阅读说明：本技术 一种驾驶室顶护网结构和工程机械设备 (Cab roof guard net structure and engineering mechanical equipment ) 是由 刘同庆 谢青峰 邹云川 于 2019-09-25 设计创作，主要内容包括：本发明的实施例提供了一种驾驶室顶护网结构和工程机械设备,涉及工程机械技术领域。该驾驶室顶护网结构包括驾驶室本体、天窗、第一顶护网、第二顶护网和联动机构。天窗的一侧与驾驶室本体铰接。第一顶护网与驾驶室本体的顶部固定连接,并用于遮盖驾驶室本体的顶部。第二顶护网的一侧与第一顶护网铰接。联动机构连接于第一顶护网和第二顶护网之间,用于在天窗相对驾驶室本体正向转动并打开天窗口时,带动第二顶护网同步正向转动,或者在天窗相对驾驶室本体反向转动并关闭天窗口时,带动第二顶护网同步反向转动,以遮盖天窗。该驾驶室顶护网结构和工程机械设备,其能够起到防护功能,又能够实现天窗的开启功能,并且天窗开闭非常方便。(The embodiment of the invention provides a cab roof guard net structure and engineering mechanical equipment, and relates to the technical field of engineering machinery. The cab top guard net structure comprises a cab body, a skylight, a first top guard net, a second top guard net and a linkage mechanism. One side of the skylight is hinged with the cab body. The first top protecting net is fixedly connected with the top of the cab body and used for covering the top of the cab body. One side of the second top protecting net is hinged with the first top protecting net. The linkage mechanism is connected between the first top protecting net and the second top protecting net and used for driving the second top protecting net to synchronously rotate forwards when the skylight rotates forwards relative to the cab body and opens the skylight opening, or driving the second top protecting net to synchronously rotate backwards when the skylight rotates backwards relative to the cab body and closes the skylight opening so as to cover the skylight. The cab roof protecting net structure and the engineering mechanical equipment can play a role in protecting and can realize the opening function of the skylight, and the skylight can be opened and closed very conveniently.)

1. A cab top guard net structure is characterized by comprising a cab body (100), a skylight (200), a first top guard net (300), a second top guard net (400) and a linkage mechanism (500);

a skylight opening (110) is formed in the top of the cab body (100);

one side of the skylight (200) is hinged with the cab body (100), and the skylight (200) is used for opening or closing the skylight opening (110);

the first top protecting net (300) is fixedly connected with the top of the cab body (100) and is used for covering the top of the cab body (100);

one side of the second top protecting net (400) is hinged with the first top protecting net (300);

the linkage mechanism (500) is connected between the first top protecting net (300) and the second top protecting net (400) and used for driving the second top protecting net (400) to synchronously rotate in the forward direction when the skylight (200) rotates in the forward direction relative to the cab body (100) and opens the skylight opening (110), or driving the second top protecting net (400) to synchronously rotate in the reverse direction when the skylight (200) rotates in the reverse direction relative to the cab body (100) and closes the skylight opening (110) so as to cover the skylight (200).

2. A cab roof grille structure as defined in claim 1 wherein the linkage mechanism (500) comprises a linkage bar (510);

one end of the linkage rod (510) is hinged with the skylight (200), and the other end of the linkage rod is hinged with the second top protecting net (400).

3. A cab roof grille structure according to claim 2 wherein a hinge support (210) is provided on the sunroof (200), the hinge support (210) being provided with a first shaft hole (211);

the linkage rod (510) comprises a rod body (520) and a first rotating shaft (530) which is arranged at one end of the rod body (520) in a bending mode, a first fixing hole (531) is formed in the first rotating shaft (530), and the first rotating shaft (530) penetrates through the first shaft hole (211);

the linkage mechanism (500) further comprises a first fixing pin (550), and the first fixing pin (550) is matched with the first fixing hole (531).

4. A cab roof grille structure as set forth in claim 3 wherein said linkage (500) further comprises a first shim (570);

the first gasket (570) is sleeved on the first rotating shaft (530) and is arranged between the hinged support (210) and the rod body (520).

5. The structure of the roof guard net of the cab of claim 2, wherein a side plate (410) is provided at one side of the second roof guard net (400), and a second shaft hole (411) is provided at the side plate (410);

the linkage rod (510) comprises a rod body (520) and a second rotating shaft (540) which is arranged at one end of the rod body (520) in a bending mode, a second fixing hole (541) is formed in the second rotating shaft (540), and the second rotating shaft (540) penetrates through the second shaft hole (411);

the linkage mechanism (500) further comprises a second fixing pin (560), and the second fixing pin (560) is matched with the second fixing hole (541).

6. The cab roof grille structure of claim 5 wherein the linkage (500) further comprises a second shim (580);

the second gasket (580) is sleeved on the second rotating shaft (540) and is arranged between the side plate (410) and the rod body (520).

7. The cab roof guard net structure according to any one of claims 1 to 6, wherein the first roof guard net (300) is provided with a space-avoiding opening (310), and the position of the space-avoiding opening (310) corresponds to the position of the skylight opening (110);

when the skylight (200) rotates forwards relative to the cab body (100) and the skylight opening (110) is opened, the skylight (200) penetrates out of the avoiding opening (310);

when the skylight (200) rotates reversely relative to the cab body (100) and closes the skylight opening (110), the second top protective net (400) rotates relative to the first top protective net (300) and covers the avoidance opening (310).

8. A cab roof grille structure as defined in any one of claims 1 to 6 wherein the cab roof grille structure (10) further comprises a grille fixing rib (600) and a first hinge (700);

the guard net fixing rib (600) is welded to the first top guard net (300), and the second top guard net (400) is hinged to the guard net fixing rib (600) through the first hinge (700).

9. A cab roof grille structure according to any one of claims 1 to 6 wherein the cab roof grille structure (10) further comprises an air spring (800);

the air spring (800) is disposed between the sunroof (200) and the cab body (100).

10. A construction machine arrangement, characterized in that it comprises a cab roof grille structure (10) according to any one of claims 1-9.

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a cab top guard net structure and engineering mechanical equipment.

Background

At present, engineering machinery equipment such as a hydraulic excavator is generally provided with a skylight at the top of a cab for the purpose of ventilating the cab. However, if the excavator works in a mountain area with a severe environment, foreign matters such as stones often fall off, and in order to protect a cab and an operator, the most common measure is to install a top protection net at the top of the cab of the excavator so as to achieve the purpose of protection.

At present, top protecting nets installed on an excavator are all integrated, meanwhile, in order to guarantee stability and reliability of the top protecting nets of an excavator cab, the top protecting nets of the excavator are generally installed lower, but the lower integrated top protecting net structure can cause that a skylight of the excavator cannot be normally opened when needed, if the skylight of the excavator needs to be opened, the whole protecting net needs to be detached, and the excavator cab is very inconvenient.

Disclosure of Invention

The invention aims to provide a cab roof guard net structure and engineering mechanical equipment, which can play a protection function and realize the opening function of a skylight, and the skylight is very convenient to open and close.

Embodiments of the invention may be implemented as follows:

in a first aspect, an embodiment of the present invention provides a cab roof guard net structure, including a cab body, a sunroof, a first roof guard net, a second roof guard net, and a linkage mechanism;

the top of the cab body is provided with a skylight opening;

one side of the skylight is hinged with the cab body, and the skylight is used for opening or closing the skylight opening;

the first top protecting net is fixedly connected with the top of the cab body and used for covering the top of the cab body;

one side of the second top protecting net is hinged with the first top protecting net;

the linkage mechanism is connected between the first top protection net and the second top protection net and used for driving the second top protection net to synchronously rotate in the forward direction when the skylight rotates in the forward direction relative to the cab body and opens the skylight opening, or driving the second top protection net to synchronously rotate in the reverse direction when the skylight rotates in the reverse direction relative to the cab body and closes the skylight opening so as to cover the skylight.

In an alternative embodiment, the linkage mechanism comprises a linkage rod;

one end of the linkage rod is hinged with the skylight, and the other end of the linkage rod is hinged with the second top protecting net.

In an optional embodiment, a hinged support is arranged on the skylight, and a first shaft hole is arranged on the hinged support;

the linkage rod comprises a rod body and a first rotating shaft arranged at one end of the rod body in a bending mode, a first fixing hole is formed in the first rotating shaft, and the first rotating shaft penetrates through the first shaft hole;

the linkage mechanism further comprises a first fixing pin, and the first fixing pin is matched with the first fixing hole.

In an alternative embodiment, the linkage further comprises a first spacer;

the first gasket is sleeved on the first rotating shaft and arranged between the hinged support and the rod body.

In an alternative embodiment, a side plate is arranged on one side of the second top protecting net, and a second shaft hole is formed in the side plate;

the linkage rod comprises a rod body and a second rotating shaft arranged at one end of the rod body in a bending mode, a second fixing hole is formed in the second rotating shaft, and the second rotating shaft penetrates through the second shaft hole;

the linkage mechanism further comprises a second fixing pin, and the second fixing pin is matched with the second fixing hole.

In an alternative embodiment, the linkage further comprises a second spacer;

the second gasket is sleeved on the second rotating shaft and arranged between the side plate and the rod body.

In an optional implementation manner, a position-avoiding opening is formed in the first top protecting net, and the position of the position-avoiding opening corresponds to the position of the skylight opening;

when the skylight rotates forwards relative to the cab body and the skylight opening is opened, the skylight penetrates out of the avoidance opening;

when the skylight rotates reversely relative to the cab body and closes the skylight opening, the second top protection net rotates relative to the first top protection net and covers the avoidance opening.

In an alternative embodiment, the cab roof grille structure further comprises a grille fixing rib and a first hinge;

the guard net fixing rib is welded on the first top guard net, and the second top guard net is hinged with the guard net fixing rib through the first hinge.

In an alternative embodiment, the cab roof grille structure further comprises an air spring;

the air spring is arranged between the skylight and the cab body.

In a second aspect, an embodiment of the present invention provides a construction machinery apparatus, including a cab roof grille structure as described in any one of the foregoing embodiments.

The cab top guard net structure and the engineering mechanical equipment provided by the embodiment of the invention have the beneficial effects that: and the linkage of the skylight and the second top protecting net is realized through a linkage mechanism. When the skylight is opened, the skylight is pushed to rotate forwards relative to the cab body and the skylight opening is opened, the skylight drives the second top protection net to rotate forwards relative to the first top protection net through the linkage mechanism, and synchronous forward rotation with the skylight is realized; when the skylight is closed, the skylight is pulled down to rotate reversely relative to the cab body and close the skylight opening, the skylight drives the second top protection net to rotate reversely relative to the first top protection net through the linkage mechanism, synchronous reverse rotation with the skylight is achieved, the skylight is closed, and the skylight is covered by the second top protection net so as to protect the top area of the skylight. And the first top protecting net covers the top of the cab body to protect the top area of the cab body. Like this, can enough guarantee the safeguard function of first top protecting wire net and second top protecting wire net, can realize the function of opening in skylight again to second top protecting wire net and synchronous switching in skylight make the skylight need not to dismantle first top protecting wire net or second top protecting wire net when opening, open and close all very conveniently.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of a roof guard net structure of a cab according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the first top guard net of FIG. 1;

fig. 3 is a schematic view of a connection structure of the second guard net part in fig. 1 and guard net fixing ribs through first hinges;

FIG. 4 is a schematic view of the skylight of FIG. 1;

FIG. 5 is a schematic structural view of the linkage mechanism of FIG. 1;

fig. 6 is a schematic structural view of a sunroof of the cab roof grille structure of fig. 1 in an open state.

Icon: 10-cab roof guard net structure; 100-cab body; 110-day window; 200-skylight; 210-a hinged support; 211-a first shaft hole; 220-a second hinge; 300-a first top guard net; 310-avoiding opening; 320-a frame plate; 330-a first screen protection part; 340-a second wire protecting section; 400-a second top guard net; 410-side plate; 411-second shaft hole; 500-a linkage mechanism; 510-a linkage bar; 520-a rod body; 530-a first rotating shaft; 531-first fixing hole; 540-a second shaft; 541-a second fixing hole; 550-a first fixed pin; 560-a second fixing pin; 570-a first gasket; 580-a second gasket; 600-fixing ribs by using a protective net; 700-a first hinge; 800-air spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, the present embodiment provides a cab roof guard net structure 10 applied to a construction machinery (not shown). The engineering mechanical equipment can be an excavator, a bulldozer, a crane and the like. The construction machinery equipment comprises the cab roof grille structure 10 described above.

The cab roof guard net structure 10 includes a cab body 100, a sunroof 200, a first roof guard net 300, a second roof guard net 400, and a link mechanism 500.

The top of the cab body 100 is opened with a skylight opening 110. One side of the sunroof 200 is hinged to the cab body 100, and the sunroof 200 is used to open or close the sunroof 110. The first top guard net 300 is fixedly connected to the top of the cab body 100 and serves to cover the top of the cab body 100. One side of the second top guard net 400 is hinged to the first top guard net 300. The link mechanism 500 is connected between the first top guard net 300 and the second top guard net 400, and is configured to drive the second top guard net 400 to synchronously rotate in the forward direction when the sunroof 200 rotates in the forward direction relative to the cab body 100 and opens the sunroof opening 110, or drive the second top guard net 400 to synchronously rotate in the reverse direction when the sunroof 200 rotates in the reverse direction relative to the cab body 100 and closes the sunroof opening 110, so as to cover the sunroof 200.

The cab roof grille structure 10 according to the present embodiment realizes the interlocking of the sunroof 200 and the second roof grille 400 by the interlocking mechanism 500. When the skylight 200 is opened, the skylight 200 is pushed to rotate forward relative to the cab body 100 and the skylight opening 110 is opened, the skylight 200 drives the second top protecting net 400 to rotate forward relative to the first top protecting net 300 through the linkage mechanism 500, and synchronous forward rotation with the skylight 200 is realized. When the sunroof 200 is closed, the pull-down sunroof 200 rotates reversely relative to the cab body 100 and closes the sunroof opening 110, the sunroof 200 drives the second top guard net 400 to rotate reversely relative to the first top guard net 300 through the link mechanism 500, synchronous reverse rotation with the sunroof 200 is achieved, the sunroof 200 closes the sunroof opening 110 at this time, and the second top guard net 400 covers the sunroof 200 to protect the top area of the sunroof 200. And the first top guard net 300 covers the top of the cab body 100 to protect the top area of the cab body 100. Like this, can enough guarantee the safeguard function of first top protecting wire net 300 and second top protecting wire net 400, can realize the opening function of skylight 200 again to second top protecting wire net 400 and synchronous switching in skylight 200 make skylight 200 need not to dismantle first top protecting wire net 300 or second top protecting wire net 400 when opening, open and close all very conveniently.

It should be noted that, in the present embodiment, the terms "forward direction" and "reverse direction" are relative to each other, and indicate that the rotation directions of the skylight 200 during opening and closing are opposite, and the second top protecting net 400 rotates synchronously with the skylight 200, and the rotation directions are the same.

Referring to fig. 2, further, the first top guard net 300 is provided with a position-avoiding opening 310, and the position of the position-avoiding opening 310 corresponds to the position of the skylight opening 110. When the skylight 200 rotates forward relative to the cab body 100 and opens the skylight opening 110, the skylight 200 passes through the clearance opening 310. When the sunroof 200 rotates in the opposite direction with respect to the cab body 100 and closes the sunroof opening 110, the second top guard net 400 rotates with respect to the first top guard net 300 and covers the escape opening 310.

By providing the clearance opening 310, the sunroof 200 can pass through the clearance opening 310 during opening or closing, and thus the sunroof 200 should not be opened or closed. Optionally, the area of the clearance opening 310 is larger than the area of the skylight opening 110 so that the skylight 200 passes through the clearance opening 310. It should be understood that when the second top protecting net 400 covers the avoiding opening 310, the plane of the second top protecting net 400 is coplanar with the plane of the first top protecting net 300, so that the first top protecting net 300 and the second top protecting net 400 together form a complete top protecting net structure to protect the whole top area of the cab body 100. And the upper ends of the first top guard net 300 and the second top guard net 400 are flush, thereby achieving the purpose of beauty.

In this embodiment, the first top guard net 300 may include two frame plates 320, a first guard net part 330, and a second guard net part 340, which are arranged in parallel at an interval. The two frame plates 320 are detachably connected to the cab body 100 by bolts, respectively. The first mesh protecting portion 330 and the second mesh protecting portion 340 are both disposed between the two frame plates 320, and the first mesh protecting portion 330 is connected to the front portions of the two frame plates 320, and the second mesh protecting portion 340 is connected to the rear portions of the two frame plates 320. The first mesh protecting part 330 and the second mesh protecting part 340 are in a grid mesh shape. In this embodiment, since the sunroof 110 is opened at the front position of the top of the cab body 100, the area of the first mesh protecting portion 330 is smaller than the area of the second mesh protecting portion 340. The two frame plates 320, the first mesh protecting portion 330 and the second mesh protecting portion 340 together enclose the avoiding opening 310.

Referring to fig. 3, in the present embodiment, the left and right sides of the second top guard net 400 are provided with side plates 410, and the side plates 410 are used for being rotatably connected with the linkage mechanism 500. Wherein, a second shaft hole 411 is provided on the side plate 410 for the linkage mechanism 500 to cooperate, so as to realize that the linkage mechanism 500 rotates relative to the second top protecting net 400. Optionally, the cab roof grille structure 10 may further include a grille fixing rib 600 and a first hinge 700. The guard net fixing rib 600 is welded to the first top guard net 300, and one side of the second top guard net 400 is hinged to the guard net fixing rib 600 through a first hinge 700. In this embodiment, the guard net fixing rib 600 is a long strip structure with an L-shaped cross section. Both ends of the guard net fixing rib 600 are welded to the frame plate 320, respectively.

Referring to fig. 4, the skylight 200 is provided with a hinge support 210 for being hinged with a linkage 500. The hinge support 210 is provided with a first shaft hole 211 for cooperating with the link mechanism 500. In this embodiment, the hinge bracket 210 is disposed on a side surface of the sunroof 200 away from the cab body 100 so as to be hinged to the link mechanism 500. One side of the sunroof 200 is provided with a second hinge 220, and the sunroof 200 is hinged to the cab body 100 by the second hinge 220.

Referring to fig. 5, linkage 500 may include linkage bar 510. One end of the linkage bar 510 is hinged with the skylight 200, and the other end is hinged with the second top protecting net 400.

It should be noted that, in this embodiment, the skylight 200 and the second top protecting net 400 may be arranged substantially in parallel, and by providing the linkage rod 510, the skylight 200 and the second top protecting net 400 are kept parallel during the synchronous rotation process by using the working principle of the parallelogram four-bar mechanism. Optionally, in this embodiment, one end of the linkage rod 510 is connected to a side of the second top protecting net 400 far away from the first top protecting net 300, and the other end of the linkage rod 510 is connected to a position of the skylight 200 near a middle region thereof.

In addition, the number of the linkage rods 510 is not specifically limited, in this embodiment, two linkage rods 510 are provided and are respectively disposed on the left and right sides of the second top protecting net 400, and the two linkage rods 510 are disposed oppositely to ensure the movement effect of the second top protecting net 400 rotating synchronously with the skylight 200.

Of course, in other embodiments, the linkage mechanism 500 may also adopt other structures as long as the skylight 200 can drive the second top guard net 400 to rotate synchronously when being opened and closed.

In this embodiment, the linkage rod 510 includes a rod body 520, a first rotating shaft 530 and a second rotating shaft 540. The first shaft 530 is disposed at one end of the rod 520 in a bending manner, and the second shaft 540 is disposed at the other end of the rod 520 in a bending manner. The bending directions of the first rotating shaft 530 and the second rotating shaft 540 relative to the rod 520 are the same, that is, the extending direction of the end of the first rotating shaft 530 far away from the rod 520 is the same as the extending direction of the end of the second rotating shaft 540 far away from the rod 520. The first rotating shaft 530 passes through the first shaft hole 211 to be hinged to the sunroof 200, and the first rotating shaft 530 is provided with a first fixing hole 531. The second rotating shaft 540 passes through the second shaft hole 411 to be hinged to the second top guard net 400, and the second rotating shaft 540 is provided with a second fixing hole 541.

The linkage 500 may also include a first fixed pin 550 and a second fixed pin 560. Wherein the first fixing pin 550 is adapted to be engaged with the first fixing hole 531. The second fixing pin 560 is adapted to be engaged with the second fixing hole 541. In this embodiment, after the first rotating shaft 530 passes through the first shaft hole 211, the first fixing pin 550 passes through the first fixing hole 531 and is engaged with the first fixing hole 531, so as to limit the position of the first rotating shaft 530, and when the first rotating shaft 530 rotates relative to the hinge support 210, the first rotating shaft 530 cannot be disengaged from the first shaft hole 211. After the second rotating shaft 540 passes through the second shaft hole 411, the second fixing pin 560 passes through the second fixing hole 541 and is matched with the second fixing hole 541, so that the second rotating shaft 540 is limited, and when the second rotating shaft 540 rotates relative to the side plate 410, the second rotating shaft 540 cannot be pulled out from the second shaft hole 411.

Further, the linkage 500 may further include a first spacer 570 and a second spacer 580. The first spacer 570 is disposed on the first shaft 530 and between the hinge support 210 and the rod 520. The second spacer 580 is sleeved on the second rotating shaft 540 and disposed between the side plate 410 and the rod 520. The first gasket 570 plays a role in fixing and limiting the first rotating shaft 530, so as to ensure the rotating effect of the first rotating shaft 530; the second spacer 580 acts as a fixing and limiting function for the second rotating shaft 540, so as to ensure the rotating effect of the second rotating shaft 540.

Referring to fig. 6, in addition, the cab roof grille structure 10 may further include an air spring 800. Air spring 800 is provided between sunroof 200 and cab body 100. When the sunroof 200 is pushed open, the air spring 800 extends, so that the sunroof 200 rotates forward with respect to the cab body 100.

With continued reference to fig. 6, the working principle of the cab roof grille structure 10 provided in the present embodiment is described as follows:

when the skylight 200 is opened, the skylight 200 is pushed to rotate forwards relative to the cab body 100 and the skylight opening 110 is opened, at the moment, the air spring 800 extends, the skylight 200 drives the second top protecting net 400 to rotate forwards relative to the first top protecting net 300 through the linkage mechanism 500, the second top protecting net 400 is synchronously opened, and the synchronous forward rotation with the skylight 200 is realized.

When the sunroof 200 is closed, the pull-down sunroof 200 rotates reversely relative to the cab body 100 and closes the sunroof opening 110, at this time, the air spring 800 contracts, the sunroof 200 drives the second top protection net 400 to rotate reversely relative to the first top protection net 300 through the linkage mechanism 500, synchronous reverse rotation with the sunroof 200 is achieved, at this time, the sunroof 200 closes the sunroof opening 110, and the second top protection net 400 covers the sunroof 200 to protect the top area of the sunroof 200.

In summary, the cab roof guard net structure 10 and the engineering mechanical equipment provided in the embodiment of the present invention can ensure the protection function of the first roof guard net 300 and the second roof guard net 400, and can realize the opening function of the sunroof 200, and the second roof guard net 400 and the sunroof 200 are synchronously opened and closed, so that the sunroof 200 does not need to be detached from the first roof guard net 300 or the second roof guard net 400 when being opened, and the opening and closing are very convenient. The cab roof guard net structure 10 is simple in principle, convenient to install and strong in implementability.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.