Gear transmission device

Abstract

The utility model provides a gear transmission device, which belongs to the technical field of mechanical transmission and comprises a gear box body, a driving transmission mechanism and a driven transmission mechanism. A driving bearing seat and a driven bearing seat are arranged in the gear box body; the driving transmission mechanism comprises a driving shaft which is horizontally mounted on a driving bearing seat through a driving bearing and a driving gear which sleeves the periphery of the driving shaft; the shaft end of the driving shaft is arranged outside the gear box body and is connected with a prime motor; the driven transmission mechanism comprises a driven gear meshed with the driving gear, a driven hollow shaft arranged in the driven gear in a penetrating mode, a ball spline sleeve arranged in the driven hollow shaft and a spline shaft arranged in the ball spline sleeve in a penetrating mode. By means of the gear box, the problems that in the prior art, a gear box can only transmit torque, does not have the axial telescopic function, needs to be combined with other mechanisms to achieve axial movement, is large in occupied space, increases structural complexity and the like can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field more specifically, relate to a gear transmission device. BACKGROUND

[0002] Gear box is widely used in various industries, commonly used gear box is generally used to realize the function of acceleration, deceleration through gear combination of different gear number, and the technology of such gear box is mature, standardization, serialization degree is higher, the user can select the finished product more easily.

[0003] At present, the existing gear box can only transmit torque, namely the output shaft only has the action of rotation, generally does not have the function of axial extension and contraction, for the specific application occasion needing to meet the rotation of shaft and axial displacement simultaneously, needs to realize axial movement through combination with other mechanisms, has the problems such as large space occupation and increased structural complexity. UTILITY MODEL CONTENTS

[0004] In view of above problem, the utility model discloses a gear transmission device to solve the prior art, the existing gear box can only transmit torque, namely the output shaft only has the action of rotation, generally does not have the function of axial extension and contraction, for the specific application occasion needing to meet the rotation of shaft and axial displacement simultaneously, needs to realize axial movement through combination with other mechanisms, has the problems such as large space occupation and increased structural complexity.

[0005] The utility model provides a gear transmission device, including gear box, driving mechanism and driven mechanism, wherein,

[0006] The driving bearing seat and driven bearing seat are arranged in the gear box,

[0007] The driving mechanism includes the driving shaft that is horizontally installed on the driving bearing seat through the driving bearing and the driving gear that is sleeved on the outer periphery of the driving shaft, and the shaft end of the driving shaft is arranged outside the gear box and is connected with the prime mover,

[0008] The driven mechanism includes the driven gear that is engaged with the driving gear, the driven hollow shaft that is penetrated in the driven gear, the ball spline sleeve that is arranged in the driven hollow shaft and the spline shaft that is penetrated in the ball spline sleeve, wherein,

[0009] The driven hollow shaft is horizontally mounted on the driven bearing seat through a driven bearing; the inner side wall of the driven gear is connected with the outer side wall of the driven hollow shaft through a first limiting connecting piece; the two ends of the ball spline sleeve are respectively connected with the two ends of the driven hollow shaft; the inner side wall of the driven hollow shaft is connected with the outer side wall of the ball spline sleeve through a second limiting connecting piece; the groove on the outer side wall of the spline shaft is matched with the ball on the inner side wall of the ball spline sleeve.

[0010] In addition, preferably, the ball spline sleeve is a cylindrical structure; a fixed sleeve ring is arranged at each end of the ball spline sleeve; one end of the fixed sleeve ring is butted against the end of the ball spline sleeve, and the other end is vertically provided with a fixed sheet; the fixed sheet is fixedly connected with the end of the driven hollow shaft through a bolt.

[0011] In addition, preferably, the ball spline sleeve is a flange type cylindrical structure; the end of the ball spline sleeve is connected with the end of the driven hollow shaft through a bolt.

[0012] In addition, preferably, the first limiting connecting piece is a flat key or a spline; and / or, the second limiting connecting piece is a flat key or a spline.

[0013] In addition, preferably, a first end cover is arranged at each end of the driving shaft on the gear box body; the first end cover is fixed on the gear box body through a bolt; wherein an axle end protruding hole is arranged on the first end cover at the end of the driving shaft; and / or, a second end cover is arranged at each end of the driven hollow shaft on the gear box body; the second end cover is fixed on the gear box body through a bolt; a driven hollow shaft protruding hole is arranged on the second end cover.

[0014] In addition, preferably, the driving transmission mechanism is a one-stage transmission mechanism or a multi-stage transmission mechanism.

[0015] In addition, preferably, the driving transmission mechanism is a two-stage transmission mechanism; the driving bearing seat comprises a first driving bearing seat and a second driving bearing seat; the driving shaft comprises a first driving shaft horizontally mounted on the first driving bearing seat through a first driving bearing and a second driving shaft horizontally mounted on the second driving bearing seat through a second driving bearing; the driving gear comprises a first driving gear sleeved on the outer periphery of the first driving shaft and a second driving gear sleeved on the outer periphery of the second driving shaft; wherein an intermediate driven gear meshing with the first driving gear is sleeved on the outer periphery of the second driving shaft; the axle end of the first driving shaft is arranged outside the gear box body and connected with the prime mover, and the second driving gear is meshed with the driven gear.

[0016] In addition, preferably, the first driving shaft is arranged in parallel with the second driving shaft or at an angle between the first driving shaft and the second driving shaft.

[0017] In addition, preferably, the driving shaft and the driving gear are integrated.

[0018] In addition, preferably, the gear box comprises a box body and a box cover arranged on top of the box body.

[0019] From the above technical solutions, the gear transmission device provided by the utility model has the advantages that through the structural design of the gear box, the driving transmission mechanism and the driven transmission mechanism, when in use, the prime mover inputs power to the driving shaft, the driving shaft rotates at high speed to drive the driving gear to rotate, the driving gear transmits torque to the driven gear meshed therewith to drive the driven gear to rotate, the driven gear drives the driven hollow shaft to rotate through the first limiting connecting piece, the driven hollow shaft drives the ball spline sleeve to rotate through the second limiting connecting piece, the ball spline sleeve is matched between the spline (ball) and the channel on the outer sidewall of the spline shaft, so that the spline shaft rotates circumferentially, and the spline shaft can also move axially in the ball spline sleeve, the two ends of the spline shaft extending out of the gear box are output shafts, so that the axial free expansion of the output shaft is realized, the rotation and expansion of the spline shaft as the output shaft are independent of each other, and the rotation of the spline shaft does not affect the axial displacement of the output shaft. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other purposes and results of the utility model will be more apparent and easy to understand through the following description in combination with the drawings and with a more comprehensive understanding of the utility model. In the drawings:

[0021] Figure 1 FIG. 1 is a schematic view of the internal structure of the gear transmission device according to an embodiment of the utility model;

[0022] Figure 2 FIG. 2 is a schematic view of the A-A direction structure of the gear transmission device according to the embodiment of the utility model; Figure 1

[0023] Figure 3 FIG. 3 is another schematic view of the internal structure of the gear transmission device according to the embodiment of the utility model;

[0024] Figure 4 FIG. 4 is a schematic view of the structure of the spline shaft according to the embodiment of the utility model;

[0025] Figure 5 FIG. 5 is a schematic view of the end surface structure of the spline shaft according to the embodiment of the utility model; ​

[0026] Figure 6 This is a schematic diagram of the internal structure of a gear transmission device when the active transmission mechanism is a two-stage transmission mechanism according to an embodiment of the present utility model.

[0027] Figure 7 This is a schematic diagram of the internal structure of another gear transmission device when the active transmission mechanism is a two-stage transmission mechanism according to an embodiment of the present utility model.

[0028] Figure 8 This is a schematic diagram of the external structure of a gear transmission device according to an embodiment of the present utility model.

[0029] In the attached drawings, 1-gearbox body, 11-box body, 12-box cover, 13-first end cover, 14-second end cover, 21-drive bearing, 211-first drive bearing, 212-second drive bearing, 22-drive shaft, 221-first drive shaft, 222-second drive shaft, 23-drive gear, 231-first drive gear, 232-second drive gear, 24-intermediate driven gear, 31-driven gear, 32-driven hollow shaft, 33-ball spline sleeve, 331-ball, 34-spline shaft, 341-groove, 35-driven bearing, 36-first limiting connector, 37-second limiting connector, 38-fixing ring, 381-fixing plate, 4-retaining ring.

[0030] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0031] In response to the aforementioned issue, existing gearboxes in the prior art can generally only transmit torque, meaning the output shaft only rotates and typically does not have axial extension or retraction capabilities. For specific applications that require both shaft rotation and axial displacement, axial movement needs to be achieved by combining with other mechanisms, which results in problems such as large space requirements and increased structural complexity. Therefore, a gear transmission device is proposed.

[0032] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] To illustrate the gear transmission device provided by this utility model Figure 1 The internal structure of the gear transmission device according to an embodiment of the present invention is shown; Figure 2 It shows Figure 1 AA-shaped structure; Figure 3 Another internal structure of the gear transmission device according to an embodiment of the present invention is shown; Figure 4 The structure of the spline shaft according to an embodiment of the present invention is shown; Figure 5 The end face structure of the spline shaft according to an embodiment of the present invention is shown; Figure 6The internal structure of the gear transmission device when the driving transmission mechanism is a two-stage transmission mechanism is shown. Figure 7 The internal structure of another gear transmission device when the driving transmission mechanism is a two-stage transmission mechanism is shown. Figure 8 The external structure of the gear transmission device is shown.

[0034] As shown in Figures 1 to 8 The gear transmission device provided by the utility model, a gear box, a driving transmission mechanism and a driven transmission mechanism are shown.

[0035] The driving bearing seat and the driven bearing seat are arranged in the gear box 1.

[0036] The driving transmission mechanism comprises a driving shaft 22 horizontally mounted on the driving bearing seat through a driving bearing 21 and a driving gear 23 sleeved on the outer periphery of the driving shaft 22; the shaft end of the driving shaft 22 is arranged outside the gear box 1 and is connected with a prime mover.

[0037] The driven transmission mechanism comprises a driven gear 31 engaged with the driving gear 23, a driven hollow shaft 32 penetrating the inside of the driven gear 31, a ball spline sleeve 33 arranged in the inside of the driven hollow shaft 32 and a spline shaft 34 penetrating the inside of the ball spline sleeve 33; wherein,

[0038] The driven hollow shaft 32 is horizontally mounted on the driven bearing seat through a driven bearing 35; the inner side wall of the driven gear 31 and the outer side wall of the driven hollow shaft 32 are connected through a first limiting connecting piece 36; the two ends of the ball spline sleeve 33 are respectively connected with the two ends of the driven hollow shaft 32; the inner side wall of the driven hollow shaft 32 and the outer side wall of the ball spline sleeve 33 are connected through a second limiting connecting piece 37; the channel 341 on the outer side wall of the spline shaft 34 is matched with the ball 331 on the inner side wall of the ball spline sleeve 33.

[0039] The prime mover is not shown in the utility model and is a driving device in a mechanical equipment, which can be a motor and the like and is used for transmitting power to the driving shaft 22, and the utility model does not specially limit this.

[0040] The driving bearing seat and the driven bearing seat in the utility model are not shown in the drawing and are structures for mounting the driving bearing seat and the driven bearing seat; in order to ensure that the driving shaft 22 and the driven hollow shaft 32 rotate stably in the gear box 1, the driving bearing seat and the driven bearing seat are both two and are correspondingly arranged at the two ends of the driving shaft 22 and the driven hollow shaft 32.

[0041] The spline shaft 34 and the ball spline sleeve 33 are in rolling friction, the spline shaft 34 can move in the axial direction at a high speed, operation is stable, and abrasion is small.

[0042] When in use, the prime mover inputs power to the driving shaft 22, the driving shaft 22 rotates at a high speed to drive the driving gear 23 to rotate, the driving gear 23 transmits torque to the driven gear 31 to drive the driven gear 31 to rotate, the driven gear 31 drives the driven hollow shaft 32 to rotate through the first limiting connecting piece 36, the driven hollow shaft 32 drives the ball spline sleeve 33 to rotate through the second limiting connecting piece 37, the ball spline sleeve 33 drives the spline shaft 34 to rotate through the cooperation between the spline (ball 331) and the channel 341 on the outer side wall of the spline shaft 34, the spline shaft 34 can also move in the axial direction in the ball spline sleeve 33, and the two ends of the spline shaft 34 extending out of the gear box body 1 are output shafts, so that the axial free expansion of the output shaft is realized, the rotation and expansion of the spline shaft 34 as the output shaft are independent of each other, and the rotation of the spline shaft 34 does not affect the axial displacement of the output shaft.

[0043] As a preferred scheme of the utility model, the ball spline sleeve 33 is a cylindrical structure; fixed sleeves 38 are arranged at the two ends of the ball spline sleeve 33; one end of the fixed sleeve 38 is butted with the end of the ball spline sleeve 33, and the other end is provided with a fixed sheet 381 perpendicularly; and the fixed sheet 381 is fixedly connected with the end of the driven hollow shaft 32 through a bolt.

[0044] As shown in Figure 1 , the end of the ball spline sleeve 33 is fixed with the end of the driven hollow shaft 32 through the fixed sleeve 38, so that the ball spline sleeve 33 can be better driven to rotate by the driven hollow shaft 32.

[0045] As a preferred scheme of the utility model, the ball spline sleeve 33 is a flange type cylindrical structure; and the end of the ball spline sleeve 33 is connected with the end of the driven hollow shaft 32 through a bolt.

[0046] As shown in Figure 3 , the ball spline sleeve 33 also adopts a flange type structure and is directly connected with the end of the driven hollow shaft 32 through a bolt.

[0047] As a preferred scheme of the utility model, the first limiting connecting piece 36 is a flat key or a spline; and / or, the second limiting connecting piece 37 is a flat key or a spline.

[0048] Specifically, the driven gear 31 and the driven hollow shaft 32 can be connected by means of spline, key or interference fit, as long as the driven gear 31 can drive the driven hollow shaft 32 to rotate.

[0049] As a preferred scheme of the utility model, first end covers 13 are arranged on the gear box body 1 at both ends of the driving shaft 22; the first end covers 13 are fixed on the gear box body 1 through bolts; wherein the first end cover 13 at the shaft end of the driving shaft 22 is provided with a shaft end extension hole; and or;

[0050] Second end covers 14 are arranged on the gear box body 1 at both ends of the driven hollow shaft 32; the second end covers 14 are fixed on the gear box body 1 through bolts; the driven hollow shaft extension holes are arranged on the second end covers 14.

[0051] Through the arrangement of the end cover, the replacement of the driving transmission mechanism and the driven transmission mechanism is facilitated.

[0052] As a preferred scheme of the utility model, the driving transmission mechanism is a one-stage transmission mechanism or a multi-stage transmission mechanism.

[0053] Specifically, the driving transmission mechanism can be a one-stage transmission mechanism, such as shown in Figure 1 and Figure 3 , or a multi-stage transmission mechanism, for example, two stages, three stages, four stages, etc.

[0054] As a preferred scheme of the utility model, the driving transmission mechanism is a two-stage transmission mechanism; the driving bearing seat comprises a first driving bearing seat and a second driving bearing seat; the driving shaft 22 comprises a first driving shaft 221 horizontally installed on the first driving bearing seat through a first driving bearing 211 and a second driving shaft 222 horizontally installed on the second driving bearing seat through a second driving bearing 212; the driving gear 23 comprises a first driving gear 231 sleeved on the outer periphery of the first driving shaft 221 and a second driving gear 232 sleeved on the outer periphery of the second driving shaft 222; wherein the intermediate driven gear 24 engaged with the first driving gear 231 is sleeved on the outer periphery of the second driving shaft 222; the shaft end of the first driving shaft 221 is arranged outside the gear box body 1 and connected with the prime mover, and the second driving gear 222 is engaged with the driven gear 31.

[0055] As shown in Figure 6 and Figure 7 , when the driving transmission mechanism is a two-stage transmission mechanism, the intermediate driven gear 24 engaged with the first driving gear 231 is added on the intermediate shaft (second driving shaft 222), and more levels of transmission mechanisms can be realized in this way.

[0056] As an optimal scheme of the utility model, the first driving shaft 221 is parallel with the second driving shaft 222 or the first driving shaft 221 is arranged at an angle with the second driving shaft 222.

[0057] As shown in the figure, Figure 6 The first driving shaft 221 is parallel with the second driving shaft 222, at this time, the gear box 1 is a cylindrical gear box. Of course, the first driving shaft 221 can also be arranged at an angle with the second driving shaft 222, for example, as shown in the figure, Figure 7 The first driving shaft 221 is perpendicular to the second driving shaft 222, at this time, the intermediate driven gear 24 is an intermediate bevel gear, the first driving gear 231 is a driving bevel gear, and the gear box 1 is a conical-cylindrical gear box. The driving transmission mechanism in the utility model can also adopt more stages of gear transmission according to different transmission ratio requirements and structural types.

[0058] As an optimal scheme of the utility model, the driving shaft 22 and the driving gear 23 are of an integral structure. The driving gear 23 and the driving shaft 22 can be made into an integral, that is, the driving shaft 22 can be a high-speed gear shaft.

[0059] As an optimal scheme of the utility model, the gear box 1 comprises a box body 11 and a box cover 12 arranged at the top of the box body 11.

[0060] Specifically, the gear box 1 comprises a box body 11 and a box cover 12 arranged at the top of the box body 11, which is convenient for the internal structure to be overhauled and the like, at this time, the upper and lower ends of the end cover are connected with the box cover 12 and the box body respectively through bolts, as shown in the figure. Figure 8

[0061] The retainer 4 is arranged on the outer periphery of the driven hollow shaft 32 and is located between the driven bearing 35 and the driven gear 31, so that the driven hollow shaft 32 rotates more stably.

[0062] ​It can be seen from the above specific embodiment that the gear transmission device has the advantages that the gear box, the driving transmission mechanism and the driven transmission mechanism are structurally designed, in use, the prime mover inputs power to the driving shaft, the driving shaft rotates at high speed to drive the driving gear to rotate, the driving gear transmits torque to the driven gear meshed with the driving gear to drive the driven gear to rotate, the driven gear drives the driven hollow shaft to rotate through the first limiting connecting piece, the driven hollow shaft drives the ball spline sleeve to rotate through the second limiting connecting piece, the ball spline sleeve is matched between the spline (ball) and the channel on the outer sidewall of the spline shaft, the spline shaft rotates together in the circumferential direction, the spline shaft can also move in the axial direction in the ball spline sleeve, the two ends of the spline shaft extending out of the gear box are output shafts, so that the axial free expansion of the output shaft is realized, the rotation and expansion of the spline shaft as the output shaft are independent of each other, the rotation of the spline shaft does not affect the axial displacement of the output shaft, the gear transmission device is applied to a specific application occasion requiring rotation and axial displacement of the shaft, axial movement is realized without being combined with other mechanisms, and the gear transmission device has the advantages of small occupied space and simple structure.

[0063] The gear transmission device according to the utility model is described above with reference to the drawings in an exemplary manner. However, it should be understood by those skilled in the art that various improvements can be made to the gear transmission device according to the utility model described above without departing from the content of the utility model. Therefore, the protection scope of the utility model should be determined by the content of the appended claims.

Claims

1. A gear transmission device, characterized by, The gear transmission device comprises a gear box, a driving transmission mechanism and a driven transmission mechanism. A driving bearing seat and a driven bearing seat are arranged in the gear box. The driving transmission mechanism comprises a driving shaft horizontally mounted on the driving bearing seat through a driving bearing and a driving gear sleeved on the outer periphery of the driving shaft. The driven transmission mechanism comprises a driven gear engaged with the driving gear, a driven hollow shaft penetrating the driven gear, a ball spline sleeve arranged in the driven hollow shaft and a spline shaft penetrating the ball spline sleeve. The driven hollow shaft is horizontally mounted on the driven bearing seat through a driven bearing. The inner side wall of the driven gear is connected with the outer side wall of the driven hollow shaft through a first limiting connecting piece. The two ends of the ball spline sleeve are respectively connected with the two ends of the driven hollow shaft. The inner side wall of the driven hollow shaft is connected with the outer side wall of the ball spline sleeve through a second limiting connecting piece. The groove on the outer side wall of the spline shaft is matched with the ball on the inner side wall of the ball spline sleeve.

2. The gear transmission device according to claim 1, wherein The ball spline sleeve is a cylindrical structure. A fixed sleeve ring is arranged at the two ends of the ball spline sleeve. A fixed sheet is arranged at one end of the fixed sleeve ring. The fixed sheet is fixedly connected with the end of the driven hollow shaft through a bolt.

3. The gear transmission device according to claim 1, wherein The ball spline sleeve is a flange type cylindrical structure. The end of the ball spline sleeve is connected with the end of the driven hollow shaft through a bolt.

4. The gear transmission device according to claim 1, wherein The first limiting connecting piece is a flat key or a spline; and / or The second limiting connecting piece is a flat key or a spline.

5. The gear transmission device according to claim 1, wherein A first end cover is arranged at each end of the driving shaft on the gear box. The first end cover is fixed on the gear box through a bolt. A driven hollow shaft extension hole is arranged on the second end cover.

6. The gear transmission device according to claim 1, wherein The driving transmission mechanism is a one-stage transmission mechanism or a multi-stage transmission mechanism.

7. The gear transmission device according to claim 6, wherein The driving transmission mechanism is a two-stage transmission mechanism. The driving bearing seat comprises a first driving bearing seat and a second driving bearing seat. The driving shaft comprises a first driving shaft horizontally mounted on the first driving bearing seat through a first driving bearing and a second driving shaft horizontally mounted on the second driving bearing seat through a second driving bearing. The driving gear comprises a first driving gear sleeved on the outer periphery of the first driving shaft and a second driving gear sleeved on the outer periphery of the second driving shaft; wherein, An intermediate driven gear is sleeved on the outer periphery of the second driving shaft and engaged with the first driving gear; the shaft end of the first driving shaft is arranged outside the gear box and connected with the prime mover, and the second driving gear is engaged with the driven gear.

8. The gear transmission device according to claim 7, characterized in that, The first driving shaft is arranged in parallel with the second driving shaft or at an angle therebetween.

9. The gear transmission device according to claim 1, characterized in that, The driving shaft and the driving gear are in an integral structure.

10. The gear transmission device according to claim 1, characterized in that, The gear box comprises a box body and a box cover arranged on the top of the box body.

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