Far-end stroke control device for lifting system

Abstract

The utility model belongs to the technical field of lifting devices, and relates to a far-end stroke control device for a lifting system, which comprises a lifting bin, a lifting ring arranged in the center of the top of the lifting bin, first fixed pulleys arranged on two sides of the top of the lifting bin, and a placement seat arranged in the lifting bin. A steel wire rope is connected to one side of the top of the placement seat, a gravity sliding block is connected to the other side of the steel wire rope, the gravity sliding block is placed in a fixed guide groove, a second fixed pulley is arranged on the top of the fixed guide groove, and an upper limiting switch and a lower limiting switch are arranged on the fixed guide groove. The far-end gravity sliding block is driven by the steel wire rope and the pulley block according to the lever principle to move in the fixed guide groove, when the gravity sliding block reaches the limiting switch, a signal is triggered, lifting given is cut off, and lifting is stopped.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of lifting device, concretely relates to a remote stroke control device for lifting system. BACKGROUND

[0002] Stroke control device is mainly used for controlling stroke and limit protection of mechanical equipment. In 1500mm wide strip production line of plate strip factory, stroke controller is mainly used for lifting stroke protection control of elevator, and is installed on upper and lower frames of the body of the elevator.

[0003] In the process of use and maintenance, the proximity switch of the stroke controller causes functional failure due to high temperature, mechanical damage, contact overheating protection, too large gap between frames, ablation and the like, and it is difficult to replace and adjust the upper and lower limit proximity switches, thereby increasing equipment operation cost and operation failure rate, in addition, the steel coil is easy to shake in the bin, and there is a risk of ground impact when falling to the ground. It is particularly prominent in hot continuous rolling production line with fast production rhythm and poor working environment. Therefore, the remote stroke control device for lifting system is proposed. SUMMARY

[0004] The utility model discloses a remote stroke control device for lifting system, which has the remote stroke control function of the lifting system and solves the problems of easy damage of the stroke controller and easy shaking of the steel coil in the bin, and the risk of ground impact when falling to the ground.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that the utility model provides a remote stroke control device for lifting system, which comprises a lifting bin, a first fixed pulley is arranged on the top of the lifting bin, a mounting seat is arranged inside the lifting bin, the mounting seat is connected to the inner wall of the top of the lifting bin through hoisting steel ropes, a steel coil is placed in the mounting seat, a steel wire rope is connected to one side of the top of the mounting seat, the other side of the steel wire rope is connected to a gravity sliding block, the gravity sliding block is placed in a fixed guide groove, a second fixed pulley is arranged on the top of the fixed guide groove, and an upper limit switch and a lower limit switch are arranged on the fixed guide groove respectively.

[0006] Preferably, a lifting ring is arranged at the center of the top of the lifting bin.

[0007] Preferably, a recess is arranged on the inner bottom wall of the mounting seat.

[0008] Preferably, a plurality of fixed guide grooves are arranged around the lifting bin.

[0009] Preferably, the upper limit switch and the lower limit switch are both NPN type proximity switches.

[0010] As preferred, the number of the fixed guide slots is at least two, the number of the gravity sliding blocks is set corresponding to the number of the fixed guide slots, the number of the steel wires is set corresponding to the number of the gravity sliding blocks, and the number of the first and second fixed pulleys is set corresponding to the number of the steel wires.

[0011] As preferred, the steel wire connecting positions are evenly arranged around the placing seat.

[0012] As preferred, the lifting bin top is provided with rope passing holes, and the number of the rope passing holes is set corresponding to the number of the steel wires.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are that,

[0014] 1. The utility model discloses a steel wire, pulley block utilize lever principle drive far end gravity sliding block in fixed guide groove move, when gravity sliding block reaches limit switch, trigger signal, cut off lifting given, lifting stop.

[0015] 2. The utility model discloses have the far end stroke control function of lifting system, solved the stroke controller of prior art and the problem that steel roll is easy to sway in the bin, when falling, exist the risk of ground impact. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use a simple introduction to the drawings, obviously, the following description in the drawings is some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 It is a kind of far end stroke control device for the structure diagram of lifting system;

[0018] In the above figure, 1, lifting bin, 2, pull ring, 3, rope passing hole, 4, first fixed pulley, 5, placing seat, 6, hoisting steel rope, 7, steel roll, 8, steel wire, 9, gravity sliding block, 10, fixed guide slot, 11, second fixed pulley, 12, upper limit switch, 13, lower limit switch. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use a simple introduction to the drawings, obviously, the following description in the drawings is some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1, as Figure 1 As shown, a remote travel control device for a lifting system includes a lifting chamber 1, which serves as a support frame for lifting. The lifting chamber 1 is designed with high-strength steel to ensure overall stability and is suitable for the high-temperature, high-load environment of a steel rolling production line. A first fixed pulley 4 is installed at the top of the lifting chamber 1. A mounting seat 5 is installed inside the lifting chamber 1. The top of the mounting seat 5 is connected to the inner wall of the top of the lifting chamber 1 via a hoisting steel rope 6. The hoisting steel rope 6 lifts the mounting seat 5, reducing pressure on the bottom inner wall of the lifting chamber 1, thus reducing wear and impact. A steel coil 7 is placed inside the mounting seat 5, which is suspended inside the lifting chamber 1 by the hoisting steel rope 6 to support the placed steel coil 7.

[0022] A steel wire rope 8 is connected to one side of the top of the mounting base 5, and a gravity slider 9 is connected to the other side of the steel wire rope 8. The mass of the gravity slider 9 can be dynamically adjusted according to the weight of the steel coil 7 to achieve a buffering effect and reduce the impact of ground contact. The gravity slider 9 is placed in a fixed guide groove 10, which provides a vertical guide track for the gravity slider 9. When the lifting chamber 1 moves the mounting base 5 up and down, the steel wire rope 8 pulls the gravity slider 9 to move synchronously in the opposite direction within the fixed guide groove 10. A second fixed pulley 11 is provided at the top of the fixed guide groove 10, and an upper limit switch 12 and a lower limit switch 13 are respectively provided on the fixed guide groove 10.

[0023] The first fixed pulley 4 and the second fixed pulley 11 are used to guide the steel wire rope 8 and ensure the vertical lifting trajectory of the mounting seat 5. The first fixed pulley 4 and the second fixed pulley 11 adopt a wear-resistant bearing structure to reduce the friction loss of the steel rope and extend its service life.

[0024] The specific design of the aforementioned key components will be discussed in detail below:

[0025] A lifting ring 2 is provided at the center of the top of the lifting chamber 1. The lifting ring 2 is connected to an external lifting mechanism, such as a crane or hydraulic device, to provide lifting power. The lifting ring 2 simplifies the design of the lifting interface, reduces the complexity of installation, and evenly distributes the lifting force, reducing local stress concentration.

[0026] The bottom wall of the mounting base 5 is provided with a recess. By providing a recess that matches the shape of the steel coil 7, the contact area is increased, effectively limiting the horizontal displacement of the steel coil 7 and preventing it from shaking.

[0027] The fixed guide groove 10 is evenly arranged around the lifting bin 1. The number of fixed guide grooves 10 is several, and the specific number can be adjusted according to the size of the lifting bin 1, the weight of the steel coil 7 and the control accuracy requirement.

[0028] The upper limit switch 12 and the lower limit switch 13 are both NPN type proximity switches. The upper limit switch 12 and the lower limit switch 13 can detect the position of the gravity sliding block 9 and trigger the lifting stop signal. NPN type proximity switches are selected because they have strong anti-electromagnetic interference ability and are suitable for complex electrical environment of steel plant. The upper limit switch 12 and the lower limit switch 13 are installed on the outside of the guide groove and have no direct contact with the gravity sliding block 9, avoiding mechanical damage.

[0029] The number of fixed guide grooves 10 is at least two, and the number of gravity sliding blocks 9 corresponds to the number of fixed guide grooves 10. The number of steel wires 8 corresponds to the number of gravity sliding blocks 9, and the number of first fixed pulleys 4 and second fixed pulleys 11 corresponds to the number of steel wires 8. Preferably, the number of fixed guide grooves 10 is at least two to ensure stability, and the fixed guide grooves 10 are evenly distributed around the lifting bin 1. For example, if two fixed guide grooves 10 are used, they are arranged on the left and right sides of the lifting bin 1 respectively; if four fixed guide grooves 10 are used, they are arranged on the front, rear, left and right of the lifting bin 11 respectively. The multi-point distribution design can effectively disperse the tension of the gravity sliding block 9 on the mounting seat 5, avoid deformation or damage caused by excessive stress on a single point, and at the same time, the uniform layout ensures that the steel coil 7 is balanced in the lifting process, reducing the risk of shaking and tilting.

[0030] The connection position of the steel wire 8 is evenly arranged around the mounting seat 5, and the uniform distribution of multiple groups of steel wires 8 ensures that the steel coil 7 is balanced in the lifting process.

[0031] The fixed guide groove 10 and the upper limit switch 12 and the lower limit switch 13 are installed far away from the steel coil 7, the environmental temperature is suitable, the gravity sliding block 9 runs stably in the fixed guide groove 10, improves the signal reliability, ensures the smooth production, fundamentally eliminates the accidents caused by high temperature, mechanical damage, contact overheating protection and other fault triggers, reduces the labor intensity of workers.

[0032] The lifting bin 1 is provided with a rope passing hole 3, and the number of rope passing holes 3 corresponds to the number of steel wires 8. The rope passing hole 3 facilitates the connection of the steel wire 8 with the mounting seat 5, and the connection of the steel wire 8 with the mounting seat 5 also plays a role in stabilizing the mounting seat 5.

[0033] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein, and the contents not described in detail in the description belong to the prior art known by the professional technical personnel.

[0034] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms, and any skilled person in the art can change or modify the equivalent embodiments applied to other fields by using the disclosed technical content, but any simple modification, equivalent change and modification made on the basis of the technical essence of the utility model to the above embodiments still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. A remote travel control device for an elevator system, characterized by, The lifting bin is provided with a first fixed pulley at the top, an installation seat is arranged in the lifting bin, the top of the installation seat is connected with the inner wall of the lifting bin through a hoisting steel rope, a steel roll is placed in the installation seat, a steel wire rope is connected with one side of the top of the installation seat, the other side of the steel wire rope is connected with a gravity sliding block, the gravity sliding block is placed in a fixed guide groove, the fixed guide groove is provided with a second fixed pulley at the top, and an upper limit switch and a lower limit switch are arranged on the fixed guide groove respectively.

2. A remote stroke control device for an elevator system as defined in claim 1, wherein, The lifting bin is provided with a lifting ring at the center of the top.

3. A remote stroke control device for an elevator system as defined in claim 1, wherein, The inner bottom wall of the installation seat is provided with a recess.

4. A remote stroke control device for an elevator system as defined in claim 1, wherein, A plurality of fixed guide grooves are evenly arranged around the lifting bin.

5. A remote stroke control device for an elevator system as defined in claim 1, wherein, The upper limit switch and the lower limit switch are both NPN type proximity switches.

6. A remote stroke control device for an elevator system as defined in claim 4, wherein, The number of the fixed guide grooves is at least two, the number of the gravity sliding blocks is corresponding to the number of the fixed guide grooves, the number of the steel wire ropes is corresponding to the number of the gravity sliding blocks, and the number of the first fixed pulleys and the second fixed pulleys is corresponding to the number of the steel wire ropes.

7. A remote stroke control device for a lift system as defined in claim 6, wherein, The connection positions of the steel wire ropes are evenly arranged around the installation seat.

8. A remote stroke control device for an elevator system as defined in claim 1, wherein, The top of the lifting bin is provided with a rope passing hole, and the number of the rope passing holes is corresponding to the number of the steel wire ropes.

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