Long-distance dustproof conveyor

Abstract

The present application relates to sand mine conveyor technical field, especially for long haul dustproof conveyor, including several conveyors, the conveyor is provided with side frame on both sides of its width direction, the both ends of the length direction of side frame are respectively provided with first support leg and second support leg, wherein, the rotation axis of first support leg and second support leg are parallel with the axis of driven roller on the conveyor; The conveyor is provided with dust removal device, for removing dust generated in the process of material conveying; Long haul dustproof conveyor further includes first mounting bracket and second mounting bracket, first mounting bracket is used for supporting two first support legs; Second mounting bracket includes two vertically arranged second vertical frame, two second vertical frame are used for supporting two second support legs respectively; The end of side frame close to second support leg is provided with through hole. The present application can prolong the service life of conveyor, reduce its failure rate and maintenance cost, and avoid the phenomenon of slipping.

Description

Technical Field

[0001] This invention relates to the field of conveyor technology for sand and gravel mines, specifically a long-distance dustproof conveyor. Background Technology

[0002] As an indispensable source of building materials for infrastructure construction in my country, sand and gravel mines hold a pivotal position. With the booming development of my country's economy and the continuous acceleration of urbanization, various infrastructure projects are springing up like mushrooms after rain, leading to a daily increase in the demand for sand and gravel. This huge market demand has opened up vast development space and brought unprecedented opportunities to the sand and gravel mine conveyor industry.

[0003] However, current sand and gravel mine conveyors still face many problems in practical applications. On the one hand, some traditional conveyors failed to fully and thoroughly consider the complex and ever-changing working environment of mines during the design phase. During the conveying of materials such as ore, a large amount of dust is inevitably generated, causing the conveyors to operate under harsh conditions of high dust levels for extended periods. This harsh working environment significantly affects the performance and service life of the conveyors, leading to frequent equipment failures, increased maintenance costs and downtime, and ultimately impacting the efficiency and economic benefits of the entire mine production.

[0004] On the other hand, in large-scale mining production, the demand for long-distance, steep-angle material conveying is becoming increasingly urgent, placing extremely stringent requirements on conveyor performance. However, some existing conveyors currently perform poorly in meeting these critical needs, failing to satisfy the efficient and stable production goals of large mines. Taking a conveyor system using multiple conveyor belts to achieve long-distance transport as an example, the inclination angles of the conveyor belts vary across different sections, ranging from 5° to 20°. When the conveyor belt inclination angle is too large, the weight of the material on the belt becomes excessive, potentially leading to insufficient friction between the driven rollers and the belt, resulting in slippage. This problem directly interferes with normal material transport, causing material accumulation and reduced conveying efficiency. Over time, these conditions severely hinder the further development of the sand and gravel mining industry. Therefore, developing a new type of conveyor that can adapt to the complex environment of mines and meet the demands of long-distance, steep-angle transport is urgent and of significant practical importance. Summary of the Invention

[0005] The purpose of this invention is to provide a long-distance dustproof conveyor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A long-distance dustproof conveyor includes several conveyor belts. Each conveyor belt has a side frame on both sides in its width direction. Each side frame has a first support leg and a second support leg rotatably mounted at both ends in its length direction. The rotation axes of the first support leg and the second support leg are parallel to the axis of the driven roller on the conveyor belt.

[0008] The conveyor belt is equipped with a dust removal device to remove dust generated during material conveying.

[0009] The long-distance dustproof conveyor also includes a first mounting frame and a second mounting frame, wherein the first mounting frame is used to support two first support legs;

[0010] The second mounting bracket includes two vertically arranged second vertical frames, which are used to support two second support legs respectively;

[0011] The side frame has a through hole at one end near the second support leg. Both ends of the driven roller are coaxially fixed with roller shafts. The roller shafts are rotatably connected to the side frame through bearing seats. The bearing seats are linearly slidably disposed inside the through hole, and the sliding direction of the bearing seats is the same as the conveying direction of the conveyor belt.

[0012] One end of the side frame is provided with a linear telescopic component and a spring. The spring is sleeved on the linear telescopic component, and the spring tensions the conveyor belt by the driven roller through the elastic force generated by the contraction. One end of the linear telescopic component is fixedly connected to the bearing seat, and the other end of the linear telescopic component abuts against the side frame.

[0013] After the second support leg is rotated to a vertical position and connected to the second vertical frame, the side wall of the second support leg presses against the other end of the linear telescopic component to cause the spring to contract.

[0014] Preferably, the linear telescopic component includes a guide sleeve and a guide rod, the guide sleeve being fixedly mounted on the side frame, and the guide rod slidingly penetrating through the guide sleeve;

[0015] One end of the guide rod is fixedly connected to the bearing seat, and a stop ring is sleeved and fixed on the guide rod. The two ends of the spring abut against the bearing seat and the stop ring, respectively.

[0016] The other end of the guide rod is fixed with a round rod perpendicular to it, and a pad is fixed on one side of the second support leg, with the pad abutting against the round rod.

[0017] Preferably, the dust removal device includes a dust cover and a dust collector. The dust cover is installed on top of the conveyor belt, forming a channel between the dust cover and the conveyor belt. The dust collector is installed on top of the dust cover, and the air inlet pipe of the dust collector is connected to the channel.

[0018] Both ends of the dust cover are fixed with connecting soft covers, and two adjacent dust covers are connected by connecting soft covers.

[0019] Preferably, the first mounting bracket includes two vertically arranged first vertical brackets;

[0020] Two connecting plates are symmetrically fixed to the bottom of the first support leg, and the connecting plates are fixedly connected to the first vertical frame by the first fastener.

[0021] Preferably, the first support leg is rotatably connected to the side frame via a second fixed shaft, and the second fixed shaft is slidably connected to the side frame via a second linear guide pair, wherein the sliding direction of the second fixed shaft is the same as the conveying direction of the conveyor belt;

[0022] The second support leg is rotatably connected to the side frame via the first fixed shaft;

[0023] The second vertical frame includes a connector and a vertical cylinder. The top end of the connector is fixedly connected to the second support leg, and the vertical cylinder is fixedly installed vertically.

[0024] The vertical cylinder is equipped with a threaded rod and a sliding block inside. The threaded rod can rotate around its own axis, and the top of the threaded rod protrudes from the top surface of the vertical cylinder. The sliding block is slidably connected to the vertical cylinder, and the sliding block and the threaded rod are threadedly connected.

[0025] The vertical cylinder has symmetrical vertical slots on both sides. The connector is fixedly connected to the sliding block by a second fastener, and the second fastener passes through the vertical slot on one side of the vertical cylinder.

[0026] Preferably, the connector includes a first vertical plate and a second vertical plate that are fixedly connected, and the first vertical plate and the second vertical plate are arranged perpendicular to each other;

[0027] The second fastener includes a second internal hexagon head, a second stud, and a connecting rod arranged coaxially, and the connecting rod is fixed between the second internal hexagon head and the second stud. The connecting rod passes through the first vertical plate and the vertical strip hole located on one side of the vertical cylinder.

[0028] Preferably, the connector further includes a third vertical plate fixedly connected to the second vertical plate. The third vertical plate is fixedly connected to the sliding block by a third fastener, and the third fastener passes through the vertical bar hole located on the other side of the vertical cylinder.

[0029] Preferably, the second mounting bracket further includes an intermediate rod, which includes two fixed cylinders, each of which is fixedly connected to one of the two connecting members.

[0030] Preferably, the intermediate rod further includes a handle, the two ends of which are respectively sleeved on two fixed cylinders. A limiting sleeve is sleeved on the fixed cylinder, and the limiting sleeve is fixedly connected to the corresponding fixed cylinder by a fourth fastener.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] This invention, through its dust cover and dust collector, filters and removes dust generated during material conveying, preventing excessive dust accumulation around the conveyor belt. This extends the conveyor belt's lifespan and reduces its failure rate and maintenance costs. The invention also incorporates a linear telescopic component and spring, along with a rotatable second support leg. The distance between the second support leg and the linear telescopic component is limited. The rotation of the second support leg compresses and causes the spring to contract, creating a direct correlation between the frictional force between the driven roller and the conveyor belt and the belt's inclination angle. In other words, the greater the belt's inclination angle, the greater the frictional force between the driven roller and the belt. This technology enables dynamic adaptive adjustment of the friction between the driven roller and the conveyor belt, effectively preventing slippage and excessive energy consumption caused by excessive friction. Furthermore, since the conveyor in this solution is formed by splicing several conveyor belts, achieving long-distance transport, and the aforementioned friction adjustment scheme eliminates the need for individual adjustments to the friction between the driven roller and the conveyor belt on each belt, simplifying installation, shortening the installation cycle, and allowing the conveyor to be put into use as quickly as possible. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the conveyor belt, the first mounting frame, and the second mounting frame of the present invention.

[0035] Figure 3 This is a schematic diagram of the structure of the second support leg, guide sleeve, guide rod, stop ring, and spring of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of the first support leg and the first vertical frame of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the second mounting bracket of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of the connector of the present invention;

[0039] Figure 7 This is a structural schematic diagram of the connector of the present invention from another perspective;

[0040] Figure 8 This is a schematic diagram of the vertical cylinder structure of the present invention;

[0041] Figure 9 This is a partial structural schematic diagram of the vertical cylinder of the present invention;

[0042] Figure 10 This is a cross-sectional three-dimensional structural diagram of the vertical cylinder of the present invention;

[0043] Figure 11 This is a top cross-sectional view of the second vertical frame of the present invention;

[0044] Figure 12 This is a cross-sectional three-dimensional structural diagram of the grip of the present invention.

[0045] In the diagram: 1. Conveyor belt; 11. First support leg; 12. Second support leg; 13. First fixed shaft; 14. Side frame; 141. Through hole; 15. Bearing seat; 16. Driven roller; 161. Roller shaft; 17. Guide sleeve; 18. Guide rod; 181. Stop ring; 19. Spring; 110. First linear guide pair; 111. Pad; 112. Round rod; 113. Second fixed shaft; 114. Connecting plate; 115. First fastener; 2. First mounting bracket; 21. First vertical frame; 3. Second mounting bracket; 31. Second vertical frame; 31 1. Connector; 3111. First vertical plate; 3112. Second vertical plate; 3113. Third vertical plate; 312. Vertical cylinder; 3121. Vertical strip hole; 313. Second fastener; 3131. Second internal hex head; 3132. Second stud; 3133. Connecting rod; 314. Third fastener; 315. Threaded rod; 3151. Hexagonal groove; 316. Sliding block; 32. Intermediate rod; 321. Fixed cylinder; 322. Handle; 323. Limiting sleeve; 324. Fourth fastener; 4. Dust cover; 5. Connecting soft cover; 6. Dust collector. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see Figures 1-12 The present invention provides a technical solution:

[0048] A long-distance dustproof conveyor, which includes several conveyor belts 1, that is, the conveyor is formed by splicing several conveyor belts 1 to form a device that can carry out long-distance transportation.

[0049] The conveyor belt 1 is provided with side frames 14 on both sides in the width direction, that is, there are two side frames 14. This is the prior art and will not be described in detail here.

[0050] The side frame 14 has a first support leg 11 and a second support leg 12 rotatably mounted at both ends along its length. Specifically, the first support leg 11 is rotatably connected to the side frame 14 via a second fixed shaft 113. One end of the second fixed shaft 113 is slidably connected to the side frame 14 via a second linear guide pair, and the sliding direction of the second fixed shaft 113 is the same as the conveying direction of the conveyor belt 1. The other end of the second fixed shaft 113 is rotatably connected to the first support leg 11 via a bearing; the specific bearing type is not limited here. The second support leg 12 is rotatably connected to the side frame 14 via the first fixed shaft 13. For example, one end of the first fixed shaft 13 is fixedly connected to the side frame 14, while the other end of the first fixed shaft 13 is rotatably connected to the second support leg 12 via a bearing; the specific bearing type is not limited here. The rotation axes of both the first support leg 11 and the second support leg 12 are parallel to the axis of the driven roller 16 on the conveyor belt 1.

[0051] A dust removal device is installed on the conveyor belt 1 to remove dust generated during material conveying. Specifically, the dust removal device includes a dust cover 4 and a dust collector 6. The dust cover 4 can be made of stainless steel and is inverted U-shaped. The dust cover 4 covers the top of the conveyor belt 1, forming a channel between the dust cover 4 and the top surface of the conveyor belt 1. The dust collector 6 is installed on top of the dust cover 4, and its inlet pipe is connected to the channel. The dust collector 6 can be a bag filter, and its specific model is not limited here. The dust removal function involves the dust collector 6 absorbing the dust-laden gas inside the channel into the dust collector 6. After filtration, the gas is discharged through the exhaust port of the dust collector 6. This effectively cleans the dust generated during material conveying, preventing excessive dust accumulation around the conveyor belt 1, thus extending the service life of the conveyor belt 1 and reducing its failure rate and maintenance costs. Both ends of the dust cover 4 are fixed with connecting soft covers 5. Two adjacent dust covers 4 are connected by connecting soft covers 5, which can prevent the leakage of dust-containing gas between two adjacent dust covers 4.

[0052] In this technical solution, the long-distance dustproof conveyor also includes a first mounting frame 2 and a second mounting frame 3. The first mounting frame 2 is used to support two first support legs 11. Specifically, the first mounting frame 2 includes two vertically arranged first vertical frames 21. The first vertical frame 21 is in the shape of a square tube, and its bottom end is anchored to the ground by expansion bolts, etc. After installation, the first vertical frame 21 needs to be kept vertical. Two connecting plates 114 are symmetrically fixed at the bottom of the first support leg 11. The two connecting plates 114 are sandwiched on both sides of the first vertical frame 21 and are fixedly connected to the first vertical frame 21 by first fasteners 115. The first fasteners 115 can be hexagonal socket head cap screws.

[0053] The second mounting bracket 3 includes two vertically arranged second vertical brackets 31, which are used to support two second support legs 12 respectively. The bottom end of the second vertical bracket 31 is anchored to the ground by expansion bolts, etc., and the second vertical bracket 31 needs to be kept vertical after installation.

[0054] A through hole 141 is provided at one end of the side frame 14 near the second support leg 12. Both ends of the driven roller 16 are coaxially fixed with roller shafts 161. The roller shafts 161 are rotatably connected to the side frame 14 through bearing seats 15. The bearing seats 15 are linearly slidably disposed inside the through hole 141. Specifically, in this embodiment, the bearing seats 15 are linearly slidably connected to the side frame 14 through the first linear guide pair 110, thereby realizing the slidable design of the bearing seats 15 inside the through hole 141, and the sliding direction of the bearing seats 15 is the same as the conveying direction of the conveyor belt 1.

[0055] One end of the side frame 14 is provided with a linear telescopic component and a spring 19. The spring 19 is sleeved on the linear telescopic component, and the spring 19 causes the driven roller 16 to tension the conveyor belt 1 through the elastic force generated by the contraction. One end of the linear telescopic component is fixedly connected to the bearing seat 15, and the other end of the linear telescopic component abuts against the side frame 14. After the second support leg 12 is rotated to a vertical position and connected to the second vertical frame 31, the side wall of the second support leg 12 presses against the other end of the linear telescopic component to cause the spring 19 to contract.

[0056] The working principle of the above technical solution is as follows.

[0057] First, the installation method of conveyor belt 1 is as follows: Determine the inclination angle of conveyor belt 1 at a given location based on the actual terrain conditions. Then, calculate the horizontal distance between the first mounting frame 2 and the second mounting frame 3 at that inclination angle, and calculate the required height of the first mounting frame 2 and the second mounting frame 3. After completion, anchor the first mounting frame 2 and the second mounting frame 3 to the ground using expansion bolts, etc. The horizontal distance between the first mounting frame 2 and the second mounting frame 3 after installation must be the same as the calculated value, and it is necessary to ensure that the first vertical frame 21 and the second vertical frame 31 are vertical, and the height of the first vertical frame 21 and the second vertical frame 31 must also be consistent with the calculated value. Then, raise the position of conveyor belt 1 and connect the first support leg 11 and the first vertical frame... Alignment 21 is achieved, with the two connecting plates 114 clamped on both sides of the first vertical frame 21. Then, the connecting plates 114 and the first vertical frame 21 are fixedly connected by the first fastener 115. After that, the second support leg 12 is adjusted to a vertical position and fixedly connected to the vertical second vertical frame 31. During this process, since the second support leg 12 rotates around the first fixed axis 13 by a certain angle, the second support leg 12 will squeeze the linear telescopic component and the spring 19, causing the spring 19 to further contract. The elastic force generated will directly act on the driven roller 16 through the bearing seat 15, thereby changing the squeezing force of the driven roller 16 on the conveyor belt 1, increasing the friction between the two, and having the technical effect of preventing slippage between the two.

[0058] The advantages of the above technical solution are as follows: The dust cover 4 and dust collector 6 can filter and remove dust generated during material conveying, preventing excessive dust accumulation around the conveyor belt 1. This extends the service life of the conveyor belt 1 and reduces its failure rate and maintenance costs. The linear telescopic component and spring 19, combined with the rotatable second support leg 12 and a defined distance between the second support leg 12 and the linear telescopic component, cause the second support leg 12 to rotate, compressing and causing the spring 19 to contract. This creates a direct positive correlation between the friction between the driven roller 16 and the conveyor belt 1 and the tilt angle of the conveyor belt 1. That is, the greater the tilt angle of the conveyor belt 1, the greater the friction between the driven roller 16 and the conveyor belt 1. This achieves dynamic adaptive adjustment of the friction between the driven roller 16 and the conveyor belt 1, effectively preventing slippage between the driven roller 16 and the conveyor belt 1, and also preventing slippage between the driven roller 16 and the conveyor belt 1. The problem of increased energy consumption caused by excessive friction between the driven roller 16 and the conveyor belt 1 (for example, when the friction between the driven roller 16 and the conveyor belt 1 is too large, in order to maintain the normal operation of the conveyor belt 1, a larger output power is required to match it; because power is a necessary condition for overcoming friction to realize the movement of an object, the increased friction means the increased resistance to be overcome, and thus a greater power is required to drive it; and providing a greater output power usually means consuming more electrical energy, which will undoubtedly waste electrical energy resources and reduce the energy utilization efficiency of the entire conveying system); In addition, since the conveyor in this technical solution is formed by splicing several conveyor belts 1, the above-mentioned friction adjustment scheme does not require specific adjustment of the friction between the driven roller 16 and the conveyor belt 1 on each conveyor belt 1, thereby simplifying the construction steps during the installation of the conveyor, shortening the construction and installation cycle of the conveyor, and enabling the conveyor to be put into use as soon as possible.

[0059] In this technical solution, the linear telescopic component includes a guide sleeve 17 and a guide rod 18. The length direction of the guide rod 18 is the same as the conveying direction of the conveyor belt 1. The guide sleeve 17 is fixedly installed on the side frame 14, and the guide rod 18 slides through the guide sleeve 17. Furthermore, one end of the guide rod 18 is fixedly connected to the bearing seat 15, and a stop ring 181 is sleeved and fixed on the guide rod 18. In this embodiment, the guide rod 18 and the stop ring 181 are welded together. The two ends of the spring 19 abut against the bearing seat 15 and the stop ring 181, respectively. The other end of the guide rod 18 is welded and fixedly fixed with a round rod 112 perpendicular to it. A pad 111 is fixedly provided on one side of the second support leg 12, and the pad 111 abuts against the round rod 112. The thickness of the pad 111 can be selected according to the actual situation.

[0060] The second vertical frame 31 includes a connector 311 and a vertical cylinder 312. The top end of the connector 311 is fixedly connected to the second support leg 12, the vertical cylinder 312 is fixedly installed vertically, and the bottom end of the vertical cylinder 312 is anchored to the ground.

[0061] The vertical cylinder 312 is equipped with a threaded rod 315 and a sliding block 316. The threaded rod 315 can rotate around its own axis. Specifically, both the upper and lower ends of the threaded rod 315 are rotatably connected to the vertical cylinder 312 through bearings. The top end of the threaded rod 315 protrudes from the top surface of the vertical cylinder 312, and a hexagonal groove 3151 is provided on the top of the threaded rod 315 to facilitate the rotation of the threaded rod 315. The sliding block 316 is slidably connected to the vertical cylinder 312, and the sliding block 316 is threadedly connected to the threaded rod 315. Tightening the threaded rod 315 can drive the sliding block 316 to rise or fall.

[0062] The vertical cylinder 312 has symmetrical vertical slots 3121 on both sides. The connector 311 is fixedly connected to the sliding block 316 by the second fastener 313, and the second fastener 313 passes through the vertical slot 3121 on one side of the vertical cylinder 312. In this way, the fixed connection between the second support leg 12 and the sliding block 316 is realized. At this time, the height of the second support leg 12 can be finely adjusted by turning the threaded rod 315, that is, the tilt angle of the conveyor belt 1 can be finely adjusted.

[0063] The first and second linear guide pairs in the above scheme are both existing technologies, so their specific structures will not be described in detail.

[0064] In this embodiment, the connector 311 includes a first vertical plate 3111, a second vertical plate 3112, and a third vertical plate 3113 that are fixedly connected, and the first vertical plate 3111 and the second vertical plate 3112 are arranged perpendicularly to each other, and the second vertical plate 3112 and the third vertical plate 3113 are arranged perpendicularly to each other.

[0065] The second fastener 313 includes a second hexagonal socket head 3131, a second stud 3132, and a connecting rod 3133, which are coaxially arranged. The connecting rod 3133 is fixed between the second hexagonal socket head 3131 and the second stud 3132. The connecting rod 3133 passes through the first vertical plate 3111 and the vertical bar hole 3121 located on one side of the vertical cylinder 312. The function of the connecting rod 3133 is to prevent excessive friction between the second hexagonal socket head 3131 and the first vertical plate 3111, while also ensuring a stable and firm fixed connection between the sliding block 316 and the first vertical plate 3111, thus ensuring relative sliding between the first vertical plate 3111 and the vertical cylinder 312. The third vertical plate 3113 is fixedly connected to the sliding block 316 via a third fastener 314, and the third fastener 314 passes through the vertical bar hole 3121 located on the other side of the vertical cylinder 312. The third fastener 314 is used to tighten after the angle adjustment is completed, so that the third vertical plate 3113 is pressed and fixed on the vertical cylinder 312, thereby improving the overall stability. The third fastener 314 can be an internal hex bolt.

[0066] In this embodiment, the second mounting bracket 3 further includes a central rod 32, which comprises two fixed cylinders 321, each welded and fixedly connected to two connecting pieces 311. Further, the central rod 32 also includes a handle 322, which is a hollow cylindrical shape. Both ends of the handle 322 are respectively fitted onto the two fixed cylinders 321. A limiting sleeve 323 is fitted onto each fixed cylinder 321, and the limiting sleeve 323 is fixedly connected to its corresponding fixed cylinder 321 via a fourth fastener 324. The limiting sleeve 323 is used to limit the position of the handle 322, ensuring that both ends of the handle 322 can always be fitted onto the two fixed cylinders 321. The fourth fastener 324 in the above solution can be a bolt.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A long distance dustproof conveyor comprising a plurality of conveyor belts, each of which is provided with a side frame on both sides in the width direction thereof, characterized in that, Two ends of the side frame in the length direction are respectively rotationally provided with a first supporting leg and a second supporting leg, wherein the rotation axes of the first supporting leg and the second supporting leg are parallel to the axes of the driven rollers on the conveying belt; The conveying belt is provided with a dust removal device for removing dust generated in the material conveying process; The long-distance dustproof conveyor further comprises a first mounting frame and a second mounting frame, the first mounting frame is used for supporting the two first supporting legs; The second mounting frame comprises two vertically arranged second vertical frames, and the two second vertical frames are used for supporting the two second supporting legs, respectively; The side frame is provided with a through hole at one end close to the second supporting leg, both ends of the driven roller are coaxially fixed with roller shafts, the roller shafts are rotationally connected with the side frame through bearing seats, the bearing seats are linearly slidably arranged in the through hole, and the sliding direction of the bearing seats is the same as the conveying direction of the conveying belt; One end of the side frame is provided with a linear extension component and a spring, the spring is sleeved on the linear extension component, the spring makes the driven roller tension the belt body of the conveying belt through the elastic force generated by contraction, one end of the linear extension component is fixedly connected with the bearing seat, and the other end of the linear extension component abuts against the side frame; After the second supporting leg is rotated to the vertical state and connected with the second vertical frame, the side wall of the second supporting leg extrudes the other end of the linear extension component to make the spring contract.

2. The long-distance dust-tight conveyor as claimed in claim 1, characterized in that The linear extension component comprises a guide sleeve and a guide rod, the guide sleeve is fixedly installed on the side frame, and the guide rod is slidably penetrated through the guide sleeve; One end of the guide rod is fixedly connected with the bearing seat, a stop ring is sleeved and fixed on the guide rod, and both ends of the spring abut against the bearing seat and the stop ring, respectively; The other end of the guide rod is fixedly provided with a vertical circular rod, one side of the second supporting leg is fixedly provided with a pad, and the pad abuts against the circular rod.

3. The long distance dust-tight conveyor as claimed in claim 1, characterized in that, The dust removal device comprises a dust cover and a dust remover, the dust cover is arranged on the top of the conveying belt to form a channel between the dust cover and the conveying belt, the dust remover is installed on the top of the dust cover, and an air inlet pipe of the dust remover is in communication with the channel; Both ends of the dust cover are fixedly provided with connecting soft covers, and two adjacent dust covers are connected through the connecting soft covers.

4. The long distance dust-tight conveyor as claimed in claim 1, characterized in that, The first mounting frame comprises two first vertical frames arranged vertically; The bottom of the first supporting leg is symmetrically fixed with two connecting plates, and the connecting plates are fixedly connected with the first vertical frames through first fasteners.

5. The long distance dust-tight conveyor as claimed in claim 1, characterized in that, The first supporting leg is rotationally connected with the side frame through a second fixing shaft, and the second fixing shaft is slidably connected with the side frame through a second linear guide rail pair, and the sliding direction of the second fixing shaft is the same as the conveying direction of the conveying belt; The second supporting leg is rotationally connected with the side frame through a first fixing shaft; The second vertical frame comprises a connecting piece and a vertical cylinder, the top end of the connecting piece is fixedly connected with the second supporting leg, and the vertical cylinder is vertically fixedly arranged; The inside of the vertical cylinder is provided with a threaded rod and a sliding block, the threaded rod can rotate around its axis, the top end of the threaded rod protrudes from the top surface of the vertical cylinder, the sliding block is slidably connected with the vertical cylinder, and the sliding block and the threaded rod are threadedly connected; The inside of the vertical cylinder is provided with a threaded rod and a sliding block, the threaded rod can rotate around its axis, the top end of the threaded rod protrudes from the top surface of the vertical cylinder, the sliding block is slidably connected with the vertical cylinder, and the sliding block and the threaded rod are threadedly connected; The vertical cylinder is symmetrically provided with vertical slot holes on two sides, the connecting piece is fixedly connected with the sliding block through a second fastener, and the second fastener penetrates the vertical slot hole on one side of the vertical cylinder.

6. The long-distance dust-tight conveyor as claimed in claim 5, characterized in that The connecting piece comprises a first vertical plate and a second vertical plate which are fixedly connected, and the first vertical plate and the second vertical plate are arranged perpendicularly. The second fastener comprises a second inner hexagonal head, a second stud and a connecting rod which are coaxially arranged, and the connecting rod is fixed between the second inner hexagonal head and the second stud, and the connecting rod penetrates the first vertical plate and the vertical slot hole on one side of the vertical cylinder.

7. The long-distance dust-tight conveyor as claimed in claim 6, characterized in that The connecting piece further comprises a third vertical plate which is fixedly connected with the second vertical plate, and the third vertical plate is fixedly connected with the sliding block through a third fastener, and the third fastener penetrates the vertical slot hole on the other side of the vertical cylinder.

8. The long distance dust-tight conveyor as claimed in claim 5, characterized in that, The second mounting frame further comprises an intermediate rod, and the intermediate rod comprises two fixed cylinders which are fixedly connected with the two connecting pieces respectively.

9. The long-distance dust-tight conveyor as claimed in claim 8, characterized in that The intermediate rod further comprises a handle, two ends of the handle are sleeved on the two fixed cylinders respectively, the fixed cylinder is sleeved with a limiting sleeve, and the limiting sleeve is fixedly connected with the corresponding fixed cylinder through a fourth fastener.

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