Mechanical expansion shell anchor head

Abstract

The utility model discloses a mechanical expansion shell anchor head, and relates to the technical field of anchor heads. Comprising an anchor head body 1 and two expansion pieces, the two expansion pieces are located on the two sides of the anchor head body, two sliding grooves are formed in the top of the anchor head body, the positions, located in the two sliding grooves, of the anchor head body extend inwards to be provided with two teeth, clamping strips extend to be arranged on the sides, close to each other, of the two expansion pieces, notches are formed in one sides of the outer walls of the clamping strips, and the notches are matched with the teeth. The bottom of the outer wall of each tooth is provided with two stop blocks in an extending mode. By means of the sliding grooves, the teeth, the clamping strips, the notches and the check blocks, the notches of the clamping strips can be arranged on the teeth on the anchor head body in a sleeving mode so that the clamping strips can be clamped and embedded into the anchor head body, the check blocks at the bottom are used for limiting the expansion pieces from sliding out, it is guaranteed that the expansion pieces cannot be pulled out in the using process, and the limiting effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of anchor head technology, specifically to a mechanical expansion-shell anchor head. Background Technology

[0002] Currently, the expansion shell type anchor head refers to a device that generates anchoring force through the extrusion and friction between the expansion shell and the inner wall of the anchor bolt hole, and can apply prestress to fix the hollow anchor bolt body in the center of the anchor bolt hole.

[0003] The authorized publication number "CN221462354U" describes "a mechanical expansion-shell anchor head, including an anchor head body and two guide bars. The anchor head body has a through groove inside, and the left and right sides of the anchor head body have beveled surfaces. The two guide bars are respectively set on the corresponding beveled surfaces. This mechanical expansion-shell anchor head solves the problem of anchoring large diameters, improves the overall strength of the anchor body, and is easy to ensure quality. The positioning of the top of the anchor head body is better, which is conducive to the initial expansion of the wedge-shaped expansion shell. In addition, the anchor head body guides smoothly and runs stably, thus solving the problem of jamming in the initial operation of the wedge-shaped expansion shell. Through the overall design, the problem of poor guidance in the initial operation of the anchor head body is eliminated, and the requirements for large-diameter anchoring are achieved."

[0004] The aforementioned patent can solve the problem of jamming during the initial operation of the wedge-shaped expansion shell. Through the overall design, it eliminates the problem of poor guidance during the initial operation of the anchor head body and achieves the requirement of large-diameter anchoring. However, in actual use, the locking strip in the anchor head may sway up and down, which may cause the expansion plate to fall off, posing a safety hazard and affecting work efficiency. Utility Model Content

[0005] This utility model provides a mechanical expansion anchor head. Through a sliding groove, teeth, locking strip, notch, and stop, the notch of the locking strip can be fitted onto the teeth on the anchor head body, thereby locking it into the anchor head body. The stop at the bottom restricts the expansion piece from sliding out, ensuring that it will not be pulled out during use, thus playing a limiting role.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mechanical expansion anchor head, comprising:

[0007] The anchor head body consists of a main body and two expansion plates, which are located on both sides of the main body. The top of the main body has two grooves, and the main body has two teeth extending inward from each of the two grooves. Each of the two expansion plates has a retaining strip extending from the side that is close to each other. One side of the outer wall of the retaining strip has a notch that matches the teeth. The bottom of the outer wall of each of the two teeth has two blocks extending from it.

[0008] As a mechanical expansion anchor head of this utility model, the outer wall of the locking strip is slidably embedded in the groove.

[0009] As a mechanical expansion anchor head of this utility model, an opening is provided at the bottom of the outer wall of the anchor head body.

[0010] As a mechanical expansion anchor head of this utility model, two water outlets are opened on the upper surface of the outer wall of the anchor head body.

[0011] As a mechanical expansion anchor head of this utility model, the outer walls of the anchor head body are provided with reinforcing ribs on both sides.

[0012] This utility model provides a mechanically expandable anchor head. It has the following beneficial effects:

[0013] (1) The mechanical expansion shell anchor head, through the sliding groove, teeth, locking strip, notch and stop, can make the notch of the locking strip fit on the teeth on the anchor head body, thereby locking into the anchor head body, and use the bottom stop to restrict the expansion plate from sliding out, ensuring that it will not be pulled out during use, thus playing a limiting role. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is an exploded view of the present invention.

[0017] In the diagram: 1. Anchor head body; 2. Expanding plate; 3. Sliding groove; 4. Tooth; 5. Locking strip; 6. Notched groove; 7. Stop block; 8. Opening; 9. Water outlet; 10. Reinforcing rib. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a mechanical expansion anchor head, comprising:

[0020] The anchor head body 1 and two expansion plates 2 are located on both sides of the anchor head body 1. Two grooves 3 are opened on the top of the anchor head body 1. Two teeth 4 are extended inward at the two grooves 3. A retaining strip 5 is extended on the side of the two expansion plates 2 that are close to each other. A notch 6 is opened on one side of the outer wall of the retaining strip 5. The notch 6 and the teeth 4 are matched with each other. Two blocks 7 are extended from the bottom of the outer wall of the two teeth 4.

[0021] In this implementation scheme: the anchor head body 1 is attached to two expansion plates 2 to form a beveled surface, thereby forming a V-shape. This allows the anchor head body 1 to have a guiding and positioning function from the moment it starts working on the working surface, preventing the expansion shell from swinging left and right and getting stuck. The contact shape between the two locking strips and the anchor head body 1 reduces the magnitude of the frictional force perpendicular to the guiding direction generated by the rotation of the screw, and reduces the frictional force of the expansion shell swinging left and right, thus making it more conducive to guidance. The two sliding grooves 3 allow the locking strips 5 to slide up and down stably. The teeth 4 extending inward from the anchor head body 1 at the position of the sliding groove 3 can restrict the locking strips 5. The locking strips 5 can be fitted onto the teeth 4 using the notch 6 and slide into the sliding groove 3. At this time, the teeth 4 can restrict the locking strips 5. The two stops 7 below the locking strips 5 ensure that the locking strips 5 cannot be pulled out, which plays a limiting role. The outlet size is smaller than the width of the two stops 7 at the rear end, so it can only be guided left and right, and cannot slide and embed up and down.

[0022] Specifically, the outer wall of the card strip 5 is slidably embedded in the groove 3.

[0023] In this embodiment, the sliding groove 3 allows the card strip 5 to slide stably.

[0024] Specifically, an opening 8 is provided at the bottom of the outer wall of the anchor head body 1.

[0025] In this embodiment, the opening 8 is used in conjunction with two outlets 9 to ensure maximum water output and make it easier to produce slurry.

[0026] Specifically, two water outlets 9 are opened on the upper surface of the outer wall of the anchor head body 1.

[0027] In this embodiment, the water flow is increased by using two outlets 9, while avoiding stress concentration that could lead to breakage.

[0028] Specifically, reinforcing ribs 10 are provided on both sides of the outer wall of the anchor head body 1.

[0029] In this embodiment, the reinforcing rib 10 serves to strengthen and solidify the anchor head body 1.

[0030] In use, the anchor head body 1 fits against the two expansion plates 2 to form a beveled surface, thus creating a V-shape. This allows the anchor head body 1 to have a guiding and positioning function from the moment it starts working on the working surface, preventing the expansion shell from swaying left and right and getting stuck. The contact shape between the two locking strips and the anchor head body 1 reduces the magnitude of the frictional force perpendicular to the guiding direction generated by the screw rotation, and also reduces the frictional force caused by the left and right swaying of the expansion shell, thus making it more conducive to guidance. The two sliding grooves 3 allow the locking strips 5 to slide stably up and down, and the teeth 4 extending inward from the anchor head body 1 at the position of the sliding grooves 3 can restrict the locking strips 5. The locking strip 5 can be fitted onto the tooth 4 using the notch 6 and slide into the groove 3. At this time, the tooth 4 can restrict the locking strip 5. The two stops 7 below the locking strip 5 ensure that the locking strip 5 cannot be pulled out, thus playing a limiting role. The outlet size is smaller than the width of the two stops 7 at the rear end, so it can only be guided left and right and cannot slide into the groove up and down. The opening 8 is used in conjunction with the two water outlets 9 to ensure the maximum water output and make it easier to discharge slurry. The two water outlets 9 increase the water output and at the same time avoid stress concentration and cracking. The reinforcing rib 10 plays a role in strengthening and consolidating the anchor head body 1.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mechanically expanded shell anchor head, characterized in that, include: An anchor head body (1) and two expansion plates (2), the two expansion plates (2) are located on both sides of the anchor head body (1), the top of the anchor head body (1) has two sliding grooves (3), the anchor head body (1) has two teeth (4) extending inward at the two sliding grooves (3), the two expansion plates (2) have a retaining strip (5) extending on the side that is close to each other, the retaining strip (5) has a notch (6) on one side of its outer wall, the notch (6) and the teeth (4) match each other, and the bottom of the outer wall of the two teeth (4) has two blocks (7) extending.

2. The mechanical expansion anchor head according to claim 1, characterized in that: The outer wall of the card strip (5) is slidably embedded in the groove (3).

3. The mechanical expansion anchor head according to claim 2, characterized in that: An opening (8) is provided at the bottom of the outer wall of the anchor head body (1).

4. The mechanical expansion anchor head according to claim 3, characterized in that: Two water outlets (9) are opened on the upper surface of the outer wall of the anchor head body (1).

5. The mechanical expansion anchor head according to claim 4, characterized in that: The anchor head body (1) has reinforcing ribs (10) extending from both sides of its outer wall.

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