Belt conveyor head telescopic device

Abstract

The utility model discloses a belt conveyor head telescopic device which comprises a fixed beam and a movable beam, the fixed beam is fixedly arranged on a fixed frame, the movable beam is movably arranged on the fixed frame, and the fixed beam and the movable beam are arranged in an end-to-end mode. The movable beam is connected to the fixed beam through a telescopic mechanism, and the movable beam reciprocates under the action of the power piece. The head telescopic device of the belt conveyor can be switched to operate among different stations, the length of the belt conveyor is reduced, and the overall structure is simple.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mining equipment, and in particular relates to a telescopic device for the head of a belt conveyor. Background Technology

[0002] Currently used telescopic structures employ a drive mechanism that provides telescopic power via a motor, high-speed shaft coupling, reducer, and low-speed shaft coupling. The traveling mechanism uses a gear and rack combination, and the moving idler roller assembly uses a short chain connection.

[0003] This drive system, consisting of a motor, high-speed shaft coupling, reducer, and low-speed shaft coupling, has a relatively dispersed structure, composed of multiple independent components. Installation requires separate positioning and installation of the motor, coupling, and reducer, demanding significant space and precision. Improper installation of any component can affect overall performance. While the coupling can compensate for misalignment, displacement, and vibration between the two shafts to some extent, improper selection or installation may lead to increased vibration and noise. The numerous connections between components may result in some energy loss during transmission, leading to relatively lower transmission efficiency. Although the independent nature of each component makes it easy to identify the faulty part, it requires individual inspection and maintenance, resulting in a substantial workload. Repair may require disassembling multiple components, making repairs relatively difficult and time-consuming.

[0004] The traveling mechanism of the moving beam employs a gear and rack combination. The gear and rack teeth require high precision machining, placing stringent demands on machining equipment, processes, and cutting tools, resulting in high manufacturing costs due to the complexity of the process. During installation, parameters such as gear and rack meshing clearance, parallelism, and perpendicularity must be within strict tolerances; otherwise, transmission accuracy and stability will be affected, and wear will be accelerated. The installation process is complex and requires specialized technology and equipment. Maintenance and replacement of the gear and rack require professional personnel and involve complex tasks such as disassembly, installation, and adjustment. Furthermore, the gear and rack operate under high load and high friction, requiring regular inspection, lubrication, adjustment, and replacement of wear parts, leading to high maintenance costs and workload. The gear and rack system is unsuitable for long-distance transmission. In long-distance transmission, the gear and rack system becomes more complex, increases costs, and reduces transmission efficiency due to the increased number of intermediate links.

[0005] The mobile idler assembly uses a short chain connection method. Due to the influence of external environmental factors such as moving speed, vibration, and collision, the center of gravity of the mobile idler assembly is unstable during movement, which can easily cause it to tip over, increase maintenance costs, and create safety hazards. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a belt conveyor head telescopic device. The belt conveyor head telescopic device of this utility model can switch between different work positions, reduce the length of the belt conveyor, and has a simple overall structure.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0008] A belt conveyor head telescopic device includes a fixed beam and a movable beam. The fixed beam is fixedly mounted on a fixed frame, and the movable beam is movably mounted on the fixed frame. The fixed beam and the movable beam are arranged end to end. The movable beam is connected to the fixed beam through a telescopic mechanism, and the movable beam reciprocates under the action of a power component.

[0009] Furthermore, the telescopic mechanism includes N movable roller assemblies and N+1 connecting rod assemblies. The N movable roller assemblies and the N+1 connecting rod assemblies are arranged alternately along the direction of movement of the movable beam. The connecting rod assembly at the rear end is defined as connecting rod assembly A, and the connecting rod assembly at the front end is defined as connecting rod assembly B. The fixed beam is connected to the adjacent movable roller assembly through connecting rod assembly A, two adjacent movable roller assemblies are connected through connecting rod assembly B, and the movable beam is connected to the adjacent movable roller assembly through connecting rod assembly B.

[0010] Furthermore, the connecting rod assembly A includes connecting rod A1, connecting rod A2, connecting rod A3, and connecting rod A4, which are sequentially hinged together. Connecting rod A1 and connecting rod A4 are simultaneously hinged to the roller assembly, and connecting rod A2 and connecting rod A3 are simultaneously hinged to the fixed beam.

[0011] Furthermore, the connecting rod assembly B includes connecting rod B1, connecting rod B2, connecting rod B3, and connecting rod B4 that are hinged sequentially. Connecting rod B1 and connecting rod B4 are simultaneously hinged to the moving beam, and connecting rod B2 and connecting rod B3 are simultaneously hinged to the idler roller assembly.

[0012] Furthermore, the two ends of the movable beam are respectively provided with a driving wheel assembly and a driven wheel assembly. The driving wheel assembly includes a driving wheel, and the driven wheel assembly includes a driven wheel. The power component is a three-in-one geared motor, which drives the driving wheel to roll.

[0013] Furthermore, a front guide rail and a rear guide rail are fixedly mounted on the fixed frame, the driving wheel is rotatably mounted on the front guide rail, and the driven wheel is rotatably mounted on the rear guide rail.

[0014] Furthermore, a rail clamp is provided on the front guide rail.

[0015] Furthermore, a movable redirecting roller is provided at the rear end of the movable beam, and an unloading roller and a funnel are provided at the front end of the movable beam, with the unloading roller located inside the funnel.

[0016] Furthermore, a front buffer block is provided at the front end of the moving beam, and a rear buffer block is provided at the rear end of the moving beam.

[0017] Furthermore, a front stop is provided on the fixed frame, the front stop is located in front of the moving beam, and a rear stop is provided at the rear end of the rear guide rail.

[0018] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] The conveyor head telescopic device includes a fixed beam and a movable beam. The fixed beam is fixedly mounted on a fixed frame, and the movable beam is movably mounted on the fixed frame. The fixed beam and the movable beam are positioned end-to-end. The movable beam is connected to the fixed beam via a telescopic mechanism, and the movable beam reciprocates under the action of a power component. This conveyor head telescopic device can switch between different work positions, reducing the length of the conveyor belt, and has a simple overall structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the belt conveyor head telescopic device of this utility model;

[0021] Figure 2 yes Figure 1 A magnified view of a portion of region A in the middle;

[0022] Figure 3 yes Figure 1 A magnified view of a portion of region B in the middle;

[0023] Figure 4 yes Figure 1 A magnified view of a portion of region C in the middle;

[0024] In the diagram, 1. Funnel; 2. Sweeper; 3. Telescopic mechanism; 31. Moving roller; 32. Connecting bracket; 33. Connecting rod assembly A; 331. Connecting rod A-1; 332. Connecting rod A-2; 333. Connecting rod A-3; 334. Connecting rod A-4; 34. Connecting rod assembly B; 341. Connecting rod B-1; 342. Connecting rod B-2; 343. Connecting rod B-3; 344. Connecting rod B-4; 35. Connecting rod... 1. Connecting rod assembly; 2. Upper idler roller; 3. Lower idler roller; 4. Moving beam; 5. Fixed redirecting roller; 6. Moving redirecting roller; 7. Fixed beam; 8. Unloading roller; 9. Front stop; 10. Rear stop; 11. Rear guide rail; 12. Rear buffer block; 13. Driven wheel assembly; 14. Front guide rail; 15. Drive wheel assembly; 16. Three-in-one geared motor; 17. Rail clamp; 28. Front buffer block; 29. ​​Belt. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Combination Figure 1 , Figure 2 , Figure 3 ,as well as Figure 4 As shown, a conveyor belt head telescopic device includes a fixed beam 9 and a movable beam 6. The fixed beam 9 is fixedly mounted on a fixed frame (not shown in the figure), and the movable beam 6 is movably mounted on the fixed frame. The fixed beam 9 and the movable beam 6 are positioned end-to-end. The movable beam 6 is connected to the fixed beam 9 via a telescopic mechanism 3, and the movable beam 6 reciprocates under the action of a power component.

[0027] Preferably, the telescopic mechanism 3 includes N movable roller assemblies and N+1 connecting rod assemblies 35, with the N movable roller assemblies and N+1 connecting rod assemblies 35 arranged alternately along the direction of movement of the movable beam 6. The last connecting rod assembly is defined as connecting rod assembly A 33, and the first connecting rod assembly is defined as connecting rod assembly B 34. The fixed beam 9 is connected to adjacent movable roller assemblies via connecting rod assembly A 33, two adjacent movable roller assemblies are connected via connecting rod assembly 35, and the movable beam 6 is connected to adjacent movable roller assemblies via connecting rod assembly B 34.

[0028] The connecting rod assembly A 33, connecting rod assembly B 34, and other connecting rod assemblies 35 have the same structure.

[0029] Preferably, the connecting rod assembly A 33 includes connecting rods A-331, A-332, A-333, and A-434 that are hinged together in sequence. Connecting rods A-331 and A-434 are simultaneously hinged to the roller assembly, and connecting rods A-332 and A-333 are simultaneously hinged to the fixed beam 9.

[0030] Preferably, the connecting rod assembly B 34 includes connecting rods B-1 341, B-2 342, B-3 343, and B-4 344 that are hinged sequentially. Connecting rods B-1 341 and B-4 344 are simultaneously hinged to the moving beam 6, and connecting rods B-2 342 and B-3 343 are simultaneously hinged to the idler roller assembly.

[0031] More preferably, the idler assembly includes a movable idler 31, on which a connecting bracket 32 ​​is provided, and connecting rod A-331 and connecting rod A-434, and connecting rod B-341 and connecting rod B-4344 are simultaneously hinged to the corresponding connecting bracket 32.

[0032] Preferably, a driving wheel assembly 17 and a driven wheel assembly 15 are respectively provided at both ends of the moving beam 6. The driving wheel assembly 17 includes a driving wheel, and the driven wheel assembly 15 includes a driven wheel. The power component is a three-in-one geared motor 18, which drives the driving wheel to roll. The structures of the driving wheel assembly 17, the driven wheel assembly 15, and the three-in-one geared motor 18 are common knowledge. The mounting of the driving wheel assembly 17 and the driven wheel assembly 15 on the moving beam 6 is also common knowledge. The driving of the driving wheel by the three-in-one geared motor 18 is also common knowledge.

[0033] In this invention, the power component is a three-in-one geared motor 18. The three-in-one geared motor 18 integrates the motor and reducer into one compact structure, small size, and minimal space occupation. Installation is simple and quick, requiring only overall fixing to the equipment, effectively saving installation time and labor costs, allowing this invention to be used in spaces with limited installation space. Due to its integrated design, the three-in-one geared motor 18 has a compact internal structure and more precise coordination between transmission components, resulting in generally lower vibration and noise during operation. It also boasts high overall transmission efficiency, effectively reducing energy loss. Maintenance requires only an overall inspection, reducing the workload of inspection and maintenance. The power of the three-in-one geared motor 18 can be selected according to the number of telescopic workstations, solving the technical challenges of high-capacity, long-distance, multi-workstation operation.

[0034] Preferably, a front guide rail 16 and a rear guide rail 13 are fixedly mounted on a fixed frame, with the driving wheel rolling on the front guide rail 16 and the driven wheel rolling on the rear guide rail 13.

[0035] Preferably, a rail clamp 19 is provided on the front guide rail 16. The structure and installation method of the rail clamp 19 are common knowledge to those skilled in the art and will not be described in detail here. The rail clamp 19 on the front guide rail 16 can clamp the front guide rail 16 and fix the moving beam 6, which can prevent the conveyor head telescopic device of this utility model from slipping and tipping over, making parking safer and more stable, and improving the use effect.

[0036] Preferably, a moving redirecting roller 8 is provided at the rear end of the moving beam 6, and an unloading roller 10 and a funnel 1 are provided at the front end of the moving beam 6, with the unloading roller 10 located inside the funnel 1.

[0037] More preferably, a fixed redirecting roller 7 is provided on the fixed frame.

[0038] Preferably, a front buffer block 20 is provided at the front end of the moving beam 6, and a rear buffer block 14 is provided at the rear end of the moving beam 6. A front stop 11 is provided on the fixed frame, located in front of the moving beam 6, and a rear stop 12 is provided on the rear guide rail 13, located at the rear end of the rear guide rail 13. After the conveyor head telescopic device of this utility model has completed its movement, when the rear buffer block 14 and the front buffer block 20 collide with the rear stop 12 and the front stop 11 respectively, the impact force on the conveyor head telescopic device of this utility model after the movement is completed can be reduced, and the structural stability of the conveyor head telescopic device of this utility model can be improved.

[0039] The movable beam 6 and the fixed beam 9 are connected to each other by the telescopic mechanism 3. The telescopic mechanism 3 is composed of multiple parallelogram-shaped connecting rod assemblies 35 connected by hinges. By changing the angle and side length of the parallelograms, the movement of the movable roller assembly is more flexible, making the belt conveyor head telescopic device of this utility model more stable and safe during operation.

[0040] Preferably, cleaners 2 can be detachably installed on both sides of the movable beam 6. During the movement of the conveyor head telescopic device of this invention, they can remove materials and other impurities, ensuring that the conveyor head telescopic device maintains minimal resistance when moving forward, and ensuring that the conveyor head telescopic device can move safely and stably, thus improving the safety and stability of the movement. The structure, working principle, and working process of the cleaner 2 are common knowledge to those skilled in the art, and will not be described in detail here.

[0041] An upper idler roller 4 and a lower idler roller 5 are provided on the moving beam 6. The belt 21 passes over the upper idler roller 4, the unloading roller 10, the lower idler roller 5, the moving redirecting roller 8, and the fixed redirecting roller 7. The above arrangement of the belt 21 is common knowledge to those skilled in the art and will not be described in detail here.

[0042] By moving the moving beam 6 back and forth, the funnel 1 is switched between different workstations, so that the material in the funnel 1 falls into different places.

[0043] The technical features with serial numbers mentioned in this manual (such as connecting rod assembly A, connecting rod A-1, connecting rod A-2, connecting rod A-3, connecting rod A-4, connecting rod assembly B, connecting rod B-1, connecting rod B-2, connecting rod B-3, connecting rod B-4, etc.) are only for distinguishing the technical features and do not represent the positional relationship, installation sequence, or working sequence of the technical features.

[0044] In the description of this specification, it should be understood that the orientation or positional relationship described by "upper roller", "lower roller", "front stop", "rear stop", "rear guide rail", "rear buffer block", "front guide rail", "front buffer block", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to 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.

Claims

1. A belt head retraction device, characterized in that, The fixed beam is fixedly arranged on a fixed frame, and the movable beam is movably arranged on the fixed frame, and the fixed beam and the movable beam are arranged end to end.

2. The belt conveyor head pulley retraction device of claim 1, wherein, The telescopic mechanism comprises N movable roller assemblies and N+1 connecting rod assemblies, the N movable roller assemblies and the N+1 connecting rod assemblies are alternately arranged along the moving direction of the movable beam, the connecting rod assembly at the last end is defined as connecting rod assembly A, and the connecting rod assembly at the front end is defined as connecting rod assembly B, the fixed beam and the adjacent movable roller assembly are connected by the connecting rod assembly A, the two adjacent movable roller assemblies are connected by the connecting rod assembly, and the movable beam and the adjacent movable roller assembly are connected by the connecting rod assembly B.

3. The belt conveyor head pulley retraction device of claim 2, wherein, The connecting rod assembly A comprises connecting rod A1, connecting rod A2, connecting rod A3 and connecting rod A4 which are sequentially hinged together, the connecting rod A1 and the connecting rod A4 are hinged to the roller assembly at the same time, and the connecting rod A2 and the connecting rod A3 are hinged to the fixed beam at the same time.

4. The belt conveyor head pulley retraction device of claim 3, wherein, The connecting rod assembly B comprises connecting rod B1, connecting rod B2, connecting rod B3 and connecting rod B4 which are sequentially hinged together, the connecting rod B1 and the connecting rod B4 are hinged to the movable beam at the same time, and the connecting rod B2 and the connecting rod B3 are hinged to the roller assembly at the same time.

5. The belt conveyor head pulley retraction device of claim 1, wherein, Both ends of the movable beam are respectively provided with a driving wheel assembly and a driven wheel assembly, the driving wheel assembly comprises a driving wheel, and the driven wheel assembly comprises a driven wheel; the power member is a three-in-one speed reduction motor, and the three-in-one speed reduction motor drives the driving wheel to roll.

6. The belt conveyor head pulley retraction device of claim 5, wherein, The fixed frame is fixedly provided with a front guide rail and a rear guide rail, the driving wheel is arranged on the front guide rail in a rolling manner, and the driven wheel is arranged on the rear guide rail in a rolling manner.

7. The belt conveyor head pulley retraction device of claim 6, wherein, The front guide rail is provided with a rail clamping device.

8. The belt conveyor head pulley retraction device of claim 1, wherein, The rear end of the movable beam is provided with a movable redirection cylinder, the front end of the movable beam is provided with an unloading cylinder and a hopper, and the unloading cylinder is located in the hopper.

9. The belt conveyor head pulley retraction device of claim 1, wherein, A front buffer block is arranged at the front end of the movable beam, and a rear buffer block is arranged at the rear end of the movable beam.

10. The belt conveyor head pulley retraction device of claim 6, wherein, A front stop seat is arranged on the fixed frame and located in front of the movable beam, and a rear stop seat is arranged at the rear end of the rear guide rail.

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