A reciprocating elevator

Abstract

The utility model relates to the field of reciprocating elevator discloses a reciprocating elevator, including outer frame, the outer frame outside fixedly connected with the cat ladder, the upper frame inner wall fixedly connected with the lifting motor, the lifting motor output shaft outside is provided with multiple groups of tooth disc, multiple groups tooth disc outside transmission connection has multiple groups of chain, and one end of multiple groups chain is fixedly connected with the trolley frame of sliding connection in the outer frame outside. In the utility model, through the optimization of the upper frame of the lifting machine, the space height above the lifting machine is greatly reduced, which creates favorable conditions for users to improve the storage rate of goods, the top cover realizes the sliding through the slide rail, is convenient for opening and closing, and the setting of the limiting assembly can effectively limit the top cover, the operation is flexible and convenient, and the maintenance efficiency of the equipment is not affected, at the same time, the dust and sundries directly falling into the equipment interior are reduced, and the cleanliness of the operation environment is improved.

Description

Technical Field

[0001] This utility model relates to the field of reciprocating elevators, and more particularly to a reciprocating elevator. Background Technology

[0002] A reciprocating lift (or hoist) is a lifting device driven by a motor or hydraulic system, using chains or hydraulic cylinders to move a lifting car up and down reciprocally. Its control system is stable and safe, with high positioning accuracy and reliable performance. It enables bidirectional material flow in one cycle and is suitable for logistics, food, e-commerce, and other fields.

[0003] Traditional elevator frame structures typically occupy significant vertical space, especially in warehousing environments. The unused space above the equipment cannot be used for goods storage, resulting in low utilization of warehouse space. In space-constrained warehousing scenarios, this deficiency directly limits the density of goods storage and increases operating costs. Furthermore, some elevators lack dust covers for ease of maintenance, allowing dust and debris to fall directly into the lifting motor, chain, and other transmission components, accelerating mechanical wear and increasing the frequency of failures. Some elevators use bolts to install dust covers on top, but due to limited space, there is insufficient space to place the dust covers after removal, which also affects the efficiency of equipment maintenance. Therefore, a reciprocating elevator is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a reciprocating lift, which aims to improve the problems of "low utilization of top space and inconvenient dust prevention and maintenance" in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a reciprocating lifting machine, comprising an outer frame, a ladder fixedly connected to the outer side of the outer frame, a lifting motor fixedly connected to the inner wall of the upper frame, multiple sets of toothed discs arranged on the outer side of the output shaft of the lifting motor, multiple sets of chains drivingly connected to the outer side of the multiple sets of toothed discs, a trolley frame slidably connected to one end of the multiple sets of chains, a counterweight box fixedly connected to the other end of the chains, a conveyor arranged inside the trolley frame, the counterweight box slidably connected to the surface of the outer frame via pulleys, slide rails symmetrically fixedly connected to the front and rear sides of the upper frame, a top cover slidably connected to the inner wall of the slide rail, a limit assembly fixedly connected to the upper part of the slide rail; the limit assembly includes a fixing member fixedly connected to the upper part of the slide rail, a pull rod movably connected to the inner wall of the fixing member, a slot opened on the upper part of the fixing member near the periphery of the pull rod, a spring arranged on the inner wall of the slot, a limit plate a fixedly connected to the lower part of the pull rod, and a limit plate b fixedly connected to the right side of the top cover near the limit plate a.

[0006] As a further description of the above technical solution:

[0007] Multiple sets of the limiting plate b are provided, and one set of the limiting plate b is fixedly connected to the outer left side of the slide rail.

[0008] As a further description of the above technical solution:

[0009] The upper part of the pull rod is T-shaped, and the cross-section of the upper part of the T-shaped vertical rod is elliptical. A sliding groove is provided around the outer side of the elliptical part of the pull rod, and the elliptical part of the pull rod is inserted into the slot.

[0010] As a further description of the above technical solution:

[0011] A circular baffle is provided on the lower outer side of the pull rod.

[0012] As a further description of the above technical solution:

[0013] One end of the spring contacts the upper surface of the circular baffle of the pull rod, and the other end of the spring contacts the inner surface of the slot.

[0014] As a further description of the above technical solution:

[0015] Ventilation openings are provided on the outer side of the upper frame and the upper part of the top cover.

[0016] As a further description of the above technical solution:

[0017] The outer side of the top cover is provided with reinforcing ribs.

[0018] As a further description of the above technical solution:

[0019] The slide rail extends to the outside of the upper frame on the left side.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by optimizing the upper frame of the elevator, the height of the space above the elevator is greatly reduced, creating favorable conditions for users to improve the storage rate of goods. The top cover slides through the slide rail, which is convenient to open and close. The setting of the limiting component can effectively limit the top cover, making the operation flexible and convenient, without affecting the maintenance efficiency of the equipment. At the same time, it reduces the direct fall of dust and debris into the equipment, improving the cleanliness of the operating environment.

[0022] 2. In this utility model, the height of the limiting plate a can be limited by the engagement of the pull rod and the slot, which facilitates the maintenance personnel to perform equipment maintenance operations. At the same time, by using multiple sets of limiting plates b, when the top cover moves to the left, the limiting plates b at different installation positions abut against each other to form a mechanical stop structure, which forcibly restricts the displacement of the top cover and prevents it from falling off the slide rail due to inertia or misoperation, thus avoiding the risk of falling from a height. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the frame of the small vehicle in this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the top cover and slide rail in this utility model.

[0026] Figure 4 This is a three-dimensional structural diagram of the limiting component in this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the tie rod and slide groove in this utility model;

[0028] Figure 6 This utility model Figure 1 A magnified three-dimensional structural diagram at point A in the middle.

[0029] Legend:

[0030] 1. Outer frame; 2. Ladder; 3. Trolley frame; 4. Conveyor; 5. Lifting motor; 6. Chain; 7. Counterweight box; 8. Top cover; 9. Slide rail; 10. Limiting component; 101. Fixing component; 102. Slot; 103. Tie rod; 104. Spring; 105. Limiting plate a; 106. Limiting plate b; 107. Slide groove; 11. Upper frame. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3This utility model provides an embodiment of a reciprocating elevator, including an outer frame 1, which serves as the basic frame of the elevator, bearing the weight of the entire equipment, including the lifting motor 5, trolley frame 3, counterweight box 7, etc., and providing an installation reference for other components. An upper frame 11 is fixedly connected to the upper part of the outer frame 1. By reducing the height of the upper frame 11 and optimizing the layout of the lifting motor 5, the vertical space above the elevator is significantly reduced, freeing up unused top space in warehousing scenarios and directly improving cargo storage efficiency (traditional equipment requires 2-3 meters of space at the top, which this design can compress to less than 1 meter). A ladder 2 is fixedly connected to the outer side of the outer frame 1, allowing maintenance personnel to climb to the top of the equipment for easy inspection and maintenance of components such as the lifting motor 5 and chain 6. The lifting motor 5 is fixedly connected to the inner wall of the upper frame 11. Machine 5 is placed horizontally and consists of a lifting reducer, a conveyor motor, and a lifting servo motor. The lifting reducer model is SMKA97-41.87-A-SF200D42J12, with a ladder 2 fixedly connected to the outside. The installation method is M1, with a reduction ratio of 24.75 and an output speed of 61. The lifting servo motor model is ISMG1-95C15CD-A334FA. The conveyor motor is SK372.1-80LP / 4, BRE10, TF, 0.75KW, M3-3-Ⅱ, with a speed of 62r / min, torque of 116Nm, speed ratio of 23, motor voltage of 380V, and brake voltage of 220V.

[0033] Furthermore, multiple sets of toothed discs are installed on the outer side of the output shaft of the lifting motor 5. Multiple sets of chains 6 are connected to the outer sides of these toothed discs. These chains 6 come in two specifications: 20A-1 to 7 meters and 20A-1 to 5.46 meters. One end of each chain 6 is fixedly connected to a trolley frame 3 that is slidably connected to the outer side of the outer frame 1, used to support the conveyor 4. The other end of the chain 6 is fixedly connected to a counterweight box 7. A limit switch (model OMRON 2D2F-5) is installed at the connection between the chain 6 and the trolley frame 3. A ladder is fixedly connected to the outer side of the limit switch, which monitors tension in real time. If the chain 6 breaks, is overloaded, or is abnormally stretched, the switch triggers an emergency stop of the motor to prevent the trolley from falling (response time <0.1 seconds). (seconds), the counterweight box 7 offsets the weight of the trolley frame 3 and the conveyor 4, ensuring the chain 6 is taut and preventing slippage; reducing the inertial impact during lifting and improving system stability. The trolley frame 3 is equipped with a conveyor 4 for transporting goods, which is existing technology. The counterweight box 7 is slidably connected to the surface of the outer frame 1 via pulleys. The front and rear sides of the upper frame 11 are symmetrically fixed with slide rails 9, providing a stable sliding platform for the top cover 8. The top cover 8 is slidably connected to the inner wall of the slide rail 9, which can reduce dust and impurities falling onto the lifting motor 5 and the chain 6. The lower part of the top cover 8 fits against the outer side of the upper frame 11 equipment, reducing gaps. The upper part of the slide rail 9 is fixedly connected with a limit component 10.

[0034] Reference Figure 1 , Figure 3 and Figure 4 The limiting component 10 includes a fixing member 101 fixedly connected to the upper part of the slide rail 9 for supporting the pull rod 103, a fixing slot 102 and a spring 104. The pull rod 103 is movably connected to the inner wall of the fixing member 101. The operator can release the limiting plate b106 by pulling the pull rod 103. The upper part of the fixing member 101 is provided with a slot 102 near the periphery of the pull rod 103, which can lock the position of the pull rod 103 when it is lifted upwards for easy use. The inner wall of the slot 102 is provided with a spring 104, and the lower outer side of the pull rod 103 is provided with a circular baffle. One end of the spring 104 contacts the upper surface of the circular baffle of the pull rod 103, and the other end of the spring 104 contacts the inner surface of the slot 102. The spring 104 can provide downward pressure to the pull rod 103, thereby ensuring that the limiting plate a105 limits the limiting plate b106.

[0035] Furthermore, a limiting plate a105 is fixedly connected to the lower part of the pull rod 103, and a limiting plate b106 is fixedly connected to the right side of the top cover 8 near the limiting plate a105. Multiple sets of limiting plates b106 are provided. One set of limiting plates b106 is fixedly connected to the left outer side of the slide rail 9. When the top cover 8 slides into place, the limiting plate a105 abuts against the limiting plate b106 to form a mechanical stop, preventing the top cover 8 from moving excessively or derailing. Especially when the top cover 8 slides to the left limit position, multiple sets of limiting plates b106 abut against each other to provide redundant safety protection.

[0036] Reference Figures 4-6 The upper part of the pull rod 103 is T-shaped for easy operation. The cross-section of the upper part of the T-shaped vertical rod of the pull rod 103 is elliptical, and a sliding groove 107 is formed around the outer side of the elliptical part of the pull rod 103. The elliptical part of the pull rod 103 is inserted into the slot 102 to limit the position of the pull rod 103, thus making it easy for maintenance personnel to push open the top cover 8. Ventilation openings are provided on the outer side of the upper frame 11 and the upper part of the top cover 8. The ventilation openings are designed as louvers with an inclined angle to block vertically falling dust while maintaining air circulation, thus achieving both heat dissipation and dust prevention. Multiple ventilation openings form an upper and lower convection channel. When the equipment is running, the heat generated by the motor and transmission components is discharged upward through the ventilation openings of the top cover 8, and external cold air is drawn in from the ventilation openings on the outer side of the upper frame 11 to achieve natural convection heat dissipation. The outer side of the top cover 8 is provided with reinforcing ribs to improve impact resistance and structural strength. The left side of the slide rail 9 extends to the outer side of the upper frame 11, allowing the top cover 8 to slide out completely, expanding the maintenance and operation space.

[0037] Working Principle: During operation, the lifting motor 5 (composed of a servo motor and a reducer, models ISMG1-95C15CD-A334FA and SMKA97-41.87-A-SF200D42J12 respectively) starts, driving the sprocket to rotate via the output shaft. The sprocket then drives the chain 6 (specifications 20A-1 to 7 meters / 5.46 meters) to reciprocate. One end of the chain 6 is connected to the trolley frame 3 (with a built-in conveyor 4 for carrying goods), and the other end is connected to the counterweight box 7, forming a closed transmission chain. When the motor rotates forward, the trolley frame 3 rises along the outside of the outer frame 1, and the counterweight box 7 descends synchronously. When the motor rotates in reverse, the opposite occurs; the counterweight box 7 slides on the surface of the outer frame 1 via pulleys, its weight dynamically balancing the weight of the trolley frame 3, reducing the motor load by approximately 40%. Simultaneously, gravity tensions the chain 6, preventing slippage.

[0038] When equipment maintenance is required, the maintenance personnel pull up the lever 103 to compress the spring 104, causing the limit plate a105 to disengage from the locking state of the limit plate b106, thus releasing the top cover 8 from its limiting position. At this time, the lever 103 is rotated 90 degrees, and the slide groove 107 on the T-shaped elliptical rod at the top of the lever 103 inserts into the slot 102, limiting the position of the lever 103. This allows the maintenance personnel to operate the other limiting component 10 and push the top cover 8 to slide to the left along the slide rail 9 (the slide rail 9 extends to the outside of the frame 1 on the left, and multiple sets of limit plates b106 abut against each other, providing redundant safety protection), completely exposing the motor, gear, and other components inside the upper frame 11. The time required for a single opening is less than 10 seconds.

[0039] The outer side of the upper frame 11 and the louvered vents on the top of the top cover 8 form an upper and lower convection channel: the heat generated by the operation of the motor and transmission components (up to 85℃) is exhausted upward through the vents of the upper frame 11. External cold air is drawn in through the vents of the top cover 8, flows over the surface of the motor, and achieves natural convection heat dissipation, reducing the internal temperature to below 70℃. The vents are designed with a 30° inclination, which can block more than 80% of vertical dust while maintaining an airflow velocity of ≥1.5m / s.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reciprocating elevator, comprising an outer frame (1), characterized in that: A ladder (2) is fixedly connected to the outside of the outer frame (1). An upper frame (11) is fixedly connected to the upper part of the outer frame (1). A lifting motor (5) is fixedly connected to the inner wall of the upper frame (11). Multiple sets of toothed discs are provided on the outside of the output shaft of the lifting motor (5). Multiple sets of chains (6) are driven to the outside of the multiple sets of toothed discs. One end of the multiple sets of chains (6) is fixedly connected to a trolley frame (3) that is slidably connected to the outside of the outer frame (1). The other end of the chain (6) is fixedly connected to a counterweight box (7). A conveyor (4) is provided inside the trolley frame (3). The counterweight box (7) is slidably connected to the surface of the outer frame (1) through pulleys. Slide rails (9) are symmetrically fixedly connected to the front and rear sides of the upper frame (11). A top cover (8) is slidably connected to the inner wall of the slide rail (9). A limit component (10) is fixedly connected to the upper part of the slide rail (9). The limiting component (10) includes a fixing member (101) fixedly connected to the upper part of the slide rail (9). A pull rod (103) is movably connected to the inner wall of the fixing member (101). A slot (102) is opened on the upper part of the fixing member (101) near the outer periphery of the pull rod (103). A spring (104) is provided on the inner wall of the slot (102). A limiting plate a (105) is fixedly connected to the lower part of the pull rod (103). A limiting plate b (106) is fixedly connected to the right side of the top cover (8) near the limiting plate a (105).

2. The reciprocating elevator according to claim 1, characterized in that: Multiple sets of the limiting plate b (106) are provided, and one set of the limiting plate b (106) is fixedly connected to the outer left side of the slide rail (9).

3. The reciprocating elevator according to claim 1, characterized in that: The upper part of the pull rod (103) is T-shaped, the cross-section of the upper part of the T-shaped vertical rod of the pull rod (103) is elliptical, and a groove (107) is provided around the outer side of the elliptical part of the pull rod (103). The elliptical part of the pull rod (103) is inserted into the slot (102).

4. A reciprocating elevator according to claim 1, characterized in that: A circular baffle is provided on the lower outer side of the pull rod (103).

5. A reciprocating elevator according to claim 1, characterized in that: One end of the spring (104) contacts the upper surface of the circular baffle of the pull rod (103), and the other end of the spring (104) contacts the inner surface of the slot (102).

6. A reciprocating elevator according to claim 1, characterized in that: Ventilation openings are provided on the outer side of the upper frame (11) and the upper part of the top cover (8).

7. A reciprocating elevator according to claim 1, characterized in that: The outer side of the top cover (8) is provided with reinforcing ribs.

8. A reciprocating elevator according to claim 1, characterized in that: The slide rail (9) extends to the outside of the upper frame (11) on the left side.

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