CN117738204A - Horizontal internal support of prefabricated concrete structure - Google Patents

Abstract

The invention provides a horizontal internal support of a prefabricated concrete structure, which comprises a plurality of connected beam bodies, wherein the end parts of the two beam bodies at the outermost side are connected with a crown beam through a bearing assembly, the bearing assembly comprises two fixed sliding seats which are oppositely arranged, the two fixed sliding seats are connected through two follow-up sliding seats, an adjusting assembly is detachably arranged between the two follow-up sliding seats, and the adjusting assembly is used for adjusting the positions of the follow-up sliding seats relative to the fixed sliding seats. The invention has compact structure, can greatly improve the efficiency of foundation pit construction, ensures the safety and stability of construction, and has good economic benefit.

Description

Horizontal internal support of prefabricated concrete structure

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a horizontal internal support of a prefabricated concrete structure.

Background

The deep foundation pit is excavated by limiting the environment of a construction site, the deep foundation pit is often supported by using a supporting structure, and the stress characteristics of the supporting type supporting structure are considered, so that the supporting stress states of different positions are different under the action of soil pressure and pit roof load along with further excavation, for example, the first supporting at the top is pulled, so that the first layer supporting is often a cast-in-situ reinforced concrete structure and is cast-in-situ with a crown beam simultaneously to form a whole; the concrete has the defects that the concrete can be excavated downwards after the strength reaches a certain requirement, the concrete is often required to be dismantled after construction is finished, the demolition is often carried out in a destructive manner, time and labor are wasted, and materials cannot be recycled.

Chinese patent document CN 115787661A describes a foundation pit assembly type supporting device and method, but the supporting device cannot be timely adjusted according to the stress change; the chinese patent document CN 113373944A describes a concrete support mounting structure and a mounting and dismounting method, and the problems described above are also present, and there are drawbacks in use, and improvements are required.

Disclosure of Invention

The invention provides a horizontal internal support of a prefabricated concrete structure, which solves the problems that in the process of supporting stress, timely adjustment cannot be carried out according to the needs and repeated use cannot be carried out.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a support in prefabricated assembled concrete structure level, includes the roof beam body of a plurality of connections, and the tip of two roof beam bodies in the outside is passed through and is born subassembly and crown roof beam and be connected, bears the subassembly and includes two fixed slides that set up relatively, and two fixed slides are connected through two follow-up slides, and detachable is equipped with adjusting part between two follow-up slides, and adjusting part is used for adjusting the position of follow-up slide relative fixed slide.

In the preferred scheme, one side of the fixed sliding seat is provided with a baffle, and two sides of the fixed sliding seat are respectively connected with the Liang Tiji crown beam through screws and nuts.

In the preferred scheme, the both sides of fixed slide are equipped with the guide way respectively, and the both sides of follow-up slide are equipped with the sand grip respectively, sand grip and guide way sliding connection still are equipped with first screw hole on the baffle, and first screw hole detachable is equipped with the screw, and fixed slide both sides still are equipped with the buffer table, and follow-up slide bottom is equipped with the third screw hole.

In the preferred scheme, follow-up slide middle part is equipped with the fourth screw hole, and adjusting part includes threaded rod and first hexagonal cover, threaded rod and first hexagonal cover threaded connection, and threaded rod one side is equipped with connector and baffle, and first hexagonal cover one side is equipped with the second hexagonal cover, and second hexagonal cover overall dimension is less than first hexagonal cover, and the fifth screw hole runs through and sets up on first hexagonal cover and second hexagonal cover.

In the preferred scheme, roof beam body both sides detachable is equipped with self-adaptation drive assembly and bottom plate, and self-adaptation drive assembly includes telescopic cylinder, ratchet subassembly and switching-over subassembly, and telescopic cylinder sets up on the roof beam body, and ratchet subassembly includes the power transmission portion, and power transmission portion both sides are equipped with drive division and driving lever respectively, and ratchet subassembly and driving lever are articulated, and switching-over subassembly and drive division are articulated, and the lower part of drive division is connected through sleeve and adjusting part, and the bottom plate both sides are connected through screw and fixed slide and roof beam body respectively.

In the preferred scheme, be equipped with the second screw hole on the fixed slide, one side parallel of bottom plate is equipped with two cardboard, connects between two cardboard and forms the locking groove, and locking groove and fixed slide peg graft, and locking groove one side is equipped with the through-hole, and the screw wears to establish at through-hole and second screw hole, and the opposite side of bottom plate passes through screw and roof beam body sliding connection, and the middle part of bottom plate is equipped with the second waist circular slot, and the second hexagonal cover wears to establish in the second waist circular slot.

In the preferred scheme, the opposite side of bottom plate is connected with the diaphragm through the riser, and one side of the roof beam body is equipped with the mounting groove, and the mounting groove is equipped with pre-buried cover, and the mounting groove has the pre-buried board through the screw connection, and the parallel is equipped with two on the pre-buried board and dodges the groove, dodges the inslot and run through there is first waist circular groove, and the slider slides and sets up in dodging groove and first waist circular inslot, and the screw wears to establish on diaphragm and slider, screw and slider threaded connection.

In the preferred scheme, flexible jar bottom is through jacking jar and roof beam body coupling, be equipped with a plurality of pre-buried cover on the roof beam body, the jacking jar includes base and first ejector pin, first ejector pin inserts and establishes in the base, the base passes through screw and pre-buried cover to be connected, the upper portion of first ejector pin supports has the roof, flexible jar includes cylinder body and second ejector pin, the cylinder body bottom is articulated through screw and roof, it has the keysets to run through on the driving lever, second ejector pin tip is equipped with the bayonet socket, the round pin axle wears to establish in bayonet socket and keysets, still articulated has the backup pad on the roof, it has the third waist circular slot to run through in the backup pad, the screw wears to establish on third waist circular slot and power transmission portion.

In the preferred scheme, the reversing assembly comprises a motor, the motor is fixed through an adapter plate and a force transmission part, a disc is arranged at the bottom of the motor, a reversing plate is arranged at the upper part of a driving part, and the disc is hinged with the reversing plate through two push plates.

In the preferred scheme, the push pedal is close to reversing plate one side and is equipped with fourth waist circular slot, and the both sides of push pedal are articulated with disc and reversing plate respectively, and the driving lever inserts and establishes on fourth waist circular slot and reversing plate, still is equipped with the step on the push pedal, and detachable still is equipped with the camera on the roof beam body, and the camera sets up towards reversing plate one side.

The beneficial effects of the invention are as follows: the in-situ casting concrete internal support is changed into an assembled structure, and the stress state of the concrete internal support is adjusted according to the requirement, so that the concrete internal support is ensured to have enough prestress all the time, and the whole support is firm, safe and reliable;

1) The whole assembly and the tension bearing problem can be simultaneously satisfied;

2) The supporting structure has reliable quality: the prefabricated reinforced concrete inner support is prefabricated in a factory uniformly, and is maintained uniformly, and the concrete pouring quality and the maintenance quality are superior to those of the cast-in-place concrete inner support;

3) The construction efficiency is high: firstly, the existing cast-in-situ supporting structure often needs equal strength, the strength of the prefabricated reinforced concrete inner support reaches 100% of the design strength when leaving the factory, and the equal strength time is saved; secondly, the cast-in-place concrete inner support needs to be subjected to the processes of binding reinforcing steel bars, supporting a mould, pouring concrete and the like, the working procedures are more, the prefabricated reinforced concrete inner support can be directly installed without any post-pouring belt, and the cast-in-place concrete inner support belongs to integral assembly type construction;

4) And (3) reducing the exposure time of the foundation pit: when the foundation pit is excavated, firstly, only the position of the crown beam is excavated, the soil in the middle of the foundation pit is not excavated, the crown beam and the embedded part are constructed, and after the strength of the crown beam meets a certain strength, the soil in the middle of the foundation pit can be excavated; and the foundation pit is divided into layers and sections during excavation, one section is excavated, namely one section is supported, the inner support can bear force after being installed, and the exposure time of the foundation pit is reduced. The technological process perfectly accords with the idea of small section excavation and support along with excavation.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic view of the overall system of the present invention in state one;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a right side schematic view of the present invention;

FIG. 4 is a schematic front view of the present invention;

FIG. 5 is a schematic bottom view of the present invention;

FIG. 6 is a second overall schematic state of the present invention;

FIG. 7 is an overall schematic view state three of the present invention;

FIG. 8 is an overall schematic state four of the present invention;

FIG. 9 is a schematic view of an exploded view of a load bearing assembly of the present invention;

FIG. 10 is a schematic view of the explosive structure of FIG. 1 in a first state;

FIG. 11 is a schematic view of the explosive structure of FIG. 1 in a second state;

FIG. 12 is a schematic view of an exploded view of the adaptive drive assembly of the present invention in state one;

FIG. 13 is a schematic view of an explosion configuration of the adaptive drive assembly of the present invention in state two;

FIG. 14 is a schematic view of the explosive structure of FIG. 1 in a third state;

fig. 15 is a schematic view of the explosive structure of fig. 1 in state four.

In the figure: a beam body 1; embedding a sleeve 101; a pre-buried plate 102; an avoidance groove 103; a first lumbar circular groove 104; a slider 105; a mounting groove 106; a carrier assembly 2; a fixed slider 201; a follower slide 202; a first threaded hole 203; a second threaded hole 204; a guide groove 205; a ridge 206; a shutter 207; a buffer stage 208; a third threaded hole 209; a fourth threaded hole 210; an adjustment assembly 3; a threaded rod 301; a first hexagonal sleeve 302; a second hexagonal sleeve 303; a connector 304; a partition 305; a fifth threaded hole 306; an adaptive drive assembly 4; a bottom plate 5; a clamping plate 501; a locking groove 502; a second lumbar circular groove 503; a riser 504; a cross plate 505; a through hole 506; a camera 6; a screw 7; a nut 8; a jack cylinder 9; a base 901; a top plate 902; a first jack 903; a support plate 904; a third lumbar circular groove 905; a telescopic cylinder 10; a cylinder 1001; a second ejector 1002; a bayonet 1003; a pin 1004; a ratchet assembly 11; a force transmission portion 1101; a driving unit 1102; a reversing plate 1103; a sleeve 1104; a toggle 1105; an adapter plate 1106; a reversing assembly 12; a motor 1201; a disk 1202; a pusher plate 1203; a fourth kidney slot 1204; stage 1205.

Detailed Description

As shown in fig. 1-5, a prefabricated concrete structure horizontal internal support comprises a plurality of connected beam bodies 1, the end parts of two beam bodies 1 at the outermost side are connected with a crown beam through a bearing assembly 2, the bearing assembly 2 comprises two fixed sliding seats 201 which are oppositely arranged, the two fixed sliding seats 201 are connected through two follow-up sliding seats 202, an adjusting assembly 3 is detachably arranged between the two follow-up sliding seats 202, and the adjusting assembly 3 is used for adjusting the positions of the follow-up sliding seats 202 relative to the fixed sliding seats 201. From this structure to make whole ann tear open conveniently, can transport to the construction position through after the mill is prefabricated, then carry out quick construction, during the construction, stable in structure has avoided the defect that needs equal strength and exposure when the job site cast-in-place, can be better deal with the change of environment and weather, guarantee holistic structure safe and reliable.

In a preferred embodiment, as shown in fig. 9, a baffle 207 is provided on one side of the fixed slide 201, and two sides of the fixed slide 201 are respectively connected with the beam body 1 and the crown beam through a screw 7 and a nut 8. From this structure to make the construction high-efficient, effectual, when the roof beam is under construction, install the roof beam lateral wall with buries earlier, then utilize screw 7 and nut 8 to lock roof beam body 1 and roof beam respectively with bearing assembly 2, convenient operation.

In the preferred scheme, the both sides of fixed slide 201 are equipped with guide slot 205 respectively, and the both sides of follower slide 202 are equipped with sand grip 206 respectively, sand grip 206 and guide slot 205 sliding connection still are equipped with first screw hole 203 on the baffle 207, and first screw hole 203 interior detachable is equipped with screw 7, and fixed slide 201 both sides still are equipped with buffer platform 208, and follower slide 202 bottom is equipped with third screw hole 209. With this structure, the engagement effect between the fixed slide 201 and the follow-up slide 202 is good, so that the adjustment assembly 3 is preferably kept in a horizontal state for ensuring the convenience of operation, the participation of constructors is reduced, and the risk that the follow-up slide 202 is mounted is avoided.

In a preferred scheme, a fourth threaded hole 210 is formed in the middle of the follower slide 202, the adjusting component 3 comprises a threaded rod 301 and a first hexagonal sleeve 302, the threaded rod 301 is in threaded connection with the first hexagonal sleeve 302, a connector 304 and a partition plate 305 are arranged on one side of the threaded rod 301, a second hexagonal sleeve 303 is arranged on one side of the first hexagonal sleeve 302, the external dimension of the second hexagonal sleeve 303 is smaller than that of the first hexagonal sleeve 302, and a fifth threaded hole 306 is penetratingly formed in the first hexagonal sleeve 302 and the second hexagonal sleeve 303. From this structure to make can be through the connector 304 quick provide moment of torsion for threaded rod 301, and then adjust the position of threaded rod 301, also changed the distance between two fixed slide 201 promptly, thereby changed the distance between follow-up slide 202, also changed the relative distance between roof beam body 1 and foundation ditch 1 promptly, satisfied construction design requirement, bear the weight of intensity in the scope of design.

In the preferred scheme shown in fig. 6-8, two sides of a beam body 1 are detachably provided with an adaptive driving assembly 4 and a bottom plate 5, the adaptive driving assembly 4 comprises a telescopic cylinder 10, a ratchet assembly 11 and a reversing assembly 12, the telescopic cylinder 10 is arranged on the beam body 1, the ratchet assembly 11 comprises a force transmission part 1101, two sides of the force transmission part 1101 are respectively provided with a driving part 1102 and a deflector rod 1105, the ratchet assembly 11 is hinged with the deflector rod 1105, the reversing assembly 12 is hinged with the driving part 1102, the lower part of the driving part 1102 is connected with the adjusting assembly 3 through a sleeve 1104, and two sides of the bottom plate 5 are respectively connected with a fixed sliding seat 201 and the beam body 1 through screws 7. The strain gauge type pressure sensor is arranged in the guide groove 205 of the fixed sliding seat 201, so that pressure change between the follow-up sliding seat 202 and the beam body 1 can be sensitively reflected, the ratchet assembly 11 is driven to rotate through telescopic action of the telescopic cylinder 10, the position of the threaded rod 301 is changed, the distance between the two fixed sliding seats 201 is changed, the pressure between the follow-up sliding seat 202 and the fixed sliding seat 201 is kept in a proper range, the whole safety and the high efficiency are realized, the whole internal bearing capacity is balanced, the repeated use can be realized, and the service life is prolonged.

In the preferred scheme, be equipped with second screw hole 204 on the fixed slide 201, one side of bottom plate 5 is parallel to be equipped with two cardboard 501, connect between two cardboard 501 and form locking groove 502, locking groove 502 and fixed slide 201 peg graft, locking groove 502 one side is equipped with through-hole 506, screw 7 wears to establish in through-hole 506 and second screw hole 204, the opposite side of bottom plate 5 passes through screw 7 and roof beam body 1 sliding connection, the middle part of bottom plate 5 is equipped with second waist circular slot 503, second hexagonal cover 303 wears to establish in second waist circular slot 503. The second waist round groove 503 is matched with the second hexagonal sleeve 303 in shape, two sides of the second hexagonal sleeve 303 are attached to the side wall of the second waist round groove 503, the second waist round groove 503 inhibits the rotation trend of the second hexagonal sleeve 303, and therefore when the threaded rod 301 rotates, the second hexagonal sleeve 303 only moves in the axial direction without angle change, and the whole use is safe and efficient.

In the preferred scheme, the opposite side of bottom plate 5 is connected with diaphragm 505 through riser 504, and one side of roof beam body 1 is equipped with mounting groove 106, and mounting groove 106 is equipped with pre-buried cover 101, and mounting groove 106 is connected with pre-buried board 102 through screw 7, and the parallel is equipped with two on the pre-buried board 102 and dodges groove 103, dodges the inslot and has run through first waist circular slot 104, and slider 105 slides and sets up in dodging groove 103 and first waist circular slot 104, and screw 7 wears to establish on diaphragm 505 and slider 105, screw 7 and slider 105 threaded connection. With this structure, when the position of the follower slide 202 relative to the fixed slide 201 is changed, the position of the beam body 1 is changed, at this time, since the fixed slide 201 on one side of the bottom plate 5 and the foundation pit side are locked with each other, the position of the fixed slide 201 on the beam body 1 is changed, at this time, the bottom plate 5 is kept moving only in the lateral direction with the beam body 1, the bearing force in the longitudinal direction is not changed, and the moving accuracy is high.

In the preferred scheme shown in fig. 10-15, the bottom of a telescopic cylinder 10 is connected with a beam body 1 through a jacking cylinder 9, a plurality of embedded sleeves 101 are arranged on the beam body 1, the jacking cylinder 9 comprises a base 901 and a first ejector rod 903, the first ejector rod 903 is inserted into the base 901, the base 901 is connected with the embedded sleeves 101 through a screw 7, a top plate 902 is supported on the upper portion of the first ejector rod 903, the telescopic cylinder 10 comprises a cylinder 1001 and a second ejector rod 1002, the bottom of the cylinder 1001 is hinged with the top plate 902 through the screw 7, an adapter plate 1106 penetrates through the stirring rod 1105, a bayonet 1003 is arranged at the end part of the second ejector rod 1002, a pin shaft 1004 penetrates through the bayonet 1003 and the adapter plate 1106, a supporting plate 904 is hinged on the top plate 902, a third waist round groove 905 penetrates through the supporting plate 904, and the screw 7 penetrates through the third waist round groove 905 and the force transmission part 1101. When the movement of the threaded rod 301 is limited, the height of the ratchet assembly 11 can be adjusted according to the jacking cylinder 9, so that the space for adjustment is ensured, the use is convenient, and only the telescopic change of the second ejector rod 1002 of the telescopic cylinder 10 is needed, so that stable torque can be provided for the ratchet assembly 11.

In a preferred embodiment, the reversing assembly 12 comprises a motor 1201, the motor 1201 is fixed by an adapter plate 1106 and a force transmission part 1101, a disc 1202 is arranged at the bottom of the motor 1201, a reversing plate 1103 is arranged at the upper part of the driving part 1102, and the disc 1202 is hinged with the reversing plate 1103 by two pushing plates 1203. From this structure to make can adjust the position of switching-over board 1103 as required, and then guarantee the rotatory convenience to threaded rod 301, motor 1201 is connected with the speed reduction structure, has guaranteed that the switching-over board 1103 is to the steady and stable of both sides removal, and rotates the back in place, and push pedal 1203 carries out the locking of position and angle to the switching-over board 1103, and is whole safe in utilization high-efficient.

In the preferred scheme, a fourth kidney-shaped groove 1204 is arranged on one side of the push plate 1203, which is close to the reversing plate 1103, two sides of the push plate 1203 are respectively hinged with the disc 1202 and the reversing plate 1103, the deflector rod 1105 is inserted into the fourth kidney-shaped groove 1204 and the reversing plate 1103, a stage 1205 is further arranged on the push plate 1203, a camera 6 is further arranged on the beam body 1 in a detachable mode, and the camera 6 is arranged towards one side of the reversing plate 1103. From this structure to make whole convenient to use, camera 6 plays control reversing plate 1103 operating condition's effect, guarantees the safety of use, and the step 1205 on the push pedal 1203 then can guarantee that the space utilization of push pedal 1203 is high, excellent in use effect.

The above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.

Claims (10)

1. A horizontal internal support of a prefabricated concrete structure is characterized in that: the beam body (1) that includes a plurality of connections, the tip of two beam bodies (1) in the outside is connected through bearing assembly (2) and hat roof beam, and bearing assembly (2) are including two fixed slide (201) of relative setting, and two fixed slide (201) are connected through two follow-up slide (202), and detachable is equipped with adjusting part (3) between two follow-up slide (202), and adjusting part (3) are used for adjusting the position of follow-up slide (202) relative fixed slide (201).

2. The prefabricated concrete structure horizontal internal support according to claim 1, wherein: one side of the fixed sliding seat (201) is provided with a baffle plate (207), and two sides of the fixed sliding seat (201) are respectively connected with the beam body (1) and the crown beam through screws (7) and nuts (8).

3. The prefabricated concrete structure horizontal internal support according to claim 2, wherein: guide grooves (205) are respectively arranged on two sides of the fixed sliding seat (201), raised strips (206) are respectively arranged on two sides of the follow-up sliding seat (202), the raised strips (206) are in sliding connection with the guide grooves (205), first threaded holes (203) are further formed in the baffle (207), screws (7) are detachably arranged in the first threaded holes (203), buffer tables (208) are further arranged on two sides of the fixed sliding seat (201), and third threaded holes (209) are formed in the bottoms of the follow-up sliding seat (202).

4. The prefabricated concrete structure horizontal internal support according to claim 1, wherein: the middle part of follow-up slide (202) is equipped with fourth screw hole (210), adjusting part (3) are including threaded rod (301) and first hexagonal cover (302), threaded rod (301) and first hexagonal cover (302) threaded connection, threaded rod (301) one side is equipped with connector (304) and baffle (305), first hexagonal cover (302) one side is equipped with second hexagonal cover (303), second hexagonal cover (303) overall dimension is less than first hexagonal cover (302), fifth screw hole (306) run through the setting on first hexagonal cover (302) and second hexagonal cover (303).

5. The prefabricated concrete structure horizontal internal support according to claim 4, wherein: beam body (1) both sides detachable is equipped with self-adaptation drive assembly (4) and bottom plate (5), self-adaptation drive assembly (4) are including flexible jar (10), ratchet subassembly (11) and switching-over subassembly (12), flexible jar (10) set up on beam body (1), ratchet subassembly (11) are including biography power portion (1101), biography power portion (1101) both sides are equipped with drive portion (1102) and driving lever (1105) respectively, ratchet subassembly (11) are articulated with driving lever (1105), switching-over subassembly (12) are articulated with drive portion (1102), the lower part of drive portion (1102) is connected through sleeve (1104) and adjusting part (3), bottom plate (5) both sides are connected through screw (7) and fixed slide (201) and beam body (1) respectively.

6. The prefabricated concrete structure horizontal internal support according to claim 5, wherein: be equipped with second screw hole (204) on fixed slide (201), one side parallel of bottom plate (5) is equipped with two cardboard (501), connect between two cardboard (501) and form locking groove (502), locking groove (502) are pegged graft with fixed slide (201), locking groove (502) one side is equipped with through-hole (506), screw (7) are worn to establish in through-hole (506) and second screw hole (204), the opposite side of bottom plate (5) is through screw (7) and roof beam body (1) sliding connection, the middle part of bottom plate (5) is equipped with second waist circular slot (503), second hexagonal cover (303) wear to establish in second waist circular slot (503).

7. The prefabricated concrete structure horizontal internal support according to claim 6, wherein: the opposite side of bottom plate (5) is connected with diaphragm (505) through riser (504), one side of roof beam body (1) is equipped with mounting groove (106), mounting groove (106) are equipped with pre-buried cover (101), mounting groove (106) are connected with pre-buried board (102) through screw (7), parallel are equipped with on pre-buried board (102) and dodge groove (103), it has first waist circular groove (104) to dodge in groove (103), slider (105) slip sets up in dodging groove (103) and first waist circular groove (104), screw (7) wear to establish on diaphragm (505) and slider (105), screw (7) and slider (105) threaded connection.

8. The prefabricated concrete structure horizontal internal support according to claim 5, wherein: the telescopic cylinder (10) bottom is connected through jacking cylinder (9) and roof beam body (1), be equipped with a plurality of pre-buried cover (101) on roof beam body (1), jacking cylinder (9) are including base (901) and first ejector pin (903), first ejector pin (903) are inserted and are established in base (901), base (901) are connected through screw (7) and pre-buried cover (101), roof (902) are supported on the upper portion of first ejector pin (903), telescopic cylinder (10) are including cylinder body (1001) and second ejector pin (1002), cylinder body (1001) bottom is articulated through screw (7) and roof (902), run through on ejector pin (1105) have keysets (1106), second ejector pin (1002) tip is equipped with bayonet socket (1003), round pin axle (1004) wear to establish in bayonet socket (1003) and keysets (1106), still articulate backup pad (904) on roof plate (904), it has third waist circular groove (905) to run through on backup pad (904), screw (7) wear to establish on third waist circular groove (905) and power transmission portion (1101).

9. The prefabricated concrete structure horizontal internal support according to claim 5, wherein: the reversing assembly (12) comprises a motor (1201), the motor (1201) is fixed through an adapter plate (1106) and a force transmission part (1101), a disc (1202) is arranged at the bottom of the motor (1201), a reversing plate (1103) is arranged on the upper part of the driving part (1102), and the disc (1202) is hinged with the reversing plate (1103) through two pushing plates (1203).

10. The prefabricated concrete structure horizontal internal support according to claim 9, wherein: the push plate (1203) is close to reversing plate (1103) one side and is equipped with fourth waist circular slot (1204), and the both sides of push plate (1203) are articulated with disc (1202) and reversing plate (1103) respectively, and on fourth waist circular slot (1204) and reversing plate (1103) were inserted to driving lever (1105), still be equipped with step (1205) on push plate (1203), detachably still is equipped with camera (6) on beam body (1), and camera (6) set up towards reversing plate (1103) one side.