Mining quadrangular spherical surface pre-stressed anchor cable tray
By designing spherical round protrusions and reinforcement ribs for mining four-corner spherical prestressed anchor trays, the existing anchor trays have solved the problems of four-corner lifting and safety hazards when pressure comes, and achieved higher compressive strength and Carrying capacity and reducing costs.
Patent Information
- Application Number
- CN202421209277.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing mining anchor tray is prone to four corners when pressure comes, the material lacks elastic deformation, the preload force can only act on a small area, the safety performance is low, and the steel plate thickness changes at the reinforcement ribs of the high-strength anchor tray. Thin, there is a safety hazard of breakage.
A quadrangle spherical prestressed anchor tray is designed for mining, using spherical round protrusions and reinforcement ribs. The surrounding edges of the anchor tray are raised upward to form edge corners to prevent falling holes from preventing the tray from falling off.
Improve the compressive strength and bearing capacity of the anchor tray, impart the inherent elastic deformation with prestress, maintain the follow-up lock function of the anchor tray, reduce costs, and avoid thinning and breaking of the steel plate at the reinforcement ribs. risk.
Smart Images
Figure CN222478748U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anchor cable support, in particular to a four-corner spherical prestressed anchor cable tray for mining. Background Art
[0002] The mining anchor cable support unit is composed of steel strands, anchor cable trays, locks, anchoring agents and other components. The anchor cable tray is mainly used to press the tunnel surface, spread the preload force of the anchor cable, and achieve support for the tunnel. The anchor cable tray that is currently used more often is processed into a convex arch shape on the middle surface of the tray. When pressure comes, this type of tray support is prone to warping at the four corners. At the same time, the main body of the material lacks elastic deformation and cannot produce prestress. It is very inconvenient to use in actual construction and the support cost is high. The preload force of the anchor cable can only act on a small area around the tray hole, and the range of preload force diffusion will be reduced, and the safety performance is low. In addition, the existing high-strength anchor cable tray with concave and convex reinforcement rib design has the problem of thinning the steel plate thickness at the concave and convex reinforcement ribs. The reason is that the support strength of the reinforcement ribs is pursued within a limited range, and the steel plate is forcibly stretched, which is prone to breakage when pressure comes. Utility Model Content
[0003] In order to overcome the defects of the prior art, the utility model provides a four-corner spherical prestressed anchor cable tray for mining.
[0004] The utility model solves the above-mentioned problem through a technical solution: a four-corner spherical prestressed anchor cable tray for mining, comprising an anchor cable tray body;
[0005] The anchor cable tray body is provided with a spherical circular protrusion and reinforcing ribs;
[0006] The anchor cable tray body is provided with an anti-falling hole;
[0007] The edges of the anchor cable tray body are tilted upward to form an edge tilt angle B; the edge tilt angle B is 1-30 degrees.
[0008] As a preferred solution of the four-corner spherical prestressed anchor cable tray for mining described in the utility model: the anchor cable tray body is a quadrilateral; the reinforcing ribs are used to connect the anchor cable tray body and the spherical circular protrusions.
[0009] As a preferred solution of the four-corner spherical prestressed anchor cable tray for mining described in the utility model: the anchor cable tray body is a square; four evenly distributed reinforcing ribs are provided on the anchor cable tray body; the extension lines of the center lines of two symmetrically distributed reinforcing ribs coincide with the two diagonals of the square respectively.
[0010] As a preferred solution of a four-corner spherical prestressed anchor cable tray for mining described in the utility model: a tray plane is provided on the top of the spherical circular protrusion; and an anchor cable through hole is provided at the center of the tray plane.
[0011] As a preferred solution of the four-corner spherical prestressed anchor cable tray for mining described in the utility model: the edge warp angle B is 10-15°.
[0012] As a preferred solution of the four-corner spherical prestressed anchor cable tray for mining described in the utility model: the anchor cable tray body is made of metal material, and its Rockwell hardness is not less than 22.
[0013] As a preferred solution of the four-corner spherical prestressed anchor cable tray for mining described in the utility model: the reinforcing ribs all adopt arc transition.
[0014] The utility model has innovative effects: the utility model solves the technical problem of the four corners of the anchor cable tray being raised when pressure comes in actual use. Compared with the traditional anchor cable tray, the compressive strength is higher and the bearing capacity is stronger. At the same time, the design of the spherical circular protrusion allows the inherent elastic deformation to give a certain prestress during support, so that the follow-up locking function of the anchor cable lock can be maintained, giving full play to the anchor cable support function, and achieving the entire anchor cable tray with light weight and small size, which is convenient for on-site installation and use, and can also reduce costs. In addition, it solves the problem that some high-strength anchor cable trays with concave and convex reinforcement rib designs currently pursue the support strength of the reinforcement ribs. Within a limited range, the steel plate is forcibly stretched to cause the thickness of the steel plate at the concave and convex reinforcement ribs to become thinner, which is prone to breakage when pressure comes. The anti-fall holes can prevent the tray from falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 yes Figure 1 Schematic diagram of the middle AA section;
[0017] Figure 3 This is the example size of the application of this utility model Figure 1 ;
[0018] Figure 4 This is the example size of the application of this utility model Figure 2 ;
[0019] In the figure: 10-anchor cable tray body; 11-spherical circular protrusion; 12-reinforcement rib; 13-tray plane; 14-anchor cable through hole; 15-anti-fall hole; edge warp angle B; side length L of anchor cable tray body; projection diameter M of spherical circular protrusion; projection width C of reinforcement rib; diameter N of tray plane; diameter Q of anchor cable through hole; thickness d of anchor cable tray body; height k of reinforcement rib protrusion; height h of tray plane from the bottom of anchor cable tray body. DETAILED DESCRIPTION
[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0021] like Figure 1-4 As shown, a four-corner spherical prestressed anchor cable tray for mining includes an anchor cable tray body 10;
[0022] The anchor cable tray body 10 is provided with a spherical circular protrusion 11 and a reinforcing rib 12;
[0023] The anchor cable tray body 10 is provided with an anti-falling hole 15;
[0024] The edges of the anchor cable tray body 10 are tilted upward to form an edge tilt angle B; the edge tilt angle B is 1-30 degrees.
[0025] Specifically, the role of the spherical circular protrusion 11 is as follows: the spherical surface has good elastic support, can maintain a certain elastic deformation, stress will not be concentrated, and a long-term pre-tightening force is transmitted to the anchor cable lock, thereby improving the tightening function of the anchor cable lock.
[0026] The function of the reinforcing ribs 12 is to improve the support strength of the entire anchor cable tray body 10 at the plane.
[0027] The function of the edge angle B is to form an angle with the shaft support surface, so as to facilitate the use of wires to connect with the support net through the anti-fall hole 15 to prevent the anchor tray body 10 from falling, and at the same time provide reinforced support for the edges around the anchor tray body 10.
[0028] The anchor cable tray body 10 is a quadrilateral; the reinforcing ribs 12 are used to connect the anchor cable tray body 10 and the spherical circular protrusion 11.
[0029] The anchor cable tray body 10 is in the shape of a square. Four evenly distributed reinforcing ribs 12 are arranged on the anchor cable tray body 10. The extension lines of the center lines of two symmetrically distributed reinforcing ribs 12 coincide with the two diagonals of the square respectively.
[0030] Specifically, the four evenly distributed reinforcing ribs 12 can further eliminate the weak links in the strength of the four corners of the entire anchor cable tray body 10, prevent curling of the four corners, and weaken the prestress of the entire tray, thereby largely meeting the relevant technical requirements of MT / T942-2005 on the bearing capacity of mining anchor cable trays.
[0031] A tray plane 13 is provided on the top of the spherical circular protrusion 11 ; an anchor cable through hole 14 is provided at the center of the tray plane 13 .
[0032] Specifically, the anchor cable through hole 14 is used for passing the anchor cable during support.
[0033] The edge tilt angle B is 10-15°.
[0034] Specifically, this angle can better connect with the shaft and tunnel support surface and has high stability.
[0035] The anchor cable tray body 10 is made of metal, and its Rockwell hardness is not less than 22.
[0036] Specifically, the appropriate Rockwell hardness maintains sufficient elastic support force, which is beneficial to avoid the safety and technical hazard of the anchor cable tray body 10 being easily broken when subjected to pressure.
[0037] The reinforcing ribs 12 all adopt arc-shaped transition.
[0038] Specifically, the arc-shaped transition has better force uniformity.
[0039] The following is a specific dimension design drawing of a four-corner spherical prestressed anchor tray for mining as a reference for practical application. The scope of protection includes but is not limited to the specific dimension design.
[0040] like Figure 2-4 As shown, the side length L of the anchor pallet body 10 is 200mm-400mm, the thickness d of the anchor pallet body 10 is 7mm-14mm; the edge angle B is 10-15°; the projection width C of the reinforcement rib 12 is 50mm-60mm, the protrusion height k of the reinforcement rib 12 is 30mm, and the height h of the pallet plane 13 from the bottom of the anchor pallet body 11 is 45mm-55mm; the projection diameter M of the spherical circular protrusion 11 is 120mm-130mm; the diameter N of the pallet plane 13 is 50-70mm; the diameter Q of the anchor through hole 14 is 20-35mm; the anti-fall hole 15 is 6mm.
[0041] The material of the anchor cable tray is not less than Q355, and the hot pressing and heating treatment process is adopted. The Rockwell hardness of the surface of the prestressed anchor cable tray is not less than 22.
[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A four-corner spherical prestressed anchor cable tray for mining, characterized by: It includes an anchor cable tray body (10); The anchor cable tray body (10) is provided with a spherical circular protrusion (11) and a reinforcing rib (12); The anchor cable tray body (10) is provided with an anti-fall hole (15); The edges of the anchor cable tray body (10) are tilted upwards to form an edge tilt angle B; the edge tilt angle B is 10°; The anchor cable tray body (10) is a quadrilateral; the reinforcing rib (12) is used to connect the anchor cable tray body (10) and the spherical circular protrusion (11); The anchor cable tray body (10) is square; four evenly distributed reinforcing ribs (12) are provided on the anchor cable tray body (10); the extension lines of the center lines of two symmetrically distributed reinforcing ribs (12) respectively coincide with the two diagonals of the square; A tray plane (13) is provided on the top of the spherical circular protrusion (11); an anchor cable through hole (14) is provided at the center of the tray plane (13); The anchor cable tray body (10) is made of metal, and its Rockwell hardness is not less than 22; The reinforcing ribs (12) all adopt arc-shaped transition.