Hydraulic supporting leg mechanism of crane

Abstract

The utility model discloses a crane hydraulic supporting leg mechanism which comprises a fixing plate, a support is fixedly welded to the surface of the bottom of the fixing plate, a long-strip-shaped hinge hole is formed in the support, a hinge shaft is hinged to the interior of the long-strip-shaped hinge hole, one end of the hinge shaft is fixedly connected with a hydraulic cylinder, and the other end of the hinge shaft is fixedly connected with the hydraulic cylinder. The hydraulic cylinder is hinged to one side of the interior of the support, a threaded head is arranged on a rod head of the hydraulic cylinder, a threaded barrel is installed on the outer surface of the threaded head in a threaded mode, a supporting block is fixedly connected to one end of the threaded barrel and located at the bottom of the hydraulic cylinder, and combined blocks are fixedly connected to the surfaces of the two sides of the supporting block. Combined through holes are formed in the supporting blocks and the combined blocks, combined threaded rods are fixedly installed in the combined through holes, and different numbers of combined threaded rods can be connected according to needs, so that the supporting area is adjusted, the positioning and supporting strength and stability are guaranteed, and supporting use and safety of the crane are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of cranes, and more specifically to a hydraulic support leg mechanism of a crane. Background Art

[0002] The hydraulic outriggers of a crane are divided into two types: main outriggers and auxiliary outriggers. They are used to support the crane when it turns to both sides for lifting operations, to prevent the crane from tipping over during operation. Hydraulic outriggers are installed in the middle position of the rear side of the vehicle body. When the crane is in operation, it normally turns to the rear of the vehicle body for operation, so the outriggers at the rear play an important supporting role to prevent the crane from tipping over during operation. When the crane is operating, the base of the hydraulic outriggers supports the total gravity of the entire device and the hoisted object. When the lifting operation begins, the auxiliary outriggers sometimes slip sideways, causing the center of gravity of the entire device to be unstable, leading to accidents, resulting in huge economic losses, and endangering the lives of operators.

[0003] The utility model with authorization announcement number CN204752038U relates to a hydraulic outrigger of a crane, which comprises a hydraulic outrigger body, the lower part of which is connected to a base via a connecting shaft, the base is provided with a bottom plate, the end of the bottom plate is inclined, a protrusion is provided on the lower side of the bottom plate, a connecting plate is provided on the upper side of the bottom plate, the lower part of the connecting plate is inclined, the upper part of the connecting plate is an arc-shaped structure, an arc-shaped protrusion is provided along the edge of the upper part of the connecting plate, a reinforcement plate is connected to the inner side of the connecting plate, the reinforcement plate is an arc-shaped structure, and the lower part of the reinforcement plate is connected to the bottom plate. The utility model has the advantages of simple structure, low operating cost, convenient and quick use, strong bearing capacity and anti-slip function.

[0004] In the above-mentioned public structure, the base is installed at the bottom of the hydraulic support leg, and there is a lack of a flip adjustment structure on the top, which is not conducive to flipping and retracting positioning when not in use, and is prone to interference. In addition, there is a lack of modular combination blocks at the bottom, and the support area cannot be adjusted according to the supported weight, which is easy to damage the road surface. The safety and stability are poor, and improvement is needed. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a hydraulic support leg mechanism for a crane, in which an articulated shaft and a hydraulic cylinder are installed through a bracket on one side of a fixed plate, which can be flipped and adjusted for retracted storage to avoid interference, and the support blocks are connected through a threaded tube at the bottom, and the combination blocks are installed in combination with a combined threaded rod. Different quantities can be connected as needed to adjust the support area, thereby ensuring the strength and stability of the positioning support, which is beneficial to the support use and safety of the crane.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A hydraulic support leg mechanism of a crane comprises a fixing plate, a bracket is fixedly welded to the bottom surface of the fixing plate, a long hinge hole is arranged inside the bracket, a hinge shaft is hinged inside the long hinge hole, one end of the hinge shaft is fixedly connected to a hydraulic cylinder, the hydraulic cylinder is hinged to one side of the inner part of the bracket, a threaded head is arranged at the rod head of the hydraulic cylinder, a threaded barrel is threadedly installed on the outer surface of the threaded head, a support block is fixedly connected to one end of the threaded barrel, the support block is located at the bottom position of the hydraulic cylinder, both side surfaces of the support block are fixedly connected to combination blocks, combination through holes are arranged inside the support block and the combination block, a combination threaded rod is fixedly installed inside the combination through hole, the combination threaded rod is fixedly connected to the inside of the combination block, combination nuts are threadedly installed at both end heads of the combination threaded rod, and the combination nuts are tightly connected to one side surface of the combination block.

[0008] Furthermore, there are two brackets, which are symmetrically connected to two sides of the hydraulic cylinder.

[0009] Furthermore, the combination blocks are installed in separate parts and are symmetrically distributed on both sides of the support block.

[0010] Furthermore, the support block and the combination block are both fixedly connected to the bottom surface of the threaded barrel. By symmetrically installing the combination block, it can be connected to both sides of the support block for auxiliary support, thereby ensuring the strength of the bottom connection and improving the safety of the hydraulic support.

[0011] Furthermore, a positioning block is fixedly connected to one side of the fixing plate, and a positioning groove is provided at one end of the positioning block.

[0012] Furthermore, the end of the hydraulic cylinder is fixedly connected with a positioning head, and the positioning head is inserted into the interior of the positioning groove.

[0013] Furthermore, the positioning block is located on one side of the interior of the bracket and at the upper end of the hydraulic cylinder. By setting a positioning groove on the positioning block and combining it with the positioning head for plug-in positioning, the hydraulic cylinder can be assisted in limiting the position to avoid tipping over during support, thereby improving safety and stability and facilitating adjustment and use.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In this solution, the hinge shaft and the hydraulic cylinder are installed through the bracket on one side of the fixed plate, which can be flipped and adjusted for retracted storage to avoid interference. The support block is connected through the threaded tube at the bottom. The combination block is installed in combination with the combined threaded rod. Different quantities can be connected as needed to adjust the support area, thereby ensuring the strength and stability of the positioning support, which is beneficial to the support use and safety of the crane.

[0016] (2) By symmetrically installing the combination blocks, they can be connected to both sides of the support blocks for auxiliary support, ensuring the strength of the bottom connection and improving the safety of the hydraulic support.

[0017] (3) By setting a positioning groove on the positioning block and combining it with the positioning head for plug-in positioning, the hydraulic cylinder can be assisted in limiting its position to avoid tipping during support, thereby improving safety and stability and facilitating adjustment and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the planar structure of the utility model;

[0020] Figure 3 It is a partial structural schematic diagram of the support connection of the utility model;

[0021] Figure 4 It is a layout structure diagram of the combination block connection of the utility model;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the support block of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1 fixing plate, 11 bracket, 12 long hinge hole, 13 hinge shaft, 14 hydraulic cylinder, 15 threaded head, 16 threaded barrel, 17 support block, 18 combination block, 2 combination through hole, 21 combination threaded rod, 22 combination nut, 23 positioning block, 24 positioning groove, 25 positioning head. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 , Figure 2 and Figure 5A hydraulic support leg mechanism of a crane comprises a fixing plate 1, a bracket 11 is fixedly welded on the bottom surface of the fixing plate 1, and the fixing plate 1 can be fixedly welded to the frame of the crane, which is convenient for positioning and use. A long hinge hole 12 is arranged inside the bracket 11, and a hinge shaft 13 is hinged inside the long hinge hole 12. The hinge shaft 13 is connected through the long hinge hole 12, and can be flipped and adjusted, or can be slid up and down to avoid interference, which is convenient for adjustment and use, and has high adaptability. A hydraulic cylinder 14 is fixedly connected to one end of the hinge shaft 13, and the hydraulic cylinder 14 is connected through the hinge shaft 13, which can be vertically positioned for support, which is convenient for the use of the crane. When not in use, the hydraulic cylinder 14 can be flipped to a horizontal position, which is convenient for contraction positioning, avoiding interference, and facilitating the movement of the crane. The hydraulic cylinder 14 is hinged to one side of the inner part of the bracket 11, and the rod head of the hydraulic cylinder 14 is provided with a threaded head 15, and a threaded barrel 16 is threadedly installed on the outer surface of the threaded head 15, which is threadedly installed through the threaded barrel 16, which is convenient for combined positioning and convenient for support and use. One end of the threaded barrel 16 is fixed A support block 17 is fixedly connected, and the support block 17 is located at the bottom position of the hydraulic cylinder 14. The two side surfaces of the support block 17 are fixedly connected with a combination block 18. The support block 17 and the combination block 18 are provided with a combination through hole 2 inside. A combination threaded rod 21 is fixedly installed inside the combination through hole 2. The combination threaded rod 21 is fixedly connected to the inside of the combination block 18. Both ends of the combination threaded rod 21 are threadedly installed with combination nuts 22. The combination nuts 22 are tightly connected to one side surface of the combination block 18. The combination threaded rod 21 is inserted into the combination through hole 2, and then the combination block 18 is installed from both ends. Different quantities can be selected for positioning. Finally, the combination nuts 22 are threadedly installed from the end position, and the combination blocks 18 at both ends can be locked and fixed, which can increase the support area of ​​the support block 17, thereby reducing the bottom support pressure, avoiding damage to the road surface during lifting, and facilitating adjustment according to the lifting weight of the crane to ensure safety in use. In addition, the split combination structure is conducive to disassembly and separation, avoiding interference during contraction and positioning, and is safe and stable.

[0027] See also Figure 1 and Figure 4 There are two brackets 11, which are symmetrically connected to the two sides of the hydraulic cylinder 14. The combination blocks 18 are installed in a split combination and are symmetrically distributed on the two sides of the support block 17. The support block 17 and the combination block 18 are both fixedly connected to the bottom surface of the threaded tube 16. By symmetrically installing the combination blocks, they can be connected to both sides of the support block for auxiliary support, thereby ensuring the strength of the bottom connection and improving the safety of the hydraulic support.

[0028] See also Figure 2 and Figure 3A positioning block 23 is fixedly connected to one side of the fixed plate 1, and a positioning groove 24 is provided at one end of the positioning block 23. A positioning head 25 is fixedly connected to the end of the hydraulic cylinder 14, and the positioning head 25 is inserted into the inside of the positioning groove 24. The positioning block 23 is located on one side of the interior of the bracket 11 and is located at the upper end of the hydraulic cylinder 14. The positioning groove is set by the positioning block, and the positioning head is inserted and positioned, so as to assist in limiting the hydraulic cylinder to avoid tipping over during support, improve safety and stability, and facilitate adjustment and use. When the hydraulic cylinder 14 is flipped and adjusted, it can be directly rotated and adjusted by the articulated shaft 13. When the crane is supported by the hydraulic cylinder 14, the positioning head 25 can be inserted into the inside of the positioning groove 24 first, so that the hydraulic cylinder 14 is connected to the positioning block 23. The limit can be combined to avoid tipping over and adjusting the articulated shaft 13, and the stability of the vertical connection of the hydraulic cylinder 14 can be ensured, and the safety of use can be ensured.

[0029] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A hydraulic support leg mechanism for a crane, comprising a fixing plate (1), a bracket (11) being fixedly welded to the bottom surface of the fixing plate (1), characterized in that: The support (11) is provided with a long hinge hole (12) inside, and a hinge shaft (13) is hinged inside the long hinge hole (12), one end of the hinge shaft (13) is fixedly connected to a hydraulic cylinder (14), and the hydraulic cylinder (14) is hinged to one side of the inside of the support (11), and the rod head of the hydraulic cylinder (14) is provided with a threaded head (15), and a threaded barrel (16) is threadedly installed on the outer surface of the threaded head (15), and one end of the threaded barrel (16) is fixedly connected to a support block (17), and the support block (17) is located in the hydraulic cylinder. At the bottom position of the pressure cylinder (14), both side surfaces of the support block (17) are fixedly connected with a combination block (18), the support block (17) and the combination block (18) are provided with a combination through hole (2) inside, a combination threaded rod (21) is fixedly installed inside the combination through hole (2), the combination threaded rod (21) is fixedly connected to the inside of the combination block (18), both ends of the combination threaded rod (21) are threadedly installed with combination nuts (22), and the combination nuts (22) are tightly connected to one side surface of the combination block (18).

2. A crane hydraulic support leg mechanism according to claim 1, characterized in that: There are two brackets (11), which are symmetrically connected to the two sides of the hydraulic cylinder (14).

3. The hydraulic support leg mechanism of a crane according to claim 1, characterized in that: The assembly blocks (18) are assembled and installed in separate parts and are symmetrically distributed on both sides of the support block (17).

4. The hydraulic support leg mechanism of a crane according to claim 1, characterized in that: The support block (17) and the assembly block (18) are both fixedly connected to the bottom surface of the threaded barrel (16).

5. The hydraulic support leg mechanism of a crane according to claim 1, characterized in that: A positioning block (23) is fixedly connected to one side of the fixing plate (1), and a positioning groove (24) is provided at one end of the positioning block (23).

6. The hydraulic support leg mechanism of a crane according to claim 1, characterized in that: The end of the hydraulic cylinder (14) is fixedly connected with a positioning head (25), and the positioning head (25) is inserted into the interior of the positioning groove (24).

7. The hydraulic support leg mechanism of a crane according to claim 5, characterized in that: The positioning block (23) is located on one side of the interior of the bracket (11) and at the upper end of the hydraulic cylinder (14).

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