Cab protection device and operation machine

Abstract

The utility model relates to the technical field of operation machinery, and discloses a cab protection device and operation machinery. The cab protection device comprises a first longitudinal beam, a second longitudinal beam and a first protection cover, the first longitudinal beam is suitable for being installed on one side of a front windshield of a cab, the second longitudinal beam is suitable for being installed on the other side of the front windshield of the cab, the first protection cover has a locking state and an opening state, and in the locking state, the opening state is opened. The second lug plate and the first lug plate are connected and locked through a pin shaft, and the first protective cover is arranged outside a front windshield of a cab in a covering mode. In the open state, the first protective cover is suitable for rotating around the first longitudinal beam. The first protective cover is switched from the locking state to the opening state, the first lug plate and the second lug plate are separated from the pin shaft and unlocked, at the moment, the first protective cover can rotate around the first longitudinal beam, and after the first protective cover is rotated to a proper angle, a front windshield can be directly cleaned.

Description

Technical Field

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

[0002] Operating machinery refers to mechanical equipment used in civil engineering, construction engineering, road engineering and other fields. It is mainly used for earth excavation, earth filling, transportation, compaction, leveling, concrete construction, pile foundation construction, lifting and hoisting, etc. Common operating machinery includes excavators, loaders, bulldozers, rollers, concrete mixers, cranes, etc.

[0003] In the prior art, there are certain safety hazards in operating machinery operating in harsh environments. In order to ensure the personal safety of the driver, a protective device is usually installed outside the front windshield of the cab. However, the current protective device is fixed on the cab. When cleaning the front windshield, the protective device needs to be removed first, and then the protective device is reinstalled on the cab after the front windshield is cleaned. This is inconvenient for cleaning the front windshield on the cab. Utility Model Content

[0004] In view of this, the utility model provides a cab protection device and an operating machine to solve the problem that the protection device is fixed on the cab, which makes it inconvenient to clean the front windshield on the cab.

[0005] In a first aspect, the utility model provides a cab protection device, comprising:

[0006] A first longitudinal beam, adapted to be mounted on one side of a front windshield of the cab;

[0007] A second longitudinal beam, suitable for being installed on the other side of the front windshield of the cab, wherein the second longitudinal beam is provided with a first ear plate;

[0008] A first protective cover, one side of which is rotatably disposed on the first longitudinal beam, the other side of the first protective cover is provided with a second ear plate corresponding to the position of the first ear plate, and the first protective cover has a locked state and an open state;

[0009] In the locked state, the second ear plate is connected and locked with the first ear plate through a pin shaft, and the first protective cover is arranged outside the front windshield of the cab; in the open state, the first protective cover is suitable for rotating around the first longitudinal beam.

[0010] Beneficial effects: This cab protection device installs the first longitudinal beam and the second longitudinal beam on opposite sides of the cab front windshield, respectively, and the first protective cover is rotatably arranged on the first longitudinal beam, so that the first protective cover has a locked state and an open state. During the operation of the operating machine, the first protective cover is in a locked state, at which time the first ear plate and the second ear plate are connected and locked by a pin shaft, and the first protective cover is arranged outside the cab front windshield to protect the cab, thereby ensuring the safety of the driver. If the front windshield needs to be cleaned, the first protective cover is switched from the locked state to the open state, so that the first ear plate and the second ear plate are separated from the pin shaft and unlocked, and the first protective cover can be rotated around the first longitudinal beam. After the first protective cover is rotated to a suitable angle, the front windshield can be directly cleaned.

[0011] Compared with the prior art, when cleaning the front windshield, there is no need to tediously disassemble the cab protection device. You only need to pull out the pin shaft and switch the first protective cover to the open state, and then it can be rotated to a suitable angle. The front windshield can be cleaned directly and conveniently, with a simple structure and easy operation.

[0012] In an optional embodiment, each second ear plate corresponds to two first ear plates, and a gap for accommodating the second ear plate is left between the two first ear plates. In the locked state, the second ear plate is clamped in the gap, and the pin shaft passes through the connecting holes on the first ear plate and the second ear plate in sequence.

[0013] Beneficial effect: Two first ear plates are arranged at intervals on the second longitudinal beam. When the first protective cover is in the locked state, the second ear plate is inserted into the gap between the two first ear plates so that the connection holes of the first ear plate and the second ear plate are aligned. Then, the pin passes through the connection holes of the first ear plate and the second ear plate to lock the first ear plate and the second ear plate, thereby ensuring the stability of the first protective cover in the locked state and preventing the first protective cover from loosening due to vibration or impact. At the same time, the gap between the two first ear plates facilitates the insertion and removal of the second ear plate, so that the first protective cover can be quickly switched between the locked state and the open state, which is convenient for operation.

[0014] In an optional embodiment, a locking piece is further included, a limiting hole is opened at the lower end of the pin shaft, the axis of the limiting hole is perpendicular to the axis of the pin shaft, and the locking piece is detachably arranged in the limiting hole for fixing the pin shaft.

[0015] Beneficial effect: A limiting hole perpendicular to the axis of the pin is set at the lower end of the pin. In the locked state, the locking piece is embedded in the limiting hole to effectively prevent the pin from loosening or sliding out of the connecting hole on the first ear plate and the second ear plate. Even in extreme working conditions such as vibration or impact, the pin can still be firmly maintained in the connecting hole of the first ear plate and the second ear plate, thereby avoiding accidental detachment and affecting the stability and safety of the first protective cover.

[0016] In an optional embodiment, a plurality of second ear plates are arranged at intervals along the length direction of the first protective cover, and a plurality of pairs of first ear plates are arranged on the second longitudinal beam corresponding to the second ear plates.

[0017] Beneficial effect: By arranging multiple second ear plates at intervals on the first protective cover, in the locked state, each second ear plate is locked with the corresponding pair of second ear plates through a pin shaft, and multiple positions of the first protective cover are locked, so that the connection between the first protective cover and the second longitudinal beam is more firm and stable, thereby improving the overall safety of the cab protection device and balancing the force on the sides of the first protective cover and the second longitudinal beam.

[0018] In an optional embodiment, the first protective cover is rotatably disposed on the first longitudinal beam via a plurality of hinges disposed at intervals.

[0019] Beneficial effects: The first protective cover is connected to the first longitudinal beam by a hinge, so that the first protective cover can rotate around the axial direction of the first longitudinal beam. In the open state, the first protective cover is conveniently rotated around the first longitudinal beam to a suitable position. At the same time, the first protective cover and the first longitudinal beam are connected by a hinge, which has a simple structure and is easy to manufacture. The first protective cover and the first longitudinal beam are connected by multiple hinges to ensure the firmness of the connection between the first protective cover and the first longitudinal beam.

[0020] In an optional embodiment, the first protective cover includes a protective frame and a plurality of first reinforcing ribs and second reinforcing ribs installed in the protective frame, the plurality of first reinforcing ribs are arranged side by side, and the plurality of second reinforcing ribs are arranged side by side and perpendicular to the plurality of first reinforcing ribs.

[0021] Beneficial effect: By arranging the first reinforcing rib and the second reinforcing rib side by side and perpendicular to each other, a grid-like internal support structure is formed, thereby improving the overall strength and impact resistance of the first protective cover, and the grid-like structure will not block the driver's line of sight.

[0022] In an optional embodiment, an extension portion is provided on the top of the first protective cover, the width of the extension portion is smaller than the width of the first protective cover, and the extension portion is symmetrically arranged about the longitudinal axis of the first protective cover.

[0023] Beneficial effect: By arranging an extension portion on the top of the first protective cover, the extension portion protrudes upward along the front windshield to protect the top of the cab. The width of the extension portion is smaller than the width of the first protective cover and is symmetrically arranged about the longitudinal axis of the first protective cover, so that the headlights on both sides of the top of the cab can be avoided, so that the extension portion is installed between the two headlights.

[0024] In an optional embodiment, a second protective cover is further included, wherein the second protective cover is fixed on the cab and is located below the first protective cover.

[0025] Beneficial effect: By arranging the second protective cover below the first protective cover, the area below the front windshield of the cab is protected, the protection performance of the area below the cab is enhanced, and when used in combination with the first protective cover, comprehensive protection is provided for the front area of ​​the cab.

[0026] In an optional embodiment, the plane where the first protective cover is located is arranged at an angle to the plane where the second protective cover is located.

[0027] Beneficial effect: By setting the plane where the first protective cover is located at an angle to the plane where the second protective cover is located, the first protective cover and the second protective cover can fit the front windshield of the cab more closely, thereby achieving a more optimized and comprehensive protection effect, which not only ensures effective coverage and protection of the front windshield, but also takes into account the smoothness of the appearance lines and the rationality of the overall structure.

[0028] In a second aspect, the utility model further provides an operating machine, comprising:

[0029] Cab;

[0030] The cab protection device, the first longitudinal beam and the second longitudinal beam are respectively fixed on opposite sides of the front windshield of the cab.

[0031] Beneficial effect: If the front windshield of this operating machine needs to be cleaned, there is no need to tediously disassemble the cab protection device. It is only necessary to switch the first protective cover to the open state and rotate the first protective cover to a suitable angle. The front windshield can be cleaned directly and conveniently, with a simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 creative work.

[0033] Figure 1This is a schematic structural diagram of a cab protection device according to an embodiment of the utility model;

[0034] Figure 2 This is a schematic structural diagram of a cab protection device according to an embodiment of the utility model from another perspective;

[0035] Figure 3 for Figure 1 A is a partial enlarged schematic diagram;

[0036] Figure 4 This is a schematic structural diagram of a first protective cover in a cab protection device according to an embodiment of the utility model;

[0037] Figure 5 This is a schematic structural diagram of a first longitudinal beam in a cab protection device according to an embodiment of the utility model;

[0038] Figure 6 The present invention is a schematic structural diagram of a second longitudinal beam in a cab protection device according to an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. First longitudinal beam; 101. Mounting seat; 2. Cab; 3. Second longitudinal beam; 301. First ear plate; 3011. Gap; 3012. Connecting hole; 4. First protective cover; 5. Second ear plate; 6. Pin; 601. Limiting hole; 7. Locking piece; 8. Hinge; 9. First reinforcing rib; 10. Second reinforcing rib; 11. Extension; 12. Second protective cover. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0042] In the related art, there are certain safety hazards in operating machinery operating in harsh environments. In order to ensure the personal safety of the driver, a protective device is usually installed outside the front windshield of the cab. However, the current protective device is fixed on the cab. When cleaning the front windshield, the protective device needs to be removed first, and then the protective device is reinstalled on the cab after the front windshield is cleaned. This is inconvenient for cleaning the front windshield on the cab.

[0043] In order to solve the above technical problems, the following Figures 1 to 6 , describing an embodiment of the utility model.

[0044] According to an embodiment of the present utility model, on the one hand, as Figures 1 to 6 As shown, a cab protection device is provided, comprising a first longitudinal beam 1 , a second longitudinal beam 3 and a first protection cover 4 .

[0045] Specifically, Figure 1 As shown, the first longitudinal beam 1 is suitable for being installed on one side of the front windshield of the cab 2 .

[0046] Specifically, Figures 1 to 3 As shown, the second longitudinal beam 3 is suitable for being installed on the other side of the front windshield of the cab 2 , the second longitudinal beam 3 is arranged opposite to the first longitudinal beam 1 , and a first ear plate 301 is provided on the second longitudinal beam 3 .

[0047] Specifically, Figures 1 to 3 As shown, one side of the first protective cover 4 is rotatably arranged on the first longitudinal beam 1, and the other side of the first protective cover 4 is provided with a second ear plate 5, the position of the second ear plate 5 corresponds to the position of the first ear plate 301, and the first protective cover 4 has a locked state and an open state.

[0048] In the locked state (combined Figures 1 to 3 The second ear plate 5 is connected and locked with the first ear plate 301 through the pin 6, and the first protective cover 4 is arranged outside the front windshield of the cab 2. In the open state (not shown in the figure), the first ear plate 301 and the second ear plate 5 are separated from the pin 6 and unlocked, and the first protective cover 4 is suitable for rotating around the first longitudinal beam 1.

[0049] In this cab protection device, the first longitudinal beam 1 and the second longitudinal beam 3 are respectively installed on opposite sides of the front windshield of the cab 2, and the first protective cover 4 is rotatably arranged on the first longitudinal beam 1, so that the first protective cover 4 has a locked state and an open state. During the operation of the operating machine, the first protective cover 4 is in a locked state. At this time, the first ear plate 301 and the second ear plate 5 are connected and locked through the pin shaft 6. The first protective cover 4 is arranged outside the front windshield of the cab 2 to protect the cab, thereby ensuring the safety of the driver. If the front windshield needs to be cleaned, the first protective cover 4 is switched from the locked state to the open state, so that the first ear plate 301 and the second ear plate 5 are separated from the pin shaft 6 and unlocked. At this time, the first protective cover 4 can rotate around the first longitudinal beam 1. After the first protective cover 4 is rotated to a suitable angle, the front windshield can be directly cleaned.

[0050] Compared with the prior art, when cleaning the front windshield, there is no need to tediously disassemble the cab protection device. You only need to pull out the pin shaft and switch the first protective cover 4 to the open state, and then it can be rotated to a suitable angle. The front windshield can be cleaned directly and conveniently, with a simple structure and easy operation.

[0051] Specifically, the first longitudinal beam 1 and the second longitudinal beam 3 can be installed on the A-pillar of the cab 2. In the embodiment of the present application, the installation method of the first longitudinal beam 1 and the second longitudinal beam 3 is not specifically limited.

[0052] Exemplarily, a threaded column is fixed on the A-pillar of the cab 2 , and the first longitudinal beam 1 and the second longitudinal beam 3 are fixed on the threaded column by bolts, so that the first longitudinal beam 1 and the second longitudinal beam 3 are fixed on the A-pillar of the cab 2 .

[0053] Specifically, the first longitudinal beam 1 and the second longitudinal beam 3 can be set to an I-shaped longitudinal beam, a square tube beam, a rectangular tube beam, etc. In the embodiment of the present application, the types of the first longitudinal beam 1 and the second longitudinal beam 3 are not specifically limited.

[0054] Specifically, the first protective cover 4 can be rotatably disposed on the first longitudinal beam 1 by means of a hinge 8, a hinge or a rotating seat. In the embodiment of the present application, the connection method between the first protective cover 4 and the first longitudinal beam 1 is not specifically limited.

[0055] Specifically, the shape of the first protective cover 4 can be set according to the shape of the front windshield of the cab 2. For example, the first protective cover 4 can be set to be rectangular, square, etc. In the embodiment of the present application, the shape of the first protective cover 4 is not specifically limited.

[0056] In one embodiment, if Figure 3 As shown, each second ear plate 5 corresponds to two first ear plates 301, and a gap 3011 for accommodating the second ear plate 5 is reserved between the two first ear plates 301. In the locked state, the second ear plate 5 is clamped in the gap 3011, and the pin 6 passes through the connecting holes 3012 on the first ear plate 301 and the second ear plate 5 in sequence.

[0057] Two first ear plates 301 are arranged at intervals on the second longitudinal beam 3. When the first protective cover 4 is in the locked state, the second ear plate 5 is inserted into the gap 3011 between the two first ear plates 301, so that the first ear plate 301 is aligned with the connecting hole 3012 on the second ear plate 5. Then, the pin 6 passes through the connecting hole 3012 on the first ear plate 301 and the second ear plate 5 to lock the first ear plate 301 and the second ear plate 5, thereby ensuring the stability of the first protective cover 4 in the locked state and preventing the first protective cover 4 from being loosened due to vibration or impact. At the same time, the gap 3011 between the two first ear plates 301 facilitates the insertion and removal of the second ear plate 5, so that the first protective cover 4 can be quickly switched between the locked state and the open state, which is convenient for operation.

[0058] Specifically, the connection holes 3012 on the first ear plate 301 and the second ear plate 5 may be circular holes, square holes, etc. In the embodiment of the present application, the connection holes 3012 on the first ear plate 301 and the second ear plate 5 are not specifically limited.

[0059] In one embodiment, if Figure 3 As shown, it also includes a locking member 7. A limiting hole 601 is provided at the lower end of the pin shaft 6. The axis of the limiting hole 601 is perpendicular to the axis of the pin shaft 6. The locking member 7 is detachably arranged in the limiting hole 601 to fix the pin shaft 6.

[0060] A limiting hole 601 perpendicular to the axis thereof is provided at the lower end of the pin shaft 6. In the locked state, by embedding the locking member 7 into the limiting hole 601, the pin shaft 6 can be effectively prevented from loosening or sliding out of the connecting hole 3012 on the first ear plate 301 and the second ear plate 5. Even in the face of extreme working conditions such as vibration or impact, the pin shaft 6 can still be firmly maintained in the connecting hole 3012 of the first ear plate 301 and the second ear plate 5, thereby avoiding affecting the stability and safety of the first protective cover 4 due to accidental detachment.

[0061] Specifically, the limiting hole 601 may be a through hole, a threaded hole, etc., and the locking member 7 may be a bolt, a flexible cable, etc. In the embodiment of the present application, the limiting hole 601 and the locking member 7 are not specifically limited.

[0062] Exemplarily, the limiting hole 601 is set as a through hole, which is set at the lower end of the pin 6 and perpendicular to the axis of the pin 6. The locking member 7 is a bendable wire. In the locked state, the wire is passed through the through hole and then bent to prevent the wire from falling out of the through hole. If the pin 6 needs to be removed, the wire is first straightened and removed from the through hole, and then the pin 6 can be removed.

[0063] In one embodiment, if Figure 4 and Figure 6 As shown, a plurality of second ear plates 5 are arranged at intervals along the length direction of the first protective cover 4, and a plurality of pairs of first ear plates 301 are arranged on the second longitudinal beam 3 in correspondence with the second ear plates 5. By arranging a plurality of second ear plates 5 at intervals on the first protective cover 4, in the locked state, each second ear plate 5 is locked with a corresponding pair of second ear plates 5 through a pin 6, and multiple positions of the first protective cover 4 are locked, so that the connection between the first protective cover 4 and the second longitudinal beam 3 is more firm and stable, the overall safety of the cab protection device is improved, and the side forces of the first protective cover 4 and the second longitudinal beam 3 are balanced.

[0064] Specifically, the plurality of second ear plates 5 may be evenly spaced along the length direction of the first protective cover 4 , or may be unevenly spaced. In the embodiment of the present application, the arrangement of the plurality of second ear plates 5 is not specifically limited.

[0065] Exemplarily, two second ear plates 5 are provided, and the two second ear plates 5 are respectively provided near the upper and lower ends of the first protective cover 4 , and two pairs of first ear plates 301 are provided on the second longitudinal beam 3 at positions corresponding to the two second ear plates 5 .

[0066] In one embodiment, if Figure 1 and Figure 4 As shown, the first protective cover 4 is rotatably arranged on the first longitudinal beam 1 by a hinge 8, and the first protective cover 4 and the first longitudinal beam 1 are connected by the hinge 8, so that the first protective cover 4 can rotate around the axial direction of the first longitudinal beam 1. In the open state, the first protective cover 4 can be rotated around the first longitudinal beam 1 to a suitable position. At the same time, the first protective cover 4 and the first longitudinal beam 1 are connected by the hinge 8, which has a simple structure and is easy to produce.

[0067] Specifically, a plurality of hinges 8 may be provided, and the first protective cover 4 and the first longitudinal beam 1 are connected by the plurality of hinges 8 to ensure the firmness of the connection between the first protective cover 4 and the first longitudinal beam 1 .

[0068] In one embodiment, if Figure 4 As shown, the first protective cover 4 includes a protective frame, a first reinforcing rib 9 and a second reinforcing rib 10. A plurality of first reinforcing ribs 9 and a second reinforcing rib 10 are provided and installed in the protective frame. A plurality of first reinforcing ribs 9 are arranged side by side, and a plurality of second reinforcing ribs 10 are arranged side by side and perpendicular to the plurality of first reinforcing ribs 9.

[0069] By arranging the first reinforcing rib 9 and the second reinforcing rib 10 side by side and perpendicular to each other, a grid-like internal support structure is formed, which greatly improves the overall strength and impact resistance of the first protective cover 4, and the grid-like structure will not block the driver's line of sight.

[0070] Specifically, the first reinforcing rib 9 and the second reinforcing rib 10 may be provided in a plate shape or a rod shape, etc. In the embodiment of the present application, the structural shapes of the first reinforcing rib 9 and the second reinforcing rib 10 are not specifically limited.

[0071] Exemplarily, the first reinforcing rib 9 and the second reinforcing rib 10 are provided in a plate shape, and the first reinforcing rib 9 and the second reinforcing rib 10 are fixed by welding.

[0072] In one embodiment, if Figure 4 As shown, an extension portion 11 is provided on the top of the first protective cover 4, the width of the extension portion 11 is smaller than the width of the first protective cover 4, and the extension portion 11 is symmetrically arranged about the longitudinal axis of the first protective cover 4. By arranging the extension portion 11 on the top of the first protective cover 4, the extension portion 11 protrudes upward along the front windshield to protect the top of the cab 2. The width of the extension portion 11 is smaller than the width of the first protective cover 4 and is symmetrically arranged about the longitudinal axis of the first protective cover 4, so that the headlights on both sides of the top of the cab 2 can be avoided, so that the extension portion 11 is installed between the two headlights.

[0073] Specifically, the extension portion 11 can be provided in a regular shape such as a rectangle or a square, or can be provided in an irregular shape. In the embodiment of the present application, the shape of the extension portion 11 is not specifically limited.

[0074] In one embodiment, if Figure 1 and Figure 2 As shown, the second protective cover 12 is also included, and the second protective cover 12 is fixed on the cab 2 and located below the first protective cover 4. By arranging the second protective cover 12 below the first protective cover 4, the area below the front windshield of the cab 2 is protected, the protective performance of the area below the cab 2 is enhanced, and the second protective cover 12 is used in combination with the first protective cover 4 to provide comprehensive protection for the front area of ​​the cab 2.

[0075] Specifically, the second protective cover 12 may also be formed by a protective frame and a plurality of reinforcing ribs. In the embodiment of the present application, the structure of the second protective cover 12 is not specifically limited.

[0076] Specifically, the second protective cover 12 can be fixed to the cab 2 by bolts, or by a snap-on method. In the embodiment of the present application, the connection method between the second protective cover 12 and the cab 2 is not specifically limited.

[0077] In one embodiment, the plane where the first protective cover 4 is located is set at an angle to the plane where the second protective cover 12 is located. By setting the plane where the first protective cover 4 is located at an angle to the plane where the second protective cover 12 is located, the first protective cover 4 and the second protective cover 12 are more closely fitted to the front windshield of the cab 2, thereby achieving a more optimized and comprehensive protective effect, which not only ensures effective coverage and protection of the front windshield, but also takes into account the smoothness of the appearance lines and the rationality of the overall structure.

[0078] Specifically, the angle formed by the plane where the first protective cover 4 and the second protective cover 12 are located can be 160°, 165°, 170°, etc. In the embodiment of the present application, the angle formed by the plane where the first protective cover 4 and the second protective cover 12 are located is not specifically limited.

[0079] Specifically, Figure 5 As shown, a plurality of mounting seats 101 are provided on the first longitudinal beam 1 at intervals along its length direction. The mounting seats 101 are π-shaped and are suitable for being provided on the cab 2 via fasteners so as to facilitate installation of the first longitudinal beam 1 on the cab 2 .

[0080] The working principle of the cab protection device in this embodiment is described as follows:

[0081] 1) Install the cab protection device on the operating machinery:

[0082] First, the studs are fixed to the A-pillars on opposite sides of the cab 2, the first longitudinal beam 1 and the second longitudinal beam 3 are fixed to the corresponding studs by bolts, and then the first protective cover 4 is installed on the first longitudinal beam 1 by hinges 8, so that the first protective cover 4 can rotate around the first longitudinal beam 1. The second protective cover 12 is fixed to the cab 2 and located below the first protective cover 4, and the installation of the cab protection device is completed.

[0083] 2) When the driver is operating the machine, the first protective cover 4 is in a locked state:

[0084] The first ear plate 301 is connected and locked with the second ear plate 5 through the pin shaft 6. The locking member 7 is arranged in the limiting hole 601 of the pin shaft 6 to ensure that the pin shaft 6 is fixed. The first protective cover 4 is arranged outside the front windshield of the cab 2 to play a protective role and ensure the safety of the driver.

[0085] 3) When cleaning the front windshield of the operating machine:

[0086] Switch the first protective cover 4 from the locked state to the open state, first remove the locking member 7 from the limiting hole 601, then remove the pin 6, so that the first ear plate 301 and the second ear plate 5 are separated from the pin 6 and unlocked. At this time, the first protective cover 4 can rotate around the first longitudinal beam 1. After the first protective cover 4 is rotated to a suitable angle, the front windshield can be cleaned directly.

[0087] According to an embodiment of the present utility model, on the other hand, a working machine is provided, including a cab 2 and a cab protection device.

[0088] Specifically, the first longitudinal beam 1 and the second longitudinal beam 3 are respectively fixed on opposite sides of the front windshield of the cab 2 .

[0089] For this operating machine, if the front windshield needs to be cleaned, there is no need to tediously disassemble the cab protection device. It is only necessary to switch the first protective cover 4 to the open state and rotate the first protective cover 4 to a suitable angle. The front windshield can be cleaned directly and conveniently, with a simple structure and easy operation.

[0090] It should be noted that the operating machinery includes but is not limited to excavators, cranes, pile drivers, mixers, etc. In the embodiments of the present application, the types of operating machinery are not specifically limited.

[0091] Although the embodiments of the present invention are described in conjunction with 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 are all within the scope defined by the appended claims.

Claims

1. A cab protection device, characterized in that: include: A first longitudinal beam (1) adapted to be mounted on one side of a front windshield of a cab (2); A second longitudinal beam (3) is suitable for being installed on the other side of the front windshield of the cab (2), and a first ear plate (301) is provided on the second longitudinal beam (3); A first protective cover (4), one side of which is rotatably arranged on the first longitudinal beam (1), a second ear plate (5) corresponding to the position of the first ear plate (301) is arranged on the other side of the first protective cover (4), and the first protective cover (4) has a locked state and an open state; In the locked state, the second ear plate (5) is connected and locked to the first ear plate (301) via a pin shaft (6), and the first protective cover (4) is arranged outside the front windshield of the cab (2); in the opened state, the first protective cover (4) is suitable for rotating around the first longitudinal beam (1).

2. The cab protection device according to claim 1, characterized in that: Each of the second ear plates (5) corresponds to two of the first ear plates (301), and a gap (3011) for accommodating the second ear plate (5) is reserved between the two first ear plates (301). In the locked state, the second ear plate (5) is clamped in the gap (3011), and the pin shaft (6) passes through the connecting holes (3012) on the first ear plate (301) and the second ear plate (5) in sequence.

3. The cab protection device according to claim 2, characterized in that: It also includes a locking member (7), a limiting hole (601) is provided at the lower end of the pin shaft (6), the axis of the limiting hole (601) is perpendicular to the axis of the pin shaft (6), and the locking member (7) is detachably arranged in the limiting hole (601) for fixing the pin shaft (6).

4. The cab protection device according to claim 2, characterized in that: A plurality of the second ear plates (5) are arranged at intervals along the length direction of the first protective cover (4), and a plurality of pairs of the first ear plates (301) are arranged on the second longitudinal beam (3) in a one-to-one correspondence with the second ear plates (5).

5. The cab protection device according to claim 1, characterized in that: The first protective cover (4) is rotatably arranged on the first longitudinal beam (1) via a plurality of hinges (8) arranged at intervals.

6. The cab protection device according to any one of claims 1 to 5, characterized in that: The first protective cover (4) comprises a protective frame and a plurality of first reinforcing ribs (9) and second reinforcing ribs (10) installed in the protective frame, wherein the plurality of first reinforcing ribs (9) are arranged side by side, and the plurality of second reinforcing ribs (10) are arranged side by side and perpendicular to the plurality of first reinforcing ribs (9).

7. The cab protection device according to any one of claims 1 to 5, characterized in that: An extension portion (11) is provided at the top of the first protective cover (4); the extension portion (11) has a width smaller than that of the first protective cover (4) and is symmetrically arranged about the longitudinal axis of the first protective cover (4).

8. The cab protection device according to any one of claims 1 to 5, characterized in that: It also comprises a second protective cover (12), wherein the second protective cover (12) is fixedly mounted on the cab (2) and is located below the first protective cover (4).

9. The cab protection device according to claim 8, characterized in that: The plane where the first protective cover (4) is located and the plane where the second protective cover (12) is located are arranged at an angle.

10. A working machine, characterized in that: include: Cab (2); The cab protection device according to any one of claims 1 to 9, wherein the first longitudinal beam (1) and the second longitudinal beam (3) are respectively fixedly arranged on opposite sides of a front windshield of the cab (2).

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