Belt conveyor

Abstract

The present invention relates to a belt conveyor, which includes a conveyor belt and a plurality of width-adjustable rollers. The plurality of width-adjustable rollers are arranged at intervals along the material conveying direction. At least part of the conveyor belt is disposed above each width-adjustable roller, and the bottom surface of the conveyor belt located above each width-adjustable roller is in contact with the top of each width-adjustable roller. The width-adjustable roller includes a mounting frame and at least two first rollers. The two first rollers are respectively slidably disposed on the mounting frame. A driving device is provided on the mounting frame, and the action ends of the driving device are respectively connected to the two first rollers. The driving device drives at least one first roller to slide on the mounting frame to adjust the distance between the two first rollers. The present invention solves the technical problems of poor adjustable performance and limited application range of the belt conveyor.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and particularly to a belt conveyor. Background Art

[0002] The belt conveyor is an important part of the muck transportation system of the shield machine. The mobile belt conveyor is widely used due to its flexible and light characteristics (such as: used in industries such as mines, ports, power, and steel, as well as in places such as stockyards, storage yards, and grain depots). The existing mobile belt conveyors can be divided into three categories. The first category is the belt conveyor with a fixed frame length, which has the characteristics of simple structure and low cost and is suitable for use in some fixed places with continuous operations. The second category is the belt conveyor with walking wheels arranged under the frame, which can be dragged forward and backward as a whole by manpower or machine. The third category is the belt conveyor with a variable frame length, which can adjust the length of the belt according to different application scenarios, thereby controlling the conveying distance.

[0003] However, the current mobile belt conveyors mainly have the following deficiencies:

[0004] First, the belt conveyor cannot move by itself and requires auxiliary dragging.

[0005] Second, the functions are simple, it cannot be telescoped, cannot automatically rotate, and the elevation angle of the belt conveyor cannot be changed.

[0006] Third, it can only achieve the adjustment in the length direction of the belt conveyor and cannot adjust the width of the belt conveyor.

[0007] Fourth, for pallets with different heights, only manual operation can be carried out. It cannot automatically adjust the height of the output end of the conveyor, nor can it adjust the left and right positions of the output end of the conveyor. During loading and unloading, the position of the output end of the conveyor needs to be continuously adjusted, resulting in a very high working intensity for the loading and unloading vehicle drivers and operators and extremely low production efficiency.

[0008] In view of the problem of poor adjustability and limited application range of the belt conveyor in the related art, no effective solution has been given yet.

[0009] Therefore, based on the experience and practice of being engaged in the related industry for many years, the inventor of the present invention proposes a belt conveyor to overcome the defects of the prior art. Summary of the Invention

[0010] The purpose of the present invention is to provide a belt conveyor. The adjustable structure of the idler can adapt to belts of different widths, so that the belt conveyor can not only be adjusted in length, but also meet the adjustment requirements for the belt width, making the application range of the belt conveyor wider.

[0011] Another object of the present invention is to provide a belt conveyor that can automatically move and has an adjustable slope of the belt, improving the conveying efficiency of materials and reducing the labor intensity of personnel.

[0012] The object of the present invention can be achieved by the following solutions:

[0013] The present invention provides a belt conveyor, which includes a conveyor belt and a plurality of width-adjustable rollers. The plurality of width-adjustable rollers are arranged at intervals along the material conveying direction. At least part of the conveyor belt is disposed above each of the width-adjustable rollers, and the bottom surface of the conveyor belt located above each of the width-adjustable rollers is in contact with the top of each of the width-adjustable rollers;

[0014] The width-adjustable roller includes a mounting frame and at least two first rollers. The two first rollers are respectively slidably disposed on the mounting frame. A driving device is provided on the mounting frame. The action ends of the driving device are respectively connected to the two first rollers. The driving device drives at least one of the first rollers to slide on the mounting frame to adjust the distance between the two first rollers.

[0015] In a preferred embodiment of the present invention, the belt conveyor further includes a feeding device and a discharging device, and the feeding device and the discharging device are respectively disposed at both ends of the conveyor belt.

[0016] In a preferred embodiment of the present invention, the feeding device includes a feeding main body, which is a cylindrical structure with a feeding port and a blanking port at the top and bottom respectively. The feeding main body is disposed above the material input end of the conveyor belt so that the material output through the blanking port falls onto the conveyor belt;

[0017] A plurality of adjusting plates are provided at the lower part of the feeding main body. Each of the adjusting plates encloses to form the blanking port. At least part of the tops of the adjusting plates are hinged to the bottom of the feeding main body. A connecting member is provided on the outer wall of the feeding main body. The connecting member is hinged to one end of an adjusting cylinder, and the other end of the adjusting cylinder is hinged to the adjusting plate.

[0018] In a preferred embodiment of the present invention, the internal area of the feeding main body gradually decreases from the feeding port to the blanking port direction.

[0019] In a preferred embodiment of the present invention, a material collection port is provided at the top of the discharging device, and the material output end of the conveyor belt extends into the interior of the discharging device.

[0020] In a preferred embodiment of the present invention, the belt conveyor further includes at least two first lifting devices, and the two first lifting devices are respectively arranged at both ends of the conveyor belt and below the conveyor belt to adjust the slope of the conveyor belt in the material conveying direction.

[0021] In a preferred embodiment of the present invention, the belt conveyor further includes a traveling device, and the traveling device is arranged below the conveyor belt.

[0022] In a preferred embodiment of the present invention, the number of the traveling devices is multiple, and the multiple traveling devices are respectively arranged below the corresponding width-adjustable idlers;

[0023] Each traveling device includes a second lifting device and a driving wheel. The top of the second lifting device is connected to the bottom of the corresponding width-adjustable idler, and the driving wheel is arranged at the bottom of the second lifting device.

[0024] In a preferred embodiment of the present invention, the belt conveyor further includes a scissor structure formed by hinging a plurality of connecting rods. Both ends of the scissor structure are respectively connected to both ends of the conveyor belt to adjust the distance between both ends of the conveyor belt.

[0025] In a preferred embodiment of the present invention, the belt conveyor further includes a tensioning device for adjusting the tension state of the conveyor belt. The tensioning device includes a tensioning roller, a tensioning idler, a swing cylinder, a stretching cylinder and a connecting rod. The tensioning roller is arranged below the belt roller. The rotating shaft of the tensioning roller is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to a preset fixed position at one end of the conveyor belt. One end of the swing cylinder is hinged to the middle of the connecting rod. The other end of the swing cylinder is hinged to the preset fixed position, and the height of the hinge point between the connecting rod and the preset fixed position is less than the height of the hinge point between the swing cylinder and the preset fixed position;

[0026] The tensioning idler is located above the tensioning roller. One end of the stretching cylinder is connected to the rotating shaft of the tensioning idler, and one end of the stretching cylinder is connected to the preset fixed position, and the height of the hinge point between the swing cylinder and the preset fixed position is less than the height of the connection point between the stretching cylinder and the preset fixed position;

[0027] The conveyor belt sequentially bypasses the tensioning idler, the tensioning roller and the belt roller along the material conveying direction. The outer ring of the conveyor belt is in contact with the outer wall of the tensioning idler on the side close to the belt roller. The inner ring of the conveyor belt is in contact with the outer wall of the tensioning roller on the side far from the belt roller. The inner ring of the conveyor belt is in contact with the outer wall of the belt roller on the side far from the tensioning idler.

[0028] In a preferred embodiment of the present invention, the width-adjustable roller further includes at least one second roller, the second roller is disposed on the mounting frame and located between the two first rollers, and one of the first rollers, the second roller, and the other first roller are arranged along the width direction of the conveyor belt.

[0029] In a preferred embodiment of the present invention, the rotating shaft of the second roller is arranged horizontally, and the rotating shafts of the two first rollers are gradually inclined downward from a direction away from the second roller to a direction close to the second roller.

[0030] In a preferred embodiment of the present invention, the width-adjustable roller further includes two first mounting members disposed on the mounting frame, and both ends of the rotating shaft of the second roller are respectively hinged to the corresponding first mounting members.

[0031] In a preferred embodiment of the present invention, a slideway extending along the width direction of the conveyor belt is provided on the mounting frame, a first slider is provided on the first mounting member, and the first slider is slidably disposed on the slideway to adjust the position of the second roller in the width direction of the conveyor belt.

[0032] In a preferred embodiment of the present invention, the width-adjustable roller further includes two second mounting members and two third mounting members, the two second mounting members and the two third mounting members are both movably arranged on the mounting frame along the width direction of the conveyor belt, one of the second mounting members and one of the third mounting members are respectively hinged to both ends of the rotating shaft of one of the first rollers, and the other second mounting member and the other third mounting member are respectively hinged to both ends of the rotating shaft of the other first roller.

[0033] In a preferred embodiment of the present invention, the height of the hinged position of the second mounting member and the first roller is less than the height of the hinged position of the third mounting member and the first roller, so that the first roller is inclined.

[0034] In a preferred embodiment of the present invention, a slideway extending along the width direction of the conveyor belt is provided on the mounting frame, second sliders and third sliders are respectively provided on the second mounting member and the third mounting member, and the second sliders and the third sliders are respectively slidably disposed on the slideway.

[0035] In a preferred embodiment of the present invention, a first mounting portion and a second mounting portion are respectively provided at the tops of the second mounting member and the third mounting member, and both ends of the rotating shaft of the first roller are respectively hinged to the corresponding first mounting portion and the second mounting portion.

[0036] In a preferred embodiment of the present invention, the driving device is a driving cylinder, and an extension portion is provided at the bottom of the second mounting member. The end of the piston rod of the driving cylinder is connected to the extension portion to push the first roller to slide in the width direction of the conveyor belt.

[0037] As described above, two first rollers are slidably provided on the mounting frame, and a driving device is provided on the mounting frame. The action ends of the driving device are respectively connected to the two first rollers. By controlling the driving device, at least one first roller can be driven to slide on the mounting frame, thereby adjusting the distance between the two first rollers. Since the conveyor belt needs to be supported by the two first rollers, different distances between the two first rollers can be adapted to conveyor belts of different widths, enabling the belt conveyor to adjust the width of the conveyor belt while the existing length is adjustable, improving the adjustability of the belt conveyor and making the belt conveyor have a wider application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention.

[0039] Wherein:

[0040] Figure 1 : is a schematic structural diagram of the belt conveyor of the present invention.

[0041] Figure 2 : is a schematic structural diagram of the feeding device in the belt conveyor of the present invention.

[0042] Figure 3 : is a schematic structural diagram of the tensioning device in the belt conveyor of the present invention.

[0043] Figure 4 : is a perspective view of the width-adjustable roller in the belt conveyor of the present invention.

[0044] Figure 5 : is a front view of the width-adjustable roller in the belt conveyor of the present invention.

[0045] Figure 6 : is a schematic structural diagram of the second mounting member of the width-adjustable roller in the belt conveyor of the present invention.

[0046] 1. Mounting frame; 101. Slideway;

[0047] 2. Second roller; 3. First roller;

[0048] 4. First mounting member; 401. First slider;

[0049] 5. Second mounting member; 501. First mounting portion;

[0050] 502. Second slider; 503. Extension portion;

[0051] 6. Third mounting member; 601. Second mounting portion;

[0052] 602. Third slider; 7. Driving device;

[0053] 10. Feeding device; 1001. Feeding main body;

[0054] 1002. Adjusting plate; 1003. Connecting member;

[0055] 1004. Adjusting cylinder; 1005. Feeding port;

[0056] 20. Discharging device; 2001. Material collection port;

[0057] 30. Conveyor belt; 40. Width-adjustable idler;

[0058] 50. Traveling device; 5001. Second lifting device;

[0059] 5002. Driving wheel; 5003. Scissor structure member;

[0060] 60. Tensioning device; 6001. Tensioning roller;

[0061] 6002. Tensioning idler; 6003. Swing cylinder;

[0062] 6004. Stretching cylinder; 6005. Connecting rod;

[0063] 70. First lifting device; 80. Belt roller. Detailed implementation manners

[0064] For a clearer understanding of the technical features, objectives, and effects of the present invention, the detailed implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0065] As Figure 1 , Figure 4As shown in the figure, the present invention provides a belt conveyor, which includes a conveyor belt 30 and a plurality of the above-mentioned width-adjustable rollers 40. The plurality of width-adjustable rollers 40 are arranged at intervals and evenly along the material conveying direction. At least part of the conveyor belt 30 is disposed above each width-adjustable roller 40, and the bottom surface of the conveyor belt 30 located above each width-adjustable roller 40 is in contact with the top of each width-adjustable roller 40. Among them, the width-adjustable roller 40 is used to support the conveyor belt 30. The width-adjustable roller 40 includes a mounting frame 1 and at least two first rollers 3. The two first rollers 3 are respectively slidably disposed on the mounting frame 1. A driving device 7 is arranged on the mounting frame 1. The action ends of the driving device 7 are respectively connected to the two first rollers 3. The driving device 7 drives at least one first roller 3 to slide on the mounting frame 1 to adjust the distance between the two first rollers 3.

[0066] In the present invention, two first rollers 3 are slidably disposed on the mounting frame 1, and a driving device 7 is arranged on the mounting frame 1. The action ends of the driving device 7 are respectively connected to the two first rollers 3. By controlling the driving device 7, at least one first roller 3 can be driven to slide on the mounting frame 1, thereby adjusting the distance between the two first rollers 3. Since the conveyor belt 30 needs to be supported by the two first rollers 3, different distances between the two first rollers 3 can be adapted to conveyor belts 30 of different widths, enabling the belt conveyor to adjust the width of the conveyor belt 30 while the existing length is adjustable, improving the adjustable ability of the belt conveyor and making the belt conveyor have a wider application range.

[0067] Further, the driving device 7 can be used to drive the two first rollers 3 to slide on the mounting frame 1 simultaneously to achieve the purpose of adjusting the distance between the two first rollers 3. Of course, when one first roller 3 is fixed, the driving device 7 can also be used to drive only the other first roller 3 to slide on the mounting frame 1 to achieve the purpose of adjusting the distance between the two first rollers 3.

[0068] In an alternative embodiment of the present invention, as Figure 4 、 Figure 5 shown, the width-adjustable roller 40 further includes at least one second roller 2. The second roller 2 is disposed on the mounting frame 1 and located between the two first rollers 3. One first roller 3, the second roller 2, and the other first roller 3 are arranged along the width direction of the conveyor belt 30. The second roller 2 mainly plays a role in supporting the conveyor belt 30 to ensure the stable conveyance of materials by the conveyor belt 30. The two first rollers 3 play a role in supporting and adjusting the width to achieve the purpose of being applicable to conveyor belts 30 of different widths.

[0069] Further, as Figure 4 、 Figure 5As shown, the rotating shaft of the second idler roller 2 is arranged in the horizontal direction, and the rotating shafts of the two first idler rollers 3 are both gradually inclined downward from the direction away from the second idler roller 2 to the direction close to the second idler roller 2. The second idler roller 2 and the two first idler rollers 3 cooperate to make the cross-section of the conveyor belt 30 in the supported state arc-shaped (that is, the height of the middle position of the conveyor belt 30 is less than the height of its two side edge positions), so as to convey the material by the conveyor belt 30 and prevent the material from falling from the two side edges of the conveyor belt 30 during the conveying process.

[0070] Furthermore, the number of the second idler rollers 2 can be one. Of course, the number of the second idler rollers 2 can be multiple, and the multiple second idler rollers 2 are arranged along the width direction of the conveyor belt 30. The specific number of the second idler rollers 2 can be set according to the actual width of the conveyor belt 30.

[0071] In an alternative embodiment of the present invention, as Figure 4 、 Figure 5 shown, the width-adjustable idler roller 40 further includes two first mounting members 4 arranged on the mounting frame 1, and both ends of the rotating shaft of the second idler roller 2 are respectively hinged to the corresponding first mounting members 4. The second idler roller 2 is mounted on the mounting frame 1 through the two first mounting members 4, and it will not affect the normal rotation of the roller of the second idler roller 2.

[0072] Furthermore, the second idler roller 2 can be fixedly arranged on the mounting frame 1 through the first mounting member 4. Of course, the first mounting member 4 can also be slidably arranged on the mounting frame 1 to make the second idler roller 2 movable within a certain range. Specifically, as Figure 4 、 Figure 5 shown, when the second idler roller 2 is movably arranged, a slideway 101 extending along the width direction of the conveyor belt 30 is arranged on the mounting frame 1, and a first slider 401 is arranged on the first mounting member 4. The first slider 401 is slidably arranged on the slideway 101. By adjusting the position of the first slider 401 on the slideway 101, the position of the second idler roller 2 in the width direction of the conveyor belt 30 can be adjusted. Specifically, the slideway 101 can be a long hole opened on both sides of the mounting frame 1 along the width direction of the conveyor belt 30, and the first slider 401 is a columnar structure respectively arranged on both sides of the first mounting member 4. The columnar structures on the first mounting member 4 are respectively slidably embedded in the corresponding long holes so that the first mounting member 4 can slide along the width direction of the conveyor belt 30.

[0073] In an alternative embodiment of the present invention, as Figure 4 、 Figure 5As shown, the width-adjustable idler 40 further includes two second mounting members 5 and two third mounting members 6. The two second mounting members 5 and the two third mounting members 6 are both arranged on the mounting frame 1 so as to be movable in the width direction of the conveyor belt. One second mounting member 5 and one third mounting member 6 are respectively hinged to the two ends of the rotating shaft of one first idler 3, and the other second mounting member 5 and the other third mounting member 6 are respectively hinged to the two ends of the rotating shaft of the other first idler 3. The first idler 3 is slidably mounted on the mounting frame 1 through the cooperation of the second mounting member 5 and the third mounting member 6, and it will not affect the normal rotation of the roller of the first idler 3. Among them, the height of the hinged position of the second mounting member 5 and the first idler 3 is less than the height of the hinged position of the third mounting member 6 and the first idler 3, so that the first idler 3 is inclined.

[0074] Further, as Figure 4 , Figure 5 shown, since a slideway 101 extending in the width direction of the conveyor belt 30 is provided on the mounting frame 1, a second slider 502 is provided on the second mounting member 5, and a third slider 602 is provided on the third mounting member 6. The second slider 502 and the third slider 602 are respectively slidably arranged on the slideway 101. By adjusting the positions of the second slider 502 and the third slider 602 on the slideway 101, the position of the first idler 3 on the mounting frame 1 can be adjusted, and further the different widths adapted by the two first idlers 3 can be adjusted. Among them, the second slider 502 and the third slider 602 can be arranged on the same slideway 101, or can be respectively arranged on different slideways 101 arranged at intervals in the width direction of the conveyor belt 30. Specifically, the slideway 101 can be a long hole opened on both sides of the mounting frame 1 in the width direction of the conveyor belt 30. The second slider 502 is a columnar structure respectively arranged on both sides of the second mounting member 5, and the third slider 602 is a columnar structure respectively arranged on both sides of the third mounting member 6. The columnar structures on the second mounting member 5 and the third mounting member 6 are respectively slidably embedded in the corresponding long holes, so that the second mounting member 5 and the third mounting member 6 can slide in the width direction of the conveyor belt 30.

[0075] Further, as Figure 4 , Figure 6 shown, a first mounting portion 501 is provided at the middle position of the top of the second mounting member 5, and a second mounting portion 601 is provided at the middle position of the top of the third mounting member 6. The two ends of the rotating shaft of the first idler 3 are respectively hinged to the corresponding first mounting portion 501 and the second mounting portion 601 to ensure that the first idler 3 is mounted on the mounting frame 1 through the second mounting member 5 and the third mounting member 6, and it will not affect the normal rotation of the roller of the first idler 3. Among them, as Figure 1 , Figure 3As shown, the first mounting portion 501 and the second mounting portion 601 are respectively clamping grooves, and both ends of the rotating shaft of the first idler 3 are rotatably embedded in the corresponding clamping grooves.

[0076] In an alternative embodiment of the present invention, as Figure 5 , Figure 6 shown, the driving device 7 can be, but is not limited to, a driving cylinder (oil cylinder). An extension portion 503 is provided at the bottom of the second mounting member 5. The extension portion 503 extends downward to the lower side of the mounting frame 1. The driving cylinder is arranged below the mounting frame 1, and the end of the piston rod of the driving cylinder is connected to the extension portion 503. By controlling the telescopic amount of the piston rod of the driving cylinder, the first idler 3 is pushed to slide in the width direction of the conveyor belt 30.

[0077] In an alternative embodiment of the present invention, as Figure 1 shown, the belt conveyor further includes a feeding device 10 and a discharging device 20. The feeding device 10 is arranged at the material input end of the conveyor belt 30, and the discharging device 20 is arranged at the material output end of the conveyor belt 30.

[0078] Furthermore, as Figure 1 , Figure 2 shown, the feeding device 10 includes a feeding main body 1001. The feeding main body 1001 is a rectangular cylindrical structure with a feeding port 1005 and a blanking port at the top and bottom respectively. The feeding main body 1001 is fixedly arranged above the material input end of the conveyor belt 30, so that the material output through the blanking port directly falls onto the conveyor belt 30. A plurality of adjusting plates 1002 are arranged at the lower part of the feeding main body 1001. Each adjusting plate 1002 encloses to form a blanking port. At least part of the top of the adjusting plate 1002 is hinged to the bottom edge of the feeding main body 1001. A rod-shaped connecting member 1003 is arranged on the outer wall of the feeding main body 1001. The top of the connecting member 1003 is fixedly connected to the outer wall of the feeding main body 1001. The bottom of the connecting member 1003 extends downward and is hinged to one end of an adjusting cylinder 1004 (oil cylinder). The other end of the adjusting cylinder 1004 is hinged to the bottom of the adjusting plate 1002. By controlling the telescopic amount of the piston rod of the adjusting cylinder 1004, the swinging position of the adjusting plate 1002 can be driven, and then the opening amplitude of the blanking port can be adjusted, and further the size of the blanking port can be controlled, so that the width of the blanking port can be adapted to conveyor belts 30 of different widths, ensuring that all the materials output through the blanking port can fall onto the conveyor belt 30, and at the same time, the conveying speed of the materials can be controlled. Among them, multiple adjusting cylinders 1004 can be correspondingly arranged for each adjusting plate 1002, and the multiple adjusting cylinders 1004 are arranged at intervals and evenly along the width direction of the adjusting plate 1002. The swinging position of the adjusting plate 1002 is controlled by the joint action of the multiple adjusting cylinders 1004.

[0079] Furthermore, as Figure 2As shown, the interior of the feeding main body 1001 has an area that gradually decreases from the feeding port 1005 to the blanking port direction (such as a flared structure that gradually decreases from the feeding port 1005 to the blanking port direction), which plays a role in guiding the material flow and ensures the smooth output of the material to the conveyor belt 30.

[0080] Furthermore, as Figure 1 shown, a material collection port 2001 is provided at the top of the discharging device 20. The discharging device 20 is fixedly connected to the material output end of the conveyor belt 30, and the material output end of the conveyor belt 30 extends into the interior of the discharging device 20 to convey the material into the discharging device 20.

[0081] In an alternative embodiment of the present invention, as Figure 1 shown, the belt conveyor further includes at least two first lifting devices 70. The two first lifting devices 70 are respectively arranged at both ends of the conveyor belt 30 and below the conveyor belt 30. According to the needs of the actual conveying environment, the height of the first lifting device 70 can be adjusted, thereby adjusting the slope of the conveyor belt 30 in the material conveying direction and realizing the conveying of materials at different slopes.

[0082] Furthermore, the tops of the two first lifting devices 70 can be respectively connected to the feeding device 10 and the discharging device 20. Among them, the first lifting device 70 can be, but is not limited to, a mobile scissor lift table, and the lifting function can also be realized through an oil cylinder, or a cooperating structure of gears and racks, etc.

[0083] In an alternative embodiment of the present invention, as Figure 1 shown, the belt conveyor further includes a traveling device 50. The traveling device 50 is arranged below the conveyor belt 30.

[0084] Specifically, as Figure 1 shown, the number of the traveling devices 50 is multiple, and the multiple traveling devices 50 are respectively arranged below the corresponding width-adjustable idlers 40; each traveling device 50 further includes a second lifting device 5001 and a driving wheel 5002. The top of the second lifting device 5001 is connected to the bottom of the corresponding width-adjustable idler 40, and the driving wheel 5002 is arranged at the bottom of the second lifting device 5001. The lifting height of each second lifting device 5001 can be adjusted according to the slope of the conveyor belt 30, thereby realizing the overall slope adjustment of the conveyor belt 30 and the support for the conveyor belt 30.

[0085] Further, the second lifting device 5001 can be, but is not limited to, a telescopic rod arranged in the vertical direction, and the driving wheel 5002 can be, but is not limited to, a heavy-duty steering wheel, which can realize self-driven walking and steering. On the premise that a self-driven driving wheel 5002 is arranged at the bottom of the walking device 50, casters are arranged at the bottom of the first lifting device 70, and the casters can be either casters with self-driving motors or without self-driving functions, and they walk under the drive of the driving wheel 5002 at the bottom of the walking device 50.

[0086] In an alternative embodiment of the present invention, as Figure 1 shown, the belt conveyor further includes a scissor structure member 5003, which is a scissor structure formed by hinging a plurality of connecting rods. Both ends of the scissor structure member 5003 are respectively connected to both ends of the conveyor belt 30 to adjust the distance between both ends of the conveyor belt 30, and thus the length of the conveyor belt 30 can be adjusted. Specifically, one end of the scissor structure member 5003 is connected to the feeding device 10, and the other end of the scissor structure member 5003 is connected to the discharging device 20.

[0087] In an alternative embodiment of the present invention, as Figure 3 shown, the belt conveyor further includes a tensioning device 60 for adjusting the tension state of the conveyor belt 30. The tensioning device 60 includes a tensioning roller 6001, a tensioning roller 6002, a swing cylinder 6003 (oil cylinder), a stretching cylinder 6004 (oil cylinder), and a connecting rod 6005. The tensioning roller 6001 is arranged below the belt roller 80. The rotating shaft of the tensioning roller 6001 is hinged to one end of the connecting rod 6005, and the other end of the connecting rod 6005 is hinged to a preset fixed position at one end of the conveyor belt 30. One end of the swing cylinder 6003 is hinged to the middle of the connecting rod 6005, and the other end of the swing cylinder 6003 is hinged to the preset fixed position, and the height of the hinge point between the connecting rod 6005 and the preset fixed position is less than the height of the hinge point between the swing cylinder 6003 and the preset fixed position; the tensioning roller 6002 is located above the tensioning roller 6001. One end of the stretching cylinder 6004 is connected to the rotating shaft of the tensioning roller 6002, and one end of the stretching cylinder 6004 is connected to the preset fixed position, and the height of the hinge point between the swing cylinder 6003 and the preset fixed position is less than the height of the connection point between the stretching cylinder 6004 and the preset fixed position; the conveyor belt 30 sequentially bypasses the tensioning roller 6002, the tensioning roller 6001, and the belt roller 80 along the material conveying direction. The outer ring of the conveyor belt 30 is in contact with the outer wall of the tensioning roller 6002 on the side close to the belt roller 80, the inner ring of the conveyor belt 30 is in contact with the outer wall of the tensioning roller 6001 on the side far from the belt roller 80, and the inner ring of the conveyor belt 30 is in contact with the outer wall of the belt roller 80 on the side far from the tensioning roller 6002. Among them, the preset fixed position is the feeding device 10 connected to one end of the conveyor belt 30.

[0088] The working principle of the tensioning device 60 is as follows: When it is necessary to shorten the length of the conveyor belt 30, the tensioning device 60 needs to be adjusted to tension the conveyor belt 30. By controlling the piston rod of the swing cylinder 6003 to extend, the tensioning roller 6001 is moved a certain angle in the clockwise direction. At the same time, by controlling the piston rod of the stretching cylinder 6004 to contract, the tensioning roller 6002 is moved horizontally towards the belt roller 80, and the tensioning operation of the conveyor belt 30 can be completed. When it is necessary to extend the length of the conveyor belt 30, the tensioning device 60 needs to be adjusted to relax the conveyor belt 30. By controlling the piston rod of the swing cylinder 6003 to contract, the tensioning roller 6001 is moved a certain angle in the counterclockwise direction. At the same time, by controlling the piston rod of the stretching cylinder 6004 to extend, the tensioning roller 6002 is moved horizontally away from the belt roller 80, and the conveyor belt 30 can be relaxed to complete the elongation operation of the conveyor belt 30.

[0089] The characteristics and advantages of the belt conveyor of the present invention are as follows:

[0090] First, the belt conveyor can adjust three variables: length, width, and gradient. At the same time, it can realize the self-propelled control of the belt conveyor, which is convenient for material transportation, suitable for different material transportation environments, greatly improves the material transportation efficiency, reduces the manual labor intensity, and is suitable for wide promotion and use.

[0091] Second, the belt conveyor is provided with width-adjustable rollers, so that while the length of the belt conveyor is adjustable, the width of the conveyor belt 30 can be adjusted, improving the adjustable ability of the belt conveyor and making the belt conveyor have a wider application range.

[0092] The above is only a schematic specific embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A belt conveyor, characterized in that, The belt conveyor includes a conveyor belt and a plurality of width-adjustable rollers. The plurality of width-adjustable rollers are arranged at intervals along the material conveying direction. At least part of the conveyor belt is disposed above each of the width-adjustable rollers, and the bottom surface of the conveyor belt located above each of the width-adjustable rollers is in contact with the top of each of the width-adjustable rollers; The width-adjustable roller includes a mounting frame and at least two first rollers. The two first rollers are respectively slidably disposed on the mounting frame. A driving device is disposed on the mounting frame. The action ends of the driving device are respectively connected to the two first rollers. The driving device drives at least one of the first rollers to slide on the mounting frame to adjust the distance between the two first rollers; The width-adjustable roller further includes at least one second roller. The second roller is disposed on the mounting frame and between the two first rollers. One first roller, the second roller, and the other first roller are arranged along the width direction of the conveyor belt. The width-adjustable roller further includes two first mounting members disposed on the mounting frame. The two ends of the rotating shaft of the second roller are respectively hinged to the corresponding first mounting members. A slideway extending along the width direction of the conveyor belt is disposed on the mounting frame. A first slider is disposed on the first mounting member. The first slider is slidably disposed on the slideway to adjust the position of the second roller in the width direction of the conveyor belt; The width-adjustable roller further includes two second mounting members and two third mounting members. The two second mounting members and the two third mounting members are both movably disposed on the mounting frame along the width direction of the conveyor belt. One second mounting member and one third mounting member are respectively hinged to the two ends of the rotating shaft of one first roller, and the other second mounting member and the other third mounting member are respectively hinged to the two ends of the rotating shaft of the other first roller. A slideway extending along the width direction of the conveyor belt is disposed on the mounting frame. Second sliders and third sliders are respectively disposed on the second mounting member and the third mounting member. The second sliders and the third sliders are respectively slidably disposed on the slideway.

2. The belt conveyor according to claim 1, wherein The belt conveyor further includes a feeding device and a discharging device. The feeding device and the discharging device are respectively disposed at two ends of the conveyor belt.

3. The belt conveyor according to claim 2, characterized in that, The feeding device includes a feeding main body. The feeding main body is a cylindrical structure having a feeding port and a blanking port at the top and bottom respectively. The feeding main body is disposed above the material input end of the conveyor belt so that the material output through the blanking port falls onto the conveyor belt; A plurality of adjusting plates are disposed at the lower part of the feeding main body. Each of the adjusting plates encloses to form the blanking port. At least part of the tops of the adjusting plates are hinged to the bottom of the feeding main body. A connecting member is disposed on the outer wall of the feeding main body. The connecting member is hinged to one end of an adjusting cylinder, and the other end of the adjusting cylinder is hinged to the adjusting plate.

4. The belt conveyor according to claim 3, characterized in that, The internal area of the feeding main body gradually decreases from the feeding port to the blanking port direction.

5. The belt conveyor according to claim 2, wherein A material collection port is provided at the top of the discharging device, and the material output end of the conveyor belt extends into the discharging device.

6. The belt conveyor according to claim 2, wherein, The belt conveyor further includes at least two first lifting devices, and the two first lifting devices are respectively arranged at both ends of the conveyor belt and below the conveyor belt to adjust the gradient of the conveyor belt in the material conveying direction.

7. The belt conveyor according to claim 1, characterized in that, The belt conveyor further includes a traveling device, and the traveling device is arranged below the conveyor belt.

8. The belt conveyor according to claim 7, characterized in that, The number of the traveling devices is multiple, and the multiple traveling devices are respectively arranged below the corresponding width-adjustable idlers; Each traveling device includes a second lifting device and a driving wheel. The top of the second lifting device is connected to the bottom of the corresponding width-adjustable idler, and the driving wheel is arranged at the bottom of the second lifting device.

9. The belt conveyor according to claim 2, characterized in that, The belt conveyor further includes a shear fork structure formed by hinging a plurality of connecting rods. Both ends of the shear fork structure are respectively connected to both ends of the conveyor belt to adjust the distance between both ends of the conveyor belt.

10. The belt conveyor according to claim 2 or 9, characterized in that, The belt conveyor further includes a tensioning device for adjusting the tension state of the conveyor belt. The tensioning device includes a tensioning roller, a tensioning idler, a swing cylinder, a stretching cylinder and a connecting rod. The tensioning roller is arranged below the belt roller, and the rotating shaft of the tensioning roller is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to a preset fixed position at one end of the conveyor belt. One end of the swing cylinder is hinged to the middle of the connecting rod, and the other end of the swing cylinder is hinged to the preset fixed position. And the height of the hinge point between the connecting rod and the preset fixed position is less than the height of the hinge point between the swing cylinder and the preset fixed position; The tensioning idler is located above the tensioning roller. One end of the stretching cylinder is connected to the rotating shaft of the tensioning idler, and one end of the stretching cylinder is connected to the preset fixed position. And the height of the hinge point between the swing cylinder and the preset fixed position is less than the height of the connection point between the stretching cylinder and the preset fixed position; The conveyor belt sequentially bypasses the tensioning idler, the tensioning roller and the belt roller along the material conveying direction. The outer ring of the conveyor belt is in contact with the outer wall of the tensioning idler on the side close to the belt roller, the inner ring of the conveyor belt is in contact with the outer wall of the tensioning roller on the side far from the belt roller, and the inner ring of the conveyor belt is in contact with the outer wall of the belt roller on the side far from the tensioning idler.

11. The belt conveyor according to claim 1, wherein, The rotating shaft of the second idler is arranged horizontally, and the rotating shafts of the two first idlers are gradually inclined downward from the direction away from the second idler to the direction close to the second idler.

12. The belt conveyor according to claim 1, characterized in that, The height of the hinged position of the second mounting member and the first idler is less than the height of the hinged position of the third mounting member and the first idler, so that the first idler is inclined.

13. The belt conveyor according to claim 1, characterized in that, The top of the second mounting member and the top of the third mounting member are respectively provided with a first mounting portion and a second mounting portion, and both ends of the rotating shaft of the first idler are respectively hinged to the corresponding first mounting portion and second mounting portion.

14. The belt conveyor according to claim 1, characterized in that, The driving device is a driving cylinder. An extension part is arranged at the bottom of the second mounting part. The end of the piston rod of the driving cylinder is connected to the extension part to push the first idler to slide in the width direction of the conveyor belt.

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