Speed reducer for constructional engineering

Abstract

The utility model discloses a speed reducer for constructional engineering, which comprises a planetary gear speed reducer, the output end of the planetary gear speed reducer is connected with a coupler, and the lower side of the coupler is connected with a polishing disc. An adjusting device for adjusting the height of the planetary gear speed reducer is arranged in the support, the adjusting device comprises a threaded shaft rotationally arranged in the support, a plurality of guide rods are further arranged in the support, and the planetary gear speed reducer further comprises a matching plate. After the rotating disc and the threaded shaft are rotated, under the action of threaded fit connection of the internal threaded block and the threaded shaft, the vertical position of the sliding block and the vertical position of the planetary gear speed reducer can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers for construction engineering, in particular to a speed reducer for construction engineering. Background Art

[0002] The reducers used in construction projects are generally used for rotating working parts, such as mixers, graders, etc., for machines used to level the ground. The special reducer for construction projects is directly connected to the grinding disc, and the motor in the external space is connected to the special reducer for construction projects for power connection to achieve the rotation and grinding of the grinding disc. The disadvantage of existing construction project reducers is that the height of the reducer cannot be easily adjusted when it is installed on the machine, and the personnel need to loosen the fasteners before adjusting the height of the reducer. People have conducted a lot of research on this. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a speed reducer for construction engineering, which can solve the above-mentioned problems in the prior art.

[0004] The utility model is realized through the following technical scheme: a reducer for construction engineering of the utility model comprises a planetary gear reducer, the output end of the planetary gear reducer is connected to a coupling, and a grinding disc is connected to the lower side of the coupling, and is characterized in that a bracket is arranged on one side of the planetary gear reducer, and an adjustment device for adjusting the height of the planetary gear reducer is arranged in the bracket, and the adjustment device comprises a rotatable threaded shaft arranged in the bracket, and a plurality of guide rods are also arranged in the bracket, and also comprises a matching plate, and the matching plate is connected and fixed to the planetary gear reducer, and a sliding block is arranged on one side of the matching plate, and the sliding block is slidably matched with the guide rod, and an internal thread block is also arranged on one side of the matching plate, and the internal thread block is threadedly matched with the threaded shaft, and a sleeve assembly is arranged between the sliding block and the bottom of the bracket.

[0005] According to a further technical solution, a rotating disk is provided at the top of the threaded shaft, and a rectangular hole is provided in the rotating disk.

[0006] According to a further technical solution, the sleeve assembly includes a split sleeve, and the sleeve is placed between the bottom of the sliding block and the bottom of the bracket.

[0007] A further technical solution is that the planetary gear reducer includes a shell, which is fixedly connected to the mating plate, an input shaft is arranged in the shell, an output shaft is also arranged in the shell, the output shaft is dynamically connected to the coupling, the output shaft and the input shaft are rotationally matched with the shell, and a transmission assembly is arranged between the output shaft and the input shaft.

[0008] A further technical solution is that the transmission assembly includes an upper bracket and a lower bracket arranged in the shell, three meshing gears are hingedly arranged between the upper bracket and the lower bracket, the lower bracket is fixedly connected to the output shaft, a through hole is arranged in the upper bracket, the input shaft passes through the through hole, an intermediate gear is arranged at the bottom of the input shaft, the intermediate gear is meshed with the meshing gear, and a gear ring is arranged in the shell, the gear ring is meshed with the meshing gear.

[0009] According to a further technical solution, the diameter of the through hole is larger than the outer diameter profile of the intermediate gear.

[0010] According to a further technical solution, end covers are respectively provided on the upper and lower sides of the shell, and the end covers are connected and fixed to the shell.

[0011] According to a further technical solution, a fixed disk is provided in the housing, the input shaft is rotatably connected to the fixed disk, and the output shaft is rotatably connected to the end cover.

[0012] According to a further technical solution, a connecting block is disposed on the outer surface of the input shaft, and the connecting block abuts against one side of the inner ring of the bearing inside the fixed disk.

[0013] The beneficial effects of the utility model are:

[0014] 1. By setting the sleeve to be a split and detachable type, the sleeve can be configured with various heights. After the height of the sliding block and the reducer is adjusted, the sleeve is set between the bottom of the bracket and the bottom of the sliding block to support the sliding block and the reducer.

[0015] Second, by arranging a connecting block on the outer surface of the input shaft, arranging a fixing plate in the housing, and arranging the output shaft and the end cover to be rotatably matched and connected, the positions of the input shaft and the output shaft are limited, so that the structure of the input shaft, the intermediate gear, the upper bracket, the through hole, the meshing gear, the lower bracket and the output shaft can be stably arranged in the housing, thereby realizing an efficient transmission function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of a speed reducer for construction engineering of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram at A in the middle;

[0019] Figure 3 for Figure 1Schematic diagram of the rear side of the medium reducer;

[0020] Figure 4 for Figure 1 Schematic diagram of the internal structure of the medium reducer;

[0021] Figure 5 for Figure 4 Schematic diagram of the middle reducer from above;

[0022] In the figure, sliding block 11, guide rod 12, bracket 13, threaded shaft 14, rotating disk 15, housing 16, grinding disk 17, matching plate 19, sleeve 21, internal thread block 22, input shaft 31, upper bracket 32, end cover 33, fixed disk 34, gear ring 35, meshing gear 37, lower bracket 38, output shaft 39, through hole 41, intermediate gear 42, coupling 44. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 5 As shown, the utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1 The up-down, left-right, front-back directions of the projection relationship itself are consistent. The utility model is a reducer for construction engineering, including a planetary gear reducer, the output end of the planetary gear reducer is connected to a coupling 44, the lower side of the coupling 44 is connected to a grinding disc 17, and a bracket 13 is provided on one side of the planetary gear reducer, and an adjustment device for adjusting the height of the planetary gear reducer is provided in the bracket 13.

[0024] Advantageously, the adjustment device includes a threaded shaft 14 rotatably arranged in the bracket 13, a plurality of guide rods 12 are also arranged in the bracket 13, and also includes a mating plate 19, a sliding block 11 is arranged on one side of the mating plate 19, the sliding block 11 is slidably connected with the guide rod 12, an internal thread block 22 is also arranged on one side of the mating plate 19, the internal thread block 22 is threadedly connected with the threaded shaft 14, and a sleeve assembly is arranged between the sliding block 11 and the bottom of the bracket 13.

[0025] Advantageously, a rotating disk 15 is disposed on the top of the threaded shaft 14 , and a rectangular hole is disposed in the rotating disk 15 .

[0026] Advantageously, the sleeve assembly includes a split sleeve 21, wherein a plurality of mounting holes are provided in the sleeve 21, bolts and nuts are provided in the mounting holes to connect and fix the split sleeve 21, and a semicircular opening hole is provided in the sleeve 21 extending upward and downward, and the hole abuts against the outer surface of the guide rod 12, and the sleeve 21 is placed between the bottom of the sliding block 11 and the bottom of the bracket 13.

[0027] Advantageously, the planetary gear reducer includes a housing 16, and the housing 16 is detachably connected and fixed to the mating plate 19. The detachable connection and fixing method includes connecting and fixing with fasteners, such as the use of bolts and nuts. An input shaft 31 is arranged in the housing 16, and an output shaft 39 is also arranged in the housing 16. The output shaft 39 is dynamically connected to the coupling 44. The output shaft 39 and the input shaft 31 are rotationally connected to the housing 16, and a transmission assembly is arranged between the output shaft 39 and the input shaft 31.

[0028] Advantageously, the transmission assembly includes an upper bracket 32 ​​and a lower bracket 38 arranged in the housing 16, three meshing gears 37 are hingedly arranged between the upper bracket 32 ​​and the lower bracket 38, the lower bracket 38 is fixedly connected with the output shaft 39, a through hole 41 is arranged in the upper bracket 32, the input shaft 31 passes through the through hole 41, an intermediate gear 42 is arranged at the bottom of the input shaft 31, the intermediate gear 42 is meshed with the meshing gear 37, a gear ring 35 is arranged in the housing 16, the gear ring 35 is meshed with the meshing gear 37, the diameter of the through hole 41 is larger than the outer diameter profile of the intermediate gear 42, so that the intermediate gear 42 can pass through the through hole 41 and mesh with the meshing gear 37.

[0029] Advantageously, the housing 16 is provided with end covers 33 on the upper and lower sides respectively, and the end covers 33 are detachably connected to the housing 16 , and the detachable connection and fixing method includes connection and fixing with fasteners, such as: matching connection of bolts and threaded holes.

[0030] Advantageously, a fixed disk 34 is disposed in the housing 16 , the input shaft 31 is rotationally connected to the fixed disk 34 , and the output shaft 39 is rotationally connected to the end cover 33 .

[0031] Advantageously, a connection block 43 is disposed on the outer surface of the input shaft 31 , and the connection block 43 abuts against one side of the inner ring of the bearing inside the fixed disk 34 .

[0032] By setting a bracket 13 on one side of the planetary gear reducer, after the rotating disk 15 and the threaded shaft 14 are rotated, the sliding block 11 and the planetary gear reducer can be adjusted in up and down position under the action of the threaded connection between the internal thread block 22 and the threaded shaft 14.

[0033] Before adjusting the position of the sliding block 11 and the planetary gear reducer, the separate sleeves 21 are disassembled from each other and then detached from the outer surface of the guide rod 12 so that the sleeve 21 and the sliding block 11 are no longer abutted against each other, so that the sliding block 11 can be lifted up and down.

[0034] When the reducer is in use, a motor is installed on one side of the end cover 33 at the top, and the output shaft of the motor is connected to the input shaft 31 for power connection. After the input shaft 31 rotates, the intermediate gear 42 is driven to rotate. Under the action of the engagement between the intermediate gear 42 and the meshing gear 37, and the engagement between the meshing gear 37 and the gear ring 35, the upper bracket 32 ​​and the lower bracket 38 can be driven to rotate, so that the lower bracket 38 drives the output shaft 39, the coupling 44 and the grinding disc 17 to rotate.

[0035] When the reducer is installed, the housing 16 is detachably connected to the matching plate 19, so that the planetary gear reducer and the matching plate 19 can be quickly disassembled and assembled.

[0036] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A speed reducer for construction engineering, comprising a planetary gear speed reducer, wherein the output end of the planetary gear speed reducer is connected to a coupling (44), and the lower side of the coupling (44) is connected to a grinding disc (17), characterized in that: A bracket (13) is provided on one side of the planetary gear reducer. An adjustment device for adjusting the height of the planetary gear reducer is provided in the bracket (13). The adjustment device comprises a threaded shaft (14) rotatably provided in the bracket (13). A plurality of guide rods (12) are also provided in the bracket (13). The bracket (13) also comprises a matching plate (19). The matching plate (19) is connected and fixed to the planetary gear reducer. A sliding block (11) is provided on one side of the matching plate (19). The sliding block (11) is connected to the guide rod (12) in a sliding matching manner. An internal thread block (22) is provided on one side of the matching plate (19). The internal thread block (22) is connected to the threaded shaft (14) in a threaded matching manner. A sleeve assembly is provided between the sliding block (11) and the bottom of the bracket (13).

2. A speed reducer for construction engineering according to claim 1, characterized in that: A rotating disk (15) is arranged at the top of the threaded shaft (14), and a rectangular hole is arranged in the rotating disk (15).

3. A speed reducer for construction engineering according to claim 1, characterized in that: The sleeve assembly comprises a split sleeve (21), and the sleeve (21) is placed between the bottom of the sliding block (11) and the bottom of the bracket (13).

4. A speed reducer for construction engineering according to claim 1, characterized in that: The planetary gear reducer comprises a housing (16), wherein the housing (16) is connected and fixed to the matching plate (19), an input shaft (31) is arranged in the housing (16), an output shaft (39) is also arranged in the housing (16), the output shaft (39) is connected to the coupling (44) in a dynamic manner, the output shaft (39) and the input shaft (31) are connected to the housing (16) in a rotationally matching manner, and a transmission assembly is arranged between the output shaft (39) and the input shaft (31).

5. A speed reducer for construction engineering according to claim 4, characterized in that: The transmission assembly comprises an upper bracket (32) and a lower bracket (38) which are arranged in the housing (16); three meshing gears (37) are hingedly arranged between the upper bracket (32) and the lower bracket (38); the lower bracket (38) is fixedly matched with the output shaft (39); a through hole (41) is arranged in the upper bracket (32); the input shaft (31) passes through the through hole (41); an intermediate gear (42) is arranged at the bottom of the input shaft (31); the intermediate gear (42) is meshed with the meshing gear (37); a gear ring (35) is arranged in the housing (16); the gear ring (35) is meshed with the meshing gear (37).

6. A speed reducer for construction engineering according to claim 4, characterized in that: The upper and lower sides of the shell (16) are respectively provided with end covers (33), and the end covers (33) are connected and fixed to the shell (16).

7. A speed reducer for construction engineering according to claim 6, characterized in that: A fixed disk (34) is disposed in the housing (16), the input shaft (31) is rotatably connected to the fixed disk (34), and the output shaft (39) is rotatably connected to the end cover (33).

8. A speed reducer for construction engineering according to claim 7, characterized in that: A connecting block (43) is provided on the outer surface of the input shaft (31), and the connecting block (43) abuts against one side of the inner ring of the bearing inside the fixed disk (34).

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