CN218718535U - Coaxial gearbox for pipe making machine - Google Patents

Abstract

The utility model discloses a coaxial gearbox for tuber, including the box, the box is formed by a front side for open-ended casing and a rear side for open-ended casing through the screw connection, the left side lower part of box and right side lower part are all fixed to inlay and are equipped with a logical lid, all rotate in the left logical lid and install the input gear shaft, the logical lid internal rotation on right side installs the output shaft, the left side upper portion and the right side upper portion of box are all fixed to inlay and are equipped with stifle, rotate between two corresponding stifle and install the axle of crossing; the utility model discloses have the level four variable speed function, can also loosen the handle and make compression spring no longer atress after shifting to compression spring under the compression state can promote the sliding sleeve that corresponds and move backward, and the sliding sleeve drives the bolt that corresponds and moves backward, thereby makes its inside of reinserting the slot, and then locks the rotation of handle seat, thereby current gear locks, can satisfy the user demand.

Description

Coaxial gearbox for pipe making machine

Technical Field

The utility model relates to a gearbox technical field especially relates to a coaxial-type gearbox for tuber.

Background

The gear box is a device for changing the rotation speed ratio and the movement direction, is used on automobiles, tractors, ships, machine tools and various machines, and is used for changing the torque, the rotation speed and the movement direction transmitted from a driving shaft to a driven shaft according to different working conditions; the gear-driven gearbox generally comprises a gearbox shell and a plurality of gear pairs, and under the current requirements of increasingly refined classification and refinement, the gearbox also provides higher requirements for the loader gearbox, the gearbox is required to be driven by two wheels, namely two wheels, and driven by four wheels, namely four wheels, and the existing gearbox does not have a gear locking and reducing function, so that the instability of gears is easily caused in the using process, the using requirements can not be met, and therefore the coaxial gearbox for the pipe making machine is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the coaxial-type gearbox who provides for tuber.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a coaxial-type gearbox for tuber, includes the box, the box is formed for open-ended casing and a rear side for open-ended casing through the screw connection by a front side, the left side lower part and the right side lower part of box all fix to inlay and are equipped with a logical lid, all rotate in the left logical lid and install the input gear shaft, the logical lid internal rotation on right side installs the output shaft, the left side upper portion and the right side upper portion of box all fix to inlay and are equipped with the blank cap, rotate between two corresponding blank caps and install the cross axle, cross the equal slip cover in the outside of axle and output shaft and be equipped with the sliding tooth cover, cross the axle and the outside of output shaft and all overlap and be equipped with driven gear, the input gear shaft all overlaps with the outside of cross axle and be equipped with a driving gear that meshes with corresponding driven gear, the outside of cross axle overlaps and is equipped with first gear and second gear, the outside cover of output shaft overlaps and is equipped with a fourth gear that meshes with first gear, the front side of box is fixed with two covers, the inboard that the cover is in same position and the adjusting mechanism that rotates is installed and is used for the locking mechanism that shifts gears, it is used for the adjustment mechanism to cooperate with the adjusting mechanism to lock.

As a further preferred feature of the present technical solution, the adjusting mechanism includes a shift shaft, a crank, a shift block, a handle seat and an operating rod, the shift shaft is rotatably mounted between the inner side of the cover and the inner side of the plug at the same front and rear positions, the crank is sleeved on the outer side of the shift shaft, the shift block is fixedly inserted into the lower portion of the rear side of the crank, the shift block is hinged to a corresponding sliding gear sleeve, the front end of the shift shaft extends to the outer side of the box, the handle seat is fixedly sleeved on the front portion of the outer side of the shift shaft and is movably connected with the front side of the box, the operating rod is fixedly inserted into the top of the handle seat, the top of the outer side of the operating rod is sleeved with a plastic handle, the operating rod drives the corresponding handle seat to rotate, the handle seat drives the corresponding shift shaft to rotate, the shift shaft drives the corresponding crank to rotate, the crank drives the corresponding shift block to rotate, and the shift block drives the corresponding sliding gear sleeve to move, thereby implementing the gear shifting operation.

As a further preferred feature of the present invention, the locking mechanism includes a latch, a compression spring and a handle, a groove is formed in a lower portion of a rear side of the handle seat, a through hole communicated with the groove is formed in a lower portion of a front side of the handle seat, two slots are formed in a lower portion of a front side of the box body, the slot is located at a same horizontal position as the corresponding through hole, the latch is slidably installed inside the through hole, a rear end of the latch is inserted into an interior of the corresponding slot, a sliding sleeve is fixedly sleeved on an outer side of the latch, the sliding sleeve is slidably connected to an inner side of the groove, the compression spring is sleeved on an outer side of the latch, the compression spring is welded between an inner wall of the front side of the corresponding groove and a front side of the sliding sleeve, the handle is fixedly sleeved on a front portion of the outer side of the latch, the latch is driven by the handle to move forward, the sliding sleeve is moved forward to compress the corresponding compression spring, the latch is moved out of the corresponding slot, and then the rotational locking of the handle seat is released, and the handle is no longer stressed, so that the compression spring in a state pushes the corresponding sliding sleeve to move backward, and then the sliding sleeve is inserted into the slot to lock the handle seat again.

As a further preferred feature of the present invention, two first distance rings are sleeved on the outside of the shift shaft, the first distance ring on the front side is located between the corresponding crank and the corresponding sleeve cover, the first distance ring on the rear side is located on the front side of the corresponding block cover, and two O-ring seals are disposed between the shift shaft and the corresponding sleeve cover.

As a further preferred feature of this embodiment, the third bearings are fixedly installed on the outer sides of the input gear shaft, the output shaft and the intermediate shaft, a plurality of first bearings are fixedly installed on the outer sides of the output shaft and the intermediate shaft, the outer rings of the first bearings are respectively and fixedly connected to the inner sides of the corresponding driven gear, the first gear and the third gear, the outer ring of the third bearing is fixedly connected to the box, a second distance ring is installed on the outer sides of the input gear shaft and the intermediate shaft, the second distance ring is located between the corresponding third bearing and the driving gear, a third distance ring, a fourth distance ring and a keyway spacer are installed on the outer side of the intermediate shaft, the outer sides of the input gear shaft and the output shaft are respectively and fixedly connected to the box, the third distance ring is located between the corresponding first bearing and second bearing, the fourth distance ring is located between the corresponding second bearing and the second gear, the keyway spacer is located between the corresponding second gear and the driving gear, a fifth distance ring is installed on the outer sides of the intermediate shaft and the output shaft, the fifth distance ring is located between the corresponding third bearing and the outer side of the intermediate shaft, and the sixth distance ring are located between the corresponding first bearing, and the outer side of the output shaft are installed between the corresponding sixth bearing.

As a further preferred aspect of the present invention, spring stoppers for holes are bonded and fixed to inner walls of the two driven gears, the first gear, and the third gear, the spring stoppers for two holes located above are respectively disposed on the left side of the inside of the corresponding driven gear and the right side of the inside of the first gear, and the spring stoppers for two holes located below are respectively disposed on the right side of the inside of the corresponding driven gear and the left side of the inside of the third gear.

As a further preferable feature of the present invention, a spring catch for a shaft is fixedly fitted to an outer front portion of the dial block, and a rear side of the spring catch for a shaft contacts a front side of the crank.

As a further preferred of this technical scheme, the front side fixed mounting of box has the gear sign, a plurality of first keyways have all been seted up in the outside of cross axle and input gear shaft, wherein the quantity of the first keyway in the cross axle outside is two, the quantity of the first keyway in the input gear shaft outside is one, be equipped with first key piece in the first keyway, cross the axle through two first key pieces that correspond respectively with driving gear and second gear key-type connection, the input gear shaft is through the first key piece that corresponds and driving gear key-type connection, the second keyway has been seted up in the outside of dialling the shelves axle, be equipped with the second key piece in the second keyway, it connects with the crank key-type through the second key piece that corresponds to dial the shelves axle.

As a further preferred of this technical scheme, two eyebolts are installed at the top of box, and the outside of input gear axle and output shaft all is equipped with the oil blanket, the outside and the box fixed connection of oil blanket, and the front side of box is equipped with oil pointer and plug screw.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses have the level four variable speed function, can also loosen the handle and make compression spring no longer atress after shifting to compression spring under the compression state can promote the sliding sleeve that corresponds and move backward, and the sliding sleeve drives the bolt that corresponds and moves backward, thereby makes its inside of reinserting the slot, and then locks the rotation of handle seat, thereby current gear locks, can satisfy the user demand.

Drawings

Fig. 1 is a front sectional view of a coaxial transmission for a pipe making machine according to the present invention;

fig. 2 is a left side structural sectional view of a coaxial transmission for a pipe making machine according to the present invention;

fig. 3 is a front view structural schematic diagram of a coaxial gearbox for a pipe making machine according to the present invention.

In the figure: 1. a box body; 2. a sliding gear sleeve; 3. a driving gear; 4. a driven gear; 5. an input gear shaft; 6. a first gear; 7. a second gear; 8. a third gear; 9. an output shaft; 10. A bridge shaft; 11. a shift shaft; 12. covering the blank with a cover; 13. opening the cover; 14. a fourth gear; 15. a first pitch ring; 16. a second distance ring; 17. a third distance ring; 18. a fourth distance ring; 19. a keyway spacer sleeve; 20. a fifth distance ring; 21. a sixth distance ring; 22. a crank; 23. covering; 24. blocking the cover; 25. shifting blocks; 26. a handle seat; 27. an operating lever; 28. a bolt; 29. A handle; 30. a gear label; 31. first of all a bearing; 32. a second bearing; 33. a third bearing; 34. a spring catch for the hole; 35. a spring catch for the shaft; 36. a compression spring; 37. a first key block; 38. a second key block; 39. a lifting eye screw; 40. oil sealing; 41. an O-shaped sealing ring; 42. a screw; 43. oil marks; 44. a plug screw; 45. a plastic handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1-3, a coaxial gearbox for a tube making machine comprises a box body 1, the box body 1 is formed by connecting a shell with an opening on the front side and a shell with an opening on the rear side through screws 42, a through cover 13 is fixedly embedded on the lower left side and the lower right side of the box body 1, an input gear shaft 5 is rotatably installed in the through cover 13 on the left side, an output shaft 9 is rotatably installed in the through cover 13 on the right side, blank covers 12 are fixedly embedded on the upper left side and the upper right side of the box body 1, a gap shaft 10 is rotatably installed between the two corresponding blank covers 12, a sliding gear sleeve 2 is slidably installed on the outer sides of the gap shaft 10 and the output shaft 9, a driven gear 4 is respectively installed on the outer sides of the gap shaft 10 and the input gear shaft 5, a driving gear 3 meshed with the corresponding driven gear 4 is respectively installed on the outer sides of the gap shaft 10, a first gear 6 and a second gear 7 are installed on the outer sides of the gap shaft 10, a third gear 8 engaged with the second gear 7 is sleeved outside the output shaft 9, a fourth gear 14 engaged with the first gear 6 is sleeved outside the output shaft 9, two sleeve covers 23 are fixedly embedded on the front side of the box body 1, two blanking covers 24 are fixedly embedded on the rear side of the box body 1, teeth matched with the sliding gear sleeves 2 are arranged on the driven gear 4, the first gear 6 and the third gear 8 close to the inner sides of the corresponding sliding gear sleeves 2, an adjusting mechanism matched with the corresponding sliding gear sleeves 2 is rotatably installed on the inner sides of the sleeve covers 23 and the inner sides of the blanking covers 24 in the same front and rear positions and is used for carrying out variable-speed gear shifting operation, the adjusting mechanism comprises a shifting shaft 11, a crank 22, a shifting block 25, a handle seat 26 and an operating rod 27, the shifting shaft 11 is rotatably installed between the inner side of the sleeve cover 23 and the inner sides of the blanking covers 24 in the same front and rear positions, the crank 22 is sleeved on the outer side of the shift shaft 11, a first through hole and a second through hole are respectively formed in the upper rear side and the lower rear side of the crank 22, the shift shaft 11 is inserted into the corresponding first shaft hole, the shift block 25 is fixedly inserted into the corresponding second through hole, the shift block 25 is hinged to the corresponding sliding gear sleeve 2, the front end of the shift shaft 11 extends to the outer side of the box body 1, the handle seat 26 is fixedly sleeved on the front portion of the outer side of the shift shaft 11 and is in sliding connection with the front side of the box body 1, the operating rod 27 is fixedly inserted into the top of the handle seat 26, the top of the outer side of the operating rod 27 is sleeved with a plastic handle 45, the left shift block 25 is connected with the sliding gear sleeve 2 above, the right shift block 25 is connected with the sliding gear sleeve 2 below, the operating rod 27 drives the corresponding shift seat 26 to rotate, the handle seat 26 drives the corresponding shift shaft 11 to rotate, the shift shaft 11 drives the corresponding crank 22 to rotate, the crank 22 drives the corresponding shift block 25 to rotate, and the shift block 25 drives the corresponding sliding gear sleeve 2 to move into the corresponding gear to realize gear shifting operation;

the handle seat 26 is provided with a locking mechanism matched with the box body 1, the locking mechanism is used for carrying out gear shifting locking, the locking mechanism comprises a bolt 28, a compression spring 36 and a handle 29 which are in a compressed state, the lower part of the rear side of the handle seat 26 is provided with a groove, the lower part of the front side of the handle seat 26 is provided with a through hole communicated with the groove, the lower part of the front side of the box body 1 is provided with two slots which are in the same horizontal position with the corresponding through hole, the bolt 28 is slidably arranged inside the through hole, the rear end of the bolt 28 is inserted into the corresponding slot, the outer side of the bolt 28 is fixedly sleeved with a sliding sleeve, the sliding sleeve is slidably connected to the inner side of the groove, the compression spring 36 is sleeved outside the bolt 28, the compression spring 36 is welded between the inner wall of the front side of the corresponding groove and the front side of the sliding sleeve, the handle 29 is fixedly sleeved in the front part of the outer side of the bolt 28, the bolt 28 is driven by the handle 29 to move forwards, so that the bolt 28 is moved out of the corresponding slot and drives the sliding sleeve to move forwards, the compression spring 36 to compress, the bolt 28 is moved out of the corresponding slot after the corresponding slot is moved out of the corresponding slot, and then the handle seat is pushed to move backwards, so that the sliding sleeve can not push the corresponding compression spring 36, and the handle seat can be in a corresponding handle 26, and then the handle seat, and the handle seat can be in a corresponding handle 26, and the handle 28, so that the handle can be in a corresponding state, and can be pushed again, and the handle seat, and then the handle seat can be pushed, and the handle 28, and the handle can be pushed backwards.

In the utility model, two first distance rings 15 are sleeved on the outer side of the shift shaft 11, the first distance ring 15 on the front side is positioned between the corresponding crank 22 and the sleeve cover 23, the first distance ring 15 on the rear side is positioned on the front side of the corresponding plug cover 24, two O-shaped sealing rings 41 are arranged between the shift shaft 11 and the corresponding sleeve cover 23, the O-shaped sealing rings 41 are sleeved on the outer side of the shift shaft 11, two annular grooves are arranged on the inner side wall of the sleeve cover 23, the O-shaped sealing rings 41 are fixedly connected with the inner side wall of the corresponding annular grooves, and the O-shaped sealing rings 41 can ensure the sealing performance between the shift shaft 11 and the corresponding sleeve cover 23;

the outer sides of the input gear shaft 5, the output shaft 9 and the intermediate shaft 10 are fixedly sleeved with third bearings 33, the outer sides of the output shaft 9 and the intermediate shaft 10 are fixedly sleeved with a plurality of first bearings 31, the outer rings of the first bearings 31 are respectively and fixedly connected with the inner sides of the corresponding driven gear 4, the first gear 6 and the third gear 8, the outer ring of the third bearing 33 is fixedly connected with the box body 1, the outer sides of the input gear shaft 5 and the intermediate shaft 10 are respectively sleeved with a second distance ring 16, the second distance ring 16 is positioned between the corresponding third bearing 33 and the driving gear 3, the outer side of the intermediate shaft 10 is sleeved with a third distance ring 17, a fourth distance ring 18 and a key groove spacer 19, the outer sides of the intermediate shaft 10, the input gear shaft 5 and the output shaft 9 are respectively sleeved with a second bearing 32, the outer side of the second bearing 32 is fixedly connected with the box body 1, the third distance ring 17 is positioned between the corresponding first bearing 31 and the second bearing 32, the fourth distance ring 18 is positioned between the corresponding second bearing 32 and the second gear 7, the key groove 19 is positioned between the corresponding second bearing 7 and the key groove 3, the outer side of the intermediate shaft 10 and the driving gear 9 is positioned between the corresponding sixth bearing 20, the output shaft 21 and the corresponding third distance ring 21, and the output shaft 21 are positioned between the corresponding third distance ring 21;

spring blocking pieces 34 for holes are fixedly bonded on the inner walls of the two driven gears 4, the first gear 6 and the third gear 8, the spring blocking pieces 34 for holes are used for preventing the gears from falling off from corresponding bearings, the spring blocking pieces 34 for two holes positioned above are respectively arranged on the left side inside the corresponding driven gear 4 and the right side inside the first gear 6, and the spring blocking pieces 34 for two holes positioned below are respectively arranged on the right side inside the corresponding driven gear 4 and the left side inside the third gear 8;

the front part of the outer side of the shifting block 25 is fixedly sleeved with a spring blocking piece 35 for a shaft, the rear side of the spring blocking piece 35 for the shaft is in contact with the front side of the crank 22, the front side of the box body 1 is fixedly provided with a gear label 30 for displaying the current gear, the outer sides of the bridge shaft 10 and the input gear shaft 5 are respectively provided with a plurality of first key slots, the number of the first key slots on the outer side of the bridge shaft 10 is two, the number of the first key slots on the outer side of the input gear shaft 5 is one, a first key block 37 is arranged in each first key slot, the bridge shaft 10 is respectively in key connection with the driving gear 3 and the second gear 7 through the corresponding two first key blocks 37, the input gear shaft 5 is in key connection with the driving gear 3 through the corresponding first key block 37, the outer side of the shifting shaft 11 is provided with a second key slot, a second key block 38 is arranged in each second key slot, and the shifting shaft 11 is in key connection with the crank 22 through the corresponding second key block 38;

two lifting eye screws 39 used for lifting the device are mounted at the top of the box body 1, two screw holes are formed in the top of the box body 1, the lifting eye screws 39 are in threaded connection with the inner portions of the corresponding screw holes, oil seals 40 are sleeved on the outer sides of the input gear shaft 5 and the output shaft 9, the outer side of each oil seal 40 is fixedly connected with the box body 1, and an oil pointer 43 and a screw plug 44 are arranged on the front side of the box body 1; the utility model discloses have the level four speed change function, can also be after shifting, thereby loosen handle 29 and make compression spring 36 atress no longer to compression spring 36 that is in under the compression state can promote the sliding sleeve that corresponds and move backward, and the sliding sleeve drives the bolt 28 that corresponds and moves backward, thereby makes its inside of reinserting the slot, and then locks handle seat 26's rotation, thereby current gear locks, can satisfy the user demand.

The working principle is as follows: when the gear shifting device is used, a worker firstly drives the bolt 28 to move forwards through the handle 29, so that the bolt 28 moves out of the corresponding slot and drives the sliding sleeve to move forwards, the sliding sleeve moves forwards to compress the corresponding compression spring 36, the rotation locking of the handle seat 26 is released after the bolt 28 moves out of the corresponding slot, then the corresponding handle seat 26 is driven to rotate through the operating rod 27, the handle seat 26 drives the corresponding shifting shaft 11 to rotate, the shifting shaft 11 drives the corresponding crank 22 to rotate, the crank 22 drives the corresponding shifting block 25 to rotate, the shifting block 25 drives the corresponding sliding gear sleeve 2 to move into the corresponding gear, so that the gear shifting operation is realized, after the gear shifting is finished, the handle 29 is released, so that the compression spring 36 is not stressed any more, the compression spring 36 in a compressed state pushes the corresponding sliding sleeve to move backwards, the sliding sleeve drives the corresponding bolt 28 to move backwards, so that the bolt is inserted into the slot again, and further locks the rotation of the handle seat 26;

when a gear needs to be used, a worker pushes the upper sliding gear sleeve 2 to move leftwards through the left shifting block 25, so that the upper sliding gear sleeve 2 moves into the corresponding driven gear 4, teeth on the outer side of the sliding gear sleeve 2 are meshed with teeth on the inner side of the corresponding driven gear 4, the right shifting block 25 pushes the lower sliding gear sleeve 2 to move rightwards, so that the lower sliding gear sleeve 2 moves into the corresponding driven gear 4, teeth on the outer side of the sliding gear sleeve 2 are meshed with teeth on the inner side of the corresponding driven gear 4, then the input gear shaft 5 drives the driving gear 3 to rotate, the driving gear 3 drives the corresponding driven gear 4 to rotate, the driven gear 4 drives the sliding gear sleeve 2 in the driven gear to rotate, the sliding gear sleeve 2 drives the corresponding bridge shaft 10 to rotate, the bridge shaft 10 drives the corresponding driving gear 3 to rotate, the driving gear 3 drives the sliding gear sleeve 2 to rotate through the corresponding driven gear 4, and the sliding gear sleeve 2 drives the corresponding output shaft 9 to rotate;

when a second gear needs to be used, a worker pushes the upper sliding gear sleeve 2 to move leftwards through the left shifting block 25, so that the upper sliding gear sleeve 2 moves into the corresponding driven gear 4, teeth on the outer side of the sliding gear sleeve 2 are meshed with teeth on the inner side of the corresponding driven gear 4, the lower sliding gear sleeve 2 is pushed to move leftwards through the right shifting block 25, so that the lower sliding gear sleeve 2 moves into the corresponding third gear 8, teeth on the outer side of the sliding gear sleeve 2 are meshed with teeth on the inner side of the corresponding third gear 8, then the input gear shaft 5 drives the driving gear 3 to rotate, the driving gear 3 drives the corresponding driven gear 4 to rotate, the driven gear 4 drives the sliding gear sleeve 2 in the driven gear to rotate, the sliding gear sleeve 2 drives the corresponding through-axle shaft 10 to rotate, the through-axle shaft 10 drives the second gear 7 to rotate, the second gear 7 drives the sliding gear sleeve 2 to rotate through the third gear 8, and the sliding gear sleeve 2 drives the corresponding output shaft 9 to rotate;

when a gear is needed to be used, a worker pushes the upper sliding gear sleeve 2 to move rightwards through the left shifting block 25, so that the upper sliding gear sleeve 2 moves into the first gear 6, teeth on the outer side of the sliding gear sleeve 2 are meshed with teeth inside the first gear 6, the lower sliding gear sleeve 2 is pushed to move leftwards through the right shifting block 25, so that the lower sliding gear sleeve 2 moves into the corresponding third gear 8, teeth on the outer side of the sliding gear sleeve 2 are meshed with teeth inside the corresponding third gear 8, then the input gear shaft 5 drives the fourth gear 14 to rotate, the fourth gear 14 drives the first gear 6 to rotate, the first gear 6 drives the sliding gear sleeve 2 inside the first gear to rotate, the sliding gear sleeve 2 drives the corresponding bridge shaft 10 to rotate, the bridge shaft 10 drives the corresponding driving gear 3 to rotate, the driving gear 3 drives the sliding gear sleeve 2 to rotate through the corresponding driven gear 4, and the sliding gear sleeve 2 drives the corresponding output shaft 9 to rotate;

when a gear eight needs to be used, a worker pushes the upper sliding gear sleeve 2 to move rightwards through the left shifting block 25, so that the upper sliding gear sleeve 2 moves into the first gear 6, teeth on the outer side of the sliding gear sleeve 2 are meshed with teeth on the inner side of the first gear 6, the lower sliding gear sleeve 2 is pushed to move leftwards through the right shifting block 25, so that the lower sliding gear sleeve 2 moves into the corresponding third gear 8, teeth on the outer side of the sliding gear sleeve 2 are meshed with teeth on the inner side of the corresponding third gear 8, then the input gear shaft 5 can drive the fourth gear 14 to rotate, the fourth gear 14 drives the first gear 6 to rotate, the first gear 6 drives the sliding gear sleeve 2 in the first gear to rotate, the sliding gear sleeve 2 drives the corresponding through-axle shaft 10 to rotate, the through-axle shaft 10 drives the second gear 7 to rotate, the second gear 7 drives the sliding gear sleeve 2 to rotate through the third gear 8, and the corresponding output shaft 9 of the sliding gear sleeve 2 rotates.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (9)

1. A coaxial gearbox for a tube making machine comprises a box body (1), the box body (1) is formed by connecting a shell with an opening at the front side and a shell with an opening at the rear side through screws (42), and is characterized in that a through cover (13) is fixedly embedded at the lower part of the left side and the lower part of the right side of the box body (1), an input gear shaft (5) is rotatably installed in the through cover (13) at the left side, an output shaft (9) is rotatably installed in the through cover (13) at the right side, a blank cover (12) is fixedly embedded at the upper part of the left side and the upper part of the right side of the box body (1), a bridge passing shaft (10) is rotatably installed between the two corresponding blank covers (12), a sliding gear sleeve (2) is slidably installed at the outer sides of the bridge passing shaft (10) and the output shaft (9), a driven gear (4) is respectively installed at the outer sides of the bridge passing shaft (10), a driving gear (3) meshed with the corresponding driven gear (4) is installed at the outer sides of the input gear shaft (5) and the bridge passing shaft (10), a first gear (6) and a second gear (7) are respectively installed at the outer side of the output shaft (9), a third gear (8) are meshed with a fourth gear (7) respectively installed at the outer side of the output shaft (9), the front side of box (1) is fixed to be inlayed and is equipped with two upper cover (23), the rear side of box (1) is fixed to be inlayed and is equipped with two blanking caps (24), and the inboard of upper cover (23) and the inboard of blanking cap (24) that are in same front and back position rotate and install and correspond sliding tooth cover (2) matched with adjustment mechanism, install a locking mechanical system with box (1) matched with on the adjustment mechanism.

2. The coaxial gearbox for the pipe making machine as claimed in claim 1, wherein the adjusting mechanism comprises a shift shaft (11), a crank (22), a shift block (25), a handle seat (26) and an operating rod (27), the shift shaft (11) is rotatably installed between the inner side of a sleeve cover (23) and the inner side of a blocking cover (24) in the same front and rear positions, the crank (22) is sleeved on the outer side of the shift shaft (11), the shift block (25) is fixedly inserted in the lower portion of the rear side of the crank (22), the shift block (25) is hinged to a corresponding sliding gear sleeve (2), the front end of the shift shaft (11) extends to the outer side of the box body (1), the handle seat (26) is fixedly sleeved on the front portion of the outer side of the shift shaft (11) and is in sliding connection with the front side of the box body (1), the operating rod (27) is fixedly inserted in the top of the handle seat (26), and a plastic handle (45) is sleeved on the top of the outer side of the operating rod (27).

3. The coaxial gearbox for the pipe making machine as claimed in claim 2, characterized in that the locking mechanism comprises a bolt (28), a compression spring (36) and a handle (29), a groove is formed in the lower rear portion of the handle seat (26), a through hole communicated with the groove is formed in the lower front portion of the handle seat (26), two slots located at the same horizontal position as the corresponding through hole are formed in the lower front portion of the box body (1), the bolt (28) is slidably mounted inside the through hole, the rear end of the bolt (28) is inserted into the corresponding slots, a sliding sleeve is fixedly sleeved on the outer side of the bolt (28), the sliding sleeve is slidably connected to the inner side of the groove, the compression spring (36) is sleeved on the outer side of the bolt (28), the compression spring (36) is welded between the inner wall of the corresponding groove and the front side of the sliding sleeve, and the handle (29) is fixedly sleeved on the front portion of the outer side of the bolt (28).

4. Coaxial gearbox for pipe making machines according to claim 2, characterized in that the shift shaft (11) is externally sheathed with two first distance rings (15), the first distance ring (15) on the front side being located between the corresponding crank (22) and the sleeve cap (23), the first distance ring (15) on the rear side being located on the front side of the corresponding plug cap (24), two O-rings (41) being provided between the shift shaft (11) and the corresponding sleeve cap (23).

5. The coaxial gearbox for the pipe making machine as claimed in claim 4, characterized in that the outer sides of the input gear shaft (5), the output shaft (9) and the intermediate shaft (10) are fixedly sleeved with third bearings (33), the outer sides of the output shaft (9) and the intermediate shaft (10) are fixedly sleeved with a plurality of first bearings (31), the outer rings of the first bearings (31) are respectively fixedly connected to the inner sides of the corresponding driven gear (4), the first gear (6) and the third gear (8), the outer rings of the third bearings (33) are fixedly connected with the box body (1), the outer sides of the input gear shaft (5) and the intermediate shaft (10) are respectively sleeved with second distance rings (16), the second distance rings (16) are located between the corresponding third bearings (33) and the driving gear (3), the outer sides of the intermediate shaft (10) are sleeved with third distance rings (17), fourth distance rings (18) and the keyway distance rings (19), the outer sides of the intermediate shaft (10), the input gear shaft (5) and the output shaft (9) are respectively sleeved with the third distance rings (32), the outer sides of the second bearings (32) are located between the corresponding second distance rings (32) and the second distance rings (32), and the second distance rings (32) are connected with the second distance rings (32), the key groove spacer bush (19) is located between the corresponding second gear (7) and the driving gear (3), the outer sides of the bridge shaft (10) and the output shaft (9) are respectively sleeved with a fifth distance ring (20), the fifth distance ring (20) is located between the corresponding third bearing (33) and the first bearing (31), the outer side of the output shaft (9) is sleeved with a sixth distance ring (21), and the sixth distance ring (21) is located between the corresponding first bearing (31) and the second bearing (32).

6. The coaxial transmission for a pipe maker according to claim 5, wherein spring receiving plates (34) for holes are adhesively fixed to inner walls of two of the driven gears (4), one of the first gears (6), and one of the third gears (8), the spring receiving plates (34) for two holes located above are respectively provided on an inner left side of the corresponding driven gear (4) and an inner right side of the first gear (6), and the spring receiving plates (34) for two holes located below are respectively provided on an inner right side of the corresponding driven gear (4) and an inner left side of the third gear (8).

7. Coaxial gearbox for pipe makers according to claim 2, characterized in that said shifting block (25) is sheathed with a shaft spring stop (35) in the outer front part, the rear side of the shaft spring stop (35) being in contact with the front side of the crank (22).

8. The coaxial gearbox for the pipe making machine as claimed in claim 2, characterized in that a gear indicator (30) is fixedly mounted on the front side of the box body (1), the outer sides of the intermediate shaft (10) and the input gear shaft (5) are respectively provided with a plurality of first key slots, wherein the number of the first key slots on the outer side of the intermediate shaft (10) is two, the number of the first key slots on the outer side of the input gear shaft (5) is one, a first key block (37) is arranged in the first key slots, the intermediate shaft (10) is respectively connected with the driving gear (3) and the second gear (7) through the corresponding two first key blocks (37), the input gear shaft (5) is connected with the driving gear (3) through the corresponding first key block (37), the outer side of the shift shaft (11) is provided with a second key slot, a second key block (38) is arranged in the second key slot, and the shift shaft (11) is connected with the crank (22) through the corresponding second key block (38).

9. The coaxial gearbox for the pipe making machine according to claim 1, wherein two lifting eye screws (39) are installed at the top of the box body (1), oil seals (40) are sleeved on the outer sides of the input gear shaft (5) and the output shaft (9), the outer sides of the oil seals (40) are fixedly connected with the box body (1), and an oil pointer (43) and a screw plug (44) are arranged on the front side of the box body (1).

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