Maintenance-friendly floor scale and its weighing and maintenance methods

Abstract

The present invention relates to the technical field of floor scales, and in particular to a floor scale that is easy to maintain and a weighing and maintenance method thereof, comprising a weighing platform and a sensor, wherein the weighing platform comprises a frame, four lifting structures, a support plate, a translational, rotational and telescopic structure and two maintenance windows; the support plate is arranged in the top end of the frame and is mounted on the four lifting structures; the translational, rotational and telescopic structure comprises a translational, rotational and telescopic assembly and two bidirectional telescopic structures; the two bidirectional telescopic structures are arranged in parallel in the frame; the bidirectional telescopic structure comprises two movable ends and a middle rod body; a sensor is installed on the movable end; the translational, rotational and telescopic assembly is installed on the bottom of the inner cavity of the frame, and is rotatably connected to the two middle rod bodies respectively, for driving the two bidirectional telescopic structures to perform any combination of parallel rotational motion, synchronous telescopic motion of adjacent ends and horizontal reciprocating motion perpendicular to the extension direction of the frame; the present invention can effectively reduce the difficulty of floor scale maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of floor scales, and in particular to a floor scale that is easy to maintain and a weighing and maintenance method thereof. Background Art

[0002] Floor scales are mostly composed of a weighing platform and multiple sensors; among them, the sensors are mostly fixedly installed to support the weighing platform and accurately weigh the materials on the weighing platform.

[0003] However, due to the professionalism of the initial installation, the vehicle braking during weighing, the vehicle parking position and other factors, the sensor is prone to offset and the weighing accuracy is reduced. In severe cases, the sensor may be damaged. Due to the limitations of the weighing platform, it is difficult to maintain the damaged or offset sensor in time, affecting the weighing efficiency. Summary of the invention

[0004] The object of the present invention is to provide a floor scale that is easy to maintain and a weighing and maintenance method thereof, so as to solve the technical problem in the prior art that the weighing efficiency is affected when the sensor in the floor scale is damaged and repaired.

[0005] A first aspect of the present invention provides a floor scale that is easy to maintain, comprising a weighing platform and a sensor, wherein the weighing platform comprises a frame, four lifting structures, a support plate, a translational rotation and telescopic structure, and two maintenance windows;

[0006] The top of the frame is an open structure;

[0007] The four lifting structures are respectively installed at the four corners of the inner cavity of the frame;

[0008] The support plate is arranged in the top of the frame and is mounted on the four lifting structures;

[0009] The translational rotational telescopic structure comprises a translational rotational telescopic assembly and two bidirectional telescopic structures;

[0010] The two bidirectional telescopic structures are arranged in parallel in the frame;

[0011] The bidirectional telescopic structure 1 comprises two movable ends and a middle rod body; a sensor is installed on the movable end, and at least one sensor is installed on the middle rod body;

[0012] The translational rotation telescopic assembly is installed on the bottom of the inner cavity of the frame and is rotationally connected to the two middle rods respectively, and is used to drive the two bidirectional telescopic structures to perform any combination of parallel rotational motion, synchronous telescopic motion of adjacent ends, and horizontal reciprocating motion perpendicular to the extension direction of the frame;

[0013] The two maintenance windows are both arranged on the frame body, and are used to allow the adjacent two-way telescopic structure to move out of the inner cavity of the frame body;

[0014] When the four lifting structures descend to the limit position, the support plates are erected on all the sensors.

[0015] Further, the translation and rotation telescopic assembly includes a middle crossbar, a two-way telescopic structure 2, a two-way telescopic structure 3, a linear drive structure 1, a linear drive structure 2 and two linear drive structures 3;

[0016] The middle cross bar is arranged on the bottom of the inner cavity of the frame, and its extension direction is perpendicular to the extension direction of the frame, and its two ends are rotatably connected to the middle parts of the two middle rod bodies respectively;

[0017] The adjacent ends of the two middle rod bodies are respectively connected via a two-way telescopic structure 2;

[0018] The two ends of the two-way telescopic structure 2 are respectively hinged to the corresponding middle rod body;

[0019] The adjacent movable ends of the two bidirectional telescopic structures 1 are connected via a bidirectional telescopic structure 3;

[0020] The two ends of the two-way telescopic structure three are hinged to the corresponding movable ends;

[0021] The fixed end of the linear drive structure 1 is connected to the bottom of the inner cavity of the frame, and the movable end is connected to the middle cross bar, so as to drive the middle cross bar to move linearly back and forth in its extension direction;

[0022] One end of the second linear drive structure is hinged to the middle cross bar, and the other end is hinged to one of the middle rod bodies;

[0023] The adjacent two-way telescopic structure 2 and two-way telescopic structure 3 are connected via a linear drive structure 3;

[0024] The two ends of the linear drive structure three are respectively hinged to the middle part of the corresponding two-way telescopic structure two and the middle part of the two-way telescopic structure three.

[0025] Furthermore, the bottom end of the middle cross bar is arranged in a slide groove, and the slide groove is arranged on the bottom of the inner cavity of the frame.

[0026] Further, the middle crossbar includes an upper crossbar, a lower crossbar and a guide reset structure;

[0027] The upper cross bar is connected to the lower cross bar arranged below it through a guide reset structure;

[0028] When the lifting structure is in the upward limit position, the top of the sensor is in a suspended state;

[0029] When the lifting structure is in the downward limit position, the top and bottom of the sensor are respectively in contact with the bottom of the support plate and the bottom of the inner cavity of the frame;

[0030] In any state, the lower end of the upper cross bar is arranged in the slide groove.

[0031] Further, it also includes a cleaning structure;

[0032] The cleaning structure includes a scraper and two transmission groups;

[0033] The scraper is arranged on an outer edge of the top of the frame and is parallel to the extension direction of the frame;

[0034] The transmission group includes a rack, a transmission gear, a transmission rod, a driving member, a limit bar, a driven gear, a transmission member, a screw, a bevel gear, a mounting groove and a transmission chain;

[0035] Two racks are symmetrically mounted on the bidirectional telescopic structure away from the scraper at its center;

[0036] One end of the rack is connected to the adjacent movable end of the corresponding two-way telescopic structure, and the other end is slidably connected to the corresponding middle rod body;

[0037] The transmission rod and the transmission member are both rotatably connected to the frame;

[0038] The limit bar is installed on the bottom end of the transmission rod and forms a whole B with the transmission rod;

[0039] The transmission gear is sleeved on the whole body B and can only slide up and down relative to the whole body B;

[0040] The driving member is mounted on the frame (2) and is used to drive the transmission gear (704) to slide up and down relative to the whole B;

[0041] When the driving member is working, the transmission gear moves downward and meshes with the rack in the same transmission group and in the target state;

[0042] When the driving member is not working, the return spring pulls the transmission gear to the upper limit position, and the transmission gear does not contact the translational rotation telescopic structure in any state;

[0043] The driven gear is fixedly mounted on the top end of the transmission rod;

[0044] The two mounting grooves are arranged at two ends of the frame in the extending direction, and the extending direction is perpendicular to the scraper;

[0045] The screw is rotatably mounted in the mounting groove, and a bevel gear is mounted on one end of the screw;

[0046] The bevel gear is meshed with the first end of the transmission member;

[0047] The transmission chain is sleeved on the whole formed by the second end of the transmission member and the driven gear;

[0048] The two ends of the scraper are respectively sleeved on the two screw rods.

[0049] Furthermore, a long strip-shaped notch is provided on the side wall of the installation groove away from the center of the frame, a follower block is provided in the installation groove, and the follower block is sleeved on the corresponding screw rod; the end of the follower block away from the center direction of the frame is connected to the scraper.

[0050] Furthermore, it also includes:

[0051] An information acquisition structure, used to acquire the posture information of the vehicle relative to the support plate;

[0052] The control structure is respectively connected with the lifting structure, the information acquisition structure, the sensor, the translation and rotation telescopic assembly and the driving member, and is used to control the operation of the equipment.

[0053] A second aspect of the present invention further provides a weighing and maintenance method for the above-mentioned easy-to-maintain floor scale, the method comprising:

[0054] Acquire the posture information of a vehicle that enters the rectangular measurement area on the top of the support plate and stops steadily; wherein, before the vehicle enters the support plate, the top of the support plate is coplanar with the top of the frame, and the posture information includes a virtual rectangle formed by all wheels of the vehicle and the centroid of the virtual rectangle; wherein, the centroid of the rectangular measurement area and the centroid of the support plate are on the same vertical line, and one side of the rectangular measurement area is parallel to the adjacent side of the support plate;

[0055] According to the acquired posture information, the translation, rotation and telescopic components are controlled to make the sensors on the four movable ends form a virtual quadrilateral, and the centroid of the virtual quadrilateral coincides with the centroid of the virtual rectangle;

[0056] Control the four lifting structures to move downward until the support plates are supported by all sensors, and obtain the weighing data of the sensors.

[0057] Further, the weighing and maintenance method also includes:

[0058] Control the four lifting structures to move upward after the vehicle leaves the support plate, so that the top of the support plate fits the bottom of the scraper;

[0059] Control the translation and rotation telescopic components to make the two bidirectional telescopic structures 1 in a cleaning state; wherein, in the cleaning state, the bidirectional telescopic structure 1 is parallel to the extension direction of the frame, and the two movable ends thereof are farthest apart, and the transmission gear meshes with the corresponding rack when it moves downward to the limit position;

[0060] Control the two driving parts to work, so that the two transmission gears move downward to the limit position;

[0061] Control the translation and rotation telescopic assembly to make the two movable ends corresponding to the two racks move relatively close to each other, so that the scraper moves from one side of the top of the support plate to the other side to perform cleaning operations;

[0062] The translation, rotation and telescopic components are controlled to make the two movable ends corresponding to the two racks move away from each other, and after the scraper is reset, the driving part is placed in a non-working state, and the transmission gear is reset upward to complete the cleaning.

[0063] Further, the weighing and maintenance method also includes:

[0064] Control the translation and rotation telescopic components to make the two bidirectional telescopic structures parallel to the extension direction of the frame;

[0065] The movement of the translation and rotation telescopic components is controlled so that any two-way telescopic structure can be moved out of the frame through the adjacent maintenance window for maintenance.

[0066] Beneficial effects of the present invention:

[0067] By setting up a translation and rotation telescopic component, it can drive the two-way telescopic structure on which the sensor is installed to perform any combination of parallel rotation movement, synchronous telescopic movement of adjacent ends and horizontal reciprocating movement perpendicular to the extension direction of the frame, so that the sensor can effectively move out of the frame through the adjacent maintenance window, so that the sensor can be quickly maintained, avoiding the disadvantages that exist when the weighing platform and the sensor installation position are fixed; with the help of the lifting structure and the support plate, the triggering time of the sensor is effectively reduced, and it is only triggered for weighing when weighing is needed, which helps to increase the service life of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 The overall structure of a floor scale that is easy to maintain is shown in the embodiment. Figure 1 .

[0069] Figure 2 The overall structure of a floor scale that is easy to maintain is shown in the embodiment. Figure 2 , the scale shown in the figure has the support plate, the maintenance plate on the front side and the two cover plates removed.

[0070] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0071] Figure 4 A schematic diagram of the internal structure of the frame.

[0072] Figure 5 It is a schematic diagram of the connection relationship between the upper cross bar, the lower cross bar and the guide reset structure.

[0073] Figure 6This is a schematic diagram of the connection relationship between the information acquisition structure and the control structure.

[0074] Figure 7 for Figure 3 A partial enlarged view of point B in the middle.

[0075] Figure 8 for Figure 3 A partial enlarged view of point C in the middle.

[0076] In the figure:

[0077] 1. Sensor;

[0078] 2. Frame; 201. Maintenance window; 202. Rectangular maintenance opening; 203. Maintenance plate; 204. Installation slot; 205. Maintenance slot; 206. Cover plate; 207. Long strip-shaped notch;

[0079] 3. Lifting structure;

[0080] 4. support plate; 401. rectangular measuring area;

[0081] 501, translation and rotation telescopic assembly; 502, middle cross bar; 5021, slideway; 5022, upper cross bar; 5023, lower cross bar; 5024, guide reset structure;

[0082] 503, two-way telescopic structure 2; 504, two-way telescopic structure 3; 505, linear drive structure 1; 506, linear drive structure 2; 507, linear drive structure 3;

[0083] 508, two-way telescopic structure 1; 5081, middle rod body; 5082, movable end; 5083, guide groove;

[0084] 6. Cleaning structure; 601. Scraper; 6011. Follower block;

[0085] 701, transmission group; 702, rack; 703, transmission chain; 704, transmission gear; 705, transmission rod; 706, return spring; 707, magnet block; 708, electromagnet; 709, limit bar; 710, driven gear; 711, transmission member; 712, screw; 713, bevel gear;

[0086] 8. Information acquisition structure;

[0087] 9. Control structure. DETAILED DESCRIPTION

[0088] The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that it is easy for a person with ordinary skills in the prior art to implement these embodiments; however, the present invention can also be implemented in various different forms, so the present invention is not limited to the embodiments described below; in addition, in order to more clearly describe the present invention, parts that are not connected to the present invention will be omitted from the accompanying drawings.

[0089] In order to solve the problem in the existing floor scale that the weighing platform and the sensor 1 are fixed in position, resulting in the sensor 1 being easily damaged and difficult to maintain in time due to factors such as vehicle braking, thus affecting the weighing efficiency, the present application provides a floor scale that is easy to maintain to solve the above technical problem.

[0090] In order to facilitate a clear understanding of the technical solution of the present application, the present application will be described in detail below in conjunction with specific embodiments and the accompanying drawings of the specification.

[0091] Example

[0092] Combined with Figure 1-8 The present embodiment provides a floor scale that is easy to maintain, which comprises a weighing platform and a plurality of sensors 1; wherein the weighing platform comprises a frame 2, four lifting structures 3, a support plate 4, a translational rotation and telescopic structure and two maintenance windows 201.

[0093] Reference Figure 2 The frame 2 is in the shape of a cuboid with an open top and a rectangular cross section. A maintenance window 201 is provided on both vertical walls in the extension direction. The maintenance window 201 includes a rectangular maintenance opening 202 opened on the side wall of the frame 2 and a maintenance plate 203 installed on the outer wall of the frame 2 for closing the corresponding rectangular maintenance opening 202; the maintenance window 201 is used to maintain the sensor 1, the translational rotation and telescopic structure, etc.

[0094] The support plate 4 is arranged inside the top of the frame 2 and is also in the shape of a cuboid. Its vertical wall fits with the inner wall of the top of the frame 2 to prevent relative shaking, so that it can only move up and down relative to the inner wall of the top of the frame 2.

[0095] The four lifting structures 3 are respectively installed at the four corners of the inner cavity of the frame 2, and the top and bottom are coplanar. At the same time, the top of each lifting structure 3 is in contact with the bottom of the support plate 4 to drive the support plate 4 to move up and down under the limit of the inner wall of the top end of the frame 2.

[0096] In order to protect the sensor 1, multiple sensors 1 are evenly installed on the translation-rotation-telescopic structure; wherein the translation-rotation-telescopic structure comprises a translation-rotation-telescopic assembly 501 and two bidirectional telescopic structures 508.

[0097] like Figure 2The two bidirectional telescopic structures 508 are specifically structures whose two ends can be telescoped separately, and include a middle rod body 5081 and two movable ends 5082. The two movable ends 5082 can move closer to and away from the middle rod body 5081 respectively.

[0098] The two bidirectional telescopic structures 508 are arranged in parallel, and their extension directions are initially aligned with the extension direction of the frame 2. Secondly, the middle parts of the two middle rods 5081 are rotationally connected to the two ends of the translational rotation telescopic assembly 501, and the translational rotation telescopic assembly 501 is installed on the bottom of the inner cavity of the frame 2.

[0099] The multiple sensors 1 are evenly divided into two groups and correspond to the two bidirectional telescopic structures 508. Among them, each movable end 5082 is equipped with a sensor 1, and the installation positions of the two sensors 1 on the same bidirectional telescopic structure 508 are symmetrically arranged about the center of the bidirectional telescopic structure 508, and each middle rod body 5081 is equipped with one or more sensors 1; among them, when one sensor 1 is installed on the middle rod body 5081, the installation position is its center, when multiple sensors are installed and the number is an odd number, one sensor is installed at the center of the middle rod body 5081, and the others are symmetrically installed and evenly distributed about the center of the middle rod body 5081, when multiple sensors are installed and the number is an even number, they are evenly installed on the middle rod body 5081, and the distances between adjacent sensors 1 are equal; in this embodiment, two sensors 1 are installed on the middle rod body 5081, and are respectively located at the two ends of the middle rod body 5081.

[0100] In this embodiment, the translation and rotation telescopic assembly 501 is used to drive the two bidirectional telescopic structures 508 to perform any combination of parallel rotation movement, synchronous telescopic movement of adjacent ends, and horizontal displacement movement perpendicular to the extension direction of the frame 2; wherein:

[0101] Parallel rotational motion means that the translational rotation telescopic assembly 501 drives the two bidirectional telescopic structures 508 to rotate simultaneously, and the two bidirectional telescopic structures 508 always remain parallel during the rotation process;

[0102] The synchronous telescopic movement of adjacent ends means that the translation and rotation telescopic assembly 501 drives the adjacent active ends 5082 in the two bidirectional telescopic structures 508 to perform synchronous telescopic movement, for example, Figure 2 In the embodiment, the two movable ends 5082 on the left and / or right sides of the two bidirectional telescopic structures 508 move toward or away from the corresponding middle rod 5081 synchronously; that is, the movable ends 5082 of the two adjacent and separately located bidirectional telescopic structures 508 move toward or away from the corresponding middle rod 5081 synchronously, and Figure 2In the embodiment, the two adjacent movable ends 5082 on the left can move toward or away from the middle rod body 5081 together with the two adjacent movable ends 5082 on the right or separately.

[0103] The horizontal displacement movement perpendicular to the extension direction of the frame 2 means that the two bidirectional telescopic structures 508 are regarded as a whole, and the translation and rotation telescopic assembly 501 drives the whole to perform linear reciprocating motion in the direction perpendicular to the extension direction of the frame 2; for example, Figure 2 Perform the movement in the middle front or back.

[0104] The translation and rotation telescopic assembly 501 can drive the two bidirectional telescopic structures 508 to perform any one of the above three activities, or any combination of movements.

[0105] During the above movement, the bidirectional telescopic structure 1 508 can be moved out of the frame 2 through the adjacent maintenance window 201, and then relevant maintenance operations can be performed.

[0106] In order to protect the sensor 1 during the movement process and the non-weighing state, in the present embodiment, when weighing is not performed, the four lifting structures 3 are in the upward limit position. At this time, the top of the support plate 4 is coplanar with the top of the frame 2 to ensure the passage of vehicles. At this time, all sensors 1 are not in contact with the support plate 4, so that they will not be triggered to work, thereby avoiding the influence of unstable states (vehicle braking, not stopping, etc.) on the sensor 1, which helps to increase the service life of the sensor 1.

[0107] When the sensor 1 needs maintenance, the translation and rotation telescopic assembly 501 can be used to drive the bidirectional telescopic structure 508 to move out of the inner cavity of the frame 2 through the adjacent and opened maintenance window 201, so that it is exposed to the external space, and then the sensor 1 and the bidirectional telescopic structure 508 can be maintained.

[0108] When the above structure is used for weighing, the vehicle is first driven into the rectangular measuring area 401 drawn on the top of the support plate 4. After the vehicle stops, the translation, rotation and telescopic assembly 501 is operated to make the centroid of the virtual quadrilateral surrounded by the four sensors 1 on the four movable ends 5082 coincide with the centroid of the virtual rectangle surrounded by all the wheels in the vehicle. After the adjustment is completed, the translation, rotation and telescopic assembly 501 is no longer operated, and then the four lifting structures 3 are moved down to the support plate 4 and erected on the whole formed by all the sensors 1 for weighing.

[0109] After the weighing is completed, the four lifting structures 3 move to make the support plate 4 move up to be coplanar with the top of the frame 2, and the translation and rotation telescopic component 501 maintains the current position unchanged, and adjusts the position again while waiting for the subsequent weighing to reduce energy consumption; it can also be restored to the initial state. At this time, both ends of the two bidirectional telescopic structures 508 are extended to the longest state and are parallel to the extension direction of the frame 2. At this time, the centroid of the virtual quadrilateral formed by the four sensors 1 on the four active ends 5082 is on the same vertical line as the centroid of the support plate 4 and the centroid of the rectangular measuring area 401.

[0110] Secondly, during the weighing process, the two-way telescopic structure 508 can be made parallel to the extension direction of the vehicle before weighing. This can avoid the defect of excessive pressure on some sensors 1 when only the centroids coincide, so that the vehicle pressure can be evenly distributed on each sensor 1; wherein, the two-way telescopic structure 508 is made parallel to the extension direction of the vehicle before weighing, including the situation where the virtual quadrilateral is inside, outside or partially overlapped with the virtual rectangle, among which the virtual quadrilateral being outside the virtual rectangle is the priority control strategy, which helps to reduce the overall energy consumption of the equipment, and the control priorities corresponding to the situations where the virtual quadrilateral is inside the virtual rectangle and partially overlaps are reduced in turn.

[0111] That is, the easy-to-maintain floor scale provided in this embodiment is not only convenient for maintaining each sensor 1, but also convenient for accurate weighing.

[0112] Among them, the centroid of the rectangular measuring area 401, the centroid of the top of the frame 2, and the centroid of the support plate 4 are all on the same vertical line, and the distance between each side in the rectangular measuring area 401 and the adjacent side in the top of the frame 2 is fixed and greater than zero, which is convenient for subsequent weighing.

[0113] In order to facilitate the realization of the functions of the above-mentioned translation and rotation telescopic assembly 501, in this embodiment, the translation and rotation telescopic assembly 501 includes a middle cross bar 502, a two-way telescopic structure 2 503, a two-way telescopic structure 3 504, a linear drive structure 1 505, a linear drive structure 2 506 and two linear drive structures 3 507.

[0114] like Figure 2 The middle cross bar 502 is arranged on the bottom of the inner cavity of the frame 2, and its extension direction is perpendicular to the extension direction of the frame 2, and its two ends are rotatably connected to the middle parts of the two middle rod bodies 5081 respectively.

[0115] In order to drive the middle cross bar 502 to reciprocate in a direction perpendicular to the extension direction of the frame 2 , in this embodiment, the fixed end of the linear drive structure 1 505 is connected to the bottom of the inner cavity of the frame 2 , and the movable end 5082 is connected to the middle cross bar 502 .

[0116] That is, during the linear reciprocating motion of the action end of the linear drive structure 1 505, the two middle rods 5081 will be driven to reciprocate in a direction perpendicular to the extension direction of the frame 2 through the middle cross bar 502, thereby realizing the aforementioned horizontal displacement motion perpendicular to the extension direction of the frame 2.

[0117] Secondly, the adjacent ends of the two middle rod bodies 5081 are connected by a two-way telescopic structure 503, and the two ends of the two-way telescopic structure 503 are hinged to the corresponding middle rod bodies 5081. The two-way telescopic structure 503 is used to keep the two middle rod bodies 5081 always linked and parallel to each other during the aforementioned various movements.

[0118] Secondly, in order to maintain the synchronous movement between the adjacent active ends 5082 in the two bidirectional telescopic structures 1 508, in this embodiment, the adjacent active ends 5082 in the two bidirectional telescopic structures 1 508 are also connected through the bidirectional telescopic structure 3 504, and the two ends of the bidirectional telescopic structure 3 504 are hinged to the corresponding active ends 5082.

[0119] In order to enable the movable ends 5082 on two adjacent two-way telescopic structures 1 508 to perform synchronous telescopic movement, in this embodiment, the adjacent two-way telescopic structure 2 503 and two-way telescopic structure 3 504 are also connected through a linear drive structure 3 507; wherein the two ends of the linear drive structure 3 507 are respectively hinged to the middle part of the corresponding two-way telescopic structure 2 503 and the middle part of the two-way telescopic structure 3 504.

[0120] Because the two ends of the two-way telescopic structure 2 503 are connected to two middle rods 5081 (no telescoping in the extension direction will occur), during the telescopic movement of the linear drive structure 3 507, the corresponding two movable ends 5082 will be driven to telescoping movement via the corresponding two-way telescopic structure 3 504, thereby realizing the synchronous telescoping movement of the adjacent ends mentioned above.

[0121] In order to realize the aforementioned parallel rotational motion, in this embodiment, one end of the second linear drive structure 506 is hinged to the middle cross bar 502 , and the other end is hinged to one of the middle rod bodies 5081 .

[0122] Then, during the telescopic movement of the second linear drive structure 506, the middle rod body 5081 connected thereto will rotate around the axis, and then through the second bidirectional telescopic structure 503, the two bidirectional telescopic structures 1 508 will be linked to achieve the aforementioned parallel rotation movement.

[0123] Through the above arrangement, the aforementioned various movements can be effectively realized; at the same time, when equipment maintenance is required, the linear drive structure 505 is activated to drive the middle cross bar 502, so that the two-way telescopic structure 508 can be moved out of the frame 2 through the adjacent and opened maintenance window 201; at this time, the two-way telescopic structure 508 is preferably parallel to the extension direction of the frame 2.

[0124] In order to ensure the stability of the reciprocating motion perpendicular to the extension direction of the frame 2, in this embodiment, the bottom end of the middle cross bar 502 is also arranged in a slide groove 5021, and the slide groove 5021 is arranged on the bottom of the inner cavity of the frame 2 for guiding and limiting the middle cross bar 502.

[0125] That is, the middle cross bar 502 can be effectively guided and limited by means of the slide groove 5021, so as to ensure the stability of the movement.

[0126] In order to further protect the sensor 1, etc., in this embodiment, the middle cross bar 502 also includes an upper cross bar 5022, a lower cross bar 5023 and a guide reset structure 5024; wherein the upper cross bar 5022 is connected to the lower cross bar 5023 disposed thereunder through the guide reset structure 5024; wherein the guide reset structure 5024 meets the following requirements:

[0127] When the lifting structure 3 is at the upper limit position, the guide reset structure 5024 makes the top and bottom of the sensor 1 suspended;

[0128] When the lifting structure 3 is at the downward limit position, the top and bottom of all sensors 1 are respectively in contact with the bottom of the support plate 4 and the bottom of the inner cavity of the frame 2, and are used for weighing;

[0129] In any state, the lower end of the upper cross bar 5022 , the guide reset structure 5024 and the lower cross bar 5023 are all arranged in the slide groove 5021 .

[0130] Among them, the lower cross bar 5023 is connected to the linear driving structure 1 505, and the linear driving structure 1 505 drives the two bidirectional telescopic structures 1 508 to perform the aforementioned movement through the lower cross bar 5023, the guide reset structure 5024 and the upper cross bar 5022.

[0131] In order to make full use of the movement characteristics of the equipment and to prevent the debris falling on the support plate 4 after weighing from affecting the subsequent weighing results, in this embodiment, a cleaning structure 6 is also provided to clean the debris on the support plate 4.

[0132] like Figure 1 , 2 and 4, the cleaning structure 6 includes a scraper 601 and two transmission groups 701;

[0133] The scraper 601 is disposed on an outer edge of the top of the frame 2 and is parallel to the extension direction of the frame 2 . When the support plate 4 is at the upper limit position, the scraper 601 fits against the support plate 4 to scrape off debris on the support plate 4 .

[0134] The transmission group 701 includes a rack 702, a transmission gear 704, a transmission rod 705, a transmission member, a limit bar 709, a driven gear 710, a transmission member 711, a screw 712, a bevel gear 713, a mounting groove 204 and a transmission chain 703, which is used to drive the scraper 601 to perform a scraping action.

[0135] Reference Figure 1 The scraper 601 is provided with a top rear side of the frame 2, and the two-way telescopic structure 508 (which is away from the scraper 601) Figure 2 Two racks 702 are symmetrically installed on the two-way telescopic structure 508 on the front middle side about its center; one end of the two racks 702 is connected to the adjacent movable end 5082 in the corresponding two-way telescopic structure 508, and the other end is slidably connected to the corresponding middle rod body 5081.

[0136] In this embodiment, a guide block is installed on the end of the rack 702 adjacent to the middle rod body 5081, and the guide block is arranged in a guide groove 5083 opened on the middle rod body 5081. The guide groove 5083 is used to limit and guide the guide block, so that the rack 702 can keep its motion trajectory in the same vertical plane during the reciprocating motion of the corresponding linear drive structure 3 507.

[0137] Through the above-mentioned arrangement, when performing a cleaning action, the two linear drive structures three 507 move synchronously, so that the two movable ends 5082 on the left and the two movable ends 5082 on the right move synchronously toward the middle cross bar 502 or move synchronously away from the middle cross bar 502, thereby driving the two racks 702 to move synchronously; wherein, before the rack 702 moves, the two movable ends 5082 are the farthest apart, and the movement rhythm of the two linear drive structures three 507 is the same in the later stage, so that the two racks 702 can move synchronously, and the distance between them and the corresponding middle cross bar 5081 is always kept consistent, thereby realizing the scraping action of the scraper 601 in the later stage.

[0138] refer to Figure 7 In order to drive the scraper 601 to move, in this embodiment, the transmission rod 705 is rotatably connected to the frame 2, and a limit bar 709 is fixedly installed at its bottom end. The limit bar 709 and the transmission rod 705 are an integrated structure and form a whole B, and the transmission gear 704 is sleeved on the whole B and can only slide up and down relative to the whole B; the driving member is used to drive the transmission gear 704 to slide up and down on the whole B.

[0139] in:

[0140] When the driving member is working, the transmission gear 704 moves downward, and the transmission gear 704 meshes with the corresponding rack 702. At this time, the two-way telescopic structure 508 where the rack 702 is located is in the target state; wherein, the two-way telescopic structure 508 in the target state is parallel to the frame 2, and the two movable ends 5082 thereon are the farthest apart, and at the same time, the rack 702 on the two-way telescopic structure 508 is below the corresponding transmission gear 704, and the transmission gear 704 meshes with the corresponding rack 702 when it moves downward to the extreme position.

[0141] When the driving member is not working, no matter what kind of movement the translation-rotation-telescopic assembly 501 performs, the transmission gear 704 will not contact the translation-rotation-telescopic structure, thereby avoiding affecting the normal weighing operation of the equipment.

[0142] In this embodiment, the transmission member is specifically composed of a reset spring 706, a magnet block 707 and an electromagnet 708. The reset spring 706 is sleeved on the transmission rod 705, the top of the reset spring 706 is connected to the frame 2, and the bottom is connected to the magnet block 707, and the reset spring 706 is in a contracted state under normal conditions; the magnet block 707 is fixedly connected to the transmission gear 704, and the magnet block 707 and the transmission gear 704 form a whole A; the limit bar 709 is installed on the bottom end of the transmission rod 705, and is an integral structure with the transmission rod 705, and forms a whole B.

[0143] The whole A is mounted on the whole B and can only slide up and down relative to the whole B; and the electromagnet 708 is installed on the frame 2 to enable the transmission gear 704 to move downward when needed.

[0144] in:

[0145] When the electromagnet 708 is working, a magnetic field is generated, and the magnetic field repels the magnetic field of the magnet block 707 itself, thereby repelling the magnet block 707, causing the transmission gear 704 to move downward, causing the transmission gear 704 to mesh with the corresponding rack 702. At this time, the two-way telescopic structure 508 where the rack 702 is located is in a target state, and the reset spring 706 is in a stretched state; wherein, the two-way telescopic structure 508 in the target state is parallel to the frame 2, and the two movable ends 5082 thereon are the farthest apart, and at the same time, the rack 702 on the two-way telescopic structure 508 is below the corresponding transmission gear 704, and the transmission gear 704 meshes with the corresponding rack 702 when it moves downward to the extreme position.

[0146] When the electromagnet 708 is not working, the reset spring 706 pulls the transmission gear 704 upward to the upward limit position through the magnet block 707. At this time, no matter what movement the translational rotation and telescopic assembly 501 performs, the transmission gear 704 will not contact the translational rotation and telescopic structure, thereby avoiding affecting the normal weighing operation of the equipment.

[0147] In order to realize the scraping action of the scraper 601, in this embodiment, two installation grooves 204 are provided at both ends of the frame 2 in the extension direction, and the extension direction is perpendicular to the scraper 601; and a transmission member 711 is rotatably installed in the end of the installation groove 204 adjacent to the corresponding rack 702; at the same time, a screw rod 712 is rotatably installed in the corresponding installation groove 204, and a bevel gear 713 is installed on one end thereof (refer to Figure 8 ); wherein the bevel gear 713 is meshed with the first end of the transmission member 711, and the transmission chain 703 is sleeved on the second end of the transmission member 711 and the driven gear 710, the driven gear 710 is fixedly mounted on the top of the transmission rod 705, and the two ends of the scraper 601 are respectively sleeved on the two screw rods 712 and threadedly connected.

[0148] That is, when the rack 702 is driven by the linear drive structure 3507 to perform reciprocating motion, the transmission gear 704 meshing with it will rotate, and the transmission gear 704 that is rotating will drive the transmission rod 705 to rotate with the help of the limit bar 709, and the rotating transmission rod 705 will drive the driven gear 710 at its top to rotate, and the driven gear 710 will drive the transmission member 711 to rotate via the transmission chain 703, and the transmission member 711 will drive the screw 712 to rotate via the bevel gear 713.

[0149] Then, the two rotating screws 712 will drive the two ends of the scraper 601 to move synchronously (along the extension direction of the screw 712, that is, perpendicular to the extension direction of the frame 2), and the two ends of the scraper 601 will drive its main body to move on the support plate 4 toward the two-way telescopic structure 508 equipped with the rack 702. In this process, the debris on the top of the support plate 4 can be scraped off, thereby achieving the scraping purpose.

[0150] like Figure 3 and 4 In order to facilitate the maintenance of the transmission chain 703, etc., in this embodiment, a maintenance groove 205 is also provided on the top of the frame 2; wherein, the driven gear 710 and the transmission chain 703 are both arranged in the maintenance groove 205, and the maintenance groove 205 is connected to the adjacent end of the installation groove 204, and the whole formed by the two is provided with a cover plate 206 for closing the top of the two, and the cover plate 206 can be removed later to maintain the structure inside the two.

[0151] In order to facilitate transmission, in this embodiment, a long strip-shaped notch 207 is provided on the side wall of the installation groove 204 that is away from the center of the frame 2, and a driven block 6011 is provided in the installation groove 204. The driven block 6011 is sleeved on the corresponding screw rod 712 and threadedly connected thereto, and the end of the driven block 6011 that is away from the center direction of the frame 2 is connected to the scraper 601.

[0152] That is, by means of the setting of the cover plate 206 and the long strip-shaped notch 207, it is convenient to drive the scraper 601 on the one hand, and to maintain the equipment on the other hand, and at the same time, it can prevent debris from entering the installation groove 204 through the top thereof.

[0153] In order to further improve the weighing efficiency and accuracy, in this embodiment, it also includes:

[0154] The information acquisition structure 8 is used to acquire the posture information of the vehicle relative to the support plate 4; it can be composed of multiple cameras, etc., and it only needs to be able to acquire the position information of all vehicles relative to the support plate 4.

[0155] refer to Figure 6 The control structure 9 is respectively connected with each lifting structure 3, the information acquisition structure 8, each sensor 1, the translation and rotation telescopic assembly 501 (corresponding to the linear drive structure 1 505, the linear drive structure 2 506 and the linear drive structure 3 507) and the driving member (electromagnet 708) to control the operation of the equipment.

[0156] That is, the posture information of the vehicle is quickly acquired with the help of the information acquisition structure 8, and the device is controlled according to the posture information with the help of the control structure 9 to achieve accurate weighing.

[0157] Based on the above structure, this embodiment also provides a weighing method based on the above-mentioned easy-to-maintain floor scale, which mainly includes:

[0158] S1. Weighing steps:

[0159] Before weighing, the four lifting structures 3 are at the upper limit position, and the top of the support plate 4 is coplanar with the top of the frame 2, so that the vehicle can drive into the rectangular measuring area 401 on the support plate 4. At this time, the sensor 1 does not work and is not triggered, which helps to increase its service life.

[0160] Then, after the vehicle enters the rectangular measurement area 401 on the top of the support plate 4 and stops steadily (in order to facilitate the vehicle to enter the support plate 4, slope protection is also provided on both sides of the frame 1), the information acquisition structure 8 obtains the posture information of the vehicle relative to the support plate 4; wherein the posture information includes the virtual rectangle formed by all wheels in the vehicle and the centroid of the virtual rectangle; wherein the centroid refers to the intersection of the two diagonals in the virtual rectangle; and in order to facilitate subsequent measurement, in this embodiment, the centroid of the rectangular measurement area 401 coincides with the centroid of the support plate 4, and the adjacent sides of the two are parallel to each other.

[0161] Afterwards, according to the acquired posture information, the translation, rotation and telescopic assembly 501 is controlled to move so that the sensors 1 on the four movable ends 5082 form a virtual quadrilateral (parallelogram or rectangle), and the centroid of the virtual quadrilateral coincides with the centroid of the virtual rectangle.

[0162] That is, the four sensors 1 on the four active ends 5082 form a virtual quadrilateral, and due to the mutual cooperation of the two-way telescopic structure 2 503, the two-way telescopic structure 3 504, the linear drive structure 2 506 and the linear drive structure 3 507, the virtual quadrilateral is a rectangle or a parallelogram; wherein, the centroid of the virtual quadrilateral and the centroid of the virtual rectangle are arranged on the same vertical line, so that when the vehicle is weighed, it can be symmetrically arranged about the centroid of the virtual rectangle, thereby ensuring the accuracy of the weighing result; in some embodiments, in order to further improve the service life of the sensor 1, in some embodiments, the virtual quadrilateral and the virtual rectangle are parallel to each other in the extending direction of the frame 2, so that the weight of the vehicle can be further evenly distributed. There are sensors 1, thereby increasing the service life of the sensors 1; secondly, in some embodiments, the virtual quadrilateral is also arranged inside or outside the virtual rectangle (at this time, the virtual quadrilateral is parallel to the sides of the virtual rectangle that are parallel or approximately parallel to the extension direction of the frame 2), so that the weight of the vehicle falls completely on all sensors 1, thereby further increasing the service life of the sensors 1, and keeping the working time and pressure of all sensors 1 consistent, which helps to improve the measurement accuracy; wherein, the control strategy of the virtual quadrilateral being outside the virtual rectangle is prioritized to reduce the overall energy consumption of the equipment and improve the measurement accuracy, and the priority of the virtual quadrilateral being inside the virtual rectangle and partially overlapping is reduced in turn; wherein, in this embodiment, the center of gravity of the vehicle is equated with the centroid of the virtual rectangle surrounded by all wheels.

[0163] After the translation and rotation telescopic assembly 501 completes the above-mentioned actions, it controls the four lifting structures 3 to move downward to the extreme position, so that the support plate 4 falls on the whole composed of all sensors 1. At this time, all sensors 1 are under pressure, thereby performing a weighing action, and the control structure 9 obtains the weighing data of the sensor 1 to complete the weighing action.

[0164] After weighing is completed, the translation, rotation and telescopic assembly 501 maintains the current state unchanged or resets to perform cleaning steps. If it remains unchanged, it helps to reduce the energy consumption of the equipment. Resetting to perform cleaning steps is as follows.

[0165] S2. Cleaning steps:

[0166] After the vehicle leaves the support plate 4, the four lifting structures 3 are controlled to move upward to the limit position so that the top of the support plate 4 fits the bottom of the scraper 601;

[0167] The control structure 9 controls the movement of the translation and rotation telescopic assembly 501, so that the two bidirectional telescopic structures 508 are in a cleaning state; wherein, in the cleaning state, the bidirectional telescopic structure 508 is parallel to the extension direction of the frame 2, and its two movable ends 5082 are the farthest apart, and the transmission gear 704 will mesh with the corresponding rack 702 when it moves downward to the extreme position.

[0168] Then, the two driving members (electromagnets 708 ) are controlled to work, so that the two transmission gears 704 move downward to the limit position, so that the transmission gears 704 mesh with the corresponding racks 702 .

[0169] Then, the translation and rotation telescopic component 501 is controlled to move (the two linear drive structures 507 move), so that the two movable ends 5082 of the two-way telescopic structure 508 move relatively close to each other, so that the rack 702 drives the corresponding transmission gear 704 to rotate, and the transmission gear 704 drives the scraper 601 to move from one side of the top of the support plate 4 to the other side through the limit bar 709, etc., to complete the cleaning movement.

[0170] After cleaning is completed, the control structure 9 controls the translation and rotation telescopic assembly 501 to move (the two linear drive structures 507 move), so that the two movable ends 5082 of the two-way telescopic structure 508 move away from each other until the scraper 601 is reset, and the drive component (electromagnet 708) is powered off to reset the transmission gear 704 upward, completing the cleaning.

[0171] If there is a large area of ​​accumulated water, the above operation can be repeated so that the scraper 601 can scrape multiple times, thereby achieving effective removal of the accumulated water.

[0172] When maintenance is required, S3 and maintenance steps can also be performed:

[0173] Control the translation and rotation telescopic assembly 501 to make the two bidirectional telescopic structures 1 508 parallel to the extension direction of the frame 2;

[0174] The translation and rotation telescopic assembly 501 is controlled to move (linear drive structure 505 moves), so that any bidirectional telescopic structure 508 moves out of the frame 2 through the adjacent maintenance window 201, and then the corresponding sensor 1 can be maintained.

[0175] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0176] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floor scale that is easy to maintain, comprising a weighing platform and a sensor (1), characterized in that: The weighing platform comprises a frame (2), four lifting structures (3), a support plate (4), a translational, rotational and telescopic structure and two maintenance windows (201); The top of the frame (2) is an open structure; The four lifting structures (3) are respectively installed at the four corners of the inner cavity of the frame (2); The support plate (4) is arranged inside the top end of the frame (2) and is mounted on the four lifting structures (3); The translational rotational telescopic structure comprises a translational rotational telescopic component (501) and two bidirectional telescopic structures (508); The two bidirectional telescopic structures (508) are arranged in parallel in the frame (2); The bidirectional telescopic structure (508) comprises two movable ends (5082) and a middle rod body (5081); a sensor (1) is installed on the movable end (5082), and at least one sensor (1) is installed on the middle rod body (5081); The translational rotation telescopic assembly (501) is mounted on the bottom of the inner cavity of the frame (2) and is rotationally connected to the two middle rods (5081) respectively, and is used to drive the two bidirectional telescopic structures (508) to perform any combination of parallel rotational motion, synchronous telescopic motion of adjacent ends, and horizontal reciprocating motion perpendicular to the extension direction of the frame (2); The two maintenance windows (201) are both arranged on the frame (2) and are used to allow the adjacent two-way telescopic structure 1 (508) to move out of the inner cavity of the frame (2); When the four lifting structures (3) descend to the limit position, the support plate (4) is mounted on all the sensors (1); The translation and rotation telescopic assembly (501) comprises a middle crossbar (502), a two-way telescopic structure 2 (503), a two-way telescopic structure 3 (504), a linear drive structure 1 (505), a linear drive structure 2 (506) and two linear drive structures 3 (507); The middle cross bar (502) is arranged on the bottom of the inner cavity of the frame (2), and its two ends are rotatably connected to the middle parts of the two middle rod bodies (5081) respectively; The adjacent ends of the two middle rod bodies (5081) are respectively connected via a second bidirectional telescopic structure (503); The adjacent movable ends (5082) of the two bidirectional telescopic structures (508) are connected via a bidirectional telescopic structure (504); The fixed end of the linear drive structure 1 (505) is connected to the bottom of the inner cavity of the frame (2), and the movable end (5082) is connected to the middle crossbar (502); One end of the second linear drive structure (506) is hinged to the middle crossbar (502), and the other end is hinged to one of the middle rod bodies (5081); The adjacent two-way telescopic structure 2 (503) and two-way telescopic structure 3 (504) are connected via a linear drive structure 3 (507).

2. A floor scale that is easy to maintain according to claim 1, characterized in that: The bottom end of the middle crossbar (502) is arranged in a slide groove (5021), and the slide groove (5021) is arranged on the bottom of the inner cavity of the frame (2).

3. A floor scale easy to maintain according to claim 2, characterized in that: The middle crossbar (502) comprises an upper crossbar (5022), a lower crossbar (5023) and a guide reset structure (5024); The upper crossbar (5022) is connected to a lower crossbar (5023) disposed below the upper crossbar via a guide reset structure (5024); When the lifting structure (3) is in the upward limit position, the top of the sensor (1) is in a suspended state; When the lifting structure (3) is in the downward limit position, the top and bottom of the sensor (1) are respectively in contact with the bottom of the support plate (4) and the bottom of the inner cavity of the frame (2); In any state, the bottom end of the upper cross bar (5022) is arranged in the slide groove (5021).

4. A floor scale easy to maintain according to any one of claims 1 to 3, characterized in that: Also included is a sweeping structure (6); The cleaning structure (6) comprises a scraper (601) and two transmission groups (701); The scraper (601) is arranged on an outer edge of the top of the frame (2) and is parallel to the extension direction of the frame (2); The transmission group (701) comprises a rack (702), a transmission gear (704), a transmission rod (705), a driving member, a limit bar (709), a driven gear (710), a transmission member (711), a screw rod (712), a bevel gear (713), a mounting groove (204) and a transmission chain (703); Two racks (702) are symmetrically mounted on the bidirectional telescopic structure (508) away from the scraper (601) about its center; One end of the rack (702) is connected to the adjacent movable end (5082) of the corresponding two-way telescopic structure (508), and the other end is slidably connected to the corresponding middle rod body (5081); The transmission rod (705) and the transmission member (711) are both rotatably connected to the frame (2); The limiting strip (709) is mounted on the bottom end of the transmission rod (705) and forms a whole B with the transmission rod (705); The transmission gear (704) is sleeved on the whole body B; The driving member is mounted on the frame (2) and is used to drive the transmission gear (704) to slide up and down relative to the whole B; When the driving member is in operation, the transmission gear (704) moves downward and meshes with the rack (702) in the same transmission group (701) and in the target state; When the driving member is not working, the transmission gear (704) and the translational rotation and telescopic structure in any state are not in contact with each other; The driven gear (710) is fixedly mounted on the top end of the transmission rod (705); The two mounting grooves (204) are disposed at two ends of the frame (2) in an extending direction, and the extending direction is perpendicular to the scraper (601); The screw rod (712) is rotatably mounted in the mounting groove (204), and a bevel gear (713) is mounted on one end of the screw rod; The bevel gear (713) is meshed with the first end of the transmission member (711); The transmission chain (703) is sleeved on the whole formed by the second end of the transmission member (711) and the driven gear (710); The two ends of the scraper (601) are respectively sleeved on the two screw rods (712).

5. The maintenance-friendly floor scale according to claim 4, characterized in that: A long strip-shaped notch (207) is provided on the side wall of the installation groove (204) away from the center of the frame (2), and a driven block (6011) is provided in the installation groove (204), and the driven block (6011) is sleeved on the corresponding screw rod (712); the end of the driven block (6011) away from the center direction of the frame (2) is connected to the scraper (601).

6. The maintenance-friendly floor scale according to claim 4, characterized in that: Also includes: An information acquisition structure (8) for acquiring posture information of the vehicle relative to the support plate (4); The control structure (9) is respectively connected to the lifting structure (3), the sensor (1), the information acquisition structure (8), the translation, rotation and telescopic assembly (501) and the driving member, and is used to control the operation of the device.

7. The weighing and maintenance method of a floor scale that is easy to maintain as claimed in claim 6, characterized in that: The method comprises: Acquiring posture information of a vehicle that has entered a rectangular measurement area (401) at the top of a support plate (4) and has stopped; wherein, before the vehicle enters the support plate (4), the top of the support plate (4) is coplanar with the top of the frame (2), and the posture information includes a virtual rectangle formed by all wheels of the vehicle and the centroid of the virtual rectangle; wherein the centroid of the rectangular measurement area (401) and the centroid of the support plate (4) are on the same vertical line, and one side of the rectangular measurement area (401) is parallel to an adjacent side of the support plate (4); According to the acquired posture information, the translation, rotation and telescopic assembly (501) is controlled to move so that the sensors (1) on the four movable ends (5082) form a virtual quadrilateral, and the centroid of the virtual quadrilateral coincides with the centroid of the virtual rectangle; The four lifting structures (3) are controlled to move downward until the support plate (4) is supported by all sensors (1), and the weighing data of the sensors (1) are obtained.

8. The weighing and maintenance method according to claim 7, characterized in that: The method further comprises: Controlling the four lifting structures (3) to move upward after the vehicle leaves the support plate (4) so ​​that the top of the support plate (4) fits the bottom of the scraper (601); Controlling the translation and rotation telescopic assembly (501) to move so that the two bidirectional telescopic structures (508) are in a cleaning state; wherein, in the cleaning state, the bidirectional telescopic structure (508) is parallel to the extension direction of the frame (2), and the two movable ends (5082) thereof are at the farthest distance from each other, and the transmission gear (704) meshes with the corresponding rack (702) when it moves downward to the extreme position; Controlling the two driving members to work so that the two transmission gears (704) move downward to the limit position; Controlling the translation and rotation telescopic assembly (501) to move so that the two movable ends (5082) corresponding to the two racks (702) move relatively close to each other, so that the scraper (601) moves from one side of the top of the support plate (4) to the other side, thereby performing a cleaning operation; The translation and rotation telescopic assembly (501) is controlled to move so that the two movable ends (5082) corresponding to the two racks (702) move away from each other, and after the scraper (601) is reset, the driving member is placed in a non-working state, and the transmission gear (704) is reset upward to complete the cleaning.

9. The weighing and maintenance method according to claim 8, characterized in that: The method further comprises: Controlling the translation and rotation telescopic assembly (501) to move so that the two bidirectional telescopic structures (508) are parallel to the extension direction of the frame (2); The translation and rotation telescopic assembly (501) is controlled to move so that any bidirectional telescopic structure (508) moves out of the frame (2) through an adjacent maintenance window (201) for maintenance.

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