CN115520744A - Mechanical reset auxiliary device for speed limiter without machine room and operation method thereof - Google Patents

Abstract

The invention discloses a mechanical reset auxiliary device of a machine-room-less speed limiter and an operation method, wherein a bottom plate is fixed at the bottom of a side plate, and a floating plate is positioned above the bottom plate; the first sliding rail is fixed on the floating plate, the second reset spring is arranged between the floating plate and the bottom plate, the moving part is arranged on the first sliding rail, the upper end of the first reset spring is fixed on the moving part, the lower end of the first reset spring is fixed on the floating plate, one end of the operation pull wire is positioned outside the hoistway, and the other end of the operation pull wire sequentially penetrates through the bottom plate and the floating plate to be connected with the moving part; from top to bottom, the distance between the first slide rails in the two reset assemblies is gradually reduced, the speed governor steel wire rope is located between the moving parts in the two reset assemblies, the device and the operation method thereof can operate the speed governor outside a hoistway, the problem that the machine room-free speed governor is abnormal in mechanical reset is solved, and the device has the characteristics of small workload and high safety.

Description

A mechanical reset auxiliary device for a speed limiter without a machine room and its operating method

technical field

The invention relates to an auxiliary device and an operating method thereof, in particular to a mechanical reset auxiliary device for a machine room-less speed limiter and an operating method thereof.

Background technique

The safety gear test of the elevator speed limiter is a must-test item in the elevator inspection process, and it is an important way to ensure the reliable operation of the elevator safety gear protection. In the prior art, when the machine room-less elevator overspeed governor safety gear linkage test resets, there will be a problem that the safety gear can be reset when the car is inspected upwards, but the overspeed governor resets abnormally. For the machine room, the speed limiter can intuitively find the problem in the machine room, and manually reset the speed limiter under safe conditions. However, the machine room-less machine cannot be operated directly because the speed limiter is in the hoistway. Aiming at this phenomenon in the reset of the safety gear linkage test of the machine room-less elevator speed limiter.

The reset of the speed limiter is not normal. If the elevator continues to operate, it will cause damage to the equipment. It happened at the site that after the safety gear linkage test of the speed limiter was successful, the safety gear could be reset normally, but the speed limiter was not reset normally, the car moved upwards, and the compression spring of the speed limiter did not bounce off, causing the wire rope to fail. Turn, the wire rope on one side of the car is bent, and the bent wire rope hits the magnetic isolation plate on the guide rail, the magnetic isolation plate is pulled off, and the leveling switch is also pulled out, which is a safety accident. Since the machine-room-less speed limiter is in the well, and the operating space is not enough, personnel cannot enter the well to reach the overhaul position of the speed limiter.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcoming of the prior art, provide a kind of machine room-less overspeed governor mechanical reset auxiliary device and its operation method, this device and its operation method can operate the overspeed governor outside the hoistway, solve There is no problem of abnormal mechanical reset of the speed limiter in the machine room, and it has the characteristics of small workload and high safety.

In order to achieve the above object, the mechanical reset auxiliary device of the machine roomless speed governor of the present invention includes a bottom plate, a floating plate and two reset assemblies; the reset assembly includes a first slide rail, a first return spring, a second slide rail, Second return spring, operation pull wire and movable parts;

The bottom plate is fixed on the bottom of the side plate, the floating plate is located above the bottom plate; the first slide rail is fixed on the floating plate, the second return spring is arranged between the floating plate and the bottom plate, and the movable part is arranged on the first On the slide rail, the upper end of the first return spring is fixed on the movable part, the lower end of the first return spring is fixed on the floating plate, one end of the operating pull wire is located outside the hoistway, and the other end of the operating pull wire passes through the bottom plate and the floating plate and the movable plate in turn. parts connected;

From top to bottom, the distance between the first sliding rails in the two reset assemblies gradually decreases, and the speed governor wire rope is located between the movable parts in the two reset assemblies.

The lower end of the second slide rail is fixed on the bottom plate, the upper end of the second slide rail passes through the floating plate from bottom to top, and the second return spring is sleeved on the second slide rail.

There are two second return springs in one reset assembly, two second slide rails in one reset assembly, and one second return spring corresponds to one second slide rail.

The second sliding rails are distributed in parallel.

The floating plate is parallel to the bottom plate.

The first sliding rails in the two resetting assemblies are distributed obliquely.

It also includes a protective cover, wherein the lower end of the protective cover is fixed on the bottom plate, and the floating plate, the first slide rail, the first return spring, the second slide rail, the second return spring and the movable parts are all arranged in the protective cover.

Both the bottom plate and the floating plate are provided with first through holes for the operation pull wires to pass through.

The bottom plate, the floating plate and the protective cover are all provided with a second through hole for the wire rope of the speed governor to pass through.

The operation method of the machine room-less speed limiter mechanical reset auxiliary device according to the present invention comprises the following steps:

When the first return spring does not act, the movable part remains on the upper part of the first slide rail, the second slide rail is fixed on the bottom plate, and the floating plate and the second return spring are guided by the second slide rail, and the floating plate and the second return spring The spring moves on the second slide rail; when the safety gear resets normally after the speed limiter safety gear linkage test occurs, and the speed limiter resets abnormally, the staff pulls the operation cable outside the hoistway, and the movable part is driven by the operation cable Move down, and then clamp the wire rope of the speed limiter through the movable parts in the two reset components, and drive the first reset spring 3 to compress at the same time, and then continue to pull the operation cable, the floating plate moves down together along the second slide rail, compressing With the second return spring, the wire rope of the speed limiter moves down part of the distance, and then releases the operation pull wire.

The present invention has the following beneficial effects:

The machine room-less overspeed governor mechanical reset auxiliary device and its operation method described in the present invention are in specific operation. When the safety gear is normally reset after the overspeed governor safety gear linkage test occurs, but the overspeed governor resets abnormally, it will work The personnel pull the operation cable outside the well, and the movable part moves downward through the operation cable, and finally clamps the speed governor wire rope through the movable parts in the two reset components, and at the same time drives the first return spring to compress, and then continues to pull the operation cable, The floating plate moves downwards, compresses the second return spring, the wire rope of the speed limiter moves down a certain distance, and then releases the operation cable, and the emergency electric motor of the elevator moves upwards. Observe whether the mechanical part of the speed limiter is reset normally. If it is not reset normally, it can be repeated. The above operation is to solve the problem of abnormal mechanical reset of the machine room-less speed limiter. It should be noted that when the present invention is in use, the staff only needs to pull the operation cable outside the hoistway without entering into the hoistway, so the safety Higher, simple structure, more convenient installation, and does not involve electrical structure, high reliability.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Figure 2 is a front view of the present invention.

Among them, 1 is the first slide rail, 2 is the movable part, 3 is the first return spring, 4 is the floating plate, 5 is the second slide rail, 6 is the second return spring, 7 is the protective cover, 8 is the bottom plate, 9 Pull the wire for operation.

detailed description

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only The embodiments are a part of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts disclosed in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

The schematic diagrams of the structures according to the disclosed embodiments of the present invention are shown in the accompanying drawings. The figures are not drawn to scale, with certain details exaggerated and possibly omitted for clarity of presentation. The shapes of various regions and layers shown in the figure and their relative sizes and positional relationships are only exemplary, and may deviate due to manufacturing tolerances or technical limitations in practice, and those skilled in the art may Regions/layers with different shapes, sizes, and relative positions can be additionally designed as needed.

Referring to Fig. 1 and Fig. 2, the mechanical reset auxiliary device of the machine room-less speed limiter according to the present invention includes a protective cover 7, a floating plate 4 and two reset assemblies; the reset assembly includes a first slide rail 1, a second slide rail 5. The first return spring 3, the second return spring 6, the operation pull wire 9 and the movable part 2;

Protective cover 7 comprises base plate 8, top plate and side plate, and base plate 8 is fixed on the bottom of described side plate, and floating plate 4 is parallel with described base plate 8, and first slide rail 1, second slide rail 5, first back-moving spring 3. The second return spring 6 , the floating plate 4 and the movable part 2 are all arranged inside the protective cover 7 .

The first slide rail 1 is fixed on the floating plate 4, the lower end of the second slide rail 5 is fixed on the base plate 8, the upper end of the second slide rail 5 passes through the floating plate 4 from bottom to top, and the second return spring 6 is set Between the floating plate 4 and the bottom plate 8, wherein the second return spring 6 is sleeved on the second slide rail 5; the movable part 2 is arranged on the first slide rail 1, and the upper end of the first return spring 3 Fixed on the movable part 2, the lower end of the first return spring 3 is fixed on the floating plate 4, one end of the operating pull wire 9 is located outside the hoistway, and the other end of the operating pull wire 9 passes through the bottom plate 8 and the floating plate 4 in turn to communicate with the movable part 2 connect.

The first slide rails 1 in the two reset assemblies are distributed obliquely, and from top to bottom, the distance between the first slide rails 1 in the two reset assemblies gradually decreases, and the speed governor wire rope is located in the two reset assemblies. Between the parts 2, the number of second return springs 6 in one reset assembly is two, the number of second slide rails 5 in one reset assembly is two, and each second slide rail 5 is distributed in parallel, and one second return spring 6 The spring 6 corresponds to a second slide rail 5 .

Both the base plate 8 and the floating plate 4 are provided with a first through hole for the operation stay wire 9 to pass through. hole, the governor wire rope passes through the base plate 8, the floating plate 4 and the protective cover 7.

The operation method of the machine room-less speed limiter mechanical reset auxiliary device of the present invention comprises the following steps:

When the first return spring 3 does not act, the movable part 2 remains on the top of the first slide rail 1, and does not affect the normal rotation of the overspeed governor. The second slide rail 5 is fixed on the bottom plate 8, and the second slide rail 5 pairs The floating plate 4 and the second return spring 6 are guided, and the floating plate 4 and the second return spring 6 move on the second slide rail 5; when the safety gear is normally reset after the overspeed governor safety gear linkage test occurs, but the overspeed governor When the reset is not normal, the staff pulls the operation stay wire 9 outside the hoistway, and the movable part 2 is driven to move downward by the operation stay wire 9, and finally the movable part 2 in the two reset assemblies clamps the wire rope of the speed limiter, and simultaneously drives the first A return spring 3 is compressed, and then continue to pull the operation pull wire 9, the floating plate 4 moves downward along the second slide rail 5, compresses the second return spring 6, the speed governor wire rope moves down a certain distance, and then releases the operation pull wire 9. The present invention automatically resets under the action of the first return spring 3 and the second return spring head 6, and the elevator moves upwards in an emergency electric manner. Observe whether the speed limiting mechanical part is reset normally. If it is not reset normally, the above operation can be repeated. After normal, you can stop operating the present invention.

It should be noted that the present invention has the following advantages over the prior art:

1) The present invention can operate the speed limiter outside the hoistway, solves the problem of abnormal mechanical reset of the machine room-less speed limiter, and has high safety.

2) After the action of the present invention, the speed limiter can be reset without other operations after mechanical reset and reverse operation.

3) According to the specific situation, operate outside the hoistway, and you can perform multiple operations until the speed limiter resets to normal.

4) The present invention does not involve electrical devices, has a simple mechanical structure and high reliability.

5) The present invention does not need to change the existing elevator electrical system, building structure and mechanical structure, the construction cost is relatively low, and the construction is relatively convenient.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention shall fall within the protection scope of the claims of the present invention.

Claims (10)

1. A machine-roomless overspeed governor mechanical reset auxiliary device is characterized in that it comprises a base plate (8), a floating plate (4) and two reset assemblies; the reset assembly includes a first slide rail (1), a first Return spring (3), second return spring (6), operation pull wire (9) and movable part (2); Base plate (8) is fixed on the bottom of described side plate, and floating plate (4) is positioned at the top of described base plate (8); The first slide rail (1) is fixed on the floating plate (4), and the second back-moving spring (6 ) is arranged between the floating plate (4) and the bottom plate (8), the movable part (2) is arranged on the first slide rail (1), and the upper end of the first return spring (3) is fixed on the movable part (2) Above, the lower end of the first return spring (3) is fixed on the floating plate (4), one end of the operating pull wire (9) is located outside the hoistway, and the other end of the operating pull wire (9) passes through the bottom plate (8) and the floating plate ( 4) being connected with the movable part (2); From top to bottom, the distance between the first sliding rails (1) in the two reset assemblies gradually decreases, and the speed governor wire rope is located between the movable parts (2) in the two reset assemblies. 2. The machine room-less overspeed governor mechanical reset auxiliary device according to claim 1 is characterized in that, the lower end of the second slide rail (5) is fixed on the base plate (8), and the upper end of the second slide rail (5) automatically Passing through the floating plate (4) from bottom to top, the second return spring (6) is sleeved on the second sliding rail (5). 3. The machine-roomless overspeed governor mechanical reset auxiliary device according to claim 2, characterized in that, the number of second return springs (6) in one reset assembly is two, and the second slide rail (5) in one reset assembly ) is two, and a second return spring (6) corresponds to a second slide rail (5). 4. The mechanical reset auxiliary device of the machine room-less speed governor according to claim 2, characterized in that, each second sliding rail (5) is distributed in parallel. 5. The mechanical reset auxiliary device for machine room-less speed governor according to claim 1, characterized in that the floating plate (4) is parallel to the bottom plate (8). 6. The mechanical reset auxiliary device of the machine room-less speed governor according to claim 1, characterized in that the first sliding rails (1) in the two reset assemblies are distributed obliquely. 7. The mechanical reset auxiliary device for machine roomless speed governor according to claim 1, characterized in that it also includes a protective cover (7), wherein the lower end of the protective cover (7) is fixed on the bottom plate (8), and the floating plate (4), the first slide rail (1), the first return spring (3), the second return spring (6) and the movable part (2) are all arranged in the protective cover (7). 8. The mechanical reset auxiliary device for machine room-less speed governor according to claim 1, characterized in that, the bottom plate (8) and the floating plate (4) are provided with a first pass through which the operation pull wire (9) passes. hole. 9. The mechanical reset auxiliary device for the speed limiter without a machine room according to claim 1, characterized in that, the base plate (8), the floating plate (4) and the protective cover (7) are all provided with wire ropes for the speed limiter to pass through. through the second via. 10. An operation method for the mechanical reset auxiliary device of the machine room-less speed limiter according to claim 1, characterized in that it comprises the following steps: When the first return spring (3) does not act, the movable part (2) remains on the upper part of the first slide rail (1), and the second slide rail (5) is fixed on the bottom plate (8). ) to guide the floating plate (4) and the second return spring (6), and the floating plate (4) and the second return spring (6) move on the second slide rail (5); After the linkage test, the safety gear resets normally and the speed limiter resets abnormally, then the staff pulls the operation cable (9) outside the hoistway, and the movable part (2) moves downward through the operation cable (9), and then passes through two The movable part (2) in the reset assembly clamps the wire rope of the speed limiter, drives the first return spring (3) to compress at the same time, and then continues to pull the operation cable (9), and the floating plate (4) moves along the second slide rail (5) Move down together, compress the second return spring (6), the speed limiter wire rope moves down a part of the distance, and then release the operating pull wire (9).

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