A new energy vehicle charging pile

Abstract

The present invention provides a new energy vehicle charging pile, which relates to the technical field of new energy vehicle charging piles, including: an underground charging pile base, wherein the upper surface of the underground charging pile base is movably connected with a rotating support rod, the bottom of the underground charging pile base is fixedly connected with a water collection pipe, the inside of the rotating support rod is slidably connected with a charging line hanging wheel, and the inside of the rotating support rod is provided with a charging connection line. The underground charging pile base in the present invention can be hidden under the ground when installed, so that the upper surface of the underground charging pile base is flush with the surface of the parking space, avoiding affecting the driving of the vehicle, and there is no need to occupy the space above the ground, thereby improving the space utilization rate, and solving the problem that the charging pile is large in size and high in height, occupies more space, and when the charging pile is installed in a parking area with compact space, the originally compact space will be made smaller, affecting the normal driving of the vehicle, and being not conducive to the reasonable use of the space.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging piles, and in particular to a new energy vehicle charging pile. Background Art

[0002] New energy vehicle charging piles are equipment that provide charging services for plug-in new energy vehicles. They are usually installed in public places such as public buildings, parking lots, shopping malls, operating vehicle charging stations, and private places such as residential communities. They provide charging services for the power batteries of new energy vehicles by connecting to the power grid. New energy charging piles can be used for personal, shared, and operational income. As the market share of new energy vehicles continues to increase, the market demand for charging piles is also gradually increasing, and the number of parking spaces equipped with charging piles is also gradually increasing.

[0003] When installing charging piles in parking spaces, due to their large size and high height, they take up more space. When installing charging piles in compact parking areas, the originally compact space will become even smaller, affecting the normal driving of vehicles and not conducive to the rational use of space. Summary of the invention

[0004] The disclosed embodiments relate to a new energy vehicle charging pile, so as to solve the problem that when installing a charging pile in a parking space in a parking lot, the charging pile is large in size and high in height, and occupies a large amount of space. When installing the charging pile in a parking area with compact space, the originally compact space will be made even smaller, affecting the normal driving of the vehicle and being not conducive to the rational use of space.

[0005] In a first aspect of the present disclosure, a new energy vehicle charging pile is provided, specifically including an underground charging pile base, wherein a rotating support rod is movably connected to the upper surface of the underground charging pile base, a water collection pipe is fixedly connected to the bottom of the underground charging pile base, a charging cable hanging wheel is slidably connected to the inside of the rotating support rod, a charging connection line is arranged inside the rotating support rod, a charging plug is installed at the end of the charging connection line, the charging connection line is electrically connected to the underground charging pile base, an active flip driving member is fixedly connected to the inside of the underground charging pile base by bolts, a rotating shaft of the active flip driving member is connected to a flip worm through a coupling, a sealing rotary belt is installed inside the rotating support rod, a driven rotary drum is rotatably connected to the inside of the rotating support rod through a bearing, and an active rotary drum is installed inside the rotating support rod, and the sealing rotary belt is movably connected to the driven rotary drum and the active rotary drum.

[0006] In at least some embodiments, the upper surface of the underground charging pile base is processed with a base storage cavity with a rectangular structure, the bottom surface of the base storage cavity is provided with a base drainage hole, the outer edge of the base storage cavity is provided with a sealing insert edge, and the upper surface of the underground charging pile base is hinged with a dust cover.

[0007] In at least some embodiments, a cover magnetic block is fixedly connected to the upper surface of the base storage cavity, the cover magnetic block is located below the dust cover, the dust cover and the cover magnetic block form a magnetic connection, and the dust cover fits the upper surface of the rotating support rod.

[0008] In at least some embodiments, a drain pipe is fixedly connected to the end of the water collecting pipe, and the upper opening of the water collecting pipe surrounds the lower part of the drain hole of the base.

[0009] In at least some embodiments, the outer surface of the rotating support rod is surrounded by a sealing flange, and the cross-section of the sealing flange is an "L"-shaped structure. The rotating support rod is movably connected to the inside of the base storage cavity. The right surface end of the rotating support rod is rotatably connected to the inner wall of the base storage cavity. The left surface end of the rotating support rod is fixedly connected to a hinged connecting tube, and the hinged connecting tube is rotatably connected to the left wall of the base storage cavity. The outer surface end of the hinged connecting tube is fixedly connected to a connecting tube worm gear, and the connecting tube worm gear is meshed with the flip worm to form a worm gear transmission.

[0010] In at least some embodiments, an isolation storage cavity is provided on the rear surface of the rotating support rod in the vertical state, a storage cavity guide opening is respectively provided at the upper end and the lower end of the isolation storage cavity, a floating guide opening is provided on the rear wall of the isolation storage cavity, a hanging wheel slider is fixedly connected to the rear surface of the charging cable hanging wheel, the hanging wheel slider is slidably connected to the floating guide opening, and a hanging wheel outer groove is provided on the outer surface of the charging cable hanging wheel.

[0011] In at least some embodiments, the sealing rotary belt includes a traction synchronous belt and an intermediate connecting belt. An intermediate connecting belt is fixedly connected between the two traction synchronous belts. A connecting belt opening is opened on the intermediate connecting belt. The sealing rotary belt is tightly and slidingly connected to the guide port of the storage cavity.

[0012] In at least some embodiments, driven synchronous pulleys are provided at both ends of the driven rotary drum, the driven synchronous pulleys are connected to the traction synchronous belt, and the shaft of the driven rotary drum is rotatably connected to the inside of the rotating support rod through a bearing.

[0013] In at least some embodiments, the active rotor is of a cylindrical structure, and active synchronous pulleys are provided at both ends of the active rotor. A rotor driving component is provided inside the active rotor, and the rotor driving component is fixedly connected to the inner wall of the rotating support rod by bolts. The rotating shaft of the rotor driving component is fixedly connected to the active rotor, and the active synchronous pulley is connected to the traction synchronous belt.

[0014] The present invention provides a new energy vehicle charging pile, which has the following beneficial effects:

[0015] The new energy vehicle charging pile in the present invention is a foldable structure, and its main body is composed of an underground charging pile base and a rotating support rod. The rotating support rod can be folded and stored in the base storage cavity on the upper surface of the underground charging pile base for hiding. The underground charging pile base in the present invention can be hidden under the ground during installation, so that the upper surface of the underground charging pile base is flush with the parking space surface, avoiding affecting the driving of the vehicle, and there is no need to occupy the space above the ground, thereby improving space utilization.

[0016] In addition, the power transmission line and the charging plug of the new energy vehicle charging pile in the present invention are hidden inside the isolation storage cavity. When charging, the rotating support rod is driven to unfold by the active flipping driving member, so that the rotating support rod is in a vertical state, and the isolation storage cavity opening faces backward. The charging connection line is pulled out from the charging line hanging wheel, and the charging connection line can be used to connect the car to charge the car. A moisture-proof structure is arranged on the edge of the rotating support rod. When the rotating support rod is in the hidden state, the sealing flange is plugged into the sealing plug edge, which can effectively prevent the accumulated water on the upper surface of the underground charging pile base or the rotating support rod from entering the base storage cavity through the gap. At the same time, a drainage structure is arranged, and a base drainage hole is arranged at the bottom of the base storage cavity, and the base drainage hole is connected to the water collection pipe, so as to quickly drain the accumulated water inside the base storage cavity to prevent the rotating support rod from being soaked and damp.

[0017] In addition, a controllable sealing structure is provided inside the rotating support rod of the new energy vehicle charging pile in the present invention. Under normal circumstances, when the rotating support rod is hidden in the base storage cavity, the joint opening of the sealing rotary belt is hidden inside the rotating support rod, and the opening of the isolation storage cavity is tightly covered by the intermediate joint. When charging is performed using the charging connection line, the rotary drum driving member is controlled to move, and the active rotary drum is driven to rotate by the rotary drum driving member, so that the sealing rotary belt rotates on the driven rotary drum and the active rotary drum, and the joint opening is adjusted to the front of the isolation storage cavity so that the joint opening is aligned with the isolation storage cavity, and the charging connection line inside the isolation storage cavity can be taken out. It is provided with multiple sealing structures, which can effectively improve the waterproof and dustproof performance of the equipment and reduce the probability of failure of the charging pile due to moisture and water ingress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture:

[0021] Figure 1 A schematic diagram showing the overall structure of the present application;

[0022] Figure 2A schematic diagram of the structure of the rotating support rod of the present application when it is unfolded is shown;

[0023] Figure 3 Shows this application Figure 2 A schematic diagram of the rear structure;

[0024] Figure 4 Shows this application Figure 3 The structural diagram at the bottom;

[0025] Figure 5 A schematic diagram of the structure of the rotating support rod of the present application is shown;

[0026] Figure 6 A schematic diagram showing the structure of the interior of the rotating support rod of the present application is shown;

[0027] Figure 7 It shows the structural diagram of the intermediate connection of this application;

[0028] Figure 8 The schematic diagram of the structure of the charging connection line of the present application is shown;

[0029] Fig. 9 The structural schematic diagram of the sealing spiral belt of the present application is shown;

[0030] Fig.10 The schematic diagram of the structure inside the active rotor of the present application is shown;

[0031] Fig.11 A schematic diagram of the structure of the isolation storage chamber of the present application is shown;

[0032] Fig.12 A schematic structural diagram of the bottom of the water collection pipe of the present application is shown.

[0033] Reference numerals list

[0034] 1. Underground charging pile base; 101. Base storage cavity; 102. Base drainage hole; 103. Sealing insert edge; 104. Dust cover; 105. Cover magnetic block; 2. Water collection pipe; 201. Drain pipe; 3. Rotating support rod; 301. Sealing flange; 302. Articulated connecting pipe; 303. Connecting pipe worm gear; 304. Isolation storage cavity; 305. Storage cavity guide port; 306. Floating guide port; 4. Charging line hanging wheel; 401. Hanging wheel slider; 402. Hanging wheel outer groove; 5. Charging connecting line; 6. Active flip drive; 601. Flip worm; 7. Sealing rotary belt; 701. Traction synchronous belt; 702. Intermediate joint; 703. Joint opening; 8. Driven rotary drum; 801. Driven synchronous pulley; 9. Active rotary drum; 901. Active synchronous pulley; 902. Rotary drum drive. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figures 1 to 12 :

[0037] The present invention proposes a new energy vehicle charging pile, comprising: an underground charging pile base 1, a rotating support rod 3 is movably connected to the upper surface of the underground charging pile base 1, a water collection pipe 2 is fixedly connected to the bottom of the underground charging pile base 1, a charging line hanging wheel 4 is slidably connected inside the rotating support rod 3, a charging connection line 5 is arranged inside the rotating support rod 3, a charging plug is installed at the end of the charging connection line 5, the charging connection line 5 is electrically connected to the underground charging pile base 1, and the underground charging pile base 1 is fixedly connected by bolts. There is an active flip driving member 6, the rotating shaft of the active flip driving member 6 is connected to the flip worm 601 through a coupling, a sealing belt 7 is installed inside the rotating support rod 3, a driven drum 8 is rotatably connected inside the rotating support rod 3 through a bearing, and an active drum 9 is installed inside the rotating support rod 3, and the sealing belt 7 is movably connected to the driven drum 8 and the active drum 9; the upper surface of the buried charging pile base 1 is processed with a base storage cavity 101 of a rectangular structure, and the bottom surface of the base storage cavity 101 is provided with a base drainage hole 10 2. A sealing insert 103 is provided on the outer edge of the base storage cavity 101. A dust cover 104 is hinged on the upper surface of the buried charging pile base 1. A cover magnetic block 105 is fixedly connected to the upper surface of the base storage cavity 101. The cover magnetic block 105 is located below the dust cover 104. The dust cover 104 and the cover magnetic block 105 form a magnetic connection. The dust cover 104 is in contact with the upper surface of the rotating support rod 3. The cover magnetic block 105 generates a magnetic attraction on the dust cover 104, so that the dust cover The plate 104 fits tightly with the upper surface of the underground charging pile base 1 and the rotating support rod 3. When the rotating support rod 3 is hidden, it can cover the gap at the end of the rotating support rod 3 to prevent impurities and dust on the ground from entering the gap and causing the rotating support rod 3 to get stuck, thereby playing a protective role. When the rotating support rod 3 is flipped, the dust cover plate 104 will be squeezed to make the dust cover plate 104 flip with it, and after the rotating support rod 3 is reset again, the dust cover plate 104 will seal the gap again under the magnetic action of the cover plate magnetic block 105.

[0038] In the disclosed embodiment, the end of the water collecting pipe 2 is fixedly connected to the drain pipe 201, and the upper opening of the water collecting pipe 2 surrounds the bottom of the base drain hole 102; the water collecting pipe 2 is connected to the base drain hole 102, and when the accumulated water enters the base storage cavity 101, it can be discharged to the water collecting pipe 2 through the base drain hole 102, and discharged into the drainage pipe through the drain pipe 201, so that the accumulated water can be quickly discharged, avoiding the accumulated water soaking the rotating support rod 3 and causing equipment failure.

[0039] In the embodiment of the present disclosure, the outer surface of the rotating support rod 3 is surrounded by a sealing flange 301, and the cross-section of the sealing flange 301 is an "L"-shaped structure. The rotating support rod 3 is movably connected to the inside of the base storage cavity 101, and the right surface end of the rotating support rod 3 is rotatably connected to the inner wall of the base storage cavity 101, and the left surface end of the rotating support rod 3 is fixedly connected to a hinged connecting tube 302, and the hinged connecting tube 302 is rotatably connected to the left wall of the base storage cavity 101, and the outer surface end of the hinged connecting tube 302 is fixedly connected to a connecting tube worm gear 303, and the connecting tube worm gear 303 is meshed with the flip worm 601 to form a worm gear transmission; by controlling the action of the active flip driving member 6, the active flip driving member 6 drives the flip worm 601 to rotate, and the rotating support rod 3 is driven to rotate through the worm gear transmission of the flip worm 601 and the connecting tube worm gear 303, so that the rotating support rod 3 is perpendicular to the upper surface of the buried charging pile base 1.

[0040] In the embodiment of the present disclosure, an isolation storage cavity 304 is provided on the rear surface of the rotating support rod 3 in the vertical state, and a storage cavity guide opening 305 is respectively formed through the upper end and the lower end of the isolation storage cavity 304, and a floating guide opening 306 is formed through the rear wall of the isolation storage cavity 304. A hanging wheel slider 401 is fixedly connected to the rear surface of the charging cable hanging wheel 4, and the hanging wheel slider 401 is slidably connected to the floating guide opening 306, and a hanging wheel outer groove 402 is provided on the outer surface of the charging cable hanging wheel 4; a charging plug is connected to the end of the charging connection line 5, and the charging plug is tightly inserted into the socket on the upper surface of the isolation storage cavity 304 under normal conditions. The winding path of the charging connection line 5 is increased by the charging cable hanging wheel 4, so that the charging connection line 5 remains straight when stored in the isolation storage cavity 304, and the hanging wheel slider 401 is slidably connected to the floating guide opening 306, so that the floating height of the charging cable hanging wheel 4 can be adjusted, and an appropriate tensioning effect is applied to the charging connection line 5 to prevent the charging connection line 5 from loosening.

[0041] Embodiment 2, on the basis of embodiment 1, the sealing rotary belt 7 includes a traction synchronous belt 701 and an intermediate connecting belt 702, an intermediate connecting belt 702 is fixedly connected between the two traction synchronous belts 701, a connecting belt opening 703 is opened on the intermediate connecting belt 702, and the sealing rotary belt 7 is tightly and slidably connected to the guide port 305 of the storage cavity; driven synchronous pulleys 801 are provided at both ends of the driven rotary drum 8, and the driven synchronous pulleys 801 are connected to the traction synchronous belt 701, and the shaft of the driven rotary drum 8 is rotatably connected to the inside of the rotating support rod 3 through a bearing; the active rotary drum 9 has a cylindrical structure, and active synchronous pulleys 901 are provided at both ends of the active rotary drum 9, and a rotary drum driving member 902 is provided inside the active rotary drum 9, and the rotary drum driving member 902 is fixedly connected to the inner wall of the rotating support rod 3 by bolts, and the rotating shaft of the rotary drum driving member 902 is fixedly connected to the active rotary drum 9, and the active rotary drum 9 is provided with a rotating drum driving member 902. The synchronous pulley 901 is connected to the traction synchronous belt 701; under normal conditions, when the rotating support rod 3 is hidden inside the base storage cavity 101, the associated opening 703 of the sealing rotary belt 7 is hidden inside the rotating support rod 3, and the opening of the isolation storage cavity 304 is tightly covered by the intermediate joint 702. When the charging connection line 5 is used for charging, the rotary drum driving member 902 is controlled to move, and the active rotary drum 9 is driven to rotate by the rotary drum driving member 902, so that the sealing rotary belt 7 rotates on the driven rotary drum 8 and the active rotary drum 9, and the associated opening 703 is adjusted to the front of the isolation storage cavity 304, so that the associated opening 703 is aligned with the isolation storage cavity 304, and the charging connection line 5 inside the isolation storage cavity 304 can be taken, thereby effectively adjusting the opening state of the isolation storage cavity 304, facilitating the normal use of the equipment and maintaining the sealing performance of the charging pile.

[0042] Working principle of this embodiment: The charging pile of this application is suitable for use in indoor environments such as underground parking lots and garages. During installation, the underground charging pile base 1 is buried in the installation position, and the upper surface of the underground charging pile base 1 is kept flush with the ground. The drainage pipe 201 is connected to the drainage pipe around the parking space. Under normal circumstances, the rotating support rod 3 is in a tilted state and hidden inside the base storage cavity 101. When the charging pile is needed to charge the car, the active flip driving member 6 is remotely controlled to drive the active flip driving member 6 to drive the flip worm 601 to rotate, and the worm gear transmission of the flip worm 601 and the connecting tube worm gear 303 drives the rotating support rod 3 to rotate, so that the rotating support rod 3 is perpendicular to the upper surface of the underground charging pile base 1, and then the rotary drum driving member 902 is remotely controlled to drive the active rotary drum through the rotary drum driving member 902 9 rotates to make the sealing rotary belt 7 rotate on the driven rotary drum 8 and the active rotary drum 9, and adjusts the joint opening 703 to the front of the isolated storage chamber 304, so that the joint opening 703 is aligned with the isolated storage chamber 304, and the charging connection line 5 inside the isolated storage chamber 304 can be taken out, and the charging plug at the end of the charging connection line 5 is docked with the charging port of the car. After charging is completed, the charging connection line 5 is wound around the charging line hanging wheel 4 and installed again in the isolated storage chamber 304 for storage, and the remote control rotary drum driving member 902 is used to drive the active rotary drum 9 to rotate, so that the adjustment joint opening 703 is transferred to the other side, and the front opening of the isolated storage chamber 304 is covered by the middle joint 702, and the active flip driving member 6 is controlled to rotate in the opposite direction, so that the rotating support rod 3 is rotated and stored again into the base storage chamber 101.

[0043] In this article, there are a few points to note:

[0044] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0045] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0046] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A new energy vehicle charging pile, comprising: The underground charging pile base (1) is characterized in that a rotating support rod (3) is movably connected to the upper surface of the underground charging pile base (1), a water collecting pipe (2) is fixedly connected to the bottom of the underground charging pile base (1), a charging wire hanging wheel (4) is slidably connected to the inside of the rotating support rod (3), a charging connection wire (5) is arranged inside the rotating support rod (3), a charging plug is installed at the end of the charging connection wire (5), the charging connection wire (5) is electrically connected to the underground charging pile base (1), and the underground charging pile base (1) is internally connected to the charging wire hanging wheel (4). An active flip driving member (6) is fixedly connected by bolts, the rotating shaft of the active flip driving member (6) is connected to a flip worm (601) through a coupling, a sealing belt (7) is installed inside the rotating support rod (3), a driven rotary cylinder (8) is rotatably connected inside the rotating support rod (3) through a bearing, and an active rotary cylinder (9) is installed inside the rotating support rod (3), and the sealing belt (7) is movably connected to the driven rotary cylinder (8) and the active rotary cylinder (9); the outer surface of the rotating support rod (3) is surrounded by a sealing flange (301), and the sealing flange The cross section of (301) is an "L"-shaped structure. The rotating support rod (3) is movably connected to the inside of the base storage chamber (101). The right surface end of the rotating support rod (3) is rotatably connected to the inner wall of the base storage chamber (101). The left surface end of the rotating support rod (3) is fixedly connected to a hinged connecting tube (302). The hinged connecting tube (302) is rotatably connected to the left wall of the base storage chamber (101). The outer surface end of the hinged connecting tube (302) is fixedly connected to a connecting tube worm gear (303). The connecting tube worm gear (303) is meshed and connected with the flip worm (601) to form a Worm gear transmission; an isolation storage chamber (304) is provided on the rear surface of the rotating support rod (3) in a vertical state, a storage chamber guide opening (305) is respectively provided through the upper end and the lower end of the isolation storage chamber (304), a floating guide opening (306) is provided through the rear wall of the isolation storage chamber (304), a hanging wheel slider (401) is fixedly connected to the rear surface of the charging cable hanging wheel (4), the hanging wheel slider (401) is slidably connected to the floating guide opening (306), and a hanging wheel outer groove (402) is provided on the outer surface of the charging cable hanging wheel (4).

2. A new energy vehicle charging pile according to claim 1, characterized in that: The upper surface of the underground charging pile base (1) is processed with a base storage cavity (101) of a rectangular structure, the bottom surface of the base storage cavity (101) is provided with a base drainage hole (102), the outer edge of the base storage cavity (101) is provided with a sealing insert edge (103), and the upper surface of the underground charging pile base (1) is hinged with a dust cover plate (104).

3. A new energy vehicle charging pile according to claim 2, characterized in that: A cover plate magnetic block (105) is fixedly connected to the upper surface of the base storage cavity (101); the cover plate magnetic block (105) is located below the dust cover (104); the dust cover (104) and the cover plate magnetic block (105) form a magnetic connection; the dust cover (104) is in contact with the upper surface of the rotating support rod (3).

4. A new energy vehicle charging pile according to claim 2, characterized in that: The end of the water collecting pipe (2) is fixedly connected to a drainage pipe (201), and the upper opening of the water collecting pipe (2) surrounds the lower part of the drainage hole (102) of the base.

5. A new energy vehicle charging pile according to claim 1, characterized in that: The sealing rotary belt (7) comprises a traction synchronous belt (701) and an intermediate connecting belt (702), wherein an intermediate connecting belt (702) is fixedly connected between the two traction synchronous belts (701), and a connecting belt opening (703) is provided on the intermediate connecting belt (702), and the sealing rotary belt (7) is tightly slidably connected to the guide opening (305) of the storage cavity.

6. A new energy vehicle charging pile according to claim 5, characterized in that: Driven synchronous pulleys (801) are provided at both ends of the driven rotary drum (8), and the driven synchronous pulleys (801) are connected to the traction synchronous belt (701). The shaft of the driven rotary drum (8) is rotatably connected to the inside of the rotating support rod (3) through a bearing.

7. A new energy vehicle charging pile according to claim 5, characterized in that: The active rotary drum (9) is in a cylindrical structure. Active synchronous pulleys (901) are provided at both ends of the active rotary drum (9). A rotary drum driving member (902) is provided inside the active rotary drum (9). The rotary drum driving member (902) is fixedly connected to the inner wall of the rotating support rod (3) by bolts. The rotating shaft of the rotary drum driving member (902) is fixedly connected to the active rotary drum (9). The active synchronous pulley (901) is connected to the traction synchronous belt (701).

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