Sliding type hoisting mechanism

Abstract

The utility model discloses a sliding type hoisting mechanism, which relates to the technical field of portal cranes, aims to solve the problems that the traditional hoisting mechanism is inconvenient to mount and dismount and difficult to transfer and transport, and comprises a double-layer sliding underframe which comprises an upper-layer underframe and a lower-layer underframe, an upper-layer underframe is slidably mounted on the upper end face of the lower-layer underframe, a speed reducer is mounted on a support portion of the upper-layer underframe through an adapter disc, a winding drum is mounted on the outer wall of the speed reducer, one end of the speed reducer is connected with a motor through a disc coupler, and a limiter is mounted at the other end of the speed reducer through a limiter coupler. The speed reducer has light-load high-speed performance and good starting and braking performance, the speed reducer can be directly replaced without detaching a steel wire rope, a winding drum and other components, maintenance is convenient, safety and reliability are achieved, and transition transportation of equipment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to a sliding lifting mechanism. Background Art

[0002] Today, as lifting equipment is becoming more and more sophisticated, the performance of the equipment can meet the basic requirements of use. Therefore, more efficient, safe, economical and convenient have become the direction of development and progress of the lifting industry. Traditional lifting equipment has a slow speed under light load and a long start-stop time, which greatly affects the efficiency of lifting operations; and once the built-in reducer fails, the entire machine often needs to be dismantled, which increases the labor and risk factor; the mechanism uses a drum coupling at the wheel, which is heavy, has a long start-stop time, and has high noise and vibration during operation; when the equipment is transferred, due to space reasons, the mechanism needs to be removed from the main structure and transported separately, which increases the workload and cost; the traditional mechanical limiter, once a failure or poor debugging occurs, the hook is at risk of touching the ground and hitting the top. Therefore, there is an urgent need for a new mechanism with excellent performance, convenient maintenance and safe use. Utility Model Content

[0003] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes a sliding lifting mechanism, which includes a double-layer sliding frame, the double-layer sliding frame includes an upper frame and a lower frame, the upper end surface of the lower frame is slidably installed with the upper frame, the bracket part of the upper frame is installed with a reducer through an adapter plate, the outer wall of the reducer is installed with a reel, one end of the reducer is connected to a motor through a disc coupling, and the other end of the reducer is installed with a limiter through a limiter coupling.

[0004] The utility model is further configured as follows: a brake for clamping a disc coupling to achieve braking is installed on the upper chassis.

[0005] The utility model is further configured as follows: an encoder is installed on one side of the limiter.

[0006] The beneficial technical effects of the utility model are: light load and high-speed performance: more than half of the working conditions of gantry cranes are light loads. Increasing the light load speed can greatly improve work efficiency; good starting and braking performance: smaller rotating parts have a shorter starting and braking time, less impact, and smoother operation; easy maintenance: there is no need to remove the wire rope, drum and other parts, and the reducer can be directly replaced; safe and reliable: on the basis of traditional mechanical limit, the electronic limit function is added to improve the safety factor; easy to transport: when the equipment is transferred, the mechanism can be hidden in the main structure, and the whole installation and transportation can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Shown is a schematic diagram of the structure of the utility model.

[0008] Figure 2 A schematic diagram of a disc coupling is shown.

[0009] Figure 3 A schematic diagram of the reducer disassembly is shown.

[0010] Figure 4 A schematic diagram of a limiting device is shown.

[0011] Figure 5 A schematic diagram of the working position of the utility model is shown.

[0012] Figure 6 A schematic diagram of the transport position of the utility model is shown.

[0013] Figure numerals: 1. motor, 2. disc coupling, 3. adapter plate, 4. reducer, 5. brake, 6. reel, 7. limiter coupling, 8. limiter, 9. encoder, 10. upper chassis, 11. lower chassis. DETAILED DESCRIPTION

[0014] Please refer to the attached Figure 1-6 Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0015] The utility model proposes a sliding lifting mechanism, which comprehensively improves the performance, safety, convenience of maintenance and other aspects of the mechanism through innovative selection and special design of a series of components, including a double-layer sliding frame, the double-layer sliding frame includes an upper frame 10 and a lower frame 11, the upper end surface of the lower frame 11 is slidably mounted with the upper frame 10, the bracket part of the upper frame 10 is mounted with a reducer 4 through an adapter plate 3, and an adapter plate 3 is designed between the reducer 4 and the upper frame 10. When the reducer 4 is replaced, the adapter plate 3 is horizontally disassembled together with the reducer 4 without disassembling the mechanism. The outer wall of the reducer 4 is installed with a reel 6. One end of the reducer 4 is connected to the motor 1 through a disc coupling 2. The motor 1 is a 4-pole, 25Hz base frequency motor with a rated torque at 25Hz, a speed of 750r / min, a light load torque at 100Hz, and a maximum speed of 3000r / min. Compared with the existing 6-pole motor, the speed is only 2000r / min at 100Hz, and the light load speed is increased by one third. The disc coupling 2 is selected, which is light in weight and has a moment of inertia of half that of the existing drum brake. The starting and braking time can be shortened by more than 3 seconds. The other end of the reducer 4 is installed with a limiter 8 through a limiter coupling 7. A brake 5 for clamping the disc coupling 2 to achieve braking is installed on the upper chassis 10. The brake 5 achieves the braking of the mechanism by clamping the disc coupling 2. An encoder 9 is installed on one side of the limiter 8. The limiter 8 is a mechanical limiter, and the encoder 9 is an electric limiter. By adding a limit feedback system, the signal can be fed back to the central control and the limiter 8 to realize the mechanical and electronic dual limit functions. Even if the mechanical limiter 8 fails, the electric limiter can also realize the limit function of the hook. The closed-loop feedback accuracy is higher, which improves the safety factor of the equipment. The limiter 8 and the encoder 9 are coaxially connected, each performing its own separate function, which plays a role of double insurance.

[0016] like Figure 4 As shown, on the premise that the support end of the drum 6 is equipped with a mechanical stopper 8, an encoder 9 is installed. The stopper 8 and the support end of the drum 6 are coaxially driven through the stopper coupling 7, and the encoder 9 is also connected to the stopper 8 on the other side of the stopper 8. The mechanical and electronic double stoppers and the drum 9 are synchronously rotated, and the position of the hook is determined by calculating the number of revolutions of the drum 6, thereby preventing the hook from touching the ground or hitting the top. When one of the stopper 8 or the encoder 9 fails, the other component can still independently complete the limiting work, thereby improving the safety factor of the mechanism.

[0017] A double-layer sliding chassis is designed, and the upper chassis 10 can slide along the slideway of the lower chassis 11, so that the mechanism has two installation positions for working and transportation, which is convenient for transfer and transportation. Figure 5 As shown, when the mechanism is in the working position, the center axis of the reel 6 coincides with the center axis of the structure, and the motor 1 is outside the main structure. Figure 6As shown, when the project is completed and the equipment needs to be transferred, the bolts between the upper chassis 10 and the lower chassis 11 of the mechanism are removed, the upper chassis 10 is slid to the transport position, and then the bolts are tightened. Figure 5 As shown, the entire mechanism is now hidden inside the main structure, so the mechanism does not need to be removed separately, and can be installed, disassembled and transported together with the structural parts without causing problems such as bumps or excessive width during transportation.

[0018] The existing mechanism has a structure in which the reducer 4 is directly fixed on the chassis. To leave space for the mounting bolts, the opening of the chassis side plate is smaller than the outer shape of the reducer 4. When replacing the reducer 4, the wire rope must be removed first, then the drum 6 and the reducer 4 are removed from the chassis as a whole, and finally the reducer 4 is disassembled. The steps are cumbersome and the workload is large. Figure 3 As shown, the mechanism sets an adapter plate 3 between the reducer 4 and the upper chassis 10. Through the transition of the adapter plate 3, the opening of the side plate of the upper chassis 10 can be larger than the outer contour of the reducer 4. In this way, the adapter plate 3 together with the reducer 4 can be directly taken out horizontally from the side opening of the upper chassis 10 without disassembling other components.

[0019] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0020] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0022] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0023] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.

Claims

1. A sliding lifting mechanism, comprising a double-layer sliding chassis, characterized in that: The double-layer sliding chassis comprises an upper chassis (10) and a lower chassis (11); the upper end surface of the lower chassis (11) is slidably mounted with the upper chassis (10); a reducer (4) is mounted on the bracket portion of the upper chassis (10) via an adapter plate (3); a reel (6) is mounted on the outer wall of the reducer (4); one end of the reducer (4) is connected to the motor (1) via a disc coupling (2); and the other end of the reducer (4) is mounted with a limiter (8) via a limiter coupling (7).

2. A sliding lifting mechanism according to claim 1, characterized in that: A brake (5) for clamping the disc coupling (2) to achieve braking is installed on the upper chassis (10).

3. A sliding lifting mechanism according to claim 1, characterized in that: An encoder (9) is installed on one side of the limiter (8).

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