Planetary double-shaft speed reducer for double-helix oil press

Abstract

The utility model provides a planet double-shaft speed reducer for a double-helix oil press. The planet double-shaft speed reducer comprises a flywheel, a planet gear speed reducer, a connecting cylinder and a transmission case. The driving motor is connected with the flywheel through a belt, power is stably input into the planetary gear speed reducer, large-speed-ratio speed reduction is achieved, and torque is amplified. And the output end of the planetary gear reducer is rigidly connected with the transmission case through the connecting cylinder, so that the structural stability and the assembly precision are enhanced. A first output shaft and a second output shaft are arranged in the transmission box and rotate synchronously through gear meshing. The double-output bearing seat is of a split half structure and is composed of a two-way semicircular ring and a semicircular ring, and high-precision assembly and stable supporting are guaranteed. The speed reducing mechanism overcomes the defects of a traditional speed reducing mechanism in the aspects of transmission efficiency, synchronism, bearing capacity and maintenance convenience, has the advantages of being compact in structure, high in bearing capacity, stable in operation, convenient to maintain, long in service life and the like, and is particularly suitable for efficient and energy-saving production requirements of the modern grain and oil processing industry.

Description

Technical Field

[0001] This utility model relates to the field of gearbox transmission, specifically to a planetary dual-shaft reduction device 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 has the following technical problems:

[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. Utility Model Content

[0006] The main objective of this invention is to provide a planetary dual-shaft reduction device for a twin-screw oil press, thereby solving the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: it includes a planetary gear reducer, a transmission box is provided on one side of the planetary gear reducer, a flywheel is fixedly provided on the input shaft at one end of the planetary gear reducer, and the transmission shaft at the other end is connected to the first output shaft in the transmission box.

[0008] The transmission box is equipped with a first output shaft and a second output shaft that are driven by gear meshing. A double output bearing seat is fixed at the end of the transmission box. The ends of the first output shaft and the second output shaft rotate against the double output bearing seat through bearings. The other end of the first output shaft is connected to the transmission shaft and rotates through the first bearing seat. The other end of the second output shaft rotates against the transmission box through the second bearing seat.

[0009] Preferably, a connecting cylinder is provided between the transmission box and the planetary gear reducer. One end of the connecting cylinder is fixed on the transmission box, and the other end is fixedly connected to the planetary gear reducer by flange bolts.

[0010] Preferably, a support base is fixed at the bottom of the transmission box, and the second bearing seat is fixed inside the support base;

[0011] The gear on the second output shaft is located inside the support, which stores lubricating oil for gear meshing lubrication.

[0012] Preferably, the gearbox housing and cover are provided with corresponding arc grooves, and the dual output bearing housing is installed in the arc grooves.

[0013] Preferably, the two ends of the bidirectional semicircular ring in the dual output bearing housing are fixed with semicircular rings, which are used to fix the first output shaft and the second output shaft to rotate at both ends of the bidirectional semicircular ring.

[0014] Bearings are provided between the first and second output shafts and the dual output bearing housing.

[0015] Preferably, the connecting half-faces of the semi-circular ring and the bidirectional semi-circular ring are positioned by a hidden pin, and the two ends of the semi-circular ring and the bidirectional semi-circular ring are locked and fixed by bolts and nuts.

[0016] Preferably, the dual output bearing housing is fixed with multiple end caps at its end, and each end cap has a lip seal ring inside, with the lip seal ring in the end cap abutting against the first output shaft and the second output shaft.

[0017] This utility model provides a planetary dual-shaft reduction device for a double-screw oil press, with the following advantages:

[0018] 1. The planetary gear reducer is used as the main reduction mechanism, which can achieve a large speed ratio reduction and amplify the output torque, meet the high load requirements of the twin-screw oil press during the pressing process, and improve the operating efficiency of the equipment.

[0019] 2. A first output shaft and a second output shaft are set inside the transmission box, and the two shafts are driven by gear meshing to keep them running stably and synchronously, effectively avoiding uneven material force caused by inconsistent speeds and improving the quality of oil output.

[0020] 3. The dual output bearing housing adopts a split half structure, consisting of a bidirectional semi-circular ring and a semi-circular ring. It is assembled by using concealed pin positioning and bolt locking, which not only facilitates on-site disassembly and maintenance, but also ensures assembly accuracy and prevents bearing overload. 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 view of the overall structure of this utility model;

[0023] Figure 2 This is a side view of the transmission box of this utility model;

[0024] Figure 3 This is a utility model Figure 2 A front sectional view;

[0025] Figure 4 This is an exploded view of the dual-output bearing housing of this utility model;

[0026] Figure 5 This is an internal view of the transmission box base of this utility model;

[0027] In the diagram: flywheel 1; planetary gear reducer 2; input shaft 201; transmission shaft 202; transmission box 3; first output shaft 301; second output shaft 302; double output bearing housing 303; semi-circular ring 3031; bidirectional semi-circular ring 3032; end cover 3033; first bearing housing 304; support seat 305; second bearing housing 306; connecting cylinder 4. Detailed Implementation

[0028] like Figures 1-5 As shown, a planetary dual-shaft reduction device for a double-screw oil press includes a planetary gear reducer 2, a transmission box 3 on one side of the planetary gear reducer 2, a flywheel 1 fixedly mounted on the input shaft 201 at one end of the planetary gear reducer 2, and a transmission shaft 202 at the other end connected to the first output shaft 301 in the transmission box 3.

[0029] The transmission box 3 is provided with a first output shaft 301 and a second output shaft 302 that are driven by gear meshing. A double output bearing seat 303 is fixed at the end of the transmission box 3. The ends of the first output shaft 301 and the second output shaft 302 rotate against the double output bearing seat 303 through bearings. The other end of the first output shaft 301 is connected to the transmission shaft 202 through the first bearing seat 304 and rotates. The other end of the second output shaft 302 rotates against the transmission box 3 through the second bearing seat 306.

[0030] The flywheel 1 stores kinetic energy, stabilizes the rotational speed, reduces motor load fluctuations, and ensures the stability of the oil pressing process. It is fixedly connected to the input shaft 201 of the planetary gear reducer 2.

[0031] The planetary gear reducer 2 serves as the main reduction device, reducing the high-speed rotation of the motor output and amplifying the torque to meet the high torque requirements of oil pressing. Its input end receives power from the motor via the input shaft 201. Its output end transmits the reduced power to the first output shaft 301 of the transmission box 3 via the transmission shaft 202.

[0032] The transmission box 3 further transmits and distributes power to the two output shafts, achieving synchronous operation of the double helical shafts. The first output shaft 301 is connected to the transmission shaft 202 of the planetary gear reducer, serving as the main power output shaft. The second output shaft 302 meshes with the first output shaft through gears, achieving synchronous rotation and ensuring that the two output shafts rotate in opposite directions.

[0033] The dual output bearing housing 303 supports the ends of the first output shaft 301 and the second output shaft 302, ensuring their stability and alignment during transmission. The dual bearing support structure enhances load-bearing capacity and operational smoothness.

[0034] Operation: The motor drives the flywheel to rotate via a belt. The flywheel is connected to the input shaft 201 of the planetary gear reducer, initiating power input. The reducer converts the high-speed, low-torque motor power into a low-speed, high-torque output. Power is transmitted from the reducer's output shaft to the first output shaft of the transmission box. Through gear transmission, the second output shaft receives power output synchronized with the first output shaft. The first and second output shafts respectively drive the two spiral shafts of the twin-screw oil press, completing the material pressing process.

[0035] The synchronous operation of the two output shafts is achieved through gear meshing, ensuring uniform pressure distribution during oil pressing. Multiple bearing support structures enhance the rigidity and stability of the overall system. A planetary gear reducer and transmission box combine to achieve high-ratio speed reduction, meeting the high torque requirements of the oil press. The rational layout of components minimizes space occupation, facilitating equipment installation and maintenance.

[0036] Preferably, a connecting cylinder 4 is provided between the transmission box 3 and the planetary gear reducer 2. One end of the connecting cylinder 4 is fixedly mounted on the transmission box 3, and the other end is fixedly connected to the planetary gear reducer 2 by flange bolts.

[0037] Connecting cylinder 4 serves as an intermediate support structure, effectively enhancing the rigidity and torsional resistance of the entire reduction gear, preventing misalignment or loosening due to vibration during operation. The flange bolt connection ensures coaxiality and alignment between the planetary gear reducer 2 and the transmission box 3, contributing to smooth power transmission. The flange connection design allows for easy disassembly, replacement, or maintenance of the reducer, improving equipment maintainability. Under high-speed or heavy-load conditions, connecting cylinder 4 can help share some of the torque load transmitted from the reducer to the transmission box, extending the life of bearings and shafts.

[0038] Preferably, a support base 305 is fixedly provided at the bottom of the transmission box 3, and the second bearing seat 306 is fixed inside the support base 305;

[0039] The gear on the second output shaft 302 is located inside the support 305, which stores lubricating oil for gear meshing lubrication.

[0040] Support 305 supports the second bearing housing 306, ensuring stable rotation of the second output shaft 302. This enhances the overall rigidity of the transmission box structure and prevents deformation or eccentricity caused by gravity or vibration.

[0041] The support base 305 can store a suitable amount of lubricating oil to ensure continuous lubrication of the gear meshing area. This effectively reduces gear wear, improves transmission efficiency, and extends the service life of the equipment.

[0042] Preferably, the gearbox 3 has corresponding arc grooves on the gearbox base and gearbox cover, and the dual output bearing seat 303 is installed in the arc groove.

[0043] The bidirectional semicircular ring 3032 in the dual output bearing housing 303 is fixed with semicircular rings 3031 at both ends. The semicircular rings 3031 are used to fix the first output shaft 301 and the second output shaft 302 at both ends of the bidirectional semicircular ring 3032 for rotation.

[0044] A bearing is provided between the first output shaft 301, the second output shaft 302, and the dual output bearing housing 303.

[0045] The semicircular ring 3031 and the bidirectional semicircular ring 3032 are positioned by a hidden pin, and the two ends of the semicircular ring 3031 and the bidirectional semicircular ring 3032 are locked and fixed by bolts and nuts.

[0046] The half-type structure allows the bearing housing to be opened without disassembling the output shaft, facilitating bearing replacement or shaft clearance adjustment. This reduces equipment downtime and improves maintenance efficiency.

[0047] A concealed pin positioning hole is provided between the semi-circular ring and the double-sided semi-circular ring to ensure coaxiality and alignment during assembly. This prevents bearing misalignment, which can lead to uneven load, wear, or even burnout. Multiple sets of bolts and nuts are used for tightening to enhance the overall rigidity of the structure and prevent loosening during high-speed operation.

[0048] The arc-shaped grooves on the housing and cover match the outer contour of the dual output bearing housing, forming a good fit and support. This helps to distribute the load and prevent localized stress concentration.

[0049] Preferably, a plurality of end caps 3033 are fixedly provided at the end of the dual output bearing housing 303, and a lip seal ring is provided inside the end cap 3033. The lip seal ring in the end cap 3033 abuts against the first output shaft 301 and the second output shaft 302.

[0050] When the output shaft rotates, the lip seal remains firmly against the shaft surface due to its elastic force, thus achieving the following functions: preventing lubricating oil from the transmission housing from leaking out through the gap between the bearing housing and the output shaft; effectively isolating external contaminants such as dust, moisture, and particulate matter from entering the bearing cavity; and maintaining the lubrication of the bearing and gear pair, extending their service life.

[0051] 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 planetary dual-shaft reduction gear for a double-screw oil press, characterized in that: The system includes a planetary gear reducer (2), a transmission box (3) is provided on one side of the planetary gear reducer (2), a flywheel (1) is fixed on the input shaft (201) at one end of the planetary gear reducer (2), and the transmission shaft (202) at the other end is connected to the first output shaft (301) in the transmission box (3). The transmission box (3) is provided with a first output shaft (301) and a second output shaft (302) that are driven by gear meshing. A double output bearing seat (303) is fixed at the end of the transmission box (3). The ends of the first output shaft (301) and the second output shaft (302) rotate against the double output bearing seat (303) through bearings. The other end of the first output shaft (301) is connected to the transmission shaft (202) through the first bearing seat (304) and rotates. The other end of the second output shaft (302) rotates against the transmission box (3) through the second bearing seat (306).

2. The planetary dual-shaft reduction gear for a double-screw oil press according to claim 1, characterized in that: A connecting cylinder (4) is provided between the transmission box (3) and the planetary gear reducer (2). One end of the connecting cylinder (4) is fixed on the transmission box (3), and the other end is fixedly connected to the planetary gear reducer (2) by flange bolts.

3. The planetary dual-shaft reduction gear for a double-screw oil press according to claim 1, characterized in that: A support base (305) is fixedly provided at the bottom of the transmission box (3), and the second bearing seat (306) is fixed inside the support base (305); The gear on the second output shaft (302) is located inside the support (305), which stores lubricating oil for gear meshing lubrication.

4. The planetary dual-shaft reduction gear for a double-screw oil press according to claim 1, characterized in that: The gearbox (3) has corresponding arc grooves on the gearbox base and gearbox cover, and the double output bearing seat (303) is installed in the arc groove.

5. The planetary dual-shaft reduction gear for a double-screw oil press according to claim 1, characterized in that: The bidirectional semicircular ring (3032) in the dual output bearing housing (303) is fixed with semicircular rings (3031) at both ends. The semicircular rings (3031) are used to fix the first output shaft (301) and the second output shaft (302) to rotate at both ends of the bidirectional semicircular ring (3032). A bearing is provided between the first output shaft (301) and the second output shaft (302) and the dual output bearing housing (303).

6. The planetary dual-shaft reduction gear for a double-screw oil press according to claim 5, characterized in that: The connecting half-faces of the semi-circular ring (3031) and the bidirectional semi-circular ring (3032) are positioned by a hidden pin, and the two ends of the semi-circular ring (3031) and the bidirectional semi-circular ring (3032) are locked and fixed by bolts and nuts.

7. The planetary dual-shaft reduction gear for a double-screw oil press according to claim 1, characterized in that: Multiple end caps (3033) are fixed at the end of the dual output bearing housing (303). A lip seal is provided inside the end cap (3033), and the lip seal in the end cap (3033) abuts against the first output shaft (301) and the second output shaft (302).

Images