Crane structure capable of being operated in multiple directions

Abstract

A crane structure capable of being operated in multiple directions comprises a base, a stand column, a suspension arm, a hinge frame arranged in the middle of the stand column, a jack connected between the hinge frame and the suspension arm, and a rotating mechanism which is fixed below the jack and connected with the hinge frame and comprises a shaft sleeve, a rotating connector and a self-locking piece. And the rotary joint extends into the shaft sleeve, is in rotary fit with the shaft sleeve and is limited and fixed by the self-locking piece. The lifting jack has the advantages that the assembly position of the lifting jack and the structural part of the engine crane is designed to be of a rotatable structure, a user can operate the crane handle in a multi-angle and multi-direction mode, and use flexibility and operation efficiency are improved; the rotating mechanism does not belong to a jack, can be separated independently and is easy to maintain and repair.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting machinery, and in particular relates to a crane structure which can be operated in multiple directions. Background Art

[0002] The engine crane is a kind of auto repair tool. During the assembly or repair of automobile engines, the engine is often hoisted and transported by a crane because the automobile engine is heavy. The bottom connection block of the hydraulic component of the traditional crane does not have a rotation function. After the hydraulic component is assembled on the crane, it cannot rotate. The crane can only be operated in one direction. The operation direction and position cannot be changed for multi-directional lifting. It is very inconvenient to use in some workshops or construction sites with small spaces. The function is greatly restricted, which greatly reduces the lifting efficiency. The Chinese utility model patent authorization announcement number CN208500175U introduces "a multi-directional crane", whose jack includes a main body and a mounting seat. The main body can rotate relative to the mounting seat, which is convenient for operators to pressurize from all directions. The patent realizes rotation through the mechanism of the hydraulic component itself. The rotating structure is limited by the hydraulic component body and cannot be separated separately. Once the hydraulic component fails, the rotation function fails after replacing other hydraulic components, that is, the applicability is single; in addition, it is difficult to assemble and not easy to maintain and repair.

[0003] In view of the above-mentioned prior art, the applicant has made a useful design, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0004] The purpose of the utility model is to provide a crane structure that can be operated in multiple directions. The assembly point of the hydraulic components of the engine crane and the structural components of the engine crane is designed to be a rotatable structure. The rotation function will not be affected when the jack is replaced. The structure is simple and the flexibility of use can be improved.

[0005] The purpose of the utility model is achieved in this way. A crane structure that can be operated in multiple directions includes a base, a column is arranged on the rear side of the base, a boom is installed on the top of the column, an articulated frame is arranged on the front side of the middle part of the column, a jack for providing a power source for the boom is connected between the articulated frame of the column and the boom, an extension arm is slidably arranged in the cavity of the boom, a hook is arranged at the end of the extension arm, and also includes a rotating mechanism fixed below the jack and connected to the articulated frame, the rotating mechanism includes a sleeve, a rotating joint and a self-locking member, the rotating joint extends into the sleeve and rotates with the sleeve, and is fixed by the self-locking member.

[0006] In a specific embodiment of the utility model, the shaft sleeve is fixed to the bottom of the jack, and the rotary joint is hinged to the articulated frame.

[0007] In another specific embodiment of the utility model, the outer wall of the rotary joint at the middle position is provided with a limiting groove extending in the circumferential direction, the sleeve is provided with a threaded hole on the side wall corresponding to the limiting groove, the self-locking part is a self-locking bolt, and the self-locking bolt extends from the threaded hole into the limiting groove, so that the rotary joint and the sleeve are fixed to each other and rotatable.

[0008] In another specific embodiment of the utility model, the outer wall of the rotary joint at the middle position is provided with a limiting groove extending in the circumferential direction, the shaft sleeve is provided with a matching groove on the inner wall corresponding to the limiting groove, and the self-locking part is a wire retaining ring, which is embedded between the limiting groove and the matching groove, so that the rotary joint and the shaft sleeve are fixed to each other and can rotate.

[0009] In another specific embodiment of the present invention, the rotary joint is expanded at the lower end to form a limiting boss. When the rotary joint extends into the sleeve, the bottom of the sleeve abuts against the boss end surface of the limiting boss to limit the assembly depth of the rotary joint. The limiting boss is hinged to the articulated frame.

[0010] In another specific embodiment of the utility model, a hinge hole is provided on the limiting boss and passes through from one side to the other side. The hinge frame includes a pair of fixing ears arranged parallel to each other and a hinge shaft. The middle part of the hinge shaft is passed through the hinge hole of the limiting boss, and the two ends are fixedly connected to the pair of fixing ears.

[0011] In a further specific embodiment of the present invention, the upper end of the shaft sleeve is fixedly welded to the bottom of the jack.

[0012] In a more specific embodiment of the present invention, the jack is provided with a hydraulic handle on one side, and the rotating mechanism drives the hydraulic handle to rotate when the rotating mechanism rotates.

[0013] Due to the adoption of the above structure, the utility model has the following beneficial effects compared with the prior art: the assembly point of the structural parts of the jack and the engine crane is designed to be a rotatable structure, the user can operate the crane handle at multiple angles and in multiple directions, thus improving the flexibility of use, minimizing the restrictions on the working scene to the greatest extent, and improving the working efficiency; the rotating mechanism does not belong to the jack, once the jack fails, it can be separated separately, and the rotating function will not be affected after replacing other jacks; the structure is simple, the assembly is convenient, and it is easy to maintain and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the crane described in the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0016] Figure 3 It is a structural schematic diagram of the rotating mechanism.

[0017] In the figure: 1. base; 2. column, 21. articulated frame, 211. fixing ear, 212. articulated shaft; 3. reinforcing rod; 4. boom, 41. extension arm; 5. jack, 51. hydraulic handle; 6. hook; 7. rotating mechanism, 71. bushing, 711. threaded hole, 72. rotating joint, 721. limiting groove, 722. limiting boss, 7221. boss end face, 7222. articulated hole, 73. self-locking piece. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0019] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are referring to the position state of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be understood as special limitations on the technical solutions provided by the present utility model. Example 1

[0020] See also Figure 1 and Figure 2 The utility model relates to a crane structure that can be operated in multiple directions, including a base 1, a column 2 is arranged at the rear side of the base 1, a pair of reinforcing rods 3 are connected between the column 2 and the base 1, a boom 4 is installed on the top of the column 2, an articulated frame 21 is arranged at the front side of the middle part of the column 2, a jack 5 for providing a power source for the boom 4 is connected between the articulated frame 21 of the column 2 and the boom 4, and a hydraulic handle 51 is arranged on one side of the jack 5. An extension arm 41 is slidably arranged in the cavity of the boom 4, and a hook 6 is arranged at the end of the extension arm 41.

[0021] The technical key point of the utility model is that a rotating mechanism 7 is arranged at the assembly point of the hydraulic components of the engine crane and the structural components of the engine crane, that is, at the assembly point of the jack 5 and the articulated frame 21. When the rotating mechanism 7 rotates, it drives the hydraulic handle 51 to rotate, so that the user can operate at multiple angles and directions. The rotating mechanism 7 includes a sleeve 71, a rotating joint 72 and a self-locking member 73. The rotating joint 72 extends into the sleeve 71 to rotate with the sleeve 71, and is limited and fixed by the self-locking member 73.

[0022] In this embodiment, the upper end of the shaft sleeve 71 is welded and fixed to the bottom of the jack 5 , and the rotary joint 72 is hinged to the hinge frame 21 .

[0023] See Figure 3 The outer wall of the rotary joint 72 at the middle position is provided with a limiting groove 721 extending in the circumferential direction, and the shaft sleeve 71 is provided with a threaded hole 711 on the side wall corresponding to the limiting groove 721. The self-locking member 73 is a self-locking bolt, which extends from the threaded hole 711 into the limiting groove 721, so that the rotary joint 72 and the shaft sleeve 71 are fixed to each other and rotatable, and prevent the rotary joint 72 from being pulled out of the shaft sleeve 71.

[0024] Furthermore, the rotary joint 72 is expanded at the lower end to form a limiting boss 722. When the rotary joint 72 extends into the sleeve 71, the bottom of the sleeve 71 abuts against the boss end face 7221 of the limiting boss 722, thereby limiting the assembly depth of the rotary joint 72 and preventing the top of the fitting 721 from directly contacting the bottom of the base of the jack 5.

[0025] The limiting boss 722 is provided with a hinge hole 7222 which passes through from one side to the other side. The hinge frame 21 includes a pair of fixing ears 211 arranged parallel to each other and a hinge shaft 212. The middle part of the hinge shaft 212 is passed through the hinge hole 7222 of the limiting boss 722, and the two ends are fixedly connected to the pair of fixing ears 211.

[0026] The rotary joint 72 does not belong to the jack 5. Once the jack 5 fails, it can be separated separately, and the rotation function will not be affected after replacing other jacks 5. It has a simple structure, is easy to assemble, and is easy to maintain and repair. Example 2

[0027] The outer wall of the rotary joint 72 at the middle position is provided with a limiting groove 721 extending in the circumferential direction, and the shaft sleeve 71 is provided with a matching groove (not shown) on the inner wall corresponding to the limiting groove 721. The self-locking member 73 is a wire retaining ring, which is embedded between the limiting groove 721 and the matching groove, so that the rotary joint 72 and the shaft sleeve 71 are fixed to each other and rotatable. Example 3

[0028] The limiting boss 722 of the rotary joint 72 is welded to the bottom of the jack 5 , and the shaft sleeve 71 is hinged to the hinge frame 21 .

Claims

1. A crane structure capable of being operated in multiple directions, comprising a base (1), a column (2) being arranged at the rear side of the base (1), a boom (4) being installed at the top of the column (2), an articulated frame (21) being arranged at the front side of the middle part of the column (2), a jack (5) being connected between the articulated frame (21) of the column (2) and the boom (4) for providing a power source for the boom (4), an extension arm (41) being slidably arranged in the cavity of the boom (4), a hook (6) being arranged at the end of the extension arm (41), characterized in that: It also includes a rotating mechanism (7) fixed below the jack (5) and connected to the articulated frame (21), the rotating mechanism (7) including a shaft sleeve (71), a rotating joint (72) and a self-locking member (73), the rotating joint (72) extending into the shaft sleeve (71) to rotate with the shaft sleeve (71), and being fixed in position by the self-locking member (73).

2. The multi-directionally operable crane structure according to claim 1, characterized in that: The shaft sleeve (71) is fixed to the bottom of the jack (5), and the rotary joint (72) is hinged to the hinge frame (21).

3. The multi-directionally operable crane structure according to claim 1, characterized in that: The outer wall of the rotary joint (72) at the middle position is provided with a limiting groove (721) extending in the circumferential direction, and the shaft sleeve (71) is provided with a threaded hole (711) on the side wall corresponding to the limiting groove (721). The self-locking member (73) is a self-locking bolt, which extends from the threaded hole (711) into the limiting groove (721) to fix the rotary joint (72) and the shaft sleeve (71) to each other and enable rotation.

4. The multi-directionally operable crane structure according to claim 1, characterized in that: The outer wall of the rotary joint (72) at the middle position is provided with a limiting groove (721) extending in the circumferential direction, and the shaft sleeve (71) is provided with a matching groove on the inner wall corresponding to the limiting groove (721). The self-locking member (73) is a wire retaining ring, and the wire retaining ring is embedded between the limiting groove (721) and the matching groove, so that the rotary joint (72) and the shaft sleeve (71) are fixed to each other and can rotate.

5. The multi-directionally operable crane structure according to claim 2, characterized in that: The rotary joint (72) is expanded at the lower end to form a limiting boss (722). When the rotary joint (72) extends into the shaft sleeve (71), the bottom of the shaft sleeve (71) abuts against the boss end surface (7221) of the limiting boss (722), thereby limiting the assembly depth of the rotary joint (72). The limiting boss (722) is hinged to the articulated frame (21).

6. The multi-directionally operable crane structure according to claim 5, characterized in that: The limiting boss (722) is provided with a hinge hole (7222) which passes through from one side to the other side. The hinge frame (21) includes a pair of fixing ears (211) arranged parallel to each other and a hinge shaft (212). The middle part of the hinge shaft (212) is passed through the hinge hole (7222) of the limiting boss (722), and the two ends are fixedly connected to the pair of fixing ears (211).

7. The multi-directionally operable crane structure according to claim 1, characterized in that: The upper end of the shaft sleeve (71) is fixedly welded to the bottom of the jack (5).

8. The multi-directionally operable crane structure according to claim 1, characterized in that: The jack (5) is provided with a hydraulic handle (51) on one side, and the rotating mechanism (7) drives the hydraulic handle (51) to rotate when rotating.

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