CN209367721U - A kind of rear cover of Mine anchorage cable stretch-draw jack - Google Patents
A kind of rear cover of Mine anchorage cable stretch-draw jack Download PDFInfo
- Publication number
- CN209367721U CN209367721U CN201822168580.1U CN201822168580U CN209367721U CN 209367721 U CN209367721 U CN 209367721U CN 201822168580 U CN201822168580 U CN 201822168580U CN 209367721 U CN209367721 U CN 209367721U
- Authority
- CN
- China
- Prior art keywords
- rear cover
- peripheral surface
- annular
- handle hole
- draw jack
- Prior art date
- 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.)
- Active
Links
Landscapes
- Cable Accessories (AREA)
Abstract
The utility model discloses a kind of rear covers of Mine anchorage cable stretch-draw jack, its key points of the technical solution are that: the rear cover is annular in shape, the external screw thread being threadedly coupled with outer shell inner peripheral surface is offered on the outer peripheral surface of rear cover, and the internal screw thread being threadedly coupled with inner casing outer peripheral surface is offered on the inner peripheral surface of the rear cover；The inner peripheral surface of the rear cover offers first annular groove, and the first seal of annular is provided in first annular groove；Second annular groove is offered on the outer peripheral surface of the rear cover, and the second seal of annular is arranged in second annular groove.The utility model has the advantages that: make rear cover while having the function of sealing cover and locking nut, so that rear cover be made to install and safeguard more convenient.
Description
Technical field
The utility model relates to prestressed stretch-draw jack mounting technology fields, and in particular to a kind of Mine anchorage cable tensioning thousand
The rear cover on jin top.
Background technique
Stretch-draw jack is the Special jack for presstressed reinforcing steels such as tensioning steel hinge lines.Stretch-draw jack needs and tensioning oil
Pump is used cooperatively, and tensioning and the power to return back to top are provided by the high pressure oil of stretching oil pump.According to the different stretch-draw jacks of structure
Clip type jack and centre-hole jack before being divided into again.
Existing stretch-draw jack, as shown in Figure 1, comprising: jack head portion 61, inner casing 3, middle cylinder 62, outer shell 2, tool
Anchor 63 and tool holder 64.Lower section in outer shell 2 is disposed with sealing cover 65, locking nut 66 and rear cover 1.Sealing cover 65
On be arranged with first seal 113 and second seal 114, the setting of sealing cover 65 is mainly used for preventing inner casing 3 and outer shell 2 from pressing from both sides
Oil pocket oil leakage in layer；Locking nut 66 is threadedly coupled with inner casing 3, and the setting of locking nut 66 is connected to inner casing 3, is prevented interior
The play between sealing cover 65 and rear cover 1 of cylinder 3；And rear cover 1 is threadedly coupled with outer shell 2, rear cover 1 is mainly to sealing cover 65 and locking
Nut 66 plays positioning action and closes the bottom of outer shell 2.
When dismounting to stretch-draw jack, the bottom of outer shell includes sealing cover, locking nut and rear cover, their threes are pacifying
It during assembly and disassembly, needs to cooperate between each components, install and safeguards more complicated.
Utility model content
The purpose of the utility model is to provide a kind of rear covers of Mine anchorage cable stretch-draw jack, its advantage is that making rear cover simultaneously
Have the function of sealing cover and locking nut, so that rear cover be made to install and safeguard more convenient.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of rear cover of Mine anchorage cable stretch-draw jack, the rear cover is annular in shape, offered on the outer peripheral surface of rear cover with outside
The external screw thread that cylinder inner peripheral surface is threadedly coupled offers the interior spiral shell being threadedly coupled with inner casing outer peripheral surface on the inner peripheral surface of the rear cover
Line；The inner peripheral surface of the rear cover offers first annular groove, and the first seal of annular is provided in first annular groove；Institute
It states and offers second annular groove on the outer peripheral surface of rear cover, the second seal of annular is arranged in second annular groove.
Through the above technical solutions, staff passes through the rotation of rear cover when mutually installing to rear cover and stretch-draw jack
It twists, so that the internal screw thread of the screw thread of the outer peripheral surface of rear cover and outer shell cooperates；The screw thread and inner casing outer peripheral surface of rear cover inner peripheral surface
Screw thread cooperate, be fixed to each other to realize rear cover with inner casing and outer shell, so that rear cover while having in connection
The effect of cylinder and outer shell, improves rear cover and stretch-draw jack installation and the efficiency safeguarded, and first annular groove is opened up to the
One sealing element plays the role of fixed detent, so that first seal and rear cover are fixed more when oily cavity pressure is larger
Add firm.And the setting of first seal, by mutually reclining with outer shell inner peripheral surface, so that the oil in oil pocket is not easy to leak outside.
Opening up for second annular groove plays the role of fixed detent to second seal, thus when oil pressure is excessive in oil pocket, the
Two sealing elements and rear cover are fixed more firm.And the setting of second seal is made by mutually reclining with inner casing outer peripheral surface
The oil obtained in oil pocket not easily passs through the gap between inner casing and rear cover.
The utility model is further arranged to: restricted rear cover and the fixed position of outer shell are opened up on the inner peripheral surface of the outer shell
Annular the first limiting slot, the first limit of the annular being used cooperatively with limiting slot is offered on the outer peripheral surface of the rear cover
Platform.
Through the above technical solutions, the first limiting stand can contradict when rear cover is twisted from the bottom of outer shell to outer shell inward turning
At the notch of first limiting slot, to limit the fixation position of rear cover and outer shell.
The utility model is further arranged to: the first retaining ring of annular is placed on first limiting stand.
Through the above technical solutions, the setting of the first retaining ring, can make up for it at the first limiting stand and the second limiting slot notch
The gap to contact with each other, to keep rear cover and outer shell junction tighter, to reduce the leakage of oil liquid.
The utility model is further arranged to: restricted rear cover and the fixed position of inner casing are opened up on the outer peripheral surface of the inner casing
Annular the second limiting slot, the second limit of the annular being used cooperatively with the second limiting slot is offered on the inner peripheral surface of rear cover
Platform.
Through the above technical solutions, the notch of the second limiting slot can play rear cover after rear cover is screwed on inner casing
The effect of limit so that the notch of the second limiting slot contacts with each other with the second limiting stand so that rear cover can not including
Continue to screw on cylinder.
The utility model is further arranged to: being placed with the second retaining ring on second limiting stand.
Through the above technical solutions, the setting of the second retaining ring, can make up for it at the second limiting stand and the second limiting slot notch
The gap to contact with each other, so that rear cover be made to abut with inner casing, place is tighter, to reduce the leakage of oil liquid.
The utility model is further arranged to: two handle holes are at least offered on the bottom surface of the rear cover.
Through the above technical solutions, handle hole opens up, insert a tool into convenient for staff into two handle holes, from
And rear cover is screwed convenient for rotation tool, to improve the convenience screwed to rear cover.
The utility model is further arranged to: the handle hole section is provided in round, and is offered in the handle hole interior
Screw thread.
Through the above technical solutions, internal screw thread is offered in handle hole, consequently facilitating bolt is threaded into behaviour by staff
Make in hole, so that fixed more stable of bolt and rear cover, more convenient pair of rear cover is screwed.
The utility model is further arranged to: miscellaneous group of gear for preventing from entering in handle hole sundries is provided in the handle hole
Part, the miscellaneous component of gear include the spring and baffle that side is placed on handle hole, one end of the spring and the inner wall of handle hole
It is fixedly connected, the other end of spring is fixedly connected with baffle, and the sectional dimension of baffle and the sectional dimension of handle hole are identical, baffle
When initial position, baffle is flushed away from the side of spring with the bottom surface of rear cover.
Through the above technical solutions, the setting of dust-break component, the sundries for reducing external environment is entered in handle hole
Possibility, when bolt is threaded into handle hole, bolt can press baffle, keep direction of the baffle into handle hole mobile, thus
Spring-compressed is driven, so that baffle will not cause to hinder to the fixation of bolt and rear cover, after then bolt is screwed out out of fixation hole,
Under the elastic acting force of spring, the lower surface of the end face and rear cover that make baffle is flush baffle, to hinder impurity entrance
Into handle hole.
In conclusion the utility model has the following beneficial effects:
One, the efficiency of installation and maintenance is improved.Staff passes through when mutually installing to rear cover and stretch-draw jack
Rear cover screws, so that the internal screw thread of the screw thread of the outer peripheral surface of rear cover and outer shell cooperates；The screw thread of rear cover inner peripheral surface with it is interior
The screw thread of cylinder outer peripheral surface cooperates, and is fixed to each other to realize rear cover with inner casing and outer shell, so that a rear cover has simultaneously
Play the role of connecting inner casing and outer shell, improves the efficiency of installation and maintenance；
Two, reduce impurity to enter in handle hole.When bolt is threaded into handle hole, bolt can press baffle, make
Direction of the baffle into handle hole is mobile, so that spring-compressed is driven, so that baffle will not cause the fixation of bolt and rear cover
It hinders, after then bolt is screwed out out of fixation hole, baffle makes under the end face and rear cover of baffle under the elastic acting force of spring
Surface is flush, and enters in handle hole to hinder impurity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of stretch-draw jack in background technique；
Fig. 2 is rear cover and stretch-draw jack sectional arrangement drawing in embodiment 1；
Fig. 3 is rear cover and stretch-draw jack device explosion cross-sectional view in embodiment 1；
Fig. 4 is to embody bolt screwed state cross-sectional view in embodiment 1；
Fig. 5 is that the cross-sectional view for keeping off miscellaneous component is embodied in embodiment 2；
Fig. 6 is that miscellaneous component operation state cross-sectional view is kept off in embodiment 2.
In figure, 1, rear cover；11, first annular piece；111, first annular groove；112, second annular groove；113, first
Sealing element；114, second seal；12, the second ring block；121, the first limiting stand；122, the second limiting stand；123, first gear
Circle；124, the second retaining ring；125, handle hole；2, outer shell；21, the first limiting slot；3, inner casing；31, the second limiting slot；4, bolt；
5, miscellaneous component is kept off；51, spring；52, baffle；61, jack head；62, middle cylinder；63, moveable anchor；64, tool holder；65, it seals
Lid；66, locking nut.
Specific embodiment
Embodiment 1: a kind of rear cover of Mine anchorage cable stretch-draw jack, as shown in Figures 2 and 3, rear cover 1 are annular in shape, rear cover 1
Including first annular piece 11 and the second ring block 12.Second ring block 12 be arranged in first annular piece 11 of lower section and with the first ring
Shape block 11 is coaxial affixed；The diameter of second ring block 12 is greater than first annular piece 11 of diameter, to make on the second ring block 12
The outer edge on surface forms the first limiting stand 121；The interior circular diameter of second ring block 12 is less than first annular piece of 11 inner circles
Diameter, so that the inner circle edge of 12 upper surface of the second ring block be made to form the second limiting stand 122.
As shown in Figures 2 and 3, the bottom of 2 inner peripheral surface of outer shell offers the first limiting slot 21 of annular, the first limiting slot 21
The bottom surface of outer shell 2 is penetrated, and the bottom of 3 outer peripheral surface of inner casing offers the second limiting slot 31 of annular, the second limiting slot 31 will
The bottom surface of inner casing 3 penetrates.External screw thread is offered on the outer peripheral surface of second ring block 12, the inner peripheral surface of the first limiting slot 21 offers
With the mutually matched internal screw thread of 12 external screw thread of the second ring block.The inner peripheral surface of second ring block 12 offers internal screw thread, the second limit
It is offered and the mutually matched external screw thread of 12 internal screw thread of the second ring block on the inner peripheral surface of position slot 31.When rear cover 1 and tensioning are very heavy
Rear cover 1 can be threaded into outer shell 2 when being fixed to each other by top from the bottom of outer shell 2, thus make rear cover 1 simultaneously with inner casing 3 and outer shell
2 cooperate, and make fixed more stable of inner casing 3 and outer shell 2, and 1 structure of rear cover is simple, improve to the installation of rear cover 1 and
The convenience of maintenance.When the first limiting stand 121 on the second ring block 12 is contacted with the upper wall of 2 first limiting slot 21 of outer shell, together
When the second ring block 12 on the upper wall of the second limiting stand 122 and the first limiting slot 21 on inner casing 3 when contacting so that rear cover 1
It can not continue to rotate in outer shell 2.
As shown in Figures 2 and 3, the first retaining ring 123 of annular, and the second limiting stand 122 are placed on the first limiting stand 121
On be placed with annular the second retaining ring 124.After rear cover 1 is threaded into outer shell 2, the first retaining ring 123 and the second retaining ring 124 are not
But the contact gap between rear cover 1 and outer shell 2 is compensated for, while also compensating for the contact gap between rear cover 1 and inner casing 3, is made
It obtains outer shell 2 and the interbedded oil pocket oil of inner casing 3 is not easy to leak outside.It is offered on first annular piece 11 of inner peripheral surface first annular recessed
Slot 111, the first seal 113 of annular is arranged in first annular groove 111, and first seal 113 is rubber material.When after
After lid 1 and inner casing 3 are fixed to each other, first seal 113 is pressed against on the outer wall of inner casing 3 so that inner casing 3 and outer shell 2 it
Between be not likely to produce gap so that the oil pocket oil between inner casing 3 and outer shell 2 is not easy from first annular piece 11 and 3 outer wall of inner casing
Between gap leakage.First annular piece 11 it is outer below on offer second annular groove 112, in second annular groove 112
It is arranged with the second seal 114 of annular, second seal 114 is rubber material.After rear cover 1 and outer shell 2 are fixed to each other, the
Two sealing elements 114 are pressed against on the inner wall of outer shell 2, so that gap is not likely to produce between inner casing 3 and outer shell 2, so that inner casing 3
Oil pocket oil between outer shell 2 is not easy to leak outside from the gap between first annular piece 11 and 2 inner wall of outer shell.
As shown in figure 4, the second ring block 12 opens up vertically away from first annular piece 11 of side, there are two cylindrical behaviour
Make hole 125, and offers internal screw thread on the inner peripheral surface in handle hole 125.When being mounted and dismounted to rear cover 1, work
Two bolts 4 can be threaded into two handle holes 125 by personnel, and be threaded into bolt 4 not exclusively in handle hole 125, and two
Bolt 4 provides the handrail for screwing rear cover 1 to staff, consequently facilitating carrying out rotation installation and removal to rear cover 1.
Embodiment 2: a kind of rear cover of Mine anchorage cable stretch-draw jack, difference from example 1 is that, such as Fig. 5 and
Shown in Fig. 6, manipulates interior setting and be reduced the miscellaneous component 5 of gear that sundries enters in handle hole 125.Keeping off miscellaneous component 5 includes successively putting
Enter into the spring 51 and baffle 52 in handle hole 125, one end of spring 51 and the upper wall in handle hole 125 are affixed, spring 51
The other end is fixedly connected with baffle 52；The sectional dimension of baffle 52 is identical as the sectional dimension of handle hole 125.Dust-break component is in
When initial position, baffle 52 is supported at the aperture of handle hole 125 by spring 51, makes lower surface and the second ring block of baffle 52
12 lower surface is mutually flush, to prevent the sundries of working environment from entering in handle hole 125, influences the screw-in of bolt 4.
When being dismantled to rear cover 1, bolt 4 can be threaded into handle hole 125, so that the head of bolt 4 withstands on the lower surface of baffle 52
It goes up and drives baffle 52 as the direction movement in handle hole 125, and drive 51 elastic compression of spring, thus to the screw-in of bolt 4
Play the role of evacuation, so that the installation of bolt 4 can't be impacted by keeping off miscellaneous component 5, and bolt 4 is from handle hole 125
After interior back-out, baffle 52 can be returned to again the orifice position of handle hole 125 under the elastic acting force of spring 51.
The course of work: when rear cover 1 and stretch-draw jack are fixed to each other, two bolts 4 can be threaded on rear cover 1 two
In a handle hole 125, internal screw thread and external screw thread phase of the rear cover 1 simultaneously with outer shell 2 and inner casing 3 then are driven by two bolts 4
Mutually cooperate, and rear cover 1 is threaded into the bottom of outer shell 2, when the first limiting stand 121 and outer shell 2 first on the second ring block 12
The upper wall of limiting slot 21 contacts, while the second limiting stand 122 on the second ring block 12 and the first limiting slot 21 on inner casing 3
When upper wall contacts, stop screwing to rear cover 1.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of rear cover of Mine anchorage cable stretch-draw jack, it is characterized in that: the rear cover (1) is annularly, the outer peripheral surface of rear cover (1)
On offer the external screw thread being threadedly coupled with outer shell (2) inner peripheral surface, offered on the inner peripheral surface of the rear cover (1) with inner casing (3)
The internal screw thread that outer peripheral surface is threadedly coupled；The inner peripheral surface of the rear cover (1) offers first annular groove (111), first annular recessed
The first seal (113) of annular is provided in slot (111)；Second annular groove is offered on the outer peripheral surface of the rear cover (1)
(112), the second seal (114) of annular is arranged in second annular groove (112).
2. a kind of rear cover of Mine anchorage cable stretch-draw jack according to claim 1, it is characterized in that: the outer shell (2)
The first limiting slot (21) of the annular of restricted rear cover (1) and outer shell (2) fixed position, the rear cover (1) are opened up on inner peripheral surface
Outer peripheral surface on offer with limiting slot be used cooperatively annular the first limiting stand (121).
3. the rear cover of a kind of Mine anchorage cable stretch-draw jack according to claim 2, it is characterized in that: first limiting stand
(121) the first retaining ring (123) of annular is placed on.
4. a kind of rear cover of Mine anchorage cable stretch-draw jack according to claim 1, it is characterized in that: the inner casing (3)
Open up the second limiting slot (31) of the annular of the fixed position in restricted rear cover (1) and inner casing (3) on outer peripheral surface, rear cover (1) it is interior
The second limiting stand (122) for the annular being used cooperatively with the second limiting slot (31) is offered on circumferential surface.
5. the rear cover of a kind of Mine anchorage cable stretch-draw jack according to claim 4, it is characterized in that: second limiting stand
(122) the second retaining ring (124) are placed on.
6. a kind of rear cover of Mine anchorage cable stretch-draw jack according to claim 1, it is characterized in that: the rear cover (1)
Two handle holes (125) are at least offered on bottom surface.
7. the rear cover of a kind of Mine anchorage cable stretch-draw jack according to claim 6, it is characterized in that: the handle hole
(125) section is provided in round, and offers internal screw thread in the handle hole (125).
8. the rear cover of a kind of Mine anchorage cable stretch-draw jack according to claim 7, it is characterized in that: the handle hole
(125) the miscellaneous component of gear (5) for preventing entering sundries in handle hole (125) is provided in, the miscellaneous component (5) of gear includes that side is put
The spring (51) and baffle (52) in handle hole (125) are set, one end of the spring (51) and the inner wall of handle hole (125) are fixed
Connection, the other end of spring (51) are fixedly connected with baffle (52), the sectional dimension of baffle (52) and the section of handle hole (125)
Size is identical, and when baffle (52) initial position, baffle (52) is flushed away from the side of spring (51) with the bottom surface of rear cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822168580.1U CN209367721U (en) | 2018-12-22 | 2018-12-22 | A kind of rear cover of Mine anchorage cable stretch-draw jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822168580.1U CN209367721U (en) | 2018-12-22 | 2018-12-22 | A kind of rear cover of Mine anchorage cable stretch-draw jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209367721U true CN209367721U (en) | 2019-09-10 |
Family
ID=67830191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822168580.1U Active CN209367721U (en) | 2018-12-22 | 2018-12-22 | A kind of rear cover of Mine anchorage cable stretch-draw jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209367721U (en) |
-
2018
- 2018-12-22 CN CN201822168580.1U patent/CN209367721U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209367721U (en) | A kind of rear cover of Mine anchorage cable stretch-draw jack | |
| CN205936491U (en) | Oil field pump well well head sealing device | |
| CN2551758Y (en) | Ring jet-preventing device for drilling well | |
| CN200989361Y (en) | Pressure locking nut | |
| CN212691491U (en) | Ultrahigh pressure container sealing plug convenient to install and detach | |
| CN207629960U (en) | Nuclear bolt stretcher piston oil-cylinder mounting and dismounting tool | |
| CN212561289U (en) | Exempt from electric lift ground post core and lift ground post of screw installation | |
| CN2816341Y (en) | Pressure-relief type well-plugging device | |
| CN208735101U (en) | Reactor fluid power gate leakage monitor | |
| CN204457567U (en) | A kind of thermal production well mouth note takes out dual-purpose seal box | |
| CN211692385U (en) | Integral bottom slip casing head capable of improving installation speed | |
| CN214118453U (en) | Sealing device for booster pump | |
| CN206320069U (en) | Pump shaft rotation seal assembly | |
| CN211514725U (en) | Lower sealing device of vertical crusher | |
| CN217761300U (en) | High-efficiency plunger pump | |
| CN219692038U (en) | Bearing frame with waste oil treatment function | |
| CN219692261U (en) | Sealing assembly for mill cylinder | |
| CN211851652U (en) | Carousel bull gear closing device | |
| CN114102515B (en) | Dismounting system, assembly method and dismounting method of double-deck valve cover type valve | |
| CN210978580U (en) | Connecting device of electric gate valve | |
| CN220453384U (en) | Explosion-proof type lubricating pump | |
| CN213684369U (en) | Water turbine volute entrance door with door cover jacking device | |
| CN218564756U (en) | Chemical pipeline safety protection cover | |
| CN109379021A (en) | A kind of solar energy cell plate mounting bracket component | |
| CN210660992U (en) | Double-end fastening bolt of blowout preventer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |