A chain skip and drop early warning device

Abstract

A chain skipping / dropping warning device is disclosed. It primarily addresses the technical problems of existing mesh belt dryers, such as the inability to predict chain and mesh damage in advance. The key technical points are: a power mechanism comprising a body, partitions, moving sprockets, and a chain. Multiple sets of moving sprockets are arranged in pairs at both ends of the body, and the chain meshes around the multiple moving sprockets at the same end of the body to form a loop; and an anti-dropping mechanism positioned above the chain near the moving sprockets. This anti-dropping mechanism includes a moving contact, a stationary contact, and a mounting component. The moving and stationary contacts are mounted on the mounting component and are on the same surface as the chain. The moving and stationary contacts cooperate to switch the anti-dropping mechanism between an open and closed state. In the open state, the moving and stationary contacts do not contact each other. It is mainly applied to mesh belt dryers.

Description

Technical Field

[0001] This invention relates to a chain skipping tooth and chain drop warning device. Background Technology

[0002] Currently, during the operation of mesh belt dryers, the chain on the mesh belt may break due to uncontrollable reasons, causing damage to the mesh belt and chain, thus preventing the equipment from working properly. Existing technology only protects the motor through overcurrent protection of the frequency converter, without directly protecting the mesh belt, chain, and gears. Summary of the Invention

[0003] The purpose of this invention is to address the issue of chain slippage and chain breakage during operation of a mesh belt dryer. This occurs when the gears engage with the chain at temperatures ranging from 0 to 90°C and the chain speed is 2 to 8 mm / s. Due to uncontrollable factors, the chain may deviate from its normal operating track, causing damage to the mesh belt surface. This invention aims to prevent the chain from slipping off its normal operating track and is also a timely and effective chain slippage and chain breakage warning device.

[0004] The technical solution adopted by this invention to solve its technical problem includes: The power mechanism includes a body, a partition, a drive sprocket, and a chain. Multiple sets of drive sprockets are arranged in pairs at both ends of the body. The chain meshes around multiple drive sprockets at the same end of the body to form a cycle. A partition is provided between two drive sprockets at the same end of the body. An anti-chain-dropping mechanism is disposed above the chain near the drive sprocket. The anti-chain-dropping mechanism includes a moving contact, a stationary contact, and a mounting component. The moving and stationary contacts are disposed on the mounting component and are on the same surface as the chain. The moving and stationary contacts cooperate to switch the anti-chain-dropping mechanism between a disconnected state and a connected state. In the disconnected state, the moving and stationary contacts are not in contact. In the connected state, the moving and stationary contacts are in electrical contact, and the moving and stationary contacts are connected by an abnormal protrusion of the chain. The anti-chain-dropping mechanism also includes a contact component. A moving contact component is disposed on the moving contact, and the moving contact component makes the moving contact contact the stationary contact.

[0005] Furthermore, the anti-chain-dropping mechanism also includes an insulating component, and the moving contact and the stationary contact are respectively fixedly connected to the mounting component through the insulating component.

[0006] Furthermore, the mounting component of the present invention is provided with a positioning hole and a movable groove. The mounting component is fixed to the machine body through the positioning hole, and the mounting component is adjusted to adjust the angle with the chain through the movable groove.

[0007] Furthermore, the present invention provides a stationary contact element on the stationary contact head. In the connected state, the moving contact element contacts the stationary contact element, so that the moving contact head and the stationary contact head make electrical contact.

[0008] Preferably, the ends of the moving contact and the stationary contact are tapered, which reduces the probability of the "chain skipping tooth and chain falling off warning device" malfunctioning.

[0009] Preferably, the moving contact is longer than the stationary contact.

[0010] Furthermore, the anti-chain-dropping mechanism of the present invention has a baffle on the body near the direction of chain movement, which removes foreign objects from the chain and reduces the probability of the "chain skipping tooth and chain-dropping warning device" malfunctioning.

[0011] Furthermore, the present invention also includes wires, which are respectively connected to the moving contact and the stationary contact.

[0012] Preferably, the end of the moving contact of the present invention has a protrusion in the direction of the stationary contact.

[0013] Preferably, the moving contact end of the moving contact of the present invention is bent towards the stationary contact.

[0014] This invention includes: a power mechanism comprising a body, a partition, a moving sprocket, and a chain; multiple sets of moving sprockets are arranged in pairs at both ends of the body; the chain meshes around multiple moving sprockets at the same end of the body to form a loop; a partition is provided between two moving sprockets at the same end of the body; and an anti-chain-dropping mechanism disposed below the chain near the moving sprockets. The anti-chain-dropping mechanism includes a moving contact, a stationary contact, and a mounting component. The moving contact and the stationary contact are disposed on the mounting component and are on the same surface as the chain. The moving contact and the stationary contact cooperate to switch the anti-chain-dropping mechanism between a disconnected state and a connected state. In the disconnected state, the moving contact and the stationary contact do not contact each other; in the connected state, the moving contact and the stationary contact are electrically contacted and connected by an abnormal protrusion of the chain. The anti-chain-dropping mechanism also includes a contact component; a moving contact component is provided on the moving contact, and the moving contact component makes the moving contact contact the stationary contact.

[0015] A dryer includes a moving sprocket, a chain, and a motor. The motor drives the chain and sprocket to move. A chain skipping and chain drop warning device is provided on the moving sprocket of the mesh belt dryer.

[0016] A dryer includes a moving sprocket, a chain, and a motor. The motor drives the chain and sprocket to move. A chain skipping and chain drop warning device is provided under the moving sprocket of the mesh belt dryer.

[0017] A dryer includes a moving sprocket, a chain, and a motor. The motor drives the chain and sprocket to move. A chain skipping and chain drop warning device is provided above and below the moving sprocket of the mesh belt dryer.

[0018] The beneficial effects of this invention are: it promptly stops the dryer's operation when the chain abnormally bulges, effectively protecting the dryer's mesh belt from damage. It is primarily applied to mesh belt dryers. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a dryer; Figure 2 This is a schematic diagram of another type of dryer; Figure 3 This is a structural diagram of a combined dryer with a chain skipping / loosening warning device; Figure 4 This is a schematic diagram of the present invention; Figure 5 This is a schematic diagram of the structure of the present invention; Figure 6 This is another structural schematic diagram of the present invention. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0021] Example 1, see Figures 1 to 4 The present invention includes: a power mechanism comprising a body, a partition, a moving sprocket, and a chain; multiple sets of moving sprockets are arranged in pairs at both ends of the body; the chain meshes with and surrounds multiple moving sprockets at the same end of the body to form a loop; a partition is provided between two moving sprockets at the same end of the body; and an anti-chain-dropping mechanism disposed above the chain near the moving sprockets. The anti-chain-dropping mechanism includes a moving contact, a stationary contact, and a mounting component. The moving contact and the stationary contact are disposed on the mounting component and are on the same surface as the chain. The moving contact and the stationary contact cooperate to switch the anti-chain-dropping mechanism between a disconnected state and a connected state. In the disconnected state, the moving contact and the stationary contact do not contact each other; in the connected state... In the connected state, the moving contact is electrically connected to the stationary contact, and the moving contact is connected to the stationary contact through the abnormal protrusion of the chain. The anti-chain-dropping mechanism also includes a contact element, on which a moving contact element is provided, and the moving contact element makes the moving contact contact the stationary contact. The anti-chain-dropping mechanism also includes an insulating element, and the moving contact and the stationary contact are respectively fixedly connected to the mounting element through the insulating element. The mounting element is provided with a positioning hole and a movable groove. The mounting element is fixed to the machine body through the positioning hole, and the angle between the mounting element and the chain is adjusted through the movable groove. A stationary contact element is provided on the stationary contact. In the connected state, the moving contact element contacts the stationary contact element, making the moving contact and the stationary contact electrically connected.

[0022] Example 2, see Figures 4 to 6 In this invention, a stationary contact element is provided on the stationary contact head. In the connected state, the moving contact element contacts the stationary contact element, making the moving contact head electrically contact the stationary contact head. The ends of both the moving and stationary contact elements are tapered, which reduces the probability of the "chain skipping tooth and chain drop warning device" malfunctioning. The moving contact head is longer than the stationary contact head. A baffle is provided on the body of the anti-chain drop mechanism near the chain movement direction, which removes foreign objects from the chain and reduces the probability of the "chain skipping tooth and chain drop warning device" malfunctioning. Wires connect the moving contact head and the stationary contact head respectively. The end of the moving contact element of the moving contact head has a protrusion towards the stationary contact head. The end of the moving contact element is bent near the stationary contact head. The rest is the same as any other embodiment of this invention or a combination of two or more embodiments.

[0023] Example 3, see Figures 1 to 6 In this invention, two stainless steel contacts, namely a moving contact and a stationary contact, are installed at a position approximately 5-8 mm away from the chain in the positive direction of each chain entering the gear. The moving and stationary contacts are fixed by a high-temperature insulator and are spaced approximately 5-8 mm apart. The specifications of the stainless steel contacts are: material 201, length 100 mm, width 10 mm, and thickness 1 mm. The part of the moving contact that contacts the chain is conical, with a top width of approximately 3 mm. A baffle is installed approximately 10 mm in front of the chain entering the "chain skipping and falling off warning device," with the baffle approximately 3-5 mm above the chain. The moving and stationary contacts are connected to DC24V+ and DC24V- respectively via high-temperature wires, with the other end connected to the coil of an intermediate relay.

[0024] Example 4, see Figures 1 to 6 In this invention, when the mesh belt gear is running, if the chain is about to enter the gear due to uncontrollable reasons, the chain will bulge. At the same time, the chain will push up the moving contact of the "chain skipping and chain falling warning device". At this time, the moving contact will contact the stationary contact, the intermediate relay coil will be energized and attracted, and the auxiliary point of the intermediate relay will start to act, giving an external electrical signal. The gear will stop running in time, thereby preventing the chain from falling off the gear and causing major damage to the equipment. The rest is the same as any other embodiment of this invention or a combination of two or more embodiments.

[0025] Example 5, see Figures 1 to 6 This invention addresses the issue of the moving contact changing its position due to the irregular shape of the chain's running track. When the moving contact contacts the stationary contact, the DC24V circuit is activated, fulfilling the condition for the gear to stop rotating. The gear stops rotating promptly, thus preventing the irregular displacement of the chain and gear, and ensuring the mesh surface of the conveyor belt remains in a normal state. The rest of the invention is identical to any other embodiment or a combination of two or more embodiments.

Claims

1. A chain skipping / loosening warning device, characterized in that: it include: The power mechanism includes a body, a partition, a drive sprocket, and a chain. Multiple sets of drive sprockets are arranged in pairs at both ends of the body. The chain meshes around multiple drive sprockets at the same end of the body to form a cycle. A partition is provided between two drive sprockets at the same end of the body. An anti-chain-dropping mechanism is disposed above the chain near the drive sprocket. The anti-chain-dropping mechanism includes a moving contact, a stationary contact, and a mounting component. The moving and stationary contacts are disposed on the mounting component and are on the same surface as the chain. The moving and stationary contacts cooperate to switch the anti-chain-dropping mechanism between a disconnected state and a connected state. In the disconnected state, the moving and stationary contacts are not in contact. In the connected state, the moving and stationary contacts are in electrical contact, and the moving and stationary contacts are connected by an abnormal protrusion of the chain. The anti-chain-dropping mechanism also includes a contact component. A moving contact component is disposed on the moving contact, and the moving contact component makes the moving contact contact the stationary contact.

2. The chain skipping / loosening warning device according to claim 1, characterized in that: The anti-chain-dropping mechanism also includes an insulating component, and the moving contact and the stationary contact are respectively fixedly connected to the mounting component through the insulating component.

3. The chain skipping / loosening warning device according to claim 1, characterized in that: The mounting component is provided with positioning holes and movable grooves. The mounting component is fixed to the machine body through the positioning holes, and the angle between the mounting component and the chain is adjusted through the movable grooves.

4. The chain skipping / loosening warning device according to any one of claims 1 to 3, characterized in that: The stationary contact is provided with a stationary contact element. In the connected state, the moving contact element contacts the stationary contact element, so that the moving contact and the stationary contact are in electrical contact.

5. The chain skipping / loosening warning device according to claim 4, characterized in that: The ends of the moving contact and the stationary contact are tapered.

6. The chain skipping / loosening warning device according to claim 4, characterized in that: A baffle is provided on the body of the anti-chain-dropping mechanism near the direction of chain movement.

7. The chain skipping / loosening warning device according to claim 4, characterized in that: It also includes wires, which connect the moving contact and the stationary contact respectively.

8. The chain skipping / loosening warning device according to claim 4, characterized in that: The moving contact has a protrusion at its end facing the stationary contact.

9. A chain skipping / loosening warning device, characterized in that: it include: The power mechanism includes a body, a partition, a drive sprocket, and a chain. Multiple sets of drive sprockets are arranged in pairs at both ends of the body. The chain meshes around multiple drive sprockets at the same end of the body to form a cycle. A partition is provided between two drive sprockets at the same end of the body. An anti-chain-dropping mechanism is disposed below the chain near the drive sprocket. The anti-chain-dropping mechanism includes a moving contact, a stationary contact, and a mounting component. The moving and stationary contacts are disposed on the mounting component and are on the same surface as the chain. The moving and stationary contacts cooperate to switch the anti-chain-dropping mechanism between a disconnected state and a connected state. In the disconnected state, the moving and stationary contacts are not in contact. In the connected state, the moving and stationary contacts are in electrical contact and are connected by an abnormal protrusion of the chain. The anti-chain-dropping mechanism also includes a contact component. A moving contact component is disposed on the moving contact, which makes the moving contact contact the stationary contact.

10. A dryer comprising a drive sprocket, a chain, and a motor, wherein the motor drives the chain and sprocket to move, characterized in that: A chain skipping and chain drop warning device is installed on the moving sprocket of the dryer, or a chain skipping and chain drop warning device is installed under the moving sprocket of the dryer, or a chain skipping and chain drop warning device is installed both above and below the moving sprocket of the dryer.

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