Gantry crane supporting leg

Abstract

The utility model provides a portal crane landing leg which comprises a pre-fixing structure, the pre-fixing structure comprises a rotating lead screw, the rotating lead screw is rotatably connected to the interior of a mounting hole, a fitting groove is formed in the top of the rotating lead screw, a lifting ring is arranged on the outer wall of the rotating lead screw, a matching hole is formed in the middle of the lifting ring, and the matching hole is matched with the fitting groove. The matching hole is matched with the rotating lead screw, and a fixing block is arranged on the outer wall of the lifting ring. The supporting leg is reasonable in design, the supporting leg body and the trolley can be pre-fixed through the pre-fixing structure capable of being unfolded outwards, the spring telescopic rod is inserted into the trolley to rotate the rotating lead screw, the rotating lead screw drives the lifting ring to move upwards, then the lifting ring drives the push rod arranged on the outer wall to rotate, and the supporting leg body is fixed. And the push rod drives the spring telescopic rod to move outwards and be attached to the inner wall of a pre-fixing hole of the trolley, so that pre-fixing of the supporting leg body is achieved, and follow-up mounting of fixing bolts is facilitated.

Description

Technical Field

[0001] The utility model mainly relates to the field of gantry cranes, and in particular to a gantry crane outrigger. Background Art

[0002] Gantry crane is a variation of bridge crane. In ports, it is mainly used for loading and unloading of outdoor cargo yards, material yards, and bulk cargo. Its metal structure is like a door-shaped frame, with two legs installed under the main beam, which can walk directly on the track on the ground. Both ends of the main beam can have outward cantilever beams. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility, and are widely used in port cargo yards.

[0003] The inventor discovered the following defects during the operation of the specific embodiment:

[0004] Flexible legs and rigid legs are respectively provided on both sides of the crane. The legs are arranged between the main beam and the trolley and are used to move the main beam. However, when the legs are connected to the trolley, the legs need to be lifted by the crane and moved to the top of the trolley for connection through bolts. However, when the legs are lifted and connected to the trolley, the legs cannot be pre-fixed with the trolley, resulting in subsequent bolts being unable to fit into the bolt holes on the surface of the trolley during installation or the legs colliding with the trolley and causing damage.

[0005] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Utility Model Content

[0006] 1. Technical problems to be solved by the utility model:

[0007] The utility model provides a gantry crane outrigger to solve the technical problems existing in the above-mentioned background technology.

[0008] 2. Technical solution:

[0009] To achieve the above object, the utility model provides a technical solution: a gantry crane outrigger, comprising an outrigger body, a mounting hole is provided in the middle of the outrigger body, an mounting plate is provided at the bottom of the outrigger body, and a connecting block is provided at the bottom of the mounting plate;

[0010] A pre-fixed structure includes a rotating screw rod, which is rotatably connected to the inside of the mounting hole, a fitting groove is provided on the top of the rotating screw rod, a lifting ring is provided on the outer wall of the rotating screw rod, a matching hole is provided in the middle of the lifting ring, the matching hole cooperates with the rotating screw rod, a fixing block is provided on the outer wall of the lifting ring, a push rod is rotatably connected to the inner side of the fixing block, and a spring telescopic rod is provided at one end of the push rod.

[0011] Furthermore, the number of the leg bodies is set to two, an X-shaped connecting frame is provided between the two leg bodies, and the leg body and the connecting frame are connected by bolts.

[0012] Furthermore, a bolt hole is provided inside the mounting plate, a fixing bolt is provided inside the bolt hole, and the fixing bolt is connected to the trolley.

[0013] Furthermore, the number of the push rods is set to be multiple, and the multiple push rods are arranged in a circular array on the outer wall of the lifting circle.

[0014] Furthermore, the top of the push rod is rotatably connected to a rotating rod, and one end of the rotating rod is rotatably connected to a connecting block.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0017] The utility model can pre-fix the leg body and the trolley by setting a pre-fixing structure that can be expanded outward, insert the spring telescopic rod into the interior of the trolley and rotate the rotating screw, so that the rotating screw drives the lifting circle to move upward, and then the lifting circle drives the push rod set on the outer wall to rotate, so that the push rod drives the spring telescopic rod to move outward and fit the inner wall of the pre-fixed hole of the trolley, thereby realizing the pre-fixation of the leg body and facilitating the subsequent installation of the fixing bolts. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the leg body of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the pre-fixed structure of the utility model.

[0021] Reference numerals:

[0022] 1. Leg body; 2. Connecting frame; 3. Mounting plate; 4. Bolt hole; 5. Fixing bolt; 6. Mounting hole; 7. Connecting block; 8. Pre-fixing structure; 801. Rotating screw; 802. Fitting groove; 803. Lifting ring; 804. Matching hole; 805. Fixing block; 806. Push rod; 807. Spring telescopic rod; 808. Rotating rod. DETAILED DESCRIPTION

[0023] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0027] Refer to the attached Figure 1-3A gantry crane outrigger comprises an outrigger body 1, a mounting hole 6 is provided in the middle of the outrigger body 1, an mounting plate 3 is provided at the bottom of the outrigger body 1, and a connecting block 7 is provided at the bottom of the mounting plate 3;

[0028] The pre-fixed structure 8 includes a rotating screw 801, which is rotatably connected to the inside of the mounting hole 6. A fitting groove 802 is provided on the top of the rotating screw 801. A lifting ring 803 is provided on the outer wall of the rotating screw 801. A matching hole 804 is provided in the middle of the lifting ring 803. The matching hole 804 cooperates with the rotating screw 801. A fixing block 805 is provided on the outer wall of the lifting ring 803. A push rod 806 is rotatably connected to the inner side of the fixing block 805. A spring telescopic rod 807 is provided at one end of the push rod 806.

[0029] Furthermore, the number of the leg bodies 1 is set to two, and an X-shaped connecting frame 2 is set between the two leg bodies 1. The leg body 1 and the connecting frame 2 are connected by bolts. The leg bodies 1 on both sides can be connected by the set connecting frame 2, so that the leg body 1 can be stably installed on the top of the trolley.

[0030] Furthermore, a bolt hole 4 is opened inside the mounting plate 3, and a fixing bolt 5 is arranged inside the bolt hole 4. The fixing bolt 5 is connected to the trolley. After the pre-fixed structure 8 is fixed to the trolley, the fixing bolt 5 is inserted into the hole of the trolley to fix the leg body 1 to the trolley.

[0031] Furthermore, the number of the push rods 806 is set to be multiple, and the multiple push rods 806 are arranged in a ring array on the outer wall of the lifting circle 803. The top of the push rod 806 is rotatably connected to a rotating rod 808, and one end of the rotating rod 808 is rotatably connected to the connecting block 7. The outer wall of the spring telescopic rod 807 is provided with a rubber ring for fitting with the inside of the hole of the trolley to avoid large shaking of the leg body 1 during the lifting process.

[0032] In this embodiment, when the leg body 1 needs to be installed on the top of the trolley, the connecting frame 2 is installed on the two leg body 1 brackets by bolts to fix the leg body 1, and then the leg body 1 is lifted by a crane, so that the pre-fixed structure 8 at the bottom of the leg body 1 is inserted into the trolley hole, and the rotating screw 801 is manually rotated, and the rotating screw 801 drives the lifting ring 803 to move upward, and the lifting ring 803 drives the push rod 806 to rotate, so that the push rod 806 drives the spring telescopic rod 807 to expand outward, and the push rod 806 drives the rotating rod 808 to rotate to limit the push rod 806, so that the spring telescopic rod 807 is fitted with the inner wall of the hole of the trolley for pre-fixation, and then the fixing bolt 5 is inserted into the inside of the bolt hole 4, so that one end of the fixing bolt 5 is inserted into the inside of the bolt hole 4 of the trolley to fix the leg body 1.

[0033] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A gantry crane outrigger, characterized in that: include A leg body (1), wherein a mounting hole (6) is provided in the middle of the leg body (1), a mounting plate (3) is provided at the bottom of the leg body (1), and a connecting block (7) is provided at the bottom of the mounting plate (3); The pre-fixed structure (8) comprises a rotating screw (801), wherein the rotating screw (801) is rotatably connected to the inside of the mounting hole (6), a fitting groove (802) is provided at the top of the rotating screw (801), a lifting ring (803) is provided on the outer wall of the rotating screw (801), a matching hole (804) is provided in the middle of the lifting ring (803), the matching hole (804) and the rotating screw (801) cooperate with each other, a fixing block (805) is provided on the outer wall of the lifting ring (803), a push rod (806) is rotatably connected to the inner side of the fixing block (805), and a spring telescopic rod (807) is provided at one end of the push rod (806).

2. A gantry crane outrigger according to claim 1, characterized in that: The number of the leg bodies (1) is set to two, an X-shaped connecting frame (2) is provided between the two leg bodies (1), and the leg body (1) and the connecting frame (2) are connected by bolts.

3. A gantry crane outrigger according to claim 1, characterized in that: A bolt hole (4) is provided inside the mounting plate (3), a fixing bolt (5) is provided inside the bolt hole (4), and the fixing bolt (5) is connected to the trolley.

4. The gantry crane outrigger according to claim 1, characterized in that: The number of the push rods (806) is set to be multiple, and the multiple push rods (806) are arranged in a circular array on the outer wall of the lifting ring (803).

5. The gantry crane outrigger according to claim 1, characterized in that: The top of the push rod (806) is rotatably connected to a rotating rod (808), and one end of the rotating rod (808) is rotatably connected to a connecting block (7).

Images