阅读说明：本技术 一种专用于车辆动态称重的石英称重传感装置 (Quartz weighing sensing device special for vehicle dynamic weighing ) 是由 张涛 张云翔 刘海涛 孙齐宽 杨二来 于 2021-08-03 设计创作，主要内容包括：本发明公开了一种专用于车辆动态称重的石英称重传感装置,包括箱体、传导组件、传感组件,所述箱体上固定安装有传导组件,所述传导组件上固定连接有传感组件,当车辆的车轮经过滚筒时,车轮上的载荷压力下压滚筒,从而带动移动板在穿孔内下移,使得滑杆在滑孔内进行纵向移动,从而带动活塞在活塞缸内的滑腔内下移,与此同时,移动板能够带动连接板下移,从而使连接杆带动下压板向下移动,让凸块对石英称重器进行均匀挤压,从而将车轮上的载荷力传导至石英称重器上,当活塞移动至滑腔底部时,收纳槽内的连接端头在第二弹簧的弹力作用下穿插在接触孔内,使得石英称重器经过传导线能够与数据线相连接,从而使数据能够传输到数据处理终端。(The invention discloses a quartz weighing sensing device special for vehicle dynamic weighing, which comprises a box body, a conduction assembly and a sensing assembly, wherein the box body is fixedly provided with the conduction assembly, the conduction assembly is fixedly connected with the sensing assembly, when wheels of a vehicle pass through a roller, the roller is pressed down by load pressure on the wheels, so that a movable plate is driven to move downwards in a through hole, a slide rod is driven to move longitudinally in a slide hole, a piston is driven to move downwards in a slide cavity in a piston cylinder, meanwhile, the movable plate can drive a connecting plate to move downwards, so that the connecting rod drives a lower pressing plate to move downwards, a lug can uniformly extrude the quartz weighing device, so that the load force on the wheels is transmitted to the quartz weighing device, when the piston moves to the bottom of the slide cavity, a connecting end in a containing groove penetrates into a contact hole under the action of the elastic force of a second spring, so that the quartz weighing device can be connected with a data line through the conduction line, thereby enabling data transmission to the data processing terminal.)

1. The utility model provides a quartzy sensing device that weighs that is exclusively used in vehicle dynamic weighing which characterized in that: the quartz weighing sensing device special for vehicle dynamic weighing comprises a data processing terminal (1), a box body (2), a cavity (3), a quartz weighing device (4), a conducting component (5) and a sensing component (6), wherein the box body (2) is fixedly installed on one side of the data processing terminal (1), the cavity (3) is arranged in the box body (2), a right quartz sensor (4) is fixedly installed at the bottom of the cavity (3), the conducting component (5) is fixedly installed on the box body (2), the sensing component (6) is fixedly connected onto the conducting component (5), the conducting component (5) comprises a moving plate (501), a roller (502), a sliding rod (503), a piston cylinder (504), a sliding cavity (505), a sliding hole (506), a piston (507), a connecting plate (508), a connecting rod (509), a lower pressing plate (510) and a perforation (513), the upper end of the box body (1) is symmetrically provided with through holes (513), a moving plate (501) is arranged in the through holes (513) in a sliding mode, a roller (502) is fixedly arranged between the moving plates (501), a sliding rod (503) is fixedly arranged at the middle position of the bottom of the moving plate (501), piston cylinders (504) are symmetrically and fixedly arranged at the left side and the right side of the cavity (3), the piston cylinders (504) are located under the sliding rod (503), sliding cavities (505) are arranged in the piston cylinders (504), sliding holes (506) are formed in the upper portions of the sliding cavities (505), the sliding rods (503) penetrate through the sliding holes (506), pistons (507) are arranged in the sliding cavities (505) in a sliding mode, the pistons (507) are fixedly connected with the lower ends of the sliding rods (503), connecting plates (508) are fixedly arranged between the bottoms of the moving plates (501), and connecting rods (509) are fixedly arranged at the bottoms of the connecting plates (508), the lower end of the connecting rod (509) is fixedly provided with a lower pressure plate (510).

2. The quartz weighing sensor device special for the dynamic weighing of the vehicle as claimed in claim 1, wherein: the conducting assembly (5) comprises a bump (511), the bump (511) is uniformly and fixedly installed at the bottom of the lower pressing plate (510), and the bump (511) is a sphere.

3. The quartz weighing sensor device special for the dynamic weighing of the vehicle as claimed in claim 1, wherein: the conducting assembly (5) further comprises a first spring (512), the sliding rod (503) is fixedly provided with the first spring (512), and the first spring (512) is located between the moving plate (501) and the piston cylinder (504).

4. The quartz weighing sensor device special for the dynamic weighing of the vehicle as claimed in claim 1, wherein: the sensing assembly (6) comprises an accommodating groove (601), a connecting hole (602), a conducting wire (603), a connecting end head (604), a second spring (605), a contact hole (606) and a data wire (607);

the improved quartz weighing device is characterized in that accommodating grooves (601) are symmetrically formed in two sides of the piston (507), connecting holes (602) are formed between the accommodating grooves (601), a conducting wire (603) penetrates through the connecting holes (602), connecting end heads (604) are fixedly mounted at two ends of the conducting wire (603), the connecting end heads (604) are located in the accommodating grooves (601), second springs (605) are fixedly mounted at the bottoms of the grooves in the accommodating grooves (601), the second springs (605) are located between the bottoms of the accommodating grooves (601) and the connecting end heads (604), contact holes (606) are symmetrically formed in two sides of the bottom of the piston cylinder (507), data lines (607) are fixedly connected to input ends and output ends of the data processing terminal (1), and data line (607) joints and quartz weighing device (4) joints are fixedly mounted in the contact holes (606).

5. The quartz weighing sensor device special for the dynamic weighing of the vehicle as claimed in claim 1, wherein: the transmission component (5) is fixedly provided with a buffer component (7), and the box body (2) is internally and fixedly provided with a supporting component (8).

6. The quartz weighing sensor device special for the dynamic weighing of the vehicle according to claim 5, characterized in that: the buffer assembly (7) comprises a rotary column (701), a rotary hole (702), a bearing (703) and an opening (704);

trompil (704) have been seted up to the upper end of box (2), trompil (704) are in between perforation (513), fixedly connected with cylinder (502) in trompil (704), the both sides middle part symmetry fixed mounting of cylinder (502) has rotary column (701), rotary column (702) have been seted up on movable plate (501), fixed mounting has bearing (703) in rotary column (702), rotary column (701) alternate in bearing (703).

7. The quartz weighing sensor device special for the dynamic weighing of the vehicle according to claim 5, characterized in that: the supporting assembly (8) comprises a fixing block (801), a first rotating rod (802), an expansion rod (803), a second rotating rod (804) and a through hole (805);

the bilateral symmetry fixed mounting of cavity (3) has fixed block (801), the upper end fixed mounting of fixed block (801) has first bull stick (802), rotate on first bull stick (802) and install telescopic link (803), symmetry fixed mounting has second bull stick (804) around movable plate (501), second bull stick (804) are connected for rotating with the flexible end of telescopic link (803), through-hole (805) have been seted up to the both ends symmetry of telescopic link (803), first bull stick (802) all run through-hole (805) with second bull stick (804), and are normal running fit.

Technical Field

The invention relates to the technical field of vehicle dynamic weighing, in particular to a quartz weighing sensing device special for vehicle dynamic weighing.

Background

In a vehicle dynamic weighing system, a vehicle piezoelectric sensor, namely a piezoelectric quartz weighing sensor is generally adopted, a weighing result is obtained by means of pressure borne by a quartz wafer or a quartz crystal, the weighing result usually needs to bear high-speed impact and heavy pressure of an overweight vehicle, the piezoelectric quartz weighing sensor is a device for converting a weight signal into an electric signal by utilizing the longitudinal piezoelectric effect of the quartz crystal, an X-cut quartz crystal piece is usually processed into the shape and the size required by a weighing sensor shell, the weighing sensor shell is arranged in the shell together with an electric plate according to requirements, after sufficient pretightening force is applied, a circular membrane is welded and sealed with the shell, when the weighing sensor is acted by external load, a quartz crystal wafer generates electric charge, the electric charge is collected by the electric plate and transmitted to a signal output socket, and then the electric charge is transmitted to a charge amplifier (an operational amplifier with capacitance feedback) by a low-noise coaxial cable, after sensitivity normalization, proportional conversion to a voltage output, or an amplifier provides the necessary drive for analog-to-digital conversion of the weight signal and transmits this signal to a computer, which then converts it to weight using software.

The existing quartz weighing sensing device specially used for dynamic weighing of vehicles mostly pre-embeds weighing sensors in the road surface, when vehicle tires pass through the weighing sensors, the change of load pressure is recorded through the weighing sensors and is fed back to a computer, corresponding software is converted into weight display, but because the existing weighing sensors are in contact with the wheels, the speed influence of the vehicles is received, the rolling pressure degree of the wheels on the weighing sensors is different, the weighing sensors are caused to be uneven by external load acting force, the weighing sensors are caused to record a plurality of numerical values, and the weighing accuracy is caused to be influenced.

Disclosure of Invention

The invention aims to provide a quartz weighing sensing device special for vehicle dynamic weighing, which solves the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the quartz weighing sensing device specially used for vehicle dynamic weighing comprises a data processing terminal, a box body, a cavity, a quartz weighing device, a conduction component and a sensing component, wherein the box body is fixedly installed on one side of the data processing terminal, the cavity is formed in the box body, a right quartz sensor is fixedly installed at the bottom of the cavity, the conduction component is fixedly installed on the box body and can conduct load pressure on wheels to the quartz weighing device through the conduction component, the sensing component is fixedly connected onto the conduction component, the maximum value of the load pressure can be effectively recorded through the sensing component, the conduction component comprises a movable plate, a roller, a sliding rod, a piston cylinder, a sliding cavity, a sliding hole, a piston, a connecting plate, a connecting rod, a lower pressing plate and a perforation, the two sides of the upper end of the box body are symmetrically provided with the perforation, the vehicle-mounted anti-collision device is characterized in that a movable plate is arranged in the through hole in a sliding manner and can longitudinally move in the through hole, a roller is fixedly arranged between the movable plates, the impact force of a vehicle can be weakened through the roller, a slide bar is fixedly arranged at the middle position of the bottom of the movable plate, piston cylinders are symmetrically and fixedly arranged on the left side and the right side of the cavity and are positioned under the slide bar, a slide cavity is arranged in each piston cylinder, a slide hole is formed in the upper part of each slide cavity, the slide bar penetrates through the slide hole to facilitate the longitudinal movement of the slide bar in the slide hole, a piston is arranged in each slide cavity in a sliding manner and is fixedly connected with the lower end of the slide bar, the slide bar can drive the piston to longitudinally move in each slide cavity due to the sliding fit between the slide cavities and the piston, a connecting plate is fixedly arranged between the bottoms of the movable plates, and a connecting rod is fixedly arranged at the bottoms of the connecting plates, the lower end of the connecting rod is fixedly provided with a lower pressing plate, and the movable plate can drive the connecting plate to move in the moving process, so that the connecting rod drives the lower pressing plate to extrude the quartz weighing device.

As a preferred technical scheme, the conducting assembly comprises a convex block, the bottom of the lower pressing plate is uniformly and fixedly provided with the convex block, the convex block is a sphere, and the load pressure of the wheel can be uniformly transmitted to the quartz weighing device through the convex block at the bottom of the lower pressing plate.

As a preferred technical scheme, the conducting assembly further comprises a first spring, the sliding rod is fixedly provided with the first spring, the first spring is located between the moving plate and the piston cylinder, the moving plate can be jacked up through the first spring, and the piston is prevented from falling to the bottom of a sliding cavity of the piston cylinder in a normal state.

As a preferred technical scheme, the sensing assembly comprises a receiving groove, a connecting hole, a conducting wire, a connecting end, a second spring, a contact hole and a data wire;

the piston is characterized in that the two sides of the piston are symmetrically provided with accommodating grooves, connecting ends are conveniently accommodated through the accommodating grooves, connecting holes are arranged between the accommodating grooves, a conducting wire penetrates through the connecting holes, the two ends of the conducting wire are fixedly provided with the connecting ends, the connecting ends are of conical structures, the conducting wire and the connecting ends can play a data transmission role, the connecting ends are positioned in the accommodating grooves, the bottom of the accommodating groove is fixedly provided with a second spring, the second spring is positioned between the bottom of the accommodating groove and the connecting ends, the connecting ends can be inserted into the contact holes through the elastic action of the second spring, the two sides of the bottom of the piston cylinder are symmetrically provided with contact holes, the contact holes are conical holes, the connecting ends are conveniently matched with the contact holes, and the input end and the output end of the data processing terminal are fixedly connected with data wires, and a data line joint and a quartz weighing device joint are fixedly arranged in the contact hole.

As a preferred technical scheme, the transmission assembly is fixedly provided with the buffering assembly, the impact force of the wheels can be weakened through the buffering assembly, the box body is internally and fixedly provided with the supporting assembly, and the moving plate can be guaranteed to only move longitudinally through the supporting assembly.

As the preferred technical scheme, the buffer assembly comprises a rotary column, a rotary hole, a bearing and an opening;

the trompil has been seted up to the upper end of box, the trompil is in between the perforation, fixedly connected with cylinder in the trompil makes things convenient for the cylinder to remove in the trompil, the both sides middle part symmetry fixed mounting of cylinder has the rotary column, the rotary bore has been seted up on the movable plate, fixed mounting has the bearing in the rotary bore, the rotary column alternates in the bearing, and through the lubrication action of bearing, can weaken the rotary friction power of rotary column in the rotary bore for the rotary column can be more smooth and easy at the rotary bore internal rotation, and then lets the cylinder can rotate, makes the impact force that the wheel brought can turn into the revolving force of cylinder.

As a preferred technical scheme, the supporting component comprises a fixed block, a first rotating rod, a telescopic rod, a second rotating rod and a through hole;

the bilateral symmetry fixed mounting of cavity has the fixed block, the upper end fixed mounting of fixed block has first bull stick, can provide the holding power for first bull stick through the fixed block, rotate on the first bull stick and install the telescopic link, when the telescopic link can restrict the lateral shifting of movable plate, can not obstruct the longitudinal movement of movable plate, and can form the support arm with first bull stick and second bull stick through the telescopic link, symmetry fixed mounting has the second bull stick around the movable plate, the second bull stick is connected for rotating with the flexible end of telescopic link, the through-hole has been seted up to the both ends symmetry of telescopic link, first bull stick all runs through the through-hole with the second bull stick, and for normal running fit, all runs through the through-hole through first bull stick and second bull stick and be normal running fit, can ensure that the telescopic link can not take place the interlocking with first bull stick and second bull stick.

Compared with the prior art, the invention has the following beneficial effects:

1. the transmission component and the sensing component are arranged, when wheels of a vehicle pass through the roller, the roller is pressed down by load pressure on the wheels, so that the movable plate is driven to move downwards in the through hole, the slide rod is driven to move longitudinally in the slide hole, the piston is driven to move downwards in the slide cavity in the piston cylinder, meanwhile, the movable plate can drive the connecting plate to move downwards, the connecting rod drives the lower pressing plate to move downwards, the convex block is used for uniformly extruding the quartz weighing device, so that the load force on the wheels is transmitted to the quartz weighing device, when the piston moves to the bottom of the slide cavity, the connecting end in the accommodating groove is inserted into the contact hole under the elastic force action of the second spring, the quartz weighing device can be connected with the data line through the transmission line, so that the data can be transmitted to the data processing terminal, the maximum value of the load of the wheels is conveniently recorded, and the weighing accuracy is further ensured, whether the vehicle is overweight or not is conveniently judged, when the wheels pass through the roller, the bumps are not extruded on the quartz weighers, and obviously, the vehicle is not overweight.

2. The buffer assembly and the support assembly are arranged, the impact force of the wheels is weakened by the buffer assembly, the rotating friction force of the rotating column in the rotating hole can be weakened through the lubricating action of the bearing, so that the rotating column can rotate more smoothly in the rotating hole, thereby leading the roller to rotate, leading the impact force brought by the wheels to be converted into the rotating force of the roller, achieving the effect of weakening the impact force of the wheels, the normal running of the vehicle is not influenced, the movable plate can be supported by the supporting component, the fixed block can provide supporting force for the first rotating rod, the telescopic rod can form a supporting arm together with the first rotating rod and the second rotating rod, can limit the transverse movement of the moving plate, meanwhile, the telescopic rod cannot obstruct the longitudinal movement of the movable plate, and the first rotating rod and the second rotating rod penetrate through the through hole in a rotating fit mode, so that the telescopic rod cannot be interlocked with the first rotating rod and the second rotating rod.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a front view cut-away schematic of the present invention;

FIG. 4 is a left side sectional view of the present invention;

FIG. 5 is a right side cutaway schematic view of the present invention;

FIG. 6 is an enlarged schematic view of FIG. 3 at a;

FIG. 7 is an enlarged view of the structure of FIG. 3 at b;

FIG. 8 is an enlarged view of the structure of FIG. 4 at c;

fig. 9 is an enlarged schematic view of fig. 4 at d.

In the figure: 1. a data processing terminal; 2. a box body; 3. a cavity; 4. a quartz weigher;

5. a conductive component; 501. moving the plate; 502. a drum; 503. a slide bar;

504. a piston cylinder; 505. a slide chamber; 506. a slide hole; 507. a piston;

508. a connecting plate; 509. a connecting rod; 510. a lower pressing plate; 511. a bump;

512. a first spring; 513. perforating;

6. a sensing component; 601. a receiving groove; 602. connecting holes; 603. a conductive line;

604. connecting the end heads; 605. a second spring; 606. a contact hole; 607. a data line;

7. a buffer assembly; 701. turning the column; 702. hole turning; 703. a bearing;

704. opening a hole;

8. a support assembly; 801. a fixed block; 802. a first rotating lever; 803. a telescopic rod;

804. a second rotating rod; 805. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): as shown in fig. 1 to 9, the present invention provides the following technical solutions: the quartz weighing sensing device specially used for vehicle dynamic weighing comprises a data processing terminal 1, a box body 2, a cavity 3, a quartz weighing device 4, a conducting component 5 and a sensing component 6, wherein the box body 2 is fixedly installed on one side of the data processing terminal 1, the cavity 3 is arranged in the box body 2, a right quartz sensor 4 is fixedly installed at the bottom of the cavity 3, the conducting component 5 is fixedly installed on the box body 2, load pressure on wheels can be conducted onto the quartz weighing device 4 through the conducting component 5, the sensing component 6 is fixedly connected onto the conducting component 5, the maximum value of the load pressure can be effectively recorded through the sensing component 6, and the conducting component 5 comprises a moving plate 501, a roller 502, a sliding rod 503, a piston cylinder 504, a sliding cavity 505, a sliding hole 506, a piston 507, a sliding plate, a roller 502, a sliding rod 503, a piston cylinder 505, a sliding cavity 505, a sliding hole 506, a piston 507 and a sensor, The connecting plate 508, the connecting rod 509, the lower pressing plate 510 and the through hole 513 are symmetrically arranged on two sides of the upper end of the box body 1, the moving plate 501 is slidably arranged in the through hole 513, the moving plate 501 can longitudinally move in the through hole 513, the roller 502 is fixedly arranged between the moving plates 501, the impact force of a vehicle can be weakened through the roller 502, the sliding rod 503 is fixedly arranged at the middle position of the bottom of the moving plate 501, the piston cylinders 504 are symmetrically and fixedly arranged on the left side and the right side of the cavity 3, the piston cylinders 504 are positioned under the sliding rod 503, a sliding cavity 505 is arranged in the piston cylinder 504, the upper part of the sliding cavity 505 is provided with a sliding hole 506, the sliding rod 503 penetrates through the sliding hole 506, so that the sliding rod 503 can longitudinally move in the sliding hole 506, the sliding cavity 505 is slidably arranged with a piston 507, the piston 507 is fixedly connected with the lower end of the sliding rod 503, and the sliding cavity 505 is in sliding fit with the piston 507, the sliding rod 503 can drive the piston to move longitudinally in the sliding cavity 505, the connecting plate 508 is fixedly installed between the bottoms of the moving plate 501, the connecting rod 509 is fixedly installed at the bottom of the connecting plate 508, the lower end of the connecting rod 509 is fixedly installed with the lower pressing plate 510, and the moving plate 501 can drive the connecting plate 508 to move in the moving process, so that the connecting rod 509 drives the lower pressing plate 510 to extrude the quartz weighing device 4.

The conducting assembly 5 comprises a bump 511, the bump 511 is uniformly and fixedly installed at the bottom of the lower pressing plate 510, the bump 511 is a sphere, and the load pressure of the wheel can be uniformly transmitted to the quartz weigher 4 through the bump 511 at the bottom of the lower pressing plate 510.

The conducting assembly 5 further comprises a first spring 512, the sliding rod 503 is fixedly provided with the first spring 512, the first spring 512 is located between the moving plate 501 and the piston cylinder 504, and the moving plate 501 can be jacked up through the first spring 512, so that the piston 507 is prevented from falling to the bottom of the sliding cavity 505 of the piston cylinder 504 in a normal state.

As shown in fig. 1 to 7, the sensing component 6 includes a receiving groove 601, a connecting hole 602, a conducting wire 603, a connecting terminal 604, a second spring 605, a contact hole 606, and a data line 607;

the two sides of the piston 507 are symmetrically provided with accommodating grooves 601, the accommodating grooves 601 are used for conveniently accommodating connecting terminals 604, a connecting hole 602 is formed between the accommodating grooves 601, a conducting wire 603 penetrates through the connecting hole 602, the two ends of the conducting wire 603 are fixedly provided with the connecting terminals 604, the connecting terminals 604 are in a conical structure, the conducting wire 603 and the connecting terminals 604 can play a role in data transmission, the connecting terminals 604 are positioned in the accommodating grooves 601, the bottom of each accommodating groove 601 is fixedly provided with a second spring 605, the second spring 605 is positioned between the bottom of each accommodating groove 601 and the corresponding connecting terminal 604, the corresponding connecting terminal 604 can penetrate through the corresponding contact hole 606 under the elastic force action of the second spring 605, the two sides of the bottom of the piston cylinder 507 are symmetrically provided with the corresponding contact holes 606, the corresponding contact holes 606 are conical holes, and the corresponding connecting terminals 604 and the corresponding contact holes 606 can be conveniently matched with each other, the input end and the output end of the data processing terminal 1 are fixedly connected with a data line 607, and a data line 607 connector and a quartz weigher 4 connector are fixedly arranged in the contact hole 606.

The transmission assembly 5 is fixedly provided with a buffer assembly 7, the impact force of the wheels can be weakened through the buffer assembly 7, a support assembly 8 is fixedly arranged in the box body 2, and the movable plate 501 can be guaranteed to move only longitudinally through the support assembly 8.

As shown in fig. 1 to 5, the buffer assembly 7 includes a rotary column 701, a rotary hole 702, a bearing 703, and an opening 704;

the trompil 704 has been seted up to the upper end of box 2, trompil 704 is in between the perforation 513, fixedly connected with cylinder 502 in the trompil 704, the symmetry fixed mounting has rotary column 701 in the both sides middle part of cylinder 502, the rotating hole 702 has been seted up on the movable plate 501, fixed mounting has bearing 703 in the rotating hole 702, rotary column 701 alternates in bearing 703, and lubrication action through bearing 703 can weaken rotary friction of rotary column 701 in rotating hole 702 for the rotary column can be more smooth and easy at the internal rotation of rotating hole 702, and then lets cylinder 502 rotate, makes the impact force that the wheel brought can convert into the revolving force of cylinder 502.

As shown in fig. 4-5 and 8-9, the support assembly 8 includes a fixing block 801, a first rotating rod 802, an expansion rod 803, a second rotating rod 804, and a through hole 805;

fixing blocks 801 are symmetrically and fixedly installed at two sides of the cavity 3, a first rotating rod 802 is fixedly installed at the upper end of each fixing block 801, the fixing block 801 can provide supporting force for the first rotating rod 802, the first rotating rod 802 is rotatably provided with a telescopic rod 803, the telescopic rod 803 can limit the lateral movement of the moving plate 501, at the same time, does not block the longitudinal movement of the moving plate 501, and can form a supporting arm with the first rotating rod 802 and the second rotating rod 804 through the telescopic rod 803, the front and the back of the moving plate 501 are symmetrically and fixedly provided with a second rotating rod 804, the second rotating rod 804 is rotatably connected with the telescopic end of the telescopic rod 803, through holes 805 are symmetrically formed at two ends of the telescopic rod 803, the first rotating rod 802 and the second rotating rod 804 both penetrate through the through holes 805 and are in rotating fit with each other, through the first rotating rod 802 and the second rotating rod 804 both penetrating through the through hole 805 for rotating matching, it can be ensured that the telescopic rod 803 does not interlock with the first rotating rod 802 and the second rotating rod 804.

The working principle of the invention is as follows: firstly, when the wheel of the vehicle passes through the roller 502, the load pressure on the wheel presses the roller 502 downwards to drive the moving plate 501 to move downwards in the through hole 513, so that the sliding rod 503 moves longitudinally in the sliding hole 506 to drive the piston 507 to move downwards in the sliding cavity 505 in the piston cylinder 504, meanwhile, the moving plate 501 can drive the connecting plate 508 to move downwards, so that the connecting rod 509 drives the lower pressing plate 510 to move downwards, the bump 511 uniformly extrudes the quartz weigher 4, so that the load force on the wheel is transmitted to the quartz weigher 4, when the piston 507 moves to the bottom of the sliding cavity 505, the connecting end 604 in the accommodating groove 601 is inserted in the contact hole 606 under the elastic force of the second spring 605, so that the quartz weigher 4 can be connected with the data line 607 through the conducting line 603, so that the data can be transmitted to the data processing terminal 1, and the maximum value of the wheel load can be conveniently recorded, and then guarantee the accuracy of weighing, whether the convenient judgement car is overweight, when the wheel passes through cylinder 502, do not make lug 511 to quartz weigher 4 extrusion, obviously, the car is overweight.

Then, the impact force of the wheel is weakened by the buffer assembly, and the rotating friction force of the rotating column 701 in the rotating hole 702 can be weakened through the lubricating action of the bearing 703, so that the rotating column 701 can rotate more smoothly in the rotating hole 702, thereby enabling the roller 502 to rotate, converting the impact force brought by the wheels into the rotating force of the roller 502, achieving the effect of weakening the impact force of the wheels, and the normal running of the vehicle is not influenced, the movable plate can be supported by the support component 8, the fixed block 801 can provide supporting force for the first rotating rod 802, the telescopic rod 803 can form a support arm with the first rotating rod 802 and the second rotating rod 804, can limit the lateral movement of the moving plate 501, meanwhile, the extension rod 803 does not obstruct the longitudinal movement of the moving plate 501, and the first rotating rod 802 and the second rotating rod 804 are rotatably matched through the through hole 805, it can be ensured that the telescopic rod 803 does not interlock with the first rotating rod 802 and the second rotating rod 804.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.