A chain breakage protection device for a drag chain drive system

Abstract

The utility model belongs to the field of accumulation and release chain material conveying safety technology, concretely relates to a kind of chain breakage protection device for accumulation and release chain drive system, including truss, drive chain is equipped on the truss, first mounting bracket is equipped on the truss, sprocket is rotatably connected on the first mounting bracket, the sprocket is engaged with drive chain, second mounting bracket is also equipped on the truss, pulse switch is equipped on the second mounting bracket, the tooth part of sprocket is installed opposite the pulse switch.The utility model improves the real-time and reliability of chain breakage monitoring, realizes the quick response after chain breakage.

Description

Technical Field

[0001] This utility model belongs to the field of safety technology for material conveying in accumulation chains, and specifically relates to a chain breakage protection device for an accumulation chain drive system. Background Technology

[0002] Common mechanical chain breakage protection devices, such as existing ones, mostly use mechanical lever-type limit switches: when the chain breaks and sags, the lever is activated to stop the machine. Existing technology has the following problems: delayed response, requiring significant chain sag to trigger, and inability to detect initial breakage; high false trigger rate, with equipment vibration easily causing false triggering of the lever; frequent maintenance, as mechanical parts are prone to wear and require periodic replacement. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a chain breakage protection device for an accumulation chain drive system, which improves the real-time performance and reliability of chain breakage monitoring and enables rapid response after chain breakage.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a chain breakage protection device for an accumulation chain drive system, comprising a truss, a drive chain on the truss, a first mounting bracket on the truss, a sprocket rotatably connected to the first mounting bracket, the sprocket meshing with the drive chain, and a second mounting bracket on the truss, a pulse switch on the second mounting bracket, the pulse switch being mounted directly opposite the tooth portion of the sprocket.

[0005] As a further embodiment of this utility model: a fixing rod is installed on the first mounting bracket, and a bearing is sleeved on the fixing rod, the bearing being installed in the shaft hole of the sprocket.

[0006] As a further embodiment of this utility model: one end of the fixing rod is connected to the first mounting bracket by a thread, and a positioning sleeve is sleeved in the middle. The bearing is sleeved on the positioning sleeve. A limiting ring is fixed at the end of the positioning sleeve away from the first mounting bracket. A cross partition is also provided on the limiting ring. The cross partition is located between the pulse switch and the sprocket. The end of the pulse switch is directly opposite the tooth part of the sprocket through the gap of the cross partition.

[0007] As a further improvement of this utility model, a limiting sleeve is provided between the sprocket and the first mounting bracket.

[0008] As a further embodiment of this utility model: the second mounting bracket is provided with a support, the support has a strip-shaped hole, and the pulse switch is installed at the end of the support.

[0009] As a further improvement of this utility model, the distance between the end of the pulse switch and the side of the sprocket is 5~10mm.

[0010] As a further improvement of this utility model: the pulse switch is connected to a PLC controller, and the PLC controller controls an alarm connected to it.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, through the cooperation of sprocket and pulse switch, enables the sprocket to stop rotating and the pulse signal to be abnormal the instant the chain breaks, so that the controller can react quickly, effectively shortening the chain break response speed and improving the real-time performance of chain break monitoring; 2. This utility model can be directly installed on existing chain-driven drive devices, and has strong compatibility; 3. This utility model has strong resistance to vibration interference, reduces monitoring errors caused by equipment vibration, and has high reliability in chain break monitoring; 4. The chain breakage protection device of this utility model also effectively improves the service life of the device and reduces maintenance costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the chain breakage protection device for the accumulation chain drive system of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the chain breakage protection device for the accumulation chain drive system of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the fixing rod of the chain breakage protection device for the accumulation chain drive system of this utility model; Figure 4 This is a schematic diagram of the support structure of the chain breakage protection device for the accumulation chain drive system of this utility model; In the diagram: 1. Truss; 2. Drive chain; 3. First mounting bracket; 4. Sprocket; 5. Second mounting bracket; 6. Pulse switch; 7. Fixing rod; 8. Bearing; 9. Positioning sleeve; 10. Limiting ring; 11. Cross partition; 12. Limiting sleeve; 13. Bracket; 14. Strip hole; 15. PLC controller; 16. Alarm. Detailed Implementation

[0013] 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.

[0014] refer to Figures 1 to 4A chain breakage protection device for an accumulation chain drive system includes a truss 1, a drive chain 2 on the truss 1, a first mounting bracket 3 on the truss 1, a sprocket 4 rotatably connected to the first mounting bracket 3, the sprocket 4 meshing with the drive chain 2, and a second mounting bracket 5 on the truss 1, a pulse switch 6 mounted on the second mounting bracket 5, the pulse switch 6 being mounted directly opposite the tooth portion of the sprocket 4.

[0015] A fixing rod 7 is installed on the first mounting bracket 3, and a bearing 8 is sleeved on the fixing rod 7. The bearing 8 is installed in the shaft hole of the sprocket 4.

[0016] One end of the fixing rod 7 is connected to the first mounting bracket 3 by a thread, and a positioning sleeve 9 is sleeved in the middle. The bearing 8 is sleeved on the positioning sleeve 9. A limit ring 10 is fixed to the end of the positioning sleeve 9 away from the first mounting bracket 3. A cross partition 11 is also provided on the limit ring 10. The cross partition 11 is located between the pulse switch 6 and the sprocket 4. The end of the pulse switch 6 is directly opposite the tooth part of the sprocket 4 through the gap of the cross partition 11.

[0017] A limiting sleeve 12 is provided between the sprocket 4 and the first mounting bracket 3.

[0018] The second mounting bracket 5 is provided with a bracket 13, and the bracket 13 has a strip hole 14. The pulse switch 6 is installed at the end of the bracket 13.

[0019] The distance between the end of the pulse switch 6 and the side of the sprocket 4 is 5~10 mm.

[0020] The pulse switch 6 is connected to the PLC controller 15, and the PLC controller 15 controls the alarm 16 connected to it.

[0021] Working principle: During normal operation, the drive chain 2 rotates, driving the sprocket 4 to rotate at a constant speed. The periodic triggering of the sprocket 4 teeth triggers the pulse switch 6, generating a periodic pulse signal. The generated pulse signal is transmitted back to the PLC controller 15. The PLC controller 15 monitors the pulse signal in real time and controls the alarm 16 and the power switch. When the pulse signal is periodically normal, operation is maintained; when the pulse signal disappears or exceeds the threshold, an alarm is triggered and the motor power is cut off.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A chain breakage protection device for an accumulation chain drive system, comprising a truss (1), wherein a drive chain (2) is provided on the truss (1), characterized in that: The truss (1) is provided with a first mounting bracket (3), and a sprocket (4) is rotatably connected to the first mounting bracket (3). The sprocket (4) is meshed with the drive chain (2). The truss (1) is also provided with a second mounting bracket (5), and a pulse switch (6) is provided on the second mounting bracket (5). The pulse switch (6) is installed directly opposite the toothed part of the sprocket (4).

2. The chain breakage protection device for an accumulation chain drive system according to claim 1, characterized in that: A fixing rod (7) is installed on the first mounting bracket (3), and a bearing (8) is sleeved on the fixing rod (7). The bearing (8) is installed in the shaft hole of the sprocket (4).

3. The chain breakage protection device for an accumulation chain drive system according to claim 2, characterized in that: One end of the fixed rod (7) is connected to the first mounting bracket (3) by a thread, and a positioning sleeve (9) is sleeved in the middle. The bearing (8) is sleeved on the positioning sleeve (9). A limit ring (10) is fixed at the end of the positioning sleeve (9) away from the first mounting bracket (3). A cross partition (11) is also provided on the limit ring (10). The cross partition (11) is located between the pulse switch (6) and the sprocket (4). The end of the pulse switch (6) is directly opposite the tooth part of the sprocket (4) through the gap of the cross partition (11).

4. The chain breakage protection device for an accumulation chain drive system according to claim 3, characterized in that: A limiting sleeve (12) is provided between the sprocket (4) and the first mounting bracket (3).

5. The chain breakage protection device for an accumulation chain drive system according to claim 4, characterized in that: The second mounting bracket (5) is provided with a bracket (13), and the bracket (13) has a strip hole (14). The pulse switch (6) is installed at the end of the bracket (13).

6. The chain breakage protection device for an accumulation chain drive system according to claim 5, characterized in that: The distance between the end of the pulse switch (6) and the side of the sprocket (4) is 5~10 mm.

7. The chain breakage protection device for an accumulation chain drive system according to claim 6, characterized in that: The pulse switch (6) is connected to a PLC controller (15), and the PLC controller (15) controls an alarm (16) connected to it.

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