Device for measuring tension of steel wire rope of elevator

Abstract

The utility model is suitable for the technical field of elevator steel wire rope detection, and provides an elevator steel wire rope tension measuring device which comprises a mounting plate. The mounting frame is fixedly mounted on the mounting plate; the motor is fixedly mounted on the mounting frame; the winch is fixedly arranged on an output shaft of the motor in a sleeving manner; the pull rope is wound on the winch; the dynamometer is assembled on the pull rope and is used for measuring the tension of an elevator steel wire rope; the reference ruler is assembled on the mounting plate and is used for referring to the moving distance of the dynamometer; and the positioning mechanism is assembled on the mounting plate. The device for measuring the tension of the elevator steel wire rope can measure the tension of the elevator steel wire rope, in the measuring process, a worker does not need to pull the dynamometer, horizontal movement of the dynamometer is effectively guaranteed, and the overall accuracy of measuring the tension of the elevator steel wire rope is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator steel wire rope detection, and particularly relates to a measuring device for the tension of elevator steel wire ropes. Background Art

[0002] During the operation of an elevator, the car needs to be lifted and lowered by steel wire ropes. To ensure the safety of the elevator operation, it is necessary to regularly measure the tension of the elevator steel wire ropes.

[0003] Currently, when measuring the tension of elevator steel wire ropes, the measuring personnel need to stand on the top of the car, use a dynamometer to hook the elevator steel wire rope, pull the steel wire rope horizontally by about 10 to 15 centimeters along the horizontal direction with the dynamometer, and then record the value displayed on the dynamometer. This value is the current tension value of the steel wire rope.

[0004] However, currently, the dynamometer is manually pulled. During the manual pulling process, it is not possible to accurately stretch and pull the dynamometer in the horizontal direction, resulting in the inclination of the dynamometer, generating additional lateral forces, reducing the accuracy of measuring the tension of the elevator steel wire rope, and it is difficult to ensure that the same distance is pulled for different steel wire ropes during manual pulling. Content of the Utility Model

[0005] The utility model provides a measuring device for the tension of elevator steel wire ropes, aiming to solve the problem of low accuracy in currently manually using a dynamometer to measure the tension of elevator steel wire ropes.

[0006] The utility model is realized as follows. A measuring device for the tension of elevator steel wire ropes includes: a mounting plate; a mounting frame fixedly installed on the mounting plate; a motor fixedly installed on the mounting frame; a winch fixedly sleeved on the output shaft of the motor; a pulling rope wound around the winch; a dynamometer assembled on the pulling rope, which is used for measuring the tension of the elevator steel wire rope; a reference scale assembled on the mounting plate, which is used for referring to the moving distance of the dynamometer; a positioning mechanism assembled on the mounting plate, which is used for positioning the mounting plate on the top of the elevator car.

[0007] Preferably, the positioning mechanism includes: a placing frame fixedly installed on the mounting plate; a lead screw rotatably installed on the placing frame through a damping rotating shaft; two connecting blocks threadedly installed on the lead screw; and two clamping blocks respectively fixedly installed on the two connecting blocks.

[0008] Preferably, the lead screw is provided with threads with opposite ends, the two connecting blocks are respectively threadedly installed on the two opposite threads at both ends of the lead screw, and friction pads are provided on both clamping blocks.

[0009] Preferably, an adjusting mechanism is provided on the mounting plate and the reference ruler, and the adjusting mechanism is used to adjust the use position of the reference ruler. The adjusting mechanism includes: a screw rod fixedly installed on the mounting plate; an adjusting block slidably arranged on the screw rod, and the adjusting block is fixedly connected to the reference ruler; two adjusting nuts threadedly installed on the screw rod, and both of the adjusting nuts are in contact with the adjusting block.

[0010] Preferably, a limiting mechanism is provided on the reference ruler and the dynamometer, and the limiting mechanism is used to limit the placement position of the dynamometer. The limiting mechanism includes: a guide frame fixedly installed on the reference ruler; a guide block fixedly installed at the bottom of the dynamometer, and the guide block is slidably connected to the guide frame in a matching manner.

[0011] Preferably, a guiding mechanism for guiding the movement of the pulling rope is provided on the mounting frame. The guiding mechanism includes: a connecting frame fixedly installed on the outer wall of the mounting frame; a guide wheel rotatably installed on the connecting frame, and the guide wheel is in contact with the pulling rope in a matching manner, and the guide wheel is used to guide the movement of the pulling rope.

[0012] Preferably, an installation shell is fixedly installed on some outer walls of the mounting frame, and a storage battery is arranged inside the installation shell, and the storage battery is used to supply electric energy to the motor.

[0013] Preferably, an operating handle is fixedly installed on the top of the mounting frame, and the operating handle is used for the measuring personnel to carry and operate the whole device.

[0014] Compared with the related art, the elevator wire rope tension measuring device provided by the present invention has the following beneficial effects:

[0015] The whole device is installed on the top of the elevator car through the positioning mechanism, and then according to the position of the wire rope, the reference ruler is adjusted to be in contact with the wire rope. The winch is driven by the motor to rotate a certain amount, so as to wind up the pulling rope by a certain length, and then the dynamometer can be driven to move horizontally for a certain distance, and then the data on the dynamometer is recorded. This data is the tension of the elevator wire rope. During the whole measuring process, it is not necessary for the staff to manually pull and measure the dynamometer, which effectively ensures the horizontal movement of the dynamometer and improves the overall accuracy of measuring the tension of the elevator wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view structural schematic diagram of an elevator wire rope tension measuring device provided by the present invention;

[0017] Figure 2 is a front view sectional structural schematic diagram of the present invention;

[0018] Figure 3 is Figure 2 a schematic enlarged structural view of part A shown in

[0019] Figure 4 is Figure 2 a schematic enlarged structural view of part B shown in

[0020] Figure 5 is a three-dimensional structural view of the guide frame and the guide block in the present utility model.

[0021] Reference numerals: 1, mounting plate; 2, mounting frame; 3, motor; 4, winch; 5, pulling rope; 6, dynamometer; 7, reference scale; 8, placing rack; 9, clamping block; 10, lead screw; 11, connecting block; 12, screw rod; 13, adjusting block; 14, adjusting nut; 15, guide frame; 16, guide block; 17, connecting frame; 18, guide wheel; 19, mounting shell; 20, storage battery. Detailed implementation manners

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0023] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0024] An embodiment of the present utility model provides a device for measuring the tension of an elevator steel wire rope, as shown in Figures 1-5As shown in the figure, the measuring device for the tension of the elevator steel wire rope includes: a mounting plate 1; a mounting bracket 2 fixedly installed on the mounting plate 1; a motor 3 fixedly installed on the mounting bracket 2; a winch 4 fixedly sleeved on the output shaft of the motor 3; a pulling rope 5 wound around the winch 4; a dynamometer 6 assembled on the pulling rope 5, and the dynamometer 6 is used to measure the tension of the elevator steel wire rope; a reference scale 7 assembled on the mounting plate 1, and the reference scale 7 is used to reference the moving distance of the dynamometer 6; a positioning mechanism assembled on the mounting plate 1, and the positioning mechanism is used to position the mounting plate 1 on the top of the elevator car.

[0025] It should be noted that when manually using a dynamometer to measure the tension of the elevator steel wire rope, during the manual pulling process, it is not possible to accurately stretch the dynamometer horizontally, resulting in additional lateral forces on the dynamometer, thereby reducing the accuracy of measuring the tension of the elevator steel wire rope. Moreover, the manual pulling method is difficult to ensure that the same distance is pulled for different steel wire ropes during measurement.

[0026] In this embodiment, when the measurement personnel measure the tension of the elevator steel wire rope, first, the entire device is installed on the top of the elevator car through the positioning mechanism. Then, according to the position of the steel wire rope, the reference scale 7 is adjusted to contact the steel wire rope. Then, the hook on the dynamometer 6 is connected to the steel wire rope, and then the pulling rope 5 is connected to the dynamometer 6. Then, the motor 3 is started through the controller (a controller is provided on the mounting bracket 2) to wind the pulling rope 5 on the winch 4 for a certain length, and the pulling rope 5 is adjusted to a straightened state. After everything is ready, the motor 3 is started again through the controller to drive the winch 4 to rotate a certain amount, so as to wind the pulling rope 5 for a certain length, thereby driving the dynamometer 6 to move horizontally a certain distance along the steel wire rope. Then, the data on the dynamometer 6 is recorded, and this data is the tension of the elevator steel wire rope. During the entire measurement process, there is no need for the staff to manually pull and measure the dynamometer 6, effectively ensuring the horizontal movement of the dynamometer 6 and improving the overall accuracy of measuring the tension of the elevator steel wire rope. By repeating the above steps, the tension of other elevator steel wire ropes can be measured, and it is also convenient to move the same measurement distance for different steel wire ropes, thereby improving the accuracy of measuring the tension of the steel wire rope.

[0027] In a further preferred embodiment of the present utility model, the positioning mechanism includes: a placement rack 8 fixedly installed on the mounting plate 1; a lead screw 10 rotatably installed on the placement rack 8 through a damping rotating shaft; two connecting blocks 11 threadedly installed on the lead screw 10; and two clamping blocks 9 respectively fixedly installed on the two connecting blocks 11.

[0028] In this embodiment, when using the positioning mechanism, the placement rack 8 is placed at the corresponding position on the top of the elevator car, and then the lead screw 10 is rotated. A limiting rod is fixedly installed on the placement rack 8, and the limiting rod is slidably connected to the connecting block 11. The limiting rod limits the connecting block 11, so that the lead screw 10 drives the clamping blocks 9 on the two connecting blocks 11 to move relatively to clamp and fix the top of the elevator car, thereby fixing the whole on the top of the elevator car, and further facilitating the horizontal movement operation of the dynamometer 6, avoiding the situation of poor measurement accuracy caused by manual operation.

[0029] In a further preferred embodiment of the present invention, the lead screw 10 is provided with threads with opposite ends, and the two connecting blocks 11 are respectively threadedly installed on the two opposite threads of the lead screw 10. Friction pads are provided on both of the two clamping blocks 9.

[0030] In this embodiment, the friction pads can improve the stability of the connection between the clamping block 9 and the top of the elevator car.

[0031] In a further preferred embodiment of the present invention, an adjusting mechanism is provided on the mounting plate 1 and the reference scale 7. The adjusting mechanism is used to adjust the use position of the reference scale 7. The adjusting mechanism includes: a screw rod 12 fixedly installed on the mounting plate 1; an adjusting block 13 slidably arranged on the screw rod 12, and the adjusting block 13 is fixedly connected to the reference scale 7; two adjusting nuts 14 threadedly installed on the screw rod 12, and both of the two adjusting nuts 14 are in contact with the adjusting block 13.

[0032] In this embodiment, when it is necessary to adjust the use position of the reference scale 7, rotate the two adjusting nuts 14 to disengage from the contact with the adjusting block 13, and then move the position of the adjusting block 13 on the screw rod 12, so as to adjust the use position of the reference scale 7. When the end of the reference scale 7 is adjusted to correspond to the steel wire rope, rotate the two adjusting nuts 14 to contact the two sides of the adjusting block 13 again, so as to fix the reference scale 7 after the adjustment position, thereby facilitating the tension measurement operation of the steel wire rope of the elevator.

[0033] In a further preferred embodiment of the present invention, a limiting mechanism is provided on the reference scale 7 and the dynamometer 6. The limiting mechanism is used to limit the placement position of the dynamometer 6. The limiting mechanism includes: a guide frame 15 fixedly installed on the reference scale 7; a guide block 16 fixedly installed at the bottom of the dynamometer 6, and the guide block 16 is slidably connected to the guide frame 15 in a matching manner.

[0034] In this embodiment, through the mutual cooperation of the guide block 16 and the guide frame 15, it is convenient to horizontally connect the dynamometer 6 accurately with the steel wire rope, avoiding the situation that the dynamometer 6 is placed obliquely.

[0035] In a further preferred embodiment of the present utility model, a guiding mechanism for guiding the movement of the pulling rope 5 is provided on the mounting frame 2. The guiding mechanism includes: a connecting frame 17 fixedly installed on the outer wall of the mounting frame 2; a guide wheel 18 rotatably installed on the connecting frame 17. The guide wheel 18 is in adaptive contact with the pulling rope 5, and the guide wheel 18 is used to guide the movement of the pulling rope 5.

[0036] In this embodiment, the stability of the movement of the pulling rope 5 can be improved by the guide wheel 18.

[0037] In a further preferred embodiment of the present utility model, a mounting shell 19 is fixedly installed on some outer walls of the mounting frame 2. A storage battery 20 is arranged inside the mounting shell 19, and the storage battery 20 is used to supply electric energy to the motor 3.

[0038] In this embodiment, the storage battery 20 is used to supply electric energy to the motor 3.

[0039] In a further preferred embodiment of the present utility model, an operation handle is fixedly installed at the top of the mounting frame 2, and the operation handle is used for the measuring personnel to carry and operate the whole device.

[0040] In this embodiment, the operation handle is used for the measuring personnel to carry and operate the whole device.

[0041] To sum up, compared with the related art, the whole device is installed on the top of the elevator car through the positioning mechanism, and then according to the position of the steel wire rope, the reference scale 7 is adjusted to contact with the steel wire rope. The winch 4 is driven by the motor 3 to rotate a certain amount, so as to wind up the pulling rope 5 by a certain length. Furthermore, the dynamometer 6 can be driven to move horizontally by a certain distance, and then the data on the dynamometer 6 is recorded. This data is the tension of the elevator steel wire rope. During the whole measurement process, the staff does not need to manually pull and measure the dynamometer 6, which effectively ensures the horizontal movement of the dynamometer 6 and improves the accuracy of the overall measurement of the tension of the elevator steel wire rope.

[0042] It should be noted that the circuits, electronic components and modules involved in the present utility model are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve the improvement of software and methods.

[0043] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without making creative efforts, combine, add or delete the features in the embodiments of the present invention according to the situation or make other adjustments, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A device for measuring the tension of an elevator wire rope, characterized in that: include: Mounting plate (1); A mounting frame (2) fixedly mounted on the mounting plate (1); and a motor (3) fixedly mounted on the mounting frame (2); a winch (4) fixedly sleeved on the output shaft of the motor (3); and a pull rope (5) wound around the winch (4); a dynamometer (6) mounted on the pull rope (5), the dynamometer (6) being used to measure the tension of the elevator wire rope; a reference ruler (7) mounted on the mounting plate (1), the reference ruler (7) being used to reference the distance moved by the dynamometer (6); A positioning mechanism is mounted on the mounting plate (1), and the positioning mechanism is used to position the mounting plate (1) on the top of the elevator car.

2. The elevator wire rope tension measuring device according to claim 1, characterized in that: The positioning mechanism comprises: A placement rack (8) fixedly mounted on the mounting plate (1); Rotating a screw rod (10) mounted on the placement rack (8) via a damping shaft; Two connecting blocks (11) threadedly mounted on the screw rod (10); Two clamping blocks (9) are respectively fixedly mounted on the two connecting blocks (11).

3. The device for measuring the tension of an elevator rope according to claim 2, characterized in that: The screw rod (10) is provided with opposite threads at both ends, the two connecting blocks (11) are respectively threadedly mounted on the two opposite threads of the screw rod (10), and the two clamping blocks (9) are both provided with friction pads.

4. The elevator wire rope tension measuring device according to claim 1, characterized in that: The mounting plate (1) and the reference ruler (7) are provided with an adjustment mechanism, the adjustment mechanism being used to adjust the use position of the reference ruler (7), the adjustment mechanism comprising: A screw rod (12) fixedly mounted on the mounting plate (1); an adjusting block (13) slidably arranged on the screw rod (12), and the adjusting block (13) and the reference ruler (7) are fixedly connected; Two adjusting nuts (14) are threadedly mounted on the screw rod (12), and both of the adjusting nuts (14) are in conflict with the adjusting block (13).

5. The elevator wire rope tension measuring device according to claim 1, characterized in that: The reference ruler (7) and the dynamometer (6) are provided with a limiting mechanism, the limiting mechanism being used to limit the placement position of the dynamometer (6), the limiting mechanism comprising: A guide frame (15) fixedly mounted on the reference ruler (7); A guide block (16) is fixedly mounted on the bottom of the dynamometer (6), and the guide block (16) and the guide frame (15) are adapted to be slidably connected.

6. The device for measuring the tension of an elevator rope according to claim 1, characterized in that: The mounting frame (2) is provided with a guide mechanism for guiding the movement of the pull rope (5), and the guide mechanism comprises: A connecting frame (17) fixedly mounted on the outer wall of the mounting frame (2); A guide wheel (18) is rotatably mounted on the connecting frame (17), wherein the guide wheel (18) and the pull rope (5) are adapted to be in contact with each other, and the guide wheel (18) is used to guide the movement of the pull rope (5).

7. The device for measuring the tension of an elevator rope according to claim 1, characterized in that: A mounting shell (19) is fixedly mounted on some outer walls of the mounting frame (2), a storage battery (20) is arranged inside the mounting shell (19), and the storage battery (20) is used to provide electric energy to the motor (3).

8. The device for measuring the tension of an elevator rope according to claim 1, characterized in that: An operating handle is fixedly mounted on the top of the mounting frame (2), and the operating handle is used by the measurement personnel to carry and operate the entire device.

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