Anchoring head structure

Abstract

The utility model discloses an anchor head structure, including anchor head foundry parts and the pin shaft of being worn in anchor head foundry parts, the first stopper block of a pair of parallel is fixed on the one end surface of head foundry parts, and the second stopper block of a pair of parallel is connected on the other end surface through fastener, the shaft tail of pin shaft has the first axial plane of a pair of parallel, and still has the radial recess of a pair of and the first axial plane circumferential interval arrangement, and the shaft tail passes out anchor head one end surface and is embedded in the corresponding radial recess in two first stopper blocks respectively and clamps tightly, and the shaft head of pin shaft remains in the other end surface of anchor head foundry parts and is located between two second stopper blocks, and the shaft head also has the second axial plane of a pair of parallel and is respectively with the inside surface of corresponding second stopper block and is combined fixed. This structure can effectively avoid pin shaft dislocation and lead to pull off.

Description

Technical Field

[0001] This utility model pertains to anchor heads, specifically relating to an anchor head structure. Background Technology

[0002] During the manufacturing process of load-bearing components, casting defects or process defects may not be completely eliminated, leading to a deterioration in their mechanical properties and ultimately causing engineering accidents. For example, open anchor heads have been pulled apart during the use of grab buckets.

[0003] This is because traditional anchor head structures have threaded holes machined into the anchor head casting and bolt holes machined into the pin shaft. After the pin is inserted into the anchor head, it is connected to the anchor head with bolts and washers, and stop strips are welded to both sides of the shaft head. This structure only has radial fastening at one end, and once the bolts loosen, the shaft is very prone to shifting and falling off. Under eccentric load impact, the anchor head will form an outward V-shape, causing root cracking and anchor head splitting.

[0004] Therefore, how to prevent open anchor heads from breaking due to pin dislocation caused by sudden loads during use is an urgent problem that needs to be solved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an anchor head structure that can prevent the pin from dislodging and breaking.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An anchor head structure includes an anchor head casting and a pin inserted through the anchor head casting. A pair of parallel first stop blocks are fixed on one end face of the anchor head casting, and a pair of parallel second stop blocks are connected to the other end face by fasteners. The pin has a pair of parallel first axial planes at its tail and a pair of radial grooves spaced circumferentially from the first axial planes. The tail protrudes from one end face of the anchor head and is embedded in the corresponding radial grooves by the two first stop blocks and locked. The pin head remains outside the other end face of the anchor head casting and is located between the two second stop blocks. The pin head also has a pair of parallel second axial planes and is respectively attached and fixed to the inner surface of the corresponding second stop blocks.

[0008] The distance between the two first stop blocks is less than the diameter of the working section of the pin shaft, but greater than the distance between the two first axial planes.

[0009] The two radial grooves are symmetrical semi-circular, and the axial thickness of the grooves matches the thickness of the first stop block. The maximum radial distance at the bottom of the groove is less than the diameter of the working section of the pin, and it can satisfy the requirement that the first stop block is tangentially fixed to the bottom of the groove after being embedded.

[0010] The distance between the two second stop blocks is less than the diameter of the working section of the pin.

[0011] The first stop block is arranged radially at 90° to the first axial plane.

[0012] The second stop block and the first stop block are arranged radially at 90° to each other.

[0013] The anchor head structure of this invention features a radial groove at the shaft tail, which engages with a first stop block. The distance between the first stop blocks is less than the diameter of the working section, preventing axial movement and radial rotation of the pin. Similarly, a second stop block at the shaft head, fixed to the two axial planes of the shaft head, with the distance between the two second stop blocks also less than the diameter of the working section, further prevents axial movement and radial rotation of the pin. Therefore, even under significant force during use, the shaft will not shift, and the entire anchor head will not bear eccentric loads, reducing the risk of splitting and breakage. Attached Figure Description

[0014] The utility model will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0015] Figure 1 This is a schematic diagram of the anchor head structure at the shaft tail position of this utility model;

[0016] Figure 2 This is a schematic diagram of the anchor head structure at the shaft head position of this utility model;

[0017] Figure 3 for Figure 1 The left view;

[0018] Figure 4 This is a schematic diagram of the pin structure of this utility model;

[0019] Figure 5 This is a side view of the pin of this utility model;

[0020] Figure 6 for Figure 4 A cross-sectional view along line AA. Detailed Implementation

[0021] An anchor head structure of this utility model is as follows: Figures 1-6As shown, similar to existing technology, it also includes an anchor head casting 1 and a pin 2 passing through the anchor head casting 1. The difference is that a pair of parallel rectangular first stop blocks 3 are fixed to one end face of the anchor head casting 1 by welding or other means, and a pair of parallel rectangular second stop blocks 5 are connected to the other end face by fasteners 4 such as bolts and washers. The pin 2 has a pair of parallel first axial planes 6 at its tail end, and also a pair of radial grooves 8 spaced circumferentially from the first axial planes 6. The tail end protrudes from one end face of the anchor head and is respectively embedded and locked into the corresponding radial grooves 8 by the two first stop blocks 3. The pin 2's head remains outside the other end face of the anchor head casting 1 and is located between the two second stop blocks 5. The head also has a pair of parallel second axial planes 7, which are respectively fitted and fixed to the inner surfaces of the corresponding second stop blocks 5. The first and second axial planes 6 and 7, as well as the radial grooves 8, can all be machined by turning and milling.

[0022] The distance between the two first stop blocks 3 is less than the diameter of the working section of the pin 2 and slightly greater than the distance between the two first axial planes 6. The two radial grooves 8 are symmetrical semi-annular, and the axial thickness of the grooves 8 matches the thickness of the first stop blocks 3, allowing the first stop blocks 3 to be inserted into the grooves 8. The maximum radial distance at the bottom of the grooves is less than the diameter of the working section of the pin 2, ensuring that the first stop blocks 3 are tangentially fixed to the bottom of the groove after insertion. The distance between the two second stop blocks 5 is also less than the diameter of the working section of the pin 2.

[0023] Furthermore, the first stop block 3 is arranged radially at a 90° angle to the first axial plane 6, and the second stop block is arranged radially at a 90° angle to the first stop block. The positions that are tangentially fixed to the bottom of the groove are arranged radially at a 90° angle to the first axial plane 6.

[0024] During assembly, the two first axial planes 6 of the pin 2 inserted into the anchor casting 1 are aligned with the first stop block 3 and can then pass through one end face of the anchor casting 1. After rotating 90°, the radial groove 8 of the pin tail is turned to the first stop block 3 and the first stop block 3 is locked with the radial groove 8. At the same time, the second axial plane 7 of the pin head is rotated to the reserved screw hole on the other end face of the anchor casting 1. The two second stop blocks 5 are installed on the reserved screw hole by fasteners 4, and the inner side of the second stop block 5 is completely fitted and fixed with the second axial plane 7.

[0025] In this way, both the head and tail of the shaft can be protected against axial movement and radial rotation, ensuring that the total force on the pin 2 is balanced. Even if the anchor head is subjected to a large force during use, the pin 2 will not shift. If the pin 2 does not shift, the entire anchor head will not bear an eccentric load, thus reducing the risk of splitting and breaking.

[0026] However, those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. An anchor head structure, comprising an anchor head casting and a pin passing through the anchor head casting, characterized in that: A pair of parallel first stop blocks are fixed on one end face of the anchor head casting, and a pair of parallel second stop blocks are connected to the other end face by fasteners; the tail of the pin has a pair of parallel first axial planes and a pair of radial grooves circumferentially spaced from the first axial planes. The tail of the pin passes through one end face of the anchor head and is embedded in the corresponding radial grooves by the two first stop blocks and is locked. The head of the pin remains outside the other end face of the anchor head casting and is located between the two second stop blocks. The head of the pin also has a pair of parallel second axial planes and is respectively attached and fixed to the inner surface of the corresponding second stop blocks.

2. The anchor head structure according to claim 1, characterized in that: The distance between the two first stop blocks is less than the diameter of the working section of the pin shaft, but greater than the distance between the two first axial planes.

3. The anchor head structure according to claim 2, characterized in that: The two radial grooves are symmetrical semi-circular, and the axial thickness of the grooves matches the thickness of the first stop block. The maximum radial distance at the bottom of the groove is less than the diameter of the working section of the pin, and it can satisfy the requirement that the first stop block is tangentially fixed to the bottom of the groove after being embedded.

4. The anchor head structure according to claim 1, characterized in that: The distance between the two second stop blocks is less than the diameter of the working section of the pin.

5. The anchor head structure according to claim 3, characterized in that: The first stop block is arranged radially at 90° to the first axial plane.

6. The anchor head structure according to claim 4, characterized in that: The second stop block and the first stop block are arranged radially at 90° to each other.

Images