Portable ladder testing device

Abstract

The utility model discloses a portable ladder testing device, which comprises a main testing rack and an auxiliary testing rack, and a servo loading piece is arranged on the inner wall of the main testing rack; the driving end of the stepping motor drives the lead screw to rotate, then the lead screw applies force to the threaded communication hole through threaded connection, one end of the lead screw drives the sliding rod to move through the threaded communication hole, then the sliding rod slides on the inner wall of the test supporting rod, and the length of the telescopic assembly is adjusted. And through the design, the same device can carry out a horizontal strength test or a step strength test on the ladder according to working requirements, so that the problems that in the process of carrying out the horizontal strength test and the step strength test on the ladder, two ladder test devices must be used for separately operating the two tests, and the working efficiency is high are solved. The test efficiency is poor, and the whole test period is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ladder test, specifically to a portable ladder test device. BACKGROUND

[0002] In the process of carrying out horizontal strength test and step strength test on the ladder by the ladder test device, the two tests must be carried out separately by using two different ladder test devices, which leads to poor test efficiency and prolongs the overall test period.

[0003] In addition, since the height of the ladder has many different specifications, the existing ladder test device lacks flexibility in length and cannot be effectively adjusted according to actual needs, so it cannot meet the test of ladders of different heights. SUMMARY

[0004] To solve the problems raised in the background art, the utility model provides a portable ladder test device to solve the above problems.

[0005] To achieve the above-mentioned purposes, the utility model provides the following technical scheme:

[0006] A portable ladder test device comprises a main test frame and an auxiliary test frame, the inner wall of the main test frame is provided with a servo loading part, the inner wall of the main test frame is provided with an extension assembly, one end of the extension assembly is connected with the auxiliary test frame;

[0007] The inner walls of the main test frame and the auxiliary test frame are provided with ladders, the outer wall of the main test frame is provided with a fixing frame, the opposite inner walls of the fixing frame are rotatably connected with rollers one, the outer wall of the main test frame is provided with a fixing support, the opposite inner walls of the fixing support are rotatably connected with rollers two, the outer wall of the rollers two is slidably connected with a steel wire, one end of the steel wire is provided with a horizontal tension clamp, and the horizontal tension clamp is fixed to the inner wall of the ladder, the outer wall of the extension assembly is provided with a mounting frame, the opposite inner walls of the mounting frame are rotatably connected with rollers three, the outer wall of the rollers three is slidably connected with a steel wire, one end of the steel wire is provided with a vertical tension clamp, and the vertical tension clamp is fixed to the inner wall of the ladder.

[0008] As a preferred scheme of the utility model, the extension assembly comprises a rectangular cylindrical test support rod, one end of the test support rod is arranged on the inner wall of the main test frame, a stepper motor is inlaidly arranged at the port of the test support rod, a lead screw is arranged on the driving end of the stepper motor, a sliding rod is slidably connected to the inner wall of the test support rod on one side of the stepper motor, and a threaded communication hole is formed in the sliding rod along the axis.

[0009] As the preferred scheme of the utility model, the inner wall of the threaded communication hole is threadedly connected with a screw rod, one end of the sliding rod is connected with a secondary test frame, and the outer wall of the test support rod is connected with a mounting frame.

[0010] As the preferred scheme of the utility model, the outer walls of the primary test frame and the secondary test frame are both provided with L-shaped grooves.

[0011] As the preferred scheme of the utility model, one end of the ladder is placed on the inner wall of the L-shaped groove of the primary test frame.

[0012] As the preferred scheme of the utility model, the other end of the ladder is placed on the inner wall of the L-shaped groove of the secondary test frame.

[0013] As the preferred scheme of the utility model, the servo loading part comprises a shell and a rack, the shell is installed on the outer wall of the primary test frame, the rack is fixedly installed in the inner cavity of the shell, a servo motor is installed on the rack, a speed reducer is installed at the driving end of the servo motor, a steel wire winder is installed at the driving end of the speed reducer, the speed reducer is composed of a driving synchronous wheel, a synchronous belt and a driven synchronous wheel, the driving synchronous wheel is connected to the driven synchronous wheel through the synchronous belt, the driving synchronous wheel in the speed reducer is fixedly connected to the driving end of the servo motor, the servo motor drives the driving synchronous wheel, the driving synchronous wheel drives the driven synchronous wheel to rotate through the synchronous belt, the steel wire winder is a winding roller, one end of the winding roller is installed on the driven synchronous wheel, both ends of the winding roller are rotatably connected to the rack arranged inside the shell, one end of the winding roller penetrates through to the other side of the rack and is fixedly connected to the driven synchronous wheel, the steel wire is provided with two groups and is located on the outer wall of the steel wire winder, the fixing frame is located directly below the fixing support, and the shell is provided with a window for the two groups of steel wires to pass out.

[0014] As the preferred scheme of the utility model, the first roller is located directly below the second roller, one end of the steel wire is slidably connected to the outer wall of the first roller, the horizontal tension clamp is located on one side of the vertical tension clamp, and universal wheels are arranged at the bottom corners of the primary test frame and the secondary test frame.

[0015] The portable ladder test device is provided with the horizontal tension clamp and the vertical tension clamp, the servo loading part applies tension to the horizontal tension clamp from the horizontal direction through the steel wire when the horizontal strength test is carried out on the ladder, and then the horizontal tension clamp applies tension to the ladder in the horizontal direction, the steel wire applies tension to the vertical tension clamp in the vertical direction when the step strength test is carried out on the ladder, and then the device applies tension to the ladder in the horizontal direction and the vertical direction through the horizontal tension clamp and the vertical tension clamp respectively, so that the same device can carry out the horizontal strength test or the step strength test on the ladder according to the working requirement.

[0016] The utility model discloses a telescopic subassembly is arranged in portable ladder test device can realize the length of adjustment device, the drive end of step motor drives the rotation of screw rod, and then makes screw rod to exert force to threaded communication hole through threaded connection, and the one end of screw rod drives the movement of slide bar through threaded communication hole, and then makes slide bar slide on the inner wall of test support rod to adjust the length of telescopic subassembly, and the one end of slide bar drives the movement of vice test frame, and then the distance between vice test frame and main test frame is adjusted to be suitable for the ladder of different height, and when placing, can make slide bar slide into the inner chamber of test support rod. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is whole structure schematic diagram of the utility model;

[0018] Figure 2 It is overhead structure schematic diagram of the utility model;

[0019] Figure 3 It is side structure schematic diagram of the utility model;

[0020] Figure 4 It is A structure amplification schematic diagram of the utility model Figure 2 ;

[0021] Figure 5 It is B structure amplification schematic diagram of the utility model Figure 2 ;

[0022] In the drawing: 1, main test frame;2, vice test frame;3, servo loading piece;31, shell;32, servo motor;33, speed reducer;331, driving synchronous wheel;332, synchronous belt;333, driven synchronous wheel;34, steel wire reel;35, rack;4, telescopic subassembly;401, test support rod;402, step motor;403, screw rod;404, slide bar;405, threaded communication hole;5, ladder;6, fixed frame;7, gyro wheel one;8, fixed support;9, gyro wheel two;10, steel wire;11, horizontal tension clamp;12, mounting frame;13, gyro wheel three;14, vertical tension clamp;15, universal wheel. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by the person skilled in the art without creative labor on the basis of the embodiments in the utility model belong to the protection scope of the utility model.

[0024] Embodiment: please refer to Figures 1-5 The utility model provides a portable ladder test device, including main test frame 1 and vice test frame 2, be provided with servo loading spare 3 on the inner wall of main test frame 1, be installed with telescopic component 4 on the inner wall of main test frame 1, one end of telescopic component 4 is connected with vice test frame 2.

[0025] The inner wall of main test frame 1 and vice test frame 2 is provided with ladder 5, the outer wall of main test frame 1 is provided with fixed frame 6, and the opposite inner wall of fixed frame 6 is rotatably connected with gyro wheel one 7, the outer wall of main test frame 1 is provided with fixed support 8, and the opposite inner wall of fixed support 8 is rotatably connected with gyro wheel two 9, and the outer wall of gyro wheel two 9 is slidably connected with steel wire 10, wherein one end of steel wire 10 is provided with horizontal tension clamp 11, and the horizontal tension clamp 11 is fixed on the inner wall of ladder 5, the outer wall of telescopic component 4 is provided with mounting bracket 12, the opposite inner wall of mounting bracket 12 is rotatably connected with gyro wheel three 13, and the outer wall of gyro wheel three 13 is slidably connected with steel wire 10, wherein one end of steel wire 10 is provided with vertical tension clamp 14, and the vertical tension clamp 14 is fixed on the inner wall of ladder 5.

[0026] In this embodiment, specific reference is made to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5 , telescopic component 4 includes rectangular cylindrical test support rod 401, one end of test support rod 401 is provided on the inner wall of main test frame 1, step motor 402 is embeddedly installed at the port of test support rod 401, driving end of step motor 402 is installed with lead screw 403, one side of step motor 402 and the inner wall of test support rod 401 are slidably connected with slide bar 404, and threaded communication hole 405 is opened along the axis in the inner wall of slide bar 404, lead screw 403 is threadedly connected in the inner wall of threaded communication hole 405, one end of slide bar 404 is connected with vice test frame 2, and mounting bracket 12 is connected on the outer wall of test support rod 401.

[0027] The outer wall of the main test frame 1 and the outer wall of the auxiliary test frame 2 are both provided with an L-shaped slot, one end of the ladder 5 is placed on the inner wall of the L-shaped slot of the main test frame 1, the other end of the ladder 5 is placed on the inner wall of the L-shaped slot of the auxiliary test frame 2, the servo loading part 3 comprises a shell 31 and a rack 35, the shell 31 is installed on the outer wall of the main test frame 1, the rack 35 is fixedly installed in the inner cavity of the shell 31, a servo motor 32 is installed on the rack 35, a speed reducer 33 is installed on the driving end of the servo motor 32, a steel wire winder 34 is installed on the driving end of the speed reducer 33, the speed reducer 33 is composed of a driving synchronous wheel 331, a synchronous belt 332 and a driven synchronous wheel 333, the driving synchronous wheel 331 is connected to the driven synchronous wheel 333 through the synchronous belt 332, the driving synchronous wheel 331 in the speed reducer 33 is fixedly connected to the driving end of the servo motor 32, the servo motor 32 drives the driving synchronous wheel 331 to rotate, the steel wire winder 34 is a winding roller, one end of the winding roller is installed on the driven synchronous wheel 333, both ends of the winding roller are rotatably connected to the rack 35 arranged inside the shell 31, one end of the winding roller penetrates through the other side of the rack 35 and is fixedly connected to the driven synchronous wheel 333, the steel wire 10 is provided with two groups and is located on the outer wall of the steel wire winder 34, the fixed frame 6 is located directly below the fixed support 8, a window is formed in the shell 31 to facilitate the two groups of steel wires 10 to pass out, the roller one 7 is located directly below the roller two 9, and one end of the steel wire 10 is slidably connected to the outer wall of the roller one 7, the horizontal tension clamp 11 is located on one side of the vertical tension clamp 14, and the bottom corners of the main test frame 1 and the auxiliary test frame 2 are respectively provided with universal wheels 15, so that the telescopic assembly 4 is more convenient to move.

[0028] When the portable ladder test device works, the horizontal tension clamp 11 and the vertical tension clamp 14 are fixed on the outer wall of the ladder 5, and then the switch is turned on.

[0029] When the horizontal strength test of the ladder is carried out, the servo loading part 3 is operated, when the servo motor 32 drives the driving synchronous wheel 331 to rotate, the driving synchronous wheel 331 drives the driven synchronous wheel 333 to rotate through the synchronous belt 332, the steel wire winder 34 is a winding roller, one end of the winding roller is installed on the driven synchronous wheel 333, so that the winding roller of the steel wire winder 34 drives the steel wire 10 to wind and retract, when the steel wire 10 winds and retracts, the servo loading part 3 applies tension to the horizontal tension clamp 11 from the horizontal direction through the steel wire 10, so that the horizontal tension clamp 11 applies tension to the ladder 5 in the horizontal direction.

[0030] When the ladder is subjected to the step strength test, the steel wire 10 applies vertical pulling force through the roller three 13, and then the steel wire 10 applies pulling force to the vertical pulling force clamp 14 from the vertical direction downward, and the device applies horizontal and vertical pulling force to the ladder 5 through the horizontal pulling force clamp 11 and the vertical pulling force clamp 14 respectively.

[0031] In summary, the same device can perform horizontal strength test or step strength test according to the working requirement, thereby solving the problem that the horizontal strength test and the step strength test must be performed separately by using two different ladder test devices, resulting in poor test efficiency and prolonging the overall test period.

[0032] By opening the switch, the stepper motor 402 is operated, the driving end of the stepper motor 402 drives the lead screw 403 to rotate, and then the lead screw 403 drives the threaded communication hole 405 through the threaded connection, one end of the lead screw 403 drives the sliding rod 404 to move through the threaded communication hole 405, and then the sliding rod 404 slides on the inner wall of the test support rod 401 to adjust the length of the telescopic assembly 4, and at the same time, one end of the sliding rod 404 drives the secondary test frame 2 to move, and then the distance between the secondary test frame 2 and the primary test frame 1 is adjusted to adapt to ladders 5 of different heights, and when placed, the sliding rod 404 can slide into the inner cavity of the test support rod 401, thereby solving the problem that the existing ladder test device lacks flexibility in length and cannot be effectively adjusted according to actual needs, and cannot meet the test requirements of ladders of different heights.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A portable ladder test device comprising a main test frame (1) and a secondary test frame (2), characterized in that: The inner wall of the main test frame (1) is provided with a servo loading part (3), the inner wall of the main test frame (1) is provided with a telescopic assembly (4), one end of the telescopic assembly (4) is connected with a secondary test frame (2); the inner wall of the main test frame (1) and the secondary test frame (2) is provided with a ladder (5), the outer wall of the main test frame (1) is provided with a fixed frame (6), the opposite inner wall of the fixed frame (6) is rotatably connected with a roller one (7), the outer wall of the main test frame (1) is provided with a fixed support (8), the opposite inner wall of the fixed support (8) is rotatably connected with a roller two (9), the outer wall of the roller two (9) is slidably connected with a steel wire (10), wherein one end of the steel wire (10) is provided with a horizontal tension clamp (11), and the horizontal tension clamp (11) is fixed on the inner wall of the ladder (5), the outer wall of the telescopic assembly (4) is provided with a mounting frame (12), the opposite inner wall of the mounting frame (12) is rotatably connected with a roller three (13), the outer wall of the roller three (13) is slidably connected with a steel wire (10), wherein one end of the steel wire (10) is provided with a vertical tension clamp (14), and the vertical tension clamp (14) is fixed on the inner wall of the ladder (5).

2. A portable ladder test device according to claim 1, wherein: The telescopic assembly (4) comprises a rectangular cylindrical test support rod (401), one end of the test support rod (401) is arranged on the inner wall of the main test frame (1), a stepper motor (402) is inlaidly arranged at the port of the test support rod (401), a lead screw (403) is arranged on the driving end of the stepper motor (402), a sliding rod (404) is slidably connected to the inner wall of the test support rod (401) on one side of the stepper motor (402), and a threaded communication hole (405) is formed in the sliding rod (404) along the axis.

3. A portable ladder test device according to claim 2, wherein: The inner wall of the threaded communication hole (405) is threadedly connected with the lead screw (403), one end of the sliding rod (404) is connected with the secondary test frame (2), and the outer wall of the test support rod (401) is connected with the mounting frame (12).

4. The portable ladder test device of claim 1, wherein: The outer wall of the main test frame (1) and the secondary test frame (2) is provided with an L-shaped groove.

5. The portable ladder test device of claim 1, wherein: One end of the ladder (5) is placed on the L-shaped groove inner wall of the main test frame (1).

6. The portable ladder test device of claim 1, wherein: The other end of the ladder (5) is placed on the L-shaped groove inner wall of the secondary test frame (2).

7. The portable ladder test device of claim 1, wherein: The servo loading part (3) comprises an outer shell (31) and a frame (35), the outer shell (31) is installed on the outer wall of the main test frame (1), the frame (35) is fixedly installed in the inner cavity of the outer shell (31), the servo motor (32) is installed on the frame (35), the driving end of the servo motor (32) is provided with a speed reducer (33), the driving end of the speed reducer (33) is provided with a steel wire winder (34), the speed reducer (33) is composed of a driving synchronous wheel (331), a synchronous belt (332) and a driven synchronous wheel (333), the driving synchronous wheel (331) is connected to the driven synchronous wheel (333) through the synchronous belt (332), the driving synchronous wheel (331) in the speed reducer (33) is fixedly connected to the driving end of the servo motor (32), the servo motor (32) drives the driving synchronous wheel (331), the driving synchronous wheel (331) drives the driven synchronous wheel (333) to rotate through the synchronous belt (332), the steel wire winder (34) is a winding roller, one end of the winding roller is installed on the driven synchronous wheel (333), both ends of the winding roller are rotatably connected to the frame (35) arranged inside the outer shell (31), one end of the winding roller penetrates to the other side of the frame (35) and is fixedly connected to the driven synchronous wheel (333), the steel wire (10) is provided with two groups and is located on the outer wall of the steel wire winder (34), the fixed frame (6) is located directly below the fixed support (8), and the outer shell (31) is provided with a window for the two groups of steel wires (10) to pass out.

8. The portable ladder test device of claim 1, wherein: The roller one (7) is located directly below the roller two (9), one end of the steel wire (10) is slidably connected to the outer wall of the roller one (7), the horizontal tension clamp (11) is located on one side of the vertical tension clamp (14), and the bottom corners of the main test frame (1) and the auxiliary test frame (2) are respectively provided with universal wheels (15).

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