Platform type weighing box structure

Abstract

The utility model discloses a platform type weighing box structure, and aims to overcome the defect that the inclination angle of a steel ladle cannot be limited when the steel ladle is weighed. The device comprises a load-bearing platform and a base, a weighing sensor and a positioning mechanism are installed between the load-bearing platform and the base, the load-bearing platform is provided with a jacking block extending outwards, and the jacking block is provided with a jacking plane; the positioning mechanism comprises a guide sleeve and a guide column, and the guide sleeve and the guide column are movably connected in a sleeved mode to achieve transverse positioning of the bearing platform and the base. The platform type weighing box structure is specially used for a steel ladle with a rotary lug seat, can effectively weigh the weight of the steel ladle when the steel ladle is seated, can limit the inclination angle of the steel ladle, and is convenient to align with an argon blowing device.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical technology, and more specifically, to a platform-type weighing box structure. Background Technology

[0002] Currently, there are two types of ladle weighing boxes on the market: one is the load-bearing beam type weighing box, and the other is the guide column and guide sleeve type weighing box. When these two types of weighing boxes are used on this type of ladle car, the following problems exist: (1) The beam width of the load-bearing beam type weighing box is usually no more than 350mm, and only two bridge sensors are arranged in a single row and fixed with bolts. If a device to restrict rotation is installed on the load-bearing beam, the total width must reach more than 600mm. For the single row of sensors, the overturning moment generated laterally is too large and does not meet the strength requirements; (2) For the guide column and guide sleeve type weighing box, the device to restrict rotation can only be installed on the outside, which is an external force and will inevitably affect the accuracy of the weighing box.

[0003] To improve the quality of steelmaking, after steel is tapped from a converter or electric arc furnace and poured into a ladle, an argon blowing device is typically used to inject inert gas into the molten steel. This serves to agitate the steel, enhance flow, degas, and remove inclusions, significantly improving the purity, uniformity, and pourability of the molten steel. The argon blowing device is usually mounted on the ladle car, with the blowing nozzle aligned with the interface on the ladle car, and spring pressure used to prevent leakage. Compared to ladle cars without an argon blowing device, the ladle's position must be accurate, and the tilt angle when lowering the ladle cannot be too large to prevent misalignment between the blowing nozzle and the interface on the ladle car. Current ladle weighing boxes do not consider the positional relationship between the blowing nozzle and the interface on the ladle car, and cannot guarantee that the two will be aligned.

[0004] For example, Chinese patent application number 2020213972642 discloses a simple ladle weighing platform. This weighing platform has a reasonable structure, is easy to operate, effectively cools down, and has high weighing accuracy. It can be widely used in metering systems in steel plants and other similar working environments with high temperature, high dust, and high radiation, resulting in considerable economic benefits. However, it does not consider how to align the argon blowing head with the interface on the ladle car when the ladle tilt angle is too large during the weighing process. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a platform-type weighing box structure, which is specifically designed for steel ladles with rotating lugs. When the ladle is in place, it can effectively weigh the weight of the ladle and limit the tilt angle of the ladle, making it easier to align with the argon blowing device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a platform-type weighing box structure, including a load-bearing platform and a base, a weighing sensor and a positioning mechanism are installed between the load-bearing platform and the base, a top-aligning block extending outward is provided on the load-bearing platform, and a top-aligning plane is provided on the top-aligning block; the positioning mechanism includes a guide sleeve and a guide post, and the guide sleeve and the guide post are movably connected to realize the lateral positioning of the load-bearing platform and the base.

[0007] The ladle with rotating lugs is transferred to the load-bearing platform. The lower end of the rotating lugs rests on the load-bearing platform, and a top-aligning block extending outward from the platform reaches the fixed seat in the direction of the ladle. When the ladle tilts at an excessive angle, the top-aligning plane on the top-aligning block can straighten the ladle, ensuring that the argon blowing head is accurately aligned with the interface on the ladle. A load cell is used to weigh the ladle, and a positioning mechanism positions the load-bearing platform and base, preventing lateral movement of the platform and base and ensuring the accuracy and reliability of the weighing.

[0008] The platform-type weighing box structure of this patent application is specifically designed for steel ladles with rotating lugs. When the ladle is in place, it can effectively weigh the weight of the ladle and limit the tilt angle of the ladle, which is convenient for aligning with the argon blowing device.

[0009] As a preferred option, two opposing outer stops are provided around the perimeter of the load-bearing platform, and a positioning guide groove is formed between the two outer stops for the rotating lug to pass through.

[0010] The two outer stops are positioned opposite each other to form a positioning guide groove. The rotating lugs installed on the outer wall of the ladle move downward through the positioning guide groove to ensure that the lower end of the rotating lugs can be accurately supported on the load-bearing platform.

[0011] Preferably, an inclined guide surface is provided on the upper edge of the outer stop face, so that the width of the upper end of the positioning guide groove gradually decreases from top to bottom.

[0012] The width of the upper end of the positioning guide groove gradually decreases from top to bottom, which has a good guiding effect on the rotating lug.

[0013] Preferably, the guide sleeve is installed on the load-bearing platform, and the guide post is installed on the base; the load-bearing platform is provided with mounting holes, the guide sleeve is installed in the mounting holes, and a baffle is installed on the load-bearing platform, with the lower end of the guide sleeve supported on the baffle.

[0014] After the supporting rotating lugs are subjected to gravity, the load-bearing platform will move slightly downwards. During this process, the guide sleeve moves downwards along the guide post to prevent lateral displacement of the load-bearing platform and ensure the stability of the support. The baffle limits the lower end of the guide sleeve to prevent it from detaching from the load-bearing platform.

[0015] Preferably, a buffer layer is provided on both the inner and outer walls of the guide sleeve.

[0016] The buffer layer acts as a buffer when subjected to impact.

[0017] Preferably, an upper support is installed on the load-bearing platform, a lower support is installed on the base, the load cell is installed on the lower support, and a support column is installed between the load cell and the upper support.

[0018] The upper support, lower support, and column configuration ensure reliable installation of the load cell, making weighing more accurate and reliable.

[0019] Preferably, an upper positioning groove is provided on the upper support, the bottom surface of the upper positioning groove has an outward convex spherical structure, and the upper end of the column is supported on the bottom surface of the upper positioning groove; a positioning seat is installed on the load cell, and a lower positioning groove is provided on the lower end surface of the column, the bottom surface of the lower positioning groove has an outward convex spherical structure, and the positioning seat is supported on the bottom surface of the lower positioning groove.

[0020] To ensure weighing accuracy, the load-bearing platform needs to return to its initial position accurately after being subjected to impact. Therefore, the load cell and loading connection device must have excellent recovery performance. In this design, both the bottom surfaces of the upper and lower positioning grooves are convex spherical structures, allowing the load-bearing platform to automatically adjust to a balanced position after impact. This ensures that the entire load-bearing platform accurately returns to its initial position under the weight of the ladle after the horizontal impact is eliminated, perfectly meeting the application requirements of the electronic scale in this project and demonstrating excellent performance.

[0021] Preferably, a safety limiter is installed between the load-bearing platform and the base. The safety limiter includes an upper limit seat and a lower limit seat, with a connecting pin between the upper limit seat and the lower limit seat, and a lifting clearance is provided between the upper limit seat and the lower limit seat.

[0022] The safety limiter is installed between the load-bearing platform and the base to prevent them from separating and to prevent the load-bearing platform from shifting or tilting, thus providing a safety protection function. The lifting gap provides room for movement after the load-bearing platform is impacted, ensuring that the gravity on the load-bearing platform is applied to the weighing sensor and guaranteeing the accuracy of weighing.

[0023] Preferably, the lower limit seat is provided with a slot to form a U-shaped structure, and the upper limit seat is in the form of a T-shaped structure. The lower part of the upper limit seat is inserted into the slot, and the upper limit seat is provided with a socket. The pin is fastened to the lower limit seat, and the pin passes through the socket. The gap between the outer wall of the pin and the inner wall of the socket forms a lifting gap.

[0024] The U-shaped lower limit seat and the T-shaped upper limit seat are easy and reliable to connect.

[0025] Preferably, two opposing positioning mechanisms are installed between the load-bearing platform and the base, and load cells are installed at the four corners between the load-bearing platform and the base.

[0026] Two positioning mechanisms are installed between the load-bearing platform and the base, making positioning more stable and reliable. Four load cells are installed between the load-bearing platform and the base to reduce the impact force on individual load cells and prevent damage to the load cells due to excessive impact force.

[0027] Compared with the prior art, the beneficial effects of this utility model are: (1) The platform weighing box structure of this patent application is specifically designed for steel ladles with rotating lugs. When the ladle is in place, it can effectively weigh the weight of the ladle and limit the tilt angle of the ladle, which is convenient for aligning with the argon blowing device; (2) The rotating lugs installed on the outer wall of the ladle move downward through the positioning guide groove to ensure that the lower end of the rotating lugs can be accurately supported on the load-bearing platform; (3) When subjected to impact, the buffer layer on the guide sleeve plays a buffering role; (4) The safety limiter is installed between the load-bearing platform and the base to prevent the two from separating from each other, and to prevent the load-bearing platform from shifting and tilting, which plays a safety protection role; (5) The bottom surface of the upper positioning groove and the bottom surface of the lower positioning groove are both convex spherical structures, which enable the load-bearing platform to automatically adjust to the balance position after being impacted, ensuring that the entire load-bearing platform accurately returns to the initial position by the weight of the ladle after the horizontal impact is eliminated, thus ensuring the accuracy of weighing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the working state of this utility model.

[0029] Figure 2 This is a schematic diagram of the structure of this utility model.

[0030] Figure 3 This is a structural diagram of the positioning mechanism of this utility model.

[0031] Figure 4 This is a structural diagram of the safety limiter of this utility model.

[0032] Figure 5 This is a schematic diagram of the bottom surface of the load-bearing platform of this utility model.

[0033] Figure 6 This is a connection diagram of the weighing sensor for Embodiment 2 of this utility model.

[0034] In the diagram: 1. Load-bearing platform, 2. Base, 3. Weighing sensor, 4. Positioning mechanism, 5. Outer stop, 6. Positioning guide groove, 7. Guide surface, 8. Extension, 9. Top block, 10. Top plane, 11. Bearing surface, 12. Rotating lug, 13. Steel ladle, 14. Guide sleeve, 15. Guide post, 16. Mounting hole, 17. Baffle, 18. Buffer layer, 19. Upper support, 20. Lower support, 21. Column, 22. Upper positioning groove, 23. Lower positioning groove, 24. Positioning seat, 25. Safety limiter, 26. Upper limit seat, 27. Lower limit seat, 28. Pin, 29. Lifting clearance, 30. Slot, 31. Socket. Detailed Implementation

[0035] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0036] Example 1: A platform-type weighing box structure (see...) Figures 1 to 5 The system includes a load-bearing platform 1 and a base 2, with the base 2 positioned below the load-bearing platform 1. Weighing sensors 3 and positioning mechanisms 4 are installed between the load-bearing platform 1 and the base 2. Two opposing positioning mechanisms 4 are installed between the load-bearing platform 1 and the base 2, and weighing sensors 3 are installed at each of the four corners between the load-bearing platform 1 and the base 2. The two positioning mechanisms 4 between the load-bearing platform 1 and the base 2 ensure more stable and reliable positioning. Four weighing sensors 3 are installed between the load-bearing platform 1 and the base 2 to reduce the impact force on individual weighing sensors 3 and prevent damage from excessive impact.

[0037] Two opposing outer stops 5 are provided around the periphery of the load-bearing platform 1. The two outer stops 5 are respectively placed on the front and rear sides of the load-bearing platform 1, and a positioning guide groove 6 is formed between the two outer stops 5 for the rotating lug 12 to pass through. An inclined guide surface 7 is provided on the upper edge of the opposing surfaces of the outer stops 5, so that the width of the upper end of the positioning guide groove 6 gradually decreases from top to bottom, which has a good guiding effect on the rotating lug 12. Each of the two outer stops 5 has an extension 8 that is close to each other at its upper end. The positioning guide groove 6 is placed between the two extensions 8, and the guide surface 7 is provided on the end face of the extension 8.

[0038] A top-aligning block 9 protrudes outward from the load-bearing platform 1, and a top-aligning plane 10 is provided on the top-aligning block 9. A bearing surface 11 is provided on the load-bearing platform 1, which is higher than the top-aligning plane 10, and the bearing surface 11 supports the rotating lug 12. The positioning mechanism 4 includes a guide sleeve 14 and a guide post 15, which are movably connected to achieve lateral positioning of the load-bearing platform 1 and the base 2. The guide sleeve 14 is installed on the load-bearing platform 1, and the guide post 15 is installed on the base 2. A mounting hole 16 is provided on the lower surface of the load-bearing platform 1, and the guide sleeve 14 is installed in the mounting hole 16. A baffle 17 is installed on the lower surface of the load-bearing platform 1, and the lower end of the guide sleeve 14 is supported on the baffle 17. A buffer layer 18 is provided on both the inner and outer walls of the guide sleeve 14. The buffer layer 18 is a high-strength vulcanized rubber layer, which plays a buffering role when subjected to impact.

[0039] After the load-bearing platform 1 supports the rotating lug 12, it is subjected to gravity and will move slightly downward. During this process, the guide sleeve 14 moves downward along the guide post 15 to prevent the load-bearing platform 1 from shifting laterally and to ensure the stability of the support. The baffle 17 limits the lower end of the guide sleeve 14 to prevent it from detaching from the load-bearing platform 1.

[0040] An upper support 19 is installed on the load-bearing platform 1, and a lower support 20 is installed on the base 2. The load cell 3 is installed on the lower support 20, and a support column 21 is installed between the load cell 3 and the upper support 19. The upper support 19 is secured to the lower surface of the load-bearing platform 1 with screws, and the lower support 20 is secured to the upper surface of the base 2 with screws. The arrangement of the upper support 19, lower support 20, and support column 21 ensures the reliable installation of the load cell 3, making weighing more accurate and reliable.

[0041] A safety limiter 25 is installed between the load-bearing platform 1 and the base 2. The safety limiter 25 includes an upper limit seat 26 and a lower limit seat 27. The upper limit seat 26 is fastened to the load-bearing platform 1, and the lower limit seat 27 is fastened to the base 2. A pin 28 connects the upper limit seat 26 and the lower limit seat 27. The pin 28 is horizontally positioned, and a lifting gap 29 is provided between the upper limit seat 26 and the lower limit seat 27. A slot 30 is provided on the lower limit seat 27 to form a U-shaped structure, and the upper limit seat 26 has a T-shaped structure. The lower part of the upper limit seat 26 is inserted into the slot 30. An insertion hole 31 is provided on the upper limit seat 26. The pin 28 is fastened to the lower limit seat 27 and passes through the insertion hole 31. The gap between the outer wall of the pin 28 and the inner wall of the insertion hole 31 forms the lifting gap 29. The diameter of the insertion hole 31 on the upper limit seat 26 is 5mm larger than the diameter of the pin 28. After the pin 28 passes through, a gap of 2.5mm is left around it to ensure that it plays a reliable limiting role without affecting the weighing accuracy and to prevent the load-bearing platform 1 from being tilted by collision.

[0042] The safety limiter 25 is installed between the load-bearing platform 1 and the base 2 to prevent them from separating from each other and to prevent the load-bearing platform 1 from shifting or tilting, thus playing a safety protection role. The lifting gap 29 provides space for the load-bearing platform 1 to move after being impacted, ensuring that the gravity on the load-bearing platform 1 is applied to the weighing sensor 3, thus ensuring the accuracy of weighing.

[0043] The ladle 13 with rotating lugs 12 is transferred to the load-bearing platform 1. Rotating lugs 12 are installed on both the left and right sides of the ladle 13. Therefore, two platform-type weighing boxes are required, corresponding to the rotating lugs 12. During weighing, the lower end of the suspended rotating lug 12 passes through the positioning guide groove 6, which guides the rotating lug 12, ensuring that its lower end is accurately supported on the load-bearing platform 1. The outward-extending top-aligning block 9 on the load-bearing platform 1 reaches the fixed seat in the direction of the ladle 13. When the ladle 13 tilts too much, the top-aligning plane 10 on the top block can straighten the ladle 13, preventing it from swaying or tilting, and ensuring that the argon blowing head is accurately aligned with the interface on the ladle 13. The weighing sensor 3 is used to weigh the ladle 13, and the positioning mechanism 4 positions the load-bearing platform 1 and the base 2, preventing lateral movement of the load-bearing platform 1 and the base 2, and ensuring the accuracy and reliability of the weighing. The safety limiter 25 is installed between the load-bearing platform 1 and the base 2 to prevent them from separating from each other and to prevent the load-bearing platform 1 from shifting or tilting, thus playing a safety protection role.

[0044] The platform-type weighing box structure of this patent application is specifically designed for steel ladle 13 with rotating lug 12. When the ladle is in place, it can effectively weigh the weight of the steel ladle 13 and limit the tilt angle of the steel ladle 13, which is convenient for aligning with the argon blowing device.

[0045] Example 2: A platform-type weighing box structure (see...) Figures 1 to 6 The system includes a load-bearing platform 1 and a base 2, with the base 2 positioned below the load-bearing platform 1. Weighing sensors 3 and positioning mechanisms 4 are installed between the load-bearing platform 1 and the base 2. Two opposing positioning mechanisms 4 are installed between the load-bearing platform 1 and the base 2, and weighing sensors 3 are installed at each of the four corners between the load-bearing platform 1 and the base 2. The two positioning mechanisms 4 between the load-bearing platform 1 and the base 2 ensure more stable and reliable positioning. Four weighing sensors 3 are installed between the load-bearing platform 1 and the base 2 to reduce the impact force on individual weighing sensors 3 and prevent damage from excessive impact.

[0046] Two opposing outer stops 5 are provided around the periphery of the load-bearing platform 1. The two outer stops 5 are respectively placed on the front and rear sides of the load-bearing platform 1, and a positioning guide groove 6 is formed between the two outer stops 5 for the rotating lug 12 to pass through. An inclined guide surface 7 is provided on the upper edge of the opposing surfaces of the outer stops 5, so that the width of the upper end of the positioning guide groove 6 gradually decreases from top to bottom, which has a good guiding effect on the rotating lug 12. Each of the two outer stops 5 has an extension 8 that is close to each other at its upper end. The positioning guide groove 6 is placed between the two extensions 8, and the guide surface 7 is provided on the end face of the extension 8.

[0047] A top-aligning block 9 protrudes outward from the load-bearing platform 1, and a top-aligning plane 10 is provided on the top-aligning block 9. A bearing surface 11 is provided on the load-bearing platform 1, which is higher than the top-aligning plane 10, and the bearing surface 11 supports the rotating lug 12. The positioning mechanism 4 includes a guide sleeve 14 and a guide post 15, which are movably connected to achieve lateral positioning of the load-bearing platform 1 and the base 2. The guide sleeve 14 is installed on the load-bearing platform 1, and the guide post 15 is installed on the base 2. A mounting hole 16 is provided on the lower surface of the load-bearing platform 1, and the guide sleeve 14 is installed in the mounting hole 16. A baffle 17 is installed on the lower surface of the load-bearing platform 1, and the lower end of the guide sleeve 14 is supported on the baffle 17. A buffer layer 18 is provided on both the inner and outer walls of the guide sleeve 14. The buffer layer 18 is a high-strength vulcanized rubber layer, which plays a buffering role when subjected to impact.

[0048] After the load-bearing platform 1 supports the rotating lug 12, it is subjected to gravity and will move slightly downward. During this process, the guide sleeve 14 moves downward along the guide post 15 to prevent the load-bearing platform 1 from shifting laterally and to ensure the stability of the support. The baffle 17 limits the lower end of the guide sleeve 14 to prevent it from detaching from the load-bearing platform 1.

[0049] An upper support 19 is installed on the load-bearing platform 1, and a lower support 20 is installed on the base 2. The load cell 3 is installed on the lower support 20, and a support column 21 is installed between the load cell 3 and the upper support 19. The upper support 19 is secured to the lower surface of the load-bearing platform 1 with screws, and the lower support 20 is secured to the upper surface of the base 2 with screws. The arrangement of the upper support 19, lower support 20, and support column 21 ensures the reliable installation of the load cell 3, making weighing more accurate and reliable.

[0050] An upper positioning groove 22 is provided on the upper support 19. The bottom surface of the upper positioning groove 22 has an outward convex spherical structure. The upper end of the column 21 is supported on the bottom surface of the upper positioning groove 22. A positioning seat 24 is installed on the load cell 3. A lower positioning groove 23 is provided on the lower end surface of the column 21. The bottom surface of the lower positioning groove 23 has an outward convex spherical structure. The positioning seat 24 is supported on the bottom surface of the lower positioning groove 23.

[0051] To ensure weighing accuracy, the load-bearing platform 1 needs to accurately return to its initial position after being subjected to impact. Therefore, the load cell 3 and the loading connection device must have excellent recovery performance. In this design, the bottom surfaces of both the upper positioning groove 22 and the lower positioning groove 23 are convex spherical structures, allowing the load-bearing platform 1 to automatically adjust to a balanced position after being subjected to impact. This ensures that the entire load-bearing platform 1 accurately returns to its initial position under the weight of the ladle 13 after the horizontal impact is eliminated, perfectly meeting the application requirements of the electronic scale in this project and demonstrating excellent performance.

[0052] A safety limiter 25 is installed between the load-bearing platform 1 and the base 2. The safety limiter 25 includes an upper limit seat 26 and a lower limit seat 27. The upper limit seat 26 is fastened to the load-bearing platform 1, and the lower limit seat 27 is fastened to the base 2. A pin 28 connects the upper limit seat 26 and the lower limit seat 27. The pin 28 is horizontally positioned, and a lifting gap 29 is provided between the upper limit seat 26 and the lower limit seat 27. A slot 30 is provided on the lower limit seat 27 to form a U-shaped structure, and the upper limit seat 26 has a T-shaped structure. The lower part of the upper limit seat 26 is inserted into the slot 30. An insertion hole 31 is provided on the upper limit seat 26. The pin 28 is fastened to the lower limit seat 27 and passes through the insertion hole 31. The gap between the outer wall of the pin 28 and the inner wall of the insertion hole 31 forms the lifting gap 29. The diameter of the insertion hole 31 on the upper limit seat 26 is 5mm larger than the diameter of the pin 28. After the pin 28 passes through, a gap of 2.5mm is left around it to ensure that it plays a reliable limiting role without affecting the weighing accuracy and to prevent the load-bearing platform 1 from being tilted by collision.

[0053] The safety limiter 25 is installed between the load-bearing platform 1 and the base 2 to prevent them from separating from each other and to prevent the load-bearing platform 1 from shifting or tilting, thus playing a safety protection role. The lifting gap 29 provides space for the load-bearing platform 1 to move after being impacted, ensuring that the gravity on the load-bearing platform 1 is applied to the weighing sensor 3, thus ensuring the accuracy of weighing.

[0054] The ladle 13 with rotating lugs 12 is transferred to the load-bearing platform 1. Rotating lugs 12 are installed on both the left and right sides of the ladle 13. Therefore, two platform-type weighing boxes are required, corresponding to the rotating lugs 12. During weighing, the lower end of the suspended rotating lug 12 passes through the positioning guide groove 6, which guides the rotating lug 12, ensuring that its lower end is accurately supported on the load-bearing platform 1. The outward-extending top-aligning block 9 on the load-bearing platform 1 reaches the fixed seat in the direction of the ladle 13. When the ladle 13 tilts too much, the top-aligning plane 10 on the top block can straighten the ladle 13, preventing it from swaying or tilting, and ensuring that the argon blowing head is accurately aligned with the interface on the ladle 13. The weighing sensor 3 is used to weigh the ladle 13, and the positioning mechanism 4 positions the load-bearing platform 1 and the base 2, preventing lateral movement of the load-bearing platform 1 and the base 2, and ensuring the accuracy and reliability of the weighing. The safety limiter 25 is installed between the load-bearing platform 1 and the base 2 to prevent them from separating from each other and to prevent the load-bearing platform 1 from shifting or tilting, thus playing a safety protection role.

[0055] The platform-type weighing box structure of this patent application is specifically designed for steel ladle 13 with rotating lug 12. When the ladle is in place, it can effectively weigh the weight of the steel ladle 13 and limit the tilt angle of the steel ladle 13, which is convenient for aligning with the argon blowing device.

[0056] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A platform-type weighing box structure, characterized in that, It includes a load-bearing platform and a base, with a weighing sensor and a positioning mechanism installed between the load-bearing platform and the base. The load-bearing platform has an outwardly extending top aligning block, and the top aligning block has a top aligning plane. The positioning mechanism includes a guide sleeve and a guide column, which are movably connected to achieve lateral positioning of the load-bearing platform and the base.

2. The platform-type weighing box structure according to claim 1, characterized in that, Two opposing outer stops are set around the load-bearing platform, and a positioning guide groove is formed between the two outer stops for the rotating lug to pass through.

3. The platform-type weighing box structure according to claim 2, characterized in that, An inclined guide surface is provided on the upper edge of the outer stop head opposite the surface, so that the width of the upper end of the positioning guide groove gradually decreases from top to bottom.

4. The platform-type weighing box structure according to claim 1, characterized in that, The guide sleeve is installed on the load-bearing platform, and the guide post is installed on the base. The load-bearing platform is provided with mounting holes, and the guide sleeve is installed in the mounting holes. A baffle is installed on the load-bearing platform, and the lower end of the guide sleeve is supported on the baffle.

5. The platform-type weighing box structure according to claim 1, characterized in that, A buffer layer is provided on both the inner and outer walls of the guide sleeve.

6. The platform-type weighing box structure according to claim 1, characterized in that, An upper support is installed on the load-bearing platform, a lower support is installed on the base, the load cell is installed on the lower support, and a support column is installed between the load cell and the upper support.

7. The platform-type weighing box structure according to claim 6, characterized in that, An upper positioning groove is provided on the upper support, and the bottom surface of the upper positioning groove has an outward convex spherical structure. The upper end of the column is supported on the bottom surface of the upper positioning groove. A positioning seat is installed on the load cell, and a lower positioning groove is provided on the lower end surface of the column. The bottom surface of the lower positioning groove has an outward convex spherical structure. The positioning seat is supported on the bottom surface of the lower positioning groove.

8. The platform-type weighing box structure according to claim 1, characterized in that, A safety limiter is installed between the load-bearing platform and the base. The safety limiter includes an upper limit seat and a lower limit seat, and a connecting pin is connected between the upper limit seat and the lower limit seat. A lifting clearance is set between the upper limit seat and the lower limit seat.

9. A platform-type weighing box structure according to claim 8, characterized in that, The lower limit seat has a slot forming a U-shaped structure, and the upper limit seat has a T-shaped structure. The lower part of the upper limit seat is inserted into the slot. The upper limit seat has a socket. The pin is fastened to the lower limit seat. The pin passes through the socket. The gap between the outer wall of the pin and the inner wall of the socket forms the lifting gap.

10. A platform-type weighing box structure according to any one of claims 1 to 9, characterized in that, Two opposing positioning mechanisms are installed between the load-bearing platform and the base, and load cells are installed at the four corners between the load-bearing platform and the base.

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