Protective device for excavator cab

Abstract

The excavator cab protection device comprises a cab main framework, an escape door is arranged on one side of the cab main framework, and an escape window opposite to the escape door is arranged on the other side of the cab main framework. A front protection grating is arranged in front of the cab main framework, a third side protection net and a first lower sealing plate are arranged behind the cab main framework, a first side protection net and a cab small door are arranged on one side of the cab main framework, and a second side protection net and a second lower sealing plate are arranged on the other side of the cab main framework. The first side protection net is located on one side of the escape door, and the second side protection net is located on one side of the escape window. A frame type semi-closed structure is adopted, no glass is arranged, an escape door is arranged on one side of the cab main framework, an escape window is arranged on the other side of the cab main framework, and a reliable escape channel is guaranteed for a driver when the excavator is overturned. The front side bottom baffle is a totally-closed steel plate, a protective grating is arranged in front of the front side bottom baffle, side protective nets are arranged on the left rear portion, the right rear portion and the rear portion, and sufficient view is provided for a driver while high-quality protection is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to an excavator cab protection device. Background Art

[0002] Excavators are engineering machinery often used for excavation in mines, tunnels, rivers, and other areas. The materials excavated by excavators primarily include soil, coal, silt, and pre-loosened soil and rock. The design of the excavator cab, the driver's workspace, not only affects operator comfort and efficiency but also directly impacts the driver's safety and health. This is especially true in mine environments, where cramped spaces and the high risk of rockfall place even stricter demands on the cab's safety and protection. The low height of mines necessitates a controlled cab height.

[0003] Existing excavator cabs are enclosed spaces constructed from metal frames, thin panels, and glass. These enclosed spaces offer limited protection against impact damage, making them less effective in mines with a high probability of rockfall. Furthermore, these enclosed spaces make it difficult for occupants to escape if the excavator tips over. Utility Model Content

[0004] The purpose of the utility model is to provide an excavator cab protection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an excavator cab protection device, comprising a cab main frame, an escape door being arranged on one side of the cab main frame, and an escape window being arranged on the other side of the cab main frame opposite to the escape door.

[0006] Preferably, a front protective grille is arranged in front of the main frame of the cab, a third side guard net and a first lower cover plate are arranged behind the main frame of the cab, a first side guard net and a small cab door are arranged on one side of the main frame of the cab, and a second side guard net and a second lower cover plate are arranged on the other side of the main frame of the cab.

[0007] Preferably, the first side guard net is located on one side of the escape door, and the second side guard net is located on one side of the escape window.

[0008] Preferably, the main frame of the cab includes: a top plate and a supporting frame.

[0009] Preferably, the support frame includes a first frame, a second frame, a first straight rod, a second straight rod, a third straight rod, an oblique beam, a first cross beam, a second cross beam, a third cross beam, a fourth cross beam, a front bottom baffle, a bottom connecting plate, and a reinforcing gusset plate;

[0010] An oblique beam is provided between the first straight rod and the third straight rod;

[0011] The first side guard net is arranged above the oblique beam; the cab small door is rotatably connected to the first straight rod through a hinge;

[0012] The second side guard net is arranged above the first crossbeam, and the second lower cover plate is arranged below the first crossbeam;

[0013] The front protective grille is arranged above the front bottom baffle;

[0014] The third side guard net is arranged above the third crossbeam, and the first lower sealing plate is arranged below the third crossbeam.

[0015] Preferably, a reinforcing angular rib is welded at the welding point between the second cross beam and the first straight rod, a reinforcing angular rib is welded at the welding point between the second cross beam and the second straight rod, a reinforcing angular rib is welded at the welding point between the third cross beam and the first straight rod, and a reinforcing angular rib is welded at the welding point between the third cross beam and the second straight rod.

[0016] Preferably, two reinforcing ribs are welded at the welding point between the first frame and the third straight rod, a reinforcing rib is welded at the welding point between the first frame and the first straight rod, and a reinforcing rib is welded at the welding point between the inclined beam and the first straight rod;

[0017] A reinforcing rib plate is welded at a welding point between the second frame and the second straight rod, and a reinforcing rib plate is welded at a welding point between the first crossbeam and the second straight rod.

[0018] Preferably, bottom connecting plates are provided at the four corners of the bottom of the main frame of the cab; and the front bottom baffle is a fully enclosed steel plate.

[0019] Preferably, a sponge is provided below the support frame.

[0020] Preferably, the overall height of the cab is less than that of a standard machine cab.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] (1) As the working environment in mines is relatively harsh and the ground is uneven, the risk of excavators tipping over is high. Traditional excavator cabs are fully enclosed cabs, which makes it difficult for the driver to escape when tipping over occurs. This cab adopts a frame-type semi-enclosed structure without glass. An escape door is set on one side of the main frame of the cab and an escape window is set on the other side. Taking the driver's position as a reference, the left side is designed as an escape door, and a sufficient area of ​​escape window is left on the upper part of the right side. This ensures that the driver has a reliable escape channel when the excavator tips over, so that the driver can find an effective escape exit on both the left and right sides.

[0023] (2) The cab roof is made of thickened steel plate, which significantly enhances the cab's anti-smash performance, effectively preventing damage to the cab and driver from falling rocks in the mine, and improving operational safety. At the same time, the front bottom baffle is a fully enclosed steel plate, with a protective grille in the front and side guard nets on the left, right and rear, providing high-quality protection while providing the driver with ample vision.

[0024] (3) The overall height of the cab is 1346mm, which is 266mm lower than that of the standard machine cab, reducing the overall height of the machine to 2300mm, effectively reducing the occurrence of the excavator hitting the cab in low working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the excavator cab protection device of the present invention;

[0026] Figure 2 This is a schematic diagram of the main frame of the cab of the present invention;

[0027] Figure 3 This is a front view of the excavator cab protection device of the present invention;

[0028] Figure 4 This is a left side view of the excavator cab protection device of the present invention;

[0029] Figure 5 This is a right side view of the excavator cab protection device of the present invention;

[0030] In the figure: 1- main frame of the cab, 2- escape door, 3- escape window, 4- front protective grille, 5- first side guard net, 6- second side guard net, 7- third side guard net, 8- first lower cover plate, 9- second lower cover plate, 10- small door of the cab, 11- top plate, 12- first frame, 13- second frame, 14- first straight rod, 15- second straight rod, 16- third straight rod, 17- inclined beam, 18- first cross beam, 19- second cross beam, 20- third cross beam, 21- fourth cross beam, 22- front bottom baffle, 23- bottom connecting plate, 24- reinforced gusset plate, 25- sponge. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-5A cab protection device for an excavator includes a cab main frame 1, an escape door 2 is arranged on one side of the cab main frame 1, and an escape window 3 is arranged on the other side of the cab main frame 1 opposite to the escape door 2.

[0033] A front protective grille 4 is provided in front of the cab main frame 1, a third side guard net 7 and a first lower cover plate 8 are provided behind the cab main frame 1, a first side guard net 5 and a cab small door 10 are provided on one side of the cab main frame 1, and a second side guard net 6 and a second lower cover plate 9 are provided on the other side of the cab main frame 1. The first side guard net 5 is located on one side of the escape door 2, and the second side guard net 6 is located on one side of the escape window 3.

[0034] The main cab frame 1 comprises a top plate 11 and a supporting frame. The supporting frame includes a first frame 12, a second frame 13, a first straight bar 14, a second straight bar 15, a third straight bar 16, an inclined beam 17, a first crossbeam 18, a second crossbeam 19, a third crossbeam 20, a fourth crossbeam 21, a front bottom baffle 22, a bottom connecting plate 23, and reinforcing gussets 24. The top plate 11 is 8mm thick steel plate.

[0035] An oblique beam 17 is arranged between the first straight rod 14 and the third straight rod 16; the first side guard net 5 is arranged above the oblique beam 17; the cab small door 10 is connected to the first straight rod 14 by a hinge; the second side guard net 6 is arranged above the first cross beam 18, and the second lower cover plate 9 is arranged below the first cross beam 18; the front protective grille 4 is arranged above the front bottom baffle 22; the third side guard net 7 is arranged above the third cross beam 20, and the first lower cover plate 8 is arranged below the third cross beam 20, and the front bottom baffle 22 is a fully enclosed steel plate.

[0036] A diagonal beam 17 is provided between the first and third straight bars 14, 16. This diagonal support structure significantly enhances the lateral stability and torsional resistance of the cab's main frame. A first side guard net 5 is provided above the diagonal beam 17, providing protection on one side of the escape door 2 without obstructing the driver's vision.

[0037] The second side guard net 6 is located above the first crossbeam 18, providing protection for one side of the escape window 3, while the second lower sealing plate 9 is located below, closing unnecessary openings and enhancing overall protection.

[0038] The front protective grille 4 blocks the flying debris in front while ensuring ventilation and vision. The front bottom baffle 22 is a fully enclosed steel plate, which further enhances the protection capability of the front.

[0039] The third side guard net 7 is arranged above the third cross beam 20 to block the debris flying from the rear, and the first lower sealing plate 8 is arranged below the third cross beam 20 to further enhance the protection capability of the rear.

[0040] This cab features a frame-type, semi-enclosed structure without glass. For example, the driver's left side is designed as an escape door, and a sufficiently spacious escape window 3 is left in the upper right portion. This ensures a reliable escape route for the driver in the event of an excavator tipping, allowing the driver to find effective exits on both the left and right sides. The cab roof is constructed of 8mm thick steel plate, significantly enhancing the cab's anti-smash performance, effectively preventing damage to the cab and driver from falling rocks in the mine, and improving operational safety. Furthermore, the front bottom baffle 22 is a fully enclosed steel plate, with a front protective grille 4 in front and side guards on the left, right, and rear sides, providing high-quality protection while offering the driver ample visibility.

[0041] A reinforcing gusset plate 24 is welded at the welding point between the second cross beam 19 and the first straight rod 14 , a reinforcing gusset plate 24 is welded at the welding point between the second cross beam 19 and the second straight rod 15 , a reinforcing gusset plate 24 is welded at the welding point between the third cross beam 20 and the first straight rod 14 , and a reinforcing gusset plate 24 is welded at the welding point between the third cross beam 20 and the second straight rod 15 .

[0042] Two reinforcing ribs 24 are welded at the welding point between the first frame 12 and the third straight rod 16 , a reinforcing rib 24 is welded at the welding point between the first frame 12 and the first straight rod 14 , and a reinforcing rib 24 is welded at the welding point between the inclined beam 17 and the first straight rod 14 ;

[0043] A reinforcing gusset plate 24 is welded to the welding point between the second frame 13 and the second straight rod 15 , and a reinforcing gusset plate 24 is welded to the welding point between the first cross beam 18 and the second straight rod 15 .

[0044] Reinforced gusset plates 24 are used at multiple welding locations. The main function of the reinforced gusset plates 24 is to enhance the strength and rigidity of the welded joints, thereby improving the structural stability and load-bearing capacity of the entire cab protection device.

[0045] Bottom connecting plates 23 are provided at the four corners of the bottom of the main frame 1 of the cab.

[0046] Sponge 25 is installed beneath the support frame. This fills the gap between the cab and the cab platform, enhancing the overall appearance of the machine and securing the cab more securely to the base, reducing shaking and instability caused by excessive gaps. It also blocks and cushions the impact of debris, such as gravel and dirt, protecting the cab bottom from damage.

[0047] The cab is 1346mm tall, 266mm lower than the standard cab, bringing the overall height down to 2300mm. This effectively reduces the risk of the excavator bumping into the cab in low-slung environments.

[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An excavator cab protection device, characterized in that: It comprises a main frame of the cab, an escape door is arranged on one side of the main frame of the cab, and an escape window is arranged on the other side of the main frame of the cab opposite to the escape door; A front protective grille is arranged in front of the main frame of the cab, a third side guard net and a first lower cover plate are arranged behind the main frame of the cab, a first side guard net and a small cab door are arranged on one side of the main frame of the cab, and a second side guard net and a second lower cover plate are arranged on the other side of the main frame of the cab.

2. The excavator cab protection device according to claim 1, characterized in that: The first side guard net is located on one side of the escape door, and the second side guard net is located on one side of the escape window.

3. The excavator cab protection device according to claim 1, characterized in that: The main frame of the cab includes a top plate and a supporting frame.

4. The excavator cab protection device according to claim 3, characterized in that: The support frame includes a first frame, a second frame, a first straight bar, a second straight bar, a third straight bar, an oblique beam, a first cross beam, a second cross beam, a third cross beam, a fourth cross beam, a front bottom baffle, a bottom connecting plate, and a reinforcing gusset plate; An oblique beam is provided between the first straight rod and the third straight rod; The first side guard net is arranged above the oblique beam; the cab small door is rotatably connected to the first straight rod through a hinge; The second side guard net is arranged above the first crossbeam, and the second lower cover plate is arranged below the first crossbeam; The front protective grille is arranged above the front bottom baffle; The third side guard net is arranged above the third crossbeam, and the first lower sealing plate is arranged below the third crossbeam.

5. The excavator cab protection device according to claim 4, characterized in that: A reinforcing rib plate is welded at the welding point between the second cross beam and the first straight rod, a reinforcing rib plate is welded at the welding point between the second cross beam and the second straight rod, a reinforcing rib plate is welded at the welding point between the third cross beam and the first straight rod, and a reinforcing rib plate is welded at the welding point between the third cross beam and the second straight rod.

6. The excavator cab protection device according to claim 4, characterized in that: Two reinforcing ribs are welded at the welding point between the first frame and the third straight rod, a reinforcing rib is welded at the welding point between the first frame and the first straight rod, and a reinforcing rib is welded at the welding point between the inclined beam and the first straight rod; A reinforcing rib plate is welded at a welding point between the second frame and the second straight rod, and a reinforcing rib plate is welded at a welding point between the first crossbeam and the second straight rod.

7. The excavator cab protection device according to claim 4, characterized in that: The four corners of the bottom of the main frame of the cab are each provided with a bottom connecting plate; the front bottom baffle is a fully enclosed steel plate.

8. The excavator cab protection device according to claim 3, characterized in that: A sponge is arranged below the supporting frame.

9. The excavator cab protection device according to claim 1, characterized in that: The overall height of the cab is less than that of a standard machine cab.

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