Reinforcing steel bar field detection equipment for engineering management

Abstract

The invention relates to the field of reinforcing steel bar detection, and particularly provides a reinforcing steel bar field detection device for engineering management, comprising: a main anchorage device, which is provided with a first through hole for a reinforcing steel bar to pass through; the jack is arranged below the main anchorage device; the auxiliary positioning device comprises a counter-force ring arranged below the jack and an auxiliary anchorage device arranged between the counter-force ring and the jack; the auxiliary anchorage device is provided with a second through hole for the steel bar to penetrate through, and the second through hole and the first through hole are coaxially arranged. According to the scheme, the auxiliary anchorage device and the main anchorage device are arranged to conduct double-point positioning on the reinforcing steel bar together, so that the positioning precision of the reinforcing steel bar is improved, and the detection precision is improved.

Description

Technical Field

[0001] The invention relates to the field of steel bar detection, and in particular to a steel bar on-site detection device for engineering management. Background Art

[0002] The detection principle of the pull-out test is based on the principle of mechanics. By applying a pull-out force to the steel bars embedded in the concrete, the displacement of the steel bars, the change in the magnitude of the pull-out force, and the failure mode of the concrete surface are observed, thereby evaluating the bond strength between the steel bars and the concrete, as well as the bearing capacity and safety of the steel bars.

[0003] A Chinese patent document with application publication number CN117007509A discloses a device for detecting steel bar pull-out bond strength and acoustic emission data, including a load-bearing platform for placing a concrete test block, a positioning member for fixing the position of the concrete test block, a jacking mechanism (i.e., a jack) fixedly installed at the top of the positioning member, and a pull-out anchor installed at the top of the jacking mechanism.

[0004] When testing steel bars in the prior art, the anchor can only achieve single-point positioning at the top of the jack, and the positioning accuracy is low, which affects the measurement accuracy. In addition, the anchor can only anchor the steel bar at a single point, and the jack and the steel bar are not necessarily coaxial. During the application of tension, the direction of the tension will be biased from the direction of the steel bar implantation, resulting in inaccurate test results. In addition, before measuring, multiple components such as the anchor and the jack must be inserted in sequence, which is cumbersome and inconvenient to use. Summary of the invention

[0005] An object of the present invention is to improve the measurement accuracy of steel bar field detection equipment used in engineering management.

[0006] Another object of the present invention is to reduce the difficulty of operating a steel bar on-site detection device for project management.

[0007] In particular, the present invention provides a steel bar on-site detection equipment for engineering management, comprising: a main anchor, which is provided with a first through hole for the steel bar to pass through; a jack, which is arranged below the main anchor; an auxiliary positioning device, comprising a reaction ring arranged below the jack, and an auxiliary anchor arranged between the reaction ring and the jack; wherein, the auxiliary anchor is provided with a second through hole for the steel bar to pass through, and the second through hole is coaxially arranged with the first through hole.

[0008] Furthermore, the auxiliary positioning device also includes: a shell, which is arranged between the reaction ring and the jack, and a first sleeve and a second sleeve coaxial with the second through hole are arranged on the side of the shell facing the jack; wherein the second sleeve is located at the periphery of the first sleeve; a limiting end face is arranged on the inner wall of the second sleeve, and the height of the limiting end face on the second sleeve is higher than the height of the first sleeve; the auxiliary anchor is movably arranged in the first sleeve along the axial direction of the first sleeve, and the jack is embedded in the second sleeve and abuts against the limiting end face.

[0009] Furthermore, the inner wall of the first sleeve is provided with a first annular slope, which is located at the end of the first sleeve close to the jack and gradually approaches the axis of the first sleeve from the end face of the first sleeve; the outer wall surface of the auxiliary anchor is adapted to the inner wall surface of the first sleeve; the end of the auxiliary anchor close to the reaction ring passes through the shell, and a plurality of slits are formed at the other end, and each slit is connected to the second through hole.

[0010] Furthermore, the auxiliary positioning device also includes: a tension spring, which is arranged between the reaction ring and the auxiliary anchor, one end of the tension spring is fixedly connected to the reaction ring, and the other end is connected to the auxiliary anchor; multiple compression springs, which are arranged between the reaction ring and the shell, one end of each compression spring is connected to the reaction ring, and the other end is connected to the shell; wherein the multiple compression springs are evenly distributed around the tension spring.

[0011] Furthermore, the auxiliary positioning device includes: a fixing plate, which is sleeved on one end of the auxiliary anchor passing through the shell and fixedly connected to the tension spring; the fixing plate is threadedly connected to the auxiliary anchor.

[0012] Furthermore, the jack includes: a cylinder body, including an inner cylinder and an outer cylinder arranged coaxially, one end of the annular chamber formed by the inner cylinder and the outer cylinder is closed, and the other end is open; a piston plate, which is movably arranged in the annular chamber along the axial direction of the cylinder body, and the piston plate, the inner cylinder and the outer cylinder form an oil chamber; a liquid hole, which is arranged on the wall surface of the outer cylinder and is connected to the oil chamber.

[0013] Furthermore, the on-site steel bar detection equipment for engineering management also includes: an oil pump, which is connected to the liquid hole through an oil pipe.

[0014] Furthermore, the jack also includes: a piston rod, which is sleeved on the inner cylinder, one end of which is connected to the piston plate and the other end protrudes from the end surface of the cylinder; an end cover, which is arranged at one end of the cylinder close to the main anchor to close the annular chamber; the main anchor is arranged at the end of the piston rod protruding from the cylinder.

[0015] Furthermore, the main anchor comprises: an anchor ring, which is sleeved on the piston rod; a clip, which is arranged in the anchor ring, and a first through hole is formed in the center of the clip.

[0016] Furthermore, the inner wall of the anchor ring forms a second annular slope, which gradually approaches the axis from the end of the anchor ring away from the jack; the outer wall surface of the clip is matched with the inner wall surface of the anchor ring.

[0017] The beneficial effects of the present invention are: The on-site steel bar detection equipment for engineering management of the present invention performs double-point positioning of the steel bar together with the main anchor by setting the auxiliary anchor, thereby improving the positioning accuracy of the steel bar and further improving the detection accuracy.

[0018] Furthermore, the steel bar on-site detection equipment for engineering management of the present invention, by setting a first sleeve and a second sleeve coaxial with the second through hole, and embedding the jack in the second sleeve, makes the jack and the second through hole coaxial, thereby ensuring that the force direction of the jack is consistent with the implantation direction of the steel bar, thereby improving the detection accuracy.

[0019] Furthermore, the on-site inspection equipment for steel bars used for engineering management of the present invention, by providing structures such as tension springs, compression springs and fixing plates, enables the auxiliary anchor to maintain its position before the jack starts to apply pressure, and gradually releases its position when the jack starts to apply pressure, thereby ensuring that the force direction of the jack is consistent with the implantation direction of the steel bars. At the same time, the jack and the auxiliary positioning device are connected together to form an integrated structure, which simplifies the operation steps of the on-site inspection equipment for steel bars used for engineering management and reduces the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. In the accompanying drawings: Figure 1 is a schematic structural diagram of a steel bar on-site detection device for engineering management according to an embodiment of the present invention; Figure 2 is a schematic cross-sectional view of a steel bar on-site detection device for engineering management according to an embodiment of the present invention; Figure 3 yes Figure 2 Schematic enlarged view of region A; Figure 4 yes Figure 2 Schematic enlargement of region B; Figure 5 is an exploded schematic diagram of a steel bar on-site detection device for engineering management according to an embodiment of the present invention; Figure 6 is a structural schematic diagram of an anchor ring of a steel bar on-site detection device for engineering management according to an embodiment of the present invention; Figure 7is a schematic structural diagram of an auxiliary anchor of a steel bar field detection device for engineering management according to an embodiment of the present invention; Figure 8 It is a schematic structural diagram of a housing of a steel bar on-site detection device for engineering management according to an embodiment of the present invention.

[0021] Among them: 100, main anchor; 110, anchor ring; 111, second annular inclined surface; 120, clip; 121, first through hole; 200, jack; 210, cylinder; 211, inner cylinder; 212, outer cylinder; 2121, liquid hole; 213, annular chamber; 220, piston plate; 230, oil chamber; 240, piston rod; 250, end cover; 300, oil pump; 310, oil pipe; 400, auxiliary positioning device; 410, reaction ring; 420, auxiliary anchor; 421, second through hole; 422, slit; 430, shell; 431, first sleeve; 4311, first annular inclined surface; 4312, limit ring; 432, second sleeve; 4321, limit end face; 440, tension spring; 450, compression spring; 460, fixing plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] The terms "first" and "second" herein are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0024] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0025] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Refer to the following Figures 1 to 8 To describe a steel bar on-site detection device for engineering management provided by the present invention.

[0028] Figure 1 It is a schematic structural diagram of a steel bar on-site detection device for engineering management according to an embodiment of the present invention. Figure 2 is along Figure 1 A schematic cross-sectional view of an on-site steel bar detection device for engineering management according to one embodiment of the present invention, wherein the structure of the oil pump and the oil pipe are omitted. Figure 3 yes Figure 2 Schematic enlargement of area A in the middle. Figure 4 yes Figure 2 Schematic enlargement of region B.

[0029] This embodiment first provides a steel bar on-site detection device for engineering management. The steel bar on-site detection device for engineering management generally may include: a main anchor 100, a jack 200 and an auxiliary positioning device 400.

[0030] The main anchor 100 is provided with a first through hole 121 for the steel bar to pass through. The jack 200 is arranged below the main anchor 100. The auxiliary positioning device 400 can generally include a reaction ring 410 arranged below the jack 200, and an auxiliary anchor 420 arranged between the reaction ring 410 and the jack 200. The auxiliary anchor 420 is provided with a second through hole 421 for the steel bar to pass through, and the second through hole 421 is arranged coaxially with the first through hole 121.

[0031] When the on-site steel bar inspection equipment for project management is used to inspect the steel bars, the auxiliary positioning device 400, the jack 200 and the main anchor 100 are sequentially mounted on the steel bars to be inspected. The reaction ring 410 in the auxiliary positioning device 400 is mounted on the steel bars and is in direct contact with the wall or ground where the steel bars are planted. It is used to bear the force applied by the jack 200 to the wall or ground during the inspection process, avoid direct contact between the jack 200 and the wall or ground, and ensure that there is no interference between the jack and the wall or ground. The main anchor 100 is mounted on the steel bars, and the operator applies pressure to make the main anchor 100 clamp the steel bars and limit the steel bars. The jack 200 applies a force away from the jack 200 to the main anchor 100. Since the main anchor 100 clamps the steel bars, the force applied by the jack 200 is transmitted to the steel bars, causing the steel bars to be subjected to a pulling force away from the jack 200. After the jack 200 applies pressure to a certain extent, the pressure relief of the jack 200 and whether cracks or damage occur on the wall or the ground can be observed to determine whether the bonding strength between the steel bars and the wall or the ground and the bearing capacity and safety of the steel bars are qualified.

[0032] The solution of this embodiment is to set the second through hole 421 on the auxiliary anchor 420 to be coaxial with the first through hole 121 on the main anchor 100, and use the auxiliary anchor 420 and the main anchor 100 to perform double-point anchoring of the steel bars, thereby improving the positioning accuracy of the steel bars and further improving the detection accuracy of the steel bar on-site detection equipment used for engineering management.

[0033] The main anchor 100 and the auxiliary anchor 420 are respectively arranged at the two ends of the jack 200, so that the two anchor points are dispersedly arranged on the steel bars, further improving the positioning effect of the main anchor 100 and the auxiliary anchor 420 on the steel bars.

[0034] Figure 5 It is a schematic diagram of an explosion of a steel bar on-site detection device for engineering management according to an embodiment of the present invention. Figure 6 It is a structural schematic diagram of an anchor ring of a steel bar on-site detection device for engineering management according to an embodiment of the present invention. Figure 7 It is a structural schematic diagram of an auxiliary anchor of a steel bar on-site detection device for engineering management according to an embodiment of the present invention. Figure 8 It is a schematic structural diagram of a housing of a steel bar on-site detection device for engineering management according to an embodiment of the present invention.

[0035] The auxiliary positioning device 400 may generally further include a housing 430 .

[0036] The housing 430 is disposed between the reaction ring 410 and the jack 200. The housing 430 is provided with a first sleeve 431 and a second sleeve 432 coaxial with the second through hole 421 on one side thereof facing the jack 200. The second sleeve 432 is located at the periphery of the first sleeve 431. A limiting end face 4321 is disposed on the inner wall of the second sleeve 432. The height of the limiting end face 4321 on the second sleeve 432 is higher than that of the first sleeve 431. The auxiliary anchor 420 is movably disposed in the first sleeve 431 along the axial direction of the first sleeve 431. The jack 200 is embedded in the second sleeve 432 and abuts against the limiting end face 4321.

[0037] The solution of this embodiment is to set a first sleeve 431 and a second sleeve 432 coaxial with the second through hole 421, and embed the jack 200 in the second sleeve 432, so that the jack 200 and the second through hole 421 are coaxial, thereby ensuring that the force direction of the jack 200 is consistent with the implantation direction of the steel bar, thereby improving the detection accuracy.

[0038] The height of the limiting end surface 4321 on the second sleeve 432 is set to be higher than the height of the first sleeve 431 , thereby ensuring the coaxiality of the jack 200 while avoiding interference of the jack 200 with the movement of the auxiliary anchor 420 in the first sleeve 431 .

[0039] In some preferred embodiments, the outer wall size of the jack 200 is matched with the inner wall size of the second sleeve 432, so that the jack 200 is just embedded in the second sleeve 432, thereby ensuring the coaxiality between the jack 200 and the second sleeve 432. At the same time, the jack 200 and the housing 430 and other structures are connected together to form an assembled whole, which reduces the difficulty of operation during the actual detection process.

[0040] The inner wall of the first sleeve 431 is provided with a first annular slope 4311, which is located at one end of the first sleeve 431 close to the jack 200 and gradually approaches the axis of the first sleeve 431 from the end face of the first sleeve 431. The outer wall surface of the auxiliary anchor 420 is matched with the inner wall surface of the first sleeve 431. One end of the auxiliary anchor 420 close to the reaction ring 410 passes through the housing 430, and the other end is formed with a plurality of slits 422, and each slit 422 is connected to the second through hole 421.

[0041] In the solution of this embodiment, the inner wall of the first sleeve 431 is provided with a first annular inclined surface 4311, the outer wall surface of the auxiliary anchor 420 is adapted to the inner wall surface of the first sleeve 431, and the end of the auxiliary anchor 420 away from the reaction ring 410 is also provided with a plurality of slits 422 passing through the second through hole 421. When the auxiliary anchor 420 moves in a direction close to the reaction ring 410 relative to the first sleeve 431, the end of the auxiliary anchor 420 away from the reaction ring 410 can be tightened under the pressure of the first sleeve 431, thereby improving the positioning accuracy of the auxiliary anchor 420 on the steel bar. When the auxiliary anchor 420 moves in a direction away from the reaction ring 410 relative to the first sleeve 431, the end of the auxiliary anchor 420 away from the reaction ring 410 can be relaxed, thereby facilitating the smooth positioning of the steel bar through the second through hole 421.

[0042] In some preferred embodiments, one end of the auxiliary anchor 420 away from the reaction ring 410 may be provided with four slits 422 connected to the second through hole 421. The four slits 422 form a cross shape, dividing the end of the auxiliary anchor 420 into four equal parts, so as to better clamp the steel bar under the extrusion of the first sleeve 431.

[0043] In some preferred embodiments, the auxiliary anchor 420 is made of alloy steel to improve the wear resistance and corrosion resistance of the auxiliary anchor 420 and extend its service life.

[0044] The auxiliary positioning device 400 may generally further include: a tension spring 440 and a plurality of compression springs 450 .

[0045] The tension spring 440 is disposed between the reaction ring 410 and the auxiliary anchor 420, one end of the tension spring 440 is fixedly connected to the reaction ring 410, and the other end is connected to the auxiliary anchor 420. A plurality of compression springs 450 are disposed between the reaction ring 410 and the housing 430, one end of each compression spring 450 is connected to the reaction ring 410, and the other end is connected to the housing 430; wherein the plurality of compression springs 450 are evenly distributed around the tension spring 440.

[0046] The solution of this embodiment is to set a tension spring 440 connected to the auxiliary anchor 420, and set a plurality of compression springs 450 between the reaction ring 410 and the shell 430, so that the shell 430 tends to move away from the reaction ring 410 under the action of the compression spring 450, and the auxiliary anchor 420 tends to approach the reaction ring 410 under the tension of the tension spring 440, so that the auxiliary anchor 420 tends to approach the reaction ring 410 relative to the first sleeve 431, thereby improving the positioning effect of the auxiliary anchor 420.

[0047] In the solution of this embodiment, multiple compression springs 450 are evenly arranged around the tension spring 440, so that the pressure provided by the multiple compression springs 450 to the shell 430 is evenly distributed, thereby improving the stability of the overall structure of the steel bar on-site detection equipment for engineering management.

[0048] In some preferred embodiments, the stiffness coefficient of the compression spring 450 is configured to be greater than the stiffness coefficient of the tension spring 440. Before the on-site inspection device for steel bars for engineering management begins to detect, the initial elastic force of the compression spring 450 is configured to be smaller, that is, the initial compression amount of the compression spring 450 is very small, while the initial stretching amount of the tension spring 440 is larger, and the positioning is completed by the tension of the tension spring 440. After the on-site inspection device for steel bars for engineering management begins to detect, the jack 200 begins to apply pressure, driving the housing 430 to approach the reaction ring 410, thereby increasing the compression amount of the compression spring 450 and gradually reducing the stretching amount of the tension spring 440 until it is completely eliminated. After the stretching amount of the tension spring 440 is completely eliminated, the auxiliary anchor 420 releases the limit on the steel bar (that is, the auxiliary anchor 420 no longer clamps the steel bar), thereby avoiding the auxiliary anchor 420 clamping the steel bar to affect the detection accuracy. At the same time, since the stiffness coefficient of the compression spring 450 is larger, after the stretching amount of the tension spring 440 is completely eliminated, the pressure of the compression spring 450 has increased significantly. Even when testing the steel bars implanted horizontally on the wall, after the auxiliary anchor 420 is released from the limit, the friction force can be used to ensure that the jack 200 does not slip under the action of gravity, thereby ensuring the detection accuracy.

[0049] The steel bar on-site detection equipment for engineering management provided by the solution of this embodiment can ensure that the jack 200 does not slip, whether it is detecting steel bars vertically implanted on the ground or steel bars horizontally implanted on the wall. It not only improves the detection accuracy, but also has more applicable scenarios and is more practical.

[0050] The auxiliary positioning device 400 may generally further include a fixing plate 460. The fixing plate 460 is sleeved on one end of the auxiliary anchor 420 passing through the housing 430 and is fixedly connected to the tension spring 440. The fixing plate 460 is threadedly connected to the auxiliary anchor 420.

[0051] In the solution of this embodiment, a fixing sheet 460 is provided at one end of the tension spring 440 away from the reaction ring 410, and the fixing sheet 460 is threadedly connected with one end of the auxiliary anchor 420 passing through the housing 430, so that the tension spring 440 and the auxiliary anchor 420 are connected together. The threaded connection is convenient for disassembly and assembly. In the actual detection process, the auxiliary anchor 420 with different apertures can be replaced, so that the steel bar on-site detection equipment for engineering management can detect steel bars of different diameters, thereby improving practicality.

[0052] like Figure 7-8As shown, a limit ring 4312 is formed on the inner wall of the first sleeve 431, and a corresponding step surface is formed on the auxiliary anchor 420. When the auxiliary anchor 420 moves along the axis of the first sleeve 431, after the auxiliary anchor 420 approaches the reaction ring 410 to a certain distance, the step surface of the auxiliary anchor 420 conflicts with the limit ring 4312. After the auxiliary anchor 420 moves away from the reaction ring 410 to a certain distance, the fixing plate 460 threadedly connected on the auxiliary anchor 420 conflicts with the housing 430. This prevents the auxiliary anchor 420 from slipping off the housing 430 during movement, ensures positioning accuracy, and improves structural stability.

[0053] The jack 200 may generally include: a cylinder 210 , a piston plate 220 , a liquid through hole 2121 and an oil pump 300 .

[0054] The cylinder 210 may generally include an inner cylinder 211 and an outer cylinder 212 which are coaxially arranged, and an annular chamber 213 formed by the inner cylinder 211 and the outer cylinder 212 is closed at one end and open at the other end. The piston plate 220 is movably arranged in the annular chamber 213 along the axial direction of the cylinder 210, and the piston plate 220, the inner cylinder 211 and the outer cylinder 212 form an oil chamber 230. The liquid hole 2121 is arranged on the wall surface of the outer cylinder 212 and communicates with the oil chamber 230.

[0055] In the solution of this embodiment, the cylinder 210 of the jack 200 is configured as a two-layer structure of an inner cylinder 211 and an outer cylinder 212, so that the jack 200 has a hollow structure, thereby ensuring that the steel bars can smoothly pass through the jack 200 and cooperate with the main anchor 100.

[0056] In the solution of this embodiment, by setting the piston plate 220, an annular sealed oil chamber 230 is formed between the piston plate 220 and the inner cylinder 211 and the outer cylinder 212. The annular oil chamber 230 not only makes the force on the piston plate 220 more uniform, but also ensures that the force direction is consistent with the direction of the steel bar.

[0057] like Figure 4 As shown, the liquid hole 2121 is generally arranged at a position of the outer cylinder 212 near the bottom of the oil chamber 230 to ensure the sealing of the oil chamber 230 when the piston plate 220 moves. In some embodiments, the outer cylinder 212 may also be provided with an interface at the liquid hole 2121, and the interface is threadedly connected to the oil pipe 310 to improve air tightness.

[0058] The on-site steel bar detection device for engineering management can generally further include an oil pump 300. The oil pump 300 is connected to the liquid through hole 2121 through an oil pipe 310.

[0059] The solution of this embodiment is to set up an oil pump 300, and connect the oil pump 300 to the liquid hole 2121 through the oil pipe 310, so as to pressurize the oil chamber 230 of the jack 200 by conveying oil to make the piston plate 220 move axially relative to the cylinder 210. This is not only easy to operate, but also ensures uniform and stable pressurization.

[0060] The oil pump 300 may generally be provided with a display device to display the pressure applied by the oil pump 300 in real time.

[0061] In some embodiments, the oil pump 300 can be manually controlled to increase the pressure. In other embodiments, the oil pump 300 can automatically increase the pressure to a set pressure.

[0062] The jack 200 may generally further include a piston rod 240 and an end cover 250 .

[0063] The piston rod 240 is sleeved on the inner cylinder 211, one end of which is connected to the piston plate 220, and the other end protrudes from the end surface of the cylinder 210. The end cover 250 is arranged at one end of the cylinder 210 close to the main anchor 100 to close the annular chamber 213. The main anchor 100 is arranged at one end of the piston rod 240 protruding from the cylinder 210.

[0064] In the solution of this embodiment, the open end of the annular chamber 213 is sealed by providing an end cover 250, thereby improving the air tightness of the jack 200.

[0065] like Figure 3 As shown, the piston rod 240 is sleeved on the inner cylinder 211, and the inner wall surface of the piston rod 240 contacts the radially protruding annular end surface of the inner cylinder 211, thereby reducing the friction resistance between the piston rod 240 and the inner cylinder 211. The outer wall surface of the piston rod 240 contacts the end cover 250. The inner cylinder 211 and the end cover 250 jointly clamp the piston rod 240, so that the piston rod 240 moves axially, further ensuring the coaxiality of the force application direction of the jack 200 and the steel bar implantation direction, thereby improving the detection accuracy.

[0066] In some preferred embodiments, sealing rings may be provided between the inner cylinder 211 and the piston rod 240 , and between the piston rod 240 and the end cover 250 , so as to further improve the sealing performance of the jack 200 .

[0067] The main anchor 100 may generally include an anchor ring 110 and a clip 120 .

[0068] The anchor ring 110 is sleeved on the piston rod 240. The clip 120 is disposed in the anchor ring 110, and a first through hole 121 is formed in the center of the clip 120.

[0069] In the solution of this embodiment, the anchor ring 110 is sleeved on the piston rod 240 , and the piston rod 240 is used to transfer the pressure of the oil pump 300 to the anchor ring 110 , and then the pressure is transferred to the steel bar through the clip 120 .

[0070] The clip 120 is generally made of alloy steel. When the on-site inspection equipment for steel bars for engineering management is ready to start inspection, the clip 120 is put on the steel bar by the operator and then inserted into the anchor ring 110 to tighten and limit the steel bar. In some embodiments, the clip 120 can be composed of several parts, which is convenient for installation and improves the tightening effect of the clip 120 on the steel bar.

[0071] The inner wall of the anchor ring 110 forms a second annular slope 111, and the second annular slope 111 gradually approaches the axis from the end of the anchor ring 110 away from the jack 200. The outer wall surface of the clip 120 is matched with the inner wall surface of the anchor ring 110.

[0072] The solution of this embodiment is to provide a second annular inclined surface 111 on the inner wall of the anchor ring 110 so that when the piston rod 240 applies a thrust to the anchor ring 110 away from the jack 200, the clip 120 will squeeze the steel bar more tightly under the pressure of the anchor ring 110, thereby avoiding slippage between the clip 120 and the steel bar, thereby improving the detection accuracy of the steel bar on-site detection equipment for engineering management.

[0073] The solution of this embodiment, by providing structures such as tension spring 440, compression spring 450 and fixing plate 460, enables auxiliary anchor 420 to maintain positioning before jack 200 starts to apply pressure, and gradually releases positioning when jack 200 starts to apply pressure, thereby ensuring that the force direction of jack 200 is consistent with the implantation direction of the steel bar. At the same time, jack 200 and auxiliary positioning device 400 are connected together to form an integrated structure, which simplifies the operation steps of the steel bar on-site detection equipment for engineering management and reduces the difficulty of operation.

[0074] The specific working process of the on-site steel bar detection device for engineering management provided by the present invention is described in combination with the above embodiments: The on-site inspection equipment for steel bars for project management is put on the steel bars along the direction of steel bar implantation. The steel bars first pass through the reaction ring 410 and the tension spring 440 and extend into the second through hole 421 of the auxiliary anchor 420. The steel bars continue to move relative to the auxiliary anchor 420, and use friction to drive the auxiliary anchor 420 away from the reaction ring 410, so that the end of the auxiliary anchor 420 with the slit 422 is relaxed, so as to facilitate the smooth passage of the steel bars through the auxiliary anchor 420. After passing through the second through hole 421, the steel bars enter the cylinder 210 of the jack 200, and finally pass out through the anchor ring 110 set at the top of the jack 200. At this time, the on-site inspection equipment for steel bars for project management has been completely put on the steel bars, and the reaction ring 410 has been against the wall / ground where the steel bars are planted. Afterwards, the clamp 120 is put on the steel bars by the operator and inserted into the anchor ring 110 to clamp the steel bars for limiting.

[0075] After the steel bar on-site inspection equipment for engineering management has been completely installed on the steel bar, the auxiliary anchor 420 moves along the first sleeve 431 towards the reaction ring 410 under the tension of the tension spring 440, and the end of the auxiliary anchor 420 with the slit 422 is tightened under the extrusion of the first sleeve 431, thereby limiting the position of the steel bar.

[0076] After the on-site steel bar detection equipment for engineering management starts to detect, the oil pump 300 transports oil into the oil chamber 230 through the oil pipe 310, applies pressure to the oil chamber 230, and the pressure applied by the oil chamber 230 is transmitted to the main anchor 100 through the piston plate 220 and the piston rod 240, and then transmitted to the steel bar to be detected, so that the steel bar is subjected to a pulling force away from the wall / ground. In the process of the oil pump 300 continuously applying pressure, the pressure value applied by the oil pump 300 is displayed through the display device set on the oil pump 300. After the pressure applied by the oil pump 300 reaches the strength value corresponding to the steel bar to be detected (determined according to the model and size of the steel bar), the oil pump 300 stops applying pressure and maintains the load for a certain time (in some embodiments, the time for maintaining the load can preferably be set to maintain 2 minutes). Then observe whether the change in the pressure value displayed by the display device on the oil pump 300 is within the specified range (in some embodiments, the specified range of the pressure value change can preferably be set to not more than 5%). If the change in pressure value meets the requirements, after dismantling the steel bar on-site testing equipment for project management, observe the steel bars and the wall or ground where the steel bars are planted to check whether there are cracks or local damage. If there are no cracks or local damage, the test is qualified, otherwise it is unqualified.

[0077] After the oil pump 300 starts to apply pressure, the cylinder 210 of the jack 200 moves relative to the piston in the direction close to the reaction ring 410. The cylinder 210 squeezes the housing 430 to increase the compression of the compression spring 450, thereby increasing the pressure of the compression spring 450, and at the same time, the stretching of the tension spring 440 gradually decreases until it is completely eliminated. After the stretching of the tension spring 440 is completely eliminated, the end of the auxiliary anchor 420 with the slit 422 is relaxed, and the limit on the steel bar is released to prevent the detection result from being affected. In other words, during the process of increasing the pressure of the compression spring 450, the auxiliary anchor 420 will play an anchoring role in the early stage, and the anchoring effect on the steel bar will not be cancelled until the pressure of the compression spring 450 reaches a relatively large value. At this time, due to the increase in the pressure of the compression spring 450, the jack 200 will not slip under the pressure of the compression spring 450, thereby ensuring that the jack 200 is coaxial with the steel bar, thereby improving the detection accuracy.

[0078] After the inspection of the steel bar on-site inspection equipment for engineering management is completed, the operator removes the clip 120 in the anchor ring 110, and then presses the fixing plate 460 to move the auxiliary anchor 420 into the jack 200, releases the limit on the steel bar, and finally smoothly pulls out the entire instrument.

[0079] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A steel bar on-site detection device for engineering management, characterized in that: include: A main anchor, which is provided with a first through hole for the steel bar to pass through; A jack, arranged below the main anchor; The auxiliary positioning device includes a reaction ring arranged below the jack, and an auxiliary anchor arranged between the reaction ring and the jack; wherein the auxiliary anchor is provided with a second through hole for the steel bar to pass through, and the second through hole is coaxially arranged with the first through hole.

2. The on-site steel bar detection equipment for engineering management according to claim 1 is characterized in that: The auxiliary positioning device also includes: A housing is disposed between the reaction ring and the jack, wherein a first sleeve and a second sleeve coaxial with the second through hole are disposed on a side of the housing facing the jack; wherein the second sleeve is located at the periphery of the first sleeve; The inner wall of the second sleeve is provided with a limiting end surface, and the height of the limiting end surface on the second sleeve is higher than the height of the first sleeve; The auxiliary anchor is movably disposed in the first sleeve along the axial direction of the first sleeve, and the jack is embedded in the second sleeve and abuts against the limiting end surface.

3. The on-site steel bar detection equipment for engineering management according to claim 2 is characterized in that: The inner wall of the first sleeve is provided with a first annular inclined surface, which is located at one end of the first sleeve close to the jack and gradually approaches the axis of the first sleeve from the end surface of the first sleeve; the outer wall surface of the auxiliary anchor is adapted to the inner wall surface of the first sleeve; One end of the auxiliary anchor close to the reaction ring passes through the shell, and the other end is formed with a plurality of slits, and each of the slits is communicated with the second through hole.

4. The on-site steel bar detection equipment for engineering management according to claim 2 is characterized in that: The auxiliary positioning device also includes: A tension spring is arranged between the reaction ring and the auxiliary anchor, one end of the tension spring is fixedly connected to the reaction ring, and the other end is connected to the auxiliary anchor; A plurality of compression springs are arranged between the reaction ring and the shell, one end of each compression spring is connected to the reaction ring, and the other end is connected to the shell; wherein the plurality of compression springs are evenly distributed around the tension spring.

5. The on-site steel bar detection equipment for engineering management according to claim 4 is characterized in that: The auxiliary positioning device comprises: A fixing plate, which is sleeved on one end of the auxiliary anchor passing through the housing and fixedly connected to the tension spring; The fixing plate is threadedly connected to the auxiliary anchor.

6. The on-site steel bar detection equipment for engineering management according to claim 1, characterized in that: The jack comprises: The cylinder body comprises an inner cylinder and an outer cylinder arranged coaxially, wherein one end of the annular chamber formed by the inner cylinder and the outer cylinder is closed and the other end is open; A piston plate is movably disposed in the annular chamber along the axial direction of the cylinder, and the piston plate, the inner cylinder and the outer cylinder form an oil chamber; The liquid through hole is arranged on the wall surface of the outer cylinder and is communicated with the oil cavity.

7. The on-site steel bar detection equipment for engineering management according to claim 6 is characterized in that: Also includes: An oil pump is connected to the liquid through hole through an oil pipe.

8. The on-site steel bar detection equipment for engineering management according to claim 6, characterized in that: The jack also includes: A piston rod, sleeved on the inner cylinder, with one end connected to the piston plate and the other end protruding from the end surface of the cylinder; An end cover, disposed at one end of the cylinder body close to the main anchor, to close the annular chamber; The main anchor is arranged at one end of the piston rod protruding from the cylinder.

9. The on-site steel bar detection equipment for engineering management according to claim 8, characterized in that: The main anchor comprises: An anchor ring, sleeved on the piston rod; A clip is arranged in the anchor ring, and the first through hole is formed at the center of the clip.

10. The on-site steel bar detection equipment for engineering management according to claim 9, characterized in that: The inner wall of the anchor ring forms a second annular slope, and the second annular slope gradually approaches the axis from the end of the anchor ring away from the jack; The outer wall surface of the clip is matched with the inner wall surface of the anchor ring.

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