RV reducer with output locking function

Abstract

The application relates to an RV reducer with an output locking function, which comprises an RV reducer body, an output locking disc, an input shaft limiting screw, a motor connecting shaft and an elastic component. The output locking disc is coaxially fixed outside an output disc of the RV reducer body. An input shaft of the RV reducer body is installed in the reducer body in a displaceable manner along an axial direction. An installation hole is arranged at a power input end of the input shaft, and an outer spline is arranged at the other end. The input shaft limiting screw is connected with a self-locking threaded hole on the output locking disc, and the elastic component is arranged in the installation hole. The output shaft limiting screw and the elastic component are matched to realize axial positioning of the input shaft. The inner end of the motor connecting shaft is drivingly connected with the power input end. When the RV reducer is in a running state, the outer spline of the input shaft is in a disengaged state with a spline hole section of the output locking disc. When the RV reducer is in a locking state, the outer spline of the input shaft is in a matched state with the spline hole section of the output locking disc. The application realizes self-locking of the reducer.

Description

Technical Field

[0001] This invention belongs to the field of speed reducer technology, and specifically relates to an RV speed reducer with output locking function. Background Technology

[0002] RV reducers are a new type of speed reduction transmission device characterized by high transmission ratio, low output speed, and high load capacity. They are increasingly being used in heavy-duty applications, such as lifting equipment in large equipment manufacturing workshops and dock freight yards. Due to the usage requirements or safety considerations of the output mechanism, reducers need to have good self-locking performance under high load conditions. For example, when the lifted load needs to stop in mid-air, the reducer of the lifting equipment must be able to self-lock, a capability that the cycloidal transmission type used in RV reducers lacks.

[0003] Based on the shortcomings of the RV reducer mentioned above, it is necessary to design a mechanism that can achieve the output locking effect on the basis of the existing RV reducer structure in order to meet relevant usage requirements or eliminate safety hazards. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an RV reducer with output locking function that is simple in structure, easy to operate, and can achieve a good output locking effect.

[0005] The above-mentioned objective of this invention is achieved through the following technical solution:

[0006] An RV reducer with output locking function is characterized by comprising an RV reducer body, an output locking disc, an input shaft limiting screw, a motor connecting shaft, and an elastic component.

[0007] The output locking disc is located on the outside of the output disc of the RV reducer body and is coaxially fixedly connected to the output disc of the RV reducer body by screws; the output locking disc is provided with a central hole, which includes spline hole sections and self-locking threaded hole sections provided inside and outside;

[0008] The input shaft of the RV reducer body is mounted in the reducer body in an axially movable manner; a mounting hole is provided at the power input end of the input shaft; an external spline is provided at the end of the input shaft away from the power input, and the external spline matches the spline hole section on the output locking disc.

[0009] The input shaft limiting screw is threadedly connected to the self-locking threaded hole on the output locking disc via a self-locking thread. The elastic component is disposed in the mounting hole at the power input end of the input shaft. The output shaft limiting screw and the elastic component cooperate, with the output shaft limiting screw applying a top pressure to the end of the input shaft away from the power input, and the elastic component applying an elastic top pressure to the power input end of the input shaft to achieve axial positioning of the input shaft. The inner end of the motor connecting shaft is coaxially driven and connected to the power input end of the input shaft.

[0010] When the RV reducer is in operation, the input shaft limit screw is screwed into the inner working position, and the external spline of the input shaft is disengaged from the spline hole of the output locking disc; when the RV reducer is in the locked position, the input shaft limit screw is screwed into the outer working position, and the external spline of the input shaft is engaged with the spline hole of the output locking disc.

[0011] Furthermore, a ball socket is provided at the inner end of the output shaft limiting screw and the corresponding end of the input shaft, and a steel ball is provided in the ball socket. The inner end of the output shaft limiting screw forms a pressing contact with the corresponding end of the input shaft through the steel ball.

[0012] Furthermore, the mounting hole at the power input end of the input shaft is composed of an inner hole section, an intermediate transition hole section, and an outer spline hole section arranged sequentially inside and outside.

[0013] Furthermore, the motor connecting shaft forms a spline fit with the spline hole section of the power input end of the input shaft through an external spline; a center hole is provided at one end of the motor connecting shaft located inside the RV reducer, and the center hole is composed of a smooth hole section and a threaded hole section arranged sequentially inside and outside.

[0014] Furthermore, the elastic component includes a compression spring, a spring stop, and a spring support rod, with the spring support rod being bolted. The spring support rod is axially positioned at the power input end of the input shaft and has a mounting hole. The head of the spring support rod is located within the inner bore section and forms a clearance fit with the inner bore section. The screw end of the spring support rod is threadedly connected to the threaded hole section on the motor connecting shaft. The spring stop is positioned in the intermediate transition hole section and fitted onto the spring support rod. The compression spring is fitted onto the spring support rod, with one end of the compression spring contacting the outer side of the spring stop, causing the inner side of the spring stop to press against the inner bottom surface of the intermediate transition hole section. The other end of the compression spring extends into the smooth hole section on the motor connecting shaft and presses against the bottom surface of the smooth hole section.

[0015] The advantages and positive effects of this invention are as follows:

[0016] 1. This invention designs the input shaft of the RV reducer body as a structure that can move left and right along the axial direction. An output locking disc is set on the outside of the output disc of the reducer body and is coaxially fixedly connected to the output disc. An input shaft limiting screw is connected through a self-locking threaded hole in the middle of the output locking disc. An elastic component is set in the mounting hole at the power input end of the output shaft. Force is applied to both ends of the input shaft by the input shaft limiting screw and the elastic component to achieve axial positioning of the input shaft. By adjusting the connection position between the input shaft limiting screw and the self-locking threaded hole on the output locking disc, the input shaft and the output locking disc can be connected and disconnected via a spline engagement. In the disconnected state, the RV reducer can operate normally; in the connected state, the output of the RV reducer can be locked. This solves the problem of the RV reducer's inability to self-lock and eliminates safety hazards during the use of the RV reducer.

[0017] 2. This invention achieves a self-locking effect for the RV reducer by adding position-adjustable structural components to both ends of the input shaft while ensuring minimal changes to the main structure of the RV reducer. It has the advantages of simple structure, convenient operation, and good self-locking effect. Attached Figure Description

[0018] Figure 1 This is a longitudinal sectional view of the present invention;

[0019] Figure 2 This is an exploded perspective view of the present invention;

[0020] Figure 3 This is a three-dimensional view of the invention from the perspective of the input end;

[0021] Figure 4 This is a perspective view of the invention from the end furthest from the power input. Detailed Implementation

[0022] The structure of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that these embodiments are descriptive and not limiting.

[0023] For an RV reducer with output locking function, please refer to [link / reference]. Figures 1-4 The invention features an RV reducer body 4, an output locking disc 3, an input shaft limit screw 2, a motor connecting shaft 9, and an elastic component.

[0024] The output locking disc is located on the outside of the output disc of the RV reducer body and is coaxially fixedly connected to the output disc of the RV reducer body by screws 10. The output locking disc is provided with a central hole, which is composed of a spline hole section, a smooth transition end, and a self-locking threaded hole section arranged sequentially inside and outside.

[0025] The input shaft 5 of the RV reducer body is mounted within the reducer body in an axially movable manner. A mounting hole is provided at the power input end of the input shaft, used for mounting the elastic component and the motor connecting shaft. The mounting hole consists of an inner hole section, an intermediate transition hole section, and an outer spline hole section arranged sequentially inside and outside. An external spline is provided at the end of the input shaft furthest from the power input, which matches the spline hole section on the output locking disc. The external spline at the end of the input shaft furthest from the power input serves two purposes: firstly, during RV reducer operation, it transmits power through spline engagement with the corresponding connecting component inside the RV reducer body; secondly, when locking is required, it locks the output by engaging with the spline hole section of the center hole on the output locking disc.

[0026] The input shaft limiting screw has a screw structure with a handle at the outer end and a self-locking thread. The input shaft limiting screw is threadedly connected to the self-locking threaded section of the center hole on the output locking disc. The handle of the input shaft limiting screw is located on the outside of the output locking disc to facilitate the rotation operation of the input shaft limiting screw. The handle can be, but is not limited to, a disc structure with anti-slip texture on the surface as shown in the attached figure.

[0027] The motor connecting shaft is used for fixed connection to the output end of the motor driving the RV reducer. The motor connecting shaft forms a spline engagement with the splined hole section of the power input end of the input shaft via an external spline. A center hole is provided at one end of the motor connecting shaft located inside the RV reducer. The center hole is composed of a smooth hole section and a threaded hole section arranged sequentially inside and outside. The diameter of the smooth hole section is larger than the diameter of the threaded hole.

[0028] The output shaft limiting screw and the elastic component cooperate to apply a top pressure to the end of the input shaft away from the power input, and the elastic component applies an elastic top pressure to the power input end of the input shaft to achieve the axial positioning of the input shaft.

[0029] The inner end of the output shaft limiting screw and the end face of the input shaft away from the power input can form a pressing contact through direct contact or through an intermediate component. To reduce wear between the end faces of the output shaft limiting screw and the input shaft, ball sockets are provided opposite to each other at the inner end of the output shaft limiting screw and the corresponding end of the input shaft. A steel ball 1 is provided in the ball socket, which reduces the friction between the end of the output shaft limiting screw and the end of the input shaft.

[0030] The elastic component includes a compression spring 8, a spring stop 6, and a spring support rod 7. The spring support rod is bolted. The spring support rod is axially positioned at the power input end of the input shaft and has a mounting hole. The head of the spring support rod is located within the inner bore section and forms a clearance fit with the inner bore section. The length of the inner bore section ensures that the head of the spring support rod is located within the inner bore section in both the working and output locked states of the RV reducer. The screw end of the spring support rod forms a threaded connection with the threaded hole section on the aforementioned motor connecting shaft, achieving a coaxial fixed connection between the spring support rod and the motor connecting shaft. The spring stop is located in the intermediate transition hole section and fitted onto the spring support rod. The compression spring is fitted onto the spring support rod, with one end of the compression spring contacting the outer side of the spring stop, causing the inner side of the spring stop to press against the inner bottom surface of the intermediate transition hole section. The other end of the compression spring extends into the smooth hole section on the motor connecting shaft and presses against the bottom surface of the smooth hole section.

[0031] The operating and locking principle of this RV reducer with output locking function is as follows:

[0032] 1. Run

[0033] Screw the output shaft limit screw in to push the input shaft to move axially to the power input end, disengaging it from the spline hole section of the output locking disc. At this time, the output shaft limit screw moves to the inner working position, and the motor connected to the motor connecting shaft can drive the reducer to rotate normally.

[0034] 2. Lock

[0035] When the output shaft limit screw is unscrewed, the compression spring pushes the input shaft to move axially towards the output locking disc until the external spline on the input shaft engages with the spline hole section of the output locking disc. At this point, the output shaft limit screw is screwed to the outer working position, and the RV reducer achieves motion locking.

[0036] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An RV reducer with output locking function, characterized in that: Includes the RV reducer body, output locking disc, input shaft limit screw, motor connecting shaft, and elastic components; The output locking disc is located on the outside of the output disc of the RV reducer body and is coaxially fixedly connected to the output disc of the RV reducer body by screws; the output locking disc is provided with a central hole, which includes spline hole sections and self-locking threaded hole sections provided inside and outside; The input shaft of the RV reducer body is mounted in the reducer body in an axially movable manner; a mounting hole is provided at the power input end of the input shaft; an external spline is provided at the end of the input shaft away from the power input, and the external spline matches the spline hole section on the output locking disc. The input shaft limiting screw is threadedly connected to the self-locking threaded hole on the output locking disc via a self-locking thread. The elastic component is disposed in the mounting hole at the power input end of the input shaft. The output shaft limiting screw and the elastic component cooperate, with the output shaft limiting screw applying a top pressure to the end of the input shaft away from the power input, and the elastic component applying an elastic top pressure to the power input end of the input shaft to achieve axial positioning of the input shaft. The inner end of the motor connecting shaft is coaxially driven and connected to the power input end of the input shaft. When the RV reducer is in operation, the input shaft limit screw is screwed into the inner working position, and the external spline of the input shaft is disengaged from the spline hole of the output locking disc; when the RV reducer is in the locked position, the input shaft limit screw is screwed into the outer working position, and the external spline of the input shaft is engaged with the spline hole of the output locking disc.

2. The RV reducer with output locking function according to claim 1, characterized in that: A ball socket is provided at the inner end of the output shaft limit screw and the corresponding end of the input shaft, and a steel ball is provided in the ball socket. The inner end of the output shaft limit screw forms a pressing contact with the corresponding end of the input shaft through the steel ball.

3. The RV reducer with output locking function according to claim 1, characterized in that: The mounting hole at the power input end of the input shaft consists of an inner hole section, an intermediate transition hole section, and an outer spline hole section arranged sequentially from the inside to the outside.

4. The RV reducer with output locking function according to claim 3, characterized in that: The motor connecting shaft forms a spline fit with the spline hole section of the power input end of the input shaft through an external spline; a center hole is provided at one end of the motor connecting shaft located inside the RV reducer, the center hole being composed of a smooth hole section and a threaded hole section arranged sequentially inside and outside.

5. The RV reducer with output locking function according to claim 4, characterized in that: The elastic component includes a compression spring, a spring stop, and a spring support rod, with the spring support rod being bolted. The spring support rod is axially positioned at the power input end of the input shaft and has a mounting hole. The head of the spring support rod is located within the inner bore section and forms a clearance fit with the inner bore section. The screw end of the spring support rod is threadedly connected to the threaded hole section on the motor connecting shaft. The spring stop is positioned in the intermediate transition hole section and fitted onto the spring support rod. The compression spring is fitted onto the spring support rod, with one end of the compression spring contacting the outer side of the spring stop, causing the inner side of the spring stop to press against the inner bottom surface of the intermediate transition hole section. The other end of the compression spring extends into the smooth hole section on the motor connecting shaft and presses against the bottom surface of the smooth hole section.

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