CN208254980U - A kind of static-load testing device of anchor pole - Google Patents
A kind of static-load testing device of anchor pole Download PDFInfo
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- CN208254980U CN208254980U CN201820862272.6U CN201820862272U CN208254980U CN 208254980 U CN208254980 U CN 208254980U CN 201820862272 U CN201820862272 U CN 201820862272U CN 208254980 U CN208254980 U CN 208254980U
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Abstract
The utility model discloses a kind of static-load testing devices of anchor pole, belong to anchor pole performance detection field, it passes through setting high pressure pumping station, hydraulic elongator, movable bearing support and connection component Corresponding matching, so that one end of test anchor pole can realize fixation by way of anchor pole fixture nut and stretcher chuck Corresponding matching, the other end is realized and is fixed by movable bearing support and connection component matching, and the internal diameter of the distance between mobile base and hydraulic elongator and stretcher chuck is adjustable, so as to be effectively applicable to the test of different dimension test anchor pole static mechanical properties.The anchor pole static-load testing device of the utility model, its apparatus structure is simple, test operation is easy, easy to set up and control, the fixation and test that large scale, high intensity, polytypic anchor pole can effectively be met, greatly improve the scope of application of static-load testing device, improve the precision and efficiency of test, the cost for reducing test, has good promotion and application value.
Description
Technical Field
The utility model belongs to stock performance detection area, concretely relates to static load test device of stock.
Background
With the continuous development of the infrastructure of China, the design and construction of various river-crossing bridges and sea-crossing bridges are endless, and bridges with the design service life and/or large-tonnage design loads of hundreds of years are more rare. Along with the change of bridge application environment and the requirement of service life, higher requirements are put forward on the design scheme and the performance of parts in the bridge design and construction process.
In the process of constructing the bridge, especially in the process of constructing the cable-stayed bridge, the anchor rod is widely applied, and plays an important role in the stability of bearing load of the bridge and the service life of the bridge. Along with the increase of bridge design service life and/or tonnage design load, the requirement on the high-strength anchor rod for connecting the bridge steel beam and the concrete tower column is higher, so that the strength and the size of the anchor rod need to be continuously increased, the static mechanical property of the anchor rod needs to be tested before the actual application of the anchor rod in order to ensure that the static mechanical property of the anchor rod meets the requirements of design and actual application.
In the prior art, the test on the static mechanical property of the anchor rod is usually obtained by fixing two ends of the anchor rod and applying a static load, but with the increasing of the strength and the size of the anchor rod, a new requirement is also provided for the application mode of the static load, the loading is usually carried out in a step-by-step pressurizing mode, for example, the step-by-step pressurizing is carried out to 50%, 75%, 100%, 150% and the like of the designed load in sequence, and the pressurizing process of each step usually needs to carry out the pressure maintaining for a certain time, for example, the pressure maintaining is carried out for 3 min; along with the change of a test method, higher requirements are provided for a static load test device of the anchor rod, the static load test device is often required to provide larger tension load and multistage pressurization control, the existing anchor rod test device is difficult to fully realize, the existing test device is often only suitable for the anchor rod with a specific size model, the size of the test anchor rod is often smaller, when the anchor rods with different sizes are required to be tested, the effective fixation of the anchor rod can be realized only by replacing a specific connector, so that the test efficiency and the test precision of the static mechanical property of the anchor rod are inevitably reduced, and the design and the application of the anchor rod are influenced; in short, the existing static load test device is difficult to meet the static mechanical property detection of large-size, high-strength and multi-type anchor rods, and has great application limitation.
SUMMERY OF THE UTILITY MODEL
To the above defect or the improvement demand of prior art, the utility model provides a static load test device of stock, it is through setting up high-pressure pumping station, the hydraulic stretching ware, movable support and coupling assembling correspond the matching, make the one end accessible stock fixation nut of experimental stock and the form that the stretcher chuck corresponds the matching and realize fixedly, the other end matches through movable support and coupling assembling and realizes fixedly, and the distance between movable base and the hydraulic stretching ware is adjustable, the internal diameter of stretcher chuck is also adjustable, thereby not only can effectively realize the test of the static mechanical properties of stock, can also effectively be applicable to the test of different length dimension and different external diameter dimension's experimental stock, promote the precision and the efficiency and the scope that is applicable of static load test device test, reduce the cost of test.
In order to achieve the purpose, the utility model provides a static load test device of an anchor rod, which is used for testing the static mechanical property of the anchor rod and comprises a high-pressure pump station and a double-punch riveting device, and is characterized in that the static load test device also comprises a hydraulic stretcher and a movable base; wherein,
the hydraulic stretcher is horizontally arranged and comprises a body, a hydraulic cylinder and a stretcher chuck which are coaxially arranged in sequence along an axis, the body is fixedly arranged, a first through hole with the horizontal axis is formed in the middle of the body, the hydraulic cylinder is coaxially sleeved on the periphery of the body, the stretcher chuck is arranged on one side of the hydraulic cylinder, which is far away from the body, the stretcher chuck is annular, a second through hole coaxial with the first through hole is formed in the middle of the hydraulic cylinder, and the inner diameter of the second through hole can be adjusted according to the outer diameter of the test anchor rod; and is
The movable base is arranged on one side of the stretcher chuck, the distance between the movable base and the hydraulic stretcher can be adjusted according to the length of the test anchor rod, the movable base comprises two side plates which are vertically arranged oppositely, third through holes coaxial with the second through holes are respectively formed in the two side plates, and a connecting assembly is arranged corresponding to the third through holes; and
high-pressure power unit sets up one side of hydraulic pressure elongator, it is connected through defeated oil pipe and hydrovalve the pneumatic cylinder is in order to realize the hierarchical loading of the experimental load of hydraulic pressure elongator, just the setting of two drifts is riveted the ware and is in hydraulic pressure elongator with one side between the movable base, it can be used for carry out the multiunit mark on the outer length direction of test stock, then the one end of test stock can pass stretch into behind the second through-hole in the first through-hole and with the elongator chuck is fixed, just the other end of test stock can pass two in proper order on the curb plate the third through-hole with coupling assembling connects fixedly, thereby the accessible the hierarchical loading of hydraulic pressure elongator is accomplished the static mechanical properties survey of test stock.
As the utility model discloses a further improvement, correspond experimental stock can match and stretch into the one end of second through-hole is provided with stock fixation nut, but stock fixation nut coaxial accordant connection is in the tip of experimental stock to stretch into along with this side tip in the second through-hole, then through changing the internal diameter of stretcher chuck can make the inner peripheral surface butt of stretcher chuck stock fixation nut's outer peripheral face, thereby realize the fixed of this side tip of experimental stock.
As a further improvement, the inner diameter adjustment seam has been seted up to one side of stretcher chuck, the inner diameter adjustment seam is seted up between the stretcher chuck both ends face and runs through its interior periphery wall, through changing the opening size of inner diameter adjustment seam can change the inner diameter size of second through-hole.
As a further improvement, correspond in the periphery of stretcher chuck the both sides of internal diameter adjustment seam are provided with arch, two respectively the through-hole has been seted up to the correspondence in the arch, correspondingly, sets up and can pass two in proper order the bolt of through-hole with can match the nut that serves at this bolt, it is adjustable through rotatory this bolt the opening size of internal diameter adjustment seam.
As a further improvement of the utility model, coupling assembling is including the spherical nut and the spherical gasket that can coaxial match, one side of spherical nut is provided with the sphere arch, and it can overlap and establish in the periphery of experimental stock and with threaded connection, one side of spherical gasket is provided with the spherical recess, and it can correspond the cover and establish on the experimental stock and with not having seted up one side butt of spherical recess the curb plate deviates from one side of hydraulic pressure elongator, the accessible is screwed then the spherical nut makes the spherical arch corresponds the matching embedding in the spherical recess, thereby realizes experimental stock one end is in last fixed of mobile base.
As a further improvement of the utility model, the hydraulic stretcher with still be provided with unable adjustment base between the movable base, unable adjustment base fixes subaerial, and it includes the fixed plate of two vertical relative settings, and two the fourth through-hole has been seted up to the coaxial on the fixed plate, the fourth through-hole respectively with the second through-hole with the third through-hole coaxial line.
As a further improvement of the present invention, the movable base is provided with a guide rail between the hydraulic tensioners, the axis of the guide rail is parallel to the axis of the third through hole, just the bottom of the movable base can correspond to the guide rail and match and follow the axial reciprocating motion of the guide rail.
As a further improvement of the utility model, the guide rail is two of parallel arrangement, correspondingly, the bottom of movable base is provided with two connecting rods, two the dovetail has been seted up along the axial on the bottom surface of connecting rod respectively, and two the connecting rod can pass through respectively the dovetail and with correspond the guide rail matches.
As the utility model discloses a further improvement, two a plurality of screw holes have been seted up at the interval on the length direction of guide rail, and two a plurality of through-holes have been seted up to correspondence on the connecting rod, correspondingly, are provided with the dead bolt of lock, the dead bolt of lock can the through-hole with the screw hole is adjusted the back and is passed this through-hole and with tip accordant connection in the screw hole, thereby realize movable base removes the fixed after targetting in place.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
(1) the utility model discloses a static load test device of stock, it is through setting up high-pressure pump station, the hydraulic pressure elongator, movable support and coupling assembling correspond the matching, make the one end accessible stock fixation nut of experimental stock and the corresponding form that matches of elongator chuck realize fixing, and its other end accessible coupling assembling and the form that the movable support matches realize fixing, thereby realize the fixed at experimental stock both ends, the step-by-step loading of experimental stock test load is accomplished to the form that the rethread high-pressure pump station pressurizes step by step, and measure respectively, calculate the loaded elongation at all levels, thereby can calculate the static mechanical properties who obtains experimental stock accurately, the design and the application of supplementary stock;
(2) the utility model discloses a static load test device of stock, its stretcher chuck set to the form that can adjust according to the change of test stock external diameter, make the test device fully be applicable to the fixed of various external diameter size stocks and test, and the distance between movable base and the hydraulic stretcher can be realized through removing movable base, and then make the test device fully be applicable to the fixed of various length size stocks and test, thereby promote the application scope of test device greatly, reduce the cost of the static mechanical properties test of stock;
(3) the utility model discloses a static load test device of stock, it is through setting up guide rail and movable base phase-match, simplified the mobile control and the fixed of movable base, easy and simple to handle, control accurate, effectively guaranteed the accuracy of movable base removal and the test efficiency of stock, shortened the experimental cycle;
(4) the utility model discloses a static load test device of stock, it sets up the fixing support through corresponding the movable support, has guaranteed the stability that supports in the experimental process of experimental stock, and rivets the ware and make multiunit mark along length direction in the periphery of experimental stock through setting up two drifts, obtains the elongation of stock through the form of multiunit data averaging, has effectively promoted the measuring precision, has reduced the error of experiment;
(5) the utility model discloses a stock static test device, its device simple structure, it is easy and simple to handle, easily set up and control, can effectively satisfy the fixed and experiment of jumbo size, high strength, polytypic stock, promoted static test device's application scope greatly, promoted experimental precision and efficiency, reduced experimental cost, have better popularization and application and worth.
Drawings
Fig. 1 is a schematic overall structure diagram of a static load test device of an anchor rod in an embodiment of the present invention;
fig. 2 is a structural sectional view of a hydraulic pressure magic device of a static load test device of an anchor rod in the embodiment of the invention;
fig. 3 is a schematic structural view of a fixing base of the anchor rod static load test device in the embodiment of the invention;
fig. 4 is a schematic structural view of a connecting assembly of the anchor rod static load test device in the embodiment of the present invention;
in all the figures, the same reference numerals denote the same features, in particular: 1. the hydraulic tensioning device comprises a high-pressure pump station, 2, a hydraulic stretcher, 201, a hydraulic valve, 202, a tightening wrench, 203, an anchor rod fixing nut, 204, a stretcher chuck, 205, a hydraulic cylinder and 206, and a body; 3. the device comprises a fixed base, 4 test anchor rods, 5 guide rails, 6 double-punch riveting devices, 7 connecting assemblies, 701 spherical nuts, 702 spherical gaskets; 8. the locking bolt comprises 9 parts of a movable base, 901 parts of a first side plate, 902 parts of a second side plate, 903 parts of a connecting rod; 10. and (7) conveying the oil pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
The utility model discloses the static load test device of stock in the preferred embodiment is as shown in fig. 1, it is preferred to include high-pressure pumping station 1, hydraulic stretcher 2, unable adjustment base 3, movable base 9, guide rail 5 and two drift are riveted and are hit ware 6, wherein, preferably through defeated oil pipe 10 intercommunication between high-pressure pumping station 1 and the hydraulic stretcher 2, by the oil pressure in the high-pressure pumping station 1 control hydraulic stretcher 2, thereby come the size of static load in the control hydraulic stretcher 2 and the step-by-step loading of static load, screw thread has been seted up respectively in the both ends periphery of experimental stock 4 in the preferred embodiment, so the form of accessible threaded connection realizes the fixed of test in-process both ends.
Further, the hydraulic tensioner 2 in the preferred embodiment is as shown in fig. 2, and includes a hydraulic valve 201, a tightening wrench 202, an anchor rod fixing nut 203, a tensioner chuck 204, a hydraulic cylinder 205 and a body 206, wherein the body 206 is fixedly disposed, a through hole is formed in the middle of the body for testing one end of the anchor rod 4 to penetrate correspondingly, the hydraulic cylinder 205 is correspondingly and coaxially assembled on the outer circumference of one end of the body 206, and the tensioner chuck 204 is coaxially disposed on one side of the hydraulic cylinder, which is away from the body 206; further, the tensioner chuck 204 in the preferred embodiment is of an annular structure, the middle of the tensioner chuck is hollow to correspondingly accommodate the anchor rod fixing nut 203, the anchor rod fixing nut 203 in the preferred embodiment can be replaced according to the outer diameter of the test anchor rod 4, the tensioner chuck can be correspondingly matched and connected to the outer periphery of one end of the test anchor rod 4 in a threaded connection mode, and the fixing of one end of the test anchor rod 4 can be realized by fixing the anchor rod fixing nut 203; further, the tensioner chuck 204 is correspondingly set in a form of variable inner diameter, and the inner diameter of the tensioner chuck can be correspondingly adjusted according to the change of the outer diameter of the anchor rod fixing nut 203, so that the inner wall surface of the tensioner chuck 204 can correspondingly abut against the outer peripheral surface of the anchor rod fixing nut 203, and the anchor rod fixing nut 203 is fixed.
Further, in a preferred embodiment, the inner diameter of the tensioner chuck 204 is controlled by a tightening wrench 202 provided at one side of the outer circumference thereof, the inner diameter of the tensioner chuck 204 is reduced by screwing in the tightening wrench 202, and the inner diameter of the tensioner chuck 204 is increased when the tightening wrench 202 is loosened; further preferably, the internal diameter adjustment seam has been seted up to one side of elongator chuck 204, set up the opening that runs through inside and outside perisporium between the both ends face of elongator chuck 204 promptly, size through changing the internal diameter adjustment seam, can correspond the internal diameter size that changes elongator chuck 204, then be adapted to the matching butt with different external diameter size's stock fixation nut 203, correspondingly, it sets up the form that matches to set up to bolt and nut to tighten spanner 202, be provided with the arch on the both ends outer peripheral face of internal diameter adjustment seam respectively, correspond respectively on two archs and seted up the through-hole, then the bolt passes behind two through-holes in proper order with nut accordant connection, then the size of internal diameter adjustment seam can be realized to the elasticity through the bolt, change the size of elongator chuck 204 internal diameter promptly. Of course, the stretcher chuck 204 is not limited to the above-described form, and may be any other form as long as the inner diameter of the stretcher chuck 204 can be adjusted as needed.
Further, one side of the tensioner chuck 204 is correspondingly connected to the hydraulic cylinder 205 in a matching manner, and can be driven by the hydraulic cylinder 205 to move along the axial direction, that is, the tensioner chuck 204 can correspondingly apply a static load along the axial direction to the anchor rod fixing nut 203 on the inner side thereof and the test anchor rod 4 connected in the anchor rod fixing nut 203, so as to test the static mechanical property of the anchor rod.
Further, a hydraulic valve 201 is arranged on the hydraulic cylinder 205, and is connected with the high-pressure pump station 1 through an oil pipeline 10 to control the on-off of an oil path, change the magnitude of a test load in the hydraulic stretcher 2, and realize the graded loading of the test load, wherein in the preferred embodiment, the test load can be loaded to 10% of the design load, then the test load can be loaded to 50%, 75%, 100%, 150% and the like of the design load in a graded manner, and preferably, the test load is kept for 3min after each grade of loading; of course, the magnitude of each stage of test load is not limited to the above-mentioned form, and it may also be preferred to be another grading form according to the actual needs, such as 20%, 40%, 60%, 80%, 100%, 120% of the design load, and so on, which is not described herein in detail, and the time for load retention after each stage of load may also be preferred to be another value according to the actual needs, such as 2min, 5min, 10min, and so on, which is not described herein in detail.
Further, one end of the test anchor rod 4 is fixed on one side end of the hydraulic stretcher 2, and a movable base 9 capable of fixing the other end of the test anchor rod 4 is arranged at a position at a certain distance from the side, as shown in fig. 3, the movable base 9 in the preferred embodiment comprises a group of square side plates which are vertically arranged oppositely, namely a first side plate 901 and a second side plate 902, and four connecting rods 903, the end surfaces of the two side plates are arranged in parallel and connected into a frame-shaped structure through the four connecting rods 903, each connecting rod 903 is preferably connected at corresponding corners of the two side plates, through holes with a certain size are coaxially arranged in the middle of the two side plates, the axes of the two through holes are coaxial with the through hole in the middle of the hydraulic stretcher 2, namely coaxial with the body 206 and the stretcher chuck 204, then one end of the test anchor rod 4 can be correspondingly and fixedly connected on the hydraulic stretcher 2, and the other end thereof is fixed after passing through the, thereby realizing the fixation of both ends of the test anchor rod 4.
Further, the movable base 9 in the preferred embodiment can be fixed after moving back and forth for a certain distance along the axial direction of the through holes on the two side plates, so as to change the distance between the movable base 9 and the hydraulic stretcher 2, thereby adapting to the fixation of the test anchor rods 4 with different lengths; further, the fixing of the end of the test anchor 4 to the movable base 9 in the preferred embodiment may be achieved by a connecting assembly 7, and the connecting assembly 7 in the preferred embodiment is as shown in fig. 4, and includes a spherical nut 701 having a spherical protrusion and a spherical spacer 702 having a spherical groove, and after the spherical nut 701 and the spherical spacer 702 are coaxially aligned, the spherical protrusion may be correspondingly matched with the spherical groove of the spherical spacer 702; further, the connecting assembly 7 is arranged on one side of the upper side plate of the movable base 9, which is away from the hydraulic stretcher 2, namely one side of the first side plate 901, which is away from the hydraulic stretcher 2, or one side of the second side plate 902, which is away from the hydraulic stretcher 2, the spherical gasket 702 and the spherical nut 701 are sequentially sleeved on the periphery of the end portion of the test anchor rod 4, and then the spherical nut 701 is screwed, so that the spherical surfaces of the spherical nut 701 and the spherical gasket 702 are respectively matched and abutted, and the end surface of the other side of the spherical gasket 702 is abutted to the surface of the corresponding side plate, thereby fixing the end portion of the; preferably, the connecting assembly 7 can be arranged between the two side plates, also on the side of the side plate facing away from the hydraulic tensioner 2, while in a preferred embodiment the connecting assembly 7 is arranged between the two side plates, as shown in fig. 1.
Further preferably, a fixed base 3 is further arranged between the movable base 9 and the hydraulic stretcher 2, and is fixedly arranged on the ground on one side of the hydraulic stretcher 2, and the structure of the fixed base is preferably as shown in the structure of the movable base 9, that is, the fixed base comprises two side plates which are oppositely arranged and four connecting rods which are arranged in parallel, the four connecting rods correspondingly connect the two side plates into a square frame structure as shown in fig. 1, through holes are coaxially arranged on the two side plates in the fixed base 3, the through holes on the two side plates of the fixed base 3 and the through holes on the two side plates of the movable base 9 are respectively arranged coaxially and are respectively collinear with the axis of the hydraulic stretcher 2, then the test anchor rod 4 can be fixed as shown in fig. 1, one end of the test anchor rod respectively penetrates through the through holes on the two side plates of the fixed base 3 and then extends into the hydraulic stretcher 2 for fixation, and the other end of the test anchor rod, and the distance between the fixed base 3 and the movable base 9 can be changed by adjusting the position of the movable base 9, so that the test anchor rod 4 with different lengths can be adapted.
Further preferably, in order to assist in completing the movement of the movable base 9 along the axial direction of the test anchor rod 4, a set of guide rails 5 is correspondingly arranged between the movable base 9 and the fixed base 3, and the axes of the two guide rails 5 are respectively parallel to the axis of the test anchor rod 4 and respectively correspond to the two connecting rods 903 on the bottom surface of the movable base 9; correspondingly, dovetail grooves which can be correspondingly sleeved and embedded on the guide rail 5 are axially formed in the bottom surfaces of the two connecting rods 903 on the bottom surface of the movable base 9, so that the movable base 9 can correspondingly slide on the guide rail 5 in a reciprocating manner, and the distance between the movable base and the hydraulic stretcher 2 is changed; furthermore, a plurality of threaded holes are formed in the length direction of the two guide rails 5 at intervals, and a plurality of through holes are correspondingly formed in the two connecting rods 903 at the bottom of the movable base 9, so that after the movable base 9 moves in place, the through holes in the connecting rods 903 can be aligned with the threaded holes in the guide rails 5, and then the locking bolts 8 are arranged to penetrate through the through holes in the connecting rods 903 and then fixed in the threaded holes in the guide rails 5 at the end parts, so that the position fixation of the movable base 9 is realized; further preferably, the number of the locking bolts 8 can be multiple, so as to ensure sufficient fixation of the position of the movable base 9.
Further, in order to assist in completing the test of the static mechanical property of the test anchor rod 4, a double-punch riveting device 6 is arranged on one side between the movable base 9 and the fixed base 3, and includes two punches with a determined distance, the distance between the mark points of the two punches is 100mm in general, however, the distance between the mark points of the two punches is not limited to the above-mentioned value, and other values, such as 80mm, 120mm, 150mm and the like, may also be preferred according to actual needs, and are not described herein again; furthermore, the double-punch riveting device 6 can be used for marking the periphery of the test anchor rod 4 before the test, the marks can be multiple groups arranged at intervals along the length direction of the anchor rod and used for measuring the intervals of the mark points after the load test, so that the expansion and contraction amount among the mark points of the test anchor rod 4 can be calculated, and finally the static mechanical property of the test anchor rod 4 can be measured.
Further, the test method for testing the static mechanical property of the test anchor rod 4 by using the static load test device described in the above preferred embodiment comprises the following steps:
s1: firstly, assembling all parts of the static load test device in place, and then sequentially enabling one end of a test anchor rod 4 to pass through holes in two side plates of the movable base 9 and through holes in two side plates of the fixed base 3 and approach to a stretcher chuck 204 at the end part of the hydraulic stretcher 2;
s2: correspondingly arranging an anchor rod fixing nut 203 with a corresponding size on the end part of the test anchor rod 4 close to the tensioner chuck 204, then extending the anchor rod fixing nut 203 and the end part of the test anchor rod 4 at the side into the hydraulic tensioner 2, aligning the outer peripheral surface of the anchor rod fixing nut 203 with the inner peripheral wall surface of the tensioner chuck 204, adjusting the tightening wrench 202 to change the inner diameter of the tensioner chuck 204, enabling the inner peripheral wall surface to cling to the outer peripheral surface of the anchor rod fixing nut 203, and fixing the anchor rod fixing nut 203, thereby realizing the fixation of the end part of the test anchor rod 4 at the side;
s3: adjusting the position of the movable base 9 to enable the movable base 9 to be close to the end part of the unfixed end of the test anchor rod 4, fixing the movable base 9 which is moved in place through at least one locking bolt 8, and adjusting the distance between the movable base 9 and the fixed base 3 to enable the distance between the two bases to be adaptive to the length of the test anchor rod 4;
s4: the end part, corresponding to one side of the movable base 9, of the test anchor rod 4 is provided with a connecting assembly 7, the end part of the test anchor rod 4 is sleeved with a spherical nut 701 and a spherical gasket 702 in a matching manner, one side edge of the spherical gasket 702 is abutted against the end surface, deviating from the hydraulic stretcher 2, of one side plate of the movable base 9, and then the spherical nut 701 is screwed to complete the fixation of the end part, corresponding to one side of the movable base 9, of the test anchor rod 4 on the;
s5: punching at least one group of mark points on the periphery of the test anchor rod 4 along the length direction by using a double-punch riveting device 6 to serve as initial metering points;
s6: controlling the high-pressure pump station 1 to start working, applying an initial load to the hydraulic stretcher 2, preferably 10% of the design load, preferably loading the initial load to 50%, 75%, 100% and 150% of the design load in a grading manner, preferably keeping the load for 3min after each grade of loading, respectively measuring and recording the distance of each group of mark points, subtracting the calibration distance of the double-punch riveting device 6 from the measured distance, and obtaining the elongation of each group of mark points under the corresponding load, thereby calculating the elongation of each group of mark points under the corresponding load;
s7: the elongation rates of the test anchor rod 4 under the corresponding load are obtained by averaging the elongation rates calculated by the multiple groups of mark points under the corresponding load, and the rigidity of the test anchor rod 4 is calculated by the elongation rates and the corresponding load, so that the static mechanical property of the test anchor rod 4 is obtained.
The utility model discloses a static load test device of stock, its simple structure, easy and simple to handle, can be applicable to the test of different length, different external diameter stock, can fully realize the fixed of test stock one end through the form that elongator chuck and stock fixation nut correspond the matching, can realize the fixed of test stock other end through the form that coupling assembling and movable base match each other, the fixed form in both ends of test stock is simple, it is firm to fix, stability is high, and movable base sets up the form that can reciprocate, the distance between its and the hydraulic elongator can be adjusted according to the length of test stock, thereby greatly promote the application scope of test device, reduce the test cost of the static mechanical properties of test stock, and rivet the measuring form of taking the mean value with the help of the two drifts and carry out the multiple spot measurement, can effectively reduce the error of test, promote the accuracy that the static mechanical properties of test stock detect, the whole test process is simple and easy to implement, the test result is high in accuracy, and the method has good popularization and application values.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A static load test device of an anchor rod is used for testing the static mechanical property of the anchor rod (4), and comprises a high-pressure pump station (1) and a double-punch riveting device (6), and is characterized by further comprising a hydraulic stretcher (2) and a movable base (9); wherein,
the hydraulic stretcher (2) is horizontally arranged and comprises a body (206), a hydraulic cylinder (205) and a stretcher chuck (204) which are sequentially and coaxially arranged along an axis, the body (206) is fixedly arranged, a first through hole with the horizontal axis is formed in the middle of the body, the hydraulic cylinder (205) is coaxially sleeved on the periphery of the body (206), the stretcher chuck (204) is arranged on one side of the hydraulic cylinder, which is far away from the body (206), the stretcher chuck (204) is annular, a second through hole coaxial with the first through hole is formed in the middle of the hydraulic stretcher chuck (204), and the inner diameter of the second through hole can be adjusted according to the outer diameter of the test anchor rod (4); and is
The movable base (9) is arranged on one side of the stretcher chuck (204), the distance between the movable base and the hydraulic stretcher (2) can be adjusted according to the length of the test anchor rod (4), the movable base (9) comprises two side plates which are vertically arranged oppositely, third through holes coaxial with the second through holes are respectively formed in the two side plates, and a connecting assembly (7) is arranged corresponding to the third through holes; and
the high-pressure pump station (1) is arranged on one side of the hydraulic stretcher (2) and is connected with the hydraulic cylinder (205) through an oil pipeline (10) and a hydraulic valve (201) to realize the staged loading of the test load of the hydraulic stretcher (2), and the double-punch riveting device (6) is arranged on one side between the hydraulic stretcher (2) and the movable base (9), which can be used for multiple marking in the direction of the outer circumference of the test anchor (4), and then one end of the test anchor (4) can be passed through the second through-hole and then be inserted into the first through-hole and fixed with the tensioner chuck (204), and the other end of the test anchor rod (4) can sequentially pass through the third through holes on the two side plates and is connected and fixed by the connecting component (7), therefore, the static mechanical property of the test anchor rod (4) can be measured by the staged loading of the hydraulic stretcher (2).
2. The dead load test device of the anchor rod according to claim 1, wherein an anchor rod fixing nut (203) is provided corresponding to one end of the test anchor rod (4) which can be inserted into the second through hole in a matching way, the anchor rod fixing nut (203) can be coaxially connected to the end of the test anchor rod (4) in a matching way and can be inserted into the second through hole along with the side end, and then the inner circumferential surface of the tensioner chuck (204) can be abutted against the outer circumferential surface of the anchor rod fixing nut (203) by changing the inner diameter of the tensioner chuck (204), so that the side end of the test anchor rod (4) can be fixed.
3. The static load test device of the anchor rod according to claim 1 or 2, wherein an inner diameter adjusting slit is formed at one side of the tensioner chuck (204), the inner diameter adjusting slit is formed between two end faces of the tensioner chuck (204) and penetrates through the inner peripheral wall of the tensioner chuck, and the inner diameter of the second through hole can be changed by changing the opening size of the inner diameter adjusting slit.
4. The device for testing the static load of the anchor rod according to claim 3, wherein the two sides of the outer periphery of the tensioner chuck (204) corresponding to the inner diameter adjusting seam are respectively provided with a protrusion, the two protrusions are correspondingly provided with through holes, correspondingly, a bolt capable of sequentially passing through the two through holes and a nut capable of being matched with one end of the bolt are arranged, and the size of the opening of the inner diameter adjusting seam can be adjusted by rotating the bolt.
5. The static load test device of stock of claim 1 or 2, wherein, coupling assembling (7) include can coaxial assorted spherical nut (701) and spherical gasket (702), one side of spherical nut (701) is provided with spherical protrusion, and it can overlap and establish in the periphery of experimental stock (4) and with threaded connection, one side of spherical gasket (702) is provided with spherical groove, and it can correspond the cover and establish on experimental stock (4) and with the one side butt that has not seted up spherical groove the curb plate deviates from one side of hydraulic pressure elongator (2), then the accessible is screwed spherical nut (701) makes spherical protrusion corresponds the matching embedding in the spherical groove, thereby realize experimental stock (4) one end is in the fixed on movable base (9).
6. The static load test device of the anchor rod according to claim 1 or 2, wherein a fixed base (3) is further arranged between the hydraulic stretcher (2) and the movable base (9), the fixed base (3) is fixed on the ground and comprises two fixed plates which are vertically arranged oppositely, a fourth through hole is coaxially formed in each of the two fixed plates, and the fourth through hole is coaxial with the second through hole and the third through hole respectively.
7. The static load test device of the anchor rod according to claim 1 or 2, wherein a guide rail (5) is arranged between the movable base (9) and the hydraulic tensioner (2), the axis of the guide rail (5) is parallel to the axis of the third through hole, and the bottom of the movable base (9) can be correspondingly matched with the guide rail (5) and can move back and forth along the axial direction of the guide rail (5).
8. The device for testing the static load of the anchor rod according to claim 7, wherein the number of the guide rails (5) is two, correspondingly, the bottom of the movable base (9) is provided with two connecting rods (903), the bottom surfaces of the two connecting rods (903) are respectively provided with a dovetail groove along the axial direction, and the two connecting rods (903) can be respectively matched with the corresponding guide rails (5) through the dovetail grooves.
9. The device for testing the static load of the anchor rod as claimed in claim 8, wherein a plurality of threaded holes are formed in the two guide rails (5) at intervals in the length direction, a plurality of through holes are correspondingly formed in the two connecting rods (903), and accordingly, a locking bolt (8) is arranged, and the locking bolt (8) can penetrate through the through holes after the through holes and the threaded holes are aligned and can be connected in the threaded holes in an end matching mode, so that the movable base (9) can be fixed after being moved in place.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820862272.6U CN208254980U (en) | 2018-06-05 | 2018-06-05 | A kind of static-load testing device of anchor pole |
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| CN201820862272.6U CN208254980U (en) | 2018-06-05 | 2018-06-05 | A kind of static-load testing device of anchor pole |
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| CN208254980U true CN208254980U (en) | 2018-12-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613887A (en) * | 2018-06-05 | 2018-10-02 | 武汉海润工程设备有限公司 | A kind of static-load testing device and its test method of anchor pole |
| CN113640114A (en) * | 2021-08-09 | 2021-11-12 | 重庆长江预应力有限公司 | Pull rod static load test system |
-
2018
- 2018-06-05 CN CN201820862272.6U patent/CN208254980U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613887A (en) * | 2018-06-05 | 2018-10-02 | 武汉海润工程设备有限公司 | A kind of static-load testing device and its test method of anchor pole |
| CN108613887B (en) * | 2018-06-05 | 2024-02-09 | 中船双瑞(洛阳)特种装备股份有限公司 | Static load test device and test method for anchor rod |
| CN113640114A (en) * | 2021-08-09 | 2021-11-12 | 重庆长江预应力有限公司 | Pull rod static load test system |
| CN113640114B (en) * | 2021-08-09 | 2024-04-26 | 重庆长江预应力有限公司 | Static load test system for pull rod |
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