Electric roller with non-return function

Abstract

The utility model discloses an electric roller with a non-return function. The electric roller comprises a roller body and a non-return unit. The left end of the roller is rotationally connected with a supporting shaft, and a driving unit is arranged on the right side of the roller; the non-return unit comprises a ratchet wheel, pawl assemblies, a positioning ring and a torsional spring, the ratchet wheel movably sleeves the middle of the outer cambered surface of the supporting shaft, the pawl assemblies are uniformly arranged in the roller and matched with the ratchet wheel, the positioning ring is arranged at the right end of the outer cambered surface of the supporting shaft, and the torsional spring movably sleeves the middle of the outer cambered surface of the supporting shaft; according to the electric roller with the non-return function, reverse rotation of the roller can be limited through the pawl and the ratchet wheel, the use safety is good, energy can be stored, auxiliary power can be provided for starting of the roller, the load generated when a motor is started can be reduced, and the practicability is high. And the service life of the electric roller is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric rollers, in particular to an electric roller with a reverse-stop function. Background Art

[0002] An electric roller is a new type of driving device that combines a motor and a reducer inside the roller body, directly driving the roller to rotate, thereby driving the movement of the conveyor belt. This design not only improves the transmission efficiency but also reduces the complexity and maintenance requirements of external transmission devices, making the entire system more reliable and easier to maintain. It is mainly applied to fixed and mobile belt conveyors. Existing electric rollers generally lack a reverse-stop function. When the belt conveyor is inclined, the belt conveyor may reverse or slip when it stops with a load, which may lead to accidents. Therefore, a ratchet and pawl structure is also used to achieve one-way locking. The structure is simple and has a good reverse-stop effect, but generally, it only has a reverse-stop function and cannot provide assistance for the next start. As a result, the power unit needs to start under high load, and long-term high-load starting of the power unit will shorten its own service life. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an electric roller with a reverse-stop function, which can limit the reverse rotation of the roller through a pawl and a ratchet, has good use safety, can also store energy, provide auxiliary power for the start of the roller, can reduce the load when the motor starts, and prolongs the service life of the electric roller, and can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an electric roller with a reverse-stop function, including a roller and a reverse-stop unit;

[0005] Roller: Its left end is rotatably connected to a support shaft, and a driving unit is provided on the right side of the roller;

[0006] Reverse-stop unit: It includes a ratchet, a pawl assembly, a positioning ring, and a torsion spring. The ratchet is movably sleeved on the middle of the outer arc surface of the support shaft. The pawl assemblies are evenly arranged inside the roller. The pawl assemblies are all arranged in cooperation with the ratchet. A positioning ring is provided at the right end of the outer arc surface of the support shaft. A torsion spring is movably sleeved on the middle of the outer arc surface of the support shaft. The left end of the torsion spring extends into the inside of the ratchet, and the right end of the torsion spring extends into the inside of the positioning ring. It can limit the reverse rotation of the roller through a pawl and a ratchet, has good use safety, can also store energy, provide auxiliary power for the start of the roller, can reduce the load when the motor starts, and prolongs the service life of the electric roller.

[0007] Furthermore, the reverse-stop unit further includes a positioning groove and a positioning strip. The positioning groove is opened on the inner arc wall of the ratchet, and the positioning strip is provided on the middle of the outer arc surface of the support shaft. The positioning strip is located inside the positioning groove to limit the rotation range of the ratchet.

[0008] Further, the pawl assembly includes a pin shaft and pawls. The pin shafts are evenly arranged at the left end inside the drum. The middle parts of the outer arc surfaces of the pin shafts are rotatably connected with the pawls, and the pawls are all arranged in cooperation with the ratchet wheel, enabling one-way locking.

[0009] Further, the pawl assembly further includes spring pieces. The spring pieces are evenly arranged at the left end of the inner arc wall of the drum. The spring pieces are arranged in cooperation with the pawls to facilitate the positioning of the pawls.

[0010] Further, a support ring is provided at the left end inside the drum, and the right ends of the pin shafts are fixedly connected to the support ring to enhance the structural strength of the pin shafts.

[0011] Further, a support tube is rotatably connected to the right end of the drum. Support seats are provided at the ends of the support tube and the support shaft away from the drum, facilitating the installation of the electric drum.

[0012] Further, the drive unit includes a transmission shaft, a first gear, a support plate, a round shaft, a second gear, a toothed ring, and a motor. The transmission shaft is rotatably connected inside the support tube. A first gear is provided at the left end of the transmission shaft. A support plate is provided at the left end of the support tube. Round shafts are provided inside the circular holes on the left side surface of the support plate. Second gears are rotatably connected to the left ends of the outer arc surfaces of the round shafts. The toothed ring is arranged at the right end of the inner arc wall of the drum. The second gears are all meshed with the first gear, and the second gears are all meshed with the toothed ring. The motor is provided at the right end of the right support seat. The output shaft of the motor is fixedly connected to the right end of the transmission shaft. The input end of the motor is electrically connected to the output end of an external controller, providing power for the rotation of the drum.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The electric drum with a reverse stop function has the following advantages:

[0014] When the motor stops working and the external conveyor belt drives the drum to rotate counterclockwise, the pawls are movably clamped with the ratchet wheel. The drum drives the ratchet wheel to rotate around the support shaft through the pin shafts and pawls. The ratchet wheel drives the torsion spring to undergo elastic deformation. The front side wall of the positioning groove inside the ratchet wheel gradually contacts the front side surface of the positioning bar, and then the positioning bar restricts the rotation of the ratchet wheel, thereby restricting the counterclockwise rotation of the drum and locking it. At the same time, the torsion spring stores energy. When the motor starts, the torsion spring generates a clockwise rotational force on the ratchet wheel. The ratchet wheel generates a clockwise rotational force on the drum through the pawls and pin shafts, thereby reducing the resistance when the drum starts to rotate, reducing the load when the motor starts, being able to restrict the reverse rotation of the drum through the pawls and ratchet wheel, having good use safety, and being able to store energy, providing auxiliary power for the start of the drum, reducing the load when the motor starts, and extending the service life of the electric drum. Description of the Drawings

[0015] Figure 1 Structural schematic diagram of the present utility model;

[0016] Figure 2 Cross-sectional structural schematic diagram of the back-check unit of the present utility model.

[0017] In the figure: 1 drum, 2 support pipe, 3 support shaft, 4 support seat, 5 back-check unit, 51 ratchet wheel, 52 ratchet pawl assembly, 521 pin shaft, 522 ratchet pawl, 523 spring piece, 53 positioning ring, 54 torsion spring, 55 positioning groove, 56 positioning bar, 6 support ring, 7 drive unit, 71 transmission shaft, 72 first gear, 73 support plate, 74 round shaft, 75 second gear, 76 toothed ring, 77 motor. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1-2 , this embodiment provides a technical solution: an electric drum with a back-check function, including a drum 1 and a back-check unit 5;

[0020] Roller 1: A support shaft 3 is rotatably connected to its left end. Roller 1 drives the external conveyor belt to operate. A drive unit 7 is provided on the right side of roller 1. A support pipe 2 is rotatably connected to the right end of roller 1. Support seats 4 are provided at the ends of support pipe 2 and support shaft 3 away from roller 1. The support seats 4 facilitate the installation and fixation of the electric roller. The drive unit 7 includes a transmission shaft 71, a first gear 72, a support plate 73, a round shaft 74, a second gear 75, a tooth ring 76, and a motor 77. The transmission shaft 71 is rotatably connected inside the support pipe 2. A first gear 72 is provided at the left end of the transmission shaft 71. A support plate 73 is provided at the left end of the support pipe 2. The support pipe 2 provides rotational support for the right end of roller 1. Round shafts 74 are provided inside the circular holes on the left side surface of the support plate 73. The support plate 73 provides an installation position for the round shafts 74. The left ends of the outer arcs of the round shafts 74 are rotatably connected to second gears 75. The round shafts 74 provide rotational support for the second gears 75. The tooth ring 76 is provided at the right end of the inner arc wall of roller 1. The second gears 75 are all meshed with the first gear 72. The second gears 75 are all meshed with the tooth ring 76. The motor 77 is provided at the right end of the right support seat 4. The output shaft of the motor 77 is fixedly connected to the right end of the transmission shaft 71. The input end of the motor 77 is electrically connected to the output end of an external controller. The external controller controls the operation of the motor 77. The output of the motor 77 drives the transmission shaft 71 and the first gear 72 to rotate. The first gear 72 drives the tooth ring 76 to rotate through the second gears 75. The tooth ring 76 drives roller 1 to rotate clockwise under the support of the support shaft 3 and the support pipe 2;

[0021] Reverse prevention unit 5: It includes a ratchet wheel 51, a pawl assembly 52, a positioning ring 53 and a torsion spring 54. The ratchet wheel 51 is movably sleeved on the middle part of the outer arc surface of the support shaft 3. The pawl assemblies 52 are evenly arranged inside the drum 1. The pawl assemblies 52 are all arranged in cooperation with the ratchet wheel 51. A positioning ring 53 is provided at the right end of the outer arc surface of the support shaft 3. A torsion spring 54 is movably sleeved on the middle part of the outer arc surface of the support shaft 3. The left end of the torsion spring 54 extends into the inside of the ratchet wheel 51, and the right end of the torsion spring 54 extends into the inside of the positioning ring 53. The reverse prevention unit 5 further includes a positioning groove 55 and a positioning strip 56. The positioning groove 55 is opened on the inner arc wall of the ratchet wheel 51. The positioning strip 56 is provided on the middle part of the outer arc surface of the support shaft 3. The positioning strip 56 is located inside the positioning groove 55. The ratchet wheel 51 drives the torsion spring 54 to generate elastic deformation. The front side wall of the positioning groove 55 inside the ratchet wheel 51 gradually contacts the front side surface of the positioning strip 56, and then the positioning strip 56 restricts the rotation of the ratchet wheel 51, thereby restricting the counterclockwise rotation of the drum 1 and locking it. At the same time, the torsion spring 54 stores energy. The pawl assembly 52 includes a pin shaft 521 and a pawl 522. The pin shafts 521 are evenly arranged at the left end inside the drum 1. The middle parts of the outer arc surfaces of the pin shafts 521 are all rotatably connected to the pawls 522. The pawls 522 are all arranged in cooperation with the ratchet wheel 51. The pawl assembly 52 further includes a spring piece 523. The spring pieces 523 are evenly arranged at the left end of the inner arc wall of the drum 1. The spring pieces 523 are arranged in cooperation with the pawls 522. The drum 1 drives the pawls 522 to rotate clockwise around the ratchet wheel 51 through the pin shafts 521. The ends of the pawls 522 slide out of the ratchet teeth grooves of the ratchet wheel 51. The pawls 522 squeeze the spring pieces 523. When the external conveyor belt drives the drum 1 to rotate counterclockwise, the pawls 522 are movably clamped with the ratchet wheel 51. The drum 1 drives the ratchet wheel 51 to rotate counterclockwise around the support shaft 3 through the pin shafts 521 and the pawls 522. The torsion spring 54 will generate a clockwise rotating force on the ratchet wheel 51. The ratchet wheel 51 generates a clockwise rotating force on the drum 1 through the pawls 522 and the pin shafts 521, thereby reducing the resistance when the drum 1 starts to rotate, and further reducing the load when the motor 77 starts. A support ring 6 is provided at the left end inside the drum 1. The right ends of the pin shafts 521 are all fixedly connected to the support ring 6, providing support for the pin shafts 521.

[0022] The working principle of the electric roller with backstop function provided by the present utility model is as follows: During use, an external controller controls the operation of the motor 77. The output of the motor 77 drives the transmission shaft 71 and the first gear 72 to rotate. The first gear 72 drives the toothed ring 76 to rotate through the second gear 75. The toothed ring 76 drives the roller 1 to rotate clockwise under the support of the support shaft 3 and the support pipe 2. The roller 1 drives the external conveyor belt to operate. The roller 1 drives the pawl 522 to rotate clockwise around the ratchet 51 through the pin shaft 521. The end of the pawl 522 slides out of the ratchet tooth groove of the ratchet 51, and the pawl 522 presses the spring piece 523. When the motor 77 stops working, when the external conveyor belt drives the roller 1 to rotate counterclockwise, the pawl 522 is movably clamped with the ratchet 51. The roller 1 pushes the ratchet 51 to rotate counterclockwise around the support shaft 3 through the pin shaft 521 and the pawl 522. The ratchet 51 drives the torsion spring 54 to undergo elastic deformation. The front side wall of the internal positioning groove 55 of the ratchet 51 gradually contacts the front side of the positioning bar 56, and then the positioning bar 56 restricts the rotation of the ratchet 51, thereby restricting the counterclockwise rotation of the roller 1 and locking it. At the same time, the torsion spring 54 stores energy. When the motor 77 starts, the torsion spring 54 generates a clockwise rotational force on the ratchet 51. The ratchet 51 generates a clockwise rotational force on the roller 1 through the pawl 522 and the pin shaft 521, thereby reducing the resistance when the roller 1 starts to rotate, and further reducing the load when the motor 77 starts.

[0023] It should be noted that the motor 77 disclosed in the above embodiments can be freely configured according to the actual application scenario. The motor 77 can be selected as a three-phase asynchronous motor with the model YE3-132S1-2. The external controller controls the operation of the motor 77 using the commonly used methods in the prior art.

[0024] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. Electric roller with anti-backflow function, characterized in that: It includes a drum (1) and a backstop unit (5); Drum (1): A support shaft (3) is rotatably connected to its left end, and a drive unit (7) is provided on the right side of the drum (1); Backstop unit (5): It includes a ratchet wheel (51), a pawl assembly (52), a positioning ring (53) and a torsion spring (54). The ratchet wheel (51) is movably sleeved on the middle of the outer arc surface of the support shaft (3). The pawl assemblies (52) are evenly arranged inside the drum (1). The pawl assemblies (52) are all arranged in cooperation with the ratchet wheel (51). A positioning ring (53) is provided at the right end of the outer arc surface of the support shaft (3). A torsion spring (54) is movably sleeved on the middle of the outer arc surface of the support shaft (3). The left end of the torsion spring (54) extends into the interior of the ratchet wheel (51), and the right end of the torsion spring (54) extends into the interior of the positioning ring (53).

2. The electric drum with a check function according to claim 1, characterized in that: The backstop unit (5) further includes a positioning groove (55) and a positioning strip (56). The positioning groove (55) is opened on the inner arc wall of the ratchet wheel (51), and the positioning strip (56) is arranged on the middle of the outer arc surface of the support shaft (3). The positioning strip (56) is located inside the positioning groove (55).

3. The electric roller with a check function according to claim 1, characterized in that: The pawl assembly (52) includes a pin shaft (521) and a pawl (522). The pin shafts (521) are evenly arranged at the left end inside the drum (1). The middle of the outer arc surface of the pin shaft (521) is rotatably connected to the pawl (522). The pawls (522) are all arranged in cooperation with the ratchet wheel (51).

4. The electric drum with a check function according to claim 3, characterized in that: The pawl assembly (52) further includes a spring piece (523). The spring pieces (523) are evenly arranged at the left end of the inner arc wall of the drum (1). The spring pieces (523) are arranged in cooperation with the pawls (522).

5. The electric drum with a check function according to claim 3, characterized in that: A support ring (6) is provided at the left end inside the drum (1). The right ends of the pin shafts (521) are fixedly connected to the support ring (6).

6. The electric drum with a check function according to claim 1, characterized in that: A support pipe (2) is rotatably connected to the right end of the drum (1). Support seats (4) are provided at the ends of the support pipe (2) and the support shaft (3) away from the drum (1).

7. The electric drum with a check function according to claim 6, characterized in that: The drive unit (7) includes a transmission shaft (71), a first gear (72), a support plate (73), a round shaft (74), a second gear (75), a toothed ring (76) and a motor (77). The transmission shaft (71) is rotatably connected inside the support pipe (2). A first gear (72) is provided at the left end of the transmission shaft (71). A support plate (73) is provided at the left end of the support pipe (2). Round shafts (74) are provided inside the circular holes on the left side surface of the support plate (73). Second gears (75) are rotatably connected to the left ends of the outer arc surfaces of the round shafts (74). The toothed ring (76) is arranged at the right end of the inner arc wall of the drum (1). The second gears (75) are all meshed with the first gear (72), and the second gears (75) are all meshed with the toothed ring (76). The motor (77) is provided at the right end of the right support seat (4). The output shaft of the motor (77) is fixedly connected to the right end of the transmission shaft (71). The input end of the motor (77) is electrically connected to the output end of an external controller.

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