An assembled gear reducer

Abstract

The present application relates to the technical field of motor reducers, and in particular to an assembled gear reducer, which includes a plurality of housings and gear sets, wherein the gear sets include a pair of mutually meshing gears, at least one set of the gear sets is disposed in each housing, and the gear sets are connected to each other through a rotating shaft, and an axial hole carrier structure for carrying the rotating shaft to rotate is disposed on the side of the housing, and a displacement structure for moving the axial hole carrier structure is disposed on the side wall of the housing, and a fixing structure for fixing and connecting the two housings is disposed on one side of the two adjacent housings where the axial hole carrier structure is disposed. The present application has the effect of expanding the scope of application of the gear reducer of the gear reducer.

Description

Technical Field

[0001] The present application relates to the technical field of motor reducers, and in particular to an assembled gear reducer. Background Art

[0002] The gear reducer is an independent closed transmission device between the prime mover and the working machine. It controls the transmission ratio change through the meshing relationship between the gear sets to reduce the output speed of the prime mover shaft and increase its torque, meeting the requirements of a variety of low-speed and high-torque working conditions.

[0003] During the gear design process, the diameter parameter of the gear is determined by the material selection, module and transmission ratio required to be achieved. This leads to the fact that in the process of designing the transmission ratio of the gear assembly, in order to meet a transmission ratio requirement of the working condition, the diameter of the corresponding gear is also required to be a constant, resulting in a non-standard design.

[0004] Most of the existing gear reducer housings are manufactured by casting, so that the positions of the bearing seat and other parts of the housing are completely fixed. This design method can only meet the design requirements of one transmission ratio. When faced with the need to meet the design requirements of other transmission ratios, the gear design diameter changes due to the change in transmission ratio, and the mold can only be re-manufactured to cast a housing that matches its transmission ratio. This one-to-one non-standard design of the gear reducer housing leads to high design costs for the gear reducer and a narrow scope of application. Summary of the invention

[0005] In order to expand the application scope of the reduction box of the gear reducer, the present application provides an assembled gear reducer.

[0006] The present application provides an assembled gear reducer adopting the following technical solution:

[0007] An assembled gear reducer includes a plurality of housings and gear sets, wherein the gear sets include a pair of gears meshing with each other, at least one set of the gear sets is arranged in each housing, and the gear sets are connected to each other through a rotating shaft, an axial hole carrier structure for carrying the rotating shaft to rotate is arranged on the side of the housing, a displacement structure for moving the axial hole carrier structure is arranged on the side wall of the housing, and a fixing structure for fixing the two housings is arranged on one side of the two adjacent housings on which the axial hole carrier structure is arranged.

[0008] By adopting the above technical scheme, the reduction box of the assembled gear reducer is composed of several housings combined by a fixed structure, wherein each housing is provided with at least one set of gear sets, and the gear sets are connected to each other through a rotating shaft, and the rotating shaft of the gear set passes through the shaft hole carrier structure to connect with the gear sets of other housings to form an overall gear combination structure with a set required transmission ratio, thereby realizing the reduction function of the gear reducer. In addition, the present design also sets a displacement structure to control the displacement of the shaft hole carrier structure on the housing, and indirectly controls the change in the distance between the shaft holes of the multi-shaft hole carrier structure in a single housing, so as to adapt to gear sets with different diameters and different transmission ratios, and through the detachable housing, housings with different accommodating space sizes can be replaced for combined adaptation. Such a setting can standardize the production standards of the reduction box of the gear reducer, and by replacing the housing constituting the reduction box and adjusting the distance between the two shaft holes on the housing, it is possible to adapt to gear sets with different transmission ratios and different diameters, thereby reducing the production cost caused by the non-standard reduction box.

[0009] Optionally, the shaft hole carrier structure includes a receiving block arranged through the side wall of the box body, a through hole is opened in the receiving block, the receiving block is docked with the displacement structure, a bearing seat is fixedly provided in the hole of the receiving block, a bearing is fixedly provided in the bearing seat, a rotating shaft is rotatably connected in the bearing, and the side of the receiving block facing the outside is coplanar with the side wall of the box body.

[0010] By adopting the above technical solution, a bearing seat is arranged in the receiving block, and a bearing is arranged in the bearing seat. By setting the bearing seat as a receiving part, the installation of standard bearings can be achieved by controlling the non-standard setting habits of the bearing seat, thereby improving the overall versatility. The receiving block is used as a receiving carrier on the displacement structure to avoid damage to the bearing seat due to sliding, thereby increasing the service life of the bearing seat.

[0011] Optionally, the displacement structure includes a through hole opened in the side wall of the box body, a slideway is opened on the side wall of the through hole, the receiving block is slidably connected in the slideway, the slideways on opposite sides of two adjacent boxes are arranged in parallel, and the receiving blocks on two adjacent boxes are arranged oppositely, and the bearings arranged in the two are coaxially arranged.

[0012] By adopting the above technical solution, the receiving blocks can be slidably connected along the slideway direction, and the slideways between adjacent boxes are parallel, so that the receiving blocks on the two boxes can be set in a relatively tight manner during the sliding process.

[0013] Optionally, a plurality of threaded through holes are provided on both receiving blocks, the threaded through holes on the two receiving blocks are coaxially corresponding to each other, and the threaded through holes of the two receiving blocks are threadably connected by bolts.

[0014] By adopting the above technical solution, the two receiving blocks are fixedly connected by bolts, so that after the adjacent boxes are fixed, the receiving blocks can achieve synchronous sliding on the slideways of the two boxes.

[0015] Optionally, the displacement structure also includes a locking structure, which is arranged on the side wall of the box body on which the receiving block is provided, and the locking structure includes an expanded groove opened on the inner side of the side wall, and the receiving block is tightly against the bottom of the expanded groove. A fixing plate is also fixedly arranged on the side wall, and the fixing plate is detachably connected to the receiving block. A through hole is opened on the fixing plate, and the projection of the inner ring of the bearing in the receiving block on the fixing plate is included in the range of the through hole of the fixing plate.

[0016] By adopting the above technical solution, the expanded groove facilitates the installation of the receiving block in the slideway, and the fixed plate is provided to fix the receiving block with a determined position to the slideway. The rotating shaft passes through the bearings on the two receiving blocks and through the through hole on the fixed plate to connect the gear sets in the two boxes.

[0017] Optionally, a locking flange is fixedly provided on the fixing plate, and the locking flange is tightly against the side wall of the expansion groove and the receiving block.

[0018] By adopting the above technical solution, after the receiving block is positioned, the locking flange is inserted between the receiving block and the side wall of the expansion groove. By the tight abutment setting, the activity range of the receiving block is reduced, and the locking strength of the receiving block is further improved.

[0019] Optionally, a waist-shaped hole is opened on the fixing plate along the direction of the slideway, and a corresponding threaded hole is opened on the receiving block toward the inner side of the box body. A fixing bolt is penetrated through the fixing plate, and the fixing bolt is threadedly connected in the threaded hole.

[0020] By adopting the above technical solution, the fixing bolt passes through the waist-shaped hole opened on the fixing plate and is threadedly connected with the threaded hole on the receiving block. By rotating the fixing bolt, the tightness of the nut of the bolt and the fixing plate is controlled, and the fixed connection of the receiving block is indirectly achieved by friction.

[0021] Optionally, the fixing structure includes a dovetail groove opened on the side wall of the box body on one side of the shaft hole carrier structure, and the dovetail grooves of the two boxes are interlocked.

[0022] By adopting the above technical solution, the two boxes are initially positioned by means of the dovetail groove.

[0023] Optionally, the fixing structure further includes a protrusion and a groove respectively provided on two adjacent boxes, the protrusion is embedded in the groove, and a bolt passes through and threadedly connects the two.

[0024] By adopting the above technical solution, the protruding part and the groove part are arranged to overlap to achieve fixed connection of the two boxes.

[0025] Optionally, the reduction gearbox formed by the fixing structure on each of the housings has at most two groups of shaft holes connected to the outside.

[0026] By adopting the above technical solution, the reduction gearbox as a whole forms a relatively closed structure to reduce external interference.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By combining the gearbox of the gear reducer and providing an axial hole carrier structure that can change the axial center distance of the two rotating shafts in the box, the box can be adapted to gears of different specifications, and the combined assembly between gear sets under different transmission ratios within a certain range and under the condition of meeting the strength requirements can be achieved, thereby improving the versatility of the gearbox;

[0029] 2. By fixing the receiving block between the two boxes, when the bearings in the two receiving blocks carry the rotating shaft at the same time, the load of the rotating shaft is transferred to the two boxes to improve the stability of the rotating shaft rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0031] Figure 2 It is an overall cross-sectional view of an embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the fixed structure of an embodiment of the present application.

[0033] Figure 4 It is a schematic diagram of the installation of each gear set in the embodiment of the present application.

[0034] Figure 5 It is an exploded view of the locking structure of an embodiment of the present application.

[0035] Figure 6 It is a schematic diagram of the installation at the slideway of an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 1. Box body; 2. Gear set; 3. Shaft hole carrier structure; 31. Receiver block; 32. Bearing seat; 4. Displacement structure; 41. Slideway; 42. Locking structure; 421. Enlarged groove; 422. Fixing plate; 423. Locking flange; 424. Waist-shaped hole; 425. Fixing bolt; 5. Fixing structure; 51. Dovetail groove; 52. Protrusion; 53. Groove. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] The present application embodiment discloses an assembled gear reducer, referring to Figure 1 and Figure 2 A preassembled gear reducer comprises two horizontally arranged housings 1 and three gear sets 2, each gear set 2 comprises a pair of gears meshing with each other, one housing 1 is provided with one gear set 2, the other housing 1 is provided with two gear sets 2, the gear sets 2 are connected to each other through a rotating shaft, one side of the two housings 1 is arranged opposite to each other, and an axial hole carrier structure 3 for the rotating shaft to pass through and carry the rotating shaft to rotate is respectively arranged on the opposite sides, an axial hole for the rotating shaft to pass through is opened on the side wall of the housing 1 itself away from the side where the axial hole carrier structure 3 is arranged, and a bearing is arranged in the axial hole, and a displacement structure 4 for vertically moving the axial hole carrier structure 3 is arranged on the side walls of the two housings 1 provided with the axial hole carrier structure 3, and a fixing structure 5 for fixing and connecting the two housings 1 is arranged on one side where the axial hole carrier structure 3 is arranged on two adjacent housings 1.

[0040] Reference Figure 1 and Figure 3 The fixing structure 5 includes two groups of dovetail grooves 51 opened on the side walls of the shaft hole carrier structure 3 provided on the box body 1. The dovetail grooves 51 are arranged in a vertical direction, and the two groups of dovetail grooves 51 are arranged at a distance and distributed on both sides of the two shaft hole carrier structures 3. The dovetail grooves 51 of the two boxes 1 are interlocked with each other, so that the two side walls of the two boxes 1 are tightly against each other.

[0041] The fixing structure 5 also includes a protrusion 52 and a groove 53 respectively arranged on the upper and lower side surfaces of two adjacent box bodies 1. The protrusion 52 and the groove 53 are biased toward the side of the box body 1 where the axial hole carrier structure 3 is provided. The protrusion 52 of one box body 1 is embedded in the groove 53 of the other box body 1, and the two are penetrated and threadedly connected by a vertically arranged countersunk bolt.

[0042] Reference Figure 2 and Figure 6 The shaft hole carrier structure 3 includes an annular receiving block 31 that penetrates the side wall of the box body 1. The receiving block 31 is rectangular as a whole, and a circular through hole is reserved in the center part. The receiving blocks 31 of each shaft hole carrier structure 3 have the same specifications. The receiving block 31 is composed of two halves of blocks with exactly the same specifications and is connected to the displacement structure 4; a bearing seat 32 is fixedly arranged in the receiving block 31 by bolts, a bearing is fixedly arranged in the bearing seat 32, and a rotating shaft is rotatably connected in the bearing. The side of the receiving block 31 facing the outside is coplanar with the side wall of the box body 1, so that when the two boxes 1 are tightly fixed to each other, the receiving blocks 31 on the two can also be tightly pressed.

[0043] Reference Figure 4, Figure 5 and Figure 6 The displacement structure 4 includes a through hole in the shape of a long strip vertically opened on the side wall of the box body 1, and a slideway 41 in the same direction as the length direction of the through hole is opened on the downward side of the through hole. A slider is integrally formed on the receiving block 31, and the slider is slidably connected in the slideway 41. Two receiving blocks 31 are arranged in the slideway 41. The slideways 41 on the opposite sides of the two adjacent boxes 1 are arranged in parallel, and a pair of receiving blocks 31 on the two adjacent boxes 1 are arranged opposite to each other.

[0044] The four sides of the receiving blocks 31 arranged in pairs on the adjacent boxes 1 are all horizontally provided with threaded through holes, and the threaded through holes on the four sides of the paired receiving blocks 31 are coaxially arranged in the same direction, and the two receiving blocks 31 are threadedly connected in the threaded through holes of the two by a bolt, so that the two receiving blocks 31 are fixed.

[0045] The displacement structure 4 also includes a locking structure 42, which is arranged on the side wall of the box body 1 on which the receiving block 31 is provided. The locking structure 42 includes an expansion groove 421 vertically opened on the inner side of the side wall, and the receiving block 31 is tightly against the bottom of the expansion groove 421. The fixed plate 422 is also integrally formed with a long strip-shaped locking flange 423, which is plugged into and tightly against the side wall of the expansion groove 421 and the receiving block 31. A rectangular fixing plate 422 is also fixed on the side wall. The fixing plate 422 is connected to the receiving block 31 by bolts, and a long strip-shaped through hole is opened on the fixing plate 422. The projection of the inner ring of the bearing in the receiving block 31 on the fixing plate 422 is included in the through hole range of the fixing plate 422.

[0046] A waist-shaped hole 424 is opened on the fixing plate 422 along the direction of the slideway 41, and a corresponding threaded hole is opened on the receiving block 31 toward the inner side of the box body 1. A fixing bolt 425 is penetrated through the fixing plate 422, and the fixing bolt 425 is threadedly connected in the threaded hole, and the nut of the fixing bolt 425 is tightly against the fixing plate 422.

[0047] In summary, the above arrangement is that the motor shaft passes through the housing 1 in which the reduction box is provided with two sets of gear sets 2, and a driving gear is installed on the motor shaft in the housing 1. The second gear is rotatably connected and meshed with the side wall of the housing 1. The third gear is also rotatably connected on the opposite side of the housing 1. The second gear and the third gear are rotatably connected in the housing 1 through the same shaft. A shaft passes through the bearings of a pair of receiving blocks 31 on the two housings 1, and the two ends of the shaft are coaxially fixedly connected to the fourth gear and the fifth gear respectively. The two gears are respectively arranged in the two housings 1, and a shaft is connected in the bearing of another receiving block 31 in the housing 1 in which a set of gear sets 2 is arranged. The shaft is coaxially arranged with the shaft hole of the housing 1, and the shaft is coaxially fixedly connected with the sixth gear meshing with the fifth gear.

[0048] The implementation principle of an assembled gear reducer in an embodiment of the present application is as follows: first align the dovetail groove 51 between the two housings 1, and fit the protrusion 52 and the groove 53 together, and fix the two housings 1 together with bolts, and then install the bearing, bearing seat 32 and receiving block 31 at one end of the rotating shaft, and then place the receiving block 31 in the slideway 41, and install the receiving block 31 and other components at the other end of the rotating shaft, and then fix the receiving block 31 between the two housings 1 with bolts, and then adjust it to the required position, and then install the fixing plate 422, and completely fix the position of the receiving block 31, and combine the normal connection method of the bearing with the above-mentioned connection method, and repeat the operation to complete the installation of the reduction box.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembled gear reducer, characterized in that : comprising a plurality of housings (1) and gear sets (2), wherein the gear sets (2) comprise a pair of mutually meshing gears, each housing (1) is provided with at least one set of the gear sets (2), the gear sets (2) are connected to each other via a rotating shaft, a shaft hole carrier structure (3) for carrying the rotating shaft for rotation is provided on the side of the housing (1), a displacement structure (4) for moving the shaft hole carrier structure (3) is provided on the side wall of the housing (1), and a fixing structure (5) for fixing and connecting the two housings (1) is provided on one side of the two adjacent housings (1) on which the shaft hole carrier structure (3) is provided; The shaft hole carrier structure (3) comprises a receiving block (31) which is arranged to penetrate the side wall of the box body (1), a through hole is formed in the receiving block (31), the receiving block (31) is connected to the displacement structure (4), a bearing seat (32) is fixedly provided in the hole of the receiving block (31), a bearing is fixedly provided in the bearing seat (32), a rotating shaft is rotatably connected in the bearing, and a side of the receiving block (31) facing the outside is arranged coplanar with the side wall of the box body (1); The displacement structure (4) comprises a through hole formed in a side wall of the box body (1), a slideway (41) being formed in the side wall of the through hole, the receiving block (31) being slidably connected in the slideway (41), the slideways (41) on opposite sides of two adjacent boxes (1) being arranged in parallel, and the receiving blocks (31) on two adjacent boxes (1) being arranged opposite to each other, and the bearings arranged in the two boxes being arranged coaxially; The displacement structure (4) further comprises a locking structure (42), wherein the locking structure (42) is arranged on a side wall of the box body (1) on which the receiving block (31) is arranged, and the locking structure (42) comprises an expansion groove (421) formed on the inner side of the side wall, wherein the receiving block (31) is tightly against the bottom of the expansion groove (421), and a fixing plate (422) is fixedly arranged on the side wall, wherein the fixing plate (422) is detachably connected to the receiving block (31), and a through hole is formed on the fixing plate (422), and a projection of an inner ring of a bearing in the receiving block (31) on the fixing plate (422) is contained within the through hole of the fixing plate (422); A locking flange (423) is fixedly provided on the fixing plate (422), and the locking flange (423) is tightly pressed against the side wall of the expansion groove (421) and the receiving block (31); The fixing plate (422) is provided with a waist-shaped hole (424) along the direction of the slideway (41), the receiving block (31) is provided with a corresponding threaded hole toward the inner side of the box body (1), and a fixing bolt (425) is provided through the fixing plate (422), and the fixing bolt (425) is threadedly connected in the threaded hole.

2. The assembled gear reducer according to claim 1, characterized in that A plurality of threaded through holes are provided on both receiving blocks (31), the threaded through holes on the two receiving blocks (31) are coaxially corresponding to each other, and the threaded through holes of the two receiving blocks (31) are threadedly connected by bolts.

3. The assembled gear reducer according to claim 1, characterized in that The fixing structure (5) comprises a dovetail groove (51) formed on a side wall of the box body (1) on which the shaft hole carrier structure (3) is provided, and the dovetail grooves (51) of the two boxes (1) are interlocked.

4. The assembled gear reducer according to claim 3, characterized in that The fixing structure (5) further comprises a protruding portion (52) and a groove portion (53) respectively arranged on two adjacent boxes (1), the protruding portion (52) being embedded in the groove portion (53), and a bolt passing through and threadedly connecting the two.

5. The assembled gear reducer according to claim 1, characterized in that The reduction gearbox formed by the fixing structure (5) on each of the housings (1) has at most two groups of shaft holes in contact with the outside world.

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