Gearbox output shaft mounting structure for double-helix oil press

Abstract

The utility model provides a gear box output shaft installation structure for a double-helix oil press, which comprises a driving shaft, a middle transmission shaft and output shafts which are installed in a box cover and a box seat and are in meshing transmission through gears, the output shafts are a first output shaft and a second output shaft which are in parallel transmission, a double-output bearing seat is arranged between the box cover and the box seat, and the double-output bearing seat is arranged on the box cover. The first output shaft and the second output shaft are located in the double-output bearing seat to rotate, and semi-circular rings are fixedly arranged at the two ends of a middle bidirectional semi-circular ring in the double-output bearing seat and used for fixing the first output shaft and the second output shaft in the two ends of the middle bidirectional semi-circular ring to rotate. The problem of output shaft installation in the prior art is solved, the stability of a transmission system and the overall performance of equipment are remarkably improved, and meanwhile the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gearbox transmission, specifically to a gearbox output shaft mounting structure for a double-screw oil press. Background Technology

[0002] The twin-screw oil press, as a highly efficient and energy-saving oil extraction device, is widely used in the pressing process of vegetable oilseeds. Its core structure consists of two counter-rotating spiral shafts that squeeze the oil out of the feed through continuously increasing pressure within the press cage. Due to its high oil extraction efficiency, excellent oil yield, and low residual oil content in the dried cake, the twin-screw oil press has been widely used in recent years in the processing of various high-oil-content crops such as peanuts, walnuts, and tea seeds.

[0003] However, in practical applications, the gearbox design of the double-screw oil press suffers from the following technical bottlenecks:

[0004] The oil pressing process of a twin-screw oil press requires a close center distance between the screw shafts to achieve uniform compression and efficient pressing of the material within the pressing chamber. However, in traditional gearboxes, the arrangement of the two output shafts must meet the requirement of a close center distance, which limits the installation space of the output shafts and makes it difficult to guarantee assembly accuracy.

[0005] Because the center distance of the output shaft is relatively close, the support structure design of the output shaft in traditional gearboxes often cannot balance strength and rigidity. It is easy for vibration or uneven load to cause transmission instability, which affects the continuous operation efficiency of the oil press.

[0006] Traditional gearboxes often use a split bearing housing structure. The fit between the output shaft and the bearing housing needs to be adjusted multiple times to meet the coaxiality requirements. This not only increases the assembly difficulty, but also leads to lubricant leakage or impurity intrusion due to unreasonable sealing structure design, further shortening the equipment life.

[0007] In summary, the existing gearbox design of twin-screw oil presses has significant shortcomings in terms of output shaft arrangement, transmission stability, and ease of maintenance. There is an urgent need for a gearbox output shaft installation scheme that is compact, has high assembly precision, stable transmission, and is easy to maintain, in order to meet the core requirements of twin-screw oil presses for high efficiency, long service life, and low maintenance costs. Utility Model Content

[0008] The main purpose of this utility model is to provide a gearbox output shaft mounting structure for a double-screw oil press, which solves the significant deficiencies in the gearbox design of the double-screw oil press in terms of output shaft arrangement, transmission stability, and ease of maintenance.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: it includes a drive shaft, an intermediate transmission shaft, and an output shaft installed in the cover and the base and driven by gear meshing. The output shaft consists of a first output shaft and a second output shaft in parallel transmission. A double output bearing seat is provided between the cover and the base. The first output shaft and the second output shaft rotate within the double output bearing seat. Semicircular rings are fixed at both ends of the intermediate bidirectional semicircular ring in the double output bearing seat. The semicircular rings are used to fix the first output shaft and the second output shaft within the intermediate bidirectional semicircular ring for rotation.

[0010] Preferably, a support seat is fixed at the bottom of the housing, and a first bearing seat is fixed inside the support seat, with the end of the second output shaft abutting against the first bearing seat and rotating therein.

[0011] Preferably, one end of the first output shaft abuts against the double output bearing housing and rotates, while the other end abuts against the housing cover and housing housing through the second bearing housing and rotates.

[0012] Preferably, the first output shaft and the second output shaft are provided with meshing gears.

[0013] Preferably, the cover and the base are provided with corresponding arc grooves, and the dual output bearing housing is installed in the arc groove.

[0014] Preferably, the connecting half-faces of the semi-circular ring and the middle bidirectional semi-circular ring are positioned by a hidden pin, and the two ends of the semi-circular ring and the middle bidirectional semi-circular ring are locked and fixed by bolts and nuts.

[0015] Preferably, a bearing is fixedly installed inside the dual-output bearing housing, and a first end cover and a second end cover are fixedly installed at the ends of the dual-output bearing housing, with lip seals installed inside the first end cover and the second end cover.

[0016] The lip seals in the first and second end caps abut against the first and second output shafts.

[0017] This utility model provides a gearbox output shaft mounting structure for a double-screw oil press, with the following advantages:

[0018] 1. By setting up a dual-output bearing housing consisting of a central bidirectional semi-circular ring and two end semi-circular rings, and using concealed pin positioning and bolt locking, the coaxiality and assembly accuracy between the first and second output shafts are ensured. The mounting holes of the dual-output bearing housing are precision machined after assembly, further improving the rotational accuracy and operational stability of the output shafts.

[0019] 2. Multiple bearing seats are provided at the end of the output shaft, and the half-face structure of the cover and the housing enhances the support rigidity of the output shaft. At the same time, a support seat with stiffeners is provided at the bottom of the housing to provide additional support for the second output shaft, effectively improving the stability and fatigue resistance of the overall structure.

[0020] 3. The dual-output bearing housing adopts an openable structure design, which facilitates the installation, replacement and clearance adjustment of the bearings, reduces the difficulty and time cost of later maintenance, and improves the maintainability and ease of use of the equipment. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a front axle side view of the gearbox structure of this utility model;

[0023] Figure 2 This is a rear axle side view of the gearbox structure of this utility model;

[0024] Figure 3 This is a utility model Figure 2 Exploded view;

[0025] Figure 4 This is a top view of the gearbox structure of this utility model;

[0026] Figure 5 This is a utility model Figure 4 Sectional view of AA;

[0027] Figure 6 This is an isometric view of the internal mounting of the housing of this utility model;

[0028] In the figure: 1. Box cover; 2. Box base; 3. Drive shaft; 4. First output shaft; 5. Second output shaft; 6. First end cover; 7. Second end cover; 8. Double output bearing seat; 801. Semicircular ring 802; 9. Support seat; 10. First bearing seat; 11. Detailed Implementation

[0029] like Figures 1-6 As shown, a gearbox output shaft mounting structure for a double-screw oil press includes a drive shaft 3, an intermediate transmission shaft, and an output shaft that are installed in a cover 1 and a base 2 and driven by gear meshing. The output shaft consists of a first output shaft 4 and a second output shaft 5 that are driven in parallel. A double output bearing seat 8 is provided between the cover 1 and the base 2. The first output shaft 4 and the second output shaft 5 rotate within the double output bearing seat 8. Semicircular rings 802 are fixed at both ends of the intermediate bidirectional semicircular ring 801 in the double output bearing seat 8. The semicircular rings 802 are used to fix the first output shaft 4 and the second output shaft 5 within the intermediate bidirectional semicircular ring 801 for rotation.

[0030] The center distance between the two spiral shafts of the oil press is relatively close. The spiral shafts are connected and fixed to the first output shaft 4 and the second output shaft 5 respectively. The first output shaft 4 and the second output shaft 5 are driven by gear meshing. Multiple bearing seats are installed on the half surface connecting the cover 1 and the base 2, which are used for the installation of the drive shaft 3, the intermediate transmission shaft and the output shaft respectively. A double output bearing seat 8 is installed at the output shaft. The ends of the first output shaft 4 and the second output shaft 5 are installed side by side and vertically in the double output bearing seat 8. The other end of the first output shaft 4 abuts against the cover 1 and the base 2 through the second bearing seat 11 and rotates. The other end of the second output shaft 5 abuts against the base 2 through the first bearing seat 10 and rotates.

[0031] A support seat 9 is fixedly provided at the bottom of the housing 2. The support seat 9 is connected to the housing 2 by multiple ribs around its periphery. The first bearing seat 10 is fixed inside the support seat 9. The support seat 9 and the first bearing seat 10 increase the rotational stability of the second output shaft 5. The support seat 9 can store lubricating oil for gear meshing and lubrication of the first bearing seat 10.

[0032] The housing 2 and the housing cover 1 are provided with corresponding arc grooves at the locations where the dual output bearing seats 8 are installed. The two ends of the dual output bearing seats 8 are respectively locked in the arc grooves and fixed by bolts.

[0033] The semi-circular ring 802 and the intermediate bidirectional semi-circular ring 801 in the dual-output bearing housing 8 are positioned by concealed pins at their connecting half-faces. The two ends of the semi-circular ring 802 and the intermediate bidirectional semi-circular ring 801 are locked and fixed by bolts and nuts. The internal mounting holes of the dual-output bearing housing 8 are precision-machined after fixing to ensure the assembly accuracy of the semi-circular ring 802 and the intermediate bidirectional semi-circular ring 801. The openable design of the dual-output bearing housing 8 facilitates bearing installation and adjustment of bearing clearance.

[0034] A bearing is fixedly mounted inside a dual-output bearing housing 8. A first end cover 6 and a second end cover 7 are fixedly mounted at the ends of the dual-output bearing housing 8. A lip seal is provided inside the first end cover 6 and the second end cover 7. The lip seals in the first end cover 6 and the second end cover 7 abut against the first output shaft 4 and the second output shaft 5. The first output shaft 4 and the second output shaft 5 rotate within the dual-output bearing housing 8 through the bearings. The lip seals at their ends abut against the first output shaft 4 and the second output shaft 5 through the first end cover 6 and the second end cover 7, thereby achieving rotational sealing.

[0035] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A gearbox output shaft mounting structure for a double-screw oil press, comprising a drive shaft (3) installed in a cover (1) and a base (2) and driven by gear meshing, an intermediate transmission shaft, and an output shaft, characterized in that: The output shafts are a first output shaft (4) and a second output shaft (5) in parallel transmission. A double output bearing seat (8) is provided between the cover (1) and the base (2). The first output shaft (4) and the second output shaft (5) rotate within the double output bearing seat (8). The two ends of the middle bidirectional semicircular ring (801) in the double output bearing seat (8) are fixed with semicircular rings (802). The semicircular rings (802) are used to fix the first output shaft (4) and the second output shaft (5) to rotate within the two ends of the middle bidirectional semicircular ring (801).

2. The gearbox output shaft mounting structure for a double-screw oil press according to claim 1, characterized in that: The bottom of the housing (2) is fixedly provided with a support seat (9), and a first bearing seat (10) is fixedly provided inside the support seat (9). The end of the second output shaft (5) abuts against the first bearing seat (10) and rotates.

3. The gearbox output shaft mounting structure for a double-screw oil press according to claim 1, characterized in that: One end of the first output shaft (4) rotates against the double output bearing seat (8), and the other end rotates against the cover (1) and the seat (2) through the second bearing seat (11).

4. The gearbox output shaft mounting structure for a double-screw oil press according to claim 1, characterized in that: The first output shaft (4) and the second output shaft (5) are provided with meshing gears.

5. The gearbox output shaft mounting structure for a double-screw oil press according to claim 1, characterized in that: The cover (1) and the base (2) are provided with corresponding arc grooves, and the double output bearing seat (8) is installed in the arc groove.

6. The gearbox output shaft mounting structure for a double-screw oil press according to claim 1, characterized in that: The semicircular ring (802) and the middle bidirectional semicircular ring (801) are positioned by a hidden pin, and the two ends of the semicircular ring (802) and the middle bidirectional semicircular ring (801) are locked and fixed by bolts and nuts.

7. The gearbox output shaft mounting structure for a double-screw oil press according to claim 1, characterized in that: A bearing is fixedly installed inside the dual output bearing housing (8), and a first end cover (6) and a second end cover (7) are fixedly installed at the ends of the dual output bearing housing (8). A lip seal ring is provided inside the first end cover (6) and the second end cover (7). The lip seals in the first end cap (6) and the second end cap (7) abut against the first output shaft (4) and the second output shaft (5).

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