阅读说明：本技术 一种小推车用根据移动速度自动制动的滑轮机构 (Trolley mechanism for automatic braking according to moving speed for trolley ) 是由 刘西勇 于 2021-01-21 设计创作，主要内容包括：本发明涉及制动部件技术领域,且公开了一种小推车用根据移动速度自动制动的滑轮机构,包括转轴,所述转轴的内部活动连接有转轮,所述转轮的内部活动连接有固定轴,所述转轴的正面设置有触发机构,所述固定轴的正面设置有安装座,所述安装座的正面铰接有制动机构,所述固定轴的正面设置有驱动机构,该小推车用根据移动速度自动制动的滑轮机构,通过转轴和触发机构的配合使用,当小推车滑轮转动速度过快时,触发制动机构工作,通过驱动机构和制动机构的配合使用,支杆在限位套的运动下开始转动,使得制动片与转轴的内壁接触从而达到制动效果,节省了人为操作的过程,保证了合适的运输速度,避免货物造成损伤。(The invention relates to the technical field of brake components, and discloses a pulley mechanism for a small handcart, which automatically brakes according to the moving speed, and comprises a rotating shaft, wherein a rotating wheel is movably connected inside the rotating shaft, a fixed shaft is movably connected inside the rotating wheel, a trigger mechanism is arranged on the front surface of the rotating shaft, an installation seat is arranged on the front surface of the fixed shaft, a brake mechanism is hinged on the front surface of the installation seat, a driving mechanism is arranged on the front surface of the fixed shaft, the pulley mechanism for the small handcart, which automatically brakes according to the moving speed, is matched with the rotating shaft and the trigger mechanism for use, when the rotating speed of a pulley of the small handcart is too high, the trigger brake mechanism works, a support rod starts to rotate under the movement of a limit sleeve, so that a brake piece is in contact with the inner wall of the rotating shaft, the brake effect is achieved, and the process of, the proper transportation speed is ensured, and the damage to the goods is avoided.)

1. The utility model provides a pulley mechanism that dolly is with automatic braking according to rate of movement, includes pivot (1), its characterized in that: the front side of the rotating shaft (1) is movably connected with a rotating wheel (2), the inside of the rotating wheel (2) is movably connected with a fixed shaft (3), the front side of the rotating shaft (1) is provided with a trigger mechanism (4), the front side of the fixed shaft (3) is provided with an installation seat (5), the front side of the installation seat (5) is hinged with a brake mechanism (6), the front side of the fixed shaft (3) is provided with a driving mechanism (7), and the front side of the fixed shaft (3) is movably connected with a driving tooth (8);

the trigger mechanism (4) comprises a packaging shell (41), a limiting spring (42) is movably connected inside the packaging shell (41), a first contact (43) is fixedly connected to the side surface of the limiting spring (42), and a second contact (44) is arranged inside the packaging shell (41);

the braking mechanism (6) comprises a supporting rod (61), a limiting sleeve (62) is movably connected to the outer side of the supporting rod (61), a braking plate (63) is hinged to the top of the supporting rod (61), and a buffer spring (64) is arranged between the supporting rod (61) and the braking plate (63);

actuating mechanism (7), including limiting plate (71), the front of limiting plate (71) articulates there is screw rod (72), the outside swing joint of screw rod (72) has stopper (73), the side swing joint of stopper (73) has supporting spring (74).

2. The pulley mechanism for automatic braking according to moving speed of small handcart according to claim 1, characterized in that: the centers of circles of the rotating shaft (1), the rotating wheel (2) and the fixed shaft (3) are at the same point, the rotating shaft (1) is fixedly connected with a trolley pulley, and the fixed shaft (3) is fixedly connected with a trolley pulley shaft; the three groups of trigger mechanisms (4) are arranged and have the same internal structure and specification, and the three groups of trigger mechanisms (4) are uniformly distributed at symmetrical positions by taking the circle center of the rotating shaft (1) as the center; the braking mechanisms (6) are provided with three groups, the internal structures and the specifications of the three groups are the same, and the three groups of braking mechanisms (6) are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft (3) as the center.

3. The pulley mechanism for automatic braking according to moving speed of small handcart according to claim 1, characterized in that: the three mounting seats (5) are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft (3) as the center and correspond to the three groups of brake mechanisms (6); the driving mechanisms (7) are provided with three groups, the internal structures and specifications of the driving mechanisms are the same, and the driving mechanisms are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft (3) as the center; the number of the driving teeth (8) is three, the driving teeth are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft (3) as the center, and the driving teeth correspond to the three groups of driving mechanisms (7).

4. The pulley mechanism for automatic braking according to moving speed of small handcart according to claim 1, characterized in that: one end of the limiting spring (42) is fixedly connected with the left side of the packaging shell (41), the other side of the limiting spring is fixedly connected with the first contact (43), the second contact (44) is fixedly connected with the right side of the packaging shell (41), the second contact (44) is arranged on the motion track of the first contact (43), and the second contact (44) is electrically connected with the driving mechanism (7).

5. The pulley mechanism for automatic braking according to moving speed of small handcart according to claim 1, characterized in that: one end of the supporting rod (61) is hinged to the front face of the mounting seat (5), the other end of the supporting rod is hinged to the brake pad (63), the limiting sleeve (62) is hinged to the front face of the rotating wheel (2), and the supporting rod (61) penetrates through the limiting sleeve (62) and is movably connected to the inside of the limiting sleeve (62); each group of brake mechanisms (6) comprises two buffer springs (64) with the same specification, and brake discs (63) in the same group of brake mechanisms (6) are connected with the support rod (61) through the two buffer springs (64).

6. The pulley mechanism for automatic braking according to moving speed of small handcart according to claim 1, characterized in that: the limiting plate (71) is fixedly connected to the inner side of the rotating wheel (2), the screw rod (72) is hinged to the front face of the limiting plate (71), the driving tooth (8) is driven by the driving motor, the output end of the driving motor is fixedly connected with the driving tooth (8), and the second contact (44) is electrically connected with the driving motor; the limiting block (73) is movably connected to the outer side of the screw rod (72) and is connected with the rotating wheel (2) through a supporting spring (74); the driving teeth (8) and the screw rod (72) are always in a meshed state.

Technical Field

The invention relates to the technical field of brake components, in particular to a pulley mechanism for a trolley, which automatically brakes according to the moving speed.

Background

Braking refers to an operation of stopping or reducing the speed of a running locomotive, vehicle, other transportation means, machine, or the like. The general principle of braking is that a wheel or disk is fixed on the high-speed shaft of the machine, and a brake shoe, belt or disk matched with the wheel or disk is mounted on the machine base, so that the wheel or disk can produce braking torque under the action of external force. In order to enable a moving object to have controllability, a braking system is required to be arranged on the pulley, and a common trolley is also arranged in logistics transportation, but the braking system of the logistics trolley is basically operated manually, so that not only can proper transportation speed be guaranteed, but also the braking effect is not good due to errors of operators, the logistics transportation efficiency is influenced, and even transported goods are damaged.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the pulley mechanism for the trolley, which can automatically brake according to the moving speed, has the advantage of automatically braking according to the rotating speed of the trolley pulley, and solves the problem that the proper transportation speed cannot be ensured by manual braking, and the transportation efficiency is influenced.

(II) technical scheme

In order to achieve the aim of automatically braking according to the rotating speed of the trolley pulley, the invention provides the following technical scheme: a pulley mechanism for a small handcart and capable of automatically braking according to moving speed comprises a rotating shaft, wherein a rotating wheel is movably connected inside the rotating shaft, a fixed shaft is movably connected inside the rotating wheel, a trigger mechanism is arranged on the front surface of the rotating shaft, an installation seat is arranged on the front surface of the fixed shaft, a braking mechanism is hinged to the front surface of the installation seat, a driving mechanism is arranged on the front surface of the fixed shaft, and driving teeth are movably connected to the front surface of the fixed shaft;

the trigger mechanism comprises an encapsulation shell, a limit spring is movably connected inside the encapsulation shell, a first contact is fixedly connected to the side surface of the limit spring, and a second contact is arranged inside the encapsulation shell;

the braking mechanism comprises a supporting rod, the outer side of the supporting rod is movably connected with a limiting sleeve, the top of the supporting rod is hinged with a braking piece, and a buffer spring is arranged between the supporting rod and the braking piece;

the driving mechanism comprises a limiting plate, a screw rod is hinged to the front face of the limiting plate, a limiting block is movably connected to the outer side of the screw rod, and a supporting spring is movably connected to the side face of the limiting block.

Preferably, the centers of circles of the rotating shaft, the rotating wheel and the fixed shaft are at the same point, the rotating shaft is fixedly connected with a trolley pulley, and the fixed shaft is fixedly connected with a trolley pulley shaft; the three groups of trigger mechanisms are arranged and have the same internal structure and specification, and are uniformly distributed at symmetrical positions by taking the circle center of the rotating shaft as the center; the braking mechanism is provided with three groups, the internal structures and specifications of the three groups are the same, and the three groups of braking mechanisms are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft as the center.

Preferably, the number of the mounting seats is three, the mounting seats are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft as the center and correspond to the three groups of brake mechanisms; the driving mechanisms are provided with three groups, the internal structures and specifications of the driving mechanisms are the same, and the driving mechanisms are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft as the center; the driving teeth are three, are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft as the center, and correspond to the three groups of driving mechanisms.

Preferably, one end of the limiting spring is fixedly connected with the left side of the packaging shell, the other side of the limiting spring is fixedly connected with the first contact, the second contact is fixedly connected with the right side of the packaging shell, the second contact is arranged on a motion track of the first contact, and the second contact is electrically connected with the driving mechanism.

Preferably, one end of the supporting rod is hinged to the front face of the mounting seat, the other end of the supporting rod is hinged to the braking piece, the limiting sleeve is hinged to the front face of the rotating wheel, and the supporting rod penetrates through the limiting sleeve and is movably connected to the inner portion of the limiting sleeve; each group of brake mechanisms comprises two buffer springs with the same specification, and the brake discs and the support rods in the same group of brake mechanisms are connected through the two buffer springs.

Preferably, the limiting plate is fixedly connected to the inner side of the rotating wheel, the screw is hinged to the front face of the limiting plate, the driving gear is driven by the driving motor, the output end of the driving motor is fixedly connected with the driving gear, and the contact II is electrically connected with the driving motor; the limiting block is movably connected to the outer side of the screw rod and is connected with the rotating wheel through a supporting spring; the driving teeth and the screw rod are always in a meshed state.

(III) advantageous effects

Compared with the prior art, the invention provides a pulley mechanism for a trolley, which automatically brakes according to the moving speed, and has the following beneficial effects:

this small handcart is with pulley mechanism according to moving speed automatic braking, use through pivot and trigger mechanism's cooperation, when small handcart pulley slew velocity was too fast, trigger brake mechanism work, use through actuating mechanism and brake mechanism's cooperation, branch begins to rotate under the motion of stop collar for thereby the braking piece reaches braking effect with the inner wall contact of pivot, has saved the process of manual operation, has guaranteed suitable transportation speed, avoids the goods to cause the damage.

Drawings

FIG. 1 is a schematic view showing the connection of the structures of the present invention;

FIG. 2 is a schematic view showing the connection of the various structures of the braking mechanism of the present invention;

FIG. 3 is a schematic view showing the connection of the driving mechanism of the present invention;

fig. 4 is a schematic connection diagram of the structures of the triggering mechanism of the present invention.

In the figure: 1. a rotating shaft; 2. a rotating wheel; 3. a fixed shaft; 4. a trigger mechanism; 5. a mounting seat; 6. a brake mechanism; 7. a drive mechanism; 8. a drive tooth; 41. a package housing; 42. a limiting spring; 43. a first contact; 44. a second contact; 61. a strut; 62. a limiting sleeve; 63. a brake pad; 64. a buffer spring; 71. a limiting plate; 72. a screw; 73. a limiting block; 74. supporting the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a pulley mechanism for a dolly capable of automatically braking according to a moving speed comprises a rotating shaft 1, a rotating wheel 2 is movably connected inside the rotating shaft 1, a fixed shaft 3 is movably connected inside the rotating wheel 2, a trigger mechanism 4 is arranged on the front surface of the rotating shaft 1, an installation seat 5 is arranged on the front surface of the fixed shaft 3, a brake mechanism 6 is hinged on the front surface of the installation seat 5, the centers of circles of the rotating shaft 1, the rotating wheel 2 and the fixed shaft 3 are at the same point, the rotating shaft 1 is fixedly connected with a dolly pulley, and the fixed shaft 3 is fixedly connected with a dolly pulley shaft; three groups of trigger mechanisms 4 are arranged, the internal structures and specifications of the trigger mechanisms are the same, and the three groups of trigger mechanisms 4 are uniformly distributed at symmetrical positions by taking the circle center of the rotating shaft 1 as the center;

the three groups of braking mechanisms 6 are arranged and have the same internal structure and specification, and the three groups of braking mechanisms 6 are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft 3 as the center; the front surface of the fixed shaft 3 is provided with three driving mechanisms 7, and the three mounting seats 5 are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft 3 as the center and correspond to the three groups of braking mechanisms 6; the driving mechanisms 7 are provided with three groups, have the same internal structure and specification and are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft 3 as the center; three driving teeth 8 are arranged, are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft 3 as the center and correspond to the three groups of driving mechanisms 7; the front surface of the fixed shaft 3 is movably connected with a driving gear 8;

the trigger mechanism 4 comprises a packaging shell 41, a limiting spring 42 is movably connected inside the packaging shell 41, a first contact 43 is fixedly connected to the side surface of the limiting spring 42, and a second contact 44 is arranged inside the packaging shell 41; one end of the limiting spring 42 is fixedly connected with the left side of the packaging shell 41, the other side of the limiting spring is fixedly connected with the first contact 43, the second contact 44 is fixedly connected with the right side of the packaging shell 41, the second contact 44 is arranged on the motion track of the first contact 43, and the second contact 44 is electrically connected with the driving mechanism 7;

the braking mechanism 6 comprises a supporting rod 61, a limiting sleeve 62 is movably connected to the outer side of the supporting rod 61, a braking piece 63 is hinged to the top of the supporting rod 61, and a buffer spring 64 is arranged between the supporting rod 61 and the braking piece 63; one end of the supporting rod 61 is hinged to the front face of the mounting seat 5, the other end of the supporting rod is hinged to the brake pad 63, the limiting sleeve 62 is hinged to the front face of the rotating wheel 2, and the supporting rod 61 penetrates through the limiting sleeve 62 and is movably connected to the inner portion of the limiting sleeve 62; each group of braking mechanisms 6 comprises two buffer springs 64 with the same specification, and the brake discs 63 and the support rods 61 in the same group of braking mechanisms 6 are connected through the two buffer springs 64;

the driving mechanism 7 comprises a limit plate 71, the front surface of the limit plate 71 is hinged with a screw 72, the outer side of the screw 72 is movably connected with a limit block 73, and the side surface of the limit block 73 is movably connected with a supporting spring 74; the limiting plate 71 is fixedly connected to the inner side of the rotating wheel 2, the screw 72 is hinged to the front face of the limiting plate 71, the driving tooth 8 is driven by the driving motor, the output end of the driving motor is fixedly connected with the driving tooth 8, and the second contact 44 is electrically connected with the driving motor; the limiting block 73 is movably connected to the outer side of the screw 72 and is connected with the rotating wheel 2 through a supporting spring 74; the driving tooth 8 and the screw 72 are always in a meshed state.

When in use, because the circle centers of the rotating shaft 1, the rotating wheel 2 and the fixed shaft 3 are at the same point, the rotating shaft 1 is fixedly connected with a trolley pulley, and the fixed shaft 3 is fixedly connected with a trolley pulley shaft; when the trolley moves, the pulley starts to rotate, namely the rotating shaft 1 starts to rotate, and the fixed shaft 3 and the rotating wheel 2 are in a static state; when the rotating speed of the small cart pulley is too high and exceeds the safe speed range, the three groups of trigger mechanisms 4 are arranged and have the same internal structure and specification, and the three groups of trigger mechanisms 4 are uniformly distributed at symmetrical positions by taking the circle center of the rotating shaft 1 as the center;

one end of a limiting spring 42 is fixedly connected with the left side of the packaging shell 41, the other side of the limiting spring is fixedly connected with a first contact 43, a second contact 44 is fixedly connected with the right side of the packaging shell 41, the second contact 44 is arranged on the motion track of the first contact 43, the second contact 44 is electrically connected with the driving mechanism 7, under the action of centrifugal force, the first contact 43 starts to move towards the second contact 44 until the second contact 44 is contacted, because the driving tooth 8 is driven by the driving motor, the output end of the driving motor is fixedly connected with the driving tooth 8, and the second contact 44 is electrically connected with the driving motor;

at the moment, the driving teeth 8 start to rotate, and three mounting seats 5 are arranged, are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft 3 as the center and correspond to the three groups of braking mechanisms 6; the driving mechanisms 7 are provided with three groups, have the same internal structure and specification and are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft 3 as the center; three driving teeth 8 are arranged, are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft 3 as the center and correspond to the three groups of driving mechanisms 7;

the limiting plate 71 is fixedly connected to the inner side of the rotating wheel 2, the screw 72 is hinged to the front face of the limiting plate 71, and the limiting block 73 is movably connected to the outer side of the screw 72 and connected with the rotating wheel 2 through a supporting spring 74; the driving tooth 8 and the screw rod 72 are always in a meshed state, the screw rod 72 and the driving tooth 8 are always meshed under the support of the supporting spring 74, and the rotation of the driving tooth 8 drives the screw rod 72 to move, namely the rotating wheel 2 rotates;

because the three groups of braking mechanisms 6 are arranged and have the same internal structure and specification, the three groups of braking mechanisms 6 are uniformly distributed at symmetrical positions by taking the circle center of the fixed shaft 3 as the center, one end of the supporting rod 61 is hinged on the front surface of the mounting seat 5, the other end of the supporting rod is hinged with the braking piece 63, the limiting sleeve 62 is hinged on the front surface of the rotating wheel 2, and the supporting rod 61 penetrates through the limiting sleeve 62 and is movably connected inside the limiting sleeve 62; each group of braking mechanisms 6 comprises two buffer springs 64 with the same specification, a braking plate 63 in the same group of braking mechanisms 6 is connected with a support rod 61 through the two buffer springs 64, when the rotating wheel 2 rotates, the limiting sleeve 62 synchronously rotates in the same direction, the support rod 61 starts to rotate under the limitation of the limiting sleeve 62, the braking plate 63 is enabled to be in contact with the inner wall of the rotating shaft 1, and therefore the rotating speed of the small trolley pulley is reduced to be within a safe range;

the above process is shown in FIG. 1.

To sum up, this small handcart is with pulley mechanism according to moving speed automatic braking uses through the cooperation of pivot 1 and trigger mechanism 4, when small handcart pulley slew velocity is too fast, triggers the work of arrestment mechanism 6, uses through the cooperation of actuating mechanism 7 and arrestment mechanism 6, and branch 61 begins to rotate under the motion of stop collar 62 for thereby braking piece 63 reaches the braking effect with the inner wall contact of pivot 1, has saved the process of manual operation, has guaranteed suitable transportation speed, avoids the goods to cause the damage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.