Ladder pulling force detection equipment with angle adjusting function

Abstract

The utility model discloses a ladder pulling force detection device with an angle adjusting function in the technical field of ladder pulling force detection, which comprises a climbing ladder, a pulling force detection assembly is arranged outside the climbing ladder, the pulling force detection assembly comprises a support plate frame, a pulling force adjusting component is connected inside the support plate frame, and the pulling force adjusting component is connected with the climbing ladder. The pulling force adjusting part comprises a first force applying device, the first force applying device is installed in the middle of the inner side of the supporting plate frame, and a second force applying device is arranged at the position, close to the bottom of the first force applying device, of the supporting plate frame. The device can accurately simulate the stress conditions of the ladder at different use angles, effectively solves the problem that the traditional detection equipment is difficult to simulate the actual load distribution, achieves the comprehensive evaluation of the risks of instability, connecting piece shearing or fatigue damage and the like possibly occurring in the actual application of the ladder, and provides a powerful guarantee for the quality control and safe use of the ladder.

Description

Technical Field

[0001] This utility model relates to the field of ladder tensile testing technology, and in particular to a ladder tensile testing device with angle adjustment function. Background Technology

[0002] Ladders are tools or devices designed and manufactured for people to move between spaces of different heights or to perform work at heights. They typically have a multi-step structure to facilitate safe and convenient climbing. There are various types of ladders, including common straight ladders, A-frame ladders, telescopic ladders, and folding ladders. Materials commonly used include aluminum alloy, stainless steel, wood, or fiberglass, offering lightweight, durable, and slip-resistant properties. Ladders are widely used in various scenarios such as homes, construction projects, electrical maintenance, and warehouse management. Their design must comply with relevant safety standards and load-bearing specifications to ensure stability and safety during use.

[0003] In the current field of ladder safety performance evaluation, fixed-angle tensile or stretching test devices are commonly used to test the load-bearing capacity of ladders. These devices mostly rely on a single plane or a fixed angle, applying tension to the ladder manually or through simple mechanical structures. This makes it difficult to simulate the actual load distribution that the ladder bears at different angles during use. Moreover, angle adjustment often requires manual disassembly or replacement of support components, which is time-consuming, labor-intensive, and inefficient. At the same time, existing tensile testing equipment mostly focuses on the strength assessment in a single load direction, neglecting the comprehensive stress situation of the ladder under inclined use, making it difficult to fully reflect the safety risks that may occur in the field, such as instability, shearing of connecting parts, or fatigue failure of the ladder.

[0004] Therefore, there is an urgent need for a new type of testing equipment that can quickly and accurately adjust the angle and simultaneously monitor tensile force during the test to improve testing efficiency and the reliability of the results, thereby more comprehensively ensuring the safety of ladder use. Based on this, we propose a ladder tensile force testing device with angle adjustment function. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a ladder tension testing device with angle adjustment function, which can solve the problems of existing fixed-angle tension testing devices that are difficult to simulate the actual load distribution of ladders at different angles, have complex and inefficient angle adjustment, and cannot comprehensively assess the comprehensive stress situation and potential safety risks of ladders under inclined use conditions.

[0007] To solve the above technical problems, this utility model provides a ladder tension testing device with angle adjustment function, which adopts the following technical solution: it includes a climbing ladder, and a tension testing component is provided on the outside of the climbing ladder. The tension testing component includes a support plate frame, and a tension adjustment component is connected inside the support plate frame. The tension adjustment component includes a first force applicator, which is installed in the middle of the inner side of the support plate frame. A second force applicator is provided on the bottom of the support plate frame near the bottom of the first force applicator.

[0008] The top of the support plate is equipped with a first forward and reverse motor. A ladder detection groove is provided on the inner side of the support plate. A first guide groove is provided in the middle of the ladder detection groove. A forward and reverse screw is connected to the inside of the first guide groove through a bearing. The forward and reverse screw is connected to the output end of the first forward and reverse motor through a transmission connection.

[0009] Optionally, the first force applicator and the second force applicator have the same structure. The first force applicator includes a tension adjustment frame, and a ladder tension plate is installed on one side of the tension adjustment frame.

[0010] Optionally, a second guide groove is provided on both sides of the ladder detection groove near the first guide groove, and a third guide groove is also provided on both sides of the ladder detection groove. Scale marks are also provided on both sides of the two sets of third guide grooves.

[0011] Optionally, a first guide plate is installed in the middle of one side of the tension adjustment frame. The first guide plate is matched with the structure of the first guide groove. A positive and negative screw hole is opened through the middle of the first guide plate. The positive and negative screw hole and the positive and negative screw are threaded together. A second guide plate is connected to both sides of the tension adjustment frame near the first guide plate. The second guide plate and the second guide groove are slidably connected together.

[0012] Optionally, a fourth guide groove is provided in the middle of the side of the tension adjustment frame away from the first guide plate. An adjustment screw is connected inside the fourth guide groove through a bearing. A second forward and reverse motor is installed at one end of the tension adjustment frame near the fourth guide groove. The output end of the second forward and reverse motor is connected to the adjustment screw through a transmission connection. Indicator plates are also provided at both ends of the tension adjustment frame. The indicator plates are matched with the structure of the third guide groove, and the indicator plates and the third guide groove are in sliding fit.

[0013] Optionally, the ladder tension plate has an embedded slot in the middle, which matches the climbing ladder structure. A third guide plate is connected to one side of the ladder tension plate, which matches the fourth guide groove structure. An adjusting screw hole is provided through the middle of the third guide plate, and the adjusting screw hole and the adjusting screw are threaded together.

[0014] In summary, this utility model has at least one of the following beneficial effects:

[0015] 1. The ladder tensile testing equipment designed in this scheme uses a first positive and negative motor to drive the positive and negative screws to rotate. Utilizing the threaded engagement between the positive and negative screw holes and the positive and negative screws, the tension adjustment frame can move along the first guide groove, allowing for vertical position adjustment of the first and second force applicators. This adapts to the testing needs of ladders at different heights. Simultaneously, the second positive and negative motor inside the tension adjustment frame drives the adjustment screw to rotate. Combined with the structural design of the adjustment screw hole and the fourth guide groove, this allows the ladder tension plate to move horizontally, applying tension to the climbing ladder. This enables tensile testing of the climbing ladder at different angles, simulating various stress conditions that the ladder may encounter during actual use. This provides an effective testing method for comprehensively evaluating the safety performance of ladders.

[0016] 2. The ladder tension testing equipment designed in this scheme can precisely adjust the positions of the first and second force applicators by controlling the forward and reverse rotation of the first and second forward and reverse motors, thereby changing the direction and magnitude of the tension applied to the climbing ladder. Through the cooperation of the second guide groove and the third guide groove with the second guide plate and the indicator plate respectively, the stability and guidance of the tension adjustment frame and the ladder tension plate during movement can be ensured. At the same time, the sliding of the indicator plate in the third guide groove can intuitively display the displacement of the tension adjustment frame, providing a reference for precise control of the tension. It can realize the accurate simulation of the stress state of the ladder under different usage angles, effectively solving the problem that traditional testing equipment is difficult to simulate the actual load distribution, and can also effectively improve the accuracy and reliability of the test results. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the tensile force detection component of this utility model;

[0020] Figure 3 This is a schematic diagram of the support plate frame structure of this utility model;

[0021] Figure 4This is a schematic diagram of the tension adjustment component of this utility model;

[0022] Figure 5 This is a schematic diagram of the tension adjustment frame structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the ladder tension plate structure of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Climbing ladder; 2. Tension detection component; 3. Support plate frame; 4. Tension adjustment component; 5. First force applicator; 6. Second force applicator; 7. First forward / reverse motor; 8. Ladder detection slot; 9. First guide slot; 10. Forward / reverse screw; 11. Tension adjustment frame; 12. Ladder tension plate; 13. Second guide slot; 14. Third guide slot; 15. Scale mark; 16. First guide plate; 17. Forward / reverse screw hole; 18. Second guide plate; 19. Fourth guide slot; 20. Adjusting screw; 21. Second forward / reverse motor; 22. Indicator plate; 23. Embedded bayonet; 24. Third guide plate; 25. Adjusting screw hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example: Refer to Figures 1 to 6This utility model provides an embodiment of a ladder tension testing device with angle adjustment function, including a climbing ladder 1. A tension testing component 2 is disposed on the outside of the climbing ladder 1. The tension testing component 2 includes a support frame 3. A tension adjustment component 4 is connected inside the support frame 3. The tension adjustment component 4 includes a first force applicator 5, which is installed in the middle of the inner side of the support frame 3. A second force applicator 6 is disposed near the bottom of the support frame 3 near the first force applicator 5. A first forward / reverse motor 7 is installed on the top of the support frame 3. A ladder testing groove 8 is formed on the inner side of the support frame 3. A first guide groove 9 is formed in the middle of the ladder testing groove 8. A forward / reverse screw 10 is connected to the inside of the first guide groove 9 through a bearing. The forward / reverse screw 10 is connected to the output end of the first forward / reverse motor 7 by a transmission connection. This ladder tension testing device utilizes the first forward / reverse motor 7, the forward / reverse screw 10, and... The coordinated operation of components such as the tension adjustment frame 11 and the ladder tension plate 12 can accurately simulate the stress state of the ladder under different usage angles, effectively solving the problem that traditional testing equipment is difficult to simulate the actual load distribution. It enables a comprehensive assessment of the risks that may occur in the actual application of the ladder, such as instability, shearing of connecting parts, or fatigue failure, providing a strong guarantee for the quality control and safe use of the ladder. The first force applicator 5 and the second force applicator 6 have the same structure. The first force applicator 5 includes the tension adjustment frame 11, and a ladder tension plate 12 is installed on one side of the tension adjustment frame 11. The first force applicator 5 and the second force applicator 6 have the same structure, both consisting of the tension adjustment frame 11 and the ladder tension plate 12. It can limit the climbing ladder 1 to be tested to be placed inside the support plate frame 3, and can apply tension to the climbing ladder 1 placed inside the support plate frame 3, so as to achieve stable support and tension testing of the ladder.

[0027] The ladder detection groove 8 has second guide grooves 13 on both sides near the first guide groove 9. Third guide grooves 14 are also provided on both sides of the ladder detection groove 8. Scale marks 15 are provided on both sides of the two sets of third guide grooves 14. These scale marks 15 provide a quantitative basis for displacement measurement and control, allowing the displacement of the vertically adjustable first force applicator 5 and second force applicator 6 to be accurate to specific scale values, improving detection accuracy and repeatability, and providing a reference for precise tension control. A first guide plate 16 is installed in the middle of one side of the tension adjustment frame 11. The first guide plate 16 matches the structure of the first guide groove 9, and the middle of the first guide plate 16... The tension adjustment frame 11 is provided with positive and negative screw holes 17, which are threadedly engaged with the positive and negative screw rods 10. Second guide plates 18 are connected to both sides of the tension adjustment frame 11 near the first guide plate 16. The second guide plates 18 are slidably engaged with the second guide grooves 13. Through the engagement of the first guide plate 16, the positive and negative screw holes 17, and the positive and negative screw rods 10, as well as the engagement of the second guide plates 18 and the second guide grooves 13, the tension adjustment frame 11 moves more smoothly and precisely in both the vertical and horizontal directions. This allows the tension testing device to accurately control the position and magnitude of the applied tension, improving the accuracy and reliability of the tension test. Furthermore, it more accurately simulates the stress conditions of the ladder in actual use, providing strong support for evaluating the safety performance of the ladder.

[0028] A fourth guide groove 19 is provided in the middle of the side of the tension adjustment frame 11 away from the first guide plate 16. An adjusting screw 20 is connected to the fourth guide groove 19 through a bearing. A second forward and reverse motor 21 is installed at the end of the tension adjustment frame 11 near the fourth guide groove 19. The output end of the second forward and reverse motor 21 is connected to the adjusting screw 20 through a transmission connection. Indicator plates 22 are also provided at both ends of the tension adjustment frame 11. The indicator plates 22 are structurally matched with the third guide groove 14 and are in sliding fit with the third guide groove 14. The second forward and reverse motor 21 drives the adjusting screw 20 to rotate. The adjusting screw 20 can drive the ladder tension plate 12 to move along the fourth guide groove 19 through a threaded engagement, thereby applying a horizontal tension to the climbing ladder 1. Through the above structural design, the tension detection device can simulate different conditions of the ladder in actual use. The stress distribution at the angle provides an effective testing method for comprehensively evaluating the safety performance of the ladder. The middle of the ladder tension plate 12 is provided with an embedded slot 23, which matches the structure of the climbing ladder 1. A third guide plate 24 is connected to one side of the ladder tension plate 12. The third guide plate 24 matches the structure of the fourth guide groove 19. An adjustment screw hole 25 is provided through the middle of the third guide plate 24. The adjustment screw hole 25 and the adjustment screw 20 are threaded together. Through the structural design of the embedded slot 23 matching the climbing ladder 1, the ladder tension plate 12 can be tightly fitted into the step of the ladder. This provides a stable support and connection point for the climbing ladder 1 to be tested for tensile strength, ensuring that the tensile force can be applied evenly and stably to the step of the ladder, avoiding local deformation or damage to the ladder due to uneven force distribution, and ensuring the accuracy and reliability of the tensile strength test.

[0029] Working Principle: The ladder tensile testing device designed in this scheme mainly consists of a support frame 3 and a tensile adjustment component 4. The tensile testing component 2 includes the support frame 3, the tensile adjustment component 4, and related key components such as a transmission motor and screws. When the tensile testing device is working, the climbing ladder 1 is first placed in the ladder testing groove 8 inside the support frame 3. The first positive and negative motor 7 drives the positive and negative screws 10 to rotate. Through the threaded engagement of the positive and negative screw holes 17 and the positive and negative screws 10, the tensile adjustment frame 11 is moved along the first guide groove 9. The movement allows for vertical adjustment of the positions of the first force applicator 5 and the second force applicator 6 to meet the testing requirements of ladders at different heights. Simultaneously, the second forward and reverse motor 21 inside the tension adjustment frame 11 drives the adjustment screw 20 to rotate. In conjunction with the structural design of the adjustment screw hole 25 and the fourth guide groove 19, the ladder tension plate 12 can be moved horizontally, thereby applying tension to the climbing ladder 1. The embedded slot 23 on the ladder tension plate 12 matches the structure of the climbing ladder 1, ensuring that the tension can be stably applied to the ladder.

[0030] The ladder tension testing device designed in this scheme can precisely adjust the positions of the first force applicator 5 and the second force applicator 6 by controlling the forward and reverse rotation of the first forward and reverse motor 7 and the second forward and reverse motor 21 during the tension testing process, thereby changing the direction and magnitude of the tension applied to the climbing ladder 1. At the same time, through the cooperation of the second guide groove 13 and the third guide groove 14 with the second guide plate 18 and the indicator plate 22 respectively, the stability and guidance of the tension adjustment frame 11 and the ladder tension plate 12 during the movement can be guaranteed. Meanwhile, the sliding of the indicator plate 22 in the third guide groove 14 can intuitively display the displacement of the tension adjustment frame 11, providing a reference for precise control of the tension.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ladder tension testing device with angle adjustment function, comprising a climbing ladder (1), characterized in that: The climbing ladder (1) is provided with a tension detection component (2) on the outside. The tension detection component (2) includes a support frame (3). The support frame (3) is connected to a tension adjustment component (4). The tension adjustment component (4) includes a first force applicator (5). The first force applicator (5) is installed in the middle of the inner side of the support frame (3). A second force applicator (6) is provided on the bottom of the support frame (3) near the first force applicator (5). The top of the support plate frame (3) is equipped with a first forward and reverse motor (7). The inner side of the support plate frame (3) is provided with a ladder detection groove (8). The middle part of the ladder detection groove (8) is provided with a first guide groove (9). The inside of the first guide groove (9) is connected to a forward and reverse screw (10) through a bearing. The forward and reverse screw (10) and the output end of the first forward and reverse motor (7) are connected by a transmission.

2. The ladder tension testing device with angle adjustment function according to claim 1, characterized in that: The first force applicator (5) and the second force applicator (6) have the same structure. The first force applicator (5) includes a tension adjustment frame (11), and a ladder tension plate (12) is installed on one side of the tension adjustment frame (11).

3. The ladder tension testing device with angle adjustment function according to claim 2, characterized in that: The ladder detection groove (8) has a second guide groove (13) on both sides near the first guide groove (9), and a third guide groove (14) is also provided on both sides of the ladder detection groove (8). Scale marks (15) are also provided on both sides of the two sets of third guide grooves (14).

4. A ladder tension testing device with angle adjustment function according to claim 3, characterized in that: A first guide plate (16) is installed in the middle of one side of the tension adjustment frame (11). The first guide plate (16) is structurally matched with the first guide groove (9). A positive and negative screw hole (17) is opened through the middle of the first guide plate (16). The positive and negative screw hole (17) is threadedly engaged with the positive and negative screw (10). A second guide plate (18) is connected to both sides of the tension adjustment frame (11) near the first guide plate (16). The second guide plate (18) is slidably engaged with the second guide groove (13).

5. A ladder tension testing device with angle adjustment function according to claim 4, characterized in that: The tension adjustment frame (11) has a fourth guide groove (19) in the middle of the side away from the first guide plate (16). The fourth guide groove (19) is connected to an adjustment screw (20) through a bearing. A second forward and reverse motor (21) is installed at one end of the tension adjustment frame (11) near the fourth guide groove (19). The output end of the second forward and reverse motor (21) is connected to the adjustment screw (20) by transmission. Indicator plates (22) are also provided at both ends of the tension adjustment frame (11). The indicator plates (22) are structurally matched with the third guide groove (14). The indicator plates (22) and the third guide groove (14) are in sliding fit.

6. A ladder tension testing device with angle adjustment function according to claim 5, characterized in that: The ladder tension plate (12) has an embedded slot (23) in the middle, which matches the structure of the climbing ladder (1). A third guide plate (24) is connected to one side of the ladder tension plate (12), which matches the structure of the fourth guide groove (19). An adjustment screw hole (25) is provided through the middle of the third guide plate (24), and the adjustment screw hole (25) and the adjustment screw (20) are threaded together.

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