Bolt fastening overhauling device for crown block track of aluminum electrolysis cell

Abstract

The utility model relates to the technical field of electrolytic cell crown block track maintenance equipment, and particularly discloses an aluminum electrolytic cell crown block track bolt fastening maintenance device which comprises a shell, a driving mechanism, a track clamping mechanism, an electric torque limiting wrench, a horizontal and vertical translation mechanism and a safety obstacle avoidance device. The rail clamping mechanism is arranged in the shell and used for clamping a crown block rail, the driving mechanism is connected in the shell and located on one side of the rail clamping mechanism, the safety obstacle avoiding device is connected to the end of the shell and used for avoiding collision with a crown block advancing on the crown block rail, the electric torque limiting wrench is connected to the horizontal and vertical translation mechanism, and the horizontal and vertical translation mechanism is connected to the shell. The device can provide convenience for overhauling when bolts of the crown block track are fastened and overhauled.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance equipment for the trolley track of an electrolytic cell, and particularly relates to a bolt tightening and maintenance device for the trolley track of an aluminum electrolytic cell. Background Technique

[0002] The trolley track of an aluminum electrolytic cell is an important production equipment in the electrolytic aluminum workshop, mainly used to complete operations such as crust breaking, anode changing, feeding, slag cleaning, auxiliary busbar lifting, lifting aluminum ladles and other material lifting for pre-baked anode electrolytic cells.

[0003] At present, there are the following problems in the bolt tightening operation of the trolley track of an aluminum electrolytic cell: First, the bolt tightening of the electrolytic multifunctional trolley track needs to be carried out once in spring and autumn every year; Second, the tightening is manually tightened by the trolley operator; Third, the track of each workshop is about 2000 meters long (double tracks in the north-south direction); Fourth, this work belongs to high-altitude edge operation, and personnel need to tighten with one hand. Therefore, this work is a repetitive operation, with high labor intensity, low manual tightening efficiency and high risk.

[0004] Therefore, a smart track maintenance device is sought to solve the above problems, which can effectively reduce the workload of employees, reduce the labor intensity of employees, reduce safety risks, and improve the equipment maintenance efficiency. A device for automatically maintaining the track is needed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a bolt tightening and maintenance device for the trolley track of an aluminum electrolytic cell, which can provide convenience for maintenance during the bolt tightening and maintenance of the trolley track.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A bolt tightening and maintenance device for the trolley track of an aluminum electrolytic cell includes a housing, a driving mechanism, a track clamping mechanism, an electric torque wrench, a horizontal and vertical translation mechanism and a safety obstacle avoidance device. The track clamping mechanism is connected under the housing and is used to clamp the trolley track. The driving mechanism is connected inside the housing and is located on one side of the track clamping mechanism. The driving mechanism is used to drive the entire tightening and maintenance device to move along the trolley track. The safety obstacle avoidance device is connected to the end of the housing and is used to avoid collision with the trolley moving on the trolley track. The electric torque wrench is connected to the horizontal and vertical translation mechanism, and the electric torque wrench is used to apply a certain torque to the track bolt. The horizontal and vertical translation mechanism is connected to the housing, and the horizontal and vertical translation mechanism is used to drive the electric torque wrench to move up, down, left and right to align with the track bolt.

[0008] In a further solution, the bolt tightening and maintenance device for the overhead crane track of an aluminum electrolysis cell further includes a host computer and an industrial camera. The industrial camera is connected to the housing and corresponds to the position of the bolts on the overhead crane track. The host computer is wirelessly connected to the industrial camera and is used to receive the photo information taken by the industrial camera, compare according to the photo information, and transmit control signals to the track clamping mechanism, the electric torque wrench, and the horizontal and vertical translation mechanism.

[0009] In a further solution, the driving mechanism includes a driving motor, a driving wheel, and a walking wheel. The walking wheel and the driving wheel are respectively connected to the lower ends of both ends of the housing, and the driving motor is connected to the driving wheel to drive the driving wheel to move.

[0010] In a further solution, the track clamping mechanism includes a mounting frame, a clamping wheel, a lead screw, and a clamping motor. The clamping wheel is connected to the lead screw, the lead screw is connected to the mounting frame, the clamping motor is drivingly connected to the lead screw, and the mounting frame is connected to the lower part of the housing.

[0011] In a further solution, the electric torque wrench includes a wrench rotation motor and a torque wrench. The torque wrench is connected to the wrench rotation motor, and the wrench rotation motor is connected to the horizontal and vertical translation mechanism.

[0012] In a further solution, the horizontal and vertical translation mechanism includes two linear movement mechanisms placed perpendicular to each other, and one of the linear movement mechanisms is connected to the moving end of the other linear movement mechanism.

[0013] In a further solution, the linear movement mechanism includes a synchronous belt assembly, a synchronous wheel drive motor, and a first connection block. The synchronous belt assembly is driven by the synchronous wheel drive motor, and the first connection block is connected between the synchronous belt assembly and the electric torque wrench.

[0014] In a further solution, the linear movement mechanism includes a lead screw assembly, a second connection block, and a lead screw drive motor. The lead screw drive motor is drivingly connected to the lead screw assembly. The lead screw assembly is connected to the moving end of the other linear movement mechanism, and the second connection block is connected between the lead screw assembly and the electric torque wrench.

[0015] In a further solution, the safety obstacle avoidance device includes a proximity switch and a buffer energy absorption mechanism. The proximity switch and the buffer energy absorption mechanism are both connected to the end of the housing. The buffer energy absorption mechanism is used to buffer the impulse generated when contacting the overhead crane housing, and the proximity switch is used to sense and feedback the signal of contacting an obstacle on the overhead crane track.

[0016] In a further solution, the safety obstacle avoidance device includes a laser obstacle avoidance radar, and the laser obstacle avoidance radar is connected to the housing.

[0017] Advantages of the utility model:

[0018] The device of the utility model can run back and forth along the track for maintenance, be clamped and positioned by the track clamping mechanism, and be adjusted by the horizontal and vertical translation mechanism to automatically move the electric torque wrench above the fixed bolt to tighten the track fixed bolt, which can be used for temporary or regular maintenance. The device has the characteristics of flexible response and fast speed, and the safety obstacle avoidance device can avoid collision with the overhead crane approaching during movement.

[0019] The device of the utility model can automatically collect non-compliant bolts through an industrial camera, and the horizontal and vertical translation mechanism is controlled by the upper computer to tighten the non-compliant bolts, which can improve the tightening efficiency. Description of the drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of a bolt tightening and maintenance device for the overhead crane track in an aluminum electrolysis cell in an embodiment of the present utility model;

[0022] Figure 2 It is an axial view connection schematic diagram of a track clamping mechanism in an embodiment of the present utility model;

[0023] Figure 3 It is a front view connection schematic diagram of a track clamping mechanism in an embodiment of the present utility model;

[0024] Figure 4 It is a connection schematic diagram of an electric torque wrench in an embodiment of the present utility model;

[0025] Figure 5 It is a flow block diagram of the upper computer control in an embodiment of the present utility model;

[0026] In the figure: 1, housing; 2, drive mechanism; 3, track clamping mechanism; 31, mounting bracket; 32, clamping wheel; 33, lead screw; 34, clamping motor; 4, electric torque wrench; 41, wrench rotation motor; 42, torque wrench; 5, horizontal and vertical translation mechanism; 51, lead screw assembly; 52, second connection block; 53, lead screw drive motor; 6, safety obstacle avoidance device; 60, laser obstacle avoidance radar; 7, industrial camera. Detailed implementation manners

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figure 1 shown, an overhaul device for fastening bolts of a crane rail in an aluminum electrolysis cell includes a housing 1, a driving mechanism 2, a rail clamping mechanism 3, an electric torque wrench 4, a horizontal and vertical translation mechanism 5, and a safety obstacle avoidance device 6. The rail clamping mechanism is connected under the housing 1 and is used for clamping the crane rail. The driving mechanism 2 is connected inside the housing 1 and is located on one side of the rail clamping mechanism. The safety obstacle avoidance device 6 is connected to the end of the housing 1 and is used to avoid collision with the crane moving on the crane rail. The electric torque wrench 4 is connected to the horizontal and vertical translation mechanism 5, and the horizontal and vertical translation mechanism 5 is connected to the housing 1.

[0029] Its working principle is as follows: during overhaul, first, the driving mechanism 2 drives the entire fastening and overhaul device to run along the crane rail to the bolt to be overhauled. The horizontal and vertical translation mechanism 5 drives the electric torque wrench 4 above the bolt, and the electric torque wrench 4 applies a certain torque to fasten the bolt. At this time, the rail clamping mechanism 3 clamps the rail to provide a stable supporting force for the electric torque wrench 4. After one bolt is completed, control the rail clamping mechanism 3 to clamp and release the rail, control the electric torque wrench 4 to move above the next bolt to be fastened, and repeat the above operation. During the running process of the entire device, if the safety obstacle avoidance device 6 touches the crane, it will automatically stop moving forward and can retreat under the action of the crane or its own driving mechanism 2 to prevent collision and damage with the crane.

[0030] According to the above working principle, some preferred implementation manners or implementation structures are provided. The fastening and overhaul device further includes a host computer and an industrial camera 7. The industrial camera 7 is connected to the housing 1 and corresponds to the position of the bolts on the crane rail. The host computer is wirelessly connected to the industrial camera 7 and is used to receive the photo information taken by the industrial camera 7. According to the comparison of the photo information, control signals are transmitted to the rail clamping mechanism 3, the electric torque wrench 4, and the horizontal and vertical translation mechanism 5. The industrial camera 7 can be used to identify and collect the position information of each bolt, then locate the abnormal bolt position and feedback it to the host computer, and control the driving mechanism, the horizontal and vertical translation mechanism 5, and the electric torque wrench 4 to be positioned above the abnormal bolt to overhaul the abnormal bolt, which can further improve the overhaul efficiency.

[0031] The driving mechanism 2 includes a driving motor, a driving wheel, and a traveling wheel. The traveling wheel and the driving wheel are respectively connected to the lower ends of both sides of the housing 1, and the driving motor is connected to the driving wheel for driving the driving wheel to travel. This structure is simple and is a commonly used driving mechanism 2, which is convenient for manufacturing and assembling with the housing 1, etc.

[0032] As Figure 2 and Figure 3 shown, the track clamping mechanism 3 includes a mounting bracket 31, a clamping wheel 32, a lead screw 33, and a clamping motor 34. The clamping wheel 32 is connected to the lead screw 33, the lead screw 33 is connected to the mounting bracket 31, the clamping motor 34 is drivingly connected to the lead screw 33, and the mounting bracket 31 is connected to the lower part of the housing 1. By controlling the rotation of the lead screw 33, the clamping wheel 32 is driven to slide and clamp the track to provide support for the electric torque wrench 4.

[0033] As Figure 4 shown, the electric torque wrench 4 includes a wrench rotation motor 41 and a torque wrench 42. The torque wrench 42 is connected to the wrench rotation motor, and the wrench rotation motor is connected to the horizontal and vertical translation mechanism 5. The structure of the electric torque wrench 4 is simple and is convenient to purchase. It mainly includes the above structure, and those skilled in the art should be able to think that additional structures can be added to achieve other functions.

[0034] The horizontal and vertical translation mechanism 5 includes two linear movement mechanisms placed perpendicular to each other, and one of the linear movement mechanisms is connected to the moving end of the other linear movement mechanism.

[0035] The linear movement mechanism includes a synchronous belt assembly, a synchronous wheel drive motor, and a first connection block. The synchronous belt assembly is driven by the synchronous wheel drive motor, and the first connection block is connected between the synchronous belt assembly and the electric torque wrench 4.

[0036] The linear movement mechanism includes a lead screw assembly 51, a second connection block 52, and a lead screw drive motor 53. The lead screw drive motor 53 is drivingly connected to the lead screw assembly 51. The lead screw assembly 51 is connected to the moving end of the other linear movement mechanism, and the second connection block is connected between the lead screw assembly 51 and the electric torque wrench 4.

[0037] Those skilled in the art should be able to think that the horizontal and vertical translation mechanism 5 can be assembled from the above linear movement mechanisms according to requirements. For example, both linear movement mechanisms are of the structure of the lead screw assembly 51, the second connection block, and the lead screw drive motor 53, or one of them is of the structure of the lead screw assembly 51, the second connection block, and the lead screw drive motor 53, and the other is of the structure of the synchronous belt assembly, the synchronous wheel drive motor, and the first connection block, as long as it can drive the electric torque wrench 4 to move left and right, up and down on the track.

[0038] The safety obstacle avoidance device 6 includes a proximity switch and a buffer energy absorption mechanism. The proximity switch and the buffer energy absorption mechanism are both connected to the end of the housing 1. The buffer energy absorption mechanism is used to buffer the impulse generated when contacting the housing 1 of the overhead crane, and the proximity switch is used to sense and feedback the signal of the obstacle contact on the overhead crane track. The buffer energy absorption mechanism can be a polyurethane block or a rubber shock absorber, and the buffer distance can be designed according to requirements. This can mechanically prevent hard damage caused by the collision between the device and the traveling crane on the overhead crane.

[0039] The safety obstacle avoidance device 6 includes a laser obstacle avoidance radar 60, and the laser obstacle avoidance radar 60 is connected to the housing 1. The lidar can provide an electronic sensing function, which can improve the obstacle avoidance range and accuracy, and further improve the safety of the fastening and maintenance device during maintenance.

[0040] The control system of the upper computer can adopt a bottom-layer drive control core, and an integrated industrial computer is used at the top layer for intelligent algorithm detection and wireless data communication, etc.; the data information between the bottom-layer and the top-layer industrial computers is connected in a bus form. At the same time, based on the development of control programs for device movement, perception, etc., it is used for bottom-layer movement control such as clamping and tightening of the device. As Figure 5 shown, it includes low-level information input, such as including level 0 task input; level 1 obstacle information perception module; level 2 remote control command input and reception module; level 3 emergency signal reception module. Corresponding to the task processing program module, obstacle information processing module, remote control command processing module and emergency signal processing module on the upper computer in sequence; the upper computer can also execute an obstacle avoidance strategy or task adjustment program according to the data results processed by each module, and control the function execution of the above-mentioned driving mechanism 2, track clamping mechanism 3, electric torque wrench 4 and horizontal and vertical translation mechanism 5. According to the motion function library, the fitting and correction service function execution module-level motion behavior execution module is used to control the maintenance time and fastening behavior of the entire fastening and maintenance device respectively. The upper computer can be an industrial computer, and its programming method is an existing method, which will not be elaborated one by one.

[0041] The vision detection system of the industrial camera 7 is a common system, and the industrial camera 7 can use lasers to identify the position of each bolt. Based on the YOLOv5 framework, starting from the pre-processing of the image of the operation scene of the intelligent maintenance device, aiming at the image noise reduction and feature enhancement problems under the multi-parameter coupling of the operation scene, the parameter adjustment strategy is determined through histogram statistics, and the filter and enhancement model are designed according to the established parameters. After completing the image pre-processing, design and implement a depth model for target object edge detection to complete the accurate detection and maintenance determination of the target object. On this basis, a lightweight design of the edge detection model is carried out to meet the requirements of detection real-time performance.

[0042] To ensure the normal operation of the device, the device will perform self-checks before starting operations. The self-check content includes high-definition cameras, drive motors, internal storage, and various sensors, etc. When any of the above modules malfunctions, the device can upload the fault information to the monitoring background so that it can be processed in a timely manner. This facilitates maintenance personnel to detect faults in a timely manner, reduces the processing time, and improves the efficiency of troubleshooting.

[0043] It should be noted that the terms "first", "second", etc. in this application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so as to implement the embodiments of the present application described herein. In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings.

[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A bolt fastening and maintenance device for an aluminum electrolytic cell overhead crane track, characterized in that: The invention comprises a housing (1), a driving mechanism (2), a track clamping mechanism (3), an electric torque-limiting wrench (4), a horizontal and vertical translation mechanism (5) and a safety obstacle avoidance device (6); the track clamping mechanism is connected under the housing (1) and is used to clamp the overhead travelling vehicle track; the driving mechanism (2) is connected in the housing (1) and is located on one side of the track clamping mechanism (3); the safety obstacle avoidance device (6) is connected to the end of the housing (1) and is used to avoid collision with the overhead travelling vehicle on the overhead travelling vehicle track; the electric torque-limiting wrench (4) is connected to the horizontal and vertical translation mechanism (5); and the horizontal and vertical translation mechanism (5) is connected to the housing (1).

2. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 1 is characterized in that: It also includes a host computer and an industrial camera (7), wherein the industrial camera (7) is connected to the housing (1) and corresponds to the bolt position on the overhead travelling crane track. The host computer and the industrial camera (7) are connected via wireless communication and are used to receive photo information taken by the industrial camera (7), and transmit control signals to the track clamping mechanism (3), the electric torque limiting wrench (4) and the horizontal and vertical translation mechanism (5) based on the comparison of the photo information.

3. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 1 is characterized in that: The driving mechanism (2) comprises a driving motor, a driving wheel and a running wheel, wherein the running wheel and the driving wheel are respectively connected to the two ends of the housing (1), and the driving motor is connected to the driving wheel to drive the driving wheel to run.

4. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 1 is characterized in that: The track clamping mechanism (3) comprises a mounting frame (31), a clamping wheel (32), a screw rod (33) and a clamping motor (34); the clamping wheel (32) is connected to the screw rod (33); the screw rod (33) is connected to the mounting frame (31); the clamping motor (34) is drivingly connected to the screw rod (33); and the mounting frame (31) is connected under the housing (1).

5. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 1 is characterized in that: The electric torque wrench (4) comprises a wrench rotating motor (41) and a torque wrench (42), wherein the torque wrench (42) is connected to the wrench rotating motor (41), and the wrench rotating motor (41) is connected to the horizontal and vertical translation mechanism (5).

6. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 1 is characterized in that: The horizontal and vertical translation mechanism (5) comprises two linear motion mechanisms placed perpendicular to each other, wherein one linear motion mechanism is connected to the moving end of the other linear motion mechanism.

7. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 6 is characterized in that: The linear motion mechanism comprises a synchronous belt assembly, a synchronous wheel driving motor and a first connecting block, wherein the synchronous belt assembly is driven by the synchronous wheel driving motor, and the first connecting block is connected between the synchronous belt assembly and the electric torque limiting wrench (4).

8. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 6, characterized in that: The linear motion mechanism comprises a screw assembly (51), a second connecting block and a screw drive motor (53); the screw drive motor (53) is drivingly connected to the screw assembly (51); the screw assembly (51) is connected to the moving end of another linear motion mechanism; and the second connecting block is connected between the screw assembly (51) and the electric torque wrench (4).

9. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 1, characterized in that: The safety obstacle avoidance device (6) comprises a proximity switch and a buffer energy absorption mechanism, both of which are connected to the end of the housing (1), the buffer energy absorption mechanism is used to buffer the impulse generated when contacting the overhead travelling vehicle housing (1), and the proximity switch is used to sense and feedback the signal of contact with an obstacle on the overhead travelling vehicle track.

10. The aluminum electrolysis cell overhead crane rail bolt fastening and maintenance device according to claim 1, characterized in that: The safety obstacle avoidance device (6) comprises a laser obstacle avoidance radar (60), and the laser obstacle avoidance radar (60) is connected to the housing (1).

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