Conveyor belt folding structure and crushing and screening plant

Abstract

The utility model relates to the technical field of engineering machinery provides a conveying belt folding structure and broken screening equipment, this conveying belt folding structure includes: support, conveying belt device includes opposite first conveying section and second conveying section of slidability, first conveying section is connected with support rotation, support rod, both ends are connected with first conveying section and support rotation respectively, telescopic link, both ends are connected with second conveying section and support rotation respectively, drive arrangement, set up in telescopic link, is used for driving telescopic link retraction. This conveying belt folding structure only drives telescopic link through drive arrangement, realizes folding using the relative sliding and the deflection of first conveying section and second conveying section, need not the additional joint or the connecting component of traditional multi -segment folding. The cooperation of support rod and telescopic link reduces the component quantity, makes the whole structure more compact and simple. Since folding mechanism is simplified into single action, the number of moving parts is greatly reduced, thereby reducing the risk of wear, jam or failure.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a conveyor belt folding structure and a crushing and screening device. Background Technology

[0002] In recent years, with the increasing demand in markets such as sand and gravel aggregate crushing and construction waste processing, the application scenarios of mobile crushing and screening equipment have gradually become more widespread. These mobile crushing and screening equipment is typically used in construction sites with short lifecycles, usually requiring relocation every 3 to 6 months or about a year. Therefore, mobile crushing and screening equipment generally needs to be designed to be transportable on roads. Furthermore, the conveyor belt folding structure of the crushing and screening equipment needs to reach a certain length to transport the crushed material a certain distance from the equipment to meet continuous operation requirements. Therefore, when relocating the equipment, the conveyor belt folding structure needs to be folded to a size that meets transportation requirements.

[0003] Existing conveyor belt folding structures come in various folding methods, but they usually require multiple folds to meet transportation size requirements. Multiple folds lead to complex conveyor belt structures, high costs, and frequent malfunctions, affecting the overall lifespan of the equipment and even posing safety risks. Utility Model Content

[0004] This utility model provides a conveyor belt folding structure to solve the problems of existing conveyor belt folding structures requiring multiple folds, which leads to complex folding structures, high costs, and frequent malfunctions.

[0005] This utility model provides a conveyor belt folding structure, including: support; A conveyor belt device includes a first conveying section and a second conveying section that are relatively slidably connected to each other, the first conveying section being rotatably connected to the support frame; The support rod is rotatably connected at both ends to the first conveying section and the bracket, respectively. The telescopic rod is rotatably connected at both ends to the second conveying section and the bracket, respectively. A drive device, disposed on the telescopic rod, is used to drive the telescopic rod to extend or retract; In the working state, the telescopic rod extends, and with the support of the support rod, it drives the second conveying section to extend outward relative to the first conveying section towards the support; in the transport state, the telescopic rod retracts to cooperate with the support rod, pulling the second conveying section to sway towards the support.

[0006] According to the present invention, a conveyor belt folding structure is provided, wherein the telescopic rod includes: an outer tube and an inner liner tube; The outer tube is rotatably connected to the support, one end of the inner liner is inserted into the outer tube, and the other end of the inner liner is rotatably connected to the second conveying section. The driving device is used to drive the inner liner to slide along the inner wall of the outer tube.

[0007] According to the present invention, a conveyor belt folding structure is provided, wherein the driving device is a hydraulic cylinder; The driving device is a hydraulic cylinder, which includes a cylinder body and a piston rod. The cylinder body is fixedly installed on the outer sleeve, and the end of the piston rod is connected to the inner liner. The cylinder body drives the inner liner to slide along the inner wall of the outer sleeve by pushing the piston rod.

[0008] According to the present invention, a conveyor belt folding structure further includes: three universal joints, one end of the first conveying section being movably connected to the bracket through one of the universal joints; one end of the support rod being movably connected to the bracket through another universal joint; and one end of the telescopic rod being movably connected to the bracket through the remaining universal joint.

[0009] According to the present invention, a conveyor belt folding structure further includes: two rotating shafts; The other end of the support rod is rotatably connected to the first conveying section via one of the rotating shafts; the other end of the telescopic rod is rotatably connected to the first conveying section via the remaining rotating shaft.

[0010] According to the present invention, a conveyor belt folding structure is provided, wherein the first conveyor section and the second conveyor section are provided with conveyor belts; The first conveyor section has a first pulley fixed at its tail end and the second conveyor section has a second pulley fixed at its head end. The conveyor belt continuously passes around the first pulley and the second pulley to form a closed loop.

[0011] According to the folding structure of the conveyor belt provided by this utility model, the driving device is a cylinder or an electric cylinder.

[0012] This utility model also provides a crushing and screening device, including: Vehicle body; A crusher is mounted on the vehicle body, and the crusher is provided with a feed inlet and a discharge outlet; The conveyor belt has a folding structure, and the bracket of the folding structure is connected to the vehicle body; in the working state, the first conveying section is located below the discharge port.

[0013] According to the present invention, a crushing and screening device is provided, wherein the crusher is provided with multiple discharge ports; the conveyor belt folding structure is provided with multiple structures, each of which is connected to the vehicle body through a corresponding bracket; in the working state, the first conveying section on each of the conveyor belt folding structures is located below the corresponding discharge port.

[0014] According to the present invention, a crushing and screening device is provided, wherein the crusher is provided with a coarse material discharge port, a medium material discharge port and a fine material discharge port; The conveyor belt folding structure has three parts: a coarse material belt folding structure, a medium material belt folding structure, and a fine material belt folding structure. In the working state, the first conveying section on the coarse material belt folding structure is located below the coarse material outlet, the first conveying section on the medium material belt folding structure is located below the medium material outlet, and the first conveying section on the fine material belt folding structure is located below the fine material outlet.

[0015] The conveyor belt folding structure and crushing and screening equipment provided by this utility model achieve folding by driving the telescopic rod with a drive device and utilizing the relative sliding and swaying of the first and second conveyor sections, eliminating the need for additional joints or connecting parts required by traditional multi-segment folding. The cooperation between the support rod and the telescopic rod reduces the number of components, making the overall structure more compact and simple. Since the folding mechanism is simplified to a single action, the number of moving parts is greatly reduced, thereby reducing the risk of wear, jamming, or failure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of existing crushing and screening equipment; Figure 2 This is a schematic diagram of the conveyor belt folding structure provided by this utility model in the working state.

[0018] Figure 3 This is a schematic diagram of the conveyor belt folding structure provided by this utility model in the transportation state.

[0019] Figure 4 This is a schematic diagram of the crushing and screening equipment provided by this utility model in working condition.

[0020] Figure 5 This is a schematic diagram of the crushing and screening equipment provided by this utility model in the transportation state.

[0021] Figure label: 1. Conveyor belt folding structure; 11. Support frame; 12. Conveyor belt device; 121. First conveyor section; 122. Second conveyor section; 13. Support rod; 14. Telescopic rod; 141. Outer tube; 142. Inner liner tube; 15. Drive device; 16. Universal joint; 17. Lifting cylinder; 18. Swing cylinder; 2. Car body; 3. Crusher; 4. Coarse material conveyor belt folding structure; 5. Medium material conveyor belt folding structure; 6. Fine material conveyor belt folding structure. Detailed Implementation

[0022] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0024] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0026] Existing conveyor belt folding structure 1, such as Figure 1 As shown, to switch from working state to transportation state, the vertical folding is achieved by extending and retracting the lifting cylinder 17, and the horizontal folding is achieved by extending and retracting the swing cylinder 18. This method requires multiple foldings to meet the transportation size requirements of the whole machine, which directly causes the entire conveyor belt folding structure 1 to have a complex structure, high cost, and many failures, affecting the overall life of the equipment and even causing safety problems.

[0027] To address the aforementioned problems, this application proposes a conveyor belt folding structure 1, such as... Figure 2 and Figure 3 As shown, the conveyor belt folding structure 1 also has a working state and a transportation state, including: a support frame 11, a conveyor belt device 12, a support rod 13, a telescopic rod 14, and a drive device 15. The conveyor belt device 12 includes a first conveying section 121 and a second conveying section 122 that are slidably connected to each other. The first conveying section 121 is rotatably connected to the support frame 11. The two ends of the support rod 13 are rotatably connected to the first conveying section 121 and the support frame 11, respectively. The two ends of the telescopic rod 14 are rotatably connected to the second conveying section 122 and the support frame 11, respectively. The drive device 15 is disposed on the telescopic rod 14 and is used to drive the telescopic rod 14 to extend and retract. In the working state, the telescopic rod 14 extends, and under the support of the support rod 13, it drives the second conveying section 122 to extend outward relative to the first conveying section 121 towards the support frame 11. In the transportation state, the telescopic rod 14 retracts to cooperate with the support rod 13, pulling the second conveying section 122 to sway towards the support frame 11.

[0028] In this embodiment, the support 11 is generally a vehicle frame, connected to the vehicle body 2. The entire conveyor belt folding structure 1 is connected to the vehicle body 2. The conveyor belt device 12 is used to transport materials on the vehicle body 2, and is provided with a first conveying section 121 and a second conveying section 122.

[0029] In operation, the drive device 15 causes the telescopic rod 14 to extend at a constant speed. The end of the telescopic rod 14 pushes the second conveying section 122 to move smoothly outward along the built-in slide rail of the first conveying section 121. At the same time, the support rod 13 rotates around its two hinge points and lifts the first conveying section 121 to a preset angle. The first conveying section 121 and the second conveying section 122 form a continuous flat bearing surface in sliding cooperation. The entire conveyor belt device 12 unfolds outside the support 11, and the material can be smoothly conveyed from the tail to the front. When relocation is required, the drive unit 15 reverses its action, and the telescopic rod 14 gradually retracts. Its tension acts on the second conveying section 122 through the hinge point. Guided by the slide rail, the second conveying section 122 slides into the first conveying section 121 and swings downwards. The support rod 13 swings back synchronously, causing the first conveying section 121 to retract towards the side of the support 11. Finally, the first conveying section 121 and the second conveying section 122 overlap and abut against the side of the support 11, greatly reducing the overall space occupied. It can be transported directly with the vehicle without disassembly. The entire folding and unfolding process is completed by a single telescopic drive, without the need for additional locking pins, connecting rods, or tilting cylinders. This reduces manufacturing and maintenance costs, reduces the difficulty of hydraulic pipeline layout, and significantly improves the relocation efficiency of mobile crushing and screening equipment under complex working conditions.

[0030] The conveyor belt folding structure 1 provided by this utility model achieves folding by driving the telescopic rod 14 with only the drive device 15, utilizing the relative sliding and swaying of the first conveyor section 121 and the second conveyor section 122, without the need for the additional joints or connecting parts required by traditional multi-segment folding. The cooperation between the support rod 13 and the telescopic rod 14 reduces the number of components, making the overall structure more compact and simple. Since the folding mechanism is simplified to a single action, the number of moving parts is greatly reduced, thereby reducing the risk of wear, jamming, or failure.

[0031] In some embodiments, such as Figure 2 and Figure 3 As shown, the telescopic rod 14 includes an outer tube 141 and an inner liner tube 142; the outer tube 141 is rotatably connected to the bracket 11, one end of the inner liner tube 142 is inserted into the outer tube 141, and the other end of the inner liner tube 142 is rotatably connected to the second conveying section 122. The driving device 15 is used to drive the inner liner tube 142 to slide along the inner wall of the outer tube 141.

[0032] Specifically, the outer diameter of the inner liner tube 142 is slightly smaller than the inner diameter of the outer sleeve tube 141, with a clearance of 0.3~0.5 mm between them. This ensures smooth sliding while providing sufficient anti-sway stiffness when subjected to lateral bending moments. The drive device 15 can drive the inner liner tube 142 and the outer sleeve tube 141 to move closer or further apart, thereby enabling the telescopic rod 14 to drive the second conveyor section 122 connected to it, so that the first conveyor section 121 and the second conveyor section 122 in the conveyor belt device 12 move closer or further apart.

[0033] In some embodiments, such as Figure 2 and Figure 3 As shown, the drive device 15 is a hydraulic cylinder. The hydraulic cylinder includes a cylinder body and a piston rod. The cylinder body is fixedly installed on the outer sleeve 141, and the end of the piston rod is connected to the inner liner 142. The cylinder body drives the inner liner 142 to slide along the inner wall of the outer sleeve 141 by pushing the piston rod.

[0034] When the cylinder body of the hydraulic cylinder pushes the piston rod towards the inner liner tube 142, the inner liner tube 142 extends outward along the inner wall of the outer sleeve tube 141, thereby pushing the second conveying section 122 to unfold outward along the slide rail of the first conveying section 121; conversely, when the cylinder body of the hydraulic cylinder pulls the piston rod, the inner liner tube 142 retracts inward along the inner wall of the outer sleeve tube 141, causing the second conveying section 122 to slide and fold inward toward the inner side of the first conveying section 121.

[0035] During transportation, the conveyor belt folding structure 1 is in a folded transportation state, and the first conveying section 121 and the second conveying section 122 overlap and abut against the side of the support 11. The overall space occupied is small, which facilitates transportation.

[0036] When the equipment arrives at the work site and the conveyor belt needs to be unfolded, the drive unit 15 (hydraulic cylinder) starts working. The cylinder body of the hydraulic cylinder is fixed to the outer sleeve 141, and the end of the piston rod is connected to the inner liner 142. The hydraulic cylinder is powered by the hydraulic system, pushing the piston rod outward.

[0037] The extension of the piston rod causes the inner liner tube 142 to slide outward along the inner wall of the outer sleeve tube 141. Since the inner liner tube 142 is rotatably connected to the second conveying section 122, the sliding of the inner liner tube 142 pushes the second conveying section 122 to move smoothly outward along the built-in slide rail of the first conveying section 121. Simultaneously, the two ends of the support rod 13 are rotatably connected to the first conveying section 121 and the bracket 11, respectively. As the second conveying section 122 moves outward, the support rod 13 rotates around its hinge points at both ends, lifting the first conveying section 121 to a preset tilt angle. The first conveying section 121 and the second conveying section 122 gradually form a continuous, flat bearing surface through sliding contact.

[0038] When the telescopic rod 14 is fully extended, the second conveying section 122 reaches the predetermined position, and the first conveying section 121 and the second conveying section 122 form a complete, continuous, and straight conveying surface. The entire conveyor belt device 12 is fully extended outside the support 11, and the material can be smoothly conveyed from the tail to the front, and the conveyor belt enters the working state.

[0039] In some embodiments, such as Figure 2 and Figure 3As shown, the conveyor belt folding structure 1 also includes: three universal joints 16, one end of the first conveying section 121 is movably connected to the bracket 11 through one of the universal joints 16; one end of the support rod 13 is movably connected to the bracket 11 through another universal joint 16; and one end of the telescopic rod 14 is movably connected to the bracket 11 through the remaining universal joint 16.

[0040] In this embodiment, the universal joint 16 is a connecting component capable of free rotation in multiple directions, which can effectively solve the motion interference problem caused by changes in angle between different components. Through the connection of the universal joint 16, the angles of each component can be adjusted more flexibly during folding and unfolding.

[0041] One end of the first conveying section 121 is movably connected to the bracket 11 via one of the universal joints 16. This connection method allows the first conveying section 121 to rotate freely in multiple directions, thereby enabling flexible adjustment of the angle during folding and unfolding, and avoiding stress concentration caused by rigid connection.

[0042] One end of the support rod 13 is movably connected to the bracket 11 via another universal joint 16. The support rod 13 needs to rotate around the hinge points at both ends during folding and unfolding. The addition of the universal joint 16 gives the support rod 13 greater freedom of movement in multiple directions, which can better adapt to the relative movement between the first conveying section 121 and the second conveying section 122.

[0043] One end of the telescopic rod 14 is movably connected to the bracket 11 via the remaining universal joint 16. The telescopic rod 14 extends and retracts under the drive of the drive device 15. The universal joint 16 allows the telescopic rod 14 to flexibly adjust its angle during movement, ensuring a more stable connection between it and the second conveying section 122, while also reducing motion interference caused by angle changes.

[0044] By adding three universal joints 16 to the conveyor belt folding structure 1, not only is the flexibility and adaptability of each component improved during the folding and unfolding process, but stress concentration is also effectively reduced, enhancing the stability and reliability of the entire structure.

[0045] In some embodiments, such as Figure 2 and Figure 3 As shown, the conveyor belt folding structure 1 also includes two rotating shafts. The other end of the support rod 13 is rotatably connected to the first conveying section 121 via one of the rotating shafts. This connection method allows the support rod 13 to rotate freely around the rotating shaft on the first conveying section 121, thereby flexibly adjusting the angle during folding and unfolding to ensure that the support rod 13 can stably support the first conveying section 121.

[0046] The other end of the telescopic rod 14 is rotatably connected to the first conveying section 121 via the remaining rotating shaft. This connection method allows the telescopic rod 14 to rotate freely around the rotating shaft on the first conveying section 121, thereby flexibly adjusting the angle during the extension and retraction process, ensuring that the telescopic rod 14 can smoothly push or pull the second conveying section 122.

[0047] In some embodiments, such as Figure 2 and Figure 3 As shown, conveyor belts are provided on the first conveying section 121 and the second conveying section 122; a first pulley is fixed at the tail of the first conveying section 121 and a second pulley is fixed at the head of the second conveying section 122, and the conveyor belts continuously pass around the first pulley and the second pulley to form a closed loop.

[0048] In this embodiment, the conveyor belt tightly covers and wraps around the upper (or bearing surface) and lower surface of the first conveyor section 121 and the second conveyor section 122, forming a complete material conveying path. Regardless of how the first conveyor section 121 and the second conveyor section 122 slide relative to each other or rotate / sway as a whole relative to the support 11, that is, regardless of whether the conveyor belt folding structure 1 is in an extended working state or a retracted transport state, since the first pulley and the second pulley are respectively firmly installed on the first and second conveyor sections 122, and the conveyor belt continuously and uninterruptedly wraps around them, it can be ensured that the conveyor belt will not easily fall off.

[0049] It should be noted that the drive unit 15 can be not only a hydraulic cylinder, but also a pneumatic cylinder or an electric cylinder. Pneumatic cylinders use compressed air as a power source to achieve the telescopic movement. Electric cylinders are driven by a motor to achieve the telescopic movement. Hydraulic cylinders are suitable for high-load and high-precision applications, pneumatic cylinders are suitable for light-load and fast-response applications, while electric cylinders are suitable for high-precision control and automated operation. This versatility provides great convenience for equipment customization and optimization, better meeting the needs of different users.

[0050] This application also provides a crushing and screening device, such as... Figures 2 to 5 As shown, the crushing and screening equipment includes: a vehicle body 2, a crusher 3, and a conveyor belt folding structure 1. The crusher 3 is installed on the vehicle body 2 and has a feed inlet and a discharge outlet; the support 11 of the conveyor belt folding structure 1 is connected to the vehicle body 2; in the working state, the first conveying section 121 is located below the discharge outlet.

[0051] In this embodiment, the vehicle body 2 serves as the supporting foundation for the entire equipment. The vehicle body 2 is equipped with a walking device (such as tracks or a wheeled drive system), enabling the equipment to move freely on the construction site, facilitating relocation and positioning. The crusher 3 is used to crush large pieces of material into smaller particles for subsequent screening and conveying. The crusher 3 is mounted on the vehicle body 2, typically located at the front or middle of the equipment, facilitating material feeding and discharging. The crusher 3 has a feed inlet and a discharge outlet; the feed inlet receives the material to be crushed, and the discharge outlet discharges the crushed material. The conveyor belt folding structure 1 is used to transport the crushed material from the discharge outlet of the crusher 3 to a designated location. The support 11 of the conveyor belt folding structure 1 is connected to the vehicle body 2, ensuring its stability during operation and transportation. In operation, the first conveying section 121 of the conveyor belt folding structure 1 is located directly below the discharge outlet of the crusher 3, ensuring that the crushed material falls smoothly onto the conveyor belt and is transported to subsequent processing equipment or a designated location.

[0052] In operation, the telescopic rod 14 of the conveyor belt folding structure 1 extends and the support rod 13 rises, so that the first conveying section 121 and the second conveying section 122 form a continuous and straight conveying surface. The first conveying section 121 is located directly below the discharge port of the crusher 3, ensuring that the crushed material can fall directly onto the conveyor belt and then be conveyed to the designated location.

[0053] When the equipment needs to be moved, the telescopic rod 14 of the conveyor belt folding structure 1 retracts, and the support rod 13 swings back, causing the first conveyor section 121 and the second conveyor section 122 to fold and rest against the side of the support 11. The space occupied by the entire conveyor belt folding structure 1 is significantly reduced, facilitating the transportation of the equipment. In the transportation state, the compact design of the conveyor belt folding structure 1 reduces the equipment's footprint and improves the equipment's transportation efficiency.

[0054] like Figures 2 to 5 As shown, the crusher 3 has multiple discharge ports; the conveyor belt folding structure 1 has multiple folding structures, each of which is connected to the vehicle body 2 through a corresponding bracket 11; in the working state, the first conveying section 121 on each conveyor belt folding structure 1 is located below the corresponding discharge port.

[0055] Specifically, the crusher 3 is equipped with a coarse material discharge port, a medium material discharge port, and a fine material discharge port; the coarse material discharge port is used to discharge materials with larger particle sizes. The medium material discharge port is used to discharge materials with medium particle sizes. The fine material discharge port is used to discharge materials with smaller particle sizes. The conveyor belt folding structure 1 has three parts, namely a coarse material folding structure 4, a medium material folding structure 5, and a fine material folding structure 6; the coarse material folding structure 4 is used to convey coarse materials. The medium material folding structure 5 is used to convey medium materials. The fine material folding structure 6 is used to convey fine materials.

[0056] In operation, the first conveying section 121 of each conveyor belt folding structure 1 is located below its corresponding discharge port: the first conveying section 121 of the coarse material conveyor belt folding structure 4 is located directly below the coarse material discharge port, used to receive and convey coarse material. The first conveying section 121 of the medium material conveyor belt folding structure 5 is located directly below the medium material discharge port, used to receive and convey medium material. The first conveying section 121 of the fine material conveyor belt folding structure 6 is located directly below the fine material discharge port, used to receive and convey fine material. After conveying is completed, the equipment can be folded for transport. The first conveying sections 121 and second conveying sections 122 of all conveyor belt folding structures 1 are overlapped and attached to the side of the support 11, occupying less space overall and facilitating transportation.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A conveyor belt folding structure (1), characterized in that, It has working status and transportation status, including: Support (11); The conveyor belt device (12) includes a first conveying section (121) and a second conveying section (122) that are relatively slidably connected, wherein the first conveying section (121) is rotatably connected to the support (11); The support rod (13) is rotatably connected at both ends to the first conveying section (121) and the bracket (11), respectively; The telescopic rod (14) is rotatably connected at both ends to the second conveying section (122) and the bracket (11), respectively; A drive device (15) is disposed on the telescopic rod (14) for driving the telescopic rod (14) to extend or retract; In the working state, the telescopic rod (14) extends and, supported by the support rod (13), drives the second conveying section (122) to extend outward relative to the first conveying section (121) toward the outside of the bracket (11); in the transport state, the telescopic rod (14) retracts to cooperate with the support rod (13) and pulls the second conveying section (122) to swing toward the bracket (11).

2. The conveyor belt folding structure (1) according to claim 1, characterized in that, The telescopic rod (14) includes: an outer tube (141) and an inner liner tube (142). The outer tube (141) is rotatably connected to the bracket (11), one end of the inner liner (142) is inserted into the outer tube (141), and the other end of the inner liner (142) is rotatably connected to the second conveying section (122). The driving device (15) is used to drive the inner liner (142) to slide along the inner wall of the outer tube (141).

3. The conveyor belt folding structure (1) according to claim 2, characterized in that, The driving device (15) is a hydraulic cylinder; The driving device (15) is a hydraulic cylinder, which includes a cylinder body and a piston rod. The cylinder body is fixedly installed on the outer sleeve (141), and the end of the piston rod is connected to the inner liner (142). The cylinder body drives the inner liner (142) to slide along the inner wall of the outer sleeve (141) by pushing the piston rod.

4. The conveyor belt folding structure (1) according to claim 1, characterized in that, The conveyor belt folding structure (1) further includes: three universal joints (16), one end of the first conveying section (121) is movably connected to the bracket (11) through one of the universal joints (16); one end of the support rod (13) is movably connected to the bracket (11) through another universal joint (16); and one end of the telescopic rod (14) is movably connected to the bracket (11) through the remaining universal joint (16).

5. The conveyor belt folding structure (1) according to claim 4, characterized in that, The conveyor belt folding structure (1) also includes: two rotating shafts; The other end of the support rod (13) is rotatably connected to the first conveying section (121) via one of the shafts; the other end of the telescopic rod (14) is rotatably connected to the first conveying section (121) via the remaining shaft.

6. The conveyor belt folding structure (1) according to claim 1, characterized in that, The first conveyor section (121) and the second conveyor section (122) are equipped with conveyor belts; The first conveyor section (121) has a first pulley fixed at its tail end, and the second conveyor section (122) has a second pulley fixed at its head end. The conveyor belt continuously passes around the first pulley and the second pulley to form a closed loop.

7. The conveyor belt folding structure (1) according to claim 1, characterized in that, The drive device (15) is a cylinder or an electric cylinder.

8. A crushing and screening device, characterized in that, include: Vehicle body (2); A crusher (3) is installed on the vehicle body (2), and the crusher (3) is provided with a feed inlet and a discharge outlet; In any one of claims 1-7, the support (11) of the conveyor belt folding structure (1) is connected to the vehicle body (2); in the working state, the first conveying section (121) is located below the discharge port.

9. The crushing and screening equipment according to claim 8, characterized in that, The crusher (3) is provided with multiple discharge ports; the conveyor belt folding structure (1) is provided with multiple, and each conveyor belt folding structure (1) is connected to the vehicle body (2) through the corresponding bracket (11); in the working state, the first conveying section (121) on each conveyor belt folding structure (1) is located below the corresponding discharge port.

10. The crushing and screening equipment according to claim 9, characterized in that, The crusher (3) is provided with a coarse material discharge port, a medium material discharge port and a fine material discharge port; The conveyor belt folding structure (1) has three parts, namely a coarse material belt folding structure (4), a medium material belt folding structure (5), and a fine material belt folding structure (6); in the working state, the first conveying section (121) on the coarse material belt folding structure (4) is located below the coarse material outlet, the first conveying section (121) on the medium material belt folding structure (5) is located below the medium material outlet, and the first conveying section (121) on the fine material belt folding structure (6) is located below the fine material outlet.

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