KR102052845B1 - Two way conveyor system with tension control function - Google Patents

Abstract

The present invention relates to a two-way conveyor system having a tension control function, more specifically, which makes it possible to easily adjust tension of a conveyor chain in a chain-type conveyor, thereby preventing the problems caused by a decrease in the tension of the conveyor chain and the resulting sagging of the conveyor, etc. The two-way conveyor system comprises: a main wheel and at least one auxiliary wheel that are connected so that a conveyor chain is circulated; a driving motor rotating the main wheel in both directions; and a tension control device adjusting tension of the conveyor chain, wherein the tension control device, if sagging of the conveyor chain occurs in the process of switching rotation directions of the main wheel, presses the conveyor chain to one side to adjust the tension. In particular, the two-way conveyor system of the present invention can be configured by adding only a separate tension control device without changing an existing conveyor system, so it is possible to automatically adjust the tension of the conveyor chain in real time while ensuring the structural stability of the conveyor system. In addition, the present invention can minimize the configuration required for real-time tension control of the conveyor chain by applying a mechanical control method that can adjust the tension in real time using the structural characteristics instead of an electronic control method depending on the operation of many sensors. Thus, it is possible to improve reliability and competitiveness in the field of conveyor systems, in particular, chain conveyor systems as well as similar or related fields.

Description

Two way conveyor system with tension control function

The present invention relates to a two-way conveyor system having a tension control function, and more particularly, it is possible to easily adjust the tension of the conveyor chain configured in the chain conveyor, a problem due to the conveyor chain is reduced tension and the resulting sagging of the conveyor To prevent it in advance.

In particular, the present invention is configured by adding a separate tension control device without changing the existing conveyor system, while ensuring the structural stability of the conveyor system, having a tension control function that can automatically adjust the tension of the conveyor chain in real time A two-way conveyor system.

Conveyor refers to a machine that continuously carries materials, products, or cargo at a certain distance. Screw conveyors for conveying grains, bucket conveyors for moving materials upwards, and trolley conveyors for hanging goods. , Fluid conveyors for moving fluids, and the most commonly used roller conveyors, belt conveyors and chain conveyors.

Among these conveyors, a chain conveyor is provided with a scraper, a bucket, a wire net, and the like on an endless chain to transport loads. Because of its reliable driving and high durability, it is widely used in various fields.

However, the chain conveyor may be drooped due to the weight of the chain itself, which may cause a problem in carrying a load or damage to a sprocket wheel that circulates the chain or the chain. This may result in malfunction or stoppage of the conveyor system, or damage to the load.

One of the techniques for solving this problem is the Republic of Korea Patent Publication No. 10-1407784 'conveyor tension adjusting device' (hereinafter referred to as 'prior art') of the prior art document.

Looking at the prior art, in a structure in which the chain of the conveyor is circulated by the sprocket wheel (sprocket wheel), through the process of pulling the sprocket wheel configured on one side of the conveyor, it is configured to increase the tension of the chain.

However, in the case of the method of adjusting the tension by moving the sprocket wheel connected to the chain as in the prior art, due to the additional structure for moving the sprocket wheel is further configured around the sprocket, the surrounding structure during operation of the conveyor Damage or malfunction of the sprocket wheel may occur due to mechanical friction, machining error, operating error, thermal deformation, etc. of the added components.

In particular, in the case of mechanical equipment, the coupling relationship between the components is weakened by vibrations generated during operation, which causes structural safety of the mechanical equipment itself, as well as safety accidents such as human damage. The more and more complex this is, the bigger and faster it will occur.

As a result, the method of adjusting the tension by moving the sprocket wheel as in the prior art, the structural stability is reduced compared to the existing state of the sprocket wheel fixed, resulting in damage or breakage of the product to be carried, damage or malfunction of the system There is a problem that causes damage to workers due to safety accidents.

Republic of Korea Patent Publication No. 10-1407784 'Conveyor tension control device'

In order to solve the above problems, the present invention can easily adjust the tension of the conveyor chain configured in the chain conveyor, the conveyor chain can prevent problems in advance due to the decrease in tension and the resulting sagging of the conveyor It is an object of the present invention to provide a two-way conveyor system having a tension control function.

In particular, the present invention is configured by adding a separate tension control device without changing the existing conveyor system, while ensuring the structural stability of the conveyor system, having a tension control function that can automatically adjust the tension of the conveyor chain in real time The purpose is to provide a two-way conveyor system.

In addition, the present invention is a two-way conveyor system configured to enable bi-directional conveyance, by preventing the tension drop (falling occurrence) of the conveyor chain generated in the drive sprocket wheel at the time when the circulation direction of the conveyor chain is switched, An object of the present invention is to provide a two-way conveyor system having a tension control function to enable a stable two-way operation.

In order to achieve the above object, the two-way conveyor system having a tension control function according to the present invention, the main wheel and at least one auxiliary wheel connected to the conveyor chain is circulated; A drive motor for rotating the main wheel in both directions; And a tension control device for adjusting the tension of the conveyor chain, wherein the tension control device pressurizes the conveyor chain to one side when deflection of the conveyor chain occurs while the rotation direction of the main wheel is switched. Adjust the tension

In addition, the tension control device, the pressing support module for pressing the conveyor chain in the outward direction; And a support wheel disposed to be staggered with the pressure supporting module to support the conveyor chain inwardly.

In addition, the pressing support module, the guide mechanism for guiding the movement of the conveyor chain; And an elastic pressing unit for pressing the guide tool to press the conveyor chain in an outward direction.

The pressing support module may further include a locking unit configured to restrict the guide tool from moving in the opposite direction of the pressing direction.

The elastic pressing unit may include: a housing having a space part open in one direction; And a push rod coupled to the space portion of the housing and pushed in one direction by an elastic force, and the locking portion may include a locking block that restricts movement of the push rod.

In addition, the housing, the guide hole is formed in the longitudinal direction on one side, the push rod, the movement limiting projection is located in the guide hole to reciprocate in the guide hole; may be formed.

In addition, the push rod, a ratchet (Ratchet) portion is formed on at least a portion of the surface facing the locking block, the latching block, a pole corresponding to the latch portion on at least a portion of the surface facing the push rod ( Pawl) portion may be formed.

The housing may include a through hole through which the locking block reciprocates, and the locking unit includes: an elastic spring for pressing the locking block toward the push rod; And a support plate coupled to the housing to support the elastic spring.

In addition, the locking portion, the unlocking handle for pulling the locking block in the opposite direction of the push rod side; may be further configured.

In addition, the unlocking handle, the connecting bar is connected to the engaging block through the support plate; A gripper configured at an end of the connection bar; And spacers spaced apart from the gripper by a predetermined distance from the outer surface of the support plate.

By the above solving means, the present invention is to make it easy to adjust the tension of the conveyor chain configured in the chain conveyor, the advantage that can be prevented in advance the problems caused by the conveyor chain tension reduction and the resulting sagging of the conveyor There is this.

In particular, the present invention has the advantage that it is possible to automatically adjust the tension of the conveyor chain in real time, while ensuring the structural stability of the conveyor system by adding a separate tension control device without changing the existing conveyor system.

Through this, the present invention can be easily applied to a conveyor system that is newly manufactured, as well as the existing conveyor system, there is an advantage that can greatly improve the applicability of the product and the expandability of the application field.

In addition, the present invention is a two-way conveyor system configured to enable bi-directional conveyance, by preventing the tension drop (fall occurs) of the conveyor chain generated from the drive sprocket wheel at the time when the circulation direction of the conveyor chain is switched, There is an advantage to enable a stable two-way operation.

In particular, the present invention is not the electronic control method according to the operation of many sensors, by applying a mechanical control method that can adjust the tension in real time by the structural characteristics, the advantage that can minimize the configuration required for real-time tension control of the conveyor chain There is this.

In addition, the present invention can greatly reduce the installation cost and operating cost by applying a machine control method, there is an advantage that can be easily maintained.

Thus, it is possible to improve reliability and competitiveness in the field of conveyor systems, in particular chain conveyor systems, as well as in the related and related fields.

1 is a block diagram showing an embodiment of a two-way conveyor system having a tension control function according to the present invention.
FIG. 2 is a partially enlarged view of FIG. 1.
3 is a flow chart showing an embodiment of a tension control method of a two-way conveyor system according to the present invention.
4 is a flowchart illustrating another embodiment of FIG. 3.
5 is a view for explaining the pressing support module shown in FIG.
6 is an exploded perspective view of FIG. 5.
7 is a partially enlarged view illustrating the function of FIG. 5.
FIG. 8 is a partially enlarged view illustrating another embodiment of FIG. 5.

An example of a two-way conveyor system having a tension control function according to the present invention can be applied in various ways. Hereinafter, the most preferred embodiment will be described with reference to the accompanying drawings.

1 is a block diagram showing an embodiment of a two-way conveyor system having a tension control function according to the present invention, Figure 2 is a partially enlarged view of FIG.

Referring to Figure 1, the two-way conveyor system (S) having a tension control function is configured so that the conveyor chain 10 is wound around the main wheel 20 and the auxiliary wheel 30 configured to be spaced apart a predetermined distance (transport distance) is circulated do. Here, the main wheel 20 may include a sprocket wheel that is rotated in both directions by the power, and the auxiliary wheel 30 is an idle sprocket wheel or pulley that is not powered. And the like.

The drive motor 40 is to rotate the main wheel 20 in both directions, the configuration of the drive motor 40 itself and the coupling relationship with the main wheel 20 can be variously modified according to the needs of those skilled in the art, Of course it is not limited.

Then, the tension control device (A) for adjusting the tension of the conveyor chain 10 is configured on the main wheel 20 side operated by the drive motor 40.

The tension adjusting device (A) is in the process of switching the rotation direction of the main wheel 20, if the deflection of the conveyor chain 10 occurs, as shown in Figure 2, the conveyor chain 10 as one side (lower in Figure 2) Direction to adjust the tension by pressing (box-shaped arrow in FIG. 2), and includes a pressing support module 100 and a supporting wheel 200.

The pressure support module 100 is configured inside the conveyor chain 10 connected in a loop shape, and presses the conveyor chain 10 in an outward direction. A detailed configuration and operation thereof will be described below. Shall be.

The support wheel 200 is arranged to be staggered to the pressure supporting module 100, for example, to be disposed outside the conveyor chain 10 connected in a loop shape to support the conveyor chain 10 inward. It may include an idle sprocket wheel or a pulley.

Hereinafter, in the process of operating the two-way conveyor system (S) described above, it will be described how to adjust the tension of the conveyor chain (10).

3 is a flow chart showing an embodiment of a tension control method of a two-way conveyor system according to the present invention.

First, the driving motor 40 of the two-way conveyor system S shown in FIG. 1 circulates the conveyor chain 10 in one direction according to a process set corresponding to a process in which the two-way conveyor system S is operated. (S100). Here, the drive motor 40 may be controlled by a separate control module (not shown) configured in the conveyor system (S), or may be controlled by a remote administrator terminal.

As described above, when the conveyor chain 10 is circulated in one direction, when the circulation direction of the conveyor chain 10 is changed to the other side according to a set process, the conveyor chain 10 is adjusted to increase the tension applied to the conveyor chain 10. (S200).

More specifically, in the tension control step (S200), as shown in Figure 1 by the tension control device (A) configured on the main wheel 20 side, it is possible to increase the tension applied to the conveyor chain (10).

At this time, the pressing support module 100 of the tension adjusting device (A), using a ratchet pole (Ratchet-Pawl) structure and elastic force, only in one direction (lower direction in Fig. 1), that is, in the direction of increasing the tension only It may be operated to pressurize and movement in the opposite direction (upward in FIG. 1) may be limited.

Thus, when the force applied to the main wheel 20 by the tension of the conveyor chain 10 is reduced, the tension adjusting device (A) is to move at least a portion of the conveyor chain 10 in the lower direction of the main wheel 20 (outer) Direction to increase the reduced tension, so that the conveyor chain 10 can be circulated stably.

On the other hand, in the state in which the tension control device (A) by the instantaneous tension drop as the circulation direction of the conveyor chain 10 is changed, after a certain time elapses, the tension of the conveyor chain 10 is restored to its original state and the tension control device Excessive pressure may be applied to (A).

Such excessive pressure may also adversely affect stable operation in operating the conveyor system (S).

Hereinafter, a method for solving the problem caused by excessive tension increase of the conveyor chain 10 will be described.

4 is a flowchart illustrating another embodiment of FIG. 3.

Referring to Figure 4, after increasing the tension applied to the conveyor chain 10 by the tension control step (S200) shown in Figure 3, corresponding to the time elapsed from the time when the circulation direction of the conveyor chain 10 is converted Thus, the increased tension applied to the conveyor chain 10 can be sequentially reduced (S300).

Through this process, the present invention can maintain the tension of the conveyor chain 10 at a constant level.

On the other hand, as described above, the tension adjusting device (A) for adjusting the tension of the conveyor chain 10 is configured to operate mechanically, in the method of returning the increased tension by the tension adjusting device (A) to its original state. This will be described in detail with reference to FIG. 8 below.

5 is a view for explaining the pressure support module shown in Figure 1, Figure 6 is an exploded perspective view of Figure 5, Figure 7 is a partially enlarged view illustrating the function of FIG.

Referring to Figure 5, the pressure support module 100 of the tension adjusting device (A) includes a guide sphere 110 and the elastic pressing portion 120.

The guide tool 110 guides the movement of the conveyor chain 10 as shown in FIG. 2, and may be formed to correspond to a part of a shape of a pulley such as the support wheel 200 shown in FIG. 2.

The elastic pressing unit 120 presses the guide tool 110 toward the conveyor chain 10 and presses the conveyor chain 10 in an outward direction. The elastic pressing unit 120 may press the conveyor chain 10 by a physical force by elastic force. Can be.

At this time, the pressing support module 100 of the present invention may further comprise a locking portion (Locking) 130 to limit the movement of the guide sphere 110 pressed by the elastic force in the reverse direction of the pressing direction.

Referring to FIG. 6, the elastic pressing unit 120 may include a housing 121, a push rod 122, and an elastic spring 123.

The housing 121 is formed with a space portion 121c which is opened in one side direction (lower right direction in FIG. 6), and has a body 121a having a c-shaped cross section and an open portion of the space portion 121c. It may include a cover 121b coupled to the side.

In this way, the housing 121 is composed of the body 121a and the cover 121b so that the space 121c, the guide hole 121d, the through hole 121e, and the like shown in FIG. 6 are easily formed in the housing 121. It is to be able to form.

In addition, a support bar 121f for guiding the movement of the elastic spring 123 may be configured in the space 121c of the housing 121.

The push rod 122 is coupled to the space portion 121c of the housing 121 and is pressed in one direction (lower right direction in which the space is opened) by an elastic force by the elastic spring 123, and limited to movement on the side surface. The protrusion 122a may be formed.

The movement limiting protrusion 122a is for limiting the movement range of the push rod 122 pressurized by an elastic force and may be configured to be located in the guide hole 121d formed in one side of the housing 121 in the longitudinal direction. .

Therefore, while the movement limiting protrusion 122a reciprocates in the guide hole 121d, the movement range of the push rod 122 may be limited to the length of the guide hole 121d.

The locking unit 130 may include a locking block 131 for limiting the movement of the push rod 122 (the movement in the direction opposite to the direction in which the elastic force is pressed).

The locking part 130 may be inserted into the through hole 121e formed in the housing 121 to be reciprocated, and may be inserted into the locking part 130 by the elastic spring 133 configured in the locking part 130. While being pushed toward the push rod 122, the movement of the push rod 122 may be restricted.

At this time, the locking unit 130 supports the elastic spring 133 on the opposite side (upper in Figure 6) of the locking block 131 so that the elastic force of the elastic spring 133 is completely transmitted to the locking block 131. The support plate 132 may be configured. For example, the support plate 132 may be coupled to the outer surface of the housing 121 as shown in FIG.

On the other hand, the locking block 131 may limit the movement of the push rod 122 by using a friction force, etc., in order to enable more stable and accurate restriction, the ratchet pawl structure described above can be applied. have.

Accordingly, the push rod 122 forms a toothed ratchet portion 122b on at least a portion of the surface (the upper surface in FIG. 6) facing the locking block 131, as shown in the enlarged portion of FIG. 7. can do.

The locking block 131 may have a pawl portion 131b corresponding to the latch portion 122b on at least a portion of the surface facing the push rod 122 (lower surface in FIG. 6).

Due to the ratchet pawl structure, the push rod 122 can be moved in one direction (lower right direction in FIG. 6), and in the other direction (upper left direction in FIG. 6). May be limited.

On the other hand, as described above, it is necessary to release the movement restrictions applied to the push rod 122 as necessary, and will be described in detail below.

FIG. 8 is a partially enlarged view illustrating another embodiment of FIG. 5.

Referring to FIG. 8, the locking unit 130 may further include a locking release knob 134 for releasing the movement restriction of the push rod 122.

The unlocking knob 134 is for pulling the locking block 131 in the opposite direction (upper direction in FIG. 8) on the push rod 122 side as shown in the enlarged portion of FIG. 8, and the connecting bar 134a and the wave. Earth 134b and spacer 134c may be included.

The connection bar 134a is connected to the locking block 131 through the support plate 132, and may be configured to pass through the center of the elastic spring 133 as shown in an enlarged portion of FIG. 8.

The gripper 134b is configured at the end of the connection bar 134a and may be configured to be pulled by a worker by a hand.

At this time, the gripper 134b can be controlled electronically by using a solenoid or a motor in order to enable automatic control, and can be physically controlled using a hydraulic cylinder or a pneumatic cylinder.

The spacer 134c is for spaced apart from the gripper 134b by holding the gripper 134b at an outer surface of the support plate 132 so that an operator can easily hold the gripper 134b. It may be configured to be fixed to the connection bar (134a) of the position.

The two-way conveyor system having a tension control function according to the present invention has been described above. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive.

S: Conveyor System
10: conveyor chain 20: main wheel
30: auxiliary wheel 40: drive motor
A: Tension control device
100: pressure support module
110: guide sphere 120: elastic pressing portion
121 housing 121a body
121b: cover 121c: space part
121d: guide hole 121e: through hole
121f: Support Bar
122: push-rod 122a: movement limiting projection
122b: Ratchet
123: elastic spring
130: locking part 131: locking block
131b: Paul section
132: support plate 133: elastic spring
134: unlocking knob 134a: connecting bar
134b: gripper 134c: spacer
200: support wheel

Claims (10)

A main wheel and at least one auxiliary wheel to which the conveyor chain is circulated;
A drive motor for rotating the main wheel in both directions;
Includes; tension control device for adjusting the tension of the conveyor chain,
The tension control device,
When deflection of the conveyor chain occurs in the process of switching the rotation direction of the main wheel, the conveyor chain is pressed to one side to adjust the tension,
The tension control device,
A pressing support module for pressing the conveyor chain in an outward direction; And
And a support wheel disposed to be staggered to the pressure support module to support the conveyor chain inward.
The pressure support module,
Guide tool for guiding the movement of the conveyor chain; And
And an elastic pressing unit for pressing the guide tool to press the conveyor chain in an outward direction.
The pressure support module,
Further comprising: a locking portion for limiting the movement of the guide in the reverse direction of the pressing direction;
The elastic pressing unit,
A housing having a space formed therein to open in one direction; And
It is coupled to the space portion of the housing and pushed in one direction by the elastic force (Push rod); includes,
The locking unit,
Includes; the locking block to limit the movement of the push rod,
The housing,
Guide holes are formed in one side in the longitudinal direction,
The push rod is,
A movement limiting protrusion located in the guide hole and reciprocating within the guide hole;
The push rod is,
Ratchet (Ratchet) portion is formed on at least a portion of the surface facing the locking block,
The locking block is,
A pawl portion corresponding to the ratchet portion is formed on at least a portion of the surface facing the push rod.
The ratchet portion and the pawl portion are formed of a ratchet pole structure so that the push rod can be moved only in a direction of increasing the tension of the chain,
The housing,
A through hole through which the locking block reciprocates is formed,
The locking unit,
An elastic spring for pressing the locking block toward the push rod; And
And a support plate coupled to the housing to support the elastic spring.
The locking block for pulling the locking block in the opposite direction of the push rod side; is further configured,
The unlocking knob,
A connection bar penetrating the support plate and connected to the locking block;
A gripper configured at an end of the connection bar; And
A spacer spaced apart from the outer surface of the support plate by a predetermined distance;
The housing,
It comprises a body portion having a cross-section of the U-shape formed with the space portion therein and a cover portion coupled to the open side of the space portion,
The guide hole is provided in the longitudinal direction in the cover portion,
The locking block is provided on the upper surface of the body portion is coupled to the through hole penetrated into the space portion,
Inside the space part is provided a support bar for guiding the movement of the elastic spring of the elastic pressing unit,
The support plate is characterized in that coupled to the upper surface of the body portion,
The movement limiting projection is a two-way conveyor system having a tension control function, characterized in that the reciprocating movement in the guide hole, limiting the movement range of the push rod to the length of the guide hole.
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