CN203981499U - The non-uniform charger of a kind of large scale coal body - Google Patents
The non-uniform charger of a kind of large scale coal body Download PDFInfo
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- CN203981499U CN203981499U CN201420249892.4U CN201420249892U CN203981499U CN 203981499 U CN203981499 U CN 203981499U CN 201420249892 U CN201420249892 U CN 201420249892U CN 203981499 U CN203981499 U CN 203981499U
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Abstract
The utility model discloses the non-uniform charger of a kind of large scale coal body, belong to the testing machine field in engineering machinery.This charger can carry out the non-uniform dynamic load of large lumpiness coal body, the mechanical condition of real simulation coal body under elasticity, mecystasis according to coal body mechanical condition.It specifically comprises loading main frame, Plumb load unit and side direction loading unit, and large scale coal body is positioned over and loads in main frame; Plumb load unit is provided with five independently load(ing) points, and by five load(ing) points, top board is applied to different load, side direction loading unit has two, lay respectively at the both sides of left plate, right plate, the side direction loading unit of both sides applies different load by three described load(ing) points to described left plate, right plate.The non-uniform charger of the utility model can be realized the shear test of different hardness rock stratum, quantitatively determines the mechanical characteristics such as tensile strength in laboratory.
Description
Technical field
The utility model belongs to the testing machine field in engineering machinery, is specifically related to the non-uniform charger of a kind of large scale coal body.
Background technology
In process of coal mining, coal body damage and failure and stress field evolution are a macromechanics structural system, should avoid as far as possible scale effect impact, to take into full account the influence factor to coal body in stress field transfer process simultaneously, as: the non-uniform property of stress field, the load time, confined pressure impact etc. carrys out the on-the-spot coal body mechanical condition of real simulation, only has abundant grasp stress field distribution, coal and rock character and architectural feature, just can carry out reasonably, the stability of surrounding rock gearing to actual circumstances, surrouding rock deformation and failure analysis, and then propose scientific and reasonable disaster and control and safeguard procedures design.
When coal body carries out mechanical property loading experiment at present, test specimen is small scale sample (50mm * 100mm), loading equipemtn is MTS servo test system, mainly mechanical characteristic and characteristics of Acoustic Emission in sample loading procedure is carried out to Real-Time Monitoring, analyzes damage and failure rule; But the place ahead coal body is under mining-induced stress effect in actual progress of coal mining, the stress distribution at diverse location place is different, and equipment of the prior art cannot the mechanical condition of real simulation coal body under elasticity, mecystasis.
In sum, be badly in need of the non-uniform charger of a kind of large scale coal body, for research coal body destructive characteristics and " inside and outside stress field " form mechanism, provide basic test study condition.
Utility model content
For the problem existing in current correlation test equipment, according to the singularity of deep coal and rock environment of living in, the utility model proposes the non-uniform charger of a kind of large scale coal body, this charger can carry out the non-uniform dynamic load of large scale coal body according to coal body mechanical condition, and test sample size is " 150mm * 150mm * 500mm " to the maximum; Can implement different big or small confined pressures (0～20MPa), the mechanical condition of real simulation coal body under elasticity, mecystasis simultaneously.
Technical solutions of the utility model comprise:
The non-uniform charger of a kind of large scale coal body, comprise Plumb load unit, side direction loading unit and loading main frame, described loading main frame comprises top board, left plate and right plate, described top board and left plate, after being bolted between right plate, be fixed on test framework, large scale coal body is positioned in described loading main frame, described Plumb load unit is positioned at the top of top board, it is provided with five independently load(ing) points, and by five described load(ing) points, top board is applied to different load, described side direction loading unit has two, lay respectively at left plate, the both sides of right plate, the side direction loading unit of both sides is respectively arranged with three independently load(ing) points, and pass through three described load(ing) points to described left plate, right plate applies different load.
Preferably, above-mentioned large scale coal body size maximal value is " 150mm * 150mm * 500mm ".
Preferably, the maximum load load of above-mentioned Plumb load unit is 4500kN, and the load(ing) point being positioned on the side direction loading unit of both sides is symmetrical set, and the maximum load load of every side loading unit is 1200kN.
The useful technique effect that the utility model brings:
The utility model provides a kind of large scale coal body non-uniform charger, compared with prior art, the Plumb load cell layout of this charger above top board has five load(ing) points, in the side plate left and right sides, be furnished with respectively three load(ing) points, each load(ing) point is independent design, can be by regulating the load(ing) point of top board top and the load(ing) point of the left and right sides to realize different loaded load, to realize the non-uniform loading of coal body; According to coal body mechanical condition, carry out non-uniform dynamic load, can implement the confined pressure of different sizes simultaneously, if confined pressure scope is at 0～20MPa, the mechanical condition of real simulation coal body under elasticity, mecystasis;
The maximum load intensity of the utility model charger is 60MPa, and confined pressure is 20MPa, and this device can be realized the shear test of different hardness rock stratum, quantitatively determines the mechanical characteristics such as tensile strength in laboratory; Can realize two dimension and load, the basic datas such as Real-time Collection stress, displacement can be tested many groups coal body or obturation simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is done to further clear, complete explanation:
Fig. 1 is the longitudinal sectional drawing of the utility model charger;
Fig. 2 is the left side view of the utility model charger;
Fig. 3 is the vertical view of the utility model charger;
In figure, 1, large scale coal body, 2, side direction loading unit, 3, side plate, 4, Plumb load unit, 5, top board.
Embodiment
The utility model discloses the non-uniform charger of a kind of large scale coal body, in order to make advantage of the present utility model, technical scheme clearer, clear and definite, below in conjunction with specific embodiment, the utility model is done to further clear, complete explanation.
Its size of large scale coal body of the utility model indication is " 150mm * 150mm * 500mm " to the maximum, and it is 50mm * 50mm * 100mm that minimum dimension is also greater than size of the prior art.
In conjunction with Fig. 1, Fig. 2, shown in Fig. 3, the utility model, the non-uniform charger of a kind of large scale coal body, comprise Plumb load unit 4, side direction loading unit 2 and loading main frame, load main frame and be used for placing large scale coal body 1, also claim coal body test specimen, loading main frame is by base plate, top board 5, side plate 3, be that left plate and right plate form, it is shaped as rectangular parallelepiped, large scale coal body is positioned over and loads in main frame, top board 5, side plate 3 is all to be made by high rigidity steel plate, top board 5 and left plate, after being bolted between right plate, be fixed on test framework and can realize the system dismounting of experiment box and conversion,
Above-mentioned Plumb load unit is set side by side with five load(ing) points, wherein, each load(ing) point is all independently, by each load(ing) point, can apply different load to top board, side direction loading unit has two, lay respectively at the both sides of left plate, right plate, the side direction loading unit of both sides is respectively arranged with three independently load(ing) points, and the side direction loading unit of both sides applies different load by its three load(ing) points to left plate, right plate.
The maximum perpendicular load of above-mentioned Plumb load unit is 4500kN, normal direction load cylinder actuator range 100mm, precision ± 1%F.S; The side direction loading unit at left side plate place comprises 6 load(ing) points, respectively that left side is to 3 load(ing) points of loading unit, right side is to 3 load(ing) points of loading unit, and the load(ing) point of arranged on left and right sides is orthogonal thereto to be arranged symmetrically with, the side direction loading unit maximum horizontal load 1200kN of every side, side direction load cylinder actuator range 200mm, precision ± 1%F.S.
Above-mentioned top board and left side plate are applied to different load, by regulating load(ing) point, realize, the common practise that is adjusted to those skilled in the art for load(ing) point, certainly, therewith the non-uniform charger of large scale be used in conjunction with as Hydrauservo System, loading measurement system, digital simulation control system be also common practise, at this, do not elaborate.
The utility model, the using method of the non-uniform charger of large scale coal body comprises:
The first step, the preparation of large scale coal body, first gather complete gathering coal at working face wall, for example, be of a size of 300mm * 300mm * 600mm, removes to indoor, in handling process, will handle with care, keeps as far as possible the virgin state of coal sample; Indoor, along coal cinder bedding direction, cut into 150mm * 150mm * 500mm large scale coal body, 6 sides of coal body adopt two-sided stone mill to grind, and 3 adjacent side are mutually vertical, and end face out-of-flatness degree is less than 0.1mm;
Second step, large scale coal body are installed, and coal body, is positioned over coal body in the loading main frame of above-mentioned charger after 7 days in indoor seasoning;
The 3rd step, loading, according to test arrangement, regulate the magnitude of load of side direction loading unit, Plumb load unit, realizes the non-uniform loading to large scale coal body.
Claims (3)
1. the non-uniform charger of large scale coal body, comprise Plumb load unit, side direction loading unit and loading main frame, described loading main frame comprises top board, left plate and right plate, described top board and left plate, after being bolted between right plate, be fixed on test framework, large scale coal body is positioned in described loading main frame, it is characterized in that: described Plumb load unit is positioned at the top of top board, it is provided with five independently load(ing) points, and by five described load(ing) points, top board is applied to different load, described side direction loading unit has two, lay respectively at left plate, the both sides of right plate, the side direction loading unit of both sides is respectively arranged with three independently load(ing) points, and pass through three described load(ing) points to described left plate, right plate applies different load.
2. the non-uniform charger of large scale coal body according to claim 1, is characterized in that: described large scale coal body size maximal value is " 150mm * 150mm * 500mm ".
3. the non-uniform charger of large scale coal body according to claim 1, it is characterized in that: the maximum load load of described Plumb load unit is 4500kN, the load(ing) point being positioned on the side direction loading unit of both sides is symmetrical set, and the maximum load load of every side loading unit is 1200kN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249892.4U CN203981499U (en) | 2014-05-16 | 2014-05-16 | The non-uniform charger of a kind of large scale coal body |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420249892.4U CN203981499U (en) | 2014-05-16 | 2014-05-16 | The non-uniform charger of a kind of large scale coal body |
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| CN203981499U true CN203981499U (en) | 2014-12-03 |
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| CN201420249892.4U Expired - Fee Related CN203981499U (en) | 2014-05-16 | 2014-05-16 | The non-uniform charger of a kind of large scale coal body |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713779A (en) * | 2014-12-29 | 2015-06-17 | 神华集团有限责任公司 | Simulating test apparatus used for mining |
| CN109406284A (en) * | 2019-01-10 | 2019-03-01 | 中国矿业大学(北京) | A kind of unequal stress loading device for mechanical test |
| CN110044731A (en) * | 2019-04-29 | 2019-07-23 | 中南大学 | Non- uniformly distributed Normal stress joint straight shear test method and secondary load device |
| CN112903462A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing bearing capacity of single-row group column in horizontal goaf under double-shaft loading |
| CN113008683A (en) * | 2021-02-07 | 2021-06-22 | 山东科技大学 | Experimental device and method for simulating mining non-uniform loading |
-
2014
- 2014-05-16 CN CN201420249892.4U patent/CN203981499U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713779A (en) * | 2014-12-29 | 2015-06-17 | 神华集团有限责任公司 | Simulating test apparatus used for mining |
| CN109406284A (en) * | 2019-01-10 | 2019-03-01 | 中国矿业大学(北京) | A kind of unequal stress loading device for mechanical test |
| CN110044731A (en) * | 2019-04-29 | 2019-07-23 | 中南大学 | Non- uniformly distributed Normal stress joint straight shear test method and secondary load device |
| CN110044731B (en) * | 2019-04-29 | 2021-12-07 | 中南大学 | Non-uniform normal load structural surface direct shear test method and auxiliary loading device |
| CN112903462A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing bearing capacity of single-row group column in horizontal goaf under double-shaft loading |
| CN113008683A (en) * | 2021-02-07 | 2021-06-22 | 山东科技大学 | Experimental device and method for simulating mining non-uniform loading |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20180516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |