Double joist

Abstract

The invention relates to a double joist, and relates to the field of building components, the double joist comprises two beam bodies, each beam body comprises a vertical plate and a transverse plate connected with the upper surface and the lower surface of the vertical plate, a plurality of screws are inserted into the two beam bodies jointly, sleeves sleeve the screws, and nuts are in threaded connection with the two ends of the screws; clamping pieces for limiting the nuts are slidably connected to the side walls, away from each other, of the two vertical plates. The upper transverse plates are each connected with a circle of ring steel, the upper surfaces of the upper transverse plates are rotationally connected with gears located in the ring steel, the clamping pieces are connected with vertically-arranged transmission racks, the transmission gears penetrate through the upper transverse plates and are meshed with the gears, driving racks penetrate through the upper transverse plates and are slidably connected with the upper transverse plates in an inserted mode, and the driving racks are located between the two vertical plates. The driving rack is also meshed with the gear, a driving assembly for driving the driving rack to move in the vertical direction is arranged on the sleeve, and the driving assembly has a self-locking function. The double-joist structure has the effect that the double-joist structure is more stable.

Description

Technical Field

[0001] This application relates to the field of building components, and in particular to a double-bracing beam. Background Technology

[0002] Double-beam support is a common building component in factories. It typically consists of two parallel I-beam bodies connected and fixed together by three sets of bolts and nuts. The three sets of bolts and nuts are arranged along the length of the beam body, with each bolt corresponding to two nuts. The bolts pass through both beam bodies, and both ends of the bolts are threaded with nuts. The two beam bodies are located between the two nuts. A sleeve is also fitted on the bolt between the two beam bodies, with both ends of the sleeve contacting the corresponding beam body.

[0003] Since the production environment in the factory is usually vibrating, the beam body, bolts and nuts also vibrate. Under the action of vibration, the nuts may loosen from the bolts, resulting in the instability of the double support beam structure. Summary of the Invention

[0004] To make the double-support beam structure more stable, this application provides a double-support beam.

[0005] This application provides a double-support beam technical solution with the following: A double-support beam includes two parallel I-shaped beam bodies. Each beam body includes a vertical plate and a horizontal plate connecting the upper and lower surfaces of the vertical plate. Multiple screws are inserted into both beam bodies. A sleeve is sleeved on the screw and located between the two beam bodies. Nuts are threaded to both ends of the screws. The two beam bodies are located between two nuts. Clamping elements that limit the nuts are slidably connected to the side walls of the two vertical plates that are far apart from each other. The sliding direction of the clamping elements is set along the vertical direction. Each of the upper horizontal plates is connected to a ring of steel. A gear located in the ring of steel is rotatably connected to the upper surface of the upper horizontal plate. A vertically arranged transmission rack is connected to the clamping component. The transmission gear passes through the upper horizontal plate and meshes with the gear. A drive rack corresponding to the transmission rack is passed through and slidably inserted into the upper horizontal plate. The drive rack is located between the two vertical plates and also meshes with the gear. The sleeve is provided with a drive assembly that drives the drive rack to move vertically. The drive assembly has a self-locking function.

[0006] By adopting the above technical solution, in the initial state, the drive assembly limits the limiting component through the active rack, gear, and driven rack, so that the limiting component is located at the top of the vertical plate, exposing the position where the nut is to be installed on the vertical plate, reducing the possibility of obstructing the installation of the nut; after the bolt, sleeve, and nut are installed, the drive assembly is controlled to work, causing the active rack to move upward, the active rack to drive the gear to mesh, and the gear to drive the transmission rack and the clamping component to move downward until the clamping component moves into place, and the clamping component limits and clamps the nut. At this time, the drive assembly self-locks, so that the clamping component maintains its current position, thereby maintaining the limit on the nut, reducing the possibility of the nut loosening due to vibration of the beam body, screw, and nut, and making the double support beam structure more stable.

[0007] Optionally, the clamping component includes a horizontally arranged support plate, which is slidably connected to the vertical plate, and the sliding direction of the support plate is set along the vertical direction. The support plate is located below the upper horizontal plate, and a side plate is fixedly connected to the side of the support plate away from the vertical plate. The lower surface of the side plate gradually slopes downward in the direction away from the vertical plate.

[0008] By adopting the above technical solution, in the initial state, the support plate and the side plate are close to the upper horizontal plate. When the nut is tightened in place, the end face of the nut away from the vertical plate contacts the inclined lower surface of the side plate, and the end face of the nut away from the vertical plate is located in the middle of the inclined lower surface of the side plate. As the support plate and the side plate move downward, when the side plate moves close to the side wall of the vertical plate and contacts the nut, the side plate and the nut are pressed together, thereby limiting the nut.

[0009] Optionally, a T-shaped slider is fixedly connected to the side wall of the support plate near the vertical plate. The vertical plate has a groove adapted to the slider. The length of the groove is set along the vertical direction, and the slider is slidably inserted into the groove.

[0010] By adopting the above technical solution, the slider and the slide groove cooperate to make the support plate and the vertical plate slide together, so that the support plate and the side plate can slide in the vertical direction.

[0011] Optionally, the drive assembly includes a limiting spring connected to the lower end face of the active rack. The upper end of the limiting spring is fixed to the lower surface of the upper horizontal plate. A hinge rod is hinged to the lower end of the active rack. A connecting block is hinged to the end of the hinge rod away from the active rack. The end of the hinge rod near the connecting block is inclined in a direction away from the vertical plate. A fixing block is slidably connected to the connecting block. The fixing block and the connecting block can move relative to each other in the vertical direction. The fixing block is slidably connected to the sleeve, and the fixing block and the sleeve can move relative to each other in the horizontal direction. A fixing groove adapted to the fixing block is also provided on the sleeve. The fixing block and the fixing groove cooperate to fix the fixing block and the sleeve.

[0012] By adopting the above technical solution, in the initial state, the limiting spring limits the active rack, and the active rack limits the clamping component through the gear and transmission rack, so that the clamping component is located at the upper part of the vertical plate. At this time, the fixing block is not engaged with the fixing groove, and the fixing block is located in the sliding groove. After the screw and nut are installed, the fixing block is moved. The fixing block drives the connecting block and the corresponding end of the hinge rod to move closer to the corresponding vertical plate, so that the end of the hinge rod close to the active rack moves upward. The hinge rod drives the active rack to move upward. The movement of the active rack drives the gear to rotate. The rotation of the gear drives the transmission rack and the clamping component to move downward. When the fixing block moves to be aligned with the fixing groove, the fixing block is pressed down to insert the fixing block into the fixing groove. When the fixing block moves, the fixing block and the connecting block move relative to each other. The fixing block engages with the fixing groove, which can limit the hinge rod, the active rack, the driven rack and the clamping component, and realize the self-locking function of the drive component.

[0013] Optionally, the connecting block is a T-shaped connecting block, and the fixing block has a connecting groove adapted to the connecting block. The length direction of the connecting groove is set in the vertical direction, and the connecting block is slidably inserted into the connecting groove.

[0014] By adopting the above technical solution, the connecting block and the connecting groove cooperate to allow the connecting block and the fixed block to slide together.

[0015] Optionally, the sleeve is provided with a sliding groove that is adapted to the fixing block. The length direction of the sliding groove is set along the arrangement direction of the two beam bodies, and the fixing block is slidably inserted into the sliding groove.

[0016] By adopting the above technical solution, the fixed block and the sliding groove cooperate to make the fixed block and the sleeve slide together.

[0017] Optionally, the fixing block and the fixing groove are interference fit.

[0018] By adopting the above technical solution, the cooperation between the fixing block and the fixing groove is improved, the occurrence of the fixing block disengaging from the fixing groove is reduced, and the drive component can be better self-locked.

[0019] Optionally, a support plate is fixedly connected to the lower end of the active rack. The diameter of the support plate is larger than the outer diameter of the active rack. A limiting spring is sleeved on the active rack, and the lower end of the limiting spring is fixed to the upper surface of the support plate.

[0020] By adopting the above technical solution, the support plate makes the limit spring more evenly stressed. When the limit spring deforms, the active rack can also guide the limit spring, reducing the occurrence of limit spring bending.

[0021] In summary, this application includes at least one of the following beneficial technical effects: By setting up the beam body, vertical plate, horizontal plate, screw, nut, sleeve, clamping parts, transmission rack, gear, drive rack and drive assembly, the structure of the double support beam is made more stable; By setting side plates and support plates, the nut can be tightened and limited. By setting up a hinge rod, connecting block, limit spring, fixing block, and fixing groove, the active rack can be driven to move. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the overall structure of the double-support beam in an embodiment of this application.

[0023] Figure 2 This is a cross-sectional view illustrating the overall structure of the double-beam structure in an embodiment of this application.

[0024] Figure 3 This is a cross-sectional view illustrating the clamping component structure in an embodiment of this application.

[0025] Figure 4 This is a cross-sectional view illustrating the connection relationship between the support plate and the vertical plate in an embodiment of this application.

[0026] Figure 5 This is a cross-sectional view illustrating the structure of the driving component in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Beam body; 11. Horizontal plate; 12. Vertical plate; 121. Slide groove; 2. Sleeve; 21. Sliding groove; 22. Fixing groove; 3. Screw; 31. Nut; 4. Clamping component; 41. Support plate; 411. Slider; 42. Side plate; 5. Ring steel; 6. Transmission rack; 7. Gear; 8. Drive rack; 9. Drive assembly; 91. Support plate; 92. Limiting spring; 93. Hinge rod; 94. Connecting block; 95. Fixing block; 951. Connecting groove. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses a double-support beam. (Refer to...) Figure 1 It includes two parallel I-shaped beam bodies 1, each beam body 1 including two parallel horizontal plates 11; a vertical plate 12 is provided between the two horizontal plates 11, the length directions of the horizontal plates 11 and the vertical plate 12 are consistent, and the upper and lower surfaces of the vertical plate 12 are fixed to the corresponding horizontal plates 11.

[0030] Reference Figure 1 and Figure 2Three sleeves 2 are provided between the two vertical plates 12. The circumferential direction of the sleeves 2 is arranged along the arrangement direction of the two vertical plates 12. The three sleeves 2 are evenly arranged along the length direction of the vertical plates 12. A screw 3 is inserted into the sleeve 2. Both ends of the screw 3 pass through the corresponding vertical plate 12. Both ends of the screw 3 are threaded with nuts 31. The two vertical plates 12 are located between the two nuts 31.

[0031] Reference Figure 3 and Figure 4 Each of the two vertical plates 12 has a locking member 4 slidably connected to its sidewalls away from each other, which is used to tighten and limit the nut 31. The locking member 4 includes a horizontally arranged support plate 41 located between the two horizontal plates 11. A T-shaped slider 411 is fixedly connected to the sidewall of the support plate 41 near the vertical plate 12. The vertical plate 12 has a groove 121 corresponding to the slider 411. The length of the groove 121 is set in the vertical direction. The slider 411 is slidably inserted into the corresponding groove 121. The slider 411 and the groove 121 cooperate to make the support plate 41 and the vertical plate 12 slidably connected. The locking member 4 also includes a side plate 42 fixedly connected to the side of the support plate 41 away from the vertical plate 12. The lower surface of the side plate 42 gradually slopes downward in the direction away from the vertical plate 12. In the initial state, when the nut 31 is tightened in place, the end face of the nut 31 away from the vertical plate 12 is located in the middle of the inclined sidewall of the side plate 42.

[0032] Reference Figure 3 and Figure 4 A ring-shaped steel ring 5 is fixedly connected to the upper surface of the upper horizontal plate 11. A gear 7 corresponding to the sleeve 2 is rotatably connected in the ring steel ring 5. The axial direction of the gear 7 is set along the length direction of the horizontal plate 11. A vertically arranged transmission rack 6 is fixedly connected to each support plate 41. The transmission rack 6 passes through the upper horizontal plate 11 and slides into the horizontal plate 11. The transmission rack 6 meshes with the corresponding gear 7.

[0033] An active rack 8 is slidably inserted into the upper horizontal plate 11, passing through the horizontal plate 11. The active rack 8 is vertically arranged and corresponds one-to-one with the transmission rack 6. The active rack 8 is located on the side of the vertical plate 12 away from the transmission rack 6. The active rack 8 meshes with the gear 7. The active rack 8, gear 7 and transmission rack 6 are all located between the ring steel 5 and do not protrude from the upper surface of the ring steel 5.

[0034] Reference Figure 3 and Figure 5The sleeve 2 is also provided with a drive assembly 9 that drives the active rack 8 to move in the vertical direction. The drive assembly 9 corresponds one-to-one with the active rack 8. The drive assembly 9 includes a support plate 91 fixedly connected to the lower end face of the active rack 8. The diameter of the support plate 91 is larger than the outer circle diameter of the active rack 8. A limit spring 92 is fixedly connected to the upper surface of the support plate 91. The limit spring 92 is sleeved on the active rack 8. The upper end of the limit spring 92 is fixed to the lower surface of the upper horizontal plate 11. The limit spring 92 limits the support plate 91 and the active rack 8, so that the support plate 91 is suspended above the sleeve 2.

[0035] A hinge rod 93 is hinged to the lower surface of the support plate 91. A connecting block 94 is hinged to the end of the hinge rod 93 away from the support plate 91. The connecting block 94 is T-shaped, and a fixing block 95 is slidably connected to the connecting block 94. The fixing block 95 has a connecting groove 951 that matches the connecting block 94. The length direction of the connecting groove 951 is vertical. The connecting block 94 is slidably inserted into the corresponding connecting groove 951. The connection block 94 and the connecting groove 951 cooperate to make the connecting block 94 and the fixing block 95 slide together. The sleeve 2 is provided with a sliding groove 21 that is adapted to the fixing block 95. The length direction of the sliding groove 21 is set along the axial direction of the sleeve 2. The fixing block 95 is slidably inserted into the sliding groove 21. The fixing block 95 and the sliding groove 21 cooperate to enable the fixing block 95 to move along the axial direction of the sleeve 2. The sleeve 2 is also provided with a fixing groove 22 that is adapted to the fixing block 95. The fixing groove 22 is located at one end of the sliding groove 21 near the vertical plate 12. The fixing groove 22 communicates with the sliding groove 21, and the fixing groove 22 and the fixing block 95 are interference fit.

[0036] In the initial state, the limiting spring 92 limits the support plate 91, the driving rack 8, the gear 7, the driven rack, the slider 411, the support plate 41, and the side plate 42, so that the side plate 42 and the support plate 41 are located on the upper part of the vertical plate 12, and the positions of the mounting screw 3 and nut 31 of the vertical plate 12 are exposed, making it convenient for the operator to install the screw 3 and nut 31; the operator inserts the screw 3 into the corresponding sleeve 2, and then uses a tool to tighten a nut 31 on both ends of the screw 3 until the nut 31 is tightened in place.

[0037] After the screw 3 and nut 31 are installed, the end face of nut 31 away from the vertical plate 12 is located in the middle of the inclined lower surface of the side plate 42. The operator moves the fixing block 95 towards the vertical plate 12, so that the fixing block 95 moves along the sliding groove 21. At the same time, the fixing block 95 drives the connecting block 94 and the corresponding end of the hinge rod 93 to move, so that the upper end of the hinge rod 93 rotates upward. The hinge rod 93 pushes the support plate 91 and the active rack 8 to move upward. The movement of the support plate 91 also compresses the limit spring 92.

[0038] As the active rack 8 moves, it drives the gear 7 to rotate. The rotation of the gear 7 drives the transmission rack 6, slider 411, support plate 41, and side plate 42 to move downward. When the vertical side wall of the side plate 42 contacts the end face of the nut 31, the side plate 42, support plate 41, and slider 411 work together to tighten and limit the nut 31, reducing the occurrence of nut 31 loosening due to vibration, thereby making the double support beam structure more stable.

[0039] When the fixing block 95 moves to align with the fixing groove 22, the operator presses the fixing block 95 down, causing the fixing block 95 and the connecting block 94 to move relative to each other in the vertical direction. The fixing block 95 is then inserted into the fixing groove 22. Finally, the fixing block 95 is tapped with a tool to ensure that the fixing block 95 and the fixing groove 22 are properly engaged. The engagement of the fixing block 95 and the fixing groove 22 can limit the movement of the connecting block 94, the support plate 91, the driving rack 8, the gear 7, the driven rack, the slider 411, the support plate 41, and the side plate 42, thereby keeping the side plate 42 in a state of tight restraint against the nut 31, achieving the self-locking function of the drive assembly 9. Since the fixing block 95 and the fixing groove 22 are interference fit, the fixing block 95 and the fixing groove 22 can cooperate better.

[0040] The implementation principle of a double support beam in this application embodiment is as follows: The operator positions the two crossbeams, inserts a screw 3 into each sleeve 2, and screws a nut 31 onto both ends of the screw 3 until the nut 31 is tightened in place. Then, the fixing block 95 is moved. The fixing block 95 drives the side plate 42 to move downward through the hinge rod 93, the support plate 91, the driving rack 8, the gear 7, and the driven rack, so that the side plate 42 abuts against the nut 31. Then, the fixing block 95 is inserted into the fixing groove 22. Finally, the fixing block 95 is tapped into place using a tool.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-support beam, comprising two parallel I-beam bodies (1), each beam body (1) comprising a vertical plate (12) and a horizontal plate (11) connecting the upper and lower surfaces of the vertical plate (12), wherein multiple screws (3) are inserted into both beam bodies (1), and a sleeve (2) located between the two beam bodies (1) is sleeved on the screws (3), and nuts (31) are threaded to both ends of the screws (3), wherein the two beam bodies (1) are located between two nuts (31), characterized in that: Both vertical plates (12) have a locking member (4) that limits the nut (31) on their side walls that are far apart from each other. The sliding direction of the locking member (4) is set in the vertical direction. A ring steel (5) is connected to each of the upper horizontal plates (11). A gear (7) located in the ring steel (5) is rotatably connected to the upper surface of the upper horizontal plate (11). A vertically arranged transmission rack (6) is connected to the clamping part (4). The transmission gear (7) passes through the upper horizontal plate (11) and meshes with the gear (7). An active rack (8) corresponding to the transmission rack (6) is inserted through and slidably inserted into the upper horizontal plate (11). The active rack (8) is located between the two vertical plates (12). The active rack (8) also meshes with the gear (7). The sleeve (2) is provided with a drive assembly (9) that drives the active rack (8) to move in the vertical direction. The drive assembly (9) has a self-locking function.

2. A double support beam according to claim 1, characterized in that: The clamping component (4) includes a horizontally arranged support plate (41), which is slidably connected to the vertical plate (12). The sliding direction of the support plate (41) is set in the vertical direction. The support plate (41) is located below the upper horizontal plate (11). A side plate (42) is fixedly connected to the side of the support plate (41) away from the vertical plate (12). The lower surface of the side plate (42) gradually slopes downward in the direction away from the vertical plate (12).

3. A double-support beam according to claim 2, characterized in that: A T-shaped slider (411) is fixedly connected to the side wall of the support plate (41) near the vertical plate (12). A groove (121) adapted to the slider (411) is provided on the vertical plate (12). The length direction of the groove (121) is set in the vertical direction, and the slider (411) is slidably inserted into the groove (121).

4. A double-support beam according to any one of claims 1 to 3, characterized in that: The drive assembly (9) includes a limiting spring (92) connected to the lower end face of the active rack (8). The upper end of the limiting spring (92) is fixed to the lower surface of the upper horizontal plate (11). The lower end of the active rack (8) is hinged to a hinge rod (93). The end of the hinge rod (93) away from the active rack (8) is hinged to a connecting block (94). The end of the hinge rod (93) near the connecting block (94) is inclined away from the vertical plate (12). A fixing block (95) is slidably connected to the connecting block (94). The fixing block (95) and the connecting block (94) can move relative to each other in the vertical direction. The fixing block (95) is slidably connected to the sleeve (2). The fixing block (95) and the sleeve (2) can move relative to each other in the horizontal direction. The sleeve (2) is also provided with a fixing groove (22) that is adapted to the fixing block (95). The fixing block (95) and the fixing groove (22) cooperate to fix the fixing block (95) and the sleeve (2).

5. A double support beam according to claim 4, characterized in that: The connecting block (94) is a T-shaped connecting block (94), and the fixing block (95) has a connecting groove (951) adapted to the connecting block (94). The length direction of the connecting groove (951) is set in the vertical direction, and the connecting block (94) is slidably inserted into the connecting groove (951).

6. A double support beam according to claim 4, characterized in that: The sleeve (2) is provided with a sliding groove (21) that is adapted to the fixing block (95). The length direction of the sliding groove (21) is set along the arrangement direction of the two beam bodies (1). The fixing block (95) is slidably inserted into the sliding groove (21).

7. A double support beam according to claim 4, characterized in that: The fixing block (95) and the fixing groove (22) are interference fit.

8. A double support beam according to claim 4, characterized in that: The lower end of the active rack (8) is fixedly connected to a support plate (91). The diameter of the support plate (91) is larger than the outer circle diameter of the active rack (8). A limiting spring (92) is sleeved on the active rack (8), and the lower end of the limiting spring (92) is fixed to the upper surface of the support plate (91).

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