Cross hinge type metal top beam

Abstract

The utility model relates to a cross hinge type metal top beam which comprises a top beam body and a hydraulic cylinder, a positioning groove is coaxially formed in the top of the top beam body, a connecting rod is fixedly connected to the end of a piston rod of the hydraulic cylinder, an inclined rod is arranged between the hydraulic cylinder and the top beam body, and a connecting block is fixedly connected to the bottom of the inclined rod. A limiting groove is formed in the top of the top beam body, a sliding groove is formed in the inner side wall of the positioning groove, an open groove is formed in the connecting block, a second sliding block is arranged in the sliding groove, a first sliding block is arranged in the sliding groove, the first sliding block and the second sliding block are connected through a spring, and a driving mechanism is arranged in the sliding groove. The bottom of the connecting rod is fixedly connected with a rack. The top beam has the advantages that a worker can conveniently weld the connecting rod, the connecting block and the top beam body together, and the top beam body can be suitable for different heights by controlling the piston rod of the hydraulic cylinder to stretch out or retract back, so that the top beam body is more flexible in use.

Description

Technical Field

[0001] This utility model relates to the field of metal hinge technology, specifically to a cross-hinged metal top beam. Background Technology

[0002] Metal articulated roof beams are typically installed on top of individual support columns, with the beams hinged together to form a load-bearing component for roof protection in coal mining faces. They are mainly used in gently sloping coal seams and coal mining faces with unstable or moderately stable direct roofs, providing a larger working space without support columns. This creates favorable conditions for improving working conditions and adopting new coal mining machinery and flexible conveyors. However, metal articulated roof beams require support columns and locking blocks for support and fixation during use. Previously, the locking blocks were only interlocked with the articulated roof beams, which could easily lead to misalignment and reduce the practicality of the device. Furthermore, the lack of support columns at the bottom of the metal beams makes the spliced ​​joints prone to loosening or deformation under pressure from above, potentially causing significant safety hazards.

[0003] To address these technical issues, existing technology CN221053721U provides a mining metal articulated top beam. Multiple top beam bodies are connected by a locking block embedded in a slot. Simultaneously, a connecting rod is embedded in a recessed groove. As the connecting rod enters the groove, a sliding rod is subjected to force, causing the connecting block to pass through a through hole via a spring. This connects the connecting block to the inner wall of the groove, further enhancing the friction between the connecting rod and the groove, making the connection more stable. The sliding rod is positioned by a slider embedded in the groove, effectively preventing… The anti-slip rod is misaligned, which effectively improves the stability of the sliding rod connection, making the connection of the top beam body more accurate and effectively preventing the top beam body from shifting during connection. The bottom of the top beam body is supported by hydraulic rods, which are positioned by being embedded in the positioning groove through support blocks. At the same time, the support plate is limited by being embedded in the limiting groove through support rods. This makes the support rods, hydraulic rods and top beam body form a triangle. The triangle has stability. Therefore, the support rods and support plates support the bottom of the top beam body, effectively preventing the top beam body from loosening and deforming during use, making the device more stable during use.

[0004] However, there are also some technical problems in its use. For example, when fixing the main body of the top beam to the hydraulic cylinder, the support block needs to be embedded into the positioning groove and the support plate needs to be embedded into the limiting groove so that the bottom of the support plate is flush with the top of the main body of the top beam. Then, the support block and the main body of the top beam are fixed together by welding. However, this welding method often requires the workers to lift the main body of the top beam so that the support plate and the support block can be located in the limiting groove and the positioning groove during the welding process. This may cause inconvenience for the workers when welding the support plate and the support block to the main body of the top beam. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a cross-hinged metal top beam that not only facilitates the welding of connecting rods and connecting blocks to the main body of the top beam, but also allows the main body of the top beam to extend or retract by controlling the piston rod of the hydraulic cylinder, making it suitable for different heights and thus making the main body of the top beam more flexible in use.

[0006] This utility model is achieved through the following technical solution: a cross-hinged metal top beam is provided, including a top beam body and a hydraulic cylinder located above the top beam body. A positioning groove is coaxially formed on the top of the top beam body. A connecting rod adapted to the positioning groove is fixedly connected to the end of the piston rod of the hydraulic cylinder. An inclined rod, fixed to the outer wall of the connecting rod, is provided between the hydraulic cylinder and the top beam body. A connecting block is fixedly connected to the bottom of the inclined rod. A limiting groove adapted to the connecting block is formed on the top of the top beam body. A sliding groove extending laterally away from the connecting rod and communicating with the limiting groove is formed on the inner wall of the positioning groove. A slot is formed on the side wall of the connecting block facing the positioning groove. A second slider adapted to the slot on the connecting block is provided in the sliding groove. A first slider located on the side of the second slider away from the limiting groove is provided in the sliding groove. The first slider and the second slider are connected by a spring. A driving mechanism for moving the first slider towards the limiting groove is provided in the sliding groove. A rack adapted to the gear in the driving mechanism is fixedly connected to the bottom of the connecting rod.

[0007] In use, this utility model comprises a main beam and a hydraulic cylinder located above it. A positioning groove is coaxially formed on the top of the main beam. A connecting rod adapted to the positioning groove is fixedly connected to the end of the hydraulic cylinder piston rod. An inclined rod, fixed to the outer wall of the connecting rod, is provided between the hydraulic cylinder and the main beam. A connecting block is fixedly connected to the bottom of the inclined rod. A limiting groove adapted to the connecting block is formed on the top of the main beam. A sliding groove extending laterally away from the connecting rod and communicating with the limiting groove is formed on the inner wall of the positioning groove. A slot is formed on the side wall of the connecting block facing the positioning groove. A second sliding groove adapted to the slot on the connecting block is provided in the sliding groove. The device consists of a block and a sliding groove containing a first slider located on the side of the second slider away from the limiting groove. The first slider and the second slider are connected by a spring. A drive mechanism is installed within the sliding groove to move the first slider toward the limiting groove. A rack, compatible with the gear in the drive mechanism, is fixedly connected to the bottom of the connecting rod. In operation, by controlling the top beam to move upwards, the connecting block is first inserted into the limiting groove, thus blocking the opening of the sliding groove within the limiting groove. Then, by continuing to control the top beam to move upwards, the connecting block moves within the limiting groove, causing the rack at the bottom of the connecting rod to enter the positioning groove and engage with the gear in the drive mechanism. When the gears mesh, as the main body of the top beam continues to move upward, the rack drives the gear meshing with it to rotate downward, causing the first slider to move towards the limiting groove. Through the spring's transmission, this pushes the second slider also towards the limiting groove, pressing it against the connecting block and compressing the spring. When the connecting block presses against the bottom wall of the limiting groove, the connecting rod enters the positioning groove, and the slot coincides with the opening of the slide groove away from the positioning groove. At this point, the second slider loses its thrust away from the limiting groove, and the end of the second slider away from the positioning groove moves away from the positioning groove under the spring's push, entering the connecting block. The groove is designed to fix the connecting rod to the main body of the top beam, making it easier for workers to weld the connecting rod to the main body of the top beam later. By controlling the extension or retraction of the piston rod of the hydraulic cylinder, the main body of the top beam can be adapted to different heights. The connecting rod and the main body of the top beam can be fixed together by the diagonal rod, the connecting block and the second slider, which improves the stability of the device during use. This not only makes it easier for workers to weld the connecting rod and the connecting block to the main body of the top beam, but also allows the main body of the top beam to be adapted to different heights by controlling the extension or retraction of the piston rod of the hydraulic cylinder, making the main body of the top beam more flexible during use.

[0008] Preferably, the cross-section of the main body of the top beam is cross-shaped, and four diagonal braces are provided on the outer wall of the connecting rod, with the four diagonal braces evenly distributed along the circumference of the connecting rod. The cross-section of the main body of the top beam and the four diagonal braces evenly distributed along the circumference of the connecting rod improve the stability between the main body of the top beam and the connecting rod during use.

[0009] Preferably, the driving mechanism includes a crossbar disposed in the slide groove and hinged to the side wall of the first slider away from the spring. A gear extending vertically is rotatably connected to the inner side wall of the slide groove via a rotating shaft. A rotating rod located on the side wall of the gear away from the rotating shaft and rotatably connected to the crossbar is hinged to the side wall of the gear away from the rotating shaft. The end of the gear away from the first slider is located in the positioning groove. The driving mechanism includes a crossbar hinged to the side wall of the first slider away from the spring, located within a slide groove. A gear extending vertically is rotatably connected to the inner wall of the slide groove via a rotating shaft. A rotating rod is hinged to the side wall of the gear away from the rotating shaft, located on the side of the rotating shaft away from the first slider and rotatably connected to the crossbar. The end of the gear away from the first slider is located in a positioning groove. During use, as the rack moves downward within the positioning groove, the gear rotates downward around the rotating shaft on the inner wall of the slide groove, causing the rotating rod to move in a circular motion with the gear and the crossbar to move in a circular motion with the rotating rod. This causes the end of the crossbar away from the limiting groove to move from the side of the rotating shaft away from the first slider to the side of the rotating shaft facing the first slider. Consequently, the crossbar rotates on the side wall of the first slider away from the spring, pushing the first slider to move towards the limiting groove within the slide groove. This causes the second slider to also move towards the limiting groove within the slide groove via the spring and press against the connecting block.

[0010] Preferably, the piston rod of the hydraulic cylinder is coaxial with the connecting rod. By making the piston rod of the hydraulic cylinder coaxial with the connecting rod, it is convenient for the hydraulic cylinder to drive the connecting rod to move up and down.

[0011] Preferably, the top beam body has locking blocks fixed at both ends, and locking grooves are provided at the other two ends of the top beam body. Through holes are provided on the left and right inner sidewalls of the locking grooves. Connecting holes adapted to the through holes are provided on the locking blocks. Connecting holes located on the upper and lower sides of the through holes are provided at the other two ends of the top beam body. Insert rods adapted to the connecting holes are fixed at both ends of the top beam body. The device consists of two main beams with locking blocks fixed to both ends and locking slots at the other ends. Through holes are formed on the inner walls of the locking slots, and connecting holes that match the through holes are formed on the locking blocks. Connecting holes that match the connecting holes are formed on the other ends of the main beams. Insert rods that match the connecting holes are fixed to both ends of the main beams. In use, the device is assembled by inserting the insert rod at one end of one main beam into the connecting hole at the other main beam, thereby extending the locking block at one end of one main beam into the locking slot. Then, the pin is passed through the through hole and the connecting hole to assemble the two main beams together.

[0012] The beneficial effects of this utility model are as follows: A top beam body and a hydraulic cylinder located above the top beam body are provided. A positioning groove is coaxially formed on the top of the top beam body. A connecting rod adapted to the positioning groove is fixedly connected to the end of the piston rod of the hydraulic cylinder. An inclined rod is provided between the hydraulic cylinder and the top beam body, and is fixedly connected to the outer wall of the connecting rod. A connecting block is fixedly connected to the bottom of the inclined rod. A limiting groove adapted to the connecting block is formed on the top of the top beam body. A sliding groove extending laterally away from the connecting rod and communicating with the limiting groove is formed on the inner wall of the positioning groove. A slot is formed on the side wall of the connecting block facing the positioning groove. A second sliding groove adapted to the slot on the connecting block is provided in the sliding groove. The device consists of a block and a sliding groove containing a first slider located on the side of the second slider away from the limiting groove. The first slider and the second slider are connected by a spring. A drive mechanism is installed within the sliding groove to move the first slider toward the limiting groove. A rack, compatible with the gear in the drive mechanism, is fixedly connected to the bottom of the connecting rod. In operation, by controlling the top beam to move upwards, the connecting block is first inserted into the limiting groove, thus blocking the opening of the sliding groove within the limiting groove. Then, by continuing to control the top beam to move upwards, the connecting block moves within the limiting groove, causing the rack at the bottom of the connecting rod to enter the positioning groove and engage with the gear in the drive mechanism. When the gears mesh, as the main body of the top beam continues to move upward, the rack drives the gear meshing with it to rotate downward, causing the first slider to move towards the limiting groove. Through the spring's transmission, this pushes the second slider also towards the limiting groove, pressing it against the connecting block and compressing the spring. When the connecting block presses against the bottom wall of the limiting groove, the connecting rod enters the positioning groove, and the slot coincides with the opening of the slide groove away from the positioning groove. At this point, the second slider loses its thrust away from the limiting groove, and the end of the second slider away from the positioning groove moves away from the positioning groove under the spring's push, entering the connecting block. The groove is designed to fix the connecting rod to the main body of the top beam, making it easier for workers to weld the connecting rod to the main body of the top beam later. By controlling the extension or retraction of the piston rod of the hydraulic cylinder, the main body of the top beam can be adapted to different heights. The connecting rod and the main body of the top beam can be fixed together by the diagonal rod, the connecting block and the second slider, which improves the stability of the device during use. This not only makes it easier for workers to weld the connecting rod and the connecting block to the main body of the top beam, but also allows the main body of the top beam to be adapted to different heights by controlling the extension or retraction of the piston rod of the hydraulic cylinder, making the main body of the top beam more flexible during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the upper middle component;

[0015] Figure 3 for Figure 2 Perspective view of section A in the middle;

[0016] Figure 4 for Figure 1 Schematic diagram of the lower middle component;

[0017] Figure 5 for Figure 4 Schematic diagram of Part B in the middle section;

[0018] Figure 6 for Figure 4 Structural perspective view;

[0019] Figure 7 for Figure 6 Schematic diagram of the structure of part C;

[0020] Figure 8 for Figure 1 Structural perspective view;

[0021] Figure 9 for Figure 8 Schematic diagram of the structure of part D in the middle;

[0022] Figure 10 for Figure 8 Schematic diagram of the structure of part E in the middle;

[0023] Figure 11 This is a top view of the structure of this utility model;

[0024] As shown in the figure:

[0025] 1. Hydraulic cylinder, 2. Diagonal bar, 3. Connecting block, 4. Rack, 5. Connecting rod, 6. Slot, 7. Connecting hole, 8. Top beam body, 9. Connecting hole, 10. Slot, 11. Slot block, 12. Insert rod, 13. Through hole, 14. Second slider, 15. Crossbar, 16. Slide groove, 17. Positioning groove, 18. Gear, 19. First slider, 20. Spring, 21. Limiting groove, 22. Rotating shaft, 23. Rotating rod. Detailed Implementation

[0026] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0027] like Figures 1-11The cross-hinged metal top beam of this utility model includes a top beam body 8 and a hydraulic cylinder 1 located above the top beam body 8. A positioning groove 17 is coaxially formed on the top of the top beam body 8. A connecting rod 5, adapted to the positioning groove 17, is fixedly connected to the piston rod end of the hydraulic cylinder 1. An inclined rod 2, fixedly connected to the outer wall of the connecting rod 5, is provided between the hydraulic cylinder 1 and the top beam body 8. A connecting block 3 is fixedly connected to the bottom of the inclined rod 2. A limiting groove 21, adapted to the connecting block 3, is formed on the top of the top beam body 8. A laterally extending groove is formed on the inner wall of the positioning groove 17, moving away from the connecting rod 5. The sliding groove 16 is connected to the limiting groove 21. The connecting block 3 has a slot 6 on its side wall facing the positioning groove 17. A second slider 14 adapted to the slot 6 on the connecting block 3 is provided in the sliding groove 16. A first slider 19 located on the side of the second slider 14 away from the limiting groove 21 is provided in the sliding groove 16. The first slider 19 and the second slider 14 are connected by a spring 20. A driving mechanism is provided in the sliding groove 16 to move the first slider 19 toward the limiting groove 21. A rack 4 adapted to the gear 18 in the driving mechanism is fixed to the bottom of the connecting rod 5.

[0028] The top beam body 8 has a cross-shaped cross section. Four diagonal bars 2 are provided on the outer wall of the connecting rod 5. The four diagonal bars 2 are evenly distributed along the circumference of the connecting rod 5, which can improve the stability between the top beam body 8 and the connecting rod 5 during use. The driving mechanism includes a crossbar 15 set in the slide groove 16 and hinged to the side wall of the first slider 19 away from the spring 20. A gear 18 extending vertically is rotatably connected to the inner wall of the slide groove 16 via a rotating shaft 22. A rotating rod 23 located on the side wall of the gear 18 away from the rotating shaft 22 and rotatably connected to the crossbar 15 is hinged to the side wall of the gear 18 away from the rotating shaft 22. The end of the gear 18 away from the first slider 19 is located in the positioning groove 17. During use, as the rack 4 moves downward in the positioning groove 17, the gear 18 will move around the rotating shaft 22 inside the slide groove 16 along with the rack 4. The wall rotates downwards, causing the rotating rod 23 to rotate in a circular motion with the gear 18, and causing the crossbar 15 to rotate in a circular motion with the rotating rod 23. This causes the end of the crossbar 15 away from the limiting groove 21 to move from the side of the rotating shaft 22 away from the first slider 19 to the side of the rotating shaft 22 facing the first slider 19. This causes the crossbar 15 to rotate on the side wall of the first slider 19 away from the spring 20, pushing the first slider 19 to move towards the limiting groove 21 in the slide groove 16. This causes the second slider 14 to also move towards the limiting groove 21 in the slide groove 16 via the transmission of the spring 20, and press against the connecting block 3. By making the piston rod of the hydraulic cylinder 1 coaxial with the connecting rod 5, it is convenient for the hydraulic cylinder 1 to drive the connecting rod 5 to move up and down. By fixing locking blocks 11 to both ends of the main body 8, and opening locking grooves 10 at the other two ends of the main body 8, through holes 13 are opened on the left and right inner side walls of the locking grooves 10, and connecting holes 7 adapted to the through holes 13 are opened on the locking blocks 11. Connecting holes 9 located on the upper and lower sides of the through holes 13 are opened at the other two ends of the main body 8, and insert rods 12 adapted to the connecting holes 9 are fixed to both ends of the main body 8. When the device is in use, the insert rod 12 at one end of the main body 8 is inserted into the connecting hole 9 at one end of the other main body 8, so that the locking block 11 at one end of the main body 8 extends into the locking groove 10. Then, the pin is passed through the through holes 13 and the connecting holes 7, so that the two main bodies 8 are assembled together.

[0029] Combined with appendix Figure 1-11As can be seen, the method of using this utility model is as follows: By controlling the top beam body 8 to move upward, the connecting block 3 is first inserted into the limiting groove 21, thereby blocking the opening of the sliding groove 16 in the limiting groove 21. Then, the top beam body 8 is continued to move upward, so that while the connecting block 3 moves in the limiting groove 21, the rack 4 at the bottom of the connecting rod 5 enters the positioning groove 17 and meshes with the gear 18 in the drive mechanism. At this time, because the top beam body 8 is still moving upward, the rack 4 will drive the gear 18 meshing with it to rotate downward, thereby making... The rotating rod 23 moves in a circular motion with the gear 18, causing the crossbar 15 to move in a circular motion with the rotating rod 23. This causes the end of the crossbar 15 away from the limiting groove 21 to move from the side of the rotating shaft 22 away from the first slider 19 to the side of the rotating shaft 22 facing the first slider 19. This causes the crossbar 15 to rotate on the side wall of the first slider 19 away from the spring 20, pushing the first slider 19 to move towards the limiting groove 21 within the slide groove 16. This causes the second slider 14 to also move towards the limiting groove 21 within the slide groove 16 via the transmission of the spring 20, pressing against the connecting block 3 and thus acting on the spring 20. When the connecting block 3 is pressed against the bottom wall of the limiting groove 21, the connecting rod 5 enters the positioning groove 17. The slot 6 also coincides with the opening of the slide groove 16 away from the positioning groove 17. At this time, the second slider 14 loses its thrust in the direction away from the limiting groove 21. The end of the second slider 14 away from the positioning groove 17 will move in the direction away from the positioning groove 17 under the push of the spring 20 and enter the slot 6 of the connecting block 3. This fixes the connecting rod 5 and the top beam body 8 together first, making it easier for the workers to weld the connecting rod 5 and the top beam body 8 together later. The piston rod of the cylinder 1 can extend or retract to make the top beam body 8 suitable for different heights. The connecting rod 5 and the top beam body 8 can be fixed together by the inclined rod 2, the connecting block 3 and the second slider 14 to form a triangular support structure, which improves the stability of the device during use. If you want to assemble the two top beam bodies 8 together, insert the insert rod 12 at one end of one top beam body 8 into the connecting hole 9 at one end of the other top beam body 8, so that the locking block 11 at one end of one top beam body 8 extends into the locking groove 10. Then, the pin is passed through the through hole 13 and the connecting hole 7.

[0030] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A cross-hinged metal roof beam comprising a roof beam body (8) and a hydraulic cylinder (1) located above the roof beam body, characterized in that: The top beam body top is coaxially provided with a positioning groove (17), the piston rod end of the hydraulic cylinder is fixedly connected with a connecting rod (5) matched with the positioning groove, the hydraulic cylinder and the top beam body are provided with an inclined rod (2) fixedly connected with the outer side wall of the connecting rod, the bottom of the inclined rod is fixedly connected with a connecting block (3), the top of the top beam body is provided with a limiting groove (21) matched with the connecting block, the inner side wall of the positioning groove is provided with a sliding groove (16) extending horizontally away from the connecting rod and communicating with the limiting groove, the side wall of the connecting block away from the positioning groove is provided with a slot (6), the sliding groove is provided with a second sliding block (14) matched with the slot of the connecting block, the sliding groove is provided with a first sliding block (19) on the side away from the limiting groove of the second sliding block, the first sliding block and the second sliding block are connected through a spring (20), the sliding groove is provided with a driving mechanism for moving the first sliding block towards the limiting groove, and the bottom of the connecting rod is fixedly connected with a rack (4) matched with the internal gear of the driving mechanism.

2. The cross-hinged metal roof beam of claim 1, wherein: The cross section of the top beam body is a cross section, the inclined rod is provided with four on the outer side wall of the connecting rod, and the four inclined rods are equidistantly distributed along the circumference of the connecting rod.

3. The cross-hinged metal roof beam of claim 1, wherein: The driving mechanism comprises a cross rod (15) hinged to the side wall of the first sliding block away from the spring and arranged in the sliding groove, a gear (18) extending vertically is rotationally connected to the inner side wall of the sliding groove through a rotating shaft (22), a rotating rod (23) rotationally connected with the cross rod is hinged to the side wall of the gear away from the first sliding block and located on the side of the rotating shaft away from the first sliding block, and the end of the gear away from the first sliding block is located in the positioning groove.

4. The cross-hinged metal roof beam of claim 1, wherein: The piston rod of the hydraulic cylinder is coaxially arranged with the connecting rod.

5. The cross-hinged metal roof beam of claim 4, wherein: The two ends of the top beam body are fixedly connected with clamping blocks (11), the other two ends of the top beam body are provided with clamping grooves (10), through holes (13) are formed in the left and right inner side walls of the clamping grooves, communication holes (7) matched with the through holes are formed in the clamping blocks, the other two ends of the top beam body are provided with connecting holes (9) located on the upper and lower sides of the through holes, and the two ends of the top beam body are fixedly connected with plug rods (12) matched with the connecting holes.

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