Connecting piece for assembly type steel bar truss

Abstract

The utility model provides a connecting piece for an assembly type steel bar truss, which belongs to the technical field of building construction and comprises a connecting block body, two first limiting protruding parts, two second limiting protruding parts and a plurality of fasteners. A connecting hole is formed in the connecting block body, an avoiding groove and two branch grooves are formed in the connecting block body, the two first limiting protruding parts are arranged on the upper sides of the two inner walls of the avoiding groove, and a first channel is formed between the two first limiting protruding parts and the avoiding groove; the two second limiting protruding parts are installed on the upper sides of the groove inner walls of the two grooves correspondingly, and a second channel and a third channel are arranged between the second limiting protruding parts and the grooves. A clamping cavity is formed by the second limiting protruding part and the groove, and the steel bar truss is clamped in the clamping cavity; the fastener is connected into the connecting hole from the lower end face of the bottom plate and used for being fixedly connected to the connecting block body and the bottom plate. According to the connecting piece for the assembly type steel bar truss, the steel bar fixing effect is better, tedious operation such as spot welding is avoided, and consumed time is short.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and more specifically relates to a connector for an assembled steel bar truss. Background Art

[0002] Steel trusses are an important part of building structure design. Steel trusses form a continuous frame structure through connecting components, which increases the stability of the building structure and enables it to withstand greater loads. In addition, steel trusses can transfer building loads to the foundation, thereby sharing and bearing the building loads, ensuring the structure and safety of the building. At the same time, the connection method and structure of steel trusses give the building good seismic resistance. During the construction process, the steel trusses and the base plate are connected to form a combined load-bearing plate as a whole through resistance spot welding to form a steel truss floor deck. The steel trusses are mostly fixed to the base plate by spot welding, but this method is more cumbersome and time-consuming. There are also methods that use connecting fasteners pre-installed on the base plate and clamp the steel trusses on the connecting fasteners. In this way, the steel trusses are also easy to detach from the connecting fasteners, and the fixing effect is poor. Utility Model Content

[0003] The utility model aims to provide a connector for an assembled steel truss to solve the technical problems in the prior art that the connection operation between the steel truss and the bottom plate is complicated and the fixing effect is poor.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a connector for an assembled steel bar truss, including a connecting block, two first limiting protrusions, two second limiting protrusions and a plurality of fasteners; the lower end of the connecting block is provided with a plurality of connecting holes, the upper end of the connecting block is provided with an avoidance groove and two grooves which are respectively provided on both sides of the groove bottom surface of the avoidance groove and are recessed downward, the avoidance groove and the grooves both vertically penetrate the connecting block; the two first limiting protrusions are both provided on the upper sides of the two inner walls of the avoidance groove and extend inwardly in the transverse direction, the first limiting protrusion is located above the corresponding groove, and the A first channel is provided between the first limiting protrusion and the bottom surface of the avoidance groove; the two second limiting protrusions are respectively installed on the upper sides of the inner walls of the two grooves, and are respectively arranged alternately above and below the corresponding first limiting protrusions; a second channel and a third channel are respectively provided between the second limiting protrusion and the other inner wall and the bottom surface of the groove, and the second limiting protrusion and the groove form a clamping cavity; the steel truss passes through the first channel, the second channel and the third channel in sequence and is clamped in the clamping cavity; the fastener is connected to the connecting hole from the lower end surface of the bottom plate, and is used to be fixedly connected to the connecting block and the bottom plate.

[0005] In a possible implementation, the lower end of the first limiting protrusion close to the avoidance groove is an arc surface, a rounded structure is formed between the first limiting protrusion and the inner wall of the avoidance groove, and a rounded structure is formed between the second limiting protrusion and the inner wall of the groove; the end of the second limiting protrusion close to the other inner wall of the groove is a semicircular structure.

[0006] In a possible implementation, an upper end of one side of the first limiting protrusion close to the center of the avoidance groove is recessed inward to form an inclined surface for installing the steel bar truss, and the inclined surface is arranged tangent to the arc surface.

[0007] In a possible implementation, the length of the first limiting protrusion is greater than the width of the groove, and the length of the second limiting protrusion is greater than half of the width of the groove.

[0008] In a possible implementation manner, the connecting block, the first limiting protrusion, and the second limiting protrusion are integrally formed.

[0009] In a possible implementation manner, the connection block is provided with a plurality of process openings located on both sides of the avoidance groove.

[0010] In a possible implementation, both sides of the lower end of the connecting block are provided with inwardly recessed connecting grooves, and the connecting hole is provided on the bottom surface of the connecting groove; the connector for the assembled steel bar truss also includes two pads with a thickness greater than the depth of the connecting groove, and the two pads are respectively installed in the two connecting grooves, and the pads are provided with a through hole coaxially arranged with the connecting hole, and the fastener passes through the through hole to be connected to the connecting hole.

[0011] In a possible implementation, the connection hole is a screw hole, and the fastener is a bolt.

[0012] In a possible implementation, a reinforcing rib plate is provided on the bottom surface of the avoidance groove, and the reinforcing rib plate is located between the two first limiting protrusions.

[0013] In a possible implementation, there are multiple reinforcing ribs, which are divided into two groups. The two groups of reinforcing ribs are symmetrically arranged on the left and right and correspond to two of the first limiting protrusions respectively; the side of the reinforcing rib plate close to the corresponding first limiting protrusion is provided with an avoidance installation slope.

[0014] The beneficial effect of the connector for the assembled steel bar truss provided by the utility model is that: compared with the prior art, when the connector for the assembled steel bar truss of the utility model is used, multiple groups of through holes are pre-arranged on the bottom plate, and then multiple connectors are installed on the bottom plate; the lower end of the connecting block is butted against the bottom plate, and the connecting hole is coaxially aligned with the through hole, and then a fastener is used to pass through the through hole and connect with the connecting hole to achieve a fixed connection between the connecting block and the bottom plate; then the staff passes the two steel bars on both sides of the lower end of the steel bar truss through the two first channels, the second channel and the third channel respectively, and finally the two steel bars are respectively clamped in the clamping cavity between the second limiting protrusion and the bottom surface of the groove groove, and the second limiting protrusion generates a first layer of limiting fixation for the steel bar, and the first limiting protrusion located above the second limiting protrusion generates a second layer of limiting fixation for the steel bar, so that the fixing effect of the steel bar is better; and when the steel bar is skewed and escapes from the clamping cavity, the steel bar will also be restricted in the second channel or the first channel, and the staff can directly press the steel bar to make the steel bar enter the inside of the clamping cavity; this method will not have cumbersome operations such as spot welding, and it takes less time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A front view of a connector for an assembled steel bar truss provided in an embodiment of the utility model;

[0017] Figure 2 A cross-sectional view of a connector for an assembled steel bar truss provided in an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the connection between the first limiting protrusion, the second limiting protrusion and the connecting block provided in an embodiment of the utility model;

[0019] Figure 4 A top view of a connector for an assembled steel bar truss provided in an embodiment of the utility model;

[0020] Figure 5 A bottom view of a connector for an assembled steel bar truss provided in an embodiment of the utility model.

[0021] Among them, the reference numerals in the figure are:

[0022] 1. Connecting block; 11. Connecting hole; 12. Avoidance groove; 13. Groove; 14. Snap-in cavity; 15. Process opening; 16. Connecting groove; 17. Pad; 18. Through hole; 19. Reinforcement plate; 2. First limiting protrusion; 21. Arc surface; 22. Rounded corner structure; 23. Inclined surface; 3. Second limiting protrusion; 31. Semicircular structure; 4. Fastener; 5. First channel; 51. Second channel; 52. Third channel; 6. Reinforcement rib plate; 61. Avoidance installation slope. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] See also Figures 1 to 5, the connector for assembled steel bar trusses provided by the utility model is now described. A connector for assembled steel bar trusses, comprising a connecting block 1, two first limiting protrusions 2, two second limiting protrusions 3 and a plurality of fasteners 4; a plurality of connecting holes 11 are provided at the lower end of the connecting block 1, an avoidance groove 12 and two grooves 13 which are respectively provided on both sides of the bottom surface of the avoidance groove 12 and are recessed downward, the avoidance groove 12 and the grooves 13 both vertically penetrate the connecting block 1; the two first limiting protrusions 2 are both provided on the upper sides of the two inner walls of the avoidance groove 12, and extend inwardly in the transverse direction, the first limiting protrusion 2 is located above the corresponding groove 13, and the first limiting protrusion 2 and the avoidance groove are aligned with each other. A first channel 5 is provided between the bottom surfaces of the grooves 12; two second limiting protrusions 3 are respectively installed on the upper sides of the inner walls of the two grooves 13, and are respectively arranged alternately above and below the corresponding first limiting protrusions 2; a second channel 51 and a third channel 52 are respectively provided between the second limiting protrusion 3 and the other inner wall and the bottom surface of the groove 13, and the second limiting protrusion 3 and the groove 13 form a clamping cavity 14; the steel truss passes through the first channel 5, the second channel 51 and the third channel 52 in turn and is clamped in the clamping cavity 14; the fastener 4 is connected to the connecting hole 11 from the lower end surface of the bottom plate, and is used to be fixedly connected to the connecting block 1 and the bottom plate.

[0028] Compared with the prior art, the connector for the assembled steel truss provided by the utility model is used in that, when used, multiple groups of through holes are pre-arranged on the bottom plate, and then multiple connectors are installed on the bottom plate; the lower end of the connecting block 1 is butted against the bottom plate, and the connecting hole 11 is coaxially aligned with the through hole, and then the fastener 4 is used to pass through the through hole and connect with the connecting hole 11 to achieve a fixed connection between the connecting block 1 and the bottom plate; then the staff passes the two steel bars on both sides of the lower end of the steel truss through the two first channels 5, the second channel 51 and the third channel 52 respectively, and finally the two steel bars are respectively clamped in the first channel 5, the second channel 51 and the third channel 52. In the clamping cavity 14 between the second limiting protrusion 3 and the bottom surface of the groove 13, the second limiting protrusion 3 produces a first layer of limiting fixation for the steel bar, and the first limiting protrusion 2 located above the second limiting protrusion 3 produces a second layer of limiting fixation for the steel bar, thereby making the steel bar fixing effect better; and when the steel bar is skewed and escapes from the clamping cavity 14, the steel bar will also be restricted by the second channel 51 or the first channel 5, and the staff can directly press the steel bar to make the steel bar enter the inside of the clamping cavity 14; this method does not involve cumbersome operations such as spot welding, and is time-saving.

[0029] The second limiting protrusion 3 is provided with an arc-shaped structure for surrounding the engaging cavity 14 and bending downward.

[0030] See also Figures 1 to 3As a specific embodiment of the connector for the assembled steel bar truss provided by the utility model, the lower end of the first limiting protrusion 2 near the avoidance groove 12 is an arc surface 21, the first limiting protrusion 2 and the inner wall of the avoidance groove 12 are provided with a rounded structure 22, and the second limiting protrusion 3 and the inner wall of the groove 13 are provided with a rounded structure 22; the end of the second limiting protrusion 3 near the other inner wall of the groove 13 is a semicircular structure 31; that is, the connection between the first limiting protrusion 2, the second limiting protrusion 3, the avoidance groove 12, and the groove 13 or the edge thereof is set to an arc surface 21 or a rounded structure 22 or a semicircular structure 31, so that the steel bars on the steel bar truss can smoothly enter the first channel 5, and then along the second channel 51, the third channel 52 and be clamped into the clamping cavity 14, so that the steel bars are not easily stuck.

[0031] See also Figures 1 to 3 As a specific embodiment of the connector for the assembled steel bar truss provided by the utility model, the upper end of the first limiting protrusion 2 near the center of the avoidance groove 12 is recessed inward to form an inclined surface 23 for installing the steel bar truss, and the inclined surface 23 is tangent to the arc surface 21; the inclined surface 23 is arranged on the first limiting protrusion 2, so that the thickness of the first limiting protrusion 2 gradually increases from the center of the entire connection block 1 to the outside, and the first limiting protrusion 2 has a certain elasticity. When the steel bar enters the first channel 5, it is squeezed on the first limiting protrusion 2, causing the first limiting protrusion 2 to bend downward, so that the steel bar smoothly enters the first channel 5 along the inclined surface 23 and the arc surface 21. At the same time, the inclined surface 23 is tangent to the arc surface 21, so that the steel bar moves smoothly and encounters less resistance during the movement along the outer side surface of the first limiting protrusion 2.

[0032] See also Figures 1 to 3 As a specific embodiment of the connector for the assembled steel bar truss provided by the utility model, the length of the first limiting protrusion 2 is greater than the groove width of the groove 13, and the length of the second limiting protrusion 3 is greater than half of the groove width of the groove 13; the first limiting protrusion 2 spans over the groove 13, and has a good limiting effect on the steel bars located in the first channel 5 and the second channel 51, and the second limiting protrusion 3 is arranged to extend outward from the inner wall of the groove 13, and the extension size of the second limiting protrusion 3 is greater than half of the width of the groove 13, so that the clamping cavity 14 formed by the second limiting protrusion 3 can more effectively and securely limit the position of the steel bar, so that the steel bar is not easy to escape from the clamping cavity 14.

[0033] See also Figures 1 to 3As a specific embodiment of the connector for the assembled steel bar truss provided by the utility model, the connecting block 1, the first limiting protrusion 2 and the second limiting protrusion 3 are integrally formed; the connection strength between the connecting block 1, the first limiting protrusion 2 and the second limiting protrusion 3 is improved, so that the first limiting protrusion 2 and the second limiting protrusion 3 can work stably and reliably. In addition, the first limiting protrusion 2 and the connecting block 1 are integrally formed so that the first limiting protrusion 2 has good elasticity.

[0034] See also Figure 2 and Figure 4 As a specific embodiment of the connector for the assembled steel truss provided by the utility model, a plurality of process openings 15 located on both sides of the avoidance groove 12 are provided on the connection block 1; the provision of the process openings 15 can effectively reduce the weight of the connection block 1, and also make the connection block 1 use less material and have lower cost.

[0035] See also Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the connector for the assembled steel bar truss provided by the utility model, both sides of the lower end of the connecting block 1 are provided with inwardly recessed connecting grooves 16, and the connecting hole 11 is provided on the bottom surface of the connecting groove 16; the connector for the assembled steel bar truss also includes two pads 17 with a thickness greater than the depth of the connecting groove 16, and the two pads 17 are respectively installed in the two connecting grooves 16, and the pads 17 are provided with a through hole 18 coaxially arranged with the connecting hole 11, and the fastener 4 passes through the through hole 18 to connect with the connecting hole 11; the connecting block 1 is installed in the connecting groove 16, and the pad 17 is accurately installed with the help of the inner wall of the connecting groove 16, so that the through hole 18 and the connecting hole 11 are accurately coaxially aligned; then the fastener 4 is used to pass through the through hole 18 on the bottom plate and the pad 17 to connect with the connecting hole 11 on the connecting block 1, so as to realize a firmly fixed connection between the connecting block 1 and the bottom plate. At the same time, the contact area with the bottom plate is reduced by means of the cushion block 17, so that the connection block 1 can be installed more accurately, and the connection block 1 is not easily damaged by the force of the fastener 4. A reinforcing plate 19 is arranged at the lower end of the connection block 1, and the reinforcing plate 19 is located between the two connection grooves 16, and the lower end surface of the reinforcing plate 19 is higher than the lower end surface of the cushion block 17.

[0036] See also Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the connector for the assembled steel truss provided by the utility model, the connecting hole 11 is a screw hole, and the fastener 4 is a bolt; when the connecting block 1 is fixedly installed on the base plate, the connecting hole 11 is coaxially aligned with the through hole, and a bolt is used to pass through the through hole 18 on the base plate from bottom to top, and is threadedly connected with the connecting hole 11, so that the connecting block 1 is firmly fixed on the base plate.

[0037] See also Figure 1 , Figure 2 and Figure 4 As a specific implementation of the connector for the assembled steel truss provided by the utility model, a reinforcing rib plate 6 is provided on the bottom surface of the avoidance groove 12, and the reinforcing rib plate 6 is located between the two first limiting protrusions 2; with the help of the reinforcing rib plate 6, the strength and bearing performance of the connecting block 1 after the avoidance groove 12 is opened are enhanced to ensure that the connecting block 1 can work stably after the steel truss is installed.

[0038] See also Figure 1 , Figure 2 and Figure 4 As a specific embodiment of the connector for the assembled steel bar truss provided by the utility model, there are multiple reinforcing rib plates 6, which are divided into two groups. The two groups of reinforcing rib plates 6 are symmetrically arranged on the left and right, and correspond to the two first limiting protrusions 2 respectively; the reinforcing rib plates 6 are provided with an avoidance installation inclined surface 61 on one side close to the corresponding first limiting protrusion 2; the multiple reinforcing rib plates 6 are divided into two groups and are respectively installed on both sides of the bottom surface of the avoidance groove 12, and are respectively arranged close to the two first limiting protrusions 2. There is an installation spacing between the first limiting protrusion 2 and the corresponding reinforcing rib plates 6, so that the steel bars can be smoothly installed into the first channel 5 and the clamping cavity 14. At the same time, an avoidance installation inclined surface 61 is provided on the side of the reinforcing rib plate 6 close to the first limiting protrusion 2, thereby further increasing the installation spacing, making the installation of the steel bars smoother and more convenient.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connector for an assembled steel bar truss, characterized in that: It includes a connecting block, two first limiting protrusions, two second limiting protrusions and a plurality of fasteners; the lower end of the connecting block is provided with a plurality of connecting holes, the upper end of the connecting block is provided with an avoidance groove and two grooves which are respectively provided on both sides of the groove bottom surface of the avoidance groove and are recessed downward, and the avoidance groove and the groove both vertically penetrate the connecting block; the two first limiting protrusions are both provided on the upper sides of the two inner walls of the avoidance groove and extend inwardly in the transverse direction, the first limiting protrusion is located above the corresponding groove, and the first limiting protrusion and the groove bottom surface of the avoidance groove are interlocked. A first channel is provided; two second limiting protrusions are respectively installed on the upper sides of the inner walls of the two grooves, and are respectively arranged alternately above and below the corresponding first limiting protrusions; a second channel and a third channel are respectively provided between the second limiting protrusion and the other inner wall and bottom surface of the groove, and the second limiting protrusion and the groove form a clamping cavity; the steel truss passes through the first channel, the second channel and the third channel in sequence and is clamped in the clamping cavity; the fastener is connected to the connecting hole from the lower end surface of the bottom plate, and is used to be fixedly connected to the connecting block and the bottom plate.

2. The connector for assembled steel bar trusses according to claim 1, characterized in that: The lower end of the first limiting protrusion close to the avoidance groove is an arc surface, the first limiting protrusion and the inner wall of the avoidance groove are rounded structures, and the second limiting protrusion and the inner wall of the groove are rounded structures; the end of the second limiting protrusion close to the other inner wall of the groove is a semicircular structure.

3. The connector for assembled steel bar trusses according to claim 2, characterized in that: The upper end of one side of the first limiting protrusion close to the center of the avoidance groove is recessed inward to form an inclined surface for installing the steel bar truss, and the inclined surface is arranged tangent to the arc surface.

4. The connector for assembled steel bar trusses according to claim 1, characterized in that: The length of the first limiting protrusion is greater than the width of the groove, and the length of the second limiting protrusion is greater than half of the width of the groove.

5. The connector for assembled steel bar trusses according to claim 1, characterized in that: The connecting block, the first limiting protrusion and the second limiting protrusion are integrally formed.

6. The connector for assembled steel bar trusses according to claim 1, characterized in that: The connection block is provided with a plurality of process openings located on both sides of the avoidance groove.

7. The connector for assembled steel bar trusses according to claim 1, characterized in that: Both sides of the lower end of the connecting block are provided with inwardly recessed connecting grooves, and the connecting hole is provided on the bottom surface of the connecting groove; the connector for the assembled steel bar truss also includes two pads with a thickness greater than the depth of the connecting groove, and the two pads are respectively installed in the two connecting grooves, and the pads are provided with a through hole coaxially arranged with the connecting hole, and the fastener passes through the through hole to be connected to the connecting hole.

8. The connector for assembled steel bar trusses according to claim 1, characterized in that: The connecting hole is a screw hole, and the fastener is a bolt.

9. The connector for assembled steel bar trusses according to claim 1, characterized in that: A reinforcing rib plate is provided on the bottom surface of the avoidance groove, and the reinforcing rib plate is located between the two first limiting protrusions.

10. The connector for assembled steel bar trusses according to claim 9, characterized in that: There are multiple reinforcing rib plates, which are divided into two groups. The two groups of reinforcing rib plates are symmetrically arranged on the left and right and correspond to the two first limiting protrusions respectively; the side of the reinforcing rib plate close to the corresponding first limiting protrusion is provided with an avoidance installation inclined surface.

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