Cab lifting device

Abstract

The utility model discloses a cab lifting device. The cab lifting device comprises a rack, a lifting arm assembly and a driving mechanism. The lifting arm assembly comprises two sliding lifting arm mechanisms, and the two sliding lifting arm mechanisms are movably and sequentially arranged on the rack at intervals in the length direction of the rack and can lift the two opposite ends of the cab in a one-to-one correspondence mode; the driving mechanism is located between the two sliding suspension arm mechanisms and comprises a driving piece, a rotating rod and two connecting rods, the driving piece is arranged on the rack, the driving end of the driving piece is arranged in the height direction of the rack, and the driving end of the driving piece is sleeved with the rotating rod which is provided with two rotating arms extending in the opposite direction; the two connecting rods are arranged on different sides of the driving part in a one-to-one correspondence mode so as to be movably connected with the rotating arms and the sliding suspension arm mechanisms which are arranged on the same side, and the driving part is used for driving the rotating rods to rotate so as to drive the two connecting rods to push and pull the corresponding sliding suspension arm mechanisms to move on the rack; therefore, the cab lifting device can adapt to cabs with different width sizes.

Description

Technical Field

[0001] This application belongs to the field of engineering machinery assembly technology, specifically relating to a cab lifting device. Background Technology

[0002] With the continuous advancement of technology, the construction machinery industry has also experienced large-scale development, leading to a sharp increase in demand for various types of construction machinery. During the assembly process of construction machinery, a cab lifting device is required to transport the cab. The cab lifting device primarily operates at the cab's door frame, enabling more efficient cross-line transport of the cab. The cab lifting device effectively solves the shortcomings of traditional forklift transportation methods, such as potential bumps and damage to the cab during transport. Furthermore, it reduces the labor intensity of workers loading and unloading parts and improves production efficiency.

[0003] However, with the diversification of market demand, different models of construction machinery have different cab widths, and the existing cab lifting devices have booms that are difficult to adjust to accommodate cabs of different widths. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this application provides a cab lifting device, which aims to solve the technical problem that the boom of the existing cab lifting device is difficult to adjust to adapt to cabs of different widths.

[0005] To achieve the above objectives, this application provides a cab lifting device, which includes a frame, a boom assembly, and a drive mechanism. The boom assembly includes two sliding boom mechanisms, which are movably and sequentially spaced along the length of the frame and can respectively lift the opposite ends of the cab. The drive mechanism is located between the two sliding boom mechanisms and includes a drive member, a rotating rod, and two connecting rods. The drive member is mounted on the frame with its drive end arranged along the height of the frame. The rotating rod is fitted onto the drive end of the drive member and has two opposing rotating arms. The two connecting rods are respectively located on different sides of the drive member to movably connect the rotating arm and the sliding boom mechanism on the same side. The drive member drives the rotating rod to rotate, thereby causing the two connecting rods to push and pull the corresponding sliding boom mechanism to move on the frame.

[0006] In this embodiment, the sliding boom mechanism includes a sliding frame and a lifting boom module. The sliding frame is movably connected to the corresponding connecting rod and is movably mounted on the frame. The lifting boom module is movably mounted on the sliding frame and has a support section for lifting the circumferential edge of the cab upwards.

[0007] In this embodiment, the lifting boom module includes a fixed boom, a lifting boom, and a fixing pin. The fixed boom is connected to the sliding frame, and the lifting boom is height-adjustably fitted inside the fixed boom via the fixing pin. The lifting boom is connected to the support part.

[0008] In this embodiment, the mounting section includes a rigid mounting block and a flexible connecting block connected to each other. The rigid mounting block is connected to the lifting arm, and the flexible connecting block is used to support the circumferential edge of the cab upwards.

[0009] In this embodiment, the mounting portion has a slot for the lower extension plate of the circumferential edge of the cab to be inserted.

[0010] In this embodiment of the application, a sliding track extending along its length is provided on the frame, and a roller is provided on the sliding frame. The roller's axis of rotation extends along the width direction of the frame, and the roller can roll relative to the bottom wall of the sliding track.

[0011] In this embodiment of the application, a guide wheel is provided on the sliding frame, and the axis of rotation of the guide wheel extends along the height direction of the frame. The guide wheel can roll relative to the side wall of the sliding track.

[0012] In this embodiment of the application, a limiting block is provided on the sliding track, extending along the width direction of the frame and close to the sliding frame. The limiting block is used to stop the rollers or guide wheels.

[0013] In this embodiment of the application, the cab lifting device further includes a plurality of hooks connected to the frame and located between two boom assemblies. The plurality of hooks are spaced apart and are used to hook onto the lifting rings on the top of the cab.

[0014] In this embodiment of the application, the frame is provided with an adjustable lifting lug, and the hook is detachably connected to the lifting lug.

[0015] In this embodiment of the application, the cab lifting device further includes a lifting assembly, which includes a lifting ring and a chain. The two ends of the chain are respectively connected to the two sides of the frame and the chain passes through the lifting ring. The lifting ring is used to connect to the conveying equipment.

[0016] Through the above technical solution, the cab lifting device provided in this application embodiment has the following beneficial effects:

[0017] The drive unit drives the rotating rod to rotate, and the rotating arm on the rotating rod rotates, which drives the two connecting rods to move. The connecting rods push and pull the corresponding sliding boom mechanism to move along the length of the frame, so as to change the distance between the two sliding boom mechanisms and thus adapt to cabs of different widths.

[0018] When the cab width is small, the drive unit drives the rotating rod to rotate clockwise, causing the two connecting rods to push and pull the two sliding boom mechanisms closer together, thus reducing the distance between the two sliding boom mechanisms and allowing them to adapt to the narrow cab width. When the cab width is large, the drive unit drives the rotating rod to rotate counterclockwise, causing the two connecting rods to push and pull the two sliding boom mechanisms further apart, thus increasing the short distance between the two sliding boom mechanisms and allowing them to adapt to the wide cab width.

[0019] By setting a drive component to rotate the rotating rod, which in turn drives the connecting rod to push and pull the sliding boom mechanism, the distance between the two sliding boom mechanisms is adjusted. This allows the cab lifting device to adapt to cabs of different widths, improving its versatility. Compared to manual adjustment, this method improves adjustment accuracy and efficiency. Furthermore, by adjusting the two sliding boom mechanisms with a single drive component, the risk of the cab lifting device tilting due to imbalance is eliminated, thus enhancing safety.

[0020] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0022] Figure 1 This is a schematic diagram of the cab lifting device according to an embodiment of the present application from one perspective;

[0023] Figure 2 This is a partial structural schematic diagram of the driver's cab according to an embodiment of this application;

[0024] Figure 3 This is a partially enlarged schematic diagram of a cab lifting device according to an embodiment of this application;

[0025] Figure 4 This is a structural schematic diagram of the cab lifting device according to an embodiment of this application from another perspective.

[0026] Explanation of reference numerals in the attached figures

[0027] 10 racks 231 rigid mounting blocks

[0028] 11 Sliding rail 232 Flexible connecting block

[0029] 111 Limiting block 233 Slot

[0030] 12 lifting lugs 30 drive mechanism

[0031] 20 Sliding boom mechanism 31 Drive component

[0032] 21 Sliding frame 32 Rotating rod

[0033] 211 Roller 321 Rotating Arm

[0034] 212 Guide wheel 33 Connecting rod

[0035] 22 Lifting boom module 40 Hook

[0036] 221 Fixed boom 50 lifting assembly

[0037] 2211 First fixing hole 51 Lifting ring

[0038] 222 lifting arm, 52 chain

[0039] 223 Fixed pin 200 Cab

[0040] 2231 Limiting rod 201 Lower extension plate

[0041] 23 Mounting section 202 Lifting ring Detailed Implementation

[0042] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0043] The cab lifting device of this application is described below with reference to the accompanying drawings.

[0044] like Figures 1 to 4As shown, this application provides a cab lifting device, wherein the cab lifting device includes a frame 10, a boom assembly and a drive mechanism 30. The boom assembly includes two sliding boom mechanisms 20, which are movably and sequentially spaced along the length of the frame 10 and can respectively lift the opposite ends of the cab 200. The drive mechanism 30 is located between the two sliding boom mechanisms 20 and includes a drive member 31, a rotating rod 32 and two connecting rods 33. The drive member 31 is mounted on the frame 10 and its drive end is arranged along the height of the frame 10. The rotating rod 32 is fitted onto the drive end of the drive member 31 and has two opposing rotating arms 321. The two connecting rods 33 are respectively located on different sides of the drive member 31 to movably connect the rotating arms 321 and the sliding boom mechanisms 20 on the same side. The drive member 31 is used to drive the rotating rod 32 to rotate, thereby driving the two connecting rods 33 to push and pull the corresponding sliding boom mechanisms 20 to move on the frame 10.

[0045] Two sliding boom mechanisms 20 are spaced apart on the frame 10 along its length, and each sliding boom mechanism 20 correspondingly lifts the opposite ends of the cab 200. Furthermore, the sliding boom mechanisms 20 are movable along the length of the frame 10. A drive member 31 is mounted on the frame 10 and located between the two sliding boom mechanisms 20. The drive end of the drive member 31 extends vertically, and a rotating rod 32 is fitted onto the drive end of the drive member 31. The drive member 31 drives the rotating rod 32 to rotate. The rotating rod 32 has two opposing rotating arms 321, which are located on opposite sides of the drive end of the drive member 31. Two connecting rods 33 are correspondingly located on different sides of the drive member 31, such as... Figure 1 As shown, two connecting rods 33 are respectively located on the left and right sides of the driving member 31. One end of the connecting rod 33 is movably connected to the rotating arm 321 located on the same side, and the ends of the two connecting rods 33 that are movably connected to the rotating arm 321 are respectively located on the front and rear sides of the driving member 31; the other end of the connecting rod 33 is movably connected to the sliding boom mechanism 20 located on the same side.

[0046] The drive unit 31 drives the rotating rod 32 to rotate, and the rotating arm 321 on the rotating rod 32 rotates to drive the two connecting rods 33 to move. The connecting rods 33 push and pull the corresponding sliding boom mechanism 20 to move along the length direction of the frame 10, so as to change the distance between the two sliding boom mechanisms 20, thereby adapting to the cab 200 with different widths.

[0047] like Figure 1As shown, when the width of the cab 200 is small, the drive member 31 drives the rotating rod 32 to rotate clockwise, causing the two connecting rods 33 to push and pull the two sliding boom mechanisms 20 closer together, thus reducing the distance between the two sliding boom mechanisms 20 and allowing them to adapt to the narrow cab 200. When the width of the cab 200 is large, the drive member 31 drives the rotating rod 32 to rotate counterclockwise, causing the two connecting rods 33 to push and pull the two sliding boom mechanisms 20 further apart, thus increasing the short distance between the two sliding boom mechanisms 20 and allowing them to adapt to the wide cab 200.

[0048] By driving the rotating rod 32 to rotate via the drive component 31, the connecting rod 33 pushes and pulls the sliding boom mechanism 20, thereby adjusting the distance between the two sliding boom mechanisms 20. This allows the cab lifting device to adapt to cabs 200 of different widths, improving its versatility. Compared to manual adjustment, this method improves adjustment accuracy and efficiency. Furthermore, by adjusting the two sliding boom mechanisms 20 with a single drive component 31, the risk of the cab lifting device tilting due to imbalance is eliminated, enhancing safety.

[0049] For example, the drive component 31 can be a servo motor, which has advantages such as high output accuracy, smooth operation, and strong overload resistance. It is understood that the drive component 31 can also be other structures.

[0050] In this embodiment, the sliding boom mechanism 20 includes a sliding frame 21 and a lifting boom module 22. The sliding frame 21 is movably connected to the corresponding connecting rod 33 and is movably mounted on the frame 10. The lifting boom module 22 is movably mounted on the sliding frame 21 and has a support part 23. The support part 23 is used to support the circumferential edge of the cab 200 upward.

[0051] The connecting rod 33 is movably connected to the sliding frame 21 on the same side, and the sliding frame 21 can move relative to the frame 10 in the left and right directions. The sliding frame 21 is equipped with a lifting boom module 22, which can be raised and lowered to change the position of the support part 23 in the vertical direction, so as to be compatible with cabs 200 with different top depth dimensions and improve the compatibility of the cab lifting device.

[0052] The drive unit 31 drives the rotating rod 32 to rotate, thereby driving the connecting rod 33 to push and pull the corresponding sliding frame 21 to move. The sliding frame 21 drives the lifting boom module 22 to move, thereby moving the mounting part 23 and adjusting the distance between the two mounting parts 23 to adapt to cabs 200 with different widths.

[0053] Specifically, a rotating bearing can be installed between the connecting rod 33 and the sliding frame 21 to reduce the wear caused by the rotation of the connecting rod 33 relative to the sliding frame 21.

[0054] In the embodiments of this application, please refer to Figure 1 The lifting boom module 22 includes a fixed boom 221, a lifting boom 222 and a fixing pin 223. The fixed boom 221 is connected to the sliding frame 21. The lifting boom 222 is height-adjustably fitted inside the fixed boom 221 through the fixing pin 223. The lifting boom 222 is connected to the support part 23.

[0055] The fixed arm 221 is connected to the sliding frame 21 to connect the lifting boom module 22 to the sliding frame 21. The lifting arm 222 is height-adjustable and fitted inside the fixed arm 221, and is fixed by a fixing pin 223. Specifically, the fixed arm 221 has multiple first fixing holes 2211 spaced apart along the height direction, and the lifting arm 222 has second fixing holes. The fixing pin 223 passes through the first fixing holes 2211 and the second fixing holes in sequence to fix the lifting arm 222. There can also be multiple second fixing holes spaced apart along the height direction, making height adjustment of the lifting arm 222 more convenient.

[0056] By selecting different first fixing holes 2211 through which the fixing pin 223 passes, the length of the lifting arm 222 fitted inside the fixing arm 221 can be adjusted, thereby adjusting the height of the mounting part 23. The longer the length of the lifting arm 222 fitted inside the fixing arm 221, i.e., the longer the overlap between the lifting arm 222 and the fixing arm 221, the higher the height of the mounting part 23 and the smaller the distance between the mounting part 23 and the frame 10. Conversely, the shorter the length of the lifting arm 222 fitted inside the fixing arm 221, i.e., the shorter the overlap between the lifting arm 222 and the fixing arm 221, the lower the height of the mounting part 23 and the larger the distance between the mounting part 23 and the frame 10.

[0057] Please see Figure 3 A limiting rod 2231 is provided on the fixing pin 223. The limiting rod 2231 extends radially along the fixing pin 223. By setting the limiting rod 2231, the fixing pin 223 is limited, preventing the fixing pin 223 from disengaging from the lifting arm 222 and the fixing arm 221, making the use of the fixing pin 223 more convenient.

[0058] In the embodiments of this application, please refer to Figure 2 and Figure 3 The mounting section 23 includes a rigid mounting block 231 and a flexible connecting block 232 connected to each other. The rigid mounting block 231 is connected to the lifting arm 222, and the flexible connecting block 232 is used to support the circumferential edge of the cab 200 upwards.

[0059] The rigid mounting block 231 extends in the left-right direction and connects to the lifting arm 222. The rigid mounting block 231 enhances the structural strength of the mounting section 23. A flexible connecting block 232 contacts the circumferential edge of the cab 200, preventing the mounting section 23 from scraping or colliding with the cab 200 and damaging its surface paint. The flexible connecting block 232 can be made of soft materials such as polyurethane, rubber, or silicone.

[0060] In the embodiments of this application, please refer to Figure 2 and Figure 3 The mounting part 23 has a slot 233 for the lower extension plate 201 of the circumferential edge of the cab 200 to be inserted.

[0061] The slot 233 extends in the front-to-back direction, and the lower extension plate 201 of the circumferential edge of the cab 200 is inserted into the slot 233. By setting the slot 233 and the lower extension plate 201 to cooperate, the connection between the cab 200 and the lifting part 23 can be more stable and reliable, thereby improving the stability and safety of the cab lifting device.

[0062] In the embodiments of this application, please refer to Figure 3 The frame 10 is provided with a sliding track 11 extending along its length direction, and the sliding frame 21 is provided with a roller 211. The axis of rotation of the roller 211 extends along the width direction of the frame 10, and the roller 211 can roll relative to the bottom wall of the sliding track 11.

[0063] The sliding track 11 extends along the length of the frame 10, that is, it extends in the left and right direction. Rollers 211 are provided on the front and rear sides of the sliding frame 21. The axle of the rollers 211 extends in the front and rear direction. The rollers 211 can roll relative to the bottom wall of the sliding track 11. By setting the rollers 211 to cooperate with the sliding track 11, the sliding frame 21 can move more smoothly relative to the frame 10, thereby making it easier to adjust the distance between the two sliding boom mechanisms 20.

[0064] In the embodiments of this application, please refer to Figure 3 The sliding frame 21 is provided with guide wheels 212. The axis of rotation of the guide wheels 212 extends along the height direction of the frame 10, and the guide wheels 212 can roll relative to the side wall of the sliding track 11.

[0065] The guide wheels 212 are located on the front and rear sides of the sliding frame 21. The axis of rotation of the guide wheels 212 extends in the vertical direction. The guide wheels 212 can roll relative to the side wall of the sliding track 11. By setting the guide wheels 212 for guidance, the sliding frame 21 is prevented from running off course, making the movement of the sliding frame 21 in the left and right directions more stable.

[0066] In the embodiments of this application, please refer to Figure 3The sliding track 11 is provided with a limiting block 111 extending along the width direction of the frame 10 and close to the sliding frame 21. The limiting block 111 is used to stop the roller 211 or the guide wheel 212.

[0067] Limit blocks 111 are provided at both ends of the sliding track 11. The limit blocks 111 stop and limit the rollers 211 or guide wheels 212 to prevent the sliding frame 21 from falling off the sliding track 11, making the use of the cab lifting device more convenient and safer.

[0068] In the embodiments of this application, please refer to Figure 4 The cab lifting device also includes a plurality of hooks 40 connected to the frame 10 and located between the two boom assemblies. The plurality of hooks 40 are spaced apart and are used to hook the lifting rings 202 on the top of the cab 200.

[0069] The hooks 40 are installed and fixed by connecting to the frame 10, and multiple hooks 40 are located between the two boom assemblies and are spaced apart. For the cab 200, which has a very small width, lifting operations can be performed by hooking the hooks 40 onto the lifting rings 202 on the top of the cab 200. By setting the hooks 40 to cooperate with the lifting rings 202 on the top of the cab 200, the compatibility of the cab lifting device is improved.

[0070] In the embodiments of this application, please refer to Figure 4 The frame 10 is equipped with an adjustable lifting lug 12, and the hook 40 is detachably connected to the lifting lug 12.

[0071] The position of the lifting lug 12 in the front-to-back direction can be adjusted to accommodate the lifting rings 202 of different cabs 200, further improving the compatibility of the cab lifting device. The hook 40 is detachably connected to the lifting lug 12. When using the boom assembly for lifting operations, and when the hook 40 is not needed to lift the cab 200, the hook 40 can be removed from the lifting lug 12. The detachable connection between the hook 40 and the lifting lug 12 also facilitates the replacement of the hook 40 after wear, improving the flexibility of the hook 40 in use.

[0072] Specifically, the lifting lug 12 is detachably connected to the frame 10 via fasteners, which are bolts. Bolts have the advantages of being easy to obtain and convenient to install. Furthermore, the threaded connection can achieve self-locking, making the connection between the lifting lug 12 and the frame 10 tighter and more reliable.

[0073] In the embodiments of this application, please refer to Figure 4 The cab lifting device also includes a lifting assembly 50, which includes a lifting ring 51 and a chain 52. The two ends of the chain 52 are respectively connected to the two sides of the frame 10 and the chain 52 passes through the lifting ring 51. The lifting ring 51 is used to connect to the conveying equipment.

[0074] Both ends of the chain 52 are connected to the front and rear sides of the frame 10, respectively, and the chain 52 passes through the lifting ring 51, which is used to connect to the conveying equipment, which can be an overhead crane or a truss. After the cab 200 is hoisted onto the cab lifting device, the conveying equipment drives the lifting ring 51 to move, thereby moving the cab lifting device and the cab 200.

[0075] In the description of this application, it should be understood 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0076] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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 components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0078] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A cab hoist, characterized by, The cab lifting device comprises: a frame (10); a lifting arm assembly comprising two sliding lifting arm mechanisms (20) movably arranged on the frame (10) in sequence along the length direction of the frame (10) and capable of lifting the opposite ends of a cab (200) one by one in one-to-one correspondence; a driving mechanism (30) located between the two sliding lifting arm mechanisms (20) and comprising a driving member (31), a rotating rod (32) and two connecting rods (33), the driving member (31) being arranged on the frame (10) with a driving end arranged along the height direction of the frame (10), the rotating rod (32) being sleeved on the driving end of the driving member (31) and having two rotating arms (321) extending in opposite directions, and the two connecting rods (33) being arranged on different sides of the driving member (31) in one-to-one correspondence to movably connect the rotating arm (321) and the sliding lifting arm mechanism (20) arranged on the same side, the driving member (31) being used to drive the rotating rod (32) to rotate so as to drive the two connecting rods (33) to push and pull the corresponding sliding lifting arm mechanism (20) to move on the frame (10).

2. The cab lifting device of claim 1, wherein The sliding lifting arm mechanism (20) comprises a sliding frame (21) movably arranged on the frame (10) and movably connected with the corresponding connecting rod (33), and a lifting arm module (22) arranged on the sliding frame (21) in a lifting manner and having a supporting part (23) for supporting the circumferential edge of the cab (200) upward.

3. The cab hoist of claim 2, wherein, The lifting arm module (22) comprises a fixed arm (221), a lifting arm (222) and a fixed pin (223), the fixed arm (221) being connected with the sliding frame (21), the lifting arm (222) being sleeved on the fixed arm (221) in a height-adjustable manner through the fixed pin (223), and the lifting arm (222) being connected with the supporting part (23).

4. The cab hoist of claim 3, wherein, The supporting part (23) comprises a hard mounting block (231) and a soft connecting block (232) connected with each other, the hard mounting block (231) being connected with the lifting arm (222), and the soft connecting block (232) being used to support the circumferential edge of the cab (200) upward.

5. The cab hoist of claim 2, wherein, The supporting part (23) is formed with a clamping groove (233) for clamping the downward plate (201) of the circumferential edge of the cab (200).

6. The cab hoist of claim 2, wherein, The frame (10) is provided with a sliding track (11) extending along the length direction thereof, the sliding frame (21) is provided with a roller (211) having a rotation shaft extending along the width direction of the frame (10), and the roller (211) is capable of rolling relative to the bottom wall of the sliding track (11); and / or, The sliding frame (21) is provided with a guide wheel (212), the rotation axis of the guide wheel (212) extends along the height direction of the frame (10), and the guide wheel (212) can roll relative to the side wall of the sliding rail (11).

7. A cab lifting device according to claim 6, characterised in that The sliding rail (11) is provided with a limiting block (111) extending along the width direction of the frame (10) and close to the sliding frame (21), and the limiting block (111) is used for stopping the roller (211) or the guide wheel (212).

8. The cab lifting device according to any one of claims 1 to 7, characterized in that The cab lifting device further comprises a plurality of lifting hooks (40) connected with the frame (10) and located between the two lifting arm assemblies, the plurality of lifting hooks (40) are distributed at intervals, and the lifting hooks (40) are used for hooking lifting rings (202) on the top of the cab (200).

9. A cab lifting device according to claim 8, characterised in that The frame (10) is provided with a position-adjustable lifting lug (12), and the lifting hooks (40) are detachably connected with the lifting lug (12).

10. The cab lifting device according to any one of claims 1 to 7, characterized in that The cab lifting device further comprises a lifting assembly (50), the lifting assembly (50) comprises a lifting ring (51) and a chain (52), two ends of the chain (52) are connected with two sides of the frame (10) respectively, and the chain (52) passes through the lifting ring (51), and the lifting ring (51) is used for being connected with conveying equipment.

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