CN103899343B - Freedom degree parallel connection hydraulic support - Google Patents
Freedom degree parallel connection hydraulic support Download PDFInfo
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- CN103899343B CN103899343B CN201410160318.6A CN201410160318A CN103899343B CN 103899343 B CN103899343 B CN 103899343B CN 201410160318 A CN201410160318 A CN 201410160318A CN 103899343 B CN103899343 B CN 103899343B
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Abstract
The invention discloses a kind of freedom degree parallel connection hydraulic support, comprise base, front supporting mechanism in parallel, rear supporting mechanism in parallel, back screen device, back timber and extensible canopy.Described front supporting mechanism in parallel, rear supporting mechanism in parallel be connected in parallel between base and back timber, its structure is identical, is the parallel institution of 3-RPC structure; Back screen device is positioned at the rear end of rear supporting mechanism in parallel, is all connected by hinge with base, back timber, and its lower end is provided with the end backplate of position and adjustable angle; Be provided with top side backplate in the both sides of back timber, be embedded with extensible canopy in the inside of back timber, be provided with face guard at the head of extensible canopy.The present invention can overcome the technological deficiency of existing hydraulic support, the load in the three degree of freedom direction, space comprising lateral force can be born, the generation of the security incidents such as frame can be avoided down, improve the stability of strutting system of hydraulic support and the compliance to country rock, also there is the advantages such as steady quality is reliable, Operation and Maintenance is convenient.
Description
Technical field
The present invention relates to mining machinery technical field, particularly a kind of freedom degree parallel connection hydraulic support bearing lateral force.
Background technology
Comprehensive mechanized coal mining equipment is made up of hydraulic support, coal-winning machine and transporter, and hydraulic support is as comprehensive mechanical coal mining work capital equipment, and one-time investment accounts for combine adopts more than 70% of equipment total fund, is the key that fully-mechanized mining working realizes safety, High-efficient Production.The top of hydraulic support, base plate must adapt to mining face under mine coal seam environment, for operating personnel provide safe working space, also will for adopting, fortune equipment provides effective power source, determines the normal fltting speed of Harvesting equipment.Therefore, hydraulic support is the key equipment that can fully-mechanized mining working realize high-yield and high-efficiency success or failure.
Combine when adopting operation, hydraulic support dispersed placement, on whole coal-face, realizes supporting, cuts top, certainly moves and the operation such as pushing and sliding, and the flexible flightconveyor of it and high-power coal cutter, large conveying quantity forms the comprehensive mechanization equipment of stope.Combine when adopting operation, the key factor of hydraulic support or the success or failure of high seam Longwall top coal caving technology.Now widely used hydraulic support is all grow up on the double leval jib hydraulic support basis of people from former Soviet Union design sixties in last century.But due to seam inclination and architectonic reason, the pressure of top board to hydraulic support certainly exists cross component force.And the connection of existing double leval jib type bracket upright post is all adopt spherical hinge to make bracket upright post and back timber all not bear the ability of lateral force, lateral force then passes to linkage by caving shield, this is the basic reason causing down frame and bracket institution to damage, and thus existing link type hydraulic support exists principle defect.Because lanar four rod mechanism only has 1 degree of freedom, the degree of freedom of 2 parallel lanar four rod mechanisms is-1, and belong to indeterminate mechanism, cause hydraulic support poor stability, bearing height is also restricted.And China Mine Geological complex structure, in actual applications due to the out-of-flatness of top board and the change of seam inclination, larger additional load can be produced, cause caving shield damage, the serious accident such as frame and downslide.
From double leval jib type hydraulic support invention since over more than 50 year, each producing coal country of the world has all in use carried out large quantifier elimination and improvement to based on double leval jib type hydraulic support.But the series of problems such as the controllability of the stability of strutting system based on double leval jib hydraulic support, the compliance to top board and support are never solved.Thus, develop and a kind of there is stability of strutting system, a global difficult problem is become to the compliance of top board and the good hydraulic support of controllability.Based on double leval jib hydraulic support stability, be not the problem of structure design to the compliance of top board and the Controllability of support, but have based on double leval jib hydraulic support mechanism that principle defect causes.And parallel institution has that the rigidity of structure is large, supporting capacity is strong, inertia is little, location and kinematic accuracy high, parallel institution becomes the optimum supporting mechanism of mine hydraulic bracket, its high stability and the compliance the most complete to movement of roof, and in self structure best mechanical property to determine parallel hydraulic stent support height large, high stability, lightweight, pass fast superiority.In view of the existing principle defect existed based on double leval jib hydraulic support, the sub-penetrating judgment of bandit of Institutes Of Technology Of Taiyuan is awarded and Master degree candidate Wei Jin etc. proposes parallel institution to be applied in the design of hydraulic support, namely a kind of series of problems brought to solve double leval jib type hydraulic support principle defect based on the new type hydraulic bearer of parallel institution is designed, early stage is mostly the six-freedom parallel hydraulic support based on 6-SPS parallel institution about the design and research of parallel hydraulic support, and the hydraulic support of the actual use of underground coal mine work plane does not need six-freedom degree.Excessive degree of freedom not only makes the complex structure of hydraulic support, difficulty of processing improves, and machining accuracy is difficult to improve, and also add the manufacturing cost of hydraulic support, and all brings difficulty and inconvenience to control, operation and maintenance.
And adopt the parallel institution of three translation Three Degree Of Freedoms can realize hydraulic support as the body supports mechanism of hydraulic support to realize limited appointment relative to roof and floor and allow pressure motion and effectively carrying, the cross component force from other direction also can be born except mainly bearing pressure at right angle that top board and base plate apply hydraulic support, effectively can improve the support performance of hydraulic support, improve the reliability of supporting, safety and stability, caving shield is avoided to damage, the generation of the security incident such as frame and downslide, overcome the shortcoming of existing hydraulic support, by the great social benefit of generation and huge economic benefit.
Summary of the invention
The object of the invention is the deficiency for existing hydraulic support technology, a kind of freedom degree parallel connection hydraulic support bearing lateral force is provided.Technical problem to be solved by this invention realizes by the following technical solutions.
A kind of freedom degree parallel connection hydraulic support, comprises base, front supporting mechanism in parallel, rear supporting mechanism in parallel, back screen device, back timber and extensible canopy.Wherein, described pan frontward end face is arcwall face, is convenient to hydraulic support and moves; Push rod is provided with, for passing hydraulic support and the drag conveyor with hydraulic support auxiliary work in the centre position of base; End junction plate is provided with in the rear end of base.Described supporting mechanism front in parallel and rear supporting mechanism in parallel are the body supports mechanism of freedom degree parallel connection hydraulic support, for the lateral load of the load He other direction of bearing the vertical direction of shoulder bed effects between base and back timber; Described supporting mechanism front in parallel is identical with the structure of rear supporting mechanism in parallel, is three translation 3-freedom parallel mechanisms of 3-RPC structure; Described supporting mechanism front in parallel is connected in parallel between base and back timber with rear supporting mechanism in parallel, and its lower end symmetry is arranged on base, and the top of front supporting mechanism in parallel, rear supporting mechanism in parallel is all connected with back timber.The pressure that described back screen device is mainly used in bearing hydraulic support horizontal force and is caving balkstone, prevents the spoil of erecting dense individual props from entering the below of hydraulic support, to ensure personnel and equipment work safety below hydraulic support; Described back screen device can also bear the horizontal applied force from top board and back timber simultaneously, plays the stability improving Roof Control by Means of Hydraulic Supports; Described back screen device is positioned at the rear end of described supporting mechanism rear in parallel, and its front end is connected by hinge with base, and its top is connected by hinge with back timber.Be provided with top side backplate in the both sides of back timber, be embedded with extensible canopy in the inside of back timber, for extending the working space of hydraulic support, described back timber is connected with extensible canopy by extensible canopy jack; Face guard is provided with at the head of extensible canopy.Described face guard and top side backplate are for playing gear cash, anti-down tune frame and extending the effect of hydraulic support left and right sides to support work scope.
Described back screen device forms by connecting otic placode, front angular adjustment jack, caving shield, rear angular adjustment jack, river bottom protection jack, rear side backplate and river bottom protection plate, the lower end of described connection otic placode is connected by hinge with end junction plate, and its upper end is provided with slippage bearing pin and is connected by slip hinge with caving shield; The two ends of described front angular adjustment jack are connected by hinge with end junction plate, river bottom protection plate respectively; The top of described caving shield is connected by hinge with back timber, and reinforcement gusset inside caving shield is provided with long waist shaped hole and lower long waist shaped hole; The upper end of described rear angular adjustment jack is connected by hinge with caving shield, and the lower end empty set of rear angular adjustment jack is on the slippage bearing pin connecting otic placode; The upper end of described river bottom protection jack is connected by hinge with caving shield, and its lower end is provided with slippage optical axis, and the two ends of described slippage optical axis are placed in the lower long waist shaped hole of caving shield, and river bottom protection plate is connected by hinge with slippage optical axis; Rear side backplate is positioned at the both sides of caving shield.
Described supporting mechanism front in parallel and rear supporting mechanism in parallel form by fixed base plate, movable panel and three support chain be connected between fixed base plate and movable panel.Described fixed base plate and base are connected; Three described support chain are connected in parallel between fixed base plate, movable panel, and described three support chain are the Series Sheet open chain of RPC structure; Described movable panel and back timber are connected.Described support chain is made up of hinged ear seat, double acting hydraulic cylinder and two damping Connection Block.Described hinged ear seat is arranged on fixed base plate; The lower end of described double acting hydraulic cylinder is connected by hinge with hinged ear seat, its upper end is connected by cylindrical pair with two damping Connection Block, and described double acting hydraulic cylinder can according to the support work height of hydraulic support need select two-stage to stretch double acting hydraulic cylinder or three grades of flexible double acting hydraulic cylinders.Described two damping Connection Blocks play cylindrical pair and apply the effect of damping along cylindrical pair axis direction, described two damping Connection Blocks comprise multidigit fixed head, damper and meta bearing pin, described meta bearing pin is positioned at the centre position of multidigit fixed head and is connected with multidigit fixed head, described damper has two and is arranged symmetrically in the both sides of meta bearing pin, and the two ends of damper are all connected with multidigit fixed head by hinge.
Before described in supporting mechanism in parallel or rear supporting mechanism in parallel, the axis of the meta bearing pin at three described support chain tops is that isosceles triangle is arranged, the axis of the hinge hole of three described support chain bottom-hinged ear seats is also arranged in isosceles triangle, and the axis being parallel of the meta bearing pin of same support chain upper top is in the axis of the hinge hole of bottom-hinged ear seat.
During use, the collapsing length of the double acting hydraulic cylinder of three support chain of front supporting mechanism in parallel and rear supporting mechanism in parallel is regulated according to the actual needs in support works face, back timber is risen, withstand top country rock, regulate extensible canopy jack again, extensible canopy is stretched out, extend the working space of hydraulic support, and then regulate top side backplate and face guard, make it launch respectively; Then the collapsing length of angular adjustment jack after regulating, slippage bearing pin moves down, and back screen device is launched backward, withstands rear portion country rock, again rear side is protected expansion, and then regulate the collapsing length of river bottom protection jack, slippage optical axis is moved down, realizes the translation of river bottom protection plate, extend the working space of back screen device, when slippage optical axis is displaced downwardly to the lower long waist shaped Kongzui bottom of caving shield, under front angular adjustment jack telescopic action, realize the swing of river bottom protection plate around slippage optical axis axis; Last under this duty, the push rod of base is stretched out, realizes the function of pushing and sliding drag conveyor.
When needs mobile hydraulic support, regulate the collapsing length of double acting hydraulic cylinder, extensible canopy jack, rear angular adjustment jack, front angular adjustment jack, make back timber decline, extensible canopy is retracted, back screen device is regained, rear backplate is retracted, pack up top side backplate again, face guard, rear side protect, the pusher retracted of last base, realizes moving holder function.
The invention has the beneficial effects as follows, compared with prior art, the present invention adopts the body supports mechanism of parallel institution 3-RPC as freedom degree parallel connection hydraulic support of two group of three translation Three Degree Of Freedom, hydraulic support can be realized realize limited appointment relative to roof and floor and allow pressure motion and effectively carrying, not only can bear top board and base plate also can bear the cross component force from other direction outward to the pressure at right angle that hydraulic support applies, effectively can improve the support performance of hydraulic support, improve the reliability of supporting, safety and stability, caving shield is avoided to damage, the generation of the security incident such as frame and downslide, overcome the shortcoming of existing hydraulic support.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention;
Fig. 2 is the structural representation of back screen device of the present invention;
Fig. 3 is the operating diagram of river bottom protection plate when rotatable state of back screen device;
Fig. 4 is the structural representation of front supporting mechanism in parallel of the present invention;
Fig. 5 is the mechanism principle schematic diagram of the support chain of front supporting mechanism in parallel;
Fig. 6 is the structural representation of two damping Connection Blocks of support chain;
Fig. 7 is that three hinged ear seats of support chain arrange schematic diagram on fixed base plate;
Fig. 8 is three the two layout schematic diagrames of damping Connection Block on movable panel of support chain.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment and diagram, setting forth the present invention further.
As shown in Figure 1, Figure 2 and Figure 4, a kind of freedom degree parallel connection hydraulic support, comprises base 1, front supporting mechanism 2 in parallel, rear supporting mechanism 3 in parallel, back screen device 4, back timber 5 and extensible canopy 6.Wherein, described base 1 front end face is arcwall face, is convenient to hydraulic support and moves; Push rod 101 is provided with, for passing hydraulic support and the drag conveyor with hydraulic support auxiliary work in the centre position of base 1; End junction plate 102 is provided with in the rear end of base 1.Described supporting mechanism 2 front in parallel and rear supporting mechanism 3 in parallel are the body supports mechanism of freedom degree parallel connection hydraulic support, for the lateral load of the load He other direction of bearing the vertical direction of shoulder bed effects between base 1 and back timber 5; Described supporting mechanism 2 front in parallel is identical with the structure of rear supporting mechanism 3 in parallel, is three translation 3-freedom parallel mechanisms of 3-RPC structure; Described supporting mechanism 2 front in parallel is connected in parallel between base 1 and back timber 5 with rear supporting mechanism 3 in parallel, and its lower end symmetry is arranged on base 1, and the top of front supporting mechanism 2 in parallel, rear supporting mechanism 3 in parallel is all connected with back timber 5.The pressure that described back screen device 4 is mainly used in bearing hydraulic support horizontal force and is caving balkstone, prevents the spoil of erecting dense individual props from entering the below of hydraulic support, to ensure personnel and equipment work safety below hydraulic support; Described back screen device 4 can also bear the horizontal applied force from back timber 5 simultaneously, plays the stability improving Roof Control by Means of Hydraulic Supports; Described back screen device 4 is positioned at the rear end of described supporting mechanism 3 rear in parallel, and its front end is connected by hinge with base 1, and its top is connected by hinge with back timber 5.Be provided with top side backplate 501 in the both sides of back timber 5, be embedded with extensible canopy 6 in the inside of back timber 5, for extending the working space of hydraulic support, described back timber 5 is connected with extensible canopy 6 by extensible canopy jack 601; Face guard 602 is provided with at the head of extensible canopy 6.Described face guard 602 and top side backplate 501 are for playing gear cash, anti-down tune frame and extending the effect of hydraulic support left and right sides to support work scope.
Described back screen device forms by connecting otic placode 401, front angular adjustment jack 402, caving shield 403, rear angular adjustment jack 404, river bottom protection jack 405, rear side backplate 406 and river bottom protection plate 407, the lower end of described connection otic placode 401 is connected by hinge with end junction plate 102, and its upper end is provided with slippage bearing pin 4011 and is connected by slip hinge with caving shield 403; The two ends of described front angular adjustment jack 402 are connected by hinge with end junction plate 102, river bottom protection plate 407 respectively; The top of described caving shield 403 is connected by hinge with back timber 5, and reinforcement gusset inside caving shield 403 is provided with long waist shaped hole 4031 and lower long waist shaped hole 4032; The upper end of described rear angular adjustment jack 404 is connected by hinge with caving shield 403, and the lower end empty set of rear angular adjustment jack 404 is on the slippage bearing pin 4011 connecting otic placode 401; The upper end of described river bottom protection jack 405 is connected by hinge with caving shield 403, its lower end is provided with slippage optical axis 4051, and the two ends of described slippage optical axis 4051 are placed in the lower long waist shaped hole 4032 of caving shield 403, river bottom protection plate 407 is connected by hinge with slippage optical axis 4051; Rear side backplate 406 is positioned at the both sides of caving shield 403.
As shown in Figure 4 and Figure 5, described supporting mechanism 2 front in parallel is made up of fixed base plate 201, movable panel 203 and three support chain 202 be connected between fixed base plate 201 and movable panel 203.Described fixed base plate 201 is connected with base 1; Three described support chain 202 are connected in parallel between fixed base plate 201, movable panel 203; Three described support chain 202 are the Series Sheet open chain of RPC structure; Described movable panel 203 is connected with back timber 5.Described support chain 202 is made up of hinged ear seat 2021, double acting hydraulic cylinder 2022 and two damping Connection Block 2023.Described hinged ear seat 2021 is arranged on fixed base plate 201; The lower end of described double acting hydraulic cylinder 2022 is connected by revolute pair R with hinged ear seat 2021, its upper end is connected by cylindrical pair C with two damping Connection Block 2023, described double acting hydraulic cylinder 2022 to stretch double acting hydraulic cylinder, as the moving sets P in parallel institution RPC for two-stage; And the axis of the axis of described revolute pair R and described cylindrical pair C is parallel to each other, the axes normal of described moving sets P is in the axis of described revolute pair R.
As shown in Figure 6, described two damping Connection Blocks 2023 comprise multidigit fixed head 20231, damper 20232 and meta bearing pin 20233, described meta bearing pin 20233 is positioned at the centre position of multidigit fixed head 20231 and is connected with multidigit fixed head 20231, described damper 20232 has two and is arranged symmetrically in the both sides of meta bearing pin 20233, and the two ends of damper 20232 are all connected with multidigit fixed head 20231 by hinge.
As shown in Figure 7, the axis of the hinge hole of three described support chain 202 bottom-hinged ear seats 2021 is that isosceles triangle is arranged, revolute pair R1 namely on three hinged ear seats 2021, the axis of R2, R3 form a little isosceles triangle, and two angle θ 1=θ 2 of described little isosceles triangle.
As shown in Figure 8, before described in supporting mechanism 2 in parallel, the axis of the meta bearing pin 20233 at three described support chain 202 tops is that isosceles triangle is arranged, the axis of cylindrical pair C1, C2, C3 namely on three two damping Connection Blocks 2023 forms a large isosceles triangle, and two angle Ф 1=Ф 2 of described large isosceles triangle.
During use, the collapsing length of the double acting hydraulic cylinder 2022 of three support chain 202 of front supporting mechanism 2 in parallel and rear supporting mechanism in parallel 3 is regulated according to the actual needs in support works face, back timber 5 is risen, withstand top country rock, regulate extensible canopy jack 601 again, extensible canopy 6 is stretched out, extend the working space of hydraulic support, and then regulate top side backplate 501 and face guard 602, make it launch respectively; Then the collapsing length of angular adjustment jack 404 after regulating, slippage bearing pin 4011 moves down, back screen device 4 is launched backward, withstand rear portion country rock, again rear side is protected 406 expansion, and then regulate the collapsing length of river bottom protection jack 405, slippage optical axis 4051 is moved down, realize the translation of river bottom protection plate 407, extend the working space of back screen device, when slippage optical axis 4051 is displaced downwardly to lower long waist shaped hole 4032 lowermost end of caving shield 403, under front angular adjustment jack 402 telescopic action, realize the swing of river bottom protection plate 407 around slippage optical axis 4051 axis; Last under this duty, the push rod 101 of base 1 is stretched out, realizes the function of pushing and sliding drag conveyor.
When needs mobile hydraulic support, regulate the collapsing length of double acting hydraulic cylinder 2022, extensible canopy jack 601, rear angular adjustment jack 404, front angular adjustment jack 402, make that back timber 5 declines, extensible canopy 6 is retracted, back screen device 4 is regained, rear backplate 407 is retracted, pack up top side backplate 501 again, face guard 602, rear side protect 406, the push rod 101 of last base 1 is retracted, and realizes moving holder function.
More than show and describe general principle of the present invention, principal character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a freedom degree parallel connection hydraulic support, comprise base, front supporting mechanism in parallel, rear supporting mechanism in parallel, back screen device, back timber and extensible canopy, it is characterized in that: described pan frontward end face is arcwall face, and be provided with push rod in the centre position of base, be provided with end junction plate in the rear end of base; Described supporting mechanism front in parallel is identical with the structure of rear supporting mechanism in parallel, and its lower end symmetry is arranged on base, and the top of front supporting mechanism in parallel, rear supporting mechanism in parallel is all connected with back timber; Described back screen device is positioned at the rear end of rear supporting mechanism in parallel, and the front end of back screen device is connected by hinge with base, and the top of back screen device is connected by hinge with back timber; Be provided with top side backplate in the both sides of back timber, be embedded with extensible canopy in the inside of back timber, back timber is connected with extensible canopy by extensible canopy jack; Face guard is provided with at the head of extensible canopy;
Described back screen device forms by connecting otic placode, front angular adjustment jack, caving shield, rear angular adjustment jack, river bottom protection jack, rear side backplate and river bottom protection plate, the lower end of described connection otic placode is connected by hinge with end junction plate, and its upper end is provided with slippage bearing pin and is connected by slip hinge with caving shield; The two ends of described front angular adjustment jack are connected by hinge with end junction plate, river bottom protection plate respectively; The top of described caving shield is connected by hinge with back timber, and reinforcement gusset inside caving shield is provided with long waist shaped hole and lower long waist shaped hole; The upper end of described rear angular adjustment jack is connected by hinge with caving shield, and the lower end empty set of rear angular adjustment jack is on the slippage bearing pin connecting otic placode; The upper end of described river bottom protection jack is connected by hinge with caving shield, and its lower end is provided with slippage optical axis, and the two ends of described slippage optical axis are placed in the lower long waist shaped hole of caving shield, and river bottom protection plate is connected by hinge with slippage optical axis; Rear side backplate is positioned at the both sides of caving shield.
2. freedom degree parallel connection hydraulic support according to claim 1, it is characterized in that: described supporting mechanism front in parallel and rear supporting mechanism in parallel form by fixed base plate, movable panel and three support chain be connected between fixed base plate and movable panel, and described fixed base plate and base are connected; Described movable panel and back timber are connected; Described support chain is made up of hinged ear seat, double acting hydraulic cylinder and two damping Connection Block, described hinged ear seat is arranged on fixed base plate, the lower end of double acting hydraulic cylinder is connected by hinge with hinged ear seat, and its upper end is connected by cylindrical pair with two damping Connection Block; Described two damping Connection Blocks comprise multidigit fixed head, damper and meta bearing pin, described meta bearing pin is positioned at the centre position of multidigit fixed head and is connected with multidigit fixed head, described damper has two and is arranged symmetrically in the both sides of meta bearing pin, and the two ends of damper are all connected with multidigit fixed head by hinge.
3. freedom degree parallel connection hydraulic support according to claim 2, it is characterized in that: the axis of the meta bearing pin at three described support chain tops is that isosceles triangle is arranged, article three, the axis of the hinge hole of support chain bottom-hinged ear seat is also arranged in isosceles triangle, and the axis being parallel of the meta bearing pin of same support chain upper top is in the axis of the hinge hole of bottom-hinged ear seat.
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| CN201410160318.6A CN103899343B (en) | 2014-04-21 | 2014-04-21 | Freedom degree parallel connection hydraulic support |
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| CN201410160318.6A CN103899343B (en) | 2014-04-21 | 2014-04-21 | Freedom degree parallel connection hydraulic support |
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| CN103899343B true CN103899343B (en) | 2015-10-07 |
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| CN203769820U (en) * | 2014-04-21 | 2014-08-13 | 安徽理工大学 | Three-freedom-degree parallel hydraulic support |
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|---|---|
| CN103899343A (en) | 2014-07-02 |
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