Limiting measuring device and truck scale

Abstract

The utility model discloses a limit measuring device and a motor truck scale, and relates to the technical field of motor truck scales, the limit measuring device is used for the motor truck scale, the motor truck scale comprises an anti-collision base and a weighing platform, the limit measuring device is characterized in that the limit measuring device comprises an installation seat installed on the weighing platform; the winding pipe is rotationally arranged on the mounting seat; one end of the stay wire is wound on the bobbin, and the other end of the stay wire is connected with the anti-collision base; the driving assembly is arranged on the mounting seat, and the driving assembly is in driving connection with the winding pipe so as to drive the winding pipe to rotate, so that the stay wire has a shortening trend; and the measuring assembly is arranged on the winding pipe, and the measuring assembly is used for measuring the rotation angle of the winding pipe so as to measure the displacement of the stay wire. According to the technical scheme provided by the utility model, the distance between the weighing platform and the anti-collision base can be measured in real time, the weighing platform and the anti-collision base are prevented from being locked, and the weighing accuracy and reliability can be improved.

Description

Technical Field

[0001] This utility model relates to the field of truck scale technology, and in particular to a limit measuring device and a truck scale. Background Technology

[0002] In traditional truck scale designs, the limiting devices typically include anti-collision bases and limiting bolts. When a vehicle is on the scale, frequent acceleration or braking on the weighing platform can cause displacement of the weighing platform and sensors. In addition, the thermal effects of temperature on the steel structure weighing platform can cause the limiting bolts and anti-collision bases of the limiting devices to lock together without gap during weighing, affecting the accuracy of weighing. Utility Model Content

[0003] The main objective of this invention is to provide a limit measuring device and a truck scale, designed to measure the distance between the weighing platform and the anti-collision base in real time, thereby improving the accuracy and reliability of weighing.

[0004] To achieve the above objectives, the present invention proposes a limit measuring device for use in truck scales, the truck scale including a crash-resistant base and a weighing platform, the limit measuring device comprising:

[0005] Mounting base, for installation on the weighing platform;

[0006] The winding tube is rotatably mounted on the mounting base;

[0007] A pull wire, one end of which is wound around the winding tube, and the other end is connected to the anti-collision base;

[0008] A drive assembly, disposed on the mounting base, is drively connected to the winding tube to drive the winding tube to rotate, causing the pull wire to tend to shorten; and

[0009] A measuring component is disposed on the winding tube, the measuring component being used to measure the rotation angle of the winding tube to measure the wire displacement.

[0010] In one embodiment, the measurement component includes:

[0011] An angle sensor is disposed on the winding tube, and the angle sensor is used to detect the rotation angle of the winding tube;

[0012] The controller is communicatively connected to the angle sensor.

[0013] In one embodiment, the limiting measuring device further includes a fixed shaft, which is disposed on the mounting base, and the winding tube is sleeved on the fixed shaft and rotates along the central axis of the fixed shaft.

[0014] In one embodiment, the drive assembly is configured as a retraction spring disposed on the winding tube, such that when the weighing platform approaches the anti-collision base, the retraction spring drives the winding tube to rotate, thereby retracting the pull cord.

[0015] In one embodiment, the mounting base includes an upper cover and a bottom cover, which are disposed opposite to each other, and the two ends of the fixing shaft are respectively fixedly connected to the upper cover and the bottom cover.

[0016] In one embodiment, the limit measuring device includes an alarm that is communicatively connected to the controller.

[0017] In one embodiment, the mounting base is made of stainless steel; and / or, the pull cord is made of steel wire; and / or, the return spring is made of stainless steel.

[0018] This utility model also proposes a truck scale, including the limit measuring device as described in any of the preceding claims.

[0019] In this invention, the limiting measuring device is used on a truck scale. A mounting base is installed on the weighing platform, and a winding tube is rotatably mounted on the mounting base and can rotate freely along it. One end of the pull wire is wound around the winding tube, and the other end is connected to the anti-collision base. A drive assembly drives the winding tube to rotate, ensuring the pull wire maintains a certain tension, allowing for real-time retraction and extension as the weighing platform moves. When the weighing platform moves, the pull wire pulls the winding tube to rotate, with the rotation angle proportional to the wire's displacement. Since the measuring component is mounted on the winding tube, it rotates with the tube, measuring the rotation angle in real-time and converting it into the wire's displacement value. The measuring component transmits the displacement data to a monitoring system or remote control system to measure the distance between the weighing platform and the anti-collision base in real-time, promptly detecting any abnormal gaps and alerting staff for timely repairs. This prevents the weighing platform and anti-collision base from locking up when a vehicle is on the scale, improving weighing accuracy and reliability, allowing for timely detection of abnormalities and preventing equipment malfunctions. It also reduces the frequency of manual inspections and lowers maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of an embodiment of the limit measuring device provided by this utility model.

[0022] Explanation of icon numbers:

[0023] 100. Mounting base; 110. Top cover; 120. Bottom cover;

[0024] 200, winding tube; 210, sleeve; 220, turntable; 300, pull wire;

[0025] 400. Driver components;

[0026] 500. Measurement components;

[0027] 600. Fixed shaft.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] In traditional truck scale designs, the limiting devices typically include anti-collision bases and limiting bolts. When a vehicle is on the scale, frequent acceleration or braking on the weighing platform can cause displacement of the weighing platform and sensors. In addition, the thermal effect of temperature on the steel structure weighing platform can cause the limiting bolts and anti-collision bases of the limiting devices to lock together without gap during weighing, affecting the accuracy of weighing.

[0033] This utility model proposes a limit measuring device and a truck scale.

[0034] Please see Figure 1 In one embodiment of this utility model, the limit measuring device is used in a truck scale, which includes a crash-resistant base and a weighing platform. The limit measuring device includes:

[0035] Mounting base 100, installed on the weighing platform;

[0036] The winding tube 200 is rotatably mounted on the mounting base 100;

[0037] A pull cord 300 has one end wound around a winding tube 200 and the other end connected to the anti-collision base;

[0038] A drive assembly 400, disposed on the mounting base 100, is drively connected to the winding tube 200 to drive the winding tube 200 to rotate, causing the pull wire 300 to tend to shorten; and

[0039] The measuring component 500 is located on the winding tube 200. The measuring component 500 is used to measure the rotation angle of the winding tube 200 to measure the displacement of the pull wire 300.

[0040] In this utility model's technical solution, the limiting measuring device is used on a truck scale. A mounting base 100 is installed on the weighing platform. A winding tube 200 is rotatably mounted on the mounting base 100 and can rotate freely along the mounting base 100. One end of a pull wire 300 is wound around the winding tube 200, and the other end is connected to an anti-collision base. A drive assembly 400 drives the winding tube 200 to rotate, ensuring the pull wire 300 maintains a certain tension, allowing it to be retracted and extended in real time as the weighing platform moves. When the weighing platform moves, the pull wire 300 pulls the winding tube 200 to rotate, with the rotation angle proportional to the displacement of the pull wire 300. Due to the measuring assembly 500... Installed on the winding tube 200, it can rotate together with the winding tube 200, measure the rotation angle of the winding tube 200 in real time, and convert the rotation angle of the winding tube 200 into the displacement value of the pull wire 300. The measuring component 500 transmits the displacement data to the monitoring system or remote control system, etc., to measure the distance between the weighing platform and the anti-collision base in real time, detect abnormal gaps in time, remind staff to repair in time, and prevent the weighing platform and anti-collision base from locking when vehicles are on the scale. This can improve the accuracy and reliability of weighing, detect abnormalities in time, avoid equipment failure, and also reduce the frequency of manual inspection to a certain extent, thus reducing maintenance costs.

[0041] Specifically, the truck scale includes a weighing platform made of high-strength steel to support vehicles. Weighing sensors are installed on the platform to determine the weight of the vehicle. When a vehicle drives onto the platform, the platform may shift due to external forces. Excessive displacement may cause uneven stress on the weighing sensors or damage. A limiting device is used to constrain the platform and prevent excessive movement, ensuring the stability of the weighing process. The limiting device includes a limiting bolt on one side of the platform and an anti-collision base on the ground. The limiting bolt is fixed to one side of the platform with a nut. A mounting base 100 is installed on one side of the limiting bolt. A pull cable 300 is connected to the anti-collision base, ensuring that the pull cable 300 is aligned with the anti-collision base and that the direction of movement of the pull cable 300 coincides with the axis of movement of the anti-collision base. The shape of the mounting base 100 is not limited. A winding tube 200 is rotatably mounted on the mounting base 100, and one end of the pull cable 300 is wound around the winding tube 200. When a vehicle drives onto the scale, the platform experiences impact, generating vibration. The weighing platform moves towards the anti-collision base, which absorbs the impact and prevents excessive movement of the weighing platform, protecting the load cells on the platform. At this time, the pull cable 300 moves towards the winding tube 200. As the drive assembly 400 drives the winding tube 200 to rotate, the pull cable 300 is automatically retracted, ensuring that it maintains a certain tension. When the weighing platform returns to its original position, the pull cable 300 is stretched, pulling the winding tube 200 to rotate in the opposite direction. The measuring assembly 500 measures the rotation angle of the winding tube 200 in real time. According to the formula Displacement = Circumference of Winding Tube 200 × (Rotation Angle ÷ 360°), the rotation angle is converted into the displacement length of the pull cable 300. When the weighing platform returns to a calm state, the control system calculates the actual distance between the weighing platform and the anti-collision base based on the measured displacement length of the pull cable 300. The control system presets a safety distance threshold. When the calculated actual distance is less than the threshold, it alerts the staff to perform maintenance to prevent the weighing platform from jamming against the anti-collision base due to insufficient distance between the limit devices, thus affecting weighing.

[0042] In an embodiment of this utility model, the measuring component 500 includes:

[0043] An angle sensor is installed in the winding tube 200. The angle sensor is used to detect the rotation angle of the winding tube 200.

[0044] The controller communicates with the angle sensor.

[0045] Specifically, the measuring component 500 includes a circuit board, an angle sensor, and a controller. The circuit board is mounted on the winding tube 200 and rotates with it. The angle sensor, mounted on the circuit board, can be a high-resolution angle sensor, such as a magnetic encoder or MEMS gyroscope, with a measurement accuracy of ±0.01°, ensuring the accuracy of the displacement measurement of the pull wire 300. The angle sensor can detect the rotation angle of the winding tube 200 in real time, dynamically responding to the vibration and movement of the weighing platform and providing accurate displacement data. The angle sensor transmits the detected rotation angle data to the controller, which calculates the displacement length of the pull wire 300 according to a formula. The angle sensor and controller are mounted on the circuit board, which is mounted on the winding tube 200. The compact structure reduces external wiring and installation complexity, and also enables real-time monitoring of the distance between the limit bolt and the anti-collision base, resulting in a high degree of automation and intelligence.

[0046] In an embodiment of this utility model, the limiting measuring device further includes a fixed shaft 600, which is disposed on the mounting base 100. The winding tube 200 is sleeved on the fixed shaft 600 and rotates along the central axis of the fixed shaft 600.

[0047] Please refer to Figure 1 The fixed shaft 600 is fixedly installed on the mounting base 100. The fixed shaft 600 can be made of stainless steel. The winding tube 200 is wound around the fixed shaft 600 and rotates freely on the fixed shaft 600. When the winding tube 200 rotates, the pull wire 300 rotates accordingly. The shape of the winding tube 200 is not limited. In this embodiment, the winding tube 200 includes a sleeve 210 and a turntable 220 arranged coaxially. The sleeve 210 is located on one side of the turntable 220, and the turntable 220 and the sleeve 210 are sleeved on the fixed shaft 600. One end of the pull wire 300 is connected to the sleeve 210 so that the winding tube 200 can be rotated circumferentially on the fixed shaft 600 by pulling with the pull wire 300, or the winding tube 200 can be rotated under the drive of the drive component 400 so that the pull wire 300 can be retracted. The measuring component 500 and the drive component 400 are installed on the side of the winding tube 200 that is far away from each other, so that the structure is more evenly distributed.

[0048] In an embodiment of this utility model, the drive component 400 is configured as a retraction spring, which is located on the winding tube 200 so that when the weighing platform approaches the anti-collision base, the retraction spring drives the winding tube 200 to rotate, thereby causing the pull line 300 to retract.

[0049] Specifically, the return spring is sleeved on the fixed shaft 600 and installed on the side of the winding tube 200 away from the measuring component 500. The return spring can also be directly installed on the inner ring of the winding tube 200. The return spring has a spiral structure. When the weighing platform moves toward the anti-collision base, it can automatically drive the winding tube 200 to rotate, causing the pull line 300 to retract, thus keeping the pull line 300 under constant tension. Due to the simple structure and low manufacturing cost of the return spring, no external power supply is required. Whether the return spring automatically rotates to shorten the pull line 300 when the weighing platform moves toward the anti-collision base or the pull line 300 is lengthened when the weighing platform moves away from the anti-collision base, driving the winding tube 200 and the return spring to rotate, the return spring can respond automatically, improving the stability of operation. When the weighing platform returns to its original position, the pull line 300 is lengthened, and the return spring stores energy to provide power for the next retraction of the pull line 300, achieving efficient energy utilization.

[0050] In an embodiment of this utility model, the mounting base 100 includes an upper cover 110 and a bottom cover 120, which are arranged opposite to each other. Both ends of the fixing shaft 600 are fixedly connected to the upper cover 110 and the bottom cover 120 respectively. Referring to the figure, the mounting base 100 includes an upper cover 110 and a bottom cover 120 arranged opposite to each other, with a certain gap between them. The fixing shaft 600 is fixedly connected to both ends of the upper cover 110 and the bottom cover 120 respectively, specifically by welding or by other means. The screw connection forms a stable support structure, ensuring that the winding tube 200 does not shift or shake during rotation along the fixed axis 600. The relative arrangement of the upper cover 110 and the bottom cover 120, and their installation on one side of the limit bolt, increases the overall rigidity of the mounting base 100, allowing it to withstand greater mechanical loads. The simultaneous installation of the upper cover 110 and the bottom cover 120 on one side of the limit bolt ensures a more stable connection, guaranteeing that the pull wire 300 is connected to the anti-collision base in a horizontal state, effectively reducing the impact of vibration on internal components.

[0051] In an embodiment of this utility model, the limit measuring device includes an alarm, which is communicatively connected to the controller. The alarm can be an audible and visual alarm. When the angle sensor detects the rotation angle of the winding tube 200 and obtains the displacement of the pull wire 300 through the controller, and it is determined that the distance between the limit bolt and the anti-collision base is less than the set threshold, indicating a certain risk, the alarm will sound an alarm or light up to remind maintenance personnel to adjust or repair in a timely manner.

[0052] In the embodiments of this utility model, the mounting base 100 is made of stainless steel. Stainless steel has high strength, corrosion resistance and wear resistance. Even when used outdoors for a long time, it can ensure the stability of the mounting base 100 and has a light weight while ensuring strength.

[0053] In one embodiment, the draw wire 300 is made of steel wire. The steel wire draw wire 300 has high tensile strength and wear resistance, which can ensure that the draw wire 300 does not break or stretch during frequent winding and unwinding, thus ensuring the accuracy of measurement. In addition, the steel wire has a small diameter and is lightweight, which can reduce the load on the winding tube 200 and improve the response speed.

[0054] In one embodiment, the return spring is made of stainless steel. Stainless steel springs have high elasticity and fatigue resistance, which can ensure stable elastic performance during long-term cyclic use.

[0055] This utility model also proposes a truck scale, which includes a weighing platform and a limit measuring device. The specific structure of this subject matter is as described in the above embodiments. Since the truck scale adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A limit measuring device for a truck scale, the truck scale comprising a crash-resistant base and a weighing platform, characterized in that, The limit measuring device includes: Mounting base, for installation on the weighing platform; The winding tube is rotatably mounted on the mounting base; A pull wire, one end of which is wound around the winding tube, and the other end is connected to the anti-collision base; A drive assembly, disposed on the mounting base, is drively connected to the winding tube to drive the winding tube to rotate, causing the pull wire to tend to shorten; and A measuring component is disposed on the winding tube, the measuring component being used to measure the rotation angle of the winding tube to measure the wire displacement.

2. The limit measuring device as described in claim 1, characterized in that, The measurement component includes: An angle sensor is disposed on the winding tube, and the angle sensor is used to detect the rotation angle of the winding tube; The controller is communicatively connected to the angle sensor.

3. The limit measuring device as described in claim 2, characterized in that, The limiting measuring device also includes a fixed shaft, which is disposed on the mounting base. The winding tube is sleeved on the fixed shaft and rotates along the central axis of the fixed shaft.

4. The limit measuring device as described in any one of claims 1 to 3, characterized in that, The drive assembly is configured as a retraction spring, which is located on the winding tube so that when the weighing platform approaches the anti-collision base, the retraction spring drives the winding tube to rotate, thereby retracting the pull line.

5. The limit measuring device as described in claim 3, characterized in that, The mounting base includes an upper cover and a bottom cover, which are arranged opposite to each other, and the two ends of the fixing shaft are fixedly connected to the upper cover and the bottom cover respectively.

6. The limit measuring device as described in claim 2, characterized in that, The limit measuring device includes an alarm, which is communicatively connected to the controller.

7. The limit measuring device as described in claim 4, characterized in that, The mounting base is made of stainless steel; and / or the pull cable is made of steel wire; and / or the return spring is made of stainless steel.

8. A truck scale, characterized in that, Includes the limit measuring device as described in any one of claims 1 to 7.

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