CN212225902U

CN212225902U - Buffering belt wheel and buffering wheel train mechanism with same

Info

Publication number: CN212225902U
Application number: CN202021523332.5U
Authority: CN
Inventors: 葛锐; 朱文军; 胡志胜; 张军瑞; 李健; 辛雪军; 肖秋红; 范孝康
Original assignee: Anhui Cummins Power Co Ltd
Current assignee: Anhui Cummins Power Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-12-25
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses a buffer belt wheel and a buffer wheel train mechanism with the buffer belt wheel, which comprises a buffer wheel seat and a buffer wheel outer ring which are coaxially arranged inside and outside, two cylinders are arranged in an annular gap between the outer ring of the buffer wheel seat and the inner ring of the outer ring of the buffer wheel, the cylinder bodies of the two cylinders are respectively fixed with the outer ring of the buffer wheel, a piston is arranged in an arc-shaped cavity of the cylinder body of each cylinder in a sliding manner, an arc-shaped piston rod is arranged at one end of each piston, the end part of each arc-shaped piston rod extends outwards from the end part of the cylinder body of each cylinder and is positioned in the annular gap, the center line of the arc-shaped piston rod and the center line of the arc-shaped cavity are concentric with the buffer belt wheel, two convex lugs are arranged on two sides of the buffer wheel seat, the hinge joint of the arc-shaped piston rod and the lug is realized through the pin shaft on the lug, and a circumferential buffer spring is arranged in a gap between the outer end of the arc-shaped piston rod of each cylinder and the cylinder body of the other cylinder. The utility model has the advantages that: the transient impact force can be rapidly released and decomposed, and the buffering effect is remarkable.

Description

Buffering belt wheel and buffering wheel train mechanism with same

Technical Field

The utility model belongs to the technical field of drive mechanism technique and specifically relates to a buffering band pulley and have buffering wheel train mechanism of buffering band pulley that relate to.

Background

The existing transmission system usually uses a common belt pulley device, the belt pulley is also a common belt pulley, and a buffer mechanism is not arranged, so that the structure has the following defects:

1. by using the common belt pulley device, the transmission belt can receive great impact force when the driving wheel applies force in a transient state, the transmission belt can slip and generate abnormal sound, even can age and break, and great potential safety hazards exist.

2. The common belt pulley device is used, vibration cannot be eliminated, the vibration can affect the reliability of parts of a gear train, long-time vibration can cause the parts to lose efficacy, meanwhile, the damping capacity of a power system can be reduced, the vibration amplitude is increased, and the durability reliability can be reduced.

3. By using the common belt pulley device, the requirement on the alignment degree between the wheel trains is high, abnormal noise is more easily caused, abnormal abrasion of the belt is avoided, and the service life of the belt and an accessory bearing is greatly reduced.

4. With the conventional pulley device, the impact of the transient load on the accessory due to the impact force cannot be quickly eliminated, so that the service life of the accessory is obviously shortened, and the use cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a buffering band pulley and have buffering wheel train mechanism of buffering band pulley.

The utility model discloses a realize through following technical scheme:

a buffer belt wheel comprises a buffer wheel seat and a buffer wheel outer ring which are coaxially arranged inside and outside, an annular gap is formed between the buffer wheel seat outer ring and a buffer wheel outer ring inner ring, two cylinders are arranged in the annular gap and are in central symmetry distribution relative to the central point of the buffer belt wheel, the cylinder bodies of the two cylinders are respectively fixed with the buffer wheel outer ring, an arc-shaped cavity is arranged in each cylinder body of each cylinder, a piston is arranged in each arc-shaped cavity in a sliding mode, an arc-shaped piston rod is arranged at one end of each piston, the end part of each arc-shaped piston rod extends outwards from the end part of each cylinder body of each cylinder and is positioned in the annular gap, the central line of each arc-shaped piston rod and the central line of each arc-shaped cavity are concentric with the buffer belt wheel, two lugs are arranged on the two sides of the buffer wheel seat and are in, and the hinge joint of the arc-shaped piston rod and the lug is realized through the pin shaft on the lug, the axial leads of the two pin shafts are all parallel to the axial lead of the buffer belt wheel, a circumferential buffer spring is arranged in a gap between the outer end of the arc-shaped piston rod of each cylinder and the cylinder body of the other cylinder, and the two ends of the circumferential buffer spring are respectively limited through the end part of the arc-shaped piston rod and the cylinder body of the cylinder.

Furthermore, the lugs are respectively provided with a limit baffle at two ends corresponding to the pin shaft, the distance between the two limit baffles is greater than the diameter of the arc-shaped piston rod, the arc-shaped piston rod can slide along the pin shaft, the two sides corresponding to the arc-shaped piston rod are respectively sleeved with an axial buffer spring on the pin shaft, and two ends of the axial buffer spring are respectively limited through the arc-shaped piston rod and the limit baffles.

Further, the cylinder body lateral wall of cylinder has opened the pressure release pore keeping away from the one end that the arc piston rod stretches out, the pressure release pore is linked together with the arc cavity of cylinder, the pressure release pore is big-end-in-outer step hole, be provided with the relief valve in the macropore end in pressure release pore, the relief valve includes pressure release spring, pressure release valve block, pressure release valve gap, and the pressure release valve gap sets up outside the macropore end in pressure release pore, the pressure release valve block has been placed between pressure release valve gap and the pressure release spring, it has the pressure release hole to open on the relief valve gap, and pressure release spring compresses tightly the pressure release valve block on the relief valve gap for the pressure release hole on the pressure.

Further, the pressure relief valve cover is in threaded connection with the pressure relief hole.

Furthermore, buffering wheel seat includes wheel seat body, buffering ring, the collar extension of coaxial suit from inside to outside in proper order, it has a plurality of buffering holes that run through along the axial to open on the buffering ring, and two lugs set up on the collar extension of collar extension.

Furthermore, a convex elastic positioning pin is arranged on the end face of the buffer wheel seat.

Furthermore, the buffer wheel seat is provided with a mounting hole.

The utility model also provides a buffering train mechanism with buffering band pulley, buffering train mechanism includes a buffering band pulley and a plurality of driven pulleys, and a buffering band pulley and a plurality of driven pulleys are connected through a drive belt transmission be provided with tensioning ware between buffering band pulley and the adjacent driven pulleys, tensioning ware is used for tensioning the drive belt, its characterized in that: the buffer belt wheel is the buffer belt wheel.

Compared with the prior art, the utility model has the following advantages:

1. the utility model provides a buffering band pulley, through set up two curved cylinders in the annular gap between buffering wheel seat and buffering wheel outer loop, the cylinder body and the buffering wheel outer loop of cylinder are connected, the arc piston rod and the buffering wheel seat of cylinder are connected, curved cylinder and arc piston rod stroke and space are very big, use in buffering train mechanism, made things convenient for impact force transmission when transient state atress more, release that can be quick decomposes transient state impact force, the buffering effect is showing, make each spare part good reliability among the transmission system, spare part failure rate is low, transmission system stability is good.

2. The utility model provides a buffering band pulley, it all is equipped with circumference buffer spring in the clearance between the arc piston rod outer end of every cylinder and the cylinder body of another cylinder, and this circumference buffer spring can be fast eliminated with the impact force buffering when the arc piston rod is kick-backed fast, has realized the circumference shock attenuation of buffering band pulley, and has improved the life of arc piston rod.

3. The utility model provides a buffering band pulley, its round pin epaxial both sides that correspond the arc piston rod overlap respectively and are equipped with axial buffer spring, can carry out the elastic adjustment to the axial position between buffering wheel seat and the buffering wheel outer loop, the axial buffering of buffering band pulley has been realized, even this buffering band pulley does not align from driving wheel and drive belt with other, this buffering train also can normally work, compensated under the stress state because the alignment degree error that the spare part installation brought, the abnormal sound has been avoided cutting into, the life of drive belt and each spare part has been guaranteed.

4. The utility model provides a buffering band pulley, its buffering wheel seat are provided with the buffering ring, and when the horizontal vibrations of buffering band pulley were too big, this buffering ring can be powerful cushions.

5. The utility model provides a buffering band pulley is threaded connection between the cylinder body of pressure release valve gap and cylinder, and rotatory pressure release valve gap can be adjusted pressure release spring's pretightning force to adjust the pressure release valve block and open pressure.

Drawings

Fig. 1 is a perspective view of the buffer pulley of the present invention.

Fig. 2 is a plan view of the buffer pulley of the present invention.

Fig. 3 is a longitudinal section of the buffer pulley of the present invention cut away from the axial buffer spring.

Fig. 4 is a longitudinal sectional view of the buffer pulley of the present invention cut away from the relief valve.

Fig. 5 is an enlarged view of fig. 4 at a.

Fig. 6 is a cross-sectional view of the buffer pulley of the present invention.

Fig. 7 is a schematic structural diagram of the buffer gear train mechanism of the present invention.

Reference numbers in the figures: the buffer pulley comprises a buffer pulley body 1, a buffer pulley seat 2, a buffer pulley outer ring 3, a cylinder 4, an arc-shaped cavity 5, a piston 6, an arc-shaped piston rod 7, a pulley seat body 8, a buffer ring 9, a mounting ring 10, a buffer hole 11, a lug 12, a pin shaft 13, a circumferential buffer spring 14, a limit baffle 15, an axial buffer spring 16, a pressure relief hole 17, a pressure relief valve 18, a pressure relief spring 19, a pressure relief valve plate 20, a pressure relief valve cover 21, a pressure relief hole 22, a mounting hole 23, an elastic positioning pin 24, a driven pulley 25, a driving belt 26 and a tensioner 27.

Detailed Description

The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Referring to fig. 1 to 6, this embodiment discloses a buffer pulley, buffer wheel seat 2 and buffer wheel outer loop 3 including inside and outside coaxial setting, form annular gap between buffer wheel seat 2 outer lane and the 3 inner circles of buffer wheel outer loop, be equipped with two cylinders 4 in the annular gap, two cylinders 4 are central symmetric distribution for buffer pulley 1's central point, two cylinders 4's cylinder body is fixed with buffer wheel outer loop 3 respectively, the inside arc cavity 5 that is provided with of cylinder body of every cylinder 4, it is provided with piston 6 to slide in the arc cavity 5, piston 6 one end is provided with arc piston rod 7, arc piston rod 7 tip stretches out outwards and is located annular gap from cylinder 4's cylinder body tip, arc piston rod 7's central line, the central line of arc cavity 5 all is concentric with buffer pulley 1. The buffering wheel seat 2 comprises a wheel seat body 8, a buffering ring 9 and a mounting ring 10 which are coaxially sleeved from inside to outside in sequence, the buffering ring 9 is respectively assembled with the wheel seat body 8 and the mounting ring 10 in a tight fit mode, the wheel seat body 8 and the buffering ring 9 are arranged between the buffering ring 9 and the mounting ring 10, the anti-rotation design can be realized by a mode of key groove connection between the buffering ring 9 and the mounting ring 10 respectively, the buffering ring 9 can adopt a rubber buffering ring 9, a plurality of buffering holes 11 which penetrate through along the axial direction are formed in the buffering ring 9, two lugs 12 are arranged on two sides of the outer ring of the mounting ring 10, the two lugs 12 are distributed in a central symmetry mode relative to the central point of the buffering belt wheel 1, the outer ends of two arc piston rods 7 corresponding to the two cylinders 4 respectively penetrate through the two lugs 12, the hinging of the arc piston rods 7 and the lugs 12 is realized through pin shafts 13 on the lugs 12, the axial lines of the two pin shafts 13 are all parallel to the axial line of The two ends of the buffer spring 14 in the circumferential direction are respectively limited by the end part of the arc-shaped piston rod 7 and the cylinder body of the air cylinder 4.

Specifically, the lug 12 is equipped with limit baffle 15 respectively at the both ends that correspond round pin axle 13, and the distance between two limit baffle 15 is greater than the diameter of arc piston rod 7, and arc piston rod 7 can slide along round pin axle 13, and the cover is equipped with axial buffer spring 16 respectively in the both sides that correspond arc piston rod 7 on round pin axle 13, and axial buffer spring 16's both ends carry on spacingly through arc piston rod 7 and limit baffle 15 respectively.

Specifically, a pressure relief pore channel 17 is formed in one end, far away from the extending end of the arc-shaped piston rod 7, of the side wall of the cylinder body of the cylinder 4, the pressure relief pore channel 17 is communicated with the arc-shaped cavity 5 of the cylinder 4, the pressure relief pore channel 17 is a step hole with a large outer part and a small inner part, a pressure relief valve 18 is arranged in a large hole end of the pressure relief pore channel 17, the pressure relief valve 18 comprises a pressure relief spring 19, a pressure relief valve plate 20 and a pressure relief valve cover 21, the pressure relief valve cover 21 is arranged outside the large hole end of the pressure relief. The pressure relief valve plate 20 is placed between the pressure relief valve cover 21 and the pressure relief spring 19, the pressure relief valve cover 21 is provided with a pressure relief hole 22, and the pressure relief spring 19 presses the pressure relief valve plate 20 on the pressure relief valve cover 21, so that the pressure relief valve plate 20 seals the pressure relief hole 22 on the pressure relief valve cover 21. The pressure release valve 18 can be opened or closed according to the pressure difference between the air pressure in the arc-shaped cavity 5 of the air cylinder 4 and the external atmospheric pressure.

The buffer wheel seat 2 is provided with a mounting hole 23, and is connected to other components through the mounting hole 23. The end face of the buffer wheel seat 2 is provided with a convex elastic positioning pin 24, so that the mounting and positioning precision of the buffer wheel and other parts during mounting is improved, and the assembly efficiency can be improved.

When the buffer belt wheel 1 is subjected to the impact force of instantaneous and high load along the circumferential direction, the buffer wheel seat 2 and the buffer wheel outer ring 3 tend to rotate relatively, the arc piston rod 7 of the air cylinder 4 stretches out and draws back rapidly, the arc piston rod 7 slides back and forth along the arc cavity 5, the impact force is buffered and eliminated by the two circumferential buffer springs 14 in the process, the impact on the arc piston rod 7 is reduced, and the service life of the arc piston rod 7 is prolonged. After the impact force is relieved, under the action of the two circumferential buffer springs 14, the rods of the pistons 6 of the two cylinders 4 are restored to the original positions, and then the buffer wheel seat 2 and the buffer wheel outer ring 3 are restored.

When the buffer pulley 1 is subjected to the impact force of instantaneous and high load along the axial direction, the arc-shaped piston rod 7 of the air cylinder 4 slides on the pin shaft 13, and in the process, the two axial buffer springs 16 buffer and eliminate the impact force. After the impact force is relieved, the arc-shaped piston rod 7 is reset under the action of the two axial buffer springs 16, and then the buffer wheel seat 2 and the buffer wheel outer ring 3 are reset.

Referring to fig. 7, the embodiment further discloses a buffer gear train mechanism with buffer pulleys, the buffer gear train mechanism comprises a buffer pulley 1 and a plurality of driven pulleys 25, the buffer pulley 1 and the driven pulleys 25 are in transmission connection through a transmission belt 26, a tensioner 27 is arranged between the buffer pulley 1 and the adjacent driven pulley 25, the tensioner 27 is used for tensioning the transmission belt 26, and the buffer pulley 1 is the buffer pulley 1 with the structure.

When the buffering wheel train mechanism is applied to a transmission system, the buffering wheel seat 2 of the buffering wheel pulley 1 is installed together with a driving wheel of the transmission system, the driven wheel pulley 25 is installed together with a working part, and the power of the driving wheel is transmitted to the working part through the buffering wheel train mechanism. Buffering band pulley 1 in this buffering gear train mechanism can realize circumference buffering and axial buffering, can solve buffering gear train mechanism in the transient state, the atress buffering in the high load, avoided drive belt 26 and each spare part to damage because of the atress is too big the unusual damage that leads to, angle vibrations and inertial force that appear in this buffering band pulley 1 can solve and eliminate the train, and the train alignment degree requires too high and increases the matching degree of difficulty of train, spare part machining precision requires too high scheduling problem, and simultaneously, the response speed of whole train also can promote fast.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A buffer pulley, characterized in that: the damping wheel comprises a damping wheel seat (2) and a damping wheel outer ring (3) which are coaxially arranged inside and outside, an annular gap is formed between the outer ring of the damping wheel seat (2) and the inner ring of the damping wheel outer ring (3), two cylinders (4) are arranged in the annular gap, the two cylinders (4) are distributed in a central symmetry way relative to the central point of the damping wheel (1), the cylinder bodies of the two cylinders (4) are respectively fixed with the damping wheel outer ring (3), an arc-shaped cavity (5) is arranged inside the cylinder body of each cylinder (4), a piston (6) is arranged in the arc-shaped cavity (5) in a sliding way, one end of the piston (6) is provided with an arc-shaped piston rod (7), the end part of the arc-shaped piston rod (7) extends outwards from the end part of the cylinder body of the cylinder (4) and is positioned in the annular gap, the central line of the arc-shaped, two lugs (12) are arranged on two sides of the buffer wheel seat (2), the two lugs (12) are distributed in a central symmetry mode relative to the central point of the buffer belt wheel (1), the outer ends of two arc-shaped piston rods (7) corresponding to the two cylinders (4) respectively penetrate through the two lugs (12), the arc-shaped piston rods (7) are hinged to the lugs (12) through pin shafts (13) on the lugs (12), the axial lines of the two pin shafts (13) are parallel to the axial line of the buffer belt wheel (1), a circumferential buffer spring (14) is arranged in a gap between the outer end of each arc-shaped piston rod (7) of each cylinder (4) and the cylinder body of the other cylinder (4), and the two ends of the circumferential buffer spring (14) are limited through the end portions of the arc-shaped piston rods (7) and the cylinder bodies of the cylinders (.

2. A buffer pulley as claimed in claim 1, wherein: the lug (12) is equipped with limit baffle (15) respectively at the both ends that correspond round pin axle (13), and the distance between two limit baffle (15) is greater than the diameter of arc piston rod (7), and arc piston rod (7) can slide along round pin axle (13), it is equipped with axial buffer spring (16) respectively to overlap in the both sides that correspond arc piston rod (7) on round pin axle (13), and the both ends of axial buffer spring (16) are spacing through arc piston rod (7) and limit baffle (15) respectively.

3. A buffer pulley as claimed in claim 1, wherein: the side wall of the cylinder body of the cylinder (4) is provided with a pressure relief duct (17) at one end extending away from the arc-shaped piston rod (7), the pressure relief pore canal (17) is communicated with the arc-shaped cavity (5) of the cylinder (4), the pressure relief pore canal (17) is a step hole with a large outer part and a small inner part, a pressure relief valve (18) is arranged in the large hole end of the pressure relief pore canal (17), the pressure relief valve (18) comprises a pressure relief spring (19), a pressure relief valve plate (20) and a pressure relief valve cover (21), the pressure relief valve cover (21) is arranged outside the large hole end of the pressure relief pore channel (17), a pressure relief valve plate (20) is arranged between the pressure relief valve cover (21) and the pressure relief spring (19), the pressure relief valve cover (21) is provided with a pressure relief hole (22), a pressure relief spring (19) presses the pressure relief valve plate (20) on the pressure relief valve cover (21), so that the pressure relief valve plate (20) seals the pressure relief hole (22) on the pressure relief valve cover (21).

4. A buffer pulley according to claim 3, wherein: the pressure relief valve cover (21) is in threaded connection with the pressure relief pore passage (17).

5. A buffer pulley as claimed in claim 1, wherein: buffering wheel seat (2) are including wheel seat body (8), buffering ring (9), the collar extension (10) of coaxial suit from inside to outside in proper order, buffering ring (9) are gone up to open has a plurality of buffering holes (11) that run through along the axial, and two lugs (12) set up and circle on collar extension (10).

6. A buffer pulley as claimed in claim 1, wherein: and the end surface of the buffer wheel seat (2) is provided with a convex elastic positioning pin (24).

7. A buffer pulley as claimed in claim 1, wherein: the buffer wheel seat (2) is provided with a mounting hole (23).

8. A buffer gear train mechanism with buffer pulleys, the buffer gear train mechanism comprises a buffer pulley (1) and a plurality of driven pulleys (25), the buffer pulley (1) and the driven pulleys (25) are in transmission connection through a transmission belt (26), a tensioner (27) is arranged between the buffer pulley (1) and the adjacent driven pulley (25), the tensioner (27) is used for tensioning the transmission belt (26), and the buffer gear train mechanism is characterized in that: the buffer pulley (1) is a buffer pulley according to any one of claims 1 to 7.