Six-bar mechanism braking belt device and method

Abstract

The invention discloses a six-rod mechanism belt braking device and method, and belongs to the technical field of belt conveyors. The device comprises an underframe, a sliding cylinder connecting rod device, a guide device and an upper bracket. Wherein the underframe is fixed on a rack of the belt conveyor through U-shaped bolt groups on two sides; the sliding air cylinder connecting rod device comprises a rocker, a piston rod, an air cylinder barrel, a sliding rail and a cylinder barrel limiting bolt, and the sliding air cylinder connecting rod device is installed on the bottom frame. The guide device is arranged in the middle of the underframe for guiding; the bottom of the upper bracket is arranged at the upper part of the guide device; and two sides of the upper bracket are hinged with rockers of the cylinder energy-storage sliding device. The space between carrier rollers of an existing belt conveyor is utilized, a six-rod mechanism movement mode is shown, driving force of an air cylinder is amplified to achieve braking force multiplication, frictional resistance between a damping plate and a conveying belt is driven, high-pressure air is controlled to be introduced into an air pump to enter the rodless end of a cylinder barrel of the air cylinder from a right air hole of the cylinder barrel, and a piston is pushed to complete braking to achieve braking. And the braking accidents of the belt conveyor are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor technology, and in particular to a six-bar linkage braking belt device and braking method suitable for belt conveyors with large inclination angles in high-power braking systems. Background Technology

[0002] The braking system is a key component of belt conveyors. During the braking process of high-power belt conveyors, the brakes must not only overcome the load torque but also continuously absorb and dissipate the heat generated during braking. Currently, high-power controllable braking devices mainly include self-cooling disc brakes, hydraulic brakes, electro-hydraulic actuator brakes, and damping plate auxiliary brakes. Braking (single-point centralized drum or disc brakes driven by multiple power sources such as hydraulic, electro-hydraulic, and electric): When the conveyor stops, excess downward force will act entirely on the centralized brake, causing the brake wheel temperature to rise, and even leading to brake failure and runaway accidents. Brakes are often only installed at the head or position of the conveyor. For long-distance belt conveyors, because the conveyor belt is a viscoelastic material, single-point or centralized braking can cause significant elastic slippage of the conveyor belt, posing a significant safety risk.

[0003] Patent CN201920888736.5 discloses a damping auxiliary braking device for a downward-moving belt conveyor. The drive unit uses a horizontal cylinder linkage mechanism as its power source, and the drive unit moves by relying on rollers contacting the frame surface. A problem exists: taking one set of damping auxiliary braking devices as an example, if the sliding mechanism composed of two sets of telescopic support legs and outriggers does not move synchronously, the entire mechanism will jam, meaning the damping plate will be stuck and unable to brake. This is caused by the four-bar linkage that makes up the adjustable damping buffer braking system. The four components are the damping plate, damping liner, reinforcing rib, and outriggers, plus a lifting bracket, two telescopic support legs, and one lifting roller. Among these, there are two moving components, one revolute joint, two prismatic joints, and one higher pair. The mechanism's degrees of freedom are -1 = 3 × 2 - 2 × 3 - 1, which is insufficient to constitute a complete mechanism. The mechanism itself has insufficient degrees of freedom. If the sliding mechanism composed of the two sets of telescopic support legs and outriggers does not move synchronously, the entire mechanism will jam. Summary of the Invention

[0004] Technical problem: The purpose of this invention is to overcome the shortcomings of the prior art and provide a six-bar linkage brake belt device and braking method that is simple in structure, easy to use, increases braking force, and can avoid jamming.

[0005] Technical Solution: The present invention provides a six-bar linkage braking belt device, comprising a base, a sliding cylinder connecting rod device, a guide device, and an upper support frame disposed between the upper idler rollers of the belt conveyor frame and the upper idler rollers supporting the conveyor belt; the base frame comprises a frame formed by two symmetrically arranged outer side plates and two symmetrical horizontal rectangular steel bars, a longitudinal grooved steel block provided in the middle of the frame, and side longitudinal grooved steel blocks spaced apart on one side of the longitudinal grooved steel block; a slide rail fixing plate is provided above the longitudinal grooved steel block and the spaced-apart side longitudinal grooved steel blocks; the two symmetrical outer side plates are located on the left and right sides, and the two symmetrical... The horizontal rectangular steel bars are symmetrically arranged between the two outer side plates; the central longitudinal channel steel block is located between the middle of the two horizontal rectangular steel bars; the cylinder energy storage sliding device is located on the slide rail fixing plate, and the left and right ends of the cylinder energy storage sliding device are connected to the bottom surfaces of the two sides of the upper bracket via rocker arms; the central longitudinal channel steel block is provided with guide devices located on the front and rear sides of the cylinder energy storage sliding device, and the upper bracket is located on the guide devices, with the top of the guide devices fixedly connected to the bottom surface of the middle of the upper bracket; the outer ends of the outer side plates are respectively provided with U-shaped bolt groups fixed to the belt conveyor frame.

[0006] The outer side plate of the base frame is a right-angled Z-shaped plate, and the inner end face of the outer side plate of the base frame is provided with a triangular reinforcing rib plate.

[0007] The sliding cylinder connecting rod device includes two rockers (left and right), two rocker hinge seats, a piston rod head, a cylinder piston, a cylinder piston rod, a cylinder barrel, a cylinder barrel slide groove, a cylinder barrel left air hole, a cylinder barrel right air hole, a slide rail, and a cylinder barrel limiting bolt. The cylinder piston and cylinder barrel cooperate to form an inlet and outlet sealing cavity, and the cylinder piston rod extends out of the cylinder barrel. The cylinder barrel has a left air hole on the rod-side wall and a cylinder barrel without a rod-side wall. The cylinder has a right air hole; the base rod head of the cylinder barrel is hinged to the right rocker arm; the cylinder barrel slide groove of the cylinder barrel is slidably installed with the slide rail, and the slide rail is installed on the slide rail fixing plate by bolts; the cylinder piston rod extending out of the cylinder barrel is connected to the piston rod head, and the piston rod head is hinged to the right rocker arm; the left and middle rocker arms are respectively hinged to the left and right rocker arm hinge seats, and the left and right rocker arm hinge seats are installed at the bottom of the upper bracket; the cylinder barrel limiting bolt is installed on the slide rail fixing position.

[0008] The guide assembly includes a guide cylinder and a guide shaft; the guide cylinder is fitted onto the guide shaft, the lower end of the guide shaft is fixedly connected to the middle longitudinal channel steel block of the base frame, and the upper end of the guide cylinder is fixed to the upper bracket.

[0009] The upper bracket includes a damping plate, a damping base plate, fixing bolts, an airfoil connecting plate, a transverse connecting plate, and a side connecting plate. The damping plate is divided into three parts: left, middle, and right. The cross-section of the damping plate is airfoil-shaped. The three damping plates are respectively mounted on the three damping base plates by fixing bolts. The three damping base plates are fixed together by two front and rear airfoil connecting plates. The two airfoil connecting plates are fixed together by one transverse connecting plate and two side connecting plates.

[0010] The braking method of the above-mentioned six-bar mechanism brake belt device involves placing the six-bar mechanism brake belt device on the belt conveyor frame located between two adjacent upper idler roller devices, and fixing it to the belt conveyor frame with a U-bolt group; When the belt conveyor is running normally, the control air pump introduces high-pressure gas into the cylinder through the left air hole of the cylinder and enters the cylinder rod sealing chamber side, driving the cylinder piston to retract. The right air hole of the cylinder releases gas from the other side of the cylinder, and the two rockers rotate inward, causing the combination of the guide cylinder and the upper bracket to move down to the lower limit position. At this time, the conveyor belt and the damping plate of the upper bracket are no longer in contact. When the belt conveyor brakes suddenly, the control air pump introduces high-pressure gas into the rodless sealing chamber of the cylinder through the right air hole, while the left air hole releases gas from the other side of the cylinder, driving the cylinder piston to extend. This, in turn, drives the two rockers to rotate outward to the vertical direction. At this time, the cylinder of the cylinder energy storage sliding device slides to the position of the cylinder limit bolt, and the guide cylinder and upper bracket assembly rise accordingly. This causes the damping plate of the upper bracket to come into contact with the conveyor belt and generate braking force through friction, thereby ensuring the braking safety of the belt conveyor.

[0011] Beneficial Effects: Due to the adoption of the above technical solution, this invention is applicable to the operation of belt conveyors with large inclination angles, greatly reducing braking accidents of belt conveyors. This invention utilizes the space between the idlers of existing belt conveyors, adding a six-bar linkage braking device and operating method composed of components. The six-bar linkage of the braking belt device consists of six links such as... Figure 6As shown, the device includes links one, two, three, four, five, and six, with five moving parts, four revolute joints, three prismatic joints, and a total of eight lower joints. The mechanism has 1 = 3 × 5 - 2 × 7 degrees of freedom. The driving link is a piston, which slides relative to the cylinder barrel, and its degrees of freedom are equal to the number of driving links. The six-bar mechanism of the brake belt device has definite relative motion. Even if links three and five move asynchronously, the entire mechanism will not jam. This overcomes the defects in the damping auxiliary braking device for a down-conveyor belt conveyor disclosed in patent number CN201920888736.5. The cylinder driving force can be amplified to multiply the braking force. The driving damping plate and the conveyor belt friction resistance are driven by the air pump. High-pressure gas is introduced into the cylinder barrel through the right air hole and pushes the piston at the rodless end of the cylinder barrel to complete the braking. The cylinder used in the device can also be replaced with a hydraulic cylinder as the power source. Its structure is simple, easy to operate, highly adaptable, has a low failure rate, and is easy to install, making it widely applicable in this technical field. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the six-bar linkage brake belt device of the present invention.

[0013] Figure 2 This is a schematic diagram of the "initial state" of the six-bar linkage brake belt device of the present invention.

[0014] Figure 3 This is a schematic diagram of the "braking state" of the six-bar linkage brake belt device of the present invention.

[0015] Figure 4 This is a schematic diagram of the guide device for the six-bar linkage brake belt device of the present invention.

[0016] Figure 5 This is a diagram showing the installation position of the six-bar linkage brake belt device of the present invention.

[0017] Figure 6 This is a simplified diagram illustrating the mechanical motion principle of the six-bar linkage brake belt device of the present invention.

[0018] In the diagram: 1. Six-bar linkage brake belt device; 2. Disc brake device; 3. Brake roller; 4. Upper idler roller device; 5. Belt conveyor frame; 6. Conveyor belt; 10. U-bolt assembly; 11. Base frame; 11-1. Outer plate of base frame; 11-2. Horizontal rectangular steel bar; 11-3. Central longitudinal groove steel block; 11-4. Slide rail fixing plate; 11-5. Side longitudinal groove steel block; 12. Sliding cylinder connecting rod device; 12-1. Rocker arm; 12-2. Rocker arm hinge seat; 12-3. Piston rod head; 12-4. Pneumatic cylinder connecting rod assembly. 12-4A, Cylinder piston rod; 12-5, Cylinder barrel; 12-5A, Cylinder barrel slide groove; 12-6A, Cylinder barrel left air hole; 12-6B, Cylinder barrel right air hole; 12-7, Slide rail; 12-8, Cylinder barrel limit bolt; 13, Guide device; 13-1, Guide cylinder; 13-2, Guide shaft; 14, Upper bracket; 14-1, Damping plate; 14-2, Damping base plate; 14-3, Fixing bolt; 14-4, Airfoil connecting plate; 14-5, Horizontal connecting plate; 14-6, Side connecting plate. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figures 1 to 4As shown, the six-bar linkage brake belt device of the present invention includes a base frame 11, a sliding cylinder connecting rod device 12, a guide device 13, and an upper support frame 14, which are disposed between the upper idler roller device 4 that supports the conveyor belt 6 on the belt conveyor frame 5. The base frame 11 includes a frame formed by two symmetrically arranged outer side plates 11-1 and horizontal rectangular steel bars 11-2, a single central longitudinal groove steel block 11-3 and a side longitudinal groove steel block 11-5, and a slide rail fixing plate 11-4. The two symmetrical outer side plates 11-1 are arranged on the left and right sides, and the two symmetrical horizontal rectangular steel bars 11-2 are symmetrically arranged front and back on the two outer side plates. Between 11-1; a single central longitudinal groove steel block 11-3 is located between the middle of two horizontal rectangular steel bars 11-2, and a single side longitudinal groove steel block 11-5 is located between the middle of two horizontal rectangular steel bars 11-2; the slide rail fixing plate 11-4 is fixedly connected to the upper part of the central longitudinal groove steel block 11-3 and the side longitudinal groove steel block 11-5; the lower part of the cylinder energy storage sliding device 12 is installed on the slide rail fixing plate 11-4 of the base frame 11, and the upper two sides are hinged to the upper bracket 14; the guide device 13 is located in the middle of the base frame 11 and the upper bracket 14; the outer end of the outer side plate 11-1 is provided with a U-bolt group 10 fixed on the belt conveyor frame 5. The base frame 11 provides stable support and guidance for the sliding cylinder connecting rod device 12 and the guide device 13. The horizontal rectangular steel bars 11-2 and the central longitudinal groove steel block 11-3 not only enhance the strength of the overall structure, but also ensure the stability of the device under stress. The entire six-bar linkage brake belt device 1 is mounted on the belt conveyor frame 5, located between the two upper idler roller devices 4 that support the conveyor belt 6. The outer side plate 11-1 of the base frame is a right-angled Z-shaped plate, and the inner end face of the outer side plate 11-1 of the base frame is provided with a triangular reinforcing rib plate.

[0020] The sliding cylinder connecting rod device 12 includes two rockers 12-1 (left and right), two rocker hinge seats 12-2 (left and right), a piston rod head 12-3, a cylinder piston 12-4, a cylinder piston rod 12-4A, a cylinder barrel 12-5, a cylinder barrel slide groove 12-5A, a cylinder barrel left air hole 12-6A, a cylinder barrel right air hole 12-6B, a slide rail 12-7, and a cylinder barrel limiting bolt 12-8. The cylinder piston 12-4 and the cylinder barrel 12-5 form an inlet and outlet sealed cavity, and the cylinder piston rod 12-4A of the cylinder piston 12-4 extends out of the cylinder barrel 12-5. The cylinder barrel 12-5 has a cylinder barrel left air hole 12-6A on the rod-side wall and a cylinder barrel right air hole 12-6B on the rodless side wall. -6B; The base of the cylinder barrel 12-5 is hinged to the right rocker arm 12-1. The cylinder barrel slide groove 12-5A of the cylinder barrel 12-5 is slidably installed with the slide rail 12-7. The slide rail 12-7 is installed on the slide rail fixing plate 11-4 of the base frame 11 by bolts. The cylinder piston rod 12-4A extending out of the cylinder barrel 12-5 is connected to the piston rod head 12-3. The piston rod head 12-3 is hinged to the left rocker arm 12-1. The left and right rocker arms 12-1 are respectively hinged to the left and right rocker arm hinge seats 12-2. The left and right rocker arm hinge seats 12-2 are installed on the bottom surfaces of the left and right sides of the upper bracket 14. The cylinder barrel limiting bolt 12-8 is installed on the fixed position of the slide rail 12-7. The cylinder barrel 12-5 of the cylinder energy storage sliding device 12 moves to the cylinder barrel limit screw 12-8 limit position, ensuring the reliable positioning of the entire braking mechanism and ensuring that the rocker arm 12-1 is fixed in the vertical position, thereby enhancing the stability and safety of the braking effect.

[0021] The guiding device 13 includes a guide cylinder 13-1 and a guide shaft 13-2. The guide cylinder 13-1 is fitted onto the guide shaft 13-2, and the lower end of the guide shaft 13-2 is fixed to the middle longitudinal channel steel block 11-3 of the base frame 11. The upper end of the guide cylinder 13-1 is fixed to the upper bracket 14. The guiding device 13 ensures the smoothness and straightness of the belt conveyor during operation. The cooperation between the guide cylinder 13-1 and the guide shaft 13-2 effectively reduces the lateral sway of the conveyor belt during operation. Simultaneously, the guide cylinder base 13-3 is securely mounted on the upper bracket 14, further improving the stability of the entire system.

[0022] The upper bracket 14 includes a damping plate 14-1, a damping base plate 14-2, fixing bolts 14-3, an airfoil connecting plate 14-4, a transverse connecting plate 14-5, and a side connecting plate 14-6. The damping plate 14-1 is divided into three parts: left, middle, and right. The cross-section of the damping plate 14-1 is airfoil-shaped. The three damping plates are respectively installed on the three damping base plates 14-2 by fixing bolts 14-3. The three damping base plates 14-2 are fixed together by two front and rear airfoil connecting plates 14-4. The two airfoil connecting plates 14-4 are fixed together by one transverse connecting plate 14-5 and two side connecting plates 14-6. The airfoil structure composed of three damping plates 14-1 not only provides sufficient damping force, but also allows the magnitude of the damping force to be adjusted by changing the tightness of the fixing bolts 14-3 according to actual needs. This enables the device to maintain an appropriate damping effect under different operating conditions, such as load or speed changes, thereby improving the safety and efficiency of the braking process. The airfoil connecting plate 14-4 and the transverse connecting plate 14-5 enhance the overall rigidity of the damping system, ensuring that all components work together and maintaining structural stability even under high load conditions.

[0023] Figure 6 The diagram shows a simplified schematic of the motion principle of a six-bar linkage brake belt device. The six-bar linkage constituting the brake belt device includes six links: link one, link two, link three, link four, link five, and link six. Link one is a fixed rod consisting of a frame 5, a slide rail 12-7, and a guide shaft 13-2. Link two is a moving link consisting of a cylinder barrel 12-5 and a slider 12-7. Link three is a rocker arm 12-1 on the right side. Link four is a moving link consisting of a cylinder piston 12-4 and a piston rod head 12-3. Link five is a rocker arm 12-1 on the left side. Link six is ​​a moving component consisting of an upper bracket 14 and a guide cylinder 13-1.

[0024] Figure 6 Middle: Cylinder driving force The driving force generated by the high-pressure gas generated by the gas source entering the sealed cavity formed between the cylinder barrel 12-5 of cylinder 2 and the piston 12-4 of cylinder 4 is the driving force generated by the gas source entering the gas-sealed cavity; The weight of the moving component consisting of the upper bracket 14 and guide cylinder 13-1 in member six, and the frictional resistance between the guide shaft 13-2 and guide cylinder 13-1 in the guiding device; the normal force of the damping plate. The supporting force between the moving component, consisting of the upper bracket 14 and the guide cylinder 13-1 in member six, and the conveyor belt 6 when it rises. The cylinder driving force... With damping plate normal force The relationship is as follows: As the cylinder piston 12-4 in rod four extends under the driving force of the cylinder, the included angle... As the angle increases, reaching its maximum at the vertical position, the normal pressure between the damping plate and the conveyor belt 6 gradually increases, and the resulting braking force gradually increases accordingly. The angle between member two and member three, and the angle between member four and member five.

[0025] The braking method of the six-bar linkage brake belt device of the present invention: like Figure 5 As shown, the six-bar linkage brake belt device 1 is mounted on the belt conveyor frame 5 between two adjacent upper idler roller devices 4, maximizing space utilization and effectively distributing the load to improve braking efficiency. It is fixed to the belt conveyor frame 5 by U-bolt sets 10, coordinating with the disc brake device 2, brake drum 3, upper idler roller device 4, belt conveyor frame 5, and conveyor belt 6 to ensure stability and reliability during operation.

[0026] When the belt conveyor is running normally, the control air pump introduces high-pressure gas into the rod-sealed chamber of cylinder 12-5 through the left air hole 12-6A of the cylinder, driving the cylinder piston 12-4 to retract. The right air hole 12-6B of the cylinder releases gas from the other side of the cylinder. The two rocker arms 12-1 rotate inward, causing the combination of guide cylinder 13-1 and upper bracket 14 to move down to the lower limit position. At this time, the conveyor belt 6 is disengaged from the damping plate 14-1 of the upper bracket 14, and no direct contact occurs. This avoids unnecessary frictional resistance of the damping plate 14-1 on the conveyor belt 6 in the non-braking state, thus ensuring the normal operation of the conveyor. When the belt conveyor brakes suddenly, the control air pump introduces high-pressure gas into the rodless sealing chamber of cylinder 12-5 through the right air hole 12-6B of the cylinder barrel. Gas is released from the other side of the cylinder through the left air hole 12-6A of the cylinder barrel, driving the cylinder piston 12-4 to extend. This then drives the second rocker arm 12-1 to rotate outward to the vertical direction. At this time, the cylinder barrel 12-5 of the cylinder energy storage sliding device 12 slides to the position of the cylinder barrel limit bolt 12-8. The guide cylinder 13-1 and the upper bracket 14 assembly rise accordingly, causing the damping plate 14-1 of the upper bracket 14 to come into contact with the conveyor belt 6 and generate braking force through friction. This ensures the braking safety of the belt conveyor and achieves deceleration or stopping of the belt conveyor, thus ensuring the braking safety of the belt conveyor.

[0027] When the belt conveyor requires braking, the six-bar linkage brake belt device 1 and the disc brake device 2 work together. The disc brake device 2 first acts on the brake drum 3 to generate braking force on the conveyor belt 6. At the same time, the six-bar linkage brake belt device 1 further provides additional resistance, increasing the braking effect. This improves the safety and controllability of braking, especially under heavy loads or emergencies, enabling a rapid response and effectively preventing the conveyor belt 6 from slipping uncontrollably due to excessive inertia, thus ensuring the safety of equipment and personnel.

Claims

1. A six-bar linkage brake belt device, characterized in that: The six-bar linkage brake belt device (1) includes a base frame (11), a sliding cylinder connecting rod device (12), a guide device (13), and an upper bracket (14) located between the upper idler roller device (4) that supports the conveyor belt (6) on the belt conveyor frame (5); the base frame (11) includes a frame formed by two symmetrically arranged outer side plates (11-1) and two symmetrical horizontal rectangular steel bars (11-2), a longitudinal groove steel block (11-3) is provided in the middle of the frame, and a side longitudinal groove steel block (11-5) is provided on one side of the longitudinal groove steel block (11-3) at intervals, and a slide rail fixing plate (11-4) is provided on the longitudinal groove steel block (11-3) and the side longitudinal groove steel block (11-5) at intervals; the two symmetrical outer side plates (11-1) are located on the left and right sides, and the two symmetrical horizontal rectangular steel bars (11-2) are located on the left and right sides. The two outer plates (11-1) are symmetrically arranged. The middle longitudinal channel steel block (11-3) is located between the middle of the two horizontal rectangular steel bars (11-2). The cylinder energy storage sliding device (12) is located on the slide rail fixing plate (11-4). The left and right ends of the cylinder energy storage sliding device (12) are connected to the bottom surfaces of the upper bracket (14) via rocker arms. The middle longitudinal channel steel block (11-3) is provided with guide devices (13) located on the front and rear sides of the cylinder energy storage sliding device (12). The upper bracket (14) is located on the guide devices (13). The top of the guide devices (13) is fixedly connected to the bottom surface of the middle part of the upper bracket (14). The outer ends of the outer plates (11-1) are respectively provided with U-bolt groups (10) fixed on the belt conveyor frame (5).

2. The six-bar linkage brake belt device according to claim 1, characterized in that: The outer side plate (11-1) of the base frame is a right-angled Z-shaped plate, and the inner end face of the outer side plate (11-1) of the base frame is provided with a triangular reinforcing rib plate.

3. The six-bar linkage brake belt device according to claim 1, characterized in that: The sliding cylinder connecting rod device (12) includes two rockers (12-1), two rocker hinge seats (12-2), a piston rod head (12-3), a cylinder piston (12-4), a cylinder piston rod (12-4A), a cylinder barrel (12-5), a cylinder barrel slide groove (12-5A), a cylinder barrel left air hole (12-6A), a cylinder barrel right air hole (12-6B), a slide rail (12-7), and a cylinder barrel limiting bolt (12-8). The cylinder piston (12-4) and the cylinder barrel (12-5) cooperate to form an inlet and outlet air hole sealing cavity, and the cylinder piston rod (12-4A) of the cylinder piston (12-4) extends out of the cylinder barrel (12-5). The cylinder barrel (12-5) has a cylinder barrel left air hole (12-6A) on the rod side of the cylinder wall and a cylinder barrel on the rodless side of the cylinder wall. Right air port (12-6B); the base rod head of the cylinder barrel (12-5) is hinged to the right rocker arm (12-1), the cylinder barrel slide groove (12-5A) of the cylinder barrel (12-5) is slidably installed with the slide rail (12-7), and the slide rail (12-7) is installed on the slide rail fixing plate (11-4) by bolts; the cylinder piston rod (12-4A) extending out of the cylinder barrel (12-5) is connected to the piston rod head (12-3), and the piston rod head (12-3) is hinged to the left rocker arm (12-1); the left and right rockers (12-1) are respectively hinged to the left and right rocker arm hinge seats (12-2), and the left and right rocker arm hinge seats (12-2) are respectively installed at the bottom of the upper bracket (14); the cylinder barrel limiting bolt (12-8) is installed on the fixed position of the slide rail (12-7).

4. The six-bar linkage brake belt device according to claim 1, characterized in that: The guiding device (13) includes a guide cylinder (13-1) and a guide shaft (13-2); the guide cylinder (13-1) is fitted on the guide shaft (13-2), the lower end of the guide shaft (13-2) is fixed to the middle longitudinal channel steel block (11-3) of the base frame (11), and the upper end of the guide cylinder (13-1) is fixed to the upper bracket (14).

5. The six-bar linkage brake belt device according to claim 1, characterized in that: The upper bracket (14) includes a damping plate (14-1), a damping base plate (14-2), a fixing bolt (14-3), an airfoil connecting plate (14-4), a transverse connecting plate (14-5), and a side connecting plate (14-6). The damping plate (14-1) is divided into three parts: left, middle, and right. The cross-section of the damping plate (14-1) is airfoil-shaped. The three damping plates are respectively installed on the three damping base plates (14-2) by fixing bolts (14-3). The three damping base plates (14-2) are fixed together by two front and rear airfoil connecting plates (14-4). The two airfoil connecting plates (14-4) are fixed together by one transverse connecting plate (14-5) and two side connecting plates (14-6).

6. The braking method of the six-bar linkage brake belt device according to any one of claims 1-5, characterized in that: The six-bar mechanism brake belt device (1) is installed on the belt conveyor frame (5) between two adjacent upper roller devices (4) and fixed to the belt conveyor frame (5) by a U-bolt group (10); When the belt conveyor is running normally, the control air pump introduces high-pressure gas into the cylinder barrel (12-5) through the left air hole (12-6A) and enters the rod-sealed cavity side of the cylinder barrel (12-5), driving the cylinder piston (12-4) to retract. The right air hole (12-6B) of the cylinder barrel releases gas from the other side of the cylinder. The two rocker arms (12-1) rotate inward, causing the combination of the guide cylinder (13-1) and the upper bracket (14) to move down to the lower limit position. At this time, the conveyor belt (6) disengages from the damping plate (14-1) of the upper bracket (14). When the belt conveyor brakes in an emergency, the control air pump introduces high-pressure gas into the rodless sealing chamber of the cylinder barrel (12-5) through the right air hole (12-6B) of the cylinder barrel, and the left air hole (12-6A) of the cylinder barrel releases gas from the other side of the cylinder, driving the cylinder piston (12-4) to extend, and then driving the two rockers (12-1) to rotate outward to the vertical direction; at this time, the cylinder barrel (12-5) of the cylinder energy storage sliding device (12) slides to the position of the cylinder barrel limit bolt (12-8), and the guide cylinder (13-1) and the upper bracket (14) assembly rise accordingly, so that the damping plate (14-1) of the upper bracket (14) comes into contact with the conveyor belt (6) to generate braking force through friction, thereby ensuring the braking safety of the belt conveyor.

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