Tunnel escape pipeline trolley and method

Abstract

The invention relates to the field of tunnel construction equipment, and discloses a tunnel escape pipeline trolley and method, and the tunnel escape pipeline trolley comprises a chassis system which is used for providing the bearing, walking and steering functions of the trolley; the upper top frame comprises an upper top frame framework, the upper top frame framework is connected with a lifting device through a pin shaft, and the lifting device is connected with the chassis system; the truss mechanism comprises a spliced truss frame and an escape pipeline fixed on the truss frame; the lifting device comprises a scissor mechanism and a lifting oil cylinder, and the lifting oil cylinder is driven by a hydraulic system and used for adjusting the height of the upper top frame and the height of the truss mechanism; a hydraulic system; and an electrical system. The chassis system is provided with the driving steering wheels and the auxiliary supporting wheels, the driving steering wheels can achieve linear walking, transverse movement and 360-degree steering, the trolley can rapidly move from one side to the other side of a tunnel through operation of a remote controller, and the efficiency during tunnel construction excavation is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction equipment, and in particular to a tunnel escape pipeline trolley and method. Background Art

[0002] During tunnel construction, escape pipes serve as an important channel for emergency evacuation of construction workers and play a key role in the event of a safety accident. At the same time, escape pipes also provide a convenient channel for rescue workers to quickly enter the accident site. Therefore, the layout and protection of escape pipes are directly related to the safety and efficiency of tunnel construction. However, the tunnel construction environment is complex, the space is narrow, and the working conditions are changeable, which puts high demands on the installation, adjustment, and protection of escape pipes. In order to ensure construction safety, escape pipes need to have the ability to be flexibly arranged, reliably protected, and quickly adjusted to adapt to the changing needs of tunnel construction.

[0003] In the prior art, escape ducts are usually arranged in a fixed installation or simple bracket. This type of system has a simple structure, and usually the escape duct is directly fixed on the tunnel floor or wall, and the basic load-bearing function is provided by the support frame. Some improvement schemes also adopt a movable trolley form, but most of them are fixed structures and lack dynamic adjustment and flexible protection functions. This type of escape duct arrangement is suitable for general construction environments, but in complex working conditions or tunnel face blasting operations, it is often difficult to effectively protect the escape duct from damage by flying rocks and impact forces. In addition, these systems have poor adaptability under different construction conditions, and require a lot of manual operation when adjusting or moving, which is inefficient.

[0004] The escape pipe arrangement method of the prior art has the following problems: the position cannot be dynamically adjusted during the tunnel face blasting operation, and the escape pipe is easily damaged by flying rocks or impact force, resulting in pipe damage or failure. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a tunnel escape pipe trolley and method, which solves the problem that the prior art cannot dynamically adjust the position during tunnel face blasting operations, and the escape pipe is easily damaged by flying rocks or impact force, resulting in pipe damage or failure.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A tunnel escape pipeline trolley, comprising:

[0007] The chassis system is used to provide the trolley with load-bearing, traveling and steering functions;

[0008] An upper frame, comprising an upper frame frame, wherein the upper frame frame is connected to a lifting device via a pin shaft, and the lifting device is connected to a chassis system;

[0009] A truss mechanism, comprising a spliced ​​truss frame and an escape duct fixed on the truss frame, wherein the truss mechanism is limitedly assembled in the upper frame through a guide wheel device, and meshes with the gear of the telescopic device through a rack to achieve reciprocating motion along the length direction of the upper frame;

[0010] A lifting device, comprising a scissor mechanism and a lifting cylinder, wherein the lifting cylinder is driven by a hydraulic system and is used to adjust the height of the upper frame and the truss mechanism;

[0011] A hydraulic system, including a hydraulic oil tank, a hydraulic pump and a hydraulic multi-way reversing valve, provides power for the lifting device;

[0012] The electrical system is used to control the operation of the chassis system, truss mechanism and lifting device.

[0013] Preferably, the chassis system includes a driving steering wheel and an auxiliary support wheel, wherein the driving steering wheel realizes straight-line walking through a driving motor and realizes lateral movement and 360-degree steering through a steering motor.

[0014] Preferably, the chassis system includes a water tank system, which serves as both a counterweight device for the trolley and a water supply source, and is connected to a motor water pump and an automatic hose reel for use in fire fighting during cloth hanging operations.

[0015] Preferably, the upper frame includes an upper frame frame, the upper frame frame is connected to the scissors mechanism of the lifting device through a pin shaft, and a guide wheel device is arranged on the upper frame frame, and the truss mechanism is limitedly assembled in the upper frame frame by the guide wheel device.

[0016] Preferably, the truss mechanism is driven by the telescopic device, which includes a driving motor, a sprocket one connected to the driving motor, a transmission structure connecting sprocket one and sprocket two via a chain, and a gear coaxial with sprocket two, and the gear engages with a rack on the truss mechanism to realize reciprocating movement of the truss mechanism.

[0017] Preferably, the lifting device includes a scissors mechanism and a lifting cylinder, and the lifting cylinder is driven by a hydraulic multi-way reversing valve in the hydraulic system to adjust the height of the truss mechanism.

[0018] Preferably, the truss mechanism comprises a spliced ​​truss frame, the truss frame is modularly spliced ​​by connecting pieces, and the escape duct is made of high-strength material and fixed to the truss frame.

[0019] Preferably, during blasting operation at the tunnel face, the truss mechanism is driven to retract to the filling surface end by the telescopic device to avoid damage to the escape pipe by flying rocks, and is driven to return to the working position by the telescopic device after the blasting is completed.

[0020] Preferably, the electrical system includes an electrical control box, a remote controller and control circuits connected to the chassis system, the lifting device and the truss mechanism, and the remote controller is used to remotely control the movement of the trolley, the extension and retraction of the truss mechanism and the height adjustment of the lifting device.

[0021] The present invention also provides a method for using a tunnel escape pipeline trolley, comprising the following steps:

[0022] Step 1: Control the steering wheel through the electrical system to move the trolley to the tunnel construction position;

[0023] Step 2: adjusting the height of the truss mechanism by a lifting device according to the height distance between the tunnel face and the filling surface;

[0024] Step 3: During blasting operation at the tunnel face, the truss mechanism is retracted to the end of the filling face through the telescopic device to avoid the influence of blasting broken rocks;

[0025] Step 4: After the blasting is completed, the truss mechanism is restored to the working position through the telescopic device;

[0026] Step 5: When it is necessary to move to the other side of the tunnel, the electrical system controls the steering wheel to make a 90° lateral turn and move the trolley to the target position.

[0027] The present invention provides a tunnel escape pipeline trolley and method, which has the following beneficial effects:

[0028] 1. The present invention is equipped with a driving steering wheel and an auxiliary support wheel through the chassis system. The driving steering wheel can realize straight-line walking, lateral movement and 360° steering, supporting the precise movement and flexible steering of the trolley in the narrow space of the tunnel. Through remote control operation, the trolley can quickly move from one side to the other side of the tunnel, greatly improving the efficiency of tunnel construction and excavation.

[0029] 2. The lifting device of the present invention is composed of a scissor mechanism and a lifting cylinder, which is driven by a hydraulic system. It can quickly adjust the height position of the truss mechanism and the escape pipe according to the height distance between the guide section and the filling surface on the tunnel face, ensuring that the escape pipe will not affect the normal tunnel construction operations, while adapting to the requirements of different construction conditions.

[0030] 4. The present invention adopts a spliced ​​truss frame through the truss mechanism, and the overall rigidity and strength are significantly improved. The escape pipe is fixed on the truss frame, which can effectively withstand the pressure or impact that may be generated during the tunnel construction process. At the same time, during the blasting operation of the tunnel face, the truss mechanism can be driven to retract to the filling surface end through the telescopic device to avoid damage to the escape pipe by flying rocks. After the blasting is completed, it can be quickly restored to the working position, further ensuring the construction safety and the integrity of the escape pipe.

[0031] 5. The truss mechanism of the present invention is a modular splicing structure, which can be quickly disassembled and assembled through connecting parts. The length of the truss frame can be flexibly adjusted according to actual construction needs. At the same time, the escape pipe is fixed on the truss frame, which is convenient for transportation and installation. This modular design greatly shortens the time for pipeline layout and reduces the labor intensity of construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the present invention;

[0033] Figure 2 It is a partial front view of the present invention;

[0034] Figure 3 It is a partial enlarged view of the telescopic device of the present invention;

[0035] Figure 4 It is a partial enlarged view of the truss mechanism of the present invention.

[0036] Among them, 1. chassis system; 1-1. driving steering wheel; 1-2. auxiliary support wheel; 1-3. water tank system; 1-4. motor water pump; 1-5. automatic hose reel; 2. upper frame; 2-1. upper frame frame; 2-2. guide wheel device; 3. electrical system; 4. hydraulic system; 4-1. hydraulic oil tank; 4-2. motor; 4-3. hydraulic pump; 4-4. hydraulic multi-way reversing valve; 5. telescopic device; 5-1. driving motor; 5-2. sprocket one; 5-3. chain; 5-4. shaft; 5-5. sprocket two; 5-6. gear; 6. lifting device; 6-1. scissors mechanism; 6-2. lifting cylinder; 7. truss mechanism; 7-1. frame; 7-2. escape pipe; 7-3. rack. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example:

[0039] Please see attached Figure 1 -Attached Figure 4 The embodiment of the present invention provides a tunnel escape pipeline trolley, comprising:

[0040] The chassis system 1 is used to provide the trolley with load-bearing, walking and steering functions;

[0041] The upper frame 2 includes an upper frame frame 2-1, the upper frame frame 2-1 is connected to the lifting device 6 through a pin shaft, and the lifting device 6 is connected to the chassis system 1;

[0042] The truss mechanism 7 includes a spliced ​​truss frame 7-1 and an escape duct 7-2 fixed on the truss frame 7-1. The truss mechanism 7 is limitedly assembled in the upper frame 2-1 through the guide wheel device 2-2, and is meshed with the gear 5-6 of the telescopic device 5 through the rack 7-3 to achieve reciprocating motion along the length direction of the upper frame 2-1.

[0043] The lifting device 6 includes a scissor mechanism 6-1 and a lifting cylinder 6-2. The lifting cylinder 6-2 is driven by the hydraulic system 4 and is used to adjust the height of the upper frame 2 and the truss mechanism 7;

[0044] The hydraulic system 4 includes a hydraulic oil tank 4-1, a hydraulic pump 4-3 and a hydraulic multi-way reversing valve 4-4, and provides power for the lifting device 6;

[0045] The electrical system 3 is used to control the operation of the chassis system 1 , the truss mechanism 7 and the lifting device 6 .

[0046] In one embodiment, the chassis system 1 is composed of a driving steering wheel 1-1, an auxiliary support wheel 1-2, a water tank system 1-3, a motor water pump 1-4 and an automatic hose reel 1-5.

[0047] The driving steering wheel 1-1 is driven by a motor to realize the straight-line walking, lateral movement and 360° in-situ steering functions of the trolley, and the position of the trolley can be flexibly adjusted under the control of the remote control.

[0048] The auxiliary support wheels 1-2 provide stable load-bearing support to ensure the smooth operation of the equipment on complex ground.

[0049] After the water tank system 1-3 is filled with water, it serves as the counterweight of the trolley and provides water for the arch maintenance and cloth hanging operations. The water spray device is connected through the motor water pump 1-4 and the automatic hose reel 1-5 to deal with emergencies such as fire.

[0050] The upper frame 2-1 is connected to the scissor mechanism 6-1 of the lifting device 6 through a pin shaft, ensuring that the upper frame 2 can be adjusted in height with the action of the lifting device 6. At the same time, the truss mechanism 7 is limitedly assembled in the upper frame 2-1 through the guide wheel device 2-2, ensuring that it can achieve smooth reciprocating motion along the length direction of the upper frame 2-1 under the drive of the telescopic device 5;

[0051] The truss mechanism 7 is composed of a spliced ​​truss frame 7-1 and an escape duct 7-2 fixed thereon. Through the transmission cooperation of the drive motor 5-1, sprocket 1 5-2, chain 5-3, sprocket 2 5-5 and gear 5-6 in the telescopic device 5, the gear 5-6 meshes with the rack 7-3 of the truss mechanism 7, driving the truss mechanism 7 to smoothly telescope along the upper frame 2-1, thereby realizing the rapid arrangement or retraction of the escape duct;

[0052] The lifting device 6 is composed of a scissor mechanism 6-1 and a lifting cylinder 6-2. The lifting cylinder 6-2 is driven by a hydraulic pump 4-3 of a hydraulic system 4. The hydraulic multi-way reversing valve 4-4 controls the extension and retraction of the cylinder, thereby driving the lifting and lowering of the scissor mechanism 6-1 to achieve overall height adjustment of the upper frame 2 and the truss mechanism 7 to meet the requirements of different tunnel construction conditions.

[0053] The electrical system 3 remotely controls the chassis system 1, the telescopic device 5 and the lifting device 6 through the electrical control box and the remote controller. The operator can realize the precise movement of the trolley, the telescopic arrangement of the truss mechanism and the rapid adjustment of the height of the escape pipe, thereby improving the convenience and safety of equipment operation.

[0054] The chassis system 1 includes a driving steering wheel 1-1 and an auxiliary support wheel 1-2. The driving steering wheel 1-1 realizes straight-line walking through a driving motor, and realizes lateral movement and 360° steering through a steering motor.

[0055] The chassis system 1 includes a water tank system 1-3, which serves as both a counterweight device for the trolley and a water supply source, and is connected to a motor water pump 1-4 and an automatic hose reel 1-5 for fire fighting during cloth hanging operations.

[0056] In one embodiment, the driving steering wheel 1-1 of the chassis system 1 generates walking power through the driving motor, so that the trolley can move smoothly in a straight line; at the same time, the steering motor controls the rotation direction of the driving steering wheel 1-1 to realize the lateral movement of the equipment and the 360° in-situ steering function. The auxiliary support wheel 1-2 further provides stable support for the operation of the equipment to prevent the equipment from tilting or becoming unstable under high load or complex terrain. Through the remote control function of the electrical system 3, the operator can flexibly adjust the direction of travel and the mode of movement of the equipment, so that the equipment can efficiently complete the layout adjustment tasks in the tunnel; the water tank system 1-3 provides a counterweight function for the chassis system 1 through the weight of the water storage, so that the center of gravity of the equipment is kept in a reasonable position, and the stability of the equipment can be maintained whether it is in a moving or stationary working state. Especially during the operation of the equipment, the weight balance of the water tank system 1-3 can effectively offset the center of gravity deviation that may be caused by other components on the trolley, such as the truss mechanism or the escape pipe, thereby reducing the vibration and tilting phenomenon during the operation of the equipment. This design is particularly suitable for construction conditions with uneven terrain in tunnels, ensuring that the equipment can operate safely; the water tank system 1-3 is connected to the motor water pump 1-4 through a standardized interface. When water supply is needed, the motor water pump 1-4 draws water from the water tank system 1-3 and transports it to the automatic hose reel 1-5 through a high-pressure pipeline. The automatic hose reel 1-5 can quickly pull out the water pipe when needed to achieve the high-pressure water supply function. This design can not only provide a stable water source for the invert curing operation, but also quickly activate the fire extinguishing function when a fire occurs during the hanging cloth operation. Through high-pressure water jets, the fire extinguishing device can extinguish the fire source in the shortest time, thereby avoiding the spread of fire and ensuring construction safety; the chassis system 1, as the core supporting structure of the entire equipment, works in coordination with other functional modules; when the equipment moves, the power of the driving steering wheel 1-1 and the stabilizing effect of the auxiliary support wheel 1-2 ensure that the equipment can flexibly adjust its position while maintaining smooth operation; the counterweight and balancing functions of the water tank system 1-3 provide center of gravity support for the entire equipment, and do not interfere with the movement of the upper frame and truss mechanism; in emergency situations, the water tank system 1-3 cooperates with the motor water pump 1-4 and the automatic hose reel 1-5 to quickly complete the fire extinguishing task, reflecting the comprehensive response capability of the equipment in emergencies.

[0057] The upper frame 2 includes an upper frame frame 2-1, which is connected to the scissor mechanism 6-1 of the lifting device 6 through a pin shaft, and a guide wheel device 2-2 is arranged on the upper frame frame 2-1. The truss mechanism 7 is limitedly assembled in the upper frame frame 2-1 through the guide wheel device 2-2.

[0058] In one embodiment, the upper frame 2-1 is connected to the scissor mechanism 6-1 of the lifting device 6 through a pin shaft, and the pin shaft provides high-strength support and stability during the connection process. The lifting device 6 drives the upper frame 2-1 to rise and fall through the linkage drive of the scissor mechanism 6-1 and the lifting cylinder 6-2, thereby realizing flexible adjustment of the equipment within different height ranges. The design of the pin shaft ensures the stability of the upper frame 2-1 during the lifting process, avoiding structural instability caused by equipment shaking or uneven load; the guide wheel device 2-2 on the upper frame 2-1 provides precise guidance and limiting for the telescopic movement of the truss mechanism 7. The truss mechanism 7 is assembled in the upper frame 2-1 through the guide wheel device 2-2. The guide wheel device 2-2 provides guidance in a straight line direction when the truss mechanism 7 is extended and retracted, preventing the truss mechanism 7 from deflecting or shaking during movement. This limiting function of the guide wheel device ensures that the truss mechanism 7 and the telescopic device 5 cooperate to run more smoothly, thereby ensuring the accuracy and reliability of the escape duct during the arrangement and adjustment process; the truss mechanism 7 is assembled in the upper frame frame 2-1 through the limiting function of the guide wheel device 2-2, and the rolling friction characteristics of the guide wheel device are used to reduce the resistance of the truss mechanism 7 during the telescopic process. At the same time, the truss mechanism 7 cooperates with the telescopic device 5, and the gear 5-6 of the telescopic device 5 is driven by the meshing of the rack 7-3 and the gear 5-6 of the telescopic device 5 to complete the reciprocating motion of the truss mechanism 7 along the length direction of the upper frame frame 2-1. The guide wheel device 2-2 not only ensures the stability of the movement, but also disperses the load generated by the truss mechanism 7 during operation, reduces the force on the upper frame frame 2-1, and extends the service life of the equipment; when the equipment is running, the operator first adjusts the lifting device 6 to drive the upper frame frame 2-1 to a suitable height through the control of the electrical system 3. Subsequently, the truss mechanism 7 is limited in the upper frame 2-1 by the guide wheel device 2-2, ensuring that the truss mechanism 7 can be smoothly extended and retracted along the length direction of the upper frame 2-1 under the drive of the telescopic device 5. At the same time, the rolling design of the guide wheel device 2-2 effectively reduces the friction between the truss mechanism 7 and the upper frame 2-1, thereby improving the efficiency and accuracy of the overall equipment operation.

[0059] The truss mechanism 7 is driven by the telescopic device 5, which includes a driving motor 5-1, a sprocket 1 5-2 connected to the driving motor 5-1, a transmission structure connecting the sprocket 1 5-2 and the sprocket 2 5-5 through a chain 5-3, and a gear 5-6 coaxial with the sprocket 2 5-5. The gear 5-6 engages with the rack 7-3 on the truss mechanism 7 to realize the reciprocating movement of the truss mechanism 7.

[0060] In one embodiment, the telescopic device 5 is powered by a driving motor 5-1. The rotational power output by the driving motor 5-1 is first transmitted to the sprocket 1 5-2. The sprocket 1 5-2 is connected to the sprocket 2 5-5 through the chain 5-3 to achieve continuous power transmission. The sprocket 2 5-5 is coaxially connected to the gear 5-6. The rotation of the sprocket drives the gear 5-6 to rotate synchronously, and further transmits the rotational power to the rack 7-3 on the truss mechanism 7. The engagement of the gear 5-6 and the rack 7-3 converts the rotational motion into linear motion, thereby driving the truss mechanism 7 to reciprocate along the length direction of the upper frame 2-1; during the power transmission process, the transmission between the chain 5-3 and the sprockets 5-2 and 5-5 realizes multi-point power distribution. The tensioning design of the chain ensures the stability of power transmission and has a certain buffering effect. It can absorb the vibration caused by external impact or load changes during operation. This vibration reduction function makes the operation of the truss mechanism 7 more stable, avoiding equipment loss or unstable operation caused by vibration; the meshing relationship between the gear 5-6 and the rack 7-3 is the core of the reciprocating motion of the truss mechanism 7. The gear 5-6 converts the rotational power transmitted by the chain into the linear motion of the rack 7-3. The gear tooth design and the meshing structure of the rack ensure the accuracy of motion transmission. Through the control of the drive motor 5-1 by the electrical system 3, the movement rate and stroke length of the gear and rack can be accurately adjusted, thereby realizing the rapid deployment or recovery of the truss mechanism 7.

[0061] The lifting device 6 includes a scissor mechanism 6 - 1 and a lifting cylinder 6 - 2 . The lifting cylinder 6 - 2 is driven by a hydraulic multi-way reversing valve 4 - 4 in the hydraulic system 4 to adjust the height of the truss mechanism 7 .

[0062] In one embodiment, the lifting cylinder 6-2 in the lifting device 6 is powered by the hydraulic system 4, the hydraulic pump 4-3 draws hydraulic oil from the hydraulic oil tank 4-1, and transmits the high-pressure hydraulic oil to the lifting cylinder 6-2 through the hydraulic pipeline. The hydraulic multi-way reversing valve 4-4 is used to control the flow direction of the hydraulic oil, thereby realizing the telescopic action of the lifting cylinder 6-2. The hydraulic drive mode can not only provide a smooth and powerful power output, but also accurately control the lifting speed and lifting range by adjusting the flow and pressure of the hydraulic oil to meet the needs of different construction scenes; the scissor mechanism 6-1 is composed of a plurality of cross rods, and the telescopic action of the lifting cylinder 6-2 drives the scissor mechanism 6-1 to expand or contract up and down. When the lifting cylinder 6-2 is extended, it pushes the scissor mechanism 6-1 to expand, so that the truss mechanism 7 rises accordingly; conversely, when the lifting cylinder 6-2 contracts, it pulls the scissor mechanism 6-1 to close, so that the truss mechanism 7 descends. The multi-point support design of the scissor mechanism 6-1 provides uniform support force during the lifting process, ensuring that the truss mechanism 7 can maintain a smooth vertical motion trajectory. The lifting device 6 works in coordination with the upper frame 2 and the truss mechanism 7: during operation, the lifting cylinder 6-2 drives the scissor mechanism 6-1 to expand or contract, driving the upper frame 2 and the truss mechanism 7 to rise and fall accordingly; when the truss mechanism 7 is at the target height position, the lifting cylinder 6-2 stops moving, and the locking function of the hydraulic system 4 keeps the scissor mechanism 6-1 at the current height without changing, thereby ensuring the stability and safety of the escape pipe layout.

[0063] The truss mechanism 7 includes a spliced ​​truss frame 7-1, which is modularly spliced ​​through connectors. The escape duct 7-2 is made of high-strength material and fixed to the truss frame 7-1.

[0064] In one embodiment, the truss mechanism 7 is composed of a spliced ​​truss frame 7-1, and each truss frame 7-1 is modularly spliced ​​by a connector. The connector adopts a standardized interface design, which can quickly align and fix each module during the splicing process to ensure that the modules are tightly and stably connected. According to the specific needs of tunnel construction, the operator can adjust the overall length of the truss mechanism by increasing or decreasing the number of truss frames, thereby realizing the flexible arrangement of the escape duct. This modular splicing design is convenient for the installation and adjustment of the equipment, and ensures the overall rigidity and stability after the splicing is completed; the escape duct 7-2 is made of high-strength material and is firmly mounted on the truss frame 7-1 through a special fixing. During the splicing process, the fixings on each truss frame 7-1 tightly connect the escape duct 7-2 to the frame structure to ensure that the duct is evenly distributed and stable on the entire truss mechanism 7. This fixing method can effectively resist vibration and impact during construction, and prevent the escape duct from loosening or shifting due to external forces, thereby providing reliable protection for evacuation in emergency situations.

[0065] During the tunnel face blasting operation, the truss mechanism 7 is driven to retract to the filling face end by the telescopic device 5 to avoid damage to the escape pipe 7-2 by flying rocks. After the blasting is completed, the telescopic device 5 is driven to restore to the working position.

[0066] In one embodiment, when blasting is performed at the tunnel face, the truss mechanism 7 is driven by the telescopic device 5 to achieve a retraction action. The drive motor 5-1 in the telescopic device 5 is started, and the chain 5-3 is driven through the sprocket 1 5-2, and the chain is connected to the sprocket 2 5-5, and the sprocket 2 drives the rack 7-3 on the truss mechanism 7 to move through the coaxial gear 5-6. The truss mechanism 7 moves to the filling surface end along the guide device 2-2 of the upper top frame 2-1 to ensure that the escape pipe 7-2 is away from the blasting area to avoid direct impact of flying rocks; after the truss mechanism 7 retracts to the filling surface end, the escape pipe 7-2 is protected by the filling surface to avoid structural damage caused by flying rocks or impact force during the blasting process. At the same time, the high rigidity design of the truss frame 7-1 further enhances the impact resistance of the truss mechanism and ensures the overall stability of the equipment in the retracted state. This design can effectively ensure the safety of the equipment during high-intensity blasting operations; after the blasting operation is completed, the telescopic device 5 is started through the electrical system 3 to drive the truss mechanism 7 to recover from the filling surface end to the working position. The drive motor 5-1 runs in the reverse direction, and drives the truss mechanism 7 to move smoothly to the predetermined position along the guide device 2-2 through the sprocket, chain and gear rack transmission structure. The movement trajectory of the truss mechanism is controlled by the limit of the guide device 2-2 to ensure smooth and accurate operation during the recovery process.

[0067] The electrical system 3 includes an electrical control box, a remote controller, and control circuits of the chassis system 1 , the lifting device 6 , and the truss mechanism 7 . The remote controller is used to remotely control the movement of the trolley, the extension and retraction of the truss mechanism 7 , and the height adjustment of the lifting device 6 .

[0068] In one embodiment, the remote controller serves as the core operation terminal of the electrical system 3 and has a remote control function. The remote controller communicates with the electrical control box via wireless signals. When the operator inputs a corresponding control command, the remote controller sends a signal to the electrical control box, and the electrical control box triggers the action of the chassis system 1, the truss mechanism 7 or the lifting device 6 according to the signal content. For example:

[0069] The operator inputs the movement command through the remote control, and the electrical control box controls the movement of the driving steering wheel 1-1 in the chassis system 1 to realize the straight-line travel, lateral movement or 360° in-situ steering of the equipment;

[0070] When the telescopic command is input, the electrical control box controls the driving motor 5-1 in the telescopic device 5 to operate, driving the truss mechanism 7 to complete the telescopic action;

[0071] When a height adjustment command is input, the electrical control box controls the hydraulic multi-way reversing valve 4 - 4 in the hydraulic system 4 , drives the lifting cylinder 6 - 2 in the lifting device 6 to extend and retract, and adjusts the height of the truss mechanism 7 .

[0072] This embodiment further provides a method for using a tunnel escape pipe trolley based on a tunnel escape pipe trolley, comprising the following steps:

[0073] Step 1: Control the driving steering wheel 1-1 through the electrical system 3 to move the trolley to the tunnel construction position;

[0074] Step 2: According to the height distance between the tunnel face and the filling surface, the height of the truss mechanism 7 is adjusted by the lifting device 6;

[0075] Step 3: During the blasting operation at the tunnel face, the truss mechanism 7 is retracted to the end of the filling face by the telescopic device 5 to avoid the influence of blasting broken rocks;

[0076] Step 4: After the blasting is completed, the truss mechanism 7 is restored to the working position by the telescopic device 5;

[0077] Step 5: When it is necessary to move to the other side of the tunnel, the electrical system 3 controls the driving steering wheel 1-1 to make a 90° lateral turn and move the trolley to the target position.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel escape pipeline trolley, characterized in that: include: The chassis system (1) is used to provide the trolley with load-bearing, traveling and steering functions; An upper frame (2) comprises an upper frame frame (2-1), wherein the upper frame frame (2-1) is connected to a lifting device (6) via a pin shaft, and the lifting device (6) is connected to a chassis system (1); A truss mechanism (7) comprises a spliced ​​truss frame (7-1) and an escape duct (7-2) fixed on the truss frame (7-1); the truss mechanism (7) is limitedly assembled in the upper frame (2-1) through a guide wheel device (2-2), and is meshed with a gear (5-6) of a telescopic device (5) through a rack (7-3) to achieve reciprocating motion along the length direction of the upper frame (2-1); A lifting device (6), comprising a scissor mechanism (6-1) and a lifting cylinder (6-2), wherein the lifting cylinder (6-2) is driven by a hydraulic system (4) and is used to adjust the height of the upper frame (2) and the truss mechanism (7); A hydraulic system (4), comprising a hydraulic oil tank (4-1), a hydraulic pump (4-3) and a hydraulic multi-way reversing valve (4-4), for providing power for the lifting device (6); The electrical system (3) is used to control the operation of the chassis system (1), the truss mechanism (7) and the lifting device (6).

2. A tunnel escape pipeline trolley according to claim 1, characterized in that: The chassis system (1) comprises a driving steering wheel (1-1) and an auxiliary support wheel (1-2); the driving steering wheel (1-1) achieves straight-line walking through a driving motor, and achieves lateral movement and 360-degree steering through a steering motor.

3. The tunnel escape pipeline trolley according to claim 1, characterized in that: The chassis system (1) comprises a water tank system (1-3), which serves as both a counterweight device for the trolley and a water supply source, and is connected to a motor water pump (1-4) and an automatic hose reel (1-5) for use in fire fighting during cloth hanging operations.

4. The tunnel escape pipeline trolley according to claim 1, characterized in that: The upper frame (2) comprises an upper frame frame (2-1), the upper frame frame (2-1) is connected to the scissor mechanism (6-1) of the lifting device (6) via a pin shaft, and a guide wheel device (2-2) is arranged on the upper frame frame (2-1), and the truss mechanism (7) is limitedly assembled in the upper frame frame (2-1) via the guide wheel device (2-2).

5. The tunnel escape pipeline trolley according to claim 1, characterized in that: The truss mechanism (7) is driven by the telescopic device (5), and the telescopic device (5) comprises a driving motor (5-1), a sprocket wheel one (5-2) connected to the driving motor (5-1), a transmission structure connecting the sprocket wheel one (5-2) and the sprocket wheel two (5-5) via a chain (5-3), and a gear wheel (5-6) coaxial with the sprocket wheel two (5-5), wherein the gear wheel (5-6) meshes with a rack (7-3) on the truss mechanism (7) to realize reciprocating movement of the truss mechanism (7).

6. The tunnel escape pipeline trolley according to claim 1, characterized in that: The lifting device (6) comprises a scissor mechanism (6-1) and a lifting cylinder (6-2); the lifting cylinder (6-2) is driven by a hydraulic multi-way reversing valve (4-4) in the hydraulic system (4) and is used to adjust the height of the truss mechanism (7).

7. The tunnel escape pipeline trolley according to claim 1, characterized in that: The truss mechanism (7) comprises a spliced ​​truss frame (7-1), wherein the truss frame (7-1) is modularly spliced ​​via connectors, and the escape duct (7-2) is made of high-strength material and fixed to the truss frame (7-1).

8. The tunnel escape pipeline trolley according to claim 1, characterized in that: During blasting operations at the tunnel face, the truss mechanism (7) is driven by the telescopic device (5) to retract to the filling face end to prevent damage to the escape pipe (7-2) by flying rocks, and is driven by the telescopic device (5) to return to the working position after the blasting is completed.

9. The tunnel escape pipeline trolley according to claim 1, characterized in that: The electrical system (3) comprises an electrical control box, a remote controller and control circuits connected to the chassis system (1), the lifting device (6) and the truss mechanism (7); the remote controller is used to remotely control the movement of the trolley, the extension and retraction of the truss mechanism (7) and the height adjustment of the lifting device (6).

10. A method for using a tunnel escape pipe trolley, according to a tunnel escape pipe trolley according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Control the driving steering wheel (1-1) through the electrical system (3) to move the trolley to the tunnel construction position; Step 2: adjusting the height of the truss mechanism (7) by means of a lifting device (6) according to the height distance between the tunnel face and the filling surface; Step 3: During blasting operation at the tunnel face, the truss mechanism (7) is retracted to the end of the filling face by the telescopic device (5) to avoid the influence of blasting rock; Step 4: After the blasting is completed, the truss mechanism (7) is restored to the working position by the telescopic device (5); Step 5: When it is necessary to move to the other side of the tunnel, the electrical system (3) controls the driving steering wheel (1-1) to perform a 90° lateral turn and move the trolley to the target position.

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