Modular flexible wheeled belt conveyor

Abstract

The modular flexible wheeled belt conveyor comprises a vehicle head arranged on the left side, a plurality of modular vehicle bodies hingedly connected on the right side of the vehicle head, and a connection structure between the modular vehicle bodies, each of the modular vehicle bodies comprising front and rear axles arranged on the left and right sides, respectively, turning portions arranged on the front and rear sides of the lower ends of the front and rear axles, respectively, and wheels arranged on the lower ends of each set of turning portions and rotatably connected to the corresponding front and rear axles along a vertical axis, a connecting portion arranged between the front and rear axles, the connecting portion comprising front and rear traction structures, the left and right ends of the front traction structure being hingedly connected to the front ends of the front and rear axles, respectively, and the left and right ends of the rear traction structure being hingedly connected to the rear ends of the front and rear axles, respectively, and the modular flexible wheeled belt conveyor can realize curved transportation under the traction of only the vehicle head.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining, in particular to a modular flexible wheeled belt conveyor. BACKGROUND

[0002] At present, with the continuous development of coal mining technology, more and more equipment is applied in the process of coal mining construction, among which the conveying of excavated materials is mainly realized by using a chute, a telescopic belt conveyor and a transport belt conveyor. Since the three kinds of equipment cannot realize curved conveying, when the working face crossheading is excavated, the chute needs to be installed first, and the chute and the transport belt conveyor of the transport roadway are connected to realize the outward conveying of the materials. Since the length of the chute cannot be adjusted, after excavating a distance, the chute needs to be withdrawn, and then the telescopic belt conveyor is installed. When the cut-and-fill excavation is carried out, the chute also needs to be installed and withdrawn, so that the installation and disassembly of the equipment occupy a lot of time in each operation shift, which leads to less effective excavation time, thereby being not conducive to improving the excavation efficiency.

[0003] The self-moving flexible belt conveyor known by the applicant (CN 109969683 A) comprises a movable head station and a movable tail station, and further comprises at least two middle movable modules, a plurality of connecting rods, a traction device, a plurality of bottom moving mechanisms and a track. The movable head station, the movable modules and the movable tail station are sequentially hinged through the plurality of connecting rods. The movable head station, the movable tail station and the middle movable modules are all connected with the track laid on the ground through the bottom moving mechanisms. The traction device is connected with the movable head station and the movable tail station through two steel wires respectively.

[0004] However, the above-mentioned technology at least has the following technical problems:

[0005] 1. The movable tail station uses the extrusion force of the track acting on the wheels for steering, which increases the wear of the wheels and is not conducive to the maintenance of the wheels.

[0006] 2. The turning radius of the above-mentioned equipment is large, which is not conducive to the narrow curve and reduces the application range of the above-mentioned equipment. SUMMARY

[0007] The purpose of the present application is to provide a modular flexible wheeled belt conveyor which can realize curved transportation under the condition of only the head traction, and at the same time, the wheels are driven to rotate towards the head direction by using the traction structure during the curved transportation, so as to reduce the turning radius and be conducive to the transportation in the narrow channel.

[0008] The present application adopts the following technical solutions:

[0009] The utility model provides a modular flexible wheeled belt conveyor, including setting left side car head, hinge a plurality of modular car body right side of car head, a plurality of modular car body head and tail are sequentially hinged, every modular car body includes setting left and right sides front axle and rear axle respectively, the lower end of front axle and rear axle is provided with steering part respectively, and steering part is connected with corresponding front axle and rear axle along vertical axis rotation, is provided with connecting part between front axle and rear axle, and connecting part includes front traction structure and rear traction structure, and the left and right ends of front traction structure are hinged with the front end of front axle and rear axle respectively, and the left and right ends of rear traction structure are hinged with the rear end of front axle and rear axle respectively, and the inner side of front traction structure and rear traction structure is further provided with steering drive part, and steering drive part is used to drive steering part to rotate along vertical axis in the set range, and the upper end of front axle and rear axle is further provided with support part, and the upper side of support part is fixedly connected with flexible transport belt.

[0010] Further, the right end surface of the car head is fixedly connected with an L-shaped trailer hook, the L-shaped trailer hook comprises a horizontal cross brace and a vertical brace, the left end of the cross brace is fixedly connected with the car head, the right end of the cross brace is fixedly connected with the lower part of the vertical brace, and the upper part of the vertical brace is further fixedly connected with a spherical anti-disengagement joint; a first support column is vertically fixedly arranged at the lower end of the front axle, the first support column is connected with the vertical brace through a first connecting plate, the left and right ends of the first connecting plate are respectively provided with a left mounting hole and a right mounting hole, the vertical brace and the first support column are respectively arranged through the corresponding left mounting hole and right mounting hole, and the vertical brace and the first support column are respectively rotationally connected with the corresponding left mounting hole and right mounting hole.

[0011] Further, the front axle is in the form of a cuboid horizontally arranged along the front and back directions, a limiting block is fixedly arranged at the upper end surface of the front axle, and the upper end surface of the limiting block is provided with an arc-shaped limiting groove and closely contacts the lower end surface of the flexible transport belt.

[0012] Further, the upper end surface of the front axle is fixedly provided with a cylindrical outer connecting pin on the left and right sides, and the lower end surface of the front axle is vertically provided with a rotating connecting hole on the left and right sides; the rear axle is correspondingly arranged with the front axle, and the rear axle has the same structure as the front axle; the steering part comprises a rotating column correspondingly arranged with the rotating connecting hole, the rotating column is rotationally connected with the front axle through the rotating connecting hole, a wheel support is fixedly arranged at the lower end of the rotating column, a wheel shaft is horizontally arranged through the wheel support at the lower end of the wheel support along the front and back directions, the wheel shaft is coaxially arranged with the wheel and rotationally connected with the wheel support; the left and right ends of the front traction structure are respectively sleeved on the cylindrical outer connecting pins arranged on the upper surfaces of the front ends of the front axle and the rear axle, and the left and right ends of the front traction structure are respectively rotationally connected with the corresponding front ends of the front axle and the rear axle through the cylindrical outer connecting pins, and the left and right ends of the rear traction structure are respectively sleeved on the cylindrical outer connecting pins arranged on the upper surfaces of the rear ends of the front axle and the rear axle, and the left and right ends of the rear traction structure are respectively rotationally connected with the rear ends of the front axle and the rear axle through the cylindrical outer connecting pins.

[0013] Further, the front traction structure comprises two groups of traction rods arranged left and right, inner connecting rings are fixedly arranged at inner ends of the two groups of traction rods respectively, the two groups of inner connecting rings are coaxially arranged up and down, and the two groups of inner connecting rings are coaxially sleeved with the same group of inner connecting pins, each group of inner connecting rings is rotationally connected with the inner connecting pin; outer connecting rings are fixedly arranged at outer ends of the two groups of traction rods respectively, the two groups of outer connecting rings are coaxially sleeved with the corresponding outer connecting pins fixed on upper end faces of the front axle and the rear axle respectively, and the two groups of outer connecting rings are rotationally connected with the corresponding two groups of outer connecting pins; the rear traction structure has the same structure as the front traction structure and is symmetrically arranged front and back; the two groups of inner connecting rings on the rear traction structure and the front traction structure are always inside the two groups of outer connecting rings.

[0014] Further, the steering driving part comprises two groups of first telescopic rods arranged front and back, left ends of the two groups of first telescopic rods are fixed on the same group of first driving rings, the first driving rings are sleeved with first driving pins, the first driving pins are arranged up and down and the upper end of the first driving pin is fixed with a first driving rod, the first driving rod is arranged front and back and the front and back ends of the first driving rod are respectively connected with first connecting rods arranged vertically along the radial direction, the front and back groups of first connecting rods are respectively inserted on second connecting rods arranged horizontally left and right and are rotationally connected with the second connecting rods, left ends of the front and back groups of second connecting rods are respectively fixedly connected with the front and back wheel supports; right ends of the two groups of first telescopic rods are respectively sleeved with corresponding inner connecting pins and are rotationally connected with the inner connecting pins.

[0015] Further, the steering driving part further comprises two groups of second telescopic rods, right ends of the two groups of second telescopic rods are fixed on the same second driving ring, the second driving ring is sleeved with a second driving pin, the second driving pin is arranged up and down and the upper end of the second driving pin is fixed with a second driving rod, the second driving rod is arranged front and back and the front and back ends of the second driving rod are respectively connected with third connecting rods arranged vertically along the radial direction, the front and back groups of third connecting rods are respectively inserted on fourth connecting rods arranged horizontally left and right and are rotationally connected with the fourth connecting rods, right ends of the front and back groups of third connecting rods are respectively fixedly connected with the front and back wheel supports; left ends of the two groups of second telescopic rods are respectively sleeved with two groups of inner connecting pins and are rotationally connected with the inner connecting pins; the first telescopic rod comprises a catheter with one end open, a guide rod is coaxially inserted in the catheter along the open end and the catheter and the guide rod are slidingly connected, a damping spring is further arranged between the inner end face of the guide rod and the inner bottom face of the catheter, and the first telescopic rod and the second telescopic rod are the same in structure.

[0016] Further, the support part comprises rollers arranged at front and back ends of the limiting block, each group of rollers is arranged obliquely at the outer end on the upper inner end and at the lower end, and each group of rollers is coaxially inserted with a support rod, the support rod is rotationally connected with the roller, and the peripheral surface of the roller is always close to the front and back side surfaces of the flexible conveying belt; a first horizontal shaft is arranged at the upper end of each group of support rods along the radial direction left and right, and the lower ends of the two groups of support rods are respectively rotationally connected with the front and back ends of the limiting block; the first horizontal shaft is rotationally connected with the upper end of the support rod; and the first horizontal shaft is fixedly connected with the roller posture adjusting structure arranged on the front axle.

[0017] Further, the front bridge middle part is also provided with a moving through groove, the moving through groove is horizontally arranged left and right, and the top wall of the front and rear ends of the moving through groove is provided with a containing through groove; the posture adjusting structure comprises two moving blocks arranged in the front and rear ends of the moving through groove along the left and right directions, second horizontal shafts are inserted in each group of moving blocks along the left and right directions, and the left and right ends of each second horizontal shaft are arranged along the radial direction and are arranged in corresponding vertical shafts; the two vertical shafts are arranged upward and downward, the lower ends of the two vertical shafts are rotationally connected with the left and right ends of the corresponding second horizontal shaft, and the upper ends of the two vertical shafts are fixedly connected with the left and right ends of the corresponding first horizontal shaft; the support rods with a certain length are arranged, so that the left and right second horizontal shafts are arranged on the inner side of the corresponding first horizontal shaft.

[0018] Further, the front and rear corresponding two groups of moving blocks are provided with compression springs, and the compression springs are always in a compressed state; the middle part of the moving block is provided with a limiting column, the limiting column is arranged in the containing through groove and is arranged in sliding mode with the containing through groove, the outer side of each group of limiting columns is provided with a limiting column driving disc, and the limiting column driving disc is in close contact with the limiting column in the circumferential direction; the outer connecting pin is eccentrically arranged on the limiting column driving disc and is rotationally connected with the limiting column driving disc, the lower end surface of the limiting column driving disc is fixedly arranged with the outer connecting ring, and the two groups of limiting column driving discs are symmetrically arranged along the front and rear ends of the front bridge.

[0019] The front traction structure and the rear traction structure are arranged, so that the modular vehicle body realizes flexible connection, and the change of the steering can be perceived through the change of the tension of the front traction structure and the rear traction structure.

[0020] The support part is arranged, so that the safe transportation of the articles on the flexible conveying belt is realized, and the posture adjusting structure of the roller is arranged, so that the posture of the flexible conveying belt is adjusted, and the safety of transportation is ensured.

[0021] The support part turning driving part is arranged, so that the left and right wheels arranged left and right are arranged in the arc of the curve under the adjustment of the turning driving part, and the stability of the curve is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the vehicle head in the application;

[0023] Figure 2 It is a structure schematic view of the front bridge in the application;

[0024] Figure 3 It is a structure schematic view of the L-shaped trailer hook in the application;

[0025] Figure 4 It is a structure schematic view of the vehicle wheel in the application;

[0026] Figure 5 It is a structure schematic view of the vertical support in the application;

[0027] Figure 6 Structure diagram of the first connecting plate in the application;

[0028] Figure 7 Structure diagram of the cross brace in the application;

[0029] Figure 8 Structure diagram of the wheel support in the application;

[0030] Figure 9 Structure diagram of the first support column in the application;

[0031] Figure 10 Structure diagram of the first cross shaft in the application;

[0032] Figure 11 Structure diagram of the damping spring in the application;

[0033] Figure 12 Structure diagram of the first connecting plate in the application; Figure 10 Enlarged diagram of A in the application.

[0034] In the figure, 1 is the vehicle head, 2 is the modular vehicle body, 3 is the front axle, 4 is the rear axle, 5 is the front traction structure, 6 is the rear traction structure, 7 is the L-shaped trailer hook, 8 is the cross brace, 9 is the vertical brace, 10 is the first connecting plate, 11 is the first support column, 12 is the outer connecting pin, 13 is the rotating connecting hole, 14 is the wheel, 15 is the rotating column, 16 is the wheel support, 17 is the traction rod, 18 is the inner connecting ring, 19 is the inner connecting pin, 20 is the outer connecting ring, 21 is the first driving ring, 22 is the first telescopic rod, 23 is the second telescopic rod, 24 is the second support column, 25 is the second connecting plate, 26 is the limiting block, 27 is the first driving pin, 28 is the first driving rod, 29 is the first connecting rod, 30 is the second connecting rod, 31 is the second driving ring, 32 is the second driving pin, 33 is the second driving rod, 34 is the third connecting rod, 35 is the fourth connecting rod, 36 is the guide pipe, 37 is the guide rod, 38 is the damping spring, 39 is the roller, 40 is the support rod, 41 is the first cross shaft, 42 is the moving through slot, 43 is the containing through slot, 44 is the moving block, 45 is the limiting column, 46 is the second cross shaft, 47 is the vertical shaft, 48 is the limiting column driving disc, 49 is the compression spring, and 50 is the flexible transport belt. DETAILED DESCRIPTION

[0035] As Figures 1 to 12As shown, the modular flexible wheeled belt conveyor comprises a vehicle head 1 arranged on the left side, a plurality of modular vehicle bodies 2 hingedly connected to the right side of the vehicle head 1, and the plurality of modular vehicle bodies 2 are sequentially hingedly connected at the head and tail to form a module connection structure. Each modular vehicle body 2 comprises a front axle 3 and a rear axle 4 arranged on the left and right sides, respectively. The front axle 3 and the rear axle 4 are provided with steering portions on the front and rear sides of the lower ends, respectively. Each group of steering portions is provided with a wheel 14 at the lower end, and the steering portion is rotationally connected to the corresponding front axle 3 and rear axle 4 along a vertical axis. A connecting portion is arranged between the front axle 3 and the rear axle 4, and the connecting portion comprises a front traction structure 5 and a rear traction structure 6. The left and right ends of the front traction structure 5 are hingedly connected to the front ends of the front axle 3 and the rear axle 4, respectively. The left and right ends of the rear traction structure 6 are hingedly connected to the rear ends of the front axle 3 and the rear axle 4, respectively. A steering drive portion is further arranged on the inner side of the front traction structure 5 and the rear traction structure 6, and the steering drive portion is used to drive the steering portion to rotate along the vertical axis within a set range. A support portion is further arranged on the upper end of the front axle 3 and the rear axle 4, and the support portion is fixedly connected to a flexible conveying belt 50 on the upper side.

[0036] After the specified goods are loaded in the flexible conveying belt 50 on the upper end of the support portion, the vehicle head 1 drives the plurality of sequentially connected modular vehicle bodies 2 behind to move along a straight line. The plurality of sequentially hingedly connected modular vehicle bodies 2 follow the vehicle head 1 to move along a straight line under the traction of the vehicle head 1.

[0037] When the vehicle head 1 turns, the modular vehicle body 2 passes through the curve, and the flexible conveying belt 50 appears to be curved, that is, the front row of two groups of wheels 14 and the rear row of two groups of wheels 14 fixed below the flexible conveying belt 50 appear to have a displacement difference, resulting in different degrees of tension of the front traction structure 5 and the rear traction structure 6. The steering drive portion arranged on the inner side of the front traction structure 5 and the rear traction structure 6 is driven by the tension, and the steering drive portion drives the steering portion to deflect the wheels 14 towards the vehicle head 1 until it is on a set turning circle, forming a turning posture of the modular vehicle body 2.

[0038] In order to facilitate the articulation of the vehicle head 1 and the modular vehicle body 2; in the present application, the right end surface of the vehicle head 1 is fixedly connected with the L-shaped trailer hook 7, the L-shaped trailer hook 7 comprises a horizontal cross brace 8 and a vertical brace 9, the left end of the cross brace 8 is fixed with the vehicle head 1, and the right end is fixed with the lower part of the vertical brace 9, and the upper part of the vertical brace 9 is also fixedly provided with a spherical anti-disengagement joint; a first support column 11 is vertically fixedly arranged at the lower end of the front axle 3, the first support column 11 is connected with the vertical brace 9 through the first connecting plate 10, the left and right ends of the first connecting plate 10 are respectively provided with left and right mounting holes, the vertical brace 9 and the first support column 11 are respectively provided with corresponding left and right mounting holes, and the vertical brace 9 and the first support column 11 are respectively rotatably connected with the corresponding left and right mounting holes; when the vehicle head 1 needs to be disconnected with the modular vehicle body 2, the vertical brace 9 is separated from the left mounting hole, so that the vehicle head 1 and the modular vehicle body 2 can be disconnected; a second support column 24 is vertically fixedly arranged at the lower end of the rear axle 4, and the second support column 24 is connected with the first support column 11 in the adjacent right side of the modular vehicle body 2 through the second connecting plate 25; so as to realize the sequential connection of a plurality of modular vehicle bodies 2.

[0039] In order to form a stable support for the flexible conveying belt 50; in the present application, the front axle 3 is in the form of a cuboid structure arranged horizontally along the front and rear directions, a limiting block 26 is fixedly arranged on the upper end surface of the front axle 3, and the upper end surface of the limiting block 26 is provided with an arc-shaped limiting groove and closely contacts the lower end surface of the flexible conveying belt 50;

[0040] In order to make the modular vehicle bodies 2 connected with the vehicle head 1 in sequence follow the vehicle head 1 to turn, that is, the swinging posture of the wheels 14 can be matched with the orientation of the vehicle head 1; in the present application, cylindrical outer connecting pins 12 are fixedly arranged on the front and rear sides of the upper end surface of the front axle 3, and rotary connecting holes 13 are vertically arranged on the front and rear sides of the lower end surface of the front axle 3; the rear axle 4 is arranged corresponding to the left and right sides of the front axle 3, and the rear axle 4 has the same structure as the front axle 3; the steering part comprises a rotating column 15 arranged corresponding to the rotary connecting hole 13, the rotating column 15 is rotatably connected with the front axle 3 through the rotary connecting hole 13, a wheel support 16 is fixedly arranged on the lower end of the rotating column 15, a wheel shaft is horizontally arranged on the lower end of the wheel support 16 along the front and rear directions, the wheel shaft is coaxially arranged with the wheel 14 and is rotatably connected with the wheel support 16; the left and right ends of the front traction structure 5 are respectively sleeved on the cylindrical outer connecting pins 12 arranged on the front end upper surfaces of the front axle 3 and the rear axle 4, and the left and right ends of the front traction structure 5 are respectively rotatably connected with the front ends of the corresponding front axle 3 and rear axle 4 through the cylindrical outer connecting pins 12, the left and right ends of the rear traction structure 6 are respectively sleeved on the cylindrical outer connecting pins 12 arranged on the rear end upper surfaces of the front axle 3 and the rear axle 4, and the left and right ends of the rear traction structure 6 are respectively rotatably connected with the rear ends of the front axle 3 and the rear axle 4 through the cylindrical outer connecting pins 12; that is, the left and right ends of the front traction structure 5 are respectively rotatably connected with the front ends of the front axle 3 and the rear axle 4; the left and right ends of the rear traction structure 6 are respectively rotatably connected with the rear ends of the front axle 3 and the rear axle 4;

[0041] When the vehicle head 1 turns, the vehicle head 1 drags the L-shaped trailer hook 7 arranged on the right side of the vehicle head 1, the front axle 3 in the modular vehicle body 2 hinged with the L-shaped trailer hook 7 moves along with the vehicle head 1, and the front axle 3 drags the wheel support 16 hinged with the front axle 3 to swing to adapt to the movement of the front axle 3, the resultant force of the friction force from the ground and the traction force makes the wheel 14 hinged with the wheel support 16 below rotate on the turning circumference of the vehicle head 1, and the front axle 3 is connected with the rear axle 4 through the front traction structure 5 and the rear traction structure 6, so that the rear axle 4 repeats the above-mentioned action to complete the turning of the modular vehicle body 2 along with the vehicle head 1.

[0042] In the process of turning of the modular vehicle body 2, since the circumference of the outer circle of the curve is greater than the circumference of the inner circle of the curve, that is, the displacement of the two groups of wheels 14 on the outer side of the curve is greater than the displacement of the two groups of wheels 14 on the inner side, in order to adapt the change of the displacement of the wheels 14, the front traction structure 5 and the rear traction structure 6 are provided.

[0043] In the present application, the front traction structure 5 comprises two groups of traction rods 17 arranged left and right, the inner ends of the two groups of traction rods 17 are respectively fixedly provided with inner connecting rings 18, the two groups of inner connecting rings 18 are coaxially arranged above and below, and the two groups of inner connecting rings 18 are coaxially sleeved with the same group of inner connecting pins 19, and each group of inner connecting rings 18 is rotationally connected with the inner connecting pin 19; the outer ends of the two groups of traction rods 17 are respectively fixedly provided with outer connecting rings 20, the two groups of outer connecting rings 20 are respectively coaxially sleeved with the corresponding outer connecting pins 12 fixed on the upper end faces of the front axle 3 and the rear axle 4, and the two groups of outer connecting rings 20 are rotationally connected with the corresponding two groups of outer connecting pins 12, and the rear traction structure 6 has the same structure as the front traction structure 5 and is symmetrically arranged in front and back; in the present application, the two groups of inner connecting rings 18 on the rear traction structure 6 and the front traction structure 5 are always inside the two groups of outer connecting rings 20.

[0044] The modular vehicle body 2 of the above structure needs the displacement of the two groups of wheels 14 on the outside of the curve to be greater than that of the two groups of wheels 14 on the inside of the curve during the turning process, and in the application, the displacement of the two groups of wheels 14 on the outside of the curve is made greater than that of the two groups of wheels 14 on the inside of the curve by adjusting the distance between the outer ends of the two groups of traction rods 17 on the front and back sides. Meanwhile, in order to ensure that the wheels 14 can actively rotate to the side of the turning direction of the vehicle head 1 during the turning process and reduce the probability of wheel 14 skidding on the ground, the steering driving part in the application includes two groups of first telescopic rods 22 arranged in front and back, the left ends of the two groups of first telescopic rods 22 are fixed on the same group of first driving rings 21, the first driving ring 21 is sleeved with a first driving pin 27, the first driving pin 27 is arranged up and down and has a first driving rod 28 fixed at the upper end, the first driving rod 28 is arranged in front and back, and the front and back ends of the first driving rod 28 are respectively connected with vertically arranged first connecting rods 29 along the radial direction, the front and back two groups of first connecting rods 29 are respectively inserted on and rotationally connected with horizontally arranged second connecting rods 30, and the left ends of the front and back two groups of second connecting rods 30 are respectively fixedly connected with the front and back two groups of wheel supports 16.

[0045] During the turning process of the modular vehicle body 2, although the direction of the wheels 14 arranged below the front axle 3 can be consistent with the moving direction of the vehicle head 1 in the driving of the two groups of first telescopic rods 22, the turning radius is relatively large. If the wheels 14 arranged below the rear axle 4 can swing in the opposite direction of the wheels 14 arranged below the front axle 3, the turning radius of the modular vehicle body 2 can be effectively reduced.

[0046] In order to realize the above function, the steering driving part in the application further includes two groups of second telescopic rods 23, the right ends of the two groups of second telescopic rods 23 are fixed on the same second driving ring 31, the second driving ring 31 is sleeved with a second driving pin 32, the second driving pin 32 is arranged up and down and has a second driving rod 33 fixed at the upper end, the second driving rod 33 is arranged in front and back, and the front and back ends of the second driving rod 33 are respectively connected with vertically arranged third connecting rods 34 along the radial direction, the front and back two groups of third connecting rods 34 are respectively inserted on and rotationally connected with horizontally arranged fourth connecting rods 35, and the right ends of the front and back two groups of third connecting rods 34 are respectively fixedly connected with the front and back two groups of wheel supports 16. The left ends of the two groups of second telescopic rods 23 are respectively sleeved with two groups of inner connecting pins 19 and are rotationally connected with the inner connecting pins 19.

[0047] In the embodiment, the first telescopic rod 22 includes a catheter 36 with one end open, a guide rod 37 is coaxially inserted in the open end of the catheter 36, and the catheter 36 is slidingly connected with the guide rod 37. A damping spring 38 is further arranged between the inner end surface of the guide rod 37 and the inner bottom surface of the catheter 36. The first telescopic rod 22 and the second telescopic rod 23 have the same structure.

[0048] When the modular vehicle body 2 is in a curve, the right ends of the two groups of first telescopic rods 22 move away from the center of the curve, and the first telescopic rods 22 pull the first driving rods 28 through the first driving pins 27; the first driving rods 28 drive the first connecting rods 29 to move outward, and the second connecting rods 30 connected with the first connecting rods 29 rotate and drive the wheel supports 16 to rotate outward under the drive of the first connecting rods 29; the wheel shafts are directed to the center of the curve;

[0049] Similarly, the left ends of the two groups of second telescopic rods 23 move away from the center of the curve, and the third connecting rods 34 move outward, and the fourth connecting rods 35 connected with the third connecting rods 34 rotate and drive the wheel supports 16 to rotate under the drive of the third connecting rods 34; the center of the curve moves to the direction of the wheels 14, that is, the turning radius of the modular vehicle body 2 is reduced;

[0050] However, when the modular vehicle body 2 passes through the curve, if the moving speed of the modular vehicle body 2 does not change, due to the too small turning radius, the centrifugal force will increase, and due to the large load on the upper part of the modular vehicle body 2, the probability of the body inclination of the modular vehicle body 2 when passing through the curve will increase, in order to further reduce the inclination of the modular vehicle body 2 and ensure the safety of transportation;

[0051] In the present application, the support part comprises rollers 39 arranged at the front and rear ends of the limiting blocks 26, the outer ends of each group of rollers 39 are arranged in an inclined manner from top to bottom, and a support rod 40 is coaxially inserted into each group of rollers 39, the support rod 40 is rotatably connected with the roller 39, and the peripheral surface of the roller 39 is always in close contact with the front and rear sides of the flexible transport belt 50; a first horizontal shaft 41 is radially and horizontally arranged at the upper end of each group of support rods 40, and the lower ends of the two groups of support rods 40 are rotatably connected with the front and rear ends of the limiting blocks 26; the first horizontal shaft 41 is rotatably connected with the upper end of the support rod 40; the first horizontal shaft 41 is fixedly connected with the roller posture adjusting structure arranged on the front axle 3; during the process of passing through the curve, the roller posture adjusting structure drives the inclination angle of the roller 39 to change according to the size of the turning radius;

[0052] In the present application, a moving slot 42 is further arranged in the middle part of the front axle 3, the moving slot 42 is horizontally arranged from left to right, and a containing slot 43 is arranged at the top wall of the front and rear ends of the moving slot 42; the roller posture adjusting structure comprises two moving blocks 44 arranged in the moving slot 42 from left to right, a second horizontal shaft 46 is inserted into each group of moving blocks 44 from left to right, and a vertical shaft 47 is radially arranged at the left and right ends of each second horizontal shaft 46; the two vertical shafts 47 are arranged from top to bottom, the lower ends of the two vertical shafts 47 are rotatably connected with the left and right ends of the corresponding second horizontal shaft 46, and the upper ends of the two vertical shafts 47 are fixedly connected with the left and right ends of the corresponding first horizontal shaft 41; by arranging the support rod 40 with a certain length, the left and right second horizontal shafts 46 are arranged inside the corresponding first horizontal shaft 41;

[0053] The compression spring 49 is always in a compressed state; the middle of the moving block 44 is provided with a limiting column 45, the limiting column 45 is arranged in the accommodating through slot 43 and is in sliding arrangement with the accommodating through slot 43, the outer side of each group of limiting columns 45 is provided with a limiting column driving disc 48, the limiting column driving disc 48 is in close contact with the limiting column 45 in the circumferential direction; the eccentric outer connecting pin 12 is arranged on the limiting column driving disc 48 and is in rotating connection with the limiting column driving disc 48, the limiting column driving disc 48 is fixedly arranged with the lower end face of the outer connecting ring 20, the two groups of limiting column driving discs 48 are symmetrically arranged along the front and rear ends of the front axle 3, when the two groups of limiting column driving discs 48 are synchronously rotated counterclockwise, the limiting column driving disc 48 arranged at the front end extrudes the limiting column 45 at the front end backward, the limiting column driving disc 48 at the rear end is away from the limiting column 45 at the rear end, thereby canceling the limiting of the limiting column 45 at the rear end, under the action of the compression spring 49, the limiting column 45 at the rear end moves backward; when the two groups of limiting column driving discs 48 are synchronously rotated clockwise, the limiting column driving disc 48 arranged at the rear end extrudes the limiting column 45 at the rear end forward, the limiting column driving disc 48 at the front end is away from the limiting column 45 at the front end, thereby canceling the limiting of the limiting column 45 at the front end, under the action of the compression spring 49, the limiting column 45 at the front end moves forward.

[0054] In order to further improve the adjustment effect of the drum posture, in the present application, the rear axle 4 has the same structure as the front axle 3, and the drum posture adjustment structure in the rear axle 4 is symmetrically arranged with the drum posture adjustment structure in the front axle 3.

[0055] When the modular vehicle body 2 turns to the front, the distance between the two groups of outer connecting pins 12 at the rear side increases, that is, the distance between the outer ends of the two groups of traction rods 17 at the rear side increases, and the two groups of traction rods 17 at the rear side respectively drive the corresponding outer connecting rings 20 to rotate counterclockwise; the distance between the two groups of outer connecting pins 12 at the front side decreases, that is, the distance between the outer ends of the two groups of traction rods 17 at the front side decreases, and the two groups of traction rods 17 at the front side respectively drive the corresponding outer connecting rings 20 to rotate counterclockwise, the limiting column driving disc 48 arranged at the front end extrudes the limiting column 45 backward, the limiting column driving disc 48 at the rear end is away from the corresponding limiting column 45, and the compression spring 49 drives the limiting column 45 to move backward; at the same time, the vertical shaft 47 connected with the moving block 44 at the front end moves backward, causing the drum 39 arranged at the front end to rotate downward by a set angle; the limiting column driving disc 48 at the front end is away from the corresponding limiting column 45, the compression spring 49 drives the limiting column 45 to move backward, the vertical shaft 47 connected with the moving block 44 at the front end moves backward, causing the drum 39 arranged at the front end to rotate upward by a set angle, and the posture of the flexible conveying belt 50 close to the inner end of the drum 39 inclines inward toward the center of the bend, so that the gravity component of the goods inside the flexible conveying belt 50 offsets the centrifugal force generated by the goods inside the flexible conveying belt 50.

[0056] When the modular vehicle body 2 turns to the rear, the distance between the two groups of outer connecting pins 12 on the front side increases, that is, the distance between the outer ends of the two groups of front traction rods 17 increases, and the two groups of front traction rods 17 drive the corresponding outer connecting rings 20 to rotate clockwise, the distance between the two groups of outer connecting pins 12 on the rear side decreases, that is, the distance between the outer ends of the two groups of rear traction rods 17 decreases, and the two groups of rear traction rods 17 drive the corresponding outer connecting rings 20 to rotate clockwise, the limiting column driving disc 48 arranged at the rear end extrudes the limiting column 45 forward, the limiting column driving disc 48 at the front end is away from the corresponding limiting column 45, and the compression spring 49 drives the limiting column 45 to move forward; at the same time, the vertical shaft 47 connected with the front moving block 44 moves forward, causing the roller 39 arranged at the front end to rotate upward by a set angle; the limiting column driving disc 48 at the front end is away from the corresponding limiting column 45, and the compression spring 49 drives the limiting column 45 to move forward, causing the vertical shaft 47 connected with the moving block 44 at the front end to move forward, and causing the roller 39 arranged at the front end to rotate upward by a set angle; the flexible transport belt 50 close to the inner end of the roller 39 is inclined inward to the bending center, so that the centrifugal force generated by the goods inside the flexible transport belt 50 is offset.

[0057] Therefore, when the modular vehicle body 2 passes through the curve, the centrifugal force generated by the goods inside the flexible transport belt 50 when turning is offset by the change of the posture of the flexible transport belt 50, avoiding the backward inclination of the support part under the action of the centrifugal force, ensuring the safety of transportation under the premise that the modular flexible wheeled belt conveyor does not reduce the turning speed.

Claims

1. A modular flexible wheeled belt conveyor, characterized by: The vehicle head is arranged on the left side, and a plurality of modular vehicle bodies are hingedly connected to the right side of the vehicle head. The plurality of modular vehicle bodies are sequentially hingedly connected in a head-to-tail manner. Each modular vehicle body comprises front and rear axles arranged on the left and right sides, respectively. The lower ends of the front and rear axles are provided with steering portions on the front and rear sides, respectively. Each set of steering portions is provided with a wheel at the lower end. The steering portions are rotationally connected to the corresponding front and rear axles along a vertical axis. A connecting portion is arranged between the front and rear axles. The connecting portion comprises a front traction structure and a rear traction structure. The left and right ends of the front traction structure are hingedly connected to the front ends of the front and rear axles, respectively. The left and right ends of the rear traction structure are hingedly connected to the rear ends of the front and rear axles, respectively. A steering driving portion is further arranged on the inner side of the front and rear traction structures. The steering driving portion is used to drive the steering portions to rotate along the vertical axis within a set range. A support portion is further arranged on the upper end of the front and rear axles. The upper side of the support portion is fixedly connected to a flexible transport belt. The support portion comprises rollers arranged on the front and rear ends of the limiting block. Each set of rollers is arranged in an inclined manner with the outer end on the upper side and the inner end on the lower side. A support rod is coaxially inserted into each set of rollers. The support rod is rotationally connected to the rollers. The peripheral surface of the roller is always in close contact with the front and rear sides of the flexible transport belt. A first horizontal shaft is radially and horizontally arranged on the upper end of each set of support rods. The lower ends of the two sets of support rods are rotationally connected to the front and rear ends of the limiting block, respectively. The first horizontal shaft is rotationally connected to the upper end of the support rod. The first horizontal shaft is fixedly connected to the roller posture adjusting structure arranged on the front axle. A moving slot is further arranged in the middle of the front axle. The moving slot is horizontally arranged on the left and right sides. The top walls at the front and rear ends of the moving slot are provided with accommodating slots, respectively. The posture adjusting structure comprises two moving blocks arranged in the moving slot at the front and rear ends in the left and right directions. A second horizontal shaft is inserted into each set of moving blocks in the left and right directions. The left and right ends of each second horizontal shaft are radially arranged in corresponding vertical shafts, respectively. The two vertical shafts are arranged in an up and down manner. The lower ends of the two vertical shafts are rotationally connected to the left and right ends of the corresponding second horizontal shafts, respectively. The upper ends of the two vertical shafts are fixedly connected to the left and right ends of the corresponding first horizontal shafts, respectively. By arranging the support rod with a set length, the left and right second horizontal shafts are arranged on the inner side of the corresponding first horizontal shafts. A compression spring is arranged between the two sets of moving blocks corresponding to the front and rear. The compression spring is always in a compressed state. A limiting column is arranged in the middle of the moving block. The limiting column is arranged in the accommodating slot in a sliding manner. The outer side of each limiting column is provided with a limiting column driving disc. The limiting column driving disc is in close contact with the limiting column in a circumferential direction.

2. Modular flexible wheeled belt conveyor according to claim 1, characterized in that: An L-shaped trailer hook is fixedly connected to the right end surface of the vehicle head. The L-shaped trailer hook comprises a horizontal support and a vertical support. The left end of the horizontal support is fixedly connected to the vehicle head. The right end of the horizontal support is fixedly connected to the lower part of the vertical support. The upper part of the vertical support is further provided with a spherical anti-dropping joint. A first support column is vertically fixedly arranged at the lower end of the front axle. The first support column is connected to the vertical support through a first connecting plate. The left and right ends of the first connecting plate are provided with a left mounting hole and a right mounting hole, respectively. The vertical support and the first support column are arranged in the corresponding left and right mounting holes, respectively. The vertical support and the first support column are rotationally connected to the corresponding left and right mounting holes, respectively.

3. Modular flexible wheeled belt conveyor according to claim 1, characterized in that: The front axle is a rectangular parallelepiped structure arranged horizontally along the front and back. A limit block is fixedly arranged on the upper end surface of the front axle. The upper end surface of the limit block is provided with an arc-shaped limit groove and is close to the lower end surface of the flexible conveyor belt.

4. Modular flexible wheeled belt conveyor according to claim 3, characterized in that: The left and right ends of the rear traction structure are respectively sleeved on the cylindrical outer connecting pins provided on the upper surfaces of the front and rear end of the front axle, and the left and right ends of the front traction structure are respectively rotatably connected to the corresponding front and rear axle front ends, and the left and right ends of the rear traction structure are respectively sleeved on the cylindrical outer connecting pins provided on the upper surfaces of the rear end of the front and rear axle, and the left and right ends of the rear traction structure are respectively rotatably connected to the front and rear end of the front axle and the rear axle by cylindrical outer connecting pins.

5. Modular flexible wheeled belt conveyor according to claim 4, characterized in that: The front traction structure includes two groups of traction rods arranged on the left and right, and the inner ends of the two groups of traction rods are respectively fixed with inner connecting rings, the two groups of inner connecting rings are coaxially arranged up and down, and the two groups of inner connecting rings are coaxially sleeved with the same group of inner connecting pins, and each group of inner connecting rings is rotatably connected to the inner connecting pins; the outer ends of the two groups of traction rods are respectively fixed with outer connecting rings, the two groups of outer connecting rings are coaxially sleeved with the corresponding outer connecting pins on the upper end surfaces of the front axle and the rear axle, and the two groups of outer connecting rings are rotatably connected to the corresponding two groups of outer connecting pins, and the rear traction structure has the same structure as the front traction structure and is symmetrically arranged front and back; the two groups of inner connecting rings on the rear traction structure and the front traction structure are always on the inner side of the two groups of outer connecting rings.

6. Modular flexible wheeled belt conveyor according to claim 5, characterized in that: The steering drive unit includes two groups of first telescopic rods arranged front and back, the left ends of the two groups of first telescopic rods are fixed on the same group of first driving rings, the first driving rings are sleeved with first driving pins, the first driving pins are arranged up and down and the upper end is fixed with the first driving rod, the first driving rods are arranged front and back and the front and rear ends of the first driving rods are respectively connected to the vertically arranged first connecting rods along the radial direction, the front and rear two groups of first connecting rods are respectively inserted into the left and right horizontally arranged second connecting rods and are rotatably connected to the second connecting rods, the left ends of the front and rear two groups of second connecting rods are respectively fixedly connected to the wheel brackets at the front and rear ends; the right ends of the two groups of first telescopic rods are respectively sleeved with corresponding inner connecting pins and are rotatably connected to the inner connecting pins.

7. Modular flexible wheeled belt conveyor according to claim 6, characterized in that: The turning driving part further comprises two groups of second telescopic rods, right ends of the two groups of second telescopic rods are fixed on a same second driving ring, the second driving ring is sleeved with a second driving pin, the second driving pin is arranged up and down and has a second driving rod fixed on an upper end, the second driving rod is arranged front and back and two ends of the second driving rod are respectively connected with third connecting rods arranged vertically along a radial direction, the two groups of third connecting rods are respectively inserted on fourth connecting rods arranged horizontally left and right and are rotationally connected with the fourth connecting rods, right ends of the two groups of third connecting rods are fixedly connected with wheel supports at respective front and back ends; left ends of the two groups of second telescopic rods are respectively sleeved with two groups of inner connecting pins and are rotationally connected with the inner connecting pins; the first telescopic rod comprises a conduit with an open end, a guide rod is coaxially inserted in the conduit along the open end and the conduit is slidingly connected with the guide rod, a damping spring is further arranged between an inner end surface of the guide rod and an inner bottom surface of the conduit, and the first telescopic rod has the same structure as the second telescopic rod.

8. Modular flexible wheeled belt conveyor according to claim 5, characterized in that: The outer connecting pin is eccentrically arranged through the limiting column driving disc and is rotationally connected with the limiting column driving disc, the limiting column driving disc is fixedly arranged with a lower end surface of the outer connecting ring, and the two groups of limiting column driving discs are symmetrically arranged along front and back ends of the front axle.

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