Speed reducer protection device and crawler-type engineering vehicle
By designing a reducer protection device including a protective cover body and a sealing device, the problem of easy damage to the reducer in a large-tonnage hydraulic excavator is solved, and effective protection of the reducer and service life are extended.
Patent Information
- Application Number
- CN202421467876.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-26
Smart Images
Figure CN222513710U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a reducer protection device and belongs to the technical field of engineering vehicles. Background Art
[0002] The working conditions and environment of large-tonnage hydraulic excavators are relatively harsh. Large objects such as stones and coal blocks often fall or hit certain parts of the vehicle, causing damage or destruction to some important parts of the vehicle. In this regard, some important parts of the vehicle need to be designed with special protective devices to achieve the purpose of protecting and extending their service life, such as hydraulic pipelines and hydraulic motors of the drive system.
[0003] The reducer components in the drive system of large-tonnage hydraulic excavators play the role of driving the entire vehicle. Not only are they of great value, but they are also easily hit by large objects during vehicle operation, causing damage and even failure to work normally. Therefore, it is very necessary to design a protective device to prevent the reducer from being directly hit and damaged, thereby extending its service life. Summary of the invention
[0004] The utility model provides a reducer protection device, which can effectively prevent large objects from directly impacting the reducer of the crawler vehicle drive system, thereby avoiding damage to the reducer and prolonging the service life of the reducer to a certain extent.
[0005] The utility model is implemented according to the following technical solutions:
[0006] In a first aspect, the utility model provides a reducer protection device, comprising:
[0007] The protective cover body is a cylindrical structure, which is mounted on the outer axial surface of the drive system formed by the reducer and the drive wheel, and can rotate with the drive system to achieve radial protection of the reducer;
[0008] The sealing plate device is assembled on the outer opening axial surface of the protective cover body to realize the protection of the reducer in the axial direction.
[0009] In some embodiments, the protective cover body is a stepped cylindrical structure, and its outer diameter gradually decreases from the drive system outward.
[0010] In some embodiments, the protective cover body is formed by welding the first cylindrical structure, the second cylindrical structure and the third cylindrical structure or by integrally casting the three.
[0011] In some embodiments, the first cylindrical structure is formed by welding a ring plate I having a wide radial circumferential surface and a ring plate II having a wide axial circumferential surface or by casting the two together; the second cylindrical structure is formed by welding a ring plate III having a wide radial circumferential surface and a ring plate IV having a wide axial circumferential surface or by casting the two together; the third cylindrical structure is composed of a ring plate V having a wide radial circumferential surface; wherein the ring plate III is connected to the ring plate II, the ring plate V is connected to the ring plate IV, and the first, second and third cylindrical structures are connected in a coaxial manner to form the stepped cylindrical structure.
[0012] In some embodiments, the ring plate II is fixed in the inner ring of the ring plate I, and a plurality of axial through holes are evenly spaced along the circumferential direction on the ring plate II; a plurality of bolts are respectively inserted into the corresponding through holes on the ring plate II and the through holes on the driving wheel and then tightened in the threaded holes of the reducer to fix the protective cover body, the driving wheel and the reducer together; the distance from the outer axial surface of the ring plate II to the outer edge of the ring plate I is not less than the thickness of the bolt head, so that the bolt is completely in the protective cover body.
[0013] In some embodiments, each through hole on the ring plate II is provided with a sleeve which is coaxially arranged therewith and extends toward the driving wheel, so as to play a role in installing and positioning the bolts.
[0014] In some embodiments, a plurality of mounting plates are evenly spaced along the circumferential direction on the inner radial surface of the ring plate V, and each mounting plate is provided with an axial threaded hole; the sealing plate device as a whole is a circular plate structure with an outer diameter not less than the inner diameter of the ring plate V, and the sealing plate device is provided with a plurality of through holes corresponding to the threaded holes one by one; a plurality of bolts are respectively inserted into the corresponding through holes and tightened in the threaded holes of the mounting plate to fix the sealing plate device on the ring plate V.
[0015] In some embodiments, a plurality of ribs are evenly spaced along the circumferential direction at the connection between the outer axial surface of the ring plate II and the outer radial surface of the ring plate III.
[0016] In some embodiments, the sealing plate device is composed of a sealing plate and a handle located on the outer axial surface of the sealing plate; the sealing plate is also provided with at least one weight-reducing hole.
[0017] In the second aspect, the utility model provides a tracked engineering vehicle, including a drive system formed by a reducer, a drive wheel and the above-mentioned reducer protection device; the reducer, the drive wheel and the reducer protection device are fixed together by multiple bolts to form a rotatable motion system.
[0018] Beneficial effects of the utility model:
[0019] The reducer protection device provided by the utility model can effectively prevent large objects from directly hitting the reducer of the tracked vehicle drive system, thereby avoiding damage to the reducer and prolonging the service life of the reducer to a certain extent; at the same time, it can also protect the mounting bolts of the drive wheel in the drive system, avoiding damage to the bolt head, thereby prolonging the service life of the bolt. In addition, the sealing plate device of the utility model is fixed by bolts and can be disassembled, which is convenient for the detection and maintenance of the reducer in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.
[0021] In the attached picture:
[0022] Figure 1 This is the schematic diagram of the installation of the reducer protection device;
[0023] Figure 2 This is a schematic diagram of the structure of the reducer protection device;
[0024] Figure 3 It is a schematic diagram of the main structure of the protective cover;
[0025] Figure 4 It is a cross-sectional view of the main structure of the protective cover;
[0026] Figure 5 It is a schematic diagram of the structure of the sealing device;
[0027] Figure 6 A partial cross-sectional view of the installation of the reducer guard.
[0028] Figure identification: 1. reducer protection device, 2. protective cover body, 3. sealing plate device, 4. bolt, 5. ring plate I, 6. ring plate II, 7. ring plate III, 8. rib plate, 9. ring plate IV, 10. ring plate V, 11. mounting plate, 12. sleeve, 13. sealing plate, 14. handle, 15. bolt, 16. longitudinal beam, 17. driving wheel, 18. reducer.
[0029] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.
[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] like Figure 1 , Figure 2 As shown, a reducer protection device includes a protective cover body 2 and a sealing plate device 3; the protective cover body 2 is a cylindrical structure, which is assembled on the outer axial surface of the driving system formed by the reducer 18 and the driving wheel 17, and can rotate with the driving system to achieve radial protection of the reducer 18; the sealing plate device 3 is assembled on the outer opening axial surface of the protective cover body 2 to achieve axial protection of the reducer 18.
[0034] The above-mentioned protective cover main body is further described below.
[0035] like Figure 3 , Figure 4 As shown, the shield body 2 is a stepped cylindrical structure, and its outer diameter gradually decreases from the drive system to the outside. The shield body 2 is formed by welding the first cylindrical structure, the second cylindrical structure and the third cylindrical structure or by integral casting of the three.
[0036] In a preferred solution, the protective cover body 2 is a centrosymmetrical welded structure.
[0037] Further solutions, such as Figure 3 , Figure 4As shown, the first cylindrical structure is formed by welding a ring plate I5 having a wide radial circumferential surface and a ring plate II6 having a wide axial circumferential surface or by integrally casting the two; the second cylindrical structure is formed by welding a ring plate III7 having a wide radial circumferential surface and a ring plate IV9 having a wide axial circumferential surface or by integrally casting the two; the third cylindrical structure is formed by welding a ring plate V10 having a wide radial circumferential surface; wherein, the ring plate III7 is connected to the ring plate II6, the ring plate V10 is connected to the ring plate IV9, and the first, second and third cylindrical structures are connected in a coaxial manner to form a stepped cylindrical structure.
[0038] Further solutions, such as Figure 3 , Figure 4 As shown, the ring plate II 6 is fixed in the inner ring of the ring plate I 5, and four axial through holes are evenly spaced along the circumferential direction on the ring plate II 6; a plurality of bolts 15 are respectively inserted into the through holes on the corresponding ring plate II 6 and the through holes on the driving wheel 17 and then tightened in the threaded holes of the reducer 18, so that the protective cover body 2, the driving wheel 17 and the reducer 18 are fixed together; the distance from the outer axial surface of the ring plate II 6 to the outer edge of the ring plate I 5 is not less than the thickness of the head of the bolt 15, so that the bolt 15 is completely in the protective cover body 2.
[0039] It should be noted that a groove is provided on the outer radial surface of the ring plate III 7 below the through hole of the ring plate II 6 , and a sleeve is placed in the groove for fastening the bolt 15 .
[0040] Further solutions, such as Figure 3 , Figure 4 , Figure 6 As shown, each through hole on the ring plate II 6 is provided with a sleeve 12 which is coaxially arranged therewith and extends toward the driving wheel 17 , and plays a role in installing and positioning the bolt 15 .
[0041] Further solutions, such as Figure 3 , Figure 4 As shown, four mounting plates 11 are evenly spaced along the circumferential direction on the inner radial surface of the ring plate V10, and each mounting plate 11 is provided with an axial threaded hole; the sealing plate device 3 as a whole is a circular plate structure with an outer diameter not less than the inner diameter of the ring plate V10, and the sealing plate device 3 is provided with a plurality of through holes corresponding to the threaded holes one by one; a plurality of bolts 4 are respectively inserted into the corresponding through holes and then tightened in the threaded holes of the mounting plate 11 to fix the sealing plate device 3 on the ring plate V10.
[0042] Further solutions, such as Figure 2 , Figure 3 As shown, four ribs 8 are evenly spaced along the circumferential direction at the connection between the outer axial surface of the ring plate II 6 and the outer radial surface of the ring plate III 7 , which enhance the rigidity and strength of the protective cover body 2 .
[0043] The above-mentioned sealing device is further described below.
[0044] like Figure 5 As shown, the sealing plate device 3 is composed of a sealing plate 13 and a handle 14 located on the outer axial surface of the sealing plate 13; the sealing plate 13 is also provided with at least one weight-reducing hole.
[0045] The installation and use method of the utility model: Figure 1 , Figure 2 , Figure 6 As shown, the sealing plate device 3 is connected and fixed on the protective cover main body 2 by four bolts 4 to form a reducer protection device 1 with a centrally symmetrical structure. The reducer protection device 1 is fixed together with the original threaded holes of the reducer 18 by four bolts 5. When the tracked vehicle is moving, the reducer protection device 1 rotates synchronously with the reducer 18 and the driving wheel 17, which can not only prevent the reducer 18 from being hit by large external objects, but also effectively protect the mounting bolts of the driving wheel 17.
[0046] like Figure 1 As shown, the utility model also provides a tracked engineering vehicle, including a drive system formed by a reducer 18, a driving wheel 17, and a hydraulic motor, a longitudinal beam 16, and a track. When the vehicle is moving, the hydraulic motor drives the reducer 18 to rotate, and then drives the driving wheel 17 to rotate, so as to achieve the purpose of the drive system driving the vehicle to move. A reducer guard 1 is provided on the drive system; the reducer 18, the driving wheel 17, and the reducer guard 1 are fixed together by multiple bolts 15. When the tracked vehicle is moving, the reducer guard 1 can rotate with the driving wheel 17 and the reducer 18, and together constitute a rotatable motion system.
[0047] In summary, the utility model can effectively protect the reducer of the tracked vehicle drive system, preventing large external objects such as stones from directly hitting or falling on the reducer, causing damage to the reducer components. The utility model can effectively protect the installation and fixing bolts of the drive wheel in the tracked vehicle drive system, preventing external objects from hitting the bolt head and causing damage to it. The utility model adopts an assembled structural design, and the sealing plate device is detachable. During the installation process, it not only has the advantage of reducing the weight of the device itself, but also facilitates the maintenance and inspection of the reducer in the later stage.
[0048] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.
[0049] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.
[0050] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.
Claims
1. A reducer protection device, characterized in that: include: The protective cover body is a cylindrical structure, which is mounted on the outer axial surface of the drive system formed by the reducer and the drive wheel, and can rotate with the drive system to achieve radial protection of the reducer; The sealing plate device is assembled on the outer opening axial surface of the protective cover body to realize the protection of the reducer in the axial direction.
2. A reducer protection device according to claim 1, characterized in that: The protective cover body is a stepped cylindrical structure, and its outer diameter gradually decreases from the driving system to the outside.
3. A reducer protection device according to claim 2, characterized in that: The protective cover body is formed by welding the first cylindrical structure, the second cylindrical structure and the third cylindrical structure or by integrally casting the three.
4. A reducer protection device according to claim 3, characterized in that: The first cylindrical structure is formed by welding a ring plate I having a wide radial circumference and a ring plate II having a wide axial circumference or by integrally casting the two; The second cylindrical structure is formed by welding a ring plate III having a wide radial circumference and a ring plate IV having a wide axial circumference or by integrally casting the two; The third cylindrical structure is composed of a ring plate V having a wide radial circumference; The ring plate III is connected to the ring plate II, the ring plate V is connected to the ring plate IV, and the first, second and third cylindrical structures are connected in a coaxial manner to form the stepped cylindrical structure.
5. A reducer protection device according to claim 4, characterized in that: The ring plate II is fixed in the inner ring of the ring plate I, and a plurality of axial through holes are evenly spaced along the circumferential direction on the ring plate II; A plurality of bolts are respectively inserted into the through holes on the corresponding ring plate II and the through holes on the driving wheel and then tightened into the threaded holes of the reducer to fix the protective cover body, the driving wheel and the reducer together; The distance from the outer axial surface of the ring plate II to the outer edge of the ring plate I is not less than the thickness of the bolt head, so that the bolt is completely located in the protective cover body.
6. A reducer protection device according to claim 5, characterized in that: Each through hole on the ring plate II is provided with a sleeve which is coaxially arranged therewith and extends toward the driving wheel, so as to play a role in installing and positioning the bolts.
7. A reducer protection device according to claim 4, characterized in that: A plurality of mounting plates are evenly spaced along the circumferential direction on the inner radial surface of the ring plate V, and each mounting plate is provided with an axial threaded hole; The sealing plate device as a whole is a circular plate structure with an outer diameter not less than the inner diameter of the ring plate V, and the sealing plate device is provided with a plurality of through holes corresponding to the threaded holes one by one; A plurality of bolts are respectively inserted into corresponding through holes and then screwed into the threaded holes of the mounting plate to fix the sealing plate device on the ring plate V.
8. A reducer protection device according to claim 4, characterized in that: A plurality of ribs are evenly spaced along the circumferential direction at the connection between the outer axial surface of the ring plate II and the outer radial surface of the ring plate III.
9. A reducer protection device according to claim 1, characterized in that: The sealing plate device is composed of a sealing plate and a handle located on the outer axial surface of the sealing plate; and at least one weight-reducing hole is also provided on the sealing plate.
10. A crawler-type engineering vehicle, comprising a drive system formed by a reducer and a drive wheel, characterized in that: It also includes the reducer protection device according to any one of claims 1 to 9; the reducer, the drive wheel and the reducer protection device are fixed together by multiple bolts to form a rotatable motion system.