A stability detection device for portal steel frame support system

Abstract

The present invention discloses a stability detection device for a portal steel frame support system, specifically relating to the technical field of detection devices, including a mounting plate, wherein the upper portions of the two support rods on the left side and the two support rods on the right side close to each other are both fixedly mounted with a top test assembly, and the lower portions of the two support rods on the left side close to each other and the lower portions of the two support rods on the right side close to each other are both fixedly mounted with left and right side test assemblies. The stability detection device for a portal steel frame support system described in the present invention can simulate the pressure test effects of different weights on the portal steel frame through the provided pressure assembly, and at the same time, when the pressure assembly is used to apply pressure to the surface of the portal steel frame, if the portal steel frame is deformed under the currently applied pressure, the top test assembly can be observed to determine whether the deformation caused by the current weight is vertical, so as to facilitate subsequent data recording.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a stability detection device for a portal steel frame support system. Background Art

[0002] During the production process, portal steel frames need to be tested for deformation, stress, and stability under different load conditions. However, existing technologies require the use of a large number of testing instruments. For example, displacement sensors and strain gauges are installed at key positions of the steel frame to record the deformation and stress distribution under external loads. At the same time, force sensors are used to detect the actual force values borne by each component of the structure. Through the data acquisition system, various data are obtained and analyzed in real time to determine the stability of the structure. When it is found that the deformation of a local area exceeds the predetermined standard or the stress exceeds the safe range, the system will issue a warning signal to indicate the possible risk of instability. The required testing costs are too high.

[0003] Chinese Patent Publication No. CN216740025U discloses a highly stable portal steel frame, belonging to the technical field of building steel structures. The highly stable portal steel frame comprises steel frame columns vertically mounted on a foundation, a first steel frame beam having one end fixedly connected to the top of the steel frame column, a second steel frame beam having one end fixedly connected to the other end of the first steel frame beam, a beam-column connector disposed at the top of the steel frame column to strengthen the connection between the steel frame column and the first steel frame beam, an inter-beam connector disposed at the connection between two adjacent second steel frame beams to strengthen the connection between the two second steel frame beams, a middle steel column vertically mounted on the foundation and located between the two steel frame columns, and a middle steel beam vertically connected to the middle steel column and having its ends vertically connected to the steel frame columns on either side. This patent document has the advantage of improving the stability of portal steel frames with large spans.

[0004] Although the device in the above patent document can improve the stability of the portal steel frame during use, it lacks a device for stability detection during actual use and cannot determine the specific stability value range of the portal steel frame. Summary of the Invention

[0005] The main purpose of the present invention is to provide a stability detection device for a portal steel frame support system, which can effectively solve the problem of lack of a stability detection device and inability to determine the specific stability value range of the portal steel frame.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A stability detection device for a portal steel frame support system includes a mounting plate, a support plate is fixedly connected to the middle part of the front end of the mounting plate, a pressure assembly is fixedly installed on the upper part of the rear end of the mounting plate, two support rods are provided on the left and right parts of the rear end of the mounting plate and are symmetrically distributed front to back, the two support rods located on the front side are fixedly connected to the rear end of the mounting plate, the two support rods on the left side and the two support rods on the right side are jointly fixedly installed with a top test assembly on the upper parts of one end close to each other, and the left and right side test assemblies are jointly fixedly installed on the lower parts of one end close to each other of the two support rods on the left side and the lower parts of one end close to each other of the two support rods on the right side.

[0008] Preferably, the pressure assembly includes a material storage box fixedly connected to the upper rear end of the mounting plate, the inner surface of the material storage box is slidably connected to a pressing plate, the lower left end and the right side of the lower end of the pressing plate are fixedly connected to a plurality of pressing columns in a linear array, the left and right sides of the bottom wall of the material storage box and the left and right sides of the lower end of the pressing plate are fixedly connected to a plurality of spring ones in a linear array, several of the spring ones are located on the outsides of the plurality of pressing columns, the lower outer surfaces of the plurality of pressing columns pass through the bottom wall of the material storage box and extend to the outside, the lower ends of the plurality of pressing columns are provided with guide holes, the inner surfaces of the plurality of guide holes are slidably connected to guide rods, the lower ends of the plurality of guide rods are fixedly connected to pressing inclined blocks, and the upper end of the pressing inclined block on the same side and the lower end of the pressing column on the same side are fixedly connected to spring four.

[0009] Preferably, the top test assembly includes two inclined plates that are symmetrically distributed on the left and right sides, the two support rods on the same side are rotatably connected to the ends of the inclined plates on the same side that are close to each other, the two support rods on the left and the two support rods on the right that are close to each other are commonly fixedly connected to a connecting plate, a slide groove is provided in the middle of the rear end of the connecting plate, the lower ends of the two inclined plates are fixedly connected to a plurality of measuring columns one in a linear array, the lower parts of the outer surfaces of the plurality of measuring columns one pass through the upper end of the connecting plate and extend to the outside, the left and right sides of the upper end of the connecting plate are respectively fixedly connected to the ends of the two inclined plates that are close to each other, the plurality of springs two are respectively located on the outside of the plurality of measuring columns one, and the inner surface of the slide groove is slidably connected to the L-shaped measuring plate one.

[0010] Preferably, the lower ends of the plurality of pressing oblique blocks on the left side and the lower ends of the plurality of pressing oblique blocks on the right side cooperate with the inclined plate on the left side and the upper ends of the inclined plate on the right side, respectively.

[0011] Preferably, the left and right test assemblies include connecting plates, the left front end and the right front end and the right front end of the connecting plate are respectively fixedly connected to the lower parts of the two support rods on the left side and the lower parts of the two support rods on the right side. The left front end and the right front end of the connecting plate are fixedly connected to the C-shaped plate, and the ends of the two C-shaped plates away from each other are fixedly connected to the guide plates. The inner surfaces of the two guide plates and the ends of the two support rods on the same side that are close to each other are slidably connected with special-shaped blocks. The two special-shaped blocks on the left and the right sides are fixedly connected to the C-shaped plates. The two special-shaped blocks on the right are symmetrically distributed on the left and right sides. The middle part of the lower end of the four special-shaped blocks is fixedly connected to a measuring column 2. The lower ends of the four special-shaped blocks are respectively fixedly connected to the upper end of the connecting plate and the upper ends of the two C-shaped plates with a spring 3. The four springs 3 are respectively located on the outside of the four measuring columns 2. The lower part of the outer surface of the four measuring columns 2 respectively penetrates the upper end of the connecting plate and the upper ends of the two C-shaped plates and extends to the outside. The left side and the right side of the rear end of the connecting plate are fixedly connected to the L-shaped measuring plate 2, and the rear ends of the two C-shaped plates are fixedly connected to the L-shaped measuring plate 3.

[0012] Preferably, the four special-shaped blocks are all arranged in an E-shape, and the end surfaces of the horizontal parts of the four special-shaped blocks are all arranged in an inclined shape.

[0013] Preferably, the left end and the right end of the connecting plate respectively form a cavity with the sides of the two C-shaped plates that are close to each other.

[0014] Preferably, the heights of the plurality of measuring columns are arranged to increase in sequence from the outside to the inside.

[0015] Preferably, outer surfaces of the two L-shaped measuring plates three, the two L-shaped measuring plates two, and the L-shaped measuring plate one are all provided with scale values.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can simulate the pressure test effects of different weights on the portal steel frame by setting a pressure component, thereby improving the testable range of the device. At the same time, when the pressure component is set to apply pressure to the surface of the portal steel frame, if the portal steel frame is deformed under the current applied pressure, the top test component can be observed to determine the vertical deformation caused by the current weight, so as to facilitate subsequent data recording, thereby improving the accuracy of the test.

[0018] 2. The present invention provides left and right test assemblies that can cooperate with the top test assembly to measure the values generated when deformation occurs on the left and right sides of the portal steel frame. The left and right test assemblies can detect the irregular deformations generated on the left and right sides of the portal steel frame, and then combine the values detected by the left and right test assemblies with the values detected by the top test assembly to obtain the overall stability value of the portal steel frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0021] Figure 3 This is a schematic diagram of the installation positions of the pressurizing assembly, the top test assembly, and the left and right test assemblies of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection positions of the top test assembly and the left and right test assemblies of the present invention;

[0023] Figure 5 This is a schematic diagram of the left and right test assembly structures of the present invention;

[0024] Figure 6 This is a schematic diagram of the top test assembly structure of the present invention;

[0025] Figure 7 It is a schematic diagram of a partial cross-sectional structure of a pressurizing assembly of the present invention;

[0026] Figure 8 It is a schematic diagram of the partial structure of the pressurizing component of the present invention;

[0027] Figure 9 For the present invention Figure 5 A schematic diagram of the structure at center A;

[0028] Figure 10 For the present invention Figure 6 A magnified schematic diagram of the structure at point B in the middle;

[0029] Figure 11 For the present invention Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0030] In the figure: 1. Mounting plate; 2. Support plate; 3. Pressing assembly; 31. Storage box; 32. Pressing plate; 33. Pressing column; 34. Spring one; 35. Guide hole; 36. Guide rod; 37. Pressing inclined block; 38. Spring four; 4. Support rod; 5. Top test assembly; 51. Inclined plate; 52. Connecting plate; 53. Slide; 54. Measuring column one; 55. Spring two; 56. L-shaped measuring plate one; 6. Left and right test assemblies; 61. Connecting plate; 62. C-shaped plate; 63. Guide plate; 64. Special-shaped block; 65. Measuring column two; 66. Spring three; 67. L-shaped measuring plate two; 68. L-shaped measuring plate three. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] Example 1, as Figure 1 and Figure 2 As shown, a stability testing device for a portal steel frame support system includes a mounting plate 1, a support plate 2 fixedly connected to the middle of the front end of the mounting plate 1, and a pressure component 3 fixedly mounted on the upper rear end of the mounting plate 1. The pressure component 3 can simulate the pressure test effects of different weights on the portal steel frame, thereby increasing the test range of the device;

[0033] Two support rods 4 are provided at the left and right parts of the rear end of the mounting plate 1 and are symmetrically distributed front to back. The two support rods 4 on the front side are fixedly connected to the rear end of the mounting plate 1. The upper parts of the two support rods 4 on the left side and the two support rods 4 on the right side, which are close to each other, are jointly fixed with a top test assembly 5. When the pressure component 3 is used to apply pressure to the surface of the portal steel frame, if the portal steel frame is deformed under the current applied pressure, the top test assembly 5 can be observed to determine the vertical deformation caused by the current weight, so as to facilitate subsequent data recording, thereby improving the accuracy of the test.

[0034] The lower parts of the ends of the two support rods 4 on the left side and the lower parts of the ends of the two support rods 4 on the right side are fixedly installed with left and right side test components 6. The left and right side test components 6 can cooperate with the top test component 5 to measure the formation values generated when the left and right sides of the portal steel frame are deformed. The left and right side test components 6 can detect the irregular deformations generated on the left and right sides of the portal steel frame, and then combine the values detected by the left and right side test components 6 with the values detected by the top test component 5 to obtain the overall stability value of the portal steel frame.

[0035] Example 2: Based on Example 1, this example is for the purpose of applying pressure of different weights to the surface of the portal steel frame to test the degree of deformation of the top of the portal steel frame.

[0036] For details, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 、 Figure 10 and Figure 11 The pressing assembly 3 includes a material storage box 31 fixedly connected to the upper rear end of the mounting plate 1, and a pressing plate 32 is slidably connected to the inner surface of the material storage box 31, and a plurality of pressing columns 33 are fixedly connected to the left and right sides of the lower end of the pressing plate 32 in a linear array. The left and right sides of the bottom wall of the material storage box 31 and the left and right sides of the lower end of the pressing plate 32 are fixedly connected to a plurality of springs 1 34 in a linear array. The plurality of springs 1 34 are located on the outside of the plurality of pressing columns 33, and the lower portions of the outer surfaces of the plurality of pressing columns 33 pass through the bottom wall of the material storage box 31 and extend to the outside. The lower ends of the plurality of pressing columns 33 are provided with guide holes 35, and the inner surfaces of the plurality of guide holes 35 are slidably connected to guide rods 36. The lower ends of the plurality of guide rods 36 are fixedly connected to pressing inclined blocks 37, and the upper ends of the pressing inclined blocks 37 on the same side and the lower ends of the pressing columns 33 on the same side are fixedly connected to spring four 38.

[0037] Furthermore, the top test assembly 5 includes two inclined plates 51 that are symmetrically distributed on the left and right sides. The two support rods 4 on the same side are rotatably connected to the ends of the inclined plates 51 on the same side that are close to each other. The two support rods 4 on the left and the two support rods 4 on the right are fixedly connected to a connecting plate 52 at their ends that are close to each other. A slide groove 53 is provided in the middle of the rear end of the connecting plate 52. The lower ends of the two inclined plates 51 are fixedly connected to a number of measuring columns 54 in a linear array. The lower parts of the outer surfaces of the several measuring columns 54 pass through the upper end of the connecting plate 52 and extend to the outside. The left and right sides of the upper end of the connecting plate 52 are fixedly connected to the ends of the two inclined plates 51 that are close to each other with a number of springs 55. The several springs 55 are respectively located on the outside of the several measuring columns 54. The inner surface of the slide groove 53 is slidably connected to an L-shaped measuring plate 56.

[0038] Furthermore, the lower ends of the plurality of pressing oblique blocks 37 on the left side and the lower ends of the plurality of pressing oblique blocks 37 on the right side cooperate with the upper ends of the inclined plate 51 on the left side and the inclined plate 51 on the right side, respectively.

[0039] Furthermore, the heights of the plurality of measuring columns 54 are arranged to increase in sequence from the outside to the inside.

[0040] Furthermore, outer surfaces of the two L-shaped measuring plates 3 68 , the two L-shaped measuring plates 2 67 , and the L-shaped measuring plate 1 56 are all provided with scale values.

[0041] The pressing plate 32 is pressed downwardly according to the weight of the added sand, and when the pressing plate 32 moves downwardly, the pressing plate 32 can drive the pressing posts 33 fixedly connected to the left and right sides of its lower ends to move downwardly at the same time, and squeeze and contract the springs 34 located on the outer surfaces of the pressing posts 33. As can be seen from the above, the lower ends of the pressing oblique blocks 37 on the left and the pressing oblique blocks 37 on the right cooperate with the upper ends of the inclined plate 51 on the left and the inclined plate 51 on the right, respectively. Therefore, in the process of filling sand, the pressing post 33 in the middle will first move downward with the guide rod 36 connected thereto for sliding. At the same time, the guide rod 36 drives the pressing oblique block 37 fixed at its lower end to fit together with the upper end of the portal steel frame. In the process of fitting, if the pressure exerted by the pressing oblique block 37 in the middle on the top of the portal steel frame cannot squeeze and deform the portal steel frame, then the material can continue to be added to the storage box 31. The sand is added, and then the pressing inclined blocks 37 on both sides gradually follow the corresponding pressing columns 33 to gradually approach the top of the portal steel frame. Then the pressing inclined blocks 37 on the same side squeeze the spring four 38 on the same side to shrink. When the top of the portal steel frame is deformed, the deformation process can squeeze the inclined plates 51 on both sides to move downward, and the inclined plates 51 on the same side squeeze the measuring column one 54 fixedly connected to it to pass through the connecting plate 52, and the inclined plates 51 on the same side squeeze the spring two 55 to shrink. As can be seen from the above, the heights of the several measuring columns one 54 are arranged to increase from the outside to the inside. Therefore, when observing from the outside to the inside, the L-shaped measuring plate one 56 is slid in the slide groove 53 to the side of the measuring column one 54 that has dropped the most, and the lower end of the measuring column one 54 is aligned with the scale line on the surface of the L-shaped measuring plate one 56 to measure the specific degree of deformation. Therefore, the maximum load-bearing degree of the top of the portal steel frame can be calculated according to the weight of the added sand and the specific degree of deformation, and then the specific stability value of the top of the portal steel frame can be calculated.

[0042] Embodiment 3: Based on embodiment 2, this embodiment aims to measure the degree of deformation on the left and right sides of the portal steel frame when deformation occurs on the left and right sides.

[0043] For details, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 9The left and right test assemblies 6 include a connecting plate 61. The front end and rear end of the left side and the front end and rear end of the right side of the connecting plate 61 are respectively fixedly connected to the lower part of the end of the two support rods 4 on the left side close to each other and the lower part of the end of the two support rods 4 on the right side close to each other. The left side and right side of the front end of the connecting plate 61 are fixedly connected to a C-shaped plate 62. The ends of the two C-shaped plates 62 away from each other are fixedly connected to a guide plate 63. The inner surfaces of the two guide plates 63 and the ends of the two support rods 4 on the same side close to each other are slidably connected with special-shaped blocks 64. The two special-shaped blocks 64 on the left and the two on the right are fixedly connected. The special-shaped blocks 64 are distributed symmetrically on the left and right. The middle part of the lower end of the four special-shaped blocks 64 is fixedly connected to the measuring column 2 65. The lower ends of the four special-shaped blocks 64 are respectively fixedly connected to the upper end of the connecting plate 61 and the upper ends of the two C-shaped plates 62 with springs 3 66. The four springs 3 66 are respectively located on the outside of the four measuring columns 2 65. The lower part of the outer surface of the four measuring columns 2 65 respectively penetrates the upper end of the connecting plate 61 and the upper ends of the two C-shaped plates 62 and extends to the outside. The left side and the right side of the rear end of the connecting plate 61 are fixedly connected to the L-shaped measuring plate 2 67, and the rear ends of the two C-shaped plates 62 are fixedly connected to the L-shaped measuring plate 3 68.

[0044] Furthermore, the four special-shaped blocks 64 are all arranged in an E-shape, and the end surfaces of the horizontal parts of the four special-shaped blocks 64 are all arranged in an inclined shape.

[0045] Furthermore, the left and right ends of the connecting plate 61 respectively form cavities with the sides of the two C-shaped plates 62 that are close to each other.

[0046] When the top of the door frame is squeezed and deformed, the left and right sides of the door frame may be deformed. When the left and right sides of the door frame are deformed, it can be seen from the above that the four special-shaped blocks 64 are all set in an E-shape, and the end faces of the horizontal parts of the four special-shaped blocks 64 are all set in an inclined shape. Therefore, when the left and right sides of the door frame are deformed by pressure, since the direction of deformation is uncontrollable, when the left and right sides of the door frame are deformed, the position of the deformation will squeeze the gap of the E-shaped special-shaped block 64, and then the special-shaped block 64 is pressed downward, and the special-shaped blocks 64 on the same side are respectively When the inner surface of the guide plate 63 and the inner surfaces of the two support rods 4 on the same side move downward, the spring 3 66 can be squeezed at the same time, and the measuring column 2 65 on the same side can pass through the C-shaped plate 62 and the connecting plate 61 on both sides respectively. Then, by observing the L-shaped measuring plate 3 68 and the L-shaped measuring plate 2 67 on the left and right sides, the deformation degree of the left and right sides of the door frame can be determined according to the distance moved by the lower end of the measuring column 2 65. The deformation degree of the left and right sides can be added to the deformation degree of the upper end to obtain the overall deformation value of the door frame, and thus the stability value of the door frame can be obtained.

[0047] During the above-mentioned inspection process, it can be seen from the above that the left and right ends of the connecting plate 61 respectively form a cavity on the side where the two C-shaped plates 62 are close to each other. Therefore, the left and right sides of the portal steel frame are respectively located in the cavity formed on the side where the left and right ends of the connecting plate 61 respectively are close to the two C-shaped plates 62.

[0048] The stability of the portal steel frame is evaluated by measuring its deformation under different loads. Combined with the geometric characteristics of the steel frame such as span, height, and cross-sectional shape, its deformation can be estimated. The greater the deformation, the worse the structural stability may be.

[0049] And there may be the following three situations in this solution:

[0050] Case A: The portal steel frame has high stability. No matter how much pressure is added, it will not deform. This portal steel frame has the highest stability.

[0051] Case B: The top of the portal frame is deformed, but the left and right sides are not deformed. In this case, the top stability of the portal frame is average, while the left and right sides are relatively stable.

[0052] Case C: The top of the portal frame does not deform, but the left and right sides deform. In this case, the top of the portal frame is relatively stable, while the left and right sides are relatively unstable.

[0053] Case D: The top and left and right sides of the portal steel frame are deformed. In this case, the overall stability of the portal steel frame is the worst.

[0054] Generally speaking, the stability test of the portal steel frame requires the use of a large number of sensors or the use of large machinery to lift the top of the portal steel frame for testing. However, this device can not only test the portal steel frame itself, but also test the portal steel frame produced in proportion. The materials and proportions used in the production of the portal steel frame produced in proportion are proportional to the portal steel frame itself, so the measurement structure of the portal steel frame itself can be obtained.

[0055] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A stability detection device for a portal steel frame support system, comprising a mounting plate (1), characterized in that: The middle part of the front end of the mounting plate (1) is fixedly connected to the support plate (2), the upper part of the rear end of the mounting plate (1) is fixedly installed with a pressurizing assembly (3), the left part and the right part of the rear end of the mounting plate (1) are both provided with two support rods (4) symmetrically distributed front and back, the two support rods (4) on the front side are both fixedly connected to the rear end of the mounting plate (1), the upper parts of the two support rods (4) on the left side and the two support rods (4) on the right side that are close to each other are both fixedly installed with a top test assembly (5), and the lower parts of the two support rods (4) on the left side and the lower parts of the two support rods (4) on the right side that are close to each other are both fixedly installed with left and right side test assemblies (6); The pressurizing assembly (3) comprises a material storage box (31) fixedly connected to the upper rear end of the mounting plate (1), a pressing plate (32) is slidably connected to the inner surface of the material storage box (31), a plurality of pressing columns (33) are fixedly connected to the left and right sides of the lower end of the pressing plate (32) in a linear array, and a plurality of springs (34) are fixedly connected to the left and right sides of the bottom wall of the material storage box (31) and the left and right sides of the lower end of the pressing plate (32) in a linear array. On the outside of the pressing column (33), the lower parts of the outer surfaces of the plurality of pressing columns (33) penetrate the bottom wall of the material storage box (31) and extend to the outside, the lower ends of the plurality of pressing columns (33) are provided with guide holes (35), the inner surfaces of the plurality of guide holes (35) are slidably connected with guide rods (36), the lower ends of the plurality of guide rods (36) are fixedly connected with pressing inclined blocks (37), and the upper ends of the pressing inclined blocks (37) on the same side and the lower ends of the pressing columns (33) on the same side are fixedly connected with springs four (38); The top test assembly (5) includes two inclined plates (51) that are symmetrically distributed on the left and right sides. The two support rods (4) on the same side are rotatably connected to the ends of the inclined plates (51) on the same side that are close to each other. The two support rods (4) on the left and the two support rods (4) on the right are fixedly connected to a connecting plate (52) at their ends that are close to each other. A sliding groove (53) is provided in the middle of the rear end of the connecting plate (52). The lower ends of the two inclined plates (51) are fixedly connected to a plurality of measuring columns (54) in a linear array. The lower parts of the outer surfaces of the plurality of measuring columns (54) pass through the upper end of the connecting plate (52) and extend to the outside. The left and right sides of the upper end of the connecting plate (52) are fixedly connected to the ends of the two inclined plates (51) that are close to each other with a plurality of springs (55). The plurality of springs (55) are respectively located on the outside of the plurality of measuring columns (54). The inner surface of the sliding groove (53) is slidably connected to an L-shaped measuring plate (56).

2. The stability detection device for a portal steel frame support system according to claim 1, characterized in that: The lower ends of the plurality of pressing oblique blocks (37) on the left side and the lower ends of the plurality of pressing oblique blocks (37) on the right side respectively cooperate with the upper ends of the inclined plate (51) on the left side and the upper ends of the inclined plate (51) on the right side.

3. The stability detection device for a portal steel frame support system according to claim 1, characterized in that: The left and right test assemblies (6) include a connecting plate (61), the front end and rear end of the left side and the front end and rear end of the right side of the connecting plate (61) are fixedly connected to the lower parts of the ends of the two support rods (4) on the left side and the lower parts of the ends of the two support rods (4) on the right side, respectively. The left side and right side of the front end of the connecting plate (61) are fixedly connected to a C-shaped plate (62), and the ends of the two C-shaped plates (62) away from each other are fixedly connected to a guide plate (63). The inner surfaces of the two guide plates (63) and the ends of the two support rods (4) on the same side are slidably connected to special-shaped blocks (64). The two special-shaped blocks (64) on the left side and the two special-shaped blocks (64) on the right side are symmetrically distributed on the left and right sides. The four special-shaped blocks (64) The middle of the lower end is fixedly connected to a measuring column 2 (65), the lower ends of the four special-shaped blocks (64) are respectively fixedly connected to the upper end of the connecting plate (61) and the upper ends of the two C-shaped plates (62) with a spring 3 (66), the four springs 3 (66) are respectively located on the outside of the four measuring columns 2 (65), the lower parts of the outer surfaces of the four measuring columns 2 (65) respectively penetrate the upper end of the connecting plate (61) and the upper ends of the two C-shaped plates (62) and extend to the outside, the left side and the right side of the rear end of the connecting plate (61) are fixedly connected to an L-shaped measuring plate 2 (67), the rear ends of the two C-shaped plates (62) are fixedly connected to an L-shaped measuring plate 3 (68), the four special-shaped blocks (64) are all arranged in an E shape, and the end faces of the horizontal parts of the four special-shaped blocks (64) are all arranged in an inclined shape.

4. The stability detection device for a portal steel frame support system according to claim 3, characterized in that: The left end and the right end of the connecting plate (61) respectively form a cavity with the sides of the two C-shaped plates (62) that are close to each other.

5. The stability detection device for a portal steel frame support system according to claim 1, characterized in that: The heights of the plurality of measuring columns (54) are arranged to increase in sequence from the outside to the inside.

6. The stability detection device for a portal steel frame support system according to claim 3, characterized in that: The outer surfaces of the two L-shaped measuring plates three (68), the two L-shaped measuring plates two (67) and the L-shaped measuring plate one (56) are all provided with scale values.

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