CN211079835U

CN211079835U - Vibration structure with adjustable excitation direction

Info

Publication number: CN211079835U
Application number: CN201921386120.4U
Authority: CN
Inventors: 黄方权
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-07-24
Anticipated expiration: 2029-08-23

Abstract

The utility model relates to a road roller equipment field specifically is a vibration structure of excitation direction adjustable is related to. Including vibration main part and arrange the excitation section of thick bamboo in vibration main part, the section of thick bamboo chamber of excitation section of thick bamboo is provided with eccentric shaft and eccentric block group on the eccentric shaft along the axial, the eccentric shaft is connected with outside driving source for drive eccentric shaft and eccentric block group rotate, this vibrating structure still includes angle adjustment portion, be used for adjusting its inside eccentric shaft and the angle of vertical direction through rotating the excitation section of thick bamboo, with the excitation force of adjusting eccentric block group on the eccentric shaft and the angle of vertical direction and adjust the amplitude of excitation force in vertical direction. The amplitude can be adjusted according to the compaction working condition, and the actual use requirement is met.

Description

Vibration structure with adjustable excitation direction

Technical Field

The utility model relates to a road roller equipment field specifically is a vibration structure of excitation direction adjustable is related to.

Background

The vibratory roller is a machine for compacting various building and road building materials by utilizing self gravity and vibration; vibratory rollers are widely used in road construction for optimum compaction of various non-cementitious soils, macadam mixes, and various asphalt concretes. The main structure of the existing vibratory roller generally comprises a vibration main body and an excitation cylinder positioned in a cylinder cavity of the vibration main body; an eccentric shaft is arranged in the cavity of the excitation cylinder, eccentric block groups are arranged on the eccentric shaft, and finally the eccentric block groups are driven by a gear to rotate forwards and backwards to realize the excitation effect of the excitation cylinder.

In original structure, the exciting force that is located inside the excitation section of thick bamboo and sets up the eccentric block group production on the eccentric shaft and the angle of vertical direction is unchangeable, causes the exciting force at the amplitude of vertical direction unchangeable, and the amplitude of being perpendicular to promptly by the compaction object is unchangeable, has not satisfied and has adjusted the vibration excitation direction according to the compaction operating mode with this regulation amplitude.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an excitation direction adjustable vibration structure can adjust the amplitude according to the compaction operating mode, satisfies actual user demand.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a vibration structure with adjustable vibration excitation directions comprises a vibration main body and a vibration excitation barrel arranged in the vibration main body, wherein a barrel cavity of the vibration excitation barrel is axially provided with an eccentric shaft and an eccentric block group arranged on the eccentric shaft, the eccentric shaft is connected with an external driving source and used for driving the eccentric shaft and the eccentric block group to rotate, and the vibration structure further comprises an angle adjusting part which is used for adjusting the angle between the eccentric shaft inside the vibration excitation barrel and the vertical direction by rotating the vibration excitation barrel so as to adjust the angle between the vibration excitation force of the eccentric block group on the eccentric shaft and the vertical direction and adjust the amplitude of the vibration excitation force in the vertical direction;

the angle adjusting part comprises a driving unit and a transmission unit arranged between the driving unit and the excitation cylinder, and the driving unit and the transmission unit are matched with each other to rotate the excitation cylinder.

Further, the driving unit is an angle adjusting motor, the transmission unit comprises a driving adjusting gear arranged on a main shaft of the angle adjusting motor and a driven adjusting gear arranged on the excitation cylinder, and the driving adjusting gear and the driven adjusting gear are meshed with each other.

Preferably, the angle adjusting unit further includes an angle detecting sensor and a control unit, the angle detecting sensor is configured to detect a rotation angle of the exciting cylinder, the angle detecting sensor transmits a detected angle signal to the control unit, and the control unit sends an instruction to the angle adjusting motor according to the angle signal.

Further preferably, the excitation cylinder penetrates inside both the left cylinder support bearing and the right cylinder support bearing.

Further, the eccentric shaft comprises a driving eccentric shaft arranged along the axial direction of the excitation cylinder cavity, and a first driven eccentric shaft and a second driven eccentric shaft which are symmetrically arranged at two sides of the driving eccentric shaft, the first driven eccentric shaft and the second driven eccentric shaft all penetrate through opposite eccentric shaft bearings, a driving gear is arranged on the driving eccentric shaft, a first driven gear is arranged on the first driven eccentric shaft, a second driven gear is arranged on the second driven eccentric shaft, the driving gear is meshed with the first driven gear, and the driving gear is meshed with the second driven gear;

the eccentric block group comprises a first eccentric block arranged on the driving eccentric shaft, a second eccentric block arranged on the first driven eccentric shaft and a third eccentric block arranged on the second driven eccentric shaft.

Further preferably, the sum of the eccentric moments of the first driven eccentric shaft and the second driven eccentric shaft is equal to the eccentric moment of the driving eccentric shaft.

Furthermore, the vibration main body is provided with a lubricating oil lifting bucket outside the excitation cylinder, the outer wall of the excitation cylinder is provided with a lubricating oil inlet hole communicated with the lubricating oil lifting bucket and the cavity of the excitation cylinder, the lubricating oil inlet hole penetrates through the cylinder wall of the excitation cylinder and is communicated to three groups of gears and/or eccentric shaft bearings along the radial direction of the excitation cylinder, and the three groups of gears are driving gears, first driven gears and second driven gears.

Further preferably, the lubricating oil inlet hole is annularly formed in the outer wall of the vibration exciting cylinder.

Furthermore, the vibration structure also comprises vibration damping units which are arranged on two sides of the outer part of the excitation cylinder along the axial direction of the excitation cylinder.

Further, the external driving source is a vibration motor connected to one end of the driving eccentric shaft, and the vibration motor is used for rotating the driving eccentric shaft and driving a first driven eccentric shaft and a second driven eccentric shaft which form gear transmission with the driving eccentric shaft to rotate in a direction opposite to the rotating direction of the driving eccentric shaft and rotate the eccentric block set;

further preferably, the vibration main body is provided with a first bearing seat at positions where the vibration motor and the angle adjusting motor are located, the vibration motor and the angle adjusting motor are both arranged on the first bearing seat, and the first bearing seat is connected with the vibration damping unit.

The utility model has the advantages as follows:

(1) the utility model discloses set up angle adjustment portion in the outside of a vibration exciting section of thick bamboo, through rotating the vibration exciting section of thick bamboo, with the position in vertical direction eccentric block group adjustment for the vertical direction of eccentric block group skew, change the angle of exciting force and vertical direction promptly for exciting force and the amplitude that the eccentric block group produced only partly act on in vertical direction, only partly act on by the compacted object promptly. According to the needs of the compaction working condition, the vibration exciting barrel is rotated to adjust the vibration amplitude in the vertical direction, and the vibration amplitude acting on the compacted object is adjusted in turn.

(2) The both ends of a cylinder that shakes all run through in the bearing, and a face bearing can support a cylinder that shakes, and on the other hand can reduce the resistance when passing through the angle modulation motor and rotating a cylinder that shakes to this exciting force and the angle of vertical direction that conveniently adjusts the eccentric block group and produce, conveniently adjusts the amplitude in vertical direction in view of the above, adjusts the amplitude of perpendicular to by the compaction object promptly.

(3) The rotating angle of the exciting cylinder is obtained through the angle detection sensor, the exciting force generated by the eccentric block group and the angle of the eccentric block group in the vertical direction are obtained, and when the set angle is reached, the angle adjusting motor is braked through the control unit, and the purpose of automatically controlling the angle adjusting can be achieved.

(4) The angle adjusting motor and the excitation cylinder are in gear transmission, gears are meshed with each other, when the angle adjusting motor and the excitation cylinder are adjusted to a required angle, the excitation cylinder can be fixed by the gears, the fixed excitation cylinder is prevented from rotating under the action of inertia, and accuracy is improved.

(5) The lubricating oil in the lubricating oil bucket reaches the gears and the bearings in the exciting cylinder through the oil inlet hole, so that all the gears and the bearings can be fully lubricated, the aim of quickly and efficiently dissipating heat generated by all parts in the exciting cylinder is synchronously fulfilled, the lubricating and heat dissipating efficiency is high, and the working process is extremely reliable and stable.

(6) Through gear drive between initiative eccentric shaft and the driven eccentric shaft for three eccentric shaft synchronous rotation, and driven eccentric shaft rotation direction is opposite with initiative eccentric shaft rotation direction, and overall structure arranges rationally and practical, and work efficiency is high.

Drawings

FIG. 1 is a cross-sectional structural view of the present invention;

fig. 2a, 2b and 2c are cross-sectional views of the eccentric block of the present invention taken along the radial direction;

fig. 3a, 3b, 3c are the lubricating oil inlet holes along the driving eccentric shaft and the driven eccentric shaft of the present invention. A cross-sectional view is taken.

The notations in the figures have the following meanings:

10-vibrating body 11-first bearing seat 12-walking support bearing 13-second bearing seat

14 a-first lube oil bucket 14 b-second lube oil bucket 15-angle detection sensor

20-driving mechanism 30-damping unit 40-excitation cylinder 41 a-left cylinder support bearing

41 b-right cylinder support bearing 42-driven adjusting gear

430-driving eccentric shaft 431-driving gear 432-first eccentric block 440-first driven eccentric shaft

441-first driven gear 442-second eccentric mass 450-second driven eccentric shaft

451-second driven gear 452-third eccentric mass 46-eccentric shaft bearing 47-third bearing seat

48-fourth bearing seat 49-lubricating oil inlet hole

50-vibration motor 60-angle adjustment motor 61-active adjustment gear

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the following embodiments and the accompanying drawings. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The specific structure of the present invention can refer to fig. 1, including the suspended driving mechanism 20, the walking support bearing 12 cooperating with the driving mechanism 20 is used for making the whole vibrating structure walk, the vibrating main body 10 and arrange the excitation cylinder 40 in the vibrating main body 10, wherein the walking support bearing 12 is placed on the second bearing seat 13, the excitation cylinder 40 is an excitation cylinder, and the vibrating main body 10 is provided with the vibrating motor 50 on one side of the excitation cylinder 40. The cylinder cavity of the excitation cylinder 40 is provided with an eccentric shaft along the axial direction and an eccentric block set is arranged on the eccentric shaft. The eccentric shafts include a driving eccentric shaft 430 disposed at the center line of the vibration exciting cylinder 40, and first and second driven

eccentric shafts

440 and 450 symmetrically disposed at both sides of the driving eccentric shaft 430. The eccentric block set includes a first eccentric block 432 provided on the driving eccentric shaft 430, a second eccentric block 442 provided on the first driven eccentric shaft 440, and a third eccentric block 452 provided on the second driven eccentric shaft 450. The driving eccentric shaft 430 is provided with a driving gear 431, the first driven eccentric shaft 440 is provided with a first driven gear 441, the second driven eccentric shaft 450 is provided with a second driven gear 451, the driving gear 431 and the first driven gear 441 are engaged with each other, and the driving gear 431 and the second driven gear 451 are engaged with each other. Both ends of the three eccentric shafts are penetrated in eccentric shaft bearings 46, wherein the eccentric shaft bearing 46 at one end is placed on a third bearing seat 47, and the eccentric shaft bearing 46 at the other end is placed on a fourth bearing seat 48. Three sets of gears are disposed inside the eccentric shaft bearings 46 and adjacent to one set of the eccentric shaft bearings 46.

The vibration motor 50 is disposed outside the vibration exciting cylinder 40, the vibration motor 50 drives the driving eccentric shaft 430 to rotate, the first driven eccentric shaft 440 and the second driven eccentric shaft 450 rotate opposite to the driving eccentric shaft 430, the gravity centers of the eccentric block groups on the eccentric shafts rotate to generate an exciting force, and the vibration exciting cylinder 40 drives the vibration main body 10 to vibrate. Since the vibration damping units 30 are provided on both sides of the vibration drum 40 in the horizontal direction, the vibration generated by the vibration motor 50 can be damped.

Example 2

In addition to embodiment 1, an angle adjusting portion is added so that the excitation direction of the vibration structure can be adjusted, and the structure after adding the angle adjusting portion is shown in fig. 1.

In order to ensure that the angle between the eccentric shaft inside the vibration exciting cylinder 40 and the vertical direction can be adjusted by adjusting the angle of the vibration exciting cylinder, and further, the angle between the vibration exciting force of the eccentric block group on the eccentric shaft and the vertical direction can be adjusted, so that the amplitude of the vibration exciting force in the vertical direction can be adjusted. As shown in fig. 1, both ends of the vibration cylinder 40 penetrate through the inside of both the left cylinder support bearing 41a and the right cylinder support bearing 41b, and friction generated by rotation can be reduced. The added angle adjusting part comprises an angle adjusting motor 60, an angle detecting sensor 15 and a control unit, a driving adjusting gear 61 arranged on a main shaft of the angle adjusting motor 60 and a driven adjusting gear 42 arranged on the exciting cylinder 40, and the driving adjusting gear 61 and the driven adjusting gear 42 are meshed with each other.

The working principle is as follows: as shown in fig. 3a, when the driving eccentric shaft 430, the first driven eccentric shaft 440 and the second driven eccentric shaft 450 are all located in the vertical direction, the excitation forces of the three sets of eccentric shafts are all as shown in fig. 2a, and the direction of the excitation forces is the vertical direction, i.e. the direction of the excitation forces is perpendicular to the object to be compacted. When the angle adjusting motor 60 rotates the vibration cylinder 40 through the driving adjusting gear 61 and the driven adjusting gear 42, the direction of the exciting force generated by the eccentric block set inside the vibration cylinder 40 changes as shown in fig. 2 b.

Because the exciting force F is mew²A component force in the vertical direction of F_v＝mew²cos θ, amplitude in vertical direction

Wherein m is the total mass of each eccentric block, e is the total eccentric moment of each eccentric block, w is the angular velocity of the eccentric block rotation, theta is the included angle between the exciting force F and the vertical direction, F is the vibration frequency, and Q is the vibration mass of the vibration main body 10.

Component F of the vertical direction_vIs a cosine function of F, and it is obvious that the vertical component force is larger when the angle theta is largerAnd smaller, i.e. smaller and smaller amplitudes in the vertical direction. When the road roller is used for compacting the paving layer, the component force vertical to the paving layer is effective compacting acting force, namely the amplitude in the vertical direction is the key of amplitude modulation.

When the three sets of eccentric shafts reach the position shown in FIG. 3c, the resulting excitation force of the eccentric masses is as shown in FIG. 2c, with the excitation force direction being horizontal and no amplitude in the direction perpendicular to the mat.

According to the above analysis, the utility model discloses can realize that exciting force direction changes from vertical direction to the arbitrary direction of horizontal direction, amplitude value is from minimum to biggest arbitrary regulation. When the compactness of the pressed layer is pressed to be qualified, the exciting force direction is the horizontal direction by rotating the exciting cylinder 40, and the pressed layer is subjected to light receiving treatment.

Example 3

On the basis of embodiments 1 and 2, in order to reduce the friction force generated by each bearing and gear, the vibration structure is further provided with a first lubricant bucket 14a and a second lubricant bucket 14b, as shown in fig. 3a, 3b and 3c, two sets of lubricant inlet holes 49 communicating the first lubricant bucket 14a with the cavity of the vibration cylinder 40 are opened on the outer wall of the vibration cylinder 40, one set of lubricant inlet holes 49 communicates the first lubricant bucket 14a with the cavity of the vibration cylinder 40 and extends to the gear and bearing located on the left side inside the vibration cylinder 40, and the other set of lubricant inlet holes 49 communicates the second lubricant bucket 14b with the cavity of the vibration cylinder 40 and extends to the bearing located on the right side inside the vibration cylinder 40. The lubricating oil inlet holes 49 are uniformly distributed on the outer wall of the excitation cylinder 40 in a ring shape. All gears and bearings can be fully lubricated, the purpose of quickly and efficiently radiating heat generated by all parts in the excitation cylinder 40 is synchronously achieved, the lubricating and radiating efficiency is high, and the working process is extremely reliable and stable.

Claims

1. The utility model provides a vibration structure of excitation direction adjustable, includes vibration main part (10) and arranges a vibration section of thick bamboo (40) in vibration main part (10), the section of thick bamboo chamber of a vibration section of thick bamboo (40) is provided with eccentric shaft and is provided with eccentric block group on the eccentric shaft along the axial, eccentric shaft connection has outside driving source for drive eccentric shaft and eccentric block group rotate, its characterized in that: the vibration structure also comprises an angle adjusting part which is used for adjusting the angle between an eccentric shaft inside the vibration structure and the vertical direction by rotating the vibration exciting cylinder (40) so as to adjust the angle between the exciting force of an eccentric block group on the eccentric shaft and the vertical direction and adjust the amplitude of the exciting force in the vertical direction;

the angle adjusting part comprises a driving unit and a transmission unit arranged between the driving unit and the excitation cylinder (40), and the driving unit and the transmission unit are matched with each other to rotate the excitation cylinder (40).

2. The vibrating structure of claim 1, wherein: the driving unit is an angle adjusting motor (60), the transmission unit comprises a driving adjusting gear (61) arranged on a main shaft of the angle adjusting motor (60) and a driven adjusting gear (42) arranged on the vibration exciting barrel (40), and the driving adjusting gear (61) and the driven adjusting gear (42) are meshed with each other.

3. The vibrating structure of claim 2, wherein: the angle adjusting part further comprises an angle detecting sensor (15) and a control unit, the angle detecting sensor (15) is used for detecting the rotating angle of the exciting cylinder (40), the angle detecting sensor (15) transmits a detected angle signal to the control unit, and the control unit sends an instruction to the angle adjusting motor (60) according to the angle signal.

4. The vibrating structure of claim 3, wherein: the excitation cylinder (40) penetrates through the insides of both the left cylinder support bearing (41a) and the right cylinder support bearing (41 b).

5. The vibrating structure of claim 1 or 2 or 3 or 4, wherein: the eccentric shaft comprises a driving eccentric shaft (430) arranged along the axial direction of a cylinder cavity of the excitation cylinder (40) and a first driven eccentric shaft (440) and a second driven eccentric shaft (450) symmetrically arranged at two sides of the driving eccentric shaft (430), the first driven eccentric shaft (440) and the second driven eccentric shaft (450) all penetrate through opposite eccentric shaft bearings (46), a driving gear (431) is arranged on the driving eccentric shaft (430), a first driven gear (441) is arranged on the first driven eccentric shaft (440), a second driven gear (451) is arranged on the second driven eccentric shaft (450), the driving gear (431) is meshed with the first driven gear (441), and the driving gear (431) is meshed with the second driven gear (451);

the eccentric block group comprises a first eccentric block (432) arranged on the driving eccentric shaft (430), a second eccentric block (442) arranged on the first driven eccentric shaft (440), and a third eccentric block (452) arranged on the second driven eccentric shaft (450).

6. The vibrating structure of claim 5, wherein: the sum of the eccentric moments of the first driven eccentric shaft (440) and the second driven eccentric shaft (450) is equal to the eccentric moment of the driving eccentric shaft (430).

7. The vibrating structure of claim 5, wherein: the vibration main body (10) is provided with a lubricating oil lifting bucket on the outer side of the excitation cylinder (40), a lubricating oil inlet hole (49) communicated with the lubricating oil lifting bucket and a cylinder cavity of the excitation cylinder (40) is formed in the outer wall of the excitation cylinder (40), the lubricating oil inlet hole (49) penetrates through the cylinder wall of the excitation cylinder (40) and is communicated to three groups of gears and/or an eccentric shaft bearing (46) along the radial direction of the excitation cylinder (40), and the three groups of gears are a driving gear (431), a first driven gear (441) and a second driven gear (451).

8. The vibrating structure of claim 7, wherein: and the lubricating oil inlet hole (49) is annularly arranged on the outer wall of the vibration exciting cylinder (40).

9. The vibrating structure of claim 1 or 2 or 3 or 4, wherein: the vibration structure further comprises vibration damping units (30) which are arranged on two sides along the outer portion of the vibration cylinder (40) along the axial direction of the vibration cylinder (40).

10. The vibrating structure of claim 9, wherein: the external driving source is a vibration motor (50) connected to one end of the driving eccentric shaft (430), the vibration motor (50) is used for rotating the driving eccentric shaft (430) and driving a first driven eccentric shaft (440) and a second driven eccentric shaft (450) which form gear transmission with the driving eccentric shaft (430) to rotate in the direction opposite to the rotating direction of the driving eccentric shaft (430) and rotate an eccentric block set;

the vibration main body (10) is provided with a first bearing seat (11) at the positions where the vibration motor (50) and the angle adjusting motor (60) are located, the vibration motor (50) and the angle adjusting motor (60) are both arranged on the first bearing seat (11), and the first bearing seat (11) is connected with the vibration damping unit (30).