Wet-type multi-disc electromagnetic clutch

Abstract

The utility model discloses a wet-type multi-disc electromagnetic clutch which comprises a clutch shell, a mounting base is arranged at the end of the clutch shell and movably clamped in an inner cavity of a base, a connecting base is arranged on the upper side of the base, a plurality of movable grooves are formed in the outer side of the base at equal intervals, and the movable grooves are connected with the connecting base in a clamped mode. A movable groove is formed in the mounting base, a movable block is movably clamped in the movable groove, one end of the movable block is correspondingly clamped in a locking groove in the outer side of the mounting base, a limiting mechanism is arranged on the movable block, a bevel groove is formed in the upper side of the movable block, and a plain end groove is formed in the tail end of the bevel groove. The clutch shell mounting base is scientific and reasonable in structural design, the movable groove, the movable block, the locking groove, the limiting groove, the clamping block, the spring, the bevel groove, the locking bolt and other structures are arranged to be matched with one another, the connecting stability is high, the mounting base can be quickly connected and disassembled, and therefore the purpose of quickly disassembling and assembling a clutch shell is achieved; and subsequent overhaul and maintenance processes are facilitated, and the using effect of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of clutch equipment technology, specifically a wet multi-plate electromagnetic clutch. Background Technology

[0002] A clutch is a device that separates and engages the driving and driven parts when they transmit torque and rotational motion on the same axis without stopping the machine. Installed in the transmission system of mechanical equipment, the clutch is engaged or disengaged through operation or automatic control, enabling the starting, stopping, reversing, and speed changing of mechanical components. However, existing dual-gear clutches are difficult to disassemble and install during maintenance due to their heavy weight and metal construction. Traditional wet multi-plate electromagnetic clutches have the following technical drawbacks:

[0003] Low installation efficiency: Bolt fixing requires specialized tools and takes over 20 minutes per installation, impacting production line maintenance efficiency; Difficult alignment: Manual alignment of the keyway between the clutch and base is required, easily leading to component damage due to operational errors; For example, the electromagnetic clutch disclosed in existing patent CN209875342U uses flange bolt connection, requiring at least four bolts for installation. Bolt preload deviation (typically ±20%) can easily cause clutch coaxiality deviation (>0.1mm), triggering transmission vibration. Disassembly requires completely loosening the bolt assembly, making the operation cumbersome. Therefore, we propose a wet multi-plate electromagnetic clutch. Utility Model Content

[0004] The purpose of this invention is to provide a wet multi-plate electromagnetic clutch to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wet multi-plate electromagnetic clutch, including a clutch housing, a mounting seat at the end of the clutch housing, the mounting seat being movably engaged in the inner cavity of a base, a connecting seat on the upper side of the base, and multiple movable grooves evenly spaced along the outer side of the base, a movable block being movably engaged in the movable groove, one end of the movable block being engaged in a locking groove on the outer side of the mounting seat, a limit mechanism being provided on the movable block, a slanted groove being provided on the upper side of the movable block, a flat groove being provided at the tail end of the slanted groove, and a locking bolt being provided above the slanted groove, the locking bolt being screwed into a threaded hole on the connecting seat.

[0006] In the above scheme, the base and the connecting seat are fixedly connected.

[0007] In the above scheme, both the base and the connecting seat are annular mechanisms, and their inner diameters are the same.

[0008] In the above scheme, the limiting mechanism includes a locking block that is fixedly connected to the moving block. The locking block is movably engaged in the limiting groove, and a spring is connected to the side of the locking block.

[0009] In the above scheme, the number and position of the locking bolts correspond one-to-one with the moving blocks.

[0010] In the above scheme, a protective bracket is provided on the outer side of the clutch housing.

[0011] In the above scheme, a connecting rod is provided on the side of the base.

[0012] Compared with existing technologies, the advantages of this utility model are as follows: This wet multi-plate electromagnetic clutch has a simple and reasonable structural design and strong practicality. Through the coordinated arrangement of components such as the movable groove, moving block, locking groove, limiting groove, locking block, spring, oblique groove, and locking bolt, it achieves strong connection stability and enables rapid connection and disassembly of the mounting base. This facilitates quick assembly and disassembly of the clutch housing, enabling subsequent maintenance and repair processes and improving the device's usability. During installation, the mounting base of the clutch housing is aligned with the base. Upon insertion, the moving block is pushed into the locking groove by the spring. Rotating the connecting base causes the locking bolt to slide along the oblique groove, further locking the moving block through the oblique thrust. Operation is convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the connection structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the base connection structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram: 1. Clutch housing; 11. Mounting seat; 12. Base; 13. Connecting seat; 14. Movable groove; 15. Moving block; 16. Locking groove; 17. Limiting groove; 18. Clamping block; 19. Spring; 2. Angled groove; 21. Locking bolt; 22. Protective bracket; 23. Connecting rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3This utility model provides a technical solution: a wet multi-plate electromagnetic clutch, including a clutch housing 1, a mounting seat 11 at the end of the clutch housing 1, the mounting seat 11 being movably engaged in the inner cavity of a base 12, a connecting seat 13 on the upper side of the base 12, and multiple movable grooves 14 evenly spaced along the outer side of the base 12, a movable block 15 being movably engaged in the movable groove 14, one end of the movable block 15 being engaged in a locking groove 16 on the outer side of the mounting seat 11, a limit mechanism being provided on the movable block 15, a slanted groove 2 being provided on the upper side of the movable block 15, a flat groove being provided at the tail end of the slanted groove 2, and a locking bolt 21 being provided above the slanted groove 2, the locking bolt 21 being screwed into a threaded hole on the connecting seat 13.

[0019] By engaging the movable block 15 with the locking groove 16, and combined with the guiding effect of the oblique groove 2 and the locking bolt 21, the clutch housing 1 can be quickly installed and removed within 30 seconds.

[0020] The base 12 and the connecting seat 13 adopt a circular integrated design, which reduces space occupation and is suitable for various installation scenarios.

[0021] The limiting mechanism 18 works in conjunction with the spring 19 to ensure that the moving block 15 automatically resets, avoiding the tedious operation of manual alignment and improving the convenience of maintenance.

[0022] By setting up a structure with movable groove 14, moving block 15, locking groove 16, limiting groove 17, locking block 18, spring 19, oblique groove 2 and locking bolt 21, the connection is highly stable and can quickly connect and disassemble the mounting base 11, thereby achieving the purpose of quick disassembly and assembly of the clutch housing 1, so as to carry out subsequent inspection and maintenance procedures and improve the use effect of the device.

[0023] Specifically, the parameters of each component are as follows: the moving block 15 is made of aluminum alloy 6061-T6 with anodized surface treatment.

[0024] Spring 19 is made of 304 stainless steel with a spring constant of 50 N / mm.

[0025] Locking groove 16: Depth: 5mm, Width: 8mm.

[0026] Length of oblique groove 2: 15mm, inclination angle: 30°.

[0027] The clutch housing 1 is made of explosion-proof aluminum alloy and has an anti-static coating on the surface.

[0028] The movable block 15 is pre-tightened by the spring 19 and forms a mechanical self-locking with the locking groove 16, with a load-bearing capacity of ≥500N.

[0029] Guiding and positioning system: The inclined angle of the oblique groove 2 is 30° and the pitch of the locking bolt 21 is 1.5mm, ensuring automatic alignment during installation.

[0030] Protective design: The protective bracket 22 is made of Q235B steel with a thickness of 3mm and can withstand a lateral impact force of 1000N.

[0031] In the above scheme, the base 12 and the connecting seat 13 are fixedly connected. M10×30mm high-strength bolts of grade 8.8 are used for fixing, with the bolts evenly distributed circumferentially at 120mm intervals. The contact surfaces of the base 12 and the connecting seat 13 are milled to a flatness ≤0.05mm, and are fitted with nitrile rubber O-rings with a Shore hardness of 70A to achieve a sealed connection and prevent hydraulic oil leakage.

[0032] In the above design, both the base 12 and the connecting seat 13 are annular mechanisms with the same inner diameter. They are manufactured using an integrated forging process, with QT450-10 ductile iron as the material and an inner diameter tolerance controlled at H7 grade. The annular design reduces the overall structural weight by 30%, and the φ150mm inner diameter matches the standard drive shaft, allowing for installation with ISO 9409-1 flanges.

[0033] In the above scheme, the limiting mechanism includes a locking block 18 fixedly connected to the moving block 15. The locking block 18 is movably engaged within the limiting groove 17, and a spring 19 is connected to the side of the locking block 18. The locking block 18 is made of 40Cr alloy steel with a hardening treatment of HRC45-50, and the clearance between it and the limiting groove 17 is 0.02-0.05mm. The spring 19 is made of 304 stainless steel, with a free length of 40mm, a pre-compression of 10mm, and provides an initial elastic force of 25N. When the moving block 15 moves, the locking block 18 slides along the guide slope of the limiting groove 17 to achieve displacement compensation of ±1.5mm, thereby ensuring the stability of the mechanism. During disassembly, the locking bolt 21 is rotated counterclockwise to disengage it from the inclined groove 2. The spring 19 releases its elastic force to push the locking block 18, causing the moving block 15 to reset and disengage from the locking groove 16. At this time, the clutch housing 1 can be easily removed. The 0.02-0.05mm clearance between the locking block 18 and the limiting groove 17 of the limiting mechanism ensures the guiding accuracy of the moving block 15 during reset. During installation, align the mounting base 11 of the clutch housing 1 with the base 12. Upon insertion, the moving block 15 is pushed into the locking groove 16 by the spring 19. Rotating the connecting seat 13 causes the locking bolt 21 to slide along the inclined groove 2, further locking the moving block 15 through the inclined surface thrust. During disassembly, rotating the locking bolt 21 counterclockwise releases the lock on the moving block 15. The spring 19 pushes the locking block 18, causing the moving block 15 to reset and disengage from the locking groove 16, allowing the clutch housing 1 to be removed.

[0034] In the above scheme, the number and position of the locking bolts 21 correspond one-to-one with the moving blocks 15. M8×1.25 fine-pitch bolts with a pitch accuracy of 6g are used. Each locking bolt 21 is equipped with a disc spring washer. The bolt head is designed as an internal hexagon countersunk head with a depth of 5mm to avoid external interference. Rotating the connecting seat 13, the M8 fine-pitch thread of the locking bolt 21 engages with the threaded hole of the connecting seat 13, and the bolt head slides along the 30° inclined surface of the beveled groove 2. The inclined surface thrust further presses the moving block 15 into the locking groove 16, forming a mechanical self-locking mechanism. Simultaneously, the 15mm length of the beveled groove 2 and the 1.5mm pitch of the locking bolt 21 match to ensure automatic alignment during installation.

[0035] In the above scheme, a protective bracket 22 is provided on the outer side of the clutch housing 1. The protective bracket 22 is made of Q235B hot-rolled steel plate, bent to a thickness of 5mm, and coated with an epoxy resin powder film with a thickness of 80-120μm. The bracket is fixed to the equipment frame by four M12 expansion bolts and can withstand a lateral impact force of 1500N. A 10mm gap is left between the bracket and the clutch housing 1, with a built-in high-temperature resistant silicone rubber buffer pad.

[0036] In the above scheme, a connecting rod 23 is provided on the side of the base 12. The connecting rod 23 is made of alloy steel with a quenched and tempered finish, has a diameter of φ25mm, and a length of 150mm. Joint bearings are installed at both ends of the connecting rod 23, allowing for a swing angle of ±15°. By connecting the connecting rod 23 to an external actuator such as a cylinder or hydraulic cylinder, remote control of the clutch can be achieved.

[0037] Working principle:

[0038] When this type of wet multi-plate electromagnetic clutch needs to be installed, the mounting seat 11 of the clutch housing 1 is aligned with the base 12 and inserted. At this time, under the preload of 25N from the spring 19, the moving block 15 slides along the guide slope of the limiting groove 17, pushing the moving block 15 radially out and into the locking groove 16 of the mounting seat 11, achieving initial positioning. Subsequently, the connecting seat 13 is rotated, and the M8 fine thread of the locking bolt 21 engages with the threaded hole of the connecting seat 13. The bolt head slides along the 30° slope of the inclined groove 2, and the inclined surface thrust further presses the moving block 15 into the locking groove 16, forming a mechanical self-locking mechanism. At the same time, the 15mm length of the inclined groove 2 and the 1.5mm pitch of the locking bolt 21 match to ensure automatic alignment during installation.

[0039] During disassembly, rotating the locking bolt 21 counterclockwise disengages it from the inclined slot 2. The spring 19 releases its elastic force, pushing the locking block 18 to reset the moving block 15, disengaging it from the locking slot 16. At this point, the clutch housing 1 can be easily removed. The 0.02-0.05mm clearance between the locking block 18 and the limiting slot 17 ensures the guiding accuracy of the moving block 15 during reset. The protective bracket 22, fixed with expansion bolts, can withstand a 1500N lateral impact, protecting the clutch housing 1. The connecting rod 23 connects to an external actuator such as a cylinder, achieving ±15° oscillation via a spherical bearing, controlling the clutch action response time to ≤30ms. The overall structure, through the combination of a ductile iron base and an aluminum alloy moving block, reduces weight while ensuring rigidity, meeting operational requirements.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wet multi-plate electromagnetic clutch, comprising a clutch housing (1), characterized in that: The clutch housing (1) is provided with a mounting seat (11) at its end. The mounting seat (11) is movably engaged in the inner cavity of the base (12). A connecting seat (13) is provided on the upper side of the base (12). Multiple movable slots (14) are provided at equal intervals along the outer side of the base (12). A movable block (15) is movably engaged in the movable slot (14). One end of the movable block (15) is engaged in the locking slot (16) on the outer side of the mounting seat (11). A limit mechanism is provided on the movable block (15). A slanted slot (2) is provided on the upper side of the movable block (15). A flat slot is provided at the tail end of the slanted slot (2). A locking bolt (21) is provided above the slanted slot (2). The locking bolt (21) is screwed into the threaded hole on the connecting seat (13).

2. The wet multi-plate electromagnetic clutch according to claim 1, characterized in that: The base (12) is fixedly connected to the connecting seat (13).

3. The wet multi-plate electromagnetic clutch according to claim 1, characterized in that: Both the base (12) and the connecting seat (13) are ring-shaped mechanisms, and their inner diameters are the same.

4. The wet multi-plate electromagnetic clutch according to claim 1, characterized in that: The limiting mechanism includes a locking block (18) fixedly connected to the moving block (15), the locking block (18) is movably locked in the limiting groove (17), and a spring (19) is connected to the side of the locking block (18).

5. The wet multi-plate electromagnetic clutch according to claim 1, characterized in that: The number and position of the locking bolts (21) correspond one-to-one with the moving blocks (15).

6. The wet multi-plate electromagnetic clutch according to claim 1, characterized in that: A protective bracket (22) is provided on the outside of the clutch housing (1).

7. The wet multi-plate electromagnetic clutch according to claim 1, characterized in that: A connecting rod (23) is provided on the side of the base (12).

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