A lever link for a traction mechanism

Abstract

The utility model discloses a lever type connecting rod for traction mechanism, including the bottom plate, the left -hand side fixed connection of bottom plate top has the hanging bar, the upper end of hanging bar is established with the card slot, the surface swing joint of card slot has the card block, the right side fixed connection of card block has the U shaped guide rod. The utility model discloses through the setting of bottom plate and hanging bar, can be connected between the traction car at the same time, makes the hanging bar can hang the traction frame of the luggage car, and through the setting of card block and card slot, can be positioned between fixed shell and hanging bar, avoid the fixed shell and open from the top of hanging bar and have the unhooking accident, and through the setting of U shaped guide rod, guide slot, stand, connecting rod, cross axle, U shaped handle and fixed axle, personnel can drive card block from the surface of card slot under the rotation of U shaped handle and drive under the rotation of U shaped handle, thereby convenient personnel open the fixed shell from the top of hanging bar and bottom plate.

Description

Technical Field

[0001] This utility model relates to the technical field of airport baggage towing vehicle traction mechanisms, specifically a lever-type connecting rod for a traction mechanism. Background Technology

[0002] In the airport baggage transportation system, airport baggage tractors play a crucial role, undertaking the task of efficiently transporting large amounts of baggage between various areas of the airport. As a key component connecting airport baggage tractors with baggage trailers and other towed equipment, the stability of the coupler's performance directly affects the safety and efficiency of the entire baggage transportation process.

[0003] In the current design of airport baggage towing vehicles, the hook position generally relies on the cooperation between the hook and the slot to limit the baggage cart towing frame. However, when the towing vehicle encounters bumps, rapid acceleration, sudden braking or turning during operation, the hook will be subjected to forces from different directions. Under the action of these complex forces, this single limiting structure is prone to limiting failure, resulting in a hook-off accident. Utility Model Content

[0004] The purpose of this utility model is to provide a lever-type connecting rod for a traction mechanism, which has a double limiting structure, effectively reducing the probability of disengagement during use and improving the safety of traction operations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lever-type connecting rod for a traction mechanism, comprising a base plate, a hanging rod fixedly connected to the left end of the top of the base plate, a slot formed at the upper end of the hanging rod, a locking block movably connected to the surface of the slot, a U-shaped guide rod fixedly connected to the right side of the locking block, a fixed shell placed at the top of the hanging rod, a vertical rod movably inserted through the middle of the top of the fixed shell, a guide groove formed at the lower end of the vertical rod, the right end of the U-shaped guide rod movably connected to the upper end of the guide groove, and a connecting rod hinged to the upper end of the vertical rod via a pin. A horizontal shaft is movably inserted at the left end of the connecting rod. A U-shaped handle is fixedly connected between the two sides of the horizontal shaft. A fixed shaft is movably inserted at the right end of both sides of the U-shaped handle. The bottom of the fixed shaft is fixedly connected to the right end of the top of the outer surface of the fixed shell. A pin groove is opened on the surface of the fixed shaft. A through groove is opened at the left end of both sides of the U-shaped handle. A pull rod is slidably connected between the left ends of the two through grooves. A compression spring is fixedly connected between the right side of the pull rod and the right side of the through groove. A pin is fixedly connected to both ends of the right side of the pull rod. The right side of the pin is movably connected to the surface of the pin groove.

[0006] As a preferred embodiment, mounting holes are provided on all four sides of the base plate, and mounting bolts are movably inserted into the surface of the mounting holes.

[0007] As a preferred embodiment, guide slide rods are fixedly connected to both sides of the inner cavity of the fixed shell, and the guide slide rods slide through the side of the locking block.

[0008] As a preferred embodiment, a guide sleeve is fixedly connected to the right end of the pin, and the inner cavity of the guide sleeve is slidably connected to the right end of the U-shaped handle.

[0009] As a preferred embodiment, a connecting shaft is fixedly connected to the right end of the top of the base plate, and the right end of the bottom of the fixed shell is movably inserted into the surface of the connecting shaft.

[0010] As a preferred embodiment, a pressure plate is fixedly connected to the lower end of the outer surface of the fixed shell.

[0011] As a preferred embodiment, the guide groove is inclined.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model, through the setting of the base plate and the hanging rod, can connect with the towing vehicle while allowing the hanging rod to suspend the towing frame of the luggage cart. The setting of the locking block and the locking groove can limit the movement between the fixed shell and the hanging rod, preventing the fixed shell from opening from above the hanging rod and causing a disengagement accident. Simultaneously, through the setting of the U-shaped guide rod, guide groove, upright rod, connecting rod, horizontal shaft, U-shaped handle, and fixed shaft, the locking block can be disengaged from the surface of the locking groove by the operator pulling the U-shaped handle to rotate it. This facilitates the operator opening the fixed shell from above the hanging rod and the base plate. The setting of the through groove, pressure spring, pull rod, pin rod, and pin groove can lock and limit the movement between the U-shaped handle and the fixed shaft when not operated by personnel, preventing the locking block from disengaging from the surface of the locking groove due to the rotation of the U-shaped handle. This greatly reduces the probability of the towing frame loosening due to the fixed shell opening during towing. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a front sectional view of the present invention.

[0016] Figure 3 This is a schematic diagram of the upright structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the pin structure of this utility model.

[0018] In the diagram: 1. Base plate; 2. Mounting hole; 3. Pressure plate; 4. Fixing shell; 5. Fixing shaft; 6. Upright pole; 7. U-shaped handle; 8. Connecting rod; 9. Horizontal shaft; 10. Guide slide rod; 11. Connecting shaft; 12. Locking block; 13. Hanging rod; 14. Locking groove; 15. Through groove; 16. Pin rod; 17. Pull rod; 18. Compression spring; 19. Guide sleeve; 20. Guide groove; 21. U-shaped guide rod; 22. Pin groove. Detailed Implementation

[0019] 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.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0021] The components in this application, such as base plate 1, mounting hole 2, pressure plate 3, fixing shell 4, fixing shaft 5, upright 6, U-shaped handle 7, connecting rod 8, horizontal shaft 9, guide slide rod 10, connecting shaft 11, locking block 12, hanging rod 13, locking groove 14, through groove 15, pin rod 16, pull rod 17, pressure spring 18, guide sleeve 19, guide groove 20, U-shaped guide rod 21, and pin groove 22, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0022] Example 1:

[0023] Please see Figures 1-4As shown, this utility model provides a lever-type connecting rod for a traction mechanism, including a base plate 1. A hanging rod 13 is fixedly connected to the left end of the top of the base plate 1. A slot 14 is provided at the upper end of the hanging rod 13. A locking block 12 is movably connected to the surface of the slot 14. A U-shaped guide rod 21 is fixedly connected to the right side of the locking block 12. A fixing shell 4 is placed on the top of the hanging rod 13. A vertical rod 6 is movably inserted through the middle of the top of the fixing shell 4. A guide groove 20 is provided at the lower end of the vertical rod 6. The right end of the U-shaped guide rod 21 is movably connected to the upper end of the guide groove 20. A connecting rod 8 is hinged to the upper end of the vertical rod 6 by a pin. The left end of the connecting rod 8 is movably connected to the connecting rod 8. A horizontal shaft 9 is inserted, and a U-shaped handle 7 is fixedly connected between the two sides of the horizontal shaft 9. A fixed shaft 5 is movably inserted at the right end of both sides of the U-shaped handle 7. The bottom of the fixed shaft 5 is fixedly connected to the right end of the top of the outer surface of the fixed shell 4. A pin groove 22 is opened on the surface of the fixed shaft 5. A through groove 15 is opened at the left end of both sides of the U-shaped handle 7. A pull rod 17 is slidably connected between the left ends of the two through grooves 15. A pressure spring 18 is fixedly connected between the right side of the pull rod 17 and the right side of the through groove 15. A pin 16 is fixedly connected at both ends of the right side of the pull rod 17. The right side of the pin 16 is movably connected to the surface of the pin groove 22.

[0024] In this technical solution, during use, after the base plate 1 is installed to the rear of the tractor, the left end of the U-shaped handle 7 is gripped while the pull rod 17 is pulled to the left along the surface of the through groove 15. The movement of the through groove 15 can drive the pin 16 to move and stretch the pressure spring 18 until the pin 16 can disengage from the pin groove 22 on the fixed shaft 5. Then, the person can lift the left end of the U-shaped handle 7 and rotate it along the surface of the fixed shaft 5. Lifting the U-shaped handle 7 can drive the horizontal shaft 9 and the connecting rod 8 to move, thereby driving the upright rod 6 and the guide groove 20 to move upward. While the guide groove 20 is moving, it can push the U-shaped guide rod 21 and the locking block 12 to the right through the inclined plane, causing the locking block 12 to disengage from the surface of the locking groove 14. Then, pulling the U-shaped handle 7 upward will cause the fixed shell 4 to rotate and open from above the base plate 1 and the hanging rod 13, and suspend the towing frame of the luggage cart onto the hanging rod 1. After three steps, the fixed housing 4 is reset based on the operation of the U-shaped handle 7. By pressing down the U-shaped handle 7 to rotate, the upright 6 and guide groove 20 can be moved downward through the horizontal axis 9 and connecting rod 8. The movement of the guide groove 20 can push the U-shaped guide rod 21 and the locking block 12 to the left through the inclined plane, so that the locking block 12 can be inserted into the locking groove 14. This locks and limits the rotational opening direction of the fixed housing 4. At the same time, by stopping the pulling rod 17 and under the action of the pressure spring 18, the pulling rod 17 and pin 16 can be moved to the right, so that the pin 16 can be inserted into the pin groove 22 on the fixed shaft 5. This limits the rotational direction of the U-shaped handle 7, preventing the U-shaped handle 7 from rotating due to accidental contact or force and causing the locking block 12 to disengage from the locking groove 14. This also effectively avoids the fixed housing 4 from rotating and opening, which could lead to a disengagement accident, and greatly improves the overall safety of use.

[0025] It should be noted that the initial state of the compression spring 18 is the stretched state, which allows the compression spring 18 to generate a large pulling force on the pull rod 17 and the pin 16, so that the pin 16 can be inserted into the pin groove 22 with a large force, reducing the probability of the pin 16 coming loose from the pin groove 22 due to non-human pulling.

[0026] Example 2:

[0027] Based on Embodiment 1, this utility model is as follows: Figures 1-3As shown, mounting holes 2 are provided around the base plate 1. Mounting bolts are movably inserted into the surface of the mounting holes 2. Guide slide rods 10 are fixedly connected to both sides of the inner cavity of the fixed shell 4. The guide slide rods 10 slide through the side of the locking block 12. The right end of the pin 16 is fixedly connected to the guide sleeve 19. The inner cavity of the guide sleeve 19 is slidably connected to the right end of the U-shaped handle 7. The right end of the top of the base plate 1 is fixedly connected to the connecting shaft 11. The right end of the bottom of the fixed shell 4 is movably inserted into the surface of the connecting shaft 11. The lower end of the outer surface of the fixed shell 4 is fixedly connected to the pressure plate 3. The guide groove 20 is inclined.

[0028] In this technical solution, the mounting holes 2 and mounting bolts facilitate the installation and fixing of the base plate 1 to the rear of the tractor. The guide slide rod 10 supports and guides the locking block 12, preventing it from tilting during movement. The guide sleeve 19 supports and guides the right end of the pin 16, preventing it from bending under stress. The connecting shaft 11 connects the fixed shell 4 to the right end of the base plate 1, allowing the fixed shell 4 to rotate around the connecting shaft 11 during opening.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A lever-type connecting rod for a traction mechanism, comprising a base plate (1), characterized in that: A hanging rod (13) is fixedly connected to the left end of the top of the base plate (1). A slot (14) is provided at the upper end of the hanging rod (13). A locking block (12) is movably connected to the surface of the slot (14). A U-shaped guide rod (21) is fixedly connected to the right side of the locking block (12). A fixed shell (4) is placed on the top of the hanging rod (13). A vertical rod (6) is movably inserted through the middle of the top of the fixed shell (4). A guide groove (20) is provided at the lower end of the vertical rod (6). The right end of the U-shaped guide rod (21) is movably connected to the upper end of the guide groove (20). A connecting rod (8) is hinged to the upper end of the vertical rod (6) by a pin. A horizontal shaft (9) is movably inserted through the left end of the connecting rod (8). A U-shaped handle (7) is fixedly connected between the two sides of the U-shaped handle (7). A fixed shaft (5) is movably inserted at the right end of both sides of the U-shaped handle (7). The bottom of the fixed shaft (5) is fixedly connected to the right end of the top of the outer surface of the fixed shell (4). A pin groove (22) is opened on the surface of the fixed shaft (5). A through groove (15) is opened at the left end of both sides of the U-shaped handle (7). A pull rod (17) is slidably connected between the left ends of the two through grooves (15). A pressure spring (18) is fixedly connected between the right side of the pull rod (17) and the right side of the through groove (15). A pin (16) is fixedly connected at both ends of the right side of the pull rod (17). The right side of the pin (16) is movably connected to the surface of the pin groove (22).

2. The lever-type connecting rod for a traction mechanism according to claim 1, characterized in that: Mounting holes (2) are provided around the base plate (1), and mounting bolts are movably inserted into the surface of the mounting holes (2).

3. A lever-type connecting rod for a traction mechanism according to claim 1, characterized in that: Guide slide rods (10) are fixedly connected to both sides of the inner cavity of the fixed shell (4), and the guide slide rods (10) slide through the side of the locking block (12).

4. A lever-type connecting rod for a traction mechanism according to claim 1, characterized in that: The right end of the pin (16) is fixedly connected to a guide sleeve (19), and the inner cavity of the guide sleeve (19) is slidably connected to the right end of the U-shaped handle (7).

5. A lever-type connecting rod for a traction mechanism according to claim 1, characterized in that: The top right end of the base plate (1) is fixedly connected to a connecting shaft (11), and the bottom right end of the fixed shell (4) is movably inserted into the surface of the connecting shaft (11).

6. A lever-type connecting rod for a traction mechanism according to claim 1, characterized in that: A pressure plate (3) is fixedly connected to the lower end of the outer surface of the fixed shell (4).

7. A lever-type connecting rod for a traction mechanism according to claim 1, characterized in that: The guide groove (20) is inclined.

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