Foldable open type cab and engineering machinery

Abstract

The invention discloses a foldable open type cab and engineering machinery, and belongs to the technical field of engineering machinery. The foldable open type cab comprises an open type cab cabin, the front portion and the upper portions of the two sides of the open type cab cabin are open, the rear portion of the open type cab cabin is connected with a first-stage overturning frame, a top plate is arranged at the upper end of the first-stage overturning frame, and the front portion of the top plate is connected with a second-stage overturning frame. According to the cab and the engineering machinery, operation switching between indoor and outdoor scenes can be met, and the cab and the engineering machinery are more convenient, safer and more stable. Only the rear stand column, namely the column B, is adopted, the front stand column, namely the column A, is omitted, lightweight design is achieved, and use is more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to an open cab for a loader or similar engineering machinery. Background Art

[0002] In existing engineering practices, site-operating construction machinery such as loaders and forklifts often encounter usage scenarios where they need to enter low and narrow areas such as workshops, warehouses, cattle sheds, pig pens and other non-open work areas. Currently, most small and micro loaders, forklifts, etc. are equipped with conventional cabs or conventional open cabs. This type of machinery has a high overall height and cannot enter the above work scenarios. To solve such problems, some customers require the OEM not to equip the cab, but only to equip the seat and the most basic functional modules required to operate the loader. However, this solution has a major flaw, that is, this type of setting is only suitable for indoor scenes, and construction machinery placed in outdoor scenes will have problems such as falling objects, glaring sun on sunny days, and inability to block rain on rainy days, which poses a major safety hazard.

[0003] In the prior art, Chinese patent CN219214994U discloses a foldable cab for an engineering vehicle, wherein a movable connecting assembly is provided between the roof and the cab base, and the roof and the cab base are foldably connected through the movable connecting assembly, and the height of the cab is adjusted by locking or unlocking the locking assembly, thereby solving the problem of height restrictions on engineering vehicles. However, it is mainly used for traction in tunnels, and the low-roof state is its common working state. The so-called folding is actually to press the roof horizontally downward, which is only applicable to initially larger cabs and cannot achieve switching into low and narrow spaces.

[0004] Chinese patent CN206721971U discloses a foldable cab for a loader, which is mainly suitable for protective cabs of field operation engineering machinery such as loaders and forklifts. A two-way adjustable diagonal support is provided. In an environment that does not require closed insulation, this foldable cab is used. When working in a narrow space, the cab does not need to be disassembled. While maintaining ventilation and good vision, it plays a certain protective role for the driver. However, this technical solution also has inconveniences and cumbersome operations. The two-way adjustable diagonal support is inconvenient to adjust, and the folding shed of this solution has a front column, namely the A-pillar. The A-pillar needs to be locked forward when folding, and the driver cannot reach it in the car and must get off the car to operate. Summary of the invention

[0005] In view of at least one of the above technical problems, the present invention provides a foldable open cab and an engineering machine, which can meet the needs of switching between indoor and outdoor operations. When operating outdoors, the cab is equivalent to a conventional open cab. When working indoors, the cab height can be lowered by first-level and second-level flipping and folding. On the other hand, the cab state switching in different scenarios is more convenient, safe and stable. The specific technical solutions are as follows: A foldable open cab comprises an open cab cabin, the front and upper parts of both sides of the open cab cabin are open, the rear of the open cab cabin is connected to a primary flip frame, the upper end of the primary flip frame is provided with a top plate, and the front of the top plate is connected to a secondary flip frame.

[0006] Rear lower pillars are provided on both sides of the rear end of the open cab cockpit, and rear upper pillars are provided on both sides of the rear end of the first-level flip frame. Each rear upper pillar and each rear lower pillar are hinged by a first-level flip pin shaft and form a rear pillar under normal conditions. The rear pillar is usually called a B-pillar, and a retractable power-assisting connecting piece is connected between each rear upper pillar and each rear lower pillar.

[0007] An outer ear plate and an inner ear plate are fixed on both sides of each rear lower column respectively, and a locking hole I, a locking hole II and a hinge hole for installing the first-level flip pin are provided on the outer ear plate and the inner ear plate, the locking hole I is located above the hinge hole, the locking hole II is located behind the hinge hole, the center distance between the locking hole I and the hinge hole is equal to the center distance between the hinge hole and the locking hole II, the rear upper column is provided with a flip pin hole corresponding to the hinge hole, and a positioning hole corresponding to the locking hole I or the locking hole II, and a pluggable positioning pin is installed in the positioning hole.

[0008] A limiting bracket I is provided at the front lower part of the rear upper pillar, and a limiting bracket II is fixed at the rear lower part of the rear upper pillar. One end of the limiting bracket I is fixed to the rear upper pillar, and the other end of the limiting bracket I extends downward and abuts against the upper part of the rear lower pillar in a normal state. The limiting bracket II has a downward supporting surface that abuts against the rear side of the rear lower pillar after being folded.

[0009] One end of the secondary flip frame is hinged to the top plate through a secondary flip pin, and the other end of the secondary flip frame is suspended in the air. A locking device is connected between the primary flip frame and the secondary flip frame.

[0010] In some embodiments of the present disclosure, one end of the first-level flip pin is fixed to the outer ear plate by a locking gasket and a flip pin locking bolt; the positioning pin adopts a handle pin, the handle end of the handle pin is located on one side of the outer ear plate, and the other end of the handle pin is provided with a round hole and a handle pin locking spring pin is fixed thereto; a self-lubricating copper sleeve is provided in the flip pin hole and the positioning hole of the rear upper column.

[0011] In some embodiments of the present disclosure, the handle end of the handle pin is connected to a handle pin anti-lost pull wire, and the other end of the handle pin anti-lost pull wire is connected to the flip pin shaft locking bolt.

[0012] In some embodiments of the present disclosure, diagonal braces are provided between the top plate of the primary flip frame and the rear upper columns on both sides to form a triangular three-dimensional frame.

[0013] In some embodiments of the present disclosure, the retractable power-assisting connecting member is a first-stage flip-assisting gas spring, a mounting seat I is fixed on the inner side of the rear lower pillar, a mounting seat II is fixed on the inner side of the rear upper pillar, and the first-stage flip-assisting gas spring is installed between mounting seat I and mounting seat II.

[0014] In some embodiments of the present disclosure, the secondary flip frame body adopts a hollow structure, and a skylight glass is installed above the hollow structure; a mounting seat III is installed on one side of the secondary flip frame and the primary flip frame on the same side, and a secondary flip assisting gas spring is installed between the two mounting seats III.

[0015] In some embodiments of the present disclosure, there are two secondary flip pins, which are installed in the hinge supports on both sides between the top plate and the secondary flip frame through copper gaskets and elastic retaining rings; brackets are provided at the rear of the hinge supports on both sides of the top plate, and buffer shock absorbers III are provided on the upper part of the brackets; a buffer baffle is provided at the front end of the top plate, and mounting plates III are provided on both sides of the rear of the secondary flip frame, and buffer shock absorbers IV are installed between the mounting plates III and the buffer baffles.

[0016] In some embodiments of the present disclosure, the locking device includes: a pair of pull-type buckles I and a pair of pull-type buckles II, the pull-type buckle I is vertically installed on the rear upper pillars on both sides through the mounting plate I, and the front two sides of the secondary flip frame are provided with a buckle retainer I which is adapted to the pull-type buckle I after flipping, the pull-type buckle II is horizontally installed on the lower part of the top plate through the mounting plate II, and the lower part of the secondary flip frame is installed with a buckle retainer II which is adapted to the pull-type buckle II.

[0017] In some embodiments of the present disclosure, the limiting bracket I is in an "L" shape or an arc shape, and the limiting bracket II is in a triangular shape.

[0018] In some embodiments of the present disclosure, a buffer shock absorber I is installed on a side of the downwardly extending end of the limit bracket I facing the rear lower pillar, and a buffer shock absorber II is installed on a supporting surface of the limit bracket II against the rear side of the rear lower pillar.

[0019] In some embodiments of the present disclosure, secondary flipping and pulling handles are provided on both sides of the secondary flipping frame, and primary flipping and pulling handles are provided on both sides of the primary flipping frame.

[0020] In some embodiments of the present disclosure, an anti-collision frame is provided at the front of the open cab cabin, an openable guardrail assembly is provided on one side of the open cab cabin, a fixed guardrail assembly is provided on the other side of the open cab cabin, and handles and rearview mirror mounting frames are symmetrically provided on both sides of the anti-collision frame.

[0021] In some embodiments of the present disclosure, the angle between the center line of the locking hole I and the hinge hole and the center line of the hinge hole and the locking hole II is the flip angle, and the flip angle is 110 degrees to 130 degrees.

[0022] In some embodiments of the present disclosure, a construction machine, such as a loader, a forklift, etc., is disclosed, which adopts the foldable open cab as described above.

[0023] Compared with the prior art, the above-mentioned foldable open cab and engineering machinery have the following beneficial effects: The cab and engineering machinery of the present invention can meet the requirements of operation switching in two different scenes, indoors and outdoors. When operating outdoors, the function is equivalent to that of a conventional open cab. When working indoors, the cab height can be lowered by first-level and second-level flipping and folding. On the other hand, the state switching of the cab in different scenes is more convenient, safe and stable. It is particularly suitable for narrow and low places.

[0024] 2. The present invention only adopts the rear pillar, i.e., the B-pillar, and eliminates the front pillar, i.e., the A-pillar, to achieve a lightweight design, better lighting and vision, and no need to get off the vehicle to fold the A-pillar, which is more convenient to use. The folding / unfolding operation can be performed in the cab without the driver getting off the vehicle.

[0025] The rear pillar, or B-pillar, is formed by hinged connection of the rear lower pillar and the rear upper pillar. The outer ear plate and inner ear plate are used to maintain the stability of both sides. The limit bracket I and limit bracket II are used to maintain the stability of the front when upright and the stability of the rear after folding. At the same time, the hinge hole, two locking holes and positioning pins are designed to quickly achieve posture switching and positioning. The limit bracket I and limit bracket II can also achieve fast and safe buffer positioning in conjunction with the buffer shock absorber.

[0026] 3. In the present invention, lifting handles are provided between and on the first-level flip frame to provide the operator with a good gripping point during the flipping operation; the rotating shafts between the cab cabin and the first-level flip frame, and between the first-level flip frame and the second-level flip frame are equipped with self-lubricating copper sleeves and copper gasket materials, which can greatly reduce friction and improve operational convenience; assisting gas springs are provided between the cab cabin and the first-level flip frame, and between the first-level flip frame and the second-level flip frame to improve operational convenience during the flipping operation.

[0027] 4. The handle pin between the cab and the first-level flip frame of the present invention is equipped with a handle pin anti-lost pull line, so that the operator can hang the handle pin outside the vehicle during operation to avoid occupying the space in the cabin, and it can also play a role in preventing loss. The upper part of the second-level flip frame is bonded with glass, and the lower metal plate is hollowed out, which provides a daylighting field of vision while reducing weight and is more conducive to flipping operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the foldable open cab of the present invention; Figure 2 It is a schematic diagram of the foldable open cab secondary flip frame of the present invention after folding; Figure 3 It is a schematic diagram of the foldable open cab of the present invention after the two-stage flip frames are folded; Figure 4 This is a structural exploded view of the foldable open cab of the present invention; Figure 5 It is a schematic diagram of the bottom structure of the primary flip frame and the secondary flip frame of the foldable open cab of the present invention; Figure 6 It is a cross-sectional view of the connection structure between the open cab cabin and the primary flip frame of the present invention; Figure 7 It is a schematic diagram of the openings of the inner and outer ear plates of the rear lower pillars of the open-type cab cabin of the present invention; Figure 8 It is a schematic diagram of the whole engineering machinery of the present invention adopting the foldable open cab of the present invention.

[0029] In the figure, 1. open cab cockpit; 101. anti-collision frame; 10101. boarding handle; 10102. rearview mirror mounting frame; 102. openable guardrail assembly; 103. fixed guardrail assembly; 104. outer ear plate; 105. inner ear plate; 106. mounting seat I.

[0030] First-level flip frame; 21. Top plate; 201. Mounting seat III; 202. First-level flip pull handle; 203. Mounting seat II; 204. Limit bracket I; 205. Limit bracket II; 206. Mounting plate I; 207. Mounting plate II; 208. Bracket; 209. Positioning hole; 210. Diagonal brace; 211. Flip pin hole; 212. Buffer baffle.

[0031] Secondary flip frame; 301, secondary flip pull handle; 302, buckle holder I; 303, buckle holder II; 304, mounting plate III.

[0032] 4. Sunroof glass; 5. First-stage flip assist gas spring; 6. Second-stage flip assist gas spring; 7. Pull-type buckle; 71. Pull-type buckle I; 72. Pull-type buckle II; 8. Buffer shock absorber; 81. Buffer shock absorber I; 82. Buffer shock absorber II; 83. Buffer shock absorber III; 84. Buffer shock absorber IV; 9. Handle pin; 10. First-stage flip pin shaft; 11. Flip pin shaft locking bolt; 12. Handle pin locking spring pin; 13. Second-stage flip pin shaft; 14. Self-lubricating copper sleeve; 15. Copper gasket; 16. Handle pin anti-lost pull line; 17. Elastic retaining ring; Pillar, 181, rear lower pillar, 182, rear upper pillar, 19. Engine hood.

[0033] A. Locking hole I; B. Hinge hole; C. Locking hole II; D. Flip angle. DETAILED DESCRIPTION

[0034] In order to better understand the purpose, structure and function of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below. It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present application. The terms used herein in this application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The terms "including" and "provided with" in this application and any variations thereof are open-ended and are intended to cover non-exclusive inclusions.

[0035] The serial numbers assigned to the components herein are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" mentioned in this disclosure, unless otherwise specified, includes both direct and indirect "connections". In the description of this application, it should be understood that the directions or positional relationships indicated by the directional terms "front" and "rear" are based on the attached Figure 1 The orientation or position relationship shown, "vertical", is an orientation or position relationship based on the usage status and is only for the convenience of description. It does not indicate or imply that the device or unit referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0036] As shown in the attached figure Figures 1 to 8 As shown, this embodiment provides a foldable open cab and an engineering machine.

[0037] like Figure 1-Figure 5 A foldable open cab is shown, comprising: an open cab cockpit 1, the front and upper parts of both sides of the open cab cockpit 1 are open, the rear part of the open cab cockpit 1 is connected to a primary flip frame 2, the upper end of the primary flip frame 2 is provided with a top plate 21, and the front part of the top plate 21 is connected to a secondary flip frame 3.

[0038] The rear end of the open cab cabin 1 is provided with rear lower columns 181 on both sides, and the rear end of the primary flip frame 2 is provided with rear upper columns 182 on both sides. Each rear upper column 182 is hinged with each rear lower column 181 through a primary flip pin 10 and forms a rear column 18 under normal conditions. The rear column is usually called a B column. A retractable power-assisting connector is connected between each rear upper column 182 and each rear lower column 181. The retractable power-assisting connector can be a gas spring, an electric push rod for electric power assistance, or a hydraulic cylinder for liquid power assistance.

[0039] The outer ear plate 104 and the inner ear plate 105 are fixed to the two sides of each rear lower column 181, respectively. The outer ear plate 104 and the inner ear plate 105 are provided with a locking hole IA, a locking hole IIC and a hinge hole B for installing the first-level flip pin shaft 10. The locking hole IA is located above the hinge hole B, and the locking hole IIC is located behind the hinge hole B. The center distance between the locking hole IA and the hinge hole B is equal to the center distance between the hinge hole B and the locking hole IIC. The rear upper column 182 is provided with a flip pin hole 211 corresponding to the hinge hole B and a positioning hole 209 corresponding to the locking hole IA or the locking hole IIC. A pluggable positioning pin is installed in the positioning hole 209. Reference Figure 1 , Figure 7 The outer ear plate and the inner ear plate are each provided with three circular holes, namely, the locking hole IA, the hinge hole B, and the locking hole ⅡC. The hinge hole B is used to pass through the primary flip pin, and the locking hole IA and the locking hole ⅡC are used to pass through the handle pin. When the cab is in the normal state, that is, not folded, the handle pin passes through the locking hole IA and the positioning hole 209 for locking. When the cab is in the folded state, the handle pin passes through the locking hole ⅡC and the positioning hole 209 for locking.

[0040] The angle between the center line of the locking hole IA and the hinge hole B and the center line of the hinge hole B and the locking hole IIC is the flip angle D. When the primary flip frame 2 folds backward without colliding with the hood 19, the larger the flip angle D, the better the passability. Figure 7 The flip angle D is preferably 110 degrees to 130 degrees. This angle allows the open cab to be lowered further after folding, thereby improving the passability of the entire machine. At the same time, it does not interfere with other parts of the construction machinery. When the position of the BC line does not change, the rear upper column 182 where the AB line is located can be slightly tilted forward to provide better support stability.

[0041] A limiting bracket I204 is provided at the lower front side of the rear upper column 182, and a limiting bracket II205 is fixed at the lower rear side of the rear upper column 182. One end of the limiting bracket I204 is fixed to the rear upper column 182, and the other end of the limiting bracket I204 extends downward and abuts against the upper part of the rear lower column 181 under normal conditions. The limiting bracket II205 has a downward supporting surface that abuts against the rear side of the rear lower column 181 after folding.

[0042] refer to Figure 1-Figure 3 The primary flip frame 2 is connected to the open cab cabin 1 through a primary flip pin and locked by a handle pin. The outer ear plate and the inner ear plate are used to maintain the stability of both sides, and the stability of the front when upright and the stability of the rear after folding are maintained by the limit bracket I and the limit bracket II. At the same time, the posture switching and positioning are quickly realized through the design of the hinge hole, two locking holes and the positioning pin. The limit bracket I and the limit bracket II cooperate with the buffer shock absorber to realize fast and safe buffer positioning. One end of the secondary flip frame 3 is hinged to the top plate 21 through the secondary flip pin 13, and the other end of the secondary flip frame 3 is suspended. A locking device is connected between the primary flip frame 2 and the secondary flip frame 3.

[0043] In some embodiments of the present disclosure, one end of the primary flip pin 10 is fixed to the outer ear plate 104 through a locking washer and a flip pin locking bolt 11; the positioning pin is a handle pin 9, the handle end of the handle pin 9 is located on one side of the outer ear plate 104, and the other end of the pin of the handle pin 9 is provided with a round hole and a handle pin locking spring pin 12 is fixed; the flip pin hole 211 and the positioning hole 209 of the rear upper column 182 are provided with a self-lubricating copper sleeve 14. Equipped with a self-lubricating copper sleeve and copper gasket material, friction can be greatly reduced and operation convenience can be improved.

[0044] In some embodiments of the present disclosure, the handle end of the handle pin 9 is connected to a handle pin anti-lost pull line 16, and the other end of the handle pin anti-lost pull line 16 is connected to the flip pin shaft locking bolt 11. The handle pin anti-lost pull line is installed so that the operator can hang the handle pin outside the vehicle during operation to avoid occupying space in the cabin, and it can also play a role in preventing loss.

[0045] In some embodiments of the present disclosure, diagonal braces 210 are provided between the top plate 21 of the primary flip frame 2 and the rear upper columns 182 on both sides, forming a triangular three-dimensional frame to further improve the structural stability. The diagonal braces 210 can also be rods or plates, and can also be straight or curved. At the same time, the diagonal braces 210 themselves can also be used as handles or mounting brackets for other components, and handles can also be extended to the diagonal braces 210 for mounting.

[0046] refer to Figure 4-Figure 6In some embodiments of the present disclosure, the retractable power-assisting connecting member is a first-stage flip-assisting gas spring 5, a mounting seat Ⅰ106 is fixed on the inner side of the rear lower column 181, a mounting seat Ⅱ203 is fixed on the inner side of the rear upper column 182, and the first-stage flip-assisting gas spring 5 is installed between the mounting seat Ⅰ106 and the mounting seat Ⅱ203.

[0047] refer to Figure 4-Figure 6 In some embodiments of the present disclosure, the main body of the secondary flip frame 3 adopts a hollow structure, and a skylight glass 4 is installed above the hollow structure; a mounting seat III201 is installed on one side of the secondary flip frame 3 and the primary flip frame 2 on the same side, and a secondary flip assisting gas spring 6 is installed between the two mounting seats III201.

[0048] refer to Figure 4-Figure 6 In some embodiments of the present disclosure, there are two secondary flip pins 13, and the secondary flip pins 13 are installed in the hinge supports on both sides between the top plate 21 and the secondary flip frame 3 through copper gaskets 15 and elastic retaining rings 17; the rear parts of the hinge supports on both sides of the top plate 21 are provided with brackets 208, and the upper parts of the brackets 208 are provided with buffer shock absorbers III83; the front end of the top plate 21 is provided with a buffer baffle 212, and the two sides of the rear of the secondary flip frame 3 are provided with mounting plates III304, and buffer shock absorbers IV84 are installed between the mounting plates III304 and the buffer baffle 212.

[0049] refer to Figure 4-Figure 6 In some embodiments of the present disclosure, the locking device includes: a pair of pull-type buckles I71 and a pair of pull-type buckles II72, the pull-type buckles I71 are vertically installed on the rear upper columns 182 on both sides through the mounting plate I206, and the front two sides of the secondary flip frame 3 are provided with buckle retainers I302 that are adapted to the pull-type buckles I71 after flipping, the pull-type buckle II72 is horizontally installed on the lower part of the top plate 21 through the mounting plate II207, and the lower part of the secondary flip frame 3 is installed with a buckle retainer II303 that is adapted to the pull-type buckle II72.

[0050] The front and rear positioning of each level of flip frame is carried out by means of a buffer shock absorber, and then locked by inserting and pulling the handle pin 9 and the pull-type buckle 7; the first-level flip pin 10 and the second-level flip pin 13 are respectively limited and locked by means of two locking methods that are not easy to remove, namely the flip pin locking bolt 11 and the elastic retaining ring 17; on the contrary, the handle pin 9, which is frequently disassembled, is limited and locked by means of the handle pin locking spring pin 12.

[0051] refer to Figure 1-Figure 6 In some embodiments of the present disclosure, the limiting bracket I 204 is in an "L" shape or an arc shape, and the limiting bracket II 205 is in a triangular shape.

[0052] In some embodiments of the present disclosure, a buffer shock absorber I81 is installed on a side of the downwardly extending end of the limiting bracket I204 facing the rear lower pillar 181, and a buffer shock absorber II82 is installed on the supporting surface of the limiting bracket II205 against the rear side of the rear lower pillar 181.

[0053] refer to Figure 1-Figure 6 In some embodiments of the present disclosure, secondary flipping and pulling handles 301 are provided on both sides of the secondary flipping frame 3, and primary flipping and pulling handles 202 are provided on both sides of the primary flipping frame 2.

[0054] refer to Figure 1-Figure 6 In some embodiments of the present disclosure, an anti-collision frame 101 is provided at the front of the open cab cabin 1, an openable guardrail assembly 102 is provided on one side of the open cab cabin 1, and a fixed guardrail assembly 103 is provided on the other side of the open cab cabin 1. The two sides of the anti-collision frame 101 are symmetrically provided with a vehicle handle 10101 and a rearview mirror mounting frame 10102. The left and right sides of the anti-collision frame at the front of the cab cabin are symmetrically provided with vehicle handles to facilitate the operator to get on and off the cabin. The fixed guardrail assembly 103 can also be replaced by an openable guardrail assembly.

[0055] In some embodiments of the present disclosure, reference Figure 8 , discloses an embodiment of an engineering machinery, such as a loader, a forklift, etc., which adopts the foldable open cab as described above.

[0056] On the one hand, the cab and engineering machinery of the present invention can meet the needs of switching between indoor and outdoor operations. When operating outdoors, the function is equivalent to that of a conventional open cab. When working indoors, the cab height can be reduced by flipping and folding at the first and second levels. On the other hand, the state switching of the cab in different scenarios is more convenient, safe and stable. The present invention only uses the rear column, i.e., the B-column, and eliminates the front column, i.e., the A-column, to achieve a lightweight design, better lighting and vision, and folding without getting off the vehicle to fold the A-column, which is more convenient to use. The folding / unfolding operation can be performed in the cab shed without the driver getting off the vehicle, further improving convenience.

[0057] It can be understood that the above description is only for illustrating the specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the disclosure scope of the present application.

Claims

1. A foldable open cab, characterized in that: include: An open cab cockpit (1), the front and upper parts of both sides of the open cab cockpit (1) are open, the rear of the open cab cockpit (1) is connected to a primary flip frame (2), the upper end of the primary flip frame (2) is provided with a top plate (21), and the front of the top plate (21) is connected to a secondary flip frame (3); The open cab cockpit (1) is provided with rear lower columns (181) on both sides of the rear end, and the first-stage flip frame (2) is provided with rear upper columns (182) on both sides of the rear end, each rear upper column (182) is hinged to each rear lower column (181) via a first-stage flip pin (10) and forms a rear column (18) in a normal state, and each rear upper column (182) is connected to each rear lower column (181) with a retractable power-assisting connection piece; An outer ear plate (104) and an inner ear plate (105) are fixed to both sides of each rear lower column (181), respectively; a locking hole I (A), a locking hole II (C) and a hinge hole (B) for mounting the first-level flip pin shaft (10) are provided on the outer ear plate (104) and the inner ear plate (105); the locking hole I (A) is located above the hinge hole (B), the locking hole II (C) is located behind the hinge hole (B), the center distance between the locking hole I (A) and the hinge hole (B) is equal to the center distance between the hinge hole (B) and the locking hole II (C); the rear upper column (182) is provided with a flip pin hole (211) corresponding to the hinge hole (B) and a positioning hole (209) corresponding to the locking hole I (A) or the locking hole II (C), and a pluggable positioning pin is installed in the positioning hole (209); A limiting bracket I (204) is provided at the front lower part of the rear upper column (182), and a limiting bracket II (205) is fixed at the rear lower part of the rear upper column (182); one end of the limiting bracket I (204) is fixed to the rear upper column (182), and the other end of the limiting bracket I (204) extends downward and abuts against the upper part of the rear lower column (181) in a normal state; the limiting bracket II (205) has a downward supporting surface that abuts against the rear side of the rear lower column (181) after being folded; One end of the secondary flip frame (3) is hinged to the top plate (21) via a secondary flip pin (13), and the other end of the secondary flip frame (3) is suspended in the air. A locking device is connected between the primary flip frame (2) and the secondary flip frame (3).

2. The foldable open cab according to claim 1, characterized in that: One end of the primary flip pin (10) is fixed to the outer ear plate (104) via a locking washer and a flip pin locking bolt (11); the positioning pin is a handle pin (9), the handle end of the handle pin (9) is located on one side of the outer ear plate (104), and the other end of the pin of the handle pin (9) is provided with a round hole and a handle pin locking spring pin (12) is fixed thereto; and a self-lubricating copper sleeve (14) is provided in the flip pin hole (211) and the positioning hole (209) of the rear upper column (182).

3. The foldable open cab according to claim 2, characterized in that: The handle end of the handle pin (9) is connected to a handle pin anti-lost pull wire (16), and the other end of the handle pin anti-lost pull wire (16) is connected to the flip pin shaft locking bolt (11).

4. The foldable open cab according to claim 1, characterized in that: Diagonal braces (210) are provided between the top plate (21) of the primary turnover frame (2) and the rear upper upright columns (182) on both sides.

5. The foldable open cab according to claim 1 or 4, characterized in that: The retractable power-assisting connecting member is a first-stage flip-assisting gas spring (5); a mounting seat I (106) is fixed on the inner side of the rear lower column (181); a mounting seat II (203) is fixed on the inner side of the rear upper column (182); and the first-stage flip-assisting gas spring (5) is installed between the mounting seat I (106) and the mounting seat II (203).

6. The foldable open cab according to claim 1 or 4, characterized in that: The main body of the secondary flip frame (3) adopts a hollow structure, and a skylight glass (4) is installed above the hollow structure; a mounting seat III (201) is installed on one side of the secondary flip frame (3) and the primary flip frame (2) on the same side, and a secondary flip assisting gas spring (6) is installed between the two mounting seats III (201).

7. The foldable open cab according to claim 1, characterized in that: There are two secondary flip pins (13), which are installed in hinge supports on both sides between the top plate (21) and the secondary flip frame (3) through copper washers (15) and elastic retaining rings (17); a bracket (208) is provided at the rear of the hinge supports on both sides of the top plate (21), and a buffer shock absorber III (83) is provided on the upper part of the bracket (208); a buffer baffle (212) is provided at the front end of the top plate (21), and mounting plates III (304) are provided on both sides of the rear of the secondary flip frame (3), and a buffer shock absorber IV (84) is installed between the mounting plate III (304) and the buffer baffle (212); The locking device comprises: a pair of pull-type buckles I (71) and a pair of pull-type buckles II (72); the pull-type buckles I (71) are vertically mounted on the rear upper pillars (182) on both sides through mounting plates I (206); buckle retaining frames I (302) are provided on both sides of the front part of the secondary flip frame (3) and are adapted to the pull-type buckle I (71) after flipping; the pull-type buckle II (72) is horizontally mounted on the lower part of the top plate (21) through mounting plates II (207); and buckle retaining frames II (303) adapted to the pull-type buckle II (72) are installed on the lower part of the secondary flip frame (3).

8. The foldable open cab according to claim 1, characterized in that: The limiting bracket I (204) is in an "L" shape or an arc shape, and the limiting bracket II (205) is in a triangular shape; a buffer shock absorber I (81) is installed on a side of the downwardly extending end of the limiting bracket I (204) facing the rear lower pillar (181), and a buffer shock absorber II (82) is installed on a supporting surface of the limiting bracket II (205) against the rear side of the rear lower pillar (181).

9. The foldable open cab according to claim 1 or 4, characterized in that: Secondary flipping and pulling handles (301) are arranged on both sides of the secondary flipping frame (3), and primary flipping and pulling handles (202) are arranged on both sides of the primary flipping frame (2).

10. The foldable open cab according to claim 1, characterized in that: The front part of the open cab cockpit (1) is provided with an anti-collision frame (101), one side of the open cab cockpit (1) is provided with an openable guardrail assembly (102), the other side of the open cab cockpit (1) is provided with a fixed guardrail assembly (103), and both sides of the anti-collision frame (101) are symmetrically provided with vehicle handles (10101) and rearview mirror mounting frames (10102).

11. The foldable open cab according to claim 1, characterized in that: The angle between the center line of the locking hole I (A) and the hinge hole (B) and the center line of the hinge hole (B) and the locking hole II (C) is the flip angle (D), and the flip angle (D) is 110 degrees to 130 degrees.

12. An engineering machine using the foldable open cab as claimed in claims 1 to 10.

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