Auxiliary device of anchor rod drawing instrument

Abstract

The utility model discloses an auxiliary device of an anchor rod drawing instrument. The auxiliary device comprises a hydraulic prop, an embedded nail, a first resistance increasing sheet, a second resistance increasing sheet and a bearing steel plate which is horizontally arranged, a drawing opening is formed in the middle of the plate face of the bearing steel plate in a penetrating mode, at least three evenly-arranged hydraulic supporting columns are arranged at the bottom of the bearing steel plate in the circumferential direction, cylinder bodies of the hydraulic supporting columns are fixedly connected with the lower plate face of the bearing steel plate, and movable columns of the hydraulic supporting columns are vertically arranged downwards. An embedded nail is vertically fixed at the bottom end of a plunger of each hydraulic prop, scale marks are arranged on the plunger of the hydraulic prop above the embedded nail along the length direction, a first resistance increasing sheet is fixedly sleeved on the scale mark area of the plunger of the hydraulic prop, and a second resistance increasing sheet is fixedly sleeved on the plunger of the hydraulic prop above the scale marks.

Description

TECHNICAL FIELD

[0001] The utility model relates to anchor rod pullout tester technical field, specifically related to a kind of auxiliary device of anchor rod pullout tester. BACKGROUND

[0002] Anchor rod pullout test is one of the main means to detect anchor rod construction quality, when conducting anchor rod pullout test, hydraulic jack is placed between supporting plate and nut, tighten nut, exert certain prestress, then pressurize using hand-operated hydraulic pump, simultaneously record corresponding degree on hydraulic pressure gauge and displacement meter, when pressure or displacement reading reaches predetermined value, or when pressure gauge reading drops and displacement meter reading rapidly increases, stop pressurizing, after testing, load-displacement curve of anchor rod can be sorted out, and then anchor rod anchoring quality is analyzed.

[0003] But under complex geological conditions, the following problems exist in the implementation test process: first, the slope surface of side slope is often uneven, the slope surface at anchor rod hole position is some pit, some protrusion, and some local area rock layer is anti-inclined, which leads to that anchor rod pullout tester cannot effectively react pulling force on the slope surface, so that pulling test is inaccurate or even cannot be conducted. Second, the rock property in treatment area is relatively complex, soft rock and hard rock and fault fracture zone exist alternately, in pulling process, soft rock compression is large, and hard rock compression is small, leading to that anchor rod pullout tester is unevenly stressed and inclined, if all are soft rock, because soft rock compression is obvious, anchor rod pulling displacement cannot be accurately measured, leading to that measurement result precision is poor. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of auxiliary device of anchor rod pullout tester.

[0005] The utility model is implemented by the following technical schemes: a kind of auxiliary device of anchor rod pullout tester, it includes hydraulic prop, embedded nail, first resistance increasing piece, second resistance increasing piece and horizontally arranged bearing steel sheet;Pulling opening is opened in the middle part of the plate face of the bearing steel sheet, at least three evenly arranged hydraulic props are arranged in the bottom of the bearing steel sheet along the circumference, the cylinder body of the hydraulic prop is fixedly connected with the lower plate face of the bearing steel sheet, and the live column of the hydraulic prop is vertically arranged downward;The embedded nail is fixed vertically on the bottom end of the live column of each hydraulic prop, scale line is arranged on the live column of the hydraulic prop above the embedded nail along the length direction, the first resistance increasing piece is fixedly sleeved on the scale line area of the live column of the hydraulic prop, and the second resistance increasing piece is fixedly sleeved on the live column of the hydraulic prop above the scale line.

[0006] Preferably, the bearing steel plate is a rectangular plate, and one hydraulic prop is arranged at each of four corners of the bearing steel plate below, the cylinder body of each hydraulic prop is fixedly connected with the lower plate surface of the bearing steel plate, and the piston rod of each hydraulic prop is vertically arranged downward.

[0007] Preferably, a level gauge is arranged on the upper surface of the bearing steel plate near each of two adjacent sides, and the extension lines of the two level gauges are arranged vertically.

[0008] Preferably, the device further comprises an oil tank, a hydraulic pump and an oil pipe, the hydraulic pump is arranged in the oil tank, and the hydraulic pump is connected with the oil inlet of the cylinder body of the hydraulic prop through the oil pipe.

[0009] Preferably, an operation panel is arranged on the oil tank, and the operation panel is provided with a display screen and control buttons.

[0010] The utility model discloses a bearing steel plate embedded in the slope of the slope, and the bearing steel plate is kept stable, and the anchor rod pullout tester, the backing plate are installed in sequence above the bearing steel plate, the anchor rod passes through the anchor rod pullout tester, the backing plate, and then the angle of the anchor rod pullout tester is adjusted through the level gauge, so that the center line of the anchor rod pullout tester and the axis of the anchor rod coincide, the nut is set on the anchor rod passing through the backing plate, and the backing plate, the anchor rod pullout tester and the bearing steel plate are fixed and pressed by screwing the nut, a little hydraulic oil is injected into the four hydraulic props through the hydraulic pump, and the oil pressure of the four hydraulic props is kept at a pressure value through the operation panel, when the pullout test is carried out, the anchor rod pullout tester can effectively react the pullout force on the bearing steel plate, and the pullout test can be carried out, and during the test, every time one level of pullout force is applied, the oil pressure of the four hydraulic props is observed through the operation panel, if there is a difference, the pressure is adjusted to a value through the control button, and then the test is continuously carried out until the test is finished, the successful test is ensured, and the accuracy of the test is ensured, and the device is suitable for various complex and poor geological conditions of rock mass. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0012] Fig. 1 It is the structural schematic diagram of the utility model.

[0013] Fig. 2 It is the use state schematic diagram of the utility model.

[0014] The components in the attached diagram are labeled as follows: 1. Hydraulic support; 2. Embedded nail; 3. First resistance plate; 4. Second resistance plate; 5. Bearing steel plate; 5.1 Pull-out port; 6. Level; 7. Scale line; 8. Oil tank; 9. Oil pipe; 10. Control panel; 11. Display screen; 12. Control button; 13. Pad; 14. Anchor bolt pull-out device; 15. Anchor bolt; 16. Nut. Detailed implementation method:

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figs. 1-2 As shown, an auxiliary device for an anchor bolt pull-out device includes a hydraulic support 1, an embedded nail 2, a first resistance-increasing plate 3, a second resistance-increasing plate 4, and a horizontally arranged bearing steel plate 5. The bearing steel plate 5 is a rectangular plate used to support the anchor bolt pull-out device 14 and provide an installation position. A pull-out port 5.1 is opened through the middle of the surface of the bearing steel plate 5 to facilitate the anchor bolt 15 to pass through. In this embodiment, a hydraulic support 1 is provided at each of the four corners below the bearing steel plate 5. The cylinder of each hydraulic support 1 is fixedly connected to the lower surface of the bearing steel plate 5. The piston of each hydraulic support 1 is set vertically downward. By injecting a small amount of hydraulic oil into the four hydraulic support 1, the oil pressure of the four hydraulic support 1 is kept at a pressure value to ensure that the entire bearing steel plate 5 is subjected to uniform force.

[0017] A level 6 is installed on the upper surface of the bearing steel plate 5 near two adjacent sides, and the extension lines of the two level 6 are arranged perpendicularly. One level 6 adjusts the angle of the anchor puller 14 in the front-back direction, and the other level 6 adjusts the angle of the anchor puller 14 in the left-right direction, so that the center line of the anchor puller 14 coincides with the axis of the anchor 15.

[0018] The embedded nails 2 are vertically fixed at the bottom end of the piston rod of each hydraulic prop 1, the embedded nails 2 are embedded into the slope surface of the slope to keep the bearing steel plate 5 stable, the anchor rod pull-out tester 14 can effectively react the pulling force on the slope surface to ensure that the pulling test can be carried out, the scale line 7 is arranged on the piston rod of the hydraulic prop 1 in the length direction above the embedded nail 2, the displacement of the hydraulic prop 1 embedded into the rock mass can be obtained through the scale line 7 on the piston rod of the hydraulic prop 1, the first resistance increasing piece 3 is fixedly sleeved on the piston rod of the hydraulic prop 1 in the scale line 7 area, the first resistance increasing piece 3 plays a role in increasing resistance in the process that the piston rod of the hydraulic prop 1 is inserted into the slope surface, the second resistance increasing piece 4 is fixedly sleeved on the piston rod of the hydraulic prop 1 above the scale line 7, the area of the second resistance increasing piece 4 is greater than that of the first resistance increasing piece 3, the second resistance increasing piece 4 can further hinder the piston rod of the hydraulic prop 1 from entering the rock mass in the process that the piston rod of the hydraulic prop 1 is inserted into the slope surface, and the second resistance increasing piece 4 can limit the piston rod of the hydraulic prop 1 from being completely retracted into the cylinder body of the hydraulic prop 1 and being damaged.

[0019] The utility model also includes oil tank 8, hydraulic pump and oil pipe 9, there is hydraulic pump in oil tank 8, and the oil inlet of the cylinder body of hydraulic prop 1 is connected through oil pipe 9 with hydraulic pump, and the hydraulic oil in oil tank 8 is injected into hydraulic prop 1 through oil pipe 9 by hydraulic pump, be equipped with operating panel 10 on oil tank 8, be equipped with display screen 11 and four control buttons 12 on operating panel 10, four control buttons 12 respectively corresponding control corresponding hydraulic prop 1, and the oil pressure of each hydraulic prop 1 is displayed on display screen 11.

[0020] Working process: when carrying out pulling test on the slope surface of complex geological conditions such as uneven or rock mass, the anchor rod 15 is inserted into the pulling port 5.1 of the bearing steel plate 5 from the lower side of the bearing steel plate 5, each embedded nail 2 of the auxiliary device is inserted into the slope surface first, then the anchor rod pull-out tester 14 and the backing plate 13 are installed in sequence above the bearing steel plate 5, the anchor rod 15 passes through the anchor rod pull-out tester 14 and the backing plate 13, the nut 16 is sleeved on the anchor rod 15 passing through the backing plate 13, and the backing plate 13, the anchor rod pull-out tester 14 and the bearing steel plate 5 are fixed and pressed by screwing the nut 16;

[0021] Then the angle of the anchor rod pull-out tester 14 is adjusted through the level 6, so that the center line of the anchor rod pull-out tester 14 and the axis of the anchor rod 15 coincide, and the four control buttons 12 are pressed to inject a little hydraulic oil into the four hydraulic props 1 respectively, and the oil pressure of the four hydraulic props 1 is kept at a pressure value through the operating panel 10.

[0022] The anchor rod puller 14 is started to carry out the test, and the manual hydraulic pump is used to pressurize. The pull test is generally divided into multiple stages of pressurization. When each stage is applied, it is static for a period of time. During the period of time, the oil pressure of the four hydraulic props 1 is observed through the operation panel 10. If there is a difference, the pressure is adjusted to a value through the control button 12, and then the test is continued. The pulling force and the displacement are recorded. The above is done for each stage until the test is completed, so as to ensure the successful test and the accuracy of the test.

[0023] When the pulling displacement is calculated, the displacement of the hydraulic prop 1 embedded in the rock mass can be obtained through the scale line 7 on the hydraulic prop 1. The total length of the anchor rod puller 14 is subtracted from the displacement of the hydraulic prop 1 embedded in the rock mass, so as to obtain the accurate pulling displacement, thereby ensuring the accuracy of the test data.

[0024] After the test is completed, the oil pressure of the hydraulic prop 1 is unloaded through the operation panel 10. The hydraulic prop 1 is manually retracted until it is retracted to the second resistance increasing piece 4. The oil pipe 9 is removed, and the auxiliary device is retracted.

[0025] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An auxiliary device for an anchor puller, characterized in that It includes hydraulic props, embedded nails, first resistance increasing sheets, second resistance increasing sheets and horizontally arranged bearing steel plates; a pulling opening is formed in the middle of the plate surface of the bearing steel plate, at least three hydraulic props are arranged uniformly around the bottom of the bearing steel plate, the cylinder body of the hydraulic prop is fixedly connected with the lower plate surface of the bearing steel plate, and the movable column of the hydraulic prop is arranged vertically downward; the embedded nail is fixed vertically at the bottom end of the movable column of each hydraulic prop, the scale line is arranged along the length direction on the movable column of the hydraulic prop above the embedded nail, the first resistance increasing sheet is fixedly sleeved on the scale line area of the movable column of the hydraulic prop, and the second resistance increasing sheet is fixedly sleeved on the movable column of the hydraulic prop above the scale line.

2. An auxiliary device for an anchor rod puller according to claim 1, characterized in that The bearing steel plate is a rectangular plate, one hydraulic prop is arranged at each of the four corners below the bearing steel plate, the cylinder body of each hydraulic prop is fixedly connected with the lower plate surface of the bearing steel plate, and the movable column of each hydraulic prop is arranged vertically downward.

3. An auxiliary device for an anchor rod puller according to claim 2, characterized in that A level is arranged on the upper surface of the bearing steel plate near each of the two adjacent sides, and the extension lines of the two levels are arranged vertically.

4. An auxiliary device for an anchor rod puller according to claim 1, characterized in that, It further includes an oil tank, a hydraulic pump and an oil pipe, the hydraulic pump is arranged in the oil tank, and the oil inlet of the cylinder body of the hydraulic prop is connected with the hydraulic pump through the oil pipe.

5. An auxiliary device for an anchor rod puller according to claim 4, characterised in that, An operation panel is arranged on the oil tank, and a display screen and control buttons are arranged on the operation panel.

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