Profile leveling device for prefabricated steel truss

Abstract

The utility model provides a sectional material leveling device for a prefabricated steel truss. Each sectional material is provided with a plurality of installation positions. Comprising a plurality of supporting assemblies which are located below the profile and used for being connected with a plurality of mounting positions in a one-to-one correspondence mode, and each supporting assembly comprises a first mounting plate and a second mounting plate; the upper side surface of the first mounting plate is provided with a first groove which is through along the horizontal direction and is used for embedding a profile; the second mounting plate is used for being fixed on the horizontal plane, is located below the first mounting plate and is connected with the first mounting plate through an adjusting mechanism; when the sectional material is embedded into the first groove and the second mounting plate is connected with the first mounting plate through the adjusting mechanism, the adjusting mechanism can enable the distance between the second mounting plate and the first mounting plate to be increased or decreased so as to adjust the height of the sectional material relative to the horizontal plane. The profile leveling device for the prefabricated steel truss provided by the utility model can be adaptively mounted on construction sites with different flatness, so that the leveling of the profile is time-saving and labor-saving, and the quality stability of the steel truss is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of steel truss manufacturing, and more specifically, to a profile leveling device for prefabricated steel trusses. Background Art

[0002] Steel trusses refer to trusses made of steel. They are often used as the main load-bearing components in roof structures of industrial and civil buildings, crane beams, bridges and hydraulic gates.

[0003] At present, in order to shorten the construction period, steel trusses are usually prefabricated at the construction site before installation. During prefabrication, the construction workers first place the profiles required for the steel trusses on the ground, then accurately adjust the position of each profile according to the drawings, and then weld the joints between adjacent profiles.

[0004] The inventors found that since the flatness of the construction site is difficult to ensure, adjacent profiles are difficult to align, resulting in a technical defect that the quality stability of the steel truss is reduced; at the same time, since the leveling of the profiles is time-consuming and labor-intensive, the prefabrication efficiency of the steel truss cannot be guaranteed. Utility Model Content

[0005] The purpose of the present application is to provide a profile leveling device for prefabricated steel trusses to solve the technical problems in the prior art that the profile leveling step required for the steel trusses is time-consuming and labor-intensive, and the prefabrication quality cannot be guaranteed during the prefabrication of the steel trusses.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a profile leveling device for prefabricated steel trusses, each of which has a plurality of mounting positions; characterized in that it includes a plurality of support assemblies located below the profile and used to be connected to the plurality of mounting positions one by one, and the support assemblies include:

[0007] A first mounting plate, the upper side of which has a first groove that runs through in the horizontal direction and is used for the profile to be embedded; and

[0008] A second mounting plate, used for fixing on a horizontal plane, located below the first mounting plate, and connected to the first mounting plate through an adjustment mechanism;

[0009] When the profile is embedded in the first groove and the second mounting plate is connected to the first mounting plate through the adjustment mechanism, the adjustment mechanism can increase or decrease the distance between the second mounting plate and the first mounting plate to adjust the height of the profile relative to the horizontal plane.

[0010] Preferably, the adjustment mechanism comprises:

[0011] a rotating column, located between the first mounting plate and the second mounting plate, with its axial direction parallel to the up-down direction, and connected to the second mounting plate; and

[0012] A lifting member, located between the first mounting plate and the second mounting plate, with a top end fixedly connected to the bottom surface of the first mounting plate, and having a groove body with an opening facing downward and suitable for inserting the rotating column;

[0013] When the profile is embedded in the first groove and the rotating column is inserted into the groove body, the lifting member can move in the up and down directions relative to the rotating column to increase or decrease the distance between the second mounting plate and the first mounting plate, thereby adjusting the height of the profile relative to the horizontal plane.

[0014] Preferably, an internal thread structure is provided on the inner peripheral wall of the trough body; the rotating column is rotatably connected to the second mounting plate along the up-down direction, and the insertion end of the rotating column has an external thread structure suitable for threaded connection with the internal thread structure;

[0015] Wherein, when the profile is embedded in the first groove, the rotating column is inserted into the groove body and rotates relative to the lifting member, the lifting member can rise or fall relative to the rotating column.

[0016] Preferably, the outer wall of the rotating column is provided with a plurality of operating rods spaced apart along its circumference; each of the operating rods extends radially outwardly along the rotating column, and the extending end of each operating rod has a spherical handle.

[0017] Preferably, the inner wall of the trough body is provided with a plurality of positioning holes penetrating the outer wall of the lifting member; each of the positioning holes is provided with a first bolt suitable for abutting against the rotating column, and the first bolt is threadedly connected to the positioning hole.

[0018] Preferably, the first mounting plate has a plurality of second bolts spaced apart in the horizontal direction; each of the second bolts is threadedly connected to the first mounting plate in the horizontal direction, and its axial direction is perpendicular to the extending direction of the first groove;

[0019] When the profile is embedded in the first groove, the second bolt can be screwed in to abut against the profile to limit the profile from exiting the first groove.

[0020] Preferably, the leveling device further comprises:

[0021] A plurality of bases are used for being installed on the ground, and are connected one by one with a plurality of the supporting components located between the ground and the profiles.

[0022] Preferably, the base comprises:

[0023] A base plate for fixed installation on the ground; and

[0024] A top plate is slidably connected to the upper side of the bottom plate in a horizontal direction, and its top is connected to the bottom of the second mounting plate; the sliding direction of the top plate is perpendicular to the extending direction of the first groove; a third bolt is provided between the top plate and the bottom plate;

[0025] Wherein, the third bolt is threadedly connected to the bottom plate or the top plate; when the top plate is connected to the bottom plate and the top plate is connected to the second mounting plate, the third bolt is suitable for being screwed into abutting the top plate or the bottom plate to limit the relative movement between the top plate and the bottom plate.

[0026] Preferably, the lower side of the second mounting plate has a second groove which runs through in the horizontal direction and is suitable for the profile to be embedded.

[0027] Preferably, the second mounting plate has a plurality of second bolts spaced apart in the horizontal direction; each of the second bolts is threadedly connected to the second mounting plate in the horizontal direction, and its axial direction is perpendicular to the extending direction of the second groove;

[0028] When the profile is embedded in the second groove, the second bolt can be screwed in to abut against the profile to limit the profile from exiting the second groove.

[0029] In the embodiment of the present application, when prefabricating steel trusses, a support assembly is placed under the installation position of each profile required for prefabrication of the steel trusses, and then the profile is embedded in the first groove on the upper side of the first mounting plate. The first groove can ensure that the profile does not shift during prefabrication of the steel trusses. Finally, the adjustment mechanism between the first mounting plate and the second mounting plate is adjusted to increase or decrease the spacing between the second mounting plate and the first mounting plate until the profile surface remains parallel to the horizontal plane; when the surfaces of multiple profiles are adjusted to be on the same horizontal plane, the construction personnel weld the seams between adjacent profiles together to complete the prefabrication of the steel trusses; when lifting is required, the prefabricated steel trusses can be directly lifted from multiple support assemblies to the construction site, and the remaining support assemblies can be recycled.

[0030] Compared with the prior art, the profile leveling device for prefabricated steel trusses provided in the embodiment of the present application can adapt to installation on construction sites with different flatness, making the leveling of the profiles time-saving and labor-saving, and improving the quality stability of the steel trusses. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 Schematic diagram of the three-dimensional structure of the profile leveling device for prefabricated steel trusses provided in the embodiment of the present application Figure 1 (Single-layer profile leveling);

[0033] Figure 2 Schematic diagram of the three-dimensional structure of the profile leveling device for prefabricated steel trusses provided in the embodiment of the present application Figure 2 (Leveling of multi-layer profiles);

[0034] Figure 3 A schematic diagram of the three-dimensional structure of the support assembly provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of the main structure of the support assembly provided in an embodiment of the present application;

[0036] Figure 5 For along Figure 4 Schematic diagram of the cross-sectional structure along the AA line;

[0037] Figure 6 A schematic diagram of the three-dimensional structure of a base provided in an embodiment of the present application;

[0038] Among them, the reference numerals in the figure are:

[0039] 1. Support assembly; 11. First mounting plate; 111. First groove; 12. Second mounting plate; 121. Second groove; 13. Second bolt; 2. Adjustment mechanism; 21. Rotating column; 211. External thread structure; 22. Lifting member; 221. Groove body; 222. Internal thread structure; 23. Operating lever; 231. Ball handle; 24. First bolt; 3. Base; 31. Bottom plate; 32. Top plate; 33. Third bolt; 4. Profile. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] See also Figure 3 The profile leveling device for prefabricated steel trusses provided in the present application is now described. The profile leveling device for prefabricated steel trusses has multiple installation positions on each profile 4, including multiple support assemblies 1 located below the profile 4 and used to correspond to the multiple installation positions one by one, and the support assemblies 1 include a first mounting plate 11 and a second mounting plate 12.

[0045] It should be noted that the mounting positions are mounting points on the profile 4 that are symmetrically distributed with the center of gravity of the profile 4 as the center; when multiple support components 1 are connected to multiple mounting positions one by one, the weight of the profile 4 can be evenly distributed to the support components 1 under each mounting position, so that the profile 4 can be stably supported.

[0046] The upper side surface of the first mounting plate 11 has a first groove 111 which penetrates in the horizontal direction and is used for the profile 4 to be embedded. The size of the notch of the first groove 111 can be adjusted according to the size of the profile 4 .

[0047] The second mounting plate 12 is used to be fixed on a horizontal plane. The second mounting plate 12 is located below the first mounting plate 11 , and the second mounting plate 12 is connected to the first mounting plate 11 through an adjusting mechanism 2 .

[0048] When the profile 4 is embedded in the first groove 111 and the second mounting plate 12 is connected to the first mounting plate 11 through the adjustment mechanism 2, the adjustment mechanism 2 can increase or decrease the distance between the second mounting plate 12 and the first mounting plate 11 to adjust the height of the profile 4 relative to the horizontal plane.

[0049] In the embodiment of the present application, when prefabricating the steel truss, a support assembly 1 is placed under the installation position of each profile 4 required for the prefabrication of the steel truss, and then the profile 4 is embedded in the first groove 111 on the upper side of the first mounting plate 11. The first groove 111 can ensure that the profile 4 does not shift during the prefabrication of the steel truss. Finally, the adjustment mechanism 2 between the first mounting plate 11 and the second mounting plate 12 is adjusted to increase or decrease the distance between the second mounting plate 12 and the first mounting plate 11 until the surface of the profile 4 remains parallel to the horizontal plane; when the surfaces of multiple profiles 4 are adjusted to be in the same horizontal plane, the construction personnel weld the seams between adjacent profiles 4 together to complete the prefabrication of the steel truss; when hoisting is required, the prefabricated steel truss can be directly hoisted from multiple support assemblies 1 to the construction site, and the remaining support assemblies 1 can be recycled.

[0050] Compared with the prior art, the profile leveling device for prefabricated steel trusses provided in the embodiment of the present application can adapt to installation on construction sites with different flatness, making the leveling of the profile 4 time-saving and labor-saving, and improving the quality stability of the steel trusses.

[0051] In some embodiments, please refer to Figures 3 to 5 As a specific implementation of the profile leveling device for prefabricated steel trusses provided in the present application, the adjustment mechanism 2 includes a rotating column 21 and a lifting member 22.

[0052] The rotating column 21 is located between the first mounting plate 11 and the second mounting plate 12 . The axial direction of the rotating column 21 is parallel to the up-down direction, and the rotating column 21 is drivingly connected to the second mounting plate 12 .

[0053] The lifting member 22 is located between the first mounting plate 11 and the second mounting plate 12 , the top of the lifting member 22 is fixedly connected to the bottom surface of the first mounting plate 11 , and the lifting member 22 has a groove 221 with an opening facing downward and suitable for inserting the rotating column 21 .

[0054] When the profile 4 is embedded in the first groove 111 and the rotating column 21 is inserted into the groove body 221, the lifting member 22 can move in the up and down directions relative to the rotating column 21 to increase or decrease the distance between the second mounting plate 12 and the first mounting plate 11, thereby adjusting the height of the profile 4 relative to the horizontal plane.

[0055] In some embodiments, please refer to Figures 3 to 5As a specific embodiment of the profile leveling device for prefabricated steel trusses provided in the present application, an internal thread structure 222 is provided on the inner circumferential wall of the groove body 221; the rotating column 21 is rotatably connected to the second mounting plate 12 along the up and down directions, and the insertion end of the rotating column 21 has an external thread structure 211 suitable for threaded connection with the internal thread structure 222.

[0056] When the profile 4 is embedded in the first groove 111 and the rotating column 21 is inserted into the groove body 221 and rotates relative to the lifting member 22 , the lifting member 22 can rise or fall relative to the rotating column 21 .

[0057] By adopting the above technical scheme, the rotating column 21 and the lifting member 22 together form a forward and reverse thread transmission screw structure. The forward and reverse thread transmission screw has the advantages of stable transmission, small space occupation and easy operation. Therefore, construction personnel can realize the toward or away movement of the rotating column and the lifting member 22 by simply rotating the rotating column 21.

[0058] In some embodiments, see Figure 6 As a specific embodiment of the profile leveling device for prefabricated steel trusses provided in the present application, the outer wall of the rotating column 21 has a plurality of operating rods 23 arranged at intervals along its circumference; each operating rod 23 extends radially outward along the rotating column 21, and the extended end of each operating rod 23 has a spherical handle 231.

[0059] By adopting the above technical solution, construction workers can more conveniently apply external force to the rotating column 21 to make it rotate, thereby improving construction work efficiency.

[0060] In some embodiments, please refer to Figure 3 and Figure 4 As a specific embodiment of the profile leveling device for prefabricated steel trusses provided in the present application, the inner wall of the trough body 221 has a plurality of positioning holes penetrating the outer wall of the jacking member 22; each positioning hole has a first bolt 24 suitable for abutting the rotating column 21, and the first bolt 24 is threadedly connected to the positioning hole.

[0061] By adopting the above technical solution, after the construction personnel rotate the rotating column 21 to make the surface level of the profile 4 meet the prefabrication construction requirements, the construction personnel screw the first bolt 24 into the positioning hole and abut against the rotating column 21 to limit the rotation of the rotating column 21, and then lock the distance between the first mounting plate 11 and the second mounting plate 12, ensuring that the level of the profile 4 does not change during the prefabrication construction, thereby improving the dimensional accuracy of the prefabricated steel truss.

[0062] In some embodiments, see Figures 1 to 5As a specific embodiment of the profile leveling device for prefabricated steel trusses provided in the present application, the first mounting plate 11 has a plurality of second bolts 13 arranged at intervals in the horizontal direction; each second bolt 13 is threadedly connected to the first mounting plate 11 in the horizontal direction, and its axial direction is perpendicular to the extension direction of the first groove 111.

[0063] When the profile 4 is embedded in the first groove 111 , the second bolt 13 can be screwed in to abut against the profile 4 to limit the profile 4 from exiting the first groove 111 .

[0064] By adopting the above technical solution, the abutment between the plurality of second bolts 13 and the profile 4 can ensure that the profile 4 will not be separated from the first groove 111 due to vibration when the profile 4 is leveled, thereby improving the supporting stability of the profile 4.

[0065] In some embodiments, please refer to Figure 1 and Figure 2 As a specific implementation of the profile leveling device for prefabricated steel trusses provided in the present application, the leveling device also includes multiple bases 3.

[0066] The multiple bases 3 are used to be installed on the ground, and the multiple bases 3 are connected to the multiple supporting components 1 located between the ground and the profile 4 in a one-to-one correspondence.

[0067] The base 3 is made of cement or metal and is fixedly installed on the construction site by construction workers before the prefabrication of the steel truss. The construction workers then pre-level the base 3 to prevent potholes on the ground from interfering with the installation of the support assembly 1.

[0068] In some embodiments, please refer to Figure 1 and Figure 2 As a specific implementation of the profile leveling device for prefabricated steel trusses provided in the present application, the base 3 includes a bottom plate 31 and a top plate 32 .

[0069] The bottom plate 31 is used for being fixedly installed on the ground. The bottom plate 31 can be fixed on the ground by pre-embedded anchor bars or casting to ensure that the bottom plate 31 has good supporting performance.

[0070] The top plate 32 is slidably connected to the upper side of the bottom plate 31 in the horizontal direction, and its top is connected to the bottom of the second mounting plate 12; the sliding direction of the top plate 32 is perpendicular to the extension direction of the first groove 111; there is a third bolt 33 between the top plate 32 and the bottom plate 31.

[0071] Among them, the third bolt 33 is threadedly connected to the bottom plate 31 or the top plate 32; when the top plate 32 is connected to the bottom plate 31 and the top plate 32 is connected to the second mounting plate 12, the third bolt 33 is suitable for screwing into the top plate 32 or the bottom plate 31 to limit the relative movement between the top plate 32 and the bottom plate 31.

[0072] By adopting the above technical solution, since the sliding direction of the top plate 32 is perpendicular to the extension direction of the first groove 111, the base 3 and the adjustment assembly can cooperate to achieve fine-tuning of the profile 4 in the front-to-back, left-to-right and up-and-down directions. When adjacent profiles 4 are connected and butt-jointed, the position of the profile 4 can be easily adjusted, thereby improving the prefabrication efficiency of the steel truss.

[0073] In some embodiments, please refer to Figure 3 and Figure 4 As a specific embodiment of the profile leveling device for prefabricated steel trusses provided in the present application, the lower side of the second mounting plate 12 has a second groove 121 that runs through in the horizontal direction and is suitable for the profile 4 to be embedded.

[0074] After completing the prefabrication construction of a steel truss, a second group of support components 1 can be installed above each installation position of the steel truss, and the construction personnel continue to install the profiles 4 above the second group of support components 1 to carry out the prefabrication construction of the second steel truss; and two adjacent profiles 4 can be respectively embedded in the first groove 111 and the second groove 121, thereby ensuring the stability between the multiple profiles 4.

[0075] By adopting the above technical solution, the prefabricated steel trusses are placed in the vertical direction, which reduces the floor space occupied by the prefabrication of the steel trusses, and enables the construction site to prefabricate more steel trusses.

[0076] In some embodiments, please refer to Figures 1 to 4 As a specific embodiment of the profile leveling device for prefabricated steel trusses provided in the present application, the second mounting plate 12 has a plurality of second bolts 13 arranged at intervals in the horizontal direction; each second bolt 13 is threadedly connected to the second mounting plate 12 in the horizontal direction, and its axial direction is perpendicular to the extension direction of the second groove 121.

[0077] When the profile 4 is embedded in the second groove 121 , the second bolt 13 can be screwed in to abut against the profile 4 to limit the profile 4 from exiting the second groove 121 .

[0078] It should be noted that when the base 3 is connected to the supporting assembly 1 located between the ground and the profile 4, the second groove 121 is suitable for connecting with the top plate 32, and part of the top plate 32 is suitable for being embedded in the second groove 121. At this time, the second bolt 13 can be screwed in to abut the top plate 32 to limit the top plate 32 from withdrawing from the second groove 121.

[0079] By adopting the above technical solution, the abutment between multiple second bolts 13 and the profile 4 can ensure that the profile 4 will not fall out of the second groove 121 due to vibration when the profile 4 is leveled, thereby improving the stability of the profile 4; when the second groove 121 is connected to the top plate 32, the abutment between multiple second bolts 13 and the top plate 32 can ensure that the connection between the support assembly 1 and the base 3 is firm, thereby improving the supporting performance of the support assembly 1.

[0080] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A profile leveling device for prefabricated steel trusses, each of which has a plurality of mounting positions; characterized in that: It includes a plurality of supporting components located below the profile and used to be connected to the plurality of mounting positions one by one, and the supporting components include: A first mounting plate, the upper side of which has a first groove that runs through in the horizontal direction and is used for the profile to be embedded; and A second mounting plate, used for fixing on a horizontal plane, located below the first mounting plate, and connected to the first mounting plate through an adjustment mechanism; When the profile is embedded in the first groove and the second mounting plate is connected to the first mounting plate through the adjustment mechanism, the adjustment mechanism can increase or decrease the distance between the second mounting plate and the first mounting plate to adjust the height of the profile relative to the horizontal plane.

2. The profile leveling device for prefabricated steel trusses according to claim 1, characterized in that: The regulating mechanism comprises: a rotating column, located between the first mounting plate and the second mounting plate, with its axial direction parallel to the up-down direction, and connected to the second mounting plate; and A lifting member, located between the first mounting plate and the second mounting plate, with a top end fixedly connected to the bottom surface of the first mounting plate, and having a groove body with an opening facing downward and suitable for inserting the rotating column; When the profile is embedded in the first groove and the rotating column is inserted into the groove body, the lifting member can move in the up and down directions relative to the rotating column to increase or decrease the distance between the second mounting plate and the first mounting plate, thereby adjusting the height of the profile relative to the horizontal plane.

3. The profile leveling device for prefabricated steel trusses according to claim 2, characterized in that: An internal thread structure is provided on the inner peripheral wall of the groove body; the rotating column is rotatably connected with the second mounting plate in the up-down direction, and the insertion end of the rotating column has an external thread structure suitable for threaded connection with the internal thread structure; Wherein, when the profile is embedded in the first groove, the rotating column is inserted into the groove body and rotates relative to the lifting member, the lifting member can rise or fall relative to the rotating column.

4. The profile leveling device for prefabricated steel trusses according to claim 2, characterized in that: The outer wall of the rotating column is provided with a plurality of operating rods spaced along the circumference thereof; each of the operating rods extends outwardly along the radial direction of the rotating column, and the extending end of each operating rod is provided with a spherical handle.

5. The profile leveling device for prefabricated steel trusses according to claim 2, characterized in that: The inner wall of the trough body is provided with a plurality of positioning holes penetrating through the outer wall of the lifting member; each of the positioning holes is provided with a first bolt suitable for abutting against the rotating column, and the first bolt is threadedly connected with the positioning hole.

6. The profile leveling device for prefabricated steel trusses according to claim 1, characterized in that: The first mounting plate has a plurality of second bolts spaced apart in the horizontal direction; each of the second bolts is threadedly connected to the first mounting plate in the horizontal direction, and its axial direction is perpendicular to the extension direction of the first groove; When the profile is embedded in the first groove, the second bolt can be screwed in to abut against the profile to limit the profile from exiting the first groove.

7. The profile leveling device for prefabricated steel trusses according to claim 1, characterized in that: The leveling device also includes: A plurality of bases are used for being installed on the ground, and are connected one by one with a plurality of the supporting components located between the ground and the profiles.

8. The profile leveling device for prefabricated steel trusses according to claim 7, characterized in that: The base comprises: A base plate for fixed installation on the ground; and A top plate is slidably connected to the upper side of the bottom plate in a horizontal direction, and its top is connected to the bottom of the second mounting plate; the sliding direction of the top plate is perpendicular to the extending direction of the first groove; a third bolt is provided between the top plate and the bottom plate; Wherein, the third bolt is threadedly connected to the bottom plate or the top plate; when the top plate is connected to the bottom plate and the top plate is connected to the second mounting plate, the third bolt is suitable for being screwed into abutting the top plate or the bottom plate to limit the relative movement between the top plate and the bottom plate.

9. The profile leveling device for prefabricated steel trusses according to any one of claims 1 to 8, characterized in that: The lower side of the second mounting plate has a second groove which runs through in the horizontal direction and is suitable for the profile to be embedded.

10. The profile leveling device for prefabricated steel trusses according to claim 9, characterized in that: The second mounting plate has a plurality of second bolts spaced apart in the horizontal direction; each of the second bolts is threadedly connected to the second mounting plate in the horizontal direction, and its axial direction is perpendicular to the extension direction of the second groove; When the profile is embedded in the second groove, the second bolt can be screwed in to abut against the profile to limit the profile from exiting the second groove.

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