Worm and gear speed reducer

Abstract

The utility model provides a worm and gear speed reducer, which relates to the technical field of speed reducers, and comprises a shell, a main shaft, a worm gear and a worm, the outer surface of the shell is provided with a connecting cylinder, the connecting cylinder is internally provided with a through groove for accommodating the connecting end of the worm, the connecting cylinder is internally and uniformly provided with grooves communicated with the through groove, and the main shaft is arranged in the through groove. The device further comprises an end cap with the through middle, threaded holes are formed in the bottom of the groove, the end, away from the shell, of the connecting cylinder and the end cap, the connecting cylinder and the shell are connected through bolts, and the connecting cylinder and the end cap are connected through bolts. One end of the worm, the coupler and the output end of the motor can be protected and shielded, so that the parts are prevented from being exposed in air for a long time, the corrosion condition is reduced, the mass of the connecting cylinder can be reduced through the formed groove, the inner surface area of the connecting cylinder is increased, carrying is convenient, and meanwhile the service life of the connecting cylinder is prolonged. And the heat dissipation capability of the connecting cylinder can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a worm gear reducer. Background Art

[0002] A reducer is an independent component consisting of a gear transmission, a worm transmission, and a gear-worm transmission enclosed in a rigid housing. Its main function is to reduce the speed and increase the torque. When the worm is connected to the output end of the motor, it needs to be connected to the output end of the motor through a coupling. Since the coupling, the end of the worm located outside the housing, and the output end of the motor are exposed to the air for a long time, they are prone to moisture and rust, and dust and other impurities are also easily attached to the surface of the above parts, causing the joints of the above parts to easily wear, affecting the transmission efficiency and stability of the reducer. Utility Model Content

[0003] The purpose of the present invention is to provide a worm gear reducer, aiming to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: the worm gear reducer includes a shell, and through holes are respectively provided on both sides of the lower end and the upper end of the shell, a main shaft is rotatably connected in the through holes on both sides of the lower end of the shell, a worm wheel is installed on the main shaft, and a worm is rotatably connected in the through holes on both sides of the upper end of the shell, and a connecting cylinder is provided on the outer surface of the shell, and a through groove for accommodating the connecting end of the worm is provided in the interior of the connecting cylinder, and grooves that are connected to the through grooves are evenly provided in the interior of the connecting cylinder, and an end cap that passes through the middle is also provided, and threaded holes are provided on the bottom of the groove, the end of the connecting cylinder away from the shell, and the end cap, and the connecting cylinder and the shell, as well as the connecting cylinder and the end cap are all connected by bolts.

[0005] Preferably, an observation hole is opened on one side of the connecting tube, and a plug cover is installed inside the observation hole.

[0006] Preferably, an annular boss is provided at one end of the connecting tube, and the boss can be placed in the through hole at the upper end of the shell.

[0007] Preferably, the worm is a double-lead worm.

[0008] The beneficial effects of the utility model are:

[0009] By providing a connecting tube and end cap, one end of the worm, the coupling and the output end of the motor can be protected and shielded to avoid long-term exposure of the above components to the air and reduce the occurrence of rust. In addition, by providing a groove, the mass of the connecting tube can be reduced and the internal surface area of ​​the connecting tube can be increased, which not only facilitates transportation but also increases the heat dissipation capacity of the connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0011] Figure 2 It is a cross-sectional view of the interior of the shell.

[0012] In the figure: 1. Housing; 2. Main shaft; 3. Worm gear; 4. Worm; 5. Connecting cylinder; 6. End cap; 7. Plug cover; 8. Boss. DETAILED DESCRIPTION

[0013] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0014] like Figure 1-2 As shown, a worm gear reducer includes a shell 1, and through holes are respectively opened on both sides of the lower end and the upper end of the shell 1. The main shaft 2 is rotatably connected in the through holes on both sides of the lower end of the shell 1, and a worm wheel 3 is installed on the main shaft 2. The worm 4 is rotatably connected in the through holes on both sides of the upper end of the shell 1, and a connecting cylinder 5 is provided on the outer surface of the shell 1. The interior of the connecting cylinder 5 is provided with a through groove for accommodating the connecting end of the worm 4. The interior of the connecting cylinder 5 is evenly provided with grooves that penetrate the through grooves, and also includes an end cap 6 that penetrates the middle part. Threaded holes are opened on the bottom of the groove, the end of the connecting cylinder 5 away from the shell 1, and the end cap 6. The connecting cylinder 5 and the shell 1, as well as the connecting cylinder 5 and the end cap 6, are all connected by bolts.

[0015] The connecting tube 5 is connected to the housing 1 by bolts, the end cap 6 is connected to the connecting tube 5 by bolts, and the end cap 6 is connected to the motor by bolts. Through the connection of the connecting tube 5 and the end cap 6, the coupling, the end of the worm 4 located outside the housing 1 and the output end of the motor can all be hidden in the connecting tube 5 and the housing 1 to avoid long-term exposure of the above-mentioned components to the air to reduce rust. At the same time, the grooves set up can reduce the mass of the connecting tube 5, which is convenient for moving and carrying the connecting tube 5. At the same time, the inner surface area of ​​the connecting tube 5 can be increased, and the local thickness of the inner wall of the connecting tube 5 can be reduced. Since the coupling will generate a certain amount of heat during use, by increasing the inner surface area of ​​the connecting tube 5 and thinning the local thickness of the inner wall of the connecting tube 5, the heat of the coupling can be easily dissipated through the connecting tube 5, which is beneficial to reduce the wear of the coupling, increase the service life of the coupling, and ensure the transmission efficiency and stability of the reducer and the motor.

[0016] The end cap 6 and the connecting tube 5 are separately arranged, which can reduce the difficulty of casting the end cap 6 and the connecting tube 5. When connecting the reducer to the motor, first connect the connecting tube 5 to the housing 1 of the reducer, and then connect the end cap 6 to the motor, and then connect the two worm gears 4 and the output end of the motor through the coupling. This connection method can reduce the obstruction of the end cap 6 on the interior of the connecting tube 5 and improve the convenience of installation.

[0017] The worm 4 includes a transmission part in the middle that cooperates with the worm wheel 3 and a stepped shaft at both ends of the transmission part. The connection between the transmission part and the stepped shaft is an inclined surface. Screws can be set at both ends of the transmission part. Screw holes can be opened on the stepped shafts at both ends of the transmission part. The transmission part and the stepped shaft are connected together through the screws and the screw holes. When one of the components is damaged, only the damaged component can be replaced to reduce losses. In addition, the two stepped shafts and the transmission part can be processed separately and simultaneously to improve processing efficiency.

[0018] Furthermore, an observation hole is opened on one side of the connecting tube 5, and a plug cover 7 is installed inside the observation hole. After opening the plug cover 7, when a component inside the connecting tube 5 fails, the situation inside the connecting tube 5 can be observed through the observation hole to make a preliminary judgment, thereby avoiding rashly opening the connecting tube 5 when there is no fault and the inside of the connecting tube 5 is not understood, which increases the workload.

[0019] Furthermore, an annular boss 8 is provided at one end of the connecting tube 5 , and the boss 8 can be placed in the through hole at the upper end of the shell 1 , so as to facilitate alignment of the connecting tube 5 with the shell 1 and improve the installation efficiency of the connecting tube 5 .

[0020] Furthermore, the worm 4 is a double-lead worm, which can reduce the matching clearance between the worm 4 and the worm wheel 3 and improve the matching stability between the worm wheel 3 and the worm 4.

[0021] By providing the connecting tube 5 and the end cap 6, one end of the worm 4, the coupling and the output end of the motor can be protected and shielded to avoid long-term exposure of the above components to the air and reduce the occurrence of rust. In addition, by providing the groove, the mass of the connecting tube 5 can be reduced and the internal surface area of ​​the connecting tube 5 can be increased, which not only facilitates transportation but also increases the heat dissipation capacity of the connecting tube 5.

[0022] In the description of this utility model, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

Claims

1. A worm gear reducer, characterized in that: The worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed on the main shaft; the worm gear is installed 2. The worm gear reducer according to claim 1, wherein: An observation hole is provided on one side of the connecting tube, and a plug cover is installed inside the observation hole.

3. The worm gear reducer according to claim 1, wherein: One end of the connecting tube is provided with an annular boss, and the boss can be placed in the through hole at the upper end of the shell.

4. The worm gear reducer according to any one of claims 1 to 3, characterized in that: The worm is a double-lead worm.

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