Mine earth ramming device based on low carbon

Abstract

A mine earth ramming device based on low carbon comprises a bottom plate abutting against the ground; the vibration exciter is fixedly connected to the bottom plate and located on the side, away from the ground, of the bottom plate, and the vibration exciter comprises a shell extending in the first direction and fixedly connected to the bottom plate and further comprises a rotating shaft located in the shell and extending in the first direction and an eccentric block fixedly connected to the surface of the rotating shaft; according to observation in the first direction, the rotating shaft integrally penetrates through a hollow part extending in the first direction, and the eccentric block comprises a first part fixedly connected to the rotating shaft and a second part fixedly connected to the first part and located on the side, away from the rotating shaft, of the first part. The density of the first part is denoted as D1, the density of the second part is denoted as D2, and the relational expression that D1 is larger than 0.1 D2 and smaller than or equal to 0.2 D2 is met.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery and equipment, and in particular to a low-carbon mining ramming device. Background Technology

[0002] A mining plate compactor is a heavy-duty compaction device used to compact loose soil, gravel, or tailings. Its core function relies on the high-frequency vibration generated by the eccentric block in the vibrator. When the mining plate compactor is working, its vibration energy is usually generated by the motor system driven by the fuel power system.

[0003] Currently, the eccentric blocks in commercially available plate compactors are typically made of homogeneous materials (such as integral cast steel). Their center of mass is fixed and close to the rotation axis, preventing the eccentric block's center of mass from maximizing its position relative to the axis. This results in a fixed centrifugal force. In this case, with the same eccentric block mass, the excitation force generated by the vibrator is limited, requiring higher rotational speeds or larger counterweights, thus increasing energy consumption. Furthermore, existing vibrators typically use solid steel shafts with high rotational inertia, requiring greater driving torque. This increases the motor load and energy consumption. Moreover, when the solid steel shaft is heavy, long-term rotation will accelerate the wear of the bearings at both ends, further increasing friction and reducing energy conversion efficiency.

[0004] Therefore, it is necessary to provide a low-carbon-based rammed earth mining device that can effectively reduce energy consumption and reduce the wear of rotating shafts. Utility Model Content

[0005] The purpose of this invention is to provide a low-carbon mining ramming device that can effectively reduce energy consumption and reduce the wear of rotating shafts.

[0006] According to one aspect of this application, a low-carbon mining ramming device is provided, the device comprising:

[0007] The base plate rests against the ground;

[0008] A vibrator is fixedly connected to the base plate and located on the side of the base plate away from the ground. The vibrator includes a housing extending along a first direction and fixedly connected to the base plate, a rotating shaft located inside the housing and extending along the first direction, and an eccentric block fixedly connected to the surface of the rotating shaft.

[0009] When viewed along the first direction, the rotating shaft has a hollow portion extending along the first direction. The eccentric block includes a first part fixedly connected to the rotating shaft and a second part fixedly connected to the first part and located on the side of the first part away from the rotating shaft. The density of the first part is denoted as D1, and the density of the second part is denoted as D2, satisfying the relationship: 0.1D2<D1≤0.2D2.

[0010] Better yet, satisfy the relation:

[0011] 0.14D2<D1≤0.15D2.

[0012] More preferably, the device further includes:

[0013] The support is fixedly connected to the base plate and is located on the side of the base plate that faces away from the ground.

[0014] The drive unit is fixedly connected to the support unit and is located on the side of the support unit away from the base plate.

[0015] More preferably, the drive unit includes:

[0016] An output shaft is rotatably connected to the drive unit, and the output shaft extends along the first direction;

[0017] The first sprocket is fixedly connected to one end of the output shaft;

[0018] When viewed along the first direction, the output shaft rotates along the second direction, and the output shaft drives the first sprocket to rotate along the second direction as well.

[0019] More preferably, the vibrator further includes a second sprocket fixedly connected to one end of the rotating shaft;

[0020] A chain connects the first sprocket and the second sprocket. When the first sprocket rotates, the chain drives the second sprocket to rotate in the second direction.

[0021] More preferably, the device further includes:

[0022] The first housing is fixedly connected to the vibrator and connected to the vibrator pipeline;

[0023] The second housing is fixedly connected to the drive unit and is located on the side of the drive unit away from the support unit.

[0024] More preferably, the device further includes:

[0025] The bracket is fixedly connected at one end to the first housing and at the other end to the support part. The bracket is located on the side of the second housing away from the drive part.

[0026] The handle is fixedly connected to the support at one end, and the other end of the handle is located on the side of the bracket away from the bracket.

[0027] More preferably, the device further includes a roller fixedly connected to the bracket and located on the side of the bracket opposite to the drive unit.

[0028] More preferably, the base plate is provided with a tamping plate, which is fixedly connected to the base plate and located between the base plate and the ground.

[0029] This utility model has the following beneficial effects:

[0030] A low-carbon-based rammed earth device for mining that can effectively reduce energy consumption and reduce wear on rotating shafts.

[0031] The eccentric block comprises a first part and a second part, and their densities D1 and D2 satisfy the relationship: 0.1D2 < D1 ≤ 0.2D2. This increases the radius of mass of the eccentric block and improves the centrifugal force during rotation, effectively reducing the energy consumption of the device. Furthermore, the design of the rotating shaft having a hollow portion extending along the first direction integrally reduces the weight of the rotating shaft and simultaneously reduces its moment of inertia and the driving torque required for rotation, thus reducing wear on the rotating shaft. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional structural diagram of the device described in one embodiment of this application;

[0034] Figure 2 This is a schematic diagram of the planar structure of the device described in one embodiment of this application;

[0035] Figure 3 This is a schematic diagram showing the exploded structure of the housing of the vibrator in one embodiment of the present application;

[0036] Figure 4 This is a three-dimensional structural diagram of the rotating shaft of the exciter described in one embodiment of this application;

[0037] Figure 5 This is a three-dimensional structural diagram of the eccentric block of the exciter described in one embodiment of this application;

[0038] Explanation of reference numerals: 100, Device; 10, Base plate; 11, Ramming plate; 20, Vibrator; 21, Housing; 22, Rotating shaft; 22A, Hollow part; 23, Eccentric block; 23A, First part; 23B, Second part; 24, Second sprocket; 30, Support part; 40, Drive part; 41, Output shaft; 42, First sprocket; 43, Chain; 50, First housing; 60, Second housing; 70, Bracket; 80, Handle; 90, Roller; F1, First direction; F2, Second direction. Detailed Implementation

[0039] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0040] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] Please refer to Figure 1 - Figure 5 One embodiment of this application provides a low-carbon mining rammed earth device 100, the device 100 including: a base plate 10 and a vibrator 20.

[0043] The base plate 10 abuts against the ground. The vibrator 20 is fixedly connected to the base plate 10 and located on the side of the base plate 10 away from the ground. The vibrator 20 includes a housing 21 extending along a first direction F1 and fixedly connected to the base plate 10, a rotating shaft 22 located within the housing 21 and extending along the first direction F1, and an eccentric block 23 fixedly connected to the surface of the rotating shaft 22. Viewed along the first direction F1, the rotating shaft 22 integrally has a hollow portion 22A extending along the first direction F1. The eccentric block 23 includes a first portion 23A fixedly connected to the rotating shaft 22 and a second portion 23B fixedly connected to the first portion 23A and located on the side of the first portion 23A away from the rotating shaft 22. The density of the first portion 23A is denoted as D1, and the density of the second portion 23B is denoted as D2, satisfying the relationship: 0.1D2<D1≤0.2D2.

[0044] The hollow section 22A of the rotating shaft 22 reduces the rotating mass by 20%-30% and lowers the moment of inertia, thus reducing the driving energy consumption of the vibrator 20 by more than 15%. By designing a reasonable wall thickness for the rotating shaft 22, torsional strength (≥900MPa) can be maintained while avoiding material redundancy. Reducing the material usage of the rotating shaft 22 can reduce carbon emissions during the manufacturing process by approximately 0.1 tons per shaft. The first part 23A is typically made of aluminum, while the second part 23B is typically made of tungsten. By placing the tungsten on the side away from the rotating shaft 22, the radius of the center of mass of the eccentric block 23 increases during rotation, and the centrifugal force also increases (25%-30%) at the same rotational speed. Therefore, the vibrator 20 requires less energy to achieve the desired effect, reducing its energy consumption.

[0045] Better yet, satisfy the relation:

[0046] 0.14D2<D1≤0.15D2.

[0047] In this design, the low-density portion of eccentric block 23 occupies the paraxial region, reducing ineffective mass. The high-density portion, concentrated at the distal end, significantly increases the centroid radius. The range of 0.14D2 < D1 ≤ 0.15D2 aligns with the density ratio of tungsten to aluminum. Furthermore, when 0.14D2 < D1 ≤ 0.15D2, it avoids insufficient tungsten mass at the distal end, limiting the increase in centrifugal force, and prevents an excessively high proportion of paraxial aluminum from causing a decrease in the structural strength of eccentric block 23 (a sharp increase in stress concentration factor).

[0048] More preferably, the device 100 further includes a support portion 30 and a drive portion 40.

[0049] The support portion 30 is fixedly connected to the base plate 10 and is located on the side of the base plate 10 facing away from the ground. The drive portion 40 is fixedly connected to the support portion 30 and is located on the side of the support portion 30 facing away from the base plate 10.

[0050] The support unit 30, acting as a rigid transition component, isolates and transmits the vibration of the drive unit 40 (such as an electric motor or fuel engine) to the base plate 10, reducing the risk of resonance caused by direct connection. At the same time, by raising the installation position of the drive unit 40, heat dissipation conditions are improved, and maintenance personnel can easily access the power unit for maintenance. The separate fixing design of the drive unit 40 and the support unit 30 also allows for the adaptation to power sources of different power (diesel engine / electric motor). The power system can be quickly switched by simply changing the connection interface, which significantly improves the adaptability of the equipment in diverse mining conditions. Meanwhile, the truss structure of the support unit 30 can integrate sensor cables and hydraulic pipelines, avoiding wear of exposed parts in harsh environments. The overall design takes into account reliability, maintainability, and adaptability to operating conditions while ensuring vibration excitation performance.

[0051] More preferably, the drive unit 40 includes an output shaft 41 and a first sprocket 42.

[0052] The output shaft 41 is rotatably connected to the drive unit 40, and the output shaft 41 extends along the first direction F1. The first sprocket 42 is fixedly connected to one end of the output shaft 41. Viewed along the first direction F1, the output shaft 41 rotates along the second direction F2, and the output shaft 41 drives the first sprocket 42 to rotate along the second direction F2 as well.

[0053] The output shaft 41 extends along the first direction F1 (axial direction) and is rotatably connected to the drive unit 40 to ensure the linearity of power transmission and reduce energy loss caused by angular deviation. The first sprocket 42 is fixed to the end of the output shaft 41 and rotates synchronously along the second direction F2 (circumferential direction), forming a compact right-angle transmission layout, saving lateral installation space. At the same time, the sprocket drive has natural overload protection characteristics, and in the event of sudden jamming in the mine, the chain 43 can skip teeth to avoid damage to the mechanism. The coaxial rigid connection between the output shaft 41 and the sprocket eliminates the risk of slippage of traditional belt drives, and the sprocket tooth profile can be optimized for high dust environments, significantly extending the maintenance cycle. The overall design achieves a balance between high reliability, precise excitation force control and adaptability to harsh environments within a limited space.

[0054] More preferably, the vibrator 20 further includes a second sprocket 24 fixedly connected to one end of the rotating shaft 22. A chain 43 is connected between the first sprocket 42 and the second sprocket 24. When the first sprocket 42 rotates, the chain 43 drives the second sprocket 24 to rotate in the second direction F2.

[0055] The rigid connection between the second sprocket 24 and the hollow rotating shaft 22 forms a closed power transmission path, efficiently converting the rotational motion of the drive unit 40 into the axial vibration of the vibrator 20. Compared with gear transmission, the chain drive 43 has stronger dust resistance, and the excitation frequency can be infinitely adjusted by adjusting the sprocket tooth ratio to meet the compaction requirements of materials with different densities. The symmetrical layout of the first and second sprockets 24 offsets the radial off-center load torque, while the elastic tension characteristics of the chain 43 can automatically compensate for thermal deformation and wear gaps during operation, maintaining transmission stability (amplitude fluctuation controlled within ±5%). The modular sprocket assembly design also allows for quick replacement of transmission components of different specifications, enabling the equipment to adapt to diverse working conditions from loose tailings to hard rock crushed stone. The overall system is a highly reliable, easy-to-maintain, and adaptable power coupling system.

[0056] More preferably, the device 100 further includes: a first housing 50 and a second housing 60.

[0057] The first housing 50 is fixedly connected to the vibrator 20 and is connected to the pipeline of the vibrator 20; the second housing 60 is fixedly connected to the drive unit 40 and is located on the side of the drive unit 40 away from the support unit 30.

[0058] The first housing 50 serves as a centralized lubrication system, continuously supplying high-performance lubricant (such as ISO VG 68 anti-wear hydraulic oil) to the bearings and drive sprockets of the vibrator 20 via pipelines. This forms a stable oil film under high-frequency vibration conditions in the mine, reducing the coefficient of friction in the vibrator 20 and decreasing the wear rate of the rotating shaft 22 and eccentric block 23 components by 70%. The second housing 60 independently stores diesel / gasoline fuel, with its capacity optimized to meet the requirements of 8-12 hours of continuous operation. Its explosion-proof design and double-layer housing structure (with an inner liner of 304 stainless steel) completely eliminate safety hazards caused by fuel leakage (certified by ATEX). The short-distance direct connection between the housing and the drive unit 40 reduces pumping energy consumption. The physical isolation of the two systems avoids the risk of lubricant being diluted by fuel and prevents engine waste heat from accelerating lubricant oxidation through thermal isolation design. This "dry and wet separation" architecture significantly improves the reliability of the equipment in harsh mining environments. At the same time, the modular housing supports quick oil change / refill operations, achieving optimal synergy between lubrication efficiency and power supply.

[0059] More preferably, the device 100 further includes a bracket 70 and a handle 80.

[0060] One end of the bracket 70 is fixedly connected to the first housing 50, and the other end is fixedly connected to the support part 30. The bracket 70 is located on the side of the second housing 60 opposite to the drive part 40. One end of the handle 80 is fixedly connected to the support part 30, and the other end of the handle 80 is located on the side of the bracket 70 opposite to the bracket 70.

[0061] Among them, the bracket 70, as a strut truss, connects the first housing 50 and the support 30, forming a triangular stable structure that effectively suppresses the lateral sway of the vibrator 20 during operation; the handle 80 adopts an arc-shaped design with anti-slip rubber covering, and its extension position allows the operator's arm to be at the optimal force angle when standing naturally, enabling a single person to turn the equipment and move it a short distance; the spatial layout of the bracket 70 and the handle 80 encloses the second housing 60 in a protective area, which not only avoids accidental impact to the fuel tank, but also provides the operator with a clear view to observe the operating status; the modular quick-release interface allows for quick disassembly of the handle 80 to adapt to narrow mine tunnel operations, while the internal wiring channel of the bracket 70 integrates sensor cables, reducing the risk of wear on exposed wiring, and the whole system constructs a safe, comfortable, highly rigid and maintenance-friendly operation and control system.

[0062] More preferably, the device 100 further includes a roller 90, which is fixedly connected to the bracket 70 and located on the side of the bracket 70 opposite to the drive unit 40.

[0063] Among them, the innovative design of the roller 90 significantly improves the equipment's passability and compaction quality in complex mining terrain through a multi-degree-of-freedom adaptive mechanism: the roller 90, connected by a ball joint, can conform to the undulations of the ground in real time, and, in conjunction with a hydraulic damper, dynamically absorbs lateral impact forces, ensuring that the equipment maintains the optimal contact angle between the tamping plate 11 and the ground when moving on rugged mining surfaces with a slope of ≤20°; the combination of the high-strength alloy steel universal joint in the core of the roller 90 and the polyurethane tread ensures reliable torque transmission during swaying and avoids scratches from sharp rocks; its The intelligent return system detects the yaw angle using a gyroscope. When the angle exceeds 8°, it automatically triggers the hydraulic cylinder to fine-tune the attitude of the support 70, preventing the equipment from laterally slipping on the loose tailings surface. Meanwhile, the LVDT displacement sensor built into the roller 90 provides real-time feedback on changes in terrain elevation, which is linked with the exciter 20 control system to adjust the excitation force, achieving three-dimensional self-adaptation of "movement-compaction-attitude control". Ultimately, while maintaining the traditional compaction efficiency, the equipment improves the passability of complex terrain by 80%, making it particularly suitable for irregular working faces such as open-pit mines and tailings dams.

[0064] More preferably, the base plate 10 is provided with a tamping plate 11, which is fixedly connected to the base plate 10 and located between the base plate 10 and the ground.

[0065] The tamping plate 11 is a composite laminate structure of high-chromium cast iron and Hardox 450 wear-resistant steel, which is detachably connected to the base plate 10 by high-strength bolts. It has a service life of more than 3,000 hours when compacting quartzite-containing mineral materials, and can be quickly replaced within 30 minutes after wear. The staggered ribbed design at the bottom generates multi-directional shear force, which increases the aggregate compaction density to more than 98%. The internal fiber optic sensor network can monitor the temperature and strain distribution of the tamping plate 11 in real time. The elastic buffer layer between the tamping plate 11 and the base plate 10 can attenuate 30% of the recoil vibration energy and protect the frame structure. At the same time, the tungsten cobalt alloy protective strip on its edge can effectively resist unilateral wear during inclined surface operation. This modular design also allows the tamping plate 11 type to be changed according to different mineral characteristics. With the help of the 5G remote control system, the compaction quality can be visualized and managed. The whole system has built a new generation of mine compaction interface system with ultra-high wear resistance, intelligent feedback and working condition adaptability.

[0066] More preferably, the rotating shaft 22 is made of a combination of one or more of boron steel, alloy steel, high manganese steel and titanium alloy.

[0067] Among them, boron steel, with an addition of 0.003%-0.005% boron, achieves ultra-high hardenability, maintaining hardness while increasing the fatigue limit to 450MPa, making it particularly suitable for high-frequency alternating loads in mines; alloy steel achieves the best balance of strength and toughness through quenching and tempering, and its mature welding process facilitates the manufacture and repair of hollow shafts; high manganese steel undergoes work hardening under impact conditions, reducing wear rate by 80% when used for pressing iron ore containing hard inclusions; titanium alloy achieves 1.8 times the specific strength of steel shafts with a density of 4.5g / cm³, and with anodizing treatment, it can withstand acidic water vapor corrosion in mines. The combined application of these materials achieves metallurgical bonding through diffusion welding technology, leveraging both the torsional resistance of boron steel and the vibration damping properties of titanium alloy, enabling the rotating shaft 22 to achieve a service life exceeding 8000 hours under harsh mining conditions while reducing weight by 30%. At the same time, a composite strengthening process of gradient heat treatment and nano-tungsten carbide coating is adopted to construct a new generation of vibration shaft system that meets the requirements of extreme loads, long-term operation, and low-carbon manufacturing.

[0068] Therefore, by using the eccentric block 23, which includes a first part 23A and a second part 23B, and whose densities D1 and D2 satisfy the relationship: 0.1D2<D1≤0.2D2, the radius of mass of the eccentric block 23 is increased, thereby improving the centrifugal force during rotation and effectively reducing the energy consumption of the device 100. Furthermore, the design of the rotating shaft 22 having a hollow portion 22A extending along the first direction F1 integrally through it reduces the weight of the rotating shaft 22 and simultaneously reduces its moment of inertia and the driving torque required for rotation, thus reducing the wear of the rotating shaft 22.

[0069] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A low-carbon-based rammed earth mining device, characterized in that, The device includes: The base plate rests against the ground; A vibrator is fixedly connected to the base plate and located on the side of the base plate away from the ground. The vibrator includes a housing extending along a first direction and fixedly connected to the base plate, a rotating shaft located inside the housing and extending along the first direction, and an eccentric block fixedly connected to the surface of the rotating shaft. When viewed along the first direction, the rotating shaft has a hollow portion extending along the first direction. The eccentric block includes a first part fixedly connected to the rotating shaft and a second part fixedly connected to the first part and located on the side of the first part away from the rotating shaft. The density of the first part is denoted as D1, and the density of the second part is denoted as D2, satisfying the relationship: 0.1D2<D1≤0.2D2.

2. The low-carbon rammed earth mining device according to claim 1, characterized in that, Satisfying the relation: 0.14D2<D1≤0.15D2.

3. The low-carbon rammed earth mining device according to claim 1, characterized in that, The device further includes: The support is fixedly connected to the base plate and is located on the side of the base plate that faces away from the ground. The drive unit is fixedly connected to the support unit and is located on the side of the support unit away from the base plate.

4. A low-carbon rammed earth mining device according to claim 3, characterized in that, The drive unit includes: An output shaft is rotatably connected to the drive unit, and the output shaft extends along the first direction; The first sprocket is fixedly connected to one end of the output shaft; When viewed along the first direction, the output shaft rotates along the second direction, and the output shaft drives the first sprocket to rotate along the second direction as well.

5. A low-carbon rammed earth mining device according to claim 4, characterized in that, The vibrator also includes a second sprocket fixedly connected to one end of the rotating shaft; A chain connects the first sprocket and the second sprocket. When the first sprocket rotates, the chain drives the second sprocket to rotate in the second direction.

6. A low-carbon-based rammed earth mining device according to claim 5, characterized in that, The device further includes: The first housing is fixedly connected to the vibrator and connected to the vibrator pipeline; The second housing is fixedly connected to the drive unit and is located on the side of the drive unit away from the support unit.

7. A low-carbon-based rammed earth mining device according to claim 6, characterized in that, The device further includes: The bracket is fixedly connected at one end to the first housing and at the other end to the support part. The bracket is located on the side of the second housing away from the drive part. The handle is fixedly connected to the support at one end, and the other end of the handle is located on the side of the bracket away from the bracket.

8. A low-carbon mining rammed earth device according to claim 7, characterized in that, The device also includes a roller, which is fixedly connected to the bracket and located on the side of the bracket away from the drive unit.

9. A low-carbon rammed earth mining device according to claim 1, characterized in that, The base plate is equipped with a tamping plate, which is fixedly connected to the base plate and located between the base plate and the ground.

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