Proximity switch detection signal stabilizing device
By designing a device that fixes the proximity switch and the limit plate in the device, the signal instability caused by the shaking of the hoist balance beam spreader is solved, and the stability and accuracy of the equipment position feedback signal is achieved.
Patent Information
- Application Number
- CN202421611601.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-09
AI Technical Summary
During the lifting process, the proximity switch detection signal is unstable and even damaged, affecting production due to shaking.
A proximity switch detection signal stabilization device is designed to fix the proximity switch and the limit plate in the device. Through the structures such as pins, limit baffles and spacers, the relative position of the proximity switch and the limit plate is fixed, and the distance is controlled within the detection range.
It effectively avoids the problems of unstable limit signal, loss or damage to the proximity switch caused by component shaking, and ensures the stability and accuracy of the equipment position feedback signal.
Smart Images
Figure CN223024401U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a proximity switch detection signal stabilizing device, belonging to the technical field of equipment position signal detection systems. Background Art
[0002] The elevator is an important equipment for CDQ. Its main function is to lift the coke can full of red coke to the top of the CDQ furnace, load the red coke into the CDQ furnace through the loading device, and then lift the empty coke can to the ground coke can car. The hoisting part of the elevator is mainly composed of drum, reducer and motor, wire rope, hook and balance beam hoisting device, etc., with a rated lifting weight of 97t and a lifting height of 39.85m. Vertical rails are set on both sides of the balance beam hoist to control its lifting trajectory, with a track gauge of 15.5m.
[0003] At present, the position signal triggering during the coke tank lifting process is realized by the hoist balance beam hoist approaching the proximity switch. Due to the heavy lifting weight, high height, and wide vertical rail gauge, the coke tank and the balance beam hoist will inevitably produce a small range of shaking during the lifting operation. The maximum detection distance of the on-site proximity switch is 25mm, and the value of the stable detection distance is 70-80% of the maximum detection distance, about 17.5-20mm. During the lifting operation, the maximum shaking of the coke tank and the balance beam hoist is 40-50mm, which exceeds the detection range of the proximity switch. When the limit baffle of the balance beam hoist component passes the detection point, sometimes the signal cannot be detected, and the proximity switch is often damaged, and the lifting operation status cannot be timely and correctly grasped. Inaccurate signal feedback leads to misjudgment and even chain shutdown, affecting production. Summary of the invention
[0004] The utility model aims to provide a proximity switch detection signal stabilization device, which fixes the proximity switch and the limit plate in the device, fixes their relative positions, and controls the distance within the detection distance range, so that all equipment position detection feedback signals such as "the triggering of the equipment operation position feedback signal is realized by the equipment active component body approaching the proximity switch fixed on the equipment inactive component" are not affected by the change of component position, and completely avoids the occurrence of problems such as unstable limit signal, loss, and even damage to the proximity switch caused by shaking during component operation, thereby solving the above-mentioned problems existing in the background technology.
[0005] The technical solution of the utility model is: a proximity switch detection signal stabilizing device, which includes a proximity switch, a pin shaft, a limit baffle, a stop block, a bracket, a base and a spacer. The proximity switch and the pin shaft are installed on the bracket and the base through nuts; the limit baffle is installed on the pin shaft and rotates around the center of the pin shaft; the stop block is fixed on the bracket to support the limit baffle so that the limit baffle can only move in the fixed direction required by the site; the spacer is installed on the pin shaft to limit the distance between the limit baffle and the sensing surface of the proximity switch within the sensing distance range of the proximity switch; before the equipment component runs in place, it contacts the limit baffle and drives the limit baffle to rotate.
[0006] The tail of the pin shaft is a threaded and shoulder structure. After the limit baffle and the spacer are installed on the pin shaft, the pin shaft is installed and fastened on the bracket through a nut.
[0007] A clearance fit is provided between the limit baffle, the spacer and the pin shaft, and a clearance of 1-2 mm is provided between the spacer and the limit baffle.
[0008] After the limit baffle is installed on the pin shaft, it is an eccentric structure. The center of gravity of the limit baffle does not coincide with the axis of the pin shaft, and the relative position between its center of gravity position and the stop block matches the running direction of the equipment component and meets the setting of the limit baffle moving towards the proximity switch.
[0009] When the feedback signal of the proximity switch is the upper limit, the center of gravity position of the limit baffle is on the right side of the center position of the pin shaft, and the stop block is at the lower right or upper left; when the feedback signal of the proximity switch is the lower limit, the center of gravity position of the limit baffle is on the left side of the center position of the pin shaft, and the stop block is at the upper right or lower left.
[0010] When the equipment component contacts and drives the limit baffle to move, it is a point-surface or surface-surface sliding contact, and the contact range exceeds the maximum value of the equipment component shaking.
[0011] Both the bracket and the base are made of 6-12 mm steel plates. The bracket is welded to the base, and both sides are welded and reinforced by rib plates, and the rib plates are structural reinforcing ribs.
[0012] The base is installed and fixed on the non-movable structure of the equipment.
[0013] The beneficial effect of the utility model is: by fixing the proximity switch and the limit plate into the device, their relative positions are fixed, and the distance is controlled within the detection distance range, so that the position detection feedback signals of all devices similar to "the triggering of the equipment operation position feedback signal is realized by the equipment moving component body approaching the proximity switch fixed on the equipment non-moving component" are not affected by the position change of the component, and completely avoid problems such as unstable, lost or even damaged proximity switch caused by the shaking of the component during operation. Description of the Drawings
[0014] Figure 1 is the front view of the present utility model;
[0015] Figure 2 is the top view of the present utility model;
[0016] In the figure: proximity switch 1, pin shaft 2, limit baffle 3, stop block 4, bracket 5, base 6, spacer sleeve 7, nut 8, rib plate 9, equipment component 10, running to the limit point 11. Specific embodiments
[0017] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments. Obviously, the described embodiments are only a small part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] A proximity switch detection signal stability device includes a proximity switch 1, a pin shaft 2, a limit baffle 3, a stop block 4, a bracket 5, a base 6 and a spacer sleeve 7. The proximity switch 1 and the pin shaft 2 are installed on the bracket 5 and the base 6 through a nut 8; the limit baffle 3 is installed on the pin shaft 2 and the limit baffle 3 rotates around the center of the pin shaft 2; the stop block 4 is fixed on the bracket 5 to support the limit baffle 3 so that the limit baffle 3 can only move in the fixed direction required by the site; the spacer sleeve 7 is installed on the pin shaft 2 to limit the distance between the limit baffle 3 and the sensing surface of the proximity switch 1 within the proximity switch sensing distance range; the equipment component 10 contacts the limit baffle 3 and drives the limit baffle 3 to rotate before running in place.
[0019] The tail of the pin shaft 2 has a threaded and shoulder structure. After the limit baffle 3 and the spacer sleeve 7 are first installed on the pin shaft 2, the pin shaft 2 is installed and fastened on the bracket 5 through a nut 8.
[0020] A clearance fit is provided between the limit baffle 3, the spacer sleeve 7 and the pin shaft 2, and a clearance of 1-2 mm is provided between the spacer sleeve 7 and the limit baffle 3.
[0021] After the limit baffle 3 is installed on the pin shaft 2, it is an eccentric structure. The center of gravity of the limit baffle 3 does not coincide with the axis of the pin shaft 2, and the relative position between its center of gravity position and the stop block 4 matches the running direction of the equipment component and meets the setting of the limit baffle 3 moving towards the proximity switch 1.
[0022] When the feedback signal of the proximity switch 1 is the upper limit, the center of gravity of the limit baffle 3 is on the right side of the center position of the pin shaft 2, and the position of the stopper 4 is on the lower right side or on the upper left side; when the feedback signal of the proximity switch 1 is the lower limit, the center of gravity of the limit baffle 3 is on the left side of the center position of the pin shaft 2, and the position of the stopper 4 is on the upper right side or on the lower left side.
[0023] When the equipment component 10 contacts and drives the limit baffle 3 to move, it is a point-to-surface or surface-to-surface sliding contact, and the contact range exceeds the maximum value of the shaking of the equipment component.
[0024] The bracket 5 and the base 6 are both made of 6-12 mm steel plates. The bracket 5 is welded to the base 6, and both sides are welded and reinforced by ribs 9, which are structural reinforcement ribs.
[0025] The base 6 is installed and fixed on the inactive structure of the equipment.
[0026] In practical applications, the ribs 9 are structural reinforcement ribs, and the bracket 5 and the base 6 are both made of 6-12 mm steel plates. After the mounting holes of the proximity switch 1 and the mounting holes of the pin shaft 2 are processed, the bracket 5 is welded to the base 6, and the ribs 9 are used for welding and reinforcement on both sides.
[0027] The proximity switch 1 and the pin shaft 2 are installed on the bracket 5 and the base 6 through the nut 8. The tail of the pin shaft 2 is a threaded and shoulder structure. After the limit baffle 3 and the spacer 7 are first installed on the pin shaft 2, the pin shaft 2 is installed and fastened to the bracket 5 with the nut 8. The limit baffle 3 rotates around the center of the pin shaft 2, and the spacer 7 limits the distance between the limit baffle 3 and the sensing surface of the proximity switch 1 within the sensing distance range of the proximity switch; the limit baffle 3, the spacer 7 and the pin shaft 2 are clearance-fitted and can rotate flexibly around the pin shaft 2; there is a 1-2mm gap between the spacer 7 and the limit baffle 3, which ensures that the limit baffle 3 does not interfere with each other when rotating between the pin shaft end cap and the spacer 7, thereby ensuring its flexibility and movement margin.
[0028] The stopper 4 is fixed on the bracket 5, holding the limit baffle 3 so that the limit baffle 3 can only move in the fixed direction required on site. After the limit baffle 3 is installed on the pin shaft 2, it is an eccentric structure, and the center of gravity of the limit baffle 3 does not coincide with the axis of the pin shaft 2. The relative position of its center of gravity and the stopper 4 is determined according to the running direction of the equipment components and meets the setting of the limit baffle 3 moving in the direction of the proximity switch 1. For example, when the feedback signal of the proximity switch 1 is the upper limit, the center of gravity of the limit baffle 3 is on the right side of the center of the pin shaft 2, and the stopper 4 is located on the lower right side or on the upper left side; when the feedback signal of the proximity switch 1 is the lower limit, the center of gravity of the limit baffle 3 is on the left side of the center of the pin shaft 2, and the stopper 4 is located on the upper right side or on the lower left side.
[0029] Before the equipment component 10 moves into position, it contacts the limit baffle 3 and drives the limit baffle 3 to rotate. When the system receives the detection signal of the proximity switch 1, it means that the equipment has moved into position without any abnormality and is running according to the set process program. When the equipment component 10 contacts and drives the limit baffle 3 to move, it is a point-to-surface or surface-to-surface sliding contact, and the contact range exceeds the maximum value of the shaking of the equipment component.
[0030] After the base 6 is welded and assembled, it is installed and fixed on the inactive structure of the equipment according to the site conditions.
[0031] The installation position of the utility model can be determined according to the on-site conditions, and is set in accordance with the precise detection to meet production needs, facilitate inspection and maintenance, and not affect the operation of other equipment. The contact form between the limit baffle and the equipment component can be adjusted according to the site to ensure that the contact is point-to-surface contact, and the contact range exceeds the maximum value of the shaking of the equipment component. This ensures that the feedback signal is not affected by the change of the component position, and completely avoids the occurrence of problems such as unstable limit signals, loss, and even damage to the proximity switch caused by the shaking of the component during operation.
Claims
1. A proximity switch detection signal stabilization device, characterized in that: The device comprises a proximity switch (1), a pin shaft (2), a limit baffle (3), a stopper (4), a bracket (5), a base (6) and a spacer (7), wherein the proximity switch (1) and the pin shaft (2) are mounted on the bracket (5) and the base (6) via a nut (8); the limit baffle (3) is mounted on the pin shaft (2), and the limit baffle (3) rotates around the center of the pin shaft (2); the stopper (4) is fixed on the bracket (5), and supports the limit baffle (3), so that the limit baffle (3) can only move in a fixed direction required on site; the spacer (7) is mounted on the pin shaft (2), so that the distance between the limit baffle (3) and the sensing surface of the proximity switch (1) is limited within the sensing distance range of the proximity switch; and the equipment component (10) contacts the limit baffle (3) before running into position and drives the limit baffle (3) to rotate.
2. A proximity switch detection signal stabilization device according to claim 1, characterized in that: The tail of the pin shaft (2) is a threaded and shoulder structure. The limit baffle (3) and the spacer (7) are first installed on the pin shaft (2), and then the pin shaft (2) is installed and fastened on the bracket (5) through a nut (8).
3. The proximity switch detection signal stabilization device according to claim 1, characterized in that: The limit baffle (3), the spacer (7) and the pin shaft (2) are clearance-matched, and a clearance of 1-2 mm is provided between the spacer (7) and the limit baffle (3).
4. The proximity switch detection signal stabilization device according to claim 1, characterized in that: After the limit baffle (3) is installed on the pin shaft (2), it has an eccentric structure. The center of gravity of the limit baffle (3) does not coincide with the axis of the pin shaft (2). The relative position of its center of gravity and the stopper (4) matches the running direction of the equipment component and satisfies the setting that the limit baffle (3) moves in the direction of the proximity switch (1).
5. A proximity switch detection signal stabilization device according to claim 4, characterized in that: When the feedback signal of the proximity switch (1) is an upper limit, the center of gravity of the limit baffle (3) is on the right side of the center position of the pin shaft (2), and the position of the stopper (4) is on the lower right side or on the upper left side; when the feedback signal of the proximity switch (1) is a lower limit, the center of gravity of the limit baffle (3) is on the left side of the center position of the pin shaft (2), and the position of the stopper (4) is on the upper right side or on the lower left side.
6. The proximity switch detection signal stabilization device according to claim 1, characterized in that: When the equipment component (10) contacts and drives the limit baffle (3) to move, it is a point-to-surface or surface-to-surface sliding contact, and the contact range exceeds the maximum value of the shaking of the equipment component.
7. The proximity switch detection signal stabilization device according to claim 1, characterized in that: The bracket (5) and the base (6) are both made of 6-12 mm steel plates. The bracket (5) is welded to the base (6), and both sides are welded and reinforced by rib plates (9), which are structural reinforcement ribs.
8. The proximity switch detection signal stabilization device according to claim 1, characterized in that: The base (6) is installed and fixed on the inactive structure of the equipment.