CN112575663A - Exciting beam for resonance crusher - Google Patents
Exciting beam for resonance crusher Download PDFInfo
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- CN112575663A CN112575663A CN202011425058.2A CN202011425058A CN112575663A CN 112575663 A CN112575663 A CN 112575663A CN 202011425058 A CN202011425058 A CN 202011425058A CN 112575663 A CN112575663 A CN 112575663A
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- excitation beam
- vibration
- counterweight
- axis
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/12—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
- E01C23/122—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
- E01C23/124—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus moved rectilinearly, e.g. road-breaker apparatus with reciprocating tools, with drop-hammers
Abstract
The invention provides an excitation beam for a resonance crusher, wherein a supporting shaft for supporting is arranged on the excitation beam, a hammer head is fixedly arranged at one end of the excitation beam, and a vibration exciter is arranged at the other end of the excitation beam; the length ratio of a first vibration side close to the hammer head to a second vibration side close to the vibration exciter is 6.8-7 by taking the axis of the supporting shaft as a boundary, so that the natural frequency of the vibration exciting beam is 50-55.2 Hz; the first vibration side is the distance from the end of the excitation beam close to the hammer head to the axis of the supporting shaft; the second vibration side is the distance from the axis of the supporting shaft to the axis of the vibration exciter. By adopting the scheme, the natural frequency of the excitation beam is kept away from the natural frequency of the cement pavement, so that the continuous working time is reliably prolonged when the excitation beam works in the natural frequency range of the cement pavement.
Description
Technical Field
The invention relates to the field of cement pavement crushing equipment, in particular to an excitation beam for a resonance crusher.
Background
The cement road surface crushing construction is a construction method which crushes the existing cement road surface into particles with large bottom particle size and small top particle size, and has better average bearing capacity and more uniform deformation after rolling and paving asphalt concrete, thereby prolonging the service life of the road surface. Resonance is the phenomenon that when the frequency of excitation on a system is close to a certain order natural frequency of the system, the amplitude of the system is obviously increased. The principle is utilized immediately for crushing the road surface by the resonance crushing vehicle, the vibration of the resonance crushing vehicle drives the eccentric block to rotate to generate a certain eccentric force, so that the excitation beam is periodically deformed, and then the hammer head is driven to vibrate, therefore, the vibration frequency of the resonance crushing vehicle is adjusted to actually adjust the rotating speed of the excitation motor, so that the vibration frequency of the hammer head is close to the natural frequency of the ground, and the cement road surface is crushed. At present, the natural frequency of a cement pavement is 41-50 Hz, as shown in figures 7 and 8. The vibration can form resonance with the cement pavement within the frequency range to achieve the effect of pavement breaking. Chinese patent document CN110593070A vibration beam and cement road surface breaking vehicle using the same, CN110653566A method for manufacturing vibration beam for road surface breaking vehicle, CN211368326U curved surface vibration beam and cement road surface breaking vehicle using the same, CN211446538U surface metal-infiltrated vibration beam and cement road surface breaking vehicle using the same, CN211446539U smooth surface vibration beam and cement road surface breaking vehicle using the same, CN109371794A vibration beam for road surface breaking vehicle, and CN209162610U vibration beam for road surface breaking vehicle. Measures are taken to increase the service life of the excitation beam. However, the duration of use is still limited because the natural frequency of the vibration beam cannot avoid the natural frequency of the cement pavement. At present, no better solution is found.
Disclosure of Invention
The invention aims to provide an excitation beam for a resonance crusher, which can enable the natural frequency of the excitation beam to avoid the natural frequency of a cement road surface, thereby prolonging the service life.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an excitation beam for a resonance crusher is provided with a supporting shaft for supporting, one end of the excitation beam is fixedly provided with a hammer head, and the other end of the excitation beam is provided with a vibration exciter; the length ratio of a first vibration side close to the hammer head to a second vibration side close to the vibration exciter is 6.8-7 by taking the axis of the supporting shaft as a boundary, so that the natural frequency of the vibration exciting beam is 50-55.2 Hz;
the first vibration side is the distance from the end of the excitation beam close to the hammer head to the axis of the supporting shaft;
the second vibration side is the distance from the axis of the supporting shaft to the axis of the vibration exciter.
In a preferred embodiment, the length ratio of the first vibration side to the second vibration side is 6.9263.
In the preferred scheme, a counterweight shaft is also arranged between the hammer head of the excitation beam and the supporting shaft;
the length ratio of the hammer head balance weight section to the balance weight supporting section is 0.30-0.32.
The hammer head counterweight section is the distance from the end of the excitation beam close to the hammer head to the axis of the counterweight shaft;
the counterweight supporting section is the distance from the axis of the counterweight shaft to the axis of the supporting shaft.
In the preferred scheme, the length of the hammer head counterweight segment is 780 mm; the length of the counterweight supporting section is 2510 mm.
In a preferred scheme, the length of the first vibration side is 3290 mm;
the length of the second vibrating side is 475 mm.
In a preferred scheme, the ratio of the length to the width of the excitation beam is 5.95-6.
In a preferred scheme, the ratio of the length, the width and the thickness of the excitation beam is 71-72: 12: 3.
in the preferred scheme, the length of the excitation beam is 3940 mm; the width is 660 mm; the thickness was 165 mm.
In a preferable scheme, a supporting shaft hole is arranged at the position of the supporting shaft on the excitation beam, and a second bulge is arranged on the periphery of the supporting shaft hole;
a counterweight shaft hole is formed in the position of the counterweight shaft on the excitation beam, and a first bulge is arranged on the periphery of the counterweight shaft hole;
the height of the second protrusion and the first protrusion is 10 mm.
In the preferred scheme, the intersection positions of all the surfaces of the excitation beam are provided with arc transitions, the surface of the excitation beam is provided with a polishing layer, and a zinc spraying layer is arranged outside the polishing layer.
According to the excitation beam for the resonance crusher, by adopting the scheme, the natural frequency of the excitation beam reaches 50-55.2 Hz, the natural frequency of a cement road surface is avoided, and the continuous working time is reliably prolonged when the excitation beam works in the natural frequency range of the cement road surface.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic front view of a resonance crusher using the present invention.
Fig. 3 is a schematic bottom view of a resonance crusher according to the present invention.
Fig. 4 is a schematic view of the assembly structure of the present invention.
Fig. 5 is a front view of the present invention.
Fig. 6 is a natural frequency detection curve of the excitation beam in the present invention.
Fig. 7 is a natural frequency detection curve of a cement road surface.
FIG. 8 is a natural frequency detection curve of another cement pavement.
In the figure: the vibration exciter comprises a vibration exciting beam 1, a counterweight shaft hole 101, a hammer head mounting hole 102, a first bulge 103, a vibration exciting seat 104, a length 105, a thickness 106, a width 107, a hammer head 108, a first vibration side 109, a second vibration side 110, a hammer head counterweight section 111, a counterweight supporting section 112, a supporting shaft hole 113, a second bulge 114, a vibration exciter 2, a vehicle body 3, a lifting hydraulic cylinder 4, a frequency acquisition device 5, a counterweight shaft 6, a supporting shaft 7, a vibration exciting motor 8, a flexible supporting shaft sleeve 9, a counterweight 10, a display screen 11, a counterweight beam 12 and a counterweight rod 13.
Detailed Description
Example 1:
as shown in fig. 1 and 5, an excitation beam for a resonance crusher is provided with a supporting shaft 7 for supporting on an excitation beam 1, a hammer 108 is fixedly arranged at one end of the excitation beam 1, and an exciter 2 is arranged at the other end of the excitation beam 1; the length ratio of a first vibration side 109 close to the hammer head 108 to a second vibration side 110 close to the vibration exciter 2 is 6.8-7 by taking the axis of the supporting shaft 7 as a boundary, so that the natural frequency of the vibration exciting beam 1 can reach 50 Hz; whereas in the previous tests, the natural frequency of the excitation beam 1 hardly exceeded 47 Hz.
The first vibration side 109 is the distance from the end of the excitation beam 1 close to the hammer head 108 to the axis of the supporting shaft 7;
the second vibration side 110 is the distance from the axis of the bearing shaft 7 to the axis of the exciter 2. Tests show that the parameter having a large influence on the natural frequency of the excitation beam is the ratio of the first vibration side 109 to the second vibration side 110, so that the natural frequency of the excitation beam 1 can reach 50 Hz.
Preferably, the length ratio of the first vibration side 109 to the second vibration side 110 is 6.9263.
In a preferred scheme, as shown in fig. 5, a counterweight shaft 6 is further arranged between the hammer head 108 of the excitation beam 1 and the supporting shaft 7;
the length ratio of the hammer head counterweight section 111 to the counterweight supporting section 112 is 0.30-0.32. With this structure, the relationship between the output amplitude of the hammer head 108 and the natural frequency is optimized. That is, the counterweight shaft 6 is close to the hammer 108, so that the amplitude of the excitation beam 1 is reduced, and the natural frequency is increased, but the crushing effect is influenced, for example, the crushing depth is difficult to transmit to the bottom of the cement pavement, and the particle distribution of the crushed cement pavement cannot meet the requirement; the natural frequency is reduced when the hammer head 108 is far away, so that the natural frequency is close to the natural frequency of the cement pavement, and the continuous working time of the excitation beam 1 is influenced
The hammerhead counterweight section 111 is the distance from the end of the excitation beam 1 close to the hammerhead 108 to the axis of the counterweight shaft 6;
the weight support section 112 is a distance from the axis of the weight shaft 6 to the axis of the support shaft 7.
In a preferred scheme, the length of the hammer head counterweight segment 111 is 780 mm; the weight support section 112 has a length of 2510 mm.
In a preferred embodiment, the length of the first vibration side 109 is 3290 mm;
the length of the second vibration side 110 is 475 mm.
Preferably, as shown in fig. 1, the ratio of the length 105 to the width 107 of the excitation beam 1 is 5.95 to 6.
In a preferred scheme, the ratio of the length 105, the width 107 and the thickness of the excitation beam 1 is 71-72: 12: 3.
in the preferred scheme, the length of the excitation beam 1 is 3940 mm; the width is 660 mm; the thickness was 165 mm. With this structure, the natural frequency of the excitation beam is further increased.
In a preferred scheme, a supporting shaft hole 113 is arranged at the position of the supporting shaft 7 on the excitation beam 1, and a second bulge 114 is arranged on the periphery of the supporting shaft hole 113;
a counterweight shaft hole 101 is arranged at the position of the counterweight shaft 6 on the excitation beam 1, and a first bulge 103 is arranged on the periphery of the counterweight shaft hole 101;
the height of the second protrusion 114 and the first protrusion 103 is 10 mm.
In the preferred scheme, the intersection positions of all the surfaces of the excitation beam 1 are provided with arc transitions, the surface of the excitation beam 1 is provided with a polishing layer, and a zinc spraying layer is arranged outside the polishing layer. With the structure, the continuous working time of the excitation beam is further prolonged
Taking an optimal scheme as an example, as shown in fig. 6, the natural frequency of the excitation beam 1 reaches 55.176Hz, so that the natural frequency range from 41 to less than 50Hz of the cement pavement can be completely avoided, and the continuous working time of the excitation beam 1 is ensured.
Example 2:
in example 1, as shown in fig. 2 to 3, an excitation beam 1 is connected to a vehicle body 3 via a support shaft 7, a flexible support boss 9 is provided between the support shaft 7 and the vehicle body 3, an exciter 2 is provided at one end of the excitation beam 1, and the exciter 2 and an excitation motor 8 are connected via a universal shaft. The balance weight shaft 6 of the excitation beam 1 is hinged with a balance weight beam 12 through a balance weight rod 13, one end of the balance weight beam 12 is pivoted with a vehicle body, the other end of the balance weight beam 12 is provided with a balance weight 10, the balance weight beam 12 is connected with the vehicle body through a lifting hydraulic cylinder 4 so as to control the hammer head 108 of the excitation beam 1 to swing and lift, a liftable frequency acquisition device 5 is further arranged near the hammer head 108, and the frequency acquisition device 5 is electrically connected with a display screen 11 positioned in a cab so as to acquire the natural frequency of a cement road surface.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. An excitation beam for a resonance crusher is characterized in that a supporting shaft (7) for supporting is arranged on the excitation beam (1), a hammer head (108) is fixedly arranged at one end of the excitation beam (1), and a vibration exciter (2) is arranged at the other end of the excitation beam (1); the method is characterized in that: the length ratio of a first vibration side (109) close to the hammer head (108) to a second vibration side (110) close to the vibration exciter (2) is 6.8-7 by taking the axis of the supporting shaft (7) as a boundary, so that the natural frequency of the vibration exciting beam (1) is 50-55.2 Hz;
the first vibration side (109) is the distance from the end of the excitation beam (1) close to the hammer head (108) to the axis of the supporting shaft (7);
the second vibration side (110) is the distance from the axis of the bearing shaft (7) to the axis of the exciter (2).
2. The excitation beam for a resonant crusher as set forth in claim 1, wherein: the length ratio of the first vibration side (109) to the second vibration side (110) is 6.9263.
3. The excitation beam for a resonant crusher as set forth in claim 1, wherein: a counterweight shaft (6) is arranged between the hammer head (108) of the excitation beam (1) and the supporting shaft (7);
the length ratio of the hammer head counterweight section (111) to the counterweight supporting section (112) is 0.30-0.32;
the hammerhead counterweight section (111) is the distance from the end of the excitation beam (1) close to the hammerhead (108) to the axis of the counterweight shaft (6);
the counterweight supporting section (112) is the distance from the axis of the counterweight shaft (6) to the axis of the supporting shaft (7).
4. A shock beam for a resonant crusher as set forth in claim 3, wherein: the length of the hammer head counterweight section (111) is 780 mm; the length of the weight support section (112) is 2510 mm.
5. The excitation beam for a resonant crusher as set forth in claim 1, wherein: the length of the first vibration side (109) is 3290 mm;
the length of the second vibration side (110) is 475 mm.
6. The excitation beam for a resonant crusher as set forth in claim 1, wherein: the ratio of the length (105) to the width (107) of the excitation beam (1) is 5.95 to 6.
7. The excitation beam for a resonant crusher as set forth in claim 1, wherein: the ratio of the length (105) to the width (107) to the thickness of the excitation beam (1) is 71-72: 12: 3.
8. the excitation beam for a resonant crusher as set forth in claim 1, wherein: the length of the excitation beam (1) is 3940 mm; the width is 660 mm; the thickness was 165 mm.
9. The excitation beam for a resonant crusher as set forth in claim 1, wherein: a supporting shaft hole (113) is arranged at the position of the supporting shaft (7) on the excitation beam (1), and a second bulge (114) is arranged on the periphery of the supporting shaft hole (113);
a counterweight shaft hole (101) is formed in the position, on the excitation beam (1), of the counterweight shaft (6), and a first bulge (103) is formed in the periphery of the counterweight shaft hole (101);
the height of the second protrusion (114) and the first protrusion (103) is 10 mm.
10. The excitation beam for a resonant crusher as set forth in claim 1, wherein: the intersection positions of all the surfaces of the vibration beam (1) are provided with arc transitions, the surface of the vibration beam (1) is provided with a polishing layer, and a zinc spraying layer is arranged outside the polishing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011425058.2A CN112575663B (en) | 2020-12-08 | 2020-12-08 | Exciting beam for resonance crusher |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011425058.2A CN112575663B (en) | 2020-12-08 | 2020-12-08 | Exciting beam for resonance crusher |
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| CN112575663A true CN112575663A (en) | 2021-03-30 |
| CN112575663B CN112575663B (en) | 2022-06-24 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2903169Y (en) * | 2006-05-13 | 2007-05-23 | 王毅 | Cement concrete vibrating breaker |
| CN202157266U (en) * | 2011-06-15 | 2012-03-07 | 武汉理工大学 | Cement road surface resonance crushing machine |
| CN102561166A (en) * | 2012-02-03 | 2012-07-11 | 安迈路面技术(上海)有限公司 | Resonance breaking method and device for cement pavement |
| CN103526681A (en) * | 2013-09-27 | 2014-01-22 | 同济大学 | Movable node support device applicable to resonant bar of resonance crusher |
| CN206052517U (en) * | 2016-09-13 | 2017-03-29 | 上海雍豪实业有限公司 | A kind of cement concrete pavement disintegrating machine resonance crusher structure |
| CN206070332U (en) * | 2016-09-13 | 2017-04-05 | 昆明隆达企业管理咨询有限公司 | A kind of novel cement concrete road breaker resonance crusher structure |
| CN207121804U (en) * | 2017-08-24 | 2018-03-20 | 宜昌江峡船用机械有限责任公司 | Cement pavement crushes car excitation beam of vibration |
| WO2019210446A1 (en) * | 2018-05-01 | 2019-11-07 | Xu Min | Resonant stone breaking pavement repair and building method for plant internal road |
-
2020
- 2020-12-08 CN CN202011425058.2A patent/CN112575663B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2903169Y (en) * | 2006-05-13 | 2007-05-23 | 王毅 | Cement concrete vibrating breaker |
| CN202157266U (en) * | 2011-06-15 | 2012-03-07 | 武汉理工大学 | Cement road surface resonance crushing machine |
| CN102561166A (en) * | 2012-02-03 | 2012-07-11 | 安迈路面技术(上海)有限公司 | Resonance breaking method and device for cement pavement |
| CN103526681A (en) * | 2013-09-27 | 2014-01-22 | 同济大学 | Movable node support device applicable to resonant bar of resonance crusher |
| CN206052517U (en) * | 2016-09-13 | 2017-03-29 | 上海雍豪实业有限公司 | A kind of cement concrete pavement disintegrating machine resonance crusher structure |
| CN206070332U (en) * | 2016-09-13 | 2017-04-05 | 昆明隆达企业管理咨询有限公司 | A kind of novel cement concrete road breaker resonance crusher structure |
| CN207121804U (en) * | 2017-08-24 | 2018-03-20 | 宜昌江峡船用机械有限责任公司 | Cement pavement crushes car excitation beam of vibration |
| WO2019210446A1 (en) * | 2018-05-01 | 2019-11-07 | Xu Min | Resonant stone breaking pavement repair and building method for plant internal road |
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| CN112575663B (en) | 2022-06-24 |
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