A building doorway support frame

Abstract

The utility model relates to support frame technical field, especially a building door hole support frame, including support base plate, the centre place of support base plate top is fixedly connected with the guide sleeve, the centre place of one side of guide sleeve inner wall is fixedly connected with the ratchet bar, the inner wall slidingly connected of guide sleeve has the lifting sleeve. The utility model's advantage lies in: through pulling the handle, can directly lift the lifting sleeve, thereby quickly lifting the support assembly, improve the regulation speed of support height, and after adjusting, the clamping toothed plate is clamped tightly ratchet bar and realizes position fixation under the push of thrust spring, then rotates the handle drive driving bevel gear drive driven bevel gear rotation again, drive screw cylinder rotation, further adjust height through screw drive drive threaded rod, realize the fine adjustment of height, thereby when the wide range regulation can directly slide the lifting sleeve and carry out the quick regulation, can also further fine adjustment in small range, improve practicality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of support frame technology, and in particular to a support frame for building doorways. Background Technology

[0002] Currently, the existing technology for supporting the lintel of a doorway mostly uses multiple triangular angle irons to support the newly built lintel. After the newly built lintel has solidified and fixed, the triangular angle irons are removed by the workers. Because the supporting force of the triangular angle irons is relatively small, the stability of the lintel is poor.

[0003] Currently, some support frames use worm gear and thread transmission for lifting and adjustment, which results in a relatively slow adjustment speed. If long-distance adjustment is required, relying solely on worm gear and thread transmission would require a long period of rotation for adjustment. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a building doorway support frame to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a building doorway support frame, including a support base plate. A guide sleeve is fixedly connected to the center of the top surface of the support base plate. A ratchet rack is fixedly connected to the center of one side of the inner wall of the guide sleeve. A lifting sleeve is slidably connected to the inner wall of the guide sleeve. A guide strip-shaped through hole is opened in the center of the side of the guide sleeve away from the ratchet rack. A guide hole is opened on one side of the bottom of the lifting sleeve. A snap-fit ​​toothed plate is slidably connected to the inner wall of the guide hole. The snap-fit ​​toothed plate is snapped and fixed to the ratchet rack. A handle is fixedly connected to the center of the side of the snap-fit ​​toothed plate away from the ratchet rack. The handle extends through one side of the outer wall of the lifting sleeve. A center is provided between the snap-fit ​​toothed plate and the inner wall of the guide hole. A thrust spring is provided, and the locking toothed plate locks the ratchet rack under the push of the thrust spring. A threaded cylinder is rotatably connected to the center of the inner wall of the lifting sleeve. A driven bevel gear is fixedly connected to the bottom of the outer wall of the threaded cylinder. A linkage shaft is rotatably connected to the center of the bottom side of one side of the lifting sleeve. A driving bevel gear is fixedly connected to one end of the linkage shaft on the inner wall of the guide hole. A crank is fixedly connected to the other end of the linkage shaft on the outer wall of the guide hole. The driving bevel gear and the driven bevel gear are meshed. A secondary lifting sleeve is slidably connected to the top of the inner wall of the lifting sleeve. A threaded rod is fixedly connected to the center of the inner wall of the secondary lifting sleeve. The threaded rod is threadedly connected to the threaded cylinder. A support assembly is fixedly connected to the top of the secondary lifting sleeve.

[0007] Preferably, in any of the above solutions, both the linkage shaft and the handle face the guide strip through hole, and both the linkage shaft and the handle pass through the guide strip through hole to the outside of the guide sleeve.

[0008] The technical effect achieved by adopting the above solution is that it facilitates two-stage adjustment operations on the outside of the same side of the guide sleeve.

[0009] Preferably, in any of the above embodiments, the length of the lifting sleeve is adapted to the depth of the inner wall of the guide sleeve, the length of the guide strip through hole is adapted to the depth of the inner wall of the guide sleeve, and the length of the secondary lifting sleeve is adapted to the length of the threaded rod, etc.

[0010] The technical effect achieved by adopting the above solution is that it can maximize the adjustable length of the lifting sleeve, guide sleeve, and secondary lifting sleeve.

[0011] Preferably, in any of the above embodiments, the support assembly includes a support plate, a guide groove is provided in the middle of the top surface of the support plate, a bidirectional transmission screw is rotatably connected to the center of the inner wall of the guide groove, and clamping plates are slidably connected to both sides of the inner wall of the guide groove. The two clamping plates are respectively threaded to both sides of the bidirectional transmission screw, and the two clamping plates are symmetrically arranged with the dividing point of the positive and negative threads of the bidirectional transmission screw as the center.

[0012] The technical effect achieved by adopting the above solution is that by rotating the bidirectional transmission screw, two clamping plates can be driven to clamp the two sides of the door opening.

[0013] Preferably, in any of the above embodiments, the bottom surfaces of the two clamping plates are in contact with the top surface of the support plate, the lengths of the two clamping plates are adapted to the length of the support plate, both ends of the bidirectional transmission screw extend through the outer wall of the support plate, and both ends of the bidirectional transmission screw are fixedly connected to a rotating head.

[0014] The technical effect achieved by adopting the above solution is that the bidirectional transmission screw can be easily rotated externally by the rotating head for adjustment.

[0015] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: The building's doorway support frame allows for rapid lifting of the lifting sleeve by pulling a handle, thus increasing the speed of height adjustment. After adjustment, the locking toothed plate, pushed by a thrust spring, locks the ratchet rack in place. Then, turning the crank drives the driven bevel gear, which in turn rotates the threaded cylinder. Through threaded transmission, the threaded rod is further adjusted to achieve fine-tuning. This allows for rapid adjustment over a wide range by sliding the lifting sleeve, while also enabling fine-tuning within a small range, improving practicality and efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1-Support base plate, 2-Guide sleeve, 3-Guide strip through hole, 4-Lifting sleeve, 5-Secondary lifting sleeve, 6-Support plate, 7-Guide groove, 8-Two-way transmission screw, 9-Clamping plate, 10-Handle, 11-Linkage shaft, 12-Crank handle, 13-Guide hole, 14-Ratchet, 15-Thrust spring, 16-Snap-fit ​​toothed plate, 17-Driven bevel gear, 18-Drive bevel gear, 19-Threaded cylinder, 20-Threaded rod. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0019] Example 1: As Figures 1 to 3 As shown, a building doorway support frame includes a support base plate 1. A guide sleeve 2 is fixedly connected to the center of the top surface of the support base plate 1. A ratchet rack 14 is fixedly connected to the center of one side of the inner wall of the guide sleeve 2. A lifting sleeve 4 is slidably connected to the inner wall of the guide sleeve 2. A guide strip-shaped through hole 3 is opened in the center of the side of the guide sleeve 2 away from the ratchet rack 14. A guide hole 13 is opened on one side of the bottom of the lifting sleeve 4. A locking tooth plate 16 is slidably connected to the inner wall of the guide hole 13. The locking tooth plate 16 is locked and fixed to the ratchet rack 14. A handle 10 is fixedly connected to the center of the side of the locking tooth plate 16 away from the ratchet rack 14. The handle 10 extends through one side of the outer wall of the lifting sleeve 4. A thrust spring 15 is provided at the center of the locking tooth plate 16 and the inner wall of the guide hole 13. The plate 16 is clamped to the ratchet rack 14 under the push of the thrust spring 15. A threaded cylinder 19 is rotatably connected to the center of the inner wall of the lifting sleeve 4. A driven bevel gear 17 is fixedly connected to the bottom of the outer wall of the threaded cylinder 19. A linkage shaft 11 is rotatably connected to the center of the bottom of one side of the lifting sleeve 4. A drive bevel gear 18 is fixedly connected to one end of the linkage shaft 11 in the inner wall of the guide hole 13. A crank 12 is fixedly connected to one end of the linkage shaft 11 in the outer wall of the guide hole 13. The drive bevel gear 18 and the driven bevel gear 17 are meshed. A secondary lifting sleeve 5 is slidably connected to the top of the inner wall of the lifting sleeve 4. A threaded rod 20 is fixedly connected to the center of the inner wall of the secondary lifting sleeve 5. The threaded rod 20 is threadedly connected to the threaded cylinder 19. A support assembly is fixedly connected to the top of the secondary lifting sleeve 5.

[0020] As an optional technical solution of this utility model, both the linkage shaft 11 and the handle 10 face the guide strip through hole 3. Both the linkage shaft 11 and the handle 10 pass through the guide strip through hole 3 and exit the outside of the guide sleeve 2, thereby facilitating two-stage adjustment operations on the same side of the guide sleeve 2.

[0021] As an optional technical solution of this utility model, the length of the lifting sleeve 4 is adapted to the depth of the inner wall of the guide sleeve 2, the length of the guide strip through hole 3 is adapted to the depth of the inner wall of the guide sleeve 2, and the length of the secondary lifting sleeve 5 is adapted to the length of the threaded rod 20, so as to maximize the adjustable length of the lifting sleeve 4, the guide sleeve 2 and the secondary lifting sleeve 5.

[0022] As an optional technical solution of this utility model, the support component includes a support plate 6, a guide groove 7 is provided in the middle of the top surface of the support plate 6, a bidirectional transmission screw 8 is rotatably connected to the center of the inner wall of the guide groove 7, and clamping plates 9 are slidably connected to both sides of the inner wall of the guide groove 7. The two clamping plates 9 are respectively threaded to both sides of the bidirectional transmission screw 8. The two clamping plates 9 are symmetrically arranged with the dividing point of the positive and negative threads of the bidirectional transmission screw 8 as the center. By rotating the bidirectional transmission screw 8, the two clamping plates 9 can be driven to clamp the two sides of the door opening left and right.

[0023] As an optional technical solution of this utility model, the bottom surfaces of the two clamping plates 9 are attached to the top surface of the support plate 6, the length of the two clamping plates 9 is adapted to the length of the support plate 6, both ends of the bidirectional transmission screw 8 extend through the outer wall of the support plate 6, and both ends of the bidirectional transmission screw 8 are fixedly connected to a rotating head, which facilitates external rotation of the bidirectional transmission screw 8 for adjustment.

[0024] A building doorway support frame, the working principle of which is as follows: 1) By pulling the handle 10, the lifting sleeve 4 can be lifted directly, thereby quickly lifting the support component and improving the adjustment speed of the support height. After adjustment, the locking tooth plate 16 is locked with the ratchet rack 14 under the push of the thrust spring 15 to achieve position fixation. 2) By turning the crank handle 12, the drive bevel gear 18 drives the driven bevel gear 17 to rotate, which in turn drives the threaded cylinder 19 to rotate. The threaded rod 20 is driven by the threaded transmission to further adjust the height and achieve fine adjustment of the height. 3) By rotating the bidirectional transmission screw 8, the two clamping plates 9 can be driven to clamp the two sides of the door opening.

[0025] In summary, this building doorway support frame allows for rapid lifting of the support assembly by pulling the handle 10, which directly raises the lifting sleeve 4. This improves the speed of height adjustment. After adjustment, the locking toothed plate 16, pushed by the thrust spring 15, locks the ratchet rack 14 to fix its position. Then, by turning the rocker handle 12, the drive bevel gear 18 rotates, which in turn drives the driven bevel gear 17 to rotate, which in turn drives the threaded cylinder 19 to rotate. The threaded transmission drives the threaded rod 20 to further adjust the height, achieving fine-tuning. This allows for rapid adjustment by sliding the lifting sleeve 4 during large-range adjustments, while also enabling fine adjustments within a small range, improving practicality and efficiency.

[0026] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support frame for building doorways, characterized in that: The system includes a supporting base plate (1), a guide sleeve (2) fixedly connected to the center of the top surface of the supporting base plate (1), a ratchet rack (14) fixedly connected to the center of one side of the inner wall of the guide sleeve (2), a lifting sleeve (4) slidably connected to the inner wall of the guide sleeve (2), a guide strip-shaped through hole (3) opened in the middle of the side of the guide sleeve (2) away from the ratchet rack (14), and a guide hole (13) opened on one side of the bottom of the lifting sleeve (4). A snap-fit ​​toothed plate (16) is slidably connected to the inner wall of the guide hole (13). The snap-fit ​​toothed plate (16) is snapped and fixed to the ratchet rack (14). A handle (10) is fixedly connected to the center of the side of the snap-fit ​​toothed plate (16) away from the ratchet rack (14). The handle (10) extends through one side of the outer wall of the lifting sleeve (4). A thrust spring (15) is provided at the center of the snap-fit ​​toothed plate (16) and the inner wall of the guide hole (13). The snap-fit ​​toothed plate (16) is in The ratchet rack (14) is clamped under the push of the thrust spring (15). A threaded cylinder (19) is rotatably connected to the center of the inner wall of the lifting sleeve (4). A driven bevel gear (17) is fixedly connected to the bottom of the outer wall of the threaded cylinder (19). A linkage shaft (11) is rotatably connected to the center of the bottom of one side of the lifting sleeve (4). A drive bevel gear (18) is fixedly connected to one end of the linkage shaft (11) on the inner wall of the guide hole (13). A crank handle (12) is fixedly connected to one end of the linkage shaft (11) on the outer wall of the guide hole (13). The drive bevel gear (18) meshes with the driven bevel gear (17). A secondary lifting sleeve (5) is slidably connected to the top of the inner wall of the lifting sleeve (4). A threaded rod (20) is fixedly connected to the center of the inner wall of the secondary lifting sleeve (5). The threaded rod (20) is threadedly connected to the threaded cylinder (19). A support assembly is fixedly connected to the top of the secondary lifting sleeve (5).

2. The building doorway support frame according to claim 1, characterized in that: Both the linkage shaft (11) and the handle (10) face the guide strip through hole (3), and both the linkage shaft (11) and the handle (10) pass through the guide strip through hole (3) to the outside of the guide sleeve (2).

3. A building doorway support frame according to claim 2, characterized in that: The length of the lifting sleeve (4) is adapted to the depth of the inner wall of the guide sleeve (2), the length of the guide strip through hole (3) is adapted to the depth of the inner wall of the guide sleeve (2), and the length of the secondary lifting sleeve (5) is the same as the length of the threaded rod (20).

4. A building doorway support frame according to claim 3, characterized in that: The support assembly includes a support plate (6), a guide groove (7) is provided in the middle of the top surface of the support plate (6), a bidirectional transmission screw (8) is rotatably connected to the center of the inner wall of the guide groove (7), and clamping plates (9) are slidably connected to both sides of the inner wall of the guide groove (7). The two clamping plates (9) are respectively threaded to both sides of the bidirectional transmission screw (8), and the two clamping plates (9) are symmetrically arranged with the dividing point of the positive and negative threads of the bidirectional transmission screw (8) as the center.

5. A building doorway support frame according to claim 4, characterized in that: The bottom surfaces of the two clamping plates (9) are in contact with the top surface of the support plate (6), the lengths of the two clamping plates (9) are matched with the length of the support plate (6), both ends of the bidirectional transmission screw (8) extend through the outer wall of the support plate (6), and both ends of the bidirectional transmission screw (8) are fixedly connected with rotating heads.

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