CN110686761A

CN110686761A - Portable spin-pressurization rapid calibrating device for underground weighbridge

Info

Publication number: CN110686761A
Application number: CN201910303663.3A
Authority: CN
Inventors: 李勇; 王继迎; 刘红伟; 朱珂; 高岳阳; 廖晓华; 王兴鹏; 刘宽; 李金阳; 安卓; 王兴亿; 王晓波
Original assignee: Beijing Weiheng Technology Co Ltd
Current assignee: Beijing Weiheng Technology Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-01-14
Anticipated expiration: 2039-04-16
Also published as: CN110686761B

Abstract

The invention belongs to the technical field of underground weigher verification, and particularly relates to a portable spin-pressurization quick verification device for an underground weigher; the portable spinning pressurization rapid detection device for the underground weighbridge comprises a supporting plate, a weighing plate, 4 pressurization rods and a planetary gear set, wherein the supporting plate, the weighing plate and the planetary gear set are parallel to each other and are sequentially arranged from bottom to top. The invention provides a portable spin-pressurizing rapid calibrating device for a weighbridge with a new structure, which is characterized in that a tested sensor and a measuring sensor are simultaneously subjected to serial stress application by a planetary gear set, and the weighbridge is identified according to the measuring values of the two sensors so as to meet the specified requirements when in use; the device can reach the requirement of examination regulation fast, has improved examination efficiency, and large-scale weighing apparatus user no longer need invest in a large amount of manpower, material resources and financial resources when examining and determine, in the city or the inconvenient part of traffic, can not receive the restriction.

Description

Portable spin-pressurization rapid calibrating device for underground weighbridge

Technical Field

The invention belongs to the technical field of underground weigher detection, and particularly relates to a portable spin-pressurization quick detection device for an underground weigher.

Background

The method used for calibrating the current weighing apparatus at home and abroad adopts weights as a standard apparatus, and the standard apparatus has the following defects in practical use: firstly, the requirements of the verification regulations are difficult to meet in reality; secondly, the efficiency of the existing verification method is low; thirdly, the verification cost is high, manpower (10 people, 10 hours) is needed for carrying or hoisting equipment is needed, a large scale weighing apparatus user needs to invest a large amount of manpower, material resources and financial resources during verification, and the verification method is limited in places where cities or transportation is inconvenient.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a novel portable spin-pressurization rapid detection device for a weighbridge.

The specific technical scheme of the invention is as follows:

the invention provides a portable self-rotating pressurizing underground weigher rapid calibrating device which comprises a supporting plate, a weighing plate, 4 pressurizing rods and a planetary gear set, wherein the supporting plate, the weighing plate and the planetary gear set are parallel to each other and are sequentially arranged from bottom to top, a measured sensor is arranged between the supporting plate and the weighing plate, one end of the measured sensor is arranged on the supporting plate, the other end of the measured sensor is contacted with the lower end face of the weighing plate, a measuring sensor is arranged on the weighing plate, the measured sensor and the measuring sensor are oppositely arranged up and down, and the 4 pressurizing rods penetrate through the weighing plate and are respectively arranged at 4 corners of the supporting plate; the planetary gear set is connected with a motor through a central shaft, one end of the central shaft is connected with the motor, and the other end of the central shaft penetrates through the weighing plate and is rotatably connected to the supporting plate.

In a further improvement, the planetary gear set comprises an outer cover, a first bearing sleeved in the outer cover, an outer gear ring sleeved in the first bearing, a sun gear and 4 planetary gears, external threads are formed on the outer wall of the pressure rod, each planetary gear is respectively sleeved on each pressure rod and is respectively in threaded connection with the corresponding pressure rod, each planetary gear is respectively meshed with the sun gear and the outer gear ring, and the sun gear is sleeved on the central shaft and is connected with the central shaft through a key.

In a further improvement, through holes are formed in four corners of the weighing plate; the four corners of the supporting plate are respectively provided with a pressure rod base, the pressure rod base is a short pipe, an internal thread corresponding to the external thread in a threaded mode is formed inside the pressure rod base, and the height of the pressure rod base is smaller than the distance between the supporting plate and the weighing plate.

In a further improvement, the measured sensor and the measuring sensor are respectively connected with a detected weighing display of the weighing apparatus and a detected weighing display of the weighing apparatus.

The measured sensor comprises a sensor body, a steel ball and a limiting seat, the upper end face of the sensor body is in contact with the lower end face of the weighing plate, the lower end face of the sensor body and the upper end face of the limiting seat are provided with arc-shaped grooves matched with the steel ball, the limiting seat is in an inverted trapezoid shape, the lower end face of the limiting seat is fixed on the supporting plate, and the weighing plate is pressed against the steel ball through the sensor body.

In a further improvement, a first fixing component for fixing the sensor to be tested is arranged on the supporting plate, the first fixing component comprises a limiting groove arranged on the supporting plate, at least 4 fixing grooves respectively arranged on the periphery of the limiting groove and communicated with the limiting groove, telescopic cylinders respectively arranged in the fixing grooves, sliding blocks connected with telescopic rods of the telescopic cylinders and respectively sliding along the corresponding fixing grooves, and pressing blocks respectively connected with the sliding blocks through connecting rods and arranged in the limiting groove, the sensor to be tested is arranged in the limiting groove, and the pressing blocks press the limiting seat tightly.

In a further improvement, a second bearing, a spherical hinge base and a spherical hinge joint are arranged between the connecting rod and the pressing block, the second bearing is arranged at one end, close to the pressing block, of the connecting rod, the spherical hinge base is arranged on the second bearing, one end of the spherical hinge joint is arranged in the spherical hinge base, and the other end of the spherical hinge joint is connected with the pressing block.

In a further improvement, a steel plate is arranged between the supporting plate and the limiting seat.

The improved structure comprises a weighing plate, a wedge-shaped sliding groove is formed in the weighing plate along the length direction of the weighing plate, a fixed hanging ring is arranged at the center of the bottom end face of the wedge-shaped sliding groove, a wedge-shaped sliding block matched with the wedge-shaped sliding groove is arranged on the bottom end face of the measuring sensor, the center of the upper end face of the wedge-shaped sliding block coincides with the center of the lower end face of the measuring sensor, and a fixed hook matched with the fixed hanging ring is arranged at the center of the lower end face of the wedge-shaped sliding block.

The improved structure of the wall-mounted vacuum pump is characterized in that the motor is fixed on the wall through a second fixing component, the second fixing component comprises a support, a sucker, a vacuum pump and a pipeline, the motor is installed on the support, the open end of the sucker is sucked on the wall, the end face, opposite to the open end, of the sucker is arranged on the support, the vacuum pump is arranged on the support and passes through the pipeline and the sucker is communicated with the inside.

The invention has the following beneficial effects:

the invention provides a portable spin-pressurizing rapid calibrating device for a weighbridge with a new structure, which is characterized in that a tested sensor and a measuring sensor are simultaneously subjected to serial stress application by a planetary gear set, and the weighbridge is identified according to the measuring values of the two sensors so as to meet the specified requirements when in use; the device can reach the requirement of examination regulation fast, has improved verification efficiency, and the examination expense is low, and large-scale weighing apparatus user no longer need invest in a large amount of manpowers, material resources and financial resources when examining and determine, in the city or the inconvenient part of traffic, can not receive the restriction.

Drawings

FIG. 1 is a schematic structural diagram of a portable spin-pressure underground weighbridge rapid detection device in example 1;

FIG. 2 is a top plan view of the planetary gear set of embodiment 2;

FIG. 3 is a top view of the scale plate of example 2;

FIG. 4 is a partial cross-sectional view of the portable spin-pressurized rapid unbalance verification device of example 2;

FIG. 5 is a schematic diagram showing the structure of a portable spin-pressure underground weighbridge rapid assay device according to embodiment 3;

FIG. 6 is a schematic diagram showing the structure of a portable spin-pressure underground weighbridge rapid assay device according to embodiment 4;

FIG. 7 is a top view of a support plate according to embodiment 4;

FIG. 8 is a schematic structural view of a connecting rod according to embodiment 4;

FIG. 9 is a side view of the scale plate of example 5;

fig. 10 is a schematic structural view of a second fixing member according to embodiment 6.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings.

Example 1

The portable spinning pressurized rapid calibrating device for the underground weighbridge, which is provided by embodiment 1 of the invention, as shown in fig. 1, comprises a supporting plate 1, a

weighing plate

2, 4 pressurizing rods 3 and a planetary gear set 4, wherein the supporting plate 1, the weighing plate 2 and the planetary gear set 4 are parallel to each other and are sequentially arranged from bottom to top, a measured sensor 5 is arranged between the supporting plate 1 and the weighing plate 2, one end of the measured sensor 5 is arranged on the supporting plate 1, the other end of the measured sensor 5 is in contact with the lower end face of the weighing plate 2, a measuring sensor 6 is arranged on the weighing plate 2, the measured sensor 5 and the measuring sensor 6 are arranged in an up-down opposite manner, and the 4 pressurizing rods 3 penetrate through the weighing plate 2 and are respectively arranged at 4 corners of the supporting plate 1; the planetary gear set 4 is connected with a motor 8 through a central shaft 7, one end of the central shaft 7 is connected with the motor 8, and the other end of the central shaft 7 penetrates through the weighing plate 2 and is rotatably connected to the supporting plate 1.

In this embodiment, the rotation of the motor drives the central shaft to rotate, the rotation of the central shaft drives the planetary gear set to move axially and downwards, when the planetary gear set contacts a measuring sensor (preferably 0-20 tons (25 tons) of coriolis force sensors), pressure is applied to the measuring sensor, the measured sensor under the symmetrical plate of the simulated weight is pressurized, and the values of the two measuring sensors are compared to determine the error of the calibrated scale.

Example 2

As shown in fig. 2, the portable spinning pressure rapid calibrating device for a weigh bridge is different from embodiment 1 in that the planetary gear set 4 includes an outer housing 401, a first bearing 402 sleeved in the outer housing 401, an outer ring gear 403 sleeved in the first bearing 402, a

sun gear

404, and 4 planetary gears 405, an external thread is formed on an outer wall of the pressure rod 3, each planetary gear 405 is respectively sleeved on each pressure rod 3 and is respectively screwed with the corresponding pressure rod 3, each planetary gear 405 is respectively meshed with the sun gear 404 and the outer ring gear 403, and the sun gear 404 is sleeved on the central shaft 7 and is connected with the central shaft 7 through a key. In the embodiment, the sun wheel is connected with the central shaft, so that the central shaft drives the sun wheel to rotate and further drives each planetary wheel to rotate, the planetary wheels are meshed with the outer gear ring, so that the outer gear ring is driven to rotate by the rotation of the planetary wheels, and the bearing is arranged between the outer gear ring and the outer cover, so that the outer cover is fixed; when the downward sliding distance of the sun gear is small, a guide flat key is adopted, at the moment, the key is fixed on the central shaft by a screw, and the sun gear slides relative to the key and the central shaft; when the downward sliding distance of the sun gear is large, a sliding key is adopted, the sliding key is axially fixed on the sun gear and slides relative to a key groove on the central shaft together with the sun gear, and at the moment, a long key groove needs to be milled on the central shaft.

In the embodiment, the torque of the sun wheel is 1000N.m, the torques of the planet wheels are all 500N.m, and the gear transmission ratio is 1: 1; the outer cover is connected with the bearing and the bearing is connected with the outer gear ring through welding.

As shown in fig. 3 and 4, in the present embodiment, through holes 9 are provided at four corners of the scale plate 2; all be equipped with pressure bar base 10 on four angles of backup pad 1, pressure bar base 10 is the nozzle stub and inside takes shape have with the internal thread of external screw thread correspondence spiro union, the height of pressure bar base 10 is less than backup pad 1 with weigh the distance between the board 2. In the invention, 4 through holes are formed in the weighing plate so that the pressurizing rod can smoothly pass through the through holes, the short pipe with internal threads is arranged on the supporting plate, the height of the short pipe is based on the asymmetrical plate, and the short pipe can be in threaded connection with the bottom of the pressurizing rod so as to be convenient for fixing the pressurizing rod; the weighing plate and the screw rod can be fixed through bolts or not, and the weighing plate can be supported through a sensor to be tested; when the sensor is fixed, the weighing plate generates downward deformation to press the sensor to be measured; when the weighing plate is not fixed, the weighing plate and the measuring sensors on the weighing plate are supported by the measured sensors, so that the measured sensors have certain indication values, and the indication values need to be subtracted during final comparison; the screw is made of 12.9-grade high manganese steel, the thread pitch is 15mm, the diameter of the screw is 30mm, and the screw is subjected to carbonization and bluing treatment, can bear 30T without fracture, does not change 15T tension and has high thread strength.

Example 3

A portable spin-pressure rapid calibrating device for a weighbridge is shown in FIG. 5, and is different from embodiment 1 in that the sensor to be measured 5 and the measuring sensor 6 are respectively connected with a weighing display 11 of a to-be-calibrated weighbridge and a weighing display 12 of a calibrating instrument.

In the embodiment, after the hydraulic device presses the two sensors, the measured sensor and the measuring sensor respectively send the measured values to a weight display (preferably XK3190-A12+ E weight display controller) of the detected weighing apparatus and a weight display (preferably XK3190-A12+ E weight display controller) of the detected weighing apparatus for displaying, and the error of the detected weighing apparatus is determined by comparing the indicating values of the two displays; the display and the measurer can be connected through a wire or wirelessly, and the two displays are placed on the ground.

Example 4

The utility model provides a quick calibrating installation of portable spin pressurization weighbridge, as shown in fig. 6, with embodiment 1 difference, the sensor 5 that is surveyed includes sensor body 501, steel ball 502 and restriction seat 503, the up end of sensor body 501 with weigh the lower terminal surface contact of board 2, the lower terminal surface of sensor body 501 with the up end of restriction seat 503 all be equipped with steel ball 502 complex arc recess 504, restriction seat 503 is the down trapezoidal and lower terminal surface fixes on backup pad 1, it compresses tightly steel ball 502 to weigh board 2 through sensor body 501. Set up the restriction seat into falling trapezoidal in this embodiment, increased the atress area, not only improved measuring accuracy, can also save material, in order to guarantee measuring sensor's perpendicular atress, two arc recesses set up the central point that terminal surface put the department under restriction seat up end and the sensor body respectively.

As shown in fig. 7, in this embodiment, a first fixing assembly 13 for fixing the sensor 5 to be measured is disposed on the supporting plate 1, the first fixing assembly 13 includes a limiting groove 131 disposed on the supporting plate 1, at least 4 fixing grooves 132 respectively disposed around the limiting groove 131 and communicated with the limiting groove 131, telescopic cylinders 133 respectively disposed in the fixing grooves 132, sliders 134 connected to telescopic rods of the telescopic cylinders 133 and respectively sliding along the corresponding fixing grooves 132, and pressing blocks 136 respectively connected to the sliders 134 through connecting rods 135 and disposed in the limiting grooves 131, the sensor 5 to be measured is disposed in the limiting groove 131, and the pressing blocks 136 press the limiting seat 503 tightly. In the embodiment, a sensor to be tested is fixed on a supporting plate through a first fixing assembly, when the device is used, a limiting seat of the sensor to be tested is placed in a limiting groove, then a telescopic cylinder is started, a telescopic rod of the telescopic cylinder drives a sliding block to slide in the fixing groove along the length direction of the fixing groove, the sliding of the sliding block drives a pressing block to slide through a connecting rod, the telescopic cylinder stops working until the pressing block is tightly attached to the limiting seat, the limiting seat is pressed and fixed through a plurality of pressing blocks, the stabilizing effect is good, the device can be suitable for sensors to be tested of various sizes, and the problem that multiple times of punching are needed when the sensors to be tested of different sizes are adopted is avoided; meanwhile, the two telescopic cylinders which are oppositely arranged start and stop working at the same time, so that the sliding distances of the two sliding blocks which are oppositely arranged are the same, the measured sensor can be ensured to be positioned at the central position on the supporting plate, the measured sensor can further receive the pressure from the center of the lining plate, and the measuring accuracy can be further ensured; because the central shaft is rotationally connected with the central position of the supporting plate, the position of the first fixing component for fixing the measured sensor needs to deviate from the central position, and the longitudinal central shaft of the measured sensor and the longitudinal central shaft of the measuring sensor only need to be ensured to be superposed.

As shown in fig. 8, in this embodiment, a second bearing 137, a spherical hinge base 138 and a spherical hinge head 139 are disposed between the connecting rod 135 and the pressing block 136, the second bearing 137 is disposed at one end of the connecting rod 135 close to the pressing block 136, the spherical hinge base 138 is disposed on the second bearing 137, one end of the spherical hinge head 139 is disposed in the spherical hinge base 138, and the other end is connected to the pressing block 136. Set up the second bearing in this embodiment, ball pivot base and ball joint are for adjusting the compact heap, because the preferred inverted trapezoid of shape of restriction seat, can also be other shapes, press the angle that just needs to adjust the compact heap when fastening to the restriction seat this moment, guarantee the fixed effect of being surveyed the sensor for the example, it compresses tightly on the restriction seat to need the compact heap perpendicular or level, can realize the rotation on the horizontal plane of compact heap through the second bearing, realize the perpendicular or the level of compact heap and compress tightly, realize the space rotation of compact heap through ball joint, realize that the compact heap compresses tightly on the restriction seat of various shapes.

As shown in fig. 6, in the present embodiment, a steel plate 505 is disposed between the supporting plate 1 and the limiting seat 503. In the embodiment, the steel plate is arranged to compact the steel ball, the steel ball needs to be vertically placed and positively compacted during installation, and after the steel ball is completely installed, the steel ball is screwed by hands, if the steel ball can be easily rotated, no compaction is indicated, the steel plate needs to be arranged to compact the steel ball at the moment, and whether the compaction of the steel ball affects the measuring effect of the measured sensor.

Example 5

The utility model provides a quick calibrating installation of portable spin pressurization weighbridge, as shown in figure 9, is different from embodiment 1, it is equipped with wedge spout 14 to call on the board 2 along the length direction who calls board 2, just the central point department of the terminal surface of wedge spout 14 bottom is equipped with fixed recess 19, be equipped with fixed link 15 in the fixed recess 19, be equipped with on the bottom terminal surface of measuring sensor 6 with wedge spout 14 looks adaptation wedge slider 16, the central point of wedge slider 16 up end with the central point of terminal surface coincides under the measuring sensor 6, just the central point department of terminal surface is equipped with under the wedge slider 16 with fixed link 15 matched with fixed hook 17.

The embodiment is used for fixing the measuring sensor on the weighing plate and ensuring that the longitudinal central axis of the measuring sensor is coincident with the longitudinal central axis of the measured sensor, so that the forces applied to the measuring sensor and the measured sensor are the same, and the measuring error is reduced; during the use, slide wedge slider from one side opening part of wedge spout, stop sliding when hanging on first fixed couple until first fixed link, the stability of measuring sensor installation has further been guaranteed in the setting of first fixed link, couple, has avoided measuring sensor's removal and has influenced measuring accuracy

Example 6

The utility model provides a quick calibrating installation of portable spin pressurization subway, as shown in fig. 10, is different from embodiment 1, motor 8 passes through the fixed subassembly 18 of second and fixes on the wall, the fixed subassembly 18 of second includes support 181, sucking disc 182, vacuum pump 183 and pipeline 184, motor 8 installs on the support 181, the open end actuation of sucking disc 182 is on the wall, the terminal surface relative with the open end on the sucking disc 182 is located on the support 181, vacuum pump 183 is located on the support 181 and through pipeline 184 with sucking disc 182 is inside to be linked together.

The fixed subassembly of second sets up in this embodiment is in order to fix the motor on the wall, and then drives planetary gear set's downstream, during the use, all installs motor and vacuum pump on the support, passes the vacuum pump through the pipeline the sucking disc and with the inside intercommunication of sucking disc, with the sucking disc actuation on the wall at last, fixed motor that so not only can be stable can also install the motor in the optional position, has avoided the different problem that need punch many times of motor mounted position simultaneously.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.

Claims

1. A portable spin-pressurization rapid calibrating device for a subway platform scale is characterized by comprising a support plate (1), a weighing plate (2), 4 pressurizing rods (3) and a planetary gear set (4), the supporting plate (1), the weighing plate (2) and the planetary gear set (4) are mutually parallel and are sequentially arranged from bottom to top, a measured sensor (5) is arranged between the supporting plate (1) and the weighing plate (2), one end of the measured sensor (5) is arranged on the supporting plate (1), the other end of the measured sensor is contacted with the lower end surface of the weighing plate (2), the weighing plate (2) is provided with a measuring sensor (6), the measured sensor (5) and the measuring sensor (6) are arranged oppositely up and down, and 4 pressurizing rods (3) penetrate through the weighing plate (2) and are respectively arranged at 4 corners of the supporting plate (1); the planetary gear set (4) is connected with a motor (8) through a central shaft (7), one end of the central shaft (7) is connected with the motor (8), and the other end of the central shaft penetrates through the weighing plate (2) and is rotatably connected to the supporting plate (1).

2. The portable spin-pressure rapid weighbridge calibrating device according to claim 1, wherein the planetary gear set (4) comprises a housing (401), a first bearing (402) sleeved in the housing (401), an outer gear ring (403) sleeved in the first bearing (402), a sun gear (404) and 4 planetary gears (405), external threads are formed on the outer wall of the pressure rod (3), each planetary gear (405) is respectively sleeved on each pressure rod (3) and is respectively screwed with the corresponding pressure rod (3), each planetary gear (405) is respectively meshed with the sun gear (404) and the outer gear ring (403), and the sun gear (404) is sleeved on the central shaft (7) and is connected with the central shaft (7) through a key.

3. A portable spin-pressure rapid balance calibrating device according to claim 2, wherein the scale plate (2) is provided with through holes (9) at four corners; all be equipped with pressure bar base (10) on four angles of backup pad (1), pressure bar base (10) are the nozzle stub and inside take shape have with the internal thread of the corresponding spiro union of external screw thread, the height of pressure bar base (10) is less than backup pad (1) with call the distance between board (2).

4. A portable spin-pressure rapid weighbridge verification device as claimed in claim 1, wherein the sensor under test (5) and the measurement sensor (6) are connected to a weighbridge under test (11) and a calibrator (12) weight display, respectively.

5. The portable spin-pressure rapid neutral weigher calibrating device according to claim 1, wherein the sensor (5) to be measured comprises a sensor body (501), a steel ball (502) and a limiting seat (503), the upper end surface of the sensor body (501) is in contact with the lower end surface of the weighing plate (2), the lower end surface of the sensor body (501) and the upper end surface of the limiting seat (503) are both provided with arc-shaped grooves (504) matched with the steel ball (502), the limiting seat (503) is in an inverted trapezoid shape, the lower end surface of the limiting seat is fixed on the supporting plate (1), and the weighing plate (2) presses the steel ball (502) through the sensor body (501).

6. The portable spinning pressure rapid detection device for the weighbridge according to claim 5, wherein the support plate (1) is provided with a first fixing component (13) for fixing the sensor to be detected (5), the first fixing component (13) comprises a limiting groove (131) arranged on the support plate (1), at least 4 fixing grooves (132) respectively arranged around the limiting groove (131) and communicated with the limiting groove (131), telescopic cylinders (133) respectively arranged in the fixing grooves (132), sliding blocks (134) connected with telescopic rods of the telescopic cylinders (133) and respectively sliding along the corresponding fixing grooves (132), and pressing blocks (136) respectively connected with the sliding blocks (134) through connecting rods (135) and arranged in the limiting groove (131), the sensor to be detected (5) is arranged in the limiting groove (131), and each pressing block (136) presses the limiting seat (503).

7. The portable spin-pressure rapid neutral weigher calibrating device as claimed in claim 5, wherein a second bearing (137), a ball hinge base (138) and a ball hinge joint (139) are arranged between the connecting rod (135) and the pressing block (136), the second bearing (137) is arranged at one end of the connecting rod (135) close to the pressing block (136), the ball hinge base (138) is arranged on the second bearing (137), one end of the ball hinge joint (139) is arranged in the ball hinge base (138), and the other end of the ball hinge joint is connected with the pressing block (136).

8. A portable spin-pressure rapid balance verification device according to claim 5, characterized in that a steel plate (505) is provided between the support plate (1) and the limit seat (503).

9. The portable spin-pressure rapid calibrating device for the weighbridge is characterized in that a wedge-shaped sliding groove (14) is formed in the weighing plate (2) in the length direction of the weighing plate (2), a fixing groove (19) is formed in the center of the bottom end face of the wedge-shaped sliding groove (14), a fixing hanging ring (15) is arranged in the fixing groove (19), a wedge-shaped sliding block (16) matched with the wedge-shaped sliding groove (14) is arranged on the bottom end face of the measuring sensor (6), the center of the upper end face of the wedge-shaped sliding block (16) coincides with the center of the lower end face of the measuring sensor (6), and a fixing hook (17) matched with the fixing hanging ring (15) is arranged in the center of the lower end face of the wedge-shaped sliding block (16).

10. The portable spin-pressure rapid weighbridge calibrating device according to claim 1, wherein the motor (8) is fixed on a wall through a second fixing component (18), the second fixing component (18) comprises a bracket (181), a suction cup (182), a vacuum pump (183) and a pipeline (184), the motor (8) is mounted on the bracket (181), an open end of the suction cup (182) is sucked on the wall, an end face of the suction cup (182) opposite to the open end is arranged on the bracket (181), and the vacuum pump (183) is arranged on the bracket (181) and is communicated with the inside of the suction cup (182) through the pipeline (184).