High-strength yielding tray and manufacturing process thereof

Abstract

The invention discloses a high-strength yielding tray and a manufacturing process thereof, and relates to the technical field of anchor cable trays. A concave arc-shaped body is formed in the center area of the side face of the tray in a stamping mode, concave-convex rib bodies are arranged on the outer side face of the concave arc-shaped body, and the number of the concave-convex rib bodies is 4-10. A through hole is formed in the center area of the side face of the concave arc-shaped body and used for allowing an anchor cable to penetrate through, a yielding ring is arranged in the through hole and is in interference fit with the through hole, the tray serves as a bearing structure at the tail end of the anchor cable, supporting force of the anchor cable is evenly transmitted to the surface of surrounding rock through cooperation of the tray and the yielding ring, a continuous compression zone is formed, and the anchor cable is supported. By means of the structural design, the supporting rigidity is improved, the anchor rods, the anchor cables and surrounding rock form a cooperative bearing system through the coupling effect, and overload failure of individual supporting bodies is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor cable trays, and more specifically, to a high-strength yielding tray and its manufacturing process. Background Art

[0002] In the field of underground engineering such as mine support, tunnel engineering, and slope reinforcement, the anchor cable support system is a key guarantee system for the stability of surrounding rocks. The structural performance of the terminal force-bearing components directly affects the bearing capacity and deformation control ability of the entire support structure. As the traditional tray structure, which is the force transmission hub of the anchor cable system, when dealing with the dynamic impact load in the mine roadway, there is generally a brittle failure phenomenon caused by stress concentration: when instantaneous rock bursts occur in the roadway surrounding rock, the mechanical coupling effect between the anchor and the tray easily causes plastic deformation instability in the central hole area, and further leads to a major safety hazard of anchor cable shear fracture.

[0003] Based on this, the present invention provides a high-strength yielding tray and its manufacturing process. Summary of the Invention

[0004] In order to solve the problems raised in the above background art, the present invention provides a high-strength yielding tray and its manufacturing process. As the bearing structure at the end of the anchor cable, the tray, through cooperation with the yielding ring, evenly transmits the support force of the anchor cable to the surface of the surrounding rock, forming a continuous compression zone. Through this structural design, not only the support stiffness is improved, but also a collaborative bearing system of the bolt, anchor cable, and surrounding rock is formed through the coupling effect, preventing individual support members from overloading and failing.

[0005] The high-strength yielding tray provided by the present invention adopts the following technical solutions:

[0006] A high-strength yielding tray includes a tray; a concave arc body is formed by stamping in the central area of the side surface of the tray, and uneven ribs are arranged on the outer side surface of the concave arc body, and the number of the uneven ribs is 4 - 10; a through hole is opened in the central area of the side surface of the concave arc body for passing through the anchor cable.

[0007] Preferably, the uneven ribs are arranged in a circular array on the outer side surface of the concave arc body.

[0008] Preferably, the tray, the concave arc body, and the uneven ribs are integrally formed.

[0009] Preferably, a lifting ring is arranged on the side surface of the tray.

[0010] Preferably, a yielding ring is arranged in the through hole.

[0011] Preferably, an interference connection is provided between the yielding ring and the through hole.

[0012] The manufacturing process of the high-strength yielding tray provided by the present invention adopts the following technical solutions:

[0013] A manufacturing process for a high-strength yielding tray, which is used to manufacture the above-mentioned high-strength yielding tray, is characterized by including the following steps:

[0014] S1. Select a metal base plate.

[0015] S2. Cut the plate into rectangular blocks of a preset size by a shearing machine.

[0016] S3. Use a stamping machine to stamp the central area of the rectangular block to form an inwardly concave arc-shaped body, and simultaneously stamp 4 - 10 concavo-convex rib bodies distributed in an annular array on the outer side of the arc-shaped body, so that the tray, the arc-shaped body and the concavo-convex rib bodies are integrally formed.

[0017] S4. Stamp a through hole in the central area of the arc-shaped body.

[0018] S5. Press-fit the yielding ring into the through hole by interference fit.

[0019] S6. Weld and fix a lifting ring on the side of the tray.

[0020] Preferably, in S3, the stamping of the arc-shaped body is completed in two times. The first stamping forms an arc-shaped depression contour, and the second stamping strengthens the rib body structure and shapes the annular array distribution of the concavo-convex rib bodies.

[0021] In summary, the present invention includes the following beneficial technical effects:

[0022] 1. Assemble a yielding ring in the through hole of the tray. When the yielding ring cooperates with the tray, it can optimize the force transmission path. The tray transmits the pre-tightening force of the anchor cable to the surrounding rock surface, while the yielding ring reduces stress concentration through a buffering effect. As the bearing structure at the end of the anchor cable, the tray, through cooperation with the yielding ring, evenly transmits the supporting force of the anchor cable to the surrounding rock surface, forming a continuous compression zone. Through this structural design, not only the supporting stiffness is improved, but also a collaborative bearing system of bolts, anchor cables and surrounding rock is formed through a coupling effect, preventing individual support members from overloading and failing.

[0023] 2. The yielding ring is press-fitted into the through hole by interference fit. This structure can absorb the deformation energy of the surrounding rock and achieve buffering and yielding through plastic deformation in a high-stress environment, avoiding the overloading and fracture of the bolt due to rigid constraints. At the same time, the curved surface structure of the arc-shaped body and the yielding ring act synergistically to adjust the force direction and reduce the damage of shear stress to the bolt.

[0024] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the drawings and the following detailed description. Description of the Drawings

[0025] Figure 1 is a schematic structural view of a high-strength yielding tray in an embodiment of the present invention;

[0026] Figure 2 is a schematic structural view of the tray and the yielding ring in an expanded state in an embodiment of the present invention.

[0027] Description of the reference numerals: 1, tray; 2, concave arc body; 3, concave-convex rib body; 4, through hole; 5, lifting ring; 6, yielding ring. Detailed Description of the Embodiment

[0028] The following further describes the present invention in detail with reference to the Figures 1 to 2 drawings.

[0029] It should be noted that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size for illustration, and any dimensions are merely exemplary and not limiting. In addition, the same reference numerals are used for the same structures, elements or fittings that appear in more than two figures to represent similar features.

[0030] Embodiment 1

[0031] An embodiment of the present invention discloses a high-strength yielding tray. Referring to Figures 1 to 2 , a high-strength yielding tray includes a tray 1; a concave arc body 2 is stamped in the central area of the side surface of the tray 1, and a concave-convex rib body 3 is arranged on the outer side surface of the concave arc body 2, and the number of the concave-convex rib bodies 3 is 4-10; a through hole 4 is opened in the central area of the side surface of the concave arc body 2 for passing through a cable bolt.

[0032] Specifically, the concave-convex rib bodies 3 are arranged in a circular array on the outer side surface of the concave arc body 2.

[0033] Specifically, the tray 1, the concave arc body 2 and the concave-convex rib body 3 are integrally formed.

[0034] As Figure 2 shown, a lifting ring 5 is arranged on the side surface of the tray 1.

[0035] As Figure 2 shown, a yielding ring 6 is arranged in the through hole 4.

[0036] Specifically, an interference fit exists between the yielding ring 6 and the through hole 4.

[0037] Specifically, a yielding ring 6 is assembled in the through hole 4 of the tray 1. When the yielding ring 6 cooperates with the tray 1, the force transmission path can be optimized. The tray 1 transmits the pre-tightening force of the cable bolt to the surrounding rock surface, while the yielding ring 6 reduces stress concentration through a buffering effect;

[0038] Under the action of surrounding rock displacement or transverse shear force, the free section of the anchor cable is prone to transverse fracture. The cooperation between the pressure-relieving ring 6 and the tray 1 can limit the displacement of the free section of the anchor cable and avoid local damage caused by shear or friction;

[0039] As the bearing structure at the end of the anchor cable, the tray 1 evenly transmits the supporting force of the anchor cable to the surface of the surrounding rock through cooperation with the pressure-relieving ring 6, forming a continuous compression zone. Through this structural design, not only the supporting stiffness is improved, but also a collaborative bearing system is formed among the bolt, the anchor cable and the surrounding rock through the coupling effect, preventing individual supporting bodies from overloading and failing.

[0040] Embodiment Two

[0041] The embodiment of the present invention discloses a manufacturing process for a high-strength pressure-relieving tray, which is used to manufacture the above-mentioned high-strength pressure-relieving tray, and includes the following steps:

[0042] S1. Select a metal base material plate;

[0043] S2. Cut the plate into rectangular blocks of a preset size by a shearing machine;

[0044] S3. Use a stamping machine to stamp the central area of the rectangular block to form an inwardly concave arc-shaped body 2, and simultaneously stamp 4-10 concavo-convex rib bodies 3 distributed in a circular array on the outer side of the arc-shaped body 2, so that the tray 1, the arc-shaped body 2 and the concavo-convex rib bodies 3 are integrally formed;

[0045] S4. Stamp a through hole 4 in the central area of the arc-shaped body 2;

[0046] S5. Press-fit the pressure-relieving ring 6 into the through hole 4 by interference fit;

[0047] S6. Weld and fix a lifting ring 5 on the side of the tray 1.

[0048] Specifically, in S3, the stamping of the arc-shaped body 2 is completed in two steps. The first stamping forms an arc-shaped depression contour, and the second stamping strengthens the rib structure and finalizes the circular array distribution of the concavo-convex rib bodies 3.

[0049] The arc-shaped body 2 and the concavo-convex rib bodies 3 distributed in a circular array are formed through two stamping processes, so that the tray 1, the arc-shaped surface and the rib bodies are integrally formed. This design improves the overall structural strength. The arc-shaped surface can disperse the concentrated stress and enhance the anti-bending ability through multi-directional support, preventing deformation or fracture caused by local stress. The step-by-step stamping process (first forming, second strengthening) ensures the contour accuracy of the rib bodies and the material density, and optimizes the stress transmission path;

[0050] The yielding ring 6 is press-fitted into the through hole 4 by interference fit. This structure can absorb the deformation energy of the surrounding rock and achieve buffer yielding through plastic deformation in a high-stress environment, avoiding the overload fracture of the bolt due to rigid constraint. At the same time, the curved surface structure of the concave arc body 2 and the yielding ring 6 act together to adjust the force direction and reduce the damage of shear stress to the bolt.

[0051] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description of the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt the conventional models in the prior art, and will not be elaborated here.

[0052] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0055] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, and other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-strength yielding tray, characterized in that, Comprising: A tray (1); A concave arc body (2) is formed by stamping in the central area of the side of the tray (1), and a concave-convex rib body (3) is arranged on the outer side of the concave arc body (2), and the number of the concave-convex rib bodies (3) is 4 - 10; A through hole (4) is provided in the central area of the side of the concave arc body (2) for passing through a cable anchor.

2. The high-strength yielding tray according to claim 1, characterized in that: The concave-convex rib bodies (3) are arranged in a circular array on the outer side of the concave arc body (2).

3. A high-strength yielding tray according to claim 1, characterized in that: The tray (1), the concave arc body (2) and the concave-convex rib body (3) are integrally formed.

4. The high-strength yielding tray according to claim 1, wherein: A lifting ring (5) is arranged on the side of the tray (1).

5. The high-strength yielding tray according to claim 1, characterized in that: A yielding ring (6) is arranged in the through hole (4).

6. The high-strength yielding tray according to claim 1, characterized in that: An interference fit is provided between the yielding ring (6) and the through hole (4).

7. A manufacturing process for a high-strength yielding tray, which is used to manufacture a high-strength yielding tray according to any one of claims 1-6, characterized in that, Comprising the following steps: S1. Select a metal base material plate; S2. Cut the plate into a rectangular block with a preset size by a shearing machine; S3. Use a stamping machine to stamp the central area of the rectangular block to form an inwardly concave concave arc body (2), and simultaneously stamp 4 - 10 concave-convex rib bodies (3) distributed in a circular array on the outer side of the concave arc body (2), so that the tray (1), the concave arc body (2) and the concave-convex rib body (3) are integrally formed; S4. Stamp a through hole (4) in the central area of the concave arc body (2); S5. Press-fit the yielding ring (6) into the through hole (4) by interference fit; S6. Weld and fix the lifting ring (5) on the side of the tray (1).

8. The manufacturing process of a high-strength yielding tray according to claim 7, characterized in that: In S3, the stamping of the concave arc body (2) is completed in two times. The first stamping forms an arc-shaped concave contour, and the second stamping strengthens the rib body structure and shapes the circular array distribution of the concave-convex rib bodies (3).

Images