Movable end of steel support and steel structure building

Abstract

The utility model discloses a movable end of a steel support and a steel structure building, and relates to the technical field of steel supports.The movable end of the steel support comprises a movable rod structure and a supporting structure, the movable rod structure comprises an end plate, a screw rod, a first nut and a second nut, the screw rod is connected to the end plate, and the first nut and the second nut are both in threaded fit with the screw rod; the supporting structure comprises a supporting main body and a bearing plate, a butt joint groove is formed in the supporting main body, the bearing plate is connected to the supporting main body and blocks a groove opening of the butt joint groove, a butt joint hole allowing the screw to penetrate through is formed in the bearing plate, and the first nut is used for abutting against the bearing plate when the screw penetrates through the butt joint hole. The second nut is used for abutting against the first nut when the first nut abuts against the bearing plate. The second nut is arranged to abut against the first nut, the first nut is effectively prevented from loosening, the prestress is effectively maintained, the prestress loss of the movable end of the steel support is greatly reduced, and therefore it is guaranteed that the steel support has enough supporting force.

Description

Technical Field

[0001] The utility model relates to the technical field of steel supports, in particular to a flexible end of a steel support and a steel structure building. Background Art

[0002] Steel supports are widely used for support in construction foundation pit projects. In order to ensure that the steel supports have sufficient supporting force, it is usually necessary to apply prestress to the steel supports. After the prestress is applied to the steel supports, the installation of the steel supports is completed by fixing the flexible ends. The flexible ends of existing steel supports are generally fixed with steel wedges, which are compacted and tightened by manually knocking the steel wedges. This fixing method is prone to large prestress loss during installation, resulting in insufficient supporting force of the steel supports. Utility Model Content

[0003] The main purpose of the utility model is to provide a flexible end of a steel support and a steel structure building, aiming to solve the technical problem that the flexible end of the steel support in the prior art is generally fixed with a steel wedge, which is prone to large prestress loss.

[0004] To achieve the above-mentioned purpose, the flexible end of the steel support proposed in the utility model includes a movable rod structure and a support structure, the movable rod structure includes an end plate, a screw, a first nut and a second nut, the screw is connected to the end plate, and the first nut and the second nut are both threadedly matched with the screw; the support structure includes a support body and a pressure plate, the support body is provided with a docking groove, the pressure plate is connected to the support body and blocks the notch of the docking groove, and the pressure plate is provided with a docking hole for the screw to pass through, the first nut is used to abut against the pressure plate when the screw passes through the docking hole, and the second nut is used to abut against the first nut when the first nut is tightly against the pressure plate.

[0005] In one embodiment, the thread direction of the first nut is opposite to the thread direction of the second nut.

[0006] In one embodiment, the movable rod structure includes a guide rod, which is connected to the end plate. The extension direction of the guide rod is the same as the extension direction of the screw rod, and the guide rod is spaced apart from the screw rod. The support structure is provided with a guide groove corresponding to the position of the guide rod.

[0007] In one embodiment, the number of the guide rods and the guide grooves are both two, the two guide rods are arranged in one-to-one correspondence with the two guide grooves, the two guide rods are respectively arranged on both sides of the screw rod, and the two guide grooves are respectively located on both sides of the docking groove.

[0008] In one embodiment, a first reinforcing rib is provided between the end plate and each of the guide rods.

[0009] In one embodiment, the length of each guide rod is greater than the length of the screw rod, and one end of the two guide rods away from the end plate is commonly connected to an anti-slip plate.

[0010] In one embodiment, a plurality of reinforcing plates are connected to a side of the pressure plate facing away from the first nut, each of the reinforcing plates is consistent with an extension direction of the screw rod, and the plurality of reinforcing plates are arranged at intervals.

[0011] In one embodiment, the pressure plate is connected to one end of the support body, and a flange is provided at the other end of the support body away from the pressure plate.

[0012] In one embodiment, the edge of the flange extends out of the supporting body, and a second reinforcing rib is disposed between the edge of the flange and the side wall of the supporting body.

[0013] The utility model also provides a steel structure building, which is applied with the above-mentioned flexible end of the steel support.

[0014] The flexible end of the steel support and the steel structure building proposed by the utility model are provided with a screw rod and a first nut sleeved on the screw rod on the movable rod structure, and a pressure plate and a docking groove for the screw rod to be inserted are correspondingly provided on the support structure, so that after the support structure is prestressed, the first nut is pressed against the pressure plate, thereby keeping the movable rod structure and the support structure fixed. By setting the second nut to press against the first nut, the first nut is effectively prevented from loosening, the prestress is effectively maintained, and the prestress loss of the flexible end of the steel support is greatly reduced, thereby ensuring that the steel support has sufficient supporting force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 A structural schematic diagram of an embodiment of a flexible end of a steel support provided by the utility model;

[0017] Figure 2 A structural schematic diagram of an embodiment of a movable rod structure of a movable end of a steel support provided by the utility model;

[0018] Figure 3 for Figure 1 Structural diagram of the AA section;

[0019] Figure 4 for Figure 1 Schematic diagram of the structure of the BB section.

[0020] Description of Figure Numbers:

[0021] 10. movable rod structure; 11. end plate; 12. screw rod; 13. first nut; 14. second nut; 15. guide rod; 16. first reinforcing rib; 17. anti-slip plate;

[0022] 20. Support structure; 21. Support body; 211. Docking groove; 22. Pressure plate; 221. Docking hole; 222. Reinforcement plate; 23. Guide groove; 24. Flange; 25. Second reinforcement rib.

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] The utility model proposes a flexible end of a steel support, including a movable rod structure 10 and a support structure 20, the movable rod structure 10 includes an end plate 11, a screw rod 12, a first nut 13 and a second nut 14, the screw rod 12 is connected to the end plate 11, and the first nut 13 and the second nut 14 are both threadedly matched with the screw rod 12; the support structure 20 includes a support body 21 and a pressure plate 22, a docking groove 211 is provided on the support body 21, the pressure plate 22 is connected to the support body 21 and the notch of the docking groove 211 is blocked, and a docking hole 221 for the screw rod 12 to pass through is provided on the pressure plate 22, the first nut 13 is used to abut against the pressure plate 22 when the screw rod 12 passes through the docking hole 221, and the second nut 14 is used to abut against the first nut 13 when the first nut 13 abuts against the pressure plate 22.

[0028] See also Figure 1 When fixing the flexible end of the steel support proposed by the utility model, the end plate 11 is firstly abutted against the external structure, so that the screw rod 12 passes through the docking hole 221 and extends into the docking groove 211, and the first nut 13 and the second nut 14 are both sleeved on the screw rod 12 and threadedly matched with the screw rod 12. By applying prestress to the support structure 20, the first nut 13 is pressed against the pressure plate 22, thereby ensuring that the movable rod structure 10 and the support structure 20 are fixed to each other. By rotating the first nut 13, the length of the screw rod 12 extending into the docking groove 211 can be adjusted, so as to adjust the distance between the movable rod structure 10 and the support structure 20. When the first nut 13 is pressed against the pressure plate 22, the second nut 14 is rotated so that the second nut 14 is pressed against the side of the first nut 13 away from the pressure plate 22 to provide additional tightening force and supporting force.

[0029] The flexible end of the steel support proposed in the utility model is provided with a screw rod 12 and a first nut 13 sleeved on the screw rod 12 on the movable rod structure 10, and a pressure plate 22 and a docking groove 211 for the screw rod 12 to be inserted are correspondingly provided on the support structure 20, so that after the support structure 20 is prestressed, the first nut 13 is pressed against the pressure plate 22, so that the movable rod structure 10 and the support structure 20 are kept fixed. By providing a second nut 14 to press against the first nut 13, the first nut 13 is effectively prevented from loosening, the prestress is effectively maintained, and the prestress loss of the flexible end of the steel support is greatly reduced, thereby ensuring that the steel support has sufficient supporting force.

[0030] In one embodiment, the thread direction of the first nut 13 and the thread direction of the second nut 14 are opposite.

[0031] It can be understood that the first nut 13 bears the prestress on the support structure 20, and the second nut 14 is pressed against the first nut 13 to prevent the first nut 13 from loosening, so that the connecting rod structure and the support structure 20 remain stable. The first nut 13 and the second nut 14 are arranged in opposite directions, and the loosening forces of the first nut 13 and the second nut 14 are in opposite directions, which can prevent the two nuts from loosening at the same time and enhance the self-locking characteristics of the system.

[0032] In one embodiment, the movable rod structure 10 includes a guide rod 15, which is connected to the end plate 11. The extension direction of the guide rod 15 is the same as the extension direction of the screw rod 12, and the guide rod 15 is spaced apart from the screw rod 12. The support structure 20 is provided with a guide groove 23 at the position corresponding to the guide rod 15.

[0033] It can be understood that the guide rod 15 is arranged in parallel with the screw 12 and when the screw 12 extends into the docking groove 211, the guide rod 15 extends into the corresponding guide groove 23 to guide the screw 12. When adjusting the extension length of the screw 12, the screw 12 can be kept moving in a straight line, thereby ensuring that the first nut 13 is in close contact with the pressure plate 22 and reducing the prestress loss.

[0034] In one embodiment, there are two guide rods 15 and two guide grooves 23 , and the two guide rods 15 are arranged in one-to-one correspondence with the two guide grooves 23 . The two guide rods 15 are respectively arranged on both sides of the screw rod 12 , and the two guide grooves 23 are respectively located on both sides of the docking groove 211 .

[0035] See also Figure 3 The two guide rods 15 are respectively located on both sides of the screw rod 12, and the extension direction of each guide rod 15 is the same as that of the screw rod 12. When the screw rod 12 passes through the docking hole 221 and extends into the docking groove 211, the two guide rods 15 extend into the corresponding guide grooves 23 respectively. The two guide rods 15 provide guidance for the screw rod 12, which can ensure that the screw rod 12 extends into the docking groove 211 in a direction perpendicular to the pressure plate 22, improve the docking accuracy between the screw rod 12 and the docking hole 221, and prevent the screw rod 12 from swaying sideways relative to the pressure plate 22, which helps to improve the stability of the active end of the steel support.

[0036] In one embodiment, a first reinforcing rib 16 is provided between the end plate 11 and each guide rod 15. It should be noted that the guide rod 15 extends into the guide groove 23 and abuts against the side wall of the guide groove 23. When the movable rod structure 10 is laterally displaced relative to the support structure 20, the guide rod 15 is subjected to lateral force. The first reinforcing rib 16 is connected between the end plate 11 and the guide rod 15, effectively improving the lateral force bearing capacity of the guide rod 15, so that the movable rod structure 10 and the support structure 20 remain relatively stable.

[0037] In one embodiment, the length of each guide rod 15 is greater than that of the screw rod 12 , and one end of the two guide rods 15 away from the end plate 11 is commonly connected to an anti-drop plate 17 .

[0038] See also Figure 2 The guide rod 15 and the screw rod 12 are both connected to the end plate 11. The length of the guide rod 15 is greater than that of the screw rod 12. When the movable rod structure 10 is connected to the support structure 20, the guide rod 15 first extends into the guide groove 23, and the guide rod 15 provides a guiding effect on the screw rod 12. After the screw rod 12 and the guide rod 15 are connected and fixed, an anti-slip plate 17 is connected between the two guide rods 15, and the two ends of the anti-slip plate 17 extend out of the edges of the two guide rods 15 respectively, and the two guide plates are fixed in the guide groove 23 by the anti-slip plate 17, thereby ensuring that the movable rod structure 10 and the support structure 20 are firmly connected.

[0039] In one embodiment, a plurality of reinforcing plates 222 are connected to a side of the pressure plate 22 away from the first nut 13 , each reinforcing plate 222 extends in the same direction as the screw rod 12 , and the plurality of reinforcing plates 222 are arranged at intervals.

[0040] See also Figure 1 and Figure 4 Each reinforcing plate 222 is perpendicular to the pressure plate 22, each reinforcing plate 222 is located in the docking groove 211, and the side of each reinforcing plate 222 is connected to the side wall of the docking groove 211. Multiple reinforcing plates 222 are connected to the pressure plate 22, and the reinforcing plates 222 are arranged away from the screw rod 12 to provide support for the pressure plate 22 when the first nut 13 abuts against the pressure plate 22, ensuring that the pressure plate 22 is fixedly connected to the support body 21.

[0041] In one embodiment, the pressure plate 22 is connected to one end of the support body 21 , and a flange 24 is provided at the other end of the support body 21 away from the pressure plate 22 .

[0042] See also Figure 1 One end of the support body 21 is connected to the movable rod structure 10, and the other end of the support body 21 can be connected to an external jack through a flange 24 to apply prestress to the support structure 20 through the jack; when the prestress is applied, the jack is removed and connected to the steel support through the flange 24 to ensure that the active end in this technical solution is firmly connected to the steel support to provide support for the steel support.

[0043] In one embodiment, the edge of the flange 24 extends out of the supporting body 21 , and a second reinforcing rib 25 is disposed between the edge of the flange 24 and the side wall of the supporting body 21 .

[0044] Furthermore, a plurality of second reinforcing ribs 25 are provided between the outer side wall of the support body 21 and the edge of the flange 24. The plurality of second reinforcing ribs 25 are arranged circumferentially and spaced apart along the edge of the flange 24, and the extension direction of each second reinforcing rib 25 is consistent with the extension direction of the screw 12. The external jack applies prestress to the support structure 20 by applying pressure to the flange 24, and the plurality of second reinforcing ribs 25 provide support to the flange 24 to ensure that the flange 24 is firmly connected to the support body 21.

[0045] The utility model also proposes a steel structure building, which includes the above-mentioned flexible end of the steel support. The specific structure of the flexible end of the steel support refers to the above-mentioned embodiment. Since the steel structure building adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0046] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A flexible end of a steel support, characterized in that: include: A movable rod structure, the movable rod structure comprising an end plate, a screw rod, a first nut and a second nut, the screw rod being connected to the end plate, the first nut and the second nut both being matched with the screw rod thread; A supporting structure, the supporting structure includes a supporting body and a pressure plate, the supporting body is provided with a docking groove, the pressure plate is connected to the supporting body and seals the notch of the docking groove, and the pressure plate is provided with a docking hole for the screw to pass through, the first nut is used to abut against the pressure plate when the screw passes through the docking hole, and the second nut is used to abut against the first nut when the first nut is pressed against the pressure plate.

2. The flexible end of the steel support according to claim 1, characterized in that: The thread direction of the first nut is opposite to the thread direction of the second nut.

3. The flexible end of the steel support according to claim 1, characterized in that: The movable rod structure includes a guide rod, which is connected to the end plate. The extension direction of the guide rod is the same as the extension direction of the screw rod, and the guide rod is spaced apart from the screw rod. The support structure is provided with a guide groove corresponding to the position of the guide rod.

4. The flexible end of the steel support as claimed in claim 3, characterized in that: The number of the guide rods and the guide grooves are both two, the two guide rods are arranged in one-to-one correspondence with the two guide grooves, the two guide rods are respectively arranged on both sides of the screw rod, and the two guide grooves are respectively located on both sides of the docking groove.

5. The flexible end of the steel support as claimed in claim 4, characterized in that: A first reinforcing rib is arranged between the end plate and each of the guide rods.

6. The flexible end of the steel support as claimed in claim 4, characterized in that: The length of each guide rod is greater than the length of the screw rod, and one end of the two guide rods away from the end plate is commonly connected to an anti-slip plate.

7. The flexible end of a steel support according to any one of claims 1 to 6, characterized in that: A plurality of reinforcing plates are connected to the side of the pressure plate facing away from the first nut, each reinforcing plate is consistent with the extension direction of the screw rod, and the plurality of reinforcing plates are arranged at intervals.

8. The flexible end of a steel support according to any one of claims 1 to 6, characterized in that: The pressure plate is connected to one end of the support body, and a flange is provided at the other end of the support body away from the pressure plate.

9. The flexible end of the steel support according to claim 8, characterized in that: The edge of the flange extends out of the supporting body, and a second reinforcing rib is arranged between the edge of the flange and the side wall of the supporting body.

10. A steel structure building, characterized in that: A loose end of a steel support as claimed in any one of claims 1 to 9 is used.

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