Dehumidification auxiliary device for lower anchor head of cable-stayed bridge

Abstract

The utility model provides a cable-stayed bridge lower anchor head dehumidification auxiliary device which comprises an anchor pulling plate, an anchor pipe arranged in the anchor pulling plate, an anchor cup arranged in the anchor pipe, an anchor ring fixedly connected to the outer portion of the anchor cup in a sleeved mode and abutting against the anchor pipe, a connecting cylinder installed at the top end of the anchor cup and a wire separating plate arranged at the lower end in the anchor cup. The cable-stayed bridge lower anchor head dehumidification auxiliary device comprises a connecting cylinder, a waterproof assembly arranged on the connecting cylinder, a wire dividing plate arranged on the connecting cylinder, a plurality of high-strength steel wires arranged on the wire dividing plate, a steel wire bundle bundled into a whole by the high-strength steel wires and arranged in the connecting cylinder, and an HDPE sheath arranged outside the steel wire bundle in a sleeving mode. According to the inhaul cable, the corrosion influence of external rainwater and wet water vapor on the lower anchor head can be greatly reduced, moisture in the lower anchor head can be discharged in a matched mode under the cooperation of the dehumidification assembly, the corrosion speed of the inhaul cable body is greatly reduced, the dehumidification assembly cannot be influenced when the state of the lower anchor head is overhauled, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, specifically, relate to a cable -stayed bridge under anchor head dehumidification auxiliary device. BACKGROUND

[0002] Cable -stayed bridge under anchor head is the important force composition part of bridge, and anchor head is influenced by rain, sea breeze and other environmental factors for a long time, is easy to corrosion, influences its service life, so it is common to adopt sealing, dehumidification and other anticorrosive measures, delays the speed of anchor head to be eroded, and the current common dehumidification method is to set up ventilation device inside anchor head, adopts ventilation pipeline to discharge the moisture in anchor head interior, to keep the air circulation in anchor head interior, reduces the accumulation of moisture, and the cable of cable -stayed bridge is fixed, generally adopts cable sleeve to be sleeved outside the cable in the cable and bridge, and the inside of cable sleeve is filled with variable diameter rubber and inflatable air bag, then a layer of anticorrosive sealant is laid on the variable diameter rubber and inflatable air bag, to seal and protect the outlet of cable conduit.

[0003] But the cable is often accompanied by slight shaking when using, which can easily cause the anticorrosive sealant to break, resulting in poor sealing, and rainwater can easily penetrate, thereby affecting its use, and in order to ensure the corrosion protection effect of the anchor head, a protective structure is also installed at the bottom of the anchor device, and a dehumidification assembly is provided to protect the cable anchor device from external environmental erosion and to timely discharge the moisture in the anchor device. However, the anchor device needs regular maintenance, and the gas delivery pipe in the existing dehumidification assembly generally passes through the protective structure to communicate with the anchor device. When the protective structure is removed for maintenance, the dehumidification assembly is easily affected, and after the maintenance is completed, the dehumidification assembly needs to be debugged and restored, which is not convenient to use. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a cable -stayed bridge under anchor head dehumidification auxiliary device to solve the above problems.

[0005] In order to achieve the above purpose, the utility model embodiment provides a cable -stayed bridge under anchor head dehumidification auxiliary device, which comprises: an anchor pull plate, an anchor pipe arranged in the anchor pull plate, an anchor cup arranged in the anchor pipe, an anchor ring fixedly sleeved outside the anchor cup and abutting against the anchor pipe, a connecting barrel mounted at the top end of the anchor cup, a filament separating plate arranged at the lower end in the anchor cup, a plurality of high-strength steel wires arranged on the filament separating plate, a steel wire bundle bundled by the plurality of high-strength steel wires and placed in the connecting barrel, an HDPE sheath sleeved outside the steel wire bundle, a shock absorbing plug arranged between the HDPE sheath and the anchor pipe, a waterproof assembly mounted on the top end of the anchor pipe and the HDPE sheath, a protective assembly arranged on the anchor pull plate and the anchor cup, and a dehumidification assembly arranged on the anchor cup and the protective assembly, wherein

[0006] The waterproof assembly is adapted to be stably assembled at the top end of the anchor pipe and to seal between the top end of the anchor pipe and the HDPE sheath;

[0007] The protection assembly is adapted to seal the lower end of the anchor cup.

[0008] The dehumidification assembly is adapted to deliver dry air produced by an external dry air production device into the anchor cup.

[0009] Further, the protection assembly comprises a protection cover sleeved on the lower end of the anchor cup and detachably fixedly connected with the anchor pull plate through a plurality of bolts, a sealing ring fixed on the top of the protection cover and abutting against the anchor pull plate, and a protection plate installed on the lower end of the anchor cup through a plurality of bolts.

[0010] Further, the dehumidification assembly comprises a plurality of inner air delivery pipes arranged in an annular array in the anchor cup and having one end penetrating through the center part of the filament distribution plate, an inner air exhaust pipe arranged in the anchor cup and having one end penetrating through the center part of the filament distribution plate, an annular distribution pipe fixed in the protection cover, a plurality of outer air delivery pipes arranged in the protection cover and connected with the annular distribution pipe, an outer air exhaust pipe installed in the middle part of the protection cover, an air inlet pipe installed on the protection cover and having one end connected with the annular distribution pipe, and a communication member installed on the protection plate.

[0011] The air inlet pipe and the outer air exhaust pipe are connected with an external dry air production device.

[0012] Further, the communication member comprises a plurality of communication pipes installed on the protection plate and corresponding to the inner air exhaust pipe and the plurality of inner air delivery pipes, a plurality of butt joints respectively formed at two ends of the plurality of communication pipes, and a plurality of rubber abutting rings respectively arranged in the plurality of butt joints.

[0013] The outer air exhaust pipe, the inner air exhaust pipe, the plurality of outer air delivery pipes, and the plurality of inner air delivery pipes are respectively slidably inserted into the plurality of butt joints.

[0014] Further, the waterproof assembly comprises a first waterproof half cover and a second waterproof half cover sleeved outside the HDPE sheath and the anchor pipe, two butt joints fixed symmetrically on the first waterproof half cover, two butt blocks fixed symmetrically on the second waterproof half cover and arranged in the two butt joints respectively, two sealing pads fixed on the two butt blocks respectively and abutting against the two butt joints respectively, a drainage ring fixed on the HDPE sheath, an assembly groove arranged in the drainage ring, a first rubber ring fixed on the drainage ring and the assembly groove, a second rubber ring fixed on the outside of the anchor pipe, two reinforcing members arranged on the two butt joints and the butt blocks respectively, and an assembly member arranged in the top end of the anchor pipe and the first waterproof half cover, the second waterproof half cover and the drainage ring.

[0015] The first rubber ring abuts against the outer wall of the top end of the first waterproof half cover and the second waterproof half cover, and the second rubber ring abuts against the inner wall of the bottom end of the first waterproof half cover and the second waterproof half cover.

[0016] Further, the assembly member comprises a wedge-shaped abutting ring fixed in the assembly groove, a wedge-shaped abutting groove arranged in the top end of the anchor pipe, two control half rings fixed in the first waterproof half cover and the second waterproof half cover respectively, two abutting half rings arranged at the bottom ends of the two control half rings and abutting against the top end of the anchor pipe, a plurality of guide rods fixed on the upper surfaces of the two abutting half rings and penetrating through the two control half rings respectively, a plurality of limiting discs fixed at the top portions of the guide rods respectively, a plurality of reset springs movably sleeved outside the guide rods and fixedly connected with one of the control half rings and one of the limiting discs at two ends respectively, and two wedge-shaped half rings fixed on the lower surfaces of the two abutting half rings.

[0017] The two wedge-shaped half rings abut against the wedge-shaped abutting groove.

[0018] Further, the reinforcing member comprises two adaptive recesses arranged in one of the butt joints and one of the butt blocks, a reinforcing sleeve sleeved outside one of the butt joints and one of the butt blocks, and two adaptive convex blocks fixed symmetrically in the reinforcing sleeve and slidably arranged in the two adaptive recesses respectively.

[0019] Compared with the prior art, the embodiments of the utility model have the following beneficial effects:

[0020] 1. The cable-stayed bridge lower anchor head dehumidification auxiliary device is provided with a waterproof assembly, a protection assembly and a dehumidification assembly, which can effectively seal and protect the upper and lower ends of the lower anchor head after the lower anchor head is assembled, avoid the erosion of external rainwater vapor to the lower anchor head, and can intermittently input dry hot air into the lower anchor head to remove the moisture in the lower anchor head, thereby effectively avoiding the corrosion of high-strength steel wires in the lower anchor head and prolonging the service life of the cable-stayed bridge cable.

[0021] 2. The shielding structure in the waterproof assembly in the cable-stayed bridge lower anchor head dehumidification auxiliary device is composed of a first waterproof half cover and a second waterproof half cover, and cooperates with a drainage ring. When the cable-stayed bridge cable slightly shakes during use, the first waterproof half cover and the second waterproof half cover will shake, avoiding the problem of sealing failure of the first waterproof half cover and the second waterproof half cover in shaking and vibration. In addition, the butt joint of the first waterproof half cover and the second waterproof half cover does not need to use bolts, avoiding the corrosion or loosening of the bolts in the long-term shaking of the cable, causing the loosening of the butt joint of the first waterproof half cover and the second waterproof half cover, and thereby ensuring the waterproof effect of the waterproof assembly during long-term use.

[0022] 3. The dehumidification assembly in the cable-stayed bridge lower anchor head dehumidification auxiliary device is of a separated structure, and the part in the protection assembly and the part in the anchor cup are connected and assembled by a communication piece. When the protection assembly needs to be removed for regular maintenance of the lower anchor head, the dehumidification assembly will also be removed synchronously. After the maintenance is completed and the assembly of the protection assembly is completed, the dehumidification assembly will also be assembled synchronously, facilitating the maintenance operation of the user and effectively avoiding the influence on the structure of the dehumidification assembly during maintenance, ensuring the normal work of the dehumidification assembly after maintenance and convenient use. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further explained in connection with the drawings and embodiments.

[0024] Figure 1 A perspective view of the utility model is shown.

[0025] Figure 2 A partial split perspective view of the utility model is shown. Figure One ;

[0026] Figure 3 A partial split perspective view of the utility model is shown. Figure Two ;

[0027] Figure 4 A partial split perspective view of the utility model is shown.

[0028] Figure 5 A partial split perspective view of the utility model is shown. Figure One ;

[0029] Figure 6 A sectional view of the utility model is shown.

[0030] Figure 7 A partial sectional view of the utility model is shown. Figure Two ;

[0031] Figure 8 A partial sectional view of the utility model is shown.

[0032] In the drawings

[0033] 1, anchor plate; 2, anchor pipe; 3, anchor cup; 4, anchor ring; 5, connecting cylinder; 6, split plate; 7, high-strength steel wire; 8, steel wire bundle; 9, HDPE sheath; 10, shock-absorbing plug; 11, waterproof assembly; 12, protection assembly; 13, dehumidification assembly; 14, protective cover; 15, sealing ring; 16, protection plate; 17, inner gas conveying pipe; 18, inner exhaust pipe; 19, annular shunt pipe; 20, outer gas conveying pipe; 21, outer exhaust pipe; 22, gas inlet pipe; 23, communication piece; 24, communication pipe; 25, butt joint groove; 26, rubber abutment ring; 27, first waterproof half cover; 28, second waterproof half cover; 29, butt joint sleeve; 30, butt joint block; 31, sealing gasket; 32, drainage ring; 33, assembly groove; 34, first rubber ring; 35, second rubber ring; 36, reinforcing member; 37, assembly piece; 38, wedge-shaped abutment ring; 39, wedge-shaped abutment groove; 40, control half ring; 41, abutment half ring; 42, guide rod; 43, limiting disc; 44, return spring; 45, wedge-shaped half ring; 46, adaptive groove; 47, reinforcing sleeve; 48, adaptive protrusion. DETAILED DESCRIPTION

[0034] The utility model will be explained in further detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the components related to the utility model.

[0035] As Figures 1-8The utility model discloses a kind of auxiliary devices for dehumidification of anchorage head under cable-stayed bridge, including: anchor pull plate 1, anchor pipe 2 being arranged in the anchor pull plate 1, anchor cup 3 being arranged in the anchor pipe 2, anchor ring 4 being fixedly sleeved outside the anchor cup 3 and with the anchor pipe 2, connecting cylinder 5 being installed in the top end of the anchor cup 3, the lower end of the anchor cup 3 is arranged in the filament plate 6, several high-strength steel wires 7 are arranged on the filament plate 6, steel wire bundle 8 is bundled by several high-strength steel wires 7 and is placed in the connecting cylinder 5, HDPE sheath 9 is sleeved outside the steel wire bundle 8, shock-absorbing plug 10 is arranged between the HDPE sheath 9 and the anchor pipe 2, waterproof assembly 11 is installed on the top end of the anchor pipe 2 and the HDPE sheath 9, protection assembly 12 is arranged on the anchor pull plate 1 and the anchor cup 3, and dehumidification assembly 13 is arranged on the anchor cup 3 and the protection assembly 12, wherein

[0036] The waterproof assembly 11 is suitable for being stably assembled on the top end of the anchor pipe 2, and the top end of the anchor pipe 2 and the HDPE sheath 9 are closed;

[0037] The protection assembly 12 is suitable for closing and protecting the lower end of the anchor cup 3;

[0038] The dehumidification assembly 13 is suitable for conveying dry air produced by an external dry air production device into the anchor cup 3. When the cable anchor head is installed, the waterproof assembly 11 and the protection assembly 12 can be assembled synchronously, and the upper and lower ends of the cable anchor head are closed and protected, so as to effectively reduce the erosion of external rainwater and water vapor on the cable anchor head, thereby prolonging the service life of the cable anchor head. The first waterproof half cover 27 and the second waterproof half cover 28 of the waterproof assembly 11 are sleeved outside the anchor pipe 2 and the HDPE sheath 9 through the assembly part 37 and the reinforcing part 36. When the cable is slightly shaken during use, the first waterproof half cover 27 and the second waterproof half cover 28 will shake, so as to avoid the sealing failure of the first waterproof half cover 27 and the second waterproof half cover 28 in the shaking and vibration. The first waterproof half cover 27 and the second waterproof half cover 28 do not need to use bolts, so as to avoid the corrosion or loosening of the bolts in the long-term shaking of the cable, which causes the loosening of the connection of the first waterproof half cover 27 and the second waterproof half cover 28, thereby ensuring the waterproof effect of the waterproof assembly 11 during long-term use. The waterproof assembly 11 has a separate structure, which is easy to manufacture and install. During the use of the cable anchor head, the dehumidification assembly 13 can input dry hot air into the anchor cup 3 to remove the moisture in the anchor cup 3, so as to ensure the dry environment in the anchor cup 3 and further improve the corrosion resistance of the cable anchor head. The dehumidification assembly 13 has a separate structure, and the part in the protection assembly 12 and the part in the anchor cup 3 are connected and assembled by the communication part 23. When the protection assembly 12 needs to be removed for regular maintenance of the cable anchor head, the dehumidification assembly 13 will also be removed synchronously. After the maintenance is completed and the protection assembly 12 is assembled, the dehumidification assembly 13 will also be assembled synchronously, thereby effectively avoiding the influence of the structure of the dehumidification assembly 13 during maintenance, ensuring the normal work of the dehumidification assembly 13 after maintenance, and facilitating use.

[0039] Optionally, the protection assembly 12 comprises a protection cover 14 sleeved on the lower end of the anchor cup 3 and detachably fixedly connected with the anchor plate 1 through a plurality of bolts, a sealing ring 15 fixed on the top of the protection cover 14 and abutting against the anchor plate 1, and a protection plate 16 installed on the lower end of the anchor cup 3 through a plurality of bolts. The protection plate 16 can preliminarily close and protect the anchor cup 3, and the lower end of the anchor cup 3 can be further closed and protected under the control of the protection cover 14 in cooperation with the sealing ring 15, so as to prevent the external humid air from entering the anchor cup 3, thereby ensuring the protection effect of the plurality of high-strength steel wires in the anchor cup 3.

[0040] Optionally, the dehumidification assembly 13 comprises a plurality of inner air conveying pipes 17 arranged in the anchor cup 3 and penetrating the filament distribution plate 6, an inner air discharging pipe 18 arranged in the anchor cup 3 and penetrating the center of the filament distribution plate 6, a ring-shaped air distribution pipe 19 fixed in the protective cover 14, a plurality of outer air conveying pipes 20 arranged in the protective cover 14 and connected with the ring-shaped air distribution pipe 19, an outer air discharging pipe 21 installed in the middle of the protective cover 14, an air inlet pipe 22 installed on the protective cover 14 and connected with one end of the ring-shaped air distribution pipe 19, and a communication member 23 installed on the protective plate 16;

[0041] The air inlet pipe 22 and the outer air discharging pipe 21 are connected with an external dry air preparation device. In use, dry hot air generated by the external dry air preparation device can be conveyed into the ring-shaped air distribution pipe 19 through the air inlet pipe 22, and then into the plurality of outer air conveying pipes 20. With the cooperation of the communication member 23, the dry hot air in the plurality of outer air conveying pipes 20 can be conveyed into the anchor cup 3 through the plurality of inner air conveying pipes 17. The plurality of inner air conveying pipes 17 have different lengths, so that the dry hot air can be discharged from different positions in the anchor cup 3 through the plurality of inner air conveying pipes 17, and then discharged through the inner air discharging pipe 18, the communication member 23 and the outer air discharging pipe 21, thereby removing the moisture in the anchor cup 3 and ensuring a dry environment in the anchor cup 3, which has a good corrosion resistance effect on the plurality of high-strength steel wires 7.

[0042] Optionally, the communication member 23 comprises a plurality of communication pipes 24 installed on the protective plate 16 and corresponding to the inner air discharging pipe 18 and the plurality of inner air conveying pipes 17, a plurality of butt joints 25 respectively formed at both ends of the plurality of communication pipes 24, and a plurality of rubber stop rings 26 respectively arranged in the plurality of butt joints 25;

[0043] The outer exhaust pipe 21, the inner exhaust pipe 18, the outer gas delivery pipe 20 and the inner gas delivery pipe 17 are respectively inserted into the butt joint groove 25 on one side of the protection plate 16. When the protection plate 16 is installed, the inner exhaust pipe 18 and the inner gas delivery pipe 17 are respectively inserted into the butt joint groove 25. When the protection cover 14 is installed, the outer exhaust pipe 21 and the outer gas delivery pipe 20 are respectively inserted into the butt joint groove 25 on the other side of the protection plate 16. Then, under the cooperation of the communication pipe 24, the inner exhaust pipe 18 and the outer exhaust pipe 21, and the inner gas delivery pipe 17 and the outer gas delivery pipe 20 are communicated with each other. Under the cooperation of the rubber ring 26, the stability of the communication between the inner exhaust pipe 18 and the outer exhaust pipe 21, and the inner gas delivery pipe 17 and the outer gas delivery pipe 20 is ensured. The dry hot air can be stably delivered into the anchor cup 3. When the protection cover 14 and the protection plate 16 are removed for maintenance of the anchor, the outer exhaust pipe 21 and the outer gas delivery pipe 20 do not affect the removal of the protection cover 14 and the protection plate 16. After the protection cover 14 and the protection plate 16 are installed, the dry hot air can be directly delivered, which avoids affecting the dehumidification assembly 13 during maintenance and does not need to be adjusted after maintenance.

[0044] Optionally, the waterproof assembly 11 comprises a first waterproof half cover 27 and a second waterproof half cover 28 sleeved outside the HDPE sheath 9 and the anchor pipe 2, two butt joint sleeves 29 fixed symmetrically on the first waterproof half cover 27, two butt joint blocks 30 fixed symmetrically on the second waterproof half cover 28 and respectively arranged in the two butt joint sleeves 29, two sealing pads 31 respectively fixed on the two butt joint blocks 30 and respectively abutting against the two butt joint sleeves 29, a drainage ring 32 fixedly sleeved on the HDPE sheath 9, an assembly groove 33 formed in the drainage ring 32, a first rubber ring 34 fixed on the drainage ring 32 and the assembly groove 33, a second rubber ring 35 fixedly sleeved outside the anchor pipe 2, two reinforcing members 36 respectively arranged on the two butt joint sleeves 29 and the butt joint blocks 30, and an assembly member 37 arranged in the top end of the anchor pipe 2 and the first waterproof half cover 27, the second waterproof half cover 28 and the drainage ring 32;

[0045] The first rubber ring 34 is in abutment with the upper end outer wall of the first waterproof half cover 27 and the second waterproof half cover 28, and the second rubber ring 35 is in abutment with the lower end inner wall of the first waterproof half cover 27 and the second waterproof half cover 28. In use, the first waterproof half cover 27 and the second waterproof half cover 28 are cooperatively arranged outside the HDPE sheath 9 and the anchor pipe 2, and the upper end of the anchor pipe 2 is closed, and under the control of the drainage ring 32, the first rubber ring 34 cooperates with the drainage ring 32 and the first waterproof half cover 27 and the second waterproof half cover 28 to close the connection part, so that rainwater flowing down the HDPE sheath 9 cannot enter the first waterproof half cover 27 and the second waterproof half cover 28 through the upper end of the first waterproof half cover 27 and the second waterproof half cover 28. At the same time, when the first waterproof half cover 27 and the second waterproof half cover 28 are assembled, the first waterproof half cover 27 is arranged directly above the second waterproof half cover 28, so that when rain falls on the first waterproof half cover 27, the two abutting sleeves 29 can shield the rain, avoiding direct contact of the rain with the abutting part of the first waterproof half cover 27 and the second waterproof half cover 28. In cooperation with the sealing gasket 31, rain and water vapor cannot enter the first waterproof half cover 27 and the second waterproof half cover 28 through the abutting part of the first waterproof half cover 27 and the second waterproof half cover 28, and rainwater flowing down the first waterproof half cover 27 and the second waterproof half cover 28 will directly fall on the outside of the anchor pipe 2. In cooperation with the second sealing ring, the connection part of the anchor pipe 2 and the first waterproof half cover 27 and the second waterproof half cover 28 is closed, effectively preventing rain and water vapor from entering the anchor pipe 2 through the lower end of the first waterproof half cover 27 and the second waterproof half cover 28, thereby ensuring the rain-blocking and sealing effect of the first waterproof half cover 27 and the second waterproof half cover 28 on the anchor pipe 2. When the stay cable swings, the first waterproof half cover 27 and the second waterproof half cover 28 can swing with it, so that the first waterproof half cover 27 and the second waterproof half cover 28 can ensure the rain-blocking and sealing effect during long-term use.

[0046] Optionally, the assembly part 37 comprises a wedge-shaped abutting ring 38 fixed in the assembly groove 33, a wedge-shaped abutting groove 39 arranged at the top end of the anchor pipe 2, two control half-rings 40 respectively fixed in the first waterproof half cover 27 and the second waterproof half cover 28, two abutting half-rings 41 respectively arranged at the lower ends of the two control half-rings 40 and in abutment with the top end of the anchor pipe 2, a plurality of guide rods 42 respectively fixed on the upper surfaces of the two abutting half-rings 41 and respectively penetrating through the two control half-rings 40, a plurality of limiting discs 43 respectively fixed on the top portions of the guide rods 42, a plurality of reset springs 44 movably sleeved outside the guide rods 42 and respectively fixedly connected with one of the control half-rings 40 and one of the limiting discs 43 at two ends, and two wedge-shaped half-rings 45 respectively fixed on the lower surfaces of the two abutting half-rings 41.

[0047] The two wedge-shaped half rings 45 are in contact with the wedge-shaped resisting grooves 39. When installing the anchor head, the lower ends of the first waterproof half cover 27 and the second waterproof half cover 28 are butted and are sleeved outside the anchor pipe 2 and the HDPE sheath 9, the user presses the first waterproof half cover 27 and the second waterproof half cover 28 downward, so that the two wedge-shaped half rings 45 are in contact with the wedge-shaped resisting grooves 39, and when the first waterproof half cover 27 and the second waterproof half cover 28 are continuously pressed downward, the two resisting half rings 41 move upward relative to the first waterproof half cover 27 and the second waterproof half cover 28, and under the cooperation of the guide rods 42 and the limiting discs 43, the reset springs 44 are stretched and deformed, at this time, the upper ends of the first waterproof half cover 27 and the second waterproof half cover 28 can be butted, and along with the user's hand release, the reset springs 44 reset, the first waterproof half cover 27 and the second waterproof half cover 28 are pushed upward, and the upper ends of the first waterproof half cover 27 and the second waterproof half cover 28 are inserted into the assembly grooves 33, under the control of the wedge-shaped resisting ring 38, along with the upward movement of the first waterproof half cover 27 and the second waterproof half cover 28, the upper ends of the first waterproof half cover 27 and the second waterproof half cover 28 are close to each other, and under the control of the wedge-shaped resisting grooves 39 and the two wedge-shaped half rings 45, when the two resisting half rings 41 are pushed by the reset springs 44, the lower ends of the first waterproof half cover 27 and the second waterproof half cover 28 are close to each other, thereby completing the sleeving assembly of the first waterproof half cover 27 and the second waterproof half cover 28 on the anchor pipe 2 and the HDPE sheath 9, effectively extruding the sealing gasket 31, the first sealing ring and the second sealing ring, improving the sealing effect of the sealing gasket 31, the first sealing ring and the second sealing ring. When the first waterproof half cover 27 and the second waterproof half cover 28 are removed, the first waterproof half cover 27 and the second waterproof half cover 28 are only needed to be pressed downward, the upper ends of the first waterproof half cover 27 and the second waterproof half cover 28 are controlled to be separated from the assembly grooves 33, and the first waterproof half cover 27 and the second waterproof half cover 28 can be quickly removed. The installation and disassembly of the first waterproof half cover 27 and the second waterproof half cover 28 are very convenient, and the practicability is high. When the first waterproof half cover 27 and the second waterproof half cover 28 are assembled, bolts are not needed to be used, which avoids that the bolts are corroded for a long time or are loose due to the shaking of the cable, and affects the waterproof sealing effect of the first waterproof half cover 27 and the second waterproof half cover 28.

[0048] Optionally, the reinforcing member 36 comprises two matching grooves 46 opened on one of the docking sleeves 29 and one of the docking blocks 30, a reinforcing sleeve 47 sleeved outside one of the docking sleeves 29 and one of the docking blocks 30, and two matching protrusions 48 symmetrically fixed in the reinforcing sleeve 47 and respectively matched and inserted in the two matching grooves 46. After the first waterproof half cover 27 and the second waterproof half cover 28 are docked and the upper end of the anchor pipe 2 is closed, the two reinforcing sleeves 47 on the two reinforcing members 36 are respectively sleeved outside the corresponding two docking blocks 30 and docking sleeves 29, the stability of the docking block 30 in the corresponding docking sleeve 29 is ensured, the stability of the first waterproof half cover 27 and the second waterproof half cover 28 in docking is ensured, the sealing effect of the two sealing gaskets 31 on the docking position of the first waterproof half cover 27 and the second waterproof half cover 28 is improved, the waterproof effect of the first waterproof half cover 27 and the second waterproof half cover 28 is effectively improved, and the stability of the two reinforcing sleeves 47 in the installation and sleeving on the two docking blocks 30 and the docking sleeves 29 can be ensured under the cooperation of the matching protrusions 48 and the matching grooves 46.

[0049] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model. For the skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cable-stayed bridge lower anchor head dehumidification auxiliary device, characterized in that, It comprises: The anchor pull plate (1) is provided in the anchor pipe (2), the anchor cup (3) is provided in the anchor pipe (2), the anchor ring (4) is fixedly sleeved outside the anchor cup (3) and abuts with the anchor pipe (2), the connecting barrel (5) is installed at the top end of the anchor cup (3), the wire separating plate (6) is arranged at the lower end in the anchor cup (3), a plurality of high-strength steel wires (7) are arranged on the wire separating plate (6), the steel wire bundle (8) is bundled by a plurality of high-strength steel wires (7) and placed in the connecting barrel (5), the HDPE sheath (9) is sleeved outside the steel wire bundle (8), the shock absorbing plug (10) is arranged between the HDPE sheath (9) and the anchor pipe (2), the waterproof assembly (11) is installed on the top end of the anchor pipe (2) and the HDPE sheath (9), the protection assembly (12) is arranged on the anchor pull plate (1) and the anchor cup (3), and the dehumidification assembly (13) is arranged on the anchor cup (3) and the protection assembly (12), wherein The waterproof assembly (11) is adapted to be stably assembled at the top end of the anchor pipe (2) and closed between the top end of the anchor pipe (2) and the HDPE sheath (9); The protection assembly (12) is adapted to close and protect the lower end of the anchor cup (3); The dehumidification assembly (13) is adapted to deliver dry air produced by an external dry air preparation device into the anchor cup (3).

2. The auxiliary device for dehumidifying the lower anchor head of a cable-stayed bridge according to claim 1, wherein The protection assembly (12) comprises a protection cover (14) sleeved on the lower end of the anchor cup (3) and detachably fixedly connected with the anchor pull plate (1) through a plurality of bolts, a sealing ring (15) fixed on the top of the protection cover (14) and abutting with the anchor pull plate (1), and a protection plate (16) installed on the lower end of the anchor cup (3) through a plurality of bolts.

3. The auxiliary device for dehumidifying the lower anchor head of a cable-stayed bridge according to claim 2, wherein The dehumidification assembly (13) comprises a plurality of inner air conveying pipes (17) arranged in an annular array in the anchor cup (3) and having one end penetrating through the wire separating plate (6), an inner air exhaust pipe (18) arranged in the anchor cup (3) and having one end penetrating through the center part of the wire separating plate (6), an annular shunt pipe (19) fixed in the protection cover (14), a plurality of outer air conveying pipes (20) arranged in the protection cover (14) and communicating with the annular shunt pipe (19), an outer air exhaust pipe (21) installed in the middle part of the protection cover (14), an air inlet pipe (22) installed on the protection cover (14) and having one end communicating with the annular shunt pipe (19), and a communication member (23) installed on the protection plate (16); The air inlet pipe (22) and the outer air exhaust pipe (21) are in communication with the external dry air preparation device.

4. The auxiliary device for dehumidifying the lower anchor head of a cable-stayed bridge according to claim 3, wherein The communication piece (23) comprises a plurality of communication pipes (24) installed on the protection plate (16) and corresponding to the inner exhaust pipe (18) and the plurality of inner gas conveying pipes (17), a plurality of butt joint grooves (25) respectively opened at both ends of the plurality of communication pipes (24), and a plurality of rubber gaskets (26) respectively arranged in the plurality of butt joint grooves (25); The outer exhaust pipe (21), the inner exhaust pipe (18), the plurality of outer gas conveying pipes (20) and the plurality of inner gas conveying pipes (17) are respectively slidably inserted into the plurality of butt joint grooves (25).

5. The auxiliary device for removing moisture from the lower anchor head of a cable-stayed bridge according to claim 4, characterized in that The waterproof assembly (11) comprises a first waterproof half cover (27) and a second waterproof half cover (28) sleeved outside the HDPE sheath (9) and the anchor pipe (2), two butt joint sleeves (29) symmetrically fixed on the first waterproof half cover (27), two butt joint blocks (30) symmetrically fixed on the second waterproof half cover (28) and respectively arranged in the two butt joint sleeves (29), two sealing gaskets (31) respectively fixed on the two butt joint blocks (30) and respectively abutting against the two butt joint sleeves (29), a drainage ring (32) fixedly sleeved on the HDPE sheath (9), an assembly groove (33) opened in the drainage ring (32), a first rubber ring (34) fixed on the drainage ring (32) and the assembly groove (33), a second rubber ring (35) fixedly sleeved outside the anchor pipe (2), two reinforcing members (36) respectively arranged on the two butt joint sleeves (29) and the butt joint blocks (30), and an assembly member (37) arranged at the top end of the anchor pipe (2) and in the first waterproof half cover (27), the second waterproof half cover (28) and the drainage ring (32); The first rubber ring (34) abuts against the outer wall of the upper end of the first waterproof half cover (27) and the second waterproof half cover (28), and the second rubber ring (35) abuts against the inner wall of the lower end of the first waterproof half cover (27) and the second waterproof half cover (28).

6. The auxiliary device for removing moisture from the lower anchor head of a cable-stayed bridge according to claim 5, characterized in that The assembling piece (37) comprises a wedge-shaped resisting ring (38) fixed in the assembling groove (33), a wedge-shaped resisting groove (39) opened at the top end of the anchor pipe (2), two control half rings (40) respectively fixed in the first waterproof half cover (27) and the second waterproof half cover (28), two resisting half rings (41) respectively arranged at the lower ends of the two control half rings (40) and abutting against the top end of the anchor pipe (2), a plurality of guide rods (42) respectively fixed on the upper surfaces of the two resisting half rings (41) and respectively penetrating through the two control half rings (40), a plurality of limiting discs (43) respectively fixed at the top portions of the guide rods (42), a plurality of reset springs (44) movably sleeved outside the guide rods (42) and respectively fixed and connected at both ends with one of the control half rings (40) and one of the limiting discs (43), and two wedge-shaped half rings (45) respectively fixed on the lower surfaces of the two resisting half rings (41). The two wedge-shaped half rings (45) abut against the wedge-shaped resisting groove (39).

7. The auxiliary device for removing moisture from the lower anchor head of a cable-stayed bridge according to claim 6, characterized in that The reinforcing piece (36) comprises two adaptive grooves (46) opened on one of the butt joint sleeves (29) and one of the butt joint blocks (30), a reinforcing sleeve (47) sleeved outside one of the butt joint sleeves (29) and one of the butt joint blocks (30), and two adaptive protrusions (48) symmetrically fixed in the reinforcing sleeve (47) and respectively slidably inserted into the two adaptive grooves (46).

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