Connecting and sealing device for main cable and wall body at front end of anchor chamber

Abstract

The utility model relates to the field of bridge construction, in particular to a connecting and sealing device for a main cable and a wall body at the front end of an anchor chamber, which comprises an anchor chamber conduit which is arranged on the front wall of the anchor chamber and corresponds to the inclination of the main cable, and the main cable enters the anchor chamber along a conduit cavity of the anchor chamber conduit; a main cable lock clamp used for clamping the main cable is installed on the main cable, the main cable lock clamp and the anchor chamber guide pipe are coaxially sleeved with the transition pipe, the main cable lock clamp and the transition pipe are connected through a fixed sealing piece, and the transition pipe and the anchor chamber guide pipe are in sliding fit through a sliding sealing piece. According to the utility model, the sealing durability between the main cable and the front wall of the anchor chamber is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to a connection sealing device for a main cable and a front end wall of an anchor chamber. Background Art

[0002] The ground-anchored suspension bridge is a large-span suspension bridge structure suitable for construction in mountainous areas. The anchoring method of the main cable is described in the patent number "CN216474503U". The anchoring section of the main cable is anchored in the anchor chamber after passing through the front wall of the anchor chamber. After the main cable enters the anchor chamber, putty or sealing filler is usually used to cast a lining on the contact surface between the main cable and the front wall of the anchor chamber to achieve sealing between the main cable and the front wall of the anchor chamber and improve the durability of the main cable.

[0003] However, during the use of the main cable, affected by temperature, the main cable is prone to thermal expansion and contraction along the axial direction, resulting in sliding displacement between the main cable and the front wall of the anchor chamber, causing sealing failure, and then causing rainwater to enter the anchor chamber from the gap between the main cable and the anchor chamber, causing rust in the anchor chamber and on the contact surface between the anchor chamber and the main cable. The durability of the sealing device is poor, so it needs to be solved urgently. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a connection sealing device between the main cable and the front wall of the anchor chamber. The utility model greatly improves the durability of the seal between the main cable and the front wall of the anchor chamber.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A connection sealing device between a main cable and a front end wall of an anchor chamber comprises an anchor chamber conduit installed on the front wall of the anchor chamber and corresponding to the inclination of the main cable, the main cable enters the anchor chamber along the tube cavity of the anchor chamber conduit; a main cable locking clamp for clamping the main cable is installed on the main cable, a transition pipe is coaxially sleeved outside the main cable locking clamp and the anchor chamber conduit, the main cable locking clamp and the transition pipe are connected by a fixed sealing member, and the transition pipe and the anchor chamber conduit are slidably matched by a sliding sealing member.

[0007] As a further solution of the utility model: the fixed sealing member includes an annular transition tube front limit plate, which is arranged on the inner circle of the transition tube adjacent to one end of the main cable lock clamp, and the outer circle of the main cable lock clamp adjacent to one end of the transition tube is arranged with an annular lock clamp limit plate, and a lock clamp elastomer is clamped and fixed between the lock clamp limit plate and the transition tube front limit plate; the opening of the main cable lock clamp away from one end of the anchor chamber conduit is sealed by a lock clamp sealing layer.

[0008] As a further solution of the utility model: the sliding seal includes an annular transition tube rear limit plate, which is arranged on the inner circle of one end of the transition tube adjacent to the anchor chamber conduit, and the outer circle of one end of the anchor chamber conduit adjacent to the transition tube is provided with an annular conduit limit plate, and a conduit elastomer is arranged between the conduit limit plate and the transition tube rear limit plate, the conduit elastomer is fixed to the transition tube rear limit plate by bolts, and the transition tube is axially slidably matched with the anchor chamber conduit through the conduit elastomer; after the conduit elastomer and the locking clamp elastomer are matched, both ends of the transition tube are sealed.

[0009] As a further solution of the utility model: the matching section between the transition pipe and the main cable lock clamp is a tapered section of the pipe body whose diameter gradually increases in the direction away from the main cable lock clamp, and the matching section between the transition pipe and the anchor chamber guide tube is a section of the pipe body with equal diameter, and the diameter of the section of the pipe body with equal diameter is equal to the maximum diameter of the tapered section of the pipe body.

[0010] As a further solution of the utility model: the main cable locking clamp and the transition pipe are arranged in half along the axial direction, the main cable locking clamp is fastened by the locking clamp connecting bolts after being closed, and the transition pipe is fastened by the transition pipe connecting bolts after being closed.

[0011] As a further solution of the utility model: a pre-embedded steel plate is pre-embedded on the wall surface of the front wall of the anchor chamber, the pre-embedded steel plate is connected and fixed to the anchoring steel bars in the front wall of the anchor chamber, and the anchor chamber conduit is welded and fixed on the pre-embedded steel plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model installs an inclined anchor chamber conduit on the front wall of the anchor chamber, so that the main cable can enter the anchor chamber for anchoring after passing through the anchor chamber conduit, and a transition pipe is arranged outside the main cable locking clamp and the anchor chamber conduit. Since the transition pipe and the main cable locking clamp are fixedly sealed, and the transition pipe and the anchor chamber conduit are slidably sealed, when the main cable is affected by thermal expansion and contraction and produces axial expansion and contraction, the main cable slides with the anchor chamber conduit through the transition pipe to offset the influence of expansion and contraction. Since the lumen of the transition pipe is a sealed lumen and the transition pipe sleeve is arranged outside the anchor chamber conduit, during the sliding process, the transition pipe not only plays a role in sliding guide, but also plays a role in isolating external rainwater, so as to prevent rainwater and other external substances from entering the anchor chamber along the pipe opening of the anchor chamber conduit, thereby greatly improving the durability of the seal between the main cable and the front wall of the anchor chamber.

[0014] 2. The fixed seal and the sliding seal of the utility model respectively avoid the rigid collision between the transition tube and the anchor chamber conduit and the main cable lock clamp through the locking clamp elastomer and the conduit elastomer, and play an elastic buffering effect. Through the sliding cooperation between the transition tube and the anchor chamber conduit, the relative displacement between the main cable and the anchor chamber is realized to meet the requirements of the axial deformation of the main cable.

[0015] 3. The tapered and equal-diameter sections at the front and rear ends of the transition pipe of the utility model can correspond to the sizes of the anchor chamber duct and main cables of different sizes respectively, and have wide adaptability; the split design of the main cable lock clamp and the transition pipe is easy to disassemble and install.

[0016] 4. The anchor chamber conduit of the utility model is pre-anchored with the front wall of the anchor chamber through the pre-embedded steel plate, and has strong stability after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic structural diagram of the matching surface of the transition tube and the main cable lock clamp in the utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the matching surface of the transition pipe and the anchor chamber conduit in the utility model.

[0020] In the figure:

[0021] 1. Main cable; 2. Front wall of anchor chamber; 21. Embedded steel plate; 22. Anchor steel bar;

[0022] 3. Anchor chamber catheter; 31. Catheter limiting plate; 32. Catheter elastic body;

[0023] 4. Main cable lock clamp; 41. Lock clamp connecting bolt; 42. Lock clamp limit plate;

[0024] 43. Locking clip elastic body; 44. Locking clip sealing layer;

[0025] 5. Transition pipe; 51. Transition pipe connecting bolt;

[0026] 52. Transition pipe front limit plate; 53. Transition pipe rear limit plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figures 1 to 3In an embodiment of the utility model, a connection sealing device between a main cable and a front wall of an anchor chamber comprises an embedded steel plate 21 fixed on the front wall 2 of the anchor chamber, and the embedded steel plate 21 is fixed to the front wall 2 of the anchor chamber by anchoring steel bars 22. An anchor chamber conduit 3 is arranged obliquely on the plate surface of the embedded steel plate 21, and the inclination of the anchor chamber conduit 3 corresponds to the inclination of the main cable 1. After the main cable 1 passes through the anchor chamber conduit 3 axially along the anchor chamber conduit 3, it enters the anchor chamber and is fixed. The anchor chamber conduit 3 can be fixedly connected to the embedded steel plate 21 by welding or bolting.

[0029] A main cable lock clamp 4 is coaxially fixed on the main cable 1 , and a transition pipe 5 is coaxially arranged outside the main cable lock clamp 4 . The length of the transition pipe 5 is greater than the distance between the main cable lock clamp 4 and the anchor chamber conduit 3 .

[0030] One end of the transition pipe 5 adjacent to the main cable clamp 4 is a tapered pipe whose diameter gradually increases in the direction away from the main cable clamp 4, and one end of the transition pipe 5 adjacent to the anchor chamber conduit 3 is a cylindrical pipe, and the diameter of the cylindrical pipe is equal to the maximum diameter of the tapered pipe. The tapered pipe section of the transition pipe 5 is sleeved on the outer ring of the main cable clamp 4 so as to be coaxially arranged with the main cable clamp 4, and the cylindrical pipe section of the transition pipe 5 is sleeved on the outer ring of the anchor chamber conduit 3 so as to be coaxially arranged with the anchor chamber conduit 3.

[0031] The main cable lock clamp 4 and the transition pipe 5 are both split pipes, preferably designed to be split in half along the axial direction, and to form a complete pipe body after closing. After the two split structures of the main cable lock clamp 4 are closed, they are fastened by the lock clamp connecting bolts 41. After the two split structures of the transition pipe 5 are closed, they are fastened by the transition pipe connecting bolts 51.

[0032] A transition tube front limit plate 52 is coaxially arranged on the inner circle of the tapered tube section of the transition tube 5, and a lock clamp limit plate 42 is arranged on the outer circle of the main cable lock clamp 4 at one end inside the transition tube 5. The lock clamp limit plate 42 and the transition tube front limit plate 52 are both annular plates. There is a certain distance between the outer edge of the lock clamp limit plate 42 and the inner wall of the transition tube 5, and there is a certain distance between the transition tube front limit plate 52 and the outer wall of the main cable lock clamp 4.

[0033] An annular locking clamp elastic body 43 is installed between the locking clamp limit plate 42 and the transition pipe front limit plate 52, and the two ends of the locking clamp elastic body 43 are respectively in contact with the locking clamp limit plate 42 and the plate surface of the transition pipe front limit plate 52. The space between the pipe opening of the transition pipe 5 and the transition pipe front limit plate 52 is filled with a locking clamp sealing layer 44. The locking clamp sealing layer 44 is preferably a sealing putty, which is used to fill the gap to maximize the sealing effect.

[0034] The transition pipe 5 has a rear stopper plate 53 coaxially arranged on the inner circle of the cylindrical pipe section, and the anchor chamber conduit 3 has a conduit stopper plate 31 arranged on the outer circle at one end of the transition pipe 5 lumen. Both the conduit stopper plate 31 and the rear stopper plate 53 are annular plates, and a conduit elastic body 32 is arranged between the conduit stopper plate 31 and the rear stopper plate 53. The conduit elastic body 32 is fixed to the rear stopper plate 53 of the transition pipe by bolts. When the main cable 1 generates a telescopic movement in the axial direction, the transition pipe 5 slides with the anchor chamber conduit 3 through the conduit elastic body 32. When the conduit stopper plate 31 and the rear stopper plate 53 of the transition pipe approach each other, the conduit elastic body 32 is compressed to generate an elastic force in the axial direction of the main cable 1. Through the cooperation of the conduit elastic body 32 and the locking clamp elastic body 43, the two ends of the transition pipe 5 can be closed, so that the lumen of the transition pipe 5 is in a sealed state to prevent rainwater and the like from entering.

[0035] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0036] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

Claims

1. A connection sealing device between a main cable and a front end wall of an anchor chamber, characterized in that: The invention comprises an anchor chamber conduit (3) installed on the front wall (2) of the anchor chamber and corresponding to the inclination of the main cable (1); the main cable (1) enters the anchor chamber along the tube cavity of the anchor chamber conduit (3); a main cable lock clamp (4) for clamping the main cable (1) is installed on the main cable (1); a transition pipe (5) is coaxially sleeved outside the main cable lock clamp (4) and the anchor chamber conduit (3); the main cable lock clamp (4) and the transition pipe (5) are connected by a fixed seal; and the transition pipe (5) and the anchor chamber conduit (3) are slidably matched by a sliding seal.

2. A connection sealing device for a main cable and a front end wall of an anchor chamber according to claim 1, characterized in that: The fixed seal comprises an annular transition pipe front limit plate (52), which is arranged on the inner circle of one end of the transition pipe (5) adjacent to the main cable lock clamp (4), and an annular lock clamp limit plate (42) is arranged on the outer circle of one end of the main cable lock clamp (4) adjacent to the transition pipe (5), and a lock clamp elastic body (43) is clamped and fixed between the lock clamp limit plate (42) and the transition pipe front limit plate (52); the opening of the main cable lock clamp (4) at one end away from the anchor chamber guide tube (3) is sealed by a lock clamp sealing layer (44).

3. A connection sealing device for a main cable and a front end wall of an anchor chamber according to claim 1, characterized in that: The sliding seal comprises an annular transition pipe rear limit plate (53), which is arranged on the inner ring of one end of the transition pipe (5) adjacent to the anchor chamber guide tube (3), and an annular guide tube limit plate (31) is arranged on the outer ring of one end of the anchor chamber guide tube (3) adjacent to the transition pipe (5), and a guide tube elastic body (32) is arranged between the guide tube limit plate (31) and the transition pipe rear limit plate (53), and the guide tube elastic body (32) and the transition pipe rear limit plate (53) are fixed by bolts, and the transition pipe (5) and the anchor chamber guide tube (3) are axially slidably matched through the guide tube elastic body (32); and the guide tube elastic body (32) and the locking clamp elastic body (43) are matched to seal the two ends of the transition pipe (5).

4. A connection sealing device for a main cable and a front end wall of an anchor chamber according to any one of claims 1 to 3, characterized in that: The matching section between the transition pipe (5) and the main cable lock clamp (4) is a tapered section pipe body whose diameter gradually increases in a direction away from the main cable lock clamp (4); the matching section between the transition pipe (5) and the anchor chamber guide tube (3) is a section pipe body of equal diameter, and the diameter of the section pipe body of equal diameter is equal to the maximum diameter of the tapered section pipe body.

5. A connection sealing device for a main cable and a front end wall of an anchor chamber according to any one of claims 1 to 3, characterized in that: The main cable lock clamp (4) and the transition pipe (5) are both arranged in half along the axial direction; the main cable lock clamp (4) is fastened by the lock clamp connecting bolt (41) after being closed, and the transition pipe (5) is fastened by the transition pipe connecting bolt (51) after being closed.

6. A connection sealing device for a main cable and a front end wall of an anchor chamber according to any one of claims 1 to 3, characterized in that: An embedded steel plate (21) is embedded in the wall surface of the anchor chamber front wall (2); the embedded steel plate (21) is connected and fixed to the anchoring steel bar (22) in the anchor chamber front wall (2); and the anchor chamber conduit (3) is welded and fixed to the embedded steel plate (21).

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