CN213981954U - Gear rack clearance eliminating device - Google Patents
Gear rack clearance eliminating device Download PDFInfo
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- CN213981954U CN213981954U CN202022779177.XU CN202022779177U CN213981954U CN 213981954 U CN213981954 U CN 213981954U CN 202022779177 U CN202022779177 U CN 202022779177U CN 213981954 U CN213981954 U CN 213981954U
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- rack
- fixedly connected
- gear
- push rod
- horizontally
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Abstract
The utility model relates to a rack and pinion clearance elimination technical field discloses a rack and pinion clearance elimination device, which comprises a worktable, the vertical rectangle opening of having seted up on the board is located the vertical overlap joint of board upper portion level has the axle bed, and the vertical activity of axle bed inner chamber level runs through there is the pivot, is located tip fixedly connected with gear before the pivot, wheel and rack meshing sets up. When the gear and the rack generate a gap, the slide block at the bottom of the shaft seat moves leftwards under the action of the tension spring in the rectangular through hole, so that the gear and the rack are ensured to be tightly meshed; because the axle bed moves left and can drive the support arm to rotate through first round pin axle through the push rod to thereby guarantee that the horizontal pole deflects and guarantee that the tensioning wheel extrudes the belt and form the extrusion, avoid the belt to take place to relax, thereby lead to the unable driven condition.
Description
Technical Field
The utility model relates to a rack and pinion elimination clearance technical field specifically is a rack and pinion elimination clearance device.
Background
The mechanical transmission system comprises common mechanical transmission types such as gear and rack transmission, worm and gear transmission, belt transmission, chain transmission and gear train. In the process of the gear and rack meshing transmission reciprocating motion, especially when the gear returns to rotate in a steering mode, a gap is easily formed between the gear and the rack, and the transmission precision and the transmission efficiency are affected and the noise is improved due to the existence of the clearance. And generally adopt double gear anti-backlash in traditional rack and pinion transmission, but double gear anti-backlash structure is complicated, and is higher to the material requirement, and later maintenance is also fairly inconvenient, also has very high requirement to the installation accuracy of rack, and rack and pinion is through long-term meshing moreover, and the gear is worn and torn easily, and the rack can take place to warp, can seriously influence operation accuracy and transmission efficiency.
A gap eliminating device for a rack and pinion drive is disclosed by the retrieval application No. 201920289118.9. The device comprises a driving motor, a belt wheel connected with the driving motor through a crawler, a gear connected with the belt wheel through a gear shaft, a rack meshed with the gear, and a gap eliminating mechanism for eliminating a gap between the gear and the rack, wherein the gap eliminating mechanism comprises an eccentric body and a connecting piece, the eccentric body is sleeved outside the gear shaft and is rotatably connected with the gear shaft, and the connecting piece is fixedly connected with the eccentric body. Although the utility model discloses a simple structure, it is convenient to use, can eliminate the rack and pinion clearance by oneself, and can keep high efficiency transmission and transmission precision for a long time, and the transmission is small in noise.
However, the inventor finds that the technical scheme still has at least the following defects:
when the gap eliminating device arranged in the technical scheme is in actual use, the belt can be loosened, so that the condition of incapability of transmission is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rack and pinion eliminates clearance device has solved the problem that proposes among the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a gear rack clearance eliminating device comprises a machine table, wherein a rectangular through hole is vertically formed in the machine table, a shaft seat is horizontally and longitudinally lapped on the upper portion of the machine table, a rotating shaft horizontally and longitudinally penetrates through an inner cavity of the shaft seat, a gear is fixedly connected to the front end portion of the rotating shaft, the gear and the rack are meshed, a sliding block is vertically and fixedly connected to the middle position of the bottom of the shaft seat downwards, an electric push rod is horizontally and fixedly connected to the middle of the right side of the machine table leftwards, an extrusion block is fixedly connected to the driving end of the electric push rod, and an infrared laser range finder and a PLC are horizontally and fixedly connected to the left and are distributed at the front end and the rear end of the right side of the upper portion of the machine table;
the inner cavity of the rectangular port positioned on the left side of the sliding block is fixedly connected with a tension spring, the middle part of the rear side of the machine table is movably hinged to the middle part of the support arm through a first pin shaft, the lower end part of the support arm is fixedly connected with the left end part of the push rod through a second pin shaft, and the right end part of the push rod is fixedly connected to the rear side wall of the shaft seat; and a transverse rod is horizontally and longitudinally fixedly connected to the upper part of the support arm, a tension wheel is fixedly connected to the rear end of the transverse rod, and the tension wheel is attached to the inner surface of the belt.
As an optimal implementation mode of the utility model, the signal data of infrared laser range finder is connected with electric putter through the PLC controller is automatically controlled.
As an optimized implementation manner of the utility model, extension spring right-hand member portion and slider left side fixed connection.
As an optimal implementation mode of the utility model, the infrared laser range finder aligns with axle bed right side level.
As a preferred embodiment of the utility model, the slider slip joint is in the rectangle through-hole, and the extrusion piece activity is pegged graft in the rectangle through-hole.
Compared with the prior art, the beneficial effects of the utility model are as follows:
when the gear and the rack generate a gap, the slide block at the bottom of the shaft seat moves leftwards under the action of the tension spring in the rectangular through hole, so that the gear and the rack are ensured to be tightly meshed; when the infrared laser range finder detects the position of the shaft seat, a signal is transmitted to the PLC to control the electric push rod to drive the extrusion block to move leftwards, so that the sliding block is extruded; in the process, the shaft seat moves leftwards, the supporting arm can be driven by the push rod to rotate through the first pin shaft, so that the transverse rod deflects, the tensioning wheel is guaranteed to extrude the belt to form extrusion, and the belt is prevented from loosening, so that the condition of incapability of transmission is caused.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a top view of a rack and pinion backlash elimination apparatus of the present invention;
fig. 2 is a schematic side view of a cross-sectional structure of a slider of a rack and pinion gap eliminating device according to the present invention at a position distributed in a rectangular opening;
fig. 3 is a schematic view of a rear view structure of the rack and pinion gap eliminating device of the present invention, wherein the supporting arm is connected to the push rod.
In the figure: 1. a machine platform; 2. a support arm; 3. a belt; 4. a tension wheel; 5. a cross bar; 6. a shaft seat; 7. a rotating shaft; 8. an infrared laser range finder; 9. an electric push rod; 10. a rectangular through opening; 11. a PLC controller; 12. extruding the block; 13. a gear; 14. a rack; 15. a tension spring; 16. a first pin shaft; 17. a second pin shaft; 18. a push rod; 19. a slide block.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected" and "disposed" are to be interpreted broadly, and may be, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the utility model discloses in provide only supply the reference with the model of electrical apparatus. For those skilled in the art, different types of electrical appliances with the same function can be replaced according to actual use conditions, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.
Referring to fig. 1-3, the present invention provides a technical solution: a gear rack clearance eliminating device comprises a machine table 1, wherein a rectangular through hole 10 is vertically formed in the machine table 1, a shaft seat 6 is horizontally and longitudinally lapped on the upper portion of the machine table 1, a rotating shaft 7 horizontally and longitudinally penetrates through the inner cavity of the shaft seat 6, a gear 13 is fixedly connected to the front end portion of the rotating shaft 7, the gear 13 is meshed with a rack 14, a sliding block 19 is vertically and downwardly fixedly connected to the middle position of the bottom of the shaft seat 6, an electric push rod 9 is horizontally and leftwards fixedly connected to the middle portion of the right side of the machine table 1, an extrusion block 12 is fixedly connected to the driving end of the electric push rod 9, and an infrared laser range finder 8 and a PLC 11 are horizontally and leftwards fixedly connected to the front end and the rear end of the right side of the upper portion of the machine table 1;
the inner cavity of the rectangular through hole 10 positioned at the left of the sliding block 19 is fixedly connected with a tension spring 15, the middle part of the rear side of the machine table 1 is movably hinged to the middle part of the support arm 2 through a first pin shaft 16, the lower end part of the support arm 2 is fixedly connected with the left end part of a push rod 18 through a second pin shaft 17, and the right end part of the push rod 18 is fixedly connected to the rear side wall of the shaft seat 6; a cross rod 5 is horizontally and longitudinally fixedly connected to the upper part of the support arm 2, a tension pulley 4 is fixedly connected to the rear end of the cross rod 5, and the tension pulley 4 is attached to the inner surface of the belt 3; specifically, the method comprises the following steps: when a gap is formed between the gear 13 and the rack 14, the sliding block 19 at the bottom of the shaft seat 6 moves leftwards under the action of the tension spring 15 in the rectangular through hole 10, so that the gear 13 is tightly meshed with the rack 14; when the infrared laser range finder 8 detects the position of the shaft seat 6, a signal is transmitted to the PLC 11 to control the electric push rod 9 to drive the extrusion block 12 to move leftwards, so that the slide block 19 is extruded; in the process, the shaft seat 6 moves leftwards, and the push rod 18 can drive the support arm 2 to rotate through the first pin shaft 16, so that the transverse rod 5 is enabled to deflect, the tensioning wheel 4 is enabled to extrude the belt 3 to form extrusion, and the belt 3 is prevented from loosening, and the condition that transmission cannot be achieved is avoided.
In this embodiment, the signal data of the infrared laser range finder 8 is electrically controlled and connected with the electric push rod 9 through the PLC controller 11.
In this embodiment (see fig. 2), the right end of the tension spring 15 is fixedly connected to the left side of the slider 19.
In this embodiment (as shown in fig. 1), the infrared laser range finder 8 is horizontally aligned with the right side of the shaft seat 6.
In this embodiment (please refer to fig. 2), the sliding block 19 is slidably engaged in the rectangular through hole 10, and the extruding block 12 is movably inserted in the rectangular through hole 10.
It should be noted that the utility model relates to a rack and pinion clearance elimination device, each is the parts that general standard component or technical staff in the field know, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental method.
The working principle is as follows: when a gap is formed between the gear 13 and the rack 14, the sliding block 19 at the bottom of the shaft seat 6 moves leftwards under the action of the tension spring 15 in the rectangular through hole 10, so that the gear 13 is tightly meshed with the rack 14; when the infrared laser range finder 8 detects the position of the shaft seat 6, a signal is transmitted to the PLC 11 to control the electric push rod 9 to drive the extrusion block 12 to move leftwards, so that the slide block 19 is extruded; in the process, the shaft seat 6 moves leftwards, and the push rod 18 can drive the support arm 2 to rotate through the first pin shaft 16, so that the transverse rod 5 is enabled to deflect, the tensioning wheel 4 is enabled to extrude the belt 3 to form extrusion, and the belt 3 is prevented from loosening, and the condition that transmission cannot be achieved is avoided.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a rack and pinion elimination clearance device which characterized in that: the device comprises a machine table (1), wherein a rectangular through hole (10) is vertically formed in the machine table (1), a shaft seat (6) is horizontally and longitudinally lapped on the upper portion of the machine table (1), a rotating shaft (7) horizontally and longitudinally penetrates through an inner cavity of the shaft seat (6), a gear (13) is fixedly connected to the front end portion of the rotating shaft (7), the gear (13) is meshed with a rack (14), a sliding block (19) is vertically and downwardly fixedly connected to the middle position of the bottom of the shaft seat (6), an electric push rod (9) is horizontally and leftwards fixedly connected to the middle portion of the right side of the machine table (1), an extrusion block (12) is fixedly connected to the driving end of the electric push rod (9), and an infrared laser range finder (8) and a PLC (11) are horizontally and leftwards fixedly connected;
an inner cavity of the rectangular through hole (10) positioned on the left side of the sliding block (19) is fixedly connected with a tension spring (15), the middle part of the rear side of the machine table (1) is movably hinged to the middle part of the supporting arm (2) through a first pin shaft (16), the lower end part of the supporting arm (2) is fixedly connected with the left end part of a push rod (18) through a second pin shaft (17), and the right end part of the push rod (18) is fixedly connected to the rear side wall of the shaft seat (6); and the upper part of the support arm (2) is horizontally and longitudinally fixedly connected with a cross rod (5), the rear end of the cross rod (5) is fixedly connected with a tension pulley (4), and the tension pulley (4) is attached to the inner surface of the belt (3).
2. A rack and pinion backlash elimination apparatus as claimed in claim 1, wherein: and signal data of the infrared laser range finder (8) is in electric control connection with the electric push rod (9) through a PLC (programmable logic controller) (11).
3. A rack and pinion backlash elimination apparatus as claimed in claim 1, wherein: the right end part of the tension spring (15) is fixedly connected with the left side of the sliding block (19).
4. A rack and pinion backlash elimination apparatus as claimed in claim 1, wherein: the infrared laser range finder (8) is horizontally aligned with the right side of the shaft seat (6).
5. A rack and pinion backlash elimination apparatus as claimed in claim 1, wherein: the sliding block (19) is slidably clamped in the rectangular through hole (10), and the extrusion block (12) is movably inserted in the rectangular through hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022779177.XU CN213981954U (en) | 2020-11-26 | 2020-11-26 | Gear rack clearance eliminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022779177.XU CN213981954U (en) | 2020-11-26 | 2020-11-26 | Gear rack clearance eliminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213981954U true CN213981954U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022779177.XU Active CN213981954U (en) | 2020-11-26 | 2020-11-26 | Gear rack clearance eliminating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213981954U (en) |
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2020
- 2020-11-26 CN CN202022779177.XU patent/CN213981954U/en active Active
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