A backflow prevention device for a hill climbing conveyor

Abstract

The utility model discloses a kind of anti-back material devices of climbing conveyor, solve the problem that belt conveyor in prior art will appear reverse after power failure. The utility model includes base, a pair of installation arms are rotationally arranged on base, respectively mirror image symmetry are arranged on two installation arms for the brake mechanism for brake conveyor output shaft, drive mechanism is arranged on base and respectively connected with two installation arms, and reset mechanism is arranged between two installation arms. The utility model reset mechanism can move in the direction of conveyor output shaft after power failure of conveyor, installation arm drives brake mechanism to move synchronously, and make brake mechanism contact with conveyor output shaft, so as to brake conveyor output shaft, so as to prevent reverse phenomenon of conveyor output shaft after power failure.

Description

Technical Field

[0001] This utility model belongs to the field of belt conveyor technology, specifically relating to a backflow prevention device for an inclined conveyor. Background Technology

[0002] Conveyors can be classified according to their operation method as follows: integrated loading and unloading conveyors, belt conveyors, screw conveyors, bucket elevators, roller conveyors, chain conveyors, mesh belt conveyors, and chain conveyors.

[0003] In ore mining, due to the steep slopes and long transport distances at the mining site, belt conveyors are typically used. Existing belt conveyors usually use long, angled belts. During normal production, these long belts operate continuously to ensure consistent and stable production. If the belt loses power or stops while carrying material, and the belt backstop fails to activate, the belt will reverse, causing material spillage and potentially leading to an accident. Utility Model Content

[0004] This utility model provides a backflow prevention device for an inclined conveyor, which at least solves some of the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A device for preventing material backflow in an inclined conveyor includes a base, a pair of mounting arms rotatably mounted on the base, a braking mechanism mirror-symmetrically mounted on the two mounting arms for braking the output shaft of the conveyor, a drive mechanism mounted on the base and connected to the two mounting arms, and a reset mechanism between the two mounting arms.

[0007] The braking mechanism includes a brake mounting seat on the mounting arm, a buffer mechanism on the brake mounting seat, and brake shoes on the buffer mechanism.

[0008] Furthermore, the buffer mechanism includes several buffer springs disposed on the brake mounting base and connected to the brake shoes, as well as limiting blocks at both ends of the brake mounting base.

[0009] Furthermore, the brake mounting base is provided with a buffer mounting groove, and the buffer spring is installed in the buffer mounting groove.

[0010] Furthermore, the mounting arm has a mounting groove, and the brake mounting seat has a connecting block, which is installed in the mounting groove.

[0011] Furthermore, the drive mechanism includes a hydraulic push rod mounted on the base, a connecting arm A with one end rotatably connected to one of the mounting arms and the other end rotatably connected to the output end of the hydraulic push rod, and a connecting arm B with one end rotatably connected to the connecting arm A and the other end rotatably connected to another mounting arm.

[0012] Furthermore, the connecting arm A is provided with a rotation relief groove, and a first connecting shaft is provided in the rotation relief groove. The output end of the hydraulic push rod is provided with a rotation hole that matches the first connecting shaft. The output end of the hydraulic push rod is rotatably mounted on the first connecting shaft through the rotation hole.

[0013] Furthermore, the connecting arm A is provided with a connecting relief groove, and two second connecting shafts are provided in the connecting relief groove. The two second connecting shafts are rotatably connected to the mounting arm and the connecting arm B, respectively.

[0014] Furthermore, the connecting arm B includes threaded rods rotatably mounted on the connecting arm A and the mounting arm respectively, and a threaded sleeve threadedly connected between the two threaded rods.

[0015] Furthermore, the reset mechanism includes a tension rod that is rotatably mounted on the two mounting arms, a spring frame that slides between the two tension rods, and a spring located in the spring frame and connected to the two tension rods.

[0016] Furthermore, the base is provided with two rotating seats, each containing a rotating shaft. The mounting arm is provided with mounting holes that are compatible with the rotating shaft. The mounting arm is mounted on the rotating shaft through the mounting holes and rotates along the axis of the rotating shaft.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. After the power is cut off, the reset mechanism of this utility model drives the two mounting arms to move toward the output shaft of the conveyor. The mounting arms drive the braking mechanism to move synchronously and make the braking mechanism contact the output shaft of the conveyor, thereby braking the output shaft of the conveyor and preventing the output shaft of the conveyor from reversing after the power is cut off.

[0019] When the conveyor is powered off, the reset mechanism drives the two mounting arms to move toward the conveyor output shaft. The mounting arms drive the brake mounting seat to move synchronously, the brake mounting seat drives the buffer mechanism to move, and the buffer mechanism drives the brake shoes to move, so that the brake shoes come into contact with the conveyor output shaft. The buffer mechanism can prevent hard contact between the brake shoes and the conveyor output shaft, which would cause damage to the brake shoes or the conveyor output shaft. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the braking mechanism of this utility model.

[0022] Figure 3 This is a schematic diagram of the connecting arm A of this utility model.

[0023] Figure 4 This is a schematic diagram of the connecting arm B of this utility model.

[0024] Figure 5 This is a schematic diagram of the hydraulic push rod of this utility model.

[0025] Figure 6 This is a schematic diagram of the reset mechanism of this utility model.

[0026] Figure 7 This is a schematic diagram of the mounting arm of this utility model.

[0027] Figure 8 This is a schematic diagram of the base of this utility model.

[0028] The names corresponding to the reference numerals in the attached figures are as follows:

[0029] 1. Base; 2. Mounting arm; 3. Brake mounting seat; 4. Brake shoe; 5. Buffer spring; 6. Limiting block; 7. Buffer mounting groove; 8. Mounting groove; 9. Connecting block; 10. Hydraulic push rod; 11. Connecting arm A; 12. Connecting arm B; 13. Rotation clearance groove; 14. First connecting shaft; 15. Rotation hole; 16. Connecting clearance groove; 17. Second connecting shaft; 18. Threaded rod; 19. Threaded sleeve; 20. Tension rod; 21. Spring frame; 22. Spring; 23. Rotating seat; 24. Rotation shaft; 25. Mounting hole; 26. Connecting shaft C. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing 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 this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Example 1.

[0034] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0035] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0036] This utility model has two mounting arms 2, which are rotatably mounted on the base 1. Braking mechanisms are respectively mounted on the two mounting arms 2 and are symmetrically distributed. A driving mechanism is mounted on the base 1 and connected to the two mounting arms 2. The driving mechanism drives the two mounting arms 2 to rotate on the base 1. During the rotation, the mounting arms 2 drive the braking mechanisms to rotate synchronously, causing the braking mechanisms to separate from the conveyor output shaft, allowing the conveyor to operate normally. A reset mechanism is located between the two mounting arms 2. After the conveyor is powered off, the reset mechanism drives the two mounting arms 2 to move towards the conveyor output shaft. The mounting arms 2 drive the braking mechanisms to move synchronously and make the braking mechanisms contact the conveyor output shaft, thereby braking the conveyor output shaft and preventing the conveyor output shaft from reversing after power failure.

[0037] The present invention relates to a brake mounting base 3 mounted on mounting arm 2, a buffer mechanism mounted on brake mounting base 3, and brake shoes 4 mounted on buffer mechanism. The buffer mechanism can prevent hard contact between brake shoes 4 and conveyor output shaft, thereby preventing damage to brake shoes 4 or conveyor output shaft. In use, when the conveyor is powered off, the reset mechanism drives the two mounting arms 2 to move toward the conveyor output shaft. The mounting arms 2 drive the brake mounting base 3 to move synchronously, the brake mounting base 3 drives the buffer mechanism to move, and the buffer mechanism drives the brake shoes 4 to move, thereby making the brake shoes 4 contact the conveyor output shaft, thus braking the conveyor output shaft and preventing the conveyor output shaft from reversing.

[0038] Example 2.

[0039] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0040] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0041] The buffer mechanism includes several buffer springs 5 ​​mounted on the brake mounting base 3 and connected to the brake shoes 4, as well as limiting blocks 6 at both ends of the brake mounting base 3.

[0042] This embodiment 2 provides a more preferred structure for the buffer mechanism based on embodiment 1. Specifically, the buffer mechanism includes several buffer springs 5 ​​disposed on the brake mounting base 3 and connected to the brake shoe 4, as well as limiting blocks 6 at both ends of the brake mounting base 3.

[0043] This utility model has six buffer springs 5, which are mounted on the brake mounting base 3. The buffer springs 5 ​​can pre-brake the output shaft of the conveyor. There are two limit blocks 6, which are bolted to both ends of the brake mounting base 3. The limit blocks 6 can limit the movement distance of the brake shoes 4. In use, the reset mechanism drives the two mounting arms 2 to move towards the output shaft of the conveyor. The two mounting arms 2 drive the corresponding brake mounting base 3 to move synchronously. The brake mounting base 3 drives the buffer springs 5 ​​to move, and the buffer springs 5 ​​drive the brake shoes 4 to move. When the brake shoes 4 come into contact with the output shaft of the conveyor, the brake shoes 4 stop moving. The reset mechanism continues to drive the mounting arms 2 to move towards the output shaft of the conveyor, so that the brake shoes 4 squeeze the buffer springs 5. When the limit blocks 6 abut against the brake shoes 4, the output shaft of the conveyor stops running.

[0044] Example 3.

[0045] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0046] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0047] The buffer mechanism includes several buffer springs 5 ​​mounted on the brake mounting base 3 and connected to the brake shoes 4, as well as limiting blocks 6 at both ends of the brake mounting base 3.

[0048] The brake mounting base 3 is provided with a buffer mounting groove 7, and the buffer spring 5 is installed in the buffer mounting groove 7.

[0049] This embodiment 3 provides a more preferred structure for the brake mounting base 3 based on embodiment 2. Specifically, the brake mounting base 3 is provided with a buffer mounting groove 7, and the buffer spring 5 is installed in the buffer mounting groove 7.

[0050] The buffer mounting groove 7 of this utility model is formed on the brake mounting seat 3, and the buffer spring 5 is installed in the buffer mounting groove 7. The buffer mounting groove 7 facilitates the installation of the buffer spring 5.

[0051] Example 4.

[0052] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0053] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0054] The mounting arm 2 has a mounting groove 8, and the brake mounting seat 3 has a connecting block 9, which is installed in the mounting groove 8.

[0055] This embodiment 4 provides a more preferred structure for the mounting arm 2 based on embodiment 1. Specifically, the mounting arm 2 is provided with a mounting groove 8, and the brake mounting seat 3 is provided with a connecting block 9, which is installed in the mounting groove 8.

[0056] The utility model has a mounting arm 2 with a mounting groove 8 and a brake mounting base 3 with a connecting block 9. The connecting block 9 is installed in the mounting groove 8. The brake mounting base 3 and the connecting block 9 are an integral structure. The mounting groove 8 and the connecting block 9 cooperate to facilitate the installation of the brake mounting base 3.

[0057] Example 5.

[0058] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0059] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0060] The drive mechanism includes a hydraulic push rod 10 mounted on a base 1, a connecting arm A11 whose one end is rotatably connected to one of the mounting arms 2 and whose other end is rotatably connected to the output end of the hydraulic push rod 10, and a connecting arm B12 whose one end is rotatably connected to the connecting arm A11 and whose other end is rotatably connected to another mounting arm 2.

[0061] This embodiment 5 provides a more preferred structure for the drive mechanism based on embodiment 1. Specifically, the drive mechanism includes a hydraulic push rod 10 mounted on the base 1, a connecting arm A11 with one end rotatably connected to one of the mounting arms 2 and the other end rotatably connected to the output end of the hydraulic push rod 10, and a connecting arm B12 with one end rotatably connected to the connecting arm A11 and the other end rotatably connected to another mounting arm 2.

[0062] The hydraulic push rod 10 of this utility model is mounted on the base 1. One end of the connecting arm A11 is rotatably connected to the output end of the hydraulic push rod 10, and the other end is rotatably connected to one of the mounting arms 2. One end of the connecting arm B12 is rotatably connected to the other mounting arm 2, and the other end is rotatably connected to the connecting arm A11.

[0063] In use, when the conveyor is running normally, the output end of the hydraulic push rod 10 rises, pushing the connecting arm A11 to move. Under the action of the lever, the connecting arm A11 rotates on the base 1. At the same time, during the rotation, the connecting arm A11 drives the connecting arm B12 to move downward. As the connecting arm B12 moves downward, it drives the two mounting arms 2 to rotate on the base 1, causing the two mounting arms 2 to open outward. When the mounting arms 2 open, the brake mounting seat 3 moves with the corresponding mounting arm 2. The brake mounting seat 3 drives the buffer spring 5 to move, and the buffer spring 5 drives the brake shoes 4 to move, thereby separating the two brake shoes 4 from the conveyor output shaft, allowing the output machine to run normally.

[0064] The connecting arm B12 of this utility model is inclinedly disposed between the connecting arm A11 and the mounting arm 2.

[0065] The distance between the brake shoe 4 and the outer wall of the conveyor output shaft of this utility model is 1-3 mm.

[0066] Example 6.

[0067] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0068] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0069] The drive mechanism includes a hydraulic push rod 10 mounted on a base 1, a connecting arm A11 whose one end is rotatably connected to one of the mounting arms 2 and whose other end is rotatably connected to the output end of the hydraulic push rod 10, and a connecting arm B12 whose one end is rotatably connected to the connecting arm A11 and whose other end is rotatably connected to another mounting arm 2.

[0070] The connecting arm A11 is provided with a rotation relief groove 13, and a first connecting shaft 14 is provided in the rotation relief groove 13. The output end of the hydraulic push rod 10 is provided with a rotation hole 15 that is adapted to the first connecting shaft 14. The output end of the hydraulic push rod 10 is rotatably mounted on the first connecting shaft 14 through the rotation hole 15.

[0071] Based on embodiment 5, this embodiment 6 provides a more preferred structure for the connecting arm A11. Specifically, the connecting arm A11 is provided with a rotation relief groove 13, and a first connecting shaft 14 is provided in the rotation relief groove 13. The output end of the hydraulic push rod 10 is provided with a rotation hole 15 that is adapted to the first connecting shaft 14. The output end of the hydraulic push rod 10 is rotatably mounted on the first connecting shaft 14 through the rotation hole 15.

[0072] The connecting arm A11 of this utility model is provided with a rotation relief groove 13, and the first connecting shaft 14 is inserted into the rotation relief groove 13. The output end of the hydraulic push rod 10 is provided with a rotation hole 15 that is adapted to the first connecting shaft 14. The output end of the hydraulic push rod 10 is rotatably mounted on the first connecting shaft 14 through the rotation hole 15, so that the output end of the hydraulic push rod 10 can drive the connecting arm A11 to rotate when rising or falling.

[0073] Example 7.

[0074] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0075] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0076] The drive mechanism includes a hydraulic push rod 10 mounted on a base 1, a connecting arm A11 whose one end is rotatably connected to one of the mounting arms 2 and whose other end is rotatably connected to the output end of the hydraulic push rod 10, and a connecting arm B12 whose one end is rotatably connected to the connecting arm A11 and whose other end is rotatably connected to another mounting arm 2.

[0077] The connecting arm A11 is provided with a connecting clearance groove 16, and two second connecting shafts 17 are provided in the connecting clearance groove 16. The two second connecting shafts 17 are rotatably connected to the mounting arm 2 and the connecting arm B12 respectively.

[0078] Based on embodiment 5, this embodiment 7 provides a more preferred structure for the connecting arm A11, specifically: the connecting arm A11 is provided with a connecting relief groove 16, and two second connecting shafts 17 are provided in the connecting relief groove 16, and the two second connecting shafts 17 are rotatably connected to the mounting arm 2 and the connecting arm B12 respectively.

[0079] This utility model relates to a connecting relief groove 16 provided on a connecting arm A11. Two second connecting shafts 17 are provided, each inserted into the connecting relief groove 16. The connecting arm A11 has connecting relief holes adapted to the second connecting shafts 17, and the mounting arm 2 has rotating connecting holes A adapted to the second connecting shafts 17. During installation, the connecting arm A11 is positioned within the connecting relief groove 16, with the connecting relief holes aligned with the rotating connecting holes A. One of the second connecting shafts 17 is inserted into both the rotating connecting hole A and the connecting relief hole, thereby connecting the connecting arm A11 and the mounting arm 2. The number of connecting relief holes corresponds to the number of second connecting shafts 17.

[0080] The connecting arm B12 has a rotating connecting hole B at each end. During installation, the rotating connecting hole B on one end of the connecting arm B12 is aligned with the connecting clearance hole. At the same time, another second connecting shaft 17 is inserted into the rotating connecting hole B and the connecting clearance hole, so that the connecting arm B12 can rotate along the axis of the second connecting shaft 17, thereby connecting the connecting arm A11 and the connecting arm B12. The other end of the connecting arm B12 is connected to the mounting arm 2.

[0081] Example 8.

[0082] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0083] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0084] The drive mechanism includes a hydraulic push rod 10 mounted on a base 1, a connecting arm A11 whose one end is rotatably connected to one of the mounting arms 2 and whose other end is rotatably connected to the output end of the hydraulic push rod 10, and a connecting arm B12 whose one end is rotatably connected to the connecting arm A11 and whose other end is rotatably connected to another mounting arm 2.

[0085] The connecting arm B12 includes threaded rods 18 rotatably mounted on the connecting arm A11 and the mounting arm 2, respectively, and a threaded sleeve 19 threadedly connected between the two threaded rods 18.

[0086] This embodiment 8 provides a more preferred structure for the connecting arm B12 based on embodiment 5. Specifically, the connecting arm B12 includes threaded rods 18 that are rotatably disposed on the connecting arm A11 and the mounting arm 2, and a threaded sleeve 19 that is threadedly connected between the two threaded rods 18.

[0087] In this invention, two rotating connecting holes B are respectively placed on two threaded rods 18. A connecting shaft C26 is provided on the mounting arm 2. Specifically, the mounting arm 2 has rotating connecting holes C that are adapted to the connecting shaft C26. During installation, one threaded rod 18 is located within the connecting relief groove 16, aligning the rotating connecting hole B with the connecting relief hole. Simultaneously, one second connecting shaft 17 is inserted into the rotating connecting hole B and the connecting relief hole. The other threaded rod 18 is located within the mounting arm 2, aligning the rotating connecting hole C with the rotating connecting hole B on the other threaded rod 18. The connecting shaft C26 is inserted into the rotating connecting hole C and the rotating connecting hole B, thereby connecting the threaded rod 18 to the mounting arm 2. The threads on the two threaded rods 18 have opposite directions of rotation. A threaded sleeve 19 is threaded between the two threaded rods 18. In use, by rotating the threaded sleeve 19, the two threaded rods 18 move within the threaded sleeve 19, thereby adjusting the distance between the two mounting arms 2.

[0088] Example 9.

[0089] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0090] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0091] The reset mechanism includes tension rods 20 that are rotatably mounted on two mounting arms 2 and slidably connected to spring frames 21, spring frames 21 that are slidably connected to the two tension rods 20, and springs 22 that are located inside the spring frames 21 and connected to the two tension rods 20.

[0092] This embodiment 9 provides a more preferred structure for the reset mechanism based on embodiment 1. Specifically, the reset mechanism includes tension rods 20 that are rotatably mounted on the two mounting arms 2, a spring frame 21 that is slidably mounted between the two tension rods 20, and a spring 22 that is mounted in the spring frame 21 and connected to the two tension rods 20.

[0093] In this invention, tension rods 20 are rotatably mounted on mounting arms 2, and spring frames 21 are slidably mounted on the two tension rods 20. Springs 22 are installed inside the spring frames 21, and both ends of the springs 22 are connected to one tension rod 20. In use, when the conveyor is powered off, the springs 22 pull the two tension rods 20 to slide inside the spring frames 21. At the same time, the two tension rods 20 drive the corresponding mounting arms 2 to clamp, the mounting arms 2 drive the corresponding brake mounting seats 3 to move, the brake mounting seats 3 drive the buffer springs 5 ​​to move, and the buffer springs 5 ​​drive the brake shoes 4 to move, so that the brake shoes 4 come into contact with the output shaft of the conveyor, thereby braking the output shaft of the conveyor and preventing the inclined belt from reversing under the action of gravity.

[0094] The mounting arm 2 and the tension rod 20 of this utility model are provided with reset mounting holes. The pin is inserted into the two reset mounting holes, thereby rotatably connecting the mounting arm 2 and the tension rod 20, and enabling the tension rod 20 to rotate along the pin axis.

[0095] The tension of spring 22 in this invention is greater than the elastic force of buffer spring 5.

[0096] Example 10.

[0097] like Figure 1-8 As shown, the present invention provides a device for preventing material backflow in an inclined conveyor, comprising a base 1, a pair of mounting arms 2 rotatably mounted on the base 1, a braking mechanism mirror-symmetrically mounted on the two mounting arms 2 for braking the output shaft of the conveyor, a driving mechanism mounted on the base 1 and connected to the two mounting arms 2 respectively, and a reset mechanism between the two mounting arms 2.

[0098] The braking mechanism includes a brake mounting seat 3 on the mounting arm 2, a buffer mechanism on the brake mounting seat 3, and a brake shoe 4 on the buffer mechanism.

[0099] The base 1 is provided with two rotating seats 23, and the rotating seats 23 are provided with rotating shafts 24. The mounting arm 2 is provided with mounting holes 25 that are adapted to the rotating shafts 24. The mounting arm 2 is mounted on the rotating shafts 24 through the mounting holes 25 and rotates along the axis of the rotating shafts 24.

[0100] This embodiment 10 provides a more preferred structure for the base 1 based on embodiment 1. Specifically, the base 1 is provided with two rotating seats 23, and the rotating seats 23 are provided with rotating shafts 24. The mounting arm 2 is provided with mounting holes 25 that are adapted to the rotating shafts 24. The mounting arm 2 is mounted on the rotating shafts 24 through the mounting holes 25 and rotates along the axis of the rotating shafts 24.

[0101] This utility model has two rotating seats 23, which are installed on the base 1. The rotating shaft 24 is set on the rotating seat 23. The mounting arm 2 is provided with mounting holes 25 that are adapted to the rotating shaft 24. The mounting arm 2 is installed on the rotating shaft 24 through the mounting holes 25 and rotates along the axis of the rotating shaft 24. In use, the mounting arm 2 can rotate along the axis of the rotating shaft 24 under the drive of the hydraulic push rod 10 or the spring 22, so that the mounting arm 2 drives the brake shoe 4 to separate or contact the output shaft of the conveyor during the rotation process.

[0102] Working principle

[0103] When this utility model is in use, when the conveyor needs to operate normally, the output end of the hydraulic push rod 10 rises, and the output end of the hydraulic push rod 10 pushes the connecting arm A11 to rotate. During the rotation of the connecting arm A11, the connecting arm B12 moves downward. At the same time, when the connecting arm B12 moves downward, it drives the two mounting arms 2 to rotate on the base 1, so that the two mounting arms 2 open. When the two mounting arms 2 open, they respectively drive the corresponding tension rods 20 to slide in the spring frame 21 and stretch the spring 22. At the same time, when the mounting arms 2 open, they drive the corresponding brake mounting seat 3 to move. The brake mounting seat 3 drives the buffer spring 5 to move, and the buffer spring 5 drives the brake shoe 4 to move, so that the brake shoe 4 separates from the output shaft of the conveyor, thereby avoiding affecting the normal operation of the conveyor.

[0104] When the conveyor is powered off, the hydraulic push rod 10 no longer provides upward support force to the connecting arm A11. The spring 22 pulls the two tension rods 20 to slide within the spring frame 21. At the same time, the two tension rods 20 drive the corresponding mounting arms 2 to move. The mounting arms 2 drive the corresponding brake mounting seats 3 to move. The brake mounting seats 3 drive the buffer springs 5 ​​to move. The buffer springs 5 ​​drive the brake shoes 4 to move. When the brake shoes 4 come into contact with the conveyor output shaft, the two mounting arms 2 continue to move under the tension of the springs 22, thereby causing the brake shoes 4 to squeeze the buffer springs 5 ​​until the brake shoes 4 abut against the limit block 6, thus completing the braking of the conveyor output shaft.

[0105] The hydraulic push rod 10 and conveyor used in this utility model are existing technologies and can be purchased and used directly on the market. Therefore, the structure, circuit and principle of the hydraulic push rod 10 and conveyor will not be described in detail here.

[0106] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. 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 or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A backflow prevention device for an inclined conveyor, characterized in that, Includes a base (1), a pair of mounting arms (2) rotatably mounted on the base (1), a braking mechanism mirror-symmetrically mounted on the two mounting arms (2) for braking the output shaft of the conveyor, a driving mechanism mounted on the base (1) and connected to the two mounting arms (2) respectively, and a reset mechanism between the two mounting arms (2). The braking mechanism includes a brake mounting seat (3) on the mounting arm (2), a buffer mechanism on the brake mounting seat (3), and a brake shoe (4) on the buffer mechanism. The buffer mechanism includes several buffer springs (5) mounted on the brake mounting base (3) and connected to the brake shoes (4), as well as limiting blocks (6) at both ends of the brake mounting base (3).

2. The anti-backflow device for an inclined conveyor according to claim 1, characterized in that, The brake mounting base (3) is provided with a buffer mounting groove (7), and the buffer spring (5) is installed in the buffer mounting groove (7).

3. The anti-backflow device for an inclined conveyor according to claim 1, characterized in that, The mounting arm (2) has a mounting groove (8), and the brake mounting seat (3) has a connecting block (9), which is installed in the mounting groove (8).

4. The anti-backflow device for an inclined conveyor according to claim 1, characterized in that, The drive mechanism includes a hydraulic push rod (10) mounted on a base (1), a connecting arm A (11) with one end rotatably connected to one of the mounting arms (2) and the other end rotatably connected to the output end of the hydraulic push rod (10), and a connecting arm B (12) with one end rotatably connected to the connecting arm A (11) and the other end rotatably connected to the other mounting arm (2).

5. The anti-backflow device for an inclined conveyor according to claim 4, characterized in that, The connecting arm A (11) is provided with a rotation relief groove (13), and a first connecting shaft (14) is provided in the rotation relief groove (13). A rotation hole (15) adapted to the first connecting shaft (14) is opened on the output end of the hydraulic push rod (10). The output end of the hydraulic push rod (10) is rotatably installed on the first connecting shaft (14) through the rotation hole (15).

6. The anti-backflow device for an inclined conveyor according to claim 4, characterized in that, The connecting arm A (11) is provided with a connecting relief groove (16), and two second connecting shafts (17) are provided in the connecting relief groove (16). The two second connecting shafts (17) are rotatably connected to the mounting arm (2) and the connecting arm B (12) respectively.

7. The anti-backflow device for an inclined conveyor according to claim 4, characterized in that, The connecting arm B (12) includes threaded rods (18) rotatably mounted on the connecting arm A (11) and the mounting arm (2), respectively, and a threaded sleeve (19) threadedly connected between the two threaded rods (18).

8. The anti-backflow device for an inclined conveyor according to claim 1, characterized in that, The reset mechanism includes a tension rod (20) that is rotatably mounted on two mounting arms (2), a spring frame (21) that slides between the two tension rods (20), and a spring (22) that is located in the spring frame (21) and connected to the two tension rods (20).

9. The anti-backflow device for an inclined conveyor according to claim 1, characterized in that, The base (1) is provided with two rotating seats (23), and the rotating seats (23) are provided with a rotating shaft (24). The mounting arm (2) is provided with a mounting hole (25) that is compatible with the rotating shaft (24). The mounting arm (2) is mounted on the rotating shaft (24) through the mounting hole (25) and rotates along the axis of the rotating shaft (24).

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