CN213540441U

CN213540441U - Anchor withdrawing device based on tensioning jack

Info

Publication number: CN213540441U
Application number: CN202022624140.XU
Authority: CN
Inventors: 金建成; 铁龙; 马宝平; 屈英; 范黎明; 孔小斌; 王震; 齐建勇
Original assignee: Huating Coal Industry Group Co ltd
Current assignee: Huating Coal Industry Group Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-06-25
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses an move back anchor device based on jack-knifing, including anchor rope jack-knifing and move back anchor device, anchor rope jack-knifing includes jack-knifing liquid inlet, jack-knifing liquid return opening, top and cylinder body, moves back anchor device and is located anchor rope jack-knifing top, jack-knifing liquid inlet, jack-knifing liquid return opening are seted up respectively in anchor rope jack-knifing bottom side and upper portion side, move back anchor device shell upper and lower both ends and have aperture and macropore respectively, and have the cavity between macropore to the aperture, the cavity is the cylinder form, has seted up three dead slot around the macropore, and three dead slot is equilateral triangle along the macropore circumferencial direction and distributes; the hydraulic pressure is adopted as power, so that the operation is convenient, the power is large, and the efficiency is high; when the lock is used, the anchor withdrawing device is consistent with the external dimension of the lock shell, the correspondence is strong, and the risk of slipping of the anchor withdrawing device and the lock due to inconsistent dimension is avoided.

Description

Anchor withdrawing device based on tensioning jack

Technical Field

The utility model relates to a mine support field specifically is a move back anchor device based on jack-draw.

Background

As an effective means for rock burst prevention, strong support is widely applied to coal mine rock burst prevention, and a high-strength anchor rope is matched with a high-strength lock to become an essential part in a support system. Therefore, the support system is damaged by adopting manual forced caving and manual anchor withdrawing modes such as hydraulic fracturing, advanced loosening and the like.

In the application process, however, the phenomena of complicated operation, high risk, difficulty in controlling critical points and the like exist in manual forced roof caving; when the anchor is withdrawn manually, the existing anchor withdrawing machine is driven by oil pressure, and has the advantages of large volume, high labor intensity during operation and slow speed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a move back anchor device based on stretch-draw jack to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a move back anchor device based on jack-draw, includes anchor rope jack-draw and moves back the anchor device, anchor rope jack-draw includes jack-draw inlet, jack-draw return liquid mouth, top and cylinder body, moves back the anchor device and is located anchor rope jack-draw top, jack-draw inlet, jack-draw return liquid mouth set up respectively in anchor rope jack-draw's lower part side and upper portion side, it has the shell to move back the anchor device, and both ends have aperture and macropore respectively about the shell, and has the cavity between macropore to the aperture, the cavity is the cylinder form, has seted up three dead slot around the macropore, and three dead slot is equilateral triangle along the macropore circumferencial direction and distributes.

As the preferred scheme of the utility model: an expansion hole extending to the height 3/4 of the shell is arranged above the large hole, the depth of the empty groove is slightly smaller than that of the expansion hole, and the aperture of the empty groove is larger than the radius of the large hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is based on the design of the tensioning jack, adopts hydraulic pressure as power, and has convenient operation, large power and high efficiency;

2. the utility model is formed by processing the waste lockset with the same type as the lockset, the external size of the anchor withdrawing device is consistent with that of the lock shell of the lock in use, the correspondence is strong, and the risk of slipping of the anchor withdrawing device and the lock in use caused by inconsistent size is eliminated;

3. the utility model has the advantages that the inner hole-expanding is cylindrical, the size of the inner hole-expanding is slightly larger than that of the big hole of the lock used in use, the lock core can fall off conveniently and can not fall into an external roadway, and the phenomenon of lock core loss in the anchor withdrawing process is avoided;

4. the utility model discloses a three dead slot is opened at the three corresponding point of shell, when the lock core corrosion caused can't drop by oneself, can artificially intervene and knock it off with instruments such as screwdrivers, stopped to take place because of the unable anchor phenomenon that moves back that the lock core corrosion leads to.

5. The utility model discloses a in the design, mainly utilized the used anchor rope tool to lock shell of tunnel support, easily look for in the colliery workshop, the preparation is convenient, simultaneously through the finished product tool to lock shell of processing small, light, easily carry, also have easy operation when the field application, the high characteristics of security.

Drawings

Fig. 1 is a schematic view of the use structure of the present invention.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic top view of the present invention.

Fig. 4 is a schematic view of the anchor withdrawing device of the present invention.

Fig. 5 is a schematic view of the overhead structure of the anchor withdrawing device of the present invention.

In the figure: 1-tensioning a jack by an anchor cable; 2-tensioning a jack liquid inlet; 3-tensioning a jack liquid return port; 4-an anchor withdrawing device; 5-empty groove; 6-cavities; 7-Small hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

please refer to fig. 1-5, an anchor withdrawing device based on a tension jack comprises an anchor cable tension jack 1 and an anchor withdrawing device 4, wherein the anchor cable tension jack 1 comprises a tension jack liquid inlet 2, a tension jack liquid return port 3, a top head and a cylinder body, the anchor withdrawing device 4 is positioned at the top of the anchor cable tension jack 1, the tension jack liquid inlet 2 and the tension jack liquid return port 3 are respectively arranged at the lower side and the upper side of the anchor cable tension jack 1, the anchor withdrawing device 4 is provided with a shell, the upper end and the lower end of the shell are respectively provided with a small hole 7 and a large hole, a cavity 6 is arranged between the large hole and the small hole 7, the cavity 6 is cylindrical, three empty slots 5 are arranged around the large hole, and the central points of the three empty slots 5 are distributed in an equilateral triangle along the circumferential direction of the large hole.

When the anchor withdrawing device 4 is used, the anchor cable tensioning jack 1 is required to be matched, the liquid inlet pipeline and the liquid return pipeline are communicated, the end 7 of the small hole of the anchor withdrawing device 4 is placed on the top of the tensioning jack 1, the end of the large hole is aligned with the anchor cable lock, and the anchor can be withdrawn by operating the handle of the anchor cable tensioning jack 1.

The utility model discloses a theory of operation is: under the normal condition, under the action of the gravity of the lock shell and the supporting plate, or the top plate sinks and the roadway side moves close to the top plate to transmit force through the supporting plate, so that the stress of the anchor cable lock shell is increased, and the fastening effect of the lock on the anchor cable is better; the anchor withdrawing device 4 reversely applies acting force through the anchor cable stretching jack 1 to extrude the lock shell in the coal body direction, so that the lock shell is completely separated from the lock core and finally falls off, the anchor cable lock loses the anchoring effect on the anchor cable, and the lock shell and the supporting plate at the lower end of the anchor cable can also be separated from the anchor cable, thereby causing the anchor cable to lose efficacy.

Before the anchor cable stretching jack is used, the anchor cable stretching jack 1 is connected to feed liquid and return liquid pipelines, then the small hole 7 end of the anchor withdrawing device 4 is arranged on the anchor cable stretching jack 1, the large hole end of the anchor withdrawing device 4 is aligned with and abutted against the anchor cable lock, and at the moment, the anchor cable stretching jack can be used.

When the tool is used, the end of the large hole of the anchor withdrawing device 4 is aligned with the anchor cable lock, the end of the small hole 7 is arranged in the groove of the top head of the tensioning jack 1, then the tensioning jack 1 is connected into the high-pressure pipeline valve group of the bracket, the tensioning jack 1 acts to clamp the anchor cable by controlling the handle, then the top head pushes the anchor withdrawing device 4 to stretch forwards, the inner diameter of the large opening end of the anchor withdrawing device 4 is larger than the inner diameter of the large opening end of the used tool, the anchor cable lock shell is forced to move upwards along the anchor cable by the extrusion of the tensioning jack 1, the used tool can be pushed inwards in the advancing process along with the continuous action of the tensioning jack 1, the lock cylinder naturally falls into the cavity 6 of the anchor withdrawing device 4 (when the lock cylinder cannot fall off, the lock cylinder can fall off by adopting a screwdriver and a small hammer in the hollow groove 5 to knock the lock cylinder, the lock cylinder can fall off), then the, the anchor cable lockset can be withdrawn.

Example 2:

on the basis of the embodiment 1, the large hole is provided with an expanding hole extending to the height 3/4 of the shell, the depth of the empty groove 5 is slightly smaller than that of the expanding hole, and the aperture of the empty groove 5 is larger than the radius of the large hole.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a move back anchor device based on jack-draw, includes anchor rope jack-draw (1) and moves back anchor device (4), its characterized in that, anchor rope jack-draw (1) returns liquid mouth (3), top and cylinder body including jack-draw liquid inlet (2), jack-draw, moves back anchor device (4) and is located anchor rope jack-draw (1) top, jack-draw liquid inlet (2), jack-draw return liquid mouth (3) set up respectively in the lower part side and the upper portion side of anchor rope jack-draw (1), move back anchor device (4) shell about both ends have aperture (7) and macropore respectively, and have between macropore to aperture (7) cavity (6), seted up three dead slot (5) around the macropore.

2. A jack-down device according to claim 1, wherein the hollow (6) is cylindrical.

3. A tensioning jack-based anchor removing device according to claim 1 or 2, characterized in that the three empty slots (5) are distributed in an equilateral triangle along the circumference of the large hole.

4. A tensioning jack-based anchor withdrawal apparatus as claimed in claim 3 wherein there is a flared aperture extending above the large aperture to a height 3/4 of the housing.

5. A tensioning jack-based anchor withdrawal device according to claim 4, characterized in that the depth of the empty groove (5) is slightly smaller than the depth of the expanding hole, and the diameter of the empty groove (5) is larger than the radius of the large hole.