An emergency easy-to-disassemble and adjustable self-anchoring connection device

Abstract

The present invention relates to the technical field of bridge engineering, and discloses an emergency easily disassembled and adjustable self-anchored connection device, including: an adjustable connection device, which includes an adjustment component and a housing component; the adjustment component includes a reel, two groups of wire rope components and two connecting arms. One ends of the two groups of wire rope components are both connected to the reel, and each group of wire rope components can be wound and unwound on the reel. The other end of each wire rope component is respectively connected with an anchor head. The two connecting arms are respectively fixed on the two groups of wire rope components. Two or more first limiting holes are provided on each connecting arm, and second limiting holes are respectively provided on both sides of the reel on the housing component. A plug pin is inserted into the first limiting hole and the second limiting hole to fix the connecting arm, so as to realize the adjustability of the connection device. The present invention is used for the emergency connection of bridge suspenders and the temporary connection of structural members.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge engineering, and particularly relates to an emergency, easily disassembled, adjustable self-anchored connection device. Background Art

[0002] With the development of the bridge industry, the structures and forces of bridge systems have become increasingly diverse and complex. While the bridge industry is booming, sudden problems are also increasing. Therefore, the mobility of bridge maintenance and emergency maintenance in the event of sudden accidents needs to be further optimized.

[0003] As the service life of bridges extends, the number of bridge accidents caused by the fracture and detachment of suspenders has gradually increased. As one of the main load-bearing components of suspension bridges, suspenders are usually made of high-strength galvanized parallel steel wires. As the service time of the steel wires extends, the ductility of the steel wires becomes worse, the brittleness increases, and their fatigue resistance performance also deteriorates, making them prone to fatigue fracture. On the other hand, as the bridge span continues to increase, the self-weight of the main girder and the vehicle load also increase, and the problem of fatigue fracture of the steel wires in the bridge cable system will become more and more prominent. Therefore, it is necessary to timely adjust and replace the suspenders according to the actual damage, corrosion conditions and wire breakage conditions. Among them, in the face of sudden accidents such as the detachment and fracture of suspenders, it is necessary to carry out emergency treatment at the place where the suspender falls off or breaks, and make an emergency connection at the suspender to avoid the danger brought by sudden accidents. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide an emergency, easily disassembled, adjustable self-anchored connection device for the emergency connection of bridge suspenders and the temporary connection of structural components, aiming at the problem that problems are likely to occur at the suspenders for bearing weight on bridges as the service time of bridges increases, and it is necessary to timely make an emergency connection at the bridge suspenders when the suspenders fall off or break.

[0005] To solve the above technical problem, the technical solution of the present invention is: an emergency, easily disassembled, adjustable self-anchored connection device, comprising:

[0006] An adjustable connection device, the adjustable connection device comprising an adjustment component and a housing component; the adjustment component comprises a reel, two groups of wire rope components and two connecting arms, and the two groups of wire rope components are respectively located on both sides of the reel; one end of each group of wire rope components is connected to the reel, and each group of wire rope components can be wound and unwound on the reel; the two connecting arms are respectively fixed on the two groups of wire rope components;

[0007] A cavity is provided inside the housing assembly, the adjusting assembly is located inside the cavity, and the reel is rotatably mounted on the housing assembly; each of the connecting arms can approach or move away from the reel inside the cavity; two or more first limiting holes are provided on each of the connecting arms, and the first limiting holes are spaced apart in a direction away from or close to the reel; second limiting holes are respectively provided on both sides of the reel on the housing assembly; the first limiting holes can correspond to the second limiting holes.

[0008] It further includes a bolt which can be inserted into the first limiting holes and the second limiting holes to fix the connecting arm to the housing assembly; the other ends of the wire rope assemblies are respectively connected with anchor heads.

[0009] Further, the housing assembly includes a first clamping plate and a second clamping plate which are oppositely arranged, the first clamping plate and the second clamping plate are fixedly connected, and the cavity is formed between the first clamping plate and the second clamping plate.

[0010] Further, tooth-shaped concave and convex grooves are provided on the opposite sides of the first clamping plate and the second clamping plate, and the tooth-shaped concave and convex grooves on the first clamping plate are engaged with the tooth-shaped concave and convex grooves on the second clamping plate.

[0011] Further, the number of the second limiting holes on both sides of the reel is two or more; the second limiting holes are spaced apart in a direction away from or close to the reel.

[0012] Further, each of the wire rope assemblies includes a first wire rope and a second wire rope. One end of the first wire rope is connected with the reel, the first wire rope can be wound or unwound on the reel, and the other end of the first wire rope is connected with one end of the connecting arm; one end of the second wire rope is connected with the other end of the connecting arm, and the other end of the second wire rope is connected with the anchor head.

[0013] Further, an installation hole is penetrated through the anchor head, and a first clamping member is provided inside the installation hole.

[0014] Further, a through hole is penetrated through the anchor head, a second clamping member is provided inside the through hole, and the other end of the wire rope assembly passes through the through hole and is clamped on the second clamping member.

[0015] Further, the number of the through holes is two or more, the through holes are evenly distributed with the installation hole as the center, and a second clamping member is provided inside each of the through holes. The other end of the wire rope assembly is divided into two or more bundles of wires, and each bundle of the wires respectively passes through each of the through holes and is clamped on each of the second clamping members.

[0016] Further, the anchor head includes a first anchor block and a second anchor block. The first anchor block and the second anchor block are spliced with each other and fixedly connected to each other through a connecting member to form the anchor head.

[0017] Further, it further includes a hoop. The hoop is sleeved on the first anchor block and the second anchor block to reinforce the anchor head.

[0018] The beneficial effects achieved by the present invention are mainly as follows:

[0019] (1) The present invention includes an adjustable connection device and an anchor head. The anchor head is connected to both ends of the adjustable connection device. The anchor head and the connection device are integrally designed to form a semi-permanent structure. Compared with the independent setting of the connection device and the anchor head, the technical solution disclosed by the present invention does not need to be disassembled and assembled, is convenient to be directly used in the project, can achieve rapid installation, and is convenient for saving project operation time.

[0020] (2) In the present invention, the adjustable connection device includes an adjustment component and a housing component. The adjustment component includes a reel, two groups of wire rope components and two connecting arms. By rotating the reel, the wire rope components can be extended and shortened. Among them, the housing component can provide a large steel bundle telescopic range for the wire rope components, so as to adjust the length of the entire connection device, and the operation is convenient; at the same time, two or more first limiting holes are provided on each connecting arm, and a second limiting hole is provided on the housing component. After the length of the connection device is adjusted, the pin is inserted into the first limiting hole and the second limiting hole on the connecting arm, so as to fix the adjustment component to realize the adjustability of the connection device to adapt to different application scenarios. It has a wide application range and strong adaptability. Especially during the emergency use of the project, the connection device can be quickly assembled in place, can be applied to multiple application scenarios, and after the repair is completed, there is no need to disassemble the connection device, and the construction and repair efficiency is high. The connection device can be reused repeatedly to save project costs.

[0021] (3) When the technical solution disclosed by the present invention is used, multiple bundles of steel wires at the other end of the wire rope component act on the anchor head. When each bundle of steel wires bears the tensile force, it will generate a force acting on the first anchor block and the second anchor block towards the center of the anchor head, so as to form a self-pressurizing system for the anchor head to reinforce the anchor head formed by the butt joint of the first anchor block and the second anchor block, and improve the fastening of the overall connection of the anchor head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the emergency and easily disassembled and adjustable self-anchoring connection device in the embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of the adjustable connection device in the emergency and easily disassembled and adjustable self-anchoring connection device in the embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the overall structure of the adjustment component in the emergency, easily disassembled and adjustable self-anchoring connection device in the embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall structure of the housing component in the emergency, easily disassembled and adjustable self-anchoring connection device in the embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the overall structure of the anchor head in the emergency, easily disassembled and adjustable self-anchoring connection device in the embodiment of the present invention;

[0027] Figure 6 This is a top view of the anchor head in the emergency, easily disassembled and adjustable self-anchoring connection device in the embodiment of the present invention.

[0028] Reference numerals in the accompanying drawings of the specification include: 1 - adjustable connection device; 2 - adjustment component; 201 - reel; 202 - wire rope assembly; 2021 - first wire rope; 2022 - second wire rope; 203 - connecting arm; 3 - housing component; 301 - first clamping plate; 302 - second clamping plate; 4 - first limiting hole; 5 - second limiting hole; 6 - pin; 7 - anchor head; 701 - first anchor block; 702 - second anchor block; 8 - toothed concave and convex groove; 9 - mounting hole; 10 - first clamping member; 11 - through hole; 12 - second clamping member; 13 - connecting member; 14 - hoop; 15 - pull rod.

[0029] The drawings are only for illustrative purposes and should not be construed as a limitation of this patent; for better illustration of this embodiment, some components in the drawings are omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent. Detailed implementation manners

[0030] For the convenience of those skilled in the art to understand, the present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0031] Embodiment 1

[0032] An emergency, easily disassembled and adjustable self-anchoring connection device is used to solve the problem that as the service time of the bridge increases, problems are likely to occur at the suspension rods for load-bearing on the bridge, and when the suspension rods fall off or break, it is necessary to quickly make an emergency connection at the suspension rod of the bridge.

[0033] Refer to Figures 1-4As shown in the figure, an emergency easy - disassembling and adjustable self - anchoring connection device includes an adjustable connection device 1. The adjustable connection device 1 includes an adjustment component 2 and a housing component 3. The housing component 3 is provided with a cavity, and the adjustment component 2 is located in the cavity. Both ends of the adjustable connection device 1 are respectively connected with an anchor head 7.

[0034] Among them, the two anchor heads 7 are connected through the adjustable connection device 1, forming an integral design to constitute a semi - permanent structure. Compared with the traditional connection device and the anchor head being set independently, the technical solution disclosed in the present invention does not require disassembly and assembly, is convenient to be directly used in the project, can realize rapid installation, and is convenient to save the engineering operation time; when in use, the objects to be connected (such as Figure 1 the pull rod 15 mentioned above) are respectively connected with the two - end anchor heads 7, and the adjustable connection device 1 adjusts the distance between the two - end anchor heads 7 to adapt to different application scenarios; during the emergency use process of the project, the connection device can be quickly assembled in place, improving the construction and maintenance efficiency. The connection device can be used repeatedly to save the project cost.

[0035] Refer to Figure 3 As shown in the figure, further, the adjustment component 2 includes a reel 201, two groups of wire rope assemblies 202, and two connecting arms 203. The two groups of wire rope assemblies 202 are respectively located on both sides of the reel 201; one end of each group of wire rope assemblies 202 is connected to the reel 201, and each group of wire rope assemblies 202 can be wound and unwound on the reel 201; the two connecting arms 203 are respectively fixed on the two groups of wire rope assemblies 202, and the anchor heads 7 are respectively connected to the other ends of the wire rope assemblies 202. Under the rotation of the reel 201, each group of wire rope assemblies 202 can be wound and unwound on the reel 201, so as to adjust the length of the wire rope assemblies 202 to realize the adjustability of the connection device.

[0036] Refer to Figure 2 、 3 As shown in the figure, the reel 201 is rotatably installed in the cavity of the housing component 3, and each connecting arm 203 can approach or move away from the reel 201 in the cavity; two or more first limiting holes 4 are provided on each connecting arm 203, and the first limiting holes 4 are spaced along the direction of moving away from or approaching the reel 201; second limiting holes 5 are respectively provided on both sides of the reel 201 on the housing component 3; the first limiting holes 4 can correspond to the second limiting holes 5;

[0037] It further includes a pin 6. The pin 6 can be inserted into the first limiting hole 4 and the second limiting hole 5 to fix the connecting arm 203 and the housing component 3.

[0038] During use, rotate the reel 201. The reel 201 drives the wire rope assemblies 202 on both sides to achieve winding or unwinding, so as to adjust the length of the wire rope assemblies 202. At this time, the two connecting arms 203 on the two wire rope assemblies 202 move along with the wire rope assemblies 202. Among them, the housing assembly 3 can provide a large steel bundle telescopic range for the wire rope assemblies 202; after the length adjustment is completed, insert the pins 6 into the second limiting holes 5 on both sides of the housing assembly 3 with respect to the reel 201, and insert them into the first limiting holes 4 corresponding to the second limiting holes 5 on the two connecting arms 203 at this time, so as to fix the connecting arms 203 to the housing assembly 3, so as to fix the adjusting assembly 2. At this time, the wire rope assemblies 202 in the adjusting assembly 2 are maintained at the required length.

[0039] It can be understood that in this embodiment, the number of the second limiting holes 5 on both sides of the reel 201 is two or more, and the second limiting holes 5 are spaced apart in a direction away from or close to the reel 201.

[0040] During specific use, the adjustable connecting device 1 can be adjusted in length within a large range to adapt to different application environments, and has a wide range of applications.

[0041] Refer to Figures 1-3 As shown, specifically, in this embodiment, the number of the first limiting holes 4 on each connecting arm 203 is two or more (five in this embodiment), and the first limiting holes 4 are spaced apart in a direction away from or close to the reel 201. The number of the second limiting holes 5 on both sides of the housing assembly 3 with respect to the reel 201 is two or more (three in this embodiment), and the second limiting holes 5 are spaced apart in a direction away from or close to the reel 201. Insert the pins 6 into one of the second limiting holes 5 on the housing assembly 3 closest to the reel 201 and one of the first limiting holes 4 on the connecting arm 203 farthest from the reel 201. At this time, the wire rope assemblies 202 in the adjusting assembly 2 are wound to the shortest, and at this time, the distance between the anchor heads 7 at both ends of the adjustable connecting device 1 is the closest; insert the pins 6 into one of the second limiting holes 5 on the housing assembly 3 farthest from the reel 201 and one of the first limiting holes 4 on the connecting arm 203 closest to the reel 201. At this time, the wire rope assemblies 202 in the adjusting assembly 2 are unwound to the longest, and at this time, the distance between the anchor heads 7 at both ends of the adjustable connecting device 1 is the farthest.

[0042] It can be understood that by rotating the reel 201, the wire rope assembly 202 is wound and unwound on the reel 201, and the pin 6 is inserted into different first limiting holes 4 and second limiting holes 5 to adjust the length of the adjustable connecting device 1. In other embodiments, according to different application scenarios, the number of the first limiting holes 4 on each of the connecting arms 203 and the number of the second limiting holes 5 on the housing assembly 3 can be adjusted.

[0043] Refer to Figure 3 As shown, each of the wire rope assemblies 202 includes a first wire rope 2021 and a second wire rope 2022. One end of the first wire rope 2021 is connected to the reel 201, and the first wire rope 2021 can be wound or unwound on the reel 201. The other end of the first wire rope 2021 is connected to one end of the connecting arm 203. One end of the second wire rope 2022 is connected to the other end of the connecting arm 203, and the other end of the second wire rope 2022 is connected to the anchor head 7.

[0044] During use, the reel 201 is rotated, and the reel 201 drives the first wire rope 2021 to be wound or unwound to adjust the length of the wire rope assembly 202. The second wire rope 2022 is connected between the connecting arm 203 and the anchor head 7 to play a connecting role. By dividing the wire rope assembly 202 into the first wire rope 2021 and the second wire rope 2022, when adjusting the length, it is not necessary to adjust the length of the entire wire rope, thereby improving the structural stability and use efficiency of the adjustable connecting device 1.

[0045] Refer to Figure 4 As shown, the housing assembly 3 includes a first clamping plate 301 and a second clamping plate 302. The first clamping plate 301 and the second clamping plate 302 are arranged oppositely, and the first clamping plate 301 and the second clamping plate 302 are fixedly connected. A cavity is formed between the first clamping plate 301 and the second clamping plate 302.

[0046] Among them, the first clamping plate 301 and the second clamping plate 302 can be connected by detachable connecting parts such as bolts, which is convenient for overhauling the adjusting assembly 2 in the housing assembly 3. By installing the adjusting assembly 2 in the housing assembly 3, the adjusting assembly 2 is strengthened and protected to improve the structural integrity and stability of the adjustable connecting device 1.

[0047] Furthermore, tooth-shaped concave and convex grooves 8 are provided on the opposite sides of the first clamping plate 301 and the second clamping plate 302, and the tooth-shaped concave and convex grooves 8 on the first clamping plate 301 are engaged with the tooth-shaped concave and convex grooves 8 on the second clamping plate 302.

[0048] By providing serrated concave-convex grooves 8 on the first clamping plate 301 and the second clamping plate 302, the tightness of the connection between the first clamping plate 301 and the second clamping plate 302 is improved, thereby enhancing the structural stability of the housing assembly 3.

[0049] Embodiment 2

[0050] Refer to Figures 1-6 As shown, an emergency easy-disassembly and adjustable self-anchoring connection device in this embodiment is similar to that in Embodiment 1. The difference lies in that the structure of the anchor head can be optimized based on Embodiment 1. For the similarities between this embodiment and Embodiment 1, refer to Embodiment 1. The following will describe the further improvements.

[0051] Refer to Figure 5 、 6 As shown, the anchor head 7 includes a first anchor block 701 and a second anchor block 702. The first anchor block 701 and the second anchor block 702 are spliced with each other and fixedly connected by a connecting member 13 to form the anchor head 7. The connecting member 13 fixes the first anchor block 701 and the second anchor block 702 to ensure the structural integrity and stability of the anchor head 7. In this embodiment, the connecting member 13 is a bolt. In other embodiments, the connecting member 13 can also be other connecting and detachable members.

[0052] Among them, a through installation hole 9 is formed at the butt joint of the first anchor block 701 and the second anchor block 702. A first clamping member 10 is provided in the installation hole 9. The first clamping member 10 is used to fix the object to be connected (such as the tie rod 15).

[0053] Furthermore, a through hole 11 is formed through the anchor head 7. A second clamping member 12 is provided in the through hole 11. The other end of the wire rope assembly 202 passes through the through hole 11 and is clamped on the second clamping member 12. Among them, the wire rope assembly 202 is connected to the anchor head 7 through the second clamping member 12, forming an integral body between the wire rope assembly 202 and the anchor head 7, thus constituting a semi-permanent structure without disassembly and assembly, so as to be directly used in the project. During use, rapid installation can be achieved, facilitating the saving of project operation time.

[0054] Refer to Figure 5 、 6 As shown, the number of the through holes 11 is two or more (four in this embodiment). Each of the through holes 11 is evenly distributed with the installation hole 9 as the center. And a second clamping member 12 is provided in each of the through holes 11. The other end of the wire rope assembly 202 is divided into two or more bundles (four bundles in this embodiment) of steel wires. Each bundle of the steel wires passes through each of the through holes 11 and is clamped on each of the second clamping members 12.

[0055] In this embodiment, the through holes 11 are evenly distributed around the mounting hole 9. The multiple bundles of steel wires at the other end of the wire rope assembly 202 respectively pass through the through holes 11 and are connected to the anchor head 7, so that the wire rope assembly 202 is stressed evenly. And during use, the multiple bundles of steel wires at the other end of the wire rope assembly 202 act on the anchor head 7. When each bundle of steel wires bears the tensile force, it will exert a force on the first anchor block 701 and the second anchor block 702, thereby generating a clamping force pointing to the first clamping member 10, thus forming a self-pressurizing system for the first clamping member 10 to strengthen the clamping of the first anchor block 701 and the second anchor block 702 on the first clamping member 10, and ensuring the stability of the clamping of the first anchor block 701 and the second anchor block 702 on the first clamping member 10.

[0056] Referring to Figure 5 As shown, it further includes a hoop 14. The hoop 14 is sleeved on the first anchor block 701 and the second anchor block 702 to reinforce the anchor head 7 and prevent dislocation and sliding between the first anchor block 701 and the second anchor block 702. In this embodiment, two hoops 14 are provided and are respectively sleeved on the upper end and the lower end of the anchor head 7 to improve the overall stability of the anchor head 7.

[0057] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An emergency easy - disassembly and adjustable self - anchoring connection device, characterized in that, it includes: An adjustable connection device (1), the adjustable connection device (1) includes an adjustment component (2) and a housing component (3); the adjustment component (2) includes a reel (201), two groups of wire rope components (202) and two connecting arms (203), and the two groups of wire rope components (202) are respectively located on both sides of the reel (201); one end of each group of wire rope components (202) is connected to the reel (201), and each group of wire rope components (202) can be wound and unwound on the reel (201); the two connecting arms (203) are respectively fixed on the two groups of wire rope components (202); A cavity is provided in the housing component (3), the adjustment component (2) is located in the cavity, and the reel (201) is rotatably installed on the housing component (3); each connecting arm (203) can approach or move away from the reel (201) in the cavity; two or more first limiting holes (4) are provided on each connecting arm (203), and the first limiting holes (4) are spaced along the direction away from or approaching the reel (201); second limiting holes (5) are respectively provided on both sides of the reel (201) on the housing component (3); the first limiting holes (4) can correspond to the second limiting holes (5); It further includes a pin (6), and the pin (6) can be inserted into the first limiting hole (4) and the second limiting hole (5) to fix the connecting arm (203) to the housing component (3); the other end of each wire rope component (202) is respectively connected to an anchor head (7); Each wire rope component (202) includes a first wire rope (2021) and a second wire rope (2022), one end of the first wire rope (2021) is connected to the reel (201), the first wire rope (2021) can be wound or unwound on the reel (201), and the other end of the first wire rope (2021) is connected to one end of the connecting arm (203); one end of the second wire rope (2022) is connected to the other end of the connecting arm (203), and the other end of the second wire rope (2022) is connected to the anchor head (7); An installation hole (9) is penetrated through the anchor head (7), and a first clamping member (10) is provided in the installation hole (9); A through - hole (11) is penetrated through the anchor head (7), a second clamping member (12) is provided in the through - hole (11), and the other end of the wire rope component (202) passes through the through - hole (11) and is clamped on the second clamping member (12); The anchor head (7) includes a first anchor block (701) and a second anchor block (702), the first anchor block (701) and the second anchor block (702) are spliced with each other and are fixedly connected to each other through a connecting member (13) to form the anchor head (7).

2. The emergency easy - disassembly and adjustable self - anchoring connection device according to claim 1, characterized in that, The housing assembly (3) includes a first clamping plate (301) and a second clamping plate (302). The first clamping plate (301) is disposed opposite to the second clamping plate (302), and the first clamping plate (301) is fixedly connected to the second clamping plate (302). A cavity is formed between the first clamping plate (301) and the second clamping plate (302).

3. The emergency easy-disassembly adjustable self-anchoring connection device according to claim 2, wherein, tooth-shaped concave and convex grooves (8) are provided on one side of the first clamping plate (301) opposite to the second clamping plate (302), and the tooth-shaped concave and convex grooves (8) on the first clamping plate (301) are engaged with the tooth-shaped concave and convex grooves (8) on the second clamping plate (302).

4. The emergency easy-disassembly adjustable self-anchoring connection device according to claim 1, wherein, the number of the second limiting holes (5) on both sides of the reel (201) is two or more; each of the second limiting holes (5) is spaced apart in a direction away from or close to the reel (201).

5. The emergency easy-disassembly adjustable self-anchoring connection device according to claim 1, wherein, the number of the through holes (11) is two or more. Each of the through holes (11) is evenly distributed with the mounting hole (9) as the center, and a second clamping member (12) is provided in each of the through holes (11). The other end of the wire rope assembly (202) is divided into two or more bundles of wires, and each bundle of wires respectively passes through each of the through holes (11) and is clamped on each of the second clamping members (12).

6. The emergency easy-disassembly adjustable self-anchoring connection device according to claim 1, wherein, it further includes a hoop (14). The hoop (14) is sleeved on the first anchor block (701) and the second anchor block (702) to reinforce the anchor head (7).

Images