Alarm device for grate bed deviation and side plate abnormity of chain grate machine

Abstract

The utility model discloses a chain grate bed deviation and side plate abnormity alarm device, which belongs to the technical field of chain grate equipment and comprises two groups of trigger mechanisms, the two groups of trigger mechanisms are positioned on two sides of a chain grate bed, each trigger mechanism comprises a vertical rod vertically mounted on the upper surface of a guide rail at the bottom of a chain grate, and a limiting pipe is horizontally mounted at the upper end of each vertical rod. A transverse rod is arranged in the limiting pipe, the outer diameter of the transverse rod is smaller than the inner diameter of the limiting pipe, one end of the transverse rod is connected with the lower end of a stress conduction rod in the vertical direction, and the upper end of the stress conduction rod is fixedly connected with the L-shaped contact; a stress compression bar is mounted at the other end of the cross bar; a one-way rotating stop lever is connected to the lower portion of the transverse rod. A trigger terminal of the travel switch is located on the lower side of the stress pressing rod. The early warning system comprises an alarm and a controller, the travel switch is connected with the controller through an AC / DC switching power supply, and the travel switch and the alarm are connected with a 220V power supply through power lines. According to the invention, early warning can be carried out on grate bed deviation and side plate abnormal faults of the chain grate machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of chain grate equipment, and particularly relates to a chain grate grate bed deviation and side plate abnormality alarm device. Background Art

[0002] As we all know, the chain grate machine is a crawler-type heat transfer equipment, which is a machine that undertakes the drying and preheating process in the pellet production process. The chain grate bed is one of the important components of the chain grate machine. It is a large chain composed of various parts. It uses the hot air discharged from the rotary kiln and the waste heat air flow of the ring cooler to dry and preheat the balls on it. Its working conditions are relatively harsh, the temperature varies greatly, from about 20℃ to 1000℃, and it is subject to great tension. This causes the grate bed to often deviate, the grate bed side plate is easily damaged, and other parts are scraped, which causes motor overload, grate bed damage and other faults, resulting in shutdown.

[0003] Therefore, it is imperative to develop an alarm device for chain grate machine grate bed deviation and side plate abnormality, which can promptly give out alarms at the production site and the main control computer interface when abnormal conditions occur in the chain grate machine grate bed and side plates, so as to quickly take corresponding measures to avoid the expansion of the fault. Utility Model Content

[0004] In view of the problems existing in the operation of existing equipment, the utility model provides a chain grate machine grate bed deviation and side plate abnormality alarm device, which can promptly detect faults such as chain grate machine grate bed deviation and side plate abnormality, and avoid the expansion of faults and thus affect production operation.

[0005] The utility model is implemented as follows: a chain grate machine grate bed deviation and side plate abnormality alarm device, comprising:

[0006] Two sets of trigger mechanisms, the two sets of trigger mechanisms are located on both sides of the grate bed of the chain grate machine, each set of trigger mechanisms includes a vertical pole installed vertically on the upper surface of the guide rail at the bottom of the chain grate machine, a limit tube is horizontally installed on the upper end of the vertical pole, a cross bar is arranged in the limit tube, the outer diameter of the cross bar is smaller than the inner diameter of the limit tube, one end of the cross bar is fixedly connected to the lower end of the force transmission rod in the vertical direction, and the upper end of the force transmission rod is fixedly connected to the L-shaped contact; the other end of the cross bar is installed with a force pressure rod; the lower part of the cross bar is connected with a one-way rotating stop rod;

[0007] A travel switch, wherein the trigger terminal of the travel switch is located at the lower side of the stressed pressure rod;

[0008] The early warning system comprises an alarm and a controller, wherein the travel switch is connected to the controller via an AC / DC switching power supply, and the travel switch and the alarm are connected to a 220V power supply via a power line.

[0009] Preferably, the angle between the stress-bearing compression rod and the horizontal plane is not equal to 90 degrees.

[0010] Preferably, the travel switch is a direct-acting travel switch.

[0011] Preferably, the controller includes a PLC and a main control computer; the PLC and the main control computer are connected via a wired network or a wireless network, and the travel switch is connected to the PLC via an AC / DC switching power supply.

[0012] Preferably, the L-shaped contact and the force-transmitting rod are made of round steel bars.

[0013] Preferably, the one-way rotating blocking rod is welded to the lower end of the force-transmitting rod through an angle steel.

[0014] Preferably, the alarm is an audible and visual alarm.

[0015] The utility model provides a chain grate machine grate bed deviation and side plate abnormality alarm device with the following advantages and effects:

[0016] The utility model utilizes the trigger mechanism of the above structure. When the grate bed of the chain grate machine deviates or the side plate of the grate bed is damaged, the vertical direction or horizontal direction of the L-shaped contact will be subjected to the friction force of the deviated part of the grate bed or the damaged lower hanging part of the side plate. The force-bearing pressure rod is rotated through the contact force-transmitting rod to trigger the direct-acting travel switch contact to close the travel switch. After the travel switch is closed, the on-site sound and light alarm sounds, and the main control computer receives remotely at the same time, prompting the on-site personnel and the main control personnel to take emergency measures in time. When the fault is eliminated, the trigger device automatically resets under the action of gravity of the one-way rotating lever.

[0017] The utility model has a simple structure and is easy to manufacture and install. It can timely warn of grate bed deviation and side plate abnormal failure of the chain grate machine, and the alarm can be simultaneously displayed at the production site and the main control computer. It has strong reliability and is convenient for timely troubleshooting, reducing equipment damage and accidental shutdown caused by grate bed deviation and side plate abnormality, saving inspection and maintenance costs, and improving the production efficiency of the chain grate machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a grate bed deviation and side plate abnormality alarm device of a chain grate machine on one side of a preferred embodiment of the utility model;

[0019] Figure 2 It is a structural diagram of the trigger device in the utility model.

[0020] Among them: 1. L-shaped contact; 2. Force transmission rod; 3. One-way rotating stop rod; 4. Chain grate bottom guide rail; 5. Limiting tube; 6. Force pressure rod; 7. Direct-acting travel switch; 8. 220V power supply; 9. Sound and light alarm; 10. AC / DC switching power supply. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments.

[0022] like Figure 1 and Figure 2 As shown, a chain grate machine grate bed deviation and side plate abnormality alarm device comprises

[0023] Two sets of trigger mechanisms are located on both sides of the grate bed of the chain grate machine. The structural diagram of each set of trigger mechanisms is as follows: Figure 2 As shown, each trigger mechanism group includes a vertical rod installed vertically on the upper surface of the bottom guide rail 4 of the chain grate machine, and a limit tube 5 is installed horizontally at the upper end of the vertical rod, and a cross bar is arranged inside the limit tube 5, and the outer diameter of the cross bar is smaller than the inner diameter of the limit tube 5, and one end of the cross bar is fixedly connected to the lower end of the force transmission rod 2 in the vertical direction, and the upper end of the force transmission rod 2 is fixedly connected to the L-shaped contact 1; a force pressure rod 6 is installed at the other end of the cross bar; a one-way rotating stop rod 3 is connected below the cross bar; when in use, the L-shaped contact 1 is set below the outer side of the deviation component or the side plate of the chain grate machine grate bed, that is, the deviation component or the side plate of the chain grate machine grate bed is located on the inner side of the L-shaped contact 1; when deviation occurs or the side plate is abnormal, the side plate and the L-shaped contact 1 are in contact and friction; thereby driving the cross bar to shift gears, and the cross bar further drives the force pressure rod 6 to move;

[0024] A travel switch, wherein the trigger terminal of the travel switch is located at the lower side of the pressure rod 6; when the L-shaped contact 1 is squeezed by the side plate, the right end of the pressure rod 6 is driven to move upward, and when the left end of the pressure rod 6 is pressed downward, the travel switch is triggered; the angle between the pressure rod 6 and the horizontal plane is not equal to 90 degrees;

[0025] The early warning system includes an alarm and a controller, the travel switch is connected to the controller through an AC / DC switching power supply 10, and the travel switch and the alarm are connected to a 220V power supply through a power line. In this embodiment, the controller mainly includes a PLC and a main control computer; the PLC 11 and the main control computer 12 are connected through a wired network or a wireless network, and the travel switch is connected to the PLC through an AC / DC switching power supply 10.

[0026] The travel switch selected is a direct-acting travel switch 7.

[0027] Since the PLC, the main control computer and the direct-acting travel switch 7 are all mature electronic components, their working principles and specific connection relationships will not be described in detail.

[0028] The L-shaped contact 1 and the force-transmitting rod 2 are made of round steel bars.

[0029] The one-way rotating blocking rod 3 is welded to the lower end of the force transmission rod 2 through an angle steel.

[0030] The alarm device is an audible and visual alarm device 9.

[0031] The AC ends of the sound and light alarm 9 and the AC / DC switching power supply 10 are respectively connected to the 220V power supply 8; the DC end of the AC / DC switching power supply 10 is connected to the input end of the PLC 11, and the output end of the PLC 11 can be connected to the main control computer 12 through the network.

[0032] See also Figure 2 The L-shaped contact 1 can be made of round steel bars bent. After the L-shaped contact is subjected to force in the vertical direction or the horizontal direction, the force-transmitting rod 2 causes the force-bearing pressure rod 6 to rotate.

[0033] The force transmission rod 2 can be made of round steel bars, a limiting tube 5 is arranged in the middle of the crossbar, the limiting tube 5 is welded and fixed on the top of the vertical rod, and the bottom of the vertical rod is welded to the upper surface of the bottom guide rail 4 of the chain grate.

[0034] The one-way rotating blocking rod 3 is an equilateral angle steel, which can make the trigger device 1 rotate only in one direction along the running direction of the chain grate.

[0035] The AC end of the sound and light alarm 9, the direct-acting travel switch 7 and the AC / DC switching power supply 10 are respectively connected to a 220V power supply.

[0036] The working principle of the utility model of a chain grate machine grate bed deviation and side plate abnormality alarm device is:

[0037] When the grate bed of the chain grate machine deviates or the grate plate is deformed, the small shaft moves, the side plate hole is damaged, and other side plate abnormalities occur, the side plate will deviate to the left or right or fall, pushing the L-shaped contact 1 to move along the direction of the chain grate machine, and the force-bearing pressure rod moves through the force-bearing transmission rod, triggering the direct-acting travel switch contact, closing the travel switch circuit, and transmitting the circuit signal to the early warning system. The on-site sound and light alarm circuit is connected, the alarm sounds and flashes, and at the same time, the circuit signal is transmitted to the PLC through the AC / DC switching power supply. After the main control computer reads the PLC chain grate alarm signal, an alarm window pops up on the main control computer interface, thereby achieving the effect of dual early warning on site and the main control. When the fault is eliminated, the rotating lever automatically resets the L-shaped contact structure and the force-bearing pressure rod device under the action of gravity, and the direct-acting travel switch automatically disconnects the circuit, the alarm is lifted, and the entire device continues to remain in a state of alert.

[0038] The utility model has a simple structure and is easy to manufacture and install. It can timely warn of grate bed deviation and side plate abnormal failure of the chain grate machine, and the alarm can be simultaneously displayed at the production site and the main control computer. It has strong reliability and is convenient for timely troubleshooting, reducing equipment damage and accidental shutdown caused by grate bed deviation and side plate abnormality, saving inspection and maintenance costs, and improving the production efficiency of the chain grate machine.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A chain grate machine grate bed deviation and side plate abnormality alarm device, characterized in that: include: Two groups of trigger mechanisms are provided, and the two groups of trigger mechanisms are located on both sides of the grate bed of the chain grate machine. Each group of trigger mechanisms comprises a vertical pole installed on the upper surface of the bottom guide rail (4) of the chain grate machine, and a limit tube (5) is installed horizontally at the upper end of the vertical pole. A cross bar is arranged inside the limit tube (5), and the outer diameter of the cross bar is smaller than the inner diameter of the limit tube (5). One end of the cross bar is fixedly connected to the lower end of a force transmission rod (2) in the vertical direction, and the upper end of the force transmission rod (2) is fixedly connected to an L-shaped contact (1); a force pressure rod (6) is installed at the other end of the cross bar; and a one-way rotating stop rod (3) is connected below the cross bar; A travel switch, wherein the trigger terminal of the travel switch is located at the lower side of the stressed pressure rod (6); The early warning system comprises an alarm and a controller, wherein the travel switch is connected to the controller via an AC / DC switching power supply (10), and the travel switch and the alarm are connected to a 220V power supply via a power line.

2. The chain grate machine grate bed deviation and side plate abnormality alarm device according to claim 1 is characterized by: The angle between the stress-bearing pressure rod (6) and the horizontal plane is not equal to 90 degrees.

3. The chain grate machine grate bed deviation and side plate abnormality alarm device according to claim 1, characterized in that: The travel switch is a direct-acting travel switch (7).

4. The chain grate machine grate bed deviation and side plate abnormality alarm device according to claim 1, characterized in that: The controller comprises a PLC and a main control computer; the PLC and the main control computer are connected via a wired network or a wireless network, and the travel switch is connected to the PLC via an AC / DC switching power supply (10).

5. The chain grate machine grate bed deviation and side plate abnormality alarm device according to claim 1, characterized in that: The L-shaped contact (1), the force-transmitting rod (2) and the vertical rod are made of round steel bars.

6. The chain grate machine grate bed deviation and side plate abnormality alarm device according to claim 1, characterized in that: The one-way rotating blocking rod (3) is welded to the lower end of the force transmission rod (2) via angle steel.

7. The chain grate machine grate bed deviation and side plate abnormality alarm device according to claim 1, characterized in that: The alarm is an audible and visual alarm (9).

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