Stainless steel transfer trolley traction device

Abstract

The utility model belongs to stainless steel traction device technical field especially for a kind of stainless steel transfer trolley traction device, including traction main body, connecting mechanism, flexible connecting component and adjustable connecting component;The traction main body includes the main traction frame of the "person" type structure and the traction plate of the big end inside of the main traction frame slidingly arranged;The connecting mechanism is fixed to the small end of the main traction frame;The both ends of the traction plate are connected with the main traction frame by flexible connecting component;Two sets of connecting mechanisms are provided on the traction plate;Spacing adjustment is realized by adjustable connecting component, and common transfer trolley traction interface with different widths can be adapted;The first telescopic spring of flexible buffer component and the second telescopic spring of adjustable connecting component form double buffering structure, can absorb rigid impact when traction starts and stops, effectively prevent trolley shaking, goods displacement, avoid traction component damage due to impact stress at the same time, prolong the service life of device.

Description

Technical Field

[0001] This utility model belongs to the technical field of stainless steel traction devices, specifically relating to a stainless steel transfer trolley traction device. Background Technology

[0002] Stainless steel transfer trolley traction devices are mainly used for traction and fixing of workstation equipment such as logistics trolleys and turnover racks. The traction force is transmitted during material handling through hooks or tow hooks.

[0003] Currently, the traction devices commonly used for stainless steel transfer trolleys are mostly fixed hook structures, which have the following shortcomings: First, they have poor adaptability and cannot be adjusted according to the width of the traction interface of different trolleys. They require customized traction devices for different trolleys, which increases costs and has low versatility. Second, they lack a buffer structure during traction, and rigid impacts are easily generated when the trolley starts or stops, causing the trolley to shake, the goods to shift, or even damage the traction components.

[0004] To solve the above problems, this utility model proposes a stainless steel transfer trolley traction device. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a stainless steel transfer trolley traction device, which is convenient to use, has a wide range of applications, and high safety performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel transfer trolley traction device, comprising a traction body, a connecting mechanism, a flexible connecting component, and an adjustable connecting component;

[0007] The traction body includes a main traction frame with a "V"-shaped structure and a traction plate that is slidably disposed on the inner side of the large end of the main traction frame;

[0008] The connecting mechanism is fixed to the small end of the main traction frame and is used to connect to the traction interface of the traction equipment.

[0009] Both ends of the traction plate are connected to the main traction frame via flexible connection components;

[0010] The traction plate is provided with two sets of connecting mechanisms. The connecting mechanisms are movably connected to the traction plate by adjustable connecting components, and are used to adjust the position of the connecting mechanisms relative to the length direction of the traction plate.

[0011] As a preferred technical solution of this utility model, the connecting mechanism includes a U-shaped frame, a hook, and a sleeve;

[0012] The sleeve is rotatably installed inside the U-shaped frame, and the hook has a "J" shaped structure and is rotatably connected to the sleeve.

[0013] As a preferred embodiment of this utility model, the connecting mechanism further includes a U-shaped elastic strip;

[0014] The two ends of the U-shaped elastic strip are fixed to the outer wall of the hook, and the middle part protrudes towards the opening of the hook to form an elastic locking structure.

[0015] As a preferred embodiment of this utility model, the connecting mechanism further includes a pin and a limiting nut;

[0016] The hook has an external thread and penetrates the sleeve, and there are limiting nuts on both sides of the sleeve that are installed on the hook by thread engagement.

[0017] The two pins are symmetrically fixed on both sides of the sleeve, and the pins pass through the U-shaped frame to form a rotating structure.

[0018] As a preferred embodiment of this utility model, the flexible connection assembly includes a limiting plate, a first threaded rod, a first locking nut, and a first telescopic spring;

[0019] The inner wall of the main traction frame is provided with an installation groove, and the two ends of the traction plate are respectively embedded in the corresponding installation groove. The two limiting plates are fixed in the installation groove at intervals, and the embedded end of the traction plate is located between the two limiting plates.

[0020] The first threaded rod passes through both of the limiting plates and the traction plate;

[0021] The first locking nut is provided at the protruding end of the first threaded rod by means of thread engagement;

[0022] First telescopic springs are distributed on both sides of the traction plate and are sleeved on the first threaded rod.

[0023] As a preferred technical solution of this utility model, the adjustable connection assembly includes a second threaded rod, a second locking nut, and a second telescopic spring;

[0024] The traction plate has a waist-shaped hole extending along its length, and the second threaded rod is fixed to the outer wall of the U-shaped frame and passes through the waist-shaped hole;

[0025] The second locking nut is provided at the protruding end of the second threaded rod by means of thread engagement;

[0026] The second telescopic spring is sleeved on the second threaded rod and is located between the traction plate and the U-shaped frame.

[0027] As a preferred embodiment of this utility model, two second threaded rods are symmetrically fixed to the outer wall of the U-shaped frame and pass through the corresponding waist-shaped holes.

[0028] As a preferred embodiment of this utility model, a plurality of reinforcing rods are fixed on the inner side of the main traction frame.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] 1. The adjustable connection components enable spacing adjustment, which can be adapted to the traction interfaces of common transfer trolleys with different widths. There is no need to customize special traction devices for different trolleys, reducing equipment procurement and inventory costs, while reducing replacement frequency and improving handling efficiency.

[0031] 2. The first telescopic spring of the flexible buffer assembly and the second telescopic spring of the adjustable connecting assembly form a double buffer structure, which can absorb the rigid impact during traction start-up and stop, effectively prevent the trolley from shaking and the goods from shifting, and at the same time avoid damage to the traction components due to impact stress, thus extending the service life of the device.

[0032] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0033] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is an isometric structural diagram of the connecting mechanism in this utility model;

[0036] Figure 3 This utility model Figure 1 A magnified structural diagram of the flexible connection component in the diagram;

[0037] Figure 4 This utility model Figure 1 A magnified schematic diagram of the adjustable connection component in the diagram.

[0038] In the diagram: 1. Traction body; 11. Main traction frame; 111. Mounting slot; 12. Traction plate; 121. Waist-shaped hole; 13. Reinforcing rod; 2. Connecting mechanism; 21. U-shaped frame; 22. Hook; 23. U-shaped elastic strip; 24. Sleeve; 25. Pin; 26. Limiting nut; 3. Flexible connection assembly; 31. Limiting plate; 32. First threaded rod; 33. First locking nut; 34. First telescopic spring; 4. Adjustable connection assembly; 41. Second threaded rod; 42. Second locking nut; 43. Second telescopic spring. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please see Figures 1-4 The present invention provides the following technical solution: a stainless steel transfer trolley traction device, comprising a traction body 1, a connecting mechanism 2, a flexible connecting component 3 and an adjustable connecting component 4.

[0041] Furthermore, by Figure 1 As shown, in this embodiment, the traction body 1 includes a main traction frame 11 with a "V"-shaped structure and a traction plate 12 slidably disposed on the inner side of the large end of the main traction frame 11; the connecting mechanism 2 is fixed to the small end of the main traction frame 11 and is used to connect the traction interface of the traction equipment; both ends of the traction plate 12 are connected to the main traction frame 11 through flexible connecting components 3; the traction plate 12 is provided with two sets of connecting mechanisms 2, which are movably connected to the traction plate 12 by adjustable connecting components 4 and are used to adjust the position of the connecting mechanism 2 relative to the length direction of the traction plate 12. After adopting the above scheme, in use, the main traction frame 11 is formed by welding stainless steel, the connecting mechanism 2 at its small end is connected to the traction interface of the traction equipment (such as an AGV trolley), and the two connecting mechanisms 2 at its large end are used to connect to the traction interface of the transfer trolley. The traction equipment provides traction power, and the traction device drives the transfer trolley to move.

[0042] Connect the connecting mechanism 2 at the small end of the main traction frame 11 to the traction interface of the traction equipment (such as an AGV trolley). Then, according to the traction interface spacing of the transfer trolley to be tractioned, adjust the position of the two sets of connecting mechanisms 2 on the traction plate 12 through the adjustable connecting component 4 until the two sets of connecting mechanisms 2 are aligned with the traction interface of the transfer trolley.

[0043] During the traction start-up phase, the traction force output by the traction equipment is first transmitted to the "V"-shaped main traction frame 11 through the connecting mechanism 2 at the small end of the main traction frame 11. Since the main traction frame 11 adopts the "V"-shaped design, it can evenly distribute the single-point traction force of the traction equipment and convert it into a component force transmitted to both sides of the large end of the main traction frame 11, thus avoiding the concentration of traction force and causing local components to be overloaded.

[0044] At this time, the traction force is transmitted to the traction plate 12 along the sliding path inside the large end of the main traction frame 11, and the flexible connection component 3 between the two ends of the traction plate 12 and the main traction frame 11 begins to play its role: on the one hand, the flexible connection component 3, as the intermediate carrier for the transmission of traction force, smoothly transmits the dispersed traction force of the main traction frame 11 to the traction plate 12; on the other hand, its flexible characteristics can absorb the impact force at the moment of traction start-up, buffer the speed difference between the traction equipment and the transfer trolley, and avoid damage to the connecting parts caused by rigid impact.

[0045] In the final stage of traction force transmission, the traction plate 12 transmits the force to the two sets of connecting mechanisms 2 through the adjustable connecting components 4, and then the connecting mechanisms 2 transmit the traction force to the transfer trolley, driving the transfer trolley to move at a constant speed along the preset path of the traction equipment. During this process, the "human" shaped main traction frame 11 continues to play a force-dispersing role, so that the two ends of the traction plate 12 are evenly stressed, avoiding the transfer trolley from tilting due to excessive stress on one side.

[0046] When the traction task ends and the traction equipment stops outputting power, the flexible connection component 3 gradually returns to its initial form. Under the reset force of the flexible connection component 3, the traction plate 12 slides back to its initial position along the main traction frame 11. Then, the locking of each connection mechanism 2 is released, first separating the connection between the small end of the main traction frame 11 and the traction equipment, and then separating the connection between the connection mechanism 2 on the traction plate 12 and the transfer trolley, thus completing a single traction operation.

[0047] Optionally, by Figure 1 and Figure 2 As shown in this embodiment, the connecting mechanism 2 includes a U-shaped frame 21, a hook 22, and a sleeve 24. The sleeve 24 is rotatably installed inside the U-shaped frame 21, and the hook 22 has a "J"-shaped structure and is rotatably connected to the sleeve 24. With the above solution, when performing interface docking operations, for the traction interface of the traction equipment (such as AGV trolley) or transfer trolley, the operator can manually rotate the hook 22 to form a dual rotational degree of freedom of "hook 22 rotating relative to sleeve 24 + sleeve 24 rotating relative to U-shaped frame 21", so that the "J"-shaped opening of the hook 22 can flexibly adjust the angle to adapt to the height difference of the interface in the vertical direction.

[0048] Preferably, by Figure 1 and Figure 2As shown, in this embodiment, the connecting mechanism 2 also includes a U-shaped elastic strip 23; the two ends of the U-shaped elastic strip 23 are fixed to the outer side wall of the hook 22, and the middle part protrudes towards the opening of the hook 22 to form an elastic clamping structure. After adopting the above solution, during the docking stage of the connecting mechanism 2, when the operator adjusts the angle of the "J"-shaped hook 22 through the double rotation structure so that the opening of the hook 22 is aligned with the traction interface of the traction equipment or transfer trolley, the traction interface will first contact the middle part of the U-shaped elastic strip 23. Since the U-shaped elastic strip 23 has elastic deformation capability, when the traction interface squeezes the U-shaped elastic strip 23, the U-shaped elastic strip 23 will bend and deform towards the inside of the hook 22, making room for the traction interface to enter the "J"-shaped slot.

[0049] As the traction interface continues to be pushed in until it is fully embedded in the slot of the hook 22, the U-shaped elastic strip 23 resets under its own elastic rebound force and protrudes again towards the opening of the hook 22, forming an "elastic clamping barrier" to prevent the hook 22 from falling off due to slight vibration after the initial docking.

[0050] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the connecting mechanism 2 further includes pins 25 and limiting nuts 26; the hook 22 has external threads and penetrates the sleeve 24, and limiting nuts 26 are distributed on both sides of the sleeve 24 and installed on the hook 22 by thread engagement; two pins 25 are symmetrically fixed on both sides of the sleeve 24, and the pins 25 penetrate the U-shaped frame 21 to form a rotating structure. With the above scheme, during use, in the pre-adjustment stage before docking of the connecting mechanism 2, the extension length of the hook 22 needs to be adapted by the limiting nuts 26: since the hook 22 penetrates the sleeve 24 and has threads on its outer surface, the operator can rotate the sleeve 24 clockwise or counterclockwise. 4. When it is necessary to increase the length of the hook 22 extending out of the sleeve 24 to accommodate a thicker traction interface, the limit nuts 26 on both sides are rotated simultaneously away from the sleeve 24, and then the hook 22 is pulled to adjust the extension amount. If it is necessary to shorten the extension length, the nuts are rotated towards the sleeve 24 to push the hook 22 back. After the extension length of the hook 22 matches the thickness of the traction interface, the limit nuts 26 on both sides are tightened in the opposite direction so that the end face of the nut is close to the side wall of the sleeve 24. The axial position of the hook 22 is locked by the self-locking force of the thread, which prevents the hook 22 from moving relative to the sleeve 24 during subsequent docking or traction, laying the foundation for accurate docking.

[0051] In addition, the hook 22 can rotate relative to the sleeve 24 and can also drive the sleeve 24 to flip, which can adjust the direction and angle of the hook 22 to adapt to the direction and shape of the traction interface.

[0052] Optionally, by Figure 1 and Figure 3As shown, in this embodiment, the flexible connection assembly 3 includes a limiting plate 31, a first threaded rod 32, a first locking nut 33, and a first telescopic spring 34; the inner wall of the main traction frame 11 is provided with an installation groove 111, and the two ends of the traction plate 12 are respectively embedded in the corresponding installation groove 111. The two limiting plates 31 are fixedly fixed in the installation groove 111 at intervals, and the embedded end of the traction plate 12 is located between the two limiting plates 31; the first threaded rod 32 passes through the two limiting plates 31 and the traction plate 12; the first locking nut 33 is provided at the protruding end of the first threaded rod 32 by thread engagement; both sides of the traction plate 12 are... A first telescopic spring 34 is distributed and sleeved on the first threaded rod 32. With the above scheme, during use, in the traction start-up stage, the flexible connection component 3 achieves smooth force transmission through "rigid guidance + elastic buffering": when the main traction frame 11 transmits the traction force to the mounting groove 111, the embedded end of the traction plate 12 is pushed. At this time, the first telescopic spring 34 on the side near the small end of the main traction frame 11 is compressed (the first telescopic spring 34 on the other side is stretched). The elastic potential energy of the first telescopic spring 34 absorbs the impact force at the moment of start-up, avoiding rigid transmission that causes deformation of the traction plate 12 or the main traction frame 11.

[0053] During the turning process, the bidirectional elasticity of the flexible connection component 3 balances the forces on both sides: when the transfer trolley follows the traction equipment to turn, the inner traction resistance increases, and the embedded end of the traction plate 12 will shift to the inside of the turn, compressing the inner first telescopic spring 34; at the same time, the outer first telescopic spring 34 is stretched, generating a reverse elastic force, forming a balance mechanism of "inner thrust + outer pull" to prevent the traction plate 12 from shifting excessively.

[0054] During the traction stop phase, the flexible connection component 3 drives the traction plate 12 to reset: when the traction equipment stops outputting power, the inertial force of the trolley gradually disappears, and the first telescopic springs 34 on both sides return to their initial length under the action of elastic rebound force, driving the embedded end of the traction plate 12 to slide along the first threaded rod 32 to the middle position of the two limit plates 31, ensuring that the traction plate 12 accurately returns to its initial state and is ready for the next traction.

[0055] Optionally, by Figure 1 , Figure 2 and Figure 4As shown, in this embodiment, the adjustable connecting assembly 4 includes a second threaded rod 41, a second locking nut 42, and a second telescopic spring 43; the traction plate 12 has an oblong hole 121 extending along its length direction; the second threaded rod 41 is fixed to the outer wall of the U-shaped frame 21 and passes through the oblong hole 121; the second locking nut 42 is provided at the protruding end of the second threaded rod 41 by threaded engagement; the second telescopic spring 43 is sleeved on the second threaded rod 41 and is located between the traction plate 12 and the U-shaped frame 21. With the above solution, in use, the oblong hole 121 opened along the length direction on the traction plate 12 serves as the transverse connection of the connecting mechanism 2. The second threaded rod 41 is fixed at one end to the outer wall of the U-shaped frame 21 of the connecting mechanism 2, and the other end passes through the waist-shaped hole 121. The operator can first loosen the second locking nut 42. At this time, the U-shaped frame 21 can drive the second threaded rod 41 to slide along the length of the waist-shaped hole 121 until the "J" hook 22 of the connecting mechanism 2 is fully aligned with the traction interface of the transfer trolley. During this process, the second telescopic spring 43 sleeved on the second threaded rod 41 is always in a slightly compressed state. Its elastic force can help the U-shaped frame 21 to remain stable, avoid deviation or jamming during sliding, and improve the accuracy of position adjustment.

[0056] During the traction operation phase, the adjustable connection component 4 achieves adaptive force transmission through "elastic buffer + rigid limit": when the traction plate 12 transmits the traction force to the second threaded rod 41, the second threaded rod 41 first transmits the force to the U-shaped frame 21 through the second telescopic spring 43 in a compressed state, and then transmits it to the transfer trolley through the connection mechanism 2.

[0057] Preferably, by Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, two second threaded rods 41 are symmetrically fixed to the outer wall of the U-shaped frame 21 and pass through the corresponding waist-shaped hole 121. With the above solution, the double second threaded rods 41 design ensures that the U-shaped frame 21 is always parallel to the traction plate 12 during use, and avoids the hook 22 from shifting at an angle during subsequent docking.

[0058] The cooperation between the double second threaded rod 41 and the double waist-shaped hole 121 forms a "double guide constraint", which restricts the U-shaped frame 21 to only translate along the length direction of the waist-shaped hole 121, thus avoiding the risk of rotation around the rod that may occur in a single rod design.

[0059] Preferably, by Figure 1 As shown, in this embodiment, multiple reinforcing rods 13 are fixed on the inner side of the main traction frame 11. After adopting the above solution, the structural strength of the traction body 1 is further improved during use, and the traction body 1 is prevented from deforming when tractioning heavy objects.

[0060] Components not described in detail in this article are existing technologies.

[0061] The working principle and usage process of this utility model: When the traction device of this utility model is in use, the main traction frame 11 is formed by welding stainless steel. The connecting mechanism 2 at its small end is connected to the traction interface of the traction equipment (such as AGV trolley), and the two connecting mechanisms 2 at the large end are used to connect to the traction interface of the transfer trolley. The traction equipment provides traction power, and the traction device drives the transfer trolley to move.

[0062] Connect the connecting mechanism 2 at the small end of the main traction frame 11 to the traction interface of the traction equipment. Then, according to the traction interface spacing of the transfer trolley to be tractioned, adjust the position of the two sets of connecting mechanisms 2 on the traction plate 12 through the adjustable connecting component 4 until the two sets of connecting mechanisms 2 are aligned with the traction interface of the transfer trolley.

[0063] During the traction start-up phase, the traction force output by the traction equipment is first transmitted to the "V"-shaped main traction frame 11 through the connecting mechanism 2 at the small end of the main traction frame 11. Since the main traction frame 11 adopts the "V"-shaped design, it can evenly distribute the single-point traction force of the traction equipment and convert it into a component force transmitted to both sides of the large end of the main traction frame 11, thus avoiding the concentration of traction force and causing local components to be overloaded.

[0064] At this time, the traction force is transmitted to the traction plate 12 along the sliding path inside the large end of the main traction frame 11, and the flexible connection component 3 between the two ends of the traction plate 12 and the main traction frame 11 begins to play its role: on the one hand, the flexible connection component 3, as the intermediate carrier for the transmission of traction force, smoothly transmits the dispersed traction force of the main traction frame 11 to the traction plate 12; on the other hand, its flexible characteristics can absorb the impact force at the moment of traction start-up, buffer the speed difference between the traction equipment and the transfer trolley, and avoid damage to the connecting parts caused by rigid impact.

[0065] In the final stage of traction force transmission, the traction plate 12 transmits the force to the two sets of connecting mechanisms 2 through the adjustable connecting components 4, and then the connecting mechanisms 2 transmit the traction force to the transfer trolley, driving the transfer trolley to move at a constant speed along the preset path of the traction equipment. During this process, the "human" shaped main traction frame 11 continues to play a force-dispersing role, so that the traction plate 12 is evenly stressed at both ends, avoiding the transfer trolley from tilting due to excessive force on one side.

[0066] When the traction task ends and the traction equipment stops outputting power, the flexible connection component 3 gradually returns to its initial form. Under the reset force of the flexible connection component 3, the traction plate 12 slides back to its initial position along the main traction frame 11. Then, the locking of each connection mechanism 2 is released, first separating the connection between the small end of the main traction frame 11 and the traction equipment, and then separating the connection between the connection mechanism 2 on the traction plate 12 and the transfer trolley, thus completing a single traction operation.

[0067] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stainless steel transfer trolley traction device, characterized in that, It includes a traction body (1), a connecting mechanism (2), a flexible connecting component (3), and an adjustable connecting component (4); The traction body (1) includes a main traction frame (11) with a "human" shaped structure and a traction plate (12) that is slidably disposed on the inner side of the large end of the main traction frame (11). The connecting mechanism (2) is fixed to the small end of the main traction frame (11) and is used to connect to the traction interface of the traction equipment; Both ends of the traction plate (12) are connected to the main traction frame (11) through flexible connection components (3); The traction plate (12) is provided with two sets of connecting mechanisms (2). The connecting mechanisms (2) are movably connected to the traction plate (12) by means of adjustable connecting components (4) to adjust the position of the connecting mechanisms (2) relative to the length direction of the traction plate (12).

2. The stainless steel transfer trolley traction device according to claim 1, characterized in that: The connecting mechanism (2) includes a U-shaped frame (21), a hook (22) and a sleeve (24); The sleeve (24) is rotatably installed inside the U-shaped frame (21), and the hook (22) has a "J" shaped structure and is rotatably connected to the sleeve (24).

3. The stainless steel transfer trolley traction device according to claim 2, characterized in that: The connecting mechanism (2) also includes a U-shaped elastic strip (23); The two ends of the U-shaped elastic strip (23) are fixed to the outer wall of the hook (22), and the middle part protrudes towards the opening of the hook (22) to form an elastic clamping structure.

4. The stainless steel transfer trolley traction device according to claim 2, characterized in that: The connecting mechanism (2) also includes a pin (25) and a limiting nut (26); The hook (22) has an external thread and passes through the sleeve (24). On both sides of the sleeve (24), there are limiting nuts (26) that are installed on the hook (22) by thread engagement. Two pins (25) are symmetrically fixed on both sides of the sleeve (24), and the pins (25) pass through the U-shaped frame (21) to form a rotating structure.

5. The stainless steel transfer trolley traction device according to claim 1, characterized in that: The flexible connection assembly (3) includes a limiting plate (31), a first threaded rod (32), a first locking nut (33), and a first telescopic spring (34). The inner wall of the main traction frame (11) is provided with an installation groove (111). The two ends of the traction plate (12) are respectively embedded in the corresponding installation groove (111). The two limiting plates (31) are fixed in the installation groove (111) at intervals, and the embedded end of the traction plate (12) is located between the two limiting plates (31). The first threaded rod (32) passes through the two limiting plates (31) and the traction plate (12); The first locking nut (33) is provided at the protruding end of the first threaded rod (32) by means of thread engagement; First telescopic springs (34) are distributed on both sides of the traction plate (12) and sleeved on the first threaded rod (32).

6. The stainless steel transfer trolley traction device according to claim 2, characterized in that: The adjustable connection assembly (4) includes a second threaded rod (41), a second locking nut (42), and a second telescopic spring (43). The traction plate (12) has a waist-shaped hole (121) extending along its length direction, and the second threaded rod (41) is fixed to the outer wall of the U-shaped frame (21) and passes through the waist-shaped hole (121). The second locking nut (42) is provided at the protruding end of the second threaded rod (41) by means of thread engagement; The second telescopic spring (43) is sleeved on the second threaded rod (41) and is located between the traction plate (12) and the U-shaped frame (21).

7. A stainless steel transfer trolley traction device according to claim 6, characterized in that: Two second threaded rods (41) are symmetrically fixed to the outer wall of the U-shaped frame (21) and pass through the corresponding waist-shaped hole (121).

8. The stainless steel transfer trolley traction device according to claim 1, characterized in that: Multiple reinforcing rods (13) are fixed to the inner side of the main traction frame (11).

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