CN116609105B - Ladder static load test method and device - Google Patents

Ladder static load test method and device Download PDF

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Publication number
CN116609105B
CN116609105B CN202310869230.0A CN202310869230A CN116609105B CN 116609105 B CN116609105 B CN 116609105B CN 202310869230 A CN202310869230 A CN 202310869230A CN 116609105 B CN116609105 B CN 116609105B
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China
Prior art keywords
ladder
pressure
sliding
main body
auxiliary
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CN202310869230.0A
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CN116609105A (en
Inventor
吴华
史文杰
叶勇伟
叶振青
周德凯
朱志华
吕新星
任凯
田成满
刘中川
范琦
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Solid Chain Testing Zhejiang Co ltd
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Solid Chain Testing Zhejiang Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Abstract

The application relates to the technical field of ladder static load test, in particular to a ladder static load test method and a ladder static load test device, wherein the ladder static load test method provided by the application comprises the following steps: one end of the ladder is placed on the test wall, and the other end of the ladder is placed on the sliding plate, wherein the sliding plate slides relative to the sliding rail. The anthropomorphic device is placed on the ladder and comprises a pressure main body and a pressure auxiliary hand, wherein the pressure main body is connected with the pressure auxiliary hand, and the pressure main body and the pressure auxiliary hand are matched to move so as to simulate the crawling action of a person on the ladder. Pressure data of each contact point of the anthropomorphic device when the ladder climbs and bending angle data of the ladder crosspiece are collected through the sensor. The walking state of a person on the ladder can be simulated through the anthropomorphic robot, and then the pressure born by the ladder and the bending variable of the cross rod when a user in a real environment climbs the ladder can be simulated. Various data of the ladder device in actual use are accurately detected.

Description

Ladder static load test method and device
Technical Field
The application relates to the technical field of ladder static load tests, in particular to a ladder static load test method and device.
Background
The ladder is the utensil of ascending a height of daily life term, because the ladder frequency of use is high, life requirement is long, the safety bearing performance support of ladder is related to user's personal safety, need carry out rail intensity test and connecting device intensity test to the ladder.
In the existing ladder test device, the test of the wood ladder and the bamboo ladder is only limited to directly and vertically applying pressure, the application environment and the use method of the wood ladder and the bamboo ladder are not considered, in general, the wood ladder and the bamboo ladder can be used in the environments of building houses, construction sites and the like of rural families, the wood ladder and the bamboo ladder are long in length generally, the wood ladder and the bamboo ladder need to be erected on walls with higher heights and the like, and the wood ladder and the bamboo ladder are different from the existing industrial ladder, two ends of the industrial ladder are supported, and only one side of the wood ladder and the bamboo ladder is supported on the ground, so that various data in the actual use environment of the wood ladder and the bamboo ladder cannot be tested in a mode of directly and vertically applying pressure.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a static load test method for a ladder, which simulates the use of a wood ladder and a bamboo ladder in a real use environment and improves the accuracy of detecting the use condition data of the wood ladder and the bamboo ladder.
The application provides a static load test method of a ladder, which comprises the following steps:
one end of the ladder is placed on the test wall, and the other end of the ladder is placed on the sliding plate, wherein the sliding plate slides relative to the sliding rail;
placing a anthropomorphic device on the ladder, wherein the anthropomorphic device comprises a pressure main body and a pressure auxiliary hand, the pressure main body is connected with the pressure auxiliary hand, and the pressure main body and the pressure auxiliary hand are matched for movement to simulate the crawling action of a person on the ladder;
pressure data of each contact point of the anthropomorphic device when the ladder climbs and bending angle data of the ladder crosspiece are collected through the sensor.
In the application provides a static load test method of a ladder, two pressure auxiliary hands are respectively connected to two sides of the ladder, and the crawling action of a person on the ladder is simulated by the cooperation of a pressure main body and the pressure auxiliary hands, wherein the crawling action comprises the following steps:
when the pressure main body crawls the ladder, the two pressure auxiliary hands alternately move for a preset distance.
In the application provides a ladder static load test method, the two pressure pairs alternately move for a preset distance, which comprises the following steps:
one of the pressure auxiliary hands moves 20-30cm from the original position, the other pressure auxiliary hand moves 40-60cm from the original position, and one of the pressure auxiliary hands moves 40-60cm again, wherein the distance between each crosspiece is equal to the distance between the two pressure auxiliary hands after moving, and the pressure of the pressure main body acts on the crosspiece.
The application also provides a ladder static load test device, which comprises:
a wall;
the sliding component is arranged perpendicular to the wall and extends along the wall surface direction of the wall;
a ladder, one end of which is connected with the wall, and the other end of which is connected with the sliding component, wherein the ladder can slide relative to the wall through the sliding component, and the ladder is used for a crosspiece for a user to stand;
and the anthropomorphic device is arranged on the ladder, can move on the ladder and is configured to simulate the crawling action of a person.
In the ladder static load test device provided by the application, the anthropomorphic device comprises:
a pressure body slidably coupled to the ladder and coupled to the rung, capable of applying pressure to the rung;
the pressure auxiliary hands are respectively arranged on two sides of the ladder and are connected with the pressure main body, and when the pressure main body slides, the pressure auxiliary hands on two sides can alternately move on the ladder.
In the static load test device for the ladder provided by the application, the pressure main body comprises a sliding main body, a main weight part and a hydraulic component, the sliding main body and the ladder are sleeved together, the main weight part is arranged on the sliding main body, the hydraulic component comprises a hydraulic cylinder and an abutting part, the hydraulic cylinder is arranged on the sliding main body and inclines to be in contact with the sliding main body, a driving rod of the hydraulic cylinder penetrates into the sliding main body, and the abutting part is connected with a driving end of the hydraulic cylinder and is used for abutting against a cross rod.
In the static load test device for the ladder, the pressure auxiliary comprises a sliding auxiliary body, an auxiliary weight piece and a push rod device, wherein the push rod device is arranged on the side surface of the pressure main body, a driving rod of the push rod device is connected with the sliding auxiliary body, and the auxiliary weight piece is arranged on the sliding auxiliary body.
In the ladder static load test device provided by the application, the pressure body is further provided with a power device, and the power device is configured to drive the pressure body to move.
In the ladder static load test device provided by the application, the sliding assembly comprises a sliding rail, a sliding plate and a screw rod, wherein the sliding plate is in sliding connection with the sliding rail, and the screw rod is arranged in the sliding plate in a penetrating way.
In the static load test device for the ladder, the arc-shaped groove is formed in the sliding plate, the arc-shaped rail is arranged on one side, opposite to the wall, of the arc-shaped groove, the arc-shaped rail corresponds to the arc-shaped groove, the positioning plate is connected to the arc-shaped rail in a sliding mode, the bolt penetrates through the positioning plate, and the positioning plate is connected with the ladder.
In view of the above-mentioned, it is desirable,
the application provides a static load test method of a ladder, which comprises the following steps: one end of the ladder is placed on the test wall, and the other end of the ladder is placed on the sliding plate, wherein the sliding plate slides relative to the sliding rail. The anthropomorphic device is placed on the ladder and comprises a pressure main body and a pressure auxiliary hand, wherein the pressure main body is connected with the pressure auxiliary hand, and the pressure main body and the pressure auxiliary hand are matched to move so as to simulate the crawling action of a person on the ladder. Pressure data of each contact point of the anthropomorphic device when the ladder climbs and bending angle data of the ladder crosspiece are collected through the sensor.
Through the steps, the walking state of a person on the ladder can be simulated through the anthropomorphic robot, and then the pressure born by the ladder and the bending variable of the cross rod when a user in a real environment crawls the ladder can be simulated. Various data of the ladder device in actual use are accurately detected.
The application also provides a ladder static load test device, which comprises: the wall, slip subassembly, ladder, anthropomorphic device, slip subassembly with the wall sets up perpendicularly, and follows wall face direction extends. One end of the ladder is connected with the wall, the other end of the ladder is connected with the sliding assembly, the ladder can slide relative to the wall through the sliding assembly, and the ladder is used for a crosspiece for a user to stand. The anthropomorphic implement is disposed on the ladder, is movable on the ladder, and is configured to simulate a crawling action of a person.
The pressure and the bending variable of the cross rod of the ladder when a user in a real environment crawls the ladder can be simulated by controlling the anthropomorphic device to move on the ladder to simulate the behavior of a person. Various data of the ladder device in actual use are accurately detected. The sliding assembly may enable the ladder to move relative to the wall such that the included angle of the ladder with the wall may vary.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a ladder static load test device according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a ladder static load test device anthropomorphic apparatus provided by an embodiment of the application;
FIG. 3 is a schematic diagram of a slide plate structure of a ladder static load test device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a hydraulic component of a ladder static load test device according to an embodiment of the present application.
Reference numerals:
10. a wall;
20. a sliding assembly; 201. a slide rail; 202. a slide plate; 203. an arc-shaped groove; 204. an arc-shaped rail; 205. and (5) positioning the plate.
30. A ladder;
40. a anthropomorphic device; 401. a pressure body; 4011. a sliding body; 4012. a main weight member;
4013. a hydraulic assembly; 4014. a hydraulic cylinder; 4015. an abutment;
402. a pressure auxiliary; 4021. a sliding auxiliary body; 4022. a secondary weight member; 4023. a push rod device.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
It is to be understood that the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish identical items or similar items having substantially the same function and effect. For example, the first groove and the second groove are merely for distinguishing between different grooves, and are not limited in order. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
The ladder is the utensil of ascending a height of daily life term, because the ladder frequency of use is high, life requirement is long, the safety bearing performance support of ladder is related to user's personal safety, need carry out rail intensity test and connecting device intensity test to the ladder.
In the existing ladder test device, the test of the wood ladder and the bamboo ladder is only limited to directly and vertically applying pressure, the application environment and the use method of the wood ladder and the bamboo ladder are not considered, in general, the wood ladder and the bamboo ladder can be used in the environments of building houses, construction sites and the like of rural families, the wood ladder and the bamboo ladder are long in length generally, the wood ladder and the bamboo ladder need to be erected on walls with higher heights and the like, and the wood ladder and the bamboo ladder are different from the existing industrial ladder, two ends of the wood ladder and the bamboo ladder are supported on the ground, so that the mode of directly and vertically applying pressure cannot test various data under the actual use environment of the wood ladder and the bamboo ladder.
Description of the terminology: the ladder 30 includes a bamboo ladder and a wood ladder.
In order to solve the above technical problems, the present application provides a static load test method for a ladder 30, comprising: one end of the ladder 30 is placed on the test wall 10 and the other end is placed on the slide plate 202, wherein the slide plate 202 slides relative to the slide rail 201. The anthropomorphic device 40 is placed on the ladder 30, the anthropomorphic device 40 comprises a pressure main body 401 and a pressure auxiliary hand 402, the pressure main body 401 is connected with the pressure auxiliary hand 402, and the pressure main body 401 and the pressure auxiliary hand 402 are matched to move so as to simulate the crawling action of a person on the ladder 30. Pressure data of each contact point of the anthropomorphic device 40 when the ladder 30 climbs and bending angle data of the crosspiece of the ladder 30 are acquired through sensors. Through the above steps, the walking state of a person on the ladder 30 can be simulated through the anthropomorphic robot 40, and then the pressure and the transverse rod bending variable applied to the ladder 30 when a user in a real environment crawls the ladder 30 can be simulated. Various data of the ladder 30 device at the time of actual use is accurately detected.
Referring to fig. 1-4, the present application provides a method for testing a static load of a ladder 30, comprising:
placing one end of the ladder 30 on the test wall 10 and the other end on the slide plate 202, wherein the slide plate 202 slides relative to the slide rail 201;
placing a anthropomorphic device 40 on the ladder 30, wherein the anthropomorphic device 40 comprises a pressure main body 401 and a pressure auxiliary hand 402, the pressure main body 401 is connected with the pressure auxiliary hand 402, and the pressure main body 401 and the pressure auxiliary hand 402 are matched to move so as to simulate the crawling action of a person on the ladder 30;
pressure data of each contact point of the anthropomorphic device 40 when the ladder 30 climbs and bending angle data of the crosspiece of the ladder 30 are acquired through sensors.
The walking state of a person on the ladder 30 can be simulated by the anthropomorphic device 40, and then the pressure and the transverse rod bending variable applied to the ladder 30 when a user in a real environment crawls the ladder 30 can be simulated. Various data of the ladder 30 device at the time of actual use is accurately detected.
In some embodiments, the pressure auxiliary hand 402 comprises two pressure auxiliary hands respectively connected on two sides of the ladder 30, and the movement of the pressure main body 401 and the pressure auxiliary hand 402 in cooperation with each other simulates the crawling action of a person on the ladder 30 comprises the following steps:
the pressure body 401 alternately moves the two pressure pairs 402 by a preset distance while the ladder 30 climbs.
When the ladder 30 is climbed, the pressure main body 401 alternately moves the two pressure auxiliary hands 402 for a preset distance, and the action that the two hands are alternately used when the ladder 30 is climbed can be realized.
In the method for testing the static load of the ladder 30 provided by the application, the two pressure pairs 402 alternately move for a preset distance comprises:
one of the pressure pairs 402 moves first 20-30cm from the original position, the other pressure pair 402 moves 40-60cm from the original position, and one of the pressure pairs 402 moves 40-60cm again, wherein the distance between each of the rungs is equal to the distance between the two pressure pairs 402 after movement, wherein the pressure of the pressure body 401 acts on the rungs.
The movement span of the gripping ladder 30 is about 20-30cm by using both hands alternately, and the pressure of the pressure body 401 acts on the crosspiece, which corresponds to the user's foot stepping on the crosspiece.
The application also provides a static load test device of the ladder 30, which comprises:
a wall 10;
a sliding component 20 which is arranged vertically to the wall 10 and extends along the wall surface direction of the wall 10;
a ladder 30 having one end connected to the wall 10 and the other end connected to the sliding assembly 20, the ladder 30 being capable of sliding relative to the wall 10 via the sliding assembly 20, the ladder 30 being used as a rung for a user to stand;
a personifier 40, disposed on the ladder 30, movable on the ladder 30, and configured to simulate a crawling action of a person.
In this embodiment, the static load test device for the ladder 30 includes: the wall 10, the sliding component 20, the ladder 30 and the anthropomorphic device 40 are arranged vertically to the wall 10, and the sliding component 20 extends along the wall surface direction of the wall 10. One end of a ladder 30 is connected with the wall 10, the other end is connected with the sliding assembly 20, the ladder 30 can slide relative to the wall 10 through the sliding assembly 20, and the ladder 30 is used for a crosspiece for a user to stand. A personifier 40 is provided on the ladder 30, movable on the ladder 30, and configured to simulate a crawling action of a person.
By controlling the anthropomorphic implement 40 to move on the ladder 30 to simulate the behavior of a person, the pressure and the cross bar bending variations experienced by the ladder 30 when a user in a real environment crawls the ladder 30 can be simulated. Various data of the ladder 30 device at the time of actual use is accurately detected. The slide assembly 20 may enable the ladder 30 to be moved relative to the wall 10 such that the angle of the ladder 30 to the wall 10 may be varied.
In the static load test device for the ladder 30 provided by the application, the anthropomorphic device 40 comprises:
a pressure body 401 slidably connected to the ladder 30 and connected to the rung, capable of applying pressure to the rung;
pressure pairs 402 are respectively provided on both sides of the ladder 30 and connected to the pressure body 401, and the pressure pairs 402 on both sides can alternately move on the ladder 30 when the pressure body 401 slides.
When a user is on the ladder 30, the pressure main body 401 applies pressure to the crosspiece, which is equivalent to stepping on the crosspiece by feet, when the pressure auxiliary hands 402 slide on the pressure main body 401, the pressure auxiliary hands 402 on two sides can alternately move on the ladder 30, so that the arm action of the user is realized, and the pressure born by the ladder 30 in the actual use environment is accurately simulated through the arrangement.
When the pressure body 401 moves, the pressure auxiliary hands 402 also move alternately, the distance of each movement of the pressure body 401 is one crosspiece, and accordingly, one pressure auxiliary hand 402 also moves one crosspiece, and after the movement is completed, the next movement time is reached, and the other pressure auxiliary hand 402 moves.
In the static load test device for the ladder 30 provided by the application, the pressure main body 401 comprises a sliding main body 4011, a main weight 4012 and a hydraulic component 4013, the sliding main body 4011 and the ladder 30 are sleeved together, the main weight 4012 is installed on the sliding main body 4011, the hydraulic component 4013 comprises a hydraulic cylinder 4014 and an abutting piece 4015, the hydraulic cylinder 4014 is installed on the sliding main body 4011 and inclines to the sliding main body 4011, a driving rod of the hydraulic cylinder 4014 is arranged inside the sliding main body 4011 in a penetrating mode, the abutting piece 4015 is connected with a driving end of the hydraulic cylinder 4014, and the abutting piece 4015 is used for abutting a cross rod.
The hydraulic cylinder 4014 activates the push abutment 4015 against the crosspiece, so that the pressure body 401 as a whole abuts against the crosspiece, the pressure of the pressure body 401 as a whole being applied to the crosspiece. The sliding body 4011 can move on the ladder 30, and the sliding body 4011 moves by a drive, which can be a motor, a gear, a tire, and the like, that is interconnected, the motor driving the tire to move on the ladder 30. Or by means of a synchronous belt assembly.
The main weight 4012 is capable of adding load weight to the sliding body 4011, simulating the weight of different people.
In the present application, a pressure sensor and an angle sensor are provided for measuring the pressure and angle changes to which the respective components of the ladder 30 are subjected when the anthropomorphic device 40 moves the ladder 30.
In the static load test device for the ladder 30 provided by the application, the pressure auxiliary hand 402 comprises a sliding auxiliary body 4021, an auxiliary weight piece 4022 and a push rod device 4023, wherein the push rod device 4023 is arranged on the side surface of the pressure main body 401, a driving rod of the push rod device 4023 is connected with the sliding auxiliary body 4021, and the auxiliary weight piece 4022 is arranged on the sliding auxiliary body 4021.
The push rod device 4023 pushes the sliding sub body 4021 to alternately move, and the sub weight 4022 simulates the weight applied to the ladder 30 by the arm.
In the static load test device for the ladder 30 provided by the application, the pressure body 401 is further provided with a power device, and the power device is configured to drive the pressure body 401 to move.
In the static load test device for the ladder 30 provided by the application, the sliding assembly 20 comprises a sliding rail 201, a sliding plate 202 and a screw rod, wherein the sliding plate 202 is in sliding connection with the sliding rail, and the screw rod is arranged through the sliding plate 202.
The slide plate 202 slides on the slide rail 201 and moves relative to the wall 10, so that the ladder 30 moves, and the screw fixes the slide plate 202 to the ladder 30 moved to a predetermined position.
In the static load test device for the ladder 30 provided by the application, the arc-shaped groove 203 is arranged on the sliding plate 202, the arc-shaped rail 204 is arranged on one side of the arc-shaped groove 203 opposite to the wall 10, the arc-shaped rail 204 corresponds to the arc-shaped groove 203 in shape, the arc-shaped rail 204 is connected with the positioning plate 205 in a sliding manner, the positioning plate 205 is provided with bolts in a penetrating manner, and the positioning plate 205 is connected with the ladder 30.
Providing the arcuate rail 204 and the positioning plate 205 can further improve the abutment stability of the bottom of the ladder 30 and increase the angle of the ladder 30 that is inclined to the wall 10. The positioning plate 205 can abut against the bottom of the ladder 30, and the positioning plate 205 slides on the arcuate rail 204.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A method of testing a ladder for static load, comprising:
one end of the ladder is placed on the test wall, and the other end of the ladder is placed on the sliding plate, wherein the sliding plate slides relative to the sliding rail;
placing a anthropomorphic device on the ladder, wherein the anthropomorphic device comprises a pressure main body and a pressure auxiliary hand, the pressure main body is connected with the pressure auxiliary hand, and the pressure main body and the pressure auxiliary hand are matched for movement to simulate the crawling action of a person on the ladder;
collecting pressure data of each contact point of the anthropomorphic device when the ladder climbs through a sensor, and collecting bending angle data of a ladder crosspiece;
the auxiliary pressure hand comprises two auxiliary pressure hands which are respectively connected to two sides of the ladder, and the crawling action of the auxiliary pressure hand and the auxiliary pressure hand on the ladder through the cooperation of the auxiliary pressure hand and the auxiliary pressure hand comprises the following steps:
when the pressure main body crawls the ladder, the two pressure auxiliary hands alternately move for a preset distance;
the pressure main body comprises a sliding main body, a main counterweight piece and a hydraulic component, the sliding main body and the ladder are sleeved together, the main counterweight piece is installed on the sliding main body, the hydraulic component comprises a hydraulic cylinder and an abutting piece, the hydraulic cylinder is installed on the sliding main body and inclines to the sliding main body, a driving rod of the hydraulic cylinder penetrates through the sliding main body, the abutting piece is connected with a driving end of the hydraulic cylinder, and the abutting piece is used for abutting against a cross rod;
the pressure body is also provided with a power device, and the power device is configured to drive the pressure body to move;
the pressure auxiliary comprises a sliding auxiliary body, an auxiliary weight piece and a push rod device, wherein the push rod device is installed on the side face of the pressure main body, a driving rod of the push rod device is connected with the sliding auxiliary body, and the auxiliary weight piece is installed on the sliding auxiliary body.
2. The method of claim 1, wherein the alternating movement of the two pressure pairs by a predetermined distance comprises:
one of the pressure auxiliary hands moves 20-30cm from the original position, the other pressure auxiliary hand moves 40-60cm from the original position, and one of the pressure auxiliary hands moves 40-60cm again, wherein the distance between each crosspiece is equal to the distance between the two pressure auxiliary hands after moving, and the pressure of the pressure main body acts on the crosspiece.
3. A ladder static load test device, comprising:
a wall;
the sliding component is arranged perpendicular to the wall and extends along the wall surface direction of the wall;
a ladder, one end of which is connected with the wall, and the other end of which is connected with the sliding component, wherein the ladder can slide relative to the wall through the sliding component, and the ladder is used for a crosspiece for a user to stand;
a anthropomorphic implement, disposed on the ladder, movable on the ladder, and configured to simulate a crawling action of a person;
the anthropomorphic instrument comprises:
a pressure body slidably coupled to the ladder and coupled to the rung, capable of applying pressure to the rung;
the pressure auxiliary hands are respectively arranged at two sides of the ladder and are connected with the pressure main body, and when the pressure main body slides, the pressure auxiliary hands at two sides can alternately move on the ladder;
the pressure sensor and the angle sensor are used for measuring pressure and angle changes of each part of the ladder when the anthropomorphic device moves;
the pressure main body comprises a sliding main body, a main counterweight piece and a hydraulic component, the sliding main body and the ladder are sleeved together, the main counterweight piece is installed on the sliding main body, the hydraulic component comprises a hydraulic cylinder and an abutting piece, the hydraulic cylinder is installed on the sliding main body and inclines to the sliding main body, a driving rod of the hydraulic cylinder penetrates through the sliding main body, the abutting piece is connected with a driving end of the hydraulic cylinder, and the abutting piece is used for abutting against a cross rod;
the pressure body is also provided with a power device, and the power device is configured to drive the pressure body to move;
the pressure auxiliary comprises a sliding auxiliary body, an auxiliary weight piece and a push rod device, wherein the push rod device is installed on the side face of the pressure main body, a driving rod of the push rod device is connected with the sliding auxiliary body, and the auxiliary weight piece is installed on the sliding auxiliary body.
4. The ladder static load test device of claim 3, wherein the sliding assembly comprises a sliding rail, a sliding plate and a screw, the sliding plate is in sliding connection with the sliding rail, and the screw is arranged through the sliding plate.
5. The ladder static load test device according to claim 4, wherein the sliding plate is provided with an arc groove, one side of the arc groove opposite to the wall is provided with an arc rail, the arc rail corresponds to the arc groove, the arc rail is connected with a positioning plate in a sliding manner, the positioning plate is provided with a bolt in a penetrating manner, and the positioning plate is connected with the ladder.
CN202310869230.0A 2023-07-17 2023-07-17 Ladder static load test method and device Active CN116609105B (en)

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