A device for detecting the strength of building steel structures

Abstract

The present invention relates to the field of steel structure strength detection, and particularly to a building steel structure strength detection device, including a grip cylinder, a flaw detection pen, etc. For the building steel structure strength detection device of the present invention, first, the rotating frame cooperates with the limiting ring to control the polishing brush to polish and grind a specified small area on the surface coating of the building steel structure. Subsequently, the flaw detection pen can be directly pushed out to closely adhere to the surface of the building steel structure for detection work. Additionally, grinding sheets with higher hardness can be installed on the limiting ring to polish and grind the cement hard layer on the surface of the building steel structure. Moreover, through the suction machine and the suction hole structure on the limiting ring, the debris generated during grinding is promptly sucked away, achieving an environmentally friendly construction effect without smoke and dust. It solves the technical problem that when directly using the carried grinding equipment to polish and grind the existing coating or cement hard layer on the surface of the steel structure, there are phenomena such as excessive grinding range and damage to the surface of the steel structure.

Description

Technical Field

[0001] The present invention relates to the field of steel structure strength detection, and particularly to a device for detecting the strength of building steel structures. Background Art

[0002] Detecting the strength of the steel structure of existing buildings is a complex and important task, whose purpose is to evaluate the bearing capacity, material properties and structural safety of the steel structure. Generally, non-destructive testing methods (such as ultrasonic testing, magnetic particle testing, etc.) are first used, which are suitable for detecting surface or internal defects of the steel structure. In this step, only the flaw detector pen needs to be pressed tightly against the surface of the steel structure to detect the surface and internal defects of the steel structure. However, in some cases, such as when there is a coating containing ferromagnetic raw materials (such as coarse and fine aggregates, admixtures or metal fibers) or a cement hard lump layer on the surface of the steel structure, these ferromagnetic raw material substances will interfere with the instrument, resulting in inaccurate or incorrect test results. To ensure the accuracy of the test results, it is necessary to remove the protective layer to avoid interference. Therefore, it is also necessary to carry additional grinding equipment to polish and grind the coating or cement hard lump layer existing on the surface of the steel structure, so that the surface of the steel structure is exposed to the external environment for testing work, and the overall treatment steps are cumbersome;

[0003] In addition, directly using the carried grinding equipment to polish and grind the coating or cement hard lump layer existing on the surface of the steel structure has the phenomenon of excessive grinding range, resulting in the consumption of more raw materials in the subsequent restoration work of the coating or cement hard lump layer existing on the surface of the steel structure. And when the thickness of the coating existing on the surface of the steel structure is relatively thin, after the grinding equipment finishes polishing and grinding the coating, if it continues to maintain high-speed grinding work, there will be an irreparable damage phenomenon to the surface of the steel structure. Summary of the Invention

[0004] In order to overcome the disadvantages that directly using the carried grinding equipment to polish and grind the coating or cement hard lump layer existing on the surface of the steel structure has excessive grinding range and damages the surface of the steel structure, the present invention provides a device for detecting the strength of building steel structures.

[0005] Technical Solution: A device for detecting the strength of building steel structures includes a holding cylinder, a flaw detector pen, a push block, an external compression spring, a rotating frame, a straight-tooth ring, a motor, a spur gear, a sliding ring, a sleeve ring, a handle, a pressing ring and a polishing brush; the flaw detector pen is slidably connected inside the holding cylinder; a push block is fixedly connected to the flaw detector pen; an external compression spring is fixedly connected between the push block and the holding cylinder; the holding cylinder is rotatably connected upward with a rotating frame; a straight-tooth ring is fixedly connected to the rotating frame; a motor is fixedly connected to the holding cylinder; the output shaft of the motor is fixedly connected with a spur gear; the spur gear meshes with the straight-tooth ring; a sliding ring is slidably connected to the rotating frame; a sleeve ring is rotatably connected to the sliding ring; a handle is fixedly connected to the sleeve ring; a polishing brush is fixedly connected to the sliding ring; a pressing ring is rotatably connected to the rotating frame.

[0006] More preferably, an anti-slip ring is fixedly connected to the pressing ring.

[0007] More preferably, the anti-slip ring is made of absorbent cotton porous material.

[0008] More preferably, a limiting ring is fixedly connected to the rotating frame; a plurality of main insertion rods are fixedly connected to the sliding ring; main insertion hole structures corresponding to the number and positions of the main insertion rods are formed in the limiting ring; a first conical hopper structure is formed on one side of the limiting ring close to the polishing brush.

[0009] More preferably, a second conical hopper structure is formed on the side of the limiting ring away from the polishing brush.

[0010] More preferably, a pushing ring is slidably connected in the main insertion hole structure; an internal compression spring is fixedly connected between the pushing ring and the corresponding main insertion hole structure.

[0011] More preferably, a suction machine is fixedly connected to the holding cylinder; a telescopic pipe is connected to the suction port of the suction machine; an annular groove structure is formed jointly between the sliding ring and the sleeve ring; the telescopic pipe is fixedly connected to the sleeve ring and is connected to the annular groove structure on the sleeve ring; a through hole structure communicating with the annular groove structure on the sliding ring is formed in the main insertion rod; a main suction hole structure penetrating through the limiting ring is formed in the main insertion hole structure, and the main suction hole structure is located in the second conical hopper structure of the limiting ring.

[0012] More preferably, a side suction hole structure penetrating through to the inner ring surface of the limiting ring is formed in the main suction hole structure.

[0013] More preferably, a grinding sheet is provided on the pushing block, and the grinding sheet is inserted on the pushing block through a side insertion rod; a side insertion hole structure for inserting the side insertion rod of the grinding sheet is formed in the limiting ring.

[0014] More preferably, a discharge groove structure is formed on the side edge of the grinding sheet.

[0015] Advantages of the present invention: An architectural steel structure strength detection device of the present invention is provided with a telescopic flaw detector pen in the holding cylinder, and a polishing brush and a limiting ring are connected to the holding cylinder through a rotating frame. First, the rotating frame cooperates with the limiting ring to control the polishing brush to polish and grind a specified small area on the surface coating of the architectural steel structure. Subsequently, the flaw detector pen can be directly pushed out to closely adhere to the surface of the architectural steel structure for detection work, without the need to switch back and forth between multiple devices and reposition and calibrate, and without worrying about over-grinding the coating on the surface of the architectural steel structure. Moreover, a grinding sheet with higher hardness can be installed on the limiting ring to polish and grind the cement hard block layer on the surface of the architectural steel structure. In addition, the debris generated by grinding is timely sucked away through the suction machine and the suction hole structure on the limiting ring, achieving an environmentally friendly construction effect without smoke and dust.

[0016] Therefore, when using a building steel structure strength detection device of the present invention, it is possible to avoid directly using the carried grinding equipment to polish and grind the coating or cement hard block layer existing on the surface of the steel structure, thus preventing the occurrence of excessive grinding range and damage to the surface of the steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of a building steel structure strength detection device of the present invention;

[0018] Figure 2 It is a cross-sectional structural diagram of the grip cylinder of a building steel structure strength detection device of the present invention;

[0019] Figure 3 It is a cross-sectional structural diagram of the limit ring of a building steel structure strength detection device of the present invention;

[0020] Figure 4 It is a structural diagram of the limit ring of a building steel structure strength detection device of the present invention;

[0021] Figure 5 It is a structural diagram of the push block of a building steel structure strength detection device of the present invention;

[0022] Figure 6 It is a structural diagram of the grinding disc of a building steel structure strength detection device of the present invention.

[0023] The above-mentioned drawings include the following reference numerals: 11 - grip cylinder, 12 - flaw detector pen, 13 - push block, 14 - external compression spring, 2 - rotating frame, 21 - straight tooth ring, 22 - motor, 23 - spur gear, 24 - sliding ring, 2401 - annular groove structure, 241 - collar, 242 - handle, 243 - main insertion rod, 24301 - through hole structure, 25 - pressure ring, 26 - anti-slip ring, 3 - polishing brush, 4 - limit ring, 401 - main jack structure, 402 - first conical hopper structure, 403 - second conical hopper structure, 404 - main suction hole structure, 405 - side suction hole structure, 406 - side jack structure, 41 - push ring, 42 - internal compression spring, 5 - suction machine, 51 - telescopic tube, 6 - grinding disc, 601 - discharge groove structure, 61 - side insertion rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which the presently preferred embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0025] Embodiment 1

[0026] A device for detecting the strength of a building steel structure, as Figures 1-4 shown, which includes a grip cylinder 11, a flaw detector pen 12, a push block 13, an external compression spring 14, a rotating frame 2, a straight tooth ring 21, a motor 22, a spur gear 23, a sliding ring 24, a collar 241, a handle 242, a pressure ring 25 and a polishing brush 3; the flaw detector pen 12 is slidably connected inside the grip cylinder 11, and the head end of the flaw detector pen 12 is initially hidden inside the grip cylinder 11; a push block 13 is fixedly connected to the tail end of the flaw detector pen 12; an external compression spring 14 is fixedly connected between the push block 13 and the grip cylinder 11, and the external compression spring 14 is sleeved on the outer surface of the flaw detector pen 12; a rotating frame 2 is rotatably connected to one side of the grip cylinder 11 facing the head end of the flaw detector pen 12; a straight tooth ring 21 is fixedly connected to the rotating frame 2; a motor 22 is fixedly connected to the grip cylinder 11; the output shaft of the motor 22 is fixedly connected with a spur gear 23; the spur gear 23 meshes with the straight tooth ring 21; a sliding ring 24 is slidably connected to the rotating frame 2; a collar 241 is rotatably connected to the sliding ring 24; a handle 242 is fixedly connected to the collar 241; a polishing brush 3 is fixedly connected to the sliding ring 24; a pressure ring 25 is rotatably connected to one end of the rotating frame 2 away from the flaw detector pen 12.

[0027] As Figure 2 shown, an anti-slip ring 26 is fixedly connected to the pressure ring 25; the anti-slip ring 26 is made of a water-absorbent cotton porous material that can absorb printing ink oil.

[0028] As Figures 2-4 shown, a limit ring 4 is fixedly connected to the rotating frame 2; several main insertion rods 243 are fixedly connected to the sliding ring 24; a main insertion hole structure 401 corresponding to the number and position of the main insertion rods 243 is formed on the limit ring 4; a first conical hopper structure 402 is formed on one side of the limit ring 4 close to the polishing brush 3, and the polishing brush 3 is initially wrapped in the first conical hopper structure 402 of the limit ring 4; a second conical hopper structure 403 is formed on the side of the limit ring 4 away from the polishing brush 3; a push ring 41 is slidably connected to each main insertion hole structure 401; an internal compression spring 42 is fixedly connected between each push ring 41 and the corresponding main insertion hole structure 401.

[0029] During the operation of using the device for detecting the strength of a building steel structure of the present invention, first, the operator needs to hold the grip cylinder 11 and control the anti-slip ring 26 on the pressure ring 25 to complete a squeezing action in the printing ink liquid box, so that the water-absorbent cotton porous material of the anti-slip ring 26 performs an absorption operation of the printing ink liquid. Then, the operator holds the grip cylinder 11 and controls the pressure ring 25 and the anti-slip ring 26 to press on the coating on the surface of the building steel structure, and transfers the printing ink liquid absorbed in the anti-slip ring 26 to the current position of the coating on the surface of the building steel structure, so that there is a marked circle formed by the printing ink liquid in this area on the coating on the surface of the building steel structure, and a prominent detection mark appears on the coating on the surface of the building steel structure.

[0030] Then the operator holds the grip cylinder 11 with his hand to control the pressing ring 25 and the anti-slip ring 26 to press on the coating at the same position on the surface of the building steel structure. Then the operator turns on the motor 22 to drive the spur gear 23 to rotate. The spur gear 23 meshes with the spur gear ring 21 to drive the rotating frame 2 and the sliding ring 24, the polishing brush 3 and the limiting ring 4 connected thereto to rotate. At the same time, the operator holds the handle 242 with his hand and pushes the collar 241 to drive the sliding ring 24 and the polishing brush 3 to move along the rotating frame 2 towards the limiting ring 4, so that the polishing brush 3 moves closer to the middle along the first conical hopper structure 402 of the limiting ring 4, and all the bristles of the polishing brush 3 are squeezed against each other to form a dense state and closely adhere to the coating on the surface of the building steel structure. The rotating polishing brush 3 polishes and grinds the coating on the surface of the building steel structure. At the same time, the sliding ring 24 drives the main plug 243 to insert into the corresponding main jack structure 401 on the limiting ring 4 until the main plug 243 closely adheres to the pushing ring 41. Since the pushing ring 41 is blocked by the inner compression spring 42, at this time, if the operator continues to push the collar 241 to drive the sliding ring 24 and the polishing brush 3 to move forward, an obvious moving resistance from the inner compression spring 42 will be felt.

[0031] If the thickness of the coating on the surface of the building steel structure is relatively thin, the polishing brush 3 only needs to closely adhere to the surface of the building steel structure to complete the polishing and grinding work of the coating. Then the operator timely pulls the collar 241 to drive the sliding ring 24 and the polishing brush 3 to move backward and reset, so as to avoid scratching the surface of the steel structure by the polishing brush 3 that continues to move forward.

[0032] If the thickness of the coating on the surface of the building steel structure is relatively thick, the operator continues to slowly push the collar 241 to drive the sliding ring 24 and the polishing brush 3 to move along the rotating frame 2 towards the limiting ring 4, and the polishing brush 3 continues to move forward to polish and grind the remaining coating on the surface of the building steel structure. At the same time, the main plug 243 pushes the pushing ring 41 to drive the inner compression spring 42 to compress. When the polishing brush 3 completes the polishing and grinding work of the remaining coating on the surface of the building steel structure, since the bristles of the polishing brush 3 are relatively soft and the hardness of the surface of the building steel structure is much stronger than that of the coating, the bristles of the polishing brush 3 will be blocked by the surface of the building steel structure and spread out around along the second conical hopper structure 403 of the limiting ring 4, reducing the extrusion of the surface of the building steel structure by the bristles of the polishing brush 3 during the continuous forward movement, thereby reducing the scratches generated by the bristles of the polishing brush 3 on the surface of the building steel structure. Then the operator timely pulls the collar 241 to drive the sliding ring 24 and the polishing brush 3 to move backward and reset.

[0033] After finishing the polishing treatment of the surface coating of the building steel structure, there are local exposed areas on the surface of the building steel structure with an area smaller than that of the pressing ring 25. Finally, the operator shuts down the motor 22, which no longer drives the rotating frame 2 and the sliding ring 24, polishing brush 3 and limiting ring 4 connected thereto to rotate. Then, the operator pushes the push block 13 to drive the flaw detector pen 12 to be pushed out along the holding cylinder 11 towards the limiting ring 4 until it closely adheres to the local exposed area on the surface of the building steel structure for inspection work, without the need to switch back and forth between multiple devices and reposition and calibrate, and without worrying about over-polishing the coating on the surface of the building steel structure.

[0034] Embodiment 2

[0035] On the basis of Embodiment 1, as Figures 1-4 shown, a suction machine 5 is fixedly connected to the holding cylinder 11 of this embodiment; a telescopic tube 51 is connected to the suction port of the suction machine 5; an annular groove structure 2401 is jointly formed between the sliding ring 24 and the collar 241; the telescopic tube 51 is fixedly connected to the collar 241, and the telescopic tube 51 is connected to the annular groove structure 2401 on the collar 241; each main insertion rod 243 is provided with a through hole structure 24301 that is connected to the annular groove structure 2401 on the sliding ring 24; each main jack structure 401 is provided with a main suction hole structure 404 that penetrates the limiting ring 4 towards the side away from the flaw detector pen 12, and the main suction hole structure 404 is located in the second conical hopper structure 403 of the limiting ring 4; each main suction hole structure 404 is provided with a number of side suction hole structures 405 that penetrate to the inner ring surface of the limiting ring 4.

[0036] The operator pushes the handle 242 to make the collar 241 and the sliding ring 24 approach the limiting ring 4 along the rotating frame 2, and inserts the main insertion rod 243 on the sliding ring 24 into the corresponding main jack structure 401 on the limiting ring 4. At this time, the telescopic tube 51 on the suction machine 5 is successively connected to the annular groove structure 2401 between the sliding ring 24 and the collar 241, the through hole structure 24301 of the main insertion rod 243, the main jack structure 401 of the limiting ring 4, the main suction hole structure 404 of the limiting ring 4, and the side suction hole structure 405 of the limiting ring 4. Therefore, when the operator controls the polishing brush 3 on the sliding ring 24 to polish the surface coating of the building steel structure, after the operator turns on the suction machine 5, the suction machine 5 can perform suction work through the main suction hole structure 404 and the side suction hole structure 405 of the limiting ring 4, so that the coating debris generated during the polishing treatment can be timely sucked away by the suction machine 5 in the areas of the main suction hole structure 404 and the side suction hole structure 405 of the limiting ring 4 respectively, completing the collection work of the debris, and achieving the effect that the entire polishing treatment work will not scatter a large amount of soot into the air and ground environment, achieving an environmentally friendly construction effect.

[0037] Embodiment 3

[0038] Based on Embodiment 2, as Figures 1-6 shown, a grinding sheet 6 is provided on the pushing block 13 of this embodiment. The grinding sheet 6 is initially inserted on the pushing block 13 through a side insertion rod 61; a side insertion hole structure 406 for inserting the side insertion rod 61 of the grinding sheet 6 is formed on the limiting ring 4; a plurality of discharge groove structures 601 are formed on the side edge of the grinding sheet 6.

[0039] For a building steel structure with a cement hard lump layer on its surface, only using the polishing brush 3 cannot grind the cement hard lump layer, and a grinding sheet 6 with a higher hardness is needed to grind the cement hard lump layer. At this time, the operator first pulls out the grinding sheet 6 on the pushing block 13, and then inserts the grinding sheet 6 into the side insertion hole structure 406 of the grinding sheet 6 through the side insertion rod 61. Then the operator abuts the pressing ring 25 and the grinding sheet 6 against the cement hard lump layer on the surface of the building steel structure. After that, the operator directly turns on the motor 22 to drive the grinding sheet 6 on the limiting ring 4 to rotate, and the grinding sheet 6 polishes and grinds the cement hard lump layer on the surface of the building steel structure, so that the building steel structure blocked by the cement hard lump layer is exposed to the external environment. At the same time, the suction machine 5 performs suction work through the main suction hole structure 404 on the limiting ring 4, and the cement hard lump layer debris ground and processed by the grinding sheet 6 can be promptly thrown out through the discharge groove structure 601 on the side edge of the grinding sheet 6 into the main suction hole structure 404 of the limiting ring 4 so that it can be smoothly sucked away.

[0040] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge scope of those skilled in the art.

Claims

1. A building steel structure strength detection device, comprising: a grip tube (11); a flaw detection pen (12) slidably connected inside the grip tube (11); a push block (13) fixedly connected to the flaw detection pen (12); an external compression spring (14) fixedly connected between the push block (13) and the grip tube (11); Its characteristics are: The device also comprises a rotating frame (2); the gripping tube (11) is connected to the rotating frame (2) in an upwardly rotatable manner; a spur gear ring (21) is fixedly connected to the rotating frame (2); a motor (22) is fixedly connected to the gripping tube (11); an output shaft of the motor (22) is fixedly connected to a spur gear (23); the spur gear (23) meshes with the spur gear ring (21); a sliding ring (24) is slidably connected to the rotating frame (2); a sleeve ring (241) is rotatably connected to the sliding ring (24); a handle (242) is fixedly connected to the sleeve ring (241); a polishing brush (3) is fixedly connected to the sliding ring (24); and a pressure ring (25) is rotatably connected to the rotating frame (2); A limit ring (4) is fixedly connected to the rotating frame (2); a plurality of main plug rods (243) are fixedly connected to the sliding ring (24); main plug hole structures (401) corresponding in number and position to the main plug rods (243) are provided on the limit ring (4); and a first cone bucket structure (402) is provided on a side of the limit ring (4) close to the polishing brush (3).

2. A building steel structure strength detection device according to claim 1, characterized in that: An anti-slip ring (26) is fixedly connected to the pressure ring (25).

3. A building steel structure strength detection device according to claim 2, characterized in that: The anti-slip ring (26) is made of a porous material of absorbent cotton.

4. A building steel structure strength detection device according to claim 1, characterized in that: A second cone structure (403) is provided on a side of the limiting ring (4) away from the polishing brush (3).

5. A building steel structure strength detection device according to claim 1, characterized in that the main A push ring (41) is slidably connected inside the socket structure (401); an internal compression spring (42) is fixedly connected between the push ring (41) and the corresponding main socket structure (401).

6. A building steel structure strength detection device according to claim 5, characterized in that: A suction machine (5) is fixedly connected to the grip tube (11); a suction port of the suction machine (5) is connected to a telescopic tube (51); an annular groove structure (2401) is provided between the sliding ring (24) and the sleeve ring (241); the telescopic tube (51) is fixedly connected to the sleeve ring (241), and the telescopic tube (51) is connected to the annular groove structure (2401) on the sleeve ring (241); a through hole structure (24301) connected to the annular groove structure (2401) on the sliding ring (24) is provided on the main insertion rod (243); a main suction hole structure (404) that penetrates the limiting ring (4) is provided on the main insertion hole structure (401), and the main suction hole structure (404) is located in the second cone bucket structure (403) of the limiting ring (4).

7. A building steel structure strength detection device according to claim 6, characterized in that: The main suction hole structure (404) is provided with a side suction hole structure (405) penetrating to the inner ring surface of the limiting ring (4).

8. A building steel structure strength detection device according to claim 6, characterized in that: The push block (13) is provided with a grinding sheet (6), and the grinding sheet (6) is inserted into the push block (13) via a side insertion rod (61); the limiting ring (4) is provided with a side insertion hole structure (406) for inserting the side insertion rod (61) of the grinding sheet (6).

9. A building steel structure strength detection device according to claim 8, characterized in that: A material discharge trough structure (601) is provided on the side edge of the grinding sheet (6).

Images