Continuous elevator

Abstract

The utility model relates to a continuous elevator which comprises a frequency converter, a vertical lifting 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 connected with the vertical lifting motor; an elevator tray which is driven by a vertical lifting motor to reciprocate up and down is arranged in a main body frame of the continuous elevator, and elevator tray detection sensors are arranged at the positions, close to the top and the bottom, of the main body frame respectively. 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, especially to a continuous elevator. BACKGROUND

[0002] The elevator is a mechanical device for vertical conveying of objects, and in industrial production, the turnover of goods in the factory workshop requires lifting of heavy goods to a certain height.

[0003] As disclosed in Chinese patent application CN202411321177.1, the current continuous elevator generally uses chain drive, which drives the chain and tray by the motor to realize the continuous upward and downward conveying of goods. However, the existing continuous elevator lacks effective monitoring of the lifting process of the tray, and the sudden acceleration and deceleration of the elevator will impact the motor and the rack, and if the brake of the elevator is not timely, the tray will hit the rack, causing the transported goods in the tray to fall. UTILITY MODEL CONTENTS

[0004] The utility model aims to overcome the problem of easy falling of transported goods in the existing technology and provide a continuous elevator.

[0005] The purpose of the utility model can be achieved by the following technical solutions:

[0006] A continuous elevator comprises a frequency converter, a vertical lifting 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 the vertical lifting motor; the main frame of the continuous elevator is provided with an elevator tray driven by the vertical lifting motor to move up and down reciprocally, the main frame is provided with an elevator tray detection sensor near the top and the bottom respectively; 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 for receiving and feeding back a synchronous control signal.

[0007] 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.

[0008] As a preferred technical solution, the elevator tray is provided with an article detection photoelectricity.

[0009] 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.

[0010] As a preferred technical scheme, the top of the main frame is provided with an unloading starting switch and an unloading stopping switch, and the bottom of the main frame is provided with a loading starting switch and a loading stopping switch, which are respectively connected with the upstream and downstream conveying devices for linkage control of the loading and unloading processes of the elevator.

[0011] As a preferred technical scheme, the bottom of the main frame is provided with an interference detection sensor above the lowest position of the elevator tray.

[0012] As a preferred technical scheme, the interference detection sensor is a proximity switch.

[0013] As a preferred technical scheme, the bottom of the main frame is provided with an article falling detection photoelectric sensor below the lowest position of the elevator tray.

[0014] As a preferred technical scheme, the article falling detection photoelectric sensor is provided with two groups, and the two groups of article falling detection photoelectric sensors are arranged in parallel.

[0015] As a preferred technical scheme, the signal receiving interface of the frequency converter includes 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 includes output interfaces of the starting and stopping signals of the elevator.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The continuous elevator provided by the utility model adopts a contact switch and a contactor to control the braking time of the elevator, ensures that the elevator moves smoothly, and avoids the phenomenon of goods falling from the elevator. In addition, the article falling detection photoelectric sensor and the interference detection sensor are arranged to detect the abnormality in the working process of the elevator and to alarm the staff. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the continuous elevator of the utility model;

[0019] Figure 2 It is a circuit diagram of the continuous elevator of the utility model;

[0020] The reference signs in the drawing are as follows: 1, main frame; 2, elevator tray; 3, article detection photoelectric sensor; 4, unloading starting switch; 5, unloading stopping switch; 6, loading starting switch; 7, loading stopping switch; 8, interference detection photoelectric sensor; 9, elevator tray detection photoelectric sensor; and 10, article falling detection photoelectric sensor. DETAILED DESCRIPTION

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

[0022] Embodiment 1

[0023] As Figure 1 shown, the utility model discloses a continuous elevator's main body frame 1 is provided with by motor drive reciprocating motion on it the elevator tray 2 of up and down, by the elevator tray 2 to the goods below is lifted and transported to the top of elevator. The elevator tray 2 is provided with two groups of article detection photoelectric 3, two groups of article detection photoelectric 3 parallelly arranged, for detecting whether the loading cargo area in the elevator tray 2.

[0024] The top of main body frame 1 is provided with with the unloading start switch 4 and unloading stop switch 5, and the bottom of main body frame 1 is provided with loading start switch 6 and loading stop switch 7, and the switches are respectively connected with the control of upstream and downstream conveying devices to link control the loading and unloading process of the elevator.

[0025] The bottom of main body frame 1, above the lowest position of elevator tray 2 is provided with interference detection sensor 8, and specifically the interference detection sensor 8 adopts proximity switch. If object is detected to approach when the elevator tray 2 is loading at the bottom of elevator, stop command is sent, and collision is avoided.

[0026] The position close to the top and bottom of main body frame 1 is provided with elevator tray detection sensor 9, and the elevator tray detection sensor 9 adopts proximity switch, and is used for detecting the position of elevator tray and then controlling the timing of brake through contactor.

[0027] The bottom of main body frame 1, below the lowest position of elevator tray 2 is provided with two groups of article falling detection photoelectric 10, and the two groups of article falling detection photoelectric 10 are parallelly arranged along the width direction of main body frame 1. When the goods loaded on the elevator tray 2 falls from above, the article falling detection photoelectric will be triggered, and the staff is reminded and alarmed.

[0028] As Figure 2As shown, the main components of the circuit part of the continuous elevator include: frequency converter, contactor, vertical lifting motor and brake. The 250V three-phase power output from the three-phase power supply powers the vertical lifting motor after passing through the frequency converter. The contactor is provided between the three-phase power supply and the brake, and powers the brake after passing through a rectifier. The signal input end of the contactor is connected with the elevator tray detection sensor 9; the frequency converter is connected with a high-frequency braking resistor contactor, and the contactor is connected with the frequency converter signal, receives and feedbacks the synchronous control signal. The proximity switch for detecting the position of the elevator tray is used to control the timing of the brake through the contactor, so that the elevator does not have the phenomenon of sliding.

[0029] The signal receiving interface of the frequency converter includes: input interfaces of motor forward rotation, reverse rotation, high-speed operation and low-speed operation signals; the signal output interface of the frequency converter includes: output interfaces of the start and stop signals of the elevator. The frequency converter used in the embodiment is FR-E840-0040-4-60, 1.51KW / 4.0A; the model of the braking resistor is FR-ABR-H1.5K; and the model of the contactor is LP1K0610BD.

[0030] The above describes the preferred embodiment of the utility model in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the utility model. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the utility model shall be within the protection scope defined by the claims.

Claims

1. A continuous hoist, comprising a frequency converter, a vertical lifting motor, and a brake, wherein the frequency converter is connected to a three-phase power supply on one side and to the vertical lifting motor on the other side; the main frame (1) of the continuous hoist is provided with a hoist tray (2) driven by the vertical lifting motor to reciprocate up and down, characterized in that, The main frame (1) is provided with hoist tray detection sensors (9) near the top and bottom respectively; a contactor is provided between the three-phase power supply and the brake, the signal input end of the contactor is connected to the hoist tray detection sensor (9), and the contactor is connected to the frequency converter signal.

2. A continuous elevator according to claim 1, characterized in that, The inverter is connected to a high-frequency braking resistor, and a rectifier is provided between the contactor and the brake.

3. A continuous elevator according to claim 1, characterized in that, The hoist tray (2) is equipped with an item detection photoelectric sensor (3).

4. A continuous elevator according to claim 3, characterized in that, The item detection photoelectric (3) is provided in two sets, and the two sets of item detection photoelectric (3) are arranged in parallel.

5. A continuous elevator according to claim 1, characterized in that, The top of the main frame (1) is provided with an unloading start switch (4) and an unloading stop switch (5), and the bottom of the main frame (1) is provided with a loading start switch (6) and a loading stop switch (7). The switches are respectively connected to the upstream and downstream conveying devices.

6. A continuous elevator according to claim 1, characterized in that, An interference detection sensor (8) is installed at the bottom of the main frame (1), above the lowest position of the hoist tray (2).

7. A continuous elevator according to claim 6, characterized in that, The interference detection sensor (8) is a proximity switch.

8. A continuous elevator according to claim 1, characterized in that, The bottom of the main frame (1) is provided with an object drop detection photoelectric device (10) below the lowest position of the elevator tray (2).

9. A continuous elevator according to claim 8, characterized in that, The aforementioned item drop detection photoelectric (10) is provided in two sets, and the two sets of item drop detection photoelectric (10) are arranged in parallel.

10. A continuous elevator according to claim 1, characterized in that, The frequency converter's signal receiving interface includes: input interfaces for motor forward and reverse rotation, high-speed operation, and low-speed operation signals; the frequency converter's signal output interface includes: output interfaces for hoist start and stop signals.

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