Automatic limiting device for elevator platform

Abstract

The utility model discloses an automatic limiting device for an elevator platform, which relates to the technical field of wine product production and comprises a linear driver, a connecting part, a limiting rod and a limiting structure of a limiting beam. Limiting beams are fixedly arranged at the positions, corresponding to the limiting rods, of sliding rails of the elevator. A fixed part of the linear driver is fixedly mounted at the bottom of the platform, and an output end is connected with the front end of the limiting rod through a connecting part; when the limiting rods are erected on the limiting beams, the platform can be locked at the position where the upper surface is flush with the upper surface of the floor support plate. After the platform is lifted in place, the limiting rods are driven by the linear drivers to stretch out and be erected on the limiting beams, and the platform is locked at the position where the upper surface is flush with the upper surface of the floor support plate, so that the whole stack of wine bottles can smoothly enter and exit from the platform, and the production continuity is further guaranteed; the potential safety hazard that a wine bottle falls off to hurt a worker due to dislocation of the elevator is eliminated, meanwhile, dislocation shutdown of the elevator does not need to be maintained by the worker, and the labor intensity of the worker is reduced.

Description

An automatic limit device for a hoist platform Technical Field

[0001] This utility model relates to the field of wine production technology, specifically to a limiting device for locking the position of a lifting platform. Background Technology

[0002] Wine is a liquid made from grains through fermentation. Its main chemical component is ethanol, and it generally contains trace amounts of fusel oils. It is a beverage with cultural characteristics.

[0003] Wine products are mostly bottled and packaged. During production, bottles are transported in stacks by elevators. In existing technology, elevators typically use hydraulic rods to drive the platform's lifting and lowering. Once the platform is in position, the self-locking function of the hydraulic rods locks it in place. However, in actual production, the locking mechanism is not ideal. Locking failure can easily lead to misalignment of the platform's floor deck, causing the entire stack of bottles to become stuck on the platform. This directly affects production continuity and requires additional labor for repairs. When locking failure occurs during the transfer of bottles to the conveyor, the entire stack of bottles can tilt and scatter, impacting production efficiency and posing safety hazards. Summary of the Invention

[0004] This invention aims to overcome the shortcomings of the existing technology by providing an automatic limiting device for a hoist platform.

[0005] The present invention adopts the following technical solution to solve the technical problem: an automatic limiting device for a hoist platform, wherein an opening is provided on the floor deck, the hoist is installed at the opening, the platform of the hoist can move up or down, and a limiting structure including a linear drive, a connecting part, a limiting rod and a limiting beam is provided;

[0006] The limiting beam is fixed on the slide rail of the hoist at a position corresponding to the limiting rod;

[0007] The fixing part of the linear actuator is installed and fixed to the bottom of the platform, and the output end is installed and connected to the front end of the limiting rod through the connecting part;

[0008] The linear actuator outputs a drive to extend the limiting rod along its own axis to the rear end of the limiting rod and reach above the limiting beam, or to retract the limiting rod until it is completely inside the limiting beam.

[0009] When the limiting rod is mounted on the limiting beam, it can lock the platform at a position where the upper surface is flush with the upper surface of the floor deck.

[0010] Furthermore, a frame is provided along the edge of the bottom of the platform, and a through clearance hole is opened on the frame at a position corresponding to the axis of the limiting rod; the limiting rod is inserted into the clearance hole.

[0011] When the limit rod is installed above the limit beam to lock the position of the platform, the clearance hole can share part of the force transmitted to the linear actuator under the weight of the platform, improve the stability of the limit device and extend the service life of the limit device.

[0012] Furthermore, a guide sleeve is provided inside the limiting hole, and the limiting rod is correspondingly inserted into the guide sleeve.

[0013] Furthermore, the limiting structure also includes a balance bar;

[0014] The connecting part is a connecting fork, and the output end of the linear actuator is rotatably connected to the front end of the limiting rod through the connecting fork, forming a rotating pair that allows the rear end of the limiting rod to swing up or down.

[0015] The balance bar is located below the limiting bar and is fixed to the frame to limit the downward movement of the limiting bar; the rotatable connection between the connecting fork and the limiting bar allows the limiting bar to swing upward to accommodate small deviations that may occur during the positioning process.

[0016] Furthermore, the hoist is provided with a pair of symmetrically arranged slide rails, on which a sliding beam is slidably mounted, forming a sliding pair that supports the upward or downward sliding of the sliding beam; the sliding beam is installed and connected to the output end of the hydraulic rod.

[0017] The platform is located between a pair of slide rails and is installed and connected to a pair of slide beams; the hydraulic rod output drives the slide beams to slide up or down to drive the platform to rise or fall in a linear motion.

[0018] Furthermore, it is also equipped with steel wire ropes and rollers;

[0019] The platform is located below the sliding beam, and the roller is rotatably mounted on the sliding beam. The steel wire rope is tensioned and wound around the roller, with both ends connected to the platform, thus connecting the sliding beam to the platform.

[0020] Furthermore, a guide slider is also provided;

[0021] The guide slider is slidably mounted onto the slide rail and fixedly installed with the platform.

[0022] A sliding pair is formed between the guide slider and the slide rail to support the guide slider to slide up or down; the guide slider is used to limit and guide the platform's upward or downward movement to improve the stability of the platform's movement.

[0023] Furthermore, the slide rail has a portal-shaped structure, and both ends of the sliding beam are slidably fitted with the slide rail;

[0024] The guide sliders are arranged in pairs symmetrically, and each pair of guide sliders is slidably installed with the two sides of the slide rail.

[0025] Furthermore, four sets of limiting structures are installed on the platform, and the four sets of limiting structures are symmetrically arranged in pairs on both sides of the platform.

[0026] Furthermore, the connecting fork is connected to the output end of the linear driver via a pin to ensure easy assembly and disassembly.

[0027] This utility model provides an automatic limit device for a hoist platform, which has the following advantages:

[0028] 1. After the platform is lifted into place, the present invention uses a linear actuator to drive the limiting rod to extend and be mounted on the limiting beam, locking the platform at a position where the upper surface is flush with the upper surface of the floor deck, so as to ensure that the entire stack of wine bottles can smoothly enter and exit the platform, thereby ensuring the continuity of production and improving production efficiency.

[0029] 2. This utility model avoids the hoist shutdown caused by misalignment between the platform and the floor deck, eliminates the need for staff to maintain the hoist in case of misalignment, reduces the labor intensity of staff, and helps control labor costs.

[0030] 3. This utility model can effectively prevent the bottles from tipping over and falling due to misalignment between the platform and the floor deck during the process of moving stacks of bottles in and out of the platform, thus eliminating the safety hazard of bottles injuring workers. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the isometric structure of this utility model;

[0032] Figure 2 is a schematic diagram of the structure of this utility model from below;

[0033] Figure 3 is a partially enlarged isometric structural schematic diagram of this utility model.

[0034] In the picture:

[0035] 1. Hoist; 11. Platform; 12. Slide rail; 13. Sliding beam; 14. Hydraulic rod; 15. Guide slider; 2. Linear actuator; 3. Connecting part; 4. Limiting rod; 5. Balance bar; 6. Guide sleeve; 7. Limiting beam; 8. Floor decking. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] An automatic limiting device for a hoist platform, as shown in Figures 1-3, has the following structural relationship: An opening is provided in the floor deck, and the hoist 1 is installed at the opening. The hoist 1 has a pair of symmetrically arranged slide rails 12, on which a sliding beam 13 is slidably mounted, forming a sliding pair that supports the upward or downward sliding of the sliding beam 13. The platform 11 is located between the pair of slide rails 12 and below the sliding beam 13. Rollers are rotatably mounted on the sliding beam 13, and a tensioned steel wire rope is wound around the rollers, with both ends connected to the platform 11, thus connecting the sliding beam 13 to the platform 11. The sliding beam 13 is connected to the output end of a hydraulic rod 14, which drives the sliding beam 13 to slide upward or downward, thereby causing the platform 11 to move linearly upward or downward. The guide slider 15 is slidably mounted on the slide rail 12 and fixed to the platform 11; a sliding pair is formed between the guide slider 15 and the slide rail 12 to support the guide slider 15 to slide up or down; the guide slider 15 is used to limit and guide the upward or downward movement of the platform 11 to improve the stability of the movement of the platform 11.

[0038] Preferably, the slide rail 12 has a gate-shaped structure, and both ends of the sliding beam 13 are slidably fitted with the slide rail 12; the guide sliders 15 are arranged in pairs symmetrically, and a pair of guide sliders 15 are slidably fitted with both sides of the slide rail 12 respectively.

[0039] The system includes a limiting structure comprising a linear actuator 2, a connecting part 3, a limiting rod 4, and a limiting beam 7. A limiting beam 7 is fixed to the slide rail 12 of the hoist 1 at a position corresponding to the limiting rod 4. The fixing part of the linear actuator 2 is installed and fixed to the bottom of the platform 11, and its output end is connected to the front end of the limiting rod 4 via the connecting part 3. The output of the linear actuator 2 drives the limiting rod 4 to extend outward along its own axis to the rear end of the limiting rod 4 above the limiting beam 7, or drives the limiting rod 4 to retract until it is completely inside the limiting beam 7. When the limiting rod 4 is mounted on the limiting beam 7, it can lock the platform 11 at a position where its upper surface is flush with the upper surface of the floor deck 8.

[0040] Preferably, a frame is provided along the edge of the bottom of the platform 11, and a through clearance hole is opened on the frame at the position corresponding to the axis of the limiting rod 4. A guide sleeve 6 is provided in the limiting hole, and the limiting rod 4 is inserted into the guide sleeve 6 accordingly. The guide sleeve 6 is a self-lubricating wear-resistant bushing, which allows the limiting rod 4 to extend and retract smoothly without jamming. When the limiting rod 4 is mounted above the limiting beam 7 to lock the position of the platform 11, the clearance hole can share part of the force transmitted to the linear actuator 2 under the action of the platform's gravity, improve the stability of the limiting device, and help extend the service life of the limiting device.

[0041] Preferably, the connecting part 3 is a connecting fork. The output end of the linear actuator 2 is rotatably connected to the front end of the limiting rod 4 via the connecting fork, forming a rotating pair that allows the rear end of the limiting rod 4 to swing up or down. The connecting fork is connected to the output end of the linear actuator 2 via a pin to ensure easy assembly and disassembly. The balance bar 5 is located below the limiting rod 4 and is fixed to the frame to limit the downward movement of the limiting rod 4. The balance bar 5 is made of stainless steel with a smooth surface, allowing the limiting rod 4 to extend and retract smoothly without jamming. The rotatable connection between the connecting fork and the limiting rod 4 allows the limiting rod 4 to swing upward to accommodate small deviations that may occur during positioning.

[0042] The following example, using platform lifting as an example, illustrates the working principle of the automatic limit device for the hoist platform, specifically including the following processes:

[0043] In the first step, a pair of hydraulic rods 14 of the hoist work together to drive a pair of sliding beams 13 to move synchronously upward along the slide rail 12. The platform 11 is then driven by the steel wire rope to rise under the guidance and limiting action of the guide slider 15 until the upper surface of the platform 11 is slightly higher than the upper surface of the floor deck of the target floor.

[0044] In the second step, the linear actuator 2 drives the limiting rod 4 to extend outward under the limiting action of the balance bar 5, so that the limiting rod 4 moves above the limiting beam 7.

[0045] The third step involves the hydraulic rod 14 causing the platform 11 to sink slightly, so that the limit rod 4 is mounted on the top of the limit beam 7, thus locking the position (height) of the platform 11.

[0046] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic limiting device for a hoist platform, wherein an opening is provided on a floor deck (8), a hoist (1) is installed at the opening, and the platform (11) of the hoist (1) is capable of rising or falling, characterized in that: The system includes a limiting structure comprising a linear actuator (2), a connecting part (3), a limiting rod (4), and a limiting beam (7); the limiting beam (7) is fixed on the slide rail (12) of the hoist (1) at a position corresponding to the limiting rod (4); the fixing part of the linear actuator (2) is installed and fixed to the bottom of the platform (11), and the output end is connected to the front end of the limiting rod (4) through the connecting part (3); the linear actuator (2) outputs a drive to extend the limiting rod (4) outward along its own axis to the rear end of the limiting rod (4) and reach above the limiting beam (7), or drives the limiting rod (4) to retract until the limiting rod (4) is completely inside the limiting beam (7); when the limiting rod (4) is mounted on the limiting beam (7), it can lock the platform (11) at a position where the upper surface is flush with the upper surface of the floor deck (8).

2. The automatic limiting device for a hoist platform according to claim 1, characterized in that: The platform (11) has a frame along its edge at the bottom, and a through clearance hole is opened on the frame at a position corresponding to the axis of the limiting rod (4); the limiting rod (4) is inserted into the clearance hole.

3. The automatic limiting device for a hoist platform according to claim 2, characterized in that: The limiting hole is provided with a guide sleeve (6), and the limiting rod (4) is correspondingly inserted into the guide sleeve (6).

4. The automatic limiting device for a hoist platform according to claim 1, characterized in that: The limiting structure also includes a balance bar (5); the connecting part (3) is a connecting fork, and the output end of the linear actuator (2) is rotatably connected to the front end of the limiting rod (4) through the connecting fork, forming a rotating pair between them that allows the rear end of the limiting rod (4) to swing up or down; the balance bar (5) is located below the limiting rod (4) and is fixed to the frame to limit the downward movement of the limiting rod (4).

5. The automatic limiting device for a hoist platform according to claim 1, characterized in that: The hoist (1) is provided with a pair of symmetrically arranged slide rails (12), and a sliding beam (13) is slidably installed on the slide rails (12), forming a sliding pair between the two to support the sliding beam (13) to slide upward or downward; the sliding beam (13) is installed and connected to the output end of the hydraulic rod (14); the platform (11) is located between the pair of slide rails (12) and is installed and connected to the pair of sliding beams (13); the output of the hydraulic rod (14) drives the sliding beam (13) to slide upward or downward to drive the platform (11) to rise or fall in a linear motion.

6. The automatic limiting device for a hoist platform according to claim 5, characterized in that: It is also equipped with a wire rope and rollers; the platform (11) is located below the sliding beam (13), the rollers are rotatably installed on the sliding beam (13), the wire rope is tensioned and wound around the rollers, and both ends are installed and connected to the platform (11) to hang the sliding beam (13) and the platform (11).

7. The automatic limiting device for a hoist platform according to claim 6, characterized in that: A guide slider (15) is also provided; the guide slider (15) is slidably mounted on the slide rail (12) and fixedly installed with the platform (11); a sliding pair is formed between the guide slider (15) and the slide rail (12) to support the guide slider (15) to slide up or down.

8. The automatic limiting device for a hoist platform according to claim 7, characterized in that: The slide rail (12) has a gate-shaped structure, and both ends of the sliding beam (13) are slidably fitted with the slide rail (12); the guide sliders (15) are arranged in pairs symmetrically, and the pair of guide sliders (15) are slidably fitted with both sides of the slide rail (12) respectively.

9. The automatic limit device for a hoist platform according to claim 4, characterized in that: The platform (11) is equipped with four sets of limiting structures, which are symmetrically arranged in pairs on both sides of the platform (11).

10. An automatic limiting device for a hoist platform according to claim 4, characterized in that: The connecting fork is connected to the output end of the linear driver (2) via a pin.

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