Cart walking synchronous detection device for portal crane

Abstract

The utility model discloses a cart walking synchronous detection device for a portal crane, which relates to the technical field of crane walking detection, and comprises a detection support frame, the upper end of the detection support frame is provided with a connecting frame, and the upper end of the connecting frame is provided with a connecting rod. A supporting seat is arranged between the detection supporting frame and the connecting frame; according to the cart walking synchronous detection device for the portal crane, through the arrangement of a detection supporting frame, in the process that a hub moves along the upper end of a track, a trigger rod is driven to make contact with the detection end of a limiting switch, the hub rotates by one circle, meanwhile, the trigger rod and the limiting switch are triggered once, and trigger data are fed back to the interior of a control circuit board; and the triggering number is collected, the moving distance is calculated and fed back to a crane control system, so that crane walking synchronous detection is carried out, the accuracy rate is high, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crane travel detection, in particular to a trolley travel synchronization detection device for a gantry crane. Background Art

[0002] Gantry crane, also known as gantry crane, is a variation of bridge crane. The metal structure of gantry crane is like a door-shaped frame. Two legs are installed under the main beam. It can walk directly on the track on the ground. Both ends of the main beam can have outward cantilever beams. It has the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility. It is mainly used for outdoor cargo yards, material yards, and bulk cargo loading and unloading operations. During the walking process, the walking position of the bottom trolley needs to be synchronously monitored and detected.

[0003] However, the existing detection method is to install an encoder on one set of wheel hubs, and import the travel data into the control system inside the crane for analysis. Since the wheel hubs are prone to deviation and rail gnawing during long-term use, errors will occur and the position of the wheel hubs cannot be correctly detected. For this reason, the utility model proposes a trolley travel synchronization detection device for gantry cranes. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a trolley travel synchronization detection device for a gantry crane, which solves the problems in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model is implemented by the following technical solutions: a trolley travel synchronization detection device for a gantry crane, comprising a detection support frame, a connecting frame is arranged at the upper end of the detection support frame, a support seat is arranged between the detection support frame and the connecting frame, a crane frame is connected to the upper end of the connecting frame, a wheel hub and a movable shaft are arranged inside the detection support frame, and a track is arranged at the bottom of the wheel hub;

[0006] The detection support frame includes a mounting frame, a limit switch is installed at the bottom of the mounting frame, a trigger rod is arranged inside the wheel hub, a control box is installed inside the detection support frame, a control circuit board, a battery and a speaker are arranged inside the control box, and a speaker hole is installed on one side of the control box.

[0007] As a further technical solution of the utility model, the number of the detection support frames is several groups and distributed in an array, and the connecting frame and the detection support frame are connected via a support seat.

[0008] As a further technical solution of the utility model, the number of the hubs is twice the number of the detection support frames, the number of the movable shafts is equal to the number of the hubs, and the two are adapted to each other, the number of the tracks is two groups and is symmetrically distributed, and the hubs are adapted to each other.

[0009] As a further technical solution of the utility model, the mounting frame and the detection support frame are fixedly connected by bolts, the limit switch and the control circuit board are electrically connected, and the control circuit board and the internal control system of the crane are electrically connected.

[0010] As a further technical solution of the utility model, the trigger rod is fixedly connected to the wheel hub, the number of the trigger rods is several groups and distributed in an array, the control box is fixedly connected to the detection support frame, and the control circuit board is electrically connected to the battery.

[0011] As a further technical solution of the utility model, the speaker is electrically connected to the control circuit board, the speaker hole corresponds to the speaker, and a dustproof net is arranged inside the speaker hole.

[0012] The utility model provides a trolley travel synchronization detection device for a gantry crane. Compared with the prior art, it has the following beneficial effects:

[0013] 1. The trolley travel synchronization detection device for gantry cranes, through the setting of the detection support frame, drives the trigger rod to contact the detection end of the limit switch during the movement of the wheel hub along the upper end of the track. The wheel hub rotates one circle, and the trigger rod and the limit switch are triggered once. The trigger data is fed back to the inside of the control circuit board, the trigger quantity is summarized, the moving distance is calculated, and fed back to the crane control system, so as to perform crane travel synchronization detection with high accuracy and improve its practicality.

[0014] 2. The trolley travel synchronization detection device used for gantry cranes detects the setting of the support frame. When several groups of wheel hubs are triggered by the corresponding limit switches and trigger rods, the trigger data is compared to find the group with a higher data synchronization rate as the actual movement distance of the wheel hub. For the wheel hub with inaccurate data, an alarm will be sounded through the speaker to remind the corresponding wheel hub of the deviation or rail gnawing during the movement, and it needs to be maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a trolley travel synchronization detection device for a gantry crane;

[0016] Figure 2 Another perspective view of the trolley travel synchronization detection device for gantry crane;

[0017] Figure 3 For gantry crane trolley travel synchronization detection device Figure 2 Side section view of middle AA;

[0018] Figure 4 For gantry crane trolley travel synchronization detection device Figure 3 A is an enlarged view of the middle image.

[0019] In the figure: 1. detection support frame; 11. mounting frame; 12. limit switch; 13. trigger rod; 14. control box; 15. control circuit board; 16. battery; 17. speaker; 18. speaker hole; 2. connecting frame; 3. support base; 4. lifting frame; 5. wheel hub; 6. movable shaft; 7. track. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, 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.

[0021] See also Figure 1-4 The utility model provides a technical solution for a trolley travel synchronization detection device for a gantry crane: the trolley travel synchronization detection device for a gantry crane comprises a detection support frame 1, a connecting frame 2 is arranged at the upper end of the detection support frame 1, a support seat 3 is arranged between the detection support frame 1 and the connecting frame 2, a crane frame 4 is connected to the upper end of the connecting frame 2, a wheel hub 5 and a movable shaft 6 are arranged inside the detection support frame 1, and a track 7 is arranged at the bottom of the wheel hub 5;

[0022] Among them, the detection support frame 1 includes a mounting frame 11, a limit switch 12 is installed at the bottom of the mounting frame 11, a trigger rod 13 is arranged inside the wheel hub 5, a control box 14 is installed inside the detection support frame 1, a control circuit board 15, a battery 16 and a speaker 17 are arranged inside the control box 14, and a speaker hole 18 is installed on one side of the control box 14.

[0023] See also Figure 1-4 The number of detection support frames 1 is several groups and distributed in an array. The connecting frame 2 is connected to the detection support frame 1 through a support seat 3. The number of hubs 5 is twice the number of detection support frames 1. The number of movable shafts 6 is equal to the number of hubs 5, and the two are adapted to each other. The number of rails 7 is two groups and distributed symmetrically. The hubs 5 and the rails 7 are adapted to each other, which is conducive to the support and subsequent movement of the lifting frame 4.

[0024] See also Figure 1-4 The mounting frame 11 is fixedly connected to the detection support frame 1 by bolts, the limit switch 12 is electrically connected to the control circuit board 15, the control circuit board 15 is electrically connected to the internal control system of the crane, the trigger rod 13 is fixedly connected to the wheel hub 5, the number of the trigger rods 13 is several groups and is distributed in an array, the control box 14 is fixedly connected to the detection support frame 1, the control circuit board 15 is electrically connected to the battery 16, the speaker 17 is electrically connected to the control circuit board 15, the speaker hole 18 corresponds to the speaker 17, and a dustproof net is arranged inside the speaker hole 18, so as to facilitate the summing up of the triggering number of the limit switch 12, calculate the moving distance, and feed it back to the crane control system, and at the same time, the data of several groups of limit switches 12 are compared, and the group with a higher data synchronization rate is used as the actual moving distance of the wheel hub 5, so as to judge the position of the wheel hub 5, and the wheel hub 5 with inaccurate data will alarm through the speaker 17 along the speaker hole 18, reminding the wheel hub 5 that the displacement or rail gnawing occurs during the movement, and it needs to be maintained.

[0025] The working principle of the utility model is as follows: during the use of the detection device, the connecting frame 2 is connected to the detection support frame 1 through the support of the support seat 3, and the lifting frame 4 is supported at the same time, and then the wheel hub 5 is moved along the outer side of the track 7, and the detection support frame 1 is triggered to detect the walking position of the wheel hub 5.

[0026] It should be noted that, through the setting of the detection support frame 1, when several groups of wheel hubs 5 move along the upper end of the track 7, they rotate along the middle of the movable shaft 6 at the same time, further driving the trigger rod 13 to rotate, so that the trigger rod 13 will contact the detection end of the limit switch 12 during one rotation, thereby triggering the limit switch 12, and feeding back the trigger data to the inside of the control circuit board 15. The wheel hub 5 rotates one circle, and the trigger rod 13 and the limit switch 12 are triggered once, so that the number of triggers of the limit switch 12 is summarized, the moving distance is calculated, and fed back to the crane control system. At the same time, the data of several groups of limit switches 12 are compared, and the group with a higher data synchronization rate is used as the actual moving distance of the wheel hub 5, so as to judge the position of the wheel hub 5. The wheel hub 5 with inaccurate data will alarm through the speaker 17 along the speaker hole 18, reminding the corresponding wheel hub 5 that it has deviated or bitten the track during the movement, and it needs to be maintained, so as to perform synchronous detection of crane travel, with high accuracy, and improve its practicality.

Claims

1. A trolley travel synchronization detection device for a gantry crane, comprising a detection support frame (1), characterized in that: A connecting frame (2) is arranged at the upper end of the detection support frame (1), a support seat (3) is arranged between the detection support frame (1) and the connecting frame (2), a lifting frame (4) is connected to the upper end of the connecting frame (2), a wheel hub (5) and a movable shaft (6) are arranged inside the detection support frame (1), and a track (7) is arranged at the bottom of the wheel hub (5); The detection support frame (1) comprises a mounting frame (11), a limit switch (12) is installed at the bottom of the mounting frame (11), a trigger rod (13) is arranged inside the wheel hub (5), a control box (14) is installed inside the detection support frame (1), a control circuit board (15), a battery (16) and a speaker (17) are arranged inside the control box (14), and a speaker hole (18) is installed on one side of the control box (14).

2. The trolley travel synchronization detection device for a gantry crane according to claim 1 is characterized in that: The detection support frames (1) are provided in a plurality of groups and are distributed in an array, and the connection frame (2) is connected to the detection support frame (1) via a support seat (3).

3. The trolley travel synchronization detection device for a gantry crane according to claim 1 is characterized in that: The number of the wheel hubs (5) is twice the number of the detection support frames (1); the number of the movable shafts (6) is equal to that of the wheel hubs (5), and the two are adapted to each other; the number of the tracks (7) is two groups and is symmetrically distributed; the wheel hubs (5) and the tracks (7) are adapted to each other.

4. The trolley travel synchronization detection device for a gantry crane according to claim 1, characterized in that: The mounting frame (11) and the detection support frame (1) are fixedly connected by bolts, the limit switch (12) and the control circuit board (15) are electrically connected, and the control circuit board (15) and the internal control system of the crane are electrically connected.

5. The trolley travel synchronization detection device for a gantry crane according to claim 1, characterized in that: The trigger rod (13) is fixedly connected to the wheel hub (5), the trigger rods (13) are provided in a plurality of groups and are distributed in an array, the control box (14) is fixedly connected to the detection support frame (1), and the control circuit board (15) is electrically connected to the battery (16).

6. The trolley travel synchronization detection device for a gantry crane according to claim 1, characterized in that: The loudspeaker (17) is electrically connected to the control circuit board (15), the loudspeaker hole (18) corresponds to the loudspeaker (17), and a dustproof net is arranged inside the loudspeaker hole (18).

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