Crane suitable for multiple terrains

By designing a crane suitable for multiple terrains and adopting a crawler traveling mechanism and innovative support devices, the problem of insufficient driving and stability of existing cranes on complex terrains has been solved, and efficient driving and stable support on complex terrains have been achieved.

CN222374251UActive Publication Date: 2025-01-21HENAN MCC CRANE GRP CO LTD
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Patent Information

Application Number
CN202423168612.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-01-21
Estimated Expiration
2034-12-23

AI Technical Summary

Technical Problem

Existing cranes are difficult to drive or remain stable under complex terrain conditions, and the support system is insufficient to effectively adapt to rugged, inclined or uneven ground, affecting operating efficiency and safety.

Method used

A crane suitable for various terrains is designed, using a crawler traveling mechanism and innovative support devices, including fixed sleeves, clamping blocks, support rods, threaded sleeves, rotating sleeves, mating grooves, mating plates, adapter blocks and adapters. grooves, combined with hydraulic cylinders and hydraulic rods, to achieve precise adaptation and stable support to different terrains.

Benefits of technology

The crane can travel on uneven, soft or muddy ground, which improves maneuverability and application range. The support system can automatically adjust the height and pressure distribution of the support points according to the ground conditions to ensure the stability and safety of the crane in complex terrains. sex.

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Abstract

The utility model discloses a crane suitable for multiple terrains, which comprises a mounting frame, a lifting device is arranged on the mounting frame, supporting devices are arranged on two sides of the mounting frame, each supporting device comprises a fixing sleeve, a clamping block, a supporting rod, a threaded sleeve, a rotating sleeve, a matching groove, a matching plate, an adapting block and an adapting groove, the clamping block is connected to one side of the matching plate, and the supporting rod is connected to the other side of the matching plate. The supporting rod is arranged on the inner side of the threaded sleeve, the threaded sleeve is connected with the rotating sleeve through threads, the matching groove is formed in the inner side of the fixed sleeve, the adaptive block is connected to the other side of the clamping block, the adaptive groove is formed in the threaded sleeve, and the limiting mechanism is arranged on the outer side of the fixed sleeve and comprises a limiting sleeve, a conical spring, a limiting rod and a limiting groove. The limiting sleeve is movably arranged on the outer side of the fixing sleeve in a sleeved mode through threads, one end of the limiting rod is connected with the outer wall of the rotating sleeve through the conical spring, and the other end of the limiting rod is inserted into the limiting groove.
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Description

Technical Field

[0001] The utility model relates to the technical field of cranes suitable for multiple terrains, and more specifically, to a crane suitable for multiple terrains. Background Art

[0002] In the current field of engineering machinery, crane technology suitable for multi-terrain still has many limitations and shortcomings. These problems seriously affect the application effect and operation safety of cranes in complex environments, bringing significant challenges to the industry.

[0003] Firstly, cranes in the prior art generally have the problems of simple structure and single function. These devices are usually designed to operate on flat and solid ground. Their chassis system and traveling mechanism are difficult to adapt to complex and changeable terrain conditions. For example, in rugged mountainous areas or muddy wetland environments, these cranes are often unable to travel effectively or remain stable. This limitation seriously restricts the application scope of cranes, making it difficult for many important engineering projects, such as infrastructure construction in remote mountainous areas or environmental governance in wetland areas, to obtain effective lifting support. This not only increases the difficulty and cost of the project, but may also lead to extended construction period or reduced project quality.

[0004] Secondly, the support system design of existing cranes also has obvious deficiencies. Traditional cranes are usually equipped with four standard support legs. This design can provide sufficient stability and support force on flat ground. However, when faced with complex terrain, this simple support system seems to be powerless. For example, on inclined ground, it is difficult for the four support legs to contact the ground at the same time, which may cause the entire crane to tilt or become unstable. On uneven ground, the contact area of ​​the support legs may be insufficient, increasing the risk of rollover. These problems not only affect the operating efficiency of the crane, but also seriously threaten the safety of the operator and the integrity of the hoisted objects.

[0005] In addition, although some manufacturers have tried to solve the above problems by improving the support devices, these improvements are often superficial and fail to fundamentally solve the problem of multi-terrain adaptability. Although these improvements can provide a certain degree of adaptability in some cases, their structure is still relatively simple and the mechanism is not perfect. In actual use, these improved support devices may become unstable or loose due to changes in ground conditions. For example, on uneven ground, some support feet may sink due to excessive pressure, while other support feet may be suspended in the air, causing the entire crane to lose balance. For example, in a working environment with large vibrations, a simple adjustment mechanism may not be able to maintain a stable state continuously, and gradually loosen over time, eventually affecting the overall stability and safety of the crane. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the problems existing in the prior art, the utility model provides a crane suitable for multiple terrains to solve the technical problems mentioned in the background technology.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A crane suitable for multiple terrains includes a mounting frame, characterized in that: a lifting device is arranged on the mounting frame, and supporting devices are arranged on both sides of the mounting frame, the supporting device includes a fixed sleeve, a clamping block, a support rod, a threaded sleeve, a rotating sleeve, a matching groove, a matching plate, an adapter block and an adapter groove, the clamping block is connected to one side of the matching plate, the support rod is slidably arranged on the inner side of the threaded sleeve, the outer wall of the threaded sleeve is movably connected to the rotating sleeve through a thread, the matching groove is arranged on the inner side of the fixed sleeve, the matching plate is slidably arranged in the matching groove, the adapter block is connected to the other side of the clamping block, the matching groove is arranged on the threaded sleeve, and the matching groove is adapted to the adapter block, and a limiting mechanism is arranged on the outer side of the fixed sleeve, the limiting mechanism includes a limiting sleeve, a conical spring, a limiting rod and a limiting groove, the limiting sleeve is arranged on the outer side of the fixed sleeve through a threaded movable sleeve, one end of the limiting rod is connected to the outer wall of the rotating sleeve through a conical spring, and the other end of the limiting rod is inserted into the limiting groove, and a plurality of limiting grooves are arranged on the outer side of the fixed sleeve.

[0010] The utility model is further configured that movable rods are symmetrically provided on both sides of the mounting frame, one end of the movable rod is movably connected to the mounting frame, the other end of the movable rod is movably provided with a movable plate, and the fixing sleeve is connected below the movable plate.

[0011] The utility model is further configured that hydraulic cylinders are symmetrically provided on both sides of the mounting frame, one end of the hydraulic cylinder is movably connected to the mounting frame, the other end of the hydraulic cylinder is connected to a hydraulic rod, and the other end of the hydraulic rod is movably connected to a movable rod.

[0012] The utility model is further configured that a fixing plate is fixedly arranged in the fixing sleeve, a tension spring is connected to one side of the fixing plate, and the other end of the tension spring is connected to the top end of the support rod.

[0013] The utility model is further configured that an anti-slip strip is connected to the outer side of the limiting sleeve.

[0014] The utility model is further configured such that the lifting device includes a lifting component, a lifting frame, a crawler and a driving component, wherein the lifting component is mounted on a mounting frame, the lifting frame is mounted on one side of the component, the driving component is arranged on the inner side of the crawler, and the crawler is arranged under the mounting frame. This optimized structure enables the crane to travel on multiple terrains.

[0015] The utility model is further configured such that a counterweight is installed below the mounting frame, and two groups of crawlers are symmetrically arranged on both sides of the mounting frame. The arrangement of the counterweight changes the center of gravity of the equipment and reduces the probability of rollover.

[0016] The utility model is further configured that an anti-slip block is provided on the outer side of the crawler track, and the provision of the anti-slip block improves the anti-slip capability of the outer side of the crawler track.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a crane suitable for multiple terrains, which has the following beneficial effects:

[0019] 1. The design of the lifting device solves the problem in the prior art that cranes cannot travel on complex terrains. By adopting a crawler-type walking mechanism, the crane can adapt to various terrain conditions, including rugged, soft or muddy ground. The anti-slip block on the outside of the crawler further enhances the grip and stability of the equipment and effectively prevents slipping. The configuration of the lifting component and the hoisting frame retains the powerful lifting capacity of traditional cranes, while the design of the drive component ensures the flexible movement of the entire system. This combination not only improves the maneuverability of the crane in complex terrains, but also expands its scope of application, enabling it to perform tasks in places that are difficult for traditional cranes to reach.

[0020] 2. The innovative design of the support device overcomes the defect of the prior art that only four ordinary support legs cannot adapt to complex terrains. By introducing components such as fixed sleeves, clamping blocks, support rods, threaded sleeves and rotating sleeves, the device achieves precise adaptation to different terrains. The inclined structural design of the matching groove and matching plate, combined with the adjustability of the clamping block, enables the support system to automatically adjust the height and pressure distribution of each support point according to ground conditions. The design of the movable rod and movable plate further enhances the flexibility of the support system, while the configuration of the hydraulic cylinder and hydraulic rod provides precise height adjustment capabilities. This diversified support system can not only adapt to various complex terrains, but also ensure that the crane can obtain stable and reliable support under any circumstances, greatly improving the safety and operating efficiency of the equipment.

[0021] 3. The design of the limiting mechanism solves the problem in the prior art that the supporting device has low structural stability and is prone to loosening. By introducing components such as a limiting sleeve, a conical spring, a limiting rod and a limiting groove, the mechanism can effectively prevent the supporting device from accidentally moving or loosening during use. The threaded connection design of the limiting sleeve allows the operator to easily unlock or lock the supporting system when necessary, while the conical spring provides the necessary elastic support to ensure that the limiting rod can be stably inserted into the limiting groove. This design not only enhances the stability of the entire supporting system, but also improves its reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a crane suitable for multiple terrains in the utility model;

[0023] Figure 2 It is a structural schematic diagram of the lifting component part of the utility model;

[0024] Figure 3 It is a cross-sectional structural schematic diagram of the supporting device and the limiting mechanism in the utility model;

[0025] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0026] Figure 5 It is a schematic diagram of the dispersed structure of the threaded sleeve and the clamping block part in the utility model.

[0027] In the figure: 1. mounting frame; 2. fixing sleeve; 3. clamping block; 4. supporting rod; 5. threaded sleeve; 6. rotating sleeve; 7. matching groove; 8. matching plate; 9. adapting block; 10. adapting groove; 11. limiting sleeve; 12. conical spring; 13. limiting rod; 14. limiting groove; 15. movable rod; 16. movable plate; 17. hydraulic cylinder; 18. hydraulic rod; 19. fixing plate; 20. tension spring; 21. anti-skid strip; 22. lifting assembly; 23. lifting frame; 24. crawler track; 25. driving assembly; 26. counterweight block; 27. anti-sliding block. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0031] See also Figure 1-5A crane suitable for multiple terrains includes a mounting frame 1, which is characterized in that: a lifting device is arranged on the mounting frame 1, and supporting devices are arranged on both sides of the mounting frame 1, the supporting device includes a fixed sleeve 2, a clamping block 3, a support rod 4, a threaded sleeve 5, a rotating sleeve 6, a matching groove 7, a matching plate 8, an adapter block 9 and an adapter groove 10, the clamping block 3 is connected to one side of the matching plate 8, the support rod 4 is slidably arranged on the inner side of the threaded sleeve 5, the outer wall of the threaded sleeve 5 is movably connected to the rotating sleeve 6 through a thread, the matching groove 7 is opened on the inner side of the fixed sleeve 2, and the matching plate 8 is slidably arranged on the inner side of the threaded sleeve 5. The adapter block 9 is connected to the other side of the clamping block 3, the adapter groove 10 is provided on the threaded sleeve 5, and the adapter groove 10 is adapted to the adapter block 9. A limiting mechanism is provided on the outside of the fixed sleeve 2, and the limiting mechanism includes a limiting sleeve 11, a conical spring 12, a limiting rod 13 and a limiting groove 14. The limiting sleeve 11 is movably sleeved on the outside of the fixed sleeve 2 through a thread, one end of the limiting rod 13 is connected to the outer wall of the rotating sleeve 6 through the conical spring 12, and the other end of the limiting rod 13 is inserted into the limiting groove 14, and a plurality of limiting grooves 14 are provided on the outside of the fixed sleeve 2.

[0032] Movable rods 15 are symmetrically arranged on both sides of the mounting frame 1 . One end of the movable rod 15 is movably connected to the mounting frame 1 . A movable plate 16 is movably arranged on the other end of the movable rod 15 . The fixing sleeve 2 is connected below the movable plate 16 .

[0033] Hydraulic cylinders 17 are symmetrically arranged on both sides of the mounting frame 1 , one end of the hydraulic cylinder 17 is movably connected to the mounting frame 1 , and the other end of the hydraulic cylinder 17 is connected to a hydraulic rod 18 , and the other end of the hydraulic rod 18 is movably connected to the movable rod 15 .

[0034] A fixing plate 19 is fixedly disposed in the fixing sleeve 2 , a tension spring 20 is connected to one side of the fixing plate 19 , and the other end of the tension spring 20 is connected to the top end of the support rod 4 .

[0035] An anti-slip strip 21 is connected to the outer side of the limiting sleeve 11 .

[0036] In this embodiment, when the device needs to be supported and fixed, the limiting sleeve 11 is first rotated to make the limiting sleeve 11 move along the thread line, and then the limiting sleeve 11 will no longer limit the limiting rod 13, and then the rotating sleeve 6 is rotated, and the rotating sleeve 6 will drive the limiting rod 13 to move. Due to the rounded structure design at the end of the limiting rod 13 and the edge of the limiting groove 14, the side wall of the limiting groove 14 squeezes the end of the limiting rod 13, and then one end of the limiting rod 13 slides out of the limiting groove 14, and the other end of the limiting rod 13 drives the conical spring 12 to stretch. Since the threaded sleeve 5 and the rotating sleeve 6 are movably connected by threads, the thread The threaded sleeve 5 will slide in the fixed sleeve 2, and then the threaded sleeve 5 will drive the clamping block 3 to move through the adapter groove 10 and the adapter block 9, and then the clamping block 3 will mobilize the matching plate 8 to slide along the matching groove 7. Since the matching groove 7 and the matching plate 8 are both inclined structural designs, the matching plate 8 will drive the clamping block 3 to diffuse outward while sliding, and the clamping block 3 will drive the adapter block 9 to slide along the adapter groove 10, and then the clamping block 3 will no longer press the side wall of the support rod 4, and then synchronously drive the hydraulic cylinder 17, the hydraulic cylinder 17 drives the hydraulic rod 18 to move, and then the hydraulic rod 18 drives the movable rod 15 to move, so that the movable rod 15 brings The movable plate 16 is moved downward, and then the movable plate 16 drives the fixed sleeve 2 to move downward, and then the support rod 4 whose bottom end is in contact with the ground slides upward and drives the tension spring 20 to stretch. When the bottom ends of all the support rods 4 are in contact with the ground, each support rod 4 slides at a different distance, and the tension spring 20 is stretched to a different extent. Then the hydraulic cylinder 17 is closed, and then the rotating sleeve 6 is rotated in the opposite direction, and then the threaded sleeve 5 slides in the opposite direction to reset, and then the threaded sleeve 5 pushes the clamping block 3 to move, and then the clamping block 3 drives the matching plate 8 to slide and reset along the matching groove 7, and then the matching plate 8 drives the clamping block 3 to The inner sides gather together, and at the same time, the clamping block 3 will drive the adapter block 9 to slide along the adapter groove 10, and then the inner side of the clamping block 3 will re-clamp each support rod 4. At this time, the conical spring 12 drives the limiting rod 13 to engage in the original limiting groove 14, and then the limiting sleeve 11 is rotated in the opposite direction, so that the limiting sleeve 11 is reset along the thread line, and then the inner wall of the limiting sleeve 11 will limit the outer end of the limiting rod 13 to prevent the limiting rod 13 from moving, and then the limiting rod 13 will cooperate with the limiting groove 14 to limit the rotating sleeve 6 to prevent the rotating sleeve 6 from accidentally rotating, thereby ensuring the structural stability of the support device and ensuring the stable use of the equipment.

[0037] See also Figure 1-2 As an implementation method of the lifting device: the lifting device includes a lifting component 22, a lifting frame 23, a crawler 24 and a driving component 25, the lifting component 22 is installed on the mounting frame 1, the lifting frame 23 is installed on one side of the component, the driving component 25 is arranged on the inner side of the crawler 24, and the crawler 24 is arranged below the mounting frame 1.

[0038] A counterweight block 26 is installed below the mounting frame 1 , and two sets of crawlers 24 are symmetrically arranged on both sides of the mounting frame 1 .

[0039] An anti-sliding block 27 is provided on the outer side of the crawler track 24 .

[0040] More specifically, when the equipment needs to be used, first turn on the drive assembly 25 so that the drive assembly 25 drives the crawler track 24 to run, and then the crawler track 24 drives the entire equipment to move. The setting of the crawler track 24 can adapt well to road surfaces of different terrains. The anti-slip block 27 arranged on the outside of the crawler track 24 effectively improves the anti-slip ability and grip of the outside of the crawler track 24 to prevent slipping during movement. After moving to the designated construction site, turn off the drive assembly 25, and then support and fix the entire equipment through the supporting device arranged on the outside of the mounting frame 1, and then turn on the lifting assembly 22, and then the lifting assembly 22 drives the lifting frame 23 to run, and then the lifting frame 23 lifts the object, and then lifts the object to the designated location.

[0041] In summary, when the overall device is in use or running: when the device needs to be supported and fixed, first rotate the limiting sleeve 11 so that the limiting sleeve 11 moves along the thread line, and then the limiting sleeve 11 will no longer limit the limiting rod 13, and then rotate the rotating sleeve 6, the rotating sleeve 6 will drive the limiting rod 13 to move, due to the rounded structure design at the end of the limiting rod 13 and the edge of the limiting groove 14, then the side wall of the limiting groove 14 squeezes the end of the limiting rod 13, and then one end of the limiting rod 13 slides out of the limiting groove 14, and the other end of the limiting rod 13 drives the conical spring 12 to stretch, because the threaded sleeve 5 and the rotating sleeve 6 are movable through the thread The threaded sleeve 5 will slide in the fixed sleeve 2, and then the threaded sleeve 5 will drive the clamping block 3 to move through the adapting groove 10 and the adapting block 9, and then the clamping block 3 will mobilize the matching plate 8 to slide along the matching groove 7. Since the matching groove 7 and the matching plate 8 are both inclined structural designs, the matching plate 8 will drive the clamping block 3 to diffuse outward while sliding, and the clamping block 3 will drive the adapting block 9 to slide along the adapting groove 10, and then the clamping block 3 will no longer press the side wall of the support rod 4, and then synchronously drive the hydraulic cylinder 17, the hydraulic cylinder 17 drives the hydraulic rod 18 to move, and then the hydraulic rod 18 drives the movable rod 15 to move, so that the movable rod 15 The rod 15 drives the movable plate 16 to move downward, and then the movable plate 16 drives the fixed sleeve 2 to move downward, and then the support rod 4 whose bottom end is in contact with the ground slides upward and drives the tension spring 20 to stretch. When the bottom ends of all the support rods 4 are in contact with the ground, each support rod 4 slides at different distances, and the tension spring 20 is stretched to different degrees, and then the hydraulic cylinder 17 is closed, and then the rotating sleeve 6 is rotated in the reverse direction, and then the threaded sleeve 5 slides in the reverse direction to reset, and then the threaded sleeve 5 pushes the clamping block 3 to move, and then the clamping block 3 drives the matching plate 8 to slide and reset along the matching groove 7, and then the matching plate 8 drives the clamping block 3 gathers inwardly, and at the same time, the clamping block 3 drives the adapter block 9 to slide along the adapter groove 10, and then the inner side of the clamping block 3 will clamp each support rod 4 again. At this time, the conical spring 12 drives the limiting rod 13 to engage in the original limiting groove 14, and then the limiting sleeve 11 is rotated in the opposite direction, so that the limiting sleeve 11 is reset along the thread line, and then the inner wall of the limiting sleeve 11 will limit the outer end of the limiting rod 13 to prevent the limiting rod 13 from moving, and then the limiting rod 13 will cooperate with the limiting groove 14 to limit the rotating sleeve 6 to prevent the rotating sleeve 6 from rotating accidentally, thereby ensuring the structural stability of the supporting device and the stable use of the equipment.

[0042] When the equipment needs to be used, first turn on the driving component 25 so that the driving component 25 drives the crawler track 24 to run, and then the crawler track 24 drives the entire equipment to move. The setting of the crawler track 24 can adapt well to road surfaces of different terrains. The anti-slip block 27 arranged on the outside of the crawler track 24 effectively improves the anti-slip ability and grip of the outside of the crawler track 24 to prevent slipping during movement. After moving to the designated construction site, turn off the driving component 25, and then support and fix the entire equipment through the supporting device arranged on the outside of the mounting frame 1, and then turn on the lifting component 22, and then the lifting component 22 drives the lifting frame 23 to run, and then the lifting frame 23 lifts the object, and then lifts the object to the designated location.

[0043] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A crane suitable for multiple terrains, comprising a mounting frame (1), characterized in that: A lifting device is arranged on the mounting frame (1), and supporting devices are arranged on both sides of the mounting frame (1), wherein the supporting devices include a fixed sleeve (2), a clamping block (3), a supporting rod (4), a threaded sleeve (5), a rotating sleeve (6), a matching groove (7), a matching plate (8), an adapting block (9) and an adapting groove (10), wherein the clamping block (3) is connected to one side of the matching plate (8), the supporting rod (4) is arranged on the inner side of the threaded sleeve (5), the threaded sleeve (5) is connected to the rotating sleeve (6) through a thread, the matching groove (7) is arranged on the inner side of the fixed sleeve (2), and the adapting block (9) is connected to the rotating sleeve (6) through a thread. On the other side of the clamping block (3), an adapting groove (10) is formed on the threaded sleeve (5), and a limiting mechanism is provided on the outside of the fixed sleeve (2), the limiting mechanism comprising a limiting sleeve (11), a conical spring (12), a limiting rod (13) and a limiting groove (14). The limiting sleeve (11) is provided on the outside of the fixed sleeve (2) via a threaded movable sleeve, one end of the limiting rod (13) is connected to the outer wall of the rotating sleeve (6) via the conical spring (12), and the other end of the limiting rod (13) is inserted into the limiting groove (14), and a plurality of limiting grooves (14) are provided on the outside of the fixed sleeve (2).

2. A multi-terrain crane according to claim 1, characterized in that: Movable rods (15) are symmetrically provided on both sides of the mounting frame (1), one end of the movable rod (15) is movably connected to the mounting frame (1), and the other end of the movable rod (15) is movably provided with a movable plate (16), and the fixing sleeve (2) is connected below the movable plate (16).

3. The multi-terrain crane according to claim 2, characterized in that: Hydraulic cylinders (17) are symmetrically provided on both sides of the mounting frame (1), one end of the hydraulic cylinder (17) is movably connected to the mounting frame (1), the other end of the hydraulic cylinder (17) is connected to a hydraulic rod (18), and the other end of the hydraulic rod (18) is movably connected to the movable rod (15).

4. The multi-terrain crane according to claim 3, characterized in that: A fixing plate (19) is fixedly provided inside the fixing sleeve (2), one side of the fixing plate (19) is connected to a tension spring (20), and the other end of the tension spring (20) is connected to the top end of the support rod (4).

5. The multi-terrain crane according to claim 1, characterized in that: An anti-slip strip (21) is connected to the outer side of the limiting sleeve (11).

6. A multi-terrain crane according to any one of claims 1 to 5, characterized in that: The lifting device comprises a lifting component (22), a lifting frame (23), a crawler (24) and a driving component (25); the lifting component (22) is mounted on a mounting frame (1); the lifting frame (23) is mounted on one side of the component; the driving component (25) is arranged on the inner side of the crawler (24); and the crawler (24) is arranged below the mounting frame (1).

7. The multi-terrain crane according to claim 6, characterized in that: A counterweight (26) is installed below the mounting frame (1), and two sets of crawlers (24) are symmetrically arranged on both sides of the mounting frame (1).

8. The multi-terrain crane according to claim 7, characterized in that: An anti-sliding block (27) is provided on the outer side of the crawler belt (24).