Crown block with electric hoist anti-falling function

Abstract

The utility model relates to the technical field of crown blocks, in particular to a crown block with an electric hoist anti-falling function, which comprises a main beam connected with an electric hoist through a traveling mechanism. A rail is arranged on the lower portion of the main beam, the top of the electric hoist is fixedly connected with C-shaped connecting pieces, and the connecting pieces are arranged on the two sides of the rail in a sleeving mode; the connecting piece is fixedly connected with a microswitch, the microswitch is arranged below the track, and the microswitch is electrically connected with an alarm device; when the up-and-down movement amplitude of the microswitch exceeds a certain limit, the microswitch is closed; according to the utility model, when the movement range exceeds a certain limit, the microswitch is closed, so that the microswitch controls the alarm device to give an alarm; the electric hoist can be overhauled before falling, and falling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead cranes, in particular to an overhead crane with an electric hoist anti-falling function. Background Art

[0002] The overhead crane includes a main beam, on which an electric hoist is installed through a traveling mechanism. The electric hoist moves on the main beam driven by the traveling mechanism. Since the electric hoist is only connected to the main beam through the traveling mechanism, the connection strength is low and there is a risk of the electric hoist falling.

[0003] The patent with authorization announcement number CN218754654U discloses an anti-fall device for an electric hoist for an overhead crane, which is hooked on both sides of the traveling track of the overhead crane electric hoist through a C-shaped groove to play an anti-fall role; however, its disadvantages are that it cannot monitor the connection status of the electric hoist and cannot issue an early warning before the electric hoist falls. Utility Model Content

[0004] The main purpose of the utility model is to provide an overhead crane with an electric hoist anti-falling function to solve the problem that the connection status of the electric hoist cannot be monitored in the above-mentioned prior art and an early warning cannot be issued before the electric hoist falls.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an overhead crane with an electric hoist anti-fall function, comprising a main beam, which is connected to the electric hoist through a walking mechanism; the lower part of the main beam is a track, and the top of the electric hoist is fixedly connected with a C-shaped connecting piece, which is sleeved on both sides of the track; the connecting piece is fixedly connected with a micro switch, which is arranged below the track, and the micro switch is electrically connected to an alarm device; when the up and down movement amplitude of the micro switch exceeds a certain limit, the micro switch will be closed.

[0006] Furthermore, the alarm device includes an alarm light and a voice speaker.

[0007] Furthermore, the walking mechanism includes a bracket fixedly connected to the electric hoist, the bracket is rotatably connected to gear 1, and the gear is coaxially fixedly connected to the walking wheel; gear 1 is transmission-connected to gear 2, and gear 2 is fixedly connected to the output shaft of the motor.

[0008] Furthermore, the micro switch includes a switch body, on which a movable handle and a button are arranged, and the button is located below the movable handle.

[0009] The utility model is provided with a micro switch and an alarm device, wherein the micro switch is indirectly connected to the electric hoist through a connecting piece; when the electric hoist moves up and down with a large amplitude, it indicates that the electric hoist is shaking severely and there is a risk of falling; and when the amplitude of the movement exceeds a certain limit, the micro switch will be closed, so that the micro switch controls the alarm device to alarm; the electric hoist can be inspected and repaired before it falls, thereby preventing it from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0011] Figure 1 It is a structural schematic diagram of an overhead crane with an electric hoist anti-falling function in an embodiment;

[0012] Figure 2 This is a schematic diagram of the structure of the micro switch in the embodiment;

[0013] Figure 3 It is a structural schematic diagram of the walking mechanism in the embodiment;

[0014] Figure 4 A schematic diagram of the structure of a micro switch in an embodiment;

[0015] In the figure: 1. main beam; 101. track; 2. walking mechanism; 201. bracket; 202. gear 1; 203. walking wheel; 204. gear 2; 205. motor; 3. electric hoist; 4. connector; 5. micro switch; 501. switch body; 502. button; 503. movable handle; 6. voice speaker; 7. alarm light. DETAILED DESCRIPTION

[0016] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] like Figures 1 to 4 As shown, according to an embodiment of the utility model, a crane with an electric hoist anti-falling function is provided, comprising a main beam 1, the main beam 1 is connected to an electric hoist 3 through a walking mechanism 2; the lower part of the main beam 1 is a track 101, the top of the electric hoist 3 is fixedly connected with a C-shaped connector 4, and the connector 4 is sleeved on both sides of the track 101; the connector 4 is fixedly connected with a micro switch 5, the micro switch 5 is arranged below the track 101, and the micro switch 5 is electrically connected to an alarm device; when the up and down movement amplitude of the micro switch 5 exceeds a certain limit, the micro switch 5 will be closed.

[0018] like Figure 2As shown, the alarm device includes an alarm light 7 and a voice speaker 6.

[0019] like Figure 1 and 3 As shown, the walking mechanism 2 includes a bracket 201 fixedly connected to the electric hoist 3, the bracket 201 is rotatably connected to a gear 1 202, the gear 1 202 is coaxially fixedly connected to a walking wheel 203; the walking wheel 203 is rollingly connected to the track 101; the gear 1 202 is transmission-connected to a gear 2 204, the gear 204 is coaxially fixedly connected to the output shaft of the motor 205.

[0020] like Figure 4 As shown, the micro switch 5 includes a switch body 501 , on which a movable handle 503 and a button 502 are provided, and the button 502 is located below the movable handle 503 .

[0021] The working principle of the above embodiment is:

[0022] When the electric hoist 3 moves up and down with a large amplitude, it means that the electric hoist 3 is shaking severely and there is a risk of falling; when the amplitude exceeds a certain limit, the movable handle 503 will be squeezed by the track 101, which will close the micro switch 5, and the micro switch 5 will control the alarm device to sound an alarm; this can remind workers and enable them to inspect the electric hoist 3 before it falls to avoid it falling.

[0023] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An overhead crane with an electric hoist anti-falling function, comprising a main beam (1), wherein the main beam (1) is connected to an electric hoist (3) via a traveling mechanism (2); characterized in that: The lower part of the main beam (1) is a track (101); the top of the electric hoist (3) is fixedly connected to a C-shaped connecting piece (4), and the connecting piece (4) is sleeved on both sides of the track (101); the connecting piece (4) is fixedly connected to a micro switch (5), and the micro switch (5) is arranged below the track (101), and the micro switch (5) is electrically connected to an alarm device; when the upward and downward movement amplitude of the micro switch (5) exceeds a certain limit, the micro switch (5) is closed.

2. The overhead crane with electric hoist anti-falling function as claimed in claim 1, characterized in that: The alarm device comprises an alarm light (7) and a voice speaker (6).

3. The overhead travelling crane with electric hoist anti-falling function as claimed in claim 1, characterized in that: The walking mechanism (2) comprises a bracket (201) fixedly connected to the electric hoist (3); the bracket (201) is rotatably connected to a gear 1 (202); the gear 1 (202) is coaxially fixedly connected to a walking wheel (203); the gear 1 (202) is drivingly connected to a gear 2 (204); the gear 2 (204) is fixedly connected to an output shaft of a motor (205).

4. The overhead travelling crane with electric hoist anti-falling function as claimed in claim 1, characterized in that: The micro switch (5) comprises a switch body (501), and a movable handle (503) and a button (502) are provided on the switch body (501), and the button (502) is located below the movable handle (503).

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