CN218035316U - Weighing structure of automobile weighing apparatus - Google Patents

Abstract

The utility model discloses an automobile weighing apparatus weighing structure belongs to the technical field of weighing, including weighing sensor, be used for fixing on the balance core of automobile weighing apparatus and outwards stretch out the support arm of balance core and be used for setting up the bearing seat on the weighing platform frame of automobile weighing apparatus, wherein: be provided with the chamber of weighing in the bearing seat, the support arm stretches at the intracavity of weighing through the inboard in chamber of weighing, has seted up vertical screw hole on the support arm, is provided with the external screw thread on the outer wall of weighing sensor's lateral wall, and weighing sensor revolves in the screw hole to weighing sensor's bottom pressure is in the chamber bottom of weighing. The utility model discloses a setting of support arm, the external screw thread of the lateral wall of screw hole and weighing sensor on the cooperation support arm for weighing sensor is located the balance core outside, and not balance core bottom, and weighing sensor does not receive the restriction of balance core when installing, timing, overhauing, changing, and weighing sensor's installation, timing, maintenance, change convenience, swift.

Description

Weighing structure of automobile weighing apparatus

Technical Field

The utility model relates to a technical field of weigh, especially indicate a car weighing apparatus structure of weighing.

Background

At present, the majority of provincial expressways in China carry out weight-metering charging, the toll collected is calculated according to the total vehicle weight of the vehicle and the axle weight of each axle, and whether the total vehicle weight and the axle weight of each axle meet the load-limiting requirements of the total vehicle weight and the axle weight of each axle specified by the national standard is judged according to the total vehicle weight and the axle weight of each axle which are called.

A weighing apparatus for car (also called weighing platform or weighbridge) is used for weighing the coming and going trucks on the highway. The weighing of the automobile is carried out through a weighing sensor of the automobile weighing apparatus, the weighing sensor of the existing automobile weighing apparatus is arranged at the bottom of a weighing platform, and the weighing platform is pressed on the top end of the weighing sensor. After the vehicle advances to weighing platform mesa top, the gravity of vehicle passes through weighing platform mesa and transmits to weighing sensor's top, and weighing sensor's atress strain body produces weak deformation under the pressure effect on top, and its resistance value changes correspondingly, and signal output voltage under stable excitation voltage also changes to the weight of vehicle is obtained in the weighing.

Because the weighing platform mesa among the prior art is pressed on weighing sensor's top, consequently the weighing sensor receives the restriction of weighing platform mesa when installing, timing, maintenance, changing, need pull down whole weighing platform mesa, just can carry out corresponding operation to the sensor, and is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a weighing structure of automobile weighing apparatus, weighing sensor install, timing, overhaul, when changing, do not receive the restriction of balance core, and is convenient, swift.

The utility model provides a technical scheme as follows:

the utility model provides an automobile weighing apparatus weighing structure, includes weighing sensor, is used for fixing on the balance core of automobile weighing apparatus and outwards stretches out the support arm of balance core and the bearing seat that is used for setting up on the weighing platform frame of automobile weighing apparatus, wherein:

the weighing device is characterized in that a weighing cavity is formed in the bearing seat, the supporting arm extends into the weighing cavity through the inner side of the weighing cavity, a vertical threaded hole is formed in the supporting arm, external threads are formed in the outer wall of the side wall of the weighing sensor, the weighing sensor is screwed in the threaded hole, and the bottom end of the weighing sensor is pressed at the bottom of the weighing cavity.

Furthermore, a vertical accommodating cavity is formed in the side wall of the weighing sensor, a stressed strain body fixedly connected with the side wall is arranged in the accommodating cavity, a strain gauge is fixedly arranged at the top end of the stressed strain body, and the strain gauge is connected with a cable;

the bottom end of the stress strain body extends downwards from the bottom end of the accommodating cavity to a certain distance from the bottom end of the side wall; or a force transmission component is arranged below the stress strain body, and the bottom end of the force transmission component extends downwards from the bottom end of the accommodating cavity to the bottom end of the side wall for a certain distance;

the bottom end of the stress strain body or the bottom end of the force transmission component is pressed at the bottom of the weighing cavity.

Furthermore, the stress strain body and the side wall are of an integrated structure, and the central part of the top end of the force transmission component is in contact with the central part of the bottom end of the stress strain body.

Furthermore, a first vertical group of limiting grooves are formed in the inner wall of the threaded hole in the supporting arm, a second vertical group of limiting grooves are formed in the outer wall of the side wall of the weighing sensor, and when the weighing sensor is screwed into the threaded hole to align one of the first group of limiting grooves with one of the second group of limiting grooves, a limiting pin is inserted into a limiting space formed by the first group of aligned limiting grooves and the second group of aligned limiting grooves.

Further, the first group of limiting grooves are uniformly distributed on the inner wall of the threaded hole, the second group of limiting grooves are uniformly distributed on the outer wall of the side wall of the weighing sensor, and common divisor does not exist in the number of the first group of limiting grooves and the number of the second group of limiting grooves.

Further, the bearing seat comprises a bottom bearing plate and side enclosing plates, and the bottom bearing plate and the side enclosing plates enclose a weighing cavity with an opening at the inner side and the upper side; the weighing cavity is arranged on the bottom bearing plate and is provided with a sensor boss, and the bottom end of the stress strain body or the bottom end of the force transmission component is pressed on the top end of the sensor boss.

Furthermore, the weighing cavity is internally provided with a limiting block fixed with the bottom bearing plate and/or the side surrounding plate, the supporting arm is positioned in a space limited by the limiting block, a set gap is formed between the limiting block and the side wall of the supporting arm, and an elastic cushion is arranged in the gap.

Furthermore, a prepressing piece is arranged above the supporting arm, the prepressing piece is connected to the side coaming and/or the limiting block downwards, and the prepressing piece presses the supporting arm downwards, so that the bottom end of a stressed strain body or the bottom end of a force transmission part of the weighing sensor is pressed on the top end of the sensor boss with set pressure.

Furthermore, the pre-pressing piece is a linear pressing block, a pre-pressing piece stop block is fixedly arranged on the inner wall of the side coaming on one side of the supporting arm, one end of the linear pressing block is positioned below the pre-pressing piece stop block, the other end of the linear pressing block is downwards connected to a limiting block on the other side of the supporting arm through a group of first bolts, a downward arc-shaped lower convex part is arranged at the bottom end of the linear pressing block, and the bottom end of the arc-shaped lower convex part presses the top end of the supporting arm;

or, the pre-compaction piece is including circle ring gland, circle ring gland inside is cylindrical cavity, the fixed two otic placodes that are provided with on the lateral wall of circle ring gland, two otic placodes are connected to the position through a set of third bolt downwardly directed respectively on two relative stoppers of support arm both sides, circle ring gland bottom is pressed the support arm top, weighing sensor's upper portion is located in the cylindrical cavity, cylindrical cavity top is provided with the dust cap.

Further, first bolt and third bolt homoenergetic are through locking structure locking, wherein:

the anti-loosening structure comprises a set screw, the set screw is arranged on the side wall of the end part of the linear pressing block connected with the first bolt and on the side walls of the two lug plates of the circular pressing cover, and the set screw penetrates into the side wall of the end part of the linear pressing block or the side wall of the lug plate of the circular pressing cover and abuts against the side wall of the first bolt or the third bolt;

or the number of the first bolts/the third bolts contained in the group of the first bolts/the group of the third bolts is multiple, the screw thread turning directions of the first bolts/the third bolts in the same group are not all the same, and the first bolts/the third bolts in the same group are connected together through an anti-rotation plate; the upper portions of the first bolts/the third bolts are provided with non-circular positioning plates, a plurality of anti-rotation holes matched with the positioning plates in shape are formed in the anti-rotation plates, and the positioning plates of the first bolts/the third bolts in the same group are respectively positioned in the anti-rotation holes of the anti-rotation plates.

Furthermore, a movable coaming is arranged on an opening at the inner side of the weighing cavity, and a supporting arm passing window is arranged at the lower part of the movable coaming;

the side bounding wall top and activity bounding wall outside top are provided with first group joint strip, first group joint strip is in it is open to become a week closed setting to weigh the upside in chamber, it is open to weigh the upside in chamber it is in first group joint strip top is provided with the top cap.

Furthermore, the top end of the side coaming is provided with an upper end plate extending to the outer side of the weighing cavity, and the upper end plate is provided with a concrete pouring air outlet;

the limiting block with form the line concentration box installation cavity between the lateral bounding wall, be provided with the through wires hole on the lateral bounding wall, be used for setting up the threading pipe on the through wires hole.

The utility model discloses following beneficial effect has:

the utility model discloses a setting of support arm, the external screw thread of the lateral wall of screw hole and weighing sensor on the cooperation support arm, when weighing to the vehicle, on transmitting weighing sensor's lateral wall with the gravity of vehicle, and no longer the gravity of vehicle directly presses on weighing sensor's top. Make weighing sensor be located the balance core outside, but not balance core bottom, weighing sensor installs, timing, overhauls, when changing, does not receive the restriction of balance core, need not pull down whole balance core, only need with weighing sensor from the screw hole of support arm upwards screw out can, weighing sensor's installation, timing, maintenance, change convenience, swift.

Drawings

FIG. 1 is a schematic view of an automotive weighing scale with the weighing structure of the present invention;

FIG. 2 is a schematic view of a scale core;

fig. 3 is a cross-sectional view of fig. 2 in the width direction;

FIG. 4 is a top view of FIG. 2 with the platform top removed;

FIG. 5 is an enlarged view of area B of FIG. 4;

FIG. 6 is a schematic view of a support beam for the scale platform;

FIG. 7 is a schematic view of the underside of FIG. 2 with the platform top removed;

FIG. 8 is an enlarged view of area C of FIG. 7;

FIG. 9 is a schematic view of a load cell mounted to a support arm;

FIG. 10 is a schematic view of FIG. 9 with the circlip removed;

FIG. 11 is a schematic view of the upper side of the support arm;

FIG. 12 is a schematic view of the underside of the support arm;

FIG. 13 is a schematic view of a spacing pin;

fig. 14 is a schematic view of a rotary wrench.

FIG. 15 is a schematic view of a scale housing;

FIG. 16 is a schematic view of a load bearing seat;

FIG. 17 is a schematic view of a weighing structure of a vehicle weighing scale with a preload structure of example one;

FIG. 18 is a cross-sectional view taken along the length of the load carrier;

FIG. 19 is a partial cross-sectional view of an automotive weighing scale taken in the width direction;

fig. 20 is an enlarged view of region a in fig. 19.

FIG. 21 is a partial schematic view of a balance edge plate;

FIG. 22 is a schematic view of a scale head plate;

FIG. 23 is a schematic view of a pallet.

FIG. 24 is a perspective view of the load cell;

FIG. 25 is a cross-sectional view of the load cell;

FIG. 26 is a schematic view of the structure within the receiving cavity of the load cell;

FIG. 27 is a schematic view of a capping structure of the load cell;

FIG. 28 is a cross-sectional view of the side walls of the load cell, the strain body, and the strain gage and circuit board at the top of the strain body;

FIG. 29 is a cross-sectional view of a force transmitting member of the load cell;

FIG. 30 is a schematic view of a weighing structure of an automotive weighing scale with a preload structure of EXAMPLE III;

FIG. 31 is the schematic view of FIG. 30 with the dust cover removed;

FIG. 32 is a schematic view of the installation of an anti-rotation plate;

FIG. 33 is a schematic view of the anti-rotation plate;

FIG. 34 is a schematic view of the structure of the first/second/third bolt;

fig. 35 is an installation schematic diagram of the spring telescopic rod.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a weighing apparatus structure of weighing of automobile, as shown in fig. 1-35, including weighing sensor 2, be used for fixing on the balance core 1 of weighing apparatus of automobile and outwards stretch out support arm 4 of balance core 1 and be used for setting up bearing seat 5 on the weighing platform frame 3 of weighing apparatus of automobile, wherein:

a weighing cavity 6 is arranged in the bearing seat 5, and the supporting arm 4 extends into the weighing cavity 6 through the inner side of the weighing cavity 6. Offer vertical screw hole 7 on the support arm 4, be provided with external screw thread 8 on the outer wall of weighing sensor 2's lateral wall 68, weighing sensor 2 revolves in screw hole 7 through its external screw thread 8 to weighing sensor 2's bottom is pressed in weighing chamber 6 bottom, weighs to the vehicle on the balance core 1.

The utility model discloses set up support arm 4 in the outside around the balance core 1 to outwardly directed balance core 1, weighing sensor 2 sets up the chamber 6 of weighing that holds support arm 4 in the external screw thread 8 through lateral wall 68 revolves the screw hole 7 of support arm 4 in the bearing seat 5 on weighing platform frame 3, makes weighing sensor 2 no longer be located 1 below of balance core, but is located the weighing platform frame 3 in the 1 outside of balance core.

After the vehicle goes on the scale core 1, the gravity of the vehicle is transmitted to the support arm 4 through the scale core 1, because the weighing sensor 2 is screwed in the threaded hole 7 of the support arm 4 through the external thread 8 of the side wall 68, the gravity of the vehicle is transmitted to the side wall 68 of the weighing sensor 2, because the bottom end of the weighing sensor 2 is pressed at the bottom of the weighing cavity 6, a deformation part of the weighing sensor 2 is weakly deformed under the action of the gravity of the vehicle, the resistance value of the deformation changes, the signal output voltage under the stable excitation voltage also changes, the deformation of the weighing sensor 2 is converted into an electronic signal, and the weight of the vehicle is weighed.

The utility model discloses a setting of support arm 4, the external screw thread 8 of the threaded hole 7 on the cooperation support arm 4 and the lateral wall of weighing sensor 2 when weighing the vehicle, on transmitting the gravity of vehicle to weighing sensor 2's lateral wall 68, and no longer the gravity of vehicle directly presses on weighing sensor 2's top. Make weighing sensor 2 be located 1 outsides of balance core, rather than 1 bottom of balance core, when weighing sensor 2 installed, timing, maintenance, change, not receive the restriction of balance core 1, need not pull down whole balance core 1, only need with weighing sensor 2 from the screw hole 7 of support arm 4 upwards screw-out can, weighing sensor 2's installation, timing, maintenance, change convenience, swift.

Aforementioned weighing platform frame 3 buries in the highway road surface, and weighing platform frame 3 is the rectangle structure, and it encloses to be located the inside and open weighing platform cavity 87 that makes progress of weighing platform frame 3, and weighing core 1 is located weighing platform cavity 87 and 1 seats of weighing core are on weighing platform frame 3, and is concrete, can be that the outward flange seat of weighing core 1 is on weighing platform frame 3's inward flange, weighing platform frame 3 top surface and 2 top surfaces of weighing core and highway road surface parallel and level. When the vehicle runs on a road and the wheel presses on the scale core 1, the weighing sensor 2 weighs the vehicle.

The quantity of the bearing seats 5 on the weighing platform outer frame 3 is at least 2, a weighing cavity 6 is arranged in each bearing seat 5, and the weighing cavity 6 is communicated with a weighing platform cavity 87 inside the weighing platform outer frame 3 through the inner side of the weighing cavity 6. The quantity of the supporting arms 4 on the scale core 1 is the same as that of the bearing seats 5, and after the scale core 1 is arranged on the scale platform outer frame 3, the supporting arms 4 extend outwards in the weighing cavity 6 through the inner side of the weighing cavity 6.

The utility model discloses be provided with external screw thread 8 on the outer wall of lateral wall 68 that requires weighing sensor 2 to require weighing sensor 2's bottom to press in weighing chamber 6 bottom, in addition, weighing sensor 2's structure is unrestricted, in one of them example:

be provided with vertical chamber 69 that holds in weighing sensor 2's the lateral wall 68, hold and be provided with in the chamber 69 with lateral wall 68 fixed connection's atress straining body 70, atress straining body 70 is located in the upper and lower direction and holds chamber 69 middle part, and the fixed foil gage 71 that is provided with in atress straining body 70 top, and foil gage 71 is connected with cable 32, and the cable is used for with weighing sensor 2 external connection, provides electric power and transmission signal of telecommunication.

The bottom end of the strain body 70 extends a distance from the bottom end of the accommodating cavity 69 to the bottom end of the side wall 68. Alternatively, a force transmission member 72 is disposed below the strain body 70, and the bottom end of the force transmission member 72 extends a distance from the bottom end of the accommodating cavity 69 to the bottom end of the side wall 68.

The utility model discloses in, the atress straining body 70 bottom or pass power part 72 bottom and stretch out lateral wall 68 bottom certain distance downwards, the balance core 1 seat back to weighing platform frame 3 on, the atress straining body 70 bottom or pass power part 72 bottom pressure in the chamber 6 bottom of weighing, and weighing sensor 2's lateral wall 68 not with weigh the chamber 6 bottom contact, have certain space between the two to can weigh to the vehicle on the balance core 1.

After the vehicle travels to the top end of the scale core 1, the gravity of the vehicle is transmitted to the support arm 4 through the scale core 1, because the weighing sensor 2 is screwed in the threaded hole 7 of the support arm 4 through the external thread 8 of the side wall 68, the gravity of the vehicle is transmitted to the side wall 68 of the weighing sensor 2 and further transmitted to the stress strain body 70 fixedly connected with the side wall 68, because the bottom end of the stress strain body 70 or the bottom end of the force transmission part 72 below the stress strain body 70 is pressed on the bottom of the weighing cavity 6 of the scale platform outer frame 3, the stress strain body 70 generates weak deformation under the gravity action of the vehicle, the deformation causes the strain sheet 71 fixedly arranged at the top end of the stress strain body 70 to generate corresponding deformation, the resistance value of the strain sheet 71 generates change due to deformation, the signal output voltage under stable excitation voltage also generates change, the deformation of the stress strain body 70 is converted into an electronic signal, and the weight of the vehicle is weighed.

In the present invention, the stressed strain body 70 and the sidewall 68 can be integrally formed as a single structure. Alternatively, the strain receiving member 70 and the side wall 68 may be formed as separate bodies and integrally connected by welding or the like.

The central part of the top end of the force transmission component 72 is contacted with the central part of the bottom end of the strain body 70, the gravity of the vehicle enables the central part of the bottom end of the strain body 70 to be pressed on the central part of the top end of the force transmission component 72, and the area around the central part of the top end of the force transmission component 72 is not contacted with the area around the central part of the bottom end of the strain body 70, so that the central part and the peripheral part of the strain body 70 are deformed under the gravity of the vehicle, and the weight of the vehicle is convenient to measure.

Specifically, the force transmission member 72 may be a force transmission column, a downward concave connection groove 74 is formed in a central portion of a top end of the force transmission column, a downward convex connection column 73 is formed in a central portion of a bottom end of the force receiving strain body 70, and the connection column 73 is inserted into the connection groove 74. The bottom end of the connecting column 73 is in contact with the bottom end of the connecting groove 74, and a gap is formed between the part of the top end of the force transmission column, which is positioned around the connecting groove 74, and the part of the bottom end of the stressed strain body 70, which is positioned around the connecting column 73. So that the strain body 70 is deformed near the boundary of the outer wall of the connecting column 73. The middle part of the bottom surface of the connecting groove 74 is provided with an upward arc-shaped upper convex part 86, so that the force transmission of the contact surface of the connecting groove 74 and the connecting column 73 is centered as much as possible.

The strain gauge 71 is arranged at the top end of the stressed strain body 70 in the radial direction, the strain gauge 71 spans the boundary of the outer wall of the connecting column 73 in the radial direction, and the strain gauge 71 is located at the position where the stressed strain body 70 deforms and deforms along with the stressed strain body 70.

The top end of the stressed strain body 70 is provided with a circuit board 75, the strain gauge 71 is connected with the circuit board 75 through a thin wire 85, and the circuit board 75 is connected with the cable 32.

Hold the chamber 69 top and be provided with capping structure 76, capping structure 76 will hold chamber 69 upper portion and seal, and capping structure 76 is being connected with lateral wall 68 holding the chamber 69 top, has seted up on the capping structure 76 and has walked line hole 77, and cable 32 wears out from walking line hole 77 and holds the chamber.

The top of the capping structure 76 is provided with a filling cavity 79 with an upward opening, the filling cavity 79 is communicated with the accommodating cavity 69 through the wire hole 77, and the side wall of the filling cavity 79 is provided with a wire outlet 80.

The cable 32 is passed upwardly from the accommodating chamber 69 through the wire-passing hole 77 into the filling chamber 79, and is passed out of the filling chamber 79 through the wire-outlet hole 80 to the outside, and is connected to an external power supply or signal processing device.

The supporting arm 4 can be provided with a sensor wiring groove 31, a cable 32 of the weighing sensor 2 is positioned in the sensor wiring groove 31, one end of the sensor wiring groove 31 is communicated with the threaded hole 7, and the other end of the sensor wiring groove reaches the edge of the supporting arm 4.

The cable sleeve 81 is arranged at the outlet hole 80, the filling glue 82 for sealing is arranged in the filling cavity 79 and the wiring hole 77, and the filling glue 83 for sealing is arranged at the joint of the capping structure 76 and the side wall 68.

And a sealing ring 78 is arranged between the outer wall of the force transmission column and the inner wall of the accommodating cavity 69 for water prevention.

The side wall 68, the accommodating cavity 69, the stressed strain body 70, the force transmission column, the connecting column 73, the connecting groove 74 and the capping structure 76 are all cylindrical structures.

In order to restrict the upper and lower position of weighing sensor 2 in screw hole 7, the utility model discloses set up vertical first group spacing groove 16 on the screw hole 7 inner wall on support arm 4, set up vertical second group spacing groove 17 on the outer wall of weighing sensor 2 lateral wall 68, when weighing sensor 2 revolves one in first group spacing groove 16 and aligns with one in the second group spacing groove 17 in screw hole 7, insert spacer pin 18 in the spacing space that a first group spacing groove 16 and a second group spacing groove 17 of aligning formed. After inserting the spacer pin 18, the weighing sensor 2 can not twist soon again and rotate, and the weighing sensor 2 locks, prevents that the weighing sensor 2 is not hard up in the use, restricts the upper and lower position of system weighing sensor 2.

The first group of limiting grooves 16 are uniformly distributed on the inner wall of the threaded hole 7, the second group of limiting grooves 17 are uniformly distributed on the outer wall of the side wall 68 of the weighing sensor 2, and common divisor does not exist between the number of the first group of limiting grooves 16 and the number of the second group of limiting grooves 17.

For example, the number of the first set of limiting grooves 16 is 9, the number of the second set of limiting grooves 17 is 16, no matter the load cell 2 rotates to any position in the threaded hole 7, two pairs of the first set of limiting grooves 16 and the second set of limiting grooves 17 are aligned together, and only one pair of the first set of limiting grooves 16 and the second set of limiting grooves 17 are aligned. According to the least common multiple principle in the mathematical knowledge, every time the weighing sensor 2 rotates 360 degrees, the first group of limiting grooves 16 and the second group of limiting grooves 17 have 16 × 9=144 times of opportunities to align, that is, every time the weighing sensor 2 rotates 1 week, the sensor sinks by one pitch (for example, 3 mm), 144 equidistant points are located in the distance of 3mm for locking, and the locking and anti-loose function can be performed under the extremely fine adjustment state of the weighing sensor 2.

The utility model discloses do not restrict the structural style of the spacing groove 17 of first group of spacing groove 16 and second group, it is exemplary, for convenient processing, first group of spacing groove 16 is the semicircular groove, and the spacing groove 17 of second group is the rectangular groove.

The first set of limiting groove 16 is arranged downwards from the top end of the inner wall of the threaded hole 7, the top end of the first set of limiting groove 16 is flush with the top end of the threaded hole 7, the bottom end of the first set of limiting groove 16 is higher than the bottom end of the threaded hole 7, namely the depth of the first set of limiting groove 16 is smaller than the height of the threaded hole 7, the first set of limiting groove 16 is only arranged on the upper portion of the threaded hole 7, and the lower end of the first set of limiting groove 16 is not communicated with the upper portion of the threaded hole 7. Similarly, the second set of limiting grooves 17 is arranged downward from the top end of the side wall 68 of the weighing sensor 2, the top end of the second set of limiting grooves 17 is flush with the top end of the side wall 68, the bottom end of the second set of limiting grooves 17 is higher than the bottom end of the side wall 68, that is, the depth of the second set of limiting grooves 17 is smaller than the height of the weighing sensor 2, the second set of limiting grooves 17 are only arranged on the upper portion of the side wall 68 of the weighing sensor 2, and the lower end of the second set of limiting grooves 17 is obstructed.

The bottom ends of the first group of limiting grooves 16 and the second group of limiting grooves 17 are not communicated, and the limiting pins 18 are limited in downward depth, so that the limiting pins 18 are prevented from falling below the weighing sensor 2 and the threaded holes 7.

The aforementioned limit pin 18 may include a vertical pin body 36 and a lifting handle 37 at the top of the pin body 36, which facilitates insertion and removal of the limit pin 18. In one example, the carrying handle 37 is horizontally disposed.

A spring collar 35 is arranged at the contact position of the top of the weighing sensor 2 and the threaded hole 7, and the spring collar 35 is positioned at the top ends of the limiting pin 18 and the cable 32 and can press the limiting pin 18 and the cable 32 to prevent the limiting pin 18 from moving upwards.

In order to facilitate the rotation of the weighing sensor 2, a vertically downward wrench rotation hole 19 is formed in the top end of the side wall of the weighing sensor 2, and the weighing sensor 2 can be screwed by inserting the wrench rotation hole 19 through a special rotating wrench 38.

In one example, the rotating wrench 38 includes a vertical sleeve 39, a horizontal handle 40 is disposed at the top end of the sleeve 39, a flange plate 41 protruding outward in a flange manner is disposed at the bottom end of the sleeve 39, a pin connecting plate 42 is fixedly connected to the bottom end of the flange plate 41, a vertical pin 43 is disposed at the bottom end of the pin connecting plate 42, and the number of the pins 43 is the same as the number of the wrench rotating holes 19, and is at least two. During the use, will rotate spanner 38 and push down from weighing sensor 2 upper direction for round pin axle 43 inserts in spanner rotation hole 19, to handle 40 application of force, make rotatory spanner 38 rotatory, drive weighing sensor 2 rotatory to screw hole 7 in.

As an improvement of the embodiment of the utility model, bearing seat 5 can include bottom bearing plate 9 and side wall board 10, 10', 10", bottom bearing plate 9 and side wall board 10, 10', 10" enclose into inboard and the open chamber 6 of weighing of upside, weigh chamber 6 and communicate with each other through its open inboard and the inside weighing platform cavity 87 of weighing platform frame 3 for make support arm 4 outwards get into weigh in the chamber 6, the upside is uncovered and is used for conveniently maintaining weighing sensor 2.

The weighing cavity 6 is internally provided with a sensor boss 11 on a bottom bearing plate 9, after the scale core 1 is placed on the weighing platform outer frame 3, the supporting arm 4 extends inside the weighing cavity 6, and the bottom end of a stress strain body 70 or the bottom end of a force transmission part 72 of the weighing sensor 2 is pressed on the top end of the sensor boss 11.

Specifically, the number of the side coamings 10, 10', 10 "is three, three side coamings 10, 10', 10" are vertically fixed (for example, welded) on the bottom bearing plate 9, the three side coamings 10, 10', 10 "enclose a concave structure with an open inner side, and the concave structure is open at the upper and lower parts and forms a weighing cavity 6 with the bottom bearing plate 9.

Wherein, first piece side bounding wall 10 and second piece side bounding wall 10 'are parallel with weighing platform frame 3's width direction, and first piece side bounding wall 10 and second piece side bounding wall 10 'are at a certain distance apart in the length direction of weighing platform frame 3, and third piece side bounding wall 10 "is parallel with the length direction of weighing platform frame 3, and the outer end fixed connection of third piece side bounding wall 10" and first piece side bounding wall 10 and second piece side bounding wall 10'.

The three side coamings 10, 10' can be an integral structure or a split structure and are fixed with each other by welding and other modes. The outer sides of the three side coamings 10, 10 'can also be provided with vertical rib plates 59 for enhancing the strength of the side coamings 10, 10'.

Limiting blocks 14, 14' and 14' fixed with the bottom bearing plate 9 and/or the side coamings 10, 10' and 10' are arranged in the weighing cavity 6, the supporting arm 4 is positioned in a space limited by the limiting blocks 14, 14' and 14', a set gap is formed between the limiting blocks 14, 14' and the side wall of the supporting arm 4, and an elastic cushion 15 which can be a polyurethane elastic cushion is arranged in the gap.

Specifically, the number of the limiting blocks 14, 14 'and 14 ″ can also be three, the three limiting blocks 14, 14' and 14 ″ enclose a concave structure with an open inner side, and the concave structure is open up and down. Three limit blocks 14, 14 'and 14' are fixed with the bottom bearing plate 9 and/or the side coamings 10, 10 'and 10', the elastic cushion 15 between the three limit blocks 14, 14 'and the side wall of the support arm 4 plays a role of buffering, and the support arm 4 is prevented from being hard-touched with the limit blocks 14, 14'.

The first stopper 14 and the second stopper 14' are respectively fixed on the inner surfaces of the first side enclosing plate 10 and the second side enclosing plate 10' and are used for being matched with two side surfaces of the supporting arm 4, and an elastic cushion 15 is arranged in the space between the first stopper 14 and the second stopper 10 '. The third limiting block 14 'is fixed on the upper surface of the bottom bearing plate 9, and the third limiting block 14' is fixedly connected with the outer ends of the first limiting block 14 and the second limiting block 14 'and is used for being matched with the outer end face of the supporting arm 4, and an elastic pad 15 is arranged in the space between the third limiting block 14' and the second limiting block.

The first stopper 14, the second stopper 14' and the third stopper 14 "may be three separate structures, or the third stopper 14" and the first stopper 14 (or the second stopper 14 ') may be an integral structure, or the first stopper 14, the second stopper 14' and the third stopper 14 "may be an integral structure.

The space between the third limiting block 14 'and the third side enclosing plate 10' forms a line concentration box installation cavity 88, a line routing window 60 is formed in the third limiting block 14', threading holes 21 are formed in the parts, located in the line concentration box installation cavity 88, of the first side enclosing plate 14 and the second side enclosing plate 14', threading pipes 22 are arranged on the threading holes 21, and the routing of the weighing sensor 2 penetrates into the line concentration box installation cavity 88 through the line routing window 60, is connected with a line concentration box, enters the threading pipes 22 through the threading holes 21 to be gathered and is connected with equipment such as an external power source and a signal processing device.

In recent years, the problem of road overload in China is increasingly severe, and a high-speed dynamic automobile weighing scale which is installed on a road and used for weighing and detecting passing vehicles without stopping has great market demand. However, when the vehicle passes on the weighing platform table-board, the weighing platform table-board is easy to vibrate due to the impact of the vehicle, so that the weighing sensor vibrates, the deformation generated by the vibration of the weighing sensor is coupled with the deformation generated by the normal pressure applied to the weighing sensor, and weighing errors can be caused. The faster the vehicle speed, the more severe the vibration of the load cell, and the greater the weighing error.

Therefore, the existing automobile weighing apparatus can only weigh the passing vehicles at low speed (below 20 km/h), has the problems of insufficient precision and poor stability in high-speed weighing, is difficult to adapt to outdoor all-weather work, has higher limits on road surface flatness, vehicle passing state and the like, and is difficult to meet the technical requirement of controlling the passing state of the road without stopping at the present stage.

In order to solve the above problem, the utility model discloses set up prepressing part 20, 20 'above support arm 4, be provided with prepressing part connection structure 63 on stopper 14, 14', 14 "and/or side bounding wall 10, 10', 10", prepressing part 20, 20' is connected to side bounding wall 10, 10', 10 "and/or stopper 14, 14', 14" through prepressing part connection structure 63 is on, also is fixed connection to weighing platform frame 3 exactly. And the pre-pressing pieces 20, 20' press the support arm 4 from above so that the bottom end of the force-receiving straining body 70 or the bottom end of the force-transmitting member 72 of the load cell 2 presses against the top end of the sensor boss 11 with a set pressure.

The pre-pressing pieces 20 and 20' are arranged to apply a certain pre-pressure (for example, 5 tons of pressure) to each weighing sensor 2 under the condition of no load, so that the weighing sensors 2 are tightly attached to the weighing platform outer frame 3, the measuring range of a part of the sensors is reduced, the stability of a weighing body is kept, the sensor is prevented from jumping caused by vibration when a vehicle passes through, the weighing is inaccurate, and the weighing device is particularly suitable for high-speed weighing of the vehicle.

Specifically, the method comprises the following steps: the utility model discloses a casting die 20, 20 'are connected to the support arm 4 on the weighing platform frame 3 in advance to with support arm 4 to side bounding wall 10, 10', 10 "and/or stopper 14, 14', 14" on the weighing platform frame 3 push down, make weighing sensor 2's atress foil gage 70 bottom or pass power part 72 bottom compress tightly the top of the sensor boss 11 on the weighing platform frame 3 all the time.

When a vehicle passes through the scale core 1 at a high speed, the weighing sensor 2 cannot vibrate due to the compressing action of the sensor 2 by the prepressing parts 20 and 20', the bottom end of the weighing sensor 2 is always in close contact with the sensor boss 11, weighing errors cannot be caused, and the weight of the vehicle is obtained by subtracting the set prepressing force from the value measured by the weighing sensor 2. The utility model discloses an automobile weighing apparatus can weigh to high-speed current vehicle, and precision is high, stability is good in high-speed weighing, can adapt to outdoor all-weather work, and is lower to the restriction of road surface roughness, vehicle current state etc. can reach the highway in the present stage and do not stop and manage super technical requirement.

In addition, among the prior art, after the vehicle went on the balance core, because weighing sensor supported the balance core, weighing sensor played the fulcrum effect of lever, when the vehicle was located weighing sensor one side, made the balance core perk of weighing sensor opposite side easily, after the vehicle passed through weighing sensor, the balance core whereabouts promptly of perk, leaded to weighing inaccurate. The faster the vehicle speed, the more violent the speed of balance core perk and whereabouts, the more inaccurate is weighed, can't satisfy the requirement of high-speed weighing. The utility model discloses a casting die 20, 20' push down support arm 4 in advance, and then will be connected with support arm 4 the balance core 1 fixed compress tightly the weighing platform frame 3 on, consequently balance core 1 can not stick up and whereabouts because of the gravity of vehicle, and the accuracy of weighing satisfies the requirement of high-speed weighing.

The present invention is not limited to the specific structural form of the preform, and several specific examples are given below.

Example one:

the pre-pressing member of the present example is a linear pressing block 20, the linear pressing block 20 is located above the support arm 4, and both ends 90, 91 of the linear pressing block 20 cross both sides of the support arm 4 in the length direction of the scale platform outer frame 3. A prepressing piece stop 92 is fixedly arranged on the inner wall of the side coaming 14' at one side of the supporting arm 4, one end part 90 of the linear pressing piece 20 is positioned below the prepressing piece stop 92, and the other end part 91 of the linear pressing piece 20 is downwards connected to a limit block 14 at the other side of the supporting arm 4 through a group of first bolts 93. The bottom of straight line shape briquetting 20 is provided with downward arc lower convex part 94, and the convex part 94 bottom is pressed on the support arm 4 top under the arc, presses weighing sensor 2 to the weighing platform frame 3 with the pressure of setting for.

In this example, the pre-pressing piece connecting structure 63 is a pre-pressing piece stop block 92 located on the inner side wall of the weighing cavity 6 and a bolt hole located on the limiting block 14.

Two ends 90, 91 of the linear pressing block 20 are connecting parts, a working part is arranged between the two connecting parts, the height of the connecting part is lower than that of the working part, and the arc-shaped lower convex part 94 is positioned in the middle of the bottom end of the working part.

Example two:

the pre-pressing member in this example is also a linear pressing block 20, and two ends 90, 91 of the linear pressing block 20 are connected downwards to two opposite limiting blocks 14, 14' at two sides of the supporting arm 4 respectively through a group of second bolts 98. The other structures of the linear compact 20 of this example are the same as those of the first example, and are not described again.

In this example, the pre-pressing member connecting structure 63 is a bolt hole located on the limiting blocks 14 and 14'.

Example three:

the prepressing piece comprises a circular pressing cover 20' made of metal materials, a cylindrical cavity 95 is formed in the circular pressing cover 20', two lug plates 96 are fixedly arranged on the side wall of the circular pressing cover 20', the two lug plates 96 are oppositely arranged on the same diameter of the circular pressing cover 20', and the two lug plates 96 and the circular pressing cover 20' are integrally manufactured and formed. The two lug plates 96 are provided with bolt holes, the two lug plates 96 are respectively connected downwards to two opposite limiting blocks 14 and 14 'positioned at two sides of the supporting arm 4 through a group of third bolts 97, the bottom end of the circular pressing cover 20' is pressed at the top end of the supporting arm 4, the upper part of the weighing sensor 2 is positioned in the cylindrical cavity 95, and the top of the cylindrical cavity 95 is provided with a dust cap 99.

In this example, the pre-pressing member connecting structure 63 is a bolt hole located on the limiting blocks 14 and 14'.

For preventing becoming flexible of first bolt 93, second bolt 98 and third bolt 97, realize support arm 4 and weighing sensor 2 decurrent pressure, ensure that casting die 20, 20 'can not take place not hard up under the vibration that the vehicle brought in advance, the utility model discloses set up locking structure, guaranteed weighing sensor 2's work precision, in use can play the locking that lasts, great reduction the maintenance work volume.

In one example, the anti-loosening structure is a set screw 100, the set screw 100 is disposed on a side wall of the end portion 90 and/or 91 of the linear pressing block 20 connected to the first bolt 93 or the second bolt 97, the set screws 100 are also disposed on side walls of the two lug plates 96 of the circular pressing cover 20', and the set screws 100 penetrate into the side walls of the end portion 90 and/or 9 of the linear pressing block 20 or the side walls of the lug plates 96 of the circular pressing cover 20' and abut against the side walls of the first bolt 93, the second bolt 98 or the third bolt 97 to prevent and prevent rotation and loosening of the first bolt 93, the second bolt 98 or the third bolt 97.

In another example thereof, the top ends of the first bolt 93 and the second bolt 97 are provided with locknuts 113.

In another example, the anti-loosening structure is an anti-rotation plate 101, the anti-rotation plate 101 is a metal plate, at this time, the number of the first bolts/the second bolts/the third bolts included in the group of the first bolts 93/the group of the second bolts 98/the group of the third bolts 97 is multiple, the screwing directions of the multiple first bolts/the second bolts/the third bolts of the same group are different and all the same, and the multiple first bolts/the second bolts/the third bolts of the same group are connected together through the anti-rotation plate 101.

The upper parts of the first bolt/the second bolt/the third bolt are provided with a non-circular positioning plate 102, the anti-rotation plate 101 is provided with a plurality of anti-rotation holes 103 matched with the positioning plate 102 in shape, and the positioning plates 102 of the first bolt/the second bolt/the third bolt in the same group are respectively positioned in the plurality of anti-rotation holes 103 of the anti-rotation plate 101.

When any one of the first bolt/the second bolt/the third bolt in the same group wants to rotate, the positioning plate 102 on the positioning plate 102 is driven to rotate, the positioning plate 102 is placed in the anti-rotation hole 103, the side wall of the positioning plate 102 is in contact with the inner wall of the anti-rotation hole 103, the rotation of the positioning plate 102 is prevented by the anti-rotation plate 101, and the anti-rotation and anti-loosening of the first bolt/the second bolt/the third bolt are further realized.

Specifically, the plate positioning plate 101 may have a regular polygonal structure such as a regular hexagon, a square, or a regular triangle, may have an elliptical shape, and may have an irregular shape such as a "D" shape. The number of the first bolt/the second bolt/the third bolt in the same group can be 2, and the anti-rotation plate 101 is linear; or the number of the first bolt/the second bolt/the third bolt in the same group can be 3, at this time, the anti-rotation plate 101 can be in a linear type, and can also be in a V shape, and the three bolts are respectively positioned on three vertexes of the V shape.

The lower part of the first bolt/the second bolt/the third bolt is a thread mounting part 104, the thread screwing directions of the thread mounting parts 104 are not all the same, the first bolt/the second bolt/the third bolt is also provided with a round pressing plate 105 which is positioned above the thread mounting part 104 and is fixedly connected with the thread mounting part 104, a non-round positioning plate 102 is fixed on the upper end surface of the pressing plate 105, a thread head 106 is fixed on the upper end surface of the non-round positioning plate 102, and the thread screwing direction on the thread head 106 is the same as the thread screwing direction of the thread mounting part 104.

To prevent the rotation prevention plate 101 from being disengaged from the first bolt/second bolt/third bolt, the first bolt-

A nut 107 for pressing the anti-rotation plate 101 is connected to a screw head 106 of the second bolt/third bolt above the anti-rotation plate 101; the lower surface of the nut 107 is in contact with and pressed against the upper surface of the anti-rotation plate 101, so that the upward movement of the anti-rotation plate 101 is limited, and the anti-rotation plate 101 is prevented from being separated from the first bolt/second bolt/third bolt, so that the anti-rotation plate 101 continuously plays a role in preventing rotation and loosening for the first bolt/second bolt/third bolt.

Or, the side wall of the first bolt/the second bolt/the third bolt above the anti-rotation plate 101 is provided with an insertion hole 108, two ends of the spring expansion link 109 are respectively inserted into the insertion holes 108 of the two first bolts/the second bolts/the third bolts in the same group, and the bottom end of the spring expansion link 109 is pressed at the top end of the anti-rotation plate 101.

Spring telescopic link 109 includes first pole 110, second pole 111 and spring 112, first pole 110 inboard is equipped with the spring groove, spring 112 is located the spring groove, the one end of second pole 111 stretches into the spring groove, during the installation, stretch into a jack 108 with the tip of first pole 110, stretch into another jack 108 with the tip of second pole 111, first pole 110 and second pole 111 all compress tightly in the jack that corresponds under spring 112's effect this moment, and the lower surface of first pole 110 and the last surface contact of preventing rotating plate 101, and then realize along the bolt axial spacing to preventing rotating plate 101.

The utility model discloses a weighing structure of automobile weighing apparatus and balance core 1 and the cooperation of weighing platform frame 3 form automobile weighing apparatus. The utility model discloses do not restrict the form of balance core 1 and weighing platform frame 3, wherein, a concrete implementation of balance core 1 is:

the scale core 1 comprises a scale platform surface 25 and a scale supporting beam 26, and the scale supporting beam 26 is arranged at the bottom of the scale platform surface 25. The support arm 4 is fixed on the weighing platform support beam 26 and extends outwards from the weighing platform surface 25 and the weighing platform support beam 26 at the periphery.

The weighing platform support beam 26 can be a U-shaped beam, the opening of the U-shaped beam is upward, and the length direction of the U-shaped beam 26 is parallel to the length direction of the weighing platform surface 25.

The number of the U-shaped beams 26 is plural, for example, 2, and the plural U-shaped beams 26 are arranged side by side at a certain interval in the width direction of the platform surface 25. Reinforcing rib plates 44 which are used for fixedly connecting the side walls of two adjacent U-shaped beams 26 together are arranged in the space between two adjacent U-shaped beams 26, the number of the reinforcing rib plates 44 can be one group or multiple groups, and each group can comprise a plurality of plates which are parallel to each other. Bottom connecting plates 45 which fixedly connect the bottom walls of all the U-shaped beams 26 are arranged below the U-shaped beams 26, end enclosure end plates 46 are respectively and fixedly arranged at two ends of the U-shaped beams 26 in the length direction, and one end enclosure end plate 46 seals the end faces of one end of all the U-shaped beams 26.

The U-beam 26, the bottom connecting plate 45, the end plate 46 and the reinforcing rib plate 44 are fixed together by welding to form a rectangular support structure, the bottom surface and the side surface of the support structure are closed surfaces, the top surface is not closed, and the weighing platform surface 25 is positioned on the top surface of the support structure. Specifically, the weighing platform surface 25 is fixed on the top ends of the U-shaped beam 26 and the end plate 45 through welding to form a whole. The periphery of the weighing platform surface 26 extends outwards to the outside of the U-shaped beam 26 and the end plate 45 by a set distance, and the extending edge of the weighing platform surface 25 is used for being placed on the weighing platform outer frame 3 around the weighing core assembly.

The support arm 4 can comprise a support arm body 33 and a connecting structure 34 connected to the support arm body 33, the threaded hole 7 opening onto the support arm body 33, the connecting structure 34 being intended to be fixed to the U-beam 26. Preferably, the number of the support arms 4 is four, and the four support arms 4 are symmetrically arranged at positions close to both ends in the longitudinal direction of the U-shaped beam 26.

Connection structure 34 may include the stiffening plate 47 of a vertical setting and the stud board 48 of two vertical settings that are located the stiffening plate 47 inboard, and the stiffening plate 47 is parallel with the length direction of U type roof beam 26, and stud board 48 is parallel with the width direction of U type roof beam 26 to two stud boards 48 set up side by side at the certain interval of U type roof beam 26's length direction interval.

A supporting arm passing hole 49 is formed in the reinforcing plate 47, and the supporting arm body 34 penetrates through the supporting arm passing hole 49 and is welded and fixed; the vertical rib plate 48 is provided with a matching window 50, two sides 51 of the support arm body 33 on the inner side of the reinforcing plate 47 are respectively positioned in the matching window 50 and are welded and fixed, and the outer end of the vertical rib plate 48 is welded and fixed on the inner side of the reinforcing plate 47.

A connecting rod 52 for fixedly connecting the inner parts of the two vertical rib plates 48 is arranged between the two vertical rib plates 48, and an inner reinforcing plate 53 for fixedly connecting the lower parts of the two vertical rib plates 48 is arranged between the two vertical rib plates 48.

The outer side wall and the bottom wall of the outermost U-shaped beam 26 are respectively provided with a side wall window 54 and a bottom wall window 55, and the inner side wall of the outermost U-shaped beam 26 is provided with a stud plate mounting window 56.

The reinforcing plate 47 is positioned outside the outer side wall of the outermost U-shaped beam 26, and the screw hole 7 is opened in the support arm body 33 outside the reinforcing plate 47. The stud plate 48 extends inward into the U-shaped beam 26 from the side wall window 54, the bottom of the stud plate 48 is positioned in the bottom wall window 55 and fixed by welding, and the upper portion of the inner side of the stud plate 48 is positioned in the stud plate mounting window 56 and fixed.

Two side surfaces of the reinforcing plate 47 parallel to the width direction of the U-shaped beam 26 are fixedly connected with the outer side wall of the outermost U-shaped beam 26 through a side rib plate 57 respectively, the bottom surface of the reinforcing plate 47 is fixedly connected with the outer side wall of the outermost U-shaped beam 26 through a bottom sealing plate 58, and the inner side of the bottom sealing plate 58 extends into the space between the bottom ends of the two vertical rib plates 48 and is fixed with the bottom ends of the two vertical rib plates 58.

The dimension of the top of the stud plate 48 in the width direction of the U-shaped beam 26 is larger than the width of the top of the U-shaped beam 26, so that the upper part of the inner side of the stud plate 48 extends into the stud plate mounting window 56 and is fixed. The dimension of the bottom wall window 55 in the width direction of the U-shaped beam 26 is not more than half of the width of the bottom of the U-shaped beam 26, preventing the strength of the U-shaped beam 26 from being weakened excessively, and correspondingly, the dimension of the bottom of the vertical rib plate 48 in the width direction of the U-shaped beam 26 is not more than half of the width of the bottom of the U-shaped beam 26.

One specific implementation manner of the weighing platform outer frame 3 is as follows:

the weighing platform outer frame 3 comprises outer frame plates 27, 27' and 27 ″ which are vertically arranged, and the bearing seat 5 is arranged on the outer frame plates 27 and 27' and is positioned outside the outer frame plates 27 and 27 '. The reinforcing mesh 30 is arranged outside the outer frame plates 27, 27', 27", a supporting steel structure 64 is arranged below the bottom bearing plate 9, and the supporting steel structure 64 is positioned outside the outer frame plates 27, 27', 27" and is used for supporting the bottom bearing plate 9. The rebar grid 30 and the supporting steel structure 64 outside the outer deckle plates 27, 27', 27 "are used for casting concrete, i.e. the portion between the outside of the outer deckle plates 27, 27', 27" and the road.

The top ends of the side coamings 10, 10 'and 10' are provided with upper end plates 12 extending to the outer side of the weighing cavity 6, namely the upper end plates 12 are positioned at the periphery of the top end of the weighing cavity 6, and concrete pouring air outlets 13 are formed in the upper end plates 12 so that concrete pouring is compact.

The outer frame plate 27, 27', 27 "includes two balance sideboard 27, 27' and at least one balance head plate 27", two balance sideboard 27, 27 'are parallel with the length direction of weighing platform frame 3, and two balance sideboard 27, 27' interval certain distance on the width direction of weighing platform frame 3, at least one balance head plate 27 "and two balance sideboard 27, 27 'at least one end fixed connection, and balance head plate 27" is parallel with the width direction of weighing platform frame 3, two balance sideboard 27, 27' and at least one balance head plate 27 "enclose into the open or both ends confined rectangle structure in one end, form the overall structure of weighing platform frame 3.

The number of the bearing seats 5 is four, and the four bearing seats 5 are symmetrically arranged at the positions of the two end parts in the length direction of the outer frame plate, namely, at the positions close to the two end parts on the two scale edge plates 27 and 27'.

The inner side of the weighing cavity 6 is provided with a movable coaming 114 in an opening way, the lower part of the movable coaming 114 is provided with a support arm passing window 115, and the support arm 4 passes through the support arm and passes through the window 115 to penetrate into the weighing cavity 6.

The top of the side enclosing plate 10, 10' and the top of the outer side of the movable enclosing plate 114 are provided with sealing rubber strip mounting grooves 62, a first group of sealing rubber strips 24 are arranged in the sealing rubber strip mounting grooves 62, the first group of sealing rubber strips 24 are arranged in a closed circle on the opening of the upper side of the weighing cavity 6, and a top cover 23 is arranged on the opening of the upper side of the weighing cavity 6 and on the top of the first group of sealing rubber strips 24. Be provided with top cap connecting bolt hole 61 on stopper 14, 14', 14", top cap 23 is through bolted connection downwards to the top cap connecting bolt hole 61 on stopper 14, 14', 14" for top cap 23, first group joint strip 24 will weigh chamber 6 and external environment and seal, protect each part in weighing chamber 6, waterproof dustproof.

The inner sides of the outer frame plates 27, 27 'and 27' and the inner side of the movable enclosing plate 114 are provided with a V-shaped groove 28, the opening of the V-shaped groove 28 is upward, a second group of sealing rubber strips 29 are arranged in the inner part of the V-shaped groove, the second group of sealing rubber strips 29 are arranged at the edge of the weighing platform cavity 87 in a closed way, and the edge of the weighing platform surface 25 of the weighing core 1 is seated on the second group of sealing rubber strips 29 on the V-shaped groove 28. The second group of sealing rubber strips 29 deform under the gravity of the scale core 1, so that the V-shaped grooves 28 are fully filled with the second group of sealing rubber strips 29 and are tightly attached to prevent water from entering the lower part of the scale platform 25.

The scale edge plates 27, 27' and the scale head plate 27 ″ each include a lower template 65 and an upper steel structure plate 66, the lower template 65 and the upper steel structure plate 66 are both used as a template for pouring concrete, the upper steel structure plate 66 can play a role in reinforcing and supporting, the upper steel structure plate 66 can be a channel steel, and the V-shaped groove 28 is formed in the inner side surface of the upper steel structure plate 66. A supporting plate 67 is arranged at one end of an opening of the rectangular structure enclosed by the two scale edge plates 27 and 27' and the at least one scale edge plate 27", a V-shaped groove 28 is also arranged on the supporting plate 67, so that the V-shaped groove 28 is closed in a circle on the periphery of the rectangular structure, and a second group of closed sealing rubber strips 29 is arranged in the circle.

A connecting cross brace 89 is arranged between the two weighing platform plates 27 and 27' so that the weighing platform outer frame 3 forms an integral firm structure.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (12)

1. The utility model provides an automobile weighing apparatus structure of weighing which characterized in that, includes weighing sensor, is used for fixing on the balance core of automobile weighing apparatus and outwards stretches out the support arm of balance core and the bearing seat that is used for setting up on the platform frame of automobile weighing apparatus, wherein:

the weighing device is characterized in that a weighing cavity is formed in the bearing seat, the supporting arm extends into the weighing cavity through the inner side of the weighing cavity, a vertical threaded hole is formed in the supporting arm, external threads are arranged on the outer wall of the side wall of the weighing sensor, the weighing sensor is screwed in the threaded hole, and the bottom end of the weighing sensor is pressed at the bottom of the weighing cavity.

2. The weighing structure of claim 1, wherein a vertical accommodating cavity is formed in a side wall of the weighing sensor, a stressed strain body fixedly connected with the side wall is arranged in the accommodating cavity, a strain gauge is fixedly arranged at the top end of the stressed strain body, and the strain gauge is connected with a cable;

the bottom end of the stressed strain body extends downwards from the bottom end of the accommodating cavity to a certain distance from the bottom end of the side wall; or a force transmission component is arranged below the stressed strain body, and the bottom end of the force transmission component extends downwards from the bottom end of the accommodating cavity to the bottom end of the side wall for a certain distance;

the bottom end of the stress strain body or the bottom end of the force transmission component is pressed at the bottom of the weighing cavity.

3. The weighing apparatus of claim 2, wherein the stressed strain body is integrated with the sidewall, and a top center of the force-transmitting member is in contact with a bottom center of the stressed strain body.

4. The weighing structure of claim 2, wherein a first set of vertical limiting grooves are formed in the inner wall of the threaded hole of the supporting arm, a second set of vertical limiting grooves are formed in the outer wall of the side wall of the weighing sensor, and when the weighing sensor is screwed into the threaded hole to align one of the first set of limiting grooves with one of the second set of limiting grooves, a limiting pin is inserted into a limiting space formed by the aligned first set of limiting grooves and the aligned second set of limiting grooves.

5. The weighing apparatus of claim 4, wherein the first set of limiting grooves are uniformly distributed on the inner wall of the threaded hole, the second set of limiting grooves are uniformly distributed on the outer wall of the side wall of the weighing sensor, and there is no common divisor between the number of the first set of limiting grooves and the number of the second set of limiting grooves.

6. The weighing structure of the automobile weighing scale of any one of claims 2-5, wherein the bearing seat comprises a bottom bearing plate and a side enclosing plate, and the bottom bearing plate and the side enclosing plate enclose a weighing cavity with an opening at the inner side and the upper side; the weighing cavity is arranged on the bottom bearing plate and is provided with a sensor boss, and the bottom end of the stress strain body or the bottom end of the force transmission component is pressed on the top end of the sensor boss.

7. The weighing apparatus weighing structure of claim 6, wherein the weighing cavity is provided with a limiting block fixed with the bottom bearing plate and/or the side surrounding plate, the supporting arm is located in a space limited by the limiting block, a set gap is formed between the limiting block and the side wall of the supporting arm, and an elastic cushion is arranged in the gap.

8. The weighing apparatus of claim 7, wherein a pre-pressing member is provided above the support arm, the pre-pressing member is downwardly coupled to the side wall and/or the stopper, and the pre-pressing member presses the support arm down so that a bottom end of the load receiving strain body or a bottom end of the force transmitting member of the weighing cell is pressed against a top end of the sensor boss with a set pressure.

9. The weighing apparatus weighing structure of claim 8, wherein the pre-pressing member is a linear pressing block, a pre-pressing member stop is fixedly arranged on the inner wall of the side wall plate on one side of the supporting arm, one end of the linear pressing block is positioned below the pre-pressing member stop, the other end of the linear pressing block is downwards connected to a limit block on the other side of the supporting arm through a group of first bolts, a downward arc-shaped lower convex part is arranged at the bottom end of the linear pressing block, and the bottom end of the arc-shaped lower convex part presses against the top end of the supporting arm;

or, the pre-compaction piece is including circle ring gland, circle ring gland inside is cylindrical cavity, the fixed two otic placodes that are provided with on the lateral wall of circle ring gland, two otic placodes are connected to the position through a set of third bolt downwardly directed respectively on two relative stoppers of support arm both sides, circle ring gland bottom is pressed the support arm top, weighing sensor's upper portion is located in the cylindrical cavity, cylindrical cavity top is provided with the dust cap.

10. The weighing apparatus of claim 9, wherein the first bolt and the third bolt are each lockable by a locking structure, wherein:

the anti-loosening structure comprises a set screw, the set screw is arranged on the side wall of the end part of the linear pressing block connected with the first bolt and on the side walls of the two lug plates of the circular pressing cover, and the set screw penetrates into the side wall of the end part of the linear pressing block or the side wall of the lug plate of the circular pressing cover and abuts against the side wall of the first bolt or the third bolt;

or the number of the first bolts/the third bolts contained in the group of the first bolts/the group of the third bolts is multiple, the screw thread turning directions of the first bolts/the third bolts in the same group are not all the same, and the first bolts/the third bolts in the same group are connected together through an anti-rotation plate; the upper portions of the first bolts/the third bolts are provided with non-circular positioning plates, a plurality of anti-rotation holes matched with the positioning plates in shape are formed in the anti-rotation plates, and the positioning plates of the first bolts/the third bolts in the same group are respectively positioned in the anti-rotation holes of the anti-rotation plates.

11. The weighing structure of claim 7, wherein the weighing cavity is provided with a movable coaming on the inner side of which an opening is formed, and the lower part of the movable coaming is provided with a supporting arm passing window;

the side bounding wall top and activity bounding wall outside top are provided with a first set of joint strip, a first set of joint strip is in the upside in the chamber of weighing is uncovered and becomes a week closed setting, the upside in the chamber of weighing is uncovered first set of joint strip top is provided with the top cap.

12. The weighing structure of claim 11, wherein the top end of the side enclosing plate is provided with an upper end plate extending to the outer side of the weighing cavity, and the upper end plate is provided with a concrete pouring air outlet;

the limiting block with form the line concentration box installation cavity between the lateral bounding wall, be provided with the through wires hole on the lateral bounding wall, be used for setting up the threading pipe on the through wires hole.

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