Post-anchoring anti-pulling counter-force anchor rod

Abstract

The utility model relates to the technical field of anchor rods, and discloses a post-anchoring anti-pulling counter-force anchor rod which comprises a cross threaded rod and a cover plate arranged on the cross threaded rod in a threaded mode, under the cooperation of the cross threaded rod, a limiting assembly, the cover plate, a connecting panel, a hinged rod, a limiting rod, a friction nail and a limiting panel, the connecting panel can extrude the hinged rod, and therefore the hinged rod is prevented from being damaged. A hinge rod extrudes a limiting rod to enable the limiting rod to expand outwards, a friction nail makes contact with a reserved hole, along with rotation of the friction nail, the friction nail can make better contact with the reserved hole, the friction force between the friction nail and the reserved hole is increased, and when the friction nail is ready, a cross threaded rod is pulled upwards to drive the friction nail to move upwards together, so that the friction nail is driven to move upwards, and the friction nail is driven to move upwards. After the test, the cross-shaped threaded rod is rotated reversely, the anchor rod and the preformed hole can be released from contact, then the anchor rod can be pulled out upwards, the purpose that the anti-pulling anchor rod can be recycled and reused is achieved, and cost and resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor rods, in particular to a post-anchoring anti-pulling reaction force anchor rod. Background Art

[0002] Concrete piles are constructed in underground soil layers, and anchor rods that can provide upward pull-out resistance are required for testing.

[0003] After the test, the residual anchor rod and glue are retained in the pile body and cannot be removed, which will affect the future stress of the pile. In addition, the test pull-out resistance mainly depends on the friction between the glue and the pile after solidification, which has high requirements for hole cleaning. If the hole is not cleaned properly, the friction will be affected. It is difficult to recycle the anchor rod after use, which is time-consuming, labor-intensive and cost-intensive. Therefore, it does not meet the existing needs. We have proposed a post-anchored pull-out reaction anchor rod. Utility Model Content

[0004] The utility model provides a post-anchored pull-out reaction anchor rod, which has the beneficial effects of being recyclable and reusable, saving costs and resources, and solves the problem in the above background technology that residual anchor rods and glue are retained in the pile body after the test and cannot be taken out, which affects the future force of the pile, and the test pull-out resistance mainly depends on the friction between the glue and the pile after solidification, which has high requirements for hole cleaning. If the hole is not cleaned properly, the friction force is affected, and it is difficult to recycle the anchor rod after use, which is time-consuming, labor-intensive and cost-intensive.

[0005] The utility model provides the following technical solution: a post-anchored anti-pull-out reaction force anchor rod, comprising a cross-threaded rod and a cover plate threadedly arranged on the cross-threaded rod, a fixed inner thread knob is arranged on the cross-threaded rod, a rotating block is fixedly installed on the bottom end of the cross-threaded rod, and a limit assembly that can provide anti-pull-out force is arranged on the cross-threaded rod.

[0006] As an optional solution for the rear-anchored anti-pull-out reaction anchor rod described in the utility model, the limiting assembly includes a connecting panel fixedly installed at the bottom end of the cross-threaded rod and a limiting panel slidably arranged on the cross-threaded rod, connecting rods are hingedly arranged at both ends of the limiting panel, hinged rods are hingedly arranged at both ends of the connecting panel, and a limiting rod is hingedly arranged between the connecting rod and the hinged rod.

[0007] As an optional solution of the post-anchoring anti-pulling reaction force anchor rod of the utility model, a plurality of friction nails are fixedly installed on the side wall of the limit rod, and the plurality of friction nails are fitted with the pre-drilled holes.

[0008] As an optional solution of the post-anchored pull-out reaction force anchor rod of the utility model, a plurality of friction nails are arranged in the shape of triangular blocks.

[0009] As an optional solution of the post-anchored pull-out reaction anchor rod of the utility model, wherein: the cover plate is in contact with the top of the concrete pile.

[0010] The utility model has beneficial effects: with the cooperation of the cross-threaded rod, the limit assembly, the cover plate, the connecting panel, the hinged rod, the limit rod, the friction pin and the limit panel, the connecting panel can squeeze the hinged rod, and the hinged rod also squeezes the limit rod to make it expand outward, and the friction pin contacts the reserved hole. As the friction pin rotates, it can better contact the reserved hole, thereby increasing the friction between the friction pin and the reserved hole. When ready, the cross-threaded rod is pulled upward, which will drive the friction pin to move upward together, and the pull-out resistance of the reserved hole can be measured. After the test, the cross-threaded rod is rotated in the opposite direction to release the contact between the anchor rod and the reserved hole, and then it can be pulled out upward, thereby realizing the recyclability and reuse of the pull-out anchor rod, saving costs and resources, and not leaving the anchor rod in the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the structure of the limit assembly of the utility model.

[0013] Figure 3 It is a schematic diagram of the limit rod structure of the utility model.

[0014] Figure 4 It is a structural schematic diagram of the anchor rod of the utility model being connected to the ground.

[0015] In the figure: 1. cross threaded rod; 2. fixed inner thread knob; 3. cover plate; 4. rotating block; 5. limit assembly; 51. connecting panel; 52. hinged rod; 53. limit rod; 54. friction pin; 55. limit panel; 56. connecting rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Example 1

[0018] See also Figure 1-4A post-anchored pull-out reaction anchor rod comprises a cross-threaded rod 1 and a cover plate 3 with threads arranged on the cross-threaded rod 1, a fixed inner thread knob 2 is arranged on the cross-threaded rod 1, a rotating block 4 is fixedly installed on the bottom end of the cross-threaded rod 1, and a limit assembly 5 capable of providing pull-out resistance is arranged on the cross-threaded rod 1.

[0019] The limiting assembly 5 includes a connecting panel 51 fixedly installed at the bottom end of the cross-threaded rod 1 and a limiting panel 55 slidably set on the cross-threaded rod 1. Connecting rods 56 are hingedly set at both ends of the limiting panel 55, and hinged rods 52 are hingedly set at both ends of the connecting panel 51. A limiting rod 53 is hingedly set between the connecting rod 56 and the hinged rod 52. Through the expansion and contraction of the limiting rod 53, the anchor rod can be well fitted with the reserved hole during the experiment, and it can also be conveniently recovered when the test is over.

[0020] A plurality of friction pins 54 are fixedly mounted on the side wall of the limiting rod 53 , and the plurality of friction pins 54 fit in with the pre-drilled holes.

[0021] The plurality of friction pins 54 are all arranged in a triangular block shape. The shape of the friction pins 54 allows them to have better contact with the inner wall of the reserved hole, thereby providing a better pull-out resistance test.

[0022] The cover plate 3 is in contact with the top of the concrete pile, which can provide a certain supporting force for the cross threaded rod 1, allowing it to rotate conveniently.

[0023] In this embodiment: first, the cross-threaded rod 1 and the limit assembly 5 are placed into the reserved holes on the ground, and then the cover plate 3 is fitted with the ground, and then the cover plate 3 is pressed. The operator rotates the cross-threaded rod 1, and the cross-threaded rod 1 will move vertically along the cover plate 3, which will drive the connecting panel 51, the hinged rod 52, the limit rod 53, the friction pin 54 and the limit panel 55 to move upward together. When the limit panel 55 contacts the cover plate 3, the cross-threaded rod 1 continues to move upward. Because the limit panel 55 slides with the cross-threaded rod 1, the connecting panel 51 can squeeze the hinged rod 52, and the hinged rod 52 also squeezes the limit rod 53, so that it moves upward. An outward expansion is carried out because a friction nail 54 is provided on the limit rod 53. When the friction nail 54 on the limit rod 53 contacts with the reserved hole, and then as the friction nail 54 rotates, it can make it better contact with the reserved hole, thereby increasing the friction force between the friction nail 54 and the reserved hole. When ready, pull the cross-threaded rod 1 upward, which will drive the friction nail 54 to move upward together, and the pull-out resistance of the reserved hole can be measured. After the test, the cross-threaded rod 1 is rotated in the opposite direction to release the contact between the anchor rod and the reserved hole, and then it can be pulled out upward, thereby realizing the recyclability and reuse of the pull-out anchor rod, saving costs and resources, and not leaving the anchor rod in the hole.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A post-anchored anti-pulling reaction force anchor rod, comprising a cross-threaded rod (1) and a cover plate (3) threadedly arranged on the cross-threaded rod (1), wherein a fixed inner thread knob (2) is arranged on the cross-threaded rod (1), characterized in that: A rotating block (4) is fixedly mounted on the bottom end of the cross-threaded rod (1), and a limiting component (5) capable of providing an anti-pullout force is provided on the cross-threaded rod (1).

2. The post-anchored pull-out reaction anchor rod according to claim 1, characterized in that: The limiting assembly (5) comprises a connecting panel (51) fixedly mounted at the bottom end of the cross-threaded rod (1) and a limiting panel (55) slidably arranged on the cross-threaded rod (1), connecting rods (56) being hingedly arranged at both ends of the limiting panel (55), hinged rods (52) being hingedly arranged at both ends of the connecting panel (51), and a limiting rod (53) being hingedly arranged between the connecting rod (56) and the hinged rod (52).

3. The post-anchored pull-out reaction anchor rod according to claim 2, characterized in that: A plurality of friction pins (54) are fixedly mounted on the side wall of the limiting rod (53), and the plurality of friction pins (54) fit in with the pre-drilled holes.

4. The post-anchored pull-out reaction anchor rod according to claim 3, characterized in that: The plurality of friction pins (54) are all arranged in a triangular block shape.

5. The post-anchored pull-out reaction anchor rod according to claim 4, characterized in that: The cover plate (3) is in contact with the top of the concrete pile.

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