Tire crane lifting anti-winding limit switch hammer iron

Abstract

The utility model discloses a tire crane lifting anti-winding limit switch hammer iron, and relates to the field of lifting equipment. The limiting device comprises a limiting frame, the limiting frame is installed on a suspension arm of the tire crane in a suspended mode through an installation connecting piece, and a main machine steel wire rope and an auxiliary machine steel wire rope of the tire crane both extend downwards to penetrate through an inner ring of the limiting frame. One end of the detection connecting piece is connected with a limit switch assembly; and the limit switch assembly is rotationally mounted on a suspension arm of the tire crane. According to the utility model, the limit frame is used as the hammer iron, and the steel wire ropes of the main machine and the auxiliary machine of the tire crane penetrate through the limit frame, so that the limit switch hammer iron is matched with the limit switch assembly, and the lifting height of the steel wire ropes of the main machine and the auxiliary machine can be detected at the same time; even if steel wire ropes of the main machine and the auxiliary machine are wound, the limiting frame cannot be pulled to ascend and descend, and therefore the situation that the limiting switch is triggered and pulled to be damaged due to malfunction of hammer iron can be prevented.

Description

Technical Field

[0001] The utility model belongs to the field of lifting equipment, and in particular relates to a tire crane lifting anti-winding limit switch hammer. Background Art

[0002] A tire crane, commonly known as a tire crane, refers to a boom-rotating crane that uses a tire chassis to travel. The lifting mechanism of a tire crane mainly includes a main machine wire rope, an auxiliary machine wire rope, and a limit switch. The main machine wire rope passes through the limit switch hammer. When the main machine wire rope rises to a certain height, the limit switch hammer will be synchronously abutted upward due to the hook and other equipment hanging at the bottom of the wire rope, thereby triggering the limit switch assembly connected to the limit switch hammer, so that the lifting mechanism stops the winding of the main machine wire rope to prevent the main machine wire rope from over-winding and causing equipment failure.

[0003] However, investigation and analysis revealed that when the lifting mechanism of the tire crane is used for grab operations, the wire ropes of the main machine and the auxiliary machine often get entangled, which can easily drive the limit switch hammer to move up and down when the auxiliary machine wire rope is retracted and released, causing malfunctions. In severe cases, the limit switch assembly may be damaged, directly leading to frequent equipment failures. Utility Model Content

[0004] In view of the problems in the related technology, the utility model proposes a tire crane lifting anti-winding limit switch hammer to overcome the above technical problems existing in the existing related technology.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a tire crane lifting anti-winding limit switch hammer, comprising a limit frame, a top of which is provided with a mounting connector and a detection connector, the limit frame is suspended and installed on the arm of the tire crane through the mounting connector, and the main machine wire rope and the auxiliary machine wire rope of the tire crane are both extended downward and pass through the inner circle of the limit frame;

[0007] One end of the detection connecting piece is connected to a limit switch assembly, and the limit switch assembly is rotatably mounted on the boom of the tire crane.

[0008] Furthermore, the mounting connector includes mounting rings fixedly mounted on the four corners of the top surface of the limiting frame, and each of the mounting rings is mounted and connected with a chain.

[0009] Furthermore, the detection connecting piece includes a rope buckle and a connecting rope, the rope buckle is fixedly installed on the top surface of the limit frame, one end of the connecting rope is bound and connected to the rope buckle, and the other end of the connecting rope is bound and connected to the bottom end of the limit switch assembly.

[0010] Furthermore, a buffer spring is connected and installed between the connecting rope and the limit switch assembly.

[0011] Furthermore, the connecting rope is a steel cable.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the utility model, the limit frame is used as a hammer, and the main machine and auxiliary machine wire ropes of the tire crane all pass through the limit frame, so that the limit switch hammer and the limit switch assembly can cooperate to detect the lifting height of the main machine and auxiliary machine wire ropes at the same time, thereby improving the detection effect of the limit switch. At the same time, since the main machine and auxiliary machine wire ropes are located in the inner circle of the limit frame, even if the main machine and auxiliary machine wire ropes are entangled, the limit frame will not be pulled up or down, thereby preventing the hammer from erroneously triggering the limit switch and pulling and damaging the limit switch, thereby improving the detection accuracy and service life of the limit switch and reducing the failure rate of the equipment; and the limit frame is connected to the boom of the tire crane by installing a connecting piece, which can reduce the impact force of the limit frame on the limit switch assembly when it moves under the collision of the main machine and auxiliary machine wire ropes, prevent the limit switch assembly from being pulled and damaged, and further improve the service life of the limit switch.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings can also be obtained based on these drawings without paying creative work.

[0016] Figure 1 The utility model is a schematic diagram of the structure of the limit switch hammer.

[0017] In the figure: 1. limit frame; 2. mounting ring; 3. chain; 4. rope buckle; 5. connecting rope; 6. buffer spring; 7. limit switch assembly. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0020] See also Figure 1 As shown, the utility model is a tire crane lifting anti-winding limit switch hammer, comprising a limit frame 1, a mounting connector and a detection connector are arranged on the top of the limit frame 1, the limit frame 1 is suspended and installed on the boom of the tire crane through the mounting connector, and the main machine wire rope and the auxiliary machine wire rope of the tire crane are both extended downward through the inner circle of the limit frame 1; one end of the detection connector is connected to the limit switch assembly 7, and the limit switch assembly 7 is rotatably installed on the boom of the tire crane;

[0021] Among them, the limit switch assembly 7 is connected to the control system of the tire crane lifting mechanism. When the lifting mechanism works normally, the limit frame 1 is suspended and connected to the limit switch assembly 7 through the detection connector. At this time, the limit switch assembly 7 is subjected to the tension of the limit frame 1. When the main machine wire rope and the auxiliary machine wire rope are wound up and rise to the warning position, the hook and other mechanisms suspended at the bottom end of the wire rope abut against the bottom end of the limit frame 1, and the limit frame 1 is abutted and raised. At this time, the limit switch assembly 7 is no longer subjected to the tension of the limit frame 1, and the detection information is transmitted to the control system of the lifting mechanism, so that the control system controls the lifting mechanism to stop working and no longer winds up the main machine wire rope and the auxiliary machine wire rope;

[0022] In the utility model, the limit frame 1 is used as a hammer, and the main machine and auxiliary machine wire ropes of the tire crane all pass through the limit frame 1, so that the limit switch can detect the lifting height of the main machine and auxiliary machine wire ropes at the same time, thereby improving the detection effect of the limit switch. At the same time, since the main machine and auxiliary machine wire ropes are located in the inner circle of the limit frame 1, even if the main machine and auxiliary machine wire ropes are entangled, the limit frame 1 will not be pulled up and down, thereby preventing the limit frame 1 from erroneously triggering the limit switch assembly 7 or pulling and damaging the limit switch assembly 7, thereby improving the detection accuracy and service life of the limit switch and reducing the failure rate of the equipment; and the limit frame 1 is connected to the boom of the tire crane by installing a connecting piece, which can reduce the impact force of the limit frame 1 on the limit switch assembly 7 when it shakes under the collision of the main machine and auxiliary machine wire ropes, preventing the limit switch assembly 7 from being pulled and damaged, thereby further improving the service life of the limit switch.

[0023] Specifically, the installation connector includes installation rings 2 fixedly installed at the four corners of the top surface of the limit frame 1, and each installation ring 2 is installed and connected with a chain 3. The limit frame 1 is suspended and installed by the cooperation of the chain 3 and the installation ring 2. While ensuring the installation firmness of the limit frame 1, the limit frame 1 has sufficient degrees of freedom and will not affect the normal operation and lifting detection process of the tire crane lifting mechanism.

[0024] Specifically, the detection connecting part includes a rope buckle 4 and a connecting rope 5. The rope buckle 4 is fixedly installed on the top surface of the limit frame 1. One end of the connecting rope 5 is tied and connected to the rope buckle 4, and the other end of the connecting rope 5 is tied and connected to the bottom end of the limit switch assembly 7. A buffer spring 6 is installed between the connecting rope 5 and the limit switch assembly 7. The connecting rope 5 is a steel cable. When the limit frame 1 shakes driven by the steel wire ropes of the main machine and the auxiliary machine, the buffer spring 6 can buffer the limit frame 1 and the limit switch assembly 7, further reducing the tension on the limit switch assembly 7, and preventing the limit switch assembly 7 from being pulled and damaged.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A tire crane lifting anti-winding limit switch hammer, characterized by: The invention comprises a limit frame (1), the top of which is provided with a mounting connector and a detection connector, the limit frame (1) is suspended on the boom of the tire crane through the mounting connector, and the main machine wire rope and the auxiliary machine wire rope of the tire crane both extend downward and pass through the inner ring of the limit frame (1); One end of the detection connection piece is connected to a limit switch assembly (7), and the limit switch assembly (7) is rotatably mounted on the arm of the tire crane.

2. The tire crane lifting anti-winding limit switch hammer according to claim 1 is characterized in that: The mounting connector comprises mounting ring buckles (2) fixedly mounted on the four corners of the top surface of the limiting frame (1), and each mounting ring buckle (2) is mounted and connected with a chain (3).

3. The tire crane lifting anti-winding limit switch hammer according to claim 1 is characterized in that: The detection connecting part comprises a rope buckle (4) and a connecting rope (5), wherein the rope buckle (4) is fixedly mounted on the top surface of the limit frame (1), one end of the connecting rope (5) is tied and connected to the rope buckle (4), and the other end of the connecting rope (5) is tied and connected to the bottom end of the limit switch assembly (7).

4. The tire crane lifting anti-winding limit switch hammer according to claim 3 is characterized in that: A buffer spring (6) is connected and installed between the connecting rope (5) and the limit switch assembly (7).

5. The tire crane lifting anti-winding limit switch hammer according to claim 3 is characterized by: The connecting rope (5) is a steel cable.

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