Tension detector for steel wire rope of elevator

Abstract

The invention belongs to the technical field of special equipment detection, and particularly relates to an elevator steel wire rope tension detector. The elevator steel wire rope tensioning force detection device comprises a detection assembly used for detecting the tensioning force of an elevator steel wire rope, and the detection assembly comprises a rectangular block and a detector in the rectangular block; the cleaning assembly is used for cleaning the elevator steel wire rope and comprises a connecting plate arranged below the rectangular block, and a clamping plate and wiping cotton which are arranged below the connecting plate; the connecting rod assembly is used for guiding the connecting plate to move towards the side of the rectangular block. The rectangular block is pushed to approach the elevator steel wire rope, so that the wiping cotton on the clamping plate wipes the surface of the steel wire rope, and the purpose of cleaning oil stains on the surface of the elevator steel wire rope can be achieved. Besides, along with continuous pushing of the rectangular frame, the clamping plates continue to move towards the two sides until the elevator steel wire rope finally enters the U-shaped groove, then detection is conducted, the clamping plates do not need to be disassembled in the process, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of special equipment detection, and in particular relates to an elevator wire rope tensioning force detector. Background Art

[0002] Elevator wire rope is an important component used in elevators, mainly used for load bearing and power transmission. During the transmission process of the elevator, the traction wire rope and the wheel groove will inevitably be worn. If the wear degree of multiple wire ropes is different, it will be difficult to ensure the stability of the transmission system after a long time. Therefore, the tension of each traction rope should be kept uniform during operation.

[0003] A Chinese utility model patent with announcement number CN220165545U discloses an elevator wire rope tension detector, which realizes a more accurate detection function of the wire rope through the cooperation of a rotating shaft, a built-in groove, a pushing mechanism, a detector and a displacement sensor. Among them, by causing the push block to slide inside the built-in groove and the electric detector to move until the detector contacts and squeezes one side of the wire rope, causing the wire rope to deform and bend, and cooperates with the displacement sensor to sense the metal of the wire rope, so that it detects the size of the wire rope between the vertical position and the bent position, and cooperates with the value sensed by the detector, so as to collect data through the controller and calculate the current wire rope tension.

[0004] However, during the actual use of the device, various impurities, such as lubricating oil and other substances, adhere to the wire rope. The contact of the sensor with these impurities will greatly affect the data finally measured by the sensor, and also affect the service life of the sensor. Summary of the invention

[0005] The object of the present invention is to provide an elevator wire rope tension detector, which can clean the elevator wire rope before measuring the tension of the elevator wire rope to avoid contamination of the detection instrument body.

[0006] The technical solution adopted by the present invention to solve the above problem is: an elevator wire rope tension force detector, comprising: A detection assembly, used for detecting the tension of the elevator wire rope; the detection assembly comprises a rectangular block, a U-shaped groove arranged on the rectangular block, a clamping block arranged inside the U-shaped groove, a detector fixedly connected to the bottom of the clamping block and used for detecting the tension, a stop bar used for clamping the wire rope together with the clamping block, and a displacement assembly used for moving the clamping block toward the stop bar; A cleaning assembly, used for cleaning the elevator wire rope; the cleaning assembly comprises a connecting plate arranged below the rectangular block, two groups of clamping plates are symmetrically arranged at the bottom of the connecting plate, and the opposite surfaces of the two groups of clamping plates are provided with wiping cotton for cleaning the wire rope, and a connecting rod assembly arranged on the connecting plate and used for guiding the connecting plate to move toward the side of the rectangular block; The connecting rod assembly includes a first connecting rod hinged to the connecting plate and the rectangular block through a hinge, a sliding rod arranged on the side of the rectangular block through a connecting seat, a sliding block slidably connected to the sliding rod, and a second connecting rod hinged to the sliding block and the first connecting rod through a hinge.

[0007] The detection assembly is mainly used to accurately measure the tension of the elevator wire rope. The rectangular block provides support and structural stability for the entire detection assembly, which is convenient for the fixation and operation of other components. The U-shaped groove provides a fixed channel for the wire rope to be inserted, which is convenient for clamping and measuring. The clamp block and the baffle bar clamp the wire rope, applying the necessary measuring force to the detector to ensure that the detection can be carried out correctly. The displacement assembly is used to move the clamp block toward the baffle bar, thereby clamping the wire rope and improving the convenience of operation.

[0008] The cleaning component cleans the surface of the wire rope before measuring the tension of the wire rope to avoid contamination of the testing instrument and ensure measurement accuracy. It is installed under the rectangular block as the main structure of the cleaning component, connecting the clamping plate and the guide component. The two sets of clamping plates are arranged symmetrically, and the opposite surfaces are affixed with wiping cotton, which can clamp the wire rope and clean its surface. The wiping cotton is a soft material with adsorption properties, which is used to effectively clean foreign matter such as oil, dust and other foreign matter on the surface of the wire rope.

[0009] The connecting rod assembly is used to move the cleaning assembly to both sides of the rectangular block after cleaning the wire rope, so that the tensioning force can be directly measured without removing the cleaning assembly from the wire rope, and the measurement efficiency is high.

[0010] A further preferred technical solution is that the cleaning assembly also includes a movable groove arranged at the bottom of the connecting plate, a bidirectional screw rod rotatably connected to the inside of the movable groove, and two groups of movable blocks threadedly connected to the bidirectional screw rod; the two groups of movable blocks are respectively fixedly connected to the two groups of clamping plates.

[0011] A further preferred technical solution is that the displacement assembly is a cylinder fixedly connected to the top of the rectangular block, and the telescopic end of the cylinder is fixedly connected to the top of the clamping block.

[0012] A further preferred technical solution is that: the slide bar is also sleeved with a spring for pushing up the slide block inward.

[0013] A further preferred technical solution is that: a mounting groove is provided on the inner wall of the U-shaped groove, and a displacement sensor is fixedly connected inside the mounting groove.

[0014] A further preferred technical solution is that: a side portion of the baffle is fixedly connected to a limit strip, an inner wall of the U-shaped groove is provided with a limit groove, and the limit groove is slidably connected to the limit strip.

[0015] A further preferred technical solution is that a mounting bracket is fixedly connected to the side of the rectangular block.

[0016] A further preferred technical solution is that a groove with a semicircular curved surface structure is provided at the bottom of the clamping block and the top of the blocking bar.

[0017] A further preferred technical solution is that the side surface of the clamping plate is semicircular.

[0018] A further preferred technical solution is that: both ends of the spring are fixedly connected to the connecting seat and the sliding block respectively.

[0019] In summary, the present invention has the following benefits: 1. The present invention allows the clamping plates to be outside the elevator steel wire rope at the same time, and pushes the rectangular block to approach the elevator steel wire rope. At this time, the hinged effect between the connecting plate and the rectangular block and the first connecting rod, the sliding cooperation between the sliding rod and the slider, and the hinged effect between the slider and the first connecting rod and the second connecting rod are utilized, so that the two groups of clamping plates on both sides will move to the two ends of the steel wire rope at the same time outside the elevator steel wire rope. At this time, the wiping cotton on the clamping plates will wipe the surface of the steel wire rope, thereby achieving the purpose of cleaning the oil stains on the surface of the elevator steel wire rope.

[0020] 2. In the present invention, as the rectangular frame continues to be pushed, the clamping plate continues to move to both sides until the elevator wire rope finally enters the U-shaped groove, and then the detection is performed. This process does not require the clamping plate to be disassembled, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a vertically sectioned three-dimensional structure of a rectangular block of the present invention when viewed from above; Figure 3 It is a schematic diagram of the three-dimensional structure of the baffle bar of the present invention; Figure 4 It is a bottom-up stereoscopic schematic diagram of the connecting plate and the clamping plate connecting structure of the present invention.

[0022] In the accompanying drawings, the components represented by each reference numeral are as follows: 1. rectangular block; 2. clamping block; 3. cylinder; 4. detector; 5. displacement sensor; 6. baffle bar; 601. limit bar; 602. limit groove; 101. connecting plate; 102. clamping plate; 103. wiping cotton; 104. first connecting rod; 105. sliding rod; 106. sliding block; 107. second connecting rod; 108. spring; 1001. bidirectional screw rod; 1002. moving block. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0025] Example: Embodiment 1: Please combine Figure 1-Figure 4 , an elevator wire rope tension force detector of this embodiment includes: A rectangular block 1 is provided with a U-shaped groove, a clamping block 2 is arranged inside the U-shaped groove, a cylinder 3 is fixedly connected to the top of the rectangular block 1, and the telescopic end of the cylinder 3 is fixedly connected to the clamping block 2, a detector 4 is fixedly connected to the bottom of the clamping block 2, a mounting groove is provided on the inner wall of the U-shaped groove, a displacement sensor 5 is fixedly connected inside the mounting groove, a baffle 6 is fixedly connected to the bottom of the U-shaped groove by fixing bolts, both sides of the baffle 6 are fixedly connected to the limit strip 601, a limit slot 602 is provided on the inner wall of the U-shaped groove corresponding to the position of the limit strip 601 and is slidably connected to the limit strip 601, so as to facilitate the installation of the baffle 6, The width and depth of the slot of the clamp block 2 are designed to fit the specific diameter of the wire rope to achieve a stable fit and support. The bottom of the slot is usually flat or slightly curved to better match the shape of the wire rope and to evenly sense the tension of the elevator wire rope.

[0026] The blocking bar 6 has a similar notch as the clamp block 2, and cooperates with the clamp block 2 to clamp the elevator wire rope. That is, the bottom of the clamp block 2 and the top of the blocking bar 6 are both designed with semicircular curved surface structures, which is convenient for better fitting the elevator wire rope. The cylinder 3 is a device in the prior art that converts the energy of compressed air into mechanical energy. In this embodiment, it includes the following main parts: Cylinder: The main part of the cylinder, made of metal, specifically aluminum alloy. Inside the cylinder is a smooth cylindrical cavity for the piston to move.

[0027] Piston: Located inside the cylinder, it is sealed with the inner wall of the cylinder. The movement of the piston is driven by the air pressure entering the cylinder.

[0028] Piston rod: connected to the piston, with the other end fixedly connected to the clamp block 2, extending or retracting with the movement of the piston, and used to transmit the movement of the piston to drive an external mechanical device.

[0029] Seals: including piston seals, piston rod seals and end cover seals, used to prevent air leakage and ensure the normal operation of the cylinder.

[0030] End cover: installed at both ends of the cylinder, closing the cylinder and providing installation support, equipped with air intake and exhaust interfaces.

[0031] Inlet and exhaust ports: used to connect the air source and exhaust system, control the entry and exhaust of air, and realize the reciprocating motion of the piston.

[0032] In a preferred embodiment, the cylinder 3 is further provided with a buffer device to mitigate the impact of the piston when it reaches the end of the stroke, thereby increasing the service life.

[0033] The detector 4 includes the following components: The sensing element, specifically a piezoelectric material, is used to sense the tension or pressure on the wire rope. In a preferred embodiment, the sensing element is a thin film strain gauge.

[0034] Elastomer: Carries the force of the wire rope and converts it into deformation that can be measured by the sensing element. Made of high-strength material to ensure accuracy and durability.

[0035] Signal conditioning circuit: includes amplifiers and filters, which amplify the weak signal output by the sensor element and process it into a usable electrical signal.

[0036] Data acquisition system: used to record and display measurement results, usually including a microprocessor or controller, in a preferred embodiment, connected to a display screen to output signals in real time.

[0037] Housing and mounting parts: Used to protect internal components from external environmental influences and ensure that the sensor is firmly in contact with the wire rope.

[0038] Power module: Provides necessary power supply for sensors and electronic circuits.

[0039] In a preferred embodiment, the detector 4 is a digital force measuring instrument of model SL-20T.

[0040] In a preferred embodiment, the detector 4 has the same principle as the pressure sensor described in the Chinese utility model patent with publication number CN220165545U.

[0041] The displacement sensor 5 includes the following components: Sensing element: This is the core part of the sensor, responsible for sensing displacement changes. In this embodiment, a laser displacement sensor is used.

[0042] Signal conditioning circuit: including amplifiers, filters and analog-to-digital converters, which adjust the signal output by the sensor to a standard output, such as voltage or current signal, to facilitate subsequent processing and analysis.

[0043] Enclosures and protective structures: used to protect internal components from external environmental influences such as dust, moisture or mechanical damage Data interface: used to transmit the output signal of the sensor to the data acquisition system or control system. In this embodiment, a wireless communication module is used.

[0044] Power module: Provides necessary power supply for sensors and electronic circuits, using external power interface.

[0045] In a preferred embodiment, the displacement sensor 5 has the same principle as the displacement sensor described in the Chinese utility model patent with publication number CN220165545U.

[0046] In a preferred embodiment, the detector 4 and the displacement sensor 5 are electrically connected to the same integrated controller and are controlled by the integrated controller; The cleaning assembly comprises two groups of connecting plates 101 symmetrically arranged below the rectangular block 1 , two groups of clamping plates 102 symmetrically arranged at the bottom of the connecting plates 101 , and wiping cotton 103 is arranged on the opposite surfaces of the two groups of clamping plates 102 .

[0047] A first connecting rod 104 is symmetrically hinged between the connecting plate 101 and the rectangular block 1 through a hinge, and sliding rods 105 are symmetrically fixedly connected to both sides of the rectangular block 1 through a connecting seat. A slider 106 is slidably connected to the outside of the sliding rod 105, and a second connecting rod 107 is hinged between the slider 106 and the first connecting rod 104 on the same side through a hinge. A spring 108 is also sleeved on the outside of the sliding rod 105, and both ends of the spring 108 are fixedly connected to the connecting seat and the slider 106 respectively.

[0048] In a preferred embodiment, the cleaning assembly only includes a group of connecting plates 101 arranged under the rectangular block 1. In this embodiment, the first connecting rod 104 and the second connecting rod 107 are set to be long enough, and the position where the upper end of the first connecting rod 104 is hinged to the rectangular block 1 is located on one side of the rectangular block 1 instead of the middle position. The length of the sliding rod 105 is the width of the entire rectangular block 1, ensuring that the entire section of the wire rope entering the rectangular block 1 can be cleaned only by two groups of clamping plates 102 under a group of connecting plates 101.

[0049] A moving groove is provided at the bottom of the connecting plate 101, and a two-way screw rod 1001 is rotatably connected inside the moving groove. Moving blocks 1002 are threadedly connected to the outside of both sides of the two-way screw rod 1001, and the moving blocks 1002 are fixedly connected to the clamping plates 102 on the same side. The two sets of moving blocks 1002 are driven to move toward or away from each other by rotating the two-way screw rod 1001, so that the two sets of clamping plates 102 can be driven to move toward or away from each other at the same time, so as to facilitate the use of wire ropes of different diameters. The clamping plates 102 are designed with an arc structure as a whole, and the two sets of clamping plates 102 can be spliced ​​into a complete circular ring, which is convenient for better fitting the elevator wire rope. The moving block 1002 is slidably connected to the moving groove, which can play a certain guiding role in the movement of the clamping plates 102.

[0050] The wiping cotton 103 is made of a highly absorbent and durable fabric, and in this embodiment is specifically a non-woven fabric with good softness and adsorption capacity, which can effectively remove dust, grease and other dirt.

[0051] In a preferred embodiment, a cleaning agent is provided on the wiping cotton 103, and the cleaning agent is a neutral solution or a degreasing agent.

[0052] In a preferred embodiment, the contact surface between the wiping cotton 103 and the steel wire rope is provided with a specific texture to improve friction and cleaning efficiency, and to help capture and remove fine particles and dirt during the wiping process.

[0053] In a preferred embodiment, the wiping cotton 103 is provided with an antistatic component to prevent static adsorption during the cleaning process, thereby preventing dust from reattaching.

[0054] The implementation principle of an elevator wire rope tension tester in the embodiment of the present application is as follows: first, two sets of clamping plates 102 on both sides are placed on both sides of the elevator wire rope at the same time, and then the bidirectional screw rod 1001 is rotated to drive the two sets of clamping plates 102 to approach the elevator wire rope so that the wiping cotton 103 contacts its surface, and then the rectangular block 1 is pushed to approach the elevator wire rope. At this time, the hinged effect between the connecting plate 101 and the rectangular block 1 and the first connecting rod 104, the sliding cooperation between the sliding rod 105 and the sliding block 106, the sliding block 106 and the first connecting rod 104 are utilized. The hinged connection between the first connecting rod 104 and the second connecting rod 107 causes the two groups of clamps 102 on both sides to move simultaneously outside the elevator wire rope toward the two ends of the wire rope. At this time, the wiping cotton 103 on the clamp 102 will wipe the surface of the wire rope, thereby achieving the purpose of cleaning the oil stains on the surface of the elevator wire rope, making it convenient to clean the wire rope. When the device squeezes the wire rope to produce displacement, the squeezed position is not easily sticky to the lubricating oil on the wire rope or the viscous substance after friction, thereby improving the accuracy of the detection result.

[0055] As the rectangular frame 1 continues to be pushed, the elevator wire rope will eventually enter the U-shaped groove, and then the blocking bar 6 is inserted into the bottom of the U-shaped groove by the sliding fit between the limit bar 601 and the limit groove 602 and fixed by the fixing bolts. Finally, the cylinder 3 is started to push the clamping block 2 towards the elevator wire rope and squeeze it to cause the wire rope to deform and bend. The pressure value can be detected by the detector 4, and the metal sensing of the wire rope by the displacement sensor 5 can detect the size of the wire rope between the vertical position and the bending position. By collecting the data of the two, the current tension of the wire rope can be calculated.

[0056] In addition, a further improvement is that mounting brackets are fixedly connected to both sides of the rectangular block 1 to facilitate fixing of the device.

[0057] In addition, the same or similar element symbols are used to refer to the same or similar parts or steps in the drawings and descriptions as much as possible. The drawings are presented in simplified form and are not drawn to exact scale. For convenience and clarity only, directional terms such as top, bottom, left, right, upward, above, above, below, below, behind, and in front may be used with respect to the drawings. These and similar directional terms should not be construed as limiting the scope of the present disclosure in any way.

Claims

1. An elevator wire rope tension detector, characterized in that: include: A detection assembly for detecting the tensioning force of an elevator steel wire rope; the detection assembly comprises a rectangular block (1), a U-shaped groove arranged on the rectangular block (1), a clamping block (2) arranged inside the U-shaped groove, a detector (4) fixedly connected to the bottom of the clamping block (2) and used for detecting the tensioning force, a retaining bar (6) for clamping the steel wire rope together with the clamping block (2), and a displacement assembly for moving the clamping block (2) toward the retaining bar (6); A cleaning assembly for cleaning an elevator wire rope; the cleaning assembly comprises a connecting plate (101) arranged below the rectangular block (1), two groups of clamping plates (102) are symmetrically arranged at the bottom of the connecting plate (101), and wiping cotton (103) for cleaning the wire rope is arranged on the opposite surfaces of the two groups of clamping plates (102), and a connecting rod assembly is arranged on the connecting plate (101) and used to guide the connecting plate (101) to move toward the side of the rectangular block (1); The connecting rod assembly comprises a first connecting rod (104) hingedly connected to the connecting plate (101) and the rectangular block (1) via a hinge, a sliding rod (105) arranged on the side of the rectangular block (1) via a connecting seat, a sliding block (106) slidably connected to the sliding rod (105), and a second connecting rod (107) hingedly connected to the sliding block (106) and the first connecting rod (104) via a hinge.

2. The elevator wire rope tension detector according to claim 1, characterized in that: The cleaning assembly further comprises a movable groove arranged at the bottom of the connecting plate (101), a bidirectional screw rod (1001) rotatably connected to the inside of the movable groove, and two groups of movable blocks (1002) threadedly connected to the bidirectional screw rod (1001); the two groups of movable blocks (1002) are respectively fixedly connected to the two groups of clamping plates (102).

3. The elevator wire rope tension detector according to claim 1, characterized in that: The displacement assembly is a cylinder (3) fixedly connected to the top of the rectangular block (1), and the telescopic end of the cylinder (3) is fixedly connected to the top of the clamping block (2).

4. The elevator wire rope tension detector according to claim 1, characterized in that: The slide bar (105) is also sleeved with a spring (108) for pushing up the slide block (106) inward.

5. The elevator wire rope tension detector according to claim 1, characterized in that: A mounting groove is provided on the inner wall of the U-shaped groove, and a displacement sensor (5) is fixedly connected inside the mounting groove.

6. The elevator wire rope tension detector according to claim 1, characterized in that: The side of the blocking bar (6) is fixedly connected to a limiting bar (601), the inner wall of the U-shaped groove is provided with a limiting groove (602), and the limiting groove (602) is slidably connected to the limiting bar (601).

7. The elevator wire rope tension detector according to claim 1, characterized in that: A mounting bracket is fixedly connected to the side of the rectangular block (1).

8. The elevator wire rope tension detector according to claim 1, characterized in that: The bottom of the clamping block (2) and the top of the blocking bar (6) are both provided with grooves with semicircular curved surface structures.

9. The elevator wire rope tension detector according to claim 1, characterized in that: The side surface of the clamping plate (102) is semicircular.

10. The elevator wire rope tension detector according to claim 4, characterized in that: Two ends of the spring (108) are fixedly connected to the connecting seat and the sliding block (106) respectively.

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