Elevator traction sheave rope groove wear detection device

Abstract

The present invention discloses a device for detecting the wear of an elevator traction sheave rope groove, comprising a mounting base for mounting a traction sheave, the mounting base being used to mount a traction sheave, the traction sheave being provided with a plurality of traction sheave grooves surrounding the traction sheave, each traction sheave groove being provided with a traction rope; when the traction rope is provided in the traction sheave groove, a detection area is formed in the bottom area of ​​the traction sheave, and a detection device is installed in the detection area; the bottom of the detection device is mounted on a support plate, and a plurality of detection devices are provided, each of which is provided in the traction sheave groove, and when not being tested, neither side surface of the detection device contacts the traction rope friction contact surface of the traction sheave groove. The present invention is used for detecting wear of the traction sheave groove contact surface, utilizing airflow to clean the traction sheave groove, and also utilizing airflow to detect the degree of wear of the traction rope friction contact surface, thereby quickly determining the degree of wear and eliminating the tedious steps of manual testing.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator detection, and in particular to a device for detecting the wear of a rope groove of an elevator traction wheel. Background Art

[0002] The traction sheave is the sheave on the hoist, also known as the traction sheave or drive sheave. It is the device that transmits the traction power of the elevator, using the friction between the traction wire rope and the rope grooves on the traction sheave flange to transmit power. After long-term use, the traction sheave's grooves will wear. When the wear reaches a certain level, the traction sheave needs to be replaced to avoid elevator accidents. However, the existing technology for detecting traction sheave wear has the following shortcomings:

[0003] Manual inspection of traction sheave wear is a traditional method, which has the following shortcomings:

[0004] 1. Subjectivity: Manual inspection is subject to the subjective judgment and experience of the inspector, and the test results may contain errors and inconsistencies;

[0005] 2. Time-consuming: Manual inspection takes a long time, especially in the case of large elevators, which requires more time and manpower;

[0006] 3. Inaccuracy: Manual inspection may miss some minor wear and tear that may negatively affect the safety and performance of the traction sheave;

[0007] In addition, when dust falls on the traction sheave, the following problems may occur:

[0008] Reduced traction: If a lot of dust and dirt accumulates on the traction sheave, its friction will be reduced, resulting in a decrease in the traction force of the elevator, thus affecting the operating efficiency of the elevator;

[0009] Increased wear: When there is dust and dirt on the traction sheave, the friction between the traction sheave and the wire rope will increase when the elevator is running, causing the traction sheave to wear more severely, thereby shortening the life of the elevator traction sheave and wire rope;

[0010] Reduced safety: If the traction sheave is covered with a lot of dust and dirt, the friction between the traction sheave and the wire rope will be reduced, which may cause the traction sheave to slip or skid when the elevator goes up or down, thereby increasing the risk and safety hazards of the elevator;

[0011] Therefore, dust on the elevator traction sheave needs to be cleaned and maintained in time to ensure the normal operation and safety of the elevator. Summary of the Invention

[0012] In order to solve the above problems, the present invention provides an elevator traction sheave rope groove wear detection device, which can effectively remove dust and prevent dust adhesion during daily use. During detection, it only needs to control the expansion and press the friction contact surface of the traction sheave and the traction rope, and use the air flow to detect the air flow pressure, thereby realizing rapid detection of the traction sheave wear. The detection efficiency is higher and the detection method is also very simple, which can effectively solve the shortcomings of the existing technology.

[0013] The present invention is achieved through the following technical solutions: A device for detecting the wear of an elevator traction sheave rope groove, comprising:

[0014] A mounting seat, wherein the mounting seat is used to mount a traction sheave, wherein a plurality of traction sheave grooves are arranged around the traction sheave, and a traction rope is arranged in each traction sheave groove;

[0015] After the traction rope is laid in the traction sheave groove, a detection area is formed in the bottom area of ​​the traction sheave, and a detection device is installed in the detection area;

[0016] The bottom of the detection device is installed on the support plate. There are multiple detection devices, which are respectively arranged in the traction wheel groove. When not detecting, both sides of the detection device do not contact the traction rope friction contact surface of the traction wheel groove.

[0017] As a preferred technical solution, when the detection device is not detecting, the detection surface of the detection device corresponds to the friction contact surface of the traction rope.

[0018] As an optimal technical solution, the detection devices include a connecting frame fixedly arranged on a support plate, a movable splint is respectively arranged on both sides of the connecting frame, the movable splint forms a detection surface relative to the friction contact surface of the traction rope, and a recessed installation cavity is formed on the side of the movable splint away from the detection surface, a micro air pump, a power supply and a detection main board are installed in the installation cavity, the detection main board is connected to an external main controller through a wireless module, the power supply is used to power the micro air pump, the micro air pump is controlled by the detection main board, and a blowing hole is formed on the detection surface of the movable splint at the output end of the micro air pump, and the air flow output by the micro air pump is blown out through the blowing hole.

[0019] As an optimal technical solution, an air blowing pipe is provided in the air hole, and an air pressure sensor is installed in the air blowing pipe. The signal output end of the air pressure sensor is connected to the detection main board, and the air flow output by the micro air pump is blown out through the air blowing pipe to the friction contact surface of the traction rope.

[0020] As an optimal technical solution, double-headed electric push rods are installed on both sides of the connecting frame. The heads of the electric push rods are extended into the mounting cavity of the movable splint and fixedly connected to the bottom surface of the mounting cavity. The electric push rods are powered by a power supply and controlled to open and close by the detection mainboard.

[0021] As a preferred technical solution, a through slot is provided on the bottom surface of the installation cavity, and an elastic rubber pad is fixedly filled in the slot. The other side of the elastic rubber pad is slightly convex to the detection surface, and the elastic rubber pad corresponds to the friction contact surface of the traction rope.

[0022] As a preferred technical solution, a rubber contact layer is provided on the detection surface.

[0023] As a preferred technical solution, one side of the support plate is fixedly mounted on the mounting seat, and reinforcing ribs are provided at the bottom of the support plate.

[0024] As a preferred technical solution, it also includes a main controller, which is installed on the support plate and performs wireless data transmission with the remote server.

[0025] The beneficial effects of the present invention are as follows: 1. When wear detection is not required, the present invention does not contact the traction sheave, does not affect the use of the traction sheave and the traction rope, and uses a micro air pump to blow air on the contact surface between the traction sheave and the traction rope to prevent dust and other solid particles from adhering;

[0026] 2. When the wear degree detection is required, the present invention controls the movable splint to move toward the friction contact surface of the traction rope. When pressed, gas is blown into the friction contact surface of the traction rope. When pressed, the elastic rubber pad seals one side of the wear surface, and the air flow blows to the air channel formed between the wear surface and the movable splint. The wear condition of the wear surface is judged by the pressure value when blowing out. If the pressure value is large, it means that the air channel is small and the wear is not serious. On the contrary, if the pressure is not large, it means that the wear surface is large and the air channel formed is larger. At this time, the degree of wear can be quickly known, and the detection is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a side structural schematic diagram of the present invention;

[0030] Figure 3 It is a schematic diagram of the partial structure of the detection device and the traction sheave of the present invention;

[0031] Figure 4 Schematic diagram of the detection surface end of the detection device of the present invention;

[0032] Figure 5 Schematic diagram of the structure of the detection device of the present invention during detection;

[0033] Description of reference numerals:

[0034] 1. Mounting base; 2. Traction sheave; 3. Support plate; 4. Main controller; 5. Traction rope; 6. Traction sheave groove; 7. Detection device; 8. Connecting frame; 21. Traction rope friction contact surface; 22. Wear air duct; 71. Elastic rubber pad; 72. Movable splint; 73. Blowing hole; 74. Rubber contact layer; 75. Blowing pipe; 76. Mounting cavity; 77. Detection main board; 78. Power supply; 79. Micro air pump; 80. Electric push rod. DETAILED DESCRIPTION

[0035] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0036] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0037] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0038] In addition, in the description of the present invention, “a plurality of” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0039] Terms such as "upper", "above", "lower", and "below" used in the present invention to indicate spatial relative positions are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative position may be intended to include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device in the figure is turned over, the unit described as being "below" or "beneath" other units or features will be located "above" the other units or features. Therefore, the exemplary term "below" can encompass both the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0040] In the present invention, unless otherwise expressly specified or limited, terms such as "disposed," "socketed," "connected," "through," and "inserted" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly specified or limited. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] like Figure 1 As shown, an elevator traction sheave rope groove wear detection device of the present invention includes a mounting base 1, the mounting base 1 is used to mount a traction sheave 2, a plurality of traction sheave grooves 6 are arranged around the traction sheave 2, and a traction rope 5 is arranged in each traction sheave groove 6. Screws and screw holes are provided on the mounting base 1, which is installed in the car, and then the traction sheave 2 and the traction rope 5 are installed.

[0042] When the traction rope 5 is laid in the traction sheave groove 6, a detection area is formed in the bottom area of ​​the traction sheave 2, and a detection device 7 is installed in the detection area. Figure 1 As shown, after the traction rope 5 is installed, the bottom area of ​​the traction sheave 2 will not have any contact area with the traction rope 5, so installing the detection device 7 in this area will not affect the use of the traction sheave 2, and the bottom space is used reasonably;

[0043] In order to ensure that the detection device 7 can always be located at the bottom position of the traction sheave 2 and complete the detection, in this embodiment, the bottom of the detection device 7 is installed on the support plate 3, and the detection device 7 is provided in multiple forms. For example, if the traction sheave 2 has five wheel grooves, five detection devices 7 are provided, which are respectively provided in the traction sheave grooves 6, and when not detecting, both side surfaces of the detection device 7 do not contact the friction contact surface of the traction rope 5 in the traction sheave groove 6. Therefore, when detection is not required, the detection device 7 does not affect the normal use of the traction sheave 2 and the traction rope 5, and there will be no friction interference. When the wear needs to be detected, the traction sheave 2 and the traction rope 5 are stopped, and the detection surface of the detection device 7 is aligned with the wheel groove of the traction sheave 2 for detection.

[0044] like Figure 1 and Figure 2 As shown, when the detection device 7 is not detecting, the detection surface of the detection device 7 corresponds to the friction contact surface of the traction rope 5. When detection is required, the detection surface of the detection device 7 corresponds to the friction contact surface of the traction rope 5 and is pressed tightly.

[0045] like Figure 3-Figure 5 As shown, the detection device 7 includes a connecting frame 8 fixedly arranged on the support plate 3, and a movable splint 72 is respectively arranged on both sides of the connecting frame 8. The movable splint 72 forms a detection surface with respect to the friction contact surface of the traction rope 5, and a recessed installation cavity 76 is formed on the side of the movable splint 72 away from the detection surface. A micro air pump 79, a power supply 78 and a detection main board 77 are installed in the installation cavity 76. The detection main board 77 is connected to the external main controller 4 through a wireless module. The power supply 78 is used to power the micro air pump 79, and the micro air pump 79 is controlled by the detection main board 77. The movable splint at the output end of the micro air pump 79 A blowing hole 73 is formed on the detection surface 72, and the air flow output by the micro air pump 79 is blown out through the blowing hole 73. When detection is required, a remote instruction is sent to the server side, and the server controls the main controller 4 to apply a control command to each detection main board 77, and then uses the detection device 7 to perform detection. The micro air pump 79 is used for blowing. When no detection is required, the timing can be set to automatically start blowing to achieve the purpose of removing dust. When the movable splint 72 is pushed out, the micro air pump 79, the power supply 78 and the detection main board 77 move with it. The power supply 78 can be a storage battery, which can be replaced manually regularly.

[0046] like Figure 4As shown, an air blowing pipe 75 is provided in the air hole 73, and an air pressure sensor is installed in the air blowing pipe 75. The signal output end of the air pressure sensor is connected to the detection main board 77. The air flow output by the micro air pump 79 is blown out through the air blowing pipe 75 to the friction contact surface of the traction rope 5. When the micro air pump 79 is turned on, the gas will pass through the air blowing pipe 75 and be blown out. At this time, the pressure value of the blown gas can trigger the air pressure sensor. Specifically, a concave hole can be opened in the wall of the air blowing pipe 75, and an air pressure sensor is set in the concave hole. When the gas is blown out from the air blowing pipe 75, if the output end of the air blowing pipe 75 is blocked or the output end becomes narrow, the gas output by the micro air pump 79 will act on the air pressure sensor. The greater the pressure detected by the air pressure sensor end, the smaller the opening of the output end of the air blowing pipe 75, and vice versa.

[0047] In order to press the movable splint 72 toward the friction contact surface of the traction rope 5, double-headed electric push rods 80 are respectively installed on both sides of the connecting frame 8. The heads of the electric push rods 80 are both inserted into the mounting cavity 76 of the movable splint 72 and fixedly connected to the bottom surface of the mounting cavity 76. The electric push rods 80 are powered by the power supply 78 and controlled to open and close by the detection main board 77. When the electric push rods 80 push out the movable splint 72, the movable splint 72 will be close to the friction contact surface of the traction rope 5. The friction contact surface of the traction rope 5 is the contact surface between the traction rope 5 and the traction wheel 2 during the transmission process, that is, the surface It is a friction surface, so this surface often wears out. After wear, the traction rope 5 will move toward the bottom of the traction wheel groove 6, and the opening of the traction rope 5 groove becomes larger. Therefore, after the friction contact surface of the traction rope 5 is worn, a concave surface will usually be formed. It may be a regular wear surface or an irregular wear surface, but the basic wear shape is a circular arc-shaped concave surface. Therefore, when the arc-shaped movable splint 72 is attached to the friction contact surface of the traction rope 5, the movable splint 72 will completely cover the entire friction contact surface of the traction rope 5. Therefore, when it is covered, a wear airway 22, that is, a concave cavity, will be formed.

[0048] In order to seal one side of the wear air duct 22, in this embodiment, a through slot is opened on the bottom surface of the mounting cavity 76, and an elastic rubber pad 71 is fixedly filled in the slot. The other side of the elastic rubber pad 71 is slightly convex to the detection surface. The elastic rubber pad 71 corresponds to the friction contact surface of the traction rope 5. When the movable splint 72 is pushed out by the electric push rod 80, the elastic rubber pad 71 will be pressed toward the wear area. After it is fully in contact, it will elastically deform and seal one side opening of the entire wear air duct 22. The air blowing pipe 75 is located on the side with the elastic rubber pad 71. At this time, the wear air duct 22 has only one opening direction, that is, away from the opening on the side of the elastic rubber pad 71. When the gas is blown out from the air blowing pipe 75, if the wear air duct 22 is very small, there is almost no air. The pressure of the gas blown out by the air pump 79 is very high, which means that the wear air channel 22 almost does not exist, that is, the entire wear air channel 22 does not exist, and the movable splint 72 is completely in contact with the friction contact surface of the traction rope 5 to achieve a fully sealed or nearly fully sealed state. At this time, the pressure of the gas blown out is extremely high, or it cannot be blown out, and the pressure value acting on the air pressure sensor is extremely high; on the contrary, the more severe the wear, the larger the wear air channel 22. Simply put, the greater the wear, the worse the sealing, and the smaller the pressure acting on the air pressure sensor, the smaller the wear, the better the sealing, the better the sealing, the better the sealing of the friction contact surface between the movable splint 72 and the traction rope 5, and the greater the pressure acting on the air pressure sensor. In this way, judging the degree of wear of the traction wheel 2 is simple and effective.

[0049] In order to improve the sealing performance, in this embodiment, a rubber contact layer 74 is provided on the detection surface, so that when the movable splint 72 is in contact with the traction rope 5 friction contact surface, the sealing performance is better and the accuracy is higher.

[0050] One side of the support plate 3 is fixedly mounted on the mounting base 1 , and a reinforcing rib is provided at the bottom of the support plate 3 to increase the supporting strength.

[0051] Among them, it includes a main controller 4, which is installed on the support plate 3. The main controller 4 performs wireless data transmission with the remote server. When the detection main board 77 detects the pressure value, the detection value is fed back to the main controller 4 through the wireless transceiver module on the detection main board 77. The main controller 4 sends the value to the remote server end in a centralized manner. At this time, the detection result can be quickly known and stored.

[0052] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. An elevator traction sheave rope groove wear detection device, characterized in that: include: A mounting seat (1), wherein the mounting seat (1) is used to mount a traction wheel (2), a plurality of traction wheel grooves (6) are arranged on the traction wheel (2) around the traction wheel (2), and a traction rope (5) is arranged in each traction wheel groove (6); When the traction rope (5) is arranged in the traction sheave groove (6), a detection area is formed in the bottom area of ​​the traction sheave (2), and a detection device (7) is installed in the detection area; The bottom of the detection device (7) is mounted on the support plate (3), and a plurality of detection devices (7) are provided, which are respectively arranged in the traction wheel groove (6), and when not detecting, both side surfaces of the detection device (7) do not contact the friction contact surface of the traction rope (5) of the traction wheel groove (6); The detection device (7) includes a connecting frame (8) fixedly arranged on the support plate (3), a movable splint (72) is respectively arranged on both sides of the connecting frame (8), the movable splint (72) forms a detection surface relative to the friction contact surface of the traction rope (5), and a recessed installation cavity (76) is formed on the side of the movable splint (72) away from the detection surface, and a micro air pump (79), a power supply (78) and a detection main board (77) are installed in the installation cavity (76), and the detection main board (77) is connected to the external main controller (4) through a wireless module, and the power supply (78) is used to supply power to the micro air pump (79). The micro air pump (79) is controlled by the detection main board (77), and a blowing hole (73) is formed on the detection surface of the movable splint (72) at the output end of the micro air pump (79), and the air flow output by the micro air pump (79) is blown out through the blowing hole (73); An air blowing pipe (75) is provided in the air blowing hole (73), and an air pressure sensor is installed in the air blowing pipe (75). The signal output end of the air pressure sensor is connected to the detection main board (77). The air flow output by the micro air pump (79) is blown out to the friction contact surface of the traction rope (5) through the air blowing pipe (75).

2. The elevator traction sheave rope groove wear detection device according to claim 1, characterized in that: When the detection device (7) is not detecting, the detection surface of the detection device (7) corresponds to the friction contact surface of the traction rope (5).

3. The elevator traction sheave rope groove wear detection device according to claim 1, characterized in that: Double-headed electric push rods are respectively installed on both sides of the connecting frame (8), and the heads of the electric push rods are both inserted into the installation cavity (76) of the movable splint (72) and fixedly connected to the bottom surface of the installation cavity (76). The electric push rods are powered by a power supply (78) and controlled to open and close by a detection mainboard (77).

4. The elevator traction sheave rope groove wear detection device according to claim 1, characterized in that: The bottom surface of the installation cavity (76) is provided with a through slot, and an elastic rubber pad (71) is fixedly filled in the slot. The other side of the elastic rubber pad (71) is slightly convex to the detection surface, and the elastic rubber pad (71) corresponds to the friction contact surface of the traction rope (5).

5. The elevator traction sheave rope groove wear detection device according to claim 1 or 2, characterized in that: A rubber contact layer (74) is provided on the detection surface.

6. The elevator traction sheave rope groove wear detection device according to claim 1, characterized in that: One side of the support plate (3) is fixedly mounted on the mounting seat (1), and a reinforcing rib is provided at the bottom of the support plate (3).

7. The elevator traction sheave rope groove wear detection device according to claim 1, characterized in that: It also includes a main controller (4), which is mounted on the support plate (3) and performs wireless data transmission with a remote server.

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