A trolley rapid switching positioning device
By combining magnetic polarity adsorption and threaded rod limiting structure, the problems of low switching efficiency, poor accuracy and insufficient stability of traditional trolley positioning devices are solved, realizing fast, accurate and stable trolley positioning, and adapting to the needs of various trolley specifications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU RUNYI PACKAGING PROD CO LTD
- Filing Date
- 2025-09-26
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional trolley positioning devices suffer from low switching efficiency, poor positioning accuracy, insufficient structural stability, and weak versatility, making it difficult to meet the demands of high-precision and flexible production.
By employing the opposite polarity adsorption of the first and second adsorption magnets, combined with the threaded engagement of the threaded rod and the limiting ring, a three-dimensional limiting structure is formed, enabling rapid positioning and precise fine-tuning of the trolley.
It significantly improves the efficiency of trolley switching, ensures positioning accuracy and stability, is applicable to trolleys of various specifications, simplifies the operation process, and adapts to the needs of flexible production.
Smart Images

Figure CN224589993U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of trolley positioning equipment, specifically a trolley quick switching positioning device. Background Technology
[0002] In industrial production lines, warehousing and logistics transfer scenarios, trolleys are the core equipment for carrying materials. The ease and accuracy of their positioning directly determine the efficiency of production flow. Currently, the mainstream trolley positioning methods mostly rely on mechanical pin locking or manual marking calibration. These methods have obvious limitations: mechanical pins require manual alignment of the pin holes. When frequently switching between trolleys of different sizes, the pin positions need to be repeatedly disassembled and adjusted, making the operation cumbersome. A single switch often takes 3 to 5 minutes, which seriously slows down the production rhythm. Manual calibration relies on the operator's experience, and the positioning error is usually 5 to 10 mm, which is difficult to meet the requirements of high-precision production.
[0003] In addition, the structural stability of existing positioning devices is generally insufficient. Traditional devices mostly use a single contact point for fixation. After the trolley moves into place carrying heavy materials, the positioning point is easily offset due to vibration or external collision. This may not only cause material spillage and loss, but also cause equipment collision accidents, posing significant safety hazards. At the same time, some positioning devices lack versatility. Special positioning components need to be equipped for trolleys with different wheelbases and widths, which increases the cost of equipment procurement and maintenance and makes it difficult to meet the diverse needs of flexible production. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The purpose of this utility model is to provide a trolley quick switching positioning device to solve the problems of low switching efficiency, poor positioning accuracy, insufficient structural stability and weak versatility of traditional trolley positioning devices mentioned in the background art.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a trolley quick switching and positioning device, comprising a base, four first mounting seats fixedly disposed on the upper part of the base, an insertion slot fixedly disposed on the upper part of each first mounting seat, a first adsorption magnet fixedly disposed on the lower inner side of each first mounting seat, a first limiting ring fixedly disposed on the side of each first mounting seat, a first threaded rod movably disposed on the inner side of each first limiting ring, the first threaded rod penetrating the first mounting seat, a thread corresponding to the first threaded rod being disposed on the inner side of the first limiting ring, a first adjusting handle fixedly disposed in front of the first threaded rod, and a mounting rod movably disposed on the first mounting seat.
[0008] Preferably, a second adsorption magnet is fixedly disposed below the mounting rod, and a second mounting base is fixedly disposed above the mounting rod, with a first adsorption magnet also disposed on the inner side of the second mounting base.
[0009] Preferably, a first stop is fixedly provided on the right side of the mounting rod, and a second stop is fixedly provided in front of the mounting rod, with different mounting rods fixedly connected to the two sides of the first stop and the second stop.
[0010] Preferably, a second limiting ring is fixedly provided at the front of the second mounting base, a second threaded rod is movably provided on the inner side of the second limiting ring, and a second adjusting handle is fixedly provided on the other side of the second threaded rod.
[0011] Preferably, the second threaded rod passes through the second mounting base, and the inner side of the second limiting ring is provided with a thread corresponding to the second threaded rod.
[0012] Preferably, the upper surface of the first adsorption magnet has opposite magnetic poles to the lower surface of the second adsorption magnet.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. The quick-switching positioning device of this trolley achieves quick positioning and initial fixation of the mounting rod and the first mounting seat by the opposite pole adsorption of the first and second adsorption magnets. Basic positioning can be completed without complicated operation, which greatly improves the switching efficiency.
[0015] 2. The trolley quick-switching positioning device, through the threaded engagement of the first threaded rod and the first limiting ring, and the threaded engagement of the second threaded rod and the second limiting ring, can make precise fine adjustments to the mounting rod and the trolley respectively, ensuring positioning accuracy and meeting the positioning requirements of trolleys of different specifications.
[0016] 3. The trolley quick-switching positioning device forms a three-dimensional limiting structure through the combination of the first and second stop levers, which blocks and limits the trolley from multiple directions, effectively preventing the trolley from shifting during operation and improving the stability of the device.
[0017] 4. This trolley quick-switching positioning device, through its compact overall structural design and coordinated operation of all components, not only ensures the accuracy and stability of positioning, but also simplifies the switching operation process, making it suitable for trolley quick positioning needs in various scenarios. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a three-dimensional structural diagram of the base of this utility model;
[0020] Figure 3 This is a three-dimensional structural diagram of the mounting rod of this utility model;
[0021] Figure 4 This utility model Figure 3 A magnified structural diagram showing a partial detail at point A in the middle.
[0022] In the diagram: 1. Base; 2. First mounting seat; 3. Insertion slot; 4. First magnetic magnet; 5. First limiting ring; 6. First threaded rod; 7. First adjusting handle; 8. Mounting rod; 9. Second magnetic magnet; 10. Second mounting seat; 11. First stop bar; 12. Second stop bar; 13. Second limiting ring; 14. Second threaded rod; 15. Second adjusting handle. Detailed Implementation
[0023] 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 protection scope of the present utility model.
[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a trolley quick switching and positioning device, including a base 1, four first mounting seats 2 are fixedly arranged on the top of the base 1, an insertion groove 3 is fixedly arranged on the top of the first mounting seat 2, a first adsorption magnet 4 is fixedly arranged on the lower inner side of the first mounting seat 2, a first limiting ring 5 is fixedly arranged on the side of the first mounting seat 2, a first threaded rod 6 is movably arranged on the inner side of the first limiting ring 5, the first threaded rod 6 passes through the first mounting seat 2, the inner side of the first limiting ring 5 is provided with a thread corresponding to the first threaded rod 6, a first adjusting handle 7 is fixedly arranged in front of the first threaded rod 6, and a mounting rod 8 is movably arranged on the first mounting seat 2.
[0025] A second magnetic magnet 9 is fixedly installed below the mounting rod 8, and a second mounting base 10 is fixedly installed above the mounting rod 8. A first magnetic magnet 4 is also installed on the inner side of the second mounting base 10. A first stop bar 11 is fixedly installed on the right side of the mounting rod 8, and a second stop bar 12 is fixedly installed in front of the mounting rod 8. Different mounting rods 8 are fixedly connected to the sides of the first stop bar 11 and the second stop bar 12. First, the mounting rod 8 is inserted into the insertion slot 3 of the first mounting base 2. At this time, the first magnetic magnet 4 on the inner side of the first mounting base 2 and the second magnetic magnet 9 below the mounting rod 8 attract each other due to their opposite poles, thus achieving the initial fixation of the mounting rod 8. According to the trolley specifications, the first threaded rod 6 is rotated within the first limit ring 5 by rotating the first adjusting handle 7. The mounting rod 8 is then finely adjusted to the appropriate position using the thread transmission principle, thus completing the precise positioning of the mounting rod 8.
[0026] A second limiting ring 13 is fixedly installed at the front of the second mounting base 10. A second threaded rod 14 is movably installed on the inner side of the second limiting ring 13. A second adjusting handle 15 is fixedly installed on the other side of the second threaded rod 14. The second threaded rod 14 passes through the second mounting base 10. The inner side of the second limiting ring 13 is provided with a thread corresponding to the second threaded rod 14. The magnetic poles of the upper surface of the first adsorption magnet 4 and the lower surface of the second adsorption magnet 9 are opposite. When the trolley is placed on the device, the first adsorption magnet 4 on the inner side of the second mounting base 10 can engage with the metal parts at the bottom of the trolley. An adsorption force is generated to assist in the initial positioning of the trolley. Then, the second adjusting handle 15 is rotated to make the second threaded rod 14 rotate within the second limiting ring 13 and press against the side of the trolley, thus achieving the final fixation of the trolley. At the same time, the first stop rod 11 and the second stop rod 12 block the trolley from the sides and the front to prevent the trolley from shifting. When it is necessary to switch to a different specification of trolley, the second adjusting handle 15 and the first adjusting handle 15 are rotated in the opposite direction to release the fixation. After that, the mounting rod 8 and the trolley can be easily removed. After replacing the mounting component of the corresponding specification, the above steps are repeated to achieve quick switching and positioning.
[0027] Working principle: In use, first insert the mounting rod 8 into the insertion slot 3 of the first mounting base 2. At this time, the first adsorption magnet 4 on the inside of the first mounting base 2 and the second adsorption magnet 9 below the mounting rod 8 attract each other due to their opposite poles, thus initially fixing the mounting rod 8. According to the trolley specifications, by rotating the first adjusting handle 7, the first threaded rod 6 is driven to rotate within the first limiting ring 5. Using the thread transmission principle, the mounting rod 8 is finely adjusted to the appropriate position, completing the precise positioning of the mounting rod 8. When the trolley is placed on the device, the first adsorption magnet 4 on the inside of the second mounting base 10 can adhere to the bottom of the trolley. The metal parts generate an adsorption force to assist in the initial positioning of the trolley. Then, the second adjusting handle 15 is rotated to make the second threaded rod 14 rotate within the second limiting ring 13 and press against the side of the trolley, thus achieving the final fixation of the trolley. At the same time, the first stop rod 11 and the second stop rod 12 form a blockage on the trolley from the sides and the front to prevent the trolley from shifting. When it is necessary to switch to a different specification of trolley, the second adjusting handle 15 and the first adjusting handle 15 are rotated in the opposite direction to release the fixation. After that, the mounting rod 8 and the trolley can be easily removed. After replacing the mounting component of the corresponding specification, the above steps are repeated to achieve quick switching and positioning.
[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.
Claims
1. A quick switching positioning device for a trolley, comprising a base (1), characterized in that: Four first mounting seats (2) are fixedly provided on the top of the base (1). An insertion slot (3) is fixedly provided on the top of the first mounting seat (2). A first adsorption magnet (4) is fixedly provided on the lower inner side of the first mounting seat (2). A first limiting ring (5) is fixedly provided on the side of the first mounting seat (2). A first threaded rod (6) is movably provided on the inner side of the first limiting ring (5). The first threaded rod (6) passes through the first mounting seat (2). A thread corresponding to the first threaded rod (6) is provided on the inner side of the first limiting ring (5). A first adjusting handle (7) is fixedly provided in front of the first threaded rod (6). An mounting rod (8) is movably provided on the first mounting seat (2).
2. The quick switching positioning device for a trolley according to claim 1, characterized in that: A second adsorption magnet (9) is fixedly provided below the mounting rod (8), and a second mounting base (10) is fixedly provided above the mounting rod (8). A first adsorption magnet (4) is also provided on the inner side of the second mounting base (10).
3. The quick switching positioning device of a trolley according to claim 2, characterized in that: A first stop (11) is fixedly provided on the right side of the mounting rod (8), and a second stop (12) is fixedly provided in front of the mounting rod (8). Different mounting rods (8) are fixedly connected to the two sides of the first stop (11) and the second stop (12).
4. The quick switching positioning device of a bogie according to claim 3, characterized in that: A second limiting ring (13) is fixedly provided at the front of the second mounting base (10), a second threaded rod (14) is movably provided on the inner side of the second limiting ring (13), and a second adjusting handle (15) is fixedly provided on the other side of the second threaded rod (14).
5. The quick change positioning device for a pallet according to claim 4, wherein: The second threaded rod (14) passes through the second mounting base (10), and the inner side of the second limiting ring (13) is provided with a thread corresponding to the second threaded rod (14).
6. The quick change positioning device for a pallet according to claim 5, wherein: The upper surface of the first adsorption magnet (4) has opposite magnetic poles to the lower surface of the second adsorption magnet (9).