A transition car hook storage drawer

Abstract

The utility model relates to the technical field of rail transit especially, a kind of transition car hook storage drawer;Including first roller set, second roller set, third roller set, drawer section bar, drawer table top, slope guide rail, guide rail inner roller mechanism, linear guide, connecting rod mechanism, support track;The first roller set of drawer table top below fixed setting, second roller set slides in support track, support track is fixedly set on drawer section bar, and drawer table top is cooperated on drawer section bar by the first roller set, second roller set and support track, reach the stable transport of the transition car hook storage equipment when striding over ground barrier, and the process of striding over barrier is smooth, is completely automatically completed by mechanical structure, without manual intervention height adjustment, on the basis of guaranteeing striding over barrier ability, greatly improve the effect of the convenience of operation.

Description

Technical Field

[0001] This utility model relates to the technical field of rail transit, and in particular to a transition coupler storage drawer. Background Technology

[0002] In the existing technology, the transition coupler is usually stored on a simple mobile trolley or fixed bracket. Its movement and use depend entirely on flat and unobstructed ground conditions. When there are steps, ditches or uneven ground on site, such equipment is not only difficult to move, but also has the risk of tipping over, getting stuck or being damaged. This greatly limits its application scenarios and work efficiency, and cannot meet the needs of emergency repair and flexible operation in complex terrain. The need for manual intervention to adjust the height also limits the convenience of operation. Utility Model Content

[0003] The purpose of this utility model is to provide a transition coupler storage drawer to address the shortcomings of existing technologies. This achieves stable transportation of the transition coupler storage device when crossing ground obstacles, effectively solving the technical problem that existing transition coupler storage devices cannot be reliably used in irregular terrains such as steps and uneven surfaces due to their reliance on flat ground. It significantly improves the adaptability and practicality of the device, ensures smooth connection of the obstacle crossing process, and is fully automated by the mechanical structure without the need for manual height adjustment. While ensuring obstacle crossing ability, it greatly improves the convenience of operation.

[0004] To achieve the above objectives, the technical solution adopted by this utility model includes: a first roller group, a second roller group, a third roller group, a drawer profile, a drawer table, a slope guide rail, an inner roller mechanism of the guide rail, a linear guide rail, a linkage mechanism, and a support rail;

[0005] The first roller group and the second roller group, which are fixedly installed below the drawer surface, slide within the support rail. The support rail is fixedly installed on the drawer profile. The drawer surface slides on the drawer profile through the cooperation of the first roller group, the second roller group, and the support rail.

[0006] The slope guide rail is fixed to the drawer profile and located below the drawer countertop. The slope guide rail has a slope, and the inner roller mechanism of the guide rail is rolled inside the slope guide rail. Two linear guide rails are respectively located on both sides of the slope guide rail, and the linear guide rails are fixedly installed at the bottom of the drawer countertop.

[0007] The inner roller mechanism of the guide rail includes two connecting arms. The connecting arms have slots on their outwardly extending arms. The slots cooperate with the sliding grooves of the connecting arm fixing members. The connecting arm fixing members are sleeved on the linear guide rail. The inner roller mechanism of the guide rail rolls along the slope of the slope guide rail and drives the connecting arms to move along the slope trajectory. The connecting arm fixing members move up and down on the linear guide rail accordingly.

[0008] The linkage mechanism is provided with a top rotating point, a middle rotating point, and a bottom rotating point. The top rotating point is fixed to the top of the linear guide rail, the bottom rotating point is slidably disposed on the linear guide rail, the middle rotating point is fixed to the end of the connecting arm and protrudes outward between the top rotating point and the bottom rotating point, and the bottom rotating point is disposed below the connecting arm fixing member.

[0009] The third roller assembly is fixed to the end of the linkage mechanism below the bottom rotation point. The third roller assembly moves up and down with the linkage mechanism. After the linkage mechanism is straightened, the top rotation point, the middle rotation point, and the bottom rotation point are aligned to maintain the rigidity of the third roller assembly.

[0010] Furthermore, the third roller assembly is telescopically mounted below the cam linear guide rail via a guide rod. The top of the guide rod passes through the drawer surface and is equipped with a limit plate and a spring. A cam pressing platform is connected between the two guide rods of the two cam linear guide rails. The cam and its handle are fixed to the drawer surface and pass through the drawer surface to press against the cam pressing platform. The cam and its handle lift and press down on the cam pressing platform, causing the guide rod and the third roller assembly to rise and fall within the cam linear guide rail, and are self-locked by the rotation point of the cam and its handle.

[0011] Furthermore, the height of the limiting plate and the spring is adjustable, and the height of the third roller group can be adjusted by changing the height of the limiting plate and the spring.

[0012] Furthermore, the transition hook is detachably fixed to the drawer surface via a pin mechanism.

[0013] Furthermore, the oil pipe of the transition coupler is fixed to the drawer surface by a pipe clamp mechanism.

[0014] Furthermore, the drawer top is locked onto the drawer profile by a stop.

[0015] Furthermore, the cam and its handle are provided with a clearance arc, which avoids the limiting plate and the spring.

[0016] Furthermore, the first roller group, the second roller group, and the third roller group are each provided with two sets of rollers installed vertically, wherein the anti-displacement rollers are installed horizontally.

[0017] A method for transporting goods across obstacles using a transition coupler storage drawer.

[0018] In the initial state of the transition coupler storage drawer, the third roller group is supported by the linkage mechanism and is in a raised position. At this time, the drawer platform is jointly supported by the first roller group and the second roller group located in the support rail.

[0019] Pulling the drawer surface outward causes the first roller group and the second roller group to roll along the support track, thereby causing the drawer surface to slide outward from the drawer profile;

[0020] The inner roller mechanism of the guide rail rolls within the sloped guide rail fixed on the drawer profile, and through the cooperation of the groove of the connecting arm with the connecting arm fixing member fixed on the linear guide rail, the connecting arm and the connecting arm fixing member are allowed to move vertically relative to the bottom of the drawer surface.

[0021] The movement of the connecting arm and the connecting arm fixing part drives the linkage mechanism fixed thereto to move, so that the bottom rotating point slides on the linear guide rail and drives the third roller group below to descend smoothly.

[0022] By setting the path of the slope guide rail and the distance between the first roller group, the second roller group, and the third roller group, the timing of the descent of the third roller group is controlled to ensure that the third roller group has descended to the support plane before the second roller group is about to slide out and leave the support rail.

[0023] The drawer platform is supported by the first roller group and the lowered third roller group, ensuring that at least two roller groups provide support and stably cross obstacles throughout the transportation process.

[0024] A method for transporting goods across obstacles using a transition coupler storage drawer.

[0025] In the initial state of the transition coupler storage drawer, the cam and its handle are in the initial position before being lifted. Under the preload of the spring, the cam presses down on the platform and the guide rod, which are in a high position, driving the third roller group to the highest position. At this time, the drawer surface is supported by the first roller group and the second roller group located in the support rail.

[0026] Pulling the drawer surface outward causes the first roller group and the second roller group to roll along the support track, thereby causing the drawer surface to slide outward from the drawer profile;

[0027] After the third roller group crosses the obstacle, the operator rotates the cam and its handle, and the cam profile presses down on the cam pressing platform;

[0028] The cam pressing platform overcomes the elastic force of the spring and synchronously drives the two guide rods to move vertically downward along the cam linear guide rail. The guide rods drive the third roller group fixed at their ends to descend until they contact the support plane.

[0029] Rotate the cam and its handle to their self-locking angle to achieve mechanical self-locking through their rotation point, thereby locking the descent position of the cam pressing platform, the guide rod, and the third roller group to prevent them from rebounding when subjected to force.

[0030] Before the second roller group disengages from the support track or when additional support is needed, the support point is switched so that the drawer surface is supported by the first roller group and the third roller group, ensuring that there are always two sets of rollers to provide support for stable transportation and overcoming obstacles.

[0031] The system comprises a first roller group, a second roller group, a third roller group, a drawer profile, a drawer top, a slope guide rail, an inner roller mechanism within the guide rail, a linear guide rail, a linkage mechanism, and a support rail. The first roller group and the second roller group, fixedly positioned below the drawer top, slide within the support rail. The support rail is fixed to the drawer profile, and the drawer top slides on the drawer profile through the cooperation of the first roller group, the second roller group, and the support rail. The slope guide rail is fixed to the drawer profile and positioned below the drawer top. The drawer has a sloping ramp. An inner roller mechanism rolls within the ramp, and two linear guides are positioned on either side of it. These linear guides are fixedly mounted on the bottom of the drawer surface. The inner roller mechanism includes two connecting arms. Each connecting arm has a slot extending outwards, which engages with a sliding groove on a connecting arm fixing member. The connecting arm fixing member is fitted onto the linear guides. The inner roller mechanism rolls along the ramp, causing the connecting arms to move along the ramp's trajectory. The connecting arm fixing member then moves along the linear guide... The linkage mechanism features a top rotating point, a middle rotating point, and a bottom rotating point. The top rotating point is fixed to the top of the linear guide rail, the bottom rotating point is slidably disposed on the linear guide rail, the middle rotating point is fixed to the end of the connecting arm and protrudes outward between the top and bottom rotating points, and the bottom rotating point is located below the connecting arm fixing member. A third roller assembly is fixed to the end of the linkage mechanism below the bottom rotating point, and the third roller assembly moves up and down with the linkage mechanism. After the linkage mechanism is straightened... The structure, in which the top rotating point, the middle rotating point, and the bottom rotating point are aligned to maintain the rigidity of the third roller group, achieves stable transportation of the transition coupler storage equipment when crossing ground obstacles. This effectively solves the technical problem that existing transition coupler storage equipment cannot reliably operate in irregular terrains such as steps and uneven surfaces due to its reliance on flat ground. It significantly improves the adaptability and practicality of the equipment, ensures smooth connection of the obstacle crossing process, and is fully automated by the mechanical structure without the need for manual height adjustment. While ensuring obstacle crossing capability, it greatly improves the convenience of operation. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional schematic diagram of the initial state of the linkage scheme of this utility model, with the drawer not pulled out.

[0034] Figure 2 This is a three-dimensional schematic diagram of the drawer in the open state of the linkage scheme of this utility model.

[0035] Figure 3 This is a schematic diagram of the internal structure of the linkage scheme of this utility model in its initial, unextended state;

[0036] Figure 4 This is a schematic diagram of the internal structure of the drawer in the open state of the linkage scheme of this utility model;

[0037] Figure label:

[0038] 1. First roller group 2. Second roller group 3. Third roller group 4. Drawer profile 5. Drawer tabletop 6. Sloping guide rail 7. Inner roller mechanism of guide rail 7. Connecting arm 7-1. Groove 7-1-1. Connecting arm fixing part 7-1-2. Linear guide rail 8. Cam linear guide rail 8-1. Linkage mechanism 9. Top rotating point 9-1. Middle rotating point 9-2. Bottom rotating point 9-3. Support rail 10. Pin mechanism 15. Pipe clamp mechanism 16. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0040] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] A transitional coupler storage drawer, such as Figures 1-4 As shown, it includes a first roller group 1, a second roller group 2, a third roller group 3, a drawer profile 4, a drawer tabletop 5, a slope guide rail 6, an inner roller mechanism of the guide rail 7, a linear guide rail 8, a linkage mechanism 9, and a support rail 10.

[0042] The first roller group 1 and the second roller group 2, which are fixedly installed below the drawer surface 5, slide within the support rail 10. The support rail 10 is fixedly installed on the drawer profile 4. The drawer surface 5 slides on the drawer profile 4 through the cooperation of the first roller group 1, the second roller group 2 and the support rail 10.

[0043] The slope guide rail 6 is fixed on the drawer profile 4 and disposed below the drawer countertop 5. The slope guide rail 6 has a slope. The inner roller mechanism 7 is disposed inside the slope guide rail 6 and rolls. The two linear guide rails 8 are disposed on both sides of the slope guide rail 6. The linear guide rails 8 are fixedly installed at the bottom of the drawer countertop 5.

[0044] The inner roller mechanism 7 of the guide rail includes two connecting arms 7-1. The connecting arms 7-1 extend outward and have a slot 7-1-1. The slot 7-1-1 is engaged with the connecting arm fixing member 7-1-2. The connecting arm fixing member 7-1-2 is sleeved on the linear guide rail 8. The inner roller mechanism 7 of the guide rail rolls along the slope of the slope guide rail 6 and drives the connecting arm 7-1 to move along the slope trajectory. The connecting arm fixing member 7-1-2 moves up and down on the linear guide rail 8 accordingly.

[0045] The linkage mechanism 9 is provided with a top rotating point 9-1, a middle rotating point 9-2, and a bottom rotating point 9-3. The top rotating point 9-1 is fixed to the top of the linear guide rail 8. The bottom rotating point 9-3 is slidably disposed on the linear guide rail 8. The middle rotating point 9-2 is fixed to the end of the connecting arm 7-1 and protrudes outward between the top rotating point 9-1 and the bottom rotating point 9-3. The bottom rotating point 9-3 is disposed below the connecting arm fixing member 7-1-2.

[0046] The third roller group 3 is fixed to the end of the linkage mechanism 9 below the bottom rotation point 9-3. The third roller group 3 moves up and down with the linkage mechanism 9. After the linkage mechanism 9 is straightened, the top rotation point 9-1, the middle rotation point 9-2, and the bottom rotation point 9-3 are aligned to maintain the rigidity of the third roller group 3.

[0047] Specifically, through the sliding engagement of the first roller group 1 and the second roller group 2 within the support rail 10, the drawer surface 5 can stably extend and retract relative to the drawer profile 4. Utilizing the fixed slope guide rail 6 and the inner roller mechanism 7 rolling within it, when the drawer is pulled out, the roller mechanism moves along the slope and drives the connecting arm fixing member 7-1-2 to generate precise vertical displacement on the linear guide rail 8 via the slot 7-1-1 on the connecting arm 7-1. This is further actuated by the middle rotating point 9-2, pulling the linkage mechanism 9, ultimately transforming into the smooth lifting and lowering of the third roller group 3. This achieves automatic and seamless switching of the support point. The path and the spacing between the first roller group 1, the second roller group 2, and the third roller group 3 are precisely controlled to precisely control the landing timing of the third roller group 3. This ensures that the third roller group 3 has descended and contacted the ground before the second roller group 2 slides out of the support track 10. This ensures that at least two roller groups provide support simultaneously throughout the entire transportation process, effectively solving the problem of crossing minor ground obstacles. Furthermore, after straightening, the linkage mechanism 9 forms a stable structure with the top rotation point 9-1, the middle rotation point 9-2, and the bottom rotation point 9-3 aligned, providing reliable rigid support for the third roller group 3 after landing and guaranteeing stability under load. The entire scheme is structurally reliable, improving the applicability and maneuverability of the transition coupler under different ground conditions while ensuring obstacle-crossing capability.

[0048] As a preferred embodiment of the above, such as Figures 1-4 As shown, the transition hook is detachably fixed to the drawer surface 5 via a pin mechanism 15.

[0049] Specifically, by setting a latching mechanism 15 on the drawer platform 5, a modular connection between the transition coupler and the transport and storage device is achieved. This allows the transition coupler to be installed quickly and reliably onto or removed from the drawer platform 5 as an independent module, greatly improving the equipment's versatility and ease of maintenance. When it is necessary to replace or repair different models of transition couplers, or when only the coupler body needs to be transported separately, the operator does not need to operate the entire drawer device, which includes the first roller group 1, the second roller group 2, the third roller group 3, and the complex lifting mechanism. The coupler can be installed and removed simply through the latching mechanism 15, significantly reducing operational complexity and time costs. The latching mechanism 15 features a simple structure, good connection rigidity, and reliable locking, ensuring that there is no relative displacement or shaking between the transition coupler and the drawer platform 5 during heavy-load transport, guaranteeing the smoothness and safety of the transport process. While retaining the entire drawer sliding and obstacle-crossing transport functions, the latching mechanism 15 gives the equipment modular characteristics, improves the maintainability and replacement efficiency of the transition coupler, and further enhances the practicality and economy of the entire equipment.

[0050] As a preferred embodiment of the above, such as Figures 1-4 As shown, the oil pipe of the transition coupler is fixed to the drawer surface 5 by the pipe clamp mechanism 16.

[0051] Specifically, by installing a pipe clamp mechanism 16 on the drawer surface 5, the oil pipes of the transition hook are professionally stored and secured, solving the problems of entanglement, wear, damage, and even loosening or leakage of the oil pipes caused by random placement and dragging during equipment movement. The pipe clamp mechanism 16 orderly restrains and fixes the oil pipes on the drawer surface 5, making it move together with the entire drawer as a stable whole, completely avoiding the tripping risk that may be caused by the oil pipes scattering, and greatly improving the safety of the operation site. During the entire process of the drawer surface 5 carrying the transition hook sliding on the support rail 10 via the first roller group 1 and the second roller group 2, and rising and falling over obstacles via the third roller group 3, the firmly fixed oil pipes will not interfere with or scratch various moving parts such as the slope guide rail 6 and the linkage mechanism 9, effectively protecting the oil pipes and extending their service life. At the same time, it also makes the overall equipment neater and more standardized, facilitating daily inspection and maintenance.

[0052] As a preferred embodiment of the above, such as Figures 1-4 As shown, the drawer countertop 5 is locked onto the drawer profile 4 by a stop 17.

[0053] Specifically, by setting a stop on the drawer profile 4, a reliable final locking function is provided for the movement of the drawer surface 5. This effectively prevents the drawer surface 5 from being excessively impacted due to inertia or accidental external force when pushed back to the storage position, or even from accidentally detaching from the drawer profile 4, greatly improving the safety and reliability of the equipment. When the drawer surface 5 slides on the support rail 10 via the first roller group 1 and the second roller group 2 and is fully retracted into place, the stop achieves a simple yet robust locking through mechanical interference with the surface, ensuring the structural integrity of the entire equipment in storage or transportation conditions. This device avoids the movement or shaking of complex lifting mechanisms such as the third roller group 3 driven by the slope guide rail 6, the inner roller mechanism 7 of the guide rail, the linear guide rail 8, and the linkage mechanism 9 when not in operation.

[0054] As a preferred embodiment of the above, such as Figures 1-4 As shown, the first roller group 1, the second roller group 2, and the third roller group 3 are each provided with two sets of rollers installed vertically, with the anti-displacement rollers installed horizontally.

[0055] Specifically, by uniformly optimizing the roller installation methods of the first roller group 1, the second roller group 2, and the third roller group 3, a combination of upper and lower roller groups with horizontal anti-displacement rollers is adopted. This enhances the guiding and stability of each roller group during movement, thereby improving the operating accuracy and reliability of the entire equipment. The upper and lower roller groups can clamp the support rail 10 or the ground from the vertical direction, effectively limiting the vertical jump of the roller groups and ensuring the stability of the height of the drawer platform 5 under load. This provides a foundation for the precise lifting and lowering of the third roller group 3. The horizontally installed anti-displacement rollers mainly serve the function of lateral limiting. They can effectively resist the lateral forces or torques that may be generated during the movement of the equipment, preventing the first roller group 1 and the second roller group 2 from laterally shifting or even derailing within the support rail 10. At the same time, it also ensures that the third roller group 3 travels in a straight line on the ground without slipping.

[0056] A method for transporting goods across obstacles using a transition coupler storage drawer.

[0057] In the initial state of the transition coupler storage drawer, the cam and its handle 14 are in the initial position before being lifted. Under the preload of the spring 12, the cam presses down on the platform 13 and the guide rod 11, which are in a high position, driving the third roller group 3 to the highest position. At this time, the drawer table 5 is supported by the first roller group 1 and the second roller group 2 located in the support rail 10.

[0058] Pulling the drawer surface 5 outward causes the first roller group 1 and the second roller group 2 to roll along the support rail 10, thereby causing the drawer surface 5 to slide outward from the drawer profile 4;

[0059] After the third roller group 3 crosses the obstacle, the operator rotates the cam and its handle 14, and the cam profile presses down on the cam pressing platform 13.

[0060] The cam pressing platform 13 overcomes the elastic force of the spring 12 and synchronously drives the two guide rods 11 to move vertically downward along the cam linear guide rail 8-1. The guide rods 11 drive the third roller group 3 fixed at its end to descend until it contacts the support plane.

[0061] The cam and its handle 14 are rotated to their self-locking angle, and mechanical self-locking is achieved through their rotation point, thereby locking the descent position of the cam pressing platform 13, the guide rod 11 and the third roller group 3, and preventing them from rebounding when subjected to force;

[0062] Before the second roller group 2 disengages from the support track 10 or when additional support is needed, the support point is switched so that the drawer tabletop 5 is supported by the first roller group 1 and the third roller group 3, ensuring that there are always two sets of rollers to provide support for stable transportation and overcoming obstacles.

[0063] Specifically, by manually controlling the cam, the operator actively triggers and mechanically locks the rigid lifting control, achieving controllable and reliable switching of the support state. In the initial state, the cam and its handle 14 are in the raised position, and the third roller group 3 is kept raised under the action of the spring 12. The drawer platform 5 is jointly supported by the first roller group 1 and the second roller group 2 within the support rail 10. During transportation, the equipment is first slid forward by a simple pull. The timing of the descent of the third roller group 3 is actively judged and executed by the operator based on the actual obstacle situation. When crossing the obstacle and entering the switching support, the operator rotates the cam and its handle 14, which is converted into a linear downward pressure on the cam pressing platform 13 through the cam profile. This force then synchronously drives the two guide rods 11 to move vertically downward along the cam linear guide rail 8-1, ultimately transforming into the stable descent of the third roller group 3. Utilizing the self-locking characteristic of the cam mechanism, mechanical self-locking is achieved by rotating the handle to a specific angle, thereby rigidly locking the support state of the third roller group 3 without the need for continuous external force, effectively preventing retraction under load. This ensures that before the second roller group 2 leaves the support track 10, the operator can proactively and reliably establish a new support system consisting of the first roller group 1 and the third roller group 3, guaranteeing that there are always two sets of rollers providing stable support throughout the entire transportation process.

[0064] 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 storage drawer for a transition coupler, characterized in that: It includes a first roller group (1), a second roller group (2), a third roller group (3), a drawer profile (4), a drawer tabletop (5), a slope guide rail (6), a guide rail inner roller mechanism (7), a linear guide rail (8), a linkage mechanism (9), and a support rail (10); The first roller group (1) and the second roller group (2) fixedly installed below the drawer surface (5) slide within the support rail (10). The support rail (10) is fixedly installed on the drawer profile (4). The drawer surface (5) slides on the drawer profile (4) through the cooperation of the first roller group (1), the second roller group (2) and the support rail (10). The slope guide rail (6) is fixed on the drawer profile (4) and located below the drawer countertop (5). The slope guide rail (6) has a slope. The inner roller mechanism (7) of the guide rail is rolled inside the slope guide rail (6). Two linear guide rails (8) are respectively located on both sides of the slope guide rail (6). The linear guide rails (8) are fixedly installed at the bottom of the drawer countertop (5). The inner roller mechanism (7) of the guide rail includes two connecting arms (7-1). The connecting arms (7-1) have a groove (7-1-1) on their outwardly extending arms. The groove (7-1-1) is engaged with the connecting arm fixing member (7-1-2). The connecting arm fixing member (7-1-2) is sleeved on the linear guide rail (8). The inner roller mechanism (7) of the guide rail rolls along the slope of the slope guide rail (6) and drives the connecting arm (7-1) to move along the slope trajectory. The connecting arm fixing member (7-1-2) moves up and down on the linear guide rail (8). The linkage mechanism (9) is provided with a top rotating point (9-1), a middle rotating point (9-2), and a bottom rotating point (9-3). The top rotating point (9-1) is fixed to the top of the linear guide rail (8). The bottom rotating point (9-3) is slidably disposed on the linear guide rail (8). The middle rotating point (9-2) is fixed to the end of the connecting arm (7-1) and protrudes outward between the top rotating point (9-1) and the bottom rotating point (9-3). The bottom rotating point (9-3) is disposed below the connecting arm fixing member (7-1-2). The third roller assembly (3) is fixed at the end of the linkage mechanism (9) below the bottom rotation point (9-3). The third roller assembly (3) moves up and down with the linkage mechanism (9). After the linkage mechanism (9) is straightened, the top rotation point (9-1), the middle rotation point (9-2), and the bottom rotation point (9-3) are aligned to maintain the rigidity of the third roller assembly (3).

2. The transition coupler storage drawer according to claim 1, characterized in that: The transition hook is detachably fixed to the drawer surface (5) by means of a pin mechanism (15).

3. A transition coupler storage drawer according to claim 1, characterized in that: The oil pipe of the transition coupler is fixed to the drawer table (5) by a pipe clamp mechanism (16).

4. A transition coupler storage drawer according to claim 1, characterized in that: The drawer top (5) is locked onto the drawer profile (4) by a stop.

5. A transition coupler storage drawer according to claim 1, characterized in that: The first roller group (1), the second roller group (2), and the third roller group (3) are each provided with two sets of rollers installed vertically, with the anti-displacement rollers installed horizontally.

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