Crane with induction type safe operation function

Abstract

The utility model discloses a crane with induction type safe operation, which comprises a crane body and a lifting hook rack, a lifting hook is arranged at the bottom of the lifting hook rack, two protective plates are respectively arranged on the front side and the rear side of the lifting hook rack, the lifting hook comprises a connecting part and a hook part which are integrally formed, a sliding rail strip is arranged on the surface of the connecting part, and a sliding rail is arranged on the sliding rail strip. The sliding rail strip is sleeved with a sliding plate, a stop lever is rotationally arranged at the bottom of the other end of the sliding plate through a hinge seat, a limiting groove is formed in the surface of the lifting hook, an induction piece is arranged at the bottom of the stop lever, a base is arranged between the lifting hook rack and the protection plate, and an electric push rod is connected to the bottom face of the base. The output end of the electric push rod is vertically downward and connected with a connecting rod, a connecting plate is arranged at the bottom end of the connecting rod, and the rear side surface of the connecting plate is fixedly connected with the front side surface of the sliding plate. Through the limiting and clamping effects of the stop lever and the limiting groove, the anti-unhooking device is high in anti-unhooking stability and safety, the whole operation process is simple, convenient, time-saving and labor-saving, and the anti-unhooking device is worthy of application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a crane with inductive safe operation. Background Art

[0002] A crane refers to a multi-action lifting machinery that vertically lifts and horizontally moves heavy objects within a certain range. It is also called an overhead crane, overhead crane, or crane. Some lifting equipment has the working characteristic of intermittent movement, that is, the corresponding mechanisms of material picking, transportation, unloading and other actions work alternately in one working cycle. The development and use of cranes in the market are becoming more and more extensive.

[0003] The crane hook is one of the most important tools in the crane, which is used to lift heavy objects. When the crane is lifting, the heavy object is hooked on the crane hook and the crane is lifted and lowered to move the heavy object to the designated position. The existing crane hooks are prone to unhooking during use, which is very dangerous. Most of them require manual fixation, which is cumbersome and dangerous to operate. Therefore, we designed a crane with inductive safety operation to solve the above technical problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a crane with inductive safe operation to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A crane with inductive safety operation includes a crane body and a hook frame, a pulley block is provided inside the hook frame, a lifting rope is provided inside the pulley block, the other end of the lifting rope is connected to the crane body, a hook is fixedly provided at the bottom of the hook frame, two protective plates are fixedly connected to the front and rear surfaces of the hook frame through a plurality of connecting columns, four reinforcing blocks are fixedly connected between the two protective plates, the hook includes an integrally formed connecting portion and a hook portion, a slide rail is provided on the right side surface of the connecting portion in the vertical direction, and a sliding plate is provided on the outer sliding sleeve of the slide rail to match it. The bottom of the other end of the slide is provided with a barrier rod which is rotated through a hinge seat, and a return torsion spring is provided in the hinge seat. A limit block is provided at the bottom of the hinge seat and on the right side of the barrier rod. The surface of the hook is provided with a limit groove for the bottom end of the barrier rod to be embedded, and the bottom of the barrier rod is provided with an induction plate. A base is fixed between the front surface of the hook frame and the rear surface of the protective plate adjacent to it, and an electric push rod is fixedly connected to the bottom surface of the base. The output end of the electric push rod is vertically downward and connected to a connecting rod, and a connecting plate is fixed to the bottom end of the connecting rod, and the rear surface of the connecting plate is fixedly connected to the front surface of the slide.

[0007] As a preferred solution of the present invention: when the blocking rod abuts against the limiting block, the blocking rod is in a vertical state.

[0008] As a further preferred solution of the present invention: the four reinforcement blocks are distributed at the four corners of the inner surface of the protective plate.

[0009] As a further preferred solution of the present invention: the connecting portion is fixedly arranged at the bottom center of the hook frame.

[0010] As a further preferred solution of the present invention: the cross section of the slide rail in the horizontal direction is "T"-shaped.

[0011] The beneficial effects of the utility model are:

[0012] 1. In this device, due to the setting of the reset torsion spring and the limit block, the barrier rod always remains in a vertical state without the action of external force. When in use, the electric push rod is started, and the output end of the electric push rod can drive the connecting plate to move up and down through the connecting rod, and then drive the slide plate to move up and down together with the barrier rod, and due to the cooperative connection between the slide plate and the slide rail, the above-mentioned up and down movement process has good stability. When the electric push rod is retracted to the shortest, the electric push rod stops running. At this time, the barrier rod is separated from the limit slot and the distance is the largest, which is convenient for hooking operation; and when the barrier rod is embedded in the limit slot and when the sensor plate contacts the inner bottom wall of the limit slot, the electric push rod stops running. At this time, the opening of the hook is closed to prevent unhooking, and through the limiting clamping action of the barrier rod and the limit slot, the stability is high and the safety is high. The whole operation process is simple and convenient, saving time and effort, and is worthy of popularization and use.

[0013] 2. This device uses a reset torsion spring and a limit block. When the stop bar just begins to leave the limit slot, the hook operation can be performed. There is no need to wait until the stop bar and the limit slot are completely separated to the maximum distance. Because the stop bar can be rotated inward to open the opening of the hook, the operation is flexible and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the local structure of the utility model;

[0017] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 4 It is a three-dimensional diagram of the local structure of the utility model.

[0019] Among them: 1-crane body, 2-lifting rope, 3-hook frame, 4-protective plate, 5-hook, 6-connecting column, 7-reinforcement block, 8-connecting part, 9-hook, 10-base, 11-electric push rod, 12-slide rail, 13-slide plate, 14-connecting plate, 15-block rod, 16-sensor plate, 17-limiting groove, 18-limiting block, 19-hinge seat, 20-connecting rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] See also Figure 1-4In the embodiment of the present invention, a crane with inductive safety operation includes a crane body 1 and a hook frame 3. A pulley block is provided inside the hook frame 3. A lifting rope 2 is provided inside the pulley block. The other end of the lifting rope 2 is connected to the crane body 1. A hook 5 is fixedly provided at the bottom of the hook frame 3. Two protective plates 4 are fixedly connected to the front and rear surfaces of the hook frame 3 through multiple connecting columns 6. Four reinforcing blocks 7 are fixedly connected between the two protective plates 4. The four reinforcing blocks 7 are located on the four inner surfaces of the protective plates 4. The hook 5 includes an integrally formed connecting portion 8 and a hook portion 9. The connecting portion 8 is fixedly arranged at the bottom center of the hook frame 3. The right surface of the connecting portion 8 is provided with a slide bar 12 in the vertical direction. The cross section of the slide bar 12 in the horizontal direction is "T"-shaped. The outer sliding sleeve of the slide bar 12 is provided with a slide plate 13 adapted thereto. The bottom of the other end of the slide plate 13 is rotated by a hinge seat 19 and a stop rod 15 is provided. A reset torsion spring is provided in the hinge seat 19. The reset torsion spring is used to control the tendency of the stop rod 15 to rotate counterclockwise, such as Figure 3 As shown by the middle arrow, the torsion spring structure and its function realization belong to the existing technology and are easy to implement, so they are not elaborated in detail and are not shown in the figure. A limit block 18 is provided at the bottom of the hinged seat 19 and on the right side of the baffle rod 15. Under the action of the reset torsion spring, the baffle rod 15 rotates counterclockwise and abuts against the limit block 18. At this time, the baffle rod 15 is in a vertical state. The surface of the hook 5 is provided with a limit groove 17 for the bottom end of the baffle rod 15 to be embedded. The bottom of the baffle rod 15 is provided with an induction plate 16. A base 10 is fixed between the front side surface of the hook frame 3 and the rear side surface of the adjacent protective plate 4. The bottom surface of the base 10 is fixedly connected to an electric push rod 11. The output end of the electric push rod 11 is vertically downward and connected to a connecting rod 20. The bottom end of the connecting rod 20 is fixed with a connecting plate 14. The rear side surface of the connecting plate 14 is fixedly connected to the front side surface of the slide plate 13.

[0024] When the lever 15 is in the closed position, the lever 15 is in the closed position, and the lever 15 is in the closed position, so that the lever 15 can be moved upwards and downwards by the action of the lever 15 and the limiter 17.

[0025] By setting the reset torsion spring and the limit block 18, the device can perform the hook operation when the blocking rod 15 just begins to leave the limit groove 17. There is no need to wait until the blocking rod 15 and the limit groove 17 are completely separated to the maximum distance. Because the blocking rod 15 can be rotated inward to open the opening of the hook 5, the operation is flexible and the work efficiency is improved.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A crane with inductive safety operation, comprising a crane body (1) and a hook frame (3); characterized in that: A pulley block is provided inside the hook frame (3), and a lifting rope (2) is provided inside the pulley block. The other end of the lifting rope (2) is connected to the crane body (1). A hook (5) is fixedly provided at the bottom of the hook frame (3). The front and rear surfaces of the hook frame (3) are respectively fixedly connected to two protective plates (4) through a plurality of connecting columns (6). Four reinforcing blocks (7) are fixedly connected between the two protective plates (4). The hook (5) includes an integrally formed connecting portion (8) and a hook portion (9). The right side surface of the connecting portion (8) is provided with a slide rail (12) in the vertical direction. The outer sliding sleeve of the slide rail (12) is provided with a slide plate (13) adapted thereto. The bottom of the other end of the slide plate (13) is connected to the hook (8). A stop rod (15) is provided for rotating through an articulated seat (19), a return torsion spring is provided in the articulated seat (19), a limit block (18) is provided at the bottom of the articulated seat (19) and on the right side of the stop rod (15), a limit groove (17) is provided on the surface of the hook (5) for the bottom end of the stop rod (15) to be embedded, an induction sheet (16) is provided at the bottom of the stop rod (15), a base (10) is fixedly provided between the front side surface of the hook frame (3) and the rear side surface of the protective plate (4) adjacent thereto, an electric push rod (11) is fixedly connected to the bottom surface of the base (10), an output end of the electric push rod (11) is vertically downward and connected to a connecting rod (20), and a connecting plate (14) is fixedly provided at the bottom end of the connecting rod (20).

2. The crane with inductive safety operation according to claim 1, characterized in that: When the blocking rod (15) abuts against the limiting block (18), the blocking rod (15) is in a vertical state.

3. The crane with inductive safety operation according to claim 2, characterized in that: The four reinforcement blocks (7) are distributed at the four corners of the inner surface of the protective plate (4).

4. The crane with inductive safety operation according to claim 3, characterized in that: The connecting portion (8) is fixedly arranged at the bottom center of the hook frame (3).

5. The crane with inductive safety operation according to claim 4, characterized in that: The horizontal cross section of the slide rail (12) is T-shaped.

6. The crane with inductive safety operation according to claim 1, characterized in that: The rear side surface of the connecting plate (14) is fixedly connected to the front side surface of the sliding plate (13).

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