CN109340349B - Damping belt pulley for spring friction braking - Google Patents
Damping belt pulley for spring friction braking Download PDFInfo
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- CN109340349B CN109340349B CN201811227072.4A CN201811227072A CN109340349B CN 109340349 B CN109340349 B CN 109340349B CN 201811227072 A CN201811227072 A CN 201811227072A CN 109340349 B CN109340349 B CN 109340349B
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- 238000013016 damping Methods 0.000 title claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention relates to a damping belt pulley for spring friction braking, which comprises a belt hub, a mandrel, a damping spring, a friction braking ring, a first ball bearing, a second ball bearing, a damping braking frame, a connecting frame and a positioning ring, wherein the mandrel is provided with a flange part and a shaft body part, the damping spring, the damping braking frame, the connecting frame, the first ball bearing and the positioning ring are sleeved outside the shaft body part in sequence, one end of the damping spring is propped against the flange part, and the other end of the damping spring is propped against the damping braking frame; the damping braking frame is matched with the connecting frame by adopting a concave-convex structure; the friction braking spring is sleeved on the damping braking frame, and two ends of the friction braking spring respectively lean against the connecting frame and the second ball bearing; the friction stop ring is sleeved on the friction stop spring, and the friction stop ring is in interference fit with the belt hub; the second ball bearing is sleeved on the flange part of the mandrel and is limited by a positioning washer embedded on the inner wall of the belt hub. The invention has simple structure and is convenient for wide popularization.
Description
Technical Field
The invention belongs to the technical field of belt hubs for automobile generators, and particularly relates to a damping belt pulley for spring friction braking.
Background
The unidirectional belt wheel hub of the automobile generator is derived from Germany, and is widely applied to some high-grade automobiles in the world at present. The main functions of the unidirectional belt hub of the automobile generator are as follows: 1. the tension fluctuation of the front-end wheel system is reduced, and the service lives of all parts of the front-end wheel system are prolonged; 2. the rotation speed fluctuation of the front-end gear train is reduced, and the noise of the front-end gear train is reduced; 3. reverse impact is avoided, and a generator is effectively protected; 4. the energy consumption caused by the reverse rotation of the generator is reduced, and the energy is saved. The unidirectional belt hub of the automobile generator has the greatest advantages that vibration and fluctuation can be reduced when the belt conveying device works, particularly when the rotating speed changes, noise generated when the belt is connected with accessories is reduced, vibration generated by a belt system is reduced, current fluctuation is reduced, and the service life of the belt and the service life of a generator regulator are prolonged. It allows the generator (the largest mass in the accessory rotation system) to be relieved from torsional vibrations when the crankshaft is decelerating (perhaps only a few thousandths of a second), thereby reducing torque.
For example, patent document publication No. CN103363064B discloses a spring friction braked one-way coupling damping pulley, comprising a mandrel extending into a belt hub, an inner wall of the belt hub being pressed into a friction stop ring and a positioning sleeve, an outer diameter of the mandrel forming a convex ring, the convex ring having steps; the mandrel is sleeved with a gasket, and the gasket forms a step; the mandrel is sleeved with a damping spring, one end of the damping spring is propped against a convex ring of the mandrel, and the end face of the damping spring is propped against a step of the convex ring; the other end of the damping spring is propped against the gasket, and the end face of the head is propped against the step of the gasket; the gasket is sleeved outside and is matched with the friction sliding ring in a rotating way; the friction spring is sleeved outside the damping spring, one end of the friction spring is arranged in the friction sliding ring, the other end of the friction spring is arranged in the friction sliding ring, and the outer wall of the friction sliding ring is in clearance fit with the positioning sleeve; the inner diameters of the friction stop ring and the friction sliding ring are smaller than the outer diameter of the friction spring so as to increase the tension of the spring; the friction spring is locked with the friction stop ring and the friction sliding ring through friction, and the friction spring can be alternately separated from the friction stop ring and the friction sliding ring.
The unidirectional coupling damping belt pulley has the following defects: 1. a concave clamping groove is required to be formed on the threaded mandrel, and the manufacturing process is complex; 2. the assembled parts are more, and the assembly process is complex; 3. the structure is complex, the manufacturing cost is high, and the wide popularization is difficult.
Therefore, there is a need in the art to optimize the structure of the damper pulley.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a damping belt pulley for spring friction braking.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the damping belt pulley comprises a belt hub, a mandrel, a damping spring, a friction braking spring, a friction stop ring, a first ball bearing and a second ball bearing, wherein the mandrel, the damping spring, the friction braking spring, the friction stop ring, the first ball bearing and the second ball bearing are arranged in the belt hub; the damping spring, the damping braking frame, the connecting frame, the first ball bearing and the positioning ring are sequentially sleeved outside the shaft body of the mandrel, one end of the damping spring is abutted against the flange part of the mandrel, and the other end of the damping spring is abutted against the damping braking frame; the damping braking frame is matched with the connecting frame by adopting a concave-convex structure; the friction braking spring is sleeved outside the damping braking frame, and two ends of the friction braking spring respectively lean against the connecting frame and the second ball bearing; the friction stop ring is sleeved outside the friction stop spring, and the friction stop ring is in interference fit with the belt hub; the second ball bearing is sleeved outside the flange part of the mandrel and is limited by a positioning washer embedded in the inner wall of the belt hub.
As a preferable scheme, the shaft body of the mandrel comprises a connecting section, a middle section and a free section, wherein the connecting section, the middle section and the free section extend from one end of the flange part, the outer diameter of the connecting section is larger than that of the middle section, and the outer diameter of the middle section is larger than that of the free section; the damping spring is sleeved outside the connecting section, the damping braking frame and the connecting frame are sleeved outside the middle section, and the first ball bearing and the positioning ring are sleeved outside the free section.
As a preferred scheme, the end surface of the flange part of the mandrel, which is abutted against the damping spring, is provided with a first spiral surface and a first positioning step, and the first positioning step is used for being abutted against the end surface of the damping spring wire.
As an optimal scheme, the end surface of the damping braking frame, which is abutted against the damping spring, is a second spiral surface and a second positioning step, and the second positioning step is used for abutting against the other end surface of the damping spring wire.
As a preferable scheme, the damping braking frame is of a hollow convex ring structure and comprises a main body part and a protruding part, wherein the second spiral surface and the second positioning step are both positioned in the main body part, and the inner diameter of the protruding part is in clearance fit with the outer diameter of the middle section of the shaft body part of the mandrel; the friction braking spring is sleeved outside the main body of the damping braking frame.
Preferably, the friction braking spring comprises a spring coil and a bending part, and the main body part of the damping braking frame is provided with a mounting groove matched with the bending part of the friction braking spring.
As the preferable scheme, the connecting frame is of a hollow convex ring structure and comprises a main body part and a convex part, wherein the inner diameter of the main body part is matched with the outer diameter of the convex part of the damping braking frame, and the outer diameter of the main body part is larger than the outer diameter of the main body part of the damping braking frame and smaller than the outer diameter of the friction braking spring.
As a preferable scheme, a third ball bearing is sleeved outside the protruding part of the connecting frame, and two sides of the third ball bearing respectively lean against the first ball bearing and the main body part of the connecting frame; the outer diameter of the third ball bearing is matched with the inner diameter of the belt hub.
As a preferable scheme, a first oil-proof gasket is arranged between the third ball bearing and one end of the friction stop ring; and a second oil-proof gasket is arranged between the second ball bearing and the other end of the friction stop ring.
As a preferable scheme, the inner wall of the belt hub is provided with a limit groove matched with a positioning gasket, and the positioning gasket is embedded in the limit groove; the positioning washer is in clearance fit with the flange part of the mandrel.
Compared with the prior art, the invention has the beneficial effects that: the damping belt pulley for spring friction braking does not need to be provided with a concave clamping groove on the threaded mandrel, and the manufacturing process is simple; the assembled parts are fewer, and the assembly efficiency is high; reliable transmission, long service life, simple structure, low manufacturing cost and convenient wide popularization.
Drawings
FIG. 1 is a schematic diagram of a spring friction braked damper pulley according to a first embodiment of the present invention;
FIG. 2 is a schematic illustration of the structure of the spindle of a spring friction braked damper pulley according to a first embodiment of the present invention;
FIG. 3 is a schematic view showing another state of a spindle of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 4 is a schematic view of a damper spring of a damper pulley for spring friction braking according to an embodiment of the present invention;
fig. 5 is a schematic structural view showing another state of a damper spring of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 6 is a schematic view of a damper brake carrier for a damper pulley for spring friction braking according to the first embodiment of the present invention;
fig. 7 is a schematic structural view showing another state of a damper brake frame of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 8 is a schematic view of a friction brake spring of a damper pulley for spring friction braking according to a first embodiment of the present invention;
fig. 9 is a schematic structural view of another state of a friction brake spring of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 10 is a schematic view of the friction stop ring of a spring friction braked damper pulley according to the first embodiment of the present invention;
FIG. 11 is a schematic view of another state of the friction stop ring of the damper pulley of the spring friction brake according to the first embodiment of the present invention;
FIG. 12 is a schematic view of a spring friction braked damper pulley link in accordance with one embodiment of the present invention;
FIG. 13 is a schematic view showing another state of a link of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 14 is a schematic view of a first oil resistant pad of a spring friction braked damper pulley according to one embodiment of the present invention;
FIG. 15 is a schematic view showing another state of a first oil-repellent pad of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 16 is a schematic illustration of a second oil resistant pad of a spring friction braked damper pulley in accordance with an embodiment of the present invention;
FIG. 17 is a schematic view showing another state of a second oil-repellent pad of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 18 is a schematic view of a positioning washer for a spring friction braked damper pulley according to the first embodiment of the present invention;
FIG. 19 is a schematic view showing another state of a positioning washer of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 20 is a schematic view of a retainer ring for a spring friction braked damper pulley according to an embodiment of the present invention;
FIG. 21 is a schematic view showing another state of a retainer ring of a damper pulley for spring friction braking according to the first embodiment of the present invention;
FIG. 22 is a schematic illustration of a spring friction braked belt hub according to an embodiment of the present invention;
FIG. 23 is a schematic diagram of a spring friction braked damper pulley according to a second embodiment of the present invention;
fig. 24 is a schematic structural view of a connection frame of a damper pulley for spring friction braking according to a second embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort. In addition, directional terms mentioned in the following embodiments, for example: left, right, etc., are only with reference to the orientation of the drawings. Thus, the directional terminology is used for purposes of illustration and is not intended to be limiting of the invention.
Embodiment one:
as shown in fig. 1 to 22, the spring friction braking damper pulley of the present embodiment includes a spindle 1, a damper spring 2, a damper brake frame 3, a friction brake spring 4, a friction brake ring 5, a connection frame 6, a first oil-proof washer 7, a second oil-proof washer 8, a second ball bearing 9, a third ball bearing 10, a positioning washer 11, a first ball bearing 12, a positioning ring 13, and a belt hub 14.
As shown in fig. 2, the mandrel 1 has a flange portion 1-9 and a shaft body portion, the left end face of the flange portion 1-8 has a first helicoid having a start position 1-2 and an end position 1-3, and the left end face of the flange portion 1-8 also has a first positioning step 1-1. The shaft body of the mandrel 1 comprises a connecting section 1-4, a middle section 1-5 and a free section 1-6, wherein the left end of the flange part 1-9 extends leftwards, the outer diameter of the connecting section 1-4 is larger than that of the middle section 1-5, and the outer diameter of the middle section 1-5 is larger than that of the free section 1-6. The damping spring 2, the damping braking frame 3, the connecting frame 6, the first oil-proof gasket 7, the third ball bearing 10, the first ball bearing 12 and the positioning ring 13 are sleeved outside the shaft body of the mandrel in sequence; specifically, the damping spring 2 is sleeved outside the connecting section 1-4 of the shaft body of the mandrel, the right end of the damping spring 2 is abutted against the left side of the flange part 1-9 of the mandrel, and the damping brake frame 3 is sleeved outside the middle section 1-5 of the shaft body of the mandrel, so that the left end of the damping spring 2 is abutted against the right side of the damping brake frame 3. As shown in fig. 4 and 5, the damping spring 2 is coiled by square steel wires, and the square steel wires have the characteristics of large elastic torque and small volume; the damper spring 2 has a left end portion 2-1 and a right end portion 2-3, the left end portion 2-1 having a left spring wire end face 2-2, and the right end portion 2-3 having a right spring wire end face 2-4. As shown in fig. 6 and 7, the damping brake frame 3 has a hollow convex ring structure, and comprises a main body part and a convex part, wherein the inner cavity of the main body part is provided with a second spiral surface 3-2 and a second positioning step 3-1, and the second spiral surface 3-2 faces to the right side and is provided with a starting position 3-3; the inner diameter 3-5 of the protruding part is in clearance fit with the outer diameter of the middle section 1-5 of the shaft body of the mandrel. The right end part 2-3 of the damping spring is abutted against the first spiral surface of the flange part of the mandrel, and the right spring wire end surface 2-4 of the damping spring is abutted against the first positioning step 1-1, so that the damping spring 2 is prevented from moving relative to the mandrel 1; the left end 2-1 of the damper spring 2 abuts against the second spiral surface 3-2 of the damper brake frame, and the left wire end surface 2-2 of the damper spring abuts against the second positioning step 3-1, preventing the damper spring 2 from moving relative to the damper brake frame 3.
In addition, as shown in fig. 7, an end surface of the damper brake bracket 3, which is connected to the boss, is provided with a mounting groove 3-7, and the mounting groove 3-7 is used for mounting the friction brake spring 4. Specifically, as shown in fig. 8 and 9, the friction brake spring 4 includes a coil 4-1 and a bent portion 4-2, the bent portion 4-2 of the friction brake spring is fitted in the mounting groove 3-7 of the damper brake bracket, and the coil 4-1 of the friction brake spring is enclosed on the main body portion of the damper brake bracket and extends rightward to the outside of the damper spring. As shown in fig. 10 and 11, the friction stop ring 5 is of a hollow ring structure, and the inner diameter 5-2 of the friction stop ring is matched with the outer diameter of the friction brake spring 4, so that the friction stop ring 5 is sleeved outside the friction brake spring 4; the outer diameter 5-1 of the friction stop ring is sized to fit within the first bore 14-1 of the belt hub so that the friction stop ring 5 fits within the belt hub. The right end of the friction stop ring 5 is flush with the right end of the friction brake spring 4, the right ends of the friction stop ring 5 and the friction brake spring 4 are abutted against and provided with a second oil-proof gasket 8, as shown in fig. 16 and 17, the second oil-proof gasket 8 is of a ring structure, the outer diameter of the second oil-proof gasket 8 is matched with the size of the second inner hole 14-2 of the belt hub, and the size of the second inner hole 14-2 of the belt hub is larger than that of the first inner hole 14-1. A second ball bearing 9 is arranged in a second inner hole 14-2 of the belt hub, the second ball bearing 9 is sleeved on the flange part 1-9 of the mandrel, the left side of the second ball bearing 9 abuts against the right side of the second oil-proof gasket 8, and the right side of the second ball bearing 9 is limited by a positioning gasket 11; specifically, as shown in fig. 22, a limiting groove 14-3 is formed in the second inner hole 14-2 of the belt hub, the limiting groove 14-3 is of an annular structure, the limiting groove 14-3 is internally used for being embedded with a positioning washer 11, as shown in fig. 18 and 19, the positioning washer 11 is of a ring structure and is matched with the structure of the limiting groove 14-3, and the positioning washer 11 is in clearance fit with the flange part 1-9 of the mandrel.
The connecting frame 6 is fitted over the spindle 1 so as to abut against the left end of the coils 4-1 of the friction brake spring. Specifically, as shown in fig. 12 and 13, the connecting frame 6 is of a hollow convex ring structure, and comprises a main body part 6-6 and a convex part 6-1, wherein the inner diameter 6-2 of the main body part is matched with the outer diameter 3-6 of the convex part of the shock absorption braking frame, so that the connecting frame 6 is matched with the shock absorption braking frame 3 through a concave-convex structure, and the structural stability is good. The outer diameter of the main body portion 6-6 of the connection frame is larger than the outer diameter of the main body portion of the damper brake frame and smaller than the outer diameter of the friction brake spring, so that the left end of the coil 4-1 of the friction brake spring abuts against the position where the connection frame protrudes from the damper brake frame, and the connection frame 6 is in clearance fit with the friction brake coil 5. The inner diameter 6-4 of the protruding part of the connecting frame is in clearance fit with the outer diameter of the middle section 1-5 of the mandrel, so that the inner diameter 6-4 of the protruding part of the connecting frame is sleeved outside the middle section 1-5 of the mandrel.
In addition, as shown in FIG. 13, a step transition structure 6-3 is provided between the main body portion 6-6 and the boss portion 6-1 of the coupling frame, and the step transition structure 6-3 is provided to constitute a relief space for mounting the first oil resistant gasket 7. As shown in fig. 14 and 15, the first oil resistant gasket 7 is of a ring structure, and the right side of the first oil resistant gasket 7 is mounted against the left end of the friction stopper 5 such that the left side of the mounted first oil resistant gasket 7 is flush with the right side of the boss 6-1 of the connecting frame; the outer diameter of the first oil-resistant gasket 7 is matched with the size of the first inner hole 14-1 of the belt hub so that the first oil-resistant gasket 7 is installed in the belt hub 14; the first oil resistant gasket 7 has an inner diameter greater than the outer diameter of the stepped transition structure 6-3. A third ball bearing 10 is sleeved outside the protruding part 6-1 of the connecting frame, the right side of the third ball bearing 10 is abutted against the left side of the first oil-proof gasket 7, and the left side of the third ball bearing 10 is flush with the connecting position of the middle section 1-5 and the free section 1-6 of the mandrel; the outer diameter of the third ball bearing 10 matches the size of the first bore 14-1 of the belt hub so that the third ball bearing 10 fits within the belt hub 14; and the arrangement of the third ball bearing ensures that the support between the mandrel and the belt hub is more reliable. The left side of the third ball bearing 10 is abutted against and provided with a first ball bearing 12, the first ball bearing 12 is sleeved outside the free section 1-6 of the mandrel, and the right side of the first ball bearing 12 is abutted against the left side of the third ball bearing 10 and the connecting position of the middle section 1-5 and the free section 1-6 of the mandrel; the outer diameter of the first ball bearing 12 matches the size of the first inner bore 14-1 of the belt hub so that the first ball bearing 12 fits within the belt hub 14 with the left side of the first ball bearing 12 flush with the left side of the belt hub. As shown in fig. 20 and 21, the positioning ring 13 has a sleeve structure, the inner diameter 13-1 of the positioning ring 13 is matched with the outer diameter of the free section 1-6 of the mandrel, so that the open end of the positioning ring is sleeved along the free section of the mandrel, after the installation is completed, the end face 1-7 of the free section of the mandrel is abutted against the closed end of the positioning ring 13, and the end face 13-2 of the open end of the positioning ring is abutted against the left end of the first ball bearing 12, so as to perform positioning. In addition, the closed end of the positioning ring 13 is provided with a through hole.
When the torque direction of the friction brake coil 5 is opposite to the coiling direction of the friction brake spring 4, the outer diameter of the friction brake spring 4 generates expansion force, and the friction force is generated with the inner diameter of the friction brake coil 5 to generate a locking state. When the torque rotation direction of the friction brake coil 5 is the same as the winding direction of the friction brake spring 4, the outer diameter of the friction brake spring 4 is deformed and contracted, and the friction force with the inner diameter of the friction brake coil 5 is released to be in a free state, thereby interrupting the transmission of power.
In addition, when the belt wheel hub 14 rotates, the belt wheel hub 14 drives the friction stop ring 5 to rotate, the friction stop ring 5 drives the friction brake spring 4 to rotate, the friction brake spring 4 drives the damping brake frame 3 to rotate, and the damping brake frame 3 drives the damping spring 2 to expand outwards, so that the damping effect is realized, and the running stability of the whole belt pulley is good.
The damping belt pulley for friction braking of the spring does not need to be provided with a concave clamping groove on the threaded mandrel, and the manufacturing process is simple; the assembled parts are fewer, and the assembly efficiency is high; reliable transmission, long service life, simple structure, low manufacturing cost and convenient wide popularization.
Embodiment two:
the damper pulley for spring friction braking of the present embodiment is different from the first embodiment in that:
as shown in fig. 23 and 24, the damper pulley of the spring friction brake of the present embodiment omits the provision of the third ball bearing, and accordingly, the structure of the coupling frame can be further optimized. Specifically, the connecting frame 16 includes a main body portion and a protruding portion, the inner diameter 16-1 of the connecting frame is matched with the outer diameter of the protruding portion of the friction braking frame, and the first oil-proof gasket is located outside the protruding portion of the connecting frame, so that a step transition structure is not required to be formed; moreover, the left end of the boss of the connecting frame and the left end of the boss of the friction brake frame are flush and simultaneously abut against the first ball bearing. The structure of the damper pulley for spring friction braking of this embodiment is further optimized.
Other structures may be referred to in embodiment one.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is only illustrative of the preferred embodiments and principles of the present invention, and changes in specific embodiments will occur to those skilled in the art upon consideration of the teachings provided herein, and such changes are intended to be included within the scope of the invention as defined by the claims.
Claims (9)
1. The damping belt pulley comprises a belt hub, a mandrel, a damping spring, a friction braking spring, a friction stopping ring, a first ball bearing and a second ball bearing, wherein the mandrel, the damping spring, the friction braking spring, the friction stopping ring, the first ball bearing and the second ball bearing are arranged in the belt hub; the damping spring, the damping braking frame, the connecting frame, the first ball bearing and the positioning ring are sequentially sleeved outside the shaft body of the mandrel, one end of the damping spring is abutted against the flange part of the mandrel, and the other end of the damping spring is abutted against the damping braking frame; the damping braking frame is matched with the connecting frame by adopting a concave-convex structure; the friction braking spring is sleeved outside the damping braking frame, and two ends of the friction braking spring respectively lean against the connecting frame and the second ball bearing; the friction stop ring is sleeved outside the friction stop spring, and the friction stop ring is in interference fit with the belt hub; the second ball bearing is sleeved outside the flange part of the mandrel and is limited by a positioning washer embedded in the inner wall of the belt hub;
the shaft body of the mandrel comprises a connecting section, a middle section and a free section, wherein the connecting section, the middle section and the free section extend from one end of the flange part, the outer diameter of the connecting section is larger than that of the middle section, and the outer diameter of the middle section is larger than that of the free section; the damping spring is sleeved outside the connecting section, the damping braking frame and the connecting frame are sleeved outside the middle section, and the first ball bearing and the positioning ring are sleeved outside the free section;
wherein, damping spring is rolled up by square wire.
2. The spring friction braked damping pulley of claim 1, wherein the end face of the flange portion of the spindle against which the damping spring abuts has a first spiral face and a first positioning step for abutting against the end face of the damping spring wire.
3. The spring friction braked damping pulley of claim 2, wherein the end face of the damping brake frame against which the damping spring abuts is a second helical face and a second locating step for abutting against the other end face of the damping spring wire.
4. A spring friction braked damping pulley according to claim 3, wherein the damping brake frame is of a hollow convex ring structure and comprises a main body part and a convex part, the second spiral surface and the second positioning step are both positioned in the main body part, and the inner diameter of the convex part is in clearance fit with the outer diameter of the middle section of the shaft body part of the mandrel; the friction braking spring is sleeved outside the main body of the damping braking frame.
5. The spring friction brake damper pulley of claim 4, wherein the friction brake spring includes a coil and a bend, and the body portion of the damper brake bracket has a mounting groove that mates with the bend of the friction brake spring.
6. The spring friction brake damper pulley of claim 4, wherein the connecting frame is of a hollow collar structure and comprises a main body portion and a boss portion, the inner diameter of the main body portion is matched with the outer diameter of the boss portion of the damper brake frame, and the outer diameter of the main body portion is larger than the outer diameter of the main body portion of the damper brake frame and smaller than the outer diameter of the friction brake spring.
7. The spring friction brake damping pulley according to claim 6, wherein a third ball bearing is sleeved outside the protruding portion of the connecting frame, and two sides of the third ball bearing respectively abut against the first ball bearing and the main body portion of the connecting frame; the outer diameter of the third ball bearing is matched with the inner diameter of the belt hub.
8. The spring friction braked damping pulley of claim 7, wherein a first oil resistant washer is disposed between the third ball bearing and one end of the friction stop ring; and a second oil-proof gasket is arranged between the second ball bearing and the other end of the friction stop ring.
9. The spring friction braked damping pulley of any of claims 1-8, wherein the inner wall of the pulley hub has a limit groove which mates with a locating washer which fits into the limit groove; the positioning washer is in clearance fit with the flange part of the mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227072.4A CN109340349B (en) | 2018-10-22 | 2018-10-22 | Damping belt pulley for spring friction braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227072.4A CN109340349B (en) | 2018-10-22 | 2018-10-22 | Damping belt pulley for spring friction braking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109340349A CN109340349A (en) | 2019-02-15 |
| CN109340349B true CN109340349B (en) | 2024-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811227072.4A Active CN109340349B (en) | 2018-10-22 | 2018-10-22 | Damping belt pulley for spring friction braking |
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| Country | Link |
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| CN (1) | CN109340349B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363064A (en) * | 2013-07-15 | 2013-10-23 | 李志敏 | Spring friction brake one-way coupling damping belt wheel |
| CN203413096U (en) * | 2013-07-15 | 2014-01-29 | 李志敏 | One-way coupling damping belt pulley |
| CN203730701U (en) * | 2014-01-06 | 2014-07-23 | 李志敏 | Spring friction clutch belt pulley |
| CN204284373U (en) * | 2014-11-07 | 2015-04-22 | 李志敏 | A kind of unidirectional couplings damper pulley of spring friction catch |
| CN108087450A (en) * | 2017-12-25 | 2018-05-29 | 台州振鹏单向器有限公司 | A kind of damper pulley of roller type one way coupling |
| CN209228987U (en) * | 2018-10-22 | 2019-08-09 | 台州振鹏单向器有限公司 | The damper pulley of spring friction catch |
-
2018
- 2018-10-22 CN CN201811227072.4A patent/CN109340349B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363064A (en) * | 2013-07-15 | 2013-10-23 | 李志敏 | Spring friction brake one-way coupling damping belt wheel |
| CN203413096U (en) * | 2013-07-15 | 2014-01-29 | 李志敏 | One-way coupling damping belt pulley |
| CN203730701U (en) * | 2014-01-06 | 2014-07-23 | 李志敏 | Spring friction clutch belt pulley |
| CN204284373U (en) * | 2014-11-07 | 2015-04-22 | 李志敏 | A kind of unidirectional couplings damper pulley of spring friction catch |
| CN108087450A (en) * | 2017-12-25 | 2018-05-29 | 台州振鹏单向器有限公司 | A kind of damper pulley of roller type one way coupling |
| CN209228987U (en) * | 2018-10-22 | 2019-08-09 | 台州振鹏单向器有限公司 | The damper pulley of spring friction catch |
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| Publication number | Publication date |
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| CN109340349A (en) | 2019-02-15 |
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