Guard device for a goods lift

Abstract

The utility model relates to a protective device of goods elevator, and upper layer entrance and lower layer entrance all install protective fence no.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to a protective device for a freight elevator. Background Technology

[0002] Freight elevators are specifically designed for vertical transportation of goods, meeting the lifting and lowering needs of industries such as warehousing and logistics. Figure 9 As shown, a traditional guide rail type freight elevator consists of a frame, a lifting platform, a hydraulic drive system, and a transmission mechanism. Its working principle is based on an electric motor driving the hydraulic system; hydraulic oil enters the hydraulic cylinders, propelling the elevator to move up and down. Furthermore, the guide rails serve as a supporting structure, ensuring the elevator runs smoothly along the predetermined track, while the heavy-duty chain and wire rope transmission mechanism guarantees the vertical transport of goods.

[0003] However, the aforementioned guide rail freight elevator lacks a guardrail on the front of the lifting platform, which could cause workers or goods to fall from the front during lifting. Furthermore, the elevator lacks necessary safety measures at the entrances to the upper and lower floors. In practice, some workers may rush in before the elevator is fully stable, increasing the risk of injury from being pinched or falling from the upper floor. Utility Model Content

[0004] The purpose of this utility model is to overcome the technical defects of existing guide rail type lifting freight elevators that lack safety protection devices, and to provide a safety device for freight elevators.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a protective device for a freight elevator, comprising a lifting platform, an upper entrance, and a lower entrance. A first protective railing is installed in both the upper and lower entrances. A second protective railing is installed on the front side of the lifting platform. Both the first and second protective railings include a fixed post and a movable post. The movable post of the first protective railing has a vertical groove on its side wall, a through hole at the bottom of the groove, and a limiting pin inside the through hole. The top of the limiting pin has a magnetic block made of magnetic material. Limiting grooves that cooperate with the limiting pins are provided on the ground of both the upper and lower entrances. A slider is provided on the movable post of the second protective railing corresponding to the groove, and a strong magnet is provided on the bottom surface of the slider. A storage groove is provided on the second protective railing corresponding to the slider, and an elastic hinge is provided inside the storage groove. The slider is installed in the storage groove through the elastic hinge.

[0006] Furthermore, the lifting platform is equipped with an electromagnetic lock, which is used to lock the guardrail.

[0007] Furthermore, the guardrail one and guardrail two also include multiple steel wire ropes. The fixed post is equipped with a rotating rod inside, and multiple rope wheels are fixedly mounted on the rotating rod. One end of the steel wire rope is fixedly connected to the moving post, and the other end is wound around the rope wheel.

[0008] Furthermore, a spring is provided at the bottom of the fixed column, and the two ends of the spring are fixedly connected to the inner wall of the fixed column and the rotating rod, respectively.

[0009] Furthermore, the elastic hinge includes a hinge shaft and a torsion spring, the torsion spring being sleeved on the hinge shaft, and its two ends being fixedly connected to the slider and the storage groove, respectively.

[0010] Furthermore, the bottom of the movable column is provided with a movable block, which is an inverted T-shaped structure. The upper and lower entrances are provided with guide rail grooves that cooperate with the movable block on the ground and the upper lifting platform 1.

[0011] Furthermore, each of the four corners of the bottom of the movable block is provided with a movable wheel, which contacts the inner wall of the guide rail groove.

[0012] Furthermore, the bottom of the side wall of the movable post of the guardrail is provided with an electric wheel, which drives the movable post to move.

[0013] The beneficial effects of this utility model are as follows: This utility model uses a guardrail to block the upper and lower entrances. The guardrail can only be opened after the elevator has stopped and the strong magnet has attracted the limit pin. This prevents some staff from rushing in before the freight elevator is fully stable, which could cause pinching or falling accidents. During the lifting process, the electromagnetic lock locks the guardrail, thereby preventing staff or goods from falling. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a protective device for a freight elevator according to the present invention;

[0015] Figure 2 This is a structural diagram of the lifting platform;

[0016] Figure 3 This is a structural diagram of the lifting platform;

[0017] Figure 4 This is a structural diagram of the upper or lower entrance.

[0018] Figure 5 This is a schematic diagram of the internal structure of the fixed shaft;

[0019] Figure 6 This is an exploded view of the movable post on guardrail number two;

[0020] Figure 7 This is a structural schematic diagram of guardrail one;

[0021] Figure 8 yes Figure 7 Enlarged view of section A;

[0022] Figure 9This is a structural diagram of a guide rail type freight elevator in the existing technology.

[0023] 1. Lifting platform; 2. Upper entrance; 3. Lower entrance; 4. Guardrail 1; 5. Guardrail 2; 6. Fixed column; 7. Moving column; 8. Slide groove; 9. Through hole; 10. Limit pin; 11. Limit groove; 12. Slider; 13. Strong magnet; 14. Storage slot; 15. Steel wire rope; 16. Rotating rod; 17. Rope wheel; 18. Spring; 19. Hinge shaft; 20. Torsion spring; 21. Moving block; 22. Guide rail groove; 23. Moving wheel; 24. Electric wheel; 25. Electromagnetic lock. Detailed Implementation

[0024] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0025] Embodiments of this utility model: such as Figure 1-5 As shown, a safety device for a freight elevator includes a lifting platform 1, an upper entrance 2, and a lower entrance 3. A first safety railing 4 is installed in both the upper entrance 2 and the lower entrance 3. A second safety railing 5 is installed on the front side of the lifting platform 1. Both the first safety railing 4 and the second safety railing 5 include a fixed post 6 and a movable post 7. A vertical groove 8 is provided on the side wall of the movable post 7 of the first safety railing 4. A through hole 9 is provided at the bottom of the groove 8, and a limiting pin 10 is provided inside the through hole 9. A magnetic block made of magnetic material is provided at the top of the limiting pin 10. Limiting grooves 11 that cooperate with the limiting pins 10 are provided on the ground of both the upper entrance 2 and the lower entrance 3. A slider 12 is provided on the movable post 7 of the second safety railing 5 corresponding to the groove 8. A strong magnet 13 is provided on the bottom surface of the slider 12. A storage groove 14 is provided on the second safety railing 5 corresponding to the slider 12. An elastic hinge is provided in the storage groove 14, and the slider 12 is installed in the storage groove 14 through the elastic hinge.

[0026] The lifting platform 1 is equipped with an electromagnetic lock 25, which is used to lock the guardrail 4.

[0027] The guardrail 1 4 and guardrail 2 5 also include multiple steel wire ropes 15. The fixed post 6 is provided with a rotating rod 16. Multiple rope wheels 17 are fixed on the rotating rod 16. One end of the steel wire rope 15 is fixedly connected to the moving post 7, and the other end is wound on the rope wheel 17.

[0028] The bottom of the fixed column 6 is provided with a spring 18, and the two ends of the spring 18 are fixedly connected to the inner wall of the fixed column 6 and the rotating rod 16, respectively.

[0029] like Figure 2 and 6 As shown, the elastic hinge includes a hinge shaft 19 and a torsion spring 20. The torsion spring 20 is sleeved on the hinge shaft 19, and its two ends are fixedly connected to the slider 12 and the storage groove 14, respectively.

[0030] It is worth noting that when the torsion spring 20 is in a free state, the slider 12 is horizontal, and its free end extends out of the storage groove 14. When it is squeezed during its rise or fall, it will rotate upward or downward and retract into the storage groove 14.

[0031] The bottom of the movable column 7 is provided with a movable block 21, which is an inverted T-shaped structure. The upper entrance 2 and the lower entrance 3 are provided with guide rail grooves 22 that cooperate with the movable block 21 on the ground and the upper lifting platform 1.

[0032] Each of the four corners of the bottom of the movable block 21 is provided with a movable wheel 23, and the movable wheel 23 contacts the inner wall of the guide rail groove 22.

[0033] The bottom of the side wall of the movable post 7 of the guardrail 4 is provided with an electric wheel 24, which drives the movable post 7 to move.

[0034] In this specific implementation, before the elevator has completely stopped, the distance between the powerful magnet 13 and the limiting pin 10 has not yet shortened to a level where they can be attracted. Once the elevator stops, the distance between the powerful magnet 13 and the limiting pin 10 shortens to a level where they can be attracted, and the limiting pin 10 is attracted and disengaged from the limiting groove 11. At this time, the electromagnetic lock 25 is opened, and the spring 18 drives the rope wheel 17 to rotate, winding the wire rope 15 onto the rope wheel 17, while simultaneously pulling the moving column 7 to move, opening the elevator entrance. After entering the elevator, the electric wheel 24 drives the moving column 7 to move to the other side, blocking the elevator entrance. Then, the electromagnetic lock 25 locks the second guardrail 5, and the limiting column 7 locks the first guardrail 4, allowing the lifting platform 1 to move up and down. During the process of the lifting platform 1 moving from the lower floor to the upper floor, the slider 12 is squeezed by the ground of the upper entrance 2 and retracts into the storage groove 14. Once the slider 12 enters the slide groove 8, it will be reset under the push of the torsion spring 20. Conversely, as the lifting platform 1 descends from the upper level to the lower level, the slider 12 is pressed by the bottom edge of the slide 8 and retracts into the storage slot 14. When the slider 12 leaves the upper entrance 2, it is also reset by the action of the torsion spring 20.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. Guard device for a goods lift, comprising a lifting platform (1), an upper landing (2) and a lower landing (3), characterized in that: Both the upper entrance (2) and the lower entrance (3) are equipped with guardrail 1 (4), and guardrail 2 (5) is installed on the front side of the lifting platform (1). Both guardrail 1 (4) and guardrail 2 (5) include a fixed post (6) and a movable post (7). The movable post (7) of guardrail 1 (4) has a vertical groove (8) on its side wall. The bottom of the groove (8) has a through hole (9), and the through hole (9) has a limiting pin (10) inside. The top of the limiting pin (10) is equipped with a magnetic attraction made of magnetic material. The upper entrance (2) and lower entrance (3) are provided with limiting grooves (11) that cooperate with limiting pins (10) on the ground. The movable column (7) of the second guardrail (5) is provided with a slider (12) corresponding to the sliding groove (8). The bottom surface of the slider (12) is provided with a strong magnet (13). The second guardrail (5) is provided with a storage groove (14) corresponding to the slider (12). The storage groove (14) is provided with an elastic hinge. The slider (12) is installed in the storage groove (14) through the elastic hinge.

2. A guard for a goods lift according to claim 1, characterised in that: The lifting platform (1) is equipped with an electromagnetic lock (25), which locks the guardrail (4).

3. A guard for a goods lift according to claim 2, wherein: The first guardrail (4) and the second guardrail (5) also include multiple steel wire ropes (15). The fixed post (6) is provided with a rotating rod (16). Multiple rope wheels (17) are fixed on the rotating rod (16). One end of the steel wire rope (15) is fixedly connected to the moving post (7), and the other end is wound around the rope wheel (17).

4. The safety device for a freight elevator according to claim 3, characterized in that: The bottom of the fixed column (6) is provided with a spring (18), and the two ends of the spring (18) are fixedly connected to the inner wall of the fixed column (6) and the rotating rod (16) respectively.

5. A protective device for a freight elevator according to claim 1, characterized in that: The elastic hinge includes a hinge shaft (19) and a torsion spring (20). The torsion spring (20) is sleeved on the hinge shaft (19), and its two ends are fixedly connected to the slider (12) and the storage groove (14) respectively.

6. The protective device for a freight elevator according to claim 1, characterized in that: The bottom of the movable column (7) is provided with a movable block (21), which is an inverted T-shaped structure. The upper entrance (2) and the lower entrance (3) are provided with guide rail grooves (22) that cooperate with the movable block (21) on the ground and the lifting platform (1).

7. A protective device for a freight elevator according to claim 6, characterized in that: The four corners of the bottom of the movable block (21) are provided with movable wheels (23), and the movable wheels (23) are in contact with the inner wall of the guide rail groove (22).

8. A protective device for a freight elevator according to claim 7, characterized in that: The bottom of the side wall of the movable post (7) of the guardrail (4) is provided with an electric wheel (24), which drives the movable post (7) to move.

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