A cantilever crane

Abstract

The utility model provides a cantilever crane, comprising a column and a cantilever, wherein one end of the cantilever is rotatably connected to the upper end of the column so that the cantilever rotates circumferentially along the upper end of the column, and the cantilever crane also comprises a base, wherein the upper end of the base is fixedly connected to a lower connecting plate, and the lower connecting plate is in a disc-shaped structure; an end of the column away from the cantilever is fixedly connected to an upper connecting plate, and the upper connecting plate is in a disc-shaped structure, and one end of the upper connecting plate is rotatably connected to the lower connecting plate, and the upper connecting plate and the lower connecting plate are detachably connected away from the end that is rotatably connected to each other. The upper end of the base is fixedly connected to a lower connecting plate, and the upper connecting plate at one end of the column is rotatably connected to each other, so that the lower connecting plate can rotate relative to the lower connecting plate when the lower connecting plate is not fixedly connected to each other, so that the base can be fixed first and then the column can be rotated from horizontal to vertical, so as to facilitate the installation of the cantilever crane.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting machinery and equipment, in particular to a cantilever crane. Background Art

[0002] The cantilever crane is a light lifting equipment, which is equipped with a highly reliable chain electric hoist, which is especially suitable for short-distance, frequently used, and intensive lifting operations. It has the characteristics of high efficiency, energy saving, trouble-free, small footprint, easy operation and maintenance. The cantilever crane has a light working intensity. The crane consists of a column, a slewing arm slewing drive device and an electric hoist. The lower end of the column is fixed to the concrete foundation by anchor bolts, and the cantilever is driven by a cycloidal pinwheel reduction device to rotate. The electric hoist runs straight left and right on the cantilever I-beam and lifts heavy objects. The cantilever crane has the advantages of simple structure, easy operation, and small footprint. It can be flexibly used in workshops, warehouses, docks and other places to improve work efficiency and reduce labor intensity.

[0003] There are two commonly used installation methods for cantilever cranes. One is that the base is fixedly installed on the cement floor, and the cantilever crane is fixedly installed by high-strength bolts to ensure that the cantilever crane can lift objects safely and reliably. However, the columns of the current fixed cantilever cranes are all fixed integrated structures, so the cantilever crane needs to be assisted by other overweight equipment during the installation process to complete the installation. Therefore, the installation or disassembly of the cantilever crane is relatively troublesome. Therefore, it is necessary to set up a cantilever crane that can be easily installed or disassembled to adapt to quick and convenient installation, thereby reducing the installation labor intensity of the cantilever crane. Utility Model Content

[0004] In order to solve the problem of inconvenient installation of cantilever crane with integrated column structure in the prior art.

[0005] The technical solution of this utility model:

[0006] A cantilever crane is provided, comprising a column and a cantilever, wherein one end of the cantilever is rotatably connected to the upper end of the column so that the cantilever rotates circumferentially along the upper end of the column, and the cantilever crane also comprises a base, the upper end of the base is fixedly connected to a lower connecting plate, and the lower connecting plate is in a disc-shaped structure; an end of the column away from the cantilever is fixedly connected to an upper connecting plate, and the upper connecting plate is in a disc-shaped structure, one end of the upper connecting plate is rotatably connected to the lower connecting plate, and the upper connecting plate and the lower connecting plate are detachably connected away from one end of the mutually rotatably connected connection.

[0007] Preferably, the utility model is a cantilever crane, wherein one side of the upper connecting plate is a disc-shaped structure and one end rotatably connected to the lower connecting plate protrudes toward the outside of the disc along the disc body, and one side of the lower connecting plate is a disc-shaped structure and one end rotatably connected to the upper connecting plate protrudes toward the outside of the disc along the disc body.

[0008] Preferably, the utility model provides a cantilever crane, wherein the upper connecting plate is provided with a plurality of through holes in an annular direction on the disc-shaped structure, and the lower connecting plate is provided with a plurality of through holes in the disc-shaped structure that match the plurality of through holes in an annular direction on the disc-shaped structure of the upper connecting plate.

[0009] Preferably, in the utility model, a cantilever crane is provided, wherein the upper connecting plate and the lower connecting plate are detachably connected via bolts at one end away from the mutually rotatable connection.

[0010] Preferably, the utility model provides a cantilever crane, wherein the lower end of the base is detachably connected to a plurality of support rods, and the support rods are in the form of long rods.

[0011] Preferably, in the cantilever crane of the utility model, the support rods are evenly distributed circumferentially at the lower end of the base.

[0012] Preferably, in the cantilever crane of the utility model, the support rod and the base are detachably connected by bolts.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a cantilever crane which comprises a column, a cantilever and a base. The upper end of the base is fixedly connected with a lower connecting plate. The upper connecting plate cooperates with one end of the column and is rotatably connected to each other, so that the lower connecting plates can rotate relatively when the lower connecting plates are not fixedly connected to each other. Therefore, the base can be fixed first and then the column can be rotated from horizontal to vertical, so as to facilitate the installation of the cantilever crane.

[0015] The utility model discloses a cantilever crane comprising a column, a cantilever and a base, which has a simple structure, low production cost and is easy to carry and install on site.

[0016] One side of the upper connecting plate is a disc-shaped structure, and the other side of the lower connecting plate is a disc-shaped structure. The multiple through holes annularly opened on the disc-shaped structure are matched with each other, which can facilitate the connection and disassembly of the upper connecting plate and the lower connecting plate, and at the same time can better ensure its structural strength.

[0017] A plurality of support rods are detachably connected to the lower end of the base. The support rods are in the form of long rods, so that the cantilever crane can be directly placed on the ground for use. At the same time, the structure is a detachable structure, which can facilitate the rapid switching of various application occasions of the cantilever crane, so that the cantilever crane can be conveniently used in different scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a cantilever crane during installation of the utility model;

[0019] Figure 2This is a schematic diagram of the structure of a cantilever crane during installation of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a cantilever crane of the utility model when in use;

[0021] Names and serial numbers in the figure: 1. column; 11. upper connecting plate; 2. cantilever; 3. base; 31. lower connecting plate; 4. support rod. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings.

[0023] In some embodiments, Figure 1 As shown, the utility model provides a cantilever crane, including a column and a cantilever, wherein one end of the cantilever is rotatably connected to the upper end of the column so that the cantilever rotates circumferentially along the upper end of the column. An electric or manual hoist can be installed on the cantilever for lifting objects, and the hoist can move along the length direction of the cantilever, so that the entire cantilever crane has a larger operating range. A rotary drive is also installed between the cantilever and the column, which can be driven by an electric motor so that the cantilever can rotate relative to the column, which further ensures a better operating area of ​​the cantilever crane, thereby meeting the current lifting needs.

[0024] In some embodiments, to facilitate the installation and use of the cantilever crane, Figures 1 to 3 As shown, the cantilever crane also includes a base. A lower connecting plate is fixedly connected to the upper end of the base, wherein the middle part of the base can be made of a round steel pipe, and the lower connecting plate is a disc-shaped structure. The lower connecting plate of the disc-shaped structure can be made of a laser-cut steel plate, thereby reducing the production and manufacturing cost of the cantilever crane. An upper connecting plate is fixedly connected to the end of the column away from the cantilever, that is, the upper connecting plate is connected to the lower end of the cantilever crane column as shown in the figure, wherein the column body can be made of a round steel pipe as shown in the figure. Since round steel pipes are currently commonly used standard profiles, they are relatively easy to obtain and their cost is relatively low. The upper connecting plate is a disc-shaped structure, so that the upper connecting plate is fixedly connected to the column. One end of the upper connecting plate is rotatably connected to the lower connecting plate, and the upper connecting plate and the lower connecting plate are detachably connected away from the end that is rotatably connected to each other. That is, Figure 1 , Figure 2 As shown, one end of the upper connecting plate and one end of the lower connecting plate are connected in a hinged manner, so that the upper connecting plate can rotate relative to the lower connecting plate. Figure 3 As shown, the upper connecting plate and the lower connecting plate can be fixedly connected to prevent the upper connecting plate from rotating relative to the lower connecting plate, thereby fixing the column and the base.

[0025] When the utility model cantilever crane needs to be used and installed, Figure 2 As shown, first disassemble the side where the upper connecting plate and the lower connecting plate of the cantilever crane are detachably connected, and at the same time move the cantilever crane to the position where the cantilever crane needs to be installed, so that the position between the column and the base is as shown in FIG. Figure 2 At this point, the lower end of the base can be fixed first. Specifically, bolts can be used to fix the lower end of the base to the cement floor. At this time, it is necessary to firmly fix the base to ensure that the cantilever crane can operate safely and reliably in the future. After the lower end of the base is fixed, the column can be rotated as shown in the figure. Figure 2 The status shown is as follows Figure 3 The state transition shown in the figure shows that at this time, since the base has been fixed and installed, only a small lifting force is needed to complete the erection of the column, that is, at this time it can be completed by multiple collaborations, so the installation of the cantilever crane can save manpower and material resources relatively well. After the erection of the column is completed, the lower connecting plate and the upper connecting plate can be locked and connected in time to ensure that the cantilever crane can operate stably for a long time in the later stage. So far, the installation process of the cantilever crane is completed. Similarly, when the cantilever crane needs to be disassembled, the cantilever crane can be quickly disassembled by following the reverse operation during installation.

[0026] In some embodiments, the utility model provides a cantilever crane, such as Figure 1 to Figure 2 As shown, one side of the upper connecting plate is a disc-shaped structure and one end of the upper connecting plate rotatably connected to the lower connecting plate protrudes toward the outside of the disc along the disc body, and one side of the lower connecting plate is a disc-shaped structure and one end of the upper connecting plate rotatably connected to the upper connecting plate protrudes toward the outside of the disc along the disc body. By providing a protruding structure on the outside of the disc for installing the connecting hinge, that is, a fixed position for installing the hinge required for their mutual rotational connection is provided on the upper connecting plate and the lower connecting plate, and at the same time, this position does not affect the detachable connection between the upper connecting plate and the lower connecting plate, that is, while the rotational connection strength between the upper connecting plate and the lower connecting plate can be better guaranteed, the connection strength between the column and the base can also be better guaranteed, so as to ensure that the cantilever crane can operate reliably and stably after installation.

[0027] In some embodiments, the utility model provides a cantilever crane, wherein the upper connecting plate is provided with a plurality of through holes in an annular direction on a disc-shaped structure, and the lower connecting plate is provided with a plurality of through holes in an annular direction on a disc-shaped structure that match the plurality of through holes in an annular direction on the disc-shaped structure of the upper connecting plate. That is, the upper connecting plate and the lower connecting plate can be fixed by a fastener through the through holes, and after the prefabricated holes are provided, they can be installed better and faster on site of the cantilever crane. The ends of the upper connecting plate and the lower connecting plate away from the mutually rotatable connection are detachably connected by bolts, that is, the upper connecting plate and the lower connecting plate can be quickly connected and installed by the studs, and quick disassembly can also be achieved when disassembly is required.

[0028] In some embodiments, Figures 1 to 3 As shown, the lower end of the base is detachably connected with several support rods, and the support rods are in the shape of long rods. As shown in the figure, the support rods are evenly distributed in the circumferential direction of the lower end of the base. That is, a plurality of support rods are detachably connected in the circumferential direction of the lower end of the base, wherein the number of support rods is mainly to be able to surround the base, that is, at least three or more, so that when the base is not well fixedly connected to the ground, the support rods can also well achieve the supporting effect of the cantilever crane, so that when the base of the cantilever crane is not fixedly connected to the ground or the fixed connection strength between the base and the ground is insufficient, the support effect of the support rods can ensure the normal operation of the cantilever crane. In order to facilitate the disassembly and connection between the upper connecting plate and the lower connecting plate, the support rods and the base are detachably connected by bolts, that is, the quick connection or disassembly between the upper connecting plate and the lower connecting plate can be achieved by bolts, and the stable connection between the upper connecting plate and the lower connecting plate can also be guaranteed.

[0029] This article uses specific embodiments to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above are only preferred implementation methods of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the utility model, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A cantilever crane, comprising a column and a cantilever, wherein one end of the cantilever is rotatably connected to the upper end of the column so that the cantilever rotates circumferentially along the upper end of the column, characterized in that: The cantilever crane also includes a base, the upper end of the base is fixedly connected to a lower connecting plate, and the lower connecting plate is a plate-shaped structure; the end of the column away from the cantilever is fixedly connected to an upper connecting plate, and the upper connecting plate is a plate-shaped structure, one end of the upper connecting plate is rotatably connected to the lower connecting plate, and the upper connecting plate and the lower connecting plate are detachably connected away from the end where they are rotatably connected to each other.

2. A cantilever crane according to claim 1, characterized in that: One side of the upper connecting disk is in a disc-shaped structure and one end rotatably connected to the lower connecting disk protrudes toward the outside of the disk along the disk body. One side of the lower connecting disk is in a disc-shaped structure and one end rotatably connected to the upper connecting disk protrudes toward the outside of the disk along the disk body.

3. A cantilever crane according to claim 2, characterized in that: The upper connecting plate is provided with a plurality of through holes in an annular direction on the disc-shaped structure, and the lower connecting plate is provided with a plurality of through holes in an annular direction on the disc-shaped structure that match the plurality of through holes in an annular direction on the disc-shaped structure of the upper connecting plate.

4. A cantilever crane according to claim 3, characterized in that: The upper connecting plate and the lower connecting plate are detachably connected via bolts at one end away from the mutually rotatable connection.

5. The cantilever crane according to claim 1, characterized in that: The lower end of the base is detachably connected with a plurality of support rods, and the support rods are in the form of long rods.

6. A cantilever crane according to claim 5, characterized in that: The support rods are evenly distributed circumferentially at the lower end of the base.

7. A cantilever crane according to claim 6, characterized in that: The support rod is detachably connected to the base via bolts.

Images