CN109799133A - A kind of compound reinforcement load cylinder - Google Patents
A kind of compound reinforcement load cylinder Download PDFInfo
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- CN109799133A CN109799133A CN201910016463.XA CN201910016463A CN109799133A CN 109799133 A CN109799133 A CN 109799133A CN 201910016463 A CN201910016463 A CN 201910016463A CN 109799133 A CN109799133 A CN 109799133A
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Abstract
The invention discloses a kind of compound reinforcements to load cylinder, is related to technical field of hydraulic pressure, does not change the outer dimension of load cylinder, it is possible to increase loading force.The load cylinder includes cylinder body and the First piston bar with cylinder body cooperation, the first end of cylinder body seals, First piston bar can be stretched out or be protruded by the second end of cylinder body, the first hydraulic cavities are formed between the first end of First piston bar and the first end of cylinder body, there are the second hydraulic cavities inside First piston bar, and second hydraulic cavities towards cylinder body first end have evacuation opening, second piston bar is equipped in second hydraulic cavities, first end of the first end of second piston bar towards cylinder body, second piston bar is connect with evacuation opening slidable sealing, the lateral wall of the second end of second piston bar and the inner sidewall sealing of First piston bar are slidably connected.The present invention is for providing loading force.
Description
Technical field
The present invention relates to technical field of hydraulic pressure more particularly to a kind of compound reinforcement to load cylinder.
Background technique
In recent years, with the development of coal mine fully-mechanized mining mechanical mining technology, large coal mine is to hydraulic support support work resistance
Power puts forward higher requirement.Currently, maximum hydraulic support working resistance has reached 26000kN (unit of power, thousand Ns), branch
It supports height 8800mm (length unit, millimeter), matched column cylinder diameter reaches 600mm (millimeter).According to national related political affairs
The requirement of plan, mining product, which is gone into the well, to be needed before use to detect by authoritative testing agency qualified, obtains safety sign certificate rear
Can go into the well use.
The prior art provides a kind of load cylinder, carries out load test to hydraulic support column, as shown in Figure 1, including cylinder
Body 01 and First piston bar 02 with cylinder body cooperation, the first end sealing of cylinder body 01, First piston bar 02 can be by the of cylinder body 01
Two ends are stretched out or are protruded into, and highly pressurised liquid enters cylinder body 01 by oil inlet 03, and upward active force is generated to First piston bar 02, by
This provides loading force.
Since loading force is at least up to twice of subject column rated load, load cylinder cylinder diameter generally reaches 1000mm (milli
Rice) more than can meet requirement.According to the prior art, cylinder is loaded using large-diameter, difficulty of processing is big and has certain
Security risk；And smaller cylinder diameter is used to load cylinder, nominal force is insufficient, is unable to satisfy load force request.
Summary of the invention
The embodiment of the present invention provides a kind of compound reinforcement load cylinder, adds when being able to solve hydraulic support column load test
Carry the insufficient technical problem of cylinder nominal force.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
A kind of compound reinforcement loads cylinder, the First piston bar including cylinder body and with cylinder body cooperation, and the of the cylinder body
One end sealing, the First piston bar can be stretched out or be protruded into, the first end of the First piston bar by the second end of the cylinder body
The first hydraulic cavities are formed between the first end of the cylinder body, there are the second hydraulic cavities inside the First piston bar, and described
The first end of second hydraulic cavities towards cylinder body has evacuation opening, is equipped with second piston bar in second hydraulic cavities,
Towards the first end of the cylinder body, the second piston bar and the evacuation are open slidably the first end of the second piston bar
It is tightly connected, the lateral wall of the second end of the second piston bar and the inner sidewall sealing of the First piston bar are slidably connected.
The compound reinforcement of the embodiment of the present invention loads cylinder, in order to increase the loading force of load cylinder, the first of First piston bar
The first hydraulic cavities are formed between end and the first end of cylinder body, and there are the second hydraulic cavities, and the second hydraulic cavities inside First piston bar
There is evacuation opening towards the first end of cylinder body, be equipped with second piston bar in the second hydraulic cavities, the of second piston bar
One end towards cylinder body first end, second piston bar with evacuation opening slidable sealing connect, the second end of second piston bar
Lateral wall and the sealing of the inner sidewall of First piston bar are slidably connected.When highly pressurised liquid enters inside cylinder body and First piston bar
Two hydraulic cavities, in cylinder body, highly pressurised liquid applies upward active force to the first end of First piston bar.In First piston bar
In second hydraulic cavities, second piston bar pressure downward by downward gravity and highly pressurised liquid simultaneously, therefore second piston bar
First end and cylinder body the first end in contact, second piston bar remain stationary.During highly pressurised liquid is continuously increased, due to
Two piston rods are stationary, and highly pressurised liquid generates upward active force to the second end of First piston bar.Increase compared with prior art
Added the active force that highly pressurised liquid is upward to the second end of First piston bar, with highly pressurised liquid to the first end of First piston bar to
On active force superposition, neither change load cylinder outer dimension, hence it is evident that increase load cylinder loading force, to solve hydraulic branch
The insufficient technical problem of cylinder nominal force is loaded when erecting column load test.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is a kind of cross section structure schematic diagram of load cylinder of the prior art；
Fig. 2 is that the compound reinforcement of the embodiment of the present invention loads the cross section structure schematic diagram of cylinder；
Fig. 3 is that the compound reinforcement of the embodiment of the present invention loads the second piston bar of cylinder without oil guiding hole structural schematic diagram.
Appended drawing reference:
01- cylinder body；02- First piston bar；03- hydraulic fluid port；04- hydraulic fluid port；1- cylinder body；2- First piston bar；3- second piston
Bar；The first hydraulic cavities of 4-；The second hydraulic cavities of 5-；31- oil guiding hole；21- evacuation opening；The first hydraulic fluid port of 11-；The second hydraulic fluid port of 12-；
22- third hydraulic fluid port；The 4th hydraulic fluid port of 23-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or
It is more than two.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected.It is right
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Compound reinforcement provided in an embodiment of the present invention loads cylinder, as shown in Fig. 2, include cylinder body 1 and cooperate with cylinder body 1 the
One piston rod 2, the first end sealing of cylinder body 1, First piston bar 2 can be stretched out or be protruded into, First piston bar by the second end of cylinder body 1
The first hydraulic cavities 4 are formed between 2 first end and the first end of cylinder body 1, and there are the second hydraulic cavities 5 inside First piston bar 2, and
The first end of second hydraulic cavities 5 towards cylinder body 1 has evacuation opening 21, is equipped with second piston bar in the second hydraulic cavities 5
3, towards the first end of cylinder body 1, second piston bar 3 connect with evacuation 21 slidable sealings of opening for the first end of second piston bar 3,
The lateral wall of the second end of second piston bar 3 and the inner sidewall sealing of First piston bar 2 are slidably connected.
The compound reinforcement of the embodiment of the present invention loads cylinder, in order to increase the loading force of load cylinder, as shown in Fig. 2, first is living
The first hydraulic cavities 4 are formed between the first end of stopper rod 2 and the first end of cylinder body 1, and there are the second hydraulic cavities inside First piston bar 2
5, and the first end of the second hydraulic cavities 5 towards cylinder body 1 has evacuation opening 21, it is living to be equipped with second in the second hydraulic cavities 5
Stopper rod 3, the first end of the first end of second piston bar 3 towards cylinder body 1, second piston bar 3 and evacuation 21 slidable sealings of opening
Connection, the lateral wall of the second end of second piston bar 3 are slidably connected with the inner sidewall sealing of First piston bar 2.Work as highly pressurised liquid
Into the second hydraulic cavities 5 inside cylinder body 1 and First piston bar 2, in cylinder body 1, highly pressurised liquid to First piston bar 2 first
End applies upward active force.In the second hydraulic cavities 5 of First piston bar 2, second piston bar 3 is simultaneously by downward gravity
The downward pressure with highly pressurised liquid, therefore the first end in contact of the first end of second piston bar 3 and cylinder body 1, second piston bar 3 are protected
It holds static.During highly pressurised liquid is continuously increased, since 3 bar of second piston is stationary, highly pressurised liquid is to First piston bar 2
Second end generate upward active force, move upwards First piston bar 2.Highly pressurised liquid is increased compared with prior art to
The upward active force of the second end of one piston rod 2, it is folded with the upward active force of first end of the highly pressurised liquid to First piston bar 2
Add, neither changes load cylinder outer dimension, hence it is evident that increase the loading force of load cylinder.
It should be noted that, referring to Fig. 2, the loading force of load cylinder is calculated to verify the loading force of load cylinder,
Specific formula are as follows:
Directed force F of the highly pressurised liquid to 2 first end of First piston bar1=P × A1=P × π × (R2 2-R3 2)；
Directed force F of the highly pressurised liquid to 2 second end of First piston bar2=P × A2=P × π × R1 2；
Total force F=F1+F2。
Wherein P: the pressure of highly pressurised liquid, A1: the contact area of the first end of highly pressurised liquid and First piston bar 2, A2: it is high
The contact area of the second end of press liquid and First piston bar 2, R2: the radius of cylinder body 1, R3: the first end of second piston bar 3
Radius, R1: the radius of the second end of First piston bar 2.
The prior art is to 2 generation directed force Fs of First piston bar1, compound reinforcement load cylinder provided in an embodiment of the present invention
Increase directed force F2, to increase the loading force of load cylinder.
It, can be in the side of First piston bar 2 in order to make to enter highly pressurised liquid in the second hydraulic cavities 5 inside First piston bar 2
Wall, and opened up close to the position of second end and open up oil guiding hole 31 in the 4th hydraulic fluid port 23 or second piston bar 3, reference Fig. 3, Fig. 2,
But during highly pressurised liquid enters the second hydraulic cavities 5, First piston bar 2 is constantly moved upwards, and pulls oil pipe, it is not square
Just oiling, therefore preferential using the method for opening up oil guiding hole 31 in second piston bar 3, as shown in Fig. 2, oil guiding hole 31 is by cylinder body 1
It is connected with the second hydraulic cavities 5 of First piston bar 2.When highly pressurised liquid enters in cylinder body 1, pass through the oil guiding hole of second piston bar 3
31 flow into the second hydraulic cavities 5 of First piston bar 2.
The outlet that the oil guiding hole 31 of second piston bar 3 is connected in cylinder body 1 may be disposed at the side wall or first of second piston bar 3
On end, if the oil guiding hole 31 of second piston bar 3 is connected to the outlet in cylinder body 1 and is located in the first end of second piston bar 3, second is living
Stopper rod 3 cannot be introduced into the second of First piston bar 2 because of self gravity, the first end in contact of first end and cylinder body 1, highly pressurised liquid
In hydraulic cavities 5, therefore outlet should be set on side wall.There are many embodiments for its position on side wall, if second piston bar 3
Oil guiding hole 31 be connected to outlet and second piston bar 3 in cylinder body 1 first end it is apart from each other, when original state, second is hydraulic
The evacuation opening 21 of chamber 5 will be located at below the outlet that oil guiding hole 31 is connected in cylinder body 1, so that highly pressurised liquid cannot be introduced into the second liquid
It presses in chamber 5, loading force can not be increased.Therefore referring to Fig. 2, the outlet that the oil guiding hole 31 of second piston bar 3 is connected in cylinder body 1 is close
The first end of second piston bar 3 is arranged, and being located on the side wall of second piston bar 3 is preferred plan.
In order to make highly pressurised liquid generate upward active force to the second end of First piston bar 2, the first of second piston bar 3
End is fixedly connected with the inner wall of the first end of cylinder body 1.As highly pressurised liquid is continuously increased, since second piston bar 3 is stationary,
Highly pressurised liquid generates upward active force to the second end of First piston bar 2, and the second end that push First piston bar 2 is transported upwards
It is dynamic.It should be noted that the first end of second piston bar 3 is fixedly connected with only a kind of embodiment party with the inner wall of the first end of cylinder body 1
The first end of formula, second piston bar 3 can move up and down in cylinder body 1, until due to the pressure of gravity and highly pressurised liquid, with cylinder body
1 the first end in contact is simultaneously remain stationary.
Second piston bar 3, which is located at the part in cylinder body 1, to be the various shapes such as rectangular, cylindrical, due to second piston bar 3
The inner sidewall sealing of lateral wall and First piston bar 2 of second end be slidably connected, second piston bar 3 is located at the second hydraulic cavities 5
In part be cylinder, therefore its part being located in cylinder body 1 preferentially selects cylinder, is more convenient for processing.Due to the second work
The diameter that stopper rod 3 is located at the part in cylinder body 1 is smaller, and the highly pressurised liquid entered in cylinder body 1 is more, to First piston bar 2
The active force of first end is bigger, therefore referring to Fig. 2, and second piston bar 3 is located at the part in cylinder body 1 for cylinder, and second is living
The diameter that stopper rod 3 is located at the part in cylinder body 1 is less than the diameter for the part that second piston bar 3 is located in the second hydraulic cavities 5.
If in addition second piston bar 3 is located at the center line of the part in cylinder body 1 and second piston bar 3 is located at the second hydraulic cavities
The center line of part in 5 is not overlapped, it is difficult to it processes, and active force suffered by the second end each point of second piston bar 3 is uneven, because
The center line that this second piston bar 3 is located at the part in cylinder body 1 is located at the part in the second hydraulic cavities 5 with second piston bar 3
Center line is overlapped.
In order to make highly pressurised liquid respectively enter the first liquid of the first end of First piston bar 2 and the first end formation of cylinder body 1
Press chamber 4, in the second hydraulic cavities 5 inside First piston bar 2, can there are many implementation.
If second piston bar 3 does not set oil guiding hole 31, referring to Fig. 3, the first hydraulic fluid port 11 of connection hydraulic oil is offered on cylinder body 1
With the second hydraulic fluid port 12, offer the third hydraulic fluid port 22 and the 4th hydraulic fluid port 23 of connection hydraulic oil in the second hydraulic cavities 5, highly pressurised liquid from
First hydraulic fluid port 11 enters in cylinder body 1, and upward active force is generated to the first end of First piston bar 2, enters from the 4th hydraulic fluid port 23
In second hydraulic cavities 5, upward active force is generated to the second end of First piston bar 2.The superposition of two active forces increases load cylinder
Loading force.When restPosing, the highly pressurised liquid in cylinder body 1 passes through 11 oil return of the first hydraulic fluid port on cylinder body 1, the second hydraulic cavities
Highly pressurised liquid in 5 is by 23 oil return of the 4th hydraulic fluid port, while highly pressurised liquid is from 22 oil inlet of the second hydraulic fluid port 12 and third hydraulic fluid port, to the
One piston rod 2 generates downward active force, therefore First piston bar 2 returns to original state.
If second piston bar 3 sets oil guiding hole 31, referring to Fig. 2,11 He of the first hydraulic fluid port of connection hydraulic oil is offered on cylinder body 1
Second hydraulic fluid port 12, highly pressurised liquid enter in cylinder body 1 from the first hydraulic fluid port 11, and it is living that the oil guiding hole 31 through second piston bar 3 flows into first
In second hydraulic cavities 5 of stopper rod 2, active force upward at two, when restPosing, 1 He of cylinder body are generated to First piston bar 2
Highly pressurised liquid in second hydraulic cavities 5 by 11 oil return of the first hydraulic fluid port on cylinder body 1, while highly pressurised liquid from the second hydraulic fluid port 12 into
Oil generates downward active force to First piston bar 2, returns to original state；Alternatively, offering third oil in the second hydraulic cavities 5
Mouth 22, highly pressurised liquid enter in cylinder body 1 from the first hydraulic fluid port 11, and the oil guiding hole 31 through second piston bar 3 flows into First piston bar 2
In second hydraulic cavities 5, active force upward at two, when restPosing, cylinder body 1 and the second liquid are generated to First piston bar 2
Press the highly pressurised liquid in chamber 5 by 11 oil return of the first hydraulic fluid port on cylinder body 1, while highly pressurised liquid is oily from the second hydraulic fluid port 12 and third
22 oil inlets of mouth, downward active force is generated to First piston bar 2, returns to original state.
The above is only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, any to be familiar with
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those skilled in the art, should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to protection scope described in claim.
Claims (8)
1. a kind of compound reinforcement loads cylinder, the First piston bar including cylinder body and with cylinder body cooperation, and the first of the cylinder body
End sealing, the First piston bar can be stretched out or be protruded by the second end of the cylinder body, which is characterized in that the First piston bar
First end and the cylinder body first end between form the first hydraulic cavities, have inside the First piston bar second hydraulic
Chamber, and the first end of second hydraulic cavities towards cylinder body has evacuation opening is equipped with the in second hydraulic cavities
Two piston rods, the first end of the first end of the second piston bar towards the cylinder body, the second piston bar and the evacuation
Be open slidable sealing connection, and the inner sidewall of the lateral wall of the second end of the second piston bar and the First piston bar seals
It is slidably connected.
2. compound reinforcement according to claim 1 loads cylinder, which is characterized in that offer Oil Guide in the second piston bar
The cylinder body is connected with second hydraulic cavities for hole, the oil guiding hole.
3. compound reinforcement according to claim 2 loads cylinder, which is characterized in that it is intracorporal that the oil guiding hole is connected to the cylinder
The first end exported close to the second piston bar is arranged, and is located at the side wall along the second piston bar.
4. compound reinforcement according to claim 1 loads cylinder, which is characterized in that the first end of the second piston bar and institute
The inner wall for stating the first end of cylinder body is fixedly connected.
5. compound reinforcement according to claim 1 loads cylinder, which is characterized in that the second piston bar is located at the cylinder body
Interior part is cylinder, and the second piston bar is located at the diameter of the intracorporal part of the cylinder less than the second piston bar
The diameter of part in second hydraulic cavities.
6. compound reinforcement according to claim 5 loads cylinder, which is characterized in that the second piston bar is located at the cylinder body
The center line of interior part is overlapped with the center line that the second piston bar is located at the part in second hydraulic cavities.
7. compound reinforcement according to claim 1 loads cylinder, which is characterized in that offer connection hydraulic oil on the cylinder body
The first hydraulic fluid port and the second hydraulic fluid port, the third hydraulic fluid port and the 4th hydraulic fluid port of connection hydraulic oil are offered in second hydraulic cavities.
8. compound reinforcement according to claim 2 loads cylinder, which is characterized in that offer connection hydraulic oil on the cylinder body
The first hydraulic fluid port and the second hydraulic fluid port, or, offered in second hydraulic cavities connection hydraulic oil third hydraulic fluid port and the 4th hydraulic fluid port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910016463.XA CN109799133A (en) | 2019-01-08 | 2019-01-08 | A kind of compound reinforcement load cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910016463.XA CN109799133A (en) | 2019-01-08 | 2019-01-08 | A kind of compound reinforcement load cylinder |
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| CN109799133A true CN109799133A (en) | 2019-05-24 |
Family
ID=66558611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910016463.XA Pending CN109799133A (en) | 2019-01-08 | 2019-01-08 | A kind of compound reinforcement load cylinder |
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| CN108518381A (en) * | 2018-06-11 | 2018-09-11 | 江苏万川高压电气有限公司 | A kind of tight boosting hydraulic cylinder of servo-actuated self-locking |
| CN108843651A (en) * | 2018-06-11 | 2018-11-20 | 江苏万川高压电气有限公司 | A kind of major-minor hydraulic cylinder force-increasing mechanism of the tight boosting hydraulic cylinder of servo-actuated self-locking |
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Application publication date: 20190524 |