Worm and gear transmission device capable of moving linearly

Abstract

The worm and gear transmission device comprises a shell, a worm is arranged in the shell, the two ends of the worm are rotationally connected to the shell, a lead screw is arranged in the middle of the shell, polished rods are coaxially arranged at the two ends of the lead screw, the polished rods are rotationally connected to the shell, the worm is provided with a worm gear, and the worm gear is arranged on the worm. An internal thread is arranged in the middle of the worm gear, the worm gear is in threaded connection with the lead screw through the internal thread, the worm gear is externally meshed with the worm, and the two ends of the worm gear are rotationally connected to the shell. The method has the effect of reducing the failure rate.

Description

Technical Field

[0001] This application relates to the technical field of grinding equipment, and particularly to a worm and worm gear transmission device capable of linear motion. Background Art

[0002] As a common mechanical transmission method, worm and worm gear transmission has the advantages of large transmission ratio, compact structure, smooth transmission, etc., and is widely used in the mechanical field. However, traditional worm and worm gear transmission mainly realizes rotational motion. For occasions that require linear motion, additional conversion mechanisms are usually needed, which increases the complexity and cost of the system. Currently, in order to achieve the linear motion of the worm and worm gear transmission device, a common method is to connect a conversion mechanism, such as a crank-slider mechanism or a rack and pinion mechanism, to the output end of the worm and worm gear transmission device to convert the rotational motion into linear motion. Ho

[0003] However, these methods require additional structures separately, resulting in more transmission rod mechanisms and a more complex equipment structure, thus leading to prone to failures. Utility Model Content

[0004] In order to reduce the failure rate, this application provides a worm and worm gear transmission device capable of linear motion.

[0005] The worm and worm gear transmission device capable of linear motion provided by this application adopts the following technical solutions:

[0006] A worm and worm gear transmission device capable of linear motion includes a housing. A worm is arranged inside the housing, and both ends of the worm are rotatably connected to the housing. A lead screw is arranged in the middle of the housing, and smooth rods are coaxially arranged at both ends of the lead screw. The smooth rods are rotatably connected to the housing. A worm gear is arranged on the worm. An internal thread is arranged in the middle of the worm gear. The worm gear is threadedly connected to the lead screw through the internal thread. The worm gear is externally meshed with the worm, and both ends of the worm gear are rotatably connected to the housing.

[0007] By adopting the above technical solutions, the worm gear and the lead screw are threadedly connected. When both ends of the lead screw are fixed and the worm gear rotates, the worm gear will move along the axial direction of the lead screw. Since the worm gear is rotatably connected to the housing, the housing will be driven to move along the axial direction of the lead screw. Through the cooperation of the worm gear and the lead screw, the housing can be directly driven to move, thereby reducing the equipment complexity and reducing the failure rate.

[0008] Optionally, there are two housings. The worms on the two housings are coaxially arranged and connected by a coupling. A driving motor is arranged on one of the housings, and the driving motor is connected to the worm.

[0009] By adopting the above technical solution, the two shells are connected by a coupling, and a driving motor is arranged on one of the shells, so that the two shells can be driven to move simultaneously.

[0010] Optionally, an installation part is coaxially arranged in the middle of the worm gear, the installation part is sleeved on the lead screw in a threaded manner, and the two ends of the installation part are respectively rotatably connected to the shell.

[0011] By adopting the above technical solution, the worm gear is rotatably connected to the shell through the installation part, and is threadedly connected to the lead screw through the installation part.

[0012] Optionally, retaining rings are fixed to the end faces at both ends of the installation part, and the smooth rod passes through the retaining rings.

[0013] By adopting the above technical solution, retaining rings are arranged at both ends of the installation part, and the lead screw can be blocked by the retaining rings, so as to block the moving positions of the shell and the worm gear, and reduce the possibility of the worm gear disengaging from the lead screw.

[0014] Optionally, a transmission shaft is coaxially and fixedly connected to one end of each of the two worm shafts close to each other, the transmission shaft rotatably penetrates to the outside of the shell, and a first keyway is formed in the peripheral wall of the transmission shaft.

[0015] By adopting the above technical solution, during installation, the two transmission shafts are connected by a coupling, so that two worm shafts can be driven to rotate by one driving source.

[0016] Optionally, an input shaft is arranged at one end of the worm shaft of one of the shells far from the transmission shaft, a through hole is formed in the input shaft, and a second keyway is formed in the peripheral wall of the through hole.

[0017] By adopting the above technical solution, the input shaft is connected to the driving motor, and the worm shaft is driven to rotate through the input shaft.

[0018] Optionally, an installation boss is arranged on one side of the shell provided with the input shaft far from the transmission shaft, and the installation boss and the input shaft are coaxially arranged.

[0019] By adopting the above technical solution, during installation, the driving motor is installed on the installation boss and connected to the input shaft.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. The worm gear and the lead screw are in threaded connection. When the two ends of the lead screw are fixed and the worm gear rotates, the worm gear will move along the axis direction of the lead screw. Since the worm gear is rotatably connected to the shell, the shell will be driven to move along the axis direction of the lead screw. Through the cooperation of the worm gear and the lead screw, the shell can be directly driven to move, thereby reducing the complexity of the equipment and reducing the failure rate;

[0022] 2. Retaining rings are provided at both ends of the installation part. The lead screw can be blocked by the retaining rings, thereby blocking the moving positions of the housing and the worm wheel, and reducing the possibility of the worm wheel detaching from the lead screw. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of this embodiment;

[0024] Figure 2 is a schematic structural diagram of hiding the housing in this embodiment;

[0025] Figure 3 is a schematic structural diagram of the worm wheel in this embodiment.

[0026] In the figure, 1. Housing; 2. Worm; 21. Transmission shaft; 211. First keyway; 22. Input shaft; 221. Second keyway; 3. Worm wheel; 4. Installation part; 41. Retaining ring; 5. Lead screw; 51. Smooth rod. Detailed Embodiment

[0027] The following is a further detailed description of this application in conjunction with the attached Figures 1-3 drawings.

[0028] The embodiment of this application discloses a worm and worm wheel transmission device capable of linear motion. Referring to Figure 1 and Figure 2 , it includes two housings 1. A worm 2 is arranged inside the housing 1. The two ends of the worm 2 are rotatably connected to the housing 1. The worms 2 in the two housings 1 are coaxially arranged. The ends of the two worms 2 close to each other are coaxially and fixedly connected with a transmission shaft 21. The transmission shaft 21 rotatably penetrates to the outside of the housing 1, and a first keyway 211 is formed on the peripheral wall of the transmission shaft 21. During installation, the two transmission shafts 21 are connected by two couplings, so that the two worms 2 can rotate together, facilitating driving the two worms 2 to rotate by one driving source.

[0029] Referring to Figure 1 and the figure, one end of the worm 2 of one of the housings 1 far from the transmission shaft 21 is coaxially and fixedly connected with an input shaft 22. A through hole is formed on the input shaft 22, and a second keyway 221 is formed on the peripheral wall of the through hole. The length direction of the second keyway 221 is parallel to the axis direction of the input shaft 22. A mounting boss protrudes from the side of the housing 1 provided with the input shaft 22 far from the transmission shaft 21. The mounting boss and the input shaft 22 are coaxially arranged, facilitating the installation of the driving motor.

[0030] Referring to Figure 2 and Figure 3, a lead screw 5 is provided in the middle of the housing 1. Both ends of the lead screw 5 are coaxially and fixedly connected with smooth rods 51, and the smooth rods 51 are rotatably connected to the housing 1. The worm 2 is provided with a worm gear 3. The middle of the worm gear 3 is coaxially and fixedly connected with a mounting portion 4. A mounting hole is provided in the middle of the mounting portion 4. The inner wall of the mounting hole has internal threads, and the mounting hole is threadedly sleeved on the lead screw 5. Both ends of the mounting portion 4 are rotatably connected to the housing 1, and the worm gear 3 is externally engaged with the worm 2. The worm gear and the lead screw 5 are in threaded connection. When both ends of the lead screw 5 are fixed and the worm gear 3 rotates, the worm gear 3 will move along the axis direction of the lead screw 5. Since the worm gear 3 is rotatably connected to the housing 1, the housing 1 will be driven to move along the axis direction of the lead screw 5.

[0031] Refer to Figure 2 and Figure 3 , end faces at both ends of the mounting portion 4 are fixedly connected with retaining rings 41, and the smooth rods 51 rotatably pass through the retaining rings 41. Retaining rings 41 are provided at both ends of the mounting portion 4. The lead screw 5 can be blocked by the retaining rings 41, so as to block the moving positions of the housing 1 and the worm gear 3, and reduce the possibility of the worm gear 3 disengaging from the lead screw 5.

[0032] The implementation principle of a worm gear 3 and worm 2 transmission device capable of linear motion in an embodiment of the present application is as follows: The worm gear 3 and the lead screw 5 are in threaded connection. When both ends of the lead screw 5 are fixed and the worm gear 3 rotates, the worm gear 3 will move along the axis direction of the lead screw 5. Since the worm gear 3 is rotatably connected to the housing 1, the housing 1 will be driven to move along the axis direction of the lead screw 5. Through the cooperation of the worm gear 3 and the lead screw 5, the housing 1 can be directly driven to move, thereby reducing the complexity of the equipment and reducing the failure rate.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A worm gear transmission device capable of linear motion, characterized in that: The invention comprises a housing (1), wherein a worm (2) is arranged inside the housing (1), and the two ends of the worm (2) are rotatably connected to the housing (1); a lead screw (5) is arranged in the middle of the housing (1), and a light rod (51) is coaxially arranged at the two ends of the lead screw (5), and the light rod (51) is rotatably connected to the housing (1); the worm (2) is provided with a worm wheel (3), and the middle of the worm wheel (3) is provided with an internal thread, and the worm wheel (3) is threadedly connected to the lead screw (5) via the internal thread; the worm wheel (3) is externally meshed with the worm (2), and the two ends of the worm wheel (3) are rotatably connected to the housing (1).

2. A worm gear transmission capable of linear motion according to claim 1, characterized in that: Two housings (1) are provided, and the worms (2) on the two housings (1) are coaxially arranged and connected via a coupling, and a drive motor is provided on one of the housings (1), and the drive motor is connected to the worm (2).

3. A worm gear transmission capable of linear motion according to claim 1, characterized in that: A mounting portion (4) is coaxially arranged in the middle of the worm wheel (3); the mounting portion (4) is threadedly sleeved on the screw rod (5); and both ends of the mounting portion (4) are rotatably connected to the housing (1).

4. A worm gear transmission capable of linear motion according to claim 3, characterized in that: Securing rings (41) are fixed to the end surfaces at both ends of the mounting portion (4), and the polished rod (51) is inserted through the securing rings (41).

5. A worm gear transmission capable of linear motion according to claim 2, characterized in that: One end of the two worms (2) close to each other is coaxially fixedly connected to a transmission shaft (21), the transmission shaft (21) is rotatably inserted into the outside of the housing (1), and a first keyway (211) is provided on a peripheral wall of the transmission shaft (21).

6. A worm gear transmission capable of linear motion according to claim 5, characterized in that: An input shaft (22) is provided at one end of the worm (2) of one of the housings (1) away from the transmission shaft (21), a through hole is provided on the input shaft (22), and a second keyway (221) is provided on a peripheral wall of the through hole.

7. A worm gear transmission capable of linear motion according to claim 6, characterized in that: A mounting boss is provided on the side of the housing (1) on which the input shaft (22) is provided, away from the transmission shaft (21); the mounting boss and the input shaft (22) are coaxially arranged.

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