Steel bar truss floor support plate fixing device

Abstract

The invention belongs to the technical field of steel bar truss floor support plate fixing devices, and particularly relates to a steel bar truss floor support plate fixing device which comprises a bottom plate, a shell is fixedly connected to the upper portion of the bottom plate, an adjusting assembly for adjusting the position of a chord member is arranged in the shell, and the position of the chord member is adjusted through movement of a moving block and a moving plate. The positions of chord members clamped in the multiple sets of clamping assemblies can be adjusted, the clamping fixture does not need to be disassembled or manually adjusted, the stability of the web members in the welding process can be effectively improved, and the situation that the welding quality of the web members is reduced due to rigid deformation of the chord members is avoided; the chord member can be always in a stable state in the position adjusting process, the stability in the moving process and after moving can be improved, the situation that the upper chord member is greatly bent in the moving process and the welding process can be avoided through the gain assembly, the web member welding quality is further improved, and the welding efficiency is improved. Therefore, the welding quality of the whole truss is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fixing devices for steel bar truss floor slabs, and specifically relates to a fixing device for steel bar truss floor slabs. Background Art

[0002] Steel bar truss floor slabs are usually used in building construction, combining steel bar trusses and profiled steel sheets as the supporting structure of the floor. The steel bar trusses are usually composed of steel bar chords and web members welded together.

[0003] The chords are divided into upper and lower chord steel bars. During the welding process with the web members, generally two lower chord steel bars and one upper chord steel bar are used as the main chords, and the three bars are placed in an isosceles triangle or V shape. Then the web members are obliquely welded to the chords to form the main body of the steel bar truss. Finally, the profiled steel sheet is fixedly or detachably installed with the main body of the steel bar truss to form a steel bar truss floor slab.

[0004] Currently, in the prior art, the trusses are generally produced in the factory and then transported to the construction site for assembly to form the overall floor slab to bear the poured concrete. However, during the welding of the trusses, when there are different construction requirements (such as differences in load, seismic resistance, etc.), it is necessary to adjust the inclination angle of the web members of the truss to meet different construction requirements. However, when welding the web members, if the inclination angle of the web members needs to be changed, it is also necessary to replace or manually adjust the fixtures or fixing devices used during the welding of the truss. Therefore, the present invention provides a fixing device for steel bar truss floor slabs. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A fixing device for steel bar truss floor slabs according to the present invention includes a bottom plate, an outer shell is fixedly connected above the bottom plate, and an adjusting assembly for adjusting the position of the chord is arranged inside the outer shell;

[0007] The adjusting assembly includes a first motor, a first lead screw is fixedly connected to the output end of the first motor, a moving block is threadedly connected to the surface of the first lead screw, a moving plate is fixedly connected below the moving block, two groups of sliding grooves are formed inside the moving plate, and the inclination directions of the sliding grooves are different. Slide bars are slidably connected to the positions of the sliding grooves inside the moving plate. A front end of the slide bar is fixedly connected to a slider, and a clamping assembly for clamping and fixing one end of the steel bar chord is arranged in front of the slider. The slider is slidably connected to the outer shell. Moving wedges are fixedly connected to both sides of the slider in front of the moving block, and multiple groups of fixed wedges are fixedly connected inside the outer shell.

[0008] Preferably, the clamping assembly includes a lever, one end of the lever is connected with a spiral ring at the rail top, the upper and lower sides of the spiral ring are threadedly connected with threaded plates, the outer sides of the threaded plates are fixedly connected with a clamping bin, the rear of the clamping bin is fixedly connected with a rear collar, and the front of the rear collar is fixedly connected with a plurality of groups of clamping plates.

[0009] Preferably, the clamping assembly further includes a front collar, the inside of the front collar is rotatably connected with a plurality of groups of limiting plates through a pin shaft, a compression spring is fixedly connected between the outer side of the limiting plate and the inner side of the front collar, the front collar is fixedly connected with the clamping bin, the inside of the spiral ring is arranged in a shape that is wider at the front and narrower at the rear, and the clamping plates are made of a ductile material.

[0010] Preferably, a hydraulic jack is further arranged above the bottom plate, and a matching assembly for assisting in adjusting the position of the chord member is arranged on both sides of the hydraulic jack. The matching assembly includes a second motor, the output end of the second motor is fixedly connected with a second lead screw, the surface of the second lead screw is threadedly connected with a first support ring, and the first support ring is slidably connected with the bottom plate.

[0011] Preferably, a gain assembly for assisting in adjusting the position of the upper chord member is arranged above the bottom plate. The gain assembly includes a support disk, the support disk slides above the bottom plate, a second support ring is slidably connected inside the support disk, an inclined top plate is movably connected above the second support ring, and one end of the inclined top plate is rotatably connected with an upper top plate.

[0012] Preferably, a pulley is rotatably connected to the lower end of the second support ring, the pulley is slidably connected with the support disk, a hinge rod is arranged at the connection position between the second support ring and the inclined top plate, and the second support ring drives the upper top plate to support the upper chord member through the inclined top plate.

[0013] Preferably, two movable hydraulic cylinders with adjustable positions are arranged above the bottom plate, a stop rod is slidably connected to the outside of the support disk, and the movable hydraulic cylinder drives one side of the support disk to adjust its position inside the stop rod.

[0014] Preferably, the lever is slidably connected with the clamping bin, the lever drives the spiral ring to rotate inside the two threaded plates and can move forward, and the spiral ring clamps the multiple groups of clamping plates during the rotation and movement process. The rear collar and the front collar are made of high-strength materials.

[0015] Preferably, the upper part of the first support ring is arranged in a semi-circular arc shape, and a protective washer is arranged on the arc surface. The height of the first support ring is the same as that of the second support ring, and one end of the second lead screw is rotatably connected with the bottom plate.

[0016] Preferably, a connecting block is provided at the connection position between the moving block and the moving plate, and a through groove is formed inside the bottom plate at the sliding position of the moving plate.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For the steel bar truss floor slab fixing device of the present invention, through the movement of the moving block and the moving plate, the position of the chord bars clamped inside multiple clamping components can be adjusted, without the need to disassemble the mold or manually adjust, and it can effectively improve the stability during the welding of the web members, avoiding the rigid deformation of the chord bars and reducing the welding quality of the web members.

[0019] 2. For the steel bar truss floor slab fixing device of the present invention, through the cooperation of the matching component and the adjusting component, the chord bars can always be in a stable state during the position adjustment process, and the stability during and after the movement can be improved. Through the gain component, a large amount of bending of the upper chord bar during the movement and the welding process can be avoided, further improving the welding quality of the web members, thereby improving the overall welding quality of the truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 is a schematic structural view of the adjusting component after removing part of the outer shell of the present invention;

[0023] Figure 3 is a schematic structural view of the moving plate and the sliding rod in the present invention;

[0024] Figure 4 is a schematic structural view of the approaching component in the present invention;

[0025] Figure 5 is a schematic structural view of the threaded ring and the threaded plate in the present invention;

[0026] Figure 6 is an exploded view of the clamping component in the present invention;

[0027] Figure 7 is a schematic structural view of the spiral ring and the clamping plate in the present invention;

[0028] Figure 8 is a schematic position structural view of the matching component in the present invention;

[0029] Figure 9 is a schematic structural view of the matching component in the present invention;

[0030] Figure 10It is a schematic structural diagram of the gain component in the present invention;

[0031] Figure 11 It is a schematic structural diagram of the second support ring and the hinge rod in the present invention;

[0032] In the figure: 1, bottom plate; 2, outer shell; 3, adjustment component; 301, first motor; 302, first lead screw; 303, moving block; 304, moving plate; 305, sliding rod; 306, slider; 307, fixed wedge block; 308, moving wedge block; 4, clamping component; 401, lever; 402, spiral ring; 403, threaded plate; 404, clamping bin; 405, front collar; 406, limiting plate; 407, rear collar; 408, clamping plate; 5, hydraulic jack; 6, matching component; 601, second motor; 602, second lead screw; 603, first support ring; 7, retaining rod; 8, gain component; 801, support disc; 802, second support ring; 803, inclined top plate; 804, upper top plate; 805, pulley; 806, hinge rod; 9, moving hydraulic cylinder. Detailed implementation manners

[0033] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0034] As Figures 1 to 3 shown, a steel bar truss floor slab fixing device described in an embodiment of the present invention includes a bottom plate 1, an outer shell 2 is fixedly connected above the bottom plate 1, and an adjustment component 3 for adjusting the position of the chord bar is arranged inside the outer shell 2;

[0035] The adjustment component 3 includes a first motor 301, a first lead screw 302 is fixedly connected to the output end of the first motor 301, a moving block 303 is threadedly connected to the surface of the first lead screw 302, a moving plate 304 is fixedly connected below the moving block 303, two groups of chutes are opened inside the moving plate 304, and the inclined directions of the chutes are different. A sliding rod 305 is slidably connected to the position of the chute inside the moving plate 304, a slider 306 is fixedly connected to the front end of the sliding rod 305, a clamping component 4 for clamping and fixing one end of the steel bar chord is arranged in front of the slider 306, the slider 306 is slidably connected to the outer shell 2, moving wedge blocks 308 are fixedly connected to both sides of the slider 306 in front of the moving block 303, and multiple groups of fixed wedge blocks 307 are fixedly connected to the inside of the outer shell 2.

[0036] The present invention takes into account that when the inclination angle of the web member needs to be adjusted according to different construction requirements, it is necessary to determine the inclination angle of the web member based on the position of the reinforced chord member at this time. Therefore, it is necessary to adjust the position of the chord member. Therefore, when one end of the chord member is inserted into the inside of the clamping assembly 4, the clamping assembly 4 fixes one end of the chord member at this time, thereby forming a rigid constraint, which can not only provide stability for the adjustment of the position of the chord member, but also improve the stability during the welding of the chord member and the web member, and can avoid the position deviation caused by the loosening or rotation of the chord member during the welding process of the chord member and the web member, and can improve the stability of welding;

[0037] It should be noted that after one end of the chord member is fixed, the first motor 301 is started to drive the first lead screw 302 to rotate at this time. The first lead screw 302 drives the moving block 303 to move up and down through screw transmission. The up and down movement of the moving block 303 drives the upper chord member to be adjusted in the up and down direction. And at this time, the movement of the moving block 303 can drive the moving plate 304 to move. The movement of the moving plate 304 can push the two clamping assemblies 4 for fixing the lower chord member to move left and right above the bottom plate 1 through the chute opened inside. At this time, since the moving block 303 and the moving plate 304 are fixedly connected, and the positions of the three clamping assemblies 4 have been in a determined state, therefore, when the moving block 303 moves upward, the moving plate 304 will drive the two lower clamping assemblies 4 below to move toward the middle through the inclined chute, so that the upper chord member and the lower chord member are always in the shape of an "isosceles triangle", ensuring that the truss realizes symmetric force and moment balance under the action of load, thereby effectively ensuring the anti-deformation ability of the overall truss during the construction and use stages;

[0038] It should be noted again that when the moving block 303 moves downward, it will drive the two lower clamping assemblies 4 below to move to the left and right sides again through the inclined chute. At this time, the upper chord member and the lower chord member can still be in the state of an "isosceles triangle". And at this time, the movement of the moving block 303 and the slide bar 305 will drive the slider 306 to slide inside the chute opened on the surface of the housing 2. The sliding of the slider 306 can improve the stability of the slide bar 305 sliding inside the inclined chute, and can also improve the stability of the clamping assembly 4 moving on the surface of the bottom plate 1 or moving on the surface of the housing 2, so as to better adjust the position of the chord member, so that the chord member is in a stable state during the adjustment process or after the adjustment is completed;

[0039] It should be further explained that when the movable block 303 drives the movable wedge block 308 to move upward through the slider 306, the bending moment or displacement load to which the steel bar chord is subjected is greater as it moves upward. At this time, the curvature of the middle position of the chord is higher. When the middle position of the chord is bent, the end of the chord will also be subject to a greater rigid constraint due to the action of the clamping assembly 4. When the locking of the clamping assembly 4 reaches a certain degree, the end of the chord may fall off. At this time, two groups of movable wedge blocks 308 are arranged on the side of the slider 306 in front of the movable block 303. When the movable wedge block 308 moves upward, the inclined surface will continuously contact the inclined surface of the fixed wedge block 307, thereby increasing the friction of the slider 306, indirectly improving the stability of the clamping assembly 4, avoiding the risk of the chord end falling off, and effectively improving the stability of the chord when adjusting its position upward, which is convenient for subsequent welding work.

[0040] like Figures 4 to 7 As shown, the clamping assembly 4 includes a lever 401, one end of the lever 401 is connected to the rail top with a spiral ring 402, the upper and lower sides of the spiral ring 402 are threadedly connected with threaded plates 403, the outer side of the threaded plate 403 is fixedly connected with a clamping bin 404, the rear of the clamping bin 404 is fixedly connected with a rear ring 407, and the front of the rear ring 407 is fixedly connected with a plurality of groups of clamping plates 408.

[0041] During operation, when it is necessary to clamp and fix the end of the chord rod, first insert one end of the chord rod into the clamping chamber 404, and then pull the lever 401 upward. The lever 401 will drive the spiral ring 402 to rotate during the movement. The rotation of the spiral ring 402 will be threaded with the two sets of threaded plates 403 on the outside. Since the threaded plates 403 are fixedly arranged inside the clamping chamber 404, the spiral ring 402 and the threaded plates 403 move forward during the rotation. At this time, the rotation of the spiral ring 402 can apply a squeezing force to the multiple sets of clamping plates 408, so that the clamping plates 408 are tightly attached to the surface of the chord rod, thereby clamping the end of the chord rod, which is convenient for the subsequent work of the chord rod.

[0042] It should be noted that, since two groups of threaded plates 403 are provided on the surface of the spiral ring 402, the rotation of the spiral ring 402 can cooperate with the two groups of threaded plates 403, which can effectively improve the stability of the spiral ring 402 after rotation and movement. Since the rear end of the clamping plate 408 is fixedly connected to the rear sleeve ring 407, when the spiral ring 402 applies a squeezing force to the clamping plate 408, the stability of the inner side of the clamping plate 408 after contacting the chord can be further improved.

[0043] like Figures 4 to 7As shown, the clamping assembly 4 further includes a front collar 405. Inside the front collar 405, a plurality of limiting plates 406 are rotatably connected by a pin shaft. A compression spring is fixedly connected between the outer side of the limiting plate 406 and the inner side of the front collar 405. The front collar 405 is fixedly connected to the clamping bin 404. The inside of the spiral ring 402 is arranged in a shape that is wider in the front and narrower in the rear. The clamping plate 408 is made of a ductile material.

[0044] During operation, when one end of the chord member is inserted into the clamping bin 404, in order to improve the accuracy of the chord member insertion, a front collar 405 is provided in front of the clamping bin 404 at this time. When the chord member is inserted, its surface will first contact the limiting plate 406 inside the front collar 405. Since a compression spring is provided between the front collar 405 and the limiting plate 406, when the chord member is inserted, it will squeeze the limiting plate 406, so that the inner side surface of the limiting plate 406 fully contacts the surface of the chord member. The limiting plates 406 that are not fully squeezed will slightly contact the surface of the chord member under the action of the compression spring. At this time, since a sounding block is provided at the end of the limiting plate 406, when the sounding block contacts the protrusion on the surface of the chord member, a sound will be emitted. In this way, the staff can judge that the position of the chord member is inaccurate and can timely adjust the position of the chord member. After the adjustment is completed, it is clamped again, which can effectively improve the clamping effect.

[0045] It should be noted that the inside of the spiral ring 402 is arranged in a shape that is wider in the front and narrower in the rear, and the clamping plate 408 is also inclined. When the spiral ring 402 rotates, it will continuously contact the inclined surface of the clamping plate 408 through the inclined surface inside, so as to apply a squeezing force to the clamping plate 408 to clamp and fix the end of the chord member. This can not only effectively improve the stability of the chord member, but also improve the accuracy of clamping the chord member, and further improve the stability of the chord member during subsequent work.

[0046] As Figure 1 and Figures 8 to 9 shown, a hydraulic jack 5 is further provided above the bottom plate 1. On both sides of the hydraulic jack 5, a matching assembly 6 for the auxiliary adjustment assembly 3 to adjust the position of the chord member is configured. The matching assembly 6 includes a second motor 601. The output end of the second motor 601 is fixedly connected to a second lead screw 602. The surface of the second lead screw 602 is threadedly connected with a first support ring 603. The first support ring 603 is slidably connected to the bottom plate 1.

[0047] During operation, when the adjusting assembly 3 adjusts the positions of multiple chord bars, in order to prevent the ends of the chord bars being clamped from being subjected to large rigid shear forces during movement, which may affect the accuracy of the final positions of the chord bars after movement, a hydraulic jack 5 for supporting the up-and-down movement of the chord bars is provided at the other end of the chord bars. When the moving block 303 drives the chord bars to move up and down through the slider 306, the hydraulic jack 5 will also move correspondingly to drive the other end of the chord bars to move and adjust, which can improve the stability of the upper chord bars during the adjustment process;

[0048] It should be noted that during the position adjustment of the upper chord bars, the positions of the two groups of lower chord bars also need to be adjusted. Therefore, the second motor 601 drives the second lead screw 602 to rotate. The rotation of the second lead screw 602 can drive the first support ring 603 to slide left and right above the bottom plate 1. At this time, the second motor 601 can rotate in cooperation with the first motor 301, so as to synchronously adjust the two groups of lower chord bars and the upper chord bars, which can effectively improve the stability during the chord bar adjustment process and avoid the clamping assembly 4 being subjected to increased rigid shear forces after clamping and fixing one end of the chord bars.

[0049] As Figures 10 to 11 shown, a gain assembly 8 for assisting the adjusting assembly 3 to adjust the position of the upper chord bars is arranged above the bottom plate 1. The gain assembly 8 includes a support disk 801 that slides above the bottom plate 1. A second support ring 802 is slidably connected inside the support disk 801. An inclined top plate 803 is movably connected above the second support ring 802. One end of the inclined top plate 803 is rotatably connected to an upper top plate 804.

[0050] During operation, when the adjusting assembly 3 and the cooperating assembly 6 are started simultaneously to adjust the positions of the upper chord bars and the lower chord bars, in order to prevent the upper chord bars from being severely bent in the middle during movement, which may affect the quality of welding between the upper chord bars and the web members, therefore, multiple groups of second support rings 802 are arranged below the two lower chord bars. When the upper chord bars move upward, the two groups of lower chord bars will move toward the middle. At this time, the movement of the lower chord bars will drive the second support rings 802 to slide inside the support disk 801. At this time, the sliding of the two groups of second support rings 802 will push the upper top plates 804 at the upper ends of the two groups of inclined top plates 803 to move upward as well, which can keep the lower part of the upper chord bars in contact with the upper top plates 804 all the time, support the upper chord bars, effectively prevent the middle position of the upper chord bars from being more bent when moving upward, and improve the straightness during subsequent welding with the web members;

[0051] It should be noted that when the upper top plate 804 supports the upper chord, at this time, since the second support ring 802 is located below the lower chord and is located in the semi-circular groove opened above the second support ring 802, when the upper top plate 804 is subjected to the pressure of the upper chord, the force will be transmitted to the position of the second support ring 802 through the inclined top plate 803, so that the force is transmitted to the lower chord, which can further improve the accuracy of the position between the upper and lower chords and facilitate the accuracy of subsequent welding of the web members.

[0052] As Figures 10 to 11 shown, a pulley 805 is rotatably connected to the lower end of the second support ring 802. The pulley 805 is slidably connected to the support plate 801. An articulated rod 806 is provided at the connection position between the second support ring 802 and the inclined top plate 803. The second support ring 802 drives the upper top plate 804 to support the upper chord through the inclined top plate 803.

[0053] During operation, when the two groups of second support rings 802 move towards the middle position, at this time, since an articulated rod 806 is provided between the second support ring 802 and the inclined top plate 803, when the upper top plate 804 is subjected to the pressure of the upper chord, the inclined top plate 803 will be angled. In order to prevent the inclined top plate 803 from breaking or being damaged after being pressured, an articulated ball is provided between the articulated rod 806 and the second support ring 802. At this time, it can allow the inclined top plate 803 to deflect slightly to a certain extent, which can effectively improve the stability of the support for the upper chord;

[0054] It should be noted that when the web member is welded to the surfaces of the upper and lower chords, when the chords are in contact with the high temperature of welding, deformation may occur. When the lower chord is deformed and slightly bent and contacts the second support ring 802, at this time, since the inclined top plate 803 and the second support ring 802 are articulated with an articulated rod 806, the second support ring 802 can be angled around the articulated ball by the deformation force of the chord, which can prevent the second support ring 802 from collapsing after being pressured. And at this time, the second support ring 802 can slow down the deformation force of the chord to a certain extent, which can effectively improve the stability during the welding process of the web member and the chord;

[0055] It should be noted again that when the upper chord is bent, at this time, the upper top plate 804 and the inclined top plate 803 are rotatably connected by a pin shaft, and the force generated by the upper chord will also be slowed down by the upper top plate 804, which can also improve the stability of the upper chord during the welding process.

[0056] As Figure 1 and Figure 8As shown in the figure, there are two sets of movable hydraulic cylinders 9 with adjustable positions above the bottom plate 1. A stop rod 7 is slidably connected to the outside of the support disc 801. The movable hydraulic cylinder 9 drives one side of the support disc 801 to adjust its position inside the stop rod 7.

[0057] During operation, when the web member is welded to the surface of the upper and lower chord members, first, the front and rear are welded and fixed. After the positions of the front and rear are confirmed, when the worker welds from the front of the chord member, at this time, the two sets of support discs 801 at the rear are moved by moving the movable hydraulic cylinder 9, and then the movable hydraulic cylinder 9 is started to control the support disc 801 to slide above the bottom plate 1. After slowly welding the front of the web member, at this time, the movable hydraulic cylinder 9 is used to control the support disc 801 to move backward, which can effectively avoid that during the welding process of the web member and the chord member, if there is a large deformation force in the upper and lower chord members, the support of multiple second support rings 802 and inclined roof plates 803 can effectively reduce the deformation force and at the same time effectively support the chord member.

[0058] As Figures 4 to 7 shown, the shift lever 401 is slidably connected to the clamping bin 404. The shift lever 401 drives the spiral ring 402 to rotate inside the two threaded plates 403 and can move forward. During the rotation and movement of the spiral ring 402, multiple clamping plates 408 are clamped. The rear sleeve ring 407 and the front sleeve ring 405 are made of high-strength materials.

[0059] During operation, since there is a gap between each clamping plate 408, before the inner side of the clamping plate 408 clamps the end of the chord member, even if the axis of the chord member and the axis of the rear sleeve ring 407 are not on the same horizontal line at this time, when the spiral ring 402 applies an extrusion force to the clamping plate 408, the end of the chord member can also be clamped, which can improve the accuracy after the chord member is clamped and facilitate the subsequent web member welding work;

[0060] It should be noted that since the clamping bin 404 into which the upper chord member is inserted is slidably connected to the surface of the housing 2, when the moving block 303 drives the clamping bin 404 into which the upper chord member is inserted to move, at this time, the hydraulic ejector rod 5 will also be started to push the other end of the chord member, so that the whole chord member moves smoothly upward or downward, which can effectively improve the stability during the movement of the chord member.

[0061] As Figures 8 to 9 shown, the upper part of the first support ring 603 is arranged in a semi-circular arc shape, and a protective washer is arranged on the arc surface. The height of the first support ring 603 is the same as that of the second support ring 802. One end of the second lead screw 602 is rotatably connected to the bottom plate 1.

[0062] During operation, by setting the upper end of the first support ring 603 to a semi-circular arc shape, when the chord is placed above the first support ring 603 and then moved, since there is a clearance between the semi-circular arc formed above the first support ring 603 and the chord, even if a rigid force is generated during the movement of the chord, the force exerted by the chord can be buffered and attenuated due to the existence of the clearance, which can further improve the stability of the chord during movement.

[0063] As Figures 2 to 3 shown, a connecting block is provided at the connection position between the moving block 303 and the moving plate 304, and a through groove is formed in the bottom plate 1 at the sliding position of the moving plate 304.

[0064] During operation, since the surface of the moving plate 304 slides in the through groove formed in the bottom plate 1, at this time, regardless of whether the moving plate 304 is subjected to the pulling force or the pushing force of the moving block 303, it can stably slide inside the through groove. And since the shape of the sliding groove is the same as that of the moving plate 304, during the sliding process of the moving plate 304 at this time, the sliding groove can effectively limit the periphery of the moving plate 304, which can further improve the stability of the two lower clamping assemblies 4 during movement.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel bar truss floor deck fixing device, characterized in that: It comprises a bottom plate, a shell is fixedly connected to the top of the bottom plate, and an adjustment component for adjusting the position of the chord rod is arranged inside the shell; The adjusting component includes a first motor, an output end of the first motor is fixedly connected to a first screw rod, a surface of the first screw rod is threadedly connected to a moving block, a moving plate is fixedly connected to the lower part of the moving block, two groups of slide grooves are opened inside the moving plate, and the inclination directions of the slide grooves are different, a slide rod is slidably connected to the position of the slide groove inside the moving plate, a slider is fixedly connected to the front end of the slide rod, a clamping component for clamping and fixing one end of the steel bar chord is arranged in front of the slider, the slider is slidably connected to the outer shell, and moving wedges are fixedly connected to both sides of the slider in front of the moving block, and a plurality of groups of fixed wedges are fixedly connected to the inside of the outer shell.

2. A steel bar truss floor deck fixing device according to claim 1, characterized in that: The clamping assembly includes a lever, one end of the lever is connected to a spiral ring on the rail top, the upper and lower sides of the spiral ring are threadedly connected to threaded plates, the outer side of the threaded plate is fixedly connected to a clamping bin, the rear of the clamping bin is fixedly connected to a rear ring, and the front of the rear ring is fixedly connected to a plurality of groups of clamping plates.

3. A steel bar truss floor deck fixing device according to claim 2, characterized in that: The clamping assembly also includes a front ring, the interior of which is rotatably connected to multiple groups of limit plates via pins, the outer side of the limit plate and the inner side of the front ring are fixedly connected with a compression spring, the front ring is fixedly connected to the clamping bin, the interior of the spiral ring is wide at the front and narrow at the back, and the clamping plate is made of tough material.

4. A steel bar truss floor deck fixing device according to claim 3, characterized in that: A hydraulic push rod is also provided above the base plate, and auxiliary adjustment components are configured on both sides of the hydraulic push rod to adjust the position of the chord rod. The matching components include a second motor, and the output end of the second motor is fixedly connected to a second screw rod, and the surface of the second screw rod is threadedly connected to a first support ring, and the first support ring is slidably connected to the base plate.

5. A steel bar truss floor deck fixing device according to claim 1, characterized in that: A gain component for adjusting the position of the upper chord rod by an auxiliary adjustment component is arranged above the base plate, and the gain component includes a support plate, which slides above the base plate, a second support ring is slidably connected inside the support plate, an inclined top plate is movably connected above the second support ring, and one end of the inclined top plate is rotatably connected to the upper top plate.

6. A steel bar truss floor deck fixing device according to claim 5, characterized in that: The lower end of the second support ring is rotatably connected to a pulley, and the pulley is slidably connected to the support plate. A hinged rod is provided at the connection position between the second support ring and the inclined top plate. The second support ring drives the upper top plate through the inclined top plate to support the upper chord rod.

7. A steel bar truss floor deck fixing device according to claim 5, characterized in that: Two groups of movable hydraulic cylinders with adjustable positions are arranged above the bottom plate, a shift rod is slidably connected to the outer side of the support plate, and the movable hydraulic cylinder drives one side of the support plate to adjust its position inside the shift rod.

8. A steel bar truss floor deck fixing device according to claim 2, characterized in that: The lever is slidably connected to the clamping bin. The lever drives the spiral ring to rotate inside the two sets of threaded plates and can move forward. The spiral ring clamps multiple sets of clamping plates during its rotation and movement. The rear ring and the front ring are made of high-strength material.

9. A steel bar truss floor deck fixing device according to claim 4, characterized in that: The upper part of the first support ring is arranged in a semicircular arc shape, and a protective gasket is arranged on the arc surface. The height of the first support ring is consistent with the height of the second support ring, and one end of the second screw rod is rotatably connected to the bottom plate.

10. A steel bar truss floor deck fixing device according to claim 1, characterized in that: A connecting block is arranged at the connecting position between the moving block and the moving plate, and a through groove is arranged inside the bottom plate at the sliding position of the moving plate.

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