Safety protection device of yielding anchor rod

Abstract

The invention relates to the technical field of anchor rods, in particular to a safety protection device of a yielding anchor rod, which comprises an inner sleeve rod and an outer sleeve rod, the inner sleeve rod is inserted in the outer sleeve rod, one end of the inner sleeve rod is connected with a guide cylinder, and an auxiliary insertion rod assembly is movably arranged on the guide cylinder; a plurality of notches are distributed in the outer portion of the outer sleeve rod in an annular array mode, and the positions of the notches are matched with the positions of the auxiliary insertion rod assemblies. When the inner sleeve rod extends towards the inner side of the outer sleeve rod, the auxiliary insertion rod assembly penetrates through the notch and extends to the outer side of the outer sleeve rod. After the anchor rod is inserted into a preset depth, the connecting rod in the anchor rod extends into a soil layer in an umbrella shape, so that the contact area between the connecting rod and the soil is possibly increased due to the fact that the surface area of the part entering the soil is large, the friction force and the bonding strength are improved, and the stability of the anchor rod is improved.

Description

Technical Field

[0001] The invention relates to the technical field of anchor rods, and in particular to a safety protection device for a pressure anchor rod. Background Art

[0002] The yield bolt is a special bolt. Its application in coal mine tunnels and other projects can effectively adapt to the large deformation characteristics of the surrounding rock and improve the stability and safety of the support system. The design of the yield bolt usually includes components such as the bolt body, the yield device, the tray and the nut. The yield device is a key component for achieving automatic yield. It can automatically release part or all of the support resistance when the surrounding rock deforms, avoiding the bolt from being broken, while maintaining effective constraints on the surrounding rock.

[0003] When the anchor rod needs to be fixed in a wet and soft coal mine or underground, the anchor rod needs to be inserted into the soft soil layer.

[0004] In the prior art, when the anchor rod is inserted into the soft soil layer, the overall stability and supporting force of the equipment cannot be effectively guaranteed after the anchor rod is inserted, resulting in accidents due to the harsh environment during the actual use of the overall structure. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a safety protection device for a pressure anchor rod.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A safety protection device for a yield anchor rod is designed, comprising an inner sleeve rod and an outer sleeve rod, wherein the inner sleeve rod is inserted into the outer sleeve rod:

[0008] One end of the inner sleeve rod is connected to a guide cylinder, and an auxiliary plug rod assembly is movably arranged on the guide cylinder;

[0009] The outer portion of the outer sleeve is provided with a plurality of notches in a circular array, and the positions of the notches match the positions of the auxiliary insertion rod components;

[0010] When the inner sleeve rod extends toward the inner side of the outer sleeve rod, the auxiliary insertion rod assembly passes through the notch and extends to the outer side of the outer sleeve rod.

[0011] Preferably, the auxiliary insertion rod assembly includes a hinge, a support plate and a connecting rod;

[0012] The support plate is hinged to the outer side of the guide cylinder through a hinge, and the support plate and the connecting rod are movably connected.

[0013] Preferably, a positioning cylinder is horizontally installed at one inner end of the outer sleeve rod, a fixing seat is installed on the outer side of the positioning cylinder, and the fixing seat and the connecting rod cooperate with each other.

[0014] Preferably, a gear box is provided at the connection between the connecting rod and the support plate;

[0015] The gear box is symmetrically provided with a second gear inside, and the gear box is also provided with a first gear inside, and the first gear is meshed with the second gear respectively;

[0016] The outer side of the gear box is connected to the upper part of the support plate.

[0017] Preferably, a fastener is installed on the upper part of the second gear, and is connected to the connecting rod through the fastener;

[0018] A slot hole is provided on one side of the gear box close to the connecting rod, and the connecting rod passes through the slot hole and extends to the outside of the gear box.

[0019] Preferably, a buckle assembly is provided between the support plate and the positioning cylinder;

[0020] The buckle assembly comprises a first clamping assembly mounted on the positioning cylinder and a second clamping assembly mounted on the support plate.

[0021] Preferably, the first engaging assembly includes a bracket, a notch, a rocker, a first buckle and a hinge column;

[0022] The bracket is installed on the outside of the positioning cylinder;

[0023] The notch is provided at the upper middle end of the bracket;

[0024] The rocker is hinged to the inner side of the notch through a hinge column;

[0025] A first buckle is installed on the upper part of the seesaw.

[0026] Preferably, the second engaging assembly comprises a connecting plate and a second buckle;

[0027] The connecting plate is mounted on the supporting plate, and the second buckle is mounted on the connecting plate.

[0028] Preferably, the second buckle cooperates with the first buckle.

[0029] Preferably, when the guide cylinder moves toward the positioning cylinder, the guide cylinder can be slidably disposed on the outside of the positioning cylinder.

[0030] The invention provides a safety protection device for a pressure-yielding anchor rod, which has the beneficial effect that after the anchor rod is inserted to a predetermined depth, the internal connecting rod thereof can be extended into the soil layer in an umbrella shape. In this way, a larger surface area of ​​the part entering the soil may increase the contact area with the soil, thereby increasing friction and bonding strength, which helps to improve the stability of the anchor rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a schematic structural diagram of a safety protection device for a yield anchor rod.

[0032] Figure 2 This is a structural front view of a safety protection device for a yield anchor rod proposed by the present invention.

[0033] Figure 3 A top view of the structure of a safety protection device for a yield anchor rod proposed by the present invention.

[0034] Figure 4 This is a structural schematic diagram of the back side of a safety protection device for a yield anchor rod proposed by the present invention.

[0035] Figure 5 for Figure 1 An enlarged structural view of part A of a proposed safety protection device for a compression anchor rod.

[0036] Figure 6 for Figure 2 An enlarged structural diagram of part B of a proposed safety protection device for a compression anchor rod.

[0037] Figure 7 This is a schematic diagram of the internal structure of a gear box of a safety protection device for a yield anchor rod proposed by the present invention.

[0038] In the figure: inner sleeve rod 1, outer sleeve rod 2, notch 3, guide cylinder 4, positioning cylinder 5, fixing seat 6, first engaging assembly 7, bracket 71, notch 72, rocker 73, first buckle 74, hinge column 75, connecting plate 8, gear box 9, connecting rod 10, support plate 11, hinge 12, first gear 13, second buckle 14, slot 15, second gear 16, fastener 17. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Example 1

[0041] Reference Figure 1-4A safety protection device for a pressure anchor rod comprises an inner sleeve rod 1 and an outer sleeve rod 2, wherein the inner sleeve rod 1 is inserted into the outer sleeve rod 2:

[0042] One end of the inner sleeve rod 1 is connected to a guide cylinder 4, and an auxiliary rod assembly is movably arranged on the guide cylinder 4;

[0043] A plurality of notches 3 are distributed in a circular array on the outside of the outer sleeve 2, and the positions of the notches 3 match the positions of the auxiliary insertion rod components;

[0044] When the inner sleeve rod 1 extends toward the inner side of the outer sleeve rod 2, the auxiliary insertion rod assembly passes through the notch 3 and extends to the outer side of the outer sleeve rod 2;

[0045] The auxiliary insertion rod assembly includes a hinge 12, a support plate 11 and a connecting rod 10;

[0046] The support plate 11 is hinged to the outer side of the guide cylinder 4 through a hinge 12, and the support plate 11 and the connecting rod 10 are movably connected;

[0047] A positioning cylinder 5 is horizontally installed at one end of the inner side of the outer sleeve 2 , and a fixing seat 6 is installed on the outer side of the positioning cylinder 5 , and the fixing seat 6 and the connecting rod 10 cooperate with each other.

[0048] The equipment is used to extend the outer rod 2 into the soft soil layer. When the outer rod 2 reaches a predetermined depth, the operator inserts the inner rod 1 into the inner side of the outer rod 2 and slides it toward the distal end along the inner side of the outer rod 2. When the guide cylinder 4 on one side of the inner rod 1 approaches the position of the positioning cylinder 5, the fixing seat 6 arranged on the outer side of the positioning cylinder 5 will contact the connecting rod 10. As the inner rod 1 continuously moves forward, the connecting rod 10 will pass through the notch 3 and extend into the soft soil layer outside. Multiple connecting rods 10 are distributed in the soil layer in the form of an umbrella frame. In this way, the larger surface area of ​​the part entering the soil may increase its contact area with the soil, thereby increasing friction and bonding strength, which helps to improve the stability of the anchor rod.

[0049] Example 2

[0050] Since the connecting rod 10 needs to reach a predetermined position from the inner side of the outer rod 2 before it can extend to the outer side, the connecting rod 10 adopts a movable connection method, that is, the support plate 11 at the bottom of the connecting rod 10 is connected through a hinge 12. When the connecting plate 10 extends into the soil layer, if the connecting plate 10 continues to rotate, the expected stability effect will be reduced.

[0051] refer to Figure 5-6 , the difference between this embodiment and embodiment 1 is that a buckle assembly is provided between the support plate 11 and the positioning cylinder 5;

[0052] The buckle assembly includes a first clamping assembly 7 installed on the positioning tube 5 and a second clamping assembly installed on the support plate 11 .

[0053] The first engaging assembly 7 includes a bracket 71, a notch 72, a rocker plate 73, a first buckle 74 and a hinge post 75;

[0054] The bracket 71 is installed on the outside of the positioning cylinder 5;

[0055] The notch 72 is provided at the upper middle end of the bracket 71;

[0056] The rocker plate 73 is hinged to the inner side of the slot 72 via a hinge column 75;

[0057] A first buckle 74 is installed on the upper portion of the rocker plate 73 .

[0058] The second clamping assembly includes a connecting plate 8 and a second buckle 14;

[0059] The connecting plate 8 is mounted on the supporting plate 11 , and the second buckle 14 is mounted on the connecting plate 8 .

[0060] The second buckle 14 and the first buckle 74 cooperate with each other.

[0061] When the guide cylinder 4 moves toward the positioning cylinder 5 , the guide cylinder 4 can be slidably disposed outside the positioning cylinder 5 .

[0062] When the inner sleeve 1 is pulled outward, the second locking clasp 14 and the first locking clasp 14 are in contact with each other, and the locking clasp 14 is in contact with the locking clasp 14, so that the locking clasp 14 is in contact with the locking clasp 14.

[0063] Example 3

[0064] Since the soil layer contains hard stones, when the connecting plate 10 encounters a hard stone during the process of adjusting the angle, the connecting rod 10 cannot bypass the stone, which will cause the connecting rod 10 to be unable to rotate to the predetermined angle.

[0065] refer to Figure 7 The difference between this embodiment and the embodiments 1 and 2 is that a gear box 9 is provided at the connection between the connecting rod 10 and the supporting plate 11;

[0066] The gear box 9 is symmetrically provided with a second gear 16, and the gear box 9 is also provided with a first gear 13, and the first gear 13 is meshed with the second gear 16 respectively;

[0067] The outer side of the gear box 9 and the upper part of the support plate 11 are connected to each other.

[0068] A fastener 17 is installed on the upper portion of the second gear 16, and is connected to the connecting rod 10 through the fastener 17;

[0069] A slot hole 15 is formed on one side of the gear box 9 close to the connecting rod 10 . The connecting rod 10 passes through the slot hole 15 and extends to the outside of the gear box 9 .

[0070] To this end, the connecting rods 10 are arranged in groups of two, and two groups of rotating second gears 16 are arranged on the inner side of the gear box 9. The two second gears 16 do not mesh with each other, and the two second gears 16 are respectively meshed with the first gears 13. In this way, when the connecting plate 10 encounters a hard stone, an internal force is generated during the contact with the stone, and the force is fed back to the connecting rod 10, causing the connecting rod 10 to rotate. In this way, the two connecting rods 10 can be effectively controlled to translate along the direction of the slot 15 to avoid the stone. Another advantage of this design is that the two connecting rods 10 are in different planes, which further improves the stability of the anchor rod.

[0071] The principle of the device is:

[0072] The equipment is used to extend the outer rod 2 into the soft soil layer. When the outer rod 2 reaches a predetermined depth, the operator inserts the inner rod 1 into the inner side of the outer rod 2 and slides it toward the distal end along the inner side of the outer rod 2. When the guide cylinder 4 on one side of the inner rod 1 approaches the position of the positioning cylinder 5, the fixing seat 6 arranged on the outer side of the positioning cylinder 5 will contact the connecting rod 10. As the inner rod 1 continuously moves forward, the connecting rod 10 will pass through the notch 3 and extend into the soft soil layer outside. Multiple connecting rods 10 are distributed in the soil layer in the form of an umbrella frame. In this way, the larger surface area of ​​the part entering the soil may increase its contact area with the soil, thereby increasing friction and bonding strength, which helps to improve the stability of the anchor rod.

[0073] Since the connecting rod 10 needs to reach a predetermined position from the inner side of the outer rod 2 before it can extend to the outer side, the connecting rod 10 adopts a movable connection method, that is, the support plate 11 at the bottom of the connecting rod 10 is connected through a hinge 12. When the connecting plate 10 extends into the soil layer, if the connecting plate 10 continues to rotate, the expected stability effect will be reduced.

[0074] When the inner sleeve 1 is pulled outward, the second locking clasp 14 and the first locking clasp 14 are in contact with each other, and the locking clasp 14 is in contact with the locking clasp 14, so that the locking clasp 14 is in contact with the locking clasp 14.

[0075] Since the soil layer contains hard stones, when the connecting plate 10 encounters a hard stone during the process of adjusting the angle, the connecting rod 10 cannot bypass the stone, which will cause the connecting rod 10 to be unable to rotate to the predetermined angle.

[0076] To this end, the connecting rods 10 are arranged in groups of two, and two groups of rotating second gears 16 are arranged on the inner side of the gear box 9. The two second gears 16 do not mesh with each other, and the two second gears 16 are respectively meshed with the first gears 13. In this way, when the connecting plate 10 encounters a hard stone, an internal force is generated during the contact with the stone, and the force is fed back to the connecting rod 10, causing the connecting rod 10 to rotate. In this way, the two connecting rods 10 can be effectively controlled to translate along the direction of the slot 15 to avoid the stone. Another advantage of this design is that the two connecting rods 10 are in different planes, which further improves the stability of the anchor rod.

[0077] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safety protection device for a pressure anchor rod, comprising an inner sleeve rod (1) and an outer sleeve rod (2), wherein the inner sleeve rod (1) is inserted into the outer sleeve rod (2). Features: One end of the inner sleeve rod (1) is connected to a guide cylinder (4), and an auxiliary rod insertion assembly is movably arranged on the guide cylinder (4); The outer portion of the outer sleeve rod (2) is provided with a plurality of notches (3) distributed in a circular array, and the positions of the notches (3) match the positions of the auxiliary insertion rod components; When the inner sleeve rod (1) extends toward the inside of the outer sleeve rod (2), the auxiliary insertion rod assembly penetrates the notch (3) and extends to the outside of the outer sleeve rod (2).

2. The safety protection device for the pressure anchor rod according to claim 1, It is characterized in that The auxiliary insertion rod assembly comprises a hinge (12), a support plate (11) and a connecting rod (10); The support plate (11) is hinged to the outside of the guide cylinder (4) via a hinge (12), and the support plate (11) and the connecting rod (10) are movably connected.

3. The safety protection device for the pressure anchor rod according to claim 2, It is characterized in that A positioning cylinder (5) is horizontally mounted on one inner end of the outer sleeve rod (2), a fixing seat (6) is mounted on the outer side of the positioning cylinder (5), and the fixing seat (6) and the connecting rod (10) cooperate with each other.

4. The safety protection device for the yield anchor according to claim 3, It is characterized in that A gear box (9) is provided at the connection between the connecting rod (10) and the supporting plate (11); The gear box (9) is symmetrically provided with a second gear (16), and the gear box (9) is also provided with a first gear (13), and the first gear (13) is meshed with the second gear (16) respectively; The outer side of the gear box (9) is connected to the upper part of the support plate (11).

5. The safety protection device for the pressure anchor rod according to claim 4, It is characterized in that A fastener (17) is installed on the upper part of the second gear (16), and the second gear (16) is connected to the connecting rod (10) via the fastener (17); A slot hole (15) is provided on one side of the gear box (9) close to the connecting rod (10), and the connecting rod (10) passes through the slot hole (15) and extends to the outside of the gear box (9).

6. The safety protection device for the yield anchor according to claim 5, It is characterized in that A buckle assembly is provided between the support plate (11) and the positioning cylinder (5); The buckle assembly comprises a first snap-fit ​​assembly (7) mounted on the positioning cylinder (5) and a second snap-fit ​​assembly mounted on the support plate (11).

7. The safety protection device for the pressure anchor rod according to claim 6, It is characterized in that The first engaging assembly (7) comprises a bracket (71), a notch (72), a rocker plate (73), a first buckle (74) and a hinge column (75); The bracket (71) is installed on the outside of the positioning cylinder (5); The notch (72) is provided at the upper middle end of the bracket (71); The rocker plate (73) is hinged to the inner side of the slot (72) via a hinge column (75); A first buckle (74) is installed on the upper part of the seesaw (73).

8. The safety protection device for the pressure anchor rod according to claim 7, It is characterized in that The second snap-fit ​​assembly comprises a connecting plate (8) and a second snap buckle (14); The connecting plate (8) is mounted on the supporting plate (11), and the second buckle (14) is mounted on the connecting plate (8).

9. The safety protection device for the yield anchor according to claim 8, It is characterized in that The second buckle (14) and the first buckle (74) cooperate with each other.

10. The safety protection device for the pressure anchor rod according to claim 7, It is characterized in that When the guide cylinder (4) moves in the direction of the positioning cylinder (5), the guide cylinder (4) can be slidably arranged on the outside of the positioning cylinder (5).

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