Dismounting device for backstop of belt conveyor

Abstract

The dismounting device comprises a supporting base provided with a hydraulic lifting device, the movable end of the hydraulic lifting device is connected with a fixing block, the right side of the fixing block is connected with a bidirectional servo motor, the left side of the fixing block is connected with a push head rod, and the front side and the rear side of the fixing block are connected with sliding rails correspondingly; the output ends of the front side and the rear side of the bidirectional servo motor are connected with ball screws correspondingly, the ball screws are in threaded connection with ball nut fixing pieces correspondingly, guide sliding blocks are slidably connected to the sliding rails correspondingly, and the two sides of each guide sliding block are fixedly connected with the fixing end of the corresponding electric control hydraulic push rod and the corresponding ball nut fixing piece correspondingly. Clamping plates are fixedly connected to the movable ends of the electric control hydraulic push rods, arc-shaped grooves opposite in position are formed in the inner sides of the two clamping plates, the two clamping plates are connected through two reinforcing assemblies, and each reinforcing assembly comprises a steel bolt, an inserting cylinder, a pull ring and a sliding adjusting cylinder. The position of the backstop is accurately positioned, damage to the backstop dismounting device and the backstop is reduced, and the applicability of the backstop dismounting device is improved.

Description

Technical Field

[0001] The invention relates to a disassembly device for a backstop of a belt conveyor, and belongs to the technical field of disassembly and assembly of backstops of belt conveyors. Background Art

[0002] The backstop in the belt conveyor of a thermal power plant is a key safety protection device. Its core function is to prevent the belt from reversing or sliding during shutdown or sudden failure. The backstop can quickly prevent the belt from running in the opposite direction due to the gravity of the material, avoiding material accumulation, equipment damage and even safety accidents. Therefore, when the backstop fails, it needs to be disassembled and repaired in time to avoid affecting production safety.

[0003] The existing disassembly of check valves mostly relies on manual labor or pullers, which have obvious shortcomings: during manual operation, the force application point and strength must be judged based on experience, and there is a lack of precise guidance, which is prone to positioning deviation and uneven force application. Uneven force application will impact the precision bearings in the check valve, causing wear of the check valve raceway and breakage of the balls; the puller has a fixed claw size, which is difficult to adapt to check valves of different specifications. It is easy to "falsely clamp" when clamping, and slippage during force application may cause a hard collision between the check valve and the conveyor shaft, scratching the shaft surface or damaging the surrounding frames, and the disassembly time is long. Summary of the Invention

[0004] The object of the present invention is to provide a belt conveyor backstop disassembly device to solve the problems raised in the above background technology.

[0005] The technical solutions of the present invention are as follows: A belt conveyor backstop removal device includes a support base provided with a hydraulic lifting device, a movable end of the hydraulic lifting device is connected to a fixed block, a right side of the fixed block is connected to a bidirectional servo motor, a left side is connected to a push rod, and a front and rear side are respectively connected to a slide rail; The front and rear output ends of the bidirectional servo motor are respectively connected to ball screws, which are threaded with ball nut fasteners. The guide slides are slidably connected to the slide rails, and the two sides of the guide slides are respectively fixed to the fixed ends of the electric-controlled hydraulic push rods and the ball nut fasteners. The movable ends of the electric-controlled hydraulic push rods are fixed with card plates. The inner sides of the two card plates are provided with arc grooves in opposite positions and are connected by two sets of reinforcement components. The reinforcement components include a plug-in cylinder fixed on one card plate and a sliding connection cylinder fixed on the other card plate. The rigid bolt is slidably connected to the sliding connection cylinder. One end of the rigid bolt can be inserted into the plug-in cylinder, and the other end of the rigid bolt is provided with a pull ring.

[0006] Furthermore, a controller is provided on the top of the fixed block, and a display screen and operation buttons are provided on the controller.

[0007] Furthermore, pressure sensors are provided on the movable end of the electric-controlled hydraulic push rod and the card plate, and the signal output end of each pressure sensor is electrically connected to the signal input end of the controller.

[0008] Furthermore, the hydraulic lifting device includes a hydraulic cylinder and a support rod. The hydraulic cylinder is installed on the upper surface of the support seat. One end of the lifting rod is connected to the output end of the hydraulic cylinder, and the other end is fixedly connected to the fixed block.

[0009] Furthermore, the slide rail is an I-shaped steel solid slide rail, and limit blocks are provided at both ends of the slide rail.

[0010] Furthermore, the ball screw and the bidirectional servo motor are connected via a coupling, and a reinforcing rib is provided at the connection between the ball screw and the coupling.

[0011] Furthermore, the inner walls of the sliding adjustment cylinder and the plug-in cylinder are both provided with a self-lubricating wear-resistant coating, and the coating is composited by polytetrafluoroethylene and molybdenum disulfide.

[0012] Furthermore, both the upper and lower sides of the rigid bolt are provided with limiting guide pieces that slide in cooperation with the inner wall of the sliding adjustment cylinder.

[0013] The present invention has the following beneficial effects: 1. The height of the backstop removal device is adjusted by controlling the hydraulic lifting device through the controller. The ball screw is driven by the bidirectional servo motor, thereby driving the electric hydraulic cylinder to move horizontally, and the clamping plate is moved to the position corresponding to the backstop, thereby achieving precise control of the clamping plate position. The backstop body is disassembled by the pulling force of the clamping plate and the thrust of the push rod. The backstop body is disassembled quickly and accurately, which greatly improves the efficiency of the backstop removal work and reduces the time and labor cost of manual removal.

[0014] 2. By setting the clamping plate and the reinforcement component, the reinforcement component further strengthens the connection between the clamping plate. When the backstop body is removed, the two clamping plates can synchronously and stably apply force to the backstop body, effectively preventing the clamping plate and the backstop from bending and deforming due to uneven force, thereby reducing damage to the backstop and the clamping plate. 3. Through the cooperation between the electric-controlled hydraulic rod and the clamping plate, it can adapt to various sizes of backstop bodies. At the same time, relatively positioned arc grooves are provided on the inner side of the clamping plate to enable the clamping plate to match various sizes of belt conveyor shafts, thereby improving the applicability of the backstop removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the disassembly process of the present invention; Figure 3 It is a right side sectional view of the structure of the present invention; Figure 4 Schematic diagram of the ball screw, ball nut fixture and electronically controlled hydraulic push rod of the present invention; Figure 5 is a cross-sectional view of the reinforcement assembly of the present invention; Figure 6 It is a schematic diagram of the backstop body of the present invention.

[0016] The reference numerals in the figures are as follows: 1. Support seat; 2. Hydraulic lifting device; 3. Fixed block; 4. Driving mechanism; 401. Bidirectional servo motor; 402. Slide rail; 403. Coupling; 404. Ball screw; 405. Ball nut fastener; 406. Guide slider; 407. Electric hydraulic push rod; 5. Backstop clamping mechanism; 501. Clamping plate; 502. Reinforcement assembly; 5021. Sliding adjustment cylinder; 5022. Plug cylinder; 5023. Rigid bolt; 5024. Limiting guide plate; 5025. Pull ring; 6. Push head rod; 7. Controller; 8. Belt conveyor shaft; 9. Backstop body; 10. Auxiliary fixing ring. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figures 1 to 6 As shown, a belt conveyor backstop disassembly device includes: The support base 1 is provided with a hydraulic lifting device 2, which includes a hydraulic cylinder and a lifting rod. The hydraulic cylinder is installed on the upper surface of the support base 1, one end of the lifting rod is connected to the output end of the hydraulic cylinder, and the other end is fixedly connected to the fixed block 3.

[0019] The driving mechanism 4 is arranged on the fixed block 3 and includes a bidirectional servo motor 401, a slide rail 402, a coupling 403, a ball screw 404, a ball nut fastener 405, a guide slider 406 and an electronically controlled hydraulic push rod 407. The bidirectional servo motor 401 is fixedly installed on the right side of the fixed block 3 through a bracket (not shown in the figure). The two output ends of the bidirectional servo motor 401 are respectively connected to a ball screw 404 through a coupling 403. A reinforcing rib (not shown in the figure) is provided at the connection between the ball screw 404 and the coupling 403. The reinforcing rib is used to enhance the strength of the connection between the ball screw 404 and the coupling 403 to prevent damage during the transmission process. 4 outer walls are threadedly connected with ball nut fixtures 405; the slide rail 402 is an I-shaped steel fixed slide rail, and the slide rails 402 are fixedly connected to the front and rear sides of the fixed block 3. Guide sliders 406 are slidably connected to the two slide rails 402. Limit blocks (not shown in the figure) are provided at both ends of the slide rails 402 to limit the sliding range of the guide sliders 406 and prevent the guide sliders 406 from falling off the slide rails 402; the two ball nut fixtures 405 are fixedly connected to the corresponding guide sliders 406 on the side away from the ball screw 404, and the guide sliders 406 are fixedly connected to the side away from the ball nut fixtures 405. The electric-controlled hydraulic push rods 407 are provided with pressure sensors.

[0020] The backstop holding mechanism 5 includes two card plates 501 and two groups of reinforcement components 502 for connecting the card plates 501. The two card plates 501 are fixedly connected to the corresponding electric-controlled hydraulic push rods 407. The inner sides of the two card plates 501 are provided with arc grooves in opposite positions. Both card plates 501 are provided with pressure sensors. The reinforcement components 502 include a rigid bolt 5023, a plug-in cylinder 5022, a sliding adjustment cylinder 5021, a limiting guide piece 5024 and a pull ring 5025. The plug-in cylinders 5022 of the two groups of reinforcement components 502 are fixed to one of the card plates 501, and the sliding adjustment cylinders 5021 of the two groups of reinforcement components 502 are fixed to On the other clamping plate 501, the rigid bolt 5023 is slidably connected to the sliding adjustment cylinder 5021. A pull ring 5025 is provided on one side of the rigid bolt 5023. The pull ring 5025 is used to facilitate the operator to perform installation and adjustment operations. The other side of the rigid bolt 5023 can be inserted into the plug-in cylinder 5022. The upper and lower sides of the rigid bolt 5023 are provided with limiting guide plates 5024 that slide with the inner wall of the sliding adjustment cylinder 5021. The inner walls of the sliding adjustment cylinder 5021 and the plug-in cylinder 5022 are both provided with a self-lubricating wear-resistant coating. The coating is composed of a composite of polytetrafluoroethylene and molybdenum disulfide. The self-lubricating wear-resistant coating is used to reduce the friction resistance and wear of the sliding parts.

[0021] The push head rod 6 is fixed to the left side of the fixed block 3. The push head rod 6 is a telescopic structure. The fixed end is fixed to the left side of the fixed block. The telescopic end is used to push the belt conveyor shaft 8 to assist in the disassembly of the backstop body 9. The push head rod 6 is made of high-strength alloy steel.

[0022] The controller 7 is arranged on the top of the fixed block 3 and is electrically connected to the electronic components of the present invention through wires. The signal output ends of the pressure sensors on the electronically controlled hydraulic push rod 407 and the clamping plate 501 are electrically connected to the signal input ends of the controller 7. The pressure sensor is used to monitor the clamping force in real time and cooperate with the controller 7 to achieve closed-loop control. The controller 7 is provided with a display screen and operation buttons, wherein the display screen can display the operating parameters of the driving mechanism 4 and the hydraulic lifting device 2, and the operation buttons are used to control the start, stop and operation status adjustment of each component.

[0023] An auxiliary fixing ring 10 may be provided above the disassembled check valve body 9 of the present invention. The auxiliary fixing ring 10 is used to assist in fixing the check valve body 9 through a steel cable and other equipment, thereby further enhancing the stability of the check valve disassembly device during the disassembly of the check valve body 9.

[0024] Workflow: During the disassembly process, the backstop body 9 is separated from the belt conveyor shaft 8 to achieve disassembly of the backstop body 9. The specific steps are as follows: (1) Move the backstop removal device to a suitable position next to the belt conveyor, operate the hydraulic lifting device 2 and the driving mechanism 4 through the controller 7, and adjust the backstop holding mechanism 5 to a position that is highly adapted to the backstop body 9; (2) Start the bidirectional servo motor 401, which drives the ball screw 404 to rotate through the coupling 403, so that the ball nut 405 moves along the slide rail 402 with the cooperation of the guide slider 406, and then drives the electric hydraulic push rod 407 and the clamping plate 501 to approach the backstop body 9 until the arc groove on the inner side of the clamping plate 501 corresponds to the belt conveyor shaft 8 and does not contact. At this time, the clamping plate 501 contacts the backstop body 9 and initially clamps it; (3) Adjust the position of the rigid bolt 5023. The limiting guide piece 5024 controls the moving distance of the rigid bolt 5023 in the sliding adjustment cylinder 5021. Adjust the rigid bolt 5023 to a suitable position and insert it into the plug-in cylinder 5022. The sliding adjustment cylinder 5021 and the plug-in cylinder 5022 are fixed by the rigid bolt 5023, so that the clamping plate 501 is firmly connected. (4) Observing the operating parameters of the driving mechanism 4 through the controller 7, and controlling the backstop holding mechanism 5 to hold the backstop body 9; (5) The controller 7 controls the driving mechanism 4 to run in the reverse direction, driving the check valve clamping mechanism 5 to pull the check valve body 9, and at the same time aligning the telescopic end of the push rod 6 with the belt conveyor shaft 8 to apply a thrust. Under the combined action of the pulling force and the pushing force, the check valve body 9 is removed from the belt conveyor shaft 8. After the disassembly is completed, the plate surface connection reinforcement component 502 is loosened to separate the clamping plate 501 from the check valve body 9. The push rod 6 assists in clamping the check valve body 9, and then the equipment position is adjusted by the hydraulic lifting device 2 to complete the disassembly.

[0025] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A belt conveyor backstop removal device, characterized by: It includes a support seat provided with a hydraulic lifting device, the movable end of the hydraulic lifting device is connected to a fixed block, the right side of the fixed block is connected to a bidirectional servo motor, the left side is connected to a push head rod, and the front and rear sides are respectively connected to slide rails; the front and rear output ends of the bidirectional servo motor are respectively connected to ball screws, the ball screws are threaded with ball nut firmware, and the slide rails are slidably connected to guide sliders, and the two sides of the guide sliders are respectively fixed to the fixed end of the electric-controlled hydraulic push rod and the ball nut firmware; the movable ends of the electric-controlled hydraulic push rods are fixed to card plates, and arc grooves with opposite positions are opened on the inner sides of the two card plates, and are connected by two sets of reinforcement components, the reinforcement components include a plug-in cylinder fixed on one card plate and a sliding connecting cylinder fixed on the other card plate, the rigid bolt is slidably connected to the sliding connecting cylinder, one end of the rigid bolt can be plugged into the plug-in cylinder, and the other end of the rigid bolt is provided with a pull ring.

2. A belt conveyor backstop removal device according to claim 1, characterized in that: A controller is provided on the top of the fixing block, and a display screen and operation buttons are provided on the controller.

3. A belt conveyor backstop removal device according to claim 2, characterized in that: Pressure sensors are provided on the movable end of the electric-controlled hydraulic push rod and the card plate, and the signal output end of each pressure sensor is electrically connected to the signal input end of the controller.

4. A belt conveyor backstop removal device according to claim 1, characterized in that: The hydraulic lifting device includes a hydraulic cylinder and a support rod. The hydraulic cylinder is installed on the upper surface of the support seat. One end of the lifting rod is connected to the output end of the hydraulic cylinder, and the other end is fixedly connected to the fixed block.

5. The belt conveyor backstop disassembly device according to claim 1, characterized in that: The slide rail is an I-shaped steel solid slide rail, and limit blocks are provided at both ends of the slide rail.

6. A belt conveyor backstop removal device according to claim 1, characterized in that: The ball screw and the bidirectional servo motor are connected via a coupling, and a reinforcing rib is provided at the connection between the ball screw and the coupling.

7. A belt conveyor backstop removal device according to claim 1, characterized in that: The inner walls of the sliding adjustment cylinder and the plug-in cylinder are both provided with a self-lubricating wear-resistant coating, and the coating is composited by polytetrafluoroethylene and molybdenum disulfide.

8. The belt conveyor backstop disassembly device according to claim 1, characterized in that: The upper and lower sides of the rigid bolt are both provided with limiting guide pieces which are slidably matched with the inner wall of the sliding adjustment cylinder.

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