Motor truck scale anti-cheating sensor and mounting structure thereof

Abstract

The utility model relates to the technical field of motor truck scales, in particular to a motor truck scale anti-cheating sensor and a mounting structure thereof, which comprise a sensor, the sensor comprises a rigid body and an elastic body, the elastic body is provided with a detection assembly, the rigid body and the elastic body are externally provided with a protection assembly, the bottom of the rigid body is provided with a mounting structure, and the rigid body is internally provided with an alarm assembly. According to the utility model, the protection assembly is arranged, the anti-disassembly cover is fixed by the fixing screws and the pressing plate, and the elastic body and the rigid body are protected by the anti-disassembly cover; the alarm assembly is arranged, the elastic piece is used for driving the sliding assembly to abut against the pressing plate, when the pressing plate moves, the sliding assembly is driven by the elastic piece to move, the distance between the permanent magnet and the Hall sensor is changed, and therefore disassembly prevention is achieved, and cheating is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of truck scales, in particular to an anti-cheating sensor for truck scales and its installation structure. Background Technique

[0002] Electronic truck scales, also known as weighbridges, are indispensable important equipment in fields such as logistics and industry. It is responsible for accurately measuring the weight of transport vehicles or goods and is a key link to ensure fair and just transactions. In actual use, some people will change the measurement results through cheating to make a profit. For example, by installing a remote control on the weighbridge, the cheater can remotely control the weighing data, thus changing the normal weighing result.

[0003] Cheating through the remote control usually damages the encapsulation shell of the sensor and installs a chip inside to change the output data of the sensor. In the prior art, in order to prevent the output data of the sensor from being changed, a protective shell is usually installed outside the sensor to prevent the sensor encapsulation from being disassembled and damaged. However, some people still install a chip by removing the protective shell and then restore the protective shell. The damage of the protective shell is usually not immediately discovered and can only be detected by the operator during maintenance, which has a security vulnerability. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides an anti-cheating sensor for truck scales and its installation structure.

[0005] The technical solution of the utility model is as follows:

[0006] An anti-cheating sensor for truck scales and its installation structure, including:

[0007] A sensor, the sensor includes a rigid body and an elastic body, a detection component is provided at the elastic body, a protection component is provided outside the rigid body and the elastic body, an installation structure is provided at the bottom of the rigid body, and an alarm component is provided inside the rigid body;

[0008] The protection component includes an anti-disassembly cover, the anti-disassembly cover wraps the elastic body and the upper part of the rigid body, pressing plates are provided on the left and right sides of the anti-disassembly cover, the pressing plates are fixedly connected to the rigid body through fixing screws, and the inner side surface of the pressing plate is connected to the alarm component;

[0009] The alarm component includes a sliding component, one end of the sliding component abuts against the pressing plate, the other end is connected with an elastic member, a detection device is arranged between the elastic members, the elastic member is used to drive the sliding component to abut against the pressing plate, and the detection device is used to detect whether the sliding component moves.

[0010] Preferably, a T-shaped hole is provided inside the bottom of the rigid body. The T-shaped hole penetrates through the left and right sides of the rigid body and extends downward through the bottom surface of the rigid body. The alarm assembly is located inside the T-shaped hole.

[0011] Preferably, a bracket is provided below the rigid body, and a base is provided below the bracket.

[0012] Preferably, clamping plates are provided on the left and right sides of the anti-disassembly cover. The inner sides of the clamping plates are in contact with the sides of the rigid body and the elastic body, and the pressing plate presses on the outer sides of the clamping plates.

[0013] Preferably, the detection device includes a hollow screw, which is threadedly installed in the vertical hole of the T-shaped hole. A Hall sensor is provided at the top of the hollow screw, and the wire of the Hall sensor passes through the through hole of the hollow screw.

[0014] Preferably, the sliding assembly includes a permanent magnet, which is slidably installed in the horizontal hole of the T-shaped hole. The elastic member is located between the permanent magnet and the Hall sensor.

[0015] Preferably, a pressing column is slidably installed inside the T-shaped hole on the outer side of the permanent magnet, and the end surface of the pressing column is in contact with the pressing plate.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] In the present utility model, by providing a protection assembly, the anti-disassembly cover is fixed by using fixing screws and the pressing plate, and the elastic body and the rigid body are protected by using the anti-disassembly cover; by providing an alarm assembly, the elastic member is used to drive the sliding assembly to be in contact with the pressing plate. When the pressing plate moves, the sliding assembly moves under the drive of the elastic member, and the distance between the permanent magnet and the Hall sensor changes, thereby realizing anti-disassembly and further preventing cheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the sensor structure in the present utility model;

[0020] Figure 3 is a schematic diagram of the protection assembly structure in the present utility model;

[0021] Figure 4 is a schematic diagram of the alarm assembly structure in the present utility model.

[0022] The meanings of the various reference numerals in the figure are as follows:

[0023] 1. Sensor; 11. Base; 12. Bracket; 13. Rigid body; 14. T-shaped hole; 15. Elastic body; 16. Deformation hole; 17. Strain gauge; 18. Signal cable; 19. Bracket;

[0024] 2. Protection component; 21. Anti-disassembly cover; 22. Bracket groove; 23. Cable groove; 24. Splint; 25. Pressure plate; 26. Fixing screw;

[0025] 3. Alarm component; 31. Hollow screw; 32. Hall sensor; 33. Elastic member; 34. Permanent magnet; 35. Extrusion column. Specific implementation manner

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, 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", "clockwise", "counterclockwise", 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 invention 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 thus cannot be understood as a limitation of the present invention.

[0028] Embodiment 1:

[0029] Please refer to Figures 1-4 , the present invention details the above technical solutions through the following embodiments:

[0030] An anti-cheating sensor for a weighbridge and its installation structure, comprising:

[0031] Sensor 1, the sensor 1 includes a rigid body 13 and an elastic body 15. A detection component is provided at the elastic body 15. A protection component 2 is provided outside the rigid body 13 and the elastic body 15. An installation structure is provided at the bottom of the rigid body 13. An alarm component 3 is provided inside the rigid body 13.

[0032] The rigid body 13 and the elastic body 15 are connected by bolts. The elastic body 15 is provided with a deformation hole 16 that penetrates through the front and rear. A strain gauge 17 is pasted in the deformation hole 16. A signal cable 18 is provided on the side of the elastic body 15. A bracket 19 is clamped in the middle of the top surface of the elastic body 15.

[0033] The bracket 19 abuts against the load platform of the weighbridge through steel balls and is used to bear the gravity of the load platform and heavy objects. The strain gauge 17 uses a well-known resistance strain gauge to sense the deformation of the elastic body 15. The signal cable 18 is used to output the detection data.

[0034] There is a T-shaped hole 14 inside the bottom of the rigid body 13. The T-shaped hole 14 penetrates through the left and right sides of the rigid body 13 and runs through the bottom surface of the rigid body 13 downward.

[0035] The T-shaped hole 14 is a round hole and includes a horizontal hole and a vertical hole. The rigid body 13 is used to bear the pressure transmitted by the elastic body 15.

[0036] A bracket 12 is welded below the rigid body 13, and a base 11 is fixedly installed below the bracket 12 through bolts.

[0037] A circular through-hole runs through the center of the bracket 12 vertically. The through-hole is aligned with the vertical hole of the T-shaped hole 14, and the inner diameter of the through-hole is larger than the outer diameter of the vertical hole of the T-shaped hole 14.

[0038] The base 11 disperses the pressure borne by the rigid body 13, and the base 11 is fixedly connected to the ground through expansion bolts.

[0039] The protection component 2 includes an anti-tamper cover 21. The anti-tamper cover 21 wraps the elastic body 15 and the upper part of the rigid body 13. There are pressing plates 25 on the left and right sides of the anti-tamper cover 21. The pressing plates 25 are fixedly connected to the rigid body 13 through fixing screws 26, and the inner side surfaces of the pressing plates 25 are connected to the alarm component 3.

[0040] The anti-tamper cover 21 is made by stamping a steel plate. There is a bracket groove 22 at the top of the anti-tamper cover 21, which can prevent conflicts with the bracket 19. There are cable grooves 23 on the left and right sides of the anti-tamper cover 21 for the signal cable 18 to pass through.

[0041] There are clamping plates 24 on the left and right sides of the anti-tamper cover 21. The inner sides of the clamping plates 24 abut against the sides of the rigid body 13 and the elastic body 15, and the pressing plates 25 press on the outer sides of the clamping plates 24.

[0042] The fixing screw 26 passes through the pressing plate 25 and the clamping plate 24 and is threadedly connected to the rigid body 13 to realize the fixed connection of the anti-tamper cover 21 and the pressing plate 25 to the rigid body 13.

[0043] The inner side surface of the middle part of the clamping plate 24 abuts against the side surface of the rigid body 13.

[0044] The alarm component 3 includes a sliding component. One end of the sliding component abuts against the pressing plate 25, and the other end is connected with an elastic member 33. There is a detection device between the elastic members 33. The elastic member 33 is used to drive the sliding component to abut against the pressing plate 25, and the detection device is used to detect whether the sliding component moves. The alarm component 3 is located in the T-shaped hole 14.

[0045] The elastic member 33 can be a spring. There are two elastic members 33, and the two elastic members 33 are symmetrically and slidably installed in the horizontal hole of the T-shaped hole 14.

[0046] The detection device includes a hollow screw 31, and the hollow screw 31 is threadedly installed in the vertical hole of the T-shaped hole 14. A Hall sensor 32 is provided at the top of the hollow screw 31.

[0047] The Hall sensor 32 is used to detect the change of the magnetic field. The wire of the Hall sensor 32 passes downward through the hollow screw 31 and is connected to an external device. The external device can be an audible and visual alarm device.

[0048] The sliding assembly includes a permanent magnet 34, and the permanent magnet 34 is slidably installed in the horizontal hole of the T-shaped hole 14. The elastic member 33 is located between the permanent magnet 34 and the Hall sensor 32.

[0049] The magnetic field of the permanent magnet 34 can be detected by the Hall sensor 32. When the permanent magnet 34 moves, the Hall sensor 32 can detect the change of the magnetic field and generate a signal.

[0050] A pressing column 35 is slidably installed outside the permanent magnet 34 and within the T-shaped hole 14, and the end face of the pressing column 35 abuts against the pressing plate 25.

[0051] The pressing column 35 is made of plastic material. When the pressing plate 25 is removed, under the elastic force of the elastic member 33, the permanent magnet 34 and the pressing column 35 slide, so that the distance between the permanent magnet 34 and the Hall sensor 32 changes, and further the magnetic field intensity detected by the Hall sensor 32 changes, thus triggering an alarm.

[0052] In this embodiment, when an operator uses this device, the base 11 is fixedly installed on the ground by bolts, and the load platform of the weighbridge is placed above the sensor 1.

[0053] When relevant personnel want to install a chip in the elastomer 15, the anti-tamper cover 21 needs to be removed.

[0054] To remove the anti-tamper cover 21, the pressing plate 25 needs to be removed first. To remove the pressing plate 25, the fixing screw 26 needs to be removed first. When one fixing screw 26 is removed and the other fixing screw 26 is to be loosened, the pressure exerted by the pressing plate 25 on the pressing column 35 decreases.

[0055] Under the elastic force of the elastic member 33, the pressing column 35 and the permanent magnet 34 push open the pressing plate 25 and move. At this time, the magnetic field intensity on both sides of the Hall sensor 32 changes, and the Hall sensor 32 detects the magnetic field change and generates a signal.

[0056] The signal generated by the Hall sensor 32 will alarm the staff, playing a role in preventing cheating.

[0057] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-cheating sensor for a weighbridge and its installation structure, characterized in that, Comprising: A sensor (1), the sensor (1) includes a rigid body (13) and an elastic body (15), a detection component is provided at the elastic body (15), a protection component (2) is provided outside the rigid body (13) and the elastic body (15), an installation structure is provided at the bottom of the rigid body (13), and an alarm component (3) is provided inside the rigid body (13); The protection component (2) includes an anti - disassembly cover (21), the anti - disassembly cover (21) wraps the elastic body (15) and the upper part of the rigid body (13), pressing plates (25) are provided on the left and right sides of the anti - disassembly cover (21), the pressing plates (25) are fixedly connected to the rigid body (13) through fixing screws (26), and the inner side of the pressing plate (25) is connected to the alarm component (3); The alarm component (3) includes a sliding component, one end of the sliding component abuts against the pressing plate (25), the other end is connected with an elastic member (33), a detection device is provided between the elastic members (33), the elastic member (33) is used to drive the sliding component to abut against the pressing plate (25), and the detection device is used to detect whether the sliding component moves.

2. The anti-cheating sensor for a weighbridge and its installation structure according to claim 1, characterized in that: A T - shaped hole (14) is provided inside the bottom of the rigid body (13), the T - shaped hole (14) penetrates through the left and right sides of the rigid body (13) and penetrates downward through the bottom surface of the rigid body (13), and the alarm component (3) is located in the T - shaped hole (14).

3. The anti-cheating sensor for a weighbridge and its installation structure according to claim 1, characterized in that: A bracket (12) is provided below the rigid body (13), and a base (11) is provided below the bracket (12).

4. The anti-cheating sensor for a weighbridge and its installation structure according to claim 1, characterized in that: Clamping plates (24) are provided on the left and right sides of the anti - disassembly cover (21), the inner sides of the clamping plates (24) abut against the sides of the rigid body (13) and the elastic body (15), and the pressing plate (25) presses on the outer sides of the clamping plates (24).

5. The anti-cheating sensor for a weighbridge and its installation structure according to claim 2, characterized in that: The detection device includes a hollow screw (31), the hollow screw (31) is threadedly installed in the vertical hole of the T - shaped hole (14), a Hall sensor (32) is provided at the top of the hollow screw (31), and the Hall sensor (32) is used to detect magnetic field changes.

6. The anti-cheating sensor for a weighbridge and its installation structure according to claim 5, characterized in that: The sliding component includes a permanent magnet (34), the permanent magnet (34) is slidably installed in the horizontal hole of the T - shaped hole (14), and the elastic member (33) is located between the permanent magnet (34) and the Hall sensor (32).

7. The anti-cheating sensor for a weighbridge and its installation structure according to claim 6, characterized in that: An extrusion column (35) is slidably installed outside the permanent magnet (34) and inside the T - shaped hole (14), and the end face of the extrusion column (35) abuts against the pressing plate (25).

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