A coaxial hardened gear reducer

Abstract

The utility model discloses a coaxial hard-tooth surface reducer, which belongs to the technical field of coaxial reducers. The utility model comprises a driving motor, wherein a reduction gear set is arranged at the output end of the driving motor, the outer end of the driving motor is fixedly connected to a casing, the reduction gear set is located inside the casing, an inspection cover plate is connected to the top of the casing by bolts, a pressure regulating component is arranged at the top of the inspection cover plate, the pressure regulating component comprises a casing and a pressing plate, the pressing plate is slidably connected to the inner wall of the casing, a plurality of pressure relief holes equidistantly distributed in an annular shape are opened at the outer end of the casing, a connecting block is fixedly connected to the bottom end of the casing, a pressure regulating component is arranged on the inspection cover plate on the top of the casing, a telescopic spring is arranged inside the casing, a movable valve is fixed at the bottom end of the telescopic spring, when the pressure inside the casing is too large, the movable valve will be pushed upward, when the movable valve passes over the pressure relief hole, the pressure in the casing will be released through the pressure relief hole, so that the internal pressure can be adjusted by itself.

Description

Technical Field

[0001] The utility model relates to the technical field of coaxial reducers, and more specifically to a coaxial hard-tooth surface reducer. Background Art

[0002] The coaxial hardened gear reducer is a common reduction transmission device. Its main feature is that the input shaft and the output shaft are on the same straight line and on the same center line, forming a coaxial arrangement. This structure is relatively compact and occupies a small area. The hardened gear uses gears with hardened tooth surfaces that are precisely machined as reduction elements. Compared with ordinary gears, the hardened tooth surfaces have higher load-bearing capacity and service life.

[0003] The Chinese patent announcement number CN212536547U discloses a coaxial hard-tooth surface reducer, which controls the rotation of the motor by a control switch. The rotation of the motor drives the worm to rotate, the rotation of the worm drives the worm wheel to rotate, the rotation of the worm wheel drives the first bevel gear to rotate, the rotation of the first bevel gear drives the third bevel gear and two second bevel gears to rotate, the rotation of the third bevel gear drives the rotation of the shaft, the rotation of the shaft drives the rotation of three fan blades, and the rotation of the three fan blades blows the hot air inside the reduction box to the outside of the reduction box through the heat dissipation port. By arranging the above device, the utility model has a very strong heat dissipation performance.

[0004] When the reducer is running at high speed, the internal components will rub violently, and the friction will increase the internal temperature of the gearbox. Since the gearbox is sealed, the air inside will heat up and expand, increasing the internal pressure. The device in the above scheme cannot quickly relieve pressure. Excessive pressure will cause greater stress on the sealing ring and sealing material, which are prone to deformation or damage, resulting in leakage of lubricating oil.

[0005] Therefore, it is necessary to provide a coaxial hard-tooth surface reducer to solve the above problems. Utility Model Content

[0006] The utility model provides a coaxial hard-tooth surface reducer, which can improve the problem in the related art that when the reducer runs at high speed, friction will increase the internal temperature of the gear box, and excessive pressure in the gear box will cause the sealing ring and sealing material to be subjected to greater stress, which is easy to deform or damage.

[0007] An embodiment of the present application provides a coaxial hard-tooth surface reducer, including a drive motor, a reduction gear set is provided at the output end of the drive motor, the outer end of the drive motor is fixedly connected to a casing, the reduction gear set is located inside the casing, the top of the casing is connected to an inspection cover by bolts, the top of the inspection cover is provided with a pressure regulating assembly, the pressure regulating assembly includes a shell and a pressure plate, the pressure plate is slidably connected to the inner wall of the shell, a plurality of pressure relief holes equidistantly distributed in an annular shape are opened at the outer end of the shell, a connecting block is fixedly connected to the bottom end of the shell, and the shell is communicated with the inside of the connecting block.

[0008] The above-mentioned technical scheme in the embodiment of the present application has at least the following technical effects: a pressure regulating assembly is arranged on the inspection cover plate on the top of the casing, a telescopic spring is arranged inside the casing, and a movable valve is fixed at the bottom end of the telescopic spring. When the internal pressure of the casing is too large, the movable valve will be pushed upward. When the movable valve passes over the pressure relief hole, the pressure in the casing will be released through the pressure relief hole, so that it can adjust the internal pressure by itself, and can avoid problems such as sealing failure due to excessive pressure.

[0009] In some embodiments, a thread is disposed at the outer end of the connection block, the connection block is threadedly connected to the inspection cover plate, and the connection block is communicated with the interior of the casing.

[0010] In some embodiments, the pressure regulating assembly further comprises a sealing gasket, wherein the sealing gasket is made of a rubber material and is located between the housing and the inspection cover.

[0011] In some embodiments, a telescopic spring is disposed inside the shell, the top end of the telescopic spring is fixedly connected to the pressure plate, the bottom end of the telescopic spring is fixedly connected to a movable valve, and the movable valve is slidably connected to the inner wall of the shell.

[0012] In some embodiments, an abutment groove is provided at the connection between the shell and the connection block, and the abutment groove is adapted to the bottom end of the movable valve.

[0013] In some embodiments, a fixing block is fixedly connected to the top of the shell, a threaded rod is rotatably connected to the top of the pressure plate, the threaded rod is threadedly connected to the fixing block, and a knob is fixedly connected to the top of the threaded rod.

[0014] In some embodiments, the reduction gear group includes an output worm gear, which is fixedly connected to the output end of the drive motor, the outer end of the output worm gear is meshed with a first-stage reduction worm gear, the outer end of the first-stage reduction worm gear is meshed with a second-stage reduction worm gear, the outer end of the second-stage reduction worm gear is meshed with a third-stage reduction worm gear, and the outer end of the third-stage reduction worm gear is fixedly connected to the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the partial explosion structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the pressure regulating assembly of the utility model;

[0019] Figure 4 This is a schematic diagram of the explosion structure of the pressure regulating component of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the reduction gear set of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Drive motor;

[0023] 2. Casing;

[0024] 3. Inspection cover;

[0025] 4. Pressure regulating assembly; 41. Housing; 42. Fixing block; 43. Pressure relief hole; 44. Connecting block; 45. Threaded rod; 46. Knob; 47. Pressing plate; 48. Sealing gasket; 49. Movable valve; 410. Telescopic spring; 411. Abutment groove;

[0026] 5. Reduction gear set; 51. Output worm gear; 52. Primary reduction worm gear; 53. Secondary reduction worm gear; 54. Third reduction worm gear; 55. Output shaft. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] When the reducer runs at high speed, the internal reduction gear set and bearings will rub violently. Since the gearbox is sealed, the internal temperature rises, which will cause thermal expansion of the lubricating oil, air, etc., thereby increasing the internal pressure.

[0035] Excessive pressure will cause greater stress on the sealing ring and sealing materials. Excessive pressure will also hinder the flow of lubricating oil, resulting in insufficient lubrication of gears and bearings, and the sealing ring and sealing materials are prone to deformation or damage.

[0036] Based on this, the problem in the related technology that when the reducer runs at high speed, friction will cause the internal temperature of the gearbox to rise, and excessive pressure in the gearbox will cause the sealing ring and sealing material to be subjected to greater stress, making them prone to deformation or damage can be improved.

[0037] See also Figure 1-Figure 5 A coaxial hard-tooth surface reducer comprises a driving motor 1, a reduction gear set 5 is arranged at the output end of the driving motor 1, the outer end of the driving motor 1 is fixedly connected to a casing 2, the reduction gear set 5 is located inside the casing 2, an inspection cover 3 is connected to the top of the casing 2 by bolts, a pressure regulating assembly 4 is arranged at the top of the inspection cover 3, the pressure regulating assembly 4 comprises a casing 41 and a pressure plate 47, the pressure plate 47 is slidably connected to the inner side wall of the casing 41, a plurality of pressure relief holes 43 equidistantly distributed in an annular shape are opened at the outer end of the casing 41, a connecting block 44 is fixedly connected to the bottom end of the casing 41, and the casing 41 is communicated with the inside of the connecting block 44.

[0038] In this solution, the driving motor 1 is a power output source, and a reduction gear set 5 is installed at the output end of the driving motor 1. The reduction gear set 5 reduces the speed of the output power of the driving motor 1 and increases the torque through multi-stage worm gear reduction. A housing 2 is installed on the outer surrounding of the reduction gear set 5. The top of the housing 2 is connected with an inspection cover 3 by bolts. The inspection cover 3 is detachably connected. A pressure regulating component 4 is installed on the top of the inspection cover 3. The pressure regulating component 4 is mainly used for automatic pressure relief. A movable valve 49 is fixed at the bottom end of the telescopic spring 410 inside the housing 41. A housing 41 is provided on the outer surrounding of the housing 41. There are multiple pressure relief holes 43, which are mainly used for pressure relief. When the internal pressure of the casing 2 is too high, the movable valve 49 will be pushed upward. When the movable valve 49 passes over the pressure relief hole 43, the casing 2 will be connected with the outside through the pressure relief hole 43, so that the pressure in the casing 2 will be released through the pressure relief hole 43, so that it can adjust the internal pressure by itself, and can avoid sealing failure due to excessive pressure. At the same time, through pressure relief, the load pressure of key components such as gears and bearings can be reduced, the workload of daily inspection and maintenance can be reduced, the work intensity of maintenance personnel can be reduced, and the maintainability of the equipment is improved.

[0039] Optionally, in some embodiments, see Figure 2-Figure 4 The outer end of the connecting block 44 is provided with a thread, the connecting block 44 is threadedly connected to the inspection cover 3, and the connecting block 44 is connected to the inside of the casing 2.

[0040] The pressure regulating assembly 4 further includes a sealing gasket 48 , which is made of rubber material and is located between the housing 41 and the inspection cover 3 .

[0041] A telescopic spring 410 is disposed inside the shell 41 . The top end of the telescopic spring 410 is fixedly connected to the pressure plate 47 . The bottom end of the telescopic spring 410 is fixedly connected to a movable valve 49 . The movable valve 49 is slidably connected to the inner wall of the shell 41 .

[0042] An abutment groove 411 is provided at the connection between the housing 41 and the connection block 44 , and the abutment groove 411 is matched with the bottom end of the movable valve 49 .

[0043] A fixing block 42 is fixedly connected to the top of the housing 41 , a threaded rod 45 is rotatably connected to the top of the pressure plate 47 , the threaded rod 45 is threadedly connected to the fixing block 42 , and a knob 46 is fixedly connected to the top of the threaded rod 45 .

[0044] A pressure plate 47 is fixed to the top of the telescopic spring 410, and the movable valve 49 and the pressure plate 47 are both slidably connected to the inner wall of the shell 41. A threaded rod 45 is rotatably connected to the top of the pressure plate 47. The threaded rod 45 is threadedly connected to the fixed block 42 and penetrates the fixed block 42. A knob 46 is fixed to the top of the threaded rod 45. When the knob 46 is turned, the threaded rod 45 can be rotated. At this time, the threaded rod 45 will drive the pressure plate 47 to move up and down. When the pressure plate 47 moves downward, it will compress the telescopic spring 410, thereby increasing the pressure when the movable valve 49 moves upward, thereby achieving the purpose of adjusting the pressure release threshold and improving adjustability.

[0045] An abutment groove 411 is provided at the connection between the shell 41 and the connecting block 44. When the movable valve 49 is in a stationary state, the bottom of the movable valve 49 will abut against the abutment groove 411, thereby increasing its sealing performance. A sealing gasket 48 is sleeved on the outer end of the connecting block 44. When the connecting block 44 is threadedly connected to the inspection cover 3, the sealing gasket 48 will be located between the shell 41 and the inspection cover 3, thereby increasing the sealing performance between the connecting block 44 and the inspection cover 3.

[0046] Optionally, in some embodiments, see Figure 5 The reduction gear set 5 includes an output worm gear 51, which is fixedly connected to the output end of the driving motor 1. The outer end of the output worm gear 51 is meshedly connected with a first-stage reduction worm gear 52, the outer end of the first-stage reduction worm gear 52 is meshedly connected with a second-stage reduction worm gear 53, the outer end of the second-stage reduction worm gear 53 is meshedly connected with a third-stage reduction worm gear 54, and the outer end of the third-stage reduction worm gear 54 is fixedly connected with an output shaft 55.

[0047] In this scheme, the reduction gear set 5 is mainly used to reduce the speed of the driving motor 1 and increase the torque. It is a three-stage reduction method. The output worm gear 51 is installed at the output end of the driving motor 1, and then the first-stage reduction worm gear 52, the second-stage reduction worm gear 53 and the third-stage reduction worm gear 54 are installed in sequence. The first-stage reduction worm gear 52 and the second-stage reduction worm gear 53 are connected with a worm. The first-stage reduction worm gear 52, the second-stage reduction worm gear 53 and the third-stage reduction worm gear 54 are meshed and connected in sequence through the worm, thereby forming a three-stage reduction. An output shaft 55 is fixed at the outer end of the third-stage reduction worm gear 54. The output shaft 55 is coaxially arranged with the output worm gear 51. The output shaft 55 can output the power of the driving motor 1 after deceleration.

[0048] Working principle: When the drive motor 1 is running, since the output end of the drive motor 1 is equipped with a reduction gear set 5, the power of the drive motor 1 will be output after being decelerated by the reduction gear set 5. The first-stage reduction worm gear 52, the second-stage reduction worm gear 53 and the third-stage reduction worm gear 54 are all meshed and connected in sequence through worms to form a three-stage reduction. An output shaft 55 is fixed to the outer end of the third-stage reduction worm gear 54, which can output the power of the drive motor 1 after being decelerated. A pressure regulating component 4 is installed on the top of the inspection cover 3, and a movable valve 49 is fixed to the bottom end of the telescopic spring 410. When the internal pressure of the casing 2 is too large, the movable valve 49 will be pushed upward. When the movable valve 49 passes over the pressure relief hole 43, the casing 2 will be connected to the outside to release the pressure, thereby avoiding sealing failure due to excessive pressure. When the knob 46 is turned, the pressure plate 47 can be moved up and down. When the pressure plate 47 moves downward, the telescopic spring 410 will be compressed, thereby increasing the pressure when the movable valve 49 moves upward, thereby achieving the purpose of adjusting the pressure release threshold.

[0049] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A coaxial hardened gear reducer, comprising a drive motor (1), characterized in that: The output end of the drive motor (1) is provided with a reduction gear set (5); the outer end of the drive motor (1) is fixedly connected to the housing (2); the reduction gear set (5) is located inside the housing (2); the top of the housing (2) is connected with an inspection cover (3) by bolts; the top of the inspection cover (3) is provided with a pressure regulating assembly (4); The pressure regulating assembly (4) comprises a shell (41) and a pressure plate (47), wherein the pressure plate (47) is slidably connected to the inner wall of the shell (41), a plurality of pressure relief holes (43) equidistantly distributed in an annular shape are provided at the outer end of the shell (41), a connecting block (44) is fixedly connected to the bottom end of the shell (41), and the shell (41) is internally connected to the connecting block (44).

2. A coaxial hardened gear reducer according to claim 1, characterized in that: The outer end of the connection block (44) is provided with a thread, the connection block (44) is threadedly connected to the inspection cover plate (3), and the connection block (44) is connected to the inside of the casing (2).

3. A coaxial hardened gear reducer according to claim 1, characterized in that: The pressure regulating assembly (4) further comprises a sealing gasket (48), wherein the sealing gasket (48) is made of a rubber material and is located between the housing (41) and the inspection cover (3).

4. The coaxial hardened gear reducer according to claim 1, characterized in that: A telescopic spring (410) is arranged inside the shell (41), the top end of the telescopic spring (410) is fixedly connected to the pressure plate (47), the bottom end of the telescopic spring (410) is fixedly connected to a movable valve (49), and the movable valve (49) is slidably connected to the inner wall of the shell (41).

5. A coaxial hardened gear reducer according to claim 4, characterized in that: An abutment groove (411) is provided at the connection between the housing (41) and the connection block (44), and the abutment groove (411) is adapted to the bottom end of the movable valve (49).

6. The coaxial hardened gear reducer according to claim 1, characterized in that: The top of the housing (41) is fixedly connected to a fixing block (42), the top of the pressure plate (47) is rotatably connected to a threaded rod (45), the threaded rod (45) is threadedly connected to the fixing block (42), and the top of the threaded rod (45) is fixedly connected to a knob (46).

7. The coaxial hardened gear reducer according to claim 1, characterized in that: The reduction gear set (5) comprises an output worm gear (51), the output worm gear (51) is fixedly connected to the output end of the drive motor (1), the outer end of the output worm gear (51) is meshedly connected to a primary reduction worm gear (52), the outer end of the primary reduction worm gear (52) is meshedly connected to a secondary reduction worm gear (53), the outer end of the secondary reduction worm gear (53) is meshedly connected to a tertiary reduction worm gear (54), and the outer end of the tertiary reduction worm gear (54) is fixedly connected to an output shaft (55).

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