Frame and working machine

Abstract

The utility model relates to the technical field of operation machinery, and discloses a frame and operation machinery. The frame structure comprises two longitudinal beams which are arranged at an interval; the upper cover plate is arranged between the tops of the rear sections of the two longitudinal beams in a covering manner; and the lower cover plate is arranged between the bottoms of the rear sections of the two longitudinal beams in a covering mode, and a cavity is defined by the rear sections of the two longitudinal beams, the upper cover plate and the lower cover plate. A cavity is defined by the rear sections of the two longitudinal beams, the upper cover plate and the lower cover plate, namely, the rear section of the frame structure is of an integral cavity structure, so that main stress parts of the frame structure are connected into a whole, torque dispersion is guaranteed, the torsion angle of a seat ring is greatly reduced, the anti-torsion and anti-bending performance of a frame is improved, the stability of the frame structure is greatly improved, and the service life of the frame structure is prolonged. The problems that the torque is too large and the torsion angle of the seat ring is too large due to a cross beam layout mode are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of operating machinery, in particular to a vehicle frame and an operating machinery. Background Art

[0002] At present, the integrated frame of some work machinery such as lifting machinery and aerial work machinery includes two longitudinal beams and several cross beams connected between the two longitudinal beams. The cross beam layout brings about excessive torque and excessive seat ring torsion angle, which affects the stability of the frame. Utility Model Content

[0003] In view of this, the present invention provides a vehicle frame and a working machine to solve the problems of excessive torque and excessive seat ring torsion angle caused by the beam layout in the prior art.

[0004] In the first aspect, the utility model provides a vehicle frame structure, comprising: two longitudinal beams, spaced apart; an upper cover plate, covering the tops of the rear sections of the two longitudinal beams; and a lower cover plate, covering the bottoms of the rear sections of the two longitudinal beams, wherein the rear sections of the two longitudinal beams, the upper cover plate and the lower cover plate form a cavity.

[0005] Beneficial effects: A cavity is formed by the rear sections of the two longitudinal beams, the upper cover plate and the lower cover plate, that is, the rear section of the frame structure is an integral cavity structure, so that the main force-bearing parts of the frame structure are connected into a whole, ensuring torque dispersion, greatly reducing the seat ring torsion angle, improving the frame's anti-torsion and anti-bending performance, and greatly improving the stability of the frame structure, effectively solving the problems of excessive torque and excessive seat ring torsion angle caused by the crossbeam layout.

[0006] In an optional embodiment, the frame structure further includes a seat ring support and a seat ring, the seat ring support is arranged on the upper cover plate, and the seat ring has a plurality of fixing holes for fixing the slewing bearing, and the plurality of fixing holes are located on the inner side of the outer circular surface of the seat ring support.

[0007] Beneficial Effects: The slewing bearing is connected to the mounting holes on the seat ring via several fasteners, allowing the fasteners to be completely hidden within the seat ring support, reducing welds and resulting in a simple and elegant overall appearance. Because the mounting holes are located on the inner side of the seat ring support, the seat ring support is larger, ensuring vehicle stability. This eliminates the need for reinforcement plates around the seat ring support, reduces the number of parts, and ultimately reduces vehicle weight.

[0008] In an optional embodiment, the frame structure further includes two front leg boxes, which are arranged on the two longitudinal beams, and the two front leg boxes are arranged up and down and crosswise.

[0009] Beneficial effect: When the front legs in the two front leg boxes are extended, the supporting span of the front legs is larger, ensuring the stability of the entire operating machine.

[0010] In an optional embodiment, an opening is formed on one side of the front leg box above the seat support, and a portion of the front leg box above is embedded in the opening so that the seat support is overlapped on the front leg box.

[0011] Beneficial Effects: Due to the increased outer diameter of the seat ring support, a portion of the seat ring support can be overlapped on top of the front leg box, transferring part of the loading force through the front leg box to the entire frame, solving the problem of concentrated center response force. Due to the dispersion of loading force, the stress between the seat ring support and the upper cover is reduced to within the allowable stress range of the material. The contact area between the seat ring support and the upper cover does not need to be additionally plated, which reduces the type and quantity of materials and facilitates production and transportation.

[0012] In an optional embodiment, the seat support is fixed to the front leg box.

[0013] Beneficial effect: ensuring the stability of the frame structure.

[0014] In an optional embodiment, the seat ring support is welded to the upper cover plate and welded to the upper front leg box.

[0015] Beneficial effects: Welding can improve the stability and sealing of the connection, thereby improving the overall stability of the frame structure.

[0016] In an optional embodiment, the seat ring support is formed by rolling.

[0017] Beneficial effect: There are no obvious creases on the outer surface of the seat ring support, and the overall appearance is simple and elegant.

[0018] In an optional embodiment, the seat ring is a flat plate.

[0019] Beneficial effects: simple structure and easy to process and manufacture.

[0020] In an optional embodiment, the fixing hole is a threaded hole.

[0021] Beneficial effect: The slewing bearing and the seat ring are fastened by a plurality of bolts, and the fixation is more firm and reliable.

[0022] In a second aspect, the present invention further provides a working machine, comprising: the above-mentioned frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A three-dimensional diagram of a vehicle frame according to an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A partial enlarged schematic diagram of the frame is shown.

[0026] Description of reference numerals:

[0027] 1. Stringer;

[0028] 2. Upper cover;

[0029] 3. Seat support;

[0030] 4. Seat ring;

[0031] 5. Front outrigger box;

[0032] 6. Rear outrigger box;

[0033] 7. Slewing bearing. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0035] The following combination Figure 1 and Figure 2 , describing the embodiments of the present utility model.

[0036] According to an embodiment of the present invention, on the one hand, a vehicle frame structure is provided, comprising: two longitudinal beams 1, an upper cover plate 2 and a lower cover plate, wherein the two longitudinal beams 1 are arranged at intervals; the upper cover plate 2 is arranged between the tops of the rear sections of the two longitudinal beams 1; the lower cover plate is arranged between the bottoms of the rear sections of the two longitudinal beams 1, and the rear sections of the two longitudinal beams 1, the upper cover plate 2 and the lower cover plate form a cavity.

[0037] The frame structure of this embodiment is formed by the rear sections of the two longitudinal beams 1, the upper cover plate 2 and the lower cover plate to form a cavity. That is, the rear section of the frame structure is an integral cavity structure, so that the main load-bearing parts of the frame structure are connected into a whole, ensuring torque dispersion, greatly reducing the torsion angle of the seat ring, improving the anti-torsion and anti-bending performance of the frame, and greatly improving the stability of the frame structure. This effectively solves the problems of excessive torque and excessive torsion angle of the seat ring caused by the crossbeam layout.

[0038] In related technologies, standard components such as the bolts connecting the slewing bearing to the seat ring are exposed, resulting in numerous welds and an unsightly overall vehicle structure. The loading forces of the work machine (including the load and the load-bearing capacity of the work platform) are concentrated entirely on the center return seat ring. To ensure vehicle stability while meeting the required safety factors for load-bearing components in construction machinery, the center return seat ring requires multiple reinforcement plates to disperse the stress caused by loading. This structural approach adds significant weight to the vehicle.

[0039] In order to solve the problem of too many welds and too many parts, in one embodiment, Figure 1 and Figure 2 As shown, the frame structure also includes a seat support 3 and a seat ring 4. The seat support 3 is mounted on the upper cover plate 2. The seat ring 4 has several fixing holes for securing the slewing bearing 7. These fixing holes are located inside the outer circumference of the seat support 3. The slewing bearing 7 is connected to the fixing holes on the seat ring 4 via several fasteners. These fasteners are completely hidden within the seat support 3, reducing welds and creating a simple and elegant overall appearance. Because the fixing holes are located inside the seat support 3, the seat support 3 is larger, ensuring the stability of the entire vehicle. This eliminates the need for reinforcement plates around the seat support 3, reduces the number of parts, and thus reduces the weight of the entire vehicle.

[0040] In one embodiment, Figure 1 and Figure 2 As shown, the frame structure also includes two front outrigger boxes 5, which are arranged on the two longitudinal beams 1. The two front outrigger boxes 5 are arranged up and down and cross-arranged. When the front outriggers in the two front outrigger boxes 5 are extended, the support span of the front outriggers is larger, ensuring the stability of the entire working machine.

[0041] In the related art, it is necessary to add plates to the plane load-bearing parts of the frame. However, the types and quantities of the added plates are too many, the structure is complicated, and it is difficult to identify and process them during production.

[0042] In order to solve the problem that the increase of the number of panels leads to a large number of types and quantities of panels, which is not conducive to standardization, difficult production identification, and complicated workshop welding procedures, in one embodiment, as shown in FIG. Figure 1 and Figure 2 As shown, the seat support 3 has an opening on one side of the upper front leg box 5. A portion of the upper front leg box 5 is inserted into the opening, allowing the seat support 3 to overlap the front leg box 5. Due to the increased outer diameter of the seat support 3, a portion of the seat support 3 can overlap the upper portion of the front leg box 5, transmitting part of the loading force through the front leg box 5 to the entire frame, thus solving the problem of concentrated center response force. Due to the dispersion of loading forces, the stress between the seat support 3 and the upper cover plate 2 is reduced to within the allowable stress range of the materials. No additional plate bonding is required at the contact point between the seat support 3 and the upper cover plate 2, reducing the number and quantity of materials and facilitating production and transportation.

[0043] In one embodiment, the seat support 3 is fixed to the front leg box 5 to ensure the stability of the frame structure.

[0044] Specifically, the seat ring support 3 is welded to the upper cover plate 2 and welded to the upper front leg box 5. Welding can improve the stability and sealing of the connection, thereby improving the overall stability of the frame structure.

[0045] In one embodiment, the seat ring support 3 is formed by rolling. The outer surface of the seat ring support 3 has no obvious creases, and the overall appearance is simple and elegant. It should be noted that rolling is a process using a rolling forming machine. The rolling forming machine is a conventional structure and will not be described in detail here.

[0046] In one embodiment, the seat ring 4 is a flat plate with a simple structure and is easy to manufacture.

[0047] In one embodiment, the fixing hole is a threaded hole, and the fastener is a bolt or the like. The slewing bearing 7 and the seat ring 4 are fastened by a plurality of bolts, and the fixation is more firm and reliable.

[0048] In one embodiment, Figure 1 As shown, the frame structure also includes two rear outrigger boxes 6, which are fixed to the ends of the rear sections of the two longitudinal beams 1. The two rear outrigger boxes 6 are arranged in parallel. During operation, the rear outriggers in the rear outrigger boxes 6 are extended to ensure the stability of the operating machine during operation.

[0049] According to an embodiment of the present invention, on the other hand, a working machine is provided, comprising: the above-mentioned frame structure.

[0050] In one embodiment, Figure 1 and Figure 2 As shown, the outer diameter of the seat ring support 3 is increased, so that the entire circle of bolts connecting the slewing bearing 7 and the seat ring 4 are completely hidden inside the seat ring support 3. The seat ring support 3 is rounded and formed in one step, with no obvious creases on the outer surface, reducing welds, and having a simple appearance and a generous shape. At the same time, due to the increase in the outer diameter of the seat ring support 3, part of the seat ring support 3 can be overlapped on the upper part of the front leg box 5, dispersing the load on the vehicle through other existing structures such as the legs, so that the stress can be reasonably transmitted and the problem of concentrated center response force can be solved. There is no need to set reinforcement plates and stickers on the frame structure, which simplifies the layout of the center return seat, simplifies the structure, reduces the types and quantities of materials, and facilitates production and transportation. It effectively solves the problems of too many parts caused by the setting of reinforcement plates and stickers, which is not conducive to standardization, difficult to identify in production, and complicated welding procedures in the workshop.

[0051] Furthermore, the seat ring 4 and seat ring support 3 are welded offline and delivered as a central support assembly. After the frame body and leg box are assembled, the central support assembly is partially welded to the front leg box 5 and the other part to the upper cover plate 2 according to the required dimensions. The slewing bearing 7 is then fixed to the threaded holes on the seat ring 4 using the corresponding number of bolts. The frame body includes two longitudinal beams 1, the upper cover plate 2, and the lower cover plate.

[0052] In the relevant technology, the frame includes a main frame and a subframe. The subframe includes two sub-longitudinal beams and a seat ring support arranged in the middle of the two sub-longitudinal beams. The two sub-longitudinal beams are connected by the seat ring support. The main force-bearing structure of the whole vehicle is the sub-longitudinal beam. Because the two sub-longitudinal beams are only connected at the center return, the force transmission effect is poor. During the lifting process of the vehicle, the force is applied on one side (the side with the heavy object), and the lifting force cannot be effectively dispersed to the whole vehicle, resulting in distortion of the stressed side and no obvious change on the unstressed side. During the long-term lifting process of the vehicle, the distortion of the frame will become a key issue affecting the service life of the whole vehicle.

[0053] In order to solve the above problems, in this embodiment, the frame structure is an integrated structure of the main frame and the subframe, and the rear section of the frame structure adopts an integral cavity structure, eliminating the subframe, simplifying the overall structure, enhancing the bending and torsion resistance, and improving the stability of the frame working state, thereby solving the problems of excessive torque and excessive seat ring torsion angle caused by the frame crossbeam layout.

[0054] Furthermore, operating machinery includes but is not limited to cranes, pump trucks, etc.

[0055] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A frame structure, characterized in that: include: Two longitudinal beams (1) are arranged at intervals; An upper cover plate (2) is provided between the tops of the rear sections of the two longitudinal beams (1); A lower cover plate is provided between the bottoms of the rear sections of the two longitudinal beams (1), and the rear sections of the two longitudinal beams (1), the upper cover plate (2) and the lower cover plate form a cavity; Two front leg boxes (5), the two front leg boxes (5) are arranged on the two longitudinal beams (1), and the two front leg boxes (5) are arranged up and down and crosswise; A seat ring support (3) is provided on the upper cover plate (2); the seat ring support (3) is provided with an opening on one side of the upper front leg support box (5), and a portion of the upper front leg support box (5) is embedded in the opening so that the seat ring support (3) overlaps the front leg support box (5).

2. The frame structure according to claim 1, characterized in that: The frame structure further comprises a seat ring (4), wherein the seat ring (4) has a plurality of fixing holes for fixing the slewing bearing (7), and the plurality of fixing holes are located on the inner side of the outer circular surface of the seat ring support (3).

3. The frame structure according to claim 2, characterized in that: The seat ring support (3) is fixed on the front leg box (5).

4. The vehicle frame structure according to claim 3, characterized in that: The seat ring support (3) is welded to the upper cover plate (2) and to the upper front leg box (5).

5. The vehicle frame structure according to any one of claims 1 to 4, characterized in that: The seat ring support (3) is formed by rolling.

6. The vehicle frame structure according to any one of claims 1 to 4, characterized in that: The seat ring (4) is a flat plate.

7. The vehicle frame structure according to any one of claims 2 to 4, characterized in that: The fixing hole is a threaded hole.

8. A working machine, characterized in that: include: The vehicle frame structure according to any one of claims 1 to 7.

Images