Lightweight continuous tensioning device

Abstract

The application discloses a kind of lightweight continuous tensioning tools, it is related to anchor rod anchor cable tensioning construction technology field, specifically a kind of lightweight continuous tensioning tools, including tensioning jack, the inside of tensioning jack is equipped with jack outer cylinder, the jack outer cylinder is equipped with jack middle cylinder, the inside of jack middle cylinder is equipped with jack inner cylinder, the inside of jack inner cylinder is equipped with reset spring seat, the inside of reset spring seat is equipped with reset spring, the left side of jack inner cylinder is equipped with tool anchor.The lightweight continuous tensioning tool, by using easy-to-pull anchor and continuous tensioning mechanism, cooperation is used, after anchor cable is fixed, the whole tensioning task can be completed by once lifting of operating personnel, construction is more convenient, reduces labor intensity, eliminates the situation that construction personnel cuts corners due to multiple tensioning, cannot tension to rated force value according to requirements, reduces operating personnel labor intensity, speeds up construction progress, reduces operating personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anchor rod and cable tensioning construction, in particular to a light-weight continuous tensioning device. BACKGROUND

[0002] At present, in the field of coal mines or buildings, the tensioning of steel strands or threaded steel is mainly completed by tensioning jacks, and the pre-tightening is completed by cooperating with anchorage devices. The main implementation process is as follows: the hydraulic pump station realizes pressure supply, the automatic or manual valve body control, and a single anchor cable basically uses a front-mounted tensioning jack. The advantages are as follows: the tensioning of steel strands with short reserves can also be completed; the disadvantages are as follows: it cannot be continuously tensioned, that is, the tensioning length exceeds the stroke of the jack, and manual support is needed to complete multiple tensioning; two necessary conditions for continuous tensioning are as follows: one is that the pressure device has a place to hang, and the other is that the hydraulic anchoring force is small enough (so that the steel strand will not be compressed and scattered).

[0003] The existing tensioning jacks have the following problems: heavy weight; when the anchor cable is long or the designed pre-tightening force is large, multiple tensioning is needed to complete; in the actual operation process, the anchorage device itself has a self-locking function and cannot reach the designed pre-tightening force, and can be fixed at the end of the steel strand; due to the lack of appropriate detection means (or cannot be completely inspected), it cannot be intuitively judged whether the construction is qualified, which causes many construction personnel not to perform according to the construction specifications, or only one tensioning is performed due to negligence (the force value does not reach), and the traditional tensioning jack has a force value of 5-20mpa when the anchor is opened. Since the working principle of the anchor is that the threads of the tool and the anchor are relatively engaged, the threads of the steel strand will be displaced, which will produce sliding friction and collision, the greater the force value, the higher the risk of spark generation, and if there is gas in the coal mine, it will cause an explosion risk. Moreover, the longer the jack is used, the greater the friction between the tool and the anchor cup, and the greater the risk of spark generation. Therefore, we propose a light-weight continuous tensioning device. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a light-weight continuous tensioning device, which solves the problems of the existing tensioning jack in the background art, i.e., the existing tensioning jack is heavy; when the anchor cable is long or the designed pre-tightening force is large, multiple tensioning is required to complete the tensioning; in the actual operation process, the anchor device itself has a self-locking function and cannot reach the designed pre-tightening force, and can also be fixed at the end of the steel strand; without proper detection means (or cannot be completely inspected), it cannot be intuitively determined whether the construction is qualified, which causes many construction personnel not to perform according to the construction specification, or only one tensioning is performed due to negligence (the force value does not reach the designed value), and the traditional tensioning jack has a force value of 5-20mpa when the anchor is opened, and since the working principle of the anchor is that the thread displacement of the steel strand after the tool anchor thread is relatively engaged, sliding friction and collision will occur, the greater the force value, the higher the risk of spark generation, and if there is gas in the coal mine, an explosion risk will occur, and the longer the tensioning jack is used, the greater the friction between the tool anchor and the anchor cup, and the greater the risk of spark generation.

[0005] To achieve the above object, the present application is implemented by the following technical scheme: a light-weight continuous tensioning device, comprising a tensioning jack, a jack outer cylinder is installed inside the tensioning jack, a jack middle cylinder is installed on the jack outer cylinder, a jack inner cylinder is installed inside the jack middle cylinder, a reset spring seat is installed inside the jack inner cylinder, a reset spring is installed inside the reset spring seat, a tool anchor is installed on the left side of the jack inner cylinder, a conical guide sleeve is installed outside the tool anchor, an anchor cup is installed on the left side of the conical guide sleeve, a pressure head is installed on the left side of the jack middle cylinder, a wrench is movably installed on the outer surface of the pressure head, a cam is arranged on the outer surface of the wrench, an easy-to-pull anchor is installed on the left side of the pressure head, an arc annular groove corresponding to the cam is arranged on the outer surface of the easy-to-pull anchor, and a de-anchoring ring is installed inside the pressure head.

[0006] Optionally, the wrench is arranged to rotate on the pressure head, and the easy-to-pull anchor is detachably connected with the pressure head through the wrench, the arc annular groove and the cam.

[0007] Optionally, the pressure head is threadedly connected with the jack middle cylinder, and the anchor cup is fixedly connected with the jack inner cylinder.

[0008] Optionally, the reset spring seat is elastically connected with the jack inner cylinder through the reset spring, and the tool anchor is movably connected with the reset spring seat.

[0009] Optionally, the conical guide sleeve has a table-shaped structure, the conical guide sleeve is fixedly connected with the anchor cup, and the conical guide sleeve is made of modified nylon material.

[0010] Optionally, the tool anchor is attached to the anchor cup, and the tool anchor is arranged to move inside the anchor cup.

[0011] Optionally, the jack outer cylinder is further provided with:

[0012] The oil return pipe handle is installed above the jack outer cylinder, a long joint seat is installed on the left side of the oil return pipe handle, and a quick joint is installed on the right side of the oil return pipe handle.

[0013] Optionally, the easy-to-pull anchor is further provided with:

[0014] The square ring-shaped groove is arranged on the outer surface of the easy-to-pull anchor.

[0015] Optionally, the easy-to-pull anchor is further provided with:

[0016] The skirt ring is integrally fixedly installed on the outer surface of the easy-to-pull anchor.

[0017] The present application provides a lightweight continuous tensioning machine tool, which has the following beneficial effects:

[0018] 1. The lightweight continuous tensioning machine tool uses the easy-to-pull anchor and the continuous tensioning mechanism, and is used in cooperation. After the anchor cable is fixed, the operator can complete the entire tensioning task by lifting once, the construction is more convenient, the labor intensity is reduced, the situation that the construction personnel cut corners and cannot tension to the rated force value according to the requirements is eliminated, the labor intensity of the operator is reduced, the construction progress is accelerated, and the number of operators is reduced.

[0019] 2. The new tensioning jack uses hydraulic anchor opening, the force value is far less than 1 map, does not belong to strong extrusion anchor opening, and the longer the use time is, the more the self-lubricating layer generated in the inside is, and there is no spark risk. The new continuous tensioning jack does not need strong anchor opening because of the anchor ring, saves the anchor opening distance, can tension shorter exposed steel strands, the design of the conical guide sleeve makes the anchor opening force small enough, now the force below 100 kg (1 kn) can completely open, and the service life is not reduced, but the weight is also reduced. Meanwhile, the conical guide sleeve is made of modified nylon material, plays a self-lubricating role, assists in completing continuous tensioning, and avoids the steel strands from being scattered. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present application; Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 3 It is a schematic diagram of the overall structure of the present application;

[0023] Figure 4 It is a schematic diagram of the overall structure of the present application;

[0024] Figure 5 Structure diagram of square ring groove of the application;

[0025] Figure 6 Structure diagram of skirt ring of the application.

[0026] In the figure: 1, outer cylinder of the jack; 2, long joint seat; 3, inner cylinder of the jack; 4, conical guide sleeve; 5, wrench; 6, pressure device; 7, anchor ring; 8, anchor cup; 9, tool anchor; 10, reset spring seat; 11, reset spring; 12, middle cylinder of the jack; 13, quick connector; 14, oil return pipe handle; 15, easy-to-pull anchor; 16, circular arc ring groove; 17, cam; 18, tensioning jack; 19, square ring groove; 20, skirt ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0028] In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0030] Embodiment one

[0031] Please refer to Figures 1-4The utility model provides a kind of lightweight continuous tensioning machine, including tensioning jack 18, tensioning jack 18 is installed with jack outer cylinder 1 in its inside, jack outer cylinder 1 is installed with jack middle cylinder 12, jack middle cylinder 12 is installed with jack inner cylinder 3 in its inside, jack inner cylinder 3 is installed with reset spring seat 10 in its inside, reset spring seat 10 is installed with reset spring 11 in its inside, jack inner cylinder 3 is installed with tool anchor 9 in its left side;Reset spring seat 10 is elastically connected with jack inner cylinder 3 by reset spring 11, and tool anchor 9 is movably connected with reset spring seat 10, tool anchor 9 is installed with conical guide sleeve 4 outside, conical guide sleeve 4 left side is installed with anchor cup 8;Conical guide sleeve 4 is in the form of table, and conical guide sleeve 4 is fixedly connected with anchor cup 8, and conical guide sleeve 4 is made of modified nylon material;Tool anchor 9 is attached with anchor cup 8, and tool anchor 9 is moved inside anchor cup 8, jack middle cylinder 12 left side is installed with top pressure ware 6;Top pressure ware 6 is threadedly connected with jack middle cylinder 12, and anchor cup 8 is fixedly connected with jack inner cylinder 3, top pressure ware 6 outer surface is movably installed with spanner 5, the outer surface of spanner 5 is provided with cam 17, top pressure ware 6 left side is installed with easy-to-pull anchor 15, the outer surface of easy-to-pull anchor 15 is provided with circular arc annular groove 16 corresponding with cam 17;Spanner 5 is rotated on top pressure ware 6, and easy-to-pull anchor 15 is detachably connected with top pressure ware 6 by spanner 5, circular arc annular groove 16 and cam 17, top pressure ware 6 is installed with anchor withdrawal ring 7 inside;By using easy-to-pull anchor 15 and continuous tensioning mechanism, after anchor cable is fixed, the whole tensioning task can be completed by once lifting of operator, construction is more convenient, labor intensity is reduced, and labor intensity of operator is reduced, construction progress is accelerated, and operation personnel are reduced;Oil return pipe handle 14 is installed above jack outer cylinder 1, long joint seat 2 is installed on the left side of oil return pipe handle 14, and quick connector 13 is installed on the right side of oil return pipe handle 14;New tensioning jack 18 uses hydraulic anchor opening, and force value is far less than 1 map, which does not belong to strong extrusion anchor opening, and the longer the use time is, the more self-lubricating layer is generated inside, and there is no spark risk, and new continuous tensioning jack 18 does not need strong anchor opening, saves anchor opening distance, and can tension shorter external leakage steel strand;The design of conical guide sleeve 4 makes the anchor opening force small enough, and now force below 100kg (1kn) can completely open;And service life is not reduced, and weight is also reduced, and conical guide sleeve 4 is made of modified nylon material, which plays self-lubricating role, assists continuous tensioning, and avoids steel strand from appearing scattered strands;This will be an extremely important revolution for coal mine support, and will make coal mine roadway support safer, more convenient and more efficient.

[0032] Example two

[0033] Please refer to Figure 5A light-weight continuous tensioning device, comprising a square ring groove 19, which is opened on the outer surface of the easy-pull anchor 15, and the easy-pull anchor 15 and the pressure device 6 are installed together through the cooperation of the circular arc pipe hoop and the square ring groove 19.

[0034] Example three

[0035] Please refer to Figure 6 A light-weight continuous tensioning device, comprising a skirt ring 20, which is integrally fixed and installed on the outer surface of the easy-pull anchor 15, and the easy-pull anchor 15 and the pressure device 6 are installed together through the cooperation of the pipe hoop and the skirt ring 20.

[0036] Working principle: when using the lightweight continuous tensioning tool, first, the easy-to-pull anchor 15 is added with a circular arc annular groove 16 or a square annular groove 19 or a skirt ring 20 as a supporting point of the tensioning jack 18. After the steel strand is installed and the easy-to-pull anchor 15 is inserted, the worker lifts the tensioning jack 18 through the steel strand. At this time, the wrench 5 is opened due to the upward force, and the worker releases the hand after reaching the position. The tensioning jack 18 is locked by the weight to make the cam 17 inside the circular arc annular groove 16, so that the tensioning jack 18 is hung on the easy-to-pull anchor 15, and thus the worker does not need to lift the tensioning jack 18 no matter how many times the tensioning is performed. The tensioning jack 18 is a prior art, and thus is not described herein. After the tensioning jack 18 is hung, the quick connector 13 is connected with the high-pressure oil inlet, the hydraulic oil drives the middle cylinder 12 of the jack to move relative to the inner cylinder 3 and the outer cylinder 1 of the jack, the pressure device 6 is threadedly connected with the middle cylinder 12 of the jack, so that the pressure device 6 and the anchor releasing ring 7 are away from the tool anchor 9. The reset spring 11 is in a compressed state in the reset state, and after the anchor releasing ring 7 is away from the tool anchor 9, the reset spring 11 pushes the reset spring seat 10 and the tool anchor 9 along the tapered surface to lock the steel strand. Due to the locking force and the tapered structure, the tool anchor 9 is pulled tighter, so that the steel strand locking end is completely solidified. The hydraulic thrust of the middle cylinder 12 of the jack is equal to the tension of the steel strand, and the middle cylinder 12 of the jack continues to move, and the steel strand is forced to be elongated. When the stroke of the tensioning jack 18 reaches the maximum, if the tension at this time does not reach the design requirement, the tensioning needs to be performed again. The tensioning jack 18 needs to be reset, the hydraulic oil flows to the long connector seat 2 through the return oil pipe handle 14, and the hydraulic oil fills in the cavity formed by the middle cylinder 12 of the jack, the outer cylinder 1 of the jack and the inner cylinder 3 of the jack, so as to force the middle cylinder 12 of the jack to move relative to the outer cylinder 1 of the jack and the inner cylinder 3 of the jack. At this time, the inner cylinder 3 of the jack is hard-connected with the pressure device 6 and the easy-to-pull anchor 15. The inner cylinder 3 of the jack and the tool anchor 9 can be opened in the form of sliding friction. In actual test, the steel strand is compressed, that is, the anchor opening force is large, so the tapered guide sleeve 4 is additionally installed on the basis of the original anchor cup 8. The tapered guide sleeve 4 is made of modified nylon material, has good self-lubricating property, and greatly reduces the anchor opening force. The outer cylinder 1 of the jack and the inner cylinder 3 of the jack move upward, and when the top limit position or the appropriate position is reached, the above-mentioned operation is repeated, and the multiple tensioning can be completed. This is the working principle of the lightweight continuous tensioning tool.

[0037] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A lightweight continuous tensioning machine, characterized in that, include: Tensioning jack (18), the tensioning jack (18) has an outer cylinder (1) installed inside, the outer cylinder (1) has a middle cylinder (12) installed inside, the middle cylinder (12) has an inner cylinder (3) installed inside, the inner cylinder (3) has a reset spring seat (10) installed inside, the reset spring seat (10) has a reset spring (11) installed inside, a tool anchor (9) is installed on the left side of the inner cylinder (3), a conical guide sleeve (4) is installed on the outside of the tool anchor (9), the conical guide sleeve (4) has a platform-shaped structure and is made of modified nylon material, an anchor cup (8) is installed on the left side of the conical guide sleeve (4), and the conical guide sleeve (4) is fixedly connected to the anchor cup (8), and a top pressure device (6) is installed on the left side of the middle cylinder (12). The outer surface of the top pressure device (6) is movably mounted with a wrench (5), and the outer surface of the wrench (5) is provided with a cam (17). An easy-pull anchor (15) is installed on the left side of the top pressure device (6). The outer surface of the easy-pull anchor (15) is provided with an arc-shaped groove (16) corresponding to the cam (17). After the steel strand is installed, the easy-pull anchor (15) is inserted. After the easy-pull anchor (15) is installed on the steel strand, the worker lifts the tensioning jack (18) through the steel strand. At this time, the wrench (5) is subjected to an upward force, causing the cam (17) to open. After reaching the position, the worker releases the wrench, and the tensioning jack (18) locks the wrench (5) by its own weight, so that the cam (17) is located inside the arc-shaped groove (16), forming that the tensioning jack (18) is always hanging on the easy-pull anchor (15). An anchor release ring (7) is installed inside the top pressure device (6).

2. The lightweight continuous tensioning machine according to claim 1, characterized in that, The wrench (5) rotates on the top presser (6), and the easy-pull anchor (15) is detachably connected to the top presser (6) through the wrench (5), the arc-shaped groove (16) and the cam (17).

3. The lightweight continuous tensioning machine according to claim 1, characterized in that, The top pressure device (6) is threadedly connected to the middle cylinder (12) of the jack, and the anchor cup (8) is fixedly connected to the inner cylinder (3) of the jack.

4. A lightweight continuous tensioning machine according to claim 1, characterized in that, The reset spring seat (10) is elastically connected to the inner cylinder (3) of the jack via a reset spring (11), and the tool The anchor (9) is movably connected to the reset spring seat (10).

5. A lightweight continuous tensioning machine according to claim 1, characterized in that, The tool anchor (9) is attached to the anchor cup (8), and the tool anchor (9) can move inside the anchor cup (8).

6. A lightweight continuous tensioning machine according to claim 1, characterized in that, The outer cylinder (1) of the jack is also equipped with: The return oil pipe handle (14) is installed above the outer cylinder (1) of the jack. A long connector seat (2) is installed on the left side of the return oil pipe handle (14), and a quick connector (13) is installed on the right side of the return oil pipe handle (14).

7. A lightweight continuous tensioning machine according to claim 1, characterized in that, The pull anchor (15) is also equipped with: A square annular groove (19) is formed on the outer surface of the pull anchor (15).

8. A lightweight continuous tensioning machine according to claim 1, characterized in that, The pull anchor (15) is also equipped with: The skirt ring (20) is integrally fixed on the outer surface of the pull anchor (15).

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