CN210715770U

CN210715770U - Speed reducer

Info

Publication number: CN210715770U
Application number: CN201921746805.5U
Authority: CN
Inventors: 洪成川
Original assignee: Wenzhou Naibao Machinery Manufacturing Co ltd
Current assignee: Wenzhou Naibao Machinery Manufacturing Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-06-09
Anticipated expiration: 2029-10-17

Abstract

The utility model relates to a speed reducer, which comprises a bod, be provided with the installation cavity in the organism, be provided with input shaft and output shaft in the installation cavity, be provided with the transfer line in the installation cavity and the subassembly that slides, the subassembly that slides sets up in the installation cavity, the transfer line sets up in the subassembly that slides, be provided with the one-level pinion on the input shaft, be provided with the one-level gear wheel on the transfer line, the output shaft is provided with first second gear wheel and second level gear wheel, be provided with first second level pinion and second level pinion on the transfer line, when first second level gear wheel and first second level pinion mesh, second level gear wheel and second level pinion non-meshing, when second level gear wheel and second level pinion mesh, first second level gear wheel and first. By adopting the scheme, the input shaft and the output shaft are connected through the transmission rod, and the transmission rod can slide along the axial direction to realize the meshing of different secondary gears, so that the speed reducer with a plurality of transmission ratios of the same speed reducer is realized.

Description

Speed reducer

Technical Field

The utility model relates to a transmission, concretely relates to speed reducer.

Background

The speed reducer is used for low-speed and large-torque transmission equipment, and the purpose of reducing speed is achieved by meshing a motor, an internal combustion engine or other high-speed running power with a large gear on an output shaft through a gear with a small number of teeth on an input shaft of the speed reducer.

The existing speed reducer comprises a machine body, a mounting cavity is formed in the machine body, an input shaft and an output shaft are arranged in the mounting cavity in a rotating mode, a pinion is fixedly arranged on the input shaft, a gear wheel is fixedly arranged on the output shaft, and the pinion and the gear wheel are connected in a meshed mode. Therefore, the transmission ratio of the existing set speed reducer is a fixed value, so that one speed reducer can only realize the output of the fixed transmission ratio and cannot realize that the same speed reducer has a plurality of transmission ratios to realize wider transmission control.

Disclosure of Invention

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a connect input shaft and output shaft through the transfer line, thereby and the transfer line can realize along the meshing that different secondary gear's slip realized that same speed reducer has a plurality of drive ratios.

In order to achieve the above purpose, the utility model provides a following technical scheme: the gear transmission mechanism comprises a machine body, wherein a mounting cavity is arranged in the machine body, an input shaft and an output shaft are rotatably arranged in the mounting cavity, a transmission rod and a sliding assembly are arranged in the mounting cavity, the input shaft, the output shaft and the transmission rod are axially arranged in parallel, the sliding assembly is arranged in the mounting cavity in a sliding manner along the axial direction of the transmission rod, the transmission rod is arranged in the sliding assembly along the circumferential rotation direction, a first-stage pinion is fixedly arranged on the input shaft, a first-stage gearwheel meshed with the first-stage pinion is fixedly arranged on the transmission rod, a first second-stage gearwheel and a second-stage gearwheel are axially arranged on the output shaft, a first second-stage pinion meshed with the first second-stage gearwheel and a second-stage pinion meshed with the second-stage gearwheel are fixedly arranged on the transmission rod, and when, the second-stage bull gear and the second-stage pinion gear are in a non-meshing state, and when the second-stage bull gear is meshed with the second-stage pinion gear, the first-stage bull gear and the first-stage pinion gear are in a non-meshing state.

By adopting the technical scheme, 1, the input shaft and the output shaft are connected through the transmission rod, so that the meshing of the first-stage pinion and the first-stage gearwheel and the meshing of one pair of second-stage pinions and the second-stage gearwheel can be realized, the transmission ratio is further increased, and the deceleration effect is better; 2. the transmission rod can be driven to slide along the axial direction through the sliding of the sliding component, so that the first secondary pinion and the first secondary gearwheel are driven to be meshed or the second secondary pinion and the second secondary gearwheel are driven to be meshed, therefore, the transmission ratios under different matching can be completed by using secondary gears with different sizes, and the situation that a single speed reducer is different in adaptation of the plurality of transmission ratios is achieved.

The utility model discloses further set up to: the sliding assembly comprises a first sliding block, a second sliding block, a first bearing and a second bearing, the first sliding block and the first bearing are arranged at one axial end of the transmission rod, the inner ring side of the first bearing is fixedly connected with the periphery of the transmission rod, the outer ring side of the first bearing is fixedly connected with the first sliding block, a first sliding track for the first sliding block to slide along the axial direction of the transmission rod is arranged in the installation cavity, the second sliding block and the second bearing are arranged at the other axial end of the transmission rod, the inner ring side of the second bearing is fixedly connected with the periphery of the transmission rod, the outer ring side of the second bearing is fixedly connected with the second sliding block, and a second sliding track for the second sliding block to slide along the axial direction of the transmission rod is arranged in the installation cavity.

By adopting the technical scheme, 1, the first sliding block and the second sliding block are arranged at the two axial ends of the transmission rod, so that the transmission rod is supported at the two ends, and the phenomenon of clamping caused by slippage due to the formation of a large bending moment at the end part of the transmission rod is prevented; 2. the arrangement of the first bearing and the second bearing realizes that the transmission rod is circumferentially and rotatably arranged on the first sliding block and the second sliding block, so that the rotation is smoother; 3. the first track that slides and the orbital setting that slides of second, then the sliding of adaptation transfer line plays the guide effect that slides for the position adjustment of transfer line is more stable.

The utility model discloses further set up to: the first sliding block penetrates through a first mounting rail matched with the shape and size of the first bearing along the axial direction of the first bearing, the first bearing slides and is arranged in the first mounting rail, the first mounting rail is located on the side, facing the second sliding block, of the first bearing and is provided with a first positioning ring, the first mounting rail is located on the side, facing the second sliding block, of the first bearing and is provided with a first positioning block, the second sliding block penetrates through a second mounting rail matched with the shape and size of the second bearing along the axial direction of the second bearing and is arranged in the second mounting rail, the second mounting rail is located on the side, facing the first sliding block, of the second bearing and is provided with a second positioning ring, and the second mounting rail is located on the side, facing the first sliding block, of the second bearing and is provided with a second positioning block.

By adopting the technical scheme, 1, the first bearing and the second bearing slide in the corresponding mounting tracks through the first mounting track and the second mounting track to realize radial limit of the bearing; 2. the first positioning ring and the second positioning ring and the first positioning block and the second positioning block are arranged to clamp the bearing at two axial ends of the corresponding bearing, so that the bearing is axially limited, and the bearing is stably arranged in the corresponding sliding block.

The utility model discloses further set up to: the first locating block slides along the track direction of the first mounting track and is arranged on the first mounting track, a first rubber ring is arranged between the first locating block and the first bearing in an extrusion mode, the second locating block slides along the track direction of the second mounting track and is arranged on the second mounting track, and a second rubber ring is arranged between the second locating block and the second bearing in an extrusion mode.

By adopting the technical scheme, 1, the first positioning block and the second positioning block are arranged along the corresponding mounting rails in a sliding manner, so that the corresponding bearings can be positioned more closely by adjusting the positions of the positioning blocks; 2. the first rubber ring and the second rubber ring are arranged, the first positioning block and the second positioning block can be matched to slide, and the effective extrusion positioning effect of each positioning block on the corresponding bearing is realized by the elasticity of rubber, so that the situation that the transmission rod shakes to influence the matching due to the looseness of the bearing is prevented.

The utility model discloses further set up to: an internal thread is arranged in the first sliding track along the track direction, an external thread matched with the internal thread is arranged on the periphery of the first sliding block, a driving outlet is formed in the first sliding track in a mode of penetrating through the machine body along the side deviating from the second sliding track, and a driving rotating button for driving the first sliding block to rotate is arranged on the first sliding block towards the driving outlet side.

By adopting the technical scheme, 1, the sliding of the first sliding block along the first sliding track is driven in a threaded rotation mode by arranging the internal thread in the first sliding track and matching with the external thread of the first sliding block, so that the first sliding block cannot continuously slide due to the action of the thread after the driving is stopped, and the fixing action is kept; 2. the arrangement of the driving outlet enables the driving rotating button to extend to the outside of the machine body, so that a user can drive the gear shifting machine to shift gears.

The utility model discloses further set up to: the second sliding track is arranged on the side, deviating from the first sliding block, of the second sliding block and is provided with a spring, the spring is in a compression arrangement, one end of the spring abuts against the machine body, and the other end of the spring abuts against the second sliding block.

Through adopting above-mentioned technical scheme, the setting of spring for first sliding block, transfer line and second sliding block receive the effort of spring along the direction that resets always, thereby reduce the condition of rocking of transfer line in the use, make work stability more.

The utility model discloses further set up to: the second track that slides runs through the organism and is provided with the constant voltage through-hole, the constant voltage through-hole is located the second track that slides and deviates from first track side that slides along the track direction.

Through adopting above-mentioned technical scheme, because set up the drive export on the first track that slides to guarantee that the slippage of first sliding block in first track that slides can not produce pressure differential and influence the smoothness nature that slides, and the setting of constant voltage through-hole has then eliminated the slippage of second sliding block in the second track that slides and the pressure differential that produces, makes more smooth of sliding.

The invention is further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a diagram illustrating a state of use of an embodiment of the present invention;

FIG. 2 is a diagram illustrating a state of use of an embodiment of the present invention;

FIG. 3 is an enlarged view of A in FIG. 1;

fig. 4 is an enlarged view of B in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the present invention discloses a speed reducer, which comprises a machine body 1, a mounting cavity 11 is formed in the machine body 1, an input shaft 32, an output shaft, a transmission rod 4 and a sliding component 5 are arranged in the mounting cavity 11, wherein the input shaft 32 is positioned on the right side and rotatably arranged on the machine body 1 in a bearing manner, the input shaft 32 is arranged to penetrate through the machine body 1 towards the right side, an input end 21 for connecting with input equipment such as a motor is arranged on the outer side of the machine body 1, the output shaft is positioned on the left side and rotatably arranged on the machine body 1 in a bearing manner, the output shaft is arranged to penetrate through the machine body 1 towards the left side, an output end 31 for connecting with output equipment is arranged on the outer side of the machine body 1, the transmission rod 4 is positioned at the lower ends of the input shaft 32 and the output shaft, the axial directions of the three are parallel to, the transmission rod 4 is arranged on the sliding component 5 in a circumferential rotating way, a first-level pinion 22 is fixedly arranged on the periphery of the left end of the input shaft 32 in a key connection way, an integral forming way and the like, a first-level gearwheel 41 meshed with the first-level pinion 22 is fixedly arranged on the periphery of the right side of the transmission rod 4 in the key connection way and the like, so that the input shaft 32 is linked with the transmission rod 4 through the meshed connection of the pinion and the gearwheel, the left end of the output shaft is provided with a first second-level gearwheel 32 and a second-level gearwheel 33 which are different in gear in an axial arrangement way in the key connection way and the like, correspondingly, a first second-level pinion 42 and a second-level pinion 43 are fixedly arranged on the transmission rod 4 in the integral forming way and the like, wherein the first second-level pinion 42 can be meshed with, the second-stage pinion 43 can be engaged with or disengaged from the second-stage gearwheel 33 in the process that the transmission rod 4 slides in the axial direction, and as the arrangement of the position intervals in the drawing, in fig. 1, the first second-stage gearwheel 32 is engaged with the first second-stage pinion 42, the second-stage gearwheel 33 and the second-stage pinion 43 are in a non-engaged state, in fig. 2, the second-stage gearwheel 33 is engaged with the second-stage pinion 43, and the first second-stage gearwheel 32 and the first second-stage pinion 42 are in a non-engaged state. Therefore, the gears with different secondary sizes are meshed by the slippage of the transmission rod 4, so that the gear combination building with different transmission ratios is completed, and the use is wider.

Referring to fig. 3-4, the sliding assembly 5 in this embodiment includes a first sliding block 51, a second sliding block 52, a first bearing 53 and a second bearing 54, the first sliding block 51 and the first bearing 53 are located at the right end of the transmission rod 4 in the axial direction, the inner ring side of the first bearing 53 is in interference fit with the outer circumference of the right side of the transmission rod 4 in the axial direction, a first installation rail 511 matching the outer ring side of the first bearing 53 is coaxially disposed in the first sliding block 51, and the first installation rail 511 penetrates through both sides of the first sliding block 51 in the rail direction, so that the first bearing 53 can be installed in the first installation rail 511 in an interference fit manner to achieve the rotation of the transmission rod 4 in the first sliding block 51, in addition, the machine body 1 is provided with a first sliding rail 12 matching the shape and size of the first sliding block 51 in the installation cavity 11, and the rail direction of the first sliding rail 12 matches the axial direction of the transmission rod 4, so that the first sliding block 51 is slidably disposed in the first sliding rail 12 to realize axial sliding of the transmission rod 4, similarly, the second sliding block 52 and the second bearing 54 are located at the axial left end of the transmission rod 4, the inner ring side of the second bearing 54 is in interference fit with the periphery of the axial left side of the transmission rod 4, the second sliding block 52 is coaxially provided with a second mounting rail 521 adapted to the outer ring side of the second bearing 54 in shape and size, and the second mounting rail 521 penetrates through two sides of the second sliding block 52 along the rail direction, so that the second bearing 54 can be installed in the second mounting rail 521 in interference fit to realize that the transmission rod 4 is rotatably mounted on the second sliding block 52, in addition, the machine body 1 is provided with a second sliding rail 13 adapted to the shape and size of the second sliding block 52 in the mounting cavity 11, and the rail direction of the second sliding rail 13 is adapted to the axial direction of the transmission rod 4, so that the second sliding block 52 is slidably disposed in the second sliding rail 13 to realize axial sliding of the transmission rod 4 And the sliding is realized, and the two ends are supported in an auxiliary way, so that the axial sliding of the transmission rod 4 is more stable and smooth.

Preferably, in this embodiment, the first mounting rail 511 is provided with a first positioning ring 512 at the left end of the shaft, and the first positioning ring 512 is integrally formed with the first sliding block 51, in addition, a first positioning block 513 is provided in the first mounting rail 511 at the side of the first bearing 53 away from the second sliding block 52, wherein the shape and size of the first positioning block 513 are matched with the shape and size of the first mounting rail 511, so that the first positioning block 513 can push and press the first bearing 53 toward the first positioning ring 512 side along the rail direction to realize that the first bearing 53 is effectively mounted in the first mounting rail 511, and then the first positioning block 513 is welded, screwed and the like to realize the fixing of the first sliding block 51, similarly, the second mounting rail 521 is provided with a second positioning ring 522 integrally formed with the second sliding block 52 at the right end of the shaft, and a second positioning ring 522 having a shape and size opposite to the first sliding block 51 side is provided in the second mounting rail 521 at the side of the second bearing 54 away from the first sliding block 51 The first positioning block 513 is installed on the rail 511, and the first positioning block 513 is fixed to the first sliding block 51 by welding, screwing, or the like.

Preferably, in the present embodiment, a first rubber ring 514 is disposed between the first positioning block 513 and the first bearing 53 in a pressing manner, and a second rubber ring 524 is disposed between the second positioning block 523 and the second bearing 54 in a pressing manner. Therefore, the effective extrusion positioning action of each positioning block on the corresponding bearing is realized by utilizing the elasticity of the rubber.

In addition, in the first sliding rail 12 in this embodiment, an internal thread 121 is arranged along the rail direction, and an external thread 515 in threaded fit with the internal thread 121 is arranged on the periphery of the first sliding block 51 facing the right side, so that the first sliding block 51 is axially slid and positioned in the first sliding rail 12 through threaded rotation, thereby completing position adjustment, in order to enable a user to drive more conveniently, the first sliding rail 12 penetrates through the machine body 1 along the side away from the second sliding rail 13 and is provided with a driving outlet 122, and the first sliding block 51 is welded with a driving rotating knob 516 driving the first sliding block 51 to rotate towards the driving outlet 122, so that the user can control the first sliding block 51 through the driving rotating knob 516, thereby controlling the axial sliding of the transmission rod 4 to realize gear shifting.

In addition, a spring 55 is disposed in the second sliding track 13 on the left side of the second sliding block 52 in the embodiment, wherein the spring 55 is in a compressed state, the left end abuts against the machine body 1, and the right end abuts against the second sliding block 52, so that the second sliding block 52 always receives a force to the right under the action of the spring 55, thereby preventing the transmission rod 4 from shaking to a certain extent.

In addition, a constant pressure through hole 131 connected with the outside is formed through the machine body 1 on the left side of the second sliding rail 13 in this embodiment, so that the pressure inside the second sliding rail 13 does not change along with the movement of the second sliding block 52 under the action of the constant pressure through hole 131, thereby preventing the influence of the pressure on the sliding fluency of the second sliding block 52.

Claims

1. The utility model provides a speed reducer, includes the organism, be provided with the installation cavity in the organism, the installation cavity internal rotation is provided with input shaft and output shaft, its characterized in that: the transmission mechanism is characterized in that a transmission rod and a sliding component are arranged in the installation cavity, the input shaft, the output shaft and the transmission rod are arranged in parallel in the axial direction, the sliding component is arranged in the installation cavity in a sliding manner along the axial direction of the transmission rod, the transmission rod is arranged in the sliding component in a circumferential rotation manner, a first-stage pinion is fixedly arranged on the input shaft, a first-stage bull gear meshed with the first-stage pinion is fixedly arranged on the transmission rod, a first second-stage bull gear and a second-stage bull gear are axially arranged on the output shaft, a first second-stage pinion meshed with the first second-stage bull gear and a second-stage pinion meshed with the second-stage bull gear are fixedly arranged on the transmission rod, when the first second-stage bull gear is meshed with the first second-stage pinion, the second-stage bull gear and the second-stage, the first secondary bull gear and the first secondary pinion gear are in a non-meshed state.

2. A reducer according to claim 1, wherein: the sliding assembly comprises a first sliding block, a second sliding block, a first bearing and a second bearing, the first sliding block and the first bearing are arranged at one axial end of the transmission rod, the inner ring side of the first bearing is fixedly connected with the periphery of the transmission rod, the outer ring side of the first bearing is fixedly connected with the first sliding block, a first sliding track for the first sliding block to slide along the axial direction of the transmission rod is arranged in the installation cavity, the second sliding block and the second bearing are arranged at the other axial end of the transmission rod, the inner ring side of the second bearing is fixedly connected with the periphery of the transmission rod, the outer ring side of the second bearing is fixedly connected with the second sliding block, and a second sliding track for the second sliding block to slide along the axial direction of the transmission rod is arranged in the installation cavity.

3. A reducer according to claim 2, wherein: the first sliding block penetrates through a first mounting rail matched with the shape and size of the first bearing along the axial direction of the first bearing, the first bearing slides and is arranged in the first mounting rail, the first mounting rail is located on the side, facing the second sliding block, of the first bearing and is provided with a first positioning ring, the first mounting rail is located on the side, facing the second sliding block, of the first bearing and is provided with a first positioning block, the second sliding block penetrates through a second mounting rail matched with the shape and size of the second bearing along the axial direction of the second bearing and is arranged in the second mounting rail, the second mounting rail is located on the side, facing the first sliding block, of the second bearing and is provided with a second positioning ring, and the second mounting rail is located on the side, facing the first sliding block, of the second bearing and is provided with a second positioning block.

4. A reducer according to claim 3, wherein: the first locating block slides along the track direction of the first mounting track and is arranged on the first mounting track, a first rubber ring is arranged between the first locating block and the first bearing in an extrusion mode, the second locating block slides along the track direction of the second mounting track and is arranged on the second mounting track, and a second rubber ring is arranged between the second locating block and the second bearing in an extrusion mode.

5. A reducer according to claim 2, wherein: an internal thread is arranged in the first sliding track along the track direction, an external thread matched with the internal thread is arranged on the periphery of the first sliding block, a driving outlet is formed in the first sliding track in a mode of penetrating through the machine body along the side deviating from the second sliding track, and a driving rotating button for driving the first sliding block to rotate is arranged on the first sliding block towards the driving outlet side.

6. A reducer according to claim 5, wherein: the second sliding track is arranged on the side, deviating from the first sliding block, of the second sliding block and is provided with a spring, the spring is in a compression arrangement, one end of the spring abuts against the machine body, and the other end of the spring abuts against the second sliding block.

7. A reducer according to claim 2, wherein: the second track that slides runs through the organism and is provided with the constant voltage through-hole, the constant voltage through-hole is located the second track that slides and deviates from first track side that slides along the track direction.