Construction project cost construction material detection equipment

Abstract

The invention discloses construction project cost construction material detection equipment which comprises deformed steel bars and two supporting frames, a bottom plate is fixedly mounted on the two supporting frames, a bending frame is fixedly mounted on the bottom plate, an upper pressure applying mechanism is mounted on the bending frame, two electric control systems are fixedly mounted in the bending frame, and the two electric control systems are electrically connected with the two electric control systems. A limiting groove is formed in the bending frame, and placing frames are installed between the two electric control systems and the limiting groove through side pressing mechanisms. The device has the advantages that when the bending test is carried out on the reinforcing steel bar, the placement area is magnetically fixed, and the two sides of the reinforcing steel bar are limited, so that the reinforcing steel bar can be effectively prevented from sliding, the clamping point can synchronously and movably clamp along with the bending of the reinforcing steel bar during the test, and the integrity of the reinforcing steel bar outside the test area is ensured; the test effect of the bending resistance test of the steel bar is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a construction material detection device for construction engineering cost. Background Art

[0002] The steel bars used in the project will be subjected to various loads, including static loads and dynamic loads. Through bending test detection, the bending strength of the steel bars under different loading conditions can be determined to ensure that the structure will not suffer serious bending damage under normal use and sudden loads.

[0003] When conducting bending tests on steel bars, since the steel bars will be subjected to greater pressure, the existing support frames are prone to deviation when limiting the steel bars. At the same time, the contact area between the steel bars and the support frames is small, which will cause uneven force and thus lead to deviations in the test results. In addition, the steel bars will slide during the bending process, so only steel bars with smooth surfaces (round steel) are suitable for testing, and steel bars with rough surfaces (rebars) will be damaged.

[0004] Therefore, a new type of construction project cost and construction material testing equipment can be used to solve the shortcomings of the existing technology. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the experimental results are inaccurate due to the sliding of steel bars, and to propose a construction material detection device for construction project cost.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A construction material detection device for construction engineering cost, comprising threaded steel and two support frames, a bottom plate fixedly mounted on the two support frames, a bending frame fixedly mounted on the bottom plate, an upper pressure mechanism mounted on the bending frame, two electric control systems fixedly mounted inside the bending frame, a limiting slot is provided inside the bending frame, and a placement frame is mounted between the two electric control systems and the limiting slot via a side pressure mechanism;

[0008] Two slide grooves and two mounting holes are provided on the two placement racks, and the mounting holes are connected with the corresponding slide grooves, a clamping plate 1 is slidably installed in one of the slide grooves on the two placement racks, and an adjustment mechanism is installed on the two clamping plates 1, and a clamping plate 2 is slidably installed in the other slide grooves on the two placement racks, and the threaded steel bar is located between the clamping plate 1 and the clamping plate 2, and a fixing mechanism used in conjunction with the electric control system is installed on the clamping plate 2;

[0009] Clamp plate 1 and clamp plate 2 are used to clamp the threaded steel bar on the left and right sides. When the threaded steel bar is subjected to force, the angle of the placement frame can change accordingly. At the same time, clamp plate 1 and clamp plate 2 slide in the slide groove in accordance with the deformation trend of the threaded steel bar, so as to reduce the clamping loss of the threaded steel bar.

[0010] In the above-mentioned construction project cost and construction material detection equipment, the interior of the bending frame is a hollow cavity, and the two sides of the bending frame are opened. Operation holes are opened on the front and rear sides of the bending frame, and the openings on both sides and the operation holes are connected to the hollow cavity.

[0011] In the above-mentioned construction project cost and construction material detection equipment, the upper pressure mechanism includes a circular hole opened on the bending frame, a hydraulic push rod is fixedly installed in the circular hole, and the driving end of the hydraulic push rod is located in the bending frame, and a pressure-resistant connecting head is fixedly installed on the driving end of the hydraulic push rod, and a pressure roller is rotatably installed on the pressure-resistant connecting head.

[0012] In the above-mentioned construction project cost and construction material detection equipment, the side pressure mechanism includes two fixed plates fixedly installed in the bending frame, the two fixed plates are located on the same horizontal line, and hydraulic rods are fixedly installed on the side where the two fixed plates are close to each other, and connecting plates are fixedly installed on the driving ends of the two hydraulic rods, and fixing components are installed on the two connecting plates.

[0013] In the above-mentioned construction project cost construction material detection equipment, the fixed component includes a bracket fixedly mounted on the connecting plate, a rotating shaft is fixedly mounted on the bracket, and two placement racks are rotatably mounted on the corresponding rotating shafts, a sliding plate is fixedly mounted on the bracket, and the sliding plate is slidably mounted in the limit groove.

[0014] In the above-mentioned construction project cost and construction material detection equipment, the adjustment mechanism includes two limit clamps fixedly installed on the outside of the placement frame, and the two limit clamps are L-shaped and symmetrically arranged, nuts are slidably installed in the two limit clamps, and a screw is threadedly installed on the nut, and the screw slides in the corresponding installation hole, and one end of the screw is fixedly connected to a clamp.

[0015] In the above-mentioned construction project cost and construction material detection equipment, the fixing mechanism includes a circular tube and a like-pole magnet fixedly installed on the side of the second clamp away from the first clamp, and the like-pole magnet is located inside the circular tube. A cylinder is provided on the outer sliding sleeve of the circular tube, and a sliding component is installed between the cylinder and the corresponding placement frame.

[0016] In the above-mentioned construction project cost construction material detection equipment, the sliding assembly includes two fixed frames fixedly mounted on the cylinder, and rotating columns are rotatably mounted on the two fixed frames. Two sliding grooves are opened on the placement frame, and the two sliding grooves are respectively located on the upper and lower sides of the corresponding mounting holes, and the two rotating columns are respectively slidably mounted in the corresponding sliding grooves, and a magnetic structure is installed in the cylinder.

[0017] In the above-mentioned construction project cost and construction material detection equipment, the magnetic structure includes an electromagnet fixedly installed in a cylinder, the magnetism of the electromagnet is the same as that of a magnet of the same polarity, and the electromagnet is electrically connected to the corresponding electric control system.

[0018] In the above-mentioned construction project cost and construction material detection equipment, semi-arc grooves are opened in the two placement racks, and the threaded steel bars are placed in the semi-arc grooves in the two placement racks.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1: This material testing equipment has the advantage of preventing the steel bars from sliding when testing them. The semi-arc groove on the placement frame can prevent the steel bars from shifting during testing. At the same time, the magnetic principle is used to clamp the two sides of the steel bars, which can limit their position during bending tests and prevent the steel bars from moving and affecting the bending test results.

[0021] 2: This material testing equipment has the advantage of preventing damage to the surface of the steel bars when testing them. Through the rotation setting of the two placement frames, when pressure is applied from above, it can rotate synchronously with the bending degree of the steel bars to prevent damaging bending of the placement points of the steel bars during the test, which will affect the test results.

[0022] 3: This material testing equipment has the advantage of preventing other areas of the steel bar from bending when testing the steel bar. Through the sliding setting of the first clamp and the second clamp, when the steel bar is bent and the placement frame makes a circular motion, the clamping point of the steel bar can be driven to perform synchronous fixed-point clamping along the bending deformation trend to prevent damage to the untested area of ​​the steel bar.

[0023] To sum up, when the present invention performs a bending test on the steel bars, the placement area is magnetically fixed and the two sides are limited, which can effectively prevent the steel bars from sliding. During the test, the clamping points can be synchronously moved and clamped along with the bending of the steel bars, thereby ensuring the integrity of the steel bars outside the test area and improving the test effect of the steel bar bending resistance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 This is a structural schematic diagram of a construction material detection device for construction project cost proposed by the present invention;

[0026] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0027] Figure 3 A top view of the present invention;

[0028] Figure 4 for Figure 3 Structural cross-section view in the AA direction;

[0029] Figure 5 for Figure 4 Schematic diagram of the three-dimensional structure;

[0030] Figure 6 It is a structural schematic diagram of a sliding slot and a placement rack;

[0031] Figure 7 for Figure 6 A schematic diagram of the structure from another perspective;

[0032] Figure 8 for Figure 7 Schematic diagram of the decomposition structure;

[0033] Fig. 9 It is a structural schematic diagram of the slideway and the limit clamp;

[0034] Fig.10 Schematic diagram of the exploded structure of electromagnet and magnet of the same sex.

[0035] In the figure: 1. support frame; 2. bottom plate; 3. bending frame; 4. threaded steel; 5. hydraulic push rod; 6. pressure roller; 7. electronic control system; 8. bracket; 9. fixing plate; 10. hydraulic rod; 11. limiting groove; 12. placing frame; 13. cylinder; 14. fixing frame; 15. screw; 16. clamping plate one; 17. clamping plate two; 18. limiting clamping plate; 19. nut; 20. rotating shaft; 21. rotating column; 22. electromagnet; 23. magnet of the same sex; 24. round tube; 25. slide groove; 26. sliding groove; 27. pressure-resistant connector; 28. connecting plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Reference Figure 1-Figure 5 , Fig.10 A construction material detection device for construction engineering cost includes threaded steel 4 and two support frames 1. A bottom plate 2 is fixedly installed on the two support frames 1. A bending frame 3 is fixedly installed on the bottom plate 2. The interior of the bending frame 3 is a hollow cavity. The bending frame 3 is opened on both sides, and operation holes are also opened on the front and rear sides of the bending frame 3. The openings on both sides and the operation holes are connected to the hollow cavity. Electric control systems 7 are fixedly installed on both sides of the operation hole behind the bending frame 3. The electric control system 7 is a system that manages and controls mechanical or electrical systems by using electronic equipment, sensors, actuators and control algorithms. Electromagnets 22 are electrically connected to the two electric control systems 7 through wires. The electric control system 7 controls the current received by the two electromagnets 22, thereby controlling the electromagnetic strength generated by the two electromagnets 22.

[0038] A circular hole is provided on the upper surface of the bending frame 3, in which a hydraulic push rod 5 is fixedly installed, and the driving end of the hydraulic push rod 5 is located in the bending frame 3. A pressure-resistant connector 27 is fixedly installed on the driving end of the hydraulic push rod 5. The pressure-resistant connector 27 is designed to withstand stress under high pressure and high temperature environments and ensure the firmness and safety of the connection. It has good vibration and impact resistance, is not easy to loosen or damage, and is easy to disassemble, so as to better detect the pressure resistance and other properties of the threaded steel 4; a pressure roller 6 is rotatably installed on the pressure-resistant connector 27, and the pressure roller 6 itself has good wear resistance and pressure resistance, and the surface of the pressure roller 6 is flat and will not cause scratches or damage to the threaded steel 4, so as to ensure the accuracy of the test results of the threaded steel 4.

[0039] A limiting groove 11 is provided in the bending frame 3, and the limiting groove 11 is located below the rear operating hole, and two sliding plates (not shown in the figure, Figure 5 As can be seen from the figure), brackets 8 are fixedly installed on the two sliding plates, and the two brackets 8 are U-shaped. A rotating shaft 20 is fixedly installed on the two brackets 8, and a placement rack 12 is rotatably installed on the two rotating shafts 20. The front shape of the two placement racks 12 is an inverted arch setting, and the side shape is a U-shape setting. The interior is a semi-arc groove setting, and the rebar 4 is placed in the two semi-arc grooves during inspection. The semi-arc grooves are matched with the curvature setting of the rebar 4, and rubber pads or sponge pads (with strong wear resistance) are fixedly set in the semi-arc grooves of the two placement racks 12, which can reduce the friction loss generated between the rebar 4 and the placement rack 12, and protect the rebar 4 from damage.

[0040] Reference Figure 6-Figure 10, two sides of the two placement racks 12 are provided with two slide grooves 25, a second clamping plate 17 is slidably installed in the rear side slide groove 25 of each placement rack 12, and a first clamping plate 16 is slidably installed in the front side slide groove 25, and two installation holes are provided on both sides of the two placement racks 12 ( Figure 6-Figure 9 It can be seen that the two mounting holes are respectively connected with the corresponding slide grooves 25, a screw 15 is rotatably installed on the side of the clamp plate 16 away from the clamp plate 2 17, and the screw 15 slides in the corresponding mounting hole, and two limiting clamps 18 are fixedly installed on the placement frame 12, and the two limiting clamps 18 are symmetrically arranged in an L shape, and a nut 19 is slidably installed between the two limiting clamps 18. Under the shape setting of the two limiting clamps 18, the nut 19 can be prevented from detaching from between the two limiting clamps 18, and the nut 19 is threadedly installed on the screw 15.

[0041] One end of the screw 15 located on the outside of the two limit clamps 18 is set as a round block with smooth edges, and the side of the round block is provided with anti-slip grooves, which can increase the friction when a person twists the screw 15 to prevent slipping; when a person manually rotates the screw 15, it can drive the clamp 1 16 to move in the direction of the threaded steel 4 with the cooperation of the nut 19, squeeze and fix it, and the threaded steel 4 is located between the clamp 1 16 and the clamp 2 17.

[0042] A like-pole magnet 23 and a circular tube 24 are fixedly installed on one side of the second clamping plate 17 away from the first clamping plate 16. The like-pole magnet 23 has the same magnetic property as the corresponding electromagnet 22, and the like-pole magnet 23 is located in the circular tube 24. A cylinder 13 is slidably sleeved outside the circular tube 24, and the cylinder 13 is located outside the placement frame 12, and the two electromagnets 22 are fixed in the corresponding cylinders 13, and the wires are all passed through the cylinders 13 and fixedly connected with the electromagnets 22; two fixed frames 14 are symmetrically fixedly installed on the upper and lower outsides of the cylinder 13, and rotating columns 21 are rotatably installed on the two fixed frames 14, and two sliding grooves 26 are provided on the two placement frames 12, and the two sliding grooves 26 are respectively located on the upper and lower sides of the corresponding mounting holes, and the two rotating columns 21 slide in the corresponding sliding grooves 26 respectively, and the length of the two sliding grooves 26 is the same as the length of the mounting holes.

[0043] When the upper pressure roller 6 applies pressure to the threaded steel bar 4, the threaded steel bar 4 will bend downward. At this time, the support points on both sides of the threaded steel bar 4 are close to each other. At this time, it is necessary to change the clamping points of the clamping plate 16 and the clamping plate 2 17. Then the clamping plate 16 and the clamping plate 2 17 will slide to the lowest point in the two mounting holes to adjust the support points caused by the bending of the threaded steel bar 4 to be close to each other.

[0044] The electromagnet 22 is energized through the electric control system 7, so that the electromagnet 22 generates magnetic force. Since the like-sex magnet 23 and the electromagnet 22 have like magnetic forces, repulsion will occur between the two. After the electromagnet 22 is energized, it will push the like-sex magnet 23 and the second clamping plate 17 to move to the side close to the first clamping plate 16, so that the second clamping plate 17 and the threaded steel 4 are abutted, and the threaded steel 4 is clamped and limited in position in cooperation with the first clamping plate 16 to prevent the threaded steel 4 from rotating.

[0045] Two fixed plates 9 are fixedly installed in the bending frame 3, and the two fixed plates 9 are located on the same horizontal line. A hydraulic rod 10 is fixedly installed on the side of the two fixed plates 9 close to each other, and a connecting plate 28 is fixedly installed on the driving end of the two hydraulic rods 10. The two connecting plates 28 are respectively fixedly installed on the lower surface of the corresponding bracket 8.

[0046] By driving the hydraulic push rod 5 to extend, the pressure roller 6 can be driven to apply pressure downward to the threaded steel bar 4, causing it to deform into a V shape (when the upper pressure is applied, the two sliding plates are respectively located at the two ends of the limit groove 11), and under the pressure applied by the pressure roller 6 in the vertical direction, the two sides of the force point of the threaded steel bar 4 will approach the same side, thereby driving the two placement racks 12 to rotate in the direction of approaching each other to prevent hard damage to the threaded steel bar 4. When the threaded steel bar 4 is subjected to force in the vertical direction and deforms into a V shape with an arc at the bottom, the pressure roller 6 applies pressure to the threaded steel bar 4, which can only press the threaded steel bar 4 into a certain V shape. shape, and does not make the threaded steel bar 4 into a U shape. When the threaded steel bar 4 is in a specific V shape (the specific requirements of the V shape are determined according to different steel bar lengths. Generally, when the angle of the V shape is less than 90 degrees, the U-bending can be performed), by driving the two hydraulic rods 10 to extend, the two brackets 8 can be driven to approach each other in the limiting groove 11 through the connecting plate 28, thereby applying a pushing force to the two sides of the V-shaped deformed threaded steel bar 4 with an arc bottom to approach each other, so that the two sides of the threaded steel bar 4 are subjected to the same thrust, so that the two sides are bent into a vertical state (the two sides of the threaded steel bar 4 are parallel to each other), so that the threaded steel bar 4 is U-shaped after the final test.

[0047] The specific operation of this device is as follows:

[0048] Fix the threaded steel bar 4: first, place the threaded steel bar 4 on the two placement racks 12 through the openings on both sides of the bending rack 3, then rotate the screw rod 15, and under the action of the nut 19, make the clamping plate 16 and the threaded steel bar 4 abut each other. At the same time, energize the electromagnet 22 through the electric control system 7 to make the electromagnet 22 generate magnetic force. Since the same-sex magnet 23 and the electromagnet 22 have the same magnetic force, repulsion will occur between the two. After the electromagnet 22 is energized, it will push the same-sex magnet 23 and the clamping plate 2 17 to move to the side close to the clamping plate 1 16, so that the clamping plate 2 17 and the threaded steel bar 4 abut each other, and cooperate with the clamping plate 1 16 to clamp and limit the threaded steel bar 4 to prevent the threaded steel bar 4 from rotating.

[0049] Apply pressure to the threaded steel bar 4 in the vertical direction: after the threaded steel bar 4 is locked, the pressure roller 6 is pushed downward by the hydraulic push rod 5 to make the pressure roller 6 and the threaded steel bar 4 contact each other, and then continue to apply pressure to the threaded steel bar 4 by the hydraulic push rod 5. As the pressure increases, the threaded steel bar 4 will bend. After the threaded steel bar 4 is bent, it will drive the two placement racks 12 to rotate on the corresponding brackets 8. Since the placement rack 12 makes a circular motion, and the bending path of the threaded steel bar 4 is non-circular, the clamping plate 16 and the clamping plate 2 17 that clamp the threaded steel bar 4 will slide on the placement rack 12, and at the same time, the nut 19, the screw rod 15, the cylinder 13, the fixing frame 14, the rotating column 21, the electromagnet 22, the same-sex magnet 23, and the round tube 24 will all move together with the clamping plate 16 and the clamping plate 2 17. This process can prevent the threaded steel bar 4 from rotating out of alignment during the bending process;

[0050] After the threaded steel bar 4 is bent to a certain extent (when the second clamping plate 17 and the first clamping plate 16 slide to the end of the slide groove 25, the end here is the lower end of the placement rack 12 after tilting, at this time, the electromagnet 22 will be controlled by the electric control system 7 to cut off the power, and the threaded steel bar 4 will lose the pressing force of the second clamping plate 17, and the second clamping plate 17 will lose the limiting effect, because the threaded steel bar 4 has been bent at this time, and the threaded steel bar 4 will not rotate after losing the limiting effect), then continue to press the threaded steel bar 4 downward;

[0051] Apply extrusion pressure to the threaded steel bars 4 in the horizontal direction: on the basis of the V-shape, stop the pressure of the pressing roller 6, and at this time, the connecting plate 28 and the bracket 8 are driven by the hydraulic rod 10 to move to the side close to each other, and at this time, horizontal pressure is applied to the V-shaped threaded steel bars 4, and this pressure can transform the V-shaped threaded steel bars 4 into U-shaped threaded steel bars 4.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A construction material detection device for construction engineering cost, comprising threaded steel (4) and two support frames (1), characterized in that: A base plate (2) is fixedly mounted on the two support frames (1), a bending frame (3) is fixedly mounted on the base plate (2), an upper pressure mechanism is mounted on the bending frame (3), two electric control systems (7) are fixedly mounted inside the bending frame (3), a limiting groove (11) is provided inside the bending frame (3), and a placement frame (12) is mounted between the two electric control systems (7) and the limiting groove (11) via a side pressure mechanism; Two slide grooves (25) and two mounting holes are provided on the two placement racks (12), and the mounting holes are connected to the corresponding slide grooves (25). A clamping plate (16) is slidably installed in one of the slide grooves (25) on the two placement racks (12), and an adjustment mechanism is installed on the two clamping plates (16). A clamping plate (17) is slidably installed in the other slide grooves (25) on the two placement racks (12), and the threaded steel bar (4) is located between the clamping plate (16) and the clamping plate (17). A fixing mechanism used in conjunction with the electric control system (7) is installed on the clamping plate (17); The arrangement of the clamping plate 1 (16) and the clamping plate 2 (17) is used to clamp the threaded steel bar (4) on the left and right sides. When the threaded steel bar (4) is subjected to force, the placement frame (12) can change its angle accordingly. At the same time, the clamping plate 1 (16) and the clamping plate 2 (17) slide in the slide groove (25) in accordance with the deformation trend of the threaded steel bar (4), so as to reduce the clamping loss suffered by the threaded steel bar (4).

2. A construction material detection device for construction project cost according to claim 1, characterized in that: The interior of the bending frame (3) is a hollow cavity, and both sides of the bending frame (3) are provided with openings. The front and rear sides of the bending frame (3) are provided with operation holes, and the openings on both sides and the operation holes are connected to the hollow cavity.

3. The construction material detection equipment for construction project cost according to claim 1 is characterized in that: The upper pressure mechanism comprises a circular hole formed on the bending frame (3), a hydraulic push rod (5) being fixedly mounted in the circular hole, and a driving end of the hydraulic push rod (5) being located in the bending frame (3), a pressure-resistant connector (27) being fixedly mounted on the driving end of the hydraulic push rod (5), and a pressure roller (6) being rotatably mounted on the pressure-resistant connector (27).

4. The construction material detection equipment for construction project cost according to claim 1 is characterized in that: The side pressure mechanism comprises two fixed plates (9) fixedly mounted in the bending frame (3), the two fixed plates (9) being located on the same horizontal line, a hydraulic rod (10) being fixedly mounted on one side of the two fixed plates (9) close to each other, a connecting plate (28) being fixedly mounted on the driving ends of the two hydraulic rods (10), and a fixing assembly being mounted on the two connecting plates (28).

5. The construction material detection equipment for construction project cost according to claim 4 is characterized in that: The fixing assembly comprises a bracket (8) fixedly mounted on a connecting plate (28), a rotating shaft (20) fixedly mounted on the bracket (8), and two placement racks (12) are both rotatably mounted on the corresponding rotating shafts (20), a sliding plate fixedly mounted on the bracket (8), and the sliding plate is slidably mounted in a limiting groove (11).

6. The construction material detection equipment for construction project cost according to claim 1, characterized in that: The adjustment mechanism comprises two limit clamps (18) fixedly mounted on the outside of the placement frame (12), and the two limit clamps (18) are both L-shaped and symmetrically arranged, nuts (19) are slidably mounted in the two limit clamps (18), a screw rod (15) is threadedly mounted on the nut (19), and the screw rod (15) slides in the corresponding mounting hole, and one end of the screw rod (15) is fixedly connected to the clamp plate (16).

7. The construction material detection equipment for construction project cost according to claim 1 is characterized in that: The fixing mechanism comprises a circular tube (24) and a magnet (23) of the same polarity fixedly mounted on the side of the second clamping plate (17) away from the first clamping plate (16), and the magnet (23) of the same polarity is located inside the circular tube (24), a cylinder (13) is slidably sleeved on the outer side of the circular tube (24), and a sliding component is installed between the cylinder (13) and the corresponding placement frame (12).

8. The construction material detection equipment for construction project cost according to claim 7 is characterized in that: The sliding assembly comprises two fixed frames (14) fixedly mounted on the cylinder (13), and a rotating column (21) is rotatably mounted on each of the two fixed frames (14). Two sliding grooves (26) are provided on the placement frame (12), and the two sliding grooves (26) are respectively located at the upper and lower sides of the corresponding mounting holes, and the two rotating columns (21) are respectively slidably mounted in the corresponding sliding grooves (26), and a magnetic structure is installed in the cylinder (13).

9. The construction material detection equipment for construction project cost according to claim 8, characterized in that: The magnetic structure comprises an electromagnet (22) fixedly mounted in a cylinder (13), the magnetism of the electromagnet (22) being the same as that of a magnet (23) of the same polarity, and the electromagnet (22) being electrically connected to a corresponding electric control system (7).

10. The construction material detection equipment for construction project cost according to claim 1, characterized in that: Semi-arc grooves are provided in the two placement racks (12), and the threaded steel bars (4) are placed in the semi-arc grooves in the two placement racks (12).

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