CN212356106U

CN212356106U - Counterweight diversion sheave device with alarm function

Info

Publication number: CN212356106U
Application number: CN202020378964.0U
Authority: CN
Inventors: 罗纲
Original assignee: Chengdu Textile College
Current assignee: Chengdu Textile College
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-01-15
Anticipated expiration: 2030-03-23

Abstract

The utility model provides a counterweight sheave device with alarm function, which comprises a supporting shaft and is characterized in that at least one end of the supporting shaft is provided with a detection alarm device, the detection alarm device comprises a direct-acting travel switch, an audible and visual alarm and a power supply, the direct-acting travel switch is arranged close to the supporting shaft so as to touch the direct-acting travel switch to trigger the audible and visual alarm when the supporting shaft axially moves or radially moves, after the bearing is damaged, the supporting shaft can generate larger jump in the axial direction and the radial direction because the supporting shaft is unevenly stressed when rotating because of the self force of the supporting shaft, and the supporting shaft contacts with the direct-acting travel switch when jumping is generated, then the direct-acting travel switch is opened, the whole circuit is connected, the audible and visual alarm gives an alarm, and a worker manually closes an elevator after receiving a signal transmitted by the alarm, then maintain, avoided the back shaft to rotate for a long time and assault the condition that leads to it to drop to the supporting shoe.

Description

Counterweight diversion sheave device with alarm function

Technical Field

The application relates to the technical field of elevator equipment, in particular to a counterweight diversion sheave device with an alarm function.

Background

With the development of science and technology and social economy, high-rise buildings have become the marks of modern cities. Elevators, as vertical transport means, entail the transport of large amounts of people and material flows, the role of which is of great importance in buildings. The elevator system comprises a middle-high-rise office building, an office building, a restaurant and a residential building, and service and production departments such as hospitals, markets, warehouses, production workshops and the like, and is provided with a large number of various elevators such as passenger elevators, freight elevators and the like and escalators. With the development of economy and technology, the application field of elevators is wider and wider, and the elevators become a mark of modern material civilization. When the elevator moves up and down, the pressure of the top lifting device is relieved by the counterweight. The counterweight block and the elevator cage body move in opposite directions, and a rope pulley is arranged on the counterweight block to ensure the counterweight block to move up and down.

At present, a plurality of accidents caused by the falling of the counterweight diversion sheave and the incontrollable bottom of the lift car are caused, and serious casualties are caused. The reason for the analysis is that only the diversion sheave rotates around the supporting shaft, when the bearing is damaged, the diversion sheave drives the supporting shaft to rotate together due to the fact that interference fit is adopted between the outer ring of the bearing and the diversion sheave and between the inner ring of the bearing and the supporting shaft, at the moment, the supporting shaft can also rotate, but the supporting shaft is stressed unevenly when rotating, so that the supporting shaft can generate large jump in the axial direction and the radial direction, the supporting shaft is enabled to impact the supporting block greatly, under the reciprocating impact, the supporting block is enabled to fall off, and further the accident that the diversion sheave falls off is enabled, at present, no alarm measure is taken aiming at the situation.

Disclosure of Invention

An object of the embodiment of this application is to provide a take alarming function's heavy diverting pulley device for the technical effect who reports to the police is carried out to the circumstances that the back shaft that leads to when realizing damaging the bearing and diverting pulley rotate together.

The embodiment of the application provides a take alarming function to heavy diverting pulley device, including the back shaft, the at least one end of back shaft is provided with detection alarm device, detection alarm device includes direct-acting travel switch, audible-visual annunciator and power, direct-acting travel switch is close to the back shaft setting, so that can touch when back shaft axial float or radial runout direct-acting travel switch triggers audible-visual annunciator.

In the implementation process, only the diversion sheave rotates around the supporting shaft usually, when the bearing is damaged, the outer ring of the bearing and the diversion sheave and the inner ring of the bearing and the supporting shaft are in interference fit, the diversion sheave drives the supporting shaft to rotate together, at the moment, the diversion sheave can also rotate, when the supporting shaft rotates, the supporting shaft is not stressed uniformly, the supporting shaft can generate large jumping in the axial direction and the radial direction, and the supporting shaft is in contact with the direct-acting travel switch when jumping, then the direct-acting travel switch is opened, the whole circuit is switched on, the audible and visual alarm gives an alarm, a worker receives a signal transmitted by the alarm and then manually closes the elevator, and then the elevator is maintained, so that the situation that the supporting shaft impacts the supporting block to cause the falling of the supporting block due to long-term.

Further, still include to heavy frame, be provided with the supporting shoe to heavy frame below, be provided with the support frame on the supporting shoe, the back shaft rotates with the support frame to be connected, wear to be equipped with the diverting pulley on the back shaft, be fixed with the test rack on weighing to the frame, detect on the fixed test rack of alarm device.

Furthermore, the number of the detection alarm devices is two, the two detection alarm devices are respectively arranged at two ends of the supporting shaft, and the detection alarm devices arranged at the two ends of the supporting shaft simultaneously monitor the rotation condition of the supporting shaft, so that the reliability is improved.

Furthermore, the shape of detection frame is the L type, the quantity of direct acting travel switch is two, be parallelly connected between two the direct acting travel switch, one of two direct acting travel switch aims at the terminal surface of back shaft for detect the axial runout of back shaft, and another aligns the side of back shaft for detect the radial runout of back shaft.

Furthermore, the distance between the linear motion travel switch and the end face or the side face of the support shaft is 3-4 mm.

Furthermore, the supporting block is connected with the counterweight frame through a bolt, a first sizing block is arranged on one surface, in contact with a nut, of the supporting block, the thickness of a bolt fixing surface of the supporting block is increased through the first sizing block, and deformation of the contact surface of the supporting block and the counterweight frame is avoided.

Furthermore, the supporting block is connected with the supporting frame through a bolt, a second sizing block is arranged on one surface, in contact with the nut, of the supporting block, the thickness of the bolt fixing surface of the supporting block is increased through the second sizing block, and deformation of the contact surface of the supporting block and the supporting frame is avoided.

Furthermore, a cylindrical roller bearing is arranged between the supporting shaft and the diversion sheave, and the bearing capacity of the cylindrical roller bearing is better and has certain self-adjusting capacity.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a front view of a counterweight sheave device with an alarm function according to an embodiment of the present application;

FIG. 2 is a side view of the support block and support bracket assembly.

Icon: 1-a counterweight frame, 2-a supporting block, 3-a supporting frame, 4-a supporting shaft, 5-a cylindrical roller bearing, 6-a diversion sheave, 7-a detection alarm device, 710-an audible and visual alarm, 720-a power supply, 730-a detection frame, 740-a direct-acting travel switch, 8-a first sizing block and 9-a second sizing block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

A counterweight sheave 6 device with an alarm function comprises a support shaft 4, wherein at least one end of the support shaft 4 is provided with a detection alarm device 7, the detection alarm device 7 comprises a direct-acting travel switch 740, an acousto-optic alarm 710 and a power supply 720, the direct-acting travel switch 740 is arranged close to the support shaft 4 so as to enable the support shaft 4 to touch the direct-acting travel switch to trigger the acousto-optic alarm 710 when in axial float or radial jump, the counterweight frame 1 is further provided with a support block 2 below the counterweight frame 1, the support frame 3 is arranged on the support block 2, the support shaft 4 is rotatably connected with the support frame 3, a sheave 6 penetrates through the support shaft 4, a detection frame 730 is fixed on the counterweight frame 1, the detection alarm device 7 is fixed on the detection frame 730, the detection frame 730 is L-shaped, and the number of the direct-acting travel switches 740 is two, the two linear travel switches 740 are connected in parallel, one of the two linear travel switches 740 is aligned with the end face of the support shaft 4 and used for detecting the axial runout of the support shaft 4, the other linear travel switch 740 is aligned with the side face of the support shaft 4 and used for detecting the radial runout of the support shaft 4, the distance between the linear travel switch 740 and the end face or the side face of the support shaft 4 is 3-4mm, the support block 2 is connected with the counterweight frame 1 through a bolt, a first sizing block 8 is arranged on the face, in contact with a nut, of the support block 2, a second sizing block 9 is arranged on the face, in contact with the nut, of the support block 2, and a cylindrical roller bearing 5 is arranged between the support shaft 4 and the diversion sheave 6.

The specific working principle is as follows: usually, only the diversion sheave 6 rotates around the support shaft 4, when the bearing is damaged, because the interference fit is adopted between the outer ring of the bearing and the diversion sheave 6 and between the inner ring of the bearing and the support shaft 4, the diversion sheave 6 drives the support shaft 4 to rotate together, at the moment, the diversion sheave 6 can also rotate, when the support shaft 4 rotates, because the stress of the support shaft 4 is uneven, the support shaft 4 can generate large jump in the axial direction and the radial direction, because the support shaft generates the jump, the support shaft is contacted with the direct-acting travel switch 740, then the direct-acting travel switch 740 is opened, the whole circuit is connected, the audible and visual alarm 710 gives an alarm, meanwhile, an elevator safety loop is disconnected, the elevator stops running, a worker receives a signal transmitted by the alarm to maintain, and the condition that the support block 2 is impacted by the long-.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a take alarming function to heavy diverting pulley device, includes the back shaft, its characterized in that, the at least one end of back shaft is provided with detection alarm device, detection alarm device includes direct-acting travel switch, audible-visual annunciator and power, direct-acting travel switch is close to the back shaft setting, so that can touch when back shaft axial float or radial runout direct-acting travel switch triggers audible-visual annunciator.

2. The counterweight sheave device according to claim 1, further comprising a counterweight frame, wherein a support block is disposed below the counterweight frame, a support frame is disposed on the support block, the support shaft is rotatably connected with the support frame, a sheave is disposed on the support shaft, a detection frame is fixed on the counterweight frame, and the detection alarm device is fixed on the detection frame.

3. The counterweight sheave apparatus of claim 1 wherein the number of the detection alarm devices is two, and the two detection alarm devices are respectively disposed at both ends of the support shaft.

4. The counterweight sheave apparatus of claim 2 wherein the test frame is L-shaped, the number of linear travel switches is two, and two of the linear travel switches are connected in parallel, one of the two linear travel switches being aligned with an end surface of the support shaft and the other being aligned with a side surface of the support shaft.

5. The counterweight sheave apparatus of claim 4 wherein the distance between the linear travel switch and the end or side of the support shaft is 3-4 mm.

6. The counterweight sheave apparatus of claim 5 wherein the support block is bolted to the counterweight frame and a first sizing block is disposed on the support block in contact with the nut.

7. The counterweight sheave apparatus of claim 5 wherein the support block is bolted to the support frame and a second shim is provided on the support block on the side in contact with the nut.

8. A counterweight sheave arrangement as claimed in claim 6 or 7, characterized in that a cylindrical roller bearing is arranged between the support shaft and the sheave.