Post-anchor seismic anchor bolt fastening device

Abstract

The present invention relates to the field of anchor bolt technology, and more specifically, to a post-anchoring seismic-resistant anchor bolt fastening device. The post-anchoring seismic-resistant anchor bolt fastening device comprises: an anchor bolt, the anchor bolt passing through the reserved hole of the part to be fixed is anchored on the anchor bottom; an additional damping system, the additional damping system sleeved on the anchor bolt is blocked in the reserved hole of the part to be fixed; a fastener, the fastener connected to the anchor bolt is against the side of the additional damping system away from the anchor bottom. Compared with traditional fasteners, the present invention provides a seismic isolation and energy dissipation mechanism, which can extend the vibration period of the part to be fixed under the action of an earthquake on the one hand, and provide additional hysteresis damping on the other hand, thereby reducing the seismic force of the part to be fixed; while reducing the vibration of the part to be fixed, it also limits the damage and destruction of the anchor itself.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor bolts, and more particularly to a post-anchoring earthquake-resistant anchor bolt fastening device. Background Art

[0002] Post-anchor bolts are widely used to anchor non-structural components to reinforced concrete main structures such as buildings and bridges due to their simple installation process and inherent ability to adapt to construction tolerances. Under earthquake action, anchors may be subjected to tension, shear, or a combination of both, as well as bending; these loads are the result of the acceleration of the main structure under earthquake action to stimulate the movement of non-structural components. Recent earthquake events have shown that non-structural components using post-anchor bolts in the existing technology are severely damaged under earthquakes, and there is a growing demand for how to reduce the damage to non-structural components after earthquakes. Summary of the invention

[0003] The object of the present invention is to provide a post-anchoring earthquake-resistant anchor bolt fastening device, which can effectively solve the problems in the prior art.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] The rear anchoring anti-seismic anchor bolt fastening device comprises:

[0006] Anchor bolts, which pass through the reserved holes of the parts to be fixed and are anchored on the anchor base;

[0007] An additional damping system, which is sleeved on the anchor bolt and is sealed in a reserved hole of the part to be fixed;

[0008] A fastener connected to the anchor bolt abuts against a side surface of the additional damping system away from the anchor bottom.

[0009] The anchor bolt is an expansion anchor bolt or a chemical anchor bolt.

[0010] The additional damping system comprises:

[0011] A stepped sleeve, wherein the end of the stepped sleeve with a smaller diameter is interference-fitted in a reserved hole of the part to be fixed, and the end of the stepped sleeve with a smaller diameter is blocked on a side surface of the part to be fixed away from the anchor bottom;

[0012] A damper is sleeved on the anchor bolt and is cooperatively installed in a sleeve hole that passes through the stepped sleeve.

[0013] The sleeve hole is a tapered hole, and the diameter of the sleeve hole near the anchor bottom is smaller than the diameter of the tapered hole near the fastener end; the damper is a tapered structure, and the damper is interference-fitted in the sleeve hole.

[0014] The end surfaces at both ends of the stepped sleeve are coplanar with the end surfaces at both ends of the damper.

[0015] The stepped sleeve is made of steel.

[0016] The damper is made of high-damping rubber material or lead material.

[0017] The fastener comprises a washer and a nut; the washer is sleeved on the anchor bolt, and one side surface of the washer is blocked on the end surface of the stepped sleeve and the damper away from the anchor bottom; the nut thread is fitted on the anchor bolt to apply torque to tighten on the other side surface of the washer.

[0018] The anchor bolt comprises an externally threaded anchor tube, a control screw, a first expansion head, a push-out mechanism and a chemical agent cartridge; the externally threaded anchor tube passes through a reserved hole of a to-be-fixed part and is anchored on an anchor bottom; the additional damping system and the fastener are cooperatively connected to the externally threaded anchor tube; one end of the control screw is threadedly fitted in an outer end pipe opening of the externally threaded anchor tube, a first expansion head is fixed in the middle of the control screw, and the first expansion head is slidably fitted in the externally threaded anchor tube, a plurality of ejection outlets are evenly arranged around the middle of the externally threaded anchor tube, and one end of a first ejection plate is fixed in each ejection outlet; a plurality of first ejection plates are fixed at the inner ends with push-out mechanisms. block, so that it extends to the outside of multiple top outlets under the top pressure of the first expansion head and presses on the anchor bottom; the other end of the control screw passes through the central through hole of the chemical agent barrel, and the chemical agent barrel is rotatably fitted in the pipe mouth at the inner end of the externally threaded anchor pipe, and a hardener is installed in the chemical agent barrel; the chemical agent barrel is located on the barrel surface of the outer end of the externally threaded anchor pipe, and a plurality of plug-in tubes are evenly arranged around it, and a piece of waterproof barrier paper is glued in each plug-in tube; the other end of the control screw is matched and connected to the top-pressing medicine discharging mechanism, and a plurality of cylindrical piercing rods of the top-pressing medicine discharging mechanism are slidably fitted in a plurality of plug-in tubes; a plurality of medicine leakage grooves are evenly arranged around each cylindrical piercing rod.

[0019] The chemical agent cylinder comprises an annular rotating seat, a connecting column, a cylindrical barrel and a conical barrel; a first plastic retaining ring and a second plastic retaining ring are fixed inside the externally threaded anchor tube; the annular rotating seat is rotatably fitted in a rotating groove between the first plastic retaining ring and the second plastic retaining ring; the lower end of the annular rotating seat is fixedly connected to the cylindrical barrel through a plurality of connecting columns, one end of the cylindrical barrel is slidably fitted inside the externally threaded anchor tube, and the other end of the cylindrical barrel is fixedly connected to the end with a smaller diameter of the conical barrel; the diameter of the other end of the conical barrel is larger than the outer diameter of the externally threaded anchor tube; an expansion sleeve is provided at one end of the externally threaded anchor tube inserted into the anchor bottom, so as to expand under the top pressure of the conical barrel to clamp the inner wall of the anchor bottom;

[0020] The medicine-pressing and discharging mechanism comprises a sliding ring, a first compression spring, a second compression spring, a fixed ring, a pressing sliding shaft, a vertical shaft and an outward-turning clamping plate; the sliding ring is slidingly fitted on the control screw, the sliding ring is connected to the fixing ring through the second compression spring sleeved on the control screw, and the fixing ring is fixed on the control screw; the control screw is located between the sliding ring and the conical cylinder and a first compression spring is sleeved on the rod body; a plurality of pressing sliding shafts are provided, and the plurality of pressing sliding shafts are slidingly fitted in the grooved slideways on the inner sides of a plurality of outward-turning clamping plates, and the plurality of pressing sliding shafts are fixed to the fixing ring through the vertical shaft; one end of a plurality of outward-turning clamping plates is rotatably fitted in a plurality of mounting grooves of the sliding ring; a plurality of cylindrical piercing rods are evenly surrounded and fixed on the sliding ring.

[0021] The embodiments of the present invention bring the following beneficial effects:

[0022] The present invention proposes a post-anchored seismic anchor bolt fastening device, which provides a seismic isolation and energy dissipation mechanism compared with traditional fasteners. Under the action of an earthquake, on the one hand, it can extend the vibration period of the part to be fixed, and on the other hand, it provides additional hysteresis damping, thereby reducing the seismic force of the part to be fixed; while reducing the vibration of the part to be fixed, it also limits the damage to the anchor itself.

[0023] The advantages of the present invention are:

[0024] 1. It has the advantages of easy installation and large installation fault tolerance. The rear anchoring anti-seismic anchor bolt fastening device of the present invention has a simple structure and is suitable for various commonly used expansion anchor bolts and chemical anchor bolts, and has a wide range of applications.

[0025] 2. An additional damping system composed of stepped sleeves and dampers is used; compared with traditional fasteners, it can significantly reduce the acceleration of non-structural components under earthquake action, thereby reducing damage to non-structural components and also reducing damage to the anchor bolts themselves.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0029] Figure 2A usage state diagram provided for an embodiment of the present invention;

[0030] Figure 3 A three-dimensional diagram of a stepped sleeve provided in an embodiment of the present invention;

[0031] Figure 4 A top view of a stepped sleeve provided in an embodiment of the present invention;

[0032] Figure 5 A cross-sectional view of a stepped sleeve provided in an embodiment of the present invention;

[0033] Figure 6 A three-dimensional diagram of a damper provided by an embodiment of the present invention;

[0034] Figure 7 A top view of a damper provided by an embodiment of the present invention;

[0035] Figure 8 A cross-sectional view of a damper provided by an embodiment of the present invention;

[0036] Fig. 9 Schematic diagram of an anchor bolt provided in an embodiment of the present invention Figure 1 ;

[0037] Fig.10 Schematic diagram of an anchor bolt provided in an embodiment of the present invention Figure 2 ;

[0038] Fig.11 A cross-sectional view of an anchor bolt provided in an embodiment of the present invention;

[0039] Fig.12 A schematic diagram of an externally threaded anchor pipe provided in an embodiment of the present invention;

[0040] Fig.13 A schematic diagram of a medicine pressing and discharging mechanism provided in an embodiment of the present invention;

[0041] Fig.14 A schematic diagram of a cylindrical piercing rod provided by an embodiment of the present invention;

[0042] Fig.15 A schematic diagram of a chemical cartridge provided in accordance with an embodiment of the present invention.

[0043] Icons: anchor bolt 1; external threaded anchor pipe 11; first plastic baffle ring 111; second plastic baffle ring 112; control screw 12; first expansion head 13; medicine ejection mechanism 14; cylindrical piercing rod 141; medicine leakage groove 141a; sliding ring 142; first compression spring 143; second compression spring 144; fixing ring 145; pressing sliding shaft 146; vertical shaft 147; outward-turning clamping plate 148; chemical agent barrel 15; plug-in tube 151; annular rotating seat 152; connecting column 153; cylindrical barrel 154; conical barrel 155; first ejection plate 16; pressing block 17; stepped sleeve 2; damper 3; gasket 4; nut 5; part to be fixed 6; anchor bottom 7. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0046] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0048] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this application without affecting the effects that can be produced by this application and the purposes that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the implementation of this application. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of this application without substantial change in the technical content.

[0049] The following is combined with Figure 1-15 The present invention is described in further detail.

[0050] Embodiment 1

[0051] like Figure 1-8 As shown, the rear anchoring anti-seismic anchor bolt fastening device of the present invention comprises:

[0052] Anchor bolt 1, which passes through a reserved hole of a to-be-fixed part 6 and is anchored on an anchor base 7;

[0053] An additional damping system, which is sleeved on the anchor bolt 1 and is sealed in a reserved hole of the part to be fixed 6;

[0054] The fastener connected to the anchor bolt 1 is against the side surface of the additional damping system away from the anchor bottom 7. In the post-anchoring seismic anchor bolt fastening device of the present invention, during installation, the anchor bolt 1 is first passed through the reserved hole of the part to be fixed 6, and then one end of the anchor bolt 1 is anchored on the anchor bottom 7; then the additional damping system is sleeved on the anchor bolt 1, and the additional damping system is controlled to be sealed in the reserved hole of the part to be fixed 6, and finally the fastener is connected to the anchor bolt 1, and the position of the fastener is adjusted to make it tight against the additional damping system, thereby completing the installation of the present invention; the additional damping system is arranged between the anchor bolt 1 and the part to be fixed 6, and in the event of an earthquake or the like, it can provide supplementary hysteresis damping and play a role in buffering and shock absorption. Compared with traditional fasteners, it can significantly reduce the acceleration of non-structural components under earthquake action, thereby reducing damage to non-structural components, and also reducing damage to the anchor bolt itself.

[0055] The anchor bolt 1 is an expansion anchor bolt or a chemical anchor bolt, which is convenient for anchoring on the anchor bottom 7.

[0056] The additional damping system comprises:

[0057] The stepped sleeve 2, the end of the stepped sleeve 2 with a smaller diameter is interference-fitted in the reserved hole of the fixed part 6, and the end of the stepped sleeve 2 with a smaller diameter is blocked on the side of the fixed part 6 away from the anchor bottom 7; thereby achieving stable insertion of the stepped sleeve 2 and the fixed part 6, and can be blocked on the outer surface of the fixed part 6 to prevent it from shifting during installation;

[0058] The damper 3 is sleeved on the anchor bolt 1 and is installed in a sleeve hole penetrating the stepped sleeve 2. The damper 3 cooperates with the stepped sleeve 2 to provide supplementary hysteresis damping, thereby reducing the acceleration and force of the part 6 to be fixed.

[0059] The sleeve hole is a tapered hole, and the diameter of the sleeve hole near the anchor bottom 7 is smaller than the diameter of the tapered hole near the fastener; the damper 3 is a tapered structure, and the damper 3 is interference fit in the sleeve hole. The sleeve hole is a tapered hole, and the damper 3 is a tapered structure. The tapered hole cooperates with the tapered damper 3, making the connection more stable.

[0060] The end surfaces of both ends of the stepped sleeve 2 are coplanar with the end surfaces of both ends of the damper 3 .

[0061] The stepped sleeve 2 is made of steel.

[0062] The damper 3 is made of high damping rubber material or lead material.

[0063] The fastener includes a gasket 4 and a nut 5; the gasket 4 is sleeved on the anchor bolt 1, and one side surface of the gasket 4 is blocked on the end surface of the stepped sleeve 2 and the damper 3 away from the anchor bottom 7; the nut 5 is threadedly fitted on the anchor bolt 1 to apply torque to tighten against the other side surface of the gasket 4.

[0064] Embodiment 2

[0065] like Figure 1-8 As shown, the post-anchored seismic anchor bolt fastening device of the present invention comprises: an anchor bolt 1, a stepped sleeve 2, a damper 3, a gasket 4, a nut 5, a part to be fixed 6 and an anchor bottom 7; when installing, the anchor bolt 1 is fixed to the anchor bottom 7, the stepped sleeve 2 is sleeved on the anchor bolt 1 passing through the part to be fixed 6, the damper 3 is placed in the stepped sleeve 2, and the gasket 4 and the nut 5 are placed above the additional damping system composed of the stepped sleeve 2 and the damper 3; torque is applied, and the part to be fixed 6 is anchored to the anchor bottom 7 through the anchor bolt 1, thereby realizing the overall installation and fixation of the present invention.

[0066] like Figure 3As shown, the purpose of the tapered structure of the stepped sleeve 2 and the damper 3 is to make the additional damping system composed of the stepped sleeve 2 and the damper 3 tighter when the torque is applied to the nut 5, and to reduce the gap between the threaded portion of the anchor 1 and the damper 3 as much as possible, so as to maximize the energy dissipation capacity of the post-anchored seismic anchor fastening device of the present invention; when an earthquake occurs, under the excitation of the anchor bottom 7, the fixed part 6 generates acceleration and force relative to the anchor bottom 7. Due to the presence of the damper 3, the acceleration and force generated by the earthquake can be significantly reduced, thereby protecting the fixed part 6 and the anchor 1, and reducing their damage under the earthquake.

[0067] The anchor bolt 1 is directly anchored to the anchor bottom 7, and the anchor bolt 1 can be an expansion anchor or a chemical anchor;

[0068] The diameter of the hole reserved at the anchor position of the part to be fixed 6 is equal to the outer diameter of the stepped sleeve 2, so that the part to be fixed 6 and the stepped sleeve 2 are highly matched; the outer diameter of the damper 3 is the same as the inner diameter of the stepped sleeve 2, and the damper 3 is placed inside the stepped sleeve 2, so that the damper 3 and the stepped sleeve 2 are highly matched; a hollow cylinder is reserved at the center of the damper 3 for the anchor 1 to pass through, and the diameter of the hollow cylinder is slightly larger than the diameter of the anchor 1, so that a stable connection between the damper 3 and the anchor 1 is achieved.

[0069] The damper 3 is made of high damping rubber or lead.

[0070] Embodiment 3

[0071] like Figure 9-15As shown, the post-anchoring earthquake-resistant anchor bolt fastening device of the present invention, the anchor bolt 1 includes an externally threaded anchor tube 11, a control screw 12, a first expansion head 13, a push-out mechanism 14 and a chemical agent cartridge 15; the externally threaded anchor tube 11 passes through a reserved hole of a to-be-fixed part 6 and is anchored on the anchor bottom 7; the additional damping system and the fastener are cooperatively connected to the externally threaded anchor tube 11; one end of the control screw 12 is threadedly fitted in the outer end pipe opening of the externally threaded anchor tube 11, the first expansion head 13 is fixed in the middle of the control screw 12, the first expansion head 13 is slidably fitted in the externally threaded anchor tube 11, a plurality of ejection outlets are evenly arranged around the middle of the externally threaded anchor tube 11, and one end of a first ejection plate 16 is fixed in each ejection outlet; the inner ends of the plurality of first ejection plates 16 A pressing block 17 is fixed to extend to the outside of multiple top outlets under the top pressure of the first expansion head 13 and press on the anchor bottom 7; the other end of the control screw 12 passes through the central through hole of the chemical cartridge 15, and the chemical cartridge 15 is rotatably fitted in the inner end of the externally threaded anchor tube 11, and a hardener is installed in the chemical cartridge 15; a plurality of plug-in tubes 151 are evenly arranged around the barrel surface of the chemical cartridge 15 located at the outer end of the externally threaded anchor tube 11, and a waterproof barrier paper is glued in each plug-in tube 151; the other end of the control screw 12 is connected to the top-pressing medicine discharging mechanism 14, and a plurality of cylindrical piercing rods 141 of the top-pressing medicine discharging mechanism 14 are slidably fitted in the plurality of plug-in tubes 151; a plurality of medicine leakage grooves 141a are evenly arranged around each cylindrical piercing rod 141.

[0072] When the anchor bolt 1 is in use, the external threaded anchor tube 11 is first passed through the reserved hole of the to-be-fixed part 6, and one end of the anchor bolt 11 is inserted into the drilled hole of the anchor bottom 7; then the control screw 12 is rotated to perform the anchoring process. Since one end of the control screw 12 is threadedly engaged in the outer end pipe mouth of the external threaded anchor tube 11, the contact position of the control screw 12 and the external threaded anchor tube 11 can be changed by rotating the control screw 12. The axis of the external threaded anchor tube 11 is colinear with the axis of the control screw 12. The control screw 12 moves along the axis in the external threaded anchor tube 11, thereby driving the first expansion head 13 and the top-pressing and discharging mechanism 14 to move. The first expansion head 13 is a conical structure. When the first expansion head 13 moves to contact the top pressing blocks 17 at the inner ends of the multiple first ejection plates 16, it can generate an outward thrust on the multiple top pressing blocks 17, thereby driving the multiple first ejection plates 16 to flip and deform outward through the top pressing transmission of the multiple top pressing blocks 17, thereby locking It is blocked in the drill hole of the anchor bottom 7, playing the first anchoring role; when the top-pressing medicine discharging mechanism 14 moves, the multiple cylindrical piercing rods 141 of the top-pressing medicine discharging mechanism 14 slide on the multiple plug-in tubes 151, and pierce the waterproof barrier paper bonded in the multiple plug-in tubes 151, so that the hardener or adhesive inside the chemical cartridge 15 can flow out through the multiple plug-in tubes 151, and each cylindrical piercing rod 141 is evenly surrounded by a plurality of medicine leakage grooves 141a, so that no blockage occurs when the cylindrical piercing rod 141 pierces the waterproof barrier paper, and the hardener or adhesive inside the chemical cartridge 15 can continue to flow out through the plurality of medicine leakage grooves 141a, thereby facilitating the anchor bolt 1 to be anchored on the anchor bottom 7, playing the second anchoring role; anchoring is performed by combining mechanical anchoring with chemical anchoring, and its stability is extremely good. It should be noted that due to the large number of structures of the anchor bolt 1 and the good stability performance, its cost is higher than that of a general anchor bolt.

[0073] The chemical agent barrel 15 comprises an annular rotating seat 152, a connecting column 153, a cylindrical barrel 154 and a conical barrel 155; a first plastic retaining ring 111 and a second plastic retaining ring 112 are fixed inside the external threaded anchor tube 11; the annular rotating seat 152 is rotatably fitted in a rotating groove between the first plastic retaining ring 111 and the second plastic retaining ring 112; the lower end of the annular rotating seat 152 is fixedly connected to the cylindrical barrel 154 through a plurality of connecting columns 153, one end of the cylindrical barrel 154 is slidably fitted inside the external threaded anchor tube 11, and the other end of the cylindrical barrel 154 is fixedly connected to the end with a smaller diameter of the conical barrel 155; the diameter of the other end of the conical barrel 155 is greater than the outer diameter of the external threaded anchor tube 11; an expansion sleeve is provided at one end of the external threaded anchor tube 11 inserted into the anchor bottom 7, so that it expands under the top pressure of the conical barrel 155 to clamp the inner wall of the anchor bottom 7;

[0074] The medicine-pressing mechanism 14 comprises a sliding ring 142, a first compression spring 143, a second compression spring 144, a fixing ring 145, a pressing sliding shaft 146, a vertical shaft 147 and an outward-turning clamping plate 148; the sliding ring 142 is slidably fitted on the control screw 12, the sliding ring 142 is connected to the fixing ring 145 through the second compression spring 144 sleeved on the control screw 12, and the fixing ring 145 is fixed on the control screw 12; the control screw 12 is located on the rod body between the sliding ring 142 and the conical cylinder 155 A first compression spring 143 is sleeved; there are multiple push-up sliding shafts 146, and the multiple push-up sliding shafts 146 are slidably fitted in the groove-shaped slideways on the inner sides of multiple outward-turned clamping plates 148, and the multiple push-up sliding shafts 146 are fixed to the fixed ring 145 through the vertical shaft 147; one end of the multiple outward-turned clamping plates 148 is rotatably fitted in the multiple mounting grooves of the sliding ring 142; a triangular crushing block is fixed on the outer side surface of each outward-turned clamping plate 148; and multiple cylindrical piercing rods 141 are evenly surrounded and fixed on the sliding ring 142.

[0075] The chemical agent barrel 15 can not only be used to store chemical agents for chemical anchoring treatment, but also play a role of mechanical anchoring. After the multiple cylindrical piercing rods 141 of the top-pressing medicine dispensing mechanism 14 pierce the waterproof barrier paper bonded in the multiple plug-in tubes 151 to discharge the chemical agents, the control screw 12 continues to rotate to drive the top-pressing medicine dispensing mechanism 14 to move. After the sliding ring 142 inside the top-pressing medicine dispensing mechanism 14 moves to contact the conical cylinder 155, the first compression spring 143 and the second compression spring 144 have been compressed. At this time, the control screw 12 continues to rotate. The continuous movement can drive the fixing ring 145 to move, and the top pressure sliding shaft 146 fixed on the fixing ring 145 by the vertical shaft 147 can slide in the grooved slideway of the outward-turning clamping plate 148, and generate a certain pressure outward on the outward-turning clamping plate 148, so that the outward-turning clamping plate 148 is clamped in the anchor bottom 7, and a triangular crushing block is fixed on the outer surface of each outward-turning clamping plate 148, which can play a certain degree of cutting effect, so as to reduce the resistance of the outward-turning clamping plate 148 to the anchor bottom 7; multiple outward-turning clamping plates 148 play the role of the third anchor While the multiple outward-turned clamping plates 148 perform the third anchoring, the sliding ring 142 can generate a top pressure on the conical cylinder 155. The conical cylinder 155 is made of alloy steel material with high strength. The conical cylinder 155 drives the cylindrical cylinder 154 to slide in the external threaded anchor pipe 11 under the thrust of the sliding ring 142, and the annular rotating seat 152 fixed at the upper end of the cylindrical cylinder 154 by multiple connecting columns 153 is made of metal material, and the first plastic retaining ring 111 and the second plastic retaining ring 112 are made of deformable plastic. , so that when the cylindrical barrel 154 slides in the externally threaded anchor pipe 11, the annular rotating seat 152 can be driven by the multiple connecting columns 153 to generate pressure on the first plastic retaining ring 111, and disengage from the rotating groove between the first plastic retaining ring 111 and the second plastic retaining ring 112, so that the conical barrel 155 slides into the externally threaded anchor pipe 11 and presses the expansion sleeve at one end of the anchor bottom 7, so that the expansion sleeve expands and clamps the inner wall of the anchor bottom 7, thereby playing the role of the fourth anchoring, making the anchor bolt 1 extremely stable in anchoring.

[0076] During the installation and construction of the rear-anchored seismic anchor fastening device of the present invention, the shear bearing capacity of the combination of different numbers of anchor bolts 1, additional damping systems and fasteners installed in the rear-anchored seismic anchor fastening device of the present invention is calculated by formula one, and the formula one is as follows:

[0077]

[0078] In the formula:

[0079] N is the shear bearing capacity of the rear anchor anti-seismic anchor bolt fastening device of the present invention;

[0080] X is the outer diameter of the anchor bolt 1 in the present invention;

[0081] p is the effective length of the anchor bolt 1 under shear load in the present invention;

[0082] Y is the standard value of the compressive strength of the anchor bottom 7 in the present invention, and the anchor bottom 7 in the present invention adopts a reinforced concrete main structure;

[0083] H is the distance from the anchor bolt 1 to the edge of the anchor bottom 7 in the present invention;

[0084] p B is the shear cone projection area of ​​multiple internal anchor bolts 1 of the present invention;

[0085] D T is the shear cone projection area of ​​an internal anchor bolt 1 of the present invention;

[0086] is the influence coefficient of edge distance ratio on the reduction of shear bearing capacity;

[0087] E is the influence coefficient of the ratio of edge distance to thickness on the reduction of shear bearing capacity;

[0088] D is the shear force eccentricity influence coefficient.

[0089] The above formula 1 can effectively calculate the anti-shear bearing capacity of different numbers of rear-anchored seismic anchor bolt fastening devices. When the rear-anchored seismic anchor bolt fastening device of the present invention is constructed and installed, the number of the combination of the internal anchor bolt 1, the additional damping system and the fastener of the present invention can be selected according to the total weight T of the to-be-fixed part 6 to be carried by the present invention and the workpiece installed on the to-be-fixed part 6, that is, the magnitude of the force to be carried by the rear-anchored seismic anchor bolt fastening device.

[0090] When T>N, that is, the total weight T that needs to be carried by the present invention is greater than the shear bearing capacity N of the rear-anchored seismic anchor fastening device of the present invention, at this time, it is necessary to increase the number of combinations of anchor bolts 1, additional damping systems and fasteners installed on the anchor bottom 7, so as to improve the shear bearing capacity of the rear-anchored seismic anchor fastening device of the present invention;

[0091] When T=N, the total weight T that needs to be carried by the present invention is equal to the shear bearing capacity N of the rear anchor anti-seismic anchor bolt fastening device of the present invention. At this time, although the rear anchor anti-seismic anchor bolt fastening device can carry the workpiece, when vibration or other external forces affect the workpiece, its stability is still greatly affected, and its safety is yet to be determined;

[0092] When T<N, that is, the total weight T that needs to be carried by the present invention is equal to the shear bearing capacity N of the rear-anchored seismic-resistant anchor bolt fastening device of the present invention. At this time, the rear-anchored seismic-resistant anchor bolt fastening device can carry the workpiece, and has relatively high stability and good safety.

[0093] In the formula, Y is the standard value of the compressive strength of the anchor bottom 7 in the present invention, that is, the strength of the anchor bottom 7. In the present invention, the anchor bottom 7 adopts a reinforced concrete main structure, that is, the strength Y of the reinforced concrete main structure.

[0094] In the present invention, the strength Y of the reinforced concrete main structure of the anchor bottom 7 is calculated by Formula 2, and Formula 2 is as follows:

[0095] Y=Y a +Y b

[0096] Y a =F*T*M÷J

[0097] In the formula:

[0098] Y a is the compressive strength of concrete in the reinforced concrete main structure;

[0099] Y b is the compressive strength of the steel bars in the reinforced concrete main structure;

[0100] F is the bending strength of the steel bar;

[0101] T is the cross-sectional area of ​​the steel bar;

[0102] M is the cross-sectional height of the internal reinforced concrete main structure of the present invention;

[0103] J is the spacing between adjacent steel bars in the reinforced concrete main structure.

[0104] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

[0105] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. The rear anchoring seismic anchor bolt fastening device is characterized in that: include: An anchor bolt (1), the anchor bolt (1) passing through a reserved hole of a to-be-fixed member (6) being anchored on an anchor base (7); An additional damping system, the additional damping system being sleeved on the anchor bolt (1) and sealing in a reserved hole of the part to be fixed (6); A fastener, the fastener being connected to the anchor bolt (1) and abutting against a side surface of the additional damping system away from the anchor bottom (7); The anchor bolt (1) comprises an externally threaded anchor tube (11), a control screw (12), a first expansion head (13), a push-out mechanism (14) and a chemical agent cartridge (15); the externally threaded anchor tube (11) passes through a reserved hole of a to-be-fixed component (6) and is anchored on an anchor bottom (7); the additional damping system and the fastener are connected to the externally threaded anchor tube (11); one end of the control screw (12) is threadedly fitted into an outer end of the externally threaded anchor tube (11), a first expansion head (13) is fixed in the middle of the control screw (12), and the first expansion head (13) is slidably fitted in the externally threaded anchor tube (11); a plurality of ejection outlets are evenly arranged around the middle of the externally threaded anchor tube (11), and one end of a first ejection plate (16) is fixed in each ejection outlet; and a push-out block (17) is fixed at the inner end of each of the plurality of first ejection plates (16). , so that it extends to the outside of the multiple top outlets under the top pressure of the first expansion head (13) and presses on the anchor bottom (7); the other end of the control screw (12) passes through the central through hole of the chemical agent barrel (15), and the chemical agent barrel (15) is rotatably fitted in the inner end pipe opening of the externally threaded anchor pipe (11), and a hardener is installed in the chemical agent barrel (15); a plurality of plug-in tubes (151) are evenly arranged around the barrel surface of the chemical agent barrel (15) located at the outer end of the externally threaded anchor pipe (11), and a waterproof barrier paper is bonded inside each plug-in tube (151); the other end of the control screw (12) is cooperatively connected to the top pressure medicine discharging mechanism (14), and a plurality of cylindrical piercing rods (141) of the top pressure medicine discharging mechanism (14) are slidably fitted in the plurality of plug-in tubes (151); a plurality of medicine leakage grooves (141a) are evenly arranged around each cylindrical piercing rod (141); The chemical agent barrel (15) comprises an annular rotating seat (152), a connecting column (153), a cylindrical barrel (154) and a conical barrel (155); a first plastic retaining ring (111) and a second plastic retaining ring (112) are fixed inside the external threaded anchor tube (11); the annular rotating seat (152) is rotatably engaged in a rotating groove between the first plastic retaining ring (111) and the second plastic retaining ring (112); the lower end of the annular rotating seat (152) is connected to the first plastic retaining ring (111) and the second plastic retaining ring (112) by a plurality of connecting columns (153). The cylindrical body (154) is fixedly connected to the cylindrical body (154), one end of the cylindrical body (154) is slidably fitted inside the external threaded anchor pipe (11), and the other end of the cylindrical body (154) is fixedly connected to the end of the tapered body (155) with a smaller diameter; the diameter of the other end of the tapered body (155) is larger than the outer diameter of the external threaded anchor pipe (11); an expansion sleeve is provided at one end of the external threaded anchor pipe (11) inserted into the anchor base (7), so as to expand under the top pressure of the tapered body (155) to clamp the inner wall of the anchor base (7); The medicine-pressing mechanism (14) comprises a sliding ring (142), a first compression spring (143), a second compression spring (144), a fixing ring (145), a pressing sliding shaft (146), a vertical shaft (147) and an outward-turning clamping plate (148); the sliding ring (142) is slidably fitted on the control screw (12); the sliding ring (142) is connected to the fixing ring (145) through the second compression spring (144) sleeved on the control screw (12); the fixing ring (145) is fixed on the control screw (12); the control screw (12) is located between the sliding ring (142) and the conical cylinder (155). ) are sleeved on the rod body between the two ends; a plurality of top-pressing sliding shafts (146) are provided, and the plurality of top-pressing sliding shafts (146) are slidably fitted in the groove-shaped slideways on the inner sides of the plurality of outward-turning clamping plates (148), and the plurality of top-pressing sliding shafts (146) are fixed to the fixing ring (145) through the vertical shaft (147); one end of the plurality of outward-turning clamping plates (148) is rotatably fitted in the plurality of mounting grooves of the sliding ring (142); a triangular crushing block is fixed on the outer side surface of each outward-turning clamping plate (148); and a plurality of cylindrical piercing rods (141) are evenly surrounded and fixed on the sliding ring (142).

2. The rear anchor anti-seismic anchor bolt fastening device according to claim 1, characterized in that: The additional damping system comprises: A stepped sleeve (2), wherein the end of the stepped sleeve (2) with a smaller diameter is interference-fitted in a reserved hole of the part to be fixed (6), and the end of the stepped sleeve (2) with a smaller diameter is blocked on a side surface of the part to be fixed (6) away from the anchor bottom (7); A damper (3), wherein the damper (3) is sleeved on the anchor bolt (1) and is cooperatively installed in a sleeve hole that penetrates the stepped sleeve (2).

3. The rear anchor anti-seismic anchor bolt fastening device according to claim 2, characterized in that: The sleeve hole is a tapered hole, and the diameter of the sleeve hole at one end close to the anchor bottom (7) is smaller than the diameter of the tapered hole at one end close to the fastener; the damper (3) is a tapered structure, and the damper (3) is interference-fitted in the sleeve hole.

4. The rear anchor anti-seismic anchor bolt fastening device according to claim 3, characterized in that: The end surfaces at both ends of the stepped sleeve (2) are coplanar with the end surfaces at both ends of the damper (3).

5. The rear anchor anti-seismic anchor bolt fastening device according to claim 3, characterized in that: The stepped sleeve (2) is made of steel.

6. The rear anchor anti-seismic anchor bolt fastening device according to claim 3, characterized in that: The damper (3) is made of high-damping rubber material or lead material.

7. The rear anchor anti-seismic anchor bolt fastening device according to claim 3, characterized in that: The fastener comprises a washer (4) and a nut (5); the washer (4) is sleeved on the anchor bolt (1), and one side surface of the washer (4) is blocked on the end surface of the stepped sleeve (2) and the damper (3) away from the anchor bottom (7); the nut (5) is threadedly engaged on the anchor bolt (1) to apply torque to tighten against the other side surface of the washer (4).

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