CN111456793A - Bottom lifting mechanism and hydraulic support - Google Patents
Bottom lifting mechanism and hydraulic support Download PDFInfo
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- CN111456793A CN111456793A CN202010299411.0A CN202010299411A CN111456793A CN 111456793 A CN111456793 A CN 111456793A CN 202010299411 A CN202010299411 A CN 202010299411A CN 111456793 A CN111456793 A CN 111456793A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 40
- 238000005452 bending Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/08—Advancing mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/26—Adaptations or arrangements of pistons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention provides a bottom lifting mechanism and a hydraulic support, wherein the bottom lifting mechanism comprises: the bottom lifting jack comprises a piston rod, a first circular arc structure and a first pin hole are arranged on the piston rod, the first circular arc structure is positioned at the end part of the piston rod, the first pin hole penetrates through the piston rod along the extending direction vertical to the piston rod, and the first pin hole is positioned at one end, close to the first circular arc structure, of the piston rod; the base is provided with a sleeve structure, the bottom lifting jack is arranged in the sleeve structure and can move along the axial direction of the sleeve structure; the bottom lifting frame is arranged on the base and is positioned above the sleeve structure, and a top plate of the bottom lifting frame is provided with a second arc structure; the first arc structure is in contact with the second arc structure. The bottom lifting mechanism of the invention avoids the defect that the sliding shoe structure is easy to fall off in the base slideway on one hand, and avoids the damage of the pin shaft caused by the bending of the pin shaft in the operation of the bottom lifting jack due to overlarge gap at the hinged position of the existing sleeve type mechanism on the other hand.
Description
Technical Field
The invention relates to the technical field of coal mine equipment, in particular to a bottom lifting mechanism and a hydraulic support.
Background
In the prior art, common bottom lifting jacks mainly have two structural forms, namely a sliding shoe type structure and a sleeve type structure. The failure point of the sliding shoe type structure is mainly that the sliding shoe structure of the bottom lifting jack is easy to fall off in the base slideway. And the bottom lifting jack is connected with the base through a pin shaft in a sleeve type structure, and the top is connected with the bottom lifting cover plate through a bolt. The bottom lifting jack cylinder runs up and down in the sleeve of the base. The main fault point of the structure is that a larger gap exists between the cylinder barrel of the bottom lifting jack and the base sleeve. And a gap also exists between the pin shaft hole on the sleeve and the pin shaft. Due to the clearance fit relationship, the pin shaft is stressed and bent in the operation process of the bottom lifting jack, the upper bolt is deformed, and a pipe joint rubber pipe of the bottom lifting jack is interfered with the base sleeve, so that faults such as damage, falling and the like are caused.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, a first aspect of the invention provides a bottom lifting mechanism.
A second aspect of the invention provides a hydraulic mount.
In view of the above, a first aspect of the present invention provides a bottom lifting mechanism, including: the bottom lifting jack comprises a piston rod, a first circular arc structure and a first pin hole are arranged on the piston rod, the first circular arc structure is located at the end of the piston rod, the first pin hole penetrates through the piston rod along the extending direction perpendicular to the piston rod, and the first pin hole is located at one end, close to the first circular arc structure, of the piston rod; the base is provided with a sleeve structure, the bottom lifting jack is arranged in the sleeve structure and can move along the axial direction of the sleeve structure; the bottom lifting frame is arranged on the base and is positioned above the sleeve structure, and a top plate of the bottom lifting frame is provided with a second arc structure; wherein, the first circular arc structure is contacted with the second circular arc structure.
The bottom lifting mechanism provided by the invention comprises a bottom lifting jack, a base and a bottom lifting frame. The bottom lifting jack can move axially along the sleeve structure of the base, so that the defect that the sliding shoes easily fall off in the base slide ways when the sliding shoe structure is adopted is overcome, and the welding process of the base slide ways is not needed. The piston rod is hinged with the bottom lifting frame through the first pin hole, the first arc structure at the top end of the piston rod is in contact with the second arc structure on the top plate of the bottom lifting frame, and the damage caused by the fact that the hinge joint of the existing sleeve type bottom lifting jack is too large in gap, caused by the fact that a pin shaft is stressed and bent in the operation process of the bottom lifting jack, is avoided.
In addition, according to the bottom lifting mechanism in the above technical solution provided by the present invention, the following additional technical features may also be provided:
in the above technical solution, further, the bottom lifting mechanism further includes a push rod. The push rod is located the base along length direction's central line, and the base is stretched out to the one end of push rod, and the sleeve structure is located the push rod top.
In this solution, the push rod is located on the center line of the base along the length direction, and one end of the push rod extends out of the base to connect with the conveyor. The pusher is used on the one hand for pushing the conveyor and on the other hand for the movement of the hydraulic support itself. And the sleeve structure is positioned above the push rod, and under the condition that the bottom lifting jack works, the cylinder body of the bottom lifting jack continuously descends along the sleeve structure and forms frictional contact with the push rod without deviation, and the sleeve structure plays a role in guiding.
In any of the above technical solutions, further, the base further includes: the gap bridge plate is arranged on the base, is opposite to the bottom lifting jack and is positioned above the push rod; the first rib plate is perpendicular to the gap bridge plate and connected with the gap bridge plate; the second rib plate is perpendicular to the gap bridge plate and connected with the gap bridge plate; the first rib plate and the second rib plate are located on the same side of the bridge plate, and the sleeve structure is located between the first rib plate and the second rib plate.
In the technical scheme, the bridge plate is respectively connected with the first rib plate and the second rib plate and is used as a part of a supporting structure of the sleeve structure.
In any of the above technical solutions, further, the base further includes: the first cover plate is perpendicular to the gap bridge plate and is connected with the gap bridge plate; the second cover plate is perpendicular to the gap bridge plate and is connected with the gap bridge plate; the first cover plate and the second cover plate are arranged at intervals along the axial direction of the sleeve structure, the first cover plate and the second cover plate are located between the first rib plate and the second rib plate, the first cover plate is provided with a first through hole, the second cover plate is provided with a second through hole, and the sleeve structure penetrates through the first through hole and the second through hole and is connected with the first through hole and the second through hole.
In the technical scheme, the sleeve structure penetrates through the first through hole and the second through hole to be connected with the first cover plate and the second cover plate, and the first cover plate and the second cover plate are respectively connected with the bridge plate, the first rib plate and the second rib plate. According to the arrangement, the gap bridge plate, the first rib plate, the second rib plate, the first cover plate, the second cover plate and the sleeve structure are enclosed into a box type structure, so that the part of the base is compact and firm in structure, and is better matched with the operation of the bottom lifting jack.
In any of the above technical solutions, further, the base further includes: the first lug plate is perpendicular to the gap bridge plate and is connected with the gap bridge plate; the first lug plate and the second lug plate are positioned on the same side of the gap bridge plate, and the bottom lifting jack is positioned between the first lug plate and the second lug plate; and the second pin hole penetrates through the first lug plate and the second lug plate.
In this technical scheme, set up first otic placode and second otic placode on the base to be equipped with and run through the second pinhole on first otic placode and second otic placode, make the base with lift the underframe frame and be connected through the second pinhole.
In any one of the above technical solutions, the bottom lifting frame further includes: the side plates are connected with the top plate and positioned on two sides of the top plate, and the side plates are provided with third pin holes; the third otic placode is connected with the roof, is located the both sides of roof, and third otic placode and curb plate enclose the week side of locating the roof, and the third otic placode is equipped with the fourth pinhole.
In this technical scheme, curb plate and third otic placode enclose the week side of locating the roof, and the third pinhole on the curb plate is used for lifting the bottom jack and lifting the articulated of underframe frame, and the fourth pinhole on the third otic placode is used for lifting the articulated of underframe frame and base to lifting the one end that the bottom jack during operation realized driving the base through lifting the underframe frame, accomplishing lifting of base.
In any of the above technical solutions, further, a third arc structure is disposed at the bottom of the bottom lifting jack, and the third arc structure is in contact with the push rod based on the operation of the bottom lifting jack.
In the technical scheme, when the bottom lifting jack works, the piston rod and the cylinder body slide relatively, the cylinder body continuously descends, the third arc structure at the bottom of the bottom lifting hydraulic cylinder is in friction contact with the upper surface of the push rod, and large impact caused by contact is avoided.
In any of the above technical solutions, further, the first ear plate and the second ear plate are respectively provided in pairs.
In this technical scheme, set up first otic placode and second otic placode in pairs respectively, make the articulated firm more, reliable of here.
In any of the above technical solutions, further, the bottom lifting mechanism further includes: the first pin shaft penetrates through the first pin hole and the third pin hole and is used for hinging the bottom lifting jack with the bottom lifting frame; and the second pin shaft penetrates through the second pin hole and the fourth pin hole and is used for lifting the bottom frame and hinging the bottom frame with the base.
In the technical scheme, the first pin shaft penetrates through the first pin hole in the bottom lifting jack and the third pin hole in the bottom lifting frame, so that the bottom lifting jack is hinged to the bottom lifting frame. The second pin shaft penetrates through a second pin hole in the base and a fourth pin hole in the bottom lifting frame, and the base is hinged with the bottom lifting frame. The bottom lifting jack is arranged in such a way that the adaptability of the base, the bottom lifting frame and the bottom lifting jack is better, and when the bottom lifting jack works, one end of the base is driven by the bottom lifting frame, so that the bottom lifting function is realized.
A second aspect of the present invention provides a hydraulic mount, including: a top beam and a column; and the bottom lifting mechanism in any of the above technical schemes; wherein, the upright post is connected with the top beam and the bottom lifting mechanism.
In the technical scheme, the hydraulic support comprises the bottom lifting mechanism in any one technical scheme, so that the hydraulic support has all the beneficial effects of the bottom lifting mechanism in any one technical scheme, and the service life of the hydraulic support is further prolonged.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a bottom raising mechanism according to an embodiment of the present invention;
FIG. 2 is a top view of the lift-bottom mechanism shown in FIG. 1;
FIG. 3 is a cross-sectional view of the bottom lift mechanism of FIG. 2 taken along the line A-A;
FIG. 4 is a schematic structural diagram of a base according to an embodiment of the present invention;
FIG. 5 is a top view of the base shown in FIG. 4;
FIG. 6 is a cross-sectional view taken along the line B-B of the base shown in FIG. 5;
FIG. 7 is a schematic structural diagram of a first cover plate according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a bottom lifting jack according to an embodiment of the present invention;
FIG. 9 is a front view of a bottom lift frame according to one embodiment of the present invention;
FIG. 10 is a cross-sectional view of the underframe of FIG. 9 taken along the line C-C;
fig. 11 is a top view of the bottom lift frame of fig. 9.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 11 is:
1, a bottom lifting mechanism, 100 a bottom lifting jack, 102 a first arc structure, 104 a first pin hole, 106 a third arc structure, 200 a base, 202 a sleeve structure, 204 a bridge plate, 206 a first rib plate, 208 a second rib plate, 210 a first cover plate, 212 a second cover plate, 214 a first through hole, 216 a first lug plate, 218 a second lug plate, 220 a second pin hole, 300 a bottom lifting frame, 302 a top plate, 304 a second arc structure, 306 a side plate, 308 a third pin hole, 310 a third lug plate, 312 a fourth pin hole, a lifting ring 314, 400 a push rod, 500 a first pin shaft and 600 a second pin shaft.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
A bottom lift mechanism 1 and hydraulic mount provided according to some embodiments of the present invention will be described below with reference to fig. 1 to 11.
Example one
As shown in fig. 1, a bottom lift mechanism 1 according to a first embodiment of the present invention includes: a bottom lifting jack 100, a base 200 and a bottom lifting frame 300.
As shown in fig. 8, the bottom-lifting jack 100 includes a piston rod, and a first circular arc structure 102 and a first pin hole 104 are disposed on the piston rod, wherein the first circular arc structure 102 is located at an end of the piston rod, the first pin hole 104 penetrates through the piston rod along a direction perpendicular to an extending direction of the piston rod, and the first pin hole 104 is located at an end of the piston rod close to the first circular arc structure 102.
As shown in fig. 1 to 3, the base 200 is provided with a sleeve structure 202, the bottom-raising jack 100 is disposed in the sleeve structure 202, and the bottom-raising jack 100 can move along the axial direction of the sleeve structure 202.
The bottom lifting frame 300 is disposed on the base 200 and above the sleeve structure 202, and a top plate 302 of the bottom lifting frame 300 has a second arc structure 304.
The first arc structure 102 is in contact with the second arc structure 304.
Specifically, the bottom-lifting jack 100 can axially move along the sleeve structure 202 of the base 200, so that the defect that a sliding shoe is easy to fall off in a sliding way of the base 200 when a sliding shoe structure is adopted is avoided, and a welding procedure of the sliding way of the base 200 is not needed. The piston rod is hinged with the bottom lifting frame 300 through the first pin 500, and the first arc structure 102 at the top end of the piston rod is in contact with the second arc structure 304 on the top plate 302 of the bottom lifting frame 300, so that the damage caused by the bending of the pin due to the stress of the pin in the operation process of the bottom lifting jack 100 due to the overlarge gap at the hinged position of the existing sleeve type bottom lifting jack 100 is avoided.
Example two
As shown in fig. 1 to 3, in the above embodiment, further, the bottom lift mechanism 1 further includes a push rod 400. The push rod 400 is located on the centerline of the base 200 along the length direction, one end of the push rod 400 extends out of the base 200, and the sleeve structure 202 is located above the push rod 400.
In this embodiment, the push rod 400 is positioned on the center line of the base 200 in the length direction, and one end thereof protrudes out of the base 200 to be connected to the conveyor. The pusher 400 is used on the one hand for pushing the conveyor and on the other hand for the movement of the hydraulic support itself. The sleeve structure 202 is located above the push rod 400, and when the bottom lifting jack 100 works, the cylinder body of the bottom lifting jack 100 continuously descends along the sleeve structure 202 to form friction contact with the push rod 400 without deviation, and the sleeve structure 202 plays a guiding role.
Further, as shown in fig. 4 to 6, the base 200 further includes: bridge plate 204, first rib 206, and second rib 208.
The bridge plate 204 is arranged on the base 200, is opposite to the bottom lifting jack 100 and is positioned above the push rod 400; the first rib plate 206 is perpendicular to the bridge plate 204 and connected with the bridge plate 204; the second rib plate 208 is perpendicular to the bridge plate 204 and connected with the bridge plate 204; wherein first rib 206 and second rib 208 are located on the same side of gap bridge 204, and sleeve structure 202 is located between first rib 206 and second rib 208.
In this embodiment, bridge 204 is connected to first rib 206 and second rib 208, respectively, as part of the support structure for sleeve structure 202.
Further, as shown in fig. 4, 6 and 7, the base 200 further includes: a first cover plate 210 and a second cover plate 212.
The first cover plate 210 is perpendicular to the bridge plate 204 and connected with the bridge plate 204; the second cover plate 212 is perpendicular to the bridge plate 204 and connected with the bridge plate 204; the first cover plate 210 and the second cover plate 212 are arranged at intervals along the axial direction of the sleeve structure 202, the first cover plate 210 and the second cover plate 212 are located between the first rib plate 206 and the second rib plate 208, the first cover plate 210 is provided with a first through hole 214, the second cover plate 212 is provided with a second through hole, and the sleeve structure 202 penetrates through the first through hole 214 and the second through hole and is connected with the first through hole 214 and the second through hole.
In this embodiment, sleeve structure 202 is coupled to first and second cover plates 210 and 212 through first and second through holes 214 and 212, and first and second cover plates 210 and 212 are coupled to bridge plate 204, first rib 206, and second rib 208, respectively. By means of the arrangement, the bridge plate 204, the first rib plate 206, the second rib plate 208, the first cover plate 210, the second cover plate 212 and the sleeve structure 202 are enclosed to form a box-type structure, so that the part of the base 200 is compact and firm, and is better matched with the operation of the bottom lifting jack 100.
Further, as shown in fig. 4 to 6, the base 200 further includes: a first ear plate 216, a second ear plate 218, and a second pin hole 220.
The first ear plate 216 is perpendicular to the bridge plate 204 and connected with the bridge plate 204; the second ear plate 218 is perpendicular to the bridge plate 204 and connected to the bridge plate 204, the first ear plate 216 and the second ear plate 218 are located on the same side of the bridge plate 204, and the bottom-raising jack 100 is located between the first ear plate 216 and the second ear plate 218; the second pin hole 220 extends through the first ear plate 216 and the second ear plate 218.
In this embodiment, the base 200 is provided with a first ear plate 216 and a second ear plate 218, and a second pin hole 220 penetrating the first ear plate 216 and the second ear plate 218, so that the base 200 and the bottom lifting frame 300 are connected through the second pin hole 220.
Further, as shown in fig. 9 to 11, the bottom lifting frame 300 further includes: a side panel 306 and a third ear panel 310.
The side plate 306 is connected with the top plate 302 and located on two sides of the top plate 302, and the side plate 306 is provided with a third pin hole 308; the third ear plate 310 is connected to the top plate 302 and located on both sides of the top plate 302, the third ear plate 310 and the side plate 306 are disposed around the top plate 302, and the third ear plate 310 is provided with a fourth pin hole 312.
In this embodiment, the side plate 306 and the third ear plate 310 are disposed around the top plate 302, the third pin hole 308 on the side plate 306 is used for hinging with the bottom-lifting jack 100 and the bottom-lifting frame 300, and the fourth pin hole 312 on the third ear plate 310 is used for hinging the bottom-lifting frame 300 with the base 200, so that when the bottom-lifting jack 100 works, the bottom-lifting frame 300 is used to drive one end of the base 200, thereby completing the lifting of the base 200.
Further, as shown in fig. 3 and 8, the bottom of the bottom-lifting jack 100 is provided with a third arc structure 106, and the third arc structure 106 is in contact with the push rod 400 based on the operation of the bottom-lifting jack 100.
In this embodiment, when the bottom-lifting jack 100 works, the piston rod and the cylinder body slide relatively, the cylinder body descends continuously, and the third arc structure 106 at the bottom of the bottom-lifting hydraulic cylinder forms a friction contact with the upper surface of the push rod 400, so as to avoid a large impact caused by the contact.
Further, as shown in fig. 4 and 5, the first and second ear plates 216 and 218 are respectively provided in pairs.
In this embodiment, the first ear plate 216 and the second ear plate 218 are provided in pairs, respectively, to provide a more secure and reliable hinge therebetween.
EXAMPLE III
As shown in fig. 1 and 10, in any of the above embodiments, further, the bottom raising mechanism 1 further includes: a first pin 500 and a second pin 600.
The first pin 500 passes through the first pin hole 104 and the third pin hole 308, and is used for hinging the bottom lifting jack 100 with the bottom lifting frame 300; the second pin 600 passes through the second pin hole 220 and the fourth pin hole 312, and is used for hinging the bottom lifting frame 300 with the base 200.
In this embodiment, the first pin 500 passes through the first pin hole 104 on the bottom lifting jack 100 and the third pin hole 308 on the bottom lifting frame 300, so as to realize the hinge joint between the bottom lifting jack 100 and the bottom lifting frame 300. The second pin 600 passes through the second pin hole 220 on the base 200 and the fourth pin hole 312 on the bottom lifting frame 300, and the base 200 and the bottom lifting frame 300 are hinged. By the arrangement, the base 200, the bottom lifting frame 300 and the bottom lifting jack 100 have better adaptability, and when the bottom lifting jack 100 works, one end of the base 200 is driven by lifting the bottom frame 300, so that the bottom lifting function is realized.
Example four
A fourth embodiment of the present invention provides a hydraulic mount including: a top beam and a column, and a bottom lifting mechanism 1 as in any of the above embodiments.
Wherein, the upright post is connected with the top beam and the bottom lifting mechanism 1.
In this embodiment, since the hydraulic support includes the bottom lifting mechanism 1 in any one of the above embodiments, the hydraulic support has all the advantages of the bottom lifting mechanism 1 in any one of the above embodiments, and the service life of the hydraulic support is further prolonged.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As shown in fig. 1 to 3, in an embodiment, the hydraulic bracket of the present invention includes a bottom-lifting jack 100, a base 200, a bottom-lifting frame 300, a push rod 400, a first pin 500, and a second pin 600.
Specifically, as shown in fig. 1, the base 200 is connected to the bottom lifting frame 300 by a second pin 600, and the bottom lifting jack 100 is connected to the bottom lifting frame 300 by a first pin 500. The push rod 400 is located in the middle of the base 200, on the one hand pushing the scraper conveyor and on the other hand, when the hydraulic support itself moves forward, the cylinder bottom of the bottom-raising jack 100 contacts the top surface of the push rod 400.
As shown in fig. 3, a sleeve structure 202 is provided on the base 200 for the track operation of the bottom-lifting jack 100, and the cylinder of the bottom-lifting jack 100 moves along the inner wall of the sleeve structure 202, so as to have a guiding function. The top of the bottom lifting jack 100 is provided with a first arc structure 102, and the first arc structure 102 makes arc surface contact with a second arc structure 304 on a top plate 302 of the bottom lifting frame 300.
As shown in fig. 4 to 6, the base 200 is further provided with a first rib 206 and a second rib 208, and a first cover plate 210 and a second cover plate 212 are arranged between the first rib 206 and the second rib 208. The first cover plate 210 has a first through hole 214, and the second cover plate 212 has a second through hole. Sleeve structure 202 passes through first and second through holes 214 and 212, is welded to first and second cover plates 210 and 212, and is welded to first and second webs 206 and 208.
Ribs can be added between the first cover plate 210 and the second cover plate 212 to make the structure more firm.
The base 200 is further provided with a bridge plate 204, and the first cover plate 210 and the second cover plate 212 are connected with the bridge plate 204 in a welding manner. The first lug plate 216 and the second lug plate 218 are arranged on the bridge plate 204, the first lug plate 216 and the second lug plate 218 are respectively arranged in pairs, 4 pieces in total are welded on the bridge plate 204, and the first lug plate 216 and the second lug plate 218 are provided with second pin holes 220 for fixing the second pin shaft 600.
In addition, the structure is more robust by adding cover plates between the first ear plates 216 and between the second ear plates 218, respectively.
As shown in fig. 1, 3 and 8, the piston rod of the bottom lifting jack 100 is provided with a first arc structure 102, which is in arc contact with the top plate 302 of the bottom lifting frame 300. The piston rod is provided with a first pin hole 104 for connection of the first pin 500. The bottom of the cylinder body is provided with a third arc structure 106 which is contacted with the top surface of the push rod 400 when the hydraulic support pushes the scraper conveyor or the hydraulic support moves forwards.
As shown in fig. 9 to 11, the bottom lifting frame 300 is provided with 2 side plates 306, 1 top plate 302, 2 third ear plates 310 and a hanging ring 314. The side plate 306 is provided with a third pin hole 308 for fixing the first pin 500. The top plate 302 is provided with a second arc structure 304 for making arc contact with the first arc structure 102 on the top of the bottom-lifting jack 100. The third ear plate 310 is provided with a fourth pin hole 312 for fixing the second pin 600.
As shown in fig. 1 to 3, during installation, the bottom lifting jack 100 and the bottom lifting frame 300 are connected together by the first pin 500, then the lifting ring 314 on the bottom lifting frame 300 is hung into the sleeve structure 202 on the base 200, and then the second pin 600 is used for fixing the bottom lifting frame 300 by the first pin hole 216 on the base 200 and the second pin hole 220 on the second pin hole 218, so that the installation is completed.
The top of the bottom lifting jack 100 of the hydraulic support provided by the embodiment adopts an arc structure, and is in contact with the arc surface of the top plate 302 of the bottom lifting frame 300. The bottom-lifting jack 100 prevents the connected first pin 500 from being damaged due to bending deformation during operation. The cylinder bottom of the bottom lifting jack 100 adopts a non-sliding shoe structure, the welding procedure of the slide way on the base 200 is not needed, and the bottom lifting jack 100 is prevented from falling out of the slide way. The sleeve structure 202 on the base 200, the bridge plate 204, the first cover plate 210, the second cover plate 212, the first rib plate 206 and the second rib plate 208 form a box body, and are welded and formed, so that the structure is firm.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, connections, disconnections, or integrations; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A bottom lifting mechanism is characterized by comprising:
the bottom lifting jack comprises a piston rod, and a first circular arc structure and a first pin hole are arranged on the piston rod, wherein the first circular arc structure is positioned at the end part of the piston rod, the first pin hole penetrates through the piston rod along the extending direction vertical to the piston rod, and the first pin hole is positioned at one end, close to the first circular arc structure, of the piston rod;
the base is provided with a sleeve structure, the bottom lifting jack is arranged in the sleeve structure, and the bottom lifting jack can move along the axial direction of the sleeve structure;
the bottom lifting frame is arranged on the base and is positioned above the sleeve structure, and a top plate of the bottom lifting frame is provided with a second arc structure;
wherein the first arc structure is in contact with the second arc structure.
2. The bottom lift mechanism of claim 1, further comprising:
the push rod is located on the central line of the base in the length direction, one end of the push rod extends out of the base, and the sleeve structure is located above the push rod.
3. The bottom lift mechanism of claim 2, wherein the base further comprises:
the gap bridge plate is arranged on the base, the gap bridge plate is arranged opposite to the bottom lifting jack, and the gap bridge plate is positioned above the push rod;
the first rib plate is perpendicular to the gap bridge plate and connected with the gap bridge plate;
the second rib plate is perpendicular to the gap bridge plate and connected with the gap bridge plate;
the first rib plate and the second rib plate are located on the same side of the bridge plate, and the sleeve structure is located between the first rib plate and the second rib plate.
4. The bottom lift mechanism of claim 3, wherein the base further comprises:
the first cover plate is perpendicular to the gap bridge plate and is connected with the gap bridge plate;
the second cover plate is perpendicular to the gap bridge plate and is connected with the gap bridge plate;
the first cover plate and the second cover plate are arranged at intervals along the axial direction of the sleeve structure, the first cover plate and the second cover plate are located between the first rib plate and the second rib plate, the first cover plate is provided with a first through hole, the second cover plate is provided with a second through hole, and the sleeve structure penetrates through the first through hole and the second through hole and is connected with the first through hole and the second through hole.
5. The bottom lift mechanism of claim 4, wherein the base further comprises:
the first lug plate is perpendicular to the gap bridge plate and is connected with the gap bridge plate;
the second lug plate is perpendicular to the gap bridge plate and connected with the gap bridge plate, the first lug plate and the second lug plate are positioned on the same side of the gap bridge plate, and the bottom lifting jack is positioned between the first lug plate and the second lug plate;
a second pin hole passing through the first and second ear plates.
6. The bottom lift mechanism of claim 5, wherein the bottom lift frame further comprises:
the side plates are connected with the top plate and positioned on two sides of the top plate, and the side plates are provided with third pin holes;
the third otic placode, the third otic placode with the roof is connected, is located the both sides of roof, third otic placode and curb plate enclose the week side of locating the roof, the third otic placode is equipped with the fourth pinhole.
7. The bottom lifting mechanism as claimed in claim 2, wherein the bottom of the bottom lifting jack is provided with a third arc structure, and the third arc structure is in contact with the push rod under the condition that the bottom lifting jack works.
8. The bottom lift mechanism of claim 5, wherein the first and second ear plates are each provided in pairs.
9. The bottom lift mechanism of claim 6, further comprising:
the first pin shaft penetrates through the first pin hole and the third pin hole and is used for hinging the bottom lifting jack with the bottom lifting frame;
and the second pin shaft penetrates through the second pin hole and the fourth pin hole and is used for hinging the bottom lifting frame with the base.
10. A hydraulic mount, comprising:
a top beam and a column; and
the bottom lifting mechanism of any one of claims 1 to 9;
wherein, the upright post is connected with the top beam and the bottom lifting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299411.0A CN111456793A (en) | 2020-04-16 | 2020-04-16 | Bottom lifting mechanism and hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299411.0A CN111456793A (en) | 2020-04-16 | 2020-04-16 | Bottom lifting mechanism and hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111456793A true CN111456793A (en) | 2020-07-28 |
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ID=71677251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010299411.0A Pending CN111456793A (en) | 2020-04-16 | 2020-04-16 | Bottom lifting mechanism and hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111456793A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914916A (en) * | 2021-10-11 | 2022-01-11 | 新能矿业有限公司 | Scalable floated fixed cylinder |
-
2020
- 2020-04-16 CN CN202010299411.0A patent/CN111456793A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914916A (en) * | 2021-10-11 | 2022-01-11 | 新能矿业有限公司 | Scalable floated fixed cylinder |
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