JP4219117B2 - Belt conveyor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a small size belt conveyor, and more particularly, to a conveyor that facilitates unloading of a conveyor belt by a belt backside friction drive system.
[0002]
[Prior art]
The normal belt conveyor is driven by contacting the drive pulley with the back of the endless belt and applying tension to the belt with a tension roller. Therefore, the belt must be removed without disassembling the drive support mechanism when replacing or cleaning the belt. I can't. For this reason, it is known that the drive pulley is brought into contact with the belt surface to facilitate belt removal. For example, in Japanese Utility Model Laid-Open No. 3-53916, a driving pulley and a tension pulley at the lower part of the frame are provided, the belt surface is brought into contact with the driving pulley, and the belt is formed in an S shape between the driving pulley and the tension pulley. I try to drive it.
Japanese Patent Laid-Open No. 2000-211173 applies a belt between the end roller and the head roller of the conveyor body, and provides a driving roller in the middle part of the conveyor body, and a belt is applied to the outer periphery on the lower surface side of the driving roller to drive A snubber roller support that is urged to rotate toward the belt on the drive roller side is arranged before and after the upper side of the roller. When using the snubber roller support, the belt is squeezed by the snubber roller and pressed against the drive roller. When the belt is removed, the support is removed from the conveyor body. What is made to do is disclosed.
[0003]
[Problems to be solved by the invention]
However, as described above, when the snubber roller support that is urged to rotate toward the belt on the drive roller side is disposed and the snubber roller support is separated from the conveyor body when the belt is removed, the belt removing operation becomes complicated, The safety of work under belt tension is not ensured.
SUMMARY OF THE INVENTION An object of the present invention is to provide a conveyor in which the conveyor belt can be easily put on and off by the belt back surface drive system.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, a drive unit including a drive motor, a drive pulley, and a throttle pulley is disposed at a substantially central portion of the frame, and the drive pulley is disposed at a lower portion. In the conveyor that runs the belt with the back of the belt pressed against the drive pulley by a pulley, a throttle pulley is arranged on one side of the drive pulley and a loose throttle pulley is arranged on the other side, and the throttle pulley is opened on both side plates of the drive unit. The ends of both shafts are placed and supported by two take-up blocks inserted into the long holes, and the shaft of the loose throttle pulley is placed in a plane on the return belt return side with the loose throttle pulley shaft as a fulcrum. When the belt is removed, it is supported by a catch clip that can be pivoted at a predetermined angle and the other end can be freely detached from the side plate. , Wherein after releasing the engagement side catch clip loosen throttle pulley shaft, to allow for removing belt by causing it to pivot in a horizontal plane of the lower return side belt around the one axial end slackened belt It is a belt conveyor.
[0005]
2. The belt conveyor according to claim 1, wherein the loosely-drawn pulley has one end of the loosely-drawn pulley shaft supported by a rod end bearing or a ball joint provided on one side plate of the drive unit. is there. Claim 3, the loosening diaphragm pulley, the end member extending perpendicular to the one side plate of the drive unit at one end of the loosening diaphragm pulley shaft is provided, the feeder horizontal surface of the return belt the loosened throttle pulley shaft to the end member 2. The belt conveyor according to claim 1 , wherein a bearing member rotatably supported inside is attached to one side plate of the drive unit .
[0006]
According to a fourth aspect of the present invention, in the loose throttle pulley, an end member extending perpendicularly to one side plate of the drive unit is provided at one end of the loose throttle pulley shaft, and the end member is disposed between the one side plate of the drive unit and the end member. a belt conveyor according to claim 1, characterized in that fitted with hinge a predetermined angle pivotally supported in the horizontal plane of the feed side of the return belt the loosened throttle pulley shaft side as a fulcrum. According to a fifth aspect of the present invention, a U-shaped groove or a bayonet joint groove is formed in the other side plate of the loosely-drawn pulley, and the shaft is inserted into the U-shaped groove and the shaft end is locked by a catch clip. The belt conveyor according to claim 1.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 is a front view of a belt conveyor showing an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a rear view of FIG.
This conveyor is provided with a drive unit 6 including a drive motor 10, a drive pulley 11, and a squeezing pulley approximately at the center of the conveyor frame 1, and the drive pulley 11 is pressed against the back surface of the conveyor belt 5 to run the belt. In addition, the conveyor frame 1 is cantilevered by the leg unit 4, and the drive motor 10 is supported by the cantilever side plate 8 extending above the frame to allow the belt to be removed.
A throttle pulley 17 is arranged on one side of the drive pulley 11, that is, on the upstream side of the return side belt, and a loose throttle pulley 18 is arranged on the other side. As will be described later with reference to FIGS. 5 to 9, the shaft 19 of the loosening pulley 18 can turn the loosening pulley 18 by a predetermined angle within the lower plane on the feeding side of the return side belt 5 b with one shaft end 19 a as a fulcrum. The other shaft end 19b is detachably hooked to the side plate 9.
The leg unit 4 has a U-shape when viewed from the side (FIG. 4), the upper side a is fixed to a conveyor frame (hereinafter simply referred to as a frame) 1, and several adjuster feet 15 are provided on the lower side b for installation. Although the illustrated example shows a case where the whole is cantilevered by one leg unit, two or more leg units may be used. In the figure, reference numeral 2 is a head pulley, 3 is a tail pulley, 5a is a forward side belt, and 5b is a return side belt.
[0008]
A mounting base 23 is fixed to one side surface of the frame 1, and a cantilever side plate 8 extending above the frame is attached via brackets 24 and 24. The drive motor 10 is placed horizontally on the upper part of the cantilever side plate 8, while the bearing 7, 7 is provided on the inner wall of the side plate 9 facing the mounting base 23 of the cantilever side plate 8 and the drive pulley 11 is placed sideways. Mount. Further, the drive unit is configured by putting the chain 20 between the sprocket 21 fixed to the motor output shaft and the sprocket 22 fixed to the shaft of the drive pulley 11 (FIGS. 1 and 5).
The drive motor 10 is provided with a motor cover 13, and a chain cover 14 is attached to an upper portion of the cantilever side plate 8 in the chain 20. In FIG. 5, reference numeral 26 is a bottom plate of the drive unit 6, 16 Ru Super knob der for attaching the bottom plate or the like.
In the illustrated embodiment, a drive unit 6 including a drive motor, a drive pulley, and an aperture pulley is provided at the approximate center of the frame 1 that is cantilevered by the leg unit 4, and the drive motor 10 is supported by a cantilever side plate that extends to the top of the frame. However, the present invention is not limited to this, and the frame 1 may be changed to both-side support by the leg unit 4, or the drive motor 10 may be provided at the lower part of the frame.
[0009]
6 is an enlarged side view of the throttle pulley and the loosely drawn pulley mounting portion, FIG. 7 is an enlarged side view of the throttle pulley mounting portion, FIG. 8 is a plan view of FIG. 7, and FIG. 9 is an enlarged front view of the catch clip mounting portion. .
The throttle pulley 17 is supported at its shaft end by a take- up block 27 inserted into a long hole formed in the side plates 8 and 9, and adjusts the degree of belt throttle by the advance and retreat of the take-up guide 28. The loosening / reducing pulley 18 is supported on a shaft 19 so that the pulley is rotatable. A shaft end 19a is supported on one side plate 8 by a rod end bearing or a ball joint 30, and the other side plate 9 is supported. A catch clip 35 is disposed on the other shaft end 19 b inserted through the shaft 9, and the shaft end 19 b is detachably hooked to the side plate 9. It said rod-end bearings or ball joint 30 is held by the rod-end bearings mounting member 31 and the press even material 32 (FIG. 6).
The catch clip 35 includes a catch clip attachment member 36, a catch clip fitting attachment member 37, a lever 38, a spring lock 38a, and a hook 39, similar to those used for opening and closing a lid, a door, and the like. The catch clip attachment member 36 is bolted to the side plate 9, the catch clip fitting attachment member 36 is bolted to the side plate 9, and the catch clip fitting attachment member 37 is fixed to the shaft end 19b. FIG. 9 shows that the tip of the spring lock 38a is engaged with the hook 39 and the catch clip 35 is in the locked state, and the unlocked state is obtained by releasing the engagement of the spring lock 38a with the hook 39. become.
[0010]
During normal operation, a predetermined belt tension is applied by the throttle pulley, and the belt is driven by the friction drive to the belt back surface by the drive pulley when the motor is started.
The shaft 19 of the loosening pulley 18 is locked by a catch clip 35 during the belt running operation, and cooperates with the throttle pulley 17 to apply a constant tension to the belt .
When the belt is removed, the other end 19b of the pulley shaft 19 is detachably hooked on the side plate 9, so that the catch clip is unlocked and the shaft end 19a is used as a fulcrum as shown in the plan view of FIG. The belt can be loosened and removed by turning the loosening throttle pulley 18 by a predetermined angle in the lower plane on the feeding side of the return side belt 5b.
[0011]
FIG. 10 is an enlarged front view showing a second embodiment of the loosening pulley mounting portion, FIG. 11 is a side view of FIG. 10, FIG. 12 is a plan view of FIG. 10, and FIG.
An end member 40 extending vertically is provided at one end of the shaft 19 of the loosening pulley 18 of this example, and a bearing member 41 that rotatably supports the end member 40 is provided on one side plate mounting base 23. The other end of the loose throttle pulley shaft 19 is locked by a catch clip as before.
Also in this embodiment, at the time of belt removal, after loosening and releasing the locking side of the throttle pulley shaft, the belt is loosened by swiveling in the lower horizontal plane of the return belt around one shaft end. It becomes possible.
[0012]
FIG. 14 is an enlarged front view showing a third embodiment of the loose throttle pulley mounting portion, FIG. 15 is a side view of FIG. 14, and FIG. 16 is a plan view of FIG.
In this example, an end member 42 is provided at one end 19a of the loosening pulley shaft, and a catch clip attachment 37 is provided at the other end . A hinge 43 is provided between the end member 42 and the side plate mounting base 23 to support the loosely drawn pulley shaft 19 so that the end member 42 can turn a predetermined angle in the return belt 5b plane with the end member 42 as a fulcrum. Install.
Also in this embodiment, when the belt is removed, the catch clip is disengaged and the locking side of the loosening pulley shaft 19 is released, and then the loosening pulley is returned around the hinge pin 43 at one shaft end. The belt can be removed by swiveling it in the horizontal plane below the side belt and slackening the belt.
[0013]
17 is an enlarged plan view showing a fourth embodiment of the loosening throttle pulley mounting portion, FIG. 18 is a side view of FIG. 17, and FIG. 19 is a side view of the state where the catch clip of FIG. 17 is removed.
A U-shaped groove or bayonet joint groove 44 is formed on the other side plate of the loosening pulley 18, and one end of the shaft 19 is inserted into the U-shaped groove 44 and the other end is locked by a catch clip 35.
When unlocking the loosely-drawn pulley supported by the rod end bearing or the like by the belt tension when the belt is removed, the pulley shaft suddenly reverses around the rod end bearing, causing damage to the operator's fingers. is there. In order to prevent this, the shaft end is inserted into a U-shaped groove formed in the side plate to prevent the shaft end from being reversed. A U-shaped groove or a bayonet joint groove may be formed on the side plate, and the rotation shaft end of the loosening pulley may be applied to each of the above embodiments.
[0014]
【The invention's effect】
As described above, the present invention is provided with a drive unit including a drive motor and a drive pulley substantially at the center of the frame, and a throttle pulley is disposed on one side of the drive pulley and a loose throttle pulley is disposed on the other side, and the back surface of the belt is pressed against the drive pulley. The shaft of the loosening pulley is supported at one end as a fulcrum so that the loosening pulley can be pivoted at a predetermined angle on the return side of the return belt and the other end is detachably hooked on the side plate. After releasing the locking side of the throttle pulley shaft, the belt can be removed safely and easily by turning the loose pulley pulley shaft around one end and turning it in the horizontal plane below the return side belt to loosen the belt. .
[0015]
[Brief description of the drawings]
FIG. 1 is a front view of a belt conveyor showing an embodiment of the present invention.
FIG. 2 is a plan view of FIG.
FIG. 3 is a rear view of FIG. 1 ;
4 is a cross-sectional view taken along line AA in FIG.
5 is a cross-sectional view taken along line BB in FIG.
FIG. 6 is an enlarged front view showing a first embodiment of a loosening pulley mounting portion.
FIG. 7 is an enlarged side view of an aperture pulley mounting portion.
FIG. 8 is a plan view of FIG.
FIG. 9 is an enlarged front view of a catch clip mounting portion.
FIG. 10 is an enlarged front view showing a second embodiment of the loosely-drawn pulley mounting portion.
FIG. 11 is a side view of FIG.
12 is a plan view of FIG.
13 is a right side view of FIG.
FIG. 14 is an enlarged front view showing a third embodiment of the loosening throttle pulley mounting portion.
15 is a side view of FIG.
16 is a plan view of FIG. 14. FIG.
FIG. 17 is an enlarged front view showing a fourth embodiment of the loosening throttle pulley mounting portion.
FIG. 18 is a side view of FIG.
19 is a side view showing a state where the catch clip of FIG. 18 is removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Conveyor frame (frame) 2 Head pulley 3 Tail pulley 4 Leg unit 5 Endless belt 5a Outward side belt 5b Return side belt 6 Drive unit 7 Bearing 8, 9 Side plate 10 Motor 11 Drive pulley 12 Bearing 13 Motor cover 14 Chain cover 15 Adjuster foot 16 Super Knob 17 Throttle Pulley 18 Loose Throttle Pulley 19 Loose Throttle Pulley Shaft 20 Chain 21 Motor Side Sprocket 22 Pulley Side Sprocket 23 Side Plate Mounting Base 24 Bracket 25 End Plate 27 Take Up Block 28 Take Up Guide 30 Rod End Bearing 32 Rod End Bearing Installation Material 33 Presser material 35 Catch clip 36 Catch clip mounting material 37 Catch clip bracket mounting material 38 Lever 38a Spring Lock 39 Hook 40, 42 End member 41 Bearing member 43 Hinge 44 U-shaped groove

Claims (5)

In a conveyor in which a drive unit including a drive motor, a drive pulley, and a throttle pulley is arranged at the lower part of the frame, and the drive pulley is disposed at the lower part, and the belt is driven by pressing the back surface of the belt against the drive pulley.
A throttle pulley is arranged on one side of the drive pulley and a loose throttle pulley is arranged on the other side. The throttle pulley is mounted on both shaft ends by two take-up blocks inserted into long holes formed in both side plates of the drive unit. The shaft of the loose throttle pulley is supported so that the loose throttle pulley shaft can be swung at a predetermined angle within a plane on the return belt feeding side with one end as a fulcrum, and the other end is detachably attached to the side plate. It is locked with a catch clip that can be stopped,
When the belt removed, after releasing the engagement side catch clips of the loosening diaphragm pulley shaft, more belt Remove capable to cause it to pivot in a horizontal plane of the back side belt bottom around the one axial end slackened belt A belt conveyor characterized by that. 2. The belt conveyor according to claim 1, wherein one end of the loosely drawn pulley shaft is supported by a rod end bearing or a ball joint provided on one side plate of the drive unit. The loosening diaphragm pulley, the end member extending perpendicular to the one side plate of the drive unit at one end of the loosening diaphragm pulley shaft provided rotatably the loosening diaphragm pulley shaft to the end member in a horizontal plane of the feeding side of the back belt The belt conveyor according to claim 1 , wherein a bearing member supported on the belt is attached to one side plate of the drive unit . The loosening diaphragm pulley, the provided with an end member extending perpendicular to the one side plate of the drive unit at one end of the loosening diaphragm pulley shaft, between the one side plate and the end member of the drive unit, the end member side as a fulcrum belt conveyor according to claim 1, characterized in that fitted with hinge a predetermined angle pivotally supported in the horizontal plane of the feed side of loosening the diaphragm return belt pulley shaft. According to claim 1, characterized in that the loosening diaphragm Yoo shaped to form a groove or bayonet joint grooves on the other side plate of the pulley, which locks the shaft end after having passed through the shaft to the Yu-groove in the catch clip Belt conveyor.

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