A connecting passage tunneling equipment and a connecting passage construction method

Abstract

The present invention discloses a connecting passage tunneling equipment and a connecting passage construction method, which include a tunneling equipment body, tunneling cutters and cutting cutters. The cutting cutters are arranged on the tunneling equipment body; a rotation driving device is connected to the cutting cutters to drive the cutting cutters to rotate around the axis of the tunneling equipment body; a sliding driving device is connected to the cutting cutters to drive the cutting cutters to move axially along the tunneling equipment body. At the starting end, the starting end segment can be directly crushed and broken by the tunneling cutters without manual assistance in removing the broken segments; at the receiving end, the reinforced concrete segment is cut by the cutting cutters to solve the problem that it is difficult to quickly break the segment due to the reverse arc contact between the main tunnel segment at the receiving end and the cutter head; the sliding driving device drives the cutting cutters to move axially relative to the tunneling equipment body, and at the same time, the rotation driving device drives the cutting cutters to rotate around the axis of the tunneling equipment body to realize the cutting of the segment.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and more specifically, to a cross-passage tunneling equipment, and also to a cross-passage construction method. Background Art

[0002] A cross-passage is usually arranged between two-track tunnels and connects the two main tunnels to meet various requirements such as later services, emergency shelters, and rescues. The traditional construction methods for cross-passages mainly include freezing method construction and grouting reinforcement method construction. The above methods all require ground reinforcement and water stop, and then manual excavation is used. There are disadvantages such as complex settlement control, low construction efficiency, high cost, long construction period, and low safety of construction personnel.

[0003] Therefore, the existing technology has emerged with the cross-passage shield / pipelining jacking construction method. During the construction process, a shield machine / pipelining jacking machine is advanced, and precast concrete segments are assembled to finally form the cross-passage structure. The existing cross-passage shield / pipelining jacking construction equipment cannot directly break through reinforced concrete segments, and the full-rotation equipment requires manual assistance to remove the broken segments at the starting end, with low efficiency and the safety of personnel not being maximally guaranteed; while the use of an arc-shaped cutter head results in the main tunnel segments and the cutter head being in an inverse arc contact at the receiving end, making it difficult to quickly break through the segments. Summary of the Invention

[0004] In view of this, the first object of the present invention is to provide a cross-passage tunneling equipment to solve the problems that the existing cross-passage construction equipment cannot directly break through reinforced concrete segments and the segment breaking efficiency is low.

[0005] In order to achieve the above first object, the present invention provides the following technical solutions:

[0006] A cross-passage tunneling equipment, including a tunneling equipment body and a tunneling cutter rotatably arranged on the tunneling equipment body, further including:

[0007] A cutting cutter with a cutter body at the front end and capable of cutting segments, the cutting cutter is arranged on the tunneling equipment body;

[0008] A rotation driving device arranged on the tunneling equipment body, the rotation driving device is connected to the cutting cutter to drive the cutting cutter to rotate around the axis of the tunneling equipment body;

[0009] A sliding driving device arranged on the tunneling equipment body, the sliding driving device is connected to the cutting cutter to drive the cutting cutter to move axially along the tunneling equipment body.

[0010] Preferably, the rotation axis of the tunneling cutter coincides with the axis of the tunneling equipment body; the output end of the rotation driving device protrudes axially from the end wall of the tunneling equipment body, and the tunneling cutter is connected to the tunneling equipment body through the output end of the rotation driving device to rotate driven by the rotation driving device.

[0011] Preferably, the tunneling cutter is provided with a locking component for connecting the cutting tool, and when locked, the rotation driving device can drive the cutting tool to rotate through the locking component.

[0012] Preferably, the locking component includes:

[0013] A locking power member with a fixed end fixedly connected to the tunneling cutter, and a locking member is connected to the movable end of the locking power member. The locking power member drives the locking member to move in a direction close to or away from the cutting tool;

[0014] The cutting tool is provided with a locking position that can cooperate with the locking member when the cutting tool moves axially by a preset distance.

[0015] Preferably, it further includes:

[0016] An auxiliary cutter provided at the end of the tunneling cutter close to the cutting tool;

[0017] An auxiliary cutter power driving device for driving the auxiliary cutter to extend / retract relative to the end wall of the tunneling cutter; when the auxiliary cutter extends, the distance between the auxiliary cutter and the axis of the tunneling equipment body is greater than or equal to the radius of the tunneling equipment body to assist the tunneling cutter in tunneling.

[0018] Preferably, a soil bin for storing soil is formed between the tunneling cutter and the tunneling equipment body; the locking component is arranged on the cutter head of the tunneling tool along the axis direction of the tunneling equipment body and fixed, and the cutter head is provided with a radial through hole or groove for the locking component to extend in a direction perpendicular to the axis of the tunneling equipment body; the cutter head is an arc-shaped cutter head with an arc-shaped front section.

[0019] Preferably, the auxiliary cutter power driving device is the locking component, and an installation groove for accommodating the auxiliary cutter so that it can pass through the radial through hole is provided on the side wall of the locking component facing the tunneling direction;

[0020] An auxiliary extension device connected to the auxiliary cutter is provided in the installation groove to drive the auxiliary cutter to protrude from the installation groove for auxiliary tunneling.

[0021] Preferably, the tunneling equipment body includes a tunneling cylinder and a shield partition arranged at the end wall of the tunneling cylinder along the radial direction of the tunneling equipment body;

[0022] The cutting tool is sleeved in the tunneling cylinder through a rotary bearing to rotate relative to the tunneling cylinder under the drive of the rotation drive device;

[0023] One end of the sliding drive device is fixedly connected to the shield partition, and the other end of the sliding drive device is connected to the cutting tool through the rotary bearing.

[0024] Preferably, the tunneling equipment body further includes:

[0025] A segment connecting cylinder arranged opposite to the tail end wall of the tunneling cylinder for connecting the segment of the communication tunnel;

[0026] A plurality of rectifying oil cylinders for connecting the segment connecting cylinder and the tunneling cylinder are arranged between the segment connecting cylinder and the tunneling cylinder, and all the rectifying oil cylinders are uniformly arranged along the circumferential direction of the tunneling equipment body.

[0027] Preferably, it further includes:

[0028] A screw conveyor arranged in the cavity formed by the tunneling cylinder for collecting and conveying the soil broken by the tunneling tool, and the head end of the screw conveyor protrudes from the shield partition;

[0029] A gate and slag discharging assembly connected to the screw conveyor for conveying the broken soil to the outside of the communication tunnel;

[0030] A drive assembly connected to the screw conveyor to provide power.

[0031] The communication tunnel tunneling equipment provided by the present invention includes a tunneling equipment body and a tunneling tool rotatably arranged on the tunneling equipment body, and further includes: a cutting tool with a tool body at the front end and capable of cutting the segment, the cutting tool is arranged on the tunneling equipment body; a rotation drive device, the rotation drive device is connected to the cutting tool to drive the cutting tool to rotate around the axis of the tunneling equipment body; a sliding drive device, the sliding drive device is connected to the cutting tool to drive the cutting tool to move axially along the tunneling equipment body.

[0032] Compared with the prior art, applying the communication tunnel tunneling equipment provided by the present invention has the following technical effects:

[0033] First, a cutting tool is used to cut the reinforced concrete segment, and a tunneling tool is used to tunnel the soil, so as to perform segment cutting and soil tunneling respectively. At the starting end, the tunneling tool can directly crush and break the starting-end segment without manual assistance in removing the broken segments; at the receiving end, the cutting tool is used to cut the reinforced concrete segment, and the receiving-end segment does not need to be specially made to solve the problem that the main tunnel segment at the receiving end is in an inverse arc contact with the cutter head and it is difficult to quickly break the segment. The sliding drive device drives the cutting tool to axially move relative to the tunneling equipment body, and at the same time, the rotation drive device drives the cutting tool to rotate around the axis of the tunneling equipment body to realize the cutting of the segment; while tunneling, slag is discharged synchronously, and the tunnel is formed in one go.

[0034] Second, the locking component fixes the cutting tool and the tunneling tool. Driven by the rotation drive device, power is transmitted from the tunneling tool and the locking component to the cutting tool, so that the tunneling tool and the cutting tool achieve rotational motion through the same drive device, thereby simplifying the device structure, reducing the torque and thrust requirements, and reducing the installed power.

[0035] A construction method for a connecting passage provided by the present invention includes:

[0036] Driving the tunneling tool to directly break the main tunnel segment at the starting end; the arc-shaped cutter head is in a forward arc contact with the main tunnel segment at the starting end, and the main tunnel segment can be quickly broken;

[0037] Driving the tunneling main machine to tunnel forward along the preset tunneling route, and at the same time forming a support in the excavated passage;

[0038] When the tunneling tool reaches the receiving-end segment, driving the cutting tool to extend and rotate relative to the tunneling tool, so as to expose the cutting tool relative to the tunneling tool and perform circular cutting on the receiving-end segment.

[0039] Compared with the prior art, applying the construction method for a connecting passage provided by the present invention has the following technical effects:

[0040] The cutting tool is used to cut the reinforced concrete segment, and the tunneling tool is used to tunnel the soil, so as to perform segment cutting and soil tunneling respectively. At the starting end, the tunneling tool can directly crush and break the starting-end segment without manual assistance in removing the broken segments; at the receiving end, the cutting tool is used to cut the reinforced concrete segment, and the receiving-end segment does not need to be specially made to solve the problem that the main tunnel segment at the receiving end is in an inverse arc contact with the cutter head and it is difficult to quickly break the segment. Description of the Drawings

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0042] Figure 1 Structural schematic diagram of a connection passage tunneling equipment provided by an embodiment of the present invention;

[0043] Figure 2 Structural schematic diagram of the connection passage tunneling equipment at the starting end cross-section provided by an embodiment of the present invention;

[0044] Figure 3 Structural schematic diagram of the connection passage tunneling equipment at the receiving end cross-section provided by an embodiment of the present invention;

[0045] Figure 4 Main tunnel layout structural schematic diagram of the starting end of the connection passage tunneling equipment provided by an embodiment of the present invention;

[0046] Figure 5 Tunneling schematic diagram of the connection passage tunneling equipment provided by an embodiment of the present invention.

[0047] The markings in the drawings are as follows:

[0048] Cutting head 1, cutting head spokes 2, rotating cylinder 3, sliding drive device 4, slewing bearing 5, soil bin 6, rotating drive device 7, locking assembly 8, screw conveyor 9, deviation correction oil cylinder 10, gate 11, muck discharging assembly 12, drive assembly 13, starting end reaction support system 14, propulsion system 15, starting end trolley 16, starting seal assembly 17, connection passage 18, main tunnel segment 19, receiving cylinder 20, receiving seal assembly 21, receiving end trolley 22, receiving end reaction support system 23, electrical system 24, hydraulic system 25, control system 26, connection passage tunneling equipment 27, grouting and friction reduction system 28, segment 29, segment lifting system 30, bearing panel 31, support frame 32, support oil cylinder 33;

[0049] Locking power member 801, locking member 802, locking hole 803;

[0050] Sealing brush 171, starting cylinder 172;

[0051] Oil cylinder support 151, propulsion oil cylinder 152, backing iron 153. Detailed implementation manners

[0052] An embodiment of the present invention discloses a connecting passage tunneling equipment to solve the problems that existing connecting passage construction equipment cannot directly break reinforced concrete segments and the segment breaking efficiency is low, etc.

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] Please refer to Figures 1-5 , Figure 1 which is a schematic structural diagram of a connecting passage tunneling equipment provided by an embodiment of the present invention; Figure 2 which is a schematic structural diagram of the connecting passage tunneling equipment at the starting end section provided by an embodiment of the present invention; Figure 3 which is a schematic structural diagram of the connecting passage tunneling equipment at the receiving end section provided by an embodiment of the present invention; Figure 4 which is a schematic layout structure diagram of the main tunnel at the starting end of the connecting passage provided by an embodiment of the present invention; Figure 5 which is a schematic diagram of the connecting passage tunneling equipment tunneling provided by an embodiment of the present invention.

[0055] In a specific implementation manner, the connecting passage tunneling equipment 27 provided by the present invention includes a tunneling equipment body and a tunneling cutter rotatably provided on the tunneling equipment body. Among them, the tunneling cutter is connected with a driving device to provide a power source for it, such as power equipment such as a motor and a hydraulic motor. The tunneling cutter is generally arranged at the front end of the tunneling equipment body along the tunneling direction to be able to fully contact the soil for soil fragmentation. At the same time, the rotation axis of the tunneling cutter is collinear with the axis of the tunneling equipment body to facilitate installation and positioning; preferably, the tunneling cutter is set as an arc cutter head 1 to increase the contact area with the soil. The center of the arc cutter head 1 faces the soil or the side of the tunneling equipment body, and the arc cutter head 1 can be set according to needs.

[0056] Specifically, the above device further includes a cutting cutter, a rotation driving device 7 and a sliding driving device 4. The front end of the cutting cutter is provided with a cutter body and can cut the segment. The cutting cutter is arranged on the tunneling equipment body. Preferably, the distance between the cutting cutter and the axis of the tunneling equipment body is greater than or equal to the maximum radius of the tunneling equipment body, so that after the cutting cutter cuts the segment, the tunneling cutter and the tunneling equipment body can pass through the cut, preventing the cutting cutter from having too small a cut and interfering with the tunneling cutter and damaging the tunneling cutter, and facilitating the receiving device at the receiving end to receive the tunneling equipment.

[0057] Among them, the rotation driving device 7 is connected to the cutting tool to drive the cutting tool to rotate around the axis of the tunneling equipment body; the rotation driving device 7 is preferably a combined structure of a motor and a coupling, including but not limited to the combination of a motor and a coupling, and can also be a driving device such as a motor. The cutting tool realizes a full rotation movement under the drive of the rotation driving device 7 to perform segment cutting; the sliding driving device 4 is preferably one of a cylinder or a hydraulic cylinder, and can also be a mechanism such as a gear or a chain, as long as the same technical effect can be achieved. The sliding driving device 4 is connected to the cutting tool to drive the cutting tool to move along the axial direction of the tunneling equipment body, so as to move relative to the tunneling equipment body, so that the cutting tool performs cutting operations after moving a preset distance along the axial direction, and at the same time retracts and stores after cutting the segment to prevent interference with the tunneling movement of the tunneling tool; in another embodiment, the sliding driving device 4 drives the cutting tool to move along the axial direction of the tunneling equipment body, and realizes the cutting operation of the cutting tool during the movement, and can cut segments or reinforced concrete with a certain axial length. During this process, the tunneling equipment body does not need to move along the axial direction, and the tunneling tool performs tunneling operations after the cutting tool operates, so as to effectively excavate the reinforced concrete body, realize joint operations, improve tunneling efficiency, and reduce the torque and thrust requirements of the whole machine.

[0058] Compared with the prior art, the use of the communication channel tunneling equipment 27 provided by the present invention has the following technical effects:

[0059] The cutting tool cuts the reinforced concrete segment, and the tunneling tool tunnels the soil body to perform segment cutting and soil tunneling respectively. At the starting end, the tunneling tool can directly crush and break the starting end segment without manual assistance to remove the broken segment; at the receiving end, the cutting tool cuts the reinforced concrete segment to solve the problem that the main tunnel segment 19 at the receiving end is in an anti-arc contact with the cutter head 1 and it is difficult to quickly break the segment; the sliding driving device 4 drives the cutting tool to move axially relative to the tunneling equipment body, and at the same time the rotation driving device 7 drives the cutting tool to rotate around the axis of the tunneling equipment body to realize the cutting of the segment.

[0060] In order to simplify the device structure and at the same time reduce the thrust requirement of the tunneling equipment, the rotation axis of the tunneling tool coincides with the axis of the tunneling equipment body; a single rotation driving device 7 provides power for both the cutting tool and the tunneling tool at the same time, simplifying the whole machine equipment. At the same time, when the whole tunneling equipment advances forward, the power requirement of the starting end reaction support system 14 is reduced; at the same time, the output end of the rotation driving device 7 protrudes axially from the end wall of the tunneling equipment body, and the tunneling tool is connected to the tunneling equipment body through the output end of the rotation driving device 7, so that during the rotation of the tunneling tool, the tunneling equipment body remains relatively stationary, and only the rotation driving device 7 drives the tunneling tool to rotate to realize tunneling, thereby reducing the required torque power.

[0061] In one embodiment, in order to optimize the device structure to achieve the power output of the rotation driving device 7 to the cutting tool and the tunneling tool, the tunneling tool is provided with a locking assembly 8 for connecting the tunneling tool and the cutting tool. When locked, the rotation driving device 7 can drive the cutting tool to rotate through the locking assembly 8. When the locking is released, the rotation driving device 7 can drive the tunneling tool to rotate alone, so as to further reduce the torque power required for tunneling. The locking assembly 8 can be set as a key structure, and the specific structure of the locking assembly 8 is set according to needs. In this embodiment, the tunneling tool is provided with an axially arranged through hole or a relief groove. Taking the through hole as an example, when the cutting tool moves axially, it passes through the through hole, thereby realizing the locking by the hole-shaft fit. Driven by the rotation driving device 7, the tunneling tool drives the cutting tool to rotate through the hole-shaft fit. At this time, the cutting tool is preferably sleeved on the tunneling equipment body at one end, and a plurality of tool bodies are evenly arranged in the circumferential direction at the other end of the cutting tool. This is only a preferred implementation manner here.

[0062] In another embodiment, the cutting tool is a rotary cylinder 3, which is sleeved on the tunneling equipment body and is sleeved outside the tunneling tool, that is, the cutting tool moves forward along the tunneling direction through the end wall of the tunneling tool driven by the sliding driving device 4. The front end of the rotary cylinder 3 is provided with a tool body. Preferably, the distance between the circumferential side wall of the tool body and the axis of the tunneling equipment body is greater than or equal to the distance between the tunneling equipment body and the axis of the tunneling equipment body, so that the cutting seam of the cutting tool can enable the tunneling equipment body to pass through. When the tunneling equipment reaches the receiving end, it can better cooperate with the receiving equipment at the receiving end to improve the sealing performance of the receiving end and prevent the phenomena of water inrush and sand inrush. Preferably, the diameter of the cutting seam of the cutting tool is greater than the maximum diameter of the tunneling equipment body, so as to prevent the outer wall of the tunneling equipment body from rubbing against the inner wall of the connecting passage or even getting stuck during the tunneling operation of the tunneling equipment body along the tunneling direction, which will cause obstacles to the tunneling operation of the tunneling equipment body, and at the same time prevent the increase of the propulsion pressure from easily damaging the reaction force support system 14 at the starting end.

[0063] Based on the above embodiments, the distance between the circumferential side wall of the tunneling cutter and the axis of the tunneling equipment body is less than the distance between the circumferential side wall of the cutting cutter and the axis of the tunneling equipment body. Then, the locking assembly 8 can be a key or a clamping block provided at the end wall of the tunneling cutter, and a locking groove is provided on the cutting cutter, thereby realizing the locking of the cutting cutter and the tunneling cutter, and realizing power transmission under the drive of the rotational drive device 7. The number of groups of the locking assembly 8 is multiple groups, which are evenly arranged circumferentially on the tunneling cutter; wherein, the locking assembly 8 includes a locking power member and a locking member. The fixed end of the locking power member is fixedly connected to the tunneling cutter, and the movable end of the locking power member is connected with a locking member. The locking power member drives the locking member to move in a direction close to or away from the cutting cutter, so as to realize the cooperation between the locking member and the locking hole, and perform locking / unlocking. The moving direction of the locking power member is preferably along the radial direction of the tunneling equipment body. Among them, the locking power member is preferably one of a cylinder or a hydraulic cylinder, and can also be structures such as a gear or a chain, which can be set according to needs; a locking position capable of cooperating with the locking member is provided on the cutting cutter when the cutting cutter moves axially by a preset distance. The locking position can be formed by a locking hole or a locking groove. Taking the locking hole as an example, when the cutting cutter moves forward by a preset distance along the tunneling direction under the drive of the sliding drive device 4, the locking hole is opposite to the locking member. At this time, the locking power member drives the locking member to move in a direction close to the locking hole, and the locking member extends into the locking hole to realize locking, so that the cutting cutter and the tunneling cutter are fixed and can rotate under the action of the rotational drive device 7 to realize the cutting operation; when the cutting operation of the cutting cutter is completed, the locking power member drives the locking member to move in a direction away from the locking hole, and the locking member releases the locking relationship with the locking hole. The cutting cutter can move backward along the tunneling direction under the drive of the sliding drive device 4. At this time, when the rotational drive device 7 rotates, it only drives the tunneling cutter to rotate, so as to realize the separate operation of tunneling and cutting, and reduce the torque power required for tunneling operation.

[0064] It can be understood that the above preset distance is equal to the extension length of the sliding drive device 4. The extension length of the sliding drive device 4 can be set according to factors such as the curvature radius of the segment to be cut and the axis size of the tunneling cutter. For example, when the tunneling cutter is an arc-shaped cutter head 1, the extension length of the sliding drive device 4 should be such that the radial end face of the cutting cutter is in front of the radial end face of the tunneling cutter along the tunneling direction, so that when the cutting cutter cuts the segment / reinforced concrete body, the tunneling cutter will not interfere with its cutting, and at the same time prevent the tunneling cutter from contacting the uncut segment / reinforced concrete body, causing tool deformation or damage; it can be understood that the cutting cutter in the present application can cut the receiving end segment when it is a reinforced concrete segment, or when a reinforced concrete body appears during the tunneling of the connecting passage, the cutting cutter is preferably used to cut the reinforced concrete body first, and then the tunneling cutter is used to break and tunnel the soil, so as to cooperate with the tunneling cutter to realize the tunneling operation and improve the tunneling efficiency.

[0065] It can be understood that when the distance between the circumferential side wall of the tunneling tool and the axis of the tunneling equipment body is less than the distance between the circumferential side wall of the cutting tool and the axis of the tunneling equipment body, the diameter of the hole formed by the tunneling tool during tunneling is smaller than the outer diameter of the tunneling equipment body. When the tunneling equipment body passes through the tunneling hole, it is prone to blockage or jamming, and at the same time, it will cause damage to the reaction force support system 14 at the starting end. Based on this, the device further includes an auxiliary tool and an auxiliary tool power driving device. Among them, the auxiliary tool is arranged at the end of the tunneling tool close to the cutting tool; the auxiliary tool power driving device is used to drive the auxiliary tool to extend / retract relative to the end wall of the tunneling tool. When the cutting tool needs to perform cutting operations and is fixed to the tunneling tool through the locking component 8, the auxiliary tool power driving device drives the auxiliary tool to retract. At this time, the auxiliary tool does not exceed the end wall of the tunneling tool to make way for the movement of the cutting tool. When the tunneling tool needs to perform tunneling operations, the auxiliary tool power driving device drives the auxiliary tool to extend. Preferably, when the auxiliary tool extends, the distance between the auxiliary tool and the axis of the tunneling equipment body is greater than or equal to the radius of the tunneling equipment body, and the outer diameter is the maximum radius to assist the tunneling tool in tunneling. With this setting, the diameter of the tunneling hole jointly formed by the auxiliary tool and the tunneling tool is greater than the outer diameter of the tunneling equipment body, so as to prevent damage to the reaction force support system 14 at the starting end when the tunneling hole is too small and it is difficult for the tunneling equipment body to pass through. In one embodiment, the tunneling tool is an arc-shaped cutter head 1, and the plane where the auxiliary tool is located is on the circumferential extension surface of the arc-shaped cutter head 1, so as to further improve the cooperation degree between the tools and the tunneling tool and optimize the tunneling effect.

[0066] In this specific embodiment, a soil bin for storing soil is formed between the tunneling tool and the tunneling equipment body; the tunneling tool includes a cutter head 1 sleeved with the rotation driving device; the cutter head 1 is an arc-shaped cutter head with an arc-shaped front section.

[0067] The locking component 8 is arranged and fixed on the cutter head 1 along the axis direction of the tunneling equipment body, and the cutter head 1 is provided with a radial through hole or groove for making the locking component 8 extend in a direction perpendicular to the axis of the tunneling equipment body. The locking component 8 is arranged and fixed on the cutter head 1 along the axis direction of the tunneling equipment body, and the cutter head 1 is provided with a radial through hole or groove for making the locking component extend in a direction perpendicular to the axis of the tunneling equipment body, and the movement of the locking component 8 is guided through this radial through hole or groove.

[0068] Specifically, the auxiliary tool power driving device is the locking assembly 8. An installation groove for accommodating the auxiliary tool so that it can pass through the radial through-hole is provided on the side wall of the locking assembly 8 facing the tunneling direction; an auxiliary extending device connected to the auxiliary tool and driving the auxiliary tool to protrude out of the installation groove for auxiliary tunneling is provided in the installation groove. One end of the locking power member is fixed to the shield partition 2. An installation groove is provided on the locking member. Before the locking assembly 8 passes through the radial through-hole, the auxiliary tool is arranged in the installation groove and does not exceed the circumferential side wall of the locking member, so as to facilitate the locking assembly 8 to pass through the radial through-hole. After the locking member extends out along the radial through-hole, the auxiliary extending device drives the auxiliary tool to extend. The auxiliary extending device is preferably an oil cylinder, and can also be a device such as a gear or a chain. The auxiliary tool is pushed to flip around the rotation axis in the installation groove to achieve extension. The extended auxiliary tool is parallel to the axial direction of the tunneling equipment body; after the tunneling operation is completed, the reverse operation is performed to achieve the retraction of the auxiliary tool. It can be understood that the auxiliary tool is preferably arranged at the end wall of the locking member along its own axial direction, so as to facilitate calculating the extension distance of the auxiliary tool power driving device according to the distance between the auxiliary tool and the axis of the tunneling equipment body. The distance between the end wall of the locking member and the axis of the tunneling equipment body does not exceed the distance between the auxiliary tool and the axis of the tunneling equipment body.

[0069] On the basis of the above embodiments, the tunneling equipment body includes a tunneling cylinder and a shield partition arranged at the end wall of the tunneling cylinder along the radial direction of the tunneling equipment body; the extending end of the rotation driving device 7 penetrates through the shield partition and is connected to the tunneling tool, so that when the rotation driving device 7 drives the tunneling tool to rotate, there will be no friction with the shield partition. One end of the sliding driving device 4 is fixedly connected to the shield partition, and the other end of the sliding driving device 4 is connected to the cutting tool through a slewing bearing 5. The tunneling cylinder is provided with a hollow interlayer for installing the cutting tool. Taking the rotary cylinder 3 as the cutting tool as an example for description, the rotary cylinder 3 is sleeved in the hollow interlayer of the tunneling cylinder through the slewing bearing 5. The slewing bearing 5 is connected to the end of the rotary cylinder 3 and is arranged in the hollow interlayer in clearance fit with the tunneling cylinder. A communication groove parallel to the axial direction is provided on the corresponding inner wall of the hollow interlayer, and the communication groove penetrates through the wall thickness direction of the inner wall to realize the connection between the sliding driving device 4 and the slewing bearing 5. The sliding driving device 4 drives the slewing bearing 5 to move along the communication groove to realize the extension of the cutting tool; through the slewing bearing 5, the relative movement between the cutting tool and the sliding driving device 4 is ensured when the rotation driving device 7 drives the cutting tool to rotate.

[0070] Specifically, the cutter body of the cutting tool is arranged along the axial direction of the tunneling equipment body on the outer side of the hollow interlayer. In one embodiment, the outer wall of the cutter body is in the same plane as the outer wall of the tunneling cylinder to ensure that the axial distance between the cutter body and the axis of the tunneling equipment body is equal to the outer diameter of the tunneling cylinder; alternatively, the outer wall of the cutter body protrudes from the outer wall of the tunneling cylinder so that the axial distance between the cutter body and the axis of the tunneling equipment body is greater than the outer diameter of the tunneling cylinder, so that the annular gap formed by the cutting tool facilitates the passage of the tunneling equipment body. The slip driving device 4 includes, but is not limited to, a single-rod hydraulic cylinder or a double-rod hydraulic cylinder, a motor, and a gear combination mechanism, all of which are within the protection scope of the present invention.

[0071] To control the tunneling direction, the tunneling equipment body further includes:

[0072] A segment connecting cylinder disposed opposite to the tail end wall of the tunneling cylinder for connecting the segment of the connection passage;

[0073] A plurality of rectifying cylinders 10 for connecting the segment connecting cylinder and the tunneling cylinder are provided between the segment connecting cylinder and the tunneling cylinder, and all the rectifying cylinders 10 are uniformly arranged along the circumferential direction of the tunneling equipment body.

[0074] It can be understood that the segment connecting cylinder and the tunneling cylinder are only connected by the rectifying cylinders 10, the outer diameter of the segment connecting cylinder is the same as the outer diameter of the tail end wall of the tunneling equipment cylinder, and both ends of the rectifying cylinder 10 are respectively hinged to the segment connecting cylinder and the tunneling cylinder. The tunneling direction is controlled by controlling the extension amount of each rectifying cylinder 10. All the rectifying cylinders 10 are connected to the control system 26 on the trolley in the main tunnel to monitor the tunneling direction in real time and control the rectifying cylinder 10 to perform rectification.

[0075] In this specific embodiment, it further includes:

[0076] A screw conveyor 9 disposed in the cavity formed by the tunneling cylinder for collecting and conveying the soil broken by the tunneling cutter, a gate 11 and a slag discharging assembly 12 connected to the screw conveyor 9 for conveying the broken soil to the outside of the connection passage; a driving assembly 13 connected to the screw conveyor 9 to provide power.

[0077] The head end of the screw conveyor 9 protrudes from the shield partition for collecting the soil in the soil bin. The head end of the screw conveyor 9 is arranged at the bottom of the shield partition, and the screw conveyor 9 is arranged obliquely upward from the head to the tail. The slag is conveyed by relying on the balance of the pressure in the soil bin 6 and the water and soil pressure and the rotation of the bolt shaft and the blades. The driving assembly 13 is connected to the shell of the bolt conveyor to provide power for the bolt conveyor. The slag discharging assembly 12 is connected to the gate 11 and is equipped with a plunger pump or an extrusion pump to directly discharge the slag to the main tunnel through the slag discharging assembly 12 to achieve rapid and continuous slag discharging. In other embodiments, a slag truck or a belt conveyor can also be used for slag discharging, all of which are within the protection scope of the present invention.

[0078] In a specific embodiment, the connecting passage tunneling system includes a connecting passage tunneling equipment 27, a muck discharging system, a guiding and deviation correcting system, a reaction force support system arranged on the starting-end trolley 16 and the receiving-end trolley 22, a propulsion device arranged on the starting-end trolley 16, a sealing assembly arranged at the starting end and the receiving end, each section of trolley arranged in the main tunnel at the starting end and the rear support system thereon; the connecting passage tunneling equipment 27 adopts a retractable structure of a rotary cylinder 3. At the starting end, a special-shaped segment is directly broken and discharged by an arc cutter head 1. During the tunneling process, the arc cutter head 1 is used for rapid excavation. At the receiving end, the rotary cylinder 3 is used for full-rotation cutting of the reinforced concrete segment.

[0079] The starting-end reaction force support system 14 and the receiving-end reaction force support system 23 are respectively arranged on the corresponding main tunnel trolleys at the starting end and the receiving end, and are tightened on the wall surface of the main tunnel segment 19 by unfolding the support frame 32, which not only provides the reaction force support for equipment jacking, but also plays a supporting role for the main tunnel. Structures such as a support oil cylinder 33 and a bearing panel 31 matched with the inner wall surface of the main tunnel segment 19 are arranged on the support frame 32. The propulsion device includes an oil cylinder support, a propulsion oil cylinder and a jacking iron. The oil cylinder frame is installed on the corresponding trolley in the main tunnel at the starting end of the connecting passage, with its back against the reaction force support system; the oil cylinder jacks on the jacking iron to push the segment 29; the jacking iron is a high-strength carbon steel product with the same size as the segment 29 of the connecting passage 18.

[0080] The sealing assembly is arranged on the main tunnel segments 19 at the starting end and the receiving end. The starting-end sealing assembly 17 includes a starting cylinder fixed on the main tunnel segment 19 at the end of the connecting passage 18 and a sealing brush arranged on the inner wall of the starting cylinder. The starting cylinder is installed on the main tunnel wall at the starting side, with an outer diameter larger than the diameter of the connecting passage 18 formed after tunneling and an inner diameter larger than the outer diameters of the shield and the segment 29. The sealing brush avoids phenomena such as water gushing and sand gushing during the tunneling process and ensures the sealing effect of the rotary cylinder 3 during the tunneling process. The receiving-end sealing assembly 21 can be installed according to the tunneling direction of the connecting passage construction equipment and various tunneling parameters and dimensions to smoothly complete the receiving work.

[0081] The rear supporting system includes an electrical system 24, a hydraulic system 25, a control system 26, a grouting and friction reduction system 28, and a segment hoisting system 30 disposed on the trolley in the main tunnel at the starting end of the connection passage; the starting-end trolley 16 adopts a modular design, and a connection structure is provided between the front and rear trolleys. Each section of the trolley and its auxiliary equipment can be assembled externally and then towed by a towing device to the excavation position of the connection passage 18 for direct tunneling, avoiding in-tunnel assembly and increasing the tunneling efficiency. The segment 29 is in the form of half segments or a whole ring. The whole-ring segment does not need to be spliced, saving the segment installation time; the half-segment is convenient for transportation. The upper and lower segmented segments have different angles, and the specific angle values are determined according to the actual construction situation. The sum of the upper and lower segmented angles is 360°. The segment 29 is equipped with a sealing device to avoid water leakage and sand leakage, and connection bolts are also provided in the tunneling direction and the circumferential direction.

[0082] A construction method for a connection passage provided by the present invention includes:

[0083] a: Driving the tunneling cutter to directly break the segment of the main tunnel at the starting end; the arc-shaped cutter head is in arc contact with the segment of the main tunnel at the starting end, and the segment of the main tunnel can be quickly broken.

[0084] b: Driving the tunneling cutter to tunnel forward along a preset tunneling route, and at the same time forming a support in the excavated passage.

[0085] c: When the tunneling cutter reaches the receiving-end segment, driving the cutting cutter to rotate relative to the soil mass and extend forward, so that the cutting cutter is exposed relative to the tunneling cutter, and performing a circular cut on the receiving-end segment. In one embodiment, both the cutting cutter and the tunneling cutter are fixedly arranged on the tunneling equipment. When the cutting cutter extends forward relative to the soil mass, it also extends forward relative to the tunneling cutter and the tunneling equipment. The cutting cutter is preferably a cutting cylinder. When in use, only the cutting cutter extends, and the tunneling cutter and the tunneling equipment remain relatively fixed, which is convenient for setting, and at the same time maintains the overall stiffness of the tunneling equipment and improves the stability of the device.

[0086] Compared with the prior art, applying the construction method for a connection passage provided by the present invention has the following technical effects:

[0087] By using the cutting cutter to cut the reinforced concrete segment and the tunneling cutter to tunnel the soil mass, the segment cutting and soil tunneling are respectively carried out. At the starting end, the tunneling cutter can directly crush and break the starting-end segment without manual assistance to remove the broken segment; at the receiving end, the cutting cutter is used to cut the reinforced concrete segment, and the receiving-end segment does not need to be specially made to solve the problem that it is difficult to quickly break the segment due to the reverse arc contact between the receiving-end main tunnel segment and the cutter head.

[0088] The specific tunneling process includes:

[0089] Step 1: Reinforcement around the main tunnel construction location. Reinforce the main tunnel segments 19 at the starting and receiving ends of the communication channel 18 and their surroundings to meet the propulsion force transmission requirements and prevent damage to the main tunnel segments 19;

[0090] Step 2: Assemble and debug the equipment as a whole. Install and place the starting sealing assembly 17, propulsion system 15, reaction force support system, and main engine of the communication channel construction equipment on the corresponding trolley at the starting end face of the communication channel, and install and place the auxiliary equipment on other trolleys respectively;

[0091] Step three, the cutter head 1 starts to break the pipe segments and excavate along the set route (according to the design direction, it can be at any angle to the tunnel). The starting end pipe segment (needs to be specially made) is broken by the arc-shaped cutter head 1, and the slag is discharged synchronously, avoiding the process of manual crushing of the pipe segments. The cutter head 1 and the rotating cylinder 3 share a main drive. During excavation, the cutter head 1 is used to cut the soil and discharge the slag synchronously. The slag is discharged in the form of spiral pumping or belt conveyor. The cut soil falls into the soil bin 6 and is transported to the tail by the screw conveyor 9, and the slag is discharged by the slag discharge component 12;

[0092] Step 4: Assemble and push in the pipe segments 29. After completing one stroke of advancement, a new pipe segment 29 is assembled at the starting point of the communication channel through the pipe segment hoisting system, and the new pipe segment is pushed in by the advancement system 15 to continue excavation, and the above advancement process is repeated until the receiving end of the communication channel 18 is reached;

[0093] Step 5: Install the tunnel door sealing assembly and receiving tube 20 at the receiving end. When the construction equipment is about to be penetrated, the receiving end trolley 22 is towed to the receiving position corresponding to the communication channel 18 by the traction device to complete the fixation; after the receiving end sealing assembly is installed and fixed to meet the construction equipment receiving requirements, continue to push the communication channel 18 construction equipment and pipe segment 29;

[0094] Step 6: The rotary cylinder 3 extends to cut the receiving end segment. When the receiving end segment is reached, the telescopic cylinder retracts, the rotary cylinder 3 extends, the locking assembly connects the cutter head 1 and the rotary cylinder 3 together, and the rotating drive device 7 drives the rotary cylinder 3 integrated with the cutter head 1 to cut the reinforced concrete segment; after cutting, the main machine receives and transports it out of the main tunnel according to the expected plan.

[0095] Step 7: Tunnel forming and post-processing.

[0096] During the excavation of the communication channel construction equipment, the main machine posture is measured in real time by the theodolite and laser target and fed back to the operator. The equipment posture is adjusted by controlling the deviation correction cylinder 10, and the total station prism group or other measurement technologies can also be used.

[0097] The above-mentioned device creatively uses a telescopic cylinder structure to meet the operation switching between full-rotation pipe segment breaking and cutter head 1 excavation; the receiving end uses a full-rotation method to cut the pipe segments (reinforced concrete pipe segments, no special manufacturing required). Compared with the existing pipe jacking / shield machine for connecting channels that uses an arc-shaped cutter head 1 and has an anti-arc contact between the main tunnel pipe segments 19 and the cutter head 1 at the receiving end, making it difficult to quickly break the pipe segments, the full-rotation method (the rotating cylinder 3 extends out) can quickly cut and break the pipe segments at the receiving section; the starting end uses an arc-shaped cutter head 1 to break the pipe segments, avoiding the steps of manual pipe segment breaking required by the full-rotation type and eliminating the need to set up a sealing gate 11, greatly improving the tunneling efficiency; during tunneling, the cutter head 1 is used for rapid excavation and slag discharge is carried out simultaneously, with high efficiency; the rotation drive device 7 is arranged at the head of the tunneling equipment body, and the rotating cylinder 3 and the cutter head 1 share the same set of drive; it has lower torque and thrust requirements, reduces the installed power, and is more energy-efficient and economical; only the front shell rotates and the rear pipe joints do not rotate, reducing the power demand and having a lower installed power; at the same time, concrete pipe segments can be used as the pipe joint support, reducing the construction support cost and equipment cost.

[0098] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising the element.

Claims

1. A connection passage tunneling equipment, comprising a tunneling equipment body and tunneling cutters rotatably arranged on the tunneling equipment body, characterized in that, It further includes: A cutting tool with a tool body at the front end and capable of cutting segments, and the cutting tool is arranged on the tunneling equipment body; A rotation driving device arranged on the tunneling equipment body, and the rotation driving device is connected to the cutting tool to drive the cutting tool to rotate around the axis of the tunneling equipment body; A sliding driving device arranged on the tunneling equipment body, and the sliding driving device is connected to the cutting tool to drive the cutting tool to move axially along the tunneling equipment body; The tunneling tool is provided with a locking component for connecting the cutting tool, and when locked, the rotation driving device can drive the cutting tool to rotate through the locking component; The locking component is arranged and fixed on the cutter head of the tunneling tool along the axis direction of the tunneling equipment body, and the cutter head is provided with a radial through hole for enabling the locking component to extend out in a direction perpendicular to the axis of the tunneling equipment body; The locking component includes: A locking power member with a fixed end fixedly connected to the tunneling tool, and a locking member is connected to the movable end of the locking power member, and the locking power member drives the locking member to move towards or away from the cutting tool; The cutting tool is provided with a locking position that can cooperate with the locking member when the cutting tool moves axially by a preset distance; It further includes: An auxiliary tool arranged at the end of the tunneling tool close to the cutting tool; An auxiliary tool power driving device for driving the auxiliary tool to extend / retract relative to the end wall of the tunneling tool; The auxiliary tool power driving device is the locking component, and an installation groove for accommodating the auxiliary tool so that it can pass through the radial through hole is arranged on the side wall of the locking component facing the tunneling direction; An auxiliary extending device connected to the auxiliary tool in the installation groove and driving the auxiliary tool to protrude from the installation groove for auxiliary tunneling; The installation groove is arranged on the locking member.

2. The connecting passage tunneling equipment according to claim 1, wherein, The rotation axis of the tunneling tool coincides with the axis of the tunneling equipment body; The output end of the rotation driving device protrudes axially from the end wall of the tunneling equipment body, and the tunneling tool is connected to the tunneling equipment body through the output end of the rotation driving device to rotate under the drive of the rotation driving device.

3. The connecting passage tunneling equipment according to claim 2, characterized in that, When the auxiliary tool extends, the distance between the auxiliary tool and the axis of the tunneling equipment body is greater than or equal to the radius of the tunneling equipment body to assist the tunneling tool in tunneling.

4. The connecting passage tunneling equipment according to claim 3, characterized in that, A soil bin for storing soil is formed between the tunneling tool and the tunneling equipment body; The cutter head is an arc-shaped cutter head with an arc-shaped front section.

5. The connecting passage tunneling equipment according to any one of claims 1-4, characterized in that, The tunneling equipment body includes a tunneling cylinder and a shield partition arranged radially at the end wall of the tunneling cylinder along the tunneling equipment body; The cutting tool is sleeved in the tunneling cylinder through a slewing bearing to rotate relative to the tunneling cylinder under the drive of the rotation driving device; One end of the sliding driving device is fixedly connected to the shield partition, and the other end of the sliding driving device is connected to the cutting tool through the slewing bearing.

6. The connecting passage driving equipment according to claim 5, wherein, The tunneling equipment body further includes: A segment connecting cylinder that is disposed opposite to the tail end wall of the tunneling cylinder and is used to connect the segment of the connecting passage; A plurality of rectifying cylinders for connecting the segment connecting cylinder and the tunneling cylinder are provided between the segment connecting cylinder and the tunneling cylinder, and all the rectifying cylinders are uniformly arranged along the circumferential direction of the tunneling equipment body.

7. The connecting passage driving equipment according to claim 6, characterized in that, It further includes: A screw conveyor disposed in the cavity formed by the tunneling cylinder and used to collect and convey the soil broken by the tunneling cutter, and the head end of the screw conveyor protrudes from the shield partition; A gate and a slag discharging assembly connected to the screw conveyor and used to convey the broken soil to the outside of the connecting passage; A driving assembly connected to the screw conveyor to provide power.

8. A construction method for a connection passage, characterized in that, Constructing using the connecting passage tunneling equipment according to any one of claims 1-7; the method includes: Driving the tunneling cutter to directly break the segment of the main tunnel at the starting end; Driving the tunneling main machine to advance forward along the preset tunneling route, and at the same time forming a support in the excavated passage; When the tunneling cutter reaches the receiving end segment, driving the cutting cutter to extend and rotate relative to the tunneling cutter so as to expose the cutting cutter relative to the tunneling cutter and perform circular cutting on the receiving end segment.

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