Block type elevator traction machine brake monitoring mechanism

Abstract

A block type elevator traction machine brake monitoring mechanism comprises a traction machine and two block type brakes. The block brake comprises a fixed disc and a movable disc, and the machine base is provided with a brake monitoring device, a rotation monitoring module used for monitoring whether the traction machine is braked or not and two brake monitoring modules used for monitoring whether the movable disc executes a brake action or not. The brake monitoring device comprises a monitoring control module which is used for judging whether the traction machine is effectively braked or not according to monitoring data of the rotation monitoring module after the movable disc executes the brake action. After the movable disc of the brake executes the braking action, the monitoring control module can judge whether the traction machine is effectively braked or not according to data of the rotation monitoring module, and therefore even if a brake pad of the brake is seriously abraded, the situation that braking force is insufficient can be found in time by directly monitoring the braking effect of the traction wheel, and the braking effect of the traction wheel is effectively monitored. And elevator safety accidents are avoided, and safe operation of the elevator is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, and particularly relates to a block type elevator traction machine brake monitoring mechanism. Background Art

[0002] The block type brake is integrated on the elevator traction machine and is an important part of the car traction elevator. The electromagnet in the block type brake has the advantages of simple structure, safe and reliable operation, and thus is widely used.

[0003] Referring to a new type of brake state detection device disclosed in the Chinese patent with the publication number CN203903709U, which includes a brake with a moving disk and a static disk and a brake mounting seat. A proximity switch that can work without mechanical direct contact with moving parts is installed on the moving disk or the static disk of the brake or on the brake mounting seat. When the moving disk and the static disk of the brake are attracted / separated, the action of the moving disk can directly or indirectly drive the proximity switch to work, so that the state of the brake is detected by the proximity switch and the signal is fed back to the control system. In this technical solution, when the brake executes the braking action, the action of the moving disk will drive the proximity switch to work, thereby feeding back the state of the brake to the control system.

[0004] However, although this method can judge whether the brake executes the braking action to a certain extent, it cannot directly monitor the braking effect of the traction wheel. Especially when the brake brake pads are severely worn, although the moving disk can normally execute the braking action, the braking effect of the brake pads on the traction wheel will be greatly reduced or even unable to effectively stop the traction wheel. At this time, if only relying on the detection result of the proximity switch, the control system may misjudge that the brake is in a normal working state, thus easily causing elevator safety accidents. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a block type elevator traction machine brake monitoring mechanism.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A block type elevator traction machine brake monitoring mechanism includes a traction machine and two block type brakes respectively located on the left and right sides of the traction machine; the block type brake includes a fixed disk, a moving disk, and a guide post. The two ends of the guide post are respectively fixedly connected to the fixed disk and the machine base of the traction machine, and the moving disk is installed on the guide post and can move along the guide post. The characteristic is that: a braking monitoring device, a rotation monitoring module for monitoring whether the traction machine is stopped, and two braking monitoring modules for monitoring whether the moving disk executes the braking action are arranged on the machine base, and the monitoring end of the rotation monitoring module correspondingly monitors the traction wheel of the traction machine;

[0008] The monitoring ends of two braking monitoring modules respectively correspond to the moving discs of two block brakes. The braking monitoring device includes a monitoring and control module for determining whether the traction machine is effectively stopped according to the monitoring data of the rotation monitoring module after the moving disc executes a braking action. The monitoring and control module is communicatively connected to the rotation monitoring module and the two braking monitoring modules.

[0009] In the present utility model, a first monitoring seat is provided on the machine base. The rotation monitoring module is installed on the first monitoring seat, and a rotating measured part corresponding to the detection end of the rotation monitoring module is provided on the traction wheel.

[0010] In the present utility model, the first monitoring seat is adjustably installed on the machine base.

[0011] In the present utility model, the rotation monitoring module is a photoelectric sensor, the rotating measured part is a measured gear installed on the traction wheel, and the photoelectric sensor faces the measured gear.

[0012] In the present utility model, a second monitoring seat is provided on the machine base. The braking monitoring module is a proximity switch installed on the second monitoring seat, and a measured module capable of moving with the moving disc and being monitored by the proximity switch is provided on the moving disc.

[0013] In the present utility model, the measured module includes a measured seat installed on the moving disc and a measured part adjustably installed on the measured seat.

[0014] In the present utility model, two second long circular holes are provided on the measured seat, two second screw holes are provided on the measured part, each second long circular hole corresponds to a second screw hole, and a second bolt passing through the second long circular hole is threadedly connected to the second screw hole.

[0015] In the present utility model, the braking monitoring device further includes a monitoring housing installed on the machine base and a wireless communication module for wirelessly communicatively connecting with an elevator control cabinet or / and a manufacturer service platform. The monitoring and control module and the wireless communication module are installed in the monitoring housing, and the braking monitoring module is electrically connected to the wireless communication module.

[0016] Advantages of the present utility model: By setting the rotation monitoring module and the monitoring and control module, after the moving disc of the brake executes a braking action, the monitoring and control module will determine whether the traction machine is effectively stopped according to the data of the rotation monitoring module. Thus, through the combined use of the monitoring and control module and the rotation monitoring module, the braking effect of the traction wheel can be directly and accurately monitored. Therefore, even when the brake pads are severely worn, the situation of insufficient braking force can be timely detected by directly monitoring the braking effect of the traction wheel, avoiding the occurrence of elevator safety accidents and ensuring the safe operation of the elevator. Brief Description of the Drawings

[0017] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0018] Figure 1 is the front view of this embodiment;

[0019] Figure 2 is the installation schematic diagram of the module to be measured;

[0020] Figure 3 is the side view of this embodiment;

[0021] Figure 4 is the installation schematic diagram of the rotation monitoring module;

[0022] Figure 5 is the connection block diagram of this embodiment. Detailed Embodiment

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then such directional indications will also change accordingly.

[0025] In addition, if there is a description involving "second" or "second" etc. in the embodiments of the present utility model, then such description of "second" or "second" etc. is only for descriptive purposes and cannot be understood as indicating or implying its relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "second", "second" etc. may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0026] Refer to Figures 1-5, a block type elevator traction machine brake monitoring mechanism, including a traction machine and two block type brakes respectively located on the left and right sides of the traction machine; the block type brake includes a fixed disk 1, a moving disk 2, a spring body, a coil winding, a guide post 3 and a brake pad. The coil winding is arranged in the fixed disk 1. The two ends of the guide post 3 are respectively fixedly connected to the fixed disk 1 and the base 4 of the traction machine. The moving disk 2 is installed on the guide post 3 and can move along the guide post 3. The spring body is arranged between the fixed disk 1 and the moving disk 2. The brake pad is installed at one end of the moving disk 2 facing away from the moving disk 2, and the brake pad corresponds to the brake wheel of the traction machine. The above is the prior art, so no specific description will be made.

[0027] Furthermore, a brake monitoring device 5, a rotation monitoring module 6 for monitoring whether the traction machine is stopped, and two brake monitoring modules 7 for monitoring whether the moving disk 2 performs a braking action are provided on the base 4. The monitoring end of the rotation monitoring module 6 correspondingly monitors the traction wheel 8 of the traction machine; the monitoring ends of the two brake monitoring modules 7 respectively correspond to the moving disks 2 of the two block type brakes. The brake monitoring device 5 includes a monitoring control module 51 for judging whether the traction machine is effectively stopped according to the monitoring data of the rotation monitoring module 6 after the moving disk 2 performs a braking action. The monitoring control module 51 is communicatively connected to the rotation monitoring module 6 and the two brake monitoring modules 7.

[0028] During operation, when the brake monitoring module 7 monitors that the moving disk 2 performs a braking action, the monitoring control module 51 monitors whether the traction wheel 8 is stopped through the rotation monitoring module 6. If the traction wheel 8 is not stopped, the monitoring control module 51 issues an alarm signal to facilitate notifying external personnel to handle the elevator failure problem in time; if the traction wheel 8 is stopped, the brake monitoring module 7 sends a normal braking command to the elevator control cabinet to enable the elevator control cabinet to normally control the elevator operation.

[0029] As a preferred implementation manner, a first monitoring seat 41 is provided on the base 4. The first monitoring seat 41 is adjustably installed on the base 4. For example, a first long circular hole 411 is provided on the first monitoring seat 41, and a first bolt 10 is inserted through the first long circular hole 411. The screw end of the first bolt 10 is threadedly connected to the installation screw hole of the base 4. When the position needs to be adjusted, loosen the first bolt 10, and then the position can be adjusted along the length direction of the first long circular hole 411, so as to adjust the front and back position of the rotation monitoring module 6 on the base 4.

[0030] In this embodiment, the rotation monitoring module 6 is installed on the first monitoring base 41, and a rotating measured part 81 corresponding to the detection end of the rotation monitoring module 6 is provided on the traction sheave 8; specifically, the rotation monitoring module 6 is a photoelectric sensor, and the rotating measured part 81 is a measured gear installed on the traction sheave 8. The measured gear rotates synchronously with the traction sheave 8. The photoelectric sensor faces the measured gear. The measured gear has teeth and tooth grooves. When the teeth of the measured gear block the optical path of the photoelectric sensor, the photoelectric switch outputs a high level, otherwise it outputs a low level. The monitoring and control module 51 can then obtain whether the traction sheave 8 rotates according to the level signal sent by the photoelectric sensor.

[0031] As a preferred implementation manner, a second monitoring base 42 is provided on the machine base 4. The braking monitoring module 7 is a proximity switch installed on the second monitoring base 42. A measured module 9 that can move with the moving disk 2 and can be monitored by the proximity switch is provided on the moving disk 2. The measured module 9 includes a measured base 91 installed on the moving disk 2 and a measured part 92 installed on the measured base 91 in a position-adjustable manner. Specifically, two second long circular holes 911 are provided on the measured base 91. The second long circular holes 911 extend in the vertical direction. Two second screw holes are provided on the measured part 92. Each second long circular hole 911 corresponds to a second screw hole. A second bolt 10 inserted through the second long circular hole 911 is threadedly connected to the second screw hole. After loosening the second bolt 10, the measured part 92 can move up and down to adjust its position, so as to better cooperate with the braking monitoring module 7 for induction, which is especially suitable for the retrofit of old elevators.

[0032] As a preferred implementation manner, the braking monitoring device 5 further includes a monitoring housing installed on the machine base 4 and a wireless communication module 53 for wireless communication connection with an elevator control cabinet or / and a manufacturer service platform. The monitoring and control module 51 and the wireless communication module 53 are installed in the monitoring housing. The braking monitoring module 7 is electrically connected to the wireless communication module 53 and the storage battery 52. In this embodiment, the wireless communication module 53 is wirelessly connected to the elevator control cabinet and the manufacturer service platform, so as to send an alarm signal when a block brake fails.

[0033] As a preferred implementation manner, the storage battery 52 is connected through a charging circuit 54 to a vibration power generation module 55 provided inside the device housing. When the elevator traction machine is running, the traction machine will generate a certain amount of vibration. The vibration power generation module 55 generates electric energy through these vibrations and inputs it to the storage battery 52 through the charging circuit 54, so that the vibration power generation module 55 can charge the storage battery 52, achieving an environmental protection effect and also eliminating the trouble of wiring and power-on, which is especially suitable for the retrofit of old elevators. Of course, it is not limited to the above structure. In other embodiments, the charging circuit 54 can also be connected to the power system of the elevator to charge the storage battery 52 by accessing the power supply.

[0034] The above are only the preferred embodiments of the present utility model, and all technical solutions that achieve the purpose of the present utility model by substantially the same means fall within the protection scope of the present utility model.

Claims

1. A block-type elevator traction machine brake monitoring mechanism, comprising a traction machine and two block-type brakes respectively located on the left and right sides of the traction machine; the block-type brake comprises a fixed plate (1), a moving plate (2), and a guide column (3), the two ends of the guide column (3) are respectively fixedly connected to the fixed plate (1) and the base (4) of the traction machine, the moving plate (2) is mounted on the guide column (3) and can move along the guide column (3); characterized in that: The machine base (4) is provided with a brake monitoring device (5), a rotation monitoring module (6) for monitoring whether the traction machine is stopped, and two brake monitoring modules (7) for monitoring whether the moving plate (2) performs a braking action, wherein the monitoring end of the rotation monitoring module (6) corresponds to the traction wheel (8) of the traction machine; The monitoring ends of the two brake monitoring modules (7) respectively correspond to the moving discs (2) of the two block brakes. The brake monitoring device (5) comprises a monitoring control module (51) for judging whether the traction machine is effectively stopped according to the monitoring data of the rotation monitoring module (6) after the moving disc (2) performs a braking action. The monitoring control module (51) is communicatively connected with the rotation monitoring module (6) and the two brake monitoring modules (7).

2. A block-type elevator traction machine brake monitoring mechanism according to claim 1, characterized in that: The machine base (4) is provided with a first monitoring seat (41), the rotation monitoring module (6) is mounted on the first monitoring seat (41), and the traction wheel (8) is provided with a rotating measured object (81) corresponding to the detection end of the rotation monitoring module (6).

3. A block-type elevator traction machine brake monitoring mechanism according to claim 2, characterized in that: The first monitoring seat (41) is mounted on the machine base (4) in an adjustable position.

4. A block-type elevator traction machine brake monitoring mechanism according to claim 2, characterized in that: The rotation monitoring module (6) is a photoelectric sensor, the rotating measured component (81) is a measured gear mounted on the traction wheel (8), and the photoelectric sensor faces the measured gear.

5. The block-type elevator traction machine brake monitoring mechanism according to claim 1, characterized in that: The machine base (4) is provided with a second monitoring seat (42), the brake monitoring module (7) is a proximity switch mounted on the second monitoring seat (42), and the moving disc (2) is provided with a module to be tested (9) that can move with the moving disc (2) and can be monitored by the proximity switch.

6. A block-type elevator traction machine brake monitoring mechanism according to claim 5, characterized in that: The measured module (9) comprises a measured seat (91) mounted on the moving plate (2) and a measured object (92) mounted on the measured seat (91) in an adjustable position.

7. A block-type elevator traction machine brake monitoring mechanism according to claim 6, characterized in that: The measured seat (91) is provided with two second oblong holes (911), and the measured object (92) is provided with two second screw holes, each second oblong hole (911) corresponds to a second screw hole, and the second screw hole is threadedly connected with a second bolt (10) inserted into the second oblong hole (911).

8. The block-type elevator traction machine brake monitoring mechanism according to claim 1, characterized in that: The brake monitoring device (5) further comprises a monitoring housing mounted on the machine base (4) and a wireless communication module (53) for wireless communication connection with the elevator control cabinet and / or the manufacturer's service platform, the monitoring control module (51) and the wireless communication module (53) being mounted in the monitoring housing, and the brake monitoring module (7) being electrically connected to the wireless communication module (53).

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