LD type electric single-beam crane

Abstract

The utility model relates to the technical field of cranes, and particularly discloses an LD type electric single-beam crane which comprises a main beam, end beams and electric hoists, the electric hoists are installed on the main beam in a sliding mode, the end beams are installed on the left side and the right side of the main beam, the main beam is fixedly connected with the end beams through bolts, and the end beams are fixedly connected with the main beam through bolts. A driving device and a wheel device are installed on the end beam, the wheel device is in transmission connection with the electric hoist and the driving device, end beam buffers are installed at the front end and the rear end of the end beam, I-shaped steel is arranged at the bottom of the end beam buffers, and U-shaped channel steel is arranged on the main beam. And the upper end of the I-shaped steel is fixedly connected with the bottom of the end beam buffer. According to the utility model, the U-shaped channel steel is arranged on the main beam to be matched and connected with the I-shaped steel on the end beam, and the end beam buffer is arranged on the end beam to realize buffering, so that the stress stability of the main beam is enhanced, the structural strength of the main beam is improved, and the service life of the crane is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to an LD type electric single-girder crane. Background Technology

[0002] A single-girder crane typically refers to a single-girder bridge crane. The main beam of a single-girder crane bridge is often made of I-beams or a combination of steel profiles and steel plates. The lifting trolley is usually a manual hoist, an electric hoist, or an assembly using a hoist as a lifting mechanism component.

[0003] A search revealed that Chinese utility model patent CN202322173923.4 discloses a single-girder bridge crane, comprising two support columns and a crossbeam at the top of the two support columns; the crossbeam is slidably connected to a sliding seat, and the support columns are equipped with a drive mechanism; an electric hoist is installed at the bottom of the sliding seat, the electric hoist has a lifting steel cable, a buffer mechanism is installed at the bottom of the lifting steel cable, and a hanging mechanism is fixedly installed at the bottom of the buffer mechanism; two support frames are symmetrically arranged at the bottom of the sliding seat, and a cleaning component is provided on the support frame, the cleaning component including a second motor and a cleaning brush; a second motor is fixedly installed at the lower end of the support frame, and a cleaning brush is installed on the output shaft of the second motor, the bristles of the cleaning brush contacting the outer surface of the lifting steel cable; the dust adhering to the outer surface of the lifting steel cable is cleaned and swept off by the rotation of the cleaning brush, achieving a good cleaning effect, avoiding excessive dust accumulation inside the electric hoist, reducing the likelihood of electric hoist failure, and improving the service life of the electric hoist.

[0004] For example, Chinese utility model patent application CN202320183486.1 discloses an electric single-girder crane, including a single-girder crane body. The single-girder crane body includes a lifting beam body, an electric hoist body, and two moving end beam bodies. An adjustable auxiliary installation mechanism is provided on the lifting beam body. The adjustable auxiliary installation mechanism includes two telescopic beams and two feed traction slides. Telescopic grooves are respectively opened on the left and right sides of the lifting beam body, and the two telescopic beams are movably inserted into the two telescopic grooves. The two moving end beam bodies are respectively located at the ends of the two telescopic beams that are far apart from each other. Feed slides are respectively opened on the top surfaces of the left and right ends of the lifting beam body, and the bottom ends of the two feed slides are respectively connected to the two telescopic grooves. This utility model, through the setting of the adjustable auxiliary installation mechanism, facilitates the expansion and adjustment of the span of the lifting beam body, and makes it easier to adapt and adjust the installation of the single-girder crane body on the metal support rail.

[0005] While the existing cranes can meet basic usage requirements, the direct stress point for lifting heavy objects is on the main beam of the single-girder crane. This makes the main beam of the single-girder crane prone to deformation and failure, which in turn places higher demands on the structural strength of the main beam and affects the service life of the crane. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an LD type electric single-girder crane that addresses the above-mentioned defects of the prior art by setting U-shaped channel steel on the main beam to connect with the I-beam on the end beam, and installing end beam buffers on the end beams to achieve buffering, thereby enhancing the stress stability of the main beam, improving the structural strength of the main beam, and extending the service life of the crane.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0008] An LD-type electric single-girder crane includes a main beam, end beams, and an electric hoist. The electric hoist is slidably mounted on the main beam, and the end beams are mounted on the left and right sides of the main beam. The main beam is fixedly connected to the end beams by bolts. A drive device and a wheel device are mounted on the end beams. The wheel device is connected to the electric hoist and the drive device respectively. End beam buffers are mounted at both ends of the end beams. An I-beam is provided at the bottom of the end beam buffer. A U-shaped channel steel is provided on the main beam, and the upper end of the I-beam is fixedly connected to the bottom of the end beam buffer.

[0009] Preferably, the end beam includes a first end beam and a second end beam, which are symmetrically arranged at the left and right ends of the main beam.

[0010] Preferably, the wheel assembly includes a driving wheel and a driven wheel, which are symmetrically mounted on the inner bottom of the end beam. The driving wheel is connected to the driving device and the driven wheel respectively.

[0011] Preferably, a plurality of buffer supports are installed on the main beam, and the main beam buffers are installed on the buffer supports.

[0012] Preferably, a steel pipe is installed at the bottom of the U-shaped channel steel.

[0013] Preferably, bolts are installed at the ends of the main beam, and nuts that are compatible with the bolts are installed on the inner side of the end beam.

[0014] By adopting the above technical solution, the LD-type electric single-girder crane provided by this utility model has the following beneficial effects: the electric hoist in the LD-type electric single-girder crane is slidably installed on the main beam, and the end beams are installed on the left and right sides of the main beam. The main beam is fixedly connected to the end beams by bolts. The end beams are equipped with a drive device and a wheel device, which are respectively connected to the electric hoist and the drive device. End beam buffers are installed at the front and rear ends of the end beams. The bottom of the end beam buffer is provided with an I-beam, and the main beam is provided with a U-shaped channel steel. The upper end of the I-beam is fixedly connected to the bottom of the end beam buffer. By providing a U-shaped channel steel on the main beam to cooperate with the I-beam on the end beam, the pressure on the main beam can be distributed and transferred to the end beams. The installation of end beam buffers on the end beams achieves buffering, thereby strengthening the stress stability of the main beam, improving the structural strength of the main beam, and extending the service life of the crane. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This is a side view of the structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the main beam structure in this utility model;

[0019] Figure 5 This is a top view of the main beam structure in this utility model;

[0020] Figure 6 This is a side view of the main beam structure in this utility model;

[0021] Figure 7 This is a schematic diagram of the main structure of the middle beam of this utility model;

[0022] Figure 8 This is a top view of the middle beam of this utility model.

[0023] In the diagram, 1-main beam, 2-end beam, 3-electric hoist, 4-drive device, 5-end beam buffer, 6-I-beam, 7-U-channel steel, 8-first end beam, 9-second end beam, 10-drive wheel, 11-passive wheel, 12-buffer bracket, 13-main beam buffer, 14-steel pipe, 15-bolt, 16-nut. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] like Figure 1-8 As shown, the LD type electric single-girder crane includes a main beam 1, end beams 2, and an electric hoist 3. The electric hoist 3 is slidably mounted on the main beam 1. The end beams 2 are mounted on the left and right sides of the main beam 1. The main beam 1 is fixedly connected to the end beams 2 by bolts. A drive device 4 and a wheel device are mounted on the end beams 2. The wheel device is connected to the electric hoist 3 and the drive device 4 respectively. End beam buffers 5 are installed at both ends of the end beams 2. An I-beam 6 is provided at the bottom of the end beam buffer 5. A U-shaped channel steel 7 is provided on the main beam 1. The upper end of the I-beam 6 is fixedly connected to the bottom of the end beam buffer. It can be understood that the electric hoist 3 can be a general-purpose electric hoist, etc., and the drive device 4 can be an electric motor, etc.

[0028] Specifically, the end beam 2 includes a first end beam 8 and a second end beam 9, which are symmetrically arranged at the left and right ends of the main beam 1. The wheel device includes a driving wheel 10 and a driven wheel 11, which are symmetrically installed at the bottom inner side of the end beam 2. The driving wheel 10 is connected to the drive device 4 and the driven wheel 11 respectively. Several buffer brackets 12 are installed on the main beam 1, and main beam buffers 13 are installed on the buffer brackets 12 to buffer the impact force of the electric hoist 3. A steel pipe 14 is installed at the bottom of the U-shaped channel steel 7, a bolt 15 is installed at the end of the main beam 1, and a nut 16 that matches the bolt 15 is installed on the inner side of the end beam 2.

[0029] Understandably, this utility model has a reasonable design and unique structure. By setting U-shaped channel steel 7 on the main beam 1 to connect with I-beam 6 on the end beam 2, the pressure on the main beam 1 can be distributed and transferred to the end beam 2. Furthermore, the end beam buffer 5 is installed on the end beam 2 to achieve buffering, thereby enhancing the stress stability of the main beam 1, improving the structural strength of the main beam 1, and extending the service life of the crane.

[0030] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. An LD-type electric single-girder crane, comprising a main beam, end beams, and an electric hoist, wherein the electric hoist is slidably mounted on the main beam, the end beams are mounted on the left and right sides of the main beam, the main beam is fixedly connected to the end beams by bolts, and a drive device and a wheel device are mounted on the end beams, wherein the wheel device is respectively connected to the electric hoist and the drive device for transmission, characterized in that: The end beam buffer is provided with an I-shaped steel at the bottom, the main beam is provided with a U-shaped channel steel, and the upper end of the I-shaped steel is fixedly connected with the bottom of the end beam buffer.

2. An electric single-beam crane of the LD type according to claim 1, characterised in that: The end beam comprises a first end beam and a second end beam, which are symmetrically arranged at the left and right ends of the main beam.

3. The LD-type electric single-beam crane according to claim 1, characterized in that: The wheel device comprises a driving wheel and a driven wheel, which are symmetrically arranged at the bottom of the end beam.

4. The LD-type electric single-beam crane according to claim 1, characterized in that: The main beam is provided with a plurality of buffer supports, and the buffer supports are provided with main beam buffers.

5. The LD-type electric single-beam crane according to claim 1, characterized in that: The bottom of the U-shaped channel steel is provided with a steel pipe.

6. The LD-type electric single-beam crane according to claim 1, characterized in that: The end of the main beam is provided with a bolt, and the inner side of the end beam is provided with a nut matched with the bolt.

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