Tension measuring tool for steel wire rope of elevator

Abstract

The utility model belongs to the technical field of elevators, and discloses an elevator steel wire rope tension measuring tool which comprises a base, a lower sleeve arranged on the base, an upper rod body inserted into the lower sleeve, a displacement sensor arranged in the lower sleeve and used for detecting the moving distance of the lower end of the upper rod body, and a control unit. The measuring device has the advantages that in the measuring process, the motor drives the lead screw to rotate so as to drive the sliding base and the electronic tensiometer to move, labor is saved in the measuring process, and the displacement value of the upper rod body is monitored in real time through the displacement sensor in the measuring process; after the displacement value reaches the preset displacement value, the control unit controls the electronic tensiometer to automatically record the tension value, workers do not need to judge the horizontal pulling distance, and measurement is convenient and efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator technical field, especially a kind of elevator steel wire rope tension measuring tool. BACKGROUND

[0002] Elevator steel wire rope is used on the steel wire rope of elevator, and the tension uneven of steel wire rope can lead to elevator operation to shake, traction wheel wear, easily destroy traction and cause safety accident.GB / T10060-2011 "elevator installation acceptance specification" stipulates that "at least one automatic adjusting device should be set at the end of suspension steel wire rope or chain to balance the tension of each rope or chain, so that the deviation of the tension of any one rope or chain and the average value of the tension of the rope and chain is not more than 5%", based on this, in the process of elevator installation construction and subsequent maintenance, it is necessary to measure whether the tension of steel wire rope meets relevant regulations.

[0003] In practice, the tension detection method of elevator steel wire rope is mainly spring scale force measurement method, and the staff pulls each steel wire rope horizontally with ordinary spring scale, and uses scale to judge whether the pulling distance is consistent in measurement process, and the staff needs to control the horizontal pulling distance and tension simultaneously, measurement is complicated and inconvenient, and in addition, the tension degree of steel wire rope is larger when elevator car is measured at the top of shaft, and the staff pulls very hard. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of elevator steel wire rope tension measuring tool, with the effect of convenient and labor-saving measurement.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a kind of elevator steel wire rope tension measuring tool, including base, lower sleeve being located at the base, upper rod body being inserted in the lower sleeve, displacement sensor being located in the lower sleeve and detecting the moving distance of the lower end of the upper rod body, control unit, the upper end of the upper rod body is equipped with upper sleeve ring, the lower end of the lower sleeve is equipped with lower sleeve ring, the base is equipped with horizontal frame, sliding seat being slidably connected in the horizontal frame, screw rod being rotatably connected in the horizontal frame, nut assembly being installed in the screw rod, motor driving the rotation of the screw rod, the nut assembly is fixed with the sliding seat, the sliding seat is equipped with electronic tension meter, the electronic tension meter includes the hook for hooking the steel wire rope.

[0006] By adopting the technical scheme, the worker holds the base, tightly sleeves the upper sleeve ring and the lower sleeve ring on the elevator steel wire, and hooks the steel wire rope with the hook of the electronic tension meter, the upper sleeve ring and the elevator steel wire rope are in close fit, the lower sleeve ring and the elevator steel wire rope are in close fit, the horizontal frame is in a horizontal state, the upper rod body and the lower sleeve are in a vertical state. The control unit controls the motor to drive the screw rod to rotate, the screw rod drives the sliding seat to move horizontally through the nut assembly, the sliding seat drives the electronic tension meter to move horizontally, the electronic tension meter pulls the steel wire rope horizontally, and the displacement sensor detects the displacement value of the upper rod body to reach the preset displacement value, and the control unit controls the electronic tension meter to automatically record the tension value at the time point. According to the above scheme, the tension values of the steel wire ropes are measured, after all the steel wire ropes are measured, the average tension value is calculated, and whether the deviation of the tension values of the steel wire ropes from the average tension value is within the specified range is judged.

[0007] The utility model discloses further provide that: the upper sleeve ring with the upper rod body articulate.

[0008] The utility model discloses further provide that: the lower sleeve ring with the lower sleeve articulate.

[0009] The utility model discloses further provide that: the lower sleeve top is equipped with the top cap, the top cap has set up the through -hole, the upper rod body passes the through -hole.

[0010] The utility model discloses further provide that: the upper rod body is fixed with first magnet, the top cap is fixed with second magnet, the first magnet adsorbs at the second magnet.

[0011] By adopting the technical scheme, after the tension measurement of the steel wire rope is finished, the worker takes off the upper sleeve ring and the lower sleeve ring from the steel wire rope, and pulls the upper rod body upwards until the first magnet is adsorbed on the second magnet, and then the next steel wire rope can be measured. By setting in this way, the following effects are achieved: first, the position of the upper rod body after the measurement is reset and fixed. Secondly, the initial value of the electronic tension meter during the measurement process will be affected by the force of the first magnet and the second magnet, but after the first magnet and the second magnet are separated, the value measured by the electronic tension meter is the tension value of the steel wire rope, which will not be disturbed by other forces.

[0012] The utility model discloses further provide that: when the first magnet adsorbs at the second magnet, along vertical direction, the height difference between the upper sleeve ring and the electronic tension meter is equal to the height difference between the lower sleeve ring and the electronic tension meter.

[0013] The utility model discloses further provide that: the horizontal frame one side is equipped with the let -alone slot, the let -alone slot is used for the elevator steel wire rope to enter.

[0014] A further feature of this invention is that the horizontal support is provided with two slide rails, and the slide block is fixed with two sliders, which are slidably connected to the two slide rails respectively.

[0015] A further feature of this invention is that the motor is a brushless motor.

[0016] A further feature of this invention is that the base is equipped with a power supply, which powers the motor and the displacement sensor.

[0017] The beneficial effects of this utility model are as follows: During the measurement process, the motor drives the lead screw to rotate, thereby moving the slide and the electronic tension meter. This saves effort during the measurement process. During the measurement process, the displacement sensor monitors the displacement value of the upper rod in real time. After the displacement value reaches the preset displacement value, the control unit controls the electronic tension meter to automatically record the tension value. There is no need for the staff to manually determine the horizontal pulling distance, making the measurement convenient and efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional structural diagram of the lower sleeve and upper rod of this utility model.

[0020] In the diagram, 1. Base; 2. Lower sleeve; 21. Lower collar; 22. Top cover; 23. Second magnet; 3. Upper rod; 31. Upper collar; 32. First magnet; 4. Horizontal frame; 41. Slide rail; 42. Slider; 5. Slide seat; 6. Lead screw; 7. Motor; 8. Electronic tension meter; 9. Wire rope. Detailed Implementation

[0021] An elevator wire rope tension measuring tool, such as Figure 1 , Figure 2 As shown, the device includes a base 1, a lower sleeve 2 fixed to the base 1, and an upper rod 3 inserted into the lower sleeve 2. An upper collar 31 is hinged to the upper end of the upper rod 3, and the lower end of the lower sleeve 2 is also hinged to the upper collar 31. A displacement sensor is installed inside the lower sleeve 2 to detect the movement distance of the lower end of the upper rod 3. A top cover 22 is provided at the top of the lower sleeve 2, with a through hole through which the upper rod 3 passes. A first magnet 32 ​​is fixed to the upper rod 3, and a second magnet 23 is fixed to the top cover 22. The first magnet 32 ​​is attracted to the second magnet 23.

[0022] The base 1 is fixed with a horizontal frame 4, and the horizontal frame 4 is provided with a slot for the elevator wire rope 9. The horizontal frame 4 is fixed with two slide rails 41, and the slide rails 41 are slidably connected with slide blocks 42. The horizontal frame 4 is provided with a slide base 5, and the slide blocks 42 are fixed with the slide base 5. The horizontal frame 4 is rotatably connected with a lead screw 6, and the lead screw 6 is provided with a nut assembly fixed with the slide base 5. The horizontal frame 4 is provided with a motor 7, and the motor 7 is a brushless motor 7, and the output shaft of the motor 7 is connected with the lead screw 6 through a shaft coupling. The base 1 is provided with a power supply for supplying power to the motor 7 and a displacement sensor.

[0023] The slide base 5 is provided with an electronic tension meter 8 including a hook for hooking the wire rope 9. When the first magnet 32 is attracted to the second magnet 23, the height difference between the upper collar 31 and the electronic tension meter 8 is equal to the height difference between the lower collar 21 and the electronic tension meter 8 in the vertical direction. The electronic tension meter 8 and the displacement sensor are in communication connection with a control unit, and the motor 7 is controlled by the control unit.

[0024] The staff holds the base 1, and the upper collar 31 and the lower collar 21 are tightly sleeved on the elevator wire rope, and the hook of the electronic tension meter 8 is hooked on the wire rope 9. The upper collar 31 and the wire rope 9 are tightly fitted, and the lower collar 21 and the wire rope 9 are tightly fitted. At this time, the horizontal frame 4 is in a horizontal state, and the upper rod body 3 and the lower sleeve 2 are in a vertical state. The control unit controls the motor 7 to drive the lead screw 6 to rotate, and the lead screw 6 drives the slide base 5 to move horizontally through the nut assembly, and the slide base 5 drives the electronic tension meter 8 to move horizontally, and the electronic tension meter 8 pulls the wire rope 9 horizontally. When the displacement value of the upper rod body 3 detected by the displacement sensor reaches a preset displacement value, the control unit controls the electronic tension meter 8 to automatically record the tension value at the time point. According to the above scheme, the tension values of the wire ropes 9 are measured, and after all the wire ropes 9 are measured, the average tension value is calculated, and whether the deviation of the tension values of the wire ropes 9 from the average tension value is within a specified range is determined.

Claims

1. A tool for measuring the tension of elevator wire ropes, characterized in that: The system includes a base (1), a lower sleeve (2) disposed on the base (1), an upper rod (3) inserted into the lower sleeve (2), a displacement sensor and a control unit disposed in the lower sleeve (2) to detect the movement distance of the lower end of the upper rod (3), an upper collar (31) disposed at the upper end of the upper rod (3), a lower collar (21) disposed at the lower end of the lower sleeve (2), a horizontal frame (4) disposed on the base (1), a slide (5) slidably connected to the horizontal frame (4), a lead screw (6) rotatably connected to the horizontal frame (4), a nut assembly mounted on the lead screw (6), and a motor (7) for driving the lead screw (6) to rotate. The nut assembly is fixed to the slide (5), and an electronic tension meter (8) is disposed on the slide (5). The electronic tension meter (8) includes a hook for hooking the wire rope (9).

2. The elevator wire rope tension measuring tool according to claim 1, characterized in that: The upper collar (31) is hinged to the upper rod (3).

3. The elevator wire rope tension measuring tool according to claim 1 or 2, characterized in that: The lower collar (21) is hinged to the lower sleeve (2).

4. The elevator wire rope tension measuring tool according to claim 1, characterized in that: The lower sleeve (2) is provided with a top cover (22) at the top, and the top cover (22) has a through hole, through which the upper rod (3) passes.

5. The elevator wire rope tension measuring tool according to claim 4, characterized in that: The upper rod (3) is fixed with a first magnet (32), and the top cover (22) is fixed with a second magnet (23). The first magnet (32) is attracted to the second magnet (23).

6. The elevator wire rope tension measuring tool according to claim 5, characterized in that: When the first magnet (32) is attracted to the second magnet (23), the height difference between the upper collar (31) and the electronic tension meter (8) in the vertical direction is equal to the height difference between the lower collar (21) and the electronic tension meter (8).

7. The elevator wire rope tension measuring tool according to claim 1, characterized in that: The horizontal frame (4) has a clearance groove on one side, which is used for the elevator wire rope (9) to enter.

8. The elevator wire rope tension measuring tool according to claim 1, characterized in that: The horizontal frame (4) is provided with two slide rails (41), and the slide block (5) is fixed with two sliders (42). The two sliders (42) are slidably connected to the two slide rails (41) respectively.

9. The elevator wire rope tension measuring tool according to claim 1, characterized in that: The motor (7) is a brushless motor (7).

10. The elevator wire rope tension measuring tool according to claim 1, characterized in that: The base (1) is equipped with a power supply, which powers the motor (7) and the displacement sensor.

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