Combined channel steel joist

Abstract

The utility model discloses a combined channel steel joist, which belongs to the technical field of building structure, the channel steel joist comprises a channel steel body and a support disc, the two ends of the channel steel body are symmetrically and fixedly provided with casting heads, the casting heads are U-shaped and can be symmetrically clamped on the outer side of the support disc, the two sides of the casting heads are symmetrically provided with first positioning holes, and the first positioning holes are provided with second positioning holes. First positioning holes are symmetrically formed in the channel steel body, second positioning holes matched with the first positioning holes are symmetrically formed in the supporting disc, the first positioning holes and the second positioning holes are fixed through pin plates when being communicated, the channel steel body is higher in strength and safety, a single or double support can be adopted according to different beam loads, the construction flexibility is higher, and disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, and more specifically, to a combined channel steel joist. Background Art

[0002] At present, in the existing combined channel steel joists, such as in the prior art, a double-channel steel conversion support frame structure with the application number 202220284985.5, when the overhang of the square pipe joist plate is too large, it is impossible to carry out back support, resulting in the need to increase the vertical rods at the bottom of the plate. The double-channel steel joist is relatively heavy, and when installing, the double-channel steel must be installed simultaneously. The weight is too large, which is not convenient for workers to carry, and the construction is cumbersome and not easy to disassemble and assemble. Summary of the Utility Model

[0003] In order to make up for the above deficiencies, the utility model provides a combined channel steel joist, aiming to improve the problems that the double-channel steel joist is relatively heavy, the double-channel steel must be installed simultaneously when installing, the weight is too large, which is not convenient for workers to carry, and the construction is cumbersome and not easy to disassemble and assemble.

[0004] The utility model is realized as follows: A combined channel steel joist includes a channel steel body and a support plate. Cast heads are symmetrically and fixedly installed at both ends of the channel steel body. The cast heads are U-shaped and can be symmetrically clamped outside the support plate. First positioning holes are symmetrically arranged on both sides of the cast heads, and second positioning holes matching the first positioning holes are symmetrically arranged on the support plate. When the first positioning holes and the second positioning holes are communicated, they are fixed by a pin plate.

[0005] In the preferred technical solution of the utility model, the support plate is fixedly installed on a vertical rod, and the vertical rods are symmetrically arranged on both sides of the channel steel body.

[0006] In the preferred technical solution of the utility model, an arc groove is symmetrically arranged on one side of the cast head, and the arc groove is slidably connected to the outside of the vertical rod.

[0007] In the preferred technical solution of the utility model, a limiting cavity is arranged inside the cast head. A plug rod is installed in the limiting cavity. A limiting ring is fixedly installed on the outside of the plug rod. The limiting ring is slidably connected to the inner wall of the limiting cavity. A spring is fixedly installed between the limiting ring and one side of the inner wall of the limiting cavity. One end of the plug rod slides through one side of the cast head and is inserted into the pin plate. The other end of the plug rod slides through the other side of the cast head and is fixedly installed with a pulling plate. The spring is sleeved on the outside of the plug rod. A slot matching the plug rod is arranged on one side of the pin plate.

[0008] In the preferred technical solution of the utility model, a circular groove is arranged on one side of the cast head, the pulling plate is slidably installed in the circular groove, and a pulling groove is arranged on one side of the pulling plate.

[0009] In a preferred technical solution of the present utility model, reinforcing ribs are fixedly installed between both sides of the bottom end of the inner wall of the channel steel body and one side of the casting head. The reinforcing ribs are inclined, and the two reinforcing ribs are symmetrically arranged.

[0010] In a preferred technical solution of the present utility model, guide rail plates are symmetrically installed on both sides of the inner wall of the channel steel body. A support plate is slidably installed between the two guide rail plates on each side. A side plate is fixedly installed on one side of the guide rail plate. The side plate and the support plate are fixedly connected by bolts. The support plate is slidably connected to the inner wall of the channel steel body. Threaded holes matching the bolts are symmetrically arranged on the support plate.

[0011] The beneficial effects of the present utility model are as follows: A combined channel steel joist obtained by the above design of the present utility model clamps the casting heads at both ends of the channel steel body on one side of the support disc to connect the first positioning hole and the second positioning hole. Pull the pulling disc to drive the insertion rod to move and contract into the limiting cavity. When the insertion rod moves, the spring is squeezed through the limiting ring. After inserting the pin plate into the first positioning hole and the second positioning hole and then releasing the hand, the elastic force of the spring drives the insertion rod to move through the limiting ring and insert into the insertion slot to fix the pin plate. When it is necessary to strengthen the supporting force, the support plate can be inserted between the guide rail plates and then fixed by bolts. If further reinforcement is required, another channel steel body can be installed on the symmetric side of the support disc. This channel steel body has higher strength and higher safety, and can be supported by a single or double root according to different beam loads, with higher construction flexibility and convenient disassembly and assembly. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 is a schematic structural diagram of a combined channel steel joist provided by an embodiment of the present utility model;

[0014] Figure 2 is a schematic structural diagram of a casting head provided by an embodiment of the present utility model;

[0015] Figure 3 is a schematic internal structure diagram of a limiting cavity provided by an embodiment of the present utility model;

[0016] Figure 4 is a schematic internal structure diagram of a channel steel body provided by an embodiment of the present utility model.

[0017] In the figure: 100 - support plate; 101 - vertical rod; 110 - channel steel body; 120 - casting head; 121 - pin plate; 122 - arc groove; 123 - reinforcing rib; 130 - insertion rod; 131 - limit ring; 132 - spring; 133 - pulling plate; 140 - guide rail plate; 141 - support plate; 142 - side plate; 143 - bolt. Detailed implementation manners

[0018] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1 and Figure 2 The present utility model provides a technical solution: a combined channel steel joist, including a channel steel body 110 and a support plate 100. The support plate 100 is fixedly installed on a vertical rod 101. The vertical rods 101 are symmetrically arranged on both sides of the channel steel body 110. Casting heads 120 are symmetrically and fixedly installed at both ends of the channel steel body 110. The casting heads 120 are U-shaped and can be symmetrically clamped outside the support plate 100. First positioning holes are symmetrically arranged on both sides of the casting head 120. Second positioning holes matching the first positioning holes are symmetrically arranged on the support plate 100. When the first positioning holes and the second positioning holes are communicated, they are fixed by a pin plate 121.

[0020] In some specific implementation schemes, arc grooves 122 are symmetrically arranged on one side of the casting head 120. The arc grooves 122 are slidably connected to the outside of the vertical rod 101. The arrangement of the arc grooves 122 facilitates the cooperation between the casting head 120 and the vertical rod 101 during installation, thereby improving the stability of the channel steel body 110.

[0021] Please refer to Figure 3 , a limiting cavity is arranged inside the casting head 120. An insertion rod 130 is installed in the limiting cavity. A limit ring 131 is fixedly installed on the outside of the insertion rod 130. The limit ring 131 is slidably connected to the inner wall of the limiting cavity. A spring 132 is fixedly installed between the limit ring 131 and one side of the inner wall of the limiting cavity. One end of the insertion rod 130 slidably penetrates through one side of the casting head 120 and is inserted into the pin plate 121. The other end of the insertion rod 130 slidably penetrates through the other side of the casting head 120 and is fixedly installed with a pulling plate 133. The spring 132 is sleeved on the outside of the insertion rod 130. A slot matching the insertion rod 130 is arranged on one side of the pin plate 121.

[0022] In some specific embodiments, a circular groove is provided on one side of the casting head 120. The pulling plate 133 is slidably installed in the circular groove. A pulling groove is provided on one side of the pulling plate 133. The setting of the pulling groove facilitates pulling the pulling plate 133 to drive the insertion rod 130 to move. At the same time, the setting of the insertion rod 130 improves the stability after the pin plate 121 is inserted.

[0023] Please refer to Figure 4 , reinforcing ribs 123 are fixedly installed between the two sides of the bottom end of the inner wall of the channel steel body 110 and one side of the casting head 120. The reinforcing ribs 123 are inclined, and the two reinforcing ribs 123 are symmetrically arranged, which improves the overall stability of the channel steel body 110. Guide plates 140 are symmetrically installed on both sides of the inner wall of the channel steel body 110. A support plate 141 is slidably installed between the two guide plates 140 on each side. A side plate 142 is fixedly installed on one side of the guide plate 140. The side plate 142 and the support plate 141 are fixedly connected by bolts 143. The support plate 141 is slidably connected to the inner wall of the channel steel body 110. Threaded holes matching the bolts 143 are symmetrically arranged on the support plate 141, which can improve the supporting force of the channel steel body 110 according to needs, thereby improving the practicability.

[0024] Working principle: During use, the casting heads 120 at both ends of the channel steel body 110 are stuck on one side of the support plate 100 to connect the first positioning hole and the second positioning hole. Pull the pulling plate 133 to drive the insertion rod 130 to move and contract into the limit cavity. The movement of the insertion rod 130 squeezes the spring 132 through the limit ring 131. After inserting the pin plate 121 into the first positioning hole and the second positioning hole, release the hand. The elastic force of the spring 132 drives the insertion rod 130 to move into the insertion slot through the limit ring 131 to fix the pin plate 121. When stronger support is needed, the support plate 141 can be inserted between the guide plates 140 and then fixed by bolts 143. If further reinforcement is required, another channel steel body 110 can be installed on the symmetric side of the support plate 100.

[0025] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined channel steel joist, characterized in that: It includes a channel steel body and a support plate, wherein casting heads are symmetrically fixedly installed at both ends of the channel steel body, the casting head is U-shaped and can be symmetrically clamped on the outside of the support plate, first positioning holes are symmetrically arranged on both sides of the casting head, and second positioning holes matching the first positioning holes are symmetrically arranged on the support plate, and the first positioning hole and the second positioning hole are fixed by a pin plate when they are connected.

2. A combined channel steel joist according to claim 1, characterized in that: The support plate is fixedly mounted on a vertical rod, and the vertical rod is symmetrically arranged on both sides of the channel steel body.

3. A combined channel steel joist according to claim 2, characterized in that: An arc groove is symmetrically arranged on one side of the casting head, and the arc groove is slidably connected to the outer side of the vertical rod.

4. The combined channel steel joist according to claim 1, characterized in that: A limit cavity is provided inside the casting head, an insert rod is installed in the limit cavity, a limit ring is fixedly installed on the outside of the insert rod, the limit ring is slidably connected to the inner wall of the limit cavity, a spring is fixedly installed between the limit ring and one side of the inner wall of the limit cavity, one end of the insert rod slides through one side of the casting head and is inserted into the pin plate, and the other end of the insert rod slides through the other side of the casting head and a pulling plate is fixedly installed.

5. A combined channel steel joist according to claim 4, characterized in that: A circular groove is arranged on one side of the casting head, and the pulling plate is slidably installed in the circular groove. A pulling groove is arranged on one side of the pulling plate.

6. The combined channel steel joist according to claim 1, characterized in that: Reinforcing ribs are fixedly installed between the two sides of the bottom end of the inner wall of the channel steel body and one side of the casting head.

7. The combined channel steel joist according to claim 1, characterized in that: Guide rail plates are symmetrically installed on both sides of the inner wall of the channel steel body, a support plate is slidably installed between the two guide rail plates on each side, a side plate is fixedly installed on one side of the guide rail plate, and the side plate is fixedly connected to the support plate by bolts.

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