CN111153130A - Bearing and shifting device of heading machine - Google Patents
Bearing and shifting device of heading machine Download PDFInfo
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- CN111153130A CN111153130A CN201911226832.4A CN201911226832A CN111153130A CN 111153130 A CN111153130 A CN 111153130A CN 201911226832 A CN201911226832 A CN 201911226832A CN 111153130 A CN111153130 A CN 111153130A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
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Abstract
The invention provides a bearing and shifting device of a heading machine, which comprises a bearing rack, a high-position driven wheel assembly (13), a low-position driven wheel assembly (14), a driving wheel assembly (15) and jacking mechanisms, and is characterized in that the bearing rack comprises a frame, an installation seat (12) and jacking mechanism installation plates, the frame comprises a keel (1), two longitudinal beams (3), a plurality of cross beams, two longitudinal force bearing circular tubes (6) and two longitudinal support plates (4), the longitudinal support plates (4) are made of T-shaped steel, the number of the jacking mechanisms is four, piston rods of leg cylinders (39) of the four jacking mechanisms are respectively inserted into leg cylinder through holes in the four jacking mechanism installation plates, and the jacking mechanism installation plates are positioned between a cylinder piston seal head plate and a front end cover of a cylinder body of the leg cylinder (39). The bearing and shifting device of the heading machine has the frame vehicle body with high strength and small deformation, greatly shortens the shifting time of the main machine, greatly improves the shifting efficiency and effectively shortens the whole construction period.
Description
Technical Field
The invention belongs to the technical field of auxiliary equipment of a heading machine, and particularly relates to a bearing and shifting device of the heading machine.
Background
A Boring machine (Boring machine) is a machine for Boring a Tunnel on a flat ground, and is classified into a general machine and a Tunnel Boring Machine (TBM) according to an operation object. The method is divided into an open-type tunneling machine and a shield-type tunneling machine according to the operation mode. The former is known as a large-diameter full-face rock tunnel boring machine, which is a complete set of boring equipment integrating excavation, supporting and slag tapping, and is called an aircraft carrier and a king of a boring machine of engineering machinery, and the latter is known as a shield machine. The shield machine structurally comprises a main machine part, and subsequent matched equipment, such as a trailer and the like, can be combined with and disassembled from the main machine. No matter which type of main machine of the tunneling machine, the appearance is the same as or different from the main machine, but the weight, the outer diameter, the mass distribution, the internal structure and the working principle are different. When the heading machine is used for excavating a subway tunnel, the heading machine generally goes through three steps of downhole assembly, transverse displacement and main line empty pushing (the heading machine is moved along the longitudinal axis direction of the heading machine) and then reaches a pilot tunnel face (a working face which is continuously pushed forwards in an excavation tunnel), and subsequent matched construction equipment is connected to the pilot tunnel face for continuous construction; and after the heading machine arrives at the next subway station and goes out of the tunnel, the main line is pushed for about 300 meters in an empty mode, and the tunnel face of the next pilot tunnel is reached through the subway station to continue construction.
The main machine of the development machine is required to be pushed by external force when the main machine is transversely shifted, the main machine is pushed by the air line and the air line passes through the station. The moving method in the prior art mainly comprises the following steps: firstly, digging transverse pits every 1.5 m on the cement ground of a moving route for providing counter-force support for oil cylinders with thrust of about 200 tons, then laying two rows of rails on the transverse pits, placing a main machine of the tunneling machine on a steel frame, placing the steel frame on the rails, intermittently propelling the main machine forward by virtue of the thrust of the oil cylinders, and moving the oil cylinders in the transverse pits one by one to push the main machine in place. The method is labor-consuming and time-consuming, the displacement efficiency is low, and the whole construction period is long. In addition, during the 90-degree steering from the transverse movement to the positive line idle pushing and the assembling and disassembling process of the main engine on a steel frame, a plurality of jacks are needed, the welding and cutting are needed on the shell of the main engine, and the track and the pit filling are needed to be disassembled after the displacement is completed. Moreover, the bearing vehicle frame structure of the traditional main machine of the development machine is unreasonable and has large deformation, so that the main machine of the development machine is difficult to slide on the bearing vehicle frame. Moreover, the load-carrying vehicle frame is also a whole, and is not suitable for being assembled in a narrow space during underground construction of a tunnel. If a special moving device can be developed to avoid these problems, the moving efficiency can be greatly improved and the whole construction period can be shortened.
Disclosure of Invention
The invention aims to provide a bearing and shifting device of a heading machine, which is provided with a frame vehicle body with high strength and small deformation, can be conveniently and flexibly assembled underground, can realize underground installation of a main machine of the heading machine on the frame vehicle body, can complete shifting of a transverse passage to a main line, then performs 90-degree steering of all gear trains, and pushes the main line to a tunnel face in an idle mode for construction. The method reduces the amount of supporting facilities and engineering for realizing host shifting, particularly greatly shortens the shifting time of the host, greatly improves the shifting efficiency and effectively shortens the whole construction period.
The specific technical scheme of the invention is that the bearing and shifting device of the development machine comprises a bearing rack, a high-position driven wheel component, a low-position driven wheel component, a driving wheel component and a jacking mechanism, and is characterized in that,
the bearing rack comprises a frame, a mounting seat and a jacking mechanism mounting plate, the frame comprises a keel, two longitudinal beams, a plurality of cross beams, two longitudinal force bearing circular tubes and two longitudinal support plates, the keel is positioned on a longitudinal symmetrical central line of the bearing rack, the upper edge surface of each cross beam is provided with a radian matched with the outer surface of a barrel body of the main tunneling machine, the two longitudinal beams, the two longitudinal force bearing circular tubes and the two longitudinal support plates are sequentially and symmetrically arranged on two sides of the keel from inside to outside, the keel, the two longitudinal beams, the two longitudinal force bearing circular tubes and the two longitudinal support plates are vertically arranged with the plurality of cross beams to form a frame structure, the longitudinal support plates are T-shaped steel, the upper surface of a wing plate of the T-shaped steel is a rectangular strip-shaped plane, the rectangular strip-shaped plane is higher than a space plane formed by the upper edge surfaces of the plurality of, the rectangular strip-shaped plane is directly contacted with the outer surface of the main barrel body of the development machine, the mounting seat is provided with a plurality of blocks and is fixedly arranged between two end parts of two adjacent beams, the two end parts of the two adjacent beams are positioned at the same side of the keel and are used for mounting a high-position driven wheel assembly or a driving wheel assembly, the four jacking mechanism mounting plates are symmetrically arranged at the end parts of the two longitudinal sides of the framework in pairs, each jacking mechanism mounting plate is provided with a supporting leg oil cylinder through hole,
the frame of the bearing rack is divided into a first section, a middle section and a tail section, the cross beam of each of the first section, the middle section and the tail section is divided into two end cross beams and a plurality of middle cross beams, the end cross beams at one end of the first section and one end of the tail section are respectively butted with the end cross beams at two ends of the middle section and are fixed by bolts,
the low driven wheel components comprise a plurality of mounting hoop seats, the low driven wheel components are symmetrically mounted on two longitudinal force bearing circular tubes in pairs through the respective mounting hoop seats,
a plurality of high driven wheel assemblies are arranged on the frame of the bearing rack in a pairwise symmetrical manner through the mounting seats,
the driving wheel assemblies are arranged on the frame of the bearing rack in a pairwise symmetrical manner through the mounting seats,
the jacking mechanism comprises a jacking frame and a supporting leg oil cylinder, the jacking frame comprises a supporting plate groove hanging plate, a vertical plate, a bearing inclined plate and an oil cylinder piston end sealing plate, the oil cylinder piston end sealing plate is vertically connected with the lower end of the vertical plate, one end of the bearing inclined plate is connected with the upper end of the vertical plate, an included angle is formed between the bearing inclined plate and the oil cylinder piston end sealing plate and is positioned above the oil cylinder piston end sealing plate, the supporting plate groove hanging plate is connected with the lower end of the vertical plate and is positioned at the other side of the vertical plate for installing the bearing inclined plate and the oil cylinder piston end sealing plate, a raised line parallel to the vertical plate is arranged on the supporting plate groove hanging plate, a hanging groove for bearing the supporting plate is formed between the raised line and the vertical plate, the free end of a piston rod of the supporting leg oil cylinder is fixedly installed on the lower surface of,
the jacking mechanism is provided with four jacking mechanisms, piston rods of supporting leg oil cylinders of the four jacking mechanisms are respectively inserted into supporting leg oil cylinder through holes in the four jacking mechanism mounting plates, and the jacking mechanism mounting plates are located between the oil cylinder piston head plate and the front end cover of the supporting leg oil cylinder body.
Furthermore, the upper surfaces of the bearing inclined plates of the four jacking mechanisms face the bearing main tunneling machine, and when the high-position driven wheel assembly, the low-position driven wheel assembly and the driving wheel assembly are reversed, the upper surfaces of the bearing inclined plates directly cling to the outer surface of the main tunneling machine barrel and jack up the main tunneling machine.
Furthermore, the low-position driven wheel assembly further comprises a guide compression cylinder, a disc spring, a joint bearing, a nylon wheel train, a threaded pin and a short bearing composite rod, wherein the guide compression cylinder is fixedly connected with the lower end of the mounting hoop seat, the upper end of the guide compression cylinder is closed, the lower end of the guide compression cylinder is open, a guide hole is formed in the inner surface of an upper end closing plate of the guide compression cylinder, the upper end of the short bearing composite rod is inserted into the guide hole of the guide compression cylinder and has a gap with the top of the guide hole, an annular step surface is arranged on the short bearing composite rod, the disc spring is sleeved on the short bearing composite rod and is positioned between the inner surface of the upper end closing plate of the guide compression cylinder and the step surface of the short bearing composite rod, a through groove along the length direction of the rod is formed in the upper part of the short bearing composite rod, the compressed threaded pin penetrates through the through groove in the upper part of the short bearing composite rod and is screwed on the wall of the guide compression, the lower end of the short bearing composite rod is connected with the nylon wheel train through the joint bearing.
Furthermore, still include from driving wheel steering cylinder, follow driving wheel steering mechanism and steering push rod, the nylon train include nylon wheel and the nylon wheel mounting bracket of being connected with joint bearing, nylon wheel mounting bracket on inserted steering push rod, follow driving wheel steering cylinder promote steering push rod through following driving wheel steering mechanism and remove to stir the nylon wheel system and rotate around short load-carrying composite rod axis.
Furthermore, the vertical hand-held guide wheel device further comprises a fixed seat and a vertical hand-held guide wheel, wherein the fixed seat is fixedly arranged on keels at the two vertical ends of the frame of the bearing rack, one end of a wheel shaft of the vertical hand-held guide wheel is hinged with the fixed seat, when the bearing rack longitudinally advances, the vertical hand-held guide wheel is put down, the axis of the vertical hand-held guide wheel is vertical to the ground, and the vertical hand-held guide wheel is matched with the side wall of the vertical movement guide groove which is formed in the ground to roll.
Furthermore, the transverse guide mechanism comprises a transverse guide wheel, when the bearing rack transversely advances, the transverse guide wheel is put down, the axis of the transverse guide wheel is vertical to the ground, and the transverse guide wheel is matched with the side wall of the transverse guide groove formed in the ground to roll.
Furthermore, the transverse guide mechanism further comprises a lifting oil cylinder, the free end of a piston rod of the lifting oil cylinder is connected with the transverse guide wheel, and the lifting oil cylinder can prop the transverse guide wheel on the ground to play a braking role.
Furthermore, the excavator further comprises a stop block socket, a stop block and a main engine oil cylinder, wherein the stop block socket is arranged on an end cross beam of the first section of the frame, which is positioned at the outer end of the whole frame, the stop block is used for stopping the main engine of the excavator from longitudinally sliding on the bearing rack, a cylinder body of the main engine oil cylinder is arranged on an end cross beam of the tail section of the frame, which is positioned at the outer end of the whole frame, and a piston of the main engine oil cylinder is arranged at the first section in a direction to push out the bearing rack from the main engine of the excavator.
Furthermore, the protective pad comprises a plurality of protective pad discs arranged below the frame, each protective pad disc comprises a protective pad seat and a disc body, the protective pad seats are fixedly arranged on the frame, the disc bodies are connected with the protective pad seats through screws, the distance between each disc body and the ground can be adjusted by rotating the disc bodies, and when the load is too large, the disc bodies touch the ground to protect the high-position driven wheel assemblies, the low-position driven wheel assemblies and the driving wheel assemblies and prevent the damage to the road surface.
The invention has the beneficial effects that:
1) the bearing rack of the shifting device vehicle body is a first section, a middle section and a tail section which can independently run, each section is formed by connecting a left part and a right part, the three sections can be combined and separated, and a main machine of the development machine can slide on the whole rack without barriers; the front end and the rear end of the excavator are provided with the stoppers so as to prevent the excavator main machine from sliding when going up and down;
2) four rows of wheel trains are arranged below the rack, 2 rows are arranged on the left and right, 8 groups of driving wheel assemblies provided with hydraulic traveling motors are symmetrically arranged on the left and right outer sides of the 2 rows, 4 groups are arranged in the middle section, and 2 groups are arranged at the head section and the tail section respectively; a set of driven wheel assemblies 56, all in each column;
3) 4 groups of jacking mechanisms with supporting leg oil cylinders are arranged, the supporting leg oil cylinders firstly extend out to touch the ground and then reversely push the jacking mechanisms to lift the main machine of the tunneling machine, and then the supporting rack is also carried to lift, so that all driven wheels are not stressed. After the gear train is reversed, the jacking mechanism is reset, and the gear train connected with the bearing rack lands firstly, and the main machine of the tunneling machine is ballasted to the supporting plate of the bearing rack, so that the impact of the main machine of the tunneling machine on the bearing rack and the gear train is greatly reduced;
4) the rack is also provided with a driven wheel steering mechanism and driven wheel steering oil cylinders, each section is provided with 2 groups, and the steering mechanism is pushed by the steering oil cylinders; all the driven wheels collectively complete 90-degree steering of a driven wheel train through the action of 6 groups of driven wheel steering oil cylinders under the action of 4 groups of jacking mechanisms;
5) two ends of the middle position of the rack in the transverse direction and the longitudinal direction are respectively provided with 2 groups of guide mechanisms, the guide wheels are pushed into the ground guide groove by the transverse guide mechanisms through a hydraulic oil cylinder, and the 2 guide wheels are also used as friction wheels, so that the friction force of the guide wheels to the ground is enhanced by changing the hydraulic pressure, and the brake is carried out on a slope or the brake is carried out quickly on a flat road; the guide mechanisms at two ends of the longitudinal middle position are hung manually and act in the positive line ground guide groove; the transverse guide mechanism is only used when the development machine transversely shifts and a positive line is empty to push or is braked when the development machine passes a station;
6) each group of driving wheel assemblies is provided with rotating torque by a motor, a pressurizing oil cylinder on the upper part of each group of driving wheel assemblies applies constant pressure to each driving wheel externally coated with polyurethane to generate enough friction force as the driving force of the displacement device, the driving wheel can adapt to the unevenness of the ground, and a steering motor on the upper part of each pressurizing oil cylinder is used for realizing the 90-degree steering of the corresponding driving wheel;
7) the upper part of the wheel train in each group of driven wheel components is provided with a joint bearing and a disc spring, the joint bearing enables the wheel train to freely rotate around the vertical direction, and the wheel train can swing up and down at a certain angle in the horizontal direction so as to adapt to the unevenness of the ground; the disc spring is used for balancing the influence of serious mass unevenness of the main machine of the tunneling machine on extremely uneven pressure generated by each driven wheel component, and can adapt to certain ground unevenness to prevent the wheels from being suspended or pressed too much;
8) the frame of the bearing rack is provided with a support plate made of T-shaped steel for bearing and balancing the main machine of the tunneling machine, the bending resistance and the deformation resistance of the T-shaped steel are high, and the main machine of the tunneling machine can not directly contact with the frame to cause the deformation of the frame;
9) the electric control box and the hydraulic unit are integrated into a whole by the electro-hydraulic operating platform trolley, a power supply, a pressure oil source, a control circuit and the like are provided for the whole shifting device, the electric control box is hung on the side edge of the tail part of the rack during transverse moving, and the electric control box is hung on the tail part of the rack during positive line air pushing and is pulled by the whole shifting device to move; the electric control and hydraulic control operation panel is arranged on the panel at the same position, and a worker can operate and control the trolley on the panel;
10) the transitional connection of the hydraulic pipeline between the first section and the middle section of the bearing rack and the transitional connection of the hydraulic pipeline between the middle section and the tail section of the bearing rack and the transitional connection of the electric control circuit adopt quick-insertion joints, so that the whole system can be installed quickly.
Drawings
FIG. 1 is a cross-sectional structural view of a bearing and shifting device of the heading machine;
FIG. 2 is a schematic perspective view of a bearing and shifting device of the heading machine;
FIG. 3 is a perspective view of a lower driven wheel assembly of the roadheader carrying the shifting device;
FIG. 4 is a perspective view of the high driven wheel assembly of the roadheader carrying the shifting device;
figure 5 is a perspective view of a drive wheel assembly of the heading machine carrying a displacement device;
fig. 6 is a perspective view of a jacking mechanism of the carrying and shifting device of the heading machine;
FIG. 7 is a schematic perspective view of a trolley of an electro-hydraulic operating platform of the carrying and shifting device of the heading machine;
in the figure, the position of the upper end of the main shaft,
a joint between the first section and the middle section, b joint between the middle section and the tail section, c steering push rod jack, d traction rod,
1 keel, 2 end cross beams, 3 longitudinal beams, 4 longitudinal supporting plates, 5 middle cross beams, 6 force bearing circular tubes, 7 illuminating lamps, 8 stopper sockets, 9 fixing seats, 10 longitudinal hand-held guide wheels, 11 cameras, 12 mounting seats, 13 high-position driven wheel assemblies, 14 low-position driven wheel assemblies, 15 driving wheel assemblies, 16 transverse guide mechanisms, 17 jacking mechanisms, 18 pad discs, 19 driven wheel steering cylinders, 20 driven wheel steering mechanisms, 21 steering push rods, 22 unloading main engine cylinders, 23 mounting hoop seats, 24 guiding and pressing cylinders, 25 disc springs, 26 knuckle bearings, 27 nylon wheel trains, 28 threaded pins, 29 short force bearing composite rods, 30 mounting plates, 31 long force bearing composite rods, 32 hydraulic traveling motors, 33 angle encoders, 34 steering motors, 35 pressurizing cylinders, 36 motor mounting frames, 37 composite steel wheels, 38 jacking frames, 39 supporting leg cylinders, 40 hydraulic units, 41 integrated valve groups, The device comprises a 42 air cooler, a 43 hydraulic control operation panel, a 44 electric power cabinet, a 45 electric control operation panel, 46 bases and 47 carrying trolley wheels.
Detailed Description
The following structural description and the accompanying drawings further describe the specific technical scheme of the invention.
As shown in fig. 1-2, the bearing and shifting device of the heading machine of the invention comprises a bearing rack, a high driven wheel assembly 13, a low driven wheel assembly 14, a driving wheel assembly 15 and a jacking mechanism.
The bearing rack comprises a frame, a mounting seat 12 and a jacking mechanism mounting plate, wherein the frame comprises a keel 1, two longitudinal beams 3, a plurality of cross beams, two longitudinal bearing circular tubes 6 and two longitudinal support plates 4, the keel 1 is positioned on a longitudinal symmetrical central line of the bearing rack, the upper edge face of each cross beam is provided with a radian matched with the outer surface of a main barrel body of the tunneling machine, the two longitudinal beams 3, the two longitudinal bearing circular tubes 6 and the two longitudinal support plates 4 are sequentially and symmetrically arranged on two sides of the keel 1 from inside to outside, the keel 1, the two longitudinal beams 3, the two longitudinal bearing circular tubes 6 and the two longitudinal support plates 4 are vertically installed with the plurality of cross beams to form a frame structure, the longitudinal support plates 4 are made of T-shaped steel, the upper surfaces of wing plates of the T-shaped steel are rectangular strip-shaped planes, and web plates of the T-shaped steel are welded. The plane of this rectangular bar is higher than the space plane that many root length roof beam upper edge face formed, when bearing the main frame of entry driving machine, the plane of this rectangular bar directly with the main frame barrel of entry driving machine surface contact, mount pad 12 have the polylith, mount pad 12 fixed mounting is between two tip that lie in fossil fragments 1 with one side of adjacent crossbeam for the high-order driven wheel subassembly 13 or drive wheel subassembly 15 of installation, the climbing mechanism mounting panel have four, install the tip at the vertical both sides of frame two bisymmetries, it has landing leg hydro-cylinder through-hole to open on every climbing mechanism mounting panel.
The frame of the bearing rack is divided into a first section, a middle section and a tail section which are respectively manufactured and enter the tunnel to form the frame of the bearing rack. The cross beam of each of the first section, the middle section and the tail section is divided into two end cross beams 2 and a plurality of middle cross beams 5, and the end cross beams 2 at one ends of the first section and the tail section are respectively butted with the end cross beams 2 at two ends of the middle section and fixed by bolts.
The low-position driven wheel assembly 14 comprises a plurality of mounting hoop seats 23, and the low-position driven wheel assemblies 14 are symmetrically mounted on the two longitudinal force bearing circular tubes 6 in pairs through the respective mounting hoop seats 23.
As shown in fig. 3, the low-level driven wheel assembly 14 further includes a guiding and pressing cylinder 24, a disc spring 25, a joint bearing 26, a nylon wheel train 27, a threaded pin 28 and a short force-bearing composite rod 29, the guiding and pressing cylinder 24 is fixedly connected with the lower end of the mounting hoop base 23, the upper end of the guiding and pressing cylinder 24 is closed, the lower end of the guiding and pressing cylinder 24 is open, a guiding hole is formed on the inner surface of the upper end closing plate of the guiding and pressing cylinder 24, the upper end of the short force-bearing composite rod 29 is inserted into the guiding hole of the guiding and pressing cylinder 24 and has a gap with the top of the guiding hole, the short force-bearing composite rod 29 has an annular step surface, the disc spring 25 is sleeved on the short force-bearing composite rod 29 and is positioned between the inner surface of the upper end closing plate of the guiding and pressing cylinder 24 and the step surface of the short force-bearing composite rod 29, the upper portion of the short force-bearing composite rod 29 has a through groove along the length direction of the rod, the threaded pin 28 passes through the upper portion of the short force-bearing, the lower end of the short bearing composite rod 29 is connected with a nylon wheel train 27 through the joint bearing 26. The nylon wheel train 27 can freely rotate around the knuckle bearing 26 on the ground, and can also swing up and down by +/-5 degrees, so that the nylon wheel train 27 adapts to unevenness of the ground. After the bearing platform is loaded, the guide compression cylinder 24 is pressed down, the disc spring 25 is deformed, the guide compression cylinder 24 moves down, and the force bearing composite rod 29 transmits the pressure of the disc spring 25 to the nylon wheel train 27.
As shown in fig. 4, the plurality of high driven wheel assemblies 13 are arranged on the frame of the bearing rack in a pairwise symmetrical manner through the mounting seats 12. The structure of the high driven wheel assembly 13 is similar to that of the low driven wheel assembly 14, and the difference is that firstly, the guiding compression cylinder of the high driven wheel assembly 13 is installed on the installation base 12 through an installation plate 30; secondly, the high driven wheel component 13 is provided with a long bearing composite rod 31, and the length of the long bearing composite rod is longer than that of the short bearing composite rod 29 of the low driven wheel component 14. The nylon wheel train of the high driven wheel assembly 13 can also rotate and change direction under the action of the driven wheel steering mechanism 20.
As shown in FIG. 5, a plurality of driving wheel assemblies 15 are arranged on the frame of the bearing rack in a pairwise symmetrical manner through the mounting seats 12. The driving wheel assembly 15 comprises a hydraulic walking motor 32, an angle encoder 33, a steering motor 34, a pressurizing oil cylinder 35, a motor mounting rack 36 and a composite steel wheel 37, the walking motor 32 and a speed reducer are connected into a whole and are connected to the motor mounting rack 36 together through screws, the composite steel wheel 37 coated with polyurethane is also connected to the speed reducer corresponding to the walking motor 32 through screws at a speed reduction ratio of 1:37, a lower end joint of a piston of the pressurizing oil cylinder 35 is inserted into a rectangular groove at the upper part of the motor mounting rack 36 in a rectangular shape and is fixed through a threaded pin, a hole with two key grooves at the upper end of the piston is inserted into a cylinder with two key grooves at the front end of the steering motor 34 and is simultaneously embedded into two flat keys, an outer cylinder of the steering motor 34 is fixed on a flat plate at the top end of the pressurizing oil cylinder 35 through screws, the whole driving wheel assembly 15 is connected to the mounting plate 12, reflecting its angle of rotation. The piston in the pressurization hydro-cylinder 35 can free rotation under the effect of steering motor 34, the piston can also reciprocate under hydraulic pressure effect, at this moment, keyway and interior cylindrical surface in the hole of piston upper portion slide along two parallel keys and outer cylindrical surface, drive walking motor 32, motor mounting bracket 36 and compound steel wheel 37 reciprocate maximum distance 30mm, can make compound steel wheel 37 adapt to the road surface not flat, keep invariable pressure to ground simultaneously, prevent the idle running of the unsettled motor of wheel, make the load of walking motor 32 more stable and do not influence whole hydraulic system's normal operating.
As shown in fig. 6, the jacking mechanism comprises a jacking frame 38 and a supporting leg cylinder 39, the jacking frame 38 comprises a supporting plate slot hanging plate, a vertical plate, a bearing inclined plate and a cylinder piston head plate, the oil cylinder piston end sealing plate is vertically connected with the lower end of the vertical plate, one end of the bearing inclined plate is connected with the upper end of the vertical plate, an included angle is formed between the bearing inclined plate and the oil cylinder piston end sealing plate and is positioned above the oil cylinder piston end sealing plate, the support plate groove hanging plate is connected with the lower end of the vertical plate and is positioned at the other side of the vertical plate on which the bearing inclined plate and the oil cylinder piston head plate are arranged, a raised line parallel to the vertical plate is arranged on the support plate groove hanging plate, a hanging groove for bearing the supporting plate 4 is formed between the raised line and the vertical plate, the free end of a piston rod of the supporting leg oil cylinder 39 is fixedly installed on the lower surface of the oil cylinder piston head plate, and the diameter of the piston rod of the supporting leg oil cylinder 39 is smaller than that of a supporting leg oil cylinder through hole in the jacking mechanism mounting plate.
The jacking mechanisms are four, piston rods of the supporting leg oil cylinders 39 of the four jacking mechanisms are respectively inserted into supporting leg oil cylinder through holes in the four jacking mechanism mounting plates, and the jacking mechanism mounting plates are located between the oil cylinder piston head plate and the front end cover of the cylinder body of the supporting leg oil cylinder 39.
The upper surfaces of the bearing inclined plates of the four jacking mechanism jacking frames 38 face the bearing main engine, and when the high-position driven wheel assembly 13, the low-position driven wheel assembly 14 and the driving wheel assembly 15 are reversed, the upper surfaces of the bearing inclined plates directly cling to the outer surface of the main engine barrel body of the tunneling machine and jack up the main engine of the tunneling machine. The specific process of the reversing is that the supporting leg oil cylinder 39 of the jacking mechanism hung on the jacking mechanism mounting plate is fed with oil, so that the bottom of the cylinder body of the supporting leg oil cylinder 39 is propped against the ground, the oil is continuously fed, and the piston rod of the supporting leg oil cylinder 39 is upward. The bearing inclined plate jacks up the main machine of the development machine, then the hanging groove of the hanging groove plate of the supporting plate hangs the supporting plate 4, and the whole bearing rack is lifted up to change the direction of the high driven wheel assembly 13, the low driven wheel assembly 14 and the driving wheel assembly 15.
The bearing and shifting device of the heading machine of one embodiment of the invention further comprises a fixed seat 9, a longitudinal portable guide wheel 10, a transverse guide mechanism 16, a stop socket 9, a stop, a main unloading oil cylinder 22 and a plurality of pad disks 18 arranged below the frame.
The fixing seats 9 are fixedly arranged on keels 1 at the two longitudinal ends of a frame of the bearing rack, one end of a wheel shaft of each longitudinal hand-held guide wheel 10 is hinged to the fixing seat 9, when the bearing rack longitudinally advances, the longitudinal hand-held guide wheels 10 are placed down, the axis of each longitudinal hand-held guide wheel 10 is perpendicular to the ground, and the longitudinal hand-held guide wheels 10 roll in a matched mode with the side walls of longitudinal moving guide grooves formed in the ground.
The transverse guide mechanism comprises a transverse guide wheel, when the bearing rack transversely advances, the transverse guide wheel is put down, the axis of the transverse guide wheel is vertical to the ground, and the transverse guide wheel is matched with the side wall of a transverse guide groove formed in the ground to roll. The transverse guide mechanism 16 further comprises a lifting oil cylinder, the free end of a piston rod of the lifting oil cylinder is connected with the transverse guide wheel, and the lifting oil cylinder can prop the transverse guide wheel on the ground to play a role in braking.
The stop block socket 9 is arranged on the end cross beam 2 of the first section of the frame, which is positioned at the outer end of the whole frame, the stop block socket 9 is inserted to stop the main engine of the development machine from longitudinally sliding on the bearing rack, the cylinder body of the host unloading cylinder 22 is arranged on the end cross beam 2 of the tail section of the frame, which is positioned at the outer end of the whole frame, and the piston of the host unloading cylinder 22 points to the first section and is used for pushing the main engine of the development machine out of the bearing rack.
The protection pad disc 18 comprises a protection pad seat and a disc body, the protection pad seat is fixedly installed on the framework, the disc body is connected with the protection pad seat through a screw, the disc body can be rotated to adjust the distance between the disc body and the ground, when the load is overlarge, the disc body contacts with the ground to protect the high-level driven wheel assembly 13, the low-level driven wheel assembly 14 and the driving wheel assembly 15, and the road surface is prevented from being damaged.
As shown in fig. 7, the bearing and shifting device of the heading machine further comprises an electrohydraulic operating platform trolley. The trolley of the electrohydraulic operation platform comprises a hydraulic unit 40, an integrated valve group 41, an air cooler 42, a hydraulic control operation panel 43, an electric power cabinet 44, an electric control operation panel 45, a platform base 46, a carrying trolley 47, hydraulic pipelines (including rubber pipes) and pipeline accessories (including pressure gauges, pipe joints, quick joints and the like), cables, fasteners and the like. The hydraulic unit 40 mainly comprises a variable plunger pump, a vane pump, a motor, a coupling, a shock absorber, an oil absorption filter, an oil return filter, an energy accumulator, a hydraulic oil tank, and oil tank accessories such as a heater, a temperature controller, a liquid level meter and the like; the integrated valve group 41 integrates a plurality of control valves such as butterfly valves, cartridge valves, pressure reducing valves, overflow valves, proportional reversing valves, electromagnetic reversing valves, electro-hydraulic reversing valves, sequence valves, plug-in electromagnetic check valves, flow distributing and collecting valves, bidirectional hydraulic locks and the like; the hydraulic control operation panel 43 integrates a pressure gauge, a partial pressure reducing valve, a speed regulating valve, a manual reversing valve, a throttle valve, and the like. The electric power cabinet 44 comprises a three-phase power supply, an air switch, an electric control element, a shock absorber, a stuffing box and the like; the electric control operation panel 45 includes a PLC programmable logic controller, a touch screen, an alarm, an indicator light, and the like. The above components are collected on the platform base 46, the carrying trolley 47 is connected with the platform base 46 through screws, and the draw bar on the back of the carrying trolley 47 is connected with the side face or the tail end of the vehicle body through a pin. The transition position of the hydraulic pipeline and the electric control circuit between the sections adopts the quick joint which is easy to insert and disassemble, so that the quick disassembly and connection of the vehicle body are facilitated.
The hydraulic part on the trolley of the electrohydraulic operation platform provides hydraulic oil with pressure for power executing elements on the trolley body, namely five different hydraulic oil cylinders with the total number of 22, eight hydraulic walking motors and eight steering motors, and the electric control part provides a power supply and a control power supply for the whole device; two operation panels in the operation table can be used for operators to adjust hydraulic control and electric control parameters according to operation programs, and stable, reliable and safe operation of the whole device is realized.
In the specific embodiment of the invention, the accessory and the bearing rack can be connected and disconnected, and the accessory mainly comprises an illuminating lamp 7, two longitudinal hand-held guide wheels 10, a camera 11, twenty-two high-position driven wheel assemblies 13, thirty-four low-position driven wheel assemblies 14, eight driving wheel assemblies 15, two transverse guide mechanisms 16, four jacking mechanisms 17, fourteen pad circular discs 18, six driven wheel steering oil cylinders 19, six driven wheel steering mechanisms 20, fifty-six steering push rods 21 and two main unloading oil cylinders 22.
The first section and the tail section of the bearing rack are respectively provided with two driving wheel assemblies 15, the middle section is provided with four driving wheel assemblies 15, two transverse guide mechanisms 16 are arranged at the position close to the middle of the middle section, two jacking mechanisms 17 are respectively arranged at the middle section and the first section and are arranged at the corresponding positions where the mass distribution of the main machine of the heading machine is concentrated, and six driven wheel steering mechanisms 20 are respectively arranged at the left side and the right side of the lower part of the three sections. The lengths of the disc springs in the high-position driven wheel assembly 13 and the low-position driven wheel assembly 14 are different, namely the allowable maximum deformation is different, the rigidity of the disc spring at the first section of the bearing rack is higher than that of the disc spring at the tail section, so that all the high-position driven wheel assembly 13 and the low-position driven wheel assembly 14 are stressed and stressed uniformly, and meanwhile, the vehicle body is flat after bearing, and the phenomena that some gear trains are stressed too much to damage wheels and the ground and the vehicle body is tilted forwards and backwards or inclined leftwards and rightwards and twisted due to extremely non-uniform weight distribution are avoided.
Although the present invention has been described in terms of the preferred embodiment, it is not intended that the invention be limited to the embodiment. Any equivalent changes or modifications made without departing from the spirit and scope of the present invention also belong to the protection scope of the present invention. The scope of the invention should therefore be determined with reference to the appended claims.
Claims (9)
1. A bearing and shifting device of a heading machine comprises a bearing rack, a high-position driven wheel assembly (13), a low-position driven wheel assembly (14), a driving wheel assembly (15) and a jacking mechanism, and is characterized in that,
the bearing rack comprises a frame, a mounting seat (12) and a jacking mechanism mounting plate, wherein the frame comprises a keel (1), two longitudinal beams (3), a plurality of cross beams, two longitudinal bearing circular tubes (6) and two longitudinal support plates (4), the keel (1) is positioned on a longitudinal symmetrical central line of the bearing rack, the upper edge surface of each cross beam is provided with a radian matched with the outer surface of a main machine barrel of the tunneling machine, the two longitudinal beams (3), the two longitudinal bearing circular tubes (6) and the two longitudinal support plates (4) are sequentially and symmetrically arranged on two sides of the keel (1) from inside to outside, the keel (1), the two longitudinal beams (3), the two longitudinal bearing circular tubes (6) and the two longitudinal support plates (4) are vertically arranged with the plurality of cross beams to form a frame structure, the longitudinal support plates (4) are made of T-shaped steel, and the upper surfaces of wing plates of the T-shaped steel are rectangular strip-shaped planes, the rectangular strip-shaped plane is higher than a space plane formed by the upper edge surfaces of the beams, when the main machine of the development machine is borne, the rectangular strip-shaped plane is directly contacted with the outer surface of the main machine barrel of the development machine, the mounting seat (12) is provided with a plurality of blocks, the mounting seat (12) is fixedly arranged between two end parts of two adjacent beams, the two end parts of the two adjacent beams are positioned at the same side of the keel (1) and used for mounting a high-position driven wheel component (13) or a driving wheel component (15), the four jacking mechanism mounting plates are symmetrically arranged at the end parts of the two longitudinal sides of the framework, each jacking mechanism mounting plate is provided with a supporting leg oil cylinder through hole,
the frame of the bearing rack is divided into a first section, a middle section and a tail section, the cross beam of each of the first section, the middle section and the tail section is divided into two end cross beams (2) and a plurality of middle cross beams (5), the end cross beams (2) at one end of the first section and the tail section are respectively butted with the end cross beams (2) at two ends of the middle section and are fixed by bolts,
the low-position driven wheel assembly (14) comprises a plurality of mounting hoop seats (23), the low-position driven wheel assemblies (14) are symmetrically mounted on two longitudinal bearing circular tubes (6) in pairs through the respective mounting hoop seats (23),
a plurality of high driven wheel assemblies (13) are arranged on the frame of the bearing rack in a pairwise symmetrical manner through the mounting seats (12),
a plurality of driving wheel assemblies (15) are arranged on the frame of the bearing rack in a pairwise symmetrical manner through the mounting seats (12),
the jacking mechanism comprises a jacking frame (38) and a supporting leg oil cylinder (39), wherein the jacking frame (38) comprises a supporting plate groove hanging plate, a vertical plate, a bearing inclined plate and an oil cylinder piston head plate, the oil cylinder piston head plate is vertically connected with the lower end of the vertical plate, one end of the bearing inclined plate is connected with the upper end of the vertical plate, an included angle is formed between the bearing inclined plate and the oil cylinder piston head plate and is positioned above the oil cylinder piston head plate, the supporting plate groove hanging plate is connected with the lower end of the vertical plate and is positioned at the other side of the vertical plate for installing the bearing inclined plate and the oil cylinder piston head plate, a raised line parallel to the vertical plate is arranged on the supporting plate groove hanging plate, a hanging groove for bearing a supporting plate (4) is formed between the raised line and the vertical plate, the free end of a piston rod of the supporting leg oil cylinder (39) is fixedly installed on the lower surface of the oil cylinder head plate, and,
the jacking mechanism is provided with four jacking mechanisms, piston rods of supporting leg oil cylinders (39) of the four jacking mechanisms are respectively inserted into supporting leg oil cylinder through holes in four jacking mechanism mounting plates, and the jacking mechanism mounting plates are located between an oil cylinder piston head plate and a supporting leg oil cylinder (39) cylinder body front end cover.
2. A carrying and displacing device of a heading machine according to claim 1 wherein the upper surfaces of the carrying inclined plates of the four jacking frames (38) are all directed towards the carrying heading machine main body, and when the high driven wheel assembly (13), the low driven wheel assembly (14) and the driving wheel assembly (15) are reversed, the upper surfaces of the carrying inclined plates directly abut against the outer surface of the main body of the heading machine and jack the main body of the heading machine.
3. The bearing and shifting device of the heading machine according to claim 1, wherein the low-level driven wheel assembly (14) further comprises a guide and pressure-bearing cylinder (24), a disc spring (25), a joint bearing (26), a nylon wheel train (27), a threaded pin (28) and a short force-bearing composite rod (29), the guide and pressure-bearing cylinder (24) is fixedly connected with the lower end of the mounting hoop seat (23), the upper end of the guide and pressure-bearing cylinder (24) is closed and the lower end is opened, a guide hole is formed in the inner surface of the upper end closing plate of the guide and pressure-bearing cylinder (24), the upper end of the short force-bearing composite rod (29) is inserted into the guide hole of the guide and pressure-bearing cylinder (24) and has a gap with the top of the guide hole, an annular step surface is arranged on the short force-bearing composite rod (29), the disc spring (25) is sleeved on the short force-bearing composite rod (29) and is positioned between the inner surface of the upper end closing plate of the guide and the short force-bearing composite rod (29), the upper part of the short bearing composite rod (29) is provided with a through groove along the length direction of the rod, the threaded pin (28) passes through the through groove on the upper part of the short bearing composite rod (29) and is screwed on the wall of the guide compression cylinder (24), and the lower end of the short bearing composite rod (29) is connected with a nylon wheel train (27) through the joint bearing (26).
4. A bearing and shifting device of a heading machine according to claim 3, further comprising a driven wheel steering cylinder (19), a driven wheel steering mechanism (20) and a steering push rod (21), wherein the nylon wheel train (27) comprises nylon wheels and a nylon wheel mounting bracket connected with the joint bearing (26), the steering push rod (21) is inserted into the nylon wheel mounting bracket, and the driven wheel steering cylinder (19) pushes the steering push rod (21) to move through the driven wheel steering mechanism (20), so that the nylon wheel train (27) is stirred to rotate around the axis of the short bearing composite rod (29).
5. The bearing and shifting device of the heading machine according to claim 1, further comprising a fixed seat (9) and a longitudinal hand-held guide wheel (10), wherein the fixed seat (9) is fixedly arranged on the keels (1) at the two longitudinal ends of the frame of the bearing rack, one end of the wheel shaft of the longitudinal hand-held guide wheel (10) is hinged with the fixed seat (9), when the bearing rack longitudinally advances, the longitudinal hand-held guide wheel (10) is laid down, the axis of the longitudinal hand-held guide wheel (10) is vertical to the ground, and the longitudinal hand-held guide wheel (10) is matched with the side wall of the longitudinal moving guide groove which is already opened on the ground to roll.
6. A carriage shifting apparatus of a heading machine as claimed in claim 1, further comprising a lateral guide mechanism (16) including lateral guide wheels which are lowered with their axes perpendicular to the ground when the carriage travels laterally, and which roll in cooperation with the side walls of the lateral guide grooves formed in the ground.
7. A load-bearing displacement device of a heading machine according to claim 6 wherein the lateral guide mechanism (16) further comprises a lift cylinder having a free end of a piston rod connected to the lateral guide wheel, the lift cylinder being capable of supporting the lateral guide wheel against the ground to act as a brake.
8. A carrying and shifting device of a heading machine according to claim 1, further comprising a stopper socket (9), a stopper and a main body unloading cylinder (22), wherein the stopper socket (9) is mounted on the end beam (2) of the first section of the frame at the outer end of the whole frame, the stopper is inserted into the stopper socket (9) and used for preventing the main body of the heading machine from longitudinally sliding on the carrying platform, the cylinder body of the main body unloading cylinder (22) is mounted on the end beam (2) of the last section of the frame at the outer end of the whole frame, and the piston of the main body unloading cylinder (22) points to the first section and is used for pushing the main body of the heading machine out of the carrying platform.
9. The bearing and shifting device of a heading machine according to claim 1, further comprising a plurality of pad disks (18) mounted under the frame, wherein the pad disks (18) comprise a pad holder and a disk body, the pad holder is fixedly mounted on the frame, the disk body is connected with the pad holder through a screw, the distance between the disk body and the ground can be adjusted by rotating the disk body, and when the load is too large, the disk body touchdown protects the high driven wheel assembly (13), the low driven wheel assembly (14) and the driving wheel assembly (15) and prevents damage to the road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911226832.4A CN111153130A (en) | 2019-12-04 | 2019-12-04 | Bearing and shifting device of heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911226832.4A CN111153130A (en) | 2019-12-04 | 2019-12-04 | Bearing and shifting device of heading machine |
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| CN111153130A true CN111153130A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911226832.4A Pending CN111153130A (en) | 2019-12-04 | 2019-12-04 | Bearing and shifting device of heading machine |
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| CN208105075U (en) * | 2018-04-25 | 2018-11-16 | 山东恒堃机械有限公司 | A kind of mobile formwork moving trolley |
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| CN208792174U (en) * | 2018-07-08 | 2019-04-26 | 中铁十一局集团汉江重工有限公司 | A kind of Bridge Erector |
| CN212981462U (en) * | 2019-12-04 | 2021-04-16 | 中国船舶重工集团公司第七0四研究所 | Bearing and shifting device of heading machine |
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2019
- 2019-12-04 CN CN201911226832.4A patent/CN111153130A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208105075U (en) * | 2018-04-25 | 2018-11-16 | 山东恒堃机械有限公司 | A kind of mobile formwork moving trolley |
| CN208393365U (en) * | 2018-05-15 | 2019-01-18 | 安徽兴宇轨道装备有限公司 | A kind of change rail engineering truck |
| CN208792174U (en) * | 2018-07-08 | 2019-04-26 | 中铁十一局集团汉江重工有限公司 | A kind of Bridge Erector |
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