Plate chain line tail anti-collision detection device

Abstract

The utility model belongs to the technical field of conveyors, and particularly relates to a plate chain line tail anti-collision detection device which comprises a plate chain line, a lifting frame arranged above the plate chain line, a sliding rail connected below the lifting frame, a plurality of sliding seats installed on the inner side of the sliding rail in a sliding mode, and laser reflection switches arranged on one sides of the sliding seats and penetrating through the sliding seats. An adjusting mechanism connected with the sliding rail is arranged in the sliding seat; the adjusting mechanism comprises a fixing plate, cavities are symmetrically formed in the sliding base, the fixing plate is fixedly installed in the cavities, supporting rods are symmetrically arranged above the fixing plate, the tops of the two supporting rods are connected with a push plate, the top of the push plate is connected with a rack, and the rack penetrates through the top face of the sliding base. The fixed rod can be pushed to drive the two push rods to move, the transmission driving rack moves into the cavity, the sliding seat is dragged to drive the connected laser reflection switch to move, adjustment can be carried out according to the length specification of a detected automobile, after the fixed rod moves to a proper position, force applied to the fixed rod is released, the rack can be meshed with the tooth groove, and the position of the sliding seat is limited.

Description

Technical Field

[0001] This utility model relates to the field of conveyor technology, and in particular to a collision detection device for the tail end of a plate chain. Background Technology

[0002] As a crucial conveying equipment in industrial production, conveyor belts play an irreplaceable role in material handling and product assembly. Taking automobile production lines as an example, numerous conveyor belts are used for car transport. During production, workers drive cars to the conveyor belt entrance and stop them. The conveyor belt then moves the cars forward. Simultaneously, workers around the conveyor belt open the car doors and perform a series of complex operations. To improve production efficiency and manufacture as many cars as possible, workers continuously drive cars onto the conveyor belt. However, because cars rely on manual braking when stopping on the conveyor belt, the braking position of each car varies, resulting in inconsistent safe distances between cars. Situations where cars are too close to each other frequently occur. When a car reaches the end of the conveyor belt, if the car in front fails to move away in time, the conveyor belt will push the car to its limit and stop, while the car behind continues to move forward, potentially colliding with the car in front. To prevent such accidents, safety switches are typically installed at the end of the conveyor belt.

[0003] Currently, this type of safety protection is usually achieved using different types of switches, such as laser reflective switches. The switch inputs a signal to the PLC module, and the PLC controller accurately determines the position of the car based on pre-programmed logic, thereby achieving the safety protection function. However, the existing switch installation methods have significant drawbacks. They are mostly fixed with bolts and screws, which means that the switch can only be used to detect cars of a specific length. If it is necessary to detect cars of different lengths, the switch must be disassembled to adjust its position. This installation method is cumbersome and difficult to adjust quickly, which greatly reduces the practicality of the equipment and makes it impossible to flexibly adapt to diverse production needs. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A plate chain wire tail anti-collision detection device includes a plate chain wire, a lifting frame is provided above the plate chain wire, a slide rail is connected below the lifting frame, an audible and visual alarm is provided at one end of the slide rail, a plurality of slide seats are slidably installed inside the slide rail, and a laser reflection switch is provided on one side of the slide seat, with the lower end of the laser reflection switch located below the slide rail. An adjustment mechanism connected to the slide rail is provided inside the slide seat, and the laser reflection switch is connected to the slide seat through a fixing component.

[0007] The adjustment mechanism includes a fixed plate, and the slide has symmetrically opened chambers. The fixed plate is fixedly installed in the chambers. Support rods are symmetrically arranged above the fixed plate. Push plates are connected to the top of the two support rods. A rack is connected to the top of the push plate and passes through the top surface of the slide.

[0008] As an improved technical solution, the adjustment mechanism includes a spring, which is sleeved on the outside of the support rod and located between the fixed plate and the push plate. The lower end of the support rod has a trigger groove below the fixed plate. A push rod is slidably installed in the trigger groove, and one end of the push rod extends to the outside of the slide block. The bottom of the push rod has a squeezing block adapted to the trigger groove on one side of the support rod. The inner top wall of the slide block has a number of toothed grooves adapted to the rack.

[0009] As an improved technical solution, the two push rods are connected at one end outside the slide block by a fixed rod, and a stop block is sleeved on the outside of the push rod, and the stop block is located in the cavity near the fixed rod.

[0010] As an improved technical solution, a support rod is fixedly installed on the inner wall of the chamber away from the stop block, and one end of the support rod is inserted into the connecting groove opened at one end of the push rod, and a second spring is connected to one end of the support rod, the second spring being located in the connecting groove.

[0011] As an improved technical solution, the extrusion block has a right-angled trapezoidal structure, the distance between the upper and lower horizontal planes in the trigger groove is greater than the combined height of the push rod and the extrusion block, the inner wall of the slide block is convex in shape, and a sliding groove is provided at the bottom of the slide block.

[0012] As an improved technical solution, the fixing component includes a retaining ring, and the middle position of the slide has an installation groove, which is a cross-shaped cylindrical structure. The retaining ring is slidably installed in the lower part of the installation groove. A spring is connected to the bottom of the retaining ring. The laser reflection switch is located inside the retaining ring. A fixing ring is sleeved on the outside of the laser reflection switch above the retaining ring. A locking block is symmetrically arranged on the outside of the fixing ring. The upper inner wall of the retaining ring has symmetrically arranged rail grooves that fit the locking blocks. The top of the horizontal part of the rail groove has a locking groove that fits the locking block.

[0013] As an improved technical solution, the track groove is L-shaped, the height of the slot is less than the height of the block, the inner wall of the lower opening of the retaining ring is provided with a rubber ring, and the rubber ring is sleeved on the outside of the laser reflection switch, and the outer wall of the block is provided with a rubber layer.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. This utility model can drive two push rods to move by pushing the fixed rod, so that the extrusion block squeezes and pushes the support rod downward, thereby driving the rack to move into the cavity. Then, the slide can be dragged to drive the connected laser reflection switch to slide left and right. It can be adjusted according to the length and size of the car being detected. After moving to the appropriate position, the force applied to the fixed rod is released, so that the rack and tooth groove can mesh, thus limiting the position of the slide. It is convenient to use and highly practical.

[0016] 2. This utility model allows for convenient and quick assembly and disassembly of the laser reflection switch via a fixing component, facilitating its disassembly, inspection, maintenance, or replacement.

[0017] 3. The rubber ring, rubber pad, and spring of this utility model can buffer the force of vibration that the laser reflective switch is subjected to, and avoid damage to the internal components of the laser reflective switch. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of a plate chain wire tail anti-collision detection device according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure between the slide rail and the slide base of the anti-collision detection device for the tail of a plate chain.

[0021] Figure 3 This is a partial side sectional view of the slide of the anti-collision detection device for the tail of a plate chain wire according to the present invention.

[0022] Figure 4 This is a schematic diagram of the main view of the sliding base of the anti-collision detection device for the tail of a plate chain wire according to the present invention.

[0023] Figure 5 This is a schematic diagram of the adjustment mechanism of the anti-collision detection device for the tail of a plate chain wire according to the present invention.

[0024] Figure 6 This is a schematic diagram of the laser reflection switch and fixing ring of the anti-collision detection device for the tail of a plate chain wire according to the present invention.

[0025] Figure 7 This utility model relates to a collision prevention detection device for the tail of a plate chain. Figure 3 A magnified structural diagram of A in the diagram.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Plate chain; 2. Lifting frame; 3. Slide rail; 4. Audible and visual alarm; 5. Slide base; 6. Laser reflection switch; 7. Fixing plate; 8. Support rod; 9. Push plate; 10. Rack; 11. Spring 1; 12. Trigger groove; 13. Push rod; 14. Extrusion block; 15. Stop block; 16. Fixing rod; 17. Support rod; 18. Spring 2; 19. Tooth groove; 20. Retaining ring; 21. Spring 3; 22. Rubber ring; 23. Fixing ring; 24. Locking block; 25. Mounting groove; 26. Rail groove; 27. Locking groove; 28. Chamber. Detailed Implementation

[0028] 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.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0031] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] like Figure 1 - Figure 6As shown in the figure, this embodiment provides a plate chain tail anti-collision detection device, including a plate chain 1, a lifting frame 2 above the plate chain 1, a slide rail 3 connected below the lifting frame 2, an audible and visual alarm 4 at one end of the slide rail 3, several slide seats 5 slidably installed inside the slide rail 3, and a laser reflection switch 6 penetrating the slide seat 5 on one side of the slide seat 5. In this example, there are 3 laser reflection switches 6; and the lower end of the laser reflection switch 6 is located below the slide rail 3. An adjustment mechanism connected to the slide rail 3 is provided inside the slide seat 5. The laser reflection switch 6 is connected to the slide seat 5 through a fixing component. The adjustment mechanism includes a fixing plate 7. A cavity 28 is symmetrically opened inside the slide seat 5. The fixing plate 7 is fixedly installed in the cavity 28. Support rods 8 are symmetrically arranged above the fixing plate 7. Push plates 9 are connected to the top of the two support rods 8. A rack 10 is connected to the top of the push plate 9, and the rack 10 penetrates the top surface of the slide seat 5.

[0033] In this example, the adjustment mechanism includes a spring 11, which is sleeved on the outside of the support rod 8 and located between the fixed plate 7 and the push plate 9. The lower end of the support rod 8 has a trigger groove 12 below the fixed plate 7. A push rod 13 is slidably installed in the trigger groove 12, and one end of the push rod 13 extends to the outside of the slide block 5. The bottom of the push rod 13 has a squeezing block 14 adapted to the trigger groove 12 on one side of the support rod 8. The inner top wall of the slide block 5 has several toothed grooves 19 adapted to the rack 10, so that by pushing the fixed rod 16, the rack 10 can be driven to separate from the toothed grooves 19, and the slide block 5 can be dragged to drive the laser reflection switch 6 to slide left and right to adjust its position, so that it can be used in cars of different sizes and lengths, thus expanding its application range.

[0034] In this example, the two push rods 13 are connected at one end outside the slide block 5 by a fixed rod 16. A stop block 15 is sleeved on the outside of the push rod 13, and the stop block 15 is located in the chamber 28 near the fixed rod 16 so as to drive the two push rods 13 to move synchronously. The stop block 15 can limit the position of the push rod 13.

[0035] In this example, a support rod 17 is fixedly installed on the inner wall of the chamber 28 away from the stop block 15. One end of the support rod 17 is inserted into the connecting groove opened at one end of the push rod 13, and a spring 18 is connected to one end of the support rod 17. The spring 18 is located in the connecting groove to support the push rod 13, improve its stability, and provide power for the push rod 13 to reset.

[0036] In this example, the extrusion block 14 is a right-angled trapezoidal structure. The distance between the upper and lower horizontal planes in the trigger groove 12 is greater than the combined height of the push rod 13 and the extrusion block 14. The inner wall of the slide block 5 is convex in shape, and a sliding groove is provided at the bottom of the slide block 5 so that the support rod 8 can be pushed down by the extrusion block 14.

[0037] like Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown in the example, the fixing component includes a retaining ring 20, a mounting groove 25 is provided in the middle of the slide block 5, and the mounting groove 25 is a cross-shaped cylindrical structure. The retaining ring 20 is slidably installed in the lower part of the mounting groove 25. A spring 3 21 is connected to the bottom of the retaining ring 20. The laser reflection switch 6 is located inside the retaining ring 20. A fixing ring 23 is sleeved on the outside of the laser reflection switch 6 above the retaining ring 20. A locking block 24 is symmetrically provided on the outside of the fixing ring 23. A rail groove 26 adapted to the locking block 24 is symmetrically provided on the upper inner wall of the retaining ring 20. A locking groove 27 adapted to the locking block 24 is provided at the top of the horizontal part of the rail groove 26, so as to facilitate the disassembly and assembly of the laser reflection switch 6, and to facilitate its disassembly, inspection or maintenance replacement.

[0038] In this example, the track groove 26 is L-shaped, the height of the slot 27 is less than the height of the block 24, the inner wall of the lower opening of the retaining ring 20 is provided with a rubber ring 22, and the rubber ring 22 is sleeved on the outside of the laser reflection switch 6. The outer wall of the block 24 is provided with a rubber layer to protect the laser reflection switch 6 and play a buffer protection role.

[0039] In use, pushing the fixed rod 16 will push the two push rods 13, causing them to move into the chamber 28. This will cause the push rods 13 to move the extrusion block 14 synchronously, so that the inclined surface on the extrusion block 14 fits into the inclined surface in the trigger groove 12, gradually squeezing and pushing the support rod 8 to move the push plate 9 and rack 10 downward, causing the rack 10 to separate from the tooth groove 19. At the same time, the push plate 9 will squeeze the first spring 11, and the push rod 13 will also cooperate with the support rod 17 to squeeze the second spring 18. Then, the slide block 5 can be dragged to move the connected laser reflection switch 6 left and right within the slide rail 3. After sliding it to the appropriate position, the force applied to the fixed rod 16 is released, causing the push plate 9 to return to its original position and move upward under the elastic force of spring 11. This pushes the rack 10 back to its original position and engages with the tooth groove 19. At the same time, the trigger groove 12 also pushes the squeeze block 14 to drive the push rod 13 back to its original position, and spring 18 pushes the push rod 13 back to its original position until the stop block 15 is in contact with the inner wall of one side of the chamber 28. This allows the push rod 13 to return to its initial position, completing the limiting and fixing of the slide block 5. This allows for quick adjustment of the position of the laser reflection switch 6 to adapt to cars of different sizes and lengths, thus broadening its application range. When needed... When disassembling, maintaining, or repairing the laser reflector switch 6, push the laser reflector switch 6 to move the fixing ring 23 and the locking block 24 downwards, causing the locking block 24 to move out of the slot 27. The fixing ring 23 will then push the retaining ring 20 to compress the spring 3 21. Afterwards, rotate the laser reflector switch 6 to rotate the fixing ring 23 and the locking block 24 within the rail groove 26 until the locking block 24 moves to the position corresponding to the opening of the vertical part of the rail groove 26. Then, the laser reflector switch 6 can be moved upwards to disassemble and remove it for maintenance. When installing the laser reflector switch 6, insert the lower end of the laser reflector switch 6 into the mounting slot 25 and slide the locking block 24. Insert the switch 24 into the track groove 26 until it reaches the bottom. The fixing ring 23 pushes the retaining ring 20 downwards, compressing the spring 21. This moves the upper end of the locking block 24 to the corresponding horizontal section of the track groove 26. Rotate the laser reflector switch 6 to move the locking block 24 into the horizontal section of the track groove 26, aligning it with the slot 27. Release the downward pushing force on the laser reflector switch 6. The spring force of the spring 21 will then drive the locking block 24 to reset and engage in the slot 27, completing the installation and fixing of the laser reflector switch 6. This facilitates easy disassembly, maintenance, repair, or replacement of the laser reflector switch 6, enhancing its practicality.

[0040] Three laser reflective switches 6 are arranged on the slide rail 3. In addition, it is necessary to measure the worker's driving speed. When the first and third laser reflective switches 6 detect the signal at the same time, the timing starts and ends when the first and third laser reflective switches 6 no longer detect the signal at the same time. How many seconds is required?

[0041] The first laser reflector switch 6 is used to detect the rear of the vehicle, the third laser reflector switch 6 is used to detect the front of the vehicle, and the second laser reflector switch 6 is used to detect the roof of the vehicle.

[0042] Action A: When the conveyor belt runs from left to right, the first laser reflector switch 6 detects the vehicle signal on the conveyor belt, while the second and third laser reflector switches 6 do not detect the signal. The conveyor belt continues to run, and the audible and visual alarm 4 only flashes to remind the driver to prepare to leave.

[0043] Action B: The conveyor belt continues to move forward based on Action A. The first and second laser reflector switches 6 detect the vehicle signal on the conveyor belt, while the third laser reflector switch 6 does not detect a signal. At this time, timer S begins. If the vehicle leaves normally, the signals of the first and second laser reflector switches 6 should disappear after time S expires. If the signals of the first and second laser reflector switches 6 do not disappear, it means that the vehicle has not left normally. The audible and visual alarm 4 will flash and sound to indicate this, and the conveyor belt needs to stop running. Afterward, the conveyor belt can only continue running after the worker has completely driven the vehicle off the conveyor belt and all three laser reflector switches 6 no longer detect a signal.

[0044] Action C: When the first laser reflection switch 6 malfunctions and cannot detect a signal, the second and third laser reflection switches 6 detect the car signal on the chain. At this time, the timer S starts, which is the same as the operation of Action B.

[0045] Action D: When the second laser reflector switch 6 malfunctions and cannot detect a signal, the second and third laser reflector switches 6 detect the car signal on the chain. This is an abnormal situation and the chain needs to be stopped immediately. The flashing and sound alarm 4 will provide a warning. The chain can only continue to run after the maintenance personnel confirm the situation.

[0046] Action E: When the third laser reflector switch 6 malfunctions and cannot detect a signal, the first and second laser reflector switches 6 detect the car signal on the chain and start timing S. When S expires, the vehicle will definitely pass the third laser reflector switch 6 during its exit process. If the third laser reflector switch 6 does not detect a signal, it is considered malfunctioning and the chain needs to be stopped immediately. The flashing and sound of the audible and visual alarm 4 will provide a warning. The chain can only continue to operate after the maintenance personnel confirm the warning.

[0047] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A plate chain wire tail anti-collision detection device, comprising a plate chain wire (1), characterized in that: The plate chain line (1) is provided with a lifting frame (2) above, the lifting frame (2) is connected with the slide rail (3) below, the slide rail (3) is provided with the audible and visual alarm (4) on one end, the slide rail (3) is slidably installed with a plurality of sliding seats (5) on the inner side, and the sliding seat (5) is provided with a laser reflection switch (6) penetrating through the sliding seat (5) on one side, and the lower end of the laser reflection switch (6) is below the slide rail (3), the sliding seat (5) is provided with an adjusting mechanism connected with the slide rail (3), and the laser reflection switch (6) is connected with the sliding seat (5) through the fixing assembly; The adjusting mechanism comprises a fixed plate (7), the sliding seat (5) is symmetrically provided with a cavity (28) in the sliding seat (5), the fixed plate (7) is fixedly installed in the cavity (28), the fixed plate (7) is symmetrically provided with a supporting rod (8) above, the supporting rod (8) is connected with a push plate (9) on the top, the push plate (9) is connected with a rack (10) on the top, and the rack (10) penetrates through the top surface of the sliding seat (5).

2. A chain and flight conveyor as claimed in claim 1, wherein: The adjusting mechanism comprises a spring (11), the spring (11) is sleeved on the outer side of the supporting rod (8), and the spring (11) is located between the fixed plate (7) and the push plate (9), the supporting rod (8) is provided with a trigger groove (12) below the fixed plate (7), the trigger groove (12) is slidably installed with a push rod (13), and one end of the push rod (13) extends to the outer side of the sliding seat (5), the push rod (13) is provided with a pressing block (14) on the bottom on one side of the supporting rod (8), and the pressing block (14) is matched with the trigger groove (12), the sliding seat (5) is symmetrically provided with a plurality of tooth grooves (19) matched with the rack (10) on the top wall.

3. A chain and flight conveyor as claimed in claim 2, wherein: The two push rods (13) located on one end of the sliding seat (5) are connected by a fixing rod (16), the push rod (13) is sleeved with a stop block (15) on the outer side, and the stop block (15) is located on one side of the cavity (28) close to the fixing rod (16).

4. A chain and flight conveyor as claimed in claim 3, wherein: The cavity (28) is fixedly installed with a supporting rod (17) on the inner wall away from the stop block (15), one end of the supporting rod (17) is inserted into the connecting groove on one end of the push rod (13), and one end of the supporting rod (17) is connected with a spring (18), and the spring (18) is located in the connecting groove.

5. A chain and flight conveyor as defined in claim 4, wherein: The pressing block (14) is a right trapezoidal structure, the distance between the upper and lower horizontal surfaces in the trigger groove (12) is greater than the combined height of the push rod (13) and the pressing block (14), the inner wall surface of the sliding seat (5) is combined in a convex shape, and the sliding groove is formed in the bottom of the sliding seat (5).

6. A chain and flight conveyor as defined in claim 2 wherein: The fixed assembly includes a blocking ring (20), the middle position of the sliding seat (5) is provided with a mounting groove (25), the mounting groove (25) is a cross-shaped cylindrical structure, the blocking ring (20) is slidably installed in the lower part of the mounting groove (25), the bottom of the blocking ring (20) is connected with a spring three (21), the laser reflection switch (6) is located on the inner side of the blocking ring (20), the outer side of the laser reflection switch (6) is sleeved with a fixed ring (23) above the blocking ring (20), the outer side of the fixed ring (23) is symmetrically provided with a clamping block (24), the inner wall of the upper part of the blocking ring (20) is symmetrically provided with a rail groove (26) matched with the clamping block (24), and the horizontal part of the rail groove (26) is provided with a clamping groove (27) matched with the clamping block (24) on the inner top.

7. A chain and flight conveyor as defined in claim 6 wherein: The rail groove (26) is L-shaped, the height of the clamping groove (27) is less than the height of the clamping block (24), the inner wall of the opening of the lower end of the blocking ring (20) is provided with a rubber ring (22), the rubber ring (22) is sleeved on the outer side of the laser reflection switch (6), and the outer wall of the clamping block (24) is provided with a rubber layer.

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