Device for fastening high-strength bolt anti-sliding test piece

Abstract

The utility model discloses a device for fastening a high-strength bolt anti-sliding test piece, and belongs to the technical field of constructional engineering detection equipment. The device for fastening the high-strength bolt anti-sliding test piece comprises a base, and further comprises a pedestal, the upper end face of which is provided with a clamping groove matched with a bolt head of a bolt of the high-strength bolt anti-sliding test piece; the surrounding plate surrounds the outer side of the pedestal and comprises a pair of high partition plates and a pair of low partition plates, the high partition plates are arranged on the opposite sides of the pedestal, the low partition plates are arranged on the other opposite sides of the pedestal, and the distance between the high partition plates is not smaller than the width of a core plate of the high-strength bolt anti-sliding test piece; the distance between the clamping groove and the top end of the low partition plate is not larger than the distance between the bolt head and a lower side cover plate of the high-strength bolt anti-sliding test piece. The device for fastening the high-strength bolt anti-sliding test piece can prevent the cover plate, the core plate and the bolt from rotating in the process of fastening the bolt of the high-strength bolt anti-sliding test piece.

Description

Technical Field

[0001] This utility model relates to the field of building engineering testing equipment technology, specifically to a device for fastening high-strength bolt anti-slip specimens. Background Technology

[0002] High-strength bolted connections in steel structures are currently widely used in my country's construction industry, especially in prefabricated buildings. High-strength bolted connections apply a huge preload to the connecting plates through the tightening bolts and rely on the friction between the plates to transfer the load. Therefore, the slip resistance coefficient test of high-strength bolted connections is an important indicator for the quality acceptance of high-strength bolted connection projects in steel structures.

[0003] Existing high-strength bolt anti-slip test specimens are mainly designed based on Articles 6.3 and 6.4 of the "Standard for Acceptance of Construction Quality of Steel Structures", Articles 6.2 to 7.3 of the "Technical Specification for High-Strength Bolt Connections in Steel Structures", and Articles 5.1 to 7.3 of the "Determination of Anti-Slip Coefficient of Steel Plate Bolted Joints". The requirements for anti-slip test specimens in the above specifications are consistent. Figure 1 and 2 As shown, a high-strength bolt anti-slip specimen generally includes a core plate, cover plates, bolts, nuts, washers, and a pressure sensor. The core plate is placed in the middle, with two cover plates on the upper and lower sides of the core plate. Bolt holes are provided on the core plate and cover plates, through which the bolt passes. The pressure sensor is located between the bolt head and the cover plate. The nut and washer are connected to the bolt on the opposite side opposite the bolt head. In use, the core plate and cover plates are fixed, the nut is tightened with a wrench, and the tightening force of the bolt is detected by the pressure sensor.

[0004] Due to the small weight and non-fixed nature of the anti-slip specimen, conventional anti-slip tests for high-strength bolts present the following problems during tightening: the torque generated during tightening can cause misalignment between the plates, leading to errors in the results. Furthermore, high-strength bolt anti-slip tests require measuring the bolt preload using a pressure sensor. If the bolt head of the high-strength bolt anti-slip specimen is not fixed, the bolt and pressure sensor will rotate, affecting not only the accuracy of the measurement results but also potentially damaging the pressure sensor. Utility Model Content

[0005] The purpose of this invention is to overcome the problems in the prior art and provide a device for fastening high-strength bolt anti-slip specimens. This device provides a stable platform for the high-strength bolt anti-slip specimens and can fix the bolt head during the tightening process, thereby preventing rotation of the bolts and pressure sensor. This ensures the stability of the high-strength bolt anti-slip specimen during bolt tightening, thus guaranteeing the accuracy of the measurement results and preventing damage to the pressure sensor.

[0006] This utility model provides a device for fastening high-strength bolt anti-slip specimens, including a base, and further comprising:

[0007] A platform is provided on the base, and the upper end face of the platform is provided with a groove that matches the bolt head of the bolt of the high-strength bolt anti-slip specimen;

[0008] A surrounding panel is arranged around the outside of the pedestal. The surrounding panel includes a pair of high partitions and a pair of low partitions. The pair of high partitions are located on one side of the pedestal, and the pair of low partitions are located on the other side of the pedestal. The pair of high partitions are arranged in parallel. The distance between the pair of high partitions is not less than the width of the core plate of the high-strength bolt anti-slip specimen. The distance between the slot and the top of the low partition is not greater than the distance between the bolt head and the lower cover plate of the high-strength bolt anti-slip specimen.

[0009] Preferably, the base is provided with a baffle, which is vertically arranged on one side of the high partition on the base, and the height of the baffle is higher than the height of the high partition.

[0010] Preferably, the baffle is an L-shaped baffle, and the bottom end of the baffle is fixedly connected to the base.

[0011] Preferably, one side wall of the baffle is perpendicular to the high partition.

[0012] Preferably, the base is provided with a plurality of through holes, which surround the pedestal and are located on the periphery of the base.

[0013] Preferably, the base is available in various specifications, and the size of the slots on each specification of the base is different. ， Each type of base has a slot that matches the bolt head of a bolt of a different size.

[0014] Preferably, the high partition and the low partition have the same length, and the length of both the high partition and the low partition is the same as the width of the core plate.

[0015] Preferably, the height of the high partition is equal to the sum of the thickness of the bolt head, the two side cover plates, the core plate, the two gaskets, and the pressure sensor of the high-strength bolt anti-slip specimen.

[0016] Preferably, the thickness of both the high partition and the low partition is not less than 5 mm.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The device for fastening high-strength bolt anti-slip specimens provides a stable platform for the high-strength bolt anti-slip specimens. During the process of fastening the bolts of the high-strength bolt anti-slip specimens, the bolt head is fixed, thereby preventing the bolts and pressure sensors of the high-strength bolt anti-slip specimens from rotating. This ensures that the high-strength bolt anti-slip specimens remain stable during the bolt fastening process, thus not only ensuring the accuracy of the measurement results but also avoiding damage to the pressure sensor.

[0018] By incorporating a baffle, the reaction arm of the electric torque wrench is pressed against it, preventing displacement of the cover plate or core plate due to hand movement during bolt tightening. This ensures the stability of the high-strength bolt anti-slip specimen during bolt tightening and further prevents damage to the pressure sensor due to rotation. The L-shaped baffle enhances its bending strength, preventing the wrench from bending it and thus preventing the electric torque wrench handle from slipping off. Positioning one side of the baffle perpendicular to the high partition increases the contact area between the electric torque wrench handle and the baffle, preventing damage from excessive pressure. The availability of various sized stands, each with different slot sizes, accommodates different bolt sizes, expanding the overall applicability of the device. By setting the lengths of the high and low partitions to be the same as the width of the core plate, the two sides of the high-strength bolt anti-slip specimen can be fitted to the inner walls of the high partitions on both sides, thereby further preventing the cover plate or core plate from shifting and thus further avoiding damage to the pressure sensor caused by rotation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the high-strength bolt anti-slip specimen of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the high-strength bolt anti-slip specimen of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Core board, 2. Cover plate, 3. Bolt, 4. Nut, 5. Washer, 6. Pressure sensor, 7. Bolt head, 8. Base, 9. Platform, 10. Enclosure, 11. Baffle, 12. Through hole, 13. High partition, 14. Low partition, 15. Slot. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-3 The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

[0025] like Figures 1-3As shown, the present invention provides a device for fastening a high-strength bolt anti-slip specimen, including a base 8, a platform 9, and a surrounding plate 10. The platform 9 is disposed on the base 8, and the upper end surface of the platform 9 is provided with a groove 15 that matches the bolt head 7 of the bolt 3 of the high-strength bolt anti-slip specimen. The surrounding plate 10 surrounds the outside of the platform 9, and the surrounding plate 10 includes a pair of high partitions 13 and a pair of low partitions 14. The pair of high partitions 13 are disposed on one side of the platform 9, and the pair of low partitions 14 are disposed on the other side of the platform 9. The pair of high partitions 13 are arranged in parallel, and the distance between the pair of high partitions 13 is not less than the width of the core plate 1 of the high-strength bolt anti-slip specimen. The distance between the groove 15 and the top of the low partition 14 is not greater than the distance between the bolt head 7 and the lower cover plate 2 of the high-strength bolt anti-slip specimen.

[0026] The working principle of the above embodiments is briefly described below:

[0027] In use, the high-strength bolt anti-slip specimen is placed between two high partitions 13, and the bolt head 7 of the high-strength bolt anti-slip specimen is secured in the slot 15 on the base 9. A wrench is then attached to the nut of the high-strength bolt anti-slip specimen, and the nut is tightened, thus applying a preload to the bolt 3 of the high-strength bolt anti-slip specimen. During this process, the high partitions 13 on both sides of the high-strength bolt anti-slip specimen provide support, preventing the nut from causing the cover plate 2 and core plate 1 to rotate during tightening, and also preventing misalignment of the cover plate 2 or core plate 1, thereby ensuring the stability of the high-strength bolt anti-slip specimen during bolt 3 tightening.

[0028] This utility model discloses a device for fastening high-strength bolt anti-slip specimens. It provides a stable platform for the high-strength bolt anti-slip specimens and can fix the bolt head 7 of the bolt 3 during the tightening process of the bolt 3 of the high-strength bolt anti-slip specimens. This prevents the bolt 7 of the high-strength bolt anti-slip specimens and the pressure sensor 6 from rotating, ensuring that the high-strength bolt anti-slip specimens remain stable during the tightening process of the bolt 7. This not only ensures the accuracy of the measurement results but also avoids damage to the pressure sensor 6.

[0029] Based on the above embodiments, in order to further ensure the stability of the high-strength bolt anti-slip specimen during the tightening of bolt 3, and to further avoid damage to the pressure sensor caused by rotation.

[0030] like Figure 1 As shown, the base 8 is provided with a baffle 11, which is vertically arranged on one side of the high partition 13 on the base 8, and the height of the baffle 11 is higher than the height of the high partition 13.

[0031] By setting baffle 11, when using an electric torque wrench to tighten the nut of the high-strength bolt anti-slip specimen, the reaction arm of the electric torque wrench needs to be pressed against baffle 11. The baffle 11 can provide continuous support force to the electric torque wrench, ensuring the smooth progress of the bolt 3 tightening process.

[0032] As a preferred option, such as Figure 1 As shown, the baffle 11 is an L-shaped baffle 11, and the bottom end of the baffle 11 is fixedly connected to the base 8. By setting the baffle 11 as an L-shaped baffle 11, the bending strength of the baffle 11 can be improved, thereby preventing the wrench from bending the baffle 11, thus ensuring the smooth progress of the bolt 3 tightening process.

[0033] As a preferred option, such as Figure 1 As shown, one side wall of the baffle 11 is perpendicular to the high partition 13. Setting one side wall of the baffle 11 to be perpendicular to the high partition 13 increases the contact area between the handle of the electric torque wrench and the baffle 11, thereby making the process of applying torque force by the electric torque wrench more stable and preventing damage to the baffle 11.

[0034] As a preferred option, such as Figure 1 As shown, the base has multiple through holes 12, which surround the platform 9 and are located on the periphery of the base 8. By providing multiple through holes 12, the entire device can be fixed in a stable location, such as a steel beam with bolt holes, thereby preventing the device from rotating during the fastening process.

[0035] As a preferred option, such as Figures 1-3 As shown, the base 9 has multiple specifications, each with a different size of slot 15, and each slot 15 is matched with bolt heads 7 of different sizes of bolts 3. By setting multiple specifications of base 9, each with a different size of slot 15, it can accommodate bolts 3 of different specifications, thereby improving the applicability of the entire device.

[0036] As a preferred option, such as Figure 1 As shown, the high partition 13 and the low partition 14 have the same length, and the lengths of both the high partition 13 and the low partition 14 are the same as the width of the core plate 1. By setting the lengths of the high partition 13 and the low partition 14 to be the same as the width of the core plate 1, the two sides of the high-strength bolt anti-slip specimen can be fitted to the inner walls of the high partition 13 on both sides, thereby further preventing the cover plate 2 or the core plate 1 from shifting during the tightening process of the bolt 3 of the high-strength bolt anti-slip specimen.

[0037] As a preferred option, such as Figures 1-3As shown, the height of the high partition 13 is equal to the sum of the thicknesses of the bolt head 7, the two side cover plates 2, the core plate 1, the two gaskets 5, and the pressure sensor of the high-strength bolt anti-slip specimen. Setting the height of the high partition 13 to the sum of the thicknesses of the bolt head 7, the two side cover plates 2, the core plate 1, the two gaskets 5, and the pressure sensor ensures that the high partition 13 can firmly clamp the high-strength bolt anti-slip specimen, preventing it from slipping off from above the high partition 13.

[0038] As a preferred option, such as Figure 1 As shown, the thickness of both the high partition 13 and the low partition 14 is not less than 5 mm. Setting the thickness of the high partition 13 and the low partition 14 to not less than 5 mm ensures that the high partition 13 and the low partition 14 have sufficient strength to prevent damage to the surrounding plate 10 during the tightening process of the high-strength bolt anti-slip specimen.

[0039] Although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for fastening high-strength bolt anti-slip specimens, comprising a base (8), characterized in that, Also includes: A platform (9) is provided on the base (8), and the upper end face of the platform (9) is provided with a groove (15) that matches the bolt head (7) of the bolt (3) of the high-strength bolt anti-slip specimen; A surrounding plate (10) surrounds the outside of the pedestal (9). The surrounding plate (10) includes a pair of high partitions (13) and a pair of low partitions (14). The pair of high partitions (13) are located on one side of the pedestal (9), and the pair of low partitions (14) are located on the other side of the pedestal (9). The pair of high partitions (13) are arranged in parallel. The distance between the pair of high partitions (13) is not less than the width of the core plate (1) of the high-strength bolt anti-slip specimen. The distance between the slot (15) and the top of the low partition (14) is not greater than the distance between the bolt head (7) and the lower cover plate (2) of the high-strength bolt anti-slip specimen.

2. The device for fastening high-strength bolt anti-slip specimens as described in claim 1, characterized in that, The base (8) is provided with a baffle (11), which is vertically arranged on one side of the high partition (13) on the base (8), and the height of the baffle (11) is higher than the height of the high partition (13).

3. The device for fastening high-strength bolt anti-slip specimens as described in claim 2, characterized in that, The baffle (11) is an L-shaped baffle (11), and the bottom end of the baffle (11) is fixedly connected to the base (8).

4. The device for fastening high-strength bolt anti-slip specimens as described in claim 2, characterized in that, One side wall of the baffle (11) is perpendicular to the high partition (13).

5. The device for fastening high-strength bolt anti-slip specimens as described in claim 1, characterized in that, The base is provided with multiple through holes (12), which surround the pedestal (9) and are located on the periphery of the base (8).

6. The device for fastening high-strength bolt anti-slip specimens as described in claim 1, characterized in that, The base (9) comes in various specifications, and the size of the slot (15) is different for each specification of base (9). ， The slots (15) of each type of base (9) are matched with the bolt heads (7) of bolts (3) of different sizes.

7. The device for fastening high-strength bolt anti-slip specimens as described in claim 1, characterized in that, The high partition (13) and the low partition (14) have the same length, and the lengths of both the high partition (13) and the low partition (14) are the same as the width of the core plate (1).

8. The device for fastening high-strength bolt anti-slip specimens as described in claim 1, characterized in that, The height of the high partition (13) is equal to the sum of the thickness of the bolt head (7), the two side cover plates (2), the core plate (1), the two gaskets (5), and the pressure sensor of the high-strength bolt anti-slip specimen.

9. The device for fastening high-strength bolt anti-slip specimens as described in claim 1, characterized in that, The thickness of both the high partition (13) and the low partition (14) is not less than 5 mm.

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