CN213685164U - Linear actuator - Google Patents
Linear actuator Download PDFInfo
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- CN213685164U CN213685164U CN202022170948.5U CN202022170948U CN213685164U CN 213685164 U CN213685164 U CN 213685164U CN 202022170948 U CN202022170948 U CN 202022170948U CN 213685164 U CN213685164 U CN 213685164U
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- shell
- lead screw
- linear guide
- linear actuator
- guide rail
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Abstract
The utility model discloses a straight line execution action ware, including shell, linear guide, slider, lead screw and screw nut, the inside installation cavity that has of shell, linear guide and lead screw are installed in the internal installation cavity of shell along shell length direction, and slider slidable mounting is on this linear guide, and the both ends internally mounted of shell has the bearing, the both ends of lead screw are erect in the bearing of bearing, and screw nut installs on the lead screw and with slider fixed connection, has seted up a passageway along its length direction on the shell, and this screw nut sees through this passageway and is connected with the mounting panel in the shell outside, and this mounting panel is used for connecting driven target article. The utility model discloses an integrated design, compact structure, appearance and volume are regular to have the horizontal regulatory function of linear guide and the vertical regulatory function of bearing, thereby the depth of parallelism between regulation linear guide and the lead screw that can be convenient, with the good smooth and easy degree of assurance straight line execution actor during operation.
Description
Technical Field
The utility model belongs to the technical field of drive mechanism, concretely relates to straight line execution action ware.
Background
A linear actuator is a mechanical transmission device commonly used in industry, and generally, when an electric motor rotates and drives a lead screw to operate, a ball nut on a shaft rotates along the lead screw, so that a rotary motion is converted into a linear motion.
The existing linear actuator is not compact enough in structure and regular in size, and key components such as a linear guide rail, a sliding block, a lead screw nut and a bearing support are often directly exposed in the environment, so that environmental dust pollution is easily received, and the safety protection level is low. In addition, the assembly parallelism between the linear guide rail and the lead screw cannot be guaranteed, so that the linear actuator is not smooth enough in operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a straight line execution action ware, it adopts the integrated design, compact structure, and appearance and volume are regular, and good smooth and easy degree when guaranteeing straight line execution action ware operation is guaranteed to the installation depth of parallelism between regulation lead screw and the linear guide that can be convenient.
The utility model discloses a realize through following technical scheme:
a linear actuator comprises a shell, a linear guide rail, a sliding block, a lead screw and a lead screw nut, wherein the shell is in a long strip shape, an installation cavity is formed in the shell, the linear guide rail and the lead screw are installed in the installation cavity in the shell along the length direction of the shell, and the sliding block is installed on the linear guide rail in a sliding mode; bearing supports are arranged inside two ends of the shell, two ends of the lead screw are erected in bearings of the bearing supports, and the lead screw and the linear guide rail are arranged in parallel; the screw nut is arranged on the screw and fixedly connected with the sliding block, a channel is arranged on the shell along the length direction of the shell, the screw nut is connected with the mounting plate outside the shell through the channel, and the mounting plate is used for connecting a driven target object;
corresponding bolt mounting holes are formed in the bottom surface of the shell and the linear guide rail, the linear guide rail is fixedly mounted on the bottom surface of the shell through bolts, and the diameter of the bolt mounting hole in the bottom surface of the shell is larger than the diameter of the bolt, so that the linear guide rail can be adjusted in position on a transverse plane;
corresponding bolt mounting holes are formed in the side face of the shell and the bearing support, the bearing support is fixedly mounted on the side face of the shell through bolts, and the aperture of the bolt mounting hole in the side face of the shell is larger than the diameter of the bolt, so that the position of the bearing support can be adjusted on a longitudinal plane.
In the above technical solution, the bottom surface of the housing is perpendicular to the side surface of the housing, that is, the mounting surface of the linear guide rail on the housing is perpendicular to the mounting surface of the bearing support on the housing.
In the technical scheme, the bolt mounting holes in the bottom surface of the shell are 1-3mm larger than the diameter of the bolts, and the bolt mounting holes in the side surface of the shell are 1-3mm larger than the diameter of the bolts.
In the technical scheme, the bearings at the two ends of the screw rod adopt self-aligning bearings, so that a certain angular offset adjustment amount can be formed between the screw rod and the bearings, and the adjustment requirement of the parallelism between the screw rod and the linear guide rail during assembly of the screw rod is met.
In the above technical solution, the cross section of the housing is rectangular.
In the technical scheme, the shell is formed by splicing two or more sub-frame plates, and the sub-frame plates are formed by bending flat plates.
In the above technical scheme, a rotary encoder is installed at one end of the shell, and the rotary encoder is connected with the outer end of the lead screw and used for measuring the angular speed of the lead screw and further converting the moving speed and the position of the sliding block.
In the above technical scheme, one end of the lead screw is in transmission connection with a driving motor, the driving motor is fixedly mounted on the shell through a motor support, and the driving motor is a direct current motor or an alternating current motor or a stepping motor or a servo motor.
In the technical scheme, a first belt pulley is installed at one end of the screw rod, a second belt pulley is installed on an output shaft of the driving motor, and the second belt pulley is connected with the first belt pulley through a belt to drive the screw rod.
In the technical scheme, the fixing plate is mounted on the shell, the arc-shaped long-strip-shaped bolt mounting holes are formed in the fixing plate, and the whole linear actuator is mounted at a required position conveniently through the fixing plate by adopting bolts.
The utility model discloses an advantage and beneficial effect do:
the utility model discloses have the horizontal regulatory function of linear guide and the vertical regulatory function of bearing to adjustment linear guide and the depth of parallelism between the lead screw that can be convenient, with the good smooth and easy degree when guaranteeing the straight line execution actor operation.
The utility model discloses an integrated design, the integration degree is high, and whole sharp execution action ware can be convenient transplant.
The utility model discloses compact structure, appearance and volume are regular, and parts such as linear guide, slider, lead screw, screw nut, bearing all install in the internally mounted chamber of shell, and the shell is drawn forth only to the action output, consequently has good closed protection nature.
Drawings
Fig. 1 is a schematic perspective view of a linear actuator according to the present invention.
Fig. 2 is a sectional view of the linear actuator of the present invention.
Fig. 3 is a cross-sectional view of the screw nut of the linear actuator of the present invention.
Fig. 4 is an enlarged schematic view of the linear guide mounting structure of the present invention.
Fig. 5 is an enlarged schematic view of the mounting structure of the bearing support according to the present invention.
Wherein:
1: housing, 2: linear guide, 3: a slide block, 4: a screw rod, 5: screw nut, 6: bearing support, 7: mounting plate, 8: rotary encoder, 9: drive motor, 10: a motor bracket.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Example one
Referring to the attached drawings, the linear actuator comprises a shell 1, a linear guide rail 2, a sliding block 3, a lead screw 4 and a lead screw nut 5.
The shell 1 is long-strip-shaped, a mounting cavity is formed in the shell, the linear guide rail 2 and the lead screw 4 are mounted in the mounting cavity in the shell along the length direction of the shell, and the sliding block 3 is mounted on the linear guide rail 2 in a sliding mode; bearing supports 6 are arranged inside the left end and the right end of the shell, two ends of the lead screw 4 are erected in a bearing 6-1 of each bearing support, and the lead screw 4 and the linear guide rail 2 are arranged in parallel; the screw nut 5 is arranged on the screw 4 and fixedly connected with the sliding block 3, a channel 1-1 is arranged on the shell along the length direction, the screw nut 5 is connected with a mounting plate 7 on the outer side of the shell through the channel 1-1, and the mounting plate 7 is used for connecting a driven target object. When the screw 4 rotates, the screw drives the screw nut 5 to move along the linear guide rail, and simultaneously the screw nut 5 drives the mounting plate 7 on the outer side of the screw nut to move along the channel 1-1 on the shell.
Good smooth and easy degree when guaranteeing the sharp action ware operation needs to make and has the high enough depth of parallelism between linear guide and the lead screw, the utility model discloses have the horizontal regulatory function of linear guide and the vertical regulatory function of bearing to adjust the depth of parallelism between linear guide and the lead screw that can be convenient.
The linear guide rail has the transverse adjusting function: corresponding bolt mounting holes are formed in the bottom surface 1-a of the shell and the linear guide rail 2 (wherein the bolt mounting holes in the bottom surface of the shell are through holes, and the bolt mounting holes in the linear guide rail are countersunk internal thread holes), the linear guide rail 2 is fixedly mounted on the bottom surface 1-a of the shell through bolts m1, the diameter of the bolt mounting holes 1-a1 in the bottom surface of the shell is larger than the diameter of the bolts m1, and preferably the bolt mounting holes in the bottom surface of the shell are larger than the diameter of the bolts by 1-3mm, so that the linear guide rail can be adjusted in mounting position on a transverse plane (namely along the bottom surface of the shell).
The longitudinal adjusting function of the bearing support is as follows: corresponding bolt mounting holes (wherein, the bolt mounting holes on the side surface of the shell are through holes, and the bolt mounting holes on the bearing support are internal thread holes) are arranged on the side surface 1-b of the shell and the bearing support 6, the bearing support 6 is fixedly mounted on the side surface 1-b of the shell through bolts m2, the hole diameter of the bolt mounting holes 1-b1 on the side surface of the shell is larger than the diameter of the bolts m2, and preferably, the bolt mounting holes on the side surface of the shell are larger than the diameter of the bolts by 1-3mm, so that the mounting position of the bearing support can be adjusted on a longitudinal plane (namely, along the side surface of the shell).
Furthermore, the cross section of the shell is rectangular, and the bottom surface of the shell is perpendicular to the side surface of the shell, namely the mounting surface of the linear guide rail on the shell is perpendicular to the mounting surface of the bearing support on the shell.
Further, the bearings at the two ends of the lead screw are self-aligning bearings, so that a certain angular deviation adjustment amount can be formed between the lead screw and the bearings, and the adjustment requirement of the parallelism between the lead screw and the linear guide rail during assembly is met.
Furthermore, the shell is formed by splicing two sub-frame plates, and the sub-frame plates are formed by bending flat plates.
Example two
On the basis of the first embodiment, furthermore, one end of the housing is provided with a rotary encoder 8, and the rotary encoder is connected with the outer end of the lead screw and used for measuring the angular speed of the lead screw and further converting the moving speed and the position of the slide block.
EXAMPLE III
Furthermore, one end of the screw rod is in transmission connection with a driving motor 9, and the driving motor 9 is fixedly installed on the shell through a motor bracket 10. Specifically, one end of the screw rod is provided with a first belt pulley 11-1, an output shaft of the driving motor 9 is provided with a second belt pulley 11-2, and the second belt pulley is connected with the first belt pulley through a belt to drive the screw rod.
Furthermore, a fixing plate 1-2 is installed on the shell, an arc-shaped strip bolt installation hole is formed in the fixing plate 1-2, and the whole linear actuator is conveniently installed at a required position through the fixing plate 1-2 by adopting a bolt.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (10)
1. A linear actuator, comprising: the guide rail and the lead screw are arranged in the inner installation cavity of the shell along the length direction of the shell, and the sliding block is arranged on the linear guide rail in a sliding manner; bearing supports are arranged inside two ends of the shell, two ends of the lead screw are erected in bearings of the bearing supports, and the lead screw and the linear guide rail are arranged in parallel; the screw nut is arranged on the screw and fixedly connected with the sliding block, a channel is arranged on the shell along the length direction of the shell, the screw nut is connected with the mounting plate outside the shell through the channel, and the mounting plate is used for connecting a driven target object;
corresponding bolt mounting holes are formed in the bottom surface of the shell and the linear guide rail, the linear guide rail is fixedly mounted on the bottom surface of the shell through bolts, and the diameter of the bolt mounting hole in the bottom surface of the shell is larger than the diameter of the bolt, so that the linear guide rail can be adjusted in position on a transverse plane;
corresponding bolt mounting holes are formed in the side face of the shell and the bearing support, the bearing support is fixedly mounted on the side face of the shell through bolts, and the aperture of the bolt mounting hole in the side face of the shell is larger than the diameter of the bolt, so that the position of the bearing support can be adjusted on a longitudinal plane.
2. The linear actuator of claim 1, wherein: the bottom surface of the shell is perpendicular to the side surface of the shell, namely the mounting surface of the linear guide rail on the shell is perpendicular to the mounting surface of the bearing support on the shell.
3. The linear actuator of claim 1, wherein: the bolt mounting holes on the bottom surface of the shell are 1-3mm larger than the diameter of the bolts, and the bolt mounting holes on the side surface of the shell are 1-3mm larger than the diameter of the bolts.
4. The linear actuator of claim 1, wherein: the bearings at the two ends of the screw rod adopt self-aligning bearings, so that a certain angular offset adjustment amount can be formed between the screw rod and the bearings.
5. The linear actuator of claim 1, wherein: the cross section of the shell is rectangular.
6. The linear actuator of claim 1, wherein: the shell is formed by splicing two or more sub-frame plates, and the sub-frame plates are formed by bending flat plates.
7. The linear actuator of claim 1, wherein: a rotary encoder is installed at one end of the shell and connected with the outer end of the lead screw, and is used for measuring the angular speed of the lead screw and further converting the moving speed and the position of the sliding block.
8. The linear actuator of claim 1, wherein: one end of the screw rod is in transmission connection with a driving motor, the driving motor is a direct current motor or an alternating current motor or a stepping motor or a servo motor, and the driving motor is fixedly arranged on the shell through a motor support.
9. The linear actuator of claim 1, wherein: first belt pulley is installed to the one end of lead screw, installs the second belt pulley on driving motor's the output shaft, and the second belt pulley passes through the belt and is connected with first belt pulley, realizes the drive to the lead screw.
10. The linear actuator of claim 1, wherein: the shell is provided with a fixed plate, and the fixed plate is provided with arc-shaped strip bolt mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022170948.5U CN213685164U (en) | 2020-09-28 | 2020-09-28 | Linear actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022170948.5U CN213685164U (en) | 2020-09-28 | 2020-09-28 | Linear actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213685164U true CN213685164U (en) | 2021-07-13 |
Family
ID=76750319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022170948.5U Active CN213685164U (en) | 2020-09-28 | 2020-09-28 | Linear actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213685164U (en) |
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2020
- 2020-09-28 CN CN202022170948.5U patent/CN213685164U/en active Active
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