Improved gantry crane

Abstract

The utility model discloses an improved portal crane, including portal crane main part and switching hook assembly, switching hook assembly sets up at the bottom of portal crane main part, switching hook assembly includes U type seat, ring column, hook body, clamping sleeve, positioning sleeve, screw frame, link rod, plug rod, handle, first sliding slot, first sliding block, spring, L type clamping seat, second sliding slot and second sliding block. The utility model provides an improved portal crane has the advantages of convenient conversion, solved the traditional hook conversion mode, usually needs operating personnel to help multiple tools, such as spanner, screwdriver etc.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, and specifically to an improved gantry crane. Background Technology

[0002] Gantry cranes are large lifting equipment commonly used in industrial production, logistics warehousing, and port terminals. They are responsible for lifting various heavy objects. In actual operation scenarios, due to the different shapes, weights, materials, and lifting requirements of the objects being lifted, it is often necessary to equip them with a variety of different types of hooks to meet diverse lifting needs.

[0003] Traditional hook conversion methods typically require operators to use various tools, such as wrenches and screwdrivers, to disassemble and install the connecting parts between the hook and the crane. This process not only requires operators to have certain professional skills, but also involves cumbersome procedures and consumes a lot of time. For example, in some urgent lifting tasks, frequent hook changes may cause task delays and affect overall work efficiency. Therefore, there is an urgent need for an improved gantry crane to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this utility model is to provide an improved gantry crane with the advantage of easy conversion, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an improved gantry crane, comprising a gantry crane body and a switching hook assembly, wherein the switching hook assembly is disposed at the bottom of the gantry crane body, and the switching hook assembly comprises a U-shaped seat, an annular column, a hook body, a ferrule, a positioning sleeve, a threaded frame, a connecting rod, a plug rod, a handle, a first sliding groove, a first sliding block, a spring, an L-shaped seat, a second sliding groove, and a second sliding block.

[0006] Furthermore, the inner cavity of the U-shaped seat is rotatably connected to an annular column via a bearing, the top of the U-shaped seat is fixedly connected to the bottom of the gantry crane body, and clamps are fixedly installed on both sides of the annular column surface.

[0007] Furthermore, hook bodies are fixedly installed around the center of the annular column surface, and positioning sleeves are fixedly installed on both sides of the front and back of the U-shaped seat, with insertion rods provided in the inner cavity of the positioning sleeves.

[0008] Furthermore, a second sliding groove is provided inside the insertion rod, and a second slider is slidably connected inside the second sliding groove. The two sides of the second slider are fixedly connected to the inner cavity of the positioning sleeve.

[0009] Furthermore, a connecting rod is fixedly installed on the side of the insertion rod that is relatively far away from each other. The connecting rod is internally connected to a threaded bracket via a threaded connection. The side of the threaded bracket that is relatively close to each other is rotatably connected to the outer side of the U-shaped seat via a bearing.

[0010] Furthermore, handles are provided on both sides of the U-shaped seat, and L-shaped card seats are fixedly installed on the front and back of the handles. A first sliding groove is provided inside the handle.

[0011] Furthermore, a first slider is slidably connected inside the first groove, and the side of the first slider that is relatively close to it is fixedly connected to both sides of the U-shaped seat. A spring is fixedly installed in the inner cavity of the first groove and at the top of the first slider.

[0012] In summary, due to the adoption of the above-mentioned technologies, the beneficial effects of this utility model are:

[0013] This invention allows for height adjustment of the hook switching assembly by setting the main body of the gantry crane. The hook switching assembly facilitates the hoisting and securing of goods. When switching the hook body, the annular column is rotated to the designated position, followed by rotating the threaded frame. This threaded frame drives the connecting rod and insert rod inwards, inserting the insert rod into the inner cavity of the clamp. Then, the handle is released, and under the action of the spring, the handle moves the L-shaped clamp downwards. The L-shaped clamp engages the connecting rod, preventing displacement and further limiting its position. This design offers the advantage of convenient switching, solving the problem of traditional hook switching methods that typically require operators to use various tools, such as wrenches and screwdrivers, to disassemble and install the hook and crane connection components. This process not only requires operators to have certain professional skills but is also cumbersome and time-consuming. For example, in some urgent hoisting tasks, frequent hook changes can lead to task delays and affect overall work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the switching hook assembly structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the handle of this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the insertion rod of this utility model.

[0018] In the diagram: 1. Gantry crane body; 2. Hook switching assembly; 21. U-shaped seat; 22. Ring column; 23. Hook body; 24. Sleeve; 25. Positioning sleeve; 26. Threaded bracket; 27. Connecting rod; 28. Insert rod; 29. ​​Handle; 291. First slide groove; 292. First slider; 293. Spring; 294. L-shaped seat; 295. Second slide groove; 296. Second slider. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] This utility model provides, for example Figure 1-4 As shown, an improved gantry crane includes a gantry crane body 1 and a switching hook assembly 2. The switching hook assembly 2 is located at the bottom of the gantry crane body 1. The switching hook assembly 2 includes a U-shaped seat 21, an annular column 22, a hook body 23, a sleeve 24, a positioning sleeve 25, a threaded bracket 26, a connecting rod 27, a plug rod 28, a handle 29, a first slide groove 291, a first slider 292, a spring 293, an L-shaped seat 294, a second slide groove 295, and a second slider 296.

[0021] More specifically, the height of the switching hook assembly 2 is adjusted by setting the main body 1 of the gantry crane. The switching hook assembly 2 facilitates the hoisting and fixing of goods. When switching the hook body 23, the annular column 22 is rotated to the designated position, and then the threaded frame 26 is rotated. The threaded frame 26 drives the connecting rod 27 and the insert rod 28 to move inward. The insert rod 28 is inserted into the inner cavity of the sleeve 24. Then the handle 29 is released. Under the action of the spring 293, the handle 29 drives the L-shaped card seat 294 to move downward. Under the action of the L-shaped card seat 294, the connecting rod 27 is engaged to prevent its displacement and further limit the connection rod 27. It has the advantage of convenient switching.

[0022] In some embodiments, the inner cavity of the U-shaped seat 21 is rotatably connected to an annular column 22 via a bearing. The top of the U-shaped seat 21 is fixedly connected to the bottom of the gantry crane body 1. Sleeves 24 are fixedly installed on both sides of the annular column 22. More specifically, the hook body 23 and the sleeves 24 are installed by setting the annular column 22, and the goods are lifted by setting the hook body 23.

[0023] In some embodiments, hook bodies 23 are fixedly installed around the center of the surface of the annular column 22, and positioning sleeves 25 are fixedly installed on both sides of the front and back of the U-shaped seat 21. The inner cavity of the positioning sleeve 25 is provided with a rod 28. More specifically, the positioning sleeve 25 is used to accommodate the rod 28, and the rod 28 is used to limit the annular column 22 through the retaining sleeve 24.

[0024] In some embodiments, the insertion rod 28 has a second sliding groove 295 inside, and a second slider 296 is slidably connected inside the second sliding groove 295. The two sides of the second slider 296 are fixedly connected to the inner cavity of the positioning sleeve 25. More specifically, the second slider 296 is limited by the second sliding groove 295, and the insertion rod 28 is limited by the second slider 296 to prevent the insertion rod 28 from shaking during movement.

[0025] In some embodiments, a connecting rod 27 is fixedly installed on the side of the insertion rod 28 that is relatively far away from the insertion rod 28. A threaded bracket 26 is rotatably connected to the inside of the connecting rod 27 by means of a thread. The side of the threaded bracket 26 that is relatively close to the insertion rod 28 is rotatably connected to the outside of the U-shaped seat 21 by means of a bearing. More specifically, the positions of the connecting rod 27 and the insertion rod 28 are moved by setting the threaded bracket 26.

[0026] In some embodiments, handles 29 are provided on both sides of the U-shaped seat 21, and L-shaped card seats 294 are fixedly installed on the front and back of the handles 29. A first sliding groove 291 is provided inside the handles 29. More specifically, the first sliding groove 291 is used to limit the first slider 292.

[0027] In some embodiments, a first slider 292 is slidably connected inside the first groove 291. The side of the first slider 292 that is relatively close to the first slider 292 is fixedly connected to both sides of the U-shaped seat 21. A spring 293 is fixedly installed in the inner cavity of the first groove 291 and at the top of the first slider 292. More specifically, the handle 29 is limited by the first slider 292 to prevent the handle 29 from shaking during movement, and the handle 29 is reset by the spring 293.

[0028] Working principle:

[0029] Step 1: Adjust the height of the hook switching assembly 2 by setting the gantry crane body 1. The hook switching assembly 2 facilitates the hoisting and fixing of goods. When switching the hook body 23, rotate the annular column 22 to the designated position, and then rotate the threaded frame 26. The threaded frame 26 drives the connecting rod 27 and the insertion rod 28 to move inward. The insertion rod 28 is inserted into the inner cavity of the sleeve 24.

[0030] Step 2: Next, release handle 29. Under the action of spring 293, handle 29 drives L-shaped bracket 294 to move downward. Under the action of L-shaped bracket 294, connecting rod 27 is engaged to prevent displacement and further limit the position of connecting rod 27, which has the advantage of convenient conversion.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. An improved gantry crane, characterized in that: The system includes a gantry crane body (1) and a switching hook assembly (2). The switching hook assembly (2) is located at the bottom of the gantry crane body (1). The switching hook assembly (2) includes a U-shaped seat (21), an annular column (22), a hook body (23), a ferrule (24), a positioning sleeve (25), a threaded frame (26), a connecting rod (27), a plug rod (28), a handle (29), a first slide groove (291), a first slider (292), a spring (293), an L-shaped seat (294), a second slide groove (295), and a second slider (296).

2. The improved gantry crane according to claim 1, characterized in that: The inner cavity of the U-shaped seat (21) is rotatably connected to an annular column (22) via a bearing. The top of the U-shaped seat (21) is fixedly connected to the bottom of the gantry crane body (1). Sleeves (24) are fixedly installed on both sides of the annular column (22).

3. The improved gantry crane according to claim 1, characterized in that: The hook body (23) is fixedly installed around the center of the surface of the annular column (22). The positioning sleeve (25) is fixedly installed on both sides of the front and back of the U-shaped seat (21). The inner cavity of the positioning sleeve (25) is provided with a plug rod (28).

4. The improved gantry crane according to claim 1, characterized in that: The insert (28) has a second groove (295) inside, and a second slider (296) is slidably connected inside the second groove (295). The two sides of the second slider (296) are fixedly connected to the inner cavity of the positioning sleeve (25).

5. The improved gantry crane according to claim 1, characterized in that: A connecting rod (27) is fixedly installed on the side of the insert (28) that is relatively far away. A threaded bracket (26) is rotatably connected inside the connecting rod (27) by a thread. The side of the threaded bracket (26) that is relatively close to the insert is rotatably connected to the outside of the U-shaped seat (21) by a bearing.

6. The improved gantry crane according to claim 1, characterized in that: The U-shaped seat (21) is provided with handles (29) on both sides. The front and back of the handles (29) are fixedly installed with L-shaped card seats (294). The handles (29) have a first groove (291) inside.

7. The improved gantry crane according to claim 1, characterized in that: The first slide groove (291) is slidably connected to the first slider (292). The side of the first slider (292) that is relatively close to the first slider is fixedly connected to both sides of the U-shaped seat (21). A spring (293) is fixedly installed in the inner cavity of the first slide groove (291) and at the top of the first slider (292).

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