Single-worm double-screw synchronous driving structure

Abstract

The utility model relates to the technical field of transmission structures, and discloses a single-worm double-screw synchronous driving structure which comprises a transversely arranged worm, a first bevel gear and a second bevel gear are arranged on the outer side of the worm, a telescopic sleeve capable of moving telescopically is arranged on the second bevel gear, the telescopic sleeve is in threaded connection with the second bevel gear, and the first bevel gear and the second bevel gear are in threaded connection. A driven screw is arranged in the first bevel gear in a sleeving manner, the driven screw is in threaded connection with the first bevel gear, and the first bevel gear and the second bevel gear are in engaged connection with the worm; the worm rotates to drive the first bevel gear and the second bevel gear to rotate synchronously in situ, the first bevel gear drives the driven screw to ascend and descend, the second bevel gear drives the driving screw to rotate, the driven screw and the driving screw are driven by the single worm to rotate synchronously, and the transmission efficiency is improved; the second bevel gear drives the telescopic sleeve to do telescopic movement relative to the driving screw through the driving screw, and the effect that the double screws rotate synchronously and do telescopic movement in different directions is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission structures, in particular to a single-worm and double-screw synchronous drive structure. Background Art

[0002] Worm gear transmission is a common mechanical transmission method. Worm gear transmission often requires reciprocating motion. A single worm refers to a transmission device with only one worm thread on the worm shaft. It has the advantages of simple structure, low manufacturing cost, and high transmission efficiency. It is widely used in various mechanical equipment.

[0003] However, the structure of a single worm driving a single screw is too simple and has low transmission efficiency. Utility Model Content

[0004] The utility model aims to provide a single-worm and double-screw synchronous driving structure, aiming to solve the problems in the prior art that a single-worm driving a single screw has an overly simple structure and low transmission efficiency.

[0005] The utility model is implemented as follows: a single-worm double-screw synchronous drive structure comprises a worm arranged in a horizontal shape, a first helical gear and a second helical gear are arranged on the outer side of the worm, a driving screw is sleeved in the second helical gear, the driving screw is transmission-connected with the second helical gear, a telescopic sleeve is sleeved on the outer periphery of the driving screw and can be telescopically moved relative to the driving screw, the telescopic sleeve is threadedly connected to the driving screw, a passive screw is sleeved in the first helical gear, the passive screw is threadedly connected to the first helical gear, and the first helical gear and the second helical gear are respectively meshed and connected with the worm;

[0006] When the worm is driven to rotate, the first bevel gear and the second bevel gear rotate synchronously in place, the passive screw moves up and down relative to the first bevel gear, the second bevel gear drives the active screw to rotate in place, and the telescopic sleeve moves up and down relative to the active screw, thereby achieving the effect of synchronous telescopic movement of the twin screws in different directions.

[0007] Furthermore, the first bevel gear has a threaded cavity for the passive screw to pass through up and down, and the first bevel gear is threadedly connected to the passive screw through the threaded cavity.

[0008] Furthermore, the telescopic sleeve is coaxially arranged with the active screw.

[0009] Furthermore, the second bevel gear has a fixed cavity for the active screw to pass through up and down, and a synchronous wheel is provided in the fixed cavity. The synchronous wheel and the second bevel gear are meshed and connected through the fixed cavity. The synchronous wheel is sleeved on the outer periphery of the active screw, and the active screw is transmission-connected to the synchronous wheel.

[0010] Furthermore, the first helical gear and the second helical gear are arranged side by side with a relative spacing.

[0011] Furthermore, a worm wheel is sleeved on the outer periphery of the worm, the worm wheel is fixedly connected to the worm, and the worm is meshingly connected to the motor via the worm wheel.

[0012] Furthermore, the worm gear is located between the first bevel gear and the second bevel gear.

[0013] Furthermore, the worm includes a first worm, a second worm and a transmission shaft connecting the first worm and the second worm in series, the worm wheel is fixedly connected to one end of the first worm, the inner side of the worm wheel is enclosed to form a mounting cavity, the first worm has an insert block protruding toward the mounting cavity, one end of the second worm has a groove seat protruding, the second worm is connected to the first worm through the mounting cavity, and the insert block is inserted into the groove seat.

[0014] Furthermore, the worm is connected to a motor for driving the worm to rotate, the motor has a motor shaft, the motor shaft and the worm are meshedly connected via a worm gear, and the motor shaft and the worm are perpendicular to each other.

[0015] Furthermore, the first helical gear and the second helical gear are respectively perpendicular to the worm.

[0016] Compared with the prior art, the single-worm double-screw synchronous drive structure provided by the utility model drives the first bevel gear and the second bevel gear to rotate synchronously in situ through the rotation of the worm, the first bevel gear drives the passive screw to move up and down, and the second bevel gear drives the active screw to rotate, and the passive screw and the active screw are driven to rotate synchronously by the single worm, thereby improving the transmission efficiency; the second bevel gear uses the active screw to drive the telescopic sleeve to telescope relative to the active screw, thereby achieving the effect of synchronous rotation of the double screws and axial telescopic movement; the problem that the single worm drives the single screw, which has the problem of too simple structure and low transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a single worm and double screw synchronous drive structure provided by the utility model;

[0018] Figure 2 It is an exploded three-dimensional schematic diagram of the first bevel gear and the passive screw provided by the utility model;

[0019] Figure 3 It is an exploded three-dimensional schematic diagram of the second helical gear and the active screw provided by the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the integrated worm provided by the utility model;

[0021] Figure 5 It is a three-dimensional schematic diagram of the split worm provided by the utility model.

[0022] In the figure: worm 10, first bevel gear 20, second bevel gear 30, motor 40, worm wheel 11, first worm 12, second worm 13, transmission shaft 14, mounting cavity 15, insert block 16, groove seat 17, passive screw 21, threaded cavity 22, telescopic sleeve 31, active screw 32, fixed cavity 33, synchronous wheel 34, motor shaft 41. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0025] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present utility model. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Reference Figure 1-5 As shown, it is a preferred embodiment provided by the utility model.

[0027] The single worm 10 double-screw synchronous drive structure comprises a worm 10 arranged in a horizontal shape, a first bevel gear 20 and a second bevel gear 30 are arranged on the outer side of the worm 10, a driving screw 32 is sleeved in the second bevel gear 30, the driving screw 32 is transmission-connected with the second bevel gear 30, a telescopic sleeve 31 is sleeved on the outer periphery of the driving screw 32 and is telescopically movable relative to the driving screw 32, the telescopic sleeve 31 is threadedly connected with the driving screw 32, a passive screw 21 is sleeved in the first bevel gear 20, the passive screw 21 is threadedly connected with the first bevel gear 20, and the first bevel gear 20 and the second bevel gear 30 are respectively meshed and connected with the worm 10;

[0028] When the driving worm 10 rotates, the first bevel gear 20 and the second bevel gear 30 rotate synchronously in place, the passive screw 21 moves up and down relative to the first bevel gear 20, the second bevel gear 30 drives the active screw 32 to rotate in place, and the telescopic sleeve 31 moves up and down relative to the active screw 32, thereby achieving the effect of synchronous telescopic movement of the twin screws in different directions.

[0029] The above-provided single worm 10 double-screw synchronous drive structure drives the first bevel gear 20 and the second bevel gear 30 to rotate synchronously in situ through the rotation of the worm 10, the first bevel gear 20 drives the passive screw 21 to move up and down, and the second bevel gear 30 drives the active screw 32 to rotate. The passive screw 21 and the active screw 32 are driven to rotate synchronously by the single worm 10, thereby improving the transmission efficiency; the second bevel gear 30 uses the active screw 32 to drive the telescopic sleeve 31 to telescope relative to the active screw 32, thereby achieving the effect of synchronous rotation of the double screws and axial telescopic movement; and solves the problem that the single worm 10 drives the single screw, which has a simple structure and low transmission efficiency.

[0030] In this embodiment, the first bevel gear 20 has a threaded cavity 22 for the passive screw 21 to pass through, and the first bevel gear 20 and the passive screw 21 are threadedly connected through the threaded cavity 22. In this way, the first bevel gear 20 can threadably drive the passive screw 21 to move up and down through the threaded cavity 22.

[0031] In this embodiment, the telescopic sleeve 31 is coaxially arranged with the active screw 32. In this way, the telescopic sleeve 31 can be telescopically moved along the length direction of the active screw 32. The interior of the telescopic sleeve 31 is provided with a threaded cavity 22, which is threadedly connected to the active screw 32. The active screw 32 drives the telescopic sleeve 31 to telescopically move through its own thread.

[0032] In this embodiment, the second bevel gear 30 has a fixed cavity 33 for the active screw 32 to pass through up and down, and a synchronous wheel 34 is provided in the fixed cavity 33. The synchronous wheel 34 is meshed and connected with the second bevel gear 30 through the fixed cavity 33. The synchronous wheel 34 is sleeved on the outer periphery of the active screw 32, and the active screw 32 is connected to the synchronous wheel 34 in transmission.

[0033] The second bevel gear 30 meshes with the outer side of the synchronous wheel 34 through the gear groove of the fixed cavity 33 , so that the second bevel gear 30 can drive the synchronous wheel 34 to rotate in situ, and then drive the active screw 32 to rotate in situ through the synchronous wheel 34 .

[0034] In this embodiment, the first bevel gear 20 and the second bevel gear 30 are arranged side by side with a relative spacing. In this way, the utilization rate of the structure on the space can be reduced, and the two will not affect each other.

[0035] In this embodiment, a worm wheel 11 is sleeved on the outer periphery of the worm 10, the worm wheel 11 is fixedly connected to the worm 10, and the worm 10 is meshedly connected to the motor 40 through the worm wheel 11. In this way, the worm wheel 11 can be driven by the motor 40 to rotate, thereby driving the worm 10 to rotate, and the telescopic movement distance of the telescopic sleeve 31 and the passive screw 21 can be effectively and accurately controlled.

[0036] In this embodiment, the worm gear 11 is located between the first bevel gear 20 and the second bevel gear 30. In this way, the rotation of the worm gear 11 will not collide with the first bevel gear 20 and the second bevel gear 30, and this structural arrangement can increase the stability of the meshing transmission.

[0037] In this embodiment, the worm 10 includes a first worm 12, a second worm 13 and a transmission shaft 14 connecting the first worm 12 and the second worm 13 in series. The worm wheel 11 is fixedly connected to one end of the first worm 12. The inner side of the worm wheel 11 encloses a mounting cavity 15. The first worm 12 has an insert block 16 protruding toward the mounting cavity 15. A groove seat 17 is protruding on one end of the second worm 13. The second worm 13 is connected to the first worm 12 through the mounting cavity 15, and the insert block 16 is inserted into the groove seat 17.

[0038] The worm 10 improves the recyclability of the structure through the detachability of the first worm 12 and the second worm 13, and the rotation direction of the first bevel gear 20 and the second bevel gear 30 can be controlled by the thread direction between the first worm 12 and the second worm 13, thereby improving the wide applicability of the worm 10 structure.

[0039] In this embodiment, the worm 10 is connected to a motor 40 for driving the worm 10 to rotate. The motor 40 has a motor shaft 41. The motor shaft 41 is meshed with the worm 10 via a worm wheel 11, and the motor shaft 41 and the worm 10 are perpendicular to each other.

[0040] The motor 40 can drive the worm wheel 11 to rotate via the threads on the motor shaft 41 , thereby enabling the worm wheel 11 to drive the worm 10 to rotate.

[0041] The first helical gear 20 and the second helical gear 30 are perpendicular to the worm 10 .

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Single worm and twin screw synchronous drive structure, characterized in that: It comprises a worm arranged in a horizontal shape, a first helical gear and a second helical gear are arranged on the outer side of the worm, a driving screw is sleeved in the second helical gear, the driving screw is transmission-connected with the second helical gear, a telescopic sleeve is sleeved on the outer periphery of the driving screw and can be telescopically moved relative to the driving screw, the telescopic sleeve is threadedly connected with the driving screw, a passive screw is sleeved in the first helical gear, the passive screw is threadedly connected with the first helical gear, and the first helical gear and the second helical gear are respectively meshed and connected with the worm; When the worm is driven to rotate, the first bevel gear and the second bevel gear rotate synchronously in place, the passive screw moves up and down relative to the first bevel gear, the second bevel gear drives the active screw to rotate in place, and the telescopic sleeve moves up and down relative to the active screw, thereby achieving the effect of synchronous telescopic movement of the twin screws in different directions.

2. The single-worm twin-screw synchronous drive structure according to claim 1, characterized in that: The first bevel gear has a thread cavity for the passive screw to pass through up and down, and the first bevel gear is threadedly connected with the passive screw through the thread cavity.

3. The single-worm twin-screw synchronous drive structure according to claim 2, characterized in that: The telescopic sleeve is coaxially arranged with the active screw.

4. The single-worm twin-screw synchronous drive structure according to claim 3, characterized in that: The second bevel gear has a fixed cavity for the active screw to pass through up and down, and a synchronous wheel is provided in the fixed cavity. The synchronous wheel is meshed and connected with the second bevel gear through the fixed cavity. The synchronous wheel is sleeved on the outer circumference of the active screw, and the active screw is transmission-connected with the synchronous wheel.

5. The single-worm twin-screw synchronous drive structure according to claim 4, characterized in that: The first helical gear and the second helical gear are arranged side by side with a relative spacing.

6. The single-worm twin-screw synchronous drive structure according to any one of claims 1 to 5, characterized in that: A worm wheel is sleeved on the outer circumference of the worm, the worm wheel is fixedly connected to the worm, and the worm is meshingly connected to the motor through the worm wheel.

7. The single-worm twin-screw synchronous drive structure according to claim 6, characterized in that: The worm gear is located between the first helical gear and the second helical gear.

8. The single-worm twin-screw synchronous drive structure according to claim 6, characterized in that: The worm includes a first worm, a second worm and a transmission shaft connecting the first worm and the second worm in series. The worm wheel is fixedly connected to one end of the first worm. The inner side of the worm wheel is surrounded by a mounting cavity. The first worm has an insert block protruding toward the mounting cavity. A groove seat is protruding on one end of the second worm. The second worm is connected to the first worm through the mounting cavity, and the insert block is inserted into the groove seat.

9. The single-worm twin-screw synchronous drive structure according to claim 7, characterized in that: The worm is connected to a motor for driving the worm to rotate. The motor has a motor shaft. The motor shaft and the worm are meshed and connected via a worm gear. The motor shaft and the worm are perpendicular to each other.

10. The single-worm twin-screw synchronous drive structure according to any one of claims 1 to 5, characterized in that: The first helical gear and the second helical gear are respectively perpendicular to the worm.

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