Broken belt detection device for elevator magnetic railing ruler

Abstract

The utility model discloses an elevator magnetic railing ruler belt breakage detection device which comprises an upper connecting plate, a magnetic railing ruler, a first detection switch, a second detection switch and a wedge sleeve plate, the first detection switch is installed on the upper connecting plate, and the second detection switch is installed on the wedge sleeve plate. One end of the magnetic railing ruler is fixed on the upper connecting plate, the other end of the magnetic railing ruler is fixed on the wedge sleeve plate, the magnetic railing ruler is provided with a conductive metal wire and a non-magnetic metal belt, the elongation of the conductive metal wire is smaller than that of the non-magnetic metal belt, and the fracture of the conductive metal wire occurs before the fracture of the non-magnetic metal belt; one ends of the conductive metal wire and the non-magnetic metal belt are respectively connected with the first detection switch, the other ends of the conductive metal wire and the non-magnetic metal belt are respectively connected with the second detection switch, and the first detection switch sends an electric signal to the second detection switch through the conductive metal wire or the non-magnetic metal belt; the device further comprises a fixing seat and a spring, the fixing seat is fixed on the ground, and the spring is connected with the wedge sleeve plate and the fixing seat. The belt breakage early warning device has the function of belt breakage early warning.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator safety detection, and in particular to an elevator magnetic scale belt break detection device with early warning of belt break. Background Art

[0002] The magnetic scale is a commonly used device for elevator leveling. A common fault is the magnetic scale belt breaking. If the elevator cannot take effective braking and protection measures in time after the magnetic scale belt breaks, it will be detrimental to the safety of the passengers. However, the existing magnetic scale belt break detection devices are all passive detection, that is, after the magnetic scale belt breaks, the elevator passively enters the protection mode, and lacks the function of early warning of magnetic scale belt break.

[0003] At present, most of the mechanical detection switches are added at the end of the magnetic scale, and the gravity of the spring energy storage component or the weight block component is used to drive a specific mechanical structure to trigger the magnetic scale break detection switch. This type of technology is a passive trigger and has no early warning function. When the magnetic scale breaks, it takes time for the mechanical structure to trigger the break detection switch, and it also takes time to respond after the break detection switch is triggered. These response times are not good for high-speed elevators. In the absence of normal positioning of the magnetic scale, the elevator cannot accurately control the running speed, and there are safety hazards in the operation of the elevator. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide an elevator magnetic scale break detection device. The magnetic scale is provided with a conductive metal wire and a non-magnetic metal belt. By judging whether the conductive metal wire and the non-magnetic metal belt are energized, it is judged whether the magnetic scale is broken, and the device has an early warning function of broken belt.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An elevator magnetic scale broken belt detection device comprises: an upper connecting plate, a magnetic scale, a first detection switch, a second detection switch and a wedge sleeve plate, wherein the first detection switch is installed on the upper connecting plate, and the second detection switch is installed on the wedge sleeve plate;

[0007] One end of the magnetic scale is fixed to the upper connecting plate, and the other end of the magnetic scale is fixed to the wedge sleeve plate. The magnetic scale is provided with a conductive metal wire and a non-magnetic metal belt. The elongation of the conductive metal wire is less than that of the non-magnetic metal belt. The rupture of the conductive metal wire occurs before the rupture of the non-magnetic metal belt.

[0008] One end of the conductive metal wire and the non-magnetic metal strip is connected to the first detection switch respectively, and the other end of the conductive metal wire and the non-magnetic metal strip is connected to the second detection switch respectively, and the first detection switch sends an electrical signal to the second detection switch through the conductive metal wire or the non-magnetic metal strip;

[0009] It also includes a fixing seat and a spring. The fixing seat is fixed to the ground. The spring is connected to the wedge sleeve plate and the fixing seat respectively. The upper connecting plate, the wedge sleeve plate, the fixing seat and the spring cooperate with each other to straighten the magnetic scale.

[0010] Furthermore, the upper connecting plate is fixed to the elevator guide rail, and the upper connecting plate is provided with a first bending groove, the first bending groove is a V-shaped groove, and the notch of the first bending groove is continuously narrowed.

[0011] Furthermore, one end of the magnetic scale is wrapped around the wedge and then inserted into the first bending groove of the upper connecting plate, and the wedge is continuously compressed through the continuously narrowing notch of the V-shaped groove until the magnetic scale is crushed to death.

[0012] Furthermore, the wedge sleeve plate is provided with a second bending groove, the second bending groove is a V-shaped groove, and the notch of the second bending groove is continuously narrowed.

[0013] Furthermore, the other end of the magnetic scale is wrapped around the wedge and then inserted into the second bending groove of the wedge sleeve plate, and the wedge is continuously compressed through the continuously narrowing notch of the V-shaped groove until the magnetic scale is crushed to death.

[0014] Furthermore, the wedge sleeve plate is provided with a through hole, and one end of the spring passes through the through hole and is connected to the wedge sleeve plate.

[0015] Furthermore, the fixing seat includes a mounting plate and a bending plate, the mounting plate is fixed to the ground, and the bending plate is fixed to the mounting plate.

[0016] Furthermore, the bending plate is provided with a fixing portion and an extending portion connected thereto, and the fixing portion and the mounting plate are fixed by bolts.

[0017] Furthermore, the extension portion is provided with an opening, and the other end of the spring passes through the opening and is connected to the bending plate.

[0018] Furthermore, the magnetic scale also includes a protective layer and a magnetic conductive material, the magnetic conductive material is located between the non-magnetic conductive metal belt and the protective layer, and the conductive metal wire is arranged in the protective layer.

[0019] Compared with the prior art, the utility model determines whether the conductive metal wire and the non-magnetic metal belt are energized, thereby determining whether each of them is broken. Since the elongation of the conductive metal wire is less than that of the non-magnetic metal belt, when the conductive metal wire is broken and the non-magnetic metal belt is not broken, it means that the magnetic scale is about to break. If the conductive metal wire is broken and the non-magnetic metal belt is broken, it means that the magnetic scale is broken at this time. The utility model makes little change to the installation method of the elevator magnetic scale, and can effectively check the magnetic scale for broken belts. By utilizing the characteristic that the elongation of the conductive metal wire is less than that of the non-magnetic metal belt, the function of warning the magnetic scale for broken belts and warning before the magnetic scale breaks is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the installation of the elevator magnetic scale broken belt detection device.

[0021] Figure 2 This is a schematic diagram of the installation of the elevator magnetic scale broken belt detection device.

[0022] Figure 3 Schematic diagram of the structure of the upper connecting plate.

[0023] Figure 4 Schematic diagram of the cross-sectional structure of the magnetic scale.

[0024] Figure 5 It is a schematic diagram of the structure of the wedge sleeve plate.

[0025] Figure 6 Schematic diagram of the structure of the wedge.

[0026] Description of Figure Numbers:

[0027] 1-upper connecting plate; 11-first bending groove; 2-magnetic scale; 21-conductive metal wire; 22-non-magnetic metal belt; 23-protective layer; 24-magnetic material; 3-first detection switch; 4-second detection switch; 5-wedge sleeve plate; 51-second bending groove; 52-perforation; 6-wedge; 7-fixing seat; 71-mounting plate; 72-bending plate; 721-fixing part; 722-extension part; 7221-opening; 8-spring; 9-bolt. DETAILED DESCRIPTION

[0028] The utility model of the elevator magnetic scale broken belt detection device is further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] See also Figure 1 and Figure 2 The utility model discloses an elevator magnetic scale broken belt detection device, comprising an upper connecting plate 1, a magnetic scale 2, a first detection switch 3, a second detection switch 4 and a wedge sleeve plate 5, wherein the first detection switch 3 is installed on the upper connecting plate 1, and the second detection switch 4 is installed on the wedge sleeve plate 5.

[0030] See also Figure 2 and Figure 3 The upper connecting plate 1 is fixed to the elevator guide rail, and the upper connecting plate 1 is provided with a first bending groove 11, which is a V-shaped groove, and the notch of the first bending groove 11 is continuously narrowed. One end of the magnetic scale 2 is wrapped around the wedge 6 and inserted into the first bending groove 11 of the upper connecting plate 1, and the wedge 6 is continuously compressed through the continuously narrowing notch of the V-shaped groove until the magnetic scale 2 is pressed to death, thereby achieving a fixing effect.

[0031] See also Figure 1 and Figure 4, one end of the magnetic scale 2 is fixed to the upper connecting plate 1, and the other end of the magnetic scale 2 is fixed to the wedge sleeve plate 5. The magnetic scale 2 is provided with a conductive metal wire 21 and a non-magnetic metal belt 22, the elongation of the conductive metal wire 21 is less than the elongation of the non-magnetic metal belt 22, and the fracture of the conductive metal wire 21 occurs before the fracture of the non-magnetic metal belt 22. The magnetic scale 2 also includes a protective layer 23 and a magnetic conductive material 24, the magnetic conductive material 24 is located between the non-magnetic metal belt 22 and the protective layer 23, and the conductive metal wire 21 is arranged in the protective layer 23.

[0032] One end of the conductive metal wire 21 and the non-magnetic metal belt 22 are respectively connected to the first detection switch 3, and the other end of the conductive metal wire 21 and the non-magnetic metal belt 22 are respectively connected to the second detection switch 4. The first detection switch 3 sends an electrical signal to the second detection switch 4 through the conductive metal wire 21 or the non-magnetic metal belt 22. The first detection switch 3 and the second detection switch 4 are both provided with interfaces respectively connected to the conductive metal wire 21 and the non-magnetic metal belt 22 for transmitting electrical signals.

[0033] Compared with the traditional magnetic scale, the magnetic scale 2 of the utility model has a new conductive metal wire 21. The conductive metal wire 21 can be energized to transmit electrical signals, and the ductility of the conductive metal wire 21 is slightly lower than that of the non-magnetic metal belt 22. Since the ductility of the conductive metal wire 21 is slightly lower than that of the non-magnetic metal belt 22, under normal circumstances, the breakage of the conductive metal wire 21 occurs before the non-magnetic metal belt 22, thereby achieving the function of early warning of the breakage of the magnetic scale 2.

[0034] See also Figure 2 and Figure 5 The wedge sleeve plate 5 is provided with a second bending groove 52, which is a V-shaped groove, and the notch of the second bending groove 52 is continuously narrowed. The other end of the magnetic scale 2 is covered with the wedge 6 and inserted into the second bending groove 52 of the wedge sleeve plate 5. The wedge 6 is continuously compressed through the continuously narrowing notch of the V-shaped groove until the magnetic scale 2 is pressed to death, thereby achieving a fixing effect.

[0035] See also Figure 1 and Figure 2 The elevator magnetic scale broken belt detection device also includes a fixing seat 7 and a spring 8. The fixing seat 7 is fixed to the ground. The spring 8 is connected to the wedge sleeve plate 5 and the fixing seat 7 respectively. The upper connecting plate 1, the wedge sleeve plate 5, the fixing seat 7 and the spring 8 cooperate with each other to straighten the magnetic scale 2. The fixing seat 7 includes a mounting plate 71 and a bending plate 72. The mounting plate 71 is fixed to the ground, and the bending plate 72 is fixed to the mounting plate 71. The bending plate 72 is provided with a fixing portion 721 and an extension portion 722 connected thereto. The fixing portion 721 is fixed to the mounting plate 71 by bolts 9.

[0036] See also Figure 2 and Figure 5The wedge sleeve plate 5 is also provided with a through hole 52, and one end of the spring 8 passes through the through hole 52 of the wedge sleeve plate 5, thereby connecting with the wedge sleeve plate 5. The extension 722 of the bending plate 72 of the fixed seat 7 is provided with an opening 7221, and the other end of the spring 8 passes through the opening 7221 of the extension 722, thereby connecting with the bending plate 72, and further connecting the spring 8 with the fixed seat 7. Due to the connection between the fixed seat 7 and the ground and the spring 8 and the wedge sleeve plate 5, the elevator magnetic scale 2 is straightened, which facilitates the reading of the magnetic scale 2.

[0037] When the elevator is in the stopped state and is called, the first detection switch 3 sends an electrical signal to the second detection switch 4 through the conductive metal wire 21. If the second detection switch 4 can receive the electrical signal, it means that the magnetic scale 2 is in normal condition and the elevator is running normally. If the second detection switch 4 fails to receive the electrical signal, it means that the magnetic scale 2 is about to break, the elevator stops responding, and passively enters the protection mode. At this time, the elevator cannot be called through the elevator call button outside the elevator door, and the elevator automatically sends fault information to the maintenance unit, waiting for professional personnel to repair it.

[0038] When the passenger enters the elevator car and the elevator is in normal operation, the first detection switch 3 sends an electrical signal to the second detection switch 4 at a high frequency through the conductive metal wire 21. If the second detection switch 4 receives the electrical signal, the elevator is operating normally. If the second detection switch 4 fails to receive the electrical signal, the second detection switch 4 sends an electrical signal to the first detection switch 3 through the non-magnetic conductive metal belt 22.

[0039] If the first detection switch 3 can receive an electrical signal, it means that the magnetic scale 2 is about to break. The elevator runs normally to the base station floor, opens the door to release the passengers, and then actively enters the protection mode. At this time, the elevator cannot be called from the elevator call button outside the floor door. In order to prevent passengers from leaving the car in time, the door opening button in the elevator car can still respond. After the elevator enters the protection mode, it automatically sends fault information to the maintenance unit and waits for professional personnel to repair it.

[0040] If the first detection switch 3 fails to receive an electrical signal, it indicates that the magnetic scale 2 has broken, and the elevator passively enters the protection mode. The elevator starts braking to stop, and a voice message is broadcast inside the car to comfort the passengers. At the same time, rescue information and fault information are automatically sent to the maintenance unit to urge the maintenance unit to organize rescue.

[0041] In summary, the utility model determines whether the conductive metal wire 21 and the non-magnetic metal belt 22 are energized, thereby determining whether each of them is broken. Since the elongation of the conductive metal wire 21 is less than that of the non-magnetic metal belt 22, when the conductive metal wire 21 is broken and the non-magnetic metal belt 22 is not broken, it means that the magnetic scale 2 is about to break. If the conductive metal wire 21 is broken and the non-magnetic metal belt 22 is broken, it means that the magnetic scale 2 is broken at this time. The utility model makes little change to the installation method of the elevator magnetic scale, and can effectively check the magnetic scale 2 for broken belts. By utilizing the characteristic that the elongation of the conductive metal wire 21 is less than that of the non-magnetic metal belt 22, the function of warning the magnetic scale 2 for broken belts and warning before the magnetic scale 2 is broken is achieved.

[0042] The above description is a detailed description of the preferred feasible embodiments of the utility model, but the embodiments are not intended to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit disclosed by the utility model should fall within the patent scope covered by the utility model.

Claims

1. An elevator magnetic scale broken belt detection device, characterized in that: include: An upper connecting plate, a magnetic scale, a first detection switch, a second detection switch and a wedge sleeve plate, wherein the first detection switch is installed on the upper connecting plate, and the second detection switch is installed on the wedge sleeve plate; One end of the magnetic scale is fixed to the upper connecting plate, and the other end of the magnetic scale is fixed to the wedge sleeve plate. The magnetic scale is provided with a conductive metal wire and a non-magnetic metal belt. The elongation of the conductive metal wire is less than that of the non-magnetic metal belt. The rupture of the conductive metal wire occurs before the rupture of the non-magnetic metal belt. One end of the conductive metal wire and the non-magnetic metal strip is connected to the first detection switch respectively, and the other end of the conductive metal wire and the non-magnetic metal strip is connected to the second detection switch respectively, and the first detection switch sends an electrical signal to the second detection switch through the conductive metal wire or the non-magnetic metal strip; It also includes a fixing seat and a spring. The fixing seat is fixed to the ground. The spring is connected to the wedge sleeve plate and the fixing seat respectively. The upper connecting plate, the wedge sleeve plate, the fixing seat and the spring cooperate with each other to straighten the magnetic scale.

2. The elevator magnetic scale broken belt detection device according to claim 1 is characterized in that: The upper connecting plate is fixed to the elevator guide rail, and the upper connecting plate is provided with a first bending groove, the first bending groove is a V-shaped groove, and the notch of the first bending groove is continuously narrowed.

3. The elevator magnetic scale broken belt detection device according to claim 2 is characterized in that: One end of the magnetic scale is wrapped around the wedge and inserted into the first bending groove of the upper connecting plate. The wedge is continuously compressed through the continuously narrowing notch of the V-shaped groove until the magnetic scale is crushed to death.

4. The elevator magnetic scale broken belt detection device according to claim 1 is characterized in that: The wedge sleeve plate is provided with a second bending groove, the second bending groove is a V-shaped groove, and the notch of the second bending groove is continuously narrowed.

5. The elevator magnetic scale broken belt detection device according to claim 4 is characterized in that: The other end of the magnetic scale is wrapped around the wedge and inserted into the second bending groove of the wedge sleeve plate. The wedge is continuously compressed through the continuously narrowing notch of the V-shaped groove until the magnetic scale is crushed to death.

6. The elevator magnetic scale broken belt detection device according to claim 1, characterized in that: The wedge sleeve plate is provided with a through hole, and one end of the spring passes through the through hole and is connected with the wedge sleeve plate.

7. The elevator magnetic scale broken belt detection device according to claim 1, characterized in that: The fixing seat comprises a mounting plate and a bending plate, the mounting plate is fixed to the ground, and the bending plate is fixed to the mounting plate.

8. The elevator magnetic scale broken belt detection device according to claim 7, characterized in that: The bending plate is provided with a fixing portion and an extending portion connected therewith, and the fixing portion and the mounting plate are fixed by bolts.

9. The elevator magnetic scale broken belt detection device according to claim 8, characterized in that: The extension part is provided with an opening, and the other end of the spring passes through the opening and is connected with the bending plate.

10. The elevator magnetic scale broken belt detection device according to claim 1, characterized in that: The magnetic scale also includes a protective layer and a magnetic conductive material. The magnetic conductive material is located between the non-magnetic conductive metal belt and the protective layer, and the conductive metal wire is arranged in the protective layer.

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