Upper pin joint guiding and fixing device for modularized compartment transportation

Abstract

The invention discloses an upper pin joint guiding and fixing device for modularized carriage transportation, belongs to the technical field of logistics transportation equipment, and is applied to a logistics transportation chassis for carrying multiple groups of detachable carriages. The problems that when an existing modularized compartment body is connected, accurate butt joint of pins and pin holes is difficult, steel plates around the holes are prone to being scratched, vertical shaking is prone to occurring during travelling bumping, and travelling safety is seriously affected are solved. According to the device, the pins and the pin holes are arranged independently or cooperatively through the check blocks, the check block contact surfaces and the splayed guide plates on the basis that the device is integrally borne by the automobile frame and a matching structure of the chassis and the carriage body sliding frame is reserved, so that the pins can be accurately inserted into the holes without manual adjustment in the carriage body connecting process; according to the modular car body upper connection structure, the detachable car body I, the detachable car body II and the detachable car body III can be freely connected and combined, the original bearing path of the car frame is not changed, the structural stress is reasonable, the operation efficiency and the transportation stability of the modular car body upper connection are greatly improved, and the modular car body upper connection structure has good industrial practicability and popularization value.

Description

Technical Field

[0001] This invention relates to the field of logistics transportation equipment technology, specifically to an upper pin-connection guide and fixing device for modular box-type transport, which is suitable for the upper connection, positioning and fixing of multiple detachable boxes on a logistics transport chassis, and is used in conjunction with the chassis bearing, lower sliding frame and upper sliding frame correction structure of the modular box-type transport device. Background Technology

[0002] The applicant's previously filed utility model patent, "A Modular Box Transport Device" (application number: 202522312915.2, application date: October 31, 2025), discloses a logistics transport chassis structure that carries multiple detachable boxes. Through the cooperation of the chassis lower slide and the box upper slide, the lower part of the box can be slid and corrected and loaded. It has the advantages of high transportation flexibility and high space utilization, and provides basic device support for the logistics transport of modular boxes. In the field of logistics and transportation, modular box transport devices are widely used due to their advantages of high transportation flexibility and high space utilization. Multiple detachable boxes can be connected and placed on the same logistics transport chassis according to transportation needs. The chassis relies on the vehicle beam to achieve overall load-bearing. The chassis is equipped with a lower sliding frame, and the box is equipped with a corresponding upper sliding frame to achieve sliding cooperation and correction between the box and the chassis. To ensure load-bearing stability, the device does not add elastic pad-type buffer structures. To improve the overall structural stability of multiple connected compartments, the industry typically uses ropes to secure the upper part of the compartments. However, this method has significant technical drawbacks in actual operation and transportation: First, it requires tedious manual work between the compartments; second, road bumps during travel can cause misalignment of the compartments, and the existing pin-connection structure lacks specific anti-detachment hole constraints, thus losing its upper securing effect and severely reducing the stability and safety of multi-compartment transportation; third, the existing securing structure lacks precise guide components and does not combine with stop block abutment structures to form a fixed limit, making it unsuitable for any connection and combination requirements of multiple detachable compartments, resulting in poor versatility. As a basic transportation device, the aforementioned modular box transport device also suffers from the technical shortcomings of upper fixing. It only achieves the lower positioning of the box and the chassis, and does not design a dedicated pin-connecting guide and stabilizing limiting structure for the upper connection between the boxes. As a result, the problems of pin insertion difficulty and box displacement due to bumping are still not solved in the actual modular box connection and transportation. This has become a key limiting factor for further improving the operation efficiency and transportation safety of this basic device. Current technologies for positioning structures connecting modular container bodies often lack precise guiding designs and fail to provide pin and pinhole limiting constraints for movement due to bumps. They also lack upper positioning optimization based on the chassis and container's sliding frame structure, and do not include matching stop blocks and contact surface abutment structures. These shortcomings fail to fundamentally solve the problems of difficult pin insertion and easy pin detachment, making it difficult to meet the high requirements of modular container body connection efficiency and transportation stability in the logistics and transportation sector. Therefore, designing an upper pin connection guiding and fixing device that enables precise pin insertion and provides stable constraints on the pinhole fit is crucial for improving the operational efficiency and transportation safety of modular container body transport devices. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an upper pin-connection guiding and fixing device for modular box transportation, which solves the technical problems of the cumbersome upper rope fixing of existing modular boxes, the difficulty in connecting the pins to the pin holes during pin connection, the easy scraping of the steel plates around the holes, and the forward and backward displacement of the box when the vehicle is bumpy. This device, as a complementary and optimized structure to the aforementioned "Modular Box Carrier Device," achieves precise guidance of pins into holes when connecting multiple sets of detachable boxes, while relying on the overall load-bearing capacity of the vehicle beam, without adding elastic pad structures, and retaining the chassis and box carriage cooperation structure. It also provides stable constraints on the fit between the pins and pin holes. This allows for any connection combination of detachable boxes 1, 2, and 3, improving the operational efficiency and transportation stability of the upper connection of the modular boxes. To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A modular box-type transport upper pin-connection guide and fixing device is applied to a logistics transport chassis that carries multiple detachable boxes. The chassis relies on the vehicle beam for overall load-bearing and has no elastic pad-type buffer structure. The chassis 1 is equipped with several lower sliding frames, and the detachable boxes are correspondingly equipped with upper sliding frames to achieve the lower sliding cooperation and correction between the chassis and the boxes. The device includes multiple detachable boxes, pins, pin holes, guide plates, blocks, and block contact surfaces. The multiple sets of detachable boxes are heavy-duty modular boxes with matching specifications, which can be arbitrarily connected and combined on the chassis according to transportation needs; the upper part of any set of detachable boxes is integrated with pins and / or pin holes. The pins and pin holes are rigid fit structures that are adapted to each other, and the fit between the two is not limited by the front and rear boxes or the vertical arrangement, and can be flexibly combined and matched according to the box connection requirements. The stop block is divided into baffle 1 and baffle 2, and the contact surface of the stop block is also divided into baffle contact surface 1 and baffle contact surface 2, both of which are rigid metal structures. The upper part of the adjacent detachable compartments is provided with corresponding stop blocks and stop block contact surfaces. When the compartments are connected, the rear end of the pin on the compartment and / or the stop block on the upper part of the compartment abuts against the contact surface of the stop block of the other compartment, forming a multi-element anti-detachment constraint in conjunction with the guide plate, further improving the stability of the pin connection positioning. When the contact surface of the stop block on the detachable compartment abuts against the stop block of the other compartment, there is no need to set the figure-eight flare or one of the flared surfaces of the guide plate at the contact surface of the stop block. The guide plate is a rigid metal structure, rigidly connected to the upper steel plate of the detachable body by welding or bolting, without any elastic cushioning structure between them. The guide plate is set around the pin hole on the upper part of the corresponding body, and can be arranged singly or in pairs beside the pin hole, with a bidirectional V-shaped flared structure with the center of the pin hole as the reference. The vertical flare provides a guiding channel for the pin to fall into the hole, and even if the pin has slight vertical misalignment, it can still slide into the pin hole along the flare. The horizontal flare provides a horizontal limit for the pin, preventing the pin from sliding out of the pin hole when the body moves backward or forward due to bumps, ensuring the stability of the pin hole fit. The pin resistance force and limiting force borne by the guide plate are directly transmitted to the body body, and finally the overall load is borne by the vehicle beam, without changing the original load-bearing path and function of the vehicle beam. Furthermore, the flared opening of the guide plate is larger than the pin's moving width, ensuring that the pin can be accurately guided through the flared opening even in any offset range, thus completely solving the problem of difficulty in inserting the pin into the hole. Furthermore, the pin is a conical rigid structure, and the pin hole is adapted to the pin rod body. The two are in clearance fit, which can effectively limit the front and rear displacement generated when the box body is bumpy during driving. Furthermore, the guide plate can be flexibly adjusted in installation position according to the arrangement of the pin holes and the specifications of the pins. It can be arranged individually or in pairs to adapt to the pin connection guidance requirements of different specifications of detachable boxes, and has strong versatility. This device is compatible with any connection combination of multiple detachable compartments: when adjacent detachable compartment 2 is lowered to connect with detachable compartment 1, the pin on the upper part of detachable compartment 1 abuts against the contact surface of the stop block on the upper part of detachable compartment 2, or / and cooperates with the set guide plate to accurately guide it into its pin hole; when detachable compartment 3 is lowered to connect with detachable compartment 1 or detachable compartment 2, the pin on the upper part of the front compartment abuts against the contact surface of the stop block on the upper part of detachable compartment 3, or / and cooperates with the set guide plate to guide it into its pin hole. The connection process does not require manual adjustment of the pin position, greatly improving work efficiency. The beneficial effects of this invention are: 1. Through the cooperative design of pins, pin holes and guide structures, combined with the lower cooperative structure of the chassis slide frame and the upper slide frame of the box body, this invention achieves precise insertion of pins into the holes without manual adjustment, completely solving the problem of pins being difficult to insert into the holes and easily touching and scraping the steel plate around the holes when connecting modular detachable boxes, and greatly improving the work efficiency of connecting the upper parts of multiple boxes; moreover, the cooperation between pins and pin holes has no front-back or top-bottom limitations, and can adapt to any connection combination of multiple sets of detachable boxes, with high flexibility. 2. The guide structure adopts a rigid abutment fit between the blocks and the contact surfaces of the blocks, or combines a bidirectional figure-eight flared structure on the guide plate, which can be arranged individually or in pairs next to the pin holes to achieve precise guidance into the holes and form a double anti-detachment limit constraint. It can stably limit the pin displacement caused by vehicle bumps and ensure the stability of the pin connection positioning of the upper part of the multi-body compartment. In conjunction with the chassis lower correction structure, it can achieve full-dimensional positioning of the upper and lower parts of the compartment, which greatly improves the overall transportation safety. 3. This device relies entirely on the vehicle frame for overall weighing and load-bearing. The pins, guide plates, blocks, and block contact surfaces are all rigid structures and are rigidly connected to the vehicle body. There are no elastic pads or other buffer structures. It does not change the original load-bearing path and function of the vehicle frame. The structure is reasonably stressed and has no problems such as elastic fatigue or aging. It has a long service life and low maintenance costs. 4. The pin and pin hole adopt a clearance fit to limit the displacement of the box body when it is bumpy during driving, which takes into account both the practicality of the device and the structural stability. Attached Figure Description

[0004] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention when the detachable compartment 2 is connected to the detachable compartment 1; Figure 2 This is a schematic diagram of the arrangement structure of pins (7) and pin holes (8) when multiple sets of compartments are connected according to the present invention; Figure 3 This is a schematic diagram of the second arrangement scheme of pins (7) and pin holes (8) when connecting multiple sets of compartments in this invention; Figure 4 This is a schematic diagram of the mating structure between the stop (10) and the stop contact surface (11) of the present invention; Figure 5 This is a schematic diagram of the fit structure between the guide plate (9), the stop block (10), the stop block contact surface (11), the pin hole (8), and the pin (7) of the present invention; Figure 6 This is a schematic diagram of the fit between the guide plate (9) and the pin hole (8) and the pin (7) of the present invention; Figure 7 This is a schematic diagram of the mating structure of the pin hole (8) and the pin (7) of the present invention. In the diagram: 1. Chassis; 2. Detachable body 1; 3. Detachable body 2; 4. Detachable body 3 (optional); 5. Lower slide frame; 6. Upper slide frame; 7. Pin; 8. Pin hole; 9. Guide plate; 10. Stop (baffle 1, baffle 2); 11. Stop contact surface (baffle contact surface 1, baffle contact surface 2). Detailed Implementation

[0005] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention. In the description of this invention, it should be clarified that: the logistics transportation chassis 1 relies on the automobile beam to achieve overall load-bearing; the chassis 1 is equipped with a lower slide 5; the detachable body is equipped with an upper slide 6; there are no elastic pad-like buffer structures between the chassis and the body, or between the bodies; multiple sets of detachable bodies are heavy-duty modular bodies with matching specifications, which can be arbitrarily connected and combined on the chassis 1 according to transportation needs; the stop block 10 is divided into a baffle 1 and a baffle 2; the stop block contact surface 11 is divided into a baffle contact surface 1 and a baffle contact surface 2; adjacent detachable bodies are correspondingly equipped with stop blocks 10 and stop block contact surfaces 11. This invention provides an upper pin-connected guide and fixing device for modular box transport. The core components include multiple sets of detachable boxes, conical rigid pins 7, round pin holes 8, figure-eight rigid guide plates 9, stop blocks 10, and stop block contact surfaces 11. The pins 7 are welded to the steel frame on the upper part of the box, and the pin holes 8 are opened on the steel plate / steel frame on the upper part of the box. At least two sets of pins 7 and / or pin holes 8 are evenly distributed on the upper part of any set of boxes. The rod body and hole diameter of the pins 7 and pin holes 8 are clearance fit, and the clearance value is controlled to be 2-5mm. The guide plates 9 can be arranged single or in pairs around the pin holes 8. 1. Installation and processing of core components A baffle 1 is welded to the rear end of the pin 7 on the upper part of the adjacent detachable body 1, and a baffle contact surface 1 is integrally formed at the corresponding position; a baffle 2 is welded to the upper part of the detachable body 2 at the position corresponding to the baffle 1, and a baffle contact surface 2 is integrally formed. The surfaces of the baffle 1 and the baffle 2, and the baffle contact surface 1 and the baffle contact surface 2 are all flattened to ensure the stability of the abutment fit; when the baffle 1 of the detachable body 2 abuts against the baffle contact surface 1 of the detachable body 1, the baffle contact surface 1 does not have an eight-shaped flared opening of the guide plate 9. 2. Pin-guided connection process for the body panels Single-group connection: The detachable box 1 is precisely placed on the logistics transportation chassis 1 by the sliding frame 5 at the bottom of the chassis 1 and the upper sliding frame 6 of the box itself. Then, the detachable box 2 is lowered to the top of the detachable box 1 by the lifting equipment for connection. During the gravity fall, the pin 7 at the top of the detachable box 1 first contacts the guide plate 9 outside the pin hole (8) at the top of the detachable box 2, and slides naturally into the pin hole 8 along the upper and lower V-shaped flared opening of the guide plate 9. At the same time, the baffle 1 of the detachable box 1 and the baffle contact surface 2 of the detachable box 2 abut against each other. There is no need to manually adjust the position of the pin and the box throughout the process, so as to avoid the pin 7 touching or scraping the steel plate around the pin hole 8. Multiple sets of connections: When the three detachable compartments are connected to either the first or second detachable compartment, the pin 7 on the upper part of the front compartment (the first or second detachable compartment) completes the same precise insertion process as described above through the guide plate 9 on the upper part of the third detachable compartment. At the same time, according to the compartment combination requirements, the corresponding stop 10 and the stop contact surface 11 are rigidly connected, realizing the arbitrary combination and connection of multiple detachable compartments. 3. The process of limiting vibrations caused by vehicle bumps. During driving, road bumps can cause slight misalignment and displacement of the detachable compartments after connection. At this time, pin 7 will slide slightly within a 2-5mm gap in pin hole 8. The left and right bidirectional V-shaped flares of guide plate 9 can also rigidly block the sliding pin 7. At the same time, the stop block 10 between the compartments and the stop block contact surface 11 maintain continuous rigid contact, forming a double rigid constraint, which completely prevents pin 7 from disengaging from pin hole 8 and ensures the stability of the pin connection positioning of the upper part of the multi-compartment. This structure, together with the lower slide frame 5 and upper slide frame 6 under the chassis 1 for correction and fixing, realizes the positioning constraint of the compartment in all dimensions, greatly improving the structural stability during transportation. 4. Device adaptation and adjustment For detachable bodies of different specifications, if the diameter of the pin 7 rod and the diameter of the pin hole 8 change, the original guide plate 9 can be disassembled and replaced with a guide plate 9 with a corresponding flared angle and length, or the installation position of the guide plate 9 can be adjusted by bolt tightening. Single or paired installation can be flexibly selected according to the actual arrangement of the pin holes 8 to adapt to the pin connection guidance requirements of different body specifications. At the same time, the fit between the pin 7 and the pin hole 8 can be flexibly adjusted in terms of the upper and lower arrangement according to the body connection requirements. The position of the stop block 10 and the stop block contact surface 11 can be flexibly welded and adjusted according to the body assembly without fixed limitations, further improving the versatility and adaptability of the device. There is no need to redesign and process the positioning structure for different body specifications, effectively reducing the cost of use. The above description is only used to illustrate the technical solution of the invention patent and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A top pin-connected guiding and fixing device for modular box-type transportation, applied to a logistics transportation chassis carrying multiple detachable boxes, characterized in that: The chassis (1) is supported by the automobile beam. The chassis (1) is provided with several sliding frames (5). The detachable body is provided with an upper sliding frame (6) that cooperates with the sliding frames (5). The device is characterized by including pins (7), pin holes (8) and a guide structure. Each set of detachable bodies has at least one set of pins (7) and / or pin holes (8) on its upper part. The pins (7) and pin holes (8) are fixed to the upper part of the body. The pins (7) and pin holes (8) are rigid fitting structures that are adapted to each other, and their fitting relationship is not limited by the connection sequence of the bodies or the vertical arrangement. The guide structure includes a rigid metal block (10). The pin (7) is formed by one or more combinations of the block contact surface (11), guide plate (9) and pin hole guide flaring area. The guide plate (9) is flared in a figure-eight shape with the center of the pin hole (8) as the reference. The pin hole guide flaring area is a flaring structure opened on the left and right sides of the rigid fit area between the pin (7) and the pin hole (8) and / or the pin insertion end of the pin hole (8). Its opening size is larger than the fit size of the rigid fit area. The pin (7) is guided by the pin hole guide flaring area, or / and the contact between the block (10) and the block contact surface (11), or / and the flaring of the guide plate (9), so that the pin (7) can be accurately inserted into the pin hole (8) when the body is misaligned.

2. The upper pin-connected guide and fixing device for modular box transportation according to claim 1, characterized in that: The stop block (10) is divided into baffle 1 and baffle 2, and the stop block contact surface (11) is divided into baffle contact surface 1 and baffle contact surface 2 respectively. The upper part of the adjacent detachable compartment is provided with a stop block (10) and a stop block contact surface (11). When the compartments are connected, the stop block (10) abuts against the stop block contact surface (11) of the other compartment, and the pin (7) and the pin hole (8) are precisely matched through contact guidance.

3. The upper pin-connected guide and fixing device for modular box transportation according to claim 2, characterized in that: When the contact surface (11) of the block on the detachable body abuts against the block (10) of another body, the contact surface (11) of the block does not need to be provided with the figure-eight flare of the guide plate (9), or one of the flare surfaces of the figure-eight flare does not need to be provided.

4. The upper pin-connected guide and fixing device for modular box transportation according to claim 1 or 2, characterized in that: The guide plate (9) is set around the pin hole (8) on the upper part of the corresponding detachable body, and can be arranged alone or in pairs on the side of the pin hole (8); the guide plate (9) has a figure-eight flared structure with the center of the pin hole (8) as the reference. The figure-eight flared is arranged in the vertical direction, which makes it easy for the pin (7) of the lowered body to be accurately introduced into the pin hole (8) from top to bottom or from bottom to top, and avoids the pin (7) from touching the steel plate around the pin hole (8) or deviating from the pin hole (8).

5. The upper pin-connected guide and fixing device for modular box transportation according to claim 2, characterized in that: The figure-eight flared opening of the guide plate (9) is arranged in the left and right directions along the center of the pin hole (8) to form a bidirectional figure-eight flared opening structure in both the upper and lower and left and right directions. When there is a left and right misalignment during the process of one compartment falling and connecting with another compartment, this structure can limit the pin (7) so that the pin (7) can be accurately inserted into the pin hole (8).

6. The upper pin-connected guide and fixing device for modular box transportation according to claim 2, characterized in that: The opening size of the figure-eight flared opening of the guide plate (9) is greater than the front and rear deviation distance of the pin (7), ensuring that the pin (7) can smoothly enter the pin hole (8) through the flared opening under any deviation state.

7. The upper pin-connected guide and fixing device for modular box transportation according to claim 1, characterized in that: The pin (7) is a conical rigid structure. The pin hole (8) is adapted to the rod of the pin (7). The pin (7) and the pin hole (8) are clearance fit, which limits the front and rear displacement generated when the detachable box is bumpy during driving.

8. The upper pin-connected guide and fixing device for modular box transportation according to claim 1, characterized in that: It can adapt to any connection combination of multiple detachable boxes; when the detachable box 2 is lowered to connect with the detachable box 1 that has been placed on the chassis (1), the pin (7) on the upper part of the detachable box 1 (2) can be accurately introduced into the pin hole (8) of the detachable box 2 (3) through the guide plate (9) on the upper part of the detachable box 2 (3); when the detachable box 3 (4) is lowered to connect with the detachable box 1 (2) or the detachable box 2 (3), the pin (7) on the upper part of the front box can be accurately introduced into its pin hole (8) through the guide plate (9) on the upper part of the detachable box 3 (4).

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