Pulse type multi-layer elevator

Abstract

The utility model relates to a pulse type multi-layer elevator which comprises a frequency converter, a driving motor and a brake, one side of the frequency converter is connected with a three-phase power supply, and the other side of the frequency converter is respectively connected with a vertical lifting motor and the brake; a main body frame of the pulse type multi-layer elevator crosses a multi-layer floor, elevator trays which are driven by a driving motor to move up and down in a reciprocating mode are arranged in the main body frame, and elevator tray detection sensors are arranged between the layers of the main body frame. A contactor is arranged between the three-phase power supply and the brake, the signal input end of the contactor is connected with the elevator tray detection sensor, and the contactor is in signal connection with the frequency converter and receives and feeds back synchronous control signals. Compared with the prior art, the brake timing of the elevator can be effectively controlled, it is guaranteed that the elevator acts smoothly, and the phenomenon that goods fall off from the elevator is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of logistics transportation, especially to a pulse type multilayer elevator. BACKGROUND

[0002] The elevator is a mechanical device for vertically conveying objects, and in industrial production, the multilayer elevator can connect production lines and assembly lines between different floors to transport materials between different floors.

[0003] As disclosed in Chinese patent application CN202010808479.7, the current multilayer elevator generally uses chain drive, which drives the chain and tray by the motor to realize the multilayer upward and downward transportation of goods. However, the existing multilayer elevator lacks effective monitoring of the tray lifting process, and the sudden acceleration and deceleration of the elevator between floors will cause impact on the motor and rack, and if the elevator brake is not timely, the tray will be difficult to align with the upstream and downstream logistics transmission equipment in the floor, or will cause the transported goods to fall, etc. SUMMARY

[0004] The utility model aims at overcoming the defects of the prior art and providing a pulse type multilayer elevator.

[0005] The utility model can achieve the purpose by the following technical scheme:

[0006] A pulse type multilayer elevator, comprising a frequency converter, a drive motor and a brake, one side of the frequency converter is connected with a three-phase power supply, and the other side is connected with a vertical lifting motor and a brake respectively; the main frame of the pulse type multilayer elevator spans multiple floors, and the main frame is provided with an elevator tray driven by the drive motor to move up and down reciprocally,

[0007] The main frame is provided with an elevator tray detection sensor between each floor; a contactor is arranged between the three-phase power supply and the brake, the signal input end of the contactor is connected with the elevator tray detection sensor, and the contactor is connected with the frequency converter, receives and feeds back the synchronous control signal.

[0008] As a preferred technical scheme, a pair of loading start and stop switches and a pair of unloading start and stop switches are respectively arranged on the main frame at each floor, and the switches are respectively connected with the upstream and downstream conveying devices.

[0009] As a preferred technical scheme, an interference detection sensor is arranged on the main frame at the position close to the floor of each floor.

[0010] As a preferred technical scheme, the interference detection sensor is a proximity switch.

[0011] As a preferred technical solution, the frequency converter is connected with a high-frequency braking resistor, and a rectifier is arranged between the contactor and the brake.

[0012] As a preferred technical solution, the lifting machine tray is internally provided with an article detection photoelectricity.

[0013] As a preferred technical solution, the article detection photoelectricity is provided with two groups, and the two groups of article detection photoelectricity are arranged in parallel.

[0014] As a preferred technical solution, the bottom of the main frame is provided with article falling detection photoelectricity below the lowest position of the lifting machine tray.

[0015] As a preferred technical solution, the article falling detection photoelectricity is provided with two groups, and the two groups of article falling detection photoelectricity are arranged in parallel.

[0016] As a preferred technical solution, the signal receiving interface of the frequency converter comprises: input interfaces of motor forward rotation, reverse rotation, high-speed operation and low-speed operation signals; and the signal output interface of the frequency converter comprises: output interfaces of lifting machine start and stop signals.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The pulse type multi-layer lifting machine can realize smooth conveying of goods between multiple floors, adopts a contact switch and a contactor to control the braking time of the lifting machine, can ensure that the lifting machine moves smoothly, and avoids the phenomenon that the goods fall from the lifting machine. The pulse type multi-layer lifting machine is further provided with article falling detection photoelectricity and interference detection sensors, detects the abnormality in the working process of the lifting machine, and reminds and alarms the staff. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 is a structural schematic view of the pulse type multi-layer lifting machine of the utility model;

[0020] Figure 2 Fig. 2 is an electrical design drawing of the pulse type multi-layer lifting machine of the utility model. DETAILED DESCRIPTION

[0021] The utility model will be described in detail in combination with the drawings and specific embodiments. The embodiment is implemented on the premise of the technical scheme of the utility model, and gives a detailed implementation mode and specific operation process, but the protection scope of the utility model is not limited to the following embodiments.

[0022] Embodiment 1

[0023] As Figure 1As shown, the pulse-type multi-story elevator provided by this utility model includes a main frame spanning multiple floors. Within the main frame is an elevator tray that is driven by a drive motor to reciprocate between the main frame and each floor. The elevator tray is equipped with two sets of parallel photoelectric sensors for detecting whether the tray contains a loading area.

[0024] Each floor of the main frame is equipped with a pair of loading start and stop switches and a pair of unloading start and stop switches. These switches are connected to the upstream and downstream conveying devices on the corresponding floors to achieve linkage control of the loading and unloading process of the hoist.

[0025] The main frame is equipped with an interference detection sensor located near the floor level on each floor. This interference detection sensor uses a proximity switch. If an object is detected approaching while the hoist pallet is being loaded on that floor, a stop command is issued to prevent a collision.

[0026] The main frame is equipped with hoist pallet detection sensors between each layer. These hoist pallet detection sensors use proximity switches to detect the position of the lowering pallet and then control the timing of braking via a contactor.

[0027] At the bottom of the main frame, below the lowest point of the elevator pallet, are two sets of drop detection photoelectric sensors, which are arranged parallel to each other along the width of the main frame. When goods loaded on the elevator pallet fall from above, the drop detection photoelectric sensors will be triggered, and an alarm will be triggered to alert the staff.

[0028] like Figure 2 As shown, the main components of the circuit of this pulse-type multi-level hoist include: a frequency converter, a contactor, a drive motor, and a brake. The three-phase power supply, after passing through the frequency converter U1, provides three-phase power to the vertical lifting drive motor of the pulse-type multi-level hoist. For the brake, the three-phase power supply first passes through a contactor KM1, and then is rectified by a rectifier to power the brake. A DSC isolating switch box is provided between the frequency converter U1 and the drive motor, and between the contactor KM1 and the rectifier.

[0029] The frequency converter is connected to an encoder and a high-frequency braking resistor R1. The frequency converter's signal receiving interface includes input interfaces for rising, falling, high-speed motor operation, and low-speed motor signals; the frequency converter's signal output interface includes output interfaces for the hoist's start and stop signals. This enables precise start / stop, precise acceleration / deceleration, and fault reset functions for the pulse-type multi-level hoist.

[0030] The signal input terminal of contactor KM1 is connected to the hoist tray detection sensor, while the frequency converter is connected to contactor KM1 and frequency converter U1, receiving and feeding back synchronous control signals. By using the proximity switch that detects the lowering tray, the timing of brake activation is controlled via contactor KM1 to prevent the hoist from slipping.

[0031] In this embodiment, the drive motor model is MGA30040; the frequency converter model is FC-360H15KT4E20H2BXCDXXSXXXXAXBX; and the encoder model is MG450.

[0032] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A pulse type multi-layer elevator, comprising a frequency converter, a driving motor and a brake, one side of the frequency converter being connected with a three-phase power supply and the other side being connected with a vertical lifting motor and a brake respectively; the main frame of the pulse type multi-layer elevator spanning over multiple floors, and a lifting tray driven by the driving motor to move up and down in the main frame, characterized in that, a lifting tray detection sensor is arranged between each floor of the main frame; a contactor is arranged between the three-phase power supply and the brake, the signal input end of the contactor being connected with the lifting tray detection sensor, and the contactor being connected with the frequency converter.

2. A pulse-type multi-layer elevator according to claim 1, characterized in that, a pair of loading start and stop switches and a pair of unloading start and stop switches are arranged on the main frame at each floor respectively, and the switches are connected with the upstream and downstream conveying devices respectively.

3. A pulse-type multi-layer elevator according to claim 1, characterized in that, an interference detection sensor is arranged on the main frame at the position close to the floor at each floor.

4. A pulse-type multi-stage elevator according to claim 3, wherein The interference detection sensor is a proximity switch.

5. A pulse-type multi-stage elevator according to claim 1, wherein The frequency converter is connected with a high-frequency braking resistor, and a rectifier is arranged between the contactor and the brake.

6. A pulse-type multi-stage elevator according to claim 1, wherein An article detection photoelectric device is arranged in the lifting tray.

7. A pulse-type multi-stage elevator according to claim 6, characterized in that The article detection photoelectric device is provided with two groups, and the two groups of article detection photoelectric devices are arranged in parallel.

8. A pulse-type multi-stage elevator according to claim 1, wherein An article falling detection photoelectric device is arranged below the lowest position of the lifting tray at the bottom of the main frame.

9. A pulse-type multi-stage elevator according to claim 8, characterized in that, The article falling detection photoelectric device is provided with two groups, and the two groups of article falling detection photoelectric devices are arranged in parallel.

10. A pulse-type multi-stage elevator according to claim 1, wherein The signal receiving interface of the frequency converter comprises input interfaces of motor forward rotation, reverse rotation, high-speed operation and low-speed operation signals; and the signal output interface of the frequency converter comprises output interfaces of the lifting motor start and stop signals.

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