A connecting structure of a variable cross-section beam

Abstract

The utility model discloses a connecting structure of variable cross section beam, including variable cross section beam body, the front end of variable cross section beam body is installed with the connecting beam, both sides of variable cross section beam body all are installed with the taper tightening unit, the side away from variable cross section beam body of taper tightening unit is installed with vertical keeping unit, the taper tightening unit includes the locating connecting rod, the outside of locating connecting rod middle part is installed with the many surface tightening seat, the rear end surface of many surface tightening seat is installed with two locating toothed plate, the inside of locating toothed plate is installed with locking knob, both ends of many surface tightening seat all are installed with two contact plate, the side slidingly connected with the connecting column of contact plate away from many surface tightening seat, two taper tightening units and vertical keeping unit all are relative variable cross section beam body symmetrical installation. The utility model has the advantages of: through adopting the connecting mode of self -lock can effectively reduce the installation difficulty of variable cross section beam, avoids the use screw and causes the loosening simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of steel beam structures, and in particular to a connection structure for a variable cross-section beam. Background Technology

[0002] A variable cross-section beam is a bending member whose cross-sectional dimensions vary along the axis. By increasing the cross-section in the high bending moment region and decreasing the cross-section in the low bending moment region, the material distribution is optimized. Its core design principle is the principle of equal strength, so that the maximum normal stress of each cross-section is close to the allowable stress. Compared with a beam with a constant cross-section, a variable cross-section beam saves materials and reduces the weight of the beam itself.

[0003] However, in the existing technology, bolts are usually used to connect and fasten variable cross-section beams, which can easily cause loosening between the beams during long-term use. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a connection structure for a variable cross-section beam. To solve the above technical problem, the technical solution of this utility model is as follows:

[0005] A connection structure for a variable cross-section beam includes a variable cross-section beam body, a connecting beam installed at the front end of the variable cross-section beam body, tapered tightening units installed on both sides of the variable cross-section beam body, a vertical holding unit installed on the side of the tapered tightening unit away from the variable cross-section beam body, the tapered tightening unit including a positioning connecting rod, a multi-faceted tightening seat installed on the outer side of the middle of the positioning connecting rod, two positioning tooth plates installed on the rear end face of the multi-faceted tightening seat, a locking knob installed on the inner side of the positioning tooth plates, two contact plates installed at both the upper and lower ends of the multi-faceted tightening seat, and a connecting column slidably connected to the side of the contact plate away from the multi-faceted tightening seat.

[0006] Preferably, the two tapered tightening units and the vertical holding unit are symmetrically installed relative to the variable cross-section beam. The variable cross-section beam consists of a beam upright and two beam cross plates. The upper and lower ends of the beam upright are fixedly connected to the two beam cross plates. The two beam cross plates are symmetrically installed relative to the beam upright. The rear end face of the connecting beam is in close contact with the front end of the variable cross-section beam.

[0007] Preferably, the vertical holding unit includes guide rods, the connecting beam is threadedly connected to the two guide rods, the outer side of the rear end of the guide rod is slidably connected to a mounting slide, both ends of the mounting slide are fitted with plug sleeves, and the inner sides of the upper and lower ends of each plug sleeve are slidably connected to a connecting plate.

[0008] Preferably, the rear end of the guide rod passes through the connecting beam and is inserted into the inner side of the mounting slide. Both ends of the mounting slide are fixedly connected to two adjacent plug sleeves. The two adjacent connecting plates are installed symmetrically relative to the plug sleeves. The end of the connecting plate away from the plug sleeve is rotatably connected to the connecting column.

[0009] Preferably, the multi-faceted tightening seat is fixedly connected to four contact plates, and two adjacent contact plates and connecting columns are symmetrically installed relative to the positioning connecting rod, with the surface of the connecting column in close contact with the beam cross plate.

[0010] Preferably, the rear end surface of the positioning connecting rod and one end of the positioning toothed plate are provided with multiple positioning teeth. The front end of the positioning connecting rod is fixedly connected to the connecting beam. The rear end of the positioning connecting rod passes through the connecting beam and the multi-faceted tightening seat and is connected to the two adjacent positioning toothed plates through the inter-tooth meshing of multiple positioning teeth. The front end of the locking knob passes through the positioning toothed plate and is connected to the multi-faceted tightening seat by a thread. The rear end of the multi-faceted tightening seat is locked and installed to the two adjacent positioning toothed plates by the locking knob.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. The front end face of the connecting beam is brought into contact with the variable cross-section beam. The rear end of the positioning connecting rod passes through the connecting beam and the multi-faceted tightening seat and is inserted between two adjacent positioning tooth plates. Connecting columns are installed between the beam cross plate and multiple contact plates. The multi-faceted tightening seat is pushed along the axis of the positioning connecting rod. Then, the multi-faceted tightening seat drives multiple connecting columns to slide on both sides of the beam vertical plate through the contact plates, so that the beam cross plate and the contact plates are connected through the connecting columns. At this time, the positioning connecting rod is connected to the two positioning tooth plates through inter-tooth meshing. The positioning tooth plates and the multi-faceted tightening seat are locked by the locking knob, thereby realizing the positioning tooth plates limiting the multi-faceted tightening seat and maintaining the stability of the contact between the connecting column and the beam cross plate.

[0013] 2. Two tapered tightening units can effectively ensure the stable connection between the variable cross-section beam and the connecting beam without changing the cross-section size. The mounting slide is fitted on the outside of the guide rod and slidably connected to the positioning connecting rod. The two plug sleeves maintain a stable distance under the fixed support of the mounting slide. Thus, the two plug sleeves can simultaneously position the four connecting columns. Each plug sleeve is slidably connected to the two adjacent connecting plates. Thus, the plug sleeves and connecting plates can keep the two adjacent connecting columns in a vertical arrangement, avoiding the variable cross-section beam from deflecting relative to the axis of the connecting beam. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2This is a side view of the entire utility model;

[0016] Figure 3 This is a rear view of the entire utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the conical tightening unit of this utility model.

[0018] In the diagram: 1. Connecting beam; 2. Variable cross-section beam; 201. Beam horizontal plate; 202. Beam vertical plate; 3. Conical tightening unit; 301. Positioning connecting rod; 302. Positioning toothed plate; 303. Locking knob; 304. Multi-faceted tightening seat; 305. Contact plate; 306. Connecting column; 4. Vertical holding unit; 401. Mounting slide; 402. Guide rod; 403. Insertion sleeve; 404. Connecting plate. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] like Figure 1 As shown, the connection structure of the variable cross-section beam of this utility model includes a variable cross-section beam body 2, a connecting beam 1 installed at the front end of the variable cross-section beam body 2, and tapered tightening units 3 installed on both sides of the variable cross-section beam body 2. A vertical retaining unit 4 is installed on the side of the tapered tightening unit 3 away from the variable cross-section beam body 2. The two tapered tightening units 3 and the vertical retaining unit 4 are symmetrically installed relative to the variable cross-section beam body 2. The variable cross-section beam body 2 is composed of a beam upright plate 202 and two beam horizontal plates 201. The upper and lower ends of the beam upright plate 202 are fixedly connected to the two beam horizontal plates 201. The two beam horizontal plates 201 are symmetrically installed relative to the beam upright plate 202. The rear end face of the connecting beam 1 is in close contact with the front end of the variable cross-section beam body 2. By distributing the two tapered tightening units 3 and the vertical retaining unit 4 on both sides of the variable cross-section beam body 2, the stability of the connection of the variable cross-section beam body 2 can be effectively maintained.

[0021] As a preferred technical solution in this embodiment, such as Figures 1 to 4As shown, the tapered tightening unit 3 includes a positioning connecting rod 301. The front end of the positioning connecting rod 301 is fixedly connected to the connecting beam 1. A multi-faceted tightening seat 304 is installed on the outer side of the middle part of the positioning connecting rod 301. Two positioning toothed plates 302 are installed on the rear end face of the multi-faceted tightening seat 304. Multiple positioning teeth are provided on the rear end surface of the positioning connecting rod 301 and one end of the positioning toothed plate 302. The rear end of the positioning connecting rod 301 passes through the connecting beam 1 and the multi-faceted tightening seat 304 and connects with the two adjacent positioning teeth. Each plate 302 is connected by multiple positioning teeth that mesh with each other. A locking knob 303 is installed on the inner side of the positioning tooth plate 302. The front end of the locking knob 303 passes through the positioning tooth plate 302 and is connected to the multi-faceted tightening seat 304 by a thread. The rear end of the multi-faceted tightening seat 304 is locked to the two adjacent positioning tooth plates 302 by the locking knob 303, so that the positioning tooth plate 302 limits the multi-faceted tightening seat 304 and keeps the connection column 306 and the beam cross plate 201 in stable contact.

[0022] Two contact plates 305 are installed at both the upper and lower ends of the multi-faceted tightening seat 304. The multi-faceted tightening seat 304 is fixedly connected to the four contact plates 305. A connecting column 306 is slidably connected to the side of the contact plate 305 away from the multi-faceted tightening seat 304. The two adjacent contact plates 305 and the connecting column 306 are symmetrically installed relative to the positioning connecting rod 301. The surface of the connecting column 306 is in close contact with the beam cross plate 201. The two tapered tightening units 3 can effectively meet the stable connection between the variable cross section beam 2 and the connecting beam 1 without changing the cross section size.

[0023] As a preferred technical solution in this embodiment, such as Figures 2 to 4 As shown, the vertical holding unit 4 includes a guide rod 402. The connecting beam 1 is connected to the two guide rods 402 by threads. The outer side of the rear end of the guide rod 402 is slidably connected to the mounting slide 401. The rear end of the guide rod 402 passes through the connecting beam 1 and is inserted into the inner side of the mounting slide 401. Both ends of the mounting slide 401 are equipped with plug sleeves 403. Both ends of the mounting slide 401 are fixedly connected to two adjacent plug sleeves 403. The inner sides of the upper and lower ends of each plug sleeve 403 are slidably connected to a connecting plate 404. Two adjacent connecting plates 404 are symmetrically installed relative to the plug sleeves 403. The end of the connecting plate 404 away from the plug sleeve 403 is rotatably connected to the connecting column 306. The plug sleeves 403 and the connecting plates 404 can keep the two adjacent connecting columns 306 in a vertical arrangement state, avoiding the deflection of the variable cross-section beam 2 relative to the axis of the connecting beam 1.

[0024] In summary: When connecting and installing the variable cross-section beam 2, the front end face of the connecting beam 1 is brought into contact with the variable cross-section beam 2. Then, the two conical tightening units 3 and the vertical holding unit 4 are installed symmetrically relative to the variable cross-section beam 2. Specifically, two multi-faceted tightening seats 304 are placed on both sides of the beam upright plate 202, so that the rear end of the positioning connecting rod 301 passes through the connecting beam 1 and the multi-faceted tightening seat 304 and is inserted between two adjacent positioning tooth plates 302. Connecting columns 306 are installed between the beam horizontal plate 201 and multiple contact plates 305. The multi-faceted tightening seat 304 is pushed along the axis of the positioning connecting rod 301. Then, the multi-faceted tightening seat 304 drives the multiple connecting columns 306 to slide on both sides of the beam upright plate 202 through the contact plates 305, so that the beam horizontal plate 201 and the contact plates 305 are connected through the connecting columns 306.

[0025] At this time, the positioning connecting rod 301 is connected to the two positioning tooth plates 302 through inter-tooth meshing, and the positioning tooth plate 302 and the multi-faceted tightening seat 304 are locked and installed by the locking knob 303, thereby realizing the positioning tooth plate 302 to limit the multi-faceted tightening seat 304, keeping the connection column 306 and the beam cross plate 201 in stable contact. At the same time, the front end of the positioning connecting rod 301 is fixedly connected to the connecting beam 1, and the two conical tightening units 3 can effectively meet the stable connection between the variable cross section beam 2 and the connecting beam 1 without changing the cross section size.

[0026] The mounting slide 401 is fitted onto the outside of the guide rod 402 and slidably connected to the positioning connecting rod 301. The two plug sleeves 403 maintain a stable distance under the fixed support of the mounting slide 401, so that the two plug sleeves 403 can simultaneously position the four connecting columns 306. Each plug sleeve 403 is slidably connected to the two adjacent connecting plates 404, so that the plug sleeves 403 and the connecting plates 404 can keep the two adjacent connecting columns 306 in a vertical arrangement, thus preventing the variable cross-section beam 2 from deflecting relative to the axis of the connecting beam 1.

[0027] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A connection structure for a variable cross-section beam, comprising a variable cross-section beam body (2), characterized in that: A connecting beam (1) is installed at the front end of the variable cross-section beam (2). A tapered tightening unit (3) is installed on both sides of the variable cross-section beam (2). A vertical holding unit (4) is installed on the side of the tapered tightening unit (3) away from the variable cross-section beam (2). The tapered tightening unit (3) includes a positioning connecting rod (301). A multi-faceted tightening seat (304) is installed on the outer side of the middle part of the positioning connecting rod (301). Two positioning tooth plates (302) are installed on the rear end face of the multi-faceted tightening seat (304). A locking knob (303) is installed on the inner side of the positioning tooth plate (302). Two contact plates (305) are installed at both the upper and lower ends of the multi-faceted tightening seat (304). A connecting column (306) is slidably connected to the side of the contact plate (305) away from the multi-faceted tightening seat (304).

2. The connection structure of a variable cross-section beam according to claim 1, characterized in that: The two conical tightening units (3) and the vertical holding unit (4) are symmetrically installed relative to the variable cross-section beam (2). The variable cross-section beam (2) is composed of a beam upright plate (202) and two beam horizontal plates (201). The upper and lower ends of the beam upright plate (202) are fixedly connected to the two beam horizontal plates (201). The two beam horizontal plates (201) are symmetrically installed relative to the beam upright plate (202). The rear end face of the connecting beam (1) is in close contact with the front end of the variable cross-section beam (2).

3. The connection structure of a variable cross-section beam according to claim 2, characterized in that: The vertical holding unit (4) includes a guide rod (402). The connecting beam (1) is connected to the two guide rods (402) by a thread. The outer side of the rear end of the guide rod (402) is slidably connected to a mounting slide (401). Both ends of the mounting slide (401) are equipped with plug sleeves (403). The inner sides of the upper and lower ends of each plug sleeve (403) are slidably connected to a connecting plate (404).

4. The connection structure of a variable cross-section beam according to claim 3, characterized in that: The rear end of the guide rod (402) passes through the connecting beam (1) and is inserted into the inner side of the mounting slide (401). Both ends of the mounting slide (401) are fixedly connected to two adjacent plug sleeves (403). The two adjacent connecting plates (404) are symmetrically installed relative to the plug sleeves (403). The end of the connecting plate (404) away from the plug sleeves (403) is rotatably connected to the connecting column (306).

5. The connection structure of a variable cross-section beam according to claim 4, characterized in that: The multi-faceted tightening seat (304) is fixedly connected to four contact plates (305). Two adjacent contact plates (305) and connecting columns (306) are symmetrically installed relative to the positioning connecting rod (301). The surface of the connecting column (306) is in contact with the beam cross plate (201).

6. The connection structure of a variable cross-section beam according to claim 5, characterized in that: The rear end surface of the positioning connecting rod (301) and one end of the positioning tooth plate (302) are provided with multiple positioning teeth. The front end of the positioning connecting rod (301) is fixedly connected to the connecting beam (1). The rear end of the positioning connecting rod (301) passes through the connecting beam (1) and the multi-faceted tightening seat (304) and is connected to the two adjacent positioning tooth plates (302) through multiple positioning teeth meshing with each other. The front end of the locking knob (303) passes through the positioning tooth plate (302) and is connected to the multi-faceted tightening seat (304) by a thread. The rear end of the multi-faceted tightening seat (304) is locked and installed to the two adjacent positioning tooth plates (302) by the locking knob (303).

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