CN216128898U - Self-walking belt type transfer vehicle - Google Patents

Abstract

The utility model provides a from belt conveyor that walks carries, belongs to material conveying equipment technical field in the pit, solves the supporting equipment fixing that causes of elevating conveyor, band conveyer combination complicated, can not realize the technical problem of the walking of turning in succession, and the solution is: the plurality of middle conveying units are connected in series through a transitional connecting frame, the middle conveying unit at the head end is connected with the machine head belt frame, and the middle conveying unit at the tail end is connected with the machine tail belt frame; the machine head belt frame, the middle driven belt frame, the middle driving belt frame and the machine tail belt frame respectively comprise a main conveying device, a trough and a travelling mechanism, the trough is arranged above the main conveying device, and the travelling mechanism comprises a driving travelling device, a driven travelling device and a turning travelling device. The utility model breaks through the limitation of linear conveying, can realize spatial curve arrangement of a conveying route, has high operation efficiency, can adapt to the topographic conditions and environmental requirements of underground roadways, simplifies the arrangement of conveying equipment and reduces the installation and operation cost of a conveyor.

Description

Self-walking belt type transfer vehicle

Technical Field

The utility model belongs to the technical field of underground material conveying equipment, and particularly relates to a self-walking belt type transfer vehicle.

Background

As the environment is increasingly emphasized, a novel filling coal mining process, namely, a full negative pressure continuous mining and continuous fully arranging and changing 'three lower' coal mining method, is rapidly popularized and applied, and adopts long wall arrangement, short wall mining, digging, mining and filling parallel continuous operation; according to the process method, the goaf roadway is backfilled synchronously after coal mining, so that goaf collapse is effectively avoided, the original ecological environment is protected from being damaged, and the original building and facilities are not affected.

The 'third lower' filling coal mining process adopts short-arm mining, the length of a branch roadway working face is about 80m, the width is 5m, and the branch roadways are more; the rapid tunneling process is mainly matched with a tunneling machine, transshipment equipment and transportation equipment to complete the falling, loading, transferring and operating industries; all equipment matched with the branch roadway working face can be efficiently, continuously, synchronously and quickly transferred.

Firstly, along with the rapid tunneling of the tunneling machine, the loading equipment needs to follow up synchronously, the mined coal is continuously conveyed and transferred to the crossheading roadway and is transferred to the main mine transportation system by the fixed conveying equipment. The branch roadways and the crossheading roadway are arranged at an angle of 90 degrees, after the tunneling operation of the previous branch roadway is completed, the tunneling machine is transferred to the next branch roadway for operation, and the transfer equipment is also quickly transferred to the designated position of the next branch roadway for next cycle operation. The matched transshipment equipment needs 90-degree turning, is flexibly arranged and realizes continuous conveying; the automatic mining machine needs to walk autonomously, so that the quick transfer is realized without influencing the progress of the follow-up mining operation.

The transfer equipment of the existing branch roadway operation surface is matched with a transfer conveyor and a belt conveyor, and can not turn to walk and can not be transferred quickly through lap joint matching.

Similarly, in the short-wall filling process, the subsequent extraction operation needs to be matched with a self-walking belt type transfer car after the continuous mining machine, and the mined coal is transferred to the crossheading roadway and transferred to the main mine transportation system by the fixed type conveying equipment. In the filling operation, after the return air chute gangue conveying belt conveyor, the self-walking belt type transfer vehicle is matched to convey gangue from the underground buffer gangue bin to a branch roadway operation surface to be filled.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, and solves the problems that when a multi-choice transfer conveyor and a belt conveyor are lapped in the traditional process, the lapping length of original equipment is small, the length of the original equipment needs to be frequently extended or increased, the original equipment cannot be turned, walked and transversely displaced by oneself, the operation is complex, the equipment is complex to assemble, disassemble and transport, and the coal mining efficiency is influenced.

In order to solve the problems, the technical scheme of the utility model is as follows:

a self-walking belt type transfer car comprises a machine head belt frame, a middle driven belt frame, a middle driving belt frame, a machine tail belt frame and a transition connecting frame, wherein the middle driven belt frame and the middle driving belt frame form a middle conveying unit; the machine head belt frame, the middle driven belt frame, the middle driving belt frame and the machine tail belt frame respectively comprise a main conveying device, a material groove and a traveling mechanism; the material groove comprises a material receiving groove and a material discharging groove, the material receiving groove is arranged above the main conveying device in the machine head belt frame, the middle driven belt frame and the middle driving belt frame, and the material discharging groove is arranged above the main conveying device in the machine tail belt frame; the running mechanism comprises a driving running gear, a driven running gear and a turning running gear, the driving running gear is respectively arranged below the head part of the main conveying device in the middle driving belt frame, the driven running gear is respectively arranged below the head part of the main conveying device in the middle driven belt frame and the tail belt frame, the turning running gear is arranged below the main conveying device on the head belt frame and the tail belt frame, and the head belt frame and the tail belt frame have flexible steering functions.

Further, main conveyor includes the frame, driving drum, bears the weight of bearing roller group, the return idler, driven drum, spiral straining device and conveyor belt, driving drum sets up in the tail end of frame, driven drum sets up in the head end of frame, set up the spiral straining device who is used for adjusting driven drum horizontal position between driven drum's main shaft and the frame, a plurality of bearing roller groups arrange in the top of frame in proper order, the return idler sets up in the below at frame middle part, conveyor belt connects end to end and walks around driving drum in proper order, bear the weight of roller group, driven drum and return idler.

Further, bearing roller group includes bearing roller bracket and bearing roller group, and bearing roller bracket sets up in the top of the long channel-section steel of both sides around the frame relatively, and the head and the tail both ends of bearing roller group are connected with corresponding bearing roller bracket respectively, and bearing roller group includes three bearing rollers that connect gradually to the contained angle of adjacent bearing roller axial direction sets up to the obtuse angle.

Furthermore, the receiving trough comprises a front baffle section, a middle baffle section, a rear baffle section and a scattering prevention rubber sheet, the middle baffle sections on the front side and the rear side are arranged in parallel, the front baffle section is arranged in a semicircular arc shape, the head end and the tail end of the front baffle section are fixedly connected with one end of the middle baffle sections on the two sides respectively, the head end and the tail end of the scattering prevention rubber sheet are fixedly connected with the lower edge of the other end of the middle baffle sections on the two sides respectively, and the scattering prevention rubber sheet is arranged on the inner sides of the front baffle section and the middle baffle sections on the two sides; the discharging trough is a receiving trough without a rear baffle section, and the tail end of the discharging trough is a discharging end.

Furthermore, the turning walking device comprises a driving wheel set, an electric push rod mechanism and a direction adjusting bracket, wherein the driving wheel set is arranged below the head part of the main conveying device in the machine head belt frame or below the tail part of the main conveying device in the machine tail belt frame through the direction adjusting bracket;

the driving wheel set comprises a speed reducing motor, a connecting shaft, a differential and two traveling wheels, the speed reducing motor is fixedly arranged below the connecting plate and is connected with the differential through the connecting shaft, the connecting shaft transmits power generated by the speed reducing motor to the power input end of the differential, and the traveling wheels are respectively arranged at the power output ends of two sides of the differential;

the electric push rod mechanism comprises an electric push rod bracket and an electric push rod; the direction-adjusting bracket comprises a differential upper bracket, a differential lower bracket, a middle direction-adjusting connecting frame, a first channel steel, a connecting plate and a limiting check ring; the two ends of the lower differential bracket are connected with a differential through U-shaped bolts, the first channel steel is horizontally and backwards arranged in the middle of the rear side face of the lower differential bracket, a connecting plate is arranged on the lower surface of the first channel steel, a middle direction-adjusting connecting frame is arranged above the lower differential bracket, the upper differential bracket is hinged above the middle direction-adjusting connecting frame, and a limiting check ring is arranged at the tail end of a pin shaft in the middle direction-adjusting connecting frame; the differential mechanism upper bracket and the electric push rod bracket are both fixedly arranged below the main conveying device; the front end of the inner tube of the electric push rod is fixedly arranged on the lower bracket of the differential mechanism, and the tail part of the outer sleeve is arranged at the lower part of the electric push rod bracket through the end of the fixed lug; when the electric push rod does linear reciprocating motion, the lower bracket of the differential mechanism and the middle direction-adjusting connecting frame are pushed or pulled to synchronously rotate around the pin shaft, and meanwhile, the driving wheel set is driven to rotate around the pin shaft to adjust the direction.

Further, the driven walking device comprises a driven frame bracket and a driven wheel set. The driven frame bracket comprises a driven frame upper bracket, a support and a bearing with a seat; the driven wheel set comprises an axle and driven travelling wheels, and the driven travelling wheels are arranged at two ends of the axle; the driven frame bracket is fixedly arranged below the main conveying device, and the support is oppositely arranged below the front side and the rear side of the driven frame upper bracket; the bearings with seats are respectively arranged on the supports, and the two ends of the axle are respectively arranged on the corresponding bearings with seats.

Further, the driving walking device comprises a driving frame bracket and a driving wheel set, wherein the driving frame bracket comprises a differential fixing bracket, a second channel steel and a connecting plate; the second channel steel is horizontally and backwards arranged in the middle of the rear side face of the driving frame bracket, and a connecting plate is arranged on the lower surface of the second channel steel; a driving wheel set is mounted on the differential fixing bracket through a U-shaped bolt; and a speed reducing motor and a second channel steel in the driving wheel set are fixedly arranged below the connecting plate.

Further, the transition connection frame comprises a machine head connection seat, a machine tail bracket, a joint bearing and a check ring, the machine tail bracket is arranged in an L shape, the joint bearing is installed at the tail end of the machine head connection seat, the check ring is arranged below a tail end pin shaft of the machine tail bracket, the joint bearing machine tail bracket is hinged to the machine tail bracket, the machine head connection seat is fixedly connected with the driving walking device or the driven walking device, and the machine tail bracket is fixedly arranged below the main conveying device.

Compared with the prior art, the utility model has the beneficial effects that:

in the tunneling operation, a machine head belt frame on the feeding side is in lap joint with the tail of a discharger of a first conveyor of the tunneling machine; the tail belt frame at the discharge side is in lap joint with the fixed conveying equipment of the transportation crossheading. The mined coal is transported and transferred to the crossheading roadway frame by frame through the self-walking transfer cart provided by the utility model, and then transferred to the mine transportation system, so that the continuous transportation of the mined coal mine is realized. When the material is transferred to the next working surface, the self-walking belt type transfer cart can walk by itself and flexibly transfer to a specified material receiving position to carry out continuous operation; each belt frame is an independent structure and does not need to be disassembled and assembled when being transferred underground. The limit of linear conveying is broken through, the conveying route can realize spatial curve arrangement, the topographic conditions and the environmental requirements of an underground roadway can be met, the arrangement of transfer and conveying equipment is simplified, and the installation and running cost of the transfer equipment is reduced. The whole machine has simple structure, convenient operation and maintenance, high reliability and high operation efficiency.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic perspective view of the present invention in a 90-degree turning state;

FIG. 3 is a perspective view of a frame head belt rack;

FIG. 4 is a schematic perspective view of the main conveyor (without the conveyor belt);

FIG. 5 is a schematic front view of the main conveyor (without the conveyor belt);

FIG. 6 is a schematic top view of the structure of FIG. 5;

FIG. 7 is a schematic diagram of the right side view of FIG. 5;

FIG. 8 is a schematic perspective view of the main conveyor (including the conveyor belt);

fig. 9 is a schematic view of a carrier roller set assembly structure;

FIG. 10 is a schematic perspective view of a receiving trough;

FIG. 11 is a schematic front view of the material receiving trough;

FIG. 12 is a schematic top view of the material receiving trough;

FIG. 13 is a perspective view of the turning and walking device;

FIG. 14 is a front view of the turning and walking device;

FIG. 15 is a schematic bottom view of the turning and walking device;

FIG. 16 is a structural diagram of the turning and traveling device in a left turning state in a forward traveling state;

FIG. 17 is a structural diagram illustrating a state in which the turning and traveling device turns right when the vehicle is in a forward traveling state;

FIG. 18 is a perspective view of a driving wheel set;

FIG. 19 is a perspective view of the electric putter mechanism;

FIG. 20 is a perspective view of the direction-adjusting bracket;

FIG. 21 is a front view of the direction-adjusting bracket;

FIG. 22 is a schematic cross-sectional view of the direction-adjusting bracket A-A;

FIG. 23 is a perspective view of the intermediate direction-adjusting hitch;

FIG. 24 is a front view of the intermediate driven belt rack;

FIG. 25 is a perspective view of the driven traveling unit;

FIG. 26 is a front view of the follower carriage;

FIG. 27 is a front view of the intermediate drive belt rack;

FIG. 28 is a perspective view of the active walking device;

fig. 29 is a perspective view of the active frame bracket;

FIG. 30 is a front view of the belt rack at the tail;

fig. 31 is a schematic perspective view of a discharge chute;

FIG. 32 is a perspective view of a transition link;

fig. 33 is a schematic sectional view of a transition connecting frame.

Detailed Description

The utility model is described in further detail below with reference to the figures and examples.

The self-walking belt type transfer vehicle shown in fig. 1 comprises a machine head belt frame 1, an intermediate driven belt frame 2, an intermediate driving belt frame 3, a machine tail belt frame 4 and a transition connecting frame 5, wherein the intermediate driven belt frame 2 and the intermediate driving belt frame 3 form an intermediate conveying unit, a plurality of intermediate conveying units are connected in series through the transition connecting frame 5, the head end intermediate conveying unit is connected with the machine head belt frame 1 through the transition connecting frame 5, and the tail end intermediate conveying unit is connected with the machine tail belt frame 4 through the transition connecting frame 5; the machine head belt frame 1 (shown in figure 3), the middle driven belt frame 2 (shown in figures 24-26), the middle driving belt frame 3 (shown in figures 27-29) and the machine tail belt frame 4 (shown in figure 30) respectively comprise a main conveying device 1-1, a trough 1-2 and a travelling mechanism; the material groove 1-2 comprises a material receiving groove 1-2-1 and a material discharging groove 4-1, the material receiving groove 1-2-1 is arranged above a main conveying device 1-1 in the machine head belt frame 1, the middle driven belt frame 2 and the middle driving belt frame 3, and the material discharging groove 4-1 is arranged above the main conveying device 1-1 in the machine tail belt frame 4; the running mechanism comprises a driving running device 3-1, a driven running device 2-1 and a turning running device 1-3, wherein the driving running device 3-1 is respectively arranged below the head part of a main conveying device 1-1 in a middle driving belt frame 3, the driven running device 2-1 is respectively arranged below the head part of the main conveying device 1-1 in a middle driven belt frame 2 and a machine tail belt frame 4, and the turning running device 1-3 is arranged below the main conveying device 1-1 on the machine head belt frame 1 and the machine tail belt frame 4. The self-walking belt type transfer car has the advantages that the whole structure is in segmented lap joint, the turning radius is small, the flexibility is realized, the whole belt type transfer car can reasonably set the number of the middle conveying units according to the length of a field conveying line, and therefore the production cost and the maintenance cost are reduced. As shown in fig. 2, the self-walking belt type turning vehicle is in a 90-degree turning state, and the self-walking belt type turning vehicle can walk in a roadway in a straight line or in a 90-degree turning manner through remote control operation; the forward or backward movement can be controlled at will, and the turning belt conveyor can synchronously move forward along with the operation of the heading machine.

Further, as shown in fig. 4 to 8, the main conveying device 1-1 includes a frame 1-1-1, a driving roller 1-1-2, a carrying idler set 1-1-3, a return idler 1-1-4, a driven roller 1-1-5, a spiral tensioning device 1-1-6 and a conveying belt 1-1-7, the driving roller 1-1-2 is disposed at the tail end of the frame 1-1-1, the driven roller 1-1-5 is disposed at the head end of the frame 1-1-1, the spiral tensioning device 1-1-6 for adjusting the horizontal position of the driven roller 1-1-5 is disposed between the main shaft of the driven roller 1-1-5 and the frame 1-1-1-1, the bearing carrier roller sets 1-1-3 are sequentially arranged above the rack 1-1-1, the return carrier rollers 1-1-4 are arranged below the middle part of the rack 1-1-1, and the conveying rubber belts 1-1-7 are connected end to end and sequentially bypass the driving roller 1-1-2, the bearing carrier roller sets 1-1-3, the driven roller 1-1-5 and the return carrier rollers 1-1-4.

Further, as shown in fig. 9, the bearing carrier roller group 1-1-3 includes carrier roller brackets 1-1-3-1 and carrier roller groups 1-1-3-2, the carrier roller brackets 1-1-3-1 are arranged above the long channel steel on the front and rear sides of the frame 1-1-1-1, the head and tail ends of the carrier roller group 1-1-3-2 are respectively connected with the corresponding carrier roller brackets 1-1-3-1, the carrier roller group 1-1-3-2 includes three carrier rollers connected in sequence, and the included angle in the axial direction of the adjacent carrier roller shafts is set to be an obtuse angle.

Further, as shown in fig. 10 to 12, the receiving trough 1-2-1 includes a front baffle section 1-2-1-1, a middle baffle section 1-2-1-2, a rear baffle section 1-2-1-3 and a scattering prevention rubber 1-2-1-4, the front and rear middle baffle sections 1-2-1-2 are arranged in parallel, the front baffle section 1-2-1-1 is set to be in a semi-circular arc shape, the head and tail ends of the front baffle section 1-2-1-1 are respectively and fixedly connected with one end of the middle baffle sections 1-2-1-2 at both sides, the head and tail ends of the scattering prevention rubber 1-2-1-4 are respectively and fixedly connected with the lower edge of the other end of the middle baffle sections 1-2-1-2 at both sides, the scattering-proof rubber 1-2-1-4 is arranged at the inner sides of the front baffle plate section 1-2-1-1 and the middle baffle plate sections 1-2-1-2 at the two sides; as shown in fig. 31, the discharging chute 4-1 is a receiving chute 1-2-1 without the rear baffle section 1-2-1-3, and the end of the discharging chute 4-1 is a discharging end.

Further, as shown in fig. 13 to 23, the turning traveling device 1-3 includes a driving wheel set 1-3-1, an electric push rod mechanism 1-3-2 and a direction-adjusting bracket 1-3-3, the driving wheel set 1-3-1 is installed below the head of the main conveying device 1-1 in the head belt frame 1 or below the tail of the main conveying device 1-1 in the tail belt frame 4 through the direction-adjusting bracket 1-3-3;

as shown in fig. 18, the driving wheel set 1-3-1 comprises a speed reducing motor 1-3-1-1, a connecting shaft 1-3-1-2, a differential 1-3-1-3 and two traveling wheels 1-3-1-4, the speed reducing motor 1-3-1-1 is fixedly arranged below the connecting plate 1-3-3-5, the speed reducing motor 1-3-1-1 is connected with the differential 1-3-1-3 through the connecting shaft 1-3-1-2, the connecting shaft 1-3-1-2 transmits power generated by the speed reducing motor 1-3-1-1 to the power input end of the differential 1-3-1-3, the power output ends at two sides of the differential 1-3-1-3 are respectively provided with a traveling wheel 1-3-1-4;

the electric push rod mechanism 1-3-2 comprises an electric push rod bracket 1-3-2-1 and an electric push rod 1-3-2-2; the direction-adjusting bracket 1-3-3 comprises a differential upper bracket 1-3-3-1, a differential lower bracket 1-3-3-2, a middle direction-adjusting connecting frame 1-3-3-3, a first channel steel 1-3-4, a connecting plate 1-3-3-5 and a limiting check ring 1-3-3-6; two ends of the differential lower bracket 1-3-3-2 are connected with the differential 1-3-1-3 through U-shaped bolts, the first channel steel 1-3-3-4 is horizontally and backwards arranged in the middle of the rear side face of the differential lower bracket 1-3-3-2, the lower surface of the first channel steel 1-3-3-4 is provided with a connecting plate 1-3-5, a middle direction-adjusting connecting frame 1-3-3-3 is arranged above the differential lower bracket 1-3-3-2, the middle direction-adjusting connecting frame 1-3-3 is hinged to the differential upper bracket 1-3-3-1 above the middle direction-adjusting connecting frame 1-3-3, and a limit check ring 1-3-3-6 is arranged at the tail end of a pin shaft in the middle direction-adjusting connecting frame 1-3-3; the differential upper bracket 1-3-3-1 and the electric push rod bracket 1-3-2-1 are fixedly arranged below the main conveying device 1-1; the front end of the inner tube of the electric push rod 1-3-2-2 is fixedly arranged on the lower bracket 1-3-3-2 of the differential mechanism, and the tail part of the outer sleeve is arranged on the lower part of the electric push rod bracket 1-3-2-1 through the end of the fixed lug; when the electric push rod 1-3-2-2 does linear reciprocating motion, the differential lower bracket 1-3-3-2 and the middle direction-adjusting connecting frame 1-3-3-3 are pushed or pulled to synchronously rotate around the pin shaft, and simultaneously, the driving wheel set 1-3-1 is driven to rotate around the pin shaft for direction adjustment.

Further, as shown in fig. 24 to 26, the driven traveling apparatus 2-1 includes a driven frame bracket 2-1-1 and a driven wheel group 2-1-2. The driven frame bracket 2-1-1 comprises a driven frame upper bracket 2-1-1-1, a support 2-1-1-2 and a bearing with a support 2-1-1-3; the driven wheel set 2-1-2 comprises an axle and driven travelling wheels, and the driven travelling wheels are arranged at two ends of the axle; the driven frame bracket 2-1-1 is fixedly arranged below the main conveying device 1-1, and the support 2-1-1-2 is oppositely arranged below the front side and the rear side of the driven frame upper bracket 2-1-1-1; the bearings 2-1-1-3 with seats are respectively arranged on the support 2-1-1-2, and the two ends of the axle are respectively arranged on the corresponding bearings 2-1-1-3 with seats.

Further, as shown in fig. 27 to 29, the active traveling device 3-1 includes an active frame bracket 3-1-1 and a driving wheel set 1-3-1, and the active frame bracket 3-1-1 includes a differential fixing bracket 3-1-1-1, a second channel steel 3-1-1-2 and a connecting plate 1-3-3-5; the second channel steel 3-1-1-2 is horizontally and backwards arranged in the middle of the rear side face of the active frame bracket 3-1-1, and the lower surface of the second channel steel 3-1-1-2 is provided with a connecting plate 1-3-3-5; a driving wheel set 1-3-1 is mounted on the differential fixing bracket 3-1-1 through a U-shaped bolt; a speed reducing motor 1-3-1-1 and a second channel steel 3-1-1-2 in the driving wheel set 1-3-1 are fixedly arranged below the connecting plate 1-3-3-5.

Further, as shown in fig. 32 and 33, the transition connecting frame 5 comprises a nose connecting seat 5-1, a tail bracket 5-2, a knuckle bearing 5-3 and a retainer ring 5-4; the tail bracket 5-2 is arranged in an L shape, the tail end of the head connecting seat 5-1 is provided with a joint bearing 5-3, a retainer ring 5-4 is arranged below a tail end pin shaft of the tail bracket 5-2, the joint bearing 5-3 is hinged with the tail bracket 5-2, the head connecting seat 5-1 is fixedly connected with the driving walking device 3-1 or the driven walking device 2-1, and the tail bracket 5-2 is fixedly arranged below the main conveying device 1-1.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (8)

1. The utility model provides a from walking belt year car that changes, its characterized in that: the automatic belt conveyor comprises a machine head belt frame (1), an intermediate driven belt frame (2), an intermediate driving belt frame (3), a machine tail belt frame (4) and a transition connecting frame (5), wherein the intermediate driven belt frame (2) and the intermediate driving belt frame (3) form an intermediate conveying unit, a plurality of intermediate conveying units are connected in series through the transition connecting frame (5), a head end intermediate conveying unit is connected with the machine head belt frame (1) through the transition connecting frame (5), and a tail end intermediate conveying unit is connected with the machine tail belt frame (4) through the transition connecting frame (5); the machine head belt frame (1), the middle driven belt frame (2), the middle driving belt frame (3) and the machine tail belt frame (4) respectively comprise a main conveying device (1-1), a material groove (1-2) and a traveling mechanism; the material groove (1-2) comprises a material receiving groove (1-2-1) and a material discharging groove (4-1), the material receiving groove (1-2-1) is arranged above a main conveying device (1-1) in the machine head belt frame (1), the middle driven belt frame (2) and the middle driving belt frame (3), and the material discharging groove (4-1) is arranged above the main conveying device (1-1) in the machine tail belt frame (4); the running mechanism comprises a driving running device (3-1), a driven running device (2-1) and a turning running device (1-3), the driving running device (3-1) is respectively installed below the head part of the main conveying device (1-1) in the middle driving belt frame (3), the driven running device (2-1) is respectively installed below the head part of the main conveying device (1-1) in the middle driven belt frame (2) and the machine tail belt frame (4), and the turning running device (1-3) is arranged below the main conveying device (1-1) on the machine head belt frame (1) and the machine tail belt frame (4).

2. The self-propelled belt-type transfer cart of claim 1, wherein: the main conveying device (1-1) comprises a rack (1-1-1), a driving roller (1-1-2), a bearing idler set (1-1-3), a return idler (1-1-4), a driven roller (1-1-5), a spiral tensioning device (1-1-6) and a conveying rubber belt (1-1-7), wherein the driving roller (1-1-2) is arranged at the tail end of the rack (1-1-1), the driven roller (1-1-5) is arranged at the head end of the rack (1-1-1), the spiral tensioning device (1-1-6) for adjusting the horizontal position of the driven roller (1-1-5) is arranged between a main shaft of the driven roller (1-1-5) and the rack (1-1-1), the bearing idler sets (1-1-3) are sequentially arranged above the rack (1-1-1), the return idler (1-1-4) is arranged below the middle of the rack (1-1-1), and the conveying rubber belts (1-1-7) are connected end to end and sequentially bypass the driving roller (1-1-2), the bearing idler sets (1-1-3), the driven roller (1-1-5) and the return idler (1-1-4).

3. The self-propelled belt-type transfer cart of claim 2, wherein: the bearing carrier roller group (1-1-3) comprises carrier roller brackets (1-1-3-1) and carrier roller groups (1-1-3-2), the carrier roller brackets (1-1-3-1) are arranged above long channel steel on the front side and the rear side of the rack (1-1-1) relatively, the head end and the tail end of each carrier roller group (1-1-3-2) are connected with the corresponding carrier roller brackets (1-1-3-1) respectively, each carrier roller group (1-1-3-2) comprises three carrier rollers which are connected in sequence, and included angles in the axial direction of adjacent carrier rollers are set to be obtuse angles.

4. The self-propelled belt-type transfer cart of claim 1, wherein: the material receiving trough (1-2-1) comprises a front baffle section (1-2-1-1), a middle baffle section (1-2-1-2), a rear baffle section (1-2-1-3) and a material scattering prevention rubber sheet (1-2-1-4), wherein the front and rear two-side middle baffle sections (1-2-1-2) are arranged in parallel, the front baffle section (1-2-1-1) is in a semi-circular arc shape, the head end and the tail end of the front baffle section (1-2-1-1) are fixedly connected with one end of the two-side middle baffle sections (1-2-1-2), the head end and the tail end of the material scattering prevention rubber sheet (1-2-1-4) are fixedly connected with the lower edge of the other end of the two-side middle baffle sections (1-2-1-2), the scattering-proof rubber (1-2-1-4) is arranged at the inner sides of the front baffle section (1-2-1-1) and the middle baffle sections (1-2-1-2) at the two sides; the discharging trough (4-1) is a receiving trough (1-2-1) without a rear baffle section (1-2-1-3), and the tail end of the discharging trough (4-1) is a discharging end.

5. The self-propelled belt-type transfer cart of claim 1, wherein: the turning walking device (1-3) comprises a driving wheel set (1-3-1), an electric push rod mechanism (1-3-2) and a direction adjusting bracket (1-3-3), wherein the driving wheel set (1-3-1) is arranged below the head part of a main conveying device (1-1) in the machine head belt frame (1) or below the tail part of the main conveying device (1-1) in the machine tail belt frame (4) through the direction adjusting bracket (1-3-3);

the driving wheel set (1-3-1) comprises a speed reducing motor (1-3-1-1) and a connecting shaft (1-3-1-2), the differential mechanism (1-3-1-3) and two traveling wheels (1-3-1-4), the speed reducing motor (1-3-1-1) is connected with the differential mechanism (1-3-1-3) through a connecting shaft (1-3-1-2), the connecting shaft (1-3-1-2) transmits power generated by the speed reducing motor (1-3-1-1) to the power input end of the differential mechanism (1-3-1-3), and the traveling wheels (1-3-1-4) are respectively installed at the power output ends on two sides of the differential mechanism (1-3-1-3);

the electric push rod mechanism (1-3-2) comprises an electric push rod bracket (1-3-2-1) and an electric push rod (1-3-2-2); the direction-adjusting bracket (1-3-3) comprises a differential upper bracket (1-3-3-1), a differential lower bracket (1-3-3-2), a middle direction-adjusting connecting frame (1-3-3-3), a first channel steel (1-3-3-4), a connecting plate (1-3-3-5) and a limiting check ring (1-3-3-6); the two ends of a lower differential bracket (1-3-3-2) are connected with a differential (1-3-1-3) through U-shaped bolts, a first channel steel (1-3-3-4) is horizontally arranged in the middle of the rear side face of the lower differential bracket (1-3-3-2) backwards, a connecting plate (1-3-3-5) is arranged on the lower surface of the first channel steel (1-3-3-4), a speed reducing motor (1-3-1-1) is fixedly arranged below the connecting plate (1-3-3-5), a middle direction adjusting connecting frame (1-3-3-3) is arranged above the lower differential bracket (1-3-2), and the middle direction adjusting connecting frame (1-3-3) is hinged to an upper differential bracket (1-3-3) 3-1), installing a limiting check ring (1-3-3-6) at the tail end of a pin shaft in the middle direction-adjusting connecting frame (1-3-3-3); the differential upper bracket (1-3-3-1) and the electric push rod bracket (1-3-2-1) are fixedly arranged below the main conveying device (1-1); the front end of the inner tube of the electric push rod (1-3-2-2) is fixedly arranged on the lower bracket (1-3-3-2) of the differential mechanism, and the tail part of the outer sleeve is arranged on the lower part of the electric push rod bracket (1-3-2-1) through the end of the fixed lug; when the electric push rod (1-3-2-2) does linear reciprocating motion, the differential lower bracket (1-3-3-2) and the middle direction-adjusting connecting frame (1-3-3-3) are pushed or pulled to synchronously rotate around the pin shaft, and meanwhile, the driving wheel set (1-3-1) is driven to rotate around the pin shaft for direction adjustment.

6. The self-propelled belt-type transfer cart of claim 1, wherein: the driven walking device (2-1) comprises a driven frame bracket (2-1-1) and a driven wheel set (2-1-2), and the driven frame bracket (2-1-1) comprises a driven frame upper bracket (2-1-1-1), a support (2-1-1-2) and a bearing (2-1-1-3) with a support; the driven wheel set (2-1-2) comprises an axle and driven travelling wheels, and the driven travelling wheels are arranged at two ends of the axle; the driven frame bracket (2-1-1) is fixedly arranged below the main conveying device (1-1), and the support (2-1-1-2) is oppositely arranged below the front side and the rear side of the driven frame upper bracket (2-1-1-1); the bearings (2-1-1-3) with seats are respectively arranged on the supports (2-1-1-2), and the two ends of the axle are respectively arranged on the corresponding bearings (2-1-1-3) with seats.

7. The self-propelled belt-type transfer cart of claim 1, wherein: the driving walking device (3-1) comprises a driving frame bracket (3-1-1) and a driving wheel set (1-3-1), wherein the driving frame bracket (3-1-1) comprises a differential fixing bracket (3-1-1-1), a second channel steel (3-1-1-2) and a connecting plate (1-3-3-5); the second channel steel (3-1-1-2) is horizontally and backwards arranged in the middle of the rear side face of the active frame bracket (3-1-1), and the lower surface of the second channel steel (3-1-1-2) is provided with a connecting plate (1-3-3-5); a driving wheel set (1-3-1) is arranged on the differential fixing bracket (3-1-1-1) through a U-shaped bolt; a speed reducing motor (1-3-1-1) and a second channel steel (3-1-1-2) in the driving wheel set (1-3-1) are fixedly arranged below the connecting plate (1-3-3-5).

8. The self-propelled belt-type transfer cart of claim 1, wherein: the transition connecting frame (5) comprises a machine head connecting seat (5-1), a machine tail bracket (5-2), a joint bearing (5-3) and a check ring (5-4); the tail bracket (5-2) is L-shaped, a joint bearing (5-3) is mounted at the tail end of the head connecting seat (5-1), a retainer ring (5-4) is arranged below a tail pin shaft of the tail bracket (5-2), the joint bearing (5-3) is hinged with the tail bracket (5-2), the head connecting seat (5-1) is fixedly connected with the driving walking device (3-1) or the driven walking device (2-1), and the tail bracket (5-2) is fixedly arranged below the main conveying device (1-1).

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