JP5052951B2 - Belt conveyor and belt tension degree adjusting device - Google Patents

Description

  The present invention relates to a belt conveyor and a belt tension degree adjusting device.

In general, a belt conveyor (hereinafter also simply referred to as “conveyor”) has the following configuration.
At each end of the pair of left and right frames extending in the transport direction, a pair of rollers is provided between the two frames, and an endless belt is stretched across the pair of rollers.
One roller is a driving roller and the other roller is a driven roller.
The belt is generally made of rubber. The upper part of the endless belt is the forward part, and the lower part is the return part.
Then, the belt circulates and moves based on the rotation of the drive roller, and the article (conveyed object) on the belt (outward path portion) is conveyed.

  The conveyor belt needs to be stretched with a predetermined tension (tensile degree). The degree of tension of the belt is determined by the length (circular length) of the endless belt and the distance between the pair of rollers.

The conveyor belt is initially tensioned with a predetermined degree of tension.
However, as the conveyor is used for a long time, the belt (especially in the case of rubber ones) gradually stretches (ie sags).
Thus, the degree of tension of the belt becomes insufficient (the degree of tension becomes small).

If the tension of the belt becomes insufficient, the belt will meander.
That is, the belt is likely to meander, particularly when the belt sags unevenly in the width direction (that is, unevenly from side to side). In addition, even when the belt sags uniformly from side to side, if the center of gravity of the object to be transported placed on the belt (outward path portion) deviates from the center in the width direction of the belt, the belt still meanders. Will be.
If the belt meanders, problems such as a fall of the conveyed object from the belt (outward path portion) or damage to the belt may occur.
For this reason, the conveyor needs a mechanism for adjusting the degree of tension of the belt.

In the conventional conveyor, at least one of the rollers is provided so that the position thereof can be adjusted as follows, and the degree of tension of the belt can be adjusted.
That is, at least one end portion of the pair of left and right frames is formed with a long hole extending along the conveying direction of the conveyor. A male screw is formed at each end of the rotation shaft of the roller or a shaft concentric with the rotation shaft (hereinafter also referred to as “mounting shaft”), and each end of the mounting shaft corresponds to each slot. Is inserted.
Then, on the outside of each frame, a nut is screwed to the male thread at each end of the mounting shaft, and the mounting shaft (rotary shaft) is fixed at a predetermined position.

When adjusting the degree of tension of the belt in the conventional conveyor, the nut screwed to one end of the mounting shaft is loosened, and the one end of the mounting shaft is moved along the long hole. The nut is tightened in a state where the one end of the shaft is located at a predetermined position. The same operation is performed on the other end of the mounting shaft.
Thus, the position of the rotating shaft (mounting shaft) is adjusted, and the degree of tension of the belt is adjusted.

However, the conventional conveyor has the following drawbacks.
That is, as described above, it is complicated to loosen the nut, move the mounting shaft (the end thereof), and tighten the nut.
Further, since the nut is located outside the frame, it is necessary for an operator to perform the work on the outside of the frame. However, the conveyor may be installed near the wall of a facility such as a factory. In this case, the conveyor needs to be moved away from the wall, and the operation is very complicated.

  It is an object of the present invention to provide a belt conveyor and a belt tension degree adjusting device capable of easily adjusting the belt tension degree.

In order to solve the above problems, the invention according to claim 1 is a belt conveyor in which an endless belt is supported by a pair of rollers, and is located on both the left and right sides of the belt, and rotates both rollers. A pair of left and right frames that can be supported and a frame corresponding to at least one of the pair of rollers, and supporting each end of the rotation shaft of the one roller. And a rotating shaft support member movable in a direction approaching and separating from the other roller of the pair of rollers, and provided for each of the frames, and at least substantially parallel to the length direction of the belt. A longitudinal shaft portion that moves in the direction of approaching and separating from the other roller by rotating in the direction around its own axis and rotating around the axis of the shaft. A cross-direction axial member that is provided for each of the lengthwise axial members and that extends in a direction intersecting the lengthwise axial members, and the cross-direction axial member. A rotation conversion transmission mechanism for rotating the longitudinal axial member in the axial direction based on rotation in the direction around the axis, and a space between the two frames or an extension line thereof; possess an operating mechanism for operating for rotating the member about its axis direction is performed, the operation mechanism includes an arm each extending in the distal direction from the cross-axis member, the arm connecting member connecting the arms And the arm connecting member includes a divided arm connecting member connected to each of the arms, and a connecting member that connects the divided arm connecting members so as to be separable and connectable. It is.

In the belt conveyor according to the present invention, when the operation mechanism is operated, the cross-direction shaft-shaped member rotates around the axis, and based on the rotation, the length-direction shaft-shaped member moves around the shaft via the rotation conversion transmission mechanism. Rotation, thereby moving the rotating shaft support member.
Thus, in the belt conveyor of the present invention, the distance between the rollers is easily adjusted, and the degree of tension of the belt is adjusted.
And in the belt conveyor of this invention, since the operation mechanism is provided in the space between both frames or its extension line, even when the frame is located near the wall, the worker can easily perform the above work. it can.

In the belt conveyor of the present invention, since the operation mechanism has arms extending in the centrifugal direction from the respective cross direction axial members, each arm is swung or rotated around each cross direction axial member. Each cross-direction axial member can be easily rotated (including turning), and the belt tension can be easily adjusted.

In the belt conveyor of the present invention, since the operation mechanism has the arm connecting member that connects both arms, both the arms can be simultaneously swung by operating the arm connecting member, and the belt can be easily The degree of tension can be adjusted.

Furthermore, in the belt conveyor of this invention, the following effects can be obtained.
That is, in the belt conveyor of the present invention, in a state where both split arm connecting members are connected by the connecting member (a state where the arm connecting member is formed), both arms are simultaneously swung by operating the arm connecting member. It is possible to easily adjust the degree of tension of the belt to the left and right. In this way, it is possible to easily cope with the case where the belt extends uniformly from side to side.
On the other hand, in a state where the arm connecting member is separated for each divided arm connecting member, each arm can be swung by operating each divided connecting member, and the degree of tension of the belt can be adjusted to the left and right respectively. Can do. Thus, it is possible to cope with a case where the belt extends unevenly on the left and right.
Thus, in the belt conveyor of the present invention, it is possible to appropriately and efficiently adjust the degree of belt tension according to the situation regarding the degree of belt tension (whether the belt extends uniformly to the left and right, etc.). .

The invention according to claim 2 is the belt conveyor of the invention according to claim 1 , wherein the operation mechanism includes the cross-direction axial members between the cross-direction axial members and the arms. The swing in one direction of each arm as a center is transmitted as the rotation in one direction of each cross-direction axial member, and the swing in the other direction of each arm is also transmitted to each cross-direction axial member. Is a belt conveyor having a ratchet mechanism that does not transmit.

The belt conveyor of the present invention, in addition to the advantages of the belt conveyor of the invention according to claim 1, the following advantages are achieved.
That is, in the belt conveyor of the present invention, since the operation mechanism has a ratchet mechanism between each cross-direction axial member and each arm, each cross-direction axial shape is obtained by reciprocatingly swinging each arm. The member can be rotated in one direction, and the tension degree of the belt can be easily adjusted.

The invention according to claim 3 is the belt conveyor of the invention according to claim 1 or 2 , wherein the rotation conversion transmission mechanism includes a first bevel gear provided on the lengthwise axial member, It is a belt conveyor which has a 2nd bevel gear provided in the cross direction axial member corresponding to the 1st bevel gear.

In the belt conveyor of the present invention, the following operational effects can be obtained in addition to the operational effects of the belt conveyor according to the first or second aspect .
That is, in the belt conveyor according to the present invention, the first bevel gear rotates with the rotation of the second bevel gear, and therefore, the lengthwise axial shape is easily obtained based on the rotation around the axis of the cross-direction axial member. The member can be rotated about the axis. Thus, the effect of the invention according to claim 1 or claim 2 can be obtained with certainty.

The invention according to claim 4 is an adjusting device that adjusts the degree of tension of the belt conveyor in which the endless belt is supported by a pair of rollers, the belt conveyor being positioned on both the left and right sides of the belt. A pair of left and right frames that rotatably support the rollers and at least one of the pair of rollers. A rotating shaft support member that supports each end of the belt and is movable in a direction approaching and separating from the other roller of the pair of rollers, and each of the frames. It has an axial shape extending at least substantially parallel to the length direction, and rotates around its own axis so that each rotary shaft support member approaches and separates from the other roller. A longitudinal axis member that is moved in the direction of movement, and the adjustment device is provided for each of the longitudinal axis members and intersects with each of the longitudinal axis members. An operation that is provided in a space between the cross-direction axial members extending in the direction of the axis and the frames or the extension lines thereof, and an operation for rotating the cross-direction axial members around the axis is performed. The operating mechanism has an arm extending in the centrifugal direction from each cross-direction axial member, and an arm connecting member that connects both the arms, and the arm connecting member is attached to each arm. Each of the divided arm connecting members connected to each other, and a connecting member that connects the two divided arm connecting members so as to be separable and connectable, and based on the rotation in the direction around the axis of the cross-direction axial member, Longitudinal axis Through a rotation conversion transmission mechanism for rotating the timber about its axis, is intended to be connected to the belt conveyor, a belt tensioning degree adjusting device for a belt conveyor.

In the belt tension degree adjusting device for a belt conveyor according to the present invention, the belt tension adjusting device is connected to the belt conveyor and operated in the same manner as the belt conveyor (the operation mechanism thereof) according to the first aspect. The same effects as the invention can be obtained.
Note that matters added to the invention according to claim 1 in the invention according to claim 2 or claim 3 can also be added to the invention according to claim 4 .

[ Reference form ]
Next, one reference embodiment related to the present invention will be described with reference to FIGS.
As shown in FIG. 1, the belt conveyor includes a pair of left and right frames 10, a pair of rollers 20 a and 20 b and a belt 30 in the front-rear direction (conveyance direction).

As shown in FIGS. 1 to 3, the pair of left and right frames 10 extend in the conveying direction of the conveyor.
Each frame 10 includes a lower frame member 11 and an upper frame member 12, and the lower frame member 11 and the upper frame member 12 are connected by a vertical frame member 13.
The left and right frames 10 are connected by a plurality of connecting members 14 (FIG. 3).

One of the pair of rollers (20a, 20b) is a driving roller 20a, and the other is a driven roller 20b.
Each roller 20a, 20b is rotatably supported by both frames 10 between both frames 10.
That is, each end of the rotating shaft 21 (FIGS. 2 and 3) of the driving roller 20a is rotatably supported at one end of each frame 10, and the rotating shaft 21 (FIGS. 1 to 3) of the driven roller 20b. ) Is supported at the other end of each frame 10.
The drive roller 20a (its rotating shaft 21) is provided with a drive mechanism 22 (FIGS. 1 and 2) mainly composed of a motor, and is capable of driving rotation.
The driven roller 20b is not provided with a drive mechanism (22), and is driven to rotate by the circulation of the belt 30 based on the drive rotation of the drive roller 20a.

The belt 30 (FIGS. 1 to 3) is formed of rubber.
The belt 30 has an endless shape and is stretched across a pair of rollers (a driving roller 20a and a driven roller 20b).
Of the endless belt 30, a portion located on the upper side (a portion between the upper end portion of the driving roller 20a and the upper end portion of the driven roller 20b) is the forward path portion 31a, and a portion located on the lower side (the driving roller 20a). The portion between the lower end portion of the roller and the lower end portion of the driven roller 20b) is the return path portion 31b. A plurality of auxiliary rollers (not shown) are provided between the frames 10 corresponding to the forward path portion 31 a of the belt 30. This prevents the forward path portion 31a of the belt 30 (the portion between the driving roller 20a and the driven roller 20b) from sagging downward due to its own weight.
As the belt 30 circulates and moves based on the drive rotation of the drive roller 20a, the article (conveyed object) placed on the belt 30 (the forward path portion 31a) is conveyed.

One roller (driven roller) 20b is provided so that its position can be adjusted as follows.
As shown in FIGS. 1 to 4, the portion on the driven roller 20 b side of the pair of left and right frames 10 is a position adjustment frame 40.
Each position adjustment frame 40 is formed of a position adjustment upper frame material 42 and a vertical frame material 43 that connects the lower frame material 11 (described above).
The upper frame material 42 for position adjustment extends in parallel to the lower frame material 11.

A bearing support member 50 (corresponding to the rotating shaft support member of the present invention) is disposed between the lower frame member 11 and the upper frame member 42 for position adjustment.
Each bearing support member 50 is provided with a bearing 55. Each bearing 55 supports each end of the rotating shaft 21 of the driven roller 20b.
The bearing support member 50 is arranged to be movable in the length direction of the conveyor (position adjustment frame 40) as follows.

The lower edge portion of the bearing support member 50 is a straddling portion 51 (FIGS. 1 and 4). The straddling portion 51 is slidably fitted to the lower frame material 11 so as to straddle the lower frame material 11.
The upper frame material 42 for position adjustment is in the shape of a square pipe that is open at the bottom. The upper edge portion of the bearing support member 50 enters the position adjusting upper frame member 42 through the opening 44 (FIG. 4).
Thus, the bearing support member 50 is movable along the length direction of the position adjustment frame 40 (the lower frame member 11 and the position adjustment upper frame member 42).

As shown in FIGS. 2 to 4, each position adjusting upper frame member 42 is provided with a shaft member 60 (corresponding to a longitudinal-direction shaft member of the present invention).
The shaft member 60 extends along the length direction of the position-adjusting upper frame member 42 (that is, extends in parallel with the length direction of the belt 30), and each end thereof is connected to the vertical frame member 43. It penetrates and is exposed to the outside from the upper frame material 42 for position adjustment.
A base end portion (exposed portion) of the shaft member 60 is a large-diameter retaining portion 61.
A bevel gear 65 (corresponding to the first gear of the present invention) is provided at the tip of the shaft member 60.
A portion (exposed portion) in the vicinity of the bevel gear 65 of the shaft member 60 is a large-diameter retaining portion 62.
Thus, the shaft member 60 is supported so as to be able to rotate about its own axis in a state in which the shaft member 60 is prevented from coming off and is prevented from moving in its own length direction.
As shown in FIG. 4, a male screw 64 is formed in the most part of the shaft member 60.

As shown in FIG. 4, in the vicinity of the upper edge of the bearing support member 50, a through-hole shaped female screw 54 is formed corresponding to the shaft member 60 (male screw 64). The shaft member 60 (male screw 64) is screwed into and penetrates the female screw.
Thus, the bearing support member 50 moves in the length direction of the conveyor (position adjustment frame 40) as the shaft member 60 rotates (rotation in the direction around its own axis).

As shown in FIGS. 1 to 4, a belt tension degree adjusting device (hereinafter also simply referred to as “adjusting device”) 70 is attached to and detached from a pair of left and right position adjusting frames 40 (a pair of left and right bevel gears 65). Can be attached (connected). The adjusting device 70 may be always attached, or may be attached only when necessary.
The adjusting device 70 has a substantially bilaterally symmetric structure, and includes a pair of mounting portions 75, a pair of arms 90, and an arm connecting rod 100 (arm connecting member).
The pair of arms 90 and the arm connecting rod 100 (arm connecting member) correspond to the operation mechanism of the present invention.

As shown in FIGS. 1 and 4 to 6, each attachment portion 75 corresponds to each upper frame member 42 for position adjustment.
Each attachment portion 75 has a pair of vertical plate portions (an outer vertical plate portion 76a and an inner vertical plate portion 76b). The pair of vertical plate portions 76 a and 76 b are connected by an upper connecting plate material 77. The distance between the pair of vertical plate portions 76a and 76b corresponds to the width of the upper frame material 42 for position adjustment.
Each mounting portion 75 has a pair of vertical plate portions 76a and 76b sandwiching the position adjusting upper frame member 42, and the upper connecting plate member 77 is placed on the position adjusting upper frame member 42. The frame member 42 is detachably fixed with a known structure.

Each attachment portion 75 is provided with a shaft member 80 (corresponding to the cross-direction axial member of the present invention).
Each shaft member 80 extends in the width direction of the conveyor. That is, it extends in a direction perpendicular to each shaft member 60.
One end portion of each shaft member 80 is rotatably supported by the outer vertical plate portion 76a. A portion on the other end side of each shaft member 80 penetrates the inner vertical plate portion 76b in a rotatable manner.

A bevel gear 85 (corresponding to the second bevel gear of the present invention) is provided on each shaft member 80 (the portion between the two vertical plate portions 76a and 76b). The bevel gear 85 is provided corresponding to the bevel gear 65 of the shaft member 60, and the bevel gear 85 meshes with the bevel gear 65 (the bevel gear 65 and the bevel gear 85 are included in the rotation conversion transmission mechanism of the present invention. Applicable).
For this reason, each shaft member 80 rotates in the direction around its own axis, so that each shaft member 60 (FIG. 4) rotates in the direction around its own axis. The driven roller 20b moves in the length direction of the conveyor.
As each shaft member 80 rotates in one direction, the driven roller 20b (bearing support member 50) moves away from the drive roller 20a. On the other hand, as each shaft member 80 rotates in the other direction, the driven roller 20b (bearing support member 50) moves in a direction approaching the drive roller 20a.

As shown in FIGS. 1, 5, and 6, the other end portion of each shaft member 80 (exposed from the inner vertical plate portion 76 b as described above) has a ratchet mechanism portion 95 having a known structure ( The arm 90 is provided via a corresponding ratchet mechanism of the present invention.
For this reason, each arm 90 reciprocally swings about its own base end portion, whereby each shaft member 80 rotates only in a predetermined direction.
The ratchet mechanism unit 95 also has a rotation direction switching unit (not shown) having a known structure.
For this reason, according to the switching state in the rotation direction switching unit, each shaft member 80 rotates only in one direction or rotates in the other direction based on the reciprocal swing of each arm 90.

  As shown in FIG. 1, the distal ends of both arms 90 are connected by an arm connecting rod 100. Each end portion of the arm connecting rod 100 is connected to the tip end portion of each arm 90 so as to be relatively rotatable about its own axis.

Next, the usage method and effect of this belt conveyor will be described.
When the belt 30 is stretched by use for a long time and the degree of tension is reduced, the rotation direction switching portion of each ratchet mechanism portion 95 (FIGS. 5 and 6) is in a predetermined switching state. As shown in FIGS. 1 and 4 to 6, an operator reciprocates the arm connecting rod 100 in an arc shape, and reciprocally swings each arm 90.
Thereby, each shaft member 80 rotates only in a predetermined direction, and each shaft member 60 (FIG. 4) rotates only in a predetermined direction via the bevel gear 85 and the bevel gear 65.
Accordingly, each bearing support member 50 moves in a direction away from the drive roller 20a, and the driven roller 20b moves in a direction away from the drive roller 20a.
Thus, the distance between the driving roller 20a and the driven roller 20b is longer than before, and the degree of tension of the belt 30 is increased.

Further, when the tension of the belt 30 becomes too large due to the above-described work or the like, the worker switches the rotation direction switching unit of the ratchet mechanism unit 95 (FIGS. 5 and 6) to a switching state opposite to the above. After that, as shown in FIGS. 1 and 4 to 6, the arm connecting rod 100 is reciprocated in an arc shape to reciprocate each arm 90.
Thereby, each shaft member 80 rotates only in one direction opposite to the above, and each shaft member 60 (FIG. 4) rotates only in one direction opposite to the above via the bevel gear 85 and the bevel gear 65. To do.
Thereby, each bearing support member 50 moves in a direction approaching the driving roller 20a, and each end portion of the rotating shaft 21 of the driven roller 20b moves in a direction approaching the driving roller 20a.
Thus, the distance between the driving roller 20a and the driven roller 20b is shorter than before, and the tension of the belt 30 is reduced.

Thus, in this conveyor, the tension degree of the belt 30 can be easily adjusted by performing an operation of reciprocating the arm connecting rod 100 in an arc shape.
And this operation | work can be performed while an operator is located between a pair of flame | frame 10 and its extension line. For this reason, even if this conveyor (frame 10) is installed near the wall, the work of adjusting the degree of tension of the belt 30 can be easily performed.
Moreover, in this conveyor, the both ends of the rotating shaft 21 of the driven roller 20b simultaneously move the same distance in the same direction by reciprocating the arm connecting rod 100 in an arc shape. For this reason, it is not necessary to adjust the position for each end of the rotating shaft 21 of the driven roller 20b, and the degree of tension of the belt 30 can be adjusted efficiently.

[Embodiment]
Next, an embodiment of the present invention will be described with reference to FIGS. 7-9. This embodiment is a modification of the reference embodiment will be described only the points of difference from the reference form.

In this belt conveyor (adjustment device 70), the arm connecting rod 120 (corresponding to the arm connecting rod 100 of the above-mentioned reference form ) is connected to one arm 90a (90) side and the other arm 90b (90) side. It is divided into
That is, the arm connecting rod 120 (arm connecting member) is divided into a pair of divided arm connecting rods 110a and 110b (divided arm connecting members), and both the divided arm connecting rods 110a and 110b are separated by the connecting member 130. It is combined so that it can be separated and combined.

  As shown in FIGS. 7 and 9, a concave portion 115a is formed at the tip of one split arm connecting rod 110a, and the tip of the other split arm connecting rod 110b is correspondingly convex. A portion 115b is formed. And the convex part 115b fits with the concave part 115a, and it makes it one rod shape.

The coupling member 130 has a cylindrical shape. The inner diameter of the coupling member 130 corresponds to the outer diameter of both split arm connecting rods 110a and 110b. As shown in FIGS. 7A and 7C, the coupling member 130 is fitted to both the split arm connecting rods 110a and 110b so as to be movable along the length direction thereof.
At the same time, the coupling member 130 is maintained at the position (referred to as the “coupling position”) of the distal end portions (portions where the concave portions 115a and the convex portions 115b are formed) of the split arm connecting rods 110a and 110b. And a state in which the split arm connecting rods 110a and 110b can be displaced along the length direction.

That is, the coupling member 130 is maintained in the position by a well-known mechanism in the state located in the coupling position. By performing a predetermined operation, being maintained at that position is released.
For example, when a female thread is formed on the inner surface of the coupling member 130 and a corresponding thread is formed on the outer surface of the distal end portion (or almost all portions) of the split arm connecting rods 110a and 110b, The coupling member 130 is maintained at the coupling position in a state in which the female screws are screwed into both the male screws, and the coupling member 130 is rotated, whereby the screwing of the female screws with respect to the both male screws is disengaged, and the coupling member 130. Is released from being maintained in the coupling position.

The usage method and operation effect specific to this belt conveyor are as follows.
When the belt 30 (see FIG. 1 and the like) is moved uniformly in the left and right directions, the ends of the rotation shaft 21 of the driven roller 20b are moved in the same direction by the same length, as shown in FIGS. As shown in FIG. 8, the concave portion 115 a is fitted to the convex portion 115 b, the coupling member 130 is positioned at the coupling position, and both the split arm coupling rods 110 a and 110 b are coupled. Thus, one arm connecting rod 120 is formed.
Then, the arm connecting rod 120 is operated as described for the arm connecting rod 100 in the reference embodiment , and the respective ends of the rotating shaft 21 of the driven roller 20b are simultaneously moved in the same direction by the same length, and the driven roller 20b. Adjust the position.

On the other hand, when the position of each end of the rotating shaft 21 of the driven roller 20b is to be adjusted, such as when the belt 30 extends unevenly from side to side, the following is performed.
That is, first, as shown in FIGS. 7A to 7C, the coupling member 130 is displaced from the coupling position to a position where only the one split arm coupling rod (110a or 110b) is fitted.
In this state, as shown in FIG. 9, the concave portion 115a and the convex portion 115b are separated, and the two split arm connecting rods 110a and 110b are separated.
Then, the position adjustment is performed for each end of the driven roller 20b by reciprocating the divided arm connecting rods 110a and 110b in an arc shape.
Thus, even when the belt 30 extends unevenly from side to side, the degree of tension of the belt 30 can be adjusted appropriately.

  It should be noted that the above is merely an embodiment of the present invention, and it is needless to say that the present invention can be implemented with various modifications based on the knowledge of those skilled in the art.

  For example, the ratchet mechanism (95) is not necessarily provided. In that case, the arm (90) is operated so as to rotate in a predetermined direction.

It is a disassembled perspective view which shows the belt conveyor of one reference form of this invention. It is a disassembled side view which shows the belt conveyor of one reference form of this invention. It is an exploded vertical sectional view (side sectional view) showing a belt conveyor of one reference form of the present invention. It is a side view (partially broken) which expands and shows the principal part of the belt conveyor of one reference form of this invention. Rollers and belts are indicated by two-dot chain lines for convenience. It is a perspective view which expands and shows the principal part of the belt conveyor of one reference form of this invention. It is a perspective view which expands and shows the principal part of the belt conveyor of one reference form of this invention. It is the figure seen from the direction different from FIG. It is a figure which shows a part (part of adjustment apparatus) of the belt conveyor of one Embodiment of this invention. (A) is a top view of the state which has a coupling member in the position for coupling | bonding. (B) is sectional drawing of (a). (C) is a top view of a state in which the coupling member is in a position to be fitted only to one split arm connecting rod. It is a perspective view which shows the state with which the division | segmentation arm connecting rod was couple | bonded. It is a perspective view which shows the state from which the division | segmentation arm connecting rod was isolate | separated.

10 Frame 20a Driving roller (roller)
20b Followed roller (roller)
30 belt 50 bearing support material (rotating shaft support member)
60 shaft material (axial member in the longitudinal direction)
65 Bevel gear (first bevel gear) (rotation conversion transmission mechanism)
70 adjustment device 80 shaft material (cross-direction axial member)
85 Bevel gear (second bevel gear) (rotation conversion transmission mechanism)
90 arm (operating mechanism)
95 Ratchet mechanism (Ratchet mechanism)
100, 120 Arm connecting rod (arm connecting member) (operation mechanism)
110a, 110b Split arm connecting rod (split arm connecting member)
130 coupling member

Claims (4)

A belt conveyor in which an endless belt is supported by a pair of rollers,
A pair of left and right frames that are positioned on the left and right sides of the belt and rotatably support the rollers;
Each of the pair of rollers is provided for each of the frames corresponding to at least one of the rollers, supports each end of the rotation shaft of the one roller, and the other of the pair of rollers. A rotating shaft support member movable in a direction approaching and separating from the roller of
It is provided for each of the frames, has an axial shape extending at least substantially parallel to the length direction of the belt, and rotates the rotation shaft support member with respect to the other roller by rotating around its own axis. A longitudinal axial member that moves in the direction of approaching and separating,
An intersecting axial member that is provided for each longitudinal axial member and has an axial shape extending in a direction intersecting the longitudinal axial member;
A rotation conversion transmission mechanism for rotating the longitudinal axial member in the axial direction based on rotation in the axial direction of the intersecting axial member;
The two frames or provided in a space between its extension, possess an operating mechanism operation is performed for rotating the cross-axis member in the direction about the axis,
The operating mechanism includes an arm extending in the centrifugal direction from each cross-direction axial member, and an arm connecting member that connects the arms.
The arm connecting member has each divided arm connecting member connected to each arm, and a connecting member that connects both the split arm connecting members so as to be separable and connectable.
belt conveyor. The belt conveyor according to claim 1 ,
The operation mechanism is configured to cause one-way swinging of each arm around each cross-direction axial member between each cross-direction axial member and each arm. It has a ratchet mechanism that transmits the rotation in one direction and also does not transmit the swing in the other direction of the arms to the cross-direction axial members.
belt conveyor. The belt conveyor according to claim 1 or 2 ,
The rotation conversion transmission mechanism includes a first bevel gear provided on the lengthwise axial member and a second bevel gear provided on the crosswise axial member corresponding to the first bevel gear. Is,
belt conveyor. An adjusting device that adjusts the degree of tension of the belt conveyor of which the endless belt is supported by a pair of rollers,
The belt conveyor is
A pair of left and right frames that are positioned on the left and right sides of the belt and rotatably support the rollers;
Each of the pair of rollers is provided for each of the frames corresponding to at least one of the rollers, supports each end of the rotation shaft of the one roller, and the other of the pair of rollers. A rotating shaft support member movable in a direction approaching and separating from the roller of
It is provided for each of the frames, has an axial shape extending at least substantially parallel to the length direction of the belt, and rotates the rotation shaft support member with respect to the other roller by rotating around its own axis. And a longitudinal axial member that moves in the direction of approaching and separating,
The adjustment device is
An intersecting axial member that is provided for each longitudinal axial member and has an axial shape extending in a direction intersecting the longitudinal axial member;
An operation mechanism that is provided in a space between the two frames or an extension line thereof and that performs an operation for rotating the cross-direction axial member in a direction around the axis;
The operating mechanism includes an arm extending in the centrifugal direction from each cross-direction axial member, and an arm connecting member that connects the arms.
The arm connecting member has each divided arm connecting member connected to each arm, and a connecting member that connects the both divided arm connecting members so as to be separable and connectable.
It is connected to the belt conveyor via a rotation conversion transmission mechanism that rotates the longitudinal axial member in the axial direction based on rotation of the intersecting axial member in the axial direction. ,
Belt tension adjustment device for belt conveyors.

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