CN212251036U - Gear box with reverse gear mechanism - Google Patents

Abstract

The utility model relates to the technical field of gear boxes, in particular to a gear box with a reverse gear mechanism, which comprises a box body, wherein an upper driving component and a lower driving component are arranged in the box body, at least one first gear is axially and movably arranged on a rotating shaft of the upper driving component, the first gear is movably connected with a driven wheel of the lower driving component, and the reverse gear mechanism connected with the driven wheel is arranged in the box body; the reverse gear mechanism comprises a second gear, a third gear and a driving device, the second gear is connected with the third gear through a connecting shaft in a synchronous rotating mode, the driving device controls the first gear to axially move on the rotating shaft to be meshed with the third gear, and therefore the rotating direction of the lower driving assembly is changed. The utility model discloses a design a new mechanism that reverses gear, it is built-in to reverse gear the mechanism simultaneously, solves original ground and bores after installation reverse gear ware, and the whole volume that causes increases, and weight gain can increase too big burden for the user in the use, has increased working strength's problem.

Description

Gear box with reverse gear mechanism

Technical Field

The utility model relates to a gear box technical field refers in particular to a gear box with reverse gear mechanism.

Background

When using the ground auger to dig the earth and dig the hole, traditional ground auger is after boring the hole on the ground, the drill bit of ground auger is whole to be buried in soil, original mode of taking out the drill bit relies on the manpower to lift up the ground auger, and then has pulled out the drill bit, but all be earth on the helical blade of the drill bit after boring the hole, the card is in soil, need use great strength, just can pull out it, the drill bit diameter is big more, the hole is darker, then more hard, need pull out the drill bit to have now with the help of other machinery sometimes even.

In order to solve the problem, a ground auger with a reverse gear appears on the market, for example, Chinese patent 2015200259143 discloses a novel high-power ground auger with a reverse gear, which comprises a gasoline engine power device, a clutch chain wheel, a reverse gear, a reduction gearbox assembly (gear box), a handle and a drill bit; the reduction gearbox assembly comprises a box body and an upper cover, wherein an input wheel assembly, an intermediate wheel assembly and an output wheel assembly are arranged in the box body; the gasoline engine power device is connected with a clutch chain wheel, and the clutch chain wheel is connected with a reverse gear chain wheel through a chain; the reverse gear device is fixed on the upper cover of the reduction gearbox assembly and is connected with an input shaft of the reduction gearbox assembly, a driving wheel on the input shaft is meshed with a first driving wheel of the reduction gearbox assembly, a second driving wheel of the reduction gearbox assembly is meshed with an output wheel of the reduction gearbox assembly, and an output shaft of the reduction gearbox assembly is connected with a drill bit; the handles are fixed on two sides of the box body of the reduction box assembly.

In the practical use process, the reversing gear is arranged on the upper cover of the reduction gearbox (gear box), the integral volume of the speed reducer (gear box) is increased and the weight of the speed reducer (gear box) is increased due to the volume and the weight of the reversing gear, and excessive burden is added to a user and the working strength is increased in the use process; meanwhile, the reverse gear device is externally mounted and limited by the reverse gear device, so that the reduction gearbox (the gear box) can only be connected with the engine through a belt or a chain, the installation of the engine can be influenced by the added reverse gear device, and inconvenience is brought to the production of the ground auger and a user.

Disclosure of Invention

The utility model aims at providing a gear box with reverse gear mechanism through designing a new reverse gear mechanism, and reverse gear mechanism is built-in simultaneously, and new reverse gear mechanism's whole is small and light in weight, solves original ground and bores after installation reverse gear ware, and the whole volume increase that causes, weight increase can increase too big burden for the user in the use, has increased working strength's problem.

The purpose of the utility model is realized like this:

a gear box with a reverse gear mechanism comprises a box body, wherein an upper driving assembly and a lower driving assembly are arranged in the box body, at least one first gear is axially and movably arranged on a rotating shaft of the upper driving assembly, the first gear is movably connected with a driven wheel of the lower driving assembly, and the reverse gear mechanism connected with the driven wheel is arranged in the box body;

the reverse gear mechanism comprises a second gear, a third gear and a driving device, the second gear is connected with the third gear through a connecting shaft in a synchronous rotating mode, the driving device controls the first gear to axially move on the rotating shaft to be meshed with the third gear, and therefore the rotating direction of the lower driving assembly is changed.

Preferably, the rotating shaft adopts a spline shaft, and the first gear is movably clamped with the external spline on the rotating shaft.

Preferably, the diameter of the second gear is smaller than that of the third gear.

Preferably, the driving device comprises a first shifting fork and a first push rod, a fixing position for fixing the first gear is arranged at the inner end of the first shifting fork, the outer end of the first shifting fork is connected with the first push rod, the first push rod is movably arranged on the box body, the upper end of the first push rod is arranged on the outer side of the box body, the first shifting fork can be driven to move in the box body through the first push rod, and the first shifting fork drives the first gear to move on the rotating.

Preferably, the end part of the inner end of the shifting fork is provided with a plurality of arc-shaped edges, and a fixing position for fixing the first gear is formed between every two adjacent arc-shaped edges.

Preferably, at least one guide rod is arranged in the box body, a guide hole is formed in the middle of the shifting fork, one end of the guide rod penetrates through the guide hole, and the shifting fork moves up and down on the guide rod.

Preferably, the fixing seat is arranged on the outer side of the box body, a second push rod is movably arranged on the upper side of the fixing seat, a third push rod is hinged to the lower end of the fixing seat, the lower end of the third push rod is hinged to the middle of the third push rod, the upper end of the second push rod is connected with the first push rod, and the third push rod is pulled to drive the second push rod to move up and down on the fixing seat.

Preferably, the lower end of the second push rod is hinged with an arc-shaped connecting piece, and the lower end of the arc-shaped connecting piece is hinged with the middle of the third push rod and used for driving the second push rod to move.

Preferably, the upper driving assembly comprises an input shaft arranged on the driven disc and a driving wheel meshed with the end part of the input shaft, the power of the engine is transmitted to the driving wheel through the driven disc, and the driven disc drives the driving wheel to rotate.

Preferably, the lower driving assembly comprises a driven wheel connected with the first gear and an output shaft arranged on the driven wheel, and the driven wheel receives power transmitted by the upper driving assembly through the first gear and then outputs the power through the output shaft.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model discloses a new mechanism that reverses gear, the mechanism that reverses gear wholly sets up inside the box, through setting up drive arrangement externally, the work of the mechanism that reverses gear is controlled, and the structure that the mechanism that reverses gear adopted is fairly simple, and original reversing gear ware that weight also compares is light, and the mechanism that reverses gear is built-in simultaneously, can not influence too big to the holistic volume of gear box, uses simple and conveniently, can not bring too big burden and working strength for the user.

2. A movable joint of the gear is connected to the spline shaft in a clamped mode, the gear can move on the spline shaft on the premise of guaranteeing the clamped connection, the first gear can move through the driving device, meshing of the first gear and different gears is achieved, the purpose of changing the rotating direction of the output shaft is achieved, the overall structure is simplified through the adoption of the design, the overall size of the reverse gear mechanism is reduced, and the weight is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.

Fig. 2 is a sectional view of embodiment 1 of the present invention.

Fig. 3 is a schematic view of the internal structure of the hidden box according to embodiment 1 of the present invention.

Fig. 4 is a schematic view of a power transmission according to embodiment 1 of the present invention.

Fig. 5 is a schematic view of the structure of embodiment 1 of the present invention after hiding the driving wheel.

Fig. 6 is a schematic structural view of a shifting fork according to embodiment 1 of the present invention.

Fig. 7 is a schematic view of a double gear according to embodiment 1 of the present invention.

Fig. 8 is a schematic structural view of embodiment 2 of the present invention.

Reference numerals: 1-a box body; 2-an upper drive assembly; 3-a lower drive assembly; 4-a rotating shaft; 5, a first gear; 6-a reverse gear mechanism; 7-duplicate gear; 8-a drive device; 9-external splines; 10-gear two; 11-gear three; 12-a shifting fork; 13-pushing the first rod; 14-arc edge; 15-fixed position; 16-a guide rod; 17-a pilot hole; 18-a fixed seat; 19-push rod two; 20-push rod three; 21-an arc-shaped connecting piece; 22-an input shaft; 23-a driving wheel; 24-a driven disk; 25-a driven wheel; 26-an output shaft; 27-a mounting plate; 28-upper mounting cavity; 29-lower mounting cavity; 30-loading the box body; 31-lower box body; 32-connecting piece.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-2, a gear box with a reverse gear mechanism comprises a box body 1, wherein the box body 1 comprises an upper box body 30 and a lower box body 31, the inside of the box body 1 is hollow, a mounting plate 27 is arranged in the middle of the box body 1, the mounting plate 27 divides the inside of the box body 1 into an upper mounting cavity 28 and a lower mounting cavity 29, the upper mounting cavity 28 is provided with an upper driving assembly 2, and the lower mounting cavity 29 is provided with a lower driving assembly 3. The upper driving assembly 2 comprises an input shaft 22 and a driving wheel 23, the driving wheel 23 is rotatably arranged in an upper mounting cavity 28, the middle part of the input shaft 22 is rotatably arranged on an upper box body 30 through a bearing, the lower end of the input shaft 22 is in a tooth shape and is meshed with the driving wheel 23, the upper end of the input shaft 22 is connected with a driven disc 24, the driven disc 24 is connected with a power output shaft of an engine, a rotating shaft 4 is clamped on the driving wheel 23, and the lower end of the rotating shaft 4 penetrates through a mounting plate 27 and is fixed with a lower box body 31;

the lower driving assembly 3 comprises a driven wheel 25, an output shaft 26 is rotatably arranged in a lower box body 31, the output shaft 26 is arranged on the lower box body 31 through a bearing, the upper end of the output shaft 26 is clamped with the driven wheel 25, a first gear 5 is arranged in a lower mounting cavity 29, and the first gear 5 is movably clamped with the driven wheel 25. Specifically, gear 5 is the joint in pivot 4, and what pivot 4 adopted is the integral key shaft, and gear 5 and the epaxial external splines 9 activity joint of pivot 4, and gear 5 can follow pivot 4 pivoted while, can remove on pivot 4 again.

The power transmission path is that the power is input from the driven disc 24, the driving wheel 23 is driven to rotate through the input shaft 22, the driving wheel 23 rotates to drive the gear one 5 to rotate, the gear one 5 is meshed with the driven wheel 25, so that the driven wheel 25 is driven to rotate, and finally the power is transmitted from the output shaft 26 on the driven wheel 25.

As shown in fig. 1 and 3, in order to change the rotation direction of the output shaft 26, a reverse gear mechanism 6 is arranged in the box body 1, the reverse gear mechanism 6 comprises a duplicate gear 7 and a driving device 8, the duplicate gear 7 is arranged in a lower mounting cavity 29, as shown in fig. 7, a second gear 10 is arranged at the upper end of the duplicate gear 7, a third gear 11 is arranged at the lower end of the duplicate gear 7, the diameter of the third gear 11 is larger than that of the second gear 10, the second gear 10 is always meshed with the driven wheel 25, and the first gear 5 can be meshed with the driven wheel 25 and also can be meshed with the third gear 11.

As shown in fig. 3, engagement with the driven wheel 25 is normal engagement, in which case the output shaft 26 is turned in the same direction as the input shaft 22; as shown in fig. 5, after the first gear 5 is moved to the lower end of the rotating shaft 4 and is meshed with the third gear 11, the first gear 5 drives the duplicate gear 7 to rotate first and then drives the driven gear 25 to rotate, and the rotation direction of the driven gear 25 is changed through the duplicate gear 7, so that the rotating shaft 4 of the input shaft 22 and the output shaft 26 are designed differently, and the function of reverse gear is realized.

As shown in fig. 4, in order to facilitate the movement of the first gear 5 on the rotating shaft 4, the first gear 5 is controlled to rotate by the driving device 8, the driving device 8 comprises a shifting fork 12 and a first push rod 13 which are movably arranged in the lower mounting cavity 29, as shown in fig. 5 and 6, a plurality of arc-shaped edges 14 are arranged at the inner end of the shifting fork 12, a gap is reserved between every two adjacent arc-shaped edges 14, the gap is used for placing a fixing position 15 of the first gear 5, the arc-shaped edges 14 are arranged in a manner of being designed to be matched with the second rotating shaft 4, so that the purpose of placing the first gear is achieved without influencing the rotating shaft 4, the arc-shaped edges 14 are designed, the inner sides of the arc-shaped edges 14 can surround the rotating shaft 4, interference is reduced, and when the first gear needs to be disassembled, the rotating. The first push rod 13 is connected with the outer end of the shifting fork 12, the first push rod 13 and the shifting fork 12 are perpendicular to each other, the first push rod 13 is movably arranged on the upper box body 30 through a linear bearing, the upper end of the first push rod 13 is arranged on the outer side of the upper box body 30, the shifting fork 12 can be controlled to move up or down integrally through pressing or pulling the first push rod 13, accordingly, the first gear 5 is controlled to be meshed with the second gear 10 and the driven wheel 25 respectively, adjustment of steering of the output shaft 26 is achieved, friction between the first push rod 13 and the upper box body 30 can be reduced through the arranged linear bearing, and the purpose of saving labor is achieved.

The utility model discloses a setting the mechanism 6 that reverses gear wholly in the lower installation cavity 29 of gear box, just can control the position of gear one 5 through the outside push rod, realize the steering adjustment of output shaft 26, the mechanism 6 that reverses gear of design can not interfere with parts such as the engine that the external world is connected, can not exert an influence to the production and the installation of gear box; secondly, the overall structure of the reverse gear mechanism 6 of the technical scheme is simple, the weight is lighter than that of the existing reverse gear device, the size is small, the use is simple and convenient, and overlarge burden and working strength can not be brought to a user.

In order to ensure that the shifting fork 12 cannot move in disorder in the lower mounting cavity 29, a plurality of guide rods 16 are arranged in the lower mounting cavity 29, corresponding guide holes 17 are formed in the shifting fork 12, the guide rods 16 penetrate through the guide holes 17, the shifting fork 12 cannot move transversely under the constraint of the guide rods 16, the vertical movement is not affected, and the normal movement of the first gear 5 is ensured.

As shown in fig. 1, a fixing seat 18 is arranged on the outer side of the box body 1, a fixing sleeve is arranged at the upper end of the fixing seat 18, a second push rod 19 is movably arranged in the fixing sleeve, the upper end of the second push rod 19 is connected with a first push rod 13 through a connecting sheet 32, a third push rod 20 is hinged at the lower end of the fixing seat 18, an arc-shaped connecting piece 21 is hinged at the middle of the third push rod 20, the upper end of the arc-shaped connecting piece 21 is hinged with the lower end of the second push rod 19, the second push rod 19 is driven to move up and down by pulling the third push rod 20, meanwhile, a shifting fork 12 in the box.

The driving device 8 controls the movement of the gear through the lever principle, the driving device 8 can achieve the purpose of saving labor, the arc-shaped connecting piece 21 is arranged to avoid interference of the arc-shaped connecting piece 21 on the movement of the second push rod 19, after the third push rod 20 is pulled, the arc-shaped connecting piece 21 is always arranged on the side face of the second push rod 19 and cannot interfere with the movement of the second push rod 19, meanwhile, the movement distance of the second push rod 19 can be increased, and the movement position of the first gear 5 can be more accurate and in place.

Example 2:

the difference from the embodiment 1 is that the embodiment 2 does not adopt the duplicate gear 7, and the adopted technical scheme is that a second gear 10 and a third gear 11 are arranged, the second gear 10 and the third gear 11 can be provided with two ends of a connecting shaft, the purpose of synchronous rotation is realized through the connecting shaft, the second gear 10 is always meshed with a driven wheel 25, the third gear is arranged on the side surface of the driven wheel three 11, and the first gear 5 is driven by a driving device to move, so that the movable clamping connection with the driven wheel 25 or a driven wheel in the lower driving assembly 3 is realized, and the conversion of the rotation direction of the lower driving assembly 3 is realized.

Secondly, two gears I5 can be arranged, the two gears I5 are controlled to move up and down through the shifting forks, when the gears I5 move up, the upper gears I5 are meshed with the driven wheels 25, the lower gears 5 idle, and other gears are not contacted, so that normal rotation is realized; when the reverse rotation is needed, the two gears I5 are simultaneously moved downwards through the shifting fork, so that the upper gear I5 is separated from the driven wheel 25, and the lower gear I5 is meshed with the gear III 11, so that the reverse rotation of the driven wheel is realized. Reference may be made in particular to fig. 8.

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 understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A gearbox with reverse gear mechanism characterized in that: the transmission device comprises a box body (1), wherein an upper driving assembly (2) and a lower driving assembly (3) are arranged in the box body (1), at least one first gear (5) is axially and movably arranged on a rotating shaft (4) of the upper driving assembly (2), the first gear (5) is movably connected with a driven wheel (25) of the lower driving assembly (3), and a reverse gear mechanism (6) connected with the driven wheel (25) is arranged in the box body (1);

the reverse gear mechanism (6) comprises a second gear (10), a third gear (11) and a driving device (8), the second gear (10) is connected with the third gear (11) through a connecting shaft in a synchronous rotating mode, the driving device (8) controls the first gear (5) to axially move on the rotating shaft (4) to be meshed with the third gear (11), and therefore the rotating direction of the lower driving assembly (3) is converted.

2. A gear box with a reverse gear mechanism according to claim 1, wherein: a spline shaft is adopted by the rotating shaft (4), and the first gear (5) is movably clamped with the external spline (9) on the rotating shaft (4).

3. A gear box with a reverse gear mechanism according to claim 1, wherein: the diameter of the second gear (10) is smaller than that of the third gear (11).

4. A gear box with a reverse gear mechanism according to claim 1, wherein: the driving device (8) comprises a shifting fork (12) and a first push rod (13), a fixing position (15) used for fixing the first gear (5) is arranged at the inner end of the shifting fork (12), the outer end of the shifting fork (12) is connected with the first push rod (13), the first push rod (13) is movably arranged on the box body (1), the upper end of the first push rod is arranged on the outer side of the box body (1), the shifting fork (12) can be driven to move in the box body (1) through the first push rod (13), and the shifting fork (12) drives the first gear (5) to move on the rotating shaft (4).

5. A gearbox with a reverse gear mechanism according to claim 4, characterized in that: the end part of the inner end of the shifting fork (12) is provided with a plurality of arc-shaped edges (14), and a fixing position (15) for fixing the first gear (5) is formed between every two adjacent arc-shaped edges (14).

6. A gearbox with a reverse gear mechanism according to claim 4 or 5, characterized in that: at least one guide rod (16) is arranged in the box body (1), a guide hole (17) is formed in the middle of the shifting fork (12), one end of the guide rod (16) penetrates through the guide hole (17), and the shifting fork (12) moves up and down on the guide rod (16).

7. A gearbox with a reverse gear mechanism according to claim 4, characterized in that: the outer side of the box body (1) is provided with a fixed seat (18), the upper side of the fixed seat (18) is movably provided with a second push rod (19), the lower end of the fixed seat (18) is hinged with a third push rod (20), the lower end of the second push rod (19) is hinged with the middle of the third push rod (20), the upper end of the second push rod (19) is connected with the first push rod (13), and the third push rod (20) is pulled to drive the second push rod (19) to move up and down on the fixed seat (18.

8. A gearbox with a reverse gear mechanism according to claim 7, characterized in that: the lower end of the second push rod (19) is hinged with an arc-shaped connecting piece (21), and the lower end of the arc-shaped connecting piece (21) is hinged with the middle of the third push rod (20) and used for driving the second push rod (19) to move.

9. A gear box with a reverse gear mechanism according to claim 1, wherein: go up drive assembly (2) including input shaft (22) that set up on driven disk (24) and action wheel (23) with input shaft (22) tip meshing, the power of engine is transmitted for action wheel (23) through driven disk (24), and driven disk (24) drive action wheel (23) rotate.

10. A gear box with a reverse gear mechanism according to claim 1, wherein: the lower driving assembly (3) comprises a driven wheel (25) connected with the first gear (5) and an output shaft (26) arranged on the driven wheel (25), and the driven wheel (25) receives power transmitted by the upper driving assembly (2) through the first gear (5) and then outputs the power through the output shaft (26).

Images