Loader cab assembling seat structure

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a loader cab assembly seat structure which comprises a cab bottom frame, the cab bottom frame is a rectangle formed by alternately connecting two frame cross beams and two frame longitudinal beams, and the cab bottom frame is additionally provided with a plurality of connecting cross beams and connecting longitudinal beams. U-shaped assembling seats are fixedly connected to the two ends of the frame cross beam, one end of each assembling seat is fixedly connected with the inner side face of the frame cross beam, the other end of each assembling seat is connected with the top face of the connecting cross beam, and a reinforcing plate fixedly connected with one side of each assembling seat is provided with a positioning clamping corner which is clamped and pressed on the frame longitudinal beam, so that good positioning can be achieved, and meanwhile the connecting area is greatly increased; therefore, the connection strength is greatly improved, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a loader cab assembly seat structure. Background Art

[0002] The cab of construction machinery is the space where operators work and move around. It should have a safe and comfortable environment to facilitate operators to work efficiently and reliably. During the design process, the structural layout of the cab assembly seat and the reliability of the mounting structure directly affect the safety of driving. The cab assembly seat mounting structure is an important part of the cab. It is used to fix the cab to the frame and support the cab. The assembly seat structure directly affects the fatigue life of the cab. At present, the loader cab assembly seat structure is mostly a U-shaped structure, which is directly located at the center line of the bottom frame beam of the cab for welding. During the welding process, it is easy to cause problems such as inaccurate positioning and insufficient welding strength. This kind of problem urgently needs to be improved and solved with a new structural design. Utility Model Content

[0003] The utility model aims to provide a loader cab assembly seat structure to solve the problems raised in the above background technology.

[0004] A loader cab assembly seat structure comprises a cab bottom frame, wherein the cab bottom frame is formed by two frame cross beams and two frame longitudinal beams alternately connected to form a rectangle, two frame cross beams are fixedly connected to two mutually parallel connecting longitudinal beams, a plurality of connecting cross beams are fixedly connected between the two connecting longitudinal beams and the frame longitudinal beams adjacent thereto, both ends of the frame cross beams are fixedly connected to an assembly seat, the assembly seat is a U-shaped structure, the assembly seat comprises a connecting bottom plate and two connecting side plates, the two connecting side plates are respectively a first connecting side plate and a second connecting side plate, the length of the first connecting side plate is greater than the length of the second connecting side plate, the first connecting side plate is fixedly connected to the inner side surface of the frame cross beam, the second connecting side plate is fixedly connected to the top end surface of the adjacent connecting cross beam, a reinforcing plate is provided on a side of the connecting side plate close to the frame longitudinal beam, which are respectively a first reinforcing plate fixedly connected to the first connecting side plate and a second reinforcing plate fixedly connected to the second connecting side plate, a positioning angle is provided on the first reinforcing plate, and the positioning angle is engaged with the frame longitudinal beam.

[0005] Preferably, the reinforcing plate as a whole is in the shape of a right-angled trapezoid inverted on its side, the bottom edge of the first reinforcing plate is flush with the bottom surface of the first connecting side plate, and its horizontal height is lower than the top surface height of the frame crossbeam, the bottom surface of the second reinforcing plate coincides with the bottom surface of the second connecting side plate, and the bottom surface of the second reinforcing plate coincides with the top surface of the connecting crossbeam, the first ends of the two reinforcing plates are connected to the connecting side plates, the second end of the second reinforcing plate is located above the frame longitudinal beam, and the second end of the first reinforcing plate is provided with the positioning angle.

[0006] Preferably, the second connecting side plate is fixedly connected to the center line position of the connecting cross beam.

[0007] Preferably, the connection between the connecting bottom plate and the connecting side plate is a rounded connection.

[0008] Furthermore, a connecting hole is provided on the connecting bottom plate.

[0009] Preferably, the width of the connecting side plate is equal to the width of the connecting bottom plate, and the width of the reinforcing plate is equal to the width of the connecting side plate.

[0010] Preferably, the assembly seat is fixedly connected to the frame cross beam by welding, and the assembly seat is fixedly connected to the connecting cross beam by welding.

[0011] Preferably, the assembly seat is formed by stamping and bending at one time.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model changes the original connection method in which the assembly seat is fixed in the middle of the truss beam, and the assembly seat adopts a structure with a wider connecting base plate, and the connecting base plate is fixedly connected to the frame beam and the connecting beam through two connecting side plates of different lengths, so that the connection of the assembly seat has a certain span, and its connection is more firm. At the same time, the first connecting side plate of the two connecting side plates is fixedly connected to the frame beam from the side. Compared with the traditional connection method, its fixing area is larger, thereby making the connection strength higher. A positioning angle that is engaged with the frame longitudinal beam is provided on the first reinforcing plate in the assembly seat. The positioning angle combined with the first connecting side plate can position the assembly seat in the horizontal direction, and the positioning angle combined with the second connecting side plate can position the assembly seat in the vertical direction. The overall combination can achieve precise positioning of the assembly seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall structure of the assembly seat in the utility model;

[0015] Figure 3 It is a partial connection schematic diagram of the assembly seat in the utility model.

[0016] In the figure: 1. bottom frame of the cab; 11. frame crossbeam; 12. frame longitudinal beam; 13. connecting crossbeam; 14. connecting longitudinal beam; 2. assembly seat; 21. connecting bottom plate; 22. connecting side plate; 221. first connecting side plate; 222. second connecting side plate; 23. reinforcing plate; 231. first reinforcing plate; 232. second reinforcing plate; 24. positioning angle; 25. connecting hole. DETAILED DESCRIPTION

[0017] The following will be combined with specific embodiments and attached Figure 1-3 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0018] A loader cab assembly seat 2 structure includes a cab bottom frame 1, wherein the cab bottom frame 1 is a rectangular frame structure formed by alternating two frame cross beams 11 and two frame longitudinal beams 12, two frame cross beams 11 are fixedly connected with two mutually parallel connecting longitudinal beams 14, the two connecting longitudinal beams 14 are symmetrically arranged, and the two connecting longitudinal beams 14 are equidistant from the adjacent frame longitudinal beams 12, two connecting cross beams 13 are fixedly connected to the connecting longitudinal beams 14, one end of the connecting cross beam 13 is fixedly connected to the connecting longitudinal beam 14, and the other end of the connecting cross beam 13 is fixedly connected to the adjacent frame longitudinal beam 12, and the arrangement of the connecting cross beam 13 and the connecting longitudinal beam 14 can strengthen the structural strength of the rectangular frame structure.

[0019] Both ends of the frame crossbeam 11 are fixedly connected with an assembly seat 2, that is, the four corners of the rectangular bottom frame 1 of the cab are provided with an assembly seat 2, and the assembly seat 2 is a U-shaped structure. The assembly seat 2 includes a connecting bottom plate 21 and two connecting side plates 22 arranged on both sides of the connecting bottom plate 21. The two connecting side plates 22 are respectively a first connecting side plate 221 and a second connecting side plate 222. The length of the first connecting side plate 221 is greater than the length of the second connecting side plate 222. The assembly seat 2 is formed by one-time bending by stamping, so that the connection between the connecting bottom plate 21 and the connecting side plate 22 is a rounded connection. The rounded structure can prevent stress concentration at the bending point, and prevent cracks from being generated here during use and causing breakage. The assembly seat 2 is fixedly connected to the bottom frame 1 of the cab in the form of a connecting bottom plate 21 on top, the outer side surface of the first connecting side plate 221 in the assembly seat 2 is fixedly connected to the inner side surface of the frame cross beam 11, and it is fixedly connected by welding, and the second connecting side plate 222 in the assembly seat 2 is fixedly connected to the top end surface of the adjacent connecting cross beam 13, and the assembly seat 2 can be positioned in the front and rear direction by the overlap of the bottom surface of the second connecting side plate 222 with the top surface of the connecting cross beam 13, and the overlap of the outer side surface of the first connecting side plate 221 with the inner side surface of the frame cross beam 11. A reinforcing plate 23 is provided on the side of the connecting side plate 22 close to the frame longitudinal beam 12, and the reinforcing plate 23 is in a sideways right-angled trapezoid as a whole, and is aligned with the first connecting side The first reinforcing plate 231 is fixedly connected to the plate 221, and the second reinforcing plate 232 is fixedly connected to the second connecting side plate 222. The bottom edge of the first reinforcing plate 231 is flush with the bottom surface of the first connecting side plate 221, and its horizontal height is lower than the top surface height of the frame cross beam 11, so that the side of the assembly seat 2 can have a larger connection area with the frame cross beam 11, thereby enhancing the connection strength between the assembly seat 2 and the bottom frame 1 of the cab. The bottom surface of the second reinforcing plate 232 coincides with the bottom surface of the second connecting side plate 222, and the bottom surface of the second reinforcing plate 232 coincides with the top surface of the connecting cross beam 13, and the connection position is located at the center line position of the connecting cross beam 13. The connection position is in the center, which can make the connecting The connection is more secure, the first ends of the two reinforcing plates 23 are connected to the connecting side plates 22, and the second end of the second reinforcing plate 232 extends to the top of the frame longitudinal beam 12. Because the bottom end of the first reinforcing plate 231 is lower than the top surface of the frame longitudinal beam 12, a positioning angle 24 is provided at the position where interference may occur. During assembly, the positioning angle 24 is just engaged with the frame longitudinal beam 12, and the engagement of the positioning angle 24 with the frame cross beam 11 can play a positioning role in the left and right directions. At the same time, the positioning angle 24 cooperates with the bottom end surface of the second connecting side plate 222 to position the assembly seat 2 in the vertical direction. The entire connection method of the assembly seat 2 is integrated to enable the assembly seat 2 to achieve precise spatial positioning, which is beneficial to the subsequent installation of the cab.The positioning angle 24 is a right-angle opening, and the positioning angle 24 is engaged with the inner side surface of the top surface side of the frame longitudinal beam 12 to facilitate positioning.

[0020] The width of the connecting side plate 22 is equal to that of the connecting bottom plate 21 , and the width of the reinforcing plate 23 is equal to that of the connecting side plate 22 , so that the reinforcing plate 23 facilitates positioning and enhances the connection strength without being overly redundant and causing a waste of cost.

[0021] A connection hole 25 is provided on the connection bottom plate 21 to facilitate subsequent connection and fixation with the cab by means of a bolt structure.

[0022] The fixed connection in the utility model adopts welding fixed connection, which is more firmly fixed, not easy to loosen and break, and is safer to use.

[0023] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0024] In the present utility model, "up", "down", "left", "right", "front" and "back" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0025] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

[0026] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0027] In the present utility model, "up", "down", "left", "right", "front" and "back" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0028] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A loader cab assembly seat structure, comprising a cab bottom frame, wherein the cab bottom frame is formed by two frame cross beams and two frame longitudinal beams alternately connected to form a rectangle, characterized in that: Two parallel connecting longitudinal beams are fixedly connected between the two frame cross beams, and a number of connecting cross beams are fixedly connected between the two connecting longitudinal beams and the adjacent frame longitudinal beams. Both ends of the frame cross beams are fixedly connected with assembly seats, and the assembly seats are U-shaped structures. The assembly seats include a connecting bottom plate and two connecting side plates, and the two connecting side plates are respectively a first connecting side plate and a second connecting side plate. The length of the first connecting side plate is greater than the length of the second connecting side plate. The first connecting side plate is fixedly connected to the inner side surface of the frame cross beam, and the second connecting side plate is fixedly connected to the top end surface of the adjacent connecting cross beam. A reinforcing plate is provided on the side of the connecting side plate close to the frame longitudinal beam, which are respectively a first reinforcing plate fixedly connected to the first connecting side plate and a second reinforcing plate fixedly connected to the second connecting side plate. A positioning angle is provided on the first reinforcing plate, and the positioning angle is engaged with the frame longitudinal beam.

2. A loader cab assembly seat structure according to claim 1, characterized in that: The reinforcing plate is in the shape of a right-angled trapezoid inverted on its side as a whole, the bottom edge of the first reinforcing plate is flush with the bottom surface of the first connecting side plate, and its horizontal height is lower than the top surface height of the frame crossbeam, the bottom surface of the second reinforcing plate coincides with the bottom surface of the second connecting side plate, and the bottom surface of the second reinforcing plate coincides with the top surface of the connecting crossbeam, the first ends of the two reinforcing plates are connected to the connecting side plates, the second end of the second reinforcing plate is located above the frame longitudinal beam, and the second end of the first reinforcing plate is provided with the positioning angle.

3. The loader cab assembly seat structure according to claim 1, characterized in that: The second connecting side plate is fixedly connected to the center line position of the connecting crossbeam.

4. The loader cab assembly seat structure according to claim 1, characterized in that: The connection between the connecting bottom plate and the connecting side plate is a rounded connection.

5. The loader cab assembly seat structure according to claim 4, characterized in that: The connecting bottom plate is provided with a connecting hole.

6. The loader cab assembly seat structure according to claim 1, characterized in that: The width of the connecting side plate is equal to the width of the connecting bottom plate, and the width of the reinforcing plate is equal to the width of the connecting side plate.

7. The loader cab assembly seat structure according to claim 1, characterized in that: The assembly seat is fixedly connected to the frame cross beam by welding, and the assembly seat is fixedly connected to the connecting cross beam by welding.

8. The loader cab assembly seat structure according to claim 1, characterized in that: The assembly seat is formed by one-time bending through stamping.

Images