Motion monitoring device for tamping hammer in tamping machine

Abstract

The utility model belongs to the technical field of tamping machine detection, and particularly relates to a motion monitoring device of a tamping hammer in a tamping machine, which comprises a fixed seat, an elastic plate, a tachometer wheel mechanism and a proximity switch, the tachometer wheel mechanism comprises a support plate, a transmission shaft, a bearing and a hollow nylon cylinder, one end of the elastic plate is connected with the fixed seat, and the other end of the elastic plate is connected with the proximity switch. The transmission shaft penetrates through the two supporting plates and is fixed to the supporting plates, the middle of the transmission shaft is slidably connected with the bearing, the hollow nylon cylinder is fixed to the bearing, the elastic plate is a stainless steel elastic thin plate, and three bolts are evenly fixed to the side wall of the hollow nylon cylinder. The proximity switch is fixed to the side wall of the supporting plate and connected with the PLC system through a circuit. The device is simple in structure, convenient to use and low in cost, can timely find out the abnormity of the tamping hammer, prevents the situation that the tamping hammer is buried in a coal cake due to negligence of workers or difficulty in finding due to poor sight, reduces equipment shutdown, and improves the production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of tamping machine testing technology, and in particular relates to a motion monitoring device for the tamping hammer in a tamping machine. Background Technology

[0002] As a core piece of equipment in the auxiliary facilities of coke ovens, the stability of the tamping machine's operation directly affects the production efficiency and process indicators of the entire coking enterprise. During the tamping operation, whether it is manual or automatic, some tamping hammers often become buried in the coal cake due to insufficient bouncing stroke and short reciprocating stroke. This can occur when the amount of coal fed is large. Tamping hammers are usually monitored manually, and they are not easily noticed by workers due to negligence or poor visibility. As a result, the tamping hammers can become completely buried in the coal cake, causing at least 4 to 5 hours of equipment downtime and seriously affecting the stable operation of production. Utility Model Content

[0003] The purpose of this invention is to provide a motion monitoring device for the tamping hammer in a tamping machine, which solves the problem that the tamping hammer may be buried in the coal cake due to insufficient bouncing stroke, worker negligence, or poor visibility.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A motion monitoring device for a tamping hammer in a tamping machine includes a fixed base, an elastic plate, a speed measuring wheel mechanism, and a proximity switch. The speed measuring wheel mechanism includes a support plate, a drive shaft, a bearing, and a hollow nylon cylinder. One end of the elastic plate is connected to the fixed base, and the other end is connected to the support plates on both sides of its bottom. The drive shaft passes through the two support plates and is fixed thereto. The bearing is slidably connected to the middle of the drive shaft, and the hollow nylon cylinder is fixed on the bearing. The elastic plate is a thin stainless steel elastic plate, and three bolts are evenly fixed to the side wall of the hollow nylon cylinder. The proximity switch is fixed to the side wall of the support plate and is connected to a PLC system via wiring.

[0006] Preferably, the fixing base includes an "L"-shaped bracket, a connecting plate, and a reinforcing plate. The connecting plate is fixed to the top of the "L"-shaped bracket, the reinforcing plate is obliquely arranged between the "L"-shaped bracket and the connecting plate, and the "L"-shaped bracket is connected to the elastic plate.

[0007] Preferably, the elastic plate is a curved plate.

[0008] Working Principle: The bracket of the fixed seat is installed in a position with sufficient space on the side of the tamping hammer. The hollow nylon cylinder of the speed measuring wheel mechanism is in close contact with the friction plate of the tamping hammer. The elasticity of the elastic plate keeps the hollow nylon cylinder in close contact with the friction plate of the tamping hammer and exerts a certain pressure. After the tamping motor starts, the tamping hammer jumps and falls normally under the drive of the transmission device. The friction plate of the tamping hammer drives the hollow nylon cylinder to rotate. The proximity switch receives the pulse signal generated by the rotation of the bolt on the inner wall of the hollow nylon cylinder and transmits it to the PLC system. The PLC processes this pulse signal. The system analyzes and processes the pulse signals, accumulating and counting them. It compares the current total number of pulses with the total number of pulses 5 seconds ago. If the current total number of pulses is greater than the number of pulses 5 seconds ago, it means the tamping hammer is starting and falling normally. If the current total number of pulses is equal to the number of pulses 5 seconds ago, it means the proximity switch is not counting or the tamping hammer is not moving. The PLC system will then stop the tamping motor, alerting the operator. The faulty hammer number will also be displayed on the HMI interface for quick handling by the operator, preventing hammer malfunctions caused by abnormal stopping.

[0009] The beneficial effects achieved by this utility model are as follows:

[0010] (1) The bolts on the hollow nylon cylinder rotate by rotating, and the pulse signal of the bolt rotation received by the proximity switch is used to determine whether the tamping hammer is jumping normally. Abnormalities are detected in time to prevent the tamping hammer from being buried in the coal cake due to negligence of the staff or poor visibility. This reduces equipment downtime and improves production efficiency.

[0011] (2) The mounting base adopts a bracket and reinforcing plate design, which facilitates the installation of the mounting base and enhances the overall stability of the device;

[0012] (3) The elastic plate is made of stainless steel sheet. The elasticity allows the hollow nylon cylinder to be tightly attached to the tamping hammer friction plate and has a certain pressure, ensuring that the tamping hammer friction plate drives the hollow nylon cylinder to rotate.

[0013] (4) The elastic plate is a bent plate. As the surface of the hollow nylon cylinder wears, the bending angle of the elastic plate can be adjusted so that it always fits tightly against the surface of the tamping hammer friction plate, ensuring that the hollow nylon cylinder rotates while extending the service life of the hollow nylon cylinder.

[0014] (5) The device has a simple structure, is easy to use, and has a low cost. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the fixing base in an embodiment of this utility model;

[0017] Figure 3This is a schematic diagram of the speed measuring wheel mechanism in an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Fixed base; 11. "L"-shaped bracket; 12. Connecting plate; 13. Reinforcing plate; 2. Elastic plate; 3. Speed ​​measuring wheel mechanism; 31. Support plate; 32. Drive shaft; 33. Bearing; 34. Hollow nylon cylinder; 4. Proximity switch; 5. PLC system. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-3 As shown, a motion monitoring device for a tamping hammer in a tamping machine includes a fixed base 1, an elastic plate 2, a speed measuring wheel mechanism 3, and a proximity switch 4. The fixed base 1 includes an "L"-shaped bracket 11, a connecting plate 12, and a reinforcing plate 13. The connecting plate 12 is fixed to the top of the "L"-shaped bracket 11, and the reinforcing plate 13 is obliquely arranged between the "L"-shaped bracket 11 and the connecting plate 12. The elastic plate 2 is a thin elastic stainless steel plate and is a curved plate. The speed measuring wheel mechanism 3 includes a support plate 31, a drive shaft 32, a bearing 33, and a hollow nylon cylinder 34. One end of the elastic plate 2 is connected to the "L"-shaped bracket 11, and the other end is connected to the support plates 31 on both sides of the bottom. The drive shaft 32 passes through the two support plates 31 and is connected to them. A fixed drive shaft 32 is slidably connected to a bearing 33 in the middle. A hollow nylon cylinder 34 is fixed on the bearing 33. Three bolts are evenly fixed to the side wall of the hollow nylon cylinder 34. A proximity switch 4 is fixed to the side wall of the support plate 31. The proximity switch 4 is connected to the PLC system 5 through a circuit. The "L"-shaped bracket and connecting plate are reinforced by a reinforcing plate to facilitate the installation of the fixed seat and improve the stability of the device. The elastic plate is a bent plate. As the surface of the hollow nylon cylinder wears, the bending angle of the elastic plate can be adjusted so that it always fits tightly against the surface of the tamping hammer friction plate, ensuring that the tamping hammer friction plate drives the hollow nylon cylinder to rotate and extending the service life of the hollow nylon cylinder.

Claims

1. A motion monitoring device for tamping hammers in a tamping machine, characterized in that The device includes a fixed base, an elastic plate, a speed measuring wheel mechanism, and a proximity switch. The speed measuring wheel mechanism includes a support plate, a drive shaft, a bearing, and a hollow nylon cylinder. One end of the elastic plate is connected to the fixed base, and the other end is connected to both bottom sides of the support plate. The drive shaft passes through the two support plates and is fixed thereto. A bearing is slidably connected to the middle of the drive shaft, and the hollow nylon cylinder is fixed on the bearing. The elastic plate is a thin stainless steel elastic plate, and three bolts are evenly fixed to the side wall of the hollow nylon cylinder. The proximity switch is fixed to the side wall of the support plate and is connected to a PLC system via wiring.

2. A motion monitoring device for a tamper in a tamper machine according to claim 1, characterized in that The fixed base includes an "L"-shaped bracket, a connecting plate, and a reinforcing plate. The connecting plate is fixed to the top of the "L"-shaped bracket, and the reinforcing plate is obliquely arranged between the "L"-shaped bracket and the connecting plate. The "L"-shaped bracket is connected to the elastic plate.

3. A motion monitoring device for a tamper in a tamper machine according to claim 1, characterized in that The elastic plate is a curved plate.

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