CN111453639A - Bottom lifting jack and hydraulic support - Google Patents
Bottom lifting jack and hydraulic support Download PDFInfo
- Publication number
- CN111453639A CN111453639A CN202010299111.2A CN202010299111A CN111453639A CN 111453639 A CN111453639 A CN 111453639A CN 202010299111 A CN202010299111 A CN 202010299111A CN 111453639 A CN111453639 A CN 111453639A
- Authority
- CN
- China
- Prior art keywords
- bottom lifting
- lifting jack
- piston rod
- arc structure
- cylinder body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
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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
- B66F13/00—Common constructional features or accessories
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention provides a bottom lifting jack and a hydraulic support, wherein the bottom lifting jack comprises: one end of the piston rod is provided with a first arc structure; the piston rod is arranged in the cylinder body and can slide relative to the cylinder body; the first arc structure is located outside the cylinder body and located at one end of the cylinder body, and a second arc structure is arranged at one end, far away from the first arc structure, of the cylinder body. According to the bottom lifting jack provided by the invention, the first arc structure is arranged at the end part of the piston rod outside the cylinder body, so that the top of the bottom lifting jack is in arc surface contact with the bottom lifting frame connected with the bottom lifting jack, and the damage of the hinged shaft of the bottom lifting jack and the bottom lifting frame caused by bending deformation due to stress is avoided. The end of the cylinder body, which is far away from the first arc structure, is provided with a second arc structure, so that the cylinder body can be better contacted with the push rod. When the bottom lifting jack works, the piston rod and the cylinder body slide relatively, and when the bottom of the cylinder body is in contact with the push rod, the bottom lifting function is realized.
Description
Technical Field
The invention relates to the technical field of coal mine equipment, in particular to a bottom lifting jack and a hydraulic support.
Background
In the prior art, the bottom lifting jack is hinged with the bottom lifting frame through a pin shaft, and when the bottom lifting jack works, the top of a piston rod of the bottom lifting jack is a plane and has a gap with the bottom lifting frame, so that the pin shaft is easily damaged due to stress deformation.
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 proposes a bottom lifting jack.
A second aspect of the present invention provides a hydraulic mount.
In view of the above, a first aspect of the present invention provides a bottom lifting jack, including: one end of the piston rod is provided with a first arc structure; the piston rod is arranged in the cylinder body and can slide relative to the cylinder body; wherein, first circular arc structure is located the outside of cylinder body, is located the one end of cylinder body, and the one end that first circular arc structure was kept away from to the cylinder body is equipped with the second circular arc structure.
The invention provides a bottom lifting jack which comprises a piston rod and a cylinder body. The first arc structure is arranged at the end part of the piston rod outside the cylinder body, so that the top of the bottom lifting jack is in arc surface contact with the bottom lifting frame connected with the bottom lifting jack, and the damage of the hinged shaft of the bottom lifting jack and the bottom lifting frame caused by bending deformation due to stress is avoided. The end of the cylinder body, which is far away from the first circular arc structure, is provided with a second circular arc structure, namely the bottom of the lifting jack is provided with the second circular arc structure, so that the cylinder body can be better contacted with the push rod. When the jack lifts the bottom, the piston rod and the cylinder body slide relatively, and when the bottom of the cylinder body is contacted with the push rod, the function of lifting the bottom is realized.
Specifically, when the bottom lifting jack works, the first arc structure is always in contact with the bottom lifting frame to form a circular arc surface, so that the stress deformation of the hinged shaft is avoided. The piston rod and the cylinder body slide relatively, and the cylinder body descends continuously until the piston rod and the cylinder body are in friction contact with the upper surface of the push rod. Due to the arrangement of the second arc structure, the impact of the contact part is reduced.
In addition, according to the bottom lifting jack in the above technical scheme provided by the invention, the following additional technical features can be provided:
in the above technical solution, further, the bottom lifting jack further includes: the first pin hole is arranged on the piston rod and is positioned at one end of the piston rod close to the first arc structure, and the first pin hole penetrates through the piston rod along the extending direction vertical to the piston rod; and the rubber tube connector is arranged on the piston rod along the extending direction vertical to the piston rod and is positioned at one end of the piston rod close to the first arc structure.
In this technical scheme, set up first pinhole and make first pinhole run through in the piston rod along the extending direction of perpendicular to piston rod at the piston rod near the one end of first circular arc structure, the piston rod can with lift the underframe frame and articulate through first pinhole to further make lift the underframe frame and drive the effect that the base realized lifting the end. The rubber tube connector is arranged at a position close to the first arc structure along the extension direction of the piston rod, when the bottom lifting jack works, the cylinder body moves along the axial direction of the base sleeve structure, the rubber tube connector is always exposed outside the sleeve structure, the manual operation space is large, and the connection of the rubber tube is facilitated.
In any of the above technical solutions, further, the cross section of the cylinder body is shaped as a circular ring.
In the technical scheme, the cross section of the cylinder body is in a circular ring shape, namely the cylinder body is in a cylindrical structure, and the piston rod is in a cylindrical structure. Therefore, the cylinder body of the bottom lifting jack can always move along the axial direction of the sleeve structure in the sleeve structure of the base, the defect that the cylinder body is easy to fall off in a base slideway by adopting a sliding shoe structure is avoided, the structure is simplified, and the bottom lifting jack is smooth in working.
A second aspect of the present invention provides a hydraulic mount, including: push rod and the jack that lifts to bottom in any one above-mentioned technical scheme. And the push rod is arranged opposite to the second arc structure of the bottom lifting jack.
In this technical scheme, because hydraulic support includes the jack of lifting the bottom in any one above-mentioned technical scheme, therefore this hydraulic support has the whole beneficial effect of the jack of lifting the bottom in any one above-mentioned technical scheme, has further improved hydraulic support's life. The push rod and the second circular arc structure of the bottom lifting jack are arranged oppositely, namely the push rod is arranged below the bottom lifting jack and used for pushing the conveyor on one hand and moving the hydraulic support on the other hand.
In the above technical solution, further, the hydraulic support further includes: a base; the push rod is positioned on the central line of the base along the length direction, and one end of the push rod extends out of the base; under the condition of lifting the bottom jack to work, the second arc structure is in contact with the upper surface of the push rod.
In this technical scheme, hydraulic support still includes the base. The push rod is positioned on the center line of the base along the length direction, and one end of the push rod extends out of the base to be connected with the conveyor. And the bottom lifting jack is positioned above the push rod, under the condition that the bottom lifting jack works, the piston rod and the cylinder body slide relatively, and the cylinder body continuously descends until the second arc structure and the upper surface of the push rod form frictional contact, so that large impact caused by contact is avoided.
In any of the above technical solutions, further, the hydraulic support further includes: and the bottom lifting frame is positioned above the base and is respectively hinged with the base and the hydraulic jack.
In the technical scheme, the bottom lifting frame is hinged with the bottom lifting jack, and is hinged with the base, so that the bottom lifting jack drives one end of the base by lifting the bottom frame when working, and the bottom lifting function is realized.
In any of the above technical solutions, further, the bottom lifting frame includes: a top plate; 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 second pin holes; the ear plates are connected with the top plate and located on two sides of the top plate, the ear plates and the side plates are arranged on the periphery of the top plate in a surrounding mode, and the ear plates are provided with third pin holes.
In this technical scheme, the bottom lifting frame includes roof, curb plate and otic placode. Specifically, the side plate and the lug plate are arranged around the top plate, the second pin hole in the side plate is used for being hinged with the bottom lifting jack and the bottom lifting frame, and the third pin hole in the lug plate is used for being hinged with the bottom lifting frame and the base. Therefore, when the bottom lifting jack works, one end of the base is driven by lifting the bottom frame, and the lifting of the base is completed.
In any of the above technical solutions, further, the base is provided with a sleeve structure, the sleeve structure is located above the push rod, and the bottom lifting jack is located inside the sleeve structure and can move along the axial direction of the sleeve structure.
In the technical scheme, the sleeve structure of the base is positioned above the push rod, and the bottom lifting jack can move axially along the sleeve structure in the sleeve structure without contacting the push rod obliquely, namely the sleeve structure plays a role in guiding when the bottom lifting jack works, so that the bottom lifting jack works more stably, the defect that a sliding shoe structure is easy to fall off in a base slide way is avoided, and the structure is simplified.
Specifically, when the bottom lifting jack works, the cylinder body gradually moves downwards along the axial direction of the sleeve structure until the second arc structure at the bottom of the cylinder body is contacted with the push rod, and the cylinder body and the piston rod continue to slide relatively to lift one end of the base.
In any of the above technical solutions, further, a third arc structure is disposed on the lower surface of the top plate, and the third arc structure is in contact with the first arc structure.
In the technical scheme, the third arc structure is arranged on the lower surface of the top plate and is in contact with the first arc structure, so that the damage caused by bending deformation of a hinged shaft of the bottom lifting jack and the bottom lifting mechanism due to stress is avoided, and the service life of the hydraulic support is prolonged.
In any of the above technical solutions, further, the hydraulic support further includes: the first pin shaft penetrates through the first pin hole and the second pin hole and is used for hinging the bottom lifting jack with the bottom lifting frame; and the second pin shaft penetrates through the third 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 second pin hole in the bottom lifting frame, so that the bottom lifting jack is hinged to the bottom lifting frame. And the second pin shaft penetrates through a third pin hole in the bottom lifting frame and the base, so that the bottom lifting frame is hinged with the base. By the arrangement, when the bottom lifting jack works, the base and the bottom lifting frame can both realize follow-up, so that the bottom lifting function is realized.
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 view of a bottom lifting jack according to an embodiment of the present invention;
FIG. 2 is a top view of a portion of the hydraulic mount of one embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of the embodiment of FIG. 2;
FIG. 4 is a schematic structural diagram of a bottom lift frame according to an embodiment of the present invention;
FIG. 5 is a sectional view taken along the line B-B of the embodiment shown in FIG. 4.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 5 is:
100 lifting jacks, 102 piston rods, 104 cylinders, 1022 first circular arc structures, 1024 first pin holes, 1026 hose connectors, 1028 second circular arc structures, 200 push rods, 300 bases, 400 lifting bottom frames, 402 top plates, 4022 third circular arc structures, 404 side plates, 4042 second pin holes, 406 ear plates, 4062 third pin holes and 500 first pin shafts.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. 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 and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
A bottom-lifting jack 100 and hydraulic support provided in accordance with some embodiments of the present invention will now be described with reference to fig. 1-5.
Example one
As shown in fig. 1, a first embodiment of the present invention provides a bottom lifting jack 100, including: a piston rod 102 and a cylinder 104.
Wherein, one end of the piston rod 102 is provided with a first arc structure 1022; the piston rod 102 is arranged in the cylinder 104, and the piston rod 102 and the cylinder 104 can slide relatively; the first arc structure 1022 is located outside the cylinder 104 at one end of the cylinder 104, and a second arc structure 1028 is disposed at one end of the cylinder 104 away from the first arc structure 1022.
The present embodiment provides a bottom-lifting jack 100 including a piston rod 102 and a cylinder 104. The first arc structure 1022 is arranged at the end of the piston rod 102 outside the cylinder 104, so that the top of the bottom lifting jack 100 is in arc surface contact with the bottom lifting frame 400 connected with the top of the bottom lifting jack, and the damage of the hinged shaft of the bottom lifting jack 100 and the bottom lifting frame 400 caused by bending deformation due to stress is avoided. The end of the cylinder 104 away from the first arc structure 1022 is provided with a second arc structure 1028, that is, the bottom of the bottom-lifting jack 100 is provided with the second arc structure 1028, so that the cylinder 104 can be better contacted with the push rod 200. When the bottom lifting jack 100 works, the piston rod 102 and the cylinder body 104 slide relatively, and when the bottom of the cylinder body 104 is in contact with the push rod 200, the bottom lifting function is realized.
Specifically, when the bottom-lifting jack 100 is in operation, the first arc structure 1022 is always in arc surface contact with the bottom-lifting frame 400, so that the deformation of the hinge shaft due to stress is avoided. The piston rod 102 slides relative to the cylinder 104 and the cylinder 104 is lowered until it comes into frictional contact with the upper surface of the push rod 200. Due to the arrangement of the second arc structure 1028, the impact of the contact portion is reduced.
Example two
In the above embodiment, as shown in fig. 1, further, the bottom lifting jack 100 further includes a first pin hole 1024 and a hose interface 1026.
The first pin hole 1024 is disposed on the piston rod 102 and located at one end of the piston rod 102 close to the first arc structure 1022, and the first pin hole 1024 penetrates through the piston rod 102 along a direction perpendicular to the extending direction of the piston rod 102; the hose connector 1026 is disposed on the piston rod 102 along a direction perpendicular to the extending direction of the piston rod 102, and is located at an end of the piston rod 102 close to the first arc structure 1022.
As shown in fig. 1 to 3, in this embodiment, a first pin hole 1024 is disposed at an end of the piston rod 102 close to the first circular arc structure 1022, and the first pin hole 1024 penetrates through the piston rod 102 along a direction perpendicular to an extending direction of the piston rod 102, and the piston rod 102 and the bottom lifting frame 400 may be hinged through the first pin hole 1024, so that the bottom lifting frame 400 further drives the base 300 to achieve a bottom lifting effect. The rubber tube interface 1026 is arranged at a position close to the first arc structure 1022 along the extending direction of the piston rod 102, when the bottom-lifting jack 100 works, the cylinder body 104 moves along the axial direction of the sleeve structure of the base 300, the rubber tube interface 1026 is always exposed outside the sleeve structure, the manual operation space is large, and the connection of a rubber tube is facilitated.
Further, the cross-section of the cylinder 104 is shaped as a circular ring.
In this embodiment, the cross-sectional shape of the cylinder 104 is a circular ring, i.e., the cylinder 104 has a cylindrical structure and the piston rod 102 has a cylindrical structure. Therefore, the cylinder body 104 of the bottom lifting jack 100 can always move in the sleeve structure of the base 300 along the axial direction of the sleeve structure, the defect that the cylinder body 104 is easy to fall off in a slide way of the base 300 by adopting a sliding shoe structure is avoided, the structure is simplified, and the bottom lifting jack 100 can work more smoothly.
EXAMPLE III
As shown in fig. 1 to 3, a hydraulic support according to a third embodiment of the present invention includes a push rod 200 and a bottom-lifting jack 100 according to any one of the embodiments described above. The push rod 200 is disposed opposite to the second arc structure 1028 of the bottom-lifting jack 100.
In this embodiment, since the hydraulic support includes the bottom lifting jack 100 in any one of the above technical solutions, the bottom lifting mechanism has all the beneficial effects of the bottom lifting jack 100 in any one of the above technical solutions, and the service life of the hydraulic support is further prolonged. The push rod 200 is disposed opposite to the second arc structure 1028 of the bottom-lifting jack 100, that is, the push rod 200 is disposed below the bottom-lifting jack 100, and is used for pushing the conveyor on one hand and moving the hydraulic support itself on the other hand.
Example four
As shown in fig. 1 to 3, in the above embodiment, further, the hydraulic bracket further includes a base 300. The push rod 200 is positioned on the central line of the base 300 along the length direction, and one end of the push rod 200 extends out of the base 300; under the condition that the bottom-lifting jack 100 works, the second arc structure 1028 is in contact with the push rod 200.
In this embodiment, the hydraulic mount further includes a base 300. The push rod 200 is positioned on a center line of the base 300 in a length direction, and one end thereof protrudes out of the base 300 to be connected to the conveyor. The bottom-lifting jack 100 is located above the push rod 200, and when the bottom-lifting jack 100 works, the piston rod 102 and the cylinder 104 slide relatively, and the cylinder 104 descends continuously until the second arc structure 1028 and the upper surface of the push rod 200 form friction contact, so that large impact caused by the contact is avoided.
Further, the hydraulic support further includes a lifting bottom frame 400. The bottom lifting frame 400 is located above the base 300, and the bottom lifting frame 400 is hinged to the base 300 and the hydraulic jack respectively.
In this embodiment, the bottom lifting frame 400 is hinged to the bottom lifting jack 100, and the bottom lifting frame 400 is hinged to the base 300, so that the bottom lifting jack 100 drives one end of the base 300 by lifting the bottom frame 400 during operation, thereby realizing the bottom lifting function.
Further, as shown in fig. 4 and 5, the bottom lifting frame 400 includes a top plate 402, side plates 404, and ear plates 406. The side plate 404 is connected with the top plate 402 and positioned at two sides of the top plate 402, and the side plate 404 is provided with a second pin hole 4042; the ear plate 406 is connected to the top plate 402 and located on both sides of the top plate 402, the ear plate 406 and the side plate 404 are disposed around the top plate 402, and the ear plate 406 is provided with a third pin hole 4062.
In this embodiment, the side plate 404 and the ear plate 406 are disposed around the top plate 402, the second pin hole 4042 on the side plate 404 is used for hinging with the bottom-lifting jack 100 and the bottom-lifting frame 400, and the third pin hole 4062 on the ear plate 406 is used for hinging the bottom-lifting frame 400 with the base 300, so that when the bottom-lifting jack 100 works, one end of the base 300 is driven by lifting the bottom frame 400, and the lifting of the base 300 is completed.
Further, the base 300 is provided with a sleeve structure, the sleeve structure is located above the push rod 200, and the bottom-raising jack 100 is located inside the sleeve structure and can move along the axial direction of the sleeve structure.
In this embodiment, the sleeve structure of the base 300 is located above the push rod 200, and the bottom-lifting jack 100 can move axially along the sleeve structure inside the sleeve structure, that is, the sleeve structure plays a role in guiding when the bottom-lifting jack 100 works, so that the bottom-lifting jack 100 works more stably, the disadvantage that the sliding shoe structure is easy to fall off in the slideway of the base 300 is avoided, and the structure is simplified. Specifically, when the bottom-lifting jack 100 is operated, the cylinder 104 gradually moves downward along the axial direction of the sleeve structure until the second arc structure 1028 at the bottom of the cylinder 104 contacts the push rod 200, and the cylinder 104 and the piston rod 102 continue to slide relatively to each other, so as to lift one end of the base 300.
Further, as shown in fig. 5, the lower surface of the top plate 402 is provided with a third arc structure 4022, and the third arc structure 4022 is in contact with the first arc structure 1022.
In this embodiment, the third arc structure 4022 on the lower surface of the top plate 402 contacts with the first arc structure 1022 on the top end of the bottom lifting jack 100, so that the damage caused by bending deformation of the hinged shafts of the bottom lifting jack 100 and the bottom lifting mechanism is avoided, and the service life of the hydraulic support is prolonged.
EXAMPLE five
In any of the above embodiments, as shown in fig. 3, further, the hydraulic bracket further includes a first pin 500 and a second pin.
The first pin 500 passes through the first pin hole 1024 and the second pin hole 4042, and is used for hinging the bottom lifting jack 100 with the bottom lifting frame 400; the second pin passes through the third pin hole 4062, and is used for hinging the bottom lifting frame 400 with the base 300.
In this embodiment, the first pin 500 passes through the first pin hole 1024 on the bottom lifting jack 100 and the second pin hole 4042 on the bottom lifting frame 400, so as to realize the hinge joint of the bottom lifting jack 100 and the bottom lifting frame 400. The second pin shaft passes through the third pin hole 4062 on the bottom lifting frame 400 and the base 300, and the bottom lifting frame 400 and the base 300 are hinged. By such an arrangement, when the bottom lifting jack 100 works, the base 300 and the bottom lifting frame 400 can both realize follow-up, so as to realize the bottom lifting function.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As shown in fig. 2 and 3, in an embodiment, the hydraulic support provided by the present invention includes a bottom-lifting jack 100, a bottom-lifting frame 400, a base 300, a push rod 200, a first pin 500, and a second pin.
Specifically, the bottom lifting jack is located at the middle position of the base 300, the upper part of the bottom lifting jack is connected with the bottom lifting frame 400, and the push rod 200 is located below the bottom lifting jack 100 at the middle position of the base 300. When the piston rod 102 of the bottom-lifting jack 100 is extended, the cylinder bottom comes into frictional contact with the top surface of the push rod 200.
As shown in fig. 1, the top of the bottom-lifting jack 100 is provided with a first circular arc structure 1022. A first pin hole 1024 is formed in the piston rod 102 near the first arc structure 1022, and the first pin hole 1024 penetrates through the extending direction of the piston rod 102 to be used as a connection space for the first pin 500. The bottom of the cylinder body 104 of the bottom-lifting jack 100 is provided with a second arc structure 1028, and when the hydraulic support moves forward, the second arc structure 1028 contacts with the upper surface of the push rod 200. The hose connector 1026 is located below the first pin hole 1024 and above the sleeve structure of the base 300, and the manual operation space is large, so that the installation and maintenance are convenient.
As shown in fig. 4 and 5, the bottom lifting frame 400 is provided with 2 side plates 404, 1 top plate 402, 2 ear plates 406 and a hanging ring. The side plate 404 is provided with a second pin hole 4042 for connecting and fixing the first pin 500. The lower surface of the top plate 402 is provided with a third circular arc structure 4022 for contacting the first circular arc structure 1022 of the bottom lifting jack 100. The ear plate 406 has a third pin hole 4062, and connects the base 300 and the bottom lifting frame 400 through a second pin.
According to the hydraulic support provided by the invention, the top of the bottom lifting jack 100 adopts the first arc structure 1022 and is in contact with the arc surface of the top plate 402 of the bottom lifting frame 400, so that the damage caused by bending deformation of the connected first pin shaft 500 is avoided in the working process of the bottom lifting jack 100. In addition, the top and bottom of the bottom-lifting jack 100 are both circular arc structures, which can be well contacted with adjacent components. The cylinder 104 and the base 300 of the bottom lifting jack 100 adopt a sleeve type structure, so that the bottom lifting jack 100 always moves in the sleeve on the base 300 in the working process, and the defect that a sliding shoe is easy to fall off in a sliding way of the base 300 when a sliding shoe structure is adopted is avoided. The rubber tube connector 1026 is designed to be humanized, is positioned at the upper part of the bottom lifting jack 100, does not interfere with the sleeve on the base 300, and is convenient for manual operation.
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, fixed connections, removable connections, or integral connections; 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 jack, comprising:
the piston rod is provided with a first arc structure at one end;
the piston rod is arranged in the cylinder body, and the piston rod and the cylinder body can slide relatively;
the first arc structure is located outside the cylinder body and at one end of the cylinder body, and a second arc structure is arranged at one end, far away from the first arc structure, of the cylinder body.
2. The bottom lifting jack of claim 1, further comprising:
the first pin hole is arranged on the piston rod and is positioned at one end, close to the first arc structure, of the piston rod, and the first pin hole penetrates through the piston rod along the extending direction perpendicular to the piston rod;
and the rubber tube connector is arranged on the piston rod along the extending direction which is perpendicular to the piston rod and is positioned at one end of the piston rod, which is close to the first arc structure.
3. A floor lifting jack according to claim 1 in which the cross-section of the cylinder is in the form of a circular ring.
4. A hydraulic mount, comprising:
a push rod; and
a floor lifting jack according to any one of claims 1 to 3; and the push rod is arranged opposite to the second arc structure of the bottom lifting jack.
5. The hydraulic mount of claim 4, further comprising:
a base;
the push rod is positioned on a central line of the base along the length direction, and one end of the push rod extends out of the base; under the condition that the bottom lifting jack works, the second arc structure is in contact with the upper surface of the push rod.
6. The hydraulic mount of claim 5, further comprising:
and the bottom lifting frame is positioned above the base and is respectively hinged with the base and the bottom lifting jack.
7. The hydraulic mount of claim 6, wherein the lift base frame comprises:
a top plate;
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 second pin holes;
the otic placode with the roof is connected, is located the both sides of roof, the otic placode with the curb plate encloses to be located week side of roof, the otic placode is equipped with the third pinhole.
8. A hydraulic support according to any one of claims 5 to 7, wherein the base is provided with a sleeve arrangement located above the push rod, the bottom-raising jack being located within the sleeve arrangement and being movable in the axial direction of the sleeve arrangement.
9. The hydraulic mount of claim 7, wherein the lower surface of the top plate is provided with a third rounded formation, the third rounded formation being in contact with the first rounded formation.
10. The hydraulic mount of claim 9, further comprising:
the first pin shaft penetrates through the first pin hole and the second pin hole and is used for hinging the bottom lifting jack with the bottom lifting frame;
and the second pin shaft penetrates through the third pin hole and is used for hinging the bottom lifting frame with the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299111.2A CN111453639A (en) | 2020-04-16 | 2020-04-16 | Bottom lifting jack and hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299111.2A CN111453639A (en) | 2020-04-16 | 2020-04-16 | Bottom lifting jack and hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111453639A true CN111453639A (en) | 2020-07-28 |
Family
ID=71675913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010299111.2A Pending CN111453639A (en) | 2020-04-16 | 2020-04-16 | Bottom lifting jack and hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111453639A (en) |
-
2020
- 2020-04-16 CN CN202010299111.2A patent/CN111453639A/en active Pending
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