Welding-free steel bar meter connecting assembly

Abstract

The utility model discloses a welding-free steel bar meter connecting assembly which comprises a connecting sleeve, a temporary positioning rod, a cover plate and a steel bar meter. Two ends of the reinforcement meter are provided with reinforcement meter screwed joints; the temporary positioning rod is of a rod-shaped structure, the two ends of the temporary positioning rod are each provided with a connecting sleeve in a matched mode, each connecting sleeve is of a metal barrel-shaped structure, the connecting sleeves and the temporary positioning rod are concentrically matched, and semicircular cutting parts are arranged on the sides, away from the temporary positioning rod, of the two connecting sleeves so that semicircular notches can be formed in the connecting sleeves. The cover plate of a semicircular arc plate structure is detachably fixed to the semicircular notch of the connecting sleeve, the cover plate and the connecting sleeve are concentrically arranged with the same diameter, and the inner ring face of the end, away from the semicircular notch, of the connecting sleeve is provided with an internal thread matched with a steel bar meter threaded connector on the steel bar meter. The beneficial effects are that welding-free fixation can be realized; sleeves can be installed in advance, and installation precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel bar gauge installation, and particularly relates to a welding-free steel bar gauge connection component. Background Art

[0002] The rebar gauge (rebar stress gauge) is a vibrating-wire sensor used to be buried in hydraulic structures or other concrete structures for a long time to measure the stress of the rebar inside the structure and to simultaneously measure the temperature of the buried point. Both ends of the gauge are usually provided with rebar gauge threaded connectors for installation and rebar gauge wires for exporting measurement data.

[0003] There are two conventional ways to install a steel bar meter:

[0004] The first type: Generally, it is installed off-site and then transported to the designated location. The length of the connected steel bars is relatively long, and the steel bar meter will inevitably experience a cycle of force-release-force during the lifting and transportation process, which will have an unpredictable impact on the accuracy of the instrument.

[0005] The second method: cut the steel bars in advance to reserve a place for installing the rebar meter, then fix the rebar cage where the steel bars to be measured are located, and then install the rebar meter at the originally reserved place. However, the distance between the two sections of the measured steel bars after transportation and fixation may also change due to the slight deformation of the rebar cage, resulting in a large installation error of the rebar meter, affecting the connection and fixation of the rebar meter.

[0006] Both of the above methods are inseparable from the use of sleeves, such as the patent document with publication number CN202793654U; the sleeve is used to connect the rebar meter and the rebar, and the method usually adopted when the sleeve is used is: rebar cutting → installation of sleeve → welding → assembly, and the general process is: cut the rebar at the positioned measuring point, and then screw the two sets of sleeves on the rebar meter with threads, and then use the butt welding machine to butt weld the unthreaded end of the sleeve to the rebar to be measured that is close to it; however, during the butt welding process, it is necessary to carry large equipment such as welding cylinders or electric welders, and too many auxiliary tools are required, which is not convenient and fast enough. Utility Model Content

[0007] The utility model aims to provide a welding-free steel bar connection assembly to solve the technical problems mentioned in the above background technology.

[0008] The above technical objectives of the utility model are achieved through the following technical solutions:

[0009] A welding-free rebar gauge connection assembly comprises: a connecting sleeve, a temporary positioning rod, a cover plate, and a rebar gauge; both ends of the rebar gauge are provided with rebar gauge threaded joints; the temporary positioning rod is a rod-shaped structure, and each of its two ends is matched with a connecting sleeve, and the connecting sleeve is a metal cylinder structure, and the connecting sleeve and the temporary positioning rod are matched concentrically, and a semicircular cutout is provided on the side of the two groups of connecting sleeves away from the temporary positioning rod to form a semicircular cutout on the connecting sleeve, and the cover plate of the semicircular arc plate structure can be detachably fixed on the semicircular cutout of the connecting sleeve, and the cover plate and the connecting sleeve are concentrically and diameter-equipped, and a threaded internal thread matching the rebar gauge threaded joint on the rebar gauge is provided on the inner annular surface of the end of the connecting sleeve away from the semicircular cutout.

[0010] Further: In order to realize the detachable connection between the cover plate and the connecting sleeve, a convex strip parallel to the axial center line of the cover plate is provided on each side of the cover plate close to the semicircular cut surface, the width of the convex strip away from the cover plate side is greater than the width of the convex strip close to the cover plate side, and the semicircular cut is provided with a strip-cut concave cavity at the relative position of the two groups of convex strips, the inner contour of the concave cavity is consistent with the outer contour of the convex strip, and the convex strip slides into the concave cavity.

[0011] Further: in order to achieve a detachable connection between the cover plate and the connecting sleeve, the cover plate and the connecting sleeve are fixed by at least one set of inner hoops of the clamp.

[0012] Furthermore: in order to maintain the tightness of the connection between the cover plate and the semicircular cutout, a rubber gasket is provided on the inner annular surface of the clamp.

[0013] Furthermore: in order to make the connection between the connecting sleeve and the measured steel bar connected thereto tighter, the cover plate is provided with a penetrating countersunk threaded hole, and the thread in the countersunk threaded hole is matched with a fixing bolt of a bolt structure.

[0014] Furthermore: in order to lighten the temporary positioning rod and facilitate the movement and taking of the temporary positioning rod, the temporary positioning rod is made of a hollow rod.

[0015] Furthermore: in order to be able to install the rebar meter later, the positions of the temporary positioning rod and the rebar meter can be perfectly replaced, the length of the temporary positioning rod is consistent with the length of the rebar meter, and both ends of the temporary positioning rod are provided with threaded heads that are consistent with the size of the rebar meter threaded joints on the rebar meter.

[0016] In summary, the utility model has the following beneficial effects:

[0017] ① No need for welding and fixing: With the establishment of a detachable cover plate and a fixing bolt, when the connecting sleeve is connected to the steel bar to be measured, there is no need for welding and fixing, because the size of the threaded head and the steel bar meter threaded joint on the steel bar meter are consistent; therefore, the two ends of the temporary positioning rod can be directly screwed into the threaded inner threads of the two sets of connecting sleeves respectively to complete the connection of the two sets of connecting sleeves and the temporary positioning rod, and then the connecting sleeve and the temporary positioning rod as a whole are aligned with the two sections of the steel bars to be measured with the semicircular incision, and the steel bars to be measured are embedded into the inner annular surface of the connecting sleeve from the semicircular incision; at this time, the cover plate is installed in the semicircular incision, and the fixing bolt is locked at this time, and the fixing bolt clamps and fixes the steel bars to be measured wrapped between the connecting sleeve and the cover plate.

[0018] ② The sleeve can be installed in advance, and the installation will not affect the measurement accuracy of the rebar meter: because the installation method of the rebar stress meter is usually not allowed to be installed on site, it is generally installed off-site and then transported to the designated location; the length of the connected steel bar is relatively large, and the rebar meter will inevitably experience a cycle of force-release-force during the lifting and transportation process, which will have an unpredictable impact on the accuracy of the instrument; because the rebar meter is not installed at this time, the stress of the force-release-force cycle is borne by the temporary positioning rod, which does not affect the measurement accuracy of the rebar meter; then fix the rebar cage with the connecting sleeve and the temporary positioning rod as a whole. After fixing, the state of the rebar cage tends to be stable, so that the distance between the two sections of the measured rebar will not change. If the temporary positioning rod is not used in advance for installation, the distance between the two sections of the measured rebar after transportation and fixation may also change due to the slight deformation of the rebar cage, affecting the connection and fixation of the rebar meter; at this time, professional personnel can replace the temporary positioning rod and the rebar meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the use principle of the utility model;

[0021] Figure 3 It is a schematic diagram of the explosion structure of the connecting sleeve end in the first embodiment of the utility model;

[0022] Figure 4 It is a perspective schematic diagram of the interior of the connecting sleeve in the utility model;

[0023] Figure 5 It is a schematic diagram of the matching of the connecting sleeve and the cover plate in the first embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the cooperation between the connecting sleeve and the cover plate in the second embodiment of the utility model;

[0025] In the figure, 1. connecting sleeve; 2. temporary positioning rod; 3. cover plate; 4. fixing bolt; 5. clamp; 8. rebar meter; 9. measured rebar; 11. semicircular incision; 12. concave cavity; 13. threaded internal thread; 21. threaded head; 31. countersunk threaded hole; 32. convex strip; 81. rebar meter threaded joint; 82. rebar meter conducting wire. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Example:

[0028] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0029] Brief description of the usage process:

[0030] A welding-free rebar gauge connection assembly comprises: a connecting sleeve 1, a temporary positioning rod 2, a cover plate 3, and a rebar gauge 8; both ends of the rebar gauge 8 are provided with a rebar gauge threaded joint 81; the temporary positioning rod 2 is a rod-shaped structure, and each of its two ends is matched with a connecting sleeve 1, and the connecting sleeve 1 is a metal cylinder structure, and the connecting sleeve 1 and the temporary positioning rod 2 are concentrically matched, and a semicircular cutout is provided on the side of the two groups of connecting sleeves 1 away from the temporary positioning rod 2 to form a semicircular cutout 11 on the connecting sleeve 1, and the cover plate 3 of the semicircular arc plate structure can be detachably fixed on the semicircular cutout 11 of the connecting sleeve 1, and the cover plate 3 and the connecting sleeve 1 are concentrically and diameter-equipped, and a threaded internal thread 13 matching the rebar gauge threaded joint 81 on the rebar gauge 8 is provided on the inner annular surface of the end of the connecting sleeve 1 away from the semicircular cutout 11.

[0031] In order to realize the detachable connection between the cover plate 3 and the connecting sleeve 1, a convex strip 32 parallel to the axial center line of the cover plate 3 is respectively provided on both sides of the cover plate 3 close to the semicircular cutout 11, and the width of the convex strip 32 away from the side of the cover plate 3 is greater than the width of the convex strip 32 close to the cover plate 3. The semicircular cutout 11 is respectively provided with a strip-cut concave cavity 12 at the relative position of the two groups of convex strips 32, and the inner contour of the concave cavity 12 is consistent with the outer contour of the convex strip 32, and the convex strip 32 slides in the concave cavity 12.

[0032] In order to achieve a detachable connection between the cover plate 3 and the connecting sleeve 1 , the cover plate 3 and the connecting sleeve 1 are fixed by at least one set of clamps 5 .

[0033] In order to maintain the tightness of the connection between the cover plate 3 and the semicircular cutout 11 , a rubber gasket is provided on the inner annular surface of the clamp 5 .

[0034] In order to make the connection between the connecting sleeve 1 and the measured steel bar 9 connected thereto tighter, the cover plate 3 is provided with a penetrating countersunk threaded hole 31, and the countersunk threaded hole 31 is threadedly matched with a fixing bolt 4 with a bolt structure.

[0035] In order to lighten the temporary positioning rod 2 and facilitate the movement and taking of the temporary positioning rod 2, the temporary positioning rod 2 is made of a hollow rod.

[0036] In order to ensure that the positions of the temporary positioning rod 2 and the rebar meter 8 can be perfectly replaced when the rebar meter 8 is installed later, the length of the temporary positioning rod 2 is consistent with the length of the rebar meter 8, and both ends of the temporary positioning rod 2 are provided with threaded heads 21 that are consistent in size with the rebar meter threaded joints 81 on the rebar meter 8.

[0037] Embodiment 1 (the connecting sleeve 1 and the cover plate 3 are connected by the concave cavity 12 and the convex strip 32):

[0038] When in use, because the size of the threaded head 21 and the steel bar meter threaded joint 81 on the steel bar meter 8 is consistent, the two ends of the temporary positioning rod 2 can be directly screwed into the threaded internal threads 13 of the two sets of connecting sleeves 1 respectively, to complete the connection between the two sets of connecting sleeves 1 and the temporary positioning rod 2, and then the connecting sleeve 1 and the temporary positioning rod 2 are integrated, with the semicircular cut 11 aligned with the two sections of the measured steel bars 9, and the measured steel bars 9 are embedded into the inner annular surface of the connecting sleeve 1 from the semicircular cut 11.

[0039] At this time, the cover plate 3 is slid into the semicircular cutout 11 in such a way that the convex strip 32 is embedded in the concave cavity 12. At this time, the fixing bolt 4 is locked. The fixing bolt 4 clamps and fixes the measured steel bar 9 wrapped between the connecting sleeve 1 and the cover plate 3. At the same time, the locked fixing bolt 4 will also tighten the sleeve 1 and the cover plate 3 to prevent the convex strip 32 on the cover plate 3 from slipping out of the concave cavity 12.

[0040] The above-mentioned processes are all completed on site by the steel cage tying workers who do not have high requirements for professionalism before the steel bar construction, because the steel bar stress gauge installation method is usually not allowed to be installed on site, and it is generally installed off site and then transported to the designated location; the length of the connected steel bars is relatively large, and the steel bar gauge will inevitably experience a cycle of stress-release-stress during the lifting and transportation process, which will have an unpredictable impact on the accuracy of the instrument; because the steel bar gauge has not been installed at this time, the stress of the stress-release-stress cycle is borne by the temporary positioning rod 2, which does not affect the measurement accuracy of the steel bar gauge.

[0041] Then fix the steel cage installed with the connecting sleeve 1 and the temporary positioning rod 2. After fixing, the state of the steel cage tends to be stable, so that the distance between the two sections of the measured steel bars 9 will not change. If the temporary positioning rod 2 is not used in advance for installation, the distance between the two sections of the measured steel bars 9 after transportation and fixation may also change due to the slight deformation of the steel cage, affecting the connection and fixation of the steel bar meter 8.

[0042] At this time, professionals can loosen the two groups of fixing bolts 4 (just loosen the fixing bolts 4 without unscrewing the fixing bolts 4) to loosen the cover plate 3, the connecting sleeve 1 as a whole and the measured steel bar 9, and then unscrew the temporary positioning rod 2, and then tighten the pre-prepared steel bar meter 8 and the threaded internal threads 13 of the two groups of connecting sleeves. After tightening, re-lock the fixing bolts 4 to fix the cover plate 3, the fixing bolts 4 and the connecting sleeve 1. Because the length of the temporary positioning rod 2 is consistent with the length of the steel bar meter 8, and the two ends of the temporary positioning rod 2 are provided with threaded heads 21 of the same size as the steel bar meter threaded joints 81 on the steel bar meter 8, although the fixing bolts 4 are loosened and re-fixed, it does not affect the overall length between the two connecting sleeves 1, that is, it does not affect the previously preset installation size, so as to perfectly adapt to the distance between the two sections of measured steel bars 9, and then the steel bar meter wire 82 on the steel bar meter 8 is led out, and the steel cage equipped with the steel bar meter can be cast and formed.

[0043] Embodiment 2 (the connecting sleeve 1 and the cover plate 3 are connected by the clamp 5):

[0044] When in use, because the size of the threaded head 21 and the steel bar meter threaded joint 81 on the steel bar meter 8 is consistent, the two ends of the temporary positioning rod 2 can be directly screwed into the threaded internal threads 13 of the two sets of connecting sleeves 1 respectively, to complete the connection between the two sets of connecting sleeves 1 and the temporary positioning rod 2, and then the connecting sleeve 1 and the temporary positioning rod 2 are integrated, with the semicircular cut 11 aligned with the two sections of the measured steel bars 9, and the measured steel bars 9 are embedded into the inner annular surface of the connecting sleeve 1 from the semicircular cut 11.

[0045] At this time, buckle the cover plate 3 into the semicircular cutout 11, and lock the clamp 5 to connect and fix the connecting sleeve 1 and the cover plate 3. At this time, lock the fixing bolt 4, and the fixing bolt 4 clamps and fixes the measured steel bar 9 wrapped between the connecting sleeve 1 and the cover plate 3.

[0046] The above-mentioned processes are all completed on site by the steel cage tying workers who do not have high requirements for professionalism before the steel bar construction, because the steel bar stress gauge installation method is usually not allowed to be installed on site, and it is generally installed off site and then transported to the designated location; the length of the connected steel bars is relatively large, and the steel bar gauge will inevitably experience a cycle of stress-release-stress during the lifting and transportation process, which will have an unpredictable impact on the accuracy of the instrument; because the steel bar gauge has not been installed at this time, the stress of the stress-release-stress cycle is borne by the temporary positioning rod 2, which does not affect the measurement accuracy of the steel bar gauge.

[0047] Then fix the steel cage installed with the connecting sleeve 1 and the temporary positioning rod 2. After fixing, the state of the steel cage tends to be stable, so that the distance between the two sections of the measured steel bars 9 will not change. If the temporary positioning rod 2 is not used in advance for installation, the distance between the two sections of the measured steel bars 9 after transportation and fixation may also change due to the slight deformation of the steel cage, affecting the connection and fixation of the steel bar meter 8.

[0048] At this time, professionals can loosen the two sets of fixing bolts 4 (just loosen the fixing bolts 4 without unscrewing the fixing bolts 4) to loosen the cover plate 3, the connecting sleeve 1 as a whole and the measured steel bar 9, and then unscrew the temporary positioning rod 2, and then tighten the pre-prepared steel bar meter 8 and the threaded internal threads 13 of the two sets of connecting sleeves. After tightening, re-lock the fixing bolts 4 to fix the cover plate 3, the connecting sleeve 1 as a whole and the measured steel bar 9. Because the length of the temporary positioning rod 2 is consistent with the length of the steel bar meter 8, and the two ends of the temporary positioning rod 2 are provided with threaded heads 21 of the same size as the steel bar meter threaded joints 81 on the steel bar meter 8, although the fixing bolts 4 are loosened and re-fixed, it does not affect the overall length between the two connecting sleeves 1, that is, it does not affect the previously preset installation size, so as to perfectly adapt to the distance between the two sections of the measured steel bars 9, and then the steel bar meter wire 82 on the steel bar meter 8 is led out, and the steel cage equipped with the steel bar meter can be cast and formed.

[0049] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A welding-free steel bar connection assembly, comprising: A connecting sleeve (1), a temporary positioning rod (2), a cover plate (3), and a steel bar meter; the steel bar meter is provided with a steel bar meter threaded joint at both ends; the characteristic is that: the temporary positioning rod (2) is a rod-shaped structure, and each of its two ends is matched with a connecting sleeve (1), the connecting sleeve (1) is a metal cylindrical structure, the connecting sleeve (1) and the temporary positioning rod (2) are concentrically matched, a semicircular cutout is provided on the side of the two groups of connecting sleeves (1) away from the temporary positioning rod (2) so that a semicircular cutout (11) is formed on the connecting sleeve (1), the cover plate (3) of the semicircular arc plate structure can be detachably fixed on the semicircular cutout (11) of the connecting sleeve (1), the cover plate (3) and the connecting sleeve (1) are concentrically and diametrically arranged, and a threaded internal thread (13) that matches the steel bar meter threaded joint on the steel bar meter is provided on the inner ring surface of the end of the connecting sleeve (1) away from the semicircular cutout (11).

2. A welding-free steel bar connection assembly according to claim 1, characterized in that: The cover plate (3) is provided with a convex strip (32) parallel to the axis of the cover plate (3) on both sides of the surface close to the semicircular cutout (11); the width of the convex strip (32) away from the cover plate (3) is greater than the width of the convex strip (32) close to the cover plate (3); the semicircular cutout (11) is provided with a concave cavity (12) cut out in a strip shape at the relative position of the two groups of convex strips (32); the inner contour of the concave cavity (12) is consistent with the outer contour of the convex strip (32); and the convex strip (32) is slidably fitted in the concave cavity (12).

3. The welding-free steel bar connection assembly according to claim 1, characterized in that: The cover plate (3) and the connecting sleeve (1) are fixed by at least one set of inner hoops of clamps (5).

4. A welding-free steel bar connection assembly according to claim 3, characterized in that: A rubber gasket is provided on the inner annular surface of the clamp (5).

5. A welding-free steel bar connection assembly according to claim 2 or 3, characterized in that: The cover plate (3) is provided with a penetrating countersunk threaded hole (31), and a fixing bolt (4) with a bolt structure is threadedly matched in the countersunk threaded hole (31).

6. The welding-free steel bar connection assembly according to claim 1, characterized in that: The temporary positioning rod (2) is made of a hollow rod.

7. The welding-free steel bar connection assembly according to claim 6, characterized in that: The length of the temporary positioning rod (2) is consistent with that of the steel bar meter, and both ends of the temporary positioning rod (2) are provided with thread heads (21) that are consistent in size with the steel bar meter threaded joints on the steel bar meter.

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