Bulldozer frame and bulldozer
By designing the closed structure of the bulldozer frame and using castings to reduce welds, the problems of insufficient structural strength and excessive welds in the prior art are solved, and higher structural strength and longer service life are achieved.
Patent Information
- Application Number
- CN202420615193.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-03-27
AI Technical Summary
When the existing bulldozer frame structure withstands high-horsepower bulldozer, the front-end structure is insufficient, which can easily lead to deformation, and too many welds lead to deformation of the steel plate, reducing the mechanical properties of the overall structure.
A bulldozer frame is designed, with its front end formed a closed structure through a connecting piece, and castings are used instead of plate welding to reduce the number of welds, and bending stress is reduced through the gap between the pivot and the rear axle box.
It improves the overall structural strength of the bulldozer frame, reduces the occurrence of deformation, extends the service life, and improves the reliability of the frame.
Smart Images
Figure CN222834975U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a vehicle frame, in particular to a bulldozer vehicle frame. In addition, the utility model also relates to a bulldozer. Background Art
[0002] Bulldozers are widely used in various construction projects such as open-pit mining, road and water conservancy and hydropower infrastructure construction. They are mainly responsible for moving accumulated soil, filling, digging canals and clearing. The frame is the basis for installing and supporting various parts and assemblies of the bulldozer, and is an important part connecting the fuselage and crawler tracks. During the operation of the bulldozer, in addition to bearing the weight of these parts and the dynamic loads they bear, the frame also has to bear considerable crawler working tension. In addition to the resistance of the ground acting on the crawler tracks, they are also subject to complex and heavy working loads of pulling, pressing, bending and twisting at the same time. Therefore, the structural strength of the bulldozer frame is very important for the bulldozer.
[0003] The bulldozer frame structure of the prior art is generally formed by welding a beam and a rear axle box. The beam is a box structure formed by welding plates. The box structure is only connected by a balance beam formed by welding plates. The rear axle box is a box structure welded together by plates and castings. However, these existing bulldozer frames generally have some technical problems: the front end of the frame beam is an open structure. If it is used for a bulldozer with too much horsepower, its structural strength is insufficient, which easily leads to deformation of the frame beam. Moreover, most parts of the frame are welded by plates, resulting in too many welds on the frame, which easily causes deformation of the steel plate, reduces the mechanical properties of the overall structure of the frame, and thus reduces the overall service life of the bulldozer.
[0004] In view of this, it is necessary to design a bulldozer frame that can overcome the above technical difficulties and effectively solve or alleviate the above technical defects. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a bulldozer frame, which improves the overall rigidity of the front end of the frame, is not easy to deform, improves the reliability of the frame, and prolongs the service life of the frame.
[0006] Furthermore, the technical problem to be solved by the utility model is to provide a bulldozer, the front end of the frame of the bulldozer has high overall rigidity and is not prone to deformation, thereby improving the reliability of the frame and extending the service life of the frame.
[0007] In order to solve the above technical problems, the utility model provides a bulldozer frame, which includes a left beam, a right beam and a connecting piece for connecting the front end of the left beam and the front end of the right beam, so that the front end of the bulldozer frame forms a closed structure.
[0008] Specifically, the connecting member includes a sleeve, a left support connected to the front end of the left beam, and a right support connected to the front end of the right beam, and two ends of the sleeve are respectively connected to the left support and the right support.
[0009] Preferably, the left support and the right support are both formed with mounting holes, and both ends of the sleeve extend into the mounting holes of the left support and the right support respectively.
[0010] Specifically, the bulldozer frame also includes a rear axle box and a pivot, the two ends of the rear axle box are respectively connected to the rear ends of the left beam and the right beam, a through hole is formed at the lower part of the rear axle box, and one end of the pivot passes through the through hole.
[0011] Preferably, the pivot and the through hole are arranged to be clearance-fitted.
[0012] Specifically, the bulldozer frame also includes a front connecting plate and a rear connecting plate for mounting an engine, a group of mutually symmetrical front connecting plates are arranged at the inner front parts of the left beam and the right beam, and a group of mutually symmetrical rear connecting plates are arranged at the inner rear parts of the left beam and the right beam.
[0013] Preferably, reinforcement plates are provided on both the front and rear sides of the front connecting plate and the rear connecting plate.
[0014] Preferably, the bulldozer frame further comprises a balance beam, and two ends of the balance beam are respectively connected to the middle portion of the left beam and the middle portion of the right beam.
[0015] Preferably, the left support, the right support, the rear axle box and the balance beam are all castings.
[0016] On the basis of the technical solutions of the above bulldozer frames, the utility model further provides a bulldozer, which includes the bulldozer frame described in any of the above technical solutions.
[0017] Through the above technical scheme, the front ends of the left beam and the right beam of the bulldozer frame of the utility model are connected by connecting parts, so that the front end of the bulldozer frame forms a closed structure. Compared with the bulldozer frame with traditional front-end development, the bulldozer frame of the present application has higher overall rigidity, reduces the occurrence of deformation, improves the reliability of the bulldozer frame, and extends the service life of the bulldozer frame.
[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a bulldozer frame according to a specific implementation mode of the utility model;
[0020] Figure 2 It is a structural schematic diagram of a beam of a bulldozer frame according to a specific implementation mode of the utility model;
[0021] Figure 3 It is a structural schematic diagram of a connecting member of a bulldozer frame according to a specific implementation mode of the utility model;
[0022] Figure 4 It is a structural schematic diagram of a rear axle box of a bulldozer frame according to a specific implementation manner of the utility model.
[0023] Description of Reference Numerals
[0024] 1 left beam 2 right beam
[0025] 3 sleeve 4 left support
[0026] 5Right support 6Rear axle box
[0027] 7 pivots 8 through holes
[0028] 9 front connecting plate 10 rear connecting plate
[0029] 11Balance beam 12Reinforcement plate DETAILED DESCRIPTION
[0030] The following is a further detailed description of the implementation of the utility model in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the utility model, but cannot be used to limit the scope of the utility model. The utility model can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
[0031] The utility model provides these embodiments to make the utility model thorough and complete, and fully express the scope of the utility model to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and the composition of the materials described in these embodiments should be interpreted as merely exemplary, rather than as a limitation.
[0032] It should be noted that, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0033] In addition, words such as “include” or “comprising” and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements.
[0034] It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected 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 the specific circumstances.
[0035] All terms used in the present invention have the same meanings as those understood by ordinary technicians in the field to which the present invention belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.
[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0037] like Figure 1 As shown, the bulldozer frame of the utility model includes a left beam 1, a right beam 2 and a connecting piece for connecting the front end of the left beam 1 and the front end of the right beam 2, so that the front end of the bulldozer frame forms a closed structure. Compared with the bulldozer frame with an open front end adopted in the prior art, the utility model strengthens the overall rigidity by setting the front end of the bulldozer frame as a closed structure, so that the bulldozer frame of the utility model can withstand greater force without deformation, so that the bulldozer frame of the utility model can be suitable for high-horsepower bulldozers and has higher reliability and longer service life.
[0038] As a specific implementation method, Figure 3 As shown, the connecting member includes a sleeve 3, a left support 4 connected to the front end of the left beam 1 and a right support 5 connected to the front end of the right beam 2, and the two ends of the sleeve 3 are respectively connected to the left support 4 and the right support 5, so that the connecting member composed of the left support 4, the right support 5 and the sleeve 3 can connect the front ends of the left beam 1 and the right beam 2, so that the front end of the bulldozer frame forms a closed structure to improve the overall structural strength of the bulldozer frame.
[0039] As a preferred embodiment, Figure 3As shown, both the left support 4 and the right support 5 are formed with mounting holes, and the two ends of the sleeve 3 extend into the mounting holes of the left support 4 and the right support 5 respectively. The mounting holes improve the overall structural strength of the connecting parts, making the connection between the sleeve 3 and the left support 4 and the connection between the sleeve 3 and the right support 5 more stable.
[0040] As a specific implementation method, Figure 1 and Figure 4 As shown, the bulldozer frame also includes a rear axle box 6 and a pivot 7. The two ends of the rear axle box 6 are respectively connected to the rear ends of the left beam 1 and the right beam 2, so that the rear axle box 6, the connecting member, the left beam 1 and the right beam 2 form a box structure with a closed front end, so that the bulldozer frame has a high overall structural strength. A through hole 8 is formed at the lower part of the rear axle box 6, one end of the pivot 7 passes through the through hole 8, and the two ends of the pivot 7 are used to connect the walking device of the bulldozer.
[0041] As a preferred embodiment, Figure 1 and Figure 4 As shown, the fitting relationship between the pivot 7 and the through hole 8 is a clearance fit, the pivot 7 is connected to the walking device, and the clearance fit of the pivot 7 and the through hole 8 in this embodiment enables the pivot 7 to swing independently, so that the impact load on the bulldozer frame is mainly borne by the pivot 7, reducing the bending stress at other positions of the bulldozer frame, thereby improving the reliability of the bulldozer frame.
[0042] As a specific implementation method, Figure 2 As shown, the bulldozer frame of this embodiment also includes a front connecting plate 9 and a rear connecting plate 10 for installing the engine. A group of mutually symmetrical front connecting plates 9 are arranged at the inner front part of the left beam 1 and the right beam 2, and a group of mutually symmetrical rear connecting plates 10 are arranged at the inner rear part of the left beam 1 and the right beam 2. Mounting holes are formed on the front connecting plates 9 and the rear connecting plates 10 for installing the engine. A plurality of mounting holes can be formed on the front connecting plates 9 and the rear connecting plates 10 so that the bulldozer frame can adapt to engines of different models.
[0043] As a preferred embodiment, Figure 2 As shown, reinforcing plates 12 are provided on both the front and rear sides of the front connecting plate 9 and the rear connecting plate 10 to strengthen the structural strength of the front connecting plate 9 and the rear connecting plate 10, prevent the engine from bending the front connecting plate 9 and the rear connecting plate 10, and improve the reliability of the bulldozer frame.
[0044] As a preferred embodiment, Figure 1 As shown, the bulldozer frame of this embodiment also includes a balance beam, and the two ends of the balance beam are respectively connected to the middle part of the left beam and the middle part of the right beam. The overall structural strength of the bulldozer frame is further strengthened by the balance beam. In some embodiments, the balance beam is a curved balance beam, which leaves enough installation space for the engine and other parts.
[0045] As a preferred embodiment, the left support 4, the right support 5, the rear axle box 6 and the balance beam 11 of the present application are all castings. Compared with the prior art bulldozer frame in which most parts are welded by plates, the bulldozer frame of the present application adopts castings for most parts, which greatly reduces the number of welds, avoids the risk of steel plate deformation due to too many welds and the problem of reduced mechanical properties of the overall structure of the bulldozer frame, thereby improving the service life of the bulldozer frame.
[0046] On the basis of the bulldozer frame mentioned in the above technical solution of the utility model, the utility model further provides a bulldozer, which includes the bulldozer frame mentioned in the present application, so that the front end of the frame of the bulldozer is a closed structure, has high structural strength, is not easy to deform, and has a long service life.
[0047] It can be seen from the above description that the advantages of the utility model are: first, the front end of the bulldozer frame of the utility model is a closed structure, which improves the overall structural strength of the bulldozer frame and extends the service life of the bulldozer frame; second, most of the parts of the bulldozer frame of the utility model are cast, so that the bulldozer frame has fewer welds, thereby reducing the influence of the welds on the mechanical properties of the overall structure of the bulldozer frame and effectively avoiding deformation of the steel plate; third, the pivot and the through hole on the rear axle box are clearance-matched, so that the impact load on the bulldozer frame is mainly borne by the pivot, reducing the bending stress on the rest of the bulldozer frame.
[0048] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.
[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.
[0050] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.
Claims
1. A bulldozer frame, characterized in that: The bulldozer frame comprises a left beam (1), a right beam (2), and a connecting piece for connecting the front end of the left beam (1) and the front end of the right beam (2), so that the front end of the bulldozer frame forms a closed structure. The connecting member comprises a sleeve (3), a left support (4) connected to the front end of the left beam (1), and a right support (5) connected to the front end of the right beam (2); the two ends of the sleeve (3) are respectively connected to the left support (4) and the right support (5); the left support (4) and the right support (5) are both formed with mounting holes; the two ends of the sleeve (3) respectively extend into the mounting holes of the left support (4) and the right support (5).
2. The bulldozer frame according to claim 1, characterized in that: It also includes a rear axle box (6) and a pivot (7), wherein two ends of the rear axle box (6) are respectively connected to the rear end of the left beam (1) and the rear end of the right beam (2), and a through hole (8) is formed at the lower part of the rear axle box (6), and one end of the pivot (7) passes through the through hole (8).
3. The bulldozer frame according to claim 2, characterized in that: The pivot (7) and the through hole (8) are arranged to be clearance-fitted.
4. The bulldozer frame according to claim 1, characterized in that: The invention also comprises a front connecting plate (9) and a rear connecting plate (10) for mounting an engine. A group of mutually symmetrical front connecting plates (9) are arranged at the inner front part of the left beam (1) and the right beam (2), and a group of mutually symmetrical rear connecting plates (10) are arranged at the inner rear part of the left beam (1) and the right beam (2).
5. The bulldozer frame according to claim 4, characterized in that: Reinforcement plates (12) are provided on both the front and rear sides of the front connecting plate (9) and the rear connecting plate (10).
6. The bulldozer frame according to claim 2, characterized in that: It also comprises a balance beam (11), the two ends of which are respectively connected to the middle part of the left beam (1) and the middle part of the right beam (2).
7. The bulldozer frame according to claim 6, characterized in that: The left support (4), the right support (5), the rear axle box (6) and the balance beam (11) are all castings.
8. A bulldozer, characterized in that: A bulldozer frame comprising the frame described in any one of claims 1 to 7.