Stability detection device for portal steel frame supporting system

Abstract

The invention discloses a stability detection device for a portal steel frame supporting system, and particularly relates to the technical field of detection devices.The stability detection device comprises a mounting plate, and top testing assemblies are jointly and fixedly mounted on the upper portions of the ends, close to each other, of two supporting rods located on the left side and the upper portions of the ends, close to each other, of two supporting rods located on the right side; left and right side testing assemblies are fixedly installed on the lower portions of the ends, close to each other, of the two supporting rods located on the left side and the lower portions of the ends, close to each other, of the two supporting rods located on the right side. According to the stability detection device for the portal steel frame supporting system, the pressure test effect of different weights on the portal steel frame can be simulated through the arranged pressurization assembly, and meanwhile, when pressure is applied to the surface of the portal steel frame according to the pressurization assembly through the arranged top test assembly, the stability of the portal steel frame can be detected under the currently applied pressure. When the door-type steel frame deforms, the top testing assembly can be observed to judge that the deformation generated by the current weight is vertical, so that subsequent data recording is facilitated.

Description

Technical Field

[0001] The 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, the portal steel frame needs to be tested for deformation, stress and stability under different load conditions. The existing technology requires the use of a large number of testing instruments. For example, by installing displacement sensors and strain gauges at key positions of the steel frame to record the deformation and stress distribution under external loads, force sensors are used to detect the actual force values ​​borne by various components 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, and the required testing cost is too high.

[0003] Chinese patent publication number CN216740025U discloses a highly stable portal steel frame, belonging to the technical field of building steel structure, the highly stable portal steel frame comprises a steel frame column vertically installed on the foundation, a first steel frame beam fixedly connected at one end to the top of the steel frame column, a second steel frame beam fixedly connected at one end to the other end of the first steel frame beam, a beam-column connector arranged at the top of the steel frame column and used to strengthen the connection strength between the steel frame column and the first steel frame beam, an inter-beam connector arranged at the connection between two adjacent second steel frame beams and used to strengthen the connection strength between the two second steel frame beams, a middle-layer steel column vertically installed on the foundation and located between the two steel frame columns, and a middle-layer steel beam vertically connected to the middle-layer steel column and having its two ends vertically connected to the steel frame columns on both sides. The above patent document has the advantage of being able to improve the stability of a portal steel frame with a large span.

[0004] Although the equipment 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 comprises 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 to the upper part of the rear end of the mounting plate, two support rods are provided at the left part and the right part of the rear end of the mounting plate and are symmetrically distributed front and 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 located on the left side and the two support rods located on the right side have a top test assembly fixedly installed on their upper parts at their ends close to each other, and the left and right side test assemblies are fixedly installed on their lower parts at their ends close to each other.

[0008] Preferably, the pressurizing 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 left side 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 springs in a linear array, several of the springs are located on the outsides of the plurality of pressing columns, the lower parts of the outer surfaces of the plurality of pressing columns pass through the bottom wall of the material storage box and extend to the outside, guide holes are provided at the lower ends of the plurality of pressing columns, 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 side and the two support rods on the right side that are close to each other are commonly fixedly connected to a connecting plate, a slide groove is provided in the middle part 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 1 in a linear array, the lower parts of the outer surfaces of the plurality of measuring columns 1 pass through the upper ends of the connecting plates and extend to the outside, the left and right sides of the upper ends of the connecting plates are commonly fixedly connected to the ends of the two inclined plates that are close to each other, the plurality of springs 2 are respectively located on the outsides of the plurality of measuring columns 1, and the inner surface of the slide groove is slidably connected to an L-shaped measuring plate 1.

[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 a connecting plate, the left front end and rear end as well as the right front end and rear end of the connecting plate are respectively fixedly connected to the lower parts of the ends of the two support rods on the left side and the lower parts of the ends 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 with a C-shaped plate, the ends of the two C-shaped plates away from each other are fixedly connected with a guide plate, the inner surfaces of the two guide plates and the ends of the two support rods on the same side close to each other are slidably connected with special-shaped blocks, the two special-shaped blocks on the left and the The two special-shaped blocks on the right are symmetrically distributed, and the middle parts of the lower ends of the four special-shaped blocks are fixedly connected with measuring columns 2. The lower ends of the four special-shaped blocks are respectively fixedly connected with springs 3 at the upper ends of the connecting plate and the upper ends of the two C-shaped plates. The four springs 3 are respectively located on the outsides of the four measuring columns 2. The lower parts of the outer surfaces of the four measuring columns 2 respectively penetrate the upper ends of the connecting plate and the upper ends of the two C-shaped plates and extend to the outside. The left side and the right side of the rear end of the connecting plate are fixedly connected with L-shaped measuring plates 2, and the rear ends of the two C-shaped plates are fixedly connected with L-shaped measuring plates 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 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 components that can cooperate with the top test component to measure the values ​​generated when the left and right sides of the portal steel frame are deformed. The left and right test components can perform detection based on the irregular deformations generated on the left and right sides of the portal steel frame. Subsequently, the values ​​detected by the left and right test components are combined with the values ​​detected by the top test component 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 It is another perspective overall structural schematic diagram of the present invention;

[0021] Figure 3 It 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 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 It is a schematic diagram of the structure of the left and right test components of the present invention;

[0024] Figure 6 It 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 component 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] Fig. 9 For the present invention Figure 5 A schematic diagram of the structure enlargement in the middle;

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

[0029] Fig.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. Pressurizing assembly; 31. Material 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 side 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 easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] Embodiment 1, as Figure 1 and Figure 2 As shown, a stability detection device for a portal steel frame support system comprises a mounting plate 1, a support plate 2 is fixedly connected to the middle of the front end of the mounting plate 1, and a pressure component 3 is fixedly installed on the upper part of the rear end of the mounting plate 1. By setting the pressure component 3, the pressure test effect of different weights on the portal steel frame can be simulated, thereby increasing the testable 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 and back. The two support rods 4 at the front side are fixedly connected to the rear end of the mounting plate 1. The upper parts of the two support rods 4 at the left side and the two support rods 4 at the right side that are close to each other are fixedly installed with a top test assembly 5. When the pressure is applied to the surface of the portal steel frame according to the pressure assembly 3, 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 formed values ​​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] Embodiment 2: Based on Embodiment 1, this embodiment is for the purpose of applying pressures 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 , Fig.10 and Fig.11 The pressurizing assembly 3 includes 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, 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, and a plurality of springs 1 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, and the plurality of springs 1 34 are located on the outside of the plurality of pressing columns 33, and 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, and 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, and 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 springs 4 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 side and the two support rods 4 on the right side that are close to each other are commonly fixedly connected with a connecting plate 52, a slide groove 53 is provided in the middle part of the rear end of the connecting plate 52, the lower ends of the two inclined plates 51 are fixedly connected with 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 commonly fixedly connected with the ends of the two inclined plates 51 that are close to each other, the plurality of springs 55 are respectively located on the outsides of the plurality of measuring columns 54, and the inner surface of the slide groove 53 is slidably connected with an L-shaped measuring plate 56.

[0038] Furthermore, the lower ends of the plurality of pressing inclined blocks 37 on the left side and the lower ends of the plurality of pressing inclined 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, the 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 by adding sand into the material storage box 31. 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 inclined blocks 37 on the left and the pressing inclined blocks 37 on the right cooperate with the upper ends of the inclined plates 51 on the left and 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 slidably connected therein, and at the same time, the guide rod 36 drives the pressing inclined block 37 fixedly connected at its lower end to fit with the upper end of the portal steel frame. In the process of fitting, if the pressure applied by the pressing inclined block 37 in the middle to the top of the portal steel frame cannot squeeze and deform the portal steel frame, then the material storage box 31 can continue to be added. Sand, 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, and 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 in increasing order from the outside to the inside. Therefore, it can be observed from the outside to the inside, and the L-shaped measuring plate one 56 is slid in the slide groove 53 to the side of the measuring column one 54 with the greatest degree of descent, 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, so as to measure the specific degree of deformation. Therefore, the maximum load-bearing degree of the top of the portal steel frame can be deduced 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 deduced.

[0042] Embodiment 3: This embodiment is based on Embodiment 2 and 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 Fig. 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 the 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 to special-shaped blocks 64, the two special-shaped blocks 64 on the left and the two on the right The special-shaped blocks 64 are distributed symmetrically on the left and right, and the middle part of the lower end of the four special-shaped blocks 64 is fixedly connected with a measuring column 2 65. The lower ends of the four special-shaped blocks 64 are respectively fixedly connected with springs 3 66 at the upper end of the connecting plate 61 and the upper ends of the two C-shaped plates 62. 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 with an L-shaped measuring plate 2 67, and the rear ends of the two C-shaped plates 62 are fixedly connected with an 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 moving downward in the inner surface of the guide plate 63 on the same side and the inner surfaces of the two support rods 4 on the same side, the spring three 66 can be squeezed at the same time, and the measuring column two 65 on the same side can pass through the C-shaped plate 62 and the connecting plate 61 on both sides respectively, and then the deformation degree of the left and right sides of the door frame can be judged according to the moving distance of the lower end of the measuring column two 65 by observing the L-shaped measuring plate three 68 and the L-shaped measuring plate two 67 on the left and right sides, and the deformation degree of the left and right sides can be added to the deformation degree of the upper end, and then the overall deformation value of the door frame can be obtained, thereby obtaining the stability value of the door frame;

[0047] During the above detection process, it can be seen from the above that the left and right ends of the connecting plate 61 respectively form a cavity with 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 by the left and right ends of the connecting plate 61 and the side where the two C-shaped plates 62 are close to each other.

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

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

[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 steel frame is deformed, but the left and right sides are not deformed. In this case, the top stability of the portal steel frame is average, but the stability of the two sides is good.

[0052] Case C: The top of the portal steel frame does not deform, but the left and right sides deform. In this case, the top stability of the portal steel frame is good, while the stability of the two sides is poor.

[0053] Case D: deformation occurs on the top and both the left and right sides of the portal steel frame. 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 body, 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 body, so the measurement structure of the portal steel frame body can be obtained.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached 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: A support plate (2) is fixedly connected to the middle of the front end of the mounting plate (1); a pressure assembly (3) is fixedly installed on the upper part of the rear end of the mounting plate (1); two support rods (4) are symmetrically distributed front and back at the left and right parts of the rear end of the mounting plate (1); the two support rods (4) located on the front side are fixedly connected to the rear end of the mounting plate (1); the top test assembly (5) is fixedly installed on the upper parts of the ends of the two support rods (4) located on the left side and the two support rods (4) located on the right side, which are close to each other; and the left and right side test assemblies (6) are fixedly installed on the lower parts of the ends of the two support rods (4) located on the left side and the lower parts of the ends of the two support rods (4) located on the right side.

2. The stability detection device of a portal steel frame support system according to claim 1, characterized in that: 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; 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; the plurality of springs (34) are located between the plurality of pressing columns (33) and the pressing plates (32). On the outside of the pressing column (33), the lower parts of the outer surfaces of the pressing columns (33) penetrate the bottom wall of the material storage box (31) and extend to the outside, the lower ends of the pressing columns (33) are provided with guide holes (35), the inner surfaces of the guide holes (35) are slidably connected with guide rods (36), the lower ends of the 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).

3. The stability detection device of a portal steel frame support system according to claim 2, characterized in that: The top test assembly (5) comprises two inclined plates (51) which 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 which are close to each other. The two support rods (4) on the left side and the ends of the two support rods (4) on the right side which are close to each other are fixedly connected to a connecting plate (52). 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 plurality of measuring columns (54) in a linear array. The lower parts of the outer surfaces of the plurality of measuring columns (54) penetrate 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) which are close to each other. The plurality of springs (55) are respectively located on the outside of the plurality of measuring columns (54). The inner surface of the slide groove (53) is slidably connected to an L-shaped measuring plate (56).

4. The stability detection device of a portal steel frame support system according to claim 3 is characterized in that: The lower ends of the plurality of pressing inclined blocks (37) on the left side and the lower ends of the plurality of pressing inclined 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.

5. The stability detection device of a portal steel frame support system according to claim 3 is characterized in that: The left and right test assemblies (6) comprise 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 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, the left side and the right side of the front end of the connecting plate (61) are both fixedly connected to a C-shaped plate (62), the ends of the two C-shaped plates (62) that are away from each other are both 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 that are close to each other are both 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 fixedly connected to the C-shaped plates (62) on the left side and the right side. The four special-shaped blocks (64) are symmetrically distributed on the left and right sides, the middle parts of the lower ends of the four special-shaped blocks (64) are 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 ends 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 outsides 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 ends 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 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).

6. The stability detection device of a portal steel frame support system according to claim 5, characterized in that: 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.

7. The stability detection device of a portal steel frame support system according to claim 5, 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.

8. The stability detection device of a portal steel frame support system according to claim 3 is characterized in that: The heights of the plurality of measuring columns (54) are arranged to increase in sequence from the outside to the inside.

9. The stability detection device of a portal steel frame support system according to claim 5, 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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