Spiral bevel gear motor reduction gearbox

Abstract

A spiral bevel gear on a motor shaft is meshed with a driven bevel gear, a straight gear coaxial with the driven bevel gear is meshed with a large straight gear for speed reduction transmission, and a small straight gear coaxial with the large straight gear is meshed with an output straight gear for speed reduction transmission. The utility model has the characteristics of compact structure, low rotating speed, large torque output, stable operation, large bearing capacity, long service life and the like.

Description

Technical Field

[0001] The utility model relates to a gear reduction device, in particular to a spiral bevel gear motor reduction box Background Art

[0002] From the perspective of disease treatment, different diseases correspond to different prescriptions, and the same prescription is made up of a mixture of multiple Chinese medicinal materials, and there are strict requirements on the proportion of each Chinese medicinal material. In existing Chinese medicine pharmacies, doctors refer to the prescription, grab and weigh each Chinese medicinal material in the medicine cabinet, and deliver it to the patient after packaging. There are disadvantages such as high workload for doctors, difficulty in ensuring accurate measurement, and frequent shortages of medicines, wrong medicines, and insufficient medicines.

[0003] In view of the existing problems of manual medicine picking of traditional Chinese medicine, the utility model has developed the "Smart Chinese Medicine Pharmacy Chinese Medicine Piece Intelligent Dispensing and Dispensing System". From the perspective of disease treatment, different diseases correspond to different prescriptions, and the same prescription is made up of a mixture of multiple Chinese medicines, and there are strict requirements for the proportion of each Chinese medicine. In existing Chinese medicine pharmacies, doctors refer to the prescription, grab and weigh each Chinese medicine in the medicine cabinet, and deliver it to the patient after packaging. There are disadvantages such as high workload for doctors, difficulty in ensuring accurate measurement, and frequent shortages, wrong medicines, and insufficient medicines.

[0004] In response to the problems existing in the manual preparation of Chinese medicinal materials, the aim is to realize the intelligence of the entire process of Chinese medicine prescription dispensing in Chinese pharmacies, from prescription reception, prescription review, prescription decomposition, prescription distribution, to automatic preparation of medicinal materials, automatic retrieval of collected medicinal materials, and then to replenishment of missing medicinal materials, inspection of medicinal materials, packaging of medicinal materials, and distribution of packaged medicinal materials.

[0005] The intelligent Chinese medicine cabinet subsystem in this system is composed of several intelligent Chinese medicine cabinets equipped with different stirring devices, different medicine dispensing devices, metering flipping devices and metering correction devices. In order to meet the installation and use requirements of the motor drive equipment of the intelligent Chinese medicine cabinet, it is particularly necessary to develop a motor reduction device with low speed, large torque output, compact structure and small space occupancy. Utility Model Content

[0006] The utility model aims to provide a spiral bevel gear motor reduction box with low rotation speed, large torque output, stable operation and strong load-bearing capacity.

[0007] The purpose of the utility model is achieved as follows: a spiral bevel gear motor reduction box, the box body is composed of a box cover and a shell, the shell is composed of a rear side vertical plate, a left side vertical plate, a right side vertical plate and a top plate and a bottom plate; the motor is installed on the outer surface of the bottom plate, the spiral bevel gear is installed on the motor shaft, and the step of the spiral bevel gear, that is, the cylindrical outer convex part, is fixed to the first bearing inner ring fixed on the circular inner concave surface of the bottom plate, the part above the step of the spiral bevel gear is located in the inner cavity of the shell, the double spiral bevel gear is composed of a driven spiral bevel gear and a spur gear installed on the first optical axis, the first optical axis is movably mounted or mounted on the convex sealing cylinder of the front side vertical plate and the rear side vertical plate through a bearing, and the double gear is installed by a large spur gear and a small spur gear The second optical axis is composed of a second optical axis, which is located above the first optical axis and is movably mounted or mounted on the outer convex sealing cylinder of the front side plate and the rear side plate through a bearing. A sleeve is movably mounted on the second optical axis, and the front end of the sleeve movably abuts against the rear end face of the large spur gear of the duplex gear, and the rear end of the sleeve movably abuts against the inner wall of the rear side plate. The output shaft located above the second optical axis is mounted on the second bearing and the third bearing, and the second bearing and the third bearing are respectively installed in the outer convex sealing cylinder of the rear side plate and the front side plate. The driven spiral bevel gear meshes with the spiral bevel gear for transmission, the spur gear meshes with the large spur gear of the duplex gear for reduction transmission, and the small spur gear of the duplex gear meshes with the output spur gear installed on the output shaft for reduction transmission.

[0008] The first optical axis, the second optical axis and the output axis are parallel to each other.

[0009] A retaining spring is installed on the output shaft at the outer end of the second bearing; and a gasket is arranged at the lower part of the first bearing.

[0010] The box cover is fixed on the front opening of the shell body via bolts.

[0011] The inner cavity of the box body is filled with lubricating oil or lubricating grease.

[0012] The double spiral bevel gear is composed of a step of a spur gear, i.e. a cylinder extending downward, which is inserted into the middle hole of a driven spiral bevel gear with an interference fit; the double gear is composed of a step of a small spur gear, i.e. a cylinder extending downward, which is inserted into the middle hole of a large spur gear with an interference fit.

[0013] The beneficial effects of the utility model are:

[0014] 1. High transmission efficiency: The tooth surface contact line of the spiral bevel gear is a spiral line. Compared with straight teeth or helical teeth, its contact area is larger, and as the gear rotates, the contact point gradually moves along the tooth surface, making the transmission smoother and more efficient.

[0015] 2. Low noise: High-precision processing, ingenious structural design and reasonable lubrication make the speed reducer extremely low noise during the transmission process, improving the overall performance of the equipment. At the same time, the meshing process of the spiral bevel gear is smooth, reducing the impact and vibration of the tooth surface, thereby reducing noise.

[0016] 3. Strong load-bearing capacity: The tooth surface of spiral bevel gears has been specially treated, such as carburizing and quenching hardening, to improve the hardness and wear resistance of the tooth surface. In addition, its large contact area and progressive meshing method also enhance the load-bearing capacity of the gear, enabling it to withstand higher torque and impact, and is suitable for high-speed and heavy-load conditions.

[0017] 4. Long service life: Since spiral bevel gears have excellent wear resistance and load-bearing capacity, and the impact and vibration during transmission are small, their service life is relatively long.

[0018] 5. Strong adaptability: Compared with the worm gear reducer, the spiral bevel gear reducer has an additional reduction mechanism, which can achieve a wider range of transmission reduction ratios. At the same time, its installation and commissioning are relatively flexible and can adapt to the installation and use requirements of different equipment.

[0019] 6. Easy maintenance: The overall design of the reducer is ingenious and the structure is simple, with few types of parts, low maintenance cost, and simple and quick maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Figure 2 Figure 3 Figure 4 They are respectively a right view, a front view, a top view and a stereoscopic view of the motor reduction box of the utility model.

[0021] Figure 5 yes Figure 1 main view.

[0022] Figure 6 yes Figure 5 Section view along line AA.

[0023] Figure 7 yes Figure 4 A three-dimensional view of a partially cut-away portion of the housing is shown.

[0024] Figure 8 yes Figure 4 Shown is a rear view of the reduction gearbox with the motor removed.

[0025] Fig. 9 Fig.10 They are Figure 8 Section views along line FF and along line DD.

[0026] Fig.11 Fig.12 They are Figure 8 Top view and perspective view.

[0027] Fig.13 yes Fig.11 Exploded view of the reduction gearbox from the front.

[0028] Fig.14 yes Fig.13 Enlarged view of part A.

[0029] Fig.15 yes Fig.11 3D exploded view of the reduction gearbox.

[0030] Fig.16a Fig.16b Fig.16c The following are schematic diagrams of the assembly process of the spur gear and the driven spiral bevel gear.

[0031] Fig.16 This is a three-dimensional view of the assembled double spiral bevel gear.

[0032] Fig.17a Fig.17b Fig.17c The following are schematic diagrams of the assembly process of the small spur gear and the large spur gear.

[0033] Fig.17 It is a three-dimensional view of the assembled double gear. DETAILED DESCRIPTION

[0034] Figure 7 In the embodiment, the retaining spring 8 is arranged on the output shaft at the right end of the second bearing 9.

[0035] Fig. 9 Fig.10 Fig.15A spiral bevel gear motor reduction box is shown, the box body is composed of a box cover 3 and a shell 7, the shell is composed of a rear side vertical plate, a left side vertical plate, a right side vertical plate and a top plate as an integrated body as a bottom plate; the motor 1 is installed on the outer surface of the bottom plate, the spiral bevel gear 11 is installed on the motor shaft, and the step of the spiral bevel gear, that is, the cylindrical outer convex part, is fixed to the inner ring of the first bearing 12 fixed on the circular inner concave surface of the bottom plate (the outer ring of the first bearing is fixed on the bottom plate), the part above the step of the spiral bevel gear is located in the inner cavity of the shell, the double spiral bevel gear 2 is composed of a driven spiral bevel gear 2b and a spur gear 2a installed on the first optical axis 10, the first optical axis is movably mounted or mounted on the convex sealing cylinder of the front side vertical plate and the rear side vertical plate through a bearing, and the double gear 4 is composed of a large spur gear and a small spur gear. It is installed on the second optical axis 10a. The second optical axis located above the first optical axis is movably mounted or mounted on the convex sealing cylinder of the front side plate and the rear side plate through a bearing. A sleeve 13 is movably mounted on the second optical axis. The front end of the sleeve movably abuts against the rear end face of the large spur gear of the duplex gear, and the rear end of the sleeve movably abuts against the inner wall of the rear side plate. The output shaft 5 located above the second optical axis is mounted on the second bearing 9 and the third bearing 9a. The second bearing and the third bearing are respectively mounted in the convex sealing cylinder of the rear side plate and the front side plate. The driven spiral bevel gear is meshed with the spiral bevel gear for transmission, the spur gear 2a is meshed with the large spur gear of the duplex gear for reduction transmission, and the small spur gear of the duplex gear is meshed with the output spur gear 6 installed on the output shaft 5 for reduction transmission.

[0036] The first optical axis, the second optical axis and the output axis are parallel to each other.

[0037] A retaining spring 8 is installed on the output shaft at the outer end of the second bearing; a gasket 14 is provided at the lower part of the first bearing 12. Figure 7 )

[0038] The box cover 3 is fixed to the front opening of the housing via bolts.

[0039] The inner cavity of the box body is filled with lubricating oil or lubricating grease.

[0040] The double spiral bevel gear is composed of a step of the spur gear 2a, i.e. a cylindrical body extending downward, which is inserted into the center hole of the driven spiral bevel gear 2b with an interference fit; the double gear is composed of a step of the small spur gear 4a, i.e. a cylindrical body extending downward, which is inserted into the center hole of the large spur gear 4b with an interference fit.

[0041] The first bearing cooperates with the spiral bevel gear to make the motor transmission stable and the load-bearing capacity greater.

[0042] composition:

[0043] 1. The spiral bevel gear motor reducer consists of a reducer housing, a reducer cover, a spiral bevel gear bearing, a reducer output shaft bearing, a spiral bevel gear, a double spiral bevel gear, a double gear, a spur gear, a reducer output shaft, a smooth shaft, a bushing, a retaining ring and other components.

[0044] 2. Each component and its function:

[0045] ⑴. Gearbox housing: As the main structure of the entire gearbox, the gearbox housing protects the internal transmission mechanism from the influence of the external environment and ensures the accurate relative position between the components. It provides a solid and sealed working environment for its internal gears, protects the transmission components from dust, moisture and other impurities, and improves the overall rigidity and stability of the gearbox.

[0046] ⑵. Gearbox cover: It is used to seal the gearbox housing and together with the housing form a sealed working environment to protect the internal transmission mechanism of the motor gearbox from the influence of the external environment and facilitate maintenance and repair.

[0047] ⑶. Bearings: Bearings include spiral bevel gear bearings and reduction box output shaft bearings. They support transmission components and reduce friction and wear between them. They also greatly improve the operating accuracy and reliability of the transmission system and extend the service life of transmission components.

[0048] ⑷. Spiral bevel gear: The spiral bevel gear and the double spiral bevel gear work together to achieve 90° power transmission. The spiral bevel gear adopts a spiral tooth structure to improve transmission efficiency, reduce noise and vibration, and enhance load-bearing capacity and service life. Its spiral tooth shape helps to form a progressive meshing process, making the transmission smoother.

[0049] ⑸. Double spiral bevel gear: Double spiral bevel gear and spiral bevel gear work together to achieve 90° power transmission. The spiral bevel gear part of the double spiral bevel gear adopts a spiral tooth structure, which improves the transmission efficiency, reduces noise and vibration, and enhances its load-bearing capacity and service life. The spur tooth part of the double spiral bevel gear can form a certain reduction ratio with the spiral tooth according to the design, so as to achieve power deceleration and transmission.

[0050] Features: The double spiral bevel gear is the key transmission component in this reduction gearbox. The inlaid double spiral bevel gear developed independently by us is a unique gear suitable for related products of our company. It is composed of a spur gear directly combined with a spiral bevel gear by inlaying. Its characteristics are that it avoids the influence of welding deformation on gear accuracy and avoids the influence of welding scar on roughness.

[0051] ⑹. Double gear: Double gear consists of a large spur gear and a small spur gear overlapped and combined in an inlaid way. In the reduction gearbox, the large gear meshes with the spur gear on the double spiral bevel gear, while the small gear meshes with the spur gear on the other side, completing the power transmission while also achieving the effect of speed reduction.

[0052] ⑺. Spur gear: The spur gear is installed and fixed on the output shaft of the reduction gearbox. The spur gear meshes with the pinion of the duplex gear, accepts the transmission of the duplex gear, realizes a specific transmission ratio, and drives the output shaft of the reduction gearbox to rotate.

[0053] ⑻. Gearbox output shaft: It transmits the rotational torque of the internal transmission components of the gearbox to the external force-bearing mechanism and is the connecting bridge between the motor gearbox and the external force-bearing mechanism.

[0054] ⑼. Optical axis: As a supporting component in the transmission mechanism, it is used to install and support other transmission components. It ensures the relative position between the transmission components is accurate and improves the stability and reliability of the transmission system. At the same time, due to its smooth surface, the friction of each transmission component is reduced to an extremely low range.

[0055] ⑽. Bushing: Installed under the gear on the optical axis, used to support the transmission parts and adjust the height of the transmission parts.

[0056] ⑾. Circlip: used to fix the position of the transmission parts on the shaft to prevent them from loosening or falling off. Ensure the relative position between the transmission parts is accurate and stable, and improve the safety and reliability of the transmission system.

[0057] Working principle and process:

[0058] 1. Working principle:

[0059] The spiral bevel gear motor reducer converts the high-speed and low-torque output of the motor into a low-speed and high-torque output through the internal gear transmission mechanism. This conversion process is completed by the spiral bevel gear and the double spiral bevel gear in cooperation with other spur gears. The motor rotates to drive the spiral bevel gear to rotate. The spiral bevel gear drives the double spiral bevel gear to rotate by driving the spiral bevel tooth part of the double spiral bevel gear meshing with it, thereby realizing the 90° power transmission between the motor output shaft and the gear shaft of the reduction box. The spur tooth part of the double spiral bevel gear meshes with the large spur tooth of the double gear, thereby driving the double gear to rotate. The small spur tooth of the double gear meshes with the spur tooth on the output shaft of the reduction box, thereby driving the spur tooth and the output shaft of the reduction box to rotate, thus realizing the function of transmitting the motor power to the external force-bearing structure.

[0060] 2. Working process:

[0061] ① Power input: The motor output shaft is connected to the spiral bevel gear, and the motor rotation drives the spiral bevel gear rotation. The power of the motor is transmitted to the spiral bevel gear through the motor output shaft.

[0062] ② Gear meshing: The spiral bevel gear connected to the motor output shaft starts to rotate, and the spiral bevel gear drives the double spiral bevel gear to rotate by driving the spiral bevel gear part of the double spiral bevel gear meshing with it, thereby realizing 90° power transmission between the motor output shaft and the gear shaft of the reduction box. Because the parameters of the spiral bevel gear and the bevel gear on the double spiral bevel gear are the same, this process only causes 90° power transmission without changing its speed. And because the tooth surface of the spiral bevel gear is in the shape of a spiral line, the meshing process is smooth, efficient and low-noise.

[0063] ③Power transmission and deceleration: The spur gear part of the double spiral bevel gear can form a certain reduction ratio with the spiral gear according to the design, so as to achieve power deceleration and transmission;

[0064] The spur teeth of the double spiral bevel gear mesh with the large spur teeth of the double gear. Since the number of teeth of the spur teeth of the double spiral bevel gear is less than the number of teeth of the large spur teeth of the double gear, a larger reduction ratio and power transmission are achieved; the small spur teeth of the double gear mesh with the spur teeth on the output shaft of the reduction box. Since the number of teeth of the small spur teeth of the double gear is less than the number of teeth of the spur teeth, a larger reduction ratio and power transmission are achieved again. Through multiple decelerations, the output speed of the reduction box will be greatly reduced, but the output torque will be greatly increased, thereby achieving the effect of the reduction box reducing the motor speed and increasing the output torque.

[0065] ④ Output power: The motor power after deceleration and force amplification is transmitted to the external force-bearing mechanism through the output shaft of the reduction gearbox to drive it to work.

[0066] ⑤ Lubrication and heat dissipation: During the operation of the reduction gearbox, the lubricating oil fully covers all lubrication points to ensure that the gears and bearings are fully lubricated and reduce friction and wear. At the same time, the lubricating oil inside the reduction gearbox also has the function of high temperature resistance to ensure the stability and reliability of the equipment under long-term high-load operation.

Claims

1. A spiral bevel gear motor reduction box, characterized in that: The box body is composed of a box cover (3) and a shell (7), and the shell is composed of a rear side vertical plate, a left side vertical plate, a right side vertical plate, a top plate and a bottom plate as an integrated whole; the motor (1) is mounted on the outer surface of the bottom plate, the spiral bevel gear (11) is mounted on the motor shaft, and the step of the spiral bevel gear, i.e., the cylindrical outer convex part, is fixed to the inner ring of the first bearing (12) fixed on the circular inner concave surface of the bottom plate, and the part above the step of the spiral bevel gear is located in the inner cavity of the shell, the double spiral bevel gear (2) is composed of a driven spiral bevel gear (2b) and a spur gear (2a) and is mounted on the first optical axis (10), and the first optical axis is movably mounted or mounted on the outer convex sealing cylinder of the box cover and the rear side vertical plate through a bearing, and the double gear (4) is composed of a large spur gear and a small spur gear and is mounted on the second optical axis (1 0a), a second optical axis located above the first optical axis is movably mounted or mounted on the outer convex sealing cylinder of the box cover and the rear side vertical plate via a bearing, a shaft sleeve (13) is movably mounted on the second optical axis, the front end of the shaft sleeve movably abuts against the rear end surface of the large spur gear of the double gear, and the rear end of the shaft sleeve movably abuts against the inner wall of the rear side vertical plate, an output shaft (5) located above the second optical axis is mounted on the second bearing (9) and the third bearing (9a), the second bearing and the third bearing are respectively mounted in the outer convex sealing cylinder of the rear side vertical plate and the box cover, the driven spiral bevel gear meshes with the spiral bevel gear for transmission, the spur gear (2a) meshes with the large spur gear of the double gear for speed reduction transmission, and the small spur gear of the double gear meshes with the output spur gear (6) mounted on the output shaft (5) for speed reduction transmission.

2. A spiral bevel gear motor reduction box according to claim 1, characterized in that: The first optical axis, the second optical axis and the output shaft are parallel to each other; another shaft sleeve (13a) for limiting the position of the double spiral bevel gear is movably sleeved between the front part of the double spiral bevel gear on the first optical axis and the box cover.

3. A spiral bevel gear motor reduction box according to claim 2, characterized in that: A retaining spring (8) is installed on the output shaft at the outer end of the second bearing; and a gasket (14) is arranged at the lower part of the first bearing (12).

4. A spiral bevel gear motor reduction box according to claim 3, characterized in that: The box cover (3) is fixed on the front opening of the shell body via bolts.

5. A spiral bevel gear motor reduction box according to claim 4, characterized in that: The inner cavity of the box body is filled with lubricating oil or lubricating grease.

6. A spiral bevel gear motor reduction box according to claim 5, characterized in that: The double spiral bevel gear is composed of a step of a spur gear (2a), i.e. a cylindrical body extending downward, which is inserted into the middle hole of a driven spiral bevel gear (2b) with an interference fit; and the double gear is composed of a step of a small spur gear (4a), i.e. a cylindrical body extending downward, which is inserted into the middle hole of a large spur gear (4b) with an interference fit.

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