Overload protection coupling capable of quickly replacing friction plate

Abstract

The overload protection coupler comprises a hub, a first friction plate, a positioning ring and a locker, a pressure plate is sleeved on the hub, an adjusting nut is installed on the hub, the first friction plate is sleeved on the hub, a second friction plate is arranged between the first friction plate and the pressure plate, and the second friction plate is sleeved on the pressure plate. The first friction plate and the second friction plate are arranged in a semicircular mode, the positioning rings are connected with the first friction plate and the second friction plate, and the locker sleeves the positioning rings so that the first friction plate and the second friction plate can be installed on the hub. The two inner hexagonal screws are unscrewed, the two semicircular bushing rings are separated, at the moment, the semicircular bushing rings do not tightly hold the positioning ring, and after the first friction plate and the second friction plate lose the holding force of the semicircular bushing rings, the first friction plate and the second friction plate which are spliced into a circle are separated in a semicircular mode and fall off from the hub along the axial space, and in the narrow space, the friction plate is separated from the hub. And the step of replacing the first friction plate and the second friction plate is simpler.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coupling technical field, concretely is a kind of overload protection coupling of quick replacement of friction piece. BACKGROUND

[0002] The main function of overload protection coupling is to provide overload protection in mechanical transmission. When the transmitted torque exceeds the preset value, the coupling will slip, thereby preventing the key components in the transmission system from being damaged due to overload.

[0003] In related technology, a quick replacement of friction piece overload protection coupling (publication number CN216642864U) is found through retrieval. By loosening the second fixing bolt on the baffle, the baffle and the coupling sleeve can be moved to the right, so that the right friction plate can be removed. Then, the second outer sleeve is moved to the right, and another friction plate can be removed, achieving the function of easily replacing the friction plate and solving the maintenance problems of large overload protection equipment such as inconvenient disassembly and difficult friction plate replacement.

[0004] However, when removing the friction plate, enough axial space is needed to move the baffle and the coupling sleeve. When the coupling is applied to some narrow spaces, it is not convenient to move the baffle, coupling sleeve and friction plate due to limited operation space. Other components shielding the coupling need to be removed, resulting in a tedious process of replacing the friction plate. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a quick replacement of friction piece overload protection coupling to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a quick replacement of friction piece overload protection coupling, comprising a hub, a pressure plate is sleeved on the hub, and an adjusting nut is installed on the hub;

[0007] A first friction plate is sleeved on the hub. A second friction plate is provided between the first friction plate and the pressure plate. The first friction plate and the second friction plate are both semi-circular in shape. The first friction plate and the second friction plate can be quickly disassembled through radial space, making it convenient to remove the first friction plate and the second friction plate in a narrow space.

[0008] A positioning ring is provided and connected to the first friction plate and the second friction plate.

[0009] A locking device is sleeved around the positioning ring to install the first friction plate and the second friction plate on the hub. The locking device limits the positioning ring in a hoop manner. The locking device is also disassembled through radial space, making it convenient to replace the first friction plate and the second friction plate.

[0010] Further, the hub is sleeved with a disc spring, the adjusting nut is screwed to extrude the disc spring, the disc spring pushes the pressure plate to compress the second friction plate, the overload torque of the shaft coupling can be adjusted, and the slip problem can be avoided after the second friction plate is worn.

[0011] Further, the hub is sleeved with a disc spring, the adjusting nut is screwed to extrude the disc spring, the disc spring pushes the pressure plate to compress the second friction plate, the overload torque of the shaft coupling can be adjusted, and the slip problem can be avoided after the second friction plate is worn.

[0012] Further, the hub is sleeved with a disc spring, the adjusting nut is screwed to extrude the disc spring, the disc spring pushes the pressure plate to compress the second friction plate, the overload torque of the shaft coupling can be adjusted, and the slip problem can be avoided after the second friction plate is worn.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) two internal hexagonal screws are loosened, the two half-round lining rings are separated, the half-round lining ring no longer tightly holds the positioning ring, the first friction plate and the second friction plate are separated in a half-round shape and fall off from the hub along the axial space, and the first friction plate and the second friction plate are replaced in a narrow space.

[0015] (2) after the first friction plate and the second friction plate are worn, the adjusting nut is screwed to extrude the disc spring, the disc spring extrudes the second friction plate and the half-round lining ring through the pressure plate, and the first friction plate, the half-round lining ring and the second friction plate stably transmit power. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is the sectional view of the utility model;

[0018] Figure 3 It is the schematic view of the utility model split;

[0019] Figure 4 It is the schematic view of the first friction plate and the positioning ring of the utility model;

[0020] Figure 5 It is the schematic view of the internal hexagonal screw and the half-round lining ring of the utility model.

[0021] In the drawing: 1, hub; 2, adjusting nut; 3, first friction plate; 4, second friction plate; 5, screw hole piece; 6, internal hexagonal screw; 7, half-round lining ring; 8, pressure plate; 9, disc spring; 10, positioning ring; 11, fixed screw; 12, screw hole; 13, stop washer. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of the present application.

[0023] Embodiment:

[0024] Please refer to Figures 1-5 The present application provides a technical solution: an overload protection coupling with quickly replaced friction plates, comprising a hub 1, a pressure plate 8 is sleeved on the hub 1, and an adjusting nut 2 is installed on the hub 1.

[0025] A first friction plate 3 is sleeved on the hub 1, a second friction plate 4 is arranged between the first friction plate 3 and the pressure plate 8, and the first friction plate 3 and the second friction plate 4 are both arranged in a semicircle shape, two semicircular first friction plates 3 are spliced with each other to realize the installation of the first friction plate 3 and the hub 1, and the second friction plate 4 is also spliced with each other to form a whole.

[0026] A positioning ring 10 is arranged and connected with the first friction plate 3 and the second friction plate 4, and the positioning ring 10 is also arranged in a semicircle shape, as shown in Figure 3 After the semicircular first friction plate 3 and the second friction plate 4 are connected with the positioning ring 10, the cross section is in an L shape, which facilitates the splicing and installation of the first friction plate 3 and the second friction plate 4 on the hub 1.

[0027] A lock is sleeved on the positioning ring 10 to enable the first friction plate 3 and the second friction plate 4 to be installed on the hub 1, and when the lock tightly holds the positioning ring 10, the splicing of the first friction plate 3 and the second friction plate 4 is realized.

[0028] In the embodiment, as shown in Figure 1 and Figure 2 A disc spring 9 is sleeved on the hub 1, the adjusting nut 2 is twisted to extrude the disc spring 9, the disc spring 9 pushes the pressure plate 8 to press the second friction plate 4, the second friction plate 4 is kept in close contact with the semicircular lining ring 7, and when the second friction plate 4 is worn, the tightening of the adjusting nut 2 can avoid the problem of slipping.

[0029] In the embodiment, as shown in Figure 2 and Figure 3As shown, the hub 1 is provided with a retainer washer 13, which is located between the adjusting nut 2 and the disc spring 9, and can prevent the adjusting nut 2 from loosening, and can keep the adjusting nut 2 stable when the adjusting nut 2 is vibrated.

[0030] In the embodiment, as shown in Figure 2 and Figure 3 The hub 1 is provided with a fixing part, which can improve the stability of the connection between the hub 1 and the shaft, and can prevent the hub 1 from loosening after being connected with the shaft.

[0031] In the embodiment, as shown in Figure 2 and Figure 3 The fixing part includes a threaded hole 12, and a fixing screw 11 is screwed in the threaded hole 12, and a corresponding hole is provided on the shaft, and the fixing screw 11 is screwed with the hole on the shaft, so that the hub 1 cannot slide on the shaft.

[0032] In the embodiment, as shown in Figure 3 and Figure 5 The locker includes two half-round backing rings 7, which are spliced by fasteners, and the fasteners can splice the two half-round backing rings 7 with each other, and keep the half-round backing rings 7 fixed on the positioning ring 10.

[0033] In the embodiment, as shown in Figure 3 and Figure 5 The fastener includes a threaded hole piece 5, which is connected with the half-round backing ring 7, and a hexagonal socket head cap screw 6 is screwed in the threaded hole piece 5, and loosening the two hexagonal socket head cap screws 6 can realize the combination and disassembly of the two half-round backing rings 7.

[0034] Specifically, when the first friction plate 3 and the second friction plate 4 need to be replaced, the two hexagonal socket head cap screws 6 are loosened first, at this time, the two half-round backing rings 7 are separated from each other, and the half-round backing ring 7 no longer tightly holds the positioning ring 10, at this time, the first friction plate 3 and the second friction plate 4 connected with the positioning ring 10 are in a loosened state, and since the first friction plate 3 and the second friction plate 4 are half-round, the two first friction plates 3 and the second friction plates 4 can be quickly disassembled.

[0035] When the second friction plate 4 needs to be fastened, the adjusting nut 2 is tightened to move to the left, the adjusting nut 2 presses the disc spring 9, the elastic force of the disc spring 9 pushes the pressure plate 8 to press the second friction plate 4, the second friction plate 4 pushes the half-round backing ring 7 to tightly contact with the first friction plate 3, so that the first friction plate 3, the half-round backing ring 7 and the second friction plate 4 cannot easily slip, and the power transmission is stable.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change friction plate overload protection coupling, characterized by, Including: The hub (1) is sleeved with a pressure plate (8), and an adjusting nut (2) is installed on the hub (1); A first friction plate (3) is sleeved on the hub (1), a second friction plate (4) is arranged between the first friction plate (3) and the pressure plate (8), and the first friction plate (3) and the second friction plate (4) are both arranged in a semicircular shape; A plurality of positioning rings (10) are arranged and connected with the first friction plate (3) and the second friction plate (4); A locker is sleeved with the positioning ring (10), so that the first friction plate (3) and the second friction plate (4) are installed on the hub (1).

2. A quick change pad over load protection coupling as claimed in claim 1 wherein: The hub (1) is sleeved with a disc spring (9), the adjusting nut (2) is twisted to extrude the disc spring (9), and the disc spring (9) pushes the pressure plate (8) to compress the second friction plate (4).

3. A quickly-replaceable friction plate overload protection coupling according to claim 2, characterized in that: A retreat stop washer (13) is installed on the hub (1), and the retreat stop washer (13) is located between the adjusting nut (2) and the disc spring (9).

4. A quick change pad over load protection coupling as claimed in claim 1 wherein: A fixing member is arranged on the surface of the hub (1), and the fixing member improves the stability of the connection between the hub (1) and the shaft.

5. A quickly replaceable friction plate overload protection coupling according to claim 4, characterized in that: The fixing member includes a threaded hole (12), and a fixing screw (11) is screwed in the threaded hole (12).

6. A quickly-replaceable friction plate overload protection coupling according to claim 1, characterized in that: The locker includes two semicircular lining rings (7), and the two semicircular lining rings (7) are spliced by fasteners.

7. A quickly replaceable friction plate overload protection coupling according to claim 6, characterized in that: The fastener includes a threaded hole piece (5), the threaded hole piece (5) is connected with the semicircular lining ring (7), And a hexagonal socket screw (6) is screwed in the threaded hole piece (5).

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