CN213540446U

CN213540446U - Buffering lets pressure type stock tray

Info

Publication number: CN213540446U
Application number: CN202022538068.9U
Authority: CN
Inventors: 李越; 宋红旭; 王清标; 施振跃; 李因旭; 张军舰; 李中莹; 王栋; 王富强
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-06-25
Anticipated expiration: 2030-11-06

Abstract

The utility model relates to a buffering lets pressure type stock tray comprises tray shell, a high tensile spring, high damping rubber, No. two high tensile spring, stock, nut, dop, draw-in groove. The dop is round platform form arch, and structure as an organic whole with the stock, and the draw-in groove divide into one-level draw-in groove, second grade draw-in groove, tertiary draw-in groove, and a high strength spring symmetric arrangement is in four extreme points department of tray shell upper surface, and draw-in groove, No. two high strength spring arrange in the central point of tray shell and put, and arrange about being, and high damping rubber fills hollow portion in the tray. This buffering lets presses type stock tray has overcome traditional stock tray buffering and has let to press the ability weak, fragile problem, and simple structure, simple to operate still can play fine buffering under the prerequisite of guaranteeing the anchor effect and let the pressure effect.

Description

Buffering lets pressure type stock tray

Technical Field

The utility model relates to a be applied to anchor tray device in geotechnical engineering anchor supporting field, be particularly useful for a buffering lets press type stock tray.

Background

When the reinforcement and the support of tunnel country rock and mine tunnel are carried out, the stock can be used often and the anchor is carried out, but along with excavation depth constantly increases, the stress variation and the deformation condition of rock mass become very complicated, the degree of difficulty that big shape becomes high stress country rock was strutted constantly increases, the rock burst calamity frequently takes place, the stock tray is as the important component part of supporting system, expand to certain extent when the country rock, produce great deformation or the rock burst calamity is comparatively serious, traditional stock tray is because the buffering lets the pressure ability weak, deformation is serious, damage phenomena such as being pierced through or fracturing destruction appear very easily, make the stability in tunnel receive serious influence, and then cause accidents such as collapse, roof fall, there is great potential safety hazard.

Therefore, need for one kind can cushion the external impact dynamic load, can give way the pressure to the country rock that produces great deformation again, and can provide the stock tray device of good anchor effect to avoid the damage of stock tray, guarantee to strut the effect, reduce the potential safety hazard of engineering.

Disclosure of Invention

In order to solve the deficiencies in the prior art, the utility model provides a buffering lets pressure type stock tray, this stock tray is frequent in rock burst calamity, also can guarantee good supporting effect in the strutting of the high stress country rock of great deformation, and simple structure, easily popularization.

The utility model adopts the following technical proposal:

the utility model provides a buffering lets die mould stock tray comprises tray shell, high strength spring, high damping rubber, No. two high strength spring, stock, nut, dop, draw-in groove, its characterized in that: the draw-in groove comprises one-level draw-in groove, second grade draw-in groove, tertiary draw-in groove, a high tensile spring's both ends weld with upper surface, the lower surface of tray shell respectively, and symmetrical arrangement is in four extreme points department of tray shell upper surface, high damping rubber fills hollow portion in the tray, draw-in groove, No. two high tensile springs all are located the central point of tray shell and put, and arrange about being in proper order, tray shell upper surface and draw-in groove top, draw-in groove bottom and No. two high tensile spring top, No. two high tensile spring bottoms and tray shell lower surface all are connected as an organic whole structure through the welded mode, the dop is protruding for the round platform form, structure as an organic whole with the stock, be connected through the screw thread between stock tip and the nut.

Preferably, the tray shell is in a trapezoidal quadrangular frustum pyramid shape and is made of stainless steel.

Preferably, the clamping heads are matched with the primary clamping grooves, the secondary clamping grooves and the tertiary clamping grooves.

Preferably, the central positions of the upper surface and the lower surface of the tray shell are respectively provided with a circular through hole, and the diameter of the circular through hole is 2-3 mm larger than that of the circular truncated cone-shaped bottom surface of the chuck.

Preferably, the length of the second high-strength spring is 1/2 of the first high-strength spring, the diameter of the second high-strength spring is the same as that of the first high-strength spring, and the diameter of the second high-strength spring is 5-6 mm larger than that of the circular through hole of the tray shell.

The utility model has the advantages that:

(1) the anchor rod tray shell is set to be trapezoidal quadrangular frustum pyramid shape, so that the contact area with surrounding rocks can be effectively increased, and the supporting effect of the anchor rod is guaranteed.

(2) Four first high-strength springs, one second high-strength spring and filled high-damping rubber are arranged, so that a good buffering effect on impact load can be achieved.

(3) Set up dop, tertiary draw-in groove, constantly expand when the country rock, the continuous increase of deformation, when stress constantly increases, the stock tray can carry out the pressure of stepping down many times, produces certain displacement volume, greatly reduced stock tray damage probability in the use under the prerequisite of guaranteeing the anchor bolt supporting effect, greatly reduced the potential safety hazard, strengthened the factor of safety of engineering.

Drawings

Fig. 1 is a schematic view of a cross-sectional structure of the present invention.

Fig. 2 is a schematic view of the top view structure of the present invention.

Fig. 3 is a schematic view of the anchor rod and the chuck structure of the present invention.

Reference numerals: 1 tray shell, 2 high tensile spring, 3 high damping rubbers, 4 one-level draw-in grooves, 5 second grade draw-in grooves, 6 third grade draw-in grooves, 7 second grade high tensile spring, 8 stock, 9 nuts, 10 dops, 11 draw-in grooves.

Detailed Description

The utility model is described in detail with the following figures:

the utility model provides a buffering lets die mould stock tray, comprises tray shell 1, a high-strength spring 2, high damping rubber 3, No. two high-strength spring 7, stock 8, nut 9, dop 10, draw-in groove 11, its characterized in that: draw-in groove 11 comprises one-level draw-in groove 4, second grade draw-in groove 5, tertiary draw-in groove 6, the both ends of a high-strength spring 2 weld with upper surface, the lower surface of tray shell 1 respectively mutually, and symmetrical arrangement is in four extreme points department of tray shell 1 upper surface, hollow portion in the tray is filled to high damping rubber 3, draw-in groove 11, No. two high-strength spring 7 all are located tray shell 1's central point and put, and arrange about being in proper order, tray shell 1 upper surface and draw-in groove 11 top, draw-in groove 11 bottom and No. two high-strength spring 7 tops, No. two high-strength spring 7 bottoms all are connected as an organic whole structure through the welded mode with tray shell 1 lower surface, dop 10 is the round platform form arch, and stock 8 structure as an organic whole, be connected through the screw thread between 8 tip of stock and the nut 9. The tray shell 1 is in a trapezoidal quadrangular frustum pyramid shape and is made of stainless steel. The clamping heads 10 are matched with the primary clamping grooves 4, the secondary clamping grooves 5 and the tertiary clamping grooves 6. The upper surface and the lower surface of the tray shell 1 are provided with circular through holes at the center, and the diameter of the circular through holes is 2-3 mm larger than that of the circular truncated cone-shaped bottom surface of the chuck 10. No. two high tensile spring 7 length is 1/2 of a high tensile spring 2, and the diameter is the same with a high tensile spring 2, all is 5 ~ 6mm bigger than the circular through-hole diameter of tray shell 1.

During the use, at first, penetrate 8 tip of stock from the lower surface through-hole department of tray shell 1, and pass No. two high tensile spring 7 and tertiary draw-in groove 6 in proper order, second grade draw-in groove 5, the upper surface through-hole of one-level draw-in groove 4 and tray shell 1, then use nut 9 to install fixedly, dop 10 should be in tertiary draw-in groove 6 inside after the installation, when meetting the impact dynamic load, four evenly arranged a high tensile spring 2, No. two high tensile spring 7 and high damping rubber 3 can play effective buffering effect, along with the wall rock deformation increase, the stress constantly increases, dop 10 blocks into second grade draw-in groove 5, one-level draw-in groove 4 from tertiary draw-in groove 6 inside in proper order, thereby realize multistage yielding, avoid the damage of stock tray, effectively guarantee at the anchor effect under the circumstances that the impact ground pressure frequently arises, the.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. The utility model provides a buffering lets die mould stock tray comprises tray shell (1), high tension spring (2), high damping rubber (3), No. two high tension spring (7), stock (8), nut (9), dop (10), draw-in groove (11), its characterized in that: the clamping groove (11) is composed of a first-level clamping groove (4), a second-level clamping groove (5) and a third-level clamping groove (6), the two ends of the first high-strength spring (2) are respectively welded with the upper surface and the lower surface of the tray shell (1), the first high-strength spring and the second high-strength spring (7) are symmetrically arranged at four end points of the upper surface of the tray shell (1), the high-damping rubber (3) is filled in the hollow position in the tray, the clamping groove (11) and the second high-strength spring (7) are both positioned at the central position of the tray shell (1) and are sequentially arranged from top to bottom, the upper surface of the tray shell (1) and the top end of the clamping groove (11), the bottom end of the clamping groove (11) and the top end of the second high-strength spring (7), the bottom end of the second high-strength spring (7) and the lower surface of the tray shell (1) are connected into an integral structure in a, the end part of the anchor rod (8) is connected with the nut (9) through threads.

2. The buffer yielding type anchor rod tray as claimed in claim 1, is characterized in that: the tray shell (1) is in a trapezoidal quadrangular frustum pyramid shape and is made of stainless steel.

3. The buffer yielding type anchor rod tray as claimed in claim 1, is characterized in that: the clamping heads (10) are matched with the primary clamping grooves (4), the secondary clamping grooves (5) and the tertiary clamping grooves (6).

4. The buffer yielding type anchor rod tray as claimed in claim 1, is characterized in that: the central positions of the upper surface and the lower surface of the tray shell (1) are respectively provided with a circular through hole, and the diameter of the circular through hole is 2-3 mm larger than that of the circular truncated cone-shaped bottom surface of the clamping head (10).

5. The buffer yielding type anchor rod tray as claimed in claim 1, is characterized in that: the length of the second high-strength spring (7) is 1/2 of the first high-strength spring (2), the diameter of the second high-strength spring is the same as that of the first high-strength spring (2), and the diameter of the second high-strength spring is 5-6 mm larger than that of the circular through hole of the tray shell (1).