CN221370068U - Running accuracy detection device for guide wheel or diverting pulley of elevator - Google Patents
Running accuracy detection device for guide wheel or diverting pulley of elevator Download PDFInfo
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- CN221370068U CN221370068U CN202323518230.0U CN202323518230U CN221370068U CN 221370068 U CN221370068 U CN 221370068U CN 202323518230 U CN202323518230 U CN 202323518230U CN 221370068 U CN221370068 U CN 221370068U
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- diverting pulley
- guide wheel
- pressure sensor
- bearing
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- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 description 5
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to the technical field of elevators, in particular to an operation precision measuring device of a guide wheel or a diverting pulley of an elevator, which comprises the following components: the probe is abutted with the end face of a bearing for supporting the guide wheel or the diverting pulley; a pressure sensor connected with the probe for detecting the pressure change mediated by the probe and generated by the precision change of the guide wheel or the diverting pulley; and a housing for accommodating the probe and the pressure sensor. The running precision measuring device provided by the utility model can realize the accurate measurement of the running precision of the guide wheel or the diverting pulley, in particular the rotation precision.
Description
Technical Field
The utility model relates to the technical field of elevators, in particular to an operation precision measuring device for a guide wheel or a diverting pulley of an elevator.
Background
In the process of installation supervision inspection or regular inspection, the conventional vertical elevator can only rely on vision and hearing to inspect because related inspection rules and standards do not set detailed and accurate inspection methods for the operation precision of the guide wheel and the diverting pulley, namely, whether the guide wheel and the diverting pulley shake severely, lack oil, have abnormal sounds and the like is inspected by vision and hearing.
However, the sensory test is prone to false detection and missing detection, namely, the guide wheel and the diverting pulley with poor running precision are judged to be qualified by mistake, or the guide wheel and the diverting pulley with qualified running precision are judged to be unqualified by mistake. Meanwhile, the inspection method is not scientific and strict, and the actual running precision value of the guide wheel and the diverting pulley cannot be obtained. Moreover, as the judging standard is single, no corresponding qualification judging basis exists for elevators with different models and different specifications. In summary, existing detection methods have difficulty in accurately assessing the effectiveness of a bearing.
Disclosure of utility model
In order to overcome the defects in the prior art, the technical problems to be solved by the utility model are as follows: provided is an operation accuracy measuring device capable of accurately detecting and evaluating the operation accuracy of an elevator guide wheel or a diverting pulley.
In order to solve the technical problems, the utility model adopts the following technical scheme: an operation accuracy measuring device for a guide wheel or a diverting pulley of an elevator, comprising:
The probe is abutted with the end face of a bearing for supporting the guide wheel or the diverting pulley;
a pressure sensor connected with the probe for detecting the pressure change mediated by the probe and generated by the precision change of the guide wheel or the diverting pulley;
and a housing for accommodating the probe and the pressure sensor.
Wherein the housing has a through hole, at least a portion of the probe being located within the through hole.
And the probe is provided with a limiting piece, and the limiting piece is matched with the through hole to limit excessive axial movement of the probe.
The pressure sensor is characterized by further comprising a spring, wherein a guide piece is arranged on the probe, a pressure gasket is arranged on the pressure sensor, the guide piece is arranged in the spring, one end of the spring is connected with the limiting piece, and the other end of the spring is connected with the pressure gasket.
The device also comprises a base, a vertical guide rod and a horizontal guide rod;
The vertical guide rod is arranged on the base, one end of the horizontal guide rod is arranged on the axial direction of the vertical guide rod, and the shell is arranged on the axial direction of the horizontal guide rod.
Wherein, the base has the profile that cooperates with the pivot global that leading wheel or diverting pulley were installed.
Wherein the base has magnetism.
Wherein, be provided with the display on the casing, the display with pressure sensor links to each other.
The utility model has the beneficial effects that: the pressure change generated based on the running precision change of the guide wheel or the diverting pulley is detected through the cooperation of the probe and the pressure sensor, so that the revolving quality of the guide wheel or the diverting pulley is processed in a numerical mode, and the revolving quality is clear. Meanwhile, the revolving precision of the guide wheel or the diverting pulley can be rapidly measured based on the numerical data, and the scientific judgment on whether the guide wheel or the diverting pulley fails or not can be realized. The judgment mode can not cause false detection and missing detection, and effectively improves the detection precision. And the radial play value of the bearing can be indirectly calculated based on the numerical data.
Drawings
Fig. 1 is a view showing a tilting occurring when the running accuracy of a guide wheel or a diverting pulley is changed in an embodiment, in which the installed state of an unworn bearing is shown in a broken line and the tilting state of the bearing after wear is shown in a solid line;
FIG. 2 shows a side cross-sectional view of a housing and its internal components in an embodiment;
Fig. 3 is a schematic structural diagram of an operation accuracy detecting device according to an embodiment.
Description of the reference numerals: 1. a shaft pin; 2. a bearing; 21. an outer ring; 3. a diverting pulley; 4. a base; 5. a vertical guide bar; 6. a horizontal guide bar; 7. a mounting bracket; 8. a housing; 81. a through hole; 9. a probe; 10. a limiting piece; 11. a guide member; 12. a spring; 13. a gasket; 14. a pressure sensor.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
In this context, the running accuracy refers in particular to the accuracy of the turning of the steering wheel or diverting pulley. In this case, bearing wear is a major cause of deterioration of the rotation accuracy, because when the bearing wear occurs, the radial play thereof increases, and a certain inclination occurs when the guide wheel or the diverting pulley rotates, that is, an inclination angle α shown in fig. 1 is formed, and the increase in the value of the inclination angle α may directly indicate deterioration of the rotation accuracy of the guide wheel or the diverting pulley. The determination of the determination value of the rotation precision is mainly calculated according to the allowable maximum radial play value of the bearing and the axial circle runout of the outer ring end face of the whole set of bearing operation.
Specifically, the inventors devised an operation accuracy measuring device of a guide pulley or a diverting pulley of an elevator, as shown in fig. 2 and 3, which has: a probe 9 which is in contact with an end surface of the bearing 2 for receiving the guide wheel or the diverting pulley 3; a pressure sensor 14 connected to the probe 9 for detecting pressure changes mediated by the probe 9, which are caused by changes in accuracy of the guide wheel or diverting pulley 3; a housing 8 for accommodating the probe 9 and the pressure sensor 14.
In order to ensure that the probe 9 is held in contact with the end face, the probe 9 is preferably pressed against the end face of the bearing 2, preferably the end face of the outer ring 21 of the bearing 2, by a predetermined pressure value. When the accuracy of the turning of the guide wheel or diverting pulley 3 decreases, the inclination of the outer ring 21 causes the pressure value to change, thus allowing the pressure sensor 14 to detect the pressure value change mediated via the probe 9 to calculate the turning accuracy change of the guide wheel or diverting pulley 3. More specifically, when the guide wheel or diverting pulley 3 rotates, and the end face of the outer ring 21 of the bearing 2 is detected to jump, the probe 9 moves back and forth and generates a corresponding pressure value change, and is detected and collected by the pressure sensor 14. In one embodiment, when the pressure sensor 14 detects the pressure change, the Wheatstone bridge principle is combined, so that voltage change corresponding to the stress is generated, namely the pressure sensor 14 outputs an mV signal, then the mV signal passes through a signal amplifier 4-20 mA or 0-10V signal or is converted into an RS-232/RS485 signal, then the signal is transmitted to a controller and a display, and finally whether the rotation precision of the bearing (or called an elevator guide wheel or a diverting pulley) is qualified or not is directly determined by calculating and displaying the actual rotation precision of the bearing or comparing the actual rotation precision with the determined value.
Specifically, the determination value is input in advance into the controller. The determination value is determined by the flatness of the bearing outer ring, the allowable axial runout of the outer ring end face of the bearing from the reference, and the allowable maximum tilting amount of the bearing. The flatness of the outer ring of the bearing, the allowable axial runout of the outer ring end of the bearing against the reference can be obtained through a related technology file of the bearing, and the maximum tilting amount of the bearing can be obtained through a drawing method based on a related standard drawing graph of the bearing and the play range (obtained through the related technology file) of the bearing.
To obtain a linear signal, the probe 9 and the pressure sensor 14 are preferably connected by a spring 12. In one embodiment, the running accuracy measuring device further comprises a spring 12, a guide piece 11 is arranged on the probe 9, a pressure gasket 13 is arranged on the pressure sensor 14, the guide piece 11 is arranged in the spring 12, one end of the spring 12 is connected with the limiting piece 10, and the other end of the spring 12 is connected with the pressure gasket 13. Wherein the spring force of the spring 12 is linear and repeated within an allowable range, so that a linear spring force can be generated during the forward and backward linear movement of the probe 9, and a linear mV signal can be generated after passing through the pressure sensor 14. The spring gives a certain pre-pressure value between the probe and the end face of the outer ring of the bearing so as to keep the state of always keeping abutting between the probe and the end face of the outer ring of the bearing. The pre-pressure value is not limited herein, and theoretically it may cover the entire range of spring force. The pressure sensor is used for detecting pressure change which is mediated by the probe and is generated by the precision change of the guide wheel or the diverting pulley, and allows the compression amount of the spring to be obtained through calculation based on the pressure change, and when the measuring position of the pressure sensor is consistent with the measuring position of the axial circular runout of the outer ring end of the bearing facing the reference, the compression amount of the spring is the actual rotation precision value of the bearing or the diverting pulley or the guide wheel which is supported by the bearing. Therefore, it is preferable that the measurement position is located at an intermediate position of the bearing outer ring end face, that is, an intermediate position between the outer peripheral edge and the inner peripheral edge of the outer ring end face.
The measuring method of the running accuracy measuring device of the guide wheel or the diverting pulley of the elevator comprises the following steps:
S1, drawing a bearing graph according to a related technical file and related standards of a bearing (such as 6224-RS of a certain brand);
S2, based on the related art document, the bearing clearance range is 0.002-0.020 mm, the maximum radial clearance value (0.020 mm) is obtained, and the maximum inclination amount of the bearing end face measured by the maximum radial clearance value is 0.0223mm (the measurement height is the middle position of the outer ring end face, namely the middle position between the outer edge and the inner edge of the outer ring end face, see figure 1) which is measured by drawing a bearing graph based on the standard;
s3, determining a rotation precision determination value based on the following formula;
rotation accuracy determination value
Flatness of the outer ring measurement end face+allowable axial runout of the outer ring end face to reference +0.0223
The flatness of the measuring end surface of the outer ring and the allowable axial runout of the end surface of the outer ring relative to the reference can be obtained by the technical document;
S4, after the diverting pulley or the guide pulley rotates for one circle, reading a highest pressure value F max of the pressure sensor, and calculating a maximum compression amount x max of the spring according to the following formula, wherein the maximum compression amount x max is the actual inclination amount of the end face of the outer ring of the bearing;
Fmax＝kxmax
Wherein k is an elastic coefficient, which can be obtained through the technical document;
S5, at the moment, the measuring position of the pressure sensor is consistent with the axial circle runout measuring position of the end face of the outer ring of the bearing facing the reference, namely the actual inclination amount is the actual rotation precision value of the diverting pulley or the guide pulley;
s6, comparing the actual rotation precision value with the rotation precision judging value, wherein the larger value is the unqualified rotation precision, and the unqualified rotation precision is the qualified rotation precision.
In one embodiment, the housing 8 has a through hole 81, at least a portion of the probe 9 being located within the through hole 81. Wherein the through hole 81 is of a certain length, the through hole 81 should be matched with the circumferential surface of the probe 9 to guide the probe 9 in its axial movement.
In one embodiment, the probe 9 is provided with a stopper 10, and the stopper 10 cooperates with the through hole 81 to limit excessive axial movement of the probe 9. In a preferred embodiment, the maximum width of the limiting member 10 is greater than the maximum diameter of the through hole 81, so that the undesirable excessive movement of the probe 9 in the axial direction thereof can be limited by the limiting member 10.
In one embodiment, the running accuracy measuring device further comprises a base 4, a vertical guide rod 5 and a horizontal guide rod 6; the vertical guide rod 5 is mounted on the base 4, one end of the horizontal guide rod 6 is mounted on the axial direction of the vertical guide rod 5, and the housing 8 is mounted on the axial direction of the horizontal guide rod 6. Wherein the base 4 is preferably mounted on a shaft pin 1 mounting the guide wheel or diverting pulley 3. The housing 8 is mounted on a two-axis moving platform composed of the vertical guide bar 5 and the horizontal guide bar 6, so that the position of the housing 8, i.e., the position of the probe 9 can be adjusted according to the mounting requirement. In an alternative embodiment, the housing 8 is mounted to the horizontal guide bar 6 by means of a mounting bracket 7.
In one embodiment, the base 4 has a profile that mates with the circumference of the axle pin 1 to which the guide or diverting pulley 3 is mounted, i.e., the mounting of the base 4 on the axle pin 1 is accomplished by the profile on the base 4 mating with the circumference of the axle pin 1. Preferably, the base 4 has magnetic properties, i.e. the base 4 is magnetically coupled to the axle pin 1.
In one embodiment, in order to better observe the above-mentioned determination value manually, i.e. to facilitate a direct manual reading, a display is preferably provided on the housing 8, said display being connected to the pressure sensor 14.
Example 1
An operation accuracy measuring device for a guide wheel or a diverting pulley of an elevator, comprising:
a probe 9 which is abutted against an end surface of a bearing for receiving the guide wheel or the diverting pulley 3;
A pressure sensor 14 connected to the probe 9 for detecting pressure changes mediated by the probe 9, which are caused by changes in accuracy of the guide wheel or diverting pulley 3;
A housing 8 for accommodating the probe 9 and the pressure sensor 14; the housing 8 has a through hole 81, at least part of the probe 9 being located in the through hole 81; a limiting piece 10 is arranged on the probe 9, and the limiting piece 10 is matched with the through hole 81 to limit excessive axial movement of the probe 9;
The spring 12, be provided with the guide 11 on the probe 9, be provided with pressure pad 13 on the pressure sensor 14, the guide 11 sets up in the spring 12, the one end of spring 12 is connected spacing piece 10, the other end is connected pressure pad 13.
Example 2
The running precision measuring device of the guide wheel or the diverting pulley of the elevator further comprises a base 4, a vertical guide rod 5 and a horizontal guide rod 6 on the basis of the embodiment 1;
the vertical guide rod 5 is mounted on the base 4, one end of the horizontal guide rod 6 is mounted on the axial direction of the vertical guide rod 5, and the shell 8 is mounted on the axial direction of the horizontal guide rod 6;
the base 4 is provided with a molded surface matched with the peripheral surface of the shaft pin 1 on which the guide wheel or the diverting pulley 3 is arranged;
The base 4 has magnetism;
a display is provided on the housing 8, which display is connected to the pressure sensor 14.
Specifically, after the housing 8, the base 4, the horizontal guide rod 6 and the vertical guide rod 5 are mounted, the base 4 is mounted on the shaft pin 1, and at this time, the probe 9 is abutted against the end face of the outer ring 21 of the bearing 2 to which the guide wheel or the diverting pulley 3 and the shaft pin 1 are connected with a certain pressure value. When the rotation precision of the guide wheel or the diverting pulley 3 is reduced, the pressure value change mediated by the probe 9 is detected by the pressure sensor 14 through the spring 12, and the result of whether the rotation precision of the bearing (or the elevator guide wheel or the diverting pulley) is qualified is displayed on a display through calculation so as to be convenient for directly reading a meter to confirm whether the rotation precision of the guide wheel or the diverting pulley 3 is qualified.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (8)
1. An operation accuracy measuring device for a guide pulley or a diverting pulley of an elevator, comprising:
The probe is abutted with the end face of a bearing for supporting the guide wheel or the diverting pulley;
a pressure sensor connected with the probe for detecting the pressure change mediated by the probe and generated by the precision change of the guide wheel or the diverting pulley;
and a housing for accommodating the probe and the pressure sensor.
2. The running accuracy measurement device of claim 1, wherein the housing has a through-hole, at least a portion of the probe being located within the through-hole.
3. The running accuracy measurement device of claim 2, wherein the probe is provided with a stopper that cooperates with the through hole to limit excessive axial movement of the probe.
4. The running accuracy measuring device according to claim 3, further comprising a spring, wherein a guide member is provided on the probe, a pressure pad is provided on the pressure sensor, the guide member is provided in the spring, one end of the spring is connected to the limiting member, and the other end of the spring is connected to the pressure pad.
5. The running accuracy measuring apparatus according to claim 1, further comprising a base, a vertical guide bar, and a horizontal guide bar;
The vertical guide rod is arranged on the base, one end of the horizontal guide rod is arranged on the axial direction of the vertical guide rod, and the shell is arranged on the axial direction of the horizontal guide rod.
6. The running accuracy measuring apparatus according to claim 5, wherein the base has a profile that matches a peripheral surface of a shaft pin to which the guide wheel or the diverting pulley is mounted.
7. The running accuracy measurement device of claim 5, wherein the base has magnetism.
8. The running accuracy measurement device according to claim 1, wherein a display is provided on the housing, the display being connected to the pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323518230.0U CN221370068U (en) | 2023-12-21 | 2023-12-21 | Running accuracy detection device for guide wheel or diverting pulley of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323518230.0U CN221370068U (en) | 2023-12-21 | 2023-12-21 | Running accuracy detection device for guide wheel or diverting pulley of elevator |
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| Publication Number | Publication Date |
|---|---|
| CN221370068U true CN221370068U (en) | 2024-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202323518230.0U Active CN221370068U (en) | 2023-12-21 | 2023-12-21 | Running accuracy detection device for guide wheel or diverting pulley of elevator |
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| Country | Link |
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| CN (1) | CN221370068U (en) |
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- 2023-12-21 CN CN202323518230.0U patent/CN221370068U/en active Active
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