A mine heavy truck transmission shaft protection damping device

Abstract

The utility model discloses a kind of mine heavy-duty truck transmission shaft protection damping device, it is related to the technical field of automobile accessories, comprising: shaft sleeve assembly, elastic buffer, protective cover, at least one first buffer and at least one second buffer, shaft sleeve assembly is used to connect transmission shaft and transmit power;Elastic buffer is arranged in the inner wall of shaft sleeve assembly, for buffering radial and / or torsional load received by shaft sleeve assembly;Protective cover is sleeved in the outside of shaft sleeve assembly, for isolating external pollutants;First buffer and second buffer are respectively arranged in the axial two ends of the inner wall of protective cover, for carrying out axial buffering and limiting of shaft sleeve assembly, simple structure, convenient to use, effectively improve the service life of transmission shaft, effectively guarantee the normal operation of vehicle.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a protective and shock-absorbing device for the drive shaft of a heavy-duty mining vehicle. Background Technology

[0002] As a key component in universal joint transmission systems, the driveshaft plays a crucial role in heavy-duty mining trucks, responsible for transmitting the power generated by the truck's generator to the wheels, thus providing the vehicle with driving force. Because the driveshaft is a high-speed, low-support rotating body, dynamic balance is extremely important; it typically undergoes dynamic balancing tests and adjustments before leaving the factory.

[0003] Currently, to prevent external dust and dirt from contacting the driveshaft of heavy-duty mining trucks, protective sleeves are usually installed on the outer surface of the driveshaft. However, during the operation of heavy-duty mining trucks, when the vehicle travels over uneven roads, it will generate vibrations and continuously apply pressure to the driveshaft. This can easily cause driveshaft resonance, resulting in noise in minor cases and damage to the driveshaft and some components in severe cases.

[0004] In the existing technology, the protective measures for the drive shaft of heavy mining trucks are limited and cannot effectively solve the various problems caused by vibration under complex road conditions. There is an urgent need for a device that can effectively protect and reduce vibration to meet the actual needs. Utility Model Content

[0005] The purpose of this invention is to provide a protective and shock-absorbing device for the drive shaft of a heavy-duty mining truck, which solves the problems existing in the prior art. It has a simple structure, is easy to use, effectively improves the service life of the drive shaft, and effectively ensures the normal operation of the vehicle.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a protective and shock-absorbing device for the drive shaft of a heavy-duty mining truck, comprising: a bushing assembly, an elastic buffer, a protective cover, at least one first buffer and at least one second buffer. The bushing assembly is used to connect the drive shaft and transmit power. The elastic buffer is disposed on the inner wall of the bushing assembly and is used to buffer the radial and / or torsional loads on the bushing assembly. The protective cover is sleeved on the outside of the bushing assembly and is used to isolate external contaminants. The first buffer and the second buffer are respectively disposed at both axial ends of the inner wall of the protective cover and are used to provide axial buffering and limiting for the bushing assembly.

[0008] Preferably, the bushing assembly includes a first connecting sleeve and a second connecting sleeve that are coaxially arranged and movable relative to each other.

[0009] Preferably, the outer wall of the first connecting sleeve is provided with a first limiting part, and the outer wall of the second connecting sleeve is provided with a second limiting part; the first buffer member is in movable contact with the first limiting part, and the second buffer member is in movable contact with the second limiting part.

[0010] Preferably, the first limiting part is a first limiting ring fixedly installed at the middle of the outer wall of the first connecting sleeve, and the second limiting part is a second limiting ring fixedly installed at the middle of the outer wall of the second connecting sleeve.

[0011] Preferably, the elastic buffer is an elastic connecting band, with its two ends connected to the first connecting sleeve and the second connecting sleeve, respectively.

[0012] Preferably, a first connecting ring is fixed to the end of the first connecting sleeve, and a plurality of first slots are provided on the first connecting ring; a second connecting ring is fixed to the end of the second connecting sleeve, and a plurality of second slots are provided on the second connecting ring; the two ends of the connecting strip are respectively movably engaged with the first connecting ring and the second connecting ring through the first slots and the second slots.

[0013] Preferably, the connecting strip is a pre-tensioned arc-shaped steel strip, and its radius of curvature in its natural state is smaller than the radius of the inner wall of the bushing assembly.

[0014] Preferably, the first and second buffer components are rubber gaskets or polyurethane gaskets.

[0015] Preferably, the first and second buffer components have L-shaped cross-sections, respectively covering the upper and lower edges of the inner wall of the protective cover.

[0016] Preferably, the protective cover is a segmented or integral cylindrical structure.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] This invention provides a protective and vibration-damping device for the drive shaft of a heavy-duty mining truck. It achieves a stable connection with the drive shaft and transmits power through a bushing assembly. The internal elastic buffer effectively buffers radial and torsional loads, reducing the vibration amplitude of the drive shaft during operation. The external protective cover isolates dust, dirt, and other external contaminants, preventing corrosion of the drive shaft and internal components. Simultaneously, the first and second buffer components at both axial ends of the inner wall of the protective cover provide axial buffering and limiting for the bushing assembly, preventing excessive axial displacement and further enhancing the stability and safety of the device. This device has a reasonable structural design, adaptable to the complex working environment of heavy-duty mining trucks. Through multiple buffering and protection mechanisms, it significantly reduces the risk of damage to the drive shaft due to vibration and contamination, thereby extending the service life of the drive shaft and ensuring the normal operation of the heavy-duty mining truck. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall front structure of the protective and shock-absorbing device for the drive shaft of a heavy-duty mining truck provided by this utility model;

[0021] Figure 2 A schematic diagram of the front structure of the coupling assembly of the mining heavy-duty truck drive shaft protection and shock absorption device provided by this utility model;

[0022] Figure 3 A schematic diagram of the front structure of the elastic steel strip connecting belt of the mining heavy-duty truck drive shaft protection and shock absorption device provided by this utility model.

[0023] In the figure: 10, bushing assembly; 11, elastic buffer; 12, protective cover; 13, first buffer; 14, second buffer; 15, first connecting sleeve; 16, first limiting part; 17, first connecting ring; 18, first slot; 19, second connecting sleeve; 20, second limiting part; 21, second connecting ring; 22, second slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The purpose of this invention is to provide a protective and shock-absorbing device for the drive shaft of a heavy-duty mining truck, which solves the problems existing in the prior art. It has a simple structure, is easy to use, effectively improves the service life of the drive shaft, and effectively ensures the normal operation of the vehicle.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] This utility model provides a protective and shock-absorbing device for the drive shaft of a heavy-duty mining truck, such as... Figures 1-3 As shown, the device includes: a bushing assembly 10, an elastic buffer 11, a protective cover 12, at least one first buffer 13, and at least one second buffer 14. The bushing assembly 10 is used to connect the drive shaft and transmit power. The elastic buffer 11 is disposed on the inner wall of the bushing assembly 10 to buffer the radial and / or torsional loads on the bushing assembly 10. The protective cover 12 is fitted over the outside of the bushing assembly 10 to isolate external contaminants. The first buffer 13 and the second buffer 14 are respectively disposed at the axial ends of the inner wall of the protective cover 12 to provide axial buffering and limiting of the bushing assembly 10. This design clearly defines the main components and their functions, constructing a complete protective and vibration damping system. The bushing assembly 10 ensures power transmission, while the elastic buffer 11 reduces the impact of radial and torsional loads on the bushing assembly 10, extending its service life. The protective cover 12 effectively prevents the intrusion of external contaminants such as dust and debris. The first buffer 13 and the second buffer 14 provide axial buffering and limiting, ensuring stable operation of the bushing assembly 10 in the axial direction and reducing damage caused by axial vibration.

[0028] In a preferred embodiment, the bushing assembly 10 includes a first connecting sleeve 15 and a second connecting sleeve 19 coaxially arranged and movable relative to each other. The coaxial and movable first connecting sleeve 15 and second connecting sleeve 19 allow the bushing assembly 10 to better adapt to changes in the motion of the drive shaft and the working requirements under different operating conditions during power transmission. The movable design increases the flexibility and adaptability of the bushing assembly 10, effectively reduces stress concentration caused by restricted movement of the bushing assembly 10, and improves the reliability and stability of the entire device.

[0029] In a preferred embodiment, the outer wall of the first connecting sleeve 15 is provided with a first limiting portion 16, and the outer wall of the second connecting sleeve 19 is provided with a second limiting portion 20. The first buffer member 13 is in movable contact with the first limiting portion 16, and the second buffer member 14 is in movable contact with the second limiting portion 20. By providing the first limiting portion 16 and the second limiting portion 20, and having them in movable contact with the first buffer member 13 and the second buffer member 14, the axial movement range of the bushing assembly 10 within the protective cover 12 can be precisely limited. This not only protects the bushing assembly 10 to work stably within a specified stroke, preventing failure due to excessive displacement, but also allows the first buffer member 13 and the second buffer member 14 to more effectively perform their buffering function, absorbing axial impact forces and ensuring the axial protection and shock absorption performance of the device.

[0030] In a preferred embodiment, the first limiting part 16 is a first limiting ring fixedly installed at the middle of the outer wall of the first connecting sleeve 15, and the second limiting part 20 is a second limiting ring fixedly installed at the middle of the outer wall of the second connecting sleeve 19. Specifically, the first limiting part 16 and the second limiting part 20 are designed as limiting rings fixed at the middle of the outer wall of the sleeve. This structure is both simple and reliable. The positional design of the limiting rings can accurately position and constrain the bushing assembly 10 in the axial direction, ensuring that during long-term use, the first buffer 13 and the second buffer 14 can always cooperate well with the limiting rings to stably buffer and limit the bushing assembly 10 in the axial direction, thereby improving the stability and durability of the entire device.

[0031] In a preferred embodiment, the elastic buffer 11 is an elastic connecting band, with its two ends connected to the first connecting sleeve 15 and the second connecting sleeve 19, respectively. Using an elastic connecting band as the elastic buffer 11, with its two ends connected to the first connecting sleeve 15 and the second connecting sleeve 19, effectively disperses the radial and torsional loads on the bushing assembly 10, utilizing the elasticity of the connecting band to absorb and buffer these loads. This connection method makes the connection between the elastic buffer 11 and the bushing assembly 10 more direct and tight, enabling a rapid response to the forces acting on the bushing assembly 10, enhancing the buffering effect, and protecting the bushing assembly 10 from excessive impact forces.

[0032] In a preferred embodiment, a first connecting ring 17 is fixed to the end of the first connecting sleeve 15, and the first connecting ring 17 has a plurality of first slots 18; a second connecting ring 21 is fixed to the end of the second connecting sleeve 19, and the second connecting ring 21 has a plurality of second slots 22; the two ends of the connecting band are respectively movably engaged with the first connecting ring 17 and the second connecting ring 21 through the first slots 18 and the second slots 22. By setting connecting rings at the ends of the first connecting sleeve 15 and the second connecting sleeve 19 and opening slots to movably engage with the elastic connecting band, a stable connection between the elastic connecting band and the bushing assembly 10 is achieved. This engaging connection structure not only facilitates installation and disassembly, but also ensures that the elastic connecting band can be firmly connected to the bushing assembly 10 under various working conditions, stably playing a buffering role. The movable engaging design also allows the elastic connecting band to better adapt to the slight deformation and movement of the bushing assembly 10 when bearing load, maintaining the stability of the buffering effect.

[0033] In a preferred embodiment, the connecting strip is a pre-tensioned arc-shaped steel strip, whose radius of curvature in its natural state is smaller than the radius of the inner wall of the bushing assembly 10. Using a pre-tensioned arc-shaped steel strip as the elastic connecting strip, with its radius of curvature smaller than the inner wall radius of the bushing assembly 10, ensures that the connecting strip is in a pre-tensioned state after installation. This pre-tensioned state allows the connecting strip to effectively buffer under relatively small loads, enhancing its support and buffering capacity for the bushing assembly 10, resulting in better response speed and buffering performance when facing radial and torsional load changes. Simultaneously, the arc-shaped structure provides better contact with the inner wall of the bushing assembly 10, evenly distributing the force and improving the buffering effect and the reliability of the device.

[0034] In a preferred embodiment, the first buffer 13 and the second buffer 14 are rubber washers or polyurethane washers. Rubber or polyurethane washers have good elasticity and damping characteristics, effectively absorbing and buffering the axial impact force received by the bushing assembly 10. These two materials also have certain wear resistance and corrosion resistance, enabling them to maintain stable buffering performance over a long period in harsh working environments. Selecting them as the first buffer 13 and the second buffer 14 not only reduces the axial vibration of the bushing assembly 10 but also extends the service life of the buffers and the entire device.

[0035] In a preferred embodiment, the first buffer 13 and the second buffer 14 have L-shaped cross sections, respectively covering the upper edge and lower edge of the inner wall of the protective cover 12. Designing the cross sections of the first buffer 13 and the second buffer 14 to be L-shaped and covering the inner wall edge of the protective cover 12 can, on the one hand, increase the contact area between the buffer and the limiting part of the bushing assembly 10, making the buffering force distribution more uniform and improving the buffering effect; on the other hand, the L-shaped structure can better cooperate with the protective cover 12, playing a sealing and protective role, preventing dust, debris and other objects from entering the device from the gap between the protective cover 12 and the bushing assembly 10, further improving the protective performance and service life of the device.

[0036] In a preferred embodiment, the protective cover 12 is a segmented or integral cylindrical structure, providing a choice between segmented or integral cylindrical structures to meet different production, installation, and usage requirements. The segmented protective cover 12 is easy to transport and install, and can be combined on-site according to actual conditions; the integral protective cover 12 has better sealing and integrity, providing more reliable protection, reducing the entry of external contaminants, preventing the bushing assembly 10 from being contaminated and corroded, thereby extending the service life of the bushing assembly 10 and the entire device.

[0037] The following are the instructions for using the drive shaft protection and shock absorption device for heavy-duty mining trucks:

[0038] Device installation

[0039] The two ends of the elastic buffer 11 (an arc-shaped steel strip connecting band with pretension and a radius of curvature smaller than the inner wall radius of the bushing assembly 10 in its natural state) are respectively engaged with the first connecting ring 17 and the second connecting ring 21 through the first slot 18 and the second slot 22, respectively, to ensure that the connection is stable and the connecting band is installed in place, so that it can play an elastic buffering role, and is installed on the inner wall of the bushing assembly 10 (first connecting sleeve 15 and second connecting sleeve 19).

[0040] The first buffer 13 and the second buffer 14 (rubber gasket or polyurethane gasket, L-shaped cross-section) are respectively wrapped around the upper edge and lower edge of the inner wall of the protective cover 12.

[0041] The bushing assembly 10 is mounted on the drive shaft of the mining heavy-duty truck and connected and fixed so that the bushing assembly 10 can transmit power normally along with the drive shaft.

[0042] Then, the protective cover 12 is fitted onto the outside of the bushing assembly 10 to ensure that the protective cover 12 and the bushing assembly 10 are tightly connected without interference. At this time, the first buffer 13 is in contact with the first limiting ring (located in the middle of the outer wall of the first connecting sleeve 15), and the second buffer 14 is in contact with the second limiting ring (located in the middle of the outer wall of the second connecting sleeve 19).

[0043] Normal working phase

[0044] When the mining heavy-duty truck starts and runs, the power generated by the engine is transmitted to the drive shaft, and the power is stably transmitted through the bushing assembly 10.

[0045] During power transmission, if the drive shaft is subjected to radial and / or torsional loads, the elastic buffer 11 set on the inner wall of the bushing assembly 10 will immediately deform and absorb and buffer these loads using its own elasticity, thereby reducing the radial pressure and torsional force borne by the bushing assembly 10 and effectively avoiding damage to the bushing assembly 10 caused by these excessive forces.

[0046] Meanwhile, during the operation of heavy-duty mining trucks, especially when traversing bumpy and uneven roads, axial vibration and impact will occur, causing axial displacement of the bushing assembly 10. At this time, the first buffer 13 and the second buffer 14, respectively located at both ends of the inner wall of the protective cover 12, will function, cooperating with the first and second limiting rings on the bushing assembly 10 to buffer the axial impact force, limit the axial displacement of the bushing assembly 10 within a reasonable range, maintain the stability of the device, and ensure that the bushing assembly 10 can continuously and stably transmit power.

[0047] During this period, the protective cover 12 plays a role in isolating external pollutants, preventing dust, dirt and other debris from entering the device, protecting components such as the bushing assembly 10 and the elastic buffer 11 from pollution and corrosion, and ensuring that the device is in good working condition for a long time.

[0048] Maintenance and inspection phase

[0049] Regularly inspect the elastic buffer 11 for wear, aging, or breakage. If the performance of the elastic buffer 11 is found to be degraded or damaged, it should be replaced in time to ensure its buffering function is normal.

[0050] Inspect the wear condition of the first buffer component 13 and the second buffer component 14. Due to repeated contact with the limit ring and buffering vibration during operation, wear may occur. If severe wear is found to affect the buffering capacity, the buffer component should be replaced with one of the same specifications in a timely manner.

[0051] Inspect the protective cover 12 for damage, cracks, or other issues to ensure its airtightness. If any damage is found, repair or replace the protective cover 12 promptly to ensure its continued and effective isolation of external contaminants.

[0052] Check whether the connection parts of the bushing assembly 10 are secure, such as the first connecting sleeve 15, the second connecting sleeve 19 and their connection with the drive shaft, etc., to ensure that there is no loosening after long-term use. If there is any loosening, tighten the connecting parts in time to ensure the stability of power transmission and the normal operation of the device.

[0053] Through the above usage and maintenance methods, this protective shock absorber can continuously and effectively provide protection and shock absorption for the drive shaft of mining heavy-duty trucks, ensuring that the trucks can run smoothly under various complex working conditions and reducing the occurrence of malfunctions and component damage.

[0054] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A protective and shock-absorbing device for the drive shaft of a heavy-duty mining truck, characterized in that, include: A bushing assembly for connecting a drive shaft and transmitting power; An elastic buffer is disposed on the inner wall of the bushing assembly for buffering radial and / or torsional loads on the bushing assembly; A protective cover, which is fitted over the outside of the bushing assembly, is used to isolate external contaminants; At least one first buffer and at least one second buffer are respectively disposed at both ends of the inner wall of the protective cover, for axial buffering and limiting of the bushing assembly.

2. The protective shock absorption device according to claim 1, characterized in that, The bushing assembly includes a first connecting sleeve and a second connecting sleeve that are coaxially arranged and can move relative to each other.

3. The protective shock absorption device according to claim 2, characterized in that, The outer wall of the first connecting sleeve is provided with a first limiting part, and the outer wall of the second connecting sleeve is provided with a second limiting part; the first buffer member is in movable contact with the first limiting part, and the second buffer member is in movable contact with the second limiting part.

4. The protective shock absorption device according to claim 3, characterized in that, The first limiting part is a first limiting ring fixedly installed at the middle of the outer wall of the first connecting sleeve, and the second limiting part is a second limiting ring fixedly installed at the middle of the outer wall of the second connecting sleeve.

5. The protective shock absorption device according to claim 2, characterized in that, The elastic buffer is an elastic connecting band, with its two ends connected to the first connecting sleeve and the second connecting sleeve, respectively.

6. The protective shock absorption device according to claim 5, characterized in that, The first connecting sleeve has a first connecting ring fixed to its end, and the first connecting ring has a plurality of first slots; the second connecting sleeve has a second connecting ring fixed to its end, and the second connecting ring has a plurality of second slots; the two ends of the connecting belt are respectively engaged with the first connecting ring and the second connecting ring through the first slots and the second slots.

7. The protective shock absorption device according to claim 6, characterized in that, The connecting strip is a pre-tensioned arc-shaped steel strip, and its radius of curvature in its natural state is smaller than the radius of the inner wall of the bushing assembly.

8. The protective shock absorption device according to claim 1, characterized in that, The first and second buffer components are rubber gaskets or polyurethane gaskets.

9. The protective shock absorption device according to claim 8, characterized in that, The first and second buffer components have L-shaped cross-sections and respectively cover the upper and lower edges of the inner wall of the protective cover.

10. The protective shock absorption device according to claim 1, characterized in that, The protective cover is a segmented or integral cylindrical structure.

Images