Supporting truss for steel structure formwork

Abstract

The application discloses a support truss for a steel structure formwork, which comprises a truss body, support mechanisms arranged at both ends of the truss body, upper sleeves, lower sleeves and middle rod pieces, upper sleeves and lower sleeves slidably connected to both ends of the middle rod piece, a top plate arranged at the upper end of the upper sleeve, a base plate arranged at the lower end of the lower sleeve, ear plates arranged on the side walls of the upper sleeve and the lower sleeve, inclined rods hingedly connected to the ear plates, end portions of upper and lower inclined rods connected through U-shaped connecting plates, adjusting screws penetrating through the U-shaped connecting plates, nut heads arranged at one end of the adjusting screws, the other end of the adjusting screws penetrating through the middle rod piece, lock nuts sleeved on the adjusting screws, and a supporting plate arranged on the side wall of the upper sleeve and supporting the truss body. Efficient electric wrenches can be adopted, and electric adjustment of the support mechanisms can be realized through cooperation of the electric wrenches and the nut heads at the end portions of the adjusting screws, so that work efficiency and construction safety are improved.

Description

Technical Field

[0001] This invention relates to the field of building equipment technology, specifically to a support truss for steel structure formwork. Background Technology

[0002] In the construction of prefabricated steel structure building floor slabs, composite floor slabs or steel truss floor decks are generally used as both formwork and load-bearing materials. However, these materials often require close spacing between secondary beams, inevitably leading to a large amount of steel used during construction. To reduce steel consumption and increase the spacing between secondary beams for a more rational spatial division, temporary vertical supports can be added under the floor deck to prevent excessive sagging and safety risks. To provide more construction space and reduce or eliminate the need for vertical supports during prefabricated floor slab construction, horizontal trusses or high-load-bearing, detachable steel beams can be installed under the floor slab, with both ends of the trusses or beams supported by a support mechanism.

[0003] Patent CN201671329U discloses a truss end connection device. The support height of the device can be manually adjusted. However, it cannot be adjusted by electric wrench during construction. The height adjustment needs to be manually adjusted by turning the adjusting nut with a wrench. This is not conducive to the operation and force exertion of workers at high altitudes, so there are certain risks during construction. Summary of the Invention

[0004] This invention addresses the aforementioned shortcomings of existing technologies by providing a support truss for steel structure formwork. When adjusting the height, it can be done using a manual wrench or a high-efficiency electric wrench. The electric wrench, in conjunction with the nut head at the end of the adjusting screw, enables electric adjustment of the support mechanism, improving work efficiency and construction safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A supporting truss for steel structure formwork includes a truss body with supporting mechanisms at both ends. Each supporting mechanism includes an upper sleeve, a lower sleeve, and a central member. The upper and lower sleeves are slidably connected to both ends of the central member. The upper sleeve has a top plate at its upper end and a pad at its lower end. Both the upper and lower sleeves have ear plates on their side walls. Diagonal rods are hinged to the ear plates. The ends of the upper and lower diagonal rods are connected by a U-shaped connecting plate. An adjusting screw passes through the U-shaped connecting plate. One end of the adjusting screw has a nut head, and the other end passes through the central member. A locking nut is fitted on the adjusting screw. A support plate for supporting the truss body is provided on the side wall of the upper sleeve.

[0007] Preferably, the truss body includes an upper chord and a lower chord. The upper chords are connected by upper lap joints, and the lower chords are connected by lower lap joints. The upper chords and upper lap joints, and the lower chords and lower lap joints are connected by bolts or pins. The upper chords and lower chords are connected by web members. The side walls of the upper chords, upper lap joints, lower chords, and lower lap joints are all provided with first connection holes for connecting with web members.

[0008] Preferably, the upper end of the upper chord is fitted with a U-shaped washer, and the upper end of the U-shaped washer is flush with the upper end of the upper connecting rod.

[0009] Preferably, one end of the pin is provided with a pin head, and a spring connected to the pin head is fitted on the pin. The other end of the pin is provided with a receiving hole on its side wall. A fixing rod is provided in the receiving hole. Both ends of the fixing rod are connected to elastic rods. The end of the elastic rod away from the fixing rod is located outside the receiving hole. The end of the elastic rod away from the fixing rod is connected to a stop rod, and the stop rod cooperates with the receiving hole.

[0010] Preferably, the truss body includes a crossbeam, the two ends of which are connected to a support mechanism. The side wall of the crossbeam is provided with second connecting holes evenly. A steel cable is connected between the second connecting holes at both ends of the crossbeam. The ends of the steel cable are fixed by a single locking clamp. A strut assembly for supporting the steel cable is connected to the crossbeam.

[0011] Preferably, the strut assembly includes a support screw, a rotating block in the middle of the support screw, an upper support cylinder and a lower support cylinder respectively fitted at both ends of the support screw, a positioning nut for fixing the upper and lower support cylinders fitted on the support screw, the upper support cylinder being connected to the crossbeam, a clamp being provided on the side wall of the upper support cylinder, the clamp being connected to the crossbeam through a support plate, and a support block for supporting steel cables being provided at the lower end of the lower support cylinder.

[0012] Preferably, the bottom of the support block is provided with a rope groove that cooperates with the steel cable, the outer side of the support block is fitted with a rope loop for fixing the steel cable, and the upper end of the support block is provided with an insert that connects to the lower support cylinder.

[0013] Preferably, the strut assembly includes a bottom pull plate, both ends of which are connected to the crossbeam via diagonal struts. A tensioning screw passes through the bottom pull plate, and the upper end of the tensioning screw is provided with a hook for pulling a steel cable. The steel cable passes around the bottom of the diagonal strut and through a second connecting hole to connect with the hook. An adjusting nut is fitted on the tensioning screw, and the adjusting nut is located at the lower end of the bottom pull plate.

[0014] Preferably, the single locking clamp includes a clamping plate, a positioning plate is provided on the clamping plate, a positioning groove for fixing the steel cable is provided on the positioning plate, a U-shaped pressure ring is connected to the clamping plate, and tension nuts are provided at both ends of the U-shaped pressure ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When adjusting the height, the present invention can be adjusted using a manual wrench or a high-efficiency electric wrench. The electric wrench can be used in conjunction with the nut head at the end of the adjusting screw to achieve electric adjustment of the support mechanism, thereby improving work efficiency and construction safety.

[0017] 2. This invention provides a quick-assembly truss structure, which allows the truss length to be adjusted according to usage requirements. The connection angle between the web members and the upper and lower chords can be changed to adjust the truss height according to requirements. The installation and adjustment are simple and convenient, which can speed up the installation and disassembly process, shorten the construction period, and facilitate storage and transportation after disassembly.

[0018] 3. This invention uses beams and steel cables to form a simple and easy-to-assemble truss structure. It combines the advantages of high bending stiffness of beams and high tensile strength of flexible steel cables, making the interconnected components a truss structure with overall rigidity. The truss structure is relatively lightweight, with high overall rigidity and shape stability, and can span large spaces. It saves steel usage, enables rapid assembly, meets the construction support requirements of steel truss floor slabs, saves costs, and is economical and practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0020] Figure 2 This is a structural diagram of the supporting mechanism;

[0021] Figure 3 Schematic diagram of the truss structure Figure 1 ;

[0022] Figure 4 This is a structural diagram of the pin;

[0023] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0024] Figure 6 Schematic diagram of the strut assembly Figure 1 ;

[0025] Figure 7 This is a schematic diagram of the support block structure;

[0026] Figure 8 This is a schematic diagram of a single locking clip.

[0027] Figure 9 This is a schematic diagram of the structure of Embodiment 3 of the present invention.

[0028] In the diagram: 1-Support mechanism; 101-Plate; 102-Lower sleeve; 103-Middle member; 104-Adjusting screw; 105-Locking nut; 106-Support plate; 107-Top plate; 108-Upper sleeve; 109-Diagonal member; 110-U-shaped connecting plate; 111-Nut head; 112-Ear plate; 2-Quick-assembly truss body; 201-Upper chord; 202-U-shaped washer; 203-Upper lap joint; 204-Web member; 205-Lower chord; 206-Lower lap joint; 207-First connecting hole; 3-Pin; 301-Pin head; 302-Spring; 303-Receiving hole; 304-Fixing rod; 305 - Elastic rod; 306- Stop bar; 4- Crossbeam; 401- Second connecting hole; 5- Support rod assembly; 501- Upper support cylinder; 502- Support plate; 503- Clamp; 504- Positioning nut; 505- Support screw; 506- Rotating block; 507- Lower support cylinder; 508- Support block; 509- Rope binding ring; 510- Rope groove; 511- Insert cylinder; 512- Diagonal support rod; 513- Hook ring; 514- Tensioning screw; 515- Bottom pull plate; 516- Adjusting nut; 6- Steel cable; 7- Single lock clamp; 701- Clamping plate; 702- Positioning plate; 703- Positioning groove; 704- U-shaped pressure ring; 705- Tensioning nut. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] A support truss for steel structure formwork includes a truss body, with support mechanisms 1 at both ends of the truss body, such as... Figure 2 As shown, the support mechanism 1 includes an upper sleeve 108, a lower sleeve 102, and a middle rod 103. The upper sleeve 108 and the lower sleeve 102 are slidably connected to both ends of the middle rod 103, respectively. The upper end of the upper sleeve 108 is provided with a top plate 107, and the lower end of the lower sleeve 102 is provided with a pad plate 101. The side walls of the upper sleeve 108 and the lower sleeve 102 are provided with ear plates 112. The ear plates 112 are hinged with diagonal rods 109. The ends of the upper and lower diagonal rods 109 are connected by a U-shaped connecting plate 110. An adjusting screw 104 passes through the U-shaped connecting plate 110. One end of the adjusting screw 104 is provided with a nut head 111, and the other end of the adjusting screw 104 passes through the middle rod 103. A locking nut 105 is fitted on the adjusting screw 104. The side wall of the upper sleeve 108 is provided with a support plate 106 for supporting the truss body.

[0031] The overall structure is adjusted vertically by moving the adjusting screw 104 with a wrench, and the lateral diagonal rod 109 changes the included angle, thus forming a support that can be adjusted within a certain range. The structure is simple in construction, easy to use, and reusable. The adjustment tool can be a high-efficiency electric wrench or a manual wrench. Electric adjustment can be achieved by cooperating the electric wrench with the nut head 111 at the end of the adjusting screw 104, which improves work efficiency and construction safety.

[0032] Example 1,

[0033] like Figure 1 , 3 As shown, in this embodiment, a quick-assembly truss body 2 is adopted. The truss body includes an upper chord 201 and a lower chord 205. The upper chords 201 are connected by upper overlapping rods 203, and the lower chords 205 are connected by lower overlapping rods 206. The upper chords 201 and upper overlapping rods 203, and the lower chords 205 and lower overlapping rods 206 are connected by bolts or pins 3. The upper chords 201 and lower chords 205 are connected by a web. The rod 204 is connected by U-shaped steel, with the upper chord 201, upper lap joint 203, lower chord 205, and lower lap joint 206 all being U-shaped steel. The side walls of the upper chord 201, upper lap joint 203, lower chord 205, and lower lap joint 206 are all provided with first connecting holes 207 for connecting with the web member 204. The width of the upper lap joint 203 is greater than that of the upper chord 201, and the width of the lower lap joint 206 is greater than that of the lower chord 205, thus achieving the lap joint.

[0034] Since the upper chord 201 is formed by lap joint, a U-shaped gasket 202 needs to be fitted on the upper end of the upper chord 201. The upper end of the U-shaped gasket 202 is flush with the upper end of the upper lap joint 203 to meet the horizontal support requirements of the truss floor deck.

[0035] Assembly is achieved using bolts or pins, reducing the number of parts, simplifying installation, and providing high overall rigidity to meet the construction support requirements of steel truss floor slabs. This increases versatility and saves costs.

[0036] During construction, the truss length can be adjusted according to usage requirements, and the truss height can be adjusted by changing the connection angle between the web members 204 and the upper and lower chords 205. Installation and adjustment are simple and convenient, which can speed up installation and dismantling, shorten the construction period, and facilitate storage and transportation after dismantling.

[0037] like Figure 4As shown, one end of the pin 3 is provided with a pin head 301, and a spring 302 connected to the pin head 301 is sleeved on the pin 3. The other end of the pin 3 is provided with a receiving hole 303 on its side wall. A fixing rod 304 is provided in the receiving hole 303. Both ends of the fixing rod 304 are connected to elastic rods 305. The end of the elastic rod 305 away from the fixing rod 304 is located outside the receiving hole 303. The end of the elastic rod 305 away from the fixing rod 304 is connected to a stop rod 306. The stop rod 306 cooperates with the receiving hole 303.

[0038] The pin 3, through the cooperation between the spring 302 and the elastic rod 305, can achieve self-locking, ensuring the stability and reliability of the connection.

[0039] Example 2,

[0040] like Figure 5 As shown, a tensioned truss structure is adopted, mainly comprising a crossbeam 4. Both ends of the crossbeam 4 are connected to a support mechanism 1. Second connection holes 401 are evenly distributed on the sidewalls of the crossbeam 4. Steel cables 6 are connected between the second connection holes 401 at both ends of the crossbeam 4. The ends of the steel cables 6 are fixed by single locking clips 7. Support strut assemblies 5 for supporting the steel cables 6 are connected to the crossbeam 4. This structure is lightweight and can span large spaces, thus overcoming the shortcomings of existing traditional load-bearing trusses, such as high steel consumption, uneconomical and environmentally unfriendly practices, and slow installation speed.

[0041] By combining the advantages of high bending stiffness of beam 4 and high tensile strength of flexible components, and by applying pre-tension to flexible steel cables 6, the interconnected components become a structure with overall stiffness. The structure is relatively lightweight, with high overall stiffness and shape stability, and can span a large space, saving steel consumption, enabling rapid assembly, meeting the construction support requirements of steel truss floor slabs, saving costs, and being economical and practical.

[0042] After the truss is assembled, it can be installed and fixed in the designated position. By adjusting the magnitude of the pre-applied stress on the steel cable 6, the overall structure can have appropriate rigidity to meet the usage requirements. The installation and adjustment are simpler and more convenient, which can speed up the installation and dismantling speed and shorten the construction period.

[0043] like Figure 6 As shown, the strut assembly 5 includes a support screw 505, a rotating block 506 in the middle of the support screw 505, an upper support cylinder 501 and a lower support cylinder 507 respectively fitted at both ends of the support screw 505, a positioning nut 504 for fixing the upper support cylinder 501 and the lower support cylinder 507 fitted on the support screw 505, the upper support cylinder 501 is connected to the crossbeam 4, a clamp 503 is provided on the side wall of the upper support cylinder 501, the clamp 503 is connected to the crossbeam 4 through a support plate 502, and a support block 508 for supporting the steel cable 6 is provided at the lower end of the lower support cylinder 507.

[0044] like Figure 7As shown, the bottom of the support block 508 is provided with a rope groove 510 that cooperates with the steel cable 6, the outer side of the support block 508 is fitted with a rope binding ring 509 for fixing the steel cable 6, and the upper end of the support block 508 is provided with an insert 511 that connects to the lower support cylinder 507.

[0045] With its light weight, it can span large spaces, thus overcoming the shortcomings of existing traditional load-bearing trusses, such as large steel consumption, uneconomical and environmentally unfriendly construction, difficult installation, complicated installation procedures, and slow installation speed. It enables rapid assembly, meets the construction support requirements of steel truss floor slabs, saves costs, and is economical and practical.

[0046] After both ends of the steel cable 6 pass through the second connecting hole 401, the ends of the steel cable 6 are fixed to the rope body of the steel cable 6 by a single locking clip 7, as shown. Figure 8 As shown, the single locking clamp 7 includes a clamping plate 701, a positioning plate 702 on the clamping plate 701, a positioning groove 703 for fixing the steel cable 6 on the positioning plate 702, and a U-shaped pressure ring 704 connected to the clamping plate 701. The two ends of the U-shaped pressure ring 704 are provided with tensioning nuts 705.

[0047] The end of the steel cable 6 and the rope body are located in the U-shaped pressure ring 704 and the positioning groove 703. By rotating the tension nut 705, the U-shaped pressure ring 704 presses and fixes the steel cables 6 together.

[0048] Example 3,

[0049] The difference between this embodiment and embodiment two lies in the strut assembly 5, which uses a different strut assembly 5 to support the steel cable 6.

[0050] like Figure 9 As shown, the strut assembly 5 includes a bottom pull plate 515. The two ends of the bottom pull plate 515 are connected to the crossbeam 4 through diagonal struts 512. A tensioning screw 514 passes through the bottom pull plate 515. The upper end of the tensioning screw 514 is provided with a hook 513 for pulling the steel cable 6. An adjusting nut 516 is fitted on the tensioning screw 514. The adjusting nut 516 is located at the lower end of the bottom pull plate 515.

[0051] In this embodiment, similar to Embodiment 2, a single steel cable 6 is used. One end of the steel cable 6 passes around the second connecting hole 401 at the end of the crossbeam 4 and is fixed by a single locking clip 7. The steel cable 6 passes around the bottom of a diagonal brace 512, then through a second connecting hole 401 in the middle of the crossbeam 4, a hook 513, another second connecting hole 401 in the middle of the crossbeam 4, passes around the bottom of another diagonal brace 512, and finally passes through the second connecting hole 401 at the other end of the crossbeam 4 and is fixed by a single locking clip 7. By rotating the adjusting nut 516 and pulling the tensioning screw 514, the steel cable 6 can be tightened. The high bending stiffness of the crossbeam 4 and the high tensile strength of the flexible components are utilized to make the connected truss structure a structure with overall rigidity, meeting the support requirements.

[0052] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A support truss for steel structure formwork, comprising a truss body, wherein support mechanisms are provided at both ends of the truss body, characterized in that: The support mechanism includes an upper sleeve, a lower sleeve, and a middle member. The upper and lower sleeves are slidably connected to both ends of the middle member. The upper sleeve has a top plate at its upper end and a pad at its lower end. Both the upper and lower sleeves have ear plates on their side walls. Diagonal rods are hinged to the ear plates. The ends of the upper and lower diagonal rods are connected by a U-shaped connecting plate. An adjusting screw passes through the U-shaped connecting plate. One end of the adjusting screw has a nut head, and the other end passes through the middle member. A locking nut is fitted on the adjusting screw. A support plate for supporting the truss body is provided on the side wall of the upper sleeve. The truss structure includes an upper chord and a lower chord. The upper chords are connected by upper lap joints, and the lower chords are connected by lower lap joints. The upper chords and upper lap joints, and the lower chords and lower lap joints are connected by bolts or pins. The upper and lower chords are connected by web members. The side walls of the upper chords, upper lap joints, lower chords, and lower lap joints are all provided with first connection holes for connection with web members. The upper end of the upper chord is fitted with a U-shaped washer, and the upper end of the U-shaped washer is flush with the upper end of the upper lap joint. One end of the pin is provided with a pin head, and a spring connected to the pin head is fitted on the pin. The other end of the pin is provided with a receiving hole on its side wall. A fixing rod is provided in the receiving hole. Both ends of the fixing rod are connected to elastic rods. The end of the elastic rod away from the fixing rod is located outside the receiving hole. The end of the elastic rod away from the fixing rod is connected to a stop rod, and the stop rod cooperates with the receiving hole. The truss body includes a crossbeam, with both ends of the crossbeam connected to a support mechanism. Second connecting holes are evenly distributed on the sidewalls of the crossbeam, and a steel cable is connected between the second connecting holes at both ends of the crossbeam. The ends of the steel cable are fixed by a single locking clip. A strut assembly supporting the steel cable is connected to the crossbeam. The strut assembly includes a bottom tension plate, with both ends of the bottom tension plate connected to the crossbeam via diagonal struts. A tensioning screw passes through the bottom tension plate, and a hook for pulling the steel cable is provided at the upper end of the tensioning screw. The steel cable passes around the bottom of the diagonal strut and through the second connecting hole to connect with the hook. An adjusting nut is fitted on the tensioning screw, and the adjusting nut is located at the lower end of the bottom tension plate.

2. The support truss for steel structure formwork as described in claim 1, characterized in that: The single locking clamp includes a clamping plate, a positioning plate on the clamping plate, a positioning groove for fixing the steel cable on the positioning plate, and a U-shaped pressure ring connected to the clamping plate. Both ends of the U-shaped pressure ring are provided with tension nuts.

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