CN111745574B

CN111745574B - Steel structure clamp

Info

Publication number: CN111745574B
Application number: CN202010591456.5A
Authority: CN
Inventors: 廖新辉; 张杠杠; 葛广建
Original assignee: Zhejiang Changjin Construction Co ltd
Current assignee: Zhejiang Changjin Construction Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-07-30
Anticipated expiration: 2040-06-24
Also published as: CN111745574A

Abstract

The invention relates to a steel structure clamp, which relates to the technical field of building installation clamps and comprises an installation seat, wherein a first bracket is arranged on the outer side wall of the installation seat, and a first clamping groove with an upward opening is arranged on the first bracket; a sliding groove is formed in the mounting seat, and a second support and a third support are arranged in the sliding groove in a sliding mode along the vertical direction; the top end of the second bracket penetrates out of the opening at the upper end of the sliding groove, and a second clamping groove is formed in the second bracket; the lower end of the third support penetrates out of the bottom opening of the sliding groove, and a third clamping groove with an upward opening is formed in the third support after the third support penetrates out; a pressing plate penetrating out of the opening in the side face of the sliding groove is arranged at the upper end of the third support and is positioned above the first clamping groove; the second bracket is provided with a fixing piece, the lower end of the fixing piece is abutted against the pressing plate, and the pressing plate is pressed on the first clamping groove by the fixing piece.

Description

Steel structure clamp

Technical Field

The invention relates to the technical field of building installation clamps, in particular to a steel structure clamp.

Background

Steel structures are structures composed of steel materials and are one of the main building structure types. The structure mainly comprises beam steel, steel columns, steel trusses and other members made of section steel, steel plates and the like, and rust removing and preventing processes such as silanization, pure manganese phosphating, washing drying, galvanization and the like are adopted. The components or parts are typically joined by welds, bolts or rivets. Because of its light dead weight, and construction is simple and convenient, widely apply to fields such as large-scale factory building, venue, superelevation layer.

Chinese patent with publication number CN206351424U discloses a special assembly fixture for steel structure among the prior art, the on-line screen storage device comprises a base, the top of base is connected with the stand, the outer wall of stand is opened threadedly, the outer wall of stand has cup jointed the thread bush, the outer wall middle part of thread bush is provided with the spheroid, the active sleeve has been cup jointed to spheroidal outer wall, the preceding back wall of active sleeve all is connected with the bolt, the outer wall connection of bolt has bite plate down, lower bite plate package rubbing board is the plate body, the left end of plate body outer wall is provided with the interlock tooth, the center department of plate body outer wall is opened logical groove, the bolt seat is all installed to the top and the bottom that lead to the inslot chamber, the right-hand member of plate body outer wall is opened there is spacing hole. The top of the upright post is connected with an upper bite plate through a pin shaft. During installation, the base is fixed on the workbench, the threaded sleeve is rotated by hands, the threaded sleeve is made to ascend through the action of threads on the outer wall of the threaded sleeve and the outer wall of the stand column, the threaded sleeve drives the movable sleeve and the bolt to ascend, the latch drives the lower bite plate to ascend, the steel structure is arranged at the left end between the lower bite plate and the upper bite plate, the limiting screw is taken down, the height of the adjusting rod is adjusted, and the lower bite plate and the upper bite plate clamp the steel structure tightly. This special assembly jig of steel construction has and bites down the distance between interlock board and the last interlock board and can adjust, the stronger effect of suitability.

The above prior art solutions have the following drawbacks: when the steel structure cross beam is installed, an installer needs to install a plurality of parallel cross beams on the same constructional column according to the installation requirement, and the fixture in the patent can only meet the installation requirement of one cross beam at a time when being installed; the installation work of a plurality of cross beams is difficult to meet, and then installation personnel can install a plurality of clamps on the constructional column to complete the installation of the plurality of cross beams; this not only results in waste of material, but also extends the cycle time of installation.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a steel structure clamp which has the effects of simultaneously meeting the requirements of installation and fixation of a plurality of groups of steel structure beams and having a stable structure.

The above object of the present invention is achieved by the following technical solutions:

a steel structure clamp comprises a mounting seat, wherein a first bracket is arranged on the outer side wall of the mounting seat, and a first clamping groove with an upward opening is formed in the first bracket; a sliding groove is formed in the mounting seat, and a second support and a third support are arranged in the sliding groove in a sliding mode along the vertical direction; the top end of the second bracket penetrates out of an opening at the upper end of the sliding groove, and a second clamping groove with an upward opening is formed in the second bracket after the second bracket penetrates out; the lower end of the third support penetrates out of the bottom opening of the sliding groove, and a third clamping groove with an upward opening is formed in the third support after the third support penetrates out; a pressing plate penetrating out of the opening in the side face of the sliding groove is arranged at the upper end of the third support and is positioned above the first clamping groove; the second support is provided with a fixing piece located above the pressing plate, the lower end of the fixing piece is abutted to the pressing plate, and the pressing plate is pressed by the fixing piece to the opening in the upper end of the first clamping groove.

By adopting the technical scheme, when the main beam is installed, the installation seat is fixed on the constructional column through a fastener or a welding mode; then, the end part of the main beam is inserted into the first bracket through the first clamping groove, after the main beam is tightly inserted into the first bracket, the pressing plate is pushed by the fixing piece to gradually move downwards, and the pressing plate can finally further press the main beam into the first clamping groove along with the continuous downward movement of the pressing plate; the pressing plate can cover the upper end opening of the first clamping groove, so that the end part of the main beam is in a relatively stable environment, the stability of the connection part of the main beam is enhanced, and the adverse interference of the external environment on the main beam can be reduced; after the main cross beam is fixed, the upper cross beam is placed at the upper end of the second support through the second clamping groove, and when the upper cross beam is fixed on the second support, pressure can be applied to the fixing piece again under the action of the gravity of the upper cross beam, so that the fixing piece can more stably and firmly compress the pressing plate; finally, the lower cross beam is arranged at the lower end of the third support through the third clamping groove, after the lower cross beam is fixed, the pressing plate is further pressed on the main cross beam under the action of the gravity of the lower cross beam again, and the main cross beam is simultaneously subjected to the gravity of the upper cross beam and the lower cross beam, so that the heavy structure of the main cross beam can be greatly enhanced; and the installation of a plurality of crossbeams can be realized through one clamp, the installation is convenient, the crossbeams are mutually compressed and restrained, and the structure is stable.

The present invention in a preferred example may be further configured to: the third support comprises a plurality of vertical connecting rods arranged side by side, and the side surface of the second support is provided with a abdicating groove with an opening facing the first support; the connecting rod penetrates into the abdicating groove from the bottom of the second support and is arranged in the sliding groove in a sliding mode along the vertical direction; the pressing plate is fixedly arranged at the upper end of the connecting rod, and the lower end of the connecting rod penetrates out of the bottom of the mounting seat; the third bracket also comprises a transverse plate fixed at the bottom of the connecting rod, and the third clamping groove is arranged on the transverse plate; the connecting rod is sleeved with a return spring positioned in the yielding groove, the upper end of the return spring is abutted to the pressing plate, and the lower end of the return spring is abutted to the lower side wall of the yielding groove.

By adopting the technical scheme, the pressing plate is sprung upwards under the action of the elastic force of the reset spring in a natural state, so that the pressing plate is separated from the upper end opening of the first clamping groove, and the main cross beam can be inserted from the upper end opening of the first clamping groove more smoothly when the main cross beam is installed, thereby facilitating the installation of the main cross beam; when the pressure plate moves downwards gradually under the action of the fixing piece, the return spring is compressed gradually.

The present invention in a preferred example may be further configured to: the second bracket comprises a main plate arranged in the sliding groove in a sliding manner, an upper cover plate arranged at the top end of the main plate and a lower cover plate arranged at the bottom of the main plate; the abdicating groove is arranged on the side surface of the main board, and the second clamping groove is arranged on the upper cover plate; the connecting rod extends into the lower cover plate from the bottom of the lower cover plate, and one end of the lower cover plate penetrates out of the sliding groove to be below the first support; a buffer spring positioned at the bottom of the lower cover plate is vertically arranged in the sliding groove, the upper end of the buffer spring is abutted against the bottom of the lower cover plate, and the lower end of the buffer spring is abutted against the sliding groove; the lower cover plate in a natural state is abutted against the bottom surface of the first support under the action of the buffer spring.

By adopting the technical scheme, when the upper cross beam is placed on the second support, the height of the second support is gradually reduced, and the buffer spring is also gradually compressed; can play the effect of shock attenuation buffering to the second support through buffer spring, reduce the impact force that the entablature caused the mount pad bottom in the twinkling of an eye inserting to played the effect of buffering protection to the mount pad, prolonged the life of mount pad.

The present invention in a preferred example may be further configured to: the bottom of the upper cover plate is provided with a backing groove with an opening facing the pressure plate, the fixing part comprises a rotating rod hinged in the backing groove, and a pressure rod in threaded connection with the rotating rod; the dwang rotates along vertical direction around self articulated shaft, the one end that the dwang was kept away from to the depression bar is provided with the rubber pad.

By adopting the technical scheme, when the upper cross beam is installed, one end of the fixing piece is firstly rotated out of the retreat slot to be in a vertical state; the upper cross beam is fixedly arranged in the second clamping groove, then the whole length of the fixing piece is gradually extended by rotating the pressing rod, and the pressing rod pushes the pressing plate below the pressing rod to be tightly pressed on the main cross beam; along with the continuous extension of the length of the fixing piece, the height of the lower cover plate gradually rises under the action of the fixing piece, and when the lower cover plate rises to be attached to the bottom surface of the first support, the second support rises to the highest position; the lower cover plate tightly pressed on the bottom surface of the first support can further enhance the bearing capacity of the first support, and plays a role in supporting the first support, so that the first support is more stable and firm; when the both ends of entablature highly appear squinting, can conveniently finely tune the both ends height of entablature through adjusting the mounting, make entablature both ends keep the horizontality.

The present invention in a preferred example may be further configured to: the pressing plate is provided with an inserting block facing the first clamping groove, and the inserting block moves along the vertical direction along with the pressing plate; the bottom of the first support is provided with a through hole, an insertion rod facing the through hole is arranged on the lower cover plate, and the upper end of the insertion rod is inserted into the first clamping groove through the through hole.

By adopting the technical scheme, when the pressing plate is pressed on the main cross beam, the inserting block is inserted into the inserting hole preset on the main cross beam, and the limiting fixation of the main cross beam can be further enhanced by the mutual insertion of the inserting block and the inserting hole; when the main cross beam is vibrated along the horizontal direction, the main cross beam can be firmly limited in the first clamping groove by the inserting block, so that the main cross beam is prevented from falling off, and the reliability of the main cross beam is enhanced; when the lower cover plate is pressed on the bottom surface of the first support, the inserting rods are inserted into the inserting holes of the main cross beam from the bottom through holes, and therefore the fixation of the main cross beam can be further enhanced.

The present invention in a preferred example may be further configured to: one side that the mount pad deviates from first support is provided with along the first mounting groove of self direction of height, still seted up on the mount pad with first mounting groove vertically second mounting groove, first mounting groove communicates with each other with the second mounting groove.

By adopting the technical scheme, when the mounting seat is mounted, the mounting seat is clamped on the constructional column through the first mounting groove, so that the mounting seat can be conveniently and preliminarily mounted on the vertical constructional column, and the first mounting groove realizes the limiting and fixing of the mounting seat along the horizontal direction; the second mounting groove is clamped on the horizontal transverse column of the constructional column, so that the mounting seat can be limited and fixed in the vertical direction; the mounting seat is more stable and firm.

The present invention in a preferred example may be further configured to: a driving piece is arranged in the first mounting groove in a sliding mode along the vertical direction, and the lower end of the driving piece penetrates out of the bottom of the mounting seat and is fixed with the third support; clamping plates are arranged on a group of inner side walls opposite to the first mounting groove in a sliding mode along the horizontal direction, and the two clamping plates are symmetrically arranged on two sides of the driving piece; the driving piece is hinged with connecting rods facing the clamping plates respectively, and the other ends of the connecting rods are hinged with the clamping plates.

Through adopting above-mentioned technical scheme, when the height of third support moved down gradually, the third support will drive the driving piece and move down gradually, will drive splint through the connecting rod of driving piece both sides and remove to the direction that is close to each other gradually, and the decurrent pressure of driving piece will be applyed simultaneously to bottom end rail and entablature, makes the splint of driving piece both sides can tightly the centre gripping with the constructional column in the first mounting groove, makes the mount pad can be more stable and firm fixed chucking on the constructional column.

The present invention in a preferred example may be further configured to: the driving piece is sleeved with a compression spring located in the mounting seat, the lower end of the compression spring is abutted to the mounting seat, and the upper end of the compression spring is abutted to the upper end of the driving piece.

Through adopting above-mentioned technical scheme, when the driving piece moves down along with the third support, because the third support is great to the power of exerting of driving piece, compression spring can play the effect of buffering protection to mount pad and driving piece when the driving piece moves down, reduces the impact force that the driving piece produced the mount pad inner wall, makes the mount pad remain stable.

In summary, the invention includes at least one of the following beneficial technical effects:

1. after the upper cross beam and the lower cross beam are installed, the main cross beam is subjected to the gravity of the upper cross beam and the gravity of the lower cross beam at the same time, so that the heavy structure of the main cross beam can be greatly enhanced; the installation of a plurality of cross beams can be realized through one clamp, the installation is convenient, the cross beams are mutually compressed and restrained, and the stability of the whole structure is improved;

2. the buffer spring can play a role in damping and buffering the second support, and the impact force of the upper cross beam on the bottom of the mounting seat at the moment of insertion is reduced, so that the effect of buffering and protecting the mounting seat is achieved, and the service life of the mounting seat is prolonged;

3. when the main cross beam is vibrated along the horizontal direction, the main cross beam can be firmly limited in the first clamping groove by the inserting block, so that the main cross beam is prevented from falling off, and the reliability of the main cross beam is enhanced; when the lower cover plate is pressed on the bottom surface of the first support, the inserting rods are inserted into the inserting holes of the main cross beam from the bottom through holes, and therefore the fixation of the main cross beam can be further enhanced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partial schematic view of the present invention after the first bracket is hidden;

FIG. 3 is a partial structural view of the present invention highlighting a first leg;

FIG. 4 is a schematic view of the overall structure highlighting the back side of FIG. 1;

FIG. 5 is a partial schematic view showing the driving member according to the present invention.

Reference numerals: 1. a mounting seat; 11. a chute; 12. a first mounting groove; 121. a drive member; 122. a connecting rod; 123. a compression spring; 13. a second mounting groove; 14. a splint; 2. a first bracket; 21. a first clamping groove; 22. perforating; 3. a second bracket; 31. a second clamping groove; 32. a fixing member; 321. rotating the rod; 322. a pressure lever; 33. a yielding groove; 34. a main board; 35. an upper cover plate; 351. a withdrawal groove; 36. a lower cover plate; 361. inserting a rod; 4. a third support; 41. a third clamping groove; 43. a connecting rod; 44. a transverse plate; 5. pressing a plate; 51. inserting a block; 6. a return spring; 7. a buffer spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the steel structure fixture disclosed by the invention comprises a rectangular mounting base 1, a first support 2 horizontally arranged is fixedly mounted on a vertical surface of the mounting base 1, and a first clamping groove 21 with an upward opening is formed in the upper end surface of the first support 2. The mounting base 1 is internally provided with a chute 11 with an opening facing the first support 2, and the chute 11 is internally provided with a second support 3 and a third support 4 in a sliding manner along the vertical direction.

As shown in fig. 1 and 2, the second bracket 3 includes a main plate 34 slidably disposed in the sliding groove 11, an upper cover plate 35 fixedly mounted on a top end of the main plate 34, and a lower cover plate 36 fixedly mounted on a bottom of the main plate 34. The upper cover plate 35, the lower cover plate 36 and the first bracket 2 are parallel to each other and perpendicular to the main board 34. The upper cover plate 35 penetrates through the upper end opening of the sliding chute 11, and the upper end surface of the upper cover plate 35 is provided with a second clamping groove 31 with an upward opening. The bottom center of the upper cover plate 35 is provided with a receding groove 351 having an opening facing downward the first holder 2, and the receding groove 351 is formed along the length direction of the upper cover plate 35. Install the mounting 32 that is long tubular in the groove 351 of moving back, mounting 32 articulates the dwang 321 in the groove 351 of moving back including one end, and the dwang 321 rotates along vertical direction around self articulated shaft. The fixing member 32 further includes a pressing rod 322 screwed to the other end of the rotating rod 321, and the length of the fixing member 32 can be extended and contracted by rotating the pressing rod 322. When the pressing rod 322 is tightened up to a proper height, the fixing member 32 is rotated into the retreat groove 351 around the hinge shaft.

As shown in fig. 2 and 3, the lower cover plate 36 penetrates through the side opening of the sliding chute 11 to the lower side of the first bracket 2, five insertion rods 361 circumferentially arranged in a surrounding manner are fixedly installed on the upper end surface of the lower cover plate 36, and the insertion rods 361 are vertically arranged and face the bottom surface of the first bracket 2. Five through holes 22 which are opposite to the positions of the inserting rods 361 one by one are correspondingly formed in the bottom of the first support 2, and the inserting rods 361 are vertically inserted into the first clamping grooves 21 through the through holes 22.

As shown in fig. 1 and 2, four buffer springs 7 are fixedly installed in the chute 11, and the buffer springs 7 are evenly spaced from each other, and are located at the bottom of the lower cover plate 36. The buffer spring 7 is placed along the vertical direction, the upper end of the buffer spring 7 abuts against the bottom of the lower cover plate 36, and the lower end of the buffer spring 7 abuts against the lower bottom wall of the chute 11. The cushion spring 7 naturally presses the upper end surface of the lower cover plate 36 against the bottom surface of the first bracket 2.

As shown in fig. 1 and 2, a vertical surface of the main plate 34 is provided with a yielding groove 33 with an opening facing the first support 2, the third support 4 comprises three connecting rods 43 which are vertically and uniformly arranged at intervals, the connecting rods 43 are sequentially inserted into the yielding groove 33 from the bottom to the top of the mounting base 1 and the bottom of the second support 3, the connecting rods 43 are slidably disposed in the yielding groove 33, and meanwhile, the connecting rods 43 are slidably disposed in the sliding grooves 11 along the vertical direction. The upper end of the third bracket 4 is fixedly provided with a pressing plate 5 parallel to the first bracket 2 through a connecting rod 43, and the pressing plate 5 penetrates out of the abdicating groove 33 and extends to the position right above the first clamping groove 21. When one end of the fixing member 32 is rotated from the retreat groove 351 to a vertical state and the length of the fixing member 32 is extended, the fixing member 32 can press the pressing plate 5 against the upper end opening of the first clamping groove 21. Five insertion blocks 51 facing the first clamping groove 21 are fixedly mounted on the lower end face of the pressing plate 5, and the five insertion blocks 51 are circumferentially arranged on the lower end face of the pressing plate 5 in a surrounding manner. The connecting rod 43 is sleeved with a return spring 6 positioned in the yielding groove 33, the upper end of the return spring 6 is abutted against the pressing plate 5, and the lower end of the return spring 6 is abutted against the lower side wall of the yielding groove 33.

As shown in fig. 2, the third bracket 4 further includes a horizontal plate 44 fixedly mounted on a connecting rod 43 extending out from the bottom of the mounting base 1, and the horizontal plate 44 is located below the lower cover plate 36 and parallel to the first bracket 2. The upper end surface of the horizontal plate 44 is opened with a third clamping groove 41 which is opened towards the bottom surface of the lower cover plate 36.

As shown in fig. 4 and 5, a first mounting groove 12 along the height direction of the mount base 1 is formed in one side of the mount base 1 away from the first support 2, a driving member 121 is slidably disposed below the mount base 1 along the vertical direction, a vertical waist-shaped hole for penetrating out the upper end of the driving member 121 is formed in the first mounting groove 12, and the upper end of the driving member 121 is slidably disposed in the waist-shaped hole along the vertical direction. The lower end of the driving member 121 penetrates out from the bottom of the mounting seat 1, and the penetrated driving member 121 is fixedly connected with the transverse plate 44. The clamping plates 14 are arranged on a group of inner side walls opposite to the lower end of the first mounting groove 12 in a sliding manner along the horizontal direction, and the two clamping plates 14 symmetrically slide on two sides of the driving part 121. The upper end of the driving member 121 is hinged with a connecting rod 122 facing the two side clamping plates 14, and the other end of the connecting rod 122 is hinged with the opposite clamping plate 14. When the height of the third bracket 4 gradually moves downwards, the connecting rods 122 at the two sides of the driving member 121 drive the clamping plates 14 to gradually move towards the directions close to each other, and the lower cross beam and the upper cross beam simultaneously apply downward pressure to the driving member 121, so that the clamping plates 14 at the two sides of the driving member 121 can tightly clamp the constructional column in the first mounting groove 12, and the mounting base 1 can be more stably and firmly fixed and clamped on the constructional column.

As shown in fig. 4 and 5, the driving member 121 is sleeved with a compression spring 123 located in the mounting seat 1, a lower end of the compression spring 123 abuts against the mounting seat 1, and an upper end of the compression spring 123 abuts against an upper end of the driving member 121. Still seted up on the mount pad 1 with first mounting groove 12 vertically second mounting groove 13, first mounting groove 12 communicates with each other with second mounting groove 13.

The implementation principle of the embodiment is as follows:

when the main beam is installed, the installation base 1 is fixed on the constructional column through a fastening piece. Then, the end of the main beam is inserted into the first bracket 2 through the first clamping groove 21, after the main beam is tightly inserted into the first bracket 2, one end of the fixing member 32 is rotated out of the retraction groove 351 to a vertical state, then the upper beam is fixedly installed in the second clamping groove 31, and then the whole length of the fixing member 32 is gradually extended by rotating the press rod 322, and at this time, the press rod 322 pushes the lower press plate 5 to be pressed on the main beam. As the length of the fixing member 32 continues to extend, the height of the lower cover plate 36 gradually rises under the action of the fixing member 32, and when the lower cover plate 36 rises to be attached and pressed to the bottom surface of the first bracket 2, the second bracket 3 rises to the highest position. Compress tightly the bearing capacity that first support 2 can further be strengthened to lower apron 36 in first support 2 bottom surface, has played the effect of support to first support 2, makes first support 2 more stable firm make the tip of main beam be in the relatively stable environment, has not only strengthened the stability of main beam junction, but also can reduce the harmful effects that external environment produced the main beam. When the upper cross beam is fixed on the second bracket 3, the fixing piece 32 can be applied with pressure again under the action of the gravity of the upper cross beam, so that the fixing piece 32 can more stably and firmly press the pressing plate 5. And finally, the lower cross beam is arranged at the lower end of the third support 4 through the third clamping groove 41, after the lower cross beam is fixed, the pressing plate 5 is further pressed on the main cross beam under the action of the gravity of the lower cross beam again, and the main cross beam simultaneously bears the gravity of the upper cross beam and the lower cross beam, so that the heavy structure of the main cross beam can be greatly enhanced. And the installation of a plurality of crossbeams can be realized through one clamp, the installation is convenient, the crossbeams are mutually compressed and restrained, and the structure is stable.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a steel structure anchor clamps, includes mount pad (1), its characterized in that: a first bracket (2) is arranged on the outer side wall of the mounting seat (1), and a first clamping groove (21) with an upward opening is formed in the first bracket (2); a sliding groove (11) is formed in the mounting seat (1), and a second support (3) and a third support (4) are arranged in the sliding groove (11) in a sliding manner along the vertical direction; the top end of the second support (3) penetrates out of an opening at the upper end of the sliding groove (11), and a second clamping groove (31) with an upward opening is formed in the second support (3) after the second support penetrates out; the lower end of the third support (4) penetrates out of the bottom opening of the sliding groove (11), and a third clamping groove (41) with an upward opening is formed in the third support (4) after the third support penetrates out; a pressing plate (5) penetrating out of the side opening of the sliding groove (11) is arranged at the upper end of the third support (4), and the pressing plate (5) is positioned above the first clamping groove (21); a fixing piece (32) positioned above the pressing plate (5) is arranged on the second bracket (3), the lower end of the fixing piece (32) is abutted against the pressing plate (5), and the pressing plate (5) is tightly pressed on an opening at the upper end of the first clamping groove (21) by the fixing piece (32); the third support (4) comprises a plurality of connecting rods (43) which are arranged vertically and side by side, and the side surface of the second support (3) is provided with an abdicating groove (33) with an opening facing the first support (2); the connecting rod (43) penetrates into the abdicating groove (33) from the bottom of the second support (3), and the connecting rod (43) is arranged in the sliding groove (11) in a sliding mode along the vertical direction; the pressing plate (5) is fixedly arranged at the upper end of the connecting rod (43), and the lower end of the connecting rod (43) penetrates out of the bottom of the mounting seat (1); the third bracket (4) further comprises a transverse plate (44) fixed at the bottom of the connecting rod (43), and the third clamping groove (41) is arranged on the transverse plate (44); the connecting rod (43) is sleeved with a return spring (6) located in the yielding groove (33), the upper end of the return spring (6) is abutted to the pressing plate (5), and the lower end of the return spring (6) is abutted to the lower side wall of the yielding groove (33).

2. The steel structure clamp of claim 1, wherein: the second bracket (3) comprises a main plate (34) arranged in the sliding groove (11) in a sliding manner, an upper cover plate (35) arranged at the top end of the main plate (34) and a lower cover plate (36) arranged at the bottom of the main plate (34); the abdicating groove (33) is arranged on the side surface of the main plate (34), and the second clamping groove (31) is arranged on the upper cover plate (35); the connecting rod (43) extends into the lower cover plate (36) from the bottom of the lower cover plate, and one end of the lower cover plate (36) penetrates out of the sliding groove (11) to be below the first support (2); a buffer spring (7) positioned at the bottom of the lower cover plate (36) is vertically arranged in the sliding groove (11), the upper end of the buffer spring (7) is abutted against the bottom of the lower cover plate (36), and the lower end of the buffer spring (7) is abutted against the sliding groove (11); the lower cover plate (36) in a natural state is tightly propped against the bottom surface of the first bracket (2) under the action of the buffer spring (7).

3. The steel structure clamp of claim 2, wherein: the bottom of the upper cover plate (35) is provided with a retreat groove (351) with an opening facing the pressure plate (5), the fixing piece (32) comprises a rotating rod (321) hinged in the retreat groove (351) and a pressure rod (322) in threaded connection with the rotating rod (321); the rotating rod (321) rotates around a self hinge shaft along the vertical direction.

4. The steel structure clamp of claim 2, wherein: the pressing plate (5) is provided with an inserting block (51) facing the first clamping groove (21), and the inserting block (51) moves along the vertical direction along with the pressing plate (5); a through hole (22) is formed in the bottom of the first support (2), an inserting rod (361) facing the through hole (22) is arranged on the lower cover plate (36), and the upper end of the inserting rod (361) is inserted into the first clamping groove (21) through the through hole (22).

5. The steel structure clamp of claim 1, wherein: one side that mount pad (1) deviates from first support (2) is provided with along self direction of height's first mounting groove (12), still seted up on mount pad (1) with first mounting groove (12) vertically second mounting groove (13), first mounting groove (12) and second mounting groove (13) communicate each other.

6. The steel structure clamp of claim 5, wherein: a driving piece (121) is arranged in the first mounting groove (12) in a sliding manner along the vertical direction, and the lower end of the driving piece (121) penetrates out of the bottom of the mounting seat (1) and is fixed with the third bracket (4); clamping plates (14) are arranged on a group of inner side walls opposite to the first mounting groove (12) in a sliding mode along the horizontal direction, and the two clamping plates (14) are symmetrically arranged on two sides of the driving piece (121); the driving piece (121) is hinged with a connecting rod (122) facing the clamping plate (14), and the other end of the connecting rod (122) is hinged with the clamping plate (14).

7. The steel structure clamp of claim 6, wherein: the cover has compression spring (123) that is located mount pad (1) on driving piece (121), compression spring (123) lower extreme is contradicted with mount pad (1), compression spring (123) upper end is contradicted with driving piece (121) upper end.