CN218882899U - Novel gapless transmission gearbox - Google Patents

Abstract

The utility model discloses a novel gapless transmission gearbox, which comprises a shell, wherein a first input shaft is arranged in the shell, a first helical gear is arranged on the first input shaft, and a gear clearance adjusting part is arranged on one side of the first input shaft; a force transmission shaft lever is arranged on the other side of the first input shaft, a second helical gear is arranged on the force transmission shaft lever, a third helical gear is arranged on the force transmission shaft lever, a first output shaft is arranged on one side of the force transmission shaft lever, and a fourth helical gear is arranged on the first output shaft; the gear clearance adjusting piece comprises a rotating shaft, a fifth helical gear and a sixth helical gear are arranged on the rotating shaft, the fifth helical gear is meshed with the first helical gear, the sixth helical gear is meshed with the fourth helical gear, and a pressing spring is arranged at the side end of the rotating shaft. The utility model discloses structural design is ingenious, rationally can make zero clearance transmission, gearbox do not have the shake between the gear of gearbox, can be high to high, smart, sharp product machining precision, be worth popularizing and applying.

Description

Novel gapless transmission gearbox

Technical Field

The utility model relates to a gearbox, especially a new-type zero clearance transmission gearbox.

Background

The speed changing box is an independent part consisting of gear transmission, worm transmission and gear-worm transmission which are enclosed in a rigid shell, is usually used as a speed reducing transmission device between a prime mover and a working machine, plays a role in matching rotating speed and transmitting torque between the prime mover and the working machine or an actuating mechanism, and is widely applied to modern machinery.

The traditional gearbox can produce small clearance between the gear because the limit of machining precision and the reason of assembly precision, when moving, can produce the running error (for example move the processing to operation high accuracy equipment), simultaneously because the production in clearance also can produce the condition of collision noise and shake to derailleur itself when the gearbox moves to there is very big influence to the machining precision of high accuracy equipment, causes the defective percentage to increase, is unfavorable for the production and processing to high, smart, sharp product.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve above-mentioned prior art's shortcoming, provide a new-type zero clearance transmission gearbox that can zero clearance transmission, satisfied the demand that gearbox operation precision is high, the gearbox does not have the shake.

The utility model provides a technical scheme that its technical problem adopted: the novel gapless transmission gearbox comprises a shell, wherein a first input shaft is rotationally connected in the shell, a first helical gear is fixed on the first input shaft, and a gear gap adjusting piece is arranged on one side of the first input shaft; a force transmission shaft lever which is rotatably connected in the shell is arranged on the other side of the first input shaft, a second helical gear which is meshed with the first helical gear is fixed on the force transmission shaft lever, a third helical gear is fixed on the force transmission shaft lever, a first output shaft which is rotatably connected at the shell is arranged on one side of the force transmission shaft lever, a fourth helical gear is fixed on the first output shaft, and the third helical gear is meshed with the fourth helical gear; the gear clearance adjusting part comprises a rotating shaft which is rotatably connected in the shell and can axially move, a fifth helical gear and a sixth helical gear are fixed on the rotating shaft, the fifth helical gear is meshed with the first helical gear, the sixth helical gear is meshed with the fourth helical gear, and a pressing spring which is used for pressing the tooth surface of the fifth helical gear on the tooth surface of the first helical gear along the axial direction of the rotating shaft and pressing the tooth surface of the sixth helical gear on the tooth surface of the fourth helical gear along the axial direction of the rotating shaft is arranged at the side end of the rotating shaft. The first input shaft has the function of applying torsion through the first input shaft, the first bevel gear has the function of applying a force application gear, the force transmission shaft rod, the second bevel gear and the third bevel gear can be used for carrying out variable speed transmission on the force under high load, and the first output shaft and the fourth bevel gear can be used for outputting the torsion; the function of the gear clearance adjusting part is that the inclined tooth surface of the fifth bevel gear can be tightly pressed on the inclined tooth surface of the first bevel gear and the inclined tooth surface of the sixth bevel gear can be tightly pressed on the inclined tooth surface of the fourth bevel gear, so that no clearance exists in force transmission between the fifth bevel gear and the first inclined gear, no clearance exists in force transmission between the sixth bevel gear and the fourth bevel gear, and the inclined pressing force can be transmitted to the second bevel gear through the first inclined gear, so that the force transmission shaft rod is slightly deformed, and no clearance exists between the third bevel gear and the fourth bevel gear.

The side end of the rotating shaft is provided with a first supporting shaft seat fixed on the shell, the side end of the rotating shaft is provided with a first plane needle rolling bearing, the inner ring of the first plane needle rolling bearing is tightly matched with the side end of the rotating shaft, the outer ring of the first plane needle rolling bearing is inserted in the shell, and the end part of the side end of the rotating shaft is inserted in the first supporting shaft seat; the other end of the rotating shaft is provided with a second supporting shaft seat fixed on the shell, a spring seat is inserted in the second supporting shaft seat, a placing groove is formed in the inner side of the spring seat, a spring mounting hole is formed in the outer side of the spring seat, a pressing spring is mounted between the end face of the spring mounting hole and the end face of the second supporting shaft seat, a second plane needle rolling bearing is arranged at the other side end of the rotating shaft, the inner ring of the second plane needle rolling bearing is tightly matched with the other side end of the rotating shaft, the outer ring of the second plane needle rolling bearing is inserted into the shell, a thrust bearing is placed at the placing groove, and the end portion of the other side of the rotating shaft is mounted at the thrust bearing. The first and second planar needle bearings are used for supporting and rotating the rotating shaft under high load, and the spring seat and the spring mounting hole are used for pushing the spring seat by using a pressing spring so as to drive the whole rotating shaft to axially move, so that an inclined tooth surface of a fifth helical gear is tightly pressed on an inclined tooth surface of a first helical gear and an inclined tooth surface of a sixth helical gear is tightly pressed on an inclined tooth surface of a fourth helical gear, force transmission between the fifth helical gear and the first inclined gear is gapless, force transmission between the sixth helical gear and the fourth helical gear is gapless, the inclined pressing force can be transmitted to the second helical gear through the first inclined gear, a force transmission shaft rod is slightly deformed, and the third helical gear and the fourth helical gear are gapless; the thrust bearing has the function of transmitting the pressing power of the pressing spring to the rotating shaft through the thrust bearing, so that the rotating shaft can rotate and can also bear the axial thrust action on the rotating shaft when rotating, and the friction resistance of the rotating shaft is extremely small.

Further perfection, the fourth helical gear, the sixth helical gear and the third helical gear have the same module and the same tooth number, the fifth helical gear and the second helical gear have the same module and the same tooth number, the first helical gear has the same module and the same tooth number, and the third helical gear has the same module and the same tooth number. The fourth helical gear and the module and the same effect of number of teeth of sixth helical gear and third helical gear do benefit to closely installing here, here utilize little first helical gear to drive big second helical gear and utilize and drive first output shaft department fourth helical gear with the coaxial third helical gear of second helical gear, synchronous sixth helical gear also can drive the rotation of fourth helical gear simultaneously, thereby play better stabilizing effect (be fit for under the high load operating mode), and then drive first output shaft rotation, and then the required low torsion of first input shaft just can drive first output shaft output high moment of torsion.

Further perfection, the second helical gear and the fifth helical gear are respectively pressed and fixed at the position of the force transmission shaft lever and the rotating shaft through the expansion sleeves. The expansion sleeve has the effects that the second bevel gear can be conveniently installed on the force transmission shaft rod, the installation accuracy of the second bevel gear can be conveniently adjusted and fastened, the fifth bevel gear can be conveniently installed on the rotating shaft, and the installation accuracy of the fifth bevel gear can be conveniently adjusted and fastened; an expansion coupling sleeve (expansion sleeve for short) is an advanced basic component which is widely used for mechanical coupling under heavy load in the world at present, and in the coupling of a wheel and a shaft, the expansion coupling sleeve is a keyless coupling device which realizes load transmission by tightening a high-strength bolt to ensure that pressure and friction force generated between containing surfaces are transmitted.

Further perfection, a pair of first tapered roller bearings which are symmetrically arranged is installed at the outer end of the first output shaft, a pair of second tapered roller bearings which are symmetrically arranged is installed at the inner end of the first input shaft, and a pair of third tapered roller bearings which are symmetrically arranged is installed at the inner side of the force transmission shaft rod. The first conical roller bearing can carry out high-load rotary bearing on the first output shaft, not only anticlockwise rotate but also clockwise rotate, the first conical roller bearing can be well and stably stressed by utilizing the first conical roller bearing, and has an automatic axis correction function.

The utility model discloses profitable effect is: the utility model has the advantages of ingenious design, it is equitable, utilize first input shaft to exert torsion through first input shaft, utilize first helical gear effect application of force gear, utilize the biography power axostylus axostyle, the second helical gear, the third helical gear can carry out high load down variable speed transmission to the power, utilize first output shaft, the fourth helical gear can be exported torsion, utilize the gear clearance adjustment piece can make the slope flank of tooth of fifth helical gear compress tightly on the slope flank of tooth of first helical gear and can make the slope flank of tooth of sixth helical gear compress tightly on the slope flank of tooth of fourth helical gear, thereby make and pass power zero clearance between fifth helical gear and the first slope gear, pass power zero clearance between sixth helical gear and the fourth helical gear, and the slope packing force can pass power transmission for the second helical gear through first slope gear, and then make the power axostylus axostyle slightly warp, thereby make also zero clearance between third helical gear and the fourth helical gear, the utility model discloses structural design is ingenious, rationally can make the zero clearance transmission between the gear of gearbox, can be high, it is exquisite, the product machining precision of point is high, be worth popularizing and applying.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a first perspective view of the interior of the present invention;

FIG. 3 is a second perspective view of the inside of the present invention;

fig. 4 is a third perspective view of the inside of the present invention;

fig. 5 is a fourth perspective view of the interior of the present invention;

fig. 6 is a perspective view of the spring seat of the present invention;

fig. 7 is an exploded view of the inside of the present invention.

Description of the reference numerals: the device comprises a shell 1, a first input gear shaft 2, a first helical gear 3, a gear clearance adjusting part 4, a rotating shaft 4-1, a fifth helical gear 4-2, a sixth helical gear 4-3, a pressing spring 4-4, a first supporting shaft seat 4-5, a first plane needle roller bearing 4-6, a second supporting shaft seat 4-7, a spring seat 4-8, a second plane needle roller bearing 4-9, a thrust bearing 4-10, a force transmission shaft rod 5, a second helical gear 5-1, a third helical gear 5-2, a first output shaft 6, a fourth helical gear 6-1, an expansion sleeve 7, a first tapered roller bearing 8, a second tapered roller bearing 9 and a third tapered roller bearing 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element 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.

With reference to the accompanying drawings: the novel gapless transmission gearbox comprises a shell 1, wherein a first input shaft 2 is rotatably connected in the shell 1, a first helical gear 3 is fixed on the first input shaft 2, and a gear clearance adjusting piece 4 is arranged on one side of the first input shaft 2; a force transmission shaft lever 5 which is rotatably connected in the shell 1 is arranged on the other side of the first input shaft 2, a second helical gear 5-1 which is meshed with the first helical gear 3 is fixed on the force transmission shaft lever 5, a third helical gear 5-2 is fixed on the force transmission shaft lever 5, a first output shaft 6 which is rotatably connected at the shell 1 is arranged on one side of the force transmission shaft lever 5, a fourth helical gear 6-1 is fixed on the first output shaft 6, and the third helical gear 5-2 is meshed with the fourth helical gear 6-1; the gear clearance adjusting part 4 comprises a rotating shaft 4-1 which is rotatably connected in the shell 1 and can axially move, a fifth helical gear 4-2 and a sixth helical gear 4-3 are fixed on the rotating shaft 4-1, the fifth helical gear 4-2 is meshed with the first helical gear 3, the sixth helical gear 4-3 is meshed with the fourth helical gear 6-1, and a pressing spring 4-4 used for pressing the tooth surface of the fifth helical gear 4-2 on the tooth surface of the first helical gear 3 along the axial direction of the rotating shaft 4-1 and pressing the tooth surface of the sixth helical gear 4-3 on the tooth surface of the fourth helical gear 6-1 along the axial direction of the rotating shaft 4-1 is arranged at the side end of the rotating shaft 4-1.

A first supporting shaft seat 4-5 fixed on the shell 1 is arranged at the side end of the rotating shaft 4-1, a first flat needle rolling bearing 4-6 is arranged at the side end of the rotating shaft 4-1, the inner ring of the first flat needle rolling bearing 4-6 is tightly matched with the side end of the rotating shaft 4-1, the outer ring of the first flat needle rolling bearing 4-6 is inserted at the shell 1, and the end part of the side end of the rotating shaft 4-1 is inserted with the first supporting shaft seat 4-5; the other end of the rotating shaft 4-1 is provided with a second supporting shaft seat 4-7 fixed on the shell 1, a spring seat 4-8 is inserted in the second supporting shaft seat 4-7, the inner side of the spring seat 4-8 is provided with a placing groove 4-8a, the outer side of the spring seat 4-8 is provided with a spring mounting hole 4-8b, a pressing spring 4-4 is mounted between the end face of the spring mounting hole 4-8b and the end face of the second supporting shaft seat 4-7, the other side end of the rotating shaft 4-1 is provided with a second flat needle rolling bearing 4-9, the inner ring of the second flat needle rolling bearing 4-9 is tightly matched with the other side end of the rotating shaft 4-1, the outer ring of the second flat needle rolling bearing 4-9 is inserted in the shell 1, a thrust bearing 4-10 is placed in the placing groove 4-8a, and the other side end of the rotating shaft 4-1 is mounted in the thrust bearing 4-10.

The fourth helical gear 6-1, the sixth helical gear 4-3 and the third helical gear 5-2 have the same module and the same number of teeth, the fifth helical gear 4-2 and the second helical gear 5-1 have the same module and the same number of teeth, the first helical gear 3 has the number of teeth smaller than the second helical gear 5-1, the third helical gear 5-2 and the second helical gear 5-1 have the same module and the same number of teeth smaller than the second helical gear 5-1, and the third helical gear 5-2 has the same number of teeth smaller than the second helical gear 5-1.

The second bevel gear 5-1 and the fifth bevel gear 4-2 are respectively pressed and fixed at the position of the force transmission shaft lever 5 and the position of the rotating shaft 4-1 through the expansion sleeve 7.

A pair of first tapered roller bearings 8 which are symmetrically arranged is installed at the outer end of the first output shaft 6, a pair of second tapered roller bearings 9 which are symmetrically arranged is installed at the inner end of the first input shaft 2, and a pair of third tapered roller bearings 10 which are symmetrically arranged is installed at the inner side of the power transmission shaft lever 4.

The working principle of the utility model is that in a shell 1, a pressing spring 4-4 presses a spring seat 4-8 to move at a second supporting shaft seat 4-7 and presses the spring seat 4-8 to a thrust bearing 4-10, so that a rotating shaft 4-1 moves, further the inclined tooth surface of a fifth helical gear 4-2 is pressed on the inclined tooth surface of a first helical gear 3 and the inclined tooth surface of a sixth helical gear 4-3 is pressed on the inclined tooth surface of a fourth helical gear 6-1, further, no clearance exists in force transfer between the fifth helical gear 4-2 and the first inclined gear 3, no clearance exists in force transfer between the sixth helical gear 4-3 and the fourth helical gear 6-1, further, the inclined pressing force can be transferred to a second helical gear 5-1 through the first inclined gear 3, further, the force transfer 5 slightly deforms, further, the third helical gear 5-2 and the fourth helical gear 6-1 are free from clearance, further, no clearance exists between a first input shaft 2 and a first output shaft 6, no power transmission error exists, the gearbox has no shake, and the high-precision processing under the high-repeated positioning motion environment is particularly suitable for high precision processing; the utility model has the advantages of ingenious, reasonable design, can make gapless transmission between each helical gear in the gearbox, can process the work piece of higher accuracy, thereby gearbox zero clearance does not have the shake when the operation moreover, more does benefit to the processing to the high accuracy work piece, is worth popularizing and applying.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims (5)

1. A novel gapless transmission gearbox comprises a shell (1) and is characterized in that: a first input shaft (2) is rotatably connected in the shell (1), a first helical gear (3) is fixed on the first input shaft (2), and a gear clearance adjusting piece (4) is arranged on one side of the first input shaft (2); a force transmission shaft lever (5) which is rotatably connected in the shell (1) is arranged on the other side of the first input shaft (2), a second helical gear (5-1) which is meshed with the first helical gear (3) is fixed on the force transmission shaft lever (5), a third helical gear (5-2) is fixed on the force transmission shaft lever (5), a first output shaft (6) which is rotatably connected with the shell (1) is arranged on one side of the force transmission shaft lever (5), a fourth helical gear (6-1) is fixed on the first output shaft (6), and the third helical gear (5-2) is meshed with the fourth helical gear (6-1); the gear clearance adjusting piece (4) comprises a rotating shaft (4-1) which is rotatably connected in the shell (1) and can axially move, a fifth helical gear (4-2) and a sixth helical gear (4-3) are fixed on the rotating shaft (4-1), the fifth helical gear (4-2) is meshed with the first helical gear (3), the sixth helical gear (4-3) is meshed with the fourth helical gear (6-1), and a pressing spring (4-4) used for enabling the tooth surface of the fifth helical gear (4-2) to be axially pressed on the tooth surface of the first helical gear (3) along the rotating shaft (4-1) and enabling the tooth surface of the sixth helical gear (4-3) to be axially pressed on the tooth surface of the fourth helical gear (6-1) along the rotating shaft (4-1) is arranged at the side end of the rotating shaft (4-1).

2. The new zero-backlash drive transmission of claim 1, further comprising: a first supporting shaft seat (4-5) fixed on the shell (1) is arranged at the side end of the rotating shaft (4-1), a first flat needle rolling bearing (4-6) is arranged at the side end of the rotating shaft (4-1), the inner ring of the first flat needle rolling bearing (4-6) is tightly matched with the side end of the rotating shaft (4-1), the outer ring of the first flat needle rolling bearing (4-6) is inserted in the shell (1), and the end part of the side end of the rotating shaft (4-1) is inserted in the first supporting shaft seat (4-5); the other end of the rotating shaft (4-1) is provided with a second supporting shaft seat (4-7) fixed on the shell (1), a spring seat (4-8) is inserted in the second supporting shaft seat (4-7), a placing groove (4-8 a) is formed in the inner side of the spring seat (4-8), a spring mounting hole (4-8 b) is formed in the outer side of the spring seat (4-8), the pressing spring (4-4) is mounted between the end face of the spring mounting hole (4-8 b) and the end face of the second supporting shaft seat (4-7), the other side end of the rotating shaft (4-1) is provided with a second flat needle rolling bearing (4-9), the inner ring of the second flat needle rolling bearing (4-9) is matched with the other side end of the rotating shaft (4-1), the outer ring of the second flat needle rolling bearing (4-9) is inserted in the shell (1), the thrust bearing (4-10) is placed in the placing groove (4-8 a), and the other side of the rotating shaft (4-1) is mounted at the end of the thrust bearing (4-10).

3. The new zero-backlash drive transmission of claim 1, further comprising: the module and the tooth number of the fourth helical gear (6-1), the sixth helical gear (4-3) and the third helical gear (5-2) are the same, the module and the tooth number of the fifth helical gear (4-2) and the second helical gear (5-1) are the same, the module and the tooth number of the first helical gear (3) are the same as those of the second helical gear (5-1), the tooth number of the first helical gear (3) is smaller than that of the second helical gear (5-1), the module and the tooth number of the third helical gear (5-2) are the same as those of the second helical gear (5-1), and the tooth number of the third helical gear (5-2) is smaller than that of the second helical gear (5-1).

4. The new zero-backlash drive transmission of claim 1, further comprising: the second helical gear (5-1) and the fifth helical gear (4-2) are respectively pressed and fixed at the position of the force transmission shaft lever (5) and the position of the rotating shaft (4-1) through the expansion sleeve (7).

5. The new zero-backlash drive transmission of claim 1, further comprising: the outer end of the first output shaft (6) is provided with a pair of first tapered roller bearings (8) which are symmetrically arranged, the inner end of the first input shaft (2) is provided with a pair of second tapered roller bearings (9) which are symmetrically arranged, and the inner side of the power transmission shaft lever (5) is provided with a pair of third tapered roller bearings (10) which are symmetrically arranged.

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