Radial stripping testing device and testing machine for elevator diversion sheave

Abstract

The utility model relates to a radial stripping test device and a radial stripping test machine for an elevator diversion sheave. The radial stripping test device comprises a base; the diversion sheave is arranged on the base and comprises a spoke part and a nylon part arranged on the spoke part in the circumferential direction, and the spoke part is detachably connected to the base; and the stripping mechanism is detachably arranged on the nylon part and is used for applying radial stripping force to the nylon part, so that the nylon part generates circumferential displacement relative to the spoke part. According to the utility model, the radial stripping test can be carried out at different temperatures, the test process is convenient to operate, the diversion sheave is convenient and stable to install, and the diversion sheave is not damaged when being stressed, so that the stripping test of the diversion sheave can be carried out more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator return pulley testing, in particular to a radial peeling testing device and a testing machine for an elevator return pulley. Background Art

[0002] The car return pulley, counterweight return pulley, and guide pulley used in elevators are key moving components. Failure directly impacts the elevator's performance, continued operation, and even safety. Elevator return pulleys are primarily classified into cast iron pulleys, nylon pulleys without steel sleeves, nylon pulleys with steel sleeves, and steel-spoke pulleys. Nylon pulleys are widely used in elevators due to their light weight, ease of installation, low price, noise absorption, and vibration reduction. Steel-spoke pulleys, which utilize extensible steel plates and seamless steel tubes as spokes and cast nylon for their outer ends and sheave grooves, also hold great promise for application. However, with the widespread use of elevator return pulleys, failures such as excessive wear, cracking of the return pulley, bearing damage and loss, and wheel displacement have become a frequent concern for the industry and users. Therefore, it is necessary to perform peel tests on nylon pulleys. Some radial peel tests rely on specialized tooling, which involves securing the wheel hub while machining the nylon portion of the pulley's outer end, inserting a support rod, and applying force to the rod. This method is complex and doesn't account for the impact of radial reaction forces on the pulley assembly. Therefore, developing a novel radial peel test device and testing machine for elevator deflector pulleys to accurately and efficiently evaluate the performance of nylon deflector pulleys is a pressing issue. Utility Model Content

[0003] In response to the problems existing in the prior art, the first purpose of the utility model is to provide a radial peeling test device for an elevator deflector pulley, comprising a base, a deflector pulley and a peeling mechanism, wherein a radial peeling force is applied to the nylon part of the deflector pulley through the peeling mechanism to test the peeling condition of the nylon part relative to the spoke part.

[0004] The second purpose of the present utility model is to provide a radial peel test machine for an elevator return rope pulley, which includes a radial peel test device, a test platform and a hydraulic pressure mechanism. The test process is easy to operate, the installation of the return rope pulley is convenient and stable, and the return rope pulley is not damaged when subjected to force, so that the peel test of the return rope pulley can be performed more accurately.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A radial peeling test device for an elevator deflector pulley comprises: a base; a deflector pulley, the deflector pulley being arranged on the base and comprising a spoke portion and a nylon portion circumferentially arranged on the spoke portion, wherein the spoke portion is detachably connected to the base; and a peeling mechanism, the peeling mechanism being detachably arranged on the nylon portion and being used to apply a radial peeling force to the nylon portion so as to cause the nylon portion to produce a circumferential displacement relative to the spoke portion.

[0007] Furthermore, the peeling mechanism includes a connecting plate located on one side of the nylon part and a force rod arranged on the outer edge of the connecting plate and extending radially. The end of the force rod serves as a force point. A first clip is provided on one side of the connecting plate, and a second clip is provided circumferentially on the outer edge of the nylon part to cooperate with the first clip.

[0008] Furthermore, the first clamping member includes a plurality of support rods circumferentially arranged at certain intervals on one side surface of the connecting plate, and the second clamping member includes a plurality of slots for clamping the support rods arranged at certain intervals along the outer edge of the nylon part, and a clamping block is formed between two adjacent slots.

[0009] Furthermore, the first clamping part includes an annular gear disk arranged on one side surface of the connecting plate, the annular gear disk has a hollow disk body, and a plurality of racks are circumferentially arranged on the inner wall of the disk body. The second clamping part includes an annular part arranged on the outer edge of the nylon part, the annular part has a plurality of tooth grooves arranged at certain intervals, and the racks are clamped together with the tooth grooves.

[0010] Furthermore, a universal pressure head is provided at the end of the force applying rod, and the universal pressure head includes an ear seat and a connecting shaft. The bottom of the ear seat abuts against the end of the force applying rod, and a pin is arranged on the ear seat. The lower part of the connecting shaft is movably connected to the ear seat through the pin, and the upper part of the connecting shaft is connected to the external power input member.

[0011] Furthermore, the spoke part includes a wheel body, a plurality of fixing holes are provided on the wheel body, the base includes a first support and a second support arranged opposite to each other, a plurality of connecting holes are provided on the first support, and the connecting holes are bolted to the fixing holes.

[0012] Furthermore, it also includes a connecting shaft, and the base, the return pulley and the stripping mechanism are connected in series through the connecting shaft.

[0013] A radial peeling test machine for an elevator return rope pulley comprises the radial peeling test device for an elevator return rope pulley.

[0014] Furthermore, the testing machine also includes a test platform and a hydraulic pressure mechanism. The radial peeling test device and the hydraulic pressure mechanism are both arranged on the test platform. The hydraulic pressure mechanism is connected to the upper part of the coupling of the universal pressure head and is used to provide alternating load or static load to the peeling mechanism.

[0015] Furthermore, the hydraulic pressure mechanism includes a support frame, which includes two columns arranged on the test platform and a crossbeam arranged between the two columns. A driver is configured on the crossbeam, and the driver includes a hydraulic cylinder and a hydraulic rod telescopically connected to the hydraulic cylinder, and one end of the hydraulic rod is connected to the upper part of the coupling.

[0016] The utility model has the following advantages:

[0017] 1. This utility model's radial peel test device for elevator return pulleys includes a base, a return pulley, and a peeling mechanism. The peeling mechanism applies a radial peeling force to the nylon portion of the return pulley to test the nylon's ability to peel relative to the spokes. Due to the structural characteristics of the nylon return pulley, radial peel tests can be performed at different temperatures. The test is convenient, the return pulley is easily and securely installed, and the force applied to the pulley does not damage it, enabling more accurate return pulley peel tests.

[0018] 2. This design, by securing the return pulley between the first and second supports, counteracts the reaction force exerted by the hydraulic pressure mechanism on the return pulley when the force is applied by the force rod. This effectively prevents external factors from influencing the test results, allowing for more accurate circumferential peel testing of the return pulley and improving test accuracy and reliability.

[0019] 3. This utility model utilizes a force-applying rod with a universal indenter at its end. The universal indenter utilizes a surface-contact design with the force-applying rod. This design not only improves the stability of the loading process but also ensures a more uniform force distribution throughout the test device, reducing test errors caused by localized stress concentration. The use of the universal indenter also enables the test device to adapt to loads from various directions and angles, further enhancing test flexibility and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the radial peeling test device for an elevator return rope pulley of the present invention.

[0021] Figure 2 It is a three-dimensional exploded view of the radial peeling test device for an elevator return rope pulley of the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the first support and the counter rope pulley of the utility model.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the anti-rope pulley and the stripping mechanism of the utility model.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the anti-rope pulley of the utility model.

[0025] Figure 6 It is a three-dimensional structural diagram of the peeling mechanism of the utility model.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the universal pressure head of the utility model.

[0027] Among them, 1 is the base, 101 is the first support, 101a is the first shaft hole, 101b is the first bearing, 101c is the connecting hole, 101d is the screw, 102 is the second support, 102a is the second shaft hole, 102b is the second bearing, 2 is the anti-ropes pulley, 201 is the spoke part, 201a is the wheel body, 201a1 is the fixing hole, 201a2 is the third shaft hole, 201a3 is the third bearing, 2 02 is the nylon part, 202a is the second clamping part, 202a1 is the clamping block, 202a2 is the clamping slot, 3 is the peeling mechanism, 301 is the connecting plate, 301a is the first clamping part, 301a1 is the support rod, 301b is the fourth shaft hole, 301c is the fourth bearing, 302 is the force rod, 303 is the universal pressure head, 303a is the ear seat, 303b is the connecting shaft, 303c is the pin shaft, and 4 is the connecting shaft. DETAILED DESCRIPTION

[0028] The following description is essentially only exemplary and is not intended to limit the present invention, its application, or use. It will be further understood that the terms "comprise" and / or "comprising" specify the existence of the features, wholes, steps, operations, elements and / or parts described when used in this specification, but do not exclude the existence of one or more other features, wholes, steps, operations, elements, parts and / or their groups or add one or more other features, wholes, steps, operations, elements, parts and / or their groups. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that when an element, component and / or part is referred to as "connected to another element, component and / or part", it can be directly connected to another element, component and / or part, or there can be an intermediate element. It will be understood that although the terms "first", "second" and the like can be used to describe various elements, components and / or parts in this article, these elements, components and / or parts should not be limited by these terms. These terms are only used to distinguish an element, component or part from another element, component or part. Therefore, the first element, component or part discussed below can be referred to as the second element, component or part without departing from the teachings of the present invention. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant field and / or the context of this specification, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0029] It should be understood that, in order to clearly show the contents therein, the drawings herein are not drawn to scale, and the same or similar reference numerals indicate the same or similar components or parts. In addition, it should be understood that any embodiments described in this application and the technical features included therein can be combined with each other.

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] like Figure 1 and Figure 2As shown, a radial peeling test device for an elevator deflector pulley generally includes a base 1, a deflector pulley 2 and a peeling mechanism 3. The base 1 includes a first support 101 and a second support 102 arranged opposite to each other. The space formed between the first support 101 and the second support 102 is used to accommodate the deflector pulley 2 and the peeling mechanism 3. The base 1, the deflector pulley 2 and the peeling mechanism 3 are connected in series through a connecting shaft 4. Among them, the first support 101 has a first axial hole 101a, and the interior of the first axial hole 101a is configured with a first bearing 101b for receiving the connecting shaft 4, and the second support 102 has a second axial hole 102a corresponding to the first axial hole 101a, and the interior of the second axial hole 102a is configured with a second bearing 102b for receiving the connecting shaft 4. The first support 101 and the second support 102 have similar structures, which include vertical plates and horizontal plates. The horizontal plates are horizontally arranged on the test platform, and the vertical plates are vertically arranged on the horizontal plates to form an inverted T-shaped structure. This structure enhances the overall rigidity of the base 1 and effectively improves the stability and accuracy of the anti-ropes 2 during the radial peeling test.

[0032] like Figure 1-6As shown, the deflecting pulley 2 is disposed on the base 1 and includes a spoke portion 201 and a nylon portion 202 circumferentially disposed around the spoke portion 201. The spoke portion 201 is detachably connected to the base 1. The spoke portion 201 includes a wheel body 201a having a third axial hole 201a2 in the center thereof. A third bearing 201a3 for receiving the connecting shaft 4 is disposed within the third axial hole 201a2. The third axial hole 201a2 is coaxially aligned with the first axial hole 101a and the second axial hole 102a in the base 1. The wheel body 201a is provided with a plurality of fixing holes 201a1, which are evenly distributed around the third axial hole 201a2 at regular intervals. The first support 101 is correspondingly provided with a plurality of connecting holes 101c, which are bolted to the fixing holes 201a1, thereby securing the deflecting pulley 2 to the base 1. In this embodiment, there are six fixing holes 201a1, corresponding to six connecting holes 101c. Six screws 101d are provided, each with a nut at one end and a threaded section at the other end for easy tightening with a nut. During installation, screw 101d is first passed through fixing hole 201a1 on wheel body 201a, then aligned with connecting hole 101c on first support 101 and exited. The nut is then abutted against one side of fixing hole 201a1 in wheel body 201a, while the other end of screw 101d is tightened with a nut. Through the tight fit between the nut and the nut, and the combined action of multiple fixing points, the deflecting pulley 2 is secured to the base 1, ensuring stability and safety during testing or operation. The nylon portion 202 includes an annular nylon sleeve having a hollow structure, an inner wall of which abuts against the outer side of the wheel body 201 a , and a plurality of wheel grooves for receiving the steel wire rope are provided on the outer side of the annular nylon sleeve.

[0033] like Figure 1-6As shown, the peeling mechanism 3 is detachably mounted on the nylon portion 202 and is used to apply a radial peeling force to the nylon portion 202, thereby causing the nylon portion 202 to circumferentially displace relative to the spoke portion 201. The peeling mechanism 3 includes a connecting plate 301 located on one side of the nylon portion 202 and a force application rod 302 disposed radially outside the connecting plate 301. The end of the force application rod 302 serves as a force application point. A first clamping member 301a is disposed on one side of the connecting plate 301. A second clamping member 202a is circumferentially disposed on the outer edge of the nylon portion 202, which cooperates with the first clamping member 301a. Among them, the connecting plate 301 is located between the second support 102 and the deflecting pulley 2. The shape of the connecting plate 301 is roughly the same as that of the deflecting pulley 2 and is parallel to it, ensuring precise alignment during installation and effectively dispersing the peeling force applied to the nylon part 202. The middle part of the connecting plate 301 has a fourth axial hole 301b, and the interior of the fourth axial hole 301b is provided with a fourth bearing 301c for receiving the connecting shaft 4. The fourth axial hole 301b is on the same central axis as the first axial hole 101a and the second axial hole 102a on the base 1 and the third axial hole 201a2 of the wheel body 201a. The above-mentioned first support 101, spoke part 201, connecting plate 301 and second support 102 are all connected in series through the connecting shaft 4, and the force rod 302 usually extends horizontally along the outer edge of the connecting plate 301 to a certain length.

[0034] In this embodiment, Figure 1-6 The first and second clamping members 301a and 202a are shown in one embodiment. The first clamping member 301a includes a plurality of rods 301a1 arranged circumferentially at regular intervals on a side surface of the connecting plate 301. The second clamping member 202a includes a plurality of slots 202a2 arranged at regular intervals along the outer edge of the nylon portion 202 for receiving the rods 301a1. A block 202a1 is formed between two adjacent slots. The size and shape of these slots 202a2 match the rods 301a1. The slots 202a2 can be shaped like semicircular grooves, rectangular grooves, or the like to ensure that the rods 301a1 can be smoothly inserted into and locked into the slots 202a2. The rods 301a1 can be inserted into and locked into the slots 202a2 of the second clamping member 202a, while being able to withstand various forces and stresses generated during the stripping process. This facilitates assembly and disassembly of the stripping mechanism 3. The number of support rods 301a1 and the number of clamping slots 202a2 can be adjusted according to actual needs to achieve a better clamping effect and ensure stability during the force application process.

[0035] In an embodiment not shown, the first clamping member 301a includes an annular toothed disk provided on one side of the connecting plate 301, the annular toothed disk having a hollow disk body, and a plurality of racks circumferentially provided on the inner wall of the disk body, these racks being arranged at specific angles and spacings, and the second clamping member 202a includes an annular member provided on the outer edge of the nylon portion 202, the annular member having a plurality of tooth grooves provided at certain intervals, the racks being clamped together with the tooth grooves, and the shape, depth and spacing of these tooth grooves are matched with the racks in the first clamping member 301a, so that the racks can be smoothly inserted and locked in the tooth grooves. Preferably, the number of racks is 24, and the corresponding number of tooth grooves is 24. The above are only some specific embodiments of the first clamping member and the second clamping member. It is understandable that other forms of clamping structures can be used, such as processing the outer edge of the nylon portion into a U-shaped groove, drilling, reaming, etc.

[0036] like Figure 1 、 2 As shown in Figures 6 and 7 , a universal pressure head 303 is provided at the end of the force application rod 302. The universal pressure head 303 includes an ear seat 303a and a coupling 303b. The bottom of the ear seat 303a abuts the end of the force application rod 302. A pin 303c is disposed on the ear seat 303a. The lower portion of the coupling 303b is movably connected to the ear seat 303a via the pin 303c, and the upper portion of the coupling 303b is connected to an external power input member. The coupling 303b has a clamping portion, the clamping end of which is movably connected to the pin 303c and positioned by a screw and nut. The clamping force can be adjusted according to the test force and direction. The clamping portion and the pin 303c form a cross bearing structure to achieve universal rotation. When the external power input component begins to apply a load, this force first acts on the coupling 303b. The coupling 303b transmits the force to the ear seat 303a via the pin 303c, and then transmits the force to the end of the force-applying rod 302 via the ear seat 303a. Ultimately, this force acts on the nylon portion 202 in the form of radial peeling, effectively peeling the nylon portion 202.

[0037] In an embodiment not shown, the first bearing 101b, the second bearing 102b, the third bearing 201a3 and the fourth bearing 301c are all rolling bearings, so that the connecting shaft 4 can rotatably connect the base 1, the anti-ropes 2 and the stripping mechanism 3 in series. The rolling bearing includes an inner ring, an outer ring, a plurality of rolling elements and a retaining frame. The inner ring is fixedly connected to the connecting shaft 4, and the outer ring is fixedly connected to the shaft hole. The outer surface of the inner ring is provided with an inner raceway, and the inner surface of the outer ring is correspondingly provided with an outer raceway. The inner raceway and the outer raceway together form a rolling channel. The plurality of rolling elements are mounted on the retaining frame at a certain interval to form series rolling elements, and the series rolling elements are slidably mounted in the rolling channel.

[0038] In an embodiment not shown, a radial peel test machine for an elevator return pulley includes the aforementioned radial peel test device for an elevator return pulley 2. The test machine also includes a test platform and a hydraulic pressure mechanism. Both the radial peel test device and the hydraulic pressure mechanism are disposed on the test platform. The hydraulic pressure mechanism is connected to the upper portion of the coupling 303b of the universal ram 303 and is used to provide an alternating load or a static load to the peeling mechanism 3. The hydraulic pressure mechanism includes a support frame comprising two columns disposed on the test platform and a crossbeam disposed between the two columns. The crossbeam is provided with a driver, comprising a hydraulic cylinder and a hydraulic rod retractably connected to the hydraulic cylinder. The hydraulic rod is detachably connected to the coupling 303b of the universal ram 303. One end of the hydraulic cylinder is connected to an external hydraulic system and control system to provide a set static load or alternating load to the hydraulic rod connected to the hydraulic cylinder. By locking the first and second clamping members 301a and 202a of the nylon portion 202 of the deflecting pulley 2 with the peeling mechanism 3, a torque is transmitted to the nylon portion 202 of the deflecting pulley 2 under test. At the same time, the spoke portion 201 of the deflecting pulley 2 under test is fixed to the base 1 via the screw 101d, so that the nylon portion 202 and the spoke portion 201 are circumferentially peeled off. During the test, a set force is applied by the hydraulic pressure mechanism at different ambient temperatures to observe the connection structure between the spoke portion 201 and the nylon portion 202. The force is continued to be applied to observe and record the circumferential force when the connection between the nylon portion 202 and the spoke portion 201 is significantly damaged. In particular, if the deflection of the deflecting pulley 2 is to be tested under different temperature environments, a temperature control box needs to be configured on the test platform. The temperature control box is equipped with a heating rod and a temperature sensor. The radial peeling test device is placed in the temperature control box to adjust the ambient temperature.

[0039] Based on the aforementioned radial peel test apparatus and machine, before use, the first support 101 and second support 102 of base 1 are fixed relative to each other on the test platform. Then, the spoke portion 201 of the deflecting pulley 2 is aligned with the connecting hole 101c of the first support 101 of base 1 through the fixing hole 201a1 therein and bolted together to ensure that the spoke portion 201 is securely mounted on base 1. One side of the connecting plate 301 is aligned with the outer edge of the nylon portion 202. A suitable snap-fit method is selected as needed, such as machining multiple clamping blocks 202a1 on the nylon portion 202 of the deflecting pulley 2 and configuring multiple support rods 301a1 on the connecting plate 301, which are then snapped into place in the slots 202a2 to lock. The connecting shaft 4 is passed through the base 1, deflecting pulley 2, and peeling mechanism 3 in sequence to ensure that all components are connected in series. The output end of the hydraulic pressure mechanism is connected to the upper portion of the coupling 303b of the universal pressure head 303.

[0040] During the test, the hydraulic pressure mechanism was activated to initiate loading, transmitting pressure to the force-applying rod 302 of the stripping mechanism 3. The output parameters of the hydraulic pressure mechanism were observed and recorded. During the loading process, after applying a circumferential torque of 1000 Nm, the connection between the spoke portion 201 and the nylon portion 202 was observed to be damaged. A set force was then applied under simulated conditions at different ambient temperatures, and the connection between the spoke portion 201 and the nylon portion 202 was observed to be damaged. The circumferential torque was continued until the connection between the spoke portion 201 and the nylon portion 202 began to deteriorate. The magnitude of the circumferential torque was recorded to test for radial stripping of the deflector pulley 2.

[0041] In summary, the present invention's radial peel test device for an elevator deflector pulley comprises a base, a deflector pulley, and a peeling mechanism. The peeling mechanism applies a radial peeling force to the nylon portion of the deflector pulley to test the deflection of the nylon portion relative to the spoke portion. Due to the structural characteristics of the nylon deflector pulley, radial peel tests can be performed at various temperatures. The test process is convenient, the deflector pulley is easily and securely installed, and the deflector pulley is not damaged when subjected to force, thereby enabling more accurate deflection test results. The deflector pulley is secured between a first support and a second support, thereby offsetting the reaction force generated by the hydraulic pressure mechanism on the deflector pulley when the force is applied by the force rod. This effectively prevents external factors from influencing the test results, allowing for more accurate circumferential deflection testing of the deflector pulley and improving test accuracy and reliability. The present invention utilizes a force rod with a universal pressure head at its end. The universal pressure head utilizes a surface-contact design between the force rod and the deflector pulley, which not only improves the stability of the loading process but also ensures more uniform force distribution throughout the test device, reducing test errors caused by localized stress concentrations. The application of the universal pressure head also enables the testing device to adapt to loads in various directions and angles, further improving the flexibility and adaptability of the test.

[0042] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A radial peeling test device for an elevator return pulley, characterized in that: include: base; a deflecting pulley, the deflecting pulley being arranged on the base, comprising a spoke portion and a nylon portion circumferentially arranged on the spoke portion, wherein the spoke portion is detachably connected to the base; a peeling mechanism, the peeling mechanism being detachably provided on the nylon portion and being used for applying a radial peeling force to the nylon portion so as to cause the nylon portion to be circumferentially displaced relative to the spoke portion; The peeling mechanism includes a connecting plate located on one side of the nylon portion and a force application rod arranged on the outer side of the connecting plate and extending radially, the end of the force application rod serving as a force application point, a first clamping piece provided on one side of the connecting plate, and a second clamping piece cooperating with the first clamping piece provided circumferentially on the outer edge of the nylon portion; A universal pressure head is provided at the end of the force application rod, and the universal pressure head includes an ear seat and a connecting shaft. The bottom of the ear seat abuts against the end of the force application rod, and a pin is arranged on the ear seat. The lower part of the connecting shaft is movably connected to the ear seat through the pin, and the upper part of the connecting shaft is connected to the external power input member.

2. A radial peeling test device for an elevator return pulley according to claim 1, characterized in that: The first clamping member includes a plurality of support rods circumferentially arranged at a certain interval on one side surface of the connecting plate, and the second clamping member includes a plurality of clamping grooves arranged at a certain interval along the outer edge of the nylon part for clamping the support rods, and a clamping block is formed between two adjacent clamping grooves.

3. A radial peeling test device for an elevator return pulley according to claim 1, characterized in that: The first clamping part includes an annular gear disk arranged on one side surface of the connecting plate, the annular gear disk has a hollow disk body, and a plurality of racks are circumferentially arranged on the inner wall of the disk body. The second clamping part includes an annular part arranged on the outer edge of the nylon part, the annular part has a plurality of tooth grooves arranged at certain intervals, and the racks are clamped together with the tooth grooves.

4. A radial peeling test device for an elevator return pulley according to claim 1, characterized in that: The spoke part includes a wheel body, which is provided with a plurality of fixing holes. The base includes a first support and a second support that are arranged opposite to each other. The first support is provided with a plurality of connecting holes, and the connecting holes are bolted to the fixing holes.

5. The radial peeling test device for an elevator return pulley according to claim 1, characterized in that: It also includes a connecting shaft, through which the base, the counter pulley and the stripping mechanism are connected in series.

6. A radial peeling test machine for an elevator return pulley, characterized in that: The invention comprises a radial peeling test device for an elevator return rope pulley according to any one of claims 1 to 5.

7. A radial peeling test machine for an elevator return pulley according to claim 6, characterized in that: The testing machine also includes a test platform and a hydraulic pressure mechanism. The radial peeling test device and the hydraulic pressure mechanism are both arranged on the test platform. The hydraulic pressure mechanism is connected to the upper part of the coupling of the universal pressure head and is used to provide alternating load or static load to the peeling mechanism.

8. A radial peeling test machine for an elevator return pulley according to claim 7, characterized in that: The hydraulic pressure mechanism includes a support frame, which includes two columns arranged on the test platform and a crossbeam arranged between the two columns. A driver is configured on the crossbeam, and the driver includes a hydraulic cylinder and a hydraulic rod telescopically connected to the hydraulic cylinder, and one end of the hydraulic rod is connected to the upper part of the coupling.

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