CN203929426U - Historical relic sampling thief - Google Patents

Historical relic sampling thief Download PDF

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Publication number
CN203929426U
CN203929426U CN201420267076.6U CN201420267076U CN203929426U CN 203929426 U CN203929426 U CN 203929426U CN 201420267076 U CN201420267076 U CN 201420267076U CN 203929426 U CN203929426 U CN 203929426U
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CN
China
Prior art keywords
cutter unit
historical relic
control module
sampling thief
driving gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420267076.6U
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Chinese (zh)
Inventor
赵静
罗宏杰
岳巍
王丽琴
李伟东
卓尚军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Institute of Ceramics of CAS
Northwestern University
Original Assignee
Shanghai Institute of Ceramics of CAS
Northwestern University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Institute of Ceramics of CAS, Northwestern University filed Critical Shanghai Institute of Ceramics of CAS
Priority to CN201420267076.6U priority Critical patent/CN203929426U/en
Application granted granted Critical
Publication of CN203929426U publication Critical patent/CN203929426U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a kind of historical relic sampling thief, comprising: cut so that the cutter unit that sample separates for historical relic is rotated; Be connected with described cutter unit and for controlling the control module of advance and retreat of described cutter unit; For driving the driver element of described cutter unit rotation; And for holding the housing of described cutter unit and described control module.Adopt historical relic sampling thief of the present utility model, can guarantee to extract historical relic sample under historical relic information integrity, the complete demand of historical relic meeting in historical relic sampling.

Description

Historical relic sampling thief
Technical field
The utility model belongs to historical relic's protection field, particularly, relates to a kind of for extracting the historical relic sampling thief of historical relic sample.
Background technology
Whole nation historical relic distribution range is extensive, enormous amount, the Chinese world cultural heritage witnesses such as such as famous Shaanxi Qin Shihuang Tomb and terra cotta warriors and horses, Dunhuang, Gansu Province Mogao Grottoes mural painting, the Luoyang, henan the Longmen Grottoes, Hubei Province's ancient buildings the development course of Chinese civilization, invention and the progress of technology are reflected, condense the intelligence and wisdom of the Chinese nation, there is irreplaceable vital role.
At present, more and more extensive and important for the information extraction research of the implicit scientific meaning of all kinds of historical relics.Detect and analyze in order to ensure can can't harm historical relic sample/micro-damage, the collection of sample and information extraction and necessity thereof.In gatherer process, first be the security that will guarantee historical relic sample, being captured in of sample do not affect historical relic decorative pattern, pattern, under the principle of color, select residual device as far as possible, carefully sample in the position that relic or damaged implements are not noted, for complex structure, scleroid mural painting, stone cultural artifact, the samples such as soil ruins historical relic, in sampling process, can not break the layer position relation of sample, change the physical and mechanical properties of sample, in order to meet this requirement, guarantee the to sample information integrity of sample, prevent from sampling process, historical relic being caused compared with havoc simultaneously, design a kind of equipment that is specifically designed to collection historical relic sample and there is necessity and urgency.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of historical relic sampling thief, can guarantee to extract historical relic sample under historical relic information integrity, the complete demand of historical relic meeting in historical relic sampling.
In order to solve the problems of the technologies described above, the utility model provides a kind of historical relic sampling thief, comprising: cut so that the cutter unit that sample separates for historical relic is rotated; Be connected with described cutter unit and for controlling the control module of advance and retreat of described cutter unit; For driving the driver element of described cutter unit rotation; And for holding the housing of described cutter unit and described control module.
According to the utility model, rotate by drive unit drives cutter unit, and then by cutter unit, historical relic is rotated to cutting so that sample separates, and in the time that this cutter unit rotates cutting, by the advance and retreat of the control module control cutter unit that is connected with this cutter unit, thereby can accurately control cutting pressure, the degree of depth and go deep into speed etc., realizing accurate sampling, and the information integrity of the sample of can guaranteeing to sample, prevent from sampling process, historical relic being caused compared with havoc.
In the utility model, described cutter unit also can comprise: be fixed on the cutter unit fixed part in described housing; Be located at rotationally the cutter unit rotation section in this cutter unit fixed part; Described cutter unit rotation section possesses the cutting edge of being located at front end and the follower gear of being located at end, and described follower gear engages with the driving gear of the front end of being located at described control module; Described in described drive unit drives, driving gear rotation is to drive described cutting edge rotation by the described follower gear being meshed with described driving gear.
According to the utility model, drive unit drives is located at the driving gear rotation of the front end of control module, drive the follower gear of being located at cutter unit rotation section end engaging with this driving gear, and then drive the cutting edge of being located at cutter unit rotation section front end to rotate, thereby make the cutting edge of this rotation rotate cutting to historical relic, so that historical relic is sampled.
In the utility model, described control module can comprise: be fixed in described housing and the control module fixed part being connected with described cutter unit fixed part by web member; Be located at rotationally the control module rotation section of this control module fixed part; Described driving gear can be located at the front end of described control module rotation section movably forward and backward; Described control module is also included in and when described driving gear moves backward, is applied in the spring of pressure and the sensor for detection of described pressure; The advance and retreat of cutter unit described in the pressure control that described control module detects according to described sensor.
According to the utility model, cutter unit and control module can be connected to an entirety by web member.In addition,, in the time that driving gear moves backward, spring is subject to this driving gear applied pressure, detects this pressure by sensor; And then the pressure that detects according to sensor of control module is controlled the advance and retreat of cutter unit effectively.
In the utility model, described control module also can comprise the teeth groove of being located at its end, and described housing also comprises the servomotor of being located at its end, engages with described teeth groove from the extended screw rotor of front end of described servomotor; Described in the pressure control that described control module detects according to described sensor, servomotor rotates to drive interconnective described control module and cutter unit advance or retreat by intermeshing described screw rotor and teeth groove forward or backwards.
According to the utility model, the pressure that servomotor can detect according to sensor, controls the rotation of its screw rotor.Particularly, in the utility model, be located at the servomotor of shell end, can be as requested at the uniform velocity forward keep interconnective control module and cutter unit to go deep into speed, or the pressure detecting according to sensor in cutting process makes its screw rotor stall, slightly reversion or lasting reversion, to control the pressure of cutting edge to historical relic sample and connected control module and the advance and retreat of cutter unit, thus can prevent from sampling process, historical relic being caused compared with havoc.
In the utility model, also can comprise the guiding mechanism of direction of motion when the interconnective described control module of restriction and cutter unit are advanced and retreat in described housing.
According to the utility model, the direction of motion while advance and retreat in housing by setting guiding mechanism, can limiting interconnective control module and cutter unit.
In the utility model, described guiding mechanism can comprise the key of being located at respectively on described control module fixed part and described cutter unit fixed part, and be located on the inner peripheral surface of described housing for holding the key way of described key.
According to the utility model, by being located at respectively the key on control module fixed part and cutter unit fixed part, with be located on the inner peripheral surface of housing for holding the key way of key, both control module and cutter unit can be fixed in housing to the direction of motion can effectively limit again interconnective control module and cutter unit and advance and retreat time in housing.
In the utility model, described driver element can comprise buncher and extend and engage with described driving gear to drive the rotor of described driving gear rotation from described buncher.
According to the utility model, adopt buncher, can set in advance rotating speed according to sampling historical relic quality, performance, prevent the too fast destruction historical relic of cutter unit rotating speed, or form cutting resonance and make crisp historical relic cracked, or cut the slow sampling time that affects.
Preferably, this buncher can be the adjustable motor of curent change speed, can be conducive to rotating speed to be controlled.
Further, can be for example cross rotor from the extended rotor of this buncher, this cross rotor can stretch in the cross bore on the driving gear of being for example located at control module front end, thereby drives this driving gear rotation.And then drive cutting edge to rotate by the driving gear of this rotation by the follower gear engaging with it.
In the utility model, described cutting edge can be formed as split blade type structure.
According to the utility model, the cutting edge that is formed as split blade type structure can be conducive to historical relic to rotate cutting.
Preferably, the material of above-mentioned cutting edge can be thin sword wolfram steel class or thick sword silica.In the utility model, cutting edge can use different types according to sampling historical relic quality.The fragile sample blade such as mural painting, native ruins can be selected thin sword wolfram steel class, and the stone cultural artifact that quality is hard, fragility is higher can be selected thick sword silica etc.
In the utility model, between the blade of described cutting edge, can be provided with overflowing road, described overflowing road is communicated with the overflowing hole of being located on the perisporium of described housing.
According to the utility model, the historical relic chip producing when sampling can be discharged from the overflowing hole of housing via overflowing road.
In the utility model, described housing also can comprise with cultural artifact surface butt and prevents for rotate when cutting at described cutter unit the resilient protection part that surrounding historical relic is cracked.
According to the utility model, by this resilient protection part is set, can in the time that rotating cutting, cutter unit prevent that surrounding historical relic is cracked.This resilient protection part can be for example the elastic caoutchouc protective seam of being located at housing front end, and when sampling, this elastic caoutchouc protective seam is close to historical relic sample surfaces, the destruction of the vibrations that produce can prevent from sampling time to historical relic beyond extracted sample.
The beneficial effects of the utility model:
Historical relic sampling thief equipment of the present utility model is easy, safe, effective, can meet sampling requirement and the working specification of historical relic sample, has effectively preserved historical relic information integrity, meets current historical relic's protection demand, has practical application.
The utility model can comprise the combination in any of disclosed at least two structures in claims and/or instructions and/or accompanying drawing.The plural combination in any of every claim that especially, the utility model comprises claims.
According to following embodiment and with reference to accompanying drawing, will understand better above-mentioned and other object of the present utility model, feature and advantage.
Brief description of the drawings
Fig. 1 is according to the structural representation of the historical relic sampling thief of an example of the present utility model;
Fig. 2 is the structural representation of the housing in the historical relic sampling thief shown in Fig. 1;
Fig. 3 is the structural representation of the cutter unit in the historical relic sampling thief shown in Fig. 1;
Fig. 4 is the structural representation of the control module in the historical relic sampling thief shown in Fig. 1;
Fig. 5 is the structural representation of the driver element in the historical relic sampling thief shown in Fig. 1;
Reference numeral
1, cutting edge; 2, overflowing road; 3, overflowing hole; 4, bearing; 5, key; 6, key way; 7, connecting link; 8, key; 9, follower gear; 10, driving gear; 11, cross bore; 12, motor; 13, cross rotor; 14, bearing; 15, pressure spring; 16, pressure inductor; 17, servomotor; 18, screw rotor; 19, teeth groove; 20, rubber cover; 21, the outer ring of bearing 4; 22, cutter unit fixed part; 23, cutter unit rotation section; 24, control module fixed part; 25, control module rotation section; 26, housing.
Embodiment
Further illustrate the utility model below in conjunction with accompanying drawing and following embodiment, should be understood that accompanying drawing and following embodiment are only for the utility model is described, and unrestricted the utility model.
The historical relic sampling thief that the utility model provides, comprising: cut so that the cutter unit that sample separates for historical relic is rotated; Be connected with cutter unit and for controlling the control module of advance and retreat of cutter unit; For driving the driver element of cutter unit rotation; And for holding the housing of cutter unit and control module.
In the utility model, rotate by drive unit drives cutter unit, and then by cutter unit, historical relic is rotated to cutting so that sample separates, and in the time that this cutter unit rotates cutting, by the advance and retreat of the control module control cutter unit that is connected with this cutter unit, thereby can accurately control cutting pressure, the degree of depth and go deep into speed etc., realizing accurate sampling, and the information integrity of the sample of can guaranteeing to sample, prevent from sampling process, historical relic being caused compared with havoc.
In the utility model, described historical relic can comprise immovable mural painting, stone cultural artifact, native ruins historical relic and the historical relic such as pottery movably.
Particularly, Fig. 1 to Fig. 5 shows the historical relic sampling thief according to an example of the present utility model, and wherein Fig. 2 shows the structural representation of the housing 26 in the historical relic sampling thief of this example; Fig. 3 shows the structural representation of the cutter unit in the historical relic sampling thief of this example; Fig. 4 shows the structural representation of the control module in the historical relic sampling thief of this example; And Fig. 5 shows the structural representation of the driver element in the historical relic sampling thief of this example.
As depicted in figs. 1 and 2, historical relic sampling thief comprises the housing 26 for holding cutter unit and control module.And as shown in figures 1 and 3, the cutter unit of the historical relic sampling thief of this example can comprise the cutter unit fixed part 22 being fixed in housing 26 and be located at rotationally the cutter unit rotation section 23 in this cutter unit fixed part 22.
This cutter unit rotation section 23 can possess the cutting edge 1 of being located at front end and the follower gear 9 of being located at end.This follower gear 9 engages with the driving gear 10 of the hereinafter described front end of being located at control module.And drive unit drives driving gear 10 rotates to drive cutting edge 1 to rotate by the follower gear 9 being meshed with this driving gear 10.Thereby make the cutting edge 1 of this rotation rotate cutting to historical relic, so that historical relic is sampled.
As shown in Figure 3, this cutter unit rotation section 23 also can comprise the bearing 4 of being located between cutting edge 1 and follower gear 9.And in this example, cutter unit fixed part 22 comprises the outer ring 21 of being located at these bearing 4 outsides.It is also provided with the key 5(that can form guiding mechanism as hereinafter described in detail on this outer ring 21).
In this example as shown in figures 1 and 3, above-mentioned cutting edge 1 can be formed as split blade type structure, to be conducive to that historical relic is rotated to cutting.In addition, the material of above-mentioned cutting edge 1 can be thin sword wolfram steel class or thick sword silica.In the utility model, cutting edge 1 can use different types according to sampling historical relic quality.The fragile sample blade such as mural painting, native ruins can be selected thin sword wolfram steel class, and the stone cultural artifact that quality is hard, fragility is higher can be selected thick sword silica etc.
Also as shown in figures 1 and 3, between the blade of cutting edge 1, can be provided with overflowing road 2, this overflowing road 2 is communicated with the overflowing hole 3 of being located on the perisporium of housing 26.So that the historical relic chip producing in the time of sampling can be discharged from the overflowing hole 3 of housing 26 via overflowing road 2.
Then,, shown in Fig. 1 and Fig. 4, the control module of this historical relic sampling thief can comprise: be fixed in housing 26 and the control module fixed part 24 being connected with cutter unit fixed part 22 by web member; Be located at rotationally the control module rotation section 25 of this control module fixed part 24.Aforesaid driving gear 10 can be located at the front end of this control module rotation section 25 movably forward and backward.This control module is also included in and when driving gear 10 moves backward, is applied in the spring 15 of pressure and the sensor for detection of the suffered pressure of spring.The advance and retreat of the pressure control cutter unit that control module detects according to sensor.
And also referring to figs. 1 through shown in Fig. 4, the control module in this example also can comprise the teeth groove 19 of being located at its end, and housing 26 also comprises the servomotor 17 of being located at its end.Engage with teeth groove 19 from the extended screw rotor 18 of front end of this servomotor 17.The pressure control servomotor 17 that control module detects according to sensor rotates to drive interconnective control module and cutter unit advance or retreat by intermeshing screw rotor 18 with teeth groove 19 forward or backwards.
Particularly, the sensor can be for example the pressure inductor 16 that is arranged at the end of spring 15.The pressure of spring 15 can reach pressure inductor 16, pressure inductor 16 variation that has a resistance, thus servomotor 17 can, according to this resistance variations, be controlled the rotation of its screw rotor 18.
More specifically, in this example, be located at the servomotor 17 of housing 26 ends, can be as requested at the uniform velocity forward keep the speed of going deep into of interconnective control module and cutter unit, or the pressure detecting according to sensor in cutting process makes its screw rotor 18 stalls, slightly reversion or lasting reversion, to control the pressure of cutting edge to historical relic sample and connected control module and the advance and retreat of cutter unit, thus can prevent from sampling process, historical relic being caused compared with havoc.
With reference to Fig. 1 and Fig. 4, on the control module fixed part 24 of control module, be also provided with key 8 again.Between the key 5 of key 8 and aforementioned cutter unit, be connected with the connecting link 7 as web member, so that control module is connected in aggregates with cutter unit.
In addition, as shown in Figure 1, by the above-mentioned key 5 and 8 of being located at respectively on cutter unit fixed part 22 and control module fixed part 24, and be located on the inner peripheral surface of housing 26 for holding the key way 6 of key 5 and 8, can be construed as limiting the guiding mechanism of interconnective control module and the cutter unit direction of motion in the time of the interior advance and retreat of housing 26, but the utility model is not limited to this.And by this key 5,8 and key way 6, also can effectively cutter unit and control module be fixed in housing 26.
Then,, with reference to Fig. 5, Fig. 5 shows the driver element in the historical relic sampling thief of this example.As shown in Figure 5, driver element can comprise motor 12, for example, can be buncher 12.This driver element also comprises from this buncher 12 and extends and engage with aforementioned driving gear 10 rotor 13 that drives this driving gear 10 to rotate.This buncher can be for example the adjustable motor of curent change speed, can be conducive to rotating speed to be controlled.Adopt buncher, can set in advance rotating speed according to sampling historical relic quality, performance, prevent the too fast destruction historical relic of cutter unit rotating speed, or form cutting resonance and make crisp historical relic cracked, or cut the slow sampling time that affects.
In addition as shown in Figure 5, can be for example cross rotor 13 from the extended rotor 13 of this buncher 12.This cross rotor 13 can stretch into cross bore 11(on the driving gear 10 of being for example located at control module front end referring to Fig. 4) in, thereby drive this driving gear 10 to rotate.And then drive cutting edge 1 to rotate by the driving gear 10 of this rotation by the follower gear 9 engaging with it.
In addition, as depicted in figs. 1 and 2, above-mentioned housing 26 also can comprise with cultural artifact surface butt and prevents for rotate when cutting at cutter unit the resilient protection part that surrounding historical relic is cracked.This resilient protection part can be for example the elastic caoutchouc protective seam 20 of being located at housing 26 front ends.When sampling, this elastic caoutchouc protective seam 20 is close to historical relic sample surfaces, the destruction of the vibrations that produce can prevent from sampling time to historical relic beyond extracted sample.
The following course of work that explains historical relic sampling thief of the present utility model according to the example shown in Fig. 1 to Fig. 5.
By being located at the key 5 on cutter unit and the key 8 of being located on control module, cutter unit and control module are fixed in housing 26 respectively; And be connected to the connecting link 7 of key 5 and key 8 by two ends, cutter unit and control module are connected to an entirety.The follower gear 9 of cutter unit end, engage with the driving gear 10 of control module front end, drive follower gear 9 to rotate by driving gear 10, thereby drive cutting edge 1 to rotate cutting sample, the chip producing when sampling can be discharged from the overflowing hole 3 of housing 26 via overflowing road 2.
In sampling process, the cross rotor 13 of buncher 12 stretches in the middle cross bore 11 of driving gear 10, and cross rotor 13 drives driving gear 10 to rotate, and the follower gear 9 of cutter unit is synchronously rotated.When the cutting edge 1 of cutter unit slows down because historical relic quality inequality is caused follower gear 9 to rotate by sample obstruction, when asynchronous with driving gear 10, when cross rotor 13 drives driving gear 10 to be rotated further, driving gear 10 can slightly leave follower gear 9 and move backward, squeeze pressure spring 15, the pressure of pressure spring 15 can reach pressure inductor 16, pressure inductor 16 has a resistance to change and makes to be located at screw rotor 18 stalls of servomotor 17 front ends on housing 16 or slightly reversion, pull the teeth groove 19 of control module end halt or slightly retreat, and drive by connecting link 7 cutter unit that is positioned at front, to reduce the pressure of cutting edge 1 to sample historical relic, reduce cutting rubbing power, in preventing from cutting, there is overstress destruction historical relic.
When the cutting edge 1 of cutter unit is stopped the rotation by the stuck follower gear 9 that causes of historical relic sample, when cross rotor 13 drives driving gear 10 to be rotated further, driving gear 10 can leave follower gear 9 and significantly move backward, when pressure reaches pressure inductor 16 by pressure spring 15, the pressure inductor 16 resistance variations reversal pressure parameter that reaches capacity, cross rotor 13 reversions of buncher 12 drive driving gear 10 to reverse, and prevent larger compression failure historical relic.After driving gear 10 is inverted to and engages with follower gear 9, drive follower gear 9 and cutting edge 1 to reverse, prevent that cutting edge 1 from embedding in historical relic sample.The screw rotor 18 of servomotor 17 front ends starts reversion simultaneously, drives whole control module, cutter unit to retreat by teeth groove 19.
And, in above-mentioned whole sampling process, by being located at respectively the key 5,8 on cutter unit and control module, with be located on the inner peripheral surface of housing 26 for holding 5,8 key way 6 of key, both control module and cutter unit can be fixed in housing 26, can effectively limit again interconnective control module and the cutter unit direction of motion in the time of the interior advance and retreat of housing 26.
Industrial applicability
Historical relic sampling thief equipment of the present utility model is easy, safe, effective, can meet sampling requirement and the working specification of historical relic sample, has effectively preserved historical relic information integrity, meets current historical relic's protection demand, has practical application.

Claims (10)

1. a historical relic sampling thief, is characterized in that, comprising:
For historical relic being rotated to cutting so that the cutter unit that sample separates;
Be connected with described cutter unit and for controlling the control module of advance and retreat of described cutter unit;
For driving the driver element of described cutter unit rotation; And
For holding the housing of described cutter unit and described control module.
2. historical relic sampling thief according to claim 1, is characterized in that, described cutter unit comprises:
Be fixed on the cutter unit fixed part in described housing; With
Be located at rotationally the cutter unit rotation section in this cutter unit fixed part;
Described cutter unit rotation section possesses the cutting edge of being located at front end and the follower gear of being located at end, and described follower gear engages with the driving gear of the front end of being located at described control module;
Described in described drive unit drives, driving gear rotation is to drive described cutting edge rotation by the described follower gear being meshed with described driving gear.
3. historical relic sampling thief according to claim 2, is characterized in that, described control module comprises:
Be fixed in described housing and the control module fixed part being connected with described cutter unit fixed part by web member; With
Be located at rotationally the control module rotation section of this control module fixed part;
Described driving gear can be located at the front end of described control module rotation section movably forward and backward;
Described control module is also included in and when described driving gear moves backward, is applied in the spring of pressure and the sensor for detection of described pressure;
The advance and retreat of cutter unit described in the pressure control that described control module detects according to described sensor.
4. historical relic sampling thief according to claim 3, it is characterized in that, described control module also comprises the teeth groove of being located at its end, and described housing also comprises the servomotor of being located at its end, engages with described teeth groove from the extended screw rotor of front end of described servomotor; Described in the pressure control that described control module detects according to described sensor, servomotor rotates to drive interconnective described control module and cutter unit advance or retreat by intermeshing described screw rotor and teeth groove forward or backwards.
5. historical relic sampling thief according to claim 4, is characterized in that, also comprises the guiding mechanism of direction of motion when the interconnective described control module of restriction and cutter unit are advanced and retreat in described housing.
6. historical relic sampling thief according to claim 5, it is characterized in that, described guiding mechanism comprises the key of being located at respectively on described control module fixed part and described cutter unit fixed part, and be located on the inner peripheral surface of described housing for holding the key way of described key.
7. historical relic sampling thief according to claim 2, is characterized in that, described driver element comprises buncher and extends and engage with described driving gear to drive the rotor of described driving gear rotation from described buncher.
8. historical relic sampling thief according to claim 2, is characterized in that, described cutting edge is formed as split blade type structure.
9. historical relic sampling thief according to claim 8, is characterized in that, is provided with overflowing road between the blade of described cutting edge, and described overflowing road is communicated with the overflowing hole of being located on the perisporium of described housing.
10. according to the historical relic sampling thief described in any one in claim 1 to 9, it is characterized in that, described housing also comprises with cultural artifact surface butt and prevents for rotate when cutting at described cutter unit the resilient protection part that surrounding historical relic is cracked.
CN201420267076.6U 2014-05-23 2014-05-23 Historical relic sampling thief Expired - Fee Related CN203929426U (en)

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CN201420267076.6U CN203929426U (en) 2014-05-23 2014-05-23 Historical relic sampling thief

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Application Number Priority Date Filing Date Title
CN201420267076.6U CN203929426U (en) 2014-05-23 2014-05-23 Historical relic sampling thief

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111044164A (en) * 2020-01-02 2020-04-21 梅雪竹 Arc-shaped step-in manpower-free single-tube discharging structure and method for food industry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111044164A (en) * 2020-01-02 2020-04-21 梅雪竹 Arc-shaped step-in manpower-free single-tube discharging structure and method for food industry

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