An ultra off-load detection function truck scale

Abstract

The application belongs to the technical field of truck scales, and discloses a truck scale with super-unbalanced load detection function, which comprises a scale table, the two sides of the scale table are provided with inclined plates, the top of the scale table is movably provided with a scale plate, the bottom of the scale plate penetrates through the scale table and extends to the inner cavity of the scale table, the bottom of the scale plate is provided with a piston one, the outer surface of the piston one is movably sleeved with a sealing cylinder, the bottom of the sealing cylinder is provided with a connecting cylinder, the bottom of the connecting cylinder is fixedly connected with the inner wall of the scale table, the inside of the connecting cylinder is movably sleeved with a piston two, the outer side of the piston two penetrates through the connecting cylinder and extends to the outside of the connecting cylinder, and the inner wall of the scale table is provided with a fixed plate located outside the sealing cylinder. Thus, the running distances of the four laser emitters can be compared, so that when the rising distances of the four laser emitters are similar, it can be known that the vehicle is not unbalanced, and vice versa, so that the vehicle can be adjusted.

Description

Technical Field

[0001] This invention belongs to the field of truck scale technology, specifically a truck scale with overload and off-center load detection function. Background Technology

[0002] A truck scale is a large weighbridge set on the ground, typically used to weigh the cargo carried by trucks to prevent overloading. Current truck scales generally have a weighing laser emitter installed inside to weigh the trucks on the platform. A processor processes the signals generated by the weighing sensors, and the data is displayed on an instrument panel to check for overloading. However, current truck scales can only weigh trucks, making it impossible to detect uneven loading, which can easily lead to safety hazards and hinders their use. Therefore, improvements are needed. Summary of the Invention

[0003] The purpose of this invention is to provide a truck scale with an overload detection function to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a truck scale with overload and off-center load detection function, comprising a weighing platform, inclined plates installed on both sides of the weighing platform, a weighing plate movably installed on the top of the weighing platform, the bottom of the weighing plate penetrating the weighing platform and extending into the inner cavity of the weighing platform, a piston one installed at the bottom of the weighing plate, a sealing cylinder movably sleeved on the outer surface of the piston one, a connecting cylinder installed at the bottom of the sealing cylinder, the bottom of the connecting cylinder being fixedly connected to the inner wall of the weighing platform, a piston two movably sleeved inside the connecting cylinder, the outer side of the piston two penetrating the connecting cylinder and extending to the outside of the connecting cylinder, a fixing plate located outside the sealing cylinder installed on the inner wall of the weighing platform, and a limiter installed on the inner side of the fixing plate. The weighing platform has a limit rod, a connecting frame movably sleeved on its outer surface, the inner side of the connecting frame being fixedly connected to the outer side of the second piston, a lead screw movably sleeved in the inner cavity of the weighing platform, the top of the lead screw penetrating the weighing platform and extending to the outside of the weighing platform, a mounting frame located at the top of the weighing platform movably sleeved on the outer surface of the lead screw, the bottom of the mounting frame being fixedly connected to the top of the weighing platform, a gear located in the inner cavity of the weighing platform being mounted on the outer surface of the lead screw, the outer surface of the gear meshing with the front of the connecting frame, a movable block located in the inner cavity of the mounting frame being threaded onto the outer surface of the lead screw, a laser emitter being mounted on the left side of the movable block, a photosensitive sensor being mounted on the inner wall of the mounting frame, and a stop bar being mounted on the top of the weighing platform.

[0005] Preferably, a limiting post is installed on the inner wall of the weighing platform, and a connecting block is movably sleeved on the outer surface of the limiting post, with the top of the connecting block being fixedly connected to the bottom of the weighing platform.

[0006] Preferably, a spring is sleeved on the outer surface of the limiting post, and the two ends of the spring are fixedly connected to the inner wall of the weighing platform and the bottom of the connecting block, respectively.

[0007] Preferably, a mounting block is installed on the top of the fixed plate, a moving block is movably sleeved in the inner cavity of the mounting block, a device switch is installed on the inner wall of the mounting block, and the left side of the device switch is movably connected to the right side of the moving block.

[0008] Preferably, a second spring is connected to the left side of the moving block, and the other end of the second spring is fixedly connected to the inner wall of the mounting block.

[0009] Preferably, a push block is installed on the top of the connecting frame, the top of the push block extends into the interior of the mounting block, and the left side of the push block is movably connected to the right side of the moving block.

[0010] Preferably, a connecting rod is installed on the left side of the movable block, the top of the connecting rod penetrates the mounting frame and extends to the outer wall of the mounting frame, an indicator light is installed on the top of the connecting rod, and a connection switch is installed inside the connecting rod.

[0011] Preferably, the mounting bracket has a slot inside, and a limiting block is movably fitted inside the slot. A locking block is installed on the left side of the limiting block, and the left side of the locking block passes through the mounting bracket and extends to the outside of the connecting rod. A spring three is connected to the right side of the limiting block, and the other end of the spring three is fixedly connected to the inside of the slot.

[0012] Preferably, a stop bar is installed on the top of the weighing platform, and there are four weighing plates, all of which are the same size.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. This invention, by setting up a piston, a connecting frame, and a lead screw, allows the weighing plate to move the piston downwards when the truck scale is inspecting a vehicle. This causes the piston to squeeze the hydraulic oil inside the sealed cylinder, which in turn squeezes the piston and connecting frame outwards. Simultaneously, the meshing between the connecting frame and the gear causes the gear and lead screw to rotate. The lead screw then drives the movable block and the laser emitter upwards, allowing the laser emitter to sense the photosensitive sensor and process the information. By comparing the travel distances of the four laser emitters, it can be determined that the vehicle is not unevenly loaded when the four laser emitters have similar travel distances; otherwise, the vehicle is unevenly loaded, and adjustments are made accordingly.

[0015] 2. This invention, by setting up a moving block, a device switch, and a second spring, allows the connecting frame to move, which in turn moves the push block. The push block then moves the moving block inside the mounting block, releasing the pressure on the device switch. Simultaneously, due to the design of the device switch, the laser emitter and indicator light stop operating when the moving block presses on the switch, and resume operation when the pressure is released. This saves energy and reduces waste when no vehicles are being inspected.

[0016] 3. This invention, by setting up a connecting rod, indicator lights, and locking blocks, allows the connecting rod and indicator lights to move upwards when the movable block moves upwards. The spring force then causes the limiting block and locking blocks to move and engage with the connecting switch. Simultaneously, the locking blocks open the connecting switch, illuminating the indicator lights. Furthermore, when the connecting rod moves upwards a considerable distance, the locking blocks engage with other connecting switches, causing their indicator lights to illuminate in different colors. This prevents glare or unclear visibility of the truck scale display by allowing operators to observe the consistency of the indicator light colors. If the colors are different, the truck is unbalanced in terms of cargo load; conversely, if the colors are consistent, there is no unbalanced load. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0019] Figure 3 This is a cross-sectional view of the mounting bracket of the present invention;

[0020] Figure 4 This is a schematic cross-sectional view of the top of the present invention;

[0021] Figure 5 This is a cross-sectional view of the sealing cylinder of the present invention;

[0022] Figure 6 This is a schematic diagram of the connecting frame of the present invention;

[0023] Figure 7 This is a cross-sectional view of the mounting block of the present invention.

[0024] In the diagram: 1. Weighing platform; 2. Inclined plate; 3. Weighing plate; 4. Piston 1; 5. Sealing cylinder; 6. Connecting cylinder; 7. Piston 2; 8. Fixing plate; 9. Limiting rod; 10. Connecting frame; 11. Lead screw; 12. Gear; 13. Mounting frame; 14. Movable block; 15. Laser emitter; 16. Photosensitive sensor; 17. Limiting post; 18. Connecting block; 19. Spring 1; 20. Mounting block; 21. Moving block; 22. Equipment switch; 23. Spring 2; 24. Push block; 25. Connecting rod; 26. Connecting switch; 27. Indicator light; 28. Groove; 29. ​​Limiting block; 30. Locking block; 31. Spring 3; 32. Stop bar. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1 to 7 As shown, this embodiment of the invention provides a truck scale with an overload detection function, including a weighing platform 1. Inclined plates 2 are installed on both sides of the weighing platform 1. A weighing plate 3 is movably installed on the top of the weighing platform 1. The bottom of the weighing plate 3 penetrates the weighing platform 1 and extends into its inner cavity. A piston 4 is installed at the bottom of the weighing plate 3. A sealing cylinder 5 is movably fitted onto the outer surface of the piston 4. A connecting cylinder 6 is installed at the bottom of the sealing cylinder 5. The bottom of the connecting cylinder 6 is fixedly connected to the inner wall of the weighing platform 1. A piston 7 is movably fitted inside the connecting cylinder 6. The outer side of the piston 7 penetrates the connecting cylinder 6 and extends to its outer side. A fixing plate 8 is installed on the inner wall of the weighing platform 1, located outside the sealing cylinder 5. A limit rod 9 is installed on the inner side of the fixing plate 8. The outer surface of the limit rod 9 is movably fitted onto... A connecting frame 10 is provided, with its inner side fixedly connected to the outer side of piston 7. A lead screw 11 is movably sleeved in the inner cavity of the weighing platform 1, with the top of the lead screw 11 penetrating through the weighing platform 1 and extending to the outside of the weighing platform 1. A mounting bracket 13 located at the top of the weighing platform 1 is movably sleeved on the outer surface of the lead screw 11, with the bottom of the mounting bracket 13 fixedly connected to the top of the weighing platform 1. A gear 12 located in the inner cavity of the weighing platform 1 is installed on the outer surface of the lead screw 11, with the outer surface of the gear 12 meshing with the front of the connecting frame 10. A movable block 14 located in the inner cavity of the mounting bracket 13 is threaded onto the outer surface of the lead screw 11, with a laser emitter 15 installed on the left side of the movable block 14. A photosensitive sensor 16 is installed on the inner wall of the mounting bracket 13, and a stop bar 32 is installed on the top of the weighing platform 1.

[0027] The working principle and beneficial effects of the above technical solution are as follows: When the weighing plate 3 moves downward, it will drive the piston 4 to move downward, which will squeeze the hydraulic oil inside the sealing cylinder 5. The hydraulic oil will then squeeze the inside of the connecting cylinder 6, causing the piston 7 to move outward. At the same time, the piston 7 will drive the connecting frame 10 to move on the outer surface of the limit rod 9. Due to the meshing between the front of the connecting frame 10 and the outer surface of the gear 12, the connecting frame 10 will drive the gear 12 and the lead screw 11 to rotate. The lead screw 11 will then drive the movable block 14 and the laser emitter 15 to move upward, so that the laser emitter 15 can sense the photosensitive sensor 16. The weighing plate 3 will then compare the weight on the four tires of the truck. When the rising distance of all the laser emitters 15 is similar, it can be determined that the vehicle is not unbalanced. When the rising distance of all the laser emitters 15 differs greatly, the vehicle is unbalanced and needs to be adjusted. At the same time, the distance obtained by the weighing plate 3 is processed by the processor to check the weight of the vehicle and determine whether it is overloaded.

[0028] like Figure 2 As shown, in one embodiment, a limiting post 17 is installed on the inner wall of the weighing platform 1, and a connecting block 18 is movably sleeved on the outer surface of the limiting post 17. The top of the connecting block 18 is fixedly connected to the bottom of the weighing plate 3.

[0029] The working principle and beneficial effects of the above technical solution are as follows: When the weighing plate 3 weighs, it will move downwards, and then the connecting block 18 will move on the outer surface of the limiting post 17. Due to the design of the limiting post 17, the weighing plate 3 will have a good limiting effect when it moves, so as to prevent the position from shifting.

[0030] like Figure 2 As shown, in one embodiment, a spring 19 is sleeved on the outer surface of the limiting post 17, and the two ends of the spring 19 are fixedly connected to the inner wall of the weighing platform 1 and the bottom of the connecting block 18, respectively.

[0031] The working principle and beneficial effects of the above technical solution are as follows: At this time, since the spring 19 is in a compressed state, it will apply an upward pressure to the connecting block 18, which will facilitate the reset of the weighing plate 3, making it convenient for subsequent vehicles to be weighed.

[0032] like Figure 7 As shown, in one embodiment, a mounting block 20 is installed on the top of the fixed plate 8, a moving block 21 is movably sleeved in the inner cavity of the mounting block 20, and a device switch 22 is installed on the inner wall of the mounting block 20. The left side of the device switch 22 is movably connected to the right side of the moving block 21.

[0033] The working principle and beneficial effects of the above technical solution are as follows: when the moving block 21 moves to the left, it releases the pressure on the equipment switch 22. As a result of the design of the equipment switch 22, the operation of the laser emitter 15 and the indicator light 27 can be controlled. In this way, when no vehicle is performing overload detection, the power supply to the equipment is stopped, which can save energy and reduce losses.

[0034] like Figure 7 As shown, in one embodiment, a second spring 23 is connected to the left side of the moving block 21, and the other end of the second spring 23 is fixedly connected to the inner wall of the mounting block 20.

[0035] The working principle and beneficial effects of the above technical solution are as follows: Since the second spring 23 is in a compressed state, it will apply an outward pressure to the moving block 21, which will facilitate the moving block 21 to squeeze the device switch 22, thereby stopping the laser emitter 15 and the indicator light 27 from operating, so that energy can be saved when no detection is being performed.

[0036] like Figure 7 As shown, in one embodiment, a push block 24 is mounted on the top of the connecting frame 10. The top of the push block 24 extends into the interior of the mounting block 20, and the left side of the push block 24 is movably connected to the right side of the moving block 21.

[0037] The working principle and beneficial effects of the above technical solution are as follows: When the connecting frame 10 moves, it will squeeze the moving block 21, thereby causing the moving block 21 to release the squeezing of the equipment switch 22. In turn, the equipment switch 22 controls the operation of the laser emitter 15 and the indicator light 27, making it easier to detect overload and off-center loads on the truck, which brings convenience to the operator.

[0038] like Figure 3 As shown, in one embodiment, a connecting rod 25 is installed on the left side of the movable block 14. The top of the connecting rod 25 passes through the mounting frame 13 and extends to the outer wall of the mounting frame 13. An indicator light 27 is installed on the top of the connecting rod 25, and a connection switch 26 is installed inside the connecting rod 25.

[0039] The working principle and beneficial effects of the above technical solution are as follows: When the movable block 14 moves upward, it will drive the connecting rod 25 to move upward, and then the connecting rod 25 will drive the indicator light 27 to move upward, so that the indicator light 27 moves out from the inside of the mounting bracket 13, making it easier for the operator to check whether the vehicle is unbalanced when the display device is not clearly visible, thus bringing convenience to the operator.

[0040] like Figure 3As shown, in one embodiment, a slot 28 is provided inside the mounting bracket 13. A limiting block 29 is movably fitted inside the slot 28. A locking block 30 is installed on the left side of the limiting block 29. The left side of the locking block 30 passes through the mounting bracket 13 and extends to the outside of the connecting rod 25. A spring 31 is connected to the right side of the limiting block 29. The other end of the spring 31 is fixedly connected to the inside of the slot 28.

[0041] The working principle and beneficial effects of the above technical solution are as follows: When the connecting rod 25 moves upward, it will move upward through the connecting rod 25 and the indicator light 27. Then, because the spring 31 is in a compressed state, it will apply an outward pressure to the limit block 29, making it easier to drive the locking block 30 into the connecting switch 26. At the same time, since the connecting switch 26 is the switch of the indicator light 27, the indicator light 27 will light up in different colors when the locking block 30 is locked into different connecting switches 26. Therefore, when the overload detection data is displayed on the display device and there is glare or it is not visible, the color of the light emitted by the indicator light 27 can be observed to see if they are consistent. When the colors are consistent, it means that the vehicle is not overloaded. When the colors are different, it means that the vehicle is overloaded and needs to be adjusted.

[0042] like Figure 1 As shown, in one embodiment, a baffle 32 is installed on the top of the weighing platform 1, and there are four weighing plates 3, all of which are the same size.

[0043] The working principle and beneficial effects of the above technical solution are as follows: Due to the design of the stop bar 32 and the mounting bracket 13, it is convenient to protect the top of the symmetrical platform 1, so as to prevent the vehicle from sliding off the top of the weighing platform 1. At the same time, due to the design of the four weighing plates 3, it is convenient to weigh the weight of the four wheels of the truck, so as to detect whether the vehicle is overloaded or unbalanced, thereby ensuring the safe driving of the vehicle.

[0044] Working principle and usage process:

[0045] First, when the operator is performing an overload / off-center load test on the truck, the truck is driven onto the top of the weighing platform 1 via the inclined plate 2. The truck's wheels are then positioned on top of the four weighing plates 3, causing the truck's weight to compress the weighing plates 3. This compresses the weighing plates 3 and piston 4, causing them to move downwards. Piston 4 then compresses the hydraulic oil inside the sealing cylinder 5, which in turn moves piston 7 outwards. Piston 7 then moves the connecting frame 10 along the outer surface of the limiting rod 9. Due to the design of the limiting rod 9, the connecting frame 10 has a good limiting effect during movement, preventing positional deviation. Then, because the front of the connecting frame 10 is in contact with gear 1... The meshing between the outer surfaces causes the gear 12 and lead screw 11 to rotate via the connecting frame 10. Subsequently, the lead screw 11 drives the movable block 14 and the laser emitter 15 to move upward, causing the laser emitter 15 to sense the photosensitive sensor 16 and send a signal to the processor. The processor then processes the signal to obtain the weight values ​​at four locations, which can be viewed on the display device. By measuring the movement distance of the four laser emitters 15, if the upward distances of the four laser emitters 15 are similar, it indicates that the vehicle is not unevenly loaded. Conversely, if the upward distances of the four laser emitters 15 differ significantly, the vehicle is unevenly loaded, requiring adjustment to avoid safety hazards during operation.

[0046] Then, when the operator is inspecting the truck, the piston 2 7 will drive the connecting frame 10 to move on the outer surface of the limit rod 9, and the connecting frame 10 will drive the push block 24 to move, so that the push block 24 moves the moving block 21 inside the mounting block 20. At the same time, the pressure on the equipment switch 22 will be released, so that the equipment switch 22 controls the operation of the laser emitter 15 and the indicator light 27. When the weighing plate 3 is reset, the connecting frame 10 and the push block 24 will be reset. Then, due to the elastic force of the spring 23, the moving block 21 will be driven to press the equipment switch 22 again, so that the equipment switch 22 stops the laser emitter 15 and the indicator light 27 from starting. This allows the truck scale to save energy and reduce waste when there are no vehicles being inspected.

[0047] Subsequently, when the operator observes glare or blurred vision on the truck scale display, the movable block 14 moves the connecting rod 25 and indicator light 27 upwards, causing the connecting switch 26 to move to the outside of the locking block 30. Then, due to the elastic force of the spring 31, the limiting block 29 and locking block 30 move, locking into the connecting switch 26. The locking block 30 then activates the connecting switch 26, illuminating the indicator light 27. Simultaneously, as the connecting rod 25 moves upwards, it re-presses the locking block 30 into the slot 28, locking into the next connecting switch 26. This illuminates different colored lights, allowing the operator to observe whether the colors of the indicator lights 27 are consistent when the truck scale display is glaring or blurred. If the colors are different, the vehicle's cargo is unevenly loaded; otherwise, there is no uneven loading.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A truck scale with overload and off-center load detection function, comprising a weighing platform (1), characterized in that: Inclined plates (2) are installed on both sides of the weighing platform (1). A weighing plate (3) is movably installed on the top of the weighing platform (1). The bottom of the weighing plate (3) penetrates the weighing platform (1) and extends into the inner cavity of the weighing platform (1). A piston (4) is installed at the bottom of the weighing plate (3). A sealing cylinder (5) is movably fitted onto the outer surface of the piston (4). A connecting cylinder (6) is installed at the bottom of the sealing cylinder (5). The bottom of the connecting cylinder (6) is fixedly connected to the inner wall of the weighing platform (1). A piston (7) is movably fitted inside the connecting cylinder (6). The outer side of the piston (7) penetrates the connecting cylinder (6) and extends to the outside of the connecting cylinder (6). A fixing plate located outside the sealing cylinder (5) is installed on the inner wall of the weighing platform (1). (8) A limiting rod (9) is installed on the inner side of the fixing plate (8). A connecting frame (10) is movably sleeved on the outer surface of the limiting rod (9). The inner side of the connecting frame (10) is fixedly connected to the outer side of the piston (7). A lead screw (11) is movably sleeved in the inner cavity of the weighing platform (1). The top of the lead screw (11) passes through the weighing platform (1) and extends to the outside of the weighing platform (1). A mounting frame (13) located at the top of the weighing platform (1) is movably sleeved on the outer surface of the lead screw (11). The bottom of the mounting frame (13) is fixedly connected to the top of the weighing platform (1). A gear (12) located in the inner cavity of the weighing platform (1) is installed on the outer surface of the lead screw (11). The outer surface of the gear (12) is connected to the positive side of the connecting frame (10). The screw (11) is threaded onto the outer surface of a movable block (14) located inside the mounting frame (13). A laser emitter (15) is mounted on the left side of the movable block (14). A photosensitive sensor (16) is mounted on the inner wall of the mounting frame (13). A stop bar (32) is mounted on the top of the weighing platform (1). A mounting block (20) is mounted on the top of the fixed plate (8). A moving block (21) is movably fitted into the inner cavity of the mounting block (20). A device switch (22) is mounted on the inner wall of the mounting block (20). The left side of the device switch (22) is movably connected to the right side of the moving block (21). A second spring (23) is connected to the left side of the moving block (21). The other end is fixedly connected to the inner wall of the mounting block (20). A push block (24) is installed on the top of the connecting frame (10). The top of the push block (24) extends into the interior of the mounting block (20). The left side of the push block (24) is movably connected to the right side of the moving block (21). A connecting rod (25) is installed on the left side of the moving block (14). The top of the connecting rod (25) passes through the mounting frame (13) and extends to the outer wall of the mounting frame (13). An indicator light (27) is installed on the top of the connecting rod (25). A connecting switch (26) is installed inside the connecting rod (25). A slot (28) is opened inside the mounting frame (13). A limit block (29) is movably fitted inside the slot (28).A locking block (30) is installed on the left side of the limiting block (29). The left side of the locking block (30) passes through the mounting bracket (13) and extends to the outside of the connecting rod (25). A spring three (31) is connected to the right side of the limiting block (29). The other end of the spring three (31) is fixedly connected to the inside of the slot (28).

2. The truck scale with overload and off-center load detection function according to claim 1, characterized in that: The inner wall of the weighing platform (1) is equipped with a limiting post (17), and the outer surface of the limiting post (17) is movably sleeved with a connecting block (18). The top of the connecting block (18) is fixedly connected to the bottom of the weighing plate (3).

3. A truck scale with overload and off-center load detection function according to claim 2, characterized in that: The outer surface of the limiting post (17) is fitted with a spring (19), and the two ends of the spring (19) are fixedly connected to the inner wall of the weighing platform (1) and the bottom of the connecting block (18), respectively.

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