A steel truss floor deck connection fastener and assembly tooling

Abstract

The present invention relates to a steel bar truss floor deck connection fastener and assembly tooling, comprising an upper fastener, a lower fastener and an assembly tooling, wherein the left and right elastic fasteners of the upper fastener are adapted to be clamped with the left and right clamping grooves of the lower fastener; a convex portion or a concave portion or at least two convex portions and / or concave portions spaced and distributed in a plane perpendicular to the axial direction of the upper receiving groove are provided on the outer portion of the upper fastener, and a torsion force toward one side is provided to the upper fastener when the assembly tooling is pulled so as to facilitate the smooth clamping of the upper fastener with the lower fastener. A clamping groove and / or a clamping boss are provided on the clamping head corresponding to the convex portion and / or concave portion of the upper fastener, and a pressing portion that can be pressed against the upper fastener is also provided on the clamping head, and the pressing portion and the clamping groove and / or the clamping boss act on different sides of the upper fastener respectively to form a lever structure that provides the upper fastener with a torsion force to twist toward one side; one end of the rod body is fixedly connected to the clamping head, and the other end extends in a direction away from the clamping head, which is more time-saving and labor-saving and has high efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of building components, and in particular relates to a steel bar truss floor deck connecting fastener and an assembly tool. Background Art

[0002] Steel truss floor deck is a kind of building product that welds the load-bearing steel bars in the floor deck into steel trusses in the factory, and fixes the steel trusses to the bottom formwork to form a self-supporting integrated force-bearing building product. During construction, the self-supporting detachable steel truss floor deck is fixed between the load-bearing beams and poured directly with concrete. The bottom formwork bears the gravity of the concrete, and the steel truss provides an unsupported span and rigidity for the bottom formwork and concrete. Compared with traditional cast-in-place floor slabs, detachable steel truss floor decks or steel truss floor decks that do not require formwork removal speed up the construction speed and enhance the supporting effect. The detachable steel truss floor deck can also realize the recycling of the bottom formwork after pouring.

[0003] In the prior art, the steel truss of the floor deck is connected to the bottom form by a connecting fastener, and the construction load and the concrete gravity load act directly on the bottom form. Since the fastener connects the bottom form with the steel truss, the construction load and the concrete gravity load act indirectly on the steel truss through the connecting fastener, thereby achieving the effect of no support. The patent application number CN213359052U previously applied by the applicant discloses an assembled connecting fastener and a steel truss floor deck, wherein the connecting fastener includes a lower fastener fixed on the bottom form and a clamping adapter connected to the lower fastener. When the connecting fastener is used, first fix the lower fastener of the connecting fastener to the bottom mold with screws, and each steel bar truss corresponds to two rows of connecting fasteners. Then, the two lower chord steel bars of the steel bar truss are placed in the lower receiving groove of the lower fastener of the connecting fastener. Then, the upper fastener is pressed downward, so that the left elastic buckle at the lower end of the left wall of the upper fastener is snapped into the left snap groove of the lower fastener, and the right elastic buckle at the lower end of the right wall of the upper fastener is snapped into the right snap groove of the lower fastener, so that the steel bar truss and the bottom mold are fixedly connected through the snap-fitting of the connecting fastener. However, when the upper fastener is snap-fitted downward with the lower fastener, the following problems exist:

[0004] 1. The operation is inconvenient and laborious. It is difficult to use force. It takes a lot of effort to connect the upper fastener with the lower fastener. If the upper fastener is set to be softer, it cannot meet the high strength requirements required for the connection between the upper and lower fasteners.

[0005] 2. During operation, the upper fastener needs to be pressed manually to insert it into the lower fastener. Since the upper and lower fasteners are very small, the upper fastener deformed by the pressure can easily pinch the skin, resulting in a poor user experience.

[0006] 3. Since the upper fastener needs to clamp the hook on one side of the lower fastener and then press the other side, the pressing process is time-consuming and the upper fastener is easily popped out due to its elasticity, which makes the efficiency of connecting the upper and lower fasteners very low, affecting the construction progress and consuming more manpower.

[0007] Therefore, it is urgent to introduce new technologies that can solve the above three core technical problems while utilizing the convenience of connecting the upper and lower fasteners. Summary of the invention

[0008] The purpose of the present invention is to provide a steel truss floor deck connecting fastener to solve the technical problems of the connecting fasteners in the prior art that they are inconvenient to assemble, time-consuming and labor-intensive, inefficient, and easy to pinch the skin.

[0009] To achieve the above-mentioned purpose, the technical solution of the steel bar truss floor deck connection fastener of the present invention is as follows:

[0010] A steel bar truss floor deck connection fastener, comprising:

[0011] The lower fastener has a connection hole for connecting with the bottom mold at the lower part, and a lower receiving groove for receiving the lower chord steel bars of the steel truss at the upper part, and left and right clamping grooves are respectively provided on both sides of the lower fastener;

[0012] The upper fastener comprises a cavity with a lower end and openings on both sides, the side walls of the cavity forming left and right elastic buckles respectively adapted to engage with the left and right clamping grooves, and the top of the cavity forming an upper receiving groove for accommodating the lower chord steel bars of the steel bar truss;

[0013] The left elastic buckle of the upper buckle is adapted to be snap-fitted with the left snap-fitting groove of the lower buckle, and the right elastic buckle of the upper buckle is adapted to be snap-fitted with the right snap-fitting groove of the lower buckle;

[0014] After the upper fastener is clamped with the lower fastener, the upper receiving groove and the lower receiving groove together form a receiving groove for fixing the lower chord steel bars of the steel bar truss;

[0015] The outer part of the upper fastener is provided with a raised portion or a recessed portion or at least two raised portions and / or recessed portions spaced apart in a plane along the axial direction perpendicular to the upper receiving groove, so that a special assembly tool can be clamped on the raised portion and / or recessed portion to form a lever structure, and a torque toward one side is provided to the upper fastener when the assembly tool is pulled so that the upper fastener can be smoothly clamped with the lower fastener.

[0016] Furthermore, the protrusion and the recess are integrally formed with the upper fastener.

[0017] Furthermore, the protrusion and the recess extend in a direction parallel to the axis of the upper receiving groove.

[0018] Furthermore, the lengths of the protrusion and the recess are the same as the length of the upper fastener.

[0019] Furthermore, four protrusions are arranged on the outside of the upper fastener, and the four protrusions are arranged symmetrically with respect to the upper fastener, and the two protrusions on each side are arranged at intervals up and down.

[0020] The technical solution of the steel bar truss floor deck connection fastener assembly tool of the present invention is as follows:

[0021] A steel bar truss floor deck connection fastener assembly tool, comprising:

[0022] A clamping head, on which a clamping groove and / or a clamping boss adapted to be clamped is provided corresponding to the raised portion and / or the recessed portion of the upper fastener, and the clamping head is also provided with a pressing portion that can press against the upper fastener, and the pressing portion and the clamping groove and / or the clamping boss respectively act on different side surfaces of the upper fastener to form a lever structure that can provide a torsional force for the upper fastener to twist toward one side;

[0023] The rod body has one end fixedly connected to the clamping head and the other end extending in a direction away from the clamping head.

[0024] Furthermore, the clamping groove and the clamping boss extend in a direction perpendicular to the rod body.

[0025] Furthermore, the lengths of the clamping groove and the clamping boss are the same as the width of the clamping head.

[0026] Furthermore, the clamping head is provided with a clamping groove and an avoidance groove spaced apart from the clamping groove, the clamping groove is used to clamp onto one of the protrusions of the upper fastener, and the avoidance groove is used to avoid a protrusion on the other side of the upper fastener.

[0027] The beneficial effects of the present invention are as follows: when the steel bar truss floor deck connection fastener and the assembly tooling of the present invention are used in conjunction with each other: the lower fastener is fixed to the bottom mold by bolts, the steel bar is placed on the lower receiving groove, and then one of the left and right elastic clips of the upper fastener is hooked into the slot on the corresponding side, and then the clamping groove or clamping boss of the assembly tooling is clamped on the corresponding raised portion or recessed portion of the upper fastener as a fulcrum, and the pressing portion is pressed against the other side of the upper fastener to form a force application point, and the entire assembly tooling and the upper fastener form a lever structure, and by pulling the rod body to apply a torsional force to one side to the upper fastener, an elastic clip of the upper fastener that has not yet been buckled on the lower fastener squeezes the lower fastener to deform. , until it is deformed to the point where the elastic buckle corresponds to the slot of the lower buckle. The whole process can be completed in a few seconds. Due to the use of the lever structure formed by the assembly tooling, the characteristic of the lever arm that the longer the lever arm, the smaller the force, is fully utilized during operation. The upper buckle can be clamped on the lower buckle with very little force. At the same time, after adopting this solution, the upper buckle can use higher-strength materials or structures to meet high-strength requirements without worrying about the problem of very laborious operation. Moreover, during the operation, the human hand will not come into contact with the deformed area of ​​the upper buckle, so being pinched can be avoided. The whole operation can basically be completed in two actions and takes only a few seconds, so the assembly efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a lower fastener of Example 1 of a steel bar truss floor deck connection fastener of the present invention;

[0029] Figure 2 It is a structural schematic diagram of an upper fastener of Example 1 of a steel bar truss floor deck connection fastener of the present invention;

[0030] Figure 3 It is a structural schematic diagram of Example 1 of an assembly tool for connecting fasteners of a steel truss floor deck of the present invention;

[0031] Figure 4 It is a schematic diagram of the use status of a steel bar truss floor deck connection fastener assembly tool and a connection fastener of the present invention;

[0032] Figure 5 It is a structural schematic diagram of a second embodiment of a steel bar truss floor deck connection fastener and assembly tooling of the present invention;

[0033] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the assembly tooling;

[0034] Figure 7 for Figure 5 The front view of the assembly tool in FIG.

[0035] Figure 8 It is a structural schematic diagram of a third embodiment of a steel bar truss floor deck connection fastener and assembly tooling of the present invention;

[0036] Figure 1-7 Middle: 1-lower buckle; 2-lower receiving groove; 3-left card slot; 4-upper buckle; 5-top wall; 6-left side wall; 7-right side wall; 8-first protrusion; 9-second protrusion; 10-clip head; 11-rod body; 12-operating handle; 13-accommodating cavity; 14-clip groove; 15-avoidance groove; 16-lower surface of the card head;

[0037] Figure 8 Middle: 4-upper fastener, 6-left side wall; 7-right side wall; 8-recessed portion; 11-rod body, 12-clamping boss. DETAILED DESCRIPTION

[0038] The following is a further detailed description of a specific embodiment 1 of a steel bar truss floor deck connection fastener of the present invention in conjunction with the accompanying drawings and specific implementation methods:

[0039] like Figure 1 As shown, a steel bar truss floor deck connection fastener of the present invention comprises a lower fastener 1 and an upper fastener 4. The lower fastener 1 is extended in the front-to-back direction. The lower surface of the lower fastener 1 is provided with a connection hole fixedly connected to the bottom mold. The upper surface of the lower fastener 1 is provided with a lower receiving groove 2 for receiving the lower chord steel bars of the steel bar truss. The lower receiving groove 2 is a through groove extending in the front-to-back direction of the lower fastener 1. The left wall surface and the right wall surface of the lower fastener 1 are respectively provided with a left clamping groove 3 and a right clamping groove. The specific structure of the lower fastener 1 is the prior art. The specific structure of the lower fastener 1 in this embodiment is the same as the structure of the lower fastener 1 in an assembled connection fastener and a steel bar truss floor deck with publication number CN213359052U, and will not be repeated here.

[0040] The upper fastener 4 is extended in the front-to-back direction, and the cross section of the upper fastener 4 is in an inverted "U" shape. The upper fastener 4 includes a top wall 5 and a left side wall 6 and a right side wall 7 integrally connected to the top wall 5. The lower end of the left side wall 6 is provided with a left elastic buckle, and the lower end of the right side wall 7 is provided with a right elastic buckle. The top wall 5 is provided with an upper receiving groove for accommodating the lower chord steel bars of the steel truss; the left elastic buckle of the upper fastener 4 is snap-fitted with the left snap-fitting groove 3 of the lower fastener 1, and the right elastic buckle of the upper fastener 4 is snap-fitted with the right snap-fitting groove of the lower fastener 1; after the upper fastener 4 is snap-fitted with the lower fastener 1, the upper receiving groove and the lower receiving groove 2 jointly form a receiving groove for fixing the lower chord steel bars of the steel truss. The specific structure of the left elastic buckle and the right elastic buckle of the upper fastener 4 is the prior art, and the main structure of the upper fastener 4, the specific structure of the left elastic buckle and the right elastic buckle in the upper fastener 4 are the same as those of an assembled connecting fastener and the main structure of the upper fastener 4 in the steel truss floor deck with publication number CN213359052U, and the left elastic buckle and the right elastic buckle structure in the upper fastener 4, respectively, and will not be repeated here.

[0041] The upper fastener 4 in this embodiment is different from an assembled connecting fastener with publication number CN213359052U and the upper fastener in the steel truss floor decking plate in that the upper fastener 4 is provided with a first and a second protrusion, the first protrusion 8 is used to engage with the assembly tooling, and the second protrusion 9 is used to engage with the assembly tooling stop, so as to facilitate the engagement and adaptation of the upper fastener 4 with the lower fastener 1 by rotating the assembly tooling.

[0042] Among them, the first protrusion 8 and the second protrusion 9 are respectively integrally formed with the upper fastener 4, and the length of the first protrusion 8 in the front-to-back direction is equal to the length of the upper fastener 4 in the front-to-back direction; the length of the second protrusion 9 in the front-to-back direction is equal to the length of the upper fastener 4 in the front-to-back direction. This structural arrangement increases the connection strength between the first protrusion 8, the second protrusion 9 and the upper fastener 4.

[0043] Specifically, two first protrusions 8 are provided, and the two first protrusions 8 are symmetrically arranged on the top wall 5 of the upper fastener 4 at left and right intervals; two second protrusions 9 are provided, and the two second protrusions 9 are respectively arranged on the left side wall 6 and the right side wall 7, and the two second protrusions 9 are symmetrically arranged on the left and right sides; the upper fastener 4 has a symmetrical structure, so that the assembly tool does not need to distinguish between the left and right sides of the upper fastener 4 when it is snap-fitted with the upper fastener 4, which makes it more convenient for the assembly tool to be snap-fitted with the upper fastener 4.

[0044] In order to prevent the assembly tool from slipping after being engaged with the upper fastener 4 , the cross-sectional shape of the first protrusion 8 is a rectangle, and the cross-sectional shape of the second protrusion 9 is a rectangle.

[0045] In other embodiments, the protrusions may be replaced by recesses, and the corresponding snap-in grooves of the assembly tooling may be replaced by snap-in bosses of matching shapes, thereby forming concave-convex structures that match each other. Of course, when there are multiple protrusions, some may be set as protrusions and the other may be set as recesses, so that the corresponding matching relationship can be achieved.

[0046] In other embodiments, the shape and length of the protrusion or recess may also be changed as needed, and the number may also be adjusted appropriately, for example, the shape may be cylindrical, the number may be three, etc.

[0047] Embodiment 1 of a steel bar truss floor deck connection fastener assembly tool, as shown in Figure 3 As shown, the clamp head 10 is provided with a receiving cavity 13 adapted to the shape of the upper fastener 4. In other embodiments, the shape of the receiving cavity may be different from the shape of the upper fastener 4, but it must be able to accommodate the upper fastener 4. The height of the left side of the receiving cavity 13 in the vertical direction is greater than the height of the right side in the vertical direction, so that the lower surface of the left side of the receiving cavity 13 forms a clamp head lower surface 16, and the clamp head lower surface 16 is a horizontal surface. After the structural form of the clamp head 10 is adapted to the upper fastener 4, the clamp head 10 forms a semi-enclosed form for the upper fastener 4.

[0048] A clamping groove 14 that is clamped and adapted to one of the first protrusions 8 is provided on the inner wall surface of the accommodating cavity 13 of the clamp head 10, and an avoidance groove 15 for avoiding the other first protrusion 8 is also provided on the inner wall surface of the accommodating cavity 13 of the clamp head 10. Specifically, in order to facilitate the first protrusion 8 to enter the avoidance groove 15, in this embodiment, the length of the avoidance groove 15 on the inner wall surface of the accommodating cavity 13 is greater than the length of the first protrusion 8 on the outer surface of the upper fastener 4. A pressing portion that can be pressed against the upper fastener is formed at one end corresponding to the lower surface 16 of the clamp head, and the pressing portion and the clamping groove and / or the clamping boss act on different sides of the upper fastener respectively to form a lever structure that can provide a torsional force for the upper fastener to twist toward one side.

[0049] In this embodiment, the snap-fitting groove 14 is arranged on the right side of the accommodating cavity 13, and the avoidance groove 15 is opened on the right side of the accommodating cavity 13. When the first protrusion 8 on the right side is snap-fitted with the snap-fitting groove 14, the avoidance groove 15 can just avoid the first protrusion 8 on the left side. At the same time, the stopping portion of the upper fastener 4 is located below the lower surface 16 of the clamping head and is stopped and matched with the lower surface 16 of the clamping head. That is, the second protrusion 9 on the left side of the upper fastener 4 is located below the lower surface 16 of the clamping head to stop and match with the lower surface 16 of the clamping head, so that the upper fastener 4 is snap-fitted with the lower fastener 1 by rotating the assembly tooling.

[0050] In this embodiment, the length of the snap-in groove 14 in the front-to-back direction is equal to the length of the clamping head 10 in the front-to-back direction so that the snap-in groove 14 is a through groove of the clamping head 10 in the front-to-back direction, thereby facilitating the snap-in adaptation of the snap-in groove 14 of the assembly tooling with the first protrusion 8 on the upper fastener 4.

[0051] Since the cross-sectional shape of the first protrusion 8 of the upper fastener 4 of this embodiment is rectangular, the cross-sectional shape of the clamping groove 14 is adapted to the cross-sectional shape of the first protrusion 8, that is, the cross-sectional shape of the clamping groove 14 is also rectangular. This prevents the clamping groove 14 from slipping after being clamped with the first protrusion 8, and at the same time increases the contact area between the first protrusion 8 and the clamping groove 14, so that when the assembly tool is rotated, the upper fastener 4 can be rotated together with the assembly tool, and the clamping fit between the upper fastener 4 and the lower fastener 1 is smoothly achieved.

[0052] In this embodiment, a rod 11 is fixedly connected to the upper surface of the clamp 10. The rod 11 extends in the up-down direction, and the lower end of the rod is fixedly connected to the upper surface of the clamp 10. In order to facilitate the operation of the clamp 10, an operating handle 12 is fixedly provided above the rod 11.

[0053] When the assembly tool of the present invention is in use, the lower fastener 1 of the connecting fastener is first fixedly connected to the bottom mold by fixing bolts, and each steel bar truss corresponds to two rows of connecting fasteners. Then, the two lower chord steel bars of the steel bar truss are correspondingly placed in the lower receiving groove 2 of the lower fastener 1 of the connecting fastener. Then, the right elastic buckle of the upper fastener 4 is snap-fitted with the right snap-fitting groove of the lower fastener 1. Then, the upper fastener 4 is snap-fitted with the lower fastener 1 using the assembly tool. Specifically, the upper fastener 4 is located in the receiving cavity 13 of the assembly tool. At this time, the first protrusion 8 on the right side is snap-fitted with the snap-fitting groove 14, and the avoidance groove 15 can avoid the first protrusion 8 on the left side. At the same time, the upper fastener 4 The second protrusion 9 on the right side is located below the lower surface 16 of the clamp head and is blocked with the lower surface 16 of the clamp head, and then the assembly tool is rotated from right to left. At this time, the right elastic buckle of the upper fastener 4 is clamped and adapted with the right clamping groove of the lower fastener 1. The assembly tool is clamped and adapted with the first protrusion 8 on the right side through the clamping groove 14 and is blocked with the second protrusion 9 on the left side through the lower surface, so that a force can be applied to the left side wall 6 of the upper fastener 4 when rotating the assembly tool, so that the left elastic buckle of the left side wall 6 of the upper fastener 4 enters the left clamping groove 3 of the lower fastener 1, realizing the clamping adaptation of the upper fastener 4 and the lower fastener 1, and then the assembly tool can be pulled off from the upper fastener 4. Of course, the assembly tool of the present invention can be used by switching the assembly tool left and right according to the on-site construction conditions and the operating habits of the operators.

[0054] In other embodiments, different from the specific embodiment 1, a first protrusion is provided, and a second protrusion is also provided. The first protrusion and the second protrusion are respectively located on the left and right sides of the upper fastener, and the first protrusion is integrally connected to the top wall of the upper fastener, and the second protrusion is integrally connected to the side wall of the upper fastener. At this time, the avoidance groove on the inner wall surface of the accommodating cavity of the assembly tool adapted to the connecting fastener may not be provided.

[0055] In the above embodiment, the protrusion is a first protrusion integrally formed with the upper fastener, and the length of the first protrusion in the front-to-back direction is equal to the length of the upper fastener in the front-to-back direction; the stopping portion is a second protrusion integrally formed with the upper fastener, and the length of the second protrusion in the front-to-back direction is equal to the length of the upper fastener in the front-to-back direction; in other embodiments, the length of the first protrusion in the front-to-back direction is smaller than the length of the upper fastener in the front-to-back direction, and the length of the second protrusion in the front-to-back direction is smaller than the length of the upper fastener in the front-to-back direction.

[0056] In the above embodiment, the cross-sectional shape of the first protrusion is a rectangle, and the cross-sectional shape of the second protrusion is a rectangle; in other embodiments, the cross-sectional shape of the first protrusion is an inverted trapezoid, and the cross-sectional shape of the second protrusion is an inverted trapezoid.

[0057] In the above embodiment, the length of the clamping groove in the front-to-back direction is equal to the length of the clamping head in the front-to-back direction so that the clamping groove is a through groove of the clamping head in the front-to-back direction; in other embodiments, the length of the clamping groove in the front-to-back direction is less than the length of the clamping head in the front-to-back direction.

[0058] In the above embodiment, when the cross-sectional shape of the first protrusion is a rectangle, the cross-sectional shape of the snap-fit ​​groove is a rectangle; in other embodiments, when the cross-sectional shape of the first protrusion is an inverted trapezoid, the cross-sectional shape of the snap-fit ​​groove is an inverted trapezoid.

[0059] In the above embodiment, the length of the avoidance groove on the inner wall surface of the accommodating cavity is greater than the length of the left first protrusion on the outer surface of the upper fastener; in other embodiments, the length of the avoidance groove on the inner wall surface of the accommodating cavity is equal to the length of the left first protrusion on the outer surface of the upper fastener.

[0060] In the above embodiment, an operating handle is fixedly disposed on the top of the rod body; in other embodiments, the operating handle may not be disposed, or the operating handle may be in other structural forms.

[0061] Embodiment 2 of the present invention of the connecting fastener and assembly tool of the steel bar truss floor deck: Figure 5-7 As shown, the difference between this embodiment and the above embodiment is that the shape of the chuck 10 is improved. The chuck 10 is a metal part, and the whole is sickle-shaped. The rear end can be used for welding the rod body 11. The rod body 11 is made of a steel pipe as a whole, one end of which is welded to the chuck 10, and the other end is used as a handle 12.

[0062] Embodiment 3 of the present invention of a steel bar truss floor deck connection fastener and assembly tooling: Figure 8 As shown, the difference from embodiments 1 and 2 is that the raised portion on the upper fastener 4 is changed to a recessed portion 8, and the corresponding assembly tool is changed to a combination of a rod 11 and a clamping boss 12, and the structure is simpler.

Claims

1. A steel bar truss floor deck connection fastener, comprising: The lower fastener is provided with a connecting hole for connecting with the bottom mold at the lower part, and a lower receiving groove for accommodating the lower chord steel bars of the steel truss at the upper part, and left and right clamping grooves are respectively provided on both sides of the lower fastener; the upper fastener has an inverted "U"-shaped cross-section, including a cavity with a lower end and openings on both sides, and the side walls of the cavity form left and right elastic clamps respectively adapted to be clamped with the left and right clamping grooves, and the top of the cavity forms an upper receiving groove for accommodating the lower chord steel bars of the steel truss; the left elastic clamp of the upper fastener is adapted to be clamped with the left clamping groove of the lower fastener, and the right elastic clamp of the upper fastener is adapted to be clamped with the right clamping groove of the lower fastener; after the upper fastener is clamped with the lower fastener, the upper receiving groove and the lower receiving groove jointly form a receiving groove for fixing the lower chord steel bars of the steel truss; the outer part of the upper fastener is provided with two protrusions spaced apart in a plane perpendicular to the axial direction of the upper receiving groove, so as to facilitate the special assembly tool to be clamped on the protrusion to form a lever structure, and When the movable assembly tool is used, a torque toward one side is provided to the upper fastener so that the upper fastener can be smoothly engaged with the lower fastener; the protrusion is integrally formed with the upper fastener, and the protrusion extends along the axial direction parallel to the upper accommodating groove, and the length of the protrusion is the same as the length of the upper fastener. Four protrusions are arranged on the outside of the upper fastener, and the four protrusions are symmetrically arranged about the upper fastener. The two protrusions on each side are arranged at intervals up and down. The four protrusions include a first and a second protrusion. The cross-sectional shape of the first and the second protrusions is rectangular. The first protrusion is used to engage with the assembly tool, and the second protrusion is located below the lower surface of the clamping head of the assembly tool to engage with the lower surface of the clamping head, so that when the assembly tool is rotated, a force can be applied to the corresponding side wall of the upper fastener, so that the elastic buckle of the corresponding side wall of the upper fastener enters the clamping groove of the lower fastener, thereby realizing the clamping adaptation of the upper fastener and the lower fastener.

2. An assembly tool for the steel bar truss floor deck connection fastener as claimed in claim 1, comprising: The clamping head is provided with a clamping groove corresponding to the protrusion of the upper fastener, and the clamping head is also provided with a pressing portion that can press against the upper fastener, and the pressing portion and the clamping groove respectively act on different sides of the upper fastener to form a lever structure that can provide the upper fastener with a torsional force to twist toward one side; the cross-sectional shape of the clamping groove is adapted to the cross-sectional shape of the first protrusion of the upper fastener, and the clamping groove extends in a direction perpendicular to the rod body, and the length of the clamping groove is the same as the width of the clamping head. The clamping head is provided with a clamping groove and an avoidance groove spaced apart from the clamping groove, the clamping groove is used to clamp on one of the first protrusions of the upper fastener, and the avoidance groove is used to avoid a first protrusion on the other side of the upper fastener; the clamping head is provided with a accommodating cavity adapted to the shape of the upper fastener; the rod body is fixedly connected to the clamping head at one end, and extends in the direction away from the clamping head at the other end.

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