CN219102000U - Low-speed high-torque double-screw transmission case - Google Patents

Abstract

The utility model discloses a low-speed high-torque double-screw transmission box, which comprises a shafting part and a box body part, wherein the shafting part comprises an upper transition shafting, an input B shafting, an output A shafting and an output B shafting are arranged below the upper transition shafting in parallel, an input A shafting is arranged below the input B shafting, a lower transition shafting is arranged below the output A shafting, and the box body part comprises a lower box body and an upper box body which are matched with each other; compared with the traditional parallel three-shaft structure, the novel parallel three-shaft structure has the advantages that one input shaft system is added for sharing torque transmission in the gear box, the bearing capacity of the transmission box is improved, the gear which is meshed with the original input shaft system gear at one stage and used for reducing is added in the newly added input shaft system, the transmission ratio distribution is more reasonable, and lower output speed can be obtained.

Description

Low-speed high-torque double-screw transmission case

Technical Field

The utility model relates to a transmission case, in particular to a low-speed high-torque double-screw transmission case.

Background

The transmission case is a core part of the parallel double-screw extruder. Twin screw extruders require that torque power be equally distributed to both screws in a confined space compared to other types. Different torque distribution techniques determine the bearing capacity of the gearbox and even directly affect the service life and performance of the complete machine.

The traditional parallel three-shaft torque distribution technology is a mature double-screw extruder transmission technology, and the gear box of the foreign double-screw extruder adopts the structure in the early stage. Because of the limited center-to-center distance, the torque transmitted by the gears on the output shaft is a bottleneck in the load-carrying capacity.

In order to improve the torque, a bilaterally symmetrical driving structure is developed later. The independent transition shafting is changed into an upper transition shafting and a lower transition shafting, and gears on the output shaft are driven from the upper direction and the lower direction. The bearing capacity of the gear on the output shaft is only 50% of that of the traditional parallel three-shaft type. Meanwhile, as the two transition shafts are symmetrically distributed on the output shaft, the radial force of the output shaft is completely counteracted, an ideal couple drive is formed, and the service life of the output shaft is greatly prolonged.

The parallel three-screw extruder needs a low-speed high-torque transmission box due to different working conditions, the traditional double-screw extruder transmission box is one-stage speed reduction, market requirements cannot be met, and if the one-stage transmission ratio is directly increased, the aspects of the overall dimension, quality and the like of the transmission box can be directly influenced.

Disclosure of Invention

The utility model provides a low-speed high-torque double-screw transmission case which is used for overcoming the defect that the transmission case of a double-screw extruder in the prior art cannot meet market demands when the low-speed high-torque double-screw extruder is required.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model discloses a low-speed high-torque double-screw transmission case, which comprises a shafting part and a case body part, wherein the shafting part is provided with a gear box; the shafting part comprises an upper transition shafting, an input B shafting, an output A shafting and an output B shafting are arranged below the upper transition shafting in parallel, an input A shafting is arranged below the input B shafting, and a lower transition shafting is arranged below the output A shafting; the box body part comprises a lower box body and an upper box body which are matched with each other.

Further, input A shafting includes gear shaft A, be equipped with gear portion A on the gear shaft A, gear portion A both sides are equipped with bearing A and bearing B respectively, bearing B's rear is equipped with the terminal surface gland, gear shaft A is kept away from bearing A's one side has the flat key, and it links to each other with the shaft coupling and is used for transmitting moment of torsion, and input A shafting installs in the inside of lower box.

Further, the input B shafting comprises a gear shaft B, a gear part B is arranged on the gear shaft B, a gear A is arranged at the rear of the gear part B, a bearing C and a bearing D are respectively arranged on two sides of the gear A, and the gear A is meshed with the gear part A of the gear shaft A and used for transmitting torque.

Further, the output A shafting is including being integral set up's integral key shaft and gear shaft C, bearing E is installed to the front end of integral key shaft, and thrust bearing A and bearing F are installed in proper order to the rear end, be equipped with gear portion C on the gear shaft C, gear portion C's rear is equipped with gear B, gear B's rear is equipped with bearing G, thrust bearing B and end cover in proper order, gear B meshes with gear portion B on the gear shaft B for the transmission moment of torsion, and the integral key shaft is the slender axles, and its both ends processing has external spline A and external spline B, and external spline A is output spline for output gear box moment of torsion.

Further, the upper transition shafting comprises an upper transition shaft, a gear C and a gear D are respectively arranged on two sides of the upper transition shaft, a bearing H and a bearing I are respectively arranged at two ends of the gear C, a bearing J and a bearing K are respectively arranged at two ends of the gear D, and a bearing distance sleeve A is arranged between the bearing I and the bearing J.

Further, the lower transition shafting comprises a lower transition shaft, a gear E and a gear F are respectively arranged on two sides of the lower transition shaft, a bearing L and a bearing M are respectively arranged at two ends of the gear E, a bearing N and a bearing P are respectively arranged at two ends of the gear F, a bearing distance sleeve B is arranged between the bearing N and the bearing P, and the gear D and the gear F are meshed with a gear part C on a gear shaft C for transmitting torque.

Further, the output shaft B comprises an output shaft B, a spline is arranged at the front end of the output shaft B, a bearing Q and a bearing R are arranged behind the spline, a gear is arranged at the middle end of the output shaft B, the gear, a gear C and a gear E participate in meshing transmission torque at the same time, and a bearing S and a serial thrust bearing are respectively arranged behind the output shaft B.

Further, the lower box body comprises a lower bottom plate, and a lower bearing seat C, a lower bearing seat B and a lower bearing seat A are sequentially arranged above the lower bottom plate; the upper box comprises an upper top plate, and an upper bearing seat C, an upper bearing seat B and an upper bearing seat A are sequentially arranged below the upper top plate.

The beneficial effects achieved by the utility model are as follows: compared with the traditional parallel three-shaft structure, the novel parallel three-shaft structure has the advantages that one input shaft system is added for sharing torque transmission in the gear box, the bearing capacity of the transmission box is improved, the gear which is meshed with the original input shaft system gear at one stage and used for reducing is added in the newly added input shaft system, the transmission ratio distribution is more reasonable, and lower output speed can be obtained.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is an exploded schematic view of the present utility model;

FIG. 2 is a schematic view of a partial structure of the present utility model;

FIG. 3 is a schematic diagram of the input A-axis system of the present utility model;

FIG. 4 is a schematic diagram of the input B-axis system of the present utility model;

FIG. 5 is a schematic diagram of the structure of the output A-axis of the present utility model;

FIG. 6 is a schematic diagram of the upper transition shafting of the present utility model;

FIG. 7 is a schematic view of the lower transition shafting of the present utility model;

FIG. 8 is a schematic diagram of the structure of the output B-axis system of the present utility model.

In the figure: 01A, inputting an A shaft system; 01A1, a bearing A;01A2, gear shaft A;01A3, bearing B;01A4, end face gland; 01A5, a flat key; 01B, inputting a B shaft system; 01B1, bearing C;01B2, gear shaft B;01B3, gear A;01B4, bearing D; 02. outputting an A shaft system; 021. a bearing E; 022. a spline shaft; 023. a thrust bearing A; 024. a bearing F; 025. a gear shaft C; 026. a gear B; 027. a bearing G; 028. a thrust bearing B; 029. an end cap; 03. a transitional shaft system is arranged; 031. a bearing H;032C1, gear C; 033. a bearing I; 034. a bearing J; 035. an upper transition shaft; 036B1, gear D; 037. a bearing K; 038. a bearing distance sleeve A; 04. a lower transition shafting; 041. a bearing L;042C1, gear E; 043. a bearing M; 044. a bearing N; 045. a lower transition shaft; 046B1, gear F; 047. a bearing P; 048. a bearing distance sleeve B; 05. outputting a B shafting; 051. a bearing Q; 052. a bearing R; b053 and an output shaft; 054. a bearing S; 055. a tandem thrust bearing; 06. a lower box body; 061. a lower base plate; 062. a lower bearing seat A; 063. a lower bearing seat B; 064. a lower bearing seat C; 07. an upper case; 071. an upper top plate; 072. an upper bearing seat A; 073. an upper bearing seat B; 074. and an upper bearing seat C.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Example 1

As shown in fig. 1-8, a low-speed high-torque twin-screw transmission case comprises a shafting part and a case body part; the shafting part comprises an upper transition shafting 03, an input B shafting 01B, an output A shafting 02 and an output B shafting 05 are arranged below the upper transition shafting 03 in parallel, an input A shafting 01A is arranged below the input B shafting 01B, and a lower transition shafting 04 is arranged below the output A shafting;

the input A shafting 01A comprises a gear shaft A01A2, a gear part A is arranged on the gear shaft A01A2, a bearing A01A1 and a bearing B01A3 are respectively arranged on two sides of the gear part A, an end face gland 01A4 is arranged behind the bearing B01A3, a flat key 01A5 is arranged on one side, far away from the bearing A01A1, of the gear shaft A01A2 and is connected with a coupler for transmitting torque, and the input A shafting 01A is installed inside a lower box 06.

The input B shafting 01B comprises a gear shaft B01B2, a gear part B is arranged on the gear shaft B01B2, a gear A01B3 is arranged at the rear of the gear part B, a bearing C01B1 and a bearing D01B4 are respectively arranged on two sides of the gear A01B3, and the gear A01B3 is meshed with a gear part A of the gear shaft A01A2 and used for transmitting torque.

The output A shafting 02 is including being integral set's integral key shaft 022 and gear shaft C025, bearing E021 is installed to the front end of integral key shaft 022, and thrust bearing A023 and bearing F024 are installed in proper order to the rear end, be equipped with gear portion C on the gear shaft C025, gear portion C's rear is equipped with gear B026, gear B026's rear is equipped with bearing G027, thrust bearing B028 and end cover 029 in proper order, gear B026 meshes with gear portion B on the gear shaft B01B2 for the transmission moment of torsion, integral key shaft 022 is the slender axles, and its both ends processing has external spline A and external spline B. The external spline A is an output spline and is used for outputting torque of the gearbox.

Gear B026 meshes with gear D036B1 and gear F046B1 simultaneously to participate in transmitting torque; one end of the gear shaft C025 is provided with an internal spline which is connected with an external spline B of the spline shaft 022; the other end is provided with a positioning hole and a flat key for positioning.

Gear B026 is connected to gear shaft C025 via positioning hole and flat key, and is meshed with gear a01B 3. Bearing F024 and bearing G027 are all installed and play the supporting role on the transmission shaft, are located the both sides of gear B026 respectively, thrust bearing B028 installs the afterbody at gear shaft C025, passes through the screw connection on the box after adjusting axial clearance by end cover 029.

The upper transition shafting 03 comprises an upper transition shaft 035, a gear C032C1 and a gear D036B1 are respectively arranged on two sides of the upper transition shaft 035, a bearing H031 and a bearing I033 are respectively arranged at two ends of the gear C032C1, a bearing J034 and a bearing K037 are respectively arranged at two ends of the gear D036B1, and a bearing distance sleeve A038 is arranged between the bearing I033 and the bearing J034;

the lower transition shafting 04 comprises a lower transition shaft 045, gears E042C1 and F046B1 are respectively arranged on two sides of the lower transition shaft 045, a bearing L041 and a bearing M043 are respectively arranged at two ends of the gear E042C1, a bearing N044 and a bearing P047 are respectively arranged at two ends of the gear F046B1, a bearing distance sleeve B048 is arranged between the bearing N044 and the bearing P047, and the gear D036B1 and the gear F046B1 are meshed with a gear part C on a gear shaft C for transmitting torque.

The output B shafting 05 comprises an output shaft B053, a spline is arranged at the front end of the output shaft B053, a bearing Q051 and a bearing R052 are arranged behind the spline, a gear is arranged at the middle end of the spline, the gear C032C1 and the gear E042C1 participate in meshing transmission torque at the same time, and a bearing S054 and a tandem thrust bearing 055 are respectively arranged behind the gear.

The box body part comprises a lower box body 06 and an upper box body 07 which are matched with each other, wherein the lower box body 06 comprises a lower bottom plate 061, and a lower bearing seat C064, a lower bearing seat B063 and a lower bearing seat A062 are sequentially arranged above the lower bottom plate 061; the upper box body 07 comprises an upper top plate 071, and an upper bearing seat C074, an upper bearing seat B073 and an upper bearing seat A072 are sequentially arranged below the upper top plate 071;

an input A shaft system hole is formed in the lower box body 06, an input B shaft system hole is formed in the joint surface of the upper box body 07 and the lower box body 06, and an input A shaft system 01A is parallel to an input B shaft system 01B.

The joint surface of the upper case 07 and the lower case 06 is a horizontal joint surface. The upper case 07 and the lower case 06 are formed with an output shaft a shaft fastening hole and an output shaft B shaft fastening hole at the joint surfaces. The output shaft A-axis 02 is located in the horizontal plane parallel to the output shaft B-axis 05. An upper transition shaft system hole is formed in the upper portion of the joint surface of the upper box body 07 after being fixedly installed with the upper bearing seat A072, the upper bearing seat B073 and the upper bearing seat C074, and a lower transition shaft system hole is formed in the lower portion of the joint surface of the lower box body 06 after being fixedly installed with the lower bearing seat A062, the lower bearing seat B063 and the lower bearing seat C064. The upper transition shaft system 03 and the lower transition shaft system 04 are symmetrically distributed about the joint surface and are parallel to the output shaft A shaft system 02.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The low-speed high-torque double-screw transmission case is characterized by comprising a shafting part and a case body part;

the shafting part comprises an upper transition shafting, an input B shafting, an output A shafting and an output B shafting are arranged below the upper transition shafting in parallel, an input A shafting is arranged below the input B shafting, and a lower transition shafting is arranged below the output A shafting;

the box body part comprises a lower box body and an upper box body which are matched with each other;

the input A shafting comprises a gear shaft A, a gear part A is arranged on the gear shaft A, a bearing A and a bearing B are respectively arranged on two sides of the gear part A, an end face gland is arranged at the rear of the bearing B, a flat key is arranged on one side, away from the bearing A, of the gear shaft A, and is connected with a coupler for transmitting torque, and the input A shafting is arranged in a lower box body;

the input B shafting comprises a gear shaft B, a gear part B is arranged on the gear shaft B, a gear A is arranged at the rear of the gear part B, a bearing C and a bearing D are respectively arranged on two sides of the gear A, and the gear A is meshed with the gear part A of the gear shaft A and used for transmitting torque.

2. The low-speed high-torque double-screw transmission case according to claim 1, wherein the output a shafting comprises a spline shaft and a gear shaft C which are integrally arranged, a bearing E is arranged at the front end of the spline shaft, a thrust bearing a and a bearing F are sequentially arranged at the rear end of the spline shaft, a gear part C is arranged on the gear shaft C, a gear B is arranged behind the gear part C, a bearing G, a thrust bearing B and an end cover are sequentially arranged behind the gear B, and the gear B is meshed with the gear part B on the gear shaft B for transmitting torque;

the spline shaft is an slender shaft, and an external spline A and an external spline B are machined at two ends of the slender shaft, wherein the external spline A is an output spline and used for outputting torque.

3. The low-speed high-torque double-screw transmission case according to claim 1, wherein the upper transition shafting comprises an upper transition shaft, a gear C and a gear D are respectively arranged on two sides of the upper transition shaft, a bearing H and a bearing I are respectively arranged at two ends of the gear C, a bearing J and a bearing K are respectively arranged at two ends of the gear D, and a bearing distance sleeve A is arranged between the bearing I and the bearing J.

4. The low-speed high-torque double-screw transmission case according to claim 1, wherein the lower transition shafting comprises a lower transition shaft, a gear E and a gear F are respectively arranged on two sides of the lower transition shaft, a bearing L and a bearing M are respectively arranged at two ends of the gear E, a bearing N and a bearing P are respectively arranged at two ends of the gear F, a bearing distance sleeve B is arranged between the bearing N and the bearing P, and the gear D and the gear F are meshed with a gear part C on a gear shaft C for transmitting torque.

5. The low-speed high-torque twin-screw transmission case according to claim 1, wherein the output B shafting comprises an output shaft B, a spline is arranged at the front end of the output shaft B, a bearing Q and a bearing R are arranged behind the spline, a gear is arranged at the middle end of the spline, the gear C and the gear E participate in meshing transmission of torque, and a bearing S and a tandem thrust bearing are respectively arranged behind the spline.

6. The low-speed high-torque double-screw transmission case according to claim 1, wherein the lower case body comprises a lower bottom plate, and a lower bearing seat C, a lower bearing seat B and a lower bearing seat A are sequentially arranged above the lower bottom plate;

the upper box comprises an upper top plate, and an upper bearing seat C, an upper bearing seat B and an upper bearing seat A are sequentially arranged below the upper top plate.

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