Cantilever crane with height-adjustable stand column

Abstract

The utility model relates to a cantilever crane with an adjustable stand column height, which relates to the field of crane equipment and comprises a telescopic stand column mechanism, a rotary arm, a rotary driving device arranged on the rotary arm and an electric hoist, the telescopic stand column mechanism comprises an inner stand column, an outer stand column, a lifting driving assembly and a guiding assembly, a mounting sliding groove is formed in the outer stand column, one end of the inner stand column is inserted into the mounting sliding groove, the other end of the inner stand column is connected with the rotating arm, and the lifting driving assembly is used for driving the inner stand column to ascend and descend in the mounting sliding groove; the guide assembly is used for guiding lifting of the inner stand column. When the cantilever crane works, the inner stand column is lifted, so that the cantilever crane can meet the lifting height of lifted objects, and when the bridge type double-beam crane needs to be used, the inner stand column is lowered, so that the safety in the lifting process is improved, and collision accidents are reduced.

Description

Technical Field

[0001] This application relates to the field of crane equipment, and more particularly to a cantilever crane with adjustable column height. Background Technology

[0002] A jib crane is a type of lightweight crane widely used in industrial fields for material handling and short-distance lifting. It mainly consists of a column, slewing boom, electric hoist, and control system, and is characterized by its light weight, large span, high lifting capacity, and economic durability.

[0003] In actual production, due to changes in the items being hoisted, it is necessary to increase the lifting height of the cantilever crane. However, a double-girder bridge crane is installed on the top of the hoisting workshop for daily production. After the height of the cantilever arm is increased, it is easy for it to interfere with the double-girder bridge crane during operation, thus increasing the risk of accidents and reducing the safety of the hoisting process.

[0004] Regarding the aforementioned technologies, the inventors believe that in order to meet the hoisting needs of different items in the hoisting workshop, it is necessary to increase the lifting height of the cantilever crane. After the height of the cantilever is increased, it is easy to interfere with the bridge double-girder crane on the top of the workshop, thereby reducing the safety of the hoisting process. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a cantilever crane with an adjustable column height.

[0006] This application provides a cantilever crane with an adjustable column height, which adopts the following technical solution:

[0007] An adjustable column height cantilever crane includes a telescopic column mechanism, a slewing arm, a slewing drive device mounted on the slewing arm, and an electric hoist. The telescopic column mechanism includes an inner column, an outer column, a lifting drive assembly, and a guide assembly. The outer column has an internal mounting groove. One end of the inner column is inserted into the mounting groove, and the other end is connected to the slewing arm. The lifting drive assembly is used to drive the inner column to rise and fall in the mounting groove, and the guide assembly is used to guide the rise and fall of the inner column.

[0008] By adopting the above technical solution, when the cantilever crane needs to work, the lifting drive assembly drives the inner column to slide in the installation groove, causing the inner column to rise, thus ensuring that the lifting height of the cantilever crane meets the needs of the hoisted goods. The guide assembly guides the lifting of the inner column, thereby improving the stability during the lifting process. When the bridge double-girder crane needs to work, the lifting drive assembly drives the inner column to lower, thereby reducing interference between the cantilever crane and the bridge double-girder crane, and thus improving the safety and stability of the hoisting process.

[0009] Preferably, the outer column has a base plate at the end away from the rotary arm, and the lifting drive assembly includes a mounting base on the base plate, a lifting cylinder on the mounting base, and a connecting block at the end of the lifting cylinder away from the mounting base, the connecting block being connected to the inner column.

[0010] By adopting the above technical solution, the mounting base is placed on the base plate, which improves the stability of the lifting drive assembly driving the inner column to rise and fall in the mounting groove. The lifting cylinder drives the inner column to rise and fall through the connecting block, thereby improving the flexibility and adaptability of the cantilever crane.

[0011] Preferably, there are multiple lifting drive components, which are arranged in a circular array on the outer side of the outer column.

[0012] By adopting the above technical solution, multiple lifting drive components drive the inner column to rise and fall, so that the inner column is balanced by force during the lifting process, thereby improving the stability of the inner column lifting process, and thus improving the stability of the cantilever crane during operation.

[0013] Preferably, the mounting base is provided with two first connecting plates, and a first connecting shaft is provided between the two first connecting plates. The first connecting shaft is fixedly connected to the first connecting plates and rotatably connected to the lifting cylinder.

[0014] Preferably, the connecting block is provided with two second connecting plates, and a second connecting shaft is provided between the two second connecting plates. The second connecting shaft is fixedly connected to the second connecting plates and rotatably connected to the lifting cylinder.

[0015] By adopting the above technical solution, one end of the lifting cylinder is hinged to the mounting base through the first connecting shaft, and the other end is hinged to the connecting block through the second connecting shaft, which makes the installation process of the lifting cylinder simple and convenient, and improves the safety of the lifting cylinder driving the inner column to lift.

[0016] Preferably, the guide assembly includes a guide rod and a guide sleeve. The guide rod is fixedly connected to the inner column, and the axis of the guide rod is parallel to the axis of the inner column. The guide sleeve is disposed on the outer column, and the guide rod and the guide sleeve are slidably connected.

[0017] By adopting the above technical solution, when the inner column is raised or lowered, the guide rod slides in the guide sleeve, thereby limiting and guiding the raising and lowering process of the inner column, reducing the phenomenon of shaking of the inner column during the raising and lowering process, and thus improving the stability of the raising and lowering process of the inner column.

[0018] Preferably, there are multiple guide components, which are arranged in a circular array on the outer side of the inner column.

[0019] By adopting the above technical solution, multiple guide components are evenly arranged on the outer sides of the inner and outer columns, so that the force is balanced during the lifting and lowering process of the inner column, which further improves the stability of the lifting and lowering process of the inner column.

[0020] Preferably, the outer column is provided with a plurality of reinforcing ribs at one end near the base plate, and the plurality of reinforcing ribs are arranged in a circular array on the outer side of the outer column.

[0021] By adopting the above technical solution, the reinforcement of the rib plate improves the structural strength of the outer column, thereby enhancing the working safety of the cantilever crane.

[0022] In summary, this application has the following beneficial technical effects:

[0023] 1. This application uses a lifting cylinder to drive the inner column to rise and fall in the installation groove of the outer column, thereby adjusting the height of the cantilever crane according to the usage requirements, thus improving the flexibility of the cantilever crane. It can meet the lifting height requirements of the hoisted items without interfering with the bridge double girder crane, and improve the installation stability of the hoisting process.

[0024] 2. This application guides the lifting process of the inner column through a guide component, thereby improving the stability of the lifting process of the inner column and thus improving the safety and stability of the cantilever crane height adjustment. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of the adjustable column height cantilever crane provided in the embodiments of this application;

[0026] Figure 2 This is a partial cross-sectional structural diagram of the outer column, inner column, base plate, and reinforcing rib provided in the embodiments of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Telescopic column mechanism; 11. Inner column; 12. Outer column; 121. Mounting slide; 13. Lifting drive assembly; 131. Mounting base; 1311. First connecting plate; 1312. First connecting shaft; 132. Lifting cylinder; 133. Connecting block; 1331. Second connecting plate; 1332. Second connecting shaft; 14. Guide assembly; 141. Guide rod; 142. Guide sleeve; 15. Base plate; 16. Reinforcing rib; 2. Rotary arm; 3. Rotary drive device; 4. Electric hoist. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0029] This application discloses a cantilever crane with adjustable column height.

[0030] Reference Figure 1 and Figure 2 An adjustable-height cantilever crane includes a telescopic column mechanism 1, a slewing arm 2, a slewing drive device 3 mounted on the slewing arm 2, and an electric hoist 4. The telescopic column mechanism 1 includes an inner column 11, an outer column 12, a lifting drive assembly 13, and a guide assembly 14. The outer column 12 has an internal mounting groove 121. One end of the inner column 11 is inserted into the mounting groove 121, and the other end is connected to the slewing arm 2. The lifting drive assembly 13 drives the inner column 11 to rise and fall within the mounting groove 121, and the guide assembly 14 guides the rising and falling of the inner column 11.

[0031] A base plate 15 is fixedly installed at the end of the outer column 12 away from the rotary arm 2. The lifting drive assembly 13 includes a mounting base 131 fixedly installed on the base plate 15, a lifting cylinder 132 installed on the mounting base 131, and a connecting block 133 installed at the end of the lifting cylinder 132 away from the mounting base 131. The connecting block 133 is fixedly connected to the inner column 11.

[0032] There are two lifting drive components 13, which are arranged in a circular array on the outside of the outer column 12.

[0033] Two first connecting plates 1311 are fixedly installed on the mounting base 131. A first connecting shaft 1312 is provided between the two first connecting plates 1311. The first connecting shaft 1312 is fixedly connected to the first connecting plates 1311 and is rotatably connected to the lifting cylinder 132.

[0034] Two second connecting plates 1331 are fixedly installed on the connecting block 133. A second connecting shaft 1332 is provided between the two second connecting plates 1331. The second connecting shaft 1332 is fixedly connected to the second connecting plates 1331 and is rotatably connected to the lifting cylinder 132.

[0035] The guide assembly 14 includes a guide rod 141 and a guide sleeve 142. The guide rod 141 is fixedly connected to the inner column 11, and the axis of the guide rod 141 is parallel to the axis of the inner column 11. The guide sleeve 142 is fixedly mounted on the outer column 12, and the guide rod 141 and the guide sleeve 142 are slidably connected.

[0036] There are two guide components 14, which are arranged in a circular array outside the inner column 11.

[0037] Two reinforcing ribs 16 are fixedly installed at one end of the outer column 12 near the base plate 15. The two reinforcing ribs 16 are arranged in a circular array on the outside of the outer column 12.

[0038] The implementation principle of the adjustable column height cantilever crane according to this application embodiment is as follows: When the cantilever crane is working, the lifting cylinder 132 drives the inner column 11 to rise, thereby ensuring that the lifting height of the cantilever crane meets the needs of the hoisted items. During the raising process of the inner column 11, two sets of lifting cylinders 132 drive the inner column 11 to rise stably, and two guide columns limit and guide the inner column 11, thereby improving the stability of the inner column 11 raising process. When the bridge double girder crane needs to work, the lifting cylinder 132 drives the inner column 11 to lower, thereby reducing the interference between the cantilever crane and the bridge double girder crane, and thus improving the safety and stability of the hoisting process.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cantilever crane with adjustable column height, characterized in that: The system includes a telescopic column mechanism (1), a rotary arm (2), a rotary drive device (3) mounted on the rotary arm (2), and an electric hoist (4). The telescopic column mechanism (1) includes an inner column (11), an outer column (12), a lifting drive assembly (13), and a guide assembly (14). The outer column (12) has an installation groove (121) inside. One end of the inner column (11) is inserted into the installation groove (121), and the other end is connected to the rotary arm (2). The lifting drive assembly (13) is used to drive the inner column (11) to rise and fall in the installation groove (121). The guide assembly (14) is used to guide the rise and fall of the inner column (11).

2. The adjustable column height cantilever crane according to claim 1, characterized in that: The outer column (12) is provided with a base plate (15) at one end away from the rotary arm (2). The lifting drive assembly (13) includes a mounting seat (131) on the base plate (15), a lifting cylinder (132) on the mounting seat (131), and a connecting block (133) at one end of the lifting cylinder (132) away from the mounting seat (131). The connecting block (133) is connected to the inner column (11).

3. The adjustable column height cantilever crane according to claim 2, characterized in that: The number of the lifting drive components (13) is multiple, and the multiple lifting drive components (13) are arranged in a circular array on the outside of the outer column (12).

4. A cantilever crane with adjustable column height according to claim 3, characterized in that: The mounting base (131) is provided with two first connecting plates (1311), and a first connecting shaft (1312) is provided between the two first connecting plates (1311). The first connecting shaft (1312) is fixedly connected to the first connecting plate (1311), and the first connecting shaft (1312) is rotatably connected to the lifting cylinder (132).

5. A cantilever crane with adjustable column height according to claim 4, characterized in that: The connecting block (133) is provided with two second connecting plates (1331), and a second connecting shaft (1332) is provided between the two second connecting plates (1331). The second connecting shaft (1332) is fixedly connected to the second connecting plate (1331), and the second connecting shaft (1332) is rotatably connected to the lifting cylinder (132).

6. A cantilever crane with adjustable column height according to claim 1, characterized in that: The guide assembly (14) includes a guide rod (141) and a guide sleeve (142). The guide rod (141) is fixedly connected to the inner column (11), and the axis of the guide rod (141) is parallel to the axis of the inner column (11). The guide sleeve (142) is disposed on the outer column (12), and the guide rod (141) and the guide sleeve (142) are slidably connected.

7. A cantilever crane with adjustable column height according to claim 6, characterized in that: The number of the guide components (14) is multiple, and the multiple guide components (14) are arranged in a circular array outside the inner column (11).

8. A cantilever crane with adjustable column height according to claim 2, characterized in that: The outer column (12) is provided with a plurality of reinforcing ribs (16) at one end near the base plate (15), and the plurality of reinforcing ribs (16) are arranged in a circular array on the outside of the outer column (12).

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