Cab guard and working machine

Abstract

The present application relates to the technical field of protective device, provide a kind of cab protective device and working machine.The cab protective device includes overall frame, telescopic protective screen, and the side of overall frame is provided with multiple connecting pieces;Telescopic protective screen has first state and second state, in the first state, telescopic protective screen shields the inside of overall frame, in the second state, telescopic protective screen opens at least partial area of the inside of overall frame.The present application switches telescopic protective screen to the first state for protection under dangerous working condition, switches telescopic protective screen to the second state under safe working condition, guarantees the field of view of driver, is convenient for glass cleaning and broken window escape.

Description

Technical Field

[0001] This invention relates to the field of protective device technology, and in particular to a cab protective device and operating machinery. Background Technology

[0002] Currently, excavators and other construction machinery are widely used in building construction, road construction, mining, and disaster relief projects. Therefore, they often need to be used in harsh environments, especially in mines and tunnels where falling rocks and bricks frequently occur. These falling rocks and bricks can easily impact the front and top windows of the cab, causing injury to the driver. Therefore, excavator cabs must be equipped with protective devices.

[0003] Most of the existing protective devices disclosed in the technology adopt a structure of welded steel plates fixed to the cab, which provides a certain degree of protection. However, this structure can easily affect the driver's vision in safe operating conditions, hinder the driver from breaking windows to escape, and make it inconvenient to clean the glass, thus having certain limitations in use. Summary of the Invention

[0004] This invention provides a cab protection device and operating machinery to solve at least one of the defects of existing cab protection devices, such as affecting the driver's vision under safe operating conditions, hindering the driver from breaking windows to escape, and making it inconvenient to clean the glass.

[0005] This invention provides a cab protection device, comprising:

[0006] An integral frame, wherein one side of the integral frame is provided with multiple connectors, the connectors being adapted to be fixedly connected to the cab;

[0007] A telescopic protective net, wherein one end of the telescopic protective net along the telescopic direction is fixedly connected to one side of the overall frame, the telescopic protective net having a first state and a second state, wherein in the first state the telescopic protective net covers the inside of the overall frame, and in the second state the telescopic protective net opens at least a portion of the inside of the overall frame.

[0008] According to a cab protection device provided by the present invention, the telescopic protective net includes a plurality of parallel first rods and a plurality of parallel second rods, the plurality of first rods and the plurality of second rods being intersected, and the intersection of the first rods and the second rods being connected by a pivot.

[0009] According to a driver's cab protection device provided by the present invention, the telescopic protective net is provided with a handle, the handle is connected to the movable end of the telescopic protective net, and faces away from the connecting member.

[0010] By setting a handle, operators can easily switch between the first and second protective nets, and the operator's hands can be prevented from being pinched during operation.

[0011] According to a cab protection device provided by the present invention, the upper and lower sides of the overall frame are respectively provided with sliding grooves, the first protective net and the second protective net are respectively slidably connected to the corresponding sliding grooves, and the handle is slidably disposed in the sliding groove.

[0012] Sliding the handle into the chute makes it easier to drive the first and second protective nets to extend and retract, overcoming the resistance between the first and second protective nets and the sidewall of the chute.

[0013] According to a cab protection device provided by the present invention, the telescopic protective net includes a first protective net and a second protective net. The first protective net is disposed on the upper part of the overall frame, and the second protective net is disposed on the lower part of the overall frame. The first protective net and the second protective net have a first state and a second state, respectively. In the first state, the first protective net covers the upper area of ​​the overall frame, and the second protective net covers the lower area of ​​the overall frame. In the second state, the first protective net opens the upper area of ​​the overall frame, and the second protective net opens the lower area of ​​the overall frame.

[0014] According to a cab protection device provided by the present invention, the fixed ends of the first protective net and the second protective net are connected to two opposite sides of the overall frame, and the sliding directions of the movable ends of the first protective net and the second protective net are opposite when they are shortened.

[0015] According to a cab protection device provided by the present invention, the overall frame is provided with reinforcing ribs, the reinforcing ribs are located on the side of the first protective net and the second protective net near the connector, and in the first state, the first protective net and the second protective net respectively cover the reinforcing ribs.

[0016] By setting reinforcing ribs, protection can be formed on the side of the first and second protective nets away from the chute, preventing deformation on the side away from the chute when the first and second protective nets are impacted, thus further improving safety.

[0017] According to a cab protection device provided by the present invention, the connector is detachably connected to at least one of the integral frame and the cab.

[0018] This makes it easy to disassemble the entire frame for maintenance or replacement.

[0019] A cab protection device according to the present invention further includes:

[0020] A locking mechanism adapted to lock the position of the telescopic protective net when the telescopic protective net is in the first state.

[0021] By using a locking mechanism to lock the telescopic protective net in its first state, it is possible to prevent the telescopic protective net from accidentally switching to the second state under dangerous working conditions, thus effectively improving production safety.

[0022] The present invention also provides a working machine, including the above-mentioned cab protection device.

[0023] The cab protection device and operating machinery provided by this invention, by setting a telescopic protective net that can switch states on the overall frame, can switch the telescopic protective net to the first state for protection in dangerous working conditions, and switch the telescopic protective net to the second state in safe working conditions, so as to ensure the driver's vision, facilitate glass cleaning, and also facilitate the driver to break the window to escape, thus taking into account both safety and convenience of use. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a cab protection device provided by the present invention when the first and second protective nets are in the first state;

[0026] Figure 2 This is a schematic diagram of the structure of a cab protection device provided by the present invention when the first and second protective nets are in the second state;

[0027] Figure 3 This is a schematic diagram of the structure of a driver's cab protection device provided by the present invention when the first protective net is in the second state and the second protective net is in the first state;

[0028] Figure 4 This is a schematic diagram of the structure of a driver's cab protection device provided by the present invention when the first protective net is in the first state and the second protective net is in the second state;

[0029] Figure 5 This is an exploded structural diagram of a cab protection device provided by the present invention;

[0030] Figure 6 This is a schematic diagram of the cab protection device provided by the present invention in its use state;

[0031] Figure 7 This is a schematic diagram of the locking mechanism in a cab protection device provided by the present invention;

[0032] Figure label:

[0033] 10. Overall frame; 11. Top frame; 12. Bottom frame; 13. Left side frame; 14. Right side frame; 15. Left side mounting base; 16. Right side mounting base; 17. Lower side mounting base; 18. Slide groove; 19. Reinforcing rib; 20. First protective net; 30. Second protective net; 40. Handle; 50. Mounting block; 51. Mounting cavity; 52. First sliding hole; 53. Second sliding hole; 60. Sliding pin; 70. Elastic reset component; 80. Cab. Detailed Implementation

[0034] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0037] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] The following is combined Figures 1 to 7 The cab protection device of the present invention is described. Figure 1 The upper arrow indicates the extension direction of the first protective net 20, and the lower arrow indicates the extension direction of the second protective net 30. This cab protection device can be applied to the front of the cab 80 of operating machinery such as excavators to protect the front of the cab 80. It is worth noting that the front of the cab 80 can be equipped with a windshield only in the upper part, or it can be entirely covered by a windshield; the cab protection device of this embodiment is applicable to both situations.

[0040] Combination Figures 1 to 6 The cab protection device of this invention includes an integral frame 10 and a telescopic protective net. A plurality of connectors are provided on one side of the integral frame 10, and the connectors are adapted to be fixedly connected to the cab 80. One end of the telescopic protective net along the telescopic direction is fixedly connected to one side of the integral frame 10. The telescopic protective net has a first state and a second state. In the first state, the telescopic protective net covers the inside of the integral frame 10. In the second state, the telescopic protective net opens at least a portion of the inside of the integral frame 10.

[0041] Optionally, the telescopic protective net includes multiple parallel first poles and multiple parallel second poles, which are arranged in an overlapping manner. The overlapping positions of the first and second poles are connected by a pivot. The telescopic function of the protective net is achieved by the relative rotation between the first and second poles. Specifically, when the included angle between the first and second poles decreases, the length of the telescopic protective net shortens; when the included angle between the first and second poles increases, the telescopic protective net lengthens.

[0042] In some embodiments of the present invention, the telescopic protective net includes a first protective net 20 and a second protective net 30. The first protective net 20 is disposed on the upper part of the overall frame 10, and the second protective net 30 is disposed on the lower part of the overall frame 10. The first protective net 20 and the second protective net 30 have a first state and a second state, respectively. In the first state, the first protective net 20 covers the upper area of ​​the overall frame 10, and the second protective net 30 covers the lower area of ​​the overall frame 10. In the second state, the first protective net 20 opens the upper area of ​​the overall frame 10, and the second protective net 30 opens the lower area of ​​the overall frame 10.

[0043] In this embodiment of the invention, the first protective net 20 and the second protective net 30 do not affect each other when switching states. In other words, when the first protective net 20 is in the first state, the second protective net 30 can be in the first state or the second state. When the first protective net 20 is in the second state, the second protective net 30 can also be in the first state or the second state.

[0044] In this embodiment of the invention, the first protective net 20 and the second protective net 30 can be switched as needed. Specifically, when the operating machinery is working under dangerous conditions, the first protective net 20 and the second protective net 30 can be switched to the first state. At this time, the first protective net 20 and the second protective net 30 cover the upper and lower areas of the overall frame 10, thus achieving overall protection of the upper and lower front of the cab 80, preventing large rocks, bricks, and other foreign objects from directly impacting the front of the cab 80 and preventing accidents to the operators. When the operating machinery is used under safe conditions, the first protective net 20 and the second protective net 30 can be switched to the second state. At this time, the first protective net 20 and the second protective net 30 do not cover the front of the cab 80 or only cover a small area, allowing the driver to have a better field of vision and easier operation. In case of danger, it is also easier for the driver to break the window to escape. In addition, when the front glass of the cab 80 needs to be cleaned, switching the first protective net 20 and the second protective net 30 to the second state facilitates the operation.

[0045] It is worth noting that the telescopic protective net in this embodiment of the invention, including the first protective net 20 and the second protective net 30, has the following advantages: First, it can be better adapted to the cab 80 structure with glass on both the upper and lower sides, while meeting the protection and cleaning needs of both the upper and lower sides; Second, when the danger only occurs on the upper or lower side of the cab 80, one of the first protective net 20 and the second protective net 30 can be kept in the first state, while the other can be switched to the second state, making it more flexible to use. For example, when only the lower area of ​​the front side of the cab 80 is prone to collision problems, the second protective net 30 can be kept in the first state for protection, while the first protective net 20 can be switched to the second state to avoid affecting the driver's vision.

[0046] In some embodiments of the present invention, the overall frame 10 includes a top frame 11, a bottom frame 12, a left frame 13, and a right frame 14. The top frame 11 and the bottom frame 12 are horizontally arranged and spaced apart in the vertical direction. The length and spacing of the top frame 11 and the bottom frame 12 are determined according to the vertical length and horizontal width of the front side of the cab 80. The top end of the left frame 13 is fixedly connected to the left end of the top frame 11, and the bottom end of the left frame 13 is fixedly connected to the left end of the bottom frame 12. The top end of the right frame 14 is fixedly connected to the right end of the top frame 11, and the bottom end of the right frame 14 is fixedly connected to the bottom end of the bottom frame 12. Thus, the top frame 11, the bottom frame 12, the left frame 13, and the right frame 14 form the overall frame 10 structure. It is worth noting that the top frame 11, bottom frame 12, left frame 13, and right frame 14 can all adopt a straight-line extension structure, or they can be extended in other shapes such as arcs, as long as they can be adapted to the shape of the front side of the cab 80. To facilitate the connection between the telescopic protective net and the overall frame 10, in this embodiment, the top frame 11, bottom frame 12, left frame 13, and right frame 14 are preferably straight-line extension structures. It is also worth noting that when the front side of the cab 80 is an arc-shaped structure, and the top frame 11, bottom frame 12, left frame 13, and right frame 14 are straight-line extension structures, the overall frame 10 can also be adapted to the front side of the cab 80 by selecting the connection length of the connectors.

[0047] Optionally, at least one of the top frame 11, bottom frame 12, left frame 13, and right frame 14 is composed of two plate-like structures. The two plate-like structures are parallel in length and fixed vertically on their sides. This facilitates the installation of connectors, the first protective net 20, and the second protective net 30, and also helps to enhance the bending resistance of the top frame 11, bottom frame 12, left frame 13, and right frame 14, thereby increasing the overall structural strength of the frame 10.

[0048] In this embodiment, the top frame 11, bottom frame 12, left frame 13 and right frame 14 can be connected by means such as welding or bolting. Preferably, the top frame 11, bottom frame 12, left frame 13 and right frame 14 are fixed by welding to achieve good connection strength and improve safety in use.

[0049] In some embodiments of the present invention, the connector is detachably connected to at least one of the integral frame 10 and the cab 80. Preferably, the connector is detachably connected to both the integral frame 10 and the cab 80. For example, the connector and the integral frame 10 are respectively provided with mounting holes, and the connector is connected to the integral frame 10 and the cab 80 by bolts passing through the mounting holes. Furthermore, washers are provided at the mating positions of the bolts to the integral frame 10 and / or the mating positions of the bolts and the connector.

[0050] Optionally, the connector includes a left mounting base 15, a right mounting base 16, and a lower mounting base 17. The left mounting base 15 is disposed on the left frame 13, the right mounting base 16 is disposed on the right frame 14, and the lower mounting base 17 is disposed on the lower frame. In this embodiment, the number of left mounting bases 15, right mounting bases 16, and lower mounting bases 17 is not limited. For example, two of each of the left mounting bases 15, right mounting bases 16, and lower mounting bases 17 are provided at intervals.

[0051] Optionally, at least one of the left mounting bracket 15, the right mounting bracket 16, and the lower mounting bracket 17 is an L-shaped structure, with one side plate fixed perpendicularly to the integral frame 10 and the other side plate adapted to be fixed to the front side of the cab 80. Furthermore, the two side plates of the L-shaped structure are respectively provided with mounting holes to facilitate bolt installation.

[0052] It is worth noting that the connector can also be equipped with an upper mounting seat for connection to the top of the cab 80. The shape of the upper mounting seat may be the same as or different from that of the left mounting seat 15, the right mounting seat 16 and the lower mounting seat 17, and is not limited here.

[0053] In some embodiments of the present invention, the overall frame 10 is provided with a sliding groove 18, and the telescopic protective net is slidably connected to the sliding groove 18. Further, the upper and lower sides of the overall frame 10 are respectively provided with sliding grooves 18, and the first protective net 20 and the second protective net 30 are respectively slidably connected to the corresponding sliding grooves 18.

[0054] Taking the first protective net 20 as an example of being adapted to extend horizontally to the left, the top frame 11 in the overall frame 10 is provided with a sliding groove 18, which extends along the length direction of the top frame 11. The upper side of the first protective net 20 is slidably connected to the sliding groove 18, and the right end of the first protective net 20 is fixedly connected to the right side frame 14. The first protective net 20 is adapted to slide to the left and extend, and slide to the right and shorten. When the left end of the first protective net 20 interacts with the position of the left side frame 13, the first protective net 20 covers the upper part of the overall frame 10.

[0055] In some embodiments of the present invention, the fixed ends of the first protective net 20 and the second protective net 30 are connected to two opposite sides of the overall frame 10, and the sliding directions of the movable ends of the first protective net 20 and the second protective net 30 are opposite when they are shortened.

[0056] For example, the fixed end of the first protective net 20 is connected to the right frame 14 of the overall frame 10, the upper side of the first protective net 20 is slidably connected to the top frame 11, the fixed end of the second protective net 30 is connected to the left frame 13, and the lower side of the second protective net 30 is slidably connected to the bottom frame 12. When both the first protective net 20 and the second protective net 30 are extended, they can cover the upper and lower areas of the overall frame 10. When the first protective net 20 and the second protective net 30 are shortened, the first protective net 20 retracts to the right side of the overall frame 10, and the second protective net 30 retracts to the left side of the overall frame 10.

[0057] Optionally, the first protective net 20 and the second protective net 30 are placed on the front and rear sides of the overall frame 10 to avoid interference between them. Taking a telescopic protective net comprising multiple parallel first rods and multiple parallel second rods as an example, when the telescopic protective net is extended, its width decreases; conversely, when it is shortened, its width increases. To ensure that the first protective net 20 and the second protective net 30 can completely cover the internal area of ​​the overall frame 10 when extended, the combined width of the first protective net 20 and the second protective net 30 should be at least not less than the vertical width of the overall frame 10. That is, the lower side of the first protective net 20 is connected to or overlaps with the upper side of the second protective net 30. When the first protective net 20 and the second protective net 30 are shortened, their widths both increase, which can easily lead to interference between the lower end of the first protective net 20 and the upper end of the second protective net 30. In this embodiment, placing the first protective net 20 and the second protective net 30 on the front and rear sides of the overall frame 10 avoids this problem.

[0058] Optionally, at least one slider is provided in the slide groove 18, the slider being adapted to slide along the slide groove 18, and the side of the telescopic protective net that mates with the slide groove 18 is fixedly connected to the slider. When the telescopic protective net includes multiple parallel first rods and multiple parallel second rods, the connection point between the telescopic protective net and the slider can be the first rod, the second rod, or the intersection formed by the first rod and the second rod.

[0059] Optionally, a roller is provided on the lower side of the slider, which is in rolling connection with the lower side wall of the slide groove 18, so that the slider slides more smoothly.

[0060] In some embodiments of the present invention, the telescopic protective net is provided with a handle 40, which is connected to the movable end of the telescopic protective net and faces away from the connecting member. Specifically, at least one of the first protective net 20 and the second protective net 30 is provided with a handle 40, which is connected to the movable end of the corresponding first protective net 20 and second protective net 30. Preferably, both the movable ends of the first protective net 20 and the second protective net 30 are provided with handles 40. The handle 40 can be fixedly connected to the first protective net 20 and the second protective net 30 by any means such as snap-fit, riveting, or threaded connection. The handle 40 allows for convenient telescopic operation of the first protective net 20 and the second protective net 30, and can prevent injury to the operator's hands.

[0061] Optionally, the handle 40 is slidably disposed in the slide groove 18. For example, one end of the handle 40 passes through the first or second rod of the first protective net 20 or the second protective net 30, and a roller is provided at the end of the handle 40 passing through the first or second rod, which is rotatably disposed within the slide groove 18. Since the first protective net 20 and the second protective net 30 are slidably engaged with the slide groove 18 on only one side (upper or lower), the resistance during extension and retraction is mainly concentrated at the engagement position of the slide groove 18. Sliding the handle 40 with the slide groove 18 makes it easier to achieve the extension and retraction of the first protective net 20 and the second protective net 30.

[0062] In some embodiments of the present invention, the overall frame 10 is provided with reinforcing ribs 19, which are located on the side of the first protective net 20 and the second protective net 30 near the connector. In the first state, the first protective net 20 and the second protective net 30 respectively cover the reinforcing ribs 19.

[0063] Specifically, the reinforcing rib 19 has an n-shaped structure with its length direction being horizontal. The reinforcing rib 19 and the connector are located on the same side of the overall frame 10. One end of the reinforcing rib 19 is connected to the left frame 13, and the other end of the reinforcing rib 19 is connected to the right frame 14.

[0064] By setting the reinforcing ribs 19, not only can the structural stability of the overall frame 10 be increased, but also the protection reinforcement can be formed on the lower side of the first protective net 20 and the upper side of the second protective net 30, so as to prevent the lower side of the first protective net 20 and the upper side of the second protective net 30 from deforming towards the cab 80 when impacted, thereby further improving safety.

[0065] like Figure 7 As shown, in some embodiments of the present invention, the cab protection device further includes a locking mechanism adapted to lock the position of the telescopic protective net when the telescopic protective net is in a first state.

[0066] In this embodiment, the locking mechanism can be any form such as a locking pin, bolt, or hook. In some optional solutions, the locking mechanism includes a mounting block 50, a sliding pin 60, and an elastic reset member 70. The mounting block 50 is adapted to move with the movable end of the telescopic protective net. The sliding pin 60 is slidably connected to the mounting block 50. The sliding pin 60 is adapted to extend one end out of the mounting block 50 and retract into the mounting block 50. The elastic reset member 70 is used to provide an outward elastic support force to the sliding pin 60. The overall frame 10 is provided with a pin hole that matches the sliding pin 60. When the telescopic protective net is extended to the first state, the sliding pin 60 is inserted into the pin hole to lock the telescopic protective net. Unlocking can be achieved by sliding the sliding pin 60 away from the pin hole.

[0067] Optionally, the mounting block 50 is provided with a mounting cavity 51 and a first sliding hole 52 communicating with the mounting cavity 51, a sliding pin 60 is provided in the first sliding hole 52, and an elastic reset member 70 is provided in the mounting cavity 51.

[0068] Optionally, the mounting block 50 is further provided with a second sliding hole 53 communicating with the mounting cavity 51. The handle 40 is slidably disposed in the second sliding hole 53, and the portion of the handle 40 located in the mounting cavity 51 is fixedly connected to the sliding pin 60. The elastic reset member 70 is disposed in the mounting cavity 51 and connected to the handle 40. In this embodiment, the elastic reset member 70 can be a compression spring, a tension spring, or a bending spring, etc. The sliding of the handle 40 can cause the sliding pin 60 to slide into the mounting cavity 51 to unlock. When the handle 40 is reset by the elastic force of the elastic reset member 70, it can drive the sliding pin 60 to extend outward to lock. In this embodiment, a scheme of unlocking by driving the sliding pin 60 with the handle 40 is provided. In some other embodiments, the end of the sliding pin 60 away from the pin hole can also extend out of the mounting cavity 51, and the elastic reset member 70 can be connected to the sliding pin 60, and the sliding pin 60 can be pulled out to unlock.

[0069] It is worth noting that in some other solutions, the telescopic protective net can also adopt other settings such as sliding connection or rotational connection with the frame, and the state can be switched by rotation or sliding. These will not be introduced one by one here.

[0070] This invention also provides a working machine, which includes a cab 80 and a cab protection device.

[0071] Optionally, the operating machinery also includes an upper protective device, which is fixed to the top of the cab 80. The front end of the upper protective device is connected to the top of the overall frame 10, thereby providing more comprehensive protection for the cab 80. The upper protective device can be a mesh structure supported by the frame, or a plate structure, etc., without specific limitations.

[0072] Optionally, the upper protective device is detachably connected to the cab 80 or the integral frame 10, thereby facilitating disassembly, maintenance or replacement.

[0073] In this embodiment of the invention, the type of operating machinery is not limited; for example, the operating machinery can be an excavator, crane, loader, etc. In other words, as long as the operating machinery can use the cab protection device of this invention, it is acceptable.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A driver's cab protection device, characterized in that, include: An integral frame (10) is provided on one side of which a plurality of connectors are provided, the connectors being adapted to be fixedly connected to the cab (80); A telescopic protective net, one end of which is fixedly connected to one side of the overall frame (10) along the telescopic direction, the telescopic protective net having a first state and a second state, in the first state, the telescopic protective net covering the inside of the overall frame (10), and in the second state, the telescopic protective net opening at least a portion of the inside of the overall frame (10); The telescopic protective net includes a first protective net (20) and a second protective net (30). The first protective net (20) is disposed on the upper part of the overall frame (10), and the second protective net (30) is disposed on the lower part of the overall frame (10). The first protective net (20) and the second protective net (30) have a first state and a second state, respectively. In the first state, the first protective net (20) covers the upper area of ​​the overall frame (10), and the second protective net (30) covers the lower area of ​​the overall frame (10). In the second state, the first protective net (20) opens the upper area of ​​the overall frame (10), and the second protective net (30) opens the lower area of ​​the overall frame (10). The fixed ends of the first protective net (20) and the second protective net (30) are connected to the two opposite sides of the overall frame (10). When the first protective net (20) and the second protective net (30) are shortened, the sliding directions of their movable ends are opposite. The first protective net (20) and the second protective net (30) are placed on the front and rear sides of the overall frame (10), respectively. The lower side of the first protective net (20) is connected to or overlaps with the upper side of the second protective net (30).

2. The cab protection device according to claim 1, characterized in that, The telescopic protective net includes multiple parallel first poles and multiple parallel second poles, which are intersected. The intersections between the first poles and the second poles are connected by a pivot.

3. The cab protection device according to claim 1, characterized in that, The telescopic protective net is provided with a handle (40), which is connected to the movable end of the telescopic protective net and faces away from the connector.

4. The cab protection device according to claim 3, characterized in that, The overall frame (10) is provided with a slide groove (18), the telescopic protective net is slidably connected to the slide groove (18), and the handle (40) is slidably disposed in the slide groove (18).

5. The cab protection device according to claim 1, characterized in that, The overall frame (10) is provided with reinforcing ribs (19), which are located on the side of the first protective net (20) and the second protective net (30) close to the connector. In the first state, the first protective net (20) and the second protective net (30) respectively cover the reinforcing ribs (19).

6. The cab protection device according to claim 1, characterized in that, The connector is detachably connected to at least one of the integral frame (10) and the cab (80).

7. The cab protection device according to claim 1, characterized in that, Also includes: A locking mechanism adapted to lock the position of the telescopic protective net when the telescopic protective net is in the first state.

8. A type of operating machinery, characterized in that, Includes the cab protection device as described in any one of claims 1 to 7.

Images