CN214999213U - Single-shaft double-layer transmission mechanism with good stability - Google Patents
Single-shaft double-layer transmission mechanism with good stability Download PDFInfo
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- CN214999213U CN214999213U CN202121270189.8U CN202121270189U CN214999213U CN 214999213 U CN214999213 U CN 214999213U CN 202121270189 U CN202121270189 U CN 202121270189U CN 214999213 U CN214999213 U CN 214999213U
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Abstract
The utility model relates to a single-shaft double-layer transmission mechanism with good stability, which comprises a bottom plate, a first concave slipway and a second concave slipway, wherein the first concave slipway is slidably arranged on the bottom plate, and the second concave slipway is slidably arranged on the first concave slipway; the bottom plate is provided with a motor and a screw rod, the screw rod is in power connection with an output shaft of the motor, and a screw rod nut arranged on the screw rod is fixedly connected with the first concave sliding table; the bottom plate is also provided with a gear set which is in power connection with the screw rod, the second concave sliding table is provided with a spur rack, and the spur rack is meshed with a spur gear of the gear set; the two sides of the second concave sliding table are also provided with a first sliding groove and a second sliding groove, the two sides of the first concave sliding table are fixedly provided with two roller assemblies, and rollers of the two roller assemblies are respectively connected with the first sliding groove and the second sliding groove in a sliding manner. The second concave slipway has the advantage of good stability and small left-right swinging quantity when sliding on the first concave slipway.
Description
Technical Field
The utility model relates to a drive mechanism technical field, more specifically say, relate to a double-deck drive mechanism of unipolar that stability is good.
Background
A patent application with publication number CN111237420A entitled "a single-shaft double-layer transmission" discloses a transmission structure. As shown in fig. 1, the single-shaft double-layer transmission mechanism comprises a base plate 1, a first concave sliding table 3 and a second concave sliding table 4, wherein the first concave sliding table 3 is slidably arranged on the base plate 1, and the second concave sliding table 4 is slidably arranged on the first concave sliding table 3. The bottom plate 1 is provided with a motor 2 and a screw rod, the screw rod is in power connection with an output shaft of the motor 2, a screw rod nut is arranged on the screw rod, and the screw rod nut is fixedly connected with the first concave sliding table 3. The bottom plate 1 is also provided with a gear set which is in power connection with the screw rod, the second concave sliding table 4 is provided with a spur rack 5, and the spur rack 5 is meshed with a spur gear 34 of the gear set. Like this, under the condition that adopts a power supply be motor 2, use the screw drive to drive first concave type slip table 3 and second concave type slip table 4 simultaneously for form double-deck slip table simultaneous transmission, make telescopic transmission structure, in narrow and small installation space, compare traditional drive mode, great increase the stroke of slip table, when having saved the two motor costs of installation, reduced installation space.
However, as shown in fig. 1, in the single-shaft double-layer transmission mechanism, the second female sliding table 4 slides along the first female sliding table 3 through four sliding blocks 33 mounted on the first sliding rail 31 and the second sliding rail 32, and the four sliding blocks 33 are screwed on the second female sliding table 4. Since the second concave slipway 4 needs to have a longer stroke relative to the first concave slipway 3, the four sliding blocks 33 are arranged more intensively, and in actual work, it is found that the second concave slipway 4 has poor stability in the telescopic motion and large left-right swing, and therefore, some improvement is necessary to increase the stability of the second concave slipway 4 in the telescopic motion.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a unipolar double-deck drive mechanism that stability is good is provided.
The utility model provides a technical scheme that its technical problem adopted is:
a single-shaft double-layer transmission mechanism with good stability comprises a bottom plate, a first concave sliding table and a second concave sliding table, wherein the first concave sliding table is slidably arranged on the bottom plate, and the second concave sliding table is slidably arranged on the first concave sliding table;
the bottom plate is provided with a motor and a screw rod, the screw rod is in power connection with an output shaft of the motor, a screw rod nut is arranged on the screw rod, and the screw rod nut is fixedly connected with the first concave sliding table;
the bottom plate is also provided with a gear set in power connection with the screw rod, the second concave sliding table is provided with a spur rack, and the spur rack is meshed with a spur gear of the gear set;
the two sides of the second concave sliding table are also provided with a first sliding groove and a second sliding groove, the two sides of the first concave sliding table are fixedly provided with two roller assemblies, and rollers of the two roller assemblies are respectively connected with the first sliding groove and the second sliding groove in a sliding manner.
Further, the roller assembly comprises a supporting shaft and a roller, the lower end of the supporting shaft is fixedly connected to two sides of the first concave sliding table through screws, and the roller is rotatably connected to the upper end of the supporting shaft.
Further, the roller is a rolling bearing.
Furthermore, an elastic cushion block is arranged between the lower end of the supporting shaft and the first concave sliding table.
Further, a rubber layer is arranged on the outer circular surface of the roller.
The beneficial effects of the utility model reside in that:
the first sliding groove and the second sliding groove are arranged on two sides of the second concave sliding table, and two roller assemblies are fixedly arranged on two sides of the first concave sliding table, so that the front end of the second concave sliding table is limited to slide between the two rollers; therefore, the front end and the rear end of the second concave sliding table are limited, the stability of the second concave sliding table is improved when the second concave sliding table slides on the first concave sliding table, and the left-right swinging amount is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
FIG. 1 is a single shaft double layer drive mechanism of the prior art;
fig. 2 is a schematic structural view of a second concave sliding table according to a preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a schematic cross-sectional view of the roller assembly according to the preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, a single-shaft double-layer transmission mechanism includes a base plate 1, a first concave sliding table 3 and a second concave sliding table 4, wherein the first concave sliding table 3 is slidably disposed on the base plate 1, and the second concave sliding table 4 is slidably disposed on the first concave sliding table 3. The bottom plate 1 is provided with a motor 2 and a screw rod, the screw rod is in power connection with an output shaft of the motor 2, a screw rod nut is arranged on the screw rod, and the screw rod nut is fixedly connected with the first concave sliding table 3. The bottom plate 1 is also provided with a gear set which is in power connection with the screw rod, the second concave sliding table 4 is provided with a spur rack 5, and the spur rack 5 is meshed with a spur gear 34 of the gear set. Like this, under the condition that adopts a power supply be motor 2, use the screw drive to drive first concave slip table 3 and second concave slip table 4 simultaneously for form double-deck slip table simultaneous transmission. The structure is the existing structure, and in order to solve the problems that the stability of the second concave sliding table 4 is poor and the left-right swing is large in the telescopic motion, a new pulley sliding groove structure is additionally arranged.
As shown in fig. 2-4, a first sliding groove 41 and a second sliding groove 42 are additionally disposed on two sides of the second concave sliding table 4, two roller assemblies 6 are fixedly disposed on two sides of the first concave sliding table 3, and rollers of the two roller assemblies 6 are slidably connected with the first sliding groove 41 and the second sliding groove 42, respectively. Like this for the front end of second concave slip table 4 is restricted and slides between two gyro wheels, and stability becomes good when second concave slip table 4 slides on first concave slip table 3, and the amount of left and right oscillation diminishes.
Specifically, as shown in fig. 4, the roller assembly 6 includes a support shaft 61 and a roller 62, a lower end of the support shaft 61 is fixedly connected to two sides of the first concave sliding table 3 through a screw 64, and the roller 62 is rotatably connected to an upper end of the support shaft 61. The roller 62 is preferably a rolling bearing.
The two rollers 62 respectively slide in the first sliding slot 41 and the second sliding slot 42, and an elastic cushion block 65 is further disposed between the lower end of the support shaft 61 and the first concave sliding table 3 in order to adjust the tightness of the rollers 62 against the first sliding slot 41 and the second sliding slot 42. When the two rollers 62 clamp the two sides of the second concave sliding table 4 too tightly, the second concave sliding table 4 is blocked when sliding, and the sliding is not flexible; when the two rollers 62 clamp the two sides of the second concave slipway 4 too loosely, the second concave slipway 4 cannot be limited to swing. Therefore, the elastic cushion block 65 is added, and the thickness of the elastic cushion block 65 is changed by screwing or unscrewing the screw 64, so that the clamping tightness of the two sides of the second concave sliding table 4 can be adjusted by the two rollers 62.
In order to reduce the vibration of the second concave sliding table 4, a rubber layer 63 is provided on the outer circumferential surface of the roller 62. Other parts are further arranged on the second concave sliding table 4, the second concave sliding table 4 vibrates relatively greatly when sliding back and forth, and the rubber layer 63 can play a relatively good vibration absorbing role.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (5)
1. A single-shaft double-layer transmission mechanism with good stability comprises a bottom plate, a first concave sliding table and a second concave sliding table, wherein the first concave sliding table is slidably arranged on the bottom plate, and the second concave sliding table is slidably arranged on the first concave sliding table;
the bottom plate is provided with a motor and a screw rod, the screw rod is in power connection with an output shaft of the motor, a screw rod nut is arranged on the screw rod, and the screw rod nut is fixedly connected with the first concave sliding table;
the bottom plate is also provided with a gear set in power connection with the screw rod, the second concave sliding table is provided with a spur rack, and the spur rack is meshed with a spur gear of the gear set;
the novel sliding table is characterized in that a first sliding groove and a second sliding groove are further formed in two sides of the second concave sliding table, two roller assemblies are fixedly arranged in two sides of the first concave sliding table, and rollers of the two roller assemblies are respectively connected with the first sliding groove and the second sliding groove in a sliding mode.
2. The single-shaft double-layer transmission mechanism with good stability as claimed in claim 1, wherein the roller assembly comprises a supporting shaft and a roller, the lower end of the supporting shaft is fixedly connected to two sides of the first concave sliding table through screws, and the roller is rotatably connected to the upper end of the supporting shaft.
3. The single-shaft double-layer transmission mechanism with good stability as claimed in claim 2, wherein the roller is a rolling bearing.
4. The single-shaft double-layer transmission mechanism with good stability as claimed in claim 2, wherein an elastic cushion block is further arranged between the lower end of the supporting shaft and the first concave sliding table.
5. The single-shaft double-layer transmission mechanism with good stability as claimed in claim 1, wherein a rubber layer is arranged on the outer circumferential surface of the roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121270189.8U CN214999213U (en) | 2021-06-07 | 2021-06-07 | Single-shaft double-layer transmission mechanism with good stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121270189.8U CN214999213U (en) | 2021-06-07 | 2021-06-07 | Single-shaft double-layer transmission mechanism with good stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214999213U true CN214999213U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121270189.8U Active CN214999213U (en) | 2021-06-07 | 2021-06-07 | Single-shaft double-layer transmission mechanism with good stability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214999213U (en) |
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2021
- 2021-06-07 CN CN202121270189.8U patent/CN214999213U/en active Active
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