Shaft sleeve and brake with same

Abstract

The utility model provides a shaft sleeve and a brake with the shaft sleeve, and belongs to the technical field of brakes, the shaft sleeve comprises a body, the body is provided with two shaft ends oppositely arranged in the axial direction of the body, each shaft end is provided with a glue storage groove, and each glue storage groove is provided with a blocking face extending in the axial direction of the body; the body is provided with a middle hole used for being matched with a transmission shaft and a peripheral face matched with a friction disc, the middle hole is bonded with the periphery of the transmission shaft, the transmission shaft drives the friction disc to rotate through the shaft sleeve, and the glue storage groove is used for containing and blocking glue or oil stains on the transmission shaft. The brake is provided with the shaft sleeve. According to the shaft sleeve and the brake with the shaft sleeve, the shaft sleeve and the transmission shaft are connected in a bonding mode, safety is high, and the braking effect of the brake can be guaranteed; the glue storage groove not only can store glue scraped away during installation, but also can ensure that the glue or oil stain cannot enter a friction area of the friction disc.

Description

Technical Field

[0001] The utility model belongs to the technical field of brakes, and particularly relates to a shaft sleeve and a brake having the same. Background Art

[0002] The friction disc in the brake is connected to the drive shaft of the equipment through a sleeve. During normal operation, the friction disc, sleeve and drive shaft rotate synchronously. During braking, the friction disc is abutted by the tail plate in the brake, and thus stops due to friction resistance. Then the sleeve and drive shaft connected to the friction disc both stop rotating. The drive shaft and sleeve are usually connected by an interference fit. However, when the size of the drive shaft is large and the size of the sleeve outer ring remains unchanged, the radial thickness of the sleeve will be very small. The sleeve does not have sufficient strength to cooperate with the drive shaft through an interference fit, and the oil on the drive shaft can easily contaminate the friction area, affecting the braking effect of the brake and having low safety. Utility Model Content

[0003] An embodiment of the present utility model provides a shaft sleeve and a brake having the same, aiming to solve the technical problems that the interference fit between the existing drive shaft and the shaft sleeve is not suitable for the case where the drive shaft size is larger, and the oil stains on the drive shaft easily contaminate the friction area, thereby affecting the braking effect of the brake and having low safety.

[0004] In a first aspect, an embodiment of the present invention provides a sleeve that is rotatable about its own axis, wherein the axis extends in an axial direction, and comprises a body, wherein the body has two axial ends disposed opposite to each other in the axial direction, each of the axial ends being provided with a glue storage groove, wherein the glue storage groove has a blocking surface extending in the axial direction of the body;

[0005] The main body has a central hole for cooperating with the transmission shaft and an outer peripheral surface for cooperating with the friction disk. The central hole is bonded to the outer periphery of the transmission shaft. The transmission shaft drives the friction disk to rotate through the sleeve. The glue storage groove is used to accommodate and block the adhesive or oil on the transmission shaft.

[0006] In combination with the first aspect, in a possible implementation, the inner circumferential surface of the body is recessed to form the glue storage groove, the side of the recessed surface facing away from the axis of the body is the blocking surface, and the glue storage groove has a glue inlet facing the axis of the body.

[0007] In combination with the first aspect, in a possible implementation, the glue storage grooves are symmetrically arranged at the two shaft ends, and each shaft end is provided with a plurality of glue storage grooves, and the plurality of glue storage grooves are distributed at intervals along the axial direction of the body.

[0008] In combination with the first aspect, in a possible implementation, among the multiple glue storage grooves located at the same end of the shaft, a connecting hole is further provided between two adjacent glue storage grooves and between the glue storage groove closest to the end face of the main body and the end face, and the diameter of the connecting hole is smaller than the diameter of the blocking surface and larger than the diameter of the middle hole.

[0009] In combination with the first aspect, in a possible implementation, both end faces of the body are provided with retaining rings protruding in the axial direction, the retaining rings and the end faces of the body are combined to form the glue storage groove, and the inner circumference of the retaining rings forms the blocking surface.

[0010] In combination with the first aspect, in a possible implementation, the retaining ring is a glue-absorbing sponge.

[0011] In combination with the first aspect, in a possible implementation, there are multiple retaining rings from the inside to the outside, and the axial lengths of the multiple retaining rings increase successively from the inside to the outside. The innermost retaining ring and the end face of the main body, and the two adjacent retaining rings and the end face of the main body form the glue storage groove, and the innermost glue storage groove has a glue inlet facing the axial direction of the main body.

[0012] In combination with the first aspect, in a possible implementation, the end face of the main body is recessed to form a mating groove, and the main body is further provided with a stop cover assembled with the mating groove, the stop cover includes a connecting ring that fits into the inner circumference of the mating groove, and a connecting cover fixed to one axial end of the connecting ring, the inner ring of the connecting cover is used to abut against the transmission shaft.

[0013] In conjunction with the first aspect, in one possible implementation, the connecting cover is fixedly connected to an axial end of the connecting ring facing away from the main body, the inner circumferential surface of the connecting ring forms the blocking surface, and the connecting cover, the connecting ring, and the side wall of the matching groove together form the glue storage groove;

[0014] Alternatively, the connecting cover is fixed to an axial end of the connecting ring close to the main body, the inner side of the connecting cover is bent in a direction away from the main body, the inner circumference of the bent part forms the blocking surface, and the connecting cover and the end face of the main body form the glue storage groove.

[0015] Compared with the prior art, the solution shown in the embodiment of the present application requires adhesive to be applied to the inner circumference of the center hole or the outer circumference of the drive shaft before the sleeve is assembled with the drive shaft. During installation, the sleeve needs to be pushed along the axial direction of the drive shaft to the installation position. The gap between the center hole of the sleeve and the drive shaft is small. Therefore, during the pushing process of the sleeve, excess glue on the drive shaft will be scraped away by the sleeve and accumulated in the glue storage groove. After installation, it can be used normally. The sleeve and the drive shaft of the utility model are connected by bonding, which overcomes the problem that the traditional interference fit is not suitable for large drive shafts. The sleeve and the drive shaft adopt a clearance fit, which is highly safe and can ensure the braking effect of the brake. The glue storage groove not only stores the glue scraped away during installation, but also, during use, if the glue is not completely solidified, the glue thrown out by the drive shaft during rotation will also enter the glue storage groove, thereby preventing adhesive or oil from entering the friction area of ​​the friction disc, ensuring the normal operation of the brake.

[0016] In a second aspect, an embodiment of the present invention further provides a brake having the above-mentioned shaft sleeve.

[0017] Compared with the prior art, the solution shown in the embodiment of the present application is that after the sleeve is installed, the outer ring cooperates with the friction disc in the brake, and the inner ring is sleeved on the drive shaft and bonded to the drive shaft. Since a glue storage groove is provided on the sleeve, when the drive shaft drives the sleeve and the friction disc to rotate, unsolidified adhesive or oil stains can be prevented from being thrown into the friction area of ​​the friction disc, thereby preventing the torque of the brake from being reduced or even failing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the main structure of a shaft sleeve provided in the first embodiment of the present utility model;

[0019] Figure 2 For the Figure 1 Schematic diagram of the cross-sectional structure along the AA line;

[0020] Figure 3 A schematic cross-sectional view of a shaft sleeve provided in a second embodiment of the present utility model;

[0021] Figure 4 A schematic cross-sectional view of a shaft sleeve provided in a third embodiment of the present utility model;

[0022] Figure 5 A schematic cross-sectional view of a shaft sleeve provided in a fourth embodiment of the present utility model;

[0023] Figure 6 A schematic cross-sectional view of a shaft sleeve according to a fifth embodiment of the present invention;

[0024] Figure 7 A schematic cross-sectional view of a shaft sleeve provided in a sixth embodiment of the present utility model;

[0025] Figure 8 A schematic cross-sectional view of a shaft sleeve provided in a seventh embodiment of the present utility model;

[0026] Figure 9 A schematic cross-sectional view of a shaft sleeve provided in an eighth embodiment of the present utility model;

[0027] Figure 10 A schematic cross-sectional view of a shaft sleeve provided in a ninth embodiment of the present invention;

[0028] Figure 11 A schematic cross-sectional view of a shaft sleeve provided in a tenth embodiment of the present utility model;

[0029] Figure 12 A schematic cross-sectional view of a shaft sleeve according to an eleventh embodiment of the present invention;

[0030] Figure 13 This is a schematic cross-sectional structural diagram of a brake provided in the first embodiment of the present utility model.

[0031] Description of reference numerals:

[0032] 10-Body; 11-Mesopore;

[0033] 20-glue storage tank; 21-blocking surface; 22-glue inlet;

[0034] 30- communicating hole;

[0035] 40- retaining ring;

[0036] 50-blocking cover; 51-connecting ring; 52-connecting cover;

[0037] 60-friction disc;

[0038] 70-Drive shaft. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is to distinguish different objects rather than to describe a specific order.

[0041] In the claims, specification and above-mentioned drawings of the present invention, the term "inner" refers to the direction toward the axis of the sleeve, and the term "outer" refers to the direction away from the sleeve to obtain the axis; other directional words, unless otherwise clearly defined, such as the use of terms "upper", "lower", "top", "bottom", "front", "back", "center", "lateral", "longitudinal", "horizontal", "vertical", "left", "right", "clockwise", "counterclockwise", "high", "low" and the like to indicate directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so they cannot be understood as limiting the specific protection scope of the present invention.

[0042] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixed connection" are used, they should be understood in a broad sense, that is, any connection method without any displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0043] In the claims, description and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0044] In the accompanying drawings of the present invention, Figure 2-13 The center line indicates that the sleeve structure is an axisymmetric structure, so only half of it is shown in the figure.

[0045] Please also refer to Figures 1 to 13 The shaft sleeve provided by the present invention will now be described. The shaft sleeve is rotatable about its own axis, which extends in the axial direction. It includes a body 10 having two axial ends disposed opposite each other in the axial direction. Each axial end is provided with a glue groove 20, which has a blocking surface 21 extending in the axial direction of the body 10. The body 10 has a central hole 11 for mating with the drive shaft 70 and an outer peripheral surface for mating with the friction disk 60. The central hole 11 is bonded to the outer periphery of the drive shaft 70. The drive shaft 70 drives the friction disk 60 to rotate through the shaft sleeve. The glue groove 20 is used to accommodate and block glue or oil stains on the drive shaft.

[0046] Compared to the prior art, the bushing provided in this embodiment requires adhesive to be applied to the inner circumference of the center hole 11 or the outer circumference of the drive shaft 70 before the bushing is assembled with the drive shaft 70. During installation, the bushing needs to be pushed along the axial direction of the drive shaft 70 to the installation position. The gap between the center hole 11 of the bushing and the drive shaft 70 is small. Therefore, during the pushing process, excess glue on the drive shaft 70 is scraped away by the bushing and enters the glue storage groove 20 where it accumulates. After installation, the bushing can be used normally. The bushing of the present utility model is connected to the drive shaft 70 by adhesive bonding, overcoming the problem that the traditional interference fit is not suitable for large drive shafts. The clearance fit between the bushing and the drive shaft 70 provides high safety and ensures the braking effect of the brake. The glue storage groove 20 not only stores the glue scraped away during installation, but also, during use, if the glue is not completely solidified, the glue thrown out by the rotation of the drive shaft 70 will enter the glue storage groove 20, thereby preventing adhesive or oil from entering the friction area of ​​the friction disc 60, ensuring the normal operation of the brake.

[0047] In some embodiments, a specific embodiment of the above-mentioned glue storage tank 20 can be as follows Figures 1 to 5 The structure shown. Figures 1 to 5 The inner circumference of the body 10 is recessed to form a glue reservoir 20. The side of the recessed portion facing away from the axis of the body 10 serves as a blocking surface 21. The glue reservoir 20 has a glue inlet facing the axis of the body 10. Optionally, the glue reservoir 20 may be spaced apart from the end surface of the body 10, or one end may extend to the end surface of the body 10. The cross-sectional shape of the glue reservoir 20 may be rectangular, trapezoidal, circular, elliptical, etc., without limitation herein.

[0048] In the glue storage tank 20 of this embodiment, when the adhesive enters the interior, it can be stored inside, and the blocking surface 21 can prevent the adhesive from being thrown out, thereby ensuring the normal operation of the brake.

[0049] In some embodiments, an improved embodiment of the above-mentioned glue storage tank 20 can be adopted as follows Figures 4 and 5 The structure shown. Figures 4 and 5 The glue storage grooves 20 are symmetrically arranged at both shaft ends, with multiple glue storage grooves 20 provided at each shaft end. The multiple glue storage grooves 20 are spaced apart along the axial direction of the body 10. By providing multiple glue storage grooves 20, more glue can be stored. Specifically, the amount of adhesive applied to the transmission shaft 70 can be used to determine the number of glue storage grooves 20 in the shaft sleeve.

[0050] In some embodiments, an improved embodiment of the above-mentioned glue storage tank 20 can be adopted as follows Figure 5 The structure shown. Figure 5In the multiple adhesive reservoirs 20 located at the same shaft end, a connecting hole 30 is provided between two adjacent adhesive reservoirs 20, and between the adhesive reservoir 20 closest to the end face of the body 10 and that end face. The diameter of the connecting hole 30 is smaller than the diameter of the blocking surface 21, but larger than the diameter of the central hole 11. Once the adhesive enters one of the adhesive reservoirs 20, the connecting hole 30 connects the multiple adhesive reservoirs 20. When the bushing is pushed onto the drive shaft 70, the central hole 11 in the body 10 engages the drive shaft 70, and the inner wall of the connecting hole 30 is spaced from the drive shaft 70. Therefore, if the adhesive overflows from one adhesive reservoir 20, it can flow into the remaining adhesive reservoirs 20, preventing the adhesive from overflowing outside the body 10.

[0051] In some embodiments, a modified embodiment of the above-mentioned glue storage tank 20 can be adopted as follows Figures 6 to 8 The structure shown. Figures 6 to 8 Both end surfaces of the body 10 are axially protruding with retaining rings 40. The retaining rings 40 and the end surfaces of the body 10 enclose adhesive reservoirs 20, and the inner circumference of the retaining rings 40 forms a blocking surface 21. When the sleeve is mounted on the drive shaft 70, it scrapes the adhesive and accumulates it at the end of the body 10, i.e., in the adhesive reservoirs 20. When the drive shaft 70 rotates, the retaining rings 40 prevent the adhesive from being thrown out and entering the friction area of ​​the friction disc 60, thus ensuring normal operation of the brake.

[0052] It should be noted that the retaining ring 40 in this embodiment can be provided on the main body 10 alone or in combination with the main body 10. Figures 1 to 5 The glue storage groove 20 shown in FIG is commonly provided on the body 10, as shown in FIG. Figure 8 As shown, the body 10 is provided with a retaining ring 40 and a Figure 2 The glue storage tank 20 is shown.

[0053] In some embodiments, an improved embodiment of the retaining ring 40 can be as follows Figure 7 The structure shown. Figure 7 Multiple retaining rings 40 are provided from the inside out, and the axial lengths of the retaining rings 40 increase from the inside out. Glue storage grooves 20 are formed between the innermost retaining ring 40 and the end face of the body 10, and between two adjacent retaining rings 40 and the end face of the body 10. The innermost retaining groove 20 has a glue inlet oriented axially toward the body 10, while the remaining retaining grooves 20 have glue inlets facing away from the end face of the body 10. When the bushing is mounted on the drive shaft 70, the scraped adhesive first enters the innermost retaining groove 20. When this retaining groove 20 is filled with adhesive, it overflows from the end face of the retaining ring 40 and then enters the outer retaining grooves 20, allowing for more adhesive to be accommodated. The specific configuration can be selected based on actual needs.

[0054] Optionally, the axial lengths of the plurality of retaining rings 40 may also be equal, which is not limited here.

[0055] In some embodiments, a specific cooperation method of the retaining ring 40 and the main body 10 can be as follows. Not shown in the figure, the retaining ring 40 and the main body 10 are an integral structure or a separate structure. When the retaining ring 40 and the main body 10 are separate structures, the retaining ring 40 can be connected to the main body 10 by welding, bonding or clamping.

[0056] Specifically, the retaining ring 40 can be made of metal, plastic, rubber, or other materials, or can be a glue-absorbing sponge, without limitation. When the retaining ring 40 is a glue-absorbing sponge, the annular glue-absorbing sponge can be fixed to the end surface of the body 10 by gluing. The retaining ring 40 not only blocks the adhesive from being thrown out when the transmission shaft 70 rotates, but also absorbs some excess adhesive.

[0057] Optionally, after installation is completed, the axial length of the retaining ring 40 can be selected to extend beyond the brake in the axial direction, or can be selected not to extend beyond the brake.

[0058] In some embodiments, a modified embodiment of the above-mentioned glue storage tank 20 can be adopted as follows Figures 9 to 12 The structure shown. Figures 9 to 12 The end surface of the main body 10 is recessed to form a mating groove. The main body 10 is also provided with a blocking cover 50 assembled with the mating groove. The blocking cover 50 includes a connecting ring 51 that is matched (can be snapped) with the inner circumference of the mating groove, and a connecting cover 52 fixed to one axial end of the connecting ring 51. The inner ring of the connecting cover 52 is used to abut against the transmission shaft 70. Before installing the sleeve, first install one side block cover 50 in this embodiment on the transmission shaft 70. At this time, the block cover 50 is separated from the body 10. Then, apply adhesive on the center hole 11 of the body 10 or on the outer periphery of the transmission shaft 70, install the body 10 on the transmission shaft 70, and then install the other side block cover 50 on the transmission shaft 70. Then, slide the block cover 50 along the transmission shaft 70 close to the body 10 and install it into the matching groove. During this process, the block cover 50 will scrape the adhesive off the transmission shaft 70 and push it into the glue storage groove 20. Since the inner ring of the connecting cover 52 abuts against the transmission shaft 70, it can prevent the adhesive from flowing out of the glue storage groove 20 when the axis of the transmission shaft 70 tilts when the transmission shaft 70 is working, and the blocking effect on the adhesive is more prominent.

[0059] It should be noted that the retaining ring 50 in this embodiment can be provided on the main body 10 alone or in combination with the main body 10. Figures 1 to 5 The glue storage groove 20 shown in FIG is commonly provided on the body 10, as shown in FIG. Figure 10 As shown, the main body 10 is also provided with Figure 9 The cover 50 shown and the same Figure 2 The glue storage tank 20 shown in FIG. Figure 12 As shown, the main body 10 is also provided with Figure 11 The cover 50 shown and the same Figure 2 The glue storage tank 20 is shown.

[0060] In some embodiments, a specific embodiment of the above-mentioned glue storage tank 20 can be as follows Figures 9 and 10 The structure shown. Figures 9 and 10 The connecting cover 52 is fixedly connected to the axial end of the connecting ring 51 facing away from the body 10. The inner circumference of the connecting ring 51 forms the blocking surface 21. The connecting cover 52, the connecting ring 51, and the sidewalls of the matching groove together form the glue storage groove 20. In this embodiment, the connecting cover 52 can be parallel to the axial end surface of the body 10. The connecting cover 52 and the transmission shaft 70 have a clearance fit, thereby ensuring that the connecting cover 52 can be installed on the outer circumference of the transmission shaft 70.

[0061] Alternatively, see Figures 11 to 12 The connecting cover 52 is fixedly connected to the axial end of the connecting ring 51 near the main body 10. The inner side of the connecting cover 52 is bent away from the main body 10. The inner circumference of the bent portion forms a blocking surface 21. The connecting cover 52 and the end surface of the main body 10 enclose a glue storage groove 20. The blocking surface 21 in this embodiment extends not only axially along the main body 10, but also radially. The connecting cover 52 in this embodiment is elastic. Before installation, its inner diameter is slightly smaller than or equal to the diameter of the transmission shaft 70. After installation, the inner ring of the connecting cover 52 abuts the transmission shaft 70.

[0062] Optionally, the sleeve further includes an elastic member, which is clamped on the outer periphery of the body 10 and contacts the friction disc 60 to reduce the operating noise of the brake.

[0063] Based on the same inventive concept, see Figure 13 , an embodiment of the present application also provides a brake, including the above-mentioned sleeve.

[0064] Compared with the prior art, the brake provided in this embodiment has an outer ring that cooperates with the friction disc 60 in the brake after the sleeve is installed, and an inner ring is sleeved on the drive shaft 70 and bonded to the drive shaft 70. Since a glue storage groove 20 is provided on the sleeve, when the drive shaft 70 drives the sleeve and the friction disc 60 to rotate, unsolidified adhesive or oil stains can be prevented from being thrown into the friction area of ​​the friction disc 60, thereby preventing the torque of the brake from being reduced or even failing.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sleeve rotatable about its own axis, wherein the axis extends in the axial direction, characterized in that: The body comprises a main body having two axial ends arranged opposite to each other in the axial direction thereof, each axial end being provided with a glue storage groove, and the glue storage groove having a blocking surface extending in the axial direction of the body; The main body has a central hole for cooperating with the transmission shaft and an outer peripheral surface for cooperating with the friction disk. The central hole is bonded to the outer periphery of the transmission shaft. The transmission shaft drives the friction disk to rotate through the sleeve. The glue storage groove is used to accommodate and block the adhesive or oil on the transmission shaft.

2. The sleeve according to claim 1, wherein: The inner circumference of the body is concave to form the glue storage groove, and the side of the concave facing away from the axis of the body is the blocking surface. The glue storage groove has a glue inlet facing the axis of the body.

3. The sleeve according to claim 2, wherein: The glue storage grooves are symmetrically arranged at the two shaft ends, and each shaft end is provided with a plurality of glue storage grooves, and the plurality of glue storage grooves are distributed at intervals along the axial direction of the body.

4. The sleeve according to claim 3, wherein: Among the multiple glue storage grooves located at the same shaft end, a connecting hole is provided between two adjacent glue storage grooves and between the glue storage groove closest to the end face of the main body and the end face. The diameter of the connecting hole is smaller than the diameter of the blocking surface and larger than the diameter of the middle hole.

5. The sleeve according to any one of claims 1 to 4, characterized in that: Both end surfaces of the body are provided with retaining rings protruding in the axial direction. The retaining rings and the end surfaces of the body are combined to form the glue storage groove, and the inner circumference of the retaining rings forms the blocking surface.

6. The sleeve according to claim 5, wherein: The retaining ring is a glue-absorbing sponge.

7. The sleeve according to claim 5, wherein: There are multiple retaining rings from the inside to the outside, and the axial lengths of the multiple retaining rings increase from the inside to the outside. The innermost retaining ring and the end face of the main body, and the two adjacent retaining rings and the end face of the main body form the glue storage groove, and the innermost glue storage groove has a glue inlet facing the axial direction of the main body.

8. The sleeve according to any one of claims 1 to 4, wherein: The end face of the main body is recessed to form a mating groove, and the main body is also provided with a stop cover assembled with the mating groove. The stop cover includes a connecting ring that fits into the inner circumference of the mating groove, and a connecting cover fixed to one axial end of the connecting ring. The inner ring of the connecting cover is used to abut against the transmission shaft.

9. The sleeve according to claim 8, wherein: The connecting cover is fixed to an axial end of the connecting ring away from the main body, the inner circumference of the connecting ring forms the blocking surface, and the connecting cover, the connecting ring and the side wall of the matching groove together form the glue storage groove; Alternatively, the connecting cover is fixed to an axial end of the connecting ring close to the main body, the inner side of the connecting cover is bent in a direction away from the main body, the inner circumference of the bent part forms the blocking surface, and the connecting cover and the end face of the main body form the glue storage groove.

10. A brake, characterized in that: A shaft sleeve according to any one of claims 1 to 9.

Images