Pitching damping device of bucket wheel machine
By installing a shock-absorbing mechanism on the bucket wheel excavator, the impact force during the cantilever pitching process is absorbed and dispersed, thus solving the problem of cantilever vibration, improving stability and service life, and reducing maintenance costs.
Patent Information
- Application Number
- CN202422684935.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing bucket wheel excavators experience significant impact forces during cantilever pitching due to load changes and uneven ground, leading to vibrations that affect work efficiency and safety.
A shock absorption mechanism was designed, comprising a base plate, a connecting plate, an inverted U-shaped support plate, a buffer assembly, a top plate, a connecting cylinder, a sliding column, a buffer spring, a connecting block, a connecting rod, a moving block, a limiting block, a damper, and a damping spring. Through the synergistic effect of these components, the impact force during the cantilever pitching process is absorbed and dispersed, thereby reducing vibration and noise.
It effectively reduces the impact between the cantilever and the hydraulic cylinder, improves the stability and service life of the bucket wheel excavator, avoids equipment damage, reduces maintenance costs, and meets more complex operational needs.
Smart Images
Figure CN223706563U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of bucket wheel machine, concretely relates to a bucket wheel machine luffing damping device. BACKGROUND
[0002] The bucket wheel machine is a kind of heavy excavating equipment widely used in open-pit mine and large earthwork engineering. It is mainly composed of traveling device, rack, cantilever and bucket wheel etc. main parts. The traveling device is usually caterpillar type, so that the bucket wheel machine can move in mining area, the rack is the supporting structure of bucket wheel machine, the cantilever is a key component, connects the bucket wheel and can rotate up and down to adapt to different digging height, and the bucket wheel is the core component of bucket wheel machine, equipped with multiple excavating buckets for excavating soil or ore etc. from ground. It has two operation modes of stacking and taking. The bulk material transported by belt conveyor is unloaded to the belt conveyor on the boom by tail car, and then thrown to the stockyard from the front end of boom. Through the operation of whole machine, the rotation and luffing of boom can make the material pile form the neat shape of trapezoidal section. The taking is realized continuously by boom rotation and bucket wheel rotation.
[0003] In prior art, the cantilever of bucket wheel machine generates great impact force in luffing process due to load variation, uneven ground etc. factors, and the impact force can cause the bucket wheel machine to easily vibrate in luffing process, which affects work efficiency and safety.
[0004] Therefore, a bucket wheel machine luffing damping device is needed to solve the problem that the impact force generated in luffing process of cantilever in prior art can cause the bucket wheel machine to easily vibrate in luffing process. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a bucket wheel machine luffing damping device to solve the problem proposed in the above background.
[0006] To achieve the above object, the utility model provides the following technical scheme: a bucket wheel machine luffing damping device, comprising body, control chamber, cantilever, hydraulic cylinder, damping mechanism, bucket wheel structure, traveling structure and material conveying pipe, the control chamber is arranged above the body, the cantilever is rotatably arranged on the left side of the body, the hydraulic cylinder is symmetrically arranged below the left side of the body, the damping mechanism is arranged between the cantilever and the hydraulic cylinder, the bucket wheel structure is arranged at the other end of the cantilever, the traveling structure is arranged below the body, and the material conveying pipe is arranged on the right side of the body.
[0007] The damping mechanism is composed of a bottom plate, connecting plates, an inverted U-shaped support plate, buffer assemblies, a top plate, a connecting cylinder, a sliding column, buffer springs, connecting blocks, connecting rods, moving blocks, limiting blocks, dampers and damping springs, the connecting plates are symmetrically fixedly connected to the two sides of the bottom plate, the inverted U-shaped support plate is fixedly connected to the top of the bottom plate, the buffer assemblies are symmetrically arranged on the top of the inverted U-shaped support plate, and the top plate is fixedly connected to the top of the buffer assemblies.
[0008] It should be noted that the connecting cylinder is fixedly connected to the middle part of the bottom surface of the top plate, the inside of the connecting cylinder is slidably connected with a sliding plate, the sliding column is fixedly connected to the bottom of the sliding plate, the sliding column extends below the connecting cylinder, and the buffer spring is fixedly connected between the top surface of the inner wall of the connecting cylinder and the sliding plate.
[0009] Further, the connecting block is fixedly connected to the bottom end of the sliding column, the connecting rods are symmetrically rotatably connected to the two sides of the connecting block, the other end of the connecting rod is rotatably connected with a rotating block, and the moving block is fixedly connected to the other side of the rotating block.
[0010] Further, the limiting block is fixedly connected to the bottom surface of the moving block, and the top surface of the bottom plate is provided with a limiting groove matched with the limiting block.
[0011] As a preferred embodiment, the dampers and the damping springs are fixedly connected between the moving block and the side wall of the inverted U-shaped support plate respectively, and the damping spring is sleeved outside the damper.
[0012] As a preferred embodiment, the connecting plates are uniformly provided with threaded holes, the connecting plates and the cantilever are fixedly connected through bolts, and the top plate is fixedly connected with the output end of the hydraulic cylinder.
[0013] Compared with the prior art, the bucket wheel machine luffing damping device has at least the following beneficial effects:
[0014] The damping mechanism can reduce the impact between the cantilever and the hydraulic cylinder during luffing, absorb or disperse the impact force generated during luffing, further reduce vibration and noise, improve the stability and service life of the bucket wheel machine, avoid damage or failure of the equipment caused by instantaneous adjustment of the angle of the cantilever, reduce maintenance cost and time, improve the overall performance of the bucket wheel machine, and meet more complex operation requirements. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a front view structural schematic diagram of the utility model;
[0016] Figure 2 It is a three-dimensional view structural schematic diagram of the utility model;
[0017] Figure 3 Figure is the position structure schematic diagram of the damping mechanism of the utility model;
[0018] Figure 4 Figure is the section structure schematic diagram of the damping mechanism of the utility model.
[0019] In the drawing: 1, machine body; 2, control chamber; 3, cantilever; 4, hydraulic cylinder; 5, damping mechanism; 6, bucket wheel structure; 7, walking structure; 8, material conveying pipe; 501, bottom plate; 502, connecting plate; 503, inverted U-shaped support plate; 504, buffer assembly; 505, top plate; 506, connecting cylinder; 507, sliding column; 508, buffer spring; 509, connecting block; 510, connecting rod; 511, moving block; 512, limiting block; 513, damper; 514, damping spring. DETAILED DESCRIPTION
[0020] The utility model is further described below in combination with examples.
[0021] Please refer to Figures 1-4 , the utility model provides a bucket wheel machine pitch damping device, including machine body 1, control chamber 2, cantilever 3, hydraulic cylinder 4, damping mechanism 5, bucket wheel structure 6, walking structure 7 and material conveying pipe 8, control chamber 2 is set at the top of machine body 1, cantilever 3 is rotationally arranged at the left side of machine body 1, hydraulic cylinder 4 is symmetrically arranged below the left side of machine body 1, damping mechanism 5 is arranged between cantilever 3 and hydraulic cylinder 4, bucket wheel structure 6 is arranged at the other end of cantilever 3, walking structure 7 is arranged below machine body 1, and material conveying pipe 8 is arranged at the right side of machine body 1.
[0022] Damping mechanism 5 is composed of bottom plate 501, connecting plate 502, inverted U-shaped support plate 503, buffer assembly 504, top plate 505, connecting cylinder 506, sliding column 507, buffer spring 508, connecting block 509, connecting rod 510, moving block 511, limiting block 512, damper 513 and damping spring 514, connecting plate 502 is fixedly connected on both sides of bottom plate 501 symmetrically, inverted U-shaped support plate 503 is fixedly connected on the top of bottom plate 501, buffer assembly 504 is symmetrically arranged on the top of inverted U-shaped support plate 503 all around, and top plate 505 is fixedly connected on the top of buffer assembly 504.
[0023] Further as Figure 2 , Figure 3 and Figure 4 It is worth specifically pointing out that connecting cylinder 506 is fixedly connected to the middle part of the bottom surface of top plate 505, the inside of connecting cylinder 506 is slidably connected with a sliding plate, sliding column 507 is fixedly connected below the sliding plate, sliding column 507 extends below connecting cylinder 506, and buffer spring 508 is fixedly connected between the sliding plate and the top surface of the inner wall of connecting cylinder 506.
[0024] Further as Figure 2 , Figure 3 and Figure 4 illustrated, it is worth noting that the connecting block 509 is fixedly connected to the bottom end of the slide column 507, the connecting rod 510 is symmetrically rotatably connected to the two sides of the connecting block 509, and the other end of the connecting rod 510 is rotatably connected with a rotating block, and the moving block 511 is fixedly connected to the other side of the rotating block.
[0025] Further as Figure 2 , Figure 3 and Figure 4 illustrated, it is worth noting that the limiting block 512 is fixedly connected to the bottom surface of the moving block 511, and the top surface of the bottom plate 501 is provided with a limiting groove matched with the limiting block 512.
[0026] The limiting block 512 arranged on the bottom surface will slide along the limiting groove on the top surface of the bottom plate 501, limit the movement range of the moving block 511, prevent over-movement, and improve the practicability of the mechanism.
[0027] Further as Figure 2 , Figure 3 and Figure 4 illustrated, it is worth noting that the damper 513 and the damping spring 514 are fixedly connected between the moving block 511 and the side wall of the inverted U-shaped support plate 503 respectively, and the damping spring 514 is sleeved outside the damper 513.
[0028] The damping force and the elastic restoring force of the damping spring 514 jointly act to further slow down the movement speed of the moving block 511, thereby playing a damping effect.
[0029] Further as Figure 2 , Figure 3 and Figure 4 illustrated, it is worth noting that the connecting plate 502 is uniformly provided with threaded holes, the connecting plate 502 and the cantilever 3 are fixedly connected through bolts, and the top plate 505 and the output end of the hydraulic cylinder 4 are fixedly connected.
[0030] The scheme has the following working process: in use, when the hydraulic cylinder 4 works, it will push the cantilever 3 to rotate, causing the bucket wheel structure 6 at the other end to rotate. During the luffing process of the cantilever 3, due to the factors of load change and uneven ground, a large impact force will be generated. Since the output end of the hydraulic cylinder 4 is fixedly connected with the top plate 505, the buffer assembly 504 will first absorb part of the impact, and at the same time the top plate 505 will move the sliding plate and the sliding column 507 inside the connecting cylinder 506 together. When the sliding column 507 moves downward, it will compress the buffer spring 508, thereby further absorbing the impact force, and the elastic restoring force of the buffer spring 508 will help slow down the descending speed of the top plate 505, thereby playing a damping effect. When the sliding column 507 moves downward, the connecting block 509 drives the connecting rod 510 to move, which in turn drives the moving block 511 to move, compressing the damping spring 514 and generating damping force through the damper 513. The damping force and the elastic restoring force of the damping spring 514 jointly act to further slow down the moving speed of the moving block 511, thereby playing a damping effect. Through the interaction of the above-mentioned various components, the damping mechanism 5 can effectively absorb and slow down the impact vibration generated during the luffing process of the cantilever 3 pushed by the hydraulic cylinder 4, not only protecting the cantilever 3 and the hydraulic cylinder 4 and other components from damage, but also improving the overall stability and reliability.
[0031] In summary: through the damping mechanism 5 arranged, the impact between the cantilever 3 and the hydraulic cylinder 4 during luffing can be reduced, the impact force generated during luffing can be absorbed or dispersed, further reducing vibration and noise, improving the stability and service life of the bucket wheel machine; avoiding overloading caused by instantaneous adjustment of the angle of the cantilever 3, which can cause equipment damage or failure, reducing maintenance cost and time, thereby improving the overall performance of the bucket wheel machine and meeting more complex operation requirements.
Claims
1. A pitch damping device for a bucket wheel excavator, comprising a body (1), a control room (2), a cantilever (3), a hydraulic cylinder (4), a damping mechanism (5), a bucket wheel structure (6), a traveling structure (7), and a conveying pipe (8), characterized in that: The control room (2) is located above the machine body (1), the cantilever (3) is rotatably located on the left side of the machine body (1), the hydraulic cylinder (4) is symmetrically located on the lower left side of the machine body (1), the shock absorption mechanism (5) is located between the cantilever (3) and the hydraulic cylinder (4), the bucket wheel structure (6) is located at the other end of the cantilever (3), the walking structure (7) is located below the machine body (1), and the material conveying pipe (8) is located on the right side of the machine body (1). The shock absorption mechanism (5) consists of a base plate (501), a connecting plate (502), an inverted U-shaped support plate (503), a buffer assembly (504), a top plate (505), a connecting cylinder (506), a sliding column (507), a buffer spring (508), a connecting block (509), a connecting rod (510), a moving block (511), a limiting block (512), a damper (513), and a damping spring (514). The connecting plate (502) is symmetrically fixedly connected to both sides of the base plate (501), the inverted U-shaped support plate (503) is fixedly connected to the top of the base plate (501), the buffer assembly (504) is symmetrically arranged around the top of the inverted U-shaped support plate (503), and the top plate (505) is fixedly connected to the top of the buffer assembly (504).
2. The pitch damping device for a bucket wheel excavator according to claim 1, characterized in that: The connecting cylinder (506) is fixedly connected to the middle of the bottom surface of the top plate (505). A sliding plate is slidably connected inside the connecting cylinder (506). The sliding column (507) is fixedly connected to the bottom of the sliding plate and extends out from the bottom of the connecting cylinder (506). The buffer spring (508) is fixedly connected between the sliding plate and the top surface of the inner wall of the connecting cylinder (506).
3. The pitch damping device for a bucket wheel excavator according to claim 2, characterized in that: The connecting block (509) is fixedly connected to the bottom end of the sliding column (507), the connecting rod (510) is symmetrically rotatably connected to both sides of the connecting block (509), the other end of the connecting rod (510) is rotatably connected to a rotating block, and the moving block (511) is fixedly connected to the other side of the rotating block.
4. The pitch damping device for a bucket wheel excavator according to claim 3, characterized in that: The limiting block (512) is fixedly connected to the bottom surface of the moving block (511), and the top surface of the base plate (501) is provided with a limiting groove that is compatible with the limiting block (512).
5. The pitch damping device for a bucket wheel excavator according to claim 4, characterized in that: The damper (513) and damping spring (514) are respectively fixedly connected between the moving block (511) and the side wall of the inverted U-shaped support plate (503), and the damping spring (514) is sleeved on the outside of the damper (513).
6. The pitch damping device for a bucket wheel excavator according to claim 5, characterized in that: The connecting plate (502) is provided with threaded holes evenly distributed. The connecting plate (502) is fixedly connected to the cantilever (3) by bolts. The top plate (505) is fixedly connected to the output end of the hydraulic cylinder (4).