Stacker crane loading platform floating weighing mechanism

Abstract

This utility model provides a floating weighing mechanism for a stacker crane's loading platform, including a fork mounting plate installed at the bottom of the telescopic forks. Weighing sensors are connected to the lower ends of the fork mounting plate via floating connection mechanisms that compensate for alignment errors. The end of the weighing sensor away from the floating connection mechanism is detachably mounted on the loading platform by bolts. Compared with the existing tumbler-like outrigger support method, this mechanism replaces the swing support with a floating connection, solving the problem of random positional displacement of the forks caused by outrigger swing. At the same time, it abandons the rigid bolt fixing method of the sensor, uses the floating structure to eliminate assembly stress, reduces weighing inaccuracies, has low installation difficulty, and basically requires no adjustment after installation. Furthermore, the point contact structure of the dome cap can reduce stress concentration and prevent the mechanism from jamming. The symmetrical sensor layout achieves uniform load distribution, further ensuring the accuracy of the weighing results.

Description

Technical Field

[0001] This utility model relates to the field of logistics equipment technology, and in particular to a floating weighing mechanism for a stacker crane loading platform. Background Technology

[0002] Stacker crane loading platform weighing refers to a technical solution that integrates weighing functionality into the loading platform (the component used to carry and retrieve goods) of the stacker crane, the core equipment of automated warehouses, to achieve real-time detection, recording, and control of goods weight. Its core function is to merge the "goods handling" and "weight verification" processes, solving the efficiency bottleneck of the traditional "handling first, weighing later" approach in warehousing, while simultaneously ensuring the safety and accuracy of warehousing operations.

[0003] Stacker crane loading platforms typically use cantilever beam load cells for weighing. Current installation methods generally involve fixing the cable outlet to a fixed position and using a self-righting leg for support at the other end. Figure 1 and Figure 2 As shown, since the load cell of the loading platform is installed between the telescopic forks and the loading platform, if the existing tumbler support method is used, the forks may experience random positional shifts during the movement of the loading platform due to the large swing angle of the tumbler support, which will affect the accuracy of picking and placing goods. In severe cases, it may collide with the shelf. Furthermore, the load cell is rigidly installed with bolts, which may cause inaccurate weighing due to the stress generated when the bolts are tightened.

[0004] Therefore, this utility model proposes a floating weighing mechanism for the stacker crane loading platform to solve the problems existing in the prior art. Utility Model Content

[0005] To address the aforementioned issues, this utility model proposes a floating weighing mechanism for the stacker crane's loading platform. This addresses the problems of existing technologies that use tumbler-like outriggers for support, where the forks may experience random positional shifts during platform movement due to the large swing angle of the outriggers, affecting the accuracy of loading and unloading goods and potentially causing collisions with the rack in severe cases. Furthermore, the use of bolts to rigidly install the weighing sensors may lead to inaccurate weighing due to stress generated during bolt tightening.

[0006] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: including a fork mounting plate installed at the bottom of the telescopic fork, and a weighing sensor connected to both ends of the fork mounting plate through a floating connection mechanism that functions to compensate for alignment errors. The end of the weighing sensor away from the floating connection mechanism is detachably mounted on the loading platform by bolts, and the weighing sensor and the loading platform are adaptively installed through a shim.

[0007] A further improvement is that the floating connection mechanism includes a floating female head bolted to the bottom of the fork mounting plate and a floating male head bolted to the load cell. The floating female head is provided with a groove for the floating male head to be assembled into the floating female head.

[0008] A further improvement is that the slide is composed of an upper through groove and a lower through groove. The upper through groove and the lower through groove are connected to form a complete slide that passes through the floating female head. The inner side of the floating female head, i.e. the position of the slide, is an open structure for the floating male head to slide into the floating female head.

[0009] A further improvement is that the floating male head is integrally formed by an adjusting bolt, a central column, and a dome cap. The diameter of the central column matches the diameter of the lower through groove, with a gap of 0.5-1mm. The diameter of the dome cap matches the diameter of the upper through groove, with a gap of 0.5-1mm. The gaps between the two are consistent, which plays a role in compensating for alignment errors.

[0010] A further improvement is that the top of the dome cap has a dome structure, which is used to reduce the contact area with the bottom of the fork mounting plate, reduce stress impact, and avoid jamming.

[0011] A further improvement is that the two ends of the bottom of the fork mounting plate are respectively connected to the two weighing sensors through two sets of mirror-symmetrical floating connection mechanisms. The two weighing sensors are mirror-symmetrical, with the axis of symmetry being the vertical line of the center of the fork mounting plate, and the two weighing sensors are set at the same horizontal level.

[0012] The beneficial effects of this utility model are as follows: 1. Compared with the existing tumbler-style outrigger support method, this mechanism replaces the swing support with a floating connection, which solves the problem of random positional deviation of the forks caused by the swing of the outriggers. At the same time, it abandons the rigid bolt fixing method of the sensor, uses the floating structure to eliminate assembly stress, reduce weighing inaccuracies, and ensure reliable weighing results.

[0013] 2. The clearance fit design of the floating connection mechanism can adaptively compensate for the alignment deviation caused by the movement of the forks. It is easy to install and basically does not require adjustment after installation. The point contact structure of the dome cap can reduce stress concentration and prevent the mechanism from jamming. The symmetrical sensor layout can achieve uniform load distribution, further reduce weighing error and ensure the accuracy of weighing results. Attached Figure Description

[0014] Figure 1 This is the first installation structure diagram for the existing roly-poly toy support legs.

[0015] Figure 2 This is the second installation structure diagram for the existing roly-poly toy support legs.

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 4 This is a side view of the fork mounting plate and floating connection mechanism of this utility model.

[0018] Figure 5 This is a front view of the fork mounting plate and floating connection mechanism of this utility model.

[0019] Figure 6 This is a utility model Figure 5 Enlarged view of point A in the middle.

[0020] The components include: 1. Telescopic forks; 2. Fork mounting plate; 3. Floating connection mechanism; 31. Floating female head; 32. Floating male head; 321. Adjusting bolt; 322. Center column; 323. Dome cap; 33. Slide groove; 331. Upper through groove; 332. Lower through groove; 4. Weighing sensor; 5. Loading platform; 6. Gasket. Detailed Implementation

[0021] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0022] according to Figure 3-6 As shown, this embodiment proposes a solution: a floating weighing mechanism for the stacker crane loading platform, including a fork mounting plate 2 installed at the bottom of the telescopic fork 1. Weighing sensors 4 are connected to the lower ends of the fork mounting plate 2 through a floating connection mechanism 3 that compensates for alignment errors. The end of the weighing sensor 4 away from the floating connection mechanism 3 is detachably mounted on the loading platform 5 by bolts, and the weighing sensor 4 and the loading platform 5 are adaptively installed through a shim 6.

[0023] In this implementation case, after the telescopic fork 1 carries the goods, the force is transmitted to the weighing sensor 4 through the floating connection mechanism 3 at both ends. Compared with the existing tumbler-leg support method, this structure replaces the swing support with a floating connection. Through the action of the floating connection mechanism 3 at both ends, the device adopts a high-precision floating joint connection method, which can ensure the weighing accuracy and solve the problems of large fork displacement deviation and inaccurate weighing caused by bolt rigid connection in the existing tumbler-leg connection method.

[0024] The floating connection mechanism 3 includes a floating female head 31 bolted to the bottom of the fork mounting plate 2 and a floating male head 32 bolted to the load cell 4. The floating female head 31 is provided with a groove 33 for the floating male head 32 to be assembled into the floating female head 31. The groove 33 is composed of an upper through groove 331 and a lower through groove 332. The upper through groove 331 and the lower through groove 332 are connected to form a complete groove 33 that runs through the floating female head 31. The inner side of the floating female head 31, i.e., the location of the groove 33, is an open structure for the floating male head 32 to slide into the floating female head 31. The floating female head 31 is fixed to the fork mounting plate 2 by bolts. The floating male head 32 is connected to the load cell 4. The central column 322 and the dome cap 323 of the male head are respectively connected to the lower through groove 332 and the upper through groove 331 of the female head. This makes the overall installation of the floating connection mechanism 3 easy and requires almost no adjustment after installation. It abandons the method of directly fixing the sensor with rigid bolts and eliminates assembly stress through the floating structure.

[0025] The floating male head 32 is integrally formed by adjusting bolt 321, center column 322 and dome cap 323. The diameter of the center column 322 matches the diameter of the lower through groove 332 with a gap of 0.5-1mm. The diameter of the dome cap 323 matches the diameter of the upper through groove 331 with a gap of 0.5-1mm. The gaps between the two are consistent, which can compensate for the alignment error. The center column 322 and dome cap 323 of the male head form a 0.5-1mm gap fit with the lower through groove 332 and upper through groove 331 of the female head, respectively, to ensure that there is no jamming between the floating male head 32 and the floating female head 31. The floating connection can ensure the position accuracy of the forks, avoid large positional deviations, and improve the stability of equipment operation.

[0026] The top of the dome cap 323 has a dome structure, which is used to reduce the contact area with the bottom of the fork mounting plate 2, reduce stress, and avoid jamming. Through the dome structure of the dome cap 323, the contact area is reduced compared to the flat contact, thereby avoiding jamming.

[0027] The two ends of the bottom of the fork mounting plate 2 are connected to two load cells 4 by two sets of mirror-symmetrical floating connection mechanisms 3. The two load cells 4 are mirror-symmetrical, with the axis of symmetry being the vertical line of the center of the fork mounting plate 2. The two load cells 4 are set at the same level. The two cantilever beam load cells 4 are mirror-arranged with the vertical line of the center of the fork mounting plate 2 as the axis of symmetry and maintain the same horizontal height. This can limit the telescopic fork 1 from leaving the slide groove 33 in the fork extension direction, further reducing the risk of inaccurate weighing.

[0028] The above embodiments disclose a floating weighing mechanism for a stacker crane's loading platform. In this mechanism, a floating male head 32 is inserted into a floating female head 31 via a sliding groove 33. The floating female head 31 is fixed to the fork mounting plate 2 with bolts. The floating male head 32 is connected to a load cell 4. The central column 322 and the dome cap 323 of the male head are respectively connected to the lower through groove 332 and the upper through groove 331 of the female head. This design reduces the overall installation difficulty of the floating connection mechanism 3, requiring minimal adjustment after installation. It eliminates the need for rigid bolts to directly fix the sensor, and the floating structure alleviates assembly stress, ensuring that there is no jamming between the floating male head 32 and the floating female head 31. The use of floating connection can ensure the positional accuracy of the forks, avoid large positional deviations, and improve the stability of equipment operation. The dome structure point of the dome cap 323 reduces the contact area compared to planar contact, further preventing jamming. After the telescopic fork 1 carries the goods, the force is transmitted to the weighing sensor 4 through the floating connection mechanism 3 at both ends. Compared with the existing tumbler support method, this structure replaces the swing support with a floating connection. Through the action of the floating connection mechanism 3 at both ends, the weighing accuracy can be guaranteed, solving the problems of large fork displacement deviation and weighing inaccuracy caused by bolt rigid connection in the existing tumbler support method.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A floating weighing mechanism for a stacker crane loading platform, comprising a fork mounting plate (2) installed at the bottom of the telescopic forks (1), characterized in that: Weighing sensors (4) are connected to the lower ends of the fork mounting plate (2) via floating connection mechanisms (3) that compensate for alignment errors. The end of the weighing sensor (4) away from the floating connection mechanism (3) is detachably mounted on the loading platform (5) by bolts, and the weighing sensor (4) and the loading platform (5) are adapted to each other by a gasket (6).

2. The floating weighing mechanism for a stacker crane loading platform according to claim 1, characterized in that: The floating connection mechanism (3) includes a floating female head (31) bolted to the bottom of the fork mounting plate (2) and a floating male head (32) bolted to the load cell (4). The floating female head (31) is provided with a groove (33) for the floating male head (32) to be assembled into the floating female head (31).

3. The floating weighing mechanism for a stacker crane loading platform according to claim 2, characterized in that: The slide (33) is composed of an upper through groove (331) and a lower through groove (332). The upper through groove (331) and the lower through groove (332) are connected to form a complete slide (33) and pass through the floating female head (31). The inner side of the floating female head (31), i.e. the position of the slide (33), is an open structure for the floating male head (32) to slide into the floating female head (31).

4. The floating weighing mechanism for a stacker crane loading platform according to claim 3, characterized in that: The floating male head (32) is integrally formed by adjusting bolt (321), center post (322) and dome cap (323). The diameter of the center post (322) matches the diameter of the lower through groove (332) and leaves a gap of 0.5-1mm. The diameter of the dome cap (323) matches the diameter of the upper through groove (331) and leaves a gap of 0.5-1mm. The gaps between the two are consistent, which plays a role in compensating for alignment errors.

5. A floating weighing mechanism for a stacker crane loading platform according to claim 4, characterized in that: The top of the dome cap (323) is a dome structure, which is used to reduce the contact area with the bottom of the fork mounting plate (2), reduce stress effects, and avoid jamming.

6. A floating weighing mechanism for a stacker crane loading platform according to claim 1, characterized in that: The two ends of the bottom of the fork mounting plate (2) are connected to two weighing sensors (4) respectively through two sets of mirror-symmetrical floating connection mechanisms (3). The two weighing sensors (4) are mirror-symmetrical, with the axis of symmetry being the vertical line of the center of the fork mounting plate (2), and the two weighing sensors (4) are set at the same level.

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