Auxiliary device for monitoring accurate limiting and centering installation of anchor cable dynamometer

Abstract

The utility model provides an auxiliary device for monitoring accurate limiting and centering installation of an anchor cable dynamometer, which comprises a steel base plate, a dynamometer seat ring is positioned and installed on the outer end face of the steel base plate, a dynamometer is positioned and installed on the outer end face of the dynamometer seat ring, and a dynamometer connecting ring is positioned and installed on the outer end face of the dynamometer. A working anchorage device is positioned and mounted on the outer end surface of the dynamometer connecting ring; a steel strand to be measured is arranged in the steel base plate, the dynamometer seat ring, the dynamometer, the dynamometer connecting ring and the working anchorage device in a penetrating mode. According to the device, accurate limiting and centering of the dynamometer can be realized, so that the accuracy of the measured tension during subsequent tensioning of the steel strand is ensured, the influence of human factors is effectively overcome and eliminated, and the purposes of improving the working efficiency and enabling the assembly precision to truly reflect and exert the monitoring function of the dynamometer are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pre -stressed anchor cable installation technical field, concretely is a kind of monitoring anchor cable dynamometer accurate position centering installation's auxiliary device. BACKGROUND

[0002] The conventional installation method of monitoring anchor cable dynamometer directly connects dynamometer with steel backing plate and working anchor, i.e. dynamometer and steel backing plate and working anchor are not provided with accurate position centering device, and manual fine centering assembly is required for assembly, which is time-consuming and labor-consuming, and the assembly accuracy and quality are easily affected by human factors and difficult to guarantee, and eccentric installation is easily caused, which leads to the non-parallelism between the stress direction of steel strand during tensioning and the axis of dynamometer inner cylinder, resulting in eccentric or distorted measurement of dynamometer, and in extreme cases, the steel strand contacts the dynamometer inner cylinder during tensioning, the normal component of tensioning force is transmitted to the inner wall of dynamometer, the dynamometer is abnormally deformed, the measured value of dynamometer is seriously eccentric, and the measured value is greatly reduced compared with the true value, so the monitoring function of dynamometer cannot be truly played. SUMMARY

[0003] To solve the current technical problems, the main purpose of the utility model is to provide a kind of monitoring anchor cable dynamometer accurate position centering installation's auxiliary device, which can realize the accurate position centering of dynamometer to ensure the accuracy of measured tension of steel strand during subsequent tensioning, effectively overcome and eliminate the influence of human factors, improve work efficiency, and the assembly accuracy can truly reflect and play the monitoring function of dynamometer.

[0004] To achieve the above technical features, the utility model is implemented as follows: a kind of monitoring anchor cable dynamometer accurate position centering installation's auxiliary device, including steel backing plate, the outer end surface of the steel backing plate is positioned and installed with dynamometer seat ring, the outer end surface of the dynamometer seat ring is positioned and installed with dynamometer, the outer end surface of the dynamometer is positioned and installed with dynamometer connecting ring, and the outer end surface of the dynamometer connecting ring is positioned and installed with working anchor; the inside of the steel backing plate, dynamometer seat ring, dynamometer, dynamometer connecting ring and working anchor is provided with the steel strand to be measured.

[0005] The steel backing plate includes a backing plate body, a backing plate center hole is provided at the center part of the backing plate body, and a first stepped groove is machined on the end surface of the backing plate body matched with the dynamometer seat ring.

[0006] The dynamometer seat ring includes a conical cylinder, a seat ring center hole is machined at the center part of the conical cylinder, a first positioning column is provided at one end of the conical cylinder matched with the steel backing plate, and a second stepped groove is provided at one end of the conical cylinder matched with the dynamometer.

[0007] The force gauge comprises a force gauge body, a second positioning column arranged at one end of the force gauge body matched with the force gauge seat ring, and a third positioning column arranged at the other end of the force gauge body matched with the force gauge connecting ring.

[0008] A connecting ring center hole is formed in the center of the force gauge connecting ring, one outer end face of the connecting ring center hole is formed with a third stepped groove matched with the force gauge, and the other outer end face of the connecting ring center hole is formed with a fourth stepped groove matched with the working anchor.

[0009] When the machining size is determined, the assembly size is machined according to the clearance fit based on the outer diameter A of the working anchor and the maximum envelope diameter B of the steel strand under stress, wherein the assembly size of the inner ring diameter E of the force gauge, the inner ring diameter D of the steel backing plate, the inner ring diameter H of the force gauge seat ring and the inner ring diameter K of the force gauge connecting ring is machined according to the clearance fit based on the maximum envelope diameter B of the steel strand under stress, and the clearance error allowable range should ensure that the steel strand has no contact and scratching phenomenon with the inner ring of each component after the anchor cable is tensioned and straightened.

[0010] The assembly size of the diameter C of the first stepped groove of the steel backing plate, the diameter G of the second stepped groove of the force gauge seat ring, the diameter F of the third stepped groove and the fourth stepped groove of the force gauge connecting ring is machined according to the clearance fit based on the outer diameter A of the working anchor.

[0011] The diameter F of the two side end heads of the force gauge and the connecting end head diameter I of the first positioning column of the force gauge seat ring are machined to be smaller than or equal to the outer diameter A of the working anchor;

[0012] The clearance error allowable range of the connecting end head of the first stepped groove and the first positioning column, the connecting end head of the second stepped groove and the second positioning column, the connecting end head of the third stepped groove and the third positioning column and the fourth stepped groove and the working anchor should ensure that the end heads of each component are smoothly clamped into the stepped groove and are limited and centered.

[0013] The depth a of the first stepped groove, the second stepped groove, the third stepped groove and the fourth stepped groove is smaller than the thickness b of the first positioning column, the second positioning column and the third positioning column.

[0014] The utility model has the following beneficial effects:

[0015] 1、The monitoring anchor force gauge precise limiting installation centering auxiliary device provided by the utility model can realize the quick and precise centering installation of the force gauge by strictly controlling the machining precision of the contact parts in each assembly link, has the obvious advantages of easy operation, elimination of human factors and great improvement of work efficiency compared with the traditional installation method of the monitoring anchor force gauge.

[0016] 2. The steel backing plate facilitates subsequent positioning and installation of the load cell seat ring, thereby achieving centering and positioning of the load cell seat ring.

[0017] 3. The load cell seat ring facilitates subsequent positioning and installation of the load cell, thereby achieving positioning of the load cell.

[0018] 4. The load cell facilitates subsequent stress measurement of the steel strand 3 and facilitates center positioning of the load cell connecting ring.

[0019] 5. The load cell connecting ring facilitates subsequent center positioning and installation of the working anchor. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further described below in combination with the drawings and embodiments.

[0021] Figure 1 It is assembly structure diagram of the utility model.

[0022] Figure 2 It is split structure diagram of the utility model.

[0023] Figure 3 It is sectional view of steel backing plate of the utility model.

[0024] Figure 4 It is sectional view of load cell seat ring of the utility model.

[0025] Figure 5 It is sectional view of load cell of the utility model.

[0026] Figure 6 It is sectional view of load cell connecting ring of the utility model.

[0027] Figure 7 It is working anchor of the utility model.

[0028] Figure 8 It is size structure diagram of the utility model.

[0029] In the drawing: steel backing plate 1, load cell seat ring 2, steel strand 3, load cell 4, load cell connecting ring 5, working anchor 6;

[0030] Backing plate main body 101, first stepped groove 102, backing plate center hole 103;

[0031] Conical cylinder 201, first positioning column 202, seat ring center hole 203, second stepped groove 204;

[0032] Second positioning column 401, load cell body 402, third positioning column 403;

[0033] The third stepped groove 501, the connecting ring center hole 502, and the fourth stepped groove 503. DETAILED DESCRIPTION

[0034] The embodiments of the utility model will be further explained below with reference to the drawings.

[0035] Referring to Figures 1-8 An auxiliary device for monitoring accurate positioning and centering installation of an anchor cable dynamometer, comprising a steel backing plate 1, a dynamometer seat ring 2 is positioned and installed on the outer end face of the steel backing plate 1, a dynamometer 4 is positioned and installed on the outer end face of the dynamometer seat ring 2, a dynamometer connecting ring 5 is positioned and installed on the outer end face of the dynamometer 4, and a working anchor device 6 is positioned and installed on the outer end face of the dynamometer connecting ring 5; the inside of the steel backing plate 1, the dynamometer seat ring 2, the dynamometer 4, the dynamometer connecting ring 5 and the working anchor device 6 is provided with a steel strand 3 to be measured. Through the above-mentioned auxiliary device, during the assembly process, after the installation of the steel backing plate 1 on the anchor pier is completed, the steel strand 3 to be measured is passed through the installation sequence of the dynamometer seat ring 2, the dynamometer 4, the dynamometer connecting ring 5 and the working anchor device 6, the dynamometer seat ring base 2 is clamped into the steel backing plate 1, one end of the dynamometer 4 is clamped into the dynamometer seat ring 2, the other end of the dynamometer 4 is clamped into the one end seat groove of the dynamometer connecting ring 5, the working anchor device 6 is then clamped into the other end seat groove of the dynamometer connecting ring 2, the working clamping piece is installed and fastened, and the rapid and accurate centering installation of the dynamometer can be realized. Thus, the phenomenon of unstable assembly accuracy and low assembly efficiency caused by the direct connection of the dynamometer with the steel backing plate and the working anchor device in the traditional dynamometer installation is overcome and eliminated, the assembly efficiency is improved, the assembly accuracy truly reflects and plays the monitoring function of the dynamometer, and the purpose is achieved.

[0036] Further, the steel backing plate 1 comprises a backing plate main body 101, a backing plate center hole 103 is arranged at the center position of the backing plate main body 101, and a first stepped groove 102 is processed on the end face of the backing plate main body 101 matched with the dynamometer seat ring 2. Through the above-mentioned steel backing plate 1, the subsequent positioning and installation of the dynamometer seat ring 2 are facilitated, and the centering positioning of the dynamometer seat ring 2 is realized. During the specific installation process, the positioning of the dynamometer seat ring 2 is realized through the first stepped groove 102.

[0037] Further, the dynamometer seat ring 2 comprises a conical cylinder 201, a seat ring center hole 203 is processed at the center position of the conical cylinder 201, a first positioning column 202 is arranged at one end of the conical cylinder 201 matched with the steel backing plate 1, and a second stepped groove 204 is arranged at one end of the conical cylinder 201 matched with the dynamometer 4. Through the above-mentioned dynamometer seat ring 2, the subsequent positioning and installation of the dynamometer 4 are facilitated, and the positioning of the dynamometer 4 is realized. During the specific positioning process, the centering positioning of the dynamometer 4 is realized through the cooperation of the second stepped groove 204 and the dynamometer 4.

[0038] Further, the force gauge 4 comprises a force gauge body 402, the second positioning column 401 is arranged at one end of the force gauge body 402 matched with the force gauge seat ring 2, and the third positioning column 403 is arranged at the third stepped groove 501 matched with the force gauge connecting ring 5. The force gauge 4 is convenient for subsequent stress measurement of the steel strand 3 and central positioning of the force gauge connecting ring 5. In the specific positioning process, the third positioning column 403 is matched with the third stepped groove 501 of the force gauge connecting ring 5.

[0039] Further, the force gauge connecting ring 5 is centrally machined with the connecting ring central hole 502, one outer end face of the connecting ring central hole 502 is machined with the third stepped groove 501 matched with the force gauge 4, and the other outer end face of the connecting ring central hole 502 is machined with the fourth stepped groove 503 matched with the working anchor 6. The force gauge connecting ring 5 is convenient for subsequent central positioning and installation of the working anchor 6.

[0040] Further, when the machining size is determined, the outer diameter A of the working anchor 6 and the maximum envelope diameter B occupied by the steel strand 3 after being stressed and straightened are taken as the reference, the assembly size is machined according to the clearance fit, wherein the assembly size of the inner ring diameter E of the force gauge 4, the inner ring diameter D of the steel backing plate 1, the inner ring diameter H of the force gauge seat ring 2 and the inner ring diameter K of the force gauge connecting ring 5 is machined according to the clearance fit with the maximum envelope diameter B occupied by the steel strand 3 after being stressed and straightened as the reference, and the clearance error allowable range should ensure that there is no contact and scratching between the steel strand 3 and the inner ring of each component after the anchorage cable is stressed and straightened. Further, the positioning and installation precision of the subsequent components is ensured.

[0041] Further, the assembly size of the diameter C of the first stepped groove 102 of the steel backing plate 1, the diameter G of the second stepped groove 204 of the force gauge seat ring 2, the diameter F of the third stepped groove 501 and the fourth stepped groove 503 of the force gauge connecting ring 5 is machined according to the clearance fit with the outer diameter A of the working anchor 6 as the reference.

[0042] Further, the assembly size of the inner ring of the force gauge 4, the force gauge seat ring 2, the force gauge connecting ring 5, the steel backing plate 1 and the steel backing plate seat groove is matched according to the outer diameter of the working anchor used in the construction process and the maximum envelope diameter occupied by the steel strand after being stressed and straightened.

[0043] Further, the diameter F of the two ends of the force gauge 4 and the diameter I of the connecting end of the first positioning column 202 of the force gauge seat ring 2 are machined to be smaller than or equal to the outer diameter A of the working anchor 6; the connecting end of the first positioning column 202, the connecting end of the second positioning column 401, the connecting end of the third positioning column 403 and the gap error allowable range of the working anchor 6 are all ensured to be smoothly clamped into the stepped groove and be limited and centered.

[0044] Further, the depth a of the first stepped groove 102, the second stepped groove 204, the third stepped groove 501 and the fourth stepped groove 503 is smaller than the thickness b of the first positioning column 202, the second positioning column 401 and the third positioning column 403. Through the above-mentioned size, the end surface of the component and the bottom surface of the seat groove are fully contacted and no cavity is generated, and the tension transmission and stress requirement are met.

[0045] Further, before the force gauge is installed, it is necessary to ensure that the outer plane of the steel pad 1 of the anchor pier is perpendicular to the anchor cable hole axis, and the inner ring of the steel pad 1 and the steel pad seat groove are coaxial with the anchor cable hole.

[0046] The implementation steps of the utility model are as follows:

[0047] After the installation of the steel pad 1 of the anchor pier is completed, the force gauge seat ring 2, the force gauge 4, the force gauge connecting ring 5 and the working anchor 6 are installed in sequence through the anchor cable steel strand 3, the force gauge seat ring 2 is clamped into the seat groove of the steel pad 1, one end of the force gauge 4 is clamped into the seat groove of the force gauge seat ring 2, the other end of the force gauge 4 is clamped into the seat groove of one end of the force gauge connecting ring 5, then the working anchor 6 is clamped into the seat groove of the other end of the force gauge connecting ring 5, the working clamping piece is installed and fastened, and then the quick and accurate centering installation of the force gauge can be realized. The implementation steps are easy to operate, can eliminate the human influence factors in the assembly process, can greatly improve the assembly efficiency, and can provide guarantee for the quality of the subsequent tensioning process.

Claims

1. An auxiliary device for monitoring the precision positioning and centering installation of an anchor cable dynamometer, characterized in that, The utility model provides a steel strand force measuring device, including steel backing plate (1), the outer end surface of steel backing plate (1) is positioned and is installed with dynamometer seat ring (2), the outer end surface of dynamometer seat ring (2) is positioned and is installed with dynamometer (4), the outer end surface of dynamometer (4) is positioned and is installed with dynamometer connecting ring (5), the outer end surface of dynamometer connecting ring (5) is positioned and is installed with working anchor (6), the inside of steel backing plate (1), dynamometer seat ring (2), dynamometer (4), dynamometer connecting ring (5) and working anchor (6) is set up and is waited to measure steel strand (3) and passes through.

2. The auxiliary device for monitoring the accurate positioning and centering installation of the cable dynamometer according to claim 1, characterized in that: The steel backing plate (1) includes a backing plate body (101), a backing plate center hole (103) is arranged at the center of the backing plate body (101), and a first stepped groove (102) is processed on the end surface of the backing plate body (101) matched with the dynamometer seat ring (2).

3. The auxiliary device for monitoring the accurate positioning and centering installation of the cable dynamometer according to claim 2, characterized in that: The dynamometer seat ring (2) includes a tapered cylinder (201), a seat ring center hole (203) is processed at the center of the tapered cylinder (201), a first positioning column (202) is arranged at one end of the tapered cylinder (201) matched with the steel backing plate (1), and a second stepped groove (204) is arranged at the other end of the tapered cylinder (201) matched with the dynamometer (4).

4. The auxiliary device for monitoring the accurate positioning and centering installation of the cable dynamometer according to claim 3, characterized in that: The dynamometer (4) includes a dynamometer body (402), a second positioning column (401) is arranged at one end of the dynamometer body (402) matched with the dynamometer seat ring (2), and a third positioning column (403) is arranged at the other end of the dynamometer body (402) matched with the dynamometer connecting ring (5).

5. The auxiliary device for monitoring the accurate positioning and centering installation of the cable dynamometer according to claim 4, characterized in that: A connecting ring center hole (502) is processed at the center of the dynamometer connecting ring (5), a third stepped groove (501) is processed at one outer end surface of the connecting ring center hole (502) matched with the dynamometer (4), and a fourth stepped groove (503) is processed at the other outer end surface of the connecting ring center hole (502) matched with the working anchor (6).

6. The auxiliary device for monitoring the accurate positioning and centering installation of the cable dynamometer according to claim 5, characterized in that: When the processing size is determined, the assembly size is processed according to the clearance fit based on the outer diameter A of the working anchor (6) and the maximum envelope diameter B of the steel strand (3) under stress tension, wherein the assembly size of the inner ring diameter E of the dynamometer (4), the inner ring diameter D of the steel backing plate (1), the inner ring diameter H of the dynamometer seat ring (2), and the inner ring diameter K of the dynamometer connecting ring (5) is processed according to the clearance fit based on the maximum envelope diameter B of the steel strand (3) under stress tension, and the clearance error allowable range should ensure that the steel strand (3) has no contact and scratching with each component inner ring after the anchor cable tensioning tension.

7. The auxiliary device for monitoring the accurate positioning and centering installation of the cable dynamometer according to claim 6, characterized in that: The assembly size of the diameter C of the first stepped groove (102) of the steel backing plate (1), the diameter G of the second stepped groove (204) of the dynamometer seat ring (2), and the diameter F of the third stepped groove (501) and the fourth stepped groove (503) of the dynamometer connecting ring (5) is processed according to the clearance fit based on the outer diameter A of the working anchor (6).

8. The auxiliary device for monitoring the accurate positioning and centering installation of the cable dynamometer according to claim 1, characterized in that: The both side end head diameter F of the dynamometer (4) and the connecting end head diameter I of the first positioning column (202) of the dynamometer seat ring (2) are processed smaller or equal than the outer diameter A of the working anchor (6). The first stepped groove (102) and the connecting end of the first positioning column (202), the second stepped groove (204) and the connecting end of the second positioning column (401), the third stepped groove (501) and the connecting end of the third positioning column (403), and the fourth stepped groove (503) and the gap error allowance range of the working anchor device (6) should ensure that the end of each component is smoothly clamped into the stepped groove and is limited and centered connected; The depth a of the first stepped groove (102), the second stepped groove (204), the third stepped groove (501) and the fourth stepped groove (503) is less than the thickness b of the first positioning column (202), the second positioning column (401) and the third positioning column (403).

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