CN211082601U - Drive shafts and spindle gears for gears - Google Patents

Abstract

The utility model belongs to the technical field of speed change devices, in particular to a transmission shaft for a speed change device and a main shaft speed change device, wherein the transmission shaft for the speed change device comprises a locking section and a connecting section; the locking section is fixedly connected with the connecting section, and the axes of the connecting section and the locking section are on the same straight line; the locking section is provided with mounting holes penetrating through two ends of the axis of the locking section, and the peripheral side wall of the locking section is provided with a threaded hole and a first through hole corresponding to the threaded hole; the connecting section is provided with exhaust holes penetrating through two ends of the axis of the connecting section, the exhaust holes are communicated with the mounting holes, so that the phenomenon that the input shaft slips relative to the locking section in a long-time working state is avoided, power input by the power device can be better transmitted to the input shaft, the connection precision is improved, the power transmission is better realized, and the power is greatly enhanced.

Description

Drive shafts and spindle gears for gears

technical field

The utility model belongs to the technical field of speed change devices, in particular to a transmission shaft and a main shaft speed change device for speed change devices.

Background technique

According to the traditional transmission device, when it needs to work under a large load, it is often necessary to input a large torque into the transmission device through the input shaft, and then output power from the output shaft, but after a long time under the influence of high load The input shaft is easily worn out and scrapped, so it is necessary to connect an input shaft to the input shaft. Although the existing input shaft can reduce the wear of a part of the input shaft, there is another problem where the input shaft is connected to the input shaft. The input shaft and the input shaft are not connected in place, which often leads to the fact that the rotation axis of the input shaft and the input shaft are not on the same line during operation, which will result in a significant reduction in the input power and even serious accidents.

To this end, it is necessary to design a new type of input shaft, which can be precisely connected with the input shaft, and minimize the loss of power to prevent accidents.

Utility model content

The purpose of the utility model is to provide a transmission shaft and a main shaft speed change device for a speed change device, which aims to solve the technical problem of power attenuation caused by low connection accuracy between the input shaft and the input shaft in the prior art.

In order to achieve the above purpose, an embodiment of the present invention provides a transmission shaft for a speed change device, comprising a locking section and a connecting section; the locking section is fixedly connected to the connecting section, and the connecting section is connected to the connecting section. The axis of the locking segment is on the same straight line; the locking segment is provided with mounting holes running through both ends of the axis, and the outer peripheral side wall of the locking segment is provided with threaded holes and positions corresponding to the threaded holes Corresponding first through holes; the connecting section is provided with exhaust holes penetrating both ends of the axial center thereof, and the exhaust holes are communicated with the installation holes.

Optionally, the bottom of the locking segment is further provided with a first elastic escape groove located between the threaded hole and the first via hole, and opposite sides of the first elastic escape groove are further opened. There are two second elastic escape grooves arranged in parallel.

Optionally, the first elastic escape groove and the two second elastic escape grooves are arranged in a vertical shape and form an "H" shape.

Optionally, the bottom surface of the locking segment is further provided with two positioning holes, and the two positioning holes are arranged adjacent to each other along the circumferential direction of the bottom surface.

Optionally, a groove is provided on the outer peripheral side wall of the top of the locking segment, and the center of the groove is on the same straight line as the center of the top surface of the locking segment.

Optionally, the diameter of the locking segment is larger than the diameter of the connecting segment.

Optionally, the outer peripheral side wall of the connecting segment is provided with second via holes penetrating through both ends of the side wall.

Optionally, the projection of the center of the second via hole just falls on the center extension line of the first elastic escape groove.

Optionally, the transmission shaft for the transmission device is made of carbon steel or alloy steel.

The above-mentioned one or more technical solutions in the transmission shaft for the speed change device provided by the embodiment of the present invention have at least one of the following technical effects: when using the drive shaft for the speed change device of the present invention, firstly, the The locking section of the device is sleeved on the input shaft that needs to be used together, and can be quickly installed through the opening installation holes. Then, when the input shaft is inserted into a suitable position, use a fastener to insert the outer peripheral side of the locking section. In the threaded holes and through holes set on the wall, the locking section of the input shaft can be locked by fasteners. The fasteners in this scheme can be screws or bolts. After locking, the device is connected. The part is connected with the power device, because the axis of the connecting section and the locking section are set on the same straight line, and the locking section increases the locking strength of the input shaft through the fasteners, which ensures long-term work. The input shaft will not slip relative to the locking section in the state of the lock, so that the power input by the power device can be better transmitted to the input shaft, which is beneficial to the improvement of the connection accuracy, and the transmission of power is better achieved, so that the power substantially strengthened.

Another embodiment of the present invention provides a main shaft speed change device, which includes the above-mentioned transmission shaft for the speed change device.

The above-mentioned one or more technical solutions in the main shaft speed change device provided by the embodiment of the present invention have at least one of the following technical effects: the main shaft speed change device of the present invention uses the above-mentioned transmission shaft for the speed change device, because it adopts the The shaft center of the connecting section and the locking section are set on the same straight line, and the locking section increases the locking strength of the input shaft through fasteners, which ensures that the input shaft will not be opposite to each other under long-term working conditions. The phenomenon of slippage occurs in the locking section, so that the power input by the power device can be better transmitted to the input shaft, which is beneficial to the improvement of the connection accuracy, and the transmission of power is better achieved, so that the power is greatly enhanced.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present utility model. For some novel embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a transmission shaft for a speed change device provided by an embodiment of the present invention.

FIG. 2 is another structural schematic diagram of a transmission shaft for a speed change device provided by an embodiment of the present invention.

FIG. 3 is a schematic plan view of a transmission shaft for a transmission according to an embodiment of the present invention.

FIG. 4 is another schematic plan view of a transmission shaft for a transmission according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a transmission shaft used for a transmission according to an embodiment of the present invention.

FIG. 6 is a bottom view of a transmission shaft for a speed change device provided by an embodiment of the present invention.

Among them, each reference sign in the figure:

10—Locking section 11—Installation hole 12—Threaded hole

13—the first via hole 14—the first elastic escape groove 15—the second elastic escape groove

16—positioning hole 17—groove 20—connecting section

21—Exhaust hole 22—Second via hole.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the embodiments of the present invention, but should not be construed as a limitation of the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" The orientation or positional relationship indicated by "straight", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present invention and simplified description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more, unless otherwise expressly and specifically defined.

In the embodiments of the present utility model, unless otherwise explicitly specified and limited, terms such as "installation", "connected", "connected", "fixed" should be understood in a broad sense, for example, it may be a fixed connection or a Detachable connection or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium, internal communication between two elements or interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

In an embodiment of the present invention, as shown in Figures 1-2, a transmission shaft for a transmission device is provided, comprising a locking section 10 and a connecting section 20; the locking section 10 and the connecting section 20 is fixedly connected, and the axis of the connecting section 20 and the locking section 10 are on the same line; A threaded hole 12 and a first through hole 13 corresponding to the position of the threaded hole 12 are provided on the outer peripheral side wall of the connecting section 20; 21 communicates with the mounting hole 11 .

When using the transmission shaft for the speed change device of the present invention, firstly, the locking section 10 of the device is sleeved on the input shaft that needs to be used together, and the quick installation can be realized through the opening installation hole 11, and then, When the input shaft is inserted to a suitable position, the fasteners are inserted into the threaded holes 12 and through holes provided on the outer peripheral side wall of the locking segment 10, and the locking segment 10 can be used to lock the input shaft through the fasteners. , the fasteners of this scheme can use screws or bolts. After locking, the connecting part of the device is connected to the power device. Since the axes of the connecting section 20 and the locking section 10 are set on the same straight line , and the locking section 10 increases the locking strength of the input shaft through fasteners, which ensures that the input shaft will not slip relative to the locking section 10 under long-term working conditions, so that the input shaft of the power device will not slip. The power can be better transmitted to the input shaft, which is beneficial to the improvement of the connection accuracy, and the power transmission can be better realized, which greatly strengthens the power.

In another embodiment of the present utility model, as shown in FIGS. 1 and 3 , the bottom of the locking segment 10 is further provided with a first elastic element located between the threaded hole 12 and the first via hole 13 . For the avoidance groove 14 , two second elastic avoidance grooves 15 arranged in parallel are further opened on opposite sides of the first elastic avoidance groove 14 . Specifically, the first elastic escape groove 14 provided between the threaded hole 12 and the first through hole 13 can make the locking segment 10 generate greater elastic deformation when locking the input shaft, so that the locking segment 10 can move toward the input shaft. The direction inside the mounting hole 11 is contracted, so that the clamping force of the locking section 10 on the input shaft is stronger, so that the input shaft is not easy to slip during the rotation process. The second elastic avoidance grooves 15 arranged in parallel provide a larger elastic deformation range for the locking segment 10. Since the two second elastic avoidance grooves 15 are provided, the locking segment 10 can lock the input shaft when locking the input shaft. The installation hole 11 and the axis of the input shaft can be kept on the same straight line, that is to say, the input shaft will not be offset relative to the device during rotation to cause accidents, which is beneficial to the improvement of the safety of the whole process.

In another embodiment of the present invention, as shown in FIGS. 1 and 3 , the first elastic escape groove 14 and the two second elastic escape grooves 15 are arranged in a vertical shape and form an “H” shape . Specifically, the first elastic avoidance groove 14 is just arranged at the position of the midpoint of the two second elastic avoidance grooves 15 , and the two second elastic avoidance grooves 15 are vertically divided, so that the locking section 10 passes through the tightening. After the fastener locks the input shaft and elastically deforms, it can produce higher matching accuracy with the input shaft, and ensures that the locking section 10 beside the first elastic avoidance groove 14 can better elastically deform the input shaft. The shaft is clamped, and it is not easy to be offset, which is beneficial to the precision control of the whole process.

In another embodiment of the present invention, as shown in FIGS. 2 , 5 and 6 , the bottom surface of the locking segment 10 is further provided with two positioning holes 16 , and the two positioning holes 16 are along the circumferential direction of the bottom surface. Adjacent arrangement. Specifically, the two locating holes 16 are arranged adjacent to each other in the circumferential direction, which is beneficial to the simplicity of processing. The two locating holes 16 provided can be used to insert the pins provided on the input shaft. The cooperation between the pins can realize rapid positioning and installation between the device and the input shaft, and the positioning and installation method also limits the installation and connection positions of other components, which is beneficial to improve the matching accuracy between the device and the input shaft.

In another embodiment of the present invention, as shown in FIGS. 1 to 5 , a groove 17 is formed on the outer peripheral side wall of the top of the locking section 10 , and the center of the groove 17 is connected to the lock. The centers of the top surfaces of the tight segments 10 are on the same straight line. Specifically, a groove 17 is arranged on the outer peripheral side wall of the top of the locking section 10 to be used for clamping components, such as a circlip. By clamping the circlip on the groove 17, the device can be limited when it rotates It will not do axial movement, that is to say, it is guaranteed that the device will not be offset in the working state and cause accidents. It is beneficial to set the center of the groove 17 and the center of the top end surface of the locking section 10 on the same straight line. The position where the snap ring is clamped on the groove 17 is also kept on the same line with the center of the top end surface of the locking section 10, so that when the device is placed horizontally or vertically, there will be no relative offset phenomenon, which is beneficial to the device Operational stability.

In another embodiment of the present invention, as shown in FIGS. 1 to 5 , the diameter of the locking section 10 is larger than the diameter of the connecting section 20 . Specifically, the diameter of the locking section 10 is larger than the diameter of the connecting section 20. Since the locking section 10 is connected with the input shaft, and the connecting section 20 is connected with the power mechanism, the connection method will cause the input shaft and power mechanism to be stressed , this stress is usually hoop stress. The input shaft connected to the locking section 10 may be squeezed by hoop stress, which may cause wear of the input shaft under long-term working conditions, so it is necessary to set a larger wall thickness To ensure that the input shaft is not easily squeezed by the hoop stress to reduce the service life, and the power mechanism connected to the connecting section 20 is usually due to the high hardness of its own material, the deformation after being squeezed by the hoop stress is less than that of the input shaft. So serious, the diameter of the connecting section 20 corresponding to the power mechanism is relatively small. The arrangement of this solution is conducive to protecting the service life of the input shaft, maintaining the working state, and improving work efficiency.

In another embodiment of the present invention, as shown in FIGS. 1 , 3 and 5 , the outer peripheral side wall of the connecting segment 20 is provided with second through holes 22 penetrating both ends of the side wall. Specifically, a second through hole 22 is opened on the outer peripheral side wall of the connecting section 20 , and when the power device and the connecting part are matched and connected, the power device can be fastened by means of a fastener passing through the second through hole 22 , the fasteners in this scheme can be screws or bolts. After tightening, the power device and the connecting part cooperate more firmly, and the power device and the connecting part will not slip during operation, which is beneficial to the service life of the device, and also has Conducive to the stability of the operation of the device.

In another embodiment of the present invention, as shown in FIGS. 1 and 3 , the projection of the center of the second via hole 22 just falls on the center extension line of the first elastic escape groove 14 . Specifically, because the projection of the center of the second via hole 22 just falls on the center extension line of the first elastic escape groove 14, when connection is required, that is, when the device needs to be connected to the input shaft and the power device respectively, it can be By installing in any order, you can first connect the locking section 10 to the input shaft or connect the connecting section 20 to the power device first, and after installing in any order, you can directly connect to the next mechanism without turning the device Finding the connection position of the next mechanism is beneficial to the improvement of work efficiency.

In another embodiment of the present invention, as shown in FIGS. 1 to 5 , the transmission shaft used for the speed change device is made of carbon steel or alloy steel. Specifically, the device made of carbon steel or alloy steel has high comprehensive mechanical properties and high hardness, and is not easily affected by deformation due to hoop stress under long-term working conditions. , which is beneficial to prolong the service life of the device and improve economic benefits.

In another embodiment of the present invention, a main shaft speed change device is provided, which includes the above-mentioned transmission shaft for the speed change device. Specifically, the main shaft speed change device of the present invention uses the above-mentioned speed change device Because the shaft center of the connecting section 20 and the locking section 10 are set on the same straight line, and the locking section 10 increases the locking strength of the input shaft through fasteners, it ensures the long-term In the working state, the input shaft will not slip relative to the locking section 10, so that the power input by the power device can be better transmitted to the input shaft, which is beneficial to the improvement of the connection accuracy and the better realization of the power transmission. Makes the power greatly enhanced.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (10)

1. A propeller shaft for a transmission, characterized by: comprises a locking section and a connecting section; the locking section is fixedly connected with the connecting section, and the axes of the connecting section and the locking section are on the same straight line; the locking section is provided with mounting holes penetrating through two ends of the axis of the locking section, and the peripheral side wall of the locking section is provided with a threaded hole and a first through hole corresponding to the threaded hole; the connecting section is provided with exhaust holes penetrating through two ends of the axis of the connecting section, and the exhaust holes are communicated with the mounting holes.

2. The propeller shaft for a transmission according to claim 1, wherein: the bottom of the locking section is further provided with a first elastic avoiding groove between the threaded hole and the first via hole, and two second elastic avoiding grooves which are arranged in parallel are further formed in two opposite sides of the first elastic avoiding groove.

3. The propeller shaft for a transmission according to claim 2, wherein: the first elastic avoiding groove and the two second elastic avoiding grooves are arranged in a vertical shape and form an H shape.

4. The propeller shaft for a transmission according to claim 1, wherein: the bottom surface of the locking section is also provided with two positioning holes which are adjacently arranged along the circumferential direction of the bottom surface.

5. The propeller shaft for a transmission according to claim 1, wherein: the locking section is characterized in that a groove is annularly arranged on the wall of the outer periphery of the top of the locking section, and the circle center of the groove and the circle center of the top end face of the locking section are on the same straight line.

6. The propeller shaft for a transmission according to claim 1, wherein: the diameter of the locking section is larger than that of the connecting section.

7. The propeller shaft for a transmission according to claim 2, wherein: and a second through hole penetrating through two ends of the side wall is formed in the peripheral side wall of the connecting section.

8. The propeller shaft for a transmission according to claim 7, wherein: the projection of the circle center of the second via hole is just on the central extension line of the first elastic avoiding groove.

9. A propeller shaft for a speed change device according to any one of claims 1 to 8, wherein: the transmission shaft for the speed change device is made of carbon steel or alloy steel.

10. A spindle speed change device characterized in that: a propeller shaft for a transmission including a propeller shaft according to any one of claims 1 to 9.

Images