Protective net device and operation machine
By incorporating hinges and telescopic components into the protective netting device, the problem of cumbersome disassembly and assembly of the protective netting has been solved, enabling convenient disassembly and assembly of the protective netting and easy cleaning of the front window, thus improving the ease of use of the operating machinery.
Patent Information
- Application Number
- CN202520718274.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-16
AI Technical Summary
The existing protective netting device is cumbersome to install and remove, making it difficult to clean and maintain the windshield and resulting in poor operational convenience.
Design a safety net device that is rotatably connected to the cab via a hinge. The hinge can be connected to or disconnected from the safety net body. The telescopic component retracts when connected and extends when disconnected to drive the safety net to rotate around the hinge, thereby achieving the rotation and support of the safety net body, increasing the distance between it and the windshield, and facilitating cleaning and maintenance.
It enables convenient installation and removal of the protective netting, increases the working space of the front window, simplifies the cleaning and maintenance process of the front window, and improves the convenience of operation.
Smart Images
Figure CN223890770U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of engineering machinery technology, and in particular to a protective netting device and operating machinery. Background Technology
[0002] A safety net is a protective device. Especially in the field of engineering machinery (such as mining, road construction, and urban construction), the working conditions are complex, diverse, and harsh, requiring the installation of a safety net in front of the cab to ensure the safety of the driver.
[0003] In related technologies, the cab's protective netting adopts a fixed structure or a bolt-fixed protective netting. The protective netting is connected to the fixed bracket or cab shell on the front side of the cab by bolts or welding, covering the light-transmitting area of the front window.
[0004] However, due to the harsh working conditions and high dust levels of construction machinery, the windshield of the cab needs to be cleaned to ensure visibility. The existing safety net makes cleaning the windshield difficult, and easily damaged parts such as the windshield wipers and the front sliding window require periodic removal of the window for maintenance and replacement. Therefore, the existing safety net is cumbersome to install and remove, making windshield cleaning and maintenance difficult and reducing operational convenience. Utility Model Content
[0005] This application provides a safety net device and operating machinery to solve the problem that the existing safety nets are cumbersome to install and remove, making it difficult to clean and maintain the windshield and resulting in poor operational convenience.
[0006] To achieve the above objectives, the technical solution of this application is as follows:
[0007] On one hand, this application provides a safety net device, comprising a safety net body; a hinge, the safety net body being rotatably connected to the cab of the operating machinery via the hinge; a connector, the connector being disposed on the cab and used to connect or disconnect from the safety net body; and a telescopic member, one end of which is connected to the safety net body and the other end of which is used to connect to the cab; the telescopic member is configured such that when the connector is connected to the safety net body, the telescopic member retracts, and when the connector is disconnected from the safety net body, the telescopic member extends to drive the safety net body to rotate around the hinge to move away from the cab and to support the safety net body.
[0008] In one possible implementation, the safety net device in this application embodiment includes a hinge shaft, a first hinge plate, and a second hinge plate. The hinge shaft passes through the first hinge plate and the second hinge plate in sequence. The first hinge plate is connected to the cab, and the second hinge plate is connected to the safety net body. The second hinge plate rotates relative to the first hinge plate about the axis of the hinge shaft.
[0009] In one possible implementation, the protective net device in this application embodiment further includes a bushing, which is sleeved on the hinge shaft and connected to the first hinge plate.
[0010] In one possible implementation, the protective net device in this application embodiment further includes gaskets, which are disposed on both sides of the second hinge plate along its length, and are used to abut against the end face of the first hinge plate or the end face of the hinge shaft.
[0011] In one possible implementation, the safety net device in this application embodiment includes a latch, a lock body, and a lock body fixing plate as the connecting member. The lock body has a limiting space, the latch is used to be set in the limiting space, the latch is connected to the safety net body, the lock body is set on the lock body fixing plate, and the lock body fixing plate is connected to the cab.
[0012] In one possible implementation, the protective net device in this application embodiment has a driving member and two limiting parts on the lock body. The two limiting parts are arranged opposite to each other and surround to form a limiting space. The latch is located in the limiting space. The lock body also includes a driving member connected to the two limiting parts. The driving member extends to drive the two limiting parts to move away from each other to open the limiting space. The driving member compresses to drive the two limiting parts to move closer to each other to close the limiting space.
[0013] In one possible implementation, the safety net device in this application embodiment further includes a buffer member in the connector. The buffer member is disposed on the lock body fixing plate and located on one side of the latch. The buffer member is used to abut against the safety net body or the cab.
[0014] In one possible implementation, the protective netting device in this application embodiment has a buffer element that is tilted.
[0015] In one possible implementation, the telescopic component of the protective netting device in this application embodiment is a gas spring.
[0016] On the other hand, this application provides a working machine, including a body and a protective net device as described in any of the above embodiments disposed on the body.
[0017] This application provides a safety net device and operating machinery. The safety net device comprises: a safety net body; a hinge, through which the safety net body is rotatably connected to the cab of the operating machinery; a connecting member, which is mounted on the cab and is connected to or detached from the safety net body; and a telescopic member, one end of which is connected to the safety net body and the other end of which is connected to the cab. The telescopic member is configured such that when the connecting member is connected to the safety net body, the telescopic member retracts; and when the connecting member is detached from the safety net body, the telescopic member extends to drive the safety net body to rotate around the hinge to move away from the cab and support the safety net body. This application uses the connecting member to connect the safety net body to the cab, preventing the safety net body from moving relative to the cab. The safety net body achieves rotational movement via the hinge, allowing it to move away from or closer to the cab's front window. In the protective state, the connecting member is connected to the safety net body, and the telescopic member is in a compressed state, locking the safety net body in the protective position and ensuring that the safety net body provides protection during engineering operations. When it is necessary to open the safety net body (such as to maintain or clean the cab's front window), the constraint of the connector is released, and one end of the safety net body is detached from the connector. One end of the safety net body can rotate around the hinge. The telescopic component extends to drive one end of the safety net body to rotate around the hinge. When the safety net body is unfolded and rotated to a preset angle, it forms a support, keeping the safety net body stable and suspended. This significantly increases the distance between the safety net body and the front window, ensuring sufficient working space for the cab's front window and reducing obstruction, so that the operator can clean or maintain the front window. Attached Figure Description
[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0019] Figure 1 This is a structural schematic diagram of the safety net device and driver's cab provided in the embodiments of this application;
[0020] Figure 2 for Figure 1 Schematic diagram of the middle hinge component;
[0021] Figure 3 for Figure 1 Schematic diagram of the middle connector;
[0022] Figure 4 for Figure 3 A schematic diagram of the connection between the central lock body and the latch.
[0023] Explanation of reference numerals in the attached figures:
[0024] 10-Driver's cab;
[0025] 100-Network body;
[0026] 200 - Hinged joint;
[0027] 210 - Hinged shaft;
[0028] 220 - First hinge plate;
[0029] 230 - Second hinge plate;
[0030] 240-shaft sleeve;
[0031] 250-shield;
[0032] 300-Connector;
[0033] 310-Lock;
[0034] 320 - Lock body; 321 - Limiting part; 322 - Driving component;
[0035] 330 - Lock body fixing plate;
[0036] 340 - Buffer component;
[0037] 400 - Telescopic component.
[0038] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation
[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0040] It should be noted that in the description of the embodiments of this application, the terms "upper", "lower", "inner", "outer" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and are not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.
[0041] Furthermore, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0043] A safety net is a protective device. Especially in the field of engineering machinery (such as mining, road construction, and urban construction), the working conditions are complex, diverse, and harsh, requiring the installation of a safety net in front of the cab to ensure the safety of the driver.
[0044] In existing technologies, the cab's safety net uses a fixed structure or a bolt-fixed net, which is connected to a fixed bracket or cab shell on the front side of the cab by bolts or welding, covering the light-transmitting area of the windshield. However, due to the harsh working conditions and high dust levels of construction machinery, the windshield of the cab needs to be cleaned to ensure operational visibility. Existing safety nets make windshield cleaning difficult, and easily damaged parts such as wipers and the windshield shutters require periodic removal of the windshield shutters for maintenance and replacement. Therefore, the existing safety nets are cumbersome to install and remove, making windshield cleaning and maintenance difficult and reducing operational convenience.
[0045] In view of this, this application provides a safety net device and a working machine. The safety net device includes a safety net body; a hinge, through which the safety net body is rotatably connected to the cab of the working machine; a connector, which is mounted on the cab and is connected to or disconnected from the safety net body; and a telescopic member, one end of which is connected to the safety net body and the other end of which is connected to the cab. The telescopic member is configured such that when the connector is connected to the safety net body, the telescopic member retracts; and when the connector is disconnected from the safety net body, the telescopic member extends to drive the safety net body to rotate around the hinge to move away from the cab and to support the safety net body. This application uses the connector to connect the safety net body to the cab, preventing the safety net body from moving relative to the cab. The safety net body forms a rotating pair with the cab through the hinge, and is normally locked in a protective position by the connector, ensuring that the safety net body provides protection during engineering operations. When the safety net body needs to be opened (such as for maintaining or cleaning the cab's front window), the constraint of the connector is released, and one end of the safety net body disengages from the connector, thus unlocking it. One end of the safety net body can rotate around the hinge. The telescopic component extends to drive one end of the safety net body to rotate around the hinge, and forms a rigid support when the safety net body is unfolded to a preset angle, keeping the safety net body stable and hovering. This significantly increases the distance between the safety net and the front window, allowing the cab's front window to be opened, ensuring sufficient working space, reducing obstruction, and enabling operators to clean or maintain the front window.
[0046] The following is combined with Figures 1 to 4 The present application will be described in detail with reference to specific embodiments.
[0047] On one hand, this application provides a safety net device, comprising a safety net body 100; a hinge 200, the safety net body 100 being rotatably connected to the cab 10 of the operating machinery via the hinge 200; a connector 300, the connector 300 being mounted on the cab 10, the connector 300 being connected to or disconnected from the safety net body 100; and a telescopic member 400, one end of the telescopic member 400 being connected to the safety net body 100, and the other end being connected to the cab 10; the telescopic member 400 is configured such that when the connector 300 is connected to the safety net body 100, the telescopic member 400 retracts, and when the connector 300 is disconnected from the safety net body 100, the telescopic member 400 extends to drive the safety net body 100 to rotate around the hinge 200 away from the cab 10, and to support the safety net body 100.
[0048] The protective net body 100 is used to install the front window of the cab 10 of the operating machinery.
[0049] The safety net body 100 is rotatably connected to the cab 10 of the operating machinery via the hinge 200. The safety net body 100 is connected to the cab 10 via the connector 300.
[0050] The connector 300 includes a latch and a lock body. The latch is used to connect to the lock body. One of the latch and the lock body is connected to the guardrail body, and the other of the latch and the lock body is connected to the outer shell of the cab. For example, the latch is connected to the guardrail body by bolts, the lock body is connected to the outer shell of the cab by a lock body fixing plate, the lock body is connected to the lock body fixing plate by bolts, and the lock body fixing plate is connected to the outer shell of the cab by bolts; or, the lock body is connected to the guardrail body by the lock body fixing plate, and the latch is connected to the outer shell of the cab by bolts.
[0051] When the latch disengages from the lock body, the protective net body 100 can move relative to the cab, allowing one end of the protective net body 100 to rotate around the hinge 200 to detach from the cab, thus increasing the space in the cab's front window for cleaning or maintenance.
[0052] This application does not impose any restrictions on the structure of the telescopic component 400, which can be a gas spring.
[0053] A telescopic member 400 is provided, with one end connected to the safety net body 100 and the other end connected to the driver's cab 10. The telescopic member 400 is disposed between the connector 300 and the hinge 200, and the connection end between the telescopic member 400 and the safety net body 100 is located in the middle of the safety net body 100. Furthermore, this application does not limit the telescopic direction of the telescopic member 400. For example, the telescopic direction of the telescopic member 400 forms an acute angle with the extension direction of the safety net body 100. Of course, the telescopic direction of the telescopic member 400 can also be aligned with the direction of gravity.
[0054] The telescopic component 400 is used to drive one end of the protective net body 100 away from the cab and to support the protective net body 100 in a certain rotational position so as to clean or maintain the windshield.
[0055] The telescopic member 400 is configured such that when the protective net body 100 is disengaged from the connector 300, one end of the protective net body 100 rotates around the hinge 200, and the telescopic member 400 extends to support the protective net body 100 away from the cab 10; when the protective net body 100 is locked with the connector 300, the telescopic member 400 is in a compressed state, and the protective net body 100 is positioned in front of the cab 10, thus protecting the cab 10.
[0056] In this embodiment of the application, the safety net device connects the safety net body 100 to the cab via a connector 300, preventing the safety net body 100 from moving relative to the cab. The safety net body 100 forms a rotating pair with the cab 10 via a hinge 200, and is normally locked in the protective position by the connector 300, ensuring that the safety net body 100 provides protection during engineering operations. When the safety net body 100 needs to be opened (such as for maintaining or cleaning the cab's front window), the constraint of the connector 300 is released, and one end of the safety net body 100 is disengaged from the connector 300, thus unlocking it. One end of the safety net body 100 can rotate around the hinge 200, and the telescopic member 400 extends to drive one end of the safety net body 100 to rotate around the hinge 200. When the safety net body 100 is unfolded to a preset angle, it forms a rigid support, keeping the safety net body 100 stable and suspended. This significantly increases the distance between the safety net and the front window, allowing the cab's front window to be opened, ensuring sufficient working space, reducing obstruction, and enabling operators to clean or maintain the front window.
[0057] The hinge 200 includes a hinge shaft 210, a first hinge plate 220, and a second hinge plate 230. The hinge shaft 210 passes through the first hinge plate 220 and the second hinge plate 230 in sequence. The hinge shaft 210 includes a stop and a rotating shaft. The stop is connected to the rotating shaft and is located at one end of the rotating shaft.
[0058] This application does not limit the shape and structure of the stop portion; an exemplary stop portion can be a stop block or a stop post. The diameter of the stop portion is larger than the diameter of the rotating shaft, and the stop portion has a limiting end face for abutting against the first hinge plate 220. The first hinge plate 220 is provided with a first connecting hole, and the second hinge plate 230 is provided with a second connecting hole. The rotating shaft passes through the first connecting hole and the second connecting hole in sequence, thereby connecting the hinge shaft 210 to the first hinge plate 220 and the second hinge plate 230. The first hinge plate 220 is located between the stop portion and the second hinge plate 230.
[0059] The hinge shaft 210 is connected to the first hinge plate 220, the hinge shaft 210 is hinged to the second hinge plate 230, the first hinge plate 220 is connected to the cab 10, the second hinge plate 230 is connected to the guard net body 100, and the second hinge plate 230 rotates relative to the first hinge plate 220 around the axis of the hinge shaft 210.
[0060] To enable the hinge shaft 210 to rotate smoothly, a bushing 240 is also included. The bushing 240 is fitted onto the hinge shaft 210 and connected to the first hinge plate 220. The bushing 240 is a hollow cylinder with an inner hole. The rotating shaft section of the hinge shaft 210 passes through the inner hole of the bushing 240, forming a low-friction sliding pair.
[0061] During installation of the hinge shaft 210, the bushing 240 is pressed into the first connecting hole of the first hinge plate 220, and the rotating shaft segment of the hinge shaft 210 passes sequentially through the inner hole of the bushing 240 and the second connecting hole of the second hinge plate 230. Finally, the limiting end face of the adjustment stop is fitted with the outer surface of the first hinge plate 220. It should be noted that the hinge shaft 210 is embedded in the first hinge plate 220, which reduces the rotational friction of the hinge shaft 210 and extends its service life.
[0062] In addition, this application also includes a gasket 250, which is respectively disposed on both sides of the second hinge plate 230 along the length direction. The gasket 250 is used to abut against the end face of the first hinge plate 220 or the end face of the hinge shaft 210.
[0063] For example, there are two gaskets 250, each gasket 250 is respectively disposed on both sides of the second hinge plate 230, and each gasket 250 is used to abut against the end face of the first hinge plate 220 or the end face of the hinge shaft 210. The opposite sides of the second hinge plate 230 are respectively disposed opposite to the end faces of the first hinge plate 220 and the end faces of the hinge shaft 210. One side of one gasket 250 abuts against the limiting end face, and the other side abuts against the end face of the second hinge plate 230, which plays a role in reducing friction and protection. One side of the other gasket 250 abuts against the first hinge plate 220, and the other side of the other gasket 250 abuts against the second hinge plate 230. This application does not limit the shape and arrangement of the gaskets 250. For example, each gasket 250 may be disposed around the periphery of the second connecting hole. Optionally, the connector 300 includes a latch 310, a lock body 320, and a lock body fixing plate 330. The lock body 320 has a limiting space, the latch 310 is used to be set in the limiting space, the latch 310 is connected to the guard net body 100, the lock body 320 is set on the lock body fixing plate 330, and the lock body fixing plate 330 is connected to the cab 10.
[0064] The lock body 320 is provided with a drive member 322 and two limiting parts 321. The two limiting parts 321 are arranged opposite each other and surround to form a limiting space. The latch 310 is located in the limiting space. The lock body 320 also includes a drive member 322, which is connected to the two limiting parts 321. The drive member 322 extends to drive the two limiting parts 321 to move away from each other to open the limiting space. The drive member 322 compresses to drive the two limiting parts 321 to move closer together to close the limiting space.
[0065] One end of the drive member 322 is also provided with an unlocking handle. When unlocking, the operator applies force to the unlocking handle, which transmits the force to the drive member 322, causing it to extend. This extension drives the two limiting parts 321 away from each other to open the limiting space, unlocking the latches 310 and 310, thus facilitating disengagement. When locking, the operator releases force on the unlocking handle, and the drive member 322, under elastic action, switches from an extended state to a compressed state, causing the two limiting parts 321 to move closer together to close the limiting space, thus locking the latches 310 and 310.
[0066] The unlocking handle is an unlocking paddle, the driving component 322 is a torsion spring, the lock body 320 is provided with a connecting shaft, the torsion spring is wound around the connecting shaft, one end of the torsion spring is connected to the unlocking paddle, and the other end is connected to the housing of the lock body 320. The end of the unlocking paddle is connected to the fixed shaft, the fixed shaft is connected to the ratchet pawl, and the limiting part 321 is a ratchet. Each ratchet is provided with at least two ratchet teeth, and the two ratchet teeth correspond to the unlocking position and the locking position respectively. When the ratchet pawl moves to the unlocking position, the limiting space is opened, and when the ratchet pawl moves to the locking position, the limiting space is closed. The operator applies force to the unlocking lever, causing it to rotate around the center of the torsion spring, i.e., the axis of the connecting shaft. The end of the unlocking lever connects to a fixed shaft, which in turn connects to a ratchet pawl. This fixed shaft drives the ratchet pawl to move relative to the ratchet. When the ratchet pawl moves from the locked position to the unlocked position, it opens the limiting space, allowing the latch to disengage from the lock body. After disengagement, the operator releases force from the unlocking lever, which resets under the elastic action of the torsion spring, causing the ratchet pawl to reset and move from the unlocked position to the locked position. It should be noted that two ratchets can also be symmetrically arranged on the lock body 320 via torsion springs, enabling the ratchet to move and reset, thus opening or closing the limiting space.
[0067] The unlocking and locking mechanisms operate as follows: During unlocking, the operator applies force to the unlocking lever, causing it to rotate around the connecting shaft, which in turn displaces the fixed shaft and the ratchet pawl. The ratchet pawl disengages from the ratchet teeth in the locking position and slides along the ratchet tooth surface to the ratchet teeth in the unlocking position, pushing the two limiting parts 321 apart and expanding the limiting space, allowing the latch 310 to disengage from the lock body 320. During locking, after the external force is removed, the torsion spring releases its elastic potential energy, driving the unlocking lever to reset in the opposite direction. The ratchet pawl, under the action of the reset force, slides back along the ratchet tooth surface to the locking position. The two limiting parts 321 move closer together, closing the limiting space and constraining the latch 310.
[0068] In this embodiment, the unlocking action can be completed with a single application of force by linking the unlocking lever with the torsion spring, without the need for complicated tools or operations.
[0069] In addition, the connector 300 also includes a buffer 340, which is disposed on the lock body fixing plate 330 and located on one side of the latch 310. The buffer 340 is used to abut against the guard net body 100 or the cab 10.
[0070] To ensure a secure connection between the safety net body 100 and the cab 10, the buffer element 340 is pressed tightly against the safety net body 100, providing a cushioning effect and limiting the movement of the safety net in the left-right and front-back directions. This improves the reliability of the closed state of the safety net body 100 and ensures a secure connection between the safety net body 100 and the cab 10. The buffer element 340 can be a buffer capsule.
[0071] The buffer element 340 is inclined and arranged obliquely in the horizontal direction to compress the protective net body 100. The buffer element 340 is a capsule-shaped elastomer, such as a buffer capsule, arranged obliquely in the horizontal direction, with its contact surface with the protective net body 100 at an inclined angle. The buffer element 340 generates a continuous clamping force through compression deformation, restricting the displacement of the protective net body 100 in the horizontal plane, such as in the X and Y directions. When the protective net body 100 is subjected to external impact, the buffer capsule absorbs vibration energy through elastic deformation; the inclined buffer element 340 generates resistance in the opposite direction of the protective net's movement due to shear deformation, limiting its horizontal displacement.
[0072] Optionally, the telescopic component 400 can be a gas spring. This application also includes a mounting base, with one end of the gas spring connected to the cab 10 via the mounting base, and the other end connected to the guardrail body 100. The gas spring is tilted. The gas spring has a cylinder and a piston rod; the cylinder drives the piston rod to extend and retract. After the guardrail body 100 is unlocked, the gas spring releases internal air pressure to push the piston rod to extend, ensuring a uniform unfolding speed. When the guardrail body 100 rotates to the target angle, the gas spring reaches its maximum stroke. The internal self-locking mechanism of the gas spring prevents the piston rod from retracting, forming a rigid support to maintain the guardrail body 100 in a suspended state. During closure, an external force is manually applied to compress the gas spring, overcoming the internal air pressure resistance. The gas spring contracts at a uniform speed, achieving a slow reset of the guardrail, avoiding closing impact. After the guardrail body 100 resets to the closed position, the guardrail body 10 and the connecting component 300 are manually locked, and the gas spring returns to its compressed, stored-energy state. In addition, the tilting setting of the gas spring can decompose the thrust into tangential and normal components, which are consistent with the rotational tangential direction of the protective net body 100. This provides an auxiliary unfolding force to counteract the self-weight of the protective net body 100, reducing the operating thrust requirement. Perpendicular to the rotational direction, the thrust is transmitted to the cab 10 structure through the mounting bracket, preventing radial offset of the protective net body 100.
[0073] On the other hand, this application provides a working machine, including a body and a protective net device as described in any of the above embodiments disposed on the body.
[0074] This application does not limit the type of operating machinery; it can be engineering machinery such as excavators and bulldozers. This application does not limit the number of hinges 200, connectors 300, and telescopic members 400. For example, there can be two hinges 200, two connectors 300, and two telescopic members 400. The two hinges 200 are symmetrically arranged on both sides of the guardrail body 100 along its width direction; the two connectors 300 are symmetrically arranged on both sides of the guardrail body 100 along its width direction; and the two telescopic members 400 are symmetrically arranged on both sides of the guardrail body 100 along its width direction.
[0075] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.
[0076] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A protective netting device, characterized in that, include: Protective net body; A hinge, wherein the guard net body is used to rotatably connect with the cab of the operating machinery via the hinge; A connector, which is disposed on the cab, is used to connect to or disconnect from the guardrail body; A telescopic component, one end of which is connected to the protective net body, and the other end of which is used to connect to the driver's cab; The telescopic member is configured such that when the connector is connected to the safety net body, the telescopic member retracts, and when the connector is disconnected from the safety net body, the telescopic member extends to drive the safety net body to rotate about the hinge to move away from the cab and to support the safety net body.
2. The protective netting device according to claim 1, characterized in that, The hinge includes a hinge shaft, a first hinge plate, and a second hinge plate. The hinge shaft passes through the first hinge plate and the second hinge plate in sequence. The first hinge plate is used to connect with the cab, and the second hinge plate is connected with the guard net body. The second hinge plate rotates relative to the first hinge plate about the axis of the hinge shaft.
3. The protective netting device according to claim 2, characterized in that, It also includes a bushing, which is sleeved on the hinge shaft and connected to the first hinge plate.
4. The protective netting device according to claim 2, characterized in that, It also includes gaskets, which are disposed on both sides of the second hinge plate along its length, and are used to abut against the end face of the first hinge plate or the end face of the hinge shaft.
5. The protective netting device according to any one of claims 1-4, characterized in that, The connector includes a latch, a lock body, and a lock body fixing plate. The lock body has a limiting space. The latch is used to connect or disconnect from the limiting space. The lock body is disposed on the lock body fixing plate. One of the latch and the lock body fixing plate is connected to the guardrail body, and the other of the latch and the lock body fixing plate is used to connect to the cab.
6. The protective netting device according to claim 5, characterized in that, The lock body is provided with a driving member and two limiting parts. The two limiting parts are arranged opposite to each other and surround the limiting space. The lock body also includes a driving member, which is connected to the two limiting parts. The driving member extends to drive the two limiting parts to move away from each other to open the limiting space. The driving member compresses to drive the two limiting parts to move closer to each other to close the limiting space.
7. The protective netting device according to claim 5, characterized in that, The connector also includes a buffer, which is disposed on the lock body fixing plate and located on one side of the latch. The buffer is used to abut against the guard net body or the cab.
8. The protective netting device according to claim 7, characterized in that, The buffer is tilted.
9. The protective netting device according to any one of claims 1-4, characterized in that, The telescopic component is a gas spring.
10. A type of operating machinery, characterized in that, It includes a body and a protective net device as described in any one of claims 1-9 disposed on the body.