Mining excavator cab top bearing beam

Abstract

The utility model discloses a mining excavator cab top bearing beam which comprises an excavator cab body, a supporting assembly is arranged between the excavator cab body and a top bearing longitudinal beam and between the excavator cab body and a top bearing cross beam, a crumple assembly is arranged in the supporting assembly, and the crumple assembly is fixedly connected with a first reinforcing piece. The top bearing longitudinal beam and the top bearing cross beam are fixedly connected through a first reinforcing piece, the connecting stability of the connecting position of the top bearing longitudinal beam and the top bearing cross beam is better, the connecting stability between the top bearing longitudinal beam and the supporting frame and the connecting stability between the top bearing cross beam and the supporting frame are better through a second reinforcing piece which is fixedly connected, and the supporting frame has the crumple energy absorption capacity by forming a plurality of second crumple through holes and third crumple through holes. And the formed first crumple through hole enables the supporting seat to have crumple energy absorption capacity, so that the situation that when the top bearing longitudinal beam and the top bearing cross beam are collided by rolling ores, the top of the excavator cab body is directly subjected to large impact force, and deformation damage is caused is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator cab technical field, concretely is a top bearing beam of mine excavator cab. BACKGROUND

[0002] The mine excavator cab is usually called "operation room" or "cockpit", and is the main place for the excavator operator to carry out excavation, loading and other operations.

[0003] In the prior art, the excavator cab with publication number "CN202530497U" can prevent the falling ore from hitting the main body of the cab, thereby avoiding damage to the cab and personal safety.

[0004] However, the above technical solution and the prior art have the following defects:

[0005] Although the excavator cab can shield the falling ore by the installed top protective cover, the top protective cover and the main body of the cab are hard connected through the mounting seat. In actual use, the impact force is directly transmitted to the top of the main body of the cab through the mounting seat when the top protective cover is hit by the rolling stone, which causes deformation and damage to the top of the main body of the cab. Not only can the impact force not be well absorbed, but also the maintenance cost of the main body of the cab is further increased, and the protection effect needs to be improved. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a top bearing beam of mine excavator cab to solve the problems in the background art.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] A top bearing beam of mine excavator cab, comprising an excavator cab body, a top bearing longitudinal beam and a top bearing cross beam, the excavator cab body is fixedly connected with a plurality of top bearing longitudinal beams, a plurality of top bearing cross beams are fixedly connected between the plurality of top bearing longitudinal beams, a support assembly is arranged between the excavator cab body and the top bearing longitudinal beam and the top bearing cross beam, and the support assembly is used for supporting and fixing the top bearing longitudinal beam and the top bearing cross beam, a collapse assembly is arranged inside the support assembly, and the collapse assembly enables the support assembly to have collapse energy absorption capacity.

[0009] Preferably, the support assembly comprises a top reinforcing plate, a support base and a support frame, the top reinforcing plate is installed on the top of the excavator cab body, a plurality of support bases are fixedly connected to the upper end surface of the top reinforcing plate, and the support frame is fixedly connected to the upper end surface of the support base.

[0010] Preferably, the collapse assembly comprises a first collapse through hole, a second collapse through hole and a third collapse through hole, the first collapse through hole is symmetrically arranged on the left and right sides and the front and rear sides of the annular side surface of the support base, a plurality of second collapse through holes are arranged on the outer wall of the support frame, and a plurality of third collapse through holes are arranged on the inner wall of the support frame.

[0011] Preferably, the first reinforcing plate is fixedly connected to the connection position of the top bearing longitudinal beam and the top bearing cross beam, and the second reinforcing plate is fixedly connected to the connection position of the support frame, the top bearing longitudinal beam and the top bearing cross beam.

[0012] Preferably, the bottom end surface of the top reinforcing plate is provided with a buffer pad, and the buffer pad is made of polystyrene foam plastic, and the area of the buffer pad is the same as that of the top reinforcing plate.

[0013] Preferably, the support base is in a cylindrical shape, and a plurality of support bases are arranged at equal intervals, and the support frame is in a hollow structure.

[0014] Preferably, the top reinforcing plate is provided with mounting through holes on the left and right sides and the front and rear sides inside the top reinforcing plate, and the top bearing longitudinal beam and the top bearing cross beam are in a hollow structure.

[0015] Compared with the prior art, the excavator cab body has the following beneficial effects:

[0016] 1. By installing the top reinforcing plate, the support frame can be supported by the support base, so as to support the plurality of top bearing longitudinal beams and the top bearing cross beams, the first reinforcing plate is fixedly connected, the connection stability of the top bearing longitudinal beam and the top bearing cross beam is better, the second reinforcing plate is fixedly connected, the connection stability between the top bearing longitudinal beam, the top bearing cross beam and the support frame is better, and the protection strength of the top bearing longitudinal beam and the top bearing cross beam is improved.

[0017] 2. By arranging a plurality of second collapse through holes and third collapse through holes, the support frame has the collapse energy absorption capacity, can absorb most of the impact force generated when the top bearing longitudinal beam and the top bearing cross beam are bumped, the first collapse through hole arranged on the support base also has the collapse energy absorption capacity, so that the support base can absorb most of the bumping impact force transmitted from the support frame, and the buffer pad can also absorb part of the impact force transmitted from the top reinforcing plate, thereby avoiding that the top bearing longitudinal beam and the top bearing cross beam are directly subjected to a large impact force and deformed and damaged when the excavator cab body top is bumped by rolling ore, and the protection effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a structural diagram of the support assembly and the collapse assembly in the present utility model;

[0020] Figure 3 It is a front cross-sectional view of the support assembly and the collapse assembly in the present invention;

[0021] Figure 4 This is a structural diagram of the support frame in the present utility model;

[0022] Figure 5 This is a structural diagram of the top reinforcement plate and support seat in the utility model.

[0023] In the figure: 1. Excavator cab body; 2. Top load-bearing longitudinal beam; 3. Top load-bearing crossbeam; 41. Top reinforcement plate; 42. Support seat; 43. Support frame; 44. First reinforcement plate; 45. Second reinforcement plate; 46. Mounting through hole; 51. Buffer pad; 52. First collapse through hole; 53. Second collapse through hole; 54. Third collapse through hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1-5 , the utility model provides a technical solution:

[0026] Example 1:

[0027] A top load-bearing beam for a mining excavator cab comprises an excavator cab body 1, a top load-bearing longitudinal beam 2 and a top load-bearing cross beam 3. A plurality of top load-bearing longitudinal beams 2 are fixedly connected to the top of the excavator cab body 1, and a plurality of top load-bearing cross beams 3 are fixedly connected between the plurality of top load-bearing longitudinal beams 2. The top load-bearing longitudinal beams 2 and the top load-bearing cross beams 3 are both hollow structures. The plurality of top load-bearing longitudinal beams 2 and the top load-bearing cross beams 3, all of which are hollow structures, can not only protect the top of the excavator cab body 1 but also have a light weight.

[0028] The support assembly is arranged between the excavator cab body 1 and the top bearing longitudinal beam 2 and the top bearing cross beam 3, and is used for supporting and fixing the top bearing longitudinal beam 2 and the top bearing cross beam 3. The support assembly is internally provided with a collapse assembly, and the collapse assembly enables the support assembly to have a collapse energy absorption capacity, so as to avoid that the impact force received by the top bearing longitudinal beam 2 and the top bearing cross beam 3 is directly transmitted to the top of the excavator cab body 1.

[0029] The support assembly comprises a top reinforcing plate 41, a support seat 42 and a support frame 43. The top reinforcing plate 41 is arranged on the top of the excavator cab body 1, and can not only support and fix the plurality of support seats 42, but also further improve the strength of the top of the excavator cab body 1. The plurality of support seats 42 are fixedly connected to the upper end surface of the top reinforcing plate 41, and are arranged at equal intervals. The support seat 42 is in a cylindrical shape, and is connected to the top reinforcing plate 41 and the support frame 43 by welding. The support seat 42 which is arranged at equal intervals and in a cylindrical shape can not only stably support the support frame 43, but also has a light self-weight.

[0030] The support frame 43 is fixedly connected to the upper end surface of the support seat 42, and is in a hollow structure. The support frame 43 is connected to the top bearing longitudinal beam 2 and the top bearing cross beam 3 by welding. The support frame 43 which is in a hollow structure can not only support and fix the top bearing longitudinal beam 2 and the top bearing cross beam 3, but also has a light self-weight. The top reinforcing plate 41 is internally provided with mounting through holes 46 arranged on the left and right sides and the front and back sides. High-strength bolts (not shown) are arranged in the mounting through holes 46. Figure 1 The high-strength bolts and the mounting through holes 46 facilitate the disassembly and replacement of the top reinforcing plate 41 by the later workers.

[0031] The first reinforcing sheet 44 is fixedly connected to the connection position of the top bearing longitudinal beam 2 and the top bearing cross beam 3, and is connected to the top bearing longitudinal beam 2 and the top bearing cross beam 3 by welding. The first reinforcing sheet 44 makes the connection of the top bearing longitudinal beam 2 and the top bearing cross beam 3 more stable. The second reinforcing sheet 45 is fixedly connected to the connection position of the support frame 43, the top bearing longitudinal beam 2 and the top bearing cross beam 3, and is connected to the support frame 43, the top bearing longitudinal beam 2 and the top bearing cross beam 3 by welding. The second reinforcing sheet 45 makes the connection between the support frame 43, the top bearing longitudinal beam 2 and the top bearing cross beam 3 more stable.

[0032] Embodiment two:

[0033] On the basis of embodiment one, in this embodiment, by opening a plurality of second collapse through holes 53 and third collapse through holes 54, the support frame 43 has a collapse energy absorption capacity, which can absorb most of the impact force generated when the top bearing longitudinal beam 2 and the top bearing cross beam 3 are hit. The first collapse through hole 52 is opened to make the support seat 42 also have a collapse energy absorption capacity, so that the support seat 42 can absorb most of the impact force transmitted by the support frame 43.

[0034] The collapse assembly includes first collapse through holes 52, second collapse through holes 53 and third collapse through holes 54. The support seat 42 is symmetrically provided with first collapse through holes 52 on the left and right sides and the front and rear sides of the annular side surface. The first collapse through holes 52 make the support seat 42 have a collapse energy absorption capacity, so that the support seat 42 can absorb most of the impact force transmitted by the support frame 43. The support frame 43 is provided with a plurality of second collapse through holes 53 on the outer wall and a plurality of third collapse through holes 54 on the inner wall. The second collapse through holes 53 and the third collapse through holes 54 make the support frame 43 have a collapse energy absorption capacity, so that the kinetic energy deformation of the top bearing longitudinal beam 2 and the top bearing cross beam 3 when hit can absorb most of the impact force generated when hit.

[0035] The bottom end surface of the top reinforcing plate 41 is provided with a buffer pad 51, and the buffer pad 51 is made of polystyrene foam plastic. The area of the buffer pad 51 is the same as that of the top reinforcing plate 41, and the buffer pad 51 is made of polystyrene foam plastic, which has good mechanical strength and buffering performance. Therefore, it can buffer a part of the impact force transmitted by the top reinforcing plate 41, so as to avoid that the top of the excavator cab body 1 directly receives the impact force transmitted by the top reinforcing plate 41.

[0036] Working principle: through the installation of the top reinforcing plate 41, not only can the plurality of support seats 42 be supported and fixed, but also the strength of the top of the excavator cab body 1 can be further improved, and the plurality of support seats 42 fixedly connected can support and fix the support frame 43, so that the support frame 43 stably supports the plurality of top bearing longitudinal beams 2 and the top bearing cross beams 3, and the plurality of top bearing longitudinal beams 2 and the top bearing cross beams 3 can strengthen and protect the top of the excavator cab body 1, the first reinforcing sheet 44 fixedly connected makes the connection between the top bearing longitudinal beam 2 and the top bearing cross beam 3 more stable, and the second reinforcing sheet 45 fixedly connected makes the connection between the top bearing longitudinal beam 2, the top bearing cross beam 3 and the support frame 43 more stable; when the top bearing longitudinal beam 2 and the top bearing cross beam 3 are impacted by the ore from top to bottom, the plurality of second collapse through holes 53 and the third collapse through holes 54 opened make the support frame 43 have the collapse energy absorption capacity, so as to absorb most of the impact force generated when the top bearing longitudinal beam 2 and the top bearing cross beam 3 are impacted, and the first collapse through hole 52 opened makes the support seat 42 also have the collapse energy absorption capacity, so that the support seat 42 can absorb most of the impact force transmitted by the support frame 43, and the buffer pad 51 can also absorb part of the impact force transmitted by the top reinforcing plate 41, thereby avoiding that the top bearing longitudinal beam 2 and the top bearing cross beam 3 are directly subjected to a large impact force when the top of the excavator cab body 1 is impacted by the ore from top to bottom, so as to improve the anti-impact capacity of the top of the excavator cab body 1.

[0037] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A roof load bearing beam of a mining excavator cab comprising a cab body (1), a roof load bearing longitudinal beam (2) and a roof load bearing cross beam (3), characterized in that: The excavator cab body (1) top is fixedly connected with a plurality of top bearing longitudinal beams (2), a plurality of top bearing longitudinal beams (2) are fixedly connected with a plurality of top bearing cross beams (3) between them; The excavator cab body (1) is provided with a support assembly between the top bearing longitudinal beam (2) and the top bearing cross beam (3), and the support assembly is used for supporting and fixing the top bearing longitudinal beam (2) and the top bearing cross beam (3), the support assembly is provided with a collapse assembly inside, and the collapse assembly makes the support assembly have the collapse energy absorption capacity.

2. A roof beam for a cab of a mining excavator as claimed in claim 1, characterised in that: The support assembly includes a top reinforcing plate (41), a support seat (42) and a support frame (43), the excavator cab body (1) top is provided with a top reinforcing plate (41), a plurality of support seats (42) are fixedly connected to the top reinforcing plate (41) upper end surface, and a support frame (43) is fixedly connected to the support seat (42) upper end surface.

3. A mine excavator cab roof load carrying beam according to claim 2 characterised in that: The collapse assembly includes a first collapse through hole (52), a second collapse through hole (53) and a third collapse through hole (54), the support seat (42) annular side left and right sides and front and back sides are symmetrically provided with a first collapse through hole (52), a plurality of second collapse through holes (53) are provided on the outer wall of the support frame (43), and a plurality of third collapse through holes (54) are provided on the inner wall of the support frame (43).

4. A mine excavator cab roof load carrying beam according to claim 2 characterised in that: The top bearing longitudinal beam (2) and the top bearing cross beam (3) are fixedly connected with a first reinforcing sheet (44) at the connection, and the support frame (43) is fixedly connected with a second reinforcing sheet (45) at the connection with the top bearing longitudinal beam (2) and the top bearing cross beam (3).

5. A mine excavator cab roof load carrying beam according to claim 2 characterised in that: The top reinforcing plate (41) lower end surface is provided with a buffer pad (51), and the buffer pad (51) is made of polystyrene foam plastic, and the buffer pad (51) area is the same as the top reinforcing plate (41) area.

6. A mine excavator cab roof load carrying beam according to claim 2 characterised in that: The support seat (42) is cylindrical, and a plurality of support seats (42) are arranged at equal intervals, and the support frame (43) is a hollow structure.

7. A mine excavator cab roof load carrying beam according to claim 2 characterised in that: The top reinforcing plate (41) inside left and right sides and front and back sides are provided with mounting through holes (46), and the top bearing longitudinal beam (2) and the top bearing cross beam (3) are hollow structures.

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