Multipurpose anchor bolt drawing connecting device
By designing a multi-purpose anchor pull-out connection device, combined with a carbon fiber bond strength pull-out tester and a self-tapping screw clamp, the problem of testing the pull-out resistance of self-tapping screws, plastic expansion bolts, or low-load-bearing mechanical anchors was solved, enabling effective pull-out tests on these anchors and meeting the testing needs of outdoor advertising facilities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-31
AI Technical Summary
Existing technologies lack instruments and equipment capable of testing the pull-out resistance of self-tapping screws, plastic expansion bolts, or low-load-bearing mechanical anchors, leaving a technological gap, especially in the field of outdoor advertising facility testing.
A multi-purpose anchor pull-out connection device was designed, including a connector, a self-tapping screw clamp, and an anchor bolt adapter clamp. By combining it with a carbon fiber bond strength pull-out tester, a pull-out test of a low-load-bearing mechanical anchor bolt can be performed, and a pull-out test of a self-tapping screw can be performed using the self-tapping screw clamp.
It has enabled effective pull-out tests on low-load-bearing mechanical anchors and self-tapping screws, filling a gap in existing technology and meeting the testing needs of outdoor advertising facilities.
Smart Images
Figure CN224066476U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering testing technology, and more specifically to a multi-purpose anchor bolt pull-out connection device. Background Technology
[0002] Anchor bolts are a general term for all post-anchoring components, encompassing a wide range. They are classified by raw materials into metal anchor bolts and non-metal anchor bolts, and by anchoring mechanism into expansion anchor bolts, borehole anchor bolts, bonded anchor bolts, concrete screws, driven nails, concrete nails, etc. Before construction, their tensile strength needs to be tested to ensure the overall stability of the building. The anchor bolt pull-out test is a method used to test the tensile strength of anchor bolts in concrete or rock substrates, and is widely used in construction engineering, bridges, tunnels, and other fields.
[0003] Currently, there is no instrumentation available for testing the pull-out resistance of self-tapping screws, plastic expansion bolts, or low-load-bearing mechanical anchors. Common anchor pull-out testers are mostly hydraulic through-type testers, with a minimum range of 10 tons. The fundamental reason for this situation is that self-tapping screws, plastic expansion bolts, or low-load-bearing mechanical anchors are rarely used in conventional construction engineering. With increasing public safety requirements in buildings, a technological gap has emerged in the field of testing outdoor advertising facilities. Existing pull-out testers, due to limitations in range and connection methods, cannot perform pull-out resistance testing on self-tapping screws, plastic expansion bolts, or low-load-bearing mechanical anchors used in outdoor advertising facility installations.
[0004] Therefore, how to provide a connection device that can be used to pull out self-tapping screws, plastic expansion bolts or low-load mechanical anchors using a carbon fiber bond strength pull-out tester, and realize small-range pull-out tests, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the present invention provides a multi-purpose anchor pull-out connection device, which can realize the pull-out test of low load-bearing mechanical anchors by connecting the connector head to the anchor end of the carbon fiber bond strength pull-out tester, and can also meet the pull-out test of self-tapping screws and plastic expansion bolts by using the self-tapping screw clamp.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A multi-purpose anchor bolt pull-out connection device for connecting a pull-out instrument and an anchor bolt, including a connector, a self-tapping screw clamp and / or an anchor bolt adapter clamp;
[0008] The connector has a slot on one side wall that can be engaged with the anchoring end of the pull-out instrument, and an internal thread on the other end that can be screwed into the anchor bolt.
[0009] The self-tapping screw clamp includes a clamp body and a first adapter screw. One end of the first adapter screw is vertically fixed to one end face of the clamp body, and the other end is detachably screwed to the internal thread. An anchoring groove is provided on the side wall of the clamp body opposite to the first adapter screw to engage the nut end of the self-tapping screw.
[0010] The beneficial effects of this utility model are that the connector can be clamped to the carbon fiber bonding strength pull-out tester, and the connector can be anchored to the anchor bolt to conduct a pull-out test on the low load-bearing mechanical anchor bolt; the self-tapping screw clamp can be screwed to the connector, and after the connection is completed, the self-tapping screw clamp can be used to conduct a pull-out test on the self-tapping screw.
[0011] Preferably, the end of the connector away from the bayonet has an assembly cavity, and the connector has an internal thread relative to the inner wall of the assembly cavity.
[0012] Preferably, the connector has a window on its middle sidewall, which connects the bayonet and the assembly cavity. The window, in conjunction with the bayonet, facilitates insertion into the anchoring end of the pull-out tester. Furthermore, when the anchor bolt is excessively long, the window facilitates the connection between the connecting device and the anchor bolt, ensuring effective pull-out testing of the anchor bolt.
[0013] Preferably, the shape of the anchoring groove is adapted to the nut end of the self-tapping screw, and the anchoring groove is connected to the end face of the clamp body away from the first adapter screw.
[0014] Preferably, the device further includes an anchor bolt adapter clamp, which comprises an adapter body and a second adapter screw. One end of the second adapter screw is vertically fixed to one end face of the adapter body, and the other end is detachably screwed to the internal thread. An anchoring cavity is formed at the other end of the adapter body, and an adapter internal thread is provided on the inner wall of the anchoring cavity relative to the adapter body. This adapter internal thread can be screwed to the anchor bolt. The anchor bolt adapter clamp is screwed to the connector via the second adapter screw, and the anchor bolt can be screwed in via the adapter internal thread. Pull-out tests can be performed on anchor bolts of different models using the anchor bolt adapter clamp.
[0015] Preferably, the connector, the self-tapping screw clamp, and the anchor bolt adapter clamp are all made of low-carbon steel in one piece. The low-carbon steel material ensures that the connection device has good compressive and tensile strength.
[0016] Preferably, the adapter body is a hexahedral prism, and the internal thread of the adapter is adapted to anchor bolts of size M6 to M16.
[0017] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a multi-purpose anchor bolt pull-out connection device. The connector is snapped into the pull-out tester. The connector can be used to perform anchor bolt pull-out tests or to screw a self-tapping screw clamp to perform self-tapping screw pull-out tests, filling the gap in the testing of the pull-out resistance of self-tapping screws, plastic expansion bolts or low-load-bearing mechanical anchor bolts. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0019] Figure 1 Front view of the connecting device provided by this utility model;
[0020] Figure 2 Front view of the connecting device in Embodiment 2 of this utility model
[0021] Figure 3 A cross-sectional view of the connector provided by this utility model;
[0022] Figure 4 Top view of the connector provided by this utility model;
[0023] Figure 5 Formal drawing of the self-tapping screw clamp provided by this utility model;
[0024] Figure 6 A cross-sectional view of the anchor bolt adapter clamp provided by this utility model.
[0025] in,
[0026] 1-; Connector; 11- Internal thread; 12- Bayonet; 13- Window;
[0027] 2-Self-tapping screw clamp; 21-Clamp body; 22-First adapter screw; 23-Anchor groove;
[0028] 3-Anchor bolt adapter clamp; 31-Adapter body; 32-Second adapter screw; 33-Adapter internal thread. Detailed Implementation
[0029] 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.
[0030] Example 1:
[0031] See appendix Figure 1 , 3 4, 5, This utility model embodiment discloses a multi-purpose anchor bolt pull-out connection device for connecting a pull-out instrument and an anchor bolt, including a connector 1 and a self-tapping screw clamp 2;
[0032] One end of the connector 1 has a bayonet 12 on its side wall that can be engaged with the anchoring end of the pull-out instrument, and the other end has an internal thread 11 that can be screwed into the anchor bolt.
[0033] The self-tapping screw clamp 2 includes a clamp body 21 and a first adapter screw 22. One end of the first adapter screw 22 is vertically fixed to one end face of the clamp body 21, and the other end is detachably screwed to the internal thread 11. An anchoring groove 23 is provided on the side wall of the clamp body 21 to engage the nut end of the self-tapping screw.
[0034] like Figure 1 and 2 As shown, the end of the connector 1 away from the bayonet 12 has an assembly cavity, and the connector 1 has an internal thread 11 on the inner wall of the assembly cavity. The connector can be clamped and fixed to the anchoring end of the carbon fiber bond strength pull-out tester (maximum capacity 1t) through the bayonet. After being bolted to the external thread of the anchor bolt through the internal thread, a pull-out test can be performed to meet the pull-out resistance test of plastic expansion bolts or low load-bearing mechanical anchor bolts.
[0035] See Figure 3 The self-tapping screw clamp can be bolted to the internal thread of the connector via the first adapter screw, and the anchoring groove on the clamp body can accommodate the nut end of the self-tapping screw, thereby realizing the pull-out resistance test of the self-tapping screw.
[0036] To further optimize the above technical solution and ensure that the connecting device has sufficient compressive and tensile strength, both the connector 1 and the self-tapping screw clamp 2 are made of low carbon steel in one piece.
[0037] In some other specific embodiments, a window 13 is provided on the middle side wall of the connector 1, and the window 13 is connected to the bayonet 12 and the assembly cavity respectively.
[0038] The connector is cylindrical with a window in the middle. When the exposed length of the anchor bolt is long, the excessively long part can be inserted into the window to ensure effective testing of the anchor bolt's pull-out resistance.
[0039] To further optimize the above technical solution, the shape of the anchoring groove 23 is adapted to the nut end of the self-tapping screw, and the anchoring groove 23 is connected to the end face of the clamp body 21 away from the first adapter screw 22.
[0040] In the self-tapping screw pull-out test chamber, the clamp body of the self-tapping screw fixture can be connected to the nut end of the self-tapping screw from one side through the anchor groove.
[0041] Example 2:
[0042] See appendix Figure 2 and 6 This utility model discloses a multi-purpose anchor bolt pulling connection device for connecting a pulling instrument and an anchor bolt. It includes a connector 1 and an anchor bolt adapter 3. One end of the anchor bolt adapter 3 is bolted to the internal thread 11, and the other end can be screwed to the anchor bolt.
[0043] In this embodiment, the anchor bolt adapter 3 includes an adapter body 31 and a second adapter screw 32. One end of the second adapter screw 32 is vertically fixed to one end face of the adapter body 31, and the other end is detachably screwed to the internal thread 11. The other end of the adapter body 31 is provided with an anchoring cavity. The adapter body 31 is provided with an adapter internal thread 33 on the inner wall of the anchoring cavity. The adapter internal thread 33 can be screwed to the anchor bolt.
[0044] See Figure 4 The anchor bolt adapter clamp can be bolted to the internal thread of the connector via the second adapter screw, and then bolted to the anchor bolt via the adapter internal thread. This allows for pull-out tests on different types of anchor bolts.
[0045] To further optimize the above technical solution, the adapter body 31 is a hexahedral prism, and the adapter internal thread 33 is compatible with anchor bolts of sizes M6 to M16. Pull-out tests on anchor bolts of different specifications can be performed by changing the anchor bolt adapter clamps with different inner diameters. The hexahedral prism shape of the adapter body allows for easy tightening of the anchor bolt adapter clamp and connector using a wrench.
[0046] To further optimize the above technical solution, the anchor bolt adapter 3 is made of low-carbon steel in one piece.
[0047] Example 3:
[0048] This invention discloses a multi-purpose anchor bolt pull-out connection device for connecting a pull-out instrument and an anchor bolt. It adopts the connector 1, anchor bolt adapter 3 and self-tapping screw clamp 2 from Embodiments 1 and 2. In this embodiment, the connector 1, anchor bolt adapter 3 and self-tapping screw clamp 2 are coaxial and bolted together in sequence.
[0049] The anchor bolt adapter clamp is bolted to the internal thread of the connector via a second adapter screw, and the self-tapping screw clamp is bolted to the adapter internal thread on the anchor bolt clamp via a first adapter screw. When the head of the self-tapping screw is deep enough that a pull-out test cannot be performed using only the connector and self-tapping screw clamp, this connection method is used to extend the connector via the anchor bolt adapter clamp to meet the pull-out test requirements.
[0050] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A multi-purpose anchor pullout connection device for connecting a pullout apparatus and an anchor, characterized in that, The connecting head (1), the self-tapping screw clamp (2) and / or the anchor bolt adapter clamp (3) are included. The side wall of one end of the connecting head (1) is provided with a bayonet (12) which can be connected with the anchoring end of the pull-out tester, and the other end is provided with an internal thread (11); the self-tapping screw clamp (2) includes a clamp body (21) and a first adapter screw (22), one end of the first adapter screw (22) is fixed perpendicularly on one end face of the clamp body (21), and the other end is detachably screwed with the internal thread (11); the side wall opposite to the first adapter screw (22) of the clamp body (21) is provided with an anchoring groove (23) for clamping the nut end of the self-tapping screw; And / or the anchor bolt adapter clamp (3) is connected with the internal thread (11) at one end, and is screwed with the anchor bolt at the other end.
2. A multi-purpose anchor pull tie device according to claim 1, wherein, The end of the connecting head (1) away from the bayonet (12) is provided with an assembly cavity, and the internal wall of the connecting head (1) opposite to the assembly cavity is provided with the internal thread (11).
3. A multi-purpose anchor pull tie device according to claim 2, wherein, The middle side wall of the connecting head (1) is provided with a window (13), and the window (13) respectively communicates with the bayonet (12) and the assembly cavity.
4. A multi-purpose anchor pull tie device according to claim 1, wherein, The shape of the anchoring groove (23) is adapted to the nut end of the self-tapping screw, and the anchoring groove (23) communicates to the end face of the clamp body (21) away from the first adapter screw (22).
5. A multi-purpose anchor pull tie device according to claim 1, wherein, The anchor bolt adapter clamp (3) includes an adapter body (31) and a second adapter screw (32), one end of the second adapter screw (32) is fixed perpendicularly on one end face of the adapter body (31), and the other end is detachably screwed with the internal thread (11); the other end of the adapter body (31) is provided with an anchoring cavity, and the internal wall of the adapter body (31) opposite to the anchoring cavity is provided with an adapter internal thread (33), and the adapter internal thread (33) can be screwed with the anchor bolt.
6. A multi-purpose anchor pull tie device according to claim 5, wherein, The connecting head (1), the self-tapping screw clamp (2) and the anchor bolt adapter clamp (3) are integrally made of low carbon steel.
7. A multi-purpose anchor pull tie device according to claim 5, wherein, The adapter body (31) is a hexagonal prism, and the adapter internal thread (33) is adapted to M6-M16 type anchor bolts. The adapter body (31) is a hexagonal prism, and the adapter internal thread (33) is adapted to M6-M16 type anchor bolts.