Detection device for actively detecting drawing force of steel wire rope anchor rod of protective net

Abstract

The utility model discloses a detection device for detecting the drawing force of a steel wire rope anchor rod of an active protective net, which comprises a counter-force stool plate, a plurality of grooves are formed in the counter-force stool plate, a stool leg is arranged in each groove, a connecting pull rod is arranged on the counter-force stool plate, a connecting plate is arranged at the lower end of the connecting pull rod, and the counter-force stool plate is provided with a plurality of pull rods. The lower end of the connecting plate is provided with a U-shaped hook end, and the other end of the connecting plate is connected with the detection unit. The stool legs are arranged as detachable components, so that the rectangular stool legs and the trumpet-shaped stool legs can be conveniently replaced, and the adaptability is improved; the lengths of the three stool legs can be changed by adjusting the high-strength nuts, so that the counter-force stool can be kept stable on slopes with different flatness; the end of the U-shaped hook is matched with the connecting pull rod and the connecting plate so that pulling force can be mainly concentrated at the lowest point of the iron hook, the stress direction of the steel wire rope anchor rod is basically consistent with the stress direction of the connecting pull rod, and therefore the phenomenon that the iron hook is straightened due to eccentric stress can be reduced, and safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolt testing technology, and in particular to a testing device for testing the pull-out force of steel wire rope anchor bolts in active protection nets. Background Technology

[0002] With the rapid development of national infrastructure, highway construction projects are increasingly covering mountainous areas, making slope engineering an important part of infrastructure construction. During slope engineering construction, protective measures must be taken to prevent rockfalls and landslides caused by slope excavation, which could lead to accidents.

[0003] Protective measures are divided into active protection and passive protection. Among active protection measures, active protection nets are used more frequently. Active protection nets cover dangerous soil or rock slopes with flexible nets such as steel wire rope nets to prevent the peeling and damage of dangerous blocks or soil on the slope surface, and to prevent slope collapse or landslides. It is an important guarantee for the safety of highway slopes.

[0004] Quality inspection of active protection nets is an important part of the quality assessment of highway slope engineering. Among them, the pull-out force test of the steel wire rope anchor rods in the protection net is a mandatory test in the quality inspection of active protection nets.

[0005] Currently, the pull-out force testing of wire rope anchor bolts mainly uses integrated anchor bolt pull-out instruments, with tie rods and reaction stools as auxiliary tools. However, the tie rods commonly used are mostly multi-mechanical structures, which are bulky and difficult to transport. Furthermore, due to the slope gradient, the insertion angle of the wire rope anchor bolt may not be perpendicular to the ground, causing the reaction stool to slip during measurement, affecting the measurement and posing safety risks. On the other hand, the ends currently used are mostly iron hook ends, which are prone to breakage and straightening under continuous long-term operation due to force displacement, affecting work efficiency and increasing the accident rate. In addition, the commonly used reaction stool tool does not consider the different physical properties of soil and rock slopes, and therefore lacks universal applicability.

[0006] To address this issue, a detection device for detecting the pull-out force of steel wire rope anchor bolts in active protective netting is proposed to solve the problems existing in the current technology. Utility Model Content

[0007] The purpose of this utility model is to address the aforementioned problems by providing a detection device for testing the pull-out force of steel wire rope anchor bolts in active protective netting. This utility model utilizes detachable stool legs as components, allowing for easy replacement of rectangular and flared stool legs, thus better adapting to rock and soil slopes. Simultaneously, by adjusting the high-strength nuts, the lengths of the three stool legs can be changed, ensuring the stability of the reaction stool on slopes with varying flatness. The U-shaped hook end, in conjunction with the connecting rod and connecting plate, concentrates the pulling force primarily at the lowest point of the hook, ensuring the force direction of the steel wire rope anchor bolt is essentially consistent with that of the connecting rod. This reduces the straightening of the hook due to eccentric force, increases the hook's service life, and improves the safety of pull-out force testing. All components are freely detachable and assembleable, increasing the device's portability. To achieve the aforementioned utility model objectives, the technical solution adopted is as follows:

[0008] According to one aspect of the present invention, a detection device for detecting the pull-out force of steel wire rope anchor bolts in active protective netting is provided, comprising a reaction force bench, wherein the reaction force bench has a plurality of grooves, each groove having a foot, the reaction force bench has a connecting rod extending to the lower end of the reaction force bench, the lower end of the connecting rod has a connecting plate, and the lower end of the connecting plate has a U-shaped hook end, the other end of the connecting plate being connected to a detection unit.

[0009] Preferably, the reaction bench has at least three grooves, that is, the reaction bench has at least three legs, each groove is a threaded groove, and each leg has a thread on its top that mates with the threaded groove.

[0010] Preferably, the multiple stool legs can be divided into rectangular stool legs and flared stool legs, and each stool leg is provided with a high-strength nut.

[0011] Preferably, the reaction bench has a circular hole at its center, and the connecting rod extends outward through the circular hole, the diameter of which is larger than the diameter of the connecting rod.

[0012] Preferably, the connecting plate has symmetrical through holes at both ends, and each through hole is a threaded hole. Both ends of the U-shaped hook end are threaded, and both ends of the U-shaped hook end pass through the corresponding through holes and are fixed by connecting nuts.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] This utility model discloses a detection device for testing the pull-out force of steel wire rope anchor bolts in active protective netting. By incorporating detachable stool legs, it is possible to easily replace rectangular and flared stool legs, thus better adapting to rock and soil slopes. Simultaneously, by adjusting the high-strength nuts, the lengths of the three stool legs can be changed, ensuring the stability of the reaction stool on slopes with varying flatness. The U-shaped hook end, in conjunction with the connecting rod and connecting plate, concentrates the pulling force primarily at the lowest point of the hook. The force direction of the steel wire rope anchor bolt is essentially consistent with that of the connecting rod, thereby reducing the straightening of the hook due to eccentric force, increasing the hook's service life, and improving the safety of pull-out force testing. All components are freely detachable and assembleable, increasing the device's portability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the reaction bench of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the connecting rod and the U-shaped hook end of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the trumpet-shaped stool legs and the rectangular stool legs of this utility model;

[0019] In the attached diagram: 1. Reaction bench; 2. Groove; 3. Bench leg; 4. Connecting rod; 5. Connecting plate; 6. U-shaped hook end; 7. High-strength nut; 8. Round hole; 9. Connecting nut. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the utility model, and these aspects can be achieved even without these specific details.

[0021] Please see Figures 1 to 4 This utility model provides a detection device for detecting the pull-out force of steel wire rope anchor bolts in active protection nets. The technical solution is as follows:

[0022] The device includes a reaction bench 1 with multiple grooves 2, each groove 2 containing a leg 3. A connecting rod 4 extends from the bottom of the reaction bench 1, and a connecting plate 5 at the bottom of the connecting rod 4. The connecting plate 5 has a U-shaped hook end 6 at its bottom, and the other end of the connecting plate 5 is connected to a detection unit. The reaction bench 1 has at least three grooves 2, meaning it has at least three legs 3. Each groove 2 is a threaded groove, and each leg 3 has a threaded top that mates with the threaded groove. The legs 3 can be either rectangular or flared. Each leg 3 has a high-strength nut 7, which enhances the connection stability of the entire auxiliary device and increases the overall pressure the device can withstand.

[0023] Depending on the application scenario, the selection of stool legs 3 is made. Rectangular stool legs 3 are used for effective support on rock slopes, while trumpet-shaped stool legs 3, i.e., frustum-shaped stool legs 3, have a larger contact area at the bottom support surface compared to rectangular stool legs 3, and are therefore used for effective support on soil slopes. Through the threaded groove and the threaded engagement on each stool leg 3, the stool leg 3 and the reaction stool plate 1 are detachable. The thread and threaded groove have strong stability. With the detachable design, the connection stability between the stool leg 3 and the reaction stool plate 1 is enhanced, thereby improving the stability of the entire auxiliary detection device.

[0024] Compared to two stool legs 3, three stool legs 3 can better adapt to uneven ground and form a stable support point; no matter how the ground is tilted, the three legs can form a stable triangle, thus avoiding swaying and overturning; the design of multiple grooves 2 and stool legs 3 can effectively distribute the load applied to the stool board, improve the stability of the entire structure, and reduce the risk of tilting or collapse.

[0025] The reaction bench 1 has a circular hole 8 at its center, and the connecting rod 4 extends outward through the circular hole 8. The diameter of the circular hole 8 is larger than the diameter of the connecting rod 4. The diameter of the circular hole 8 is smaller than the diameter of the bottom of the jack, while the diameter of the circular hole 8 is slightly larger than the diameter of the connecting rod 4. This reduces the friction between the connecting rod 4 and the hole wall, avoids energy loss caused by friction, and ensures the flexibility and accuracy of the detection unit during operation. Furthermore, the slightly larger diameter of the circular hole 8 allows the connecting rod 4 to deflect and move within a certain range, which is beneficial to the dynamic response and adaptability of the equipment in actual use.

[0026] The connecting plate 5 has symmetrical through holes at both ends, and each through hole is a threaded hole. The U-shaped hook end 6 has threads at both ends, and the two ends of the U-shaped hook end 6 pass through the corresponding through holes and are fixed by the connecting nut 9. By setting threads at both ends of the U-shaped hook end 6 and cooperating with the through holes as threaded holes, the friction between the U-shaped hook end 6 and the connecting plate 5 is increased, thereby improving the clamping tightness of the fixture and ensuring the normal and safe operation of the pull-out force test. Furthermore, by adjusting the connecting nut 9, the lowest point of the U-shaped hook is ensured to be on the same straight line as the connecting rod 4, so that during the pull-out test, the direction of the tension force on the wire rope anchor is on the same straight line as the center of the pull-out instrument jack, improving the accuracy of the test unit.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A testing device for detecting the pull-out force of steel wire rope anchor bolts in active protective netting, characterized in that, include: The reaction bench (1) has multiple grooves (2) and a bench leg (3) in each groove (2). The reaction bench (1) has a connecting rod (4) that extends to the lower end of the reaction bench (1). The lower end of the connecting rod (4) has a connecting plate (5) and a U-shaped hook end (6). The other end of the connecting plate (5) is connected to the detection unit.

2. The detection device for detecting the pull-out force of steel wire rope anchor bolts in active protection nets according to claim 1, characterized in that: The reaction bench (1) has at least three grooves (2), that is, the reaction bench (1) has at least three legs (3). Each groove (2) is a threaded groove, and each leg (3) has a threaded groove at the top that mates with the threaded groove.

3. The detection device for detecting the pull-out force of steel wire rope anchor bolts in active protection nets according to claim 2, characterized in that: The multiple stool legs (3) can be divided into rectangular stool legs (3) and flared stool legs (3), and each stool leg (3) is provided with a high-strength nut (7).

4. The detection device for detecting the pull-out force of steel wire rope anchor bolts in active protection nets according to claim 1, characterized in that: The reaction bench (1) has a circular hole (8) in the center, and the connecting rod (4) extends outward through the circular hole (8). The diameter of the circular hole (8) is larger than the diameter of the connecting rod (4).

5. The detection device for detecting the pull-out force of steel wire rope anchor bolts in active protection nets according to claim 1, characterized in that: The connecting plate (5) has symmetrical through holes at both ends, and each through hole is a threaded hole. The U-shaped hook end (6) has threads at both ends, and the two ends of the U-shaped hook end (6) pass through the corresponding through holes and are fixed by connecting nuts (9).

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