weighing box to limit the upper beam to continuously move close to the vehicle body main beam vertically so as to carry out overload.

Furthermore, the weighing box further comprises a stable spring, wherein the stable spring is sleeved on the ejector rod and abuts against the top of the weighing sensor and the top of the weighing box.

Further, pressure angle bar is equipped with the anticreep chimb, and the top of weighing the case is equipped with the anticreep baffle, and pressure angle bar is blockked and restrict its biggest upward movement distance by the anticreep baffle through the anticreep chimb.

Furthermore, the weighing box further comprises a damping mechanism, and the sensor base is arranged on the inner bottom surface of the weighing box through the damping mechanism.

Further, the damping mechanism is a damping spring.

Furthermore, an inner rod below the spring is arranged on the inner bottom surface of the weighing box, an inner rod above the spring is arranged on the bottom surface of the sensor base, and the upper end and the lower end of the damping spring are respectively sleeved on the inner rod below the spring and the inner rod above the spring.

The invention has the beneficial technical effects that:

the invention can realize real-time weighing of load, has high consistency and accuracy, improves the stability of the sensor by arranging the overload protection mechanism to carry out overload protection on the sensor of the weighing mechanism, improves the safety of the automobile by arranging 4 parallel limiters to limit the parallel relative movement of the upper beam relative to the main beam of the automobile body, and has relatively simple structure.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is a block diagram of an upper beam of an embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is a block diagram of a shock absorbing mechanism, a weighing mechanism and an overload protection mechanism in accordance with an embodiment of the present invention;

FIG. 5 is an exploded view of a shock absorbing mechanism, a weighing mechanism and an overload protection mechanism in accordance with an embodiment of the present invention;

FIG. 6 is an enlarged view of portion B of FIG. 1;

FIG. 7 is a diagram illustrating the structure of a parallel stop according to an embodiment of the present invention;

FIG. 8 is an exploded view of a parallel stop according to an embodiment of the present invention;

FIG. 9 is a schematic top view of 4 parallel position limiters according to an embodiment of the present invention;

FIG. 10 is a side view of two parallel position limiters on the same side according to an embodiment of the present invention.

Detailed Description

To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1-10, a real-time vehicle-mounted weighing system includes a vehicle main beam 1, an

upper beam

2, 4 parallel limiters 4, at least 4 weighing mechanisms, and an overload protection mechanism 3, wherein the upper beam 2 is disposed on the vehicle main beam 1 through the weighing mechanisms, the upper beam 2 is disposed in a gap with the vehicle main beam 1, and the vehicle main beam 1 is a supporting component of an automobile for supporting a cab 5 and fixing axles, leaf springs, and the like, and is a main beam of the automobile.

The upper beam 2 is used for bearing a car hopper, goods and the like and applying the weight of the goods, the car hopper and the weight of the goods on the weighing mechanism, and in the embodiment, the upper beam 2 is composed of two longitudinal beams 21 and 7 cross beams 22, is of a rectangular structure, is simple in structure and is stable and well-fixed, but is not limited to the structure, and in other embodiments, the upper beam 2 can be realized by adopting other structures.

4 parallel limiters 4 distribute between the main beam 1 and the upper beam 2 of the vehicle body, are used for limiting the parallel relative movement of the upper beam 2 relative to the main beam 1 of the vehicle body, but do not limit the vertical relative movement, improve the safety of the vehicle and do not influence the weighing accuracy.

In this embodiment, the parallel limiter 4 includes an inclined link 41, an upper hanger 42 and a lower base 43, the upper hanger 42 is fixed to the cross beam 22 of the upper beam 2 by screws through screw holes 421, the lower base 43 is fixed to the lower beam 1 by screws through screw holes 431, two ends of the inclined link 41 are respectively rotatably disposed on the upper hanger 42 and the lower base 43, specifically, the upper hanger 42 is provided with an upper hanger connecting shaft 422, the lower base 43 is provided with a lower base connecting shaft 432, the inclined link 41 includes an inclined link arm 411 and

shaft sleeves

412 and 413 disposed at two ends of the inclined link arm 411, the

shaft sleeves

412 and 413 are respectively rotatably disposed on the lower base connecting shaft 432 and the upper hanger connecting shaft 422, but not limited thereto, in other embodiments, two ends of the inclined link 41 can also be rotatably disposed on the upper hanger 42 and the lower base 43 by using other existing rotating structures.

Two liang settings respectively of 4 parallel limiter 4 are in the both sides and the one-to-one of automobile body girder 1, constitute two sets of parallel limiter group I and II around the constitution, two oblique connecting rods 41 of every parallel limiter group constitute one with two hypotenuses that the upper beam 2 is parallel isosceles trapezoid, it is concrete, the axial lead collineation of the axle sleeve 412 of two parallel limiters 4 of every parallel limiter group, constitute isosceles trapezoid upper limit line 44, the axial lead of the axle sleeve 413 of two parallel limiters 4 of every parallel limiter group is also collineation, constitute isosceles trapezoid lower limit line 45, the oblique connecting rod arm 411 of every parallel limiter group constitutes two hypotenuses of isosceles trapezoid, specifically as shown in fig. 9.

Because isosceles trapezoid has the stable characteristic similar to triangle-shaped, guaranteed that upper beam 2 can not be for the parallel relative movement of automobile body girder 1, realized upper beam 2 stability on the horizontal direction, improved the security of car.

The inclined connecting rods 41 of the two parallel limiters 4 positioned on the same side of the main beam 1 of the vehicle body form two inclined edges of a parallelogram vertical to the upper beam 2, and the lower edge line of the parallelogram is parallel to the upper beam 2. Specifically, the bushings 412 of the two parallel limiters 4 on the same side are held on the same plane parallel to the upper beam 2, and the connecting line therebetween constitutes the lower line 47 of the parallelogram. The sleeves 413 of the two parallel limiters 4 on the same side are also held on the same plane parallel to the upper beam 2, and the line between them constitutes the upper side line 46 of the parallelogram, and the diagonal link arm 411 of the two parallel limiters 4 on the same side constitutes the diagonal side of the parallelogram, as shown in fig. 10.

Two repeated parallelograms are formed on the left side and the right side of the main beam 1 of the vehicle body, so that the upper beam 2 can only move vertically relative to the main beam 1 of the vehicle body approximately, and the measurement accuracy is improved.

Preferably, in this embodiment, the height of the parallelogram is less than one tenth of the length of the inclined link 41, so that the elevation angle of the inclined link 41 approaches zero, and according to the characteristics of the parallelogram, when the elevation angle of the inclined link 41 is small, the relative vertical motion between the upper beam 2 and the vehicle body main beam 1 can be equivalent to only the relative vertical motion, and no relative parallel motion is provided, so that the stability in the horizontal direction between the upper beam 2 and the vehicle body main beam 1 is ensured, and the sensitivity to weight change in the vertical direction is also ensured.

The overload protection mechanism is used for limiting the maximum distance of the vertical approaching movement of the upper beam 2 relative to the main beam 1 of the vehicle body so as to carry out overload protection on the weighing mechanism.

In this embodiment, the number of the weighing mechanisms is 4, and the 4 weighing mechanisms are respectively disposed at four corners of the upper beam 1, so that the measurement accuracy and stability are improved, and the installation is easy. Correspondingly, the number of the overload protection mechanisms is also 4, and the overload protection mechanisms correspond to the 4 weighing mechanisms one by one.

In this embodiment, the weighing mechanism and the overload protection mechanism 3 include a weighing box 31, a sensor base 33, a weighing sensor 34, a push rod 36 and a pressure angle iron 37, the weighing box 31 is fixed to the vehicle body main beam 1 through a screw hole 314 by a screw, the sensor base 33 and the weighing sensor 34 are disposed in the weighing box 31, in this embodiment, the weighing box 31 is a square box structure with an opening on the outer side, but not limited thereto. The weighing sensor 34 is fixedly arranged on the sensor base 33, specifically, the top of the sensor base 33 is provided with a sensor support plate 332, the weighing sensor 34 is locked on the sensor support plate 332 through screws, the sensor base 33 is arranged on the inner bottom surface of the weighing box 31, the ejector rod 36 movably penetrates through the top of the weighing box 31, correspondingly, the top of the weighing box 31 is provided with a yielding hole 311, the lower end of the ejector rod 36 is fixed on the weighing sensor 34, the top end of the ejector rod 36 penetrates through the yielding hole 311 to extend out of the top of the weighing box 31 to be fixedly connected with the pressure angle iron 37, the pressure angle iron 37 is locked and fixed on the upper beam 2 through screws by virtue of screw holes 372, the pressure angle iron 37 is positioned above the weighing box 31, the bottom of the pressure angle iron 37 is arranged in a clearance with the top of the weighing box 31, when the vehicle is overloaded, the pressure angle iron 37 abuts against the top of the weighing box 31 to limit the upper beam 2 to continuously move, further pressure application of the ejector rod 36 and the symmetrical load sensor 34 is avoided, overload protection of the symmetrical load sensor 34 is achieved, and the overload protection threshold value can be adjusted by adjusting the length of the ejector rod 36. The weighing mechanism and the overload protection mechanism 3 are simple in structure and easy to realize, but are not limited to the structure.

In this embodiment, still include firm spring 35, firm spring 35 cover is established on ejector pin 36, and contradicts between the top of weighing sensor 34 and weighing box 31, ensures that weighing sensor 34 etc. is stable in weighing box 31, avoids because the rocking that the assembly intermittent type leads to.

Further, the pressure angle iron 37 is provided with an anti-falling convex edge 371, the top of the weighing box 31 is provided with an anti-falling baffle 313, and the pressure angle iron 37 is blocked by the anti-falling baffle 313 through the anti-falling convex edge 371 so as to limit the maximum upward moving distance of the pressure angle iron. When the upper beam 2 is upwards separated from the main beam 1 of the vehicle body, such as sudden jump in the running process of an automobile, the anti-falling convex edge 371 is blocked by the anti-falling baffle 313, so that the anti-falling protection of the upper beam 2 is realized. The safety of the automobile is improved, and the stroke of the upper beam 2 relative to the main beam 1 of the automobile body in the vertical direction can be adjusted by adjusting the height of the anti-falling baffle 313 and matching with the length of the adjusting ejector rod 36.

In this embodiment, the number of the anti-separation convex edges 371 is two, and the anti-separation convex edges are respectively disposed on two sides of the bottom of the pressure angle iron 37, correspondingly, the number of the anti-separation baffles 313 is also two, and the anti-separation baffles 313 are respectively disposed on two sides of the top of the weighing box 31, and the anti-separation baffles 313 are substantially in a 7-shaped structure, which is simple in structure, but not limited thereto.

Further, the weighing box further comprises a damping mechanism, and the sensor base 33 is arranged on the inner bottom surface of the weighing box 31 through the damping mechanism and used for protecting the weighing mechanism and preventing the weighing mechanism from being damaged due to vibration, collision and the like of the automobile in the running process.

Specifically, in the present embodiment, the damping mechanism is the damping spring 32, which is easy to implement, but is not limited thereto.

The inner bottom surface of the weighing box 31 is provided with a lower spring inner rod 312, the bottom surface of the sensor base 33 is provided with an upper spring inner rod 331, the upper end and the lower end of the damping spring 32 are respectively sleeved on the lower spring inner rod 312 and the upper spring inner rod 331, and the weighing box is simple and convenient to install, stable and well fixed.

Preferably, in this embodiment, the number of the damping springs 32 is two, and the damping springs are arranged side by side, so that the stability is improved.

By adjusting the length of the carrier rod 36 and the strength of the damping spring 32, an adjustment of the overload protection threshold can be achieved.

After the automobile is loaded with cargoes, the weight of the upper beam 2 and the cargoes is transmitted to the main beam 1 of the automobile body sequentially through the pressure angle iron 37, the ejector rod 36, the weighing sensors 34, the sensor base 33, the damping spring 32 and the weighing box 31, the weighing data of the four weighing sensors 34 are collected and are correspondingly processed and calculated, the real-time weighing of the automobile load can be realized, and the remote implementation monitoring of the automobile load can be further realized by combining the technologies such as network communication and the like.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a real-time on-vehicle weighing system which characterized in that: the device comprises a vehicle body main beam, an upper beam, 4 parallel limiters, at least 4 weighing mechanisms and an overload protection mechanism, wherein the upper beam is arranged on the vehicle body main beam through the weighing mechanisms, the 4 parallel limiters are distributed between the vehicle body main beam and the upper beam and used for limiting the parallel relative movement of the upper beam relative to the vehicle body main beam, and the overload protection mechanism is used for limiting the maximum distance of the vertical approaching movement of the upper beam relative to the vehicle body main beam to carry out overload protection through the weighing mechanisms.

2. The real-time vehicle-mounted weighing system of claim 1, wherein: parallel limit ware includes the oblique connecting rod, go up stores pylon and lower carriage, it is fixed to go up the stores pylon and set up on the upper beam, the lower carriage is fixed to be set up on the automobile body girder, the both ends of oblique connecting rod rotate respectively and set up on last stores pylon and lower carriage, 4 parallel limit ware is two liang of settings respectively in the both sides and the one-to-one of automobile body girder, constitute two sets of parallel limit ware groups around the constitution, two oblique connecting rods of every parallel limit ware group constitute one with two hypotenuses of the isosceles trapezoid that the upper beam is parallel, the oblique connecting rod that lies in automobile body girder with two parallel limit ware of one side constitutes one with two hypotenuses of upper beam vertically parallelogram, and this parallelogram's lower line is parallel with the upper beam.

3. The real-time vehicle-mounted weighing system of claim 2, wherein: the height of the parallelogram is less than one tenth of the length of the diagonal link.

4. The real-time vehicle weighing system of claim 1 or 2 or 3, wherein: the quantity of weighing mechanism is 4, and the upper beam is the rectangle structure, and 4 weighing mechanism set up respectively on four angles of upper beam.

5. The real-time vehicle weighing system of claim 4, wherein: the weighing mechanism and the overload protection mechanism comprise a weighing box, a sensor base, a weighing sensor, a push rod and pressure angle iron, the weighing box is fixedly arranged on a vehicle body main beam, the sensor base and the weighing sensor are arranged in the weighing box, the weighing sensor is fixedly arranged on the sensor base, the sensor base is arranged on the inner bottom surface of the weighing box, the top of the weighing box is movably penetrated by the push rod, the lower end of the push rod is fixed on the weighing sensor, the top end of the push rod is fixedly connected with the pressure angle iron, the pressure angle iron is fixedly connected with an upper beam, the bottom of the pressure angle iron is arranged in a gap with the top of the weighing box, and when the overload protection mechanism is overloaded, the pressure angle iron is abutted against the top of the weighing box to limit the upper beam to be vertically close to the weighing mechanism to move relative to the vehicle.

6. The real-time vehicle weighing system of claim 5, wherein: the device also comprises a stable spring, wherein the stable spring is sleeved on the ejector rod and is abutted between the weighing sensor and the top of the weighing box.

7. The real-time vehicle weighing system of claim 5, wherein: the pressure angle iron is provided with an anti-falling convex edge, the top of the weighing box is provided with an anti-falling baffle, and the pressure angle iron is blocked by the anti-falling baffle through the anti-falling convex edge to limit the maximum upward movement distance of the pressure angle iron.

8. The real-time vehicle weighing system of claim 5, wherein: the sensor base is arranged on the inner bottom surface of the weighing box through the damping mechanism.

9. The real-time vehicle weighing system of claim 8, wherein: the damping mechanism is a damping spring.

10. The real-time vehicle weighing system of claim 9, wherein: an inner rod under the spring is arranged on the inner bottom surface of the weighing box, an inner rod on the spring is arranged on the bottom surface of the sensor base, and the upper end and the lower end of the damping spring are respectively sleeved on the inner rod under the spring and the inner rod on the spring.