A mechanical anchor with an expanded base

Abstract

The utility model relates to the technical fields of anchor equipment discloses a bottom expanding mechanical anchor bolt, including the bolt body, the inner surface fixed mounting of bolt body has the bolt head fixed establishment, the bolt head fixed establishment includes the expansion assembly, the expansion assembly includes the rotation groove, the rotation groove is through the outside surface of bolt body and is established, the inner surface rotation of rotation groove is installed with the rotating rod, the outside surface fixed mounting of rotating rod has the expansion top block. This bottom expanding mechanical anchor bolt, through the spanner rotation hexagonal block, hexagonal block is driven to the top rod and moves down through the threaded rod, the top rod drives the conical top block and moves down, the conical top block is inserted among two expansion top blocks through the inclined slot, then the expansion top block is moved outward by the conical top block and is expanded, makes the expansion top block top to the annular groove, when needing to take out the anchor bolt from the concrete, the user uses the spanner reverse rotation hexagonal block, hexagonal block is driven to the top rod and moves up through the threaded rod, makes the top rod drive the conical top block and move up.

Description

Technical Field

[0001] This utility model relates to the technical field of anchor bolt equipment, and in particular to a mechanical anchor bolt with an expanded bottom. Background Technology

[0002] Expanded-base mechanical anchors are high-strength fasteners used for fixing subway tracks. They utilize mechanical expansion technology (such as expansion sleeves or wedge structures) to create an anchoring node at the bottom of a pre-drilled hole, providing significantly higher tensile and shear resistance than ordinary anchors. Their features include: the use of corrosion-resistant steel or coatings to adapt to damp underground environments; precise expansion during installation through torque control to ensure a tight fit with the concrete substrate; suitability for dynamic loads and vibration conditions; and long-term track stability.

[0003] When using a mechanical anchor bolt, the conical expansion head moves upward to make close contact with the locking blade. This process can cause the locking blade to break, affecting the anchor bolt's tensile strength. Additionally, mechanical anchor bolts need to be replaced during use. When replacing the anchor bolt, the internal screw needs to be knocked downward to disengage the conical expansion head from the locking blade. Then, a special tool can be used to remove it. This process is time-consuming and laborious, and the internal locking blade requires considerable force to reset. Utility Model Content

[0004] In view of the problem that when the existing conical expansion head is in a tight state with the locking blade, the locking blade may break during the expansion process, which affects the tensile strength of the anchor bolt and also affects the removal of the anchor bolt, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an expanded-base mechanical anchor bolt, which aims to change the traditional anchor bolt expansion method, improve the anchor bolt's tensile strength, and allow the anchor bolt to be quickly removed.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a mechanical anchor bolt with an expanded base, comprising a bolt body, wherein a bolt head fixing mechanism is fixedly installed on the inner surface of the bolt body;

[0007] The bolt head fixing mechanism includes an expansion assembly, which includes a rotating groove that extends through the outer surface of the bolt body. A rotating rod is rotatably mounted on the inner surface of the rotating groove, and an expansion top block is fixedly mounted on the outer surface of the rotating rod.

[0008] As a preferred embodiment of the expanded bottom mechanical anchor bolt of this utility model, the expansion assembly further includes an inclined groove, which is formed on the top of the expansion block.

[0009] As a preferred embodiment of the expanded-base mechanical anchor bolt of this utility model, the bolt head fixing mechanism further includes a driving component, the driving component includes a sliding groove, the sliding groove is formed on the inner surface of the bolt body, a sliding strip is slidably installed on the inner surface of the sliding groove, a top rod is fixedly installed on the outer surface of the sliding strip, and a conical top block is fixedly installed at the bottom end of the top rod.

[0010] As a preferred embodiment of the expanded-base mechanical anchor bolt of this utility model, the driving assembly further includes a threaded rod, a washer is rotatably mounted on the outer surface of the threaded rod, a hexagonal block is fixedly mounted on the top of the threaded rod, and a pull bracket is fixedly mounted on the top of the hexagonal block.

[0011] As a preferred embodiment of the expanded-base mechanical anchor bolt of this utility model, wherein: the outer surface of the threaded rod is threadedly connected to the inner surface of the top rod, the top end of the threaded rod penetrates through the bolt body and extends to the outside of the bolt body, and the outer surface of the threaded rod is rotatably connected to the outer surface of the bolt body by the inner surface of the bolt body.

[0012] As a preferred embodiment of the expanded bottom mechanical anchor bolt of this utility model, the bolt head fixing mechanism further includes a spring-loaded component, the spring-loaded component includes a groove, the groove is formed on the outer surface of the expansion top block and the bolt body, and an elastic ring is engaged and installed on the inner surface of the groove.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. This utility model improves the anchor bolt's fixing strength by using the bolt body and rotating groove in conjunction with the rotating rod and expansion block, the expansion block and inclined groove in conjunction with the conical block and top rod, and the top rod and threaded rod in conjunction with the hexagonal block. This design pushes the expansion block out and into the annular groove, thereby greatly improving the anchoring force and ensuring a more reliable anchoring effect.

[0015] 2. This utility model adds a detachable anchor bolt design. Through the cooperation of the bolt body and the conical top block with the slot and the elastic ring, the cooperation of the conical top block and the top rod with the threaded rod and the hexagonal block, and the cooperation of the hexagonal block and the tie rod, the expansion top block can be reset, so that the anchor bolt loses its fixed connection with the anchor hole, making it convenient and quick to remove the anchor bolt from the anchor hole. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the expanded-base mechanical anchor bolt of this utility model;

[0017] Figure 2 For the expanded-base mechanical anchor bolt of this utility model Figure 1 Schematic diagram of the enlarged structure of A in the middle;

[0018] Figure 3 This is a three-dimensional cross-sectional view of the bolt body of the expanded-base mechanical anchor bolt of this utility model;

[0019] Figure 4 For the expanded-base mechanical anchor bolt of this utility model Figure 3 Schematic diagram of the enlarged structure of B.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Bolt body; 2. Bolt head fixing mechanism; 21. Expansion assembly; 211. Rotating groove; 212. Rotating rod; 213. Expansion top block; 214. Inclined groove; 22. Drive assembly; 221. Sliding groove; 222. Sliding bar; 223. Top rod; 224. Conical top block; 225. Threaded rod; 226. Washer; 227. Hexagonal block; 228. Tie bracket; 23. Rebound assembly; 231. Slot; 232. Elastic ring. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Example 1

[0024] Reference Figures 1-4 This is the first embodiment of the present invention, which provides an expanded bottom mechanical anchor bolt. The expanded bottom mechanical anchor bolt includes a bolt body 1, and a bolt head fixing mechanism 2 is fixedly installed on the inner surface of the bolt body 1.

[0025] The bolt head fixing mechanism 2 includes an expansion component 21, which includes a rotating groove 211. The rotating groove 211 extends through the outer surface of the bolt body 1. A rotating rod 212 is rotatably mounted on the inner surface of the rotating groove 211, and an expansion top block 213 is fixedly mounted on the outer surface of the rotating rod 212.

[0026] The expansion assembly 21 also includes a sloping groove 214, which is formed on the top of the expansion top block 213.

[0027] The bolt head fixing mechanism 2 also includes a drive assembly 22, which includes a slide groove 221. The slide groove 221 is opened on the inner surface of the bolt body 1. A slide bar 222 is slidably installed on the inner surface of the slide groove 221. A top rod 223 is fixedly installed on the outer surface of the slide bar 222. A conical top block 224 is fixedly installed at the bottom end of the top rod 223.

[0028] The drive assembly 22 also includes a threaded rod 225, on the outer surface of which a washer 226 is rotatably mounted, and a hexagonal block 227 is fixedly mounted on the top of the threaded rod 225. A tie rod 228 is fixedly mounted on the top of the hexagonal block 227.

[0029] The outer surface of the threaded rod 225 is threadedly connected to the inner surface of the push rod 223. The top end of the threaded rod 225 passes through the bolt body 1 and extends to the outside of the bolt body 1. The outer surface of the threaded rod 225 is rotatably connected to the outer surface of the bolt body 1 by the inner surface of the bolt body 1.

[0030] During use, the wrench rotates the hexagonal block 227, which drives the push rod 223 to move downward through the threaded rod 225. The push rod 223 drives the conical push block 224 to move downward. The conical push block 224 is inserted between the two expansion push blocks 213 through the inclined groove 214. Then, the expansion push block 213 is expanded by the outward movement of the conical push block 224, causing the expansion push block 213 to push into the annular groove.

[0031] Example 2

[0032] Reference Figure 1 and Figure 2 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the bolt fixing mechanism 2 further includes a spring-loaded component 23. The spring-loaded component 23 includes a slot 231. The slot 231 is formed on the outer surface of the expansion top block 213 and the bolt body 1. An elastic ring 232 is installed on the inner surface of the slot 231.

[0033] During use, the hexagonal block 227 is rotated in the opposite direction using a wrench. The hexagonal block 227 drives the push rod 223 to move upward through the threaded rod 225, which in turn drives the conical top block 224 to move upward. Then, the elastic ring 232 uses its elasticity to drive the conical top block 224 to move inward for reset. Finally, the user removes the bolt body 1 from the drill hole using the puller 228.

[0034] The remaining structure is the same as that in Example 1.

[0035] Based on embodiments 1-2, the working principle of this utility model is as follows: The user drills a hole in the ground and creates an annular groove within the hole. Then, the bolt 1 is inserted into the groove. A wrench is used to rotate the hexagonal block 227. The hexagonal block 227, through the threaded rod 225, drives the push rod 223 downwards. The push rod 223 drives the conical push block 224 downwards. The conical push block 224 is inserted between two expansion push blocks 213 through the inclined groove 214. Then, the expansion push blocks 213 are subjected to the force of the conical push block 224. The expansion block 213 is pushed into the annular groove by moving outwards. When it is necessary to remove the anchor bolt from the concrete, the user uses a wrench to rotate the hexagonal block 227 in the opposite direction. The hexagonal block 227 drives the push rod 223 to move upwards through the threaded rod 225, which in turn drives the conical block 224 to move upwards. Then, the elastic ring 232 uses elasticity to drive the conical block 224 to move inwards for reset. Then, the user uses the puller 228 to remove the bolt body 1 from the borehole.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A type of expanded-base mechanical anchor bolt, comprising a bolt body (1), characterized in that: The inner surface of the plug body (1) is fixedly installed with a plug head fixing mechanism (2); The bolt head fixing mechanism (2) includes an expansion assembly (21), the expansion assembly (21) includes a rotating groove (211), the rotating groove (211) is opened through the outer surface of the bolt body (1), a rotating rod (212) is rotatably installed on the inner surface of the rotating groove (211), and an expansion top block (213) is fixedly installed on the outer surface of the rotating rod (212).

2. The expanded-base mechanical anchor bolt according to claim 1, characterized in that: The expansion assembly (21) also includes a sloping groove (214) which is formed on the top of the expansion top block (213).

3. The expanded-base mechanical anchor bolt according to claim 1, characterized in that: The bolt head fixing mechanism (2) further includes a drive assembly (22), which includes a slide groove (221). The slide groove (221) is opened on the inner surface of the bolt body (1). A slide bar (222) is slidably installed on the inner surface of the slide groove (221). A top rod (223) is fixedly installed on the outer surface of the slide bar (222). A conical top block (224) is fixedly installed at the bottom end of the top rod (223).

4. The expanded-base mechanical anchor bolt according to claim 3, characterized in that: The drive assembly (22) also includes a threaded rod (225), on the outer surface of which a washer (226) is rotatably mounted, and a hexagonal block (227) is fixedly mounted on the top of the threaded rod (225), and a pull bracket (228) is fixedly mounted on the top of the hexagonal block (227).

5. The expanded-base mechanical anchor bolt according to claim 4, characterized in that: The outer surface of the threaded rod (225) is threadedly connected to the inner surface of the top rod (223). The top end of the threaded rod (225) passes through the bolt body (1) and extends to the outside of the bolt body (1). The outer surface of the threaded rod (225) is rotatably connected to the outer surface of the bolt body (1) by the inner surface of the bolt body (1).

6. The expanded-base mechanical anchor bolt according to claim 1, characterized in that: The bolt fixing mechanism (2) further includes a spring-loaded assembly (23), which includes a slot (231) on the outer surface of the expansion block (213) and the bolt body (1). An elastic ring (232) is attached to the inner surface of the slot (231).

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