Worm and gear speed reducer with adjustable meshing clearance
By introducing a servo motor-driven ball screw into the worm gear reducer, the automatic adjustment of the meshing gap between the worm gear and the worm gear is achieved, solving the gap increase problem caused by wear, and improving the convenience and usability of the equipment.
Patent Information
- Application Number
- CN202420541050.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-20
AI Technical Summary
As the use time increases, wear may occur between the worm gear and the worm, resulting in an increase in the meshing gap and affecting the performance of the reducer.
A worm gear reducer including a main mechanism and an auxiliary mechanism is designed. The ball screw is driven by a servo motor to move the worm gear body downward until it is fully engaged with the worm gear body, so as to adjust the meshing gap. The auxiliary mechanism includes a gear reducer motor, worm gear body, ball nut, ball screw, rotating rod, servo motor and transmission shaft to ensure close engagement between the worm gear and worm.
It effectively improves the convenience and usability of the reducer, ensures close engagement between the worm gear and the worm, extends the service life of the equipment and reduces maintenance costs.
Smart Images
Figure CN222163408U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of worm gear reducers, in particular to a worm gear reducer with adjustable meshing clearance. Background Art
[0002] Worm gear reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger torque. In the current mechanism used to transmit power and motion, reducers are widely used.
[0003] The existing patent CN200996436Y worm gear reducer document proposes that the worm wheel [8] and worm [1] of the utility model are installed in the housing [6] through the bearing seat on the shaft, wherein the bearing seat [3, 4] on which the bearing [2] of the worm is installed is installed on a slide groove perpendicular to the worm wheel shaft, and a positioning bolt [5] is provided to position the bearing seat on the housing. The worm gear reducer provided by the utility model has a worm bearing seat that is not integrated with the housing but is on a groove perpendicular to the worm wheel shaft. It is a worm gear reducer with a non-fixed center distance, and the actual center distance of the worm wheel can be adjusted to the center distance after grinding to eliminate the meshing clearance between the worm wheel and the worm. The worm gear reducer provided by the utility model only modifies the structure of the housing bearing seat part, and does not need to add more parts as in the technical solution of adjusting the center distance structure of the worm wheel through the action of a wedge block, and has a low manufacturing cost and use cost.
[0004] However, although the existing patent CN200996436Y only modifies the structure of the housing bearing seat, it does not need to add more parts like the technical solution of adjusting the center distance structure of the worm gear through the action of a wedge block, and the manufacturing cost and use cost are low. However, as the device is used for a longer time, wear may occur between the worm gear and the worm, thereby causing an increase in the meshing clearance. Utility Model Content
[0005] The purpose of the utility model is to provide a worm gear reducer with adjustable meshing clearance, so as to solve the problem mentioned in the above background technology that as the device is used for a longer time, wear may occur between the worm wheel and the worm, thereby causing the meshing clearance to increase.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a worm gear reducer with adjustable meshing clearance, comprising a main mechanism and an auxiliary mechanism, wherein the auxiliary mechanism is located at the outer end of the main mechanism, the main mechanism comprises a protective shell, a base and a drive assembly, the base is fixedly mounted on the lower end of the protective shell, and the drive assembly is movably mounted inside the protective shell; the drive assembly comprises a reduction motor, a worm wheel body and a ball nut, the reduction motor is fixedly mounted on the inner end of the protective shell, the worm wheel body is movably mounted on the transmission end of the reduction motor, and the ball nut is fixedly mounted on the rear end of the reduction motor.
[0007] Preferably, the drive assembly also includes a ball screw, a rotating rod, a servo motor and a transmission shaft. The ball screw is movably mounted on the inner end of the ball nut. When the gap between the worm wheel body and the worm body becomes larger due to long-term engagement, the servo motor starts and drives the ball screw to rotate, causing the worm wheel body to move downward until it is fully engaged with the worm body, effectively improving the convenience of the reducer.
[0008] Preferably, the rotating rod is movably mounted on the lower end of the ball screw, and the servo motor is fixedly mounted on the lower end of the rotating rod. The reduction motor is started to drive the worm gear body to rotate, and the rotation of the worm gear body drives the transmission shaft to rotate.
[0009] Preferably, the servo motor is fixedly mounted at the lower end of the inner end of the protective shell, and the transmission shaft is movably mounted at the front end of the protective shell. The servo motor is installed to drive the worm gear body to move up and down.
[0010] Preferably, the auxiliary mechanism includes a worm body, a second transmission shaft and a heat dissipation window, the worm body is movably mounted on the right side of the protective shell, and the worm body is meshed with the worm wheel body.
[0011] Preferably, the second transmission shaft is movably installed on the right side of the protective shell, and the heat dissipation window is fixedly arranged at the front end of the protective shell. The reduction motor is started to drive the worm gear body to rotate, and the rotation of the worm gear body drives the first transmission shaft to rotate.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The worm gear reducer with adjustable meshing clearance, through the installation of the main mechanism, when the gap between the worm wheel body and the worm body becomes larger due to long-term meshing, the servo motor starts and drives the ball screw to rotate, so that the worm wheel body moves downward until it is fully meshed with the worm body, which effectively improves the convenience of the reducer;
[0014] 2. The worm gear reducer with adjustable meshing clearance, through the installation of auxiliary mechanism, the reduction motor is started, the worm gear body is driven to rotate, the rotation of the worm gear body drives the first transmission shaft to rotate, the rotation of the worm gear body drives the worm body and the second transmission shaft to rotate, which effectively improves the usability of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the partial cross-section structure of the utility model;
[0017] Figure 3 It is a schematic diagram of the partial cross-section structure of the utility model;
[0018] Figure 4 It is a schematic diagram of the partial cross-section structure of the utility model.
[0019] In the figure: 1. Main mechanism; 101. Protective shell; 102. Base; 103. Drive assembly; 1031. Reducer motor; 1032. Worm gear body; 1033. Ball nut; 1034. Ball screw; 1035. Rotating rod; 1036. Servo motor; 1037. Transmission shaft one; 2. Auxiliary mechanism; 201. Worm gear body; 202. Transmission shaft two; 203. Heat dissipation window. DETAILED DESCRIPTION
[0020] 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 in 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.
[0021] See also Figure 1-Figure 4The utility model provides a technical solution: a worm gear reducer with adjustable meshing clearance, comprising a main mechanism 1 and an auxiliary mechanism 2, the auxiliary mechanism 2 is located at the outer end of the main mechanism 1, the main mechanism 1 comprises a protective shell 101, a base 102 and a driving assembly 103, the base 102 is fixedly mounted at the lower end of the protective shell 101, and the driving assembly 103 is movably mounted inside the protective shell 101; the driving assembly 103 comprises a reduction motor 1031, a worm wheel body 1032 and a ball nut 1033, the reduction motor 1031 is fixedly mounted at the inner end of the protective shell 101, and the worm wheel body 1032 is movably mounted At the transmission end of the reduction motor 1031, the ball nut 1033 is fixedly installed at the rear end of the reduction motor 1031. The driving assembly 103 also includes a ball screw 1034, a rotating rod 1035, a servo motor 1036 and a transmission shaft 1037. The ball screw 1034 is movably installed on the inner end of the ball nut 1033, the rotating rod 1035 is movably installed on the lower end of the ball screw 1034, the servo motor 1036 is fixedly installed on the lower end of the rotating rod 1035, the servo motor 1036 is fixedly installed on the lower end of the inner end of the protective shell 101, and the transmission shaft 1037 is movably installed on the front end of the protective shell 101.
[0022] The auxiliary mechanism 2 includes a worm body 201, a second transmission shaft 202 and a heat dissipation window 203. The worm body 201 is movably mounted on the right side of the protective shell 101, the second transmission shaft 202 is movably mounted on the right side of the protective shell 101, and the heat dissipation window 203 is fixedly arranged at the front end of the protective shell 101. When using a worm gear reducer with adjustable meshing clearance, when the gap between the worm body 1032 and the worm body 201 becomes larger due to long-term meshing, the servo motor 1036 starts to drive the ball screw 1034 to rotate, so that the worm body 1032 moves downward until it is fully meshed with the worm body 201, and the reduction motor 1031 starts to drive the worm body 1032 to rotate, and the rotation of the worm body 1032 drives the second transmission shaft 202 to rotate, and the rotation of the worm body 1032 drives the worm body 201 and the second transmission shaft 202 to rotate.
[0023] Working principle: When using a worm gear reducer with adjustable meshing clearance, when the gap between the worm wheel body 1032 and the worm body 201 becomes larger due to long-term meshing, the servo motor 1036 starts to drive the ball screw 1034 to rotate, so that the worm wheel body 1032 moves downward until it is fully meshed with the worm body 201. The reduction motor 1031 starts to drive the worm wheel body 1032 to rotate. The rotation of the worm wheel body 1032 drives the transmission shaft 202 to rotate. The rotation of the worm wheel body 1032 drives the worm body 201 and the transmission shaft 202 to rotate.
[0024] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.
Claims
1. A worm gear reducer with adjustable meshing clearance, comprising a main mechanism (1) and an auxiliary mechanism (2), characterized in that: The auxiliary mechanism (2) is located at the outer end of the main mechanism (1); the main mechanism (1) comprises a protective shell (101), a base (102) and a drive assembly (103); the base (102) is fixedly mounted on the lower end of the protective shell (101), and the drive assembly (103) is movably mounted inside the protective shell (101); The driving assembly (103) comprises a reduction motor (1031), a worm wheel body (1032) and a ball nut (1033); the reduction motor (1031) is fixedly mounted on the inner end of the protective shell (101); the worm wheel body (1032) is movably mounted on the transmission end of the reduction motor (1031); and the ball nut (1033) is fixedly mounted on the rear end of the reduction motor (1031).
2. The worm gear reducer with adjustable meshing clearance according to claim 1, characterized in that: The driving assembly (103) further comprises a ball screw (1034), a rotating rod (1035), a servo motor (1036) and a transmission shaft (1037); the ball screw (1034) is movably mounted on the inner end of the ball nut (1033).
3. The worm gear reducer with adjustable meshing clearance according to claim 2, characterized in that: The rotating rod (1035) is movably mounted on the lower end of the ball screw (1034), and the servo motor (1036) is fixedly mounted on the lower end of the rotating rod (1035).
4. The worm gear reducer with adjustable meshing clearance according to claim 3, characterized in that: The servo motor (1036) is fixedly mounted at the lower end of the inner end of the protective shell (101), and the transmission shaft 1 (1037) is movably mounted at the front end of the protective shell (101).
5. The worm gear reducer with adjustable meshing clearance according to claim 4, characterized in that: The auxiliary mechanism (2) comprises a worm body (201), a second transmission shaft (202) and a heat dissipation window (203); the worm body (201) is movably mounted on the right side of the protective shell (101).
6. The worm gear reducer with adjustable meshing clearance according to claim 5, characterized in that: The second transmission shaft (202) is movably mounted on the right side of the protective shell (101), and the heat dissipation window (203) is fixedly arranged at the front end of the protective shell (101).