Flat scale capable of being horizontally adjusted for highway overload control

Abstract

The utility model belongs to the technical field of off-site law enforcement equipment for road traffic, and provides a horizontally adjustable flat scale for highway overload control, which has the advantages of high sensitivity of a sensor, accurate measurement, convenience in disassembly and convenience in maintenance and replacement of the sensor. According to the technical scheme, the platform scale comprises a platform scale frame, a scale plate and weighing sensors, the platform scale frame comprises a bottom plate, long side plates, short side plates and sensor bottom cushion plates, the ends of the two short side plates are welded to the two corresponding long side plates in a sealed mode respectively, a rectangular groove body is formed in the bottom plate, and the four corners in the rectangular groove body are each fixedly provided with one sensor bottom cushion plate. The scale plate covers the flat scale frame and forms a box-shaped inner cavity, sensor locking and sealing holes are formed in four corners of the scale plate, pressing and sealing assemblies are fixedly mounted in the sensor locking and sealing holes, a weighing sensor is arranged between each pressing and sealing assembly and the sensor bottom base plate, and the bottom of each weighing sensor is fixedly connected with the sensor bottom base plate. The lower end of the press-sealing assembly abuts against and fixes the top end of the lower weighing sensor.

Description

Technical Field

[0001] The utility model relates to a horizontally adjustable flat scale for highway overloading control, which belongs to the technical field of non-site law enforcement equipment for road traffic, and specifically relates to a horizontally adjustable flat scale for highway overloading control. Background Art

[0002] Dynamic weighing scales for vehicles are divided into flat scales and integral scales. The longitudinal distance of the flat scale platform is short, and the single axle weight needs to be weighed sequentially and then accumulated to obtain the total weight. The integral scale platform can accommodate a whole vehicle longitudinally, and the total weight can be obtained by weighing once. Due to the fact that various types of vehicles pass on highways, including extra-long vehicles such as trailers, and the limitation of space, flat scale platforms are basically used in the non-site law enforcement systems on highways. The advantages of the flat scale are dynamic weighing, short longitudinal distance of the scale platform, small gap between the scale platform and the scale box, compact structure, less occupied site, short construction period, and low cost. However, the currently used flat scale platforms still have the following disadvantages: 1. The strength of the scale platform is not high, it is easy to be damaged, which affects the sensitivity of the sensor, resulting in inaccurate measurement accuracy; 2. Due to the structure of the scale platform, it will occasionally shake during use, which is unstable; 3. Since the original scale platform is fixed by cement pouring, it is inconvenient to disassemble, and the subsequent maintenance cost is high, the maintenance time is long, which affects the normal use of the channel where it is located. Content of the Utility Model

[0003] In order to solve one of the above technical defects, the utility model provides a horizontally adjustable flat scale for highway overloading control, which has high sensitivity of the sensor, accurate measurement, convenient disassembly, and is convenient for the maintenance and replacement of the sensor.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a horizontally adjustable flat scale for highway overloading control, which includes a flat scale frame, a scale plate, and a weighing sensor;

[0005] The flat scale frame includes a bottom plate, long side plates, short side plates, and sensor bottom pads. The bottom plate is a rectangular plate structure. One long side plate is vertically fixed on each side of the bottom plate in the length direction. One short side plate is vertically fixed on each side of the bottom plate in the width direction. The end parts of the two short side plates are respectively hermetically welded to the corresponding two long side plates to form a rectangular groove body on the bottom plate. A sensor bottom pad is fixedly arranged at each of the four corners inside the rectangular groove body, and a plurality of bottom fixing threaded holes are arranged on the sensor bottom pad;

[0006] The scale plate is a rectangular plate structure. Sensor locking holes are arranged at the four corners of the scale plate, and a pressing and sealing component is fixedly installed in the sensor locking holes;

[0007] A plurality of lower connection holes are arranged on the bottom edge of the shell of the weighing sensor;

[0008] The scale plate cover is installed on the flat scale frame and forms a box-shaped inner cavity. The top end of the short side plate is 4-5 cm lower than the top end of the long side plate. Both ends in the width direction of the scale plate are respectively abutted against the inner sides of the top ends of the two long side plates with a gap left. Both ends in the length direction of the scale plate are respectively located directly above the two short side plates with a gap left.

[0009] Four pressure sealing components are respectively arranged directly above the four sensor bottom pads. A weighing sensor is arranged between each pressure sealing component and the sensor bottom pad. The bottom of the weighing sensor is connected and fixed to the sensor bottom pad through a plurality of lower fastening bolts in cooperation with the lower connection holes and the bottom fixing threaded holes. The lower end of the pressure sealing component presses and fixes the top end of the lower weighing sensor.

[0010] The pressure sealing component includes an adjusting bolt, a nut seat, a retaining plate, a limiting steel ball and a cover.

[0011] The nut seat is a convex-shaped ring with a threaded through hole in the center. The adjusting bolt is fixed in the threaded through hole of the nut seat by threads. The lower end of the adjusting bolt abuts against the top end of the weighing sensor. The upper end of the adjusting bolt is provided with a multi-faceted head. The retaining plate is a circular plate. A sleeve hole matching the multi-faceted head is provided in the center of the retaining plate and is sleeved on the multi-faceted head. At least one first half-hole groove is provided on the outer side wall of the retaining plate. At least one second half-hole groove is also provided on the inner wall top of the sensor locking hole. At least one first half-hole groove of the retaining plate is docked with one second half-hole groove of the sensor locking hole to form a complete limiting groove. A limiting steel ball is placed in the limiting groove. The cover is installed on the top of the sensor locking hole and the top surface of the cover is in the same plane as the top surface of the scale plate.

[0012] A limiting column is fixedly arranged at the center of both ends in the length direction of the inner bottom surface of the flat scale frame. The limiting column includes a column body, a connecting head, a limiting sleeve, a gland, a connecting bolt and a limiting pad.

[0013] At the middle bottom of both ends in the length direction of the rectangular groove body of the flat weighing scale frame, a limit backing plate is fixedly arranged respectively. An adjusting stepped hole is arranged on the limit backing plate and the bottom plate below it. The bottom of the column body is fixed on the limit backing plate through a preliminary adjusting bolt. The nut of the preliminary adjusting bolt is located in the large-diameter hole of the adjusting stepped hole, and its stud penetrates through the small-diameter hole of the adjusting stepped hole and is tightly connected with the threaded hole at the bottom of the main body. The diameter of the small-diameter hole of the adjusting stepped hole is larger than the diameter of the stud of the preliminary adjusting bolt and smaller than the diameter of its nut. An integrally formed connecting column head is arranged at the top of the column body. A plurality of cut surfaces are uniformly arranged on the vertical side wall of the connecting column head. A fastening screw hole is vertically arranged at the center of the top of the connecting column head. At the position directly above the limit column on the weighing plate, a stepped connecting hole with a larger upper part and a smaller lower part is arranged. The upper part of the connecting column head extends into the stepped connecting hole, and a limit sleeve is movably sleeved on the upper part of the connecting column head. The limit sleeve is a convex-shaped ring with a through hole in the center. The small-diameter ring of the limit sleeve is fixedly sleeved in the lower hole of the stepped connecting hole, and the shoulder of the large-diameter ring of the limit sleeve is stuck on the bottom surface of the weighing plate. A gap inserting plate is filled between the cut surface of the connecting column head and the inner wall of the through hole of the limit sleeve. A gland is installed in the upper hole of the stepped connecting hole. The center of the gland is provided with a through hole and is movably sleeved on the upper part of the connecting bolt through the through hole. A counterbore for hiding the nut of the connecting bolt is arranged at the center of the top surface of the gland.

[0014] An anti-disengagement locking mechanism is installed on the gland. The anti-disengagement locking mechanism includes a lock piece and a locking screw. A long groove communicated with it is arranged on one side of the counterbore. The lock piece is a rectangular plate and is installed in the long groove. One end of the lock piece is located inside the counterbore and abuts against one side of the nut of the connecting bolt. A fine-adjustment long hole is arranged on the lock piece and a plurality of locking screws are installed. The locking screws are fixedly connected in the long groove through threaded connection.

[0015] A top cap is arranged at the center of the top of the weighing sensor. The top end of the top cap is an arc surface and is in tight contact connection with the lower end of the pressure sealing assembly.

[0016] A support beam group is arranged at the center of the bottom surface of the weighing plate. The support beam group is a grid-like structure formed by a plurality of parallel transverse beam plates and a plurality of parallel longitudinal beam plates fixed on the bottom surface of the weighing plate. The bottom ends of all the transverse beam plates and longitudinal beam plates are fixedly connected through a connecting plate. When the weighing plate is covered on the flat weighing scale frame, a gap is left between the bottom end of the support beam group and the inner bottom surface of the flat weighing scale frame.

[0017] A plurality of drain holes are arranged at the bottom of both short side plates.

[0018] A plurality of connecting ears are arranged at both ends of the outer side surface of both long side plates.

[0019] A plurality of strengthening ground-foot connecting ribs are arranged on the outer side surface of the long side plate.

[0020] Using the horizontally adjustable platform scale for highway overloading control provided by the present utility model, the bottom of the load cell is firmly fixed to the bottom surface of the platform scale frame, and the top is firmly fixed by pressing and sealing components. Its installation structure makes the sensor more sensitive and the measurement more accurate. The pressing and sealing components are detachable. The structure of the entire platform scale is reasonable and the scale plate is easy to disassemble, reducing the maintenance difficulty.

[0021] Other features and advantages of the present utility model will be described in the following specification, and, in part, will become apparent from the specification or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained by the content pointed out in the written specification, claims, and drawings. Brief Description of the Drawings

[0022] The drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0023] Figure 1 is the structural schematic diagram of the present utility model;

[0024] Figure 2 is Figure 1 the A-A cross-sectional structural schematic diagram of ;

[0025] Figure 3 is Figure 1 the side structural schematic diagram of ;

[0026] Figure 4 is the structural schematic diagram of the platform scale frame in the present utility model;

[0027] Figure 5 is the structural schematic diagram of the scale plate in the present utility model;

[0028] Figure 6 is the structural schematic diagram of the load cell in the present utility model;

[0029] Figure 7 is the installation structure schematic diagram of the load cell in the platform scale frame and the load cell in the present utility model;

[0030] Figure 8 is the top view of the installation structure of the anti-recoil plate in the sensor locking hole in the present utility model;

[0031] Figure 9 is the installation structure schematic diagram of the limit post in the platform scale frame and the load cell in the present utility model;

[0032] Figure 10 is the top view of the installation structure of the gland in the stepped connection hole in the present utility model;

[0033] Figure 11 This is a schematic structural view of a gap panel filled between the cut surface of the connecting stigma and the inner wall of the through hole of the limit sleeve in the present utility model. Specific embodiments

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments in the present utility model. Obviously, the described embodiments are some, rather than all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0035] As Figures 1-10 shown, a horizontally adjustable platform scale for highway overloading control in the present utility model includes a platform scale frame 1, a scale plate 2, and a load cell 3;

[0036] As Figure 4 shown, the platform scale frame 1 includes a bottom plate 11, long side plates 12, short side plates 13, and a sensor bottom pad 14. The bottom plate 11 is a rectangular plate structure. One long side plate 12 is vertically fixed to each of the two sides in the length direction of the bottom plate 11. One short side plate 13 is vertically fixed to each of the two sides in the width direction of the bottom plate 11. The ends of the two short side plates 13 are respectively hermetically welded to the corresponding two long side plates 12 to form a rectangular groove on the bottom plate 11. A sensor bottom pad 14 is fixedly provided at each of the four corners inside the rectangular groove. Multiple bottom fixing threaded holes 15 are provided on the sensor bottom pad 14;

[0037] As Figure 5 shown, the scale plate 2 is a rectangular plate structure. Sensor locking holes 21 are provided at the four corners of the scale plate 2. A pressure sealing assembly 22 is fixedly installed in the sensor locking holes 21;

[0038] As Figure 6 shown, multiple lower connection holes 31 are provided at the bottom edge of the housing of the load cell 3;

[0039] As Figures 1-3As shown, the weighing plate 2 is covered on the flat weighing frame 1 to form a box-shaped inner cavity. The top end of the short side plate 13 is 4 - 5 cm lower than the top end of the long side plate 12. Both ends of the weighing plate 2 in the width direction are respectively abutted against the inner sides of the top ends of the two long side plates 12 with gaps left. Both ends of the weighing plate 2 in the length direction are respectively located directly above the two short side plates 13 with gaps left. When the utility model is in use, the width direction of the weighing plate 2 is the vehicle traveling direction. The upper end of the long side plate 12 can limit the shaking of the weighing plate 2 after being subjected to the wheel walking friction force. At the same time, neither the long side plate 12 nor the short side plate 13 will affect the weighing of the vehicle body by the weighing sensor 3.

[0040] Four pressure sealing assemblies 22 are respectively arranged directly above the four sensor bottom pads 14. A weighing sensor 3 is arranged between each pressure sealing assembly 22 and the sensor bottom pad 14. The bottom of the weighing sensor 3 is connected and fixed to the sensor bottom pad 14 through a plurality of lower fastening bolts 33 in cooperation with the lower connection holes 31 and the bottom fixing threaded holes 15. The lower end of the pressure sealing assembly 22 presses and fixes the top end of the lower weighing sensor 3.

[0041] As Figure 7 shown, the pressure sealing assembly 22 includes an adjusting bolt 221, a nut seat 222, a retaining plate 223, a limiting steel ball 224 and a cover 225.

[0042] The nut seat 222 is a convex-shaped ring with a threaded through-hole in the center. The adjusting bolt 221 is fixed in the threaded through-hole of the nut seat 222 by threads. The lower end of the adjusting bolt 221 abuts against the top end of the weighing sensor 3. A multi-faceted head 226 is arranged at the upper end of the adjusting bolt 221. The retaining plate 223 is a circular plate. A sleeve hole matching the multi-faceted head 226 is arranged in the center of the retaining plate 223 and is sleeved on the multi-faceted head 226. When fixing the weighing sensor 3, it is necessary to first fix the nut seat 222 (using an auxiliary tool to prevent it from rotating or directly connecting it to the weighing plate 2), and then operate the multi-faceted head 226 with a tool to make it rotate. Its up and down adjustment is realized by using the threaded through-hole, and the lower end is used to press tightly against the weighing sensor 3. After the adjustment is completed, the retaining plate 223 is covered. As Figure 8 shown, at least one first half-hole groove is arranged on the outer side wall of the retaining plate 223. At least one second half-hole groove is also arranged at the top of the inner wall of the sensor locking hole 21. At least one first half-hole groove of the retaining plate 223 is docked with one second half-hole groove of the sensor locking hole 21 to form a complete limiting groove 227. A limiting steel ball 224 is placed in the limiting groove 227. After the limiting steel ball 224 is placed in the limiting groove 227, the retaining plate 223 cannot rotate. Taking out the limiting steel ball 224 can make the retaining plate 223 rotate again. The cover 225 is covered on the top of the sensor locking hole 21 and the top surface of the cover 225 is in the same plane as the top surface of the weighing plate 2.

[0043] The flat scale frame 1 of the utility model is connected to the scale plate 2 through a compression seal assembly 22. When the weighing sensor 3 needs to be repaired or replaced, the compression seal assembly 22 can be directly removed to remove the entire scale plate 2 for internal repair, which is convenient and time-saving to maintain.

[0044] In actual installation, the cover 225 can also be connected to the polygonal column head 226 below it by bolts, and the stop plate 223, the limiting steel ball 224 and the cover 225 can be radially locked to prevent them from falling off due to vibration caused by the passing of a vehicle.

[0045] A limit column 4 is fixedly arranged at the center of both ends of the inner bottom surface of the flat scale frame 1 in the length direction. Figure 9 As shown, the limiting column 4 includes a column body 41, a connecting column head 42, a limiting sleeve 43, a pressure cover 44, a connecting bolt 45 and a limiting pad 6;

[0046] A limiting pad 6 is fixedly provided on the middle bottom surface of both ends of the rectangular trough in the length direction of the flat scale frame 1, and an adjustment step hole 7 is provided on the limiting pad 6 and the bottom plate 11 below it. The bottom of the column 41 is fixed to the limiting pad 6 by an initial adjustment bolt, and the nut of the initial adjustment bolt is located in the large diameter hole of the adjustment step hole and its stud passes through the small diameter hole of the adjustment step hole and is fastened to the threaded hole at the bottom of the subject 41. The diameter of the small diameter hole of the adjustment step hole 7 is larger than the stud diameter of the initial adjustment bolt and smaller than the nut diameter. An integrally formed connecting column is provided at the top of the column 41 The connecting column head 42 has a plurality of cross-sections evenly arranged on its vertical side walls. A fastening screw hole is vertically arranged at the top center of the connecting column head 42. A step connecting hole 23 with a larger upper portion and a smaller lower portion is arranged at the position just above the limiting column 4 on the scale plate 2. The upper portion of the connecting column head 42 extends into the step connecting hole 23. The upper portion of the connecting column head 42 is movably sleeved with a limiting sleeve 43. The limiting sleeve 43 is a convex-shaped ring with a through hole at the center. The small diameter circle of the limiting sleeve 43 is fixedly sleeved in the lower hole of the step connecting hole 23. The large diameter circle shoulder of the limiting sleeve 43 is clamped on the bottom surface of the scale plate 2. Figure 11 As shown, a gap insert 8 is filled between the cut surface of the connecting column head 42 and the inner wall of the through hole of the limiting sleeve 43, which can lock and fix the connecting column head 42, and a threaded blind hole is designed on the top surface shell of the gap insert so that it can be removed with a small tool when disassembling. A gland 44 is installed in the upper hole of the step connecting hole 23. The center of the gland 44 is provided with a through hole and is movably sleeved on the upper part of the connecting bolt 45 through the through hole. The center of the top surface of the gland 44 is provided with a countersunk hole 46 for hiding the nut of the connecting bolt 45. The existence of the limiting column 4 makes the scale more stable and does not shake during use.

[0047] The installation and adjustment method steps of the limit post 4 are as follows: First, fix the column body 41 on the limit backing plate 6 through the preliminary adjustment bolt. Then, place the weighing plate 2 above the flat weighing frame 1 and adjust the relative positions of each component to make the weighing plate 2 and the flat weighing frame 1 meet the predetermined installation standard. Loosen the preliminary adjustment bolt slightly, and adjust the position of the column body 41 again to make the gap between the side wall of the limit sleeve 43 and the inner wall of the through hole of the limit sleeve 43 uniform. Then, tighten the preliminary adjustment bolt again, remove the weighing plate 2, seal and weld the bottom of the column body 41 on the limit backing plate 6. Finally, install the weighing plate 2, fill the gap with the inlay panel 8, cover the gland 44, and tighten and connect with the connecting bolt 45 in sequence.

[0048] An anti-loosening locking mechanism is installed on the gland 44, as Figure 10 shown. The anti-loosening locking mechanism includes a lock piece 47 and a locking screw 48. One side of the counterbore 46 is provided with a long slot 49 communicated with it. The lock piece 47 is a rectangular plate and is installed in the long slot 49. One end of the lock piece 47 is located inside the counterbore 46 and abuts against one side of the nut of the connecting bolt 45. The lock piece 47 is provided with a fine adjustment long hole and is installed with a plurality of locking screws 48. The locking screws 48 are fixedly connected in the long slot 49 by threaded connection. To prevent the connecting bolt 45 from rotating and falling off due to vibration caused by a vehicle passing by during use, the lock piece 47 can be locked by an instrument to make it abut against one side of the nut of the connecting bolt 45 (the nut is a hexagonal columnar nut with a flat side), and then the position of the lock piece 47 is locked by the locking screw 48, so as to prevent the connecting bolt 45 from rotating and falling off.

[0049] A top cap 32 is arranged at the top center of the weighing sensor 3. The top end of the top cap 32 is an arc surface and is in tight contact connection with the lower end of the pressure sealing assembly 22, changing the surface connection to a point connection, so that it will not be affected by micro-movement during weighing and the weighing is more accurate.

[0050] A support beam group 5 is arranged at the center of the bottom surface of the weighing plate 2. The support beam group 5 is a grid-like structure formed by fixing a plurality of parallel transverse beam plates 51 and a plurality of parallel longitudinal beam plates 52 on the bottom surface of the weighing plate 2. The bottom ends of all the transverse beam plates 51 and the longitudinal beam plates 52 are fixedly connected by a connecting plate 53. When the weighing plate 2 is covered on the flat weighing frame 1, there is a gap between the bottom end of the support beam group 5 and the inner bottom surface of the flat weighing frame 1. The support beam group 5 can effectively enhance the load-bearing strength of the weighing plate 2, and the gap with the inner bottom surface of the flat weighing frame 1 does not affect the weighing of the sensor.

[0051] A plurality of drain holes 16 are arranged at the bottoms of the two short side plates 13.

[0052] Both ends of the outer sides of the two long side plates 12 are provided with a plurality of connecting ears 17, which facilitates the series installation of multiple platform scales. And during the manufacturing and installation process, the ends of the long side plate 12 and the bottom plate 11 located on the same end face in the length direction need to be located on the same plane, so that after multiple platform scales are connected in series through the connecting ears 17, complete docking can be achieved, and external accumulated water cannot penetrate into the scale body.

[0053] Since there is a certain slope designed for the installation road when multiple scale bodies are installed on site, if there is accumulated water inside the scale body located in the upper part, the accumulated water can flow through the connected scale bodies in series through the drain holes 16, and finally reach the lowest scale body and be discharged by the drain pipe.

[0054] The outer side of the long side plate 12 is provided with a plurality of reinforcing ground connection ribs to enhance its adhesion strength with the cast cement during road installation.

[0055] In the present utility model, the platform scale frame 1 and the scale plate 2 are both connected with ground wires.

[0056] In the present utility model, sealing rings are provided between the gland 44 and the cover 225 and the scale plate 2 to prevent water seepage from corroding and damaging the internal parts.

[0057] In the present utility model, there are more than two operation hole grooves on the top surfaces of the limit sleeve 43, the gland 44, the nut seat 222, the anti-back plate 223, and the cover 225. Using a U-shaped tool, with both ends stuck in two operation hole grooves, rotating the U-shaped tool can perform rotational operations on them.

[0058] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0059] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0060] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, an electrical connection, or a connection capable of mutual communication; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0061] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present utility model.

[0062] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A horizontally adjustable flat scale for highway overload control, characterized by: It comprises a flat scale frame (1), a scale plate (2), and a weighing sensor (3); The flat scale frame (1) comprises a bottom plate (11), a long side plate (12), a short side plate (13) and a sensor bottom pad (14); the bottom plate (11) is a rectangular plate-shaped structure; two sides of the bottom plate (11) in the length direction are respectively vertically fixed with a long side plate (12); two sides of the bottom plate (11) in the width direction are respectively vertically fixed with a short side plate (13); the ends of the two short side plates (13) are respectively sealed and welded to the corresponding two long side plates (12) to form a rectangular trough body on the bottom plate (11); the four corners of the rectangular trough body are each fixedly provided with a sensor bottom pad (14); and the sensor bottom pad (14) is provided with a plurality of bottom fixing threaded holes (15); The scale plate (2) is a rectangular plate-shaped structure, and sensor locking holes (21) are provided at the four corners of the scale plate (2), and a pressure sealing component (22) is fixedly installed in the sensor locking hole (21); A plurality of lower connection holes (31) are provided at the bottom edge of the shell of the weighing sensor (3); The weighing plate (2) is covered on the flat weighing frame (1) to form a box-shaped inner cavity, the top of the short side plate (13) is 4-5 cm lower than the top of the long side plate (12), the two ends of the weighing plate (2) in the width direction respectively abut against the inner sides of the tops of the two long side plates (12) with a gap, and the two ends of the weighing plate (2) in the length direction are respectively located directly above the two short side plates (13) with a gap; Four pressure-sealing components (22) are respectively arranged directly above four sensor bottom pads (14); a weighing sensor (3) is arranged between each pressure-sealing component (22) and the sensor bottom pad (14); the bottom of the weighing sensor (3) is connected and fixed to the sensor bottom pad (14) through a plurality of lower fastening bolts (33) in cooperation with the lower connecting holes (31) and the bottom fixing threaded holes (15); the lower end of the pressure-sealing component (22) is pressed against and fixed to the top of the lower weighing sensor (3).

2. A horizontally adjustable flat scale for highway overload control according to claim 1, characterized in that: The pressure seal assembly (22) comprises an adjusting bolt (221), a nut seat (222), a stop plate (223), a limiting steel ball (224) and a sealing cover (225); The nut seat (222) is a convex-shaped ring with a threaded through hole at the center. The adjusting bolt (221) is fixed in the threaded through hole of the nut seat (222) by means of a thread. The lower end of the adjusting bolt (221) is pressed against the top of the weighing sensor (3). The upper end of the adjusting bolt (221) is provided with a polygonal column head (226). The stop plate (223) is a circular plate. The center of the stop plate (223) is provided with a sleeve hole matching the polygonal column head (226) and is sleeved on the polygonal column head (226). The stop plate (223) The outer wall of the sensor sealing hole (21) is provided with at least one first half-hole groove, the inner wall top of the sensor sealing hole (21) is also provided with at least one second half-hole groove, the stop plate (223) has at least one first half-hole groove that is connected with a second half-hole groove of the sensor sealing hole (21) to form a complete limiting groove (227), a limiting steel ball (224) is placed in the limiting groove (227), and the sealing cover (225) is installed on the top of the sensor sealing hole (21), and the top surface of the sealing cover (225) is in the same plane as the top surface of the scale plate (2).

3. A horizontally adjustable flat plate scale for highway overload control according to claim 2, characterized in that: A limiting column (4) is fixedly provided at the center of both ends of the inner bottom surface of the flat scale frame (1) in the length direction, and the limiting column (4) comprises a column body (41), a connecting column head (42), a limiting sleeve (43), a pressure cover (44), a connecting bolt (45) and a limiting pad (6); A limiting pad (6) is fixedly provided on the middle bottom surface of both ends of the rectangular trough in the length direction of the flat scale frame (1), and an adjustment step hole (7) is provided on the limiting pad (6) and the bottom plate (11) below it. The bottom of the column (41) is fixed to the limiting pad (6) by an initial adjustment bolt. The nut of the initial adjustment bolt is located in the large diameter hole of the adjustment step hole and its stud passes through the small diameter hole of the adjustment step hole and is fastened to the threaded hole at the bottom of the column (41). The diameter of the small diameter hole of the adjustment step hole (7) is larger than the stud diameter of the initial adjustment bolt and smaller than the diameter of its nut. An integrally formed connecting column head (42) is provided at the top of the column (41). The vertical side wall of the connecting column head (42) is evenly provided with a plurality of cut surfaces. A fastening screw hole is vertically provided at the center of the top of the connecting column head (42). The scale plate (2) corresponds to the limiting column (4) positively. A stepped connection hole (23) with a larger top and a smaller bottom is provided at the upper position, the upper part of the connecting column head (42) extends into the stepped connection hole (23), the upper part of the connecting column head (42) is movably sleeved with a limiting sleeve (43), the limiting sleeve (43) is a convex-shaped ring with a through hole at the center, the small diameter ring of the limiting sleeve (43) is fixedly sleeved in the lower hole of the stepped connection hole (23), the large diameter ring shoulder of the limiting sleeve (43) is clamped on the bottom surface of the scale plate (2), a gap insert (8) is filled between the cut surface of the connecting column head (42) and the inner wall of the through hole of the limiting sleeve (43), a pressure cover (44) is installed in the upper hole of the stepped connection hole (23), the center of the pressure cover (44) is provided with a through hole and is movably sleeved on the upper part of the connecting bolt (45) through the through hole, and the center of the top surface of the pressure cover (44) is provided with a countersunk hole (46) for hiding the nut of the connecting bolt (45).

4. The horizontally adjustable flat plate scale for highway overload control according to claim 3 is characterized by: The gland (44) is provided with an anti-slip locking mechanism, which includes a locking plate (47) and a locking screw (48). One side of the countersunk hole (46) is provided with a long slot (49) connected thereto. The locking plate (47) is a rectangular plate and is installed in the long slot (49). One end of the locking plate (47) is located inside the countersunk hole (46) and is pressed against one side of a nut of the connecting bolt (45). The locking plate (47) is provided with a fine-tuning long hole and is provided with a plurality of locking screws (48). The locking screws (48) are fastened and fixed in the long slot (49) by threaded connection.

5. The horizontally adjustable flat plate scale for highway overload control according to claim 4, characterized in that: A top cap (32) is arranged at the top centre of the weighing sensor (3); the top end of the top cap (32) is an arc surface and is in tight contact and connection with the lower end of the pressure sealing assembly (22).

6. The horizontally adjustable flat plate scale for highway overload control according to claim 5, characterized in that: A support beam group (5) is arranged at the center of the bottom surface of the scale plate (2). The support beam group (5) is a lattice structure formed by a plurality of parallel transverse beam plates (51) and a plurality of parallel longitudinal beam plates (52) fixed to the bottom surface of the scale plate (2). The bottom ends of all the transverse beam plates (51) and the longitudinal beam plates (52) are fixedly connected by a connecting plate (53). When the scale plate (2) is covered on the flat scale frame (1), a gap is left between the bottom end of the support beam group (5) and the inner bottom surface of the flat scale frame (1).

7. A horizontally adjustable flat plate scale for highway overload control according to any one of claims 1 to 6, characterized in that: The bottoms of the two short side plates (13) are each provided with a plurality of drainage holes (16).

8. A horizontally adjustable flat plate scale for highway overload control according to any one of claims 1 to 6, characterized in that: A plurality of connection ears (17) are provided at both ends of the outer side surfaces of the two long side plates (12).

9. A horizontally adjustable flat plate scale for highway overload control according to any one of claims 1 to 6, characterized in that: The outer side surface of the long side plate (12) is provided with a plurality of reinforcing anchor connection ribs.

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