Static load test device for strength of step bar of ladder

Abstract

The utility model relates to the technical field of ladder step bar static load test devices, and particularly discloses a ladder step bar strength static load test device, which comprises a wall body, a test assembly arranged on one side of the wall body, a fixing assembly and a driving assembly respectively arranged on one side of the test assembly, and a limiting assembly arranged below the test assembly, a steel wire rope is arranged between the test assembly and the driving assembly, the test assembly comprises a ladder located on one side of the wall, treading bars distributed at equal intervals are arranged on the ladder, a connecting block is arranged in the middle of the treading bars, a hanging ring is arranged below the connecting block, a first connecting ring is connected below the hanging ring, and the first connecting ring is used for being connected with one end of the steel wire rope. The ladder step bar strength static load test device is simple in overall design, high in structural stability and convenient to install and use, and the design of the limiting assembly and the fixing assembly is beneficial to improving the precision of a test result.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ladder footrest static load test device, especially to a ladder footrest strength static load test device. BACKGROUND

[0002] Ladder footrest strength static load test is a test method for testing the strength and safety of ladder footrest under static load. The purpose is to ensure that the ladder footrest can withstand sufficient weight without breaking, deforming or failing during normal use, especially when a load is applied to the ladder, to ensure the safety of the user.

[0003] Ladder footrest strength static load test device is a device for testing the strength and safety performance of ladder footrest under static load. A predetermined static load is applied by a weight block or a hydraulic device to simulate the pressure on the ladder footrest during use. A support platform is used to place the ladder and ensure that the ladder is in the correct use state during the test. A force sensor is used to accurately measure the load on the footrest to ensure compliance with standard requirements and monitor the deformation or damage of the ladder under load. The applied load and the stress on the footrest are recorded in real time to provide data support for evaluating the performance of the ladder.

[0004] The existing ladder footrest strength static load test device has the following technical problems: 1. Insufficient measurement accuracy: the test device may have uneven loading or too fast loading speed during loading, resulting in inaccurate test results. 2. Poor device stability: the device may not be stable enough during testing, causing vibration or imbalance during loading, affecting the reliability of test data. 3. Unreasonable structure design: the support structure of the test device may have design defects, such as insufficiently strong bearing brackets that cannot stably support the tested ladder, or the device itself may deform during loading, resulting in test results that do not match actual use conditions. UTILITY MODEL CONTENTS

[0005] (I) Technical problem to be solved

[0006] To solve the above problems, the utility model provides a ladder footrest strength static load test device, especially a strength test device for the footrest position of a ladder under static load, aiming to solve the problems of insufficient measurement accuracy, poor device stability and unreasonable structure design in current ladder footrest strength testing.

[0007] (II) Technical solution

[0008] In order to solve the technical problem, the utility model provides a ladder footstep strength static load test device, including wall, one side of wall is provided with test assembly, one side of test assembly is provided with fixed component and drive assembly respectively, the below of test assembly is provided with limit component, the between test assembly with drive assembly is provided with wire rope,

[0009] The test assembly includes a ladder on one side of the wall, a footstep is provided on the ladder, a connecting block is provided in the middle of the footstep, a pressure sensor is provided in the connecting block, a lifting ring is provided below the connecting block, and a first connecting ring is connected below the lifting ring.

[0010] The limit component includes a bottom plate below the test assembly, a limit hole is provided on the bottom plate, a limit support is provided on the limit hole, a first limit shaft is provided in the limit support, and a first bolt is connected between the limit support and the first limit shaft.

[0011] The fixed component includes a base on one side of the limit component, a fixed support is provided on the base, a connecting piece is provided in the fixed support, a second connecting ring is provided on one side of the connecting piece, a connecting support is provided on one side of the second connecting ring, a second limit shaft is provided in the connecting support, and a second bolt is connected between the connecting support and the second limit shaft.

[0012] The drive assembly includes an oil cylinder on one side of the wall, a piston rod is provided in the oil cylinder, and a third connecting ring is provided at the lower end of the piston rod.

[0013] Further, the first limit shaft is located at the center of symmetry of the limit support, and the limit support and the first limit shaft are detachably connected.

[0014] Further, the limit hole of the limit component is provided with a plurality of limit holes, and the plurality of limit holes are distributed at equal intervals.

[0015] Further, the connecting piece of the fixed component is located at the center of symmetry of the fixed support, and the second limit shaft is located at the center of symmetry of the connecting support.

[0016] Further, the footstep is provided with a plurality of footsteps, and the plurality of footsteps are arranged at equal intervals.

[0017] Further, the axis of the first connecting ring is perpendicular to the axis of the third connecting ring.

[0018] Further, the axis of the piston rod is on the same straight line as the axis of the oil cylinder.

[0019] Further, the bottom plate of the limiting assembly is located at the center of symmetry of the ladder, and the axes of the plurality of limiting holes are parallel.

[0020] Advantages

[0021] 1. The utility model provides a kind of ladder footrest strength static load test device, the ladder footrest strength static load test device is provided with test assembly in the side of wall body, the side of test assembly is provided with fixed component and drive component respectively, the lower of test assembly is provided with limiting assembly, steel wire rope is arranged between test assembly and drive component, test assembly includes the ladder located in the side of wall body, ladder is provided with equidistantly distributed footrest, connecting block is provided in the middle of footrest, lifting ring is provided below connecting block, first connecting ring is connected below lifting ring, and first connecting ring is used to connect the end of steel wire rope, the overall structure of the ladder footrest strength static load test device is simple, and installation and use are convenient, and it is convenient for staff to carry out static load test of footrest.

[0022] 2. The utility model provides a kind of ladder footrest strength static load test device, the limiting assembly designed in the ladder footrest strength static load test device, the limiting assembly includes the bottom plate located below test assembly, limiting hole is provided on bottom plate, limiting support is provided on limiting hole, first limiting shaft is arranged in the inside of limiting support, by inserting limiting support into limiting hole, steel wire rope is threaded through first limiting shaft, to limit steel wire rope, in addition, since the limiting hole of the limiting assembly is provided with multiple, multiple limiting holes are equidistantly arranged, the position of steel wire rope and test assembly can be adjusted by adjusting the position of limiting support low end inserted into limiting hole, to adjust the position of required test footrest, the design of the limiting assembly is convenient for the strength performance of multiple footrests under static load to be tested, so that the test result of the ladder footrest test device is more accurate, and it helps to improve the strength test precision of ladder footrest under static load.

[0023] 3. The utility model provides a kind of ladder footrest strength static load test device, the fixed component designed in the ladder footrest strength static load test device, the fixed component is located between limiting assembly and drive component, fixed support is provided on the base of the fixed component, connecting piece is arranged in the inside of fixed support, second connecting ring is provided on the side of connecting piece, connecting support is provided on the side of second connecting ring, second limiting shaft for connecting steel wire rope is arranged in the inside of connecting support, the design of the fixed component helps to connect steel wire rope between limiting assembly and drive component, to improve the structural stability of the test device, prevent test device from appearing vibration or unbalance phenomenon in static load loading process due to insufficient structure in testing process, to affect the reliability of test data.

[0024] 4. The utility model provides a kind of ladder footrest strength static load test device, the ladder footrest strength static load test device, the driving assembly designed includes the oil cylinder in the one side of wall, the inside of oil cylinder is provided with piston rod, the lower end of piston rod is provided with third connecting ring, the end of steel wire rope is connected to the third connecting ring below this driving assembly, piston rod is driven in vertical direction by oil cylinder and does reciprocating motion, the third connecting ring below piston rod is driven in vertical direction and moves reciprocatingly, to adjust the tightness degree of steel wire rope connected with third connecting ring, to change the static load size applied to footrest, it is convenient to obtain the test data of footrest under different static load, it is helpful to staff assess the fracture, deformation or failure of footrest under different static load, improve the security of ladder footrest use. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the first perspective drawing of the utility model of a kind of ladder footrest strength static load test device;

[0026] Figure 2 It is the second perspective drawing of the utility model of a kind of ladder footrest strength static load test device;

[0027] Figure 3 It is the third perspective drawing of the utility model of a kind of ladder footrest strength static load test device;

[0028] Figure 4 It is the test assembly structure diagram of the utility model of a kind of ladder footrest strength static load test device;

[0029] Figure 5 It is the first perspective drawing of the utility model of a kind of ladder footrest strength static load test device limit component;

[0030] Figure 6 It is the second perspective drawing of the utility model of a kind of ladder footrest strength static load test device limit component;

[0031] Figure 7 It is the first perspective drawing of the utility model of a kind of ladder footrest strength static load test device fixed component;

[0032] Figure 8 It is the second perspective drawing of the utility model of a kind of ladder footrest strength static load test device fixed component;

[0033] Figure 9 It is the driving assembly structure diagram of the utility model of a kind of ladder footrest strength static load test device.

[0034] Corresponding component names of various reference numerals in the figures are as follows: 1, wall body; 2, test assembly; 201, ladder; 202, lifting ring; 203, first connecting ring; 204, step stop; 205, connecting block; 206, pressure sensor; 3, limiting assembly; 301, bottom plate; 302, limiting hole; 303, limiting support; 304, first limiting shaft; 305, first bolt; 4, fixing assembly; 401, base; 402, fixing support; 403, connecting piece; 404, second connecting ring; 405, connecting support; 406, second limiting shaft; 407, second bolt; 5, steel wire rope; 6, driving assembly; 601, oil cylinder; 602, piston rod; 603, third connecting ring. DETAILED DESCRIPTION

[0035] The present application will be described in detail below with reference to the drawings and specific embodiments.

[0036] The above and other aspects of the present application will become more apparent by describing in detail the only embodiments thereof with reference to the attached drawings in which:

[0037] It is to be understood that the embodiments described hereinbelow within the scope of the appended claims. It will be apparent to one of ordinary skill in the art from this disclosure that the aspects described herein can be embodied in a wide variety of forms and that any specific structure and / or function described herein is merely illustrative. Based on the teachings herein one skilled in the art should appreciate that an aspect described herein can be implemented independently of any other aspects and that an aspect described herein can be implemented both as any number of software and / or hardware configurations and that the examples described herein are not the only way to implement that aspect. For example, an item or article of manufacture can comprise any suitable structure or apparatus that is capable of functioning as described herein. In this regard, the figures herein are merely illustrative and their

[0038] It is also to be understood that the herein-provided diagrams are only schematic and that the dimensions of the various components in the drawings can be exaggerated for clarity. The reference signs in the drawings should not be construed as limiting the scope of the application.

[0039] In addition, in the following description, specific details are provided in order to facilitate a thorough understanding of the examples. However, one skilled in the art will understand that the examples can be practiced without these specific details.

[0040] The technical solutions provided by the embodiments of the present application are described below with reference to the drawings.

[0041] Referring to Figures 1 to 9 The utility model provides a ladder footrest strength static load test device, in order to make the utility model practical purpose, technical scheme and advantage more clearly, below combining with the working procedure of the device, the specific operation procedure of the utility model is introduced in detail.

[0042] The utility model provides a ladder footrest strength static load test device, including wall body 1, one side of wall body 1 is provided with test assembly 2, one side of test assembly 2 is provided with fixed assembly 4 and drive assembly 6 respectively, the lower portion of test assembly 2 is provided with limit component 3, and the steel wire rope 5 is arranged between test assembly 2 and drive assembly 6.

[0043] Test assembly 2 includes the ladder 201 located at one side of wall body 1, is provided with footrest 204 on ladder 201, the middle of footrest 204 is provided with connecting block 205, the inside of connecting block 205 is provided with pressure sensor 206, the lower portion of connecting block 205 is provided with lifting ring 202, and the lower portion of lifting ring 202 is connected with first connecting ring 203.

[0044] Limit component 3 includes the bottom plate 301 located at the lower portion of test assembly 2, is provided with limit hole 302 on bottom plate 301, is provided with limit support 303 on limit hole 302, the inside of limit support 303 is provided with first limit shaft 304, and the first bolt 305 is connected between limit support 303 and first limit shaft 304.

[0045] Fixed assembly 4 includes the base 401 located at one side of limit component 3, is provided with fixed support 402 on base 401, the inside of fixed support 402 is provided with connecting piece 403, one side of connecting piece 403 is provided with second connecting ring 404, one side of second connecting ring 404 is provided with connecting support 405, the inside of connecting support 405 is provided with second limit shaft 406, and the second bolt 407 is connected between connecting support 405 and second limit shaft 406.

[0046] Drive assembly 6 includes the oil cylinder 601 located at one side of wall body 1, is provided with piston rod 602 in the inside of oil cylinder 601, and the lower end of piston rod 602 is provided with third connecting ring 603.

[0047] Referring to Figures 1 to 6, the first limiting shaft 304 is located at the center of symmetry of the limiting support 303, the limiting support 303 is detachably connected with the first limiting shaft 304, the limiting holes 302 of the limiting assembly 3 are provided in plurality, the plurality of limiting holes 302 are equidistantly distributed, and the bottom plate 301 of the limiting assembly 3 is located at the center of symmetry of the ladder 201, and the axes of the plurality of limiting holes 302 are parallel to each other.

[0048] Referring to Figures 1 to 8 , the connecting piece 403 of the fixing assembly 4 is located at the center of symmetry of the fixing support 402, and the second limiting shaft 406 is located at the center of symmetry of the connecting support 405.

[0049] Referring to Figures 1 to 4 , the plurality of steps 204 are equidistantly arranged.

[0050] Referring to Figures 1 to 9 , the axis of the first connecting ring 203 is perpendicular to the axis of the third connecting ring 603, and the axis of the piston rod 602 is on the same straight line as the axis of the oil cylinder 601.

[0051] The working principle and specific working process of the ladder step strength static load test device are as follows:

[0052] According to the structural design of the ladder 201 step 204 strength static load test device, the ladder 201 is fixed on one side of the wall 1 to ensure the stability of the ladder 201, the position of the step 204 to be tested is selected, and the connecting block 205 of the test assembly 2 is fixed on the step 204. One end of the steel wire rope 5 is connected to the first connecting ring 203, the position of the limiting assembly 3 is adjusted, the lower end of the limiting support 303 is inserted into the limiting hole 302, the leading end of the steel wire rope 5 passes through the first limiting shaft 304 of the limiting assembly 3, the position of the fixing support 402 is adjusted according to the test requirements, and one end of the leading steel wire rope 5 passes through the second limiting shaft 406 in the connecting support 405. The steel wire rope 5 is led out from the bottom end of the second limiting shaft 406, and the end of the steel wire rope 5 is connected to the third connecting ring 603 below the driving assembly 6. After the test device is installed;

[0053] Start the driving assembly 6, the oil cylinder 601 of the driving assembly 6 starts to move, driving the piston rod 602 inside the oil cylinder 601 to make reciprocating linear motion in the vertical direction, the movement of the piston rod 602 drives the third connecting ring 603 connected thereto to move reciprocally in the vertical direction, thereby tensioning the steel wire rope 5 connected with the third connecting ring 603. By adjusting the tensioning degree of the steel wire rope 5, the size of the static load applied to the step 204 is changed, so as to facilitate the acquisition of test data of the step 204 under different static loads, which is helpful for the staff to evaluate the rupture, deformation or failure of the step 204 under different static loads, and improve the safety of the step 204 in use;

[0054] In addition, since the limiting holes 302 on the limiting assembly 3 are provided with multiple limiting holes 302, the multiple limiting holes 302 are arranged at equal intervals, the position of the steel wire rope 5 connected with the test assembly 2 can be adjusted by adjusting the position of the bottom end of the limiting support 303 inserted into the limiting hole 302, so as to adjust the position of the required test step 204, facilitate the test of the strength performance of the multiple steps 204 under static load, and make the test result of the strength test device of the step 204 under static load more accurate, which is helpful to improve the test precision of the strength of the step 204 of the ladder equipment 201 under static load.

[0055] During the process of applying static load, the pressure sensor 206 is used to monitor the deformation of the step 204 in real time, if the step 204 is obviously deformed or broken, the test should be stopped immediately and the deformation amount or the damage type is recorded.

[0056] According to the recorded data and the actual observation results in the test, the carrying capacity of the step 204 is evaluated, the deformation, fracture and other problems of the step 204 under the specified load are evaluated, and the judgment basis is provided for the staff, so as to make the use of the step 204 meet the standard.

[0057] In the specification, the same and similar parts among various embodiments can be referred to each other, and each embodiment focuses on the difference from other embodiments.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A ladder rest strength static load test device characterized by: The utility model provides a wall body (1), one side of wall body (1) is provided with test assembly (2), one side of test assembly (2) is provided with fixed assembly (4) and drive assembly (6) respectively, the lower of test assembly (2) is provided with limiting assembly (3), and the steel wire rope (5) is arranged between test assembly (2) and drive assembly (6); The test assembly (2) includes a ladder (201) located on one side of the wall (1), the ladder (201) is provided with a step (204), the step (204) is provided with a connecting block (205) in the middle, the connecting block (205) is provided with a pressure sensor (206) inside, the connecting block (205) is provided with a lifting ring (202) below, and the lifting ring (202) is connected with a first connecting ring (203) below. The limiting assembly (3) includes a bottom plate (301) located below the test assembly (2), the bottom plate (301) is provided with a limiting hole (302), the limiting hole (302) is provided with a limiting support (303), the limiting support (303) is provided with a first limiting shaft (304) inside, and the limiting support (303) and the first limiting shaft (304) are connected with a first bolt (305). The fixed assembly (4) includes a base (401) located on one side of the limiting assembly (3), the base (401) is provided with a fixed support (402), the fixed support (402) is provided with a connecting piece (403) inside, the connecting piece (403) is provided with a second connecting ring (404) on one side, the second connecting ring (404) is provided with a connecting support (405) on one side, the connecting support (405) is provided with a second limiting shaft (406) inside, and the connecting support (405) and the second limiting shaft (406) are connected with a second bolt (407). The drive assembly (6) includes a oil cylinder (601) located on one side of the wall (1), the oil cylinder (601) is provided with a piston rod (602) inside, and the piston rod (602) is provided with a third connecting ring (603) at the lower end.

2. The static load testing device for ladder rung strength according to claim 1, characterized in that: The first limiting shaft (304) is located at the center of symmetry of the limiting support (303), and the limiting support (303) and the first limiting shaft (304) are detachably connected.

3. The static load testing device for ladder rung strength according to claim 1, wherein: The limiting hole (302) of the limiting assembly (3) is provided with a plurality of limiting holes (302), and the plurality of limiting holes (302) are equally spaced.

4. The static load testing device for ladder rung strength according to claim 1, wherein: The connecting piece (403) of the fixed assembly (4) is located at the center of symmetry of the fixed support (402), and the second limiting shaft (406) is located at the center of symmetry of the connecting support (405).

5. The static load testing device of claim 1, wherein: The step (204) is provided with a plurality of steps (204), and the plurality of steps (204) are equally spaced.

6. The static load testing device of claim 1, wherein: The axis of the first connecting ring (203) is perpendicular to the axis of the third connecting ring (603).

7. The static load testing device of claim 1, wherein: The axis of the piston rod (602) is on the same straight line as the axis of the oil cylinder (601).

8. The static load testing device of claim 1, wherein: The bottom plate (301) of the limiting assembly (3) is located at the center of symmetry of the ladder (201), and the axes of the plurality of limiting holes (302) are parallel.

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