Cold-resistant anti-freezing tunnel drainage blind pipe mounting structure

Abstract

The application relates to the technical field of water supply and drainage facilities, in particular to a cold-resistant anti-freezing tunnel drainage blind pipe mounting structure, which comprises blind pipe bodies, the blind pipe bodies are coaxially arranged in multiple numbers along the depth direction of a tunnel, and wiring assemblies are arranged at the end portions of the blind pipe bodies; heating devices arranged on the coaxially arranged multiple blind pipe bodies are connected with the same power supply through the wiring assemblies; and the application has the effect of facilitating the maintenance of the tunnel heating blind pipe.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water supply and drainage facilities, in particular to a cold-resistant and anti-freezing tunnel drainage blind pipe mounting structure. BACKGROUND

[0002] At present, the tunnel ring drainage blind pipes used on the railway are corrugated circular blind pipes made of PE materials, in the autumn and winter seasons in high-cold regions, the temperature at the position of the tunnel portal is relatively low, so the part of the blind pipe close to the tunnel portal is prone to freezing ice, when the air temperature rises, the ice starts to melt from the top to the bottom of the tunnel, due to the temperature difference and time difference, the bottom longitudinal drainage blind pipe melts slowly, so that the water flow from top to bottom is blocked and cannot effectively flow, thereby causing the seepage of the tunnel surrounding rock, which may cause seepage and may damage the lining structure, and even seriously endanger the driving safety.

[0003] In order to reduce the occurrence of the problem of poor drainage caused by the freezing of the blind pipe, heating equipment for heating the blind pipe is usually arranged on the blind pipe, but the blind pipe is arranged in the tunnel surrounding rock, and the blind pipe is usually a plurality of short pipes coaxially spliced together, if part of the heating equipment on the blind pipe fails, the heating effect of the whole blind pipe decreases, when overhauling, the heating equipment on the whole blind pipe needs to be checked, thereby causing inconvenience to the overhauling of the tunnel heating blind pipe. SUMMARY

[0004] In order to facilitate the overhauling of the tunnel heating blind pipe, the application provides a cold-resistant and anti-freezing tunnel drainage blind pipe mounting structure.

[0005] The cold-resistant and anti-freezing tunnel drainage blind pipe mounting structure provided by the application adopts the following technical scheme:

[0006] The cold-resistant and anti-freezing tunnel drainage blind pipe mounting structure comprises a blind pipe body, a plurality of blind pipe bodies are coaxially arranged along the depth direction of the tunnel, and a wiring assembly is arranged at the end of each blind pipe body, and the heating equipment on the coaxially arranged plurality of blind pipe bodies is connected with the same power supply through the wiring assembly.

[0007] By adopting the above technical scheme, the heating equipment on the plurality of blind pipe bodies is connected with the same power supply in a parallel mode, so that if the heating wire on a blind pipe has a problem, the influence on the heating operation of the heating wire on other blind pipes is reduced, and the overhauling of the tunnel heating blind pipe is facilitated.

[0008] Optionally, the wiring assembly comprises a first connector and a second connector, the first connector is used for connecting with the heating device, the second connector is used for connecting with the power supply, the first connector is provided with a first electrode at the end away from the heating device, the first electrode is electrically connected with the heating device, the second connector is provided with a second electrode at the end, the second electrode is used for electrically connecting with the first electrode, the first connector is provided with a slot used for plugging with the second connector, the slot is arranged in a ring shape, the slot is coaxially arranged with the first connector, the second connector is connected with a connecting ring at the end away from the second wire, the connecting ring is coaxially arranged with the second connector, and the connecting ring is plugged with the slot.

[0009] By adopting the above technical scheme, the connecting ring is inserted into the slot, the first electrode is electrically connected with the second electrode, and the plugging between the connecting ring and the slot improves the connection stability between the first connector and the second connector and improves the sealing between the first connector and the second connector.

[0010] Optionally, a positioning groove is arranged on the side wall of the slot towards the axis of the first connector, a positioning block adapted to the positioning groove is connected to the inner side wall of the connecting ring, and the positioning block is plugged with the positioning groove.

[0011] By adopting the above technical scheme, when the connecting ring is inserted into the slot and the positioning block is inserted into the positioning groove, the plugging between the first connector and the second connector is positioned and guided.

[0012] Optionally, a limiting ring is coaxially connected to the second connector, a sealing ring is sleeved on the connecting ring, the side wall of the sealing ring towards the connecting ring abuts against the limiting ring, and the end of the connecting ring abuts against the sealing ring when the connecting ring is inserted into the slot.

[0013] By adopting the above technical scheme, the sealing ring improves the sealing effect of the connection between the first connector and the second connector.

[0014] Optionally, a thread is arranged on the outer side wall of the first connector, a sealing ring is sleeved on the second connector, a thread groove is arranged on the inner side wall of the sealing ring, the sealing ring is threadedly connected with the first connector, and an abutting ring is connected to the end of the sealing ring close to the second wire.

[0015] By adopting the above technical scheme, after the first connector and the second connector are plugged together, the sealing ring is threadedly connected with the first connector by rotating the sealing ring, until the abutting ring abuts against the limiting ring, thereby improving the stability of the connection between the first connector and the second connector.

[0016] Optionally, the wiring assembly comprises a connecting seat, a first connector and a second connector, the connecting seat is polygonal in cross section, the first connector is provided with a first electrode for electrically connecting with the heating device, the second connector is provided with a second electrode for electrically connecting with the first electrode, the connecting seat is provided with a plurality of second connectors, and the first connector is inserted into the second connector.

[0017] By adopting the above technical scheme, the heating device on the blind pipe body is connected in parallel through the first connector, the first connector is inserted into the second connector on the connecting seat, and the heating wire on the blind pipe body is connected in parallel. Compared with the heating device being connected with the power supply through one wiring assembly, the orderliness of the connection between the heating device and the power supply is improved.

[0018] Optionally, the second connector is slidingly connected to the connecting seat in the axial direction of the connecting seat, the side wall of the connecting seat is provided with an insertion slot corresponding to the second connector, and the first connector is inserted into the insertion slot.

[0019] Optionally, the bottom of the insertion slot is provided with a spring groove, the bottom of the spring groove is connected with a stop block through a compression spring, the connecting seat is provided with a receiving cavity for sliding of the second connector, the connecting seat is provided with a communication cavity for communication between the spring groove and the receiving cavity, a connecting rod is hinged in the communication cavity, the connecting rod is bent, the bending of the connecting rod is hinged to the side wall of the communication cavity, one end of the connecting rod is slidingly connected to the end of the stop block close to the compression spring, the other end of the connecting rod is slidingly connected to the second connector, the first connector is slidingly connected to the connecting rod along the length direction of the end of the connecting rod close to the first connector, and the second connector is slidingly connected to the connecting rod along the length direction of the end of the connecting rod close to the second connector.

[0020] By adopting the above technical scheme, the first connector is inserted into the insertion slot until the first connector abuts against the stop block, the compression spring is compressed, the stop block moves towards the bottom of the spring groove, the stop block drives the connecting rod to rotate, the end of the connecting rod connected to the second connector drives the sliding block to move towards the insertion slot, the second connector moves towards the insertion slot, and the second connector is inserted into the first connector under the driving of the connecting rod.

[0021] Optionally, a sealing plate for sealing the insertion slot is slidingly connected to the side wall of the insertion slot close to the slot.

[0022] By adopting the above technical scheme, the sealing plate is arranged to seal the insertion slot, the sealing effect of the insertion slot is improved, and the possibility of water seepage into the insertion slot is reduced.

[0023] Optionally, two sealing plates are arranged in each of the plug-in slots, and sliding grooves are arranged on opposite side walls of the plug-in slots for the sliding of the sealing plates, and the side walls adjacent to the sliding grooves are provided with locking grooves, and locking rods are arranged in the locking grooves and slide in the direction towards or away from the axis of the plug-in slots, and the moving direction of the locking rods is perpendicular to the moving direction of the sealing plates, and mounting cavities are arranged on the connecting seats, and one mounting cavity is arranged on each side of the plug-in slot, and the mounting cavities are located on both sides of the locking rods, and gears are rotatably connected to the side walls of the mounting cavities, and torsional springs are arranged on the rotation axes between the gears and the side walls of the mounting cavities, and first racks are connected to the locking rods in the moving direction of the locking rods, and second racks are connected to the sealing plates in the moving direction of the sealing plates, and the first racks and the second racks are engaged with the gears, and the side walls of the first connectors are provided with limiting grooves for the plug-in of the sealing plates.

[0024] By adopting the above technical scheme, the locking rods are pressed towards the axis of the plug-in slots, the first racks drive the second racks to move through the gears, and the second racks drive the sealing plates to move away from each other.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. The heating devices on the multi-section blind pipe bodies are connected to the same power supply in parallel, so that if a heating wire on a certain section of the blind pipe has a problem, the influence on the heating operation of the heating wires on other blind pipes is reduced, and the tunnel heating blind pipe is convenient to maintain;

[0027] 2. The connecting ring is inserted into the insertion slot, the first electrode is electrically connected to the second electrode, and the insertion between the connecting ring and the insertion slot improves the connection stability between the first connector and the second connector and improves the sealing between the first connector and the second connector;

[0028] 3. When the connecting ring is inserted into the insertion slot and the positioning block is inserted into the positioning slot, the insertion between the first connector and the second connector is convenient to position and guide. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of a cold-resistant and anti-freezing tunnel drainage blind pipe installation structure according to Embodiment 1 of the present application;

[0030] Figure 2 is a schematic diagram of the structure of a blind pipe body according to Embodiment 1 of the present application;

[0031] Figure 3 is a schematic diagram of the positional relationship between a first connector and a second connector according to Embodiment 1 of the present application;

[0032] Figure 4is a schematic diagram for embodying the position relationship between the connecting ring and the slot in Embodiment 1 of the present application;

[0033] Figure 5 is a schematic diagram for embodying the position relationship between the connecting assembly and the blind pipe body in Embodiment 2 of the present application;

[0034] Figure 6 is a schematic diagram for embodying the position relationship between the first joint and the connecting seat in Embodiment 2 of the present application;

[0035] Figure 7 is a schematic diagram for embodying the position relationship between the first joint and the second joint in Embodiment 2 of the present application.

[0036] Legend of reference signs:

[0037] 1, blind pipe body; 2, heating wire; 3, connecting wire; 4, water-permeable hole; 5, embedding slot; 6, gap; 7, tunnel; 8, isolation layer; 9, wiring assembly; 10, first electric wire; 11, second electric wire; 12, first connecting head; 13, second connecting head; 14, slot; 15, positioning slot; 16, connecting ring; 17, positioning block; 18, limiting ring; 19, sealing ring; 20, abutting ring; 21, connecting seat; 22, first joint; 23, second joint; 24, plug-in slot; 25, sealing plate; 26, locking rod; 27, gear; 28, first rack; 29, second rack; 30, mounting cavity; 31, containing cavity; 32, abutting plate; 33, waterproof column; 34, sliding sleeve; 35, elastic groove; 36, compression spring; 37, abutting block; 38, connecting rod; 39, sliding opening; 40, sliding block. DETAILED DESCRIPTION

[0038] The present application discloses a cold-resistant and anti-freezing tunnel drainage blind pipe mounting structure.

[0039] Embodiment 1

[0040] With reference to Figure 1 and Figure 2 A cold-resistant and anti-freezing tunnel drainage blind pipe mounting structure, comprising a blind pipe body 1, a heating wire 2, and a connecting wire 3 for connecting the heating wire 2 and a power supply, the blind pipe body 1 is provided in two groups along the arch wall of a tunnel 7, the blind pipe body 1 is arranged at two ends of the arch wall of the tunnel 7 close to the ground, along the extension direction of the tunnel 7, each group of blind pipe bodies 1 has multiple blind pipe bodies 1 coaxially arranged towards the depth direction of the tunnel 7, starting from the portal of the tunnel 7, and the blind pipe bodies 1 are arranged in a depth range of 300-500 meters from the portal of the tunnel 7.

[0041] With reference to Figure 1 and Figure 2, the blind pipe body 1 is provided with a plurality of water permeable holes 4, the water permeable holes 4 are arranged on the outer side wall of the blind pipe body 1 arranged in the direction away from the ground, the water permeable holes 4 penetrate the side wall of the blind pipe body 1, in the embodiment, the blind pipe body 1 is a corrugated pipe made of high-density polyethylene material HDPE, since the natural water in China is mainly alkaline water, therefore, the antioxidant resistant to alkali is supplemented in the high-density polyethylene material, so as to improve the alkali resistance of the blind pipe body 1, which can effectively inhibit the calcification of the blind pipe body 1 itself and the adsorption of surface alkaline substances, the blind pipe body 1 is formed by hot extrusion.

[0042] With reference to Figure 1 And Figure 2 The heating wire 2 is spirally connected on the outer side wall of the blind pipe body 1, the outer side wall of the blind pipe body 1 is provided with an embedding groove 5 for accommodating the heating wire 2, the embedding groove 5 penetrates the end of the blind pipe body 1; the outer side wall of the blind pipe body 1 is provided with a heat-conducting layer, the heat-conducting layer can be water-permeable, the heat-conducting layer is laid on the outer side wall of the blind pipe body 1 and the side wall of the embedding groove 5, in the embodiment, the heat-conducting layer is asbestos net, the asbestos net is located between the heating wire 2 and the blind pipe body 1, the asbestos net is arranged to improve the uniformity of the heating of the blind pipe body 1 by the heating wire 2.

[0043] With reference to Figure 1 And Figure 2 The end of the blind pipe body 1 close to the tunnel 7 portal is provided with an opening 6 for the connection wire 3 to pass through, the opening 6 is arranged opposite to the embedding groove 5, the opening 6 is communicated with the embedding groove 5, the opening 6 penetrates the inner side wall of the blind pipe body 1, the connection wire 3 is bent towards the axis of the blind pipe body 1, the connection wire 3 is located in the opening 6, the connection wire 3 passes through the opening 6 and is bent towards the blind pipe body 1, so as to conveniently hide the connection wire 3.

[0044] With reference to Figure 1 And Figure 2 The blind pipe body 1 is sleeved with an isolation layer 8, the isolation layer 8 is used for isolating the impurities such as silt in the seepage water, the isolation layer 8 is interlacedly woven by high-strength polyester filaments and long-fiber non-woven fabric, the weaving structure improves the lightness and durability of the isolation layer 8, improves the service life of the isolation layer 8, reduces the possibility of blocking the water permeable holes on the blind pipe body 1 due to the rotting of the isolation layer 8, the arrangement of the isolation layer 8 can not only meet the seepage condition of the surrounding rock of the tunnel 7, but also can play a heat preservation role on the blind pipe.

[0045] With reference to Figure 2 And Figure 3The end of each blind pipe body 1 is provided with a wiring assembly 9, the wiring assembly 9 comprises a first electric wire 10, a second electric wire 11, a first connecting head 12 and a second connecting head 13, the first electric wire 10 is used for connecting with the connecting wire 3, the second electric wire 11 is used for connecting with the power supply wire, the first connecting head 12 is connected with the end of the first electric wire 10 away from the connecting wire 3, the second connecting head 13 is inserted with the end of the second electric wire 11 away from the power supply wire, the second electric wire 11 on the connecting assembly of the end of the adjacent blind pipe body 1 in the same group of blind pipe bodies 1 is connected with the power supply wire of the same power supply.

[0046] When the first electric wire 10 is connected with the connecting wire 3, the first electric wire 10 and the connecting wire 3 are first abutted together, then the first electric wire 10 and the connecting wire 3 are connected together through the insulating glue, then the solid sealing glue is wrapped on the insulating glue between the first electric wire 10 and the connecting wire 3, then the waterproof adhesive tape is wrapped on the solid sealing glue, and finally the heat shrink sealing sleeve is sleeved on the waterproof adhesive tape to seal and fix. The connection mode between the second electric wire 11 and the power supply wire is the same as the connection mode between the first electric wire 10 and the connecting wire 3.

[0047] Referring to Figure 3 and Figure 4 , the end of the first connecting head 12 away from the first electric wire 10 is provided with a first electrode, the first electrode is electrically connected with the first electric wire 10, the first connecting head 12 is provided with a insertion slot 14 for inserting the second connecting head 13, the insertion slot 14 is arranged in a ring shape, the insertion slot 14 is coaxially arranged with the first connecting head 12, a positioning groove 15 is arranged on the side wall of the insertion slot 14 facing the axis of the first connecting head 12, a connecting ring 16 is connected with the end of the second connecting head 13 away from the second electric wire 11, the connecting ring 16 is coaxially arranged with the second connecting head 13, a positioning block 17 adapted with the positioning groove 15 is connected on the inner side wall of the connecting ring 16, the positioning block 17 is integrally formed with the connecting ring 16, a limiting ring 18 is coaxially connected on the second connecting head 13, a sealing ring is sleeved on the connecting ring 16, the sealing ring is abutted with the end of the limiting ring 18 close to the connecting ring 16, a second electrode is arranged on the end of the second connecting head 13 away from the second electric wire 11, the second electrode is electrically connected with the second electric wire 11. The first connecting head 12 and the second connecting head 13 are close to each other, the connecting ring 16 is inserted into the insertion slot 14, the positioning block 17 is inserted into the positioning groove 15, the end of the first connecting head 12 away from the first electric wire 10 is abutted with the sealing ring, the sealing ring is clamped between the first connecting head 12 and the limiting ring 18, the first electrode is electrically connected with the second electrode, thereby realizing the connection between the first electric wire 10 and the second electric wire 11.

[0048] Referring to Figure 3 and Figure 4The outer side wall of the first connecting head 12 is provided with threads, the second connecting head 13 is sleeved with a sealing ring 19, the inner side wall of the sealing ring 19 is provided with a threaded groove, one end of the sealing ring 19 close to the second electric wire 11 is connected with an abutting ring 20, after the first connecting head 12 and the second connecting head 13 are inserted together, the sealing ring 19 is threadedly connected with the first connecting head 12, and the abutting ring 20 abuts against the side wall of the limiting ring 18 away from the connecting ring 16.

[0049] The implementation principle of the embodiment 1 of the present application is as follows:

[0050] The connecting wire 3 on the multi-section blind pipe body 1 is connected with the power supply through the connecting assembly, the connecting wire 3 on the multi-section blind pipe body 1 is connected with the power supply in a parallel mode, so that if the heating wire 2 on a certain section of the blind pipe has a problem, the influence on the heating operation of the heating wire 2 on other blind pipes is reduced, and the blind pipe for heating the tunnel 7 is facilitated to be maintained.

[0051] Embodiment 2

[0052] Reference Figure 5 The difference from the embodiment 1 is that the heating wire 2 is connected to the outer side wall of the blind pipe body 1 along the axial direction of the blind pipe, the heating wire 2 is provided with a plurality of sections along the circumferential direction of the blind pipe body 1, in the embodiment, the heating wire 2 is provided with three sections, and the connecting assembly comprises a connecting seat 21, a first connector 22, a second connector 23, a first electric wire 10 and a second electric wire 11.

[0053] Reference Figure 5 and Figure 6 The cross section of the connecting seat 21 is provided in a polygonal shape, in the embodiment, the cross section of the connecting seat 21 is provided in a hexagonal shape, the side wall of the connecting seat 21 is provided with an insertion slot 24, the side wall of the insertion slot 24 close to the slot is slidably connected with a sealing plate 25 for closing the insertion slot 24, the sealing plate 25 in each insertion slot 24 is provided with two, the opposite side walls in the insertion slot 24 are provided with a sliding groove, the sealing plate 25 is inserted in the sliding groove and moves towards or away from the axis of the insertion slot 24, the side wall adjacent to the sliding groove is provided with a locking groove, the locking groove is slidably provided with a locking rod 26 along the direction towards or away from the axis of the insertion slot 24, the locking rod 26 is slidably connected with the connecting seat 21, the locking rod 26 penetrates through the end surface of the connecting seat 21, the moving direction of the locking rod 26 is perpendicular to the moving direction of the sealing plate 25, the connecting seat 21 is provided with a mounting cavity 30, one mounting cavity 30 is arranged on each side of the insertion slot 24, the mounting cavity 30 is located on the two sides of the locking rod 26, the side wall of the mounting cavity 30 is rotatably connected with a gear 27, a torsional spring is sleeved on the rotation shaft between the gear 27 and the side wall of the mounting cavity 30, the locking rod 26 is connected with a first gear rack 28 along the moving direction thereof, the sealing plate 25 is connected with a second gear rack 29 along the moving direction thereof, and the first gear rack 28 and the second gear rack 29 are engaged with the gear 27.

[0054] ReferenceFigure 5 And Figure 7 The second joint 23 is provided in plurality, the number of the second joint 23 is consistent with the number of the plug-in slot 24, six second joints 23 are provided in the embodiment, the second joint 23 is provided opposite to the plug-in slot 24, the accommodating cavity 31 for accommodating the second joint 23 is provided on the connecting seat 21 along the axial direction of the connecting seat 21, the accommodating cavity 31 is communicated with the plug-in slot 24, the accommodating cavity 31 penetrates one side wall of the connecting seat 21, the second joint 23 is located in the accommodating cavity 31 and is connected with the connecting seat 21 along the axial direction of the connecting seat 21, the opposite side wall of the end of the accommodating cavity 31 close to the plug-in slot 24 is connected with the abutting plate 32 through the spring, the end of the abutting plate 32 close to each other is provided as an arc shape away from the edge of the plug-in slot 24, the end of the abutting plate 32 close to each other is connected with the sealing strip, the end of the second joint 23 close to the plug-in slot 24 is provided with the second electrode, the other end is connected with the second electric wire 11, the waterproof column 33 corresponding to the accommodating cavity 31 is connected on the end face of the connecting seat 21, the waterproof column 33 is hollowly provided, the waterproof column 33 is coaxially provided with the accommodating cavity 31, the outer side wall of the waterproof column 33 away from the connecting seat 21 is obliquely provided towards the axial direction of the waterproof column 33, the second electric wire 11 penetrates the accommodating cavity 31 and the waterproof column 33, the sliding sleeve 34 is fixedly connected on the second electric wire 11, the second electric wire 11 penetrates the sliding sleeve 34, the sliding sleeve 34 is slidably connected in the waterproof column 33.

[0055] Referring to Figure 5 And Figure 7 The first joint 22 is inserted in the plug-in slot 24, the limiting slot for inserting the sealing plate 25 is provided on the side wall of the first joint 22, the connecting slot for inserting the second joint 23 is provided on the side wall of the first joint 22 opposite to the accommodating slot, the first electrode is provided on the bottom of the connecting slot, the elastic groove 35 is provided on the bottom of the plug-in slot 24, the abutting block 37 is connected with the elastic groove 35 through the compression spring 36, the communicating cavity for communicating the elastic groove 35 and the accommodating cavity 31 is provided on the connecting seat 21, the connecting rod 38 is hingedly connected in the communicating cavity, the connecting rod 38 is bended, the bending of the connecting rod 38 is hingedly connected on the side wall of the communicating cavity, one end of the connecting rod 38 is slidably connected with the end of the abutting block 37 close to the compression spring 36, the other end is slidably connected with the second joint 23, the sliding opening 39 is provided on the length direction of the connecting rod 38 at both ends of the connecting rod 38, the sliding block 40 is connected with the bottom of the second joint 23 and the bottom of the abutting block 37, the connecting rod 38 is located below the second joint 23, the sliding block 40 penetrates the sliding opening 39 and is slidably matched with the sliding opening 39 along the length direction of the sliding opening 39.

[0056] The implementation principle of the embodiment 2 of the application is as follows:

[0057] The lock rod 26 is pressed towards the axis of the insertion slot 24, the first rack 28 drives the second rack 29 to move through the gear 27, the second rack 29 drives the cover plates 25 to move away from each other, the first connector 22 is inserted into the insertion slot 24 until the first connector 22 abuts against the abutting block 37, the lock rod 26 is released, under the action of the torsional spring, the cover plates 25 move towards the first connector 22 and are inserted into the first connector 22; the compression spring 36 is compressed, the abutting block 37 moves towards the bottom of the elastic groove 35, the abutting block 37 drives the connecting rod 38 to rotate, the connecting rod 38 drives the sliding block 40 to move towards the insertion slot 24 through the end connected with the second connector 23, the second connector 23 moves towards the insertion slot 24, the second connector 23 abuts against the fillet on the abutting plate 32 and drives the abutting plate 32 to abut into the sidewall of the accommodating cavity 31, the second connector 23 is inserted into the first connector 22 under the drive of the connecting rod 38.

[0058] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cold-resistant and frost-proof tunnel drainage blind pipe installation structure, comprising a blind pipe body (1), wherein multiple blind pipe bodies (1) are coaxially arranged along the depth direction of the tunnel (7), and further comprising a wiring assembly (9) disposed at the end of each blind pipe body (1), wherein heating devices on the multiple coaxially arranged blind pipe bodies (1) are connected to the same power source through the wiring assembly (9); characterized in that: The wiring assembly (9) includes a connector (21), a first connector (22), and a second connector (23). The connector (21) has a polygonal cross-section. The first connector (22) has a first electrode electrically connected to the heating device. The second connector (23) has a second electrode electrically connected to the first electrode. The connector (21) has multiple second connectors (23). The first connector (22) and the second connector (23) are plugged into each other. The second connector (23) is slidably connected to the connector (21) along the axial direction. The side wall of the connector (21) has a plug-in groove (24) corresponding to the second connector (23). The first connector (22) is plugged into the plug-in groove (24). The bottom of the plug-in groove (24) has a spring groove (35). The bottom of the spring groove (35) is connected to a stop block (37) by a compression spring (36). The connecting seat (21) is provided with a receiving cavity (31) for the second connector (23) to slide. The connecting seat (21) is provided with a communicating cavity for connecting the spring groove (35) and the receiving cavity (31). A connecting rod (38) is hinged in the communicating cavity. The connecting rod (38) is bent. The bend of the connecting rod (38) is hinged to the side wall of the communicating cavity. One end of the connecting rod (38) is slidably connected to the end of the abutment block (37) near the compression spring (36), and the other end is slidably connected to the second connector (23). The first connector (22) and the connecting rod (38) are slidably engaged along the length direction of the end of the connecting rod (38) near the first connector (22). The second connector (23) and the connecting rod (38) are slidably engaged along the length direction of the end of the connecting rod (38) near the second connector (23). A sealing plate (25) for closing the insertion groove (24) is slidably connected on the side wall of the insertion groove (24) near the groove opening.Two sealing plates (25) are provided in each of the insertion slots (24). Sliding grooves for the sealing plates (25) are provided on opposite sidewalls of the insertion slots (24). The sealing plates (25) move toward or away from the axis of the insertion slot (24). A locking groove is provided on the sidewall adjacent to the sliding groove. A locking rod (26) is slidably provided in the locking groove along the direction toward or away from the axis of the insertion slot (24). The moving direction of the locking rod (26) is perpendicular to the moving direction of the sealing plate (25). An installation cavity (30) is provided on the connecting seat (21). Each insertion slot (24) has two... A mounting cavity (30) is provided, located on both sides of the locking rod (26). A gear (27) is rotatably connected to the side wall of the mounting cavity (30). A torsion spring is sleeved on the rotating shaft between the gear (27) and the side wall of the mounting cavity (30). A first rack (28) is connected to the locking rod (26) along its moving direction, and a second rack (29) is connected to the sealing plate (25) along its moving direction. Both the first rack (28) and the second rack (29) mesh with the gear (27). A limiting groove for the sealing plate (25) to be inserted is provided on the side wall of the first connector (22).

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