Speed reducer with anti-radial force double support output structure

Abstract

The utility model discloses a kind of reducer of radial force double support output structure, including reducer body, the bottom of reducer body is fixedly connected with base, the front end center of reducer body is equipped with opening, and opening place protrudes with the shaft lever that can rotate, the front of reducer body is equipped with output mechanism, output mechanism includes box, and the front end of reducer body is fixedly connected with the rear end of box;By setting two groups of herringbone gear structure, since the axial force and radial force of bearing exist mechanical coupling relationship, therefore herringbone gear can indirectly affect the balance of radial force through its symmetric design, the axial force generated by its double helix structure can be mutually cancelled out, to reduce the axial load of bearing, the balance of this axial force indirectly reduces the stress pressure of radial bearing, to reach the effect of resisting radial force, not only further improve the service life of reducer, while also improve the stability of bearing overall structure.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and in particular to a speed reducer with a dual-support output structure that resists radial force. Background Technology

[0002] A speed reducer is an independent component consisting of gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine, and plays a role in matching speed and transmitting torque between the prime mover and the working machine or actuator. It is widely used in modern machinery.

[0003] When tapered roller bearings are used to fix and support the output gear shaft, this structure limits the radial force load that the output gear shaft can withstand. Over time, this can easily lead to significant wear on the tapered roller bearings. During the operation of the reducer, the high temperature of the tapered roller bearings can easily cause oil seal deformation, greatly increasing the risk of oil leakage. Based on these problems, Chinese patent CN222650485U discloses a simply supported beam double-support structure reducer, which replaces tapered roller bearings with self-aligning bearings, thus reducing costs. The output gear shaft is made into a semi-enclosed state through the housing arm and the main housing, which can play a certain role in dust prevention.

[0004] The self-aligning bearing in this reducer clearly lacks the necessary support structure to resist radial forces. This structural deficiency means that the radial forces generated during operation cannot be effectively dispersed and offset. Due to the lack of sufficient support, the radial forces easily cause the rolling elements inside the bearing to deviate laterally, accompanied by a certain amount of elastic deformation. This deviation and deformation further narrows the contact area between the raceway and the rolling elements, reducing the contact area. When the contact stress gradually accumulates and exceeds the limit that the bearing material can withstand, it will trigger a series of negative effects, including fatigue wear and the gradual propagation of microcracks. Over time, these tiny damages will continue to accumulate and deteriorate, eventually leading to damage to the overall bearing structure, seriously affecting the normal operation and service life of the reducer. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A reducer with a radial force-resistant dual-support output structure includes a reducer body, a base fixedly connected to the bottom of the reducer body, an opening at the center of the front end of the reducer body with a rotatable shaft extending from the opening, an output mechanism installed at the front of the reducer body, the output mechanism including a housing, the front end of the reducer body being fixedly connected to the rear end of the housing, two sets of meshing herringbone gears being installed inside the housing, and multiple sets of mounting posts being fixedly connected to the outer edge of the front end of the herringbone gears, with bearings installed at the front end of the mounting posts.

[0008] As a further description of the above technical solution: A square hole is provided at one end of the top of the box, and a box body is fixedly connected to the inner wall of the square hole. A threaded hole is provided at the center of the top of the box, and an oil tank is threadedly connected to the inner wall of the threaded hole.

[0009] As a further description of the above technical solution: The oil tank has a through-hole at the top center, and a push rod is slidably connected to the inner wall of the hole. Dustproof and ventilation nets are installed at both ends of the top of the box.

[0010] As a further description of the above technical solution: A square hole is provided at one bottom end of the box, and a manifold is fixedly connected to the inner wall of the square hole. Multiple sets of threaded through holes are provided at the bottom of the manifold, and an oil receiving tank is threadedly connected to the inner wall of each threaded through hole.

[0011] As a further description of the above technical solution: A rotating ring extends through the rear end of the housing. The outer wall of the shaft passes through the inner wall of the rotating ring and extends into the housing. A shaft collar is fixedly connected to one side of the rear end of the inner wall of the housing. A shaft core is rotatably connected to the inner wall of the shaft collar. The front end of the shaft and the front end of the shaft core are fixedly connected to the rear end of the herringbone gear.

[0012] As a further description of the above technical solution: The front end of the inner wall of the box is fitted with a front plate. Both ends of the front plate are provided with through-holes. The top center of the front plate is provided with a through-hole, and the inner wall of the through-hole is fixedly connected with a threaded tube.

[0013] As a further description of the above technical solution: Hollow plates are passed through the top and bottom of the box. Threaded holes are formed in the hollow plates, and threaded rods are threaded to the inner walls of the threaded holes. One end of the outer wall of each threaded rod is threaded to both ends of the inner wall of a threaded tube. Rotary plates are fixedly connected to the opposite sides of both sets of threaded rods.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) By setting two sets of herringbone gear structures, since there is a mechanical coupling relationship between the axial force and the radial force of the bearing, the herringbone gear can indirectly affect the balance of the radial force through its symmetrical design. The axial force generated by its double helix structure can cancel each other out, thereby reducing the axial load of the bearing. This balance of axial force indirectly reduces the pressure on the radial bearing, thereby achieving the effect of resisting the radial force. This not only further improves the service life of the reducer, but also improves the stability of the overall bearing structure.

[0015] (2) By setting the connection structure between the threaded rod and the threaded tube, the front plate can be fixed in the box. The user can rotate the threaded rod using the U-shaped rotating plate. When the threaded rod is taken out of the threaded tube, the bearing behind the front plate can be disassembled or replaced. By setting the oil tank, the lubricating oil can be stored. By setting the simple connection between the oil tank and the box, the disassembly and assembly of the oil tank is more convenient and quick. It is also convenient for the user to replenish the lubricating oil in the oil tank. A piston is installed at the bottom of the push rod. When the push rod slides down, it can squeeze the lubricating oil in the oil tank into the box. The lubricating oil falling into the box can contact the herringbone gear, which helps to improve the smoothness of the rotation of the two sets of herringbone gears. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the present invention; Figure 2 This is the right view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a top sectional view of the output mechanism in this utility model.

[0017] The correspondence between the labels and component names in the attached figures is as follows: 1. Gearbox body; 2. Base; 3. Shaft; 4. Output mechanism; 41. Housing; 42. Box; 43. Oil tank; 44. Push rod; 45. Dustproof ventilation mesh; 46. Manifold box; 47. Oil tank; 48. Rotary ring; 49. Shaft collar; 410. Shaft core; 411. Herringbone gear; 412. Mounting column; 413. Bearing; 414. Front plate; 415. Output hole; 416. Threaded pipe; 417. Hollow plate; 418. Threaded rod; 419. Rotary plate. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0021] Reference Figure 1-4 This utility model provides an embodiment of a reducer with a radial force-resistant dual-support output structure, comprising a reducer body 1, a base 2 fixedly connected to the bottom of the reducer body 1, an opening at the center of the front end of the reducer body 1, and a rotatable shaft 3 extending from the opening, a housing 41 fixedly connected to the front end of the reducer body 1, a square hole at one end of the top of the housing 41, a box 42 fixedly connected to the inner wall of the square hole, an opening at the bottom of the box 42, and the internal space of the box 42 communicating with the internal space of the housing 41, a threaded hole at the center of the top of the box 42, and an oil tank 43 threadedly connected to the inner wall of the threaded hole, by setting... The oil tank 43 can store lubricating oil. The simple connection between the oil tank 43 and the box 42 makes the disassembly and assembly of the oil tank 43 more convenient and quick. It also makes it convenient for users to replenish the lubricating oil inside the oil tank 43. A through-hole is opened at the center of the top of the oil tank 43, and a push rod 44 is slidably connected to the inner wall of the hole. A piston is installed at the bottom of the push rod 44. When the push rod 44 slides down, it can squeeze the lubricating oil in the oil tank 43 into the box 41. Dustproof ventilation nets 45 are installed at both ends of the top of the box 42. By setting the dustproof ventilation nets 45, the heat generated inside the box 41 can be discharged.

[0022] A square hole is provided at one bottom end of the housing 41, and a manifold 46 is fixedly connected to the inner wall of the square hole. Multiple sets of threaded holes are provided at the bottom of the manifold 46, and oil collection tanks 47 are threadedly connected to the inner walls of each threaded hole. An opening is provided at the top of the manifold 46, and the internal space of the manifold 46 communicates with the internal space of the housing 41. Excess or dripping lubricating oil inside the housing 41 can fall into the manifold 46 and be collected by the oil collection tanks 47. A rotating ring 48 passes through the rear end of the housing 41, and the outer wall of the shaft 3 extends into the housing 41 through the inner wall of the rotating ring 48. The internal space of the housing 41 communicates with the internal space of the reducer body 1. A shaft collar 49 is fixedly connected to one side of the rear end of the inner wall of the housing 41, and a shaft core 410 is rotatably connected to the inner wall of the shaft collar 49. Herringbone gears 411 are fixedly connected to the front ends of both the shaft 3 and the shaft core 410. The outer teeth of the two sets of herringbone gears 411 mesh with each other. Multiple sets of mounting posts 412 are fixedly connected to the outer edge of the front end of the herringbone gears 411. Bearings 413 are installed at the front end of the mounting posts 412. By setting up the structure of two sets of herringbone gears 411, since there is a mechanical coupling relationship between the axial force and the radial force of the bearings 413, the herringbone gears 411 can indirectly affect the balance of the radial force through their symmetrical design. The axial force generated by their double helix structure can cancel each other out, thereby reducing the axial load of the bearings 413. This balance of axial force indirectly reduces the stress on the radial bearings 413, thereby achieving the effect of resisting the radial force. The lubricating oil falling into the housing 41 can contact the herringbone gears 411, which helps to improve the smoothness of the rotation of the two sets of herringbone gears 411. By setting up two sets of bearings 413, a dual support output function can be achieved.

[0023] A front plate 414 is fitted onto the front end of the inner wall of the housing 41. Both ends of the front plate 414 have through-holes 415. A through-hole is located at the center of the top of the front plate 414, and a threaded tube 416 is fixedly connected to the inner wall of the through-hole. Hollow plates 417 extend through the top and bottom of the housing 41. Through-holes are formed in the hollow plates 417, and threaded rods 418 are threaded to the inner walls of these holes. One end of each threaded rod 418 is threaded to both ends of the inner wall of the threaded tube 416. Rotary plates 419 are fixedly connected to the opposite sides of both sets of threaded rods 418. This connection structure between the threaded rods 418 and the threaded tube 416... The front plate 414 can be fixed in the housing 41. The user can rotate the threaded rod 418 using the U-shaped rotating plate 419. When the threaded rod 418 is removed from the threaded tube 416, the bearing 413 behind the front plate 414 can then be disassembled or replaced. The output mechanism 41 can be formed by setting up the housing 41, box 42, oil tank 43, push rod 44, dustproof ventilation mesh 45, manifold 46, oil tank 47, rotating ring 48, shaft collar 49, shaft core 410, herringbone gear 411, mounting column 412, bearing 413, front plate 414, output hole 415, threaded tube 416, hollow plate 417, threaded rod 418 and U-shaped rotating plate 419.

[0024] The above description provides a more detailed explanation of the present invention in conjunction with specific embodiments. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present invention.

Claims

1. A speed reducer with a radial force-resistant double-support output structure, comprising a speed reducer body (1), characterized in that: The base (2) is fixedly connected to the bottom of the reducer body (1). The reducer body (1) has an opening at the center of the front end, and a rotatable shaft (3) extends out of the opening. An output mechanism (4) is installed at the front of the reducer body (1). The output mechanism (4) includes a housing (41). The front end of the reducer body (1) is fixedly connected to the rear end of the housing (41). Two sets of meshing herringbone gears (411) are installed inside the housing (41). Multiple sets of mounting columns (412) are fixedly connected to the outer edge of the front end of the herringbone gears (411). A bearing (413) is installed at the front end of the mounting column (412).

2. The reducer with a radial force-resistant double-support output structure according to claim 1, characterized in that: The top of the box (41) has a square hole, and the inner wall of the square hole is fixedly connected to the box body (42). The top center of the box body (42) has a threaded hole, and the inner wall of the threaded hole is threadedly connected to the oil tank (43).

3. The reducer with a radial force-resistant double-support output structure according to claim 2, characterized in that: The oil tank (43) has a through-hole at the top center, and a push rod (44) is slidably connected to the inner wall of the hole. Dustproof ventilation nets (45) are passed through both ends of the top of the box (42).

4. The reducer with a radial force-resistant double-support output structure according to claim 1, characterized in that: The bottom of the box (41) has a square hole, and the inner wall of the square hole is fixedly connected to a manifold box (46). The bottom of the manifold box (46) has multiple sets of threaded through holes, and the inner wall of each threaded through hole is threadedly connected to an oil receiving tank (47).

5. The reducer with a radial force-resistant double-support output structure according to claim 1, characterized in that: The rear end of the housing (41) is connected to a rotating ring (48). The outer wall of the shaft (3) passes through the inner wall of the rotating ring (48) and extends into the housing (41). A shaft collar (49) is fixedly connected to one side of the rear end of the inner wall of the housing (41). A shaft core (410) is rotatably connected to the inner wall of the shaft collar (49). The front end of the shaft (3) and the front end of the shaft core (410) are fixedly connected to the rear end of the herringbone gear (411).

6. The reducer with a radial force-resistant double-support output structure according to claim 1, characterized in that: The front end of the inner wall of the box (41) is fitted with a front plate (414). Both ends of the front plate (414) are provided with output holes (415) that pass through from front to back. The top center of the front plate (414) is provided with a circular hole that passes through from top to bottom, and the inner wall of the circular hole is fixedly connected with a threaded pipe (416).

7. The reducer with a radial force-resistant double-support output structure according to claim 6, characterized in that: Hollow plates (417) are passed through the top and bottom of the box (41). Threaded holes are opened in the hollow plates (417) and threaded rods (418) are threaded to the inner walls of the threaded holes. One end of the outer wall of each threaded rod (418) is threaded to both ends of the inner wall of the threaded tube (416). A U-shaped rotating plate (419) is fixedly connected to the opposite sides of the two sets of threaded rods (418).

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