A packaging method for large wheelsets

Abstract

This invention provides a packaging method for large wheelsets, using two wheelset packaging frames. Each wheelet packaging frame includes an extension frame and support frames located on both sides of the extension frame. The extension frame and support frames are staggered. Contact pads are provided at the upper ends of both the extension frame and the support frames. The method includes the following steps: S1, placing the first wheelset packaging frame and the first layer of wheelsets; S2, placing the second wheelset packaging frame; S3, placing and fixing the first wheelet in the second layer; S4, placing and fixing the remaining two wheelets in the second layer. This invention ensures the stability of the wheelset packaging process while greatly improving the efficiency of wheelset packaging.

Description

Technical Field

[0001] This invention relates to the field of wheelset packaging technology, and more particularly to a packaging method for large wheelsets. Background Technology

[0002] High-speed trains and regular trains have wheelsets installed at the bottom, which contact the rails to support the track equipment and facilitate movement and transportation.

[0003] The manufactured wheelsets need to be packaged using special packaging racks to ensure their stability during storage and transportation. Traditional high-speed rail wheelset packaging racks are frame structures, including a rectangular frame structure that is relatively fixed on the outside and an arc-shaped limiting structure set on the inside of the frame structure. The high-speed rail wheelsets are transferred to the predetermined location by hoisting equipment such as cranes.

[0004] Layered and modular wheel pack racks can also be used to package and limit the wheels, ensuring the stability of the overall structure and improving the efficiency and space density of wheel pack packaging. However, modular wheel pack racks lack an external fixing frame, and flexible steel belts are needed to limit and fix the wheels to the pack rack during the wheel packing process.

[0005] Multiple fixations with flexible steel straps can ensure the stability between the wheelset and the wheelset packaging frame, but reduce packaging efficiency. Finally, a single fixation with flexible steel straps can improve the efficiency of wheelset packaging, but the overall structural stability is reduced during the packaging process. Multiple hoisting and support devices are needed to ensure structural stability, increasing equipment investment and limiting the improvement in packaging efficiency. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a packaging method for large wheelsets. This invention ensures the stability of the wheelset packaging process while greatly improving the efficiency of wheelset packaging.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0008] A packaging method for large wheelsets uses two wheelset packaging frames, each including an extension frame and support frames located on both sides of the extension frame. The extension frame and support frames are staggered. Contact pads are provided at the upper ends of both the extension frame and the support frames. The method includes the following steps: S1, Placement of the first wheelset packaging frame and the first layer of wheelsets: The first wheelset packaging frame is placed on a packaging platform, and three wheelsets are suspended to the upper surface of the first wheelset packaging frame using a hoisting device, completing the placement of the first layer of wheelsets; S2, Placement of the second wheelset packaging frame: The second wheelset packaging frame is placed on top of the first layer of wheelsets. S3. Placement and fixation of the first wheel pair of the second layer: First, place the first wheel pair of the second layer on the upper surface of the second wheel pair packaging frame extension frame. After the first wheel pair of the second layer is placed stably, fix the first wheel pair of the second layer to the first wheel pair and the first wheel pair packaging frame through the first flexible belt; S4. Placement and fixation of the remaining two wheel pairs of the second layer: Then place the remaining two wheel pairs of the second layer on the upper surface of the second wheel pair packaging frame support frame. After the remaining two wheel pairs of the second layer are placed stably, fix the remaining two wheel pairs of the second layer to the first wheel pair through the second flexible belt.

[0009] Preferably, during the placement of the remaining two wheelsets in the second layer in step S4, the inner and outer surfaces of the first wheelset in the second layer are used as a reference, and the remaining two wheelsets in the second layer are pressed against the inner and outer surfaces of the first wheelset in the second layer.

[0010] Preferably, in step S4, the remaining two wheelsets of the second layer are placed synchronously on the upper surface of the second wheelset packaging frame support.

[0011] Preferably, in step S3, the first flexible belt fixes the first wheel pair of the second layer to the two adjacent wheel pairs of the first layer and the first wheel pair packaging frame, and the first flexible belt forms a triangular stable structure.

[0012] Preferably, the outer side of the support frame of the wheelset packaging frame has a hollow structure to form a pressing opening. During the placement of the second wheelset packaging frame, a limiting device is also used. The limiting device passes through the pressing opening from both sides to press the second wheelset packaging frame together, ensuring the stability of the second wheelset packaging frame.

[0013] Preferably, the limiting device includes two sets of clamping components, each clamping component including two clamping rods arranged at intervals, the outer diameter of the clamping rods being smaller than the inner diameter of the clamping opening.

[0014] Preferably, a mating frame and a corresponding frame are respectively provided on both sides of the flexible strip. Two symmetrically arranged buckles are fixedly connected to one side of the mating frame, and two symmetrically arranged slots are opened on the inner side of the corresponding frame. The buckles and slots cooperate with each other. After the flexible strip is wound, the buckles and slots are connected and locked.

[0015] Preferably, both ends of the flexible belt are fixedly connected to connecting belts, the two connecting belts are centrally symmetrically arranged, and the opposite sidewalls of the connecting belts are provided with racks; a connecting gear is rotatably connected inside the corresponding frame, the connecting gear meshes with the two connecting belts, and a drive shaft is fixedly connected to the rotation shaft of the connecting gear. Rotating the drive shaft drives the connecting gear to mesh with the connecting belts on both sides, thereby tightening both ends of the traction flexible belt.

[0016] Preferably, during the placement of the first layer of wheelsets, the first wheelet is placed on the upper surface of the first wheelet packaging frame extension frame, and then the remaining two wheelsets of the first layer are placed on the upper surface of the first wheelet packaging frame support frame.

[0017] Preferably, the packaging platform can move up and down in a vertical direction, and after the first layer of wheelsets is placed, the packaging platform is controlled to descend to a predetermined height.

[0018] The beneficial effects of this invention are as follows:

[0019] Compared with existing technologies, by placing two layers of wheelsets in batches and fixing the wheelsets in batches, the efficiency of large wheelsets in the packaging process is greatly improved while ensuring the stability of the wheelset packaging. This shortens the packaging time for large wheelsets and reduces the use of packaging equipment. At the same time, the first wheelset in the second layer being in the middle position can position the remaining two wheelsets in the second layer, ensuring the accuracy and stability of the placement of the remaining two wheelsets in the second layer, further improving the efficiency of wheelset packaging. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the wheelset packaging state of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the wheelset packaging state according to the present invention.

[0022] Figure 3 This is a schematic diagram of the mating frame and corresponding frame structure of the present invention.

[0023] Figure 4 This is a flowchart of the packaging method of the present invention.

[0024] In the diagram: 1. Support frame; 2. Connecting frame; 3. Extension frame; 4. Support rod; 5. Base; 6. Fixing frame; 7. Contact pad; 8. Wheelset; 9. Wheelset axle; 10. Flexible belt; 11. Matching frame; 12. Corresponding frame; 13. Buckle; 14. Slot; 15. Connecting gear; 16. Drive shaft; 17. Limiting roller; 18. Limiting gear; 19. Connecting belt; 20. Limiting device. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 As shown, the present invention provides a wheelset packaging frame. In order to improve the packaging density of the wheelset 8 during the packaging process, it proposes a plurality of support frames 1 distributed on both sides. A base 5 is fixedly connected to one side of the support frame 1, a connecting frame 2 is fixedly connected to one side of the support frame 1, an extension frame 3 is fixedly connected to one side of the two connecting frames 2, and a fixing frame 6 is fixedly connected to one side of both the extension frame 3 and the support frame 1. A contact pad 7 is provided on one side of the fixing frame 6, and the wheelset 8 contacts and abuts against the contact pad 7. A support rod 4 is fixedly connected between the two support frames 1, and a flexible belt 10 is sleeved between the wheelset axle 9 and the support rod 4. The two ends of the flexible belt 10 are respectively provided with a mating frame 11 and a corresponding frame 12.

[0027] like Figure 1 , Figure 3 As shown, in order to facilitate the installation process of the flexible belt 10, it is proposed that two symmetrically arranged buckles 13 are fixedly connected on one side of the mating frame 11, and two symmetrically arranged slots 14 are opened on the inner side of the corresponding frame 12, and the buckles 13 and slots 14 cooperate with each other.

[0028] like Figure 3 As shown, in order to enhance the locking effect of the flexible belt 10 during the installation process, it is proposed that two symmetrically arranged limiting rollers 17 are rotatably connected in both the mating frame 11 and the corresponding frame 12, and the flexible belt 10 is arranged between the two limiting rollers 17 on the same side.

[0029] like Figure 3 As shown, in order to tighten the flexible belt 10 during installation and avoid the problem of loosening during reset, it is proposed that the rotating shaft of the limiting roller 17 be fixedly connected to the limiting gear 18, and the two limiting gears 18 on the same side mesh.

[0030] like Figure 3 As shown, in order to facilitate the positioning and fixing of the flexible belt during installation, it is proposed that both ends of the flexible belt 10 are fixedly connected to the connecting belt 19. The two connecting belts 19 are centrally symmetrically arranged, and the opposite sidewalls of the connecting belts 19 are provided with racks. A connecting gear 15 is rotatably connected to the corresponding frame 12. The connecting gear 15 meshes with the two connecting belts 19, and a drive shaft 16 is fixedly connected to the rotation shaft of the connecting gear 15.

[0031] like Figure 1-3As shown, in use, the support frame 1 is first connected and fixed to the extension frame 3 via two connecting frames 2. At this time, the support frame 1, connecting frames 2, and extension frame 3 form a "Z"-shaped support contact. Simultaneously, the support frames 1 distributed on both sides are connected by support rods 4, forming a connection between support frames 1 at the same layer. Then, the wheel sets 8 are placed in the fixing frames 6 on the support frame 1 and extension frame 3 for contact positioning, and contact pads 7 are used for contact protection. At this time, as... Figure 1 As shown, the wheelset 8 on the extension frame 3 is staggered with the wheelsets on both sides, thereby increasing the packaging density of the wheelset 8 during packaging placement. Then, the upper support frame 1 is placed on the wheelset 8. At this time, the upper support frame 1 and the fixing frame 6 on the extension frame 3 and the fixing frame 6 on the lower support frame 1 form a corresponding structure, which cooperates to limit the wheelset 8 and ensure its stability during packaging placement. Then, a flexible belt 10 is sleeved between the wheelset axle 9 and the support rod 4. Figure 2 As shown, the flexible strip 10, during installation, as... Figure 3 As shown, firstly, the mating frame 11 and the corresponding frame 12 are fixed by snapping the buckle 13 into the corresponding slot 14. At this time, the connecting belts 19 at both ends extend to the connecting gears 15 respectively. Then, the drive shaft 16 is rotated to drive the connecting gears 15 to mesh with the connecting belts 19 on both sides. Through meshing, the two ends of the traction flexible belt 10 are tightened. At this time, the connecting belts 19 are made of hard metal, which facilitates the tightening process of the flexible belt 10. During this process, the limiting rollers 17 on both sides follow the traction of the flexible belt 10 and keep rotating relative to each other under the meshing of the limiting gears 18. At this time, the flexible belt 10 is contacted and limited, restricting its reverse movement and preventing the problem of the flexible belt 10 from loosening.

[0032] See attached document Figure 4 A method for packaging large wheelsets, using two of the aforementioned wheelset packaging racks, includes the following steps:

[0033] S1. Place the first wheelset packaging frame on the packaging platform, and suspend three wheelsets on the upper surface of the first wheelset packaging frame using hoisting equipment to complete the placement of the first layer of wheelsets; hoisting equipment such as cranes can be selected to transport the wheelsets to the predetermined position and place them in a stable state at the contact pad 7 at the upper end of the support frame 1 and extension frame 3.

[0034] S2. Place the second wheelset packaging frame on the upper surface of the first layer of wheelsets. It should be noted that the lower surface of the second wheelset packaging frame is also fixed with a fixing frame 6 and a contact pad 7. The fixing frame 6 and the contact pad 7 can cooperate with the first layer of wheelsets to ensure the stability of the overall structure.

[0035] S3. First, place the first wheel pair of the second layer on the upper surface of the second wheel pair packaging frame extension frame 3. After the first wheel pair of the second layer is placed stably, fix the first wheel pair of the second layer to the first wheel pair and the first wheel pair packaging frame through the first flexible belt 10. First, place the first wheel pair of the second layer on the upper surface of the extension frame 3. The first wheel pair of the second layer can be in the middle position to ensure that the second wheel pair packaging frame is in a stable state. First, fix the first wheel pair of the second layer to the first wheel pair packaging frame and the wheel pair. This can limit the position of multiple wheel pairs and wheel pair packaging frames. The initial fixation ensures the initial structure of the overall structure.

[0036] S4. Then place the remaining two wheelsets of the second layer on the upper surface of the second wheelset packaging frame support 1. After the remaining two wheelsets of the second layer are placed stably, fix the remaining two wheelsets of the second layer to the first layer wheelsets through the second flexible belt 10. With the overall structure in a stable state, the remaining two wheelsets are placed stably to ensure the stability of the overall structure. Through the second fixation, the overall structure can be guaranteed to be in a completely stable state.

[0037] By placing two layers of wheelsets in batches and fixing the wheelsets in batches, the efficiency of large wheelsets in the packaging process is greatly improved while ensuring the stability of the wheelset packaging. This shortens the packaging time for large wheelsets and reduces the use of packaging equipment. At the same time, the first wheelset in the second layer being in the middle position can position the remaining two wheelsets in the second layer, ensuring the accuracy and stability of the placement of the remaining two wheelsets in the second layer, further improving the efficiency of wheelset packaging.

[0038] In step S4, during the placement of the remaining two wheelsets in the second layer, the inner and outer surfaces of the first wheelset in the second layer are used as a reference. The remaining two wheelsets in the second layer are pressed against the inner and outer surfaces of the first wheelset in the second layer. By staggering the placement of the wheelsets in the second layer, the density of the wheelset packaging can be increased and the volume of multiple wheelsets after packaging can be reduced. During the packaging process, the two adjacent wheelsets are in a pressed state, which further ensures the stability of the wheelsets during the placement process.

[0039] In step S4, the remaining two wheel pairs of the second layer are simultaneously placed on the upper surface of the second wheel pair packaging frame support 1. The simultaneous placement of the remaining two wheel pairs ensures that the second layer of wheel pair packaging frame is in a relatively stable state during placement, with equal force on both sides, further ensuring the stability of the overall structure. At the same time, the wheel pairs on both sides can be packaged simultaneously in the future, further improving the efficiency of wheel pair packaging.

[0040] In step S3, the first flexible belt 10 fixes the first wheel pair of the second layer to the two adjacent wheel pairs of the first layer and the first wheel pair packaging frame. The first flexible belt 10 forms a triangular stable structure, which can be specifically referred to the left side of the connecting frame 2 in the attached figure. In the above way, the first wheel pair of the second layer can be fixed to the first wheel pair and the first wheel pair packaging frame. The first flexible belt 10 can lock the three together, ensuring the initial stability of the overall structure.

[0041] After the first wheel pair in the second layer is placed and stabilized, the first wheel pair can be pressed against the second wheel pair packaging frame, and the first wheel pair is locked between the two wheel pair packaging frames. Then, the first flexible belt 10 can complete the packaging and locking of the two packaging frames and the two wheel pairs, which further ensures the initial stability of the overall structure and the stability of the subsequent placement of the remaining wheel pairs and the locking process.

[0042] The outer side of the support frame 1 of the wheelset packaging frame has a hollow structure to form a clamping opening. During the placement of the second wheelset packaging frame, a limiting device 20 is also used. The limiting device 20 passes through the clamping opening from both sides to clamp the second wheelset packaging frame, ensuring the stability of the second wheelset packaging frame. The limiting device 20 can further position the second wheelset packaging frame and restrict the degree of freedom of the second layer of wheelset packaging frame. Before the first flexible belt 10 is wrapped and fixed, the second layer of wheelset packaging frame is fixed, ensuring the stability of the overall structure.

[0043] Specifically, the limiting device 20 includes two sets of clamping components. Each clamping component includes two clamping rods arranged at intervals. The outer diameter of the clamping rod is smaller than the inner diameter of the clamping opening. A telescopic structure can be provided on the outside of the clamping rod to allow the clamping rod to extend into the clamping opening and complete the rapid locking of the entire structure. The clamping rod and the clamping opening can be set as mutually cooperating cones to further ensure the stability of the second-layer wheelset packaging frame during the packaging process.

[0044] On both sides of the flexible belt 10, there are mating frames 11 and corresponding frames 12 respectively. Two symmetrically arranged buckles 13 are fixedly connected to one side of the mating frame 11. Two symmetrically arranged slots 14 are opened on the inner side of the corresponding frame 12. The buckles 13 and the slots 14 cooperate with each other. After the flexible belt 10 is wound, the buckles 13 and the slots 14 are connected to lock it. Through the above structural design, the flexible belt 10 can be quickly locked, which further improves the locking and fixing efficiency of the flexible belt 10 and improves the overall packaging efficiency of the wheelset.

[0045] It should be noted that the flexible strip 10 can be wrapped around the final fixed position multiple times. With the combined action of friction and the buckles 13 and slots 14, the overall structure is kept in a very stable state. This prevents the structure from shaking during transportation and concentrating the force on one point, thus avoiding instability in the packaging and fixing caused by local structural damage.

[0046] Connecting belts 19 are fixedly connected to both ends of the flexible belt 10. The two connecting belts 19 are centrally symmetrically arranged, and racks are provided on the opposite side walls of the connecting belts 19. Connecting gears 15 are rotatably connected to the corresponding frame 12. The connecting gears 15 mesh with the two connecting belts 19. A drive shaft 16 is fixedly connected to the rotating shaft of the connecting gears 15. Rotating the drive shaft 16 drives the connecting gears 15 to mesh with the connecting belts 19 on both sides, thereby tightening both ends of the traction flexible belt 10. By meshing the connecting gears 15 and the connecting belts 19, the tightness of the flexible belt 10 can be adjusted, and excess material of the flexible belt 10 can be stored, further ensuring the stability of the overall structure. It also facilitates operation and further improves the efficiency of wheelset packaging.

[0047] During the placement of the first layer of wheelsets, the first wheelet is placed on the upper surface of the first wheelet packaging frame extension 3, and then the remaining two wheelsets of the first layer are placed on the upper surface of the first wheelet packaging frame support 1. The first layer of wheelsets is also placed in the middle first and then on both sides during the packaging process to ensure the stability of the overall structure.

[0048] Furthermore, the packaging platform can move up and down vertically. After the first layer of wheelsets is placed, the packaging platform is lowered to a predetermined height. Through the above structural design, the lifting equipment can transport the wheelsets in a constant position, which reduces the difficulty of lifting and positioning the lifting equipment and achieves efficient transportation during the wheelset packaging process.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A packaging method for large wheelsets, using two wheelset packaging frames, each wheelset packaging frame including an extension frame (3) and support frames (1) located on both sides of the extension frame (3), the extension frame (3) and the support frames (1) being staggered from each other, and both the extension frame (3) and the support frames (1) having contact pads (7) at their upper ends, characterized in that, Includes the following steps: S1. Placement of the first wheel set packaging frame and the first layer of wheelsets: Place the first wheel set packaging frame on the packaging platform, and suspend three wheelsets to the upper surface of the first wheel set packaging frame using hoisting equipment to complete the placement of the first layer of wheelsets; S2. Placement of the second wheelset packaging rack: Place the second wheelset packaging rack on the upper surface of the first wheelset; S3, Placement and fixing of the first wheel pair of the second layer: First, place the first wheel pair of the second layer on the upper surface of the second wheel pair packaging frame extension frame (3). After the first wheel pair of the second layer is placed stably, fix the first wheel pair of the second layer to the first wheel pair and the first wheel pair packaging frame through the first flexible belt (10). S4. Placement and fixation of the remaining two wheelsets in the second layer: Place the remaining two wheelsets in the second layer on the upper surface of the second wheelet packaging frame support (1). After the remaining two wheelsets in the second layer are placed stably, fix the remaining two wheelsets in the second layer to the first layer wheelsets through the second flexible belt (10). In step S3, the first flexible strip (10) fixes the first wheel pair of the second layer to the two adjacent wheel pairs of the first layer and the first wheel pair packaging frame, and the first flexible strip (10) forms a triangular stable structure; The outer side of the support frame (1) of the wheelset packaging frame is a hollow structure to form a tight opening. During the placement of the second wheelset packaging frame, a limiting device (20) is also used. The limiting device (20) passes through the tight opening from both sides to press the second wheelset packaging frame together, ensuring the stability of the second wheelset packaging frame. The flexible belt (10) is provided with a mating frame (11) and a corresponding frame (12) on both sides respectively. Both ends of the flexible belt (10) are fixedly connected to a connecting belt (19). The two connecting belts (19) are centrally symmetrically arranged. The opposite sidewalls of the connecting belts (19) are provided with racks. A connecting gear (15) is rotatably connected inside the corresponding frame (12). The connecting gear (15) meshes with the two connecting belts (19). A drive shaft (16) is fixedly connected to the rotating shaft of the connecting gear (15). Rotating the drive shaft (16) drives the connecting gear (15) to mesh with the connecting belts (19) on both sides, thereby tightening both ends of the traction flexible belt (10).

2. The packaging method for a large wheelset according to claim 1, characterized in that, In step S4, during the placement of the remaining two wheelsets of the second layer, the inner and outer surfaces of the first wheelset of the second layer are used as references, and the remaining two wheelsets of the second layer are pressed against the inner and outer surfaces of the first wheelset of the second layer.

3. The packaging method for a large wheelset according to claim 1, characterized in that, In step S4, the remaining two wheelsets of the second layer are placed synchronously on the upper surface of the second wheelset packaging frame support (1).

4. The packaging method for a large wheelset according to claim 1, characterized in that, The limiting device (20) includes two sets of abutting components, each abutting component including two spaced abutting rods, the outer diameter of which is smaller than the inner diameter of the abutting opening.

5. The packaging method for a large wheelset according to claim 1, characterized in that, Two symmetrical buckles (13) are fixedly connected to one side of the matching frame (11), and two symmetrical slots (14) are opened on the inner side of the corresponding frame (12). The buckles (13) and slots (14) cooperate with each other. After the flexible strip (10) is wound, the buckles (13) and slots (14) are connected and locked.

6. The packaging method for a large wheelset according to claim 1, characterized in that, During the placement of the first layer of wheelsets, the first wheelet is placed on the upper surface of the first wheelet packaging rack extension frame (3), and then the remaining two wheelsets of the first layer are placed on the upper surface of the first wheelet packaging rack support frame (1).

7. The packaging method for a large wheelset according to claim 1, characterized in that, The packaging platform can move up and down in the vertical direction. After the first layer of wheelsets is placed, the packaging platform is controlled to descend to a predetermined height.

Images