Cab protection device with adjustable height

Abstract

The utility model discloses a height-adjustable cab protection device, and relates to the technical field of truck carriage protection. Comprising a supporting frame body and a protective frame body; the protection frame body comprises a safety frame main body and a first protection assembly; the safety frame body is connected to the upper portion of the supporting frame body through a telescopic assembly. The first protection assembly is connected between the safety frame body and the supporting frame body and used for separating a front plate of a compartment from a cab. The supporting frame body is welded and connected to the front end of the carriage front plate; the supporting frame body is connected with a plate lock which is used for mutually pressing the side wall of the supporting frame body and the side wall of the safety frame main body; the connecting strength of the whole protection device is enhanced, impact and vibration can be resisted, the telescopic movement of the safety frame body relative to the supporting frame body adjusts the height of the first protection assembly relative to the carriage front plate, and therefore protection of different vehicle types is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of truck compartment protection, and in particular relates to a height-adjustable cab protection device. Background Art

[0002] Light cargo trucks are widely used in the logistics and transportation industry. The transported goods are concentrated in the truck compartment, and the cab is located at the front of the compartment. In order to ensure the safety of the occupants in the cab, it is usually necessary to install a safety rack between the cab and the compartment. And in order to play a safety protection role, it is usually necessary to make the height of the safety rack higher than the height of the cab. Since there are many types of light cargo trucks, it is necessary to install a matching safety rack for each type of truck, which makes the versatility of the safety rack low, and the processing, manufacturing and installation costs of the safety rack increase accordingly. For example, the existing patent application number is 202021510838.2, and the patent name is a cab protection enclosure for buses, which discloses a left-mounted fixed bracket of a bottom-mounted small drive motor, a right-mounted fixed bracket, and a central flip isolation frame with a built-in transparent lifting protective cover plate; the structure involved is complex, including electrical appliances, frames and other structures, and occupies a large area; and the meshing gears connected to the bottom of the lead screw suspension are not suitable for long-term use of trucks, because trucks have complex driving conditions, and there will be intrusion of dust, sand and pollutants, and sometimes there will be vibrations and collisions. Long-term use can easily cause wear between gears, causing the transmission to be affected, and the service life of the protective enclosure is reduced. Therefore, the prior art lacks a protective device that is simple in structure, easy to operate, can resist impact and vibration, and can adapt to complex working conditions. Utility Model Content

[0003] The utility model provides a height-adjustable cab protection device to solve the problems of complex structure, inconvenient installation, large occupied space and inability to adapt to complex environments.

[0004] The technical solution adopted by the utility model is:

[0005] A height-adjustable cab protection device comprises a supporting frame and a protection frame; the protection frame comprises a safety frame body and a first protection component; the safety frame body is connected to the top of the supporting frame body through a telescopic component; the first protection component is connected between the safety frame body and the supporting frame body, and is used to block the front plate of the vehicle compartment and the cab; the supporting frame body is welded to the front end of the front plate of the vehicle compartment; the supporting frame body is connected to a plate lock, and is used to press the side wall of the supporting frame body and the side wall of the safety frame body against each other.

[0006] The height-adjustable cab protection device of the utility model also has the following additional technical features:

[0007] The protection frame also includes a second protection component; the second protection component is connected to the support frame; one end of the first protection component along the vertical direction is connected to the safety frame body, and the other end of the first protection component along the vertical direction is slidably connected to the second protection component.

[0008] The safety frame body is provided with a telescopic part, through which the safety frame body can be extended or shortened along the width direction of the front panel of the vehicle; the first protection component includes a plurality of columns, and one end of the column along the vertical direction is slidably connected to the telescopic part by cooperating with a guide rail and a slider.

[0009] The second protection component includes a protection chassis, multiple protection cross bars and multiple protection blocks; the support frame is connected to both sides of the car front plate, and the protection chassis is connected between the two support frames; the protection cross bars are connected between the two support frames, and the protection cross bars have a telescopic rod, through which the protection cross bars can be extended or shortened along the width direction of the car front plate; the protection block is slidably connected to the protection chassis, and the protection block has an installation groove for passing through multiple protection cross bars, and the top of the protection block has a sliding groove for sliding connection to the column.

[0010] The protective block is connected to a protrusion at one end facing the protective base, and the protective base is provided with a groove slidably connected to the protrusion; or, the protective block is provided with a groove at one end facing the protective base, and the protective base is connected to a protrusion slidably connected to the groove.

[0011] The second protection component includes a protection base frame, multiple protection cross bars and multiple protection blocks; the support frame is connected to both sides of the front plate of the car body, and the protection base frame is connected between the two support frames; the protection cross bars are connected between the two support frames; multiple protection blocks are respectively connected to the protection cross bars and distributed along the length direction of the protection cross bars, and a sliding groove is opened in the protection block for the first protection component to slide up and down.

[0012] A plurality of protection blocks are connected to a side of the protection railing away from the front plate of the carriage; or, a plurality of protection blocks are connected through a plurality of protection railings, and an end of the protection block away from the protection chassis can extend out of the plurality of protection railings.

[0013] The telescopic assembly includes a fixing plate and a fixing piece; the fixing plate is connected to the inner side of the safety frame body, the support frame body has a connecting groove for the safety frame body and the fixing plate to slide up and down, the safety frame body has a plurality of adjustment holes penetrating the fixing plate, and the support frame body is provided with a plurality of mounting holes corresponding to the adjustment holes, and the height of the safety frame body relative to the support frame body can be adjusted by inserting the fixing piece into the corresponding adjustment holes and the mounting holes.

[0014] The telescopic assembly includes a hydraulic cylinder. A connecting groove for the safety frame body to slide up and down is provided inside the support frame body, and the hydraulic cylinder is connected to the connecting groove; the piston rod of the hydraulic cylinder is connected to the safety frame body, and the height of the safety frame body relative to the support frame body is adjusted by the piston rod.

[0015] At least one side of the protection frame is connected to a pedal, and a reserved groove for stepping on is provided in the pedal.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0017] 1. The support frame designed in the present application is used for welding connection with the front plate of the carriage, so as to enhance the connection strength of the entire protective device, resist impact and vibration, and further enhance the protection strength of the cab; the support frame, as a structure for supporting and connecting the protective frame, can further enhance the connection strength with the protective frame, enhance the protection performance of the protective frame, and effectively realize the barrier effect of the protective frame between the cab and the front plate of the carriage; the safety frame body of the protective frame can be telescopically connected relative to the support frame, and since the first protection component is connected to the safety frame body, the height of the first protection component relative to the front plate of the carriage can be adjusted by the telescopic movement of the safety frame body relative to the support frame, so as to achieve protection for different vehicle models, and improve the adaptability and versatility of the device; since the protective frame and the support frame can generate relative movement, and there is a certain gap between the protective frame and the support frame, the support frame and the protective frame can be mutually abutted by the setting of the plate lock, so that the support frame and the protective frame are tightly connected, further improving the connection strength between the support frame and the protective frame, and further resisting external impact and vibration, avoiding vibration wear of the protective device, and further improving the service life.

[0018] 2. As a preferred embodiment of the utility model, the protective frame body also includes a second protective component; the second protective component is connected to the support frame body; one end of the first protective component along the vertical direction is connected to the main body of the safety frame, and the other end of the first protective component along the vertical direction is slidably connected to the second protective component. By setting the second protective component, the lateral protection of the protective device can be further enhanced. The first protective component mainly realizes the protection between the support frame body and the main body of the safety frame, that is, the vertical direction, thereby further increasing the protection area and increasing the strength of the protection; the second protective component is connected to the support frame body, as the protection of the bottom side of the protective device, one end of the first protective component can be slidably connected to the second protective component, so that when the main body of the safety frame moves relative to the main body of the support frame along the vertical direction, the first protective component can move synchronously with the main body of the safety frame under the action of the main body of the safety frame, thereby realizing the adjustment of the height of the protective device, which can adapt to the height requirements of different vehicle models and improve the applicability of the protective device.

[0019] 3. As a preferred embodiment of the present invention, the safety frame body is provided with a telescopic part, through which the safety frame body is extended or shortened along the width direction of the front panel of the vehicle compartment; the first protection component includes a plurality of columns, and one end of the column along the vertical direction is slidably connected to the telescopic part by means of a guide rail and a slider. The telescopic part is provided on the safety frame body, so that the safety frame body can perform telescopic movement along the width direction of the front panel of the vehicle compartment, thereby realizing that the safety frame body can grow or shorten horizontally, and the safety frame body can adapt to vehicle models of different widths, thereby further improving the applicability of the protection device and improving the user experience of the protection device; the first protection component includes a plurality of columns, and the columns, as vertical protective parts, can move along the telescopic part of the safety frame body, so that when the safety frame body performs telescopic movement, the corresponding columns can also be adaptively adjusted according to the width of the safety frame body, so as to achieve uniform shielding of the cab in the width direction of the front panel of the vehicle compartment, thereby enhancing the protection effect.

[0020] 4. As a preferred embodiment of the present invention, the second protection component includes a protection chassis, a plurality of protection rails and a plurality of protection blocks; the protection rails have telescopic rods. By setting up a protection chassis, it is used to further strengthen the connection between the support frames on both sides of the front panel of the car body, the protection rails further realize the lateral protection function of the protection device, and the protection rails have telescopic rods, which further realize that the protection rails can be extended or shortened in the length direction, so as to achieve corresponding extension or shortening following the main body of the safety frame to meet the needs of various vehicle models; the protection block can be slidably connected to the protection chassis, and the protection block has a sliding groove slidably connected to the column, so that the column can interact up and down relative to the protection block, and the protection block is used to support the column; in order to realize the linkage of the protection block and the column to slide along the main body of the safety frame together, an installation groove for multiple protection rails to pass through is provided inside the protection block, and the protection block can move along the length direction of the protection rail without interfering with the protection rail.

[0021] 5. As a preferred embodiment of the utility model, the protective block is connected to a protrusion at one end facing the protective chassis, and the protective chassis is provided with a groove slidably connected to the protrusion; or, the protective block is provided with a groove at one end facing the protective chassis, and the protective chassis is connected to a protrusion slidably connected to the groove. In order to further improve the smooth connection between the protective block and the protective chassis, so that the protective block can slide smoothly along the protective chassis, there can be two implementation methods, one of which is to provide a protrusion at the bottom of the protective block, and provide a groove on the protective chassis, and the protrusion is matched with the groove, so that the protective block slides along the protective chassis; the other implementation method is to provide a groove at the bottom of the protective block, and provide a protrusion on the protective chassis that matches the groove, so that the protective block slides along the protective chassis and the position of the protective block can be limited, thereby further enhancing the connection between the protective block and the protective chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a side view structural diagram of a height-adjustable cab protection device at a first angle in one embodiment of the utility model;

[0024] Figure 2 A side structural diagram of a height-adjustable cab protection device at another angle in one embodiment of the utility model;

[0025] Figure 3A side structural diagram of a height-adjustable cab protection device connected to a second protection component in one embodiment of the utility model;

[0026] Figure 4 for Figure 2 A local enlarged view of point A;

[0027] Figure 5 A structural diagram of a height-adjustable cab protection device support frame and a safety frame body connection in one embodiment of the utility model;

[0028] In the figure,

[0029] 1. Support frame;

[0030] 2 protection frame body, 21 safety frame body, 22 first protection component, 23 second protection component, 231 protection base frame, 232 protection horizontal bar, 233 protection block;

[0031] 3 slide groove, 4 connecting groove, 5 fixing plate, 6 fixing piece, 7 footrest, 8 plate lock, 9 adjustment hole, 10 notch. DETAILED DESCRIPTION

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0036] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0037] The utility model relates to a height-adjustable cab protection device, such as Figure 1-5 As shown, it includes a supporting frame body 1 and a protective frame body 2; the protective frame body 2 includes a safety frame body 21 and a first protective component 22; the safety frame body 21 is connected to the top of the supporting frame body 1 through a telescopic component; the first protective component 22 is connected between the safety frame body 21 and the supporting frame body 1, and is used to block the front plate of the vehicle compartment and the cab; the supporting frame body 1 is welded to the front end of the front plate of the vehicle compartment; the supporting frame body 1 is connected with a plate lock 8, which is used to press the side wall of the supporting frame body 1 and the side wall of the safety frame body 21 against each other.

[0038] The support frame 1 is used to be welded to the front plate of the car, so as to enhance the connection strength of the entire protective device, resist impact and vibration, and further enhance the protection strength of the cab; the support frame 1, as a structure supporting and connecting the protective frame 2, can further enhance the connection strength with the protective frame 2, enhance the protective performance of the protective frame 2, and effectively realize the barrier effect of the protective frame 2 between the cab and the front plate of the car; the safety frame body 21 of the protective frame 2 can be telescopically connected relative to the support frame 1, and since the safety frame body 21 is connected to the first protective assembly 22, the safety frame body 21 can be telescopically connected relative to the support frame 1. The telescopic movement adjusts the height of the first protective assembly 22 relative to the front plate of the vehicle compartment to achieve protection for different vehicle models, which can improve the adaptability and versatility of the device; since the protective frame 2 and the supporting frame 1 can generate relative movement, and there is a certain gap between the protective frame 2 and the supporting frame 1, the support frame 1 and the protective frame 2 can be abutted against each other through the setting of the plate lock 8, so that the support frame 1 and the protective frame 2 are tightly connected, further improving the connection strength between the support frame 1 and the protective frame 2, and can further resist external impact and vibration, avoid vibration wear of the protective device, and further improve the service life.

[0039] The structure of the plate lock 8 can adopt the existing railing lock 8 buckle, and a hook is arranged on the support frame body 1. The plate lock 8 includes a first connecting plate, a second connecting plate and a wrench. The first connecting plate is hingedly connected to the second connecting plate. The first connecting plate is used to abut against the side of the lower side wall of the support frame body 1. The second connecting plate is connected to the support frame body 1 by bolts or welding. The wrench is hingedly connected to the first connecting plate, and the spring is connected between the wrench and the second connecting plate. The wrench is buckled on the hook, and the first connecting plate abuts against the side wall of the support frame body 1 to press the support frame body 1 against the safety frame body, thereby improving the connection strength between the support frame body 1 and the safety frame body, preventing movement gap, and avoiding mutual wear caused by external vibration, which leads to usage failure.

[0040] like Figure 1 and Figure 2 As shown, the protection frame 2 also includes a second protection component 23; the second protection component 23 is connected to the support frame 1; one end of the first protection component 22 along the vertical direction is connected to the safety frame body 21, and the other end of the first protection component 22 along the vertical direction is slidably connected to the second protection component 23.

[0041] By setting the second protection component 23, the lateral protection of the protective device can be further enhanced. The first protection component 22 mainly realizes the protection between the support frame body 1 and the safety frame main body 21, that is, in the vertical direction, thereby further increasing the protection area and increasing the protection strength; the second protection component 23 is connected to the support frame body 1, and serves as the protection of the bottom side of the protective device. One end of the first protection component 22 can be slidably connected to the second protection component 23, so that when the safety frame main body 21 moves vertically relative to the support frame main body, the first protection component 22 can move synchronously with the safety frame main body 21 under the action of the safety frame main body 21, thereby realizing the adjustment of the height of the protective device, being able to adapt to the height requirements of different vehicle models, and improving the applicability of the protective device.

[0042] The specific structure of the protection frame 2 is not limited by the present application and can adopt any of the following implementations:

[0043] Implementation method 1:

[0044] The safety frame body 21 is provided with a telescopic part, through which the safety frame body 21 can be extended or shortened along the width direction of the front panel of the vehicle; the first protection component 22 includes a plurality of columns, and one end of the column along the vertical direction is slidably connected to the telescopic part by cooperating with a guide rail and a slider.

[0045] By setting a telescopic part on the safety frame body 21, the safety frame body 21 can be telescopically moved along the width direction of the front panel of the vehicle compartment, so that the safety frame body 21 can be horizontally increased or shortened, and the safety frame body 21 can adapt to vehicle models of different widths, thereby further improving the applicability of the protective device and improving the user experience of the protective device; the first protective component 22 includes a plurality of columns, and the columns are vertical protective parts that can move along the telescopic part of the safety frame body 21. The purpose of achieving this is that when the safety frame body 21 is telescopically moved, the corresponding columns can also be adaptively adjusted according to the width of the safety frame body 21, so as to achieve uniform shielding of the cab in the width direction of the front panel of the vehicle compartment, thereby enhancing the protective effect.

[0046] Furthermore, the second protective assembly 23 includes a protective base frame 231, a plurality of protective cross bars 232 and a plurality of protective blocks 233; the support frame 1 is connected to both sides of the front plate of the carriage, and the protective base frame 231 is connected between the two support frames 1; the protective cross bars 232 are connected between the two support frames 1, and the protective cross bars 232 have a telescopic rod, through which the protective cross bars 232 are extended or shortened along the width direction of the front plate of the carriage; the protective block 233 is slidably connected to the protective base frame 231, and the protective block 233 has an installation groove for passing through the plurality of protective cross bars 232, and the top of the protective block 233 has a slide groove 3 for slidably connecting to the column.

[0047] By setting up a protective base frame 231, it is used to further strengthen the connection between the support frame bodies 1 on both sides of the front plate of the car body, and the protective cross bar 232 further realizes the lateral protective function of the protective device, and the protective cross bar 232 has a telescopic rod, which further realizes that the protective cross bar 232 can be extended or shortened in the length direction, so as to achieve corresponding extension or shortening following the safety frame body 21 to meet the needs of various vehicle models; the protective block 233 can be slidably connected to the protective base frame 231, and the protective block 233 has a sliding groove 3 slidably connected to the column, so that the column can interact up and down relative to the protective block 233, and the protective block 233 is used to support the column; in order to realize the linkage between the protective block 233 and the column and slide along the safety frame body 21, an installation groove for multiple protective cross bars 232 to pass through is provided inside the protective block 233, and the protective block 233 can move along the length direction of the protective cross bar 232 without interfering with the protective cross bar 232.

[0048] Further, the protective block 233 is connected to a protrusion at one end facing the protective base frame 231, and the protective base frame 231 is provided with a groove slidably connected to the protrusion; or, the protective block 233 is provided with a groove at one end facing the protective base frame 231, and the protective base frame 231 is connected to a protrusion slidably connected to the groove.

[0049] In order to further improve the smooth connection between the protective block 233 and the protective base frame 231, so that the protective block 233 can slide smoothly along the protective base frame 231, there can be two implementation modes, one of which is to provide a protrusion at the bottom of the protective block 233, and to provide a groove on the protective base frame 231, and the protrusion matches the groove, so that the protective block 233 slides along the protective base frame 231; another implementation mode is to provide a groove at the bottom of the protective block 233, and to provide a protrusion on the protective base frame 231 that matches the groove, so that the protective block 233 slides along the protective base frame 231 and the position of the protective block 233 can be limited, thereby further enhancing the connection between the protective block 233 and the protective base frame 231.

[0050] Implementation method 2:

[0051] The second protective component 23 includes a protective base frame 231, multiple protective cross bars 232 and multiple protective blocks 233; the support frame 1 is connected to both sides of the front plate of the vehicle compartment, and the protective base frame 231 is connected between the two support frames 1; the protective cross bars 232 are connected between the two support frames 1; multiple protective blocks 233 are respectively connected to the protective cross bars 232 and are distributed along the length direction of the protective cross bars 232, and a slide groove 3 for the first protective component 22 to slide up and down is opened in the protective block 233.

[0052] like Figure 3-4 As shown, the protective frame 231 is connected between the two support frames 1 as a connecting piece to strengthen the connection strength between the support frames 1; a plurality of protective cross bars 232 are arranged above the protective frame 231. The purpose of the protective cross bars 232 is to realize the lateral protection of the cab by the protective device, which can be combined with the vertical protection of the cab by the first protective component 22 to enhance the protection of the cab. In order to realize the connection between the protective cross bars 232 and the first protective component 22, a plurality of protective blocks 233 are connected to the protective cross bars 232. The interior of the protective blocks 233 is provided with a slide groove 3. The first protective component 22 can move up and down along the slide groove 3 to realize the adjustment of the height of the first protective component 22 relative to the protective block 233, thereby realizing the height adjustment of the protective device, which can adapt to the compartments of various types of vehicles and improve the applicability of the protective device.

[0053] Furthermore, a plurality of protection blocks 233 are connected to a side of the protection rail 232 that is away from the front panel of the carriage; or, a plurality of protection blocks 233 are connected through a plurality of protection rails 232 , and an end of the protection block 233 that is away from the protection base frame 231 can extend out of the plurality of protection rails 232 .

[0054] Optionally, multiple tracks can be arranged in the slide groove 3, and a sliding groove matching the track can be arranged on the first protective component 22, so that the sliding groove of the first protective component 22 can be moved along the track inside the slide groove 3, thereby further enhancing the connection strength between the protective block 233 and the first protective component 22, and laterally limiting the first protective component 22 so that the first protective component 22 moves along a specific vertical position, thereby enhancing the connection stability of the first protective component 22.

[0055] One end of the protection block 233 can extend out of the protection rail 232 . The protection rail 232 located near the safety frame body is provided with a notch 10 , which enables the protection block 233 to be connected to the notch 10 to avoid interference with the protection rail 232 .

[0056] The configuration of the telescopic component is not limited by the present application and any of the following implementations may be adopted:

[0057] As a preferred embodiment, Figure 5 As shown, the telescopic assembly includes a fixing plate 5 and a fixing member 6; the fixing plate 5 is connected to the inner side of the safety frame body 21, the support frame body 1 has a connecting groove 4 for the safety frame body 21 and the fixing plate 5 to slide up and down, the safety frame body 21 has a plurality of adjustment holes 9 passing through the fixing plate 5, and the support frame body 1 is provided with a plurality of mounting holes corresponding to the adjustment holes 9, and the height of the safety frame body 21 relative to the support frame body 1 can be adjusted by inserting the fixing member 6 into the corresponding adjustment holes 9 and the mounting holes.

[0058] The fixing plate 5 is used to enhance the structural strength of the safety frame body 21. The fixing plate 5 is connected to the inner side of the safety frame body 21, so that the connection strength between the mounting frame body and the inner wall of the support frame body 1 is enhanced; the safety frame body 21 is provided with a plurality of adjustment holes 9 penetrating the safety frame body 21, and the adjustment holes 9 can penetrate the fixing plate 5, and the support frame body 1 is provided with a plurality of mounting holes at positions corresponding to the adjustment holes 9. When the safety frame body 21 moves up and down in the connecting groove 4 of the support frame body, the fixing member 6 is inserted into the mounting hole and the adjusting hole 9, so that the position of the safety frame body in the connecting groove 4 is fixed. When it is necessary to adjust the height of the safety frame body relative to the support frame body 1, it is sufficient to install the fixing member 6 in the adjusting hole 9 and the mounting hole at different positions;

[0059] The fixing member 6 can be a pin, a pin shaft, a bolt, or other structural members, as long as it can play a role in fixing and connecting the safety frame body 21 and the support frame body 1 .

[0060] As another preferred embodiment, the telescopic assembly includes a hydraulic cylinder, and a connecting groove 4 for the safety frame body 21 to slide up and down is provided inside the support frame body 1, and the hydraulic cylinder is connected to the connecting groove 4; the piston rod of the hydraulic cylinder is connected to the safety frame body 21, and the height of the safety frame body 21 relative to the support frame body 1 is adjusted by the piston rod.

[0061] The hydraulic cylinder is fixedly connected to the connecting groove 4 in the support frame, so that the hydraulic cylinder is fixedly connected to the front plate of the car body; the piston rod of the hydraulic cylinder is connected to the safety frame body 21, which can drive the safety frame body 21 to move relative to the support frame body 1, and can adjust the height of the safety frame body 21 relative to the support frame body 1, so as to adapt to the height requirements of the cabs of different models and improve the applicability of the protective device.

[0062] As a preferred embodiment, at least one side of the protection frame 2 is connected to a pedal 7, and the pedal 7 has a reserved groove for stepping on.

[0063] At least one side of the protective frame 2 is connected to a pedal 7, that is, the pedal 7 can be connected to one side of the protective frame 2 or foot pedals 7 can be respectively provided on both sides. Since the protective frame 2 is connected to the front plate of the carriage, the staff can climb into the carriage through the protective frame 2. In order to facilitate the staff to climb, a pedal 7 is provided on at least one side of the protective frame 2. The staff can step on the reserved groove inside the pedal 7, hold the protective frame 2 or the railing of the carriage, and climb into the carriage to organize the goods.

[0064] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0065] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0066] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A height-adjustable cab protection device, characterized in that: It includes a supporting frame and a protective frame; The protection frame body includes a safety frame body and a first protection component; the safety frame body is connected to the upper part of the support frame body through a telescopic component; the first protection component is connected between the safety frame body and the support frame body, and is used to block the front plate of the carriage and the cab; The support frame is welded to the front end of the front plate of the carriage; the support frame is connected with a plate lock for pressing the side wall of the support frame and the side wall of the safety frame body against each other.

2. A height-adjustable cab protection device according to claim 1, characterized in that: The protection frame also includes a second protection component; the second protection component is connected to the support frame; one end of the first protection component along the vertical direction is connected to the safety frame body, and the other end of the first protection component along the vertical direction is slidably connected to the second protection component.

3. A height-adjustable cab protection device according to claim 2, characterized in that: The safety frame body is provided with a telescopic part, through which the safety frame body can be extended or shortened along the width direction of the front panel of the vehicle; the first protection component includes a plurality of columns, and one end of the column along the vertical direction is slidably connected to the telescopic part by cooperating with a guide rail and a slider.

4. A height-adjustable cab protection device according to claim 3, characterized in that: The second protection assembly includes a protection chassis, a plurality of protection rails and a plurality of protection blocks; The support frame is connected to both sides of the front plate of the carriage, and the protective base frame is connected between the two support frames; the protective cross bar is connected between the two support frames, and the protective cross bar has a telescopic rod, through which the protective cross bar can be extended or shortened along the width direction of the front plate of the carriage; the protective block is slidably connected to the protective base frame, and the protective block has an installation groove for passing through multiple protective cross bars, and the top of the protective block has a sliding groove for sliding connection to the column.

5. The height-adjustable cab protection device according to claim 4, characterized in that: The protective block is connected to a protrusion at one end facing the protective base, and the protective base is provided with a groove slidably connected to the protrusion; or, the protective block is provided with a groove at one end facing the protective base, and the protective base is connected to a protrusion slidably connected to the groove.

6. The height-adjustable cab protection device according to claim 2, characterized in that: The second protection assembly includes a protection chassis, a plurality of protection rails and a plurality of protection blocks; The support frame is connected to both sides of the front plate of the carriage, the protective base frame is connected between the two support frames; the protective cross bar is connected between the two support frames; a plurality of protective blocks are respectively connected to the protective cross bars and distributed along the length direction of the protective cross bars, and a sliding groove is provided in the protective block for the first protective component to slide up and down.

7. The height-adjustable cab protection device according to claim 6, characterized in that: A plurality of protection blocks are connected to a side of the protection railing away from the front plate of the carriage; or, a plurality of protection blocks are connected through a plurality of protection railings, and an end of the protection block away from the protection chassis can extend out of the plurality of protection railings.

8. The height-adjustable cab protection device according to claim 1, characterized in that: The telescopic assembly includes a fixing plate and a fixing piece; the fixing plate is connected to the inner side of the safety frame body, the support frame body has a connecting groove for the safety frame body and the fixing plate to slide up and down, the safety frame body has a plurality of adjustment holes penetrating the fixing plate, and the support frame body is provided with a plurality of mounting holes corresponding to the adjustment holes, and the height of the safety frame body relative to the support frame body can be adjusted by inserting the fixing piece into the corresponding adjustment holes and the mounting holes.

9. The height-adjustable cab protection device according to claim 1, characterized in that: The telescopic assembly includes a hydraulic cylinder. A connecting groove for the safety frame body to slide up and down is provided inside the support frame body, and the hydraulic cylinder is connected to the connecting groove; the piston rod of the hydraulic cylinder is connected to the safety frame body, and the height of the safety frame body relative to the support frame body is adjusted by the piston rod.

10. The height-adjustable cab protection device according to claim 1, characterized in that: At least one side of the protection frame is connected to a pedal, and a reserved groove for stepping on is provided in the pedal.

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