Chain belt conveyor

Abstract

A driving shaft is installed at one end of a machine frame, a driven shaft is installed at the other end of the machine frame, the two ends of the driving shaft and the two ends of the driven shaft are supported on the machine frame through bearings respectively, a driving chain wheel is installed on the driving shaft, and a driven chain wheel is installed on the driven shaft. The conveying chain belt is characterized in that a flat key is installed at the driving shaft end of the driving shaft and inserted into an output hole of the speed reducer, a hole shrinkage section is arranged at the driving shaft end, an expansion sleeve is sleeved on the hole shrinkage section, and the expansion sleeve is sleeved on the expansion sleeve. A plurality of longitudinal seams are evenly formed in the circumference of the outer end of the expansion sleeve, a conical expansion plug with the inner portion narrow and the outer portion wide is arranged in an inner cavity, and a screw penetrates through a center hole of the conical expansion plug to be screwed into a center screw hole in the end of the driving shaft to expand the expansion sleeve in an output hole of the speed reducer. The chain belt conveyor is reliable in transmission, low in failure rate, long in service life and capable of meeting long-term stable operation of a production line.

Description

TECHNICAL FIELD

[0001] The utility model relates to a conveyor, especially a chain belt conveyor, and belongs to the technical field of conveying equipment. BACKGROUND

[0002] The chain belt conveyor has the advantages of long conveying distance, high conveying efficiency and stable operation, and is often used to convey articles in various industries. The chain belt conveyor is driven by a speed reducer, the input end of the speed reducer is driven by a motor, and the motor is usually installed on one side of the speed reducer, and the motor axis is perpendicular to the output hole axis of the speed reducer.

[0003] The output hole of the speed reducer is connected to the driving shaft of the chain belt conveyor through a flat key, and because it is single-key groove transmission, the key groove is at different circumferential positions, and the flat key is in different stress states, causing the motor to swing.

[0004] In addition, the chain belt conveyor can realize bidirectional transmission, and the start is also relatively frequent, and the additional torque caused by the motor may be opposite to the direction of the output torque of the speed reducer, or may be the same. The flat key of the output end of the speed reducer bears a large alternating stress, and is easily damaged, and the damage is usually caused by looseness between the driving shaft and the output hole of the speed reducer. The traditional solution is to improve the matching precision between the driving shaft, the flat key and the output hole of the speed reducer, which brings certain difficulty to assembly, but still cannot solve the problem. Another solution is to purchase a motor installed on the top of the speed reducer to reduce the distance between the center of gravity of the motor and the output shaft of the speed reducer, which limits the selection range of the driving mechanism, increases the procurement cost, and also limits the installation environment on site. SUMMARY

[0005] This part aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments.

[0006] In view of the above and / or problems existing in the prior art, the utility model is proposed.

[0007] The utility model aims to overcome the problems existing in the prior art, provide a chain belt conveyor, which is reliable in transmission, low in failure rate, long in service life and capable of meeting long-term stable operation of the production line.

[0008] In order to solve the above technical problems, the utility model discloses a chain conveyor, which comprises a rack, a driving shaft is installed at one end of the rack, a driven shaft is installed at the other end of the rack, the two ends of the driving shaft and the driven shaft are respectively supported on the rack through bearings, a driving sprocket is installed on the driving shaft, a driven sprocket is installed on the driven shaft, a conveying chain is wound around the driving sprocket and the driven sprocket, a flat key is installed on the driving shaft end of the driving shaft and is inserted into an output hole of a speed reducer, the driving shaft end is provided with a reduced diameter section, a tight sleeve is sleeved on the reduced diameter section, a plurality of longitudinal slits are uniformly arranged on the outer end head of the tight sleeve, and the inner cavity of the tight sleeve is provided with a tapered expansion plug with a narrow inner cavity and a wide outer cavity, and a screw is screwed into the center screw hole of the driving shaft end through the center hole of the tapered expansion plug to expand the tight sleeve in the output hole of the speed reducer.

[0009] Compared with the prior art, the utility model has the advantages or beneficial effects of the present application, which include: by tightening the screw, the tapered expansion plug is squeezed inward until the outer periphery of the tight sleeve is expanded in the output hole of the speed reducer, the cooperation of the tight sleeve and the tapered expansion plug can not only automatically center, but also ensure that the tight sleeve is tightly matched with the output hole of the speed reducer, so that the driving shaft is locked with the output hole of the speed reducer, and the motor swing caused by the reaction force of different rotation directions in the key transmission of the driving shaft is avoided.

[0010] As a preferred embodiment of the utility model, the inner end face of the tight sleeve is uniformly provided with radial tenons, and each radial tenon is embedded in the embedding groove of the driving shaft end. The cooperation of the radial tenon and the embedding groove can not only position the tight sleeve in the radial direction, but also transmit torque, further improving the stability of the equipment operation and the production line.

[0011] As a further preferred embodiment of the utility model, the rack and the conveying chain extend along a straight line or along an S-shaped curve. That is, the technical scheme is applicable to both straight conveyors and S-bend conveyors.

[0012] As a further preferred embodiment of the utility model, the speed reducer is fixed on the rack through a speed reducer hanging plate, the speed reducer hanging plate is a Z-shaped bent thin plate, the lower part of the speed reducer hanging plate is fixed on the rack through screws, the middle part of the speed reducer hanging plate is bent outward, the upper part of the speed reducer hanging plate is bent upward and has a width greater than the lower part, the upper part of the speed reducer hanging plate is provided with a hanging plate through hole, and the driving shaft end of the driving shaft penetrates out of the hanging plate through hole; the upper part of the speed reducer hanging plate is distributed with bolt holes for fixing the speed reducer, and each bolt hole is distributed on the circumference coaxial with the hanging plate through hole. The Z-shaped bent thin plate of the speed reducer hanging plate is convenient for screw fixing, the Z-shaped bending not only plays the role of a reinforcing rib, improves the strength and torsional resistance of the thin plate, but also maintains good elasticity, and can compensate for the positioning error between the side plate, the speed reducer shell and the driving shaft.

[0013] As another preferred scheme of the utility model, the speed reducer is fixed on the rack through the speed reducer hanging plate, the lower center of the speed reducer hanging plate is fixed on the short shaft, the root of the short shaft is supported on the rack through the bearing; the upper center of the speed reducer hanging plate is provided with a hanging plate through hole, the driving shaft end of the driving shaft is passed out from the hanging plate through hole; the upper part of the speed reducer hanging plate is distributed with bolt holes for fixing the speed reducer, and each bolt hole is distributed on the circumference coaxial with the hanging plate through hole. The speed reducer hanging plate adopts straight thin plate and the lower end can rotate around the short shaft, keeps good elasticity, and can compensate the positioning error between the side plate, the speed reducer shell and the driving shaft.

[0014] As a further preferred scheme of the utility model, the two sides of the rack are respectively provided with side plates parallel to each other, the outer walls of the side plates are respectively fixed with supporting legs supporting on the ground, and the supporting legs on the two sides are connected into a whole through the cross bars.

[0015] As another scheme of the utility model, the utility model provides a chain belt conveyor, which comprises a rack, a driving shaft is installed at one end of the rack, a driven shaft is installed at the other end of the rack, the two ends of the driving shaft and the driven shaft are respectively supported on the rack through bearings, a driving sprocket is installed on the driving shaft, a driven sprocket is installed on the driven shaft, a conveying chain belt is wound between the driving sprocket and the driven sprocket, a driving shaft end of the driving shaft is provided with a key and is inserted into an output hole of a speed reducer, the driving shaft end is provided with a reduced diameter section, a tapered expansion plug with a narrow inner part and a wide outer part is sleeved on the reduced diameter section, a screw is screwed into a central screw hole of the driving shaft end through a central hole of the tapered expansion plug, and the tapered expansion plug is expanded in the output hole of the speed reducer. By tightening the screw, the tapered expansion plug is pressed inward until the outer periphery of the tapered expansion plug is expanded in the output hole of the speed reducer, so that the driving shaft is locked in the output hole of the speed reducer, and motor swing caused by the reaction force of different rotation directions of the key driving of the driving shaft is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor intensity, and the drawings are only provided for reference and illustration, not to limit the utility model. Among them:

[0017] Figure 1 It is the perspective view of the embodiment one of the chain belt conveyor of the utility model;

[0018] Figure 2 It is Figure 1 It is the enlarged view of the driving shaft part in the middle;

[0019] Figure 3 It isFigure 2 The exploded view of the main driven shaft scheme one;

[0020] Figure 4 For Figure 2 The exploded view of the main driven shaft scheme two;

[0021] Figure 5 It is the enlarged view of the main driven shaft part in the second embodiment of the utility model;

[0022] Figure 6 It is the perspective view of the third embodiment of the chain belt conveyor of the utility model;

[0023] In the figure: 1. frame; 1a. side plate; 2. leg; 3. cross bar; 4. main driven shaft; 4a. flat key; 4b. expansion sleeve; 4c. tapered expansion plug; 5. speed reducer; 6. motor; 7. conveying chain belt; 8. speed reducer hanging plate. DETAILED DESCRIPTION

[0024] In the following description of the utility model, the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not mean that the device must have a particular orientation.

[0025] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific drawings. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0027] As Figure 1 , Figure 2The utility model discloses a chain belt conveyor, which comprises a rack 1, side plates 1a parallel to each other arranged on both sides of the rack 1, supporting legs 2 fixed to the outer walls of the side plates 1a to support on the ground, and the supporting legs 2 on both sides are connected into a whole through a cross bar 3. One end of the rack 1 is provided with a driving shaft 4, and the other end of the rack 1 is provided with a driven shaft. The driving shaft 4 and the driven shaft are supported on the side plates 1a of the rack 1 through bearings respectively. The axes of the driving shaft 4 and the driven shaft are parallel to each other. The driving shaft 4 is provided with a driving sprocket, and the driven shaft is provided with a driven sprocket. The driving sprocket and the driven sprocket are wrapped with a conveying chain 7. The rack 1 and the conveying chain 7 form a straight conveying machine extending in a straight line. Under the driving of the driving sprocket, the conveying chain 7 carries the articles to advance, passes through the driven sprocket, enters a return section, and advances towards the driving sprocket, and the cycle is repeated.

[0028] The speed reducer hanging plate 8 is a Z-shaped bent thin plate. The lower part of the speed reducer hanging plate 8 is fixed on the side plate 1a of the rack 1 through screws. The middle part of the speed reducer hanging plate 8 is bent outward. The upper part of the speed reducer hanging plate 8 is bent upward and has a width greater than that of the lower part. The upper part of the speed reducer hanging plate 8 is provided with a hanging plate through hole. The driving shaft end of the driving shaft 4 passes through the hanging plate through hole and is fixedly connected with the output end shaft hole of the speed reducer 5 through a flat key 4a. The outer periphery of the hanging plate through hole is uniformly provided with a plurality of speed reducer fixing holes. Screws pass through the speed reducer fixing holes to fix the shell of the speed reducer 5 on the upper part of the speed reducer hanging plate 8.

[0029] The Z-shaped bent thin plate of the speed reducer hanging plate 8 is convenient for screw fixing. The Z-shaped bending not only plays the role of a reinforcing rib, but also improves the strength and torsional resistance of the thin plate, while still maintaining good elasticity. The Z-shaped bent thin plate can compensate for the positioning error between the side plate 1a, the speed reducer shell and the driving shaft 4. The lower part of the Z-shaped bent thin plate can be fixed on the side plate 1a through screws, and the upper part of the Z-shaped bent thin plate can be fixed on the speed reducer shell through screws, so that the driving shaft 4 is not stuck.

[0030] In addition, although the Z-shaped bent thin plate is relatively thin, it has a relatively wide width and can withstand a large torque in its own plane. The additional torque caused by the installation of the motor 6 on one side of the speed reducer 5 can be completely borne by the Z-shaped bent thin plate, and the additional torque will not be transmitted to the flat key 4a of the driving shaft 4. The reaction force generated by the driving of the driving shaft 4 by the speed reducer 5 through the flat key 4a is also completely borne by the Z-shaped bent thin plate, so that the equipment is not damaged prematurely due to bidirectional transmission or frequent starting.

[0031] As shown in the drawings, Figure 3As shown in the drawings, the driving shaft end of the driving shaft 4 is provided with a flat key 4a and is inserted into the output hole of the speed reducer 5, the driving shaft end is provided with a reduced diameter section, the reduced diameter section is provided with an expansion sleeve 4b, the outer end of the expansion sleeve 4b is uniformly provided with a plurality of longitudinal slits in the circumference and the inner cavity is provided with a tapered expansion plug 4c which is narrow inside and wide outside, and a screw is screwed into the central screw hole of the input shaft end through the central hole of the tapered expansion plug 4c to expand the expansion sleeve 4b in the output hole of the speed reducer 5. The cooperation of the expansion sleeve 4b and the tapered expansion plug 4c can not only play the role of automatic centering, but also ensure that the expansion sleeve 4b is tightly matched with the output hole of the speed reducer 5, can withstand a certain torque, and can further prolong the service life of the flat key 4a.

[0032] The inner end surface of the expansion sleeve 4b is uniformly provided with radial tenons, and each radial tenon is correspondingly embedded in the embedding groove of the input shaft end of the transmission shaft. The cooperation of the radial tenon and the embedding groove can not only position the expansion sleeve 4b radially, but also transmit torque, further improving the stability of the equipment operation and the production line.

[0033] As shown in the drawings, Figure 4 The driving shaft end of the driving shaft 4 is provided with a flat key 4a and is inserted into the output hole of the speed reducer 5, the driving shaft end is provided with a reduced diameter section, the reduced diameter section is provided with an expansion sleeve 4b which is narrow inside and wide outside, and a screw is screwed into the central screw hole of the input shaft end through the central hole of the expansion sleeve 4b to expand the expansion sleeve 4b in the output hole of the speed reducer 5. By tightening the screw, the tapered expansion plug 4c is squeezed inward until the outer circumference of the tapered expansion plug 4c is expanded with the output hole of the speed reducer 5, so that the shaft is completely combined with the output hole of the speed reducer 5 firmly, and no longer relies on the force transmission of the key, solving the problem of different force directions at different positions of the key transmission.

[0034] As shown in the drawings, Figure 5 The speed reducer 5 is fixed on the rack 1 through a speed reducer hanging plate 8, the lower center of the speed reducer hanging plate 8 is fixed on a short shaft, the root of the short shaft is supported on the rack 1 through a bearing; the upper center of the speed reducer hanging plate 8 is provided with a hanging plate through hole, the driving shaft end of the driving shaft 4 passes out of the hanging plate through hole; the upper part of the speed reducer hanging plate 8 is distributed with bolt holes for fixing the speed reducer 5, and each bolt hole is distributed on the circumference coaxial with the hanging plate through hole. The speed reducer hanging plate 8 adopts a straight thin plate and the lower end can rotate around the short shaft, keeping good elasticity, and at the same time can compensate the positioning error between the side plate 1a, the speed reducer shell and the driving shaft 4.

[0035] As shown in the drawings, Figure 6 The rack 1 and the conveying chain 7 of the chain conveyor of the utility model extend along an S-shaped curve, that is, an S-bend conveyor. The structure of the driving shaft end of the driving shaft 4 of the S-bend conveyor is the same as that of the straight-line conveyor, which will not be repeated here.

[0036] The above merely describes preferred and feasible embodiments of the present application, shows and describes the basic principles, main features and advantages of the present application, and is not intended to limit the patent protection scope of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. In addition to the above embodiments, the present application can also have other implementation manners without departing from the spirit and scope of the present application. The present application can also have various changes and improvements, and any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope of the present application. The protection scope of the present application is defined by the appended claims and their equivalents. The technical features not described in the present application can be realized by or using the prior art, and will not be described here.

Claims

1. A chain conveyor, comprising a frame, a driving shaft is installed at one end of the frame, a driven shaft is installed at the other end of the frame, both ends of the driving shaft and the driven shaft are respectively supported on the frame through bearings, a driving sprocket is installed on the driving shaft, a driven sprocket is installed on the driven shaft, a conveying chain belt is wound around between the driving sprocket and the driven sprocket, characterized in that: The driving shaft end of the main shaft is provided with a flat key and is inserted into the output hole of the speed reducer, the driving shaft end is provided with a reduced diameter section, the reduced diameter section is provided with a tapered expansion sleeve, the outer end of the tapered expansion sleeve is uniformly provided with a plurality of longitudinal slits, and the inner cavity of the tapered expansion sleeve is provided with a tapered expansion plug with a narrow inner cavity and a wide outer cavity. ​ 2. The chain conveyor according to claim 1, characterized in that: The inner end surface of the expansion sleeve is uniformly provided with radial tenons, and each radial tenon is embedded into the embedding groove of the driving shaft end.

3. The chain conveyor of claim 1, wherein: The rack and the conveying chain belt extend in a straight line or extend along an S-shaped curve.

4. The chain conveyor of claim 1, wherein: The speed reducer is fixed on the rack through a speed reducer hanging plate, the speed reducer hanging plate is a Z-shaped bent thin plate, the lower part of the speed reducer hanging plate is fixed on the rack through screws, the middle part of the speed reducer hanging plate is bent outward, the upper part of the speed reducer hanging plate is bent upward and has a width greater than the lower part, the upper part of the speed reducer hanging plate is provided with a hanging plate through hole, and the driving shaft end of the main shaft passes out of the hanging plate through hole; the upper part of the speed reducer hanging plate is provided with bolt holes for fixing the speed reducer, and each bolt hole is distributed on the circumference coaxial with the hanging plate through hole.

5. The chain conveyor of claim 1, wherein: The speed reducer is fixed on the rack through a speed reducer hanging plate, the lower part of the speed reducer hanging plate is fixed on the rack through screws, the middle part of the speed reducer hanging plate is bent outward, the upper part of the speed reducer hanging plate is bent upward and has a width greater than the lower part, the upper part of the speed reducer hanging plate is provided with a hanging plate through hole, and the driving shaft end of the main shaft passes out of the hanging plate through hole; the upper part of the speed reducer hanging plate is provided with bolt holes for fixing the speed reducer, and each bolt hole is distributed on the circumference coaxial with the hanging plate through hole.

6. The chain conveyor according to any one of claims 1 to 5, characterized in that: The rack is provided with side plates parallel to each other on both sides, the outer walls of the side plates are respectively fixed with supporting legs supported on the ground, and the supporting legs on both sides are connected to each other through a cross bar to form a whole.

7. A chain conveyor, comprising a frame, a driving shaft is installed at one end of the frame, a driven shaft is installed at the other end of the frame, both ends of the driving shaft and the driven shaft are supported on the frame through bearings respectively, a driving sprocket is installed on the driving shaft, a driven sprocket is installed on the driven shaft, a conveying chain belt is wound around between the driving sprocket and the driven sprocket, characterized in that: The driving shaft end of the main shaft is provided with a flat key and is inserted into the output hole of the speed reducer, the driving shaft end is provided with a reduced diameter section, the reduced diameter section is provided with a tapered expansion plug with a narrow inner cavity and a wide outer cavity, and a screw is screwed into the center screw hole of the driving shaft end through the center hole of the tapered expansion plug to expand the tapered expansion plug in the output hole of the speed reducer.

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