A retractable electric roller conveyor

Abstract

The present invention discloses a retractable electric roller conveyor comprising two foldable frames, each of which is formed by connecting a plurality of mutually parallel first support rods and a plurality of mutually parallel second support rods. The first support rods and the second support rods are hingedly connected at their midpoints to form an X-shape by middle bolts. The upper end of each first support rod is hingedly connected to the upper end of an adjacent second support rod by an upper bolt. A first roller is connected between the upper bolts corresponding to the two foldable frames, and a second roller is connected between the middle bolts corresponding to the two foldable frames. Adjacent first and second rollers are driven by a drive belt. A motor is mounted between two support legs on the same side and is pivotally connected to an intermediate roller. The motor drives the adjacent intermediate roller to rotate, and the intermediate roller drives the adjacent second roller to rotate via the drive belt. The first support rods are capable of covering at least the upper portion of the drive belt. The present invention effectively prevents the drive belt from wrapping around materials, ensuring continuous material conveyance.

Description

Technical Field

[0001] The invention relates to the technical field of logistics conveyor manufacturing, in particular to a telescopic electric roller conveyor. Background Art

[0002] Roller conveyors are widely used in logistics, warehousing and other industries due to their large conveying capacity, high speed and convenient operation. The retractable structure design further enhances the convenience of roller conveyors, making it easier to adjust the position and store them.

[0003] To increase conveying speed and reduce operator workload, most existing roller conveyors use electric roller conveyors. Electric roller conveyors require a drive belt to drive the rollers. However, the drive belt can become entangled when conveying soft rope packaging bags or other long, soft materials, affecting the normal operation of the conveyor. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a retractable electric roller conveyor, which can effectively prevent the material to be conveyed from being entangled with the conveyor drive parts, ensure continuous material transportation, improve the operating efficiency and reliability of the conveyor, and has a relatively compact structure.

[0005] The lifting mechanism is a set of one or more first lateral extensions of the lifting mechanism, and the second lateral extensions are connected along the length of the lifting mechanism, and the lifting mechanism is connected along the length of the lifting mechanism, and the lifting mechanism is connected along the length of the lifting mechanism.

[0006] A bracket is installed between two of the support legs on the same side, and a motor is installed on the bracket, and a driving wheel is fixedly connected to the driving shaft of the motor; at least one transition roller is hingedly connected to the upper parts of the two support legs connected to the bracket, and the structure of the transition roller is the same as that of the first roller, and the driving wheel drives the adjacent transition roller to rotate through a driving belt; when a transition roller is hingedly connected to the upper parts of the two support legs connected to the bracket, the adjacent transition roller drives the adjacent second roller to rotate through the driving belt; when multiple transition rollers are hingedly connected to the upper parts of the two support legs connected to the bracket, the adjacent transition roller drives the adjacent transition roller to rotate through the driving belt until the transition roller closest to the foldable frame drives the adjacent second roller to rotate through the driving belt;

[0007] The first support rod on the inner side has a rib extending toward the first roller at least at its upper edge. The first support rod can at least cover the upper portion close to the driving belt.

[0008] The first support rod comprises an elongated plate-like body with a semicircular upper end. The upper end and middle and lower edges of the plate-like body each have the rib extending toward the first roller. Through holes are provided in the upper, middle, and lower portions of the plate-like body. The through holes in the upper, middle, and lower portions respectively allow for the passage of upper, middle, and lower bolts, facilitating installation.

[0009] As a further improvement, the rib is perpendicular to the plate-like body, and the length of the rib is greater than the width of the drive belt, so as to ensure that the drive belt can be covered.

[0010] Preferably, the first roller includes a first cylindrical body and a first central support shaft, the first cylindrical body is sleeved outside the first central support shaft, both ends of the outer circumference of the first central support shaft are connected to both ends of the inner circumference of the first cylindrical body through a first bearing assembly, the first bearing assembly includes a first inner sleeve sleeved on the outer circumference of the first central support shaft, and a first outer sleeve matched with the first cylindrical body, the first inner sleeve and the first outer sleeve are connected through a bearing; the first transmission part is provided on the outer circumference of the first outer sleeve, and the first transmission part is matched with the driving belt;

[0011] First mounting threaded holes are provided on both end faces of the first central support shaft, and each first mounting threaded hole is screwed to one of the upper bolts; the first transmission part is a synchronous belt tooth or sprocket tooth or multi-wedge wheel tooth arranged on the outer peripheral surface of the first outer sleeve.

[0012] Preferably, the second roller includes a second cylindrical body and a second central support shaft, the second cylindrical body is sleeved outside the second central support shaft, both ends of the outer circumference of the second central support shaft are connected to both ends of the inner circumference of the second cylindrical body through a second bearing assembly, the second bearing assembly includes a second inner sleeve sleeved on the outer circumference of the second central support shaft, and a second outer sleeve matched with the second cylindrical body, the second inner sleeve and the second outer sleeve are connected through a bearing; the outer circumference of the second outer sleeve is provided with a second transmission part, and the second transmission part is matched with the driving belt;

[0013] Second mounting threaded holes are provided on both end faces of the second central support shaft, and each second mounting threaded hole is screwed to one of the middle bolts; the second transmission part is a synchronous belt tooth or sprocket tooth or multi-wedge wheel tooth arranged on the outer peripheral surface of the second outer sleeve.

[0014] A further improvement is that when the driving wheel drives the adjacent intermediate roller to rotate via the driving belt, the driving belt is covered by a cover rod, thereby further preventing the driving belt connected to the driving wheel from being entangled with soft objects.

[0015] Furthermore, when multiple intermediate rollers are hingedly connected to the upper parts of the two support legs connected to the bracket, when the adjacent intermediate roller drives the adjacent intermediate roller to rotate via the drive belt, the drive belt is covered by a cover rod to prevent the drive belt connected to the two intermediate rollers from being entangled with soft objects.

[0016] A further improvement is provided in which a lower support rod is fixedly connected between the two corresponding lower bolts on the two foldable frames to further enhance rigidity during transport. The upper end of a first support rod closest to one support leg is hingedly connected to the support leg via an upper hinge bolt, which is also connected to an intermediate roller. The lower end of a first support rod closest to the other support leg is hingedly connected to the support leg via a lower hinge bolt. The upper end of a second support rod closest to one support leg is hingedly connected to the support leg via an upper hinge bolt, which is also connected to an intermediate roller. The lower end of a second support rod closest to the other support leg is hingedly connected to the support leg via a lower hinge bolt. This facilitates installation and makes the structure more compact.

[0017] As a further improvement, a reversible material blocking frame is installed between the two supporting legs on the same side of the two foldable frames, which can better prevent materials from falling.

[0018] In a further improvement, each upper bolt is hingedly connected to the upper end of a telescopic rod. A first elongated through-hole is provided at the lower portion of the telescopic rod, through which the lower bolt passes. When the two foldable frames are fully extended, the lower bolt abuts against the upper side of the first elongated through-hole. The telescopic rods significantly enhance the support rigidity of the conveyor during use, allowing it to withstand greater impact loads and transport heavier materials.

[0019] The present invention uses a motor to drive the rotation of adjacent intermediate rollers; these intermediate rollers drive the rotation of adjacent second rollers via a drive belt. The adjacent first and second rollers are then driven by the drive belt, allowing all first rollers to rotate in the same direction to convey materials. Because the upper portion of the drive belt can be covered by the first support rod, the drive belt is effectively prevented from becoming entangled with long, flexible objects such as ropes. This effectively prevents the conveyed material from becoming entangled with the conveyor's drive components, ensuring continuous material transport and improving conveyor operating efficiency and reliability.

[0020] On the other hand, the first support rod of the present invention serves as a movable supporting component and can also cover the driving belt to prevent the driving belt from being entangled with soft objects, thereby enhancing the function and making the overall structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a perspective view of a first embodiment of the present invention;

[0022] Figure 2 This is a front view of the first embodiment of the present invention;

[0023] Figure 3 yes Figure 2 A top view of

[0024] Figure 4 yes Figure 2 Right view;

[0025] Figure 5 This is a three-dimensional diagram from another angle of the first embodiment of the present invention;

[0026] Figure 6 It is a bottom perspective view of a first embodiment of the present invention;

[0027] Figure 7 yes Figure 6 A magnified view of point A;

[0028] Figure 8 is a perspective view of a first support rod according to a first embodiment of the present invention;

[0029] Figure 9 This is a three-dimensional diagram of a telescopic rod according to a first embodiment of the present invention;

[0030] Figure 10 This is a front view of the first roller of the first embodiment of the present invention;

[0031] Figure 11 yes Figure 10 BB cross-sectional view;

[0032] Figure 12 This is a front view of the second roller of the first embodiment of the present invention;

[0033] Figure 13 This is a three-dimensional diagram of a cover rod according to a first embodiment of the present invention;

[0034] Figure 14 It is a perspective view of a second embodiment of the present invention;

[0035] Figure 15 It is a three-dimensional diagram of a third embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1 Figures 1 to 13 As shown, a retractable electric roller conveyor comprises two mutually parallel foldable frames 10, each of which is connected to two supporting legs 20 at both ends of each foldable frame 10, each foldable frame 10 is connected by a plurality of mutually parallel first support rods 1 and a plurality of mutually parallel second support rods 2, the middle parts of the first support rods 1 and the second support rods 2 are hinged into an X shape by a middle bolt 3, the upper end of each first support rod 1 is hinged to the upper end of an adjacent second support rod 2 by an upper bolt 4, and the lower end of each second support rod 2 is hinged to the lower end of an adjacent first support rod 1 by a lower bolt 5, a first roller 6 is connected between the upper bolts 4 corresponding to the two foldable frames 10, and a second roller 7 is connected between the middle bolts 3 corresponding to the two foldable frames 10, each first roller 6 is provided with a first transmission part 61 at both ends, and each second roller 7 is provided with a second transmission part 71 at both ends, the first transmission part 61 of the first roller 6 is connected to the second transmission part 71 on the same side and adjacent second roller 7 by a driving belt 8, so that the adjacent first rollers 6 and second rollers 7 form a transmission. The first support rod 1 on the inner side has a rib 12 extending at least at its upper edge toward the first roller 6 , so that the first support rod 1 can cover the upper portion of the driving belt 8 close thereto.

[0038] A bracket 201 is mounted between two support legs 20 on the same side. A motor 9 is mounted on the bracket 201, and a drive wheel 91 is fixedly connected to the drive shaft of the motor 9. An intermediate roller 60 is hingedly connected to the upper portion of the two support legs 20 connected to the bracket 201. The intermediate roller 60 has the same structure and dimensions as the first roller 6. The drive wheel 91 rotates the adjacent intermediate roller 60 via a drive belt 8. The intermediate roller 60 also rotates the adjacent second roller 7 via the drive belt 8. When the drive wheel 91 rotates the adjacent intermediate roller 60 via the drive belt 8, the drive belt 8 is covered by a cover rod 90. One end of the cover rod 90 is connected to the bracket 201, and the other end is connected to the upper portion of one support leg 20. This further prevents the drive belt 8 from getting entangled in soft objects.

[0039] A transition roller 60 is also installed between the upper parts of the other two support legs 20 on the same side.

[0040] Figure 13 As further shown, the cover rod 90 includes a plate-like body 901, and a flange 902 extends outward from the edge of the plate-like body 901. The length of the flange 902 is greater than the width of the drive belt 8. Two through holes 903 are provided on the plate-like body 901 for bolts to pass through.

[0041] Figure 8 As further shown, the first support rod 1 includes a long plate-like body 11, the upper end of the plate-like body 11 is semicircular, and the upper end and the middle and lower edges of the plate-like body 11 are extended toward the side of the first roller 6 with a rib 12, the rib 12 is perpendicular to the plate-like body 11, and the length of the rib 12 is greater than the width of the driving belt 8, so that the first support rod 1 can cover the upper and lower parts of the driving belt 8 through the rib 12; the upper, middle and lower parts of the plate-like body 11 are all provided with through holes 13.

[0042] Figure 10 、 Figure 11As further shown, the first roller 6 includes a first cylindrical body 6a and a first central support shaft 6b, the first cylindrical body 6a is sleeved on the outside of the first central support shaft 6b, and both ends of the outer circumference of the first central support shaft 6b are connected to the two ends of the inner circumference of the first cylindrical body 6a through a first bearing assembly 6c, the first bearing assembly 6c includes two first inner sleeves 61c sleeved on the outer circumference of the first central support shaft 6b, and a first outer sleeve 62c matched with the first cylindrical body 6a, and the first inner sleeve 61c and the first outer sleeve 62c are connected through a bearing 63c; the outer circumference of the first outer sleeve 62c is provided with the first transmission part 61, and the first transmission part 61 is matched with the drive belt 8; the first transmission part 61 is a synchronous belt tooth arranged on the outer circumference of the first outer sleeve 62c, and can also be a sprocket tooth or multi-wedge gear tooth arranged on the outer circumference of the first outer sleeve 62c; the two end surfaces of the first central support shaft 6b are provided with first mounting threaded holes 61b, and each first mounting threaded hole 61b is screwed with one of the upper bolts 4.

[0043] In this embodiment, the structure of the second roller 7 is the same as that of the first roller 6 . Figure 12 As further shown, the second roller 7 includes a second cylindrical body 7a and a second center support shaft 7b, the second cylindrical body 7a is sleeved on the outside of the second center support shaft 7b, and the two ends of the outer circumference of the second center support shaft 7b are connected to the two ends of the inner circumference of the second cylindrical body 7a through a second bearing assembly 7c, and the second bearing assembly 7c includes a second inner sleeve sleeved on the outer circumference of the second center support shaft 7b, and a second outer sleeve matched with the second cylindrical body 7a, and the second inner sleeve and the second outer sleeve are connected through a bearing; a second transmission part 71 is provided on the outer circumference of the second outer sleeve, and the second transmission part 71 is matched with the drive belt 8; the second transmission part 71 is a synchronous belt tooth arranged on the outer circumference of the second outer sleeve, and the second transmission part 71 can also be a sprocket tooth or a multi-wedge wheel tooth arranged on the outer circumference of the second outer sleeve; second mounting threaded holes are provided on both end faces of the second center support shaft 7b, and each second mounting threaded hole is screwed into one of the center bolts 3.

[0044] A lower support rod 51 is fixedly connected between the two corresponding lower bolts 5 on the two foldable frames 10 .

[0045] Figure 2 As further shown, the upper end of a first support rod 1 closest to the support leg 20 on one side is hinged to the support leg 20 via an upper hinge bolt 203, and the upper hinge bolt 203 is also connected to a transition roller 60; the lower end of a first support rod 1 closest to the support leg 20 on the other side is hinged to the support leg 20 via a lower hinge bolt 204;

[0046] The upper end of a second support rod 2 closest to the support leg 20 on one side is hinged to the support leg 20 through an upper hinge bolt 203, and the upper hinge bolt 203 is also connected to a transition roller 60; the lower end of a second support rod 2 closest to the support leg 20 on the other side is hinged to the support leg 20 through a lower hinge bolt 204.

[0047] A reversible object blocking frame 202 is installed between the two supporting legs 20 on the same side of the two foldable frames 10.

[0048] Each upper bolt 4 is also hinged to the upper end of a telescopic rod 14. The telescopic rod 14 includes an elongated plate-like body 140. The upper and lower ends of the elongated plate-like body 140 are semicircular. The lower portion of the telescopic rod 14 is provided with a first elongated through hole 141, and the upper portion of the telescopic rod is provided with a circular through hole 142; the lower bolt 5 passes through the first elongated through hole 141 at the lower portion of the telescopic rod 14. After the two foldable frames 10 are extended into place, the lower bolt 5 supports the upper side of the first elongated through hole 141.

[0049] In this embodiment, the drive wheel 91 on the drive shaft of the motor 9 first rotates the adjacent intermediate roller 60. This intermediate roller 60 then drives the adjacent second roller 7 via the drive belt 8. The adjacent first and second rollers 6 and 7 are also driven by the drive belt 8, so that all first rollers 6 can rotate in the same direction to convey material. The upper and lower portions of the drive belt 8 are covered by the first support rod 1. This effectively prevents the drive belt 8 from becoming entangled in long, flexible objects such as ropes, ensuring continuous material transportation and improving the efficiency and reliability of the conveyor.

[0050] Example 2 Figure 14 As shown, a telescopic electric roller conveyor is provided, which is different from the first embodiment in that there is no hinged telescopic rod between the upper bolt 4 and the lower bolt 5.

[0051] Example 3: Figure 15 As shown, a retractable electric roller conveyor is different from the embodiment 1 in that two transition rollers 60 are hinged on the upper part of the two supporting legs 20 connected to the bracket 201, and the adjacent transition rollers 60 drive the adjacent transition rollers 60 to rotate through the driving belt 8. The adjacent transition rollers 60 are closest to the foldable frame 10, and the adjacent transition rollers 60 closest to the foldable frame 10 drive the adjacent second roller to rotate through the driving belt 8.

[0052] When the adjacent transition roller 60 drives the adjacent transition roller 60 to rotate through the drive belt 8, the drive belt 8 is covered by a cover rod 90. The cover rod 90 of this embodiment has the same structure as the cover rod 90 described in Example 1, but different sizes. This cover rod 90 is connected to the upper part of the support leg 20.

[0053] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined by the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A retractable electric roller conveyor, comprising two mutually parallel foldable frames, each foldable frame having two support legs connected at both ends, each foldable frame being formed by connecting a plurality of mutually parallel first support rods and a plurality of mutually parallel second support rods, wherein the first support rods and the second support rods are hingedly connected at their midpoints to form an X shape by middle bolts, the upper end of each first support rod being hingedly connected to the upper end of an adjacent second support rod by an upper bolt, the lower end of each second support rod being hingedly connected to the lower end of an adjacent first support rod by a lower bolt, and a first roller being connected between the corresponding upper bolts of the two foldable frames, characterized in that: A second roller is connected between the middle bolts corresponding to the two foldable frames. Both ends of each first roller are provided with a first transmission part, and both ends of each second roller are provided with a second transmission part. The first transmission part of the first roller is connected to the second transmission part on the same side and adjacent to the second roller through a driving belt, so that the adjacent first rollers and the second rollers form a transmission; A bracket is installed between two of the support legs on the same side, and a motor is installed on the bracket, and a driving wheel is fixedly connected to the driving shaft of the motor; at least one transition roller is hingedly connected to the upper parts of the two support legs connected to the bracket, and the structure of the transition roller is the same as that of the first roller, and the driving wheel drives the adjacent transition roller to rotate through a driving belt; when a transition roller is hingedly connected to the upper parts of the two support legs connected to the bracket, the adjacent transition roller drives the adjacent second roller to rotate through the driving belt; when multiple transition rollers are hingedly connected to the upper parts of the two support legs connected to the bracket, the adjacent transition roller drives the adjacent transition roller to rotate through the driving belt until the transition roller closest to the foldable frame drives the adjacent second roller to rotate through the driving belt; The first support rod on the inner side has a rib extending toward the first roller at least at its upper edge, and the first support rod can at least cover the upper portion of the drive belt close thereto; The first support rod includes a long plate-shaped body, the upper end of the plate-shaped body is semicircular, the upper end and the middle and lower edges of the plate-shaped body are all extended toward the first roller with the said rib, and the upper, middle and lower parts of the plate-shaped body are all provided with through holes; A lower support rod is fixedly connected between two corresponding lower bolts on the two foldable frames.

2. The retractable electric roller conveyor according to claim 1, characterized in that: The rib is perpendicular to the plate-shaped body, and the length of the rib is greater than the width of the driving belt.

3. The retractable electric roller conveyor according to claim 1, characterized in that: The first roller includes a first cylindrical body and a first central support shaft, the first cylindrical body is sleeved outside the first central support shaft, both ends of the outer circumference of the first central support shaft are connected to both ends of the inner circumference of the first cylindrical body through a first bearing assembly, the first bearing assembly includes a first inner sleeve sleeved on the outer circumference of the first central support shaft, and a first outer sleeve matched with the first cylindrical body, the first inner sleeve and the first outer sleeve are connected through a bearing; the first transmission part is provided on the outer circumference of the first outer sleeve, and the first transmission part is matched with the driving belt; First mounting threaded holes are provided on both end faces of the first central support shaft, and each first mounting threaded hole is screwed to one of the upper bolts; the first transmission part is a synchronous belt tooth or sprocket tooth or multi-wedge wheel tooth arranged on the outer peripheral surface of the first outer sleeve.

4. The retractable electric roller conveyor according to claim 1, characterized in that: The second roller includes a second cylindrical body and a second central support shaft, the second cylindrical body is sleeved outside the second central support shaft, both ends of the outer circumference of the second central support shaft are connected to both ends of the inner circumference of the second cylindrical body through a second bearing assembly, the second bearing assembly includes a second inner sleeve sleeved on the outer circumference of the second central support shaft, and a second outer sleeve matched with the second cylindrical body, the second inner sleeve and the second outer sleeve are connected through a bearing; the outer circumference of the second outer sleeve is provided with a second transmission part, and the second transmission part is matched with the driving belt; Second mounting threaded holes are provided on both end faces of the second central support shaft, and each second mounting threaded hole is screwed to one of the middle bolts; the second transmission part is a synchronous belt tooth or sprocket tooth or multi-wedge wheel tooth arranged on the outer peripheral surface of the second outer sleeve.

5. The retractable electric roller conveyor according to claim 1, characterized in that: When the driving wheel drives the adjacent intermediate roller to rotate through the driving belt, the driving belt is covered by a covering rod.

6. The retractable electric roller conveyor according to claim 1, characterized in that: When a plurality of transition rollers are hingedly connected to the upper parts of the two supporting legs connected to the bracket, when the adjacent transition roller drives the adjacent transition roller to rotate through the driving belt, the driving belt is covered by a covering rod.

7. The retractable electric roller conveyor according to claim 1, characterized in that: The upper end of a first support rod closest to the support leg on one side is hinged to the support leg via an upper hinge bolt, and the upper hinge bolt is simultaneously connected to a transition roller; the lower end of a first support rod closest to the support leg on the other side is hinged to the support leg via a lower hinge bolt; The upper end of a second support rod closest to the support leg on one side is hinged to the support leg through an upper hinge bolt, and the upper hinge bolt is also connected to a transition roller; the lower end of a second support rod closest to the support leg on the other side is hinged to the support leg through a lower hinge bolt.

8. The retractable electric roller conveyor according to claim 1, characterized in that: A flippable object blocking frame is arranged between the two supporting legs on the same side of the two foldable frames.

9. A retractable electric roller conveyor according to any one of claims 1 to 8, characterized in that: Each upper bolt is also hinged to the upper end of a telescopic rod, and a first long strip through hole is provided at the lower part of the telescopic rod. The lower bolt passes through the first long strip through hole at the lower part of the telescopic rod. After the two foldable frames are extended into place, the lower bolt supports the upper side of the first long strip through hole.

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