A positioning device for a telescopic boom of a ship loader

Abstract

The utility model discloses a kind of ship loader telescopic arm positioning device, including cantilever fixed arm, cantilever telescopic arm is provided in the cantilever fixed arm, the bottom of the inner wall of cantilever fixed arm is fixedly connected with moving wheel, the bottom of cantilever telescopic arm is symmetrically provided with guide rail, the inner wall side of cantilever fixed arm close to bottom is clamped with first calibration inductor, the top of the inner wall of cantilever fixed arm close to first calibration inductor is clamped with second calibration inductor, the top of the inner wall of cantilever fixed arm close to second calibration inductor is clamped with third calibration inductor. The utility model is by on cantilever telescopic arm front side, middle side and rear side, respectively equidistantly set calibration response block, cooperate with the calibration inductor of different height on cantilever fixed arm, realize dynamic calibration, effectively eliminate the cumulative error generated in back and forth telescopic process of ship loader cantilever telescopic arm, improve ship loader operation positioning effectiveness, guarantee bucket wheel machine equipment safety, stable operation.

Description

Technical Field

[0001] This utility model relates to the field of ship loader technology, and in particular to a positioning device for a ship loader telescopic arm. Background Technology

[0002] Ship loaders are large bulk cargo handling machines used for loading cargo onto ships at bulk terminals. A typical ship loader consists of a boom conveyor, transition conveyor, telescopic chute, tail car, traveling mechanism, gantry, tower, pitching mechanism, and slewing mechanism. The boom, also known as the cantilever, is the load-bearing structure of the boom conveyor. Large ship loaders typically have a telescopic boom to accommodate the loading range of large ships with wide holds.

[0003] In existing technologies, achieving automatic control of ship loaders requires precise positioning of the trolley, cantilever, and chute mechanisms to determine the precise position of the chute during the loading process and achieve accurate control. The cantilever telescopic arm uses a track and hub structure, and there is usually a large gap between the hub and the track. Therefore, during long-term operation, the hub may slip or deviate, causing deviations in the positioning encoder detection of the cantilever telescopic arm. These deviations have a cumulative effect; over time, the accumulated positioning deviation of the cantilever telescopic arm will affect the positioning of the chute, and in severe cases, cause the chute to collide with the ship's hold, resulting in a production safety accident. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a positioning device for the telescopic boom of a ship loader.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a telescopic boom positioning device for a ship loader, comprising a cantilever fixed arm, a cantilever telescopic arm disposed inside the cantilever fixed arm, a movable wheel fixedly connected to the bottom of the inner wall of the cantilever fixed arm, guide rails symmetrically disposed at the bottom of the cantilever telescopic arm, a first calibration sensor snapped into the inner wall side of the cantilever fixed arm near the bottom, a second calibration sensor snapped into the top of the inner wall of the cantilever fixed arm near the first calibration sensor, and a third calibration sensor snapped into the top of the inner wall of the cantilever fixed arm near the second calibration sensor;

[0006] The side of the cantilever telescopic arm near the first calibration sensor is fitted with a first calibration sensor block, the side of the cantilever telescopic arm near the second calibration sensor is fitted with a second calibration sensor block, and the side of the cantilever telescopic arm near the third calibration sensor is fitted with a third calibration sensor block.

[0007] Both the fixed cantilever arm and the telescopic cantilever arm are equipped with locking mechanisms for assembling and disassembling the sensor and sensor block.

[0008] A positioning encoder is installed at the cantilever telescopic drive gear of the ship loader.

[0009] As a further description of the above technical solution:

[0010] The locking mechanism includes a fixing plate disposed on the cantilever fixed arm and the cantilever telescopic arm. A connecting plate is snapped onto the surface of the fixing plate. Fixing bolts are installed in a circumferential array on the surface of the fixing plate. Locking elements are disposed in a circumferential array on the surface of the fixing plate.

[0011] As a further description of the above technical solution:

[0012] The locking component includes a fixed block arranged in a circumferential array on the surface of a fixed plate. The top of the fixed block has a movable groove, and the inner wall of the movable groove has a moving groove. The inner wall of the moving groove is slidably connected to a locking rod. The inner wall of the moving groove is provided with a return spring that contacts the locking rod. The connecting plate has a groove for the locking rod to engage.

[0013] As a further description of the above technical solution:

[0014] A movable rod is slidably connected to the locking rod on one side near the movable groove, and an adjusting block is fixedly connected to the end of the movable rod.

[0015] As a further description of the above technical solution:

[0016] The inner wall of the movable groove is provided with positioning holes for the movable rod to be engaged.

[0017] As a further description of the above technical solution:

[0018] The outer contour of the adjustment block is provided with anti-slip protrusions, and two anti-slip grooves are formed by these anti-slip protrusions.

[0019] As a further description of the above technical solution:

[0020] The outer contour of the adjustment block is provided with anti-slip protrusions, and anti-slip textures are formed by these anti-slip protrusions.

[0021] As a further description of the above technical solution:

[0022] A through hole is provided in the middle of the fixing plate and the connecting plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. Compared with the prior art, the positioning device for the telescopic boom of the ship loader achieves dynamic calibration by setting calibration sensing blocks at equal intervals on the front, middle and rear sides of the telescopic boom, and cooperating with calibration sensors of different heights on the fixed arm of the cantilever to effectively eliminate the cumulative error generated by the telescopic boom of the ship loader during the back and forth extension and retraction process, improve the positioning effectiveness of the ship loader, and ensure the safe and stable operation of the bucket wheel excavator.

[0025] 2. Compared with the prior art, this ship loader telescopic boom positioning device installs a locking mechanism on the calibration sensor and calibration sensor block, and installs multiple calibration sensors and calibration sensor blocks on the cantilever fixed arm and cantilever telescopic arm respectively. This allows the staff to disassemble, install and replace the calibration sensors and calibration sensor blocks separately after they are damaged, making equipment maintenance convenient and improving the practicality of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a positioning calibration system for a ship loader telescopic boom positioning device proposed in this utility model;

[0027] Figure 2 This is a partial side view of the cantilever fixed arm and cantilever telescopic arm of the positioning device for the telescopic arm of a ship loader proposed in this utility model.

[0028] Figure 3 This is a side view of the cantilever telescopic arm structure of a positioning device for a ship loader telescopic arm proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the main structure of the locking mechanism of the positioning device for the telescopic arm of a ship loader proposed in this utility model;

[0030] Figure 5 This is a cross-sectional structural diagram of the locking component of a positioning device for a telescopic boom of a ship loader proposed in this utility model;

[0031] In the diagram: 1. Cantilever fixed arm; 2. Cantilever telescopic arm; 3. Moving wheel; 4. Guide rail; 5. First calibration sensor; 6. Second calibration sensor; 7. Third calibration sensor; 8. First calibration sensing block; 9. Second calibration sensing block; 10. Third calibration sensing block; 11. Locking mechanism; 12. Fixing plate; 13. Connecting plate; 14. Wire hole; 15. Fixing bolt; 16. Fixing block; 17. Movable groove; 18. Moving groove; 19. Locking rod; 20. Movable rod; 21. Adjusting block; 22. Return spring; 23. Positioning hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1-5 This utility model provides a positioning device for a telescopic boom of a ship loader, including a cantilever fixed arm 1, a cantilever telescopic arm 2 disposed inside the cantilever fixed arm 1, a movable wheel 3 fixedly connected to the bottom of the inner wall of the cantilever fixed arm 1, guide rails 4 symmetrically arranged at the bottom of the cantilever telescopic arm 2, a first calibration sensor 5 snapped into the inner wall side of the cantilever fixed arm 1 near the bottom, a second calibration sensor 6 snapped into the top of the inner wall of the cantilever fixed arm 1 near the first calibration sensor 5, and a third calibration sensor 6 snapped into the top of the inner wall of the cantilever fixed arm 1 near the second calibration sensor 6. The first calibration sensor 8 is snapped onto the side of the cantilever telescopic arm 2 near the first calibration sensor 5, the second calibration sensor 9 is snapped onto the side of the cantilever telescopic arm 2 near the second calibration sensor 6, and the third calibration sensor 10 is snapped onto the side of the cantilever telescopic arm 2 near the third calibration sensor 7. Locking mechanisms 11 for assembling and disassembling the sensors and sensor blocks are provided on both the cantilever fixed arm 1 and the cantilever telescopic arm 2. A positioning encoder is provided at the telescopic drive gear of the ship loader cantilever telescopic arm 2.

[0034] The first calibration sensor 5, the second calibration sensor 6, and the third calibration sensor 7 are arranged vertically on the cantilever fixed arm 1. The first calibration sensor block 8, the second calibration sensor block 9, and the third calibration sensor block 10 are arranged horizontally on the cantilever telescopic arm 2, corresponding to the height of the first calibration sensor 5, the second calibration sensor 6, and the third calibration sensor 7. A new gear with the same module as the drive gear is added and meshes with the drive gear to detect the moving distance of the cantilever telescopic arm 2 of the ship loader. Then, a PLC controller is placed in the electrical room of the ship loader to receive calibration signals and perform numerical calibration on the positioning encoder of the cantilever telescopic arm 2.

[0035] During the extension and retraction of the cantilever telescopic arm 2, the calibration sensing block at the same height can trigger the calibration sensor on the cantilever telescopic arm 2 at the corresponding height, and then send the calibration signal to the PLC to calibrate the positioning data of the cantilever telescopic arm 2 in real time. At the same time, the calibration sensor and calibration sensing block at the same height are within the safe working range, while the calibration sensor and calibration sensing block at different heights are outside the safe working range. Therefore, the calibration sensor at different heights will not transmit signals to the PLC controller.

[0036] The calibration sensor is an existing technology, made using a reed switch, and manufactured by Schmersal with model number BN20-11RZ-M16.

[0037] Among them, the calibration sensing block is existing technology, made of permanent magnets, manufactured by Schmersal, and model BP21N;

[0038] The locking mechanism 11 includes a fixing plate 12 disposed on the cantilever fixed arm 1 and the cantilever telescopic arm 2. A connecting plate 13 is snapped onto the surface of the fixing plate 12. Fixing bolts 15 are installed in a circumferential array on the surface of the fixing plate 12. Locking elements are arranged in a circumferential array on the surface of the fixing plate 12. A wire hole 14 is provided through the middle of the fixing plate 12 and the connecting plate 13.

[0039] When it is necessary to install a calibration sensor or calibration sensor block, fix the calibration sensor or calibration sensor block to be installed on the connecting plate 13, and then use the locking device to snap the connecting plate 13 onto the fixing plate 12. Then use the fixing bolts 15 to fix it to the cantilever fixed arm 1 or cantilever telescopic arm 2. Then pass the cable on the calibration sensor or calibration sensor block to be installed through the cable hole 14 and connect it to the external power supply. After it is damaged due to long-term use, the staff can disassemble it through the locking device and then replace it. This increases the efficiency of the staff in disassembling, assembling and replacing the calibration sensor or calibration sensor block when it is damaged.

[0040] The locking component includes fixed blocks 16 arranged in a circumferential array on the surface of the fixed plate 12. The top of the fixed block 16 has a movable groove 17, and the inner wall of the movable groove 17 has a moving groove 18. The inner wall of the moving groove 18 is slidably connected to a locking rod 19. The inner wall of the moving groove 18 is provided with a return spring 22 that contacts the locking rod 19. The connecting plate 13 has a groove for the locking rod 19 to engage. The side of the locking rod 19 near the movable groove 17 is slidably connected to a movable rod 20. The end of the movable rod 20 is fixedly connected to an adjusting block 21. The inner wall of the movable groove 17 has a positioning hole 23 for the movable rod 20 to engage. The outer contour of the adjusting block 21 is provided with anti-slip protrusions, and two anti-slip grooves are formed by these anti-slip protrusions. The outer contour of the adjusting block 21 is also provided with anti-slip protrusions, and anti-slip textures are formed by these anti-slip protrusions.

[0041] When it is necessary to install a calibration sensor or calibration sensor block, fix the calibration sensor or calibration sensor block to be installed on the connecting plate 13, then pull the adjusting block 21 to drive the movable rod 20 to move in the movable slot 17, and then use the movable rod 20 to drive the locking rod 19 to move in the movable slot 18. Then, the locking rod 19 presses the return spring 22, and finally, the movable rod 20 of the locking rod 19 is inserted into the positioning hole 23 by pressing the adjusting block 21. At this time, the operator installs the connecting plate 13 on the fixed plate 12, and contacts the outer contour of the connecting plate 13 with the side of the four fixed blocks 16 near the connecting plate 13 to complete the initial positioning of the connecting plate 13. Then, pull the four adjusting blocks 21 in sequence to adjust the position of the sensor. The segment 21 drives the movable rod 20 out of the positioning hole 23, thereby using the elasticity of the compressed return spring 22 to drive the locking rod 19 to move and engage in the groove on the connecting plate 13, thus locking the connecting plate 13. When the calibration sensor or calibration sensor block is damaged, the movable rod 20 is moved in the movable groove 17 by pulling down the adjusting block 21, and the locking rod 19 on the movable rod 20 is completely moved into the movable groove 18. Then the movable rod 20 is inserted into the positioning hole 23. Then the above operation is repeated for the remaining three locking parts, so that the connecting plate 13 can be removed from the fixed plate 12 for replacement and repair. This increases the efficiency of the staff in disassembling and assembling the calibration sensor and calibration sensor block, and also reduces the maintenance difficulty for the staff.

[0042] Working principle: The first calibration sensor 5, the second calibration sensor 6, and the third calibration sensor 7 are arranged vertically on the cantilever fixed arm 1. The first calibration sensor block 8, the second calibration sensor block 9, and the third calibration sensor block 10 are arranged horizontally on the cantilever telescopic arm 2, corresponding to the height of the first calibration sensor 5, the second calibration sensor 6, and the third calibration sensor 7. A new gear with the same module as the drive gear is added and meshes with the drive gear to detect the moving distance of the cantilever telescopic arm 2 of the ship loader. Then, a PLC controller is placed in the electrical room of the ship loader to receive calibration signals and perform numerical calibration on the telescopic arm positioning encoder.

[0043] During the extension and retraction of the cantilever telescopic arm 2, the calibration sensor block at the same height can trigger the calibration sensor on the cantilever telescopic arm 2 at the corresponding height, and then send the calibration signal to the PLC to calibrate the positioning data of the telescopic arm in real time. At the same time, the calibration sensor and calibration sensor block at the same height are within the safe working range, while the calibration sensor and calibration sensor block at different heights are outside the safe working range. Therefore, the calibration sensor at different heights will not transmit signals to the PLC controller.

[0044] When it is necessary to install a calibration sensor or calibration sensor block, fix the calibration sensor or calibration sensor block to be installed on the connecting plate 13, and then use the fixing bolts 15 to fix it to the cantilever fixed arm 1 or cantilever telescopic arm 2. Pull the adjusting block 21 to drive the movable rod 20 to move in the movable groove 17, and then use the movable rod 20 to drive the locking rod 19 to move in the movable groove 18. Then, the locking rod 19 presses the return spring 22. Finally, the movable rod 20 of the locking rod 19 is inserted into the positioning hole 23 by pressing the adjusting block 21. At this time, the operator installs the connecting plate 13 on the fixed plate 12, and contacts the outer contour of the connecting plate 13 with the side of the four fixed blocks 16 near the connecting plate 13. After initial positioning of the connecting plate 13, pull the four adjusting blocks 21 in sequence. The adjusting blocks 21 drive the movable rod 20 to move out of the positioning hole 23. The elasticity of the return spring 22, when compressed, drives the locking rod 19 to move and engage with the groove on the connecting plate 13, thus locking the connecting plate 13. When the calibration sensor or calibration sensor block is damaged, pull down the adjusting block 21 to move the movable rod 20 in the movable groove 17, and move the locking rod 19 on the movable rod 20 completely into the movable groove 18. Then insert the movable rod 20 into the positioning hole 23. Repeat the above operation on the remaining three locking parts to remove the connecting plate 13 from the fixing plate 12 for replacement and repair.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A telescopic boom positioning device for a ship loader, comprising a cantilever fixed arm (1), wherein a cantilever telescopic arm (2) is disposed inside the cantilever fixed arm (1), a movable wheel (3) is fixedly connected to the bottom of the inner wall of the cantilever fixed arm (1), and guide rails (4) are symmetrically disposed at the bottom of the cantilever telescopic arm (2), characterized in that: The cantilever fixed arm (1) has a first calibration sensor (5) attached to the inner wall near the bottom, a second calibration sensor (6) attached to the top of the inner wall of the cantilever fixed arm (1) near the first calibration sensor (5), and a third calibration sensor (7) attached to the top of the inner wall of the cantilever fixed arm (1) near the second calibration sensor (6). The side of the cantilever telescopic arm (2) near the first calibration sensor (5) is fitted with a first calibration sensor block (8), the side of the cantilever telescopic arm (2) near the second calibration sensor (6) is fitted with a second calibration sensor block (9), and the side of the cantilever telescopic arm (2) near the third calibration sensor (7) is fitted with a third calibration sensor block (10). Locking mechanisms (11) for assembling and disassembling sensors and sensor blocks are provided close to each other on the cantilever fixed arm (1) and the cantilever telescopic arm (2). A positioning encoder is installed at the cantilever telescopic drive gear of the ship loader.

2. The positioning device for a ship loader telescopic boom according to claim 1, characterized in that: The locking mechanism (11) includes a fixing plate (12) disposed on the cantilever fixed arm (1) and the cantilever telescopic arm (2). A connecting plate (13) is snapped onto the surface of the fixing plate (12). Fixing bolts (15) are installed in a circumferential array on the surface of the fixing plate (12). Locking elements are disposed in a circumferential array on the surface of the fixing plate (12).

3. The positioning device for a ship loader telescopic boom according to claim 2, characterized in that: The locking component includes a fixed block (16) arranged in a circumferential array on the surface of the fixed plate (12). The top of the fixed block (16) is provided with a movable groove (17). The inner wall of the movable groove (17) is provided with a moving groove (18). The inner wall of the moving groove (18) is connected to a locking rod (19) for limiting sliding. The inner wall of the moving groove (18) is provided with a return spring (22) that contacts the locking rod (19). The connecting plate (13) is provided with a groove for the locking rod (19) to be engaged.

4. The positioning device for a ship loader telescopic boom according to claim 3, characterized in that: The locking rod (19) is slidably connected to a movable rod (20) on one side near the movable groove (17), and an adjusting block (21) is fixedly connected to the end of the movable rod (20).

5. A positioning device for a ship loader telescopic boom according to claim 3, characterized in that: The inner wall of the movable groove (17) is provided with a positioning hole (23) for the movable rod (20) to be engaged.

6. A positioning device for a ship loader telescopic boom according to claim 4, characterized in that: The outer contour of the adjustment block (21) is provided with anti-slip protrusions, and two anti-slip grooves are formed by the anti-slip protrusions.

7. A positioning device for a ship loader telescopic boom according to claim 4, characterized in that: The outer contour of the adjustment block (21) is provided with anti-slip protrusions and anti-slip textures are formed by the anti-slip protrusions.

8. A positioning device for a ship loader telescopic boom according to claim 4, characterized in that: A through hole (14) is provided in the middle of the fixing plate (12) and the connecting plate (13).

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