Flexibly-connected power transmission device capable of slightly reversing

Abstract

The utility model discloses a flexibly connected power transmission device capable of slightly reversing, which belongs to the technical field of transmission mechanisms and comprises a shaft seat, a rotating wheel shaft and a main transmission shaft, a first bevel gear is coaxially fixed on the main transmission shaft, the bottom end of a driving shaft is fixedly connected with a second bevel gear meshed with the first bevel gear, and the second bevel gear is meshed with the rotating wheel shaft. The top end of the driving shaft is fixedly connected with a planetary gear, the bottom end of the rotating wheel shaft is rotationally connected with three sets of positioning shafts, the bottom ends of the three sets of positioning shafts are fixedly connected with shifting blocks, the three sets of shifting blocks are provided with elastic reset mechanisms, and the inner sides of the three sets of shifting blocks are provided with contact parts. According to the utility model, through the arrangement of the shifting block, the elastic reset mechanism, the positioning shaft and the planetary gear, flexible transmission connection is realized, overload slipping can be realized under the condition that a rotating part is stuck, and the damage to a transmission structure can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission mechanisms, in particular to a power transmission device which is flexibly connected and can be slightly reversed. Background Art

[0002] A transmission mechanism is a mechanism used to transmit power. It can change the mode, direction or speed of movement provided by the power and is used by people for a purpose.

[0003] When metal rings are transported in separate lanes, a continuously rotating wheel is required to continuously move the metal rings to prevent them from getting stuck in the separate lanes so that they can be better transported. Most of the wheels are directly or indirectly installed on the output shaft of the drive motor.

[0004] Regarding the above technical conditions, there is still a defect: the above indirect control of the rotation of the wheel.

[0005] Based on this, the utility model designs a power transmission device with flexible connection and slight reversal to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a power transmission device with flexible connection and slight reversal capability to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flexibly connected and slightly reversible power transmission device, comprising a shaft seat, a rotating wheel shaft and a main transmission shaft, the main transmission shaft is coaxially fixedly connected to the output shaft of the driving motor, the top end of the rotating wheel shaft is fixedly connected to a rotating member, the inside of the shaft seat is rotatably connected to the driving shaft, the main transmission shaft is coaxially fixed with a first bevel gear, the bottom end of the driving shaft is fixedly connected to a second bevel gear meshing with the first bevel gear, the top end of the driving shaft is fixedly connected to a planetary gear, the bottom end of the rotating wheel shaft is rotatably connected to three groups of positioning shafts, the bottom ends of the three groups of positioning shafts are fixedly connected to shift blocks, the three groups of shift blocks are provided with elastic reset mechanisms, the inner sides of the three groups of shift blocks are provided with contact portions, and the contact portions abut against the convex teeth of the planetary gears.

[0008] By adopting the above technical solution, it is possible to prevent the rotating part from overloading and slipping when it is stuck during transmission.

[0009] Preferably, a ball bearing is further provided between the drive shaft and the shaft seat.

[0010] By adopting the above technical solution, the driving shaft is made more stable when rotating.

[0011] Preferably, the elastic reset mechanism is a reset spring, one end of which is fixedly connected to the rotating wheel shaft, and the other end of which is fixedly connected to the outer side of the shift block and away from the positioning shaft.

[0012] By adopting the above technical solution, the shifting block is reset by the reset spring.

[0013] Preferably, the elastic reset mechanism is three groups of springs, and both ends of each group of springs are respectively connected to two adjacent shifting blocks, and the three groups of shifting blocks and the three groups of springs form an annular structure.

[0014] By adopting the above technical solution, the three shifting blocks are restricted to each other, which is convenient for installation.

[0015] Preferably, the lines connecting the axis centers of the three groups of positioning axes form an equilateral triangle.

[0016] By adopting the above technical solution, the force is more evenly distributed and the transmission effect is increased.

[0017] Preferably, the shape of the shift block is a protrusion extending inwardly from the inner side of a partial circular ring, and the protrusion forms a contact portion.

[0018] By adopting the above technical solution, the contact portion abuts against the convex teeth of the planetary gear during normal transmission.

[0019] In summary, the present application has the following beneficial technical effects: by setting the shift block, elastic reset mechanism, positioning shaft and planetary gear, a flexible transmission connection is achieved, which can prevent overload and slip when the rotating part is stuck, thereby reducing damage to the transmission structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic cross-sectional view of the structure of this embodiment;

[0022] Figure 2 This is a schematic diagram of the front structure of this embodiment;

[0023] Figure 3 This is a structural schematic diagram of the shifting block in this embodiment;

[0024] Figure 4 This is a connection diagram of the first elastic reset mechanism in this embodiment;

[0025] Figure 5 is a connection diagram of the second elastic reset mechanism in this embodiment;

[0026] Figure 6 This is the front assembly diagram of this embodiment;

[0027] Figure 7 It is a side assembly view of this embodiment.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Shaft seat; 2. Rotor shaft; 3. Main transmission shaft; 4. Rotating member; 5. Driving shaft; 6. First bevel gear; 7. Second bevel gear; 8. Planetary gear; 9. Positioning shaft; 10. Shift block; 11. Elastic reset mechanism; 12. Contact part; 13. Ball bearing. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The following is combined with Figure 1-7 This application is described in further detail.

[0032] Reference Figure 1 , Figure 2 and Figure 3 A power transmission device with flexible connection and slight reversibility includes a shaft seat 1, a wheel shaft 2 and a main transmission shaft 3. The main transmission shaft 3 is coaxially fixedly connected to the output shaft of the driving motor. The top of the wheel shaft 2 is fixedly connected with a rotating member 4, and the rotating member 4 is used to sort the metal ring (sleeve). The shaft seat 1 is internally rotatably connected with a driving shaft 5. A ball bearing 13 is also arranged between the driving shaft 5 and the shaft seat 1. A first bevel gear 6 is coaxially fixed on the main transmission shaft 3. The bottom end of the driving shaft 5 is fixedly connected to A second bevel gear 7 meshing with the first bevel gear 6 is connected, a planetary gear 8 is fixedly connected to the top end of the drive shaft 5, and three sets of positioning shafts 9 are rotatably connected to the bottom end of the wheel shaft 2. The bottom ends of the three sets of positioning shafts 9 are fixedly connected to shift blocks 10, and elastic reset mechanisms 11 are provided on the three sets of shift blocks 10 to form an anti-lock structure to reduce the damage to the transmission parts when the rotating part 4 is stuck. Contact parts 12 are provided on the inner sides of the three sets of shift blocks 10, and the contact parts 12 abut against the convex teeth of the planetary gear 8.

[0033] Reference Figure 4The elastic reset mechanism 11 is a reset spring, one end of which is fixedly connected to the rotating wheel shaft 2, and the other end is fixedly connected to the outside of the shift block 10 and away from the positioning shaft 9, so as to limit the shift block 10.

[0034] Reference Figure 5 The elastic reset mechanism 11 is composed of three groups of springs, and the two ends of each group of springs are respectively connected to two adjacent shifting blocks 10. The three groups of shifting blocks 10 and the three groups of springs form an annular structure, which is convenient for installation, and the springs do not need to be connected to the external structure.

[0035] Reference Figure 2 and Figure 3 The connecting lines between the axis centers of the three sets of positioning shafts 9 form an equilateral triangle. The shape of the shift block 10 is a protruding portion extending inward from the inner side of a partial circular ring, and the protruding portion forms a contact portion 12.

[0036] The implementation principle of this embodiment is: when transmitting, the output shaft of the driving motor drives the main transmission shaft 3 to rotate, and then drives the second bevel gear 7 to rotate through the first bevel gear 6, so that the driving shaft 5 and the planetary gear 8 rotate. When working normally, the planetary gear 8 drives the three shifting blocks 10 to rotate along its center, so that the three positioning shafts 9 drive 2 to rotate, and finally drives the rotating member 4 to rotate. When the rotating member 4 is stuck, the wheel shaft 2 can no longer rotate. At this time, the planetary gear 8 needs to continue to rotate. When the torque generated by the planetary gear 8 cannot drive the shifting block 10 to rotate, it will push the side close to the contact portion 12 outward, so that the elastic reset mechanism 11 contracts, and then the planetary gear 8 can continue to rotate, reducing the damage to the planetary gear 8 when the rotating member 4 is stuck. When the rotating member 4 is released from the stuck state, the elastic reset mechanism 11 extends at this time, so that the contact portion 12 on the shifting block 10 contacts the planetary gear 8, thereby achieving continued transmission.

[0037] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power transmission device with flexible connection and micro-reversibility, comprising a shaft seat (1), a rotating wheel shaft (2) and a main transmission shaft (3), wherein the main transmission shaft (3) is coaxially fixedly connected to the output shaft of a driving motor, and a rotating member (4) is fixedly connected to the top end of the rotating wheel shaft (2), characterized in that: The shaft seat (1) is internally rotatably connected with a drive shaft (5); a first bevel gear (6) is coaxially fixed on the main transmission shaft (3); the bottom end of the drive shaft (5) is fixedly connected with a second bevel gear (7) meshing with the first bevel gear (6); the top end of the drive shaft (5) is fixedly connected with a planetary gear (8); the bottom end of the rotating wheel shaft (2) is rotatably connected with three groups of positioning shafts (9); the bottom ends of the three groups of positioning shafts (9) are all fixedly connected with shifting blocks (10); elastic reset mechanisms (11) are provided on the three groups of shifting blocks (10); the inner sides of the three groups of shifting blocks (10) are all provided with contact portions (12); the contact portions (12) abut against the convex teeth of the planetary gears (8).

2. A flexible connection and slightly reversible power transmission device according to claim 1, characterized in that: A ball bearing (13) is also provided between the drive shaft (5) and the shaft seat (1).

3. A flexible connection and slightly reversible power transmission device according to claim 1, characterized in that: The elastic reset mechanism (11) is a reset spring, one end of which is fixedly connected to the rotating wheel shaft (2), and the other end of which is fixedly connected to the outside of the shifting block (10) and at a position away from the positioning shaft (9).

4. A flexible connection and slightly reversible power transmission device according to claim 1, characterized in that: The elastic reset mechanism (11) is composed of three groups of springs, the two ends of each group of springs are respectively connected to two adjacent shifting blocks (10), and the three groups of shifting blocks (10) and the three groups of springs form an annular structure.

5. A flexible connection and slightly reversible power transmission device according to claim 1, characterized in that: The connecting lines between the axis centers of the three groups of positioning shafts (9) form an equilateral triangle.

6. A flexible connection and slightly reversible power transmission device according to claim 1, characterized in that: The shift block (10) is in the shape of a partial circular ring with a protruding portion extending inwardly from the inner side, and the protruding portion forms a contact portion (12).

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