Concrete bottom plate form removal device of steel bar truss floor support plate and form removal method of concrete bottom plate form removal device

Abstract

The invention discloses a formwork removal device and method for a concrete bottom plate of a steel bar truss floor support plate, and the formwork removal device comprises two horizontal bases which are arranged on the two opposite sides of a mold of the concrete bottom plate at intervals in the transverse direction; the two H-shaped supporting pieces are vertically arranged, directly face each other and are connected to the tops of the two horizontal bases in the longitudinal direction, and sliding rods are connected between two opposite flange rods of the two H-shaped supporting pieces in the transverse direction; the two mold removing assemblies are connected to the two sliding rods of the two H-shaped supporting pieces in a sliding mode, and the two mold removing assemblies are connected with vertical plates in a height-adjustable mode; the first driving assembly is used for driving the two mold removing assemblies to slide on the two sliding rods in a manner of getting close to each other or getting away from each other; and the two second driving assemblies are used for driving the two vertical plates to adjust the height correspondingly, and the construction efficiency is improved through the formwork removal device.

Description

[0001] This invention relates to the field of building construction technology, and in particular to a demolding device and method for a concrete base slab of a steel truss floor slab. Background Technology

[0002] Steel truss floor decking is a building structural material that combines the advantages of steel trusses and floor decking. This type of floor decking is usually composed of steel trusses and a base slab. The steel trusses, as the main load-bearing structure, provide the rigidity and strength of the floor slab, while the base slab connects and supports the steel trusses and forms the floor plan. Steel truss floor decking has advantages such as light weight, high strength, and fast construction speed, and is widely used in floor structures in modern buildings, especially in projects that require rapid construction and efficient use of space.

[0003] The manufacturing process of steel truss floor decking involves pouring concrete base slabs into the floor decking using specific molds and then connecting the truss reinforcement. However, after the concrete base slab is poured and formed, it is difficult to remove the formed concrete from the specific molds. Disassembly is difficult and the molds are easily damaged, affecting secondary use. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a concrete base plate demolding device and demolding method for reinforced truss floor slabs, so as to separate the concrete base plate cast in the mold from the mold and improve construction efficiency.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is a concrete base slab demolding device for reinforced truss floor slabs, comprising: Two horizontal bases are set at a lateral interval on opposite sides of the mold of the concrete base plate; Two H-shaped support members are vertically arranged and face each other, and are respectively connected longitudinally to the top of the two horizontal bases. A sliding rod is connected laterally between the two opposing flange rods of the two H-shaped support members. Two demolding components are slidably connected between the two sliding rods of the two H-shaped supports, and can move closer or further apart from each other through relative sliding. Each of the two demolding components is height-adjustably connected with a vertical plate, which is used to move down and insert into the gap between the concrete and the mold on opposite sides when the concrete in the mold is not solidified, and to move up after the concrete in the mold is solidified to separate the solidified concrete from the mold. A first driving component is used to drive the relative sliding of the two demolding components; Two second drive components are used to drive the two vertical plates to adjust their height, respectively.

[0006] A further improvement of the concrete slab demolding device for reinforced truss floor decking of the present invention is that each of the demolding components includes: The U-shaped plate is located between the two sliding rods and above the mold; Two movable blocks are respectively connected to the opposite outer sides of the two flanges of the U-shaped plate, and the two movable blocks are slidably sleeved on the two sliding rods; Two limiting plates are respectively connected to the opposite inner sides of the two flange plates of the U-shaped plate; Two lifting rods vertically penetrate the two limiting plates and the web of the U-shaped plate, respectively. The vertical plate is arranged longitudinally on one side of the U-shaped plate and connected to the two lifting rods. The second driving assembly is connected to the two lifting rods and is used to drive the two lifting rods to rise and fall and drive the vertical plate to rise and fall. A connecting rod is arranged longitudinally and connected to the top of the U-shaped plate, and the first drive assembly is connected to the connecting rod.

[0007] A further improvement of the concrete slab demolding device for reinforced truss floor decking of the present invention is that the second driving component includes: A pivot is rotatably connected between the top ends of the two flanges of the U-shaped plate, and the pivot is located directly above the two lifting rods; An elliptical abutment roller is sleeved on the rotating shaft and is used to press down the two lifting rods as the rotating shaft rotates; Two springs are respectively sleeved on the outer periphery of the two lifting rods and located below the two limiting plates. The two ends of the springs are respectively connected to the corresponding lifting rods and the web plates. In the reset state of the springs, the major axis of the elliptical abutment roller is parallel to the web plates, and the elliptical abutment roller is attached to the top of the two lifting rods.

[0008] A further improvement of the concrete base slab demolding device for steel truss floor decking of the present invention is that each of the lifting rods is rotatably connected to a roller at its top for the elliptical abutment roller to abut against, and the rotation axis of the roller is parallel to the rotation axis of the rotating shaft.

[0009] A further improvement of the concrete base plate demolding device for the steel truss floor deck of the present invention is that the web of the U-shaped plate is located at the bottom end of the two flanges of the U-shaped plate, the bottom ends of the two lifting rods penetrate through the web and are connected to a pressure plate for pressing on the top surface of the uncured concrete, and the bottom end of the vertical plate extends downward out of the web of the U-shaped plate and beyond the pressure plate by a certain distance, and the certain distance is equal to the thickness of the concrete in the mold.

[0010] A further improvement of the concrete slab demolding device for reinforced truss floor decking of the present invention is that the first driving component includes: Two first hinge blocks, and two horizontal bases each have a first sliding groove provided in the transverse direction for sliding corresponding to the first hinge block; Two second hinge blocks are located directly above the two first slide grooves and are connected to the outside of the web rods of the two H-shaped supports. Two extension rods, one end of which is connected to the two connecting rods respectively, and the other end of which extends outward in a lateral direction, with the two extension rods located directly above the two first sliding grooves respectively; Two third hinge blocks are respectively connected to the ends of the two extension rods; Two V-shaped rods, with their first ends hinged to two first hinge blocks and their second ends hinged to two third hinge blocks, and their bends hinged to two second hinge blocks. The lengths of the two flanges of the V-shaped rods are adjustable. A driving component is used to drive the two first hinge blocks to slide relatively close or relatively far apart, so as to drive the two V-shaped rods to swing laterally around the corresponding second hinge blocks, thereby driving the two demolding components to slide relatively close or relatively far apart.

[0011] A further improvement of the concrete slab demolding device for reinforced truss floor decking of the present invention is that the driving component includes: A support plate is arranged laterally and connected to one end of the two horizontal bases, and the support plate is horizontally offset from the mold. A two-way hydraulic push rod is connected to the middle of the support plate; Two transmission rods are arranged longitudinally, with one end connected to both ends of the bidirectional hydraulic push rod and the other end connected to the two first hinge blocks.

[0012] A further improvement of the concrete base demolding device for reinforced truss floor decking of the present invention is that two first sliding grooves are opened through each other, and two first hinge blocks extend downward to correspond to the horizontal base and are connected to scrapers. The lengths of the two first sliding grooves satisfy the following: when the two first hinge blocks are located in the first position within the corresponding first sliding groove, the two scrapers are located at the top of the mold and abut against each other; when the two first hinge blocks are located in the second position within the corresponding first sliding groove, the two scrapers are separated from each other and horizontally offset from the mold. The bottom elevation of the scraper is flush with the top surface elevation of the mold, and it is used to move with the movement of the first hinge blocks to scrape off the uneven parts of the concrete top surface within the mold.

[0013] A method for demolding the concrete base slab of a reinforced truss floor slab includes the following steps: Step 1: Provide the concrete base slab demolding device for the above-mentioned steel truss floor deck slab; Step 2: Connect the mold to the ground and pour concrete into the mold; Step 3: When the concrete in the mold has not solidified, the first drive assembly controls the two demolding components to slide relative to each other until the vertical plates of the two demolding components are respectively located above the gap between the concrete and the mold on opposite sides. Step 4: Use two second drive components to control the two vertical plates to move downwards until they are inserted into the corresponding gaps; Step 5: After the concrete in the mold has solidified, the first drive component is used to control the two demolding components to move closer to each other to clamp the solidified concrete. Step 6: Use the two second drive components to control the two vertical plates to move upward until the solidified concrete separates from the mold.

[0014] Compared with the prior art, the advantages of the present invention are: This allows for the separation of the concrete base slab cast inside the mold from the mold without damaging the mold itself, thus improving construction efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural front view of the concrete base slab demolding device for the steel truss floor deck of the present invention.

[0017] Figure 2 This is a schematic diagram of the connection of the H-shaped support component of the concrete base slab demolding device for the steel truss floor deck of the present invention.

[0018] Figure 3 This is a front view of the demolding component of the concrete base slab demolding device for the steel truss floor deck of the present invention.

[0019] Figure 4 This is a detailed drawing of the U-shaped plate structure of the concrete base slab demolding device for the steel truss floor deck of the present invention.

[0020] Figure 5 This is a structural breakdown diagram of the demolding components of the concrete base slab demolding device for the steel truss floor deck of the present invention.

[0021] In the diagram: 1. Horizontal base; 2. H-shaped support; 3. Slide rod; 4. Demolding assembly; 401. U-shaped plate; 402. Moving block; 403. Connecting rod; 404. Vertical plate; 405. Limiting plate; 406. Lifting rod; 407. Spring; 408. Roller; 409. Second slide groove; 410. Two-fold rod; 5. First drive assembly; 501. Support plate; 502. Bidirectional hydraulic push rod; 503. Transmission rod; 504. First hinge block; 505. Second hinge block; 506. V-shaped rod; 507. Extension rod; 508. Third hinge block; 6. Second drive assembly; 601. Rotating shaft; 602. Elliptical anti-roller; 603. Motor; 7. Pressure plate; 8. Vertical rod; 9. Guide rod. Detailed Implementation

[0022] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] The following detailed description of the concrete base slab demolding device and demolding method of the steel truss floor deck of the present invention, with reference to the accompanying drawings and specific embodiments, will be provided in further detail.

[0024] Please see Figures 1-5 As shown, the concrete slab demolding device for the reinforced truss floor deck includes: Two horizontal bases 1 are set at a lateral interval on opposite sides of the mold of the concrete base plate; Two H-shaped support members 2 are vertically arranged and face each other, and are respectively connected longitudinally to the top of the two horizontal bases 1. Slide rods 3 are connected laterally between the two opposite flange rods of the two H-shaped support members 2. Two demolding components 4 are slidably connected between the two sliding rods 3 of the two H-shaped support members 2, and can move closer or further apart from each other through relative sliding. Each of the two demolding components 4 is height-adjustably connected with a vertical plate 404, which is used to move down and insert into the gap between the concrete and the mold on the opposite sides when the concrete in the mold is not solidified, and to move up after the concrete in the mold is solidified to separate the solidified concrete from the mold. The first driving component 5 is used to drive the relative sliding of the two demolding components 4; Two second drive components 6 are used to drive the two vertical plates 404 to adjust their height respectively.

[0025] The aforementioned demolding device facilitates the separation of the cast concrete base slab from the mold without damaging the mold, thereby improving construction efficiency.

[0026] Specifically, the two vertical plates 404 have a frosted layer on their inner sides and a release agent on their outer sides.

[0027] By providing the frosted layer on the opposite inner sides of the two vertical plates 404, the bonding effect between the vertical plates 404 and the solidified concrete is improved after the concrete has solidified. By applying the release agent on the opposite outer sides of the two vertical plates 404, the solidified concrete can be separated from the mold.

[0028] Preferably, each of the demolding components 4 includes: U-shaped plate 401 is located between the two sliding rods 3 and above the mold; Two movable blocks 402 are respectively connected to the opposite outer sides of the two flanges of the U-shaped plate 401, and the two movable blocks 402 are respectively slidably sleeved on the two sliding rods 3; Two limiting plates 405 are respectively connected to the opposite inner sides of the two flange plates of the U-shaped plate 401; Two lifting rods 406 vertically penetrate the web of the two limiting plates 405 and the U-shaped plate 401 respectively. The vertical plate 404 is arranged longitudinally on one side of the U-shaped plate 401 and connected to the two lifting rods 406. The second driving assembly 6 is connected to the two lifting rods 406 and is used to drive the two lifting rods 406 to rise and fall and drive the vertical plate 404 to rise and fall. A connecting rod 403 is arranged longitudinally and connected to the top of the U-shaped plate 401, and the first drive assembly 5 is connected to the connecting rod 403.

[0029] Specifically, the vertical plate 404 is connected to the two lifting rods 406 by two double-fold rods 410. The two flanges of the U-shaped plate 401 are provided with a second sliding groove 409 on the opposite inner side. The two double-fold rods 410 are respectively sleeved on the two lifting rods 406, with one end connected to the vertical plate 404 and the other end slidably connected in the two second sliding grooves 409.

[0030] By setting the two-fold rod 410 in conjunction with the second slide groove 409, it is ensured that the vertical plate 404 can rise and fall with the lifting rod 406, while ensuring the stability of the vertical plate 404 during the rising and falling.

[0031] Specifically, a guide rod 9 is connected to the outer side of the connecting rod 403 in a transverse direction, and a vertical rod 8 is connected to the top of the web rod of the H-shaped support member 2. A guide groove is provided on the top of the vertical rod 8 for the guide rod 9 to slide through.

[0032] By setting the guide rod 9 and the vertical rod 8, the sliding stability of the demolding assembly 4 is improved.

[0033] Preferably, the second drive component 6 includes: A pivot 601 is rotatably connected between the top ends of the two flanges of the U-shaped plate 401, and the pivot 601 is located directly above the two lifting rods 406. An elliptical roller 602 is sleeved on the rotating shaft 601 and is used to press down the two lifting rods 406 as the rotating shaft 601 rotates. Two springs 407 are respectively sleeved on the outer periphery of the two lifting rods 406 and located below the two limiting plates 405. The two ends of the springs 407 are respectively connected to the lifting rods 406 and the web plate. In the reset state of the springs 407, the major axis of the elliptical roller 602 is parallel to the web plate, and the elliptical roller 602 is attached to the top of the two lifting rods 406.

[0034] Specifically, the elliptical roller 602 has a first state and a second state. In the first state, the major axis of the elliptical roller 602 is parallel to the web plate, and in the second state, the minor axis of the elliptical roller 602 is parallel to the web plate. When the elliptical roller 602 rotates with the rotating shaft 601 and rotates from the first state to the second state, the elliptical roller 602 will compress the spring 407 and push the lifting rod 406 downward. When the elliptical roller 602 rotates with the rotating shaft 601 and rotates from the second state to the first state, the spring 407 will reset and drive the lifting rod 406 to move upward.

[0035] Specifically, a motor 603 is connected to the top of the movable block 402 on one side, and the motor shaft of the motor 603 is coaxially connected to the rotating shaft 601.

[0036] The motor 603 is configured to drive the rotating shaft 601 to rotate.

[0037] Preferably, each of the lifting rods 406 is rotatably connected to a roller 408 at its top end, which is then abutted by the elliptical abutment roller 602. The rotation axis of the roller 408 is parallel to the rotation axis of the rotating shaft 601.

[0038] By setting the roller 408, the pushing force of the elliptical abutment roller 602 can be converted into downward pressure, avoiding the influence of the horizontal component force on the lifting rod 406.

[0039] Preferably, the web of the U-shaped plate 401 is located at the bottom end of the two flanges of the U-shaped plate 401, the bottom ends of the two lifting rods 406 pass through the web and are connected to the pressure plate 7, which is used to press on the top surface of the uncured concrete. The bottom end of the vertical plate 404 extends downward from the web of the U-shaped plate 401 and exceeds the pressure plate 7 by a certain distance, and the certain distance is equal to the thickness of the concrete in the mold.

[0040] The pressure plate 7 is used to press against the surface of the concrete when the concrete in the mold has not yet solidified. After the concrete in the mold has solidified, the pressure plate 7 is bonded to the concrete so that the solidified concrete can be pulled upwards to separate it from the mold.

[0041] Preferably, the first drive component 5 includes: Two first hinge blocks 504, and two horizontal bases 1 are provided with first sliding grooves in the transverse direction for sliding corresponding to the first hinge block 504. Two second hinge blocks 505 are located directly above the two first sliding grooves and connected to the outside of the web rods of the two H-shaped support members 2; Two extension rods 507, one end of which is connected to the two connecting rods 403 respectively, and the other end extends outward in a lateral direction. The two extension rods 507 are located directly above the two first sliding grooves respectively. Two third hinge blocks 508 are respectively connected to the ends of the two extension rods 507; Two V-shaped rods 506, with their first ends hinged to the two first hinge blocks 504 respectively, their second ends hinged to the two third hinge blocks 508 respectively, and their folding angles hinged to the two second hinge blocks 505 respectively. The lengths of the two flange rods of the V-shaped rods 506 are adjustable. A driving component is used to drive the two first hinge blocks 504 to slide relatively close or relatively far apart, so as to drive the two V-shaped rods 506 to swing laterally around the corresponding second hinge block 505, thereby driving the two demolding components 4 to slide relatively close or relatively far apart.

[0042] By setting the driving component to drive the two first hinge blocks 504 to move away from each other, the two V-shaped rods 506 adaptably extend and retract, and their first ends move away from each other, and swing around the corresponding second hinge block 505, thereby bringing the second ends of the two V-shaped rods 506 closer to each other.

[0043] Preferably, the drive includes: A support plate 501 is arranged laterally and connected to one end of the two horizontal bases 1. The support plate 501 is horizontally offset from the mold. A bidirectional hydraulic push rod 502 is connected to the middle of the support plate 501; Two transmission rods 503 are arranged longitudinally, with one end connected to both ends of the bidirectional hydraulic push rod 502 and the other end connected to the two first hinge blocks 504 respectively.

[0044] Specifically, a third sliding groove is provided on the support plate 501 along the axial direction, and the transmission rod 503 is slidably connected in both the third sliding groove and the first sliding groove.

[0045] By simultaneously sliding the transmission rod 503 to both the first and third slide grooves, the movement stability of the transmission rod 503 is ensured.

[0046] Preferably, the two first sluices are connected, and the two first hinge blocks 504 extend downward to correspond to the horizontal base 1 and are connected to scrapers. The lengths of the two first sluices satisfy the following: when the two first hinge blocks 504 are in the first position corresponding to the first sluice, the two scrapers are located at the top of the mold and abut against each other; when the two first hinge blocks 504 are in the second position corresponding to the first sluice, the two scrapers are separated from each other and horizontally offset from the mold. The bottom elevation of the scraper is flush with the top surface elevation of the mold, and it is used to move with the movement of the first hinge blocks 504 to scrape off the uneven parts of the concrete top surface in the mold.

[0047] The practicality is improved by incorporating a scraper to remove excess concrete from the top of the mold.

[0048] A method for demolding the concrete base slab of a reinforced truss floor slab includes the following steps: Step 1: Provide the concrete base slab demolding device for the above-mentioned steel truss floor deck slab; Step 2: Connect the mold to the ground and pour concrete into the mold; Step 3: Before the concrete in the mold has solidified, the first drive component 5 controls the two demolding components 4 to slide relative to each other until the vertical plates 404 of the two demolding components 4 are respectively located above the gap between the concrete and the mold on the opposite sides. Step 4: Use the two second drive components 6 to control the two vertical plates 404 to move downwards until they are inserted into the corresponding gaps; Step 5: After the concrete in the mold has solidified, the first drive component 5 is used to control the two demolding components 4 to move closer to each other to clamp the solidified concrete. Step 6: Use the two second drive components 6 to control the two vertical plates 404 to move upward until the solidified concrete separates from the mold.

[0049] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A concrete bottom plate stripping device of a steel bar truss floor support plate, characterized in that, The utility model relates to a concrete formwork stripping device and belongs to the field of concrete formwork stripping. It comprises: two horizontal bases arranged in transverse direction on opposite sides of a mold of a concrete bottom plate; two H-shaped supports arranged in vertical direction and opposite to each other, and connected in longitudinal direction to the top of the two horizontal bases respectively, and a slide rod is connected between the two opposite flange bars of the two H-shaped supports in transverse direction; two formwork stripping assemblies, each of which is connected in sliding manner between the two slide rods of the two H-shaped supports, and can move closer to or farther away from each other by relative sliding, and each of the two formwork stripping assemblies is connected in height-adjustable manner to a vertical plate, which is used to move downward and insert into the gap between the mold and the opposite sides of the concrete in the mold when the concrete in the mold is not solidified, and move upward to separate the solidified concrete from the mold when the concrete in the mold is solidified; a first driving assembly for driving the relative sliding of the two formwork stripping assemblies; 2. The form stripping device for a concrete deck of a steel trussed floor panel according to claim 1, wherein two second driving assemblies for driving the height adjustment of the two vertical plates respectively. Each of the formwork stripping assemblies comprises: a U-shaped plate located between the two slide rods and above the mold; two moving blocks connected to the opposite outer sides of the two flange plates of the U-shaped plate respectively, and each of the two moving blocks is slidably sleeved on a slide rod; two limiting plates connected to the opposite inner sides of the two flange plates of the U-shaped plate respectively; two lifting rods vertically penetrating through the two limiting plates and the web plate of the U-shaped plate respectively, the vertical plate is arranged in longitudinal direction on one side of the U-shaped plate and connected to the two lifting rods, the second driving assembly is connected to the two lifting rods for driving the lifting of the two lifting rods and the vertical plate; 3. The form stripping device for a concrete deck of a steel trussed floor panel as claimed in claim 2, wherein, a connecting rod arranged in longitudinal direction and connected to the top of the U-shaped plate, and the first driving assembly is connected to the connecting rod. The second driving assembly comprises: a rotating shaft rotatably connected between the top ends of the two flange plates of the U-shaped plate, and the rotating shaft is located directly above the two lifting rods; an elliptical pressing roller sleeved on the rotating shaft for pressing down the two lifting rods with the rotation of the rotating shaft; 4. The form stripping device for a concrete deck of a steel trussed floor panel as claimed in claim 3, wherein, two springs sleeved on the outer periphery of the two lifting rods and located below the two limiting plates, and the two ends of each spring are connected to the corresponding lifting rod and the web plate, in the reset state of the spring, the major axis of the elliptical pressing roller is parallel to the web plate, and the elliptical pressing roller is attached to the top end of the two lifting rods.

5. The form stripping device for a concrete deck of a steel trussed floor panel as claimed in claim 2, wherein, The top end of each lifting rod is rotatably connected to a roller for pressing by the elliptical pressing roller, and the rotation axis of the roller is parallel to the rotation axis of the rotating shaft.

6. The form stripping device for a concrete deck of a steel trussed floor panel as claimed in claim 2, wherein The web plate of the U-shaped plate is located at the bottom end of the two flange plates of the U-shaped plate, the bottom end of the two lifting rods penetrates through the web plate and is connected to a pressing plate for pressing on the top surface of the un-solidified concrete, the bottom end of the vertical plate extends below the web plate of the U-shaped plate and beyond the pressing plate by a certain distance, and the certain distance is equal to the thickness of the concrete in the mold. The first driving assembly comprises: two first hinge blocks, and a first sliding groove is formed on each of the two horizontal bases in transverse direction for sliding of the corresponding first hinge block; Two second hinge blocks are located above the two first sliding grooves and are connected to the outer sides of the web of the two H-shaped support members; Two extension rods are connected to the two connecting rods at one end and extend outward in opposite directions in the transverse direction at the other end, and the two extension rods are located above the two first sliding grooves; Two third hinge blocks are connected to the ends of the two extension rods; Two V-shaped rods are hingedly connected to the two first hinge blocks at the first ends, are hingedly connected to the two third hinge blocks at the second ends, and are hingedly connected to the two second hinge blocks at the folded corners, and the two flange rods of the V-shaped rods are adjustable in length; A driving member is used to drive the two first hinge blocks to slide towards or away from each other, so as to drive the two V-shaped rods to swing around the corresponding second hinge blocks in the transverse direction, and then drive the two stripping assemblies to slide towards or away from each other.

7. The form stripping device for a concrete deck of a steel trussed floor panel according to claim 6, wherein The driving member comprises: A support plate is arranged in the transverse direction and is connected to one end of the two horizontal bases, and the support plate is arranged horizontally offset from the mold; A bidirectional hydraulic push rod is connected to the middle of the support plate; Two transmission rods are arranged in the longitudinal direction and are connected to the two ends of the bidirectional hydraulic push rod at one end and are connected to the two first hinge blocks at the other end.

8. The form stripping device for a concrete deck of a steel trussed floor panel as claimed in claim 6, wherein, The two first sliding grooves are through openings, the two first hinge blocks extend downward from the corresponding horizontal bases and are connected with scrapers, and the lengths of the two first sliding grooves satisfy that when the two first hinge blocks are located at a first position in the corresponding first sliding groove, the two scrapers are located at the top of the mold and abut against each other, and when the two first hinge blocks are located at a second position in the corresponding first sliding groove, the two scrapers are separated from each other and are horizontally offset from the mold, the bottom elevation of the scraper is flush with the top surface elevation of the mold, and the scraper moves with the movement of the first hinge block to remove the uneven part of the top surface of the concrete in the mold.

9. A method of stripping a concrete bottom slab of a steel bar truss floor deck, characterized by, The method comprises the following steps: Step 1: providing a concrete bottom plate stripping device for a steel truss floor slab as claimed in claim 1; Step 2: connecting a mold to the ground and pouring concrete into the mold; Step 3: when the concrete in the mold has not solidified, controlling the relative sliding of the two stripping assemblies by using the first driving assembly until the vertical plates of the two stripping assemblies are located above the gaps between the concrete and the mold on the opposite sides, respectively; Step 4: controlling the downward movement of the two vertical plates by using the two second driving assemblies, respectively, until they are inserted into the corresponding gaps, respectively; Step 5: after the concrete in the mold has solidified, controlling the further relative approach of the two stripping assemblies by using the first driving assembly to clamp the solidified concrete; Step 6: controlling the upward movement of the two vertical plates by using the two second driving assemblies, respectively, until the solidified concrete is separated from the mold.

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