Supporting column leg structure of portable crane

Abstract

The utility model relates to the technical field of cranes, and provides a supporting column leg structure of a portable crane, which comprises a top frame, supporting columns, connecting columns, a supporting seat, an adjusting component and a supporting component, the supporting columns are respectively arranged on two sides of the bottom of the top frame, the connecting columns are fixed at the bottoms of the supporting columns, and the adjusting component is arranged on the supporting seat. Supporting bases are fixed to the bottoms of the connecting columns, a groove is formed in the top frame, threaded holes are formed in the supporting columns in a penetrating mode, empty grooves are formed in the connecting columns, the adjusting assembly is arranged between the top frame and the two supporting columns, and the supporting assembly is arranged between the two connecting columns and the supporting columns. The adjusting assembly comprises a motor, an output shaft, a rotating rod, a first belt pulley, a second belt pulley, a belt, a bearing seat and a screw rod; the supporting assembly comprises a hydraulic cylinder and a top plate. According to the utility model, the height adjustability, portability and stability are provided, and the requirements on convenient, efficient and reliable hoisting equipment in modern industrial requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a supporting column leg structure of a portable crane. Background Art

[0002] Portable cranes are widely used in material handling and small loading and unloading operations in industries such as construction, manufacturing and logistics due to their flexibility and portability. Such cranes usually need to have good stability and adjustability to adapt to different working environments and requirements. However, existing portable cranes have some shortcomings in the design of supporting structures.

[0003] The shortcomings of the supporting column leg structure of the existing portable crane mainly include:

[0004] Limited adjustment capability: The support column leg structure design of many portable cranes has no or only limited height adjustment capability, which limits the adaptability and flexibility of the crane in different working conditions.

[0005] Complex installation and disassembly process: The supporting column legs of existing portable cranes are usually complex in design, and the installation and disassembly process is cumbersome, which is not conducive to rapid deployment and carrying.

[0006] In view of the above problems, it is necessary to develop a new type of portable crane support column leg structure. This new structure should be able to provide better height adjustment capabilities and simplify the installation and disassembly process. To this end, the utility model proposes a portable crane support column leg structure to solve the above problems. Utility Model Content

[0007] In order to overcome the defects of the prior art, the purpose of the utility model is to provide a support column leg structure of a portable crane to solve the problems raised in the above background technology.

[0008] To achieve the above object, the technical solution of the utility model is implemented as follows: a support column leg structure of a portable crane, comprising a top frame, a support column, a connecting column, a support seat, an adjustment assembly and a support assembly, support columns are respectively arranged on both sides of the bottom of the top frame, a connecting column is fixed to the bottom of the support column, a support seat is fixed to the bottom of the connecting column, a groove is provided in the top frame, a threaded hole is provided through the support column, an empty slot is provided in the connecting column, the adjustment assembly is arranged between the top frame and the two support columns, and the support assembly is arranged between the two connecting columns and the support column;

[0009] The adjustment assembly includes a motor, an output shaft, a rotating rod, a first pulley, a second pulley, a belt, a bearing seat and a screw rod. The motor is fixedly installed in an inverted manner on one side of the groove. The output end of the motor is connected to the output shaft. The rotating rod is arranged at one end of the groove away from the output shaft. The output shaft is fixed with a first pulley, and the rotating rod is fixed with a second pulley. The output shaft and the bottom end of the rotating rod are respectively fixedly connected with a screw rod, and the bottom end of the screw rod is passed into the threaded hole of the support column.

[0010] The support assembly includes a hydraulic cylinder and a top plate. There are two hydraulic cylinders in total, and the two hydraulic cylinders are respectively fixedly installed in the empty grooves of the two connecting columns.

[0011] Preferably, the support seat is in a trapezoidal shape.

[0012] Preferably, the top end of the rotating rod is rotatably connected to the inner wall of the top of the groove via a bearing seat.

[0013] Preferably, the first pulley and the second pulley are connected via a tensioned belt drive.

[0014] Preferably, the screw rod is threadedly connected to the threaded hole.

[0015] Preferably, the output end of the hydraulic cylinder leads into a threaded hole.

[0016] Preferably, a top plate is fixed to the output end of the hydraulic cylinder.

[0017] The beneficial effects of the utility model are embodied in:

[0018] Height adjustability: Through the adjustment component, the motor can drive the screws on both sides to rotate synchronously, so as to realize the up and down movement of the top frame relative to the support column. This design enables the working height of the crane to be adjusted according to different usage scenarios and needs, providing great flexibility.

[0019] Easy to carry and store: When not in use, the top frame can be separated from the support column by the rotation of the screw. After the top frame and the support column are separated, the entire device becomes more portable, easy to transport and store, especially suitable for those working environments that require frequent movement or limited space.

[0020] Structural stability: Through the design of the support assembly, no matter what position the screw is adjusted to in the threaded hole, after the hydraulic cylinder is started, the top plate at its output end will press against the bottom end of the screw to provide a stable support for the screw. This structural design not only increases the stability of the crane, but also effectively avoids damage to the thread due to excessive pressure.

[0021] Overall, the supporting column and leg structure of this portable crane is cleverly designed, providing a high degree of adjustability, portability and stability, meeting the needs of modern industrial demands for convenient, efficient and reliable lifting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached picture:

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0025] Figure 3 It is a partial schematic diagram of the adjustment component of the utility model;

[0026] Description of reference numerals:

[0027] 1. Top frame; 2. Support column; 3. Connecting column; 4. Support seat; 5. Groove; 6. Threaded hole; 7. Empty slot; 8. Motor; 9. Output shaft; 10. Rotating rod; 11. First pulley; 12. Second pulley; 13. Belt; 14. Bearing seat; 15. Screw; 16. Hydraulic cylinder; 17. Top plate. DETAILED DESCRIPTION

[0028] The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction. Example

[0032] Please refer to the instruction manual Figure 1-3 The utility model provides a supporting column leg structure of a portable crane, and the main structure components are:

[0033] Top frame 1: As the main supporting part of the crane, a support column 2 is provided on each side of the bottom of the top frame 1. A groove 5 is designed inside the top frame 1 to accommodate the adjustment component.

[0034] Support column 2: A connecting column 3 is fixed at the bottom of each support column 2. A threaded hole 6 is formed inside the support column 2.

[0035] Connecting column 3: A supporting seat 4 is fixed at the bottom of the connecting column 3, and its shape is trapezoidal to enhance stability. An empty slot 7 is opened in the connecting column 3.

[0036] Support base 4: used to stably support the entire crane structure to ensure safety during operation.

[0037] Adjustment components:

[0038] Motor 8: The motor 8 is fixedly installed at one side of the groove 5, and an output shaft 9 is connected to the output end of the motor 8.

[0039] Transmission system: A first pulley 11 is fixed on the output shaft 9, and correspondingly, a second pulley 12 is fixed on the rotating rod 10. The two pulleys are connected by a tensioned belt 13.

[0040] Screw 15: The output shaft 9 and the bottom end of the rotating rod 10 are respectively fixedly connected with screws 15, and the bottom end of the screw 15 passes into the threaded hole 6 of the supporting column 2 and is threadedly connected thereto.

[0041] Support components:

[0042] Hydraulic cylinder 16 and top plate 17: A hydraulic cylinder 16 is fixedly installed in each hollow groove 7 of each connecting column 3. The output end of the hydraulic cylinder 16 is connected to the threaded hole 6, and a top plate 17 is fixed to the output end.

[0043] How to use and working principle:

[0044] The screw 15 driven by the motor 8 rotates synchronously, and the top frame 1 can move up and down relative to the support column 2 to adjust the height. When not in use, the top frame 1 can be separated from the support column 2 by rotating the screw 15, so that the top frame 1 and the support column 2 are separated, which is convenient for carrying and storage; no matter what height position the screw 15 is adjusted to, after starting the hydraulic cylinder 16, the top plate 17 driven by the hydraulic cylinder 16 is pressed against the bottom end of the screw 15, providing stable support for the screw 15 to avoid damage to the thread due to excessive pressure; before the lifting operation, first adjust the screw to set the height of the top frame 1, and then start the hydraulic cylinder 16 to ensure stable support. After completing the operation, turn off the hydraulic cylinder 16, lower the top frame 1 to the lowest position, and separate the top frame 1 from the support column 2 for easy carrying.

[0045] This portable crane design combines the characteristics of easy adjustment and stable support, and is suitable for temporary operations that require rapid assembly and disassembly.

[0046] Through this specific implementation, the supporting column leg structure of the portable crane is not only practical and flexible, but also easy to carry and suitable for a variety of different working environments and conditions.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A support column leg structure for a portable crane, characterized in that: The invention comprises a top frame (1), a support column (2), a connecting column (3), a support seat (4), an adjustment component and a support component, wherein the top frame (1) is provided with support columns (2) on both sides of the bottom, the connecting column (3) is fixed at the bottom of the support column (2), and the support seat (4) is fixed at the bottom of the connecting column (3); a groove (5) is provided in the top frame (1), a threaded hole (6) is provided through the support column (2), and an empty groove (7) is provided in the connecting column; the adjustment component is provided between the top frame (1) and the two support columns (2), and the support component is provided between the two connecting columns (3) and the support column (2); The adjustment assembly comprises a motor (8), an output shaft (9), a rotating rod (10), a first pulley (11), a second pulley (12), a belt (13), a bearing seat (14) and a screw rod (15); the motor (8) is inverted and fixedly mounted on one side of the groove (5); the output end of the motor (8) is connected to the output shaft (9); the rotating rod (10) is arranged at an end of the groove (5) away from the output shaft (9); the output shaft (9) is fixed with the first pulley (11); the rotating rod (10) is fixed with the second pulley (12); the output shaft (9) and the rotating rod (10) are respectively fixedly connected to the bottom ends of the screw rod (15); the bottom end of the screw rod (15) is passed into the threaded hole (6) of the support column (2); The support assembly comprises a hydraulic cylinder (16) and a top plate (17), there are two hydraulic cylinders (16) in total, and the two hydraulic cylinders (16) are respectively fixedly mounted in the empty slots (7) of the two connecting columns (3).

2. The supporting column leg structure of a portable crane according to claim 1, characterized in that: The support seat (4) is in the shape of a trapezoid.

3. The supporting column leg structure of a portable crane according to claim 1, characterized in that: The top end of the rotating rod (10) is rotatably connected to the inner wall of the top of the groove (5) via a bearing seat (14).

4. The supporting column leg structure of a portable crane according to claim 1, characterized in that: The first belt pulley (11) and the second belt pulley (12) are connected in transmission via a tensioned belt (13).

5. The supporting column leg structure of a portable crane according to claim 1, characterized in that: The screw rod (15) is threadedly connected to the threaded hole (6).

6. The supporting column leg structure of a portable crane according to claim 1, characterized in that: The output end of the hydraulic cylinder (16) leads into the threaded hole (6).

7. The supporting column leg structure of a portable crane according to claim 6, characterized in that: A top plate (17) is fixed to the output end of the hydraulic cylinder (16).

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