Flexible bucket wheel reclaimer jib

Abstract

The utility model relates to the technical field of flexible bucket wheel reclaimer cantilever, disclose a kind of flexible bucket wheel reclaimer cantilever, the cantilever body output end is equipped with bucket wheel reclaimer, the cantilever body inside is equipped with conveying belt mechanism, and the cantilever body is equipped with tension cable, the cantilever body other end is equipped with flexible support mechanism, and the flexible support mechanism is equipped with the flexible buffer mechanism that supports buffer to cantilever body, not only have higher stability and impact resistance in structure, but also can realize real-time buffering and energy absorption to vibration and impact in operation, significantly improve the service life and reliability of system.

Description

Technical Field

[0001] This utility model relates to the field of flexible bucket wheel reclaimer cantilever technology, and particularly to a flexible bucket wheel reclaimer cantilever. Background Technology

[0002] During the operation of a bucket wheel reclaimer, its cantilever boom is prone to collisions with obstacles such as coal piles, travel tracks, and dam foundations, resulting in varying degrees of damage to the cantilever steel structure and auxiliary devices such as hydraulic oil pipes on the side of the boom, which in turn brings unpredictable economic losses to the enterprise.

[0003] A bucket wheel reclaimer cantilever mechanism with anti-collision protection function is disclosed in application number CN201721194144.0. The cantilever body includes a bucket wheel reclaimer cantilever body and a collision detection unit. The collision detection unit includes a microswitch and a support arm. One end of the support arm is fixedly connected to the side of the bucket wheel reclaimer cantilever body, and the other end is equipped with the microswitch. The microswitch is used to detect obstacles on the bucket wheel reclaimer cantilever, effectively preventing collisions between the cantilever boom and obstacles such as the travel track and dam foundation, ensuring the safe operation of the bucket wheel reclaimer.

[0004] However, in actual use, existing bucket wheel reclaimers mostly rely on mechanical limiters or rigid blocks for physical protection. Although sensors are installed to detect the displacement of the cantilever boom, when the sensors detect a collision risk, the cantilever boom, due to its large weight and inertia, cannot stop in time, making it easy for the cantilever boom to collide with the obstacle. When the cantilever boom comes into contact with the obstacle, the impact force acts directly on the steel structure. Lacking buffering and energy absorption mechanisms, the impact energy cannot be released in stages but is concentrated instantly on the local structure, causing serious stress concentration problems.

[0005] Therefore, this utility model proposes a flexible bucket wheel reclaimer cantilever to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a flexible bucket wheel reclaimer cantilever to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a flexible bucket wheel reclaimer cantilever, comprising a cantilever body, a bucket wheel reclaimer installed at the output end of the cantilever body, a conveyor belt mechanism installed inside the cantilever body, a tension cable installed on the cantilever body, a flexible support mechanism assembled at the other end of the cantilever body, and a flexible buffer mechanism installed on the flexible support mechanism for supporting and buffering the cantilever body; The flexible support mechanism includes a support base, a load-bearing plate integrally formed at the bottom of the support base, a reinforcing rib plate integrally formed at the top of the support base, a base plate integrally formed at the end of the cantilever body, the end of the base plate being rotatably mounted on the support base via a movable shaft, the base plate sitting on the load-bearing plate, and a flexible buffer pad being assembled between the base plate and the load-bearing plate.

[0008] Preferably, the top of the support base has an opening groove that matches the base plate, the movable shaft is installed in the opening groove, and a flexible buffer pad is laid on the bottom of the base plate.

[0009] Preferably, the flexible buffer mechanism includes three sets of buffer units with identical structures. Each set of buffer units includes a hydraulic cylinder. Both ends of the hydraulic cylinder are hinged to a hinge seat via pins. One set of hinge seats is fixed to the side wall of the reinforcing rib plate. A storage groove is provided on the top of the base plate. A slide is slidably assembled in the storage groove. Another set of hinge seats is fixedly installed on the top of the slide. A reinforcing buffer spring is fixedly installed on the side wall of the slide. The other end of the reinforcing buffer spring is fixed to the inner side wall of the storage groove.

[0010] Preferably, a dovetail groove is formed on the inner side wall of the storage slot, and a dovetail slider is integrally formed on the slide block and slidably assembled with the dovetail groove.

[0011] Preferably, a displacement sensor is fixedly installed on the slide block, and the displacement sensor is connected to the electrical control box, which drives and controls the hydraulic cylinder.

[0012] Preferably, an angle sensor is fixedly installed on the slide block, and the angle sensor is connected to the electrical control box.

[0013] Preferably, the cantilever body is equipped with a guardrail, which is positioned above the conveyor belt mechanism, and the tension cable is fixedly installed on the guardrail.

[0014] The technical effects and advantages of this utility model are as follows: The bucket wheel reclaimer in this invention achieves continuous material collection through rotation. The collected material is smoothly output via a conveyor belt mechanism inside the cantilever body. Under the centrifugal force, inertial force, and material collection impact generated by the bucket wheel's operation, the cantilever relies on a composite force system formed by the tension cable and flexible support mechanism. The tension cable bears the upper tension, while the flexible support mechanism bears the lower support force. The synergistic effect of the two makes the force distribution of the cantilever body more uniform, significantly reducing structural bending deformation. The flexible buffer mechanism further absorbs high-frequency impacts and instantaneous loads, achieving dynamic buffering and structural protection, ensuring that the bucket wheel reclaimer can maintain operational stability and safety when encountering hard materials or sudden collisions. The cable provides tensile constraints and force balance to the cantilever body, which can share part of the bending moment load and maintain structural stability when the cantilever is subjected to external disturbances, thereby improving the stiffness and vibration resistance of the entire cantilever body. The flexible support mechanism is set at the end of the cantilever body away from the bucket wheel reclaimer, so that the impact of the cantilever body during movement or load change is flexibly buffered. The flexible buffer mechanism set on the flexible support mechanism is used to absorb part of the impact energy when the bucket wheel reclaimer is running or the cantilever body is subjected to external impact. By buffering, vibration absorption and hydraulic support, the impact load on the cantilever body and key connection nodes is reduced, effectively preventing structural fatigue and permanent deformation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural diagram of the present invention.

[0016] In the diagram: 10. Cantilever body; 11. Guardrail; 12. Base plate; 20. Bucket wheel reclaimer; 30. Tensioning cable; 40. Conveyor belt mechanism; 50. Flexible support mechanism; 51. Support seat; 52. Load-bearing plate; 53. Movable shaft; 54. Reinforcing rib; 55. Flexible buffer pad; 60. Flexible buffer mechanism; 61. Hydraulic cylinder; 62. Hinge seat; 63. Storage slot; 64. Slide seat; 65. Reinforcing buffer spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 2As shown, this embodiment discloses a flexible bucket wheel reclaimer cantilever, including a cantilever body 10, a bucket wheel reclaimer 20 installed at the output end of the cantilever body 10, a conveyor belt mechanism 40 installed inside the cantilever body 10, a tension cable 30 installed on the cantilever body 10, a flexible support mechanism 50 assembled at the other end of the cantilever body 10, a flexible buffer mechanism 60 installed on the flexible support mechanism 50 to support and buffer the cantilever body 10, a guardrail 11 assembled on the cantilever body 10, the guardrail 11 being positioned above the conveyor belt mechanism 40, and the tension cable 30 being fixedly installed on the guardrail 11. In actual use, the tension cable 30 is used to provide tensile constraints and... The force balance not only shares part of the bending moment load, but also maintains structural stability when the cantilever is subjected to external disturbances, thereby improving the stiffness and vibration resistance of the entire cantilever body 10. The flexible support mechanism 50 is set at the end of the cantilever body 10 away from the bucket wheel reclaimer 20, so that the impact of the cantilever body 10 during movement or load change is flexibly buffered. The flexible buffer mechanism 60 set on the flexible support mechanism 50 is used to absorb part of the impact energy when the bucket wheel reclaimer 20 is running or the cantilever body 10 is subjected to external impact. By buffering, vibration absorption and hydraulic support, the impact load on the cantilever body 10 and key connection nodes is reduced, effectively preventing structural fatigue and permanent deformation.

[0019] Please see Figure 2 The flexible support mechanism 50 includes a support base 51, a load-bearing plate 52 integrally formed at the bottom of the support base 51, a reinforcing rib 54 integrally formed at the top of the support base 51, a base plate 12 integrally formed at the end of the cantilever body 10, the end of the base plate 12 is rotatably mounted on the support base 51 via a movable shaft 53, the base plate 12 sits on the load-bearing plate 52, and a flexible buffer pad 55 is assembled between the base plate 12 and the load-bearing plate 52. The top of the support base 51 has an opening groove that matches the base plate 12, the movable shaft 53 is installed in the opening groove, and the flexible buffer pad 55 is laid on the bottom of the base plate 12.

[0020] In actual use, the cantilever body 10 is mounted on the support base 51 via the movable shaft 53, thereby ensuring that the cantilever body 10 can rotate relative to the support base 51. This allows the cantilever body 10 to rotate relative to the movable shaft 53 when it is impacted, providing a buffer space for the cantilever body 10 to absorb the impact and prevent the cantilever body 10 from being damaged by hard impacts. In addition, the flexible buffer pad 55 can absorb the micro-impacts of the cantilever body 10 during operation, improving its seismic resistance.

[0021] The bucket wheel reclaimer 20 continuously reclaims material through rotation. The reclaimed material is smoothly output through the conveyor belt mechanism 40 inside the cantilever body 10. Under the centrifugal force, inertial force and material reclaiming impact generated by the bucket wheel operation, the cantilever relies on the tension cable 30 and the flexible support mechanism 50 to form a composite force system. The tension cable 30 bears the upper tension, and the flexible support mechanism 50 bears the bottom support force. The synergistic effect of the two makes the force distribution of the cantilever body 10 more uniform and significantly reduces structural bending deformation. The flexible buffer mechanism 60 further absorbs high-frequency impact and instantaneous load, realizing dynamic buffering and structural protection, ensuring that the bucket wheel reclaimer 20 can still maintain operational stability and safety when encountering hard materials or sudden collisions.

[0022] Please see Figure 2 The flexible buffer mechanism 60 includes three sets of identical buffer units. Each buffer unit includes a hydraulic cylinder 61. Both ends of the hydraulic cylinder 61 are hinged to hinge seats 62 via pins. One set of hinge seats 62 is fixed to the side wall of the reinforcing rib plate 54. A storage groove 63 is provided on the top of the base plate 12. A slide block 64 is slidably assembled in the storage groove 63. Another set of hinge seats 62 is fixedly installed on the top of the slide block 64. A reinforcing buffer spring 65 is fixedly installed on the side wall of the slide block 64. The other end of the reinforcing buffer spring 65 is fixed to the inner side wall of the storage groove 63. The reinforcing buffer spring 65 provides auxiliary elastic potential energy storage while the hydraulic cylinder 61 absorbs energy, making the buffering process gentler. After the impact, the reinforced buffer spring 65 releases the stored elastic potential energy to assist the cantilever body 10 in resetting, thus forming a dual buffering mechanism of hydraulic and mechanical elastic coordination, achieving efficient absorption and automatic recovery of impact energy. Through the coordinated action of components such as hydraulic cylinder 61, hinge seat 62, slide 64 and reinforced buffer spring 65, the cantilever body 10 can achieve graded buffering and automatic resetting when it rotates around the movable shaft 53 under force or collision. Moreover, the hydraulic cylinder 61 can perform slight extension and contraction when the cantilever body 10 deforms or vibrates, and achieves smooth energy release through the controllable flow of oil, thereby absorbing the impact force and reducing the direct effect on the cantilever body 10.

[0023] It is worth noting that when the cantilever body 10 is in a horizontal position, the compression length of the reinforcing buffer spring 65 is the preload support force of the cantilever body 10. In actual use, the compression length of the reinforcing buffer spring 65 can be increased by adjusting the extension length of the hydraulic cylinder 61, thereby increasing the support strength of the cantilever body 10 after being impacted in the working chamber. This prevents the rotational force of the cantilever body 10 around the movable shaft 53 from being too large after being subjected to impact and collision loads. By increasing the initial compression length of the reinforcing buffer spring 65, the flexible support force of the cantilever body 10 is adapted, which greatly increases the adaptability and protection of the cantilever structure during operation.

[0024] The inner wall of the storage groove 63 is provided with a dovetail groove, and the slide block 64 is integrally formed with a dovetail slider that slides with the dovetail groove. The storage groove 63 not only provides the movement space of the slide block 64, but also forms a stable guiding structure through the cooperation of the dovetail groove and the dovetail slider on the slide block 64. This ensures that the slide block 64 slides only along the direction of the storage groove 63 when it is impacted, avoiding lateral deviation and improving the accuracy and reliability of the cushioning movement.

[0025] A displacement sensor is fixedly installed on the slide 64 and connected to the electrical control box. The electrical control box drives and controls the hydraulic cylinder 61. An angle sensor is also fixedly installed on the slide 64 and connected to the electrical control box. The displacement sensor is used to accurately detect the displacement of the slide 64 during the collision buffering process, while the angle sensor is used to sense the attitude change of the cantilever body 10. The data collected by both are transmitted to the electrical control box via cable. After processing the signal, the electrical control box can automatically adjust the working pressure of the hydraulic cylinder 61 according to the actual impact intensity and displacement trend, forming a closed-loop control system. When the buffer stroke is detected to be close to the limit, the electrical control box can issue a command in time to adjust the oil flow rate of the hydraulic system or activate the overflow protection, thereby effectively preventing the mechanism from overloaded or subjected to secondary impact.

[0026] Through the coordinated operation of the above structures, the flexible buffer mechanism 60 can not only provide a controllable flexible response when the cantilever body 10 is subjected to impact or load changes, but also automatically adjust the buffer characteristics according to different working conditions to achieve a complete working cycle of "adaptive buffering - energy absorption - automatic reset". The hydraulic cylinder 61 is responsible for absorbing most of the impact energy and controlling the buffering rate, the reinforced buffer spring 65 provides a stable reset force, the dovetail guide structure ensures sliding accuracy, and the sensor detection and feedback realize intelligent adjustment. Overall, this solution effectively solves the problem that traditional rigid cantilever arms are prone to permanent deformation or weld fatigue under concentrated force or instantaneous impact, and greatly improves the impact resistance and service life of the cantilever body 10.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible bucket wheel reclaimer cantilever, comprising a cantilever body (10), wherein a bucket wheel reclaimer (20) is installed at the output end of the cantilever body (10), a conveyor belt mechanism (40) is installed inside the cantilever body (10), and a tensioning cable (30) is installed on the cantilever body (10), characterized in that: The other end of the cantilever body (10) is equipped with a flexible support mechanism (50), and a flexible buffer mechanism (60) for supporting and buffering the cantilever body (10) is installed on the flexible support mechanism (50). The flexible support mechanism (50) includes a support base (51), a load-bearing plate (52) integrally formed at the bottom of the support base (51), a reinforcing rib (54) integrally formed at the top of the support base (51), a base plate (12) integrally formed at the end of the cantilever body (10), the end of the base plate (12) is rotatably mounted on the support base (51) via a movable shaft (53), the base plate (12) sits on the load-bearing plate (52), and a flexible buffer pad (55) is assembled between the base plate (12) and the load-bearing plate (52).

2. The flexible bucket wheel reclaimer cantilever according to claim 1, characterized in that: The support base (51) has an opening groove at the top that matches the base plate (12), the movable shaft (53) is installed in the opening groove, and the flexible buffer pad (55) is laid on the bottom of the base plate (12).

3. The flexible bucket wheel reclaimer cantilever according to claim 1, characterized in that: The flexible buffer mechanism (60) includes three sets of buffer units with the same structure. Each set of buffer units includes a hydraulic cylinder (61). Both ends of the hydraulic cylinder (61) are hinged with hinge seats (62) by pins. One set of hinge seats (62) is fixed on the side wall of the reinforcing rib plate (54). The bottom plate (12) has a storage groove (63) on the top. A slide (64) is slidably assembled in the storage groove (63). Another set of hinge seats (62) is fixedly installed on the top of the slide (64). A reinforcing buffer spring (65) is fixedly installed on the side wall of the slide (64). The other end of the reinforcing buffer spring (65) is fixed on the inner side wall of the storage groove (63).

4. The flexible bucket wheel reclaimer cantilever according to claim 3, characterized in that: The inner wall of the storage groove (63) is provided with a dovetail groove, and the slide block (64) is integrally formed with a dovetail slider that is slidably assembled with the dovetail groove.

5. The flexible bucket wheel reclaimer cantilever according to claim 4, characterized in that: A displacement sensor is fixedly installed on the slide (64). The displacement sensor is connected to the electrical control box, which drives and controls the hydraulic cylinder (61).

6. The flexible bucket wheel reclaimer cantilever according to claim 5, characterized in that: An angle sensor is fixedly installed on the slide (64), and the angle sensor is connected to the electrical control box.

7. The flexible bucket wheel reclaimer cantilever according to claim 1, characterized in that: The cantilever body (10) is equipped with a guardrail (11), which is located above the conveyor belt mechanism (40), and the tension cable (30) is fixedly installed on the guardrail (11).

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