Diversion tunnel pressure steel pipe rail transport trolley and transport method

Abstract

The invention relates to the technical field of diversion tunnel pressure steel pipe transportation, in particular to a diversion tunnel pressure steel pipe rail transportation trolley and a transportation method. The transportation device comprises a transportation vehicle body; the walking driving mechanism is mounted on the lower side of the transport vehicle body and can drive the transport vehicle body to walk on the adit track and to hump on the inclined hole track under the traction of traction equipment; and the steel pipe supporting mechanism is mounted on the transportation vehicle body and can support a pressure steel pipe body and adjust the bottom elevation and the inclination angle of the pressure steel pipe body, so that the transportation efficiency and the construction safety of the pressure steel pipe of the diversion tunnel in the tunnel can be remarkably improved, and the construction requirements of'high quality, high efficiency and green 'of water-power engineering are met. The transportation method is based on the transportation device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diversion tunnel pressure steel pipe transportation, in particular to a diversion tunnel pressure steel pipe rail transportation trolley and a transportation method. BACKGROUND

[0002] In recent years, with the promotion of the "double carbon" goal and the transformation of energy structure, China's hydropower development is accelerating towards deep-buried long tunnels and large-diameter pressure steel pipes, and the steel pipe transportation in the tunnel is facing multiple challenges such as super large diameter (> Φ6000mm), super heavy single section (> 20t) and complex ramps (horizontal tunnel + inclined shaft).

[0003] The traditional transportation method of the pressure steel pipe of the diversion tunnel mainly uses a winch plus a turning ground anchor to drag a flat plate transportation trolley, which has many disadvantages: uneven settlement of the track foundation in the horizontal tunnel, leading to deformation of the flat iron track and deviation of the trolley; the traditional trolley needs additional jacking equipment and measures for docking and unloading in the tunnel, and the operation and cooperation of the winch, steel wire rope and ground anchor need to be frequently inspected and maintained.

[0004] Therefore, there is an urgent need for a multifunctional transportation trolley that integrates transportation, installation and unloading, while considering operation safety and easy operation, to meet the "high quality, high efficiency and green" construction requirements. SUMMARY

[0005] In view of the technical problems existing in the transportation of the pressure steel pipe of the existing diversion tunnel in the tunnel, the present application provides a diversion tunnel pressure steel pipe rail transportation trolley and a transportation method, which can significantly improve the transportation efficiency and construction safety of the pressure steel pipe of the diversion tunnel in the tunnel, and meet the construction requirements of "high quality, high efficiency and green" of hydropower engineering.

[0006] The present application is realized by the following technical solutions:

[0007] In a first aspect, the present application provides a diversion tunnel pressure steel pipe rail transportation trolley, comprising: a transportation trolley body; a walking driving mechanism installed on the lower side of the transportation trolley body, capable of driving the transportation trolley body to walk on the horizontal tunnel track and to slide down on the inclined tunnel track under the traction of the traction equipment; a steel pipe supporting mechanism installed on the transportation trolley body, capable of supporting the pressure steel pipe body and adjusting the elevation and inclination angle of the bottom of the pressure steel pipe body.

[0008] The application provides a diversion tunnel pressure steel pipe track transportation trolley, which comprises a transportation vehicle body, a walking driving mechanism and a steel pipe supporting mechanism, the driving mechanism is installed on the lower side of the transportation vehicle body and can drive the transportation vehicle body to walk on a horizontal tunnel track and slide down on an inclined tunnel track under the traction of traction equipment, the steel pipe supporting mechanism is installed on the transportation vehicle body and can support a pressure steel pipe body and adjust the bottom elevation and inclination angle of the pressure steel pipe body, in use, the pressure steel pipe body is hoisted on the steel pipe supporting mechanism by hoisting equipment, then the transportation vehicle body is moved in the horizontal tunnel by the driving mechanism, when in the inclined tunnel, the transportation vehicle body is slid down to the installation position by the traction equipment, finally, the bottom elevation and inclination angle of the pressure steel pipe body are automatically adjusted by the steel pipe supporting mechanism to complete the butt joint and transportation of the pressure steel pipe body, realizing the mechanization and continuous operation of the whole process of "loading-transportation-unloading" of the super-large-diameter and super-heavy steel pipe in the tunnel, compared with the traditional winch dragging flat car scheme, the transportation operation time is shortened, the operation personnel is reduced, the transportation efficiency and the construction safety level are significantly improved, and the construction requirements of "high quality, high efficiency and green" of new era hydropower engineering are met.

[0009] In an optional embodiment of the application, the walking driving mechanism comprises four groups of driving wheel assemblies, each of the driving wheel assemblies is installed at the corresponding corner of the transportation vehicle body, so that the walking driving mechanism can supply sufficient driving force to drive the transportation vehicle body to move by itself in the horizontal tunnel section, and the driving speed of each driving wheel assembly can be adjusted to correct the running direction of the transportation vehicle body, so as to avoid the deviation caused by the deformation of the track.

[0010] In an optional embodiment of the application, the driving wheel assembly comprises a walking wheel capable of being clamped on the track and rotating along its own axis, and a walking driving motor in transmission connection with the walking wheel to drive the walking wheel to rotate along its own axis, so as to coordinate the rotation speed of each walking wheel.

[0011] In an optional embodiment of the application, the driving wheel assembly further comprises an output gear in transmission connection with the walking driving motor through a walking speed reducer, a driven gear coaxially fixedly connected with the walking wheel, and a clutch gear capable of being engaged with the output gear and the driven gear at the same time, so as to output the driving force of each driving wheel assembly or not.

[0012] In an optional embodiment of the application, the steel pipe supporting mechanism comprises four groups of supporting and adjusting assemblies, each of the supporting and adjusting assemblies is installed at the corresponding corner of the transportation vehicle body, so as to ensure that the steel pipe supporting mechanism can stably clamp and support the pressure steel pipe body and adjust the elevation and posture of the pressure steel pipe body at will.

[0013] In an alternative embodiment of the present application, the supporting and adjusting assembly comprises a supporting swing arm, one end of which is hinged to the middle part of the transport trolley body; a supporting and adjusting oil cylinder, which is hinged to the side wall of the transport trolley body, and the moving end of which is hinged to the other end of the supporting swing arm; wherein the supporting swing arm is always in a state of inclining inwardly to the middle part of the transport trolley body, so as to ensure that the supporting and adjusting assembly can adjust the elevation of the wall of the pressure steel pipe supported thereby, and thus adjust the elevation and posture of the pressure steel pipe body.

[0014] In an alternative embodiment of the present application, the supporting and adjusting assembly further comprises an adjusting roller, which is installed on the supporting swing arm; the axis of the adjusting roller is parallel to the length direction of the transport trolley body, and the adjusting roller is used to support the side wall of the pressure steel pipe body, so as to avoid that the pressure steel pipe and the supporting swing arm slide relative to each other and damage the pressure steel pipe body and the supporting and adjusting assembly when the posture of the pressure steel pipe body is adjusted.

[0015] In an alternative embodiment of the present application, the supporting and adjusting assembly further comprises a rotating driver, which is in transmission connection with the adjusting roller, and is used to drive the adjusting roller to rotate along the axis thereof, so as to drive the pressure steel pipe body to rotate along the axis thereof, and adjust the installation angle of the pressure steel pipe body.

[0016] In an alternative embodiment of the present application, the rotating driver comprises a driven sprocket, which is coaxially fixedly connected with the adjusting roller; a rotating driving motor, which is installed at the hinge between the supporting swing arm and the transport trolley body; and a driving sprocket, which is installed on the output of the rotating driving motor, and is in transmission connection with the driven sprocket through a driving chain, so that the rotating driver can rotate along with the swing of the supporting swing arm, and thus ensure that the rotating driver can drive the adjusting roller to rotate in real time.

[0017] In a second aspect, the present application provides a method for transporting a pressure steel pipe of a diversion tunnel, which is based on the above-mentioned track transport trolley for a pressure steel pipe of a diversion tunnel, and comprises the following steps:

[0018] S10, installing the transport trolley on a flat tunnel track;

[0019] S20, hoisting the pressure steel pipe body on the transport trolley body, and supporting the same through the steel pipe supporting mechanism;

[0020] S30, driving the transport trolley body to move on the flat tunnel track through the walking driving mechanism, and driving the transport trolley body to move to the end of the flat tunnel track;

[0021] S40, connecting the transport trolley body with a winding machine at the entrance of the diversion tunnel through a cable;

[0022] S50, making the transport trolley body move to the installation position through the winding machine along the inclined shaft track;

[0023] S60, adjusting the height of the pressure steel pipe body by the steel pipe supporting mechanism, so that the bottom elevation of the pressure steel pipe body reaches the design elevation;

[0024] S70, rotating the pressure steel pipe body along its axis by the steel pipe supporting mechanism, adjusting the installation angle of the pressure steel pipe body, so that the posture of the pressure steel pipe body meets the installation requirements.

[0025] The water diversion tunnel pressure steel pipe transportation method provided by the application is based on the above-mentioned water diversion tunnel pressure steel pipe rail transportation trolley, the pressure steel pipe body is first hoisted on the steel pipe supporting mechanism by hoisting equipment, then the transportation trolley is driven to move in the horizontal tunnel by the driving mechanism, when in the inclined tunnel, the transportation trolley is released to the installation position by the pulling equipment, finally the bottom elevation and the inclination angle of the pressure steel pipe body are automatically adjusted by the steel pipe supporting mechanism to complete the butt joint and transportation of the pressure steel pipe body, realizing the mechanization and continuous operation of the whole process of "loading-transportation-unloading" of the super-large diameter and super-heavy steel pipe in the tunnel, compared with the traditional winch dragging flat car scheme, the transportation operation time is shortened and the operation personnel are reduced, the transportation efficiency and the construction safety level are significantly improved, meeting the construction requirements of "high quality, high efficiency and green" of new era hydropower engineering.

[0026] Compared with the prior art, the application has the following advantages and beneficial effects:

[0027] 1、The water diversion tunnel pressure steel pipe rail transportation trolley provided by the application, including a transportation trolley, a walking driving mechanism and a steel pipe supporting mechanism, the driving mechanism is installed on the lower side of the transportation trolley, which can drive the transportation trolley to walk on the horizontal tunnel track and release on the inclined tunnel track under the pulling of the pulling equipment, the steel pipe supporting mechanism is installed on the transportation trolley, which can support the pressure steel pipe body and adjust the bottom elevation and the inclination angle of the pressure steel pipe body, in use, the pressure steel pipe body is hoisted on the steel pipe supporting mechanism by hoisting equipment, then the transportation trolley is driven to move in the horizontal tunnel by the driving mechanism, when in the inclined tunnel, the transportation trolley is released to the installation position by the pulling equipment, finally the bottom elevation and the inclination angle of the pressure steel pipe body are automatically adjusted by the steel pipe supporting mechanism to complete the butt joint and transportation of the pressure steel pipe body, realizing the mechanization and continuous operation of the whole process of "loading-transportation-unloading" of the super-large diameter and super-heavy steel pipe in the tunnel, compared with the traditional winch dragging flat car scheme, the transportation operation time is shortened and the operation personnel are reduced, the transportation efficiency and the construction safety level are significantly improved, meeting the construction requirements of "high quality, high efficiency and green" of new era hydropower engineering.

[0028] 2. The method for transporting the penstock of the diversion tunnel, which is based on the track transport trolley for the penstock of the diversion tunnel, hoists the penstock body on the penstock supporting mechanism through hoisting equipment, then drives the transport trolley to move in the horizontal tunnel through the driving mechanism, when in the inclined tunnel, pulls the transport trolley to the installation position through the pulling equipment, finally adjusts the elevation and the inclination angle of the bottom of the penstock body through the penstock supporting mechanism to complete the butt joint and transportation of the penstock body, realizes the mechanization and continuous operation of the whole process of "loading-transportation-unloading" of the large-diameter and overweight steel pipe in the tunnel, compared with the traditional winch dragging flat car scheme, can shorten the transportation operation time and reduce the operation personnel, significantly improves the transportation efficiency and the construction safety level, and meets the construction requirements of "high quality, high efficiency and green" of the new era of hydropower engineering. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For ordinary skilled persons in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0030] In the drawings:

[0031] Figure 1 The main view structural schematic diagram of the track transport trolley for the penstock of the diversion tunnel provided by the embodiments of the present application;

[0032] Figure 2 The side view structural schematic diagram of the track transport trolley for the penstock of the diversion tunnel provided by the embodiments of the present application;

[0033] Figure 3 The A part of the enlarged structural schematic diagram of Figure 2

[0034] Figure 4 The B part of the enlarged structural schematic diagram of Figure 1

[0035] Figure 5 The structural schematic diagram of the track transport trolley for the penstock of the diversion tunnel provided by the embodiments of the present application when carrying the penstock body;

[0036] Figure 6 The structural schematic diagram of the track transport trolley for the penstock of the diversion tunnel provided by the embodiments of the present application when adjusting the posture of the penstock body.

[0037] The reference signs and corresponding component names in the drawings:

[0038] ​​10 - transport vehicle body, 20 - drive wheel assembly, 21 - walking wheel, 22 - walking drive motor, 23 - output gear, 24 - driven gear, 25 - clutch gear, 26 - walking reduction machine, 30 - driven wheel assembly, 40 - support adjustment assembly, 41 - support swing arm, 42 - adjustment cylinder, 43 - adjustment roller, 44 - rotary drive, 44a - driven sprocket, 44b - rotary drive motor, 44c - drive sprocket, 44d - drive chain, 44e - tension sprocket, 50 - pressure pipe body. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0041] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0042] In the description of the embodiments of the present application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In the description of the present application, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Embodiment 1

[0045] In combination Figure 1 The embodiment provides a diversion tunnel pressure steel pipe track transportation trolley, which comprises a transportation trolley body 10, a walking driving mechanism installed on the lower side of the transportation trolley body 10 and capable of driving the transportation trolley body 10 to walk on a flat tunnel track and slide down on an inclined tunnel track under the traction of a traction device, and a steel pipe supporting mechanism installed on the transportation trolley body 10 and capable of supporting a pressure steel pipe body 50 and adjusting the elevation and inclination angle of the bottom of the pressure steel pipe body 50.

[0046] In combination Figure 1 And Figure 2 The transportation trolley comprises a main beam, an end beam, a walking beam and corresponding hydraulic pump stations and an electrical control system.

[0047] In combination Figure 1 And Figure 2 The walking driving mechanism comprises four groups of driving wheel assemblies 20, each of which is installed at a corresponding corner of the transportation trolley body 10 to drive the walking driving mechanism to provide sufficient driving force to drive the transportation trolley body 10 to carry the pressure steel pipe body 50 to move in the flat tunnel section, and the driving speed of each driving wheel assembly 20 can be adjusted to correct the moving direction of the transportation trolley body 10 to avoid deviation due to the deformation of the rail track.

[0048] In combination Figure 3 And Figure 4 The driving wheel assembly 20 comprises a walking wheel 21 capable of being clamped on the rail track and rotating along its own axis, a walking driving motor 22 in transmission connection with the walking wheel 21 to drive the walking wheel 21 to rotate along its own axis to facilitate the coordinated control of the rotating speed of each walking wheel 21.

[0049] It can be understood that the driving wheel assembly 20 further comprises an output gear 23 in transmission connection with the walking driving motor 22 through a walking speed reducer 26, a driven gear 24 coaxially fixedly connected with the walking wheel 21, and a clutch gear 25 capable of being engaged with the output gear 23 and the driven gear 24 at the same time to facilitate the output of driving force of each driving wheel assembly 20.

[0050] In the embodiment, the walking driving motor 22 is a 1.1kW variable frequency motor, i.e., the transportation trolley body 10 is driven by four 1.1kW variable frequency motors. In a specific engineering example, the walking wheel 21 is clamped on a 40x80mm flat rail track, a pair of driven wheel assemblies 30 are arranged in the middle of the main beam of the transportation trolley body 10, and the walking center distance thereof is 3600mm to avoid the deformation of the transportation trolley body 10 under the gravity of the pressure steel pipe body 50.

[0051] Correspondingly, the steel pipe supporting mechanism comprises four groups of supporting and adjusting assemblies 40, each of the supporting and adjusting assemblies 40 is installed at the corresponding corner of the transport vehicle body 10, so as to ensure that the steel pipe supporting mechanism can stably clamp and support the pressure steel pipe body 50 and adjust the elevation and posture of the pressure steel pipe body 50.

[0052] In combination Figure 4 , the supporting and adjusting assembly 40 comprises a supporting swing arm 41, one end of which is hinged to the middle part of the transport vehicle body 10; a supporting and adjusting oil cylinder 42, which is hinged to the side wall of the transport vehicle body 10, and the moving end of which is hinged to the other end of the supporting swing arm 41; wherein the supporting swing arm 41 is always in a state of inclining inwardly to the middle part of the transport vehicle body 10, so as to ensure that the supporting and adjusting assembly 40 can adjust the elevation of the pressure steel pipe wall supported thereby, so as to adjust the elevation and posture of the pressure steel pipe body 50.

[0053] On this basis, the supporting and adjusting assembly 40 further comprises an adjusting roller 43 (a polyurethane roller), which is installed on the supporting swing arm 41; the axial direction of the adjusting roller 43 is parallel to the length direction of the transport vehicle body 10, and the adjusting roller 43 is used for supporting the side wall of the pressure steel pipe body 50, so as to avoid that the pressure steel pipe and the supporting swing arm 41 produce relative sliding to damage the pressure steel pipe body 50 and the supporting and adjusting assembly 40 when the posture of the pressure steel pipe body 50 is adjusted.

[0054] It should be understood that the supporting and adjusting assembly 40 further comprises a rotary driver 44, which is in transmission connection with the adjusting roller 43, and is used for driving the adjusting roller 43 to rotate along the axial direction thereof, so as to ensure that the supporting and adjusting assembly 40 can drive the pressure steel pipe body 50 to rotate along the axial direction thereof, and adjust the installation angle of the pressure steel pipe body 50.

[0055] Specifically, the rotary driver 44 comprises a driven sprocket 44a, which is coaxially fixedly connected with the adjusting roller 43; a rotary driving motor 44b, which is installed at the hinge between the supporting swing arm 41 and the transport vehicle body 10; a driving sprocket 44c, which is installed on the output of the rotary driving motor 44b, and is in transmission connection with the driven sprocket 44a through a driving chain 44d, so that the rotary driver 44 can rotate along with the swing of the supporting swing arm 41, and ensure that the rotary driver 44 can drive the adjusting roller 43 to rotate in real time.

[0056] Generally, a tensioning sprocket 44e is further arranged between the driven sprocket 44a and the driving sprocket 44c, and the tensioning sprocket 44e is installed on the supporting and adjusting swing arm, so as to adjust the tightness of the driving chain 44d through the tensioning sprocket 44e.

[0057] The water diversion tunnel pressure steel pipe track transport trolley provided by the embodiment, in use, through hoisting equipment, the pressure steel pipe body 50 is hoisted on the steel pipe supporting mechanism ( Figure 5 ), then through the driving mechanism, the transport vehicle body 10 is moved in the horizontal tunnel, when in the inclined tunnel, through the pulling equipment, the transport vehicle body 10 is put down to the installation position, finally through the steel pipe supporting mechanism, the bottom elevation and the inclination angle of the pressure steel pipe body 50 are automatically adjusted ( Figure 6 ), the butt joint and transportation of the pressure steel pipe body 50 are completed, the whole process mechanization and continuous operation of the large-diameter and overweight steel pipe in the tunnel are realized, compared with the traditional winch dragging flat car scheme, the transportation operation time is shortened, the operation personnel is reduced, the transportation efficiency and the construction safety level are significantly improved, and the construction requirements of high quality, high efficiency and green in the new era of hydropower engineering are met.

[0058] Among them, each driving wheel assembly 20 is installed at the corresponding corner of the transport vehicle body 10, and the driving speed of each driving wheel assembly 20 can be adjusted to correct the running direction of the transport vehicle body 10, so that the deviation caused by the deformation of the rail track is avoided.

[0059] Embodiment 2

[0060] In combination Figure 2 , the embodiment provides a water diversion tunnel pressure steel pipe transportation method, based on the water diversion tunnel pressure steel pipe track transport trolley described in embodiment 1, including the following steps:

[0061] S10, install the transport trolley on the horizontal tunnel track.

[0062] Specifically, in the processing plant, the manufacturing and pre-assembly (100% UT detection is performed on the key weld according to NB / T47013, and the whole machine is tested for 2h) of the transport trolley main beam, the roller frame, the hydraulic pump station, the electrical control system and the track accessories are completed according to the design drawings, and after the acceptance, the machine is disassembled and shipped.

[0063] In a specific engineering example: the flat hole section is laid with 40x80mm flat iron (Q235B) track, the track gauge is 3600mm, and the track is welded and reinforced with φ25 anchor rod (HRB400, anchor rod into rock depth≥500mm); the inclined shaft section is laid with 20#b I-beam track, the track gauge is 3600mm, the I-beam is welded and reinforced with φ25 bar (bar into rock≥500mm), the I-beam track is increased by more than or equal to 10mm thick stiffener, the stiffener spacing is 1.0m, and the two sides are staggered by 0.5m. When the depth of the pit caused by overbreak is greater than 30cm below the track foundation surface, M30 quick-setting mortar is used to reinforce the track foundation at the overbreak (first hang the net and spray C25 concrete to level, then use M30 quick-setting mortar to pad the bottom of the track, and the 24h compressive strength is≥20MPa after which it can be loaded).

[0064] Then, the trolley body is transported to the intersection of the construction branch hole and the water diversion tunnel below, hoisted to the flat hole track by hoisting equipment (such as 50t Tiancha), and the main beam, roller frame, pump station, and electrical control system are assembled on the flat track.

[0065] Among them, the hydraulic system is: 1 station 4 cylinders, pump station motor power 4kW, equipped with synchronous valve and explosion-proof valve; the electrical system is: three-phase four-wire system 3P380V / 220V±10%, 50Hz±2%, total power 14.4kW, equipped with PLC+wireless remote control (250m); safety devices include hydraulic pressure loss locking, manual mechanical locking, sound and light alarm, etc.

[0066] After assembly, the PLC is powered on for self-checking, the wireless remote control is debugged, and the empty load is tested: the electric vehicle runs back and forth 3 times in the flat hole section, and the winch machine is released 2 times in the inclined shaft section, and no abnormalities are confirmed before subsequent operation.

[0067] S20, hoist the pressure steel pipe body 50 on the transport trolley body 10, and support it through the steel pipe support mechanism.

[0068] Combined with Figure 5 , specifically, start the hydraulic pump station, 4 branch adjusting oil cylinders 42 (D80 / d55-500 double-acting hydraulic cylinders, rated pressure 16MPa) synchronously lift the support swing arm 41, control its stroke to be 100mm, and make the adjusting roller 43 (Φ350x160mm polyurethane roller) in linear contact with the outer wall of the pressure steel pipe body 50. Then use binding equipment (such as 3t hand-operated hoist) to bind the steel pipe in four places, and lock the hoist chain with the transport trolley ear plate to ensure that the steel pipe does not slip or rotate during transportation.

[0069] S30, drive the transport trolley body 10 to walk on the flat hole track through the walking driving mechanism, and drive the transport trolley body 10 to move to the end of the flat hole track.

[0070] Specifically, the embodiment adopts 4×1.1kW variable frequency motor to drive the walking wheel 21 to rotate, and the rated speed is 2.4m / min.

[0071] S40, connecting the transport vehicle body 10 with the portal hoist of the diversion tunnel by the cable.

[0072] Specifically, when the transport vehicle body 10 moves to the end of the flat hole track, the walking motor is turned off, and the front end of the transport trolley is connected with the portal hoist (rated tension 500kN) through the cable (56mm6×37+FC steel wire rope).

[0073] S50, moving the transport vehicle body 10 to the installation position by the hoist along the inclined shaft track.

[0074] Specifically, the hoist adopts double braking (working brake+safety brake) and 2.0m / min overspeed protection; the release speed is 1.5m / min, and the hoist is controlled by constant tension, and the tension fluctuation is less than or equal to 5kN.

[0075] S60, adjusting the height of the pressure steel pipe body 50 by the steel pipe supporting mechanism, so that the bottom elevation of the pressure steel pipe body 50 reaches the design elevation.

[0076] Combined Figure 6 After the transport trolley reaches the installation position, the branch adjusting cylinder 42 is secondarily jacked up (about 170mm stroke), so that the bottom of the pressure steel pipe body 50 reaches the design elevation.

[0077] S70, driving the pressure steel pipe body 50 to rotate along its own axis by the steel pipe supporting mechanism, adjusting the installation angle of the pressure steel pipe body 50, so that the posture of the pressure steel pipe body 50 meets the installation requirements.

[0078] That is, the adjusting roller 43 is driven to rotate by the rotary driver 44, the pressure steel pipe body 50 is accurately rotated to the installation angle (accuracy ±1°), and manual cooperation with 3t hoist is used for fine adjustment, so that the steel pipe is aligned.

[0079] After the posture adjustment is completed, the pressure steel pipe body 50 after being supported and fixed by the steel support is used, the branch adjusting cylinder 42 is decompressed and withdrawn, the support swing arm 41 is lowered and reset, then the transport trolley is withdrawn, the hoist is reversely driven at the original speed, and after reaching the portal of the inclined shaft section, it is automatically stopped, and the transport vehicle body 10 is returned to the portal at the original speed by the driving wheel assembly 20, so as to prepare for the transportation of the next section of pressure steel pipe body 50.

[0080] Therefore, the embodiment realizes the mechanization and continuous operation of the whole process of “installation-transportation-unloading” of the super large diameter and super heavy steel pipe in the tunnel. Compared with the traditional hoist dragging flat car scheme in the engineering, the time of a single section of steel pipe is shortened from 4h to 3h, and the number of workers is reduced from 8 to 3.

[0081] In summary, the diversion tunnel pressure steel pipe transportation method provided by the embodiment is based on the above-mentioned diversion tunnel pressure steel pipe track transportation trolley. The pressure steel pipe body 50 is hoisted on the steel pipe supporting mechanism through hoisting equipment, then the transportation trolley 10 is driven to move in the flat tunnel by the driving mechanism, when in the inclined tunnel, the transportation trolley 10 is pulled to the installation position by the pulling equipment, finally the pressure steel pipe body 50 is connected and transported by automatically adjusting the bottom elevation and the inclination angle of the pressure steel pipe body 50 through the steel pipe supporting mechanism, realizing the mechanization and continuous operation of the whole process of “loading-transportation-unloading” of the large-diameter and overweight steel pipe in the tunnel. Compared with the traditional winch dragging flat car scheme, the transportation operation time is shortened and the operation personnel is reduced, the transportation efficiency and the construction safety level are significantly improved, meeting the construction requirements of “high quality, high efficiency and green” of the new era hydropower engineering.

[0082] The above specific embodiments further specifically describe the purposes, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A penstock railcar for use in a diversion tunnel, characterized by, Comprise: Transport vehicle body (10); Walking driving mechanism, installed on the lower side of the transport vehicle body (10), capable of driving the transport vehicle body (10) to walk on the flat hole track and slide down on the inclined hole track under the pull of the pulling device; Steel pipe supporting mechanism, installed on the transport vehicle body (10), capable of supporting the pressure steel pipe body (50) and adjusting the elevation and inclination angle of the bottom of the pressure steel pipe body (50).

2. The penstock railcar of claim 1, wherein, The walking driving mechanism comprises four groups of driving wheel assemblies (20), and each driving wheel assembly (20) is installed at the corresponding corner of the transport vehicle body (10).

3. The penstock railcar of claim 2, wherein, The driving wheel assembly (20) comprises: Walking wheel (21), capable of being clamped on the track and rotating along its own axis; Walking driving motor (22), in transmission connection with the walking wheel (21) to drive the walking wheel (21) to rotate along its own axis.

4. The penstock railcar of claim 3, wherein, The driving wheel assembly (20) further comprises: Output gear (23), in transmission connection with the walking driving motor (22) through walking speed reducer (26); Driven gear (24), coaxially fixedly connected with the walking wheel (21); Clutch gear (25), capable of being engaged with the output gear (23) and the driven gear (24) at the same time.

5. The penstock railcar of claim 1, wherein, The steel pipe supporting mechanism comprises four groups of supporting and adjusting assemblies (40), and each supporting and adjusting assembly (40) is installed at the corresponding corner of the transport vehicle body (10).

6. The penstock railcar of claim 5, wherein, The supporting and adjusting assembly (40) comprises: Supporting swing arm (41), one end hinged to the middle part of the transport vehicle body (10); Supporting and adjusting oil cylinder (42), hinged to the side wall of the transport vehicle body (10), the moving end hinged to the other end of the supporting swing arm (41); Wherein, the supporting swing arm (41) is always in the state of inclining to the middle part of the transport vehicle body (10).

7. The penstock railcar of claim 6, wherein, The supporting and adjusting assembly (40) further comprises adjusting roller (43), which is installed on the supporting swing arm (41); The axial direction of the adjusting roller (43) is parallel to the length direction of the transport vehicle body (10), and the adjusting roller (43) is used for supporting the side wall of the pressure steel pipe body (50).

8. The penstock railcar of claim 7, wherein, The supporting and adjusting assembly (40) further comprises rotary driver (44), which is in transmission connection with the adjusting roller (43) and is used for driving the adjusting roller (43) to rotate along its own axis.

9. The penstock railcar of claim 8, wherein, The rotary driver (44) comprises: Driven sprocket (44a), coaxially fixedly connected with the adjusting roller (43); Rotary driving motor (44b), installed at the hinge between the supporting swing arm (41) and the transport vehicle body (10); Drive sprocket (44c), installed on the output of the rotary driving motor (44b) and in transmission connection with the driven sprocket (44a) through drive chain (44d).

10. A method of penstock transportation of a diversion tunnel, characterized in that, The water diversion tunnel pressure steel pipe track transport trolley based on any one of claims 1-9 comprises the following steps: S10, install the transport trolley on the flat hole track; S20, hoist the pressure steel pipe body (50) on the transport vehicle body (10) and support it through the steel pipe supporting mechanism; S30, drive the transport vehicle body (10) to walk on the flat hole track by walking driving mechanism, drive the transport vehicle body (10) to move to the end of the flat hole track; S40, connect the transport vehicle body (10) with the water diversion tunnel portal winch by the cable; S50, slide the transport vehicle body (10) along the inclined shaft track by the winch, so that the transport vehicle body (10) moves to the installation position; S60, adjust the height of the pressure steel pipe body (50) by the steel pipe supporting mechanism, so that the bottom elevation of the pressure steel pipe body (50) reaches the design elevation; S70, drive the pressure steel pipe body (50) to rotate along its own axis by the steel pipe supporting mechanism, adjust the installation angle of the pressure steel pipe body (50), so that the posture of the pressure steel pipe body (50) meets the installation requirements.

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