Double-end sealed rolling body circumferential wedge extrusion speed reducer

Abstract

The utility model discloses a kind of double-end sealing type rolling body circumferential wedge extrusion speed reducer, including speed reducer body and speed reducer cover and fixed bottom plate, the speed reducer body is arranged in the inside of the speed reducer cover, the speed reducer body is fixed in the top of the fixed bottom plate, the speed reducer cover is fixed in the top of the fixed bottom plate, the outer wall of the speed reducer cover is provided with protective layer, the protective layer is sequentially provided with waterproof corrosion -resistant layer, fireproof layer and hard steel plate layer from outside to inside, the utility model, high -efficient three -dimensional heat dissipation, effectively solve the heat dissipation problem under heavy load condition, avoid lubricating oil metamorphosis due to high temperature, reduce the wear rate of component, prolong service life, comprehensive protection design, adapt to harsh environment, amplitude improve the adaptability of speed reducer in dusty, humid, corrosive harsh environment, installation is stable and reliable, maintenance operation is convenient, reduce maintenance cost and downtime.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to a double-end sealed rolling element circumferential wedge extrusion speed reducer. Background Technology

[0002] As a core component of industrial transmission systems, the performance of the speed reducer directly affects the operational stability and service life of the entire equipment. Rolling element circumferential wedge extrusion speed reducers are widely used in heavy-duty applications due to their high transmission efficiency and strong load-bearing capacity.

[0003] Some existing double-end sealed rolling element circumferential wedge extrusion reducers have the following defects: Firstly, the heat dissipation performance is insufficient. Under heavy load conditions, the internal components of the reducer generate a large amount of heat through high-speed friction. Existing reducers mostly rely on the outer casing for natural heat dissipation, which has low heat dissipation efficiency. The accumulation of heat can easily lead to the deterioration of lubricating oil, increased wear of parts, and shorten the service life of the equipment.

[0004] Secondly, the protective performance is lacking. Industrial environments contain a lot of dust, water vapor, and corrosive media. The existing reducer covers are mostly single-layer metal structures, which are susceptible to corrosion and have poor dust and water protection. Impurities entering the interior can cause transmission failures and increase maintenance costs.

[0005] Third, it lacks installation stability and ease of maintenance; it is inconvenient to install the reducer cover and to maintain it.

[0006] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0007] In view of the problems in the related technologies, this utility model proposes a double-end sealed rolling element circumferential wedge extrusion reducer to overcome the above-mentioned technical problems existing in the existing related technologies.

[0008] Therefore, the specific technical solution adopted by this utility model is as follows: A double-ended sealed rolling element circumferential wedge extrusion reducer includes a reducer body, a reducer cover, and a fixed base plate. The reducer body is disposed inside the reducer cover and fixed above the fixed base plate. The reducer cover is fixed above the fixed base plate, and a protective layer is provided on the outer wall of the reducer cover.

[0009] As a further embodiment of this utility model, heat dissipation fins are provided on both sides of the reducer cover, the heat dissipation fins are integrally formed with the reducer cover, heat dissipation mesh is provided on both sides and one side of the reducer cover, and a cooling fan is provided on one side of the reducer cover. The cooling fan is fixed to the reducer cover by a bracket, and the air outlet direction of the cooling fan is towards the reducer body.

[0010] As a further embodiment of this utility model, a through groove is provided at the bottom of the reducer cover and on the other side of the reducer cover. The length of the through groove at the bottom is adapted to the reducer body. A detachable dustproof net is provided in the through groove on the side. The dustproof net is connected to the through groove by a buckle.

[0011] As a further embodiment of this utility model, a ventilation mesh is provided in the middle of the fixed base plate, the ventilation mesh is directly opposite the bottom of the reducer body, and "L"-shaped fixing plates are fixed around the bottom of the fixed base plate. The "L"-shaped fixing plates are welded to the fixed base plate, and fixing holes are provided on the "L"-shaped fixing plates. Fixing bolts are provided on the fixing holes, and anti-loosening washers are sleeved on the ends of the fixing bolts.

[0012] As a further embodiment of this utility model, mounting holes are provided at the four corners of the bottom of the reducer cover and at the four corners of the fixed base plate. Bolts are provided in the mounting holes. The bolts are internal hexagonal head bolts. Elastic washers are provided between the bolts and the mounting holes.

[0013] As a further embodiment of this utility model, the protective layer is provided with a waterproof and corrosion-resistant layer, a fireproof layer and a hard steel plate layer from the outside to the inside.

[0014] As a further embodiment of this utility model, the waterproof and corrosion-resistant layer is a polytetrafluoroethylene coating with a thickness of 0.2mm-0.5mm, the fireproof layer is an intumescent fireproof coating with a thickness of 0.3mm-0.8mm, and the hard steel plate layer is welded and fixed to the outer wall of the reducer housing with a thickness of 1mm-3mm.

[0015] The beneficial effects of this utility model are as follows: 1. High-efficiency three-dimensional heat dissipation, extending service life: This utility model adopts a three-dimensional heat dissipation system that combines "active heat dissipation + passive heat dissipation". The heat dissipation fins on both sides of the reducer cover increase the passive heat dissipation area. Together with the heat dissipation mesh on both sides and the side, a natural ventilation channel is formed. At the same time, the heat dissipation fan fixed on the side actively blows air onto the reducer body to accelerate heat transfer. The bottom ventilation mesh cooperates with the through groove at the bottom of the cover to form a vertical airflow circulation, which effectively solves the heat dissipation problem under heavy load conditions, avoids the deterioration of lubricating oil due to high temperature, and reduces the wear rate of parts.

[0016] 2. Comprehensive protective design, adaptable to harsh environments: The three-layer composite protective layer of the outer casing provides multiple layers of protection. The outer polytetrafluoroethylene coating has excellent waterproof and acid and alkali corrosion resistance, and can resist the erosion of water vapor and chemical media in industrial environments. The middle intumescent fireproof coating layer expands rapidly when exposed to fire to form a heat-insulating char layer, preventing the spread of fire. The inner hard steel plate layer enhances the structural rigidity and impact resistance of the outer casing, avoiding damage to internal components by external forces, and greatly improving the adaptability of the reducer in harsh environments with dust, humidity and strong corrosion.

[0017] 3. Stable and reliable installation, convenient maintenance and operation: The "L"-shaped fixing plate at the bottom of the fixed base plate is connected to the mounting surface by fixing bolts with anti-loosening washers, which effectively prevents loosening caused by vibration. The outer cover and the base plate are fixed by internal hexagonal head bolts and elastic washers, which improves the sealing and vibration resistance of the connection. The through groove at the bottom is adapted to the reducer body, which not only ensures ventilation but also facilitates maintenance of the bottom of the body, reducing maintenance costs and downtime. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a double-end sealed rolling element circumferential wedge extrusion reducer according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the outer casing of a double-end sealed rolling element circumferential wedge extrusion reducer according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the interior of the reducer housing of a double-end sealed rolling element circumferential wedge extrusion reducer according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the fixed base plate of a double-end sealed rolling element circumferential wedge extrusion reducer according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the protective layer of a double-end sealed rolling element circumferential wedge extrusion reducer according to an embodiment of the present utility model.

[0020] In the picture: 1. Gearbox body; 2. Gearbox cover; 3. Fixing base plate; 4. Protective layer; 5. Heat sink; 6. Heat dissipation mesh; 7. Heat dissipation fan; 9. Through slot; 10. Dustproof mesh; 12. Ventilation mesh; 13. "L" shaped fixing plate; 14. Fixing hole; 15. Fixing bolt; 17. Mounting hole; 18. Bolt; 19. Waterproof and corrosion resistant layer; 20. Fireproof layer; 21. Hard steel plate layer. Detailed Implementation

[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0022] According to an embodiment of the present invention, a double-ended sealed rolling element circumferential wedge extrusion reducer is provided.

[0023] Please refer to the instruction manual appendix. Figure 1-5 According to an embodiment of the present invention, a double-ended sealed rolling element circumferential wedge extrusion reducer includes a reducer body 1, a reducer outer cover 2, and a fixed base plate 3. The reducer body 1 adopts the existing rolling element circumferential wedge extrusion transmission structure to ensure transmission efficiency and load-bearing capacity.

[0024] The reducer body 1 is fixed to the center of the fixed base plate 3 with fixing bolts, ensuring that the bottom of the reducer body 1 is completely aligned with the ventilation mesh 12 in the middle of the fixed base plate 3. The reducer cover 2 is made of stainless steel and its internal space is adapted to the volume of the reducer body 1. The reducer cover 2 is placed on the outside of the reducer body 1, so that the mounting holes 17 at the four corners of the bottom of the reducer cover 2 are aligned with the mounting holes 17 at the four corners of the fixed base plate 3. Insert the hexagon socket head cap bolts 18, and put elastic washers between the bolts 18 and the mounting holes 17. Tighten the bolts 18 to complete the fixation of the reducer cover 2 and the fixed base plate 3. The elastic washers can effectively buffer vibration and prevent the bolts from loosening.

[0025] The two sides of the reducer housing 2 are integrally formed with heat sinks 5 by die casting process. The heat sinks 5 are arranged at equal intervals to increase the heat dissipation area. Rectangular heat dissipation meshes 6 are opened on both sides and the right side of the housing to ensure ventilation and prevent large particles of impurities from entering. The cooling fan 7 is fixed to the bracket with screws, and its air outlet direction is directly facing the middle of the reducer body 1 to ensure that the air force can directly act on the heat-generating core area.

[0026] A through groove 9 with a length matching that of the reducer body 1 is opened at the bottom of the reducer cover 2 to facilitate airflow at the bottom. A through groove 9 with the same size as the heat dissipation mesh 6 is opened on the left side of the reducer cover 2. A dustproof mesh 10 made of nylon material is embedded in the through groove 9. The edge of the dustproof mesh 10 is pre-set with a buckle that matches the buckle on the inner wall of the through groove 9. Press the dustproof mesh 10 so that the buckle is snapped into the buckle and fixed, which can effectively block dust from entering.

[0027] The fixed base plate 3 is made of Q235 steel plate. The ventilation mesh 12 in the middle is integrally stamped with the base plate. The "L" shaped fixing plate 13 is fixed around the bottom of the fixed base plate 3 by carbon dioxide gas shielded welding. The fixing bolt 15 is passed through the fixing hole 14 and connected to the installation foundation. The fixing bolt 15 is an M10 high-strength bolt. Its end is fitted with a nitrile rubber anti-loosening washer. After tightening the fixing bolt 15, the anti-loosening washer can generate a pre-tightening force to prevent loosening caused by vibration.

[0028] The protective layer 4 on the outer wall of the reducer housing 2 is made using a layered coating and welding process: First, the outer wall of the reducer housing 2 is derusted and degreased. A polytetrafluoroethylene coating is applied as a waterproof and corrosion-resistant layer 19 using a plasma spraying process. After the coating has cured, an intumescent fireproof coating is brushed onto its surface as a fireproof layer 20. Finally, the cold-rolled steel plate is cut into a shape that fits the outer wall of the housing and fixed to the outer wall of the housing by spot welding to form a rigid steel plate layer 21, ensuring a firm connection.

[0029] When the reducer is running, the cooling fan 7 is started. External cold air enters the outer casing through the dustproof net 10 on the left side and is blown towards the reducer body 1 by the cooling fan 7. After absorbing heat, it is discharged through the cooling nets 6 on the right side and both sides. At the same time, the bottom ventilation net 12 and the bottom through groove 9 form an airflow circulation, which accelerates the dissipation of heat at the bottom. The heat sink 5 transfers the heat absorbed by the outer casing to the air through heat conduction, thus achieving passive heat dissipation.

[0030] During routine maintenance, when a lot of dust accumulates on the surface of the dust filter 10, pinch the edge of the dust filter 10 and pull it outward to disengage the clip from the slot. The dust filter 10 can then be removed, cleaned, and reinstalled. Regularly check the operating status of the cooling fan 7 and the integrity of the protective layer 4. If the polytetrafluoroethylene coating is found to be damaged, recoat it in time to ensure the protective effect.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A double-ended sealed rolling element circumferential wedge extrusion reducer, comprising a reducer body (1), a reducer cover (2), and a fixed base plate (3), characterized in that: The reducer body (1) is located inside the reducer cover (2). The reducer body (1) is fixed above the fixed base plate (3). The reducer cover (2) is fixed above the fixed base plate (3). A protective layer (4) is provided on the outer wall of the reducer cover (2).

2. The double-end sealed rolling element circumferential wedge extrusion reducer according to claim 1, characterized in that: Heat sinks (5) are provided on both sides of the reducer cover (2). The heat sinks (5) are integrally formed with the reducer cover (2). Heat dissipation meshes (6) are provided on both sides and one side of the reducer cover (2). A cooling fan (7) is provided on one side of the reducer cover (2). The cooling fan (7) is fixed to the reducer cover (2) by a bracket. The air outlet direction of the cooling fan (7) is towards the reducer body (1).

3. The double-end sealed rolling element circumferential wedge-shaped extrusion reducer according to claim 1, characterized in that: The bottom of the reducer cover (2) and the other side of the reducer cover (2) are provided with through grooves (9). The length of the through groove (9) at the bottom is adapted to the reducer body (1). A detachable dustproof net (10) is provided in the through groove (9) on the side. The dustproof net (10) is connected to the through groove (9) by a buckle.

4. The double-end sealed rolling element circumferential wedge-shaped extrusion reducer according to claim 1, characterized in that: A ventilation mesh (12) is provided in the middle of the fixed base plate (3). The ventilation mesh (12) is directly opposite the bottom of the reducer body (1). An "L"-shaped fixing plate is fixed around the bottom of the fixed base plate (3). The "L"-shaped fixing plate (13) is welded to the fixed base plate (3). A fixing hole (14) is provided on the "L"-shaped fixing plate (13). A fixing bolt (15) is provided on the fixing hole (14). An anti-loosening washer is sleeved on the end of the fixing bolt (15).

5. A double-end sealed rolling element circumferential wedge-shaped extrusion reducer according to claim 4, characterized in that: Mounting holes (17) are provided at the four corners of the bottom of the reducer cover (2) and at the four corners of the fixed base plate (3). Bolts (18) are provided on the mounting holes (17). The bolts (18) are internal hexagonal head bolts. An elastic washer is provided between the bolts (18) and the mounting holes (17).

6. The double-end sealed rolling element circumferential wedge extrusion reducer according to claim 1, characterized in that: The protective layer (4) consists of a waterproof and corrosion-resistant layer (19), a fireproof layer (20), and a hard steel plate layer (21) arranged sequentially from the outside to the inside.

7. A double-end sealed rolling element circumferential wedge-shaped extrusion reducer according to claim 6, characterized in that: The waterproof and corrosion-resistant layer (19) is a polytetrafluoroethylene coating with a thickness of 0.2mm-0.5mm. The fireproof layer (20) is an intumescent fireproof coating with a thickness of 0.3mm-0.8mm. The hard steel plate layer (21) is welded and fixed to the outer wall of the reducer cover (2) with a thickness of 1mm-3mm.

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