Coal transportation brake lubricating structure

Abstract

The utility model relates to the technical field of conveyer belt, and disclose a coal transportation brake lubrication structure. This coal transportation brake lubrication structure includes: bottom plate, the top of bottom plate is fixedly installed with support frame, the inside fixed mounting of support frame has drive motor, the top of bottom plate is fixedly installed with limit stop, the front side fixed mounting of limit stop has speed reducer, the top of bottom plate is fixedly installed with electric control box, when power off shutdown, hydraulic piston cannot keep the pressure maintaining state, the reset spring will drive the movable plate to remove, the movable plate will slowly discharge the hydraulic oil in the rear side chamber inside the hydraulic piston when moving, and gradually clamping brake disc is driven by the connecting column with the limit disc, after the hydraulic oil in the hydraulic piston is completely discharged, the relative pressure between limit disc and brake disc reaches the maximum value, and the relative friction between limit disc and brake disc is braked, thereby making the braking force gradually gently increases, avoids the damage of transmission shaft.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt technology, specifically to a braking and lubrication structure for coal transportation. Background Technology

[0002] Conveyor belts and belt conveyors are widely used in agriculture, mining, and transportation industries to transport various solid lumps and powders or packaged goods. Conveyor belts enable continuous, high-efficiency, and steep-angle transportation. They are safe to operate, easy to use and maintain, and have low transportation costs. They can also shorten transportation distances, reduce project costs, and save manpower and resources.

[0003] The existing Chinese utility model patent with publication number CN216862683U discloses an inductive emergency braking device for a conveyor belt, including a transmission operation component and an inductive braking component. Two baffles are symmetrically arranged on both sides of the conveyor belt. A cross-shaped groove is formed on the upper surface of each baffle. A sliding rod is slidably connected to the inner wall of the cross-shaped groove. A housing penetrates the outer wall of the sliding rod. The two sides of the housing slide against the inner wall of the cross-shaped groove. Two through holes are symmetrically opened on both sides of the housing. A first groove is evenly formed on the inner wall of the housing. When an object blocks the infrared rays, the infrared receiver transmits a signal to the controller, thereby driving the motor. The pull rope connected to the motor output shaft tightens, actuating the pull rope switch, thus stopping the motor and braking the transmission operation component. This effectively brakes the transmission operation component in the event of a worker falling and losing their balance, greatly preventing accidents.

[0004] Existing conveyor belt braking mechanisms cannot slowly stop the conveyor belt when a power outage occurs. During braking, the drive shaft may be damaged due to excessive braking force. In addition, existing conveyor belts are generally powered by a motor-driven reducer. The motor shaft rotates at high speed, and the bearings between the motor housing and the shaft also rotate at high speed, which will reduce the service life of the bearings. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides a braking and lubrication structure for coal transportation, which has the advantages of improving the service life of motor bearings and preventing damage to the transmission shaft during braking, thus solving the above-mentioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a braking and lubrication structure for coal transportation, comprising: a base plate, a support frame fixedly installed on the top of the base plate, a drive motor fixedly installed inside the support frame, a limit plate fixedly installed on the top of the base plate, a reducer fixedly installed on the front side of the limit plate, an electrical control box fixedly installed on the top of the base plate, an electric grease lubrication pump fixedly installed on the top of the base plate, a brake disc fixedly installed at the center of the output shaft of the reducer, a connecting frame fixedly installed on the top of the base plate, a hydraulic piston fixedly installed on the front side of the connecting frame, a movable plate fixedly installed at the movable end of the hydraulic piston, a connecting column inserted and fixedly inserted on the front side of the movable plate, a return spring inserted and installed on the outer side of the connecting column, and a limit plate fixedly installed at one end of the connecting column; the electrical control box can adjust the power of the electric grease lubrication pump according to the bearing temperature of the drive motor.

[0009] As a preferred embodiment of this utility model, the drive motor is fixedly connected to the base plate via a support frame, the shaft of the drive motor is fixedly connected to the power input end of the reducer, and the electric grease lubrication pump is connected to the bearing of the drive motor via a pipeline structure; the drive motor can provide power to the reducer.

[0010] As a preferred embodiment of this utility model, the brake disc is fixedly connected to the output shaft of the reducer by bolts, the top center of the connecting frame is an annular structure, and the diameter of the annular structure at the top of the connecting frame is larger than the diameter of the output shaft of the reducer; the reducer can drive the conveyor belt to rotate.

[0011] As a preferred technical solution of this utility model, the brake disc is located at the center of the annular structure on both the front and rear sides of the top of the connecting frame. The hydraulic piston is installed symmetrically on both the front and rear sides of the connecting frame with the center of the connecting frame as the reference. The hydraulic piston can drive the movable plate to move.

[0012] As a preferred technical solution of this utility model, the movable plate is movably connected to the connecting frame through a hydraulic piston, and the connecting column is installed on one side of the movable plate in a "+" shape with the center of the movable plate as the reference. One end of the connecting column is provided with an annular protrusion structure; the connecting column can facilitate the movable plate to drive the limiting plate to move.

[0013] As a preferred embodiment of this utility model, the annular structure surface of the connecting frame is provided with openings corresponding to the connecting columns, the connecting columns and the connecting frame are slidably connected, and the return spring is located between the connecting frame and the movable plate; the connecting frame can limit the position of the connecting columns.

[0014] As a preferred embodiment of this utility model, one end of the return spring is fixedly connected to the movable plate, and the other end is fixedly connected to the connecting frame. The limiting disc is symmetrically installed on the front and rear sides of the brake disc through the connecting column. The limiting disc can clamp the brake disc for braking.

[0015] Compared with the prior art, this utility model provides a braking and lubrication structure for coal transportation, which has the following beneficial effects:

[0016] 1. This utility model, through the setting of a hydraulic piston, ensures that the hydraulic piston is in an extended pressure-holding state during normal device startup. Since the return spring is located between the connecting frame and the movable plate, and its two ends are fixedly connected to the connecting frame and the movable plate respectively, the position of the movable plate changes when the hydraulic piston is in the extended state. This stretches the return spring and drives the limit plate to move via the connecting column, maintaining a certain distance between the limit plate and the brake disc. This prevents the limit plate from affecting the rotation of the brake disc under normal operating conditions. When the power is off and the machine is stopped, the hydraulic piston cannot maintain the pressure-holding state, and the return spring will drive the movable plate to move. During this movement, the movable plate slowly discharges the hydraulic oil from the rear chamber of the hydraulic piston and, via the connecting column, gradually clamps the brake disc with the limit plate. After the hydraulic oil inside the hydraulic piston is completely discharged, the relative pressure between the limit plate and the brake disc reaches its maximum value. Braking is achieved through the relative friction between the limit plate and the brake disc, thus gradually and smoothly increasing the braking force and preventing damage to the drive shaft.

[0017] 2. This utility model uses an electric grease lubrication pump to monitor the temperature of the drive motor bearing in real time via a temperature sensor. The power of the electric grease lubrication pump is then adjusted by the electrical control box based on the bearing temperature to regulate the flow rate of the lubricating oil in the circulating oil circuit. This helps to remove the heat generated during bearing rotation and prevents the drive motor bearing from accumulating heat due to prolonged high-speed rotation, which would affect the bearing's service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the electric grease lubrication pump of this utility model;

[0020] Figure 3 This is a schematic diagram of the brake disc mounting structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the limiting plate of this utility model;

[0022] The components are: 1. Base plate; 11. Support frame; 12. Drive motor; 13. Limit plate; 14. Reducer; 15. Electrical control box; 16. Electric grease lubrication pump; 17. Brake disc; 18. Connecting frame; 19. Hydraulic piston; 110. Movable plate; 111. Connecting column; 112. Return spring; 113. Limit plate. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description 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 this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4 In this embodiment, a coal transportation braking and lubrication structure includes: a base plate 1, a support frame 11 fixedly installed on the top of the base plate 1, a drive motor 12 fixedly installed inside the support frame 11, a limit plate 13 fixedly installed on the top of the base plate 1, a reducer 14 fixedly installed on the front side of the limit plate 13, an electrical control box 15 fixedly installed on the top of the base plate 1, an electric grease lubrication pump 16 fixedly installed on the top of the base plate 1, a brake disc 17 fixedly installed at the center of the output shaft of the reducer 14, a connecting frame 18 fixedly installed on the top of the base plate 1, a hydraulic piston 19 fixedly installed on the front side of the connecting frame 18, a movable plate 110 fixedly installed at the movable end of the hydraulic piston 19, a connecting column 111 inserted and fixedly inserted on the front side of the movable plate 110, a return spring 112 inserted and installed on the outer side of the connecting column 111, and a limit plate 113 fixedly installed at one end of the connecting column 111.

[0027] The drive motor 12 is fixedly connected to the base plate 1 via the support frame 11. The reducer 14 is model WHC150-40-II. The shaft of the drive motor 12 is fixedly connected to the power input end of the reducer 14. The electric grease lubrication pump 16 is model DBT. The electric grease lubrication pump 16 is connected to the bearing of the drive motor 12 via a pipeline structure. The brake disc 17 is fixedly connected to the output shaft of the reducer 14 via bolts. The top center of the connecting frame 18 is an annular structure. The diameter of the annular structure at the top of the connecting frame 18 is larger than the diameter of the output shaft of the reducer 14. The brake disc 17 is located at the center of the annular structures on both the front and rear sides of the top of the connecting frame 18. The hydraulic piston 19 is installed symmetrically on the connecting frame 18, with the center of the connecting frame 18 as the reference. On the front and rear sides of the frame 18, the movable plate 110 is movably connected to the connecting frame 18 through the hydraulic piston 19. The connecting column 111 is installed in a cross shape on one side of the movable plate 110 with the center of the movable plate 110 as the reference. One end of the connecting column 111 is provided with an annular protrusion structure. The annular structure surface of the connecting frame 18 is provided with opening structures corresponding to the connecting column 111. The connecting column 111 and the connecting frame 18 are slidably connected. The return spring 112 is located between the connecting frame 18 and the movable plate 110. One end of the return spring 112 is fixedly connected to the movable plate 110, and the other end is fixedly connected to the connecting frame 18. The limiting disc 113 is symmetrically installed on the front and rear sides of the brake disc 17 through the connecting column 111.

[0028] Specifically, the base plate 1 provides support for the equipment above, and the support frame 11 facilitates the fixed connection between the drive motor 12 and the base plate 1, ensuring that the relative position between the drive motor 12 and the reducer 14 remains constant. This allows the shaft of the drive motor 12 to always be fixedly connected to the input shaft of the reducer 14. The drive motor 12 drives the reducer 14, enabling the reducer 14 to rotate the drive shaft of the conveyor belt. The reducer 14 increases the torque of the conveyor belt during rotation. A motor temperature sensor (model GWP200) monitors the drive motor temperature in real time. The temperature of the bearing in motor 12 is monitored, and the power of the electric grease lubrication pump 16 is adjusted by the electrical control box 15 (model KXJ1140(660)) based on the bearing temperature. This adjusts the flow rate of the lubricating oil in the circulating oil circuit to remove the heat generated during bearing rotation, preventing heat buildup in the bearing of drive motor 12 due to prolonged high-speed rotation, which would affect bearing life. The brake disc 17 is located at the center of the output shaft of reducer 14 and between the limit discs 113. The movable plate 110 is connected to the connecting frame 1 via the hydraulic piston 19. The connection between the connecting frame 18 and the movable plate 110 is movable. When the device is started normally, the hydraulic piston 19 is in the extended pressure-holding state. Since the return spring 112 is located between the connecting frame 18 and the movable plate 110, and its two ends are fixedly connected to the connecting frame 18 and the movable plate 110 respectively, when the hydraulic piston 19 is in the extended state, the position of the movable plate 110 changes, which will stretch the return spring 112 and drive the limit plate 113 to move through the connecting column 111. This keeps a certain distance between the limit plate 113 and the brake disc 17, so as to avoid the limit plate 113 affecting the brake disc 17 when the working condition is normal. When the brake disc 17 rotates, the hydraulic piston 19 cannot maintain pressure when the power is off and the machine is stopped. The return spring 112 will drive the movable plate 110 to move. When the movable plate 110 moves, it will slowly discharge the hydraulic oil inside the rear chamber of the hydraulic piston 19, and drive the limiting plate 113 to gradually clamp the brake disc 17 through the connecting column 111. After the hydraulic oil inside the hydraulic piston 19 is completely discharged, the relative pressure between the limiting plate 113 and the brake disc 17 reaches its maximum value, and braking is achieved by the relative friction between the limiting plate 113 and the brake disc 17.

[0029] During operation, when the device is started normally, the hydraulic piston 19 is in an extended pressure-holding state. Since the return spring 112 is located between the connecting frame 18 and the movable plate 110, and its two ends are fixedly connected to the connecting frame 18 and the movable plate 110 respectively, when the hydraulic piston 19 is in the extended state, the position of the movable plate 110 changes, stretching the return spring 112 and causing the limiting plate 113 to move via the connecting column 111. This maintains a certain distance between the limiting plate 113 and the brake disc 17, preventing the limiting plate 113 from affecting the rotation of the brake disc 17 under normal operating conditions. When the power is off and the machine is stopped, the hydraulic piston 19 cannot maintain the pressure-holding state, and the return spring 112 will cause the movable plate 110 to move. As the movable plate 110 moves, it will push the hydraulic piston 19 into the rear chamber. The hydraulic oil in the part is slowly discharged, and through the connecting column 111, the limiting plate 113 gradually clamps the brake disc 17. After the hydraulic oil inside the hydraulic piston 19 is completely discharged, the relative pressure between the limiting plate 113 and the brake disc 17 reaches its maximum value. Braking is achieved through the relative friction between the limiting plate 113 and the brake disc 17, thereby gradually and smoothly increasing the braking force to avoid damage to the drive shaft. The temperature of the drive motor 12 bearing is monitored in real time by a temperature sensor, and the power of the electric grease lubrication pump 16 is adjusted by the electrical control box 15 according to the bearing temperature to adjust the flow rate of the lubricating oil in the circulating oil circuit, so as to remove the heat generated when the bearing rotates, and prevent the drive motor 12 bearing from generating heat due to maintaining high speed for a long time, which would affect the bearing service life.

[0030] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A braking and lubrication structure for coal transportation, characterized in that, include: A base plate (1) is provided, on which a support frame (11) is fixedly installed. A drive motor (12) is fixedly installed inside the support frame (11). A limit plate (13) is fixedly installed on the top of the base plate (1). A reducer (14) is fixedly installed on the front side of the limit plate (13). An electrical control box (15) is fixedly installed on the top of the base plate (1). An electric grease lubrication pump (16) is fixedly installed on the top of the base plate (1). The output shaft of the reducer (14) is fixed at the center. A brake disc (17) is installed. A connecting frame (18) is fixedly installed above the base plate (1). A hydraulic piston (19) is fixedly installed on the front side of the connecting frame (18). A movable plate (110) is fixedly installed on the movable end of the hydraulic piston (19). A connecting column (111) is inserted and fixed on the front side of the movable plate (110). A return spring (112) is inserted and installed on the outside of the connecting column (111). A limit plate (113) is fixedly installed on one end of the connecting column (111).

2. The braking and lubrication structure for coal transportation according to claim 1, characterized in that: The drive motor (12) is fixedly connected to the base plate (1) through the support frame (11), the shaft of the drive motor (12) is fixedly connected to the power input end of the reducer (14), and the electric grease lubrication pump (16) is connected to the bearing of the drive motor (12) through the pipeline structure.

3. The braking and lubrication structure for coal transportation according to claim 1, characterized in that: The brake disc (17) is fixedly connected to the output shaft of the reducer (14) by bolts. The top center of the connecting frame (18) is an annular structure, and the diameter of the annular structure at the top of the connecting frame (18) is larger than the diameter of the output shaft of the reducer (14).

4. The braking and lubrication structure for coal transportation according to claim 1, characterized in that: The brake disc (17) is located at the center of the annular structure on the front and rear sides of the top of the connecting frame (18). The hydraulic piston (19) is installed symmetrically on the front and rear sides of the connecting frame (18) with the center of the connecting frame (18) as the reference.

5. The braking and lubrication structure for coal transportation according to claim 1, characterized in that: The movable plate (110) is connected to the connecting frame (18) via a hydraulic piston (19). The connecting column (111) is installed on one side of the movable plate (110) in a cross shape with the center of the movable plate (110) as the reference. One end of the connecting column (111) is provided with an annular protrusion structure.

6. The braking and lubrication structure for coal transportation according to claim 1, characterized in that: The annular surface of the connecting frame (18) is provided with openings that correspond one-to-one with the connecting column (111). The connecting column (111) and the connecting frame (18) form a sliding connection. The reset spring (112) is located between the connecting frame (18) and the movable plate (110).

7. The braking and lubrication structure for coal transportation according to claim 1, characterized in that: One end of the reset spring (112) is fixedly connected to the movable plate (110), and the other end is fixedly connected to the connecting frame (18). The limiting plate (113) is symmetrically installed on the front and rear sides of the brake disc (17) through the connecting column (111).

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