Test device for an elevator hoisting system

Abstract

The application discloses a test device of an elevator traction system, comprising: a traction motor; a traction sheave installed on an output shaft of the traction motor; a winding drum arranged directly below the traction motor; a traction rope wound around the winding drum and passing through the traction sheave, the traction sheave being driven by the traction motor to drive the traction rope to run and make the winding drum rotate to pay out the rope; and a damping application mechanism for providing a torque resisting the rotation of the winding drum in the direction of paying out the rope and capable of adjusting the torque.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator performance testing, and in particular to a test device for an elevator hoisting system. BACKGROUND

[0002] The hoisting system generally comprises a hoisting rope and a hoisting motor, and the hoisting system of the elevator is a core key component, which is related to the running effect, safety and service life of the elevator, and needs to be tested and tested.

[0003] In the prior art, the hoisting system is mainly tested in the following two ways:

[0004] The first way is to build the same running environment as the real elevator to obtain various data of the hoisting system running. Although this way can obtain real and accurate running data, the test occupies a large space, for example, a elevator shaft needs to be built, and the cost is also large.

[0005] The second way is to use springs and oil cylinders and other devices to apply load to the hoisting rope to simulate the car. This way occupies a small space and has a low cost, but the measured data is very different from the real running data, and the reason is at least that the springs and oil cylinders can basically only provide static load, and the uniform speed, acceleration, deceleration and braking state of the car are difficult to measure the influence of the hoisting rope and the hoisting motor. SUMMARY

[0006] In view of the above technical problems in the prior art, the embodiments of the present application provide a test device for an elevator hoisting system.

[0007] To solve the above technical problems, the technical scheme adopted by the embodiments of the present application is:

[0008] A test device for an elevator hoisting system, comprising:

[0009] a hoisting motor;

[0010] a hoisting wheel mounted on the output shaft of the hoisting motor;

[0011] a winding drum arranged directly below the hoisting motor;

[0012] a hoisting rope wound around the winding drum and passing through the hoisting wheel, the hoisting wheel being driven by the hoisting motor to drive the hoisting rope to run and make the winding drum rotate to pay out the hoisting rope;

[0013] a damping application mechanism for providing a torque to the winding drum against rotation in the pay-out direction and capable of adjusting the torque.

[0014] Preferably, the two ends of the winding drum are fixedly provided with a first rotating shaft and a second rotating shaft; the damping application mechanism acts on the first rotating shaft.

[0015] Preferably, the test device of the elevator traction system further comprises a braking mechanism, which acts on the second rotating shaft to provide braking for the winding drum.

[0016] Preferably, the damping application mechanism comprises:

[0017] a rotor fixedly sleeved on the first rotating shaft;

[0018] a stator sleeved outside the rotor;

[0019] an electromagnetic excitation component arranged between the rotor and the stator to enable the stator to provide a magnetic torque for the rotor.

[0020] Preferably, the braking mechanism comprises a fixed frame, an electromagnet arranged in the fixed frame, a permanent magnet arranged in the fixed frame, and a brake disc connected with the permanent magnet and facing the outer circumferential surface of the second rotating shaft, the brake disc being in close contact with the second rotating shaft to provide a braking force for the second rotating shaft by providing a magnetic force for the permanent magnet by the electromagnet.

[0021] Preferably, the winding drum is mounted on a support frame, the support frame being horizontally slidingly fitted with a sliding block and a sliding rail; a telescopic cylinder is arranged on the side of the support frame, and the telescopic cylinder is used to drive the support frame to slide so that the winding drum forms a horizontal swinging state.

[0022] Preferably, one side of the traction sheave is provided with an adjusting frame, the adjusting frame having an arc-shaped guide groove, the arc-shaped guide groove being concentric with the traction sheave.

[0023] A servo motor is arranged at the adjusting frame, and a recovery wheel is arranged on the servo motor, a distal end of the traction rope being connected to the recovery wheel, the servo motor being used to provide pre-tightening for the traction rope by driving the recovery wheel; the wrap angle of the traction rope to the traction sheave is adjusted by adjusting the position of the recovery wheel along the arc-shaped guide groove.

[0024] Preferably, the winding drum comprises a main body cylinder, a first stop ring and a second stop ring; the first stop ring is integrally formed with one end of the main body cylinder, the other end of the main body cylinder is formed with a connecting lug radially outward, and the connecting lug is connected with the second stop ring by a fastener; the second stop ring is separated from the main body cylinder by twisting and damaging the connecting lug.

[0025] Preferably, the braking mechanism comprises two symmetrical braking mechanisms.

[0026] Preferably, a bearing seat is arranged at each of the first rotating shaft and the second rotating shaft.

[0027] Compared with the prior art, the test device for the elevator traction system has the advantages that:

[0028] The test device uses the drum pay-off and the damping application mechanism and the brake mechanism to simulate the lifting of the car, so as to obtain various data when the traction system is running, and the test device occupies a small space and has low cost.

[0029] The summary of various implementations or examples of the technology described in the present application is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0030] In the drawings, which are not necessarily drawn to scale, like numerals can describe similar components in different views. Like numerals having different letter suffixes can represent different instances of the like components. The drawings illustrate generally, by way of example, various embodiments of the present application and are not intended to limit the present application in any way. The same or similar reference numerals in different drawings can represent the same or similar functionality. Such embodiments of the inventive subject matter can be employed without departing from the spirit of the application, described above, and the present application can include other modifications, as will occur to those skilled in the art. Such embodiments of the inventive subject matter can be employed without departing from the spirit of the application, described above, and the present application can include other modifications, as will occur to those skilled in the art. The drawings are mainly shown by way of example, rather than limitation, and are used in conjunction with the description and claims to explain embodiments of the application. Where appropriate, the same reference numbers are used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative rather than limiting, and are not intended to be exhaustive or exclusive.

[0031] Figure 1 The structural schematic diagram of the test device for the elevator traction system provided by the embodiments of the present application.

[0032] Figure 2 The A-direction view of Figure 1

[0033] Figure 3 The C-direction view of Figure 2

[0034] Figure 4 The D-direction view of Figure 2

[0035] Figure 5 The B-direction view of Figure 1

[0036] Reference numerals:

[0037] ​​​​10 - traction motor; 20 - traction sheave; 30 - traction rope; 40 - winding drum; 41 - main drum portion; 42 - first stop ring; 43 - second stop ring; 44 - connecting lug; 45 - support frame; 46 - telescopic cylinder; 471 - slider; 472 - slide rail; 51 - first rotating shaft; 52 - second rotating shaft; 53 - bearing seat; 60 - damping application mechanism; 61 - rotor; 62 - stator; 70 - braking mechanism; 71 - fixed frame; 72 - electromagnet; 73 - permanent magnet; 74 - brake disc; 75 - spring; 80 - adjusting frame; 81 - arc-shaped guide groove; 82 - recovery sheave; 83 - servo motor. DETAILED DESCRIPTION

[0038] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the ordinary meaning as understood by a person having ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms are used herein merely to distinguish one element from another, and are not intended to imply any order or sequence or importance. The terms "comprises", "comprising", "includes", "including" and the like are meant to be inclusive and not exclusive, and specify the presence of stated elements or integers but not to the exclusion of others. The terms "connected", "coupled", and the like, mean to be directly or indirectly connected or coupled, and can include wired or wireless connection or coupling. The terms "upper", "lower", "left", "right", and the like, are used to describe relative positions for ease of description and are not meant to be limiting.

[0039] In order to keep the following description of the embodiments of the present application clear and concise, detailed description of known functions and known components is omitted.

[0040] As shown in Figures 1 to 5 Embodiments of the present application disclose a test device for an elevator traction system, which comprises a traction motor 10, a traction sheave 20, a traction rope 30, a winding drum 40, an adjusting frame 80, a recovery sheave 82, a servo motor 83, a damping application mechanism 60, a braking mechanism 70, and a plurality of sensors.

[0041] As shown in Figure 1 The traction motor 10 is fixedly arranged, and the traction sheave 20 is arranged on an output shaft of the traction motor 10; the winding drum 40 is arranged directly below the traction sheave 20 without too large distance between the winding drum 40 and the traction sheave 20, and one end of the traction rope 30 is wound on the winding drum 40; as shown in Figure 1 and Figure 5As shown, the adjusting frame 80 is fixed at the side of the traction sheave 20, the adjusting frame 80 has an arc-shaped guide groove 81 which is concentric with the traction sheave 20, a servo motor 83 is arranged on the adjusting frame 80, a recovery sheave 82 is arranged on the output shaft of the servo motor 83, the recovery sheave 82 and the servo motor 83 can be adjusted in position along the arc-shaped guide groove 81, the other end of the traction rope 30 passes through the arc-shaped guide groove 81 and is wound on the recovery sheave 82, the servo motor 83 provides a certain rotating power for the recovery sheave 82, so that the recovery sheave 82 generates a certain tension on the traction rope 30, so that the traction rope 30 is wrapped on the traction sheave 20, by adjusting the position of the recovery sheave 82, the wrapping angle of the traction rope 30 on the traction sheave 20 can be adjusted.

[0042] As can be understood, the traction motor 10 drives the traction sheave 20 to rotate, so that the traction sheave 20 drives the traction rope 30 to run, and the drum 40 rotates to implement the pay-off.

[0043] As shown in Figure 2 , 3 , 4, the drum 40 specifically includes a main body cylinder portion 41, a first blocking ring 42 and a second blocking ring 43; the traction rope 30 is wound on the main body cylinder portion 41, the first blocking ring 42 is located at one end of the main body cylinder portion 41 and is integrally formed with the main body cylinder portion 41, the second blocking ring 43 is located at the other end of the main body cylinder portion 41, the end portion of the main body cylinder portion 41 is formed with a plurality of circumferentially arranged radial outwardly extending connecting lugs 44, the connecting lugs 44 are connected with the second blocking ring 43 through fasteners, when the drum 40 encounters an excessive impact load, the connecting lugs 44 will be torn and damaged, so that the second blocking ring 43 is separated from the main body cylinder portion 41.

[0044] The outer side of the first blocking ring 42 is provided with a first rotating shaft 51, the outer side of the second blocking ring 43 is provided with a second rotating shaft 52, the first rotating shaft 51 and the second rotating shaft 52 are coaxial with the drum 40; the first rotating shaft 51 and the second rotating shaft 52 are provided with a bearing seat 53, so as to support the drum 40 and enable the drum 40 to rotate.

[0045] The damping application mechanism 60 is arranged on the first rotating shaft 51 and is used to act on the first rotating shaft 51, specifically, the damping application mechanism 60 is used to provide a torsional force to the first rotating shaft 51, the direction of the torsional force is opposite to the direction of the rotation of the drum 40 during pay-off, that is, the damping application mechanism 60 is used to provide resistance for the pay-off of the drum 40, and the damping application mechanism 60 can adjust the provided torsional force, in this way, the drum 40 is loaded by the damping application mechanism 60, and the load is adjustable, so as to realize the adjustment of the traction sheave 20 and the load of the traction sheave 20, therefore, the drum 40 is equivalent to a car, the load applied by the damping application mechanism 60 is equivalent to the load applied by the car to the traction rope 30 and the traction sheave 20, and the pay-off process of the drum 40 is equivalent to the lifting process of the car.

[0046] The brake mechanism 70 is arranged at the second rotating shaft 52 and acts on the second rotating shaft 52. The brake mechanism 70 is used to quickly brake the second rotating shaft 52, so that the pay-off process of the winding drum 40 is immediately stopped. Therefore, the brake mechanism 70 is equivalent to the brake mechanism of the elevator car.

[0047] The damping application mechanism 60 specifically comprises a rotor 61, a stator 62 and an electromagnetic excitation component. The rotor 61 is fixedly sleeved on the first rotating shaft 51, the stator 62 is sleeved outside the rotor 61, and the electromagnetic excitation component comprises an iron core and an electromagnetic coil. The iron core is arranged on the rotor 61, and the electromagnetic coil is arranged on the inner wall of the stator 62. After the electromagnetic coil is energized, the stator 62 generates a torsional force on the rotor 61, thereby generating a torsional force on the winding drum 40. The torsional force applied to the winding drum 40 can be adjusted by adjusting the current flowing into the electromagnetic coil.

[0048] The brake mechanism 70 specifically comprises a fixed frame 71, an electromagnet 72 arranged in the fixed frame 71, a permanent magnet 73 arranged in the fixed frame 71, and a brake disc 74 connected with the permanent magnet 73 and facing the outer circumferential surface of the second rotating shaft 52. The brake disc 74 is in close contact with the second rotating shaft 52 to provide a braking force for the second rotating shaft 52 by the magnetic force provided by the electromagnet 72 for the permanent magnet 73, and the brake disc 74 is separated from the second rotating shaft 52 by the restoring force of the spring 75.

[0049] The winding drum 40, the damping application mechanism 60 and the brake mechanism 70 are arranged on the support frame 45, and the support frame 45 is in sliding cooperation with the test ground through the cooperation of the sliding block 471 and the sliding rail 472. The side of the support frame 45 is provided with the telescopic cylinder 46, which is used to drive the support frame 45 to slide to make the winding drum 40 form a horizontal swing state. In this way, the swing of the winding drum 40 driven by the telescopic cylinder 46 can simulate the swing of the elevator car during lifting.

[0050] Torque sensors are arranged on the traction motor 10, the first rotating shaft 51 and the second rotating shaft 52 to measure the torque. Displacement sensors are arranged on the winding drum 40 and the traction sheave 20 to measure the running displacement of the traction rope 30. Angle sensors are arranged on the winding drum 40 and the traction sheave 20 to measure the angular velocity (or rotational speed).

[0051] The working principle of the test device is described below.

[0052] The traction motor 10 drives the traction wheel 20 to rotate to drive the winding drum 40 to pay out the rope, the recovery wheel 82 re-winds the traction rope 30 by rotating, the damping application mechanism 60 applies a torque to the winding drum 40, and the winding drum 40 is loaded for the pay-out process, thereby simulating the hoisting process of the car, the load applied is adjusted by the damping application mechanism 60, thereby simulating the hoisting process of the car under different loads, the winding drum 40 is braked by the braking mechanism 70, thereby simulating the emergency braking of the car. The winding drum 40 is driven to swing by the telescopic cylinder 46, thereby simulating the swinging process of the car during the hoisting process.

[0053] In addition, the effect of the breakage of the connecting lug 44 at the second blocking ring 43 of the main drum part 41 of the winding drum 40 can be obtained by increasing the tension of the traction rope 30 by the traction wheel 20 and the rotation speed of the winding drum 40, and then suddenly braking the winding drum 40, thereby simulating the breakage of the traction rope 30.

[0054] The speed, torque and other parameters in the simulation process described above can be obtained by sensors.

[0055] The key advantage of the test device provided by the present application is at least:

[0056] The test device uses the pay-out of the winding drum 40 and the damping application mechanism 60 and the braking mechanism 70 to simulate the hoisting of the car, thereby obtaining various data during the operation of the traction system, and the test device occupies a small space and has a low cost.

[0057] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the present application.

Claims

1. A test device for an elevator hoisting system, characterized in that Comprise: traction motor; traction sheave mounted on the output shaft of the traction motor; drum disposed directly below the traction motor; traction rope wound around the drum and passing over the traction sheave, the traction sheave driven by the traction motor to drive the traction rope to run and rotate the drum to pay out; damping application mechanism for providing the drum with a torque resisting rotation in the pay-out direction and capable of adjusting the torque; both ends of the drum are fixedly provided with a first rotating shaft and a second rotating shaft; the damping application mechanism acts on the first rotating shaft; the test device of the elevator traction system further comprises a brake mechanism acting on the second rotating shaft to provide braking for the drum; the damping application mechanism: rotor fixedly sleeved on the first rotating shaft; stator sleeved outside the rotor; electromagnetic excitation component disposed between the rotor and the stator to enable the stator to provide a magnetic torque for the rotor; the brake mechanism includes a fixed frame, an electromagnet disposed in the fixed frame, a permanent magnet disposed in the fixed frame, and a brake disc connected with the permanent magnet and facing the outer peripheral surface of the second rotating shaft, the brake disc being in close contact with the second rotating shaft to provide a braking force for the second rotating shaft by the electromagnet providing a magnetic force for the permanent magnet; the drum is mounted on a support frame, the support frame being horizontally slidingly fitted with a slide block and a slide rail; the side of the support frame is provided with a telescopic cylinder for driving the support frame to slide to form a horizontal oscillation state of the drum.

2. The test device of an elevator hoisting system according to claim 1, characterized in that, One side of the traction sheave is provided with an adjusting frame having an arc-shaped guide groove concentric with the traction sheave; a servo motor is provided at the adjusting frame, a recovery wheel is mounted on the servo motor, the distal end of the traction rope is connected to the recovery wheel, the servo motor drives the recovery wheel to provide pretension for the traction rope; the position of the recovery wheel is adjusted along the arc-shaped guide groove to adjust the wrap angle of the traction rope on the traction sheave.

3. The test device of an elevator hoisting system according to claim 1, characterized in that, The drum comprises a main body cylinder, a first stop ring and a second stop ring; the first stop ring is integrally formed with one end of the main body cylinder, the other end of the main body cylinder is formed with a connecting lug radially outward, the connecting lug is connected with the second stop ring through a fastener; the second stop ring is separated from the main body cylinder by twisting and breaking the connecting lug.

4. The test device of an elevator hoisting system according to claim 1, characterized in that, The brake mechanism comprises two symmetrically arranged.

5. The test device of an elevator hoisting system according to claim 1, characterized in that, Both the first rotating shaft and the second rotating shaft are provided with a bearing seat.

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