CN116718542A - Stair railing parameter testing device and detection method - Google Patents
Stair railing parameter testing device and detection method Download PDFInfo
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- CN116718542A CN116718542A CN202310989880.9A CN202310989880A CN116718542A CN 116718542 A CN116718542 A CN 116718542A CN 202310989880 A CN202310989880 A CN 202310989880A CN 116718542 A CN116718542 A CN 116718542A
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims description 36
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
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- 230000008569 process Effects 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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Abstract
The invention provides a stair railing parameter testing device and a stair railing parameter testing method, wherein the stair railing parameter testing device comprises a supporting module, a detecting module and a traction module used for dragging the detecting module to move relative to the supporting module, the supporting module comprises a counterweight plate, a connecting piece arranged below the counterweight plate, a supporting column fixed on the connecting piece and used for propping against the counterweight plate, a pressure sensor and a supporting arm, a limit groove is formed in one side of the counterweight plate, facing the connecting piece, of the counterweight plate in an inward sinking manner, the pressure sensor is arranged in the limit groove, the supporting column is propped against the pressure sensor and the connecting piece so as to enable the connecting piece and the counterweight plate to be arranged at intervals, and the supporting arm is propped between the counterweight plate and the guide rail and used for guiding the detecting module to move along the guide rail. The stair railing parameter testing device and the stair railing parameter testing method can realize the detection of the stair railing friction coefficient, and are simple in measurement, high in efficiency and accurate in measurement result.
Description
Technical Field
The invention relates to a stair railing parameter testing device and a stair railing parameter detecting method.
Background
With the frequent use of vertical traffic in cities and buildings and the increasing number of elderly people in society who need special care, mankind increasingly relies on stairs. As an integral part of stairs, the action of the handrail is less underestimated. Unfortunately, the lack of an ergonomic design of whether a handrail can be leaned against or effectively grasped is an important reason for the failure of many stair handrails to function properly. This disregarding of stair railing design will undoubtedly increase the danger of use of the stairs.
In the design of the handrail, even if the friction coefficient of the new stair handrail meets the requirement, whether the friction coefficient of the handrail can meet the requirement after a period of use or under the conditions of high humidity and the like is difficult to detect in the prior art.
In view of this, there is a need for improvements in the art to solve the above-described problems.
Disclosure of Invention
The invention aims to provide a stair railing parameter testing device which is used for solving the problem that the friction coefficient of the existing stair railing is difficult to detect.
In order to achieve the above-mentioned objective, the present invention provides a stair railing parameter testing device for detecting a friction coefficient of a stair railing, the stair railing parameter testing device includes a supporting module, a detecting module, and a traction module for dragging the detecting module to move relative to the supporting module, the supporting module includes a guide rail for being located at two sides of the stair railing, the detecting module includes a weight plate, a connecting piece disposed below the weight plate, a support column fixed on the connecting piece for propping against the weight plate, a pressure sensor, and a support arm, wherein a limit groove is formed in a side of the weight plate facing to the connecting piece in an inward recess manner, the pressure sensor is disposed in the limit groove, the support column props against the pressure sensor and the connecting piece to enable the connecting piece to be disposed at an interval with the weight plate, the support arm props against between the weight plate and the guide rail to guide the detecting module to move along the guide rail, and the traction module includes a traction piece for connecting with the detecting module to drive the detecting module to move, and a traction sensor for detecting a traction force of the traction piece.
As a further improvement of the invention, first displacement sensors for downward distance measurement are arranged on two sides of the weight plate, the first displacement sensors are used for detecting the displacement of the detection module along the height direction from different sides, and the angle of the first displacement sensors pointing to the ground is adjustable.
As a further improvement of the invention, the connecting piece comprises a hard plate arranged above and propped against the supporting column and a contact plate arranged below the hard plate, wherein the hard plate and the contact plate are tightly connected, no relative displacement is generated in the movement process, and the contact plate is made of a silica gel material.
As a further improvement of the present invention, the contact plate has a width direction larger than a width of an upper surface of the handrail with which it is in contact.
As a further improvement of the invention, the weight plate is provided with a second displacement sensor at a central position along the width direction of the handrail, and the second displacement sensor is used for detecting fluctuation of the upper surface of the stair handrail when the detection module moves along the extending direction of the stair handrail.
As a further improvement of the present invention, the number of the support columns and the pressure sensors is plural, wherein two pressure sensors are provided on the weight plate axis and are arranged at intervals in the front-rear direction.
As a further improvement of the present invention, four of the pressure sensors are distributed in a rectangular shape and are symmetrically arranged along the axis of the weight plate in the front-rear direction.
As a further improvement of the invention, the weight plate is also provided with an acceleration sensor and an angle sensor.
As a further improvement of the invention, the detection module further comprises telescopic sensor brackets which are arranged at two sides of the weight plate and extend downwards, and distance sensors which are arranged at the bottom of the sensor brackets and are arranged at two sides of the stair railing for detecting the distance of the stair railing.
As a further improvement of the invention, the detection module further comprises a roller arranged at the bottom of the supporting arm, the roller is slidably arranged relative to the supporting arm and the guide rail, and a roller pressure sensor is arranged at the contact position of the guide rail and the roller.
As a further development of the invention, the support arm is telescopically arranged in a direction perpendicular to the guide rail.
As a further development of the invention, the support module further comprises clamping elements for fixing the guide rail on both sides of the stair railing and anti-slip pads arranged between the clamping elements and the stair railing.
The invention also provides a stair railing parameter detection method, which comprises the following steps:
s1: providing a stair railing parameter testing device as described above;
s2: fixing the guide rail on two sides of the stair railing;
s3: supporting a supporting arm of the detection module on the guide rail, enabling the lower end of the connecting piece to be propped against the stair railing, enabling the contact surface to be extruded, enabling the pressure sensor to detect that the pressure perpendicular to the stair railing is N, and enabling the measuring value of the roller pressure sensor on the guide rail to be M;
s4: the traction piece is used for driving the detection module to move from rest to constant speed, the tension of the traction piece at the moment when the tension sensor measures the change of the detection module from rest to motion state is F1max, and the tension sensor measures the detection module to keep the tension of the traction piece moving at constant speed to be F1;
s5: the connecting piece of the detection module is integrally and fixedly arranged on the counterweight plate, the counterweight block on the counterweight plate is adjusted to ensure that the measured value of the roller pressure sensor on the guide rail is still M, the counterweight plate is not contacted with the surface of the handrail, the counterweight plate and the support arm are driven to move from rest to uniform speed by using the traction piece, the tension force of the traction piece at the moment when the tension force sensor measures the change of the detection module from rest to motion state is F2max, the tension force of the traction piece is kept to move at uniform speed by the tension force sensor measures the detection module, the maximum static friction coefficient mu 1= (F1 max-F2 max)/N of the stair handrail is calculated, and the dynamic friction coefficient is mu 2= (F1-F2)/N.
As a further improvement of the present invention, the stair railing parameter detecting method further includes step S6: in step S5, a first displacement sensor, a second displacement sensor and a distance sensor are started, the first displacement sensor selects one side of the stair step to measure, a vertical distance between the stair railing and the upper surface of the stair step is obtained, the second displacement sensor measures fluctuation of the upper surface of the stair railing, the distance sensor obtains distances D1 and D2 from the side edge of the stair railing, the distance between the distance sensors at the two sides is L, and the width w=l-D1-D2 of the stair railing is calculated.
The beneficial effects of the invention are as follows: the stair railing parameter testing device and the stair railing parameter testing method can easily realize the detection of the stair railing friction coefficient, and are simple in measurement, high in efficiency and accurate in measurement result.
Drawings
FIG. 1 is a schematic side elevational view of a stair railing parameter testing device of the present invention;
FIG. 2 is a schematic top view of a stair railing parameter testing device according to the present invention;
FIG. 3 is a schematic cross-sectional view of a stair railing parameter testing device of the present invention measuring a circular arc stair railing;
FIG. 4 is a schematic cross-sectional view of a stair railing parameter testing device of the present invention measuring a planar stair railing;
FIG. 5 is an enlarged schematic view of the area A in FIG. 3;
FIG. 6 is a schematic elevational view of the connector of the stair railing parameter testing device of the present invention;
FIG. 7 is a schematic bottom view of the connector of the stair railing parameter testing device of the present invention;
FIG. 8 is a schematic top view of a weight plate in one embodiment of a stair railing parameter testing device of the present invention;
FIG. 9 is a schematic top view of a weight plate in another embodiment of a stair railing parameter testing device of the present invention;
fig. 10 is a schematic top view of a weight plate in yet another embodiment of a stair railing parameter testing device of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 to 10, the present invention provides a stair railing parameter testing device 100 for detecting a friction coefficient of the stair railing 200.
As shown in fig. 1 to 2, the stair railing parameter testing device 100 includes a support module 1, a detection module 2, and a traction module 3 for drawing the detection module 2 to move relative to the support module 1.
The support module 1 comprises guide rails 11 positioned at two sides of the stair railing 200, clamping pieces 12 used for fixing the guide rails 11 at two sides of the stair railing 200, and anti-slip pads arranged between the clamping pieces 12 and the stair railing 200. In this embodiment, the guide rails 11 may be formed by splicing multiple sections, and two sides of each section of guide rail 11 are respectively provided with a positioning hole and a positioning column to realize plug-in fit with the adjacent guide rail 11. The guide rail 11 is provided with a plurality of laser positioning members, so that the guide rails 11 on two sides of the stair railing 200 are positioned at the same height and at the same inclination angle.
The clamping member 12 is a tightening knob to fix the rail 11 to the stair railing 200 through the rail 11.
The traction module 3 comprises a traction piece 31 which is connected with the detection module 2 and drives the detection module 2 to move, a tension sensor for detecting the traction force of the traction piece 31 and a pulling rope without elasticity.
As shown in fig. 3 to 5, the detection module 2 includes a weight plate 21, a connecting member 22 disposed below the weight plate 21, a support column 23 fixed on the connecting member 22 to be abutted against the weight plate 21, a pressure sensor 24, a support arm 25, a roller 26 disposed at the bottom of the support arm 25, telescopic sensor brackets 27 disposed at both sides of the weight plate 21 and extending downward, and a distance sensor 28 disposed at the bottom of the sensor brackets 27.
The supporting arm 25 is abutted between the weight plate 21 and the guide rail 11, and is used for guiding the detection module 2 to move along the guide rail 11, and the roller 26 is slidably arranged relative to the supporting arm 25 and the guide rail 11, so that a certain friction force can be reduced. The guide rail 11 serves to support the detection module 2.
A roller pressure sensor 111 is arranged at the contact position of the guide rail 11 and the roller 26, and can measure the pressure of the detection module 2 acting on the guide rail 11.
The supporting arm 25 is telescopically arranged in a direction perpendicular to the guide rail 11, so as to adjust the height of the weight plate 21 relative to the connecting piece 22.
The supporting arm 25 can be adjusted along the width direction of the handrail to meet the requirements of handrails with different widths.
The counter weight plate 21 can be provided with counter weights for adjusting the weight, and the counter weights with different weights can be replaced for adjusting the weight.
The weight plate 21 is provided with a limiting groove 211 in an inward concave manner towards one side of the connecting piece 22, and the pressure sensor 24 is arranged in the limiting groove 211.
The support column 23 abuts against the pressure sensor 24 and the connecting member 22 so that the connecting member 22 is spaced from the weight plate 21. Meanwhile, the supporting columns 23 are partially accommodated in the limiting grooves 211, so that the connecting piece 22 can be driven to move when the weight plate 21 moves.
The number of the support columns 23 and the number of the pressure sensors 24 are plural.
As shown in fig. 8, in one embodiment, the weight plate 21 has two pressure sensors 24, and the two pressure sensors 24 are disposed on the axis of the weight plate 21 and spaced apart in the front-rear direction. When the stair railing 200 is circular in shape, only the weight plate 21 having two pressure sensors 24 on the central axis needs to be provided.
In another embodiment, as shown in fig. 9, the weight plate 21 has four pressure sensors 24, and the four pressure sensors 24 are distributed in a rectangular shape and symmetrically arranged along the front-rear axis of the weight plate 21. When the upper surface of the stair railing 200 is a plane, only the weight plates 21 of the four pressure sensors 24 distributed in a rectangular shape are needed to be provided, so that a better detection effect is achieved.
In yet another embodiment, as shown in fig. 10, the weight plate 21 may have both pressure sensors 24 located on the axis and pressure sensors 24 distributed in a rectangular shape, and when facing different stair handrails 200, only the limit grooves 211 of the sensors at corresponding positions need to be supported by the support columns 23.
The weight plate 21 is further provided with an acceleration sensor 212 and an angle sensor 213, the acceleration sensor 212 measures the acceleration of the movement of the detection module 2, so as to judge the state change of the detection module 2 from static to uniform movement, and the angle sensor 213 measures the offset angle of the detection module 2.
The two sides of the weight plate 21 are provided with first displacement sensors 223 for measuring the distance downwards, the first displacement sensors 223 are used for detecting the displacement of the detection module 2 along the height direction from different sides, and the angle of the first displacement sensors 223 pointing to the ground can be adjusted so as to avoid the situation that the lower part of the first displacement sensors 223 is a non-stair surface.
As shown in fig. 6 to 7, the connecting member 22 includes a hard plate 221 disposed above and abutting against the support column 23, and a contact plate 222 disposed below the hard plate 221, wherein the contact plate 222 is made of a silica gel material to simulate the effect of pressing the stair railing 200 by a hand, so that the detection accuracy can be improved. The width direction of the contact plate 222 is slightly larger than the width of the upper surface of the armrest 200 contacted with the contact plate, and is consistent with the width of the palm of a hand along the length direction of the armrest 200, so as to improve the detection precision.
The width of the hard plate 221 is greater than the width of the contact plate 222, and the width of the contact plate 222 is greater than the width of the contact surface of the stair railing 200, so as to solve the problem of inaccurate detection results caused by different friction coefficients at different positions. In this embodiment, the hard plate 221 and the contact plate 222 are rectangular. In other embodiments, the contact plate 222 may be shaped to more closely resemble a palm or to match the curved stair railing 200.
The weight plate 21 is provided with a second displacement sensor 224 at a central position along the width direction of the handrail 200, and the second displacement sensor 224 is used for detecting the displacement of the detection module 2 perpendicular to the surface of the stair handrail 200 during the process of moving along the stair handrail 200, so as to determine whether the stair handrail 200 has a position with uneven height.
The distance sensors 28 are disposed on both sides of the stair railing 200 to detect the distance of the stair railing 200. The width of the stair railing 200 is the length between the two distance sensors 28 minus the detection value of the two distance sensors 28.
The method for detecting the parameters of the stair railing comprises the following steps:
s1: providing the stair railing parameter testing device 100;
s2: the guide rails 11 are fixed at two sides of the stair railing 200, so that the guide rails at two sides are at the same horizontal plane height and have the same inclination angle;
s3: supporting arm 25 of the detection module 2 is supported on the guide rail 11, so that the lower end of the connecting piece 22 is abutted against the stair railing 200, the contact surface is extruded, the pressure sensor 24 detects that the pressure vertical to the stair railing is N, and the measurement value of roller pressure sensor 111 on the guide rail is M;
s4: the traction module 3 is controlled to gradually increase the traction force, so that the traction member 31 drives the detection module 2 to gradually start moving from rest and keep low-speed uniform sliding, the pressure sensor 24 detects that the pressure perpendicular to the stair railing 200 is N, the tension sensor measures that the tension of the traction member 31 is F1max from rest to the moment of moving, and the tension sensor measures that the tension of the detection module 2 keeps that the tension of the traction member 31 moves at uniform speed to F1; in this step, the detection module 2 may move up or down along the stair railing 200, and may not affect the detection result, and may also detect two times, and the acceleration sensor 212 is used to determine whether the detection module 2 is stationary and moves at a constant speed;
s5: the connecting piece 22 and the supporting column 23 of the detection module 2 are integrally and fixedly arranged on the counterweight plate 21, the counterweight block on the counterweight plate 21 is adjusted to ensure that the measurement value of the roller pressure sensor 111 on the guide rail 11 is still M, the counterweight plate 21 is not contacted with the surface of the handrail, the counterweight plate 21 and the supporting arm 25 are driven to move from rest to uniform speed by using the traction piece 31, the tension force of the traction piece 31 is F2max at the moment when the detection module 2 moves from rest to motion, the tension force of the traction piece 31 is kept to uniform speed by the detection module 2, the maximum static friction coefficient mu 1= (F1 max-F2 max)/N of the stair handrail 200 is calculated, and the dynamic friction coefficient mu 2= (F1-F2)/N of the stair handrail 200 is calculated. Wherein F2max and F2 are the pulling forces required by the traction member 31 to drive the weight plate 21 and the support arm 25 to move from rest to uniform along the stair railing 200, and mainly balance the friction force between the rollers 26 and the guide rail 11, and N is the pressure of the weight plate 21 and the weight thereon perpendicular to the stair railing 200, so that the maximum static friction coefficient mu 1 and the dynamic friction coefficient mu 2 can be calculated;
s6: in step S5, the first displacement sensor 223, the second displacement sensor 224 and the distance sensor 28 are started, the first displacement sensor 223 selects one side of the stair step to measure, a vertical distance between the stair railing 200 and the upper surface of the step is obtained, the second displacement sensor 224 measures the fluctuation of the upper surface of the railing, the distance sensor 28 obtains distances D1 and D2 from the side of the railing 200, the distance between the distance sensors 28 at two sides is L, and the width w=l-D1-D2 of the stair railing is calculated.
The stair railing parameter testing device 100 and the method for detecting the same can easily realize the detection of the friction coefficient, the height and the flatness of the stair railing 200 and the width of the stair railing 200, and have the advantages of simple measurement, high efficiency and accurate measurement result.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (14)
1. A stair railing parameter testing device for detecting a friction coefficient of the stair railing, characterized in that: the stair railing parameter testing device comprises a supporting module, a detecting module and a traction module used for dragging the detecting module to move relative to the supporting module, wherein the supporting module comprises a guide rail used for being located on two sides of the stair railing, the detecting module comprises a counterweight plate, a connecting piece arranged below the counterweight plate, a supporting column fixed on the connecting piece and used for propping against the counterweight plate, a pressure sensor and a supporting arm, the counterweight plate faces one side of the connecting piece and is inwards sunken to be provided with a limit groove, the pressure sensor is arranged in the limit groove, the supporting column props against the pressure sensor and the connecting piece to enable the connecting piece to be arranged with the counterweight plate at intervals, the supporting arm props against between the counterweight plate and the guide rail to guide the detecting module to move along the guide rail, and the traction module comprises a traction piece used for being connected with the detecting module to drive the detecting module to move, and a tension sensor used for detecting traction force of the traction piece.
2. The stair railing parameter testing device according to claim 1, wherein: the two sides of the weight plate are provided with first displacement sensors for downward distance measurement, the first displacement sensors are used for detecting the displacement of the detection module along the height direction from different side edges, and the angle of the first displacement sensors, which points to the ground, can be adjusted.
3. The stair railing parameter testing device according to claim 1, wherein: the connecting piece is including setting up the top with the hard board that the support column supported, set up the contact plate of hard board below, hard board and contact plate closely connect, do not produce relative displacement in the motion process, the contact plate adopts silica gel material to make.
4. A stair railing parameter testing device according to claim 3, wherein: the contact plate has a width greater than the width of the upper surface of the handrail with which it is in contact.
5. A stair railing parameter testing device according to claim 3, wherein: the counterweight plate is provided with a second displacement sensor at the center along the width direction of the handrail, and the second displacement sensor is used for detecting the fluctuation change of the upper surface of the stair handrail when the detection module moves along the extending direction of the stair handrail.
6. A stair railing parameter testing device according to claim 3, wherein: the number of the supporting columns and the number of the pressure sensors are multiple, and two of the pressure sensors are arranged on the axis of the weight plate and are arranged at intervals along the front-back direction.
7. The stair railing parameter testing device according to claim 6, wherein: the four pressure sensors are distributed in a rectangular shape and are symmetrically arranged along the axis of the weight plate in the front-back direction.
8. The stair railing parameter testing device according to claim 2, wherein: and the weight plate is also provided with an acceleration sensor and an angle sensor.
9. The stair railing parameter testing device according to claim 1, wherein: the detection module further comprises telescopic sensor supports which are arranged on two sides of the counterweight plate and extend downwards, and distance sensors which are arranged at the bottoms of the sensor supports, wherein the distance sensors are arranged on two sides of the stair railing and used for detecting the distance between the stair railing.
10. The stair railing parameter testing device according to claim 1, wherein: the detection module further comprises a roller arranged at the bottom of the supporting arm, the roller is slidably arranged relative to the supporting arm and the guide rail, and a roller pressure sensor is arranged at the contact position of the roller and the guide rail.
11. The stair railing parameter testing device according to claim 1, wherein: the support arm is telescopically arranged along the direction perpendicular to the guide rail.
12. The stair railing parameter testing device according to claim 1, wherein: the support module further comprises clamping pieces used for fixing the guide rail on two sides of the stair railing and anti-slip pads arranged between the clamping pieces and the stair railing.
13. A stair railing parameter detection method is characterized in that: the detection module further comprises a roller arranged at the bottom of the supporting arm, the roller is slidably arranged relative to the supporting arm and the guide rail, a roller pressure sensor is arranged at the contact position of the roller and the guide rail, and the stair railing parameter detection method comprises the following steps:
s1: providing a stair railing parameter testing device according to any one of claims 1-12;
s2: fixing the guide rail on two sides of the stair railing;
s3: supporting a supporting arm of the detection module on the guide rail, enabling the lower end of the connecting piece to be propped against the stair railing, enabling the contact surface to be extruded, enabling the pressure sensor to detect that the pressure perpendicular to the stair railing is N, and enabling the measuring value of the roller pressure sensor on the guide rail to be M;
s4: the traction piece is used for driving the detection module to move from rest to constant speed, the tension of the traction piece at the moment when the tension sensor measures the change of the detection module from rest to motion state is F1max, and the tension sensor measures the detection module to keep the tension of the traction piece moving at constant speed to be F1;
s5: the connecting piece of the detection module is integrally and fixedly arranged on the counterweight plate, the counterweight block on the counterweight plate is adjusted to ensure that the measured value of the roller pressure sensor on the guide rail is still M, the counterweight plate is not contacted with the surface of the handrail, the counterweight plate and the support arm are driven to move from rest to uniform speed by using the traction piece, the tension force of the traction piece at the moment when the tension force sensor measures the change of the detection module from rest to motion state is F2max, the tension force of the traction piece is kept to move at uniform speed by the tension force sensor measures the detection module, the maximum static friction coefficient mu 1= (F1 max-F2 max)/N of the stair handrail is calculated, and the dynamic friction coefficient is mu 2= (F1-F2)/N.
14. The stair railing parameter detection method according to claim 13, wherein: the stair railing parameter detection method comprises the steps that first displacement sensors for downwards measuring distances are arranged on two sides of a counterweight plate, a second displacement sensor is arranged on the counterweight plate at the center position along the width direction of the stair railing, the detection module further comprises telescopic sensor supports which are arranged on two sides of the counterweight plate and downwards extend, and distance sensors which are arranged at the bottoms of the sensor supports, and the stair railing parameter detection method further comprises the following steps of S6: in step S5, a first displacement sensor, a second displacement sensor and a distance sensor are started, the first displacement sensor selects one side of the stair step to measure, a vertical distance between the stair railing and the upper surface of the stair step is obtained, the second displacement sensor measures fluctuation of the upper surface of the stair railing, the distance sensor obtains distances D1 and D2 from the side edge of the stair railing, the distance between the distance sensors at the two sides is L, and the width w=l-D1-D2 of the stair railing is calculated.
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| CN202310989880.9A CN116718542B (en) | 2023-08-08 | 2023-08-08 | Stair railing parameter testing device and detection method |
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| JP2010117233A (en) * | 2008-11-13 | 2010-05-27 | Kinugawa Rubber Ind Co Ltd | Friction testing device |
| CN102539314A (en) * | 2011-12-15 | 2012-07-04 | 长安大学 | Frictional factor test device |
| CN103175776A (en) * | 2013-03-14 | 2013-06-26 | 北京中路安交通科技有限公司 | Test system for aggregate friction coefficient of truck escape ramp |
| CN207866630U (en) * | 2018-02-28 | 2018-09-14 | 安吉县大志家具制造有限公司 | A kind of armrests determiner for compression strength |
| CN213181198U (en) * | 2020-10-12 | 2021-05-11 | 广东博智林机器人有限公司 | Friction coefficient testing device |
| CN113916675A (en) * | 2021-11-03 | 2022-01-11 | 广州特种机电设备检测研究院 | Automatic staircase handrail area lip intensity testing arrangement |
-
2023
- 2023-08-08 CN CN202310989880.9A patent/CN116718542B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010117233A (en) * | 2008-11-13 | 2010-05-27 | Kinugawa Rubber Ind Co Ltd | Friction testing device |
| CN102539314A (en) * | 2011-12-15 | 2012-07-04 | 长安大学 | Frictional factor test device |
| CN103175776A (en) * | 2013-03-14 | 2013-06-26 | 北京中路安交通科技有限公司 | Test system for aggregate friction coefficient of truck escape ramp |
| CN207866630U (en) * | 2018-02-28 | 2018-09-14 | 安吉县大志家具制造有限公司 | A kind of armrests determiner for compression strength |
| CN213181198U (en) * | 2020-10-12 | 2021-05-11 | 广东博智林机器人有限公司 | Friction coefficient testing device |
| CN113916675A (en) * | 2021-11-03 | 2022-01-11 | 广州特种机电设备检测研究院 | Automatic staircase handrail area lip intensity testing arrangement |
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