Loop chain type electric double-beam crane

Abstract

The utility model provides a loop chain type electric double-beam crane which comprises two parallel girders, end beams are arranged at the tops of the girders in a sliding mode, a main beam is arranged between the two end beams, a main beam trolley is arranged at the bottom of the main beam in a sliding mode, and a loop chain elevator is fixedly arranged at the bottom of the main beam trolley. Buffering anti-jumping limiting mechanisms matched with the end beams are arranged at the two ends of the girder. In the utility model, when the end beam travels to the end part of the girder and collides, and the end beam limiting plate drives the sliding rod to move for a certain distance in the supporting plate, the extension arm drives the swing arm to swing, one end of the swing arm close to the end beam moves downwards, and the lower pressing wheel at the end part of the swing arm is pressed on the top of the end beam, so that wheels in the end beam are prevented from jumping out of a rail at the top of the girder; potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, specifically relating to a chain-type electric double-girder crane. Background Technology

[0002] The electric double-girder chain crane is a heavy-duty lifting device that combines a double-girder bridge structure with an electric chain hoist. It is mainly used for material handling and precision lifting operations in industrial and construction settings. Its core features include high load-bearing capacity provided by the double main girder and precise control and stable operation achieved by the chain drive system.

[0003] In the prior art, Chinese utility model patent document with authorization announcement number CN216141145U discloses a wind turbine nacelle chain crane. When the end beam moves on the main beam and collides with the limiting plate, the wheels may jump off the track under the impact force of the collision, which poses a risk of derailment and certain safety hazards.

[0004] Therefore, it is necessary to design a chain-type electric double-girder crane that can press down on the end beams during a collision to prevent the wheels from jumping off the track and reduce safety hazards in order to solve the current technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a chain-type electric double-girder crane that can press down on the end beam during a collision to prevent the wheels from jumping off the track and reduce safety hazards.

[0006] The technical solution of this utility model is as follows: a chain-type electric double-girder crane, comprising two parallel main beams, an end beam slidably disposed on the top of the main beams, a main beam disposed between the two end beams, a main beam trolley slidably disposed on the bottom of the main beams, a chain hoist fixedly disposed on the bottom of the main beam trolley, and buffer anti-jump limiting mechanisms cooperating with the end beams at both ends of the main beams; the buffer anti-jump limiting mechanism has a support plate fixedly disposed on the top of the main beams, a slide rod slidably disposed vertically on the support plate, a limiting plate fixedly disposed on one end of the slide rod near the end beams, an extension arm at the other end of the slide rod, a swing arm hinged to the top of the support plate, a downward pressure wheel corresponding to the top of the end beams disposed on one end of the swing arm near the end beams, the other end of the swing arm slidably connected to the end of the extension arm, and a spring fitted on the outside of the slide rod between the limiting plate and the support plate.

[0007] Furthermore, the swing arm has a "J" shaped structure, and a slide rail is provided at the upper end of the swing arm away from the lower pressure wheel. A sliding shaft is slidably arranged inside the slide rail, and one end of the sliding shaft is fixedly connected to one side of the extension arm.

[0008] Furthermore, two pressure rollers are symmetrically arranged on both sides of the end of the swing arm near the end beam, and buffer rollers are fitted on the outer side of the pressure rollers.

[0009] Furthermore, the buffer wheel is a rubber wheel fitted on the outside of the lower pressure wheel, and the buffer wheel has channels arranged in a circumferential array.

[0010] Furthermore, a buffer block, which is a rubber buffer block, is fixedly provided on the side of the limiting plate opposite to the slide rod.

[0011] Furthermore, a retaining ring is fixedly provided on the outer side of the slide rod near the extension arm.

[0012] The beneficial effects of this utility model are:

[0013] (1) In this utility model, when the end beam travels to the end of the main beam, the end beam first contacts the limiting plate, the limiting plate plays a limiting role on the end beam, and at the same time the limiting plate will drive the sliding rod to move a distance in the support plate. During the movement, the spring is compressed, and the energy of the impact is absorbed by the deformation of the spring.

[0014] (2) When the limiting plate moves the sliding rod a certain distance in the support plate, the extension arm drives the swing arm to swing. The end of the swing arm that is close to the end beam moves down and presses down on the top of the end beam through the lower pressure wheel at the end of the swing arm, thereby preventing the wheel in the end beam from jumping off the track at the top of the beam and reducing safety hazards. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the electric double-girder chain crane of this utility model.

[0016] Figure 2 This is one of the structural schematic diagrams of the buffer anti-jump limiting mechanism in this utility model.

[0017] Figure 3 This is the second schematic diagram of the buffer anti-jump limiting mechanism in this utility model. Detailed Implementation

[0018] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0019] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figures 1 to 3 As shown, the electric double-girder crane with a chain hoist includes two parallel main beams 1. End beams 2 are slidably mounted on the top of the main beams 1. A main beam 3 is positioned between the two end beams 2. A main beam trolley 4 is slidably mounted on the bottom of the main beam 3. A chain hoist 5 is fixedly mounted on the bottom of the main beam trolley 4. Both ends of the main beams 1 are equipped with buffer anti-jump limiting mechanisms 6 that cooperate with the end beams 2. The buffer anti-jump limiting mechanism 6 has a support plate 61 fixedly mounted on the top of the main beams 1. The bottom end of the support plate 61 is vertically welded and fixed to the top of the main beams 1. A sliding rod 63 is vertically slidably mounted on the support plate 61. A limiting plate 64 is fixedly mounted on one end of the sliding rod 63 near the end beams 2. The other end of the sliding rod 63 has an extension arm 631. A swing arm 62 is hinged to the top of the support plate 61. A downward pressure wheel 6 is mounted on one end of the swing arm 62 near the end beams 2, corresponding to the top of the end beams 2. 6. The other end of the swing arm 62 is slidably connected to the end of the extension arm 631. A spring 69 is fitted on the outside of the slide rod 63 between the limiting plate 64 and the support plate 61. In this embodiment, when the end beam 2 moves to the end of the main beam 1, the end beam 2 first contacts the limiting plate 6. The limiting plate 54 limits the end beam 2. At the same time, the limiting plate 64 will drive the slide rod 63 to move a distance within the support plate 61. During the movement, the spring 69 is compressed, and the deformation of the spring 69 absorbs the impact energy. When the limiting plate 64 drives the slide rod 63 to move a distance within the support plate 61, the extension arm 631 drives the swing arm 62 to swing. The end of the swing arm 62 near the end beam 2 moves down, and the pressure wheel 66 at the end of the swing arm 62 presses down on the top of the end beam 2, thereby preventing the wheel in the end beam 2 from jumping off the track at the top of the main beam 1 and reducing safety hazards.

[0021] In some embodiments, the swing arm 62 has a "J" shaped structure. A slide rail 621 is provided at one end of the upper part of the swing arm 62 away from the lower pressure wheel 66. A slide shaft 632 is slidably provided inside the slide rail 621. One end of the slide shaft 632 is fixedly connected to one side of the extension arm 631. When the slide rod 63 drives the extension arm 631 to move, the extension arm 631 pushes the swing arm 62 to swing, and at the same time, the slide shaft 632 slides inside the slide rail 621.

[0022] In some embodiments, two pressure rollers 66 are symmetrically arranged on both sides of the end of the swing arm 62 near the end beam 2, and a buffer roller 67 is fitted on the outer side of the pressure roller 66; when the buffer roller 67 is pressed down and comes into contact with the top of the end beam 2, it can play a certain buffering role, reduce the impact on the top of the end beam 2, and avoid damage to the end beam 2.

[0023] In some embodiments, the buffer wheel 67 is a rubber wheel fitted on the outside of the pressure wheel 66, and the buffer wheel 67 has a circular array of channels 68; the opening of the channels 68 allows the buffer wheel 67 to deform more flexibly and absorb energy when it comes into contact with the top of the end beam 2.

[0024] In some embodiments, a buffer block 65 is fixedly provided on the side of the limiting plate 64 away from the slide rod 63. The buffer block 65 is a rubber buffer block. When the end beam 2 moves to the end of the main beam 1, the end beam 2 contacts the buffer block 65. The buffer block 65 can play a certain buffering role between the end of the end beam 2 and the limiting plate 64.

[0025] In some embodiments, a retaining ring 633 is fixedly provided on the outer side of one end of the slide rod 63 near the extension arm 631; the retaining ring 633 plays a certain limiting role between the end of the slide rod 63 and the support plate 61, so as to prevent the slide rod 63 from slipping off the support plate 61.

[0026] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0027] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electric double-beam chain hoist, characterized in that: It includes two parallel main beams, with end beams slidably mounted on the top of the main beams, a main beam between the two end beams, a main beam trolley slidably mounted on the bottom of the main beam, a chain hoist fixedly mounted on the bottom of the main beam trolley, and buffer anti-jump limiting mechanisms that cooperate with the end beams at both ends of the main beams. The buffer anti-jump limiting mechanism has a support plate fixedly installed on the top of the main beam. A slide rod is vertically slidably installed on the support plate. A limiting plate is fixedly installed on one end of the slide rod near the end beam. An extension arm is provided at the other end of the slide rod. A swing arm is hinged to the top of the support plate. A downward pressure wheel corresponding to the top of the end beam is provided on one end of the swing arm near the end beam. The other end of the swing arm is slidably connected to the end of the extension arm. A spring is fitted on the outside of the slide rod between the limiting plate and the support plate.

2. Electric double-beam chain hoist according to claim 1, characterized in that The swing arm has a "J" shaped structure. A slide rail is provided at the upper end of the swing arm away from the lower pressure wheel. A sliding shaft is slidably arranged inside the slide rail. One end of the sliding shaft is fixedly connected to one side of the extension arm.

3. Electric double-beam chain hoist according to claim 1, characterized in that: Two pressure rollers are symmetrically arranged on both sides of one end of the swing arm near the end beam, and buffer rollers are fitted on the outer side of the pressure rollers.

4. Electric double-beam chain hoist according to claim 3, characterized in that The buffer wheel is a rubber wheel fitted on the outside of the lower pressure wheel, and the buffer wheel has a circular array of holes.

5. The electric double-beam gantry crane of endless chain type according to claim 1, characterized in that: A buffer block, which is a rubber buffer block, is fixedly provided on the side of the limiting plate opposite to the slide rod.

6. The electric double-beam gantry crane of endless chains according to claim 1, characterised in that: A retaining ring is fixedly installed on the outer side of the slide rod near the extension arm.

Images