Driving wheel structure of hydraulic excavator
Through the modular design of the hydraulic excavator drive wheel, including the drive plate, side wheels and fixed components, the high maintenance cost caused by the break of the drive teeth is solved, and a simple maintenance process and reduced maintenance cost is achieved.
Patent Information
- Application Number
- CN202421412664.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The driving wheel of the hydraulic excavator is prone to breaking the driving teeth due to fatigue damage in a high-strength working environment, resulting in high maintenance costs.
The structural design includes a drive disk, side wheels and fixing components, and the damaged drive disk is easily replaced by disassemblying the fixing bolts, reducing the complexity and time of the maintenance process.
Simplifies the maintenance process, reduces maintenance costs, reduces the downtime of the excavator, and achieves more efficient maintenance and lower maintenance costs.
Smart Images
Figure CN222495962U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of excavator drive wheels, and in particular to a hydraulic excavator drive wheel structure. Background Art
[0002] Hydraulic excavator is a kind of heavy machinery equipment widely used in earthwork engineering, mining, road construction and other fields. With its powerful excavation, loading and transportation capabilities, it can efficiently complete the operation tasks in various complex environments; as an important part of the hydraulic excavator, the drive wheel not only bears the weight of the excavator, but also is the key component to realize the excavator's walking function. The drive wheel converts power into mechanical energy through direct contact with the ground, thereby driving the excavator to move; in order to ensure efficient and safe excavation operations in various working environments, hydraulic excavators usually adopt a crawler design, which provides excellent ground adaptability and stability, enabling the excavator to operate stably in various terrains and working conditions, and to exert the best working efficiency.
[0003] As the use time of hydraulic excavators increases and the work intensity increases, the technical problems faced by the drive wheel are becoming increasingly prominent. In a high-intensity working environment, the drive teeth are subjected to enormous pressure and torque, and long-term accumulated fatigue damage may eventually cause them to break; when the drive teeth break, the entire drive wheel usually needs to be replaced. The drive wheel is an important component of the excavator, and its manufacturing and replacement costs are relatively high, which leads to high maintenance costs and brings considerable pressure to the company's operations and profits. Therefore, the optimization of the drive wheel structure and the reduction of maintenance costs have become urgent issues to be solved. Utility Model Content
[0004] In order to solve the problem of high maintenance cost after a drive wheel breaks, the present application provides a hydraulic excavator drive wheel structure.
[0005] The present application provides a hydraulic excavator driving wheel structure adopting the following technical solution:
[0006] A driving wheel structure of a hydraulic excavator comprises a driving disc and two side wheels, the two side wheels are symmetrically arranged on both sides of the driving disc, each of the side wheels is spaced apart from the driving disc, a wheel core is arranged in the driving disc, a fixing assembly is arranged between the two side wheels and the driving disc, the fixing assembly comprises a plurality of fixing bolts, a plurality of main wheel bosses are arranged in the driving disc, the plurality of main wheel bosses are arranged in sequence along the circumferential direction of the driving disc, a plurality of side bosses are arranged in each side wheel, the plurality of side bosses are arranged along the circumferential direction of the corresponding side wheels, the side bosses correspond one-to-one to the main wheel bosses, and each of the fixing bolts corresponds to the main wheel boss and the two side side bosses respectively.
[0007] When the driving teeth are broken, the entire driving wheel usually needs to be replaced. The driving wheel is an important part of the excavator, and its manufacturing and replacement costs are relatively high, which leads to high maintenance costs and puts considerable pressure on the operation and profit of the enterprise. By adopting the above technical solution, including the driving disc and the side wheels on both sides, the fixing assembly is installed between the side wheels on both sides and the driving disc; when the driving teeth on the driving disc are broken, the entire driving wheel is disassembled and removed, and the fixing bolts in the fixing assembly are removed using appropriate tools. When all the fixing bolts are removed, the side wheels are gently removed from the driving disc. After the side wheels are removed, the damaged driving disc is removed and a new driving disc is placed on the The removed side wheels are reinstalled on the original position of the driving disc, and the side wheels are fixed to the driving disc with fixing bolts. After the driving disc is replaced, it can be reinstalled into the excavator and put into use again. The arrangement of the driving disc, the side wheels on both sides and the fixing components makes the maintenance process simpler. The modular design makes it easy to replace parts, improves the maintenance efficiency and is easy to operate. Only the fixing bolts need to be removed to remove the damaged driving disc, and then a new driving disc can be installed and re-fixed, which reduces the downtime of the excavator. At the same time, it is cost-effective and there is no need to replace the entire driving wheel, which greatly reduces the maintenance cost and can restore the normal use of the excavator at a lower cost.
[0008] Optionally, main sealing rings are provided on both sides of the driving disc, and the main sealing rings are arranged along the circumferential direction of the driving disc, and auxiliary sealing rings for cooperating with the corresponding main sealing rings are provided on the two side wheels.
[0009] By adopting the above technical scheme, the main sealing rings are installed and fixed on both sides of the driving disc, and the auxiliary sealing rings are installed and fixed on the side wheels; through the arrangement of the main sealing rings and the auxiliary sealing rings, the gap between the driving disc and the side wheels can be effectively eliminated, thereby improving the overall structural strength of the driving wheel, reducing the vibration and noise caused by the existence of the gap, and improving the stability of the excavator during operation. At the same time, impurities such as dust and sand in the external environment are effectively prevented from entering the interior of the driving wheel, with good sealing performance, reducing the failure rate caused by the entry of impurities, and improving the durability of the excavator.
[0010] Optionally, a plurality of spokes for support are arranged between the wheel core and the driving disk, and the two ends of each spoke are respectively connected to the outer ring of the wheel core and the inner ring of the driving disk, and the plurality of spokes are arranged in sequence along the circumferential direction of the wheel core, and each main wheel boss is arranged between two adjacent spokes.
[0011] By adopting the above technical solution, the spokes are installed between the wheel core and the drive disc; through the arrangement of a plurality of spokes, the structural strength of the drive disc can be enhanced, so that the drive disc can maintain stability and reliability when subjected to heavy loads and complex working environments, and at the same time can effectively disperse the impact force, optimize the weight distribution, reduce the direct impact on the drive disc and the wheel core, and extend the service life.
[0012] Optionally, a sleeve for mounting the wheel axle is provided on the wheel core, and two ends of the sleeve extend toward the side wheels on both sides respectively.
[0013] By adopting the above technical solution, the sleeve is installed and fixed on the wheel core; the setting of the sleeve facilitates installation and disassembly, and the sleeve serves as the installation basis of the wheel axle, providing a solid structural support for the entire drive wheel, ensuring the stability and reliability of the drive wheel during operation.
[0014] Optionally, a plurality of key grooves for improving the connection strength are provided on the inner wall of the sleeve, and the plurality of key grooves are provided in sequence along the circumferential direction of the sleeve.
[0015] By adopting the above technical solution, the keyway is opened on the inner wall of the sleeve; by setting a plurality of keyways, the connection strength is improved, and the contact area between the sleeve and the connecting component (such as a bearing or a shaft) is increased, which helps to ensure that the connection part can maintain sufficient stability and reliability when subjected to high loads or high-speed operation to prevent loosening or slipping.
[0016] Optionally, the side wheel includes a hub, a rim and a tire, the rim is connected to the outer ring of the hub, a plurality of side bosses are sequentially connected to the inner ring of the hub, and the tire is sleeved on the outer ring of the rim.
[0017] By adopting the above technical solution, the side wheel body includes a hub, a rim and a tire; through the arrangement of the hub, the rim and the tire, the hub bears the weight and rotational force of the excavator body, the rim connects the hub and the tire, and bears a large amount of squeezing, bending and shearing forces generated by the vehicle on the tire during driving, and the tire bears various pressures and torques from road bumps, torsion, etc. The side wheel body provides the excavator with stable and efficient driving performance through the synergistic effect of the hub, the rim and the tire, and can adapt to a variety of working environments.
[0018] Optionally, the rim outer ring is provided with side portions for limiting tire displacement, and the side portions are arranged along the circumferential direction of the rim.
[0019] By adopting the above technical solution, the side edge portion is integrally formed on the outer ring of the rim; the setting of the side edge portion simplifies the installation of the tire, and the side edge portion can limit the displacement of the tire and enhance the stability of the tire, which helps to improve the safety of the excavator's driving and operation and reduce safety accidents caused by tire displacement or falling off.
[0020] Optionally, the tire is provided with a plurality of friction strips for increasing friction, and the plurality of friction strips are arranged alternately on the tire surface in sequence.
[0021] By adopting the above technical solution, a number of friction strips are formed on the tire; by setting a number of friction strips, the contact area and roughness between the tire and the ground are increased, the service life of the tire is extended, and the grip of the tire is improved, especially on wet or soft ground, which effectively prevents the tire from slipping or idling.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] The maintenance process is simpler through the setting of the drive disc, the side wheels on both sides and the fixing components. The modular design makes it easy to replace parts, improves the maintenance efficiency and is easy to operate. You only need to remove the fixing bolts to remove the damaged drive disc, and then install a new drive disc and re-fix it, which reduces the downtime of the excavator. At the same time, it is cost-effective and there is no need to replace the entire drive wheel, which greatly reduces the maintenance cost and can restore the normal use of the excavator at a lower cost;
[0024] The main sealing ring and the auxiliary sealing ring can effectively eliminate the gap between the drive disc and the side wheel, improve the overall structural strength of the drive wheel, reduce the vibration and noise caused by the gap, and improve the stability of the excavator during operation. At the same time, it effectively prevents dust, sand and other impurities in the external environment from entering the drive wheel. The sealing performance is good, the failure rate caused by the entry of impurities is reduced, and the durability of the excavator is improved.
[0025] By setting up a number of spokes, the structural strength of the drive disc can be enhanced, so that the drive disc can maintain stability and reliability when subjected to heavy loads and complex working environments. At the same time, it can effectively disperse the impact force, optimize the weight distribution, reduce the direct impact on the drive disc and the wheel core, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural schematic diagram of a hydraulic excavator drive wheel structure in an embodiment of the present application.
[0027] Figure 2 It is a schematic diagram of the exploded structure of the fixing component in the embodiment of the present application.
[0028] Figure 3 It is a schematic diagram of the structure of the drive disk used to reflect the embodiment of the present application.
[0029] Figure 4 It is a schematic diagram of the structure of the side wheels in the embodiment of the present application.
[0030] Explanation of the reference numerals: 1. driving disc; 11. spokes; 2. side wheels; 21. wheel hub; 22. rim; 23. tire; 3. wheel core; 4. main wheel boss; 5. main sealing ring; 6. side boss; 7. secondary sealing ring; 8. fixing assembly; 81. fixing bolt; 9. sleeve; 91. keyway; 10. side portion; 12. friction strip. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-4 This application is described in further detail.
[0032] The embodiment of the present application discloses a driving wheel structure of a hydraulic excavator. Figure 1 The driving wheel structure of the hydraulic excavator includes a driving disc 1 and side wheels 2 on both sides. In this embodiment, the driving disc 1 has a plurality of driving teeth on its outer ring. The side wheels 2 on both sides are symmetrically installed on both sides of the driving disc 1. Each side wheel 2 is spaced apart from the driving disc 1. A fixing assembly 8 is installed between the side wheels 2 and the driving disc 1. The fixing assembly 8 is used to fix the side wheels 2 and the driving disc 1.
[0033] Reference Figure 2 Main sealing rings 5 are welded and fixed on both sides of the driving disc 1, and auxiliary sealing rings 7 are welded and fixed on both side wheels 2. The auxiliary sealing ring 7 is located on the side of the side wheel 2 close to the driving disc 1. The auxiliary sealing ring 7 corresponds to the main sealing ring 5 on one side of the driving disc 1, so as to effectively eliminate the gap between the driving disc 1 and the side wheel 2, thereby improving the overall structural strength of the driving wheel, reducing the vibration and noise caused by the existence of the gap, and improving the stability of the excavator during operation. At the same time, it effectively prevents impurities such as dust and sand in the external environment from entering the interior of the driving wheel, has good sealing performance, reduces the failure rate caused by the entry of impurities, and improves the durability of the excavator.
[0034] Reference Figure 2 and Figure 3 A wheel core 3 is installed on the inner ring of the driving disc 1, and a plurality of spokes 11 are welded and fixed between the inner ring of the driving disc 1 and the wheel core 3. Both ends of each spoke 11 are respectively connected to the inner ring of the driving disc 1 and the wheel core 3. The plurality of spokes 11 are sequentially installed along the circumferential direction of the wheel core 3 to enhance the structural strength of the driving disc 1, so that the driving disc 1 can maintain stability and reliability when subjected to heavy loads and complex working environments, and can effectively disperse impact force, optimize weight distribution, reduce direct impact on the driving disc 1 and the wheel core 3, and extend service life.
[0035] Reference Figure 2 and Figure 3A sleeve 9 is fixedly installed in the wheel core 3. In this embodiment, the sleeve 9 is used to install the wheel axle. The two ends of the sleeve 9 extend toward the side wheels 2 on both sides. The inner wall of each sleeve 9 is provided with a plurality of key grooves 91. The plurality of key grooves 91 are sequentially opened along the circumferential direction of the sleeve 9. The sleeve 9 serves as the installation basis of the wheel axle and provides a stable structural support for the entire driving wheel to ensure the stability and reliability of the driving wheel during operation. At the same time, the key groove 91 improves the connection strength and increases the contact area between the sleeve 9 and the connecting parts (such as bearings or shafts), which helps to ensure that the connection parts can maintain sufficient stability and reliability when subjected to high loads or high-speed operation to prevent loosening or slipping.
[0036] Reference Figure 2 and Figure 4 Each side wheel 2 includes a wheel hub 21, a rim 22 and a tire 23. The rim 22 is connected to the outer ring of the wheel hub 21, and the tire 23 is sleeved on the outer ring of the rim 22. A side portion 10 is integrally formed on the outer ring of the rim 22. The side portion 10 is arranged along the circumferential direction of the rim 22. The side portion 10 can limit the displacement of the tire 23 and enhance the stability of the tire 23, which helps to improve the safety of the excavator's driving and operation and reduce safety accidents caused by the displacement or falling off of the tire 23.
[0037] Reference Figure 2 and Figure 4 A plurality of friction strips 12 are integrally formed on the surface of the tire 23, and the plurality of friction strips 12 are staggeredly installed on the surface of the tire 23 in sequence to increase the contact area and roughness between the tire 23 and the ground, extend the service life of the tire 23, and help improve the grip of the tire 23, especially on wet or soft ground, effectively preventing the tire 23 from slipping or idling.
[0038] Reference Figure 2 and Figure 4 The fixing assembly 8 includes a plurality of fixing bolts 81. A plurality of main wheel bosses 4 are integrally formed on the inner ring of the driving disc 1. The plurality of main wheel bosses 4 are sequentially installed along the circumferential direction of the driving disc 1. In this embodiment, the main wheel boss 4 is located between two adjacent spokes 11. A plurality of side bosses 6 are integrally formed on the inner ring of each side wheel 2. The plurality of side bosses 6 are sequentially installed along the circumferential direction of the corresponding side wheel 2. In this embodiment, the number of side bosses 6 of the side wheel 2 is consistent with the number of main wheel bosses 4 on the driving disc 1. At the same time, the number of fixing bolts 81 is consistent with the number of main wheel bosses 4. Each fixing bolt 81 is distributed corresponding to the main wheel boss 4 and the two side bosses 6. Through holes for the fixing bolts 81 to pass through are opened on the main wheel boss 4 and the side bosses 6.
[0039] The implementation principle of a hydraulic excavator driving wheel structure of the embodiment of the present application is as follows: when the driving teeth on the driving disc 1 are broken, the entire driving wheel is disassembled and removed, and the fixing bolts 81 in the fixing assembly 8 are removed using appropriate tools. When all the fixing bolts 81 are removed, the side wheel 2 is gently moved away from the driving disc 1. After the side wheel 2 is removed, the damaged driving disc 1 is removed, and a new driving disc 1 is placed in the position of the original driving disc 1. The removed side wheel 2 is reinstalled, and the side wheel 2 is fixed to the driving disc 1 using the fixing bolts 81. After the driving disc 1 is replaced, it can be reinstalled into the excavator and put into use again; through the arrangement of the driving disc 1, the side wheels 2 on both sides and the fixing assembly 8, the maintenance process is simpler, and the modular design makes it easy to replace parts, improves maintenance efficiency, and is easy to operate. It only needs to remove the fixing bolts 81 to remove the damaged driving disc 1, and then install the new driving disc 1 and re-fix it, which reduces the downtime of the excavator and is cost-effective. There is no need to replace the entire driving wheel, which greatly reduces the maintenance cost and can restore the normal use of the excavator at a lower cost.
[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A driving wheel structure for a hydraulic excavator, characterized in that: The invention comprises a driving disc (1) and two side wheels (2), wherein the two side wheels (2) are symmetrically arranged on both sides of the driving disc (1), and each of the side wheels (2) is arranged at a distance from the driving disc (1). A wheel core (3) is arranged in the driving disc (1), and a fixing assembly (8) is arranged between the two side wheels (2) and the driving disc (1). The fixing assembly (8) comprises a plurality of fixing bolts (81). A plurality of main wheel bosses (4) are arranged in sequence along the circumferential direction of the driving disc (1), and a plurality of side bosses (6) are arranged in each side wheel (2), and the plurality of side bosses (6) are arranged along the circumferential direction of the corresponding side wheel (2). The side bosses (6) correspond to the main wheel bosses (4) one by one, and each fixing bolt (81) corresponds to the main wheel boss (4) and the two side bosses (6) respectively.
2. A hydraulic excavator driving wheel structure according to claim 1, characterized in that: Main sealing rings (5) are provided on both sides of the driving disc (1), and the main sealing rings (5) are arranged along the circumferential direction of the driving disc (1). A secondary sealing ring (7) for cooperating with the corresponding main sealing ring (5) is provided on the two side wheels (2).
3. The driving wheel structure of a hydraulic excavator according to claim 1, characterized in that: A plurality of spokes (11) for support are arranged between the wheel core (3) and the drive plate (1), the two ends of each spoke (11) being respectively connected to the outer ring of the wheel core (3) and the inner ring of the drive plate (1), the plurality of spokes (11) being arranged in sequence along the circumferential direction of the wheel core (3), and each main wheel boss (4) being arranged between two adjacent spokes (11).
4. A driving wheel structure for a hydraulic excavator according to claim 3, characterized in that: The wheel core (3) is provided with a sleeve (9) for mounting the wheel axle, and two ends of the sleeve (9) extend towards the side wheels (2) on both sides respectively.
5. A driving wheel structure for a hydraulic excavator according to claim 4, characterized in that: A plurality of key grooves (91) for improving the connection strength are provided on the inner wall of the sleeve (9), and the plurality of key grooves (91) are provided in sequence along the circumferential direction of the sleeve (9).
6. The driving wheel structure of a hydraulic excavator according to claim 1, characterized in that: The side wheel (2) comprises a wheel hub (21), a wheel rim (22) and a tire (23); the wheel rim (22) is connected to the outer ring of the wheel hub (21); a plurality of side bosses (6) are sequentially connected to the inner ring of the wheel hub (21); and the tire (23) is sleeved on the outer ring of the wheel rim (22).
7. A driving wheel structure for a hydraulic excavator according to claim 6, characterized in that: The outer ring of the wheel rim (22) is provided with a side edge portion (10) for limiting the displacement of the tire (23), and the side edge portion (10) is arranged along the circumferential direction of the wheel rim (22).
8. The driving wheel structure of a hydraulic excavator according to claim 6, characterized in that: The tire (23) is provided with a plurality of friction strips (12) for increasing friction, and the plurality of friction strips (12) are sequentially and staggeredly arranged on the surface of the tire (23).